Commit | Line | Data |
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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: utobject - ACPI object create/delete/size/cache routines | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
4a90c7e8 | 8 | * Copyright (C) 2000 - 2006, R. Byron Moore |
1da177e4 LT |
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 | ||
1da177e4 LT |
44 | #include <acpi/acpi.h> |
45 | #include <acpi/acnamesp.h> | |
46 | #include <acpi/amlcode.h> | |
47 | ||
1da177e4 | 48 | #define _COMPONENT ACPI_UTILITIES |
4be44fcd | 49 | ACPI_MODULE_NAME("utobject") |
1da177e4 | 50 | |
44f6c012 | 51 | /* Local prototypes */ |
44f6c012 | 52 | static acpi_status |
4be44fcd LB |
53 | acpi_ut_get_simple_object_size(union acpi_operand_object *obj, |
54 | acpi_size * obj_length); | |
44f6c012 RM |
55 | |
56 | static acpi_status | |
4be44fcd LB |
57 | acpi_ut_get_package_object_size(union acpi_operand_object *obj, |
58 | acpi_size * obj_length); | |
44f6c012 RM |
59 | |
60 | static acpi_status | |
4be44fcd LB |
61 | acpi_ut_get_element_length(u8 object_type, |
62 | union acpi_operand_object *source_object, | |
63 | union acpi_generic_state *state, void *context); | |
1da177e4 LT |
64 | |
65 | /******************************************************************************* | |
66 | * | |
67 | * FUNCTION: acpi_ut_create_internal_object_dbg | |
68 | * | |
69 | * PARAMETERS: module_name - Source file name of caller | |
70 | * line_number - Line number of caller | |
71 | * component_id - Component type of caller | |
72 | * Type - ACPI Type of the new object | |
73 | * | |
44f6c012 | 74 | * RETURN: A new internal object, null on failure |
1da177e4 LT |
75 | * |
76 | * DESCRIPTION: Create and initialize a new internal object. | |
77 | * | |
78 | * NOTE: We always allocate the worst-case object descriptor because | |
79 | * these objects are cached, and we want them to be | |
80 | * one-size-satisifies-any-request. This in itself may not be | |
81 | * the most memory efficient, but the efficiency of the object | |
82 | * cache should more than make up for this! | |
83 | * | |
84 | ******************************************************************************/ | |
85 | ||
4be44fcd LB |
86 | union acpi_operand_object *acpi_ut_create_internal_object_dbg(char *module_name, |
87 | u32 line_number, | |
88 | u32 component_id, | |
89 | acpi_object_type | |
90 | type) | |
1da177e4 | 91 | { |
4be44fcd LB |
92 | union acpi_operand_object *object; |
93 | union acpi_operand_object *second_object; | |
1da177e4 | 94 | |
b229cf92 | 95 | ACPI_FUNCTION_TRACE_STR(ut_create_internal_object_dbg, |
4be44fcd | 96 | acpi_ut_get_type_name(type)); |
1da177e4 LT |
97 | |
98 | /* Allocate the raw object descriptor */ | |
99 | ||
4be44fcd LB |
100 | object = |
101 | acpi_ut_allocate_object_desc_dbg(module_name, line_number, | |
102 | component_id); | |
1da177e4 | 103 | if (!object) { |
4be44fcd | 104 | return_PTR(NULL); |
1da177e4 LT |
105 | } |
106 | ||
107 | switch (type) { | |
108 | case ACPI_TYPE_REGION: | |
109 | case ACPI_TYPE_BUFFER_FIELD: | |
110 | ||
111 | /* These types require a secondary object */ | |
112 | ||
4be44fcd LB |
113 | second_object = acpi_ut_allocate_object_desc_dbg(module_name, |
114 | line_number, | |
115 | component_id); | |
1da177e4 | 116 | if (!second_object) { |
4be44fcd LB |
117 | acpi_ut_delete_object_desc(object); |
118 | return_PTR(NULL); | |
1da177e4 LT |
119 | } |
120 | ||
121 | second_object->common.type = ACPI_TYPE_LOCAL_EXTRA; | |
122 | second_object->common.reference_count = 1; | |
123 | ||
124 | /* Link the second object to the first */ | |
125 | ||
126 | object->common.next_object = second_object; | |
127 | break; | |
128 | ||
129 | default: | |
