python_code
stringlengths 0
1.8M
| repo_name
stringclasses 7
values | file_path
stringlengths 5
99
|
|---|---|---|
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: nsxfobj - Public interfaces to the ACPI subsystem
* ACPI Object oriented interfaces
*
******************************************************************************/
#define EXPORT_ACPI_INTERFACES
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsxfobj")
/*******************************************************************************
*
* FUNCTION: acpi_get_type
*
* PARAMETERS: handle - Handle of object whose type is desired
* ret_type - Where the type will be placed
*
* RETURN: Status
*
* DESCRIPTION: This routine returns the type associated with a particular
* handle
*
******************************************************************************/
acpi_status acpi_get_type(acpi_handle handle, acpi_object_type *ret_type)
{
struct acpi_namespace_node *node;
acpi_status status;
/* Parameter Validation */
if (!ret_type) {
return (AE_BAD_PARAMETER);
}
/* Special case for the predefined Root Node (return type ANY) */
if (handle == ACPI_ROOT_OBJECT) {
*ret_type = ACPI_TYPE_ANY;
return (AE_OK);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Convert and validate the handle */
node = acpi_ns_validate_handle(handle);
if (!node) {
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (AE_BAD_PARAMETER);
}
*ret_type = node->type;
status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_get_type)
/*******************************************************************************
*
* FUNCTION: acpi_get_parent
*
* PARAMETERS: handle - Handle of object whose parent is desired
* ret_handle - Where the parent handle will be placed
*
* RETURN: Status
*
* DESCRIPTION: Returns a handle to the parent of the object represented by
* Handle.
*
******************************************************************************/
acpi_status acpi_get_parent(acpi_handle handle, acpi_handle *ret_handle)
{
struct acpi_namespace_node *node;
struct acpi_namespace_node *parent_node;
acpi_status status;
if (!ret_handle) {
return (AE_BAD_PARAMETER);
}
/* Special case for the predefined Root Node (no parent) */
if (handle == ACPI_ROOT_OBJECT) {
return (AE_NULL_ENTRY);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Convert and validate the handle */
node = acpi_ns_validate_handle(handle);
if (!node) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
/* Get the parent entry */
parent_node = node->parent;
*ret_handle = ACPI_CAST_PTR(acpi_handle, parent_node);
/* Return exception if parent is null */
if (!parent_node) {
status = AE_NULL_ENTRY;
}
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_get_parent)
/*******************************************************************************
*
* FUNCTION: acpi_get_next_object
*
* PARAMETERS: type - Type of object to be searched for
* parent - Parent object whose children we are getting
* last_child - Previous child that was found.
* The NEXT child will be returned
* ret_handle - Where handle to the next object is placed
*
* RETURN: Status
*
* DESCRIPTION: Return the next peer object within the namespace. If Handle is
* valid, Scope is ignored. Otherwise, the first object within
* Scope is returned.
*
******************************************************************************/
acpi_status
acpi_get_next_object(acpi_object_type type,
acpi_handle parent,
acpi_handle child, acpi_handle *ret_handle)
{
acpi_status status;
struct acpi_namespace_node *node;
struct acpi_namespace_node *parent_node = NULL;
struct acpi_namespace_node *child_node = NULL;
/* Parameter validation */
if (type > ACPI_TYPE_EXTERNAL_MAX) {
return (AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return (status);
}
/* If null handle, use the parent */
if (!child) {
/* Start search at the beginning of the specified scope */
parent_node = acpi_ns_validate_handle(parent);
if (!parent_node) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
} else {
/* Non-null handle, ignore the parent */
/* Convert and validate the handle */
child_node = acpi_ns_validate_handle(child);
if (!child_node) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
}
/* Internal function does the real work */
node = acpi_ns_get_next_node_typed(type, parent_node, child_node);
if (!node) {
status = AE_NOT_FOUND;
goto unlock_and_exit;
}
if (ret_handle) {
*ret_handle = ACPI_CAST_PTR(acpi_handle, node);
}
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_get_next_object)
| linux-master | drivers/acpi/acpica/nsxfobj.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: dsargs - Support for execution of dynamic arguments for static
* objects (regions, fields, buffer fields, etc.)
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "amlcode.h"
#include "acdispat.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dsargs")
/* Local prototypes */
static acpi_status
acpi_ds_execute_arguments(struct acpi_namespace_node *node,
struct acpi_namespace_node *scope_node,
u32 aml_length, u8 *aml_start);
/*******************************************************************************
*
* FUNCTION: acpi_ds_execute_arguments
*
* PARAMETERS: node - Object NS node
* scope_node - Parent NS node
* aml_length - Length of executable AML
* aml_start - Pointer to the AML
*
* RETURN: Status.
*
* DESCRIPTION: Late (deferred) execution of region or field arguments
*
******************************************************************************/
static acpi_status
acpi_ds_execute_arguments(struct acpi_namespace_node *node,
struct acpi_namespace_node *scope_node,
u32 aml_length, u8 *aml_start)
{
acpi_status status;
union acpi_parse_object *op;
struct acpi_walk_state *walk_state;
ACPI_FUNCTION_TRACE_PTR(ds_execute_arguments, aml_start);
/* Allocate a new parser op to be the root of the parsed tree */
op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP, aml_start);
if (!op) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Save the Node for use in acpi_ps_parse_aml */
op->common.node = scope_node;
/* Create and initialize a new parser state */
walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL);
if (!walk_state) {
status = AE_NO_MEMORY;
goto cleanup;
}
status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start,
aml_length, NULL, ACPI_IMODE_LOAD_PASS1);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
goto cleanup;
}
/* Mark this parse as a deferred opcode */
walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP;
walk_state->deferred_node = node;
/* Pass1: Parse the entire declaration */
status = acpi_ps_parse_aml(walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
/* Get and init the Op created above */
op->common.node = node;
acpi_ps_delete_parse_tree(op);
/* Evaluate the deferred arguments */
op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP, aml_start);
if (!op) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
op->common.node = scope_node;
/* Create and initialize a new parser state */
walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL);
if (!walk_state) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Execute the opcode and arguments */
status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start,
aml_length, NULL, ACPI_IMODE_EXECUTE);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
goto cleanup;
}
/* Mark this execution as a deferred opcode */
walk_state->deferred_node = node;
status = acpi_ps_parse_aml(walk_state);
cleanup:
acpi_ps_delete_parse_tree(op);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_get_buffer_field_arguments
*
* PARAMETERS: obj_desc - A valid buffer_field object
*
* RETURN: Status.
*
* DESCRIPTION: Get buffer_field Buffer and Index. This implements the late
* evaluation of these field attributes.
*
******************************************************************************/
acpi_status
acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc)
{
union acpi_operand_object *extra_desc;
struct acpi_namespace_node *node;
acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_field_arguments, obj_desc);
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
return_ACPI_STATUS(AE_OK);
}
/* Get the AML pointer (method object) and buffer_field node */
extra_desc = acpi_ns_get_secondary_object(obj_desc);
node = obj_desc->buffer_field.node;
ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
(ACPI_TYPE_BUFFER_FIELD, node, NULL));
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n",
acpi_ut_get_node_name(node)));
/* Execute the AML code for the term_arg arguments */
status = acpi_ds_execute_arguments(node, node->parent,
extra_desc->extra.aml_length,
extra_desc->extra.aml_start);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_get_bank_field_arguments
*
* PARAMETERS: obj_desc - A valid bank_field object
*
* RETURN: Status.
*
* DESCRIPTION: Get bank_field bank_value. This implements the late
* evaluation of these field attributes.
*
******************************************************************************/
acpi_status
acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc)
{
union acpi_operand_object *extra_desc;
struct acpi_namespace_node *node;
acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ds_get_bank_field_arguments, obj_desc);
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
return_ACPI_STATUS(AE_OK);
}
/* Get the AML pointer (method object) and bank_field node */
extra_desc = acpi_ns_get_secondary_object(obj_desc);
node = obj_desc->bank_field.node;
ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
(ACPI_TYPE_LOCAL_BANK_FIELD, node, NULL));
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n",
acpi_ut_get_node_name(node)));
/* Execute the AML code for the term_arg arguments */
status = acpi_ds_execute_arguments(node, node->parent,
extra_desc->extra.aml_length,
extra_desc->extra.aml_start);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_ut_add_address_range(obj_desc->region.space_id,
obj_desc->region.address,
obj_desc->region.length, node);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_get_buffer_arguments
*
* PARAMETERS: obj_desc - A valid Buffer object
*
* RETURN: Status.
*
* DESCRIPTION: Get Buffer length and initializer byte list. This implements
* the late evaluation of these attributes.
*
******************************************************************************/
acpi_status acpi_ds_get_buffer_arguments(union acpi_operand_object *obj_desc)
{
struct acpi_namespace_node *node;
acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_arguments, obj_desc);
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
return_ACPI_STATUS(AE_OK);
}
/* Get the Buffer node */
node = obj_desc->buffer.node;
if (!node) {
ACPI_ERROR((AE_INFO,
"No pointer back to namespace node in buffer object %p",
obj_desc));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Buffer Arg Init\n"));
/* Execute the AML code for the term_arg arguments */
status = acpi_ds_execute_arguments(node, node,
obj_desc->buffer.aml_length,
obj_desc->buffer.aml_start);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_get_package_arguments
*
* PARAMETERS: obj_desc - A valid Package object
*
* RETURN: Status.
*
* DESCRIPTION: Get Package length and initializer byte list. This implements
* the late evaluation of these attributes.
*
******************************************************************************/
acpi_status acpi_ds_get_package_arguments(union acpi_operand_object *obj_desc)
{
struct acpi_namespace_node *node;
acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ds_get_package_arguments, obj_desc);
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
return_ACPI_STATUS(AE_OK);
}
/* Get the Package node */
node = obj_desc->package.node;
if (!node) {
ACPI_ERROR((AE_INFO,
"No pointer back to namespace node in package %p",
obj_desc));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Package Argument Init, AML Ptr: %p\n",
obj_desc->package.aml_start));
/* Execute the AML code for the term_arg arguments */
status = acpi_ds_execute_arguments(node, node,
obj_desc->package.aml_length,
obj_desc->package.aml_start);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_get_region_arguments
*
* PARAMETERS: obj_desc - A valid region object
*
* RETURN: Status.
*
* DESCRIPTION: Get region address and length. This implements the late
* evaluation of these region attributes.
*
******************************************************************************/
acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc)
{
struct acpi_namespace_node *node;
acpi_status status;
union acpi_operand_object *extra_desc;
ACPI_FUNCTION_TRACE_PTR(ds_get_region_arguments, obj_desc);
if (obj_desc->region.flags & AOPOBJ_DATA_VALID) {
return_ACPI_STATUS(AE_OK);
}
extra_desc = acpi_ns_get_secondary_object(obj_desc);
if (!extra_desc) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
/* Get the Region node */
node = obj_desc->region.node;
ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
(ACPI_TYPE_REGION, node, NULL));
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[%4.4s] OpRegion Arg Init at AML %p\n",
acpi_ut_get_node_name(node),
extra_desc->extra.aml_start));
/* Execute the argument AML */
status = acpi_ds_execute_arguments(node, extra_desc->extra.scope_node,
extra_desc->extra.aml_length,
extra_desc->extra.aml_start);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_ut_add_address_range(obj_desc->region.space_id,
obj_desc->region.address,
obj_desc->region.length, node);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/dsargs.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: dsdebug - Parser/Interpreter interface - debugging
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdispat.h"
#include "acnamesp.h"
#ifdef ACPI_DISASSEMBLER
#include "acdisasm.h"
#endif
#include "acinterp.h"
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dsdebug")
#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
/* Local prototypes */
static void
acpi_ds_print_node_pathname(struct acpi_namespace_node *node,
const char *message);
/*******************************************************************************
*
* FUNCTION: acpi_ds_print_node_pathname
*
* PARAMETERS: node - Object
* message - Prefix message
*
* DESCRIPTION: Print an object's full namespace pathname
* Manages allocation/freeing of a pathname buffer
*
******************************************************************************/
static void
acpi_ds_print_node_pathname(struct acpi_namespace_node *node,
const char *message)
{
struct acpi_buffer buffer;
acpi_status status;
ACPI_FUNCTION_TRACE(ds_print_node_pathname);
if (!node) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "[NULL NAME]"));
return_VOID;
}
/* Convert handle to full pathname and print it (with supplied message) */
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_ns_handle_to_pathname(node, &buffer, TRUE);
if (ACPI_SUCCESS(status)) {
if (message) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "%s ",
message));
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "[%s] (Node %p)",
(char *)buffer.pointer, node));
ACPI_FREE(buffer.pointer);
}
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_dump_method_stack
*
* PARAMETERS: status - Method execution status
* walk_state - Current state of the parse tree walk
* op - Executing parse op
*
* RETURN: None
*
* DESCRIPTION: Called when a method has been aborted because of an error.
* Dumps the method execution stack.
*
******************************************************************************/
void
acpi_ds_dump_method_stack(acpi_status status,
struct acpi_walk_state *walk_state,
union acpi_parse_object *op)
{
union acpi_parse_object *next;
struct acpi_thread_state *thread;
struct acpi_walk_state *next_walk_state;
struct acpi_namespace_node *previous_method = NULL;
union acpi_operand_object *method_desc;
ACPI_FUNCTION_TRACE(ds_dump_method_stack);
/* Ignore control codes, they are not errors */
if (ACPI_CNTL_EXCEPTION(status)) {
return_VOID;
}
/* We may be executing a deferred opcode */
if (walk_state->deferred_node) {
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Executing subtree for Buffer/Package/Region\n"));
return_VOID;
}
/*
* If there is no Thread, we are not actually executing a method.
* This can happen when the iASL compiler calls the interpreter
* to perform constant folding.
*/
thread = walk_state->thread;
if (!thread) {
return_VOID;
}
/* Display exception and method name */
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"\n**** Exception %s during execution of method ",
acpi_format_exception(status)));
acpi_ds_print_node_pathname(walk_state->method_node, NULL);
/* Display stack of executing methods */
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH,
"\n\nMethod Execution Stack:\n"));
next_walk_state = thread->walk_state_list;
/* Walk list of linked walk states */
while (next_walk_state) {
method_desc = next_walk_state->method_desc;
if (method_desc) {
acpi_ex_stop_trace_method((struct acpi_namespace_node *)
method_desc->method.node,
method_desc, walk_state);
}
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
" Method [%4.4s] executing: ",
acpi_ut_get_node_name(next_walk_state->
method_node)));
/* First method is the currently executing method */
if (next_walk_state == walk_state) {
if (op) {
/* Display currently executing ASL statement */
next = op->common.next;
op->common.next = NULL;
#ifdef ACPI_DISASSEMBLER
if (walk_state->method_node !=
acpi_gbl_root_node) {
/* More verbose if not module-level code */
acpi_os_printf("Failed at ");
acpi_dm_disassemble(next_walk_state, op,
ACPI_UINT32_MAX);
}
#endif
op->common.next = next;
}
} else {
/*
* This method has called another method
* NOTE: the method call parse subtree is already deleted at
* this point, so we cannot disassemble the method invocation.
*/
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH,
"Call to method "));
acpi_ds_print_node_pathname(previous_method, NULL);
}
previous_method = next_walk_state->method_node;
next_walk_state = next_walk_state->next;
ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "\n"));
}
return_VOID;
}
#else
void
acpi_ds_dump_method_stack(acpi_status status,
struct acpi_walk_state *walk_state,
union acpi_parse_object *op)
{
return;
}
#endif
| linux-master | drivers/acpi/acpica/dsdebug.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: exsystem - Interface to OS services
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("exsystem")
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_wait_semaphore
*
* PARAMETERS: semaphore - Semaphore to wait on
* timeout - Max time to wait
*
* RETURN: Status
*
* DESCRIPTION: Implements a semaphore wait with a check to see if the
* semaphore is available immediately. If it is not, the
* interpreter is released before waiting.
*
******************************************************************************/
acpi_status acpi_ex_system_wait_semaphore(acpi_semaphore semaphore, u16 timeout)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ex_system_wait_semaphore);
status = acpi_os_wait_semaphore(semaphore, 1, ACPI_DO_NOT_WAIT);
if (ACPI_SUCCESS(status)) {
return_ACPI_STATUS(status);
}
if (status == AE_TIME) {
/* We must wait, so unlock the interpreter */
acpi_ex_exit_interpreter();
status = acpi_os_wait_semaphore(semaphore, 1, timeout);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"*** Thread awake after blocking, %s\n",
acpi_format_exception(status)));
/* Reacquire the interpreter */
acpi_ex_enter_interpreter();
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_wait_mutex
*
* PARAMETERS: mutex - Mutex to wait on
* timeout - Max time to wait
*
* RETURN: Status
*
* DESCRIPTION: Implements a mutex wait with a check to see if the
* mutex is available immediately. If it is not, the
* interpreter is released before waiting.
*
******************************************************************************/
acpi_status acpi_ex_system_wait_mutex(acpi_mutex mutex, u16 timeout)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ex_system_wait_mutex);
status = acpi_os_acquire_mutex(mutex, ACPI_DO_NOT_WAIT);
if (ACPI_SUCCESS(status)) {
return_ACPI_STATUS(status);
}
if (status == AE_TIME) {
/* We must wait, so unlock the interpreter */
acpi_ex_exit_interpreter();
status = acpi_os_acquire_mutex(mutex, timeout);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"*** Thread awake after blocking, %s\n",
acpi_format_exception(status)));
/* Reacquire the interpreter */
acpi_ex_enter_interpreter();
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_do_stall
*
* PARAMETERS: how_long_us - The amount of time to stall,
* in microseconds
*
* RETURN: Status
*
* DESCRIPTION: Suspend running thread for specified amount of time.
* Note: ACPI specification requires that Stall() does not
* relinquish the processor, and delays longer than 100 usec
* should use Sleep() instead. We allow stalls up to 255 usec
* for compatibility with other interpreters and existing BIOSs.
*
******************************************************************************/
acpi_status acpi_ex_system_do_stall(u32 how_long_us)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_ENTRY();
if (how_long_us > 255) {
/*
* Longer than 255 microseconds, this is an error
*
* (ACPI specifies 100 usec as max, but this gives some slack in
* order to support existing BIOSs)
*/
ACPI_ERROR((AE_INFO,
"Time parameter is too large (%u)", how_long_us));
status = AE_AML_OPERAND_VALUE;
} else {
if (how_long_us > 100) {
ACPI_WARNING((AE_INFO,
"Time parameter %u us > 100 us violating ACPI spec, please fix the firmware.",
how_long_us));
}
acpi_os_stall(how_long_us);
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_do_sleep
*
* PARAMETERS: how_long_ms - The amount of time to sleep,
* in milliseconds
*
* RETURN: None
*
* DESCRIPTION: Sleep the running thread for specified amount of time.
*
******************************************************************************/
acpi_status acpi_ex_system_do_sleep(u64 how_long_ms)
{
ACPI_FUNCTION_ENTRY();
/* Since this thread will sleep, we must release the interpreter */
acpi_ex_exit_interpreter();
/*
* For compatibility with other ACPI implementations and to prevent
* accidental deep sleeps, limit the sleep time to something reasonable.
*/
if (how_long_ms > ACPI_MAX_SLEEP) {
how_long_ms = ACPI_MAX_SLEEP;
}
acpi_os_sleep(how_long_ms);
/* And now we must get the interpreter again */
acpi_ex_enter_interpreter();
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_signal_event
*
* PARAMETERS: obj_desc - The object descriptor for this op
*
* RETURN: Status
*
* DESCRIPTION: Provides an access point to perform synchronization operations
* within the AML.
*
******************************************************************************/
acpi_status acpi_ex_system_signal_event(union acpi_operand_object * obj_desc)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(ex_system_signal_event);
if (obj_desc) {
status =
acpi_os_signal_semaphore(obj_desc->event.os_semaphore, 1);
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_wait_event
*
* PARAMETERS: time_desc - The 'time to delay' object descriptor
* obj_desc - The object descriptor for this op
*
* RETURN: Status
*
* DESCRIPTION: Provides an access point to perform synchronization operations
* within the AML. This operation is a request to wait for an
* event.
*
******************************************************************************/
acpi_status
acpi_ex_system_wait_event(union acpi_operand_object *time_desc,
union acpi_operand_object *obj_desc)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(ex_system_wait_event);
if (obj_desc) {
status =
acpi_ex_system_wait_semaphore(obj_desc->event.os_semaphore,
(u16) time_desc->integer.
value);
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_reset_event
*
* PARAMETERS: obj_desc - The object descriptor for this op
*
* RETURN: Status
*
* DESCRIPTION: Reset an event to a known state.
*
******************************************************************************/
acpi_status acpi_ex_system_reset_event(union acpi_operand_object *obj_desc)
{
acpi_status status = AE_OK;
acpi_semaphore temp_semaphore;
ACPI_FUNCTION_ENTRY();
/*
* We are going to simply delete the existing semaphore and
* create a new one!
*/
status =
acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0, &temp_semaphore);
if (ACPI_SUCCESS(status)) {
(void)acpi_os_delete_semaphore(obj_desc->event.os_semaphore);
obj_desc->event.os_semaphore = temp_semaphore;
}
return (status);
}
| linux-master | drivers/acpi/acpica/exsystem.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: evglock - Global Lock support
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acevents.h"
#include "acinterp.h"
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evglock")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/* Local prototypes */
static u32 acpi_ev_global_lock_handler(void *context);
/*******************************************************************************
*
* FUNCTION: acpi_ev_init_global_lock_handler
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Install a handler for the global lock release event
*
******************************************************************************/
acpi_status acpi_ev_init_global_lock_handler(void)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ev_init_global_lock_handler);
/* If Hardware Reduced flag is set, there is no global lock */
if (acpi_gbl_reduced_hardware) {
return_ACPI_STATUS(AE_OK);
}
/* Attempt installation of the global lock handler */
status = acpi_install_fixed_event_handler(ACPI_EVENT_GLOBAL,
acpi_ev_global_lock_handler,
NULL);
/*
* If the global lock does not exist on this platform, the attempt to
* enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick).
* Map to AE_OK, but mark global lock as not present. Any attempt to
* actually use the global lock will be flagged with an error.
*/
acpi_gbl_global_lock_present = FALSE;
if (status == AE_NO_HARDWARE_RESPONSE) {
ACPI_ERROR((AE_INFO,
"No response from Global Lock hardware, disabling lock"));
return_ACPI_STATUS(AE_OK);
}
status = acpi_os_create_lock(&acpi_gbl_global_lock_pending_lock);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
acpi_gbl_global_lock_pending = FALSE;
acpi_gbl_global_lock_present = TRUE;
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_remove_global_lock_handler
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Remove the handler for the Global Lock
*
******************************************************************************/
acpi_status acpi_ev_remove_global_lock_handler(void)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ev_remove_global_lock_handler);
acpi_gbl_global_lock_present = FALSE;
status = acpi_remove_fixed_event_handler(ACPI_EVENT_GLOBAL,
acpi_ev_global_lock_handler);
acpi_os_delete_lock(acpi_gbl_global_lock_pending_lock);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_global_lock_handler
*
* PARAMETERS: context - From thread interface, not used
*
* RETURN: ACPI_INTERRUPT_HANDLED
*
* DESCRIPTION: Invoked directly from the SCI handler when a global lock
* release interrupt occurs. If there is actually a pending
* request for the lock, signal the waiting thread.
*
******************************************************************************/
static u32 acpi_ev_global_lock_handler(void *context)
{
acpi_status status;
acpi_cpu_flags flags;
flags = acpi_os_acquire_lock(acpi_gbl_global_lock_pending_lock);
/*
* If a request for the global lock is not actually pending,
* we are done. This handles "spurious" global lock interrupts
* which are possible (and have been seen) with bad BIOSs.
*/
if (!acpi_gbl_global_lock_pending) {
goto cleanup_and_exit;
}
/*
* Send a unit to the global lock semaphore. The actual acquisition
* of the global lock will be performed by the waiting thread.
*/
status = acpi_os_signal_semaphore(acpi_gbl_global_lock_semaphore, 1);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO, "Could not signal Global Lock semaphore"));
}
acpi_gbl_global_lock_pending = FALSE;
cleanup_and_exit:
acpi_os_release_lock(acpi_gbl_global_lock_pending_lock, flags);
return (ACPI_INTERRUPT_HANDLED);
}
/******************************************************************************
*
* FUNCTION: acpi_ev_acquire_global_lock
*
* PARAMETERS: timeout - Max time to wait for the lock, in millisec.
*
* RETURN: Status
*
* DESCRIPTION: Attempt to gain ownership of the Global Lock.
*
* MUTEX: Interpreter must be locked
*
* Note: The original implementation allowed multiple threads to "acquire" the
* Global Lock, and the OS would hold the lock until the last thread had
* released it. However, this could potentially starve the BIOS out of the
* lock, especially in the case where there is a tight handshake between the
* Embedded Controller driver and the BIOS. Therefore, this implementation
* allows only one thread to acquire the HW Global Lock at a time, and makes
* the global lock appear as a standard mutex on the OS side.
*
*****************************************************************************/
acpi_status acpi_ev_acquire_global_lock(u16 timeout)
{
acpi_cpu_flags flags;
acpi_status status;
u8 acquired = FALSE;
ACPI_FUNCTION_TRACE(ev_acquire_global_lock);
/*
* Only one thread can acquire the GL at a time, the global_lock_mutex
* enforces this. This interface releases the interpreter if we must wait.
*/
status =
acpi_ex_system_wait_mutex(acpi_gbl_global_lock_mutex->mutex.
os_mutex, timeout);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Update the global lock handle and check for wraparound. The handle is
* only used for the external global lock interfaces, but it is updated
* here to properly handle the case where a single thread may acquire the
* lock via both the AML and the acpi_acquire_global_lock interfaces. The
* handle is therefore updated on the first acquire from a given thread
* regardless of where the acquisition request originated.
*/
acpi_gbl_global_lock_handle++;
if (acpi_gbl_global_lock_handle == 0) {
acpi_gbl_global_lock_handle = 1;
}
/*
* Make sure that a global lock actually exists. If not, just
* treat the lock as a standard mutex.
*/
if (!acpi_gbl_global_lock_present) {
acpi_gbl_global_lock_acquired = TRUE;
return_ACPI_STATUS(AE_OK);
}
flags = acpi_os_acquire_lock(acpi_gbl_global_lock_pending_lock);
do {
/* Attempt to acquire the actual hardware lock */
ACPI_ACQUIRE_GLOBAL_LOCK(acpi_gbl_FACS, acquired);
if (acquired) {
acpi_gbl_global_lock_acquired = TRUE;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Acquired hardware Global Lock\n"));
break;
}
/*
* Did not get the lock. The pending bit was set above, and
* we must now wait until we receive the global lock
* released interrupt.
*/
acpi_gbl_global_lock_pending = TRUE;
acpi_os_release_lock(acpi_gbl_global_lock_pending_lock, flags);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Waiting for hardware Global Lock\n"));
/*
* Wait for handshake with the global lock interrupt handler.
* This interface releases the interpreter if we must wait.
*/
status =
acpi_ex_system_wait_semaphore
(acpi_gbl_global_lock_semaphore, ACPI_WAIT_FOREVER);
flags = acpi_os_acquire_lock(acpi_gbl_global_lock_pending_lock);
} while (ACPI_SUCCESS(status));
acpi_gbl_global_lock_pending = FALSE;
acpi_os_release_lock(acpi_gbl_global_lock_pending_lock, flags);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_release_global_lock
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Releases ownership of the Global Lock.
*
******************************************************************************/
acpi_status acpi_ev_release_global_lock(void)
{
u8 pending = FALSE;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(ev_release_global_lock);
/* Lock must be already acquired */
if (!acpi_gbl_global_lock_acquired) {
ACPI_WARNING((AE_INFO,
"Cannot release the ACPI Global Lock, it has not been acquired"));
return_ACPI_STATUS(AE_NOT_ACQUIRED);
}
if (acpi_gbl_global_lock_present) {
/* Allow any thread to release the lock */
ACPI_RELEASE_GLOBAL_LOCK(acpi_gbl_FACS, pending);
/*
* If the pending bit was set, we must write GBL_RLS to the control
* register
*/
if (pending) {
status =
acpi_write_bit_register
(ACPI_BITREG_GLOBAL_LOCK_RELEASE,
ACPI_ENABLE_EVENT);
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Released hardware Global Lock\n"));
}
acpi_gbl_global_lock_acquired = FALSE;
/* Release the local GL mutex */
acpi_os_release_mutex(acpi_gbl_global_lock_mutex->mutex.os_mutex);
return_ACPI_STATUS(status);
}
#endif /* !ACPI_REDUCED_HARDWARE */
| linux-master | drivers/acpi/acpica/evglock.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: dbtest - Various debug-related tests
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdebug.h"
#include "acnamesp.h"
#include "acpredef.h"
#include "acinterp.h"
#define _COMPONENT ACPI_CA_DEBUGGER
ACPI_MODULE_NAME("dbtest")
/* Local prototypes */
static void acpi_db_test_all_objects(void);
static acpi_status
acpi_db_test_one_object(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value);
static acpi_status
acpi_db_test_integer_type(struct acpi_namespace_node *node, u32 bit_length);
static acpi_status
acpi_db_test_buffer_type(struct acpi_namespace_node *node, u32 bit_length);
static acpi_status
acpi_db_test_string_type(struct acpi_namespace_node *node, u32 byte_length);
static acpi_status acpi_db_test_package_type(struct acpi_namespace_node *node);
static acpi_status
acpi_db_test_field_unit_type(union acpi_operand_object *obj_desc);
static acpi_status
acpi_db_read_from_object(struct acpi_namespace_node *node,
acpi_object_type expected_type,
union acpi_object **value);
static acpi_status
acpi_db_write_to_object(struct acpi_namespace_node *node,
union acpi_object *value);
static void acpi_db_evaluate_all_predefined_names(char *count_arg);
static acpi_status
acpi_db_evaluate_one_predefined_name(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value);
/*
* Test subcommands
*/
static struct acpi_db_argument_info acpi_db_test_types[] = {
{"OBJECTS"},
{"PREDEFINED"},
{NULL} /* Must be null terminated */
};
#define CMD_TEST_OBJECTS 0
#define CMD_TEST_PREDEFINED 1
#define BUFFER_FILL_VALUE 0xFF
/*
* Support for the special debugger read/write control methods.
* These methods are installed into the current namespace and are
* used to read and write the various namespace objects. The point
* is to force the AML interpreter do all of the work.
*/
#define ACPI_DB_READ_METHOD "\\_T98"
#define ACPI_DB_WRITE_METHOD "\\_T99"
static acpi_handle read_handle = NULL;
static acpi_handle write_handle = NULL;
/* ASL Definitions of the debugger read/write control methods. AML below. */
#if 0
definition_block("ssdt.aml", "SSDT", 2, "Intel", "DEBUG", 0x00000001)
{
method(_T98, 1, not_serialized) { /* Read */
return (de_ref_of(arg0))
}
}
definition_block("ssdt2.aml", "SSDT", 2, "Intel", "DEBUG", 0x00000001)
{
method(_T99, 2, not_serialized) { /* Write */
store(arg1, arg0)
}
}
#endif
static unsigned char read_method_code[] = {
0x53, 0x53, 0x44, 0x54, 0x2E, 0x00, 0x00, 0x00, /* 00000000 "SSDT...." */
0x02, 0xC9, 0x49, 0x6E, 0x74, 0x65, 0x6C, 0x00, /* 00000008 "..Intel." */
0x44, 0x45, 0x42, 0x55, 0x47, 0x00, 0x00, 0x00, /* 00000010 "DEBUG..." */
0x01, 0x00, 0x00, 0x00, 0x49, 0x4E, 0x54, 0x4C, /* 00000018 "....INTL" */
0x18, 0x12, 0x13, 0x20, 0x14, 0x09, 0x5F, 0x54, /* 00000020 "... .._T" */
0x39, 0x38, 0x01, 0xA4, 0x83, 0x68 /* 00000028 "98...h" */
};
static unsigned char write_method_code[] = {
0x53, 0x53, 0x44, 0x54, 0x2E, 0x00, 0x00, 0x00, /* 00000000 "SSDT...." */
0x02, 0x15, 0x49, 0x6E, 0x74, 0x65, 0x6C, 0x00, /* 00000008 "..Intel." */
0x44, 0x45, 0x42, 0x55, 0x47, 0x00, 0x00, 0x00, /* 00000010 "DEBUG..." */
0x01, 0x00, 0x00, 0x00, 0x49, 0x4E, 0x54, 0x4C, /* 00000018 "....INTL" */
0x18, 0x12, 0x13, 0x20, 0x14, 0x09, 0x5F, 0x54, /* 00000020 "... .._T" */
0x39, 0x39, 0x02, 0x70, 0x69, 0x68 /* 00000028 "99.pih" */
};
/*******************************************************************************
*
* FUNCTION: acpi_db_execute_test
*
* PARAMETERS: type_arg - Subcommand
*
* RETURN: None
*
* DESCRIPTION: Execute various debug tests.
*
* Note: Code is prepared for future expansion of the TEST command.
*
******************************************************************************/
void acpi_db_execute_test(char *type_arg)
{
u32 temp;
acpi_ut_strupr(type_arg);
temp = acpi_db_match_argument(type_arg, acpi_db_test_types);
if (temp == ACPI_TYPE_NOT_FOUND) {
acpi_os_printf("Invalid or unsupported argument\n");
return;
}
switch (temp) {
case CMD_TEST_OBJECTS:
acpi_db_test_all_objects();
break;
case CMD_TEST_PREDEFINED:
acpi_db_evaluate_all_predefined_names(NULL);
break;
default:
break;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_test_all_objects
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: This test implements the OBJECTS subcommand. It exercises the
* namespace by reading/writing/comparing all data objects such
* as integers, strings, buffers, fields, buffer fields, etc.
*
******************************************************************************/
static void acpi_db_test_all_objects(void)
{
acpi_status status;
/* Install the debugger read-object control method if necessary */
if (!read_handle) {
status = acpi_install_method(read_method_code);
if (ACPI_FAILURE(status)) {
acpi_os_printf
("%s, Could not install debugger read method\n",
acpi_format_exception(status));
return;
}
status =
acpi_get_handle(NULL, ACPI_DB_READ_METHOD, &read_handle);
if (ACPI_FAILURE(status)) {
acpi_os_printf
("Could not obtain handle for debug method %s\n",
ACPI_DB_READ_METHOD);
return;
}
}
/* Install the debugger write-object control method if necessary */
if (!write_handle) {
status = acpi_install_method(write_method_code);
if (ACPI_FAILURE(status)) {
acpi_os_printf
("%s, Could not install debugger write method\n",
acpi_format_exception(status));
return;
}
status =
acpi_get_handle(NULL, ACPI_DB_WRITE_METHOD, &write_handle);
if (ACPI_FAILURE(status)) {
acpi_os_printf
("Could not obtain handle for debug method %s\n",
ACPI_DB_WRITE_METHOD);
return;
}
}
/* Walk the entire namespace, testing each supported named data object */
(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, acpi_db_test_one_object,
NULL, NULL, NULL);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_test_one_object
*
* PARAMETERS: acpi_walk_callback
*
* RETURN: Status
*
* DESCRIPTION: Test one namespace object. Supported types are Integer,
* String, Buffer, Package, buffer_field, and field_unit.
* All other object types are simply ignored.
*
******************************************************************************/
static acpi_status
acpi_db_test_one_object(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value)
{
struct acpi_namespace_node *node;
union acpi_operand_object *obj_desc;
acpi_object_type local_type;
u32 bit_length = 0;
u32 byte_length = 0;
acpi_status status = AE_OK;
node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
obj_desc = node->object;
/*
* For the supported types, get the actual bit length or
* byte length. Map the type to one of Integer/String/Buffer.
*/
switch (node->type) {
case ACPI_TYPE_INTEGER:
/* Integer width is either 32 or 64 */
local_type = ACPI_TYPE_INTEGER;
bit_length = acpi_gbl_integer_bit_width;
break;
case ACPI_TYPE_STRING:
local_type = ACPI_TYPE_STRING;
byte_length = obj_desc->string.length;
break;
case ACPI_TYPE_BUFFER:
local_type = ACPI_TYPE_BUFFER;
byte_length = obj_desc->buffer.length;
bit_length = byte_length * 8;
break;
case ACPI_TYPE_PACKAGE:
local_type = ACPI_TYPE_PACKAGE;
break;
case ACPI_TYPE_FIELD_UNIT:
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_LOCAL_INDEX_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
local_type = ACPI_TYPE_FIELD_UNIT;
break;
case ACPI_TYPE_BUFFER_FIELD:
/*
* The returned object will be a Buffer if the field length
* is larger than the size of an Integer (32 or 64 bits
* depending on the DSDT version).
*/
local_type = ACPI_TYPE_INTEGER;
if (obj_desc) {
bit_length = obj_desc->common_field.bit_length;
byte_length = ACPI_ROUND_BITS_UP_TO_BYTES(bit_length);
if (bit_length > acpi_gbl_integer_bit_width) {
local_type = ACPI_TYPE_BUFFER;
}
}
break;
default:
/* Ignore all non-data types - Methods, Devices, Scopes, etc. */
return (AE_OK);
}
/* Emit the common prefix: Type:Name */
acpi_os_printf("%14s: %4.4s",
acpi_ut_get_type_name(node->type), node->name.ascii);
if (!obj_desc) {
acpi_os_printf(" No attached sub-object, ignoring\n");
return (AE_OK);
}
/* At this point, we have resolved the object to one of the major types */
switch (local_type) {
case ACPI_TYPE_INTEGER:
status = acpi_db_test_integer_type(node, bit_length);
break;
case ACPI_TYPE_STRING:
status = acpi_db_test_string_type(node, byte_length);
break;
case ACPI_TYPE_BUFFER:
status = acpi_db_test_buffer_type(node, bit_length);
break;
case ACPI_TYPE_PACKAGE:
status = acpi_db_test_package_type(node);
break;
case ACPI_TYPE_FIELD_UNIT:
status = acpi_db_test_field_unit_type(obj_desc);
break;
default:
acpi_os_printf(" Ignoring, type not implemented (%2.2X)",
local_type);
break;
}
/* Exit on error, but don't abort the namespace walk */
if (ACPI_FAILURE(status)) {
status = AE_OK;
}
acpi_os_printf("\n");
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_test_integer_type
*
* PARAMETERS: node - Parent NS node for the object
* bit_length - Actual length of the object. Used for
* support of arbitrary length field_unit
* and buffer_field objects.
*
* RETURN: Status
*
* DESCRIPTION: Test read/write for an Integer-valued object. Performs a
* write/read/compare of an arbitrary new value, then performs
* a write/read/compare of the original value.
*
******************************************************************************/
static acpi_status
acpi_db_test_integer_type(struct acpi_namespace_node *node, u32 bit_length)
{
union acpi_object *temp1 = NULL;
union acpi_object *temp2 = NULL;
union acpi_object *temp3 = NULL;
union acpi_object write_value;
u64 value_to_write;
acpi_status status;
if (bit_length > 64) {
acpi_os_printf(" Invalid length for an Integer: %u",
bit_length);
return (AE_OK);
}
/* Read the original value */
status = acpi_db_read_from_object(node, ACPI_TYPE_INTEGER, &temp1);
if (ACPI_FAILURE(status)) {
return (status);
}
acpi_os_printf(ACPI_DEBUG_LENGTH_FORMAT " %8.8X%8.8X",
bit_length, ACPI_ROUND_BITS_UP_TO_BYTES(bit_length),
ACPI_FORMAT_UINT64(temp1->integer.value));
value_to_write = ACPI_UINT64_MAX >> (64 - bit_length);
if (temp1->integer.value == value_to_write) {
value_to_write = 0;
}
/* Write a new value */
write_value.type = ACPI_TYPE_INTEGER;
write_value.integer.value = value_to_write;
status = acpi_db_write_to_object(node, &write_value);
if (ACPI_FAILURE(status)) {
goto exit;
}
/* Ensure that we can read back the new value */
status = acpi_db_read_from_object(node, ACPI_TYPE_INTEGER, &temp2);
if (ACPI_FAILURE(status)) {
goto exit;
}
if (temp2->integer.value != value_to_write) {
acpi_os_printf(" MISMATCH 2: %8.8X%8.8X, expecting %8.8X%8.8X",
ACPI_FORMAT_UINT64(temp2->integer.value),
ACPI_FORMAT_UINT64(value_to_write));
}
/* Write back the original value */
write_value.integer.value = temp1->integer.value;
status = acpi_db_write_to_object(node, &write_value);
if (ACPI_FAILURE(status)) {
goto exit;
}
/* Ensure that we can read back the original value */
status = acpi_db_read_from_object(node, ACPI_TYPE_INTEGER, &temp3);
if (ACPI_FAILURE(status)) {
goto exit;
}
if (temp3->integer.value != temp1->integer.value) {
acpi_os_printf(" MISMATCH 3: %8.8X%8.8X, expecting %8.8X%8.8X",
ACPI_FORMAT_UINT64(temp3->integer.value),
ACPI_FORMAT_UINT64(temp1->integer.value));
}
exit:
if (temp1) {
acpi_os_free(temp1);
}
if (temp2) {
acpi_os_free(temp2);
}
if (temp3) {
acpi_os_free(temp3);
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_test_buffer_type
*
* PARAMETERS: node - Parent NS node for the object
* bit_length - Actual length of the object.
*
* RETURN: Status
*
* DESCRIPTION: Test read/write for an Buffer-valued object. Performs a
* write/read/compare of an arbitrary new value, then performs
* a write/read/compare of the original value.
*
******************************************************************************/
static acpi_status
acpi_db_test_buffer_type(struct acpi_namespace_node *node, u32 bit_length)
{
union acpi_object *temp1 = NULL;
union acpi_object *temp2 = NULL;
union acpi_object *temp3 = NULL;
u8 *buffer;
union acpi_object write_value;
acpi_status status;
u32 byte_length;
u32 i;
u8 extra_bits;
byte_length = ACPI_ROUND_BITS_UP_TO_BYTES(bit_length);
if (byte_length == 0) {
acpi_os_printf(" Ignoring zero length buffer");
return (AE_OK);
}
/* Allocate a local buffer */
buffer = ACPI_ALLOCATE_ZEROED(byte_length);
if (!buffer) {
return (AE_NO_MEMORY);
}
/* Read the original value */
status = acpi_db_read_from_object(node, ACPI_TYPE_BUFFER, &temp1);
if (ACPI_FAILURE(status)) {
goto exit;
}
/* Emit a few bytes of the buffer */
acpi_os_printf(ACPI_DEBUG_LENGTH_FORMAT, bit_length,
temp1->buffer.length);
for (i = 0; ((i < 8) && (i < byte_length)); i++) {
acpi_os_printf(" %2.2X", temp1->buffer.pointer[i]);
}
acpi_os_printf("... ");
/*
* Write a new value.
*
* Handle possible extra bits at the end of the buffer. Can
* happen for field_units larger than an integer, but the bit
* count is not an integral number of bytes. Zero out the
* unused bits.
*/
memset(buffer, BUFFER_FILL_VALUE, byte_length);
extra_bits = bit_length % 8;
if (extra_bits) {
buffer[byte_length - 1] = ACPI_MASK_BITS_ABOVE(extra_bits);
}
write_value.type = ACPI_TYPE_BUFFER;
write_value.buffer.length = byte_length;
write_value.buffer.pointer = buffer;
status = acpi_db_write_to_object(node, &write_value);
if (ACPI_FAILURE(status)) {
goto exit;
}
/* Ensure that we can read back the new value */
status = acpi_db_read_from_object(node, ACPI_TYPE_BUFFER, &temp2);
if (ACPI_FAILURE(status)) {
goto exit;
}
if (memcmp(temp2->buffer.pointer, buffer, byte_length)) {
acpi_os_printf(" MISMATCH 2: New buffer value");
}
/* Write back the original value */
write_value.buffer.length = byte_length;
write_value.buffer.pointer = temp1->buffer.pointer;
status = acpi_db_write_to_object(node, &write_value);
if (ACPI_FAILURE(status)) {
goto exit;
}
/* Ensure that we can read back the original value */
status = acpi_db_read_from_object(node, ACPI_TYPE_BUFFER, &temp3);
if (ACPI_FAILURE(status)) {
goto exit;
}
if (memcmp(temp1->buffer.pointer, temp3->buffer.pointer, byte_length)) {
acpi_os_printf(" MISMATCH 3: While restoring original buffer");
}
exit:
ACPI_FREE(buffer);
if (temp1) {
acpi_os_free(temp1);
}
if (temp2) {
acpi_os_free(temp2);
}
if (temp3) {
acpi_os_free(temp3);
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_test_string_type
*
* PARAMETERS: node - Parent NS node for the object
* byte_length - Actual length of the object.
*
* RETURN: Status
*
* DESCRIPTION: Test read/write for an String-valued object. Performs a
* write/read/compare of an arbitrary new value, then performs
* a write/read/compare of the original value.
*
******************************************************************************/
static acpi_status
acpi_db_test_string_type(struct acpi_namespace_node *node, u32 byte_length)
{
union acpi_object *temp1 = NULL;
union acpi_object *temp2 = NULL;
union acpi_object *temp3 = NULL;
char *value_to_write = "Test String from AML Debugger";
union acpi_object write_value;
acpi_status status;
/* Read the original value */
status = acpi_db_read_from_object(node, ACPI_TYPE_STRING, &temp1);
if (ACPI_FAILURE(status)) {
return (status);
}
acpi_os_printf(ACPI_DEBUG_LENGTH_FORMAT " \"%s\"",
(temp1->string.length * 8), temp1->string.length,
temp1->string.pointer);
/* Write a new value */
write_value.type = ACPI_TYPE_STRING;
write_value.string.length = strlen(value_to_write);
write_value.string.pointer = value_to_write;
status = acpi_db_write_to_object(node, &write_value);
if (ACPI_FAILURE(status)) {
goto exit;
}
/* Ensure that we can read back the new value */
status = acpi_db_read_from_object(node, ACPI_TYPE_STRING, &temp2);
if (ACPI_FAILURE(status)) {
goto exit;
}
if (strcmp(temp2->string.pointer, value_to_write)) {
acpi_os_printf(" MISMATCH 2: %s, expecting %s",
temp2->string.pointer, value_to_write);
}
/* Write back the original value */
write_value.string.length = strlen(temp1->string.pointer);
write_value.string.pointer = temp1->string.pointer;
status = acpi_db_write_to_object(node, &write_value);
if (ACPI_FAILURE(status)) {
goto exit;
}
/* Ensure that we can read back the original value */
status = acpi_db_read_from_object(node, ACPI_TYPE_STRING, &temp3);
if (ACPI_FAILURE(status)) {
goto exit;
}
if (strcmp(temp1->string.pointer, temp3->string.pointer)) {
acpi_os_printf(" MISMATCH 3: %s, expecting %s",
temp3->string.pointer, temp1->string.pointer);
}
exit:
if (temp1) {
acpi_os_free(temp1);
}
if (temp2) {
acpi_os_free(temp2);
}
if (temp3) {
acpi_os_free(temp3);
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_test_package_type
*
* PARAMETERS: node - Parent NS node for the object
*
* RETURN: Status
*
* DESCRIPTION: Test read for a Package object.
*
******************************************************************************/
static acpi_status acpi_db_test_package_type(struct acpi_namespace_node *node)
{
union acpi_object *temp1 = NULL;
acpi_status status;
/* Read the original value */
status = acpi_db_read_from_object(node, ACPI_TYPE_PACKAGE, &temp1);
if (ACPI_FAILURE(status)) {
return (status);
}
acpi_os_printf(" %.2X Elements", temp1->package.count);
acpi_os_free(temp1);
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_test_field_unit_type
*
* PARAMETERS: obj_desc - A field unit object
*
* RETURN: Status
*
* DESCRIPTION: Test read/write on a named field unit.
*
******************************************************************************/
static acpi_status
acpi_db_test_field_unit_type(union acpi_operand_object *obj_desc)
{
union acpi_operand_object *region_obj;
u32 bit_length = 0;
u32 byte_length = 0;
acpi_status status = AE_OK;
union acpi_operand_object *ret_buffer_desc;
/* Supported spaces are memory/io/pci_config */
region_obj = obj_desc->field.region_obj;
switch (region_obj->region.space_id) {
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
case ACPI_ADR_SPACE_SYSTEM_IO:
case ACPI_ADR_SPACE_PCI_CONFIG:
/* Need the interpreter to execute */
acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
/* Exercise read-then-write */
status =
acpi_ex_read_data_from_field(NULL, obj_desc,
&ret_buffer_desc);
if (status == AE_OK) {
acpi_ex_write_data_to_field(ret_buffer_desc, obj_desc,
NULL);
acpi_ut_remove_reference(ret_buffer_desc);
}
acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
bit_length = obj_desc->common_field.bit_length;
byte_length = ACPI_ROUND_BITS_UP_TO_BYTES(bit_length);
acpi_os_printf(ACPI_DEBUG_LENGTH_FORMAT " [%s]", bit_length,
byte_length,
acpi_ut_get_region_name(region_obj->region.
space_id));
return (status);
default:
acpi_os_printf
(" %s address space is not supported in this command [%4.4s]",
acpi_ut_get_region_name(region_obj->region.space_id),
region_obj->region.node->name.ascii);
return (AE_OK);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_read_from_object
*
* PARAMETERS: node - Parent NS node for the object
* expected_type - Object type expected from the read
* value - Where the value read is returned
*
* RETURN: Status
*
* DESCRIPTION: Performs a read from the specified object by invoking the
* special debugger control method that reads the object. Thus,
* the AML interpreter is doing all of the work, increasing the
* validity of the test.
*
******************************************************************************/
static acpi_status
acpi_db_read_from_object(struct acpi_namespace_node *node,
acpi_object_type expected_type,
union acpi_object **value)
{
union acpi_object *ret_value;
struct acpi_object_list param_objects;
union acpi_object params[2];
struct acpi_buffer return_obj;
acpi_status status;
params[0].type = ACPI_TYPE_LOCAL_REFERENCE;
params[0].reference.actual_type = node->type;
params[0].reference.handle = ACPI_CAST_PTR(acpi_handle, node);
param_objects.count = 1;
param_objects.pointer = params;
return_obj.length = ACPI_ALLOCATE_BUFFER;
acpi_gbl_method_executing = TRUE;
status = acpi_evaluate_object(read_handle, NULL,
¶m_objects, &return_obj);
acpi_gbl_method_executing = FALSE;
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not read from object, %s",
acpi_format_exception(status));
return (status);
}
ret_value = (union acpi_object *)return_obj.pointer;
switch (ret_value->type) {
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_PACKAGE:
/*
* Did we receive the type we wanted? Most important for the
* Integer/Buffer case (when a field is larger than an Integer,
* it should return a Buffer).
*/
if (ret_value->type != expected_type) {
acpi_os_printf
(" Type mismatch: Expected %s, Received %s",
acpi_ut_get_type_name(expected_type),
acpi_ut_get_type_name(ret_value->type));
acpi_os_free(return_obj.pointer);
return (AE_TYPE);
}
*value = ret_value;
break;
default:
acpi_os_printf(" Unsupported return object type, %s",
acpi_ut_get_type_name(ret_value->type));
acpi_os_free(return_obj.pointer);
return (AE_TYPE);
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_write_to_object
*
* PARAMETERS: node - Parent NS node for the object
* value - Value to be written
*
* RETURN: Status
*
* DESCRIPTION: Performs a write to the specified object by invoking the
* special debugger control method that writes the object. Thus,
* the AML interpreter is doing all of the work, increasing the
* validity of the test.
*
******************************************************************************/
static acpi_status
acpi_db_write_to_object(struct acpi_namespace_node *node,
union acpi_object *value)
{
struct acpi_object_list param_objects;
union acpi_object params[2];
acpi_status status;
params[0].type = ACPI_TYPE_LOCAL_REFERENCE;
params[0].reference.actual_type = node->type;
params[0].reference.handle = ACPI_CAST_PTR(acpi_handle, node);
/* Copy the incoming user parameter */
memcpy(¶ms[1], value, sizeof(union acpi_object));
param_objects.count = 2;
param_objects.pointer = params;
acpi_gbl_method_executing = TRUE;
status = acpi_evaluate_object(write_handle, NULL, ¶m_objects, NULL);
acpi_gbl_method_executing = FALSE;
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not write to object, %s",
acpi_format_exception(status));
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_evaluate_all_predefined_names
*
* PARAMETERS: count_arg - Max number of methods to execute
*
* RETURN: None
*
* DESCRIPTION: Namespace batch execution. Execute predefined names in the
* namespace, up to the max count, if specified.
*
******************************************************************************/
static void acpi_db_evaluate_all_predefined_names(char *count_arg)
{
struct acpi_db_execute_walk info;
info.count = 0;
info.max_count = ACPI_UINT32_MAX;
if (count_arg) {
info.max_count = strtoul(count_arg, NULL, 0);
}
/* Search all nodes in namespace */
(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
acpi_db_evaluate_one_predefined_name, NULL,
(void *)&info, NULL);
acpi_os_printf("Evaluated %u predefined names in the namespace\n",
info.count);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_evaluate_one_predefined_name
*
* PARAMETERS: Callback from walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Batch execution module. Currently only executes predefined
* ACPI names.
*
******************************************************************************/
static acpi_status
acpi_db_evaluate_one_predefined_name(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value)
{
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
struct acpi_db_execute_walk *info =
(struct acpi_db_execute_walk *)context;
char *pathname;
const union acpi_predefined_info *predefined;
struct acpi_device_info *obj_info;
struct acpi_object_list param_objects;
union acpi_object params[ACPI_METHOD_NUM_ARGS];
union acpi_object *this_param;
struct acpi_buffer return_obj;
acpi_status status;
u16 arg_type_list;
u8 arg_count;
u8 arg_type;
u32 i;
/* The name must be a predefined ACPI name */
predefined = acpi_ut_match_predefined_method(node->name.ascii);
if (!predefined) {
return (AE_OK);
}
if (node->type == ACPI_TYPE_LOCAL_SCOPE) {
return (AE_OK);
}
pathname = acpi_ns_get_normalized_pathname(node, TRUE);
if (!pathname) {
return (AE_OK);
}
/* Get the object info for number of method parameters */
status = acpi_get_object_info(obj_handle, &obj_info);
if (ACPI_FAILURE(status)) {
ACPI_FREE(pathname);
return (status);
}
param_objects.count = 0;
param_objects.pointer = NULL;
if (obj_info->type == ACPI_TYPE_METHOD) {
/* Setup default parameters (with proper types) */
arg_type_list = predefined->info.argument_list;
arg_count = METHOD_GET_ARG_COUNT(arg_type_list);
/*
* Setup the ACPI-required number of arguments, regardless of what
* the actual method defines. If there is a difference, then the
* method is wrong and a warning will be issued during execution.
*/
this_param = params;
for (i = 0; i < arg_count; i++) {
arg_type = METHOD_GET_NEXT_TYPE(arg_type_list);
this_param->type = arg_type;
switch (arg_type) {
case ACPI_TYPE_INTEGER:
this_param->integer.value = 1;
break;
case ACPI_TYPE_STRING:
this_param->string.pointer =
"This is the default argument string";
this_param->string.length =
strlen(this_param->string.pointer);
break;
case ACPI_TYPE_BUFFER:
this_param->buffer.pointer = (u8 *)params; /* just a garbage buffer */
this_param->buffer.length = 48;
break;
case ACPI_TYPE_PACKAGE:
this_param->package.elements = NULL;
this_param->package.count = 0;
break;
default:
acpi_os_printf
("%s: Unsupported argument type: %u\n",
pathname, arg_type);
break;
}
this_param++;
}
param_objects.count = arg_count;
param_objects.pointer = params;
}
ACPI_FREE(obj_info);
return_obj.pointer = NULL;
return_obj.length = ACPI_ALLOCATE_BUFFER;
/* Do the actual method execution */
acpi_gbl_method_executing = TRUE;
status = acpi_evaluate_object(node, NULL, ¶m_objects, &return_obj);
acpi_os_printf("%-32s returned %s\n",
pathname, acpi_format_exception(status));
acpi_gbl_method_executing = FALSE;
ACPI_FREE(pathname);
/* Ignore status from method execution */
status = AE_OK;
/* Update count, check if we have executed enough methods */
info->count++;
if (info->count >= info->max_count) {
status = AE_CTRL_TERMINATE;
}
return (status);
}
| linux-master | drivers/acpi/acpica/dbtest.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: psargs - Parse AML opcode arguments
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "amlcode.h"
#include "acnamesp.h"
#include "acdispat.h"
#include "acconvert.h"
#define _COMPONENT ACPI_PARSER
ACPI_MODULE_NAME("psargs")
/* Local prototypes */
static u32
acpi_ps_get_next_package_length(struct acpi_parse_state *parser_state);
static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
*parser_state);
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_next_package_length
*
* PARAMETERS: parser_state - Current parser state object
*
* RETURN: Decoded package length. On completion, the AML pointer points
* past the length byte or bytes.
*
* DESCRIPTION: Decode and return a package length field.
* Note: Largest package length is 28 bits, from ACPI specification
*
******************************************************************************/
static u32
acpi_ps_get_next_package_length(struct acpi_parse_state *parser_state)
{
u8 *aml = parser_state->aml;
u32 package_length = 0;
u32 byte_count;
u8 byte_zero_mask = 0x3F; /* Default [0:5] */
ACPI_FUNCTION_TRACE(ps_get_next_package_length);
/*
* Byte 0 bits [6:7] contain the number of additional bytes
* used to encode the package length, either 0,1,2, or 3
*/
byte_count = (aml[0] >> 6);
parser_state->aml += ((acpi_size)byte_count + 1);
/* Get bytes 3, 2, 1 as needed */
while (byte_count) {
/*
* Final bit positions for the package length bytes:
* Byte3->[20:27]
* Byte2->[12:19]
* Byte1->[04:11]
* Byte0->[00:03]
*/
package_length |= (aml[byte_count] << ((byte_count << 3) - 4));
byte_zero_mask = 0x0F; /* Use bits [0:3] of byte 0 */
byte_count--;
}
/* Byte 0 is a special case, either bits [0:3] or [0:5] are used */
package_length |= (aml[0] & byte_zero_mask);
return_UINT32(package_length);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_next_package_end
*
* PARAMETERS: parser_state - Current parser state object
*
* RETURN: Pointer to end-of-package +1
*
* DESCRIPTION: Get next package length and return a pointer past the end of
* the package. Consumes the package length field
*
******************************************************************************/
u8 *acpi_ps_get_next_package_end(struct acpi_parse_state *parser_state)
{
u8 *start = parser_state->aml;
u32 package_length;
ACPI_FUNCTION_TRACE(ps_get_next_package_end);
/* Function below updates parser_state->Aml */
package_length = acpi_ps_get_next_package_length(parser_state);
return_PTR(start + package_length); /* end of package */
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_next_namestring
*
* PARAMETERS: parser_state - Current parser state object
*
* RETURN: Pointer to the start of the name string (pointer points into
* the AML.
*
* DESCRIPTION: Get next raw namestring within the AML stream. Handles all name
* prefix characters. Set parser state to point past the string.
* (Name is consumed from the AML.)
*
******************************************************************************/
char *acpi_ps_get_next_namestring(struct acpi_parse_state *parser_state)
{
u8 *start = parser_state->aml;
u8 *end = parser_state->aml;
ACPI_FUNCTION_TRACE(ps_get_next_namestring);
/* Point past any namestring prefix characters (backslash or carat) */
while (ACPI_IS_ROOT_PREFIX(*end) || ACPI_IS_PARENT_PREFIX(*end)) {
end++;
}
/* Decode the path prefix character */
switch (*end) {
case 0:
/* null_name */
if (end == start) {
start = NULL;
}
end++;
break;
case AML_DUAL_NAME_PREFIX:
/* Two name segments */
end += 1 + (2 * ACPI_NAMESEG_SIZE);
break;
case AML_MULTI_NAME_PREFIX:
/* Multiple name segments, 4 chars each, count in next byte */
end += 2 + (*(end + 1) * ACPI_NAMESEG_SIZE);
break;
default:
/* Single name segment */
end += ACPI_NAMESEG_SIZE;
break;
}
parser_state->aml = end;
return_PTR((char *)start);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_next_namepath
*
* PARAMETERS: parser_state - Current parser state object
* arg - Where the namepath will be stored
* arg_count - If the namepath points to a control method
* the method's argument is returned here.
* possible_method_call - Whether the namepath can possibly be the
* start of a method call
*
* RETURN: Status
*
* DESCRIPTION: Get next name (if method call, return # of required args).
* Names are looked up in the internal namespace to determine
* if the name represents a control method. If a method
* is found, the number of arguments to the method is returned.
* This information is critical for parsing to continue correctly.
*
******************************************************************************/
acpi_status
acpi_ps_get_next_namepath(struct acpi_walk_state *walk_state,
struct acpi_parse_state *parser_state,
union acpi_parse_object *arg, u8 possible_method_call)
{
acpi_status status;
char *path;
union acpi_parse_object *name_op;
union acpi_operand_object *method_desc;
struct acpi_namespace_node *node;
u8 *start = parser_state->aml;
ACPI_FUNCTION_TRACE(ps_get_next_namepath);
path = acpi_ps_get_next_namestring(parser_state);
acpi_ps_init_op(arg, AML_INT_NAMEPATH_OP);
/* Null path case is allowed, just exit */
if (!path) {
arg->common.value.name = path;
return_ACPI_STATUS(AE_OK);
}
/*
* Lookup the name in the internal namespace, starting with the current
* scope. We don't want to add anything new to the namespace here,
* however, so we use MODE_EXECUTE.
* Allow searching of the parent tree, but don't open a new scope -
* we just want to lookup the object (must be mode EXECUTE to perform
* the upsearch)
*/
status = acpi_ns_lookup(walk_state->scope_info, path,
ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
NULL, &node);
/*
* If this name is a control method invocation, we must
* setup the method call
*/
if (ACPI_SUCCESS(status) &&
possible_method_call && (node->type == ACPI_TYPE_METHOD)) {
if ((GET_CURRENT_ARG_TYPE(walk_state->arg_types) ==
ARGP_SUPERNAME)
|| (GET_CURRENT_ARG_TYPE(walk_state->arg_types) ==
ARGP_TARGET)) {
/*
* acpi_ps_get_next_namestring has increased the AML pointer past
* the method invocation namestring, so we need to restore the
* saved AML pointer back to the original method invocation
* namestring.
*/
walk_state->parser_state.aml = start;
walk_state->arg_count = 1;
acpi_ps_init_op(arg, AML_INT_METHODCALL_OP);
}
/* This name is actually a control method invocation */
method_desc = acpi_ns_get_attached_object(node);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Control Method invocation %4.4s - %p Desc %p Path=%p\n",
node->name.ascii, node, method_desc, path));
name_op = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP, start);
if (!name_op) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Change Arg into a METHOD CALL and attach name to it */
acpi_ps_init_op(arg, AML_INT_METHODCALL_OP);
name_op->common.value.name = path;
/* Point METHODCALL/NAME to the METHOD Node */
name_op->common.node = node;
acpi_ps_append_arg(arg, name_op);
if (!method_desc) {
ACPI_ERROR((AE_INFO,
"Control Method %p has no attached object",
node));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Control Method - %p Args %X\n",
node, method_desc->method.param_count));
/* Get the number of arguments to expect */
walk_state->arg_count = method_desc->method.param_count;
return_ACPI_STATUS(AE_OK);
}
/*
* Special handling if the name was not found during the lookup -
* some not_found cases are allowed
*/
if (status == AE_NOT_FOUND) {
/* 1) not_found is ok during load pass 1/2 (allow forward references) */
if ((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) !=
ACPI_PARSE_EXECUTE) {
status = AE_OK;
}
/* 2) not_found during a cond_ref_of(x) is ok by definition */
else if (walk_state->op->common.aml_opcode ==
AML_CONDITIONAL_REF_OF_OP) {
status = AE_OK;
}
/*
* 3) not_found while building a Package is ok at this point, we
* may flag as an error later if slack mode is not enabled.
* (Some ASL code depends on allowing this behavior)
*/
else if ((arg->common.parent) &&
((arg->common.parent->common.aml_opcode ==
AML_PACKAGE_OP)
|| (arg->common.parent->common.aml_opcode ==
AML_VARIABLE_PACKAGE_OP))) {
status = AE_OK;
}
}
/* Final exception check (may have been changed from code above) */
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->scope_info, path, status);
if ((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) ==
ACPI_PARSE_EXECUTE) {
/* Report a control method execution error */
status = acpi_ds_method_error(status, walk_state);
}
}
/* Save the namepath */
arg->common.value.name = path;
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_next_simple_arg
*
* PARAMETERS: parser_state - Current parser state object
* arg_type - The argument type (AML_*_ARG)
* arg - Where the argument is returned
*
* RETURN: None
*
* DESCRIPTION: Get the next simple argument (constant, string, or namestring)
*
******************************************************************************/
void
acpi_ps_get_next_simple_arg(struct acpi_parse_state *parser_state,
u32 arg_type, union acpi_parse_object *arg)
{
u32 length;
u16 opcode;
u8 *aml = parser_state->aml;
ACPI_FUNCTION_TRACE_U32(ps_get_next_simple_arg, arg_type);
switch (arg_type) {
case ARGP_BYTEDATA:
/* Get 1 byte from the AML stream */
opcode = AML_BYTE_OP;
arg->common.value.integer = (u64) *aml;
length = 1;
break;
case ARGP_WORDDATA:
/* Get 2 bytes from the AML stream */
opcode = AML_WORD_OP;
ACPI_MOVE_16_TO_64(&arg->common.value.integer, aml);
length = 2;
break;
case ARGP_DWORDDATA:
/* Get 4 bytes from the AML stream */
opcode = AML_DWORD_OP;
ACPI_MOVE_32_TO_64(&arg->common.value.integer, aml);
length = 4;
break;
case ARGP_QWORDDATA:
/* Get 8 bytes from the AML stream */
opcode = AML_QWORD_OP;
ACPI_MOVE_64_TO_64(&arg->common.value.integer, aml);
length = 8;
break;
case ARGP_CHARLIST:
/* Get a pointer to the string, point past the string */
opcode = AML_STRING_OP;
arg->common.value.string = ACPI_CAST_PTR(char, aml);
/* Find the null terminator */
length = 0;
while (aml[length]) {
length++;
}
length++;
break;
case ARGP_NAME:
case ARGP_NAMESTRING:
acpi_ps_init_op(arg, AML_INT_NAMEPATH_OP);
arg->common.value.name =
acpi_ps_get_next_namestring(parser_state);
return_VOID;
default:
ACPI_ERROR((AE_INFO, "Invalid ArgType 0x%X", arg_type));
return_VOID;
}
acpi_ps_init_op(arg, opcode);
parser_state->aml += length;
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_next_field
*
* PARAMETERS: parser_state - Current parser state object
*
* RETURN: A newly allocated FIELD op
*
* DESCRIPTION: Get next field (named_field, reserved_field, or access_field)
*
******************************************************************************/
static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
*parser_state)
{
u8 *aml;
union acpi_parse_object *field;
union acpi_parse_object *arg = NULL;
u16 opcode;
u32 name;
u8 access_type;
u8 access_attribute;
u8 access_length;
u32 pkg_length;
u8 *pkg_end;
u32 buffer_length;
ACPI_FUNCTION_TRACE(ps_get_next_field);
ASL_CV_CAPTURE_COMMENTS_ONLY(parser_state);
aml = parser_state->aml;
/* Determine field type */
switch (ACPI_GET8(parser_state->aml)) {
case AML_FIELD_OFFSET_OP:
opcode = AML_INT_RESERVEDFIELD_OP;
parser_state->aml++;
break;
case AML_FIELD_ACCESS_OP:
opcode = AML_INT_ACCESSFIELD_OP;
parser_state->aml++;
break;
case AML_FIELD_CONNECTION_OP:
opcode = AML_INT_CONNECTION_OP;
parser_state->aml++;
break;
case AML_FIELD_EXT_ACCESS_OP:
opcode = AML_INT_EXTACCESSFIELD_OP;
parser_state->aml++;
break;
default:
opcode = AML_INT_NAMEDFIELD_OP;
break;
}
/* Allocate a new field op */
field = acpi_ps_alloc_op(opcode, aml);
if (!field) {
return_PTR(NULL);
}
/* Decode the field type */
ASL_CV_CAPTURE_COMMENTS_ONLY(parser_state);
switch (opcode) {
case AML_INT_NAMEDFIELD_OP:
/* Get the 4-character name */
ACPI_MOVE_32_TO_32(&name, parser_state->aml);
acpi_ps_set_name(field, name);
parser_state->aml += ACPI_NAMESEG_SIZE;
ASL_CV_CAPTURE_COMMENTS_ONLY(parser_state);
#ifdef ACPI_ASL_COMPILER
/*
* Because the package length isn't represented as a parse tree object,
* take comments surrounding this and add to the previously created
* parse node.
*/
if (field->common.inline_comment) {
field->common.name_comment =
field->common.inline_comment;
}
field->common.inline_comment = acpi_gbl_current_inline_comment;
acpi_gbl_current_inline_comment = NULL;
#endif
/* Get the length which is encoded as a package length */
field->common.value.size =
acpi_ps_get_next_package_length(parser_state);
break;
case AML_INT_RESERVEDFIELD_OP:
/* Get the length which is encoded as a package length */
field->common.value.size =
acpi_ps_get_next_package_length(parser_state);
break;
case AML_INT_ACCESSFIELD_OP:
case AML_INT_EXTACCESSFIELD_OP:
/*
* Get access_type and access_attrib and merge into the field Op
* access_type is first operand, access_attribute is second. stuff
* these bytes into the node integer value for convenience.
*/
/* Get the two bytes (Type/Attribute) */
access_type = ACPI_GET8(parser_state->aml);
parser_state->aml++;
access_attribute = ACPI_GET8(parser_state->aml);
parser_state->aml++;
field->common.value.integer = (u8)access_type;
field->common.value.integer |= (u16)(access_attribute << 8);
/* This opcode has a third byte, access_length */
if (opcode == AML_INT_EXTACCESSFIELD_OP) {
access_length = ACPI_GET8(parser_state->aml);
parser_state->aml++;
field->common.value.integer |=
(u32)(access_length << 16);
}
break;
case AML_INT_CONNECTION_OP:
/*
* Argument for Connection operator can be either a Buffer
* (resource descriptor), or a name_string.
*/
aml = parser_state->aml;
if (ACPI_GET8(parser_state->aml) == AML_BUFFER_OP) {
parser_state->aml++;
ASL_CV_CAPTURE_COMMENTS_ONLY(parser_state);
pkg_end = parser_state->aml;
pkg_length =
acpi_ps_get_next_package_length(parser_state);
pkg_end += pkg_length;
ASL_CV_CAPTURE_COMMENTS_ONLY(parser_state);
if (parser_state->aml < pkg_end) {
/* Non-empty list */
arg =
acpi_ps_alloc_op(AML_INT_BYTELIST_OP, aml);
if (!arg) {
acpi_ps_free_op(field);
return_PTR(NULL);
}
/* Get the actual buffer length argument */
opcode = ACPI_GET8(parser_state->aml);
parser_state->aml++;
ASL_CV_CAPTURE_COMMENTS_ONLY(parser_state);
switch (opcode) {
case AML_BYTE_OP: /* AML_BYTEDATA_ARG */
buffer_length =
ACPI_GET8(parser_state->aml);
parser_state->aml += 1;
break;
case AML_WORD_OP: /* AML_WORDDATA_ARG */
buffer_length =
ACPI_GET16(parser_state->aml);
parser_state->aml += 2;
break;
case AML_DWORD_OP: /* AML_DWORDATA_ARG */
buffer_length =
ACPI_GET32(parser_state->aml);
parser_state->aml += 4;
break;
default:
buffer_length = 0;
break;
}
/* Fill in bytelist data */
ASL_CV_CAPTURE_COMMENTS_ONLY(parser_state);
arg->named.value.size = buffer_length;
arg->named.data = parser_state->aml;
}
/* Skip to End of byte data */
parser_state->aml = pkg_end;
} else {
arg = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP, aml);
if (!arg) {
acpi_ps_free_op(field);
return_PTR(NULL);
}
/* Get the Namestring argument */
arg->common.value.name =
acpi_ps_get_next_namestring(parser_state);
}
/* Link the buffer/namestring to parent (CONNECTION_OP) */
acpi_ps_append_arg(field, arg);
break;
default:
/* Opcode was set in previous switch */
break;
}
return_PTR(field);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_next_arg
*
* PARAMETERS: walk_state - Current state
* parser_state - Current parser state object
* arg_type - The argument type (AML_*_ARG)
* return_arg - Where the next arg is returned
*
* RETURN: Status, and an op object containing the next argument.
*
* DESCRIPTION: Get next argument (including complex list arguments that require
* pushing the parser stack)
*
******************************************************************************/
acpi_status
acpi_ps_get_next_arg(struct acpi_walk_state *walk_state,
struct acpi_parse_state *parser_state,
u32 arg_type, union acpi_parse_object **return_arg)
{
union acpi_parse_object *arg = NULL;
union acpi_parse_object *prev = NULL;
union acpi_parse_object *field;
u32 subop;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE_PTR(ps_get_next_arg, parser_state);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Expected argument type ARGP: %s (%2.2X)\n",
acpi_ut_get_argument_type_name(arg_type), arg_type));
switch (arg_type) {
case ARGP_BYTEDATA:
case ARGP_WORDDATA:
case ARGP_DWORDDATA:
case ARGP_CHARLIST:
case ARGP_NAME:
case ARGP_NAMESTRING:
/* Constants, strings, and namestrings are all the same size */
arg = acpi_ps_alloc_op(AML_BYTE_OP, parser_state->aml);
if (!arg) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
acpi_ps_get_next_simple_arg(parser_state, arg_type, arg);
break;
case ARGP_PKGLENGTH:
/* Package length, nothing returned */
parser_state->pkg_end =
acpi_ps_get_next_package_end(parser_state);
break;
case ARGP_FIELDLIST:
if (parser_state->aml < parser_state->pkg_end) {
/* Non-empty list */
while (parser_state->aml < parser_state->pkg_end) {
field = acpi_ps_get_next_field(parser_state);
if (!field) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
if (prev) {
prev->common.next = field;
} else {
arg = field;
}
prev = field;
}
/* Skip to End of byte data */
parser_state->aml = parser_state->pkg_end;
}
break;
case ARGP_BYTELIST:
if (parser_state->aml < parser_state->pkg_end) {
/* Non-empty list */
arg = acpi_ps_alloc_op(AML_INT_BYTELIST_OP,
parser_state->aml);
if (!arg) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Fill in bytelist data */
arg->common.value.size = (u32)
ACPI_PTR_DIFF(parser_state->pkg_end,
parser_state->aml);
arg->named.data = parser_state->aml;
/* Skip to End of byte data */
parser_state->aml = parser_state->pkg_end;
}
break;
case ARGP_SIMPLENAME:
case ARGP_NAME_OR_REF:
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"**** SimpleName/NameOrRef: %s (%2.2X)\n",
acpi_ut_get_argument_type_name(arg_type),
arg_type));
subop = acpi_ps_peek_opcode(parser_state);
if (subop == 0 ||
acpi_ps_is_leading_char(subop) ||
ACPI_IS_ROOT_PREFIX(subop) ||
ACPI_IS_PARENT_PREFIX(subop)) {
/* null_name or name_string */
arg =
acpi_ps_alloc_op(AML_INT_NAMEPATH_OP,
parser_state->aml);
if (!arg) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
status =
acpi_ps_get_next_namepath(walk_state, parser_state,
arg,
ACPI_NOT_METHOD_CALL);
} else {
/* Single complex argument, nothing returned */
walk_state->arg_count = 1;
}
break;
case ARGP_TARGET:
case ARGP_SUPERNAME:
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"**** Target/Supername: %s (%2.2X)\n",
acpi_ut_get_argument_type_name(arg_type),
arg_type));
subop = acpi_ps_peek_opcode(parser_state);
if (subop == 0 ||
acpi_ps_is_leading_char(subop) ||
ACPI_IS_ROOT_PREFIX(subop) ||
ACPI_IS_PARENT_PREFIX(subop)) {
/* NULL target (zero). Convert to a NULL namepath */
arg =
acpi_ps_alloc_op(AML_INT_NAMEPATH_OP,
parser_state->aml);
if (!arg) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
status =
acpi_ps_get_next_namepath(walk_state, parser_state,
arg,
ACPI_POSSIBLE_METHOD_CALL);
if (arg->common.aml_opcode == AML_INT_METHODCALL_OP) {
/* Free method call op and corresponding namestring sub-ob */
acpi_ps_free_op(arg->common.value.arg);
acpi_ps_free_op(arg);
arg = NULL;
walk_state->arg_count = 1;
}
} else {
/* Single complex argument, nothing returned */
walk_state->arg_count = 1;
}
break;
case ARGP_DATAOBJ:
case ARGP_TERMARG:
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"**** TermArg/DataObj: %s (%2.2X)\n",
acpi_ut_get_argument_type_name(arg_type),
arg_type));
/* Single complex argument, nothing returned */
walk_state->arg_count = 1;
break;
case ARGP_DATAOBJLIST:
case ARGP_TERMLIST:
case ARGP_OBJLIST:
if (parser_state->aml < parser_state->pkg_end) {
/* Non-empty list of variable arguments, nothing returned */
walk_state->arg_count = ACPI_VAR_ARGS;
}
break;
default:
ACPI_ERROR((AE_INFO, "Invalid ArgType: 0x%X", arg_type));
status = AE_AML_OPERAND_TYPE;
break;
}
*return_arg = arg;
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/psargs.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: utdebug - Debug print/trace routines
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#define EXPORT_ACPI_INTERFACES
#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utdebug")
#ifdef ACPI_DEBUG_OUTPUT
static acpi_thread_id acpi_gbl_previous_thread_id = (acpi_thread_id) 0xFFFFFFFF;
static const char *acpi_gbl_function_entry_prefix = "----Entry";
static const char *acpi_gbl_function_exit_prefix = "----Exit-";
/*******************************************************************************
*
* FUNCTION: acpi_ut_init_stack_ptr_trace
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Save the current CPU stack pointer at subsystem startup
*
******************************************************************************/
void acpi_ut_init_stack_ptr_trace(void)
{
acpi_size current_sp;
#pragma GCC diagnostic push
#if defined(__GNUC__) && __GNUC__ >= 12
#pragma GCC diagnostic ignored "-Wdangling-pointer="
#endif
acpi_gbl_entry_stack_pointer = ¤t_sp;
#pragma GCC diagnostic pop
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_track_stack_ptr
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Save the current CPU stack pointer
*
******************************************************************************/
void acpi_ut_track_stack_ptr(void)
{
acpi_size current_sp;
if (¤t_sp < acpi_gbl_lowest_stack_pointer) {
acpi_gbl_lowest_stack_pointer = ¤t_sp;
}
if (acpi_gbl_nesting_level > acpi_gbl_deepest_nesting) {
acpi_gbl_deepest_nesting = acpi_gbl_nesting_level;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_trim_function_name
*
* PARAMETERS: function_name - Ascii string containing a procedure name
*
* RETURN: Updated pointer to the function name
*
* DESCRIPTION: Remove the "Acpi" prefix from the function name, if present.
* This allows compiler macros such as __func__ to be used
* with no change to the debug output.
*
******************************************************************************/
static const char *acpi_ut_trim_function_name(const char *function_name)
{
/* All Function names are longer than 4 chars, check is safe */
if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_MIXED) {
/* This is the case where the original source has not been modified */
return (function_name + 4);
}
if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_LOWER) {
/* This is the case where the source has been 'linuxized' */
return (function_name + 5);
}
return (function_name);
}
/*******************************************************************************
*
* FUNCTION: acpi_debug_print
*
* PARAMETERS: requested_debug_level - Requested debug print level
* line_number - Caller's line number (for error output)
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* format - Printf format field
* ... - Optional printf arguments
*
* RETURN: None
*
* DESCRIPTION: Print error message with prefix consisting of the module name,
* line number, and component ID.
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_debug_print(u32 requested_debug_level,
u32 line_number,
const char *function_name,
const char *module_name,
u32 component_id, const char *format, ...)
{
acpi_thread_id thread_id;
va_list args;
#ifdef ACPI_APPLICATION
int fill_count;
#endif
/* Check if debug output enabled */
if (!ACPI_IS_DEBUG_ENABLED(requested_debug_level, component_id)) {
return;
}
/*
* Thread tracking and context switch notification
*/
thread_id = acpi_os_get_thread_id();
if (thread_id != acpi_gbl_previous_thread_id) {
if (ACPI_LV_THREADS & acpi_dbg_level) {
acpi_os_printf
("\n**** Context Switch from TID %u to TID %u ****\n\n",
(u32)acpi_gbl_previous_thread_id, (u32)thread_id);
}
acpi_gbl_previous_thread_id = thread_id;
acpi_gbl_nesting_level = 0;
}
/*
* Display the module name, current line number, thread ID (if requested),
* current procedure nesting level, and the current procedure name
*/
acpi_os_printf("%9s-%04d ", module_name, line_number);
#ifdef ACPI_APPLICATION
/*
* For acpi_exec/iASL only, emit the thread ID and nesting level.
* Note: nesting level is really only useful during a single-thread
* execution. Otherwise, multiple threads will keep resetting the
* level.
*/
if (ACPI_LV_THREADS & acpi_dbg_level) {
acpi_os_printf("[%u] ", (u32)thread_id);
}
fill_count = 48 - acpi_gbl_nesting_level -
strlen(acpi_ut_trim_function_name(function_name));
if (fill_count < 0) {
fill_count = 0;
}
acpi_os_printf("[%02d] %*s",
acpi_gbl_nesting_level, acpi_gbl_nesting_level + 1, " ");
acpi_os_printf("%s%*s: ",
acpi_ut_trim_function_name(function_name), fill_count,
" ");
#else
acpi_os_printf("%-22.22s: ", acpi_ut_trim_function_name(function_name));
#endif
va_start(args, format);
acpi_os_vprintf(format, args);
va_end(args);
}
ACPI_EXPORT_SYMBOL(acpi_debug_print)
/*******************************************************************************
*
* FUNCTION: acpi_debug_print_raw
*
* PARAMETERS: requested_debug_level - Requested debug print level
* line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* format - Printf format field
* ... - Optional printf arguments
*
* RETURN: None
*
* DESCRIPTION: Print message with no headers. Has same interface as
* debug_print so that the same macros can be used.
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_debug_print_raw(u32 requested_debug_level,
u32 line_number,
const char *function_name,
const char *module_name,
u32 component_id, const char *format, ...)
{
va_list args;
/* Check if debug output enabled */
if (!ACPI_IS_DEBUG_ENABLED(requested_debug_level, component_id)) {
return;
}
va_start(args, format);
acpi_os_vprintf(format, args);
va_end(args);
}
ACPI_EXPORT_SYMBOL(acpi_debug_print_raw)
/*******************************************************************************
*
* FUNCTION: acpi_ut_trace
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
*
* RETURN: None
*
* DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level
*
******************************************************************************/
void
acpi_ut_trace(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id)
{
acpi_gbl_nesting_level++;
acpi_ut_track_stack_ptr();
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s\n",
acpi_gbl_function_entry_prefix);
}
}
ACPI_EXPORT_SYMBOL(acpi_ut_trace)
/*******************************************************************************
*
* FUNCTION: acpi_ut_trace_ptr
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* pointer - Pointer to display
*
* RETURN: None
*
* DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level
*
******************************************************************************/
void
acpi_ut_trace_ptr(u32 line_number,
const char *function_name,
const char *module_name,
u32 component_id, const void *pointer)
{
acpi_gbl_nesting_level++;
acpi_ut_track_stack_ptr();
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s %p\n",
acpi_gbl_function_entry_prefix, pointer);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_trace_str
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* string - Additional string to display
*
* RETURN: None
*
* DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level
*
******************************************************************************/
void
acpi_ut_trace_str(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id, const char *string)
{
acpi_gbl_nesting_level++;
acpi_ut_track_stack_ptr();
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s %s\n",
acpi_gbl_function_entry_prefix, string);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_trace_u32
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* integer - Integer to display
*
* RETURN: None
*
* DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level
*
******************************************************************************/
void
acpi_ut_trace_u32(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id, u32 integer)
{
acpi_gbl_nesting_level++;
acpi_ut_track_stack_ptr();
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s %08X\n",
acpi_gbl_function_entry_prefix, integer);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_exit
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
*
* RETURN: None
*
* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level
*
******************************************************************************/
void
acpi_ut_exit(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id)
{
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s\n",
acpi_gbl_function_exit_prefix);
}
if (acpi_gbl_nesting_level) {
acpi_gbl_nesting_level--;
}
}
ACPI_EXPORT_SYMBOL(acpi_ut_exit)
/*******************************************************************************
*
* FUNCTION: acpi_ut_status_exit
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* status - Exit status code
*
* RETURN: None
*
* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level. Prints exit status also.
*
******************************************************************************/
void
acpi_ut_status_exit(u32 line_number,
const char *function_name,
const char *module_name,
u32 component_id, acpi_status status)
{
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
if (ACPI_SUCCESS(status)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name,
module_name, component_id, "%s %s\n",
acpi_gbl_function_exit_prefix,
acpi_format_exception(status));
} else {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name,
module_name, component_id,
"%s ****Exception****: %s\n",
acpi_gbl_function_exit_prefix,
acpi_format_exception(status));
}
}
if (acpi_gbl_nesting_level) {
acpi_gbl_nesting_level--;
}
}
ACPI_EXPORT_SYMBOL(acpi_ut_status_exit)
/*******************************************************************************
*
* FUNCTION: acpi_ut_value_exit
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* value - Value to be printed with exit msg
*
* RETURN: None
*
* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level. Prints exit value also.
*
******************************************************************************/
void
acpi_ut_value_exit(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id, u64 value)
{
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s %8.8X%8.8X\n",
acpi_gbl_function_exit_prefix,
ACPI_FORMAT_UINT64(value));
}
if (acpi_gbl_nesting_level) {
acpi_gbl_nesting_level--;
}
}
ACPI_EXPORT_SYMBOL(acpi_ut_value_exit)
/*******************************************************************************
*
* FUNCTION: acpi_ut_ptr_exit
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* ptr - Pointer to display
*
* RETURN: None
*
* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level. Prints exit value also.
*
******************************************************************************/
void
acpi_ut_ptr_exit(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id, u8 *ptr)
{
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s %p\n",
acpi_gbl_function_exit_prefix, ptr);
}
if (acpi_gbl_nesting_level) {
acpi_gbl_nesting_level--;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_str_exit
*
* PARAMETERS: line_number - Caller's line number
* function_name - Caller's procedure name
* module_name - Caller's module name
* component_id - Caller's component ID
* string - String to display
*
* RETURN: None
*
* DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
* set in debug_level. Prints exit value also.
*
******************************************************************************/
void
acpi_ut_str_exit(u32 line_number,
const char *function_name,
const char *module_name, u32 component_id, const char *string)
{
/* Check if enabled up-front for performance */
if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
acpi_debug_print(ACPI_LV_FUNCTIONS,
line_number, function_name, module_name,
component_id, "%s %s\n",
acpi_gbl_function_exit_prefix, string);
}
if (acpi_gbl_nesting_level) {
acpi_gbl_nesting_level--;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_trace_point
*
* PARAMETERS: type - Trace event type
* begin - TRUE if before execution
* aml - Executed AML address
* pathname - Object path
* pointer - Pointer to the related object
*
* RETURN: None
*
* DESCRIPTION: Interpreter execution trace.
*
******************************************************************************/
void
acpi_trace_point(acpi_trace_event_type type, u8 begin, u8 *aml, char *pathname)
{
ACPI_FUNCTION_ENTRY();
acpi_ex_trace_point(type, begin, aml, pathname);
#ifdef ACPI_USE_SYSTEM_TRACER
acpi_os_trace_point(type, begin, aml, pathname);
#endif
}
ACPI_EXPORT_SYMBOL(acpi_trace_point)
#endif
| linux-master | drivers/acpi/acpica/utdebug.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: evxfevnt - External Interfaces, ACPI event disable/enable
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#define EXPORT_ACPI_INTERFACES
#include <acpi/acpi.h>
#include "accommon.h"
#include "actables.h"
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evxfevnt")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/*******************************************************************************
*
* FUNCTION: acpi_enable
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Transfers the system into ACPI mode.
*
******************************************************************************/
acpi_status acpi_enable(void)
{
acpi_status status;
int retry;
ACPI_FUNCTION_TRACE(acpi_enable);
/* ACPI tables must be present */
if (acpi_gbl_fadt_index == ACPI_INVALID_TABLE_INDEX) {
return_ACPI_STATUS(AE_NO_ACPI_TABLES);
}
/* If the Hardware Reduced flag is set, machine is always in acpi mode */
if (acpi_gbl_reduced_hardware) {
return_ACPI_STATUS(AE_OK);
}
/* Check current mode */
if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
ACPI_DEBUG_PRINT((ACPI_DB_INIT,
"System is already in ACPI mode\n"));
return_ACPI_STATUS(AE_OK);
}
/* Transition to ACPI mode */
status = acpi_hw_set_mode(ACPI_SYS_MODE_ACPI);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO,
"Could not transition to ACPI mode"));
return_ACPI_STATUS(status);
}
/* Sanity check that transition succeeded */
for (retry = 0; retry < 30000; ++retry) {
if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
if (retry != 0)
ACPI_WARNING((AE_INFO,
"Platform took > %d00 usec to enter ACPI mode", retry));
return_ACPI_STATUS(AE_OK);
}
acpi_os_stall(100); /* 100 usec */
}
ACPI_ERROR((AE_INFO, "Hardware did not enter ACPI mode"));
return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
}
ACPI_EXPORT_SYMBOL(acpi_enable)
/*******************************************************************************
*
* FUNCTION: acpi_disable
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Transfers the system into LEGACY (non-ACPI) mode.
*
******************************************************************************/
acpi_status acpi_disable(void)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(acpi_disable);
/* If the Hardware Reduced flag is set, machine is always in acpi mode */
if (acpi_gbl_reduced_hardware) {
return_ACPI_STATUS(AE_OK);
}
if (acpi_hw_get_mode() == ACPI_SYS_MODE_LEGACY) {
ACPI_DEBUG_PRINT((ACPI_DB_INIT,
"System is already in legacy (non-ACPI) mode\n"));
} else {
/* Transition to LEGACY mode */
status = acpi_hw_set_mode(ACPI_SYS_MODE_LEGACY);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO,
"Could not exit ACPI mode to legacy mode"));
return_ACPI_STATUS(status);
}
ACPI_DEBUG_PRINT((ACPI_DB_INIT, "ACPI mode disabled\n"));
}
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_disable)
/*******************************************************************************
*
* FUNCTION: acpi_enable_event
*
* PARAMETERS: event - The fixed eventto be enabled
* flags - Reserved
*
* RETURN: Status
*
* DESCRIPTION: Enable an ACPI event (fixed)
*
******************************************************************************/
acpi_status acpi_enable_event(u32 event, u32 flags)
{
acpi_status status = AE_OK;
u32 value;
ACPI_FUNCTION_TRACE(acpi_enable_event);
/* If Hardware Reduced flag is set, there are no fixed events */
if (acpi_gbl_reduced_hardware) {
return_ACPI_STATUS(AE_OK);
}
/* Decode the Fixed Event */
if (event > ACPI_EVENT_MAX) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*
* Enable the requested fixed event (by writing a one to the enable
* register bit)
*/
status =
acpi_write_bit_register(acpi_gbl_fixed_event_info[event].
enable_register_id, ACPI_ENABLE_EVENT);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Make sure that the hardware responded */
status =
acpi_read_bit_register(acpi_gbl_fixed_event_info[event].
enable_register_id, &value);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (value != 1) {
ACPI_ERROR((AE_INFO,
"Could not enable %s event",
acpi_ut_get_event_name(event)));
return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
}
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_enable_event)
/*******************************************************************************
*
* FUNCTION: acpi_disable_event
*
* PARAMETERS: event - The fixed event to be disabled
* flags - Reserved
*
* RETURN: Status
*
* DESCRIPTION: Disable an ACPI event (fixed)
*
******************************************************************************/
acpi_status acpi_disable_event(u32 event, u32 flags)
{
acpi_status status = AE_OK;
u32 value;
ACPI_FUNCTION_TRACE(acpi_disable_event);
/* If Hardware Reduced flag is set, there are no fixed events */
if (acpi_gbl_reduced_hardware) {
return_ACPI_STATUS(AE_OK);
}
/* Decode the Fixed Event */
if (event > ACPI_EVENT_MAX) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*
* Disable the requested fixed event (by writing a zero to the enable
* register bit)
*/
status =
acpi_write_bit_register(acpi_gbl_fixed_event_info[event].
enable_register_id, ACPI_DISABLE_EVENT);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status =
acpi_read_bit_register(acpi_gbl_fixed_event_info[event].
enable_register_id, &value);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (value != 0) {
ACPI_ERROR((AE_INFO,
"Could not disable %s events",
acpi_ut_get_event_name(event)));
return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
}
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_disable_event)
/*******************************************************************************
*
* FUNCTION: acpi_clear_event
*
* PARAMETERS: event - The fixed event to be cleared
*
* RETURN: Status
*
* DESCRIPTION: Clear an ACPI event (fixed)
*
******************************************************************************/
acpi_status acpi_clear_event(u32 event)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(acpi_clear_event);
/* If Hardware Reduced flag is set, there are no fixed events */
if (acpi_gbl_reduced_hardware) {
return_ACPI_STATUS(AE_OK);
}
/* Decode the Fixed Event */
if (event > ACPI_EVENT_MAX) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*
* Clear the requested fixed event (By writing a one to the status
* register bit)
*/
status =
acpi_write_bit_register(acpi_gbl_fixed_event_info[event].
status_register_id, ACPI_CLEAR_STATUS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_clear_event)
/*******************************************************************************
*
* FUNCTION: acpi_get_event_status
*
* PARAMETERS: event - The fixed event
* event_status - Where the current status of the event will
* be returned
*
* RETURN: Status
*
* DESCRIPTION: Obtains and returns the current status of the event
*
******************************************************************************/
acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status)
{
acpi_status status;
acpi_event_status local_event_status = 0;
u32 in_byte;
ACPI_FUNCTION_TRACE(acpi_get_event_status);
if (!event_status) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Decode the Fixed Event */
if (event > ACPI_EVENT_MAX) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Fixed event currently can be dispatched? */
if (acpi_gbl_fixed_event_handlers[event].handler) {
local_event_status |= ACPI_EVENT_FLAG_HAS_HANDLER;
}
/* Fixed event currently enabled? */
status =
acpi_read_bit_register(acpi_gbl_fixed_event_info[event].
enable_register_id, &in_byte);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (in_byte) {
local_event_status |=
(ACPI_EVENT_FLAG_ENABLED | ACPI_EVENT_FLAG_ENABLE_SET);
}
/* Fixed event currently active? */
status =
acpi_read_bit_register(acpi_gbl_fixed_event_info[event].
status_register_id, &in_byte);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (in_byte) {
local_event_status |= ACPI_EVENT_FLAG_STATUS_SET;
}
(*event_status) = local_event_status;
return_ACPI_STATUS(AE_OK);
}
ACPI_EXPORT_SYMBOL(acpi_get_event_status)
#endif /* !ACPI_REDUCED_HARDWARE */
| linux-master | drivers/acpi/acpica/evxfevnt.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: nsinit - namespace initialization
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acdispat.h"
#include "acinterp.h"
#include "acevents.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsinit")
/* Local prototypes */
static acpi_status
acpi_ns_init_one_object(acpi_handle obj_handle,
u32 level, void *context, void **return_value);
static acpi_status
acpi_ns_init_one_device(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value);
static acpi_status
acpi_ns_find_ini_methods(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value);
/*******************************************************************************
*
* FUNCTION: acpi_ns_initialize_objects
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Walk the entire namespace and perform any necessary
* initialization on the objects found therein
*
******************************************************************************/
acpi_status acpi_ns_initialize_objects(void)
{
acpi_status status;
struct acpi_init_walk_info info;
ACPI_FUNCTION_TRACE(ns_initialize_objects);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Completing Initialization of ACPI Objects\n"));
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"**** Starting initialization of namespace objects ****\n"));
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
"Final data object initialization: "));
/* Clear the info block */
memset(&info, 0, sizeof(struct acpi_init_walk_info));
/* Walk entire namespace from the supplied root */
/*
* TBD: will become ACPI_TYPE_PACKAGE as this type object
* is now the only one that supports deferred initialization
* (forward references).
*/
status = acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, acpi_ns_init_one_object,
NULL, &info, NULL);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
"Namespace contains %u (0x%X) objects\n",
info.object_count, info.object_count));
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"%u Control Methods found\n%u Op Regions found\n",
info.method_count, info.op_region_count));
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_initialize_devices
*
* PARAMETERS: None
*
* RETURN: acpi_status
*
* DESCRIPTION: Walk the entire namespace and initialize all ACPI devices.
* This means running _INI on all present devices.
*
* Note: We install PCI config space handler on region access,
* not here.
*
******************************************************************************/
acpi_status acpi_ns_initialize_devices(u32 flags)
{
acpi_status status = AE_OK;
struct acpi_device_walk_info info;
acpi_handle handle;
ACPI_FUNCTION_TRACE(ns_initialize_devices);
if (!(flags & ACPI_NO_DEVICE_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Initializing ACPI Devices\n"));
/* Init counters */
info.device_count = 0;
info.num_STA = 0;
info.num_INI = 0;
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
"Initializing Device/Processor/Thermal objects "
"and executing _INI/_STA methods:\n"));
/* Tree analysis: find all subtrees that contain _INI methods */
status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, FALSE,
acpi_ns_find_ini_methods, NULL,
&info, NULL);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
/* Allocate the evaluation information block */
info.evaluate_info =
ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
if (!info.evaluate_info) {
status = AE_NO_MEMORY;
goto error_exit;
}
/*
* Execute the "global" _INI method that may appear at the root.
* This support is provided for Windows compatibility (Vista+) and
* is not part of the ACPI specification.
*/
info.evaluate_info->prefix_node = acpi_gbl_root_node;
info.evaluate_info->relative_pathname = METHOD_NAME__INI;
info.evaluate_info->parameters = NULL;
info.evaluate_info->flags = ACPI_IGNORE_RETURN_VALUE;
status = acpi_ns_evaluate(info.evaluate_info);
if (ACPI_SUCCESS(status)) {
info.num_INI++;
}
/*
* Execute \_SB._INI.
* There appears to be a strict order requirement for \_SB._INI,
* which should be evaluated before any _REG evaluations.
*/
status = acpi_get_handle(NULL, "\\_SB", &handle);
if (ACPI_SUCCESS(status)) {
memset(info.evaluate_info, 0,
sizeof(struct acpi_evaluate_info));
info.evaluate_info->prefix_node = handle;
info.evaluate_info->relative_pathname =
METHOD_NAME__INI;
info.evaluate_info->parameters = NULL;
info.evaluate_info->flags = ACPI_IGNORE_RETURN_VALUE;
status = acpi_ns_evaluate(info.evaluate_info);
if (ACPI_SUCCESS(status)) {
info.num_INI++;
}
}
}
/*
* Run all _REG methods
*
* Note: Any objects accessed by the _REG methods will be automatically
* initialized, even if they contain executable AML (see the call to
* acpi_ns_initialize_objects below).
*
* Note: According to the ACPI specification, we actually needn't execute
* _REG for system_memory/system_io operation regions, but for PCI_Config
* operation regions, it is required to evaluate _REG for those on a PCI
* root bus that doesn't contain _BBN object. So this code is kept here
* in order not to break things.
*/
if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Executing _REG OpRegion methods\n"));
status = acpi_ev_initialize_op_regions();
if (ACPI_FAILURE(status)) {
goto error_exit;
}
}
if (!(flags & ACPI_NO_DEVICE_INIT)) {
/* Walk namespace to execute all _INIs on present devices */
status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, FALSE,
acpi_ns_init_one_device, NULL,
&info, NULL);
/*
* Any _OSI requests should be completed by now. If the BIOS has
* requested any Windows OSI strings, we will always truncate
* I/O addresses to 16 bits -- for Windows compatibility.
*/
if (acpi_gbl_osi_data >= ACPI_OSI_WIN_2000) {
acpi_gbl_truncate_io_addresses = TRUE;
}
ACPI_FREE(info.evaluate_info);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
" Executed %u _INI methods requiring %u _STA executions "
"(examined %u objects)\n",
info.num_INI, info.num_STA,
info.device_count));
}
return_ACPI_STATUS(status);
error_exit:
ACPI_EXCEPTION((AE_INFO, status, "During device initialization"));
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_init_one_package
*
* PARAMETERS: obj_handle - Node
* level - Current nesting level
* context - Not used
* return_value - Not used
*
* RETURN: Status
*
* DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every package
* within the namespace. Used during dynamic load of an SSDT.
*
******************************************************************************/
acpi_status
acpi_ns_init_one_package(acpi_handle obj_handle,
u32 level, void *context, void **return_value)
{
acpi_status status;
union acpi_operand_object *obj_desc;
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
return (AE_OK);
}
/* Exit if package is already initialized */
if (obj_desc->package.flags & AOPOBJ_DATA_VALID) {
return (AE_OK);
}
status = acpi_ds_get_package_arguments(obj_desc);
if (ACPI_FAILURE(status)) {
return (AE_OK);
}
status =
acpi_ut_walk_package_tree(obj_desc, NULL,
acpi_ds_init_package_element, NULL);
if (ACPI_FAILURE(status)) {
return (AE_OK);
}
obj_desc->package.flags |= AOPOBJ_DATA_VALID;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_init_one_object
*
* PARAMETERS: obj_handle - Node
* level - Current nesting level
* context - Points to a init info struct
* return_value - Not used
*
* RETURN: Status
*
* DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object
* within the namespace.
*
* Currently, the only objects that require initialization are:
* 1) Methods
* 2) Op Regions
*
******************************************************************************/
static acpi_status
acpi_ns_init_one_object(acpi_handle obj_handle,
u32 level, void *context, void **return_value)
{
acpi_object_type type;
acpi_status status = AE_OK;
struct acpi_init_walk_info *info =
(struct acpi_init_walk_info *)context;
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
union acpi_operand_object *obj_desc;
ACPI_FUNCTION_NAME(ns_init_one_object);
info->object_count++;
/* And even then, we are only interested in a few object types */
type = acpi_ns_get_type(obj_handle);
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
return (AE_OK);
}
/* Increment counters for object types we are looking for */
switch (type) {
case ACPI_TYPE_REGION:
info->op_region_count++;
break;
case ACPI_TYPE_BUFFER_FIELD:
info->field_count++;
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
info->field_count++;
break;
case ACPI_TYPE_BUFFER:
info->buffer_count++;
break;
case ACPI_TYPE_PACKAGE:
info->package_count++;
break;
default:
/* No init required, just exit now */
return (AE_OK);
}
/* If the object is already initialized, nothing else to do */
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
return (AE_OK);
}
/* Must lock the interpreter before executing AML code */
acpi_ex_enter_interpreter();
/*
* Only initialization of Package objects can be deferred, in order
* to support forward references.
*/
switch (type) {
case ACPI_TYPE_LOCAL_BANK_FIELD:
/* TBD: bank_fields do not require deferred init, remove this code */
info->field_init++;
status = acpi_ds_get_bank_field_arguments(obj_desc);
break;
case ACPI_TYPE_PACKAGE:
/* Complete the initialization/resolution of the package object */
info->package_init++;
status =
acpi_ns_init_one_package(obj_handle, level, NULL, NULL);
break;
default:
/* No other types should get here */
status = AE_TYPE;
ACPI_EXCEPTION((AE_INFO, status,
"Opcode is not deferred [%4.4s] (%s)",
acpi_ut_get_node_name(node),
acpi_ut_get_type_name(type)));
break;
}
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not execute arguments for [%4.4s] (%s)",
acpi_ut_get_node_name(node),
acpi_ut_get_type_name(type)));
}
/*
* We ignore errors from above, and always return OK, since we don't want
* to abort the walk on any single error.
*/
acpi_ex_exit_interpreter();
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_find_ini_methods
*
* PARAMETERS: acpi_walk_callback
*
* RETURN: acpi_status
*
* DESCRIPTION: Called during namespace walk. Finds objects named _INI under
* device/processor/thermal objects, and marks the entire subtree
* with a SUBTREE_HAS_INI flag. This flag is used during the
* subsequent device initialization walk to avoid entire subtrees
* that do not contain an _INI.
*
******************************************************************************/
static acpi_status
acpi_ns_find_ini_methods(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value)
{
struct acpi_device_walk_info *info =
ACPI_CAST_PTR(struct acpi_device_walk_info, context);
struct acpi_namespace_node *node;
struct acpi_namespace_node *parent_node;
/* Keep count of device/processor/thermal objects */
node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
if ((node->type == ACPI_TYPE_DEVICE) ||
(node->type == ACPI_TYPE_PROCESSOR) ||
(node->type == ACPI_TYPE_THERMAL)) {
info->device_count++;
return (AE_OK);
}
/* We are only looking for methods named _INI */
if (!ACPI_COMPARE_NAMESEG(node->name.ascii, METHOD_NAME__INI)) {
return (AE_OK);
}
/*
* The only _INI methods that we care about are those that are
* present under Device, Processor, and Thermal objects.
*/
parent_node = node->parent;
switch (parent_node->type) {
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
/* Mark parent and bubble up the INI present flag to the root */
while (parent_node) {
parent_node->flags |= ANOBJ_SUBTREE_HAS_INI;
parent_node = parent_node->parent;
}
break;
default:
break;
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_init_one_device
*
* PARAMETERS: acpi_walk_callback
*
* RETURN: acpi_status
*
* DESCRIPTION: This is called once per device soon after ACPI is enabled
* to initialize each device. It determines if the device is
* present, and if so, calls _INI.
*
******************************************************************************/
static acpi_status
acpi_ns_init_one_device(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value)
{
struct acpi_device_walk_info *walk_info =
ACPI_CAST_PTR(struct acpi_device_walk_info, context);
struct acpi_evaluate_info *info = walk_info->evaluate_info;
u32 flags;
acpi_status status;
struct acpi_namespace_node *device_node;
ACPI_FUNCTION_TRACE(ns_init_one_device);
/* We are interested in Devices, Processors and thermal_zones only */
device_node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
if ((device_node->type != ACPI_TYPE_DEVICE) &&
(device_node->type != ACPI_TYPE_PROCESSOR) &&
(device_node->type != ACPI_TYPE_THERMAL)) {
return_ACPI_STATUS(AE_OK);
}
/*
* Because of an earlier namespace analysis, all subtrees that contain an
* _INI method are tagged.
*
* If this device subtree does not contain any _INI methods, we
* can exit now and stop traversing this entire subtree.
*/
if (!(device_node->flags & ANOBJ_SUBTREE_HAS_INI)) {
return_ACPI_STATUS(AE_CTRL_DEPTH);
}
/*
* Run _STA to determine if this device is present and functioning. We
* must know this information for two important reasons (from ACPI spec):
*
* 1) We can only run _INI if the device is present.
* 2) We must abort the device tree walk on this subtree if the device is
* not present and is not functional (we will not examine the children)
*
* The _STA method is not required to be present under the device, we
* assume the device is present if _STA does not exist.
*/
ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
(ACPI_TYPE_METHOD, device_node, METHOD_NAME__STA));
status = acpi_ut_execute_STA(device_node, &flags);
if (ACPI_FAILURE(status)) {
/* Ignore error and move on to next device */
return_ACPI_STATUS(AE_OK);
}
/*
* Flags == -1 means that _STA was not found. In this case, we assume that
* the device is both present and functional.
*
* From the ACPI spec, description of _STA:
*
* "If a device object (including the processor object) does not have an
* _STA object, then OSPM assumes that all of the above bits are set (in
* other words, the device is present, ..., and functioning)"
*/
if (flags != ACPI_UINT32_MAX) {
walk_info->num_STA++;
}
/*
* Examine the PRESENT and FUNCTIONING status bits
*
* Note: ACPI spec does not seem to specify behavior for the present but
* not functioning case, so we assume functioning if present.
*/
if (!(flags & ACPI_STA_DEVICE_PRESENT)) {
/* Device is not present, we must examine the Functioning bit */
if (flags & ACPI_STA_DEVICE_FUNCTIONING) {
/*
* Device is not present but is "functioning". In this case,
* we will not run _INI, but we continue to examine the children
* of this device.
*
* From the ACPI spec, description of _STA: (note - no mention
* of whether to run _INI or not on the device in question)
*
* "_STA may return bit 0 clear (not present) with bit 3 set
* (device is functional). This case is used to indicate a valid
* device for which no device driver should be loaded (for example,
* a bridge device.) Children of this device may be present and
* valid. OSPM should continue enumeration below a device whose
* _STA returns this bit combination"
*/
return_ACPI_STATUS(AE_OK);
} else {
/*
* Device is not present and is not functioning. We must abort the
* walk of this subtree immediately -- don't look at the children
* of such a device.
*
* From the ACPI spec, description of _INI:
*
* "If the _STA method indicates that the device is not present,
* OSPM will not run the _INI and will not examine the children
* of the device for _INI methods"
*/
return_ACPI_STATUS(AE_CTRL_DEPTH);
}
}
/*
* The device is present or is assumed present if no _STA exists.
* Run the _INI if it exists (not required to exist)
*
* Note: We know there is an _INI within this subtree, but it may not be
* under this particular device, it may be lower in the branch.
*/
if (!ACPI_COMPARE_NAMESEG(device_node->name.ascii, "_SB_") ||
device_node->parent != acpi_gbl_root_node) {
ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
(ACPI_TYPE_METHOD, device_node,
METHOD_NAME__INI));
memset(info, 0, sizeof(struct acpi_evaluate_info));
info->prefix_node = device_node;
info->relative_pathname = METHOD_NAME__INI;
info->parameters = NULL;
info->flags = ACPI_IGNORE_RETURN_VALUE;
status = acpi_ns_evaluate(info);
if (ACPI_SUCCESS(status)) {
walk_info->num_INI++;
}
#ifdef ACPI_DEBUG_OUTPUT
else if (status != AE_NOT_FOUND) {
/* Ignore error and move on to next device */
char *scope_name =
acpi_ns_get_normalized_pathname(device_node, TRUE);
ACPI_EXCEPTION((AE_INFO, status,
"during %s._INI execution",
scope_name));
ACPI_FREE(scope_name);
}
#endif
}
/* Ignore errors from above */
status = AE_OK;
/*
* The _INI method has been run if present; call the Global Initialization
* Handler for this device.
*/
if (acpi_gbl_init_handler) {
status =
acpi_gbl_init_handler(device_node, ACPI_INIT_DEVICE_INI);
}
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/nsinit.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: nsaccess - Top-level functions for accessing ACPI namespace
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "amlcode.h"
#include "acnamesp.h"
#include "acdispat.h"
#ifdef ACPI_ASL_COMPILER
#include "acdisasm.h"
#endif
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsaccess")
/*******************************************************************************
*
* FUNCTION: acpi_ns_root_initialize
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Allocate and initialize the default root named objects
*
* MUTEX: Locks namespace for entire execution
*
******************************************************************************/
acpi_status acpi_ns_root_initialize(void)
{
acpi_status status;
const struct acpi_predefined_names *init_val = NULL;
struct acpi_namespace_node *new_node;
struct acpi_namespace_node *prev_node = NULL;
union acpi_operand_object *obj_desc;
acpi_string val = NULL;
ACPI_FUNCTION_TRACE(ns_root_initialize);
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* The global root ptr is initially NULL, so a non-NULL value indicates
* that acpi_ns_root_initialize() has already been called; just return.
*/
if (acpi_gbl_root_node) {
status = AE_OK;
goto unlock_and_exit;
}
/*
* Tell the rest of the subsystem that the root is initialized
* (This is OK because the namespace is locked)
*/
acpi_gbl_root_node = &acpi_gbl_root_node_struct;
/* Enter the predefined names in the name table */
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Entering predefined entries into namespace\n"));
/*
* Create the initial (default) namespace.
* This namespace looks like something similar to this:
*
* ACPI Namespace (from Namespace Root):
* 0 _GPE Scope 00203160 00
* 0 _PR_ Scope 002031D0 00
* 0 _SB_ Device 00203240 00 Notify Object: 0020ADD8
* 0 _SI_ Scope 002032B0 00
* 0 _TZ_ Device 00203320 00
* 0 _REV Integer 00203390 00 = 0000000000000002
* 0 _OS_ String 00203488 00 Len 14 "Microsoft Windows NT"
* 0 _GL_ Mutex 00203580 00 Object 002035F0
* 0 _OSI Method 00203678 00 Args 1 Len 0000 Aml 00000000
*/
for (init_val = acpi_gbl_pre_defined_names; init_val->name; init_val++) {
status = AE_OK;
/* _OSI is optional for now, will be permanent later */
if (!strcmp(init_val->name, "_OSI")
&& !acpi_gbl_create_osi_method) {
continue;
}
/*
* Create, init, and link the new predefined name
* Note: No need to use acpi_ns_lookup here because all the
* predefined names are at the root level. It is much easier to
* just create and link the new node(s) here.
*/
new_node =
acpi_ns_create_node(*ACPI_CAST_PTR(u32, init_val->name));
if (!new_node) {
status = AE_NO_MEMORY;
goto unlock_and_exit;
}
new_node->descriptor_type = ACPI_DESC_TYPE_NAMED;
new_node->type = init_val->type;
if (!prev_node) {
acpi_gbl_root_node_struct.child = new_node;
} else {
prev_node->peer = new_node;
}
new_node->parent = &acpi_gbl_root_node_struct;
prev_node = new_node;
/*
* Name entered successfully. If entry in pre_defined_names[] specifies
* an initial value, create the initial value.
*/
if (init_val->val) {
status = acpi_os_predefined_override(init_val, &val);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO,
"Could not override predefined %s",
init_val->name));
}
if (!val) {
val = init_val->val;
}
/*
* Entry requests an initial value, allocate a
* descriptor for it.
*/
obj_desc =
acpi_ut_create_internal_object(init_val->type);
if (!obj_desc) {
status = AE_NO_MEMORY;
goto unlock_and_exit;
}
/*
* Convert value string from table entry to
* internal representation. Only types actually
* used for initial values are implemented here.
*/
switch (init_val->type) {
case ACPI_TYPE_METHOD:
obj_desc->method.param_count =
(u8) ACPI_TO_INTEGER(val);
obj_desc->common.flags |= AOPOBJ_DATA_VALID;
#if defined (ACPI_ASL_COMPILER)
/* Save the parameter count for the iASL compiler */
new_node->value = obj_desc->method.param_count;
#else
/* Mark this as a very SPECIAL method (_OSI) */
obj_desc->method.info_flags =
ACPI_METHOD_INTERNAL_ONLY;
obj_desc->method.dispatch.implementation =
acpi_ut_osi_implementation;
#endif
break;
case ACPI_TYPE_INTEGER:
obj_desc->integer.value = ACPI_TO_INTEGER(val);
break;
case ACPI_TYPE_STRING:
/* Build an object around the static string */
obj_desc->string.length = (u32)strlen(val);
obj_desc->string.pointer = val;
obj_desc->common.flags |= AOPOBJ_STATIC_POINTER;
break;
case ACPI_TYPE_MUTEX:
obj_desc->mutex.node = new_node;
obj_desc->mutex.sync_level =
(u8) (ACPI_TO_INTEGER(val) - 1);
/* Create a mutex */
status =
acpi_os_create_mutex(&obj_desc->mutex.
os_mutex);
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference(obj_desc);
goto unlock_and_exit;
}
/* Special case for ACPI Global Lock */
if (strcmp(init_val->name, "_GL_") == 0) {
acpi_gbl_global_lock_mutex = obj_desc;
/* Create additional counting semaphore for global lock */
status =
acpi_os_create_semaphore(1, 0,
&acpi_gbl_global_lock_semaphore);
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference
(obj_desc);
goto unlock_and_exit;
}
}
break;
default:
ACPI_ERROR((AE_INFO,
"Unsupported initial type value 0x%X",
init_val->type));
acpi_ut_remove_reference(obj_desc);
obj_desc = NULL;
continue;
}
/* Store pointer to value descriptor in the Node */
status = acpi_ns_attach_object(new_node, obj_desc,
obj_desc->common.type);
/* Remove local reference to the object */
acpi_ut_remove_reference(obj_desc);
}
}
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
/* Save a handle to "_GPE", it is always present */
if (ACPI_SUCCESS(status)) {
status = acpi_ns_get_node(NULL, "\\_GPE", ACPI_NS_NO_UPSEARCH,
&acpi_gbl_fadt_gpe_device);
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_lookup
*
* PARAMETERS: scope_info - Current scope info block
* pathname - Search pathname, in internal format
* (as represented in the AML stream)
* type - Type associated with name
* interpreter_mode - IMODE_LOAD_PASS2 => add name if not found
* flags - Flags describing the search restrictions
* walk_state - Current state of the walk
* return_node - Where the Node is placed (if found
* or created successfully)
*
* RETURN: Status
*
* DESCRIPTION: Find or enter the passed name in the name space.
* Log an error if name not found in Exec mode.
*
* MUTEX: Assumes namespace is locked.
*
******************************************************************************/
acpi_status
acpi_ns_lookup(union acpi_generic_state *scope_info,
char *pathname,
acpi_object_type type,
acpi_interpreter_mode interpreter_mode,
u32 flags,
struct acpi_walk_state *walk_state,
struct acpi_namespace_node **return_node)
{
acpi_status status;
char *path = pathname;
char *external_path;
struct acpi_namespace_node *prefix_node;
struct acpi_namespace_node *current_node = NULL;
struct acpi_namespace_node *this_node = NULL;
u32 num_segments;
u32 num_carats;
acpi_name simple_name;
acpi_object_type type_to_check_for;
acpi_object_type this_search_type;
u32 search_parent_flag = ACPI_NS_SEARCH_PARENT;
u32 local_flags;
acpi_interpreter_mode local_interpreter_mode;
ACPI_FUNCTION_TRACE(ns_lookup);
if (!return_node) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
local_flags = flags &
~(ACPI_NS_ERROR_IF_FOUND | ACPI_NS_OVERRIDE_IF_FOUND |
ACPI_NS_SEARCH_PARENT);
*return_node = ACPI_ENTRY_NOT_FOUND;
acpi_gbl_ns_lookup_count++;
if (!acpi_gbl_root_node) {
return_ACPI_STATUS(AE_NO_NAMESPACE);
}
/* Get the prefix scope. A null scope means use the root scope */
if ((!scope_info) || (!scope_info->scope.node)) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Null scope prefix, using root node (%p)\n",
acpi_gbl_root_node));
prefix_node = acpi_gbl_root_node;
} else {
prefix_node = scope_info->scope.node;
if (ACPI_GET_DESCRIPTOR_TYPE(prefix_node) !=
ACPI_DESC_TYPE_NAMED) {
ACPI_ERROR((AE_INFO, "%p is not a namespace node [%s]",
prefix_node,
acpi_ut_get_descriptor_name(prefix_node)));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
if (!(flags & ACPI_NS_PREFIX_IS_SCOPE)) {
/*
* This node might not be a actual "scope" node (such as a
* Device/Method, etc.) It could be a Package or other object
* node. Backup up the tree to find the containing scope node.
*/
while (!acpi_ns_opens_scope(prefix_node->type) &&
prefix_node->type != ACPI_TYPE_ANY) {
prefix_node = prefix_node->parent;
}
}
}
/* Save type. TBD: may be no longer necessary */
type_to_check_for = type;
/*
* Begin examination of the actual pathname
*/
if (!pathname) {
/* A Null name_path is allowed and refers to the root */
num_segments = 0;
this_node = acpi_gbl_root_node;
path = "";
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Null Pathname (Zero segments), Flags=%X\n",
flags));
} else {
/*
* Name pointer is valid (and must be in internal name format)
*
* Check for scope prefixes:
*
* As represented in the AML stream, a namepath consists of an
* optional scope prefix followed by a name segment part.
*
* If present, the scope prefix is either a Root Prefix (in
* which case the name is fully qualified), or one or more
* Parent Prefixes (in which case the name's scope is relative
* to the current scope).
*/
if (*path == (u8) AML_ROOT_PREFIX) {
/* Pathname is fully qualified, start from the root */
this_node = acpi_gbl_root_node;
search_parent_flag = ACPI_NS_NO_UPSEARCH;
/* Point to name segment part */
path++;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Path is absolute from root [%p]\n",
this_node));
} else {
/* Pathname is relative to current scope, start there */
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Searching relative to prefix scope [%4.4s] (%p)\n",
acpi_ut_get_node_name(prefix_node),
prefix_node));
/*
* Handle multiple Parent Prefixes (carat) by just getting
* the parent node for each prefix instance.
*/
this_node = prefix_node;
num_carats = 0;
while (*path == (u8) AML_PARENT_PREFIX) {
/* Name is fully qualified, no search rules apply */
search_parent_flag = ACPI_NS_NO_UPSEARCH;
/*
* Point past this prefix to the name segment
* part or the next Parent Prefix
*/
path++;
/* Backup to the parent node */
num_carats++;
this_node = this_node->parent;
if (!this_node) {
/*
* Current scope has no parent scope. Externalize
* the internal path for error message.
*/
status =
acpi_ns_externalize_name
(ACPI_UINT32_MAX, pathname, NULL,
&external_path);
if (ACPI_SUCCESS(status)) {
ACPI_ERROR((AE_INFO,
"%s: Path has too many parent prefixes (^)",
external_path));
ACPI_FREE(external_path);
}
return_ACPI_STATUS(AE_NOT_FOUND);
}
}
if (search_parent_flag == ACPI_NS_NO_UPSEARCH) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Search scope is [%4.4s], path has %u carat(s)\n",
acpi_ut_get_node_name
(this_node), num_carats));
}
}
/*
* Determine the number of ACPI name segments in this pathname.
*
* The segment part consists of either:
* - A Null name segment (0)
* - A dual_name_prefix followed by two 4-byte name segments
* - A multi_name_prefix followed by a byte indicating the
* number of segments and the segments themselves.
* - A single 4-byte name segment
*
* Examine the name prefix opcode, if any, to determine the number of
* segments.
*/
switch (*path) {
case 0:
/*
* Null name after a root or parent prefixes. We already
* have the correct target node and there are no name segments.
*/
num_segments = 0;
type = this_node->type;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Prefix-only Pathname (Zero name segments), Flags=%X\n",
flags));
break;
case AML_DUAL_NAME_PREFIX:
/* More than one name_seg, search rules do not apply */
search_parent_flag = ACPI_NS_NO_UPSEARCH;
/* Two segments, point to first name segment */
num_segments = 2;
path++;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Dual Pathname (2 segments, Flags=%X)\n",
flags));
break;
case AML_MULTI_NAME_PREFIX:
/* More than one name_seg, search rules do not apply */
search_parent_flag = ACPI_NS_NO_UPSEARCH;
/* Extract segment count, point to first name segment */
path++;
num_segments = (u32) (u8) * path;
path++;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Multi Pathname (%u Segments, Flags=%X)\n",
num_segments, flags));
break;
default:
/*
* Not a Null name, no Dual or Multi prefix, hence there is
* only one name segment and Pathname is already pointing to it.
*/
num_segments = 1;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Simple Pathname (1 segment, Flags=%X)\n",
flags));
break;
}
ACPI_DEBUG_EXEC(acpi_ns_print_pathname(num_segments, path));
}
/*
* Search namespace for each segment of the name. Loop through and
* verify (or add to the namespace) each name segment.
*
* The object type is significant only at the last name
* segment. (We don't care about the types along the path, only
* the type of the final target object.)
*/
this_search_type = ACPI_TYPE_ANY;
current_node = this_node;
while (num_segments && current_node) {
num_segments--;
if (!num_segments) {
/* This is the last segment, enable typechecking */
this_search_type = type;
/*
* Only allow automatic parent search (search rules) if the caller
* requested it AND we have a single, non-fully-qualified name_seg
*/
if ((search_parent_flag != ACPI_NS_NO_UPSEARCH) &&
(flags & ACPI_NS_SEARCH_PARENT)) {
local_flags |= ACPI_NS_SEARCH_PARENT;
}
/* Set error flag according to caller */
if (flags & ACPI_NS_ERROR_IF_FOUND) {
local_flags |= ACPI_NS_ERROR_IF_FOUND;
}
/* Set override flag according to caller */
if (flags & ACPI_NS_OVERRIDE_IF_FOUND) {
local_flags |= ACPI_NS_OVERRIDE_IF_FOUND;
}
}
/* Handle opcodes that create a new name_seg via a full name_path */
local_interpreter_mode = interpreter_mode;
if ((flags & ACPI_NS_PREFIX_MUST_EXIST) && (num_segments > 0)) {
/* Every element of the path must exist (except for the final name_seg) */
local_interpreter_mode = ACPI_IMODE_EXECUTE;
}
/* Extract one ACPI name from the front of the pathname */
ACPI_MOVE_32_TO_32(&simple_name, path);
/* Try to find the single (4 character) ACPI name */
status =
acpi_ns_search_and_enter(simple_name, walk_state,
current_node,
local_interpreter_mode,
this_search_type, local_flags,
&this_node);
if (ACPI_FAILURE(status)) {
if (status == AE_NOT_FOUND) {
#if !defined ACPI_ASL_COMPILER /* Note: iASL reports this error by itself, not needed here */
if (flags & ACPI_NS_PREFIX_MUST_EXIST) {
acpi_os_printf(ACPI_MSG_BIOS_ERROR
"Object does not exist: %4.4s\n",
(char *)&simple_name);
}
#endif
/* Name not found in ACPI namespace */
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Name [%4.4s] not found in scope [%4.4s] %p\n",
(char *)&simple_name,
(char *)¤t_node->name,
current_node));
}
#ifdef ACPI_EXEC_APP
if ((status == AE_ALREADY_EXISTS) &&
(this_node->flags & ANOBJ_NODE_EARLY_INIT)) {
this_node->flags &= ~ANOBJ_NODE_EARLY_INIT;
status = AE_OK;
}
#endif
#ifdef ACPI_ASL_COMPILER
/*
* If this ACPI name already exists within the namespace as an
* external declaration, then mark the external as a conflicting
* declaration and proceed to process the current node as if it did
* not exist in the namespace. If this node is not processed as
* normal, then it could cause improper namespace resolution
* by failing to open a new scope.
*/
if (acpi_gbl_disasm_flag &&
(status == AE_ALREADY_EXISTS) &&
((this_node->flags & ANOBJ_IS_EXTERNAL) ||
(walk_state
&& walk_state->opcode == AML_EXTERNAL_OP))) {
this_node->flags &= ~ANOBJ_IS_EXTERNAL;
this_node->type = (u8)this_search_type;
if (walk_state->opcode != AML_EXTERNAL_OP) {
acpi_dm_mark_external_conflict
(this_node);
}
break;
}
#endif
*return_node = this_node;
return_ACPI_STATUS(status);
}
/* More segments to follow? */
if (num_segments > 0) {
/*
* If we have an alias to an object that opens a scope (such as a
* device or processor), we need to dereference the alias here so
* that we can access any children of the original node (via the
* remaining segments).
*/
if (this_node->type == ACPI_TYPE_LOCAL_ALIAS) {
if (!this_node->object) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
if (acpi_ns_opens_scope
(((struct acpi_namespace_node *)
this_node->object)->type)) {
this_node =
(struct acpi_namespace_node *)
this_node->object;
}
}
}
/* Special handling for the last segment (num_segments == 0) */
else {
/*
* Sanity typecheck of the target object:
*
* If 1) This is the last segment (num_segments == 0)
* 2) And we are looking for a specific type
* (Not checking for TYPE_ANY)
* 3) Which is not an alias
* 4) Which is not a local type (TYPE_SCOPE)
* 5) And the type of target object is known (not TYPE_ANY)
* 6) And target object does not match what we are looking for
*
* Then we have a type mismatch. Just warn and ignore it.
*/
if ((type_to_check_for != ACPI_TYPE_ANY) &&
(type_to_check_for != ACPI_TYPE_LOCAL_ALIAS) &&
(type_to_check_for != ACPI_TYPE_LOCAL_METHOD_ALIAS)
&& (type_to_check_for != ACPI_TYPE_LOCAL_SCOPE)
&& (this_node->type != ACPI_TYPE_ANY)
&& (this_node->type != type_to_check_for)) {
/* Complain about a type mismatch */
ACPI_WARNING((AE_INFO,
"NsLookup: Type mismatch on %4.4s (%s), searching for (%s)",
ACPI_CAST_PTR(char, &simple_name),
acpi_ut_get_type_name(this_node->
type),
acpi_ut_get_type_name
(type_to_check_for)));
}
/*
* If this is the last name segment and we are not looking for a
* specific type, but the type of found object is known, use that
* type to (later) see if it opens a scope.
*/
if (type == ACPI_TYPE_ANY) {
type = this_node->type;
}
}
/* Point to next name segment and make this node current */
path += ACPI_NAMESEG_SIZE;
current_node = this_node;
}
/* Always check if we need to open a new scope */
if (!(flags & ACPI_NS_DONT_OPEN_SCOPE) && (walk_state)) {
/*
* If entry is a type which opens a scope, push the new scope on the
* scope stack.
*/
if (acpi_ns_opens_scope(type)) {
status =
acpi_ds_scope_stack_push(this_node, type,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
}
#ifdef ACPI_EXEC_APP
if (flags & ACPI_NS_EARLY_INIT) {
this_node->flags |= ANOBJ_NODE_EARLY_INIT;
}
#endif
*return_node = this_node;
return_ACPI_STATUS(AE_OK);
}
| linux-master | drivers/acpi/acpica/nsaccess.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: nsparse - namespace interface to AML parser
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acparser.h"
#include "acdispat.h"
#include "actables.h"
#include "acinterp.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsparse")
/*******************************************************************************
*
* FUNCTION: ns_execute_table
*
* PARAMETERS: table_desc - An ACPI table descriptor for table to parse
* start_node - Where to enter the table into the namespace
*
* RETURN: Status
*
* DESCRIPTION: Load ACPI/AML table by executing the entire table as a single
* large control method.
*
* NOTE: The point of this is to execute any module-level code in-place
* as the table is parsed. Some AML code depends on this behavior.
*
* It is a run-time option at this time, but will eventually become
* the default.
*
* Note: This causes the table to only have a single-pass parse.
* However, this is compatible with other ACPI implementations.
*
******************************************************************************/
acpi_status
acpi_ns_execute_table(u32 table_index, struct acpi_namespace_node *start_node)
{
acpi_status status;
struct acpi_table_header *table;
acpi_owner_id owner_id;
struct acpi_evaluate_info *info = NULL;
u32 aml_length;
u8 *aml_start;
union acpi_operand_object *method_obj = NULL;
ACPI_FUNCTION_TRACE(ns_execute_table);
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Table must consist of at least a complete header */
if (table->length < sizeof(struct acpi_table_header)) {
return_ACPI_STATUS(AE_BAD_HEADER);
}
aml_start = (u8 *)table + sizeof(struct acpi_table_header);
aml_length = table->length - sizeof(struct acpi_table_header);
status = acpi_tb_get_owner_id(table_index, &owner_id);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Create, initialize, and link a new temporary method object */
method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
if (!method_obj) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Allocate the evaluation information block */
info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
if (!info) {
status = AE_NO_MEMORY;
goto cleanup;
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_PARSE,
"%s: Create table pseudo-method for [%4.4s] @%p, method %p\n",
ACPI_GET_FUNCTION_NAME, table->signature, table,
method_obj));
method_obj->method.aml_start = aml_start;
method_obj->method.aml_length = aml_length;
method_obj->method.owner_id = owner_id;
method_obj->method.info_flags |= ACPI_METHOD_MODULE_LEVEL;
info->pass_number = ACPI_IMODE_EXECUTE;
info->node = start_node;
info->obj_desc = method_obj;
info->node_flags = info->node->flags;
info->full_pathname = acpi_ns_get_normalized_pathname(info->node, TRUE);
if (!info->full_pathname) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Optional object evaluation log */
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EVALUATION,
"%-26s: (Definition Block level)\n",
"Module-level evaluation"));
status = acpi_ps_execute_table(info);
/* Optional object evaluation log */
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EVALUATION,
"%-26s: (Definition Block level)\n",
"Module-level complete"));
cleanup:
if (info) {
ACPI_FREE(info->full_pathname);
info->full_pathname = NULL;
}
ACPI_FREE(info);
acpi_ut_remove_reference(method_obj);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: ns_one_complete_parse
*
* PARAMETERS: pass_number - 1 or 2
* table_desc - The table to be parsed.
*
* RETURN: Status
*
* DESCRIPTION: Perform one complete parse of an ACPI/AML table.
*
******************************************************************************/
acpi_status
acpi_ns_one_complete_parse(u32 pass_number,
u32 table_index,
struct acpi_namespace_node *start_node)
{
union acpi_parse_object *parse_root;
acpi_status status;
u32 aml_length;
u8 *aml_start;
struct acpi_walk_state *walk_state;
struct acpi_table_header *table;
acpi_owner_id owner_id;
ACPI_FUNCTION_TRACE(ns_one_complete_parse);
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Table must consist of at least a complete header */
if (table->length < sizeof(struct acpi_table_header)) {
return_ACPI_STATUS(AE_BAD_HEADER);
}
aml_start = (u8 *)table + sizeof(struct acpi_table_header);
aml_length = table->length - sizeof(struct acpi_table_header);
status = acpi_tb_get_owner_id(table_index, &owner_id);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Create and init a Root Node */
parse_root = acpi_ps_create_scope_op(aml_start);
if (!parse_root) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Create and initialize a new walk state */
walk_state = acpi_ds_create_walk_state(owner_id, NULL, NULL, NULL);
if (!walk_state) {
acpi_ps_free_op(parse_root);
return_ACPI_STATUS(AE_NO_MEMORY);
}
status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
aml_start, aml_length, NULL,
(u8)pass_number);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
goto cleanup;
}
/* Found OSDT table, enable the namespace override feature */
if (ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_OSDT) &&
pass_number == ACPI_IMODE_LOAD_PASS1) {
walk_state->namespace_override = TRUE;
}
/* start_node is the default location to load the table */
if (start_node && start_node != acpi_gbl_root_node) {
status =
acpi_ds_scope_stack_push(start_node, ACPI_TYPE_METHOD,
walk_state);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
goto cleanup;
}
}
/* Parse the AML */
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"*PARSE* pass %u parse\n", pass_number));
acpi_ex_enter_interpreter();
status = acpi_ps_parse_aml(walk_state);
acpi_ex_exit_interpreter();
cleanup:
acpi_ps_delete_parse_tree(parse_root);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_parse_table
*
* PARAMETERS: table_desc - An ACPI table descriptor for table to parse
* start_node - Where to enter the table into the namespace
*
* RETURN: Status
*
* DESCRIPTION: Parse AML within an ACPI table and return a tree of ops
*
******************************************************************************/
acpi_status
acpi_ns_parse_table(u32 table_index, struct acpi_namespace_node *start_node)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ns_parse_table);
/*
* Executes the AML table as one large control method.
* The point of this is to execute any module-level code in-place
* as the table is parsed. Some AML code depends on this behavior.
*
* Note: This causes the table to only have a single-pass parse.
* However, this is compatible with other ACPI implementations.
*/
ACPI_DEBUG_PRINT_RAW((ACPI_DB_PARSE,
"%s: **** Start table execution pass\n",
ACPI_GET_FUNCTION_NAME));
status = acpi_ns_execute_table(table_index, start_node);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/nsparse.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: dbstats - Generation and display of ACPI table statistics
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdebug.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_CA_DEBUGGER
ACPI_MODULE_NAME("dbstats")
/* Local prototypes */
static void acpi_db_count_namespace_objects(void);
static void acpi_db_enumerate_object(union acpi_operand_object *obj_desc);
static acpi_status
acpi_db_classify_one_object(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value);
#if defined ACPI_DBG_TRACK_ALLOCATIONS || defined ACPI_USE_LOCAL_CACHE
static void acpi_db_list_info(struct acpi_memory_list *list);
#endif
/*
* Statistics subcommands
*/
static struct acpi_db_argument_info acpi_db_stat_types[] = {
{"ALLOCATIONS"},
{"OBJECTS"},
{"MEMORY"},
{"MISC"},
{"TABLES"},
{"SIZES"},
{"STACK"},
{NULL} /* Must be null terminated */
};
#define CMD_STAT_ALLOCATIONS 0
#define CMD_STAT_OBJECTS 1
#define CMD_STAT_MEMORY 2
#define CMD_STAT_MISC 3
#define CMD_STAT_TABLES 4
#define CMD_STAT_SIZES 5
#define CMD_STAT_STACK 6
#if defined ACPI_DBG_TRACK_ALLOCATIONS || defined ACPI_USE_LOCAL_CACHE
/*******************************************************************************
*
* FUNCTION: acpi_db_list_info
*
* PARAMETERS: list - Memory list/cache to be displayed
*
* RETURN: None
*
* DESCRIPTION: Display information about the input memory list or cache.
*
******************************************************************************/
static void acpi_db_list_info(struct acpi_memory_list *list)
{
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
u32 outstanding;
#endif
acpi_os_printf("\n%s\n", list->list_name);
/* max_depth > 0 indicates a cache object */
if (list->max_depth > 0) {
acpi_os_printf
(" Cache: [Depth MaxD Avail Size] "
"%8.2X %8.2X %8.2X %8.2X\n", list->current_depth,
list->max_depth, list->max_depth - list->current_depth,
(list->current_depth * list->object_size));
}
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
if (list->max_depth > 0) {
acpi_os_printf
(" Cache: [Requests Hits Misses ObjSize] "
"%8.2X %8.2X %8.2X %8.2X\n", list->requests, list->hits,
list->requests - list->hits, list->object_size);
}
outstanding = acpi_db_get_cache_info(list);
if (list->object_size) {
acpi_os_printf
(" Mem: [Alloc Free Max CurSize Outstanding] "
"%8.2X %8.2X %8.2X %8.2X %8.2X\n", list->total_allocated,
list->total_freed, list->max_occupied,
outstanding * list->object_size, outstanding);
} else {
acpi_os_printf
(" Mem: [Alloc Free Max CurSize Outstanding Total] "
"%8.2X %8.2X %8.2X %8.2X %8.2X %8.2X\n",
list->total_allocated, list->total_freed,
list->max_occupied, list->current_total_size, outstanding,
list->total_size);
}
#endif
}
#endif
/*******************************************************************************
*
* FUNCTION: acpi_db_enumerate_object
*
* PARAMETERS: obj_desc - Object to be counted
*
* RETURN: None
*
* DESCRIPTION: Add this object to the global counts, by object type.
* Limited recursion handles subobjects and packages, and this
* is probably acceptable within the AML debugger only.
*
******************************************************************************/
static void acpi_db_enumerate_object(union acpi_operand_object *obj_desc)
{
u32 i;
if (!obj_desc) {
return;
}
/* Enumerate this object first */
acpi_gbl_num_objects++;
if (obj_desc->common.type > ACPI_TYPE_NS_NODE_MAX) {
acpi_gbl_obj_type_count_misc++;
} else {
acpi_gbl_obj_type_count[obj_desc->common.type]++;
}
/* Count the sub-objects */
switch (obj_desc->common.type) {
case ACPI_TYPE_PACKAGE:
for (i = 0; i < obj_desc->package.count; i++) {
acpi_db_enumerate_object(obj_desc->package.elements[i]);
}
break;
case ACPI_TYPE_DEVICE:
acpi_db_enumerate_object(obj_desc->device.notify_list[0]);
acpi_db_enumerate_object(obj_desc->device.notify_list[1]);
acpi_db_enumerate_object(obj_desc->device.handler);
break;
case ACPI_TYPE_BUFFER_FIELD:
if (acpi_ns_get_secondary_object(obj_desc)) {
acpi_gbl_obj_type_count[ACPI_TYPE_BUFFER_FIELD]++;
}
break;
case ACPI_TYPE_REGION:
acpi_gbl_obj_type_count[ACPI_TYPE_LOCAL_REGION_FIELD]++;
acpi_db_enumerate_object(obj_desc->region.handler);
break;
case ACPI_TYPE_POWER:
acpi_db_enumerate_object(obj_desc->power_resource.
notify_list[0]);
acpi_db_enumerate_object(obj_desc->power_resource.
notify_list[1]);
break;
case ACPI_TYPE_PROCESSOR:
acpi_db_enumerate_object(obj_desc->processor.notify_list[0]);
acpi_db_enumerate_object(obj_desc->processor.notify_list[1]);
acpi_db_enumerate_object(obj_desc->processor.handler);
break;
case ACPI_TYPE_THERMAL:
acpi_db_enumerate_object(obj_desc->thermal_zone.notify_list[0]);
acpi_db_enumerate_object(obj_desc->thermal_zone.notify_list[1]);
acpi_db_enumerate_object(obj_desc->thermal_zone.handler);
break;
default:
break;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_classify_one_object
*
* PARAMETERS: Callback for walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Enumerate both the object descriptor (including subobjects) and
* the parent namespace node.
*
******************************************************************************/
static acpi_status
acpi_db_classify_one_object(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value)
{
struct acpi_namespace_node *node;
union acpi_operand_object *obj_desc;
u32 type;
acpi_gbl_num_nodes++;
node = (struct acpi_namespace_node *)obj_handle;
obj_desc = acpi_ns_get_attached_object(node);
acpi_db_enumerate_object(obj_desc);
type = node->type;
if (type > ACPI_TYPE_NS_NODE_MAX) {
acpi_gbl_node_type_count_misc++;
} else {
acpi_gbl_node_type_count[type]++;
}
return (AE_OK);
#ifdef ACPI_FUTURE_IMPLEMENTATION
/* TBD: These need to be counted during the initial parsing phase */
if (acpi_ps_is_named_op(op->opcode)) {
num_nodes++;
}
if (is_method) {
num_method_elements++;
}
num_grammar_elements++;
op = acpi_ps_get_depth_next(root, op);
size_of_parse_tree = (num_grammar_elements - num_method_elements) *
(u32)sizeof(union acpi_parse_object);
size_of_method_trees =
num_method_elements * (u32)sizeof(union acpi_parse_object);
size_of_node_entries =
num_nodes * (u32)sizeof(struct acpi_namespace_node);
size_of_acpi_objects =
num_nodes * (u32)sizeof(union acpi_operand_object);
#endif
}
/*******************************************************************************
*
* FUNCTION: acpi_db_count_namespace_objects
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Count and classify the entire namespace, including all
* namespace nodes and attached objects.
*
******************************************************************************/
static void acpi_db_count_namespace_objects(void)
{
u32 i;
acpi_gbl_num_nodes = 0;
acpi_gbl_num_objects = 0;
acpi_gbl_obj_type_count_misc = 0;
for (i = 0; i < (ACPI_TYPE_NS_NODE_MAX - 1); i++) {
acpi_gbl_obj_type_count[i] = 0;
acpi_gbl_node_type_count[i] = 0;
}
(void)acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, FALSE,
acpi_db_classify_one_object, NULL, NULL,
NULL);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_display_statistics
*
* PARAMETERS: type_arg - Subcommand
*
* RETURN: Status
*
* DESCRIPTION: Display various statistics
*
******************************************************************************/
acpi_status acpi_db_display_statistics(char *type_arg)
{
u32 i;
u32 temp;
acpi_ut_strupr(type_arg);
temp = acpi_db_match_argument(type_arg, acpi_db_stat_types);
if (temp == ACPI_TYPE_NOT_FOUND) {
acpi_os_printf("Invalid or unsupported argument\n");
return (AE_OK);
}
switch (temp) {
case CMD_STAT_ALLOCATIONS:
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
acpi_ut_dump_allocation_info();
#endif
break;
case CMD_STAT_TABLES:
acpi_os_printf("ACPI Table Information (not implemented):\n\n");
break;
case CMD_STAT_OBJECTS:
acpi_db_count_namespace_objects();
acpi_os_printf
("\nObjects defined in the current namespace:\n\n");
acpi_os_printf("%16.16s %10.10s %10.10s\n",
"ACPI_TYPE", "NODES", "OBJECTS");
for (i = 0; i < ACPI_TYPE_NS_NODE_MAX; i++) {
acpi_os_printf("%16.16s %10u %10u\n",
acpi_ut_get_type_name(i),
acpi_gbl_node_type_count[i],
acpi_gbl_obj_type_count[i]);
}
acpi_os_printf("%16.16s %10u %10u\n", "Misc/Unknown",
acpi_gbl_node_type_count_misc,
acpi_gbl_obj_type_count_misc);
acpi_os_printf("%16.16s %10u %10u\n", "TOTALS:",
acpi_gbl_num_nodes, acpi_gbl_num_objects);
break;
case CMD_STAT_MEMORY:
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
acpi_os_printf
("\n----Object Statistics (all in hex)---------\n");
acpi_db_list_info(acpi_gbl_global_list);
acpi_db_list_info(acpi_gbl_ns_node_list);
#endif
#ifdef ACPI_USE_LOCAL_CACHE
acpi_os_printf
("\n----Cache Statistics (all in hex)---------\n");
acpi_db_list_info(acpi_gbl_operand_cache);
acpi_db_list_info(acpi_gbl_ps_node_cache);
acpi_db_list_info(acpi_gbl_ps_node_ext_cache);
acpi_db_list_info(acpi_gbl_state_cache);
#endif
break;
case CMD_STAT_MISC:
acpi_os_printf("\nMiscellaneous Statistics:\n\n");
acpi_os_printf("%-28s: %7u\n", "Calls to AcpiPsFind",
acpi_gbl_ps_find_count);
acpi_os_printf("%-28s: %7u\n", "Calls to AcpiNsLookup",
acpi_gbl_ns_lookup_count);
acpi_os_printf("\nMutex usage:\n\n");
for (i = 0; i < ACPI_NUM_MUTEX; i++) {
acpi_os_printf("%-28s: %7u\n",
acpi_ut_get_mutex_name(i),
acpi_gbl_mutex_info[i].use_count);
}
break;
case CMD_STAT_SIZES:
acpi_os_printf("\nInternal object sizes:\n\n");
acpi_os_printf("Common %3d\n",
(u32)sizeof(struct acpi_object_common));
acpi_os_printf("Number %3d\n",
(u32)sizeof(struct acpi_object_integer));
acpi_os_printf("String %3d\n",
(u32)sizeof(struct acpi_object_string));
acpi_os_printf("Buffer %3d\n",
(u32)sizeof(struct acpi_object_buffer));
acpi_os_printf("Package %3d\n",
(u32)sizeof(struct acpi_object_package));
acpi_os_printf("BufferField %3d\n",
(u32)sizeof(struct acpi_object_buffer_field));
acpi_os_printf("Device %3d\n",
(u32)sizeof(struct acpi_object_device));
acpi_os_printf("Event %3d\n",
(u32)sizeof(struct acpi_object_event));
acpi_os_printf("Method %3d\n",
(u32)sizeof(struct acpi_object_method));
acpi_os_printf("Mutex %3d\n",
(u32)sizeof(struct acpi_object_mutex));
acpi_os_printf("Region %3d\n",
(u32)sizeof(struct acpi_object_region));
acpi_os_printf("PowerResource %3d\n",
(u32)sizeof(struct acpi_object_power_resource));
acpi_os_printf("Processor %3d\n",
(u32)sizeof(struct acpi_object_processor));
acpi_os_printf("ThermalZone %3d\n",
(u32)sizeof(struct acpi_object_thermal_zone));
acpi_os_printf("RegionField %3d\n",
(u32)sizeof(struct acpi_object_region_field));
acpi_os_printf("BankField %3d\n",
(u32)sizeof(struct acpi_object_bank_field));
acpi_os_printf("IndexField %3d\n",
(u32)sizeof(struct acpi_object_index_field));
acpi_os_printf("Reference %3d\n",
(u32)sizeof(struct acpi_object_reference));
acpi_os_printf("Notify %3d\n",
(u32)sizeof(struct acpi_object_notify_handler));
acpi_os_printf("AddressSpace %3d\n",
(u32)sizeof(struct acpi_object_addr_handler));
acpi_os_printf("Extra %3d\n",
(u32)sizeof(struct acpi_object_extra));
acpi_os_printf("Data %3d\n",
(u32)sizeof(struct acpi_object_data));
acpi_os_printf("\n");
acpi_os_printf("ParseObject %3d\n",
(u32)sizeof(struct acpi_parse_obj_common));
acpi_os_printf("ParseObjectNamed %3d\n",
(u32)sizeof(struct acpi_parse_obj_named));
acpi_os_printf("ParseObjectAsl %3d\n",
(u32)sizeof(struct acpi_parse_obj_asl));
acpi_os_printf("OperandObject %3d\n",
(u32)sizeof(union acpi_operand_object));
acpi_os_printf("NamespaceNode %3d\n",
(u32)sizeof(struct acpi_namespace_node));
acpi_os_printf("AcpiObject %3d\n",
(u32)sizeof(union acpi_object));
acpi_os_printf("\n");
acpi_os_printf("Generic State %3d\n",
(u32)sizeof(union acpi_generic_state));
acpi_os_printf("Common State %3d\n",
(u32)sizeof(struct acpi_common_state));
acpi_os_printf("Control State %3d\n",
(u32)sizeof(struct acpi_control_state));
acpi_os_printf("Update State %3d\n",
(u32)sizeof(struct acpi_update_state));
acpi_os_printf("Scope State %3d\n",
(u32)sizeof(struct acpi_scope_state));
acpi_os_printf("Parse Scope %3d\n",
(u32)sizeof(struct acpi_pscope_state));
acpi_os_printf("Package State %3d\n",
(u32)sizeof(struct acpi_pkg_state));
acpi_os_printf("Thread State %3d\n",
(u32)sizeof(struct acpi_thread_state));
acpi_os_printf("Result Values %3d\n",
(u32)sizeof(struct acpi_result_values));
acpi_os_printf("Notify Info %3d\n",
(u32)sizeof(struct acpi_notify_info));
break;
case CMD_STAT_STACK:
#if defined(ACPI_DEBUG_OUTPUT)
temp =
(u32)ACPI_PTR_DIFF(acpi_gbl_entry_stack_pointer,
acpi_gbl_lowest_stack_pointer);
acpi_os_printf("\nSubsystem Stack Usage:\n\n");
acpi_os_printf("Entry Stack Pointer %p\n",
acpi_gbl_entry_stack_pointer);
acpi_os_printf("Lowest Stack Pointer %p\n",
acpi_gbl_lowest_stack_pointer);
acpi_os_printf("Stack Use %X (%u)\n", temp,
temp);
acpi_os_printf("Deepest Procedure Nesting %u\n",
acpi_gbl_deepest_nesting);
#endif
break;
default:
break;
}
acpi_os_printf("\n");
return (AE_OK);
}
| linux-master | drivers/acpi/acpica/dbstats.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: rsxface - Public interfaces to the resource manager
*
******************************************************************************/
#define EXPORT_ACPI_INTERFACES
#include <acpi/acpi.h>
#include "accommon.h"
#include "acresrc.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME("rsxface")
/* Local macros for 16,32-bit to 64-bit conversion */
#define ACPI_COPY_FIELD(out, in, field) ((out)->field = (in)->field)
#define ACPI_COPY_ADDRESS(out, in) \
ACPI_COPY_FIELD(out, in, resource_type); \
ACPI_COPY_FIELD(out, in, producer_consumer); \
ACPI_COPY_FIELD(out, in, decode); \
ACPI_COPY_FIELD(out, in, min_address_fixed); \
ACPI_COPY_FIELD(out, in, max_address_fixed); \
ACPI_COPY_FIELD(out, in, info); \
ACPI_COPY_FIELD(out, in, address.granularity); \
ACPI_COPY_FIELD(out, in, address.minimum); \
ACPI_COPY_FIELD(out, in, address.maximum); \
ACPI_COPY_FIELD(out, in, address.translation_offset); \
ACPI_COPY_FIELD(out, in, address.address_length); \
ACPI_COPY_FIELD(out, in, resource_source);
/* Local prototypes */
static acpi_status
acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context);
static acpi_status
acpi_rs_validate_parameters(acpi_handle device_handle,
struct acpi_buffer *buffer,
struct acpi_namespace_node **return_node);
/*******************************************************************************
*
* FUNCTION: acpi_rs_validate_parameters
*
* PARAMETERS: device_handle - Handle to a device
* buffer - Pointer to a data buffer
* return_node - Pointer to where the device node is returned
*
* RETURN: Status
*
* DESCRIPTION: Common parameter validation for resource interfaces
*
******************************************************************************/
static acpi_status
acpi_rs_validate_parameters(acpi_handle device_handle,
struct acpi_buffer *buffer,
struct acpi_namespace_node **return_node)
{
acpi_status status;
struct acpi_namespace_node *node;
ACPI_FUNCTION_TRACE(rs_validate_parameters);
/*
* Must have a valid handle to an ACPI device
*/
if (!device_handle) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
node = acpi_ns_validate_handle(device_handle);
if (!node) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
if (node->type != ACPI_TYPE_DEVICE) {
return_ACPI_STATUS(AE_TYPE);
}
/*
* Validate the user buffer object
*
* if there is a non-zero buffer length we also need a valid pointer in
* the buffer. If it's a zero buffer length, we'll be returning the
* needed buffer size (later), so keep going.
