1 /******************************************************************************
3 * Name: acstruct.h - Internal structs
5 *****************************************************************************/
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44 #ifndef __ACSTRUCT_H__
45 #define __ACSTRUCT_H__
47 /* acpisrc:struct_defs -- for acpisrc conversion */
49 /*****************************************************************************
51 * Tree walking typedefs and structs
53 ****************************************************************************/
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
60 #define ACPI_NEXT_OP_DOWNWARD 1
61 #define ACPI_NEXT_OP_UPWARD 2
64 * Groups of definitions for walk_type used for different implementations of
65 * walkers (never simultaneously) - flags for interpreter:
67 #define ACPI_WALK_NON_METHOD 0
68 #define ACPI_WALK_METHOD 0x01
69 #define ACPI_WALK_METHOD_RESTART 0x02
71 /* Flags for i_aSL compiler only */
73 #define ACPI_WALK_CONST_REQUIRED 0x10
74 #define ACPI_WALK_CONST_OPTIONAL 0x20
76 struct acpi_walk_state {
77 struct acpi_walk_state *next; /* Next walk_state in list */
78 u8 descriptor_type; /* To differentiate various internal objs */
80 u16 opcode; /* Current AML opcode */
81 u8 next_op_info; /* Info about next_op */
82 u8 num_operands; /* Stack pointer for Operands[] array */
83 u8 operand_index; /* Index into operand stack, to be used by acpi_ds_obj_stack_push */
84 acpi_owner_id owner_id; /* Owner of objects created during the walk */
85 u8 last_predicate; /* Result of last predicate */
89 u8 pass_number; /* Parse pass during table load */
90 u8 result_size; /* Total elements for the result stack */
91 u8 result_count; /* Current number of occupied elements of result stack */
94 u32 method_breakpoint; /* For single stepping */
95 u32 user_breakpoint; /* User AML breakpoint */
98 struct acpi_parse_state parser_state; /* Current state of parser */
100 u32 arg_count; /* push for fixed or var args */
102 struct acpi_namespace_node arguments[ACPI_METHOD_NUM_ARGS]; /* Control method arguments */
103 struct acpi_namespace_node local_variables[ACPI_METHOD_NUM_LOCALS]; /* Control method locals */
104 union acpi_operand_object *operands[ACPI_OBJ_NUM_OPERANDS + 1]; /* Operands passed to the interpreter (+1 for NULL terminator) */
105 union acpi_operand_object **params;
108 union acpi_operand_object **caller_return_desc;
109 union acpi_generic_state *control_state; /* List of control states (nested IFs) */
110 struct acpi_namespace_node *deferred_node; /* Used when executing deferred opcodes */
111 union acpi_operand_object *implicit_return_obj;
112 struct acpi_namespace_node *method_call_node; /* Called method Node */
113 union acpi_parse_object *method_call_op; /* method_call Op if running a method */
114 union acpi_operand_object *method_desc; /* Method descriptor if running a method */
115 struct acpi_namespace_node *method_node; /* Method node if running a method. */
116 union acpi_parse_object *op; /* Current parser op */
117 const struct acpi_opcode_info *op_info; /* Info on current opcode */
118 union acpi_parse_object *origin; /* Start of walk [Obsolete] */
119 union acpi_operand_object *result_obj;
120 union acpi_generic_state *results; /* Stack of accumulated results */
121 union acpi_operand_object *return_desc; /* Return object, if any */
122 union acpi_generic_state *scope_info; /* Stack of nested scopes */
123 union acpi_parse_object *prev_op; /* Last op that was processed */
124 union acpi_parse_object *next_op; /* next op to be processed */
125 struct acpi_thread_state *thread;
126 acpi_parse_downwards descending_callback;
127 acpi_parse_upwards ascending_callback;
130 /* Info used by acpi_ps_init_objects */
132 struct acpi_init_walk_info {
144 acpi_owner_id owner_id;
148 struct acpi_get_devices_info {
149 acpi_walk_callback user_function;
154 union acpi_aml_operands {
155 union acpi_operand_object *operands[7];
158 struct acpi_object_integer *type;
159 struct acpi_object_integer *code;
160 struct acpi_object_integer *argument;
165 union acpi_operand_object *source;
166 struct acpi_object_integer *index;
167 union acpi_operand_object *target;
172 union acpi_operand_object *source;
173 struct acpi_object_integer *index;
174 struct acpi_object_integer *length;
175 union acpi_operand_object *target;
181 * Structure used to pass object evaluation parameters.
182 * Purpose is to reduce CPU stack use.
184 struct acpi_evaluate_info {
185 struct acpi_namespace_node *prefix_node;
187 union acpi_operand_object *obj_desc;
188 union acpi_operand_object **parameters;
189 struct acpi_namespace_node *resolved_node;
190 union acpi_operand_object *return_object;
193 u8 return_object_type;
197 /* Values for Flags above */
199 #define ACPI_IGNORE_RETURN_VALUE 1
201 /* Info used by acpi_ns_initialize_devices */
203 struct acpi_device_walk_info {
207 struct acpi_table_desc *table_desc;
208 struct acpi_evaluate_info *evaluate_info;
211 /* TBD: [Restructure] Merge with struct above */
213 struct acpi_walk_info {
216 acpi_owner_id owner_id;
222 #define ACPI_DISPLAY_SUMMARY (u8) 0
223 #define ACPI_DISPLAY_OBJECTS (u8) 1
224 #define ACPI_DISPLAY_MASK (u8) 1
226 #define ACPI_DISPLAY_SHORT (u8) 2