include/acpi/acstruct.h

   1 /******************************************************************************
   2  *
   3  * Name: acstruct.h - Internal structs
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2006, R. Byron Moore
   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 /*****************************************************************************
  48  *
  49  * Tree walking typedefs and structs
  50  *
  51  ****************************************************************************/
  52
  53 /*
  54  * Walk state - current state of a parse tree walk.  Used for both a leisurely stroll through
  55  * the tree (for whatever reason), and for control method execution.
  56  */
  57 #define ACPI_NEXT_OP_DOWNWARD       1
  58 #define ACPI_NEXT_OP_UPWARD         2
  59
  60 #define ACPI_WALK_NON_METHOD        0
  61 #define ACPI_WALK_METHOD            1
  62 #define ACPI_WALK_METHOD_RESTART    2
  63 #define ACPI_WALK_CONST_REQUIRED    3
  64 #define ACPI_WALK_CONST_OPTIONAL    4
  65
  66 struct acpi_walk_state {
  67         u8 data_type;           /* To differentiate various internal objs MUST BE FIRST! */
  68         u8 walk_type;
  69         acpi_owner_id owner_id; /* Owner of objects created during the walk */
  70         u8 last_predicate;      /* Result of last predicate */
  71         u8 current_result;      /* */
  72         u8 next_op_info;        /* Info about next_op */
  73         u8 num_operands;        /* Stack pointer for Operands[] array */
  74         u8 return_used;
  75         u16 opcode;             /* Current AML opcode */
  76         u8 scope_depth;
  77         u8 pass_number;         /* Parse pass during table load */
  78         u32 arg_count;          /* push for fixed or var args */
  79         u32 aml_offset;
  80         u32 arg_types;
  81         u32 method_breakpoint;  /* For single stepping */
  82         u32 user_breakpoint;    /* User AML breakpoint */
  83         u32 parse_flags;
  84         u32 prev_arg_types;
  85
  86         u8 *aml_last_while;
  87         struct acpi_namespace_node arguments[ACPI_METHOD_NUM_ARGS];     /* Control method arguments */
  88         union acpi_operand_object **caller_return_desc;
  89         union acpi_generic_state *control_state;        /* List of control states (nested IFs) */
  90         struct acpi_namespace_node *deferred_node;      /* Used when executing deferred opcodes */
  91         struct acpi_gpe_event_info *gpe_event_info;     /* Info for GPE (_Lxx/_Exx methods only */
  92         union acpi_operand_object *implicit_return_obj;
  93         struct acpi_namespace_node local_variables[ACPI_METHOD_NUM_LOCALS];     /* Control method locals */
  94         struct acpi_namespace_node *method_call_node;   /* Called method Node */
  95         union acpi_parse_object *method_call_op;        /* method_call Op if running a method */
  96         union acpi_operand_object *method_desc; /* Method descriptor if running a method */
  97         struct acpi_namespace_node *method_node;        /* Method node if running a method. */
  98         union acpi_parse_object *op;    /* Current parser op */
  99         union acpi_operand_object *operands[ACPI_OBJ_NUM_OPERANDS + 1]; /* Operands passed to the interpreter (+1 for NULL terminator) */
 100         const struct acpi_opcode_info *op_info; /* Info on current opcode */
 101         union acpi_parse_object *origin;        /* Start of walk [Obsolete] */
 102         union acpi_operand_object **params;
 103         struct acpi_parse_state parser_state;   /* Current state of parser */
 104         union acpi_operand_object *result_obj;
 105         union acpi_generic_state *results;      /* Stack of accumulated results */
 106         union acpi_operand_object *return_desc; /* Return object, if any */
 107         union acpi_generic_state *scope_info;   /* Stack of nested scopes */
 108
 109         union acpi_parse_object *prev_op;       /* Last op that was processed */
 110         union acpi_parse_object *next_op;       /* next op to be processed */
 111         acpi_parse_downwards descending_callback;
 112         acpi_parse_upwards ascending_callback;
 113         struct acpi_thread_state *thread;
 114         struct acpi_walk_state *next;   /* Next walk_state in list */
 115 };
 116
 117 /* Info used by acpi_ps_init_objects */
 118
 119 struct acpi_init_walk_info {
 120         u16 method_count;
 121         u16 device_count;
 122         u16 op_region_count;
 123         u16 field_count;
 124         u16 buffer_count;
 125         u16 package_count;
 126         u16 op_region_init;
 127         u16 field_init;
 128         u16 buffer_init;
 129         u16 package_init;
 130         u16 object_count;
 131         struct acpi_table_desc *table_desc;
 132 };
 133
 134 /* Info used by acpi_ns_initialize_devices */
 135
 136 struct acpi_device_walk_info {
 137         u16 device_count;
 138         u16 num_STA;
 139         u16 num_INI;
 140         struct acpi_table_desc *table_desc;
 141 };
 142
 143 /* TBD: [Restructure] Merge with struct above */
 144
 145 struct acpi_walk_info {
 146         u32 debug_level;
 147         u32 count;
 148         acpi_owner_id owner_id;
 149         u8 display_type;
 150 };
 151
 152 /* Display Types */
 153
 154 #define ACPI_DISPLAY_SUMMARY    (u8) 0
 155 #define ACPI_DISPLAY_OBJECTS    (u8) 1
 156 #define ACPI_DISPLAY_MASK       (u8) 1
 157
 158 #define ACPI_DISPLAY_SHORT      (u8) 2
 159
 160 struct acpi_get_devices_info {
 161         acpi_walk_callback user_function;
 162         void *context;
 163         char *hid;
 164 };
 165
 166 union acpi_aml_operands {
 167         union acpi_operand_object *operands[7];
 168
 169         struct {
 170                 struct acpi_object_integer *type;
 171                 struct acpi_object_integer *code;
 172                 struct acpi_object_integer *argument;
 173
 174         } fatal;
 175
 176         struct {
 177                 union acpi_operand_object *source;
 178                 struct acpi_object_integer *index;
 179                 union acpi_operand_object *target;
 180
 181         } index;
 182
 183         struct {
 184                 union acpi_operand_object *source;
 185                 struct acpi_object_integer *index;
 186                 struct acpi_object_integer *length;
 187                 union acpi_operand_object *target;
 188
 189         } mid;
 190 };
 191
 192 /* Internal method parameter list */
 193
 194 struct acpi_parameter_info {
 195         struct acpi_namespace_node *node;
 196         union acpi_operand_object *obj_desc;
 197         union acpi_operand_object **parameters;
 198         union acpi_operand_object *return_object;
 199         u8 pass_number;
 200         u8 parameter_type;
 201         u8 return_object_type;
 202 };
 203
 204 /* Types for parameter_type above */
 205
 206 #define ACPI_PARAM_ARGS                 0
 207 #define ACPI_PARAM_GPE                  1
 208
 209 #endif