*/
status = acpi_ut_validate_buffer(buffer);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
*return_node = node;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_get_irq_routing_table
*
* PARAMETERS: device_handle - Handle to the Bus device we are querying
* ret_buffer - Pointer to a buffer to receive the
* current resources for the device
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the IRQ routing table for a
* specific bus. The caller must first acquire a handle for the
* desired bus. The routine table is placed in the buffer pointed
* to by the ret_buffer variable parameter.
*
* If the function fails an appropriate status will be returned
* and the value of ret_buffer is undefined.
*
* This function attempts to execute the _PRT method contained in
* the object indicated by the passed device_handle.
*
******************************************************************************/
acpi_status
acpi_get_irq_routing_table(acpi_handle device_handle,
struct acpi_buffer *ret_buffer)
{
acpi_status status;
struct acpi_namespace_node *node;
ACPI_FUNCTION_TRACE(acpi_get_irq_routing_table);
/* Validate parameters then dispatch to internal routine */
status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_rs_get_prt_method_data(node, ret_buffer);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_get_irq_routing_table)
/*******************************************************************************
*
* FUNCTION: acpi_get_current_resources
*
* PARAMETERS: device_handle - Handle to the device object for the
* device we are querying
* ret_buffer - Pointer to a buffer to receive the
* current resources for the device
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the current resources for a
* specific device. The caller must first acquire a handle for
* the desired device. The resource data is placed in the buffer
* pointed to by the ret_buffer variable parameter.
*
* If the function fails an appropriate status will be returned
* and the value of ret_buffer is undefined.
*
* This function attempts to execute the _CRS method contained in
* the object indicated by the passed device_handle.
*
******************************************************************************/
acpi_status
acpi_get_current_resources(acpi_handle device_handle,
struct acpi_buffer *ret_buffer)
{
acpi_status status;
struct acpi_namespace_node *node;
ACPI_FUNCTION_TRACE(acpi_get_current_resources);
/* Validate parameters then dispatch to internal routine */
status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_rs_get_crs_method_data(node, ret_buffer);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_get_current_resources)
/*******************************************************************************
*
* FUNCTION: acpi_get_possible_resources
*
* PARAMETERS: device_handle - Handle to the device object for the
* device we are querying
* ret_buffer - Pointer to a buffer to receive the
* resources for the device
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get a list of the possible resources
* for a specific device. The caller must first acquire a handle
* for the desired device. The resource data is placed in the
* buffer pointed to by the ret_buffer variable.
*
* If the function fails an appropriate status will be returned
* and the value of ret_buffer is undefined.
*
******************************************************************************/
acpi_status
acpi_get_possible_resources(acpi_handle device_handle,
struct acpi_buffer *ret_buffer)
{
acpi_status status;
struct acpi_namespace_node *node;
ACPI_FUNCTION_TRACE(acpi_get_possible_resources);
/* Validate parameters then dispatch to internal routine */
status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_rs_get_prs_method_data(node, ret_buffer);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_get_possible_resources)
/*******************************************************************************
*
* FUNCTION: acpi_set_current_resources
*
* PARAMETERS: device_handle - Handle to the device object for the
* device we are setting resources
* in_buffer - Pointer to a buffer containing the
* resources to be set for the device
*
* RETURN: Status
*
* DESCRIPTION: This function is called to set the current resources for a
* specific device. The caller must first acquire a handle for
* the desired device. The resource data is passed to the routine
* the buffer pointed to by the in_buffer variable.
*
******************************************************************************/
acpi_status
acpi_set_current_resources(acpi_handle device_handle,
struct acpi_buffer *in_buffer)
{
acpi_status status;
struct acpi_namespace_node *node;
ACPI_FUNCTION_TRACE(acpi_set_current_resources);
/* Validate the buffer, don't allow zero length */
if ((!in_buffer) || (!in_buffer->pointer) || (!in_buffer->length)) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Validate parameters then dispatch to internal routine */
status = acpi_rs_validate_parameters(device_handle, in_buffer, &node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_rs_set_srs_method_data(node, in_buffer);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_set_current_resources)
/*******************************************************************************
*
* FUNCTION: acpi_get_event_resources
*
* PARAMETERS: device_handle - Handle to the device object for the
* device we are getting resources
* in_buffer - Pointer to a buffer containing the
* resources to be set for the device
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the event resources for a
* specific device. The caller must first acquire a handle for
* the desired device. The resource data is passed to the routine
* the buffer pointed to by the in_buffer variable. Uses the
* _AEI method.
*
******************************************************************************/
acpi_status
acpi_get_event_resources(acpi_handle device_handle,
struct acpi_buffer *ret_buffer)
{
acpi_status status;
struct acpi_namespace_node *node;
ACPI_FUNCTION_TRACE(acpi_get_event_resources);
/* Validate parameters then dispatch to internal routine */
status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_rs_get_aei_method_data(node, ret_buffer);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_get_event_resources)
/******************************************************************************
*
* FUNCTION: acpi_resource_to_address64
*
* PARAMETERS: resource - Pointer to a resource
* out - Pointer to the users's return buffer
* (a struct acpi_resource_address64)
*
* RETURN: Status
*
* DESCRIPTION: If the resource is an address16, address32, or address64,
* copy it to the address64 return buffer. This saves the
* caller from having to duplicate code for different-sized
* addresses.
*
******************************************************************************/
acpi_status
acpi_resource_to_address64(struct acpi_resource *resource,
struct acpi_resource_address64 *out)
{
struct acpi_resource_address16 *address16;
struct acpi_resource_address32 *address32;
if (!resource || !out) {
return (AE_BAD_PARAMETER);
}
/* Convert 16 or 32 address descriptor to 64 */
switch (resource->type) {
case ACPI_RESOURCE_TYPE_ADDRESS16:
address16 =
ACPI_CAST_PTR(struct acpi_resource_address16,
&resource->data);
ACPI_COPY_ADDRESS(out, address16);
break;
case ACPI_RESOURCE_TYPE_ADDRESS32:
address32 =
ACPI_CAST_PTR(struct acpi_resource_address32,
&resource->data);
ACPI_COPY_ADDRESS(out, address32);
break;
case ACPI_RESOURCE_TYPE_ADDRESS64:
/* Simple copy for 64 bit source */
memcpy(out, &resource->data,
sizeof(struct acpi_resource_address64));
break;
default:
return (AE_BAD_PARAMETER);
}
return (AE_OK);
}
ACPI_EXPORT_SYMBOL(acpi_resource_to_address64)
/*******************************************************************************
*
* FUNCTION: acpi_get_vendor_resource
*
* PARAMETERS: device_handle - Handle for the parent device object
* name - Method name for the parent resource
* (METHOD_NAME__CRS or METHOD_NAME__PRS)
* uuid - Pointer to the UUID to be matched.
* includes both subtype and 16-byte UUID
* ret_buffer - Where the vendor resource is returned
*
* RETURN: Status
*
* DESCRIPTION: Walk a resource template for the specified device to find a
* vendor-defined resource that matches the supplied UUID and
* UUID subtype. Returns a struct acpi_resource of type Vendor.
*
******************************************************************************/
acpi_status
acpi_get_vendor_resource(acpi_handle device_handle,
char *name,
struct acpi_vendor_uuid *uuid,
struct acpi_buffer *ret_buffer)
{
struct acpi_vendor_walk_info info;
acpi_status status;
/* Other parameters are validated by acpi_walk_resources */
if (!uuid || !ret_buffer) {
return (AE_BAD_PARAMETER);
}
info.uuid = uuid;
info.buffer = ret_buffer;
info.status = AE_NOT_EXIST;
/* Walk the _CRS or _PRS resource list for this device */
status =
acpi_walk_resources(device_handle, name,
acpi_rs_match_vendor_resource, &info);
if (ACPI_FAILURE(status)) {
return (status);
}
return (info.status);
}
ACPI_EXPORT_SYMBOL(acpi_get_vendor_resource)
/*******************************************************************************
*
* FUNCTION: acpi_rs_match_vendor_resource
*
* PARAMETERS: acpi_walk_resource_callback
*
* RETURN: Status
*
* DESCRIPTION: Match a vendor resource via the ACPI 3.0 UUID
*
******************************************************************************/
static acpi_status
acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context)
{
struct acpi_vendor_walk_info *info = context;
struct acpi_resource_vendor_typed *vendor;
struct acpi_buffer *buffer;
acpi_status status;
/* Ignore all descriptors except Vendor */
if (resource->type != ACPI_RESOURCE_TYPE_VENDOR) {
return (AE_OK);
}
vendor = &resource->data.vendor_typed;
/*
* For a valid match, these conditions must hold:
*
* 1) Length of descriptor data must be at least as long as a UUID struct
* 2) The UUID subtypes must match
* 3) The UUID data must match
*/
if ((vendor->byte_length < (ACPI_UUID_LENGTH + 1)) ||
(vendor->uuid_subtype != info->uuid->subtype) ||
(memcmp(vendor->uuid, info->uuid->data, ACPI_UUID_LENGTH))) {
return (AE_OK);
}
/* Validate/Allocate/Clear caller buffer */
buffer = info->buffer;
status = acpi_ut_initialize_buffer(buffer, resource->length);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Found the correct resource, copy and return it */
memcpy(buffer->pointer, resource, resource->length);
buffer->length = resource->length;
/* Found the desired descriptor, terminate resource walk */
info->status = AE_OK;
return (AE_CTRL_TERMINATE);
}
/*******************************************************************************
*
* FUNCTION: acpi_walk_resource_buffer
*
* PARAMETERS: buffer - Formatted buffer returned by one of the
* various Get*Resource functions
* user_function - Called for each resource
* context - Passed to user_function
*
* RETURN: Status
*
* DESCRIPTION: Walks the input resource template. The user_function is called
* once for each resource in the list.
*
******************************************************************************/
acpi_status
acpi_walk_resource_buffer(struct acpi_buffer *buffer,
acpi_walk_resource_callback user_function,
void *context)
{
acpi_status status = AE_OK;
struct acpi_resource *resource;
struct acpi_resource *resource_end;
ACPI_FUNCTION_TRACE(acpi_walk_resource_buffer);
/* Parameter validation */
if (!buffer || !buffer->pointer || !user_function) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Buffer contains the resource list and length */
resource = ACPI_CAST_PTR(struct acpi_resource, buffer->pointer);
resource_end =
ACPI_ADD_PTR(struct acpi_resource, buffer->pointer, buffer->length);
/* Walk the resource list until the end_tag is found (or buffer end) */
while (resource < resource_end) {
/* Sanity check the resource type */
if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
status = AE_AML_INVALID_RESOURCE_TYPE;
break;
}
/* Sanity check the length. It must not be zero, or we loop forever */
if (!resource->length) {
return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
}
/* Invoke the user function, abort on any error returned */
status = user_function(resource, context);
if (ACPI_FAILURE(status)) {
if (status == AE_CTRL_TERMINATE) {
/* This is an OK termination by the user function */
status = AE_OK;
}
break;
}
/* end_tag indicates end-of-list */
if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) {
break;
}
/* Get the next resource descriptor */
resource = ACPI_NEXT_RESOURCE(resource);
}
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_walk_resource_buffer)
/*******************************************************************************
*
* FUNCTION: acpi_walk_resources
*
* PARAMETERS: device_handle - Handle to the device object for the
* device we are querying
* name - Method name of the resources we want.
* (METHOD_NAME__CRS, METHOD_NAME__PRS, or
* METHOD_NAME__AEI or METHOD_NAME__DMA)
* user_function - Called for each resource
* context - Passed to user_function
*
* RETURN: Status
*
* DESCRIPTION: Retrieves the current or possible resource list for the
* specified device. The user_function is called once for
* each resource in the list.
*
******************************************************************************/
acpi_status
acpi_walk_resources(acpi_handle device_handle,
char *name,
acpi_walk_resource_callback user_function, void *context)
{
acpi_status status;
struct acpi_buffer buffer;
ACPI_FUNCTION_TRACE(acpi_walk_resources);
/* Parameter validation */
if (!device_handle || !user_function || !name ||
(!ACPI_COMPARE_NAMESEG(name, METHOD_NAME__CRS) &&
!ACPI_COMPARE_NAMESEG(name, METHOD_NAME__PRS) &&
!ACPI_COMPARE_NAMESEG(name, METHOD_NAME__AEI) &&
!ACPI_COMPARE_NAMESEG(name, METHOD_NAME__DMA))) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Get the _CRS/_PRS/_AEI/_DMA resource list */
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_rs_get_method_data(device_handle, name, &buffer);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Walk the resource list and cleanup */
status = acpi_walk_resource_buffer(&buffer, user_function, context);
ACPI_FREE(buffer.pointer);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_walk_resources)
| linux-master | drivers/acpi/acpica/rsxface.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: evgpe - General Purpose Event handling and dispatch
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acevents.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evgpe")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/* Local prototypes */
static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context);
static void ACPI_SYSTEM_XFACE acpi_ev_asynch_enable_gpe(void *context);
/*******************************************************************************
*
* FUNCTION: acpi_ev_update_gpe_enable_mask
*
* PARAMETERS: gpe_event_info - GPE to update
*
* RETURN: Status
*
* DESCRIPTION: Updates GPE register enable mask based upon whether there are
* runtime references to this GPE
*
******************************************************************************/
acpi_status
acpi_ev_update_gpe_enable_mask(struct acpi_gpe_event_info *gpe_event_info)
{
struct acpi_gpe_register_info *gpe_register_info;
u32 register_bit;
ACPI_FUNCTION_TRACE(ev_update_gpe_enable_mask);
gpe_register_info = gpe_event_info->register_info;
if (!gpe_register_info) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
/* Clear the run bit up front */
ACPI_CLEAR_BIT(gpe_register_info->enable_for_run, register_bit);
/* Set the mask bit only if there are references to this GPE */
if (gpe_event_info->runtime_count) {
ACPI_SET_BIT(gpe_register_info->enable_for_run,
(u8)register_bit);
}
gpe_register_info->enable_mask = gpe_register_info->enable_for_run;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_enable_gpe
*
* PARAMETERS: gpe_event_info - GPE to enable
*
* RETURN: Status
*
* DESCRIPTION: Enable a GPE.
*
******************************************************************************/
acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ev_enable_gpe);
/* Enable the requested GPE */
status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_ENABLE);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_mask_gpe
*
* PARAMETERS: gpe_event_info - GPE to be blocked/unblocked
* is_masked - Whether the GPE is masked or not
*
* RETURN: Status
*
* DESCRIPTION: Unconditionally mask/unmask a GPE during runtime.
*
******************************************************************************/
acpi_status
acpi_ev_mask_gpe(struct acpi_gpe_event_info *gpe_event_info, u8 is_masked)
{
struct acpi_gpe_register_info *gpe_register_info;
u32 register_bit;
ACPI_FUNCTION_TRACE(ev_mask_gpe);
gpe_register_info = gpe_event_info->register_info;
if (!gpe_register_info) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
/* Perform the action */
if (is_masked) {
if (register_bit & gpe_register_info->mask_for_run) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
(void)acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
ACPI_SET_BIT(gpe_register_info->mask_for_run, (u8)register_bit);
} else {
if (!(register_bit & gpe_register_info->mask_for_run)) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
ACPI_CLEAR_BIT(gpe_register_info->mask_for_run,
(u8)register_bit);
if (gpe_event_info->runtime_count
&& !gpe_event_info->disable_for_dispatch) {
(void)acpi_hw_low_set_gpe(gpe_event_info,
ACPI_GPE_ENABLE);
}
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_add_gpe_reference
*
* PARAMETERS: gpe_event_info - Add a reference to this GPE
* clear_on_enable - Clear GPE status before enabling it
*
* RETURN: Status
*
* DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is
* hardware-enabled.
*
******************************************************************************/
acpi_status
acpi_ev_add_gpe_reference(struct acpi_gpe_event_info *gpe_event_info,
u8 clear_on_enable)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(ev_add_gpe_reference);
if (gpe_event_info->runtime_count == ACPI_UINT8_MAX) {
return_ACPI_STATUS(AE_LIMIT);
}
gpe_event_info->runtime_count++;
if (gpe_event_info->runtime_count == 1) {
/* Enable on first reference */
if (clear_on_enable) {
(void)acpi_hw_clear_gpe(gpe_event_info);
}
status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
if (ACPI_SUCCESS(status)) {
status = acpi_ev_enable_gpe(gpe_event_info);
}
if (ACPI_FAILURE(status)) {
gpe_event_info->runtime_count--;
}
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_remove_gpe_reference
*
* PARAMETERS: gpe_event_info - Remove a reference to this GPE
*
* RETURN: Status
*
* DESCRIPTION: Remove a reference to a GPE. When the last reference is
* removed, the GPE is hardware-disabled.
*
******************************************************************************/
acpi_status
acpi_ev_remove_gpe_reference(struct acpi_gpe_event_info *gpe_event_info)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(ev_remove_gpe_reference);
if (!gpe_event_info->runtime_count) {
return_ACPI_STATUS(AE_LIMIT);
}
gpe_event_info->runtime_count--;
if (!gpe_event_info->runtime_count) {
/* Disable on last reference */
status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
if (ACPI_SUCCESS(status)) {
status =
acpi_hw_low_set_gpe(gpe_event_info,
ACPI_GPE_DISABLE);
}
if (ACPI_FAILURE(status)) {
gpe_event_info->runtime_count++;
}
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_low_get_gpe_info
*
* PARAMETERS: gpe_number - Raw GPE number
* gpe_block - A GPE info block
*
* RETURN: A GPE event_info struct. NULL if not a valid GPE (The gpe_number
* is not within the specified GPE block)
*
* DESCRIPTION: Returns the event_info struct associated with this GPE. This is
* the low-level implementation of ev_get_gpe_event_info.
*
******************************************************************************/
struct acpi_gpe_event_info *acpi_ev_low_get_gpe_info(u32 gpe_number,
struct acpi_gpe_block_info
*gpe_block)
{
u32 gpe_index;
/*
* Validate that the gpe_number is within the specified gpe_block.
* (Two steps)
*/
if (!gpe_block || (gpe_number < gpe_block->block_base_number)) {
return (NULL);
}
gpe_index = gpe_number - gpe_block->block_base_number;
if (gpe_index >= gpe_block->gpe_count) {
return (NULL);
}
return (&gpe_block->event_info[gpe_index]);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_get_gpe_event_info
*
* PARAMETERS: gpe_device - Device node. NULL for GPE0/GPE1
* gpe_number - Raw GPE number
*
* RETURN: A GPE event_info struct. NULL if not a valid GPE
*
* DESCRIPTION: Returns the event_info struct associated with this GPE.
* Validates the gpe_block and the gpe_number
*
* Should be called only when the GPE lists are semaphore locked
* and not subject to change.
*
******************************************************************************/
struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
u32 gpe_number)
{
union acpi_operand_object *obj_desc;
struct acpi_gpe_event_info *gpe_info;
u32 i;
ACPI_FUNCTION_ENTRY();
/* A NULL gpe_device means use the FADT-defined GPE block(s) */
if (!gpe_device) {
/* Examine GPE Block 0 and 1 (These blocks are permanent) */
for (i = 0; i < ACPI_MAX_GPE_BLOCKS; i++) {
gpe_info = acpi_ev_low_get_gpe_info(gpe_number,
acpi_gbl_gpe_fadt_blocks
[i]);
if (gpe_info) {
return (gpe_info);
}
}
/* The gpe_number was not in the range of either FADT GPE block */
return (NULL);
}
/* A Non-NULL gpe_device means this is a GPE Block Device */
obj_desc =
acpi_ns_get_attached_object((struct acpi_namespace_node *)
gpe_device);
if (!obj_desc || !obj_desc->device.gpe_block) {
return (NULL);
}
return (acpi_ev_low_get_gpe_info
(gpe_number, obj_desc->device.gpe_block));
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_gpe_detect
*
* PARAMETERS: gpe_xrupt_list - Interrupt block for this interrupt.
* Can have multiple GPE blocks attached.
*
* RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
*
* DESCRIPTION: Detect if any GP events have occurred. This function is
* executed at interrupt level.
*
******************************************************************************/
u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list)
{
struct acpi_gpe_block_info *gpe_block;
struct acpi_namespace_node *gpe_device;
struct acpi_gpe_register_info *gpe_register_info;
struct acpi_gpe_event_info *gpe_event_info;
u32 gpe_number;
u32 int_status = ACPI_INTERRUPT_NOT_HANDLED;
acpi_cpu_flags flags;
u32 i;
u32 j;
ACPI_FUNCTION_NAME(ev_gpe_detect);
/* Check for the case where there are no GPEs */
if (!gpe_xrupt_list) {
return (int_status);
}
/*
* We need to obtain the GPE lock for both the data structs and registers
* Note: Not necessary to obtain the hardware lock, since the GPE
* registers are owned by the gpe_lock.
*/
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
/* Examine all GPE blocks attached to this interrupt level */
gpe_block = gpe_xrupt_list->gpe_block_list_head;
while (gpe_block) {
gpe_device = gpe_block->node;
/*
* Read all of the 8-bit GPE status and enable registers in this GPE
* block, saving all of them. Find all currently active GP events.
*/
for (i = 0; i < gpe_block->register_count; i++) {
/* Get the next status/enable pair */
gpe_register_info = &gpe_block->register_info[i];
/*
* Optimization: If there are no GPEs enabled within this
* register, we can safely ignore the entire register.
*/
if (!(gpe_register_info->enable_for_run |
gpe_register_info->enable_for_wake)) {
ACPI_DEBUG_PRINT((ACPI_DB_INTERRUPTS,
"Ignore disabled registers for GPE %02X-%02X: "
"RunEnable=%02X, WakeEnable=%02X\n",
gpe_register_info->
base_gpe_number,
gpe_register_info->
base_gpe_number +
(ACPI_GPE_REGISTER_WIDTH - 1),
gpe_register_info->
enable_for_run,
gpe_register_info->
enable_for_wake));
continue;
}
/* Now look at the individual GPEs in this byte register */
for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) {
/* Detect and dispatch one GPE bit */
gpe_event_info =
&gpe_block->
event_info[((acpi_size)i *
ACPI_GPE_REGISTER_WIDTH) + j];
gpe_number =
j + gpe_register_info->base_gpe_number;
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
int_status |=
acpi_ev_detect_gpe(gpe_device,
gpe_event_info,
gpe_number);
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
}
}
gpe_block = gpe_block->next;
}
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
return (int_status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_asynch_execute_gpe_method
*
* PARAMETERS: Context (gpe_event_info) - Info for this GPE
*
* RETURN: None
*
* DESCRIPTION: Perform the actual execution of a GPE control method. This
* function is called from an invocation of acpi_os_execute and
* therefore does NOT execute at interrupt level - so that
* the control method itself is not executed in the context of
* an interrupt handler.
*
******************************************************************************/
static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
{
struct acpi_gpe_event_info *gpe_event_info = context;
acpi_status status = AE_OK;
struct acpi_evaluate_info *info;
struct acpi_gpe_notify_info *notify;
ACPI_FUNCTION_TRACE(ev_asynch_execute_gpe_method);
/* Do the correct dispatch - normal method or implicit notify */
switch (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags)) {
case ACPI_GPE_DISPATCH_NOTIFY:
/*
* Implicit notify.
* Dispatch a DEVICE_WAKE notify to the appropriate handler.
* NOTE: the request is queued for execution after this method
* completes. The notify handlers are NOT invoked synchronously
* from this thread -- because handlers may in turn run other
* control methods.
*
* June 2012: Expand implicit notify mechanism to support
* notifies on multiple device objects.
*/
notify = gpe_event_info->dispatch.notify_list;
while (ACPI_SUCCESS(status) && notify) {
status =
acpi_ev_queue_notify_request(notify->device_node,
ACPI_NOTIFY_DEVICE_WAKE);
notify = notify->next;
}
break;
case ACPI_GPE_DISPATCH_METHOD:
/* Allocate the evaluation information block */
info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
if (!info) {
status = AE_NO_MEMORY;
} else {
/*
* Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the
* _Lxx/_Exx control method that corresponds to this GPE
*/
info->prefix_node =
gpe_event_info->dispatch.method_node;
info->flags = ACPI_IGNORE_RETURN_VALUE;
status = acpi_ns_evaluate(info);
ACPI_FREE(info);
}
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"while evaluating GPE method [%4.4s]",
acpi_ut_get_node_name(gpe_event_info->
dispatch.
method_node)));
}
break;
default:
goto error_exit; /* Should never happen */
}
/* Defer enabling of GPE until all notify handlers are done */
status = acpi_os_execute(OSL_NOTIFY_HANDLER,
acpi_ev_asynch_enable_gpe, gpe_event_info);
if (ACPI_SUCCESS(status)) {
return_VOID;
}
error_exit:
acpi_ev_asynch_enable_gpe(gpe_event_info);
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_asynch_enable_gpe
*
* PARAMETERS: Context (gpe_event_info) - Info for this GPE
* Callback from acpi_os_execute
*
* RETURN: None
*
* DESCRIPTION: Asynchronous clear/enable for GPE. This allows the GPE to
* complete (i.e., finish execution of Notify)
*
******************************************************************************/
static void ACPI_SYSTEM_XFACE acpi_ev_asynch_enable_gpe(void *context)
{
struct acpi_gpe_event_info *gpe_event_info = context;
acpi_cpu_flags flags;
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
(void)acpi_ev_finish_gpe(gpe_event_info);
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
return;
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_finish_gpe
*
* PARAMETERS: gpe_event_info - Info for this GPE
*
* RETURN: Status
*
* DESCRIPTION: Clear/Enable a GPE. Common code that is used after execution
* of a GPE method or a synchronous or asynchronous GPE handler.
*
******************************************************************************/
acpi_status acpi_ev_finish_gpe(struct acpi_gpe_event_info *gpe_event_info)
{
acpi_status status;
if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
ACPI_GPE_LEVEL_TRIGGERED) {
/*
* GPE is level-triggered, we clear the GPE status bit after
* handling the event.
*/
status = acpi_hw_clear_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
return (status);
}
}
/*
* Enable this GPE, conditionally. This means that the GPE will
* only be physically enabled if the enable_mask bit is set
* in the event_info.
*/
(void)acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_CONDITIONAL_ENABLE);
gpe_event_info->disable_for_dispatch = FALSE;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_detect_gpe
*
* PARAMETERS: gpe_device - Device node. NULL for GPE0/GPE1
* gpe_event_info - Info for this GPE
* gpe_number - Number relative to the parent GPE block
*
* RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
*
* DESCRIPTION: Detect and dispatch a General Purpose Event to either a function
* (e.g. EC) or method (e.g. _Lxx/_Exx) handler.
* NOTE: GPE is W1C, so it is possible to handle a single GPE from both
* task and irq context in parallel as long as the process to
* detect and mask the GPE is atomic.
* However the atomicity of ACPI_GPE_DISPATCH_RAW_HANDLER is
* dependent on the raw handler itself.
*
******************************************************************************/
u32
acpi_ev_detect_gpe(struct acpi_namespace_node *gpe_device,
struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
{
u32 int_status = ACPI_INTERRUPT_NOT_HANDLED;
u8 enabled_status_byte;
u64 status_reg;
u64 enable_reg;
u32 register_bit;
struct acpi_gpe_register_info *gpe_register_info;
struct acpi_gpe_handler_info *gpe_handler_info;
acpi_cpu_flags flags;
acpi_status status;
ACPI_FUNCTION_TRACE(ev_gpe_detect);
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
if (!gpe_event_info) {
gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
if (!gpe_event_info)
goto error_exit;
}
/* Get the info block for the entire GPE register */
gpe_register_info = gpe_event_info->register_info;
/* Get the register bitmask for this GPE */
register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
/* GPE currently enabled (enable bit == 1)? */
status = acpi_hw_gpe_read(&enable_reg, &gpe_register_info->enable_address);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
/* GPE currently active (status bit == 1)? */
status = acpi_hw_gpe_read(&status_reg, &gpe_register_info->status_address);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
/* Check if there is anything active at all in this GPE */
ACPI_DEBUG_PRINT((ACPI_DB_INTERRUPTS,
"Read registers for GPE %02X: Status=%02X, Enable=%02X, "
"RunEnable=%02X, WakeEnable=%02X\n",
gpe_number,
(u32)(status_reg & register_bit),
(u32)(enable_reg & register_bit),
gpe_register_info->enable_for_run,
gpe_register_info->enable_for_wake));
enabled_status_byte = (u8)(status_reg & enable_reg);
if (!(enabled_status_byte & register_bit)) {
goto error_exit;
}
/* Invoke global event handler if present */
acpi_gpe_count++;
if (acpi_gbl_global_event_handler) {
acpi_gbl_global_event_handler(ACPI_EVENT_TYPE_GPE,
gpe_device, gpe_number,
acpi_gbl_global_event_handler_context);
}
/* Found an active GPE */
if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
ACPI_GPE_DISPATCH_RAW_HANDLER) {
/* Dispatch the event to a raw handler */
gpe_handler_info = gpe_event_info->dispatch.handler;
/*
* There is no protection around the namespace node
* and the GPE handler to ensure a safe destruction
* because:
* 1. The namespace node is expected to always
* exist after loading a table.
* 2. The GPE handler is expected to be flushed by
* acpi_os_wait_events_complete() before the
* destruction.
*/
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
int_status |=
gpe_handler_info->address(gpe_device, gpe_number,
gpe_handler_info->context);
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
} else {
/* Dispatch the event to a standard handler or method. */
int_status |= acpi_ev_gpe_dispatch(gpe_device,
gpe_event_info, gpe_number);
}
error_exit:
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
return (int_status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_gpe_dispatch
*
* PARAMETERS: gpe_device - Device node. NULL for GPE0/GPE1
* gpe_event_info - Info for this GPE
* gpe_number - Number relative to the parent GPE block
*
* RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
*
* DESCRIPTION: Dispatch a General Purpose Event to either a function (e.g. EC)
* or method (e.g. _Lxx/_Exx) handler.
*
******************************************************************************/
u32
acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
{
acpi_status status;
u32 return_value;
ACPI_FUNCTION_TRACE(ev_gpe_dispatch);
/*
* Always disable the GPE so that it does not keep firing before
* any asynchronous activity completes (either from the execution
* of a GPE method or an asynchronous GPE handler.)
*
* If there is no handler or method to run, just disable the
* GPE and leave it disabled permanently to prevent further such
* pointless events from firing.
*/
status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to disable GPE %02X", gpe_number));
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
/*
* If edge-triggered, clear the GPE status bit now. Note that
* level-triggered events are cleared after the GPE is serviced.
*/
if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
ACPI_GPE_EDGE_TRIGGERED) {
status = acpi_hw_clear_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to clear GPE %02X",
gpe_number));
(void)acpi_hw_low_set_gpe(gpe_event_info,
ACPI_GPE_CONDITIONAL_ENABLE);
return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
}
}
gpe_event_info->disable_for_dispatch = TRUE;
/*
* Dispatch the GPE to either an installed handler or the control
* method associated with this GPE (_Lxx or _Exx). If a handler
* exists, we invoke it and do not attempt to run the method.
* If there is neither a handler nor a method, leave the GPE
* disabled.
*/
switch (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags)) {
case ACPI_GPE_DISPATCH_HANDLER:
/* Invoke the installed handler (at interrupt level) */
return_value =
gpe_event_info->dispatch.handler->address(gpe_device,
gpe_number,
gpe_event_info->
dispatch.handler->
context);
/* If requested, clear (if level-triggered) and re-enable the GPE */
if (return_value & ACPI_REENABLE_GPE) {
(void)acpi_ev_finish_gpe(gpe_event_info);
}
break;
case ACPI_GPE_DISPATCH_METHOD:
case ACPI_GPE_DISPATCH_NOTIFY:
/*
* Execute the method associated with the GPE
* NOTE: Level-triggered GPEs are cleared after the method completes.
*/
status = acpi_os_execute(OSL_GPE_HANDLER,
acpi_ev_asynch_execute_gpe_method,
gpe_event_info);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Unable to queue handler for GPE %02X - event disabled",
gpe_number));
}
break;
default:
/*
* No handler or method to run!
* 03/2010: This case should no longer be possible. We will not allow
* a GPE to be enabled if it has no handler or method.
*/
ACPI_ERROR((AE_INFO,
"No handler or method for GPE %02X, disabling event",
gpe_number));
break;
}
return_UINT32(ACPI_INTERRUPT_HANDLED);
}
#endif /* !ACPI_REDUCED_HARDWARE */
| linux-master | drivers/acpi/acpica/evgpe.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: uterror - Various internal error/warning output functions
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("uterror")
/*
* This module contains internal error functions that may
* be configured out.
*/
#if !defined (ACPI_NO_ERROR_MESSAGES)
/*******************************************************************************
*
* FUNCTION: acpi_ut_predefined_warning
*
* PARAMETERS: module_name - Caller's module name (for error output)
* line_number - Caller's line number (for error output)
* pathname - Full pathname to the node
* node_flags - From Namespace node for the method/object
* format - Printf format string + additional args
*
* RETURN: None
*
* DESCRIPTION: Warnings for the predefined validation module. Messages are
* only emitted the first time a problem with a particular
* method/object is detected. This prevents a flood of error
* messages for methods that are repeatedly evaluated.
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_ut_predefined_warning(const char *module_name,
u32 line_number,
char *pathname,
u16 node_flags, const char *format, ...)
{
va_list arg_list;
/*
* Warning messages for this method/object will be disabled after the
* first time a validation fails or an object is successfully repaired.
*/
if (node_flags & ANOBJ_EVALUATED) {
return;
}
acpi_os_printf(ACPI_MSG_WARNING "%s: ", pathname);
va_start(arg_list, format);
acpi_os_vprintf(format, arg_list);
ACPI_MSG_SUFFIX;
va_end(arg_list);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_predefined_info
*
* PARAMETERS: module_name - Caller's module name (for error output)
* line_number - Caller's line number (for error output)
* pathname - Full pathname to the node
* node_flags - From Namespace node for the method/object
* format - Printf format string + additional args
*
* RETURN: None
*
* DESCRIPTION: Info messages for the predefined validation module. Messages
* are only emitted the first time a problem with a particular
* method/object is detected. This prevents a flood of
* messages for methods that are repeatedly evaluated.
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_ut_predefined_info(const char *module_name,
u32 line_number,
char *pathname, u16 node_flags, const char *format, ...)
{
va_list arg_list;
/*
* Warning messages for this method/object will be disabled after the
* first time a validation fails or an object is successfully repaired.
*/
if (node_flags & ANOBJ_EVALUATED) {
return;
}
acpi_os_printf(ACPI_MSG_INFO "%s: ", pathname);
va_start(arg_list, format);
acpi_os_vprintf(format, arg_list);
ACPI_MSG_SUFFIX;
va_end(arg_list);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_predefined_bios_error
*
* PARAMETERS: module_name - Caller's module name (for error output)
* line_number - Caller's line number (for error output)
* pathname - Full pathname to the node
* node_flags - From Namespace node for the method/object
* format - Printf format string + additional args
*
* RETURN: None
*
* DESCRIPTION: BIOS error message for predefined names. Messages
* are only emitted the first time a problem with a particular
* method/object is detected. This prevents a flood of
* messages for methods that are repeatedly evaluated.
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_ut_predefined_bios_error(const char *module_name,
u32 line_number,
char *pathname,
u16 node_flags, const char *format, ...)
{
va_list arg_list;
/*
* Warning messages for this method/object will be disabled after the
* first time a validation fails or an object is successfully repaired.
*/
if (node_flags & ANOBJ_EVALUATED) {
return;
}
acpi_os_printf(ACPI_MSG_BIOS_ERROR "%s: ", pathname);
va_start(arg_list, format);
acpi_os_vprintf(format, arg_list);
ACPI_MSG_SUFFIX;
va_end(arg_list);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_prefixed_namespace_error
*
* PARAMETERS: module_name - Caller's module name (for error output)
* line_number - Caller's line number (for error output)
* prefix_scope - Scope/Path that prefixes the internal path
* internal_path - Name or path of the namespace node
* lookup_status - Exception code from NS lookup
*
* RETURN: None
*
* DESCRIPTION: Print error message with the full pathname constructed this way:
*
* prefix_scope_node_full_path.externalized_internal_path
*
* NOTE: 10/2017: Treat the major ns_lookup errors as firmware errors
*
******************************************************************************/
void
acpi_ut_prefixed_namespace_error(const char *module_name,
u32 line_number,
union acpi_generic_state *prefix_scope,
const char *internal_path,
acpi_status lookup_status)
{
char *full_path;
const char *message;
/*
* Main cases:
* 1) Object creation, object must not already exist
* 2) Object lookup, object must exist
*/
switch (lookup_status) {
case AE_ALREADY_EXISTS:
acpi_os_printf(ACPI_MSG_BIOS_ERROR);
message = "Failure creating named object";
break;
case AE_NOT_FOUND:
acpi_os_printf(ACPI_MSG_BIOS_ERROR);
message = "Could not resolve symbol";
break;
default:
acpi_os_printf(ACPI_MSG_ERROR);
message = "Failure resolving symbol";
break;
}
/* Concatenate the prefix path and the internal path */
full_path =
acpi_ns_build_prefixed_pathname(prefix_scope, internal_path);
acpi_os_printf("%s [%s], %s", message,
full_path ? full_path : "Could not get pathname",
acpi_format_exception(lookup_status));
if (full_path) {
ACPI_FREE(full_path);
}
ACPI_MSG_SUFFIX;
}
#ifdef __OBSOLETE_FUNCTION
/*******************************************************************************
*
* FUNCTION: acpi_ut_namespace_error
*
* PARAMETERS: module_name - Caller's module name (for error output)
* line_number - Caller's line number (for error output)
* internal_name - Name or path of the namespace node
* lookup_status - Exception code from NS lookup
*
* RETURN: None
*
* DESCRIPTION: Print error message with the full pathname for the NS node.
*
******************************************************************************/
void
acpi_ut_namespace_error(const char *module_name,
u32 line_number,
const char *internal_name, acpi_status lookup_status)
{
acpi_status status;
u32 bad_name;
char *name = NULL;
ACPI_MSG_REDIRECT_BEGIN;
acpi_os_printf(ACPI_MSG_ERROR);
if (lookup_status == AE_BAD_CHARACTER) {
/* There is a non-ascii character in the name */
ACPI_MOVE_32_TO_32(&bad_name,
ACPI_CAST_PTR(u32, internal_name));
acpi_os_printf("[0x%.8X] (NON-ASCII)", bad_name);
} else {
/* Convert path to external format */
status =
acpi_ns_externalize_name(ACPI_UINT32_MAX, internal_name,
NULL, &name);
/* Print target name */
if (ACPI_SUCCESS(status)) {
acpi_os_printf("[%s]", name);
} else {
acpi_os_printf("[COULD NOT EXTERNALIZE NAME]");
}
if (name) {
ACPI_FREE(name);
}
}
acpi_os_printf(" Namespace lookup failure, %s",
acpi_format_exception(lookup_status));
ACPI_MSG_SUFFIX;
ACPI_MSG_REDIRECT_END;
}
#endif
/*******************************************************************************
*
* FUNCTION: acpi_ut_method_error
*
* PARAMETERS: module_name - Caller's module name (for error output)
* line_number - Caller's line number (for error output)
* message - Error message to use on failure
* prefix_node - Prefix relative to the path
* path - Path to the node (optional)
* method_status - Execution status
*
* RETURN: None
*
* DESCRIPTION: Print error message with the full pathname for the method.
*
******************************************************************************/
void
acpi_ut_method_error(const char *module_name,
u32 line_number,
const char *message,
struct acpi_namespace_node *prefix_node,
const char *path, acpi_status method_status)
{
acpi_status status;
struct acpi_namespace_node *node = prefix_node;
ACPI_MSG_REDIRECT_BEGIN;
acpi_os_printf(ACPI_MSG_ERROR);
if (path) {
status = acpi_ns_get_node(prefix_node, path,
ACPI_NS_NO_UPSEARCH, &node);
if (ACPI_FAILURE(status)) {
acpi_os_printf("[Could not get node by pathname]");
}
}
acpi_ns_print_node_pathname(node, message);
acpi_os_printf(" due to previous error (%s)",
acpi_format_exception(method_status));
ACPI_MSG_SUFFIX;
ACPI_MSG_REDIRECT_END;
}
#endif /* ACPI_NO_ERROR_MESSAGES */
| linux-master | drivers/acpi/acpica/uterror.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: nsarguments - Validation of args for ACPI predefined methods
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acpredef.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsarguments")
/*******************************************************************************
*
* FUNCTION: acpi_ns_check_argument_types
*
* PARAMETERS: info - Method execution information block
*
* RETURN: None
*
* DESCRIPTION: Check the incoming argument count and all argument types
* against the argument type list for a predefined name.
*
******************************************************************************/
void acpi_ns_check_argument_types(struct acpi_evaluate_info *info)
{
u16 arg_type_list;
u8 arg_count;
u8 arg_type;
u8 user_arg_type;
u32 i;
/*
* If not a predefined name, cannot typecheck args, because
* we have no idea what argument types are expected.
* Also, ignore typecheck if warnings/errors if this method
* has already been evaluated at least once -- in order
* to suppress repetitive messages.
*/
if (!info->predefined || (info->node->flags & ANOBJ_EVALUATED)) {
return;
}
arg_type_list = info->predefined->info.argument_list;
arg_count = METHOD_GET_ARG_COUNT(arg_type_list);
/* Typecheck all arguments */
for (i = 0; ((i < arg_count) && (i < info->param_count)); i++) {
arg_type = METHOD_GET_NEXT_TYPE(arg_type_list);
user_arg_type = info->parameters[i]->common.type;
/* No typechecking for ACPI_TYPE_ANY */
if ((user_arg_type != arg_type) && (arg_type != ACPI_TYPE_ANY)) {
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
ACPI_WARN_ALWAYS,
"Argument #%u type mismatch - "
"Found [%s], ACPI requires [%s]",
(i + 1),
acpi_ut_get_type_name
(user_arg_type),
acpi_ut_get_type_name(arg_type)));
/* Prevent any additional typechecking for this method */
info->node->flags |= ANOBJ_EVALUATED;
}
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_check_acpi_compliance
*
* PARAMETERS: pathname - Full pathname to the node (for error msgs)
* node - Namespace node for the method/object
* predefined - Pointer to entry in predefined name table
*
* RETURN: None
*
* DESCRIPTION: Check that the declared parameter count (in ASL/AML) for a
* predefined name is what is expected (matches what is defined in
* the ACPI specification for this predefined name.)
*
******************************************************************************/
void
acpi_ns_check_acpi_compliance(char *pathname,
struct acpi_namespace_node *node,
const union acpi_predefined_info *predefined)
{
u32 aml_param_count;
u32 required_param_count;
if (!predefined || (node->flags & ANOBJ_EVALUATED)) {
return;
}
/* Get the ACPI-required arg count from the predefined info table */
required_param_count =
METHOD_GET_ARG_COUNT(predefined->info.argument_list);
/*
* If this object is not a control method, we can check if the ACPI
* spec requires that it be a method.
*/
if (node->type != ACPI_TYPE_METHOD) {
if (required_param_count > 0) {
/* Object requires args, must be implemented as a method */
ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname,
ACPI_WARN_ALWAYS,
"Object (%s) must be a control method with %u arguments",
acpi_ut_get_type_name(node->
type),
required_param_count));
} else if (!required_param_count
&& !predefined->info.expected_btypes) {
/* Object requires no args and no return value, must be a method */
ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname,
ACPI_WARN_ALWAYS,
"Object (%s) must be a control method "
"with no arguments and no return value",
acpi_ut_get_type_name(node->
type)));
}
return;
}
/*
* This is a control method.
* Check that the ASL/AML-defined parameter count for this method
* matches the ACPI-required parameter count
*
* Some methods are allowed to have a "minimum" number of args (_SCP)
* because their definition in ACPI has changed over time.
*
* Note: These are BIOS errors in the declaration of the object
*/
aml_param_count = node->object->method.param_count;
if (aml_param_count < required_param_count) {
ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
"Insufficient arguments - "
"ASL declared %u, ACPI requires %u",
aml_param_count,
required_param_count));
} else if ((aml_param_count > required_param_count)
&& !(predefined->info.
argument_list & ARG_COUNT_IS_MINIMUM)) {
ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
"Excess arguments - "
"ASL declared %u, ACPI requires %u",
aml_param_count,
required_param_count));
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_check_argument_count
*
* PARAMETERS: pathname - Full pathname to the node (for error msgs)
* node - Namespace node for the method/object
* user_param_count - Number of args passed in by the caller
* predefined - Pointer to entry in predefined name table
*
* RETURN: None
*
* DESCRIPTION: Check that incoming argument count matches the declared
* parameter count (in the ASL/AML) for an object.
*
******************************************************************************/
void
acpi_ns_check_argument_count(char *pathname,
struct acpi_namespace_node *node,
u32 user_param_count,
const union acpi_predefined_info *predefined)
{
u32 aml_param_count;
u32 required_param_count;
if (node->flags & ANOBJ_EVALUATED) {
return;
}
if (!predefined) {
/*
* Not a predefined name. Check the incoming user argument count
* against the count that is specified in the method/object.
*/
if (node->type != ACPI_TYPE_METHOD) {
if (user_param_count) {
ACPI_INFO_PREDEFINED((AE_INFO, pathname,
ACPI_WARN_ALWAYS,
"%u arguments were passed to a non-method ACPI object (%s)",
user_param_count,
acpi_ut_get_type_name
(node->type)));
}
return;
}
/*
* This is a control method. Check the parameter count.
* We can only check the incoming argument count against the
* argument count declared for the method in the ASL/AML.
*
* Emit a message if too few or too many arguments have been passed
* by the caller.
*
* Note: Too many arguments will not cause the method to
* fail. However, the method will fail if there are too few
* arguments and the method attempts to use one of the missing ones.
*/
aml_param_count = node->object->method.param_count;
if (user_param_count < aml_param_count) {
ACPI_WARN_PREDEFINED((AE_INFO, pathname,
ACPI_WARN_ALWAYS,
"Insufficient arguments - "
"Caller passed %u, method requires %u",
user_param_count,
aml_param_count));
} else if (user_param_count > aml_param_count) {
ACPI_INFO_PREDEFINED((AE_INFO, pathname,
ACPI_WARN_ALWAYS,
"Excess arguments - "
"Caller passed %u, method requires %u",
user_param_count,
aml_param_count));
}
return;
}
/*
* This is a predefined name. Validate the user-supplied parameter
* count against the ACPI specification. We don't validate against
* the method itself because what is important here is that the
* caller is in conformance with the spec. (The arg count for the
* method was checked against the ACPI spec earlier.)
*
* Some methods are allowed to have a "minimum" number of args (_SCP)
* because their definition in ACPI has changed over time.
*/
required_param_count =
METHOD_GET_ARG_COUNT(predefined->info.argument_list);
if (user_param_count < required_param_count) {
ACPI_WARN_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
"Insufficient arguments - "
"Caller passed %u, ACPI requires %u",
user_param_count, required_param_count));
} else if ((user_param_count > required_param_count) &&
!(predefined->info.argument_list & ARG_COUNT_IS_MINIMUM)) {
ACPI_INFO_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
"Excess arguments - "
"Caller passed %u, ACPI requires %u",
user_param_count, required_param_count));
}
}
| linux-master | drivers/acpi/acpica/nsarguments.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: tbutils - ACPI Table utilities
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "actables.h"
#define _COMPONENT ACPI_TABLES
ACPI_MODULE_NAME("tbutils")
/* Local prototypes */
static acpi_physical_address
acpi_tb_get_root_table_entry(u8 *table_entry, u32 table_entry_size);
#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************
*
* FUNCTION: acpi_tb_initialize_facs
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Create a permanent mapping for the FADT and save it in a global
* for accessing the Global Lock and Firmware Waking Vector
*
******************************************************************************/
acpi_status acpi_tb_initialize_facs(void)
{
struct acpi_table_facs *facs;
/* If Hardware Reduced flag is set, there is no FACS */
if (acpi_gbl_reduced_hardware) {
acpi_gbl_FACS = NULL;
return (AE_OK);
} else if (acpi_gbl_FADT.Xfacs &&
(!acpi_gbl_FADT.facs
|| !acpi_gbl_use32_bit_facs_addresses)) {
(void)acpi_get_table_by_index(acpi_gbl_xfacs_index,
ACPI_CAST_INDIRECT_PTR(struct
acpi_table_header,
&facs));
acpi_gbl_FACS = facs;
} else if (acpi_gbl_FADT.facs) {
(void)acpi_get_table_by_index(acpi_gbl_facs_index,
ACPI_CAST_INDIRECT_PTR(struct
acpi_table_header,
&facs));
acpi_gbl_FACS = facs;
}
/* If there is no FACS, just continue. There was already an error msg */
return (AE_OK);
}
#endif /* !ACPI_REDUCED_HARDWARE */
/*******************************************************************************
*
* FUNCTION: acpi_tb_check_dsdt_header
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Quick compare to check validity of the DSDT. This will detect
* if the DSDT has been replaced from outside the OS and/or if
* the DSDT header has been corrupted.
*
******************************************************************************/
void acpi_tb_check_dsdt_header(void)
{
/* Compare original length and checksum to current values */
if (acpi_gbl_original_dsdt_header.length != acpi_gbl_DSDT->length ||
acpi_gbl_original_dsdt_header.checksum != acpi_gbl_DSDT->checksum) {
ACPI_BIOS_ERROR((AE_INFO,
"The DSDT has been corrupted or replaced - "
"old, new headers below"));
acpi_tb_print_table_header(0, &acpi_gbl_original_dsdt_header);
acpi_tb_print_table_header(0, acpi_gbl_DSDT);
ACPI_ERROR((AE_INFO,
"Please send DMI info to [email protected]\n"
"If system does not work as expected, please boot with acpi=copy_dsdt"));
/* Disable further error messages */
acpi_gbl_original_dsdt_header.length = acpi_gbl_DSDT->length;
acpi_gbl_original_dsdt_header.checksum =
acpi_gbl_DSDT->checksum;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_copy_dsdt
*
* PARAMETERS: table_index - Index of installed table to copy
*
* RETURN: The copied DSDT
*
* DESCRIPTION: Implements a subsystem option to copy the DSDT to local memory.
* Some very bad BIOSs are known to either corrupt the DSDT or
* install a new, bad DSDT. This copy works around the problem.
*
******************************************************************************/
struct acpi_table_header *acpi_tb_copy_dsdt(u32 table_index)
{
struct acpi_table_header *new_table;
struct acpi_table_desc *table_desc;
table_desc = &acpi_gbl_root_table_list.tables[table_index];
new_table = ACPI_ALLOCATE(table_desc->length);
if (!new_table) {
ACPI_ERROR((AE_INFO, "Could not copy DSDT of length 0x%X",
table_desc->length));
return (NULL);
}
memcpy(new_table, table_desc->pointer, table_desc->length);
acpi_tb_uninstall_table(table_desc);
acpi_tb_init_table_descriptor(&acpi_gbl_root_table_list.
tables[acpi_gbl_dsdt_index],
ACPI_PTR_TO_PHYSADDR(new_table),
ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL,
new_table);
ACPI_INFO(("Forced DSDT copy: length 0x%05X copied locally, original unmapped", new_table->length));
return (new_table);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_get_root_table_entry
*
* PARAMETERS: table_entry - Pointer to the RSDT/XSDT table entry
* table_entry_size - sizeof 32 or 64 (RSDT or XSDT)
*
* RETURN: Physical address extracted from the root table
*
* DESCRIPTION: Get one root table entry. Handles 32-bit and 64-bit cases on
* both 32-bit and 64-bit platforms
*
* NOTE: acpi_physical_address is 32-bit on 32-bit platforms, 64-bit on
* 64-bit platforms.
*
******************************************************************************/
static acpi_physical_address
acpi_tb_get_root_table_entry(u8 *table_entry, u32 table_entry_size)
{
u32 address32;
u64 address64;
/*
* Get the table physical address (32-bit for RSDT, 64-bit for XSDT):
* Note: Addresses are 32-bit aligned (not 64) in both RSDT and XSDT
*/
if (table_entry_size == ACPI_RSDT_ENTRY_SIZE) {
/*
* 32-bit platform, RSDT: Return 32-bit table entry
* 64-bit platform, RSDT: Expand 32-bit to 64-bit and return
*/
ACPI_MOVE_32_TO_32(&address32, table_entry);
return address32;
} else {
/*
* 32-bit platform, XSDT: Truncate 64-bit to 32-bit and return
* 64-bit platform, XSDT: Move (unaligned) 64-bit to local,
* return 64-bit
*/
ACPI_MOVE_64_TO_64(&address64, table_entry);
#if ACPI_MACHINE_WIDTH == 32
if (address64 > ACPI_UINT32_MAX) {
/* Will truncate 64-bit address to 32 bits, issue warning */
ACPI_BIOS_WARNING((AE_INFO,
"64-bit Physical Address in XSDT is too large (0x%8.8X%8.8X),"
" truncating",
ACPI_FORMAT_UINT64(address64)));
}
#endif
return ((acpi_physical_address)(address64));
}
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_parse_root_table
*
* PARAMETERS: rsdp_address - Pointer to the RSDP
*
* RETURN: Status
*
* DESCRIPTION: This function is called to parse the Root System Description
* Table (RSDT or XSDT)
*
* NOTE: Tables are mapped (not copied) for efficiency. The FACS must
* be mapped and cannot be copied because it contains the actual
* memory location of the ACPI Global Lock.
*
******************************************************************************/
acpi_status ACPI_INIT_FUNCTION
acpi_tb_parse_root_table(acpi_physical_address rsdp_address)
{
struct acpi_table_rsdp *rsdp;
u32 table_entry_size;
u32 i;
u32 table_count;
struct acpi_table_header *table;
acpi_physical_address address;
u32 length;
u8 *table_entry;
acpi_status status;
u32 table_index;
ACPI_FUNCTION_TRACE(tb_parse_root_table);
/* Map the entire RSDP and extract the address of the RSDT or XSDT */
rsdp = acpi_os_map_memory(rsdp_address, sizeof(struct acpi_table_rsdp));
if (!rsdp) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
acpi_tb_print_table_header(rsdp_address,
ACPI_CAST_PTR(struct acpi_table_header,
rsdp));
/* Use XSDT if present and not overridden. Otherwise, use RSDT */
if ((rsdp->revision > 1) &&
rsdp->xsdt_physical_address && !acpi_gbl_do_not_use_xsdt) {
/*
* RSDP contains an XSDT (64-bit physical addresses). We must use
* the XSDT if the revision is > 1 and the XSDT pointer is present,
* as per the ACPI specification.
*/
address = (acpi_physical_address)rsdp->xsdt_physical_address;
table_entry_size = ACPI_XSDT_ENTRY_SIZE;
} else {
/* Root table is an RSDT (32-bit physical addresses) */
address = (acpi_physical_address)rsdp->rsdt_physical_address;
table_entry_size = ACPI_RSDT_ENTRY_SIZE;
}
/*
* It is not possible to map more than one entry in some environments,
* so unmap the RSDP here before mapping other tables
*/
acpi_os_unmap_memory(rsdp, sizeof(struct acpi_table_rsdp));
/* Map the RSDT/XSDT table header to get the full table length */
table = acpi_os_map_memory(address, sizeof(struct acpi_table_header));
if (!table) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
acpi_tb_print_table_header(address, table);
/*
* Validate length of the table, and map entire table.
* Minimum length table must contain at least one entry.
*/
length = table->length;
acpi_os_unmap_memory(table, sizeof(struct acpi_table_header));
if (length < (sizeof(struct acpi_table_header) + table_entry_size)) {
ACPI_BIOS_ERROR((AE_INFO,
"Invalid table length 0x%X in RSDT/XSDT",
length));
return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH);
}
table = acpi_os_map_memory(address, length);
if (!table) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Validate the root table checksum */
status = acpi_ut_verify_checksum(table, length);
if (ACPI_FAILURE(status)) {
acpi_os_unmap_memory(table, length);
return_ACPI_STATUS(status);
}
/* Get the number of entries and pointer to first entry */
table_count = (u32)((table->length - sizeof(struct acpi_table_header)) /
table_entry_size);
table_entry = ACPI_ADD_PTR(u8, table, sizeof(struct acpi_table_header));
/* Initialize the root table array from the RSDT/XSDT */
for (i = 0; i < table_count; i++) {
/* Get the table physical address (32-bit for RSDT, 64-bit for XSDT) */
address =
acpi_tb_get_root_table_entry(table_entry, table_entry_size);
/* Skip NULL entries in RSDT/XSDT */
if (!address) {
goto next_table;
}
status = acpi_tb_install_standard_table(address,
ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL,
NULL, FALSE, TRUE,
&table_index);
if (ACPI_SUCCESS(status) &&
ACPI_COMPARE_NAMESEG(&acpi_gbl_root_table_list.
tables[table_index].signature,
ACPI_SIG_FADT)) {
acpi_gbl_fadt_index = table_index;
acpi_tb_parse_fadt();
}
next_table:
table_entry += table_entry_size;
}
acpi_os_unmap_memory(table, length);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_get_table
*
* PARAMETERS: table_desc - Table descriptor
* out_table - Where the pointer to the table is returned
*
* RETURN: Status and pointer to the requested table
*
* DESCRIPTION: Increase a reference to a table descriptor and return the
* validated table pointer.
* If the table descriptor is an entry of the root table list,
* this API must be invoked with ACPI_MTX_TABLES acquired.
*
******************************************************************************/
acpi_status
acpi_tb_get_table(struct acpi_table_desc *table_desc,
struct acpi_table_header **out_table)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_tb_get_table);
if (table_desc->validation_count == 0) {
/* Table need to be "VALIDATED" */
status = acpi_tb_validate_table(table_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
if (table_desc->validation_count < ACPI_MAX_TABLE_VALIDATIONS) {
table_desc->validation_count++;
/*
* Detect validation_count overflows to ensure that the warning
* message will only be printed once.
*/
if (table_desc->validation_count >= ACPI_MAX_TABLE_VALIDATIONS) {
ACPI_WARNING((AE_INFO,
"Table %p, Validation count overflows\n",
table_desc));
}
}
*out_table = table_desc->pointer;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_put_table
*
* PARAMETERS: table_desc - Table descriptor
*
* RETURN: None
*
* DESCRIPTION: Decrease a reference to a table descriptor and release the
* validated table pointer if no references.
* If the table descriptor is an entry of the root table list,
* this API must be invoked with ACPI_MTX_TABLES acquired.
*
******************************************************************************/
void acpi_tb_put_table(struct acpi_table_desc *table_desc)
{
ACPI_FUNCTION_TRACE(acpi_tb_put_table);
if (table_desc->validation_count < ACPI_MAX_TABLE_VALIDATIONS) {
table_desc->validation_count--;
/*
* Detect validation_count underflows to ensure that the warning
* message will only be printed once.
*/
if (table_desc->validation_count >= ACPI_MAX_TABLE_VALIDATIONS) {
ACPI_WARNING((AE_INFO,
"Table %p, Validation count underflows\n",
table_desc));
return_VOID;
}
}
if (table_desc->validation_count == 0) {
/* Table need to be "INVALIDATED" */
acpi_tb_invalidate_table(table_desc);
}
return_VOID;
}
| linux-master | drivers/acpi/acpica/tbutils.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: rsaddr - Address resource descriptors (16/32/64)
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acresrc.h"
#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME("rsaddr")
/*******************************************************************************
*
* acpi_rs_convert_address16 - All WORD (16-bit) address resources
*
******************************************************************************/
struct acpi_rsconvert_info acpi_rs_convert_address16[5] = {
{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_ADDRESS16,
ACPI_RS_SIZE(struct acpi_resource_address16),
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_address16)},
{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_ADDRESS16,
sizeof(struct aml_resource_address16),
0},
/* Resource Type, General Flags, and Type-Specific Flags */
{ACPI_RSC_ADDRESS, 0, 0, 0},
/*
* These fields are contiguous in both the source and destination:
* Address Granularity
* Address Range Minimum
* Address Range Maximum
* Address Translation Offset
* Address Length
*/
{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.address16.address.granularity),
AML_OFFSET(address16.granularity),
5},
/* Optional resource_source (Index and String) */
{ACPI_RSC_SOURCE, ACPI_RS_OFFSET(data.address16.resource_source),
0,
sizeof(struct aml_resource_address16)}
};
/*******************************************************************************
*
* acpi_rs_convert_address32 - All DWORD (32-bit) address resources
*
******************************************************************************/
struct acpi_rsconvert_info acpi_rs_convert_address32[5] = {
{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_ADDRESS32,
ACPI_RS_SIZE(struct acpi_resource_address32),
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_address32)},
{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_ADDRESS32,
sizeof(struct aml_resource_address32),
0},
/* Resource Type, General Flags, and Type-Specific Flags */
{ACPI_RSC_ADDRESS, 0, 0, 0},
/*
* These fields are contiguous in both the source and destination:
* Address Granularity
* Address Range Minimum
* Address Range Maximum
* Address Translation Offset
* Address Length
*/
{ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.address32.address.granularity),
AML_OFFSET(address32.granularity),
5},
/* Optional resource_source (Index and String) */
{ACPI_RSC_SOURCE, ACPI_RS_OFFSET(data.address32.resource_source),
0,
sizeof(struct aml_resource_address32)}
};
/*******************************************************************************
*
* acpi_rs_convert_address64 - All QWORD (64-bit) address resources
*
******************************************************************************/
struct acpi_rsconvert_info acpi_rs_convert_address64[5] = {
{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_ADDRESS64,
ACPI_RS_SIZE(struct acpi_resource_address64),
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_address64)},
{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_ADDRESS64,
sizeof(struct aml_resource_address64),
0},
/* Resource Type, General Flags, and Type-Specific Flags */
{ACPI_RSC_ADDRESS, 0, 0, 0},
/*
* These fields are contiguous in both the source and destination:
* Address Granularity
* Address Range Minimum
* Address Range Maximum
* Address Translation Offset
* Address Length
*/
{ACPI_RSC_MOVE64, ACPI_RS_OFFSET(data.address64.address.granularity),
AML_OFFSET(address64.granularity),
5},
/* Optional resource_source (Index and String) */
{ACPI_RSC_SOURCE, ACPI_RS_OFFSET(data.address64.resource_source),
0,
sizeof(struct aml_resource_address64)}
};
/*******************************************************************************
*
* acpi_rs_convert_ext_address64 - All Extended (64-bit) address resources
*
******************************************************************************/
struct acpi_rsconvert_info acpi_rs_convert_ext_address64[5] = {
{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64,
ACPI_RS_SIZE(struct acpi_resource_extended_address64),
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_ext_address64)},
{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64,
sizeof(struct aml_resource_extended_address64),
0},
/* Resource Type, General Flags, and Type-Specific Flags */
{ACPI_RSC_ADDRESS, 0, 0, 0},
/* Revision ID */
{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.ext_address64.revision_ID),
AML_OFFSET(ext_address64.revision_ID),
1},
/*
* These fields are contiguous in both the source and destination:
* Address Granularity
* Address Range Minimum
* Address Range Maximum
* Address Translation Offset
* Address Length
* Type-Specific Attribute
*/
{ACPI_RSC_MOVE64,
ACPI_RS_OFFSET(data.ext_address64.address.granularity),
AML_OFFSET(ext_address64.granularity),
6}
};
/*******************************************************************************
*
* acpi_rs_convert_general_flags - Flags common to all address descriptors
*
******************************************************************************/
static struct acpi_rsconvert_info acpi_rs_convert_general_flags[6] = {
{ACPI_RSC_FLAGINIT, 0, AML_OFFSET(address.flags),
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_general_flags)},
/* Resource Type (Memory, Io, bus_number, etc.) */
{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.address.resource_type),
AML_OFFSET(address.resource_type),
1},
/* General flags - Consume, Decode, min_fixed, max_fixed */
{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.producer_consumer),
AML_OFFSET(address.flags),
0},
{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.decode),
AML_OFFSET(address.flags),
1},
{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.min_address_fixed),
AML_OFFSET(address.flags),
2},
{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.max_address_fixed),
AML_OFFSET(address.flags),
3}
};
/*******************************************************************************
*
* acpi_rs_convert_mem_flags - Flags common to Memory address descriptors
*
******************************************************************************/
static struct acpi_rsconvert_info acpi_rs_convert_mem_flags[5] = {
{ACPI_RSC_FLAGINIT, 0, AML_OFFSET(address.specific_flags),
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_mem_flags)},
/* Memory-specific flags */
{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.info.mem.write_protect),
AML_OFFSET(address.specific_flags),
0},
{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.address.info.mem.caching),
AML_OFFSET(address.specific_flags),
1},
{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.address.info.mem.range_type),
AML_OFFSET(address.specific_flags),
3},
{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.info.mem.translation),
AML_OFFSET(address.specific_flags),
5}
};
/*******************************************************************************
*
* acpi_rs_convert_io_flags - Flags common to I/O address descriptors
*
******************************************************************************/
static struct acpi_rsconvert_info acpi_rs_convert_io_flags[4] = {
{ACPI_RSC_FLAGINIT, 0, AML_OFFSET(address.specific_flags),
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_io_flags)},
/* I/O-specific flags */
{ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.address.info.io.range_type),
AML_OFFSET(address.specific_flags),
0},
{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.info.io.translation),
AML_OFFSET(address.specific_flags),
4},
{ACPI_RSC_1BITFLAG,
ACPI_RS_OFFSET(data.address.info.io.translation_type),
AML_OFFSET(address.specific_flags),
5}
};
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_address_common
*
* PARAMETERS: resource - Pointer to the internal resource struct
* aml - Pointer to the AML resource descriptor
*
* RETURN: TRUE if the resource_type field is OK, FALSE otherwise
*
* DESCRIPTION: Convert common flag fields from a raw AML resource descriptor
* to an internal resource descriptor
*
******************************************************************************/
u8
acpi_rs_get_address_common(struct acpi_resource *resource,
union aml_resource *aml)
{
struct aml_resource_address address;
ACPI_FUNCTION_ENTRY();
/* Avoid undefined behavior: member access within misaligned address */
memcpy(&address, aml, sizeof(address));
/* Validate the Resource Type */
if ((address.resource_type > 2) && (address.resource_type < 0xC0)) {
return (FALSE);
}
/* Get the Resource Type and General Flags */
(void)acpi_rs_convert_aml_to_resource(resource, aml,
acpi_rs_convert_general_flags);
/* Get the Type-Specific Flags (Memory and I/O descriptors only) */
if (resource->data.address.resource_type == ACPI_MEMORY_RANGE) {
(void)acpi_rs_convert_aml_to_resource(resource, aml,
acpi_rs_convert_mem_flags);
} else if (resource->data.address.resource_type == ACPI_IO_RANGE) {
(void)acpi_rs_convert_aml_to_resource(resource, aml,
acpi_rs_convert_io_flags);
} else {
/* Generic resource type, just grab the type_specific byte */
resource->data.address.info.type_specific =
address.specific_flags;
}
return (TRUE);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_set_address_common
*
* PARAMETERS: aml - Pointer to the AML resource descriptor
* resource - Pointer to the internal resource struct
*
* RETURN: None
*
* DESCRIPTION: Convert common flag fields from a resource descriptor to an
* AML descriptor
*
******************************************************************************/
void
acpi_rs_set_address_common(union aml_resource *aml,
struct acpi_resource *resource)
{
ACPI_FUNCTION_ENTRY();
/* Set the Resource Type and General Flags */
(void)acpi_rs_convert_resource_to_aml(resource, aml,
acpi_rs_convert_general_flags);
/* Set the Type-Specific Flags (Memory and I/O descriptors only) */
if (resource->data.address.resource_type == ACPI_MEMORY_RANGE) {
(void)acpi_rs_convert_resource_to_aml(resource, aml,
acpi_rs_convert_mem_flags);
} else if (resource->data.address.resource_type == ACPI_IO_RANGE) {
(void)acpi_rs_convert_resource_to_aml(resource, aml,
acpi_rs_convert_io_flags);
} else {
/* Generic resource type, just copy the type_specific byte */
aml->address.specific_flags =
resource->data.address.info.type_specific;
}
}
| linux-master | drivers/acpi/acpica/rsaddr.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: nsobject - Utilities for objects attached to namespace
* table entries
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsobject")
/*******************************************************************************
*
* FUNCTION: acpi_ns_attach_object
*
* PARAMETERS: node - Parent Node
* object - Object to be attached
* type - Type of object, or ACPI_TYPE_ANY if not
* known
*
* RETURN: Status
*
* DESCRIPTION: Record the given object as the value associated with the
* name whose acpi_handle is passed. If Object is NULL
* and Type is ACPI_TYPE_ANY, set the name as having no value.
* Note: Future may require that the Node->Flags field be passed
* as a parameter.
*
* MUTEX: Assumes namespace is locked
*
******************************************************************************/
acpi_status
acpi_ns_attach_object(struct acpi_namespace_node *node,
union acpi_operand_object *object, acpi_object_type type)
{
union acpi_operand_object *obj_desc;
union acpi_operand_object *last_obj_desc;
acpi_object_type object_type = ACPI_TYPE_ANY;
ACPI_FUNCTION_TRACE(ns_attach_object);
/*
* Parameter validation
*/
if (!node) {
/* Invalid handle */
ACPI_ERROR((AE_INFO, "Null NamedObj handle"));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
if (!object && (ACPI_TYPE_ANY != type)) {
/* Null object */
ACPI_ERROR((AE_INFO,
"Null object, but type not ACPI_TYPE_ANY"));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
/* Not a name handle */
ACPI_ERROR((AE_INFO, "Invalid handle %p [%s]",
node, acpi_ut_get_descriptor_name(node)));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Check if this object is already attached */
if (node->object == object) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Obj %p already installed in NameObj %p\n",
object, node));
return_ACPI_STATUS(AE_OK);
}
/* If null object, we will just install it */
if (!object) {
obj_desc = NULL;
object_type = ACPI_TYPE_ANY;
}
/*
* If the source object is a namespace Node with an attached object,
* we will use that (attached) object
*/
else if ((ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED) &&
((struct acpi_namespace_node *)object)->object) {
/*
* Value passed is a name handle and that name has a
* non-null value. Use that name's value and type.
*/
obj_desc = ((struct acpi_namespace_node *)object)->object;
object_type = ((struct acpi_namespace_node *)object)->type;
}
/*
* Otherwise, we will use the parameter object, but we must type
* it first
*/
else {
obj_desc = (union acpi_operand_object *)object;
/* Use the given type */
object_type = type;
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Installing %p into Node %p [%4.4s]\n",
obj_desc, node, acpi_ut_get_node_name(node)));
/* Detach an existing attached object if present */
if (node->object) {
acpi_ns_detach_object(node);
}
if (obj_desc) {
/*
* Must increment the new value's reference count
* (if it is an internal object)
*/
acpi_ut_add_reference(obj_desc);
/*
* Handle objects with multiple descriptors - walk
* to the end of the descriptor list
*/
last_obj_desc = obj_desc;
while (last_obj_desc->common.next_object) {
last_obj_desc = last_obj_desc->common.next_object;
}
/* Install the object at the front of the object list */
last_obj_desc->common.next_object = node->object;
}
node->type = (u8) object_type;
node->object = obj_desc;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_detach_object
*
* PARAMETERS: node - A Namespace node whose object will be detached
*
* RETURN: None.
*
* DESCRIPTION: Detach/delete an object associated with a namespace node.
* if the object is an allocated object, it is freed.
* Otherwise, the field is simply cleared.
*
******************************************************************************/
void acpi_ns_detach_object(struct acpi_namespace_node *node)
{
union acpi_operand_object *obj_desc;
ACPI_FUNCTION_TRACE(ns_detach_object);
obj_desc = node->object;
if (!obj_desc || (obj_desc->common.type == ACPI_TYPE_LOCAL_DATA)) {
return_VOID;
}
if (node->flags & ANOBJ_ALLOCATED_BUFFER) {
/* Free the dynamic aml buffer */
if (obj_desc->common.type == ACPI_TYPE_METHOD) {
ACPI_FREE(obj_desc->method.aml_start);
}
}
if (obj_desc->common.type == ACPI_TYPE_REGION) {
acpi_ut_remove_address_range(obj_desc->region.space_id, node);
}
/* Clear the Node entry in all cases */
node->object = NULL;
if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) == ACPI_DESC_TYPE_OPERAND) {
/* Unlink object from front of possible object list */
node->object = obj_desc->common.next_object;
/* Handle possible 2-descriptor object */
if (node->object &&
(node->object->common.type != ACPI_TYPE_LOCAL_DATA)) {
node->object = node->object->common.next_object;
}
/*
* Detach the object from any data objects (which are still held by
* the namespace node)
*/
if (obj_desc->common.next_object &&
((obj_desc->common.next_object)->common.type ==
ACPI_TYPE_LOCAL_DATA)) {
obj_desc->common.next_object = NULL;
}
}
/* Reset the node type to untyped */
node->type = ACPI_TYPE_ANY;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "Node %p [%4.4s] Object %p\n",
node, acpi_ut_get_node_name(node), obj_desc));
/* Remove one reference on the object (and all subobjects) */
acpi_ut_remove_reference(obj_desc);
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_get_attached_object
*
* PARAMETERS: node - Namespace node
*
* RETURN: Current value of the object field from the Node whose
* handle is passed
*
* DESCRIPTION: Obtain the object attached to a namespace node.
*
******************************************************************************/
union acpi_operand_object *acpi_ns_get_attached_object(struct
acpi_namespace_node
*node)
{
ACPI_FUNCTION_TRACE_PTR(ns_get_attached_object, node);
if (!node) {
ACPI_WARNING((AE_INFO, "Null Node ptr"));
return_PTR(NULL);
}
if (!node->object ||
((ACPI_GET_DESCRIPTOR_TYPE(node->object) != ACPI_DESC_TYPE_OPERAND)
&& (ACPI_GET_DESCRIPTOR_TYPE(node->object) !=
ACPI_DESC_TYPE_NAMED))
|| ((node->object)->common.type == ACPI_TYPE_LOCAL_DATA)) {
return_PTR(NULL);
}
return_PTR(node->object);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_get_secondary_object
*
* PARAMETERS: node - Namespace node
*
* RETURN: Current value of the object field from the Node whose
* handle is passed.
*
* DESCRIPTION: Obtain a secondary object associated with a namespace node.
*
******************************************************************************/
union acpi_operand_object *acpi_ns_get_secondary_object(union
acpi_operand_object
*obj_desc)
{
ACPI_FUNCTION_TRACE_PTR(ns_get_secondary_object, obj_desc);
if ((!obj_desc) ||
(obj_desc->common.type == ACPI_TYPE_LOCAL_DATA) ||
(!obj_desc->common.next_object) ||
((obj_desc->common.next_object)->common.type ==
ACPI_TYPE_LOCAL_DATA)) {
return_PTR(NULL);
}
return_PTR(obj_desc->common.next_object);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_attach_data
*
* PARAMETERS: node - Namespace node
* handler - Handler to be associated with the data
* data - Data to be attached
*
* RETURN: Status
*
* DESCRIPTION: Low-level attach data. Create and attach a Data object.
*
******************************************************************************/
acpi_status
acpi_ns_attach_data(struct acpi_namespace_node *node,
acpi_object_handler handler, void *data)
{
union acpi_operand_object *prev_obj_desc;
union acpi_operand_object *obj_desc;
union acpi_operand_object *data_desc;
/* We only allow one attachment per handler */
prev_obj_desc = NULL;
obj_desc = node->object;
while (obj_desc) {
if ((obj_desc->common.type == ACPI_TYPE_LOCAL_DATA) &&
(obj_desc->data.handler == handler)) {
return (AE_ALREADY_EXISTS);
}
prev_obj_desc = obj_desc;
obj_desc = obj_desc->common.next_object;
}
/* Create an internal object for the data */
data_desc = acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_DATA);
if (!data_desc) {
return (AE_NO_MEMORY);
}
data_desc->data.handler = handler;
data_desc->data.pointer = data;
/* Install the data object */
if (prev_obj_desc) {
prev_obj_desc->common.next_object = data_desc;
} else {
node->object = data_desc;
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_detach_data
*
* PARAMETERS: node - Namespace node
* handler - Handler associated with the data
*
* RETURN: Status
*
* DESCRIPTION: Low-level detach data. Delete the data node, but the caller
* is responsible for the actual data.
*
******************************************************************************/
acpi_status
acpi_ns_detach_data(struct acpi_namespace_node *node,
acpi_object_handler handler)
{
union acpi_operand_object *obj_desc;
union acpi_operand_object *prev_obj_desc;
prev_obj_desc = NULL;
obj_desc = node->object;
while (obj_desc) {
if ((obj_desc->common.type == ACPI_TYPE_LOCAL_DATA) &&
(obj_desc->data.handler == handler)) {
if (prev_obj_desc) {
prev_obj_desc->common.next_object =
obj_desc->common.next_object;
} else {
node->object = obj_desc->common.next_object;
}
acpi_ut_remove_reference(obj_desc);
return (AE_OK);
}
prev_obj_desc = obj_desc;
obj_desc = obj_desc->common.next_object;
}
return (AE_NOT_FOUND);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_get_attached_data
*
* PARAMETERS: node - Namespace node
* handler - Handler associated with the data
* data - Where the data is returned
*
* RETURN: Status
*
* DESCRIPTION: Low level interface to obtain data previously associated with
* a namespace node.
*
******************************************************************************/
acpi_status
acpi_ns_get_attached_data(struct acpi_namespace_node *node,
acpi_object_handler handler, void **data)
{
union acpi_operand_object *obj_desc;
obj_desc = node->object;
while (obj_desc) {
if ((obj_desc->common.type == ACPI_TYPE_LOCAL_DATA) &&
(obj_desc->data.handler == handler)) {
*data = obj_desc->data.pointer;
return (AE_OK);
}
obj_desc = obj_desc->common.next_object;
}
return (AE_NOT_FOUND);
}
| linux-master | drivers/acpi/acpica/nsobject.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: dsutils - Dispatcher utilities
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "amlcode.h"
#include "acdispat.h"
#include "acinterp.h"
#include "acnamesp.h"
#include "acdebug.h"
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dsutils")
/*******************************************************************************
*
* FUNCTION: acpi_ds_clear_implicit_return
*
* PARAMETERS: walk_state - Current State
*
* RETURN: None.
*
* DESCRIPTION: Clear and remove a reference on an implicit return value. Used
* to delete "stale" return values (if enabled, the return value
* from every operator is saved at least momentarily, in case the
* parent method exits.)
*
******************************************************************************/
void acpi_ds_clear_implicit_return(struct acpi_walk_state *walk_state)
{
ACPI_FUNCTION_NAME(ds_clear_implicit_return);
/*
* Slack must be enabled for this feature
*/
if (!acpi_gbl_enable_interpreter_slack) {
return;
}
if (walk_state->implicit_return_obj) {
/*
* Delete any "stale" implicit return. However, in
* complex statements, the implicit return value can be
* bubbled up several levels.
*/
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Removing reference on stale implicit return obj %p\n",
walk_state->implicit_return_obj));
acpi_ut_remove_reference(walk_state->implicit_return_obj);
walk_state->implicit_return_obj = NULL;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_do_implicit_return
*
* PARAMETERS: return_desc - The return value
* walk_state - Current State
* add_reference - True if a reference should be added to the
* return object
*
* RETURN: TRUE if implicit return enabled, FALSE otherwise
*
* DESCRIPTION: Implements the optional "implicit return". We save the result
* of every ASL operator and control method invocation in case the
* parent method exit. Before storing a new return value, we
* delete the previous return value.
*
******************************************************************************/
u8
acpi_ds_do_implicit_return(union acpi_operand_object *return_desc,
struct acpi_walk_state *walk_state, u8 add_reference)
{
ACPI_FUNCTION_NAME(ds_do_implicit_return);
/*
* Slack must be enabled for this feature, and we must
* have a valid return object
*/
if ((!acpi_gbl_enable_interpreter_slack) || (!return_desc)) {
return (FALSE);
}
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Result %p will be implicitly returned; Prev=%p\n",
return_desc, walk_state->implicit_return_obj));
/*
* Delete any "stale" implicit return value first. However, in
* complex statements, the implicit return value can be
* bubbled up several levels, so we don't clear the value if it
* is the same as the return_desc.
*/
if (walk_state->implicit_return_obj) {
if (walk_state->implicit_return_obj == return_desc) {
return (TRUE);
}
acpi_ds_clear_implicit_return(walk_state);
}
/* Save the implicit return value, add a reference if requested */
walk_state->implicit_return_obj = return_desc;
if (add_reference) {
acpi_ut_add_reference(return_desc);
}
return (TRUE);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_is_result_used
*
* PARAMETERS: op - Current Op
* walk_state - Current State
*
* RETURN: TRUE if result is used, FALSE otherwise
*
* DESCRIPTION: Check if a result object will be used by the parent
*
******************************************************************************/
u8
acpi_ds_is_result_used(union acpi_parse_object * op,
struct acpi_walk_state * walk_state)
{
const struct acpi_opcode_info *parent_info;
ACPI_FUNCTION_TRACE_PTR(ds_is_result_used, op);
/* Must have both an Op and a Result Object */
if (!op) {
ACPI_ERROR((AE_INFO, "Null Op"));
return_UINT8(TRUE);
}
/*
* We know that this operator is not a
* Return() operator (would not come here.) The following code is the
* optional support for a so-called "implicit return". Some AML code
* assumes that the last value of the method is "implicitly" returned
* to the caller. Just save the last result as the return value.
* NOTE: this is optional because the ASL language does not actually
* support this behavior.
*/
(void)acpi_ds_do_implicit_return(walk_state->result_obj, walk_state,
TRUE);
/*
* Now determine if the parent will use the result
*
* If there is no parent, or the parent is a scope_op, we are executing
* at the method level. An executing method typically has no parent,
* since each method is parsed separately. A method invoked externally
* via execute_control_method has a scope_op as the parent.
*/
if ((!op->common.parent) ||
(op->common.parent->common.aml_opcode == AML_SCOPE_OP)) {
/* No parent, the return value cannot possibly be used */
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"At Method level, result of [%s] not used\n",
acpi_ps_get_opcode_name(op->common.
aml_opcode)));
return_UINT8(FALSE);
}
/* Get info on the parent. The root_op is AML_SCOPE */
parent_info =
acpi_ps_get_opcode_info(op->common.parent->common.aml_opcode);
if (parent_info->class == AML_CLASS_UNKNOWN) {
ACPI_ERROR((AE_INFO, "Unknown parent opcode Op=%p", op));
return_UINT8(FALSE);
}
/*
* Decide what to do with the result based on the parent. If
* the parent opcode will not use the result, delete the object.
* Otherwise leave it as is, it will be deleted when it is used
* as an operand later.
*/
switch (parent_info->class) {
case AML_CLASS_CONTROL:
switch (op->common.parent->common.aml_opcode) {
case AML_RETURN_OP:
/* Never delete the return value associated with a return opcode */
goto result_used;
case AML_IF_OP:
case AML_WHILE_OP:
/*
* If we are executing the predicate AND this is the predicate op,
* we will use the return value
*/
if ((walk_state->control_state->common.state ==
ACPI_CONTROL_PREDICATE_EXECUTING) &&
(walk_state->control_state->control.predicate_op ==
op)) {
goto result_used;
}
break;
default:
/* Ignore other control opcodes */
break;
}
/* The general control opcode returns no result */
goto result_not_used;
case AML_CLASS_CREATE:
/*
* These opcodes allow term_arg(s) as operands and therefore
* the operands can be method calls. The result is used.
*/
goto result_used;
case AML_CLASS_NAMED_OBJECT:
if ((op->common.parent->common.aml_opcode == AML_REGION_OP) ||
(op->common.parent->common.aml_opcode == AML_DATA_REGION_OP)
|| (op->common.parent->common.aml_opcode == AML_PACKAGE_OP)
|| (op->common.parent->common.aml_opcode == AML_BUFFER_OP)
|| (op->common.parent->common.aml_opcode ==
AML_VARIABLE_PACKAGE_OP)
|| (op->common.parent->common.aml_opcode ==
AML_INT_EVAL_SUBTREE_OP)
|| (op->common.parent->common.aml_opcode ==
AML_BANK_FIELD_OP)) {
/*
* These opcodes allow term_arg(s) as operands and therefore
* the operands can be method calls. The result is used.
*/
goto result_used;
}
goto result_not_used;
default:
/*
* In all other cases. the parent will actually use the return
* object, so keep it.
*/
goto result_used;
}
result_used:
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Result of [%s] used by Parent [%s] Op=%p\n",
acpi_ps_get_opcode_name(op->common.aml_opcode),
acpi_ps_get_opcode_name(op->common.parent->common.
aml_opcode), op));
return_UINT8(TRUE);
result_not_used:
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Result of [%s] not used by Parent [%s] Op=%p\n",
acpi_ps_get_opcode_name(op->common.aml_opcode),
acpi_ps_get_opcode_name(op->common.parent->common.
aml_opcode), op));
return_UINT8(FALSE);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_delete_result_if_not_used
*
* PARAMETERS: op - Current parse Op
* result_obj - Result of the operation
* walk_state - Current state
*
* RETURN: Status
*
* DESCRIPTION: Used after interpretation of an opcode. If there is an internal
* result descriptor, check if the parent opcode will actually use
* this result. If not, delete the result now so that it will
* not become orphaned.
*
******************************************************************************/
void
acpi_ds_delete_result_if_not_used(union acpi_parse_object *op,
union acpi_operand_object *result_obj,
struct acpi_walk_state *walk_state)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ds_delete_result_if_not_used, result_obj);
if (!op) {
ACPI_ERROR((AE_INFO, "Null Op"));
return_VOID;
}
if (!result_obj) {
return_VOID;
}
if (!acpi_ds_is_result_used(op, walk_state)) {
/* Must pop the result stack (obj_desc should be equal to result_obj) */
status = acpi_ds_result_pop(&obj_desc, walk_state);
if (ACPI_SUCCESS(status)) {
acpi_ut_remove_reference(result_obj);
}
}
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_resolve_operands
*
* PARAMETERS: walk_state - Current walk state with operands on stack
*
* RETURN: Status
*
* DESCRIPTION: Resolve all operands to their values. Used to prepare
* arguments to a control method invocation (a call from one
* method to another.)
*
******************************************************************************/
acpi_status acpi_ds_resolve_operands(struct acpi_walk_state *walk_state)
{
u32 i;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE_PTR(ds_resolve_operands, walk_state);
/*
* Attempt to resolve each of the valid operands
* Method arguments are passed by reference, not by value. This means
* that the actual objects are passed, not copies of the objects.
*/
for (i = 0; i < walk_state->num_operands; i++) {
status =
acpi_ex_resolve_to_value(&walk_state->operands[i],
walk_state);
if (ACPI_FAILURE(status)) {
break;
}
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_clear_operands
*
* PARAMETERS: walk_state - Current walk state with operands on stack
*
* RETURN: None
*
* DESCRIPTION: Clear all operands on the current walk state operand stack.
*
******************************************************************************/
void acpi_ds_clear_operands(struct acpi_walk_state *walk_state)
{
u32 i;
ACPI_FUNCTION_TRACE_PTR(ds_clear_operands, walk_state);
/* Remove a reference on each operand on the stack */
for (i = 0; i < walk_state->num_operands; i++) {
/*
* Remove a reference to all operands, including both
* "Arguments" and "Targets".
*/
acpi_ut_remove_reference(walk_state->operands[i]);
walk_state->operands[i] = NULL;
}
walk_state->num_operands = 0;
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_create_operand
*
* PARAMETERS: walk_state - Current walk state
* arg - Parse object for the argument
* arg_index - Which argument (zero based)
*
* RETURN: Status
*
* DESCRIPTION: Translate a parse tree object that is an argument to an AML
* opcode to the equivalent interpreter object. This may include
* looking up a name or entering a new name into the internal
* namespace.
*
******************************************************************************/
acpi_status
acpi_ds_create_operand(struct acpi_walk_state *walk_state,
union acpi_parse_object *arg, u32 arg_index)
{
acpi_status status = AE_OK;
char *name_string;
u32 name_length;
union acpi_operand_object *obj_desc;
union acpi_parse_object *parent_op;
u16 opcode;
acpi_interpreter_mode interpreter_mode;
const struct acpi_opcode_info *op_info;
ACPI_FUNCTION_TRACE_PTR(ds_create_operand, arg);
/* A valid name must be looked up in the namespace */
if ((arg->common.aml_opcode == AML_INT_NAMEPATH_OP) &&
(arg->common.value.string) &&
!(arg->common.flags & ACPI_PARSEOP_IN_STACK)) {
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Getting a name: Arg=%p\n",
arg));
/* Get the entire name string from the AML stream */
status = acpi_ex_get_name_string(ACPI_TYPE_ANY,
arg->common.value.buffer,
&name_string, &name_length);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* All prefixes have been handled, and the name is in name_string */
/*
* Special handling for buffer_field declarations. This is a deferred
* opcode that unfortunately defines the field name as the last
* parameter instead of the first. We get here when we are performing
* the deferred execution, so the actual name of the field is already
* in the namespace. We don't want to attempt to look it up again
* because we may be executing in a different scope than where the
* actual opcode exists.
*/
if ((walk_state->deferred_node) &&
(walk_state->deferred_node->type == ACPI_TYPE_BUFFER_FIELD)
&& (arg_index == (u32)
((walk_state->opcode == AML_CREATE_FIELD_OP) ? 3 : 2))) {
obj_desc =
ACPI_CAST_PTR(union acpi_operand_object,
walk_state->deferred_node);
status = AE_OK;
} else { /* All other opcodes */
/*
* Differentiate between a namespace "create" operation
* versus a "lookup" operation (IMODE_LOAD_PASS2 vs.
* IMODE_EXECUTE) in order to support the creation of
* namespace objects during the execution of control methods.
*/
parent_op = arg->common.parent;
op_info =
acpi_ps_get_opcode_info(parent_op->common.
aml_opcode);
if ((op_info->flags & AML_NSNODE) &&
(parent_op->common.aml_opcode !=
AML_INT_METHODCALL_OP)
&& (parent_op->common.aml_opcode != AML_REGION_OP)
&& (parent_op->common.aml_opcode !=
AML_INT_NAMEPATH_OP)) {
/* Enter name into namespace if not found */
interpreter_mode = ACPI_IMODE_LOAD_PASS2;
} else {
/* Return a failure if name not found */
interpreter_mode = ACPI_IMODE_EXECUTE;
}
status =
acpi_ns_lookup(walk_state->scope_info, name_string,
ACPI_TYPE_ANY, interpreter_mode,
ACPI_NS_SEARCH_PARENT |
ACPI_NS_DONT_OPEN_SCOPE, walk_state,
ACPI_CAST_INDIRECT_PTR(struct
acpi_namespace_node,
&obj_desc));
/*
* The only case where we pass through (ignore) a NOT_FOUND
* error is for the cond_ref_of opcode.
*/
if (status == AE_NOT_FOUND) {
if (parent_op->common.aml_opcode ==
AML_CONDITIONAL_REF_OF_OP) {
/*
* For the Conditional Reference op, it's OK if
* the name is not found; We just need a way to
* indicate this to the interpreter, set the
* object to the root
*/
obj_desc =
ACPI_CAST_PTR(union
acpi_operand_object,
acpi_gbl_root_node);
status = AE_OK;
} else if (parent_op->common.aml_opcode ==
AML_EXTERNAL_OP) {
/*
* This opcode should never appear here. It is used only
* by AML disassemblers and is surrounded by an If(0)
* by the ASL compiler.
*
* Therefore, if we see it here, it is a serious error.
*/
status = AE_AML_BAD_OPCODE;
} else {
/*
* We just plain didn't find it -- which is a
* very serious error at this point
*/
status = AE_AML_NAME_NOT_FOUND;
}
}
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
name_string, status);
}
}
/* Free the namestring created above */
ACPI_FREE(name_string);
/* Check status from the lookup */
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Put the resulting object onto the current object stack */
status = acpi_ds_obj_stack_push(obj_desc, walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
acpi_db_display_argument_object(obj_desc, walk_state);
} else {
/* Check for null name case */
if ((arg->common.aml_opcode == AML_INT_NAMEPATH_OP) &&
!(arg->common.flags & ACPI_PARSEOP_IN_STACK)) {
/*
* If the name is null, this means that this is an
* optional result parameter that was not specified
* in the original ASL. Create a Zero Constant for a
* placeholder. (Store to a constant is a Noop.)
*/
opcode = AML_ZERO_OP; /* Has no arguments! */
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Null namepath: Arg=%p\n", arg));
} else {
opcode = arg->common.aml_opcode;
}
/* Get the object type of the argument */
op_info = acpi_ps_get_opcode_info(opcode);
if (op_info->object_type == ACPI_TYPE_INVALID) {
return_ACPI_STATUS(AE_NOT_IMPLEMENTED);
}
if ((op_info->flags & AML_HAS_RETVAL) ||
(arg->common.flags & ACPI_PARSEOP_IN_STACK)) {
/*
* Use value that was already previously returned
* by the evaluation of this argument
*/
status = acpi_ds_result_pop(&obj_desc, walk_state);
if (ACPI_FAILURE(status)) {
/*
* Only error is underflow, and this indicates
* a missing or null operand!
*/
ACPI_EXCEPTION((AE_INFO, status,
"Missing or null operand"));
return_ACPI_STATUS(status);
}
} else {
/* Create an ACPI_INTERNAL_OBJECT for the argument */
obj_desc =
acpi_ut_create_internal_object(op_info->
object_type);
if (!obj_desc) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Initialize the new object */
status =
acpi_ds_init_object_from_op(walk_state, arg, opcode,
&obj_desc);
if (ACPI_FAILURE(status)) {
acpi_ut_delete_object_desc(obj_desc);
return_ACPI_STATUS(status);
}
}
/* Put the operand object on the object stack */
status = acpi_ds_obj_stack_push(obj_desc, walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
acpi_db_display_argument_object(obj_desc, walk_state);
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_create_operands
*
* PARAMETERS: walk_state - Current state
* first_arg - First argument of a parser argument tree
*
* RETURN: Status
*
* DESCRIPTION: Convert an operator's arguments from a parse tree format to
* namespace objects and place those argument object on the object
* stack in preparation for evaluation by the interpreter.
*
******************************************************************************/
acpi_status
acpi_ds_create_operands(struct acpi_walk_state *walk_state,
union acpi_parse_object *first_arg)
{
acpi_status status = AE_OK;
union acpi_parse_object *arg;
union acpi_parse_object *arguments[ACPI_OBJ_NUM_OPERANDS];
u32 arg_count = 0;
u32 index = walk_state->num_operands;
u32 i;
ACPI_FUNCTION_TRACE_PTR(ds_create_operands, first_arg);
/* Get all arguments in the list */
arg = first_arg;
while (arg) {
if (index >= ACPI_OBJ_NUM_OPERANDS) {
return_ACPI_STATUS(AE_BAD_DATA);
}
arguments[index] = arg;
walk_state->operands[index] = NULL;
/* Move on to next argument, if any */
arg = arg->common.next;
arg_count++;
index++;
}
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"NumOperands %d, ArgCount %d, Index %d\n",
walk_state->num_operands, arg_count, index));
/* Create the interpreter arguments, in reverse order */
index--;
for (i = 0; i < arg_count; i++) {
arg = arguments[index];
walk_state->operand_index = (u8)index;
status = acpi_ds_create_operand(walk_state, arg, index);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Created Arg #%u (%p) %u args total\n",
index, arg, arg_count));
index--;
}
return_ACPI_STATUS(status);
cleanup:
/*
* We must undo everything done above; meaning that we must
* pop everything off of the operand stack and delete those
* objects
*/
acpi_ds_obj_stack_pop_and_delete(arg_count, walk_state);
ACPI_EXCEPTION((AE_INFO, status, "While creating Arg %u", index));
return_ACPI_STATUS(status);
}
/*****************************************************************************
*
* FUNCTION: acpi_ds_evaluate_name_path
*
* PARAMETERS: walk_state - Current state of the parse tree walk,
* the opcode of current operation should be
* AML_INT_NAMEPATH_OP
*
* RETURN: Status
*
* DESCRIPTION: Translate the -name_path- parse tree object to the equivalent
* interpreter object, convert it to value, if needed, duplicate
* it, if needed, and push it onto the current result stack.
*
****************************************************************************/
acpi_status acpi_ds_evaluate_name_path(struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
union acpi_parse_object *op = walk_state->op;
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *new_obj_desc;
u8 type;
ACPI_FUNCTION_TRACE_PTR(ds_evaluate_name_path, walk_state);
if (!op->common.parent) {
/* This happens after certain exception processing */
goto exit;
}
if ((op->common.parent->common.aml_opcode == AML_PACKAGE_OP) ||
(op->common.parent->common.aml_opcode == AML_VARIABLE_PACKAGE_OP) ||
(op->common.parent->common.aml_opcode == AML_REF_OF_OP)) {
/* TBD: Should we specify this feature as a bit of op_info->Flags of these opcodes? */
goto exit;
}
status = acpi_ds_create_operand(walk_state, op, 0);
if (ACPI_FAILURE(status)) {
goto exit;
}
if (op->common.flags & ACPI_PARSEOP_TARGET) {
new_obj_desc = *operand;
goto push_result;
}
type = (*operand)->common.type;
status = acpi_ex_resolve_to_value(operand, walk_state);
if (ACPI_FAILURE(status)) {
goto exit;
}
if (type == ACPI_TYPE_INTEGER) {
/* It was incremented by acpi_ex_resolve_to_value */
acpi_ut_remove_reference(*operand);
status =
acpi_ut_copy_iobject_to_iobject(*operand, &new_obj_desc,
walk_state);
if (ACPI_FAILURE(status)) {
goto exit;
}
} else {
/*
* The object either was anew created or is
* a Namespace node - don't decrement it.
*/
new_obj_desc = *operand;
}
/* Cleanup for name-path operand */
status = acpi_ds_obj_stack_pop(1, walk_state);
if (ACPI_FAILURE(status)) {
walk_state->result_obj = new_obj_desc;
goto exit;
}
push_result:
walk_state->result_obj = new_obj_desc;
status = acpi_ds_result_push(walk_state->result_obj, walk_state);
if (ACPI_SUCCESS(status)) {
/* Force to take it from stack */
op->common.flags |= ACPI_PARSEOP_IN_STACK;
}
exit:
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/dsutils.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: evhandler - Support for Address Space handlers
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acevents.h"
#include "acnamesp.h"
#include "acinterp.h"
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evhandler")
/* Local prototypes */
static acpi_status
acpi_ev_install_handler(acpi_handle obj_handle,
u32 level, void *context, void **return_value);
/* These are the address spaces that will get default handlers */
u8 acpi_gbl_default_address_spaces[ACPI_NUM_DEFAULT_SPACES] = {
ACPI_ADR_SPACE_SYSTEM_MEMORY,
ACPI_ADR_SPACE_SYSTEM_IO,
ACPI_ADR_SPACE_PCI_CONFIG,
ACPI_ADR_SPACE_DATA_TABLE
};
/*******************************************************************************
*
* FUNCTION: acpi_ev_install_region_handlers
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Installs the core subsystem default address space handlers.
*
******************************************************************************/
acpi_status acpi_ev_install_region_handlers(void)
{
acpi_status status;
u32 i;
ACPI_FUNCTION_TRACE(ev_install_region_handlers);
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* All address spaces (PCI Config, EC, SMBus) are scope dependent and
* registration must occur for a specific device.
*
* In the case of the system memory and IO address spaces there is
* currently no device associated with the address space. For these we
* use the root.
*
* We install the default PCI config space handler at the root so that
* this space is immediately available even though the we have not
* enumerated all the PCI Root Buses yet. This is to conform to the ACPI
* specification which states that the PCI config space must be always
* available -- even though we are nowhere near ready to find the PCI root
* buses at this point.
*
* NOTE: We ignore AE_ALREADY_EXISTS because this means that a handler
* has already been installed (via acpi_install_address_space_handler).
* Similar for AE_SAME_HANDLER.
*/
for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) {
status = acpi_ev_install_space_handler(acpi_gbl_root_node,
acpi_gbl_default_address_spaces
[i],
ACPI_DEFAULT_HANDLER,
NULL, NULL);
switch (status) {
case AE_OK:
case AE_SAME_HANDLER:
case AE_ALREADY_EXISTS:
/* These exceptions are all OK */
status = AE_OK;
break;
default:
goto unlock_and_exit;
}
}
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_has_default_handler
*
* PARAMETERS: node - Namespace node for the device
* space_id - The address space ID
*
* RETURN: TRUE if default handler is installed, FALSE otherwise
*
* DESCRIPTION: Check if the default handler is installed for the requested
* space ID.
*
******************************************************************************/
u8
acpi_ev_has_default_handler(struct acpi_namespace_node *node,
acpi_adr_space_type space_id)
{
union acpi_operand_object *obj_desc;
union acpi_operand_object *handler_obj;
/* Must have an existing internal object */
obj_desc = acpi_ns_get_attached_object(node);
if (obj_desc) {
handler_obj = obj_desc->common_notify.handler;
/* Walk the linked list of handlers for this object */
while (handler_obj) {
if (handler_obj->address_space.space_id == space_id) {
if (handler_obj->address_space.handler_flags &
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) {
return (TRUE);
}
}
handler_obj = handler_obj->address_space.next;
}
}
return (FALSE);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_install_handler
*
* PARAMETERS: walk_namespace callback
*
* DESCRIPTION: This routine installs an address handler into objects that are
* of type Region or Device.
*
* If the Object is a Device, and the device has a handler of
* the same type then the search is terminated in that branch.
*
* This is because the existing handler is closer in proximity
* to any more regions than the one we are trying to install.
*
******************************************************************************/
static acpi_status
acpi_ev_install_handler(acpi_handle obj_handle,
u32 level, void *context, void **return_value)
{
union acpi_operand_object *handler_obj;
union acpi_operand_object *next_handler_obj;
union acpi_operand_object *obj_desc;
struct acpi_namespace_node *node;
acpi_status status;
ACPI_FUNCTION_NAME(ev_install_handler);
handler_obj = (union acpi_operand_object *)context;
/* Parameter validation */
if (!handler_obj) {
return (AE_OK);
}
/* Convert and validate the device handle */
node = acpi_ns_validate_handle(obj_handle);
if (!node) {
return (AE_BAD_PARAMETER);
}
/*
* We only care about regions and objects that are allowed to have
* address space handlers
*/
if ((node->type != ACPI_TYPE_DEVICE) &&
(node->type != ACPI_TYPE_REGION) && (node != acpi_gbl_root_node)) {
return (AE_OK);
}
/* Check for an existing internal object */
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
/* No object, just exit */
return (AE_OK);
}
/* Devices are handled different than regions */
if (obj_desc->common.type == ACPI_TYPE_DEVICE) {
/* Check if this Device already has a handler for this address space */
next_handler_obj =
acpi_ev_find_region_handler(handler_obj->address_space.
space_id,
obj_desc->common_notify.
handler);
if (next_handler_obj) {
/* Found a handler, is it for the same address space? */
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Found handler for region [%s] in device %p(%p) handler %p\n",
acpi_ut_get_region_name(handler_obj->
address_space.
space_id),
obj_desc, next_handler_obj,
handler_obj));
/*
* Since the object we found it on was a device, then it means
* that someone has already installed a handler for the branch
* of the namespace from this device on. Just bail out telling
* the walk routine to not traverse this branch. This preserves
* the scoping rule for handlers.
*/
return (AE_CTRL_DEPTH);
}
/*
* As long as the device didn't have a handler for this space we
* don't care about it. We just ignore it and proceed.
*/
return (AE_OK);
}
/* Object is a Region */
if (obj_desc->region.space_id != handler_obj->address_space.space_id) {
/* This region is for a different address space, just ignore it */
return (AE_OK);
}
/*
* Now we have a region and it is for the handler's address space type.
*
* First disconnect region for any previous handler (if any)
*/
acpi_ev_detach_region(obj_desc, FALSE);
/* Connect the region to the new handler */
status = acpi_ev_attach_region(handler_obj, obj_desc, FALSE);
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_find_region_handler
*
* PARAMETERS: space_id - The address space ID
* handler_obj - Head of the handler object list
*
* RETURN: Matching handler object. NULL if space ID not matched
*
* DESCRIPTION: Search a handler object list for a match on the address
* space ID.
*
******************************************************************************/
union acpi_operand_object *acpi_ev_find_region_handler(acpi_adr_space_type
space_id,
union acpi_operand_object
*handler_obj)
{
/* Walk the handler list for this device */
while (handler_obj) {
/* Same space_id indicates a handler is installed */
if (handler_obj->address_space.space_id == space_id) {
return (handler_obj);
}
/* Next handler object */
handler_obj = handler_obj->address_space.next;
}
return (NULL);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_install_space_handler
*
* PARAMETERS: node - Namespace node for the device
* space_id - The address space ID
* handler - Address of the handler
* setup - Address of the setup function
* context - Value passed to the handler on each access
*
* RETURN: Status
*
* DESCRIPTION: Install a handler for all op_regions of a given space_id.
* Assumes namespace is locked
*
******************************************************************************/
acpi_status
acpi_ev_install_space_handler(struct acpi_namespace_node *node,
acpi_adr_space_type space_id,
acpi_adr_space_handler handler,
acpi_adr_space_setup setup, void *context)
{
union acpi_operand_object *obj_desc;
union acpi_operand_object *handler_obj;
acpi_status status = AE_OK;
acpi_object_type type;
u8 flags = 0;
ACPI_FUNCTION_TRACE(ev_install_space_handler);
/*
* This registration is valid for only the types below and the root.
* The root node is where the default handlers get installed.
*/
if ((node->type != ACPI_TYPE_DEVICE) &&
(node->type != ACPI_TYPE_PROCESSOR) &&
(node->type != ACPI_TYPE_THERMAL) && (node != acpi_gbl_root_node)) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
if (handler == ACPI_DEFAULT_HANDLER) {
flags = ACPI_ADDR_HANDLER_DEFAULT_INSTALLED;
switch (space_id) {
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
handler = acpi_ex_system_memory_space_handler;
setup = acpi_ev_system_memory_region_setup;
break;
case ACPI_ADR_SPACE_SYSTEM_IO:
handler = acpi_ex_system_io_space_handler;
setup = acpi_ev_io_space_region_setup;
break;
#ifdef ACPI_PCI_CONFIGURED
case ACPI_ADR_SPACE_PCI_CONFIG:
handler = acpi_ex_pci_config_space_handler;
setup = acpi_ev_pci_config_region_setup;
break;
#endif
case ACPI_ADR_SPACE_CMOS:
handler = acpi_ex_cmos_space_handler;
setup = acpi_ev_cmos_region_setup;
break;
#ifdef ACPI_PCI_CONFIGURED
case ACPI_ADR_SPACE_PCI_BAR_TARGET:
handler = acpi_ex_pci_bar_space_handler;
setup = acpi_ev_pci_bar_region_setup;
break;
#endif
case ACPI_ADR_SPACE_DATA_TABLE:
handler = acpi_ex_data_table_space_handler;
setup = acpi_ev_data_table_region_setup;
break;
default:
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
}
/* If the caller hasn't specified a setup routine, use the default */
if (!setup) {
setup = acpi_ev_default_region_setup;
}
/* Check for an existing internal object */
obj_desc = acpi_ns_get_attached_object(node);
if (obj_desc) {
/*
* The attached device object already exists. Now make sure
* the handler is not already installed.
*/
handler_obj = acpi_ev_find_region_handler(space_id,
obj_desc->
common_notify.
handler);
if (handler_obj) {
if (handler_obj->address_space.handler == handler) {
/*
* It is (relatively) OK to attempt to install the SAME
* handler twice. This can easily happen with the
* PCI_Config space.
*/
status = AE_SAME_HANDLER;
goto unlock_and_exit;
} else {
/* A handler is already installed */
status = AE_ALREADY_EXISTS;
}
goto unlock_and_exit;
}
} else {
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Creating object on Device %p while installing handler\n",
node));
/* obj_desc does not exist, create one */
if (node->type == ACPI_TYPE_ANY) {
type = ACPI_TYPE_DEVICE;
} else {
type = node->type;
}
obj_desc = acpi_ut_create_internal_object(type);
if (!obj_desc) {
status = AE_NO_MEMORY;
goto unlock_and_exit;
}
/* Init new descriptor */
obj_desc->common.type = (u8)type;
/* Attach the new object to the Node */
status = acpi_ns_attach_object(node, obj_desc, type);
/* Remove local reference to the object */
acpi_ut_remove_reference(obj_desc);
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
}
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Installing address handler for region %s(%X) "
"on Device %4.4s %p(%p)\n",
acpi_ut_get_region_name(space_id), space_id,
acpi_ut_get_node_name(node), node, obj_desc));
/*
* Install the handler
*
* At this point there is no existing handler. Just allocate the object
* for the handler and link it into the list.
*/
handler_obj =
acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_ADDRESS_HANDLER);
if (!handler_obj) {
status = AE_NO_MEMORY;
goto unlock_and_exit;
}
/* Init handler obj */
status =
acpi_os_create_mutex(&handler_obj->address_space.context_mutex);
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference(handler_obj);
goto unlock_and_exit;
}
handler_obj->address_space.space_id = (u8)space_id;
handler_obj->address_space.handler_flags = flags;
handler_obj->address_space.region_list = NULL;
handler_obj->address_space.node = node;
handler_obj->address_space.handler = handler;
handler_obj->address_space.context = context;
handler_obj->address_space.setup = setup;
/* Install at head of Device.address_space list */
handler_obj->address_space.next = obj_desc->common_notify.handler;
/*
* The Device object is the first reference on the handler_obj.
* Each region that uses the handler adds a reference.
*/
obj_desc->common_notify.handler = handler_obj;
/*
* Walk the namespace finding all of the regions this handler will
* manage.
*
* Start at the device and search the branch toward the leaf nodes
* until either the leaf is encountered or a device is detected that
* has an address handler of the same type.
*
* In either case, back up and search down the remainder of the branch
*/
status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, node,
ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK,
acpi_ev_install_handler, NULL,
handler_obj, NULL);
unlock_and_exit:
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/evhandler.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: nsxfname - Public interfaces to the ACPI subsystem
* ACPI Namespace oriented interfaces
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#define EXPORT_ACPI_INTERFACES
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acparser.h"
#include "amlcode.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsxfname")
/* Local prototypes */
static char *acpi_ns_copy_device_id(struct acpi_pnp_device_id *dest,
struct acpi_pnp_device_id *source,
char *string_area);
/******************************************************************************
*
* FUNCTION: acpi_get_handle
*
* PARAMETERS: parent - Object to search under (search scope).
* pathname - Pointer to an asciiz string containing the
* name
* ret_handle - Where the return handle is returned
*
* RETURN: Status
*
* DESCRIPTION: This routine will search for a caller specified name in the
* name space. The caller can restrict the search region by
* specifying a non NULL parent. The parent value is itself a
* namespace handle.
*
******************************************************************************/
acpi_status
acpi_get_handle(acpi_handle parent,
const char *pathname, acpi_handle *ret_handle)
{
acpi_status status;
struct acpi_namespace_node *node = NULL;
struct acpi_namespace_node *prefix_node = NULL;
ACPI_FUNCTION_ENTRY();
/* Parameter Validation */
if (!ret_handle || !pathname) {
return (AE_BAD_PARAMETER);
}
/* Convert a parent handle to a prefix node */
if (parent) {
prefix_node = acpi_ns_validate_handle(parent);
if (!prefix_node) {
return (AE_BAD_PARAMETER);
}
}
/*
* Valid cases are:
* 1) Fully qualified pathname
* 2) Parent + Relative pathname
*
* Error for <null Parent + relative path>
*/
if (ACPI_IS_ROOT_PREFIX(pathname[0])) {
/* Pathname is fully qualified (starts with '\') */
/* Special case for root-only, since we can't search for it */
if (!strcmp(pathname, ACPI_NS_ROOT_PATH)) {
*ret_handle =
ACPI_CAST_PTR(acpi_handle, acpi_gbl_root_node);
return (AE_OK);
}
} else if (!prefix_node) {
/* Relative path with null prefix is disallowed */
return (AE_BAD_PARAMETER);
}
/* Find the Node and convert to a handle */
status =
acpi_ns_get_node(prefix_node, pathname, ACPI_NS_NO_UPSEARCH, &node);
if (ACPI_SUCCESS(status)) {
*ret_handle = ACPI_CAST_PTR(acpi_handle, node);
}
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_get_handle)
/******************************************************************************
*
* FUNCTION: acpi_get_name
*
* PARAMETERS: handle - Handle to be converted to a pathname
* name_type - Full pathname or single segment
* buffer - Buffer for returned path
*
* RETURN: Pointer to a string containing the fully qualified Name.
*
* DESCRIPTION: This routine returns the fully qualified name associated with
* the Handle parameter. This and the acpi_pathname_to_handle are
* complementary functions.
*
******************************************************************************/
acpi_status
acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer *buffer)
{
acpi_status status;
/* Parameter validation */
if (name_type > ACPI_NAME_TYPE_MAX) {
return (AE_BAD_PARAMETER);
}
status = acpi_ut_validate_buffer(buffer);
if (ACPI_FAILURE(status)) {
return (status);
}
/*
* Wants the single segment ACPI name.
* Validate handle and convert to a namespace Node
*/
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return (status);
}
if (name_type == ACPI_FULL_PATHNAME ||
name_type == ACPI_FULL_PATHNAME_NO_TRAILING) {
/* Get the full pathname (From the namespace root) */
status = acpi_ns_handle_to_pathname(handle, buffer,
name_type ==
ACPI_FULL_PATHNAME ? FALSE :
TRUE);
} else {
/* Get the single name */
status = acpi_ns_handle_to_name(handle, buffer);
}
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_get_name)
/******************************************************************************
*
* FUNCTION: acpi_ns_copy_device_id
*
* PARAMETERS: dest - Pointer to the destination PNP_DEVICE_ID
* source - Pointer to the source PNP_DEVICE_ID
* string_area - Pointer to where to copy the dest string
*
* RETURN: Pointer to the next string area
*
* DESCRIPTION: Copy a single PNP_DEVICE_ID, including the string data.
*
******************************************************************************/
static char *acpi_ns_copy_device_id(struct acpi_pnp_device_id *dest,
struct acpi_pnp_device_id *source,
char *string_area)
{
/* Create the destination PNP_DEVICE_ID */
dest->string = string_area;
dest->length = source->length;
/* Copy actual string and return a pointer to the next string area */
memcpy(string_area, source->string, source->length);
return (string_area + source->length);
}
/******************************************************************************
*
* FUNCTION: acpi_get_object_info
*
* PARAMETERS: handle - Object Handle
* return_buffer - Where the info is returned
*
* RETURN: Status
*
* DESCRIPTION: Returns information about an object as gleaned from the
* namespace node and possibly by running several standard
* control methods (Such as in the case of a device.)
*
* For Device and Processor objects, run the Device _HID, _UID, _CID,
* _CLS, _ADR, _sx_w, and _sx_d methods.
*
* Note: Allocates the return buffer, must be freed by the caller.
*
* Note: This interface is intended to be used during the initial device
* discovery namespace traversal. Therefore, no complex methods can be
* executed, especially those that access operation regions. Therefore, do
* not add any additional methods that could cause problems in this area.
* Because of this reason support for the following methods has been removed:
* 1) _SUB method was removed (11/2015)
* 2) _STA method was removed (02/2018)
*
******************************************************************************/
acpi_status
acpi_get_object_info(acpi_handle handle,
struct acpi_device_info **return_buffer)
{
struct acpi_namespace_node *node;
struct acpi_device_info *info;
struct acpi_pnp_device_id_list *cid_list = NULL;
struct acpi_pnp_device_id *hid = NULL;
struct acpi_pnp_device_id *uid = NULL;
struct acpi_pnp_device_id *cls = NULL;
char *next_id_string;
acpi_object_type type;
acpi_name name;
u8 param_count = 0;
u16 valid = 0;
u32 info_size;
u32 i;
acpi_status status;
/* Parameter validation */
if (!handle || !return_buffer) {
return (AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return (status);
}
node = acpi_ns_validate_handle(handle);
if (!node) {
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (AE_BAD_PARAMETER);
}
/* Get the namespace node data while the namespace is locked */
info_size = sizeof(struct acpi_device_info);
type = node->type;
name = node->name.integer;
if (node->type == ACPI_TYPE_METHOD) {
param_count = node->object->method.param_count;
}
status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return (status);
}
if ((type == ACPI_TYPE_DEVICE) || (type == ACPI_TYPE_PROCESSOR)) {
/*
* Get extra info for ACPI Device/Processor objects only:
* Run the Device _HID, _UID, _CLS, and _CID methods.
*
* Note: none of these methods are required, so they may or may
* not be present for this device. The Info->Valid bitfield is used
* to indicate which methods were found and run successfully.
*/
/* Execute the Device._HID method */
status = acpi_ut_execute_HID(node, &hid);
if (ACPI_SUCCESS(status)) {
info_size += hid->length;
valid |= ACPI_VALID_HID;
}
/* Execute the Device._UID method */
status = acpi_ut_execute_UID(node, &uid);
if (ACPI_SUCCESS(status)) {
info_size += uid->length;
valid |= ACPI_VALID_UID;
}
/* Execute the Device._CID method */
status = acpi_ut_execute_CID(node, &cid_list);
if (ACPI_SUCCESS(status)) {
/* Add size of CID strings and CID pointer array */
info_size +=
(cid_list->list_size -
sizeof(struct acpi_pnp_device_id_list));
valid |= ACPI_VALID_CID;
}
/* Execute the Device._CLS method */
status = acpi_ut_execute_CLS(node, &cls);
if (ACPI_SUCCESS(status)) {
info_size += cls->length;
valid |= ACPI_VALID_CLS;
}
}
/*
* Now that we have the variable-length data, we can allocate the
* return buffer
*/
info = ACPI_ALLOCATE_ZEROED(info_size);
if (!info) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Get the fixed-length data */
if ((type == ACPI_TYPE_DEVICE) || (type == ACPI_TYPE_PROCESSOR)) {
/*
* Get extra info for ACPI Device/Processor objects only:
* Run the _ADR and, sx_w, and _sx_d methods.
*
* Notes: none of these methods are required, so they may or may
* not be present for this device. The Info->Valid bitfield is used
* to indicate which methods were found and run successfully.
*/
/* Execute the Device._ADR method */
status = acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR, node,
&info->address);
if (ACPI_SUCCESS(status)) {
valid |= ACPI_VALID_ADR;
}
/* Execute the Device._sx_w methods */
status = acpi_ut_execute_power_methods(node,
acpi_gbl_lowest_dstate_names,
ACPI_NUM_sx_w_METHODS,
info->lowest_dstates);
if (ACPI_SUCCESS(status)) {
valid |= ACPI_VALID_SXWS;
}
/* Execute the Device._sx_d methods */
status = acpi_ut_execute_power_methods(node,
acpi_gbl_highest_dstate_names,
ACPI_NUM_sx_d_METHODS,
info->highest_dstates);
if (ACPI_SUCCESS(status)) {
valid |= ACPI_VALID_SXDS;
}
}
/*
* Create a pointer to the string area of the return buffer.
* Point to the end of the base struct acpi_device_info structure.
*/
next_id_string = ACPI_CAST_PTR(char, info->compatible_id_list.ids);
if (cid_list) {
/* Point past the CID PNP_DEVICE_ID array */
next_id_string +=
((acpi_size)cid_list->count *
sizeof(struct acpi_pnp_device_id));
}
/*
* Copy the HID, UID, and CIDs to the return buffer. The variable-length
* strings are copied to the reserved area at the end of the buffer.
*
* For HID and CID, check if the ID is a PCI Root Bridge.
*/
if (hid) {
next_id_string = acpi_ns_copy_device_id(&info->hardware_id,
hid, next_id_string);
if (acpi_ut_is_pci_root_bridge(hid->string)) {
info->flags |= ACPI_PCI_ROOT_BRIDGE;
}
}
if (uid) {
next_id_string = acpi_ns_copy_device_id(&info->unique_id,
uid, next_id_string);
}
if (cid_list) {
info->compatible_id_list.count = cid_list->count;
info->compatible_id_list.list_size = cid_list->list_size;
/* Copy each CID */
for (i = 0; i < cid_list->count; i++) {
next_id_string =
acpi_ns_copy_device_id(&info->compatible_id_list.
ids[i], &cid_list->ids[i],
next_id_string);
if (acpi_ut_is_pci_root_bridge(cid_list->ids[i].string)) {
info->flags |= ACPI_PCI_ROOT_BRIDGE;
}
}
}
if (cls) {
(void)acpi_ns_copy_device_id(&info->class_code,
cls, next_id_string);
}
/* Copy the fixed-length data */
info->info_size = info_size;
info->type = type;
info->name = name;
info->param_count = param_count;
info->valid = valid;
*return_buffer = info;
status = AE_OK;
cleanup:
if (hid) {
ACPI_FREE(hid);
}
if (uid) {
ACPI_FREE(uid);
}
if (cid_list) {
ACPI_FREE(cid_list);
}
if (cls) {
ACPI_FREE(cls);
}
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_get_object_info)
/******************************************************************************
*
* FUNCTION: acpi_install_method
*
* PARAMETERS: buffer - An ACPI table containing one control method
*
* RETURN: Status
*
* DESCRIPTION: Install a control method into the namespace. If the method
* name already exists in the namespace, it is overwritten. The
* input buffer must contain a valid DSDT or SSDT containing a
* single control method.
*
******************************************************************************/
acpi_status acpi_install_method(u8 *buffer)
{
struct acpi_table_header *table =
ACPI_CAST_PTR(struct acpi_table_header, buffer);
u8 *aml_buffer;
u8 *aml_start;
char *path;
struct acpi_namespace_node *node;
union acpi_operand_object *method_obj;
struct acpi_parse_state parser_state;
u32 aml_length;
u16 opcode;
u8 method_flags;
acpi_status status;
/* Parameter validation */
if (!buffer) {
return (AE_BAD_PARAMETER);
}
/* Table must be a DSDT or SSDT */
if (!ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_DSDT) &&
!ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_SSDT)) {
return (AE_BAD_HEADER);
}
/* First AML opcode in the table must be a control method */
parser_state.aml = buffer + sizeof(struct acpi_table_header);
opcode = acpi_ps_peek_opcode(&parser_state);
if (opcode != AML_METHOD_OP) {
return (AE_BAD_PARAMETER);
}
/* Extract method information from the raw AML */
parser_state.aml += acpi_ps_get_opcode_size(opcode);
parser_state.pkg_end = acpi_ps_get_next_package_end(&parser_state);
path = acpi_ps_get_next_namestring(&parser_state);
method_flags = *parser_state.aml++;
aml_start = parser_state.aml;
aml_length = (u32)ACPI_PTR_DIFF(parser_state.pkg_end, aml_start);
/*
* Allocate resources up-front. We don't want to have to delete a new
* node from the namespace if we cannot allocate memory.
*/
aml_buffer = ACPI_ALLOCATE(aml_length);
if (!aml_buffer) {
return (AE_NO_MEMORY);
}
method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
if (!method_obj) {
ACPI_FREE(aml_buffer);
return (AE_NO_MEMORY);
}
/* Lock namespace for acpi_ns_lookup, we may be creating a new node */
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
/* The lookup either returns an existing node or creates a new one */
status =
acpi_ns_lookup(NULL, path, ACPI_TYPE_METHOD, ACPI_IMODE_LOAD_PASS1,
ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND,
NULL, &node);
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) { /* ns_lookup */
if (status != AE_ALREADY_EXISTS) {
goto error_exit;
}
/* Node existed previously, make sure it is a method node */
if (node->type != ACPI_TYPE_METHOD) {
status = AE_TYPE;
goto error_exit;
}
}
/* Copy the method AML to the local buffer */
memcpy(aml_buffer, aml_start, aml_length);
/* Initialize the method object with the new method's information */
method_obj->method.aml_start = aml_buffer;
method_obj->method.aml_length = aml_length;
method_obj->method.param_count = (u8)
(method_flags & AML_METHOD_ARG_COUNT);
if (method_flags & AML_METHOD_SERIALIZED) {
method_obj->method.info_flags = ACPI_METHOD_SERIALIZED;
method_obj->method.sync_level = (u8)
((method_flags & AML_METHOD_SYNC_LEVEL) >> 4);
}
/*
* Now that it is complete, we can attach the new method object to
* the method Node (detaches/deletes any existing object)
*/
status = acpi_ns_attach_object(node, method_obj, ACPI_TYPE_METHOD);
/*
* Flag indicates AML buffer is dynamic, must be deleted later.
* Must be set only after attach above.
*/
node->flags |= ANOBJ_ALLOCATED_BUFFER;
/* Remove local reference to the method object */
acpi_ut_remove_reference(method_obj);
return (status);
error_exit:
ACPI_FREE(aml_buffer);
ACPI_FREE(method_obj);
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_install_method)
| linux-master | drivers/acpi/acpica/nsxfname.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: rscalc - Calculate stream and list lengths
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acresrc.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME("rscalc")
/* Local prototypes */
static u8 acpi_rs_count_set_bits(u16 bit_field);
static acpi_rs_length
acpi_rs_struct_option_length(struct acpi_resource_source *resource_source);
static u32
acpi_rs_stream_option_length(u32 resource_length, u32 minimum_total_length);
/*******************************************************************************
*
* FUNCTION: acpi_rs_count_set_bits
*
* PARAMETERS: bit_field - Field in which to count bits
*
* RETURN: Number of bits set within the field
*
* DESCRIPTION: Count the number of bits set in a resource field. Used for
* (Short descriptor) interrupt and DMA lists.
*
******************************************************************************/
static u8 acpi_rs_count_set_bits(u16 bit_field)
{
u8 bits_set;
ACPI_FUNCTION_ENTRY();
for (bits_set = 0; bit_field; bits_set++) {
/* Zero the least significant bit that is set */
bit_field &= (u16) (bit_field - 1);
}
return (bits_set);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_struct_option_length
*
* PARAMETERS: resource_source - Pointer to optional descriptor field
*
* RETURN: Status
*
* DESCRIPTION: Common code to handle optional resource_source_index and
* resource_source fields in some Large descriptors. Used during
* list-to-stream conversion
*
******************************************************************************/
static acpi_rs_length
acpi_rs_struct_option_length(struct acpi_resource_source *resource_source)
{
ACPI_FUNCTION_ENTRY();
/*
* If the resource_source string is valid, return the size of the string
* (string_length includes the NULL terminator) plus the size of the
* resource_source_index (1).
*/
if (resource_source->string_ptr) {
return ((acpi_rs_length)(resource_source->string_length + 1));
}
return (0);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_stream_option_length
*
* PARAMETERS: resource_length - Length from the resource header
* minimum_total_length - Minimum length of this resource, before
* any optional fields. Includes header size
*
* RETURN: Length of optional string (0 if no string present)
*
* DESCRIPTION: Common code to handle optional resource_source_index and
* resource_source fields in some Large descriptors. Used during
* stream-to-list conversion
*
******************************************************************************/
static u32
acpi_rs_stream_option_length(u32 resource_length,
u32 minimum_aml_resource_length)
{
u32 string_length = 0;
ACPI_FUNCTION_ENTRY();
/*
* The resource_source_index and resource_source are optional elements of
* some Large-type resource descriptors.
*/
/*
* If the length of the actual resource descriptor is greater than the
* ACPI spec-defined minimum length, it means that a resource_source_index
* exists and is followed by a (required) null terminated string. The
* string length (including the null terminator) is the resource length
* minus the minimum length, minus one byte for the resource_source_index
* itself.
*/
if (resource_length > minimum_aml_resource_length) {
/* Compute the length of the optional string */
string_length =
resource_length - minimum_aml_resource_length - 1;
}
/*
* Round the length up to a multiple of the native word in order to
* guarantee that the entire resource descriptor is native word aligned
*/
return ((u32) ACPI_ROUND_UP_TO_NATIVE_WORD(string_length));
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_aml_length
*
* PARAMETERS: resource - Pointer to the resource linked list
* resource_list_size - Size of the resource linked list
* size_needed - Where the required size is returned
*
* RETURN: Status
*
* DESCRIPTION: Takes a linked list of internal resource descriptors and
* calculates the size buffer needed to hold the corresponding
* external resource byte stream.
*
******************************************************************************/
acpi_status
acpi_rs_get_aml_length(struct acpi_resource *resource,
acpi_size resource_list_size, acpi_size *size_needed)
{
acpi_size aml_size_needed = 0;
struct acpi_resource *resource_end;
acpi_rs_length total_size;
ACPI_FUNCTION_TRACE(rs_get_aml_length);
/* Traverse entire list of internal resource descriptors */
resource_end =
ACPI_ADD_PTR(struct acpi_resource, resource, resource_list_size);
while (resource < resource_end) {
/* Validate the descriptor type */
if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
}
/* Sanity check the length. It must not be zero, or we loop forever */
if (!resource->length) {
return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
}
/* Get the base size of the (external stream) resource descriptor */
total_size = acpi_gbl_aml_resource_sizes[resource->type];
/*
* Augment the base size for descriptors with optional and/or
* variable-length fields
*/
switch (resource->type) {
case ACPI_RESOURCE_TYPE_IRQ:
/* Length can be 3 or 2 */
if (resource->data.irq.descriptor_length == 2) {
total_size--;
}
break;
case ACPI_RESOURCE_TYPE_START_DEPENDENT:
/* Length can be 1 or 0 */
if (resource->data.irq.descriptor_length == 0) {
total_size--;
}
break;
case ACPI_RESOURCE_TYPE_VENDOR:
/*
* Vendor Defined Resource:
* For a Vendor Specific resource, if the Length is between 1 and 7
* it will be created as a Small Resource data type, otherwise it
* is a Large Resource data type.
*/
if (resource->data.vendor.byte_length > 7) {
/* Base size of a Large resource descriptor */
total_size =
sizeof(struct aml_resource_large_header);
}
/* Add the size of the vendor-specific data */
total_size = (acpi_rs_length)
(total_size + resource->data.vendor.byte_length);
break;
case ACPI_RESOURCE_TYPE_END_TAG:
/*
* End Tag:
* We are done -- return the accumulated total size.
*/
*size_needed = aml_size_needed + total_size;
/* Normal exit */
return_ACPI_STATUS(AE_OK);
case ACPI_RESOURCE_TYPE_ADDRESS16:
/*
* 16-Bit Address Resource:
* Add the size of the optional resource_source info
*/
total_size = (acpi_rs_length)(total_size +
acpi_rs_struct_option_length
(&resource->data.
address16.
resource_source));
break;
case ACPI_RESOURCE_TYPE_ADDRESS32:
/*
* 32-Bit Address Resource:
* Add the size of the optional resource_source info
*/
total_size = (acpi_rs_length)(total_size +
acpi_rs_struct_option_length
(&resource->data.
address32.
resource_source));
break;
case ACPI_RESOURCE_TYPE_ADDRESS64:
/*
* 64-Bit Address Resource:
* Add the size of the optional resource_source info
*/
total_size = (acpi_rs_length)(total_size +
acpi_rs_struct_option_length
(&resource->data.
address64.
resource_source));
break;
case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
/*
* Extended IRQ Resource:
* Add the size of each additional optional interrupt beyond the
* required 1 (4 bytes for each u32 interrupt number)
*/
total_size = (acpi_rs_length)(total_size +
((resource->data.
extended_irq.
interrupt_count -
1) * 4) +
/* Add the size of the optional resource_source info */
acpi_rs_struct_option_length
(&resource->data.
extended_irq.
resource_source));
break;
case ACPI_RESOURCE_TYPE_GPIO:
total_size = (acpi_rs_length)(total_size +
(resource->data.gpio.
pin_table_length * 2) +
resource->data.gpio.
resource_source.
string_length +
resource->data.gpio.
vendor_length);
break;
case ACPI_RESOURCE_TYPE_PIN_FUNCTION:
total_size = (acpi_rs_length)(total_size +
(resource->data.
pin_function.
pin_table_length * 2) +
resource->data.
pin_function.
resource_source.
string_length +
resource->data.
pin_function.
vendor_length);
break;
case ACPI_RESOURCE_TYPE_CLOCK_INPUT:
total_size = (acpi_rs_length)(total_size +
resource->data.
clock_input.
resource_source.
string_length);
break;
case ACPI_RESOURCE_TYPE_SERIAL_BUS:
total_size =
acpi_gbl_aml_resource_serial_bus_sizes[resource->
data.
common_serial_bus.
type];
total_size = (acpi_rs_length)(total_size +
resource->data.
i2c_serial_bus.
resource_source.
string_length +
resource->data.
i2c_serial_bus.
vendor_length);
break;
case ACPI_RESOURCE_TYPE_PIN_CONFIG:
total_size = (acpi_rs_length)(total_size +
(resource->data.
pin_config.
pin_table_length * 2) +
resource->data.pin_config.
resource_source.
string_length +
resource->data.pin_config.
vendor_length);
break;
case ACPI_RESOURCE_TYPE_PIN_GROUP:
total_size = (acpi_rs_length)(total_size +
(resource->data.pin_group.
pin_table_length * 2) +
resource->data.pin_group.
resource_label.
string_length +
resource->data.pin_group.
vendor_length);
break;
case ACPI_RESOURCE_TYPE_PIN_GROUP_FUNCTION:
total_size = (acpi_rs_length)(total_size +
resource->data.
pin_group_function.
resource_source.
string_length +
resource->data.
pin_group_function.
resource_source_label.
string_length +
resource->data.
pin_group_function.
vendor_length);
break;
case ACPI_RESOURCE_TYPE_PIN_GROUP_CONFIG:
total_size = (acpi_rs_length)(total_size +
resource->data.
pin_group_config.
resource_source.
string_length +
resource->data.
pin_group_config.
resource_source_label.
string_length +
resource->data.
pin_group_config.
vendor_length);
break;
default:
break;
}
/* Update the total */
aml_size_needed += total_size;
/* Point to the next object */
resource =
ACPI_ADD_PTR(struct acpi_resource, resource,
resource->length);
}
/* Did not find an end_tag resource descriptor */
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_list_length
*
* PARAMETERS: aml_buffer - Pointer to the resource byte stream
* aml_buffer_length - Size of aml_buffer
* size_needed - Where the size needed is returned
*
* RETURN: Status
*
* DESCRIPTION: Takes an external resource byte stream and calculates the size
* buffer needed to hold the corresponding internal resource
* descriptor linked list.
*
******************************************************************************/
acpi_status
acpi_rs_get_list_length(u8 *aml_buffer,
u32 aml_buffer_length, acpi_size *size_needed)
{
acpi_status status;
u8 *end_aml;
u8 *buffer;
u32 buffer_size;
u16 temp16;
u16 resource_length;
u32 extra_struct_bytes;
u8 resource_index;
u8 minimum_aml_resource_length;
union aml_resource *aml_resource;
ACPI_FUNCTION_TRACE(rs_get_list_length);
*size_needed = ACPI_RS_SIZE_MIN; /* Minimum size is one end_tag */
end_aml = aml_buffer + aml_buffer_length;
/* Walk the list of AML resource descriptors */
while (aml_buffer < end_aml) {
/* Validate the Resource Type and Resource Length */
status =
acpi_ut_validate_resource(NULL, aml_buffer,
&resource_index);
if (ACPI_FAILURE(status)) {
/*
* Exit on failure. Cannot continue because the descriptor length
* may be bogus also.
*/
return_ACPI_STATUS(status);
}
aml_resource = (void *)aml_buffer;
/* Get the resource length and base (minimum) AML size */
resource_length = acpi_ut_get_resource_length(aml_buffer);
minimum_aml_resource_length =
acpi_gbl_resource_aml_sizes[resource_index];
/*
* Augment the size for descriptors with optional
* and/or variable length fields
*/
extra_struct_bytes = 0;
buffer =
aml_buffer + acpi_ut_get_resource_header_length(aml_buffer);
switch (acpi_ut_get_resource_type(aml_buffer)) {
case ACPI_RESOURCE_NAME_IRQ:
/*
* IRQ Resource:
* Get the number of bits set in the 16-bit IRQ mask
*/
ACPI_MOVE_16_TO_16(&temp16, buffer);
extra_struct_bytes = acpi_rs_count_set_bits(temp16);
break;
case ACPI_RESOURCE_NAME_DMA:
/*
* DMA Resource:
* Get the number of bits set in the 8-bit DMA mask
*/
extra_struct_bytes = acpi_rs_count_set_bits(*buffer);
break;
case ACPI_RESOURCE_NAME_VENDOR_SMALL:
case ACPI_RESOURCE_NAME_VENDOR_LARGE:
/*
* Vendor Resource:
* Get the number of vendor data bytes
*/
extra_struct_bytes = resource_length;
/*
* There is already one byte included in the minimum
* descriptor size. If there are extra struct bytes,
* subtract one from the count.
*/
if (extra_struct_bytes) {
extra_struct_bytes--;
}
break;
case ACPI_RESOURCE_NAME_END_TAG:
/*
* End Tag: This is the normal exit
*/
return_ACPI_STATUS(AE_OK);
case ACPI_RESOURCE_NAME_ADDRESS32:
case ACPI_RESOURCE_NAME_ADDRESS16:
case ACPI_RESOURCE_NAME_ADDRESS64:
/*
* Address Resource:
* Add the size of the optional resource_source
*/
extra_struct_bytes =
acpi_rs_stream_option_length(resource_length,
minimum_aml_resource_length);
break;
case ACPI_RESOURCE_NAME_EXTENDED_IRQ:
/*
* Extended IRQ Resource:
* Using the interrupt_table_length, add 4 bytes for each additional
* interrupt. Note: at least one interrupt is required and is
* included in the minimum descriptor size (reason for the -1)
*/
extra_struct_bytes = (buffer[1] - 1) * sizeof(u32);
/* Add the size of the optional resource_source */
extra_struct_bytes +=
acpi_rs_stream_option_length(resource_length -
extra_struct_bytes,
minimum_aml_resource_length);
break;
case ACPI_RESOURCE_NAME_GPIO:
/* Vendor data is optional */
if (aml_resource->gpio.vendor_length) {
extra_struct_bytes +=
aml_resource->gpio.vendor_offset -
aml_resource->gpio.pin_table_offset +
aml_resource->gpio.vendor_length;
} else {
extra_struct_bytes +=
aml_resource->large_header.resource_length +
sizeof(struct aml_resource_large_header) -
aml_resource->gpio.pin_table_offset;
}
break;
case ACPI_RESOURCE_NAME_PIN_FUNCTION:
/* Vendor data is optional */
if (aml_resource->pin_function.vendor_length) {
extra_struct_bytes +=
aml_resource->pin_function.vendor_offset -
aml_resource->pin_function.
pin_table_offset +
aml_resource->pin_function.vendor_length;
} else {
extra_struct_bytes +=
aml_resource->large_header.resource_length +
sizeof(struct aml_resource_large_header) -
aml_resource->pin_function.pin_table_offset;
}
break;
case ACPI_RESOURCE_NAME_SERIAL_BUS:{
/* Avoid undefined behavior: member access within misaligned address */
struct aml_resource_common_serialbus
common_serial_bus;
memcpy(&common_serial_bus, aml_resource,
sizeof(common_serial_bus));
minimum_aml_resource_length =
acpi_gbl_resource_aml_serial_bus_sizes
[common_serial_bus.type];
extra_struct_bytes +=
common_serial_bus.resource_length -
minimum_aml_resource_length;
break;
}
case ACPI_RESOURCE_NAME_PIN_CONFIG:
/* Vendor data is optional */
if (aml_resource->pin_config.vendor_length) {
extra_struct_bytes +=
aml_resource->pin_config.vendor_offset -
aml_resource->pin_config.pin_table_offset +
aml_resource->pin_config.vendor_length;
} else {
extra_struct_bytes +=
aml_resource->large_header.resource_length +
sizeof(struct aml_resource_large_header) -
aml_resource->pin_config.pin_table_offset;
}
break;
case ACPI_RESOURCE_NAME_PIN_GROUP:
extra_struct_bytes +=
aml_resource->pin_group.vendor_offset -
aml_resource->pin_group.pin_table_offset +
aml_resource->pin_group.vendor_length;
break;
case ACPI_RESOURCE_NAME_PIN_GROUP_FUNCTION:
extra_struct_bytes +=
aml_resource->pin_group_function.vendor_offset -
aml_resource->pin_group_function.res_source_offset +
aml_resource->pin_group_function.vendor_length;
break;
case ACPI_RESOURCE_NAME_PIN_GROUP_CONFIG:
extra_struct_bytes +=
aml_resource->pin_group_config.vendor_offset -
aml_resource->pin_group_config.res_source_offset +
aml_resource->pin_group_config.vendor_length;
break;
case ACPI_RESOURCE_NAME_CLOCK_INPUT:
extra_struct_bytes =
acpi_rs_stream_option_length(resource_length,
minimum_aml_resource_length);
break;
default:
break;
}
/*
* Update the required buffer size for the internal descriptor structs
*
* Important: Round the size up for the appropriate alignment. This
* is a requirement on IA64.
*/
if (acpi_ut_get_resource_type(aml_buffer) ==
ACPI_RESOURCE_NAME_SERIAL_BUS) {
/* Avoid undefined behavior: member access within misaligned address */
struct aml_resource_common_serialbus common_serial_bus;
memcpy(&common_serial_bus, aml_resource,
sizeof(common_serial_bus));
buffer_size =
acpi_gbl_resource_struct_serial_bus_sizes
[common_serial_bus.type] + extra_struct_bytes;
} else {
buffer_size =
acpi_gbl_resource_struct_sizes[resource_index] +
extra_struct_bytes;
}
buffer_size = (u32)ACPI_ROUND_UP_TO_NATIVE_WORD(buffer_size);
*size_needed += buffer_size;
ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
"Type %.2X, AmlLength %.2X InternalLength %.2X%8X\n",
acpi_ut_get_resource_type(aml_buffer),
acpi_ut_get_descriptor_length(aml_buffer),
ACPI_FORMAT_UINT64(*size_needed)));
/*
* Point to the next resource within the AML stream using the length
* contained in the resource descriptor header
*/
aml_buffer += acpi_ut_get_descriptor_length(aml_buffer);
}
/* Did not find an end_tag resource descriptor */
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_pci_routing_table_length
*
* PARAMETERS: package_object - Pointer to the package object
* buffer_size_needed - u32 pointer of the size buffer
* needed to properly return the
* parsed data
*
* RETURN: Status
*
* DESCRIPTION: Given a package representing a PCI routing table, this
* calculates the size of the corresponding linked list of
* descriptions.
*
******************************************************************************/
acpi_status
acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object,
acpi_size *buffer_size_needed)
{
u32 number_of_elements;
acpi_size temp_size_needed = 0;
union acpi_operand_object **top_object_list;
u32 index;
union acpi_operand_object *package_element;
union acpi_operand_object **sub_object_list;
u8 name_found;
u32 table_index;
ACPI_FUNCTION_TRACE(rs_get_pci_routing_table_length);
number_of_elements = package_object->package.count;
/*
* Calculate the size of the return buffer.
* The base size is the number of elements * the sizes of the
* structures. Additional space for the strings is added below.
* The minus one is to subtract the size of the u8 Source[1]
* member because it is added below.
*
* But each PRT_ENTRY structure has a pointer to a string and
* the size of that string must be found.
