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1da177e4 LT |
1 | |
2 | /****************************************************************************** | |
3 | * | |
61686124 | 4 | * Name: acobject.h - Definition of union acpi_operand_object (Internal object only) |
1da177e4 LT |
5 | * |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
a8357b0c | 9 | * Copyright (C) 2000 - 2010, Intel Corp. |
1da177e4 LT |
10 | * All rights reserved. |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * 1. Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions, and the following disclaimer, | |
17 | * without modification. | |
18 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
19 | * substantially similar to the "NO WARRANTY" disclaimer below | |
20 | * ("Disclaimer") and any redistribution must be conditioned upon | |
21 | * including a substantially similar Disclaimer requirement for further | |
22 | * binary redistribution. | |
23 | * 3. Neither the names of the above-listed copyright holders nor the names | |
24 | * of any contributors may be used to endorse or promote products derived | |
25 | * from this software without specific prior written permission. | |
26 | * | |
27 | * Alternatively, this software may be distributed under the terms of the | |
28 | * GNU General Public License ("GPL") version 2 as published by the Free | |
29 | * Software Foundation. | |
30 | * | |
31 | * NO WARRANTY | |
32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
33 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
34 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
35 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
36 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
37 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
38 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
41 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
42 | * POSSIBILITY OF SUCH DAMAGES. | |
43 | */ | |
44 | ||
45 | #ifndef _ACOBJECT_H | |
46 | #define _ACOBJECT_H | |
47 | ||
61686124 BM |
48 | /* acpisrc:struct_defs -- for acpisrc conversion */ |
49 | ||
1da177e4 | 50 | /* |
61686124 | 51 | * The union acpi_operand_object is used to pass AML operands from the dispatcher |
1da177e4 | 52 | * to the interpreter, and to keep track of the various handlers such as |
61686124 | 53 | * address space handlers and notify handlers. The object is a constant |
1da177e4 | 54 | * size in order to allow it to be cached and reused. |
7c9626ba BM |
55 | * |
56 | * Note: The object is optimized to be aligned and will not work if it is | |
57 | * byte-packed. | |
1da177e4 | 58 | */ |
7c9626ba BM |
59 | #if ACPI_MACHINE_WIDTH == 64 |
60 | #pragma pack(8) | |
61 | #else | |
62 | #pragma pack(4) | |
63 | #endif | |
1da177e4 LT |
64 | |
65 | /******************************************************************************* | |
66 | * | |
67 | * Common Descriptors | |
68 | * | |
69 | ******************************************************************************/ | |
70 | ||
71 | /* | |
72 | * Common area for all objects. | |
73 | * | |
61686124 BM |
74 | * descriptor_type is used to differentiate between internal descriptors, and |
75 | * must be in the same place across all descriptors | |
793c2388 BM |
76 | * |
77 | * Note: The descriptor_type and Type fields must appear in the identical | |
78 | * position in both the struct acpi_namespace_node and union acpi_operand_object | |
79 | * structures. | |
1da177e4 | 80 | */ |
61686124 BM |
81 | #define ACPI_OBJECT_COMMON_HEADER \ |