130 | /* All others have no secondary object */ | |
131 | break; | |
132 | } | |
133 | ||
134 | /* Save the object type in the object descriptor */ | |
135 | ||
136 | object->common.type = (u8) type; | |
137 | ||
138 | /* Init the reference count */ | |
139 | ||
140 | object->common.reference_count = 1; | |
141 | ||
142 | /* Any per-type initialization should go here */ | |
143 | ||
4be44fcd | 144 | return_PTR(object); |
1da177e4 LT |
145 | } |
146 | ||
1da177e4 LT |
147 | /******************************************************************************* |
148 | * | |
149 | * FUNCTION: acpi_ut_create_buffer_object | |
150 | * | |
151 | * PARAMETERS: buffer_size - Size of buffer to be created | |
152 | * | |
44f6c012 | 153 | * RETURN: Pointer to a new Buffer object, null on failure |
1da177e4 LT |
154 | * |
155 | * DESCRIPTION: Create a fully initialized buffer object | |
156 | * | |
157 | ******************************************************************************/ | |
158 | ||
4be44fcd | 159 | union acpi_operand_object *acpi_ut_create_buffer_object(acpi_size buffer_size) |
1da177e4 | 160 | { |
4be44fcd LB |
161 | union acpi_operand_object *buffer_desc; |
162 | u8 *buffer = NULL; | |
1da177e4 | 163 | |
b229cf92 | 164 | ACPI_FUNCTION_TRACE_U32(ut_create_buffer_object, buffer_size); |
1da177e4 LT |
165 | |
166 | /* Create a new Buffer object */ | |
167 | ||
4be44fcd | 168 | buffer_desc = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER); |
1da177e4 | 169 | if (!buffer_desc) { |
4be44fcd | 170 | return_PTR(NULL); |
1da177e4 LT |
171 | } |
172 | ||
173 | /* Create an actual buffer only if size > 0 */ | |
174 | ||
175 | if (buffer_size > 0) { | |
52fc0b02 | 176 | |
1da177e4 LT |
177 | /* Allocate the actual buffer */ |
178 | ||
8313524a | 179 | buffer = ACPI_ALLOCATE_ZEROED(buffer_size); |
1da177e4 | 180 | if (!buffer) { |
b8e4d893 BM |
181 | ACPI_ERROR((AE_INFO, "Could not allocate size %X", |
182 | (u32) buffer_size)); | |
4be44fcd LB |
183 | acpi_ut_remove_reference(buffer_desc); |
184 | return_PTR(NULL); | |
1da177e4 LT |
185 | } |
186 | } | |
187 | ||
188 | /* Complete buffer object initialization */ | |
189 | ||
190 | buffer_desc->buffer.flags |= AOPOBJ_DATA_VALID; | |
191 | buffer_desc->buffer.pointer = buffer; | |
192 | buffer_desc->buffer.length = (u32) buffer_size; | |
193 | ||
194 | /* Return the new buffer descriptor */ | |
195 | ||
4be44fcd | 196 | return_PTR(buffer_desc); |
1da177e4 LT |
197 | } |
198 | ||
1da177e4 LT |
199 | /******************************************************************************* |
200 | * | |
201 | * FUNCTION: acpi_ut_create_string_object | |
202 | * | |
44f6c012 RM |
203 | * PARAMETERS: string_size - Size of string to be created. Does not |
204 | * include NULL terminator, this is added | |
205 | * automatically. | |
1da177e4 LT |
206 | * |
207 | * RETURN: Pointer to a new String object | |
208 | * | |
209 | * DESCRIPTION: Create a fully initialized string object | |
210 | * | |
211 | ******************************************************************************/ | |
212 | ||
4be44fcd | 213 | union acpi_operand_object *acpi_ut_create_string_object(acpi_size string_size) |
1da177e4 | 214 | { |
4be44fcd LB |
215 | union acpi_operand_object *string_desc; |
216 | char *string; | |
1da177e4 | 217 | |
b229cf92 | 218 | ACPI_FUNCTION_TRACE_U32(ut_create_string_object, string_size); |
1da177e4 LT |
219 | |
220 | /* Create a new String object */ | |
221 | ||
4be44fcd | 222 | string_desc = acpi_ut_create_internal_object(ACPI_TYPE_STRING); |
1da177e4 | 223 | if (!string_desc) { |
4be44fcd | 224 | return_PTR(NULL); |
1da177e4 LT |
225 | } |
226 | ||
227 | /* | |
228 | * Allocate the actual string buffer -- (Size + 1) for NULL terminator. | |
