drivers/acpi/acpica/acstruct.h

   1 /******************************************************************************
   2  *
   3  * Name: acstruct.h - Internal structs
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2008, Intel Corp.
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43
  44 #ifndef __ACSTRUCT_H__
  45 #define __ACSTRUCT_H__
  46
  47 /* acpisrc:struct_defs -- for acpisrc conversion */
  48
  49 /*****************************************************************************
  50  *
  51  * Tree walking typedefs and structs
  52  *
  53  ****************************************************************************/
  54
  55 /*
  56  * Walk state - current state of a parse tree walk.  Used for both a leisurely
  57  * stroll through the tree (for whatever reason), and for control method
  58  * execution.
  59  */
  60 #define ACPI_NEXT_OP_DOWNWARD       1
  61 #define ACPI_NEXT_OP_UPWARD         2
  62
  63 /*
  64  * Groups of definitions for walk_type used for different implementations of
  65  * walkers (never simultaneously) - flags for interpreter:
  66  */
  67 #define ACPI_WALK_NON_METHOD        0
  68 #define ACPI_WALK_METHOD            0x01
  69 #define ACPI_WALK_METHOD_RESTART    0x02
  70
  71 /* Flags for i_aSL compiler only */
  72
  73 #define ACPI_WALK_CONST_REQUIRED    0x10
  74 #define ACPI_WALK_CONST_OPTIONAL    0x20
  75
  76 struct acpi_walk_state {
  77         struct acpi_walk_state *next;   /* Next walk_state in list */
  78         u8 descriptor_type;     /* To differentiate various internal objs */
  79         u8 walk_type;
  80         u16 opcode;             /* Current AML opcode */
  81         u8 next_op_info;        /* Info about next_op */
  82         u8 num_operands;        /* Stack pointer for Operands[] array */
  83         u8 operand_index;       /* Index into operand stack, to be used by acpi_ds_obj_stack_push */
  84         acpi_owner_id owner_id; /* Owner of objects created during the walk */
  85         u8 last_predicate;      /* Result of last predicate */
  86         u8 current_result;
  87         u8 return_used;
  88         u8 scope_depth;
  89         u8 pass_number;         /* Parse pass during table load */
  90         u8 result_size;         /* Total elements for the result stack */
  91         u8 result_count;        /* Current number of occupied elements of result stack */
  92         u32 aml_offset;
  93         u32 arg_types;
  94         u32 method_breakpoint;  /* For single stepping */
  95         u32 user_breakpoint;    /* User AML breakpoint */
  96         u32 parse_flags;
  97
  98         struct acpi_parse_state parser_state;   /* Current state of parser */
  99         u32 prev_arg_types;
 100         u32 arg_count;          /* push for fixed or var args */
 101
 102         struct acpi_namespace_node arguments[ACPI_METHOD_NUM_ARGS];     /* Control method arguments */
 103         struct acpi_namespace_node local_variables[ACPI_METHOD_NUM_LOCALS];     /* Control method locals */
 104         union acpi_operand_object *operands[ACPI_OBJ_NUM_OPERANDS + 1]; /* Operands passed to the interpreter (+1 for NULL terminator) */
 105         union acpi_operand_object **params;
 106
 107         u8 *aml_last_while;
 108         union acpi_operand_object **caller_return_desc;
 109         union acpi_generic_state *control_state;        /* List of control states (nested IFs) */
 110         struct acpi_namespace_node *deferred_node;      /* Used when executing deferred opcodes */
 111         union acpi_operand_object *implicit_return_obj;
 112         struct acpi_namespace_node *method_call_node;   /* Called method Node */
 113         union acpi_parse_object *method_call_op;        /* method_call Op if running a method */
 114         union acpi_operand_object *method_desc; /* Method descriptor if running a method */
 115         struct acpi_namespace_node *method_node;        /* Method node if running a method. */
 116         union acpi_parse_object *op;    /* Current parser op */
 117         const struct acpi_opcode_info *op_info; /* Info on current opcode */
 118         union acpi_parse_object *origin;        /* Start of walk [Obsolete] */
 119         union acpi_operand_object *result_obj;
 120         union acpi_generic_state *results;      /* Stack of accumulated results */
 121         union acpi_operand_object *return_desc; /* Return object, if any */
 122         union acpi_generic_state *scope_info;   /* Stack of nested scopes */
 123         union acpi_parse_object *prev_op;       /* Last op that was processed */
 124         union acpi_parse_object *next_op;       /* next op to be processed */
 125         struct acpi_thread_state *thread;
 126         acpi_parse_downwards descending_callback;
 127         acpi_parse_upwards ascending_callback;
 128 };
 129
 130 /* Info used by acpi_ps_init_objects */
 131
 132 struct acpi_init_walk_info {
 133         u16 method_count;
 134         u16 device_count;
 135         u16 op_region_count;
 136         u16 field_count;
 137         u16 buffer_count;
 138         u16 package_count;
 139         u16 op_region_init;
 140         u16 field_init;
 141         u16 buffer_init;
 142         u16 package_init;
 143         u16 object_count;
 144         acpi_owner_id owner_id;
 145         u32 table_index;
 146 };
 147
 148 struct acpi_get_devices_info {
 149         acpi_walk_callback user_function;
 150         void *context;
 151         const char *hid;
 152 };
 153
 154 union acpi_aml_operands {
 155         union acpi_operand_object *operands[7];
 156
 157         struct {
 158                 struct acpi_object_integer *type;
 159                 struct acpi_object_integer *code;
 160                 struct acpi_object_integer *argument;
 161
 162         } fatal;
 163
 164         struct {
 165                 union acpi_operand_object *source;
 166                 struct acpi_object_integer *index;
 167                 union acpi_operand_object *target;
 168
 169         } index;
 170
 171         struct {
 172                 union acpi_operand_object *source;
 173                 struct acpi_object_integer *index;
 174                 struct acpi_object_integer *length;
 175                 union acpi_operand_object *target;
 176
 177         } mid;
 178 };
 179
 180 /*
 181  * Structure used to pass object evaluation parameters.
 182  * Purpose is to reduce CPU stack use.
 183  */
 184 struct acpi_evaluate_info {
 185         struct acpi_namespace_node *prefix_node;
 186         char *pathname;
 187         union acpi_operand_object *obj_desc;
 188         union acpi_operand_object **parameters;
 189         struct acpi_namespace_node *resolved_node;
 190         union acpi_operand_object *return_object;
 191         u8 param_count;
 192         u8 pass_number;
 193         u8 return_object_type;
 194         u8 flags;
 195 };
 196
 197 /* Values for Flags above */
 198
 199 #define ACPI_IGNORE_RETURN_VALUE        1
 200
 201 /* Info used by acpi_ns_initialize_devices */
 202
 203 struct acpi_device_walk_info {
 204         u16 device_count;
 205         u16 num_STA;
 206         u16 num_INI;
 207         struct acpi_table_desc *table_desc;
 208         struct acpi_evaluate_info *evaluate_info;
 209 };
 210
 211 /* TBD: [Restructure] Merge with struct above */
 212
 213 struct acpi_walk_info {
 214         u32 debug_level;
 215         u32 count;
 216         acpi_owner_id owner_id;
 217         u8 display_type;
 218 };
 219
 220 /* Display Types */
 221
 222 #define ACPI_DISPLAY_SUMMARY        (u8) 0
 223 #define ACPI_DISPLAY_OBJECTS        (u8) 1
 224 #define ACPI_DISPLAY_MASK           (u8) 1
 225
 226 #define ACPI_DISPLAY_SHORT          (u8) 2
 227
 228 #endif