*/
top_object_list = package_object->package.elements;
for (index = 0; index < number_of_elements; index++) {
/* Dereference the subpackage */
package_element = *top_object_list;
/* We must have a valid Package object */
if (!package_element ||
(package_element->common.type != ACPI_TYPE_PACKAGE)) {
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/*
* The sub_object_list will now point to an array of the
* four IRQ elements: Address, Pin, Source and source_index
*/
sub_object_list = package_element->package.elements;
/* Scan the irq_table_elements for the Source Name String */
name_found = FALSE;
for (table_index = 0;
table_index < package_element->package.count
&& !name_found; table_index++) {
if (*sub_object_list && /* Null object allowed */
((ACPI_TYPE_STRING ==
(*sub_object_list)->common.type) ||
((ACPI_TYPE_LOCAL_REFERENCE ==
(*sub_object_list)->common.type) &&
((*sub_object_list)->reference.class ==
ACPI_REFCLASS_NAME)))) {
name_found = TRUE;
} else {
/* Look at the next element */
sub_object_list++;
}
}
temp_size_needed += (sizeof(struct acpi_pci_routing_table) - 4);
/* Was a String type found? */
if (name_found) {
if ((*sub_object_list)->common.type == ACPI_TYPE_STRING) {
/*
* The length String.Length field does not include the
* terminating NULL, add 1
*/
temp_size_needed += ((acpi_size)
(*sub_object_list)->string.
length + 1);
} else {
temp_size_needed += acpi_ns_get_pathname_length((*sub_object_list)->reference.node);
}
} else {
/*
* If no name was found, then this is a NULL, which is
* translated as a u32 zero.
*/
temp_size_needed += sizeof(u32);
}
/* Round up the size since each element must be aligned */
temp_size_needed = ACPI_ROUND_UP_TO_64BIT(temp_size_needed);
/* Point to the next union acpi_operand_object */
top_object_list++;
}
/*
* Add an extra element to the end of the list, essentially a
* NULL terminator
*/
*buffer_size_needed =
temp_size_needed + sizeof(struct acpi_pci_routing_table);
return_ACPI_STATUS(AE_OK);
}
| linux-master | drivers/acpi/acpica/rscalc.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: exprep - ACPI AML field prep utilities
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"
#include "amlcode.h"
#include "acnamesp.h"
#include "acdispat.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("exprep")
/* Local prototypes */
static u32
acpi_ex_decode_field_access(union acpi_operand_object *obj_desc,
u8 field_flags, u32 * return_byte_alignment);
#ifdef ACPI_UNDER_DEVELOPMENT
static u32
acpi_ex_generate_access(u32 field_bit_offset,
u32 field_bit_length, u32 region_length);
/*******************************************************************************
*
* FUNCTION: acpi_ex_generate_access
*
* PARAMETERS: field_bit_offset - Start of field within parent region/buffer
* field_bit_length - Length of field in bits
* region_length - Length of parent in bytes
*
* RETURN: Field granularity (8, 16, 32 or 64) and
* byte_alignment (1, 2, 3, or 4)
*
* DESCRIPTION: Generate an optimal access width for fields defined with the
* any_acc keyword.
*
* NOTE: Need to have the region_length in order to check for boundary
* conditions (end-of-region). However, the region_length is a deferred
* operation. Therefore, to complete this implementation, the generation
* of this access width must be deferred until the region length has
* been evaluated.
*
******************************************************************************/
static u32
acpi_ex_generate_access(u32 field_bit_offset,
u32 field_bit_length, u32 region_length)
{
u32 field_byte_length;
u32 field_byte_offset;
u32 field_byte_end_offset;
u32 access_byte_width;
u32 field_start_offset;
u32 field_end_offset;
u32 minimum_access_width = 0xFFFFFFFF;
u32 minimum_accesses = 0xFFFFFFFF;
u32 accesses;
ACPI_FUNCTION_TRACE(ex_generate_access);
/* Round Field start offset and length to "minimal" byte boundaries */
field_byte_offset = ACPI_DIV_8(ACPI_ROUND_DOWN(field_bit_offset, 8));
field_byte_end_offset =
ACPI_DIV_8(ACPI_ROUND_UP(field_bit_length + field_bit_offset, 8));
field_byte_length = field_byte_end_offset - field_byte_offset;
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"Bit length %u, Bit offset %u\n",
field_bit_length, field_bit_offset));
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"Byte Length %u, Byte Offset %u, End Offset %u\n",
field_byte_length, field_byte_offset,
field_byte_end_offset));
/*
* Iterative search for the maximum access width that is both aligned
* and does not go beyond the end of the region
*
* Start at byte_acc and work upwards to qword_acc max. (1,2,4,8 bytes)
*/
for (access_byte_width = 1; access_byte_width <= 8;
access_byte_width <<= 1) {
/*
* 1) Round end offset up to next access boundary and make sure that
* this does not go beyond the end of the parent region.
* 2) When the Access width is greater than the field_byte_length, we
* are done. (This does not optimize for the perfectly aligned
* case yet).
*/
if (ACPI_ROUND_UP(field_byte_end_offset, access_byte_width) <=
region_length) {
field_start_offset =
ACPI_ROUND_DOWN(field_byte_offset,
access_byte_width) /
access_byte_width;
field_end_offset =
ACPI_ROUND_UP((field_byte_length +
field_byte_offset),
access_byte_width) /
access_byte_width;
accesses = field_end_offset - field_start_offset;
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"AccessWidth %u end is within region\n",
access_byte_width));
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"Field Start %u, Field End %u -- requires %u accesses\n",
field_start_offset, field_end_offset,
accesses));
/* Single access is optimal */
if (accesses <= 1) {
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"Entire field can be accessed "
"with one operation of size %u\n",
access_byte_width));
return_VALUE(access_byte_width);
}
/*
* Fits in the region, but requires more than one read/write.
* try the next wider access on next iteration
*/
if (accesses < minimum_accesses) {
minimum_accesses = accesses;
minimum_access_width = access_byte_width;
}
} else {
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"AccessWidth %u end is NOT within region\n",
access_byte_width));
if (access_byte_width == 1) {
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"Field goes beyond end-of-region!\n"));
/* Field does not fit in the region at all */
return_VALUE(0);
}
/*
* This width goes beyond the end-of-region, back off to
* previous access
*/
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"Backing off to previous optimal access width of %u\n",
minimum_access_width));
return_VALUE(minimum_access_width);
}
}
/*
* Could not read/write field with one operation,
* just use max access width
*/
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"Cannot access field in one operation, using width 8\n"));
return_VALUE(8);
}
#endif /* ACPI_UNDER_DEVELOPMENT */
/*******************************************************************************
*
* FUNCTION: acpi_ex_decode_field_access
*
* PARAMETERS: obj_desc - Field object
* field_flags - Encoded fieldflags (contains access bits)
* return_byte_alignment - Where the byte alignment is returned
*
* RETURN: Field granularity (8, 16, 32 or 64) and
* byte_alignment (1, 2, 3, or 4)
*
* DESCRIPTION: Decode the access_type bits of a field definition.
*
******************************************************************************/
static u32
acpi_ex_decode_field_access(union acpi_operand_object *obj_desc,
u8 field_flags, u32 * return_byte_alignment)
{
u32 access;
u32 byte_alignment;
u32 bit_length;
ACPI_FUNCTION_TRACE(ex_decode_field_access);
access = (field_flags & AML_FIELD_ACCESS_TYPE_MASK);
switch (access) {
case AML_FIELD_ACCESS_ANY:
#ifdef ACPI_UNDER_DEVELOPMENT
byte_alignment =
acpi_ex_generate_access(obj_desc->common_field.
start_field_bit_offset,
obj_desc->common_field.bit_length,
0xFFFFFFFF
/* Temp until we pass region_length as parameter */
);
bit_length = byte_alignment * 8;
#endif
byte_alignment = 1;
bit_length = 8;
break;
case AML_FIELD_ACCESS_BYTE:
case AML_FIELD_ACCESS_BUFFER: /* ACPI 2.0 (SMBus Buffer) */
byte_alignment = 1;
bit_length = 8;
break;
case AML_FIELD_ACCESS_WORD:
byte_alignment = 2;
bit_length = 16;
break;
case AML_FIELD_ACCESS_DWORD:
byte_alignment = 4;
bit_length = 32;
break;
case AML_FIELD_ACCESS_QWORD: /* ACPI 2.0 */
byte_alignment = 8;
bit_length = 64;
break;
default:
/* Invalid field access type */
ACPI_ERROR((AE_INFO, "Unknown field access type 0x%X", access));
return_UINT32(0);
}
if (obj_desc->common.type == ACPI_TYPE_BUFFER_FIELD) {
/*
* buffer_field access can be on any byte boundary, so the
* byte_alignment is always 1 byte -- regardless of any byte_alignment
* implied by the field access type.
*/
byte_alignment = 1;
}
*return_byte_alignment = byte_alignment;
return_UINT32(bit_length);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_prep_common_field_object
*
* PARAMETERS: obj_desc - The field object
* field_flags - Access, lock_rule, and update_rule.
* The format of a field_flag is described
* in the ACPI specification
* field_attribute - Special attributes (not used)
* field_bit_position - Field start position
* field_bit_length - Field length in number of bits
*
* RETURN: Status
*
* DESCRIPTION: Initialize the areas of the field object that are common
* to the various types of fields. Note: This is very "sensitive"
* code because we are solving the general case for field
* alignment.
*
******************************************************************************/
acpi_status
acpi_ex_prep_common_field_object(union acpi_operand_object *obj_desc,
u8 field_flags,
u8 field_attribute,
u32 field_bit_position, u32 field_bit_length)
{
u32 access_bit_width;
u32 byte_alignment;
u32 nearest_byte_address;
ACPI_FUNCTION_TRACE(ex_prep_common_field_object);
/*
* Note: the structure being initialized is the
* ACPI_COMMON_FIELD_INFO; No structure fields outside of the common
* area are initialized by this procedure.
*/
obj_desc->common_field.field_flags = field_flags;
obj_desc->common_field.attribute = field_attribute;
obj_desc->common_field.bit_length = field_bit_length;
/*
* Decode the access type so we can compute offsets. The access type gives
* two pieces of information - the width of each field access and the
* necessary byte_alignment (address granularity) of the access.
*
* For any_acc, the access_bit_width is the largest width that is both
* necessary and possible in an attempt to access the whole field in one
* I/O operation. However, for any_acc, the byte_alignment is always one
* byte.
*
* For all Buffer Fields, the byte_alignment is always one byte.
*
* For all other access types (Byte, Word, Dword, Qword), the Bitwidth is
* the same (equivalent) as the byte_alignment.
*/
access_bit_width =
acpi_ex_decode_field_access(obj_desc, field_flags, &byte_alignment);
if (!access_bit_width) {
return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
}
/* Setup width (access granularity) fields (values are: 1, 2, 4, 8) */
obj_desc->common_field.access_byte_width = (u8)
ACPI_DIV_8(access_bit_width);
/*
* base_byte_offset is the address of the start of the field within the
* region. It is the byte address of the first *datum* (field-width data
* unit) of the field. (i.e., the first datum that contains at least the
* first *bit* of the field.)
*
* Note: byte_alignment is always either equal to the access_bit_width or 8
* (Byte access), and it defines the addressing granularity of the parent
* region or buffer.
*/
nearest_byte_address =
ACPI_ROUND_BITS_DOWN_TO_BYTES(field_bit_position);
obj_desc->common_field.base_byte_offset = (u32)
ACPI_ROUND_DOWN(nearest_byte_address, byte_alignment);
/*
* start_field_bit_offset is the offset of the first bit of the field within
* a field datum.
*/
obj_desc->common_field.start_field_bit_offset = (u8)
(field_bit_position -
ACPI_MUL_8(obj_desc->common_field.base_byte_offset));
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_prep_field_value
*
* PARAMETERS: info - Contains all field creation info
*
* RETURN: Status
*
* DESCRIPTION: Construct an object of type union acpi_operand_object with a
* subtype of def_field and connect it to the parent Node.
*
******************************************************************************/
acpi_status acpi_ex_prep_field_value(struct acpi_create_field_info *info)
{
union acpi_operand_object *obj_desc;
union acpi_operand_object *second_desc = NULL;
acpi_status status;
u32 access_byte_width;
u32 type;
ACPI_FUNCTION_TRACE(ex_prep_field_value);
/* Parameter validation */
if (info->field_type != ACPI_TYPE_LOCAL_INDEX_FIELD) {
if (!info->region_node) {
ACPI_ERROR((AE_INFO, "Null RegionNode"));
return_ACPI_STATUS(AE_AML_NO_OPERAND);
}
type = acpi_ns_get_type(info->region_node);
if (type != ACPI_TYPE_REGION) {
ACPI_ERROR((AE_INFO,
"Needed Region, found type 0x%X (%s)", type,
acpi_ut_get_type_name(type)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
}
/* Allocate a new field object */
obj_desc = acpi_ut_create_internal_object(info->field_type);
if (!obj_desc) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Initialize areas of the object that are common to all fields */
obj_desc->common_field.node = info->field_node;
status = acpi_ex_prep_common_field_object(obj_desc,
info->field_flags,
info->attribute,
info->field_bit_position,
info->field_bit_length);
if (ACPI_FAILURE(status)) {
acpi_ut_delete_object_desc(obj_desc);
return_ACPI_STATUS(status);
}
/* Initialize areas of the object that are specific to the field type */
switch (info->field_type) {
case ACPI_TYPE_LOCAL_REGION_FIELD:
obj_desc->field.region_obj =
acpi_ns_get_attached_object(info->region_node);
/* Fields specific to generic_serial_bus fields */
obj_desc->field.access_length = info->access_length;
if (info->connection_node) {
second_desc = info->connection_node->object;
if (!(second_desc->common.flags & AOPOBJ_DATA_VALID)) {
status =
acpi_ds_get_buffer_arguments(second_desc);
if (ACPI_FAILURE(status)) {
acpi_ut_delete_object_desc(obj_desc);
return_ACPI_STATUS(status);
}
}
obj_desc->field.resource_buffer =
second_desc->buffer.pointer;
obj_desc->field.resource_length =
(u16)second_desc->buffer.length;
} else if (info->resource_buffer) {
obj_desc->field.resource_buffer = info->resource_buffer;
obj_desc->field.resource_length = info->resource_length;
}
obj_desc->field.pin_number_index = info->pin_number_index;
/* Allow full data read from EC address space */
if ((obj_desc->field.region_obj->region.space_id ==
ACPI_ADR_SPACE_EC)
&& (obj_desc->common_field.bit_length > 8)) {
access_byte_width =
ACPI_ROUND_BITS_UP_TO_BYTES(obj_desc->common_field.
bit_length);
/* Maximum byte width supported is 255 */
if (access_byte_width < 256) {
obj_desc->common_field.access_byte_width =
(u8)access_byte_width;
}
}
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"RegionField: BitOff %X, Off %X, Gran %X, Region %p\n",
obj_desc->field.start_field_bit_offset,
obj_desc->field.base_byte_offset,
obj_desc->field.access_byte_width,
obj_desc->field.region_obj));
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
obj_desc->bank_field.value = info->bank_value;
obj_desc->bank_field.region_obj =
acpi_ns_get_attached_object(info->region_node);
obj_desc->bank_field.bank_obj =
acpi_ns_get_attached_object(info->register_node);
/* An additional reference for the attached objects */
acpi_ut_add_reference(obj_desc->bank_field.region_obj);
acpi_ut_add_reference(obj_desc->bank_field.bank_obj);
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"Bank Field: BitOff %X, Off %X, Gran %X, Region %p, BankReg %p\n",
obj_desc->bank_field.start_field_bit_offset,
obj_desc->bank_field.base_byte_offset,
obj_desc->field.access_byte_width,
obj_desc->bank_field.region_obj,
obj_desc->bank_field.bank_obj));
/*
* Remember location in AML stream of the field unit
* opcode and operands -- since the bank_value
* operands must be evaluated.
*/
second_desc = obj_desc->common.next_object;
second_desc->extra.aml_start =
ACPI_CAST_PTR(union acpi_parse_object,
info->data_register_node)->named.data;
second_desc->extra.aml_length =
ACPI_CAST_PTR(union acpi_parse_object,
info->data_register_node)->named.length;
break;
case ACPI_TYPE_LOCAL_INDEX_FIELD:
/* Get the Index and Data registers */
obj_desc->index_field.index_obj =
acpi_ns_get_attached_object(info->register_node);
obj_desc->index_field.data_obj =
acpi_ns_get_attached_object(info->data_register_node);
if (!obj_desc->index_field.data_obj
|| !obj_desc->index_field.index_obj) {
ACPI_ERROR((AE_INFO,
"Null Index Object during field prep"));
acpi_ut_delete_object_desc(obj_desc);
return_ACPI_STATUS(AE_AML_INTERNAL);
}
/* An additional reference for the attached objects */
acpi_ut_add_reference(obj_desc->index_field.data_obj);
acpi_ut_add_reference(obj_desc->index_field.index_obj);
/*
* April 2006: Changed to match MS behavior
*
* The value written to the Index register is the byte offset of the
* target field in units of the granularity of the index_field
*
* Previously, the value was calculated as an index in terms of the
* width of the Data register, as below:
*
* obj_desc->index_field.Value = (u32)
* (Info->field_bit_position / ACPI_MUL_8 (
* obj_desc->Field.access_byte_width));
*
* February 2006: Tried value as a byte offset:
* obj_desc->index_field.Value = (u32)
* ACPI_DIV_8 (Info->field_bit_position);
*/
obj_desc->index_field.value =
(u32) ACPI_ROUND_DOWN(ACPI_DIV_8(info->field_bit_position),
obj_desc->index_field.
access_byte_width);
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"IndexField: BitOff %X, Off %X, Value %X, "
"Gran %X, Index %p, Data %p\n",
obj_desc->index_field.start_field_bit_offset,
obj_desc->index_field.base_byte_offset,
obj_desc->index_field.value,
obj_desc->field.access_byte_width,
obj_desc->index_field.index_obj,
obj_desc->index_field.data_obj));
break;
default:
/* No other types should get here */
break;
}
/*
* Store the constructed descriptor (obj_desc) into the parent Node,
* preserving the current type of that named_obj.
*/
status =
acpi_ns_attach_object(info->field_node, obj_desc,
acpi_ns_get_type(info->field_node));
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"Set NamedObj %p [%4.4s], ObjDesc %p\n",
info->field_node,
acpi_ut_get_node_name(info->field_node), obj_desc));
/* Remove local reference to the object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/exprep.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: exstore - AML Interpreter object store support
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdispat.h"
#include "acinterp.h"
#include "amlcode.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("exstore")
/* Local prototypes */
static acpi_status
acpi_ex_store_object_to_index(union acpi_operand_object *val_desc,
union acpi_operand_object *dest_desc,
struct acpi_walk_state *walk_state);
static acpi_status
acpi_ex_store_direct_to_node(union acpi_operand_object *source_desc,
struct acpi_namespace_node *node,
struct acpi_walk_state *walk_state);
/*******************************************************************************
*
* FUNCTION: acpi_ex_store
*
* PARAMETERS: *source_desc - Value to be stored
* *dest_desc - Where to store it. Must be an NS node
* or union acpi_operand_object of type
* Reference;
* walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Store the value described by source_desc into the location
* described by dest_desc. Called by various interpreter
* functions to store the result of an operation into
* the destination operand -- not just simply the actual "Store"
* ASL operator.
*
******************************************************************************/
acpi_status
acpi_ex_store(union acpi_operand_object *source_desc,
union acpi_operand_object *dest_desc,
struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
union acpi_operand_object *ref_desc = dest_desc;
ACPI_FUNCTION_TRACE_PTR(ex_store, dest_desc);
/* Validate parameters */
if (!source_desc || !dest_desc) {
ACPI_ERROR((AE_INFO, "Null parameter"));
return_ACPI_STATUS(AE_AML_NO_OPERAND);
}
/* dest_desc can be either a namespace node or an ACPI object */
if (ACPI_GET_DESCRIPTOR_TYPE(dest_desc) == ACPI_DESC_TYPE_NAMED) {
/*
* Dest is a namespace node,
* Storing an object into a Named node.
*/
status = acpi_ex_store_object_to_node(source_desc,
(struct
acpi_namespace_node *)
dest_desc, walk_state,
ACPI_IMPLICIT_CONVERSION);
return_ACPI_STATUS(status);
}
/* Destination object must be a Reference or a Constant object */
switch (dest_desc->common.type) {
case ACPI_TYPE_LOCAL_REFERENCE:
break;
case ACPI_TYPE_INTEGER:
/* Allow stores to Constants -- a Noop as per ACPI spec */
if (dest_desc->common.flags & AOPOBJ_AML_CONSTANT) {
return_ACPI_STATUS(AE_OK);
}
ACPI_FALLTHROUGH;
default:
/* Destination is not a Reference object */
ACPI_ERROR((AE_INFO,
"Target is not a Reference or Constant object - [%s] %p",
acpi_ut_get_object_type_name(dest_desc),
dest_desc));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/*
* Examine the Reference class. These cases are handled:
*
* 1) Store to Name (Change the object associated with a name)
* 2) Store to an indexed area of a Buffer or Package
* 3) Store to a Method Local or Arg
* 4) Store to the debug object
*/
switch (ref_desc->reference.class) {
case ACPI_REFCLASS_REFOF:
/* Storing an object into a Name "container" */
status = acpi_ex_store_object_to_node(source_desc,
ref_desc->reference.
object, walk_state,
ACPI_IMPLICIT_CONVERSION);
break;
case ACPI_REFCLASS_INDEX:
/* Storing to an Index (pointer into a packager or buffer) */
status =
acpi_ex_store_object_to_index(source_desc, ref_desc,
walk_state);
break;
case ACPI_REFCLASS_LOCAL:
case ACPI_REFCLASS_ARG:
/* Store to a method local/arg */
status =
acpi_ds_store_object_to_local(ref_desc->reference.class,
ref_desc->reference.value,
source_desc, walk_state);
break;
case ACPI_REFCLASS_DEBUG:
/*
* Storing to the Debug object causes the value stored to be
* displayed and otherwise has no effect -- see ACPI Specification
*/
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"**** Write to Debug Object: Object %p [%s] ****:\n\n",
source_desc,
acpi_ut_get_object_type_name(source_desc)));
ACPI_DEBUG_OBJECT(source_desc, 0, 0);
break;
default:
ACPI_ERROR((AE_INFO, "Unknown Reference Class 0x%2.2X",
ref_desc->reference.class));
ACPI_DUMP_ENTRY(ref_desc, ACPI_LV_INFO);
status = AE_AML_INTERNAL;
break;
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_store_object_to_index
*
* PARAMETERS: *source_desc - Value to be stored
* *dest_desc - Named object to receive the value
* walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Store the object to indexed Buffer or Package element
*
******************************************************************************/
static acpi_status
acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
union acpi_operand_object *index_desc,
struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
union acpi_operand_object *obj_desc;
union acpi_operand_object *new_desc;
u8 value = 0;
u32 i;
ACPI_FUNCTION_TRACE(ex_store_object_to_index);
/*
* Destination must be a reference pointer, and
* must point to either a buffer or a package
*/
switch (index_desc->reference.target_type) {
case ACPI_TYPE_PACKAGE:
/*
* Storing to a package element. Copy the object and replace
* any existing object with the new object. No implicit
* conversion is performed.
*
* The object at *(index_desc->Reference.Where) is the
* element within the package that is to be modified.
* The parent package object is at index_desc->Reference.Object
*/
obj_desc = *(index_desc->reference.where);
if (source_desc->common.type == ACPI_TYPE_LOCAL_REFERENCE &&
source_desc->reference.class == ACPI_REFCLASS_TABLE) {
/* This is a DDBHandle, just add a reference to it */
acpi_ut_add_reference(source_desc);
new_desc = source_desc;
} else {
/* Normal object, copy it */
status =
acpi_ut_copy_iobject_to_iobject(source_desc,
&new_desc,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
if (obj_desc) {
/* Decrement reference count by the ref count of the parent package */
for (i = 0; i < ((union acpi_operand_object *)
index_desc->reference.object)->common.
reference_count; i++) {
acpi_ut_remove_reference(obj_desc);
}
}
*(index_desc->reference.where) = new_desc;
/* Increment ref count by the ref count of the parent package-1 */
for (i = 1; i < ((union acpi_operand_object *)
index_desc->reference.object)->common.
reference_count; i++) {
acpi_ut_add_reference(new_desc);
}
break;
case ACPI_TYPE_BUFFER_FIELD:
/*
* Store into a Buffer or String (not actually a real buffer_field)
* at a location defined by an Index.
*
* The first 8-bit element of the source object is written to the
* 8-bit Buffer location defined by the Index destination object,
* according to the ACPI 2.0 specification.
*/
/*
* Make sure the target is a Buffer or String. An error should
* not happen here, since the reference_object was constructed
* by the INDEX_OP code.
*/
obj_desc = index_desc->reference.object;
if ((obj_desc->common.type != ACPI_TYPE_BUFFER) &&
(obj_desc->common.type != ACPI_TYPE_STRING)) {
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/*
* The assignment of the individual elements will be slightly
* different for each source type.
*/
switch (source_desc->common.type) {
case ACPI_TYPE_INTEGER:
/* Use the least-significant byte of the integer */
value = (u8) (source_desc->integer.value);
break;
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_STRING:
/* Note: Takes advantage of common string/buffer fields */
value = source_desc->buffer.pointer[0];
break;
default:
/* All other types are invalid */
ACPI_ERROR((AE_INFO,
"Source must be type [Integer/Buffer/String], found [%s]",
acpi_ut_get_object_type_name(source_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/* Store the source value into the target buffer byte */
obj_desc->buffer.pointer[index_desc->reference.value] = value;
break;
default:
ACPI_ERROR((AE_INFO,
"Target is not of type [Package/BufferField]"));
status = AE_AML_TARGET_TYPE;
break;
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_store_object_to_node
*
* PARAMETERS: source_desc - Value to be stored
* node - Named object to receive the value
* walk_state - Current walk state
* implicit_conversion - Perform implicit conversion (yes/no)
*
* RETURN: Status
*
* DESCRIPTION: Store the object to the named object.
*
* The assignment of an object to a named object is handled here.
* The value passed in will replace the current value (if any)
* with the input value.
*
* When storing into an object the data is converted to the
* target object type then stored in the object. This means
* that the target object type (for an initialized target) will
* not be changed by a store operation. A copy_object can change
* the target type, however.
*
* The implicit_conversion flag is set to NO/FALSE only when
* storing to an arg_x -- as per the rules of the ACPI spec.
*
* Assumes parameters are already validated.
*
******************************************************************************/
acpi_status
acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
struct acpi_namespace_node *node,
struct acpi_walk_state *walk_state,
u8 implicit_conversion)
{
acpi_status status = AE_OK;
union acpi_operand_object *target_desc;
union acpi_operand_object *new_desc;
acpi_object_type target_type;
ACPI_FUNCTION_TRACE_PTR(ex_store_object_to_node, source_desc);
/* Get current type of the node, and object attached to Node */
target_type = acpi_ns_get_type(node);
target_desc = acpi_ns_get_attached_object(node);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Storing %p [%s] to node %p [%s]\n",
source_desc,
acpi_ut_get_object_type_name(source_desc), node,
acpi_ut_get_type_name(target_type)));
/* Only limited target types possible for everything except copy_object */
if (walk_state->opcode != AML_COPY_OBJECT_OP) {
/*
* Only copy_object allows all object types to be overwritten. For
* target_ref(s), there are restrictions on the object types that
* are allowed.
*
* Allowable operations/typing for Store:
*
* 1) Simple Store
* Integer --> Integer (Named/Local/Arg)
* String --> String (Named/Local/Arg)
* Buffer --> Buffer (Named/Local/Arg)
* Package --> Package (Named/Local/Arg)
*
* 2) Store with implicit conversion
* Integer --> String or Buffer (Named)
* String --> Integer or Buffer (Named)
* Buffer --> Integer or String (Named)
*/
switch (target_type) {
case ACPI_TYPE_PACKAGE:
/*
* Here, can only store a package to an existing package.
* Storing a package to a Local/Arg is OK, and handled
* elsewhere.
*/
if (walk_state->opcode == AML_STORE_OP) {
if (source_desc->common.type !=
ACPI_TYPE_PACKAGE) {
ACPI_ERROR((AE_INFO,
"Cannot assign type [%s] to [Package] "
"(source must be type Pkg)",
acpi_ut_get_object_type_name
(source_desc)));
return_ACPI_STATUS(AE_AML_TARGET_TYPE);
}
break;
}
ACPI_FALLTHROUGH;
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_EVENT:
case ACPI_TYPE_MUTEX:
case ACPI_TYPE_REGION:
case ACPI_TYPE_POWER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
ACPI_ERROR((AE_INFO,
"Target must be [Buffer/Integer/String/Reference]"
", found [%s] (%4.4s)",
acpi_ut_get_type_name(node->type),
node->name.ascii));
return_ACPI_STATUS(AE_AML_TARGET_TYPE);
default:
break;
}
}
/*
* Resolve the source object to an actual value
* (If it is a reference object)
*/
status = acpi_ex_resolve_object(&source_desc, target_type, walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Do the actual store operation */
switch (target_type) {
/*
* The simple data types all support implicit source operand
* conversion before the store.
*/
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
if ((walk_state->opcode == AML_COPY_OBJECT_OP) ||
!implicit_conversion) {
/*
* However, copy_object and Stores to arg_x do not perform
* an implicit conversion, as per the ACPI specification.
* A direct store is performed instead.
*/
status =
acpi_ex_store_direct_to_node(source_desc, node,
walk_state);
break;
}
/* Store with implicit source operand conversion support */
status =
acpi_ex_store_object_to_object(source_desc, target_desc,
&new_desc, walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (new_desc != target_desc) {
/*
* Store the new new_desc as the new value of the Name, and set
* the Name's type to that of the value being stored in it.
* source_desc reference count is incremented by attach_object.
*
* Note: This may change the type of the node if an explicit
* store has been performed such that the node/object type
* has been changed.
*/
status =
acpi_ns_attach_object(node, new_desc,
new_desc->common.type);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Store type [%s] into [%s] via Convert/Attach\n",
acpi_ut_get_object_type_name
(source_desc),
acpi_ut_get_object_type_name
(new_desc)));
}
break;
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
case ACPI_TYPE_LOCAL_INDEX_FIELD:
/*
* For all fields, always write the source data to the target
* field. Any required implicit source operand conversion is
* performed in the function below as necessary. Note, field
* objects must retain their original type permanently.
*/
status = acpi_ex_write_data_to_field(source_desc, target_desc,
&walk_state->result_obj);
break;
default:
/*
* copy_object operator: No conversions for all other types.
* Instead, directly store a copy of the source object.
*
* This is the ACPI spec-defined behavior for the copy_object
* operator. (Note, for this default case, all normal
* Store/Target operations exited above with an error).
*/
status =
acpi_ex_store_direct_to_node(source_desc, node, walk_state);
break;
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_store_direct_to_node
*
* PARAMETERS: source_desc - Value to be stored
* node - Named object to receive the value
* walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: "Store" an object directly to a node. This involves a copy
* and an attach.
*
******************************************************************************/
static acpi_status
acpi_ex_store_direct_to_node(union acpi_operand_object *source_desc,
struct acpi_namespace_node *node,
struct acpi_walk_state *walk_state)
{
acpi_status status;
union acpi_operand_object *new_desc;
ACPI_FUNCTION_TRACE(ex_store_direct_to_node);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Storing [%s] (%p) directly into node [%s] (%p)"
" with no implicit conversion\n",
acpi_ut_get_object_type_name(source_desc),
source_desc, acpi_ut_get_type_name(node->type),
node));
/* Copy the source object to a new object */
status =
acpi_ut_copy_iobject_to_iobject(source_desc, &new_desc, walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Attach the new object to the node */
status = acpi_ns_attach_object(node, new_desc, new_desc->common.type);
acpi_ut_remove_reference(new_desc);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/exstore.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Name: hwtimer.c - ACPI Power Management Timer Interface
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#define EXPORT_ACPI_INTERFACES
#include <acpi/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_HARDWARE
ACPI_MODULE_NAME("hwtimer")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/******************************************************************************
*
* FUNCTION: acpi_get_timer_resolution
*
* PARAMETERS: resolution - Where the resolution is returned
*
* RETURN: Status and timer resolution
*
* DESCRIPTION: Obtains resolution of the ACPI PM Timer (24 or 32 bits).
*
******************************************************************************/
acpi_status acpi_get_timer_resolution(u32 * resolution)
{
ACPI_FUNCTION_TRACE(acpi_get_timer_resolution);
if (!resolution) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
if ((acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER) == 0) {
*resolution = 24;
} else {
*resolution = 32;
}
return_ACPI_STATUS(AE_OK);
}
ACPI_EXPORT_SYMBOL(acpi_get_timer_resolution)
/******************************************************************************
*
* FUNCTION: acpi_get_timer
*
* PARAMETERS: ticks - Where the timer value is returned
*
* RETURN: Status and current timer value (ticks)
*
* DESCRIPTION: Obtains current value of ACPI PM Timer (in ticks).
*
******************************************************************************/
acpi_status acpi_get_timer(u32 * ticks)
{
acpi_status status;
u64 timer_value;
ACPI_FUNCTION_TRACE(acpi_get_timer);
if (!ticks) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* ACPI 5.0A: PM Timer is optional */
if (!acpi_gbl_FADT.xpm_timer_block.address) {
return_ACPI_STATUS(AE_SUPPORT);
}
status = acpi_hw_read(&timer_value, &acpi_gbl_FADT.xpm_timer_block);
if (ACPI_SUCCESS(status)) {
/* ACPI PM Timer is defined to be 32 bits (PM_TMR_LEN) */
*ticks = (u32)timer_value;
}
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_get_timer)
/******************************************************************************
*
* FUNCTION: acpi_get_timer_duration
*
* PARAMETERS: start_ticks - Starting timestamp
* end_ticks - End timestamp
* time_elapsed - Where the elapsed time is returned
*
* RETURN: Status and time_elapsed
*
* DESCRIPTION: Computes the time elapsed (in microseconds) between two
* PM Timer time stamps, taking into account the possibility of
* rollovers, the timer resolution, and timer frequency.
*
* The PM Timer's clock ticks at roughly 3.6 times per
* _microsecond_, and its clock continues through Cx state
* transitions (unlike many CPU timestamp counters) -- making it
* a versatile and accurate timer.
*
* Note that this function accommodates only a single timer
* rollover. Thus for 24-bit timers, this function should only
* be used for calculating durations less than ~4.6 seconds
* (~20 minutes for 32-bit timers) -- calculations below:
*
* 2**24 Ticks / 3,600,000 Ticks/Sec = 4.66 sec
* 2**32 Ticks / 3,600,000 Ticks/Sec = 1193 sec or 19.88 minutes
*
******************************************************************************/
acpi_status
acpi_get_timer_duration(u32 start_ticks, u32 end_ticks, u32 *time_elapsed)
{
acpi_status status;
u64 delta_ticks;
u64 quotient;
ACPI_FUNCTION_TRACE(acpi_get_timer_duration);
if (!time_elapsed) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* ACPI 5.0A: PM Timer is optional */
if (!acpi_gbl_FADT.xpm_timer_block.address) {
return_ACPI_STATUS(AE_SUPPORT);
}
if (start_ticks == end_ticks) {
*time_elapsed = 0;
return_ACPI_STATUS(AE_OK);
}
/*
* Compute Tick Delta:
* Handle (max one) timer rollovers on 24-bit versus 32-bit timers.
*/
delta_ticks = end_ticks;
if (start_ticks > end_ticks) {
if ((acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER) == 0) {
/* 24-bit Timer */
delta_ticks |= (u64)1 << 24;
} else {
/* 32-bit Timer */
delta_ticks |= (u64)1 << 32;
}
}
delta_ticks -= start_ticks;
/*
* Compute Duration (Requires a 64-bit multiply and divide):
*
* time_elapsed (microseconds) =
* (delta_ticks * ACPI_USEC_PER_SEC) / ACPI_PM_TIMER_FREQUENCY;
*/
status = acpi_ut_short_divide(delta_ticks * ACPI_USEC_PER_SEC,
ACPI_PM_TIMER_FREQUENCY, "ient, NULL);
*time_elapsed = (u32)quotient;
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_get_timer_duration)
#endif /* !ACPI_REDUCED_HARDWARE */
| linux-master | drivers/acpi/acpica/hwtimer.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: psutils - Parser miscellaneous utilities (Parser only)
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "amlcode.h"
#include "acconvert.h"
#define _COMPONENT ACPI_PARSER
ACPI_MODULE_NAME("psutils")
/*******************************************************************************
*
* FUNCTION: acpi_ps_create_scope_op
*
* PARAMETERS: None
*
* RETURN: A new Scope object, null on failure
*
* DESCRIPTION: Create a Scope and associated namepath op with the root name
*
******************************************************************************/
union acpi_parse_object *acpi_ps_create_scope_op(u8 *aml)
{
union acpi_parse_object *scope_op;
scope_op = acpi_ps_alloc_op(AML_SCOPE_OP, aml);
if (!scope_op) {
return (NULL);
}
scope_op->named.name = ACPI_ROOT_NAME;
return (scope_op);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_init_op
*
* PARAMETERS: op - A newly allocated Op object
* opcode - Opcode to store in the Op
*
* RETURN: None
*
* DESCRIPTION: Initialize a parse (Op) object
*
******************************************************************************/
void acpi_ps_init_op(union acpi_parse_object *op, u16 opcode)
{
ACPI_FUNCTION_ENTRY();
op->common.descriptor_type = ACPI_DESC_TYPE_PARSER;
op->common.aml_opcode = opcode;
ACPI_DISASM_ONLY_MEMBERS(acpi_ut_safe_strncpy(op->common.aml_op_name,
(acpi_ps_get_opcode_info
(opcode))->name,
sizeof(op->common.
aml_op_name)));
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_alloc_op
*
* PARAMETERS: opcode - Opcode that will be stored in the new Op
* aml - Address of the opcode
*
* RETURN: Pointer to the new Op, null on failure
*
* DESCRIPTION: Allocate an acpi_op, choose op type (and thus size) based on
* opcode. A cache of opcodes is available for the pure
* GENERIC_OP, since this is by far the most commonly used.
*
******************************************************************************/
union acpi_parse_object *acpi_ps_alloc_op(u16 opcode, u8 *aml)
{
union acpi_parse_object *op;
const struct acpi_opcode_info *op_info;
u8 flags = ACPI_PARSEOP_GENERIC;
ACPI_FUNCTION_ENTRY();
op_info = acpi_ps_get_opcode_info(opcode);
/* Determine type of parse_op required */
if (op_info->flags & AML_DEFER) {
flags = ACPI_PARSEOP_DEFERRED;
} else if (op_info->flags & AML_NAMED) {
flags = ACPI_PARSEOP_NAMED_OBJECT;
} else if (opcode == AML_INT_BYTELIST_OP) {
flags = ACPI_PARSEOP_BYTELIST;
}
/* Allocate the minimum required size object */
if (flags == ACPI_PARSEOP_GENERIC) {
/* The generic op (default) is by far the most common (16 to 1) */
op = acpi_os_acquire_object(acpi_gbl_ps_node_cache);
} else {
/* Extended parseop */
op = acpi_os_acquire_object(acpi_gbl_ps_node_ext_cache);
}
/* Initialize the Op */
if (op) {
acpi_ps_init_op(op, opcode);
op->common.aml = aml;
op->common.flags = flags;
ASL_CV_CLEAR_OP_COMMENTS(op);
if (opcode == AML_SCOPE_OP) {
acpi_gbl_current_scope = op;
}
if (acpi_gbl_capture_comments) {
ASL_CV_TRANSFER_COMMENTS(op);
}
}
return (op);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_free_op
*
* PARAMETERS: op - Op to be freed
*
* RETURN: None.
*
* DESCRIPTION: Free an Op object. Either put it on the GENERIC_OP cache list
* or actually free it.
*
******************************************************************************/
void acpi_ps_free_op(union acpi_parse_object *op)
{
ACPI_FUNCTION_NAME(ps_free_op);
ASL_CV_CLEAR_OP_COMMENTS(op);
if (op->common.aml_opcode == AML_INT_RETURN_VALUE_OP) {
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"Free retval op: %p\n", op));
}
if (op->common.flags & ACPI_PARSEOP_GENERIC) {
(void)acpi_os_release_object(acpi_gbl_ps_node_cache, op);
} else {
(void)acpi_os_release_object(acpi_gbl_ps_node_ext_cache, op);
}
}
/*******************************************************************************
*
* FUNCTION: Utility functions
*
* DESCRIPTION: Low level character and object functions
*
******************************************************************************/
/*
* Is "c" a namestring lead character?
*/
u8 acpi_ps_is_leading_char(u32 c)
{
return ((u8) (c == '_' || (c >= 'A' && c <= 'Z')));
}
/*
* Get op's name (4-byte name segment) or 0 if unnamed
*/
u32 acpi_ps_get_name(union acpi_parse_object * op)
{
/* The "generic" object has no name associated with it */
if (op->common.flags & ACPI_PARSEOP_GENERIC) {
return (0);
}
/* Only the "Extended" parse objects have a name */
return (op->named.name);
}
/*
* Set op's name
*/
void acpi_ps_set_name(union acpi_parse_object *op, u32 name)
{
/* The "generic" object has no name associated with it */
if (op->common.flags & ACPI_PARSEOP_GENERIC) {
return;
}
op->named.name = name;
}
| linux-master | drivers/acpi/acpica/psutils.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: exmutex - ASL Mutex Acquire/Release functions
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"
#include "acevents.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("exmutex")
/* Local prototypes */
static void
acpi_ex_link_mutex(union acpi_operand_object *obj_desc,
struct acpi_thread_state *thread);
/*******************************************************************************
*
* FUNCTION: acpi_ex_unlink_mutex
*
* PARAMETERS: obj_desc - The mutex to be unlinked
*
* RETURN: None
*
* DESCRIPTION: Remove a mutex from the "AcquiredMutex" list
*
******************************************************************************/
void acpi_ex_unlink_mutex(union acpi_operand_object *obj_desc)
{
struct acpi_thread_state *thread = obj_desc->mutex.owner_thread;
if (!thread) {
return;
}
/* Doubly linked list */
if (obj_desc->mutex.next) {
(obj_desc->mutex.next)->mutex.prev = obj_desc->mutex.prev;
}
if (obj_desc->mutex.prev) {
(obj_desc->mutex.prev)->mutex.next = obj_desc->mutex.next;
/*
* Migrate the previous sync level associated with this mutex to
* the previous mutex on the list so that it may be preserved.
* This handles the case where several mutexes have been acquired
* at the same level, but are not released in opposite order.
*/
(obj_desc->mutex.prev)->mutex.original_sync_level =
obj_desc->mutex.original_sync_level;
} else {
thread->acquired_mutex_list = obj_desc->mutex.next;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_link_mutex
*
* PARAMETERS: obj_desc - The mutex to be linked
* thread - Current executing thread object
*
* RETURN: None
*
* DESCRIPTION: Add a mutex to the "AcquiredMutex" list for this walk
*
******************************************************************************/
static void
acpi_ex_link_mutex(union acpi_operand_object *obj_desc,
struct acpi_thread_state *thread)
{
union acpi_operand_object *list_head;
list_head = thread->acquired_mutex_list;
/* This object will be the first object in the list */
obj_desc->mutex.prev = NULL;
obj_desc->mutex.next = list_head;
/* Update old first object to point back to this object */
if (list_head) {
list_head->mutex.prev = obj_desc;
}
/* Update list head */
thread->acquired_mutex_list = obj_desc;
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_acquire_mutex_object
*
* PARAMETERS: timeout - Timeout in milliseconds
* obj_desc - Mutex object
* thread_id - Current thread state
*
* RETURN: Status
*
* DESCRIPTION: Acquire an AML mutex, low-level interface. Provides a common
* path that supports multiple acquires by the same thread.
*
* MUTEX: Interpreter must be locked
*
* NOTE: This interface is called from three places:
* 1) From acpi_ex_acquire_mutex, via an AML Acquire() operator
* 2) From acpi_ex_acquire_global_lock when an AML Field access requires the
* global lock
* 3) From the external interface, acpi_acquire_global_lock
*
******************************************************************************/
acpi_status
acpi_ex_acquire_mutex_object(u16 timeout,
union acpi_operand_object *obj_desc,
acpi_thread_id thread_id)
{
acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ex_acquire_mutex_object, obj_desc);
if (!obj_desc) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Support for multiple acquires by the owning thread */
if (obj_desc->mutex.thread_id == thread_id) {
/*
* The mutex is already owned by this thread, just increment the
* acquisition depth
*/
obj_desc->mutex.acquisition_depth++;
return_ACPI_STATUS(AE_OK);
}
/* Acquire the mutex, wait if necessary. Special case for Global Lock */
if (obj_desc == acpi_gbl_global_lock_mutex) {
status = acpi_ev_acquire_global_lock(timeout);
} else {
status =
acpi_ex_system_wait_mutex(obj_desc->mutex.os_mutex,
timeout);
}
if (ACPI_FAILURE(status)) {
/* Includes failure from a timeout on time_desc */
return_ACPI_STATUS(status);
}
/* Acquired the mutex: update mutex object */
obj_desc->mutex.thread_id = thread_id;
obj_desc->mutex.acquisition_depth = 1;
obj_desc->mutex.original_sync_level = 0;
obj_desc->mutex.owner_thread = NULL; /* Used only for AML Acquire() */
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_acquire_mutex
*
* PARAMETERS: time_desc - Timeout integer
* obj_desc - Mutex object
* walk_state - Current method execution state
*
* RETURN: Status
*
* DESCRIPTION: Acquire an AML mutex
*
******************************************************************************/
acpi_status
acpi_ex_acquire_mutex(union acpi_operand_object *time_desc,
union acpi_operand_object *obj_desc,
struct acpi_walk_state *walk_state)
{
acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ex_acquire_mutex, obj_desc);
if (!obj_desc) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Must have a valid thread state struct */
if (!walk_state->thread) {
ACPI_ERROR((AE_INFO,
"Cannot acquire Mutex [%4.4s], null thread info",
acpi_ut_get_node_name(obj_desc->mutex.node)));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
/*
* Current sync level must be less than or equal to the sync level
* of the mutex. This mechanism provides some deadlock prevention.
*/
if (walk_state->thread->current_sync_level > obj_desc->mutex.sync_level) {
ACPI_ERROR((AE_INFO,
"Cannot acquire Mutex [%4.4s], "
"current SyncLevel is too large (%u)",
acpi_ut_get_node_name(obj_desc->mutex.node),
walk_state->thread->current_sync_level));
return_ACPI_STATUS(AE_AML_MUTEX_ORDER);
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Acquiring: Mutex SyncLevel %u, Thread SyncLevel %u, "
"Depth %u TID %p\n",
obj_desc->mutex.sync_level,
walk_state->thread->current_sync_level,
obj_desc->mutex.acquisition_depth,
walk_state->thread));
status = acpi_ex_acquire_mutex_object((u16)time_desc->integer.value,
obj_desc,
walk_state->thread->thread_id);
if (ACPI_SUCCESS(status) && obj_desc->mutex.acquisition_depth == 1) {
/* Save Thread object, original/current sync levels */
obj_desc->mutex.owner_thread = walk_state->thread;
obj_desc->mutex.original_sync_level =
walk_state->thread->current_sync_level;
walk_state->thread->current_sync_level =
obj_desc->mutex.sync_level;
/* Link the mutex to the current thread for force-unlock at method exit */
acpi_ex_link_mutex(obj_desc, walk_state->thread);
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Acquired: Mutex SyncLevel %u, Thread SyncLevel %u, Depth %u\n",
obj_desc->mutex.sync_level,
walk_state->thread->current_sync_level,
obj_desc->mutex.acquisition_depth));
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_release_mutex_object
*
* PARAMETERS: obj_desc - The object descriptor for this op
*
* RETURN: Status
*
* DESCRIPTION: Release a previously acquired Mutex, low level interface.
* Provides a common path that supports multiple releases (after
* previous multiple acquires) by the same thread.
*
* MUTEX: Interpreter must be locked
*
* NOTE: This interface is called from three places:
* 1) From acpi_ex_release_mutex, via an AML Acquire() operator
* 2) From acpi_ex_release_global_lock when an AML Field access requires the
* global lock
* 3) From the external interface, acpi_release_global_lock
*
******************************************************************************/
acpi_status acpi_ex_release_mutex_object(union acpi_operand_object *obj_desc)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(ex_release_mutex_object);
if (obj_desc->mutex.acquisition_depth == 0) {
return_ACPI_STATUS(AE_NOT_ACQUIRED);
}
/* Match multiple Acquires with multiple Releases */
obj_desc->mutex.acquisition_depth--;
if (obj_desc->mutex.acquisition_depth != 0) {
/* Just decrement the depth and return */
return_ACPI_STATUS(AE_OK);
}
if (obj_desc->mutex.owner_thread) {
/* Unlink the mutex from the owner's list */
acpi_ex_unlink_mutex(obj_desc);
obj_desc->mutex.owner_thread = NULL;
}
/* Release the mutex, special case for Global Lock */
if (obj_desc == acpi_gbl_global_lock_mutex) {
status = acpi_ev_release_global_lock();
} else {
acpi_os_release_mutex(obj_desc->mutex.os_mutex);
}
/* Clear mutex info */
obj_desc->mutex.thread_id = 0;
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_release_mutex
*
* PARAMETERS: obj_desc - The object descriptor for this op
* walk_state - Current method execution state
*
* RETURN: Status
*
* DESCRIPTION: Release a previously acquired Mutex.
*
******************************************************************************/
acpi_status
acpi_ex_release_mutex(union acpi_operand_object *obj_desc,
struct acpi_walk_state *walk_state)
{
u8 previous_sync_level;
struct acpi_thread_state *owner_thread;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(ex_release_mutex);
if (!obj_desc) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
owner_thread = obj_desc->mutex.owner_thread;
/* The mutex must have been previously acquired in order to release it */
if (!owner_thread) {
ACPI_ERROR((AE_INFO,
"Cannot release Mutex [%4.4s], not acquired",
acpi_ut_get_node_name(obj_desc->mutex.node)));
return_ACPI_STATUS(AE_AML_MUTEX_NOT_ACQUIRED);
}
/* Must have a valid thread ID */
if (!walk_state->thread) {
ACPI_ERROR((AE_INFO,
"Cannot release Mutex [%4.4s], null thread info",
acpi_ut_get_node_name(obj_desc->mutex.node)));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
/*
* The Mutex is owned, but this thread must be the owner.
* Special case for Global Lock, any thread can release
*/
if ((owner_thread->thread_id != walk_state->thread->thread_id) &&
(obj_desc != acpi_gbl_global_lock_mutex)) {
ACPI_ERROR((AE_INFO,
"Thread %u cannot release Mutex [%4.4s] acquired by thread %u",
(u32)walk_state->thread->thread_id,
acpi_ut_get_node_name(obj_desc->mutex.node),
(u32)owner_thread->thread_id));
return_ACPI_STATUS(AE_AML_NOT_OWNER);
}
/*
* The sync level of the mutex must be equal to the current sync level. In
* other words, the current level means that at least one mutex at that
* level is currently being held. Attempting to release a mutex of a
* different level can only mean that the mutex ordering rule is being
* violated. This behavior is clarified in ACPI 4.0 specification.
*/
if (obj_desc->mutex.sync_level != owner_thread->current_sync_level) {
ACPI_ERROR((AE_INFO,
"Cannot release Mutex [%4.4s], SyncLevel mismatch: "
"mutex %u current %u",
acpi_ut_get_node_name(obj_desc->mutex.node),
obj_desc->mutex.sync_level,
walk_state->thread->current_sync_level));
return_ACPI_STATUS(AE_AML_MUTEX_ORDER);
}
/*
* Get the previous sync_level from the head of the acquired mutex list.
* This handles the case where several mutexes at the same level have been
* acquired, but are not released in reverse order.
*/
previous_sync_level =
owner_thread->acquired_mutex_list->mutex.original_sync_level;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Releasing: Object SyncLevel %u, Thread SyncLevel %u, "
"Prev SyncLevel %u, Depth %u TID %p\n",
obj_desc->mutex.sync_level,
walk_state->thread->current_sync_level,
previous_sync_level,
obj_desc->mutex.acquisition_depth,
walk_state->thread));
status = acpi_ex_release_mutex_object(obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (obj_desc->mutex.acquisition_depth == 0) {
/* Restore the previous sync_level */
owner_thread->current_sync_level = previous_sync_level;
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Released: Object SyncLevel %u, Thread SyncLevel, %u, "
"Prev SyncLevel %u, Depth %u\n",
obj_desc->mutex.sync_level,
walk_state->thread->current_sync_level,
previous_sync_level,
obj_desc->mutex.acquisition_depth));
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_release_all_mutexes
*
* PARAMETERS: thread - Current executing thread object
*
* RETURN: Status
*
* DESCRIPTION: Release all mutexes held by this thread
*
* NOTE: This function is called as the thread is exiting the interpreter.
* Mutexes are not released when an individual control method is exited, but
* only when the parent thread actually exits the interpreter. This allows one
* method to acquire a mutex, and a different method to release it, as long as
* this is performed underneath a single parent control method.
*
******************************************************************************/
void acpi_ex_release_all_mutexes(struct acpi_thread_state *thread)
{
union acpi_operand_object *next = thread->acquired_mutex_list;
union acpi_operand_object *obj_desc;
ACPI_FUNCTION_TRACE(ex_release_all_mutexes);
/* Traverse the list of owned mutexes, releasing each one */
while (next) {
obj_desc = next;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Mutex [%4.4s] force-release, SyncLevel %u Depth %u\n",
obj_desc->mutex.node->name.ascii,
obj_desc->mutex.sync_level,
obj_desc->mutex.acquisition_depth));
/* Release the mutex, special case for Global Lock */
if (obj_desc == acpi_gbl_global_lock_mutex) {
/* Ignore errors */
(void)acpi_ev_release_global_lock();
} else {
acpi_os_release_mutex(obj_desc->mutex.os_mutex);
}
/* Update Thread sync_level (Last mutex is the important one) */
thread->current_sync_level =
obj_desc->mutex.original_sync_level;
/* Mark mutex unowned */
next = obj_desc->mutex.next;
obj_desc->mutex.prev = NULL;
obj_desc->mutex.next = NULL;
obj_desc->mutex.acquisition_depth = 0;
obj_desc->mutex.owner_thread = NULL;
obj_desc->mutex.thread_id = 0;
}
return_VOID;
}
| linux-master | drivers/acpi/acpica/exmutex.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: nsdump - table dumping routines for debug
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
/* TBD: This entire module is apparently obsolete and should be removed */
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsdumpdv")
#ifdef ACPI_OBSOLETE_FUNCTIONS
#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
#include "acnamesp.h"
/*******************************************************************************
*
* FUNCTION: acpi_ns_dump_one_device
*
* PARAMETERS: handle - Node to be dumped
* level - Nesting level of the handle
* context - Passed into walk_namespace
* return_value - Not used
*
* RETURN: Status
*
* DESCRIPTION: Dump a single Node that represents a device
* This procedure is a user_function called by acpi_ns_walk_namespace.
*
******************************************************************************/
static acpi_status
acpi_ns_dump_one_device(acpi_handle obj_handle,
u32 level, void *context, void **return_value)
{
struct acpi_buffer buffer;
struct acpi_device_info *info;
acpi_status status;
u32 i;
ACPI_FUNCTION_NAME(ns_dump_one_device);
status =
acpi_ns_dump_one_object(obj_handle, level, context, return_value);
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_get_object_info(obj_handle, &buffer);
if (ACPI_SUCCESS(status)) {
info = buffer.pointer;
for (i = 0; i < level; i++) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_TABLES, " "));
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_TABLES,
" HID: %s, ADR: %8.8X%8.8X\n",
info->hardware_id.value,
ACPI_FORMAT_UINT64(info->address)));
ACPI_FREE(info);
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_dump_root_devices
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Dump all objects of type "device"
*
******************************************************************************/
void acpi_ns_dump_root_devices(void)
{
acpi_handle sys_bus_handle;
acpi_status status;
ACPI_FUNCTION_NAME(ns_dump_root_devices);
/* Only dump the table if tracing is enabled */
if (!(ACPI_LV_TABLES & acpi_dbg_level)) {
return;
}
status = acpi_get_handle(NULL, METHOD_NAME__SB_, &sys_bus_handle);
if (ACPI_FAILURE(status)) {
return;
}
ACPI_DEBUG_PRINT((ACPI_DB_TABLES,
"Display of all devices in the namespace:\n"));
status = acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, sys_bus_handle,
ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK,
acpi_ns_dump_one_device, NULL, NULL,
NULL);
}
#endif
#endif
| linux-master | drivers/acpi/acpica/nsdumpdv.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: rsio - IO and DMA resource descriptors
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acresrc.h"
#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME("rsio")
/*******************************************************************************
*
* acpi_rs_convert_io
*
******************************************************************************/
struct acpi_rsconvert_info acpi_rs_convert_io[5] = {
{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_IO,
ACPI_RS_SIZE(struct acpi_resource_io),
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_io)},
{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IO,
sizeof(struct aml_resource_io),
0},
/* Decode flag */
{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.io.io_decode),
AML_OFFSET(io.flags),
0},
/*
* These fields are contiguous in both the source and destination:
* Address Alignment
* Length
* Minimum Base Address
* Maximum Base Address
*/
{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.io.alignment),
AML_OFFSET(io.alignment),
2},
{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.io.minimum),
AML_OFFSET(io.minimum),
2}
};
/*******************************************************************************
*
* acpi_rs_convert_fixed_io
*
******************************************************************************/
struct acpi_rsconvert_info acpi_rs_convert_fixed_io[4] = {
{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_FIXED_IO,
ACPI_RS_SIZE(struct acpi_resource_fixed_io),
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_fixed_io)},
{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_FIXED_IO,
sizeof(struct aml_resource_fixed_io),
0},
/*
* These fields are contiguous in both the source and destination:
* Base Address
* Length
*/
{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.fixed_io.address_length),
AML_OFFSET(fixed_io.address_length),
1},
{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.fixed_io.address),
AML_OFFSET(fixed_io.address),
1}
};
/*******************************************************************************
*
* acpi_rs_convert_generic_reg
*
******************************************************************************/
struct acpi_rsconvert_info acpi_rs_convert_generic_reg[4] = {
{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_GENERIC_REGISTER,
ACPI_RS_SIZE(struct acpi_resource_generic_register),
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_generic_reg)},
{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_GENERIC_REGISTER,
sizeof(struct aml_resource_generic_register),
0},
/*
* These fields are contiguous in both the source and destination:
* Address Space ID
* Register Bit Width
* Register Bit Offset
* Access Size
*/
{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.generic_reg.space_id),
AML_OFFSET(generic_reg.address_space_id),
4},
/* Get the Register Address */
{ACPI_RSC_MOVE64, ACPI_RS_OFFSET(data.generic_reg.address),
AML_OFFSET(generic_reg.address),
1}
};
/*******************************************************************************
*
* acpi_rs_convert_end_dpf
*
******************************************************************************/
struct acpi_rsconvert_info acpi_rs_convert_end_dpf[2] = {
{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_END_DEPENDENT,
ACPI_RS_SIZE_MIN,
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_end_dpf)},
{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_END_DEPENDENT,
sizeof(struct aml_resource_end_dependent),
0}
};
/*******************************************************************************
*
* acpi_rs_convert_end_tag
*
******************************************************************************/
struct acpi_rsconvert_info acpi_rs_convert_end_tag[2] = {
{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_END_TAG,
ACPI_RS_SIZE_MIN,
ACPI_RSC_TABLE_SIZE(acpi_rs_convert_end_tag)},
/*
* Note: The checksum field is set to zero, meaning that the resource
* data is treated as if the checksum operation succeeded.
* (ACPI Spec 1.0b Section 6.4.2.8)
*/
{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_END_TAG,
sizeof(struct aml_resource_end_tag),
0}
};
/*******************************************************************************
*
* acpi_rs_get_start_dpf
*
******************************************************************************/
struct acpi_rsconvert_info acpi_rs_get_start_dpf[6] = {
{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_START_DEPENDENT,
ACPI_RS_SIZE(struct acpi_resource_start_dependent),
ACPI_RSC_TABLE_SIZE(acpi_rs_get_start_dpf)},
/* Defaults for Compatibility and Performance priorities */
{ACPI_RSC_SET8, ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
ACPI_ACCEPTABLE_CONFIGURATION,
2},
/* Get the descriptor length (0 or 1 for Start Dpf descriptor) */
{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
AML_OFFSET(start_dpf.descriptor_type),
0},
/* All done if there is no flag byte present in the descriptor */
{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 1},
/* Flag byte is present, get the flags */
{ACPI_RSC_2BITFLAG,
ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
AML_OFFSET(start_dpf.flags),
0},
{ACPI_RSC_2BITFLAG,
ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
AML_OFFSET(start_dpf.flags),
2}
};
/*******************************************************************************
*
* acpi_rs_set_start_dpf
*
******************************************************************************/
struct acpi_rsconvert_info acpi_rs_set_start_dpf[10] = {
/* Start with a default descriptor of length 1 */
{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_START_DEPENDENT,
sizeof(struct aml_resource_start_dependent),
ACPI_RSC_TABLE_SIZE(acpi_rs_set_start_dpf)},
/* Set the default flag values */
{ACPI_RSC_2BITFLAG,
ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
AML_OFFSET(start_dpf.flags),
0},
{ACPI_RSC_2BITFLAG,
ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
AML_OFFSET(start_dpf.flags),
2},
/*
* All done if the output descriptor length is required to be 1
* (i.e., optimization to 0 bytes cannot be attempted)
*/
{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
1},
/* Set length to 0 bytes (no flags byte) */
{ACPI_RSC_LENGTH, 0, 0,
sizeof(struct aml_resource_start_dependent_noprio)},
/*
* All done if the output descriptor length is required to be 0.
*
* TBD: Perhaps we should check for error if input flags are not
* compatible with a 0-byte descriptor.
*/
{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
0},
/* Reset length to 1 byte (descriptor with flags byte) */
{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_start_dependent)},
/*
* All done if flags byte is necessary -- if either priority value
* is not ACPI_ACCEPTABLE_CONFIGURATION
*/
{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
ACPI_ACCEPTABLE_CONFIGURATION},
{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
ACPI_ACCEPTABLE_CONFIGURATION},
/* Flag byte is not necessary */
{ACPI_RSC_LENGTH, 0, 0,
sizeof(struct aml_resource_start_dependent_noprio)}
};
| linux-master | drivers/acpi/acpica/rsio.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: utstring - Common functions for strings and characters
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utstring")
/*******************************************************************************
*
* FUNCTION: acpi_ut_print_string
*
* PARAMETERS: string - Null terminated ASCII string
* max_length - Maximum output length. Used to constrain the
* length of strings during debug output only.
*
* RETURN: None
*
* DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape
* sequences.
*
******************************************************************************/
void acpi_ut_print_string(char *string, u16 max_length)
{
u32 i;
if (!string) {
acpi_os_printf("<\"NULL STRING PTR\">");
return;
}
acpi_os_printf("\"");
for (i = 0; (i < max_length) && string[i]; i++) {
/* Escape sequences */
switch (string[i]) {
case 0x07:
acpi_os_printf("\\a"); /* BELL */
break;
case 0x08:
acpi_os_printf("\\b"); /* BACKSPACE */
break;
case 0x0C:
acpi_os_printf("\\f"); /* FORMFEED */
break;
case 0x0A:
acpi_os_printf("\\n"); /* LINEFEED */
break;
case 0x0D:
acpi_os_printf("\\r"); /* CARRIAGE RETURN */
break;
case 0x09:
acpi_os_printf("\\t"); /* HORIZONTAL TAB */
break;
case 0x0B:
acpi_os_printf("\\v"); /* VERTICAL TAB */
break;
case '\'': /* Single Quote */
case '\"': /* Double Quote */
case '\\': /* Backslash */
acpi_os_printf("\\%c", (int)string[i]);
break;
default:
/* Check for printable character or hex escape */
if (isprint((int)string[i])) {
/* This is a normal character */
acpi_os_printf("%c", (int)string[i]);
} else {
/* All others will be Hex escapes */
acpi_os_printf("\\x%2.2X", (s32)string[i]);
}
break;
}
}
acpi_os_printf("\"");
if (i == max_length && string[i]) {
acpi_os_printf("...");
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_repair_name
*
* PARAMETERS: name - The ACPI name to be repaired
*
* RETURN: Repaired version of the name
*
* DESCRIPTION: Repair an ACPI name: Change invalid characters to '*' and
* return the new name. NOTE: the Name parameter must reside in
* read/write memory, cannot be a const.
*
* An ACPI Name must consist of valid ACPI characters. We will repair the name
* if necessary because we don't want to abort because of this, but we want
* all namespace names to be printable. A warning message is appropriate.
*
* This issue came up because there are in fact machines that exhibit
* this problem, and we want to be able to enable ACPI support for them,
* even though there are a few bad names.
*
******************************************************************************/
void acpi_ut_repair_name(char *name)
{
u32 i;
u8 found_bad_char = FALSE;
u32 original_name;
ACPI_FUNCTION_NAME(ut_repair_name);
/*
* Special case for the root node. This can happen if we get an
* error during the execution of module-level code.
*/
if (ACPI_COMPARE_NAMESEG(name, ACPI_ROOT_PATHNAME)) {
return;
}
ACPI_COPY_NAMESEG(&original_name, &name[0]);
/* Check each character in the name */
for (i = 0; i < ACPI_NAMESEG_SIZE; i++) {
if (acpi_ut_valid_name_char(name[i], i)) {
continue;
}
/*
* Replace a bad character with something printable, yet technically
* "odd". This prevents any collisions with existing "good"
* names in the namespace.
*/
name[i] = '_';
found_bad_char = TRUE;
}
if (found_bad_char) {
/* Report warning only if in strict mode or debug mode */
if (!acpi_gbl_enable_interpreter_slack) {
ACPI_WARNING((AE_INFO,
"Invalid character(s) in name (0x%.8X) %p, repaired: [%4.4s]",
original_name, name, &name[0]));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Invalid character(s) in name (0x%.8X), repaired: [%4.4s]",
original_name, name));
}
}
}
#if defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP
/*******************************************************************************
*
* FUNCTION: ut_convert_backslashes
*
* PARAMETERS: pathname - File pathname string to be converted
*
* RETURN: Modifies the input Pathname
*
* DESCRIPTION: Convert all backslashes (0x5C) to forward slashes (0x2F) within
* the entire input file pathname string.
*
******************************************************************************/
void ut_convert_backslashes(char *pathname)
{
if (!pathname) {
return;
}
while (*pathname) {
if (*pathname == '\\') {
*pathname = '/';
}
pathname++;
}
}
#endif
| linux-master | drivers/acpi/acpica/utstring.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: utdecode - Utility decoding routines (value-to-string)
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "amlcode.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utdecode")
/*
* Properties of the ACPI Object Types, both internal and external.
* The table is indexed by values of acpi_object_type
*/
const u8 acpi_gbl_ns_properties[ACPI_NUM_NS_TYPES] = {
ACPI_NS_NORMAL, /* 00 Any */
ACPI_NS_NORMAL, /* 01 Number */
ACPI_NS_NORMAL, /* 02 String */
ACPI_NS_NORMAL, /* 03 Buffer */
ACPI_NS_NORMAL, /* 04 Package */
ACPI_NS_NORMAL, /* 05 field_unit */
ACPI_NS_NEWSCOPE, /* 06 Device */
ACPI_NS_NORMAL, /* 07 Event */
ACPI_NS_NEWSCOPE, /* 08 Method */
ACPI_NS_NORMAL, /* 09 Mutex */
ACPI_NS_NORMAL, /* 10 Region */
ACPI_NS_NEWSCOPE, /* 11 Power */
ACPI_NS_NEWSCOPE, /* 12 Processor */
ACPI_NS_NEWSCOPE, /* 13 Thermal */
ACPI_NS_NORMAL, /* 14 buffer_field */
ACPI_NS_NORMAL, /* 15 ddb_handle */
ACPI_NS_NORMAL, /* 16 Debug Object */
ACPI_NS_NORMAL, /* 17 def_field */
ACPI_NS_NORMAL, /* 18 bank_field */
ACPI_NS_NORMAL, /* 19 index_field */
ACPI_NS_NORMAL, /* 20 Reference */
ACPI_NS_NORMAL, /* 21 Alias */
ACPI_NS_NORMAL, /* 22 method_alias */
ACPI_NS_NORMAL, /* 23 Notify */
ACPI_NS_NORMAL, /* 24 Address Handler */
ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 25 Resource Desc */
ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 26 Resource Field */
ACPI_NS_NEWSCOPE, /* 27 Scope */
ACPI_NS_NORMAL, /* 28 Extra */
ACPI_NS_NORMAL, /* 29 Data */
ACPI_NS_NORMAL /* 30 Invalid */
};
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_region_name
*
* PARAMETERS: Space ID - ID for the region
*
* RETURN: Decoded region space_id name
*
* DESCRIPTION: Translate a Space ID into a name string (Debug only)
*
******************************************************************************/
/* Region type decoding */
const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
"SystemMemory", /* 0x00 */
"SystemIO", /* 0x01 */
"PCI_Config", /* 0x02 */
"EmbeddedControl", /* 0x03 */
"SMBus", /* 0x04 */
"SystemCMOS", /* 0x05 */
"PCIBARTarget", /* 0x06 */
"IPMI", /* 0x07 */
"GeneralPurposeIo", /* 0x08 */
"GenericSerialBus", /* 0x09 */
"PCC", /* 0x0A */
"PlatformRtMechanism" /* 0x0B */
};
const char *acpi_ut_get_region_name(u8 space_id)
{
if (space_id >= ACPI_USER_REGION_BEGIN) {
return ("UserDefinedRegion");
} else if (space_id == ACPI_ADR_SPACE_DATA_TABLE) {
return ("DataTable");
} else if (space_id == ACPI_ADR_SPACE_FIXED_HARDWARE) {
return ("FunctionalFixedHW");
} else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) {
return ("InvalidSpaceId");
}
return (acpi_gbl_region_types[space_id]);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_event_name
*
* PARAMETERS: event_id - Fixed event ID
*
* RETURN: Decoded event ID name
*
* DESCRIPTION: Translate a Event ID into a name string (Debug only)
*
******************************************************************************/
/* Event type decoding */
static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = {
"PM_Timer",
"GlobalLock",
"PowerButton",
"SleepButton",
"RealTimeClock",
};
const char *acpi_ut_get_event_name(u32 event_id)
{
if (event_id > ACPI_EVENT_MAX) {
return ("InvalidEventID");
}
return (acpi_gbl_event_types[event_id]);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_type_name
*
* PARAMETERS: type - An ACPI object type
*
* RETURN: Decoded ACPI object type name
*
* DESCRIPTION: Translate a Type ID into a name string (Debug only)
*
******************************************************************************/
/*
* Elements of acpi_gbl_ns_type_names below must match
* one-to-one with values of acpi_object_type
*
* The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
* when stored in a table it really means that we have thus far seen no
* evidence to indicate what type is actually going to be stored for this
& entry.
*/
static const char acpi_gbl_bad_type[] = "UNDEFINED";
/* Printable names of the ACPI object types */
static const char *acpi_gbl_ns_type_names[] = {
/* 00 */ "Untyped",
/* 01 */ "Integer",
/* 02 */ "String",
/* 03 */ "Buffer",
/* 04 */ "Package",
/* 05 */ "FieldUnit",
/* 06 */ "Device",
/* 07 */ "Event",
/* 08 */ "Method",
/* 09 */ "Mutex",
/* 10 */ "Region",
/* 11 */ "Power",
/* 12 */ "Processor",
/* 13 */ "Thermal",
/* 14 */ "BufferField",
/* 15 */ "DdbHandle",
/* 16 */ "DebugObject",
/* 17 */ "RegionField",
/* 18 */ "BankField",
/* 19 */ "IndexField",
/* 20 */ "Reference",
/* 21 */ "Alias",
/* 22 */ "MethodAlias",
/* 23 */ "Notify",
/* 24 */ "AddrHandler",
/* 25 */ "ResourceDesc",
/* 26 */ "ResourceFld",
/* 27 */ "Scope",
/* 28 */ "Extra",
/* 29 */ "Data",
/* 30 */ "Invalid"
};
const char *acpi_ut_get_type_name(acpi_object_type type)
{
if (type > ACPI_TYPE_INVALID) {
return (acpi_gbl_bad_type);
}
return (acpi_gbl_ns_type_names[type]);
}
const char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
{
ACPI_FUNCTION_TRACE(ut_get_object_type_name);
if (!obj_desc) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Null Object Descriptor\n"));
return_STR("[NULL Object Descriptor]");
}
/* These descriptor types share a common area */
if ((ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) &&
(ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_NAMED)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Invalid object descriptor type: 0x%2.2X [%s] (%p)\n",
ACPI_GET_DESCRIPTOR_TYPE(obj_desc),
acpi_ut_get_descriptor_name(obj_desc),
obj_desc));
return_STR("Invalid object");
}
return_STR(acpi_ut_get_type_name(obj_desc->common.type));
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_node_name
*
* PARAMETERS: object - A namespace node
*
* RETURN: ASCII name of the node
*
* DESCRIPTION: Validate the node and return the node's ACPI name.
*
******************************************************************************/
const char *acpi_ut_get_node_name(void *object)
{
struct acpi_namespace_node *node = (struct acpi_namespace_node *)object;
/* Must return a string of exactly 4 characters == ACPI_NAMESEG_SIZE */
if (!object) {
return ("NULL");
}
/* Check for Root node */
if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) {
return ("\"\\\" ");
}
/* Descriptor must be a namespace node */
if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
return ("####");
}
/*
* Ensure name is valid. The name was validated/repaired when the node
* was created, but make sure it has not been corrupted.
*/
acpi_ut_repair_name(node->name.ascii);
/* Return the name */
return (node->name.ascii);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_descriptor_name
*
* PARAMETERS: object - An ACPI object
*
* RETURN: Decoded name of the descriptor type
*
* DESCRIPTION: Validate object and return the descriptor type
*
******************************************************************************/
/* Printable names of object descriptor types */
static const char *acpi_gbl_desc_type_names[] = {
/* 00 */ "Not a Descriptor",
/* 01 */ "Cached Object",
/* 02 */ "State-Generic",
/* 03 */ "State-Update",
/* 04 */ "State-Package",
/* 05 */ "State-Control",
/* 06 */ "State-RootParseScope",
/* 07 */ "State-ParseScope",
/* 08 */ "State-WalkScope",
/* 09 */ "State-Result",
/* 10 */ "State-Notify",
/* 11 */ "State-Thread",
/* 12 */ "Tree Walk State",
/* 13 */ "Parse Tree Op",
/* 14 */ "Operand Object",
/* 15 */ "Namespace Node"
};
const char *acpi_ut_get_descriptor_name(void *object)
{
if (!object) {
return ("NULL OBJECT");
}
if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) {
return ("Not a Descriptor");
}
return (acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE(object)]);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_reference_name
*
* PARAMETERS: object - An ACPI reference object
*
* RETURN: Decoded name of the type of reference
*
* DESCRIPTION: Decode a reference object sub-type to a string.
*
******************************************************************************/
/* Printable names of reference object sub-types */
static const char *acpi_gbl_ref_class_names[] = {
/* 00 */ "Local",
/* 01 */ "Argument",
/* 02 */ "RefOf",
/* 03 */ "Index",
/* 04 */ "DdbHandle",
/* 05 */ "Named Object",
/* 06 */ "Debug"
};
const char *acpi_ut_get_reference_name(union acpi_operand_object *object)
{
if (!object) {
return ("NULL Object");
}
if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) {
return ("Not an Operand object");
}
if (object->common.type != ACPI_TYPE_LOCAL_REFERENCE) {
return ("Not a Reference object");
}
if (object->reference.class > ACPI_REFCLASS_MAX) {
return ("Unknown Reference class");
}
return (acpi_gbl_ref_class_names[object->reference.class]);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_mutex_name
*
* PARAMETERS: mutex_id - The predefined ID for this mutex.
*
* RETURN: Decoded name of the internal mutex
*
* DESCRIPTION: Translate a mutex ID into a name string (Debug only)
*
******************************************************************************/
/* Names for internal mutex objects, used for debug output */
static const char *acpi_gbl_mutex_names[ACPI_NUM_MUTEX] = {
"ACPI_MTX_Interpreter",
"ACPI_MTX_Namespace",
"ACPI_MTX_Tables",
"ACPI_MTX_Events",
"ACPI_MTX_Caches",
"ACPI_MTX_Memory",
};
const char *acpi_ut_get_mutex_name(u32 mutex_id)
{
if (mutex_id > ACPI_MAX_MUTEX) {
return ("Invalid Mutex ID");
}
return (acpi_gbl_mutex_names[mutex_id]);
}
#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
/*
* Strings and procedures used for debug only
*/
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_notify_name
*
* PARAMETERS: notify_value - Value from the Notify() request
*
* RETURN: Decoded name for the notify value
*
* DESCRIPTION: Translate a Notify Value to a notify namestring.
*
******************************************************************************/
/* Names for Notify() values, used for debug output */
static const char *acpi_gbl_generic_notify[ACPI_GENERIC_NOTIFY_MAX + 1] = {
/* 00 */ "Bus Check",
/* 01 */ "Device Check",
/* 02 */ "Device Wake",
/* 03 */ "Eject Request",
/* 04 */ "Device Check Light",
/* 05 */ "Frequency Mismatch",
/* 06 */ "Bus Mode Mismatch",
/* 07 */ "Power Fault",
/* 08 */ "Capabilities Check",
/* 09 */ "Device PLD Check",
/* 0A */ "Reserved",
/* 0B */ "System Locality Update",
/* 0C */ "Reserved (was previously Shutdown Request)",
/* Reserved in ACPI 6.0 */
/* 0D */ "System Resource Affinity Update",
/* 0E */ "Heterogeneous Memory Attributes Update",
/* ACPI 6.2 */
/* 0F */ "Error Disconnect Recover"
/* ACPI 6.3 */
};
static const char *acpi_gbl_device_notify[5] = {
/* 80 */ "Status Change",
/* 81 */ "Information Change",
/* 82 */ "Device-Specific Change",
/* 83 */ "Device-Specific Change",
/* 84 */ "Reserved"
};
static const char *acpi_gbl_processor_notify[5] = {
/* 80 */ "Performance Capability Change",
/* 81 */ "C-State Change",
/* 82 */ "Throttling Capability Change",
/* 83 */ "Guaranteed Change",
/* 84 */ "Minimum Excursion"
};
static const char *acpi_gbl_thermal_notify[5] = {
/* 80 */ "Thermal Status Change",
/* 81 */ "Thermal Trip Point Change",
/* 82 */ "Thermal Device List Change",
/* 83 */ "Thermal Relationship Change",
/* 84 */ "Reserved"
};
const char *acpi_ut_get_notify_name(u32 notify_value, acpi_object_type type)
{
/* 00 - 0F are "common to all object types" (from ACPI Spec) */
if (notify_value <= ACPI_GENERIC_NOTIFY_MAX) {
return (acpi_gbl_generic_notify[notify_value]);
}
/* 10 - 7F are reserved */
if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
return ("Reserved");
}
/* 80 - 84 are per-object-type */
if (notify_value <= ACPI_SPECIFIC_NOTIFY_MAX) {
switch (type) {
case ACPI_TYPE_ANY:
case ACPI_TYPE_DEVICE:
return (acpi_gbl_device_notify[notify_value - 0x80]);
case ACPI_TYPE_PROCESSOR:
return (acpi_gbl_processor_notify[notify_value - 0x80]);
case ACPI_TYPE_THERMAL:
return (acpi_gbl_thermal_notify[notify_value - 0x80]);
default:
return ("Target object type does not support notifies");
}
}
/* 84 - BF are device-specific */
if (notify_value <= ACPI_MAX_DEVICE_SPECIFIC_NOTIFY) {
return ("Device-Specific");
}
/* C0 and above are hardware-specific */
return ("Hardware-Specific");
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_argument_type_name
*
* PARAMETERS: arg_type - an ARGP_* parser argument type
*
* RETURN: Decoded ARGP_* type
*
* DESCRIPTION: Decode an ARGP_* parser type, as defined in the amlcode.h file,
* and used in the acopcode.h file. For example, ARGP_TERMARG.
* Used for debug only.
*
******************************************************************************/
static const char *acpi_gbl_argument_type[20] = {
/* 00 */ "Unknown ARGP",
/* 01 */ "ByteData",
/* 02 */ "ByteList",
/* 03 */ "CharList",
/* 04 */ "DataObject",
/* 05 */ "DataObjectList",
/* 06 */ "DWordData",
/* 07 */ "FieldList",
/* 08 */ "Name",
/* 09 */ "NameString",
/* 0A */ "ObjectList",
/* 0B */ "PackageLength",
/* 0C */ "SuperName",
/* 0D */ "Target",
/* 0E */ "TermArg",
/* 0F */ "TermList",
/* 10 */ "WordData",
/* 11 */ "QWordData",
/* 12 */ "SimpleName",
/* 13 */ "NameOrRef"
};
const char *acpi_ut_get_argument_type_name(u32 arg_type)
{
if (arg_type > ARGP_MAX) {
return ("Unknown ARGP");
}
return (acpi_gbl_argument_type[arg_type]);
}
#endif
/*******************************************************************************
*
* FUNCTION: acpi_ut_valid_object_type
*
* PARAMETERS: type - Object type to be validated
*
* RETURN: TRUE if valid object type, FALSE otherwise
*
* DESCRIPTION: Validate an object type
*
******************************************************************************/
u8 acpi_ut_valid_object_type(acpi_object_type type)
{
if (type > ACPI_TYPE_LOCAL_MAX) {
/* Note: Assumes all TYPEs are contiguous (external/local) */
return (FALSE);
}
return (TRUE);
}
| linux-master | drivers/acpi/acpica/utdecode.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: dbmethod - Debug commands for control methods
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdispat.h"
#include "acnamesp.h"
#include "acdebug.h"
#include "acparser.h"
#include "acpredef.h"
#define _COMPONENT ACPI_CA_DEBUGGER
ACPI_MODULE_NAME("dbmethod")
/* Local prototypes */
static acpi_status
acpi_db_walk_for_execute(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value);
static acpi_status acpi_db_evaluate_object(struct acpi_namespace_node *node);
/*******************************************************************************
*
* FUNCTION: acpi_db_set_method_breakpoint
*
* PARAMETERS: location - AML offset of breakpoint
* walk_state - Current walk info
* op - Current Op (from parse walk)
*
* RETURN: None
*
* DESCRIPTION: Set a breakpoint in a control method at the specified
* AML offset
*
******************************************************************************/
void
acpi_db_set_method_breakpoint(char *location,
struct acpi_walk_state *walk_state,
union acpi_parse_object *op)
{
u32 address;
u32 aml_offset;
if (!op) {
acpi_os_printf("There is no method currently executing\n");
return;
}
/* Get and verify the breakpoint address */
address = strtoul(location, NULL, 16);
aml_offset = (u32)ACPI_PTR_DIFF(op->common.aml,
walk_state->parser_state.aml_start);
if (address <= aml_offset) {
acpi_os_printf("Breakpoint %X is beyond current address %X\n",
address, aml_offset);
}
/* Save breakpoint in current walk */
walk_state->user_breakpoint = address;
acpi_os_printf("Breakpoint set at AML offset %X\n", address);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_set_method_call_breakpoint
*
* PARAMETERS: op - Current Op (from parse walk)
*
* RETURN: None
*
* DESCRIPTION: Set a breakpoint in a control method at the specified
* AML offset
*
******************************************************************************/
void acpi_db_set_method_call_breakpoint(union acpi_parse_object *op)
{
if (!op) {
acpi_os_printf("There is no method currently executing\n");
return;
}
acpi_gbl_step_to_next_call = TRUE;
}
/*******************************************************************************
*
* FUNCTION: acpi_db_set_method_data
*
* PARAMETERS: type_arg - L for local, A for argument
* index_arg - which one
* value_arg - Value to set.
*
* RETURN: None
*
* DESCRIPTION: Set a local or argument for the running control method.
* NOTE: only object supported is Number.
*
******************************************************************************/
void acpi_db_set_method_data(char *type_arg, char *index_arg, char *value_arg)
{
char type;
u32 index;
u32 value;
struct acpi_walk_state *walk_state;
union acpi_operand_object *obj_desc;
acpi_status status;
struct acpi_namespace_node *node;
/* Validate type_arg */
acpi_ut_strupr(type_arg);
type = type_arg[0];
if ((type != 'L') && (type != 'A') && (type != 'N')) {
acpi_os_printf("Invalid SET operand: %s\n", type_arg);
return;
}
value = strtoul(value_arg, NULL, 16);
if (type == 'N') {
node = acpi_db_convert_to_node(index_arg);
if (!node) {
return;
}
if (node->type != ACPI_TYPE_INTEGER) {
acpi_os_printf("Can only set Integer nodes\n");
return;
}
obj_desc = node->object;
obj_desc->integer.value = value;
return;
}
/* Get the index and value */
index = strtoul(index_arg, NULL, 16);
walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
if (!walk_state) {
acpi_os_printf("There is no method currently executing\n");
return;
}
/* Create and initialize the new object */
obj_desc = acpi_ut_create_integer_object((u64)value);
if (!obj_desc) {
acpi_os_printf("Could not create an internal object\n");
return;
}
/* Store the new object into the target */
switch (type) {
case 'A':
/* Set a method argument */
if (index > ACPI_METHOD_MAX_ARG) {
acpi_os_printf("Arg%u - Invalid argument name\n",
index);
goto cleanup;
}
status = acpi_ds_store_object_to_local(ACPI_REFCLASS_ARG,
index, obj_desc,
walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
obj_desc = walk_state->arguments[index].object;
acpi_os_printf("Arg%u: ", index);
acpi_db_display_internal_object(obj_desc, walk_state);
break;
case 'L':
/* Set a method local */
if (index > ACPI_METHOD_MAX_LOCAL) {
acpi_os_printf
("Local%u - Invalid local variable name\n", index);
goto cleanup;
}
status = acpi_ds_store_object_to_local(ACPI_REFCLASS_LOCAL,
index, obj_desc,
walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
obj_desc = walk_state->local_variables[index].object;
acpi_os_printf("Local%u: ", index);
acpi_db_display_internal_object(obj_desc, walk_state);
break;
default:
break;
}
cleanup:
acpi_ut_remove_reference(obj_desc);
}
#ifdef ACPI_DISASSEMBLER
/*******************************************************************************
*
* FUNCTION: acpi_db_disassemble_aml
*
* PARAMETERS: statements - Number of statements to disassemble
* op - Current Op (from parse walk)
*
* RETURN: None
*
* DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number
* of statements specified.
*
******************************************************************************/
void acpi_db_disassemble_aml(char *statements, union acpi_parse_object *op)
{
u32 num_statements = 8;
if (!op) {
acpi_os_printf("There is no method currently executing\n");
return;
}
if (statements) {
num_statements = strtoul(statements, NULL, 0);
}
acpi_dm_disassemble(NULL, op, num_statements);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_disassemble_method
*
* PARAMETERS: name - Name of control method
*
* RETURN: None
*
* DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number
* of statements specified.
*
******************************************************************************/
acpi_status acpi_db_disassemble_method(char *name)
{
acpi_status status;
union acpi_parse_object *op;
struct acpi_walk_state *walk_state;
union acpi_operand_object *obj_desc;
struct acpi_namespace_node *method;
method = acpi_db_convert_to_node(name);
if (!method) {
return (AE_BAD_PARAMETER);
}
if (method->type != ACPI_TYPE_METHOD) {
ACPI_ERROR((AE_INFO, "%s (%s): Object must be a control method",
name, acpi_ut_get_type_name(method->type)));
return (AE_BAD_PARAMETER);
}
obj_desc = method->object;
op = acpi_ps_create_scope_op(obj_desc->method.aml_start);
if (!op) {
return (AE_NO_MEMORY);
}
/* Create and initialize a new walk state */
walk_state = acpi_ds_create_walk_state(0, op, NULL, NULL);
if (!walk_state) {
return (AE_NO_MEMORY);
}
status = acpi_ds_init_aml_walk(walk_state, op, NULL,
obj_desc->method.aml_start,
obj_desc->method.aml_length, NULL,
ACPI_IMODE_LOAD_PASS1);
if (ACPI_FAILURE(status)) {
return (status);
}
status = acpi_ut_allocate_owner_id(&obj_desc->method.owner_id);
if (ACPI_FAILURE(status)) {
return (status);
}
walk_state->owner_id = obj_desc->method.owner_id;
/* Push start scope on scope stack and make it current */
status = acpi_ds_scope_stack_push(method, method->type, walk_state);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Parse the entire method AML including deferred operators */
walk_state->parse_flags &= ~ACPI_PARSE_DELETE_TREE;
walk_state->parse_flags |= ACPI_PARSE_DISASSEMBLE;
status = acpi_ps_parse_aml(walk_state);
if (ACPI_FAILURE(status)) {
return (status);
}
(void)acpi_dm_parse_deferred_ops(op);
/* Now we can disassemble the method */
acpi_gbl_dm_opt_verbose = FALSE;
acpi_dm_disassemble(NULL, op, 0);
acpi_gbl_dm_opt_verbose = TRUE;
acpi_ps_delete_parse_tree(op);
/* Method cleanup */
acpi_ns_delete_namespace_subtree(method);
acpi_ns_delete_namespace_by_owner(obj_desc->method.owner_id);
acpi_ut_release_owner_id(&obj_desc->method.owner_id);
return (AE_OK);
}
#endif
/*******************************************************************************
*
* FUNCTION: acpi_db_evaluate_object
*
* PARAMETERS: node - Namespace node for the object
*
* RETURN: Status
*
* DESCRIPTION: Main execution function for the Evaluate/Execute/All debugger
* commands.
*
******************************************************************************/
static acpi_status acpi_db_evaluate_object(struct acpi_namespace_node *node)
{
char *pathname;
u32 i;
struct acpi_device_info *obj_info;
struct acpi_object_list param_objects;
union acpi_object params[ACPI_METHOD_NUM_ARGS];
struct acpi_buffer return_obj;
acpi_status status;
pathname = acpi_ns_get_external_pathname(node);
if (!pathname) {
return (AE_OK);
}
/* Get the object info for number of method parameters */
status = acpi_get_object_info(node, &obj_info);
if (ACPI_FAILURE(status)) {
ACPI_FREE(pathname);
return (status);
}
param_objects.pointer = NULL;
param_objects.count = 0;
if (obj_info->type == ACPI_TYPE_METHOD) {
/* Setup default parameters */
for (i = 0; i < obj_info->param_count; i++) {
params[i].type = ACPI_TYPE_INTEGER;
params[i].integer.value = 1;
}
param_objects.pointer = params;
param_objects.count = obj_info->param_count;
}
ACPI_FREE(obj_info);
return_obj.pointer = NULL;
return_obj.length = ACPI_ALLOCATE_BUFFER;
/* Do the actual method execution */
acpi_gbl_method_executing = TRUE;
status = acpi_evaluate_object(node, NULL, ¶m_objects, &return_obj);
acpi_gbl_method_executing = FALSE;
acpi_os_printf("%-32s returned %s\n", pathname,
acpi_format_exception(status));
if (return_obj.length) {
acpi_os_printf("Evaluation of %s returned object %p, "
"external buffer length %X\n",
pathname, return_obj.pointer,
(u32)return_obj.length);
acpi_db_dump_external_object(return_obj.pointer, 1);
acpi_os_printf("\n");
}
ACPI_FREE(pathname);
/* Ignore status from method execution */
return (AE_OK);
/* Update count, check if we have executed enough methods */
}
/*******************************************************************************
*
* FUNCTION: acpi_db_walk_for_execute
*
* PARAMETERS: Callback from walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Batch execution function. Evaluates all "predefined" objects --
* the nameseg begins with an underscore.
*
******************************************************************************/
static acpi_status
acpi_db_walk_for_execute(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value)
{
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
struct acpi_db_execute_walk *info =
(struct acpi_db_execute_walk *)context;
acpi_status status;
const union acpi_predefined_info *predefined;
predefined = acpi_ut_match_predefined_method(node->name.ascii);
if (!predefined) {
return (AE_OK);
}
if (node->type == ACPI_TYPE_LOCAL_SCOPE) {
return (AE_OK);
}
acpi_db_evaluate_object(node);
/* Ignore status from object evaluation */
status = AE_OK;
/* Update count, check if we have executed enough methods */
info->count++;
if (info->count >= info->max_count) {
status = AE_CTRL_TERMINATE;
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_walk_for_execute_all
*
* PARAMETERS: Callback from walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Batch execution function. Evaluates all objects whose path ends
* with the nameseg "Info->NameSeg". Used for the "ALL" command.
*
******************************************************************************/
static acpi_status
acpi_db_walk_for_execute_all(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value)
{
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
struct acpi_db_execute_walk *info =
(struct acpi_db_execute_walk *)context;
acpi_status status;
if (!ACPI_COMPARE_NAMESEG(node->name.ascii, info->name_seg)) {
return (AE_OK);
}
if (node->type == ACPI_TYPE_LOCAL_SCOPE) {
return (AE_OK);
}
/* Now evaluate the input object (node) */
acpi_db_evaluate_object(node);
/* Ignore status from method execution */
status = AE_OK;
/* Update count of executed methods/objects */
info->count++;
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_evaluate_predefined_names
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Namespace batch execution. Execute predefined names in the
* namespace, up to the max count, if specified.
*
******************************************************************************/
void acpi_db_evaluate_predefined_names(void)
{
struct acpi_db_execute_walk info;
info.count = 0;
info.max_count = ACPI_UINT32_MAX;
/* Search all nodes in namespace */
(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, acpi_db_walk_for_execute,
NULL, (void *)&info, NULL);
acpi_os_printf("Evaluated %u predefined names in the namespace\n",
info.count);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_evaluate_all
*
* PARAMETERS: none_acpi_gbl_db_method_info
*
* RETURN: None
*
* DESCRIPTION: Namespace batch execution. Implements the "ALL" command.
* Execute all namepaths whose final nameseg matches the
* input nameseg.
*
******************************************************************************/
void acpi_db_evaluate_all(char *name_seg)
{
struct acpi_db_execute_walk info;
info.count = 0;
info.max_count = ACPI_UINT32_MAX;
ACPI_COPY_NAMESEG(info.name_seg, name_seg);
info.name_seg[ACPI_NAMESEG_SIZE] = 0;
/* Search all nodes in namespace */
(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, acpi_db_walk_for_execute_all,
NULL, (void *)&info, NULL);
acpi_os_printf("Evaluated %u names in the namespace\n", info.count);
}
| linux-master | drivers/acpi/acpica/dbmethod.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: utpredef - support functions for predefined names
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acpredef.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utpredef")
/*
* Names for the types that can be returned by the predefined objects.
* Used for warning messages. Must be in the same order as the ACPI_RTYPEs
*/
static const char *ut_rtype_names[] = {
"/Integer",
"/String",
"/Buffer",
"/Package",
"/Reference",
};
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_next_predefined_method
*
* PARAMETERS: this_name - Entry in the predefined method/name table
*
* RETURN: Pointer to next entry in predefined table.
*
* DESCRIPTION: Get the next entry in the predefine method table. Handles the
* cases where a package info entry follows a method name that
* returns a package.
*
******************************************************************************/
const union acpi_predefined_info *acpi_ut_get_next_predefined_method(const union
acpi_predefined_info
*this_name)
{
/*
* Skip next entry in the table if this name returns a Package
* (next entry contains the package info)
*/
if ((this_name->info.expected_btypes & ACPI_RTYPE_PACKAGE) &&
(this_name->info.expected_btypes != ACPI_RTYPE_ALL)) {
this_name++;
}
this_name++;
return (this_name);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_match_predefined_method
*
* PARAMETERS: name - Name to find
*
* RETURN: Pointer to entry in predefined table. NULL indicates not found.
*
* DESCRIPTION: Check an object name against the predefined object list.
*
******************************************************************************/
const union acpi_predefined_info *acpi_ut_match_predefined_method(char *name)
{
const union acpi_predefined_info *this_name;
/* Quick check for a predefined name, first character must be underscore */
if (name[0] != '_') {
return (NULL);
}
/* Search info table for a predefined method/object name */
this_name = acpi_gbl_predefined_methods;
while (this_name->info.name[0]) {
if (ACPI_COMPARE_NAMESEG(name, this_name->info.name)) {
return (this_name);
}
this_name = acpi_ut_get_next_predefined_method(this_name);
}
return (NULL); /* Not found */
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_expected_return_types
*
* PARAMETERS: buffer - Where the formatted string is returned
* expected_Btypes - Bitfield of expected data types
*
* RETURN: Formatted string in Buffer.
*
* DESCRIPTION: Format the expected object types into a printable string.
*
******************************************************************************/
void acpi_ut_get_expected_return_types(char *buffer, u32 expected_btypes)
{
u32 this_rtype;
u32 i;
u32 j;
if (!expected_btypes) {
strcpy(buffer, "NONE");
return;
}
j = 1;
buffer[0] = 0;
this_rtype = ACPI_RTYPE_INTEGER;
for (i = 0; i < ACPI_NUM_RTYPES; i++) {
/* If one of the expected types, concatenate the name of this type */
if (expected_btypes & this_rtype) {
strcat(buffer, &ut_rtype_names[i][j]);
j = 0; /* Use name separator from now on */
}
this_rtype <<= 1; /* Next Rtype */
}
}
/*******************************************************************************
*
* The remaining functions are used by iASL and acpi_help only
*
******************************************************************************/
#if (defined ACPI_ASL_COMPILER || defined ACPI_HELP_APP)
/* Local prototypes */
static u32 acpi_ut_get_argument_types(char *buffer, u16 argument_types);
/* Types that can be returned externally by a predefined name */
static const char *ut_external_type_names[] = /* Indexed by ACPI_TYPE_* */
{
", Type_ANY",
", Integer",
", String",
", Buffer",
", Package"
};
/* Bit widths for resource descriptor predefined names */
static const char *ut_resource_type_names[] = {
"/1",
"/2",
"/3",
"/8",
"/16",
"/32",
"/64",
"/variable",
};
/*******************************************************************************
*
* FUNCTION: acpi_ut_match_resource_name
*
* PARAMETERS: name - Name to find
*
* RETURN: Pointer to entry in the resource table. NULL indicates not
* found.
*
* DESCRIPTION: Check an object name against the predefined resource
* descriptor object list.
*
******************************************************************************/
const union acpi_predefined_info *acpi_ut_match_resource_name(char *name)
{
const union acpi_predefined_info *this_name;
/*
* Quick check for a predefined name, first character must
* be underscore
*/
if (name[0] != '_') {
return (NULL);
}
/* Search info table for a predefined method/object name */
this_name = acpi_gbl_resource_names;
while (this_name->info.name[0]) {
if (ACPI_COMPARE_NAMESEG(name, this_name->info.name)) {
return (this_name);
}
this_name++;
}
return (NULL); /* Not found */
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_display_predefined_method
*
* PARAMETERS: buffer - Scratch buffer for this function
* this_name - Entry in the predefined method/name table
* multi_line - TRUE if output should be on >1 line
*
* RETURN: None
*
* DESCRIPTION: Display information about a predefined method. Number and
* type of the input arguments, and expected type(s) for the
* return value, if any.
*
******************************************************************************/
void
acpi_ut_display_predefined_method(char *buffer,
const union acpi_predefined_info *this_name,
u8 multi_line)
{
u32 arg_count;
/*
* Get the argument count and the string buffer
* containing all argument types
*/
arg_count = acpi_ut_get_argument_types(buffer,
this_name->info.argument_list);
if (multi_line) {
printf(" ");
}
printf("%4.4s Requires %s%u argument%s",
this_name->info.name,
(this_name->info.argument_list & ARG_COUNT_IS_MINIMUM) ?
"(at least) " : "", arg_count, arg_count != 1 ? "s" : "");
/* Display the types for any arguments */
if (arg_count > 0) {
printf(" (%s)", buffer);
}
if (multi_line) {
printf("\n ");
}
/* Get the return value type(s) allowed */
if (this_name->info.expected_btypes) {
acpi_ut_get_expected_return_types(buffer,
this_name->info.
expected_btypes);
printf(" Return value types: %s\n", buffer);
} else {
printf(" No return value\n");
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_argument_types
*
* PARAMETERS: buffer - Where to return the formatted types
* argument_types - Types field for this method
*
* RETURN: count - the number of arguments required for this method
*
* DESCRIPTION: Format the required data types for this method (Integer,
* String, Buffer, or Package) and return the required argument
* count.
*
******************************************************************************/
static u32 acpi_ut_get_argument_types(char *buffer, u16 argument_types)
{
u16 this_argument_type;
u16 sub_index;
u16 arg_count;
u32 i;
*buffer = 0;
sub_index = 2;
/* First field in the types list is the count of args to follow */
arg_count = METHOD_GET_ARG_COUNT(argument_types);
if (arg_count > METHOD_PREDEF_ARGS_MAX) {
printf("**** Invalid argument count (%u) "
"in predefined info structure\n", arg_count);
return (arg_count);
}
/* Get each argument from the list, convert to ascii, store to buffer */
for (i = 0; i < arg_count; i++) {
this_argument_type = METHOD_GET_NEXT_TYPE(argument_types);
if (this_argument_type > METHOD_MAX_ARG_TYPE) {
printf("**** Invalid argument type (%u) "
"in predefined info structure\n",
this_argument_type);
return (arg_count);
}
strcat(buffer,
ut_external_type_names[this_argument_type] + sub_index);
sub_index = 0;
}
return (arg_count);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_resource_bit_width
*
* PARAMETERS: buffer - Where the formatted string is returned
* types - Bitfield of expected data types
*
* RETURN: Count of return types. Formatted string in Buffer.
*
* DESCRIPTION: Format the resource bit widths into a printable string.
*
******************************************************************************/
u32 acpi_ut_get_resource_bit_width(char *buffer, u16 types)
{
u32 i;
u16 sub_index;
u32 found;
*buffer = 0;
sub_index = 1;
found = 0;
for (i = 0; i < NUM_RESOURCE_WIDTHS; i++) {
if (types & 1) {
strcat(buffer, &(ut_resource_type_names[i][sub_index]));
sub_index = 0;
found++;
}
types >>= 1;
}
return (found);
}
#endif
| linux-master | drivers/acpi/acpica/utpredef.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: nsrepair2 - Repair for objects returned by specific
* predefined methods
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsrepair2")
/*
* Information structure and handler for ACPI predefined names that can
* be repaired on a per-name basis.
*/
typedef
acpi_status (*acpi_repair_function) (struct acpi_evaluate_info * info,
union acpi_operand_object **
return_object_ptr);
typedef struct acpi_repair_info {
char name[ACPI_NAMESEG_SIZE];
acpi_repair_function repair_function;
} acpi_repair_info;
/* Local prototypes */
static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct
acpi_namespace_node
*node);
static acpi_status
acpi_ns_repair_ALR(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
acpi_ns_repair_CID(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
acpi_ns_repair_CST(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
acpi_ns_repair_FDE(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
acpi_ns_repair_HID(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
acpi_ns_repair_PRT(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
acpi_ns_repair_PSS(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
acpi_ns_repair_TSS(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
acpi_ns_check_sorted_list(struct acpi_evaluate_info *info,
union acpi_operand_object *return_object,
u32 start_index,
u32 expected_count,
u32 sort_index,
u8 sort_direction, char *sort_key_name);
/* Values for sort_direction above */
#define ACPI_SORT_ASCENDING 0
#define ACPI_SORT_DESCENDING 1
static void
acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index);
static void
acpi_ns_sort_list(union acpi_operand_object **elements,
u32 count, u32 index, u8 sort_direction);
/*
* This table contains the names of the predefined methods for which we can
* perform more complex repairs.
*
* As necessary:
*
* _ALR: Sort the list ascending by ambient_illuminance
* _CID: Strings: uppercase all, remove any leading asterisk
* _CST: Sort the list ascending by C state type
* _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs
* _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs
* _HID: Strings: uppercase all, remove any leading asterisk
* _PRT: Fix reversed source_name and source_index
* _PSS: Sort the list descending by Power
* _TSS: Sort the list descending by Power
*
* Names that must be packages, but cannot be sorted:
*
* _BCL: Values are tied to the Package index where they appear, and cannot
* be moved or sorted. These index values are used for _BQC and _BCM.
* However, we can fix the case where a buffer is returned, by converting
* it to a Package of integers.
*/
static const struct acpi_repair_info acpi_ns_repairable_names[] = {
{"_ALR", acpi_ns_repair_ALR},
{"_CID", acpi_ns_repair_CID},
{"_CST", acpi_ns_repair_CST},
{"_FDE", acpi_ns_repair_FDE},
{"_GTM", acpi_ns_repair_FDE}, /* _GTM has same repair as _FDE */
{"_HID", acpi_ns_repair_HID},
{"_PRT", acpi_ns_repair_PRT},
{"_PSS", acpi_ns_repair_PSS},
{"_TSS", acpi_ns_repair_TSS},
{{0, 0, 0, 0}, NULL} /* Table terminator */
};
#define ACPI_FDE_FIELD_COUNT 5
#define ACPI_FDE_BYTE_BUFFER_SIZE 5
#define ACPI_FDE_DWORD_BUFFER_SIZE (ACPI_FDE_FIELD_COUNT * (u32) sizeof (u32))
/******************************************************************************
*
* FUNCTION: acpi_ns_complex_repairs
*
* PARAMETERS: info - Method execution information block
* node - Namespace node for the method/object
* validate_status - Original status of earlier validation
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if repair was successful. If name is not
* matched, validate_status is returned.
*
* DESCRIPTION: Attempt to repair/convert a return object of a type that was
* not expected.
*
*****************************************************************************/
acpi_status
acpi_ns_complex_repairs(struct acpi_evaluate_info *info,
struct acpi_namespace_node *node,
acpi_status validate_status,
union acpi_operand_object **return_object_ptr)
{
const struct acpi_repair_info *predefined;
acpi_status status;
ACPI_FUNCTION_TRACE(ns_complex_repairs);
/* Check if this name is in the list of repairable names */
predefined = acpi_ns_match_complex_repair(node);
if (!predefined) {
return_ACPI_STATUS(validate_status);
}
status = predefined->repair_function(info, return_object_ptr);
return_ACPI_STATUS(status);
}
/******************************************************************************
*
* FUNCTION: acpi_ns_match_complex_repair
*
* PARAMETERS: node - Namespace node for the method/object
*
* RETURN: Pointer to entry in repair table. NULL indicates not found.
*
* DESCRIPTION: Check an object name against the repairable object list.
*
*****************************************************************************/
static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct
acpi_namespace_node
*node)
{
const struct acpi_repair_info *this_name;
/* Search info table for a repairable predefined method/object name */
this_name = acpi_ns_repairable_names;
while (this_name->repair_function) {
if (ACPI_COMPARE_NAMESEG(node->name.ascii, this_name->name)) {
return (this_name);
}
this_name++;
}
return (NULL); /* Not found */
}
/******************************************************************************
*
* FUNCTION: acpi_ns_repair_ALR
*
* PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
* DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list
* ascending by the ambient illuminance values.
*
*****************************************************************************/
static acpi_status
acpi_ns_repair_ALR(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
acpi_status status;
status = acpi_ns_check_sorted_list(info, return_object, 0, 2, 1,
ACPI_SORT_ASCENDING,
"AmbientIlluminance");
return (status);
}
/******************************************************************************
*
* FUNCTION: acpi_ns_repair_FDE
*
* PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
* DESCRIPTION: Repair for the _FDE and _GTM objects. The expected return
* value is a Buffer of 5 DWORDs. This function repairs a common
* problem where the return value is a Buffer of BYTEs, not
* DWORDs.
*
*****************************************************************************/
static acpi_status
acpi_ns_repair_FDE(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
union acpi_operand_object *buffer_object;
u8 *byte_buffer;
u32 *dword_buffer;
u32 i;
ACPI_FUNCTION_NAME(ns_repair_FDE);
switch (return_object->common.type) {
case ACPI_TYPE_BUFFER:
/* This is the expected type. Length should be (at least) 5 DWORDs */
if (return_object->buffer.length >= ACPI_FDE_DWORD_BUFFER_SIZE) {
return (AE_OK);
}
/* We can only repair if we have exactly 5 BYTEs */
if (return_object->buffer.length != ACPI_FDE_BYTE_BUFFER_SIZE) {
ACPI_WARN_PREDEFINED((AE_INFO,
info->full_pathname,
info->node_flags,
"Incorrect return buffer length %u, expected %u",
return_object->buffer.length,
ACPI_FDE_DWORD_BUFFER_SIZE));
return (AE_AML_OPERAND_TYPE);
}
/* Create the new (larger) buffer object */
buffer_object =
acpi_ut_create_buffer_object(ACPI_FDE_DWORD_BUFFER_SIZE);
if (!buffer_object) {
return (AE_NO_MEMORY);
}
/* Expand each byte to a DWORD */
byte_buffer = return_object->buffer.pointer;
dword_buffer = ACPI_CAST_PTR(u32,
buffer_object->buffer.pointer);
for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++) {
*dword_buffer = (u32) *byte_buffer;
dword_buffer++;
byte_buffer++;
}
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s Expanded Byte Buffer to expected DWord Buffer\n",
info->full_pathname));
break;
default:
return (AE_AML_OPERAND_TYPE);
}
/* Delete the original return object, return the new buffer object */
acpi_ut_remove_reference(return_object);
*return_object_ptr = buffer_object;
info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_ns_repair_CID
*
* PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
* DESCRIPTION: Repair for the _CID object. If a string, ensure that all
* letters are uppercase and that there is no leading asterisk.
* If a Package, ensure same for all string elements.
*
*****************************************************************************/
static acpi_status
acpi_ns_repair_CID(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
acpi_status status;
union acpi_operand_object *return_object = *return_object_ptr;
union acpi_operand_object **element_ptr;
union acpi_operand_object *original_element;
u16 original_ref_count;
u32 i;
ACPI_FUNCTION_TRACE(ns_repair_CID);
/* Check for _CID as a simple string */
if (return_object->common.type == ACPI_TYPE_STRING) {
status = acpi_ns_repair_HID(info, return_object_ptr);
return_ACPI_STATUS(status);
}
/* Exit if not a Package */
if (return_object->common.type != ACPI_TYPE_PACKAGE) {
return_ACPI_STATUS(AE_OK);
}
/* Examine each element of the _CID package */
element_ptr = return_object->package.elements;
for (i = 0; i < return_object->package.count; i++) {
original_element = *element_ptr;
original_ref_count = original_element->common.reference_count;
status = acpi_ns_repair_HID(info, element_ptr);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (original_element != *element_ptr) {
/* Update reference count of new object */
(*element_ptr)->common.reference_count =
original_ref_count;
}
element_ptr++;
}
return_ACPI_STATUS(AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_ns_repair_CST
*
* PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
* DESCRIPTION: Repair for the _CST object:
* 1. Sort the list ascending by C state type
* 2. Ensure type cannot be zero
* 3. A subpackage count of zero means _CST is meaningless
* 4. Count must match the number of C state subpackages
*
*****************************************************************************/
static acpi_status
acpi_ns_repair_CST(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
union acpi_operand_object **outer_elements;
u32 outer_element_count;
union acpi_operand_object *obj_desc;
acpi_status status;
u8 removing;
u32 i;
ACPI_FUNCTION_NAME(ns_repair_CST);
/*
* Check if the C-state type values are proportional.
*/
outer_element_count = return_object->package.count - 1;
i = 0;
while (i < outer_element_count) {
outer_elements = &return_object->package.elements[i + 1];
removing = FALSE;
if ((*outer_elements)->package.count == 0) {
ACPI_WARN_PREDEFINED((AE_INFO,
info->full_pathname,
info->node_flags,
"SubPackage[%u] - removing entry due to zero count",
i));
removing = TRUE;
goto remove_element;
}
obj_desc = (*outer_elements)->package.elements[1]; /* Index1 = Type */
if ((u32)obj_desc->integer.value == 0) {
ACPI_WARN_PREDEFINED((AE_INFO,
info->full_pathname,
info->node_flags,
"SubPackage[%u] - removing entry due to invalid Type(0)",
i));
removing = TRUE;
}
remove_element:
if (removing) {
acpi_ns_remove_element(return_object, i + 1);
outer_element_count--;
} else {
i++;
}
}
/* Update top-level package count, Type "Integer" checked elsewhere */
obj_desc = return_object->package.elements[0];
obj_desc->integer.value = outer_element_count;
/*
* Entries (subpackages) in the _CST Package must be sorted by the
* C-state type, in ascending order.
*/
status = acpi_ns_check_sorted_list(info, return_object, 1, 4, 1,
ACPI_SORT_ASCENDING, "C-State Type");
if (ACPI_FAILURE(status)) {
return (status);
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_ns_repair_HID
*
* PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
* DESCRIPTION: Repair for the _HID object. If a string, ensure that all
* letters are uppercase and that there is no leading asterisk.
*
*****************************************************************************/
static acpi_status
acpi_ns_repair_HID(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
union acpi_operand_object *new_string;
char *source;
char *dest;
ACPI_FUNCTION_TRACE(ns_repair_HID);
/* We only care about string _HID objects (not integers) */
if (return_object->common.type != ACPI_TYPE_STRING) {
return_ACPI_STATUS(AE_OK);
}
if (return_object->string.length == 0) {
ACPI_WARN_PREDEFINED((AE_INFO,
info->full_pathname, info->node_flags,
"Invalid zero-length _HID or _CID string"));
/* Return AE_OK anyway, let driver handle it */
info->return_flags |= ACPI_OBJECT_REPAIRED;
return_ACPI_STATUS(AE_OK);
}
/* It is simplest to always create a new string object */
new_string = acpi_ut_create_string_object(return_object->string.length);
if (!new_string) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/*
* Remove a leading asterisk if present. For some unknown reason, there
* are many machines in the field that contains IDs like this.
*
* Examples: "*PNP0C03", "*ACPI0003"
*/
source = return_object->string.pointer;
if (*source == '*') {
source++;
new_string->string.length--;
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Removed invalid leading asterisk\n",
info->full_pathname));
}
/*
* Copy and uppercase the string. From the ACPI 5.0 specification:
*
* A valid PNP ID must be of the form "AAA####" where A is an uppercase
* letter and # is a hex digit. A valid ACPI ID must be of the form
* "NNNN####" where N is an uppercase letter or decimal digit, and
* # is a hex digit.
*/
for (dest = new_string->string.pointer; *source; dest++, source++) {
*dest = (char)toupper((int)*source);
}
acpi_ut_remove_reference(return_object);
*return_object_ptr = new_string;
return_ACPI_STATUS(AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_ns_repair_PRT
*
* PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
* DESCRIPTION: Repair for the _PRT object. If necessary, fix reversed
* source_name and source_index field, a common BIOS bug.
*
*****************************************************************************/
static acpi_status
acpi_ns_repair_PRT(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *package_object = *return_object_ptr;
union acpi_operand_object **top_object_list;
union acpi_operand_object **sub_object_list;
union acpi_operand_object *obj_desc;
union acpi_operand_object *sub_package;
u32 element_count;
u32 index;
/* Each element in the _PRT package is a subpackage */
top_object_list = package_object->package.elements;
element_count = package_object->package.count;
/* Examine each subpackage */
for (index = 0; index < element_count; index++, top_object_list++) {
sub_package = *top_object_list;
sub_object_list = sub_package->package.elements;
/* Check for minimum required element count */
if (sub_package->package.count < 4) {
continue;
}
/*
* If the BIOS has erroneously reversed the _PRT source_name (index 2)
* and the source_index (index 3), fix it. _PRT is important enough to
* workaround this BIOS error. This also provides compatibility with
* other ACPI implementations.
*/
obj_desc = sub_object_list[3];
if (!obj_desc || (obj_desc->common.type != ACPI_TYPE_INTEGER)) {
sub_object_list[3] = sub_object_list[2];
sub_object_list[2] = obj_desc;
info->return_flags |= ACPI_OBJECT_REPAIRED;
ACPI_WARN_PREDEFINED((AE_INFO,
info->full_pathname,
info->node_flags,
"PRT[%X]: Fixed reversed SourceName and SourceIndex",
index));
}
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_ns_repair_PSS
*
* PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
* DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list
* by the CPU frequencies. Check that the power dissipation values
* are all proportional to CPU frequency (i.e., sorting by
* frequency should be the same as sorting by power.)
*
*****************************************************************************/
static acpi_status
acpi_ns_repair_PSS(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
union acpi_operand_object **outer_elements;
u32 outer_element_count;
union acpi_operand_object **elements;
union acpi_operand_object *obj_desc;
u32 previous_value;
acpi_status status;
u32 i;
/*
* Entries (subpackages) in the _PSS Package must be sorted by power
* dissipation, in descending order. If it appears that the list is
* incorrectly sorted, sort it. We sort by cpu_frequency, since this
* should be proportional to the power.
*/
status = acpi_ns_check_sorted_list(info, return_object, 0, 6, 0,
ACPI_SORT_DESCENDING,
"CpuFrequency");
if (ACPI_FAILURE(status)) {
return (status);
}
/*
* We now know the list is correctly sorted by CPU frequency. Check if
* the power dissipation values are proportional.
*/
previous_value = ACPI_UINT32_MAX;
outer_elements = return_object->package.elements;
outer_element_count = return_object->package.count;
for (i = 0; i < outer_element_count; i++) {
elements = (*outer_elements)->package.elements;
obj_desc = elements[1]; /* Index1 = power_dissipation */
if ((u32)obj_desc->integer.value > previous_value) {
ACPI_WARN_PREDEFINED((AE_INFO,
info->full_pathname,
info->node_flags,
"SubPackage[%u,%u] - suspicious power dissipation values",
i - 1, i));
}
previous_value = (u32) obj_desc->integer.value;
outer_elements++;
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_ns_repair_TSS
*
* PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
* DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list
* descending by the power dissipation values.
*
*****************************************************************************/
static acpi_status
acpi_ns_repair_TSS(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
acpi_status status;
struct acpi_namespace_node *node;
/*
* We can only sort the _TSS return package if there is no _PSS in the
* same scope. This is because if _PSS is present, the ACPI specification
* dictates that the _TSS Power Dissipation field is to be ignored, and
* therefore some BIOSs leave garbage values in the _TSS Power field(s).
* In this case, it is best to just return the _TSS package as-is.
* (May, 2011)
*/
status = acpi_ns_get_node(info->node, "^_PSS",
ACPI_NS_NO_UPSEARCH, &node);
if (ACPI_SUCCESS(status)) {
return (AE_OK);
}
status = acpi_ns_check_sorted_list(info, return_object, 0, 5, 1,
ACPI_SORT_DESCENDING,
"PowerDissipation");
return (status);
}
/******************************************************************************
*
* FUNCTION: acpi_ns_check_sorted_list
*
* PARAMETERS: info - Method execution information block
* return_object - Pointer to the top-level returned object
* start_index - Index of the first subpackage
* expected_count - Minimum length of each subpackage
* sort_index - Subpackage entry to sort on
* sort_direction - Ascending or descending
* sort_key_name - Name of the sort_index field
*
* RETURN: Status. AE_OK if the list is valid and is sorted correctly or
* has been repaired by sorting the list.
*
* DESCRIPTION: Check if the package list is valid and sorted correctly by the
* sort_index. If not, then sort the list.
*
*****************************************************************************/
static acpi_status
acpi_ns_check_sorted_list(struct acpi_evaluate_info *info,
union acpi_operand_object *return_object,
u32 start_index,
u32 expected_count,
u32 sort_index,
u8 sort_direction, char *sort_key_name)
{
u32 outer_element_count;
union acpi_operand_object **outer_elements;
union acpi_operand_object **elements;
union acpi_operand_object *obj_desc;
u32 i;
u32 previous_value;
ACPI_FUNCTION_NAME(ns_check_sorted_list);
/* The top-level object must be a package */
if (return_object->common.type != ACPI_TYPE_PACKAGE) {
return (AE_AML_OPERAND_TYPE);
}
/*
* NOTE: assumes list of subpackages contains no NULL elements.
* Any NULL elements should have been removed by earlier call
* to acpi_ns_remove_null_elements.
*/
outer_element_count = return_object->package.count;
if (!outer_element_count || start_index >= outer_element_count) {
return (AE_AML_PACKAGE_LIMIT);
}
outer_elements = &return_object->package.elements[start_index];
outer_element_count -= start_index;
previous_value = 0;
if (sort_direction == ACPI_SORT_DESCENDING) {
previous_value = ACPI_UINT32_MAX;
}
/* Examine each subpackage */
for (i = 0; i < outer_element_count; i++) {
/* Each element of the top-level package must also be a package */
if ((*outer_elements)->common.type != ACPI_TYPE_PACKAGE) {
return (AE_AML_OPERAND_TYPE);
}
/* Each subpackage must have the minimum length */
if ((*outer_elements)->package.count < expected_count) {
return (AE_AML_PACKAGE_LIMIT);
}
elements = (*outer_elements)->package.elements;
obj_desc = elements[sort_index];
if (obj_desc->common.type != ACPI_TYPE_INTEGER) {
return (AE_AML_OPERAND_TYPE);
}
/*
* The list must be sorted in the specified order. If we detect a
* discrepancy, sort the entire list.
*/
if (((sort_direction == ACPI_SORT_ASCENDING) &&
(obj_desc->integer.value < previous_value)) ||
((sort_direction == ACPI_SORT_DESCENDING) &&
(obj_desc->integer.value > previous_value))) {
acpi_ns_sort_list(&return_object->package.
elements[start_index],
outer_element_count, sort_index,
sort_direction);
info->return_flags |= ACPI_OBJECT_REPAIRED;
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Repaired unsorted list - now sorted by %s\n",
info->full_pathname, sort_key_name));
return (AE_OK);
}
previous_value = (u32) obj_desc->integer.value;
outer_elements++;
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_ns_sort_list
*
* PARAMETERS: elements - Package object element list
* count - Element count for above
* index - Sort by which package element
* sort_direction - Ascending or Descending sort
*
* RETURN: None
*
* DESCRIPTION: Sort the objects that are in a package element list.
*
* NOTE: Assumes that all NULL elements have been removed from the package,
* and that all elements have been verified to be of type Integer.
*
*****************************************************************************/
static void
acpi_ns_sort_list(union acpi_operand_object **elements,
u32 count, u32 index, u8 sort_direction)
{
union acpi_operand_object *obj_desc1;
union acpi_operand_object *obj_desc2;
union acpi_operand_object *temp_obj;
u32 i;
u32 j;
/* Simple bubble sort */
for (i = 1; i < count; i++) {
for (j = (count - 1); j >= i; j--) {
obj_desc1 = elements[j - 1]->package.elements[index];
obj_desc2 = elements[j]->package.elements[index];
if (((sort_direction == ACPI_SORT_ASCENDING) &&
(obj_desc1->integer.value >
obj_desc2->integer.value))
|| ((sort_direction == ACPI_SORT_DESCENDING)
&& (obj_desc1->integer.value <
obj_desc2->integer.value))) {
temp_obj = elements[j - 1];
elements[j - 1] = elements[j];
elements[j] = temp_obj;
}
}
}
}
/******************************************************************************
*
* FUNCTION: acpi_ns_remove_element
*
* PARAMETERS: obj_desc - Package object element list
* index - Index of element to remove
*
* RETURN: None
*
* DESCRIPTION: Remove the requested element of a package and delete it.
*
*****************************************************************************/
static void
acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index)
{
union acpi_operand_object **source;
union acpi_operand_object **dest;
u32 count;
u32 new_count;
u32 i;
ACPI_FUNCTION_NAME(ns_remove_element);
count = obj_desc->package.count;
new_count = count - 1;
source = obj_desc->package.elements;
dest = source;
/* Examine all elements of the package object, remove matched index */
for (i = 0; i < count; i++) {
if (i == index) {
acpi_ut_remove_reference(*source); /* Remove one ref for being in pkg */
acpi_ut_remove_reference(*source);
} else {
*dest = *source;
dest++;
}
source++;
}
/* NULL terminate list and update the package count */
*dest = NULL;
obj_desc->package.count = new_count;
}
| linux-master | drivers/acpi/acpica/nsrepair2.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: psloop - Main AML parse loop
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
/*
* Parse the AML and build an operation tree as most interpreters, (such as
* Perl) do. Parsing is done by hand rather than with a YACC generated parser
* to tightly constrain stack and dynamic memory usage. Parsing is kept
* flexible and the code fairly compact by parsing based on a list of AML
* opcode templates in aml_op_info[].
*/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"
#include "acparser.h"
#include "acdispat.h"
#include "amlcode.h"
#include "acconvert.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_PARSER
ACPI_MODULE_NAME("psloop")
/* Local prototypes */
static acpi_status
acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
u8 * aml_op_start, union acpi_parse_object *op);
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_arguments
*
* PARAMETERS: walk_state - Current state
* aml_op_start - Op start in AML
* op - Current Op
*
* RETURN: Status
*
* DESCRIPTION: Get arguments for passed Op.
*
******************************************************************************/
static acpi_status
acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
u8 * aml_op_start, union acpi_parse_object *op)
{
acpi_status status = AE_OK;
union acpi_parse_object *arg = NULL;
ACPI_FUNCTION_TRACE_PTR(ps_get_arguments, walk_state);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Get arguments for opcode [%s]\n",
op->common.aml_op_name));
switch (op->common.aml_opcode) {
case AML_BYTE_OP: /* AML_BYTEDATA_ARG */
case AML_WORD_OP: /* AML_WORDDATA_ARG */
case AML_DWORD_OP: /* AML_DWORDATA_ARG */
case AML_QWORD_OP: /* AML_QWORDATA_ARG */
case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */
/* Fill in constant or string argument directly */
acpi_ps_get_next_simple_arg(&(walk_state->parser_state),
GET_CURRENT_ARG_TYPE(walk_state->
arg_types),
op);
break;
case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */
status = acpi_ps_get_next_namepath(walk_state,
&(walk_state->parser_state),
op,
ACPI_POSSIBLE_METHOD_CALL);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
walk_state->arg_types = 0;
break;
default:
/*
* Op is not a constant or string, append each argument to the Op
*/
while (GET_CURRENT_ARG_TYPE(walk_state->arg_types) &&
!walk_state->arg_count) {
walk_state->aml = walk_state->parser_state.aml;
switch (op->common.aml_opcode) {
case AML_METHOD_OP:
case AML_BUFFER_OP:
case AML_PACKAGE_OP:
case AML_VARIABLE_PACKAGE_OP:
case AML_WHILE_OP:
break;
default:
ASL_CV_CAPTURE_COMMENTS(walk_state);
break;
}
status =
acpi_ps_get_next_arg(walk_state,
&(walk_state->parser_state),
GET_CURRENT_ARG_TYPE
(walk_state->arg_types), &arg);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (arg) {
acpi_ps_append_arg(op, arg);
}
INCREMENT_ARG_LIST(walk_state->arg_types);
}
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Final argument count: %8.8X pass %u\n",
walk_state->arg_count,
walk_state->pass_number));
/* Special processing for certain opcodes */
switch (op->common.aml_opcode) {
case AML_METHOD_OP:
/*
* Skip parsing of control method because we don't have enough
* info in the first pass to parse it correctly.
*
* Save the length and address of the body
*/
op->named.data = walk_state->parser_state.aml;
op->named.length = (u32)
(walk_state->parser_state.pkg_end -
walk_state->parser_state.aml);
/* Skip body of method */
walk_state->parser_state.aml =
walk_state->parser_state.pkg_end;
walk_state->arg_count = 0;
break;
case AML_BUFFER_OP:
case AML_PACKAGE_OP:
case AML_VARIABLE_PACKAGE_OP:
if ((op->common.parent) &&
(op->common.parent->common.aml_opcode ==
AML_NAME_OP)
&& (walk_state->pass_number <=
ACPI_IMODE_LOAD_PASS2)) {
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Setup Package/Buffer: Pass %u, AML Ptr: %p\n",
walk_state->pass_number,
aml_op_start));
/*
* Skip parsing of Buffers and Packages because we don't have
* enough info in the first pass to parse them correctly.
*/
op->named.data = aml_op_start;
op->named.length = (u32)
(walk_state->parser_state.pkg_end -
aml_op_start);
/* Skip body */
walk_state->parser_state.aml =
walk_state->parser_state.pkg_end;
walk_state->arg_count = 0;
}
break;
case AML_WHILE_OP:
if (walk_state->control_state) {
walk_state->control_state->control.package_end =
walk_state->parser_state.pkg_end;
}
break;
default:
/* No action for all other opcodes */
break;
}
break;
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_parse_loop
*
* PARAMETERS: walk_state - Current state
*
* RETURN: Status
*
* DESCRIPTION: Parse AML (pointed to by the current parser state) and return
* a tree of ops.
*
******************************************************************************/
acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
union acpi_parse_object *op = NULL; /* current op */
struct acpi_parse_state *parser_state;
u8 *aml_op_start = NULL;
u8 opcode_length;
ACPI_FUNCTION_TRACE_PTR(ps_parse_loop, walk_state);
if (walk_state->descending_callback == NULL) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
parser_state = &walk_state->parser_state;
walk_state->arg_types = 0;
#ifndef ACPI_CONSTANT_EVAL_ONLY
if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) {
/* We are restarting a preempted control method */
if (acpi_ps_has_completed_scope(parser_state)) {
/*
* We must check if a predicate to an IF or WHILE statement
* was just completed
*/
if ((parser_state->scope->parse_scope.op) &&
((parser_state->scope->parse_scope.op->common.
aml_opcode == AML_IF_OP)
|| (parser_state->scope->parse_scope.op->common.
aml_opcode == AML_WHILE_OP))
&& (walk_state->control_state)
&& (walk_state->control_state->common.state ==
ACPI_CONTROL_PREDICATE_EXECUTING)) {
/*
* A predicate was just completed, get the value of the
* predicate and branch based on that value
*/
walk_state->op = NULL;
status =
acpi_ds_get_predicate_value(walk_state,
ACPI_TO_POINTER
(TRUE));
if (ACPI_FAILURE(status)
&& !ACPI_CNTL_EXCEPTION(status)) {
if (status == AE_AML_NO_RETURN_VALUE) {
ACPI_EXCEPTION((AE_INFO, status,
"Invoked method did not return a value"));
}
ACPI_EXCEPTION((AE_INFO, status,
"GetPredicate Failed"));
return_ACPI_STATUS(status);
}
status =
acpi_ps_next_parse_state(walk_state, op,
status);
}
acpi_ps_pop_scope(parser_state, &op,
&walk_state->arg_types,
&walk_state->arg_count);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Popped scope, Op=%p\n", op));
} else if (walk_state->prev_op) {
/* We were in the middle of an op */
op = walk_state->prev_op;
walk_state->arg_types = walk_state->prev_arg_types;
}
}
#endif
/* Iterative parsing loop, while there is more AML to process: */
while ((parser_state->aml < parser_state->aml_end) || (op)) {
ASL_CV_CAPTURE_COMMENTS(walk_state);
aml_op_start = parser_state->aml;
if (!op) {
status =
acpi_ps_create_op(walk_state, aml_op_start, &op);
if (ACPI_FAILURE(status)) {
/*
* ACPI_PARSE_MODULE_LEVEL means that we are loading a table by
* executing it as a control method. However, if we encounter
* an error while loading the table, we need to keep trying to
* load the table rather than aborting the table load. Set the
* status to AE_OK to proceed with the table load.
*/
if ((walk_state->
parse_flags & ACPI_PARSE_MODULE_LEVEL)
&& ((status == AE_ALREADY_EXISTS)
|| (status == AE_NOT_FOUND))) {
status = AE_OK;
}
if (status == AE_CTRL_PARSE_CONTINUE) {
continue;
}
if (status == AE_CTRL_PARSE_PENDING) {
status = AE_OK;
}
if (status == AE_CTRL_TERMINATE) {
return_ACPI_STATUS(status);
}
status =
acpi_ps_complete_op(walk_state, &op,
status);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (acpi_ns_opens_scope
(acpi_ps_get_opcode_info
(walk_state->opcode)->object_type)) {
/*
* If the scope/device op fails to parse, skip the body of
* the scope op because the parse failure indicates that
* the device may not exist.
*/
ACPI_INFO(("Skipping parse of AML opcode: %s (0x%4.4X)", acpi_ps_get_opcode_name(walk_state->opcode), walk_state->opcode));
/*
* Determine the opcode length before skipping the opcode.
* An opcode can be 1 byte or 2 bytes in length.
*/
opcode_length = 1;
if ((walk_state->opcode & 0xFF00) ==
AML_EXTENDED_OPCODE) {
opcode_length = 2;
}
walk_state->parser_state.aml =
walk_state->aml + opcode_length;
walk_state->parser_state.aml =
acpi_ps_get_next_package_end
(&walk_state->parser_state);
walk_state->aml =
walk_state->parser_state.aml;
}
continue;
}
acpi_ex_start_trace_opcode(op, walk_state);
}
/*
* Start arg_count at zero because we don't know if there are
* any args yet
*/
walk_state->arg_count = 0;
switch (op->common.aml_opcode) {
case AML_BYTE_OP:
case AML_WORD_OP:
case AML_DWORD_OP:
case AML_QWORD_OP:
break;
default:
ASL_CV_CAPTURE_COMMENTS(walk_state);
break;
}
/* Are there any arguments that must be processed? */
if (walk_state->arg_types) {
/* Get arguments */
status =
acpi_ps_get_arguments(walk_state, aml_op_start, op);
if (ACPI_FAILURE(status)) {
status =
acpi_ps_complete_op(walk_state, &op,
status);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if ((walk_state->control_state) &&
((walk_state->control_state->control.
opcode == AML_IF_OP)
|| (walk_state->control_state->control.
opcode == AML_WHILE_OP))) {
/*
* If the if/while op fails to parse, we will skip parsing
* the body of the op.
*/
parser_state->aml =
walk_state->control_state->control.
aml_predicate_start + 1;
parser_state->aml =
acpi_ps_get_next_package_end
(parser_state);
walk_state->aml = parser_state->aml;
ACPI_ERROR((AE_INFO,
"Skipping While/If block"));
if (*walk_state->aml == AML_ELSE_OP) {
ACPI_ERROR((AE_INFO,
"Skipping Else block"));
walk_state->parser_state.aml =
walk_state->aml + 1;
walk_state->parser_state.aml =
acpi_ps_get_next_package_end
(parser_state);
walk_state->aml =
parser_state->aml;
}
ACPI_FREE(acpi_ut_pop_generic_state
(&walk_state->control_state));
}
op = NULL;
continue;
}
}
/* Check for arguments that need to be processed */
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Parseloop: argument count: %8.8X\n",
walk_state->arg_count));
if (walk_state->arg_count) {
/*
* There are arguments (complex ones), push Op and
* prepare for argument
*/
status = acpi_ps_push_scope(parser_state, op,
walk_state->arg_types,
walk_state->arg_count);
if (ACPI_FAILURE(status)) {
status =
acpi_ps_complete_op(walk_state, &op,
status);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
continue;
}
op = NULL;
continue;
}
/*
* All arguments have been processed -- Op is complete,
* prepare for next
*/
walk_state->op_info =
acpi_ps_get_opcode_info(op->common.aml_opcode);
if (walk_state->op_info->flags & AML_NAMED) {
if (op->common.aml_opcode == AML_REGION_OP ||
op->common.aml_opcode == AML_DATA_REGION_OP) {
/*
* Skip parsing of control method or opregion body,
* because we don't have enough info in the first pass
* to parse them correctly.
*
* Completed parsing an op_region declaration, we now
* know the length.
*/
op->named.length =
(u32) (parser_state->aml - op->named.data);
}
}
if (walk_state->op_info->flags & AML_CREATE) {
/*
* Backup to beginning of create_XXXfield declaration (1 for
* Opcode)
*
* body_length is unknown until we parse the body
*/
op->named.length =
(u32) (parser_state->aml - op->named.data);
}
if (op->common.aml_opcode == AML_BANK_FIELD_OP) {
/*
* Backup to beginning of bank_field declaration
*
* body_length is unknown until we parse the body
*/
op->named.length =
(u32) (parser_state->aml - op->named.data);
}
/* This op complete, notify the dispatcher */
if (walk_state->ascending_callback != NULL) {
walk_state->op = op;
walk_state->opcode = op->common.aml_opcode;
status = walk_state->ascending_callback(walk_state);
status =
acpi_ps_next_parse_state(walk_state, op, status);
if (status == AE_CTRL_PENDING) {
status = AE_OK;
} else
if ((walk_state->
parse_flags & ACPI_PARSE_MODULE_LEVEL)
&& (ACPI_AML_EXCEPTION(status)
|| status == AE_ALREADY_EXISTS
|| status == AE_NOT_FOUND)) {
/*
* ACPI_PARSE_MODULE_LEVEL flag means that we
* are currently loading a table by executing
* it as a control method. However, if we
* encounter an error while loading the table,
* we need to keep trying to load the table
* rather than aborting the table load (setting
* the status to AE_OK continues the table
* load). If we get a failure at this point, it
* means that the dispatcher got an error while
* trying to execute the Op.
*/
status = AE_OK;
}
}
status = acpi_ps_complete_op(walk_state, &op, status);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
} /* while parser_state->Aml */
status = acpi_ps_complete_final_op(walk_state, op, status);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/psloop.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: excreate - Named object creation
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"
#include "amlcode.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("excreate")
/*******************************************************************************
*
* FUNCTION: acpi_ex_create_alias
*
* PARAMETERS: walk_state - Current state, contains operands
*
* RETURN: Status
*
* DESCRIPTION: Create a new named alias
*
******************************************************************************/
acpi_status acpi_ex_create_alias(struct acpi_walk_state *walk_state)
{
struct acpi_namespace_node *target_node;
struct acpi_namespace_node *alias_node;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(ex_create_alias);
/* Get the source/alias operands (both namespace nodes) */
alias_node = (struct acpi_namespace_node *)walk_state->operands[0];
target_node = (struct acpi_namespace_node *)walk_state->operands[1];
if ((target_node->type == ACPI_TYPE_LOCAL_ALIAS) ||
(target_node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) {
/*
* Dereference an existing alias so that we don't create a chain
* of aliases. With this code, we guarantee that an alias is
* always exactly one level of indirection away from the
* actual aliased name.
*/
target_node =
ACPI_CAST_PTR(struct acpi_namespace_node,
target_node->object);
}
/* Ensure that the target node is valid */
if (!target_node) {
return_ACPI_STATUS(AE_NULL_OBJECT);
}
/* Construct the alias object (a namespace node) */
switch (target_node->type) {
case ACPI_TYPE_METHOD:
/*
* Control method aliases need to be differentiated with
* a special type
*/
alias_node->type = ACPI_TYPE_LOCAL_METHOD_ALIAS;
break;
default:
/*
* All other object types.
*
* The new alias has the type ALIAS and points to the original
* NS node, not the object itself.
*/
alias_node->type = ACPI_TYPE_LOCAL_ALIAS;
alias_node->object =
ACPI_CAST_PTR(union acpi_operand_object, target_node);
break;
}
/* Since both operands are Nodes, we don't need to delete them */
alias_node->object =
ACPI_CAST_PTR(union acpi_operand_object, target_node);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_create_event
*
* PARAMETERS: walk_state - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new event object
*
******************************************************************************/
acpi_status acpi_ex_create_event(struct acpi_walk_state *walk_state)
{
acpi_status status;
union acpi_operand_object *obj_desc;
ACPI_FUNCTION_TRACE(ex_create_event);
obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_EVENT);
if (!obj_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/*
* Create the actual OS semaphore, with zero initial units -- meaning
* that the event is created in an unsignalled state
*/
status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0,
&obj_desc->event.os_semaphore);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
/* Attach object to the Node */
status = acpi_ns_attach_object((struct acpi_namespace_node *)
walk_state->operands[0], obj_desc,
ACPI_TYPE_EVENT);
cleanup:
/*
* Remove local reference to the object (on error, will cause deletion
* of both object and semaphore if present.)
*/
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_create_mutex
*
* PARAMETERS: walk_state - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new mutex object
*
* Mutex (Name[0], sync_level[1])
*
******************************************************************************/
acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
union acpi_operand_object *obj_desc;
ACPI_FUNCTION_TRACE_PTR(ex_create_mutex, ACPI_WALK_OPERANDS);
/* Create the new mutex object */
obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX);
if (!obj_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Create the actual OS Mutex */
status = acpi_os_create_mutex(&obj_desc->mutex.os_mutex);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
/* Init object and attach to NS node */
obj_desc->mutex.sync_level = (u8)walk_state->operands[1]->integer.value;
obj_desc->mutex.node =
(struct acpi_namespace_node *)walk_state->operands[0];
status =
acpi_ns_attach_object(obj_desc->mutex.node, obj_desc,
ACPI_TYPE_MUTEX);
cleanup:
/*
* Remove local reference to the object (on error, will cause deletion
* of both object and semaphore if present.)
*/
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_create_region
*
* PARAMETERS: aml_start - Pointer to the region declaration AML
* aml_length - Max length of the declaration AML
* space_id - Address space ID for the region
* walk_state - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new operation region object
*
******************************************************************************/
acpi_status
acpi_ex_create_region(u8 * aml_start,
u32 aml_length,
u8 space_id, struct acpi_walk_state *walk_state)
{
acpi_status status;
union acpi_operand_object *obj_desc;
struct acpi_namespace_node *node;
union acpi_operand_object *region_obj2;
ACPI_FUNCTION_TRACE(ex_create_region);
/* Get the Namespace Node */
node = walk_state->op->common.node;
/*
* If the region object is already attached to this node,
* just return
*/
if (acpi_ns_get_attached_object(node)) {
return_ACPI_STATUS(AE_OK);
}
/*
* Space ID must be one of the predefined IDs, or in the user-defined
* range
*/
if (!acpi_is_valid_space_id(space_id)) {
/*
* Print an error message, but continue. We don't want to abort
* a table load for this exception. Instead, if the region is
* actually used at runtime, abort the executing method.
*/
ACPI_ERROR((AE_INFO,
"Invalid/unknown Address Space ID: 0x%2.2X",
space_id));
}
ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n",
acpi_ut_get_region_name(space_id), space_id));
/* Create the region descriptor */
obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION);
if (!obj_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/*
* Remember location in AML stream of address & length
* operands since they need to be evaluated at run time.
*/
region_obj2 = acpi_ns_get_secondary_object(obj_desc);
region_obj2->extra.aml_start = aml_start;
region_obj2->extra.aml_length = aml_length;
region_obj2->extra.method_REG = NULL;
if (walk_state->scope_info) {
region_obj2->extra.scope_node =
walk_state->scope_info->scope.node;
} else {
region_obj2->extra.scope_node = node;
}
/* Init the region from the operands */
obj_desc->region.space_id = space_id;
obj_desc->region.address = 0;
obj_desc->region.length = 0;
obj_desc->region.pointer = NULL;
obj_desc->region.node = node;
obj_desc->region.handler = NULL;
obj_desc->common.flags &=
~(AOPOBJ_SETUP_COMPLETE | AOPOBJ_REG_CONNECTED |
AOPOBJ_OBJECT_INITIALIZED);
/* Install the new region object in the parent Node */
status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION);
cleanup:
/* Remove local reference to the object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_create_processor
*
* PARAMETERS: walk_state - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new processor object and populate the fields
*
* Processor (Name[0], cpu_ID[1], pblock_addr[2], pblock_length[3])
*
******************************************************************************/
acpi_status acpi_ex_create_processor(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ex_create_processor, walk_state);
/* Create the processor object */
obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PROCESSOR);
if (!obj_desc) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Initialize the processor object from the operands */
obj_desc->processor.proc_id = (u8) operand[1]->integer.value;
obj_desc->processor.length = (u8) operand[3]->integer.value;
obj_desc->processor.address =
(acpi_io_address)operand[2]->integer.value;
/* Install the processor object in the parent Node */
status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
obj_desc, ACPI_TYPE_PROCESSOR);
/* Remove local reference to the object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_create_power_resource
*
* PARAMETERS: walk_state - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new power_resource object and populate the fields
*
* power_resource (Name[0], system_level[1], resource_order[2])
*
******************************************************************************/
acpi_status acpi_ex_create_power_resource(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
acpi_status status;
union acpi_operand_object *obj_desc;
ACPI_FUNCTION_TRACE_PTR(ex_create_power_resource, walk_state);
/* Create the power resource object */
obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_POWER);
if (!obj_desc) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Initialize the power object from the operands */
obj_desc->power_resource.system_level = (u8) operand[1]->integer.value;
obj_desc->power_resource.resource_order =
(u16) operand[2]->integer.value;
/* Install the power resource object in the parent Node */
status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
obj_desc, ACPI_TYPE_POWER);
/* Remove local reference to the object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_create_method
*
* PARAMETERS: aml_start - First byte of the method's AML
* aml_length - AML byte count for this method
* walk_state - Current state
*
* RETURN: Status
*
* DESCRIPTION: Create a new method object
*
******************************************************************************/
acpi_status
acpi_ex_create_method(u8 * aml_start,
u32 aml_length, struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *obj_desc;
acpi_status status;
u8 method_flags;
ACPI_FUNCTION_TRACE_PTR(ex_create_method, walk_state);
/* Create a new method object */
obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
if (!obj_desc) {
status = AE_NO_MEMORY;
goto exit;
}
/* Save the method's AML pointer and length */
obj_desc->method.aml_start = aml_start;
obj_desc->method.aml_length = aml_length;
obj_desc->method.node = operand[0];
/*
* Disassemble the method flags. Split off the arg_count, Serialized
* flag, and sync_level for efficiency.
*/
method_flags = (u8)operand[1]->integer.value;
obj_desc->method.param_count = (u8)
(method_flags & AML_METHOD_ARG_COUNT);
/*
* Get the sync_level. If method is serialized, a mutex will be
* created for this method when it is parsed.
*/
if (method_flags & AML_METHOD_SERIALIZED) {
obj_desc->method.info_flags = ACPI_METHOD_SERIALIZED;
/*
* ACPI 1.0: sync_level = 0
* ACPI 2.0: sync_level = sync_level in method declaration
*/
obj_desc->method.sync_level = (u8)
((method_flags & AML_METHOD_SYNC_LEVEL) >> 4);
}
/* Attach the new object to the method Node */
status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
obj_desc, ACPI_TYPE_METHOD);
/* Remove local reference to the object */
acpi_ut_remove_reference(obj_desc);
exit:
/* Remove a reference to the operand */
acpi_ut_remove_reference(operand[1]);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/excreate.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: psobject - Support for parse objects
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "amlcode.h"
#include "acconvert.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_PARSER
ACPI_MODULE_NAME("psobject")
/* Local prototypes */
static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state);
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_aml_opcode
*
* PARAMETERS: walk_state - Current state
*
* RETURN: Status
*
* DESCRIPTION: Extract the next AML opcode from the input stream.
*
******************************************************************************/
static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state)
{
ACPI_ERROR_ONLY(u32 aml_offset);
ACPI_FUNCTION_TRACE_PTR(ps_get_aml_opcode, walk_state);
walk_state->aml = walk_state->parser_state.aml;
walk_state->opcode = acpi_ps_peek_opcode(&(walk_state->parser_state));
/*
* First cut to determine what we have found:
* 1) A valid AML opcode
* 2) A name string
* 3) An unknown/invalid opcode
*/
walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode);
switch (walk_state->op_info->class) {
case AML_CLASS_ASCII:
case AML_CLASS_PREFIX:
/*
* Starts with a valid prefix or ASCII char, this is a name
* string. Convert the bare name string to a namepath.
*/
walk_state->opcode = AML_INT_NAMEPATH_OP;
walk_state->arg_types = ARGP_NAMESTRING;
break;
case AML_CLASS_UNKNOWN:
/* The opcode is unrecognized. Complain and skip unknown opcodes */
if (walk_state->pass_number == 2) {
ACPI_ERROR_ONLY(aml_offset =
(u32)ACPI_PTR_DIFF(walk_state->aml,
walk_state->
parser_state.
aml_start));
ACPI_ERROR((AE_INFO,
"Unknown opcode 0x%.2X at table offset 0x%.4X, ignoring",
walk_state->opcode,
(u32)(aml_offset +
sizeof(struct acpi_table_header))));
ACPI_DUMP_BUFFER((walk_state->parser_state.aml - 16),
48);
#ifdef ACPI_ASL_COMPILER
/*
* This is executed for the disassembler only. Output goes
* to the disassembled ASL output file.
*/
acpi_os_printf
("/*\nError: Unknown opcode 0x%.2X at table offset 0x%.4X, context:\n",
walk_state->opcode,
(u32)(aml_offset +
sizeof(struct acpi_table_header)));
ACPI_ERROR((AE_INFO,
"Aborting disassembly, AML byte code is corrupt"));
/* Dump the context surrounding the invalid opcode */
acpi_ut_dump_buffer(((u8 *)walk_state->parser_state.
aml - 16), 48, DB_BYTE_DISPLAY,
(aml_offset +
sizeof(struct acpi_table_header) -
16));
acpi_os_printf(" */\n");
/*
* Just abort the disassembly, cannot continue because the
* parser is essentially lost. The disassembler can then
* randomly fail because an ill-constructed parse tree
* can result.