229 | * NOTE: Zero-length strings are NULL terminated | |
230 | */ | |
8313524a | 231 | string = ACPI_ALLOCATE_ZEROED(string_size + 1); |
1da177e4 | 232 | if (!string) { |
b8e4d893 BM |
233 | ACPI_ERROR((AE_INFO, "Could not allocate size %X", |
234 | (u32) string_size)); | |
4be44fcd LB |
235 | acpi_ut_remove_reference(string_desc); |
236 | return_PTR(NULL); | |
1da177e4 LT |
237 | } |
238 | ||
239 | /* Complete string object initialization */ | |
240 | ||
241 | string_desc->string.pointer = string; | |
242 | string_desc->string.length = (u32) string_size; | |
243 | ||
244 | /* Return the new string descriptor */ | |
245 | ||
4be44fcd | 246 | return_PTR(string_desc); |
1da177e4 LT |
247 | } |
248 | ||
1da177e4 LT |
249 | /******************************************************************************* |
250 | * | |
251 | * FUNCTION: acpi_ut_valid_internal_object | |
252 | * | |
253 | * PARAMETERS: Object - Object to be validated | |
254 | * | |
44f6c012 RM |
255 | * RETURN: TRUE if object is valid, FALSE otherwise |
256 | * | |
257 | * DESCRIPTION: Validate a pointer to be an union acpi_operand_object | |
1da177e4 LT |
258 | * |
259 | ******************************************************************************/ | |
260 | ||
4be44fcd | 261 | u8 acpi_ut_valid_internal_object(void *object) |
1da177e4 LT |
262 | { |
263 | ||
b229cf92 | 264 | ACPI_FUNCTION_NAME(ut_valid_internal_object); |
1da177e4 LT |
265 | |
266 | /* Check for a null pointer */ | |
267 | ||
268 | if (!object) { | |
4be44fcd | 269 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "**** Null Object Ptr\n")); |
1da177e4 LT |
270 | return (FALSE); |
271 | } | |
272 | ||
273 | /* Check the descriptor type field */ | |
274 | ||
4be44fcd | 275 | switch (ACPI_GET_DESCRIPTOR_TYPE(object)) { |
1da177e4 LT |
276 | case ACPI_DESC_TYPE_OPERAND: |
277 | ||
278 | /* The object appears to be a valid union acpi_operand_object */ | |
279 | ||
280 | return (TRUE); | |
281 | ||
282 | default: | |
4be44fcd LB |
283 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
284 | "%p is not not an ACPI operand obj [%s]\n", | |
285 | object, acpi_ut_get_descriptor_name(object))); | |
1da177e4 LT |
286 | break; |
287 | } | |
288 | ||
289 | return (FALSE); | |
290 | } | |
291 | ||
1da177e4 LT |
292 | /******************************************************************************* |
293 | * | |
294 | * FUNCTION: acpi_ut_allocate_object_desc_dbg | |
295 | * | |
296 | * PARAMETERS: module_name - Caller's module name (for error output) | |
297 | * line_number - Caller's line number (for error output) | |
298 | * component_id - Caller's component ID (for error output) | |
299 | * | |
300 | * RETURN: Pointer to newly allocated object descriptor. Null on error | |
301 | * | |
302 | * DESCRIPTION: Allocate a new object descriptor. Gracefully handle | |
303 | * error conditions. | |
304 | * | |
305 | ******************************************************************************/ | |
306 | ||
4be44fcd LB |
307 | void *acpi_ut_allocate_object_desc_dbg(char *module_name, |
308 | u32 line_number, u32 component_id) | |
1da177e4 | 309 | { |
4be44fcd | 310 | union acpi_operand_object *object; |
1da177e4 | 311 | |
b229cf92 | 312 | ACPI_FUNCTION_TRACE(ut_allocate_object_desc_dbg); |
1da177e4 | 313 | |
4be44fcd | 314 | object = acpi_os_acquire_object(acpi_gbl_operand_cache); |
1da177e4 | 315 | if (!object) { |
b8e4d893 BM |
316 | ACPI_ERROR((module_name, line_number, |
317 | "Could not allocate an object descriptor")); | |
1da177e4 | 318 | |
4be44fcd | 319 | return_PTR(NULL); |
1da177e4 LT |
320 | } |
321 | ||
322 | /* Mark the descriptor type */ | |
8313524a | 323 | |
73459f73 | 324 | memset(object, 0, sizeof(union acpi_operand_object)); |
4be44fcd | 325 | ACPI_SET_DESCRIPTOR_TYPE(object, ACPI_DESC_TYPE_OPERAND); |