82 | union acpi_operand_object *next_object; /* Objects linked to parent NS node */\ | |
83 | u8 descriptor_type; /* To differentiate various internal objs */\ | |
84 | u8 type; /* acpi_object_type */\ | |
85 | u16 reference_count; /* For object deletion management */\ | |
86 | u8 flags; | |
87 | /* | |
88 | * Note: There are 3 bytes available here before the | |
89 | * next natural alignment boundary (for both 32/64 cases) | |
90 | */ | |
91 | ||
92 | /* Values for Flag byte above */ | |
1da177e4 LT |
93 | |
94 | #define AOPOBJ_AML_CONSTANT 0x01 | |
95 | #define AOPOBJ_STATIC_POINTER 0x02 | |
96 | #define AOPOBJ_DATA_VALID 0x04 | |
97 | #define AOPOBJ_OBJECT_INITIALIZED 0x08 | |
98 | #define AOPOBJ_SETUP_COMPLETE 0x10 | |
99 | #define AOPOBJ_SINGLE_DATUM 0x20 | |
7cb7f45c | 100 | #define AOPOBJ_INVALID 0x40 /* Used if host OS won't allow an op_region address */ |
7f0c826a | 101 | #define AOPOBJ_MODULE_LEVEL 0x80 |
1da177e4 | 102 | |
1da177e4 LT |
103 | /****************************************************************************** |
104 | * | |
105 | * Basic data types | |
106 | * | |
107 | *****************************************************************************/ | |
108 | ||
4be44fcd LB |
109 | struct acpi_object_common { |
110 | ACPI_OBJECT_COMMON_HEADER}; | |
1da177e4 | 111 | |
4be44fcd | 112 | struct acpi_object_integer { |
7c9626ba | 113 | ACPI_OBJECT_COMMON_HEADER u8 fill[3]; /* Prevent warning on some compilers */ |
5df7e6cb | 114 | u64 value; |
1da177e4 LT |
115 | }; |
116 | ||
117 | /* | |
118 | * Note: The String and Buffer object must be identical through the Pointer | |
61686124 BM |
119 | * and length elements. There is code that depends on this. |
120 | * | |
121 | * Fields common to both Strings and Buffers | |
1da177e4 | 122 | */ |
61686124 BM |
123 | #define ACPI_COMMON_BUFFER_INFO(_type) \ |
124 | _type *pointer; \ | |
125 | u32 length; | |
126 | ||
4be44fcd | 127 | struct acpi_object_string { /* Null terminated, ASCII characters only */ |
61686124 | 128 | ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO(char) /* String in AML stream or allocated string */ |
1da177e4 LT |
129 | }; |
130 | ||
4be44fcd | 131 | struct acpi_object_buffer { |
61686124 | 132 | ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO(u8) /* Buffer in AML stream or allocated buffer */ |
4be44fcd | 133 | u32 aml_length; |
61686124 BM |
134 | u8 *aml_start; |
135 | struct acpi_namespace_node *node; /* Link back to parent node */ | |
1da177e4 LT |
136 | }; |
137 | ||
4be44fcd | 138 | struct acpi_object_package { |
61686124 | 139 | ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *node; /* Link back to parent node */ |
4be44fcd | 140 | union acpi_operand_object **elements; /* Array of pointers to acpi_objects */ |
61686124 BM |
141 | u8 *aml_start; |
142 | u32 aml_length; | |
143 | u32 count; /* # of elements in package */ | |
1da177e4 LT |
144 | }; |
145 | ||
1da177e4 LT |
146 | /****************************************************************************** |
147 | * | |
148 | * Complex data types | |
149 | * | |
150 | *****************************************************************************/ | |
151 | ||
4be44fcd | 152 | struct acpi_object_event { |
967440e3 | 153 | ACPI_OBJECT_COMMON_HEADER acpi_semaphore os_semaphore; /* Actual OS synchronization object */ |
1da177e4 LT |
154 | }; |
155 | ||
4be44fcd LB |
156 | struct acpi_object_mutex { |
157 | ACPI_OBJECT_COMMON_HEADER u8 sync_level; /* 0-15, specified in Mutex() call */ | |
