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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: utobject - ACPI object create/delete/size/cache routines | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
8 | * Copyright (C) 2000 - 2005, 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 | ||
45 | #include <acpi/acpi.h> | |
46 | #include <acpi/acnamesp.h> | |
47 | #include <acpi/amlcode.h> | |
48 | ||
49 | ||
50 | #define _COMPONENT ACPI_UTILITIES | |
51 | ACPI_MODULE_NAME ("utobject") | |
52 | ||
44f6c012 RM |
53 | /* Local prototypes */ |
54 | ||
55 | static acpi_status | |
56 | acpi_ut_get_simple_object_size ( | |
57 | union acpi_operand_object *obj, | |
58 | acpi_size *obj_length); | |
59 | ||
60 | static acpi_status | |
61 | acpi_ut_get_package_object_size ( | |
62 | union acpi_operand_object *obj, | |
63 | acpi_size *obj_length); | |
64 | ||
65 | static acpi_status | |
66 | acpi_ut_get_element_length ( | |
67 | u8 object_type, | |
68 | union acpi_operand_object *source_object, | |
69 | union acpi_generic_state *state, | |
70 | void *context); | |
71 | ||
1da177e4 LT |
72 | |
73 | /******************************************************************************* | |
74 | * | |
75 | * FUNCTION: acpi_ut_create_internal_object_dbg | |
76 | * | |
77 | * PARAMETERS: module_name - Source file name of caller | |
78 | * line_number - Line number of caller | |
79 | * component_id - Component type of caller | |
80 | * Type - ACPI Type of the new object | |
81 | * | |
44f6c012 | 82 | * RETURN: A new internal object, null on failure |
1da177e4 LT |
83 | * |
84 | * DESCRIPTION: Create and initialize a new internal object. | |
85 | * | |
86 | * NOTE: We always allocate the worst-case object descriptor because | |
87 | * these objects are cached, and we want them to be | |
88 | * one-size-satisifies-any-request. This in itself may not be | |
89 | * the most memory efficient, but the efficiency of the object | |
90 | * cache should more than make up for this! | |
91 | * | |
92 | ******************************************************************************/ | |
93 | ||
94 | union acpi_operand_object * | |
95 | acpi_ut_create_internal_object_dbg ( | |
96 | char *module_name, | |
97 | u32 line_number, | |
98 | u32 component_id, | |
99 | acpi_object_type type) | |
100 | { | |
101 | union acpi_operand_object *object; | |
102 | union acpi_operand_object *second_object; | |
103 | ||
104 | ||
44f6c012 RM |
105 | ACPI_FUNCTION_TRACE_STR ("ut_create_internal_object_dbg", |
106 | acpi_ut_get_type_name (type)); | |
1da177e4 LT |
107 | |
108 | ||
109 | /* Allocate the raw object descriptor */ | |
110 | ||
111 | object = acpi_ut_allocate_object_desc_dbg (module_name, line_number, component_id); | |
112 | if (!object) { | |
113 | return_PTR (NULL); | |
114 | } | |
115 | ||
116 | switch (type) { | |
117 | case ACPI_TYPE_REGION: | |
118 | case ACPI_TYPE_BUFFER_FIELD: | |
119 | ||
120 | /* These types require a secondary object */ | |
121 | ||
44f6c012 RM |
122 | second_object = acpi_ut_allocate_object_desc_dbg (module_name, |
123 | line_number, component_id); | |
1da177e4 LT |
124 | if (!second_object) { |
125 | acpi_ut_delete_object_desc (object); | |
126 | return_PTR (NULL); | |
127 | } | |
128 | ||
129 | second_object->common.type = ACPI_TYPE_LOCAL_EXTRA; | |
130 | second_object->common.reference_count = 1; | |
131 | ||
132 | /* Link the second object to the first */ | |
133 | ||
134 | object->common.next_object = second_object; | |
135 | break; | |
136 | ||
137 | default: | |
138 | /* All others have no secondary object */ | |
139 | break; | |
140 | } | |
141 | ||
142 | /* Save the object type in the object descriptor */ | |
143 | ||
144 | object->common.type = (u8) type; | |
145 | ||
146 | /* Init the reference count */ | |
147 | ||
148 | object->common.reference_count = 1; | |
149 | ||
150 | /* Any per-type initialization should go here */ | |
151 | ||
152 | return_PTR (object); | |
153 | } | |
154 | ||
155 | ||
