1 /******************************************************************************
3 * Name: acstruct.h - Internal structs
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2005, R. Byron Moore
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44 #ifndef __ACSTRUCT_H__
45 #define __ACSTRUCT_H__
48 /*****************************************************************************
50 * Tree walking typedefs and structs
52 ****************************************************************************/
56 * Walk state - current state of a parse tree walk. Used for both a leisurely stroll through
57 * the tree (for whatever reason), and for control method execution.
59 #define ACPI_NEXT_OP_DOWNWARD 1
60 #define ACPI_NEXT_OP_UPWARD 2
62 #define ACPI_WALK_NON_METHOD 0
63 #define ACPI_WALK_METHOD 1
64 #define ACPI_WALK_METHOD_RESTART 2
65 #define ACPI_WALK_CONST_REQUIRED 3
66 #define ACPI_WALK_CONST_OPTIONAL 4
68 struct acpi_walk_state
70 u8 data_type
; /* To differentiate various internal objs MUST BE FIRST!*/\
72 acpi_owner_id owner_id
; /* Owner of objects created during the walk */
73 u8 last_predicate
; /* Result of last predicate */
74 u8 current_result
; /* */
75 u8 next_op_info
; /* Info about next_op */
76 u8 num_operands
; /* Stack pointer for Operands[] array */
78 u16 opcode
; /* Current AML opcode */
80 u8 pass_number
; /* Parse pass during table load */
81 u32 arg_count
; /* push for fixed or var args */
84 u32 method_breakpoint
; /* For single stepping */
85 u32 user_breakpoint
; /* User AML breakpoint */
90 struct acpi_namespace_node arguments
[ACPI_METHOD_NUM_ARGS
]; /* Control method arguments */
91 union acpi_operand_object
**caller_return_desc
;
92 union acpi_generic_state
*control_state
; /* List of control states (nested IFs) */
93 struct acpi_namespace_node
*deferred_node
; /* Used when executing deferred opcodes */
94 struct acpi_gpe_event_info
*gpe_event_info
; /* Info for GPE (_Lxx/_Exx methods only */
95 union acpi_operand_object
*implicit_return_obj
;
96 struct acpi_namespace_node local_variables
[ACPI_METHOD_NUM_LOCALS
]; /* Control method locals */
97 struct acpi_namespace_node
*method_call_node
; /* Called method Node*/
98 union acpi_parse_object
*method_call_op
; /* method_call Op if running a method */
99 union acpi_operand_object
*method_desc
; /* Method descriptor if running a method */
100 struct acpi_namespace_node
*method_node
; /* Method node if running a method. */
101 union acpi_parse_object
*op
; /* Current parser op */
102 union acpi_operand_object
*operands
[ACPI_OBJ_NUM_OPERANDS
+1]; /* Operands passed to the interpreter (+1 for NULL terminator) */
103 const struct acpi_opcode_info
*op_info
; /* Info on current opcode */
104 union acpi_parse_object
*origin
; /* Start of walk [Obsolete] */
105 union acpi_operand_object
**params
;
106 struct acpi_parse_state parser_state
; /* Current state of parser */
107 union acpi_operand_object
*result_obj
;
108 union acpi_generic_state
*results
; /* Stack of accumulated results */
109 union acpi_operand_object
*return_desc
; /* Return object, if any */
110 union acpi_generic_state
*scope_info
; /* Stack of nested scopes */
112 union acpi_parse_object
*prev_op
; /* Last op that was processed */
113 union acpi_parse_object
*next_op
; /* next op to be processed */
114 acpi_parse_downwards descending_callback
;
115 acpi_parse_upwards ascending_callback
;
116 struct acpi_thread_state
*thread
;
117 struct acpi_walk_state
*next
; /* Next walk_state in list */
121 /* Info used by acpi_ps_init_objects */
123 struct acpi_init_walk_info
136 struct acpi_table_desc
*table_desc
;
140 /* Info used by acpi_ns_initialize_devices */
142 struct acpi_device_walk_info
147 struct acpi_table_desc
*table_desc
;
151 /* TBD: [Restructure] Merge with struct above */
153 struct acpi_walk_info
156 acpi_owner_id owner_id
;
162 #define ACPI_DISPLAY_SUMMARY (u8) 0
163 #define ACPI_DISPLAY_OBJECTS (u8) 1
164 #define ACPI_DISPLAY_MASK (u8) 1
166 #define ACPI_DISPLAY_SHORT (u8) 2
168 struct acpi_get_devices_info
170 acpi_walk_callback user_function
;
176 union acpi_aml_operands
178 union acpi_operand_object
*operands
[7];
182 struct acpi_object_integer
*type
;
183 struct acpi_object_integer
*code
;
184 struct acpi_object_integer
*argument
;
190 union acpi_operand_object
*source
;
191 struct acpi_object_integer
*index
;
192 union acpi_operand_object
*target
;
198 union acpi_operand_object
*source
;
199 struct acpi_object_integer
*index
;
200 struct acpi_object_integer
*length
;
201 union acpi_operand_object
*target
;
207 /* Internal method parameter list */
209 struct acpi_parameter_info
211 struct acpi_namespace_node
*node
;
212 union acpi_operand_object
**parameters
;
213 union acpi_operand_object
*return_object
;
215 u8 return_object_type
;
218 /* Types for parameter_type above */
220 #define ACPI_PARAM_ARGS 0
221 #define ACPI_PARAM_GPE 1