1 /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
2 /******************************************************************************
3 *
4 * Name: acstruct.h - Internal structs
5 *
6 * Copyright (C) 2000 - 2019, 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 u16 method_nesting_depth;
64 u8 method_is_nested;
65
66 struct acpi_namespace_node arguments[ACPI_METHOD_NUM_ARGS]; /* Control method arguments */
67 struct acpi_namespace_node local_variables[ACPI_METHOD_NUM_LOCALS]; /* Control method locals */
68 union acpi_operand_object *operands[ACPI_OBJ_NUM_OPERANDS + 1]; /* Operands passed to the interpreter (+1 for NULL terminator) */
69 union acpi_operand_object **params;
70
71 u8 *aml_last_while;
72 union acpi_operand_object **caller_return_desc;
73 union acpi_generic_state *control_state; /* List of control states (nested IFs) */
74 struct acpi_namespace_node *deferred_node; /* Used when executing deferred opcodes */
75 union acpi_operand_object *implicit_return_obj;
76 struct acpi_namespace_node *method_call_node; /* Called method Node */
77 union acpi_parse_object *method_call_op; /* method_call Op if running a method */
78 union acpi_operand_object *method_desc; /* Method descriptor if running a method */
79 struct acpi_namespace_node *method_node; /* Method node if running a method */
80 char *method_pathname; /* Full pathname of running method */
81 union acpi_parse_object *op; /* Current parser op */
82 const struct acpi_opcode_info *op_info; /* Info on current opcode */
83 union acpi_parse_object *origin; /* Start of walk [Obsolete] */
84 union acpi_operand_object *result_obj;
85 union acpi_generic_state *results; /* Stack of accumulated results */
86 union acpi_operand_object *return_desc; /* Return object, if any */
87 union acpi_generic_state *scope_info; /* Stack of nested scopes */
88 union acpi_parse_object *prev_op; /* Last op that was processed */
89 union acpi_parse_object *next_op; /* next op to be processed */
90 struct acpi_thread_state *thread;
91 acpi_parse_downwards descending_callback;
92 acpi_parse_upwards ascending_callback;
93 };
94
95 /* Info used by acpi_ns_initialize_objects and acpi_ds_initialize_objects */
96
97 struct acpi_init_walk_info {
98 u32 table_index;
99 u32 object_count;
100 u32 method_count;
101 u32 serial_method_count;
102 u32 non_serial_method_count;
103 u32 serialized_method_count;
104 u32 device_count;
105 u32 op_region_count;
106 u32 field_count;
107 u32 buffer_count;
108 u32 package_count;
109 u32 op_region_init;
110 u32 field_init;
111 u32 buffer_init;
112 u32 package_init;
113 acpi_owner_id owner_id;
114 };
115
116 struct acpi_get_devices_info {
117 acpi_walk_callback user_function;
118 void *context;
119 const char *hid;
120 };
121
122 union acpi_aml_operands {
123 union acpi_operand_object *operands[7];
124
125 struct {
126 struct acpi_object_integer *type;
127 struct acpi_object_integer *code;
128 struct acpi_object_integer *argument;
129
130 } fatal;
131
132 struct {
133 union acpi_operand_object *source;
134 struct acpi_object_integer *index;
135 union acpi_operand_object *target;
136
137 } index;
138
139 struct {
140 union acpi_operand_object *source;
141 struct acpi_object_integer *index;
142 struct acpi_object_integer *length;
143 union acpi_operand_object *target;
144
145 } mid;
146 };
147
148 /*
149 * Structure used to pass object evaluation information and parameters.
150 * Purpose is to reduce CPU stack use.
151 */
152 struct acpi_evaluate_info {
153 /* The first 3 elements are passed by the caller to acpi_ns_evaluate */
154
155 struct acpi_namespace_node *prefix_node; /* Input: starting node */
156 const char *relative_pathname; /* Input: path relative to prefix_node */
157 union acpi_operand_object **parameters; /* Input: argument list */
158
159 struct acpi_namespace_node *node; /* Resolved node (prefix_node:relative_pathname) */
160 union acpi_operand_object *obj_desc; /* Object attached to the resolved node */
161 char *full_pathname; /* Full pathname of the resolved node */
162
163 const union acpi_predefined_info *predefined; /* Used if Node is a predefined name */
164 union acpi_operand_object *return_object; /* Object returned from the evaluation */
165 union acpi_operand_object *parent_package; /* Used if return object is a Package */
166
167 u32 return_flags; /* Used for return value analysis */
168 u32 return_btype; /* Bitmapped type of the returned object */
169 u16 param_count; /* Count of the input argument list */
170 u16 node_flags; /* Same as Node->Flags */
171 u8 pass_number; /* Parser pass number */
172 u8 return_object_type; /* Object type of the returned object */
173 u8 flags; /* General flags */
174 };
175
176 /* Values for Flags above */
177
178 #define ACPI_IGNORE_RETURN_VALUE 1
179
180 /* Defines for return_flags field above */
181
182 #define ACPI_OBJECT_REPAIRED 1
183 #define ACPI_OBJECT_WRAPPED 2
184
185 /* Info used by acpi_ns_initialize_devices */
186
187 struct acpi_device_walk_info {
188 struct acpi_table_desc *table_desc;
189 struct acpi_evaluate_info *evaluate_info;
190 u32 device_count;
191 u32 num_STA;
192 u32 num_INI;
193 };
194
195 /* TBD: [Restructure] Merge with struct above */
196
197 struct acpi_walk_info {
198 u32 debug_level;
199 u32 count;
200 acpi_owner_id owner_id;
201 u8 display_type;
202 };
203
204 /* Display Types */
205
206 #define ACPI_DISPLAY_SUMMARY (u8) 0
207 #define ACPI_DISPLAY_OBJECTS (u8) 1
208 #define ACPI_DISPLAY_MASK (u8) 1
209
210 #define ACPI_DISPLAY_SHORT (u8) 2
211
212 #endif