158 | u16 acquisition_depth; /* Allow multiple Acquires, same thread */ | |
967440e3 | 159 | acpi_mutex os_mutex; /* Actual OS synchronization object */ |
ba886cd4 BM |
160 | acpi_thread_id thread_id; /* Current owner of the mutex */ |
161 | struct acpi_thread_state *owner_thread; /* Current owner of the mutex */ | |
4be44fcd LB |
162 | union acpi_operand_object *prev; /* Link for list of acquired mutexes */ |
163 | union acpi_operand_object *next; /* Link for list of acquired mutexes */ | |
164 | struct acpi_namespace_node *node; /* Containing namespace node */ | |
165 | u8 original_sync_level; /* Owner's original sync level (0-15) */ | |
1da177e4 LT |
166 | }; |
167 | ||
4be44fcd LB |
168 | struct acpi_object_region { |
169 | ACPI_OBJECT_COMMON_HEADER u8 space_id; | |
4be44fcd | 170 | struct acpi_namespace_node *node; /* Containing namespace node */ |
61686124 | 171 | union acpi_operand_object *handler; /* Handler for region access */ |
4be44fcd | 172 | union acpi_operand_object *next; |
4be44fcd | 173 | acpi_physical_address address; |
61686124 BM |
174 | u32 length; |
175 | }; | |
176 | ||
177 | struct acpi_object_method { | |
178 | ACPI_OBJECT_COMMON_HEADER u8 method_flags; | |
179 | u8 param_count; | |
967440e3 BM |
180 | u8 sync_level; |
181 | union acpi_operand_object *mutex; | |
61686124 | 182 | u8 *aml_start; |
e31c32cf LM |
183 | union { |
184 | ACPI_INTERNAL_METHOD implementation; | |
185 | union acpi_operand_object *handler; | |
186 | } extra; | |
187 | ||
61686124 BM |
188 | u32 aml_length; |
189 | u8 thread_count; | |
190 | acpi_owner_id owner_id; | |
1da177e4 LT |
191 | }; |
192 | ||
1da177e4 LT |
193 | /****************************************************************************** |
194 | * | |
195 | * Objects that can be notified. All share a common notify_info area. | |
196 | * | |
197 | *****************************************************************************/ | |
198 | ||
61686124 BM |
199 | /* |
200 | * Common fields for objects that support ASL notifications | |
201 | */ | |
202 | #define ACPI_COMMON_NOTIFY_INFO \ | |
203 | union acpi_operand_object *system_notify; /* Handler for system notifies */\ | |
204 | union acpi_operand_object *device_notify; /* Handler for driver notifies */\ | |
205 | union acpi_operand_object *handler; /* Handler for Address space */ | |
206 | ||
4be44fcd LB |
207 | struct acpi_object_notify_common { /* COMMON NOTIFY for POWER, PROCESSOR, DEVICE, and THERMAL */ |
208 | ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO}; | |
1da177e4 | 209 | |
4be44fcd | 210 | struct acpi_object_device { |
1da177e4 | 211 | ACPI_OBJECT_COMMON_HEADER |
4be44fcd | 212 | ACPI_COMMON_NOTIFY_INFO struct acpi_gpe_block_info *gpe_block; |
1da177e4 LT |
213 | }; |
214 | ||
4be44fcd LB |
215 | struct acpi_object_power_resource { |
216 | ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO u32 system_level; | |
217 | u32 resource_order; | |
1da177e4 LT |
218 | }; |
219 | ||
4be44fcd | 220 | struct acpi_object_processor { |
7c9626ba BM |
221 | ACPI_OBJECT_COMMON_HEADER |
222 | /* The next two fields take advantage of the 3-byte space before NOTIFY_INFO */ | |
223 | u8 proc_id; | |
61686124 | 224 | u8 length; |
fd350943 | 225 | ACPI_COMMON_NOTIFY_INFO acpi_io_address address; |
1da177e4 LT |
226 | }; |
227 | ||
4be44fcd LB |
228 | struct acpi_object_thermal_zone { |
229 | ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO}; | |
1da177e4 LT |
230 | |
