text: /******************************************************************************
   *
   * Name: acpiosxf.h - All interfaces to the OS Services Layer (OSL). These
   *                    interfaces must be implemented by OSL to interface the
   *                    ACPI components to the host operating system.
   *
   *****************************************************************************/
  
  /*
   * Copyright (C) 2000 - 2016, Intel Corp.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions, and the following disclaimer,
   *    without modification.
   * 2. Redistributions in binary form must reproduce at minimum a disclaimer
   *    substantially similar to the "NO WARRANTY" disclaimer below
   *    ("Disclaimer") and any redistribution must be conditioned upon
   *    including a substantially similar Disclaimer requirement for further
   *    binary redistribution.
   * 3. Neither the names of the above-listed copyright holders nor the names
   *    of any contributors may be used to endorse or promote products derived
   *    from this software without specific prior written permission.
   *
   * Alternatively, this software may be distributed under the terms of the
   * GNU General Public License ("GPL") version 2 as published by the Free
   * Software Foundation.
   *
   * NO WARRANTY
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
   * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGES.
   */
  
  #ifndef __ACPIOSXF_H__
  #define __ACPIOSXF_H__
  
  #include <acpi/platform/acenv.h>
  #include <acpi/actypes.h>
  
  /* Types for acpi_os_execute */
  
  typedef enum {
  	OSL_GLOBAL_LOCK_HANDLER,
  	OSL_NOTIFY_HANDLER,
  	OSL_GPE_HANDLER,
  	OSL_DEBUGGER_MAIN_THREAD,
  	OSL_DEBUGGER_EXEC_THREAD,
  	OSL_EC_POLL_HANDLER,
  	OSL_EC_BURST_HANDLER
  } acpi_execute_type;
  
  #define ACPI_NO_UNIT_LIMIT          ((u32) -1)
  #define ACPI_MUTEX_SEM              1
  
  /* Functions for acpi_os_signal */
  
  #define ACPI_SIGNAL_FATAL           0
  #define ACPI_SIGNAL_BREAKPOINT      1
  
  struct acpi_signal_fatal_info {
  	u32 type;
  	u32 code;
  	u32 argument;
  };
  
  /*
   * OSL Initialization and shutdown primitives
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_initialize
  acpi_status acpi_os_initialize(void);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_terminate
  acpi_status acpi_os_terminate(void);
  #endif
  
  /*
   * ACPI Table interfaces
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_root_pointer
  acpi_physical_address acpi_os_get_root_pointer(void);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_predefined_override
  acpi_status
  acpi_os_predefined_override(const struct acpi_predefined_names *init_val,
  			    char **new_val);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_table_override
  acpi_status
  acpi_os_table_override(struct acpi_table_header *existing_table,
  		       struct acpi_table_header **new_table);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_physical_table_override
  acpi_status
  acpi_os_physical_table_override(struct acpi_table_header *existing_table,
  				acpi_physical_address * new_address,
  				u32 *new_table_length);
  #endif
  
  /*
   * Spinlock primitives
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_lock
  acpi_status acpi_os_create_lock(acpi_spinlock * out_handle);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_lock
  void acpi_os_delete_lock(acpi_spinlock handle);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_lock
  acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock handle);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_release_lock
  void acpi_os_release_lock(acpi_spinlock handle, acpi_cpu_flags flags);
  #endif
  
  /*
   * Semaphore primitives
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_semaphore
  acpi_status
  acpi_os_create_semaphore(u32 max_units,
  			 u32 initial_units, acpi_semaphore * out_handle);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_semaphore
  acpi_status acpi_os_delete_semaphore(acpi_semaphore handle);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_wait_semaphore
  acpi_status
  acpi_os_wait_semaphore(acpi_semaphore handle, u32 units, u16 timeout);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_signal_semaphore
  acpi_status acpi_os_signal_semaphore(acpi_semaphore handle, u32 units);
  #endif
  
  /*
   * Mutex primitives. May be configured to use semaphores instead via
   * ACPI_MUTEX_TYPE (see platform/acenv.h)
   */
  #if (ACPI_MUTEX_TYPE != ACPI_BINARY_SEMAPHORE)
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_mutex
  acpi_status acpi_os_create_mutex(acpi_mutex * out_handle);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_mutex
  void acpi_os_delete_mutex(acpi_mutex handle);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_mutex
  acpi_status acpi_os_acquire_mutex(acpi_mutex handle, u16 timeout);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_release_mutex
  void acpi_os_release_mutex(acpi_mutex handle);
  #endif
  
  #endif
  
  /*
   * Memory allocation and mapping
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate
  void *acpi_os_allocate(acpi_size size);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate_zeroed
  void *acpi_os_allocate_zeroed(acpi_size size);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_free
  void acpi_os_free(void *memory);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_map_memory
  void *acpi_os_map_memory(acpi_physical_address where, acpi_size length);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_unmap_memory
  void acpi_os_unmap_memory(void *logical_address, acpi_size size);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_physical_address
  acpi_status
  acpi_os_get_physical_address(void *logical_address,
  			     acpi_physical_address * physical_address);
  #endif
  
