drivers/acpi/acpica/acstruct.h

   1 /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
   2 /******************************************************************************
   3  *
   4  * Name: acstruct.h - Internal structs
   5  *
   6  * Copyright (C) 2000 - 2018, Intel Corp.
   7  *
   8  *****************************************************************************/
   9
  10 #ifndef __ACSTRUCT_H__
  11 #define __ACSTRUCT_H__
  12
  13 /* acpisrc:struct_defs -- for acpisrc conversion */
  14
  15 /*****************************************************************************
  16  *
  17  * Tree walking typedefs and structs
  18  *
  19  ****************************************************************************/
  20
  21 /*
  22  * Walk state - current state of a parse tree walk. Used for both a leisurely
  23  * stroll through the tree (for whatever reason), and for control method
  24  * execution.
  25  */
  26 #define ACPI_NEXT_OP_DOWNWARD       1
  27 #define ACPI_NEXT_OP_UPWARD         2
  28
  29 /*
  30  * Groups of definitions for walk_type used for different implementations of
  31  * walkers (never simultaneously) - flags for interpreter:
  32  */
  33 #define ACPI_WALK_NON_METHOD        0
  34 #define ACPI_WALK_METHOD            0x01
  35 #define ACPI_WALK_METHOD_RESTART    0x02
  36
  37 struct acpi_walk_state {
  38         struct acpi_walk_state *next;   /* Next walk_state in list */
  39         u8 descriptor_type;     /* To differentiate various internal objs */
  40         u8 walk_type;
  41         u16 opcode;             /* Current AML opcode */
  42         u8 next_op_info;        /* Info about next_op */
  43         u8 num_operands;        /* Stack pointer for Operands[] array */
  44         u8 operand_index;       /* Index into operand stack, to be used by acpi_ds_obj_stack_push */
  45         acpi_owner_id owner_id; /* Owner of objects created during the walk */
  46         u8 last_predicate;      /* Result of last predicate */
  47         u8 current_result;
  48         u8 return_used;
  49         u8 scope_depth;
  50         u8 pass_number;         /* Parse pass during table load */
  51         u8 namespace_override;  /* Override existing objects */
  52         u8 result_size;         /* Total elements for the result stack */
  53         u8 result_count;        /* Current number of occupied elements of result stack */
  54         u8 *aml;
  55         u32 arg_types;
  56         u32 method_breakpoint;  /* For single stepping */
  57         u32 user_breakpoint;    /* User AML breakpoint */
  58         u32 parse_flags;
  59
  60         struct acpi_parse_state parser_state;   /* Current state of parser */
  61         u32 prev_arg_types;
  62         u32 arg_count;          /* push for fixed or var args */
  63
  64         struct acpi_namespace_node arguments[ACPI_METHOD_NUM_ARGS];     /* Control method arguments */
  65         struct acpi_namespace_node local_variables[ACPI_METHOD_NUM_LOCALS];     /* Control method locals */
  66         union acpi_operand_object *operands[ACPI_OBJ_NUM_OPERANDS + 1]; /* Operands passed to the interpreter (+1 for NULL terminator) */
  67         union acpi_operand_object **params;
  68
  69         u8 *aml_last_while;
  70         union acpi_operand_object **caller_return_desc;
  71         union acpi_generic_state *control_state;        /* List of control states (nested IFs) */
  72         struct acpi_namespace_node *deferred_node;      /* Used when executing deferred opcodes */
  73         union acpi_operand_object *implicit_return_obj;
  74         struct acpi_namespace_node *method_call_node;   /* Called method Node */
  75         union acpi_parse_object *method_call_op;        /* method_call Op if running a method */
  76         union acpi_operand_object *method_desc; /* Method descriptor if running a method */
  77         struct acpi_namespace_node *method_node;        /* Method node if running a method. */
  78         union acpi_parse_object *op;    /* Current parser op */
  79         const struct acpi_opcode_info *op_info; /* Info on current opcode */
  80         union acpi_parse_object *origin;        /* Start of walk [Obsolete] */
  81         union acpi_operand_object *result_obj;
  82         union acpi_generic_state *results;      /* Stack of accumulated results */
  83         union acpi_operand_object *return_desc; /* Return object, if any */
  84         union acpi_generic_state *scope_info;   /* Stack of nested scopes */