1da177e4 | 326 | |
4be44fcd LB |
327 | ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "%p Size %X\n", |
328 | object, (u32) sizeof(union acpi_operand_object))); | |
1da177e4 | 329 | |
4be44fcd | 330 | return_PTR(object); |
1da177e4 LT |
331 | } |
332 | ||
1da177e4 LT |
333 | /******************************************************************************* |
334 | * | |
335 | * FUNCTION: acpi_ut_delete_object_desc | |
336 | * | |
337 | * PARAMETERS: Object - An Acpi internal object to be deleted | |
338 | * | |
339 | * RETURN: None. | |
340 | * | |
341 | * DESCRIPTION: Free an ACPI object descriptor or add it to the object cache | |
342 | * | |
343 | ******************************************************************************/ | |
344 | ||
4be44fcd | 345 | void acpi_ut_delete_object_desc(union acpi_operand_object *object) |
1da177e4 | 346 | { |
b229cf92 | 347 | ACPI_FUNCTION_TRACE_PTR(ut_delete_object_desc, object); |
1da177e4 LT |
348 | |
349 | /* Object must be an union acpi_operand_object */ | |
350 | ||
4be44fcd | 351 | if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) { |
b8e4d893 BM |
352 | ACPI_ERROR((AE_INFO, |
353 | "%p is not an ACPI Operand object [%s]", object, | |
354 | acpi_ut_get_descriptor_name(object))); | |
1da177e4 LT |
355 | return_VOID; |
356 | } | |
357 | ||
4be44fcd | 358 | (void)acpi_os_release_object(acpi_gbl_operand_cache, object); |
1da177e4 LT |
359 | return_VOID; |
360 | } | |
1da177e4 | 361 | |
1da177e4 LT |
362 | /******************************************************************************* |
363 | * | |
364 | * FUNCTION: acpi_ut_get_simple_object_size | |
365 | * | |
44f6c012 RM |
366 | * PARAMETERS: internal_object - An ACPI operand object |
367 | * obj_length - Where the length is returned | |
1da177e4 LT |
368 | * |
369 | * RETURN: Status | |
370 | * | |
371 | * DESCRIPTION: This function is called to determine the space required to | |
372 | * contain a simple object for return to an external user. | |
373 | * | |
374 | * The length includes the object structure plus any additional | |
375 | * needed space. | |
376 | * | |
377 | ******************************************************************************/ | |
378 | ||
44f6c012 | 379 | static acpi_status |
4be44fcd LB |
380 | acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object, |
381 | acpi_size * obj_length) | |
1da177e4 | 382 | { |
4be44fcd LB |
383 | acpi_size length; |
384 | acpi_status status = AE_OK; | |
1da177e4 | 385 | |
b229cf92 | 386 | ACPI_FUNCTION_TRACE_PTR(ut_get_simple_object_size, internal_object); |
1da177e4 | 387 | |
44f6c012 RM |
388 | /* |
389 | * Handle a null object (Could be a uninitialized package | |
390 | * element -- which is legal) | |
391 | */ | |
1da177e4 LT |
392 | if (!internal_object) { |
393 | *obj_length = 0; | |
4be44fcd | 394 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
395 | } |
396 | ||
397 | /* Start with the length of the Acpi object */ | |
398 | ||
4be44fcd | 399 | length = sizeof(union acpi_object); |
1da177e4 | 400 | |
4be44fcd | 401 | if (ACPI_GET_DESCRIPTOR_TYPE(internal_object) == ACPI_DESC_TYPE_NAMED) { |
52fc0b02 | 402 | |
1da177e4 LT |
403 | /* Object is a named object (reference), just return the length */ |
404 | ||
4be44fcd LB |
405 | *obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length); |
406 | return_ACPI_STATUS(status); | |
1da177e4 LT |
407 | } |
408 | ||
409 | /* | |
410 | * The final length depends on the object type | |
411 | * Strings and Buffers are packed right up against the parent object and | |
412 | * must be accessed bytewise or there may be alignment problems on | |
413 | * certain processors | |
414 | */ | |
4be44fcd | 415 | switch (ACPI_GET_OBJECT_TYPE(internal_object)) { |