*/
return_ACPI_STATUS(AE_AML_BAD_OPCODE);
#endif
}
/* Increment past one-byte or two-byte opcode */
walk_state->parser_state.aml++;
if (walk_state->opcode > 0xFF) { /* Can only happen if first byte is 0x5B */
walk_state->parser_state.aml++;
}
return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
default:
/* Found opcode info, this is a normal opcode */
walk_state->parser_state.aml +=
acpi_ps_get_opcode_size(walk_state->opcode);
walk_state->arg_types = walk_state->op_info->parse_args;
break;
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_build_named_op
*
* PARAMETERS: walk_state - Current state
* aml_op_start - Begin of named Op in AML
* unnamed_op - Early Op (not a named Op)
* op - Returned Op
*
* RETURN: Status
*
* DESCRIPTION: Parse a named Op
*
******************************************************************************/
acpi_status
acpi_ps_build_named_op(struct acpi_walk_state *walk_state,
u8 *aml_op_start,
union acpi_parse_object *unnamed_op,
union acpi_parse_object **op)
{
acpi_status status = AE_OK;
union acpi_parse_object *arg = NULL;
ACPI_FUNCTION_TRACE_PTR(ps_build_named_op, walk_state);
unnamed_op->common.value.arg = NULL;
unnamed_op->common.arg_list_length = 0;
unnamed_op->common.aml_opcode = walk_state->opcode;
/*
* Get and append arguments until we find the node that contains
* the name (the type ARGP_NAME).
*/
while (GET_CURRENT_ARG_TYPE(walk_state->arg_types) &&
(GET_CURRENT_ARG_TYPE(walk_state->arg_types) != ARGP_NAME)) {
ASL_CV_CAPTURE_COMMENTS(walk_state);
status =
acpi_ps_get_next_arg(walk_state,
&(walk_state->parser_state),
GET_CURRENT_ARG_TYPE(walk_state->
arg_types), &arg);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
acpi_ps_append_arg(unnamed_op, arg);
INCREMENT_ARG_LIST(walk_state->arg_types);
}
/* are there any inline comments associated with the name_seg?? If so, save this. */
ASL_CV_CAPTURE_COMMENTS(walk_state);
#ifdef ACPI_ASL_COMPILER
if (acpi_gbl_current_inline_comment != NULL) {
unnamed_op->common.name_comment =
acpi_gbl_current_inline_comment;
acpi_gbl_current_inline_comment = NULL;
}
#endif
/*
* Make sure that we found a NAME and didn't run out of arguments
*/
if (!GET_CURRENT_ARG_TYPE(walk_state->arg_types)) {
return_ACPI_STATUS(AE_AML_NO_OPERAND);
}
/* We know that this arg is a name, move to next arg */
INCREMENT_ARG_LIST(walk_state->arg_types);
/*
* Find the object. This will either insert the object into
* the namespace or simply look it up
*/
walk_state->op = NULL;
status = walk_state->descending_callback(walk_state, op);
if (ACPI_FAILURE(status)) {
if (status != AE_CTRL_TERMINATE) {
ACPI_EXCEPTION((AE_INFO, status,
"During name lookup/catalog"));
}
return_ACPI_STATUS(status);
}
if (!*op) {
return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
}
status = acpi_ps_next_parse_state(walk_state, *op, status);
if (ACPI_FAILURE(status)) {
if (status == AE_CTRL_PENDING) {
status = AE_CTRL_PARSE_PENDING;
}
return_ACPI_STATUS(status);
}
acpi_ps_append_arg(*op, unnamed_op->common.value.arg);
#ifdef ACPI_ASL_COMPILER
/* save any comments that might be associated with unnamed_op. */
(*op)->common.inline_comment = unnamed_op->common.inline_comment;
(*op)->common.end_node_comment = unnamed_op->common.end_node_comment;
(*op)->common.close_brace_comment =
unnamed_op->common.close_brace_comment;
(*op)->common.name_comment = unnamed_op->common.name_comment;
(*op)->common.comment_list = unnamed_op->common.comment_list;
(*op)->common.end_blk_comment = unnamed_op->common.end_blk_comment;
(*op)->common.cv_filename = unnamed_op->common.cv_filename;
(*op)->common.cv_parent_filename =
unnamed_op->common.cv_parent_filename;
(*op)->named.aml = unnamed_op->common.aml;
unnamed_op->common.inline_comment = NULL;
unnamed_op->common.end_node_comment = NULL;
unnamed_op->common.close_brace_comment = NULL;
unnamed_op->common.name_comment = NULL;
unnamed_op->common.comment_list = NULL;
unnamed_op->common.end_blk_comment = NULL;
#endif
if ((*op)->common.aml_opcode == AML_REGION_OP ||
(*op)->common.aml_opcode == AML_DATA_REGION_OP) {
/*
* Defer final parsing of an operation_region body, because we don't
* have enough info in the first pass to parse it correctly (i.e.,
* there may be method calls within the term_arg elements of the body.)
*
* However, we must continue parsing because the opregion is not a
* standalone package -- we don't know where the end is at this point.
*
* (Length is unknown until parse of the body complete)
*/
(*op)->named.data = aml_op_start;
(*op)->named.length = 0;
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_create_op
*
* PARAMETERS: walk_state - Current state
* aml_op_start - Op start in AML
* new_op - Returned Op
*
* RETURN: Status
*
* DESCRIPTION: Get Op from AML
*
******************************************************************************/
acpi_status
acpi_ps_create_op(struct acpi_walk_state *walk_state,
u8 *aml_op_start, union acpi_parse_object **new_op)
{
acpi_status status = AE_OK;
union acpi_parse_object *op;
union acpi_parse_object *named_op = NULL;
union acpi_parse_object *parent_scope;
u8 argument_count;
const struct acpi_opcode_info *op_info;
ACPI_FUNCTION_TRACE_PTR(ps_create_op, walk_state);
status = acpi_ps_get_aml_opcode(walk_state);
if (status == AE_CTRL_PARSE_CONTINUE) {
return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
}
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Create Op structure and append to parent's argument list */
walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode);
op = acpi_ps_alloc_op(walk_state->opcode, aml_op_start);
if (!op) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
if (walk_state->op_info->flags & AML_NAMED) {
status =
acpi_ps_build_named_op(walk_state, aml_op_start, op,
&named_op);
acpi_ps_free_op(op);
#ifdef ACPI_ASL_COMPILER
if (acpi_gbl_disasm_flag
&& walk_state->opcode == AML_EXTERNAL_OP
&& status == AE_NOT_FOUND) {
/*
* If parsing of AML_EXTERNAL_OP's name path fails, then skip
* past this opcode and keep parsing. This is a much better
* alternative than to abort the entire disassembler. At this
* point, the parser_state is at the end of the namepath of the
* external declaration opcode. Setting walk_state->Aml to
* walk_state->parser_state.Aml + 2 moves increments the
* walk_state->Aml past the object type and the paramcount of the
* external opcode.
*/
walk_state->aml = walk_state->parser_state.aml + 2;
walk_state->parser_state.aml = walk_state->aml;
return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
}
#endif
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
*new_op = named_op;
return_ACPI_STATUS(AE_OK);
}
/* Not a named opcode, just allocate Op and append to parent */
if (walk_state->op_info->flags & AML_CREATE) {
/*
* Backup to beginning of create_XXXfield declaration
* body_length is unknown until we parse the body
*/
op->named.data = aml_op_start;
op->named.length = 0;
}
if (walk_state->opcode == AML_BANK_FIELD_OP) {
/*
* Backup to beginning of bank_field declaration
* body_length is unknown until we parse the body
*/
op->named.data = aml_op_start;
op->named.length = 0;
}
parent_scope = acpi_ps_get_parent_scope(&(walk_state->parser_state));
acpi_ps_append_arg(parent_scope, op);
if (parent_scope) {
op_info =
acpi_ps_get_opcode_info(parent_scope->common.aml_opcode);
if (op_info->flags & AML_HAS_TARGET) {
argument_count =
acpi_ps_get_argument_count(op_info->type);
if (parent_scope->common.arg_list_length >
argument_count) {
op->common.flags |= ACPI_PARSEOP_TARGET;
}
}
/*
* Special case for both Increment() and Decrement(), where
* the lone argument is both a source and a target.
*/
else if ((parent_scope->common.aml_opcode == AML_INCREMENT_OP)
|| (parent_scope->common.aml_opcode ==
AML_DECREMENT_OP)) {
op->common.flags |= ACPI_PARSEOP_TARGET;
}
}
if (walk_state->descending_callback != NULL) {
/*
* Find the object. This will either insert the object into
* the namespace or simply look it up
*/
walk_state->op = *new_op = op;
status = walk_state->descending_callback(walk_state, &op);
status = acpi_ps_next_parse_state(walk_state, op, status);
if (status == AE_CTRL_PENDING) {
status = AE_CTRL_PARSE_PENDING;
}
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_complete_op
*
* PARAMETERS: walk_state - Current state
* op - Returned Op
* status - Parse status before complete Op
*
* RETURN: Status
*
* DESCRIPTION: Complete Op
*
******************************************************************************/
acpi_status
acpi_ps_complete_op(struct acpi_walk_state *walk_state,
union acpi_parse_object **op, acpi_status status)
{
acpi_status status2;
ACPI_FUNCTION_TRACE_PTR(ps_complete_op, walk_state);
/*
* Finished one argument of the containing scope
*/
walk_state->parser_state.scope->parse_scope.arg_count--;
/* Close this Op (will result in parse subtree deletion) */
status2 = acpi_ps_complete_this_op(walk_state, *op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
*op = NULL;
switch (status) {
case AE_OK:
break;
case AE_CTRL_TRANSFER:
/* We are about to transfer to a called method */
walk_state->prev_op = NULL;
walk_state->prev_arg_types = walk_state->arg_types;
return_ACPI_STATUS(status);
case AE_CTRL_END:
acpi_ps_pop_scope(&(walk_state->parser_state), op,
&walk_state->arg_types,
&walk_state->arg_count);
if (*op) {
walk_state->op = *op;
walk_state->op_info =
acpi_ps_get_opcode_info((*op)->common.aml_opcode);
walk_state->opcode = (*op)->common.aml_opcode;
status = walk_state->ascending_callback(walk_state);
(void)acpi_ps_next_parse_state(walk_state, *op, status);
status2 = acpi_ps_complete_this_op(walk_state, *op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
}
break;
case AE_CTRL_BREAK:
case AE_CTRL_CONTINUE:
/* Pop off scopes until we find the While */
while (!(*op) || ((*op)->common.aml_opcode != AML_WHILE_OP)) {
acpi_ps_pop_scope(&(walk_state->parser_state), op,
&walk_state->arg_types,
&walk_state->arg_count);
}
/* Close this iteration of the While loop */
walk_state->op = *op;
walk_state->op_info =
acpi_ps_get_opcode_info((*op)->common.aml_opcode);
walk_state->opcode = (*op)->common.aml_opcode;
status = walk_state->ascending_callback(walk_state);
(void)acpi_ps_next_parse_state(walk_state, *op, status);
status2 = acpi_ps_complete_this_op(walk_state, *op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
break;
case AE_CTRL_TERMINATE:
/* Clean up */
do {
if (*op) {
status2 =
acpi_ps_complete_this_op(walk_state, *op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
acpi_ut_delete_generic_state
(acpi_ut_pop_generic_state
(&walk_state->control_state));
}
acpi_ps_pop_scope(&(walk_state->parser_state), op,
&walk_state->arg_types,
&walk_state->arg_count);
} while (*op);
return_ACPI_STATUS(AE_OK);
default: /* All other non-AE_OK status */
do {
if (*op) {
/*
* These Opcodes need to be removed from the namespace because they
* get created even if these opcodes cannot be created due to
* errors.
*/
if (((*op)->common.aml_opcode == AML_REGION_OP)
|| ((*op)->common.aml_opcode ==
AML_DATA_REGION_OP)) {
acpi_ns_delete_children((*op)->common.
node);
acpi_ns_remove_node((*op)->common.node);
(*op)->common.node = NULL;
acpi_ps_delete_parse_tree(*op);
}
status2 =
acpi_ps_complete_this_op(walk_state, *op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
}
acpi_ps_pop_scope(&(walk_state->parser_state), op,
&walk_state->arg_types,
&walk_state->arg_count);
} while (*op);
#if 0
/*
* TBD: Cleanup parse ops on error
*/
if (*op == NULL) {
acpi_ps_pop_scope(parser_state, op,
&walk_state->arg_types,
&walk_state->arg_count);
}
#endif
walk_state->prev_op = NULL;
walk_state->prev_arg_types = walk_state->arg_types;
if (walk_state->parse_flags & ACPI_PARSE_MODULE_LEVEL) {
/*
* There was something that went wrong while executing code at the
* module-level. We need to skip parsing whatever caused the
* error and keep going. One runtime error during the table load
* should not cause the entire table to not be loaded. This is
* because there could be correct AML beyond the parts that caused
* the runtime error.
*/
ACPI_INFO(("Ignoring error and continuing table load"));
return_ACPI_STATUS(AE_OK);
}
return_ACPI_STATUS(status);
}
/* This scope complete? */
if (acpi_ps_has_completed_scope(&(walk_state->parser_state))) {
acpi_ps_pop_scope(&(walk_state->parser_state), op,
&walk_state->arg_types,
&walk_state->arg_count);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Popped scope, Op=%p\n", *op));
} else {
*op = NULL;
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_complete_final_op
*
* PARAMETERS: walk_state - Current state
* op - Current Op
* status - Current parse status before complete last
* Op
*
* RETURN: Status
*
* DESCRIPTION: Complete last Op.
*
******************************************************************************/
acpi_status
acpi_ps_complete_final_op(struct acpi_walk_state *walk_state,
union acpi_parse_object *op, acpi_status status)
{
acpi_status status2;
ACPI_FUNCTION_TRACE_PTR(ps_complete_final_op, walk_state);
/*
* Complete the last Op (if not completed), and clear the scope stack.
* It is easily possible to end an AML "package" with an unbounded number
* of open scopes (such as when several ASL blocks are closed with
* sequential closing braces). We want to terminate each one cleanly.
*/
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "AML package complete at Op %p\n",
op));
do {
if (op) {
if (walk_state->ascending_callback != NULL) {
walk_state->op = op;
walk_state->op_info =
acpi_ps_get_opcode_info(op->common.
aml_opcode);
walk_state->opcode = op->common.aml_opcode;
status =
walk_state->ascending_callback(walk_state);
status =
acpi_ps_next_parse_state(walk_state, op,
status);
if (status == AE_CTRL_PENDING) {
status =
acpi_ps_complete_op(walk_state, &op,
AE_OK);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
if (status == AE_CTRL_TERMINATE) {
status = AE_OK;
/* Clean up */
do {
if (op) {
status2 =
acpi_ps_complete_this_op
(walk_state, op);
if (ACPI_FAILURE
(status2)) {
return_ACPI_STATUS
(status2);
}
}
acpi_ps_pop_scope(&
(walk_state->
parser_state),
&op,
&walk_state->
arg_types,
&walk_state->
arg_count);
} while (op);
return_ACPI_STATUS(status);
}
else if (ACPI_FAILURE(status)) {
/* First error is most important */
(void)
acpi_ps_complete_this_op(walk_state,
op);
return_ACPI_STATUS(status);
}
}
status2 = acpi_ps_complete_this_op(walk_state, op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
}
acpi_ps_pop_scope(&(walk_state->parser_state), &op,
&walk_state->arg_types,
&walk_state->arg_count);
} while (op);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/psobject.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: hwvalid - I/O request validation
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_HARDWARE
ACPI_MODULE_NAME("hwvalid")
/* Local prototypes */
static acpi_status
acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width);
/*
* Protected I/O ports. Some ports are always illegal, and some are
* conditionally illegal. This table must remain ordered by port address.
*
* The table is used to implement the Microsoft port access rules that
* first appeared in Windows XP. Some ports are always illegal, and some
* ports are only illegal if the BIOS calls _OSI with nothing newer than
* the specific _OSI strings.
*
* This provides ACPICA with the desired port protections and
* Microsoft compatibility.
*
* Description of port entries:
* DMA: DMA controller
* PIC0: Programmable Interrupt Controller (8259A)
* PIT1: System Timer 1
* PIT2: System Timer 2 failsafe
* RTC: Real-time clock
* CMOS: Extended CMOS
* DMA1: DMA 1 page registers
* DMA1L: DMA 1 Ch 0 low page
* DMA2: DMA 2 page registers
* DMA2L: DMA 2 low page refresh
* ARBC: Arbitration control
* SETUP: Reserved system board setup
* POS: POS channel select
* PIC1: Cascaded PIC
* IDMA: ISA DMA
* ELCR: PIC edge/level registers
* PCI: PCI configuration space
*/
static const struct acpi_port_info acpi_protected_ports[] = {
{"DMA", 0x0000, 0x000F, ACPI_OSI_WIN_XP},
{"PIC0", 0x0020, 0x0021, ACPI_ALWAYS_ILLEGAL},
{"PIT1", 0x0040, 0x0043, ACPI_OSI_WIN_XP},
{"PIT2", 0x0048, 0x004B, ACPI_OSI_WIN_XP},
{"RTC", 0x0070, 0x0071, ACPI_OSI_WIN_XP},
{"CMOS", 0x0074, 0x0076, ACPI_OSI_WIN_XP},
{"DMA1", 0x0081, 0x0083, ACPI_OSI_WIN_XP},
{"DMA1L", 0x0087, 0x0087, ACPI_OSI_WIN_XP},
{"DMA2", 0x0089, 0x008B, ACPI_OSI_WIN_XP},
{"DMA2L", 0x008F, 0x008F, ACPI_OSI_WIN_XP},
{"ARBC", 0x0090, 0x0091, ACPI_OSI_WIN_XP},
{"SETUP", 0x0093, 0x0094, ACPI_OSI_WIN_XP},
{"POS", 0x0096, 0x0097, ACPI_OSI_WIN_XP},
{"PIC1", 0x00A0, 0x00A1, ACPI_ALWAYS_ILLEGAL},
{"IDMA", 0x00C0, 0x00DF, ACPI_OSI_WIN_XP},
{"ELCR", 0x04D0, 0x04D1, ACPI_ALWAYS_ILLEGAL},
{"PCI", 0x0CF8, 0x0CFF, ACPI_OSI_WIN_XP}
};
#define ACPI_PORT_INFO_ENTRIES ACPI_ARRAY_LENGTH (acpi_protected_ports)
/******************************************************************************
*
* FUNCTION: acpi_hw_validate_io_request
*
* PARAMETERS: Address Address of I/O port/register
* bit_width Number of bits (8,16,32)
*
* RETURN: Status
*
* DESCRIPTION: Validates an I/O request (address/length). Certain ports are
* always illegal and some ports are only illegal depending on
* the requests the BIOS AML code makes to the predefined
* _OSI method.
*
******************************************************************************/
static acpi_status
acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width)
{
u32 i;
u32 byte_width;
acpi_io_address last_address;
const struct acpi_port_info *port_info;
ACPI_FUNCTION_TRACE(hw_validate_io_request);
/* Supported widths are 8/16/32 */
if ((bit_width != 8) && (bit_width != 16) && (bit_width != 32)) {
ACPI_ERROR((AE_INFO,
"Bad BitWidth parameter: %8.8X", bit_width));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
port_info = acpi_protected_ports;
byte_width = ACPI_DIV_8(bit_width);
last_address = address + byte_width - 1;
ACPI_DEBUG_PRINT((ACPI_DB_IO,
"Address %8.8X%8.8X LastAddress %8.8X%8.8X Length %X",
ACPI_FORMAT_UINT64(address),
ACPI_FORMAT_UINT64(last_address), byte_width));
/* Maximum 16-bit address in I/O space */
if (last_address > ACPI_UINT16_MAX) {
ACPI_ERROR((AE_INFO,
"Illegal I/O port address/length above 64K: %8.8X%8.8X/0x%X",
ACPI_FORMAT_UINT64(address), byte_width));
return_ACPI_STATUS(AE_LIMIT);
}
/* Exit if requested address is not within the protected port table */
if (address > acpi_protected_ports[ACPI_PORT_INFO_ENTRIES - 1].end) {
return_ACPI_STATUS(AE_OK);
}
/* Check request against the list of protected I/O ports */
for (i = 0; i < ACPI_PORT_INFO_ENTRIES; i++, port_info++) {
/*
* Check if the requested address range will write to a reserved
* port. There are four cases to consider:
*
* 1) Address range is contained completely in the port address range
* 2) Address range overlaps port range at the port range start
* 3) Address range overlaps port range at the port range end
* 4) Address range completely encompasses the port range
*/
if ((address <= port_info->end)
&& (last_address >= port_info->start)) {
/* Port illegality may depend on the _OSI calls made by the BIOS */
if (port_info->osi_dependency == ACPI_ALWAYS_ILLEGAL ||
acpi_gbl_osi_data == port_info->osi_dependency) {
ACPI_DEBUG_PRINT((ACPI_DB_VALUES,
"Denied AML access to port 0x%8.8X%8.8X/%X (%s 0x%.4X-0x%.4X)\n",
ACPI_FORMAT_UINT64(address),
byte_width, port_info->name,
port_info->start,
port_info->end));
return_ACPI_STATUS(AE_AML_ILLEGAL_ADDRESS);
}
}
/* Finished if address range ends before the end of this port */
if (last_address <= port_info->end) {
break;
}
}
return_ACPI_STATUS(AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_read_port
*
* PARAMETERS: Address Address of I/O port/register to read
* Value Where value (data) is returned
* Width Number of bits
*
* RETURN: Status and value read from port
*
* DESCRIPTION: Read data from an I/O port or register. This is a front-end
* to acpi_os_read_port that performs validation on both the port
* address and the length.
*
*****************************************************************************/
acpi_status acpi_hw_read_port(acpi_io_address address, u32 *value, u32 width)
{
acpi_status status;
u32 one_byte;
u32 i;
/* Truncate address to 16 bits if requested */
if (acpi_gbl_truncate_io_addresses) {
address &= ACPI_UINT16_MAX;
}
/* Validate the entire request and perform the I/O */
status = acpi_hw_validate_io_request(address, width);
if (ACPI_SUCCESS(status)) {
status = acpi_os_read_port(address, value, width);
return (status);
}
if (status != AE_AML_ILLEGAL_ADDRESS) {
return (status);
}
/*
* There has been a protection violation within the request. Fall
* back to byte granularity port I/O and ignore the failing bytes.
* This provides compatibility with other ACPI implementations.
*/
for (i = 0, *value = 0; i < width; i += 8) {
/* Validate and read one byte */
if (acpi_hw_validate_io_request(address, 8) == AE_OK) {
status = acpi_os_read_port(address, &one_byte, 8);
if (ACPI_FAILURE(status)) {
return (status);
}
*value |= (one_byte << i);
}
address++;
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_write_port
*
* PARAMETERS: Address Address of I/O port/register to write
* Value Value to write
* Width Number of bits
*
* RETURN: Status
*
* DESCRIPTION: Write data to an I/O port or register. This is a front-end
* to acpi_os_write_port that performs validation on both the port
* address and the length.
*
*****************************************************************************/
acpi_status acpi_hw_write_port(acpi_io_address address, u32 value, u32 width)
{
acpi_status status;
u32 i;
/* Truncate address to 16 bits if requested */
if (acpi_gbl_truncate_io_addresses) {
address &= ACPI_UINT16_MAX;
}
/* Validate the entire request and perform the I/O */
status = acpi_hw_validate_io_request(address, width);
if (ACPI_SUCCESS(status)) {
status = acpi_os_write_port(address, value, width);
return (status);
}
if (status != AE_AML_ILLEGAL_ADDRESS) {
return (status);
}
/*
* There has been a protection violation within the request. Fall
* back to byte granularity port I/O and ignore the failing bytes.
* This provides compatibility with other ACPI implementations.
*/
for (i = 0; i < width; i += 8) {
/* Validate and write one byte */
if (acpi_hw_validate_io_request(address, 8) == AE_OK) {
status =
acpi_os_write_port(address, (value >> i) & 0xFF, 8);
if (ACPI_FAILURE(status)) {
return (status);
}
}
address++;
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_validate_io_block
*
* PARAMETERS: Address Address of I/O port/register blobk
* bit_width Number of bits (8,16,32) in each register
* count Number of registers in the block
*
* RETURN: Status
*
* DESCRIPTION: Validates a block of I/O ports/registers.
*
******************************************************************************/
acpi_status acpi_hw_validate_io_block(u64 address, u32 bit_width, u32 count)
{
acpi_status status;
while (count--) {
status = acpi_hw_validate_io_request((acpi_io_address)address,
bit_width);
if (ACPI_FAILURE(status))
return_ACPI_STATUS(status);
address += ACPI_DIV_8(bit_width);
}
return_ACPI_STATUS(AE_OK);
}
| linux-master | drivers/acpi/acpica/hwvalid.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: exresnte - AML Interpreter object resolution
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdispat.h"
#include "acinterp.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("exresnte")
/*******************************************************************************
*
* FUNCTION: acpi_ex_resolve_node_to_value
*
* PARAMETERS: object_ptr - Pointer to a location that contains
* a pointer to a NS node, and will receive a
* pointer to the resolved object.
* walk_state - Current state. Valid only if executing AML
* code. NULL if simply resolving an object
*
* RETURN: Status
*
* DESCRIPTION: Resolve a Namespace node to a valued object
*
* Note: for some of the data types, the pointer attached to the Node
* can be either a pointer to an actual internal object or a pointer into the
* AML stream itself. These types are currently:
*
* ACPI_TYPE_INTEGER
* ACPI_TYPE_STRING
* ACPI_TYPE_BUFFER
* ACPI_TYPE_MUTEX
* ACPI_TYPE_PACKAGE
*
******************************************************************************/
acpi_status
acpi_ex_resolve_node_to_value(struct acpi_namespace_node **object_ptr,
struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
union acpi_operand_object *source_desc;
union acpi_operand_object *obj_desc = NULL;
struct acpi_namespace_node *node;
acpi_object_type entry_type;
ACPI_FUNCTION_TRACE(ex_resolve_node_to_value);
/*
* The stack pointer points to a struct acpi_namespace_node (Node). Get the
* object that is attached to the Node.
*/
node = *object_ptr;
source_desc = acpi_ns_get_attached_object(node);
entry_type = acpi_ns_get_type((acpi_handle)node);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Entry=%p SourceDesc=%p [%s]\n",
node, source_desc,
acpi_ut_get_type_name(entry_type)));
if ((entry_type == ACPI_TYPE_LOCAL_ALIAS) ||
(entry_type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) {
/* There is always exactly one level of indirection */
node = ACPI_CAST_PTR(struct acpi_namespace_node, node->object);
source_desc = acpi_ns_get_attached_object(node);
entry_type = acpi_ns_get_type((acpi_handle)node);
*object_ptr = node;
}
/*
* Several object types require no further processing:
* 1) Device/Thermal objects don't have a "real" subobject, return Node
* 2) Method locals and arguments have a pseudo-Node
* 3) 10/2007: Added method type to assist with Package construction.
*/
if ((entry_type == ACPI_TYPE_DEVICE) ||
(entry_type == ACPI_TYPE_THERMAL) ||
(entry_type == ACPI_TYPE_METHOD) ||
(node->flags & (ANOBJ_METHOD_ARG | ANOBJ_METHOD_LOCAL))) {
return_ACPI_STATUS(AE_OK);
}
if (!source_desc) {
ACPI_ERROR((AE_INFO, "No object attached to node [%4.4s] %p",
node->name.ascii, node));
return_ACPI_STATUS(AE_AML_UNINITIALIZED_NODE);
}
/*
* Action is based on the type of the Node, which indicates the type
* of the attached object or pointer
*/
switch (entry_type) {
case ACPI_TYPE_PACKAGE:
if (source_desc->common.type != ACPI_TYPE_PACKAGE) {
ACPI_ERROR((AE_INFO, "Object not a Package, type %s",
acpi_ut_get_object_type_name(source_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
status = acpi_ds_get_package_arguments(source_desc);
if (ACPI_SUCCESS(status)) {
/* Return an additional reference to the object */
obj_desc = source_desc;
acpi_ut_add_reference(obj_desc);
}
break;
case ACPI_TYPE_BUFFER:
if (source_desc->common.type != ACPI_TYPE_BUFFER) {
ACPI_ERROR((AE_INFO, "Object not a Buffer, type %s",
acpi_ut_get_object_type_name(source_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
status = acpi_ds_get_buffer_arguments(source_desc);
if (ACPI_SUCCESS(status)) {
/* Return an additional reference to the object */
obj_desc = source_desc;
acpi_ut_add_reference(obj_desc);
}
break;
case ACPI_TYPE_STRING:
if (source_desc->common.type != ACPI_TYPE_STRING) {
ACPI_ERROR((AE_INFO, "Object not a String, type %s",
acpi_ut_get_object_type_name(source_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/* Return an additional reference to the object */
obj_desc = source_desc;
acpi_ut_add_reference(obj_desc);
break;
case ACPI_TYPE_INTEGER:
if (source_desc->common.type != ACPI_TYPE_INTEGER) {
ACPI_ERROR((AE_INFO, "Object not a Integer, type %s",
acpi_ut_get_object_type_name(source_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/* Return an additional reference to the object */
obj_desc = source_desc;
acpi_ut_add_reference(obj_desc);
break;
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
case ACPI_TYPE_LOCAL_INDEX_FIELD:
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"FieldRead Node=%p SourceDesc=%p Type=%X\n",
node, source_desc, entry_type));
status =
acpi_ex_read_data_from_field(walk_state, source_desc,
&obj_desc);
break;
/* For these objects, just return the object attached to the Node */
case ACPI_TYPE_MUTEX:
case ACPI_TYPE_POWER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_EVENT:
case ACPI_TYPE_REGION:
/* Return an additional reference to the object */
obj_desc = source_desc;
acpi_ut_add_reference(obj_desc);
break;
/* TYPE_ANY is untyped, and thus there is no object associated with it */
case ACPI_TYPE_ANY:
ACPI_ERROR((AE_INFO,
"Untyped entry %p, no attached object!", node));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE); /* Cannot be AE_TYPE */
case ACPI_TYPE_LOCAL_REFERENCE:
switch (source_desc->reference.class) {
case ACPI_REFCLASS_TABLE: /* This is a ddb_handle */
case ACPI_REFCLASS_REFOF:
case ACPI_REFCLASS_INDEX:
/* Return an additional reference to the object */
obj_desc = source_desc;
acpi_ut_add_reference(obj_desc);
break;
default:
/* No named references are allowed here */
ACPI_ERROR((AE_INFO,
"Unsupported Reference type 0x%X",
source_desc->reference.class));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
break;
default:
/* Default case is for unknown types */
ACPI_ERROR((AE_INFO,
"Node %p - Unknown object type 0x%X",
node, entry_type));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
} /* switch (entry_type) */
/* Return the object descriptor */
*object_ptr = (void *)obj_desc;
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/exresnte.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: utuuid -- UUID support functions
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_COMPILER
ACPI_MODULE_NAME("utuuid")
#if (defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP || defined ACPI_HELP_APP)
/*
* UUID support functions.
*
* This table is used to convert an input UUID ascii string to a 16 byte
* buffer and the reverse. The table maps a UUID buffer index 0-15 to
* the index within the 36-byte UUID string where the associated 2-byte
* hex value can be found.
*
* 36-byte UUID strings are of the form:
* aabbccdd-eeff-gghh-iijj-kkllmmnnoopp
* Where aa-pp are one byte hex numbers, made up of two hex digits
*
* Note: This table is basically the inverse of the string-to-offset table
* found in the ACPI spec in the description of the to_UUID macro.
*/
const u8 acpi_gbl_map_to_uuid_offset[UUID_BUFFER_LENGTH] = {
6, 4, 2, 0, 11, 9, 16, 14, 19, 21, 24, 26, 28, 30, 32, 34
};
/*******************************************************************************
*
* FUNCTION: acpi_ut_convert_string_to_uuid
*
* PARAMETERS: in_string - 36-byte formatted UUID string
* uuid_buffer - Where the 16-byte UUID buffer is returned
*
* RETURN: None. Output data is returned in the uuid_buffer
*
* DESCRIPTION: Convert a 36-byte formatted UUID string to 16-byte UUID buffer
*
******************************************************************************/
void acpi_ut_convert_string_to_uuid(char *in_string, u8 *uuid_buffer)
{
u32 i;
for (i = 0; i < UUID_BUFFER_LENGTH; i++) {
uuid_buffer[i] =
(acpi_ut_ascii_char_to_hex
(in_string[acpi_gbl_map_to_uuid_offset[i]]) << 4);
uuid_buffer[i] |=
acpi_ut_ascii_char_to_hex(in_string
[acpi_gbl_map_to_uuid_offset[i] +
1]);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_convert_uuid_to_string
*
* PARAMETERS: uuid_buffer - 16-byte UUID buffer
* out_string - 36-byte formatted UUID string
*
* RETURN: Status
*
* DESCRIPTION: Convert 16-byte UUID buffer to 36-byte formatted UUID string
* out_string must be 37 bytes to include null terminator.
*
******************************************************************************/
acpi_status acpi_ut_convert_uuid_to_string(char *uuid_buffer, char *out_string)
{
u32 i;
if (!uuid_buffer || !out_string) {
return (AE_BAD_PARAMETER);
}
for (i = 0; i < UUID_BUFFER_LENGTH; i++) {
out_string[acpi_gbl_map_to_uuid_offset[i]] =
acpi_ut_hex_to_ascii_char(uuid_buffer[i], 4);
out_string[acpi_gbl_map_to_uuid_offset[i] + 1] =
acpi_ut_hex_to_ascii_char(uuid_buffer[i], 0);
}
/* Insert required hyphens (dashes) */
out_string[UUID_HYPHEN1_OFFSET] =
out_string[UUID_HYPHEN2_OFFSET] =
out_string[UUID_HYPHEN3_OFFSET] =
out_string[UUID_HYPHEN4_OFFSET] = '-';
out_string[UUID_STRING_LENGTH] = 0; /* Null terminate */
return (AE_OK);
}
#endif
| linux-master | drivers/acpi/acpica/utuuid.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: evmisc - Miscellaneous event manager support functions
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acevents.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evmisc")
/* Local prototypes */
static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context);
/*******************************************************************************
*
* FUNCTION: acpi_ev_is_notify_object
*
* PARAMETERS: node - Node to check
*
* RETURN: TRUE if notifies allowed on this object
*
* DESCRIPTION: Check type of node for a object that supports notifies.
*
* TBD: This could be replaced by a flag bit in the node.
*
******************************************************************************/
u8 acpi_ev_is_notify_object(struct acpi_namespace_node *node)
{
switch (node->type) {
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
/*
* These are the ONLY objects that can receive ACPI notifications
*/
return (TRUE);
default:
return (FALSE);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_queue_notify_request
*
* PARAMETERS: node - NS node for the notified object
* notify_value - Value from the Notify() request
*
* RETURN: Status
*
* DESCRIPTION: Dispatch a device notification event to a previously
* installed handler.
*
******************************************************************************/
acpi_status
acpi_ev_queue_notify_request(struct acpi_namespace_node *node, u32 notify_value)
{
union acpi_operand_object *obj_desc;
union acpi_operand_object *handler_list_head = NULL;
union acpi_generic_state *info;
u8 handler_list_id = 0;
acpi_status status = AE_OK;
ACPI_FUNCTION_NAME(ev_queue_notify_request);
/* Are Notifies allowed on this object? */
if (!acpi_ev_is_notify_object(node)) {
return (AE_TYPE);
}
/* Get the correct notify list type (System or Device) */
if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
handler_list_id = ACPI_SYSTEM_HANDLER_LIST;
} else {
handler_list_id = ACPI_DEVICE_HANDLER_LIST;
}
/* Get the notify object attached to the namespace Node */
obj_desc = acpi_ns_get_attached_object(node);
if (obj_desc) {
/* We have an attached object, Get the correct handler list */
handler_list_head =
obj_desc->common_notify.notify_list[handler_list_id];
}
/*
* If there is no notify handler (Global or Local)
* for this object, just ignore the notify
*/
if (!acpi_gbl_global_notify[handler_list_id].handler
&& !handler_list_head) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No notify handler for Notify, ignoring (%4.4s, %X) node %p\n",
acpi_ut_get_node_name(node), notify_value,
node));
return (AE_OK);
}
/* Setup notify info and schedule the notify dispatcher */
info = acpi_ut_create_generic_state();
if (!info) {
return (AE_NO_MEMORY);
}
info->common.descriptor_type = ACPI_DESC_TYPE_STATE_NOTIFY;
info->notify.node = node;
info->notify.value = (u16)notify_value;
info->notify.handler_list_id = handler_list_id;
info->notify.handler_list_head = handler_list_head;
info->notify.global = &acpi_gbl_global_notify[handler_list_id];
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Dispatching Notify on [%4.4s] (%s) Value 0x%2.2X (%s) Node %p\n",
acpi_ut_get_node_name(node),
acpi_ut_get_type_name(node->type), notify_value,
acpi_ut_get_notify_name(notify_value, ACPI_TYPE_ANY),
node));
status = acpi_os_execute(OSL_NOTIFY_HANDLER,
acpi_ev_notify_dispatch, info);
if (ACPI_FAILURE(status)) {
acpi_ut_delete_generic_state(info);
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_notify_dispatch
*
* PARAMETERS: context - To be passed to the notify handler
*
* RETURN: None.
*
* DESCRIPTION: Dispatch a device notification event to a previously
* installed handler.
*
******************************************************************************/
static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context)
{
union acpi_generic_state *info = (union acpi_generic_state *)context;
union acpi_operand_object *handler_obj;
ACPI_FUNCTION_ENTRY();
/* Invoke a global notify handler if installed */
if (info->notify.global->handler) {
info->notify.global->handler(info->notify.node,
info->notify.value,
info->notify.global->context);
}
/* Now invoke the local notify handler(s) if any are installed */
handler_obj = info->notify.handler_list_head;
while (handler_obj) {
handler_obj->notify.handler(info->notify.node,
info->notify.value,
handler_obj->notify.context);
handler_obj =
handler_obj->notify.next[info->notify.handler_list_id];
}
/* All done with the info object */
acpi_ut_delete_generic_state(info);
}
#if (!ACPI_REDUCED_HARDWARE)
/******************************************************************************
*
* FUNCTION: acpi_ev_terminate
*
* PARAMETERS: none
*
* RETURN: none
*
* DESCRIPTION: Disable events and free memory allocated for table storage.
*
******************************************************************************/
void acpi_ev_terminate(void)
{
u32 i;
acpi_status status;
ACPI_FUNCTION_TRACE(ev_terminate);
if (acpi_gbl_events_initialized) {
/*
* Disable all event-related functionality. In all cases, on error,
* print a message but obviously we don't abort.
*/
/* Disable all fixed events */
for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
status = acpi_disable_event(i, 0);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO,
"Could not disable fixed event %u",
(u32) i));
}
}
/* Disable all GPEs in all GPE blocks */
status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block, NULL);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not disable GPEs in GPE block"));
}
status = acpi_ev_remove_global_lock_handler();
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not remove Global Lock handler"));
}
acpi_gbl_events_initialized = FALSE;
}
/* Remove SCI handlers */
status = acpi_ev_remove_all_sci_handlers();
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO, "Could not remove SCI handler"));
}
/* Deallocate all handler objects installed within GPE info structs */
status = acpi_ev_walk_gpe_list(acpi_ev_delete_gpe_handlers, NULL);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not delete GPE handlers"));
}
/* Return to original mode if necessary */
if (acpi_gbl_original_mode == ACPI_SYS_MODE_LEGACY) {
status = acpi_disable();
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO, "AcpiDisable failed"));
}
}
return_VOID;
}
#endif /* !ACPI_REDUCED_HARDWARE */
| linux-master | drivers/acpi/acpica/evmisc.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: dbcmds - Miscellaneous debug commands and output routines
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acevents.h"
#include "acdebug.h"
#include "acnamesp.h"
#include "acresrc.h"
#include "actables.h"
#define _COMPONENT ACPI_CA_DEBUGGER
ACPI_MODULE_NAME("dbcmds")
/* Local prototypes */
static void
acpi_dm_compare_aml_resources(u8 *aml1_buffer,
acpi_rsdesc_size aml1_buffer_length,
u8 *aml2_buffer,
acpi_rsdesc_size aml2_buffer_length);
static acpi_status
acpi_dm_test_resource_conversion(struct acpi_namespace_node *node, char *name);
static acpi_status
acpi_db_resource_callback(struct acpi_resource *resource, void *context);
static acpi_status
acpi_db_device_resources(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value);
static void acpi_db_do_one_sleep_state(u8 sleep_state);
static char *acpi_db_trace_method_name = NULL;
/*******************************************************************************
*
* FUNCTION: acpi_db_convert_to_node
*
* PARAMETERS: in_string - String to convert
*
* RETURN: Pointer to a NS node
*
* DESCRIPTION: Convert a string to a valid NS pointer. Handles numeric or
* alphanumeric strings.
*
******************************************************************************/
struct acpi_namespace_node *acpi_db_convert_to_node(char *in_string)
{
struct acpi_namespace_node *node;
acpi_size address;
if ((*in_string >= 0x30) && (*in_string <= 0x39)) {
/* Numeric argument, convert */
address = strtoul(in_string, NULL, 16);
node = ACPI_TO_POINTER(address);
if (!acpi_os_readable(node, sizeof(struct acpi_namespace_node))) {
acpi_os_printf("Address %p is invalid", node);
return (NULL);
}
/* Make sure pointer is valid NS node */
if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
acpi_os_printf
("Address %p is not a valid namespace node [%s]\n",
node, acpi_ut_get_descriptor_name(node));
return (NULL);
}
} else {
/*
* Alpha argument: The parameter is a name string that must be
* resolved to a Namespace object.
*/
node = acpi_db_local_ns_lookup(in_string);
if (!node) {
acpi_os_printf
("Could not find [%s] in namespace, defaulting to root node\n",
in_string);
node = acpi_gbl_root_node;
}
}
return (node);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_sleep
*
* PARAMETERS: object_arg - Desired sleep state (0-5). NULL means
* invoke all possible sleep states.
*
* RETURN: Status
*
* DESCRIPTION: Simulate sleep/wake sequences
*
******************************************************************************/
acpi_status acpi_db_sleep(char *object_arg)
{
u8 sleep_state;
u32 i;
ACPI_FUNCTION_TRACE(acpi_db_sleep);
/* Null input (no arguments) means to invoke all sleep states */
if (!object_arg) {
acpi_os_printf("Invoking all possible sleep states, 0-%d\n",
ACPI_S_STATES_MAX);
for (i = 0; i <= ACPI_S_STATES_MAX; i++) {
acpi_db_do_one_sleep_state((u8)i);
}
return_ACPI_STATUS(AE_OK);
}
/* Convert argument to binary and invoke the sleep state */
sleep_state = (u8)strtoul(object_arg, NULL, 0);
acpi_db_do_one_sleep_state(sleep_state);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_do_one_sleep_state
*
* PARAMETERS: sleep_state - Desired sleep state (0-5)
*
* RETURN: None
*
* DESCRIPTION: Simulate a sleep/wake sequence
*
******************************************************************************/
static void acpi_db_do_one_sleep_state(u8 sleep_state)
{
acpi_status status;
u8 sleep_type_a;
u8 sleep_type_b;
/* Validate parameter */
if (sleep_state > ACPI_S_STATES_MAX) {
acpi_os_printf("Sleep state %d out of range (%d max)\n",
sleep_state, ACPI_S_STATES_MAX);
return;
}
acpi_os_printf("\n---- Invoking sleep state S%d (%s):\n",
sleep_state, acpi_gbl_sleep_state_names[sleep_state]);
/* Get the values for the sleep type registers (for display only) */
status =
acpi_get_sleep_type_data(sleep_state, &sleep_type_a, &sleep_type_b);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not evaluate [%s] method, %s\n",
acpi_gbl_sleep_state_names[sleep_state],
acpi_format_exception(status));
return;
}
acpi_os_printf
("Register values for sleep state S%d: Sleep-A: %.2X, Sleep-B: %.2X\n",
sleep_state, sleep_type_a, sleep_type_b);
/* Invoke the various sleep/wake interfaces */
acpi_os_printf("**** Sleep: Prepare to sleep (S%d) ****\n",
sleep_state);
status = acpi_enter_sleep_state_prep(sleep_state);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
acpi_os_printf("**** Sleep: Going to sleep (S%d) ****\n", sleep_state);
status = acpi_enter_sleep_state(sleep_state);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
acpi_os_printf("**** Wake: Prepare to return from sleep (S%d) ****\n",
sleep_state);
status = acpi_leave_sleep_state_prep(sleep_state);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
acpi_os_printf("**** Wake: Return from sleep (S%d) ****\n",
sleep_state);
status = acpi_leave_sleep_state(sleep_state);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
return;
error_exit:
ACPI_EXCEPTION((AE_INFO, status, "During invocation of sleep state S%d",
sleep_state));
}
/*******************************************************************************
*
* FUNCTION: acpi_db_display_locks
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Display information about internal mutexes.
*
******************************************************************************/
void acpi_db_display_locks(void)
{
u32 i;
for (i = 0; i < ACPI_MAX_MUTEX; i++) {
acpi_os_printf("%26s : %s\n", acpi_ut_get_mutex_name(i),
acpi_gbl_mutex_info[i].thread_id ==
ACPI_MUTEX_NOT_ACQUIRED ? "Locked" : "Unlocked");
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_display_table_info
*
* PARAMETERS: table_arg - Name of table to be displayed
*
* RETURN: None
*
* DESCRIPTION: Display information about loaded tables. Current
* implementation displays all loaded tables.
*
******************************************************************************/
void acpi_db_display_table_info(char *table_arg)
{
u32 i;
struct acpi_table_desc *table_desc;
acpi_status status;
/* Header */
acpi_os_printf("Idx ID Status Type "
"TableHeader (Sig, Address, Length, Misc)\n");
/* Walk the entire root table list */
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) {
table_desc = &acpi_gbl_root_table_list.tables[i];
/* Index and Table ID */
acpi_os_printf("%3u %.2u ", i, table_desc->owner_id);
/* Decode the table flags */
if (!(table_desc->flags & ACPI_TABLE_IS_LOADED)) {
acpi_os_printf("NotLoaded ");
} else {
acpi_os_printf(" Loaded ");
}
switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
acpi_os_printf("External/virtual ");
break;
case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
acpi_os_printf("Internal/physical ");
break;
case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
acpi_os_printf("Internal/virtual ");
break;
default:
acpi_os_printf("INVALID TYPE ");
break;
}
/* Make sure that the table is mapped */
status = acpi_tb_validate_table(table_desc);
if (ACPI_FAILURE(status)) {
return;
}
/* Dump the table header */
if (table_desc->pointer) {
acpi_tb_print_table_header(table_desc->address,
table_desc->pointer);
} else {
/* If the pointer is null, the table has been unloaded */
ACPI_INFO(("%4.4s - Table has been unloaded",
table_desc->signature.ascii));
}
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_unload_acpi_table
*
* PARAMETERS: object_name - Namespace pathname for an object that
* is owned by the table to be unloaded
*
* RETURN: None
*
* DESCRIPTION: Unload an ACPI table, via any namespace node that is owned
* by the table.
*
******************************************************************************/
void acpi_db_unload_acpi_table(char *object_name)
{
struct acpi_namespace_node *node;
acpi_status status;
/* Translate name to an Named object */
node = acpi_db_convert_to_node(object_name);
if (!node) {
return;
}
status = acpi_unload_parent_table(ACPI_CAST_PTR(acpi_handle, node));
if (ACPI_SUCCESS(status)) {
acpi_os_printf("Parent of [%s] (%p) unloaded and uninstalled\n",
object_name, node);
} else {
acpi_os_printf("%s, while unloading parent table of [%s]\n",
acpi_format_exception(status), object_name);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_send_notify
*
* PARAMETERS: name - Name of ACPI object where to send notify
* value - Value of the notify to send.
*
* RETURN: None
*
* DESCRIPTION: Send an ACPI notification. The value specified is sent to the
* named object as an ACPI notify.
*
******************************************************************************/
void acpi_db_send_notify(char *name, u32 value)
{
struct acpi_namespace_node *node;
acpi_status status;
/* Translate name to an Named object */
node = acpi_db_convert_to_node(name);
if (!node) {
return;
}
/* Dispatch the notify if legal */
if (acpi_ev_is_notify_object(node)) {
status = acpi_ev_queue_notify_request(node, value);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not queue notify\n");
}
} else {
acpi_os_printf("Named object [%4.4s] Type %s, "
"must be Device/Thermal/Processor type\n",
acpi_ut_get_node_name(node),
acpi_ut_get_type_name(node->type));
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_display_interfaces
*
* PARAMETERS: action_arg - Null, "install", or "remove"
* interface_name_arg - Name for install/remove options
*
* RETURN: None
*
* DESCRIPTION: Display or modify the global _OSI interface list
*
******************************************************************************/
void acpi_db_display_interfaces(char *action_arg, char *interface_name_arg)
{
struct acpi_interface_info *next_interface;
char *sub_string;
acpi_status status;
/* If no arguments, just display current interface list */
if (!action_arg) {
(void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex,
ACPI_WAIT_FOREVER);
next_interface = acpi_gbl_supported_interfaces;
while (next_interface) {
if (!(next_interface->flags & ACPI_OSI_INVALID)) {
acpi_os_printf("%s\n", next_interface->name);
}
next_interface = next_interface->next;
}
acpi_os_release_mutex(acpi_gbl_osi_mutex);
return;
}
/* If action_arg exists, so must interface_name_arg */
if (!interface_name_arg) {
acpi_os_printf("Missing Interface Name argument\n");
return;
}
/* Uppercase the action for match below */
acpi_ut_strupr(action_arg);
/* install - install an interface */
sub_string = strstr("INSTALL", action_arg);
if (sub_string) {
status = acpi_install_interface(interface_name_arg);
if (ACPI_FAILURE(status)) {
acpi_os_printf("%s, while installing \"%s\"\n",
acpi_format_exception(status),
interface_name_arg);
}
return;
}
/* remove - remove an interface */
sub_string = strstr("REMOVE", action_arg);
if (sub_string) {
status = acpi_remove_interface(interface_name_arg);
if (ACPI_FAILURE(status)) {
acpi_os_printf("%s, while removing \"%s\"\n",
acpi_format_exception(status),
interface_name_arg);
}
return;
}
/* Invalid action_arg */
acpi_os_printf("Invalid action argument: %s\n", action_arg);
return;
}
/*******************************************************************************
*
* FUNCTION: acpi_db_display_template
*
* PARAMETERS: buffer_arg - Buffer name or address
*
* RETURN: None
*
* DESCRIPTION: Dump a buffer that contains a resource template
*
******************************************************************************/
void acpi_db_display_template(char *buffer_arg)
{
struct acpi_namespace_node *node;
acpi_status status;
struct acpi_buffer return_buffer;
/* Translate buffer_arg to an Named object */
node = acpi_db_convert_to_node(buffer_arg);
if (!node || (node == acpi_gbl_root_node)) {
acpi_os_printf("Invalid argument: %s\n", buffer_arg);
return;
}
/* We must have a buffer object */
if (node->type != ACPI_TYPE_BUFFER) {
acpi_os_printf
("Not a Buffer object, cannot be a template: %s\n",
buffer_arg);
return;
}
return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
return_buffer.pointer = acpi_gbl_db_buffer;
/* Attempt to convert the raw buffer to a resource list */
status = acpi_rs_create_resource_list(node->object, &return_buffer);
acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
acpi_dbg_level |= ACPI_LV_RESOURCES;
if (ACPI_FAILURE(status)) {
acpi_os_printf
("Could not convert Buffer to a resource list: %s, %s\n",
buffer_arg, acpi_format_exception(status));
goto dump_buffer;
}
/* Now we can dump the resource list */
acpi_rs_dump_resource_list(ACPI_CAST_PTR(struct acpi_resource,
return_buffer.pointer));
dump_buffer:
acpi_os_printf("\nRaw data buffer:\n");
acpi_ut_debug_dump_buffer((u8 *)node->object->buffer.pointer,
node->object->buffer.length,
DB_BYTE_DISPLAY, ACPI_UINT32_MAX);
acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
return;
}
/*******************************************************************************
*
* FUNCTION: acpi_dm_compare_aml_resources
*
* PARAMETERS: aml1_buffer - Contains first resource list
* aml1_buffer_length - Length of first resource list
* aml2_buffer - Contains second resource list
* aml2_buffer_length - Length of second resource list
*
* RETURN: None
*
* DESCRIPTION: Compare two AML resource lists, descriptor by descriptor (in
* order to isolate a miscompare to an individual resource)
*
******************************************************************************/
static void
acpi_dm_compare_aml_resources(u8 *aml1_buffer,
acpi_rsdesc_size aml1_buffer_length,
u8 *aml2_buffer,
acpi_rsdesc_size aml2_buffer_length)
{
u8 *aml1;
u8 *aml2;
u8 *aml1_end;
u8 *aml2_end;
acpi_rsdesc_size aml1_length;
acpi_rsdesc_size aml2_length;
acpi_rsdesc_size offset = 0;
u8 resource_type;
u32 count = 0;
u32 i;
/* Compare overall buffer sizes (may be different due to size rounding) */
if (aml1_buffer_length != aml2_buffer_length) {
acpi_os_printf("**** Buffer length mismatch in converted "
"AML: Original %X, New %X ****\n",
aml1_buffer_length, aml2_buffer_length);
}
aml1 = aml1_buffer;
aml2 = aml2_buffer;
aml1_end = aml1_buffer + aml1_buffer_length;
aml2_end = aml2_buffer + aml2_buffer_length;
/* Walk the descriptor lists, comparing each descriptor */
while ((aml1 < aml1_end) && (aml2 < aml2_end)) {
/* Get the lengths of each descriptor */
aml1_length = acpi_ut_get_descriptor_length(aml1);
aml2_length = acpi_ut_get_descriptor_length(aml2);
resource_type = acpi_ut_get_resource_type(aml1);
/* Check for descriptor length match */
if (aml1_length != aml2_length) {
acpi_os_printf
("**** Length mismatch in descriptor [%.2X] type %2.2X, "
"Offset %8.8X Len1 %X, Len2 %X ****\n", count,
resource_type, offset, aml1_length, aml2_length);
}
/* Check for descriptor byte match */
else if (memcmp(aml1, aml2, aml1_length)) {
acpi_os_printf
("**** Data mismatch in descriptor [%.2X] type %2.2X, "
"Offset %8.8X ****\n", count, resource_type,
offset);
for (i = 0; i < aml1_length; i++) {
if (aml1[i] != aml2[i]) {
acpi_os_printf
("Mismatch at byte offset %.2X: is %2.2X, "
"should be %2.2X\n", i, aml2[i],
aml1[i]);
}
}
}
/* Exit on end_tag descriptor */
if (resource_type == ACPI_RESOURCE_NAME_END_TAG) {
return;
}
/* Point to next descriptor in each buffer */
count++;
offset += aml1_length;
aml1 += aml1_length;
aml2 += aml2_length;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_dm_test_resource_conversion
*
* PARAMETERS: node - Parent device node
* name - resource method name (_CRS)
*
* RETURN: Status
*
* DESCRIPTION: Compare the original AML with a conversion of the AML to
* internal resource list, then back to AML.
*
******************************************************************************/
static acpi_status
acpi_dm_test_resource_conversion(struct acpi_namespace_node *node, char *name)
{
acpi_status status;
struct acpi_buffer return_buffer;
struct acpi_buffer resource_buffer;
struct acpi_buffer new_aml;
union acpi_object *original_aml;
acpi_os_printf("Resource Conversion Comparison:\n");
new_aml.length = ACPI_ALLOCATE_LOCAL_BUFFER;
return_buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
resource_buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
/* Get the original _CRS AML resource template */
status = acpi_evaluate_object(node, name, NULL, &return_buffer);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not obtain %s: %s\n",
name, acpi_format_exception(status));
return (status);
}
/* Get the AML resource template, converted to internal resource structs */
status = acpi_get_current_resources(node, &resource_buffer);
if (ACPI_FAILURE(status)) {
acpi_os_printf("AcpiGetCurrentResources failed: %s\n",
acpi_format_exception(status));
goto exit1;
}
/* Convert internal resource list to external AML resource template */
status = acpi_rs_create_aml_resources(&resource_buffer, &new_aml);
if (ACPI_FAILURE(status)) {
acpi_os_printf("AcpiRsCreateAmlResources failed: %s\n",
acpi_format_exception(status));
goto exit2;
}
/* Compare original AML to the newly created AML resource list */
original_aml = return_buffer.pointer;
acpi_dm_compare_aml_resources(original_aml->buffer.pointer,
(acpi_rsdesc_size)original_aml->buffer.
length, new_aml.pointer,
(acpi_rsdesc_size)new_aml.length);
/* Cleanup and exit */
ACPI_FREE(new_aml.pointer);
exit2:
ACPI_FREE(resource_buffer.pointer);
exit1:
ACPI_FREE(return_buffer.pointer);
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_resource_callback
*
* PARAMETERS: acpi_walk_resource_callback
*
* RETURN: Status
*
* DESCRIPTION: Simple callback to exercise acpi_walk_resources and
* acpi_walk_resource_buffer.
*
******************************************************************************/
static acpi_status
acpi_db_resource_callback(struct acpi_resource *resource, void *context)
{
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_device_resources
*
* PARAMETERS: acpi_walk_callback
*
* RETURN: Status
*
* DESCRIPTION: Display the _PRT/_CRS/_PRS resources for a device object.
*
******************************************************************************/
static acpi_status
acpi_db_device_resources(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value)
{
struct acpi_namespace_node *node;
struct acpi_namespace_node *prt_node = NULL;
struct acpi_namespace_node *crs_node = NULL;
struct acpi_namespace_node *prs_node = NULL;
struct acpi_namespace_node *aei_node = NULL;
char *parent_path;
struct acpi_buffer return_buffer;
acpi_status status;
node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
parent_path = acpi_ns_get_normalized_pathname(node, TRUE);
if (!parent_path) {
return (AE_NO_MEMORY);
}
/* Get handles to the resource methods for this device */
(void)acpi_get_handle(node, METHOD_NAME__PRT,
ACPI_CAST_PTR(acpi_handle, &prt_node));
(void)acpi_get_handle(node, METHOD_NAME__CRS,
ACPI_CAST_PTR(acpi_handle, &crs_node));
(void)acpi_get_handle(node, METHOD_NAME__PRS,
ACPI_CAST_PTR(acpi_handle, &prs_node));
(void)acpi_get_handle(node, METHOD_NAME__AEI,
ACPI_CAST_PTR(acpi_handle, &aei_node));
if (!prt_node && !crs_node && !prs_node && !aei_node) {
goto cleanup; /* Nothing to do */
}
acpi_os_printf("\nDevice: %s\n", parent_path);
/* Prepare for a return object of arbitrary size */
return_buffer.pointer = acpi_gbl_db_buffer;
return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
/* _PRT */
if (prt_node) {
acpi_os_printf("Evaluating _PRT\n");
status =
acpi_evaluate_object(prt_node, NULL, NULL, &return_buffer);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not evaluate _PRT: %s\n",
acpi_format_exception(status));
goto get_crs;
}
return_buffer.pointer = acpi_gbl_db_buffer;
return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
status = acpi_get_irq_routing_table(node, &return_buffer);
if (ACPI_FAILURE(status)) {
acpi_os_printf("GetIrqRoutingTable failed: %s\n",
acpi_format_exception(status));
goto get_crs;
}
acpi_rs_dump_irq_list(ACPI_CAST_PTR(u8, acpi_gbl_db_buffer));
}
/* _CRS */
get_crs:
if (crs_node) {
acpi_os_printf("Evaluating _CRS\n");
return_buffer.pointer = acpi_gbl_db_buffer;
return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
status =
acpi_evaluate_object(crs_node, NULL, NULL, &return_buffer);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not evaluate _CRS: %s\n",
acpi_format_exception(status));
goto get_prs;
}
/* This code exercises the acpi_walk_resources interface */
status = acpi_walk_resources(node, METHOD_NAME__CRS,
acpi_db_resource_callback, NULL);
if (ACPI_FAILURE(status)) {
acpi_os_printf("AcpiWalkResources failed: %s\n",
acpi_format_exception(status));
goto get_prs;
}
/* Get the _CRS resource list (test ALLOCATE buffer) */
return_buffer.pointer = NULL;
return_buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_get_current_resources(node, &return_buffer);
if (ACPI_FAILURE(status)) {
acpi_os_printf("AcpiGetCurrentResources failed: %s\n",
acpi_format_exception(status));
goto get_prs;
}
/* This code exercises the acpi_walk_resource_buffer interface */
status = acpi_walk_resource_buffer(&return_buffer,
acpi_db_resource_callback,
NULL);
if (ACPI_FAILURE(status)) {
acpi_os_printf("AcpiWalkResourceBuffer failed: %s\n",
acpi_format_exception(status));
goto end_crs;
}
/* Dump the _CRS resource list */
acpi_rs_dump_resource_list(ACPI_CAST_PTR(struct acpi_resource,
return_buffer.
pointer));
/*
* Perform comparison of original AML to newly created AML. This
* tests both the AML->Resource conversion and the Resource->AML
* conversion.
*/
(void)acpi_dm_test_resource_conversion(node, METHOD_NAME__CRS);
/* Execute _SRS with the resource list */
acpi_os_printf("Evaluating _SRS\n");
status = acpi_set_current_resources(node, &return_buffer);
if (ACPI_FAILURE(status)) {
acpi_os_printf("AcpiSetCurrentResources failed: %s\n",
acpi_format_exception(status));
goto end_crs;
}
end_crs:
ACPI_FREE(return_buffer.pointer);
}
/* _PRS */
get_prs:
if (prs_node) {
acpi_os_printf("Evaluating _PRS\n");
return_buffer.pointer = acpi_gbl_db_buffer;
return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
status =
acpi_evaluate_object(prs_node, NULL, NULL, &return_buffer);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not evaluate _PRS: %s\n",
acpi_format_exception(status));
goto get_aei;
}
return_buffer.pointer = acpi_gbl_db_buffer;
return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
status = acpi_get_possible_resources(node, &return_buffer);
if (ACPI_FAILURE(status)) {
acpi_os_printf("AcpiGetPossibleResources failed: %s\n",
acpi_format_exception(status));
goto get_aei;
}
acpi_rs_dump_resource_list(ACPI_CAST_PTR
(struct acpi_resource,
acpi_gbl_db_buffer));
}
/* _AEI */
get_aei:
if (aei_node) {
acpi_os_printf("Evaluating _AEI\n");
return_buffer.pointer = acpi_gbl_db_buffer;
return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
status =
acpi_evaluate_object(aei_node, NULL, NULL, &return_buffer);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not evaluate _AEI: %s\n",
acpi_format_exception(status));
goto cleanup;
}
return_buffer.pointer = acpi_gbl_db_buffer;
return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
status = acpi_get_event_resources(node, &return_buffer);
if (ACPI_FAILURE(status)) {
acpi_os_printf("AcpiGetEventResources failed: %s\n",
acpi_format_exception(status));
goto cleanup;
}
acpi_rs_dump_resource_list(ACPI_CAST_PTR
(struct acpi_resource,
acpi_gbl_db_buffer));
}
cleanup:
ACPI_FREE(parent_path);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_display_resources
*
* PARAMETERS: object_arg - String object name or object pointer.
* NULL or "*" means "display resources for
* all devices"
*
* RETURN: None
*
* DESCRIPTION: Display the resource objects associated with a device.
*
******************************************************************************/
void acpi_db_display_resources(char *object_arg)
{
struct acpi_namespace_node *node;
acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
acpi_dbg_level |= ACPI_LV_RESOURCES;
/* Asterisk means "display resources for all devices" */
if (!object_arg || (!strcmp(object_arg, "*"))) {
(void)acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
acpi_db_device_resources, NULL, NULL,
NULL);
} else {
/* Convert string to object pointer */
node = acpi_db_convert_to_node(object_arg);
if (node) {
if (node->type != ACPI_TYPE_DEVICE) {
acpi_os_printf
("%4.4s: Name is not a device object (%s)\n",
node->name.ascii,
acpi_ut_get_type_name(node->type));
} else {
(void)acpi_db_device_resources(node, 0, NULL,
NULL);
}
}
}
acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_generate_ged
*
* PARAMETERS: ged_arg - Raw GED number, ascii string
*
* RETURN: None
*
* DESCRIPTION: Simulate firing of a GED
*
******************************************************************************/
void acpi_db_generate_interrupt(char *gsiv_arg)
{
u32 gsiv_number;
struct acpi_ged_handler_info *ged_info = acpi_gbl_ged_handler_list;
if (!ged_info) {
acpi_os_printf("No GED handling present\n");
}
gsiv_number = strtoul(gsiv_arg, NULL, 0);
while (ged_info) {
if (ged_info->int_id == gsiv_number) {
struct acpi_object_list arg_list;
union acpi_object arg0;
acpi_handle evt_handle = ged_info->evt_method;
acpi_status status;
acpi_os_printf("Evaluate GED _EVT (GSIV=%d)\n",
gsiv_number);
if (!evt_handle) {
acpi_os_printf("Undefined _EVT method\n");
return;
}
arg0.integer.type = ACPI_TYPE_INTEGER;
arg0.integer.value = gsiv_number;
arg_list.count = 1;
arg_list.pointer = &arg0;
status =
acpi_evaluate_object(evt_handle, NULL, &arg_list,
NULL);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not evaluate _EVT\n");
return;
}
}
ged_info = ged_info->next;
}
}
#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************
*
* FUNCTION: acpi_db_generate_gpe
*
* PARAMETERS: gpe_arg - Raw GPE number, ascii string
* block_arg - GPE block number, ascii string
* 0 or 1 for FADT GPE blocks
*
* RETURN: None
*
* DESCRIPTION: Simulate firing of a GPE
*
******************************************************************************/
void acpi_db_generate_gpe(char *gpe_arg, char *block_arg)
{
u32 block_number = 0;
u32 gpe_number;
struct acpi_gpe_event_info *gpe_event_info;
gpe_number = strtoul(gpe_arg, NULL, 0);
/*
* If no block arg, or block arg == 0 or 1, use the FADT-defined
* GPE blocks.
*/
if (block_arg) {
block_number = strtoul(block_arg, NULL, 0);
if (block_number == 1) {
block_number = 0;
}
}
gpe_event_info =
acpi_ev_get_gpe_event_info(ACPI_TO_POINTER(block_number),
gpe_number);
if (!gpe_event_info) {
acpi_os_printf("Invalid GPE\n");
return;
}
(void)acpi_ev_gpe_dispatch(NULL, gpe_event_info, gpe_number);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_generate_sci
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Simulate an SCI -- just call the SCI dispatch.
*
******************************************************************************/
void acpi_db_generate_sci(void)
{
acpi_ev_sci_dispatch();
}
#endif /* !ACPI_REDUCED_HARDWARE */
/*******************************************************************************
*
* FUNCTION: acpi_db_trace
*
* PARAMETERS: enable_arg - ENABLE/AML to enable tracer
* DISABLE to disable tracer
* method_arg - Method to trace
* once_arg - Whether trace once
*
* RETURN: None
*
* DESCRIPTION: Control method tracing facility
*
******************************************************************************/
void acpi_db_trace(char *enable_arg, char *method_arg, char *once_arg)
{
u32 debug_level = 0;
u32 debug_layer = 0;
u32 flags = 0;
acpi_ut_strupr(enable_arg);
acpi_ut_strupr(once_arg);
if (method_arg) {
if (acpi_db_trace_method_name) {
ACPI_FREE(acpi_db_trace_method_name);
acpi_db_trace_method_name = NULL;
}
acpi_db_trace_method_name =
ACPI_ALLOCATE(strlen(method_arg) + 1);
if (!acpi_db_trace_method_name) {
acpi_os_printf("Failed to allocate method name (%s)\n",
method_arg);
return;
}
strcpy(acpi_db_trace_method_name, method_arg);
}
if (!strcmp(enable_arg, "ENABLE") ||
!strcmp(enable_arg, "METHOD") || !strcmp(enable_arg, "OPCODE")) {
if (!strcmp(enable_arg, "ENABLE")) {
/* Inherit current console settings */
debug_level = acpi_gbl_db_console_debug_level;
debug_layer = acpi_dbg_layer;
} else {
/* Restrict console output to trace points only */
debug_level = ACPI_LV_TRACE_POINT;
debug_layer = ACPI_EXECUTER;
}
flags = ACPI_TRACE_ENABLED;
if (!strcmp(enable_arg, "OPCODE")) {
flags |= ACPI_TRACE_OPCODE;
}
if (once_arg && !strcmp(once_arg, "ONCE")) {
flags |= ACPI_TRACE_ONESHOT;
}
}
(void)acpi_debug_trace(acpi_db_trace_method_name,
debug_level, debug_layer, flags);
}
| linux-master | drivers/acpi/acpica/dbcmds.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: rslist - Linked list utilities
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acresrc.h"
#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME("rslist")
/*******************************************************************************
*
* FUNCTION: acpi_rs_convert_aml_to_resources
*
* PARAMETERS: acpi_walk_aml_callback
* resource_ptr - Pointer to the buffer that will
* contain the output structures
*
* RETURN: Status
*
* DESCRIPTION: Convert an AML resource to an internal representation of the
* resource that is aligned and easier to access.
*
******************************************************************************/
acpi_status
acpi_rs_convert_aml_to_resources(u8 * aml,
u32 length,
u32 offset, u8 resource_index, void **context)
{
struct acpi_resource **resource_ptr =
ACPI_CAST_INDIRECT_PTR(struct acpi_resource, context);
struct acpi_resource *resource;
union aml_resource *aml_resource;
struct acpi_rsconvert_info *conversion_table;
acpi_status status;
ACPI_FUNCTION_TRACE(rs_convert_aml_to_resources);
/*
* Check that the input buffer and all subsequent pointers into it
* are aligned on a native word boundary. Most important on IA64
*/
resource = *resource_ptr;
if (ACPI_IS_MISALIGNED(resource)) {
ACPI_WARNING((AE_INFO,
"Misaligned resource pointer %p", resource));
}
/* Get the appropriate conversion info table */
aml_resource = ACPI_CAST_PTR(union aml_resource, aml);
if (acpi_ut_get_resource_type(aml) == ACPI_RESOURCE_NAME_SERIAL_BUS) {
/* Avoid undefined behavior: member access within misaligned address */
struct aml_resource_common_serialbus common_serial_bus;
memcpy(&common_serial_bus, aml_resource,
sizeof(common_serial_bus));
if (common_serial_bus.type > AML_RESOURCE_MAX_SERIALBUSTYPE) {
conversion_table = NULL;
} else {
/* This is an I2C, SPI, UART, or CSI2 serial_bus descriptor */
conversion_table =
acpi_gbl_convert_resource_serial_bus_dispatch
[common_serial_bus.type];
}
} else {
conversion_table =
acpi_gbl_get_resource_dispatch[resource_index];
}
if (!conversion_table) {
ACPI_ERROR((AE_INFO,
"Invalid/unsupported resource descriptor: Type 0x%2.2X",
resource_index));
return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
}
/* Convert the AML byte stream resource to a local resource struct */
status =
acpi_rs_convert_aml_to_resource(resource, aml_resource,
conversion_table);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not convert AML resource (Type 0x%X)",
*aml));
return_ACPI_STATUS(status);
}
if (!resource->length) {
ACPI_EXCEPTION((AE_INFO, status,
"Zero-length resource returned from RsConvertAmlToResource"));
}
ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
"Type %.2X, AmlLength %.2X InternalLength %.2X\n",
acpi_ut_get_resource_type(aml), length,
resource->length));
/* Point to the next structure in the output buffer */
*resource_ptr = ACPI_NEXT_RESOURCE(resource);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_convert_resources_to_aml
*
* PARAMETERS: resource - Pointer to the resource linked list
* aml_size_needed - Calculated size of the byte stream
* needed from calling acpi_rs_get_aml_length()
* The size of the output_buffer is
* guaranteed to be >= aml_size_needed
* output_buffer - Pointer to the buffer that will
* contain the byte stream
*
* RETURN: Status
*
* DESCRIPTION: Takes the resource linked list and parses it, creating a
* byte stream of resources in the caller's output buffer
*
******************************************************************************/
acpi_status
acpi_rs_convert_resources_to_aml(struct acpi_resource *resource,
acpi_size aml_size_needed, u8 * output_buffer)
{
u8 *aml = output_buffer;
u8 *end_aml = output_buffer + aml_size_needed;
struct acpi_rsconvert_info *conversion_table;
acpi_status status;
ACPI_FUNCTION_TRACE(rs_convert_resources_to_aml);
/* Walk the resource descriptor list, convert each descriptor */
while (aml < end_aml) {
/* Validate the (internal) Resource Type */
if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
ACPI_ERROR((AE_INFO,
"Invalid descriptor type (0x%X) in resource list",
resource->type));
return_ACPI_STATUS(AE_BAD_DATA);
}
/* Sanity check the length. It must not be zero, or we loop forever */
if (!resource->length) {
ACPI_ERROR((AE_INFO,
"Invalid zero length descriptor in resource list\n"));
return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
}
/* Perform the conversion */
if (resource->type == ACPI_RESOURCE_TYPE_SERIAL_BUS) {
if (resource->data.common_serial_bus.type >
AML_RESOURCE_MAX_SERIALBUSTYPE) {
conversion_table = NULL;
} else {
/* This is an I2C, SPI, UART or CSI2 serial_bus descriptor */
conversion_table =
acpi_gbl_convert_resource_serial_bus_dispatch
[resource->data.common_serial_bus.type];
}
} else {
conversion_table =
acpi_gbl_set_resource_dispatch[resource->type];
}
if (!conversion_table) {
ACPI_ERROR((AE_INFO,
"Invalid/unsupported resource descriptor: Type 0x%2.2X",
resource->type));
return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
}
status = acpi_rs_convert_resource_to_aml(resource,
ACPI_CAST_PTR(union
aml_resource,
aml),
conversion_table);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not convert resource (type 0x%X) to AML",
resource->type));
return_ACPI_STATUS(status);
}
/* Perform final sanity check on the new AML resource descriptor */
status =
acpi_ut_validate_resource(NULL,
ACPI_CAST_PTR(union aml_resource,
aml), NULL);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Check for end-of-list, normal exit */
if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) {
/* An End Tag indicates the end of the input Resource Template */
return_ACPI_STATUS(AE_OK);
}
/*
* Extract the total length of the new descriptor and set the
* Aml to point to the next (output) resource descriptor
*/
aml += acpi_ut_get_descriptor_length(aml);
/* Point to the next input resource descriptor */
resource = ACPI_NEXT_RESOURCE(resource);
}
/* Completed buffer, but did not find an end_tag resource descriptor */
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
| linux-master | drivers/acpi/acpica/rslist.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: evrgnini- ACPI address_space (op_region) init
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acevents.h"
#include "acnamesp.h"
#include "acinterp.h"
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evrgnini")
/*******************************************************************************
*
* FUNCTION: acpi_ev_system_memory_region_setup
*
* PARAMETERS: handle - Region we are interested in
* function - Start or stop
* handler_context - Address space handler context
* region_context - Region specific context
*
* RETURN: Status
*
* DESCRIPTION: Setup a system_memory operation region
*
******************************************************************************/
acpi_status
acpi_ev_system_memory_region_setup(acpi_handle handle,
u32 function,
void *handler_context, void **region_context)
{
union acpi_operand_object *region_desc =
(union acpi_operand_object *)handle;
struct acpi_mem_space_context *local_region_context;
struct acpi_mem_mapping *mm;
ACPI_FUNCTION_TRACE(ev_system_memory_region_setup);
if (function == ACPI_REGION_DEACTIVATE) {
if (*region_context) {
local_region_context =
(struct acpi_mem_space_context *)*region_context;
/* Delete memory mappings if present */
while (local_region_context->first_mm) {
mm = local_region_context->first_mm;
local_region_context->first_mm = mm->next_mm;
acpi_os_unmap_memory(mm->logical_address,
mm->length);
ACPI_FREE(mm);
}
ACPI_FREE(local_region_context);
*region_context = NULL;
}
return_ACPI_STATUS(AE_OK);
}
/* Create a new context */
local_region_context =
ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_mem_space_context));
if (!(local_region_context)) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Save the region length and address for use in the handler */
local_region_context->length = region_desc->region.length;
local_region_context->address = region_desc->region.address;
*region_context = local_region_context;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_io_space_region_setup
*
* PARAMETERS: handle - Region we are interested in
* function - Start or stop
* handler_context - Address space handler context
* region_context - Region specific context
*
* RETURN: Status
*
* DESCRIPTION: Setup a IO operation region
*
******************************************************************************/
acpi_status
acpi_ev_io_space_region_setup(acpi_handle handle,
u32 function,
void *handler_context, void **region_context)
{
ACPI_FUNCTION_TRACE(ev_io_space_region_setup);
if (function == ACPI_REGION_DEACTIVATE) {
*region_context = NULL;
} else {
*region_context = handler_context;
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_pci_config_region_setup
*
* PARAMETERS: handle - Region we are interested in
* function - Start or stop
* handler_context - Address space handler context
* region_context - Region specific context
*
* RETURN: Status
*
* DESCRIPTION: Setup a PCI_Config operation region
*
* MUTEX: Assumes namespace is not locked
*
******************************************************************************/
acpi_status
acpi_ev_pci_config_region_setup(acpi_handle handle,
u32 function,
void *handler_context, void **region_context)
{
acpi_status status = AE_OK;
u64 pci_value;
struct acpi_pci_id *pci_id = *region_context;
union acpi_operand_object *handler_obj;
struct acpi_namespace_node *parent_node;
struct acpi_namespace_node *pci_root_node;
struct acpi_namespace_node *pci_device_node;
union acpi_operand_object *region_obj =
(union acpi_operand_object *)handle;
ACPI_FUNCTION_TRACE(ev_pci_config_region_setup);
handler_obj = region_obj->region.handler;
if (!handler_obj) {
/*
* No installed handler. This shouldn't happen because the dispatch
* routine checks before we get here, but we check again just in case.
*/
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Attempting to init a region %p, with no handler\n",
region_obj));
return_ACPI_STATUS(AE_NOT_EXIST);
}
*region_context = NULL;
if (function == ACPI_REGION_DEACTIVATE) {
if (pci_id) {
ACPI_FREE(pci_id);
}
return_ACPI_STATUS(status);
}
parent_node = region_obj->region.node->parent;
/*
* Get the _SEG and _BBN values from the device upon which the handler
* is installed.
*
* We need to get the _SEG and _BBN objects relative to the PCI BUS device.
* This is the device the handler has been registered to handle.
*/
/*
* If the address_space.Node is still pointing to the root, we need
* to scan upward for a PCI Root bridge and re-associate the op_region
* handlers with that device.
*/
if (handler_obj->address_space.node == acpi_gbl_root_node) {
/* Start search from the parent object */
pci_root_node = parent_node;
while (pci_root_node != acpi_gbl_root_node) {
/* Get the _HID/_CID in order to detect a root_bridge */
if (acpi_ev_is_pci_root_bridge(pci_root_node)) {
/* Install a handler for this PCI root bridge */
status = acpi_install_address_space_handler((acpi_handle)pci_root_node, ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
if (ACPI_FAILURE(status)) {
if (status == AE_SAME_HANDLER) {
/*
* It is OK if the handler is already installed on the
* root bridge. Still need to return a context object
* for the new PCI_Config operation region, however.
*/
} else {
ACPI_EXCEPTION((AE_INFO, status,
"Could not install PciConfig handler "
"for Root Bridge %4.4s",
acpi_ut_get_node_name
(pci_root_node)));
}
}
break;
}
pci_root_node = pci_root_node->parent;
}
/* PCI root bridge not found, use namespace root node */
} else {
pci_root_node = handler_obj->address_space.node;
}
/*
* If this region is now initialized, we are done.
* (install_address_space_handler could have initialized it)
*/
if (region_obj->region.flags & AOPOBJ_SETUP_COMPLETE) {
return_ACPI_STATUS(AE_OK);
}
/* Region is still not initialized. Create a new context */
pci_id = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pci_id));
if (!pci_id) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/*
* For PCI_Config space access, we need the segment, bus, device and
* function numbers. Acquire them here.
*
* Find the parent device object. (This allows the operation region to be
* within a subscope under the device, such as a control method.)
*/
pci_device_node = region_obj->region.node;
while (pci_device_node && (pci_device_node->type != ACPI_TYPE_DEVICE)) {
pci_device_node = pci_device_node->parent;
}
if (!pci_device_node) {
ACPI_FREE(pci_id);
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/*
* Get the PCI device and function numbers from the _ADR object
* contained in the parent's scope.
*/
status = acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR,
pci_device_node, &pci_value);
/*
* The default is zero, and since the allocation above zeroed the data,
* just do nothing on failure.
*/
if (ACPI_SUCCESS(status)) {
pci_id->device = ACPI_HIWORD(ACPI_LODWORD(pci_value));
pci_id->function = ACPI_LOWORD(ACPI_LODWORD(pci_value));
}
/* The PCI segment number comes from the _SEG method */
status = acpi_ut_evaluate_numeric_object(METHOD_NAME__SEG,
pci_root_node, &pci_value);
if (ACPI_SUCCESS(status)) {
pci_id->segment = ACPI_LOWORD(pci_value);
}
/* The PCI bus number comes from the _BBN method */
status = acpi_ut_evaluate_numeric_object(METHOD_NAME__BBN,
pci_root_node, &pci_value);
if (ACPI_SUCCESS(status)) {
pci_id->bus = ACPI_LOWORD(pci_value);
}
/* Complete/update the PCI ID for this device */
status =
acpi_hw_derive_pci_id(pci_id, pci_root_node,
region_obj->region.node);
if (ACPI_FAILURE(status)) {
ACPI_FREE(pci_id);
return_ACPI_STATUS(status);
}
*region_context = pci_id;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_is_pci_root_bridge
*
* PARAMETERS: node - Device node being examined
*
* RETURN: TRUE if device is a PCI/PCI-Express Root Bridge
*
* DESCRIPTION: Determine if the input device represents a PCI Root Bridge by
* examining the _HID and _CID for the device.
*
******************************************************************************/
u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node)
{
acpi_status status;
struct acpi_pnp_device_id *hid;
struct acpi_pnp_device_id_list *cid;
u32 i;
u8 match;
/* Get the _HID and check for a PCI Root Bridge */
status = acpi_ut_execute_HID(node, &hid);
if (ACPI_FAILURE(status)) {
return (FALSE);
}
match = acpi_ut_is_pci_root_bridge(hid->string);
ACPI_FREE(hid);
if (match) {
return (TRUE);
}
/* The _HID did not match. Get the _CID and check for a PCI Root Bridge */
status = acpi_ut_execute_CID(node, &cid);
if (ACPI_FAILURE(status)) {
return (FALSE);
}
/* Check all _CIDs in the returned list */
for (i = 0; i < cid->count; i++) {
if (acpi_ut_is_pci_root_bridge(cid->ids[i].string)) {
ACPI_FREE(cid);
return (TRUE);
}
}
ACPI_FREE(cid);
return (FALSE);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_pci_bar_region_setup
*
* PARAMETERS: handle - Region we are interested in
* function - Start or stop
* handler_context - Address space handler context
* region_context - Region specific context
*
* RETURN: Status
*
* DESCRIPTION: Setup a pci_BAR operation region
*
* MUTEX: Assumes namespace is not locked
*
******************************************************************************/
acpi_status
acpi_ev_pci_bar_region_setup(acpi_handle handle,
u32 function,
void *handler_context, void **region_context)
{
ACPI_FUNCTION_TRACE(ev_pci_bar_region_setup);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_cmos_region_setup
*
* PARAMETERS: handle - Region we are interested in
* function - Start or stop
* handler_context - Address space handler context
* region_context - Region specific context
*
* RETURN: Status
*
* DESCRIPTION: Setup a CMOS operation region
*
* MUTEX: Assumes namespace is not locked
*
******************************************************************************/
acpi_status
acpi_ev_cmos_region_setup(acpi_handle handle,
u32 function,
void *handler_context, void **region_context)
{
ACPI_FUNCTION_TRACE(ev_cmos_region_setup);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_data_table_region_setup
*
* PARAMETERS: handle - Region we are interested in
* function - Start or stop
* handler_context - Address space handler context
* region_context - Region specific context
*
* RETURN: Status
*
* DESCRIPTION: Setup a data_table_region
*
* MUTEX: Assumes namespace is not locked
*
******************************************************************************/
acpi_status
acpi_ev_data_table_region_setup(acpi_handle handle,
u32 function,
void *handler_context, void **region_context)
{
union acpi_operand_object *region_desc =
(union acpi_operand_object *)handle;
struct acpi_data_table_mapping *local_region_context;
ACPI_FUNCTION_TRACE(ev_data_table_region_setup);
if (function == ACPI_REGION_DEACTIVATE) {
if (*region_context) {
ACPI_FREE(*region_context);
*region_context = NULL;
}
return_ACPI_STATUS(AE_OK);
}
/* Create a new context */
local_region_context =
ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_data_table_mapping));
if (!(local_region_context)) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Save the data table pointer for use in the handler */
local_region_context->pointer = region_desc->region.pointer;
*region_context = local_region_context;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_default_region_setup
*
* PARAMETERS: handle - Region we are interested in
* function - Start or stop
* handler_context - Address space handler context
* region_context - Region specific context
*
* RETURN: Status
*
* DESCRIPTION: Default region initialization
*
******************************************************************************/
acpi_status
acpi_ev_default_region_setup(acpi_handle handle,
u32 function,
void *handler_context, void **region_context)
{
ACPI_FUNCTION_TRACE(ev_default_region_setup);
if (function == ACPI_REGION_DEACTIVATE) {
*region_context = NULL;
} else {
*region_context = handler_context;
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_initialize_region
*
* PARAMETERS: region_obj - Region we are initializing
*
* RETURN: Status
*
* DESCRIPTION: Initializes the region, finds any _REG methods and saves them
* for execution at a later time
*
* Get the appropriate address space handler for a newly
* created region.
*
* This also performs address space specific initialization. For
* example, PCI regions must have an _ADR object that contains
* a PCI address in the scope of the definition. This address is
* required to perform an access to PCI config space.
*
* MUTEX: Interpreter should be unlocked, because we may run the _REG
* method for this region.
*
* NOTE: Possible incompliance:
* There is a behavior conflict in automatic _REG execution:
* 1. When the interpreter is evaluating a method, we can only
* automatically run _REG for the following case:
* operation_region (OPR1, 0x80, 0x1000010, 0x4)
* 2. When the interpreter is loading a table, we can also
* automatically run _REG for the following case:
* operation_region (OPR1, 0x80, 0x1000010, 0x4)
* Though this may not be compliant to the de-facto standard, the
* logic is kept in order not to trigger regressions. And keeping
* this logic should be taken care by the caller of this function.
*
******************************************************************************/
acpi_status acpi_ev_initialize_region(union acpi_operand_object *region_obj)
{
union acpi_operand_object *handler_obj;
union acpi_operand_object *obj_desc;
acpi_adr_space_type space_id;
struct acpi_namespace_node *node;
ACPI_FUNCTION_TRACE(ev_initialize_region);
if (!region_obj) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
if (region_obj->common.flags & AOPOBJ_OBJECT_INITIALIZED) {
return_ACPI_STATUS(AE_OK);
}
region_obj->common.flags |= AOPOBJ_OBJECT_INITIALIZED;
node = region_obj->region.node->parent;
space_id = region_obj->region.space_id;
/*
* The following loop depends upon the root Node having no parent
* ie: acpi_gbl_root_node->Parent being set to NULL
*/
while (node) {
/* Check to see if a handler exists */
handler_obj = NULL;
obj_desc = acpi_ns_get_attached_object(node);
if (obj_desc) {
/* Can only be a handler if the object exists */
switch (node->type) {
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
handler_obj = obj_desc->common_notify.handler;
break;
default:
/* Ignore other objects */
break;
}
handler_obj =
acpi_ev_find_region_handler(space_id, handler_obj);
if (handler_obj) {
/* Found correct handler */
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Found handler %p for region %p in obj %p\n",
handler_obj, region_obj,
obj_desc));
(void)acpi_ev_attach_region(handler_obj,
region_obj, FALSE);
/*
* Tell all users that this region is usable by
* running the _REG method
*/
acpi_ex_exit_interpreter();
(void)acpi_ev_execute_reg_method(region_obj,
ACPI_REG_CONNECT);
acpi_ex_enter_interpreter();
return_ACPI_STATUS(AE_OK);
}
}
/* This node does not have the handler we need; Pop up one level */
node = node->parent;
}
/*
* If we get here, there is no handler for this region. This is not
* fatal because many regions get created before a handler is installed
* for said region.
*/
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"No handler for RegionType %s(%X) (RegionObj %p)\n",
acpi_ut_get_region_name(space_id), space_id,
region_obj));
return_ACPI_STATUS(AE_OK);
}
| linux-master | drivers/acpi/acpica/evrgnini.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: tbxface - ACPI table-oriented external interfaces
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#define EXPORT_ACPI_INTERFACES
#include <acpi/acpi.h>
#include "accommon.h"
#include "actables.h"
#define _COMPONENT ACPI_TABLES
ACPI_MODULE_NAME("tbxface")
/*******************************************************************************
*
* FUNCTION: acpi_allocate_root_table
*
* PARAMETERS: initial_table_count - Size of initial_table_array, in number of
* struct acpi_table_desc structures
*
* RETURN: Status
*
* DESCRIPTION: Allocate a root table array. Used by iASL compiler and
* acpi_initialize_tables.
*
******************************************************************************/
acpi_status acpi_allocate_root_table(u32 initial_table_count)
{
acpi_gbl_root_table_list.max_table_count = initial_table_count;
acpi_gbl_root_table_list.flags = ACPI_ROOT_ALLOW_RESIZE;
return (acpi_tb_resize_root_table_list());
}
/*******************************************************************************
*
* FUNCTION: acpi_initialize_tables
*
* PARAMETERS: initial_table_array - Pointer to an array of pre-allocated
* struct acpi_table_desc structures. If NULL, the
* array is dynamically allocated.
* initial_table_count - Size of initial_table_array, in number of
* struct acpi_table_desc structures
* allow_resize - Flag to tell Table Manager if resize of
* pre-allocated array is allowed. Ignored
* if initial_table_array is NULL.
*
* RETURN: Status
*
* DESCRIPTION: Initialize the table manager, get the RSDP and RSDT/XSDT.
*
* NOTE: Allows static allocation of the initial table array in order
* to avoid the use of dynamic memory in confined environments
* such as the kernel boot sequence where it may not be available.
*
* If the host OS memory managers are initialized, use NULL for
* initial_table_array, and the table will be dynamically allocated.
*
******************************************************************************/
acpi_status ACPI_INIT_FUNCTION
acpi_initialize_tables(struct acpi_table_desc *initial_table_array,
u32 initial_table_count, u8 allow_resize)
{
acpi_physical_address rsdp_address;
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_initialize_tables);
/*
* Setup the Root Table Array and allocate the table array
* if requested
*/
if (!initial_table_array) {
status = acpi_allocate_root_table(initial_table_count);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
} else {
/* Root Table Array has been statically allocated by the host */
memset(initial_table_array, 0,
(acpi_size)initial_table_count *
sizeof(struct acpi_table_desc));
acpi_gbl_root_table_list.tables = initial_table_array;
acpi_gbl_root_table_list.max_table_count = initial_table_count;
acpi_gbl_root_table_list.flags = ACPI_ROOT_ORIGIN_UNKNOWN;
if (allow_resize) {
acpi_gbl_root_table_list.flags |=
ACPI_ROOT_ALLOW_RESIZE;
}
}
/* Get the address of the RSDP */
rsdp_address = acpi_os_get_root_pointer();
if (!rsdp_address) {
return_ACPI_STATUS(AE_NOT_FOUND);
}
/*
* Get the root table (RSDT or XSDT) and extract all entries to the local
* Root Table Array. This array contains the information of the RSDT/XSDT
* in a common, more usable format.
*/
status = acpi_tb_parse_root_table(rsdp_address);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_tables)
/*******************************************************************************
*
* FUNCTION: acpi_reallocate_root_table
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Reallocate Root Table List into dynamic memory. Copies the
* root list from the previously provided scratch area. Should
* be called once dynamic memory allocation is available in the
* kernel.
*
******************************************************************************/
acpi_status ACPI_INIT_FUNCTION acpi_reallocate_root_table(void)
{
acpi_status status;
struct acpi_table_desc *table_desc;
u32 i, j;
ACPI_FUNCTION_TRACE(acpi_reallocate_root_table);
/*
* If there are tables unverified, it is required to reallocate the
* root table list to clean up invalid table entries. Otherwise only
* reallocate the root table list if the host provided a static buffer
* for the table array in the call to acpi_initialize_tables().
*/
if ((acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) &&
acpi_gbl_enable_table_validation) {
return_ACPI_STATUS(AE_SUPPORT);
}
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/*
* Ensure OS early boot logic, which is required by some hosts. If the
* table state is reported to be wrong, developers should fix the
* issue by invoking acpi_put_table() for the reported table during the
* early stage.
*/
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
table_desc = &acpi_gbl_root_table_list.tables[i];
if (table_desc->pointer) {
ACPI_ERROR((AE_INFO,
"Table [%4.4s] is not invalidated during early boot stage",
table_desc->signature.ascii));
}
}
if (!acpi_gbl_enable_table_validation) {
/*
* Now it's safe to do full table validation. We can do deferred
* table initialization here once the flag is set.
*/
acpi_gbl_enable_table_validation = TRUE;
for (i = 0; i < acpi_gbl_root_table_list.current_table_count;
++i) {
table_desc = &acpi_gbl_root_table_list.tables[i];
if (!(table_desc->flags & ACPI_TABLE_IS_VERIFIED)) {
status =
acpi_tb_verify_temp_table(table_desc, NULL,
&j);
if (ACPI_FAILURE(status)) {
acpi_tb_uninstall_table(table_desc);
}
}
}
}
acpi_gbl_root_table_list.flags |= ACPI_ROOT_ALLOW_RESIZE;
status = acpi_tb_resize_root_table_list();
acpi_gbl_root_table_list.flags |= ACPI_ROOT_ORIGIN_ALLOCATED;
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL_INIT(acpi_reallocate_root_table)
/*******************************************************************************
*
* FUNCTION: acpi_get_table_header
*
* PARAMETERS: signature - ACPI signature of needed table
* instance - Which instance (for SSDTs)
* out_table_header - The pointer to the where the table header
* is returned
*
* RETURN: Status and a copy of the table header
*
* DESCRIPTION: Finds and returns an ACPI table header. Caller provides the
* memory where a copy of the header is to be returned
* (fixed length).
*
******************************************************************************/
acpi_status
acpi_get_table_header(char *signature,
u32 instance, struct acpi_table_header *out_table_header)
{
u32 i;
u32 j;
struct acpi_table_header *header;
/* Parameter validation */
if (!signature || !out_table_header) {
return (AE_BAD_PARAMETER);
}
/* Walk the root table list */
for (i = 0, j = 0; i < acpi_gbl_root_table_list.current_table_count;
i++) {
if (!ACPI_COMPARE_NAMESEG
(&(acpi_gbl_root_table_list.tables[i].signature),
signature)) {
continue;
}
if (++j < instance) {
continue;
}
if (!acpi_gbl_root_table_list.tables[i].pointer) {
if ((acpi_gbl_root_table_list.tables[i].flags &
ACPI_TABLE_ORIGIN_MASK) ==
ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL) {
header =
acpi_os_map_memory(acpi_gbl_root_table_list.
tables[i].address,
sizeof(struct
acpi_table_header));
if (!header) {
return (AE_NO_MEMORY);
}
memcpy(out_table_header, header,
sizeof(struct acpi_table_header));
acpi_os_unmap_memory(header,
sizeof(struct
acpi_table_header));
} else {
return (AE_NOT_FOUND);
}
} else {
memcpy(out_table_header,
acpi_gbl_root_table_list.tables[i].pointer,
sizeof(struct acpi_table_header));
}
return (AE_OK);
}
return (AE_NOT_FOUND);
}
ACPI_EXPORT_SYMBOL(acpi_get_table_header)
/*******************************************************************************
*
* FUNCTION: acpi_get_table
*
* PARAMETERS: signature - ACPI signature of needed table
* instance - Which instance (for SSDTs)
* out_table - Where the pointer to the table is returned
*
* RETURN: Status and pointer to the requested table
*
* DESCRIPTION: Finds and verifies an ACPI table. Table must be in the
* RSDT/XSDT.
* Note that an early stage acpi_get_table() call must be paired
* with an early stage acpi_put_table() call. otherwise the table
* pointer mapped by the early stage mapping implementation may be
* erroneously unmapped by the late stage unmapping implementation
* in an acpi_put_table() invoked during the late stage.
*
******************************************************************************/
acpi_status
acpi_get_table(char *signature,
u32 instance, struct acpi_table_header ** out_table)
{
u32 i;
u32 j;
acpi_status status = AE_NOT_FOUND;
struct acpi_table_desc *table_desc;
/* Parameter validation */
if (!signature || !out_table) {
return (AE_BAD_PARAMETER);
}
/*
* Note that the following line is required by some OSPMs, they only
* check if the returned table is NULL instead of the returned status
* to determined if this function is succeeded.
*/
*out_table = NULL;
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/* Walk the root table list */
for (i = 0, j = 0; i < acpi_gbl_root_table_list.current_table_count;
i++) {
table_desc = &acpi_gbl_root_table_list.tables[i];
if (!ACPI_COMPARE_NAMESEG(&table_desc->signature, signature)) {
continue;
}
if (++j < instance) {
continue;
}
status = acpi_tb_get_table(table_desc, out_table);
break;
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_get_table)
/*******************************************************************************
*
* FUNCTION: acpi_put_table
*
* PARAMETERS: table - The pointer to the table
*
* RETURN: None
*
* DESCRIPTION: Release a table returned by acpi_get_table() and its clones.
* Note that it is not safe if this function was invoked after an
* uninstallation happened to the original table descriptor.
* Currently there is no OSPMs' requirement to handle such
* situations.
*
******************************************************************************/
void acpi_put_table(struct acpi_table_header *table)
{
u32 i;
struct acpi_table_desc *table_desc;
ACPI_FUNCTION_TRACE(acpi_put_table);
if (!table) {
return_VOID;
}
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/* Walk the root table list */
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) {
table_desc = &acpi_gbl_root_table_list.tables[i];
if (table_desc->pointer != table) {
continue;
}
acpi_tb_put_table(table_desc);
break;
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_VOID;
}
ACPI_EXPORT_SYMBOL(acpi_put_table)
/*******************************************************************************
*
* FUNCTION: acpi_get_table_by_index
*
* PARAMETERS: table_index - Table index
* out_table - Where the pointer to the table is returned
*
* RETURN: Status and pointer to the requested table
*
* DESCRIPTION: Obtain a table by an index into the global table list. Used
* internally also.
*
******************************************************************************/
acpi_status
acpi_get_table_by_index(u32 table_index, struct acpi_table_header **out_table)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_get_table_by_index);
/* Parameter validation */
if (!out_table) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*
* Note that the following line is required by some OSPMs, they only
* check if the returned table is NULL instead of the returned status
* to determined if this function is succeeded.
*/
*out_table = NULL;
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/* Validate index */
if (table_index >= acpi_gbl_root_table_list.current_table_count) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
status =
acpi_tb_get_table(&acpi_gbl_root_table_list.tables[table_index],
out_table);
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_get_table_by_index)
/*******************************************************************************
*
* FUNCTION: acpi_install_table_handler
*
* PARAMETERS: handler - Table event handler
* context - Value passed to the handler on each event
*
* RETURN: Status
*
* DESCRIPTION: Install a global table event handler.
*
******************************************************************************/
acpi_status
acpi_install_table_handler(acpi_table_handler handler, void *context)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_install_table_handler);
if (!handler) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Don't allow more than one handler */
if (acpi_gbl_table_handler) {
status = AE_ALREADY_EXISTS;
goto cleanup;
}
/* Install the handler */
acpi_gbl_table_handler = handler;
acpi_gbl_table_handler_context = context;
cleanup:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_table_handler)
/*******************************************************************************
*
* FUNCTION: acpi_remove_table_handler
*
* PARAMETERS: handler - Table event handler that was installed
* previously.
*
* RETURN: Status
*
* DESCRIPTION: Remove a table event handler
*
******************************************************************************/
acpi_status acpi_remove_table_handler(acpi_table_handler handler)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_remove_table_handler);
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Make sure that the installed handler is the same */
if (!handler || handler != acpi_gbl_table_handler) {
status = AE_BAD_PARAMETER;
goto cleanup;
}
/* Remove the handler */
acpi_gbl_table_handler = NULL;
cleanup:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_remove_table_handler)
| linux-master | drivers/acpi/acpica/tbxface.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: utmisc - common utility procedures
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utmisc")
/*******************************************************************************
*
* FUNCTION: acpi_ut_is_pci_root_bridge
*
* PARAMETERS: id - The HID/CID in string format
*
* RETURN: TRUE if the Id is a match for a PCI/PCI-Express Root Bridge
*
* DESCRIPTION: Determine if the input ID is a PCI Root Bridge ID.
*
******************************************************************************/
u8 acpi_ut_is_pci_root_bridge(char *id)
{
/*
* Check if this is a PCI root bridge.
* ACPI 3.0+: check for a PCI Express root also.
*/
if (!(strcmp(id,
PCI_ROOT_HID_STRING)) ||
!(strcmp(id, PCI_EXPRESS_ROOT_HID_STRING))) {
return (TRUE);
}
return (FALSE);
}
#if (defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP || defined ACPI_NAMES_APP)
/*******************************************************************************
*
* FUNCTION: acpi_ut_is_aml_table
*
* PARAMETERS: table - An ACPI table
*
* RETURN: TRUE if table contains executable AML; FALSE otherwise
*
* DESCRIPTION: Check ACPI Signature for a table that contains AML code.
* Currently, these are DSDT,SSDT,PSDT. All other table types are
* data tables that do not contain AML code.
*
******************************************************************************/
u8 acpi_ut_is_aml_table(struct acpi_table_header *table)
{
/* These are the only tables that contain executable AML */
if (ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_DSDT) ||
ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_PSDT) ||
ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_SSDT) ||
ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_OSDT) ||
ACPI_IS_OEM_SIG(table->signature)) {
return (TRUE);
}
return (FALSE);
}
#endif
/*******************************************************************************
*
* FUNCTION: acpi_ut_dword_byte_swap
*
* PARAMETERS: value - Value to be converted
*
* RETURN: u32 integer with bytes swapped
*
* DESCRIPTION: Convert a 32-bit value to big-endian (swap the bytes)
*
******************************************************************************/
u32 acpi_ut_dword_byte_swap(u32 value)
{
union {
u32 value;
u8 bytes[4];
} out;
union {
u32 value;
u8 bytes[4];
} in;
ACPI_FUNCTION_ENTRY();
in.value = value;
out.bytes[0] = in.bytes[3];
out.bytes[1] = in.bytes[2];
out.bytes[2] = in.bytes[1];
out.bytes[3] = in.bytes[0];
return (out.value);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_set_integer_width
*
* PARAMETERS: Revision From DSDT header
*
* RETURN: None
*
* DESCRIPTION: Set the global integer bit width based upon the revision
* of the DSDT. For Revision 1 and 0, Integers are 32 bits.
* For Revision 2 and above, Integers are 64 bits. Yes, this
* makes a difference.
*
******************************************************************************/
void acpi_ut_set_integer_width(u8 revision)
{
if (revision < 2) {
/* 32-bit case */
acpi_gbl_integer_bit_width = 32;
acpi_gbl_integer_nybble_width = 8;
acpi_gbl_integer_byte_width = 4;
} else {
/* 64-bit case (ACPI 2.0+) */
acpi_gbl_integer_bit_width = 64;
acpi_gbl_integer_nybble_width = 16;
acpi_gbl_integer_byte_width = 8;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_create_update_state_and_push
*
* PARAMETERS: object - Object to be added to the new state
* action - Increment/Decrement
* state_list - List the state will be added to
*
* RETURN: Status
*
* DESCRIPTION: Create a new state and push it
*
******************************************************************************/
acpi_status
acpi_ut_create_update_state_and_push(union acpi_operand_object *object,
u16 action,
union acpi_generic_state **state_list)
{
union acpi_generic_state *state;
ACPI_FUNCTION_ENTRY();
/* Ignore null objects; these are expected */
if (!object) {
return (AE_OK);
}
state = acpi_ut_create_update_state(object, action);
if (!state) {
return (AE_NO_MEMORY);
}
acpi_ut_push_generic_state(state_list, state);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_walk_package_tree
*
* PARAMETERS: source_object - The package to walk
* target_object - Target object (if package is being copied)
* walk_callback - Called once for each package element
* context - Passed to the callback function
*
* RETURN: Status
*
* DESCRIPTION: Walk through a package, including subpackages
*
******************************************************************************/
acpi_status
acpi_ut_walk_package_tree(union acpi_operand_object *source_object,
void *target_object,
acpi_pkg_callback walk_callback, void *context)
{
acpi_status status = AE_OK;
union acpi_generic_state *state_list = NULL;
union acpi_generic_state *state;
union acpi_operand_object *this_source_obj;
u32 this_index;
ACPI_FUNCTION_TRACE(ut_walk_package_tree);
state = acpi_ut_create_pkg_state(source_object, target_object, 0);
if (!state) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
while (state) {
/* Get one element of the package */
this_index = state->pkg.index;
this_source_obj =
state->pkg.source_object->package.elements[this_index];
state->pkg.this_target_obj =
&state->pkg.source_object->package.elements[this_index];
/*
* Check for:
* 1) An uninitialized package element. It is completely
* legal to declare a package and leave it uninitialized
* 2) Not an internal object - can be a namespace node instead
* 3) Any type other than a package. Packages are handled in else
* case below.
*/
if ((!this_source_obj) ||
(ACPI_GET_DESCRIPTOR_TYPE(this_source_obj) !=
ACPI_DESC_TYPE_OPERAND) ||
(this_source_obj->common.type != ACPI_TYPE_PACKAGE)) {
status =
walk_callback(ACPI_COPY_TYPE_SIMPLE,
this_source_obj, state, context);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
state->pkg.index++;
while (state->pkg.index >=
state->pkg.source_object->package.count) {
/*
* We've handled all of the objects at this level, This means
* that we have just completed a package. That package may
* have contained one or more packages itself.
*
* Delete this state and pop the previous state (package).
*/
acpi_ut_delete_generic_state(state);
state = acpi_ut_pop_generic_state(&state_list);
/* Finished when there are no more states */
if (!state) {
/*
* We have handled all of the objects in the top level
* package just add the length of the package objects
* and exit
*/
return_ACPI_STATUS(AE_OK);
}
/*
* Go back up a level and move the index past the just
* completed package object.
*/
state->pkg.index++;
}
} else {
/* This is a subobject of type package */
status =
walk_callback(ACPI_COPY_TYPE_PACKAGE,
this_source_obj, state, context);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Push the current state and create a new one
* The callback above returned a new target package object.
*/
acpi_ut_push_generic_state(&state_list, state);
state =
acpi_ut_create_pkg_state(this_source_obj,
state->pkg.this_target_obj,
0);
if (!state) {
/* Free any stacked Update State objects */
while (state_list) {
state =
acpi_ut_pop_generic_state
(&state_list);
acpi_ut_delete_generic_state(state);
}
return_ACPI_STATUS(AE_NO_MEMORY);
}
}
}
/* We should never get here */
ACPI_ERROR((AE_INFO, "State list did not terminate correctly"));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
#ifdef ACPI_DEBUG_OUTPUT
/*******************************************************************************
*
* FUNCTION: acpi_ut_display_init_pathname
*
* PARAMETERS: type - Object type of the node
* obj_handle - Handle whose pathname will be displayed
* path - Additional path string to be appended.
* (NULL if no extra path)
*
* RETURN: acpi_status
*
* DESCRIPTION: Display full pathname of an object, DEBUG ONLY
*
******************************************************************************/
void
acpi_ut_display_init_pathname(u8 type,
struct acpi_namespace_node *obj_handle,
const char *path)
{
acpi_status status;
struct acpi_buffer buffer;
ACPI_FUNCTION_ENTRY();
/* Only print the path if the appropriate debug level is enabled */
if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
return;
}
/* Get the full pathname to the node */
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_ns_handle_to_pathname(obj_handle, &buffer, TRUE);
if (ACPI_FAILURE(status)) {
return;
}
/* Print what we're doing */
switch (type) {
case ACPI_TYPE_METHOD:
acpi_os_printf("Executing ");
break;
default:
acpi_os_printf("Initializing ");
break;
}
/* Print the object type and pathname */
acpi_os_printf("%-12s %s",
acpi_ut_get_type_name(type), (char *)buffer.pointer);
/* Extra path is used to append names like _STA, _INI, etc. */
if (path) {
acpi_os_printf(".%s", path);
}
acpi_os_printf("\n");
ACPI_FREE(buffer.pointer);
}
#endif
| linux-master | drivers/acpi/acpica/utmisc.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: nseval - Object evaluation, includes control method execution
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "acinterp.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nseval")
/*******************************************************************************
*
* FUNCTION: acpi_ns_evaluate
*
* PARAMETERS: info - Evaluation info block, contains these fields
* and more:
* prefix_node - Prefix or Method/Object Node to execute
* relative_path - Name of method to execute, If NULL, the
* Node is the object to execute
* parameters - List of parameters to pass to the method,
* terminated by NULL. Params itself may be
* NULL if no parameters are being passed.
* parameter_type - Type of Parameter list
* return_object - Where to put method's return value (if
* any). If NULL, no value is returned.
* flags - ACPI_IGNORE_RETURN_VALUE to delete return
*
* RETURN: Status
*
* DESCRIPTION: Execute a control method or return the current value of an
* ACPI namespace object.
*
* MUTEX: Locks interpreter
*
******************************************************************************/
acpi_status acpi_ns_evaluate(struct acpi_evaluate_info *info)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ns_evaluate);
if (!info) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
if (!info->node) {
/*
* Get the actual namespace node for the target object if we
* need to. Handles these cases:
*
* 1) Null node, valid pathname from root (absolute path)
* 2) Node and valid pathname (path relative to Node)
* 3) Node, Null pathname
*/
status =
acpi_ns_get_node(info->prefix_node, info->relative_pathname,
ACPI_NS_NO_UPSEARCH, &info->node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/*
* For a method alias, we must grab the actual method node so that
* proper scoping context will be established before execution.
*/
if (acpi_ns_get_type(info->node) == ACPI_TYPE_LOCAL_METHOD_ALIAS) {
info->node =
ACPI_CAST_PTR(struct acpi_namespace_node,
info->node->object);
}
/* Complete the info block initialization */
info->return_object = NULL;
info->node_flags = info->node->flags;
info->obj_desc = acpi_ns_get_attached_object(info->node);
ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n",
info->relative_pathname, info->node,
acpi_ns_get_attached_object(info->node)));
/* Get info if we have a predefined name (_HID, etc.) */
info->predefined =
acpi_ut_match_predefined_method(info->node->name.ascii);
/* Get the full pathname to the object, for use in warning messages */
info->full_pathname = acpi_ns_get_normalized_pathname(info->node, TRUE);
if (!info->full_pathname) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Optional object evaluation log */
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EVALUATION,
"%-26s: %s (%s)\n", " Enter evaluation",
&info->full_pathname[1],
acpi_ut_get_type_name(info->node->type)));
/* Count the number of arguments being passed in */
info->param_count = 0;
if (info->parameters) {
while (info->parameters[info->param_count]) {
info->param_count++;
}
/* Warn on impossible argument count */
if (info->param_count > ACPI_METHOD_NUM_ARGS) {
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
ACPI_WARN_ALWAYS,
"Excess arguments (%u) - using only %u",
info->param_count,
ACPI_METHOD_NUM_ARGS));
info->param_count = ACPI_METHOD_NUM_ARGS;
}
}
/*
* For predefined names: Check that the declared argument count
* matches the ACPI spec -- otherwise this is a BIOS error.
*/
acpi_ns_check_acpi_compliance(info->full_pathname, info->node,
info->predefined);
/*
* For all names: Check that the incoming argument count for
* this method/object matches the actual ASL/AML definition.
*/
acpi_ns_check_argument_count(info->full_pathname, info->node,
info->param_count, info->predefined);
/* For predefined names: Typecheck all incoming arguments */
acpi_ns_check_argument_types(info);
/*
* Three major evaluation cases:
*
* 1) Object types that cannot be evaluated by definition
* 2) The object is a control method -- execute it
* 3) The object is not a method -- just return it's current value
*/
switch (acpi_ns_get_type(info->node)) {
case ACPI_TYPE_ANY:
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_EVENT:
case ACPI_TYPE_MUTEX:
case ACPI_TYPE_REGION:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_LOCAL_SCOPE:
/*
* 1) Disallow evaluation of these object types. For these,
* object evaluation is undefined.
*/
ACPI_ERROR((AE_INFO,
"%s: This object type [%s] "
"never contains data and cannot be evaluated",
info->full_pathname,
acpi_ut_get_type_name(info->node->type)));
status = AE_TYPE;
goto cleanup;
case ACPI_TYPE_METHOD:
/*
* 2) Object is a control method - execute it
*/
/* Verify that there is a method object associated with this node */
if (!info->obj_desc) {
ACPI_ERROR((AE_INFO,
"%s: Method has no attached sub-object",
info->full_pathname));
status = AE_NULL_OBJECT;
goto cleanup;
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"**** Execute method [%s] at AML address %p length %X\n",
info->full_pathname,
info->obj_desc->method.aml_start + 1,
info->obj_desc->method.aml_length - 1));
/*
* Any namespace deletion must acquire both the namespace and
* interpreter locks to ensure that no thread is using the portion of
* the namespace that is being deleted.
*
* Execute the method via the interpreter. The interpreter is locked
* here before calling into the AML parser
*/
acpi_ex_enter_interpreter();
status = acpi_ps_execute_method(info);
acpi_ex_exit_interpreter();
break;
default:
/*
* 3) All other non-method objects -- get the current object value
*/
/*
* Some objects require additional resolution steps (e.g., the Node
* may be a field that must be read, etc.) -- we can't just grab
* the object out of the node.
*
* Use resolve_node_to_value() to get the associated value.
*
* NOTE: we can get away with passing in NULL for a walk state because
* the Node is guaranteed to not be a reference to either a method
* local or a method argument (because this interface is never called
* from a running method.)
*
* Even though we do not directly invoke the interpreter for object
* resolution, we must lock it because we could access an op_region.
* The op_region access code assumes that the interpreter is locked.
*/
acpi_ex_enter_interpreter();
/* TBD: resolve_node_to_value has a strange interface, fix */
info->return_object =
ACPI_CAST_PTR(union acpi_operand_object, info->node);
status =
acpi_ex_resolve_node_to_value(ACPI_CAST_INDIRECT_PTR
(struct acpi_namespace_node,
&info->return_object), NULL);
acpi_ex_exit_interpreter();
if (ACPI_FAILURE(status)) {
info->return_object = NULL;
goto cleanup;
}
ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "Returned object %p [%s]\n",
info->return_object,
acpi_ut_get_object_type_name(info->
return_object)));
status = AE_CTRL_RETURN_VALUE; /* Always has a "return value" */
break;
}
/*
* For predefined names, check the return value against the ACPI
* specification. Some incorrect return value types are repaired.
*/
(void)acpi_ns_check_return_value(info->node, info, info->param_count,
status, &info->return_object);
/* Check if there is a return value that must be dealt with */
if (status == AE_CTRL_RETURN_VALUE) {
/* If caller does not want the return value, delete it */
if (info->flags & ACPI_IGNORE_RETURN_VALUE) {
acpi_ut_remove_reference(info->return_object);
info->return_object = NULL;
}
/* Map AE_CTRL_RETURN_VALUE to AE_OK, we are done with it */
status = AE_OK;
} else if (ACPI_FAILURE(status)) {
/* If return_object exists, delete it */
if (info->return_object) {
acpi_ut_remove_reference(info->return_object);
info->return_object = NULL;
}
}
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"*** Completed evaluation of object %s ***\n",
info->relative_pathname));
cleanup:
/* Optional object evaluation log */
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EVALUATION,
"%-26s: %s\n", " Exit evaluation",
&info->full_pathname[1]));
/*
* Namespace was unlocked by the handling acpi_ns* function, so we
* just free the pathname and return
*/
ACPI_FREE(info->full_pathname);
info->full_pathname = NULL;
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/nseval.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: rsutils - Utilities for the resource manager
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acresrc.h"
#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME("rsutils")
/*******************************************************************************
*
* FUNCTION: acpi_rs_decode_bitmask
*
* PARAMETERS: mask - Bitmask to decode
* list - Where the converted list is returned
*
* RETURN: Count of bits set (length of list)
*
* DESCRIPTION: Convert a bit mask into a list of values
*
******************************************************************************/
u8 acpi_rs_decode_bitmask(u16 mask, u8 * list)
{
u8 i;
u8 bit_count;
ACPI_FUNCTION_ENTRY();
/* Decode the mask bits */
for (i = 0, bit_count = 0; mask; i++) {
if (mask & 0x0001) {
list[bit_count] = i;
bit_count++;
}
mask >>= 1;
}
return (bit_count);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_encode_bitmask
*
* PARAMETERS: list - List of values to encode
* count - Length of list
*
* RETURN: Encoded bitmask
*
* DESCRIPTION: Convert a list of values to an encoded bitmask
*
******************************************************************************/
u16 acpi_rs_encode_bitmask(u8 * list, u8 count)
{
u32 i;
u16 mask;
ACPI_FUNCTION_ENTRY();
/* Encode the list into a single bitmask */
for (i = 0, mask = 0; i < count; i++) {
mask |= (0x1 << list[i]);
}
return (mask);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_move_data
*
* PARAMETERS: destination - Pointer to the destination descriptor
* source - Pointer to the source descriptor
* item_count - How many items to move
* move_type - Byte width
*
* RETURN: None
*
* DESCRIPTION: Move multiple data items from one descriptor to another. Handles
* alignment issues and endian issues if necessary, as configured
* via the ACPI_MOVE_* macros. (This is why a memcpy is not used)
*
******************************************************************************/
void
acpi_rs_move_data(void *destination, void *source, u16 item_count, u8 move_type)
{
u32 i;
ACPI_FUNCTION_ENTRY();
/* One move per item */
for (i = 0; i < item_count; i++) {
switch (move_type) {
/*
* For the 8-bit case, we can perform the move all at once
* since there are no alignment or endian issues
*/
case ACPI_RSC_MOVE8:
case ACPI_RSC_MOVE_GPIO_RES:
case ACPI_RSC_MOVE_SERIAL_VEN:
case ACPI_RSC_MOVE_SERIAL_RES:
memcpy(destination, source, item_count);
return;
/*
* 16-, 32-, and 64-bit cases must use the move macros that perform
* endian conversion and/or accommodate hardware that cannot perform
* misaligned memory transfers
*/
case ACPI_RSC_MOVE16:
case ACPI_RSC_MOVE_GPIO_PIN:
ACPI_MOVE_16_TO_16(&ACPI_CAST_PTR(u16, destination)[i],
&ACPI_CAST_PTR(u16, source)[i]);
break;
case ACPI_RSC_MOVE32:
ACPI_MOVE_32_TO_32(&ACPI_CAST_PTR(u32, destination)[i],
&ACPI_CAST_PTR(u32, source)[i]);
break;
case ACPI_RSC_MOVE64:
ACPI_MOVE_64_TO_64(&ACPI_CAST_PTR(u64, destination)[i],
&ACPI_CAST_PTR(u64, source)[i]);
break;
default:
return;
}
}
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_set_resource_length
*
* PARAMETERS: total_length - Length of the AML descriptor, including
* the header and length fields.
* aml - Pointer to the raw AML descriptor
*
* RETURN: None
*
* DESCRIPTION: Set the resource_length field of an AML
* resource descriptor, both Large and Small descriptors are
* supported automatically. Note: Descriptor Type field must
* be valid.
*
******************************************************************************/
void
acpi_rs_set_resource_length(acpi_rsdesc_size total_length,
union aml_resource *aml)
{
acpi_rs_length resource_length;
ACPI_FUNCTION_ENTRY();
/* Length is the total descriptor length minus the header length */
resource_length = (acpi_rs_length)
(total_length - acpi_ut_get_resource_header_length(aml));
/* Length is stored differently for large and small descriptors */
if (aml->small_header.descriptor_type & ACPI_RESOURCE_NAME_LARGE) {
/* Large descriptor -- bytes 1-2 contain the 16-bit length */
ACPI_MOVE_16_TO_16(&aml->large_header.resource_length,
&resource_length);
} else {
/*
* Small descriptor -- bits 2:0 of byte 0 contain the length
* Clear any existing length, preserving descriptor type bits
*/
aml->small_header.descriptor_type = (u8)
((aml->small_header.descriptor_type &
~ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK)
| resource_length);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_set_resource_header
*
* PARAMETERS: descriptor_type - Byte to be inserted as the type
* total_length - Length of the AML descriptor, including
* the header and length fields.
* aml - Pointer to the raw AML descriptor
*
* RETURN: None
*
* DESCRIPTION: Set the descriptor_type and resource_length fields of an AML
* resource descriptor, both Large and Small descriptors are
* supported automatically
*
******************************************************************************/
void
acpi_rs_set_resource_header(u8 descriptor_type,
acpi_rsdesc_size total_length,
union aml_resource *aml)
{
ACPI_FUNCTION_ENTRY();
/* Set the Resource Type */
aml->small_header.descriptor_type = descriptor_type;
/* Set the Resource Length */
acpi_rs_set_resource_length(total_length, aml);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_strcpy
*
* PARAMETERS: destination - Pointer to the destination string
* source - Pointer to the source string
*
* RETURN: String length, including NULL terminator
*
* DESCRIPTION: Local string copy that returns the string length, saving a
* strcpy followed by a strlen.
*
******************************************************************************/
static u16 acpi_rs_strcpy(char *destination, char *source)
{
u16 i;
ACPI_FUNCTION_ENTRY();
for (i = 0; source[i]; i++) {
destination[i] = source[i];
}
destination[i] = 0;
/* Return string length including the NULL terminator */
return ((u16) (i + 1));
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_resource_source
*
* PARAMETERS: resource_length - Length field of the descriptor
* minimum_length - Minimum length of the descriptor (minus
* any optional fields)
* resource_source - Where the resource_source is returned
* aml - Pointer to the raw AML descriptor
* string_ptr - (optional) where to store the actual
* resource_source string
*
* RETURN: Length of the string plus NULL terminator, rounded up to native
* word boundary
*
* DESCRIPTION: Copy the optional resource_source data from a raw AML descriptor
* to an internal resource descriptor
*
******************************************************************************/
acpi_rs_length
acpi_rs_get_resource_source(acpi_rs_length resource_length,
acpi_rs_length minimum_length,
struct acpi_resource_source * resource_source,
union aml_resource * aml, char *string_ptr)
{
acpi_rsdesc_size total_length;
u8 *aml_resource_source;
ACPI_FUNCTION_ENTRY();
total_length =
resource_length + sizeof(struct aml_resource_large_header);
aml_resource_source = ACPI_ADD_PTR(u8, aml, minimum_length);
/*
* resource_source is present if the length of the descriptor is longer
* than the minimum length.
*
* Note: Some resource descriptors will have an additional null, so
* we add 1 to the minimum length.
*/
if (total_length > (acpi_rsdesc_size)(minimum_length + 1)) {
/* Get the resource_source_index */
resource_source->index = aml_resource_source[0];
resource_source->string_ptr = string_ptr;
if (!string_ptr) {
/*
* String destination pointer is not specified; Set the String
* pointer to the end of the current resource_source structure.
*/
resource_source->string_ptr =
ACPI_ADD_PTR(char, resource_source,
sizeof(struct acpi_resource_source));
}
/*
* In order for the Resource length to be a multiple of the native
* word, calculate the length of the string (+1 for NULL terminator)
* and expand to the next word multiple.
*
* Zero the entire area of the buffer.
*/
total_length =
(u32)strlen(ACPI_CAST_PTR(char, &aml_resource_source[1])) +
1;
total_length = (u32)ACPI_ROUND_UP_TO_NATIVE_WORD(total_length);
memset(resource_source->string_ptr, 0, total_length);
/* Copy the resource_source string to the destination */
resource_source->string_length =
acpi_rs_strcpy(resource_source->string_ptr,
ACPI_CAST_PTR(char,
&aml_resource_source[1]));
return ((acpi_rs_length)total_length);
}
/* resource_source is not present */
resource_source->index = 0;
resource_source->string_length = 0;
resource_source->string_ptr = NULL;
return (0);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_set_resource_source
*
* PARAMETERS: aml - Pointer to the raw AML descriptor
* minimum_length - Minimum length of the descriptor (minus
* any optional fields)
* resource_source - Internal resource_source
*
* RETURN: Total length of the AML descriptor
*
* DESCRIPTION: Convert an optional resource_source from internal format to a
* raw AML resource descriptor
*
******************************************************************************/
acpi_rsdesc_size
acpi_rs_set_resource_source(union aml_resource *aml,
acpi_rs_length minimum_length,
struct acpi_resource_source *resource_source)
{
u8 *aml_resource_source;
acpi_rsdesc_size descriptor_length;
ACPI_FUNCTION_ENTRY();
descriptor_length = minimum_length;
/* Non-zero string length indicates presence of a resource_source */
if (resource_source->string_length) {
/* Point to the end of the AML descriptor */
aml_resource_source = ACPI_ADD_PTR(u8, aml, minimum_length);
/* Copy the resource_source_index */
aml_resource_source[0] = (u8) resource_source->index;
/* Copy the resource_source string */
strcpy(ACPI_CAST_PTR(char, &aml_resource_source[1]),
resource_source->string_ptr);
/*
* Add the length of the string (+ 1 for null terminator) to the
* final descriptor length
*/
descriptor_length += ((acpi_rsdesc_size)
resource_source->string_length + 1);
}
/* Return the new total length of the AML descriptor */
return (descriptor_length);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_prt_method_data
*
* PARAMETERS: node - Device node
* ret_buffer - Pointer to a buffer structure for the
* results
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the _PRT value of an object
* contained in an object specified by the handle passed in
*
* If the function fails an appropriate status will be returned
* and the contents of the callers buffer is undefined.
*
******************************************************************************/
acpi_status
acpi_rs_get_prt_method_data(struct acpi_namespace_node *node,
struct acpi_buffer *ret_buffer)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE(rs_get_prt_method_data);
/* Parameters guaranteed valid by caller */
/* Execute the method, no parameters */
status =
acpi_ut_evaluate_object(node, METHOD_NAME__PRT, ACPI_BTYPE_PACKAGE,
&obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Create a resource linked list from the byte stream buffer that comes
* back from the _CRS method execution.
*/
status = acpi_rs_create_pci_routing_table(obj_desc, ret_buffer);
/* On exit, we must delete the object returned by evaluate_object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_crs_method_data
*
* PARAMETERS: node - Device node
* ret_buffer - Pointer to a buffer structure for the
* results
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the _CRS value of an object
* contained in an object specified by the handle passed in
*
* If the function fails an appropriate status will be returned
* and the contents of the callers buffer is undefined.
*
******************************************************************************/
acpi_status
acpi_rs_get_crs_method_data(struct acpi_namespace_node *node,
struct acpi_buffer *ret_buffer)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE(rs_get_crs_method_data);
/* Parameters guaranteed valid by caller */
/* Execute the method, no parameters */
status =
acpi_ut_evaluate_object(node, METHOD_NAME__CRS, ACPI_BTYPE_BUFFER,
&obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Make the call to create a resource linked list from the
* byte stream buffer that comes back from the _CRS method
* execution.
*/
status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
/* On exit, we must delete the object returned by evaluateObject */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_prs_method_data
*
* PARAMETERS: node - Device node
* ret_buffer - Pointer to a buffer structure for the
* results
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the _PRS value of an object
* contained in an object specified by the handle passed in
*
* If the function fails an appropriate status will be returned
* and the contents of the callers buffer is undefined.
*
******************************************************************************/
acpi_status
acpi_rs_get_prs_method_data(struct acpi_namespace_node *node,
struct acpi_buffer *ret_buffer)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE(rs_get_prs_method_data);
/* Parameters guaranteed valid by caller */
/* Execute the method, no parameters */
status =
acpi_ut_evaluate_object(node, METHOD_NAME__PRS, ACPI_BTYPE_BUFFER,
&obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Make the call to create a resource linked list from the
* byte stream buffer that comes back from the _CRS method
* execution.
*/
status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
/* On exit, we must delete the object returned by evaluateObject */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_aei_method_data
*
* PARAMETERS: node - Device node
* ret_buffer - Pointer to a buffer structure for the
* results
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the _AEI value of an object
* contained in an object specified by the handle passed in
*
* If the function fails an appropriate status will be returned
* and the contents of the callers buffer is undefined.
*
******************************************************************************/
acpi_status
acpi_rs_get_aei_method_data(struct acpi_namespace_node *node,
struct acpi_buffer *ret_buffer)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE(rs_get_aei_method_data);
/* Parameters guaranteed valid by caller */
/* Execute the method, no parameters */
status =
acpi_ut_evaluate_object(node, METHOD_NAME__AEI, ACPI_BTYPE_BUFFER,
&obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Make the call to create a resource linked list from the
* byte stream buffer that comes back from the _CRS method
* execution.
*/
status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
/* On exit, we must delete the object returned by evaluateObject */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_get_method_data
*
* PARAMETERS: handle - Handle to the containing object
* path - Path to method, relative to Handle
* ret_buffer - Pointer to a buffer structure for the
* results
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get the _CRS or _PRS value of an
* object contained in an object specified by the handle passed in
*
* If the function fails an appropriate status will be returned
* and the contents of the callers buffer is undefined.
*
******************************************************************************/
acpi_status
acpi_rs_get_method_data(acpi_handle handle,
const char *path, struct acpi_buffer *ret_buffer)
{
union acpi_operand_object *obj_desc;
acpi_status status;
ACPI_FUNCTION_TRACE(rs_get_method_data);
/* Parameters guaranteed valid by caller */
/* Execute the method, no parameters */
status =
acpi_ut_evaluate_object(ACPI_CAST_PTR
(struct acpi_namespace_node, handle), path,
ACPI_BTYPE_BUFFER, &obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Make the call to create a resource linked list from the
* byte stream buffer that comes back from the method
* execution.
*/
status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
/* On exit, we must delete the object returned by evaluate_object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_set_srs_method_data
*
* PARAMETERS: node - Device node
* in_buffer - Pointer to a buffer structure of the
* parameter
*
* RETURN: Status
*
* DESCRIPTION: This function is called to set the _SRS of an object contained
* in an object specified by the handle passed in
*
* If the function fails an appropriate status will be returned
* and the contents of the callers buffer is undefined.
*
* Note: Parameters guaranteed valid by caller
*
******************************************************************************/
acpi_status
acpi_rs_set_srs_method_data(struct acpi_namespace_node *node,
struct acpi_buffer *in_buffer)
{
struct acpi_evaluate_info *info;
union acpi_operand_object *args[2];
acpi_status status;
struct acpi_buffer buffer;
ACPI_FUNCTION_TRACE(rs_set_srs_method_data);
/* Allocate and initialize the evaluation information block */
info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
if (!info) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
info->prefix_node = node;
info->relative_pathname = METHOD_NAME__SRS;
info->parameters = args;
info->flags = ACPI_IGNORE_RETURN_VALUE;
/*
* The in_buffer parameter will point to a linked list of
* resource parameters. It needs to be formatted into a
* byte stream to be sent in as an input parameter to _SRS
*
* Convert the linked list into a byte stream
*/
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_rs_create_aml_resources(in_buffer, &buffer);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
/* Create and initialize the method parameter object */
args[0] = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER);
if (!args[0]) {
/*
* Must free the buffer allocated above (otherwise it is freed
* later)
*/
ACPI_FREE(buffer.pointer);
status = AE_NO_MEMORY;
goto cleanup;
}
args[0]->buffer.length = (u32) buffer.length;
args[0]->buffer.pointer = buffer.pointer;
args[0]->common.flags = AOPOBJ_DATA_VALID;
args[1] = NULL;
/* Execute the method, no return value is expected */
status = acpi_ns_evaluate(info);
/* Clean up and return the status from acpi_ns_evaluate */
acpi_ut_remove_reference(args[0]);
cleanup:
ACPI_FREE(info);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/rsutils.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: utxfmutex - external AML mutex access functions
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utxfmutex")
/* Local prototypes */
static acpi_status
acpi_ut_get_mutex_object(acpi_handle handle,
acpi_string pathname,
union acpi_operand_object **ret_obj);
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_mutex_object
*
* PARAMETERS: handle - Mutex or prefix handle (optional)
* pathname - Mutex pathname (optional)
* ret_obj - Where the mutex object is returned
*
* RETURN: Status
*
* DESCRIPTION: Get an AML mutex object. The mutex node is pointed to by
* Handle:Pathname. Either Handle or Pathname can be NULL, but
* not both.
*
******************************************************************************/
static acpi_status
acpi_ut_get_mutex_object(acpi_handle handle,
acpi_string pathname,
union acpi_operand_object **ret_obj)
{
struct acpi_namespace_node *mutex_node;
union acpi_operand_object *mutex_obj;
acpi_status status;
/* Parameter validation */
if (!ret_obj || (!handle && !pathname)) {
return (AE_BAD_PARAMETER);
}
/* Get a the namespace node for the mutex */
mutex_node = handle;
if (pathname != NULL) {
status =
acpi_get_handle(handle, pathname,
ACPI_CAST_PTR(acpi_handle, &mutex_node));
if (ACPI_FAILURE(status)) {
return (status);
}
}
/* Ensure that we actually have a Mutex object */
if (!mutex_node || (mutex_node->type != ACPI_TYPE_MUTEX)) {
return (AE_TYPE);
}
/* Get the low-level mutex object */
mutex_obj = acpi_ns_get_attached_object(mutex_node);
if (!mutex_obj) {
return (AE_NULL_OBJECT);
}
*ret_obj = mutex_obj;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_acquire_mutex
*
* PARAMETERS: handle - Mutex or prefix handle (optional)
* pathname - Mutex pathname (optional)
* timeout - Max time to wait for the lock (millisec)
*
* RETURN: Status
*
* DESCRIPTION: Acquire an AML mutex. This is a device driver interface to
* AML mutex objects, and allows for transaction locking between
* drivers and AML code. The mutex node is pointed to by
* Handle:Pathname. Either Handle or Pathname can be NULL, but
* not both.
*
******************************************************************************/
acpi_status
acpi_acquire_mutex(acpi_handle handle, acpi_string pathname, u16 timeout)
{
acpi_status status;
union acpi_operand_object *mutex_obj;
/* Get the low-level mutex associated with Handle:Pathname */
status = acpi_ut_get_mutex_object(handle, pathname, &mutex_obj);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Acquire the OS mutex */
status = acpi_os_acquire_mutex(mutex_obj->mutex.os_mutex, timeout);
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_acquire_mutex)
/*******************************************************************************
*
* FUNCTION: acpi_release_mutex
*
* PARAMETERS: handle - Mutex or prefix handle (optional)
* pathname - Mutex pathname (optional)
*
* RETURN: Status
*
* DESCRIPTION: Release an AML mutex. This is a device driver interface to
* AML mutex objects, and allows for transaction locking between
* drivers and AML code. The mutex node is pointed to by
* Handle:Pathname. Either Handle or Pathname can be NULL, but
* not both.
*
******************************************************************************/
acpi_status acpi_release_mutex(acpi_handle handle, acpi_string pathname)
{
acpi_status status;
union acpi_operand_object *mutex_obj;
/* Get the low-level mutex associated with Handle:Pathname */
status = acpi_ut_get_mutex_object(handle, pathname, &mutex_obj);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Release the OS mutex */
acpi_os_release_mutex(mutex_obj->mutex.os_mutex);
return (AE_OK);
}
ACPI_EXPORT_SYMBOL(acpi_release_mutex)
| linux-master | drivers/acpi/acpica/utxfmutex.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: exoparg3 - AML execution - opcodes with 3 arguments
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"
#include "acparser.h"
#include "amlcode.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("exoparg3")
/*!
* Naming convention for AML interpreter execution routines.
*
* The routines that begin execution of AML opcodes are named with a common
* convention based upon the number of arguments, the number of target operands,
* and whether or not a value is returned:
*
* AcpiExOpcode_xA_yT_zR
*
* Where:
*
* xA - ARGUMENTS: The number of arguments (input operands) that are
* required for this opcode type (1 through 6 args).
* yT - TARGETS: The number of targets (output operands) that are required
* for this opcode type (0, 1, or 2 targets).
* zR - RETURN VALUE: Indicates whether this opcode type returns a value
* as the function return (0 or 1).
*
* The AcpiExOpcode* functions are called via the Dispatcher component with
* fully resolved operands.
!*/
/*******************************************************************************
*
* FUNCTION: acpi_ex_opcode_3A_0T_0R
*
* PARAMETERS: walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Execute Triadic operator (3 operands)
*
******************************************************************************/
acpi_status acpi_ex_opcode_3A_0T_0R(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
struct acpi_signal_fatal_info *fatal;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE_STR(ex_opcode_3A_0T_0R,
acpi_ps_get_opcode_name(walk_state->opcode));
switch (walk_state->opcode) {
case AML_FATAL_OP: /* Fatal (fatal_type fatal_code fatal_arg) */
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"FatalOp: Type %X Code %X Arg %X "
"<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n",
(u32)operand[0]->integer.value,
(u32)operand[1]->integer.value,
(u32)operand[2]->integer.value));
fatal = ACPI_ALLOCATE(sizeof(struct acpi_signal_fatal_info));
if (fatal) {
fatal->type = (u32) operand[0]->integer.value;
fatal->code = (u32) operand[1]->integer.value;
fatal->argument = (u32) operand[2]->integer.value;
}
/* Always signal the OS! */
status = acpi_os_signal(ACPI_SIGNAL_FATAL, fatal);
/* Might return while OS is shutting down, just continue */
ACPI_FREE(fatal);
goto cleanup;
case AML_EXTERNAL_OP:
/*
* If the interpreter sees this opcode, just ignore it. The External
* op is intended for use by disassemblers in order to properly
* disassemble control method invocations. The opcode or group of
* opcodes should be surrounded by an "if (0)" clause to ensure that
* AML interpreters never see the opcode. Thus, something is
* wrong if an external opcode ever gets here.
*/
ACPI_ERROR((AE_INFO, "Executed External Op"));
status = AE_OK;
goto cleanup;
default:
ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
cleanup:
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_opcode_3A_1T_1R
*
* PARAMETERS: walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Execute Triadic operator (3 operands)
*
******************************************************************************/
acpi_status acpi_ex_opcode_3A_1T_1R(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *return_desc = NULL;
char *buffer = NULL;
acpi_status status = AE_OK;
u64 index;
acpi_size length;
ACPI_FUNCTION_TRACE_STR(ex_opcode_3A_1T_1R,
acpi_ps_get_opcode_name(walk_state->opcode));
switch (walk_state->opcode) {
case AML_MID_OP: /* Mid (Source[0], Index[1], Length[2], Result[3]) */
/*
* Create the return object. The Source operand is guaranteed to be
* either a String or a Buffer, so just use its type.
*/
return_desc = acpi_ut_create_internal_object((operand[0])->
common.type);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Get the Integer values from the objects */
index = operand[1]->integer.value;
length = (acpi_size)operand[2]->integer.value;
/*
* If the index is beyond the length of the String/Buffer, or if the
* requested length is zero, return a zero-length String/Buffer
*/
if (index >= operand[0]->string.length) {
length = 0;
}
/* Truncate request if larger than the actual String/Buffer */
else if ((index + length) > operand[0]->string.length) {
length =
(acpi_size)operand[0]->string.length -
(acpi_size)index;
}
/* Strings always have a sub-pointer, not so for buffers */
switch ((operand[0])->common.type) {
case ACPI_TYPE_STRING:
/* Always allocate a new buffer for the String */
buffer = ACPI_ALLOCATE_ZEROED((acpi_size)length + 1);
if (!buffer) {
status = AE_NO_MEMORY;
goto cleanup;
}
break;
case ACPI_TYPE_BUFFER:
/* If the requested length is zero, don't allocate a buffer */
if (length > 0) {
/* Allocate a new buffer for the Buffer */
buffer = ACPI_ALLOCATE_ZEROED(length);
if (!buffer) {
status = AE_NO_MEMORY;
goto cleanup;
}
}
break;
default: /* Should not happen */
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
if (buffer) {
/* We have a buffer, copy the portion requested */
memcpy(buffer,
operand[0]->string.pointer + index, length);
}
/* Set the length of the new String/Buffer */
return_desc->string.pointer = buffer;
return_desc->string.length = (u32) length;
/* Mark buffer initialized */
return_desc->buffer.flags |= AOPOBJ_DATA_VALID;
break;
default:
ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
/* Store the result in the target */
status = acpi_ex_store(return_desc, operand[3], walk_state);
cleanup:
/* Delete return object on error */
if (ACPI_FAILURE(status) || walk_state->result_obj) {
acpi_ut_remove_reference(return_desc);
walk_state->result_obj = NULL;
} else {
/* Set the return object and exit */
walk_state->result_obj = return_desc;
}
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/exoparg3.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: dbhistry - debugger HISTORY command
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdebug.h"
#define _COMPONENT ACPI_CA_DEBUGGER
ACPI_MODULE_NAME("dbhistry")
#define HI_NO_HISTORY 0
#define HI_RECORD_HISTORY 1
#define HISTORY_SIZE 40
typedef struct history_info {
char *command;
u32 cmd_num;
} HISTORY_INFO;
static HISTORY_INFO acpi_gbl_history_buffer[HISTORY_SIZE];
static u16 acpi_gbl_lo_history = 0;
static u16 acpi_gbl_num_history = 0;
static u16 acpi_gbl_next_history_index = 0;
/*******************************************************************************
*
* FUNCTION: acpi_db_add_to_history
*
* PARAMETERS: command_line - Command to add
*
* RETURN: None
*
* DESCRIPTION: Add a command line to the history buffer.
*
******************************************************************************/
void acpi_db_add_to_history(char *command_line)
{
u16 cmd_len;
u16 buffer_len;
/* Put command into the next available slot */
cmd_len = (u16)strlen(command_line);
if (!cmd_len) {
return;
}
if (acpi_gbl_history_buffer[acpi_gbl_next_history_index].command !=
NULL) {
buffer_len =
(u16)
strlen(acpi_gbl_history_buffer[acpi_gbl_next_history_index].
command);
if (cmd_len > buffer_len) {
acpi_os_free(acpi_gbl_history_buffer
[acpi_gbl_next_history_index].command);
acpi_gbl_history_buffer[acpi_gbl_next_history_index].
command = acpi_os_allocate(cmd_len + 1);
}
} else {
acpi_gbl_history_buffer[acpi_gbl_next_history_index].command =
acpi_os_allocate(cmd_len + 1);
}
strcpy(acpi_gbl_history_buffer[acpi_gbl_next_history_index].command,
command_line);
acpi_gbl_history_buffer[acpi_gbl_next_history_index].cmd_num =
acpi_gbl_next_cmd_num;
/* Adjust indexes */
if ((acpi_gbl_num_history == HISTORY_SIZE) &&
(acpi_gbl_next_history_index == acpi_gbl_lo_history)) {
acpi_gbl_lo_history++;
if (acpi_gbl_lo_history >= HISTORY_SIZE) {
acpi_gbl_lo_history = 0;
}
}
acpi_gbl_next_history_index++;
if (acpi_gbl_next_history_index >= HISTORY_SIZE) {
acpi_gbl_next_history_index = 0;
}
acpi_gbl_next_cmd_num++;
if (acpi_gbl_num_history < HISTORY_SIZE) {
acpi_gbl_num_history++;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_display_history
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Display the contents of the history buffer
*
******************************************************************************/
void acpi_db_display_history(void)
{
u32 i;
u16 history_index;
history_index = acpi_gbl_lo_history;
/* Dump entire history buffer */
for (i = 0; i < acpi_gbl_num_history; i++) {
if (acpi_gbl_history_buffer[history_index].command) {
acpi_os_printf("%3u %s\n",
acpi_gbl_history_buffer[history_index].
cmd_num,
acpi_gbl_history_buffer[history_index].
command);
}
history_index++;
if (history_index >= HISTORY_SIZE) {
history_index = 0;
}
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_get_from_history
*
* PARAMETERS: command_num_arg - String containing the number of the
* command to be retrieved
*
* RETURN: Pointer to the retrieved command. Null on error.
*
* DESCRIPTION: Get a command from the history buffer
*
******************************************************************************/
char *acpi_db_get_from_history(char *command_num_arg)
{
u32 cmd_num;
if (command_num_arg == NULL) {
cmd_num = acpi_gbl_next_cmd_num - 1;
}
else {
cmd_num = strtoul(command_num_arg, NULL, 0);
}
return (acpi_db_get_history_by_index(cmd_num));
}
/*******************************************************************************
*
* FUNCTION: acpi_db_get_history_by_index
*
* PARAMETERS: cmd_num - Index of the desired history entry.
* Values are 0...(acpi_gbl_next_cmd_num - 1)
*
* RETURN: Pointer to the retrieved command. Null on error.
*
* DESCRIPTION: Get a command from the history buffer
*
******************************************************************************/
char *acpi_db_get_history_by_index(u32 cmd_num)
{
u32 i;
u16 history_index;
/* Search history buffer */
history_index = acpi_gbl_lo_history;
for (i = 0; i < acpi_gbl_num_history; i++) {
if (acpi_gbl_history_buffer[history_index].cmd_num == cmd_num) {
/* Found the command, return it */
return (acpi_gbl_history_buffer[history_index].command);
}
/* History buffer is circular */
history_index++;
if (history_index >= HISTORY_SIZE) {
history_index = 0;
}
}
acpi_os_printf("Invalid history number: %u\n", history_index);
return (NULL);
}
| linux-master | drivers/acpi/acpica/dbhistry.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: nssearch - Namespace search
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#ifdef ACPI_ASL_COMPILER
#include "amlcode.h"
#endif
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nssearch")
/* Local prototypes */
static acpi_status
acpi_ns_search_parent_tree(u32 target_name,
struct acpi_namespace_node *node,
acpi_object_type type,
struct acpi_namespace_node **return_node);
/*******************************************************************************
*
* FUNCTION: acpi_ns_search_one_scope
*
* PARAMETERS: target_name - Ascii ACPI name to search for
* parent_node - Starting node where search will begin
* type - Object type to match
* return_node - Where the matched Named obj is returned
*
* RETURN: Status
*
* DESCRIPTION: Search a single level of the namespace. Performs a
* simple search of the specified level, and does not add
* entries or search parents.
*
*
* Named object lists are built (and subsequently dumped) in the
* order in which the names are encountered during the namespace load;
*
* All namespace searching is linear in this implementation, but
* could be easily modified to support any improved search
* algorithm. However, the linear search was chosen for simplicity
* and because the trees are small and the other interpreter
* execution overhead is relatively high.
*
* Note: CPU execution analysis has shown that the AML interpreter spends
* a very small percentage of its time searching the namespace. Therefore,
* the linear search seems to be sufficient, as there would seem to be
* little value in improving the search.