  /*
   * Memory/Object Cache
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_cache
  acpi_status
  acpi_os_create_cache(char *cache_name,
  		     u16 object_size,
  		     u16 max_depth, acpi_cache_t ** return_cache);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_cache
  acpi_status acpi_os_delete_cache(acpi_cache_t * cache);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_purge_cache
  acpi_status acpi_os_purge_cache(acpi_cache_t * cache);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_object
  void *acpi_os_acquire_object(acpi_cache_t * cache);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_release_object
  acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object);
  #endif
  
  /*
   * Interrupt handlers
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_install_interrupt_handler
  acpi_status
  acpi_os_install_interrupt_handler(u32 interrupt_number,
  				  acpi_osd_handler service_routine,
  				  void *context);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_remove_interrupt_handler
  acpi_status
  acpi_os_remove_interrupt_handler(u32 interrupt_number,
  				 acpi_osd_handler service_routine);
  #endif
  
  /*
   * Threads and Scheduling
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_thread_id
  acpi_thread_id acpi_os_get_thread_id(void);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_execute
  acpi_status
  acpi_os_execute(acpi_execute_type type,
  		acpi_osd_exec_callback function, void *context);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_wait_events_complete
  void acpi_os_wait_events_complete(void);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_sleep
  void acpi_os_sleep(u64 milliseconds);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_stall
  void acpi_os_stall(u32 microseconds);
  #endif
  
  /*
   * Platform and hardware-independent I/O interfaces
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_read_port
  acpi_status acpi_os_read_port(acpi_io_address address, u32 *value, u32 width);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_write_port
  acpi_status acpi_os_write_port(acpi_io_address address, u32 value, u32 width);
  #endif
  
  /*
   * Platform and hardware-independent physical memory interfaces
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_read_memory
  acpi_status
  acpi_os_read_memory(acpi_physical_address address, u64 *value, u32 width);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_write_memory
  acpi_status
  acpi_os_write_memory(acpi_physical_address address, u64 value, u32 width);
  #endif
  
  /*
   * Platform and hardware-independent PCI configuration space access
   * Note: Can't use "Register" as a parameter, changed to "Reg" --
   * certain compilers complain.
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_read_pci_configuration
  acpi_status
  acpi_os_read_pci_configuration(struct acpi_pci_id *pci_id,
  			       u32 reg, u64 *value, u32 width);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_write_pci_configuration
  acpi_status
  acpi_os_write_pci_configuration(struct acpi_pci_id *pci_id,
  				u32 reg, u64 value, u32 width);
  #endif
  
  /*
   * Miscellaneous
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_readable
  u8 acpi_os_readable(void *pointer, acpi_size length);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_writable
  u8 acpi_os_writable(void *pointer, acpi_size length);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_timer
  u64 acpi_os_get_timer(void);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_signal
  acpi_status acpi_os_signal(u32 function, void *info);
  #endif
  
  /*
   * Debug print routines
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_printf
  void ACPI_INTERNAL_VAR_XFACE acpi_os_printf(const char *format, ...);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_vprintf
  void acpi_os_vprintf(const char *format, va_list args);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_redirect_output
  void acpi_os_redirect_output(void *destination);
  #endif
  
  /*
   * Debug IO
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_line
  acpi_status acpi_os_get_line(char *buffer, u32 buffer_length, u32 *bytes_read);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_initialize_command_signals
  acpi_status acpi_os_initialize_command_signals(void);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_terminate_command_signals
  void acpi_os_terminate_command_signals(void);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_wait_command_ready
  acpi_status acpi_os_wait_command_ready(void);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_notify_command_complete
  acpi_status acpi_os_notify_command_complete(void);
  #endif
  
  /*
   * Obtain ACPI table(s)
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_name
  acpi_status
  acpi_os_get_table_by_name(char *signature,
  			  u32 instance,
  			  struct acpi_table_header **table,
  			  acpi_physical_address * address);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_index
  acpi_status
  acpi_os_get_table_by_index(u32 index,
  			   struct acpi_table_header **table,
  			   u32 *instance, acpi_physical_address * address);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_address
  acpi_status
  acpi_os_get_table_by_address(acpi_physical_address address,
  			     struct acpi_table_header **table);
  #endif
  
  /*
   * Directory manipulation
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_open_directory
  void *acpi_os_open_directory(char *pathname,
  			     char *wildcard_spec, char requested_file_type);
  #endif
  
  /* requeste_file_type values */
  
  #define REQUEST_FILE_ONLY                   0
  #define REQUEST_DIR_ONLY                    1
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_next_filename
  char *acpi_os_get_next_filename(void *dir_handle);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_close_directory
  void acpi_os_close_directory(void *dir_handle);
  #endif
  
  /*
   * File I/O and related support
   */
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_open_file
  ACPI_FILE acpi_os_open_file(const char *path, u8 modes);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_close_file
  void acpi_os_close_file(ACPI_FILE file);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_read_file
  int
  acpi_os_read_file(ACPI_FILE file,
  		  void *buffer, acpi_size size, acpi_size count);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_write_file
  int
  acpi_os_write_file(ACPI_FILE file,
  		   void *buffer, acpi_size size, acpi_size count);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_file_offset
  long acpi_os_get_file_offset(ACPI_FILE file);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_set_file_offset
  acpi_status acpi_os_set_file_offset(ACPI_FILE file, long offset, u8 from);
  #endif
  
  #ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_trace_point
  void
  acpi_os_trace_point(acpi_trace_event_type type,
  		    u8 begin, u8 *aml, char *pathname);
  #endif
  
  #endif				/* __ACPIOSXF_H__ */
  