1da177e4 LT |
416 | case ACPI_TYPE_STRING: |
417 | ||
418 | length += (acpi_size) internal_object->string.length + 1; | |
419 | break; | |
420 | ||
1da177e4 LT |
421 | case ACPI_TYPE_BUFFER: |
422 | ||
423 | length += (acpi_size) internal_object->buffer.length; | |
424 | break; | |
425 | ||
1da177e4 LT |
426 | case ACPI_TYPE_INTEGER: |
427 | case ACPI_TYPE_PROCESSOR: | |
428 | case ACPI_TYPE_POWER: | |
429 | ||
430 | /* | |
431 | * No extra data for these types | |
432 | */ | |
433 | break; | |
434 | ||
1da177e4 LT |
435 | case ACPI_TYPE_LOCAL_REFERENCE: |
436 | ||
437 | switch (internal_object->reference.opcode) { | |
438 | case AML_INT_NAMEPATH_OP: | |
439 | ||
440 | /* | |
441 | * Get the actual length of the full pathname to this object. | |
442 | * The reference will be converted to the pathname to the object | |
443 | */ | |
4be44fcd LB |
444 | length += |
445 | ACPI_ROUND_UP_TO_NATIVE_WORD | |
446 | (acpi_ns_get_pathname_length | |
447 | (internal_object->reference.node)); | |
1da177e4 LT |
448 | break; |
449 | ||
450 | default: | |
451 | ||
452 | /* | |
453 | * No other reference opcodes are supported. | |
454 | * Notably, Locals and Args are not supported, but this may be | |
455 | * required eventually. | |
456 | */ | |
b8e4d893 BM |
457 | ACPI_ERROR((AE_INFO, |
458 | "Unsupported Reference opcode=%X in object %p", | |
459 | internal_object->reference.opcode, | |
460 | internal_object)); | |
1da177e4 LT |
461 | status = AE_TYPE; |
462 | break; | |
463 | } | |
464 | break; | |
465 | ||
1da177e4 LT |
466 | default: |
467 | ||
b8e4d893 BM |
468 | ACPI_ERROR((AE_INFO, "Unsupported type=%X in object %p", |
469 | ACPI_GET_OBJECT_TYPE(internal_object), | |
470 | internal_object)); | |
1da177e4 LT |
471 | status = AE_TYPE; |
472 | break; | |
473 | } | |
474 | ||
475 | /* | |
476 | * Account for the space required by the object rounded up to the next | |
477 | * multiple of the machine word size. This keeps each object aligned | |
478 | * on a machine word boundary. (preventing alignment faults on some | |
479 | * machines.) | |
480 | */ | |
4be44fcd LB |
481 | *obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length); |
482 | return_ACPI_STATUS(status); | |
1da177e4 LT |
483 | } |
484 | ||
1da177e4 LT |
485 | /******************************************************************************* |
486 | * | |
487 | * FUNCTION: acpi_ut_get_element_length | |
488 | * | |
489 | * PARAMETERS: acpi_pkg_callback | |
490 | * | |
491 | * RETURN: Status | |
492 | * | |
493 | * DESCRIPTION: Get the length of one package element. | |
494 | * | |
495 | ******************************************************************************/ | |
496 | ||
44f6c012 | 497 | static acpi_status |
4be44fcd LB |
498 | acpi_ut_get_element_length(u8 object_type, |
499 | union acpi_operand_object *source_object, | |
500 | union acpi_generic_state *state, void *context) | |
1da177e4 | 501 | { |
4be44fcd LB |
502 | acpi_status status = AE_OK; |
503 | struct acpi_pkg_info *info = (struct acpi_pkg_info *)context; | |
504 | acpi_size object_space; | |
1da177e4 LT |
505 | |
506 | switch (object_type) { | |
507 | case ACPI_COPY_TYPE_SIMPLE: | |
508 | ||
509 | /* | |
510 | * Simple object - just get the size (Null object/entry is handled | |
511 | * here also) and sum it into the running package length | |
512 | */ | |
4be44fcd LB |
513 | status = |
514 | acpi_ut_get_simple_object_size(source_object, | |
515 | &object_space); | |
516 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
517 | return (status); |
518 | } | |
519 | ||
520 | info->length += object_space; | |
521 | break; | |
522 | ||
1da177e4 LT |
523 | case ACPI_COPY_TYPE_PACKAGE: |
524 | ||