*
******************************************************************************/
acpi_status
acpi_ns_search_one_scope(u32 target_name,
struct acpi_namespace_node *parent_node,
acpi_object_type type,
struct acpi_namespace_node **return_node)
{
struct acpi_namespace_node *node;
ACPI_FUNCTION_TRACE(ns_search_one_scope);
#ifdef ACPI_DEBUG_OUTPUT
if (ACPI_LV_NAMES & acpi_dbg_level) {
char *scope_name;
scope_name = acpi_ns_get_normalized_pathname(parent_node, TRUE);
if (scope_name) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Searching %s (%p) For [%4.4s] (%s)\n",
scope_name, parent_node,
ACPI_CAST_PTR(char, &target_name),
acpi_ut_get_type_name(type)));
ACPI_FREE(scope_name);
}
}
#endif
/*
* Search for name at this namespace level, which is to say that we
* must search for the name among the children of this object
*/
node = parent_node->child;
while (node) {
/* Check for match against the name */
if (node->name.integer == target_name) {
/* Resolve a control method alias if any */
if (acpi_ns_get_type(node) ==
ACPI_TYPE_LOCAL_METHOD_ALIAS) {
node =
ACPI_CAST_PTR(struct acpi_namespace_node,
node->object);
}
/* Found matching entry */
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Name [%4.4s] (%s) %p found in scope [%4.4s] %p\n",
ACPI_CAST_PTR(char, &target_name),
acpi_ut_get_type_name(node->type),
node,
acpi_ut_get_node_name(parent_node),
parent_node));
*return_node = node;
return_ACPI_STATUS(AE_OK);
}
/* Didn't match name, move on to the next peer object */
node = node->peer;
}
/* Searched entire namespace level, not found */
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Name [%4.4s] (%s) not found in search in scope [%4.4s] "
"%p first child %p\n",
ACPI_CAST_PTR(char, &target_name),
acpi_ut_get_type_name(type),
acpi_ut_get_node_name(parent_node), parent_node,
parent_node->child));
return_ACPI_STATUS(AE_NOT_FOUND);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_search_parent_tree
*
* PARAMETERS: target_name - Ascii ACPI name to search for
* node - Starting node where search will begin
* type - Object type to match
* return_node - Where the matched Node is returned
*
* RETURN: Status
*
* DESCRIPTION: Called when a name has not been found in the current namespace
* level. Before adding it or giving up, ACPI scope rules require
* searching enclosing scopes in cases identified by acpi_ns_local().
*
* "A name is located by finding the matching name in the current
* name space, and then in the parent name space. If the parent
* name space does not contain the name, the search continues
* recursively until either the name is found or the name space
* does not have a parent (the root of the name space). This
* indicates that the name is not found" (From ACPI Specification,
* section 5.3)
*
******************************************************************************/
static acpi_status
acpi_ns_search_parent_tree(u32 target_name,
struct acpi_namespace_node *node,
acpi_object_type type,
struct acpi_namespace_node **return_node)
{
acpi_status status;
struct acpi_namespace_node *parent_node;
ACPI_FUNCTION_TRACE(ns_search_parent_tree);
parent_node = node->parent;
/*
* If there is no parent (i.e., we are at the root) or type is "local",
* we won't be searching the parent tree.
*/
if (!parent_node) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "[%4.4s] has no parent\n",
ACPI_CAST_PTR(char, &target_name)));
return_ACPI_STATUS(AE_NOT_FOUND);
}
if (acpi_ns_local(type)) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"[%4.4s] type [%s] must be local to this scope (no parent search)\n",
ACPI_CAST_PTR(char, &target_name),
acpi_ut_get_type_name(type)));
return_ACPI_STATUS(AE_NOT_FOUND);
}
/* Search the parent tree */
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Searching parent [%4.4s] for [%4.4s]\n",
acpi_ut_get_node_name(parent_node),
ACPI_CAST_PTR(char, &target_name)));
/* Search parents until target is found or we have backed up to the root */
while (parent_node) {
/*
* Search parent scope. Use TYPE_ANY because we don't care about the
* object type at this point, we only care about the existence of
* the actual name we are searching for. Typechecking comes later.
*/
status =
acpi_ns_search_one_scope(target_name, parent_node,
ACPI_TYPE_ANY, return_node);
if (ACPI_SUCCESS(status)) {
return_ACPI_STATUS(status);
}
/* Not found here, go up another level (until we reach the root) */
parent_node = parent_node->parent;
}
/* Not found in parent tree */
return_ACPI_STATUS(AE_NOT_FOUND);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_search_and_enter
*
* PARAMETERS: target_name - Ascii ACPI name to search for (4 chars)
* walk_state - Current state of the walk
* node - Starting node where search will begin
* interpreter_mode - Add names only in ACPI_MODE_LOAD_PASS_x.
* Otherwise,search only.
* type - Object type to match
* flags - Flags describing the search restrictions
* return_node - Where the Node is returned
*
* RETURN: Status
*
* DESCRIPTION: Search for a name segment in a single namespace level,
* optionally adding it if it is not found. If the passed
* Type is not Any and the type previously stored in the
* entry was Any (i.e. unknown), update the stored type.
*
* In ACPI_IMODE_EXECUTE, search only.
* In other modes, search and add if not found.
*
******************************************************************************/
acpi_status
acpi_ns_search_and_enter(u32 target_name,
struct acpi_walk_state *walk_state,
struct acpi_namespace_node *node,
acpi_interpreter_mode interpreter_mode,
acpi_object_type type,
u32 flags, struct acpi_namespace_node **return_node)
{
acpi_status status;
struct acpi_namespace_node *new_node;
ACPI_FUNCTION_TRACE(ns_search_and_enter);
/* Parameter validation */
if (!node || !target_name || !return_node) {
ACPI_ERROR((AE_INFO,
"Null parameter: Node %p Name 0x%X ReturnNode %p",
node, target_name, return_node));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*
* Name must consist of valid ACPI characters. We will repair the name if
* necessary because we don't want to abort because of this, but we want
* all namespace names to be printable. A warning message is appropriate.
*
* This issue came up because there are in fact machines that exhibit
* this problem, and we want to be able to enable ACPI support for them,
* even though there are a few bad names.
*/
acpi_ut_repair_name(ACPI_CAST_PTR(char, &target_name));
/* Try to find the name in the namespace level specified by the caller */
*return_node = ACPI_ENTRY_NOT_FOUND;
status = acpi_ns_search_one_scope(target_name, node, type, return_node);
if (status != AE_NOT_FOUND) {
/*
* If we found it AND the request specifies that a find is an error,
* return the error
*/
if (status == AE_OK) {
/* The node was found in the namespace */
/*
* If the namespace override feature is enabled for this node,
* delete any existing attached sub-object and make the node
* look like a new node that is owned by the override table.
*/
if (flags & ACPI_NS_OVERRIDE_IF_FOUND) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Namespace override: %4.4s pass %u type %X Owner %X\n",
ACPI_CAST_PTR(char,
&target_name),
interpreter_mode,
(*return_node)->type,
walk_state->owner_id));
acpi_ns_delete_children(*return_node);
if (acpi_gbl_runtime_namespace_override) {
acpi_ut_remove_reference((*return_node)->object);
(*return_node)->object = NULL;
(*return_node)->owner_id =
walk_state->owner_id;
} else {
acpi_ns_remove_node(*return_node);
*return_node = ACPI_ENTRY_NOT_FOUND;
}
}
/* Return an error if we don't expect to find the object */
else if (flags & ACPI_NS_ERROR_IF_FOUND) {
status = AE_ALREADY_EXISTS;
}
}
#ifdef ACPI_ASL_COMPILER
if (*return_node && (*return_node)->type == ACPI_TYPE_ANY) {
(*return_node)->flags |= ANOBJ_IS_EXTERNAL;
}
#endif
/* Either found it or there was an error: finished either way */
return_ACPI_STATUS(status);
}
/*
* The name was not found. If we are NOT performing the first pass
* (name entry) of loading the namespace, search the parent tree (all the
* way to the root if necessary.) We don't want to perform the parent
* search when the namespace is actually being loaded. We want to perform
* the search when namespace references are being resolved (load pass 2)
* and during the execution phase.
*/
if ((interpreter_mode != ACPI_IMODE_LOAD_PASS1) &&
(flags & ACPI_NS_SEARCH_PARENT)) {
/*
* Not found at this level - search parent tree according to the
* ACPI specification
*/
status =
acpi_ns_search_parent_tree(target_name, node, type,
return_node);
if (ACPI_SUCCESS(status)) {
return_ACPI_STATUS(status);
}
}
/* In execute mode, just search, never add names. Exit now */
if (interpreter_mode == ACPI_IMODE_EXECUTE) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"%4.4s Not found in %p [Not adding]\n",
ACPI_CAST_PTR(char, &target_name), node));
return_ACPI_STATUS(AE_NOT_FOUND);
}
/* Create the new named object */
new_node = acpi_ns_create_node(target_name);
if (!new_node) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
#ifdef ACPI_ASL_COMPILER
/* Node is an object defined by an External() statement */
if (flags & ACPI_NS_EXTERNAL ||
(walk_state && walk_state->opcode == AML_SCOPE_OP)) {
new_node->flags |= ANOBJ_IS_EXTERNAL;
}
#endif
if (flags & ACPI_NS_TEMPORARY) {
new_node->flags |= ANOBJ_TEMPORARY;
}
/* Install the new object into the parent's list of children */
acpi_ns_install_node(walk_state, node, new_node, type);
*return_node = new_node;
return_ACPI_STATUS(AE_OK);
}
| linux-master | drivers/acpi/acpica/nssearch.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: utcache - local cache allocation routines
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utcache")
#ifdef ACPI_USE_LOCAL_CACHE
/*******************************************************************************
*
* FUNCTION: acpi_os_create_cache
*
* PARAMETERS: cache_name - Ascii name for the cache
* object_size - Size of each cached object
* max_depth - Maximum depth of the cache (in objects)
* return_cache - Where the new cache object is returned
*
* RETURN: Status
*
* DESCRIPTION: Create a cache object
*
******************************************************************************/
acpi_status
acpi_os_create_cache(char *cache_name,
u16 object_size,
u16 max_depth, struct acpi_memory_list **return_cache)
{
struct acpi_memory_list *cache;
ACPI_FUNCTION_ENTRY();
if (!cache_name || !return_cache || !object_size) {
return (AE_BAD_PARAMETER);
}
/* Create the cache object */
cache = acpi_os_allocate(sizeof(struct acpi_memory_list));
if (!cache) {
return (AE_NO_MEMORY);
}
/* Populate the cache object and return it */
memset(cache, 0, sizeof(struct acpi_memory_list));
cache->list_name = cache_name;
cache->object_size = object_size;
cache->max_depth = max_depth;
*return_cache = cache;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_os_purge_cache
*
* PARAMETERS: cache - Handle to cache object
*
* RETURN: Status
*
* DESCRIPTION: Free all objects within the requested cache.
*
******************************************************************************/
acpi_status acpi_os_purge_cache(struct acpi_memory_list *cache)
{
void *next;
acpi_status status;
ACPI_FUNCTION_ENTRY();
if (!cache) {
return (AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Walk the list of objects in this cache */
while (cache->list_head) {
/* Delete and unlink one cached state object */
next = ACPI_GET_DESCRIPTOR_PTR(cache->list_head);
ACPI_FREE(cache->list_head);
cache->list_head = next;
cache->current_depth--;
}
(void)acpi_ut_release_mutex(ACPI_MTX_CACHES);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_os_delete_cache
*
* PARAMETERS: cache - Handle to cache object
*
* RETURN: Status
*
* DESCRIPTION: Free all objects within the requested cache and delete the
* cache object.
*
******************************************************************************/
acpi_status acpi_os_delete_cache(struct acpi_memory_list *cache)
{
acpi_status status;
ACPI_FUNCTION_ENTRY();
/* Purge all objects in the cache */
status = acpi_os_purge_cache(cache);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Now we can delete the cache object */
acpi_os_free(cache);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_os_release_object
*
* PARAMETERS: cache - Handle to cache object
* object - The object to be released
*
* RETURN: None
*
* DESCRIPTION: Release an object to the specified cache. If cache is full,
* the object is deleted.
*
******************************************************************************/
acpi_status acpi_os_release_object(struct acpi_memory_list *cache, void *object)
{
acpi_status status;
ACPI_FUNCTION_ENTRY();
if (!cache || !object) {
return (AE_BAD_PARAMETER);
}
/* If cache is full, just free this object */
if (cache->current_depth >= cache->max_depth) {
ACPI_FREE(object);
ACPI_MEM_TRACKING(cache->total_freed++);
}
/* Otherwise put this object back into the cache */
else {
status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Mark the object as cached */
memset(object, 0xCA, cache->object_size);
ACPI_SET_DESCRIPTOR_TYPE(object, ACPI_DESC_TYPE_CACHED);
/* Put the object at the head of the cache list */
ACPI_SET_DESCRIPTOR_PTR(object, cache->list_head);
cache->list_head = object;
cache->current_depth++;
(void)acpi_ut_release_mutex(ACPI_MTX_CACHES);
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_os_acquire_object
*
* PARAMETERS: cache - Handle to cache object
*
* RETURN: the acquired object. NULL on error
*
* DESCRIPTION: Get an object from the specified cache. If cache is empty,
* the object is allocated.
*
******************************************************************************/
void *acpi_os_acquire_object(struct acpi_memory_list *cache)
{
acpi_status status;
void *object;
ACPI_FUNCTION_TRACE(os_acquire_object);
if (!cache) {
return_PTR(NULL);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
if (ACPI_FAILURE(status)) {
return_PTR(NULL);
}
ACPI_MEM_TRACKING(cache->requests++);
/* Check the cache first */
if (cache->list_head) {
/* There is an object available, use it */
object = cache->list_head;
cache->list_head = ACPI_GET_DESCRIPTOR_PTR(object);
cache->current_depth--;
ACPI_MEM_TRACKING(cache->hits++);
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC,
"%s: Object %p from %s cache\n",
ACPI_GET_FUNCTION_NAME, object,
cache->list_name));
status = acpi_ut_release_mutex(ACPI_MTX_CACHES);
if (ACPI_FAILURE(status)) {
return_PTR(NULL);
}
/* Clear (zero) the previously used Object */
memset(object, 0, cache->object_size);
} else {
/* The cache is empty, create a new object */
ACPI_MEM_TRACKING(cache->total_allocated++);
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
if ((cache->total_allocated - cache->total_freed) >
cache->max_occupied) {
cache->max_occupied =
cache->total_allocated - cache->total_freed;
}
#endif
/* Avoid deadlock with ACPI_ALLOCATE_ZEROED */
status = acpi_ut_release_mutex(ACPI_MTX_CACHES);
if (ACPI_FAILURE(status)) {
return_PTR(NULL);
}
object = ACPI_ALLOCATE_ZEROED(cache->object_size);
if (!object) {
return_PTR(NULL);
}
}
return_PTR(object);
}
#endif /* ACPI_USE_LOCAL_CACHE */
| linux-master | drivers/acpi/acpica/utcache.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: utxface - External interfaces, miscellaneous utility functions
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#define EXPORT_ACPI_INTERFACES
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdebug.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utxface")
/*******************************************************************************
*
* FUNCTION: acpi_terminate
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Shutdown the ACPICA subsystem and release all resources.
*
******************************************************************************/
acpi_status ACPI_INIT_FUNCTION acpi_terminate(void)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_terminate);
/* Shutdown and free all resources */
acpi_ut_subsystem_shutdown();
/* Free the mutex objects */
acpi_ut_mutex_terminate();
/* Now we can shutdown the OS-dependent layer */
status = acpi_os_terminate();
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL_INIT(acpi_terminate)
#ifndef ACPI_ASL_COMPILER
#ifdef ACPI_FUTURE_USAGE
/*******************************************************************************
*
* FUNCTION: acpi_subsystem_status
*
* PARAMETERS: None
*
* RETURN: Status of the ACPI subsystem
*
* DESCRIPTION: Other drivers that use the ACPI subsystem should call this
* before making any other calls, to ensure the subsystem
* initialized successfully.
*
******************************************************************************/
acpi_status acpi_subsystem_status(void)
{
if (acpi_gbl_startup_flags & ACPI_INITIALIZED_OK) {
return (AE_OK);
} else {
return (AE_ERROR);
}
}
ACPI_EXPORT_SYMBOL(acpi_subsystem_status)
/*******************************************************************************
*
* FUNCTION: acpi_get_system_info
*
* PARAMETERS: out_buffer - A buffer to receive the resources for the
* device
*
* RETURN: status - the status of the call
*
* DESCRIPTION: This function is called to get information about the current
* state of the ACPI subsystem. It will return system information
* in the out_buffer.
*
* If the function fails an appropriate status will be returned
* and the value of out_buffer is undefined.
*
******************************************************************************/
acpi_status acpi_get_system_info(struct acpi_buffer *out_buffer)
{
struct acpi_system_info *info_ptr;
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_get_system_info);
/* Parameter validation */
status = acpi_ut_validate_buffer(out_buffer);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Validate/Allocate/Clear caller buffer */
status =
acpi_ut_initialize_buffer(out_buffer,
sizeof(struct acpi_system_info));
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Populate the return buffer
*/
info_ptr = (struct acpi_system_info *)out_buffer->pointer;
info_ptr->acpi_ca_version = ACPI_CA_VERSION;
/* System flags (ACPI capabilities) */
info_ptr->flags = ACPI_SYS_MODE_ACPI;
/* Timer resolution - 24 or 32 bits */
if (acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER) {
info_ptr->timer_resolution = 24;
} else {
info_ptr->timer_resolution = 32;
}
/* Clear the reserved fields */
info_ptr->reserved1 = 0;
info_ptr->reserved2 = 0;
/* Current debug levels */
info_ptr->debug_layer = acpi_dbg_layer;
info_ptr->debug_level = acpi_dbg_level;
return_ACPI_STATUS(AE_OK);
}
ACPI_EXPORT_SYMBOL(acpi_get_system_info)
/*******************************************************************************
*
* FUNCTION: acpi_get_statistics
*
* PARAMETERS: stats - Where the statistics are returned
*
* RETURN: status - the status of the call
*
* DESCRIPTION: Get the contents of the various system counters
*
******************************************************************************/
acpi_status acpi_get_statistics(struct acpi_statistics *stats)
{
ACPI_FUNCTION_TRACE(acpi_get_statistics);
/* Parameter validation */
if (!stats) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Various interrupt-based event counters */
stats->sci_count = acpi_sci_count;
stats->gpe_count = acpi_gpe_count;
memcpy(stats->fixed_event_count, acpi_fixed_event_count,
sizeof(acpi_fixed_event_count));
/* Other counters */
stats->method_count = acpi_method_count;
return_ACPI_STATUS(AE_OK);
}
ACPI_EXPORT_SYMBOL(acpi_get_statistics)
/*****************************************************************************
*
* FUNCTION: acpi_install_initialization_handler
*
* PARAMETERS: handler - Callback procedure
* function - Not (currently) used, see below
*
* RETURN: Status
*
* DESCRIPTION: Install an initialization handler
*
* TBD: When a second function is added, must save the Function also.
*
****************************************************************************/
acpi_status
acpi_install_initialization_handler(acpi_init_handler handler, u32 function)
{
if (!handler) {
return (AE_BAD_PARAMETER);
}
if (acpi_gbl_init_handler) {
return (AE_ALREADY_EXISTS);
}
acpi_gbl_init_handler = handler;
return (AE_OK);
}
ACPI_EXPORT_SYMBOL(acpi_install_initialization_handler)
#endif
/*****************************************************************************
*
* FUNCTION: acpi_purge_cached_objects
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Empty all caches (delete the cached objects)
*
****************************************************************************/
acpi_status acpi_purge_cached_objects(void)
{
ACPI_FUNCTION_TRACE(acpi_purge_cached_objects);
(void)acpi_os_purge_cache(acpi_gbl_state_cache);
(void)acpi_os_purge_cache(acpi_gbl_operand_cache);
(void)acpi_os_purge_cache(acpi_gbl_ps_node_cache);
(void)acpi_os_purge_cache(acpi_gbl_ps_node_ext_cache);
return_ACPI_STATUS(AE_OK);
}
ACPI_EXPORT_SYMBOL(acpi_purge_cached_objects)
/*****************************************************************************
*
* FUNCTION: acpi_install_interface
*
* PARAMETERS: interface_name - The interface to install
*
* RETURN: Status
*
* DESCRIPTION: Install an _OSI interface to the global list
*
****************************************************************************/
acpi_status acpi_install_interface(acpi_string interface_name)
{
acpi_status status;
struct acpi_interface_info *interface_info;
/* Parameter validation */
if (!interface_name || (strlen(interface_name) == 0)) {
return (AE_BAD_PARAMETER);
}
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Check if the interface name is already in the global list */
interface_info = acpi_ut_get_interface(interface_name);
if (interface_info) {
/*
* The interface already exists in the list. This is OK if the
* interface has been marked invalid -- just clear the bit.
*/
if (interface_info->flags & ACPI_OSI_INVALID) {
interface_info->flags &= ~ACPI_OSI_INVALID;
status = AE_OK;
} else {
status = AE_ALREADY_EXISTS;
}
} else {
/* New interface name, install into the global list */
status = acpi_ut_install_interface(interface_name);
}
acpi_os_release_mutex(acpi_gbl_osi_mutex);
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_install_interface)
/*****************************************************************************
*
* FUNCTION: acpi_remove_interface
*
* PARAMETERS: interface_name - The interface to remove
*
* RETURN: Status
*
* DESCRIPTION: Remove an _OSI interface from the global list
*
****************************************************************************/
acpi_status acpi_remove_interface(acpi_string interface_name)
{
acpi_status status;
/* Parameter validation */
if (!interface_name || (strlen(interface_name) == 0)) {
return (AE_BAD_PARAMETER);
}
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return (status);
}
status = acpi_ut_remove_interface(interface_name);
acpi_os_release_mutex(acpi_gbl_osi_mutex);
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_remove_interface)
/*****************************************************************************
*
* FUNCTION: acpi_install_interface_handler
*
* PARAMETERS: handler - The _OSI interface handler to install
* NULL means "remove existing handler"
*
* RETURN: Status
*
* DESCRIPTION: Install a handler for the predefined _OSI ACPI method.
* invoked during execution of the internal implementation of
* _OSI. A NULL handler simply removes any existing handler.
*
****************************************************************************/
acpi_status acpi_install_interface_handler(acpi_interface_handler handler)
{
acpi_status status;
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return (status);
}
if (handler && acpi_gbl_interface_handler) {
status = AE_ALREADY_EXISTS;
} else {
acpi_gbl_interface_handler = handler;
}
acpi_os_release_mutex(acpi_gbl_osi_mutex);
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_install_interface_handler)
/*****************************************************************************
*
* FUNCTION: acpi_update_interfaces
*
* PARAMETERS: action - Actions to be performed during the
* update
*
* RETURN: Status
*
* DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor
* string or/and feature group strings.
*
****************************************************************************/
acpi_status acpi_update_interfaces(u8 action)
{
acpi_status status;
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return (status);
}
status = acpi_ut_update_interfaces(action);
acpi_os_release_mutex(acpi_gbl_osi_mutex);
return (status);
}
/*****************************************************************************
*
* FUNCTION: acpi_check_address_range
*
* PARAMETERS: space_id - Address space ID
* address - Start address
* length - Length
* warn - TRUE if warning on overlap desired
*
* RETURN: Count of the number of conflicts detected.
*
* DESCRIPTION: Check if the input address range overlaps any of the
* ASL operation region address ranges.
*
****************************************************************************/
u32
acpi_check_address_range(acpi_adr_space_type space_id,
acpi_physical_address address,
acpi_size length, u8 warn)
{
u32 overlaps;
acpi_status status;
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return (0);
}
overlaps = acpi_ut_check_address_range(space_id, address,
(u32)length, warn);
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (overlaps);
}
ACPI_EXPORT_SYMBOL(acpi_check_address_range)
#endif /* !ACPI_ASL_COMPILER */
/*******************************************************************************
*
* FUNCTION: acpi_decode_pld_buffer
*
* PARAMETERS: in_buffer - Buffer returned by _PLD method
* length - Length of the in_buffer
* return_buffer - Where the decode buffer is returned
*
* RETURN: Status and the decoded _PLD buffer. User must deallocate
* the buffer via ACPI_FREE.
*
* DESCRIPTION: Decode the bit-packed buffer returned by the _PLD method into
* a local struct that is much more useful to an ACPI driver.
*
******************************************************************************/
acpi_status
acpi_decode_pld_buffer(u8 *in_buffer,
acpi_size length, struct acpi_pld_info **return_buffer)
{
struct acpi_pld_info *pld_info;
u32 *buffer = ACPI_CAST_PTR(u32, in_buffer);
u32 dword;
/* Parameter validation */
if (!in_buffer || !return_buffer
|| (length < ACPI_PLD_REV1_BUFFER_SIZE)) {
return (AE_BAD_PARAMETER);
}
pld_info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pld_info));
if (!pld_info) {
return (AE_NO_MEMORY);
}
/* First 32-bit DWord */
ACPI_MOVE_32_TO_32(&dword, &buffer[0]);
pld_info->revision = ACPI_PLD_GET_REVISION(&dword);
pld_info->ignore_color = ACPI_PLD_GET_IGNORE_COLOR(&dword);
pld_info->red = ACPI_PLD_GET_RED(&dword);
pld_info->green = ACPI_PLD_GET_GREEN(&dword);
pld_info->blue = ACPI_PLD_GET_BLUE(&dword);
/* Second 32-bit DWord */
ACPI_MOVE_32_TO_32(&dword, &buffer[1]);
pld_info->width = ACPI_PLD_GET_WIDTH(&dword);
pld_info->height = ACPI_PLD_GET_HEIGHT(&dword);
/* Third 32-bit DWord */
ACPI_MOVE_32_TO_32(&dword, &buffer[2]);
pld_info->user_visible = ACPI_PLD_GET_USER_VISIBLE(&dword);
pld_info->dock = ACPI_PLD_GET_DOCK(&dword);
pld_info->lid = ACPI_PLD_GET_LID(&dword);
pld_info->panel = ACPI_PLD_GET_PANEL(&dword);
pld_info->vertical_position = ACPI_PLD_GET_VERTICAL(&dword);
pld_info->horizontal_position = ACPI_PLD_GET_HORIZONTAL(&dword);
pld_info->shape = ACPI_PLD_GET_SHAPE(&dword);
pld_info->group_orientation = ACPI_PLD_GET_ORIENTATION(&dword);
pld_info->group_token = ACPI_PLD_GET_TOKEN(&dword);
pld_info->group_position = ACPI_PLD_GET_POSITION(&dword);
pld_info->bay = ACPI_PLD_GET_BAY(&dword);
/* Fourth 32-bit DWord */
ACPI_MOVE_32_TO_32(&dword, &buffer[3]);
pld_info->ejectable = ACPI_PLD_GET_EJECTABLE(&dword);
pld_info->ospm_eject_required = ACPI_PLD_GET_OSPM_EJECT(&dword);
pld_info->cabinet_number = ACPI_PLD_GET_CABINET(&dword);
pld_info->card_cage_number = ACPI_PLD_GET_CARD_CAGE(&dword);
pld_info->reference = ACPI_PLD_GET_REFERENCE(&dword);
pld_info->rotation = ACPI_PLD_GET_ROTATION(&dword);
pld_info->order = ACPI_PLD_GET_ORDER(&dword);
if (length >= ACPI_PLD_REV2_BUFFER_SIZE) {
/* Fifth 32-bit DWord (Revision 2 of _PLD) */
ACPI_MOVE_32_TO_32(&dword, &buffer[4]);
pld_info->vertical_offset = ACPI_PLD_GET_VERT_OFFSET(&dword);
pld_info->horizontal_offset = ACPI_PLD_GET_HORIZ_OFFSET(&dword);
}
*return_buffer = pld_info;
return (AE_OK);
}
ACPI_EXPORT_SYMBOL(acpi_decode_pld_buffer)
| linux-master | drivers/acpi/acpica/utxface.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: dswload - Dispatcher first pass namespace load callbacks
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "amlcode.h"
#include "acdispat.h"
#include "acinterp.h"
#include "acnamesp.h"
#ifdef ACPI_ASL_COMPILER
#include "acdisasm.h"
#endif
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dswload")
/*******************************************************************************
*
* FUNCTION: acpi_ds_init_callbacks
*
* PARAMETERS: walk_state - Current state of the parse tree walk
* pass_number - 1, 2, or 3
*
* RETURN: Status
*
* DESCRIPTION: Init walk state callbacks
*
******************************************************************************/
acpi_status
acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number)
{
switch (pass_number) {
case 0:
/* Parse only - caller will setup callbacks */
walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
ACPI_PARSE_DELETE_TREE | ACPI_PARSE_DISASSEMBLE;
walk_state->descending_callback = NULL;
walk_state->ascending_callback = NULL;
break;
case 1:
/* Load pass 1 */
walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
ACPI_PARSE_DELETE_TREE;
walk_state->descending_callback = acpi_ds_load1_begin_op;
walk_state->ascending_callback = acpi_ds_load1_end_op;
break;
case 2:
/* Load pass 2 */
walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
ACPI_PARSE_DELETE_TREE;
walk_state->descending_callback = acpi_ds_load2_begin_op;
walk_state->ascending_callback = acpi_ds_load2_end_op;
break;
case 3:
/* Execution pass */
walk_state->parse_flags |= ACPI_PARSE_EXECUTE |
ACPI_PARSE_DELETE_TREE;
walk_state->descending_callback = acpi_ds_exec_begin_op;
walk_state->ascending_callback = acpi_ds_exec_end_op;
break;
default:
return (AE_BAD_PARAMETER);
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_load1_begin_op
*
* PARAMETERS: walk_state - Current state of the parse tree walk
* out_op - Where to return op if a new one is created
*
* RETURN: Status
*
* DESCRIPTION: Descending callback used during the loading of ACPI tables.
*
******************************************************************************/
acpi_status
acpi_ds_load1_begin_op(struct acpi_walk_state *walk_state,
union acpi_parse_object **out_op)
{
union acpi_parse_object *op;
struct acpi_namespace_node *node;
acpi_status status;
acpi_object_type object_type;
char *path;
u32 flags;
ACPI_FUNCTION_TRACE_PTR(ds_load1_begin_op, walk_state->op);
op = walk_state->op;
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
walk_state));
/* We are only interested in opcodes that have an associated name */
if (op) {
if (!(walk_state->op_info->flags & AML_NAMED)) {
*out_op = op;
return_ACPI_STATUS(AE_OK);
}
/* Check if this object has already been installed in the namespace */
if (op->common.node) {
*out_op = op;
return_ACPI_STATUS(AE_OK);
}
}
path = acpi_ps_get_next_namestring(&walk_state->parser_state);
/* Map the raw opcode into an internal object type */
object_type = walk_state->op_info->object_type;
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"State=%p Op=%p [%s]\n", walk_state, op,
acpi_ut_get_type_name(object_type)));
switch (walk_state->opcode) {
case AML_SCOPE_OP:
/*
* The target name of the Scope() operator must exist at this point so
* that we can actually open the scope to enter new names underneath it.
* Allow search-to-root for single namesegs.
*/
status =
acpi_ns_lookup(walk_state->scope_info, path, object_type,
ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
walk_state, &(node));
#ifdef ACPI_ASL_COMPILER
if (status == AE_NOT_FOUND) {
/*
* Table disassembly:
* Target of Scope() not found. Generate an External for it, and
* insert the name into the namespace.
*/
acpi_dm_add_op_to_external_list(op, path,
ACPI_TYPE_DEVICE, 0, 0);
status =
acpi_ns_lookup(walk_state->scope_info, path,
object_type, ACPI_IMODE_LOAD_PASS1,
ACPI_NS_SEARCH_PARENT, walk_state,
&node);
}
#endif
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->scope_info, path,
status);
return_ACPI_STATUS(status);
}
/*
* Check to make sure that the target is
* one of the opcodes that actually opens a scope
*/
switch (node->type) {
case ACPI_TYPE_ANY:
case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_POWER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
/* These are acceptable types */
break;
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/*
* These types we will allow, but we will change the type.
* This enables some existing code of the form:
*
* Name (DEB, 0)
* Scope (DEB) { ... }
*
* Note: silently change the type here. On the second pass,
* we will report a warning
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Type override - [%4.4s] had invalid type (%s) "
"for Scope operator, changed to type ANY\n",
acpi_ut_get_node_name(node),
acpi_ut_get_type_name(node->type)));
node->type = ACPI_TYPE_ANY;
walk_state->scope_info->common.value = ACPI_TYPE_ANY;
break;
case ACPI_TYPE_METHOD:
/*
* Allow scope change to root during execution of module-level
* code. Root is typed METHOD during this time.
*/
if ((node == acpi_gbl_root_node) &&
(walk_state->
parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
break;
}
ACPI_FALLTHROUGH;
default:
/* All other types are an error */
ACPI_ERROR((AE_INFO,
"Invalid type (%s) for target of "
"Scope operator [%4.4s] (Cannot override)",
acpi_ut_get_type_name(node->type),
acpi_ut_get_node_name(node)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
break;
default:
/*
* For all other named opcodes, we will enter the name into
* the namespace.
*
* Setup the search flags.
* Since we are entering a name into the namespace, we do not want to
* enable the search-to-root upsearch.
*
* There are only two conditions where it is acceptable that the name
* already exists:
* 1) the Scope() operator can reopen a scoping object that was
* previously defined (Scope, Method, Device, etc.)
* 2) Whenever we are parsing a deferred opcode (op_region, Buffer,
* buffer_field, or Package), the name of the object is already
* in the namespace.
*/
if (walk_state->deferred_node) {
/* This name is already in the namespace, get the node */
node = walk_state->deferred_node;
status = AE_OK;
break;
}
/*
* If we are executing a method, do not create any namespace objects
* during the load phase, only during execution.
*/
if (walk_state->method_node) {
node = NULL;
status = AE_OK;
break;
}
flags = ACPI_NS_NO_UPSEARCH;
if ((walk_state->opcode != AML_SCOPE_OP) &&
(!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) {
if (walk_state->namespace_override) {
flags |= ACPI_NS_OVERRIDE_IF_FOUND;
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"[%s] Override allowed\n",
acpi_ut_get_type_name
(object_type)));
} else {
flags |= ACPI_NS_ERROR_IF_FOUND;
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"[%s] Cannot already exist\n",
acpi_ut_get_type_name
(object_type)));
}
} else {
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"[%s] Both Find or Create allowed\n",
acpi_ut_get_type_name(object_type)));
}
/*
* Enter the named type into the internal namespace. We enter the name
* as we go downward in the parse tree. Any necessary subobjects that
* involve arguments to the opcode must be created as we go back up the
* parse tree later.
*/
status =
acpi_ns_lookup(walk_state->scope_info, path, object_type,
ACPI_IMODE_LOAD_PASS1, flags, walk_state,
&node);
if (ACPI_FAILURE(status)) {
if (status == AE_ALREADY_EXISTS) {
/* The name already exists in this scope */
if (node->flags & ANOBJ_IS_EXTERNAL) {
/*
* Allow one create on an object or segment that was
* previously declared External
*/
node->flags &= ~ANOBJ_IS_EXTERNAL;
node->type = (u8) object_type;
/* Just retyped a node, probably will need to open a scope */
if (acpi_ns_opens_scope(object_type)) {
status =
acpi_ds_scope_stack_push
(node, object_type,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS
(status);
}
}
status = AE_OK;
}
}
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
path, status);
return_ACPI_STATUS(status);
}
}
break;
}
/* Common exit */
if (!op) {
/* Create a new op */
op = acpi_ps_alloc_op(walk_state->opcode, walk_state->aml);
if (!op) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
}
/* Initialize the op */
#ifdef ACPI_CONSTANT_EVAL_ONLY
op->named.path = path;
#endif
if (node) {
/*
* Put the Node in the "op" object that the parser uses, so we
* can get it again quickly when this scope is closed
*/
op->common.node = node;
op->named.name = node->name.integer;
}
acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state),
op);
*out_op = op;
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_load1_end_op
*
* PARAMETERS: walk_state - Current state of the parse tree walk
*
* RETURN: Status
*
* DESCRIPTION: Ascending callback used during the loading of the namespace,
* both control methods and everything else.
*
******************************************************************************/
acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
{
union acpi_parse_object *op;
acpi_object_type object_type;
acpi_status status = AE_OK;
#ifdef ACPI_ASL_COMPILER
u8 param_count;
#endif
ACPI_FUNCTION_TRACE(ds_load1_end_op);
op = walk_state->op;
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
walk_state));
/*
* Disassembler: handle create field operators here.
*
* create_buffer_field is a deferred op that is typically processed in load
* pass 2. However, disassembly of control method contents walk the parse
* tree with ACPI_PARSE_LOAD_PASS1 and AML_CREATE operators are processed
* in a later walk. This is a problem when there is a control method that
* has the same name as the AML_CREATE object. In this case, any use of the
* name segment will be detected as a method call rather than a reference
* to a buffer field.
*
* This earlier creation during disassembly solves this issue by inserting
* the named object in the ACPI namespace so that references to this name
* would be a name string rather than a method call.
*/
if ((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE) &&
(walk_state->op_info->flags & AML_CREATE)) {
status = acpi_ds_create_buffer_field(op, walk_state);
return_ACPI_STATUS(status);
}
/* We are only interested in opcodes that have an associated name */
if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) {
return_ACPI_STATUS(AE_OK);
}
/* Get the object type to determine if we should pop the scope */
object_type = walk_state->op_info->object_type;
if (walk_state->op_info->flags & AML_FIELD) {
/*
* If we are executing a method, do not create any namespace objects
* during the load phase, only during execution.
*/
if (!walk_state->method_node) {
if (walk_state->opcode == AML_FIELD_OP ||
walk_state->opcode == AML_BANK_FIELD_OP ||
walk_state->opcode == AML_INDEX_FIELD_OP) {
status =
acpi_ds_init_field_objects(op, walk_state);
}
}
return_ACPI_STATUS(status);
}
/*
* If we are executing a method, do not create any namespace objects
* during the load phase, only during execution.
*/
if (!walk_state->method_node) {
if (op->common.aml_opcode == AML_REGION_OP) {
status =
acpi_ex_create_region(op->named.data,
op->named.length,
(acpi_adr_space_type)
((op->common.value.arg)->
common.value.integer),
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
} else if (op->common.aml_opcode == AML_DATA_REGION_OP) {
status =
acpi_ex_create_region(op->named.data,
op->named.length,
ACPI_ADR_SPACE_DATA_TABLE,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
}
if (op->common.aml_opcode == AML_NAME_OP) {
/* For Name opcode, get the object type from the argument */
if (op->common.value.arg) {
object_type = (acpi_ps_get_opcode_info((op->common.
value.arg)->
common.
aml_opcode))->
object_type;
/* Set node type if we have a namespace node */
if (op->common.node) {
op->common.node->type = (u8) object_type;
}
}
}
#ifdef ACPI_ASL_COMPILER
/*
* For external opcode, get the object type from the argument and
* get the parameter count from the argument's next.
*/
if (acpi_gbl_disasm_flag &&
op->common.node && op->common.aml_opcode == AML_EXTERNAL_OP) {
/*
* Note, if this external is not a method
* Op->Common.Value.Arg->Common.Next->Common.Value.Integer == 0
* Therefore, param_count will be 0.
*/
param_count =
(u8)op->common.value.arg->common.next->common.value.integer;
object_type = (u8)op->common.value.arg->common.value.integer;
op->common.node->flags |= ANOBJ_IS_EXTERNAL;
op->common.node->type = (u8)object_type;
acpi_dm_create_subobject_for_external((u8)object_type,
&op->common.node,
param_count);
/*
* Add the external to the external list because we may be
* emitting code based off of the items within the external list.
*/
acpi_dm_add_op_to_external_list(op, op->named.path,
(u8)object_type, param_count,
ACPI_EXT_ORIGIN_FROM_OPCODE |
ACPI_EXT_RESOLVED_REFERENCE);
}
#endif
/*
* If we are executing a method, do not create any namespace objects
* during the load phase, only during execution.
*/
if (!walk_state->method_node) {
if (op->common.aml_opcode == AML_METHOD_OP) {
/*
* method_op pkg_length name_string method_flags term_list
*
* Note: We must create the method node/object pair as soon as we
* see the method declaration. This allows later pass1 parsing
* of invocations of the method (need to know the number of
* arguments.)
*/
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"LOADING-Method: State=%p Op=%p NamedObj=%p\n",
walk_state, op, op->named.node));
if (!acpi_ns_get_attached_object(op->named.node)) {
walk_state->operands[0] =
ACPI_CAST_PTR(void, op->named.node);
walk_state->num_operands = 1;
status =
acpi_ds_create_operands(walk_state,
op->common.value.
arg);
if (ACPI_SUCCESS(status)) {
status =
acpi_ex_create_method(op->named.
data,
op->named.
length,
walk_state);
}
walk_state->operands[0] = NULL;
walk_state->num_operands = 0;
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
}
}
/* Pop the scope stack (only if loading a table) */
if (!walk_state->method_node &&
op->common.aml_opcode != AML_EXTERNAL_OP &&
acpi_ns_opens_scope(object_type)) {
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"(%s): Popping scope for Op %p\n",
acpi_ut_get_type_name(object_type), op));
status = acpi_ds_scope_stack_pop(walk_state);
}
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/dswload.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: exserial - field_unit support for serial address spaces
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdispat.h"
#include "acinterp.h"
#include "amlcode.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("exserial")
/*******************************************************************************
*
* FUNCTION: acpi_ex_read_gpio
*
* PARAMETERS: obj_desc - The named field to read
* buffer - Where the return data is returned
*
* RETURN: Status
*
* DESCRIPTION: Read from a named field that references a Generic Serial Bus
* field
*
******************************************************************************/
acpi_status acpi_ex_read_gpio(union acpi_operand_object *obj_desc, void *buffer)
{
acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ex_read_gpio, obj_desc);
/*
* For GPIO (general_purpose_io), the Address will be the bit offset
* from the previous Connection() operator, making it effectively a
* pin number index. The bit_length is the length of the field, which
* is thus the number of pins.
*/
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"GPIO FieldRead [FROM]: Pin %u Bits %u\n",
obj_desc->field.pin_number_index,
obj_desc->field.bit_length));
/* Lock entire transaction if requested */
acpi_ex_acquire_global_lock(obj_desc->common_field.field_flags);
/* Perform the read */
status = acpi_ex_access_region(obj_desc, 0, (u64 *)buffer, ACPI_READ);
acpi_ex_release_global_lock(obj_desc->common_field.field_flags);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_write_gpio
*
* PARAMETERS: source_desc - Contains data to write. Expect to be
* an Integer object.
* obj_desc - The named field
* result_desc - Where the return value is returned, if any
*
* RETURN: Status
*
* DESCRIPTION: Write to a named field that references a General Purpose I/O
* field.
*
******************************************************************************/
acpi_status
acpi_ex_write_gpio(union acpi_operand_object *source_desc,
union acpi_operand_object *obj_desc,
union acpi_operand_object **return_buffer)
{
acpi_status status;
void *buffer;
ACPI_FUNCTION_TRACE_PTR(ex_write_gpio, obj_desc);
/*
* For GPIO (general_purpose_io), we will bypass the entire field
* mechanism and handoff the bit address and bit width directly to
* the handler. The Address will be the bit offset
* from the previous Connection() operator, making it effectively a
* pin number index. The bit_length is the length of the field, which
* is thus the number of pins.
*/
if (source_desc->common.type != ACPI_TYPE_INTEGER) {
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"GPIO FieldWrite [FROM]: (%s:%X), Value %.8X [TO]: Pin %u Bits %u\n",
acpi_ut_get_type_name(source_desc->common.type),
source_desc->common.type,
(u32)source_desc->integer.value,
obj_desc->field.pin_number_index,
obj_desc->field.bit_length));
buffer = &source_desc->integer.value;
/* Lock entire transaction if requested */
acpi_ex_acquire_global_lock(obj_desc->common_field.field_flags);
/* Perform the write */
status = acpi_ex_access_region(obj_desc, 0, (u64 *)buffer, ACPI_WRITE);
acpi_ex_release_global_lock(obj_desc->common_field.field_flags);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_read_serial_bus
*
* PARAMETERS: obj_desc - The named field to read
* return_buffer - Where the return value is returned, if any
*
* RETURN: Status
*
* DESCRIPTION: Read from a named field that references a serial bus
* (SMBus, IPMI, or GSBus).
*
******************************************************************************/
acpi_status
acpi_ex_read_serial_bus(union acpi_operand_object *obj_desc,
union acpi_operand_object **return_buffer)
{
acpi_status status;
u32 buffer_length;
union acpi_operand_object *buffer_desc;
u32 function;
u16 accessor_type;
ACPI_FUNCTION_TRACE_PTR(ex_read_serial_bus, obj_desc);
/*
* This is an SMBus, GSBus or IPMI read. We must create a buffer to
* hold the data and then directly access the region handler.
*
* Note: SMBus and GSBus protocol value is passed in upper 16-bits
* of Function
*
* Common buffer format:
* Status; (Byte 0 of the data buffer)
* Length; (Byte 1 of the data buffer)
* Data[x-1]: (Bytes 2-x of the arbitrary length data buffer)
*/
switch (obj_desc->field.region_obj->region.space_id) {
case ACPI_ADR_SPACE_SMBUS:
buffer_length = ACPI_SMBUS_BUFFER_SIZE;
function = ACPI_READ | (obj_desc->field.attribute << 16);
break;
case ACPI_ADR_SPACE_IPMI:
buffer_length = ACPI_IPMI_BUFFER_SIZE;
function = ACPI_READ;
break;
case ACPI_ADR_SPACE_GSBUS:
accessor_type = obj_desc->field.attribute;
if (accessor_type == AML_FIELD_ATTRIB_RAW_PROCESS_BYTES) {
ACPI_ERROR((AE_INFO,
"Invalid direct read using bidirectional write-then-read protocol"));
return_ACPI_STATUS(AE_AML_PROTOCOL);
}
status =
acpi_ex_get_protocol_buffer_length(accessor_type,
&buffer_length);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO,
"Invalid protocol ID for GSBus: 0x%4.4X",
accessor_type));
return_ACPI_STATUS(status);
}
/* Add header length to get the full size of the buffer */
buffer_length += ACPI_SERIAL_HEADER_SIZE;
function = ACPI_READ | (accessor_type << 16);
break;
case ACPI_ADR_SPACE_PLATFORM_RT:
buffer_length = ACPI_PRM_INPUT_BUFFER_SIZE;
function = ACPI_READ;
break;
default:
return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID);
}
/* Create the local transfer buffer that is returned to the caller */
buffer_desc = acpi_ut_create_buffer_object(buffer_length);
if (!buffer_desc) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Lock entire transaction if requested */
acpi_ex_acquire_global_lock(obj_desc->common_field.field_flags);
/* Call the region handler for the write-then-read */
status = acpi_ex_access_region(obj_desc, 0,
ACPI_CAST_PTR(u64,
buffer_desc->buffer.
pointer), function);
acpi_ex_release_global_lock(obj_desc->common_field.field_flags);
*return_buffer = buffer_desc;
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_write_serial_bus
*
* PARAMETERS: source_desc - Contains data to write
* obj_desc - The named field
* return_buffer - Where the return value is returned, if any
*
* RETURN: Status
*
* DESCRIPTION: Write to a named field that references a serial bus
* (SMBus, IPMI, GSBus).
*
******************************************************************************/
acpi_status
acpi_ex_write_serial_bus(union acpi_operand_object *source_desc,
union acpi_operand_object *obj_desc,
union acpi_operand_object **return_buffer)
{
acpi_status status;
u32 buffer_length;
u32 data_length;
void *buffer;
union acpi_operand_object *buffer_desc;
u32 function;
u16 accessor_type;
ACPI_FUNCTION_TRACE_PTR(ex_write_serial_bus, obj_desc);
/*
* This is an SMBus, GSBus or IPMI write. We will bypass the entire
* field mechanism and handoff the buffer directly to the handler.
* For these address spaces, the buffer is bidirectional; on a
* write, return data is returned in the same buffer.
*
* Source must be a buffer of sufficient size, these are fixed size:
* ACPI_SMBUS_BUFFER_SIZE, or ACPI_IPMI_BUFFER_SIZE.
*
* Note: SMBus and GSBus protocol type is passed in upper 16-bits
* of Function
*
* Common buffer format:
* Status; (Byte 0 of the data buffer)
* Length; (Byte 1 of the data buffer)
* Data[x-1]: (Bytes 2-x of the arbitrary length data buffer)
*/
if (source_desc->common.type != ACPI_TYPE_BUFFER) {
ACPI_ERROR((AE_INFO,
"SMBus/IPMI/GenericSerialBus write requires "
"Buffer, found type %s",
acpi_ut_get_object_type_name(source_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
switch (obj_desc->field.region_obj->region.space_id) {
case ACPI_ADR_SPACE_SMBUS:
buffer_length = ACPI_SMBUS_BUFFER_SIZE;
function = ACPI_WRITE | (obj_desc->field.attribute << 16);
break;
case ACPI_ADR_SPACE_IPMI:
buffer_length = ACPI_IPMI_BUFFER_SIZE;
function = ACPI_WRITE;
break;
case ACPI_ADR_SPACE_GSBUS:
accessor_type = obj_desc->field.attribute;
status =
acpi_ex_get_protocol_buffer_length(accessor_type,
&buffer_length);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO,
"Invalid protocol ID for GSBus: 0x%4.4X",
accessor_type));
return_ACPI_STATUS(status);
}
/* Add header length to get the full size of the buffer */
buffer_length += ACPI_SERIAL_HEADER_SIZE;
function = ACPI_WRITE | (accessor_type << 16);
break;
case ACPI_ADR_SPACE_PLATFORM_RT:
buffer_length = ACPI_PRM_INPUT_BUFFER_SIZE;
function = ACPI_WRITE;
break;
case ACPI_ADR_SPACE_FIXED_HARDWARE:
buffer_length = ACPI_FFH_INPUT_BUFFER_SIZE;
function = ACPI_WRITE;
break;
default:
return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID);
}
/* Create the transfer/bidirectional/return buffer */
buffer_desc = acpi_ut_create_buffer_object(buffer_length);
if (!buffer_desc) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Copy the input buffer data to the transfer buffer */
buffer = buffer_desc->buffer.pointer;
data_length = ACPI_MIN(buffer_length, source_desc->buffer.length);
memcpy(buffer, source_desc->buffer.pointer, data_length);
/* Lock entire transaction if requested */
acpi_ex_acquire_global_lock(obj_desc->common_field.field_flags);
/*
* Perform the write (returns status and perhaps data in the
* same buffer)
*/
status = acpi_ex_access_region(obj_desc, 0, (u64 *)buffer, function);
acpi_ex_release_global_lock(obj_desc->common_field.field_flags);
*return_buffer = buffer_desc;
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/exserial.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: utlock - Reader/Writer lock interfaces
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utlock")
/*******************************************************************************
*
* FUNCTION: acpi_ut_create_rw_lock
* acpi_ut_delete_rw_lock
*
* PARAMETERS: lock - Pointer to a valid RW lock
*
* RETURN: Status
*
* DESCRIPTION: Reader/writer lock creation and deletion interfaces.
*
******************************************************************************/
acpi_status acpi_ut_create_rw_lock(struct acpi_rw_lock *lock)
{
acpi_status status;
lock->num_readers = 0;
status = acpi_os_create_mutex(&lock->reader_mutex);
if (ACPI_FAILURE(status)) {
return (status);
}
status = acpi_os_create_mutex(&lock->writer_mutex);
return (status);
}
void acpi_ut_delete_rw_lock(struct acpi_rw_lock *lock)
{
acpi_os_delete_mutex(lock->reader_mutex);
acpi_os_delete_mutex(lock->writer_mutex);
lock->num_readers = 0;
lock->reader_mutex = NULL;
lock->writer_mutex = NULL;
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_acquire_read_lock
* acpi_ut_release_read_lock
*
* PARAMETERS: lock - Pointer to a valid RW lock
*
* RETURN: Status
*
* DESCRIPTION: Reader interfaces for reader/writer locks. On acquisition,
* only the first reader acquires the write mutex. On release,
* only the last reader releases the write mutex. Although this
* algorithm can in theory starve writers, this should not be a
* problem with ACPICA since the subsystem is infrequently used
* in comparison to (for example) an I/O system.
*
******************************************************************************/
acpi_status acpi_ut_acquire_read_lock(struct acpi_rw_lock *lock)
{
acpi_status status;
status = acpi_os_acquire_mutex(lock->reader_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Acquire the write lock only for the first reader */
lock->num_readers++;
if (lock->num_readers == 1) {
status =
acpi_os_acquire_mutex(lock->writer_mutex,
ACPI_WAIT_FOREVER);
}
acpi_os_release_mutex(lock->reader_mutex);
return (status);
}
acpi_status acpi_ut_release_read_lock(struct acpi_rw_lock *lock)
{
acpi_status status;
status = acpi_os_acquire_mutex(lock->reader_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Release the write lock only for the very last reader */
lock->num_readers--;
if (lock->num_readers == 0) {
acpi_os_release_mutex(lock->writer_mutex);
}
acpi_os_release_mutex(lock->reader_mutex);
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_acquire_write_lock
* acpi_ut_release_write_lock
*
* PARAMETERS: lock - Pointer to a valid RW lock
*
* RETURN: Status
*
* DESCRIPTION: Writer interfaces for reader/writer locks. Simply acquire or
* release the writer mutex associated with the lock. Acquisition
* of the lock is fully exclusive and will block all readers and
* writers until it is released.
*
******************************************************************************/
acpi_status acpi_ut_acquire_write_lock(struct acpi_rw_lock *lock)
{
acpi_status status;
status = acpi_os_acquire_mutex(lock->writer_mutex, ACPI_WAIT_FOREVER);
return (status);
}
void acpi_ut_release_write_lock(struct acpi_rw_lock *lock)
{
acpi_os_release_mutex(lock->writer_mutex);
}
| linux-master | drivers/acpi/acpica/utlock.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: psopcode - Parser/Interpreter opcode information table
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acopcode.h"
#include "amlcode.h"
#define _COMPONENT ACPI_PARSER
ACPI_MODULE_NAME("psopcode")
/*******************************************************************************
*
* NAME: acpi_gbl_aml_op_info
*
* DESCRIPTION: Opcode table. Each entry contains <opcode, type, name, operands>
* The name is a simple ascii string, the operand specifier is an
* ascii string with one letter per operand. The letter specifies
* the operand type.
*
******************************************************************************/
/*
* Summary of opcode types/flags
*
Opcodes that have associated namespace objects (AML_NSOBJECT flag)
AML_SCOPE_OP
AML_DEVICE_OP
AML_THERMAL_ZONE_OP
AML_METHOD_OP
AML_POWER_RESOURCE_OP
AML_PROCESSOR_OP
AML_FIELD_OP
AML_INDEX_FIELD_OP
AML_BANK_FIELD_OP
AML_NAME_OP
AML_ALIAS_OP
AML_MUTEX_OP
AML_EVENT_OP
AML_REGION_OP
AML_CREATE_FIELD_OP
AML_CREATE_BIT_FIELD_OP
AML_CREATE_BYTE_FIELD_OP
AML_CREATE_WORD_FIELD_OP
AML_CREATE_DWORD_FIELD_OP
AML_CREATE_QWORD_FIELD_OP
AML_INT_NAMEDFIELD_OP
AML_INT_METHODCALL_OP
AML_INT_NAMEPATH_OP
Opcodes that are "namespace" opcodes (AML_NSOPCODE flag)
AML_SCOPE_OP
AML_DEVICE_OP
AML_THERMAL_ZONE_OP
AML_METHOD_OP
AML_POWER_RESOURCE_OP
AML_PROCESSOR_OP
AML_FIELD_OP
AML_INDEX_FIELD_OP
AML_BANK_FIELD_OP
AML_NAME_OP
AML_ALIAS_OP
AML_MUTEX_OP
AML_EVENT_OP
AML_REGION_OP
AML_INT_NAMEDFIELD_OP
Opcodes that have an associated namespace node (AML_NSNODE flag)
AML_SCOPE_OP
AML_DEVICE_OP
AML_THERMAL_ZONE_OP
AML_METHOD_OP
AML_POWER_RESOURCE_OP
AML_PROCESSOR_OP
AML_NAME_OP
AML_ALIAS_OP
AML_MUTEX_OP
AML_EVENT_OP
AML_REGION_OP
AML_CREATE_FIELD_OP
AML_CREATE_BIT_FIELD_OP
AML_CREATE_BYTE_FIELD_OP
AML_CREATE_WORD_FIELD_OP
AML_CREATE_DWORD_FIELD_OP
AML_CREATE_QWORD_FIELD_OP
AML_INT_NAMEDFIELD_OP
AML_INT_METHODCALL_OP
AML_INT_NAMEPATH_OP
Opcodes that define named ACPI objects (AML_NAMED flag)
AML_SCOPE_OP
AML_DEVICE_OP
AML_THERMAL_ZONE_OP
AML_METHOD_OP
AML_POWER_RESOURCE_OP
AML_PROCESSOR_OP
AML_NAME_OP
AML_ALIAS_OP
AML_MUTEX_OP
AML_EVENT_OP
AML_REGION_OP
AML_INT_NAMEDFIELD_OP
Opcodes that contain executable AML as part of the definition that
must be deferred until needed
AML_METHOD_OP
AML_VARIABLE_PACKAGE_OP
AML_CREATE_FIELD_OP
AML_CREATE_BIT_FIELD_OP
AML_CREATE_BYTE_FIELD_OP
AML_CREATE_WORD_FIELD_OP
AML_CREATE_DWORD_FIELD_OP
AML_CREATE_QWORD_FIELD_OP
AML_REGION_OP
AML_BUFFER_OP
Field opcodes
AML_CREATE_FIELD_OP
AML_FIELD_OP
AML_INDEX_FIELD_OP
AML_BANK_FIELD_OP
Field "Create" opcodes
AML_CREATE_FIELD_OP
AML_CREATE_BIT_FIELD_OP
AML_CREATE_BYTE_FIELD_OP
AML_CREATE_WORD_FIELD_OP
AML_CREATE_DWORD_FIELD_OP
AML_CREATE_QWORD_FIELD_OP
******************************************************************************/
/*
* Master Opcode information table. A summary of everything we know about each
* opcode, all in one place.
*/
const struct acpi_opcode_info acpi_gbl_aml_op_info[AML_NUM_OPCODES] = {
/*! [Begin] no source code translation */
/* Index Name Parser Args Interpreter Args ObjectType Class Type Flags */
/* 00 */ ACPI_OP("Zero", ARGP_ZERO_OP, ARGI_ZERO_OP, ACPI_TYPE_INTEGER,
AML_CLASS_ARGUMENT, AML_TYPE_CONSTANT, AML_CONSTANT),
/* 01 */ ACPI_OP("One", ARGP_ONE_OP, ARGI_ONE_OP, ACPI_TYPE_INTEGER,
AML_CLASS_ARGUMENT, AML_TYPE_CONSTANT, AML_CONSTANT),
/* 02 */ ACPI_OP("Alias", ARGP_ALIAS_OP, ARGI_ALIAS_OP,
ACPI_TYPE_LOCAL_ALIAS, AML_CLASS_NAMED_OBJECT,
AML_TYPE_NAMED_SIMPLE,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_NSNODE | AML_NAMED),
/* 03 */ ACPI_OP("Name", ARGP_NAME_OP, ARGI_NAME_OP, ACPI_TYPE_ANY,
AML_CLASS_NAMED_OBJECT, AML_TYPE_NAMED_COMPLEX,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_NSNODE | AML_NAMED),
/* 04 */ ACPI_OP("ByteConst", ARGP_BYTE_OP, ARGI_BYTE_OP,
ACPI_TYPE_INTEGER, AML_CLASS_ARGUMENT,
AML_TYPE_LITERAL, AML_CONSTANT),
/* 05 */ ACPI_OP("WordConst", ARGP_WORD_OP, ARGI_WORD_OP,
ACPI_TYPE_INTEGER, AML_CLASS_ARGUMENT,
AML_TYPE_LITERAL, AML_CONSTANT),
/* 06 */ ACPI_OP("DwordConst", ARGP_DWORD_OP, ARGI_DWORD_OP,
ACPI_TYPE_INTEGER, AML_CLASS_ARGUMENT,
AML_TYPE_LITERAL, AML_CONSTANT),
/* 07 */ ACPI_OP("String", ARGP_STRING_OP, ARGI_STRING_OP,
ACPI_TYPE_STRING, AML_CLASS_ARGUMENT,
AML_TYPE_LITERAL, AML_CONSTANT),
/* 08 */ ACPI_OP("Scope", ARGP_SCOPE_OP, ARGI_SCOPE_OP,
ACPI_TYPE_LOCAL_SCOPE, AML_CLASS_NAMED_OBJECT,
AML_TYPE_NAMED_NO_OBJ,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_NSNODE | AML_NAMED),
/* 09 */ ACPI_OP("Buffer", ARGP_BUFFER_OP, ARGI_BUFFER_OP,
ACPI_TYPE_BUFFER, AML_CLASS_CREATE,
AML_TYPE_CREATE_OBJECT,
AML_HAS_ARGS | AML_DEFER | AML_CONSTANT),
/* 0A */ ACPI_OP("Package", ARGP_PACKAGE_OP, ARGI_PACKAGE_OP,
ACPI_TYPE_PACKAGE, AML_CLASS_CREATE,
AML_TYPE_CREATE_OBJECT,
AML_HAS_ARGS | AML_DEFER | AML_CONSTANT),
/* 0B */ ACPI_OP("Method", ARGP_METHOD_OP, ARGI_METHOD_OP,
ACPI_TYPE_METHOD, AML_CLASS_NAMED_OBJECT,
AML_TYPE_NAMED_COMPLEX,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_NSNODE | AML_NAMED | AML_DEFER),
/* 0C */ ACPI_OP("Local0", ARGP_LOCAL0, ARGI_LOCAL0,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_LOCAL_VARIABLE, 0),
/* 0D */ ACPI_OP("Local1", ARGP_LOCAL1, ARGI_LOCAL1,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_LOCAL_VARIABLE, 0),
/* 0E */ ACPI_OP("Local2", ARGP_LOCAL2, ARGI_LOCAL2,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_LOCAL_VARIABLE, 0),
/* 0F */ ACPI_OP("Local3", ARGP_LOCAL3, ARGI_LOCAL3,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_LOCAL_VARIABLE, 0),
/* 10 */ ACPI_OP("Local4", ARGP_LOCAL4, ARGI_LOCAL4,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_LOCAL_VARIABLE, 0),
/* 11 */ ACPI_OP("Local5", ARGP_LOCAL5, ARGI_LOCAL5,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_LOCAL_VARIABLE, 0),
/* 12 */ ACPI_OP("Local6", ARGP_LOCAL6, ARGI_LOCAL6,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_LOCAL_VARIABLE, 0),
/* 13 */ ACPI_OP("Local7", ARGP_LOCAL7, ARGI_LOCAL7,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_LOCAL_VARIABLE, 0),
/* 14 */ ACPI_OP("Arg0", ARGP_ARG0, ARGI_ARG0,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_METHOD_ARGUMENT, 0),
/* 15 */ ACPI_OP("Arg1", ARGP_ARG1, ARGI_ARG1,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_METHOD_ARGUMENT, 0),
/* 16 */ ACPI_OP("Arg2", ARGP_ARG2, ARGI_ARG2,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_METHOD_ARGUMENT, 0),
/* 17 */ ACPI_OP("Arg3", ARGP_ARG3, ARGI_ARG3,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_METHOD_ARGUMENT, 0),
/* 18 */ ACPI_OP("Arg4", ARGP_ARG4, ARGI_ARG4,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_METHOD_ARGUMENT, 0),
/* 19 */ ACPI_OP("Arg5", ARGP_ARG5, ARGI_ARG5,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_METHOD_ARGUMENT, 0),
/* 1A */ ACPI_OP("Arg6", ARGP_ARG6, ARGI_ARG6,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_METHOD_ARGUMENT, 0),
/* 1B */ ACPI_OP("Store", ARGP_STORE_OP, ARGI_STORE_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_1A_1T_1R,
AML_FLAGS_EXEC_1A_1T_1R),
/* 1C */ ACPI_OP("RefOf", ARGP_REF_OF_OP, ARGI_REF_OF_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_1A_0T_1R,
AML_FLAGS_EXEC_1A_0T_1R),
/* 1D */ ACPI_OP("Add", ARGP_ADD_OP, ARGI_ADD_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_MATH | AML_CONSTANT),
/* 1E */ ACPI_OP("Concatenate", ARGP_CONCAT_OP, ARGI_CONCAT_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_CONSTANT),
/* 1F */ ACPI_OP("Subtract", ARGP_SUBTRACT_OP, ARGI_SUBTRACT_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_MATH | AML_CONSTANT),
/* 20 */ ACPI_OP("Increment", ARGP_INCREMENT_OP, ARGI_INCREMENT_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_0T_1R,
AML_FLAGS_EXEC_1A_0T_1R | AML_CONSTANT),
/* 21 */ ACPI_OP("Decrement", ARGP_DECREMENT_OP, ARGI_DECREMENT_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_0T_1R,
AML_FLAGS_EXEC_1A_0T_1R | AML_CONSTANT),
/* 22 */ ACPI_OP("Multiply", ARGP_MULTIPLY_OP, ARGI_MULTIPLY_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_MATH | AML_CONSTANT),
/* 23 */ ACPI_OP("Divide", ARGP_DIVIDE_OP, ARGI_DIVIDE_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_2A_2T_1R,
AML_FLAGS_EXEC_2A_2T_1R | AML_CONSTANT),
/* 24 */ ACPI_OP("ShiftLeft", ARGP_SHIFT_LEFT_OP, ARGI_SHIFT_LEFT_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_MATH | AML_CONSTANT),
/* 25 */ ACPI_OP("ShiftRight", ARGP_SHIFT_RIGHT_OP, ARGI_SHIFT_RIGHT_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_MATH | AML_CONSTANT),
/* 26 */ ACPI_OP("And", ARGP_BIT_AND_OP, ARGI_BIT_AND_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_MATH | AML_CONSTANT),
/* 27 */ ACPI_OP("NAnd", ARGP_BIT_NAND_OP, ARGI_BIT_NAND_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_MATH | AML_CONSTANT),
/* 28 */ ACPI_OP("Or", ARGP_BIT_OR_OP, ARGI_BIT_OR_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_MATH | AML_CONSTANT),
/* 29 */ ACPI_OP("NOr", ARGP_BIT_NOR_OP, ARGI_BIT_NOR_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_MATH | AML_CONSTANT),
/* 2A */ ACPI_OP("XOr", ARGP_BIT_XOR_OP, ARGI_BIT_XOR_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_MATH | AML_CONSTANT),
/* 2B */ ACPI_OP("Not", ARGP_BIT_NOT_OP, ARGI_BIT_NOT_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_1A_1T_1R,
AML_FLAGS_EXEC_1A_1T_1R | AML_CONSTANT),
/* 2C */ ACPI_OP("FindSetLeftBit", ARGP_FIND_SET_LEFT_BIT_OP,
ARGI_FIND_SET_LEFT_BIT_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_1A_1T_1R,
AML_FLAGS_EXEC_1A_1T_1R | AML_CONSTANT),
/* 2D */ ACPI_OP("FindSetRightBit", ARGP_FIND_SET_RIGHT_BIT_OP,
ARGI_FIND_SET_RIGHT_BIT_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_1A_1T_1R,
AML_FLAGS_EXEC_1A_1T_1R | AML_CONSTANT),
/* 2E */ ACPI_OP("DerefOf", ARGP_DEREF_OF_OP, ARGI_DEREF_OF_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_0T_1R, AML_FLAGS_EXEC_1A_0T_1R),
/* 2F */ ACPI_OP("Notify", ARGP_NOTIFY_OP, ARGI_NOTIFY_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_2A_0T_0R, AML_FLAGS_EXEC_2A_0T_0R),
/* 30 */ ACPI_OP("SizeOf", ARGP_SIZE_OF_OP, ARGI_SIZE_OF_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_0T_1R,
AML_FLAGS_EXEC_1A_0T_1R | AML_NO_OPERAND_RESOLVE),
/* 31 */ ACPI_OP("Index", ARGP_INDEX_OP, ARGI_INDEX_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R),
/* 32 */ ACPI_OP("Match", ARGP_MATCH_OP, ARGI_MATCH_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_6A_0T_1R,
AML_FLAGS_EXEC_6A_0T_1R | AML_CONSTANT),
/* 33 */ ACPI_OP("CreateDWordField", ARGP_CREATE_DWORD_FIELD_OP,
ARGI_CREATE_DWORD_FIELD_OP,
ACPI_TYPE_BUFFER_FIELD, AML_CLASS_CREATE,
AML_TYPE_CREATE_FIELD,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSNODE |
AML_DEFER | AML_CREATE),
/* 34 */ ACPI_OP("CreateWordField", ARGP_CREATE_WORD_FIELD_OP,
ARGI_CREATE_WORD_FIELD_OP,
ACPI_TYPE_BUFFER_FIELD, AML_CLASS_CREATE,
AML_TYPE_CREATE_FIELD,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSNODE |
AML_DEFER | AML_CREATE),
/* 35 */ ACPI_OP("CreateByteField", ARGP_CREATE_BYTE_FIELD_OP,
ARGI_CREATE_BYTE_FIELD_OP,
ACPI_TYPE_BUFFER_FIELD, AML_CLASS_CREATE,
AML_TYPE_CREATE_FIELD,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSNODE |
AML_DEFER | AML_CREATE),
/* 36 */ ACPI_OP("CreateBitField", ARGP_CREATE_BIT_FIELD_OP,
ARGI_CREATE_BIT_FIELD_OP,
ACPI_TYPE_BUFFER_FIELD, AML_CLASS_CREATE,
AML_TYPE_CREATE_FIELD,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSNODE |
AML_DEFER | AML_CREATE),
/* 37 */ ACPI_OP("ObjectType", ARGP_OBJECT_TYPE_OP, ARGI_OBJECT_TYPE_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_0T_1R,
AML_FLAGS_EXEC_1A_0T_1R | AML_NO_OPERAND_RESOLVE),
/* 38 */ ACPI_OP("LAnd", ARGP_LAND_OP, ARGI_LAND_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_0T_1R,
AML_FLAGS_EXEC_2A_0T_1R | AML_LOGICAL_NUMERIC |
AML_CONSTANT),
/* 39 */ ACPI_OP("LOr", ARGP_LOR_OP, ARGI_LOR_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_0T_1R,
AML_FLAGS_EXEC_2A_0T_1R | AML_LOGICAL_NUMERIC |
AML_CONSTANT),
/* 3A */ ACPI_OP("LNot", ARGP_LNOT_OP, ARGI_LNOT_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_1A_0T_1R,
AML_FLAGS_EXEC_1A_0T_1R | AML_CONSTANT),
/* 3B */ ACPI_OP("LEqual", ARGP_LEQUAL_OP, ARGI_LEQUAL_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_2A_0T_1R,
AML_FLAGS_EXEC_2A_0T_1R | AML_LOGICAL | AML_CONSTANT),
/* 3C */ ACPI_OP("LGreater", ARGP_LGREATER_OP, ARGI_LGREATER_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_2A_0T_1R,
AML_FLAGS_EXEC_2A_0T_1R | AML_LOGICAL | AML_CONSTANT),
/* 3D */ ACPI_OP("LLess", ARGP_LLESS_OP, ARGI_LLESS_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_0T_1R,
AML_FLAGS_EXEC_2A_0T_1R | AML_LOGICAL | AML_CONSTANT),
/* 3E */ ACPI_OP("If", ARGP_IF_OP, ARGI_IF_OP, ACPI_TYPE_ANY,
AML_CLASS_CONTROL, AML_TYPE_CONTROL, AML_HAS_ARGS),
/* 3F */ ACPI_OP("Else", ARGP_ELSE_OP, ARGI_ELSE_OP, ACPI_TYPE_ANY,
AML_CLASS_CONTROL, AML_TYPE_CONTROL, AML_HAS_ARGS),
/* 40 */ ACPI_OP("While", ARGP_WHILE_OP, ARGI_WHILE_OP, ACPI_TYPE_ANY,
AML_CLASS_CONTROL, AML_TYPE_CONTROL, AML_HAS_ARGS),
/* 41 */ ACPI_OP("Noop", ARGP_NOOP_OP, ARGI_NOOP_OP, ACPI_TYPE_ANY,
AML_CLASS_CONTROL, AML_TYPE_CONTROL, 0),
/* 42 */ ACPI_OP("Return", ARGP_RETURN_OP, ARGI_RETURN_OP,
ACPI_TYPE_ANY, AML_CLASS_CONTROL,
AML_TYPE_CONTROL, AML_HAS_ARGS),
/* 43 */ ACPI_OP("Break", ARGP_BREAK_OP, ARGI_BREAK_OP, ACPI_TYPE_ANY,
AML_CLASS_CONTROL, AML_TYPE_CONTROL, 0),
/* 44 */ ACPI_OP("BreakPoint", ARGP_BREAK_POINT_OP, ARGI_BREAK_POINT_OP,
ACPI_TYPE_ANY, AML_CLASS_CONTROL, AML_TYPE_CONTROL, 0),
/* 45 */ ACPI_OP("Ones", ARGP_ONES_OP, ARGI_ONES_OP, ACPI_TYPE_INTEGER,
AML_CLASS_ARGUMENT, AML_TYPE_CONSTANT, AML_CONSTANT),
/* Prefixed opcodes (Two-byte opcodes with a prefix op) */
/* 46 */ ACPI_OP("Mutex", ARGP_MUTEX_OP, ARGI_MUTEX_OP, ACPI_TYPE_MUTEX,
AML_CLASS_NAMED_OBJECT, AML_TYPE_NAMED_SIMPLE,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_NSNODE | AML_NAMED),
/* 47 */ ACPI_OP("Event", ARGP_EVENT_OP, ARGI_EVENT_OP, ACPI_TYPE_EVENT,
AML_CLASS_NAMED_OBJECT, AML_TYPE_NAMED_SIMPLE,
AML_NSOBJECT | AML_NSOPCODE | AML_NSNODE | AML_NAMED),
/* 48 */ ACPI_OP("CondRefOf", ARGP_COND_REF_OF_OP, ARGI_COND_REF_OF_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_1T_1R, AML_FLAGS_EXEC_1A_1T_1R),
/* 49 */ ACPI_OP("CreateField", ARGP_CREATE_FIELD_OP,
ARGI_CREATE_FIELD_OP, ACPI_TYPE_BUFFER_FIELD,
AML_CLASS_CREATE, AML_TYPE_CREATE_FIELD,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSNODE |
AML_DEFER | AML_FIELD | AML_CREATE),
/* 4A */ ACPI_OP("Load", ARGP_LOAD_OP, ARGI_LOAD_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_1A_1T_1R,
AML_FLAGS_EXEC_1A_1T_1R),
/* 4B */ ACPI_OP("Stall", ARGP_STALL_OP, ARGI_STALL_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_1A_0T_0R,
AML_FLAGS_EXEC_1A_0T_0R),
/* 4C */ ACPI_OP("Sleep", ARGP_SLEEP_OP, ARGI_SLEEP_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_1A_0T_0R,
AML_FLAGS_EXEC_1A_0T_0R),
/* 4D */ ACPI_OP("Acquire", ARGP_ACQUIRE_OP, ARGI_ACQUIRE_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_2A_0T_1R, AML_FLAGS_EXEC_2A_0T_1R),
/* 4E */ ACPI_OP("Signal", ARGP_SIGNAL_OP, ARGI_SIGNAL_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_0T_0R, AML_FLAGS_EXEC_1A_0T_0R),
/* 4F */ ACPI_OP("Wait", ARGP_WAIT_OP, ARGI_WAIT_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_0T_1R,
AML_FLAGS_EXEC_2A_0T_1R),
/* 50 */ ACPI_OP("Reset", ARGP_RESET_OP, ARGI_RESET_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_1A_0T_0R,
AML_FLAGS_EXEC_1A_0T_0R),
/* 51 */ ACPI_OP("Release", ARGP_RELEASE_OP, ARGI_RELEASE_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_0T_0R, AML_FLAGS_EXEC_1A_0T_0R),
/* 52 */ ACPI_OP("FromBCD", ARGP_FROM_BCD_OP, ARGI_FROM_BCD_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_1T_1R,
AML_FLAGS_EXEC_1A_1T_1R | AML_CONSTANT),
/* 53 */ ACPI_OP("ToBCD", ARGP_TO_BCD_OP, ARGI_TO_BCD_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_1A_1T_1R,
AML_FLAGS_EXEC_1A_1T_1R | AML_CONSTANT),
/* 54 */ ACPI_OP("Unload", ARGP_UNLOAD_OP, ARGI_UNLOAD_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_0T_0R, AML_FLAGS_EXEC_1A_0T_0R),
/* 55 */ ACPI_OP("Revision", ARGP_REVISION_OP, ARGI_REVISION_OP,
ACPI_TYPE_INTEGER, AML_CLASS_ARGUMENT,
AML_TYPE_CONSTANT, 0),
/* 56 */ ACPI_OP("Debug", ARGP_DEBUG_OP, ARGI_DEBUG_OP,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_CONSTANT, 0),
/* 57 */ ACPI_OP("Fatal", ARGP_FATAL_OP, ARGI_FATAL_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_3A_0T_0R,
AML_FLAGS_EXEC_3A_0T_0R),
/* 58 */ ACPI_OP("OperationRegion", ARGP_REGION_OP, ARGI_REGION_OP,
ACPI_TYPE_REGION, AML_CLASS_NAMED_OBJECT,
AML_TYPE_NAMED_COMPLEX,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_NSNODE | AML_NAMED | AML_DEFER),
/* 59 */ ACPI_OP("Field", ARGP_FIELD_OP, ARGI_FIELD_OP, ACPI_TYPE_ANY,
AML_CLASS_NAMED_OBJECT, AML_TYPE_NAMED_FIELD,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_FIELD),
/* 5A */ ACPI_OP("Device", ARGP_DEVICE_OP, ARGI_DEVICE_OP,
ACPI_TYPE_DEVICE, AML_CLASS_NAMED_OBJECT,
AML_TYPE_NAMED_NO_OBJ,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_NSNODE | AML_NAMED),
/* 5B */ ACPI_OP("Processor", ARGP_PROCESSOR_OP, ARGI_PROCESSOR_OP,
ACPI_TYPE_PROCESSOR, AML_CLASS_NAMED_OBJECT,
AML_TYPE_NAMED_SIMPLE,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_NSNODE | AML_NAMED),
/* 5C */ ACPI_OP("PowerResource", ARGP_POWER_RES_OP, ARGI_POWER_RES_OP,
ACPI_TYPE_POWER, AML_CLASS_NAMED_OBJECT,
AML_TYPE_NAMED_SIMPLE,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_NSNODE | AML_NAMED),
/* 5D */ ACPI_OP("ThermalZone", ARGP_THERMAL_ZONE_OP,
ARGI_THERMAL_ZONE_OP, ACPI_TYPE_THERMAL,
AML_CLASS_NAMED_OBJECT, AML_TYPE_NAMED_NO_OBJ,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_NSNODE | AML_NAMED),
/* 5E */ ACPI_OP("IndexField", ARGP_INDEX_FIELD_OP, ARGI_INDEX_FIELD_OP,
ACPI_TYPE_ANY, AML_CLASS_NAMED_OBJECT,
AML_TYPE_NAMED_FIELD,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_FIELD),
/* 5F */ ACPI_OP("BankField", ARGP_BANK_FIELD_OP, ARGI_BANK_FIELD_OP,
ACPI_TYPE_LOCAL_BANK_FIELD,
AML_CLASS_NAMED_OBJECT, AML_TYPE_NAMED_FIELD,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_FIELD | AML_DEFER),
/* Internal opcodes that map to invalid AML opcodes */
/* 60 */ ACPI_OP("LNotEqual", ARGP_LNOTEQUAL_OP, ARGI_LNOTEQUAL_OP,
ACPI_TYPE_ANY, AML_CLASS_INTERNAL,
AML_TYPE_BOGUS, AML_HAS_ARGS | AML_CONSTANT),
/* 61 */ ACPI_OP("LLessEqual", ARGP_LLESSEQUAL_OP, ARGI_LLESSEQUAL_OP,
ACPI_TYPE_ANY, AML_CLASS_INTERNAL,
AML_TYPE_BOGUS, AML_HAS_ARGS | AML_CONSTANT),
/* 62 */ ACPI_OP("LGreaterEqual", ARGP_LGREATEREQUAL_OP,
ARGI_LGREATEREQUAL_OP, ACPI_TYPE_ANY,
AML_CLASS_INTERNAL, AML_TYPE_BOGUS,
AML_HAS_ARGS | AML_CONSTANT),
/* 63 */ ACPI_OP("-NamePath-", ARGP_NAMEPATH_OP, ARGI_NAMEPATH_OP,
ACPI_TYPE_LOCAL_REFERENCE, AML_CLASS_ARGUMENT,
AML_TYPE_LITERAL, AML_NSOBJECT | AML_NSNODE),
/* 64 */ ACPI_OP("-MethodCall-", ARGP_METHODCALL_OP, ARGI_METHODCALL_OP,
ACPI_TYPE_METHOD, AML_CLASS_METHOD_CALL,
AML_TYPE_METHOD_CALL,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSNODE),
/* 65 */ ACPI_OP("-ByteList-", ARGP_BYTELIST_OP, ARGI_BYTELIST_OP,
ACPI_TYPE_ANY, AML_CLASS_ARGUMENT,
AML_TYPE_LITERAL, 0),
/* 66 */ ACPI_OP("-ReservedField-", ARGP_RESERVEDFIELD_OP,
ARGI_RESERVEDFIELD_OP, ACPI_TYPE_ANY,
AML_CLASS_INTERNAL, AML_TYPE_BOGUS, 0),
/* 67 */ ACPI_OP("-NamedField-", ARGP_NAMEDFIELD_OP, ARGI_NAMEDFIELD_OP,
ACPI_TYPE_ANY, AML_CLASS_INTERNAL,
AML_TYPE_BOGUS,
AML_NSOBJECT | AML_NSOPCODE | AML_NSNODE | AML_NAMED),
/* 68 */ ACPI_OP("-AccessField-", ARGP_ACCESSFIELD_OP,
ARGI_ACCESSFIELD_OP, ACPI_TYPE_ANY,
AML_CLASS_INTERNAL, AML_TYPE_BOGUS, 0),
/* 69 */ ACPI_OP("-StaticString", ARGP_STATICSTRING_OP,
ARGI_STATICSTRING_OP, ACPI_TYPE_ANY,
AML_CLASS_INTERNAL, AML_TYPE_BOGUS, 0),
/* 6A */ ACPI_OP("-Return Value-", ARG_NONE, ARG_NONE, ACPI_TYPE_ANY,
AML_CLASS_RETURN_VALUE, AML_TYPE_RETURN,
AML_HAS_ARGS | AML_HAS_RETVAL),
/* 6B */ ACPI_OP("-UNKNOWN_OP-", ARG_NONE, ARG_NONE, ACPI_TYPE_INVALID,
AML_CLASS_UNKNOWN, AML_TYPE_BOGUS, AML_HAS_ARGS),
/* 6C */ ACPI_OP("-ASCII_ONLY-", ARG_NONE, ARG_NONE, ACPI_TYPE_ANY,
AML_CLASS_ASCII, AML_TYPE_BOGUS, AML_HAS_ARGS),
/* 6D */ ACPI_OP("-PREFIX_ONLY-", ARG_NONE, ARG_NONE, ACPI_TYPE_ANY,
AML_CLASS_PREFIX, AML_TYPE_BOGUS, AML_HAS_ARGS),
/* ACPI 2.0 opcodes */
/* 6E */ ACPI_OP("QwordConst", ARGP_QWORD_OP, ARGI_QWORD_OP,
ACPI_TYPE_INTEGER, AML_CLASS_ARGUMENT,
AML_TYPE_LITERAL, AML_CONSTANT),
/* 6F */ ACPI_OP("Package", /* Var */ ARGP_VAR_PACKAGE_OP,
ARGI_VAR_PACKAGE_OP, ACPI_TYPE_PACKAGE,
AML_CLASS_CREATE, AML_TYPE_CREATE_OBJECT,
AML_HAS_ARGS | AML_DEFER),
/* 70 */ ACPI_OP("ConcatenateResTemplate", ARGP_CONCAT_RES_OP,
ARGI_CONCAT_RES_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_CONSTANT),
/* 71 */ ACPI_OP("Mod", ARGP_MOD_OP, ARGI_MOD_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_CONSTANT),
/* 72 */ ACPI_OP("CreateQWordField", ARGP_CREATE_QWORD_FIELD_OP,
ARGI_CREATE_QWORD_FIELD_OP,
ACPI_TYPE_BUFFER_FIELD, AML_CLASS_CREATE,
AML_TYPE_CREATE_FIELD,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSNODE |
AML_DEFER | AML_CREATE),
/* 73 */ ACPI_OP("ToBuffer", ARGP_TO_BUFFER_OP, ARGI_TO_BUFFER_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_1T_1R,
AML_FLAGS_EXEC_1A_1T_1R | AML_CONSTANT),
/* 74 */ ACPI_OP("ToDecimalString", ARGP_TO_DEC_STR_OP,
ARGI_TO_DEC_STR_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_1A_1T_1R,
AML_FLAGS_EXEC_1A_1T_1R | AML_CONSTANT),
/* 75 */ ACPI_OP("ToHexString", ARGP_TO_HEX_STR_OP, ARGI_TO_HEX_STR_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_1T_1R,
AML_FLAGS_EXEC_1A_1T_1R | AML_CONSTANT),
/* 76 */ ACPI_OP("ToInteger", ARGP_TO_INTEGER_OP, ARGI_TO_INTEGER_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_1T_1R,
AML_FLAGS_EXEC_1A_1T_1R | AML_CONSTANT),
/* 77 */ ACPI_OP("ToString", ARGP_TO_STRING_OP, ARGI_TO_STRING_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_2A_1T_1R,
AML_FLAGS_EXEC_2A_1T_1R | AML_CONSTANT),
/* 78 */ ACPI_OP("CopyObject", ARGP_COPY_OP, ARGI_COPY_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_1A_1T_1R, AML_FLAGS_EXEC_1A_1T_1R),
/* 79 */ ACPI_OP("Mid", ARGP_MID_OP, ARGI_MID_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_3A_1T_1R,
AML_FLAGS_EXEC_3A_1T_1R | AML_CONSTANT),
/* 7A */ ACPI_OP("Continue", ARGP_CONTINUE_OP, ARGI_CONTINUE_OP,
ACPI_TYPE_ANY, AML_CLASS_CONTROL, AML_TYPE_CONTROL, 0),
/* 7B */ ACPI_OP("LoadTable", ARGP_LOAD_TABLE_OP, ARGI_LOAD_TABLE_OP,
ACPI_TYPE_ANY, AML_CLASS_EXECUTE,
AML_TYPE_EXEC_6A_0T_1R, AML_FLAGS_EXEC_6A_0T_1R),
/* 7C */ ACPI_OP("DataTableRegion", ARGP_DATA_REGION_OP,
ARGI_DATA_REGION_OP, ACPI_TYPE_REGION,
AML_CLASS_NAMED_OBJECT, AML_TYPE_NAMED_COMPLEX,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_NSNODE | AML_NAMED | AML_DEFER),
/* 7D */ ACPI_OP("[EvalSubTree]", ARGP_SCOPE_OP, ARGI_SCOPE_OP,
ACPI_TYPE_ANY, AML_CLASS_NAMED_OBJECT,
AML_TYPE_NAMED_NO_OBJ,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_NSNODE),
/* ACPI 3.0 opcodes */
/* 7E */ ACPI_OP("Timer", ARGP_TIMER_OP, ARGI_TIMER_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_0A_0T_1R,
AML_FLAGS_EXEC_0A_0T_1R | AML_NO_OPERAND_RESOLVE),
/* ACPI 5.0 opcodes */
/* 7F */ ACPI_OP("-ConnectField-", ARGP_CONNECTFIELD_OP,
ARGI_CONNECTFIELD_OP, ACPI_TYPE_ANY,
AML_CLASS_INTERNAL, AML_TYPE_BOGUS, AML_HAS_ARGS),
/* 80 */ ACPI_OP("-ExtAccessField-", ARGP_CONNECTFIELD_OP,
ARGI_CONNECTFIELD_OP, ACPI_TYPE_ANY,
AML_CLASS_INTERNAL, AML_TYPE_BOGUS, 0),
/* ACPI 6.0 opcodes */
/* 81 */ ACPI_OP("External", ARGP_EXTERNAL_OP, ARGI_EXTERNAL_OP,
ACPI_TYPE_ANY, AML_CLASS_NAMED_OBJECT,
AML_TYPE_NAMED_SIMPLE,
AML_HAS_ARGS | AML_NSOBJECT | AML_NSOPCODE |
AML_NSNODE | AML_NAMED),
/* 82 */ ACPI_OP("Comment", ARGP_COMMENT_OP, ARGI_COMMENT_OP,
ACPI_TYPE_STRING, AML_CLASS_ARGUMENT,
AML_TYPE_LITERAL, AML_CONSTANT)
/*! [End] no source code translation !*/
};
| linux-master | drivers/acpi/acpica/psopcode.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: dsinit - Object initialization namespace walk
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdispat.h"
#include "acnamesp.h"
#include "actables.h"
#include "acinterp.h"
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dsinit")
/* Local prototypes */
static acpi_status
acpi_ds_init_one_object(acpi_handle obj_handle,
u32 level, void *context, void **return_value);
/*******************************************************************************
*
* FUNCTION: acpi_ds_init_one_object
*
* PARAMETERS: obj_handle - Node for the object
* level - Current nesting level
* context - Points to a init info struct
* return_value - Not used
*
* RETURN: Status
*
* DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object
* within the namespace.
*
* Currently, the only objects that require initialization are:
* 1) Methods
* 2) Operation Regions
*
******************************************************************************/
static acpi_status
acpi_ds_init_one_object(acpi_handle obj_handle,
u32 level, void *context, void **return_value)
{
struct acpi_init_walk_info *info =
(struct acpi_init_walk_info *)context;
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
acpi_status status;
union acpi_operand_object *obj_desc;
ACPI_FUNCTION_ENTRY();
/*
* We are only interested in NS nodes owned by the table that
* was just loaded
*/
if (node->owner_id != info->owner_id) {
return (AE_OK);
}
info->object_count++;
/* And even then, we are only interested in a few object types */
switch (acpi_ns_get_type(obj_handle)) {
case ACPI_TYPE_REGION:
status = acpi_ds_initialize_region(obj_handle);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"During Region initialization %p [%4.4s]",
obj_handle,
acpi_ut_get_node_name(obj_handle)));
}
info->op_region_count++;
break;
case ACPI_TYPE_METHOD:
/*
* Auto-serialization support. We will examine each method that is
* not_serialized to determine if it creates any Named objects. If
* it does, it will be marked serialized to prevent problems if
* the method is entered by two or more threads and an attempt is
* made to create the same named object twice -- which results in
* an AE_ALREADY_EXISTS exception and method abort.
*/
info->method_count++;
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
break;
}
/* Ignore if already serialized */
if (obj_desc->method.info_flags & ACPI_METHOD_SERIALIZED) {
info->serial_method_count++;
break;
}
if (acpi_gbl_auto_serialize_methods) {
/* Parse/scan method and serialize it if necessary */
acpi_ds_auto_serialize_method(node, obj_desc);
if (obj_desc->method.
info_flags & ACPI_METHOD_SERIALIZED) {
/* Method was just converted to Serialized */
info->serial_method_count++;
info->serialized_method_count++;
break;
}
}
info->non_serial_method_count++;
break;
case ACPI_TYPE_DEVICE:
info->device_count++;
break;
default:
break;
}
/*
* We ignore errors from above, and always return OK, since
* we don't want to abort the walk on a single error.
*/
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_initialize_objects
*
* PARAMETERS: table_desc - Descriptor for parent ACPI table
* start_node - Root of subtree to be initialized.
*
* RETURN: Status
*
* DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
* necessary initialization on the objects found therein
*
******************************************************************************/
acpi_status
acpi_ds_initialize_objects(u32 table_index,
struct acpi_namespace_node *start_node)
{
acpi_status status;
struct acpi_init_walk_info info;
struct acpi_table_header *table;
acpi_owner_id owner_id;
ACPI_FUNCTION_TRACE(ds_initialize_objects);
status = acpi_tb_get_owner_id(table_index, &owner_id);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"**** Starting initialization of namespace objects ****\n"));
/* Set all init info to zero */
memset(&info, 0, sizeof(struct acpi_init_walk_info));
info.owner_id = owner_id;
info.table_index = table_index;
/* Walk entire namespace from the supplied root */
/*
* We don't use acpi_walk_namespace since we do not want to acquire
* the namespace reader lock.
*/
status =
acpi_ns_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX,
ACPI_NS_WALK_NO_UNLOCK,
acpi_ds_init_one_object, NULL, &info, NULL);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
}
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* DSDT is always the first AML table */
if (ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_DSDT)) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
"\nACPI table initialization:\n"));
}
/* Summary of objects initialized */
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
"Table [%4.4s: %-8.8s] (id %.2X) - %4u Objects with %3u Devices, "
"%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n",
table->signature, table->oem_table_id, owner_id,
info.object_count, info.device_count,
info.op_region_count, info.method_count,
info.serial_method_count,
info.non_serial_method_count,
info.serialized_method_count));
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n",
info.method_count, info.op_region_count));
return_ACPI_STATUS(AE_OK);
}
| linux-master | drivers/acpi/acpica/dsinit.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: nspredef - Validation of ACPI predefined methods and objects
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#define ACPI_CREATE_PREDEFINED_TABLE
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acpredef.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nspredef")
/*******************************************************************************
*
* This module validates predefined ACPI objects that appear in the namespace,
* at the time they are evaluated (via acpi_evaluate_object). The purpose of this
* validation is to detect problems with BIOS-exposed predefined ACPI objects
* before the results are returned to the ACPI-related drivers.
*
* There are several areas that are validated:
*
* 1) The number of input arguments as defined by the method/object in the
* ASL is validated against the ACPI specification.
* 2) The type of the return object (if any) is validated against the ACPI
* specification.
* 3) For returned package objects, the count of package elements is
* validated, as well as the type of each package element. Nested
* packages are supported.
*
* For any problems found, a warning message is issued.
*
******************************************************************************/
/* Local prototypes */
static acpi_status
acpi_ns_check_reference(struct acpi_evaluate_info *info,
union acpi_operand_object *return_object);
static u32 acpi_ns_get_bitmapped_type(union acpi_operand_object *return_object);
/*******************************************************************************
*
* FUNCTION: acpi_ns_check_return_value
*
* PARAMETERS: node - Namespace node for the method/object
* info - Method execution information block
* user_param_count - Number of parameters actually passed
* return_status - Status from the object evaluation
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status
*
* DESCRIPTION: Check the value returned from a predefined name.
*
******************************************************************************/
acpi_status
acpi_ns_check_return_value(struct acpi_namespace_node *node,
struct acpi_evaluate_info *info,
u32 user_param_count,
acpi_status return_status,
union acpi_operand_object **return_object_ptr)
{
acpi_status status;
const union acpi_predefined_info *predefined;
ACPI_FUNCTION_TRACE(ns_check_return_value);
/* If not a predefined name, we cannot validate the return object */
predefined = info->predefined;
if (!predefined) {
return_ACPI_STATUS(AE_OK);
}
/*
* If the method failed or did not actually return an object, we cannot
* validate the return object
*/
if ((return_status != AE_OK) && (return_status != AE_CTRL_RETURN_VALUE)) {
return_ACPI_STATUS(AE_OK);
}
/*
* Return value validation and possible repair.
*
* 1) Don't perform return value validation/repair if this feature
* has been disabled via a global option.
*
* 2) We have a return value, but if one wasn't expected, just exit,
* this is not a problem. For example, if the "Implicit Return"
* feature is enabled, methods will always return a value.
*
* 3) If the return value can be of any type, then we cannot perform
* any validation, just exit.
*/
if (acpi_gbl_disable_auto_repair ||
(!predefined->info.expected_btypes) ||
(predefined->info.expected_btypes == ACPI_RTYPE_ALL)) {
return_ACPI_STATUS(AE_OK);
}
/*
* Check that the type of the main return object is what is expected
* for this predefined name
*/
status = acpi_ns_check_object_type(info, return_object_ptr,
predefined->info.expected_btypes,
ACPI_NOT_PACKAGE_ELEMENT);
if (ACPI_FAILURE(status)) {
goto exit;
}
/*
*
* 4) If there is no return value and it is optional, just return
* AE_OK (_WAK).
*/
if (!(*return_object_ptr)) {
goto exit;
}
/*
* For returned Package objects, check the type of all sub-objects.
* Note: Package may have been newly created by call above.
*/
if ((*return_object_ptr)->common.type == ACPI_TYPE_PACKAGE) {
info->parent_package = *return_object_ptr;
status = acpi_ns_check_package(info, return_object_ptr);
if (ACPI_FAILURE(status)) {
/* We might be able to fix some errors */
if ((status != AE_AML_OPERAND_TYPE) &&
(status != AE_AML_OPERAND_VALUE)) {
goto exit;
}
}
}
/*
* The return object was OK, or it was successfully repaired above.
* Now make some additional checks such as verifying that package
* objects are sorted correctly (if required) or buffer objects have
* the correct data width (bytes vs. dwords). These repairs are
* performed on a per-name basis, i.e., the code is specific to
* particular predefined names.
*/
status = acpi_ns_complex_repairs(info, node, status, return_object_ptr);
exit:
/*
* If the object validation failed or if we successfully repaired one
* or more objects, mark the parent node to suppress further warning
* messages during the next evaluation of the same method/object.
*/
if (ACPI_FAILURE(status) || (info->return_flags & ACPI_OBJECT_REPAIRED)) {
node->flags |= ANOBJ_EVALUATED;
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_check_object_type
*
* PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
* expected_btypes - Bitmap of expected return type(s)
* package_index - Index of object within parent package (if
* applicable - ACPI_NOT_PACKAGE_ELEMENT
* otherwise)
*
* RETURN: Status
*
* DESCRIPTION: Check the type of the return object against the expected object
* type(s). Use of Btype allows multiple expected object types.
*
******************************************************************************/
acpi_status
acpi_ns_check_object_type(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr,
u32 expected_btypes, u32 package_index)
{
union acpi_operand_object *return_object = *return_object_ptr;
acpi_status status = AE_OK;
char type_buffer[96]; /* Room for 10 types */
/* A Namespace node should not get here, but make sure */
if (return_object &&
ACPI_GET_DESCRIPTOR_TYPE(return_object) == ACPI_DESC_TYPE_NAMED) {
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
info->node_flags,
"Invalid return type - Found a Namespace node [%4.4s] type %s",
return_object->node.name.ascii,
acpi_ut_get_type_name(return_object->node.
type)));
return (AE_AML_OPERAND_TYPE);
}
/*
* Convert the object type (ACPI_TYPE_xxx) to a bitmapped object type.
* The bitmapped type allows multiple possible return types.
*
* Note, the cases below must handle all of the possible types returned
* from all of the predefined names (including elements of returned
* packages)
*/
info->return_btype = acpi_ns_get_bitmapped_type(return_object);
if (info->return_btype == ACPI_RTYPE_ANY) {
/* Not one of the supported objects, must be incorrect */
goto type_error_exit;
}
/* For reference objects, check that the reference type is correct */
if ((info->return_btype & expected_btypes) == ACPI_RTYPE_REFERENCE) {
status = acpi_ns_check_reference(info, return_object);
return (status);
}
/* Attempt simple repair of the returned object if necessary */
status = acpi_ns_simple_repair(info, expected_btypes,
package_index, return_object_ptr);
if (ACPI_SUCCESS(status)) {
return (AE_OK); /* Successful repair */
}
type_error_exit:
/* Create a string with all expected types for this predefined object */
acpi_ut_get_expected_return_types(type_buffer, expected_btypes);
if (!return_object) {
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
info->node_flags,
"Expected return object of type %s",
type_buffer));
} else if (package_index == ACPI_NOT_PACKAGE_ELEMENT) {
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
info->node_flags,
"Return type mismatch - found %s, expected %s",
acpi_ut_get_object_type_name
(return_object), type_buffer));
} else {
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
info->node_flags,
"Return Package type mismatch at index %u - "
"found %s, expected %s", package_index,
acpi_ut_get_object_type_name
(return_object), type_buffer));
}
return (AE_AML_OPERAND_TYPE);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_check_reference
*
* PARAMETERS: info - Method execution information block
* return_object - Object returned from the evaluation of a
* method or object
*
* RETURN: Status
*
* DESCRIPTION: Check a returned reference object for the correct reference
* type. The only reference type that can be returned from a
* predefined method is a named reference. All others are invalid.
*
******************************************************************************/
static acpi_status
acpi_ns_check_reference(struct acpi_evaluate_info *info,
union acpi_operand_object *return_object)
{
/*
* Check the reference object for the correct reference type (opcode).
* The only type of reference that can be converted to a union acpi_object is
* a reference to a named object (reference class: NAME)
*/
if (return_object->reference.class == ACPI_REFCLASS_NAME) {
return (AE_OK);
}
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags,
"Return type mismatch - unexpected reference object type [%s] %2.2X",
acpi_ut_get_reference_name(return_object),
return_object->reference.class));
return (AE_AML_OPERAND_TYPE);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_get_bitmapped_type
*
* PARAMETERS: return_object - Object returned from method/obj evaluation
*
* RETURN: Object return type. ACPI_RTYPE_ANY indicates that the object
* type is not supported. ACPI_RTYPE_NONE indicates that no
* object was returned (return_object is NULL).
*
* DESCRIPTION: Convert object type into a bitmapped object return type.
*
******************************************************************************/
static u32 acpi_ns_get_bitmapped_type(union acpi_operand_object *return_object)
{
u32 return_btype;
if (!return_object) {
return (ACPI_RTYPE_NONE);
}
/* Map acpi_object_type to internal bitmapped type */
switch (return_object->common.type) {
case ACPI_TYPE_INTEGER:
return_btype = ACPI_RTYPE_INTEGER;
break;
case ACPI_TYPE_BUFFER:
return_btype = ACPI_RTYPE_BUFFER;
break;
case ACPI_TYPE_STRING:
return_btype = ACPI_RTYPE_STRING;
break;
case ACPI_TYPE_PACKAGE:
return_btype = ACPI_RTYPE_PACKAGE;
break;
case ACPI_TYPE_LOCAL_REFERENCE:
return_btype = ACPI_RTYPE_REFERENCE;
break;
default:
/* Not one of the supported objects, must be incorrect */
return_btype = ACPI_RTYPE_ANY;
break;
}
return (return_btype);
}
| linux-master | drivers/acpi/acpica/nspredef.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: dsfield - Dispatcher field routines
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "amlcode.h"
#include "acdispat.h"
#include "acinterp.h"
#include "acnamesp.h"
#include "acparser.h"
#ifdef ACPI_EXEC_APP
#include "aecommon.h"
#endif
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dsfield")
/* Local prototypes */
#ifdef ACPI_ASL_COMPILER
#include "acdisasm.h"
static acpi_status
acpi_ds_create_external_region(acpi_status lookup_status,
union acpi_parse_object *op,
char *path,
struct acpi_walk_state *walk_state,
struct acpi_namespace_node **node);
#endif
static acpi_status
acpi_ds_get_field_names(struct acpi_create_field_info *info,
struct acpi_walk_state *walk_state,
union acpi_parse_object *arg);
#ifdef ACPI_ASL_COMPILER
/*******************************************************************************
*
* FUNCTION: acpi_ds_create_external_region (iASL Disassembler only)
*
* PARAMETERS: lookup_status - Status from ns_lookup operation
* op - Op containing the Field definition and args
* path - Pathname of the region
* ` walk_state - Current method state
* node - Where the new region node is returned
*
* RETURN: Status
*
* DESCRIPTION: Add region to the external list if NOT_FOUND. Create a new
* region node/object.
*
******************************************************************************/
static acpi_status
acpi_ds_create_external_region(acpi_status lookup_status,
union acpi_parse_object *op,
char *path,
struct acpi_walk_state *walk_state,
struct acpi_namespace_node **node)
{
acpi_status status;
union acpi_operand_object *obj_desc;
if (lookup_status != AE_NOT_FOUND) {
return (lookup_status);
}
/*
* Table disassembly:
* operation_region not found. Generate an External for it, and
* insert the name into the namespace.
*/
acpi_dm_add_op_to_external_list(op, path, ACPI_TYPE_REGION, 0, 0);
status = acpi_ns_lookup(walk_state->scope_info, path, ACPI_TYPE_REGION,
ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT,
walk_state, node);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Must create and install a region object for the new node */
obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION);
if (!obj_desc) {
return (AE_NO_MEMORY);
}
obj_desc->region.node = *node;
status = acpi_ns_attach_object(*node, obj_desc, ACPI_TYPE_REGION);
return (status);
}
#endif
/*******************************************************************************
*
* FUNCTION: acpi_ds_create_buffer_field
*
* PARAMETERS: op - Current parse op (create_XXField)
* walk_state - Current state
*
* RETURN: Status
*
* DESCRIPTION: Execute the create_field operators:
* create_bit_field_op,
* create_byte_field_op,
* create_word_field_op,
* create_dword_field_op,
* create_qword_field_op,
* create_field_op (all of which define a field in a buffer)
*
******************************************************************************/
acpi_status
acpi_ds_create_buffer_field(union acpi_parse_object *op,
struct acpi_walk_state *walk_state)
{
union acpi_parse_object *arg;
struct acpi_namespace_node *node;
acpi_status status;
union acpi_operand_object *obj_desc;
union acpi_operand_object *second_desc = NULL;
u32 flags;
ACPI_FUNCTION_TRACE(ds_create_buffer_field);
/*
* Get the name_string argument (name of the new buffer_field)
*/
if (op->common.aml_opcode == AML_CREATE_FIELD_OP) {
/* For create_field, name is the 4th argument */
arg = acpi_ps_get_arg(op, 3);
} else {
/* For all other create_XXXField operators, name is the 3rd argument */
arg = acpi_ps_get_arg(op, 2);
}
if (!arg) {
return_ACPI_STATUS(AE_AML_NO_OPERAND);
}
if (walk_state->deferred_node) {
node = walk_state->deferred_node;
} else {
/* Execute flag should always be set when this function is entered */
if (!(walk_state->parse_flags & ACPI_PARSE_EXECUTE)) {
ACPI_ERROR((AE_INFO, "Parse execute mode is not set"));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
/* Creating new namespace node, should not already exist */
flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
ACPI_NS_ERROR_IF_FOUND;
/*
* Mark node temporary if we are executing a normal control
* method. (Don't mark if this is a module-level code method)
*/
if (walk_state->method_node &&
!(walk_state->parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
flags |= ACPI_NS_TEMPORARY;
}
/* Enter the name_string into the namespace */
status = acpi_ns_lookup(walk_state->scope_info,
arg->common.value.string, ACPI_TYPE_ANY,
ACPI_IMODE_LOAD_PASS1, flags,
walk_state, &node);
if ((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE)
&& status == AE_ALREADY_EXISTS) {
status = AE_OK;
} else if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
arg->common.value.string, status);
return_ACPI_STATUS(status);
}
}
/*
* We could put the returned object (Node) on the object stack for later,
* but for now, we will put it in the "op" object that the parser uses,
* so we can get it again at the end of this scope.
*/
op->common.node = node;
/*
* If there is no object attached to the node, this node was just created
* and we need to create the field object. Otherwise, this was a lookup
* of an existing node and we don't want to create the field object again.
*/
obj_desc = acpi_ns_get_attached_object(node);
if (obj_desc) {
return_ACPI_STATUS(AE_OK);
}
/*
* The Field definition is not fully parsed at this time.
* (We must save the address of the AML for the buffer and index operands)
*/
/* Create the buffer field object */
obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER_FIELD);
if (!obj_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/*
* Remember location in AML stream of the field unit opcode and operands
* -- since the buffer and index operands must be evaluated.
*/
second_desc = obj_desc->common.next_object;
second_desc->extra.aml_start = op->named.data;
second_desc->extra.aml_length = op->named.length;
obj_desc->buffer_field.node = node;
/* Attach constructed field descriptors to parent node */
status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_BUFFER_FIELD);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
cleanup:
/* Remove local reference to the object */
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_get_field_names
*
* PARAMETERS: info - create_field info structure
* walk_state - Current method state
* arg - First parser arg for the field name list
*
* RETURN: Status
*
* DESCRIPTION: Process all named fields in a field declaration. Names are
* entered into the namespace.
*
******************************************************************************/
static acpi_status
acpi_ds_get_field_names(struct acpi_create_field_info *info,
struct acpi_walk_state *walk_state,
union acpi_parse_object *arg)
{
acpi_status status;
u64 position;
union acpi_parse_object *child;
#ifdef ACPI_EXEC_APP
union acpi_operand_object *result_desc;
union acpi_operand_object *obj_desc;
char *name_path;
#endif
ACPI_FUNCTION_TRACE_PTR(ds_get_field_names, info);
/* First field starts at bit zero */
info->field_bit_position = 0;
/* Process all elements in the field list (of parse nodes) */
while (arg) {
/*
* Four types of field elements are handled:
* 1) name - Enters a new named field into the namespace
* 2) offset - specifies a bit offset
* 3) access_as - changes the access mode/attributes
* 4) connection - Associate a resource template with the field
*/
switch (arg->common.aml_opcode) {
case AML_INT_RESERVEDFIELD_OP:
position = (u64)info->field_bit_position +
(u64)arg->common.value.size;
if (position > ACPI_UINT32_MAX) {
ACPI_ERROR((AE_INFO,
"Bit offset within field too large (> 0xFFFFFFFF)"));
return_ACPI_STATUS(AE_SUPPORT);
}
info->field_bit_position = (u32) position;
break;
case AML_INT_ACCESSFIELD_OP:
case AML_INT_EXTACCESSFIELD_OP:
/*
* Get new access_type, access_attribute, and access_length fields
* -- to be used for all field units that follow, until the
* end-of-field or another access_as keyword is encountered.
* NOTE. These three bytes are encoded in the integer value
* of the parseop for convenience.
*
* In field_flags, preserve the flag bits other than the
* ACCESS_TYPE bits.
*/
/* access_type (byte_acc, word_acc, etc.) */
info->field_flags = (u8)
((info->
field_flags & ~(AML_FIELD_ACCESS_TYPE_MASK)) |
((u8)((u32)(arg->common.value.integer & 0x07))));
/* access_attribute (attrib_quick, attrib_byte, etc.) */
info->attribute = (u8)
((arg->common.value.integer >> 8) & 0xFF);
/* access_length (for serial/buffer protocols) */
info->access_length = (u8)
((arg->common.value.integer >> 16) & 0xFF);
break;
case AML_INT_CONNECTION_OP:
/*
* Clear any previous connection. New connection is used for all
* fields that follow, similar to access_as
*/
info->resource_buffer = NULL;
info->connection_node = NULL;
info->pin_number_index = 0;
/*
* A Connection() is either an actual resource descriptor (buffer)
* or a named reference to a resource template
*/
child = arg->common.value.arg;
if (child->common.aml_opcode == AML_INT_BYTELIST_OP) {
info->resource_buffer = child->named.data;
info->resource_length =
(u16)child->named.value.integer;
} else {
/* Lookup the Connection() namepath, it should already exist */
status = acpi_ns_lookup(walk_state->scope_info,
child->common.value.
name, ACPI_TYPE_ANY,
ACPI_IMODE_EXECUTE,
ACPI_NS_DONT_OPEN_SCOPE,
walk_state,
&info->connection_node);
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->
scope_info,
child->common.
value.name,
status);
return_ACPI_STATUS(status);
}
}
break;
case AML_INT_NAMEDFIELD_OP:
/* Lookup the name, it should already exist */
status = acpi_ns_lookup(walk_state->scope_info,
(char *)&arg->named.name,
info->field_type,
ACPI_IMODE_EXECUTE,
ACPI_NS_DONT_OPEN_SCOPE,
walk_state, &info->field_node);
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
(char *)&arg->named.name,
status);
return_ACPI_STATUS(status);
} else {
arg->common.node = info->field_node;
info->field_bit_length = arg->common.value.size;
/*
* If there is no object attached to the node, this node was
* just created and we need to create the field object.
* Otherwise, this was a lookup of an existing node and we
* don't want to create the field object again.
*/
if (!acpi_ns_get_attached_object
(info->field_node)) {
status = acpi_ex_prep_field_value(info);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
#ifdef ACPI_EXEC_APP
name_path =
acpi_ns_get_external_pathname(info->
field_node);
if (ACPI_SUCCESS
(ae_lookup_init_file_entry
(name_path, &obj_desc))) {
acpi_ex_write_data_to_field
(obj_desc,
acpi_ns_get_attached_object
(info->field_node),
&result_desc);
acpi_ut_remove_reference
(obj_desc);
}
ACPI_FREE(name_path);
#endif
}
}
/* Keep track of bit position for the next field */
position = (u64)info->field_bit_position +
(u64)arg->common.value.size;
if (position > ACPI_UINT32_MAX) {
ACPI_ERROR((AE_INFO,
"Field [%4.4s] bit offset too large (> 0xFFFFFFFF)",
ACPI_CAST_PTR(char,
&info->field_node->
name)));
return_ACPI_STATUS(AE_SUPPORT);
}
info->field_bit_position += info->field_bit_length;
info->pin_number_index++; /* Index relative to previous Connection() */
break;
default:
ACPI_ERROR((AE_INFO,
"Invalid opcode in field list: 0x%X",
arg->common.aml_opcode));
return_ACPI_STATUS(AE_AML_BAD_OPCODE);
}
arg = arg->common.next;
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_create_field
*
* PARAMETERS: op - Op containing the Field definition and args
* region_node - Object for the containing Operation Region
* ` walk_state - Current method state
*
* RETURN: Status
*
* DESCRIPTION: Create a new field in the specified operation region
*
******************************************************************************/
acpi_status
acpi_ds_create_field(union acpi_parse_object *op,
struct acpi_namespace_node *region_node,
struct acpi_walk_state *walk_state)
{
acpi_status status;
union acpi_parse_object *arg;
struct acpi_create_field_info info;
ACPI_FUNCTION_TRACE_PTR(ds_create_field, op);
/* First arg is the name of the parent op_region (must already exist) */
arg = op->common.value.arg;
if (!region_node) {
status =
acpi_ns_lookup(walk_state->scope_info,
arg->common.value.name, ACPI_TYPE_REGION,
ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
walk_state, ®ion_node);
#ifdef ACPI_ASL_COMPILER
status = acpi_ds_create_external_region(status, arg,
arg->common.value.name,
walk_state,
®ion_node);
#endif
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
arg->common.value.name, status);
return_ACPI_STATUS(status);
}
}
memset(&info, 0, sizeof(struct acpi_create_field_info));
/* Second arg is the field flags */
arg = arg->common.next;
info.field_flags = (u8) arg->common.value.integer;
info.attribute = 0;
/* Each remaining arg is a Named Field */
info.field_type = ACPI_TYPE_LOCAL_REGION_FIELD;
info.region_node = region_node;
status = acpi_ds_get_field_names(&info, walk_state, arg->common.next);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (info.region_node->object->region.space_id ==
ACPI_ADR_SPACE_PLATFORM_COMM) {
region_node->object->field.internal_pcc_buffer =
ACPI_ALLOCATE_ZEROED(info.region_node->object->region.
length);
if (!region_node->object->field.internal_pcc_buffer) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_init_field_objects
*
* PARAMETERS: op - Op containing the Field definition and args
* ` walk_state - Current method state
*
* RETURN: Status
*
* DESCRIPTION: For each "Field Unit" name in the argument list that is
* part of the field declaration, enter the name into the
* namespace.
*
******************************************************************************/
acpi_status
acpi_ds_init_field_objects(union acpi_parse_object *op,
struct acpi_walk_state *walk_state)
{
acpi_status status;
union acpi_parse_object *arg = NULL;
struct acpi_namespace_node *node;
u8 type = 0;
u32 flags;
ACPI_FUNCTION_TRACE_PTR(ds_init_field_objects, op);
/* Execute flag should always be set when this function is entered */
if (!(walk_state->parse_flags & ACPI_PARSE_EXECUTE)) {
if (walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP) {
/* bank_field Op is deferred, just return OK */
return_ACPI_STATUS(AE_OK);
}
ACPI_ERROR((AE_INFO, "Parse deferred mode is not set"));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
/*
* Get the field_list argument for this opcode. This is the start of the
* list of field elements.
*/
switch (walk_state->opcode) {
case AML_FIELD_OP:
arg = acpi_ps_get_arg(op, 2);
type = ACPI_TYPE_LOCAL_REGION_FIELD;
break;
case AML_BANK_FIELD_OP:
arg = acpi_ps_get_arg(op, 4);
type = ACPI_TYPE_LOCAL_BANK_FIELD;
break;
case AML_INDEX_FIELD_OP:
arg = acpi_ps_get_arg(op, 3);
type = ACPI_TYPE_LOCAL_INDEX_FIELD;
break;
default:
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Creating new namespace node(s), should not already exist */
flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
ACPI_NS_ERROR_IF_FOUND;
/*
* Mark node(s) temporary if we are executing a normal control
* method. (Don't mark if this is a module-level code method)
*/
if (walk_state->method_node &&
!(walk_state->parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
flags |= ACPI_NS_TEMPORARY;
}
#ifdef ACPI_EXEC_APP
flags |= ACPI_NS_OVERRIDE_IF_FOUND;
#endif
/*
* Walk the list of entries in the field_list
* Note: field_list can be of zero length. In this case, Arg will be NULL.
*/
while (arg) {
/*
* Ignore OFFSET/ACCESSAS/CONNECTION terms here; we are only interested
* in the field names in order to enter them into the namespace.
*/
if (arg->common.aml_opcode == AML_INT_NAMEDFIELD_OP) {
status = acpi_ns_lookup(walk_state->scope_info,
(char *)&arg->named.name, type,
ACPI_IMODE_LOAD_PASS1, flags,
walk_state, &node);
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
(char *)&arg->named.name,
status);
if (status != AE_ALREADY_EXISTS) {
return_ACPI_STATUS(status);
}
/* Name already exists, just ignore this error */
}
arg->common.node = node;
}
/* Get the next field element in the list */
arg = arg->common.next;
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_create_bank_field
*
* PARAMETERS: op - Op containing the Field definition and args
* region_node - Object for the containing Operation Region
* walk_state - Current method state
*
* RETURN: Status
*
* DESCRIPTION: Create a new bank field in the specified operation region
*
******************************************************************************/
acpi_status
acpi_ds_create_bank_field(union acpi_parse_object *op,
struct acpi_namespace_node *region_node,
struct acpi_walk_state *walk_state)
{
acpi_status status;
union acpi_parse_object *arg;
struct acpi_create_field_info info;
ACPI_FUNCTION_TRACE_PTR(ds_create_bank_field, op);
/* First arg is the name of the parent op_region (must already exist) */
arg = op->common.value.arg;
if (!region_node) {
status =
acpi_ns_lookup(walk_state->scope_info,
arg->common.value.name, ACPI_TYPE_REGION,
ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
walk_state, ®ion_node);
#ifdef ACPI_ASL_COMPILER
status = acpi_ds_create_external_region(status, arg,
arg->common.value.name,
walk_state,
®ion_node);
#endif
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
arg->common.value.name, status);
return_ACPI_STATUS(status);
}
}
/* Second arg is the Bank Register (Field) (must already exist) */
arg = arg->common.next;
status =
acpi_ns_lookup(walk_state->scope_info, arg->common.value.string,
ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
ACPI_NS_SEARCH_PARENT, walk_state,
&info.register_node);
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
arg->common.value.string, status);
return_ACPI_STATUS(status);
}
/*
* Third arg is the bank_value
* This arg is a term_arg, not a constant
* It will be evaluated later, by acpi_ds_eval_bank_field_operands
*/
arg = arg->common.next;
/* Fourth arg is the field flags */
arg = arg->common.next;
info.field_flags = (u8) arg->common.value.integer;
/* Each remaining arg is a Named Field */
info.field_type = ACPI_TYPE_LOCAL_BANK_FIELD;
info.region_node = region_node;
/*
* Use Info.data_register_node to store bank_field Op
* It's safe because data_register_node will never be used when create
* bank field \we store aml_start and aml_length in the bank_field Op for
* late evaluation. Used in acpi_ex_prep_field_value(Info)
*
* TBD: Or, should we add a field in struct acpi_create_field_info, like
* "void *ParentOp"?
*/
info.data_register_node = (struct acpi_namespace_node *)op;
status = acpi_ds_get_field_names(&info, walk_state, arg->common.next);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_create_index_field
*
* PARAMETERS: op - Op containing the Field definition and args
* region_node - Object for the containing Operation Region
* ` walk_state - Current method state
*
* RETURN: Status
*
* DESCRIPTION: Create a new index field in the specified operation region
*
******************************************************************************/
acpi_status
acpi_ds_create_index_field(union acpi_parse_object *op,
struct acpi_namespace_node *region_node,
struct acpi_walk_state *walk_state)
{
acpi_status status;
union acpi_parse_object *arg;
struct acpi_create_field_info info;
ACPI_FUNCTION_TRACE_PTR(ds_create_index_field, op);
/* First arg is the name of the Index register (must already exist) */
arg = op->common.value.arg;
status =
acpi_ns_lookup(walk_state->scope_info, arg->common.value.string,
ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
ACPI_NS_SEARCH_PARENT, walk_state,
&info.register_node);
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
arg->common.value.string, status);
return_ACPI_STATUS(status);
}
/* Second arg is the data register (must already exist) */
arg = arg->common.next;
status =
acpi_ns_lookup(walk_state->scope_info, arg->common.value.string,
ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
ACPI_NS_SEARCH_PARENT, walk_state,
&info.data_register_node);
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
arg->common.value.string, status);
return_ACPI_STATUS(status);
}
/* Next arg is the field flags */
arg = arg->common.next;
info.field_flags = (u8) arg->common.value.integer;
/* Each remaining arg is a Named Field */
info.field_type = ACPI_TYPE_LOCAL_INDEX_FIELD;
info.region_node = region_node;
status = acpi_ds_get_field_names(&info, walk_state, arg->common.next);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/dsfield.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: utbuffer - Buffer dump routines
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utbuffer")
/*******************************************************************************
*
* FUNCTION: acpi_ut_dump_buffer
*
* PARAMETERS: buffer - Buffer to dump
* count - Amount to dump, in bytes
* display - BYTE, WORD, DWORD, or QWORD display:
* DB_BYTE_DISPLAY
* DB_WORD_DISPLAY
* DB_DWORD_DISPLAY
* DB_QWORD_DISPLAY
* base_offset - Beginning buffer offset (display only)
*
* RETURN: None
*
* DESCRIPTION: Generic dump buffer in both hex and ascii.
*
******************************************************************************/
void acpi_ut_dump_buffer(u8 *buffer, u32 count, u32 display, u32 base_offset)
{
u32 i = 0;
u32 j;
u32 temp32;
u8 buf_char;
u32 display_data_only = display & DB_DISPLAY_DATA_ONLY;
display &= ~DB_DISPLAY_DATA_ONLY;
if (!buffer) {
acpi_os_printf("Null Buffer Pointer in DumpBuffer!\n");
return;
}
if ((count < 4) || (count & 0x01)) {
display = DB_BYTE_DISPLAY;
}
/* Nasty little dump buffer routine! */
while (i < count) {
/* Print current offset */
if (!display_data_only) {
acpi_os_printf("%8.4X: ", (base_offset + i));
}
/* Print 16 hex chars */
for (j = 0; j < 16;) {
if (i + j >= count) {
/* Dump fill spaces */
acpi_os_printf("%*s", ((display * 2) + 1), " ");
j += display;
continue;
}
switch (display) {
case DB_BYTE_DISPLAY:
default: /* Default is BYTE display */
acpi_os_printf("%02X ",
buffer[(acpi_size)i + j]);
break;
case DB_WORD_DISPLAY:
ACPI_MOVE_16_TO_32(&temp32,
&buffer[(acpi_size)i + j]);
acpi_os_printf("%04X ", temp32);
break;
case DB_DWORD_DISPLAY:
ACPI_MOVE_32_TO_32(&temp32,
&buffer[(acpi_size)i + j]);
acpi_os_printf("%08X ", temp32);
break;
case DB_QWORD_DISPLAY:
ACPI_MOVE_32_TO_32(&temp32,
&buffer[(acpi_size)i + j]);
acpi_os_printf("%08X", temp32);
ACPI_MOVE_32_TO_32(&temp32,
&buffer[(acpi_size)i + j +
4]);
acpi_os_printf("%08X ", temp32);
break;
}
j += display;
}
/*
* Print the ASCII equivalent characters but watch out for the bad
* unprintable ones (printable chars are 0x20 through 0x7E)
*/
if (!display_data_only) {
acpi_os_printf(" ");
for (j = 0; j < 16; j++) {
if (i + j >= count) {
acpi_os_printf("\n");
return;
}
/*
* Add comment characters so rest of line is ignored when
* compiled
*/
if (j == 0) {
acpi_os_printf("// ");
}
buf_char = buffer[(acpi_size)i + j];
if (isprint(buf_char)) {
acpi_os_printf("%c", buf_char);
} else {
acpi_os_printf(".");
}
}
/* Done with that line. */
acpi_os_printf("\n");
}
i += 16;
}
return;
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_debug_dump_buffer
*
* PARAMETERS: buffer - Buffer to dump
* count - Amount to dump, in bytes
* display - BYTE, WORD, DWORD, or QWORD display:
* DB_BYTE_DISPLAY
* DB_WORD_DISPLAY
* DB_DWORD_DISPLAY
* DB_QWORD_DISPLAY
* component_ID - Caller's component ID
*
* RETURN: None
*
* DESCRIPTION: Generic dump buffer in both hex and ascii.
*
******************************************************************************/
void
acpi_ut_debug_dump_buffer(u8 *buffer, u32 count, u32 display, u32 component_id)
{
/* Only dump the buffer if tracing is enabled */
if (!((ACPI_LV_TABLES & acpi_dbg_level) &&
(component_id & acpi_dbg_layer))) {
return;
}
acpi_ut_dump_buffer(buffer, count, display, 0);
}
#ifdef ACPI_APPLICATION
/*******************************************************************************
*
* FUNCTION: acpi_ut_dump_buffer_to_file
*
* PARAMETERS: file - File descriptor
* buffer - Buffer to dump
* count - Amount to dump, in bytes
* display - BYTE, WORD, DWORD, or QWORD display:
* DB_BYTE_DISPLAY
* DB_WORD_DISPLAY
* DB_DWORD_DISPLAY
* DB_QWORD_DISPLAY
* base_offset - Beginning buffer offset (display only)
*
* RETURN: None
*
* DESCRIPTION: Generic dump buffer in both hex and ascii to a file.
*
******************************************************************************/
void
acpi_ut_dump_buffer_to_file(ACPI_FILE file,
u8 *buffer, u32 count, u32 display, u32 base_offset)
{
u32 i = 0;
u32 j;
u32 temp32;
u8 buf_char;
if (!buffer) {
fprintf(file, "Null Buffer Pointer in DumpBuffer!\n");
return;
}
if ((count < 4) || (count & 0x01)) {
display = DB_BYTE_DISPLAY;
}
/* Nasty little dump buffer routine! */
while (i < count) {
/* Print current offset */
fprintf(file, "%8.4X: ", (base_offset + i));
/* Print 16 hex chars */
for (j = 0; j < 16;) {
if (i + j >= count) {
/* Dump fill spaces */
fprintf(file, "%*s", ((display * 2) + 1), " ");
j += display;
continue;
}
switch (display) {
case DB_BYTE_DISPLAY:
default: /* Default is BYTE display */
fprintf(file, "%02X ",
buffer[(acpi_size)i + j]);
break;
case DB_WORD_DISPLAY:
ACPI_MOVE_16_TO_32(&temp32,
&buffer[(acpi_size)i + j]);
fprintf(file, "%04X ", temp32);
break;
case DB_DWORD_DISPLAY:
ACPI_MOVE_32_TO_32(&temp32,
&buffer[(acpi_size)i + j]);
fprintf(file, "%08X ", temp32);
break;
case DB_QWORD_DISPLAY:
ACPI_MOVE_32_TO_32(&temp32,
&buffer[(acpi_size)i + j]);
fprintf(file, "%08X", temp32);
ACPI_MOVE_32_TO_32(&temp32,
&buffer[(acpi_size)i + j +
4]);
fprintf(file, "%08X ", temp32);
break;
}
j += display;
}
/*
* Print the ASCII equivalent characters but watch out for the bad
* unprintable ones (printable chars are 0x20 through 0x7E)
*/
fprintf(file, " ");
for (j = 0; j < 16; j++) {
if (i + j >= count) {
fprintf(file, "\n");
return;
}
buf_char = buffer[(acpi_size)i + j];
if (isprint(buf_char)) {
fprintf(file, "%c", buf_char);
} else {
fprintf(file, ".");
}
}
/* Done with that line. */
fprintf(file, "\n");
i += 16;
}
return;
}
#endif
| linux-master | drivers/acpi/acpica/utbuffer.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: nsutils - Utilities for accessing ACPI namespace, accessing
* parents and siblings and Scope manipulation
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "amlcode.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsutils")
/* Local prototypes */
#ifdef ACPI_OBSOLETE_FUNCTIONS
acpi_name acpi_ns_find_parent_name(struct acpi_namespace_node *node_to_search);
#endif
/*******************************************************************************
*
* FUNCTION: acpi_ns_print_node_pathname
*
* PARAMETERS: node - Object
* message - Prefix message
*
* DESCRIPTION: Print an object's full namespace pathname
* Manages allocation/freeing of a pathname buffer
*
******************************************************************************/
void
acpi_ns_print_node_pathname(struct acpi_namespace_node *node,
const char *message)
{
struct acpi_buffer buffer;
acpi_status status;
if (!node) {
acpi_os_printf("[NULL NAME]");
return;
}
/* Convert handle to full pathname and print it (with supplied message) */
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_ns_handle_to_pathname(node, &buffer, TRUE);
if (ACPI_SUCCESS(status)) {
if (message) {
acpi_os_printf("%s ", message);
}
acpi_os_printf("%s", (char *)buffer.pointer);
ACPI_FREE(buffer.pointer);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_get_type
*
* PARAMETERS: node - Parent Node to be examined
*
* RETURN: Type field from Node whose handle is passed
*
* DESCRIPTION: Return the type of a Namespace node
*
******************************************************************************/
acpi_object_type acpi_ns_get_type(struct acpi_namespace_node * node)
{
ACPI_FUNCTION_TRACE(ns_get_type);
if (!node) {
ACPI_WARNING((AE_INFO, "Null Node parameter"));
return_UINT8(ACPI_TYPE_ANY);
}
return_UINT8(node->type);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_local
*
* PARAMETERS: type - A namespace object type
*
* RETURN: LOCAL if names must be found locally in objects of the
* passed type, 0 if enclosing scopes should be searched
*
* DESCRIPTION: Returns scope rule for the given object type.
*
******************************************************************************/
u32 acpi_ns_local(acpi_object_type type)
{
ACPI_FUNCTION_TRACE(ns_local);
if (!acpi_ut_valid_object_type(type)) {
/* Type code out of range */
ACPI_WARNING((AE_INFO, "Invalid Object Type 0x%X", type));
return_UINT32(ACPI_NS_NORMAL);
}
return_UINT32(acpi_gbl_ns_properties[type] & ACPI_NS_LOCAL);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_get_internal_name_length
*
* PARAMETERS: info - Info struct initialized with the
* external name pointer.
*
* RETURN: None
*
* DESCRIPTION: Calculate the length of the internal (AML) namestring
* corresponding to the external (ASL) namestring.
*
******************************************************************************/
void acpi_ns_get_internal_name_length(struct acpi_namestring_info *info)
{
const char *next_external_char;
u32 i;
ACPI_FUNCTION_ENTRY();
next_external_char = info->external_name;
info->num_carats = 0;
info->num_segments = 0;
info->fully_qualified = FALSE;
/*
* For the internal name, the required length is 4 bytes per segment,
* plus 1 each for root_prefix, multi_name_prefix_op, segment count,
* trailing null (which is not really needed, but no there's harm in
* putting it there)
*
* strlen() + 1 covers the first name_seg, which has no path separator
*/
if (ACPI_IS_ROOT_PREFIX(*next_external_char)) {
info->fully_qualified = TRUE;
next_external_char++;
/* Skip redundant root_prefix, like \\_SB.PCI0.SBRG.EC0 */
while (ACPI_IS_ROOT_PREFIX(*next_external_char)) {
next_external_char++;
}
} else {
/* Handle Carat prefixes */
while (ACPI_IS_PARENT_PREFIX(*next_external_char)) {
info->num_carats++;
next_external_char++;
}
}
/*
* Determine the number of ACPI name "segments" by counting the number of
* path separators within the string. Start with one segment since the
* segment count is [(# separators) + 1], and zero separators is ok.
*/
if (*next_external_char) {
info->num_segments = 1;
for (i = 0; next_external_char[i]; i++) {
if (ACPI_IS_PATH_SEPARATOR(next_external_char[i])) {
info->num_segments++;
}
}
}
info->length = (ACPI_NAMESEG_SIZE * info->num_segments) +
4 + info->num_carats;
info->next_external_char = next_external_char;
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_build_internal_name
*
* PARAMETERS: info - Info struct fully initialized
*
* RETURN: Status
*
* DESCRIPTION: Construct the internal (AML) namestring
* corresponding to the external (ASL) namestring.
*
******************************************************************************/
acpi_status acpi_ns_build_internal_name(struct acpi_namestring_info *info)
{
u32 num_segments = info->num_segments;
char *internal_name = info->internal_name;
const char *external_name = info->next_external_char;
char *result = NULL;
u32 i;
ACPI_FUNCTION_TRACE(ns_build_internal_name);
/* Setup the correct prefixes, counts, and pointers */
if (info->fully_qualified) {
internal_name[0] = AML_ROOT_PREFIX;
if (num_segments <= 1) {
result = &internal_name[1];
} else if (num_segments == 2) {
internal_name[1] = AML_DUAL_NAME_PREFIX;
result = &internal_name[2];
} else {
internal_name[1] = AML_MULTI_NAME_PREFIX;
internal_name[2] = (char)num_segments;
result = &internal_name[3];
}
} else {
/*
* Not fully qualified.
* Handle Carats first, then append the name segments
*/
i = 0;
if (info->num_carats) {
for (i = 0; i < info->num_carats; i++) {
internal_name[i] = AML_PARENT_PREFIX;
}
}
if (num_segments <= 1) {
result = &internal_name[i];
} else if (num_segments == 2) {
internal_name[i] = AML_DUAL_NAME_PREFIX;
result = &internal_name[(acpi_size)i + 1];
} else {
internal_name[i] = AML_MULTI_NAME_PREFIX;
internal_name[(acpi_size)i + 1] = (char)num_segments;
result = &internal_name[(acpi_size)i + 2];
}
}
/* Build the name (minus path separators) */
for (; num_segments; num_segments--) {
for (i = 0; i < ACPI_NAMESEG_SIZE; i++) {
if (ACPI_IS_PATH_SEPARATOR(*external_name) ||
(*external_name == 0)) {
/* Pad the segment with underscore(s) if segment is short */
result[i] = '_';
} else {
/* Convert the character to uppercase and save it */
result[i] = (char)toupper((int)*external_name);
external_name++;
}
}
/* Now we must have a path separator, or the pathname is bad */
if (!ACPI_IS_PATH_SEPARATOR(*external_name) &&
(*external_name != 0)) {
return_ACPI_STATUS(AE_BAD_PATHNAME);
}
/* Move on the next segment */
external_name++;
result += ACPI_NAMESEG_SIZE;
}
/* Terminate the string */
*result = 0;
if (info->fully_qualified) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Returning [%p] (abs) \"\\%s\"\n",
internal_name, internal_name));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Returning [%p] (rel) \"%s\"\n",
internal_name, internal_name));
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_internalize_name
*
* PARAMETERS: *external_name - External representation of name
* **Converted name - Where to return the resulting
* internal represention of the name
*
* RETURN: Status
*
* DESCRIPTION: Convert an external representation (e.g. "\_PR_.CPU0")
* to internal form (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30)
*
*******************************************************************************/
acpi_status
acpi_ns_internalize_name(const char *external_name, char **converted_name)
{
char *internal_name;
struct acpi_namestring_info info;
acpi_status status;
ACPI_FUNCTION_TRACE(ns_internalize_name);
if ((!external_name) || (*external_name == 0) || (!converted_name)) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Get the length of the new internal name */
info.external_name = external_name;
acpi_ns_get_internal_name_length(&info);
/* We need a segment to store the internal name */
internal_name = ACPI_ALLOCATE_ZEROED(info.length);
if (!internal_name) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Build the name */
info.internal_name = internal_name;
status = acpi_ns_build_internal_name(&info);
if (ACPI_FAILURE(status)) {
ACPI_FREE(internal_name);
return_ACPI_STATUS(status);
}
*converted_name = internal_name;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_externalize_name
*
* PARAMETERS: internal_name_length - Length of the internal name below
* internal_name - Internal representation of name
* converted_name_length - Where the length is returned
* converted_name - Where the resulting external name
* is returned
*
* RETURN: Status
*
* DESCRIPTION: Convert internal name (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30)
* to its external (printable) form (e.g. "\_PR_.CPU0")
*
******************************************************************************/
acpi_status
acpi_ns_externalize_name(u32 internal_name_length,
const char *internal_name,
u32 * converted_name_length, char **converted_name)
{
u32 names_index = 0;
u32 num_segments = 0;
u32 required_length;
u32 prefix_length = 0;
u32 i = 0;
u32 j = 0;
ACPI_FUNCTION_TRACE(ns_externalize_name);
if (!internal_name_length || !internal_name || !converted_name) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Check for a prefix (one '\' | one or more '^') */
switch (internal_name[0]) {
case AML_ROOT_PREFIX:
prefix_length = 1;
break;
case AML_PARENT_PREFIX:
for (i = 0; i < internal_name_length; i++) {
if (ACPI_IS_PARENT_PREFIX(internal_name[i])) {
prefix_length = i + 1;
} else {
break;
}
}
if (i == internal_name_length) {
prefix_length = i;
}
break;
default:
break;
}
/*
* Check for object names. Note that there could be 0-255 of these
* 4-byte elements.
*/
if (prefix_length < internal_name_length) {
switch (internal_name[prefix_length]) {
case AML_MULTI_NAME_PREFIX:
/* <count> 4-byte names */
names_index = prefix_length + 2;
num_segments = (u8)
internal_name[(acpi_size)prefix_length + 1];
break;
case AML_DUAL_NAME_PREFIX:
/* Two 4-byte names */
names_index = prefix_length + 1;
num_segments = 2;
break;
case 0:
/* null_name */
names_index = 0;
num_segments = 0;
break;
default:
/* one 4-byte name */
names_index = prefix_length;
num_segments = 1;
break;
}
}
/*
* Calculate the length of converted_name, which equals the length
* of the prefix, length of all object names, length of any required
* punctuation ('.') between object names, plus the NULL terminator.
*/
required_length = prefix_length + (4 * num_segments) +
((num_segments > 0) ? (num_segments - 1) : 0) + 1;
/*
* Check to see if we're still in bounds. If not, there's a problem
* with internal_name (invalid format).
*/
if (required_length > internal_name_length) {
ACPI_ERROR((AE_INFO, "Invalid internal name"));
return_ACPI_STATUS(AE_BAD_PATHNAME);
}
/* Build the converted_name */
*converted_name = ACPI_ALLOCATE_ZEROED(required_length);
if (!(*converted_name)) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
j = 0;
for (i = 0; i < prefix_length; i++) {
(*converted_name)[j++] = internal_name[i];
}
if (num_segments > 0) {
for (i = 0; i < num_segments; i++) {
if (i > 0) {
(*converted_name)[j++] = '.';
}
/* Copy and validate the 4-char name segment */
ACPI_COPY_NAMESEG(&(*converted_name)[j],
&internal_name[names_index]);
acpi_ut_repair_name(&(*converted_name)[j]);
j += ACPI_NAMESEG_SIZE;
names_index += ACPI_NAMESEG_SIZE;
}
}
if (converted_name_length) {
*converted_name_length = (u32) required_length;
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_validate_handle
*
* PARAMETERS: handle - Handle to be validated and typecast to a
* namespace node.
*
* RETURN: A pointer to a namespace node
*
* DESCRIPTION: Convert a namespace handle to a namespace node. Handles special
* cases for the root node.
*
* NOTE: Real integer handles would allow for more verification
* and keep all pointers within this subsystem - however this introduces
* more overhead and has not been necessary to this point. Drivers
* holding handles are typically notified before a node becomes invalid
* due to a table unload.
*
******************************************************************************/
struct acpi_namespace_node *acpi_ns_validate_handle(acpi_handle handle)
{
ACPI_FUNCTION_ENTRY();
/* Parameter validation */
if ((!handle) || (handle == ACPI_ROOT_OBJECT)) {
return (acpi_gbl_root_node);
}
/* We can at least attempt to verify the handle */
if (ACPI_GET_DESCRIPTOR_TYPE(handle) != ACPI_DESC_TYPE_NAMED) {
return (NULL);
}
return (ACPI_CAST_PTR(struct acpi_namespace_node, handle));
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_terminate
*
* PARAMETERS: none
*
* RETURN: none
*
* DESCRIPTION: free memory allocated for namespace and ACPI table storage.
*
******************************************************************************/
void acpi_ns_terminate(void)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ns_terminate);
/*
* Free the entire namespace -- all nodes and all objects
* attached to the nodes
*/
acpi_ns_delete_namespace_subtree(acpi_gbl_root_node);
/* Delete any objects attached to the root node */
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_VOID;
}
acpi_ns_delete_node(acpi_gbl_root_node);
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Namespace freed\n"));
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_opens_scope
*
* PARAMETERS: type - A valid namespace type
*
* RETURN: NEWSCOPE if the passed type "opens a name scope" according
* to the ACPI specification, else 0
*
******************************************************************************/
u32 acpi_ns_opens_scope(acpi_object_type type)
{
ACPI_FUNCTION_ENTRY();
if (type > ACPI_TYPE_LOCAL_MAX) {
/* type code out of range */
ACPI_WARNING((AE_INFO, "Invalid Object Type 0x%X", type));
return (ACPI_NS_NORMAL);
}
return (((u32)acpi_gbl_ns_properties[type]) & ACPI_NS_NEWSCOPE);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_get_node_unlocked
*
* PARAMETERS: *pathname - Name to be found, in external (ASL) format. The
* \ (backslash) and ^ (carat) prefixes, and the
* . (period) to separate segments are supported.
* prefix_node - Root of subtree to be searched, or NS_ALL for the
* root of the name space. If Name is fully
* qualified (first s8 is '\'), the passed value
* of Scope will not be accessed.
* flags - Used to indicate whether to perform upsearch or
* not.
* return_node - Where the Node is returned
*
* DESCRIPTION: Look up a name relative to a given scope and return the
* corresponding Node. NOTE: Scope can be null.
*
* MUTEX: Doesn't locks namespace
*
******************************************************************************/
acpi_status
acpi_ns_get_node_unlocked(struct acpi_namespace_node *prefix_node,
const char *pathname,
u32 flags, struct acpi_namespace_node **return_node)
{
union acpi_generic_state scope_info;
acpi_status status;
char *internal_path;
ACPI_FUNCTION_TRACE_PTR(ns_get_node_unlocked,
ACPI_CAST_PTR(char, pathname));
/* Simplest case is a null pathname */
if (!pathname) {
*return_node = prefix_node;
if (!prefix_node) {
*return_node = acpi_gbl_root_node;
}
return_ACPI_STATUS(AE_OK);
}
/* Quick check for a reference to the root */
if (ACPI_IS_ROOT_PREFIX(pathname[0]) && (!pathname[1])) {
*return_node = acpi_gbl_root_node;
return_ACPI_STATUS(AE_OK);
}
/* Convert path to internal representation */
status = acpi_ns_internalize_name(pathname, &internal_path);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Setup lookup scope (search starting point) */
scope_info.scope.node = prefix_node;
/* Lookup the name in the namespace */
status = acpi_ns_lookup(&scope_info, internal_path, ACPI_TYPE_ANY,
ACPI_IMODE_EXECUTE,
(flags | ACPI_NS_DONT_OPEN_SCOPE), NULL,
return_node);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%s, %s\n",
pathname, acpi_format_exception(status)));
}
ACPI_FREE(internal_path);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_get_node
*
* PARAMETERS: *pathname - Name to be found, in external (ASL) format. The
* \ (backslash) and ^ (carat) prefixes, and the
* . (period) to separate segments are supported.
* prefix_node - Root of subtree to be searched, or NS_ALL for the
* root of the name space. If Name is fully
* qualified (first s8 is '\'), the passed value
* of Scope will not be accessed.
* flags - Used to indicate whether to perform upsearch or
* not.
* return_node - Where the Node is returned
*
* DESCRIPTION: Look up a name relative to a given scope and return the
* corresponding Node. NOTE: Scope can be null.
*
* MUTEX: Locks namespace
*
******************************************************************************/
acpi_status
acpi_ns_get_node(struct acpi_namespace_node *prefix_node,
const char *pathname,
u32 flags, struct acpi_namespace_node **return_node)
{
acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ns_get_node, ACPI_CAST_PTR(char, pathname));
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_ns_get_node_unlocked(prefix_node, pathname,
flags, return_node);
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/nsutils.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: tbinstal - ACPI table installation and removal
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "actables.h"
#define _COMPONENT ACPI_TABLES
ACPI_MODULE_NAME("tbinstal")
/*******************************************************************************
*
* FUNCTION: acpi_tb_install_table_with_override
*
* PARAMETERS: new_table_desc - New table descriptor to install
* override - Whether override should be performed
* table_index - Where the table index is returned
*
* RETURN: None
*
* DESCRIPTION: Install an ACPI table into the global data structure. The
* table override mechanism is called to allow the host
* OS to replace any table before it is installed in the root
* table array.
*
******************************************************************************/
void
acpi_tb_install_table_with_override(struct acpi_table_desc *new_table_desc,
u8 override, u32 *table_index)
{
u32 i;
acpi_status status;
status = acpi_tb_get_next_table_descriptor(&i, NULL);
if (ACPI_FAILURE(status)) {
return;
}
/*
* ACPI Table Override:
*
* Before we install the table, let the host OS override it with a new
* one if desired. Any table within the RSDT/XSDT can be replaced,
* including the DSDT which is pointed to by the FADT.
*/
if (override) {
acpi_tb_override_table(new_table_desc);
}
acpi_tb_init_table_descriptor(&acpi_gbl_root_table_list.tables[i],
new_table_desc->address,
new_table_desc->flags,
new_table_desc->pointer);
acpi_tb_print_table_header(new_table_desc->address,
new_table_desc->pointer);
/* This synchronizes acpi_gbl_dsdt_index */
*table_index = i;
/* Set the global integer width (based upon revision of the DSDT) */
if (i == acpi_gbl_dsdt_index) {
acpi_ut_set_integer_width(new_table_desc->pointer->revision);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_install_standard_table
*
* PARAMETERS: address - Address of the table (might be a virtual
* address depending on the table_flags)
* flags - Flags for the table
* table - Pointer to the table (required for virtual
* origins, optional for physical)
* reload - Whether reload should be performed
* override - Whether override should be performed
* table_index - Where the table index is returned
*
* RETURN: Status
*
* DESCRIPTION: This function is called to verify and install an ACPI table.
* When this function is called by "Load" or "LoadTable" opcodes,
* or by acpi_load_table() API, the "Reload" parameter is set.
* After successfully returning from this function, table is
* "INSTALLED" but not "VALIDATED".
*
******************************************************************************/
acpi_status
acpi_tb_install_standard_table(acpi_physical_address address,
u8 flags,
struct acpi_table_header *table,
u8 reload, u8 override, u32 *table_index)
{
u32 i;
acpi_status status = AE_OK;
struct acpi_table_desc new_table_desc;
ACPI_FUNCTION_TRACE(tb_install_standard_table);
/* Acquire a temporary table descriptor for validation */
status =
acpi_tb_acquire_temp_table(&new_table_desc, address, flags, table);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO,
"Could not acquire table length at %8.8X%8.8X",
ACPI_FORMAT_UINT64(address)));
return_ACPI_STATUS(status);
}
/*
* Optionally do not load any SSDTs from the RSDT/XSDT. This can
* be useful for debugging ACPI problems on some machines.
*/
if (!reload &&
acpi_gbl_disable_ssdt_table_install &&
ACPI_COMPARE_NAMESEG(&new_table_desc.signature, ACPI_SIG_SSDT)) {
ACPI_INFO(("Ignoring installation of %4.4s at %8.8X%8.8X",
new_table_desc.signature.ascii,
ACPI_FORMAT_UINT64(address)));
goto release_and_exit;
}
/* Acquire the table lock */
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/* Validate and verify a table before installation */
status = acpi_tb_verify_temp_table(&new_table_desc, NULL, &i);
if (ACPI_FAILURE(status)) {
if (status == AE_CTRL_TERMINATE) {
/*
* Table was unloaded, allow it to be reloaded.