231 | /****************************************************************************** | |
232 | * | |
233 | * Fields. All share a common header/info field. | |
234 | * | |
235 | *****************************************************************************/ | |
236 | ||
61686124 BM |
237 | /* |
238 | * Common bitfield for the field objects | |
239 | * "Field Datum" -- a datum from the actual field object | |
240 | * "Buffer Datum" -- a datum from a user buffer, read from or to be written to the field | |
241 | */ | |
242 | #define ACPI_COMMON_FIELD_INFO \ | |
243 | u8 field_flags; /* Access, update, and lock bits */\ | |
244 | u8 attribute; /* From access_as keyword */\ | |
245 | u8 access_byte_width; /* Read/Write size in bytes */\ | |
246 | struct acpi_namespace_node *node; /* Link back to parent node */\ | |
247 | u32 bit_length; /* Length of field in bits */\ | |
248 | u32 base_byte_offset; /* Byte offset within containing object */\ | |
249 | u32 value; /* Value to store into the Bank or Index register */\ | |
250 | u8 start_field_bit_offset;/* Bit offset within first field datum (0-63) */\ | |
251 | u8 access_bit_width; /* Read/Write size in bits (8-64) */ | |
252 | ||
4be44fcd | 253 | struct acpi_object_field_common { /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */ |
61686124 | 254 | ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Parent Operation Region object (REGION/BANK fields only) */ |
1da177e4 LT |
255 | }; |
256 | ||
4be44fcd LB |
257 | struct acpi_object_region_field { |
258 | ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Containing op_region object */ | |
1da177e4 LT |
259 | }; |
260 | ||
4be44fcd LB |
261 | struct acpi_object_bank_field { |
262 | ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Containing op_region object */ | |
263 | union acpi_operand_object *bank_obj; /* bank_select Register object */ | |
1da177e4 LT |
264 | }; |
265 | ||
4be44fcd LB |
266 | struct acpi_object_index_field { |
267 | ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO | |
268 | /* | |
b229cf92 | 269 | * No "RegionObj" pointer needed since the Index and Data registers |
4be44fcd LB |
270 | * are each field definitions unto themselves. |
271 | */ | |
272 | union acpi_operand_object *index_obj; /* Index register */ | |
273 | union acpi_operand_object *data_obj; /* Data register */ | |
1da177e4 LT |
274 | }; |
275 | ||
1da177e4 LT |
276 | /* The buffer_field is different in that it is part of a Buffer, not an op_region */ |
277 | ||
4be44fcd LB |
278 | struct acpi_object_buffer_field { |
279 | ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *buffer_obj; /* Containing Buffer object */ | |
1da177e4 LT |
280 | }; |
281 | ||
1da177e4 LT |
282 | /****************************************************************************** |
283 | * | |
284 | * Objects for handlers | |
285 | * | |
286 | *****************************************************************************/ | |
287 | ||
4be44fcd LB |
288 | struct acpi_object_notify_handler { |
289 | ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *node; /* Parent device */ | |
3f0be671 | 290 | u32 handler_type; |
4be44fcd LB |
291 | acpi_notify_handler handler; |
292 | void *context; | |
3f0be671 | 293 | struct acpi_object_notify_handler *next; |
1da177e4 LT |
294 | }; |
295 | ||
4be44fcd LB |
296 | struct acpi_object_addr_handler { |
297 | ACPI_OBJECT_COMMON_HEADER u8 space_id; | |
61686124 | 298 | u8 handler_flags; |
4be44fcd LB |
299 | acpi_adr_space_handler handler; |
300 | struct acpi_namespace_node *node; /* Parent device */ | |