156 | /******************************************************************************* | |
157 | * | |
158 | * FUNCTION: acpi_ut_create_buffer_object | |
159 | * | |
160 | * PARAMETERS: buffer_size - Size of buffer to be created | |
161 | * | |
44f6c012 | 162 | * RETURN: Pointer to a new Buffer object, null on failure |
1da177e4 LT |
163 | * |
164 | * DESCRIPTION: Create a fully initialized buffer object | |
165 | * | |
166 | ******************************************************************************/ | |
167 | ||
168 | union acpi_operand_object * | |
169 | acpi_ut_create_buffer_object ( | |
170 | acpi_size buffer_size) | |
171 | { | |
172 | union acpi_operand_object *buffer_desc; | |
173 | u8 *buffer = NULL; | |
174 | ||
175 | ||
176 | ACPI_FUNCTION_TRACE_U32 ("ut_create_buffer_object", buffer_size); | |
177 | ||
178 | ||
179 | /* Create a new Buffer object */ | |
180 | ||
181 | buffer_desc = acpi_ut_create_internal_object (ACPI_TYPE_BUFFER); | |
182 | if (!buffer_desc) { | |
183 | return_PTR (NULL); | |
184 | } | |
185 | ||
186 | /* Create an actual buffer only if size > 0 */ | |
187 | ||
188 | if (buffer_size > 0) { | |
189 | /* Allocate the actual buffer */ | |
190 | ||
191 | buffer = ACPI_MEM_CALLOCATE (buffer_size); | |
192 | if (!buffer) { | |
193 | ACPI_REPORT_ERROR (("create_buffer: could not allocate size %X\n", | |
194 | (u32) buffer_size)); | |
195 | acpi_ut_remove_reference (buffer_desc); | |
196 | return_PTR (NULL); | |
197 | } | |
198 | } | |
199 | ||
200 | /* Complete buffer object initialization */ | |
201 | ||
202 | buffer_desc->buffer.flags |= AOPOBJ_DATA_VALID; | |
203 | buffer_desc->buffer.pointer = buffer; | |
204 | buffer_desc->buffer.length = (u32) buffer_size; | |
205 | ||
206 | /* Return the new buffer descriptor */ | |
207 | ||
208 | return_PTR (buffer_desc); | |
209 | } | |
210 | ||
211 | ||
212 | /******************************************************************************* | |
213 | * | |
214 | * FUNCTION: acpi_ut_create_string_object | |
215 | * | |
44f6c012 RM |
216 | * PARAMETERS: string_size - Size of string to be created. Does not |
217 | * include NULL terminator, this is added | |
218 | * automatically. | |
1da177e4 LT |
219 | * |
220 | * RETURN: Pointer to a new String object | |
221 | * | |
222 | * DESCRIPTION: Create a fully initialized string object | |
223 | * | |
224 | ******************************************************************************/ | |
225 | ||
226 | union acpi_operand_object * | |
227 | acpi_ut_create_string_object ( | |
228 | acpi_size string_size) | |
229 | { | |
230 | union acpi_operand_object *string_desc; | |
231 | char *string; | |
232 | ||
233 | ||
234 | ACPI_FUNCTION_TRACE_U32 ("ut_create_string_object", string_size); | |
235 | ||
236 | ||
237 | /* Create a new String object */ | |
238 | ||
239 | string_desc = acpi_ut_create_internal_object (ACPI_TYPE_STRING); | |
240 | if (!string_desc) { | |
241 | return_PTR (NULL); | |
242 | } | |
243 | ||
244 | /* | |
245 | * Allocate the actual string buffer -- (Size + 1) for NULL terminator. | |
246 | * NOTE: Zero-length strings are NULL terminated | |
247 | */ | |
248 | string = ACPI_MEM_CALLOCATE (string_size + 1); | |
249 | if (!string) { | |
250 | ACPI_REPORT_ERROR (("create_string: could not allocate size %X\n", | |
251 | (u32) string_size)); | |
252 | acpi_ut_remove_reference (string_desc); | |
253 | return_PTR (NULL); | |
254 | } | |
255 | ||
256 | /* Complete string object initialization */ | |
257 | ||
258 | string_desc->string.pointer = string; | |
259 | string_desc->string.length = (u32) string_size; | |
260 | ||
261 | /* Return the new string descriptor */ | |
262 | ||
263 | return_PTR (string_desc); | |
264 | } | |
265 | ||
266 | ||
267 | /******************************************************************************* | |
268 | * | |
269 | * FUNCTION: acpi_ut_valid_internal_object | |
270 | * | |
271 | * PARAMETERS: Object - Object to be validated | |
272 | * | |
44f6c012 RM |
273 | * RETURN: TRUE if object is valid, FALSE otherwise |
