1 /******************************************************************************
2 *
3 * Name: acstruct.h - Internal structs
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2007, R. Byron Moore
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44 #ifndef __ACSTRUCT_H__
45 #define __ACSTRUCT_H__
46
47 /* acpisrc:struct_defs -- for acpisrc conversion */
48
49 /*****************************************************************************
50 *
51 * Tree walking typedefs and structs
52 *
53 ****************************************************************************/
54
55 /*
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
58 * execution.
59 */
60 #define ACPI_NEXT_OP_DOWNWARD 1
61 #define ACPI_NEXT_OP_UPWARD 2
62
63 /*
64 * Groups of definitions for walk_type used for different implementations of
65 * walkers (never simultaneously) - flags for interpreter:
66 */
67 #define ACPI_WALK_NON_METHOD 0
68 #define ACPI_WALK_METHOD 0x01
69 #define ACPI_WALK_METHOD_RESTART 0x02
70
71 /* Flags for i_aSL compiler only */
72
73 #define ACPI_WALK_CONST_REQUIRED 0x10
74 #define ACPI_WALK_CONST_OPTIONAL 0x20
75
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 */
79 u8 walk_type;
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 acpi_owner_id owner_id; /* Owner of objects created during the walk */
84 u8 last_predicate; /* Result of last predicate */
85 u8 current_result;
86 u8 return_used;
87 u8 scope_depth;
88 u8 pass_number; /* Parse pass during table load */
89 u32 aml_offset;
90 u32 arg_types;
91 u32 method_breakpoint; /* For single stepping */
92 u32 user_breakpoint; /* User AML breakpoint */
93 u32 parse_flags;
94
95 struct acpi_parse_state parser_state; /* Current state of parser */
96 u32 prev_arg_types;
97 u32 arg_count; /* push for fixed or var args */
98
99 struct acpi_namespace_node arguments[ACPI_METHOD_NUM_ARGS]; /* Control method arguments */
100 struct acpi_namespace_node local_variables[ACPI_METHOD_NUM_LOCALS]; /* Control method locals */
101 union acpi_operand_object *operands[ACPI_OBJ_NUM_OPERANDS + 1]; /* Operands passed to the interpreter (+1 for NULL terminator) */
102 union acpi_operand_object **params;
103
104 u8 *aml_last_while;
105 union acpi_operand_object **caller_return_desc;
106 union acpi_generic_state *control_state; /* List of control states (nested IFs) */
107 struct acpi_namespace_node *deferred_node; /* Used when executing deferred opcodes */
108 struct acpi_gpe_event_info *gpe_event_info; /* Info for GPE (_Lxx/_Exx methods only */
109 union acpi_operand_object *implicit_return_obj;
110 struct acpi_namespace_node *method_call_node; /* Called method Node */
111 union acpi_parse_object *method_call_op; /* method_call Op if running a method */
112 union acpi_operand_object *method_desc; /* Method descriptor if running a method */
113 struct acpi_namespace_node *method_node; /* Method node if running a method. */
114 union acpi_parse_object *op; /* Current parser op */
115 const struct acpi_opcode_info *op_info; /* Info on current opcode */
116 union acpi_parse_object *origin; /* Start of walk [Obsolete] */
117 union acpi_operand_object *result_obj;
118 union acpi_generic_state *results; /* Stack of accumulated results */
119 union acpi_operand_object *return_desc; /* Return object, if any */
120 union acpi_generic_state *scope_info; /* Stack of nested scopes */
121 union acpi_parse_object *prev_op; /* Last op that was processed */
122 union acpi_parse_object *next_op; /* next op to be processed */
123 struct acpi_thread_state *thread;
124 acpi_parse_downwards descending_callback;
125 acpi_parse_upwards ascending_callback;
126 };
127
128 /* Info used by acpi_ps_init_objects */
129
130 struct acpi_init_walk_info {
131 u16 method_count;
132 u16 device_count;
133 u16 op_region_count;
134 u16 field_count;
135 u16 buffer_count;
136 u16 package_count;
137 u16 op_region_init;
138 u16 field_init;
139 u16 buffer_init;
140 u16 package_init;
141 u16 object_count;
142 acpi_owner_id owner_id;
143 acpi_native_uint table_index;
144 };
145
146 struct acpi_get_devices_info {
147 acpi_walk_callback user_function;
148 void *context;
149 const char *hid;
150 };
151
152 union acpi_aml_operands {
153 union acpi_operand_object *operands[7];
154
155 struct {
156 struct acpi_object_integer *type;
157 struct acpi_object_integer *code;
158 struct acpi_object_integer *argument;
159
160 } fatal;
161
162 struct {
163 union acpi_operand_object *source;
164 struct acpi_object_integer *index;
165 union acpi_operand_object *target;
166
167 } index;
168
169 struct {
170 union acpi_operand_object *source;
171 struct acpi_object_integer *index;
172 struct acpi_object_integer *length;
173 union acpi_operand_object *target;
174
175 } mid;
176 };
177
178 /*
179 * Structure used to pass object evaluation parameters.
180 * Purpose is to reduce CPU stack use.
181 */
182 struct acpi_evaluate_info {
183 struct acpi_namespace_node *prefix_node;
184 char *pathname;
185 union acpi_operand_object *obj_desc;
186 union acpi_operand_object **parameters;
187 struct acpi_namespace_node *resolved_node;
188 union acpi_operand_object *return_object;
189 u8 pass_number;
190 u8 parameter_type;
191 u8 return_object_type;
192 u8 flags;
193 };
194
195 /* Types for parameter_type above */
196
197 #define ACPI_PARAM_ARGS 0
198 #define ACPI_PARAM_GPE 1
199
200 /* Values for Flags above */
201
202 #define ACPI_IGNORE_RETURN_VALUE 1
203
204 /* Info used by acpi_ns_initialize_devices */
205
206 struct acpi_device_walk_info {
207 u16 device_count;
208 u16 num_STA;
209 u16 num_INI;
210 struct acpi_table_desc *table_desc;
211 struct acpi_evaluate_info *evaluate_info;
212 };
213
214 /* TBD: [Restructure] Merge with struct above */
215
216 struct acpi_walk_info {
217 u32 debug_level;
218 u32 count;
219 acpi_owner_id owner_id;
220 u8 display_type;
221 };
222
223 /* Display Types */
224
225 #define ACPI_DISPLAY_SUMMARY (u8) 0
226 #define ACPI_DISPLAY_OBJECTS (u8) 1
227 #define ACPI_DISPLAY_MASK (u8) 1
228
229 #define ACPI_DISPLAY_SHORT (u8) 2
230
231 #endif
232
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