301 | void *context; | |
302 | acpi_adr_space_setup setup; | |
303 | union acpi_operand_object *region_list; /* regions using this handler */ | |
304 | union acpi_operand_object *next; | |
1da177e4 LT |
305 | }; |
306 | ||
61686124 BM |
307 | /* Flags for address handler (handler_flags) */ |
308 | ||
309 | #define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED 0x01 | |
310 | ||
1da177e4 LT |
311 | /****************************************************************************** |
312 | * | |
313 | * Special internal objects | |
314 | * | |
315 | *****************************************************************************/ | |
316 | ||
317 | /* | |
1044f1f6 BM |
318 | * The Reference object is used for these opcodes: |
319 | * Arg[0-6], Local[0-7], index_op, name_op, ref_of_op, load_op, load_table_op, debug_op | |
320 | * The Reference.Class differentiates these types. | |
1da177e4 | 321 | */ |
4be44fcd | 322 | struct acpi_object_reference { |
1044f1f6 BM |
323 | ACPI_OBJECT_COMMON_HEADER u8 class; /* Reference Class */ |
324 | u8 target_type; /* Used for Index Op */ | |
325 | u8 reserved; | |
61686124 | 326 | void *object; /* name_op=>HANDLE to obj, index_op=>union acpi_operand_object */ |
1044f1f6 BM |
327 | struct acpi_namespace_node *node; /* ref_of or Namepath */ |
328 | union acpi_operand_object **where; /* Target of Index */ | |
329 | u32 value; /* Used for Local/Arg/Index/ddb_handle */ | |
1da177e4 LT |
330 | }; |
331 | ||
1044f1f6 BM |
332 | /* Values for Reference.Class above */ |
333 | ||
334 | typedef enum { | |
335 | ACPI_REFCLASS_LOCAL = 0, /* Method local */ | |
336 | ACPI_REFCLASS_ARG = 1, /* Method argument */ | |
337 | ACPI_REFCLASS_REFOF = 2, /* Result of ref_of() TBD: Split to Ref/Node and Ref/operand_obj? */ | |
338 | ACPI_REFCLASS_INDEX = 3, /* Result of Index() */ | |
339 | ACPI_REFCLASS_TABLE = 4, /* ddb_handle - Load(), load_table() */ | |
340 | ACPI_REFCLASS_NAME = 5, /* Reference to a named object */ | |
341 | ACPI_REFCLASS_DEBUG = 6, /* Debug object */ | |
342 | ||
343 | ACPI_REFCLASS_MAX = 6 | |
344 | } ACPI_REFERENCE_CLASSES; | |
345 | ||
1da177e4 LT |
346 | /* |
347 | * Extra object is used as additional storage for types that | |
348 | * have AML code in their declarations (term_args) that must be | |
349 | * evaluated at run time. | |
350 | * | |
351 | * Currently: Region and field_unit types | |
352 | */ | |
4be44fcd | 353 | struct acpi_object_extra { |
61686124 | 354 | ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *method_REG; /* _REG method for this region (if any) */ |
4be44fcd | 355 | void *region_context; /* Region-specific data */ |
61686124 BM |
356 | u8 *aml_start; |
357 | u32 aml_length; | |
1da177e4 LT |
358 | }; |
359 | ||
1da177e4 LT |
360 | /* Additional data that can be attached to namespace nodes */ |
361 | ||
4be44fcd LB |
362 | struct acpi_object_data { |
363 | ACPI_OBJECT_COMMON_HEADER acpi_object_handler handler; | |
364 | void *pointer; | |
1da177e4 LT |
365 | }; |
366 | ||
1da177e4 LT |
367 | /* Structure used when objects are cached for reuse */ |
368 | ||
4be44fcd LB |
369 | struct acpi_object_cache_list { |
370 | ACPI_OBJECT_COMMON_HEADER union acpi_operand_object *next; /* Link for object cache and internal lists */ | |
1da177e4 LT |
371 | }; |
372 | ||
1da177e4 LT |
373 | /****************************************************************************** |
374 | * | |
375 | * union acpi_operand_object Descriptor - a giant union of all of the above | |