274 | * | |
275 | * DESCRIPTION: Validate a pointer to be an union acpi_operand_object | |
1da177e4 LT |
276 | * |
277 | ******************************************************************************/ | |
278 | ||
279 | u8 | |
280 | acpi_ut_valid_internal_object ( | |
281 | void *object) | |
282 | { | |
283 | ||
284 | ACPI_FUNCTION_NAME ("ut_valid_internal_object"); | |
285 | ||
286 | ||
287 | /* Check for a null pointer */ | |
288 | ||
289 | if (!object) { | |
290 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "**** Null Object Ptr\n")); | |
291 | return (FALSE); | |
292 | } | |
293 | ||
294 | /* Check the descriptor type field */ | |
295 | ||
296 | switch (ACPI_GET_DESCRIPTOR_TYPE (object)) { | |
297 | case ACPI_DESC_TYPE_OPERAND: | |
298 | ||
299 | /* The object appears to be a valid union acpi_operand_object */ | |
300 | ||
301 | return (TRUE); | |
302 | ||
303 | default: | |
304 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, | |
305 | "%p is not not an ACPI operand obj [%s]\n", | |
306 | object, acpi_ut_get_descriptor_name (object))); | |
307 | break; | |
308 | } | |
309 | ||
310 | return (FALSE); | |
311 | } | |
312 | ||
313 | ||
314 | /******************************************************************************* | |
315 | * | |
316 | * FUNCTION: acpi_ut_allocate_object_desc_dbg | |
317 | * | |
318 | * PARAMETERS: module_name - Caller's module name (for error output) | |
319 | * line_number - Caller's line number (for error output) | |
320 | * component_id - Caller's component ID (for error output) | |
321 | * | |
322 | * RETURN: Pointer to newly allocated object descriptor. Null on error | |
323 | * | |
324 | * DESCRIPTION: Allocate a new object descriptor. Gracefully handle | |
325 | * error conditions. | |
326 | * | |
327 | ******************************************************************************/ | |
328 | ||
329 | void * | |
330 | acpi_ut_allocate_object_desc_dbg ( | |
331 | char *module_name, | |
332 | u32 line_number, | |
333 | u32 component_id) | |
334 | { | |
335 | union acpi_operand_object *object; | |
336 | ||
337 | ||
338 | ACPI_FUNCTION_TRACE ("ut_allocate_object_desc_dbg"); | |
339 | ||
340 | ||
73459f73 | 341 | object = acpi_os_acquire_object (acpi_gbl_operand_cache); |
1da177e4 LT |
342 | if (!object) { |
343 | _ACPI_REPORT_ERROR (module_name, line_number, component_id, | |
344 | ("Could not allocate an object descriptor\n")); | |
345 | ||
346 | return_PTR (NULL); | |
347 | } | |
348 | ||
349 | /* Mark the descriptor type */ | |
73459f73 | 350 | memset(object, 0, sizeof(union acpi_operand_object)); |
1da177e4 LT |
351 | ACPI_SET_DESCRIPTOR_TYPE (object, ACPI_DESC_TYPE_OPERAND); |
352 | ||
353 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p Size %X\n", | |
354 | object, (u32) sizeof (union acpi_operand_object))); | |
355 | ||
356 | return_PTR (object); | |
357 | } | |
358 | ||
359 | ||
360 | /******************************************************************************* | |
361 | * | |
362 | * FUNCTION: acpi_ut_delete_object_desc | |
363 | * | |
364 | * PARAMETERS: Object - An Acpi internal object to be deleted | |
365 | * | |
366 | * RETURN: None. | |
367 | * | |
368 | * DESCRIPTION: Free an ACPI object descriptor or add it to the object cache | |
369 | * | |
370 | ******************************************************************************/ | |
371 | ||
372 | void | |
373 | acpi_ut_delete_object_desc ( | |
374 | union acpi_operand_object *object) | |
375 | { | |
376 | ACPI_FUNCTION_TRACE_PTR ("ut_delete_object_desc", object); | |
377 | ||
378 | ||
379 | /* Object must be an union acpi_operand_object */ | |
380 | ||
381 | if (ACPI_GET_DESCRIPTOR_TYPE (object) != ACPI_DESC_TYPE_OPERAND) { | |
382 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
383 | "%p is not an ACPI Operand object [%s]\n", object, | |
384 | acpi_ut_get_descriptor_name (object))); | |
385 | return_VOID; | |
386 | } | |
387 | ||
73459f73 | 388 | (void) acpi_os_release_object (acpi_gbl_operand_cache, object); |