  85         union acpi_parse_object *prev_op;       /* Last op that was processed */
  86         union acpi_parse_object *next_op;       /* next op to be processed */
  87         struct acpi_thread_state *thread;
  88         acpi_parse_downwards descending_callback;
  89         acpi_parse_upwards ascending_callback;
  90 };
  91
  92 /* Info used by acpi_ns_initialize_objects and acpi_ds_initialize_objects */
  93
  94 struct acpi_init_walk_info {
  95         u32 table_index;
  96         u32 object_count;
  97         u32 method_count;
  98         u32 serial_method_count;
  99         u32 non_serial_method_count;
 100         u32 serialized_method_count;
 101         u32 device_count;
 102         u32 op_region_count;
 103         u32 field_count;
 104         u32 buffer_count;
 105         u32 package_count;
 106         u32 op_region_init;
 107         u32 field_init;
 108         u32 buffer_init;
 109         u32 package_init;
 110         acpi_owner_id owner_id;
 111 };
 112
 113 struct acpi_get_devices_info {
 114         acpi_walk_callback user_function;
 115         void *context;
 116         const char *hid;
 117 };
 118
 119 union acpi_aml_operands {
 120         union acpi_operand_object *operands[7];
 121
 122         struct {
 123                 struct acpi_object_integer *type;
 124                 struct acpi_object_integer *code;
 125                 struct acpi_object_integer *argument;
 126
 127         } fatal;
 128
 129         struct {
 130                 union acpi_operand_object *source;
 131                 struct acpi_object_integer *index;
 132                 union acpi_operand_object *target;
 133
 134         } index;
 135
 136         struct {
 137                 union acpi_operand_object *source;
 138                 struct acpi_object_integer *index;
 139                 struct acpi_object_integer *length;
 140                 union acpi_operand_object *target;
 141
 142         } mid;
 143 };
 144
 145 /*
 146  * Structure used to pass object evaluation information and parameters.
 147  * Purpose is to reduce CPU stack use.
 148  */
 149 struct acpi_evaluate_info {
 150         /* The first 3 elements are passed by the caller to acpi_ns_evaluate */
 151
 152         struct acpi_namespace_node *prefix_node;        /* Input: starting node */
 153         const char *relative_pathname;  /* Input: path relative to prefix_node */
 154         union acpi_operand_object **parameters; /* Input: argument list */
 155
 156         struct acpi_namespace_node *node;       /* Resolved node (prefix_node:relative_pathname) */
 157         union acpi_operand_object *obj_desc;    /* Object attached to the resolved node */
 158         char *full_pathname;    /* Full pathname of the resolved node */
 159
 160         const union acpi_predefined_info *predefined;   /* Used if Node is a predefined name */
 161         union acpi_operand_object *return_object;       /* Object returned from the evaluation */
 162         union acpi_operand_object *parent_package;      /* Used if return object is a Package */
 163
 164         u32 return_flags;       /* Used for return value analysis */
 165         u32 return_btype;       /* Bitmapped type of the returned object */
 166         u16 param_count;        /* Count of the input argument list */
 167         u8 pass_number;         /* Parser pass number */
 168         u8 return_object_type;  /* Object type of the returned object */
 169         u8 node_flags;          /* Same as Node->Flags */
 170         u8 flags;               /* General flags */
 171 };
 172
 173 /* Values for Flags above */
 174
 175 #define ACPI_IGNORE_RETURN_VALUE    1
 176
 177 /* Defines for return_flags field above */
 178
 179 #define ACPI_OBJECT_REPAIRED        1
 180 #define ACPI_OBJECT_WRAPPED         2
 181
 182 /* Info used by acpi_ns_initialize_devices */
 183
 184 struct acpi_device_walk_info {
 185         struct acpi_table_desc *table_desc;
 186         struct acpi_evaluate_info *evaluate_info;
 187         u32 device_count;
 188         u32 num_STA;
 189         u32 num_INI;
 190 };
 191
 192 /* TBD: [Restructure] Merge with struct above */
 193
 194 struct acpi_walk_info {
 195         u32 debug_level;
 196         u32 count;
 197         acpi_owner_id owner_id;
 198         u8 display_type;
 199 };
 200
 201 /* Display Types */
 202
 203 #define ACPI_DISPLAY_SUMMARY        (u8) 0
 204 #define ACPI_DISPLAY_OBJECTS        (u8) 1
 205 #define ACPI_DISPLAY_MASK           (u8) 1
 206
 207 #define ACPI_DISPLAY_SHORT          (u8) 2
 208
 209 #endif