1 /******************************************************************************
3 * Name: acstruct.h - Internal structs
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2006, R. Byron Moore
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44 #ifndef __ACSTRUCT_H__
45 #define __ACSTRUCT_H__
47 /*****************************************************************************
49 * Tree walking typedefs and structs
51 ****************************************************************************/
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.
57 #define ACPI_NEXT_OP_DOWNWARD 1
58 #define ACPI_NEXT_OP_UPWARD 2
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
66 struct acpi_walk_state {
67 u8 data_type; /* To differentiate various internal objs MUST BE FIRST! */
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 */
75 u16 opcode; /* Current AML opcode */
77 u8 pass_number; /* Parse pass during table load */
78 u32 arg_count; /* push for fixed or var args */
81 u32 method_breakpoint; /* For single stepping */
82 u32 user_breakpoint; /* User AML breakpoint */
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 */
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 */
117 /* Info used by acpi_ps_init_objects */
119 struct acpi_init_walk_info {
131 struct acpi_table_desc *table_desc;
134 /* Info used by acpi_ns_initialize_devices */
136 struct acpi_device_walk_info {
140 struct acpi_table_desc *table_desc;
143 /* TBD: [Restructure] Merge with struct above */
145 struct acpi_walk_info {
148 acpi_owner_id owner_id;
154 #define ACPI_DISPLAY_SUMMARY (u8) 0
155 #define ACPI_DISPLAY_OBJECTS (u8) 1
156 #define ACPI_DISPLAY_MASK (u8) 1
158 #define ACPI_DISPLAY_SHORT (u8) 2
160 struct acpi_get_devices_info {
161 acpi_walk_callback user_function;
166 union acpi_aml_operands {
167 union acpi_operand_object *operands[7];
170 struct acpi_object_integer *type;
171 struct acpi_object_integer *code;
172 struct acpi_object_integer *argument;
177 union acpi_operand_object *source;
178 struct acpi_object_integer *index;
179 union acpi_operand_object *target;
184 union acpi_operand_object *source;
185 struct acpi_object_integer *index;
186 struct acpi_object_integer *length;
187 union acpi_operand_object *target;
192 /* Internal method parameter list */
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;
201 u8 return_object_type;
204 /* Types for parameter_type above */
206 #define ACPI_PARAM_ARGS 0
207 #define ACPI_PARAM_GPE 1