376 | * | |
377 | *****************************************************************************/ | |
378 | ||
4be44fcd LB |
379 | union acpi_operand_object { |
380 | struct acpi_object_common common; | |
381 | struct acpi_object_integer integer; | |
382 | struct acpi_object_string string; | |
383 | struct acpi_object_buffer buffer; | |
384 | struct acpi_object_package package; | |
385 | struct acpi_object_event event; | |
386 | struct acpi_object_method method; | |
387 | struct acpi_object_mutex mutex; | |
388 | struct acpi_object_region region; | |
389 | struct acpi_object_notify_common common_notify; | |
390 | struct acpi_object_device device; | |
391 | struct acpi_object_power_resource power_resource; | |
392 | struct acpi_object_processor processor; | |
393 | struct acpi_object_thermal_zone thermal_zone; | |
394 | struct acpi_object_field_common common_field; | |
395 | struct acpi_object_region_field field; | |
396 | struct acpi_object_buffer_field buffer_field; | |
397 | struct acpi_object_bank_field bank_field; | |
398 | struct acpi_object_index_field index_field; | |
399 | struct acpi_object_notify_handler notify; | |
400 | struct acpi_object_addr_handler address_space; | |
401 | struct acpi_object_reference reference; | |
402 | struct acpi_object_extra extra; | |
403 | struct acpi_object_data data; | |
404 | struct acpi_object_cache_list cache; | |
8d5c54b6 BM |
405 | |
406 | /* | |
407 | * Add namespace node to union in order to simplify code that accepts both | |
408 | * ACPI_OPERAND_OBJECTs and ACPI_NAMESPACE_NODEs. The structures share | |
409 | * a common descriptor_type field in order to differentiate them. | |
410 | */ | |
411 | struct acpi_namespace_node node; | |
1da177e4 LT |
412 | }; |
413 | ||
1da177e4 LT |
414 | /****************************************************************************** |
415 | * | |
416 | * union acpi_descriptor - objects that share a common descriptor identifier | |
417 | * | |
418 | *****************************************************************************/ | |
419 | ||
1da177e4 LT |
420 | /* Object descriptor types */ |
421 | ||
4be44fcd | 422 | #define ACPI_DESC_TYPE_CACHED 0x01 /* Used only when object is cached */ |
1da177e4 LT |
423 | #define ACPI_DESC_TYPE_STATE 0x02 |
424 | #define ACPI_DESC_TYPE_STATE_UPDATE 0x03 | |
425 | #define ACPI_DESC_TYPE_STATE_PACKAGE 0x04 | |
426 | #define ACPI_DESC_TYPE_STATE_CONTROL 0x05 | |
427 | #define ACPI_DESC_TYPE_STATE_RPSCOPE 0x06 | |
428 | #define ACPI_DESC_TYPE_STATE_PSCOPE 0x07 | |
429 | #define ACPI_DESC_TYPE_STATE_WSCOPE 0x08 | |
430 | #define ACPI_DESC_TYPE_STATE_RESULT 0x09 | |
431 | #define ACPI_DESC_TYPE_STATE_NOTIFY 0x0A | |
432 | #define ACPI_DESC_TYPE_STATE_THREAD 0x0B | |
433 | #define ACPI_DESC_TYPE_WALK 0x0C | |
434 | #define ACPI_DESC_TYPE_PARSER 0x0D | |
435 | #define ACPI_DESC_TYPE_OPERAND 0x0E | |
436 | #define ACPI_DESC_TYPE_NAMED 0x0F | |
437 | #define ACPI_DESC_TYPE_MAX 0x0F | |
438 | ||
61686124 BM |
439 | struct acpi_common_descriptor { |
440 | void *common_pointer; | |
441 | u8 descriptor_type; /* To differentiate various internal objs */ | |
442 | }; | |
443 | ||
4be44fcd | 444 | union acpi_descriptor { |
61686124 | 445 | struct acpi_common_descriptor common; |
4be44fcd LB |
446 | union acpi_operand_object object; |
447 | struct acpi_namespace_node node; | |
448 | union acpi_parse_object op; | |
1da177e4 LT |
449 | }; |
450 | ||
7c9626ba BM |
451 | #pragma pack() |
452 | ||
4be44fcd | 453 | #endif /* _ACOBJECT_H */ |