text: /******************************************************************************
   *
   * Name: acstruct.h - Internal structs
   *
   *****************************************************************************/
  
  /*
   * Copyright (C) 2000 - 2015, 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 __ACSTRUCT_H__
  #define __ACSTRUCT_H__
  
  /* acpisrc:struct_defs -- for acpisrc conversion */
  
  /*****************************************************************************
   *
   * Tree walking typedefs and structs
   *
   ****************************************************************************/
  
  /*
   * Walk state - current state of a parse tree walk. Used for both a leisurely
   * stroll through the tree (for whatever reason), and for control method
   * execution.
   */
  #define ACPI_NEXT_OP_DOWNWARD       1
  #define ACPI_NEXT_OP_UPWARD         2
  
  /*
   * Groups of definitions for walk_type used for different implementations of
   * walkers (never simultaneously) - flags for interpreter:
   */
  #define ACPI_WALK_NON_METHOD        0
  #define ACPI_WALK_METHOD            0x01
  #define ACPI_WALK_METHOD_RESTART    0x02
  
  struct acpi_walk_state {
  	struct acpi_walk_state *next;	/* Next walk_state in list */
  	u8 descriptor_type;	/* To differentiate various internal objs */
  	u8 walk_type;
  	u16 opcode;		/* Current AML opcode */
  	u8 next_op_info;	/* Info about next_op */
  	u8 num_operands;	/* Stack pointer for Operands[] array */
  	u8 operand_index;	/* Index into operand stack, to be used by acpi_ds_obj_stack_push */
  	acpi_owner_id owner_id;	/* Owner of objects created during the walk */
  	u8 last_predicate;	/* Result of last predicate */
  	u8 current_result;
  	u8 return_used;
  	u8 scope_depth;
  	u8 pass_number;		/* Parse pass during table load */
  	u8 namespace_override;	/* Override existing objects */
  	u8 result_size;		/* Total elements for the result stack */
  	u8 result_count;	/* Current number of occupied elements of result stack */
  	u32 aml_offset;
  	u32 arg_types;
  	u32 method_breakpoint;	/* For single stepping */
  	u32 user_breakpoint;	/* User AML breakpoint */
  	u32 parse_flags;
  
  	struct acpi_parse_state parser_state;	/* Current state of parser */
  	u32 prev_arg_types;
  	u32 arg_count;		/* push for fixed or var args */
  
  	struct acpi_namespace_node arguments[ACPI_METHOD_NUM_ARGS];	/* Control method arguments */
  	struct acpi_namespace_node local_variables[ACPI_METHOD_NUM_LOCALS];	/* Control method locals */
  	union acpi_operand_object *operands[ACPI_OBJ_NUM_OPERANDS + 1];	/* Operands passed to the interpreter (+1 for NULL terminator) */
  	union acpi_operand_object **params;
  
  	u8 *aml_last_while;
  	union acpi_operand_object **caller_return_desc;
  	union acpi_generic_state *control_state;	/* List of control states (nested IFs) */
  	struct acpi_namespace_node *deferred_node;	/* Used when executing deferred opcodes */
  	union acpi_operand_object *implicit_return_obj;
  	struct acpi_namespace_node *method_call_node;	/* Called method Node */
  	union acpi_parse_object *method_call_op;	/* method_call Op if running a method */
  	union acpi_operand_object *method_desc;	/* Method descriptor if running a method */
  	struct acpi_namespace_node *method_node;	/* Method node if running a method. */
  	union acpi_parse_object *op;	/* Current parser op */
  	const struct acpi_opcode_info *op_info;	/* Info on current opcode */
  	union acpi_parse_object *origin;	/* Start of walk [Obsolete] */
  	union acpi_operand_object *result_obj;
  	union acpi_generic_state *results;	/* Stack of accumulated results */
  	union acpi_operand_object *return_desc;	/* Return object, if any */
  	union acpi_generic_state *scope_info;	/* Stack of nested scopes */
  	union acpi_parse_object *prev_op;	/* Last op that was processed */
  	union acpi_parse_object *next_op;	/* next op to be processed */
  	struct acpi_thread_state *thread;
  	acpi_parse_downwards descending_callback;
  	acpi_parse_upwards ascending_callback;
  };
  