* As we are going to return AE_OK to the caller, we should
* take the responsibility of freeing the input descriptor.
* Refill the input descriptor to ensure
* acpi_tb_install_table_with_override() can be called again to
* indicate the re-installation.
*/
acpi_tb_uninstall_table(&new_table_desc);
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
*table_index = i;
return_ACPI_STATUS(AE_OK);
}
goto unlock_and_exit;
}
/* Add the table to the global root table list */
acpi_tb_install_table_with_override(&new_table_desc, override,
table_index);
/* Invoke table handler */
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
acpi_tb_notify_table(ACPI_TABLE_EVENT_INSTALL, new_table_desc.pointer);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
unlock_and_exit:
/* Release the table lock */
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
release_and_exit:
/* Release the temporary table descriptor */
acpi_tb_release_temp_table(&new_table_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_override_table
*
* PARAMETERS: old_table_desc - Validated table descriptor to be
* overridden
*
* RETURN: None
*
* DESCRIPTION: Attempt table override by calling the OSL override functions.
* Note: If the table is overridden, then the entire new table
* is acquired and returned by this function.
* Before/after invocation, the table descriptor is in a state
* that is "VALIDATED".
*
******************************************************************************/
void acpi_tb_override_table(struct acpi_table_desc *old_table_desc)
{
acpi_status status;
struct acpi_table_desc new_table_desc;
struct acpi_table_header *table;
acpi_physical_address address;
u32 length;
ACPI_ERROR_ONLY(char *override_type);
/* (1) Attempt logical override (returns a logical address) */
status = acpi_os_table_override(old_table_desc->pointer, &table);
if (ACPI_SUCCESS(status) && table) {
acpi_tb_acquire_temp_table(&new_table_desc,
ACPI_PTR_TO_PHYSADDR(table),
ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL,
table);
ACPI_ERROR_ONLY(override_type = "Logical");
goto finish_override;
}
/* (2) Attempt physical override (returns a physical address) */
status = acpi_os_physical_table_override(old_table_desc->pointer,
&address, &length);
if (ACPI_SUCCESS(status) && address && length) {
acpi_tb_acquire_temp_table(&new_table_desc, address,
ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL,
NULL);
ACPI_ERROR_ONLY(override_type = "Physical");
goto finish_override;
}
return; /* There was no override */
finish_override:
/*
* Validate and verify a table before overriding, no nested table
* duplication check as it's too complicated and unnecessary.
*/
status = acpi_tb_verify_temp_table(&new_table_desc, NULL, NULL);
if (ACPI_FAILURE(status)) {
return;
}
ACPI_INFO(("%4.4s 0x%8.8X%8.8X"
" %s table override, new table: 0x%8.8X%8.8X",
old_table_desc->signature.ascii,
ACPI_FORMAT_UINT64(old_table_desc->address),
override_type, ACPI_FORMAT_UINT64(new_table_desc.address)));
/* We can now uninstall the original table */
acpi_tb_uninstall_table(old_table_desc);
/*
* Replace the original table descriptor and keep its state as
* "VALIDATED".
*/
acpi_tb_init_table_descriptor(old_table_desc, new_table_desc.address,
new_table_desc.flags,
new_table_desc.pointer);
acpi_tb_validate_temp_table(old_table_desc);
/* Release the temporary table descriptor */
acpi_tb_release_temp_table(&new_table_desc);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_uninstall_table
*
* PARAMETERS: table_desc - Table descriptor
*
* RETURN: None
*
* DESCRIPTION: Delete one internal ACPI table
*
******************************************************************************/
void acpi_tb_uninstall_table(struct acpi_table_desc *table_desc)
{
ACPI_FUNCTION_TRACE(tb_uninstall_table);
/* Table must be installed */
if (!table_desc->address) {
return_VOID;
}
acpi_tb_invalidate_table(table_desc);
if ((table_desc->flags & ACPI_TABLE_ORIGIN_MASK) ==
ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL) {
ACPI_FREE(table_desc->pointer);
table_desc->pointer = NULL;
}
table_desc->address = ACPI_PTR_TO_PHYSADDR(NULL);
return_VOID;
}
| linux-master | drivers/acpi/acpica/tbinstal.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: exresop - AML Interpreter operand/object resolution
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "amlcode.h"
#include "acparser.h"
#include "acinterp.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("exresop")
/* Local prototypes */
static acpi_status
acpi_ex_check_object_type(acpi_object_type type_needed,
acpi_object_type this_type, void *object);
/*******************************************************************************
*
* FUNCTION: acpi_ex_check_object_type
*
* PARAMETERS: type_needed Object type needed
* this_type Actual object type
* Object Object pointer
*
* RETURN: Status
*
* DESCRIPTION: Check required type against actual type
*
******************************************************************************/
static acpi_status
acpi_ex_check_object_type(acpi_object_type type_needed,
acpi_object_type this_type, void *object)
{
ACPI_FUNCTION_ENTRY();
if (type_needed == ACPI_TYPE_ANY) {
/* All types OK, so we don't perform any typechecks */
return (AE_OK);
}
if (type_needed == ACPI_TYPE_LOCAL_REFERENCE) {
/*
* Allow the AML "Constant" opcodes (Zero, One, etc.) to be reference
* objects and thus allow them to be targets. (As per the ACPI
* specification, a store to a constant is a noop.)
*/
if ((this_type == ACPI_TYPE_INTEGER) &&
(((union acpi_operand_object *)object)->common.flags &
AOPOBJ_AML_CONSTANT)) {
return (AE_OK);
}
}
if (type_needed != this_type) {
ACPI_ERROR((AE_INFO,
"Needed type [%s], found [%s] %p",
acpi_ut_get_type_name(type_needed),
acpi_ut_get_type_name(this_type), object));
return (AE_AML_OPERAND_TYPE);
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_resolve_operands
*
* PARAMETERS: opcode - Opcode being interpreted
* stack_ptr - Pointer to the operand stack to be
* resolved
* walk_state - Current state
*
* RETURN: Status
*
* DESCRIPTION: Convert multiple input operands to the types required by the
* target operator.
*
* Each 5-bit group in arg_types represents one required
* operand and indicates the required Type. The corresponding operand
* will be converted to the required type if possible, otherwise we
* abort with an exception.
*
******************************************************************************/
acpi_status
acpi_ex_resolve_operands(u16 opcode,
union acpi_operand_object **stack_ptr,
struct acpi_walk_state *walk_state)
{
union acpi_operand_object *obj_desc;
acpi_status status = AE_OK;
u8 object_type;
u32 arg_types;
const struct acpi_opcode_info *op_info;
u32 this_arg_type;
acpi_object_type type_needed;
u16 target_op = 0;
ACPI_FUNCTION_TRACE_U32(ex_resolve_operands, opcode);
op_info = acpi_ps_get_opcode_info(opcode);
if (op_info->class == AML_CLASS_UNKNOWN) {
return_ACPI_STATUS(AE_AML_BAD_OPCODE);
}
arg_types = op_info->runtime_args;
if (arg_types == ARGI_INVALID_OPCODE) {
ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X", opcode));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Opcode %X [%s] RequiredOperandTypes=%8.8X\n",
opcode, op_info->name, arg_types));
/*
* Normal exit is with (arg_types == 0) at end of argument list.
* Function will return an exception from within the loop upon
* finding an entry which is not (or cannot be converted
* to) the required type; if stack underflows; or upon
* finding a NULL stack entry (which should not happen).
*/
while (GET_CURRENT_ARG_TYPE(arg_types)) {
if (!stack_ptr || !*stack_ptr) {
ACPI_ERROR((AE_INFO, "Null stack entry at %p",
stack_ptr));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
/* Extract useful items */
obj_desc = *stack_ptr;
/* Decode the descriptor type */
switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
case ACPI_DESC_TYPE_NAMED:
/* Namespace Node */
object_type =
((struct acpi_namespace_node *)obj_desc)->type;
/*
* Resolve an alias object. The construction of these objects
* guarantees that there is only one level of alias indirection;
* thus, the attached object is always the aliased namespace node
*/
if (object_type == ACPI_TYPE_LOCAL_ALIAS) {
obj_desc = acpi_ns_get_attached_object((struct
acpi_namespace_node
*)
obj_desc);
*stack_ptr = obj_desc;
object_type =
((struct acpi_namespace_node *)obj_desc)->
type;
}
break;
case ACPI_DESC_TYPE_OPERAND:
/* ACPI internal object */
object_type = obj_desc->common.type;
/* Check for bad acpi_object_type */
if (!acpi_ut_valid_object_type(object_type)) {
ACPI_ERROR((AE_INFO,
"Bad operand object type [0x%X]",
object_type));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
if (object_type == (u8) ACPI_TYPE_LOCAL_REFERENCE) {
/* Validate the Reference */
switch (obj_desc->reference.class) {
case ACPI_REFCLASS_DEBUG:
target_op = AML_DEBUG_OP;
ACPI_FALLTHROUGH;
case ACPI_REFCLASS_ARG:
case ACPI_REFCLASS_LOCAL:
case ACPI_REFCLASS_INDEX:
case ACPI_REFCLASS_REFOF:
case ACPI_REFCLASS_TABLE: /* ddb_handle from LOAD_OP or LOAD_TABLE_OP */
case ACPI_REFCLASS_NAME: /* Reference to a named object */
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Operand is a Reference, Class [%s] %2.2X\n",
acpi_ut_get_reference_name
(obj_desc),
obj_desc->reference.
class));
break;
default:
ACPI_ERROR((AE_INFO,
"Unknown Reference Class 0x%2.2X in %p",
obj_desc->reference.class,
obj_desc));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
}
break;
default:
/* Invalid descriptor */
ACPI_ERROR((AE_INFO, "Invalid descriptor %p [%s]",
obj_desc,
acpi_ut_get_descriptor_name(obj_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/* Get one argument type, point to the next */
this_arg_type = GET_CURRENT_ARG_TYPE(arg_types);
INCREMENT_ARG_LIST(arg_types);
/*
* Handle cases where the object does not need to be
* resolved to a value
*/
switch (this_arg_type) {
case ARGI_REF_OR_STRING: /* Can be a String or Reference */
if ((ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
ACPI_DESC_TYPE_OPERAND) &&
(obj_desc->common.type == ACPI_TYPE_STRING)) {
/*
* String found - the string references a named object and
* must be resolved to a node
*/
goto next_operand;
}
/*
* Else not a string - fall through to the normal Reference
* case below
*/
ACPI_FALLTHROUGH;
case ARGI_REFERENCE: /* References: */
case ARGI_INTEGER_REF:
case ARGI_OBJECT_REF:
case ARGI_DEVICE_REF:
case ARGI_TARGETREF: /* Allows implicit conversion rules before store */
case ARGI_FIXED_TARGET: /* No implicit conversion before store to target */
case ARGI_SIMPLE_TARGET: /* Name, Local, or arg - no implicit conversion */
case ARGI_STORE_TARGET:
/*
* Need an operand of type ACPI_TYPE_LOCAL_REFERENCE
* A Namespace Node is OK as-is
*/
if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
ACPI_DESC_TYPE_NAMED) {
goto next_operand;
}
status =
acpi_ex_check_object_type(ACPI_TYPE_LOCAL_REFERENCE,
object_type, obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
goto next_operand;
case ARGI_DATAREFOBJ: /* Store operator only */
/*
* We don't want to resolve index_op reference objects during
* a store because this would be an implicit de_ref_of operation.
* Instead, we just want to store the reference object.
* -- All others must be resolved below.
*/
if ((opcode == AML_STORE_OP) &&
((*stack_ptr)->common.type ==
ACPI_TYPE_LOCAL_REFERENCE)
&& ((*stack_ptr)->reference.class ==
ACPI_REFCLASS_INDEX)) {
goto next_operand;
}
break;
default:
/* All cases covered above */
break;
}
/*
* Resolve this object to a value
*/
status = acpi_ex_resolve_to_value(stack_ptr, walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Get the resolved object */
obj_desc = *stack_ptr;
/*
* Check the resulting object (value) type
*/
switch (this_arg_type) {
/*
* For the simple cases, only one type of resolved object
* is allowed
*/
case ARGI_MUTEX:
/* Need an operand of type ACPI_TYPE_MUTEX */
type_needed = ACPI_TYPE_MUTEX;
break;
case ARGI_EVENT:
/* Need an operand of type ACPI_TYPE_EVENT */
type_needed = ACPI_TYPE_EVENT;
break;
case ARGI_PACKAGE: /* Package */
/* Need an operand of type ACPI_TYPE_PACKAGE */
type_needed = ACPI_TYPE_PACKAGE;
break;
case ARGI_ANYTYPE:
/* Any operand type will do */
type_needed = ACPI_TYPE_ANY;
break;
case ARGI_DDBHANDLE:
/* Need an operand of type ACPI_TYPE_DDB_HANDLE */
type_needed = ACPI_TYPE_LOCAL_REFERENCE;
break;
/*
* The more complex cases allow multiple resolved object types
*/
case ARGI_INTEGER:
/*
* Need an operand of type ACPI_TYPE_INTEGER, but we can
* implicitly convert from a STRING or BUFFER.
*
* Known as "Implicit Source Operand Conversion"
*/
status = acpi_ex_convert_to_integer(obj_desc, stack_ptr,
ACPI_IMPLICIT_CONVERSION);
if (ACPI_FAILURE(status)) {
if (status == AE_TYPE) {
ACPI_ERROR((AE_INFO,
"Needed [Integer/String/Buffer], found [%s] %p",
acpi_ut_get_object_type_name
(obj_desc), obj_desc));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
return_ACPI_STATUS(status);
}
if (obj_desc != *stack_ptr) {
acpi_ut_remove_reference(obj_desc);
}
goto next_operand;
case ARGI_BUFFER:
/*
* Need an operand of type ACPI_TYPE_BUFFER,
* But we can implicitly convert from a STRING or INTEGER
* aka - "Implicit Source Operand Conversion"
*/
status = acpi_ex_convert_to_buffer(obj_desc, stack_ptr);
if (ACPI_FAILURE(status)) {
if (status == AE_TYPE) {
ACPI_ERROR((AE_INFO,
"Needed [Integer/String/Buffer], found [%s] %p",
acpi_ut_get_object_type_name
(obj_desc), obj_desc));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
return_ACPI_STATUS(status);
}
if (obj_desc != *stack_ptr) {
acpi_ut_remove_reference(obj_desc);
}
goto next_operand;
case ARGI_STRING:
/*
* Need an operand of type ACPI_TYPE_STRING,
* But we can implicitly convert from a BUFFER or INTEGER
* aka - "Implicit Source Operand Conversion"
*/
status =
acpi_ex_convert_to_string(obj_desc, stack_ptr,
ACPI_IMPLICIT_CONVERT_HEX);
if (ACPI_FAILURE(status)) {
if (status == AE_TYPE) {
ACPI_ERROR((AE_INFO,
"Needed [Integer/String/Buffer], found [%s] %p",
acpi_ut_get_object_type_name
(obj_desc), obj_desc));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
return_ACPI_STATUS(status);
}
if (obj_desc != *stack_ptr) {
acpi_ut_remove_reference(obj_desc);
}
goto next_operand;
case ARGI_COMPUTEDATA:
/* Need an operand of type INTEGER, STRING or BUFFER */
switch (obj_desc->common.type) {
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/* Valid operand */
break;
default:
ACPI_ERROR((AE_INFO,
"Needed [Integer/String/Buffer], found [%s] %p",
acpi_ut_get_object_type_name
(obj_desc), obj_desc));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
goto next_operand;
case ARGI_BUFFER_OR_STRING:
/* Need an operand of type STRING or BUFFER */
switch (obj_desc->common.type) {
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/* Valid operand */
break;
case ACPI_TYPE_INTEGER:
/* Highest priority conversion is to type Buffer */
status =
acpi_ex_convert_to_buffer(obj_desc,
stack_ptr);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (obj_desc != *stack_ptr) {
acpi_ut_remove_reference(obj_desc);
}
break;
default:
ACPI_ERROR((AE_INFO,
"Needed [Integer/String/Buffer], found [%s] %p",
acpi_ut_get_object_type_name
(obj_desc), obj_desc));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
goto next_operand;
case ARGI_DATAOBJECT:
/*
* ARGI_DATAOBJECT is only used by the size_of operator.
* Need a buffer, string, package, or ref_of reference.
*
* The only reference allowed here is a direct reference to
* a namespace node.
*/
switch (obj_desc->common.type) {
case ACPI_TYPE_PACKAGE:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_LOCAL_REFERENCE:
/* Valid operand */
break;
default:
ACPI_ERROR((AE_INFO,
"Needed [Buffer/String/Package/Reference], found [%s] %p",
acpi_ut_get_object_type_name
(obj_desc), obj_desc));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
goto next_operand;
case ARGI_COMPLEXOBJ:
/* Need a buffer or package or (ACPI 2.0) String */
switch (obj_desc->common.type) {
case ACPI_TYPE_PACKAGE:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/* Valid operand */
break;
default:
ACPI_ERROR((AE_INFO,
"Needed [Buffer/String/Package], found [%s] %p",
acpi_ut_get_object_type_name
(obj_desc), obj_desc));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
goto next_operand;
case ARGI_REGION_OR_BUFFER: /* Used by Load() only */
/*
* Need an operand of type REGION or a BUFFER
* (which could be a resolved region field)
*/
switch (obj_desc->common.type) {
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_REGION:
/* Valid operand */
break;
default:
ACPI_ERROR((AE_INFO,
"Needed [Region/Buffer], found [%s] %p",
acpi_ut_get_object_type_name
(obj_desc), obj_desc));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
goto next_operand;
case ARGI_DATAREFOBJ:
/* Used by the Store() operator only */
switch (obj_desc->common.type) {
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_PACKAGE:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_REFERENCE:
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
case ACPI_TYPE_LOCAL_INDEX_FIELD:
case ACPI_TYPE_DDB_HANDLE:
/* Valid operand */
break;
default:
if (acpi_gbl_enable_interpreter_slack) {
/*
* Enable original behavior of Store(), allowing any
* and all objects as the source operand. The ACPI
* spec does not allow this, however.
*/
break;
}
if (target_op == AML_DEBUG_OP) {
/* Allow store of any object to the Debug object */
break;
}
ACPI_ERROR((AE_INFO,
"Needed Integer/Buffer/String/Package/Ref/Ddb]"
", found [%s] %p",
acpi_ut_get_object_type_name
(obj_desc), obj_desc));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
goto next_operand;
default:
/* Unknown type */
ACPI_ERROR((AE_INFO,
"Internal - Unknown ARGI (required operand) type 0x%X",
this_arg_type));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*
* Make sure that the original object was resolved to the
* required object type (Simple cases only).
*/
status =
acpi_ex_check_object_type(type_needed,
(*stack_ptr)->common.type,
*stack_ptr);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
next_operand:
/*
* If more operands needed, decrement stack_ptr to point
* to next operand on stack
*/
if (GET_CURRENT_ARG_TYPE(arg_types)) {
stack_ptr--;
}
}
ACPI_DUMP_OPERANDS(walk_state->operands,
acpi_ps_get_opcode_name(opcode),
walk_state->num_operands);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/exresop.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: tbfadt - FADT table utilities
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "actables.h"
#define _COMPONENT ACPI_TABLES
ACPI_MODULE_NAME("tbfadt")
/* Local prototypes */
static void
acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
u8 space_id,
u8 byte_width,
u64 address, const char *register_name, u8 flags);
static void acpi_tb_convert_fadt(void);
static void acpi_tb_setup_fadt_registers(void);
static u64
acpi_tb_select_address(char *register_name, u32 address32, u64 address64);
/* Table for conversion of FADT to common internal format and FADT validation */
typedef struct acpi_fadt_info {
const char *name;
u16 address64;
u16 address32;
u16 length;
u8 default_length;
u8 flags;
} acpi_fadt_info;
#define ACPI_FADT_OPTIONAL 0
#define ACPI_FADT_REQUIRED 1
#define ACPI_FADT_SEPARATE_LENGTH 2
#define ACPI_FADT_GPE_REGISTER 4
static struct acpi_fadt_info fadt_info_table[] = {
{"Pm1aEventBlock",
ACPI_FADT_OFFSET(xpm1a_event_block),
ACPI_FADT_OFFSET(pm1a_event_block),
ACPI_FADT_OFFSET(pm1_event_length),
ACPI_PM1_REGISTER_WIDTH * 2, /* Enable + Status register */
ACPI_FADT_REQUIRED},
{"Pm1bEventBlock",
ACPI_FADT_OFFSET(xpm1b_event_block),
ACPI_FADT_OFFSET(pm1b_event_block),
ACPI_FADT_OFFSET(pm1_event_length),
ACPI_PM1_REGISTER_WIDTH * 2, /* Enable + Status register */
ACPI_FADT_OPTIONAL},
{"Pm1aControlBlock",
ACPI_FADT_OFFSET(xpm1a_control_block),
ACPI_FADT_OFFSET(pm1a_control_block),
ACPI_FADT_OFFSET(pm1_control_length),
ACPI_PM1_REGISTER_WIDTH,
ACPI_FADT_REQUIRED},
{"Pm1bControlBlock",
ACPI_FADT_OFFSET(xpm1b_control_block),
ACPI_FADT_OFFSET(pm1b_control_block),
ACPI_FADT_OFFSET(pm1_control_length),
ACPI_PM1_REGISTER_WIDTH,
ACPI_FADT_OPTIONAL},
{"Pm2ControlBlock",
ACPI_FADT_OFFSET(xpm2_control_block),
ACPI_FADT_OFFSET(pm2_control_block),
ACPI_FADT_OFFSET(pm2_control_length),
ACPI_PM2_REGISTER_WIDTH,
ACPI_FADT_SEPARATE_LENGTH},
{"PmTimerBlock",
ACPI_FADT_OFFSET(xpm_timer_block),
ACPI_FADT_OFFSET(pm_timer_block),
ACPI_FADT_OFFSET(pm_timer_length),
ACPI_PM_TIMER_WIDTH,
ACPI_FADT_SEPARATE_LENGTH}, /* ACPI 5.0A: Timer is optional */
{"Gpe0Block",
ACPI_FADT_OFFSET(xgpe0_block),
ACPI_FADT_OFFSET(gpe0_block),
ACPI_FADT_OFFSET(gpe0_block_length),
0,
ACPI_FADT_SEPARATE_LENGTH | ACPI_FADT_GPE_REGISTER},
{"Gpe1Block",
ACPI_FADT_OFFSET(xgpe1_block),
ACPI_FADT_OFFSET(gpe1_block),
ACPI_FADT_OFFSET(gpe1_block_length),
0,
ACPI_FADT_SEPARATE_LENGTH | ACPI_FADT_GPE_REGISTER}
};
#define ACPI_FADT_INFO_ENTRIES \
(sizeof (fadt_info_table) / sizeof (struct acpi_fadt_info))
/* Table used to split Event Blocks into separate status/enable registers */
typedef struct acpi_fadt_pm_info {
struct acpi_generic_address *target;
u16 source;
u8 register_num;
} acpi_fadt_pm_info;
static struct acpi_fadt_pm_info fadt_pm_info_table[] = {
{&acpi_gbl_xpm1a_status,
ACPI_FADT_OFFSET(xpm1a_event_block),
0},
{&acpi_gbl_xpm1a_enable,
ACPI_FADT_OFFSET(xpm1a_event_block),
1},
{&acpi_gbl_xpm1b_status,
ACPI_FADT_OFFSET(xpm1b_event_block),
0},
{&acpi_gbl_xpm1b_enable,
ACPI_FADT_OFFSET(xpm1b_event_block),
1}
};
#define ACPI_FADT_PM_INFO_ENTRIES \
(sizeof (fadt_pm_info_table) / sizeof (struct acpi_fadt_pm_info))
/*******************************************************************************
*
* FUNCTION: acpi_tb_init_generic_address
*
* PARAMETERS: generic_address - GAS struct to be initialized
* space_id - ACPI Space ID for this register
* byte_width - Width of this register
* address - Address of the register
* register_name - ASCII name of the ACPI register
*
* RETURN: None
*
* DESCRIPTION: Initialize a Generic Address Structure (GAS)
* See the ACPI specification for a full description and
* definition of this structure.
*
******************************************************************************/
static void
acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
u8 space_id,
u8 byte_width,
u64 address, const char *register_name, u8 flags)
{
u8 bit_width;
/*
* Bit width field in the GAS is only one byte long, 255 max.
* Check for bit_width overflow in GAS.
*/
bit_width = (u8)(byte_width * 8);
if (byte_width > 31) { /* (31*8)=248, (32*8)=256 */
/*
* No error for GPE blocks, because we do not use the bit_width
* for GPEs, the legacy length (byte_width) is used instead to
* allow for a large number of GPEs.
*/
if (!(flags & ACPI_FADT_GPE_REGISTER)) {
ACPI_ERROR((AE_INFO,
"%s - 32-bit FADT register is too long (%u bytes, %u bits) "
"to convert to GAS struct - 255 bits max, truncating",
register_name, byte_width,
(byte_width * 8)));
}
bit_width = 255;
}
/*
* The 64-bit Address field is non-aligned in the byte packed
* GAS struct.
*/
ACPI_MOVE_64_TO_64(&generic_address->address, &address);
/* All other fields are byte-wide */
generic_address->space_id = space_id;
generic_address->bit_width = bit_width;
generic_address->bit_offset = 0;
generic_address->access_width = 0; /* Access width ANY */
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_select_address
*
* PARAMETERS: register_name - ASCII name of the ACPI register
* address32 - 32-bit address of the register
* address64 - 64-bit address of the register
*
* RETURN: The resolved 64-bit address
*
* DESCRIPTION: Select between 32-bit and 64-bit versions of addresses within
* the FADT. Used for the FACS and DSDT addresses.
*
* NOTES:
*
* Check for FACS and DSDT address mismatches. An address mismatch between
* the 32-bit and 64-bit address fields (FIRMWARE_CTRL/X_FIRMWARE_CTRL and
* DSDT/X_DSDT) could be a corrupted address field or it might indicate
* the presence of two FACS or two DSDT tables.
*
* November 2013:
* By default, as per the ACPICA specification, a valid 64-bit address is
* used regardless of the value of the 32-bit address. However, this
* behavior can be overridden via the acpi_gbl_use32_bit_fadt_addresses flag.
*
******************************************************************************/
static u64
acpi_tb_select_address(char *register_name, u32 address32, u64 address64)
{
if (!address64) {
/* 64-bit address is zero, use 32-bit address */
return ((u64)address32);
}
if (address32 && (address64 != (u64)address32)) {
/* Address mismatch between 32-bit and 64-bit versions */
ACPI_BIOS_WARNING((AE_INFO,
"32/64X %s address mismatch in FADT: "
"0x%8.8X/0x%8.8X%8.8X, using %u-bit address",
register_name, address32,
ACPI_FORMAT_UINT64(address64),
acpi_gbl_use32_bit_fadt_addresses ? 32 :
64));
/* 32-bit address override */
if (acpi_gbl_use32_bit_fadt_addresses) {
return ((u64)address32);
}
}
/* Default is to use the 64-bit address */
return (address64);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_parse_fadt
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Initialize the FADT, DSDT and FACS tables
* (FADT contains the addresses of the DSDT and FACS)
*
******************************************************************************/
void acpi_tb_parse_fadt(void)
{
u32 length;
struct acpi_table_header *table;
struct acpi_table_desc *fadt_desc;
acpi_status status;
/*
* The FADT has multiple versions with different lengths,
* and it contains pointers to both the DSDT and FACS tables.
*
* Get a local copy of the FADT and convert it to a common format
* Map entire FADT, assumed to be smaller than one page.
*/
fadt_desc = &acpi_gbl_root_table_list.tables[acpi_gbl_fadt_index];
status = acpi_tb_get_table(fadt_desc, &table);
if (ACPI_FAILURE(status)) {
return;
}
length = fadt_desc->length;
/*
* Validate the FADT checksum before we copy the table. Ignore
* checksum error as we want to try to get the DSDT and FACS.
*/
(void)acpi_ut_verify_checksum(table, length);
/* Create a local copy of the FADT in common ACPI 2.0+ format */
acpi_tb_create_local_fadt(table, length);
/* All done with the real FADT, unmap it */
acpi_tb_put_table(fadt_desc);
/* Obtain the DSDT and FACS tables via their addresses within the FADT */
acpi_tb_install_standard_table((acpi_physical_address)acpi_gbl_FADT.
Xdsdt,
ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL,
NULL, FALSE, TRUE, &acpi_gbl_dsdt_index);
/* If Hardware Reduced flag is set, there is no FACS */
if (!acpi_gbl_reduced_hardware) {
if (acpi_gbl_FADT.facs) {
acpi_tb_install_standard_table((acpi_physical_address)
acpi_gbl_FADT.facs,
ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL,
NULL, FALSE, TRUE,
&acpi_gbl_facs_index);
}
if (acpi_gbl_FADT.Xfacs) {
acpi_tb_install_standard_table((acpi_physical_address)
acpi_gbl_FADT.Xfacs,
ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL,
NULL, FALSE, TRUE,
&acpi_gbl_xfacs_index);
}
}
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_create_local_fadt
*
* PARAMETERS: table - Pointer to BIOS FADT
* length - Length of the table
*
* RETURN: None
*
* DESCRIPTION: Get a local copy of the FADT and convert it to a common format.
* Performs validation on some important FADT fields.
*
* NOTE: We create a local copy of the FADT regardless of the version.
*
******************************************************************************/
void acpi_tb_create_local_fadt(struct acpi_table_header *table, u32 length)
{
/*
* Check if the FADT is larger than the largest table that we expect
* (typically the current ACPI specification version). If so, truncate
* the table, and issue a warning.
*/
if (length > sizeof(struct acpi_table_fadt)) {
ACPI_BIOS_WARNING((AE_INFO,
"FADT (revision %u) is longer than %s length, "
"truncating length %u to %u",
table->revision, ACPI_FADT_CONFORMANCE,
length,
(u32)sizeof(struct acpi_table_fadt)));
}
/* Clear the entire local FADT */
memset(&acpi_gbl_FADT, 0, sizeof(struct acpi_table_fadt));
/* Copy the original FADT, up to sizeof (struct acpi_table_fadt) */
memcpy(&acpi_gbl_FADT, table,
ACPI_MIN(length, sizeof(struct acpi_table_fadt)));
/* Take a copy of the Hardware Reduced flag */
acpi_gbl_reduced_hardware = FALSE;
if (acpi_gbl_FADT.flags & ACPI_FADT_HW_REDUCED) {
acpi_gbl_reduced_hardware = TRUE;
}
/* Convert the local copy of the FADT to the common internal format */
acpi_tb_convert_fadt();
/* Initialize the global ACPI register structures */
acpi_tb_setup_fadt_registers();
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_convert_fadt
*
* PARAMETERS: none - acpi_gbl_FADT is used.
*
* RETURN: None
*
* DESCRIPTION: Converts all versions of the FADT to a common internal format.
* Expand 32-bit addresses to 64-bit as necessary. Also validate
* important fields within the FADT.
*
* NOTE: acpi_gbl_FADT must be of size (struct acpi_table_fadt), and must
* contain a copy of the actual BIOS-provided FADT.
*
* Notes on 64-bit register addresses:
*
* After this FADT conversion, later ACPICA code will only use the 64-bit "X"
* fields of the FADT for all ACPI register addresses.
*
* The 64-bit X fields are optional extensions to the original 32-bit FADT
* V1.0 fields. Even if they are present in the FADT, they are optional and
* are unused if the BIOS sets them to zero. Therefore, we must copy/expand
* 32-bit V1.0 fields to the 64-bit X fields if the 64-bit X field is originally
* zero.
*
* For ACPI 1.0 FADTs (that contain no 64-bit addresses), all 32-bit address
* fields are expanded to the corresponding 64-bit X fields in the internal
* common FADT.
*
* For ACPI 2.0+ FADTs, all valid (non-zero) 32-bit address fields are expanded
* to the corresponding 64-bit X fields, if the 64-bit field is originally
* zero. Adhering to the ACPI specification, we completely ignore the 32-bit
* field if the 64-bit field is valid, regardless of whether the host OS is
* 32-bit or 64-bit.
*
* Possible additional checks:
* (acpi_gbl_FADT.pm1_event_length >= 4)
* (acpi_gbl_FADT.pm1_control_length >= 2)
* (acpi_gbl_FADT.pm_timer_length >= 4)
* Gpe block lengths must be multiple of 2
*
******************************************************************************/
static void acpi_tb_convert_fadt(void)
{
const char *name;
struct acpi_generic_address *address64;
u32 address32;
u8 length;
u8 flags;
u32 i;
/*
* For ACPI 1.0 FADTs (revision 1 or 2), ensure that reserved fields which
* should be zero are indeed zero. This will workaround BIOSs that
* inadvertently place values in these fields.
*
* The ACPI 1.0 reserved fields that will be zeroed are the bytes located
* at offset 45, 55, 95, and the word located at offset 109, 110.
*
* Note: The FADT revision value is unreliable. Only the length can be
* trusted.
*/
if (acpi_gbl_FADT.header.length <= ACPI_FADT_V2_SIZE) {
acpi_gbl_FADT.preferred_profile = 0;
acpi_gbl_FADT.pstate_control = 0;
acpi_gbl_FADT.cst_control = 0;
acpi_gbl_FADT.boot_flags = 0;
}
/*
* Now we can update the local FADT length to the length of the
* current FADT version as defined by the ACPI specification.
* Thus, we will have a common FADT internally.
*/
acpi_gbl_FADT.header.length = sizeof(struct acpi_table_fadt);
/*
* Expand the 32-bit DSDT addresses to 64-bit as necessary.
* Later ACPICA code will always use the X 64-bit field.
*/
acpi_gbl_FADT.Xdsdt = acpi_tb_select_address("DSDT",
acpi_gbl_FADT.dsdt,
acpi_gbl_FADT.Xdsdt);
/* If Hardware Reduced flag is set, we are all done */
if (acpi_gbl_reduced_hardware) {
return;
}
/* Examine all of the 64-bit extended address fields (X fields) */
for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) {
/*
* Get the 32-bit and 64-bit addresses, as well as the register
* length and register name.
*/
address32 = *ACPI_ADD_PTR(u32,
&acpi_gbl_FADT,
fadt_info_table[i].address32);
address64 = ACPI_ADD_PTR(struct acpi_generic_address,
&acpi_gbl_FADT,
fadt_info_table[i].address64);
length = *ACPI_ADD_PTR(u8,
&acpi_gbl_FADT,
fadt_info_table[i].length);
name = fadt_info_table[i].name;
flags = fadt_info_table[i].flags;
/*
* Expand the ACPI 1.0 32-bit addresses to the ACPI 2.0 64-bit "X"
* generic address structures as necessary. Later code will always use
* the 64-bit address structures.
*
* November 2013:
* Now always use the 64-bit address if it is valid (non-zero), in
* accordance with the ACPI specification which states that a 64-bit
* address supersedes the 32-bit version. This behavior can be
* overridden by the acpi_gbl_use32_bit_fadt_addresses flag.
*
* During 64-bit address construction and verification,
* these cases are handled:
*
* Address32 zero, Address64 [don't care] - Use Address64
*
* No override: if acpi_gbl_use32_bit_fadt_addresses is FALSE, and:
* Address32 non-zero, Address64 zero - Copy/use Address32
* Address32 non-zero == Address64 non-zero - Use Address64
* Address32 non-zero != Address64 non-zero - Warning, use Address64
*
* Override: if acpi_gbl_use32_bit_fadt_addresses is TRUE, and:
* Address32 non-zero, Address64 zero - Copy/use Address32
* Address32 non-zero == Address64 non-zero - Copy/use Address32
* Address32 non-zero != Address64 non-zero - Warning, copy/use Address32
*
* Note: space_id is always I/O for 32-bit legacy address fields
*/
if (address32) {
if (address64->address) {
if (address64->address != (u64)address32) {
/* Address mismatch */
ACPI_BIOS_WARNING((AE_INFO,
"32/64X address mismatch in FADT/%s: "
"0x%8.8X/0x%8.8X%8.8X, using %u-bit address",
name, address32,
ACPI_FORMAT_UINT64
(address64->address),
acpi_gbl_use32_bit_fadt_addresses
? 32 : 64));
}
/*
* For each extended field, check for length mismatch
* between the legacy length field and the corresponding
* 64-bit X length field.
* Note: If the legacy length field is > 0xFF bits, ignore
* this check. (GPE registers can be larger than the
* 64-bit GAS structure can accommodate, 0xFF bits).
*/
if ((ACPI_MUL_8(length) <= ACPI_UINT8_MAX) &&
(address64->bit_width !=
ACPI_MUL_8(length))) {
ACPI_BIOS_WARNING((AE_INFO,
"32/64X length mismatch in FADT/%s: %u/%u",
name,
ACPI_MUL_8(length),
address64->
bit_width));
}
}
/*
* Hardware register access code always uses the 64-bit fields.
* So if the 64-bit field is zero or is to be overridden,
* initialize it with the 32-bit fields.
* Note that when the 32-bit address favor is specified, the
* 64-bit fields are always re-initialized so that
* access_size/bit_width/bit_offset fields can be correctly
* configured to the values to trigger a 32-bit compatible
* access mode in the hardware register access code.
*/
if (!address64->address
|| acpi_gbl_use32_bit_fadt_addresses) {
acpi_tb_init_generic_address(address64,
ACPI_ADR_SPACE_SYSTEM_IO,
length,
(u64)address32,
name, flags);
}
}
if (fadt_info_table[i].flags & ACPI_FADT_REQUIRED) {
/*
* Field is required (Pm1a_event, Pm1a_control).
* Both the address and length must be non-zero.
*/
if (!address64->address || !length) {
ACPI_BIOS_ERROR((AE_INFO,
"Required FADT field %s has zero address and/or length: "
"0x%8.8X%8.8X/0x%X",
name,
ACPI_FORMAT_UINT64(address64->
address),
length));
}
} else if (fadt_info_table[i].flags & ACPI_FADT_SEPARATE_LENGTH) {
/*
* Field is optional (Pm2_control, GPE0, GPE1) AND has its own
* length field. If present, both the address and length must
* be valid.
*/
if ((address64->address && !length) ||
(!address64->address && length)) {
ACPI_BIOS_WARNING((AE_INFO,
"Optional FADT field %s has valid %s but zero %s: "
"0x%8.8X%8.8X/0x%X", name,
(length ? "Length" :
"Address"),
(length ? "Address" :
"Length"),
ACPI_FORMAT_UINT64
(address64->address),
length));
}
}
}
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_setup_fadt_registers
*
* PARAMETERS: None, uses acpi_gbl_FADT.
*
* RETURN: None
*
* DESCRIPTION: Initialize global ACPI PM1 register definitions. Optionally,
* force FADT register definitions to their default lengths.
*
******************************************************************************/
static void acpi_tb_setup_fadt_registers(void)
{
struct acpi_generic_address *target64;
struct acpi_generic_address *source64;
u8 pm1_register_byte_width;
u32 i;
/*
* Optionally check all register lengths against the default values and
* update them if they are incorrect.
*/
if (acpi_gbl_use_default_register_widths) {
for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) {
target64 =
ACPI_ADD_PTR(struct acpi_generic_address,
&acpi_gbl_FADT,
fadt_info_table[i].address64);
/*
* If a valid register (Address != 0) and the (default_length > 0)
* (Not a GPE register), then check the width against the default.
*/
if ((target64->address) &&
(fadt_info_table[i].default_length > 0) &&
(fadt_info_table[i].default_length !=
target64->bit_width)) {
ACPI_BIOS_WARNING((AE_INFO,
"Invalid length for FADT/%s: %u, using default %u",
fadt_info_table[i].name,
target64->bit_width,
fadt_info_table[i].
default_length));
/* Incorrect size, set width to the default */
target64->bit_width =
fadt_info_table[i].default_length;
}
}
}
/*
* Get the length of the individual PM1 registers (enable and status).
* Each register is defined to be (event block length / 2). Extra divide
* by 8 converts bits to bytes.
*/
pm1_register_byte_width = (u8)
ACPI_DIV_16(acpi_gbl_FADT.xpm1a_event_block.bit_width);
/*
* Calculate separate GAS structs for the PM1x (A/B) Status and Enable
* registers. These addresses do not appear (directly) in the FADT, so it
* is useful to pre-calculate them from the PM1 Event Block definitions.
*
* The PM event blocks are split into two register blocks, first is the
* PM Status Register block, followed immediately by the PM Enable
* Register block. Each is of length (pm1_event_length/2)
*
* Note: The PM1A event block is required by the ACPI specification.
* However, the PM1B event block is optional and is rarely, if ever,
* used.
*/
for (i = 0; i < ACPI_FADT_PM_INFO_ENTRIES; i++) {
source64 =
ACPI_ADD_PTR(struct acpi_generic_address, &acpi_gbl_FADT,
fadt_pm_info_table[i].source);
if (source64->address) {
acpi_tb_init_generic_address(fadt_pm_info_table[i].
target, source64->space_id,
pm1_register_byte_width,
source64->address +
(fadt_pm_info_table[i].
register_num *
pm1_register_byte_width),
"PmRegisters", 0);
}
}
}
| linux-master | drivers/acpi/acpica/tbfadt.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: utnonansi - Non-ansi C library functions
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utnonansi")
/*
* Non-ANSI C library functions - strlwr, strupr, stricmp, and "safe"
* string functions.
*/
/*******************************************************************************
*
* FUNCTION: acpi_ut_strlwr (strlwr)
*
* PARAMETERS: src_string - The source string to convert
*
* RETURN: None
*
* DESCRIPTION: Convert a string to lowercase
*
******************************************************************************/
void acpi_ut_strlwr(char *src_string)
{
char *string;
ACPI_FUNCTION_ENTRY();
if (!src_string) {
return;
}
/* Walk entire string, lowercasing the letters */
for (string = src_string; *string; string++) {
*string = (char)tolower((int)*string);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_strupr (strupr)
*
* PARAMETERS: src_string - The source string to convert
*
* RETURN: None
*
* DESCRIPTION: Convert a string to uppercase
*
******************************************************************************/
void acpi_ut_strupr(char *src_string)
{
char *string;
ACPI_FUNCTION_ENTRY();
if (!src_string) {
return;
}
/* Walk entire string, uppercasing the letters */
for (string = src_string; *string; string++) {
*string = (char)toupper((int)*string);
}
}
/******************************************************************************
*
* FUNCTION: acpi_ut_stricmp (stricmp)
*
* PARAMETERS: string1 - first string to compare
* string2 - second string to compare
*
* RETURN: int that signifies string relationship. Zero means strings
* are equal.
*
* DESCRIPTION: Case-insensitive string compare. Implementation of the
* non-ANSI stricmp function.
*
******************************************************************************/
int acpi_ut_stricmp(char *string1, char *string2)
{
int c1;
int c2;
do {
c1 = tolower((int)*string1);
c2 = tolower((int)*string2);
string1++;
string2++;
}
while ((c1 == c2) && (c1));
return (c1 - c2);
}
#if defined (ACPI_DEBUGGER) || defined (ACPI_APPLICATION) || defined (ACPI_DEBUG_OUTPUT)
/*******************************************************************************
*
* FUNCTION: acpi_ut_safe_strcpy, acpi_ut_safe_strcat, acpi_ut_safe_strncat
*
* PARAMETERS: Adds a "DestSize" parameter to each of the standard string
* functions. This is the size of the Destination buffer.
*
* RETURN: TRUE if the operation would overflow the destination buffer.
*
* DESCRIPTION: Safe versions of standard Clib string functions. Ensure that
* the result of the operation will not overflow the output string
* buffer.
*
* NOTE: These functions are typically only helpful for processing
* user input and command lines. For most ACPICA code, the
* required buffer length is precisely calculated before buffer
* allocation, so the use of these functions is unnecessary.
*
******************************************************************************/
u8 acpi_ut_safe_strcpy(char *dest, acpi_size dest_size, char *source)
{
if (strlen(source) >= dest_size) {
return (TRUE);
}
strcpy(dest, source);
return (FALSE);
}
u8 acpi_ut_safe_strcat(char *dest, acpi_size dest_size, char *source)
{
if ((strlen(dest) + strlen(source)) >= dest_size) {
return (TRUE);
}
strcat(dest, source);
return (FALSE);
}
u8
acpi_ut_safe_strncat(char *dest,
acpi_size dest_size,
char *source, acpi_size max_transfer_length)
{
acpi_size actual_transfer_length;
actual_transfer_length = ACPI_MIN(max_transfer_length, strlen(source));
if ((strlen(dest) + actual_transfer_length) >= dest_size) {
return (TRUE);
}
strncat(dest, source, max_transfer_length);
return (FALSE);
}
void acpi_ut_safe_strncpy(char *dest, char *source, acpi_size dest_size)
{
/* Always terminate destination string */
strncpy(dest, source, dest_size);
dest[dest_size - 1] = 0;
}
#endif
| linux-master | drivers/acpi/acpica/utnonansi.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: tbxfload - Table load/unload external interfaces
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#define EXPORT_ACPI_INTERFACES
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "actables.h"
#include "acevents.h"
#define _COMPONENT ACPI_TABLES
ACPI_MODULE_NAME("tbxfload")
/*******************************************************************************
*
* FUNCTION: acpi_load_tables
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Load the ACPI tables from the RSDT/XSDT
*
******************************************************************************/
acpi_status ACPI_INIT_FUNCTION acpi_load_tables(void)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_load_tables);
/*
* Install the default operation region handlers. These are the
* handlers that are defined by the ACPI specification to be
* "always accessible" -- namely, system_memory, system_IO, and
* PCI_Config. This also means that no _REG methods need to be
* run for these address spaces. We need to have these handlers
* installed before any AML code can be executed, especially any
* module-level code (11/2015).
* Note that we allow OSPMs to install their own region handlers
* between acpi_initialize_subsystem() and acpi_load_tables() to use
* their customized default region handlers.
*/
status = acpi_ev_install_region_handlers();
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"During Region initialization"));
return_ACPI_STATUS(status);
}
/* Load the namespace from the tables */
status = acpi_tb_load_namespace();
/* Don't let single failures abort the load */
if (status == AE_CTRL_TERMINATE) {
status = AE_OK;
}
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"While loading namespace from ACPI tables"));
}
/*
* Initialize the objects in the namespace that remain uninitialized.
* This runs the executable AML that may be part of the declaration of
* these name objects:
* operation_regions, buffer_fields, Buffers, and Packages.
*
*/
status = acpi_ns_initialize_objects();
if (ACPI_SUCCESS(status)) {
acpi_gbl_namespace_initialized = TRUE;
}
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL_INIT(acpi_load_tables)
/*******************************************************************************
*
* FUNCTION: acpi_tb_load_namespace
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Load the namespace from the DSDT and all SSDTs/PSDTs found in
* the RSDT/XSDT.
*
******************************************************************************/
acpi_status acpi_tb_load_namespace(void)
{
acpi_status status;
u32 i;
struct acpi_table_header *new_dsdt;
struct acpi_table_desc *table;
u32 tables_loaded = 0;
u32 tables_failed = 0;
ACPI_FUNCTION_TRACE(tb_load_namespace);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/*
* Load the namespace. The DSDT is required, but any SSDT and
* PSDT tables are optional. Verify the DSDT.
*/
table = &acpi_gbl_root_table_list.tables[acpi_gbl_dsdt_index];
if (!acpi_gbl_root_table_list.current_table_count ||
!ACPI_COMPARE_NAMESEG(table->signature.ascii, ACPI_SIG_DSDT) ||
ACPI_FAILURE(acpi_tb_validate_table(table))) {
status = AE_NO_ACPI_TABLES;
goto unlock_and_exit;
}
/*
* Save the DSDT pointer for simple access. This is the mapped memory
* address. We must take care here because the address of the .Tables
* array can change dynamically as tables are loaded at run-time. Note:
* .Pointer field is not validated until after call to acpi_tb_validate_table.
*/
acpi_gbl_DSDT = table->pointer;
/*
* Optionally copy the entire DSDT to local memory (instead of simply
* mapping it.) There are some BIOSs that corrupt or replace the original
* DSDT, creating the need for this option. Default is FALSE, do not copy
* the DSDT.
*/
if (acpi_gbl_copy_dsdt_locally) {
new_dsdt = acpi_tb_copy_dsdt(acpi_gbl_dsdt_index);
if (new_dsdt) {
acpi_gbl_DSDT = new_dsdt;
}
}
/*
* Save the original DSDT header for detection of table corruption
* and/or replacement of the DSDT from outside the OS.
*/
memcpy(&acpi_gbl_original_dsdt_header, acpi_gbl_DSDT,
sizeof(struct acpi_table_header));
/* Load and parse tables */
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
status = acpi_ns_load_table(acpi_gbl_dsdt_index, acpi_gbl_root_node);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "[DSDT] table load failed"));
tables_failed++;
} else {
tables_loaded++;
}
/* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
table = &acpi_gbl_root_table_list.tables[i];
if (!table->address ||
(!ACPI_COMPARE_NAMESEG
(table->signature.ascii, ACPI_SIG_SSDT)
&& !ACPI_COMPARE_NAMESEG(table->signature.ascii,
ACPI_SIG_PSDT)
&& !ACPI_COMPARE_NAMESEG(table->signature.ascii,
ACPI_SIG_OSDT))
|| ACPI_FAILURE(acpi_tb_validate_table(table))) {
continue;
}
/* Ignore errors while loading tables, get as many as possible */
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
status = acpi_ns_load_table(i, acpi_gbl_root_node);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"(%4.4s:%8.8s) while loading table",
table->signature.ascii,
table->pointer->oem_table_id));
tables_failed++;
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
"Table [%4.4s:%8.8s] (id FF) - Table namespace load failed\n\n",
table->signature.ascii,
table->pointer->oem_table_id));
} else {
tables_loaded++;
}
}
if (!tables_failed) {
ACPI_INFO(("%u ACPI AML tables successfully acquired and loaded", tables_loaded));
} else {
ACPI_ERROR((AE_INFO,
"%u table load failures, %u successful",
tables_failed, tables_loaded));
/* Indicate at least one failure */
status = AE_CTRL_TERMINATE;
}
#ifdef ACPI_APPLICATION
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "\n"));
#endif
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_install_table
*
* PARAMETERS: table - Pointer to the ACPI table to be installed.
*
* RETURN: Status
*
* DESCRIPTION: Dynamically install an ACPI table.
* Note: This function should only be invoked after
* acpi_initialize_tables() and before acpi_load_tables().
*
******************************************************************************/
acpi_status ACPI_INIT_FUNCTION
acpi_install_table(struct acpi_table_header *table)
{
acpi_status status;
u32 table_index;
ACPI_FUNCTION_TRACE(acpi_install_table);
status = acpi_tb_install_standard_table(ACPI_PTR_TO_PHYSADDR(table),
ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL,
table, FALSE, FALSE,
&table_index);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL_INIT(acpi_install_table)
/*******************************************************************************
*
* FUNCTION: acpi_install_physical_table
*
* PARAMETERS: address - Address of the ACPI table to be installed.
*
* RETURN: Status
*
* DESCRIPTION: Dynamically install an ACPI table.
* Note: This function should only be invoked after
* acpi_initialize_tables() and before acpi_load_tables().
*
******************************************************************************/
acpi_status ACPI_INIT_FUNCTION
acpi_install_physical_table(acpi_physical_address address)
{
acpi_status status;
u32 table_index;
ACPI_FUNCTION_TRACE(acpi_install_physical_table);
status = acpi_tb_install_standard_table(address,
ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL,
NULL, FALSE, FALSE,
&table_index);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL_INIT(acpi_install_physical_table)
/*******************************************************************************
*
* FUNCTION: acpi_load_table
*
* PARAMETERS: table - Pointer to a buffer containing the ACPI
* table to be loaded.
* table_idx - Pointer to a u32 for storing the table
* index, might be NULL
*
* RETURN: Status
*
* DESCRIPTION: Dynamically load an ACPI table from the caller's buffer. Must
* be a valid ACPI table with a valid ACPI table header.
* Note1: Mainly intended to support hotplug addition of SSDTs.
* Note2: Does not copy the incoming table. User is responsible
* to ensure that the table is not deleted or unmapped.
*
******************************************************************************/
acpi_status acpi_load_table(struct acpi_table_header *table, u32 *table_idx)
{
acpi_status status;
u32 table_index;
ACPI_FUNCTION_TRACE(acpi_load_table);
/* Parameter validation */
if (!table) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Install the table and load it into the namespace */
ACPI_INFO(("Host-directed Dynamic ACPI Table Load:"));
status = acpi_tb_install_and_load_table(ACPI_PTR_TO_PHYSADDR(table),
ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL,
table, FALSE, &table_index);
if (table_idx) {
*table_idx = table_index;
}
if (ACPI_SUCCESS(status)) {
/* Complete the initialization/resolution of new objects */
acpi_ns_initialize_objects();
}
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_load_table)
/*******************************************************************************
*
* FUNCTION: acpi_unload_parent_table
*
* PARAMETERS: object - Handle to any namespace object owned by
* the table to be unloaded
*
* RETURN: Status
*
* DESCRIPTION: Via any namespace object within an SSDT or OEMx table, unloads
* the table and deletes all namespace objects associated with
* that table. Unloading of the DSDT is not allowed.
* Note: Mainly intended to support hotplug removal of SSDTs.
*
******************************************************************************/
acpi_status acpi_unload_parent_table(acpi_handle object)
{
struct acpi_namespace_node *node =
ACPI_CAST_PTR(struct acpi_namespace_node, object);
acpi_status status = AE_NOT_EXIST;
acpi_owner_id owner_id;
u32 i;
ACPI_FUNCTION_TRACE(acpi_unload_parent_table);
/* Parameter validation */
if (!object) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*
* The node owner_id is currently the same as the parent table ID.
* However, this could change in the future.
*/
owner_id = node->owner_id;
if (!owner_id) {
/* owner_id==0 means DSDT is the owner. DSDT cannot be unloaded */
return_ACPI_STATUS(AE_TYPE);
}
/* Must acquire the table lock during this operation */
status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Find the table in the global table list */
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) {
if (owner_id != acpi_gbl_root_table_list.tables[i].owner_id) {
continue;
}
/*
* Allow unload of SSDT and OEMx tables only. Do not allow unload
* of the DSDT. No other types of tables should get here, since
* only these types can contain AML and thus are the only types
* that can create namespace objects.
*/
if (ACPI_COMPARE_NAMESEG
(acpi_gbl_root_table_list.tables[i].signature.ascii,
ACPI_SIG_DSDT)) {
status = AE_TYPE;
break;
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
status = acpi_tb_unload_table(i);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
break;
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_unload_parent_table)
/*******************************************************************************
*
* FUNCTION: acpi_unload_table
*
* PARAMETERS: table_index - Index as returned by acpi_load_table
*
* RETURN: Status
*
* DESCRIPTION: Via the table_index representing an SSDT or OEMx table, unloads
* the table and deletes all namespace objects associated with
* that table. Unloading of the DSDT is not allowed.
* Note: Mainly intended to support hotplug removal of SSDTs.
*
******************************************************************************/
acpi_status acpi_unload_table(u32 table_index)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_unload_table);
if (table_index == 1) {
/* table_index==1 means DSDT is the owner. DSDT cannot be unloaded */
return_ACPI_STATUS(AE_TYPE);
}
status = acpi_tb_unload_table(table_index);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_unload_table)
| linux-master | drivers/acpi/acpica/tbxfload.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: dscontrol - Support for execution control opcodes -
* if/else/while/return
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "amlcode.h"
#include "acdispat.h"
#include "acinterp.h"
#include "acdebug.h"
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dscontrol")
/*******************************************************************************
*
* FUNCTION: acpi_ds_exec_begin_control_op
*
* PARAMETERS: walk_list - The list that owns the walk stack
* op - The control Op
*
* RETURN: Status
*
* DESCRIPTION: Handles all control ops encountered during control method
* execution.
*
******************************************************************************/
acpi_status
acpi_ds_exec_begin_control_op(struct acpi_walk_state *walk_state,
union acpi_parse_object *op)
{
acpi_status status = AE_OK;
union acpi_generic_state *control_state;
ACPI_FUNCTION_NAME(ds_exec_begin_control_op);
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n",
op, op->common.aml_opcode, walk_state));
switch (op->common.aml_opcode) {
case AML_WHILE_OP:
/*
* If this is an additional iteration of a while loop, continue.
* There is no need to allocate a new control state.
*/
if (walk_state->control_state) {
if (walk_state->control_state->control.
aml_predicate_start ==
(walk_state->parser_state.aml - 1)) {
/* Reset the state to start-of-loop */
walk_state->control_state->common.state =
ACPI_CONTROL_CONDITIONAL_EXECUTING;
break;
}
}
ACPI_FALLTHROUGH;
case AML_IF_OP:
/*
* IF/WHILE: Create a new control state to manage these
* constructs. We need to manage these as a stack, in order
* to handle nesting.
*/
control_state = acpi_ut_create_control_state();
if (!control_state) {
status = AE_NO_MEMORY;
break;
}
/*
* Save a pointer to the predicate for multiple executions
* of a loop
*/
control_state->control.aml_predicate_start =
walk_state->parser_state.aml - 1;
control_state->control.package_end =
walk_state->parser_state.pkg_end;
control_state->control.opcode = op->common.aml_opcode;
control_state->control.loop_timeout = acpi_os_get_timer() +
((u64)acpi_gbl_max_loop_iterations * ACPI_100NSEC_PER_SEC);
/* Push the control state on this walk's control stack */
acpi_ut_push_generic_state(&walk_state->control_state,
control_state);
break;
case AML_ELSE_OP:
/* Predicate is in the state object */
/* If predicate is true, the IF was executed, ignore ELSE part */
if (walk_state->last_predicate) {
status = AE_CTRL_TRUE;
}
break;
case AML_RETURN_OP:
break;
default:
break;
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_exec_end_control_op
*
* PARAMETERS: walk_list - The list that owns the walk stack
* op - The control Op
*
* RETURN: Status
*
* DESCRIPTION: Handles all control ops encountered during control method
* execution.
*
******************************************************************************/
acpi_status
acpi_ds_exec_end_control_op(struct acpi_walk_state *walk_state,
union acpi_parse_object *op)
{
acpi_status status = AE_OK;
union acpi_generic_state *control_state;
ACPI_FUNCTION_NAME(ds_exec_end_control_op);
switch (op->common.aml_opcode) {
case AML_IF_OP:
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", op));
/*
* Save the result of the predicate in case there is an
* ELSE to come
*/
walk_state->last_predicate =
(u8)walk_state->control_state->common.value;
/*
* Pop the control state that was created at the start
* of the IF and free it
*/
control_state =
acpi_ut_pop_generic_state(&walk_state->control_state);
acpi_ut_delete_generic_state(control_state);
break;
case AML_ELSE_OP:
break;
case AML_WHILE_OP:
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", op));
control_state = walk_state->control_state;
if (control_state->common.value) {
/* Predicate was true, the body of the loop was just executed */
/*
* This infinite loop detection mechanism allows the interpreter
* to escape possibly infinite loops. This can occur in poorly
* written AML when the hardware does not respond within a while
* loop and the loop does not implement a timeout.
*/
if (ACPI_TIME_AFTER(acpi_os_get_timer(),
control_state->control.
loop_timeout)) {
status = AE_AML_LOOP_TIMEOUT;
break;
}
/*
* Go back and evaluate the predicate and maybe execute the loop
* another time
*/
status = AE_CTRL_PENDING;
walk_state->aml_last_while =
control_state->control.aml_predicate_start;
break;
}
/* Predicate was false, terminate this while loop */
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"[WHILE_OP] termination! Op=%p\n", op));
/* Pop this control state and free it */
control_state =
acpi_ut_pop_generic_state(&walk_state->control_state);
acpi_ut_delete_generic_state(control_state);
break;
case AML_RETURN_OP:
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"[RETURN_OP] Op=%p Arg=%p\n", op,
op->common.value.arg));
/*
* One optional operand -- the return value
* It can be either an immediate operand or a result that
* has been bubbled up the tree
*/
if (op->common.value.arg) {
/* Since we have a real Return(), delete any implicit return */
acpi_ds_clear_implicit_return(walk_state);
/* Return statement has an immediate operand */
status =
acpi_ds_create_operands(walk_state,
op->common.value.arg);
if (ACPI_FAILURE(status)) {
return (status);
}
/*
* If value being returned is a Reference (such as
* an arg or local), resolve it now because it may
* cease to exist at the end of the method.
*/
status =
acpi_ex_resolve_to_value(&walk_state->operands[0],
walk_state);
if (ACPI_FAILURE(status)) {
return (status);
}
/*
* Get the return value and save as the last result
* value. This is the only place where walk_state->return_desc
* is set to anything other than zero!
*/
walk_state->return_desc = walk_state->operands[0];
} else if (walk_state->result_count) {
/* Since we have a real Return(), delete any implicit return */
acpi_ds_clear_implicit_return(walk_state);
/*
* The return value has come from a previous calculation.
*
* If value being returned is a Reference (such as
* an arg or local), resolve it now because it may
* cease to exist at the end of the method.
*
* Allow references created by the Index operator to return
* unchanged.
*/
if ((ACPI_GET_DESCRIPTOR_TYPE
(walk_state->results->results.obj_desc[0]) ==
ACPI_DESC_TYPE_OPERAND)
&& ((walk_state->results->results.obj_desc[0])->
common.type == ACPI_TYPE_LOCAL_REFERENCE)
&& ((walk_state->results->results.obj_desc[0])->
reference.class != ACPI_REFCLASS_INDEX)) {
status =
acpi_ex_resolve_to_value(&walk_state->
results->results.
obj_desc[0],
walk_state);
if (ACPI_FAILURE(status)) {
return (status);
}
}
walk_state->return_desc =
walk_state->results->results.obj_desc[0];
} else {
/* No return operand */
if (walk_state->num_operands) {
acpi_ut_remove_reference(walk_state->
operands[0]);
}
walk_state->operands[0] = NULL;
walk_state->num_operands = 0;
walk_state->return_desc = NULL;
}
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Completed RETURN_OP State=%p, RetVal=%p\n",
walk_state, walk_state->return_desc));
/* End the control method execution right now */
status = AE_CTRL_TERMINATE;
break;
case AML_NOOP_OP:
/* Just do nothing! */
break;
case AML_BREAKPOINT_OP:
acpi_db_signal_break_point(walk_state);
/* Call to the OSL in case OS wants a piece of the action */
status = acpi_os_signal(ACPI_SIGNAL_BREAKPOINT,
"Executed AML Breakpoint opcode");
break;
case AML_BREAK_OP:
case AML_CONTINUE_OP: /* ACPI 2.0 */
/* Pop and delete control states until we find a while */
while (walk_state->control_state &&
(walk_state->control_state->control.opcode !=
AML_WHILE_OP)) {
control_state =
acpi_ut_pop_generic_state(&walk_state->
control_state);
acpi_ut_delete_generic_state(control_state);
}
/* No while found? */
if (!walk_state->control_state) {
return (AE_AML_NO_WHILE);
}
/* Was: walk_state->aml_last_while = walk_state->control_state->Control.aml_predicate_start; */
walk_state->aml_last_while =
walk_state->control_state->control.package_end;
/* Return status depending on opcode */
if (op->common.aml_opcode == AML_BREAK_OP) {
status = AE_CTRL_BREAK;
} else {
status = AE_CTRL_CONTINUE;
}
break;
default:
ACPI_ERROR((AE_INFO, "Unknown control opcode=0x%X Op=%p",
op->common.aml_opcode, op));
status = AE_AML_BAD_OPCODE;
break;
}
return (status);
}
| linux-master | drivers/acpi/acpica/dscontrol.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: utobject - ACPI object create/delete/size/cache routines
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include <linux/kmemleak.h>
#include "accommon.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utobject")
/* Local prototypes */
static acpi_status
acpi_ut_get_simple_object_size(union acpi_operand_object *obj,
acpi_size *obj_length);
static acpi_status
acpi_ut_get_package_object_size(union acpi_operand_object *obj,
acpi_size *obj_length);
static acpi_status
acpi_ut_get_element_length(u8 object_type,
union acpi_operand_object *source_object,
union acpi_generic_state *state, void *context);
/*******************************************************************************
*
* FUNCTION: acpi_ut_create_internal_object_dbg
*
* PARAMETERS: module_name - Source file name of caller
* line_number - Line number of caller
* component_id - Component type of caller
* type - ACPI Type of the new object
*
* RETURN: A new internal object, null on failure
*
* DESCRIPTION: Create and initialize a new internal object.
*
* NOTE: We always allocate the worst-case object descriptor because
* these objects are cached, and we want them to be
* one-size-satisfies-any-request. This in itself may not be
* the most memory efficient, but the efficiency of the object
* cache should more than make up for this!
*
******************************************************************************/
union acpi_operand_object *acpi_ut_create_internal_object_dbg(const char
*module_name,
u32 line_number,
u32 component_id,
acpi_object_type
type)
{
union acpi_operand_object *object;
union acpi_operand_object *second_object;
ACPI_FUNCTION_TRACE_STR(ut_create_internal_object_dbg,
acpi_ut_get_type_name(type));
/* Allocate the raw object descriptor */
object =
acpi_ut_allocate_object_desc_dbg(module_name, line_number,
component_id);
if (!object) {
return_PTR(NULL);
}
kmemleak_not_leak(object);
switch (type) {
case ACPI_TYPE_REGION:
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
/* These types require a secondary object */
second_object =
acpi_ut_allocate_object_desc_dbg(module_name, line_number,
component_id);
if (!second_object) {
acpi_ut_delete_object_desc(object);
return_PTR(NULL);
}
second_object->common.type = ACPI_TYPE_LOCAL_EXTRA;
second_object->common.reference_count = 1;
/* Link the second object to the first */
object->common.next_object = second_object;
break;
default:
/* All others have no secondary object */
break;
}
/* Save the object type in the object descriptor */
object->common.type = (u8) type;
/* Init the reference count */
object->common.reference_count = 1;
/* Any per-type initialization should go here */
return_PTR(object);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_create_package_object
*
* PARAMETERS: count - Number of package elements
*
* RETURN: Pointer to a new Package object, null on failure
*
* DESCRIPTION: Create a fully initialized package object
*
******************************************************************************/
union acpi_operand_object *acpi_ut_create_package_object(u32 count)
{
union acpi_operand_object *package_desc;
union acpi_operand_object **package_elements;
ACPI_FUNCTION_TRACE_U32(ut_create_package_object, count);
/* Create a new Package object */
package_desc = acpi_ut_create_internal_object(ACPI_TYPE_PACKAGE);
if (!package_desc) {
return_PTR(NULL);
}
/*
* Create the element array. Count+1 allows the array to be null
* terminated.
*/
package_elements = ACPI_ALLOCATE_ZEROED(((acpi_size)count +
1) * sizeof(void *));
if (!package_elements) {
ACPI_FREE(package_desc);
return_PTR(NULL);
}
package_desc->package.count = count;
package_desc->package.elements = package_elements;
return_PTR(package_desc);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_create_integer_object
*
* PARAMETERS: initial_value - Initial value for the integer
*
* RETURN: Pointer to a new Integer object, null on failure
*
* DESCRIPTION: Create an initialized integer object
*
******************************************************************************/
union acpi_operand_object *acpi_ut_create_integer_object(u64 initial_value)
{
union acpi_operand_object *integer_desc;
ACPI_FUNCTION_TRACE(ut_create_integer_object);
/* Create and initialize a new integer object */
integer_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!integer_desc) {
return_PTR(NULL);
}
integer_desc->integer.value = initial_value;
return_PTR(integer_desc);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_create_buffer_object
*
* PARAMETERS: buffer_size - Size of buffer to be created
*
* RETURN: Pointer to a new Buffer object, null on failure
*
* DESCRIPTION: Create a fully initialized buffer object
*
******************************************************************************/
union acpi_operand_object *acpi_ut_create_buffer_object(acpi_size buffer_size)
{
union acpi_operand_object *buffer_desc;
u8 *buffer = NULL;
ACPI_FUNCTION_TRACE_U32(ut_create_buffer_object, buffer_size);
/* Create a new Buffer object */
buffer_desc = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER);
if (!buffer_desc) {
return_PTR(NULL);
}
/* Create an actual buffer only if size > 0 */
if (buffer_size > 0) {
/* Allocate the actual buffer */
buffer = ACPI_ALLOCATE_ZEROED(buffer_size);
if (!buffer) {
ACPI_ERROR((AE_INFO, "Could not allocate size %u",
(u32)buffer_size));
acpi_ut_remove_reference(buffer_desc);
return_PTR(NULL);
}
}
/* Complete buffer object initialization */
buffer_desc->buffer.flags |= AOPOBJ_DATA_VALID;
buffer_desc->buffer.pointer = buffer;
buffer_desc->buffer.length = (u32) buffer_size;
/* Return the new buffer descriptor */
return_PTR(buffer_desc);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_create_string_object
*
* PARAMETERS: string_size - Size of string to be created. Does not
* include NULL terminator, this is added
* automatically.
*
* RETURN: Pointer to a new String object
*
* DESCRIPTION: Create a fully initialized string object
*
******************************************************************************/
union acpi_operand_object *acpi_ut_create_string_object(acpi_size string_size)
{
union acpi_operand_object *string_desc;
char *string;
ACPI_FUNCTION_TRACE_U32(ut_create_string_object, string_size);
/* Create a new String object */
string_desc = acpi_ut_create_internal_object(ACPI_TYPE_STRING);
if (!string_desc) {
return_PTR(NULL);
}
/*
* Allocate the actual string buffer -- (Size + 1) for NULL terminator.
* NOTE: Zero-length strings are NULL terminated
*/
string = ACPI_ALLOCATE_ZEROED(string_size + 1);
if (!string) {
ACPI_ERROR((AE_INFO, "Could not allocate size %u",
(u32)string_size));
acpi_ut_remove_reference(string_desc);
return_PTR(NULL);
}
/* Complete string object initialization */
string_desc->string.pointer = string;
string_desc->string.length = (u32) string_size;
/* Return the new string descriptor */
return_PTR(string_desc);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_valid_internal_object
*
* PARAMETERS: object - Object to be validated
*
* RETURN: TRUE if object is valid, FALSE otherwise
*
* DESCRIPTION: Validate a pointer to be of type union acpi_operand_object
*
******************************************************************************/
u8 acpi_ut_valid_internal_object(void *object)
{
ACPI_FUNCTION_NAME(ut_valid_internal_object);
/* Check for a null pointer */
if (!object) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "**** Null Object Ptr\n"));
return (FALSE);
}
/* Check the descriptor type field */
switch (ACPI_GET_DESCRIPTOR_TYPE(object)) {
case ACPI_DESC_TYPE_OPERAND:
/* The object appears to be a valid union acpi_operand_object */
return (TRUE);
default:
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"%p is not an ACPI operand obj [%s]\n",
object, acpi_ut_get_descriptor_name(object)));
break;
}
return (FALSE);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_allocate_object_desc_dbg
*
* PARAMETERS: module_name - Caller's module name (for error output)
* line_number - Caller's line number (for error output)
* component_id - Caller's component ID (for error output)
*
* RETURN: Pointer to newly allocated object descriptor. Null on error
*
* DESCRIPTION: Allocate a new object descriptor. Gracefully handle
* error conditions.
*
******************************************************************************/
void *acpi_ut_allocate_object_desc_dbg(const char *module_name,
u32 line_number, u32 component_id)
{
union acpi_operand_object *object;
ACPI_FUNCTION_TRACE(ut_allocate_object_desc_dbg);
object = acpi_os_acquire_object(acpi_gbl_operand_cache);
if (!object) {
ACPI_ERROR((module_name, line_number,
"Could not allocate an object descriptor"));
return_PTR(NULL);
}
/* Mark the descriptor type */
ACPI_SET_DESCRIPTOR_TYPE(object, ACPI_DESC_TYPE_OPERAND);
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "%p Size %X\n",
object, (u32) sizeof(union acpi_operand_object)));
return_PTR(object);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_delete_object_desc
*
* PARAMETERS: object - An Acpi internal object to be deleted
*
* RETURN: None.
*
* DESCRIPTION: Free an ACPI object descriptor or add it to the object cache
*
******************************************************************************/
void acpi_ut_delete_object_desc(union acpi_operand_object *object)
{
ACPI_FUNCTION_TRACE_PTR(ut_delete_object_desc, object);
/* Object must be of type union acpi_operand_object */
if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) {
ACPI_ERROR((AE_INFO,
"%p is not an ACPI Operand object [%s]", object,
acpi_ut_get_descriptor_name(object)));
return_VOID;
}
(void)acpi_os_release_object(acpi_gbl_operand_cache, object);
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_simple_object_size
*
* PARAMETERS: internal_object - An ACPI operand object
* obj_length - Where the length is returned
*
* RETURN: Status
*
* DESCRIPTION: This function is called to determine the space required to
* contain a simple object for return to an external user.
*
* The length includes the object structure plus any additional
* needed space.
*
******************************************************************************/
static acpi_status
acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object,
acpi_size *obj_length)
{
acpi_size length;
acpi_size size;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE_PTR(ut_get_simple_object_size, internal_object);
/* Start with the length of the (external) Acpi object */
length = sizeof(union acpi_object);
/* A NULL object is allowed, can be a legal uninitialized package element */
if (!internal_object) {
/*
* Object is NULL, just return the length of union acpi_object
* (A NULL union acpi_object is an object of all zeroes.)
*/
*obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length);
return_ACPI_STATUS(AE_OK);
}
/* A Namespace Node should never appear here */
if (ACPI_GET_DESCRIPTOR_TYPE(internal_object) == ACPI_DESC_TYPE_NAMED) {
/* A namespace node should never get here */
ACPI_ERROR((AE_INFO,
"Received a namespace node [%4.4s] "
"where an operand object is required",
ACPI_CAST_PTR(struct acpi_namespace_node,
internal_object)->name.ascii));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
/*
* The final length depends on the object type
* Strings and Buffers are packed right up against the parent object and
* must be accessed bytewise or there may be alignment problems on
* certain processors
*/
switch (internal_object->common.type) {
case ACPI_TYPE_STRING:
length += (acpi_size)internal_object->string.length + 1;
break;
case ACPI_TYPE_BUFFER:
length += (acpi_size)internal_object->buffer.length;
break;
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_POWER:
/* No extra data for these types */
break;
case ACPI_TYPE_LOCAL_REFERENCE:
switch (internal_object->reference.class) {
case ACPI_REFCLASS_NAME:
/*
* Get the actual length of the full pathname to this object.
* The reference will be converted to the pathname to the object
*/
size =
acpi_ns_get_pathname_length(internal_object->
reference.node);
if (!size) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
length += ACPI_ROUND_UP_TO_NATIVE_WORD(size);
break;
default:
/*
* No other reference opcodes are supported.
* Notably, Locals and Args are not supported, but this may be
* required eventually.
*/
ACPI_ERROR((AE_INFO,
"Cannot convert to external object - "
"unsupported Reference Class [%s] 0x%X in object %p",
acpi_ut_get_reference_name(internal_object),
internal_object->reference.class,
internal_object));
status = AE_TYPE;
break;
}
break;
default:
ACPI_ERROR((AE_INFO, "Cannot convert to external object - "
"unsupported type [%s] 0x%X in object %p",
acpi_ut_get_object_type_name(internal_object),
internal_object->common.type, internal_object));
status = AE_TYPE;
break;
}
/*
* Account for the space required by the object rounded up to the next
* multiple of the machine word size. This keeps each object aligned
* on a machine word boundary. (preventing alignment faults on some
* machines.)
*/
*obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_element_length
*
* PARAMETERS: acpi_pkg_callback
*
* RETURN: Status
*
* DESCRIPTION: Get the length of one package element.
*
******************************************************************************/
static acpi_status
acpi_ut_get_element_length(u8 object_type,
union acpi_operand_object *source_object,
union acpi_generic_state *state, void *context)
{
acpi_status status = AE_OK;
struct acpi_pkg_info *info = (struct acpi_pkg_info *)context;
acpi_size object_space;
switch (object_type) {
case ACPI_COPY_TYPE_SIMPLE:
/*
* Simple object - just get the size (Null object/entry is handled
* here also) and sum it into the running package length
*/
status =
acpi_ut_get_simple_object_size(source_object,
&object_space);
if (ACPI_FAILURE(status)) {
return (status);
}
info->length += object_space;
break;
case ACPI_COPY_TYPE_PACKAGE:
/* Package object - nothing much to do here, let the walk handle it */
info->num_packages++;
state->pkg.this_target_obj = NULL;
break;
default:
/* No other types allowed */
return (AE_BAD_PARAMETER);
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_package_object_size
*
* PARAMETERS: internal_object - An ACPI internal object
* obj_length - Where the length is returned
*
* RETURN: Status
*
* DESCRIPTION: This function is called to determine the space required to
* contain a package object for return to an external user.
*
* This is moderately complex since a package contains other
* objects including packages.
*
******************************************************************************/
static acpi_status
acpi_ut_get_package_object_size(union acpi_operand_object *internal_object,
acpi_size *obj_length)
{
acpi_status status;
struct acpi_pkg_info info;
ACPI_FUNCTION_TRACE_PTR(ut_get_package_object_size, internal_object);
info.length = 0;
info.object_space = 0;
info.num_packages = 1;
status =
acpi_ut_walk_package_tree(internal_object, NULL,
acpi_ut_get_element_length, &info);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* We have handled all of the objects in all levels of the package.
* just add the length of the package objects themselves.
* Round up to the next machine word.
*/
info.length +=
ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)) *
(acpi_size)info.num_packages;
/* Return the total package length */
*obj_length = info.length;
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_object_size
*
* PARAMETERS: internal_object - An ACPI internal object
* obj_length - Where the length will be returned
*
* RETURN: Status
*
* DESCRIPTION: This function is called to determine the space required to
* contain an object for return to an API user.
*
******************************************************************************/
acpi_status
acpi_ut_get_object_size(union acpi_operand_object *internal_object,
acpi_size *obj_length)
{
acpi_status status;
ACPI_FUNCTION_ENTRY();
if ((ACPI_GET_DESCRIPTOR_TYPE(internal_object) ==
ACPI_DESC_TYPE_OPERAND) &&
(internal_object->common.type == ACPI_TYPE_PACKAGE)) {
status =
acpi_ut_get_package_object_size(internal_object,
obj_length);
} else {
status =
acpi_ut_get_simple_object_size(internal_object, obj_length);
}
return (status);
}
| linux-master | drivers/acpi/acpica/utobject.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: dsopcode - Dispatcher support for regions and fields
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "amlcode.h"
#include "acdispat.h"
#include "acinterp.h"
#include "acnamesp.h"
#include "acevents.h"
#include "actables.h"
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dsopcode")
/* Local prototypes */
static acpi_status
acpi_ds_init_buffer_field(u16 aml_opcode,
union acpi_operand_object *obj_desc,
union acpi_operand_object *buffer_desc,
union acpi_operand_object *offset_desc,
union acpi_operand_object *length_desc,
union acpi_operand_object *result_desc);
/*******************************************************************************
*
* FUNCTION: acpi_ds_initialize_region
*
* PARAMETERS: obj_handle - Region namespace node
*
* RETURN: Status
*
* DESCRIPTION: Front end to ev_initialize_region
*
******************************************************************************/
acpi_status acpi_ds_initialize_region(acpi_handle obj_handle)
{
union acpi_operand_object *obj_desc;
acpi_status status;
obj_desc = acpi_ns_get_attached_object(obj_handle);
/* Namespace is NOT locked */
status = acpi_ev_initialize_region(obj_desc);
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_init_buffer_field
*
* PARAMETERS: aml_opcode - create_xxx_field
* obj_desc - buffer_field object
* buffer_desc - Host Buffer
* offset_desc - Offset into buffer
* length_desc - Length of field (CREATE_FIELD_OP only)
* result_desc - Where to store the result
*
* RETURN: Status
*
* DESCRIPTION: Perform actual initialization of a buffer field
*
******************************************************************************/
static acpi_status
acpi_ds_init_buffer_field(u16 aml_opcode,
union acpi_operand_object *obj_desc,
union acpi_operand_object *buffer_desc,
union acpi_operand_object *offset_desc,
union acpi_operand_object *length_desc,
union acpi_operand_object *result_desc)
{
u32 offset;
u32 bit_offset;
u32 bit_count;
u8 field_flags;
acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ds_init_buffer_field, obj_desc);
/* Host object must be a Buffer */
if (buffer_desc->common.type != ACPI_TYPE_BUFFER) {
ACPI_ERROR((AE_INFO,
"Target of Create Field is not a Buffer object - %s",
acpi_ut_get_object_type_name(buffer_desc)));
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
/*
* The last parameter to all of these opcodes (result_desc) started
* out as a name_string, and should therefore now be a NS node
* after resolution in acpi_ex_resolve_operands().
*/
if (ACPI_GET_DESCRIPTOR_TYPE(result_desc) != ACPI_DESC_TYPE_NAMED) {
ACPI_ERROR((AE_INFO,
"(%s) destination not a NS Node [%s]",
acpi_ps_get_opcode_name(aml_opcode),
acpi_ut_get_descriptor_name(result_desc)));
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
offset = (u32) offset_desc->integer.value;
/*
* Setup the Bit offsets and counts, according to the opcode
*/
switch (aml_opcode) {
case AML_CREATE_FIELD_OP:
/* Offset is in bits, count is in bits */
field_flags = AML_FIELD_ACCESS_BYTE;
bit_offset = offset;
bit_count = (u32) length_desc->integer.value;
/* Must have a valid (>0) bit count */
if (bit_count == 0) {
ACPI_BIOS_ERROR((AE_INFO,
"Attempt to CreateField of length zero"));
status = AE_AML_OPERAND_VALUE;
goto cleanup;
}
break;
case AML_CREATE_BIT_FIELD_OP:
/* Offset is in bits, Field is one bit */
bit_offset = offset;
bit_count = 1;
field_flags = AML_FIELD_ACCESS_BYTE;
break;
case AML_CREATE_BYTE_FIELD_OP:
/* Offset is in bytes, field is one byte */
bit_offset = 8 * offset;
bit_count = 8;
field_flags = AML_FIELD_ACCESS_BYTE;
break;
case AML_CREATE_WORD_FIELD_OP:
/* Offset is in bytes, field is one word */
bit_offset = 8 * offset;
bit_count = 16;
field_flags = AML_FIELD_ACCESS_WORD;
break;
case AML_CREATE_DWORD_FIELD_OP:
/* Offset is in bytes, field is one dword */
bit_offset = 8 * offset;
bit_count = 32;
field_flags = AML_FIELD_ACCESS_DWORD;
break;
case AML_CREATE_QWORD_FIELD_OP:
/* Offset is in bytes, field is one qword */
bit_offset = 8 * offset;
bit_count = 64;
field_flags = AML_FIELD_ACCESS_QWORD;
break;
default:
ACPI_ERROR((AE_INFO,
"Unknown field creation opcode 0x%02X",
aml_opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
/* Entire field must fit within the current length of the buffer */
if ((bit_offset + bit_count) > (8 * (u32)buffer_desc->buffer.length)) {
status = AE_AML_BUFFER_LIMIT;
ACPI_BIOS_EXCEPTION((AE_INFO, status,
"Field [%4.4s] at bit offset/length %u/%u "
"exceeds size of target Buffer (%u bits)",
acpi_ut_get_node_name(result_desc),
bit_offset, bit_count,
8 * (u32)buffer_desc->buffer.length));
goto cleanup;
}
/*
* Initialize areas of the field object that are common to all fields
* For field_flags, use LOCK_RULE = 0 (NO_LOCK),
* UPDATE_RULE = 0 (UPDATE_PRESERVE)
*/
status =
acpi_ex_prep_common_field_object(obj_desc, field_flags, 0,
bit_offset, bit_count);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
obj_desc->buffer_field.buffer_obj = buffer_desc;
obj_desc->buffer_field.is_create_field =
aml_opcode == AML_CREATE_FIELD_OP;
/* Reference count for buffer_desc inherits obj_desc count */
buffer_desc->common.reference_count = (u16)
(buffer_desc->common.reference_count +
obj_desc->common.reference_count);
cleanup:
/* Always delete the operands */
acpi_ut_remove_reference(offset_desc);
acpi_ut_remove_reference(buffer_desc);
if (aml_opcode == AML_CREATE_FIELD_OP) {
acpi_ut_remove_reference(length_desc);
}
/* On failure, delete the result descriptor */
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference(result_desc); /* Result descriptor */
} else {
/* Now the address and length are valid for this buffer_field */
obj_desc->buffer_field.flags |= AOPOBJ_DATA_VALID;
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_eval_buffer_field_operands
*
* PARAMETERS: walk_state - Current walk
* op - A valid buffer_field Op object
*
* RETURN: Status
*
* DESCRIPTION: Get buffer_field Buffer and Index
* Called from acpi_ds_exec_end_op during buffer_field parse tree walk
*
******************************************************************************/
acpi_status
acpi_ds_eval_buffer_field_operands(struct acpi_walk_state *walk_state,
union acpi_parse_object *op)
{
acpi_status status;
union acpi_operand_object *obj_desc;
struct acpi_namespace_node *node;
union acpi_parse_object *next_op;
ACPI_FUNCTION_TRACE_PTR(ds_eval_buffer_field_operands, op);
/*
* This is where we evaluate the address and length fields of the
* create_xxx_field declaration
*/
node = op->common.node;
/* next_op points to the op that holds the Buffer */
next_op = op->common.value.arg;
/* Evaluate/create the address and length operands */
status = acpi_ds_create_operands(walk_state, next_op);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
/* Resolve the operands */
status =
acpi_ex_resolve_operands(op->common.aml_opcode, ACPI_WALK_OPERANDS,
walk_state);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO, "(%s) bad operand(s), status 0x%X",
acpi_ps_get_opcode_name(op->common.aml_opcode),
status));
return_ACPI_STATUS(status);
}
/* Initialize the Buffer Field */
if (op->common.aml_opcode == AML_CREATE_FIELD_OP) {
/* NOTE: Slightly different operands for this opcode */
status =
acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc,
walk_state->operands[0],
walk_state->operands[1],
walk_state->operands[2],
walk_state->operands[3]);
} else {
/* All other, create_xxx_field opcodes */
status =
acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc,
walk_state->operands[0],
walk_state->operands[1], NULL,
walk_state->operands[2]);
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_eval_region_operands
*
* PARAMETERS: walk_state - Current walk
* op - A valid region Op object
*
* RETURN: Status
*
* DESCRIPTION: Get region address and length
* Called from acpi_ds_exec_end_op during op_region parse tree walk
*
******************************************************************************/
acpi_status
acpi_ds_eval_region_operands(struct acpi_walk_state *walk_state,
union acpi_parse_object *op)
{
acpi_status status;
union acpi_operand_object *obj_desc;
union acpi_operand_object *operand_desc;
struct acpi_namespace_node *node;
union acpi_parse_object *next_op;
acpi_adr_space_type space_id;
ACPI_FUNCTION_TRACE_PTR(ds_eval_region_operands, op);
/*
* This is where we evaluate the address and length fields of the
* op_region declaration
*/
node = op->common.node;
/* next_op points to the op that holds the space_ID */
next_op = op->common.value.arg;
space_id = (acpi_adr_space_type)next_op->common.value.integer;
/* next_op points to address op */
next_op = next_op->common.next;
/* Evaluate/create the address and length operands */
status = acpi_ds_create_operands(walk_state, next_op);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Resolve the length and address operands to numbers */
status =
acpi_ex_resolve_operands(op->common.aml_opcode, ACPI_WALK_OPERANDS,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
/*
* Get the length operand and save it
* (at Top of stack)
*/
operand_desc = walk_state->operands[walk_state->num_operands - 1];
obj_desc->region.length = (u32) operand_desc->integer.value;
acpi_ut_remove_reference(operand_desc);
/* A zero-length operation region is unusable. Just warn */
if (!obj_desc->region.length
&& (space_id < ACPI_NUM_PREDEFINED_REGIONS)) {
ACPI_WARNING((AE_INFO,
"Operation Region [%4.4s] has zero length (SpaceId %X)",
node->name.ascii, space_id));
}
/*
* Get the address and save it
* (at top of stack - 1)
*/
operand_desc = walk_state->operands[walk_state->num_operands - 2];
obj_desc->region.address = (acpi_physical_address)
operand_desc->integer.value;
acpi_ut_remove_reference(operand_desc);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
obj_desc,
ACPI_FORMAT_UINT64(obj_desc->region.address),
obj_desc->region.length));
status = acpi_ut_add_address_range(obj_desc->region.space_id,
obj_desc->region.address,
obj_desc->region.length, node);
/* Now the address and length are valid for this opregion */
obj_desc->region.flags |= AOPOBJ_DATA_VALID;
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_eval_table_region_operands
*
* PARAMETERS: walk_state - Current walk
* op - A valid region Op object
*
* RETURN: Status
*
* DESCRIPTION: Get region address and length.
* Called from acpi_ds_exec_end_op during data_table_region parse
* tree walk.
*
******************************************************************************/
acpi_status
acpi_ds_eval_table_region_operands(struct acpi_walk_state *walk_state,
union acpi_parse_object *op)
{
acpi_status status;
union acpi_operand_object *obj_desc;
union acpi_operand_object **operand;
struct acpi_namespace_node *node;
union acpi_parse_object *next_op;
struct acpi_table_header *table;
u32 table_index;
ACPI_FUNCTION_TRACE_PTR(ds_eval_table_region_operands, op);
/*
* This is where we evaluate the Signature string, oem_id string,
* and oem_table_id string of the Data Table Region declaration
*/
node = op->common.node;
/* next_op points to Signature string op */
next_op = op->common.value.arg;
/*
* Evaluate/create the Signature string, oem_id string,
* and oem_table_id string operands
*/
status = acpi_ds_create_operands(walk_state, next_op);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
operand = &walk_state->operands[0];
/*
* Resolve the Signature string, oem_id string,
* and oem_table_id string operands
*/
status =
acpi_ex_resolve_operands(op->common.aml_opcode, ACPI_WALK_OPERANDS,
walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
/* Find the ACPI table */
status = acpi_tb_find_table(operand[0]->string.pointer,
operand[1]->string.pointer,
operand[2]->string.pointer, &table_index);
if (ACPI_FAILURE(status)) {
if (status == AE_NOT_FOUND) {
ACPI_ERROR((AE_INFO,
"ACPI Table [%4.4s] OEM:(%s, %s) not found in RSDT/XSDT",
operand[0]->string.pointer,
operand[1]->string.pointer,
operand[2]->string.pointer));
}
goto cleanup;
}
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
status = AE_NOT_EXIST;
goto cleanup;
}
obj_desc->region.address = ACPI_PTR_TO_PHYSADDR(table);
obj_desc->region.length = table->length;
obj_desc->region.pointer = table;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
obj_desc,
ACPI_FORMAT_UINT64(obj_desc->region.address),
obj_desc->region.length));
/* Now the address and length are valid for this opregion */
obj_desc->region.flags |= AOPOBJ_DATA_VALID;
cleanup:
acpi_ut_remove_reference(operand[0]);
acpi_ut_remove_reference(operand[1]);
acpi_ut_remove_reference(operand[2]);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_eval_data_object_operands
*
* PARAMETERS: walk_state - Current walk
* op - A valid data_object Op object
* obj_desc - data_object
*
* RETURN: Status
*
* DESCRIPTION: Get the operands and complete the following data object types:
* Buffer, Package.
*
******************************************************************************/
acpi_status
acpi_ds_eval_data_object_operands(struct acpi_walk_state *walk_state,
union acpi_parse_object *op,
union acpi_operand_object *obj_desc)
{
acpi_status status;
union acpi_operand_object *arg_desc;
u32 length;
ACPI_FUNCTION_TRACE(ds_eval_data_object_operands);
/* The first operand (for all of these data objects) is the length */
/*
* Set proper index into operand stack for acpi_ds_obj_stack_push
* invoked inside acpi_ds_create_operand.
*/
walk_state->operand_index = walk_state->num_operands;
/* Ignore if child is not valid */
if (!op->common.value.arg) {
ACPI_ERROR((AE_INFO,
"Missing child while evaluating opcode %4.4X, Op %p",
op->common.aml_opcode, op));
return_ACPI_STATUS(AE_OK);
}
status = acpi_ds_create_operand(walk_state, op->common.value.arg, 1);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_ex_resolve_operands(walk_state->opcode,
&(walk_state->
operands[walk_state->num_operands -
1]), walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Extract length operand */
arg_desc = walk_state->operands[walk_state->num_operands - 1];
length = (u32) arg_desc->integer.value;
/* Cleanup for length operand */
status = acpi_ds_obj_stack_pop(1, walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
acpi_ut_remove_reference(arg_desc);
/*
* Create the actual data object
*/
switch (op->common.aml_opcode) {
case AML_BUFFER_OP:
status =
acpi_ds_build_internal_buffer_obj(walk_state, op, length,
&obj_desc);
break;
case AML_PACKAGE_OP:
case AML_VARIABLE_PACKAGE_OP:
status =
acpi_ds_build_internal_package_obj(walk_state, op, length,
&obj_desc);
break;
default:
return_ACPI_STATUS(AE_AML_BAD_OPCODE);
}
if (ACPI_SUCCESS(status)) {
/*
* Return the object in the walk_state, unless the parent is a package -
* in this case, the return object will be stored in the parse tree
* for the package.
*/
if ((!op->common.parent) ||
((op->common.parent->common.aml_opcode != AML_PACKAGE_OP) &&
(op->common.parent->common.aml_opcode !=
AML_VARIABLE_PACKAGE_OP)
&& (op->common.parent->common.aml_opcode !=
AML_NAME_OP))) {
walk_state->result_obj = obj_desc;
}
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_eval_bank_field_operands
*
* PARAMETERS: walk_state - Current walk
* op - A valid bank_field Op object
*
* RETURN: Status
*
* DESCRIPTION: Get bank_field bank_value
* Called from acpi_ds_exec_end_op during bank_field parse tree walk
*
******************************************************************************/
acpi_status
acpi_ds_eval_bank_field_operands(struct acpi_walk_state *walk_state,
union acpi_parse_object *op)
{
acpi_status status;
union acpi_operand_object *obj_desc;
union acpi_operand_object *operand_desc;
struct acpi_namespace_node *node;
union acpi_parse_object *next_op;
union acpi_parse_object *arg;
ACPI_FUNCTION_TRACE_PTR(ds_eval_bank_field_operands, op);
/*
* This is where we evaluate the bank_value field of the
* bank_field declaration
*/
/* next_op points to the op that holds the Region */
next_op = op->common.value.arg;
/* next_op points to the op that holds the Bank Register */
next_op = next_op->common.next;
/* next_op points to the op that holds the Bank Value */
next_op = next_op->common.next;
/*
* Set proper index into operand stack for acpi_ds_obj_stack_push
* invoked inside acpi_ds_create_operand.
*
* We use walk_state->Operands[0] to store the evaluated bank_value
*/
walk_state->operand_index = 0;
status = acpi_ds_create_operand(walk_state, next_op, 0);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_ex_resolve_to_value(&walk_state->operands[0], walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
ACPI_DUMP_OPERANDS(ACPI_WALK_OPERANDS,
acpi_ps_get_opcode_name(op->common.aml_opcode), 1);
/*
* Get the bank_value operand and save it
* (at Top of stack)
*/
operand_desc = walk_state->operands[0];
/* Arg points to the start Bank Field */
arg = acpi_ps_get_arg(op, 4);
while (arg) {
/* Ignore OFFSET and ACCESSAS terms here */
if (arg->common.aml_opcode == AML_INT_NAMEDFIELD_OP) {
node = arg->common.node;
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
obj_desc->bank_field.value =
(u32) operand_desc->integer.value;
}
/* Move to next field in the list */
arg = arg->common.next;
}
acpi_ut_remove_reference(operand_desc);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/dsopcode.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: hwregs - Read/write access functions for the various ACPI
* control and status registers.
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acevents.h"
#define _COMPONENT ACPI_HARDWARE
ACPI_MODULE_NAME("hwregs")
#if (!ACPI_REDUCED_HARDWARE)
/* Local Prototypes */
static u8
acpi_hw_get_access_bit_width(u64 address,
struct acpi_generic_address *reg,
u8 max_bit_width);
static acpi_status
acpi_hw_read_multiple(u32 *value,
struct acpi_generic_address *register_a,
struct acpi_generic_address *register_b);
static acpi_status
acpi_hw_write_multiple(u32 value,
struct acpi_generic_address *register_a,
struct acpi_generic_address *register_b);
#endif /* !ACPI_REDUCED_HARDWARE */
/******************************************************************************
*
* FUNCTION: acpi_hw_get_access_bit_width
*
* PARAMETERS: address - GAS register address
* reg - GAS register structure
* max_bit_width - Max bit_width supported (32 or 64)
*
* RETURN: Status
*
* DESCRIPTION: Obtain optimal access bit width
*
******************************************************************************/
static u8
acpi_hw_get_access_bit_width(u64 address,
struct acpi_generic_address *reg, u8 max_bit_width)
{
u8 access_bit_width;
/*
* GAS format "register", used by FADT:
* 1. Detected if bit_offset is 0 and bit_width is 8/16/32/64;
* 2. access_size field is ignored and bit_width field is used for
* determining the boundary of the IO accesses.
* GAS format "region", used by APEI registers:
* 1. Detected if bit_offset is not 0 or bit_width is not 8/16/32/64;
* 2. access_size field is used for determining the boundary of the
* IO accesses;
* 3. bit_offset/bit_width fields are used to describe the "region".
*
* Note: This algorithm assumes that the "Address" fields should always
* contain aligned values.
*/
if (!reg->bit_offset && reg->bit_width &&
ACPI_IS_POWER_OF_TWO(reg->bit_width) &&
ACPI_IS_ALIGNED(reg->bit_width, 8)) {
access_bit_width = reg->bit_width;
} else if (reg->access_width) {
access_bit_width = ACPI_ACCESS_BIT_WIDTH(reg->access_width);
} else {
access_bit_width =
ACPI_ROUND_UP_POWER_OF_TWO_8(reg->bit_offset +
reg->bit_width);
if (access_bit_width <= 8) {
access_bit_width = 8;
} else {
while (!ACPI_IS_ALIGNED(address, access_bit_width >> 3)) {
access_bit_width >>= 1;
}
}
}
/* Maximum IO port access bit width is 32 */
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
max_bit_width = 32;
}
/*
* Return access width according to the requested maximum access bit width,
* as the caller should know the format of the register and may enforce
* a 32-bit accesses.
*/
if (access_bit_width < max_bit_width) {
return (access_bit_width);
}
return (max_bit_width);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_validate_register
*
* PARAMETERS: reg - GAS register structure
* max_bit_width - Max bit_width supported (32 or 64)
* address - Pointer to where the gas->address
* is returned
*
* RETURN: Status
*
* DESCRIPTION: Validate the contents of a GAS register. Checks the GAS
* pointer, Address, space_id, bit_width, and bit_offset.
*
******************************************************************************/
acpi_status
acpi_hw_validate_register(struct acpi_generic_address *reg,
u8 max_bit_width, u64 *address)
{
u8 bit_width;
u8 access_width;
/* Must have a valid pointer to a GAS structure */
if (!reg) {
return (AE_BAD_PARAMETER);
}
/*
* Copy the target address. This handles possible alignment issues.
* Address must not be null. A null address also indicates an optional
* ACPI register that is not supported, so no error message.
*/
ACPI_MOVE_64_TO_64(address, ®->address);
if (!(*address)) {
return (AE_BAD_ADDRESS);
}
/* Validate the space_ID */
if ((reg->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) &&
(reg->space_id != ACPI_ADR_SPACE_SYSTEM_IO)) {
ACPI_ERROR((AE_INFO,
"Unsupported address space: 0x%X", reg->space_id));
return (AE_SUPPORT);
}
/* Validate the access_width */
if (reg->access_width > 4) {
ACPI_ERROR((AE_INFO,
"Unsupported register access width: 0x%X",
reg->access_width));
return (AE_SUPPORT);
}
/* Validate the bit_width, convert access_width into number of bits */
access_width =
acpi_hw_get_access_bit_width(*address, reg, max_bit_width);
bit_width =
ACPI_ROUND_UP(reg->bit_offset + reg->bit_width, access_width);
if (max_bit_width < bit_width) {
ACPI_WARNING((AE_INFO,
"Requested bit width 0x%X is smaller than register bit width 0x%X",
max_bit_width, bit_width));
return (AE_SUPPORT);
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_read
*
* PARAMETERS: value - Where the value is returned
* reg - GAS register structure
*
* RETURN: Status
*
* DESCRIPTION: Read from either memory or IO space. This is a 64-bit max
* version of acpi_read.
*
* LIMITATIONS: <These limitations also apply to acpi_hw_write>
* space_ID must be system_memory or system_IO.
*
******************************************************************************/
acpi_status acpi_hw_read(u64 *value, struct acpi_generic_address *reg)
{
u64 address;
u8 access_width;
u32 bit_width;
u8 bit_offset;
u64 value64;
u32 value32;
u8 index;
acpi_status status;
ACPI_FUNCTION_NAME(hw_read);
/* Validate contents of the GAS register */
status = acpi_hw_validate_register(reg, 64, &address);
if (ACPI_FAILURE(status)) {
return (status);
}
/*
* Initialize entire 64-bit return value to zero, convert access_width
* into number of bits based
*/
*value = 0;
access_width = acpi_hw_get_access_bit_width(address, reg, 64);
bit_width = reg->bit_offset + reg->bit_width;
bit_offset = reg->bit_offset;
/*
* Two address spaces supported: Memory or IO. PCI_Config is
* not supported here because the GAS structure is insufficient
*/
index = 0;
while (bit_width) {
if (bit_offset >= access_width) {
value64 = 0;
bit_offset -= access_width;
} else {
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
status =
acpi_os_read_memory((acpi_physical_address)
address +
index *
ACPI_DIV_8
(access_width),
&value64, access_width);
} else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */
status = acpi_hw_read_port((acpi_io_address)
address +
index *
ACPI_DIV_8
(access_width),
&value32,
access_width);
value64 = (u64)value32;
}
}
/*
* Use offset style bit writes because "Index * AccessWidth" is
* ensured to be less than 64-bits by acpi_hw_validate_register().
*/
ACPI_SET_BITS(value, index * access_width,
ACPI_MASK_BITS_ABOVE_64(access_width), value64);
bit_width -=
bit_width > access_width ? access_width : bit_width;
index++;
}
ACPI_DEBUG_PRINT((ACPI_DB_IO,
"Read: %8.8X%8.8X width %2d from %8.8X%8.8X (%s)\n",
ACPI_FORMAT_UINT64(*value), access_width,
ACPI_FORMAT_UINT64(address),
acpi_ut_get_region_name(reg->space_id)));
return (status);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_write
*
* PARAMETERS: value - Value to be written
* reg - GAS register structure
*
* RETURN: Status
*
* DESCRIPTION: Write to either memory or IO space. This is a 64-bit max
* version of acpi_write.
*
******************************************************************************/
acpi_status acpi_hw_write(u64 value, struct acpi_generic_address *reg)
{
u64 address;
u8 access_width;
u32 bit_width;
u8 bit_offset;
u64 value64;
u8 index;
acpi_status status;
ACPI_FUNCTION_NAME(hw_write);
/* Validate contents of the GAS register */
status = acpi_hw_validate_register(reg, 64, &address);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Convert access_width into number of bits based */
access_width = acpi_hw_get_access_bit_width(address, reg, 64);
bit_width = reg->bit_offset + reg->bit_width;
bit_offset = reg->bit_offset;
/*
* Two address spaces supported: Memory or IO. PCI_Config is
* not supported here because the GAS structure is insufficient
*/
index = 0;
while (bit_width) {
/*
* Use offset style bit reads because "Index * AccessWidth" is
* ensured to be less than 64-bits by acpi_hw_validate_register().
*/
value64 = ACPI_GET_BITS(&value, index * access_width,
ACPI_MASK_BITS_ABOVE_64(access_width));
if (bit_offset >= access_width) {
bit_offset -= access_width;
} else {
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
status =
acpi_os_write_memory((acpi_physical_address)
address +
index *
ACPI_DIV_8
(access_width),
value64, access_width);
} else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */
status = acpi_hw_write_port((acpi_io_address)
address +
index *
ACPI_DIV_8
(access_width),
(u32)value64,
access_width);
}
}
/*
* Index * access_width is ensured to be less than 32-bits by
* acpi_hw_validate_register().
*/
bit_width -=
bit_width > access_width ? access_width : bit_width;
index++;
}
ACPI_DEBUG_PRINT((ACPI_DB_IO,
"Wrote: %8.8X%8.8X width %2d to %8.8X%8.8X (%s)\n",
ACPI_FORMAT_UINT64(value), access_width,
ACPI_FORMAT_UINT64(address),
acpi_ut_get_region_name(reg->space_id)));
return (status);
}
#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************
*
* FUNCTION: acpi_hw_clear_acpi_status
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Clears all fixed and general purpose status bits
*
******************************************************************************/
acpi_status acpi_hw_clear_acpi_status(void)
{
acpi_status status;
acpi_cpu_flags lock_flags = 0;
ACPI_FUNCTION_TRACE(hw_clear_acpi_status);
ACPI_DEBUG_PRINT((ACPI_DB_IO, "About to write %04X to %8.8X%8.8X\n",
ACPI_BITMASK_ALL_FIXED_STATUS,
ACPI_FORMAT_UINT64(acpi_gbl_xpm1a_status.address)));
lock_flags = acpi_os_acquire_raw_lock(acpi_gbl_hardware_lock);
/* Clear the fixed events in PM1 A/B */
status = acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS,
ACPI_BITMASK_ALL_FIXED_STATUS);
acpi_os_release_raw_lock(acpi_gbl_hardware_lock, lock_flags);
if (ACPI_FAILURE(status)) {
goto exit;
}
/* Clear the GPE Bits in all GPE registers in all GPE blocks */
status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block, NULL);
exit:
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_hw_get_bit_register_info
*
* PARAMETERS: register_id - Index of ACPI Register to access
*
* RETURN: The bitmask to be used when accessing the register
*
* DESCRIPTION: Map register_id into a register bitmask.
*
******************************************************************************/
struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id)
{
ACPI_FUNCTION_ENTRY();
if (register_id > ACPI_BITREG_MAX) {
ACPI_ERROR((AE_INFO, "Invalid BitRegister ID: 0x%X",
register_id));
return (NULL);
}
return (&acpi_gbl_bit_register_info[register_id]);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_write_pm1_control
*
* PARAMETERS: pm1a_control - Value to be written to PM1A control
* pm1b_control - Value to be written to PM1B control
*
* RETURN: Status
*
* DESCRIPTION: Write the PM1 A/B control registers. These registers are
* different than the PM1 A/B status and enable registers
* in that different values can be written to the A/B registers.
* Most notably, the SLP_TYP bits can be different, as per the
* values returned from the _Sx predefined methods.
*
******************************************************************************/
acpi_status acpi_hw_write_pm1_control(u32 pm1a_control, u32 pm1b_control)
{
acpi_status status;
ACPI_FUNCTION_TRACE(hw_write_pm1_control);
status =
acpi_hw_write(pm1a_control, &acpi_gbl_FADT.xpm1a_control_block);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (acpi_gbl_FADT.xpm1b_control_block.address) {
status =
acpi_hw_write(pm1b_control,
&acpi_gbl_FADT.xpm1b_control_block);
}
return_ACPI_STATUS(status);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_register_read
*
* PARAMETERS: register_id - ACPI Register ID
* return_value - Where the register value is returned
*
* RETURN: Status and the value read.
*
* DESCRIPTION: Read from the specified ACPI register
*
******************************************************************************/
acpi_status acpi_hw_register_read(u32 register_id, u32 *return_value)
{
u32 value = 0;
u64 value64;
acpi_status status;
ACPI_FUNCTION_TRACE(hw_register_read);
switch (register_id) {
case ACPI_REGISTER_PM1_STATUS: /* PM1 A/B: 16-bit access each */
status = acpi_hw_read_multiple(&value,
&acpi_gbl_xpm1a_status,
&acpi_gbl_xpm1b_status);
break;
case ACPI_REGISTER_PM1_ENABLE: /* PM1 A/B: 16-bit access each */
status = acpi_hw_read_multiple(&value,
&acpi_gbl_xpm1a_enable,
&acpi_gbl_xpm1b_enable);
break;
case ACPI_REGISTER_PM1_CONTROL: /* PM1 A/B: 16-bit access each */
status = acpi_hw_read_multiple(&value,
&acpi_gbl_FADT.
xpm1a_control_block,
&acpi_gbl_FADT.
xpm1b_control_block);
/*
* Zero the write-only bits. From the ACPI specification, "Hardware
* Write-Only Bits": "Upon reads to registers with write-only bits,
* software masks out all write-only bits."
*/
value &= ~ACPI_PM1_CONTROL_WRITEONLY_BITS;
break;
case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
status =
acpi_hw_read(&value64, &acpi_gbl_FADT.xpm2_control_block);
if (ACPI_SUCCESS(status)) {
value = (u32)value64;
}
break;
case ACPI_REGISTER_PM_TIMER: /* 32-bit access */
status = acpi_hw_read(&value64, &acpi_gbl_FADT.xpm_timer_block);
if (ACPI_SUCCESS(status)) {
value = (u32)value64;
}
break;
case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */
status =
acpi_hw_read_port(acpi_gbl_FADT.smi_command, &value, 8);
break;
default:
ACPI_ERROR((AE_INFO, "Unknown Register ID: 0x%X", register_id));
status = AE_BAD_PARAMETER;
break;
}
if (ACPI_SUCCESS(status)) {
*return_value = (u32)value;
}
return_ACPI_STATUS(status);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_register_write
*
* PARAMETERS: register_id - ACPI Register ID
* value - The value to write
*
* RETURN: Status
*
* DESCRIPTION: Write to the specified ACPI register
*
* NOTE: In accordance with the ACPI specification, this function automatically
* preserves the value of the following bits, meaning that these bits cannot be
* changed via this interface:
*
* PM1_CONTROL[0] = SCI_EN
* PM1_CONTROL[9]
* PM1_STATUS[11]
*
* ACPI References:
* 1) Hardware Ignored Bits: When software writes to a register with ignored
* bit fields, it preserves the ignored bit fields
* 2) SCI_EN: OSPM always preserves this bit position
*
******************************************************************************/
acpi_status acpi_hw_register_write(u32 register_id, u32 value)
{
acpi_status status;
u32 read_value;
u64 read_value64;
ACPI_FUNCTION_TRACE(hw_register_write);
switch (register_id) {
case ACPI_REGISTER_PM1_STATUS: /* PM1 A/B: 16-bit access each */
/*
* Handle the "ignored" bit in PM1 Status. According to the ACPI
* specification, ignored bits are to be preserved when writing.
* Normally, this would mean a read/modify/write sequence. However,
* preserving a bit in the status register is different. Writing a
* one clears the status, and writing a zero preserves the status.
* Therefore, we must always write zero to the ignored bit.
*
* This behavior is clarified in the ACPI 4.0 specification.
*/
value &= ~ACPI_PM1_STATUS_PRESERVED_BITS;
status = acpi_hw_write_multiple(value,
&acpi_gbl_xpm1a_status,
&acpi_gbl_xpm1b_status);
break;
case ACPI_REGISTER_PM1_ENABLE: /* PM1 A/B: 16-bit access each */
status = acpi_hw_write_multiple(value,
&acpi_gbl_xpm1a_enable,
&acpi_gbl_xpm1b_enable);
break;
case ACPI_REGISTER_PM1_CONTROL: /* PM1 A/B: 16-bit access each */
/*
* Perform a read first to preserve certain bits (per ACPI spec)
* Note: This includes SCI_EN, we never want to change this bit
*/
status = acpi_hw_read_multiple(&read_value,
&acpi_gbl_FADT.
xpm1a_control_block,
&acpi_gbl_FADT.
xpm1b_control_block);
if (ACPI_FAILURE(status)) {
goto exit;
}
/* Insert the bits to be preserved */
ACPI_INSERT_BITS(value, ACPI_PM1_CONTROL_PRESERVED_BITS,
read_value);
/* Now we can write the data */
status = acpi_hw_write_multiple(value,
&acpi_gbl_FADT.
xpm1a_control_block,
&acpi_gbl_FADT.
xpm1b_control_block);
break;
case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
/*
* For control registers, all reserved bits must be preserved,
* as per the ACPI spec.
*/
status =
acpi_hw_read(&read_value64,
&acpi_gbl_FADT.xpm2_control_block);
if (ACPI_FAILURE(status)) {
goto exit;
}
read_value = (u32)read_value64;
/* Insert the bits to be preserved */
ACPI_INSERT_BITS(value, ACPI_PM2_CONTROL_PRESERVED_BITS,
read_value);
status =
acpi_hw_write(value, &acpi_gbl_FADT.xpm2_control_block);
break;
case ACPI_REGISTER_PM_TIMER: /* 32-bit access */
status = acpi_hw_write(value, &acpi_gbl_FADT.xpm_timer_block);
break;
case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */
/* SMI_CMD is currently always in IO space */
status =
acpi_hw_write_port(acpi_gbl_FADT.smi_command, value, 8);
break;
default:
ACPI_ERROR((AE_INFO, "Unknown Register ID: 0x%X", register_id));
status = AE_BAD_PARAMETER;
break;
}
exit:
return_ACPI_STATUS(status);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_read_multiple
*
* PARAMETERS: value - Where the register value is returned
* register_a - First ACPI register (required)
* register_b - Second ACPI register (optional)
*
* RETURN: Status
*
* DESCRIPTION: Read from the specified two-part ACPI register (such as PM1 A/B)
*
******************************************************************************/
static acpi_status
acpi_hw_read_multiple(u32 *value,
struct acpi_generic_address *register_a,
struct acpi_generic_address *register_b)
{
u32 value_a = 0;
u32 value_b = 0;
u64 value64;
acpi_status status;
/* The first register is always required */
status = acpi_hw_read(&value64, register_a);
if (ACPI_FAILURE(status)) {
return (status);
}
value_a = (u32)value64;
/* Second register is optional */
if (register_b->address) {
status = acpi_hw_read(&value64, register_b);
if (ACPI_FAILURE(status)) {
return (status);
}
value_b = (u32)value64;
}
/*
* OR the two return values together. No shifting or masking is necessary,
* because of how the PM1 registers are defined in the ACPI specification:
*
* "Although the bits can be split between the two register blocks (each
* register block has a unique pointer within the FADT), the bit positions
* are maintained. The register block with unimplemented bits (that is,
* those implemented in the other register block) always returns zeros,
* and writes have no side effects"
*/
*value = (value_a | value_b);
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_write_multiple
*
* PARAMETERS: value - The value to write
* register_a - First ACPI register (required)
* register_b - Second ACPI register (optional)
*
* RETURN: Status
*
* DESCRIPTION: Write to the specified two-part ACPI register (such as PM1 A/B)
*
******************************************************************************/
static acpi_status
acpi_hw_write_multiple(u32 value,
struct acpi_generic_address *register_a,
struct acpi_generic_address *register_b)
{
acpi_status status;
/* The first register is always required */
status = acpi_hw_write(value, register_a);
if (ACPI_FAILURE(status)) {
return (status);
}
/*
* Second register is optional
*
* No bit shifting or clearing is necessary, because of how the PM1
* registers are defined in the ACPI specification:
*
* "Although the bits can be split between the two register blocks (each
* register block has a unique pointer within the FADT), the bit positions
* are maintained. The register block with unimplemented bits (that is,
* those implemented in the other register block) always returns zeros,
* and writes have no side effects"
*/
if (register_b->address) {
status = acpi_hw_write(value, register_b);
}
return (status);
}
#endif /* !ACPI_REDUCED_HARDWARE */
| linux-master | drivers/acpi/acpica/hwregs.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: hwpci - Obtain PCI bus, device, and function numbers
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("hwpci")
/* PCI configuration space values */
#define PCI_CFG_HEADER_TYPE_REG 0x0E
#define PCI_CFG_PRIMARY_BUS_NUMBER_REG 0x18
#define PCI_CFG_SECONDARY_BUS_NUMBER_REG 0x19
/* PCI header values */
#define PCI_HEADER_TYPE_MASK 0x7F
#define PCI_TYPE_BRIDGE 0x01
#define PCI_TYPE_CARDBUS_BRIDGE 0x02
typedef struct acpi_pci_device {
acpi_handle device;
struct acpi_pci_device *next;
} acpi_pci_device;
/* Local prototypes */
static acpi_status
acpi_hw_build_pci_list(acpi_handle root_pci_device,
acpi_handle pci_region,
struct acpi_pci_device **return_list_head);
static acpi_status
acpi_hw_process_pci_list(struct acpi_pci_id *pci_id,
struct acpi_pci_device *list_head);
static void acpi_hw_delete_pci_list(struct acpi_pci_device *list_head);
static acpi_status
acpi_hw_get_pci_device_info(struct acpi_pci_id *pci_id,
acpi_handle pci_device,
u16 *bus_number, u8 *is_bridge);
/*******************************************************************************
*
* FUNCTION: acpi_hw_derive_pci_id
*
* PARAMETERS: pci_id - Initial values for the PCI ID. May be
* modified by this function.
* root_pci_device - A handle to a PCI device object. This
* object must be a PCI Root Bridge having a
* _HID value of either PNP0A03 or PNP0A08
* pci_region - A handle to a PCI configuration space
* Operation Region being initialized
*
* RETURN: Status
*
* DESCRIPTION: This function derives a full PCI ID for a PCI device,
* consisting of a Segment number, Bus number, Device number,
* and function code.
*
* The PCI hardware dynamically configures PCI bus numbers
* depending on the bus topology discovered during system
* initialization. This function is invoked during configuration
* of a PCI_Config Operation Region in order to (possibly) update
* the Bus/Device/Function numbers in the pci_id with the actual
* values as determined by the hardware and operating system
* configuration.
*
* The pci_id parameter is initially populated during the Operation
* Region initialization. This function is then called, and is
* will make any necessary modifications to the Bus, Device, or
* Function number PCI ID subfields as appropriate for the
* current hardware and OS configuration.
*
* NOTE: Created 08/2010. Replaces the previous OSL acpi_os_derive_pci_id
* interface since this feature is OS-independent. This module
* specifically avoids any use of recursion by building a local
* temporary device list.
*
******************************************************************************/
acpi_status
acpi_hw_derive_pci_id(struct acpi_pci_id *pci_id,
acpi_handle root_pci_device, acpi_handle pci_region)
{
acpi_status status;
struct acpi_pci_device *list_head;
ACPI_FUNCTION_TRACE(hw_derive_pci_id);
if (!pci_id) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Build a list of PCI devices, from pci_region up to root_pci_device */
status =
acpi_hw_build_pci_list(root_pci_device, pci_region, &list_head);
if (ACPI_SUCCESS(status)) {
/* Walk the list, updating the PCI device/function/bus numbers */
status = acpi_hw_process_pci_list(pci_id, list_head);
/* Delete the list */
acpi_hw_delete_pci_list(list_head);
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_hw_build_pci_list
*
* PARAMETERS: root_pci_device - A handle to a PCI device object. This
* object is guaranteed to be a PCI Root
* Bridge having a _HID value of either
* PNP0A03 or PNP0A08
* pci_region - A handle to the PCI configuration space
* Operation Region
* return_list_head - Where the PCI device list is returned
*
* RETURN: Status
*
* DESCRIPTION: Builds a list of devices from the input PCI region up to the
* Root PCI device for this namespace subtree.
*
******************************************************************************/
static acpi_status
acpi_hw_build_pci_list(acpi_handle root_pci_device,
acpi_handle pci_region,
struct acpi_pci_device **return_list_head)
{
acpi_handle current_device;
acpi_handle parent_device;
acpi_status status;
struct acpi_pci_device *list_element;
/*
* Ascend namespace branch until the root_pci_device is reached, building
* a list of device nodes. Loop will exit when either the PCI device is
* found, or the root of the namespace is reached.
*/
*return_list_head = NULL;
current_device = pci_region;
while (1) {
status = acpi_get_parent(current_device, &parent_device);
if (ACPI_FAILURE(status)) {
/* Must delete the list before exit */
acpi_hw_delete_pci_list(*return_list_head);
return (status);
}
/* Finished when we reach the PCI root device (PNP0A03 or PNP0A08) */
if (parent_device == root_pci_device) {
return (AE_OK);
}
list_element = ACPI_ALLOCATE(sizeof(struct acpi_pci_device));
if (!list_element) {
/* Must delete the list before exit */
acpi_hw_delete_pci_list(*return_list_head);
return (AE_NO_MEMORY);
}
/* Put new element at the head of the list */
list_element->next = *return_list_head;
list_element->device = parent_device;
*return_list_head = list_element;
current_device = parent_device;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_hw_process_pci_list
*
* PARAMETERS: pci_id - Initial values for the PCI ID. May be
* modified by this function.
* list_head - Device list created by
* acpi_hw_build_pci_list
*
* RETURN: Status
*
* DESCRIPTION: Walk downward through the PCI device list, getting the device
* info for each, via the PCI configuration space and updating
* the PCI ID as necessary. Deletes the list during traversal.
*
******************************************************************************/
static acpi_status
acpi_hw_process_pci_list(struct acpi_pci_id *pci_id,
struct acpi_pci_device *list_head)
{
acpi_status status = AE_OK;
struct acpi_pci_device *info;
u16 bus_number;
u8 is_bridge = TRUE;
ACPI_FUNCTION_NAME(hw_process_pci_list);
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Input PciId: Seg %4.4X Bus %4.4X Dev %4.4X Func %4.4X\n",
pci_id->segment, pci_id->bus, pci_id->device,
pci_id->function));
bus_number = pci_id->bus;
/*
* Descend down the namespace tree, collecting PCI device, function,
* and bus numbers. bus_number is only important for PCI bridges.
* Algorithm: As we descend the tree, use the last valid PCI device,
* function, and bus numbers that are discovered, and assign them
* to the PCI ID for the target device.
*/
info = list_head;
while (info) {
status = acpi_hw_get_pci_device_info(pci_id, info->device,
&bus_number, &is_bridge);
if (ACPI_FAILURE(status)) {
return (status);
}
info = info->next;
}
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Output PciId: Seg %4.4X Bus %4.4X Dev %4.4X Func %4.4X "
"Status %X BusNumber %X IsBridge %X\n",
pci_id->segment, pci_id->bus, pci_id->device,
pci_id->function, status, bus_number, is_bridge));
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_hw_delete_pci_list
*
* PARAMETERS: list_head - Device list created by
* acpi_hw_build_pci_list
*
* RETURN: None
*
* DESCRIPTION: Free the entire PCI list.
*
******************************************************************************/
static void acpi_hw_delete_pci_list(struct acpi_pci_device *list_head)
{
struct acpi_pci_device *next;
struct acpi_pci_device *previous;
next = list_head;
while (next) {
previous = next;
next = previous->next;
ACPI_FREE(previous);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_hw_get_pci_device_info
*
* PARAMETERS: pci_id - Initial values for the PCI ID. May be
* modified by this function.
* pci_device - Handle for the PCI device object
* bus_number - Where a PCI bridge bus number is returned
* is_bridge - Return value, indicates if this PCI
* device is a PCI bridge
*
* RETURN: Status
*
* DESCRIPTION: Get the device info for a single PCI device object. Get the
* _ADR (contains PCI device and function numbers), and for PCI
* bridge devices, get the bus number from PCI configuration
* space.
*
******************************************************************************/
static acpi_status
acpi_hw_get_pci_device_info(struct acpi_pci_id *pci_id,
acpi_handle pci_device,
u16 *bus_number, u8 *is_bridge)
{
acpi_status status;
acpi_object_type object_type;
u64 return_value;
u64 pci_value;
/* We only care about objects of type Device */
status = acpi_get_type(pci_device, &object_type);
if (ACPI_FAILURE(status)) {
return (status);
}
if (object_type != ACPI_TYPE_DEVICE) {
return (AE_OK);
}
/* We need an _ADR. Ignore device if not present */
status = acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR,
pci_device, &return_value);
if (ACPI_FAILURE(status)) {
return (AE_OK);
}
/*
* From _ADR, get the PCI Device and Function and
* update the PCI ID.
*/
pci_id->device = ACPI_HIWORD(ACPI_LODWORD(return_value));
pci_id->function = ACPI_LOWORD(ACPI_LODWORD(return_value));
/*
* If the previous device was a bridge, use the previous
* device bus number
*/
if (*is_bridge) {
pci_id->bus = *bus_number;
}
/*
* Get the bus numbers from PCI Config space:
*
* First, get the PCI header_type
*/
*is_bridge = FALSE;
status = acpi_os_read_pci_configuration(pci_id,
PCI_CFG_HEADER_TYPE_REG,
&pci_value, 8);
if (ACPI_FAILURE(status)) {
return (status);
}
/* We only care about bridges (1=pci_bridge, 2=card_bus_bridge) */
pci_value &= PCI_HEADER_TYPE_MASK;
if ((pci_value != PCI_TYPE_BRIDGE) &&
(pci_value != PCI_TYPE_CARDBUS_BRIDGE)) {
return (AE_OK);
}
/* Bridge: Get the Primary bus_number */
status = acpi_os_read_pci_configuration(pci_id,
PCI_CFG_PRIMARY_BUS_NUMBER_REG,
&pci_value, 8);
if (ACPI_FAILURE(status)) {
return (status);
}
*is_bridge = TRUE;
pci_id->bus = (u16)pci_value;
/* Bridge: Get the Secondary bus_number */
status = acpi_os_read_pci_configuration(pci_id,
PCI_CFG_SECONDARY_BUS_NUMBER_REG,
&pci_value, 8);
if (ACPI_FAILURE(status)) {
return (status);
}
*bus_number = (u16)pci_value;
return (AE_OK);
}
| linux-master | drivers/acpi/acpica/hwpci.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: dbconvert - debugger miscellaneous conversion routines
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdebug.h"
#define _COMPONENT ACPI_CA_DEBUGGER
ACPI_MODULE_NAME("dbconvert")
#define DB_DEFAULT_PKG_ELEMENTS 33
/*******************************************************************************
*
* FUNCTION: acpi_db_hex_char_to_value
*
* PARAMETERS: hex_char - Ascii Hex digit, 0-9|a-f|A-F
* return_value - Where the converted value is returned
*
* RETURN: Status
*
* DESCRIPTION: Convert a single hex character to a 4-bit number (0-16).
*
******************************************************************************/
acpi_status acpi_db_hex_char_to_value(int hex_char, u8 *return_value)
{
u8 value;
/* Digit must be ascii [0-9a-fA-F] */
if (!isxdigit(hex_char)) {
return (AE_BAD_HEX_CONSTANT);
}
if (hex_char <= 0x39) {
value = (u8)(hex_char - 0x30);
} else {
value = (u8)(toupper(hex_char) - 0x37);
}
*return_value = value;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_hex_byte_to_binary
*
* PARAMETERS: hex_byte - Double hex digit (0x00 - 0xFF) in format:
* hi_byte then lo_byte.
* return_value - Where the converted value is returned
*
* RETURN: Status
*
* DESCRIPTION: Convert two hex characters to an 8 bit number (0 - 255).
*
******************************************************************************/
static acpi_status acpi_db_hex_byte_to_binary(char *hex_byte, u8 *return_value)
{
u8 local0;
u8 local1;
acpi_status status;
/* High byte */
status = acpi_db_hex_char_to_value(hex_byte[0], &local0);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Low byte */
status = acpi_db_hex_char_to_value(hex_byte[1], &local1);
if (ACPI_FAILURE(status)) {
return (status);
}
*return_value = (u8)((local0 << 4) | local1);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_convert_to_buffer
*
* PARAMETERS: string - Input string to be converted
* object - Where the buffer object is returned
*
* RETURN: Status
*
* DESCRIPTION: Convert a string to a buffer object. String is treated a list
* of buffer elements, each separated by a space or comma.
*
******************************************************************************/
static acpi_status
acpi_db_convert_to_buffer(char *string, union acpi_object *object)
{
u32 i;
u32 j;
u32 length;
u8 *buffer;
acpi_status status;
/* Skip all preceding white space */
acpi_ut_remove_whitespace(&string);
/* Generate the final buffer length */
for (i = 0, length = 0; string[i];) {
i += 2;
length++;
while (string[i] && ((string[i] == ',') || (string[i] == ' '))) {
i++;
}
}
buffer = ACPI_ALLOCATE(length);
if (!buffer) {
return (AE_NO_MEMORY);
}
/* Convert the command line bytes to the buffer */
for (i = 0, j = 0; string[i];) {
status = acpi_db_hex_byte_to_binary(&string[i], &buffer[j]);
if (ACPI_FAILURE(status)) {
ACPI_FREE(buffer);
return (status);
}
j++;
i += 2;
while (string[i] && ((string[i] == ',') || (string[i] == ' '))) {
i++;
}
}
object->type = ACPI_TYPE_BUFFER;
object->buffer.pointer = buffer;
object->buffer.length = length;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_convert_to_package
*
* PARAMETERS: string - Input string to be converted
* object - Where the package object is returned
*
* RETURN: Status
*
* DESCRIPTION: Convert a string to a package object. Handles nested packages
* via recursion with acpi_db_convert_to_object.
*
******************************************************************************/
acpi_status acpi_db_convert_to_package(char *string, union acpi_object *object)
{
char *this;
char *next;
u32 i;
acpi_object_type type;
union acpi_object *elements;
acpi_status status;
elements =
ACPI_ALLOCATE_ZEROED(DB_DEFAULT_PKG_ELEMENTS *
sizeof(union acpi_object));
this = string;
for (i = 0; i < (DB_DEFAULT_PKG_ELEMENTS - 1); i++) {
this = acpi_db_get_next_token(this, &next, &type);
if (!this) {
break;
}
/* Recursive call to convert each package element */
status = acpi_db_convert_to_object(type, this, &elements[i]);
if (ACPI_FAILURE(status)) {
acpi_db_delete_objects(i + 1, elements);
ACPI_FREE(elements);
return (status);
}
this = next;
}
object->type = ACPI_TYPE_PACKAGE;
object->package.count = i;
object->package.elements = elements;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_convert_to_object
*
* PARAMETERS: type - Object type as determined by parser
* string - Input string to be converted
* object - Where the new object is returned
*
* RETURN: Status
*
* DESCRIPTION: Convert a typed and tokenized string to a union acpi_object. Typing:
* 1) String objects were surrounded by quotes.
* 2) Buffer objects were surrounded by parentheses.
* 3) Package objects were surrounded by brackets "[]".
* 4) All standalone tokens are treated as integers.
*
******************************************************************************/
acpi_status
acpi_db_convert_to_object(acpi_object_type type,
char *string, union acpi_object *object)
{
acpi_status status = AE_OK;
switch (type) {
case ACPI_TYPE_STRING:
object->type = ACPI_TYPE_STRING;
object->string.pointer = string;
object->string.length = (u32)strlen(string);
break;
case ACPI_TYPE_BUFFER:
status = acpi_db_convert_to_buffer(string, object);
break;
case ACPI_TYPE_PACKAGE:
status = acpi_db_convert_to_package(string, object);
break;
default:
object->type = ACPI_TYPE_INTEGER;
status = acpi_ut_strtoul64(string, &object->integer.value);
break;
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_encode_pld_buffer
*
* PARAMETERS: pld_info - _PLD buffer struct (Using local struct)
*
* RETURN: Encode _PLD buffer suitable for return value from _PLD
*
* DESCRIPTION: Bit-packs a _PLD buffer struct. Used to test the _PLD macros
*
******************************************************************************/
u8 *acpi_db_encode_pld_buffer(struct acpi_pld_info *pld_info)
{
u32 *buffer;
u32 dword;
buffer = ACPI_ALLOCATE_ZEROED(ACPI_PLD_BUFFER_SIZE);
if (!buffer) {
return (NULL);
}
/* First 32 bits */
dword = 0;
ACPI_PLD_SET_REVISION(&dword, pld_info->revision);
ACPI_PLD_SET_IGNORE_COLOR(&dword, pld_info->ignore_color);
ACPI_PLD_SET_RED(&dword, pld_info->red);
ACPI_PLD_SET_GREEN(&dword, pld_info->green);
ACPI_PLD_SET_BLUE(&dword, pld_info->blue);
ACPI_MOVE_32_TO_32(&buffer[0], &dword);
/* Second 32 bits */
dword = 0;
ACPI_PLD_SET_WIDTH(&dword, pld_info->width);
ACPI_PLD_SET_HEIGHT(&dword, pld_info->height);
ACPI_MOVE_32_TO_32(&buffer[1], &dword);
/* Third 32 bits */
dword = 0;
ACPI_PLD_SET_USER_VISIBLE(&dword, pld_info->user_visible);
ACPI_PLD_SET_DOCK(&dword, pld_info->dock);
ACPI_PLD_SET_LID(&dword, pld_info->lid);
ACPI_PLD_SET_PANEL(&dword, pld_info->panel);
ACPI_PLD_SET_VERTICAL(&dword, pld_info->vertical_position);
ACPI_PLD_SET_HORIZONTAL(&dword, pld_info->horizontal_position);
ACPI_PLD_SET_SHAPE(&dword, pld_info->shape);
ACPI_PLD_SET_ORIENTATION(&dword, pld_info->group_orientation);
ACPI_PLD_SET_TOKEN(&dword, pld_info->group_token);
ACPI_PLD_SET_POSITION(&dword, pld_info->group_position);
ACPI_PLD_SET_BAY(&dword, pld_info->bay);
ACPI_MOVE_32_TO_32(&buffer[2], &dword);
/* Fourth 32 bits */
dword = 0;
ACPI_PLD_SET_EJECTABLE(&dword, pld_info->ejectable);
ACPI_PLD_SET_OSPM_EJECT(&dword, pld_info->ospm_eject_required);
ACPI_PLD_SET_CABINET(&dword, pld_info->cabinet_number);
ACPI_PLD_SET_CARD_CAGE(&dword, pld_info->card_cage_number);
ACPI_PLD_SET_REFERENCE(&dword, pld_info->reference);
ACPI_PLD_SET_ROTATION(&dword, pld_info->rotation);
ACPI_PLD_SET_ORDER(&dword, pld_info->order);
ACPI_MOVE_32_TO_32(&buffer[3], &dword);
if (pld_info->revision >= 2) {
/* Fifth 32 bits */
dword = 0;
ACPI_PLD_SET_VERT_OFFSET(&dword, pld_info->vertical_offset);
ACPI_PLD_SET_HORIZ_OFFSET(&dword, pld_info->horizontal_offset);
ACPI_MOVE_32_TO_32(&buffer[4], &dword);
}
return (ACPI_CAST_PTR(u8, buffer));
}
/*******************************************************************************
*
* FUNCTION: acpi_db_dump_pld_buffer
*
* PARAMETERS: obj_desc - Object returned from _PLD method
*
* RETURN: None.
*
* DESCRIPTION: Dumps formatted contents of a _PLD return buffer.
*
******************************************************************************/
#define ACPI_PLD_OUTPUT "%20s : %-6X\n"
void acpi_db_dump_pld_buffer(union acpi_object *obj_desc)
{
union acpi_object *buffer_desc;
struct acpi_pld_info *pld_info;
u8 *new_buffer;
acpi_status status;
/* Object must be of type Package with at least one Buffer element */
if (obj_desc->type != ACPI_TYPE_PACKAGE) {
return;
}
buffer_desc = &obj_desc->package.elements[0];
if (buffer_desc->type != ACPI_TYPE_BUFFER) {
return;
}
/* Convert _PLD buffer to local _PLD struct */
status = acpi_decode_pld_buffer(buffer_desc->buffer.pointer,
buffer_desc->buffer.length, &pld_info);
if (ACPI_FAILURE(status)) {
return;
}
/* Encode local _PLD struct back to a _PLD buffer */
new_buffer = acpi_db_encode_pld_buffer(pld_info);
if (!new_buffer) {
goto exit;
}
/* The two bit-packed buffers should match */
if (memcmp(new_buffer, buffer_desc->buffer.pointer,
buffer_desc->buffer.length)) {
acpi_os_printf
("Converted _PLD buffer does not compare. New:\n");
acpi_ut_dump_buffer(new_buffer,
buffer_desc->buffer.length, DB_BYTE_DISPLAY,
0);
}
/* First 32-bit dword */
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Revision", pld_info->revision);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_IgnoreColor",
pld_info->ignore_color);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Red", pld_info->red);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Green", pld_info->green);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Blue", pld_info->blue);
/* Second 32-bit dword */
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Width", pld_info->width);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Height", pld_info->height);
/* Third 32-bit dword */
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_UserVisible",
pld_info->user_visible);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Dock", pld_info->dock);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Lid", pld_info->lid);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Panel", pld_info->panel);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_VerticalPosition",
pld_info->vertical_position);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_HorizontalPosition",
pld_info->horizontal_position);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Shape", pld_info->shape);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupOrientation",
pld_info->group_orientation);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupToken",
pld_info->group_token);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupPosition",
pld_info->group_position);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Bay", pld_info->bay);
/* Fourth 32-bit dword */
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Ejectable", pld_info->ejectable);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_EjectRequired",
pld_info->ospm_eject_required);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_CabinetNumber",
pld_info->cabinet_number);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_CardCageNumber",
pld_info->card_cage_number);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Reference", pld_info->reference);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Rotation", pld_info->rotation);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Order", pld_info->order);
/* Fifth 32-bit dword */
if (buffer_desc->buffer.length > 16) {
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_VerticalOffset",
pld_info->vertical_offset);
acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_HorizontalOffset",
pld_info->horizontal_offset);
}
ACPI_FREE(new_buffer);
exit:
ACPI_FREE(pld_info);
}
| linux-master | drivers/acpi/acpica/dbconvert.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: utresrc - Resource management utilities
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acresrc.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utresrc")
/*
* Base sizes of the raw AML resource descriptors, indexed by resource type.
* Zero indicates a reserved (and therefore invalid) resource type.
*/
const u8 acpi_gbl_resource_aml_sizes[] = {
/* Small descriptors */
0,
0,
0,
0,
ACPI_AML_SIZE_SMALL(struct aml_resource_irq),
ACPI_AML_SIZE_SMALL(struct aml_resource_dma),
ACPI_AML_SIZE_SMALL(struct aml_resource_start_dependent),
ACPI_AML_SIZE_SMALL(struct aml_resource_end_dependent),
ACPI_AML_SIZE_SMALL(struct aml_resource_io),
ACPI_AML_SIZE_SMALL(struct aml_resource_fixed_io),
ACPI_AML_SIZE_SMALL(struct aml_resource_fixed_dma),
0,
0,
0,
ACPI_AML_SIZE_SMALL(struct aml_resource_vendor_small),
ACPI_AML_SIZE_SMALL(struct aml_resource_end_tag),
/* Large descriptors */
0,
ACPI_AML_SIZE_LARGE(struct aml_resource_memory24),
ACPI_AML_SIZE_LARGE(struct aml_resource_generic_register),
0,
ACPI_AML_SIZE_LARGE(struct aml_resource_vendor_large),
ACPI_AML_SIZE_LARGE(struct aml_resource_memory32),
ACPI_AML_SIZE_LARGE(struct aml_resource_fixed_memory32),
ACPI_AML_SIZE_LARGE(struct aml_resource_address32),
ACPI_AML_SIZE_LARGE(struct aml_resource_address16),
ACPI_AML_SIZE_LARGE(struct aml_resource_extended_irq),
ACPI_AML_SIZE_LARGE(struct aml_resource_address64),
ACPI_AML_SIZE_LARGE(struct aml_resource_extended_address64),
ACPI_AML_SIZE_LARGE(struct aml_resource_gpio),
ACPI_AML_SIZE_LARGE(struct aml_resource_pin_function),
ACPI_AML_SIZE_LARGE(struct aml_resource_common_serialbus),
ACPI_AML_SIZE_LARGE(struct aml_resource_pin_config),
ACPI_AML_SIZE_LARGE(struct aml_resource_pin_group),
ACPI_AML_SIZE_LARGE(struct aml_resource_pin_group_function),
ACPI_AML_SIZE_LARGE(struct aml_resource_pin_group_config),
ACPI_AML_SIZE_LARGE(struct aml_resource_clock_input),
};
const u8 acpi_gbl_resource_aml_serial_bus_sizes[] = {
0,
ACPI_AML_SIZE_LARGE(struct aml_resource_i2c_serialbus),
ACPI_AML_SIZE_LARGE(struct aml_resource_spi_serialbus),
ACPI_AML_SIZE_LARGE(struct aml_resource_uart_serialbus),
ACPI_AML_SIZE_LARGE(struct aml_resource_csi2_serialbus),
};
/*
* Resource types, used to validate the resource length field.
* The length of fixed-length types must match exactly, variable
* lengths must meet the minimum required length, etc.
* Zero indicates a reserved (and therefore invalid) resource type.
*/
static const u8 acpi_gbl_resource_types[] = {
/* Small descriptors */
0,
0,
0,
0,
ACPI_SMALL_VARIABLE_LENGTH, /* 04 IRQ */
ACPI_FIXED_LENGTH, /* 05 DMA */
ACPI_SMALL_VARIABLE_LENGTH, /* 06 start_dependent_functions */
ACPI_FIXED_LENGTH, /* 07 end_dependent_functions */
ACPI_FIXED_LENGTH, /* 08 IO */
ACPI_FIXED_LENGTH, /* 09 fixed_IO */
ACPI_FIXED_LENGTH, /* 0A fixed_DMA */
0,
0,
0,
ACPI_VARIABLE_LENGTH, /* 0E vendor_short */
ACPI_FIXED_LENGTH, /* 0F end_tag */
/* Large descriptors */
0,
ACPI_FIXED_LENGTH, /* 01 Memory24 */
ACPI_FIXED_LENGTH, /* 02 generic_register */
0,
ACPI_VARIABLE_LENGTH, /* 04 vendor_long */
ACPI_FIXED_LENGTH, /* 05 Memory32 */
ACPI_FIXED_LENGTH, /* 06 memory32_fixed */
ACPI_VARIABLE_LENGTH, /* 07 Dword* address */
ACPI_VARIABLE_LENGTH, /* 08 Word* address */
ACPI_VARIABLE_LENGTH, /* 09 extended_IRQ */
ACPI_VARIABLE_LENGTH, /* 0A Qword* address */
ACPI_FIXED_LENGTH, /* 0B Extended* address */
ACPI_VARIABLE_LENGTH, /* 0C Gpio* */
ACPI_VARIABLE_LENGTH, /* 0D pin_function */
ACPI_VARIABLE_LENGTH, /* 0E *serial_bus */
ACPI_VARIABLE_LENGTH, /* 0F pin_config */
ACPI_VARIABLE_LENGTH, /* 10 pin_group */
ACPI_VARIABLE_LENGTH, /* 11 pin_group_function */
ACPI_VARIABLE_LENGTH, /* 12 pin_group_config */
ACPI_VARIABLE_LENGTH, /* 13 clock_input */
};
/*******************************************************************************
*
* FUNCTION: acpi_ut_walk_aml_resources
*
* PARAMETERS: walk_state - Current walk info
* PARAMETERS: aml - Pointer to the raw AML resource template
* aml_length - Length of the entire template
* user_function - Called once for each descriptor found. If
* NULL, a pointer to the end_tag is returned
* context - Passed to user_function
*
* RETURN: Status
*
* DESCRIPTION: Walk a raw AML resource list(buffer). User function called
* once for each resource found.
*
******************************************************************************/
acpi_status
acpi_ut_walk_aml_resources(struct acpi_walk_state *walk_state,
u8 *aml,
acpi_size aml_length,
acpi_walk_aml_callback user_function, void **context)
{
acpi_status status;
u8 *end_aml;
u8 resource_index;
u32 length;
u32 offset = 0;
u8 end_tag[2] = { 0x79, 0x00 };
ACPI_FUNCTION_TRACE(ut_walk_aml_resources);
/* The absolute minimum resource template is one end_tag descriptor */
if (aml_length < sizeof(struct aml_resource_end_tag)) {
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
/* Point to the end of the resource template buffer */
end_aml = aml + aml_length;
/* Walk the byte list, abort on any invalid descriptor type or length */
while (aml < end_aml) {
/* Validate the Resource Type and Resource Length */
status =
acpi_ut_validate_resource(walk_state, aml, &resource_index);
if (ACPI_FAILURE(status)) {
/*
* Exit on failure. Cannot continue because the descriptor
* length may be bogus also.
*/
return_ACPI_STATUS(status);
}
/* Get the length of this descriptor */
length = acpi_ut_get_descriptor_length(aml);
/* Invoke the user function */
if (user_function) {
status =
user_function(aml, length, offset, resource_index,
context);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/* An end_tag descriptor terminates this resource template */
if (acpi_ut_get_resource_type(aml) ==
ACPI_RESOURCE_NAME_END_TAG) {
/*
* There must be at least one more byte in the buffer for
* the 2nd byte of the end_tag
*/
if ((aml + 1) >= end_aml) {
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
/*
* Don't attempt to perform any validation on the 2nd byte.
* Although all known ASL compilers insert a zero for the 2nd
* byte, it can also be a checksum (as per the ACPI spec),
* and this is occasionally seen in the field. July 2017.
*/
/* Return the pointer to the end_tag if requested */
if (!user_function) {
*context = aml;
}
/* Normal exit */
return_ACPI_STATUS(AE_OK);
}
aml += length;
offset += length;
}
/* Did not find an end_tag descriptor */
if (user_function) {
/* Insert an end_tag anyway. acpi_rs_get_list_length always leaves room */
(void)acpi_ut_validate_resource(walk_state, end_tag,
&resource_index);
status =
user_function(end_tag, 2, offset, resource_index, context);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_validate_resource
*
* PARAMETERS: walk_state - Current walk info
* aml - Pointer to the raw AML resource descriptor
* return_index - Where the resource index is returned. NULL
* if the index is not required.
*
* RETURN: Status, and optionally the Index into the global resource tables
*
* DESCRIPTION: Validate an AML resource descriptor by checking the Resource
* Type and Resource Length. Returns an index into the global
* resource information/dispatch tables for later use.
*
******************************************************************************/
acpi_status
acpi_ut_validate_resource(struct acpi_walk_state *walk_state,
void *aml, u8 *return_index)
{
union aml_resource *aml_resource;
u8 resource_type;
u8 resource_index;
acpi_rs_length resource_length;
acpi_rs_length minimum_resource_length;
ACPI_FUNCTION_ENTRY();
/*
* 1) Validate the resource_type field (Byte 0)
*/
resource_type = ACPI_GET8(aml);
/*
* Byte 0 contains the descriptor name (Resource Type)
* Examine the large/small bit in the resource header
*/
if (resource_type & ACPI_RESOURCE_NAME_LARGE) {
/* Verify the large resource type (name) against the max */
if (resource_type > ACPI_RESOURCE_NAME_LARGE_MAX) {
goto invalid_resource;
}
/*
* Large Resource Type -- bits 6:0 contain the name
* Translate range 0x80-0x8B to index range 0x10-0x1B
*/
resource_index = (u8) (resource_type - 0x70);
} else {
/*
* Small Resource Type -- bits 6:3 contain the name
* Shift range to index range 0x00-0x0F
*/
resource_index = (u8)
((resource_type & ACPI_RESOURCE_NAME_SMALL_MASK) >> 3);
}
/*
* Check validity of the resource type, via acpi_gbl_resource_types.
* Zero indicates an invalid resource.
*/
if (!acpi_gbl_resource_types[resource_index]) {
goto invalid_resource;
}
/*
* Validate the resource_length field. This ensures that the length
* is at least reasonable, and guarantees that it is non-zero.
