drivers/acpi/acpica/acstruct.h

   1 /******************************************************************************
   2  *
   3  * Name: acstruct.h - Internal structs
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2015, 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 struct acpi_walk_state {
  72         struct acpi_walk_state *next;   /* Next walk_state in list */
  73         u8 descriptor_type;     /* To differentiate various internal objs */
  74         u8 walk_type;
  75         u16 opcode;             /* Current AML opcode */
  76         u8 next_op_info;        /* Info about next_op */
  77         u8 num_operands;        /* Stack pointer for Operands[] array */
  78         u8 operand_index;       /* Index into operand stack, to be used by acpi_ds_obj_stack_push */
  79         acpi_owner_id owner_id; /* Owner of objects created during the walk */
  80         u8 last_predicate;      /* Result of last predicate */
  81         u8 current_result;
  82         u8 return_used;
  83         u8 scope_depth;
  84         u8 pass_number;         /* Parse pass during table load */
  85         u8 namespace_override;  /* Override existing objects */
  86         u8 result_size;         /* Total elements for the result stack */
  87         u8 result_count;        /* Current number of occupied elements of result stack */
  88         u8 *aml;
  89         u32 arg_types;
  90         u32 method_breakpoint;  /* For single stepping */
  91         u32 user_breakpoint;    /* User AML breakpoint */
  92         u32 parse_flags;
  93
  94         struct acpi_parse_state parser_state;   /* Current state of parser */
  95         u32 prev_arg_types;
  96         u32 arg_count;          /* push for fixed or var args */
  97
  98         struct acpi_namespace_node arguments[ACPI_METHOD_NUM_ARGS];     /* Control method arguments */
  99         struct acpi_namespace_node local_variables[ACPI_METHOD_NUM_LOCALS];     /* Control method locals */
 100         union acpi_operand_object *operands[ACPI_OBJ_NUM_OPERANDS + 1]; /* Operands passed to the interpreter (+1 for NULL terminator) */
 101         union acpi_operand_object **params;
 102
 103         u8 *aml_last_while;
 104         union acpi_operand_object **caller_return_desc;
 105         union acpi_generic_state *control_state;        /* List of control states (nested IFs) */
 106         struct acpi_namespace_node *deferred_node;      /* Used when executing deferred opcodes */
 107         union acpi_operand_object *implicit_return_obj;
 108         struct acpi_namespace_node *method_call_node;   /* Called method Node */
 109         union acpi_parse_object *method_call_op;        /* method_call Op if running a method */
 110         union acpi_operand_object *method_desc; /* Method descriptor if running a method */
 111         struct acpi_namespace_node *method_node;        /* Method node if running a method. */
 112         union acpi_parse_object *op;    /* Current parser op */
 113         const struct acpi_opcode_info *op_info; /* Info on current opcode */
 114         union acpi_parse_object *origin;        /* Start of walk [Obsolete] */
 115         union acpi_operand_object *result_obj;
 116         union acpi_generic_state *results;      /* Stack of accumulated results */
 117         union acpi_operand_object *return_desc; /* Return object, if any */
 118         union acpi_generic_state *scope_info;   /* Stack of nested scopes */
 119         union acpi_parse_object *prev_op;       /* Last op that was processed */
 120         union acpi_parse_object *next_op;       /* next op to be processed */
 121         struct acpi_thread_state *thread;
 122         acpi_parse_downwards descending_callback;
 123         acpi_parse_upwards ascending_callback;
 124 };
 125
 126 /* Info used by acpi_ns_initialize_objects and acpi_ds_initialize_objects */
 127
 128 struct acpi_init_walk_info {
 129         u32 table_index;
 130         u32 object_count;
 131         u32 method_count;
 132         u32 serial_method_count;
 133         u32 non_serial_method_count;
 134         u32 serialized_method_count;
 135         u32 device_count;
 136         u32 op_region_count;
 137         u32 field_count;
 138         u32 buffer_count;
 139         u32 package_count;
 140         u32 op_region_init;
 141         u32 field_init;
 142         u32 buffer_init;
 143         u32 package_init;
 144         acpi_owner_id owner_id;
 145 };
 146
 147 struct acpi_get_devices_info {
 148         acpi_walk_callback user_function;
 149         void *context;
 150         const char *hid;
 151 };
 152
 153 union acpi_aml_operands {
 154         union acpi_operand_object *operands[7];
 155
 156         struct {
 157                 struct acpi_object_integer *type;
 158                 struct acpi_object_integer *code;
 159                 struct acpi_object_integer *argument;
 160
 161         } fatal;
 162
 163         struct {
 164                 union acpi_operand_object *source;
 165                 struct acpi_object_integer *index;
 166                 union acpi_operand_object *target;
 167
 168         } index;
 169
 170         struct {
 171                 union acpi_operand_object *source;
 172                 struct acpi_object_integer *index;
 173                 struct acpi_object_integer *length;
 174                 union acpi_operand_object *target;
 175
 176         } mid;
 177 };
 178
 179 /*
 180  * Structure used to pass object evaluation information and parameters.
 181  * Purpose is to reduce CPU stack use.
 182  */
 183 struct acpi_evaluate_info {
 184         /* The first 3 elements are passed by the caller to acpi_ns_evaluate */
 185
 186         struct acpi_namespace_node *prefix_node;        /* Input: starting node */
 187         char *relative_pathname;        /* Input: path relative to prefix_node */
 188         union acpi_operand_object **parameters; /* Input: argument list */
 189
 190         struct acpi_namespace_node *node;       /* Resolved node (prefix_node:relative_pathname) */
 191         union acpi_operand_object *obj_desc;    /* Object attached to the resolved node */
 192         char *full_pathname;    /* Full pathname of the resolved node */
 193
 194         const union acpi_predefined_info *predefined;   /* Used if Node is a predefined name */
 195         union acpi_operand_object *return_object;       /* Object returned from the evaluation */
 196         union acpi_operand_object *parent_package;      /* Used if return object is a Package */
 197
 198         u32 return_flags;       /* Used for return value analysis */
 199         u32 return_btype;       /* Bitmapped type of the returned object */
 200         u16 param_count;        /* Count of the input argument list */
 201         u8 pass_number;         /* Parser pass number */
 202         u8 return_object_type;  /* Object type of the returned object */
 203         u8 node_flags;          /* Same as Node->Flags */
 204         u8 flags;               /* General flags */
 205 };
 206
 207 /* Values for Flags above */
 208
 209 #define ACPI_IGNORE_RETURN_VALUE    1
 210
 211 /* Defines for return_flags field above */
 212
 213 #define ACPI_OBJECT_REPAIRED        1
 214 #define ACPI_OBJECT_WRAPPED         2
 215
 216 /* Info used by acpi_ns_initialize_devices */
 217
 218 struct acpi_device_walk_info {
 219         struct acpi_table_desc *table_desc;
 220         struct acpi_evaluate_info *evaluate_info;
 221         u32 device_count;
 222         u32 num_STA;
 223         u32 num_INI;
 224 };
 225
 226 /* TBD: [Restructure] Merge with struct above */
 227
 228 struct acpi_walk_info {
 229         u32 debug_level;
 230         u32 count;
 231         acpi_owner_id owner_id;
 232         u8 display_type;
 233 };
 234
 235 /* Display Types */
 236
 237 #define ACPI_DISPLAY_SUMMARY        (u8) 0
 238 #define ACPI_DISPLAY_OBJECTS        (u8) 1
 239 #define ACPI_DISPLAY_MASK           (u8) 1
 240
 241 #define ACPI_DISPLAY_SHORT          (u8) 2
 242
 243 #endif