  /* Info used by acpi_ns_initialize_objects and acpi_ds_initialize_objects */
  
  struct acpi_init_walk_info {
  	u32 table_index;
  	u32 object_count;
  	u32 method_count;
  	u32 serial_method_count;
  	u32 non_serial_method_count;
  	u32 serialized_method_count;
  	u32 device_count;
  	u32 op_region_count;
  	u32 field_count;
  	u32 buffer_count;
  	u32 package_count;
  	u32 op_region_init;
  	u32 field_init;
  	u32 buffer_init;
  	u32 package_init;
  	acpi_owner_id owner_id;
  };
  
  struct acpi_get_devices_info {
  	acpi_walk_callback user_function;
  	void *context;
  	const char *hid;
  };
  
  union acpi_aml_operands {
  	union acpi_operand_object *operands[7];
  
  	struct {
  		struct acpi_object_integer *type;
  		struct acpi_object_integer *code;
  		struct acpi_object_integer *argument;
  
  	} fatal;
  
  	struct {
  		union acpi_operand_object *source;
  		struct acpi_object_integer *index;
  		union acpi_operand_object *target;
  
  	} index;
  
  	struct {
  		union acpi_operand_object *source;
  		struct acpi_object_integer *index;
  		struct acpi_object_integer *length;
  		union acpi_operand_object *target;
  
  	} mid;
  };
  
  /*
   * Structure used to pass object evaluation information and parameters.
   * Purpose is to reduce CPU stack use.
   */
  struct acpi_evaluate_info {
  	/* The first 3 elements are passed by the caller to acpi_ns_evaluate */
  
  	struct acpi_namespace_node *prefix_node;	/* Input: starting node */
  	char *relative_pathname;	/* Input: path relative to prefix_node */
  	union acpi_operand_object **parameters;	/* Input: argument list */
  
  	struct acpi_namespace_node *node;	/* Resolved node (prefix_node:relative_pathname) */
  	union acpi_operand_object *obj_desc;	/* Object attached to the resolved node */
  	char *full_pathname;	/* Full pathname of the resolved node */
  
  	const union acpi_predefined_info *predefined;	/* Used if Node is a predefined name */
  	union acpi_operand_object *return_object;	/* Object returned from the evaluation */
  	union acpi_operand_object *parent_package;	/* Used if return object is a Package */
  
  	u32 return_flags;	/* Used for return value analysis */
  	u32 return_btype;	/* Bitmapped type of the returned object */
  	u16 param_count;	/* Count of the input argument list */
  	u8 pass_number;		/* Parser pass number */
  	u8 return_object_type;	/* Object type of the returned object */
  	u8 node_flags;		/* Same as Node->Flags */
  	u8 flags;		/* General flags */
  };
  
  /* Values for Flags above */
  
  #define ACPI_IGNORE_RETURN_VALUE    1
  
  /* Defines for return_flags field above */
  
  #define ACPI_OBJECT_REPAIRED        1
  #define ACPI_OBJECT_WRAPPED         2
  
  /* Info used by acpi_ns_initialize_devices */
  
  struct acpi_device_walk_info {
  	struct acpi_table_desc *table_desc;
  	struct acpi_evaluate_info *evaluate_info;
  	u32 device_count;
  	u32 num_STA;
  	u32 num_INI;
  };
  
  /* TBD: [Restructure] Merge with struct above */
  
  struct acpi_walk_info {
  	u32 debug_level;
  	u32 count;
  	acpi_owner_id owner_id;
  	u8 display_type;
  };
  
  /* Display Types */
  
  #define ACPI_DISPLAY_SUMMARY        (u8) 0
  #define ACPI_DISPLAY_OBJECTS        (u8) 1
  #define ACPI_DISPLAY_MASK           (u8) 1
  
  #define ACPI_DISPLAY_SHORT          (u8) 2
  
  #endif
  