*/
resource_length = acpi_ut_get_resource_length(aml);
minimum_resource_length = acpi_gbl_resource_aml_sizes[resource_index];
/* Validate based upon the type of resource - fixed length or variable */
switch (acpi_gbl_resource_types[resource_index]) {
case ACPI_FIXED_LENGTH:
/* Fixed length resource, length must match exactly */
if (resource_length != minimum_resource_length) {
goto bad_resource_length;
}
break;
case ACPI_VARIABLE_LENGTH:
/* Variable length resource, length must be at least the minimum */
if (resource_length < minimum_resource_length) {
goto bad_resource_length;
}
break;
case ACPI_SMALL_VARIABLE_LENGTH:
/* Small variable length resource, length can be (Min) or (Min-1) */
if ((resource_length > minimum_resource_length) ||
(resource_length < (minimum_resource_length - 1))) {
goto bad_resource_length;
}
break;
default:
/* Shouldn't happen (because of validation earlier), but be sure */
goto invalid_resource;
}
aml_resource = ACPI_CAST_PTR(union aml_resource, aml);
if (resource_type == ACPI_RESOURCE_NAME_SERIAL_BUS) {
/* Avoid undefined behavior: member access within misaligned address */
struct aml_resource_common_serialbus common_serial_bus;
memcpy(&common_serial_bus, aml_resource,
sizeof(common_serial_bus));
/* Validate the bus_type field */
if ((common_serial_bus.type == 0) ||
(common_serial_bus.type > AML_RESOURCE_MAX_SERIALBUSTYPE)) {
if (walk_state) {
ACPI_ERROR((AE_INFO,
"Invalid/unsupported SerialBus resource descriptor: BusType 0x%2.2X",
common_serial_bus.type));
}
return (AE_AML_INVALID_RESOURCE_TYPE);
}
}
/* Optionally return the resource table index */
if (return_index) {
*return_index = resource_index;
}
return (AE_OK);
invalid_resource:
if (walk_state) {
ACPI_ERROR((AE_INFO,
"Invalid/unsupported resource descriptor: Type 0x%2.2X",
resource_type));
}
return (AE_AML_INVALID_RESOURCE_TYPE);
bad_resource_length:
if (walk_state) {
ACPI_ERROR((AE_INFO,
"Invalid resource descriptor length: Type "
"0x%2.2X, Length 0x%4.4X, MinLength 0x%4.4X",
resource_type, resource_length,
minimum_resource_length));
}
return (AE_AML_BAD_RESOURCE_LENGTH);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_resource_type
*
* PARAMETERS: aml - Pointer to the raw AML resource descriptor
*
* RETURN: The Resource Type with no extraneous bits (except the
* Large/Small descriptor bit -- this is left alone)
*
* DESCRIPTION: Extract the Resource Type/Name from the first byte of
* a resource descriptor.
*
******************************************************************************/
u8 acpi_ut_get_resource_type(void *aml)
{
ACPI_FUNCTION_ENTRY();
/*
* Byte 0 contains the descriptor name (Resource Type)
* Examine the large/small bit in the resource header
*/
if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
/* Large Resource Type -- bits 6:0 contain the name */
return (ACPI_GET8(aml));
} else {
/* Small Resource Type -- bits 6:3 contain the name */
return ((u8) (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_SMALL_MASK));
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_resource_length
*
* PARAMETERS: aml - Pointer to the raw AML resource descriptor
*
* RETURN: Byte Length
*
* DESCRIPTION: Get the "Resource Length" of a raw AML descriptor. By
* definition, this does not include the size of the descriptor
* header or the length field itself.
*
******************************************************************************/
u16 acpi_ut_get_resource_length(void *aml)
{
acpi_rs_length resource_length;
ACPI_FUNCTION_ENTRY();
/*
* Byte 0 contains the descriptor name (Resource Type)
* Examine the large/small bit in the resource header
*/
if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
/* Large Resource type -- bytes 1-2 contain the 16-bit length */
ACPI_MOVE_16_TO_16(&resource_length, ACPI_ADD_PTR(u8, aml, 1));
} else {
/* Small Resource type -- bits 2:0 of byte 0 contain the length */
resource_length = (u16) (ACPI_GET8(aml) &
ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK);
}
return (resource_length);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_resource_header_length
*
* PARAMETERS: aml - Pointer to the raw AML resource descriptor
*
* RETURN: Length of the AML header (depends on large/small descriptor)
*
* DESCRIPTION: Get the length of the header for this resource.
*
******************************************************************************/
u8 acpi_ut_get_resource_header_length(void *aml)
{
ACPI_FUNCTION_ENTRY();
/* Examine the large/small bit in the resource header */
if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
return (sizeof(struct aml_resource_large_header));
} else {
return (sizeof(struct aml_resource_small_header));
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_descriptor_length
*
* PARAMETERS: aml - Pointer to the raw AML resource descriptor
*
* RETURN: Byte length
*
* DESCRIPTION: Get the total byte length of a raw AML descriptor, including the
* length of the descriptor header and the length field itself.
* Used to walk descriptor lists.
*
******************************************************************************/
u32 acpi_ut_get_descriptor_length(void *aml)
{
ACPI_FUNCTION_ENTRY();
/*
* Get the Resource Length (does not include header length) and add
* the header length (depends on if this is a small or large resource)
*/
return (acpi_ut_get_resource_length(aml) +
acpi_ut_get_resource_header_length(aml));
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_resource_end_tag
*
* PARAMETERS: obj_desc - The resource template buffer object
* end_tag - Where the pointer to the end_tag is returned
*
* RETURN: Status, pointer to the end tag
*
* DESCRIPTION: Find the end_tag resource descriptor in an AML resource template
* Note: allows a buffer length of zero.
*
******************************************************************************/
acpi_status
acpi_ut_get_resource_end_tag(union acpi_operand_object *obj_desc, u8 **end_tag)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ut_get_resource_end_tag);
/* Allow a buffer length of zero */
if (!obj_desc->buffer.length) {
*end_tag = obj_desc->buffer.pointer;
return_ACPI_STATUS(AE_OK);
}
/* Validate the template and get a pointer to the end_tag */
status = acpi_ut_walk_aml_resources(NULL, obj_desc->buffer.pointer,
obj_desc->buffer.length, NULL,
(void **)end_tag);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/utresrc.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: rsinfo - Dispatch and Info tables
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acresrc.h"
#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME("rsinfo")
/*
* Resource dispatch and information tables. Any new resource types (either
* Large or Small) must be reflected in each of these tables, so they are here
* in one place.
*
* The tables for Large descriptors are indexed by bits 6:0 of the AML
* descriptor type byte. The tables for Small descriptors are indexed by
* bits 6:3 of the descriptor byte. The tables for internal resource
* descriptors are indexed by the acpi_resource_type field.
*/
/* Dispatch table for resource-to-AML (Set Resource) conversion functions */
struct acpi_rsconvert_info *acpi_gbl_set_resource_dispatch[] = {
acpi_rs_set_irq, /* 0x00, ACPI_RESOURCE_TYPE_IRQ */
acpi_rs_convert_dma, /* 0x01, ACPI_RESOURCE_TYPE_DMA */
acpi_rs_set_start_dpf, /* 0x02, ACPI_RESOURCE_TYPE_START_DEPENDENT */
acpi_rs_convert_end_dpf, /* 0x03, ACPI_RESOURCE_TYPE_END_DEPENDENT */
acpi_rs_convert_io, /* 0x04, ACPI_RESOURCE_TYPE_IO */
acpi_rs_convert_fixed_io, /* 0x05, ACPI_RESOURCE_TYPE_FIXED_IO */
acpi_rs_set_vendor, /* 0x06, ACPI_RESOURCE_TYPE_VENDOR */
acpi_rs_convert_end_tag, /* 0x07, ACPI_RESOURCE_TYPE_END_TAG */
acpi_rs_convert_memory24, /* 0x08, ACPI_RESOURCE_TYPE_MEMORY24 */
acpi_rs_convert_memory32, /* 0x09, ACPI_RESOURCE_TYPE_MEMORY32 */
acpi_rs_convert_fixed_memory32, /* 0x0A, ACPI_RESOURCE_TYPE_FIXED_MEMORY32 */
acpi_rs_convert_address16, /* 0x0B, ACPI_RESOURCE_TYPE_ADDRESS16 */
acpi_rs_convert_address32, /* 0x0C, ACPI_RESOURCE_TYPE_ADDRESS32 */
acpi_rs_convert_address64, /* 0x0D, ACPI_RESOURCE_TYPE_ADDRESS64 */
acpi_rs_convert_ext_address64, /* 0x0E, ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64 */
acpi_rs_convert_ext_irq, /* 0x0F, ACPI_RESOURCE_TYPE_EXTENDED_IRQ */
acpi_rs_convert_generic_reg, /* 0x10, ACPI_RESOURCE_TYPE_GENERIC_REGISTER */
acpi_rs_convert_gpio, /* 0x11, ACPI_RESOURCE_TYPE_GPIO */
acpi_rs_convert_fixed_dma, /* 0x12, ACPI_RESOURCE_TYPE_FIXED_DMA */
NULL, /* 0x13, ACPI_RESOURCE_TYPE_SERIAL_BUS - Use subtype table below */
acpi_rs_convert_pin_function, /* 0x14, ACPI_RESOURCE_TYPE_PIN_FUNCTION */
acpi_rs_convert_pin_config, /* 0x15, ACPI_RESOURCE_TYPE_PIN_CONFIG */
acpi_rs_convert_pin_group, /* 0x16, ACPI_RESOURCE_TYPE_PIN_GROUP */
acpi_rs_convert_pin_group_function, /* 0x17, ACPI_RESOURCE_TYPE_PIN_GROUP_FUNCTION */
acpi_rs_convert_pin_group_config, /* 0x18, ACPI_RESOURCE_TYPE_PIN_GROUP_CONFIG */
acpi_rs_convert_clock_input, /* 0x19, ACPI_RESOURCE_TYPE_CLOCK_INPUT */
};
/* Dispatch tables for AML-to-resource (Get Resource) conversion functions */
struct acpi_rsconvert_info *acpi_gbl_get_resource_dispatch[] = {
/* Small descriptors */
NULL, /* 0x00, Reserved */
NULL, /* 0x01, Reserved */
NULL, /* 0x02, Reserved */
NULL, /* 0x03, Reserved */
acpi_rs_get_irq, /* 0x04, ACPI_RESOURCE_NAME_IRQ */
acpi_rs_convert_dma, /* 0x05, ACPI_RESOURCE_NAME_DMA */
acpi_rs_get_start_dpf, /* 0x06, ACPI_RESOURCE_NAME_START_DEPENDENT */
acpi_rs_convert_end_dpf, /* 0x07, ACPI_RESOURCE_NAME_END_DEPENDENT */
acpi_rs_convert_io, /* 0x08, ACPI_RESOURCE_NAME_IO */
acpi_rs_convert_fixed_io, /* 0x09, ACPI_RESOURCE_NAME_FIXED_IO */
acpi_rs_convert_fixed_dma, /* 0x0A, ACPI_RESOURCE_NAME_FIXED_DMA */
NULL, /* 0x0B, Reserved */
NULL, /* 0x0C, Reserved */
NULL, /* 0x0D, Reserved */
acpi_rs_get_vendor_small, /* 0x0E, ACPI_RESOURCE_NAME_VENDOR_SMALL */
acpi_rs_convert_end_tag, /* 0x0F, ACPI_RESOURCE_NAME_END_TAG */
/* Large descriptors */
NULL, /* 0x00, Reserved */
acpi_rs_convert_memory24, /* 0x01, ACPI_RESOURCE_NAME_MEMORY24 */
acpi_rs_convert_generic_reg, /* 0x02, ACPI_RESOURCE_NAME_GENERIC_REGISTER */
NULL, /* 0x03, Reserved */
acpi_rs_get_vendor_large, /* 0x04, ACPI_RESOURCE_NAME_VENDOR_LARGE */
acpi_rs_convert_memory32, /* 0x05, ACPI_RESOURCE_NAME_MEMORY32 */
acpi_rs_convert_fixed_memory32, /* 0x06, ACPI_RESOURCE_NAME_FIXED_MEMORY32 */
acpi_rs_convert_address32, /* 0x07, ACPI_RESOURCE_NAME_ADDRESS32 */
acpi_rs_convert_address16, /* 0x08, ACPI_RESOURCE_NAME_ADDRESS16 */
acpi_rs_convert_ext_irq, /* 0x09, ACPI_RESOURCE_NAME_EXTENDED_IRQ */
acpi_rs_convert_address64, /* 0x0A, ACPI_RESOURCE_NAME_ADDRESS64 */
acpi_rs_convert_ext_address64, /* 0x0B, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64 */
acpi_rs_convert_gpio, /* 0x0C, ACPI_RESOURCE_NAME_GPIO */
acpi_rs_convert_pin_function, /* 0x0D, ACPI_RESOURCE_NAME_PIN_FUNCTION */
NULL, /* 0x0E, ACPI_RESOURCE_NAME_SERIAL_BUS - Use subtype table below */
acpi_rs_convert_pin_config, /* 0x0F, ACPI_RESOURCE_NAME_PIN_CONFIG */
acpi_rs_convert_pin_group, /* 0x10, ACPI_RESOURCE_NAME_PIN_GROUP */
acpi_rs_convert_pin_group_function, /* 0x11, ACPI_RESOURCE_NAME_PIN_GROUP_FUNCTION */
acpi_rs_convert_pin_group_config, /* 0x12, ACPI_RESOURCE_NAME_PIN_GROUP_CONFIG */
acpi_rs_convert_clock_input, /* 0x13, ACPI_RESOURCE_NAME_CLOCK_INPUT */
};
/* Subtype table for serial_bus -- I2C, SPI, UART, and CSI2 */
struct acpi_rsconvert_info *acpi_gbl_convert_resource_serial_bus_dispatch[] = {
NULL,
acpi_rs_convert_i2c_serial_bus,
acpi_rs_convert_spi_serial_bus,
acpi_rs_convert_uart_serial_bus,
acpi_rs_convert_csi2_serial_bus
};
#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DISASSEMBLER) || defined(ACPI_DEBUGGER)
/* Dispatch table for resource dump functions */
struct acpi_rsdump_info *acpi_gbl_dump_resource_dispatch[] = {
acpi_rs_dump_irq, /* ACPI_RESOURCE_TYPE_IRQ */
acpi_rs_dump_dma, /* ACPI_RESOURCE_TYPE_DMA */
acpi_rs_dump_start_dpf, /* ACPI_RESOURCE_TYPE_START_DEPENDENT */
acpi_rs_dump_end_dpf, /* ACPI_RESOURCE_TYPE_END_DEPENDENT */
acpi_rs_dump_io, /* ACPI_RESOURCE_TYPE_IO */
acpi_rs_dump_fixed_io, /* ACPI_RESOURCE_TYPE_FIXED_IO */
acpi_rs_dump_vendor, /* ACPI_RESOURCE_TYPE_VENDOR */
acpi_rs_dump_end_tag, /* ACPI_RESOURCE_TYPE_END_TAG */
acpi_rs_dump_memory24, /* ACPI_RESOURCE_TYPE_MEMORY24 */
acpi_rs_dump_memory32, /* ACPI_RESOURCE_TYPE_MEMORY32 */
acpi_rs_dump_fixed_memory32, /* ACPI_RESOURCE_TYPE_FIXED_MEMORY32 */
acpi_rs_dump_address16, /* ACPI_RESOURCE_TYPE_ADDRESS16 */
acpi_rs_dump_address32, /* ACPI_RESOURCE_TYPE_ADDRESS32 */
acpi_rs_dump_address64, /* ACPI_RESOURCE_TYPE_ADDRESS64 */
acpi_rs_dump_ext_address64, /* ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64 */
acpi_rs_dump_ext_irq, /* ACPI_RESOURCE_TYPE_EXTENDED_IRQ */
acpi_rs_dump_generic_reg, /* ACPI_RESOURCE_TYPE_GENERIC_REGISTER */
acpi_rs_dump_gpio, /* ACPI_RESOURCE_TYPE_GPIO */
acpi_rs_dump_fixed_dma, /* ACPI_RESOURCE_TYPE_FIXED_DMA */
NULL, /* ACPI_RESOURCE_TYPE_SERIAL_BUS */
acpi_rs_dump_pin_function, /* ACPI_RESOURCE_TYPE_PIN_FUNCTION */
acpi_rs_dump_pin_config, /* ACPI_RESOURCE_TYPE_PIN_CONFIG */
acpi_rs_dump_pin_group, /* ACPI_RESOURCE_TYPE_PIN_GROUP */
acpi_rs_dump_pin_group_function, /* ACPI_RESOURCE_TYPE_PIN_GROUP_FUNCTION */
acpi_rs_dump_pin_group_config, /* ACPI_RESOURCE_TYPE_PIN_GROUP_CONFIG */
acpi_rs_dump_clock_input, /* ACPI_RESOURCE_TYPE_CLOCK_INPUT */
};
struct acpi_rsdump_info *acpi_gbl_dump_serial_bus_dispatch[] = {
NULL,
acpi_rs_dump_i2c_serial_bus, /* AML_RESOURCE_I2C_BUS_TYPE */
acpi_rs_dump_spi_serial_bus, /* AML_RESOURCE_SPI_BUS_TYPE */
acpi_rs_dump_uart_serial_bus, /* AML_RESOURCE_UART_BUS_TYPE */
acpi_rs_dump_csi2_serial_bus, /* AML_RESOURCE_CSI2_BUS_TYPE */
};
#endif
/*
* Base sizes for external AML resource descriptors, indexed by internal type.
* Includes size of the descriptor header (1 byte for small descriptors,
* 3 bytes for large descriptors)
*/
const u8 acpi_gbl_aml_resource_sizes[] = {
sizeof(struct aml_resource_irq), /* ACPI_RESOURCE_TYPE_IRQ (optional Byte 3 always created) */
sizeof(struct aml_resource_dma), /* ACPI_RESOURCE_TYPE_DMA */
sizeof(struct aml_resource_start_dependent), /* ACPI_RESOURCE_TYPE_START_DEPENDENT (optional Byte 1 always created) */
sizeof(struct aml_resource_end_dependent), /* ACPI_RESOURCE_TYPE_END_DEPENDENT */
sizeof(struct aml_resource_io), /* ACPI_RESOURCE_TYPE_IO */
sizeof(struct aml_resource_fixed_io), /* ACPI_RESOURCE_TYPE_FIXED_IO */
sizeof(struct aml_resource_vendor_small), /* ACPI_RESOURCE_TYPE_VENDOR */
sizeof(struct aml_resource_end_tag), /* ACPI_RESOURCE_TYPE_END_TAG */
sizeof(struct aml_resource_memory24), /* ACPI_RESOURCE_TYPE_MEMORY24 */
sizeof(struct aml_resource_memory32), /* ACPI_RESOURCE_TYPE_MEMORY32 */
sizeof(struct aml_resource_fixed_memory32), /* ACPI_RESOURCE_TYPE_FIXED_MEMORY32 */
sizeof(struct aml_resource_address16), /* ACPI_RESOURCE_TYPE_ADDRESS16 */
sizeof(struct aml_resource_address32), /* ACPI_RESOURCE_TYPE_ADDRESS32 */
sizeof(struct aml_resource_address64), /* ACPI_RESOURCE_TYPE_ADDRESS64 */
sizeof(struct aml_resource_extended_address64), /*ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64 */
sizeof(struct aml_resource_extended_irq), /* ACPI_RESOURCE_TYPE_EXTENDED_IRQ */
sizeof(struct aml_resource_generic_register), /* ACPI_RESOURCE_TYPE_GENERIC_REGISTER */
sizeof(struct aml_resource_gpio), /* ACPI_RESOURCE_TYPE_GPIO */
sizeof(struct aml_resource_fixed_dma), /* ACPI_RESOURCE_TYPE_FIXED_DMA */
sizeof(struct aml_resource_common_serialbus), /* ACPI_RESOURCE_TYPE_SERIAL_BUS */
sizeof(struct aml_resource_pin_function), /* ACPI_RESOURCE_TYPE_PIN_FUNCTION */
sizeof(struct aml_resource_pin_config), /* ACPI_RESOURCE_TYPE_PIN_CONFIG */
sizeof(struct aml_resource_pin_group), /* ACPI_RESOURCE_TYPE_PIN_GROUP */
sizeof(struct aml_resource_pin_group_function), /* ACPI_RESOURCE_TYPE_PIN_GROUP_FUNCTION */
sizeof(struct aml_resource_pin_group_config), /* ACPI_RESOURCE_TYPE_PIN_GROUP_CONFIG */
sizeof(struct aml_resource_clock_input), /* ACPI_RESOURCE_TYPE_CLOCK_INPUT */
};
const u8 acpi_gbl_resource_struct_sizes[] = {
/* Small descriptors */
0,
0,
0,
0,
ACPI_RS_SIZE(struct acpi_resource_irq),
ACPI_RS_SIZE(struct acpi_resource_dma),
ACPI_RS_SIZE(struct acpi_resource_start_dependent),
ACPI_RS_SIZE_MIN,
ACPI_RS_SIZE(struct acpi_resource_io),
ACPI_RS_SIZE(struct acpi_resource_fixed_io),
ACPI_RS_SIZE(struct acpi_resource_fixed_dma),
0,
0,
0,
ACPI_RS_SIZE(struct acpi_resource_vendor),
ACPI_RS_SIZE_MIN,
/* Large descriptors */
0,
ACPI_RS_SIZE(struct acpi_resource_memory24),
ACPI_RS_SIZE(struct acpi_resource_generic_register),
0,
ACPI_RS_SIZE(struct acpi_resource_vendor),
ACPI_RS_SIZE(struct acpi_resource_memory32),
ACPI_RS_SIZE(struct acpi_resource_fixed_memory32),
ACPI_RS_SIZE(struct acpi_resource_address32),
ACPI_RS_SIZE(struct acpi_resource_address16),
ACPI_RS_SIZE(struct acpi_resource_extended_irq),
ACPI_RS_SIZE(struct acpi_resource_address64),
ACPI_RS_SIZE(struct acpi_resource_extended_address64),
ACPI_RS_SIZE(struct acpi_resource_gpio),
ACPI_RS_SIZE(struct acpi_resource_pin_function),
ACPI_RS_SIZE(struct acpi_resource_common_serialbus),
ACPI_RS_SIZE(struct acpi_resource_pin_config),
ACPI_RS_SIZE(struct acpi_resource_pin_group),
ACPI_RS_SIZE(struct acpi_resource_pin_group_function),
ACPI_RS_SIZE(struct acpi_resource_pin_group_config),
ACPI_RS_SIZE(struct acpi_resource_clock_input),
};
const u8 acpi_gbl_aml_resource_serial_bus_sizes[] = {
0,
sizeof(struct aml_resource_i2c_serialbus),
sizeof(struct aml_resource_spi_serialbus),
sizeof(struct aml_resource_uart_serialbus),
sizeof(struct aml_resource_csi2_serialbus),
};
const u8 acpi_gbl_resource_struct_serial_bus_sizes[] = {
0,
ACPI_RS_SIZE(struct acpi_resource_i2c_serialbus),
ACPI_RS_SIZE(struct acpi_resource_spi_serialbus),
ACPI_RS_SIZE(struct acpi_resource_uart_serialbus),
ACPI_RS_SIZE(struct acpi_resource_csi2_serialbus),
};
| linux-master | drivers/acpi/acpica/rsinfo.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: tbdata - Table manager data structure functions
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "actables.h"
#include "acevents.h"
#define _COMPONENT ACPI_TABLES
ACPI_MODULE_NAME("tbdata")
/* Local prototypes */
static acpi_status
acpi_tb_check_duplication(struct acpi_table_desc *table_desc, u32 *table_index);
static u8
acpi_tb_compare_tables(struct acpi_table_desc *table_desc, u32 table_index);
/*******************************************************************************
*
* FUNCTION: acpi_tb_compare_tables
*
* PARAMETERS: table_desc - Table 1 descriptor to be compared
* table_index - Index of table 2 to be compared
*
* RETURN: TRUE if both tables are identical.
*
* DESCRIPTION: This function compares a table with another table that has
* already been installed in the root table list.
*
******************************************************************************/
static u8
acpi_tb_compare_tables(struct acpi_table_desc *table_desc, u32 table_index)
{
acpi_status status = AE_OK;
u8 is_identical;
struct acpi_table_header *table;
u32 table_length;
u8 table_flags;
status =
acpi_tb_acquire_table(&acpi_gbl_root_table_list.tables[table_index],
&table, &table_length, &table_flags);
if (ACPI_FAILURE(status)) {
return (FALSE);
}
/*
* Check for a table match on the entire table length,
* not just the header.
*/
is_identical = (u8)((table_desc->length != table_length ||
memcmp(table_desc->pointer, table, table_length)) ?
FALSE : TRUE);
/* Release the acquired table */
acpi_tb_release_table(table, table_length, table_flags);
return (is_identical);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_init_table_descriptor
*
* PARAMETERS: table_desc - Table descriptor
* address - Physical address of the table
* flags - Allocation flags of the table
* table - Pointer to the table
*
* RETURN: None
*
* DESCRIPTION: Initialize a new table descriptor
*
******************************************************************************/
void
acpi_tb_init_table_descriptor(struct acpi_table_desc *table_desc,
acpi_physical_address address,
u8 flags, struct acpi_table_header *table)
{
/*
* Initialize the table descriptor. Set the pointer to NULL for external
* tables, since the table is not fully mapped at this time.
*/
memset(table_desc, 0, sizeof(struct acpi_table_desc));
table_desc->address = address;
table_desc->length = table->length;
table_desc->flags = flags;
ACPI_MOVE_32_TO_32(table_desc->signature.ascii, table->signature);
switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
table_desc->pointer = table;
break;
case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
default:
break;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_acquire_table
*
* PARAMETERS: table_desc - Table descriptor
* table_ptr - Where table is returned
* table_length - Where table length is returned
* table_flags - Where table allocation flags are returned
*
* RETURN: Status
*
* DESCRIPTION: Acquire an ACPI table. It can be used for tables not
* maintained in the acpi_gbl_root_table_list.
*
******************************************************************************/
acpi_status
acpi_tb_acquire_table(struct acpi_table_desc *table_desc,
struct acpi_table_header **table_ptr,
u32 *table_length, u8 *table_flags)
{
struct acpi_table_header *table = NULL;
switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
table =
acpi_os_map_memory(table_desc->address, table_desc->length);
break;
case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
table = table_desc->pointer;
break;
default:
break;
}
/* Table is not valid yet */
if (!table) {
return (AE_NO_MEMORY);
}
/* Fill the return values */
*table_ptr = table;
*table_length = table_desc->length;
*table_flags = table_desc->flags;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_release_table
*
* PARAMETERS: table - Pointer for the table
* table_length - Length for the table
* table_flags - Allocation flags for the table
*
* RETURN: None
*
* DESCRIPTION: Release a table. The inverse of acpi_tb_acquire_table().
*
******************************************************************************/
void
acpi_tb_release_table(struct acpi_table_header *table,
u32 table_length, u8 table_flags)
{
switch (table_flags & ACPI_TABLE_ORIGIN_MASK) {
case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
acpi_os_unmap_memory(table, table_length);
break;
case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
default:
break;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_acquire_temp_table
*
* PARAMETERS: table_desc - Table descriptor to be acquired
* address - Address of the table
* flags - Allocation flags of the table
* table - Pointer to the table (required for virtual
* origins, optional for physical)
*
* RETURN: Status
*
* DESCRIPTION: This function validates the table header to obtain the length
* of a table and fills the table descriptor to make its state as
* "INSTALLED". Such a table descriptor is only used for verified
* installation.
*
******************************************************************************/
acpi_status
acpi_tb_acquire_temp_table(struct acpi_table_desc *table_desc,
acpi_physical_address address,
u8 flags, struct acpi_table_header *table)
{
u8 mapped_table = FALSE;
switch (flags & ACPI_TABLE_ORIGIN_MASK) {
case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
/* Get the length of the full table from the header */
if (!table) {
table =
acpi_os_map_memory(address,
sizeof(struct
acpi_table_header));
if (!table) {
return (AE_NO_MEMORY);
}
mapped_table = TRUE;
}
break;
case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
if (!table) {
return (AE_BAD_PARAMETER);
}
break;
default:
/* Table is not valid yet */
return (AE_NO_MEMORY);
}
acpi_tb_init_table_descriptor(table_desc, address, flags, table);
if (mapped_table) {
acpi_os_unmap_memory(table, sizeof(struct acpi_table_header));
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_release_temp_table
*
* PARAMETERS: table_desc - Table descriptor to be released
*
* RETURN: Status
*
* DESCRIPTION: The inverse of acpi_tb_acquire_temp_table().
*
*****************************************************************************/
void acpi_tb_release_temp_table(struct acpi_table_desc *table_desc)
{
/*
* Note that the .Address is maintained by the callers of
* acpi_tb_acquire_temp_table(), thus do not invoke acpi_tb_uninstall_table()
* where .Address will be freed.
*/
acpi_tb_invalidate_table(table_desc);
}
/******************************************************************************
*
* FUNCTION: acpi_tb_validate_table
*
* PARAMETERS: table_desc - Table descriptor
*
* RETURN: Status
*
* DESCRIPTION: This function is called to validate the table, the returned
* table descriptor is in "VALIDATED" state.
*
*****************************************************************************/
acpi_status acpi_tb_validate_table(struct acpi_table_desc *table_desc)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(tb_validate_table);
/* Validate the table if necessary */
if (!table_desc->pointer) {
status = acpi_tb_acquire_table(table_desc, &table_desc->pointer,
&table_desc->length,
&table_desc->flags);
if (!table_desc->pointer) {
status = AE_NO_MEMORY;
}
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_invalidate_table
*
* PARAMETERS: table_desc - Table descriptor
*
* RETURN: None
*
* DESCRIPTION: Invalidate one internal ACPI table, this is the inverse of
* acpi_tb_validate_table().
*
******************************************************************************/
void acpi_tb_invalidate_table(struct acpi_table_desc *table_desc)
{
ACPI_FUNCTION_TRACE(tb_invalidate_table);
/* Table must be validated */
if (!table_desc->pointer) {
return_VOID;
}
acpi_tb_release_table(table_desc->pointer, table_desc->length,
table_desc->flags);
switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
table_desc->pointer = NULL;
break;
case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
default:
break;
}
return_VOID;
}
/******************************************************************************
*
* FUNCTION: acpi_tb_validate_temp_table
*
* PARAMETERS: table_desc - Table descriptor
*
* RETURN: Status
*
* DESCRIPTION: This function is called to validate the table, the returned
* table descriptor is in "VALIDATED" state.
*
*****************************************************************************/
acpi_status acpi_tb_validate_temp_table(struct acpi_table_desc *table_desc)
{
if (!table_desc->pointer && !acpi_gbl_enable_table_validation) {
/*
* Only validates the header of the table.
* Note that Length contains the size of the mapping after invoking
* this work around, this value is required by
* acpi_tb_release_temp_table().
* We can do this because in acpi_init_table_descriptor(), the Length
* field of the installed descriptor is filled with the actual
* table length obtaining from the table header.
*/
table_desc->length = sizeof(struct acpi_table_header);
}
return (acpi_tb_validate_table(table_desc));
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_check_duplication
*
* PARAMETERS: table_desc - Table descriptor
* table_index - Where the table index is returned
*
* RETURN: Status
*
* DESCRIPTION: Avoid installing duplicated tables. However table override and
* user aided dynamic table load is allowed, thus comparing the
* address of the table is not sufficient, and checking the entire
* table content is required.
*
******************************************************************************/
static acpi_status
acpi_tb_check_duplication(struct acpi_table_desc *table_desc, u32 *table_index)
{
u32 i;
ACPI_FUNCTION_TRACE(tb_check_duplication);
/* Check if table is already registered */
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
/* Do not compare with unverified tables */
if (!
(acpi_gbl_root_table_list.tables[i].
flags & ACPI_TABLE_IS_VERIFIED)) {
continue;
}
/*
* Check for a table match on the entire table length,
* not just the header.
*/
if (!acpi_tb_compare_tables(table_desc, i)) {
continue;
}
/*
* Note: the current mechanism does not unregister a table if it is
* dynamically unloaded. The related namespace entries are deleted,
* but the table remains in the root table list.
*
* The assumption here is that the number of different tables that
* will be loaded is actually small, and there is minimal overhead
* in just keeping the table in case it is needed again.
*
* If this assumption changes in the future (perhaps on large
* machines with many table load/unload operations), tables will
* need to be unregistered when they are unloaded, and slots in the
* root table list should be reused when empty.
*/
if (acpi_gbl_root_table_list.tables[i].flags &
ACPI_TABLE_IS_LOADED) {
/* Table is still loaded, this is an error */
return_ACPI_STATUS(AE_ALREADY_EXISTS);
} else {
*table_index = i;
return_ACPI_STATUS(AE_CTRL_TERMINATE);
}
}
/* Indicate no duplication to the caller */
return_ACPI_STATUS(AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_tb_verify_temp_table
*
* PARAMETERS: table_desc - Table descriptor
* signature - Table signature to verify
* table_index - Where the table index is returned
*
* RETURN: Status
*
* DESCRIPTION: This function is called to validate and verify the table, the
* returned table descriptor is in "VALIDATED" state.
* Note that 'TableIndex' is required to be set to !NULL to
* enable duplication check.
*
*****************************************************************************/
acpi_status
acpi_tb_verify_temp_table(struct acpi_table_desc *table_desc,
char *signature, u32 *table_index)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(tb_verify_temp_table);
/* Validate the table */
status = acpi_tb_validate_temp_table(table_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* If a particular signature is expected (DSDT/FACS), it must match */
if (signature &&
!ACPI_COMPARE_NAMESEG(&table_desc->signature, signature)) {
ACPI_BIOS_ERROR((AE_INFO,
"Invalid signature 0x%X for ACPI table, expected [%s]",
table_desc->signature.integer, signature));
status = AE_BAD_SIGNATURE;
goto invalidate_and_exit;
}
if (acpi_gbl_enable_table_validation) {
/* Verify the checksum */
status =
acpi_ut_verify_checksum(table_desc->pointer,
table_desc->length);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
"%4.4s 0x%8.8X%8.8X"
" Attempted table install failed",
acpi_ut_valid_nameseg(table_desc->
signature.
ascii) ?
table_desc->signature.ascii : "????",
ACPI_FORMAT_UINT64(table_desc->
address)));
goto invalidate_and_exit;
}
/* Avoid duplications */
if (table_index) {
status =
acpi_tb_check_duplication(table_desc, table_index);
if (ACPI_FAILURE(status)) {
if (status != AE_CTRL_TERMINATE) {
ACPI_EXCEPTION((AE_INFO, status,
"%4.4s 0x%8.8X%8.8X"
" Table is already loaded",
acpi_ut_valid_nameseg
(table_desc->signature.
ascii) ? table_desc->
signature.
ascii : "????",
ACPI_FORMAT_UINT64
(table_desc->address)));
}
goto invalidate_and_exit;
}
}
table_desc->flags |= ACPI_TABLE_IS_VERIFIED;
}
return_ACPI_STATUS(status);
invalidate_and_exit:
acpi_tb_invalidate_table(table_desc);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_resize_root_table_list
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Expand the size of global table array
*
******************************************************************************/
acpi_status acpi_tb_resize_root_table_list(void)
{
struct acpi_table_desc *tables;
u32 table_count;
u32 current_table_count, max_table_count;
u32 i;
ACPI_FUNCTION_TRACE(tb_resize_root_table_list);
/* allow_resize flag is a parameter to acpi_initialize_tables */
if (!(acpi_gbl_root_table_list.flags & ACPI_ROOT_ALLOW_RESIZE)) {
ACPI_ERROR((AE_INFO,
"Resize of Root Table Array is not allowed"));
return_ACPI_STATUS(AE_SUPPORT);
}
/* Increase the Table Array size */
if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
table_count = acpi_gbl_root_table_list.max_table_count;
} else {
table_count = acpi_gbl_root_table_list.current_table_count;
}
max_table_count = table_count + ACPI_ROOT_TABLE_SIZE_INCREMENT;
tables = ACPI_ALLOCATE_ZEROED(((acpi_size)max_table_count) *
sizeof(struct acpi_table_desc));
if (!tables) {
ACPI_ERROR((AE_INFO,
"Could not allocate new root table array"));
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Copy and free the previous table array */
current_table_count = 0;
if (acpi_gbl_root_table_list.tables) {
for (i = 0; i < table_count; i++) {
if (acpi_gbl_root_table_list.tables[i].address) {
memcpy(tables + current_table_count,
acpi_gbl_root_table_list.tables + i,
sizeof(struct acpi_table_desc));
current_table_count++;
}
}
if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
ACPI_FREE(acpi_gbl_root_table_list.tables);
}
}
acpi_gbl_root_table_list.tables = tables;
acpi_gbl_root_table_list.max_table_count = max_table_count;
acpi_gbl_root_table_list.current_table_count = current_table_count;
acpi_gbl_root_table_list.flags |= ACPI_ROOT_ORIGIN_ALLOCATED;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_get_next_table_descriptor
*
* PARAMETERS: table_index - Where table index is returned
* table_desc - Where table descriptor is returned
*
* RETURN: Status and table index/descriptor.
*
* DESCRIPTION: Allocate a new ACPI table entry to the global table list
*
******************************************************************************/
acpi_status
acpi_tb_get_next_table_descriptor(u32 *table_index,
struct acpi_table_desc **table_desc)
{
acpi_status status;
u32 i;
/* Ensure that there is room for the table in the Root Table List */
if (acpi_gbl_root_table_list.current_table_count >=
acpi_gbl_root_table_list.max_table_count) {
status = acpi_tb_resize_root_table_list();
if (ACPI_FAILURE(status)) {
return (status);
}
}
i = acpi_gbl_root_table_list.current_table_count;
acpi_gbl_root_table_list.current_table_count++;
if (table_index) {
*table_index = i;
}
if (table_desc) {
*table_desc = &acpi_gbl_root_table_list.tables[i];
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_terminate
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Delete all internal ACPI tables
*
******************************************************************************/
void acpi_tb_terminate(void)
{
u32 i;
ACPI_FUNCTION_TRACE(tb_terminate);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/* Delete the individual tables */
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) {
acpi_tb_uninstall_table(&acpi_gbl_root_table_list.tables[i]);
}
/*
* Delete the root table array if allocated locally. Array cannot be
* mapped, so we don't need to check for that flag.
*/
if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
ACPI_FREE(acpi_gbl_root_table_list.tables);
}
acpi_gbl_root_table_list.tables = NULL;
acpi_gbl_root_table_list.flags = 0;
acpi_gbl_root_table_list.current_table_count = 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n"));
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_delete_namespace_by_owner
*
* PARAMETERS: table_index - Table index
*
* RETURN: Status
*
* DESCRIPTION: Delete all namespace objects created when this table was loaded.
*
******************************************************************************/
acpi_status acpi_tb_delete_namespace_by_owner(u32 table_index)
{
acpi_owner_id owner_id;
acpi_status status;
ACPI_FUNCTION_TRACE(tb_delete_namespace_by_owner);
status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (table_index >= acpi_gbl_root_table_list.current_table_count) {
/* The table index does not exist */
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(AE_NOT_EXIST);
}
/* Get the owner ID for this table, used to delete namespace nodes */
owner_id = acpi_gbl_root_table_list.tables[table_index].owner_id;
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
/*
* Need to acquire the namespace writer lock to prevent interference
* with any concurrent namespace walks. The interpreter must be
* released during the deletion since the acquisition of the deletion
* lock may block, and also since the execution of a namespace walk
* must be allowed to use the interpreter.
*/
status = acpi_ut_acquire_write_lock(&acpi_gbl_namespace_rw_lock);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
acpi_ns_delete_namespace_by_owner(owner_id);
acpi_ut_release_write_lock(&acpi_gbl_namespace_rw_lock);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_allocate_owner_id
*
* PARAMETERS: table_index - Table index
*
* RETURN: Status
*
* DESCRIPTION: Allocates owner_id in table_desc
*
******************************************************************************/
acpi_status acpi_tb_allocate_owner_id(u32 table_index)
{
acpi_status status = AE_BAD_PARAMETER;
ACPI_FUNCTION_TRACE(tb_allocate_owner_id);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (table_index < acpi_gbl_root_table_list.current_table_count) {
status =
acpi_ut_allocate_owner_id(&
(acpi_gbl_root_table_list.
tables[table_index].owner_id));
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_release_owner_id
*
* PARAMETERS: table_index - Table index
*
* RETURN: Status
*
* DESCRIPTION: Releases owner_id in table_desc
*
******************************************************************************/
acpi_status acpi_tb_release_owner_id(u32 table_index)
{
acpi_status status = AE_BAD_PARAMETER;
ACPI_FUNCTION_TRACE(tb_release_owner_id);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (table_index < acpi_gbl_root_table_list.current_table_count) {
acpi_ut_release_owner_id(&
(acpi_gbl_root_table_list.
tables[table_index].owner_id));
status = AE_OK;
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_get_owner_id
*
* PARAMETERS: table_index - Table index
* owner_id - Where the table owner_id is returned
*
* RETURN: Status
*
* DESCRIPTION: returns owner_id for the ACPI table
*
******************************************************************************/
acpi_status acpi_tb_get_owner_id(u32 table_index, acpi_owner_id *owner_id)
{
acpi_status status = AE_BAD_PARAMETER;
ACPI_FUNCTION_TRACE(tb_get_owner_id);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (table_index < acpi_gbl_root_table_list.current_table_count) {
*owner_id =
acpi_gbl_root_table_list.tables[table_index].owner_id;
status = AE_OK;
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_is_table_loaded
*
* PARAMETERS: table_index - Index into the root table
*
* RETURN: Table Loaded Flag
*
******************************************************************************/
u8 acpi_tb_is_table_loaded(u32 table_index)
{
u8 is_loaded = FALSE;
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (table_index < acpi_gbl_root_table_list.current_table_count) {
is_loaded = (u8)
(acpi_gbl_root_table_list.tables[table_index].flags &
ACPI_TABLE_IS_LOADED);
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return (is_loaded);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_set_table_loaded_flag
*
* PARAMETERS: table_index - Table index
* is_loaded - TRUE if table is loaded, FALSE otherwise
*
* RETURN: None
*
* DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE.
*
******************************************************************************/
void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded)
{
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
if (table_index < acpi_gbl_root_table_list.current_table_count) {
if (is_loaded) {
acpi_gbl_root_table_list.tables[table_index].flags |=
ACPI_TABLE_IS_LOADED;
} else {
acpi_gbl_root_table_list.tables[table_index].flags &=
~ACPI_TABLE_IS_LOADED;
}
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_load_table
*
* PARAMETERS: table_index - Table index
* parent_node - Where table index is returned
*
* RETURN: Status
*
* DESCRIPTION: Load an ACPI table
*
******************************************************************************/
acpi_status
acpi_tb_load_table(u32 table_index, struct acpi_namespace_node *parent_node)
{
struct acpi_table_header *table;
acpi_status status;
acpi_owner_id owner_id;
ACPI_FUNCTION_TRACE(tb_load_table);
/*
* Note: Now table is "INSTALLED", it must be validated before
* using.
*/
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_ns_load_table(table_index, parent_node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Update GPEs for any new _Lxx/_Exx methods. Ignore errors. The host is
* responsible for discovering any new wake GPEs by running _PRW methods
* that may have been loaded by this table.
*/
status = acpi_tb_get_owner_id(table_index, &owner_id);
if (ACPI_SUCCESS(status)) {
acpi_ev_update_gpes(owner_id);
}
/* Invoke table handler */
acpi_tb_notify_table(ACPI_TABLE_EVENT_LOAD, table);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_install_and_load_table
*
* PARAMETERS: address - Physical address of the table
* flags - Allocation flags of the table
* table - Pointer to the table (required for
* virtual origins, optional for
* physical)
* override - Whether override should be performed
* table_index - Where table index is returned
*
* RETURN: Status
*
* DESCRIPTION: Install and load an ACPI table
*
******************************************************************************/
acpi_status
acpi_tb_install_and_load_table(acpi_physical_address address,
u8 flags,
struct acpi_table_header *table,
u8 override, u32 *table_index)
{
acpi_status status;
u32 i;
ACPI_FUNCTION_TRACE(tb_install_and_load_table);
/* Install the table and load it into the namespace */
status = acpi_tb_install_standard_table(address, flags, table, TRUE,
override, &i);
if (ACPI_FAILURE(status)) {
goto exit;
}
status = acpi_tb_load_table(i, acpi_gbl_root_node);
exit:
*table_index = i;
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_tb_install_and_load_table)
/*******************************************************************************
*
* FUNCTION: acpi_tb_unload_table
*
* PARAMETERS: table_index - Table index
*
* RETURN: Status
*
* DESCRIPTION: Unload an ACPI table
*
******************************************************************************/
acpi_status acpi_tb_unload_table(u32 table_index)
{
acpi_status status = AE_OK;
struct acpi_table_header *table;
ACPI_FUNCTION_TRACE(tb_unload_table);
/* Ensure the table is still loaded */
if (!acpi_tb_is_table_loaded(table_index)) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
/* Invoke table handler */
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_SUCCESS(status)) {
acpi_tb_notify_table(ACPI_TABLE_EVENT_UNLOAD, table);
}
/* Delete the portion of the namespace owned by this table */
status = acpi_tb_delete_namespace_by_owner(table_index);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
(void)acpi_tb_release_owner_id(table_index);
acpi_tb_set_table_loaded_flag(table_index, FALSE);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_tb_unload_table)
/*******************************************************************************
*
* FUNCTION: acpi_tb_notify_table
*
* PARAMETERS: event - Table event
* table - Validated table pointer
*
* RETURN: None
*
* DESCRIPTION: Notify a table event to the users.
*
******************************************************************************/
void acpi_tb_notify_table(u32 event, void *table)
{
/* Invoke table handler if present */
if (acpi_gbl_table_handler) {
(void)acpi_gbl_table_handler(event, table,
acpi_gbl_table_handler_context);
}
}
| linux-master | drivers/acpi/acpica/tbdata.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: tbfind - find table
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "actables.h"
#define _COMPONENT ACPI_TABLES
ACPI_MODULE_NAME("tbfind")
/*******************************************************************************
*
* FUNCTION: acpi_tb_find_table
*
* PARAMETERS: signature - String with ACPI table signature
* oem_id - String with the table OEM ID
* oem_table_id - String with the OEM Table ID
* table_index - Where the table index is returned
*
* RETURN: Status and table index
*
* DESCRIPTION: Find an ACPI table (in the RSDT/XSDT) that matches the
* Signature, OEM ID and OEM Table ID. Returns an index that can
* be used to get the table header or entire table.
*
******************************************************************************/
acpi_status
acpi_tb_find_table(char *signature,
char *oem_id, char *oem_table_id, u32 *table_index)
{
acpi_status status = AE_OK;
struct acpi_table_header header;
u32 i;
ACPI_FUNCTION_TRACE(tb_find_table);
/* Validate the input table signature */
if (!acpi_ut_valid_nameseg(signature)) {
return_ACPI_STATUS(AE_BAD_SIGNATURE);
}
/* Don't allow the OEM strings to be too long */
if ((strlen(oem_id) > ACPI_OEM_ID_SIZE) ||
(strlen(oem_table_id) > ACPI_OEM_TABLE_ID_SIZE)) {
return_ACPI_STATUS(AE_AML_STRING_LIMIT);
}
/* Normalize the input strings */
memset(&header, 0, sizeof(struct acpi_table_header));
ACPI_COPY_NAMESEG(header.signature, signature);
strncpy(header.oem_id, oem_id, ACPI_OEM_ID_SIZE);
strncpy(header.oem_table_id, oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
/* Search for the table */
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
if (memcmp(&(acpi_gbl_root_table_list.tables[i].signature),
header.signature, ACPI_NAMESEG_SIZE)) {
/* Not the requested table */
continue;
}
/* Table with matching signature has been found */
if (!acpi_gbl_root_table_list.tables[i].pointer) {
/* Table is not currently mapped, map it */
status =
acpi_tb_validate_table(&acpi_gbl_root_table_list.
tables[i]);
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
if (!acpi_gbl_root_table_list.tables[i].pointer) {
continue;
}
}
/* Check for table match on all IDs */
if (!memcmp
(acpi_gbl_root_table_list.tables[i].pointer->signature,
header.signature, ACPI_NAMESEG_SIZE) && (!oem_id[0]
||
!memcmp
(acpi_gbl_root_table_list.
tables[i].
pointer->oem_id,
header.oem_id,
ACPI_OEM_ID_SIZE))
&& (!oem_table_id[0]
|| !memcmp(acpi_gbl_root_table_list.tables[i].pointer->
oem_table_id, header.oem_table_id,
ACPI_OEM_TABLE_ID_SIZE))) {
*table_index = i;
ACPI_DEBUG_PRINT((ACPI_DB_TABLES,
"Found table [%4.4s]\n",
header.signature));
goto unlock_and_exit;
}
}
status = AE_NOT_FOUND;
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/tbfind.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: psxface - Parser external interfaces
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "acdispat.h"
#include "acinterp.h"
#include "actables.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_PARSER
ACPI_MODULE_NAME("psxface")
/* Local Prototypes */
static void
acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action);
/*******************************************************************************
*
* FUNCTION: acpi_debug_trace
*
* PARAMETERS: method_name - Valid ACPI name string
* debug_level - Optional level mask. 0 to use default
* debug_layer - Optional layer mask. 0 to use default
* flags - bit 1: one shot(1) or persistent(0)
*
* RETURN: Status
*
* DESCRIPTION: External interface to enable debug tracing during control
* method execution
*
******************************************************************************/
acpi_status
acpi_debug_trace(const char *name, u32 debug_level, u32 debug_layer, u32 flags)
{
acpi_status status;
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return (status);
}
acpi_gbl_trace_method_name = name;
acpi_gbl_trace_flags = flags;
acpi_gbl_trace_dbg_level = debug_level;
acpi_gbl_trace_dbg_layer = debug_layer;
status = AE_OK;
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_execute_method
*
* PARAMETERS: info - Method info block, contains:
* node - Method Node to execute
* obj_desc - Method object
* parameters - List of parameters to pass to the method,
* terminated by NULL. Params itself may be
* NULL if no parameters are being passed.
* return_object - Where to put method's return value (if
* any). If NULL, no value is returned.
* parameter_type - Type of Parameter list
* return_object - Where to put method's return value (if
* any). If NULL, no value is returned.
* pass_number - Parse or execute pass
*
* RETURN: Status
*
* DESCRIPTION: Execute a control method
*
******************************************************************************/
acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
{
acpi_status status;
union acpi_parse_object *op;
struct acpi_walk_state *walk_state;
ACPI_FUNCTION_TRACE(ps_execute_method);
/* Quick validation of DSDT header */
acpi_tb_check_dsdt_header();
/* Validate the Info and method Node */
if (!info || !info->node) {
return_ACPI_STATUS(AE_NULL_ENTRY);
}
/* Init for new method, wait on concurrency semaphore */
status =
acpi_ds_begin_method_execution(info->node, info->obj_desc, NULL);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* The caller "owns" the parameters, so give each one an extra reference
*/
acpi_ps_update_parameter_list(info, REF_INCREMENT);
/*
* Execute the method. Performs parse simultaneously
*/
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n",
info->node->name.ascii, info->node, info->obj_desc));
/* Create and init a Root Node */
op = acpi_ps_create_scope_op(info->obj_desc->method.aml_start);
if (!op) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Create and initialize a new walk state */
info->pass_number = ACPI_IMODE_EXECUTE;
walk_state =
acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL,
NULL, NULL);
if (!walk_state) {
status = AE_NO_MEMORY;
goto cleanup;
}
status = acpi_ds_init_aml_walk(walk_state, op, info->node,
info->obj_desc->method.aml_start,
info->obj_desc->method.aml_length, info,
info->pass_number);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
goto cleanup;
}
walk_state->method_pathname = info->full_pathname;
walk_state->method_is_nested = FALSE;
if (info->obj_desc->method.info_flags & ACPI_METHOD_MODULE_LEVEL) {
walk_state->parse_flags |= ACPI_PARSE_MODULE_LEVEL;
}
/* Invoke an internal method if necessary */
if (info->obj_desc->method.info_flags & ACPI_METHOD_INTERNAL_ONLY) {
status =
info->obj_desc->method.dispatch.implementation(walk_state);
info->return_object = walk_state->return_desc;
/* Cleanup states */
acpi_ds_scope_stack_clear(walk_state);
acpi_ps_cleanup_scope(&walk_state->parser_state);
acpi_ds_terminate_control_method(walk_state->method_desc,
walk_state);
acpi_ds_delete_walk_state(walk_state);
goto cleanup;
}
/*
* Start method evaluation with an implicit return of zero.
* This is done for Windows compatibility.
*/
if (acpi_gbl_enable_interpreter_slack) {
walk_state->implicit_return_obj =
acpi_ut_create_integer_object((u64) 0);
if (!walk_state->implicit_return_obj) {
status = AE_NO_MEMORY;
acpi_ds_delete_walk_state(walk_state);
goto cleanup;
}
}
/* Parse the AML */
status = acpi_ps_parse_aml(walk_state);
/* walk_state was deleted by parse_aml */
cleanup:
acpi_ps_delete_parse_tree(op);
/* Take away the extra reference that we gave the parameters above */
acpi_ps_update_parameter_list(info, REF_DECREMENT);
/* Exit now if error above */
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* If the method has returned an object, signal this to the caller with
* a control exception code
*/
if (info->return_object) {
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n",
info->return_object));
ACPI_DUMP_STACK_ENTRY(info->return_object);
status = AE_CTRL_RETURN_VALUE;
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_execute_table
*
* PARAMETERS: info - Method info block, contains:
* node - Node to where the is entered into the
* namespace
* obj_desc - Pseudo method object describing the AML
* code of the entire table
* pass_number - Parse or execute pass
*
* RETURN: Status
*
* DESCRIPTION: Execute a table
*
******************************************************************************/
acpi_status acpi_ps_execute_table(struct acpi_evaluate_info *info)
{
acpi_status status;
union acpi_parse_object *op = NULL;
struct acpi_walk_state *walk_state = NULL;
ACPI_FUNCTION_TRACE(ps_execute_table);
/* Create and init a Root Node */
op = acpi_ps_create_scope_op(info->obj_desc->method.aml_start);
if (!op) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Create and initialize a new walk state */
walk_state =
acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL,
NULL, NULL);
if (!walk_state) {
status = AE_NO_MEMORY;
goto cleanup;
}
status = acpi_ds_init_aml_walk(walk_state, op, info->node,
info->obj_desc->method.aml_start,
info->obj_desc->method.aml_length, info,
info->pass_number);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
walk_state->method_pathname = info->full_pathname;
walk_state->method_is_nested = FALSE;
if (info->obj_desc->method.info_flags & ACPI_METHOD_MODULE_LEVEL) {
walk_state->parse_flags |= ACPI_PARSE_MODULE_LEVEL;
}
/* Info->Node is the default location to load the table */
if (info->node && info->node != acpi_gbl_root_node) {
status =
acpi_ds_scope_stack_push(info->node, ACPI_TYPE_METHOD,
walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
}
/*
* Parse the AML, walk_state will be deleted by parse_aml
*/
acpi_ex_enter_interpreter();
status = acpi_ps_parse_aml(walk_state);
acpi_ex_exit_interpreter();
walk_state = NULL;
cleanup:
if (walk_state) {
acpi_ds_delete_walk_state(walk_state);
}
if (op) {
acpi_ps_delete_parse_tree(op);
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_update_parameter_list
*
* PARAMETERS: info - See struct acpi_evaluate_info
* (Used: parameter_type and Parameters)
* action - Add or Remove reference
*
* RETURN: Status
*
* DESCRIPTION: Update reference count on all method parameter objects
*
******************************************************************************/
static void
acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action)
{
u32 i;
if (info->parameters) {
/* Update reference count for each parameter */
for (i = 0; info->parameters[i]; i++) {
/* Ignore errors, just do them all */
(void)acpi_ut_update_object_reference(info->
parameters[i],
action);
}
}
}
| linux-master | drivers/acpi/acpica/psxface.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: exnames - interpreter/scanner name load/execute
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"
#include "amlcode.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("exnames")
/* Local prototypes */
static char *acpi_ex_allocate_name_string(u32 prefix_count, u32 num_name_segs);
static acpi_status acpi_ex_name_segment(u8 **in_aml_address, char *name_string);
/*******************************************************************************
*
* FUNCTION: acpi_ex_allocate_name_string
*
* PARAMETERS: prefix_count - Count of parent levels. Special cases:
* (-1)==root, 0==none
* num_name_segs - count of 4-character name segments
*
* RETURN: A pointer to the allocated string segment. This segment must
* be deleted by the caller.
*
* DESCRIPTION: Allocate a buffer for a name string. Ensure allocated name
* string is long enough, and set up prefix if any.
*
******************************************************************************/
static char *acpi_ex_allocate_name_string(u32 prefix_count, u32 num_name_segs)
{
char *temp_ptr;
char *name_string;
u32 size_needed;
ACPI_FUNCTION_TRACE(ex_allocate_name_string);
/*
* Allow room for all \ and ^ prefixes, all segments and a multi_name_prefix.
* Also, one byte for the null terminator.
* This may actually be somewhat longer than needed.
*/
if (prefix_count == ACPI_UINT32_MAX) {
/* Special case for root */
size_needed = 1 + (ACPI_NAMESEG_SIZE * num_name_segs) + 2 + 1;
} else {
size_needed =
prefix_count + (ACPI_NAMESEG_SIZE * num_name_segs) + 2 + 1;
}
/*
* Allocate a buffer for the name.
* This buffer must be deleted by the caller!
*/
name_string = ACPI_ALLOCATE(size_needed);
if (!name_string) {
ACPI_ERROR((AE_INFO,
"Could not allocate size %u", size_needed));
return_PTR(NULL);
}
temp_ptr = name_string;
/* Set up Root or Parent prefixes if needed */
if (prefix_count == ACPI_UINT32_MAX) {
*temp_ptr++ = AML_ROOT_PREFIX;
} else {
while (prefix_count--) {
*temp_ptr++ = AML_PARENT_PREFIX;
}
}
/* Set up Dual or Multi prefixes if needed */
if (num_name_segs > 2) {
/* Set up multi prefixes */
*temp_ptr++ = AML_MULTI_NAME_PREFIX;
*temp_ptr++ = (char)num_name_segs;
} else if (2 == num_name_segs) {
/* Set up dual prefixes */
*temp_ptr++ = AML_DUAL_NAME_PREFIX;
}
/*
* Terminate string following prefixes. acpi_ex_name_segment() will
* append the segment(s)
*/
*temp_ptr = 0;
return_PTR(name_string);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_name_segment
*
* PARAMETERS: in_aml_address - Pointer to the name in the AML code
* name_string - Where to return the name. The name is appended
* to any existing string to form a namepath
*
* RETURN: Status
*
* DESCRIPTION: Extract an ACPI name (4 bytes) from the AML byte stream
*
******************************************************************************/
static acpi_status acpi_ex_name_segment(u8 ** in_aml_address, char *name_string)
{
char *aml_address = (void *)*in_aml_address;
acpi_status status = AE_OK;
u32 index;
char char_buf[5];
ACPI_FUNCTION_TRACE(ex_name_segment);
/*
* If first character is a digit, then we know that we aren't looking
* at a valid name segment
*/
char_buf[0] = *aml_address;
if ('0' <= char_buf[0] && char_buf[0] <= '9') {
ACPI_ERROR((AE_INFO, "Invalid leading digit: %c", char_buf[0]));
return_ACPI_STATUS(AE_CTRL_PENDING);
}
for (index = 0;
(index < ACPI_NAMESEG_SIZE)
&& (acpi_ut_valid_name_char(*aml_address, 0)); index++) {
char_buf[index] = *aml_address++;
}
/* Valid name segment */
if (index == 4) {
/* Found 4 valid characters */
char_buf[4] = '\0';
if (name_string) {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"Appending NameSeg %s\n", char_buf));
strcat(name_string, char_buf);
} else {
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"No Name string - %s\n", char_buf));
}
} else if (index == 0) {
/*
* First character was not a valid name character,
* so we are looking at something other than a name.
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Leading character is not alpha: %02Xh (not a name)\n",
char_buf[0]));
status = AE_CTRL_PENDING;
} else {
/*
* Segment started with one or more valid characters, but fewer than
* the required 4
*/
status = AE_AML_BAD_NAME;
ACPI_ERROR((AE_INFO,
"Bad character 0x%02x in name, at %p",
*aml_address, aml_address));
}
*in_aml_address = ACPI_CAST_PTR(u8, aml_address);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_get_name_string
*
* PARAMETERS: data_type - Object type to be associated with this
* name
* in_aml_address - Pointer to the namestring in the AML code
* out_name_string - Where the namestring is returned
* out_name_length - Length of the returned string
*
* RETURN: Status, namestring and length
*
* DESCRIPTION: Extract a full namepath from the AML byte stream,
* including any prefixes.
*
******************************************************************************/
acpi_status
acpi_ex_get_name_string(acpi_object_type data_type,
u8 * in_aml_address,
char **out_name_string, u32 * out_name_length)
{
acpi_status status = AE_OK;
u8 *aml_address = in_aml_address;
char *name_string = NULL;
u32 num_segments;
u32 prefix_count = 0;
u8 has_prefix = FALSE;
ACPI_FUNCTION_TRACE_PTR(ex_get_name_string, aml_address);
if (ACPI_TYPE_LOCAL_REGION_FIELD == data_type ||
ACPI_TYPE_LOCAL_BANK_FIELD == data_type ||
ACPI_TYPE_LOCAL_INDEX_FIELD == data_type) {
/* Disallow prefixes for types associated with field_unit names */
name_string = acpi_ex_allocate_name_string(0, 1);
if (!name_string) {
status = AE_NO_MEMORY;
} else {
status =
acpi_ex_name_segment(&aml_address, name_string);
}
} else {
/*
* data_type is not a field name.
* Examine first character of name for root or parent prefix operators
*/
switch (*aml_address) {
case AML_ROOT_PREFIX:
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
"RootPrefix(\\) at %p\n",
aml_address));
/*
* Remember that we have a root_prefix --
* see comment in acpi_ex_allocate_name_string()
*/
aml_address++;
prefix_count = ACPI_UINT32_MAX;
has_prefix = TRUE;
break;
case AML_PARENT_PREFIX:
/* Increment past possibly multiple parent prefixes */
do {
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
"ParentPrefix (^) at %p\n",
aml_address));
aml_address++;
prefix_count++;
} while (*aml_address == AML_PARENT_PREFIX);
has_prefix = TRUE;
break;
default:
/* Not a prefix character */
break;
}
/* Examine first character of name for name segment prefix operator */
switch (*aml_address) {
case AML_DUAL_NAME_PREFIX:
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
"DualNamePrefix at %p\n",
aml_address));
aml_address++;
name_string =
acpi_ex_allocate_name_string(prefix_count, 2);
if (!name_string) {
status = AE_NO_MEMORY;
break;
}
/* Indicate that we processed a prefix */
has_prefix = TRUE;
status =
acpi_ex_name_segment(&aml_address, name_string);
if (ACPI_SUCCESS(status)) {
status =
acpi_ex_name_segment(&aml_address,
name_string);
}
break;
case AML_MULTI_NAME_PREFIX:
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
"MultiNamePrefix at %p\n",
aml_address));
/* Fetch count of segments remaining in name path */
aml_address++;
num_segments = *aml_address;
name_string =
acpi_ex_allocate_name_string(prefix_count,
num_segments);
if (!name_string) {
status = AE_NO_MEMORY;
break;
}
/* Indicate that we processed a prefix */
aml_address++;
has_prefix = TRUE;
while (num_segments &&
(status =
acpi_ex_name_segment(&aml_address,
name_string)) == AE_OK) {
num_segments--;
}
break;
case 0:
/* null_name valid as of 8-12-98 ASL/AML Grammar Update */
if (prefix_count == ACPI_UINT32_MAX) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"NameSeg is \"\\\" followed by NULL\n"));
}
/* Consume the NULL byte */
aml_address++;
name_string =
acpi_ex_allocate_name_string(prefix_count, 0);
if (!name_string) {
status = AE_NO_MEMORY;
break;
}
break;
default:
/* Name segment string */
name_string =
acpi_ex_allocate_name_string(prefix_count, 1);
if (!name_string) {
status = AE_NO_MEMORY;
break;
}
status =
acpi_ex_name_segment(&aml_address, name_string);
break;
}
}
if (AE_CTRL_PENDING == status && has_prefix) {
/* Ran out of segments after processing a prefix */
ACPI_ERROR((AE_INFO, "Malformed Name at %p", name_string));
status = AE_AML_BAD_NAME;
}
if (ACPI_FAILURE(status)) {
if (name_string) {
ACPI_FREE(name_string);
}
return_ACPI_STATUS(status);
}
*out_name_string = name_string;
*out_name_length = (u32) (aml_address - in_aml_address);
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/exnames.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: exstoren - AML Interpreter object store support,
* Store to Node (namespace object)
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"
#include "amlcode.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("exstoren")
/*******************************************************************************
*
* FUNCTION: acpi_ex_resolve_object
*
* PARAMETERS: source_desc_ptr - Pointer to the source object
* target_type - Current type of the target
* walk_state - Current walk state
*
* RETURN: Status, resolved object in source_desc_ptr.
*
* DESCRIPTION: Resolve an object. If the object is a reference, dereference
* it and return the actual object in the source_desc_ptr.
*
******************************************************************************/
acpi_status
acpi_ex_resolve_object(union acpi_operand_object **source_desc_ptr,
acpi_object_type target_type,
struct acpi_walk_state *walk_state)
{
union acpi_operand_object *source_desc = *source_desc_ptr;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(ex_resolve_object);
/* Ensure we have a Target that can be stored to */
switch (target_type) {
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
case ACPI_TYPE_LOCAL_INDEX_FIELD:
/*
* These cases all require only Integers or values that
* can be converted to Integers (Strings or Buffers)
*/
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/*
* Stores into a Field/Region or into a Integer/Buffer/String
* are all essentially the same. This case handles the
* "interchangeable" types Integer, String, and Buffer.
*/
if (source_desc->common.type == ACPI_TYPE_LOCAL_REFERENCE) {
/* Resolve a reference object first */
status =
acpi_ex_resolve_to_value(source_desc_ptr,
walk_state);
if (ACPI_FAILURE(status)) {
break;
}
}
/* For copy_object, no further validation necessary */
if (walk_state->opcode == AML_COPY_OBJECT_OP) {
break;
}
/* Must have a Integer, Buffer, or String */
if ((source_desc->common.type != ACPI_TYPE_INTEGER) &&
(source_desc->common.type != ACPI_TYPE_BUFFER) &&
(source_desc->common.type != ACPI_TYPE_STRING) &&
!((source_desc->common.type == ACPI_TYPE_LOCAL_REFERENCE) &&
(source_desc->reference.class == ACPI_REFCLASS_TABLE))) {
/* Conversion successful but still not a valid type */
ACPI_ERROR((AE_INFO,
"Cannot assign type [%s] to [%s] (must be type Int/Str/Buf)",
acpi_ut_get_object_type_name(source_desc),
acpi_ut_get_type_name(target_type)));
status = AE_AML_OPERAND_TYPE;
}
break;
case ACPI_TYPE_LOCAL_ALIAS:
case ACPI_TYPE_LOCAL_METHOD_ALIAS:
/*
* All aliases should have been resolved earlier, during the
* operand resolution phase.
*/
ACPI_ERROR((AE_INFO, "Store into an unresolved Alias object"));
status = AE_AML_INTERNAL;
break;
case ACPI_TYPE_PACKAGE:
default:
/*
* All other types than Alias and the various Fields come here,
* including the untyped case - ACPI_TYPE_ANY.
*/
break;
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_store_object_to_object
*
* PARAMETERS: source_desc - Object to store
* dest_desc - Object to receive a copy of the source
* new_desc - New object if dest_desc is obsoleted
* walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: "Store" an object to another object. This may include
* converting the source type to the target type (implicit
* conversion), and a copy of the value of the source to
* the target.
*
* The Assignment of an object to another (not named) object
* is handled here.
* The Source passed in will replace the current value (if any)
* with the input value.
*
* When storing into an object the data is converted to the
* target object type then stored in the object. This means
* that the target object type (for an initialized target) will
* not be changed by a store operation.
*
* This module allows destination types of Number, String,
* Buffer, and Package.
*
* Assumes parameters are already validated. NOTE: source_desc
* resolution (from a reference object) must be performed by
* the caller if necessary.
*
******************************************************************************/
acpi_status
acpi_ex_store_object_to_object(union acpi_operand_object *source_desc,
union acpi_operand_object *dest_desc,
union acpi_operand_object **new_desc,
struct acpi_walk_state *walk_state)
{
union acpi_operand_object *actual_src_desc;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE_PTR(ex_store_object_to_object, source_desc);
actual_src_desc = source_desc;
if (!dest_desc) {
/*
* There is no destination object (An uninitialized node or
* package element), so we can simply copy the source object
* creating a new destination object
*/
status =
acpi_ut_copy_iobject_to_iobject(actual_src_desc, new_desc,
walk_state);
return_ACPI_STATUS(status);
}
if (source_desc->common.type != dest_desc->common.type) {
/*
* The source type does not match the type of the destination.
* Perform the "implicit conversion" of the source to the current type
* of the target as per the ACPI specification.
*
* If no conversion performed, actual_src_desc = source_desc.
* Otherwise, actual_src_desc is a temporary object to hold the
* converted object.
*/
status = acpi_ex_convert_to_target_type(dest_desc->common.type,
source_desc,
&actual_src_desc,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (source_desc == actual_src_desc) {
/*
* No conversion was performed. Return the source_desc as the
* new object.
*/
*new_desc = source_desc;
return_ACPI_STATUS(AE_OK);
}
}
/*
* We now have two objects of identical types, and we can perform a
* copy of the *value* of the source object.
*/
switch (dest_desc->common.type) {
case ACPI_TYPE_INTEGER:
dest_desc->integer.value = actual_src_desc->integer.value;
/* Truncate value if we are executing from a 32-bit ACPI table */
(void)acpi_ex_truncate_for32bit_table(dest_desc);
break;
case ACPI_TYPE_STRING:
status =
acpi_ex_store_string_to_string(actual_src_desc, dest_desc);
break;
case ACPI_TYPE_BUFFER:
status =
acpi_ex_store_buffer_to_buffer(actual_src_desc, dest_desc);
break;
case ACPI_TYPE_PACKAGE:
status =
acpi_ut_copy_iobject_to_iobject(actual_src_desc, &dest_desc,
walk_state);
break;
default:
/*
* All other types come here.
*/
ACPI_WARNING((AE_INFO, "Store into type [%s] not implemented",
acpi_ut_get_object_type_name(dest_desc)));
status = AE_NOT_IMPLEMENTED;
break;
}
if (actual_src_desc != source_desc) {
/* Delete the intermediate (temporary) source object */
acpi_ut_remove_reference(actual_src_desc);
}
*new_desc = dest_desc;
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/exstoren.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: extrace - Support for interpreter execution tracing
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acinterp.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("extrace")
static union acpi_operand_object *acpi_gbl_trace_method_object = NULL;
/* Local prototypes */
#ifdef ACPI_DEBUG_OUTPUT
static const char *acpi_ex_get_trace_event_name(acpi_trace_event_type type);
#endif
/*******************************************************************************
*
* FUNCTION: acpi_ex_interpreter_trace_enabled
*
* PARAMETERS: name - Whether method name should be matched,
* this should be checked before starting
* the tracer
*
* RETURN: TRUE if interpreter trace is enabled.
*
* DESCRIPTION: Check whether interpreter trace is enabled
*
******************************************************************************/
static u8 acpi_ex_interpreter_trace_enabled(char *name)
{
/* Check if tracing is enabled */
if (!(acpi_gbl_trace_flags & ACPI_TRACE_ENABLED)) {
return (FALSE);
}
/*
* Check if tracing is filtered:
*
* 1. If the tracer is started, acpi_gbl_trace_method_object should have
* been filled by the trace starter
* 2. If the tracer is not started, acpi_gbl_trace_method_name should be
* matched if it is specified
* 3. If the tracer is oneshot style, acpi_gbl_trace_method_name should
* not be cleared by the trace stopper during the first match
*/
if (acpi_gbl_trace_method_object) {
return (TRUE);
}
if (name &&
(acpi_gbl_trace_method_name &&
strcmp(acpi_gbl_trace_method_name, name))) {
return (FALSE);
}
if ((acpi_gbl_trace_flags & ACPI_TRACE_ONESHOT) &&
!acpi_gbl_trace_method_name) {
return (FALSE);
}
return (TRUE);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_get_trace_event_name
*
* PARAMETERS: type - Trace event type
*
* RETURN: Trace event name.
*
* DESCRIPTION: Used to obtain the full trace event name.
*
******************************************************************************/
#ifdef ACPI_DEBUG_OUTPUT
static const char *acpi_ex_get_trace_event_name(acpi_trace_event_type type)
{
switch (type) {
case ACPI_TRACE_AML_METHOD:
return "Method";
case ACPI_TRACE_AML_OPCODE:
return "Opcode";
case ACPI_TRACE_AML_REGION:
return "Region";
default:
return "";
}
}
#endif
/*******************************************************************************
*
* FUNCTION: acpi_ex_trace_point
*
* PARAMETERS: type - Trace event type
* begin - TRUE if before execution
* aml - Executed AML address
* pathname - Object path
*
* RETURN: None
*
* DESCRIPTION: Internal interpreter execution trace.
*
******************************************************************************/
void
acpi_ex_trace_point(acpi_trace_event_type type,
u8 begin, u8 *aml, char *pathname)
{
ACPI_FUNCTION_NAME(ex_trace_point);
if (pathname) {
ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
"%s %s [0x%p:%s] execution.\n",
acpi_ex_get_trace_event_name(type),
begin ? "Begin" : "End", aml, pathname));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
"%s %s [0x%p] execution.\n",
acpi_ex_get_trace_event_name(type),
begin ? "Begin" : "End", aml));
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_start_trace_method
*
* PARAMETERS: method_node - Node of the method
* obj_desc - The method object
* walk_state - current state, NULL if not yet executing
* a method.
*
* RETURN: None
*
* DESCRIPTION: Start control method execution trace
*
******************************************************************************/
void
acpi_ex_start_trace_method(struct acpi_namespace_node *method_node,
union acpi_operand_object *obj_desc,
struct acpi_walk_state *walk_state)
{
char *pathname = NULL;
u8 enabled = FALSE;
ACPI_FUNCTION_NAME(ex_start_trace_method);
if (method_node) {
pathname = acpi_ns_get_normalized_pathname(method_node, TRUE);
}
enabled = acpi_ex_interpreter_trace_enabled(pathname);
if (enabled && !acpi_gbl_trace_method_object) {
acpi_gbl_trace_method_object = obj_desc;
acpi_gbl_original_dbg_level = acpi_dbg_level;
acpi_gbl_original_dbg_layer = acpi_dbg_layer;
acpi_dbg_level = ACPI_TRACE_LEVEL_ALL;
acpi_dbg_layer = ACPI_TRACE_LAYER_ALL;
if (acpi_gbl_trace_dbg_level) {
acpi_dbg_level = acpi_gbl_trace_dbg_level;
}
if (acpi_gbl_trace_dbg_layer) {
acpi_dbg_layer = acpi_gbl_trace_dbg_layer;
}
}
if (enabled) {
ACPI_TRACE_POINT(ACPI_TRACE_AML_METHOD, TRUE,
obj_desc ? obj_desc->method.aml_start : NULL,
pathname);
}
if (pathname) {
ACPI_FREE(pathname);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_stop_trace_method
*
* PARAMETERS: method_node - Node of the method
* obj_desc - The method object
* walk_state - current state, NULL if not yet executing
* a method.
*
* RETURN: None
*
* DESCRIPTION: Stop control method execution trace
*
******************************************************************************/
void
acpi_ex_stop_trace_method(struct acpi_namespace_node *method_node,
union acpi_operand_object *obj_desc,
struct acpi_walk_state *walk_state)
{
char *pathname = NULL;
u8 enabled;
ACPI_FUNCTION_NAME(ex_stop_trace_method);
if (method_node) {
pathname = acpi_ns_get_normalized_pathname(method_node, TRUE);
}
enabled = acpi_ex_interpreter_trace_enabled(NULL);
if (enabled) {
ACPI_TRACE_POINT(ACPI_TRACE_AML_METHOD, FALSE,
obj_desc ? obj_desc->method.aml_start : NULL,
pathname);
}
/* Check whether the tracer should be stopped */
if (acpi_gbl_trace_method_object == obj_desc) {
/* Disable further tracing if type is one-shot */
if (acpi_gbl_trace_flags & ACPI_TRACE_ONESHOT) {
acpi_gbl_trace_method_name = NULL;
}
acpi_dbg_level = acpi_gbl_original_dbg_level;
acpi_dbg_layer = acpi_gbl_original_dbg_layer;
acpi_gbl_trace_method_object = NULL;
}
if (pathname) {
ACPI_FREE(pathname);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_start_trace_opcode
*
* PARAMETERS: op - The parser opcode object
* walk_state - current state, NULL if not yet executing
* a method.
*
* RETURN: None
*
* DESCRIPTION: Start opcode execution trace
*
******************************************************************************/
void
acpi_ex_start_trace_opcode(union acpi_parse_object *op,
struct acpi_walk_state *walk_state)
{
ACPI_FUNCTION_NAME(ex_start_trace_opcode);
if (acpi_ex_interpreter_trace_enabled(NULL) &&
(acpi_gbl_trace_flags & ACPI_TRACE_OPCODE)) {
ACPI_TRACE_POINT(ACPI_TRACE_AML_OPCODE, TRUE,
op->common.aml, op->common.aml_op_name);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_stop_trace_opcode
*
* PARAMETERS: op - The parser opcode object
* walk_state - current state, NULL if not yet executing
* a method.
*
* RETURN: None
*
* DESCRIPTION: Stop opcode execution trace
*
******************************************************************************/
void
acpi_ex_stop_trace_opcode(union acpi_parse_object *op,
struct acpi_walk_state *walk_state)
{
ACPI_FUNCTION_NAME(ex_stop_trace_opcode);
if (acpi_ex_interpreter_trace_enabled(NULL) &&
(acpi_gbl_trace_flags & ACPI_TRACE_OPCODE)) {
ACPI_TRACE_POINT(ACPI_TRACE_AML_OPCODE, FALSE,
op->common.aml, op->common.aml_op_name);
}
}
| linux-master | drivers/acpi/acpica/extrace.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: psparse - Parser top level AML parse routines
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
/*
* Parse the AML and build an operation tree as most interpreters,
* like Perl, do. Parsing is done by hand rather than with a YACC
* generated parser to tightly constrain stack and dynamic memory
* usage. At the same time, parsing is kept flexible and the code
* fairly compact by parsing based on a list of AML opcode
* templates in aml_op_info[]
*/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "acdispat.h"
#include "amlcode.h"
#include "acinterp.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_PARSER
ACPI_MODULE_NAME("psparse")
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_opcode_size
*
* PARAMETERS: opcode - An AML opcode
*
* RETURN: Size of the opcode, in bytes (1 or 2)
*
* DESCRIPTION: Get the size of the current opcode.
*
******************************************************************************/
u32 acpi_ps_get_opcode_size(u32 opcode)
{
/* Extended (2-byte) opcode if > 255 */
if (opcode > 0x00FF) {
return (2);
}
/* Otherwise, just a single byte opcode */
return (1);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_peek_opcode
*
* PARAMETERS: parser_state - A parser state object
*
* RETURN: Next AML opcode
*
* DESCRIPTION: Get next AML opcode (without incrementing AML pointer)
*
******************************************************************************/
u16 acpi_ps_peek_opcode(struct acpi_parse_state * parser_state)
{
u8 *aml;
u16 opcode;
aml = parser_state->aml;
opcode = (u16) ACPI_GET8(aml);
if (opcode == AML_EXTENDED_PREFIX) {
/* Extended opcode, get the second opcode byte */
aml++;
opcode = (u16) ((opcode << 8) | ACPI_GET8(aml));
}
return (opcode);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_complete_this_op
*
* PARAMETERS: walk_state - Current State
* op - Op to complete
*
* RETURN: Status
*
* DESCRIPTION: Perform any cleanup at the completion of an Op.
*
******************************************************************************/
acpi_status
acpi_ps_complete_this_op(struct acpi_walk_state *walk_state,
union acpi_parse_object *op)
{
union acpi_parse_object *prev;
union acpi_parse_object *next;
const struct acpi_opcode_info *parent_info;
union acpi_parse_object *replacement_op = NULL;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE_PTR(ps_complete_this_op, op);
/* Check for null Op, can happen if AML code is corrupt */
if (!op) {
return_ACPI_STATUS(AE_OK); /* OK for now */
}
acpi_ex_stop_trace_opcode(op, walk_state);
/* Delete this op and the subtree below it if asked to */
if (((walk_state->parse_flags & ACPI_PARSE_TREE_MASK) !=
ACPI_PARSE_DELETE_TREE)
|| (walk_state->op_info->class == AML_CLASS_ARGUMENT)) {
return_ACPI_STATUS(AE_OK);
}
/* Make sure that we only delete this subtree */
if (op->common.parent) {
prev = op->common.parent->common.value.arg;
if (!prev) {
/* Nothing more to do */
goto cleanup;
}
/*
* Check if we need to replace the operator and its subtree
* with a return value op (placeholder op)
*/
parent_info =
acpi_ps_get_opcode_info(op->common.parent->common.
aml_opcode);
switch (parent_info->class) {
case AML_CLASS_CONTROL:
break;
case AML_CLASS_CREATE:
/*
* These opcodes contain term_arg operands. The current
* op must be replaced by a placeholder return op
*/
replacement_op =
acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP,
op->common.aml);
if (!replacement_op) {
status = AE_NO_MEMORY;
}
break;
case AML_CLASS_NAMED_OBJECT:
/*
* These opcodes contain term_arg operands. The current
* op must be replaced by a placeholder return op
*/
if ((op->common.parent->common.aml_opcode ==
AML_REGION_OP)
|| (op->common.parent->common.aml_opcode ==
AML_DATA_REGION_OP)
|| (op->common.parent->common.aml_opcode ==
AML_BUFFER_OP)
|| (op->common.parent->common.aml_opcode ==
AML_PACKAGE_OP)
|| (op->common.parent->common.aml_opcode ==
AML_BANK_FIELD_OP)
|| (op->common.parent->common.aml_opcode ==
AML_VARIABLE_PACKAGE_OP)) {
replacement_op =
acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP,
op->common.aml);
if (!replacement_op) {
status = AE_NO_MEMORY;
}
} else
if ((op->common.parent->common.aml_opcode ==
AML_NAME_OP)
&& (walk_state->pass_number <=
ACPI_IMODE_LOAD_PASS2)) {
if ((op->common.aml_opcode == AML_BUFFER_OP)
|| (op->common.aml_opcode == AML_PACKAGE_OP)
|| (op->common.aml_opcode ==
AML_VARIABLE_PACKAGE_OP)) {
replacement_op =
acpi_ps_alloc_op(op->common.
aml_opcode,
op->common.aml);
if (!replacement_op) {
status = AE_NO_MEMORY;
} else {
replacement_op->named.data =
op->named.data;
replacement_op->named.length =
op->named.length;
}
}
}
break;
default:
replacement_op =
acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP,
op->common.aml);
if (!replacement_op) {
status = AE_NO_MEMORY;
}
}
/* We must unlink this op from the parent tree */
if (prev == op) {
/* This op is the first in the list */
if (replacement_op) {
replacement_op->common.parent =
op->common.parent;
replacement_op->common.value.arg = NULL;
replacement_op->common.node = op->common.node;
op->common.parent->common.value.arg =
replacement_op;
replacement_op->common.next = op->common.next;
} else {
op->common.parent->common.value.arg =
op->common.next;
}
}
/* Search the parent list */
else
while (prev) {
/* Traverse all siblings in the parent's argument list */
next = prev->common.next;
if (next == op) {
if (replacement_op) {
replacement_op->common.parent =
op->common.parent;
replacement_op->common.value.
arg = NULL;
replacement_op->common.node =
op->common.node;
prev->common.next =
replacement_op;
replacement_op->common.next =
op->common.next;
next = NULL;
} else {
prev->common.next =
op->common.next;
next = NULL;
}
}
prev = next;
}
}
cleanup:
/* Now we can actually delete the subtree rooted at Op */
acpi_ps_delete_parse_tree(op);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_next_parse_state
*
* PARAMETERS: walk_state - Current state
* op - Current parse op
* callback_status - Status from previous operation
*
* RETURN: Status
*
* DESCRIPTION: Update the parser state based upon the return exception from
* the parser callback.
*
******************************************************************************/
acpi_status
acpi_ps_next_parse_state(struct acpi_walk_state *walk_state,
union acpi_parse_object *op,
acpi_status callback_status)
{
struct acpi_parse_state *parser_state = &walk_state->parser_state;
acpi_status status = AE_CTRL_PENDING;
ACPI_FUNCTION_TRACE_PTR(ps_next_parse_state, op);
switch (callback_status) {
case AE_CTRL_TERMINATE:
/*
* A control method was terminated via a RETURN statement.
* The walk of this method is complete.
*/
parser_state->aml = parser_state->aml_end;
status = AE_CTRL_TERMINATE;
break;
case AE_CTRL_BREAK:
parser_state->aml = walk_state->aml_last_while;
walk_state->control_state->common.value = FALSE;
status = AE_CTRL_BREAK;
break;
case AE_CTRL_CONTINUE:
parser_state->aml = walk_state->aml_last_while;
status = AE_CTRL_CONTINUE;
break;
case AE_CTRL_PENDING:
parser_state->aml = walk_state->aml_last_while;
break;
#if 0
case AE_CTRL_SKIP:
parser_state->aml = parser_state->scope->parse_scope.pkg_end;
status = AE_OK;
break;
#endif
case AE_CTRL_TRUE:
/*
* Predicate of an IF was true, and we are at the matching ELSE.
* Just close out this package
*/
parser_state->aml = acpi_ps_get_next_package_end(parser_state);
status = AE_CTRL_PENDING;
break;
case AE_CTRL_FALSE:
/*
* Either an IF/WHILE Predicate was false or we encountered a BREAK
* opcode. In both cases, we do not execute the rest of the
* package; We simply close out the parent (finishing the walk of
* this branch of the tree) and continue execution at the parent
* level.
*/
parser_state->aml = parser_state->scope->parse_scope.pkg_end;
/* In the case of a BREAK, just force a predicate (if any) to FALSE */
walk_state->control_state->common.value = FALSE;
status = AE_CTRL_END;
break;
case AE_CTRL_TRANSFER:
/* A method call (invocation) -- transfer control */
status = AE_CTRL_TRANSFER;
walk_state->prev_op = op;
walk_state->method_call_op = op;
walk_state->method_call_node =
(op->common.value.arg)->common.node;
/* Will return value (if any) be used by the caller? */
walk_state->return_used =
acpi_ds_is_result_used(op, walk_state);
break;
default:
status = callback_status;
if (ACPI_CNTL_EXCEPTION(callback_status)) {
status = AE_OK;
}
break;
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_parse_aml
*
* PARAMETERS: walk_state - Current state
*
*
* RETURN: Status
*
* DESCRIPTION: Parse raw AML and return a tree of ops
*
******************************************************************************/
acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
{
acpi_status status;
struct acpi_thread_state *thread;
struct acpi_thread_state *prev_walk_list = acpi_gbl_current_walk_list;
struct acpi_walk_state *previous_walk_state;
ACPI_FUNCTION_TRACE(ps_parse_aml);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Entered with WalkState=%p Aml=%p size=%X\n",
walk_state, walk_state->parser_state.aml,
walk_state->parser_state.aml_size));
if (!walk_state->parser_state.aml) {
return_ACPI_STATUS(AE_BAD_ADDRESS);
}
/* Create and initialize a new thread state */
thread = acpi_ut_create_thread_state();
if (!thread) {
if (walk_state->method_desc) {
/* Executing a control method - additional cleanup */
acpi_ds_terminate_control_method(walk_state->
method_desc,
walk_state);
}
acpi_ds_delete_walk_state(walk_state);
return_ACPI_STATUS(AE_NO_MEMORY);
}
walk_state->thread = thread;
/*
* If executing a method, the starting sync_level is this method's
* sync_level
*/
if (walk_state->method_desc) {
walk_state->thread->current_sync_level =
walk_state->method_desc->method.sync_level;
}
acpi_ds_push_walk_state(walk_state, thread);
/*
* This global allows the AML debugger to get a handle to the currently
* executing control method.
*/
acpi_gbl_current_walk_list = thread;
/*
* Execute the walk loop as long as there is a valid Walk State. This
* handles nested control method invocations without recursion.
*/
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "State=%p\n", walk_state));
status = AE_OK;
while (walk_state) {
if (ACPI_SUCCESS(status)) {
/*
* The parse_loop executes AML until the method terminates
* or calls another method.
*/
status = acpi_ps_parse_loop(walk_state);
}
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Completed one call to walk loop, %s State=%p\n",
acpi_format_exception(status), walk_state));
if (walk_state->method_pathname && walk_state->method_is_nested) {
/* Optional object evaluation log */
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EVALUATION,
"%-26s: %*s%s\n",
" Exit nested method",
(walk_state->
method_nesting_depth + 1) * 3,
" ",
&walk_state->method_pathname[1]));
ACPI_FREE(walk_state->method_pathname);
walk_state->method_is_nested = FALSE;
}
if (status == AE_CTRL_TRANSFER) {
/*
* A method call was detected.
* Transfer control to the called control method
*/
status =
acpi_ds_call_control_method(thread, walk_state,
NULL);
if (ACPI_FAILURE(status)) {
status =
acpi_ds_method_error(status, walk_state);
}
/*
* If the transfer to the new method method call worked,
* a new walk state was created -- get it
*/
walk_state = acpi_ds_get_current_walk_state(thread);
continue;
} else if (status == AE_CTRL_TERMINATE) {
status = AE_OK;
} else if ((status != AE_OK) && (walk_state->method_desc)) {
/* Either the method parse or actual execution failed */
acpi_ex_exit_interpreter();
if (status == AE_ABORT_METHOD) {
acpi_ns_print_node_pathname(walk_state->
method_node,
"Aborting method");
acpi_os_printf("\n");
} else {
ACPI_ERROR_METHOD("Aborting method",
walk_state->method_node, NULL,
status);
}
acpi_ex_enter_interpreter();
/* Check for possible multi-thread reentrancy problem */
if ((status == AE_ALREADY_EXISTS) &&
(!(walk_state->method_desc->method.info_flags &
ACPI_METHOD_SERIALIZED))) {
/*
* Method is not serialized and tried to create an object
* twice. The probable cause is that the method cannot
* handle reentrancy. Mark as "pending serialized" now, and
* then mark "serialized" when the last thread exits.
*/
walk_state->method_desc->method.info_flags |=
ACPI_METHOD_SERIALIZED_PENDING;
}
}
/* We are done with this walk, move on to the parent if any */
walk_state = acpi_ds_pop_walk_state(thread);
/* Reset the current scope to the beginning of scope stack */
acpi_ds_scope_stack_clear(walk_state);
/*
* If we just returned from the execution of a control method or if we
* encountered an error during the method parse phase, there's lots of
* cleanup to do
*/
if (((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) ==
ACPI_PARSE_EXECUTE &&
!(walk_state->parse_flags & ACPI_PARSE_MODULE_LEVEL)) ||
(ACPI_FAILURE(status))) {
acpi_ds_terminate_control_method(walk_state->
method_desc,
walk_state);
}
/* Delete this walk state and all linked control states */
acpi_ps_cleanup_scope(&walk_state->parser_state);
previous_walk_state = walk_state;
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"ReturnValue=%p, ImplicitValue=%p State=%p\n",
walk_state->return_desc,
walk_state->implicit_return_obj, walk_state));
/* Check if we have restarted a preempted walk */
walk_state = acpi_ds_get_current_walk_state(thread);
if (walk_state) {
if (ACPI_SUCCESS(status)) {
/*
* There is another walk state, restart it.
* If the method return value is not used by the parent,
* The object is deleted
*/
if (!previous_walk_state->return_desc) {
/*
* In slack mode execution, if there is no return value
* we should implicitly return zero (0) as a default value.
*/
if (acpi_gbl_enable_interpreter_slack &&
!previous_walk_state->
implicit_return_obj) {
previous_walk_state->
implicit_return_obj =
acpi_ut_create_integer_object
((u64) 0);
if (!previous_walk_state->
implicit_return_obj) {
return_ACPI_STATUS
(AE_NO_MEMORY);
}
}
/* Restart the calling control method */
status =
acpi_ds_restart_control_method
(walk_state,
previous_walk_state->
implicit_return_obj);
} else {
/*
* We have a valid return value, delete any implicit
* return value.
*/
acpi_ds_clear_implicit_return
(previous_walk_state);
status =
acpi_ds_restart_control_method
(walk_state,
previous_walk_state->return_desc);
}
if (ACPI_SUCCESS(status)) {
walk_state->walk_type |=
ACPI_WALK_METHOD_RESTART;
}
} else {
/* On error, delete any return object or implicit return */
acpi_ut_remove_reference(previous_walk_state->
return_desc);
acpi_ds_clear_implicit_return
(previous_walk_state);
}
}
/*
* Just completed a 1st-level method, save the final internal return
* value (if any)
*/
else if (previous_walk_state->caller_return_desc) {
if (previous_walk_state->implicit_return_obj) {
*(previous_walk_state->caller_return_desc) =
previous_walk_state->implicit_return_obj;
} else {
/* NULL if no return value */
*(previous_walk_state->caller_return_desc) =
previous_walk_state->return_desc;
}
} else {
if (previous_walk_state->return_desc) {
/* Caller doesn't want it, must delete it */
acpi_ut_remove_reference(previous_walk_state->
return_desc);
}
if (previous_walk_state->implicit_return_obj) {
/* Caller doesn't want it, must delete it */
acpi_ut_remove_reference(previous_walk_state->
implicit_return_obj);
}
}
acpi_ds_delete_walk_state(previous_walk_state);
}
/* Normal exit */
acpi_ex_release_all_mutexes(thread);
acpi_ut_delete_generic_state(ACPI_CAST_PTR
(union acpi_generic_state, thread));
acpi_gbl_current_walk_list = prev_walk_list;
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/psparse.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: dbnames - Debugger commands for the acpi namespace
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acdebug.h"
#include "acpredef.h"
#include "acinterp.h"
#define _COMPONENT ACPI_CA_DEBUGGER
ACPI_MODULE_NAME("dbnames")
/* Local prototypes */
static acpi_status
acpi_db_walk_and_match_name(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value);
static acpi_status
acpi_db_walk_for_predefined_names(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value);
static acpi_status
acpi_db_walk_for_specific_objects(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value);
static acpi_status
acpi_db_walk_for_object_counts(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value);
static acpi_status
acpi_db_integrity_walk(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value);
static acpi_status
acpi_db_walk_for_references(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value);
static acpi_status
acpi_db_bus_walk(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value);
/*
* Arguments for the Objects command
* These object types map directly to the ACPI_TYPES
*/
static struct acpi_db_argument_info acpi_db_object_types[] = {
{"ANY"},
{"INTEGERS"},
{"STRINGS"},
{"BUFFERS"},
{"PACKAGES"},
{"FIELDS"},
{"DEVICES"},
{"EVENTS"},
{"METHODS"},
{"MUTEXES"},
{"REGIONS"},
{"POWERRESOURCES"},
{"PROCESSORS"},
{"THERMALZONES"},
{"BUFFERFIELDS"},
{"DDBHANDLES"},
{"DEBUG"},
{"REGIONFIELDS"},
{"BANKFIELDS"},
{"INDEXFIELDS"},
{"REFERENCES"},
{"ALIASES"},
{"METHODALIASES"},
{"NOTIFY"},
{"ADDRESSHANDLER"},
{"RESOURCE"},
{"RESOURCEFIELD"},
{"SCOPES"},
{NULL} /* Must be null terminated */
};
/*******************************************************************************
*
* FUNCTION: acpi_db_set_scope
*
* PARAMETERS: name - New scope path
*
* RETURN: Status
*
* DESCRIPTION: Set the "current scope" as maintained by this utility.
* The scope is used as a prefix to ACPI paths.
*
******************************************************************************/
void acpi_db_set_scope(char *name)
{
acpi_status status;
struct acpi_namespace_node *node;
if (!name || name[0] == 0) {
acpi_os_printf("Current scope: %s\n", acpi_gbl_db_scope_buf);
return;
}
acpi_db_prep_namestring(name);
if (ACPI_IS_ROOT_PREFIX(name[0])) {
/* Validate new scope from the root */
status = acpi_ns_get_node(acpi_gbl_root_node, name,
ACPI_NS_NO_UPSEARCH, &node);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
acpi_gbl_db_scope_buf[0] = 0;
} else {
/* Validate new scope relative to old scope */
status = acpi_ns_get_node(acpi_gbl_db_scope_node, name,
ACPI_NS_NO_UPSEARCH, &node);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
}
/* Build the final pathname */
if (acpi_ut_safe_strcat
(acpi_gbl_db_scope_buf, sizeof(acpi_gbl_db_scope_buf), name)) {
status = AE_BUFFER_OVERFLOW;
goto error_exit;
}
if (acpi_ut_safe_strcat
(acpi_gbl_db_scope_buf, sizeof(acpi_gbl_db_scope_buf), "\\")) {
status = AE_BUFFER_OVERFLOW;
goto error_exit;
}
acpi_gbl_db_scope_node = node;
acpi_os_printf("New scope: %s\n", acpi_gbl_db_scope_buf);
return;
error_exit:
acpi_os_printf("Could not attach scope: %s, %s\n",
name, acpi_format_exception(status));
}
/*******************************************************************************
*
* FUNCTION: acpi_db_dump_namespace
*
* PARAMETERS: start_arg - Node to begin namespace dump
* depth_arg - Maximum tree depth to be dumped
*
* RETURN: None
*
* DESCRIPTION: Dump entire namespace or a subtree. Each node is displayed
* with type and other information.
*
******************************************************************************/
void acpi_db_dump_namespace(char *start_arg, char *depth_arg)
{
acpi_handle subtree_entry = acpi_gbl_root_node;
u32 max_depth = ACPI_UINT32_MAX;
/* No argument given, just start at the root and dump entire namespace */
if (start_arg) {
subtree_entry = acpi_db_convert_to_node(start_arg);
if (!subtree_entry) {
return;
}
/* Now we can check for the depth argument */
if (depth_arg) {
max_depth = strtoul(depth_arg, NULL, 0);
}
}
acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
if (((struct acpi_namespace_node *)subtree_entry)->parent) {
acpi_os_printf("ACPI Namespace (from %4.4s (%p) subtree):\n",
((struct acpi_namespace_node *)subtree_entry)->
name.ascii, subtree_entry);
} else {
acpi_os_printf("ACPI Namespace (from %s):\n",
ACPI_NAMESPACE_ROOT);
}
/* Display the subtree */
acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
acpi_ns_dump_objects(ACPI_TYPE_ANY, ACPI_DISPLAY_SUMMARY, max_depth,
ACPI_OWNER_ID_MAX, subtree_entry);
acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_dump_namespace_paths
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Dump entire namespace with full object pathnames and object
* type information. Alternative to "namespace" command.
*
******************************************************************************/
void acpi_db_dump_namespace_paths(void)
{
acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
acpi_os_printf("ACPI Namespace (from root):\n");
/* Display the entire namespace */
acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
acpi_ns_dump_object_paths(ACPI_TYPE_ANY, ACPI_DISPLAY_SUMMARY,
ACPI_UINT32_MAX, ACPI_OWNER_ID_MAX,
acpi_gbl_root_node);
acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_dump_namespace_by_owner
*
* PARAMETERS: owner_arg - Owner ID whose nodes will be displayed
* depth_arg - Maximum tree depth to be dumped
*
* RETURN: None
*
* DESCRIPTION: Dump elements of the namespace that are owned by the owner_id.
*
******************************************************************************/
void acpi_db_dump_namespace_by_owner(char *owner_arg, char *depth_arg)
{
acpi_handle subtree_entry = acpi_gbl_root_node;
u32 max_depth = ACPI_UINT32_MAX;
acpi_owner_id owner_id;
owner_id = (acpi_owner_id)strtoul(owner_arg, NULL, 0);
/* Now we can check for the depth argument */
if (depth_arg) {
max_depth = strtoul(depth_arg, NULL, 0);
}
acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
acpi_os_printf("ACPI Namespace by owner %X:\n", owner_id);
/* Display the subtree */
acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
acpi_ns_dump_objects(ACPI_TYPE_ANY, ACPI_DISPLAY_SUMMARY, max_depth,
owner_id, subtree_entry);
acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_walk_and_match_name
*
* PARAMETERS: Callback from walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Find a particular name/names within the namespace. Wildcards
* are supported -- '?' matches any character.
*
******************************************************************************/
static acpi_status
acpi_db_walk_and_match_name(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value)
{
acpi_status status;
char *requested_name = (char *)context;
u32 i;
struct acpi_buffer buffer;
struct acpi_walk_info info;
/* Check for a name match */
for (i = 0; i < 4; i++) {
/* Wildcard support */
if ((requested_name[i] != '?') &&
(requested_name[i] != ((struct acpi_namespace_node *)
obj_handle)->name.ascii[i])) {
/* No match, just exit */
return (AE_OK);
}
}
/* Get the full pathname to this object */
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_ns_handle_to_pathname(obj_handle, &buffer, TRUE);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could Not get pathname for object %p\n",
obj_handle);
} else {
info.count = 0;
info.owner_id = ACPI_OWNER_ID_MAX;
info.debug_level = ACPI_UINT32_MAX;
info.display_type = ACPI_DISPLAY_SUMMARY | ACPI_DISPLAY_SHORT;
acpi_os_printf("%32s", (char *)buffer.pointer);
(void)acpi_ns_dump_one_object(obj_handle, nesting_level, &info,
NULL);
ACPI_FREE(buffer.pointer);
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_find_name_in_namespace
*
* PARAMETERS: name_arg - The 4-character ACPI name to find.
* wildcards are supported.
*
* RETURN: None
*
* DESCRIPTION: Search the namespace for a given name (with wildcards)
*
******************************************************************************/
acpi_status acpi_db_find_name_in_namespace(char *name_arg)
{
char acpi_name[5] = "____";
char *acpi_name_ptr = acpi_name;
if (strlen(name_arg) > ACPI_NAMESEG_SIZE) {
acpi_os_printf("Name must be no longer than 4 characters\n");
return (AE_OK);
}
/* Pad out name with underscores as necessary to create a 4-char name */
acpi_ut_strupr(name_arg);
while (*name_arg) {
*acpi_name_ptr = *name_arg;
acpi_name_ptr++;
name_arg++;
}
/* Walk the namespace from the root */
(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, acpi_db_walk_and_match_name,
NULL, acpi_name, NULL);
acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_walk_for_predefined_names
*
* PARAMETERS: Callback from walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Detect and display predefined ACPI names (names that start with
* an underscore)
*
******************************************************************************/
static acpi_status
acpi_db_walk_for_predefined_names(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value)
{
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
u32 *count = (u32 *)context;
const union acpi_predefined_info *predefined;
const union acpi_predefined_info *package = NULL;
char *pathname;
char string_buffer[48];
predefined = acpi_ut_match_predefined_method(node->name.ascii);
if (!predefined) {
return (AE_OK);
}
pathname = acpi_ns_get_normalized_pathname(node, TRUE);
if (!pathname) {
return (AE_OK);
}
/* If method returns a package, the info is in the next table entry */
if (predefined->info.expected_btypes & ACPI_RTYPE_PACKAGE) {
package = predefined + 1;
}
acpi_ut_get_expected_return_types(string_buffer,
predefined->info.expected_btypes);
acpi_os_printf("%-32s Arguments %X, Return Types: %s", pathname,
METHOD_GET_ARG_COUNT(predefined->info.argument_list),
string_buffer);
if (package) {
acpi_os_printf(" (PkgType %2.2X, ObjType %2.2X, Count %2.2X)",
package->ret_info.type,
package->ret_info.object_type1,
package->ret_info.count1);
}
acpi_os_printf("\n");
/* Check that the declared argument count matches the ACPI spec */
acpi_ns_check_acpi_compliance(pathname, node, predefined);
ACPI_FREE(pathname);
(*count)++;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_check_predefined_names
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Validate all predefined names in the namespace
*
******************************************************************************/
void acpi_db_check_predefined_names(void)
{
u32 count = 0;
/* Search all nodes in namespace */
(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
acpi_db_walk_for_predefined_names, NULL,
(void *)&count, NULL);
acpi_os_printf("Found %u predefined names in the namespace\n", count);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_walk_for_object_counts
*
* PARAMETERS: Callback from walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Display short info about objects in the namespace
*
******************************************************************************/
static acpi_status
acpi_db_walk_for_object_counts(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value)
{
struct acpi_object_info *info = (struct acpi_object_info *)context;
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
if (node->type > ACPI_TYPE_NS_NODE_MAX) {
acpi_os_printf("[%4.4s]: Unknown object type %X\n",
node->name.ascii, node->type);
} else {
info->types[node->type]++;
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_walk_for_fields
*
* PARAMETERS: Callback from walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Display short info about objects in the namespace
*
******************************************************************************/
static acpi_status
acpi_db_walk_for_fields(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value)
{
union acpi_object *ret_value;
struct acpi_region_walk_info *info =
(struct acpi_region_walk_info *)context;
struct acpi_buffer buffer;
acpi_status status;
struct acpi_namespace_node *node = acpi_ns_validate_handle(obj_handle);
if (!node) {
return (AE_OK);
}
if (node->object->field.region_obj->region.space_id !=
info->address_space_id) {
return (AE_OK);
}
info->count++;
/* Get and display the full pathname to this object */
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_ns_handle_to_pathname(obj_handle, &buffer, TRUE);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could Not get pathname for object %p\n",
obj_handle);
return (AE_OK);
}
acpi_os_printf("%s ", (char *)buffer.pointer);
ACPI_FREE(buffer.pointer);
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
acpi_evaluate_object(obj_handle, NULL, NULL, &buffer);
/*
* Since this is a field unit, surround the output in braces
*/
acpi_os_printf("{");
ret_value = (union acpi_object *)buffer.pointer;
switch (ret_value->type) {
case ACPI_TYPE_INTEGER:
acpi_os_printf("%8.8X%8.8X",
ACPI_FORMAT_UINT64(ret_value->integer.value));
break;
case ACPI_TYPE_BUFFER:
acpi_ut_dump_buffer(ret_value->buffer.pointer,
ret_value->buffer.length,
DB_DISPLAY_DATA_ONLY | DB_BYTE_DISPLAY, 0);
break;
default:
break;
}
acpi_os_printf("}\n");
ACPI_FREE(buffer.pointer);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_walk_for_specific_objects
*
* PARAMETERS: Callback from walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Display short info about objects in the namespace
*
******************************************************************************/
static acpi_status
acpi_db_walk_for_specific_objects(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value)
{
struct acpi_walk_info *info = (struct acpi_walk_info *)context;
struct acpi_buffer buffer;
acpi_status status;
info->count++;
/* Get and display the full pathname to this object */
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_ns_handle_to_pathname(obj_handle, &buffer, TRUE);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could Not get pathname for object %p\n",
obj_handle);
return (AE_OK);
}
acpi_os_printf("%32s", (char *)buffer.pointer);
ACPI_FREE(buffer.pointer);
/* Dump short info about the object */
(void)acpi_ns_dump_one_object(obj_handle, nesting_level, info, NULL);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_display_objects
*
* PARAMETERS: obj_type_arg - Type of object to display
* display_count_arg - Max depth to display
*
* RETURN: None
*
* DESCRIPTION: Display objects in the namespace of the requested type
*
******************************************************************************/
acpi_status acpi_db_display_objects(char *obj_type_arg, char *display_count_arg)
{
struct acpi_walk_info info;
acpi_object_type type;
struct acpi_object_info *object_info;
u32 i;
u32 total_objects = 0;
/* No argument means display summary/count of all object types */
if (!obj_type_arg) {
object_info =
ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_object_info));
if (!object_info)
return (AE_NO_MEMORY);
/* Walk the namespace from the root */
(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
acpi_db_walk_for_object_counts, NULL,
(void *)object_info, NULL);
acpi_os_printf("\nSummary of namespace objects:\n\n");
for (i = 0; i < ACPI_TOTAL_TYPES; i++) {
acpi_os_printf("%8u %s\n", object_info->types[i],
acpi_ut_get_type_name(i));
total_objects += object_info->types[i];
}
acpi_os_printf("\n%8u Total namespace objects\n\n",
total_objects);
ACPI_FREE(object_info);
return (AE_OK);
}
/* Get the object type */
type = acpi_db_match_argument(obj_type_arg, acpi_db_object_types);
if (type == ACPI_TYPE_NOT_FOUND) {
acpi_os_printf("Invalid or unsupported argument\n");
return (AE_OK);
}
acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
acpi_os_printf
("Objects of type [%s] defined in the current ACPI Namespace:\n",
acpi_ut_get_type_name(type));
acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
info.count = 0;
info.owner_id = ACPI_OWNER_ID_MAX;
info.debug_level = ACPI_UINT32_MAX;
info.display_type = ACPI_DISPLAY_SUMMARY | ACPI_DISPLAY_SHORT;
/* Walk the namespace from the root */
(void)acpi_walk_namespace(type, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
acpi_db_walk_for_specific_objects, NULL,
(void *)&info, NULL);
acpi_os_printf
("\nFound %u objects of type [%s] in the current ACPI Namespace\n",
info.count, acpi_ut_get_type_name(type));
acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_display_fields
*
* PARAMETERS: obj_type_arg - Type of object to display
* display_count_arg - Max depth to display
*
* RETURN: None
*
* DESCRIPTION: Display objects in the namespace of the requested type
*
******************************************************************************/
acpi_status acpi_db_display_fields(u32 address_space_id)
{
struct acpi_region_walk_info info;
info.count = 0;
info.owner_id = ACPI_OWNER_ID_MAX;
info.debug_level = ACPI_UINT32_MAX;
info.display_type = ACPI_DISPLAY_SUMMARY | ACPI_DISPLAY_SHORT;
info.address_space_id = address_space_id;
/* Walk the namespace from the root */
(void)acpi_walk_namespace(ACPI_TYPE_LOCAL_REGION_FIELD,
ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
acpi_db_walk_for_fields, NULL, (void *)&info,
NULL);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_integrity_walk
*
* PARAMETERS: Callback from walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Examine one NS node for valid values.
*
******************************************************************************/
static acpi_status
acpi_db_integrity_walk(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value)
{
struct acpi_integrity_info *info =
(struct acpi_integrity_info *)context;
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
union acpi_operand_object *object;
u8 alias = TRUE;
info->nodes++;
/* Verify the NS node, and dereference aliases */
while (alias) {
if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
acpi_os_printf
("Invalid Descriptor Type for Node %p [%s] - "
"is %2.2X should be %2.2X\n", node,
acpi_ut_get_descriptor_name(node),
ACPI_GET_DESCRIPTOR_TYPE(node),
ACPI_DESC_TYPE_NAMED);
return (AE_OK);
}
if ((node->type == ACPI_TYPE_LOCAL_ALIAS) ||
(node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) {
node = (struct acpi_namespace_node *)node->object;
} else {
alias = FALSE;
}
}
if (node->type > ACPI_TYPE_LOCAL_MAX) {
acpi_os_printf("Invalid Object Type for Node %p, Type = %X\n",
node, node->type);
return (AE_OK);
}
if (!acpi_ut_valid_nameseg(node->name.ascii)) {
acpi_os_printf("Invalid AcpiName for Node %p\n", node);
return (AE_OK);
}
object = acpi_ns_get_attached_object(node);
if (object) {
info->objects++;
if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) {
acpi_os_printf
("Invalid Descriptor Type for Object %p [%s]\n",
object, acpi_ut_get_descriptor_name(object));
}
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_check_integrity
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Check entire namespace for data structure integrity
*
******************************************************************************/
void acpi_db_check_integrity(void)
{
struct acpi_integrity_info info = { 0, 0 };
/* Search all nodes in namespace */
(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, acpi_db_integrity_walk, NULL,
(void *)&info, NULL);
acpi_os_printf("Verified %u namespace nodes with %u Objects\n",
info.nodes, info.objects);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_walk_for_references
*
* PARAMETERS: Callback from walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Check if this namespace object refers to the target object
* that is passed in as the context value.
*
* Note: Currently doesn't check subobjects within the Node's object
*
******************************************************************************/
static acpi_status
acpi_db_walk_for_references(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value)
{
union acpi_operand_object *obj_desc =
(union acpi_operand_object *)context;
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
/* Check for match against the namespace node itself */
if (node == (void *)obj_desc) {
acpi_os_printf("Object is a Node [%4.4s]\n",
acpi_ut_get_node_name(node));
}
/* Check for match against the object attached to the node */
if (acpi_ns_get_attached_object(node) == obj_desc) {
acpi_os_printf("Reference at Node->Object %p [%4.4s]\n",
node, acpi_ut_get_node_name(node));
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_find_references
*
* PARAMETERS: object_arg - String with hex value of the object
*
* RETURN: None
*
* DESCRIPTION: Search namespace for all references to the input object
*
******************************************************************************/
void acpi_db_find_references(char *object_arg)
{
union acpi_operand_object *obj_desc;
acpi_size address;
/* Convert string to object pointer */
address = strtoul(object_arg, NULL, 16);
obj_desc = ACPI_TO_POINTER(address);
/* Search all nodes in namespace */
(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, acpi_db_walk_for_references,
NULL, (void *)obj_desc, NULL);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_bus_walk
*
* PARAMETERS: Callback from walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Display info about device objects that have a corresponding
* _PRT method.
*
******************************************************************************/
static acpi_status
acpi_db_bus_walk(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value)
{
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
acpi_status status;
struct acpi_buffer buffer;
struct acpi_namespace_node *temp_node;
struct acpi_device_info *info;
u32 i;
if ((node->type != ACPI_TYPE_DEVICE) &&
(node->type != ACPI_TYPE_PROCESSOR)) {
return (AE_OK);
}
/* Exit if there is no _PRT under this device */
status = acpi_get_handle(node, METHOD_NAME__PRT,
ACPI_CAST_PTR(acpi_handle, &temp_node));
if (ACPI_FAILURE(status)) {
return (AE_OK);
}
/* Get the full path to this device object */
buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
status = acpi_ns_handle_to_pathname(obj_handle, &buffer, TRUE);
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could Not get pathname for object %p\n",
obj_handle);
return (AE_OK);
}
status = acpi_get_object_info(obj_handle, &info);
if (ACPI_FAILURE(status)) {
return (AE_OK);
}
/* Display the full path */
acpi_os_printf("%-32s Type %X", (char *)buffer.pointer, node->type);
ACPI_FREE(buffer.pointer);
if (info->flags & ACPI_PCI_ROOT_BRIDGE) {
acpi_os_printf(" - Is PCI Root Bridge");
}
acpi_os_printf("\n");
/* _PRT info */
acpi_os_printf("_PRT: %p\n", temp_node);
/* Dump _ADR, _HID, _UID, _CID */
if (info->valid & ACPI_VALID_ADR) {
acpi_os_printf("_ADR: %8.8X%8.8X\n",
ACPI_FORMAT_UINT64(info->address));
} else {
acpi_os_printf("_ADR: <Not Present>\n");
}
if (info->valid & ACPI_VALID_HID) {
acpi_os_printf("_HID: %s\n", info->hardware_id.string);
} else {
acpi_os_printf("_HID: <Not Present>\n");
}
if (info->valid & ACPI_VALID_UID) {
acpi_os_printf("_UID: %s\n", info->unique_id.string);
} else {
acpi_os_printf("_UID: <Not Present>\n");
}
if (info->valid & ACPI_VALID_CID) {
for (i = 0; i < info->compatible_id_list.count; i++) {
acpi_os_printf("_CID: %s\n",
info->compatible_id_list.ids[i].string);
}
} else {
acpi_os_printf("_CID: <Not Present>\n");
}
ACPI_FREE(info);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_get_bus_info
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Display info about system buses.
*
******************************************************************************/
void acpi_db_get_bus_info(void)
{
/* Search all nodes in namespace */
(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, acpi_db_bus_walk, NULL, NULL,
NULL);
}
| linux-master | drivers/acpi/acpica/dbnames.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: exoparg2 - AML execution - opcodes with 2 arguments
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "acinterp.h"
#include "acevents.h"
#include "amlcode.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("exoparg2")
/*!
* Naming convention for AML interpreter execution routines.
*
* The routines that begin execution of AML opcodes are named with a common
* convention based upon the number of arguments, the number of target operands,
* and whether or not a value is returned:
*
* AcpiExOpcode_xA_yT_zR
*
* Where:
*
* xA - ARGUMENTS: The number of arguments (input operands) that are
* required for this opcode type (1 through 6 args).
* yT - TARGETS: The number of targets (output operands) that are required
* for this opcode type (0, 1, or 2 targets).
* zR - RETURN VALUE: Indicates whether this opcode type returns a value
* as the function return (0 or 1).
*
* The AcpiExOpcode* functions are called via the Dispatcher component with
* fully resolved operands.
!*/
/*******************************************************************************
*
* FUNCTION: acpi_ex_opcode_2A_0T_0R
*
* PARAMETERS: walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Execute opcode with two arguments, no target, and no return
* value.
*
* ALLOCATION: Deletes both operands
*
******************************************************************************/
acpi_status acpi_ex_opcode_2A_0T_0R(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
struct acpi_namespace_node *node;
u32 value;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_0T_0R,
acpi_ps_get_opcode_name(walk_state->opcode));
/* Examine the opcode */
switch (walk_state->opcode) {
case AML_NOTIFY_OP: /* Notify (notify_object, notify_value) */
/* The first operand is a namespace node */
node = (struct acpi_namespace_node *)operand[0];
/* Second value is the notify value */
value = (u32) operand[1]->integer.value;
/* Are notifies allowed on this object? */
if (!acpi_ev_is_notify_object(node)) {
ACPI_ERROR((AE_INFO,
"Unexpected notify object type [%s]",
acpi_ut_get_type_name(node->type)));
status = AE_AML_OPERAND_TYPE;
break;
}
/*
* Dispatch the notify to the appropriate handler
* NOTE: the request is queued for execution after this method
* completes. The notify handlers are NOT invoked synchronously
* from this thread -- because handlers may in turn run other
* control methods.
*/
status = acpi_ev_queue_notify_request(node, value);
break;
default:
ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_opcode_2A_2T_1R
*
* PARAMETERS: walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Execute a dyadic operator (2 operands) with 2 output targets
* and one implicit return value.
*
******************************************************************************/
acpi_status acpi_ex_opcode_2A_2T_1R(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *return_desc1 = NULL;
union acpi_operand_object *return_desc2 = NULL;
acpi_status status;
ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_2T_1R,
acpi_ps_get_opcode_name(walk_state->opcode));
/* Execute the opcode */
switch (walk_state->opcode) {
case AML_DIVIDE_OP:
/* Divide (Dividend, Divisor, remainder_result quotient_result) */
return_desc1 =
acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!return_desc1) {
status = AE_NO_MEMORY;
goto cleanup;
}
return_desc2 =
acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!return_desc2) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Quotient to return_desc1, remainder to return_desc2 */
status = acpi_ut_divide(operand[0]->integer.value,
operand[1]->integer.value,
&return_desc1->integer.value,
&return_desc2->integer.value);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
break;
default:
ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
/* Store the results to the target reference operands */
status = acpi_ex_store(return_desc2, operand[2], walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
status = acpi_ex_store(return_desc1, operand[3], walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
cleanup:
/*
* Since the remainder is not returned indirectly, remove a reference to
* it. Only the quotient is returned indirectly.
*/
acpi_ut_remove_reference(return_desc2);
if (ACPI_FAILURE(status)) {
/* Delete the return object */
acpi_ut_remove_reference(return_desc1);
}
/* Save return object (the remainder) on success */
else {
walk_state->result_obj = return_desc1;
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_opcode_2A_1T_1R
*
* PARAMETERS: walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Execute opcode with two arguments, one target, and a return
* value.
*
******************************************************************************/
acpi_status acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *return_desc = NULL;
u64 index;
acpi_status status = AE_OK;
acpi_size length = 0;
ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_1T_1R,
acpi_ps_get_opcode_name(walk_state->opcode));
/* Execute the opcode */
if (walk_state->op_info->flags & AML_MATH) {
/* All simple math opcodes (add, etc.) */
return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
return_desc->integer.value =
acpi_ex_do_math_op(walk_state->opcode,
operand[0]->integer.value,
operand[1]->integer.value);
goto store_result_to_target;
}
switch (walk_state->opcode) {
case AML_MOD_OP: /* Mod (Dividend, Divisor, remainder_result (ACPI 2.0) */
return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* return_desc will contain the remainder */
status = acpi_ut_divide(operand[0]->integer.value,
operand[1]->integer.value,
NULL, &return_desc->integer.value);
break;
case AML_CONCATENATE_OP: /* Concatenate (Data1, Data2, Result) */
status =
acpi_ex_do_concatenate(operand[0], operand[1], &return_desc,
walk_state);
break;
case AML_TO_STRING_OP: /* to_string (Buffer, Length, Result) (ACPI 2.0) */
/*
* Input object is guaranteed to be a buffer at this point (it may have
* been converted.) Copy the raw buffer data to a new object of
* type String.
*/
/*
* Get the length of the new string. It is the smallest of:
* 1) Length of the input buffer
* 2) Max length as specified in the to_string operator
* 3) Length of input buffer up to a zero byte (null terminator)
*
* NOTE: A length of zero is ok, and will create a zero-length, null
* terminated string.
*/
while ((length < operand[0]->buffer.length) && /* Length of input buffer */
(length < operand[1]->integer.value) && /* Length operand */
(operand[0]->buffer.pointer[length])) { /* Null terminator */
length++;
}
/* Allocate a new string object */
return_desc = acpi_ut_create_string_object(length);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/*
* Copy the raw buffer data with no transform.
* (NULL terminated already)
*/
memcpy(return_desc->string.pointer,
operand[0]->buffer.pointer, length);
break;
case AML_CONCATENATE_TEMPLATE_OP:
/* concatenate_res_template (Buffer, Buffer, Result) (ACPI 2.0) */
status =
acpi_ex_concat_template(operand[0], operand[1],
&return_desc, walk_state);
break;
case AML_INDEX_OP: /* Index (Source Index Result) */
/* Create the internal return object */
return_desc =
acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Initialize the Index reference object */
index = operand[1]->integer.value;
return_desc->reference.value = (u32) index;
return_desc->reference.class = ACPI_REFCLASS_INDEX;
/*
* At this point, the Source operand is a String, Buffer, or Package.
* Verify that the index is within range.
*/
switch ((operand[0])->common.type) {
case ACPI_TYPE_STRING:
if (index >= operand[0]->string.length) {
length = operand[0]->string.length;
status = AE_AML_STRING_LIMIT;
}
return_desc->reference.target_type =
ACPI_TYPE_BUFFER_FIELD;
return_desc->reference.index_pointer =
&(operand[0]->buffer.pointer[index]);
break;
case ACPI_TYPE_BUFFER:
if (index >= operand[0]->buffer.length) {
length = operand[0]->buffer.length;
status = AE_AML_BUFFER_LIMIT;
}
return_desc->reference.target_type =
ACPI_TYPE_BUFFER_FIELD;
return_desc->reference.index_pointer =
&(operand[0]->buffer.pointer[index]);
break;
case ACPI_TYPE_PACKAGE:
if (index >= operand[0]->package.count) {
length = operand[0]->package.count;
status = AE_AML_PACKAGE_LIMIT;
}
return_desc->reference.target_type = ACPI_TYPE_PACKAGE;
return_desc->reference.where =
&operand[0]->package.elements[index];
break;
default:
ACPI_ERROR((AE_INFO,
"Invalid object type: %X",
(operand[0])->common.type));
status = AE_AML_INTERNAL;
goto cleanup;
}
/* Failure means that the Index was beyond the end of the object */
if (ACPI_FAILURE(status)) {
ACPI_BIOS_EXCEPTION((AE_INFO, status,
"Index (0x%X%8.8X) is beyond end of object (length 0x%X)",
ACPI_FORMAT_UINT64(index),
(u32)length));
goto cleanup;
}
/*
* Save the target object and add a reference to it for the life
* of the index
*/
return_desc->reference.object = operand[0];
acpi_ut_add_reference(operand[0]);
/* Store the reference to the Target */
status = acpi_ex_store(return_desc, operand[2], walk_state);
/* Return the reference */
walk_state->result_obj = return_desc;
goto cleanup;
default:
ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
break;
}
store_result_to_target:
if (ACPI_SUCCESS(status)) {
/*
* Store the result of the operation (which is now in return_desc) into
* the Target descriptor.
*/
status = acpi_ex_store(return_desc, operand[2], walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
if (!walk_state->result_obj) {
walk_state->result_obj = return_desc;
}
}
cleanup:
/* Delete return object on error */
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference(return_desc);
walk_state->result_obj = NULL;
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_opcode_2A_0T_1R
*
* PARAMETERS: walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Execute opcode with 2 arguments, no target, and a return value
*
******************************************************************************/
acpi_status acpi_ex_opcode_2A_0T_1R(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *return_desc = NULL;
acpi_status status = AE_OK;
u8 logical_result = FALSE;
ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_0T_1R,
acpi_ps_get_opcode_name(walk_state->opcode));
/* Create the internal return object */
return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Execute the Opcode */
if (walk_state->op_info->flags & AML_LOGICAL_NUMERIC) {
/* logical_op (Operand0, Operand1) */
status = acpi_ex_do_logical_numeric_op(walk_state->opcode,
operand[0]->integer.
value,
operand[1]->integer.
value, &logical_result);
goto store_logical_result;
} else if (walk_state->op_info->flags & AML_LOGICAL) {
/* logical_op (Operand0, Operand1) */
status = acpi_ex_do_logical_op(walk_state->opcode, operand[0],
operand[1], &logical_result);
goto store_logical_result;
}
switch (walk_state->opcode) {
case AML_ACQUIRE_OP: /* Acquire (mutex_object, Timeout) */
status =
acpi_ex_acquire_mutex(operand[1], operand[0], walk_state);
if (status == AE_TIME) {
logical_result = TRUE; /* TRUE = Acquire timed out */
status = AE_OK;
}
break;
case AML_WAIT_OP: /* Wait (event_object, Timeout) */
status = acpi_ex_system_wait_event(operand[1], operand[0]);
if (status == AE_TIME) {
logical_result = TRUE; /* TRUE, Wait timed out */
status = AE_OK;
}
break;
default:
ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
store_logical_result:
/*
* Set return value to according to logical_result. logical TRUE (all ones)
* Default is FALSE (zero)
*/
if (logical_result) {
return_desc->integer.value = ACPI_UINT64_MAX;
}
cleanup:
/* Delete return object on error */
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference(return_desc);
}
/* Save return object on success */
else {
walk_state->result_obj = return_desc;
}
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/exoparg2.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: utcksum - Support generating table checksums
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acutils.h"
/* This module used for application-level code only */
#define _COMPONENT ACPI_CA_DISASSEMBLER
ACPI_MODULE_NAME("utcksum")
/*******************************************************************************
*
* FUNCTION: acpi_ut_verify_checksum
*
* PARAMETERS: table - ACPI table to verify
* length - Length of entire table
*
* RETURN: Status
*
* DESCRIPTION: Verifies that the table checksums to zero. Optionally returns
* exception on bad checksum.
* Note: We don't have to check for a CDAT here, since CDAT is
* not in the RSDT/XSDT, and the CDAT table is never installed
* via ACPICA.
*
******************************************************************************/
acpi_status acpi_ut_verify_checksum(struct acpi_table_header *table, u32 length)
{
u8 checksum;
/*
* FACS/S3PT:
* They are the odd tables, have no standard ACPI header and no checksum
*/
if (ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_S3PT) ||
ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_FACS)) {
return (AE_OK);
}
/* Compute the checksum on the table */
length = table->length;
checksum =
acpi_ut_generate_checksum(ACPI_CAST_PTR(u8, table), length,
table->checksum);
/* Computed checksum matches table? */
if (checksum != table->checksum) {
ACPI_BIOS_WARNING((AE_INFO,
"Incorrect checksum in table [%4.4s] - 0x%2.2X, "
"should be 0x%2.2X",
table->signature, table->checksum,
table->checksum - checksum));
#if (ACPI_CHECKSUM_ABORT)
return (AE_BAD_CHECKSUM);
#endif
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_verify_cdat_checksum
*
* PARAMETERS: table - CDAT ACPI table to verify
* length - Length of entire table
*
* RETURN: Status
*
* DESCRIPTION: Verifies that the CDAT table checksums to zero. Optionally
* returns an exception on bad checksum.
*
******************************************************************************/
acpi_status
acpi_ut_verify_cdat_checksum(struct acpi_table_cdat *cdat_table, u32 length)
{
u8 checksum;
/* Compute the checksum on the table */
checksum = acpi_ut_generate_checksum(ACPI_CAST_PTR(u8, cdat_table),
cdat_table->length,
cdat_table->checksum);
/* Computed checksum matches table? */
if (checksum != cdat_table->checksum) {
ACPI_BIOS_WARNING((AE_INFO,
"Incorrect checksum in table [%4.4s] - 0x%2.2X, "
"should be 0x%2.2X",
acpi_gbl_CDAT, cdat_table->checksum,
checksum));
#if (ACPI_CHECKSUM_ABORT)
return (AE_BAD_CHECKSUM);
#endif
}
cdat_table->checksum = checksum;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_generate_checksum
*
* PARAMETERS: table - Pointer to table to be checksummed
* length - Length of the table
* original_checksum - Value of the checksum field
*
* RETURN: 8 bit checksum of buffer
*
* DESCRIPTION: Computes an 8 bit checksum of the table.
*
******************************************************************************/
u8 acpi_ut_generate_checksum(void *table, u32 length, u8 original_checksum)
{
u8 checksum;
/* Sum the entire table as-is */
checksum = acpi_ut_checksum((u8 *)table, length);
/* Subtract off the existing checksum value in the table */
checksum = (u8)(checksum - original_checksum);
/* Compute and return the final checksum */
checksum = (u8)(0 - checksum);
return (checksum);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_checksum
*
* PARAMETERS: buffer - Pointer to memory region to be checked
* length - Length of this memory region
*
* RETURN: Checksum (u8)
*
* DESCRIPTION: Calculates circular checksum of memory region.
*
******************************************************************************/
u8 acpi_ut_checksum(u8 *buffer, u32 length)
{
u8 sum = 0;
u8 *end = buffer + length;
while (buffer < end) {
sum = (u8)(sum + *(buffer++));
}
return (sum);
}
| linux-master | drivers/acpi/acpica/utcksum.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: hwgpe - Low level GPE enable/disable/clear functions
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acevents.h"
#define _COMPONENT ACPI_HARDWARE
ACPI_MODULE_NAME("hwgpe")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/* Local prototypes */
static acpi_status
acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
struct acpi_gpe_block_info *gpe_block,
void *context);
static acpi_status
acpi_hw_gpe_enable_write(u8 enable_mask,
struct acpi_gpe_register_info *gpe_register_info);
/******************************************************************************
*
* FUNCTION: acpi_hw_gpe_read
*
* PARAMETERS: value - Where the value is returned
* reg - GPE register structure
*
* RETURN: Status
*
* DESCRIPTION: Read from a GPE register in either memory or IO space.
*
* LIMITATIONS: <These limitations also apply to acpi_hw_gpe_write>
* space_ID must be system_memory or system_IO.
*
******************************************************************************/
acpi_status acpi_hw_gpe_read(u64 *value, struct acpi_gpe_address *reg)
{
acpi_status status;
u32 value32;
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
#ifdef ACPI_GPE_USE_LOGICAL_ADDRESSES
*value = (u64)ACPI_GET8((unsigned long)reg->address);
return_ACPI_STATUS(AE_OK);
#else
return acpi_os_read_memory((acpi_physical_address)reg->address,
value, ACPI_GPE_REGISTER_WIDTH);
#endif
}
status = acpi_os_read_port((acpi_io_address)reg->address,
&value32, ACPI_GPE_REGISTER_WIDTH);
if (ACPI_FAILURE(status))
return_ACPI_STATUS(status);
*value = (u64)value32;
return_ACPI_STATUS(AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_gpe_write
*
* PARAMETERS: value - Value to be written
* reg - GPE register structure
*
* RETURN: Status
*
* DESCRIPTION: Write to a GPE register in either memory or IO space.
*
******************************************************************************/
acpi_status acpi_hw_gpe_write(u64 value, struct acpi_gpe_address *reg)
{
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
#ifdef ACPI_GPE_USE_LOGICAL_ADDRESSES
ACPI_SET8((unsigned long)reg->address, value);
return_ACPI_STATUS(AE_OK);
#else
return acpi_os_write_memory((acpi_physical_address)reg->address,
value, ACPI_GPE_REGISTER_WIDTH);
#endif
}
return acpi_os_write_port((acpi_io_address)reg->address, (u32)value,
ACPI_GPE_REGISTER_WIDTH);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_get_gpe_register_bit
*
* PARAMETERS: gpe_event_info - Info block for the GPE
*
* RETURN: Register mask with a one in the GPE bit position
*
* DESCRIPTION: Compute the register mask for this GPE. One bit is set in the
* correct position for the input GPE.
*
******************************************************************************/
u32 acpi_hw_get_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info)
{
return ((u32)1 <<
(gpe_event_info->gpe_number -
gpe_event_info->register_info->base_gpe_number));
}
/******************************************************************************
*
* FUNCTION: acpi_hw_low_set_gpe
*
* PARAMETERS: gpe_event_info - Info block for the GPE to be disabled
* action - Enable or disable
*
* RETURN: Status
*
* DESCRIPTION: Enable or disable a single GPE in the parent enable register.
* The enable_mask field of the involved GPE register must be
* updated by the caller if necessary.
*
******************************************************************************/
acpi_status
acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u32 action)
{
struct acpi_gpe_register_info *gpe_register_info;
acpi_status status = AE_OK;
u64 enable_mask;
u32 register_bit;
ACPI_FUNCTION_ENTRY();
/* Get the info block for the entire GPE register */
gpe_register_info = gpe_event_info->register_info;
if (!gpe_register_info) {
return (AE_NOT_EXIST);
}
/* Get current value of the enable register that contains this GPE */
status = acpi_hw_gpe_read(&enable_mask,
&gpe_register_info->enable_address);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Set or clear just the bit that corresponds to this GPE */
register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
switch (action) {
case ACPI_GPE_CONDITIONAL_ENABLE:
/* Only enable if the corresponding enable_mask bit is set */
if (!(register_bit & gpe_register_info->enable_mask)) {
return (AE_BAD_PARAMETER);
}
ACPI_FALLTHROUGH;
case ACPI_GPE_ENABLE:
ACPI_SET_BIT(enable_mask, register_bit);
break;
case ACPI_GPE_DISABLE:
ACPI_CLEAR_BIT(enable_mask, register_bit);
break;
default:
ACPI_ERROR((AE_INFO, "Invalid GPE Action, %u", action));
return (AE_BAD_PARAMETER);
}
if (!(register_bit & gpe_register_info->mask_for_run)) {
/* Write the updated enable mask */
status = acpi_hw_gpe_write(enable_mask,
&gpe_register_info->enable_address);
}
return (status);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_clear_gpe
*
* PARAMETERS: gpe_event_info - Info block for the GPE to be cleared
*
* RETURN: Status
*
* DESCRIPTION: Clear the status bit for a single GPE.
*
******************************************************************************/
acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info *gpe_event_info)
{
struct acpi_gpe_register_info *gpe_register_info;
acpi_status status;
u32 register_bit;
ACPI_FUNCTION_ENTRY();
/* Get the info block for the entire GPE register */
gpe_register_info = gpe_event_info->register_info;
if (!gpe_register_info) {
return (AE_NOT_EXIST);
}
/*
* Write a one to the appropriate bit in the status register to
* clear this GPE.
*/
register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
status = acpi_hw_gpe_write(register_bit,
&gpe_register_info->status_address);
return (status);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_get_gpe_status
*
* PARAMETERS: gpe_event_info - Info block for the GPE to queried
* event_status - Where the GPE status is returned
*
* RETURN: Status
*
* DESCRIPTION: Return the status of a single GPE.
*
******************************************************************************/
acpi_status
acpi_hw_get_gpe_status(struct acpi_gpe_event_info *gpe_event_info,
acpi_event_status *event_status)
{
u64 in_byte;
u32 register_bit;
struct acpi_gpe_register_info *gpe_register_info;
acpi_event_status local_event_status = 0;
acpi_status status;
ACPI_FUNCTION_ENTRY();
if (!event_status) {
return (AE_BAD_PARAMETER);
}
/* GPE currently handled? */
if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) !=
ACPI_GPE_DISPATCH_NONE) {
local_event_status |= ACPI_EVENT_FLAG_HAS_HANDLER;
}
/* Get the info block for the entire GPE register */
gpe_register_info = gpe_event_info->register_info;
/* Get the register bitmask for this GPE */
register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
/* GPE currently enabled? (enabled for runtime?) */
if (register_bit & gpe_register_info->enable_for_run) {
local_event_status |= ACPI_EVENT_FLAG_ENABLED;
}
/* GPE currently masked? (masked for runtime?) */
if (register_bit & gpe_register_info->mask_for_run) {
local_event_status |= ACPI_EVENT_FLAG_MASKED;
}
/* GPE enabled for wake? */
if (register_bit & gpe_register_info->enable_for_wake) {
local_event_status |= ACPI_EVENT_FLAG_WAKE_ENABLED;
}
/* GPE currently enabled (enable bit == 1)? */
status = acpi_hw_gpe_read(&in_byte, &gpe_register_info->enable_address);
if (ACPI_FAILURE(status)) {
return (status);
}
if (register_bit & in_byte) {
local_event_status |= ACPI_EVENT_FLAG_ENABLE_SET;
}
/* GPE currently active (status bit == 1)? */
status = acpi_hw_gpe_read(&in_byte, &gpe_register_info->status_address);
if (ACPI_FAILURE(status)) {
return (status);
}
if (register_bit & in_byte) {
local_event_status |= ACPI_EVENT_FLAG_STATUS_SET;
}
/* Set return value */
(*event_status) = local_event_status;
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_gpe_enable_write
*
* PARAMETERS: enable_mask - Bit mask to write to the GPE register
* gpe_register_info - Gpe Register info
*
* RETURN: Status
*
* DESCRIPTION: Write the enable mask byte to the given GPE register.
*
******************************************************************************/
static acpi_status
acpi_hw_gpe_enable_write(u8 enable_mask,
struct acpi_gpe_register_info *gpe_register_info)
{
acpi_status status;
gpe_register_info->enable_mask = enable_mask;
status = acpi_hw_gpe_write(enable_mask,
&gpe_register_info->enable_address);
return (status);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_disable_gpe_block
*
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
* gpe_block - Gpe Block info
*
* RETURN: Status
*
* DESCRIPTION: Disable all GPEs within a single GPE block
*
******************************************************************************/
acpi_status
acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
struct acpi_gpe_block_info *gpe_block, void *context)
{
u32 i;
acpi_status status;
/* Examine each GPE Register within the block */
for (i = 0; i < gpe_block->register_count; i++) {
/* Disable all GPEs in this register */
status =
acpi_hw_gpe_enable_write(0x00,
&gpe_block->register_info[i]);
if (ACPI_FAILURE(status)) {
return (status);
}
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_clear_gpe_block
*
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
* gpe_block - Gpe Block info
*
* RETURN: Status
*
* DESCRIPTION: Clear status bits for all GPEs within a single GPE block
*
******************************************************************************/
acpi_status
acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
struct acpi_gpe_block_info *gpe_block, void *context)
{
u32 i;
acpi_status status;
/* Examine each GPE Register within the block */
for (i = 0; i < gpe_block->register_count; i++) {
/* Clear status on all GPEs in this register */
status = acpi_hw_gpe_write(0xFF,
&gpe_block->register_info[i].status_address);
if (ACPI_FAILURE(status)) {
return (status);
}
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_enable_runtime_gpe_block
*
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
* gpe_block - Gpe Block info
*
* RETURN: Status
*
* DESCRIPTION: Enable all "runtime" GPEs within a single GPE block. Includes
* combination wake/run GPEs.
*
******************************************************************************/
acpi_status
acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
struct acpi_gpe_block_info *gpe_block,
void *context)
{
u32 i;
acpi_status status;
struct acpi_gpe_register_info *gpe_register_info;
u8 enable_mask;
/* NOTE: assumes that all GPEs are currently disabled */
/* Examine each GPE Register within the block */
for (i = 0; i < gpe_block->register_count; i++) {
gpe_register_info = &gpe_block->register_info[i];
if (!gpe_register_info->enable_for_run) {
continue;
}
/* Enable all "runtime" GPEs in this register */
enable_mask = gpe_register_info->enable_for_run &
~gpe_register_info->mask_for_run;
status =
acpi_hw_gpe_enable_write(enable_mask, gpe_register_info);
if (ACPI_FAILURE(status)) {
return (status);
}
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_enable_wakeup_gpe_block
*
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
* gpe_block - Gpe Block info
*
* RETURN: Status
*
* DESCRIPTION: Enable all "wake" GPEs within a single GPE block. Includes
* combination wake/run GPEs.
*
******************************************************************************/
static acpi_status
acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
struct acpi_gpe_block_info *gpe_block,
void *context)
{
u32 i;
acpi_status status;
struct acpi_gpe_register_info *gpe_register_info;
/* Examine each GPE Register within the block */
for (i = 0; i < gpe_block->register_count; i++) {
gpe_register_info = &gpe_block->register_info[i];
/*
* Enable all "wake" GPEs in this register and disable the
* remaining ones.
*/
status =
acpi_hw_gpe_enable_write(gpe_register_info->enable_for_wake,
gpe_register_info);
if (ACPI_FAILURE(status)) {
return (status);
}
}
return (AE_OK);
}
struct acpi_gpe_block_status_context {
struct acpi_gpe_register_info *gpe_skip_register_info;
u8 gpe_skip_mask;
u8 retval;
};
/******************************************************************************
*
* FUNCTION: acpi_hw_get_gpe_block_status
*
* PARAMETERS: gpe_xrupt_info - GPE Interrupt info
* gpe_block - Gpe Block info
* context - GPE list walk context data
*
* RETURN: Success
*
* DESCRIPTION: Produce a combined GPE status bits mask for the given block.
*
******************************************************************************/
static acpi_status
acpi_hw_get_gpe_block_status(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
struct acpi_gpe_block_info *gpe_block,
void *context)
{
struct acpi_gpe_block_status_context *c = context;
struct acpi_gpe_register_info *gpe_register_info;
u64 in_enable, in_status;
acpi_status status;
u8 ret_mask;
u32 i;
/* Examine each GPE Register within the block */
for (i = 0; i < gpe_block->register_count; i++) {
gpe_register_info = &gpe_block->register_info[i];
status = acpi_hw_gpe_read(&in_enable,
&gpe_register_info->enable_address);
if (ACPI_FAILURE(status)) {
continue;
}
status = acpi_hw_gpe_read(&in_status,
&gpe_register_info->status_address);
if (ACPI_FAILURE(status)) {
continue;
}
ret_mask = in_enable & in_status;
if (ret_mask && c->gpe_skip_register_info == gpe_register_info) {
ret_mask &= ~c->gpe_skip_mask;
}
c->retval |= ret_mask;
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_disable_all_gpes
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Disable and clear all GPEs in all GPE blocks
*
******************************************************************************/
acpi_status acpi_hw_disable_all_gpes(void)
{
acpi_status status;
ACPI_FUNCTION_TRACE(hw_disable_all_gpes);
status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block, NULL);
return_ACPI_STATUS(status);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_enable_all_runtime_gpes
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks
*
******************************************************************************/
acpi_status acpi_hw_enable_all_runtime_gpes(void)
{
acpi_status status;
ACPI_FUNCTION_TRACE(hw_enable_all_runtime_gpes);
status = acpi_ev_walk_gpe_list(acpi_hw_enable_runtime_gpe_block, NULL);
return_ACPI_STATUS(status);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_enable_all_wakeup_gpes
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Enable all "wakeup" GPEs, in all GPE blocks
*
******************************************************************************/
acpi_status acpi_hw_enable_all_wakeup_gpes(void)
{
acpi_status status;
ACPI_FUNCTION_TRACE(hw_enable_all_wakeup_gpes);
status = acpi_ev_walk_gpe_list(acpi_hw_enable_wakeup_gpe_block, NULL);
return_ACPI_STATUS(status);
}
/******************************************************************************
*
* FUNCTION: acpi_hw_check_all_gpes
*
* PARAMETERS: gpe_skip_device - GPE devoce of the GPE to skip
* gpe_skip_number - Number of the GPE to skip
*
* RETURN: Combined status of all GPEs
*
* DESCRIPTION: Check all enabled GPEs in all GPE blocks, except for the one
* represented by the "skip" arguments, and return TRUE if the
* status bit is set for at least one of them of FALSE otherwise.
*
******************************************************************************/
u8 acpi_hw_check_all_gpes(acpi_handle gpe_skip_device, u32 gpe_skip_number)
{
struct acpi_gpe_block_status_context context = {
.gpe_skip_register_info = NULL,
.retval = 0,
};
struct acpi_gpe_event_info *gpe_event_info;
acpi_cpu_flags flags;
ACPI_FUNCTION_TRACE(acpi_hw_check_all_gpes);
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
gpe_event_info = acpi_ev_get_gpe_event_info(gpe_skip_device,
gpe_skip_number);
if (gpe_event_info) {
context.gpe_skip_register_info = gpe_event_info->register_info;
context.gpe_skip_mask = acpi_hw_get_gpe_register_bit(gpe_event_info);
}
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
(void)acpi_ev_walk_gpe_list(acpi_hw_get_gpe_block_status, &context);
return (context.retval != 0);
}
#endif /* !ACPI_REDUCED_HARDWARE */
| linux-master | drivers/acpi/acpica/hwgpe.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: evxface - External interfaces for ACPI events
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#define EXPORT_ACPI_INTERFACES
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acevents.h"
#include "acinterp.h"
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evxface")
#if (!ACPI_REDUCED_HARDWARE)
/* Local prototypes */
static acpi_status
acpi_ev_install_gpe_handler(acpi_handle gpe_device,
u32 gpe_number,
u32 type,
u8 is_raw_handler,
acpi_gpe_handler address, void *context);
#endif
/*******************************************************************************
*
* FUNCTION: acpi_install_notify_handler
*
* PARAMETERS: device - The device for which notifies will be handled
* handler_type - The type of handler:
* ACPI_SYSTEM_NOTIFY: System Handler (00-7F)
* ACPI_DEVICE_NOTIFY: Device Handler (80-FF)
* ACPI_ALL_NOTIFY: Both System and Device
* handler - Address of the handler
* context - Value passed to the handler on each GPE
*
* RETURN: Status
*
* DESCRIPTION: Install a handler for notifications on an ACPI Device,
* thermal_zone, or Processor object.
*
* NOTES: The Root namespace object may have only one handler for each
* type of notify (System/Device). Device/Thermal/Processor objects
* may have one device notify handler, and multiple system notify
* handlers.
*
******************************************************************************/
acpi_status
acpi_install_notify_handler(acpi_handle device,
u32 handler_type,
acpi_notify_handler handler, void *context)
{
struct acpi_namespace_node *node =
ACPI_CAST_PTR(struct acpi_namespace_node, device);
union acpi_operand_object *obj_desc;
union acpi_operand_object *handler_obj;
acpi_status status;
u32 i;
ACPI_FUNCTION_TRACE(acpi_install_notify_handler);
/* Parameter validation */
if ((!device) || (!handler) || (!handler_type) ||
(handler_type > ACPI_MAX_NOTIFY_HANDLER_TYPE)) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Root Object:
* Registering a notify handler on the root object indicates that the
* caller wishes to receive notifications for all objects. Note that
* only one global handler can be registered per notify type.
* Ensure that a handler is not already installed.
*/
if (device == ACPI_ROOT_OBJECT) {
for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
if (handler_type & (i + 1)) {
if (acpi_gbl_global_notify[i].handler) {
status = AE_ALREADY_EXISTS;
goto unlock_and_exit;
}
acpi_gbl_global_notify[i].handler = handler;
acpi_gbl_global_notify[i].context = context;
}
}
goto unlock_and_exit; /* Global notify handler installed, all done */
}
/*
* All Other Objects:
* Caller will only receive notifications specific to the target
* object. Note that only certain object types are allowed to
* receive notifications.