525 | /* Package object - nothing much to do here, let the walk handle it */ | |
526 | ||
527 | info->num_packages++; | |
528 | state->pkg.this_target_obj = NULL; | |
529 | break; | |
530 | ||
1da177e4 LT |
531 | default: |
532 | ||
533 | /* No other types allowed */ | |
534 | ||
535 | return (AE_BAD_PARAMETER); | |
536 | } | |
537 | ||
538 | return (status); | |
539 | } | |
540 | ||
1da177e4 LT |
541 | /******************************************************************************* |
542 | * | |
543 | * FUNCTION: acpi_ut_get_package_object_size | |
544 | * | |
44f6c012 RM |
545 | * PARAMETERS: internal_object - An ACPI internal object |
546 | * obj_length - Where the length is returned | |
1da177e4 LT |
547 | * |
548 | * RETURN: Status | |
549 | * | |
550 | * DESCRIPTION: This function is called to determine the space required to | |
551 | * contain a package object for return to an external user. | |
552 | * | |
553 | * This is moderately complex since a package contains other | |
554 | * objects including packages. | |
555 | * | |
556 | ******************************************************************************/ | |
557 | ||
44f6c012 | 558 | static acpi_status |
4be44fcd LB |
559 | acpi_ut_get_package_object_size(union acpi_operand_object *internal_object, |
560 | acpi_size * obj_length) | |
1da177e4 | 561 | { |
4be44fcd LB |
562 | acpi_status status; |
563 | struct acpi_pkg_info info; | |
1da177e4 | 564 | |
b229cf92 | 565 | ACPI_FUNCTION_TRACE_PTR(ut_get_package_object_size, internal_object); |
1da177e4 | 566 | |
4be44fcd | 567 | info.length = 0; |
1da177e4 LT |
568 | info.object_space = 0; |
569 | info.num_packages = 1; | |
570 | ||
4be44fcd LB |
571 | status = acpi_ut_walk_package_tree(internal_object, NULL, |
572 | acpi_ut_get_element_length, &info); | |
573 | if (ACPI_FAILURE(status)) { | |
574 | return_ACPI_STATUS(status); | |
1da177e4 LT |
575 | } |
576 | ||
577 | /* | |
578 | * We have handled all of the objects in all levels of the package. | |
579 | * just add the length of the package objects themselves. | |
580 | * Round up to the next machine word. | |
581 | */ | |
4be44fcd LB |
582 | info.length += ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)) * |
583 | (acpi_size) info.num_packages; | |
1da177e4 LT |
584 | |
585 | /* Return the total package length */ | |
586 | ||
587 | *obj_length = info.length; | |
4be44fcd | 588 | return_ACPI_STATUS(status); |
1da177e4 LT |
589 | } |
590 | ||
1da177e4 LT |
591 | /******************************************************************************* |
592 | * | |
593 | * FUNCTION: acpi_ut_get_object_size | |
594 | * | |
44f6c012 RM |
595 | * PARAMETERS: internal_object - An ACPI internal object |
596 | * obj_length - Where the length will be returned | |
1da177e4 LT |
597 | * |
598 | * RETURN: Status | |
599 | * | |
600 | * DESCRIPTION: This function is called to determine the space required to | |
601 | * contain an object for return to an API user. | |
602 | * | |
603 | ******************************************************************************/ | |
604 | ||
605 | acpi_status | |
4be44fcd LB |
606 | acpi_ut_get_object_size(union acpi_operand_object *internal_object, |
607 | acpi_size * obj_length) | |
1da177e4 | 608 | { |
4be44fcd LB |
609 | acpi_status status; |
610 | ||
611 | ACPI_FUNCTION_ENTRY(); | |
612 | ||
613 | if ((ACPI_GET_DESCRIPTOR_TYPE(internal_object) == | |
614 | ACPI_DESC_TYPE_OPERAND) | |
615 | && (ACPI_GET_OBJECT_TYPE(internal_object) == ACPI_TYPE_PACKAGE)) { | |
616 | status = | |
617 | acpi_ut_get_package_object_size(internal_object, | |
618 | obj_length); | |
619 | } else { | |
620 | status = | |
621 | acpi_ut_get_simple_object_size(internal_object, obj_length); | |
1da177e4 LT |
622 | } |
623 | ||
624 | return (status); | |
625 | } |