*/
/* Are Notifies allowed on this object? */
if (!acpi_ev_is_notify_object(node)) {
status = AE_TYPE;
goto unlock_and_exit;
}
/* Check for an existing internal object, might not exist */
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
/* Create a new object */
obj_desc = acpi_ut_create_internal_object(node->type);
if (!obj_desc) {
status = AE_NO_MEMORY;
goto unlock_and_exit;
}
/* Attach new object to the Node, remove local reference */
status = acpi_ns_attach_object(device, obj_desc, node->type);
acpi_ut_remove_reference(obj_desc);
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
}
/* Ensure that the handler is not already installed in the lists */
for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
if (handler_type & (i + 1)) {
handler_obj = obj_desc->common_notify.notify_list[i];
while (handler_obj) {
if (handler_obj->notify.handler == handler) {
status = AE_ALREADY_EXISTS;
goto unlock_and_exit;
}
handler_obj = handler_obj->notify.next[i];
}
}
}
/* Create and populate a new notify handler object */
handler_obj = acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_NOTIFY);
if (!handler_obj) {
status = AE_NO_MEMORY;
goto unlock_and_exit;
}
handler_obj->notify.node = node;
handler_obj->notify.handler_type = handler_type;
handler_obj->notify.handler = handler;
handler_obj->notify.context = context;
/* Install the handler at the list head(s) */
for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
if (handler_type & (i + 1)) {
handler_obj->notify.next[i] =
obj_desc->common_notify.notify_list[i];
obj_desc->common_notify.notify_list[i] = handler_obj;
}
}
/* Add an extra reference if handler was installed in both lists */
if (handler_type == ACPI_ALL_NOTIFY) {
acpi_ut_add_reference(handler_obj);
}
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_notify_handler)
/*******************************************************************************
*
* FUNCTION: acpi_remove_notify_handler
*
* PARAMETERS: device - The device for which the handler is installed
* handler_type - The type of handler:
* ACPI_SYSTEM_NOTIFY: System Handler (00-7F)
* ACPI_DEVICE_NOTIFY: Device Handler (80-FF)
* ACPI_ALL_NOTIFY: Both System and Device
* handler - Address of the handler
*
* RETURN: Status
*
* DESCRIPTION: Remove a handler for notifies on an ACPI device
*
******************************************************************************/
acpi_status
acpi_remove_notify_handler(acpi_handle device,
u32 handler_type, acpi_notify_handler handler)
{
struct acpi_namespace_node *node =
ACPI_CAST_PTR(struct acpi_namespace_node, device);
union acpi_operand_object *obj_desc;
union acpi_operand_object *handler_obj;
union acpi_operand_object *previous_handler_obj;
acpi_status status = AE_OK;
u32 i;
ACPI_FUNCTION_TRACE(acpi_remove_notify_handler);
/* Parameter validation */
if ((!device) || (!handler) || (!handler_type) ||
(handler_type > ACPI_MAX_NOTIFY_HANDLER_TYPE)) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Root Object. Global handlers are removed here */
if (device == ACPI_ROOT_OBJECT) {
for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
if (handler_type & (i + 1)) {
status =
acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (!acpi_gbl_global_notify[i].handler ||
(acpi_gbl_global_notify[i].handler !=
handler)) {
status = AE_NOT_EXIST;
goto unlock_and_exit;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Removing global notify handler\n"));
acpi_gbl_global_notify[i].handler = NULL;
acpi_gbl_global_notify[i].context = NULL;
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
/* Make sure all deferred notify tasks are completed */
acpi_os_wait_events_complete();
}
}
return_ACPI_STATUS(AE_OK);
}
/* All other objects: Are Notifies allowed on this object? */
if (!acpi_ev_is_notify_object(node)) {
return_ACPI_STATUS(AE_TYPE);
}
/* Must have an existing internal object */
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
/* Internal object exists. Find the handler and remove it */
for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
if (handler_type & (i + 1)) {
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
handler_obj = obj_desc->common_notify.notify_list[i];
previous_handler_obj = NULL;
/* Attempt to find the handler in the handler list */
while (handler_obj &&
(handler_obj->notify.handler != handler)) {
previous_handler_obj = handler_obj;
handler_obj = handler_obj->notify.next[i];
}
if (!handler_obj) {
status = AE_NOT_EXIST;
goto unlock_and_exit;
}
/* Remove the handler object from the list */
if (previous_handler_obj) { /* Handler is not at the list head */
previous_handler_obj->notify.next[i] =
handler_obj->notify.next[i];
} else { /* Handler is at the list head */
obj_desc->common_notify.notify_list[i] =
handler_obj->notify.next[i];
}
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
/* Make sure all deferred notify tasks are completed */
acpi_os_wait_events_complete();
acpi_ut_remove_reference(handler_obj);
}
}
return_ACPI_STATUS(status);
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_remove_notify_handler)
/*******************************************************************************
*
* FUNCTION: acpi_install_exception_handler
*
* PARAMETERS: handler - Pointer to the handler function for the
* event
*
* RETURN: Status
*
* DESCRIPTION: Saves the pointer to the handler function
*
******************************************************************************/
#ifdef ACPI_FUTURE_USAGE
acpi_status acpi_install_exception_handler(acpi_exception_handler handler)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_install_exception_handler);
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Don't allow two handlers. */
if (acpi_gbl_exception_handler) {
status = AE_ALREADY_EXISTS;
goto cleanup;
}
/* Install the handler */
acpi_gbl_exception_handler = handler;
cleanup:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_exception_handler)
#endif
#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************
*
* FUNCTION: acpi_install_sci_handler
*
* PARAMETERS: address - Address of the handler
* context - Value passed to the handler on each SCI
*
* RETURN: Status
*
* DESCRIPTION: Install a handler for a System Control Interrupt.
*
******************************************************************************/
acpi_status acpi_install_sci_handler(acpi_sci_handler address, void *context)
{
struct acpi_sci_handler_info *new_sci_handler;
struct acpi_sci_handler_info *sci_handler;
acpi_cpu_flags flags;
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_install_sci_handler);
if (!address) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Allocate and init a handler object */
new_sci_handler = ACPI_ALLOCATE(sizeof(struct acpi_sci_handler_info));
if (!new_sci_handler) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
new_sci_handler->address = address;
new_sci_handler->context = context;
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
goto exit;
}
/* Lock list during installation */
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
sci_handler = acpi_gbl_sci_handler_list;
/* Ensure handler does not already exist */
while (sci_handler) {
if (address == sci_handler->address) {
status = AE_ALREADY_EXISTS;
goto unlock_and_exit;
}
sci_handler = sci_handler->next;
}
/* Install the new handler into the global list (at head) */
new_sci_handler->next = acpi_gbl_sci_handler_list;
acpi_gbl_sci_handler_list = new_sci_handler;
unlock_and_exit:
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
exit:
if (ACPI_FAILURE(status)) {
ACPI_FREE(new_sci_handler);
}
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_sci_handler)
/*******************************************************************************
*
* FUNCTION: acpi_remove_sci_handler
*
* PARAMETERS: address - Address of the handler
*
* RETURN: Status
*
* DESCRIPTION: Remove a handler for a System Control Interrupt.
*
******************************************************************************/
acpi_status acpi_remove_sci_handler(acpi_sci_handler address)
{
struct acpi_sci_handler_info *prev_sci_handler;
struct acpi_sci_handler_info *next_sci_handler;
acpi_cpu_flags flags;
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_remove_sci_handler);
if (!address) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Remove the SCI handler with lock */
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
prev_sci_handler = NULL;
next_sci_handler = acpi_gbl_sci_handler_list;
while (next_sci_handler) {
if (next_sci_handler->address == address) {
/* Unlink and free the SCI handler info block */
if (prev_sci_handler) {
prev_sci_handler->next = next_sci_handler->next;
} else {
acpi_gbl_sci_handler_list =
next_sci_handler->next;
}
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
ACPI_FREE(next_sci_handler);
goto unlock_and_exit;
}
prev_sci_handler = next_sci_handler;
next_sci_handler = next_sci_handler->next;
}
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
status = AE_NOT_EXIST;
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_remove_sci_handler)
/*******************************************************************************
*
* FUNCTION: acpi_install_global_event_handler
*
* PARAMETERS: handler - Pointer to the global event handler function
* context - Value passed to the handler on each event
*
* RETURN: Status
*
* DESCRIPTION: Saves the pointer to the handler function. The global handler
* is invoked upon each incoming GPE and Fixed Event. It is
* invoked at interrupt level at the time of the event dispatch.
* Can be used to update event counters, etc.
*
******************************************************************************/
acpi_status
acpi_install_global_event_handler(acpi_gbl_event_handler handler, void *context)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_install_global_event_handler);
/* Parameter validation */
if (!handler) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Don't allow two handlers. */
if (acpi_gbl_global_event_handler) {
status = AE_ALREADY_EXISTS;
goto cleanup;
}
acpi_gbl_global_event_handler = handler;
acpi_gbl_global_event_handler_context = context;
cleanup:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_global_event_handler)
/*******************************************************************************
*
* FUNCTION: acpi_install_fixed_event_handler
*
* PARAMETERS: event - Event type to enable.
* handler - Pointer to the handler function for the
* event
* context - Value passed to the handler on each GPE
*
* RETURN: Status
*
* DESCRIPTION: Saves the pointer to the handler function and then enables the
* event.
*
******************************************************************************/
acpi_status
acpi_install_fixed_event_handler(u32 event,
acpi_event_handler handler, void *context)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_install_fixed_event_handler);
/* Parameter validation */
if (event > ACPI_EVENT_MAX) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Do not allow multiple handlers */
if (acpi_gbl_fixed_event_handlers[event].handler) {
status = AE_ALREADY_EXISTS;
goto cleanup;
}
/* Install the handler before enabling the event */
acpi_gbl_fixed_event_handlers[event].handler = handler;
acpi_gbl_fixed_event_handlers[event].context = context;
status = acpi_clear_event(event);
if (ACPI_SUCCESS(status))
status = acpi_enable_event(event, 0);
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO,
"Could not enable fixed event - %s (%u)",
acpi_ut_get_event_name(event), event));
/* Remove the handler */
acpi_gbl_fixed_event_handlers[event].handler = NULL;
acpi_gbl_fixed_event_handlers[event].context = NULL;
} else {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Enabled fixed event %s (%X), Handler=%p\n",
acpi_ut_get_event_name(event), event,
handler));
}
cleanup:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_fixed_event_handler)
/*******************************************************************************
*
* FUNCTION: acpi_remove_fixed_event_handler
*
* PARAMETERS: event - Event type to disable.
* handler - Address of the handler
*
* RETURN: Status
*
* DESCRIPTION: Disables the event and unregisters the event handler.
*
******************************************************************************/
acpi_status
acpi_remove_fixed_event_handler(u32 event, acpi_event_handler handler)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(acpi_remove_fixed_event_handler);
/* Parameter validation */
if (event > ACPI_EVENT_MAX) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Disable the event before removing the handler */
status = acpi_disable_event(event, 0);
/* Always Remove the handler */
acpi_gbl_fixed_event_handlers[event].handler = NULL;
acpi_gbl_fixed_event_handlers[event].context = NULL;
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO,
"Could not disable fixed event - %s (%u)",
acpi_ut_get_event_name(event), event));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Disabled fixed event - %s (%X)\n",
acpi_ut_get_event_name(event), event));
}
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_remove_fixed_event_handler)
/*******************************************************************************
*
* FUNCTION: acpi_ev_install_gpe_handler
*
* PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT
* defined GPEs)
* gpe_number - The GPE number within the GPE block
* type - Whether this GPE should be treated as an
* edge- or level-triggered interrupt.
* is_raw_handler - Whether this GPE should be handled using
* the special GPE handler mode.
* address - Address of the handler
* context - Value passed to the handler on each GPE
*
* RETURN: Status
*
* DESCRIPTION: Internal function to install a handler for a General Purpose
* Event.
*
******************************************************************************/
static acpi_status
acpi_ev_install_gpe_handler(acpi_handle gpe_device,
u32 gpe_number,
u32 type,
u8 is_raw_handler,
acpi_gpe_handler address, void *context)
{
struct acpi_gpe_event_info *gpe_event_info;
struct acpi_gpe_handler_info *handler;
acpi_status status;
acpi_cpu_flags flags;
ACPI_FUNCTION_TRACE(ev_install_gpe_handler);
/* Parameter validation */
if ((!address) || (type & ~ACPI_GPE_XRUPT_TYPE_MASK)) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Allocate and init handler object (before lock) */
handler = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_handler_info));
if (!handler) {
status = AE_NO_MEMORY;
goto unlock_and_exit;
}
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
/* Ensure that we have a valid GPE number */
gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
if (!gpe_event_info) {
status = AE_BAD_PARAMETER;
goto free_and_exit;
}
/* Make sure that there isn't a handler there already */
if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
ACPI_GPE_DISPATCH_HANDLER) ||
(ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
ACPI_GPE_DISPATCH_RAW_HANDLER)) {
status = AE_ALREADY_EXISTS;
goto free_and_exit;
}
handler->address = address;
handler->context = context;
handler->method_node = gpe_event_info->dispatch.method_node;
handler->original_flags = (u8)(gpe_event_info->flags &
(ACPI_GPE_XRUPT_TYPE_MASK |
ACPI_GPE_DISPATCH_MASK));
/*
* If the GPE is associated with a method, it may have been enabled
* automatically during initialization, in which case it has to be
* disabled now to avoid spurious execution of the handler.
*/
if (((ACPI_GPE_DISPATCH_TYPE(handler->original_flags) ==
ACPI_GPE_DISPATCH_METHOD) ||
(ACPI_GPE_DISPATCH_TYPE(handler->original_flags) ==
ACPI_GPE_DISPATCH_NOTIFY)) && gpe_event_info->runtime_count) {
handler->originally_enabled = TRUE;
(void)acpi_ev_remove_gpe_reference(gpe_event_info);
/* Sanity check of original type against new type */
if (type !=
(u32)(gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK)) {
ACPI_WARNING((AE_INFO,
"GPE type mismatch (level/edge)"));
}
}
/* Install the handler */
gpe_event_info->dispatch.handler = handler;
/* Setup up dispatch flags to indicate handler (vs. method/notify) */
gpe_event_info->flags &=
~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
gpe_event_info->flags |=
(u8)(type |
(is_raw_handler ? ACPI_GPE_DISPATCH_RAW_HANDLER :
ACPI_GPE_DISPATCH_HANDLER));
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
free_and_exit:
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
ACPI_FREE(handler);
goto unlock_and_exit;
}
/*******************************************************************************
*
* FUNCTION: acpi_install_gpe_handler
*
* PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT
* defined GPEs)
* gpe_number - The GPE number within the GPE block
* type - Whether this GPE should be treated as an
* edge- or level-triggered interrupt.
* address - Address of the handler
* context - Value passed to the handler on each GPE
*
* RETURN: Status
*
* DESCRIPTION: Install a handler for a General Purpose Event.
*
******************************************************************************/
acpi_status
acpi_install_gpe_handler(acpi_handle gpe_device,
u32 gpe_number,
u32 type, acpi_gpe_handler address, void *context)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_install_gpe_handler);
status = acpi_ev_install_gpe_handler(gpe_device, gpe_number, type,
FALSE, address, context);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_gpe_handler)
/*******************************************************************************
*
* FUNCTION: acpi_install_gpe_raw_handler
*
* PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT
* defined GPEs)
* gpe_number - The GPE number within the GPE block
* type - Whether this GPE should be treated as an
* edge- or level-triggered interrupt.
* address - Address of the handler
* context - Value passed to the handler on each GPE
*
* RETURN: Status
*
* DESCRIPTION: Install a handler for a General Purpose Event.
*
******************************************************************************/
acpi_status
acpi_install_gpe_raw_handler(acpi_handle gpe_device,
u32 gpe_number,
u32 type, acpi_gpe_handler address, void *context)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_install_gpe_raw_handler);
status = acpi_ev_install_gpe_handler(gpe_device, gpe_number, type,
TRUE, address, context);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_install_gpe_raw_handler)
/*******************************************************************************
*
* FUNCTION: acpi_remove_gpe_handler
*
* PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT
* defined GPEs)
* gpe_number - The event to remove a handler
* address - Address of the handler
*
* RETURN: Status
*
* DESCRIPTION: Remove a handler for a General Purpose acpi_event.
*
******************************************************************************/
acpi_status
acpi_remove_gpe_handler(acpi_handle gpe_device,
u32 gpe_number, acpi_gpe_handler address)
{
struct acpi_gpe_event_info *gpe_event_info;
struct acpi_gpe_handler_info *handler;
acpi_status status;
acpi_cpu_flags flags;
ACPI_FUNCTION_TRACE(acpi_remove_gpe_handler);
/* Parameter validation */
if (!address) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
/* Ensure that we have a valid GPE number */
gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
if (!gpe_event_info) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
/* Make sure that a handler is indeed installed */
if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) !=
ACPI_GPE_DISPATCH_HANDLER) &&
(ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) !=
ACPI_GPE_DISPATCH_RAW_HANDLER)) {
status = AE_NOT_EXIST;
goto unlock_and_exit;
}
/* Make sure that the installed handler is the same */
if (gpe_event_info->dispatch.handler->address != address) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
/* Remove the handler */
handler = gpe_event_info->dispatch.handler;
gpe_event_info->dispatch.handler = NULL;
/* Restore Method node (if any), set dispatch flags */
gpe_event_info->dispatch.method_node = handler->method_node;
gpe_event_info->flags &=
~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
gpe_event_info->flags |= handler->original_flags;
/*
* If the GPE was previously associated with a method and it was
* enabled, it should be enabled at this point to restore the
* post-initialization configuration.
*/
if (((ACPI_GPE_DISPATCH_TYPE(handler->original_flags) ==
ACPI_GPE_DISPATCH_METHOD) ||
(ACPI_GPE_DISPATCH_TYPE(handler->original_flags) ==
ACPI_GPE_DISPATCH_NOTIFY)) && handler->originally_enabled) {
(void)acpi_ev_add_gpe_reference(gpe_event_info, FALSE);
if (ACPI_GPE_IS_POLLING_NEEDED(gpe_event_info)) {
/* Poll edge triggered GPEs to handle existing events */
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
(void)acpi_ev_detect_gpe(gpe_device, gpe_event_info,
gpe_number);
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
}
}
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
/* Make sure all deferred GPE tasks are completed */
acpi_os_wait_events_complete();
/* Now we can free the handler object */
ACPI_FREE(handler);
return_ACPI_STATUS(status);
unlock_and_exit:
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_remove_gpe_handler)
/*******************************************************************************
*
* FUNCTION: acpi_acquire_global_lock
*
* PARAMETERS: timeout - How long the caller is willing to wait
* handle - Where the handle to the lock is returned
* (if acquired)
*
* RETURN: Status
*
* DESCRIPTION: Acquire the ACPI Global Lock
*
* Note: Allows callers with the same thread ID to acquire the global lock
* multiple times. In other words, externally, the behavior of the global lock
* is identical to an AML mutex. On the first acquire, a new handle is
* returned. On any subsequent calls to acquire by the same thread, the same
* handle is returned.
*
******************************************************************************/
acpi_status acpi_acquire_global_lock(u16 timeout, u32 *handle)
{
acpi_status status;
if (!handle) {
return (AE_BAD_PARAMETER);
}
/* Must lock interpreter to prevent race conditions */
acpi_ex_enter_interpreter();
status = acpi_ex_acquire_mutex_object(timeout,
acpi_gbl_global_lock_mutex,
acpi_os_get_thread_id());
if (ACPI_SUCCESS(status)) {
/* Return the global lock handle (updated in acpi_ev_acquire_global_lock) */
*handle = acpi_gbl_global_lock_handle;
}
acpi_ex_exit_interpreter();
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_acquire_global_lock)
/*******************************************************************************
*
* FUNCTION: acpi_release_global_lock
*
* PARAMETERS: handle - Returned from acpi_acquire_global_lock
*
* RETURN: Status
*
* DESCRIPTION: Release the ACPI Global Lock. The handle must be valid.
*
******************************************************************************/
acpi_status acpi_release_global_lock(u32 handle)
{
acpi_status status;
if (!handle || (handle != acpi_gbl_global_lock_handle)) {
return (AE_NOT_ACQUIRED);
}
status = acpi_ex_release_mutex_object(acpi_gbl_global_lock_mutex);
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_release_global_lock)
#endif /* !ACPI_REDUCED_HARDWARE */
| linux-master | drivers/acpi/acpica/evxface.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: evregion - Operation Region support
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acevents.h"
#include "acnamesp.h"
#include "acinterp.h"
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evregion")
extern u8 acpi_gbl_default_address_spaces[];
/* Local prototypes */
static void
acpi_ev_execute_orphan_reg_method(struct acpi_namespace_node *device_node,
acpi_adr_space_type space_id);
static acpi_status
acpi_ev_reg_run(acpi_handle obj_handle,
u32 level, void *context, void **return_value);
/*******************************************************************************
*
* FUNCTION: acpi_ev_initialize_op_regions
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Execute _REG methods for all Operation Regions that have
* an installed default region handler.
*
******************************************************************************/
acpi_status acpi_ev_initialize_op_regions(void)
{
acpi_status status;
u32 i;
ACPI_FUNCTION_TRACE(ev_initialize_op_regions);
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Run the _REG methods for op_regions in each default address space */
for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) {
/*
* Make sure the installed handler is the DEFAULT handler. If not the
* default, the _REG methods will have already been run (when the
* handler was installed)
*/
if (acpi_ev_has_default_handler(acpi_gbl_root_node,
acpi_gbl_default_address_spaces
[i])) {
acpi_ev_execute_reg_methods(acpi_gbl_root_node,
acpi_gbl_default_address_spaces
[i], ACPI_REG_CONNECT);
}
}
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_address_space_dispatch
*
* PARAMETERS: region_obj - Internal region object
* field_obj - Corresponding field. Can be NULL.
* function - Read or Write operation
* region_offset - Where in the region to read or write
* bit_width - Field width in bits (8, 16, 32, or 64)
* value - Pointer to in or out value, must be
* a full 64-bit integer
*
* RETURN: Status
*
* DESCRIPTION: Dispatch an address space or operation region access to
* a previously installed handler.
*
* NOTE: During early initialization, we always install the default region
* handlers for Memory, I/O and PCI_Config. This ensures that these operation
* region address spaces are always available as per the ACPI specification.
* This is especially needed in order to support the execution of
* module-level AML code during loading of the ACPI tables.
*
******************************************************************************/
acpi_status
acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
union acpi_operand_object *field_obj,
u32 function,
u32 region_offset, u32 bit_width, u64 *value)
{
acpi_status status;
acpi_adr_space_handler handler;
acpi_adr_space_setup region_setup;
union acpi_operand_object *handler_desc;
union acpi_operand_object *region_obj2;
void *region_context = NULL;
struct acpi_connection_info *context;
acpi_mutex context_mutex;
u8 context_locked;
acpi_physical_address address;
ACPI_FUNCTION_TRACE(ev_address_space_dispatch);
region_obj2 = acpi_ns_get_secondary_object(region_obj);
if (!region_obj2) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
/* Ensure that there is a handler associated with this region */
handler_desc = region_obj->region.handler;
if (!handler_desc) {
ACPI_ERROR((AE_INFO,
"No handler for Region [%4.4s] (%p) [%s]",
acpi_ut_get_node_name(region_obj->region.node),
region_obj,
acpi_ut_get_region_name(region_obj->region.
space_id)));
return_ACPI_STATUS(AE_NOT_EXIST);
}
context = handler_desc->address_space.context;
context_mutex = handler_desc->address_space.context_mutex;
context_locked = FALSE;
/*
* It may be the case that the region has never been initialized.
* Some types of regions require special init code
*/
if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
/* This region has not been initialized yet, do it */
region_setup = handler_desc->address_space.setup;
if (!region_setup) {
/* No initialization routine, exit with error */
ACPI_ERROR((AE_INFO,
"No init routine for region(%p) [%s]",
region_obj,
acpi_ut_get_region_name(region_obj->region.
space_id)));
return_ACPI_STATUS(AE_NOT_EXIST);
}
if (region_obj->region.space_id == ACPI_ADR_SPACE_PLATFORM_COMM) {
struct acpi_pcc_info *ctx =
handler_desc->address_space.context;
ctx->internal_buffer =
field_obj->field.internal_pcc_buffer;
ctx->length = (u16)region_obj->region.length;
ctx->subspace_id = (u8)region_obj->region.address;
}
if (region_obj->region.space_id ==
ACPI_ADR_SPACE_FIXED_HARDWARE) {
struct acpi_ffh_info *ctx =
handler_desc->address_space.context;
ctx->length = region_obj->region.length;
ctx->offset = region_obj->region.address;
}
/*
* We must exit the interpreter because the region setup will
* potentially execute control methods (for example, the _REG method
* for this region)
*/
acpi_ex_exit_interpreter();
status = region_setup(region_obj, ACPI_REGION_ACTIVATE,
context, ®ion_context);
/* Re-enter the interpreter */
acpi_ex_enter_interpreter();
/* Check for failure of the Region Setup */
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"During region initialization: [%s]",
acpi_ut_get_region_name(region_obj->
region.
space_id)));
return_ACPI_STATUS(status);
}
/* Region initialization may have been completed by region_setup */
if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
region_obj->region.flags |= AOPOBJ_SETUP_COMPLETE;
/*
* Save the returned context for use in all accesses to
* the handler for this particular region
*/
if (!(region_obj2->extra.region_context)) {
region_obj2->extra.region_context =
region_context;
}
}
}
/* We have everything we need, we can invoke the address space handler */
handler = handler_desc->address_space.handler;
address = (region_obj->region.address + region_offset);
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Handler %p (@%p) Address %8.8X%8.8X [%s]\n",
®ion_obj->region.handler->address_space, handler,
ACPI_FORMAT_UINT64(address),
acpi_ut_get_region_name(region_obj->region.
space_id)));
if (!(handler_desc->address_space.handler_flags &
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
/*
* For handlers other than the default (supplied) handlers, we must
* exit the interpreter because the handler *might* block -- we don't
* know what it will do, so we can't hold the lock on the interpreter.
*/
acpi_ex_exit_interpreter();
}
/*
* Special handling for generic_serial_bus and general_purpose_io:
* There are three extra parameters that must be passed to the
* handler via the context:
* 1) Connection buffer, a resource template from Connection() op
* 2) Length of the above buffer
* 3) Actual access length from the access_as() op
*
* Since we pass these extra parameters via the context, which is
* shared between threads, we must lock the context to avoid these
* parameters being changed from another thread before the handler
* has completed running.
*
* In addition, for general_purpose_io, the Address and bit_width fields
* are defined as follows:
* 1) Address is the pin number index of the field (bit offset from
* the previous Connection)
* 2) bit_width is the actual bit length of the field (number of pins)
*/
if ((region_obj->region.space_id == ACPI_ADR_SPACE_GSBUS ||
region_obj->region.space_id == ACPI_ADR_SPACE_GPIO) &&
context && field_obj) {
status =
acpi_os_acquire_mutex(context_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
goto re_enter_interpreter;
}
context_locked = TRUE;
/* Get the Connection (resource_template) buffer */
context->connection = field_obj->field.resource_buffer;
context->length = field_obj->field.resource_length;
context->access_length = field_obj->field.access_length;
if (region_obj->region.space_id == ACPI_ADR_SPACE_GPIO) {
address = field_obj->field.pin_number_index;
bit_width = field_obj->field.bit_length;
}
}
/* Call the handler */
status = handler(function, address, bit_width, value, context,
region_obj2->extra.region_context);
if (context_locked) {
acpi_os_release_mutex(context_mutex);
}
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Returned by Handler for [%s]",
acpi_ut_get_region_name(region_obj->region.
space_id)));
/*
* Special case for an EC timeout. These are seen so frequently
* that an additional error message is helpful
*/
if ((region_obj->region.space_id == ACPI_ADR_SPACE_EC) &&
(status == AE_TIME)) {
ACPI_ERROR((AE_INFO,
"Timeout from EC hardware or EC device driver"));
}
}
re_enter_interpreter:
if (!(handler_desc->address_space.handler_flags &
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
/*
* We just returned from a non-default handler, we must re-enter the
* interpreter
*/
acpi_ex_enter_interpreter();
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_detach_region
*
* PARAMETERS: region_obj - Region Object
* acpi_ns_is_locked - Namespace Region Already Locked?
*
* RETURN: None
*
* DESCRIPTION: Break the association between the handler and the region
* this is a two way association.
*
******************************************************************************/
void
acpi_ev_detach_region(union acpi_operand_object *region_obj,
u8 acpi_ns_is_locked)
{
union acpi_operand_object *handler_obj;
union acpi_operand_object *obj_desc;
union acpi_operand_object *start_desc;
union acpi_operand_object **last_obj_ptr;
acpi_adr_space_setup region_setup;
void **region_context;
union acpi_operand_object *region_obj2;
acpi_status status;
ACPI_FUNCTION_TRACE(ev_detach_region);
region_obj2 = acpi_ns_get_secondary_object(region_obj);
if (!region_obj2) {
return_VOID;
}
region_context = ®ion_obj2->extra.region_context;
/* Get the address handler from the region object */
handler_obj = region_obj->region.handler;
if (!handler_obj) {
/* This region has no handler, all done */
return_VOID;
}
/* Find this region in the handler's list */
obj_desc = handler_obj->address_space.region_list;
start_desc = obj_desc;
last_obj_ptr = &handler_obj->address_space.region_list;
while (obj_desc) {
/* Is this the correct Region? */
if (obj_desc == region_obj) {
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Removing Region %p from address handler %p\n",
region_obj, handler_obj));
/* This is it, remove it from the handler's list */
*last_obj_ptr = obj_desc->region.next;
obj_desc->region.next = NULL; /* Must clear field */
if (acpi_ns_is_locked) {
status =
acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_VOID;
}
}
/* Now stop region accesses by executing the _REG method */
status =
acpi_ev_execute_reg_method(region_obj,
ACPI_REG_DISCONNECT);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"from region _REG, [%s]",
acpi_ut_get_region_name
(region_obj->region.space_id)));
}
if (acpi_ns_is_locked) {
status =
acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_VOID;
}
}
/*
* If the region has been activated, call the setup handler with
* the deactivate notification
*/
if (region_obj->region.flags & AOPOBJ_SETUP_COMPLETE) {
region_setup = handler_obj->address_space.setup;
status =
region_setup(region_obj,
ACPI_REGION_DEACTIVATE,
handler_obj->address_space.
context, region_context);
/*
* region_context should have been released by the deactivate
* operation. We don't need access to it anymore here.
*/
if (region_context) {
*region_context = NULL;
}
/* Init routine may fail, Just ignore errors */
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"from region handler - deactivate, [%s]",
acpi_ut_get_region_name
(region_obj->region.
space_id)));
}
region_obj->region.flags &=
~(AOPOBJ_SETUP_COMPLETE);
}
/*
* Remove handler reference in the region
*
* NOTE: this doesn't mean that the region goes away, the region
* is just inaccessible as indicated to the _REG method
*
* If the region is on the handler's list, this must be the
* region's handler
*/
region_obj->region.handler = NULL;
acpi_ut_remove_reference(handler_obj);
return_VOID;
}
/* Walk the linked list of handlers */
last_obj_ptr = &obj_desc->region.next;
obj_desc = obj_desc->region.next;
/* Prevent infinite loop if list is corrupted */
if (obj_desc == start_desc) {
ACPI_ERROR((AE_INFO,
"Circular handler list in region object %p",
region_obj));
return_VOID;
}
}
/* If we get here, the region was not in the handler's region list */
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Cannot remove region %p from address handler %p\n",
region_obj, handler_obj));
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_attach_region
*
* PARAMETERS: handler_obj - Handler Object
* region_obj - Region Object
* acpi_ns_is_locked - Namespace Region Already Locked?
*
* RETURN: None
*
* DESCRIPTION: Create the association between the handler and the region
* this is a two way association.
*
******************************************************************************/
acpi_status
acpi_ev_attach_region(union acpi_operand_object *handler_obj,
union acpi_operand_object *region_obj,
u8 acpi_ns_is_locked)
{
ACPI_FUNCTION_TRACE(ev_attach_region);
/* Install the region's handler */
if (region_obj->region.handler) {
return_ACPI_STATUS(AE_ALREADY_EXISTS);
}
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Adding Region [%4.4s] %p to address handler %p [%s]\n",
acpi_ut_get_node_name(region_obj->region.node),
region_obj, handler_obj,
acpi_ut_get_region_name(region_obj->region.
space_id)));
/* Link this region to the front of the handler's list */
region_obj->region.next = handler_obj->address_space.region_list;
handler_obj->address_space.region_list = region_obj;
region_obj->region.handler = handler_obj;
acpi_ut_add_reference(handler_obj);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_execute_reg_method
*
* PARAMETERS: region_obj - Region object
* function - Passed to _REG: On (1) or Off (0)
*
* RETURN: Status
*
* DESCRIPTION: Execute _REG method for a region
*
******************************************************************************/
acpi_status
acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function)
{
struct acpi_evaluate_info *info;
union acpi_operand_object *args[3];
union acpi_operand_object *region_obj2;
const acpi_name *reg_name_ptr =
ACPI_CAST_PTR(acpi_name, METHOD_NAME__REG);
struct acpi_namespace_node *method_node;
struct acpi_namespace_node *node;
acpi_status status;
ACPI_FUNCTION_TRACE(ev_execute_reg_method);
if (!acpi_gbl_namespace_initialized ||
region_obj->region.handler == NULL) {
return_ACPI_STATUS(AE_OK);
}
region_obj2 = acpi_ns_get_secondary_object(region_obj);
if (!region_obj2) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
/*
* Find any "_REG" method associated with this region definition.
* The method should always be updated as this function may be
* invoked after a namespace change.
*/
node = region_obj->region.node->parent;
status =
acpi_ns_search_one_scope(*reg_name_ptr, node, ACPI_TYPE_METHOD,
&method_node);
if (ACPI_SUCCESS(status)) {
/*
* The _REG method is optional and there can be only one per
* region definition. This will be executed when the handler is
* attached or removed.
*/
region_obj2->extra.method_REG = method_node;
}
if (region_obj2->extra.method_REG == NULL) {
return_ACPI_STATUS(AE_OK);
}
/* _REG(DISCONNECT) should be paired with _REG(CONNECT) */
if ((function == ACPI_REG_CONNECT &&
region_obj->common.flags & AOPOBJ_REG_CONNECTED) ||
(function == ACPI_REG_DISCONNECT &&
!(region_obj->common.flags & AOPOBJ_REG_CONNECTED))) {
return_ACPI_STATUS(AE_OK);
}
/* Allocate and initialize the evaluation information block */
info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
if (!info) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
info->prefix_node = region_obj2->extra.method_REG;
info->relative_pathname = NULL;
info->parameters = args;
info->flags = ACPI_IGNORE_RETURN_VALUE;
/*
* The _REG method has two arguments:
*
* arg0 - Integer:
* Operation region space ID Same value as region_obj->Region.space_id
*
* arg1 - Integer:
* connection status 1 for connecting the handler, 0 for disconnecting
* the handler (Passed as a parameter)
*/
args[0] =
acpi_ut_create_integer_object((u64)region_obj->region.space_id);
if (!args[0]) {
status = AE_NO_MEMORY;
goto cleanup1;
}
args[1] = acpi_ut_create_integer_object((u64)function);
if (!args[1]) {
status = AE_NO_MEMORY;
goto cleanup2;
}
args[2] = NULL; /* Terminate list */
/* Execute the method, no return value */
ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
(ACPI_TYPE_METHOD, info->prefix_node, NULL));
status = acpi_ns_evaluate(info);
acpi_ut_remove_reference(args[1]);
if (ACPI_FAILURE(status)) {
goto cleanup2;
}
if (function == ACPI_REG_CONNECT) {
region_obj->common.flags |= AOPOBJ_REG_CONNECTED;
} else {
region_obj->common.flags &= ~AOPOBJ_REG_CONNECTED;
}
cleanup2:
acpi_ut_remove_reference(args[0]);
cleanup1:
ACPI_FREE(info);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_execute_reg_methods
*
* PARAMETERS: node - Namespace node for the device
* space_id - The address space ID
* function - Passed to _REG: On (1) or Off (0)
*
* RETURN: None
*
* DESCRIPTION: Run all _REG methods for the input Space ID;
* Note: assumes namespace is locked, or system init time.
*
******************************************************************************/
void
acpi_ev_execute_reg_methods(struct acpi_namespace_node *node,
acpi_adr_space_type space_id, u32 function)
{
struct acpi_reg_walk_info info;
ACPI_FUNCTION_TRACE(ev_execute_reg_methods);
/*
* These address spaces do not need a call to _REG, since the ACPI
* specification defines them as: "must always be accessible". Since
* they never change state (never become unavailable), no need to ever
* call _REG on them. Also, a data_table is not a "real" address space,
* so do not call _REG. September 2018.
*/
if ((space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) ||
(space_id == ACPI_ADR_SPACE_SYSTEM_IO) ||
(space_id == ACPI_ADR_SPACE_DATA_TABLE)) {
return_VOID;
}
info.space_id = space_id;
info.function = function;
info.reg_run_count = 0;
ACPI_DEBUG_PRINT_RAW((ACPI_DB_NAMES,
" Running _REG methods for SpaceId %s\n",
acpi_ut_get_region_name(info.space_id)));
/*
* Run all _REG methods for all Operation Regions for this space ID. This
* is a separate walk in order to handle any interdependencies between
* regions and _REG methods. (i.e. handlers must be installed for all
* regions of this Space ID before we can run any _REG methods)
*/
(void)acpi_ns_walk_namespace(ACPI_TYPE_ANY, node, ACPI_UINT32_MAX,
ACPI_NS_WALK_UNLOCK, acpi_ev_reg_run, NULL,
&info, NULL);
/*
* Special case for EC and GPIO: handle "orphan" _REG methods with
* no region.
*/
if (space_id == ACPI_ADR_SPACE_EC || space_id == ACPI_ADR_SPACE_GPIO) {
acpi_ev_execute_orphan_reg_method(node, space_id);
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_NAMES,
" Executed %u _REG methods for SpaceId %s\n",
info.reg_run_count,
acpi_ut_get_region_name(info.space_id)));
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_reg_run
*
* PARAMETERS: walk_namespace callback
*
* DESCRIPTION: Run _REG method for region objects of the requested spaceID
*
******************************************************************************/
static acpi_status
acpi_ev_reg_run(acpi_handle obj_handle,
u32 level, void *context, void **return_value)
{
union acpi_operand_object *obj_desc;
struct acpi_namespace_node *node;
acpi_status status;
struct acpi_reg_walk_info *info;
info = ACPI_CAST_PTR(struct acpi_reg_walk_info, context);
/* Convert and validate the device handle */
node = acpi_ns_validate_handle(obj_handle);
if (!node) {
return (AE_BAD_PARAMETER);
}
/*
* We only care about regions and objects that are allowed to have
* address space handlers
*/
if ((node->type != ACPI_TYPE_REGION) && (node != acpi_gbl_root_node)) {
return (AE_OK);
}
/* Check for an existing internal object */
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
/* No object, just exit */
return (AE_OK);
}
/* Object is a Region */
if (obj_desc->region.space_id != info->space_id) {
/* This region is for a different address space, just ignore it */
return (AE_OK);
}
info->reg_run_count++;
status = acpi_ev_execute_reg_method(obj_desc, info->function);
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ev_execute_orphan_reg_method
*
* PARAMETERS: device_node - Namespace node for an ACPI device
* space_id - The address space ID
*
* RETURN: None
*
* DESCRIPTION: Execute an "orphan" _REG method that appears under an ACPI
* device. This is a _REG method that has no corresponding region
* within the device's scope. ACPI tables depending on these
* "orphan" _REG methods have been seen for both EC and GPIO
* Operation Regions. Presumably the Windows ACPI implementation
* always calls the _REG method independent of the presence of
* an actual Operation Region with the correct address space ID.
*
* MUTEX: Assumes the namespace is locked
*
******************************************************************************/
static void
acpi_ev_execute_orphan_reg_method(struct acpi_namespace_node *device_node,
acpi_adr_space_type space_id)
{
acpi_handle reg_method;
struct acpi_namespace_node *next_node;
acpi_status status;
struct acpi_object_list args;
union acpi_object objects[2];
ACPI_FUNCTION_TRACE(ev_execute_orphan_reg_method);
if (!device_node) {
return_VOID;
}
/* Namespace is currently locked, must release */
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
/* Get a handle to a _REG method immediately under the EC device */
status = acpi_get_handle(device_node, METHOD_NAME__REG, ®_method);
if (ACPI_FAILURE(status)) {
goto exit; /* There is no _REG method present */
}
/*
* Execute the _REG method only if there is no Operation Region in
* this scope with the Embedded Controller space ID. Otherwise, it
* will already have been executed. Note, this allows for Regions
* with other space IDs to be present; but the code below will then
* execute the _REG method with the embedded_control space_ID argument.
*/
next_node = acpi_ns_get_next_node(device_node, NULL);
while (next_node) {
if ((next_node->type == ACPI_TYPE_REGION) &&
(next_node->object) &&
(next_node->object->region.space_id == space_id)) {
goto exit; /* Do not execute the _REG */
}
next_node = acpi_ns_get_next_node(device_node, next_node);
}
/* Evaluate the _REG(space_id,Connect) method */
args.count = 2;
args.pointer = objects;
objects[0].type = ACPI_TYPE_INTEGER;
objects[0].integer.value = space_id;
objects[1].type = ACPI_TYPE_INTEGER;
objects[1].integer.value = ACPI_REG_CONNECT;
(void)acpi_evaluate_object(reg_method, NULL, &args, NULL);
exit:
/* We ignore all errors from above, don't care */
(void)acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
return_VOID;
}
| linux-master | drivers/acpi/acpica/evregion.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: rsdumpinfo - Tables used to display resource descriptors.
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acresrc.h"
#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME("rsdumpinfo")
#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DISASSEMBLER) || defined(ACPI_DEBUGGER)
#define ACPI_RSD_OFFSET(f) (u8) ACPI_OFFSET (union acpi_resource_data,f)
#define ACPI_PRT_OFFSET(f) (u8) ACPI_OFFSET (struct acpi_pci_routing_table,f)
#define ACPI_RSD_TABLE_SIZE(name) (sizeof(name) / sizeof (struct acpi_rsdump_info))
/*******************************************************************************
*
* Resource Descriptor info tables
*
* Note: The first table entry must be a Title or Literal and must contain
* the table length (number of table entries)
*
******************************************************************************/
struct acpi_rsdump_info acpi_rs_dump_irq[7] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_irq), "IRQ", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(irq.descriptor_length),
"Descriptor Length", NULL},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(irq.triggering), "Triggering",
acpi_gbl_he_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(irq.polarity), "Polarity",
acpi_gbl_ll_decode},
{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(irq.shareable), "Sharing",
acpi_gbl_shr_decode},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(irq.interrupt_count),
"Interrupt Count", NULL},
{ACPI_RSD_SHORTLIST, ACPI_RSD_OFFSET(irq.interrupts[0]),
"Interrupt List", NULL}
};
struct acpi_rsdump_info acpi_rs_dump_dma[6] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_dma), "DMA", NULL},
{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(dma.type), "Speed",
acpi_gbl_typ_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(dma.bus_master), "Mastering",
acpi_gbl_bm_decode},
{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(dma.transfer), "Transfer Type",
acpi_gbl_siz_decode},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(dma.channel_count), "Channel Count",
NULL},
{ACPI_RSD_SHORTLIST, ACPI_RSD_OFFSET(dma.channels[0]), "Channel List",
NULL}
};
struct acpi_rsdump_info acpi_rs_dump_start_dpf[4] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_start_dpf),
"Start-Dependent-Functions", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(start_dpf.descriptor_length),
"Descriptor Length", NULL},
{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(start_dpf.compatibility_priority),
"Compatibility Priority", acpi_gbl_config_decode},
{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(start_dpf.performance_robustness),
"Performance/Robustness", acpi_gbl_config_decode}
};
struct acpi_rsdump_info acpi_rs_dump_end_dpf[1] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_end_dpf),
"End-Dependent-Functions", NULL}
};
struct acpi_rsdump_info acpi_rs_dump_io[6] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_io), "I/O", NULL},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(io.io_decode), "Address Decoding",
acpi_gbl_io_decode},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(io.minimum), "Address Minimum", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(io.maximum), "Address Maximum", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(io.alignment), "Alignment", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(io.address_length), "Address Length",
NULL}
};
struct acpi_rsdump_info acpi_rs_dump_fixed_io[3] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_fixed_io),
"Fixed I/O", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(fixed_io.address), "Address", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(fixed_io.address_length),
"Address Length", NULL}
};
struct acpi_rsdump_info acpi_rs_dump_vendor[3] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_vendor),
"Vendor Specific", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(vendor.byte_length), "Length", NULL},
{ACPI_RSD_LONGLIST, ACPI_RSD_OFFSET(vendor.byte_data[0]), "Vendor Data",
NULL}
};
struct acpi_rsdump_info acpi_rs_dump_end_tag[1] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_end_tag), "EndTag",
NULL}
};
struct acpi_rsdump_info acpi_rs_dump_memory24[6] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_memory24),
"24-Bit Memory Range", NULL},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(memory24.write_protect),
"Write Protect", acpi_gbl_rw_decode},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(memory24.minimum), "Address Minimum",
NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(memory24.maximum), "Address Maximum",
NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(memory24.alignment), "Alignment",
NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(memory24.address_length),
"Address Length", NULL}
};
struct acpi_rsdump_info acpi_rs_dump_memory32[6] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_memory32),
"32-Bit Memory Range", NULL},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(memory32.write_protect),
"Write Protect", acpi_gbl_rw_decode},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(memory32.minimum), "Address Minimum",
NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(memory32.maximum), "Address Maximum",
NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(memory32.alignment), "Alignment",
NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(memory32.address_length),
"Address Length", NULL}
};
struct acpi_rsdump_info acpi_rs_dump_fixed_memory32[4] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_fixed_memory32),
"32-Bit Fixed Memory Range", NULL},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(fixed_memory32.write_protect),
"Write Protect", acpi_gbl_rw_decode},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(fixed_memory32.address), "Address",
NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(fixed_memory32.address_length),
"Address Length", NULL}
};
struct acpi_rsdump_info acpi_rs_dump_address16[8] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_address16),
"16-Bit WORD Address Space", NULL},
{ACPI_RSD_ADDRESS, 0, NULL, NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.address.granularity),
"Granularity", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.address.minimum),
"Address Minimum", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.address.maximum),
"Address Maximum", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.address.translation_offset),
"Translation Offset", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.address.address_length),
"Address Length", NULL},
{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(address16.resource_source), NULL, NULL}
};
struct acpi_rsdump_info acpi_rs_dump_address32[8] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_address32),
"32-Bit DWORD Address Space", NULL},
{ACPI_RSD_ADDRESS, 0, NULL, NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.address.granularity),
"Granularity", NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.address.minimum),
"Address Minimum", NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.address.maximum),
"Address Maximum", NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.address.translation_offset),
"Translation Offset", NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.address.address_length),
"Address Length", NULL},
{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(address32.resource_source), NULL, NULL}
};
struct acpi_rsdump_info acpi_rs_dump_address64[8] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_address64),
"64-Bit QWORD Address Space", NULL},
{ACPI_RSD_ADDRESS, 0, NULL, NULL},
{ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.address.granularity),
"Granularity", NULL},
{ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.address.minimum),
"Address Minimum", NULL},
{ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.address.maximum),
"Address Maximum", NULL},
{ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.address.translation_offset),
"Translation Offset", NULL},
{ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.address.address_length),
"Address Length", NULL},
{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(address64.resource_source), NULL, NULL}
};
struct acpi_rsdump_info acpi_rs_dump_ext_address64[8] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_ext_address64),
"64-Bit Extended Address Space", NULL},
{ACPI_RSD_ADDRESS, 0, NULL, NULL},
{ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.address.granularity),
"Granularity", NULL},
{ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.address.minimum),
"Address Minimum", NULL},
{ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.address.maximum),
"Address Maximum", NULL},
{ACPI_RSD_UINT64,
ACPI_RSD_OFFSET(ext_address64.address.translation_offset),
"Translation Offset", NULL},
{ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.address.address_length),
"Address Length", NULL},
{ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.type_specific),
"Type-Specific Attribute", NULL}
};
struct acpi_rsdump_info acpi_rs_dump_ext_irq[8] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_ext_irq),
"Extended IRQ", NULL},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(extended_irq.producer_consumer),
"Type", acpi_gbl_consume_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(extended_irq.triggering),
"Triggering", acpi_gbl_he_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(extended_irq.polarity), "Polarity",
acpi_gbl_ll_decode},
{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(extended_irq.shareable), "Sharing",
acpi_gbl_shr_decode},
{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(extended_irq.resource_source), NULL,
NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(extended_irq.interrupt_count),
"Interrupt Count", NULL},
{ACPI_RSD_DWORDLIST, ACPI_RSD_OFFSET(extended_irq.interrupts[0]),
"Interrupt List", NULL}
};
struct acpi_rsdump_info acpi_rs_dump_generic_reg[6] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_generic_reg),
"Generic Register", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(generic_reg.space_id), "Space ID",
NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(generic_reg.bit_width), "Bit Width",
NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(generic_reg.bit_offset), "Bit Offset",
NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(generic_reg.access_size),
"Access Size", NULL},
{ACPI_RSD_UINT64, ACPI_RSD_OFFSET(generic_reg.address), "Address", NULL}
};
struct acpi_rsdump_info acpi_rs_dump_gpio[16] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_gpio), "GPIO", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(gpio.revision_id), "RevisionId", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(gpio.connection_type),
"ConnectionType", acpi_gbl_ct_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(gpio.producer_consumer),
"ProducerConsumer", acpi_gbl_consume_decode},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(gpio.pin_config), "PinConfig",
acpi_gbl_ppc_decode},
{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(gpio.shareable), "Sharing",
acpi_gbl_shr_decode},
{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(gpio.io_restriction),
"IoRestriction", acpi_gbl_ior_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(gpio.triggering), "Triggering",
acpi_gbl_he_decode},
{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(gpio.polarity), "Polarity",
acpi_gbl_ll_decode},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(gpio.drive_strength), "DriveStrength",
NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(gpio.debounce_timeout),
"DebounceTimeout", NULL},
{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(gpio.resource_source),
"ResourceSource", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(gpio.pin_table_length),
"PinTableLength", NULL},
{ACPI_RSD_WORDLIST, ACPI_RSD_OFFSET(gpio.pin_table), "PinTable", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(gpio.vendor_length), "VendorLength",
NULL},
{ACPI_RSD_SHORTLISTX, ACPI_RSD_OFFSET(gpio.vendor_data), "VendorData",
NULL},
};
struct acpi_rsdump_info acpi_rs_dump_pin_function[10] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_pin_function),
"PinFunction", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(pin_function.revision_id),
"RevisionId", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(pin_function.pin_config), "PinConfig",
acpi_gbl_ppc_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(pin_function.shareable), "Sharing",
acpi_gbl_shr_decode},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_function.function_number),
"FunctionNumber", NULL},
{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(pin_function.resource_source),
"ResourceSource", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_function.pin_table_length),
"PinTableLength", NULL},
{ACPI_RSD_WORDLIST, ACPI_RSD_OFFSET(pin_function.pin_table), "PinTable",
NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_function.vendor_length),
"VendorLength", NULL},
{ACPI_RSD_SHORTLISTX, ACPI_RSD_OFFSET(pin_function.vendor_data),
"VendorData", NULL},
};
struct acpi_rsdump_info acpi_rs_dump_clock_input[7] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_clock_input),
"ClockInput", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(clock_input.revision_id), "RevisionId",
NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(clock_input.frequency_numerator),
"FrequencyNumerator", NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(clock_input.frequency_divisor),
"FrequencyDivisor", NULL},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(clock_input.scale), "Scale",
acpi_gbl_clock_input_scale},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(clock_input.mode), "Mode",
acpi_gbl_clock_input_mode},
{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(clock_input.resource_source),
"ResourceSource", NULL},
};
struct acpi_rsdump_info acpi_rs_dump_pin_config[11] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_pin_config),
"PinConfig", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(pin_config.revision_id), "RevisionId",
NULL},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(pin_config.producer_consumer),
"ProducerConsumer", acpi_gbl_consume_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(pin_config.shareable), "Sharing",
acpi_gbl_shr_decode},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(pin_config.pin_config_type),
"PinConfigType", NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(pin_config.pin_config_value),
"PinConfigValue", NULL},
{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(pin_config.resource_source),
"ResourceSource", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_config.pin_table_length),
"PinTableLength", NULL},
{ACPI_RSD_WORDLIST, ACPI_RSD_OFFSET(pin_config.pin_table), "PinTable",
NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_config.vendor_length),
"VendorLength", NULL},
{ACPI_RSD_SHORTLISTX, ACPI_RSD_OFFSET(pin_config.vendor_data),
"VendorData", NULL},
};
struct acpi_rsdump_info acpi_rs_dump_pin_group[8] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_pin_group),
"PinGroup", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(pin_group.revision_id), "RevisionId",
NULL},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(pin_group.producer_consumer),
"ProducerConsumer", acpi_gbl_consume_decode},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_group.pin_table_length),
"PinTableLength", NULL},
{ACPI_RSD_WORDLIST, ACPI_RSD_OFFSET(pin_group.pin_table), "PinTable",
NULL},
{ACPI_RSD_LABEL, ACPI_RSD_OFFSET(pin_group.resource_label),
"ResourceLabel", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_group.vendor_length),
"VendorLength", NULL},
{ACPI_RSD_SHORTLISTX, ACPI_RSD_OFFSET(pin_group.vendor_data),
"VendorData", NULL},
};
struct acpi_rsdump_info acpi_rs_dump_pin_group_function[9] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_pin_group_function),
"PinGroupFunction", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(pin_group_function.revision_id),
"RevisionId", NULL},
{ACPI_RSD_1BITFLAG,
ACPI_RSD_OFFSET(pin_group_function.producer_consumer),
"ProducerConsumer", acpi_gbl_consume_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(pin_group_function.shareable),
"Sharing", acpi_gbl_shr_decode},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_group_function.function_number),
"FunctionNumber", NULL},
{ACPI_RSD_SOURCE_LABEL,
ACPI_RSD_OFFSET(pin_group_function.resource_source_label),
"ResourceSourceLabel", NULL},
{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(pin_group_function.resource_source),
"ResourceSource", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_group_function.vendor_length),
"VendorLength", NULL},
{ACPI_RSD_SHORTLISTX, ACPI_RSD_OFFSET(pin_group_function.vendor_data),
"VendorData", NULL},
};
struct acpi_rsdump_info acpi_rs_dump_pin_group_config[10] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_pin_group_config),
"PinGroupConfig", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(pin_group_config.revision_id),
"RevisionId", NULL},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(pin_group_config.producer_consumer),
"ProducerConsumer", acpi_gbl_consume_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(pin_group_config.shareable),
"Sharing", acpi_gbl_shr_decode},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(pin_group_config.pin_config_type),
"PinConfigType", NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(pin_group_config.pin_config_value),
"PinConfigValue", NULL},
{ACPI_RSD_SOURCE_LABEL,
ACPI_RSD_OFFSET(pin_group_config.resource_source_label),
"ResourceSourceLabel", NULL},
{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(pin_group_config.resource_source),
"ResourceSource", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(pin_group_config.vendor_length),
"VendorLength", NULL},
{ACPI_RSD_SHORTLISTX, ACPI_RSD_OFFSET(pin_group_config.vendor_data),
"VendorData", NULL},
};
struct acpi_rsdump_info acpi_rs_dump_fixed_dma[4] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_fixed_dma),
"FixedDma", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(fixed_dma.request_lines),
"RequestLines", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(fixed_dma.channels), "Channels",
NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(fixed_dma.width), "TransferWidth",
acpi_gbl_dts_decode},
};
#define ACPI_RS_DUMP_COMMON_SERIAL_BUS \
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET (common_serial_bus.revision_id), "RevisionId", NULL}, \
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET (common_serial_bus.type), "Type", acpi_gbl_sbt_decode}, \
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET (common_serial_bus.producer_consumer), "ProducerConsumer", acpi_gbl_consume_decode}, \
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET (common_serial_bus.slave_mode), "SlaveMode", acpi_gbl_sm_decode}, \
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET (common_serial_bus.connection_sharing),"ConnectionSharing", acpi_gbl_shr_decode}, \
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET (common_serial_bus.type_revision_id), "TypeRevisionId", NULL}, \
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET (common_serial_bus.type_data_length), "TypeDataLength", NULL}, \
{ACPI_RSD_SOURCE, ACPI_RSD_OFFSET (common_serial_bus.resource_source), "ResourceSource", NULL}, \
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET (common_serial_bus.vendor_length), "VendorLength", NULL}, \
{ACPI_RSD_SHORTLISTX,ACPI_RSD_OFFSET (common_serial_bus.vendor_data), "VendorData", NULL},
struct acpi_rsdump_info acpi_rs_dump_common_serial_bus[11] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_common_serial_bus),
"Common Serial Bus", NULL},
ACPI_RS_DUMP_COMMON_SERIAL_BUS
};
struct acpi_rsdump_info acpi_rs_dump_csi2_serial_bus[11] = {
{ ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_csi2_serial_bus),
"Camera Serial Bus", NULL },
{ ACPI_RSD_UINT8, ACPI_RSD_OFFSET(csi2_serial_bus.revision_id),
"RevisionId", NULL },
{ ACPI_RSD_UINT8, ACPI_RSD_OFFSET(csi2_serial_bus.type), "Type",
acpi_gbl_sbt_decode },
{ ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(csi2_serial_bus.producer_consumer),
"ProducerConsumer", acpi_gbl_consume_decode },
{ ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(csi2_serial_bus.slave_mode),
"SlaveMode", acpi_gbl_sm_decode },
{ ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(csi2_serial_bus.phy_type),
"PhyType", acpi_gbl_phy_decode },
{ ACPI_RSD_6BITFLAG,
ACPI_RSD_OFFSET(csi2_serial_bus.local_port_instance),
"LocalPortInstance", NULL },
{ ACPI_RSD_UINT8, ACPI_RSD_OFFSET(csi2_serial_bus.type_revision_id),
"TypeRevisionId", NULL },
{ ACPI_RSD_UINT16, ACPI_RSD_OFFSET(csi2_serial_bus.vendor_length),
"VendorLength", NULL },
{ ACPI_RSD_SHORTLISTX, ACPI_RSD_OFFSET(csi2_serial_bus.vendor_data),
"VendorData", NULL },
{ ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(csi2_serial_bus.resource_source),
"ResourceSource", NULL },
};
struct acpi_rsdump_info acpi_rs_dump_i2c_serial_bus[14] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_i2c_serial_bus),
"I2C Serial Bus", NULL},
ACPI_RS_DUMP_COMMON_SERIAL_BUS {ACPI_RSD_1BITFLAG,
ACPI_RSD_OFFSET(i2c_serial_bus.
access_mode),
"AccessMode", acpi_gbl_am_decode},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(i2c_serial_bus.connection_speed),
"ConnectionSpeed", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(i2c_serial_bus.slave_address),
"SlaveAddress", NULL},
};
struct acpi_rsdump_info acpi_rs_dump_spi_serial_bus[18] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_spi_serial_bus),
"Spi Serial Bus", NULL},
ACPI_RS_DUMP_COMMON_SERIAL_BUS {ACPI_RSD_1BITFLAG,
ACPI_RSD_OFFSET(spi_serial_bus.
wire_mode), "WireMode",
acpi_gbl_wm_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(spi_serial_bus.device_polarity),
"DevicePolarity", acpi_gbl_dp_decode},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(spi_serial_bus.data_bit_length),
"DataBitLength", NULL},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(spi_serial_bus.clock_phase),
"ClockPhase", acpi_gbl_cph_decode},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(spi_serial_bus.clock_polarity),
"ClockPolarity", acpi_gbl_cpo_decode},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(spi_serial_bus.device_selection),
"DeviceSelection", NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(spi_serial_bus.connection_speed),
"ConnectionSpeed", NULL},
};
struct acpi_rsdump_info acpi_rs_dump_uart_serial_bus[20] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_uart_serial_bus),
"Uart Serial Bus", NULL},
ACPI_RS_DUMP_COMMON_SERIAL_BUS {ACPI_RSD_2BITFLAG,
ACPI_RSD_OFFSET(uart_serial_bus.
flow_control),
"FlowControl", acpi_gbl_fc_decode},
{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(uart_serial_bus.stop_bits),
"StopBits", acpi_gbl_sb_decode},
{ACPI_RSD_3BITFLAG, ACPI_RSD_OFFSET(uart_serial_bus.data_bits),
"DataBits", acpi_gbl_bpb_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(uart_serial_bus.endian), "Endian",
acpi_gbl_ed_decode},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(uart_serial_bus.parity), "Parity",
acpi_gbl_pt_decode},
{ACPI_RSD_UINT8, ACPI_RSD_OFFSET(uart_serial_bus.lines_enabled),
"LinesEnabled", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(uart_serial_bus.rx_fifo_size),
"RxFifoSize", NULL},
{ACPI_RSD_UINT16, ACPI_RSD_OFFSET(uart_serial_bus.tx_fifo_size),
"TxFifoSize", NULL},
{ACPI_RSD_UINT32, ACPI_RSD_OFFSET(uart_serial_bus.default_baud_rate),
"ConnectionSpeed", NULL},
};
/*
* Tables used for common address descriptor flag fields
*/
struct acpi_rsdump_info acpi_rs_dump_general_flags[5] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_general_flags), NULL,
NULL},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(address.producer_consumer),
"Consumer/Producer", acpi_gbl_consume_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(address.decode), "Address Decode",
acpi_gbl_dec_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(address.min_address_fixed),
"Min Relocatability", acpi_gbl_min_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(address.max_address_fixed),
"Max Relocatability", acpi_gbl_max_decode}
};
struct acpi_rsdump_info acpi_rs_dump_memory_flags[5] = {
{ACPI_RSD_LITERAL, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_memory_flags),
"Resource Type", (void *)"Memory Range"},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(address.info.mem.write_protect),
"Write Protect", acpi_gbl_rw_decode},
{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(address.info.mem.caching),
"Caching", acpi_gbl_mem_decode},
{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(address.info.mem.range_type),
"Range Type", acpi_gbl_mtp_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(address.info.mem.translation),
"Translation", acpi_gbl_ttp_decode}
};
struct acpi_rsdump_info acpi_rs_dump_io_flags[4] = {
{ACPI_RSD_LITERAL, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_io_flags),
"Resource Type", (void *)"I/O Range"},
{ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(address.info.io.range_type),
"Range Type", acpi_gbl_rng_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(address.info.io.translation),
"Translation", acpi_gbl_ttp_decode},
{ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(address.info.io.translation_type),
"Translation Type", acpi_gbl_trs_decode}
};
/*
* Table used to dump _PRT contents
*/
struct acpi_rsdump_info acpi_rs_dump_prt[5] = {
{ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_prt), NULL, NULL},
{ACPI_RSD_UINT64, ACPI_PRT_OFFSET(address), "Address", NULL},
{ACPI_RSD_UINT32, ACPI_PRT_OFFSET(pin), "Pin", NULL},
{ACPI_RSD_STRING, ACPI_PRT_OFFSET(source[0]), "Source", NULL},
{ACPI_RSD_UINT32, ACPI_PRT_OFFSET(source_index), "Source Index", NULL}
};
#endif
| linux-master | drivers/acpi/acpica/rsdumpinfo.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: utdelete - object deletion and reference count utilities
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"
#include "acnamesp.h"
#include "acevents.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utdelete")
/* Local prototypes */
static void acpi_ut_delete_internal_obj(union acpi_operand_object *object);
static void
acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action);
/*******************************************************************************
*
* FUNCTION: acpi_ut_delete_internal_obj
*
* PARAMETERS: object - Object to be deleted
*
* RETURN: None
*
* DESCRIPTION: Low level object deletion, after reference counts have been
* updated (All reference counts, including sub-objects!)
*
******************************************************************************/
static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
{
void *obj_pointer = NULL;
union acpi_operand_object *handler_desc;
union acpi_operand_object *second_desc;
union acpi_operand_object *next_desc;
union acpi_operand_object *start_desc;
union acpi_operand_object **last_obj_ptr;
ACPI_FUNCTION_TRACE_PTR(ut_delete_internal_obj, object);
if (!object) {
return_VOID;
}
/*
* Must delete or free any pointers within the object that are not
* actual ACPI objects (for example, a raw buffer pointer).
*/
switch (object->common.type) {
case ACPI_TYPE_STRING:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"**** String %p, ptr %p\n", object,
object->string.pointer));
/* Free the actual string buffer */
if (!(object->common.flags & AOPOBJ_STATIC_POINTER)) {
/* But only if it is NOT a pointer into an ACPI table */
obj_pointer = object->string.pointer;
}
break;
case ACPI_TYPE_BUFFER:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"**** Buffer %p, ptr %p\n", object,
object->buffer.pointer));
/* Free the actual buffer */
if (!(object->common.flags & AOPOBJ_STATIC_POINTER)) {
/* But only if it is NOT a pointer into an ACPI table */
obj_pointer = object->buffer.pointer;
}
break;
case ACPI_TYPE_PACKAGE:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
" **** Package of count %X\n",
object->package.count));
/*
* Elements of the package are not handled here, they are deleted
* separately
*/
/* Free the (variable length) element pointer array */
obj_pointer = object->package.elements;
break;
/*
* These objects have a possible list of notify handlers.
* Device object also may have a GPE block.
*/
case ACPI_TYPE_DEVICE:
if (object->device.gpe_block) {
(void)acpi_ev_delete_gpe_block(object->device.
gpe_block);
}
ACPI_FALLTHROUGH;
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
/* Walk the address handler list for this object */
handler_desc = object->common_notify.handler;
while (handler_desc) {
next_desc = handler_desc->address_space.next;
acpi_ut_remove_reference(handler_desc);
handler_desc = next_desc;
}
break;
case ACPI_TYPE_MUTEX:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Mutex %p, OS Mutex %p\n",
object, object->mutex.os_mutex));
if (object == acpi_gbl_global_lock_mutex) {
/* Global Lock has extra semaphore */
(void)
acpi_os_delete_semaphore
(acpi_gbl_global_lock_semaphore);
acpi_gbl_global_lock_semaphore = NULL;
acpi_os_delete_mutex(object->mutex.os_mutex);
acpi_gbl_global_lock_mutex = NULL;
} else {
acpi_ex_unlink_mutex(object);
acpi_os_delete_mutex(object->mutex.os_mutex);
}
break;
case ACPI_TYPE_EVENT:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Event %p, OS Semaphore %p\n",
object, object->event.os_semaphore));
(void)acpi_os_delete_semaphore(object->event.os_semaphore);
object->event.os_semaphore = NULL;
break;
case ACPI_TYPE_METHOD:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Method %p\n", object));
/* Delete the method mutex if it exists */
if (object->method.mutex) {
acpi_os_delete_mutex(object->method.mutex->mutex.
os_mutex);
acpi_ut_delete_object_desc(object->method.mutex);
object->method.mutex = NULL;
}
if (object->method.node) {
object->method.node = NULL;
}
break;
case ACPI_TYPE_REGION:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Region %p\n", object));
/*
* Update address_range list. However, only permanent regions
* are installed in this list. (Not created within a method)
*/
if (!(object->region.node->flags & ANOBJ_TEMPORARY)) {
acpi_ut_remove_address_range(object->region.space_id,
object->region.node);
}
second_desc = acpi_ns_get_secondary_object(object);
if (second_desc) {
/*
* Free the region_context if and only if the handler is one of the
* default handlers -- and therefore, we created the context object
* locally, it was not created by an external caller.
*/
handler_desc = object->region.handler;
if (handler_desc) {
next_desc =
handler_desc->address_space.region_list;
start_desc = next_desc;
last_obj_ptr =
&handler_desc->address_space.region_list;
/* Remove the region object from the handler list */
while (next_desc) {
if (next_desc == object) {
*last_obj_ptr =
next_desc->region.next;
break;
}
/* Walk the linked list of handlers */
last_obj_ptr = &next_desc->region.next;
next_desc = next_desc->region.next;
/* Prevent infinite loop if list is corrupted */
if (next_desc == start_desc) {
ACPI_ERROR((AE_INFO,
"Circular region list in address handler object %p",
handler_desc));
return_VOID;
}
}
if (handler_desc->address_space.handler_flags &
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) {
/* Deactivate region and free region context */
if (handler_desc->address_space.setup) {
(void)handler_desc->
address_space.setup(object,
ACPI_REGION_DEACTIVATE,
handler_desc->
address_space.
context,
&second_desc->
extra.
region_context);
}
}
acpi_ut_remove_reference(handler_desc);
}
/* Now we can free the Extra object */
acpi_ut_delete_object_desc(second_desc);
}
if (object->field.internal_pcc_buffer) {
ACPI_FREE(object->field.internal_pcc_buffer);
}
break;
case ACPI_TYPE_BUFFER_FIELD:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Buffer Field %p\n", object));
second_desc = acpi_ns_get_secondary_object(object);
if (second_desc) {
acpi_ut_delete_object_desc(second_desc);
}
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Bank Field %p\n", object));
second_desc = acpi_ns_get_secondary_object(object);
if (second_desc) {
acpi_ut_delete_object_desc(second_desc);
}
break;
case ACPI_TYPE_LOCAL_ADDRESS_HANDLER:
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"***** Address handler %p\n", object));
acpi_os_delete_mutex(object->address_space.context_mutex);
break;
default:
break;
}
/* Free any allocated memory (pointer within the object) found above */
if (obj_pointer) {
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"Deleting Object Subptr %p\n", obj_pointer));
ACPI_FREE(obj_pointer);
}
/* Now the object can be safely deleted */
ACPI_DEBUG_PRINT_RAW((ACPI_DB_ALLOCATIONS,
"%s: Deleting Object %p [%s]\n",
ACPI_GET_FUNCTION_NAME, object,
acpi_ut_get_object_type_name(object)));
acpi_ut_delete_object_desc(object);
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_delete_internal_object_list
*
* PARAMETERS: obj_list - Pointer to the list to be deleted
*
* RETURN: None
*
* DESCRIPTION: This function deletes an internal object list, including both
* simple objects and package objects
*
******************************************************************************/
void acpi_ut_delete_internal_object_list(union acpi_operand_object **obj_list)
{
union acpi_operand_object **internal_obj;
ACPI_FUNCTION_ENTRY();
/* Walk the null-terminated internal list */
for (internal_obj = obj_list; *internal_obj; internal_obj++) {
acpi_ut_remove_reference(*internal_obj);
}
/* Free the combined parameter pointer list and object array */
ACPI_FREE(obj_list);
return;
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_update_ref_count
*
* PARAMETERS: object - Object whose ref count is to be updated
* action - What to do (REF_INCREMENT or REF_DECREMENT)
*
* RETURN: None. Sets new reference count within the object
*
* DESCRIPTION: Modify the reference count for an internal acpi object
*
******************************************************************************/
static void
acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action)
{
u16 original_count;
u16 new_count = 0;
acpi_cpu_flags lock_flags;
char *message;
ACPI_FUNCTION_NAME(ut_update_ref_count);
if (!object) {
return;
}
/*
* Always get the reference count lock. Note: Interpreter and/or
* Namespace is not always locked when this function is called.
*/
lock_flags = acpi_os_acquire_lock(acpi_gbl_reference_count_lock);
original_count = object->common.reference_count;
/* Perform the reference count action (increment, decrement) */
switch (action) {
case REF_INCREMENT:
new_count = original_count + 1;
object->common.reference_count = new_count;
acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
/* The current reference count should never be zero here */
if (!original_count) {
ACPI_WARNING((AE_INFO,
"Obj %p, Reference Count was zero before increment\n",
object));
}
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"Obj %p Type %.2X [%s] Refs %.2X [Incremented]\n",
object, object->common.type,
acpi_ut_get_object_type_name(object),
new_count));
message = "Incremement";
break;
case REF_DECREMENT:
/* The current reference count must be non-zero */
if (original_count) {
new_count = original_count - 1;
object->common.reference_count = new_count;
}
acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
if (!original_count) {
ACPI_WARNING((AE_INFO,
"Obj %p, Reference Count is already zero, cannot decrement\n",
object));
return;
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_ALLOCATIONS,
"%s: Obj %p Type %.2X Refs %.2X [Decremented]\n",
ACPI_GET_FUNCTION_NAME, object,
object->common.type, new_count));
/* Actually delete the object on a reference count of zero */
if (new_count == 0) {
acpi_ut_delete_internal_obj(object);
}
message = "Decrement";
break;
default:
acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
ACPI_ERROR((AE_INFO, "Unknown Reference Count action (0x%X)",
action));
return;
}
/*
* Sanity check the reference count, for debug purposes only.
* (A deleted object will have a huge reference count)
*/
if (new_count > ACPI_MAX_REFERENCE_COUNT) {
ACPI_WARNING((AE_INFO,
"Large Reference Count (0x%X) in object %p, Type=0x%.2X Operation=%s",
new_count, object, object->common.type, message));
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_update_object_reference
*
* PARAMETERS: object - Increment or decrement the ref count for
* this object and all sub-objects
* action - Either REF_INCREMENT or REF_DECREMENT
*
* RETURN: Status
*
* DESCRIPTION: Increment or decrement the object reference count
*
* Object references are incremented when:
* 1) An object is attached to a Node (namespace object)
* 2) An object is copied (all subobjects must be incremented)
*
* Object references are decremented when:
* 1) An object is detached from an Node
*
******************************************************************************/
acpi_status
acpi_ut_update_object_reference(union acpi_operand_object *object, u16 action)
{
acpi_status status = AE_OK;
union acpi_generic_state *state_list = NULL;
union acpi_operand_object *next_object = NULL;
union acpi_operand_object *prev_object;
union acpi_generic_state *state;
u32 i;
ACPI_FUNCTION_NAME(ut_update_object_reference);
while (object) {
/* Make sure that this isn't a namespace handle */
if (ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED) {
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"Object %p is NS handle\n", object));
return (AE_OK);
}
/*
* All sub-objects must have their reference count updated
* also. Different object types have different subobjects.
*/
switch (object->common.type) {
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_POWER:
case ACPI_TYPE_THERMAL:
/*
* Update the notify objects for these types (if present)
* Two lists, system and device notify handlers.
*/
for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
prev_object =
object->common_notify.notify_list[i];
while (prev_object) {
next_object =
prev_object->notify.next[i];
acpi_ut_update_ref_count(prev_object,
action);
prev_object = next_object;
}
}
break;
case ACPI_TYPE_PACKAGE:
/*
* We must update all the sub-objects of the package,
* each of whom may have their own sub-objects.
*/
for (i = 0; i < object->package.count; i++) {
/*
* Null package elements are legal and can be simply
* ignored.
*/
next_object = object->package.elements[i];
if (!next_object) {
continue;
}
switch (next_object->common.type) {
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/*
* For these very simple sub-objects, we can just
* update the reference count here and continue.
* Greatly increases performance of this operation.
*/
acpi_ut_update_ref_count(next_object,
action);
break;
default:
/*
* For complex sub-objects, push them onto the stack
* for later processing (this eliminates recursion.)
*/
status =
acpi_ut_create_update_state_and_push
(next_object, action, &state_list);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
break;
}
}
next_object = NULL;
break;
case ACPI_TYPE_BUFFER_FIELD:
next_object = object->buffer_field.buffer_obj;
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
next_object = object->bank_field.bank_obj;
status =
acpi_ut_create_update_state_and_push(object->
bank_field.
region_obj,
action,
&state_list);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
break;
case ACPI_TYPE_LOCAL_INDEX_FIELD:
next_object = object->index_field.index_obj;
status =
acpi_ut_create_update_state_and_push(object->
index_field.
data_obj,
action,
&state_list);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
break;
case ACPI_TYPE_LOCAL_REFERENCE:
/*
* The target of an Index (a package, string, or buffer) or a named
* reference must track changes to the ref count of the index or
* target object.
*/
if ((object->reference.class == ACPI_REFCLASS_INDEX) ||
(object->reference.class == ACPI_REFCLASS_NAME)) {
next_object = object->reference.object;
}
break;
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_REGION:
default:
break; /* No subobjects for all other types */
}
/*
* Now we can update the count in the main object. This can only
* happen after we update the sub-objects in case this causes the
* main object to be deleted.
*/
acpi_ut_update_ref_count(object, action);
object = NULL;
/* Move on to the next object to be updated */
if (next_object) {
object = next_object;
next_object = NULL;
} else if (state_list) {
state = acpi_ut_pop_generic_state(&state_list);
object = state->update.object;
acpi_ut_delete_generic_state(state);
}
}
return (AE_OK);
error_exit:
ACPI_EXCEPTION((AE_INFO, status,
"Could not update object reference count"));
/* Free any stacked Update State objects */
while (state_list) {
state = acpi_ut_pop_generic_state(&state_list);
acpi_ut_delete_generic_state(state);
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_add_reference
*
* PARAMETERS: object - Object whose reference count is to be
* incremented
*
* RETURN: None
*
* DESCRIPTION: Add one reference to an ACPI object
*
******************************************************************************/
void acpi_ut_add_reference(union acpi_operand_object *object)
{
ACPI_FUNCTION_NAME(ut_add_reference);
/* Ensure that we have a valid object */
if (!acpi_ut_valid_internal_object(object)) {
return;
}
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
"Obj %p Current Refs=%X [To Be Incremented]\n",
object, object->common.reference_count));
/* Increment the reference count */
(void)acpi_ut_update_object_reference(object, REF_INCREMENT);
return;
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_remove_reference
*
* PARAMETERS: object - Object whose ref count will be decremented
*
* RETURN: None
*
* DESCRIPTION: Decrement the reference count of an ACPI internal object
*
******************************************************************************/
void acpi_ut_remove_reference(union acpi_operand_object *object)
{
ACPI_FUNCTION_NAME(ut_remove_reference);
/*
* Allow a NULL pointer to be passed in, just ignore it. This saves
* each caller from having to check. Also, ignore NS nodes.
*/
if (!object ||
(ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED)) {
return;
}
/* Ensure that we have a valid object */
if (!acpi_ut_valid_internal_object(object)) {
return;
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_ALLOCATIONS,
"%s: Obj %p Current Refs=%X [To Be Decremented]\n",
ACPI_GET_FUNCTION_NAME, object,
object->common.reference_count));
/*
* Decrement the reference count, and only actually delete the object
* if the reference count becomes 0. (Must also decrement the ref count
* of all subobjects!)
*/
(void)acpi_ut_update_object_reference(object, REF_DECREMENT);
return;
}
| linux-master | drivers/acpi/acpica/utdelete.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Name: hwsleep.c - ACPI Hardware Sleep/Wake Support functions for the
* original/legacy sleep/PM registers.
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_HARDWARE
ACPI_MODULE_NAME("hwsleep")
#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
/*******************************************************************************
*
* FUNCTION: acpi_hw_legacy_sleep
*
* PARAMETERS: sleep_state - Which sleep state to enter
*
* RETURN: Status
*
* DESCRIPTION: Enter a system sleep state via the legacy FADT PM registers
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
*
******************************************************************************/
acpi_status acpi_hw_legacy_sleep(u8 sleep_state)
{
struct acpi_bit_register_info *sleep_type_reg_info;
struct acpi_bit_register_info *sleep_enable_reg_info;
u32 pm1a_control;
u32 pm1b_control;
u32 in_value;
acpi_status status;
ACPI_FUNCTION_TRACE(hw_legacy_sleep);
sleep_type_reg_info =
acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE);
sleep_enable_reg_info =
acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE);
/* Clear wake status */
status = acpi_write_bit_register(ACPI_BITREG_WAKE_STATUS,
ACPI_CLEAR_STATUS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Disable all GPEs */
status = acpi_hw_disable_all_gpes();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_hw_clear_acpi_status();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
acpi_gbl_system_awake_and_running = FALSE;
/* Enable all wakeup GPEs */
status = acpi_hw_enable_all_wakeup_gpes();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Get current value of PM1A control */
status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL,
&pm1a_control);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
ACPI_DEBUG_PRINT((ACPI_DB_INIT,
"Entering sleep state [S%u]\n", sleep_state));
/* Clear the SLP_EN and SLP_TYP fields */
pm1a_control &= ~(sleep_type_reg_info->access_bit_mask |
sleep_enable_reg_info->access_bit_mask);
pm1b_control = pm1a_control;
/* Insert the SLP_TYP bits */
pm1a_control |=
(acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position);
pm1b_control |=
(acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position);
/*
* We split the writes of SLP_TYP and SLP_EN to workaround
* poorly implemented hardware.
*/
/* Write #1: write the SLP_TYP data to the PM1 Control registers */
status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Insert the sleep enable (SLP_EN) bit */
pm1a_control |= sleep_enable_reg_info->access_bit_mask;
pm1b_control |= sleep_enable_reg_info->access_bit_mask;
/* Flush caches, as per ACPI specification */
if (sleep_state < ACPI_STATE_S4) {
ACPI_FLUSH_CPU_CACHE();
}
status = acpi_os_enter_sleep(sleep_state, pm1a_control, pm1b_control);
if (status == AE_CTRL_TERMINATE) {
return_ACPI_STATUS(AE_OK);
}
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Write #2: Write both SLP_TYP + SLP_EN */
status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (sleep_state > ACPI_STATE_S3) {
/*
* We wanted to sleep > S3, but it didn't happen (by virtue of the
* fact that we are still executing!)
*
* Wait ten seconds, then try again. This is to get S4/S5 to work on
* all machines.
*
* We wait so long to allow chipsets that poll this reg very slowly
* to still read the right value. Ideally, this block would go
* away entirely.
*/
acpi_os_stall(10 * ACPI_USEC_PER_SEC);
status = acpi_hw_register_write(ACPI_REGISTER_PM1_CONTROL,
sleep_enable_reg_info->
access_bit_mask);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/* Wait for transition back to Working State */
do {
status =
acpi_read_bit_register(ACPI_BITREG_WAKE_STATUS, &in_value);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
} while (!in_value);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_hw_legacy_wake_prep
*
* PARAMETERS: sleep_state - Which sleep state we just exited
*
* RETURN: Status
*
* DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a
* sleep.
* Called with interrupts ENABLED.
*
******************************************************************************/
acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state)
{
acpi_status status = AE_OK;
struct acpi_bit_register_info *sleep_type_reg_info;
struct acpi_bit_register_info *sleep_enable_reg_info;
u32 pm1a_control;
u32 pm1b_control;
ACPI_FUNCTION_TRACE(hw_legacy_wake_prep);
/*
* Set SLP_TYPE and SLP_EN to state S0.
* This is unclear from the ACPI Spec, but it is required
* by some machines.
*/
if (acpi_gbl_sleep_type_a_s0 != ACPI_SLEEP_TYPE_INVALID) {
sleep_type_reg_info =
acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE);
sleep_enable_reg_info =
acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE);
/* Get current value of PM1A control */
status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL,
&pm1a_control);
if (ACPI_SUCCESS(status)) {
/* Clear the SLP_EN and SLP_TYP fields */
pm1a_control &= ~(sleep_type_reg_info->access_bit_mask |
sleep_enable_reg_info->
access_bit_mask);
pm1b_control = pm1a_control;
/* Insert the SLP_TYP bits */
pm1a_control |= (acpi_gbl_sleep_type_a_s0 <<
sleep_type_reg_info->bit_position);
pm1b_control |= (acpi_gbl_sleep_type_b_s0 <<
sleep_type_reg_info->bit_position);
/* Write the control registers and ignore any errors */
(void)acpi_hw_write_pm1_control(pm1a_control,
pm1b_control);
}
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_hw_legacy_wake
*
* PARAMETERS: sleep_state - Which sleep state we just exited
*
* RETURN: Status
*
* DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
* Called with interrupts ENABLED.
*
******************************************************************************/
acpi_status acpi_hw_legacy_wake(u8 sleep_state)
{
acpi_status status;
ACPI_FUNCTION_TRACE(hw_legacy_wake);
/* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */
acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID;
acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WAKING);
/*
* GPEs must be enabled before _WAK is called as GPEs
* might get fired there
*
* Restore the GPEs:
* 1) Disable all GPEs
* 2) Enable all runtime GPEs
*/
status = acpi_hw_disable_all_gpes();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_hw_enable_all_runtime_gpes();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Now we can execute _WAK, etc. Some machines require that the GPEs
* are enabled before the wake methods are executed.
*/
acpi_hw_execute_sleep_method(METHOD_PATHNAME__WAK, sleep_state);
/*
* Some BIOS code assumes that WAK_STS will be cleared on resume
* and use it to determine whether the system is rebooting or
* resuming. Clear WAK_STS for compatibility.
*/
(void)acpi_write_bit_register(ACPI_BITREG_WAKE_STATUS,
ACPI_CLEAR_STATUS);
acpi_gbl_system_awake_and_running = TRUE;
/* Enable power button */
(void)
acpi_write_bit_register(acpi_gbl_fixed_event_info
[ACPI_EVENT_POWER_BUTTON].
enable_register_id, ACPI_ENABLE_EVENT);
(void)
acpi_write_bit_register(acpi_gbl_fixed_event_info
[ACPI_EVENT_POWER_BUTTON].
status_register_id, ACPI_CLEAR_STATUS);
/* Enable sleep button */
(void)
acpi_write_bit_register(acpi_gbl_fixed_event_info
[ACPI_EVENT_SLEEP_BUTTON].
enable_register_id, ACPI_ENABLE_EVENT);
(void)
acpi_write_bit_register(acpi_gbl_fixed_event_info
[ACPI_EVENT_SLEEP_BUTTON].
status_register_id, ACPI_CLEAR_STATUS);
acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WORKING);
return_ACPI_STATUS(status);
}
#endif /* !ACPI_REDUCED_HARDWARE */
| linux-master | drivers/acpi/acpica/hwsleep.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: utxferror - Various error/warning output functions
*
******************************************************************************/
#define EXPORT_ACPI_INTERFACES
#include <acpi/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utxferror")
/*
* This module is used for the in-kernel ACPICA as well as the ACPICA
* tools/applications.
*/
#ifndef ACPI_NO_ERROR_MESSAGES /* Entire module */
/*******************************************************************************
*
* FUNCTION: acpi_error
*
* PARAMETERS: module_name - Caller's module name (for error output)
* line_number - Caller's line number (for error output)
* format - Printf format string + additional args
*
* RETURN: None
*
* DESCRIPTION: Print "ACPI Error" message with module/line/version info
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_error(const char *module_name, u32 line_number, const char *format, ...)
{
va_list arg_list;
ACPI_MSG_REDIRECT_BEGIN;
acpi_os_printf(ACPI_MSG_ERROR);
va_start(arg_list, format);
acpi_os_vprintf(format, arg_list);
ACPI_MSG_SUFFIX;
va_end(arg_list);
ACPI_MSG_REDIRECT_END;
}
ACPI_EXPORT_SYMBOL(acpi_error)
/*******************************************************************************
*
* FUNCTION: acpi_exception
*
* PARAMETERS: module_name - Caller's module name (for error output)
* line_number - Caller's line number (for error output)
* status - Status value to be decoded/formatted
* format - Printf format string + additional args
*
* RETURN: None
*
* DESCRIPTION: Print an "ACPI Error" message with module/line/version
* info as well as decoded acpi_status.
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_exception(const char *module_name,
u32 line_number, acpi_status status, const char *format, ...)
{
va_list arg_list;
ACPI_MSG_REDIRECT_BEGIN;
/* For AE_OK, just print the message */
if (ACPI_SUCCESS(status)) {
acpi_os_printf(ACPI_MSG_ERROR);
} else {
acpi_os_printf(ACPI_MSG_ERROR "%s, ",
acpi_format_exception(status));
}
va_start(arg_list, format);
acpi_os_vprintf(format, arg_list);
ACPI_MSG_SUFFIX;
va_end(arg_list);
ACPI_MSG_REDIRECT_END;
}
ACPI_EXPORT_SYMBOL(acpi_exception)
/*******************************************************************************
*
* FUNCTION: acpi_warning
*
* PARAMETERS: module_name - Caller's module name (for warning output)
* line_number - Caller's line number (for warning output)
* format - Printf format string + additional args
*
* RETURN: None
*
* DESCRIPTION: Print "ACPI Warning" message with module/line/version info
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_warning(const char *module_name, u32 line_number, const char *format, ...)
{
va_list arg_list;
ACPI_MSG_REDIRECT_BEGIN;
acpi_os_printf(ACPI_MSG_WARNING);
va_start(arg_list, format);
acpi_os_vprintf(format, arg_list);
ACPI_MSG_SUFFIX;
va_end(arg_list);
ACPI_MSG_REDIRECT_END;
}
ACPI_EXPORT_SYMBOL(acpi_warning)
/*******************************************************************************
*
* FUNCTION: acpi_info
*
* PARAMETERS: format - Printf format string + additional args
*
* RETURN: None
*
* DESCRIPTION: Print generic "ACPI:" information message. There is no
* module/line/version info in order to keep the message simple.
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE acpi_info(const char *format, ...)
{
va_list arg_list;
ACPI_MSG_REDIRECT_BEGIN;
acpi_os_printf(ACPI_MSG_INFO);
va_start(arg_list, format);
acpi_os_vprintf(format, arg_list);
acpi_os_printf("\n");
va_end(arg_list);
ACPI_MSG_REDIRECT_END;
}
ACPI_EXPORT_SYMBOL(acpi_info)
/*******************************************************************************
*
* FUNCTION: acpi_bios_error
*
* PARAMETERS: module_name - Caller's module name (for error output)
* line_number - Caller's line number (for error output)
* format - Printf format string + additional args
*
* RETURN: None
*
* DESCRIPTION: Print "ACPI Firmware Error" message with module/line/version
* info
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_bios_error(const char *module_name,
u32 line_number, const char *format, ...)
{
va_list arg_list;
ACPI_MSG_REDIRECT_BEGIN;
acpi_os_printf(ACPI_MSG_BIOS_ERROR);
va_start(arg_list, format);
acpi_os_vprintf(format, arg_list);
ACPI_MSG_SUFFIX;
va_end(arg_list);
ACPI_MSG_REDIRECT_END;
}
ACPI_EXPORT_SYMBOL(acpi_bios_error)
/*******************************************************************************
*
* FUNCTION: acpi_bios_exception
*
* PARAMETERS: module_name - Caller's module name (for error output)
* line_number - Caller's line number (for error output)
* status - Status value to be decoded/formatted
* format - Printf format string + additional args
*
* RETURN: None
*
* DESCRIPTION: Print an "ACPI Firmware Error" message with module/line/version
* info as well as decoded acpi_status.
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_bios_exception(const char *module_name,
u32 line_number,
acpi_status status, const char *format, ...)
{
va_list arg_list;
ACPI_MSG_REDIRECT_BEGIN;
/* For AE_OK, just print the message */
if (ACPI_SUCCESS(status)) {
acpi_os_printf(ACPI_MSG_BIOS_ERROR);
} else {
acpi_os_printf(ACPI_MSG_BIOS_ERROR "%s, ",
acpi_format_exception(status));
}
va_start(arg_list, format);
acpi_os_vprintf(format, arg_list);
ACPI_MSG_SUFFIX;
va_end(arg_list);
ACPI_MSG_REDIRECT_END;
}
ACPI_EXPORT_SYMBOL(acpi_bios_exception)
/*******************************************************************************
*
* FUNCTION: acpi_bios_warning
*
* PARAMETERS: module_name - Caller's module name (for warning output)
* line_number - Caller's line number (for warning output)
* format - Printf format string + additional args
*
* RETURN: None
*
* DESCRIPTION: Print "ACPI Firmware Warning" message with module/line/version
* info
*
******************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
acpi_bios_warning(const char *module_name,
u32 line_number, const char *format, ...)
{
va_list arg_list;
ACPI_MSG_REDIRECT_BEGIN;
acpi_os_printf(ACPI_MSG_BIOS_WARNING);
va_start(arg_list, format);
acpi_os_vprintf(format, arg_list);
ACPI_MSG_SUFFIX;
va_end(arg_list);
ACPI_MSG_REDIRECT_END;
}
ACPI_EXPORT_SYMBOL(acpi_bios_warning)
#endif /* ACPI_NO_ERROR_MESSAGES */
| linux-master | drivers/acpi/acpica/utxferror.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: dswload2 - Dispatcher second pass namespace load callbacks
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "amlcode.h"
#include "acdispat.h"
#include "acinterp.h"
#include "acnamesp.h"
#include "acevents.h"
#ifdef ACPI_EXEC_APP
#include "aecommon.h"
#endif
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dswload2")
/*******************************************************************************
*
* FUNCTION: acpi_ds_load2_begin_op
*
* PARAMETERS: walk_state - Current state of the parse tree walk
* out_op - Where to return op if a new one is created
*
* RETURN: Status
*
* DESCRIPTION: Descending callback used during the loading of ACPI tables.
*
******************************************************************************/
acpi_status
acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
union acpi_parse_object **out_op)
{
union acpi_parse_object *op;
struct acpi_namespace_node *node;
acpi_status status;
acpi_object_type object_type;
char *buffer_ptr;
u32 flags;
ACPI_FUNCTION_TRACE(ds_load2_begin_op);
op = walk_state->op;
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
walk_state));
if (op) {
if ((walk_state->control_state) &&
(walk_state->control_state->common.state ==
ACPI_CONTROL_CONDITIONAL_EXECUTING)) {
/* We are executing a while loop outside of a method */
status = acpi_ds_exec_begin_op(walk_state, out_op);
return_ACPI_STATUS(status);
}
/* We only care about Namespace opcodes here */
if ((!(walk_state->op_info->flags & AML_NSOPCODE) &&
(walk_state->opcode != AML_INT_NAMEPATH_OP)) ||
(!(walk_state->op_info->flags & AML_NAMED))) {
return_ACPI_STATUS(AE_OK);
}
/* Get the name we are going to enter or lookup in the namespace */
if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
/* For Namepath op, get the path string */
buffer_ptr = op->common.value.string;
if (!buffer_ptr) {
/* No name, just exit */
return_ACPI_STATUS(AE_OK);
}
} else {
/* Get name from the op */
buffer_ptr = ACPI_CAST_PTR(char, &op->named.name);
}
} else {
/* Get the namestring from the raw AML */
buffer_ptr =
acpi_ps_get_next_namestring(&walk_state->parser_state);
}
/* Map the opcode into an internal object type */
object_type = walk_state->op_info->object_type;
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"State=%p Op=%p Type=%X\n", walk_state, op,
object_type));
switch (walk_state->opcode) {
case AML_FIELD_OP:
case AML_BANK_FIELD_OP:
case AML_INDEX_FIELD_OP:
node = NULL;
status = AE_OK;
break;
case AML_INT_NAMEPATH_OP:
/*
* The name_path is an object reference to an existing object.
* Don't enter the name into the namespace, but look it up
* for use later.
*/
status =
acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
object_type, ACPI_IMODE_EXECUTE,
ACPI_NS_SEARCH_PARENT, walk_state, &(node));
break;
case AML_SCOPE_OP:
/* Special case for Scope(\) -> refers to the Root node */
if (op && (op->named.node == acpi_gbl_root_node)) {
node = op->named.node;
status =
acpi_ds_scope_stack_push(node, object_type,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
} else {
/*
* The Path is an object reference to an existing object.
* Don't enter the name into the namespace, but look it up
* for use later.
*/
status =
acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
object_type, ACPI_IMODE_EXECUTE,
ACPI_NS_SEARCH_PARENT, walk_state,
&(node));
if (ACPI_FAILURE(status)) {
#ifdef ACPI_ASL_COMPILER
if (status == AE_NOT_FOUND) {
status = AE_OK;
} else {
ACPI_ERROR_NAMESPACE(walk_state->
scope_info,
buffer_ptr,
status);
}
#else
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
buffer_ptr, status);
#endif
return_ACPI_STATUS(status);
}
}
/*
* We must check to make sure that the target is
* one of the opcodes that actually opens a scope
*/
switch (node->type) {
case ACPI_TYPE_ANY:
case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_POWER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
/* These are acceptable types */
break;
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/*
* These types we will allow, but we will change the type.
* This enables some existing code of the form:
*
* Name (DEB, 0)
* Scope (DEB) { ... }
*/
ACPI_WARNING((AE_INFO,
"Type override - [%4.4s] had invalid type (%s) "
"for Scope operator, changed to type ANY",
acpi_ut_get_node_name(node),
acpi_ut_get_type_name(node->type)));
node->type = ACPI_TYPE_ANY;
walk_state->scope_info->common.value = ACPI_TYPE_ANY;
break;
case ACPI_TYPE_METHOD:
/*
* Allow scope change to root during execution of module-level
* code. Root is typed METHOD during this time.
*/
if ((node == acpi_gbl_root_node) &&
(walk_state->
parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
break;
}
ACPI_FALLTHROUGH;
default:
/* All other types are an error */
ACPI_ERROR((AE_INFO,
"Invalid type (%s) for target of "
"Scope operator [%4.4s] (Cannot override)",
acpi_ut_get_type_name(node->type),
acpi_ut_get_node_name(node)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
break;
default:
/* All other opcodes */
if (op && op->common.node) {
/* This op/node was previously entered into the namespace */
node = op->common.node;
if (acpi_ns_opens_scope(object_type)) {
status =
acpi_ds_scope_stack_push(node, object_type,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
return_ACPI_STATUS(AE_OK);
}
/*
* Enter the named type into the internal namespace. We enter the name
* as we go downward in the parse tree. Any necessary subobjects that
* involve arguments to the opcode must be created as we go back up the
* parse tree later.
*
* Note: Name may already exist if we are executing a deferred opcode.
*/
if (walk_state->deferred_node) {
/* This name is already in the namespace, get the node */
node = walk_state->deferred_node;
status = AE_OK;
break;
}
flags = ACPI_NS_NO_UPSEARCH;
if (walk_state->pass_number == ACPI_IMODE_EXECUTE) {
/* Execution mode, node cannot already exist, node is temporary */
flags |= ACPI_NS_ERROR_IF_FOUND;
if (!
(walk_state->
parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
flags |= ACPI_NS_TEMPORARY;
}
}
#ifdef ACPI_ASL_COMPILER
/*
* Do not open a scope for AML_EXTERNAL_OP
* acpi_ns_lookup can open a new scope based on the object type
* of this op. AML_EXTERNAL_OP is a declaration rather than a
* definition. In the case that this external is a method object,
* acpi_ns_lookup will open a new scope. However, an AML_EXTERNAL_OP
* associated with the ACPI_TYPE_METHOD is a declaration, rather than
* a definition. Flags is set to avoid opening a scope for any
* AML_EXTERNAL_OP.
*/
if (walk_state->opcode == AML_EXTERNAL_OP) {
flags |= ACPI_NS_DONT_OPEN_SCOPE;
}
#endif
/*
* For name creation opcodes, the full namepath prefix must
* exist, except for the final (new) nameseg.
*/
if (walk_state->op_info->flags & AML_NAMED) {
flags |= ACPI_NS_PREFIX_MUST_EXIST;
}
/* Add new entry or lookup existing entry */
status =
acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
object_type, ACPI_IMODE_LOAD_PASS2, flags,
walk_state, &node);
if (ACPI_SUCCESS(status) && (flags & ACPI_NS_TEMPORARY)) {
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"***New Node [%4.4s] %p is temporary\n",
acpi_ut_get_node_name(node), node));
}
break;
}
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
buffer_ptr, status);
return_ACPI_STATUS(status);
}
if (!op) {
/* Create a new op */
op = acpi_ps_alloc_op(walk_state->opcode, walk_state->aml);
if (!op) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Initialize the new op */
if (node) {
op->named.name = node->name.integer;
}
*out_op = op;
}
/*
* Put the Node in the "op" object that the parser uses, so we
* can get it again quickly when this scope is closed
*/
op->common.node = node;
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_load2_end_op
*
* PARAMETERS: walk_state - Current state of the parse tree walk
*
* RETURN: Status
*
* DESCRIPTION: Ascending callback used during the loading of the namespace,
* both control methods and everything else.
*
******************************************************************************/
acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
{
union acpi_parse_object *op;
acpi_status status = AE_OK;
acpi_object_type object_type;
struct acpi_namespace_node *node;
union acpi_parse_object *arg;
struct acpi_namespace_node *new_node;
u32 i;
u8 region_space;
#ifdef ACPI_EXEC_APP
union acpi_operand_object *obj_desc;
char *namepath;
#endif
ACPI_FUNCTION_TRACE(ds_load2_end_op);
op = walk_state->op;
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
walk_state->op_info->name, op, walk_state));
/* Check if opcode had an associated namespace object */
if (!(walk_state->op_info->flags & AML_NSOBJECT)) {
return_ACPI_STATUS(AE_OK);
}
if (op->common.aml_opcode == AML_SCOPE_OP) {
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Ending scope Op=%p State=%p\n", op,
walk_state));
}
object_type = walk_state->op_info->object_type;
/*
* Get the Node/name from the earlier lookup
* (It was saved in the *op structure)
*/
node = op->common.node;
/*
* Put the Node on the object stack (Contains the ACPI Name of
* this object)
*/
walk_state->operands[0] = (void *)node;
walk_state->num_operands = 1;
/* Pop the scope stack */
if (acpi_ns_opens_scope(object_type) &&
(op->common.aml_opcode != AML_INT_METHODCALL_OP)) {
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"(%s) Popping scope for Op %p\n",
acpi_ut_get_type_name(object_type), op));
status = acpi_ds_scope_stack_pop(walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
}
/*
* Named operations are as follows:
*
* AML_ALIAS
* AML_BANKFIELD
* AML_CREATEBITFIELD
* AML_CREATEBYTEFIELD
* AML_CREATEDWORDFIELD
* AML_CREATEFIELD
* AML_CREATEQWORDFIELD
* AML_CREATEWORDFIELD
* AML_DATA_REGION
* AML_DEVICE
* AML_EVENT
* AML_FIELD
* AML_INDEXFIELD
* AML_METHOD
* AML_METHODCALL
* AML_MUTEX
* AML_NAME
* AML_NAMEDFIELD
* AML_OPREGION
* AML_POWERRES
* AML_PROCESSOR
* AML_SCOPE
* AML_THERMALZONE
*/
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
acpi_ps_get_opcode_name(op->common.aml_opcode),
walk_state, op, node));
/* Decode the opcode */
arg = op->common.value.arg;
switch (walk_state->op_info->type) {
case AML_TYPE_CREATE_FIELD:
/*
* Create the field object, but the field buffer and index must
* be evaluated later during the execution phase
*/
status = acpi_ds_create_buffer_field(op, walk_state);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"CreateBufferField failure"));
goto cleanup;
}
break;
case AML_TYPE_NAMED_FIELD:
/*
* If we are executing a method, initialize the field
*/
if (walk_state->method_node) {
status = acpi_ds_init_field_objects(op, walk_state);
}
switch (op->common.aml_opcode) {
case AML_INDEX_FIELD_OP:
status =
acpi_ds_create_index_field(op,
(acpi_handle)arg->common.
node, walk_state);
break;
case AML_BANK_FIELD_OP:
status =
acpi_ds_create_bank_field(op, arg->common.node,
walk_state);
break;
case AML_FIELD_OP:
status =
acpi_ds_create_field(op, arg->common.node,
walk_state);
break;
default:
/* All NAMED_FIELD opcodes must be handled above */
break;
}
break;
case AML_TYPE_NAMED_SIMPLE:
status = acpi_ds_create_operands(walk_state, arg);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
switch (op->common.aml_opcode) {
case AML_PROCESSOR_OP:
status = acpi_ex_create_processor(walk_state);
break;
case AML_POWER_RESOURCE_OP:
status = acpi_ex_create_power_resource(walk_state);
break;
case AML_MUTEX_OP:
status = acpi_ex_create_mutex(walk_state);
break;
case AML_EVENT_OP:
status = acpi_ex_create_event(walk_state);
break;
case AML_ALIAS_OP:
status = acpi_ex_create_alias(walk_state);
break;
default:
/* Unknown opcode */
status = AE_OK;
goto cleanup;
}
/* Delete operands */
for (i = 1; i < walk_state->num_operands; i++) {
acpi_ut_remove_reference(walk_state->operands[i]);
walk_state->operands[i] = NULL;
}
break;
case AML_TYPE_NAMED_COMPLEX:
switch (op->common.aml_opcode) {
case AML_REGION_OP:
case AML_DATA_REGION_OP:
if (op->common.aml_opcode == AML_REGION_OP) {
region_space = (acpi_adr_space_type)
((op->common.value.arg)->common.value.
integer);
} else {
region_space = ACPI_ADR_SPACE_DATA_TABLE;
}
/*
* The op_region is not fully parsed at this time. The only valid
* argument is the space_id. (We must save the address of the
* AML of the address and length operands)
*
* If we have a valid region, initialize it. The namespace is
* unlocked at this point.
*
* Need to unlock interpreter if it is locked (if we are running
* a control method), in order to allow _REG methods to be run
* during acpi_ev_initialize_region.
*/
if (walk_state->method_node) {
/*
* Executing a method: initialize the region and unlock
* the interpreter
*/
status = acpi_ex_create_region(op->named.data,
op->named.length,
region_space,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
status =
acpi_ev_initialize_region
(acpi_ns_get_attached_object(node));
break;
case AML_NAME_OP:
status = acpi_ds_create_node(walk_state, node, op);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
#ifdef ACPI_EXEC_APP
/*
* acpi_exec support for namespace initialization file (initialize
* Name opcodes in this code.)
*/
namepath = acpi_ns_get_external_pathname(node);
status = ae_lookup_init_file_entry(namepath, &obj_desc);
if (ACPI_SUCCESS(status)) {
/* Detach any existing object, attach new object */
if (node->object) {
acpi_ns_detach_object(node);
}
acpi_ns_attach_object(node, obj_desc,
obj_desc->common.type);
}
ACPI_FREE(namepath);
status = AE_OK;
#endif
break;
case AML_METHOD_OP:
/*
* method_op pkg_length name_string method_flags term_list
*
* Note: We must create the method node/object pair as soon as we
* see the method declaration. This allows later pass1 parsing
* of invocations of the method (need to know the number of
* arguments.)
*/
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"LOADING-Method: State=%p Op=%p NamedObj=%p\n",
walk_state, op, op->named.node));
if (!acpi_ns_get_attached_object(op->named.node)) {
walk_state->operands[0] =
ACPI_CAST_PTR(void, op->named.node);
walk_state->num_operands = 1;
status =
acpi_ds_create_operands(walk_state,
op->common.value.
arg);
if (ACPI_SUCCESS(status)) {
status =
acpi_ex_create_method(op->named.
data,
op->named.
length,
walk_state);
}
walk_state->operands[0] = NULL;
walk_state->num_operands = 0;
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
break;
default:
/* All NAMED_COMPLEX opcodes must be handled above */
break;
}
break;
case AML_CLASS_INTERNAL:
/* case AML_INT_NAMEPATH_OP: */
break;
case AML_CLASS_METHOD_CALL:
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
walk_state, op, node));
/*
* Lookup the method name and save the Node
*/
status =
acpi_ns_lookup(walk_state->scope_info,
arg->common.value.string, ACPI_TYPE_ANY,
ACPI_IMODE_LOAD_PASS2,
ACPI_NS_SEARCH_PARENT |
ACPI_NS_DONT_OPEN_SCOPE, walk_state,
&(new_node));
if (ACPI_SUCCESS(status)) {
/*
* Make sure that what we found is indeed a method
* We didn't search for a method on purpose, to see if the name
* would resolve
*/
if (new_node->type != ACPI_TYPE_METHOD) {
status = AE_AML_OPERAND_TYPE;
}
/* We could put the returned object (Node) on the object stack for
* later, but for now, we will put it in the "op" object that the
* parser uses, so we can get it again at the end of this scope
*/
op->common.node = new_node;
} else {
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
arg->common.value.string, status);
}
break;
default:
break;
}
cleanup:
/* Remove the Node pushed at the very beginning */
walk_state->operands[0] = NULL;
walk_state->num_operands = 0;
return_ACPI_STATUS(status);
}
| linux-master | drivers/acpi/acpica/dswload2.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: dsmthdat - control method arguments and local variables
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdispat.h"
#include "acnamesp.h"
#include "acinterp.h"
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dsmthdat")
/* Local prototypes */
static void
acpi_ds_method_data_delete_value(u8 type,
u32 index, struct acpi_walk_state *walk_state);
static acpi_status
acpi_ds_method_data_set_value(u8 type,
u32 index,
union acpi_operand_object *object,
struct acpi_walk_state *walk_state);
#ifdef ACPI_OBSOLETE_FUNCTIONS
acpi_object_type
acpi_ds_method_data_get_type(u16 opcode,
u32 index, struct acpi_walk_state *walk_state);
#endif
/*******************************************************************************
*
* FUNCTION: acpi_ds_method_data_init
*
* PARAMETERS: walk_state - Current walk state object
*
* RETURN: Status
*
* DESCRIPTION: Initialize the data structures that hold the method's arguments
* and locals. The data struct is an array of namespace nodes for
* each - this allows ref_of and de_ref_of to work properly for these
* special data types.
*
* NOTES: walk_state fields are initialized to zero by the
* ACPI_ALLOCATE_ZEROED().
*
* A pseudo-Namespace Node is assigned to each argument and local
* so that ref_of() can return a pointer to the Node.
*
******************************************************************************/
void acpi_ds_method_data_init(struct acpi_walk_state *walk_state)
{
u32 i;
ACPI_FUNCTION_TRACE(ds_method_data_init);
/* Init the method arguments */
for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++) {
ACPI_MOVE_32_TO_32(&walk_state->arguments[i].name,
NAMEOF_ARG_NTE);
walk_state->arguments[i].name.integer |= (i << 24);
walk_state->arguments[i].descriptor_type = ACPI_DESC_TYPE_NAMED;
walk_state->arguments[i].type = ACPI_TYPE_ANY;
walk_state->arguments[i].flags = ANOBJ_METHOD_ARG;
}
/* Init the method locals */
for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++) {
ACPI_MOVE_32_TO_32(&walk_state->local_variables[i].name,
NAMEOF_LOCAL_NTE);
walk_state->local_variables[i].name.integer |= (i << 24);
walk_state->local_variables[i].descriptor_type =
ACPI_DESC_TYPE_NAMED;
walk_state->local_variables[i].type = ACPI_TYPE_ANY;
walk_state->local_variables[i].flags = ANOBJ_METHOD_LOCAL;
}
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_method_data_delete_all
*
* PARAMETERS: walk_state - Current walk state object
*
* RETURN: None
*
* DESCRIPTION: Delete method locals and arguments. Arguments are only
* deleted if this method was called from another method.
*
******************************************************************************/
void acpi_ds_method_data_delete_all(struct acpi_walk_state *walk_state)
{
u32 index;
ACPI_FUNCTION_TRACE(ds_method_data_delete_all);
/* Detach the locals */
for (index = 0; index < ACPI_METHOD_NUM_LOCALS; index++) {
if (walk_state->local_variables[index].object) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Deleting Local%u=%p\n",
index,
walk_state->local_variables[index].
object));
/* Detach object (if present) and remove a reference */
acpi_ns_detach_object(&walk_state->
local_variables[index]);
}
}
/* Detach the arguments */
for (index = 0; index < ACPI_METHOD_NUM_ARGS; index++) {
if (walk_state->arguments[index].object) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Deleting Arg%u=%p\n",
index,
walk_state->arguments[index].object));
/* Detach object (if present) and remove a reference */
acpi_ns_detach_object(&walk_state->arguments[index]);
}
}
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_method_data_init_args
*
* PARAMETERS: *params - Pointer to a parameter list for the method
* max_param_count - The arg count for this method
* walk_state - Current walk state object
*
* RETURN: Status
*
* DESCRIPTION: Initialize arguments for a method. The parameter list is a list
* of ACPI operand objects, either null terminated or whose length
* is defined by max_param_count.
*
******************************************************************************/
acpi_status
acpi_ds_method_data_init_args(union acpi_operand_object **params,
u32 max_param_count,
struct acpi_walk_state *walk_state)
{
acpi_status status;
u32 index = 0;
ACPI_FUNCTION_TRACE_PTR(ds_method_data_init_args, params);
if (!params) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"No parameter list passed to method\n"));
return_ACPI_STATUS(AE_OK);
}
/* Copy passed parameters into the new method stack frame */
while ((index < ACPI_METHOD_NUM_ARGS) &&
(index < max_param_count) && params[index]) {
/*
* A valid parameter.
* Store the argument in the method/walk descriptor.
* Do not copy the arg in order to implement call by reference
*/
status =
acpi_ds_method_data_set_value(ACPI_REFCLASS_ARG, index,
params[index], walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
index++;
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%u args passed to method\n", index));
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_method_data_get_node
*
* PARAMETERS: type - Either ACPI_REFCLASS_LOCAL or
* ACPI_REFCLASS_ARG
* index - Which Local or Arg whose type to get
* walk_state - Current walk state object
* node - Where the node is returned.
*
* RETURN: Status and node
*
* DESCRIPTION: Get the Node associated with a local or arg.
*
******************************************************************************/
acpi_status
acpi_ds_method_data_get_node(u8 type,
u32 index,
struct acpi_walk_state *walk_state,
struct acpi_namespace_node **node)
{
ACPI_FUNCTION_TRACE(ds_method_data_get_node);
/*
* Method Locals and Arguments are supported
*/
switch (type) {
case ACPI_REFCLASS_LOCAL:
if (index > ACPI_METHOD_MAX_LOCAL) {
ACPI_ERROR((AE_INFO,
"Local index %u is invalid (max %u)",
index, ACPI_METHOD_MAX_LOCAL));
return_ACPI_STATUS(AE_AML_INVALID_INDEX);
}
/* Return a pointer to the pseudo-node */
*node = &walk_state->local_variables[index];
break;
case ACPI_REFCLASS_ARG:
if (index > ACPI_METHOD_MAX_ARG) {
ACPI_ERROR((AE_INFO,
"Arg index %u is invalid (max %u)",
index, ACPI_METHOD_MAX_ARG));
return_ACPI_STATUS(AE_AML_INVALID_INDEX);
}
/* Return a pointer to the pseudo-node */
*node = &walk_state->arguments[index];
break;
default:
ACPI_ERROR((AE_INFO, "Type %u is invalid", type));
return_ACPI_STATUS(AE_TYPE);
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_method_data_set_value
*
* PARAMETERS: type - Either ACPI_REFCLASS_LOCAL or
* ACPI_REFCLASS_ARG
* index - Which Local or Arg to get
* object - Object to be inserted into the stack entry
* walk_state - Current walk state object
*
* RETURN: Status
*
* DESCRIPTION: Insert an object onto the method stack at entry Opcode:Index.
* Note: There is no "implicit conversion" for locals.
*
******************************************************************************/
static acpi_status
acpi_ds_method_data_set_value(u8 type,
u32 index,
union acpi_operand_object *object,
struct acpi_walk_state *walk_state)
{
acpi_status status;
struct acpi_namespace_node *node;
ACPI_FUNCTION_TRACE(ds_method_data_set_value);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"NewObj %p Type %2.2X, Refs=%u [%s]\n", object,
type, object->common.reference_count,
acpi_ut_get_type_name(object->common.type)));
/* Get the namespace node for the arg/local */
status = acpi_ds_method_data_get_node(type, index, walk_state, &node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Increment ref count so object can't be deleted while installed.
* NOTE: We do not copy the object in order to preserve the call by
* reference semantics of ACPI Control Method invocation.
* (See ACPI Specification 2.0C)
*/
acpi_ut_add_reference(object);
/* Install the object */
node->object = object;
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_method_data_get_value
*
* PARAMETERS: type - Either ACPI_REFCLASS_LOCAL or
* ACPI_REFCLASS_ARG
* index - Which localVar or argument to get
* walk_state - Current walk state object
* dest_desc - Where Arg or Local value is returned
*
* RETURN: Status
*
* DESCRIPTION: Retrieve value of selected Arg or Local for this method
* Used only in acpi_ex_resolve_to_value().
*
******************************************************************************/
acpi_status
acpi_ds_method_data_get_value(u8 type,
u32 index,
struct acpi_walk_state *walk_state,
union acpi_operand_object **dest_desc)
{
acpi_status status;
struct acpi_namespace_node *node;
union acpi_operand_object *object;
ACPI_FUNCTION_TRACE(ds_method_data_get_value);
/* Validate the object descriptor */
if (!dest_desc) {
ACPI_ERROR((AE_INFO, "Null object descriptor pointer"));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Get the namespace node for the arg/local */
status = acpi_ds_method_data_get_node(type, index, walk_state, &node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Get the object from the node */
object = node->object;
/* Examine the returned object, it must be valid. */
if (!object) {
/*
* Index points to uninitialized object.
* This means that either 1) The expected argument was
* not passed to the method, or 2) A local variable
* was referenced by the method (via the ASL)
* before it was initialized. Either case is an error.
*/
/* If slack enabled, init the local_x/arg_x to an Integer of value zero */
if (acpi_gbl_enable_interpreter_slack) {
object = acpi_ut_create_integer_object((u64) 0);
if (!object) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
node->object = object;
}
/* Otherwise, return the error */
else
switch (type) {
case ACPI_REFCLASS_ARG:
ACPI_ERROR((AE_INFO,
"Uninitialized Arg[%u] at node %p",
index, node));
return_ACPI_STATUS(AE_AML_UNINITIALIZED_ARG);
case ACPI_REFCLASS_LOCAL:
/*
* No error message for this case, will be trapped again later to
* detect and ignore cases of Store(local_x,local_x)
*/
return_ACPI_STATUS(AE_AML_UNINITIALIZED_LOCAL);
default:
ACPI_ERROR((AE_INFO,
"Not a Arg/Local opcode: 0x%X",
type));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
}
/*
* The Index points to an initialized and valid object.
* Return an additional reference to the object
*/
*dest_desc = object;
acpi_ut_add_reference(object);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_method_data_delete_value
*
* PARAMETERS: type - Either ACPI_REFCLASS_LOCAL or
* ACPI_REFCLASS_ARG
* index - Which localVar or argument to delete
* walk_state - Current walk state object
*
* RETURN: None
*
* DESCRIPTION: Delete the entry at Opcode:Index. Inserts
* a null into the stack slot after the object is deleted.
*
******************************************************************************/
static void
acpi_ds_method_data_delete_value(u8 type,
u32 index, struct acpi_walk_state *walk_state)
{
acpi_status status;
struct acpi_namespace_node *node;
union acpi_operand_object *object;
ACPI_FUNCTION_TRACE(ds_method_data_delete_value);
/* Get the namespace node for the arg/local */
status = acpi_ds_method_data_get_node(type, index, walk_state, &node);
if (ACPI_FAILURE(status)) {
return_VOID;
}
/* Get the associated object */
object = acpi_ns_get_attached_object(node);
/*
* Undefine the Arg or Local by setting its descriptor
* pointer to NULL. Locals/Args can contain both
* ACPI_OPERAND_OBJECTS and ACPI_NAMESPACE_NODEs
*/
node->object = NULL;
if ((object) &&
(ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_OPERAND)) {
/*
* There is a valid object.
* Decrement the reference count by one to balance the
* increment when the object was stored.
*/
acpi_ut_remove_reference(object);
}
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_store_object_to_local
*
* PARAMETERS: type - Either ACPI_REFCLASS_LOCAL or
* ACPI_REFCLASS_ARG
* index - Which Local or Arg to set
* obj_desc - Value to be stored
* walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Store a value in an Arg or Local. The obj_desc is installed
* as the new value for the Arg or Local and the reference count
* for obj_desc is incremented.
*
******************************************************************************/
acpi_status
acpi_ds_store_object_to_local(u8 type,
u32 index,
union acpi_operand_object *obj_desc,
struct acpi_walk_state *walk_state)
{
acpi_status status;
struct acpi_namespace_node *node;
union acpi_operand_object *current_obj_desc;
union acpi_operand_object *new_obj_desc;
ACPI_FUNCTION_TRACE(ds_store_object_to_local);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Type=%2.2X Index=%u Obj=%p\n",
type, index, obj_desc));
/* Parameter validation */
if (!obj_desc) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Get the namespace node for the arg/local */
status = acpi_ds_method_data_get_node(type, index, walk_state, &node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
current_obj_desc = acpi_ns_get_attached_object(node);
if (current_obj_desc == obj_desc) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Obj=%p already installed!\n",
obj_desc));
return_ACPI_STATUS(status);
}
/*
* If the reference count on the object is more than one, we must
* take a copy of the object before we store. A reference count
* of exactly 1 means that the object was just created during the
* evaluation of an expression, and we can safely use it since it
* is not used anywhere else.
*/
new_obj_desc = obj_desc;
if (obj_desc->common.reference_count > 1) {
status =
acpi_ut_copy_iobject_to_iobject(obj_desc, &new_obj_desc,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/*
* If there is an object already in this slot, we either
* have to delete it, or if this is an argument and there
* is an object reference stored there, we have to do
* an indirect store!
*/
if (current_obj_desc) {
/*
* Check for an indirect store if an argument
* contains an object reference (stored as an Node).
* We don't allow this automatic dereferencing for
* locals, since a store to a local should overwrite
* anything there, including an object reference.
*
* If both Arg0 and Local0 contain ref_of (Local4):
*
* Store (1, Arg0) - Causes indirect store to local4
* Store (1, Local0) - Stores 1 in local0, overwriting
* the reference to local4
* Store (1, de_refof (Local0)) - Causes indirect store to local4
*
* Weird, but true.
*/
if (type == ACPI_REFCLASS_ARG) {
/*
* If we have a valid reference object that came from ref_of(),
* do the indirect store
*/
if ((ACPI_GET_DESCRIPTOR_TYPE(current_obj_desc) ==
ACPI_DESC_TYPE_OPERAND) &&
(current_obj_desc->common.type ==
ACPI_TYPE_LOCAL_REFERENCE) &&
(current_obj_desc->reference.class ==
ACPI_REFCLASS_REFOF)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Arg (%p) is an ObjRef(Node), storing in node %p\n",
new_obj_desc,
current_obj_desc));
/*
* Store this object to the Node (perform the indirect store)
* NOTE: No implicit conversion is performed, as per the ACPI
* specification rules on storing to Locals/Args.
*/
status =
acpi_ex_store_object_to_node(new_obj_desc,
current_obj_desc->
reference.
object,
walk_state,
ACPI_NO_IMPLICIT_CONVERSION);
/* Remove local reference if we copied the object above */
if (new_obj_desc != obj_desc) {
acpi_ut_remove_reference(new_obj_desc);
}
return_ACPI_STATUS(status);
}
}
/* Delete the existing object before storing the new one */
acpi_ds_method_data_delete_value(type, index, walk_state);
}
/*
* Install the Obj descriptor (*new_obj_desc) into
* the descriptor for the Arg or Local.
* (increments the object reference count by one)
*/
status =
acpi_ds_method_data_set_value(type, index, new_obj_desc,
walk_state);
/* Remove local reference if we copied the object above */
if (new_obj_desc != obj_desc) {
acpi_ut_remove_reference(new_obj_desc);
}
return_ACPI_STATUS(status);
}
#ifdef ACPI_OBSOLETE_FUNCTIONS
/*******************************************************************************
*
* FUNCTION: acpi_ds_method_data_get_type
*
* PARAMETERS: opcode - Either AML_FIRST LOCAL_OP or
* AML_FIRST_ARG_OP
* index - Which Local or Arg whose type to get
* walk_state - Current walk state object
*
* RETURN: Data type of current value of the selected Arg or Local
*
* DESCRIPTION: Get the type of the object stored in the Local or Arg
*
******************************************************************************/
acpi_object_type
acpi_ds_method_data_get_type(u16 opcode,
u32 index, struct acpi_walk_state *walk_state)
{
acpi_status status;
struct acpi_namespace_node *node;
union acpi_operand_object *object;
ACPI_FUNCTION_TRACE(ds_method_data_get_type);
/* Get the namespace node for the arg/local */
status = acpi_ds_method_data_get_node(opcode, index, walk_state, &node);
if (ACPI_FAILURE(status)) {
return_VALUE((ACPI_TYPE_NOT_FOUND));
}
/* Get the object */
object = acpi_ns_get_attached_object(node);
if (!object) {
/* Uninitialized local/arg, return TYPE_ANY */
return_VALUE(ACPI_TYPE_ANY);
}
/* Get the object type */
return_VALUE(object->type);
}
#endif
| linux-master | drivers/acpi/acpica/dsmthdat.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: nsload - namespace loading/expanding/contracting procedures
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acdispat.h"
#include "actables.h"
#include "acinterp.h"
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsload")
/* Local prototypes */
#ifdef ACPI_FUTURE_IMPLEMENTATION
acpi_status acpi_ns_unload_namespace(acpi_handle handle);
static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle);
#endif
/*******************************************************************************
*
* FUNCTION: acpi_ns_load_table
*
* PARAMETERS: table_index - Index for table to be loaded
* node - Owning NS node
*
* RETURN: Status
*
* DESCRIPTION: Load one ACPI table into the namespace
*
******************************************************************************/
acpi_status
acpi_ns_load_table(u32 table_index, struct acpi_namespace_node *node)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ns_load_table);
/* If table already loaded into namespace, just return */
if (acpi_tb_is_table_loaded(table_index)) {
status = AE_ALREADY_EXISTS;
goto unlock;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Loading table into namespace ****\n"));
status = acpi_tb_allocate_owner_id(table_index);
if (ACPI_FAILURE(status)) {
goto unlock;
}
/*
* Parse the table and load the namespace with all named
* objects found within. Control methods are NOT parsed
* at this time. In fact, the control methods cannot be
* parsed until the entire namespace is loaded, because
* if a control method makes a forward reference (call)
* to another control method, we can't continue parsing
* because we don't know how many arguments to parse next!
*/
status = acpi_ns_parse_table(table_index, node);
if (ACPI_SUCCESS(status)) {
acpi_tb_set_table_loaded_flag(table_index, TRUE);
} else {
/*
* On error, delete any namespace objects created by this table.
* We cannot initialize these objects, so delete them. There are
* a couple of especially bad cases:
* AE_ALREADY_EXISTS - namespace collision.
* AE_NOT_FOUND - the target of a Scope operator does not
* exist. This target of Scope must already exist in the
* namespace, as per the ACPI specification.
*/
acpi_ns_delete_namespace_by_owner(acpi_gbl_root_table_list.
tables[table_index].owner_id);
acpi_tb_release_owner_id(table_index);
return_ACPI_STATUS(status);
}
unlock:
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Now we can parse the control methods. We always parse
* them here for a sanity check, and if configured for
* just-in-time parsing, we delete the control method
* parse trees.
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Begin Table Object Initialization\n"));
acpi_ex_enter_interpreter();
status = acpi_ds_initialize_objects(table_index, node);
acpi_ex_exit_interpreter();
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"**** Completed Table Object Initialization\n"));
return_ACPI_STATUS(status);
}
#ifdef ACPI_OBSOLETE_FUNCTIONS
/*******************************************************************************
*
* FUNCTION: acpi_load_namespace
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Load the name space from what ever is pointed to by DSDT.
* (DSDT points to either the BIOS or a buffer.)
*
******************************************************************************/
acpi_status acpi_ns_load_namespace(void)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_load_name_space);
/* There must be at least a DSDT installed */
if (acpi_gbl_DSDT == NULL) {
ACPI_ERROR((AE_INFO, "DSDT is not in memory"));
return_ACPI_STATUS(AE_NO_ACPI_TABLES);
}
/*
* Load the namespace. The DSDT is required,
* but the SSDT and PSDT tables are optional.
*/
status = acpi_ns_load_table_by_type(ACPI_TABLE_ID_DSDT);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Ignore exceptions from these */
(void)acpi_ns_load_table_by_type(ACPI_TABLE_ID_SSDT);
(void)acpi_ns_load_table_by_type(ACPI_TABLE_ID_PSDT);
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
"ACPI Namespace successfully loaded at root %p\n",
acpi_gbl_root_node));
return_ACPI_STATUS(status);
}
#endif
#ifdef ACPI_FUTURE_IMPLEMENTATION
/*******************************************************************************
*
* FUNCTION: acpi_ns_delete_subtree
*
* PARAMETERS: start_handle - Handle in namespace where search begins
*
* RETURNS Status
*
* DESCRIPTION: Walks the namespace starting at the given handle and deletes
* all objects, entries, and scopes in the entire subtree.
*
* Namespace/Interpreter should be locked or the subsystem should
* be in shutdown before this routine is called.
*
******************************************************************************/
static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle)
{
acpi_status status;
acpi_handle child_handle;
acpi_handle parent_handle;
acpi_handle next_child_handle;
acpi_handle dummy;
u32 level;
ACPI_FUNCTION_TRACE(ns_delete_subtree);
parent_handle = start_handle;
child_handle = NULL;
level = 1;
/*
* Traverse the tree of objects until we bubble back up
* to where we started.
*/
while (level > 0) {
/* Attempt to get the next object in this scope */
status = acpi_get_next_object(ACPI_TYPE_ANY, parent_handle,
child_handle, &next_child_handle);
child_handle = next_child_handle;
/* Did we get a new object? */
if (ACPI_SUCCESS(status)) {
/* Check if this object has any children */
if (ACPI_SUCCESS
(acpi_get_next_object
(ACPI_TYPE_ANY, child_handle, NULL, &dummy))) {
/*
* There is at least one child of this object,
* visit the object
*/
level++;
parent_handle = child_handle;
child_handle = NULL;
}
} else {
/*
* No more children in this object, go back up to
* the object's parent
*/
level--;
/* Delete all children now */
acpi_ns_delete_children(child_handle);
child_handle = parent_handle;
status = acpi_get_parent(parent_handle, &parent_handle);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
}
/* Now delete the starting object, and we are done */
acpi_ns_remove_node(child_handle);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_unload_name_space
*
* PARAMETERS: handle - Root of namespace subtree to be deleted
*
* RETURN: Status
*
* DESCRIPTION: Shrinks the namespace, typically in response to an undocking
* event. Deletes an entire subtree starting from (and
* including) the given handle.
*
******************************************************************************/
acpi_status acpi_ns_unload_namespace(acpi_handle handle)
{
acpi_status status;
ACPI_FUNCTION_TRACE(ns_unload_name_space);
/* Parameter validation */
if (!acpi_gbl_root_node) {
return_ACPI_STATUS(AE_NO_NAMESPACE);
}
if (!handle) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* This function does the real work */
status = acpi_ns_delete_subtree(handle);
return_ACPI_STATUS(status);
}
#endif
| linux-master | drivers/acpi/acpica/nsload.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: utascii - Utility ascii functions
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
/*******************************************************************************
*
* FUNCTION: acpi_ut_valid_nameseg
*
* PARAMETERS: name - The name or table signature to be examined.
* Four characters, does not have to be a
* NULL terminated string.
*
* RETURN: TRUE if signature is has 4 valid ACPI characters
*
* DESCRIPTION: Validate an ACPI table signature.
*
******************************************************************************/
u8 acpi_ut_valid_nameseg(char *name)
{
u32 i;
/* Validate each character in the signature */
for (i = 0; i < ACPI_NAMESEG_SIZE; i++) {
if (!acpi_ut_valid_name_char(name[i], i)) {
return (FALSE);
}
}
return (TRUE);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_valid_name_char
*
* PARAMETERS: char - The character to be examined
* position - Byte position (0-3)
*
* RETURN: TRUE if the character is valid, FALSE otherwise
*
* DESCRIPTION: Check for a valid ACPI character. Must be one of:
* 1) Upper case alpha
* 2) numeric
* 3) underscore
*
* We allow a '!' as the last character because of the ASF! table
*
******************************************************************************/
u8 acpi_ut_valid_name_char(char character, u32 position)
{
if (!((character >= 'A' && character <= 'Z') ||
(character >= '0' && character <= '9') || (character == '_'))) {
/* Allow a '!' in the last position */
if (character == '!' && position == 3) {
return (TRUE);
}
return (FALSE);
}
return (TRUE);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_check_and_repair_ascii
*
* PARAMETERS: name - Ascii string
* count - Number of characters to check
*
* RETURN: None
*
* DESCRIPTION: Ensure that the requested number of characters are printable
* Ascii characters. Sets non-printable and null chars to <space>.
*
******************************************************************************/
void acpi_ut_check_and_repair_ascii(u8 *name, char *repaired_name, u32 count)
{
u32 i;
for (i = 0; i < count; i++) {
repaired_name[i] = (char)name[i];
if (!name[i]) {
return;
}
if (!isprint(name[i])) {
repaired_name[i] = ' ';
}
}
}
| linux-master | drivers/acpi/acpica/utascii.c |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: dswstate - Dispatcher parse tree walk management routines
*
* Copyright (C) 2000 - 2023, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "acdispat.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dswstate")
/* Local prototypes */
static acpi_status
acpi_ds_result_stack_push(struct acpi_walk_state *walk_state);
static acpi_status acpi_ds_result_stack_pop(struct acpi_walk_state *walk_state);
/*******************************************************************************
*
* FUNCTION: acpi_ds_result_pop
*
* PARAMETERS: object - Where to return the popped object
* walk_state - Current Walk state
*
* RETURN: Status
*
* DESCRIPTION: Pop an object off the top of this walk's result stack
*
******************************************************************************/
acpi_status
acpi_ds_result_pop(union acpi_operand_object **object,
struct acpi_walk_state *walk_state)
{
u32 index;
union acpi_generic_state *state;
acpi_status status;
ACPI_FUNCTION_NAME(ds_result_pop);
state = walk_state->results;
/* Incorrect state of result stack */
if (state && !walk_state->result_count) {
ACPI_ERROR((AE_INFO, "No results on result stack"));
return (AE_AML_INTERNAL);
}
if (!state && walk_state->result_count) {
ACPI_ERROR((AE_INFO, "No result state for result stack"));
return (AE_AML_INTERNAL);
}
/* Empty result stack */
if (!state) {
ACPI_ERROR((AE_INFO, "Result stack is empty! State=%p",
walk_state));
return (AE_AML_NO_RETURN_VALUE);
}
/* Return object of the top element and clean that top element result stack */
walk_state->result_count--;
index = (u32)walk_state->result_count % ACPI_RESULTS_FRAME_OBJ_NUM;
*object = state->results.obj_desc[index];
if (!*object) {
ACPI_ERROR((AE_INFO,
"No result objects on result stack, State=%p",
walk_state));
return (AE_AML_NO_RETURN_VALUE);
}
state->results.obj_desc[index] = NULL;
if (index == 0) {
status = acpi_ds_result_stack_pop(walk_state);
if (ACPI_FAILURE(status)) {
return (status);
}
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Obj=%p [%s] Index=%X State=%p Num=%X\n", *object,
acpi_ut_get_object_type_name(*object),
index, walk_state, walk_state->result_count));
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_result_push
*
* PARAMETERS: object - Where to return the popped object
* walk_state - Current Walk state
*
* RETURN: Status
*
* DESCRIPTION: Push an object onto the current result stack
*
******************************************************************************/
acpi_status
acpi_ds_result_push(union acpi_operand_object *object,
struct acpi_walk_state *walk_state)
{
union acpi_generic_state *state;
acpi_status status;
u32 index;
ACPI_FUNCTION_NAME(ds_result_push);
if (walk_state->result_count > walk_state->result_size) {
ACPI_ERROR((AE_INFO, "Result stack is full"));
return (AE_AML_INTERNAL);
} else if (walk_state->result_count == walk_state->result_size) {
/* Extend the result stack */
status = acpi_ds_result_stack_push(walk_state);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO,
"Failed to extend the result stack"));
return (status);
}
}
if (!(walk_state->result_count < walk_state->result_size)) {
ACPI_ERROR((AE_INFO, "No free elements in result stack"));
return (AE_AML_INTERNAL);
}
state = walk_state->results;
if (!state) {
ACPI_ERROR((AE_INFO, "No result stack frame during push"));
return (AE_AML_INTERNAL);
}
if (!object) {
ACPI_ERROR((AE_INFO,
"Null Object! State=%p Num=%u",
walk_state, walk_state->result_count));
return (AE_BAD_PARAMETER);
}
/* Assign the address of object to the top free element of result stack */
index = (u32)walk_state->result_count % ACPI_RESULTS_FRAME_OBJ_NUM;
state->results.obj_desc[index] = object;
walk_state->result_count++;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Obj=%p [%s] State=%p Num=%X Cur=%X\n",
object,
acpi_ut_get_object_type_name((union
acpi_operand_object *)
object), walk_state,
walk_state->result_count,
walk_state->current_result));
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_result_stack_push
*
* PARAMETERS: walk_state - Current Walk state
*
* RETURN: Status
*
* DESCRIPTION: Push an object onto the walk_state result stack
*
******************************************************************************/
static acpi_status acpi_ds_result_stack_push(struct acpi_walk_state *walk_state)
{
union acpi_generic_state *state;
ACPI_FUNCTION_NAME(ds_result_stack_push);
/* Check for stack overflow */
if (((u32) walk_state->result_size + ACPI_RESULTS_FRAME_OBJ_NUM) >
ACPI_RESULTS_OBJ_NUM_MAX) {
ACPI_ERROR((AE_INFO, "Result stack overflow: State=%p Num=%u",
walk_state, walk_state->result_size));
return (AE_STACK_OVERFLOW);
}
state = acpi_ut_create_generic_state();
if (!state) {
return (AE_NO_MEMORY);
}
state->common.descriptor_type = ACPI_DESC_TYPE_STATE_RESULT;
acpi_ut_push_generic_state(&walk_state->results, state);
/* Increase the length of the result stack by the length of frame */
walk_state->result_size += ACPI_RESULTS_FRAME_OBJ_NUM;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Results=%p State=%p\n",
state, walk_state));
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_result_stack_pop
*
* PARAMETERS: walk_state - Current Walk state
*
* RETURN: Status
*
* DESCRIPTION: Pop an object off of the walk_state result stack
*
******************************************************************************/
static acpi_status acpi_ds_result_stack_pop(struct acpi_walk_state *walk_state)
{
union acpi_generic_state *state;
ACPI_FUNCTION_NAME(ds_result_stack_pop);
/* Check for stack underflow */
if (walk_state->results == NULL) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Result stack underflow - State=%p\n",
walk_state));
return (AE_AML_NO_OPERAND);
}
if (walk_state->result_size < ACPI_RESULTS_FRAME_OBJ_NUM) {
ACPI_ERROR((AE_INFO, "Insufficient result stack size"));
return (AE_AML_INTERNAL);
}
state = acpi_ut_pop_generic_state(&walk_state->results);
acpi_ut_delete_generic_state(state);
/* Decrease the length of result stack by the length of frame */
walk_state->result_size -= ACPI_RESULTS_FRAME_OBJ_NUM;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Result=%p RemainingResults=%X State=%p\n",
state, walk_state->result_count, walk_state));
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_obj_stack_push
*
* PARAMETERS: object - Object to push
* walk_state - Current Walk state
*
* RETURN: Status
*
* DESCRIPTION: Push an object onto this walk's object/operand stack
*
******************************************************************************/
acpi_status
acpi_ds_obj_stack_push(void *object, struct acpi_walk_state *walk_state)
{
ACPI_FUNCTION_NAME(ds_obj_stack_push);
/* Check for stack overflow */
if (walk_state->num_operands >= ACPI_OBJ_NUM_OPERANDS) {
ACPI_ERROR((AE_INFO,
"Object stack overflow! Obj=%p State=%p #Ops=%u",
object, walk_state, walk_state->num_operands));
return (AE_STACK_OVERFLOW);
}
/* Put the object onto the stack */
walk_state->operands[walk_state->operand_index] = object;
walk_state->num_operands++;
/* For the usual order of filling the operand stack */
walk_state->operand_index++;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Obj=%p [%s] State=%p #Ops=%X\n",
object,
acpi_ut_get_object_type_name((union
acpi_operand_object *)
object), walk_state,
walk_state->num_operands));
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_obj_stack_pop
*
* PARAMETERS: pop_count - Number of objects/entries to pop
* walk_state - Current Walk state
*
* RETURN: Status
*
* DESCRIPTION: Pop this walk's object stack. Objects on the stack are NOT
* deleted by this routine.
*
******************************************************************************/
acpi_status
acpi_ds_obj_stack_pop(u32 pop_count, struct acpi_walk_state *walk_state)
{
u32 i;
ACPI_FUNCTION_NAME(ds_obj_stack_pop);
for (i = 0; i < pop_count; i++) {
/* Check for stack underflow */
if (walk_state->num_operands == 0) {
ACPI_ERROR((AE_INFO,
"Object stack underflow! Count=%X State=%p #Ops=%u",
pop_count, walk_state,
walk_state->num_operands));
return (AE_STACK_UNDERFLOW);
}
/* Just set the stack entry to null */
walk_state->num_operands--;
walk_state->operands[walk_state->num_operands] = NULL;
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Count=%X State=%p #Ops=%u\n",
pop_count, walk_state, walk_state->num_operands));
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_obj_stack_pop_and_delete
*
* PARAMETERS: pop_count - Number of objects/entries to pop
* walk_state - Current Walk state
*
* RETURN: Status
*
* DESCRIPTION: Pop this walk's object stack and delete each object that is
* popped off.
*
******************************************************************************/
void
acpi_ds_obj_stack_pop_and_delete(u32 pop_count,
struct acpi_walk_state *walk_state)
{
s32 i;
union acpi_operand_object *obj_desc;
ACPI_FUNCTION_NAME(ds_obj_stack_pop_and_delete);
if (pop_count == 0) {
return;
}
for (i = (s32)pop_count - 1; i >= 0; i--) {
if (walk_state->num_operands == 0) {
return;
}
/* Pop the stack and delete an object if present in this stack entry */
walk_state->num_operands--;
obj_desc = walk_state->operands[i];
if (obj_desc) {
acpi_ut_remove_reference(walk_state->operands[i]);
walk_state->operands[i] = NULL;
}
}
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Count=%X State=%p #Ops=%X\n",
pop_count, walk_state, walk_state->num_operands));
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_get_current_walk_state
*
* PARAMETERS: thread - Get current active state for this Thread
*
* RETURN: Pointer to the current walk state
*
* DESCRIPTION: Get the walk state that is at the head of the list (the "current"
* walk state.)
*
******************************************************************************/
struct acpi_walk_state *acpi_ds_get_current_walk_state(struct acpi_thread_state
*thread)
{
ACPI_FUNCTION_NAME(ds_get_current_walk_state);
if (!thread) {
return (NULL);
}
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Current WalkState %p\n",
thread->walk_state_list));
return (thread->walk_state_list);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_push_walk_state
*
* PARAMETERS: walk_state - State to push
* thread - Thread state object
*
* RETURN: None
*
* DESCRIPTION: Place the Thread state at the head of the state list
*
******************************************************************************/
void
acpi_ds_push_walk_state(struct acpi_walk_state *walk_state,
struct acpi_thread_state *thread)
{
ACPI_FUNCTION_TRACE(ds_push_walk_state);
walk_state->next = thread->walk_state_list;
thread->walk_state_list = walk_state;
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_pop_walk_state
*
* PARAMETERS: thread - Current thread state
*
* RETURN: A walk_state object popped from the thread's stack
*
* DESCRIPTION: Remove and return the walkstate object that is at the head of
* the walk stack for the given walk list. NULL indicates that
* the list is empty.
*
******************************************************************************/
struct acpi_walk_state *acpi_ds_pop_walk_state(struct acpi_thread_state *thread)
{
struct acpi_walk_state *walk_state;
ACPI_FUNCTION_TRACE(ds_pop_walk_state);
walk_state = thread->walk_state_list;
if (walk_state) {
/* Next walk state becomes the current walk state */
thread->walk_state_list = walk_state->next;
/*
* Don't clear the NEXT field, this serves as an indicator
* that there is a parent WALK STATE
* Do Not: walk_state->Next = NULL;
*/
}
return_PTR(walk_state);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_create_walk_state
*
* PARAMETERS: owner_id - ID for object creation
* origin - Starting point for this walk
* method_desc - Method object
* thread - Current thread state
*
* RETURN: Pointer to the new walk state.
*
* DESCRIPTION: Allocate and initialize a new walk state. The current walk
* state is set to this new state.
*
******************************************************************************/
struct acpi_walk_state *acpi_ds_create_walk_state(acpi_owner_id owner_id,
union acpi_parse_object
*origin,
union acpi_operand_object
*method_desc,
struct acpi_thread_state
*thread)
{
struct acpi_walk_state *walk_state;
ACPI_FUNCTION_TRACE(ds_create_walk_state);
walk_state = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_walk_state));
if (!walk_state) {
return_PTR(NULL);
}
walk_state->descriptor_type = ACPI_DESC_TYPE_WALK;
walk_state->method_desc = method_desc;
walk_state->owner_id = owner_id;
walk_state->origin = origin;
walk_state->thread = thread;
walk_state->parser_state.start_op = origin;
/* Init the method args/local */
#ifndef ACPI_CONSTANT_EVAL_ONLY
acpi_ds_method_data_init(walk_state);
#endif
/* Put the new state at the head of the walk list */
if (thread) {
acpi_ds_push_walk_state(walk_state, thread);
}
return_PTR(walk_state);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_init_aml_walk
*
* PARAMETERS: walk_state - New state to be initialized
* op - Current parse op
* method_node - Control method NS node, if any
* aml_start - Start of AML
* aml_length - Length of AML
* info - Method info block (params, etc.)
* pass_number - 1, 2, or 3
*
* RETURN: Status
*
* DESCRIPTION: Initialize a walk state for a pass 1 or 2 parse tree walk
*
******************************************************************************/
acpi_status
acpi_ds_init_aml_walk(struct acpi_walk_state *walk_state,
union acpi_parse_object *op,
struct acpi_namespace_node *method_node,
u8 * aml_start,
u32 aml_length,
struct acpi_evaluate_info *info, u8 pass_number)
{
acpi_status status;
struct acpi_parse_state *parser_state = &walk_state->parser_state;
union acpi_parse_object *extra_op;
ACPI_FUNCTION_TRACE(ds_init_aml_walk);
walk_state->parser_state.aml =
walk_state->parser_state.aml_start =
walk_state->parser_state.aml_end =
walk_state->parser_state.pkg_end = aml_start;
/* Avoid undefined behavior: applying zero offset to null pointer */
if (aml_length != 0) {
walk_state->parser_state.aml_end += aml_length;
walk_state->parser_state.pkg_end += aml_length;
}
/* The next_op of the next_walk will be the beginning of the method */
walk_state->next_op = NULL;
walk_state->pass_number = pass_number;
if (info) {
walk_state->params = info->parameters;
walk_state->caller_return_desc = &info->return_object;
}
status = acpi_ps_init_scope(&walk_state->parser_state, op);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (method_node) {
walk_state->parser_state.start_node = method_node;
walk_state->walk_type = ACPI_WALK_METHOD;
walk_state->method_node = method_node;
walk_state->method_desc =
acpi_ns_get_attached_object(method_node);
/* Push start scope on scope stack and make it current */
status =
acpi_ds_scope_stack_push(method_node, ACPI_TYPE_METHOD,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Init the method arguments */
status = acpi_ds_method_data_init_args(walk_state->params,
ACPI_METHOD_NUM_ARGS,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
} else {
/*
* Setup the current scope.
* Find a Named Op that has a namespace node associated with it.
* search upwards from this Op. Current scope is the first
* Op with a namespace node.
*/
extra_op = parser_state->start_op;
while (extra_op && !extra_op->common.node) {
extra_op = extra_op->common.parent;
}
if (!extra_op) {
parser_state->start_node = NULL;
} else {
parser_state->start_node = extra_op->common.node;
}
if (parser_state->start_node) {
/* Push start scope on scope stack and make it current */
status =
acpi_ds_scope_stack_push(parser_state->start_node,
parser_state->start_node->
type, walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
}
status = acpi_ds_init_callbacks(walk_state, pass_number);
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_delete_walk_state
*
* PARAMETERS: walk_state - State to delete
*
* RETURN: Status
*
* DESCRIPTION: Delete a walk state including all internal data structures
*
******************************************************************************/
void acpi_ds_delete_walk_state(struct acpi_walk_state *walk_state)
{
union acpi_generic_state *state;
ACPI_FUNCTION_TRACE_PTR(ds_delete_walk_state, walk_state);
if (!walk_state) {
return_VOID;
}
if (walk_state->descriptor_type != ACPI_DESC_TYPE_WALK) {
ACPI_ERROR((AE_INFO, "%p is not a valid walk state",
walk_state));
return_VOID;
}
/* There should not be any open scopes */
if (walk_state->parser_state.scope) {
ACPI_ERROR((AE_INFO, "%p walk still has a scope list",
walk_state));
acpi_ps_cleanup_scope(&walk_state->parser_state);
}
/* Always must free any linked control states */
while (walk_state->control_state) {
state = walk_state->control_state;
walk_state->control_state = state->common.next;
acpi_ut_delete_generic_state(state);
}
/* Always must free any linked parse states */
while (walk_state->scope_info) {
state = walk_state->scope_info;
walk_state->scope_info = state->common.next;
acpi_ut_delete_generic_state(state);
}
/* Always must free any stacked result states */
while (walk_state->results) {
state = walk_state->results;
walk_state->results = state->common.next;
acpi_ut_delete_generic_state(state);
}
ACPI_FREE(walk_state);
return_VOID;
}
| linux-master | drivers/acpi/acpica/dswstate.c |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.