1da177e4 LT |
389 | return_VOID; |
390 | } | |
1da177e4 LT |
391 | |
392 | ||
393 | /******************************************************************************* | |
394 | * | |
395 | * FUNCTION: acpi_ut_get_simple_object_size | |
396 | * | |
44f6c012 RM |
397 | * PARAMETERS: internal_object - An ACPI operand object |
398 | * obj_length - Where the length is returned | |
1da177e4 LT |
399 | * |
400 | * RETURN: Status | |
401 | * | |
402 | * DESCRIPTION: This function is called to determine the space required to | |
403 | * contain a simple object for return to an external user. | |
404 | * | |
405 | * The length includes the object structure plus any additional | |
406 | * needed space. | |
407 | * | |
408 | ******************************************************************************/ | |
409 | ||
44f6c012 | 410 | static acpi_status |
1da177e4 LT |
411 | acpi_ut_get_simple_object_size ( |
412 | union acpi_operand_object *internal_object, | |
413 | acpi_size *obj_length) | |
414 | { | |
415 | acpi_size length; | |
416 | acpi_status status = AE_OK; | |
417 | ||
418 | ||
419 | ACPI_FUNCTION_TRACE_PTR ("ut_get_simple_object_size", internal_object); | |
420 | ||
421 | ||
44f6c012 RM |
422 | /* |
423 | * Handle a null object (Could be a uninitialized package | |
424 | * element -- which is legal) | |
425 | */ | |
1da177e4 LT |
426 | if (!internal_object) { |
427 | *obj_length = 0; | |
428 | return_ACPI_STATUS (AE_OK); | |
429 | } | |
430 | ||
431 | /* Start with the length of the Acpi object */ | |
432 | ||
433 | length = sizeof (union acpi_object); | |
434 | ||
435 | if (ACPI_GET_DESCRIPTOR_TYPE (internal_object) == ACPI_DESC_TYPE_NAMED) { | |
436 | /* Object is a named object (reference), just return the length */ | |
437 | ||
438 | *obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD (length); | |
439 | return_ACPI_STATUS (status); | |
440 | } | |
441 | ||
442 | /* | |
443 | * The final length depends on the object type | |
444 | * Strings and Buffers are packed right up against the parent object and | |
445 | * must be accessed bytewise or there may be alignment problems on | |
446 | * certain processors | |
447 | */ | |
448 | switch (ACPI_GET_OBJECT_TYPE (internal_object)) { | |
449 | case ACPI_TYPE_STRING: | |
450 | ||
451 | length += (acpi_size) internal_object->string.length + 1; | |
452 | break; | |
453 | ||
454 | ||
455 | case ACPI_TYPE_BUFFER: | |
456 | ||
457 | length += (acpi_size) internal_object->buffer.length; | |
458 | break; | |
459 | ||
460 | ||
461 | case ACPI_TYPE_INTEGER: | |
462 | case ACPI_TYPE_PROCESSOR: | |
463 | case ACPI_TYPE_POWER: | |
464 | ||
465 | /* | |
466 | * No extra data for these types | |
467 | */ | |
468 | break; | |
469 | ||
470 | ||
471 | case ACPI_TYPE_LOCAL_REFERENCE: | |
472 | ||
473 | switch (internal_object->reference.opcode) { | |
474 | case AML_INT_NAMEPATH_OP: | |
475 | ||
476 | /* | |
477 | * Get the actual length of the full pathname to this object. | |
478 | * The reference will be converted to the pathname to the object | |
479 | */ | |
44f6c012 RM |
480 | length += ACPI_ROUND_UP_TO_NATIVE_WORD ( |
481 | acpi_ns_get_pathname_length (internal_object->reference.node)); | |
1da177e4 LT |
482 | break; |
483 | ||
484 | default: | |
485 | ||
486 | /* | |
487 | * No other reference opcodes are supported. | |
488 | * Notably, Locals and Args are not supported, but this may be | |
489 | * required eventually. | |
490 | */ | |
491 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
492 | "Unsupported Reference opcode=%X in object %p\n", | |
493 | internal_object->reference.opcode, internal_object)); | |
494 | status = AE_TYPE; | |
495 | break; | |
496 | } | |
497 | break; | |
498 | ||
499 | ||
500 | default: | |
501 | ||
502 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unsupported type=%X in object %p\n", | |
503 | ACPI_GET_OBJECT_TYPE (internal_object), internal_object)); | |
504 | status = AE_TYPE; | |
505 | break; | |
506 | } | |
507 | ||
508 | /* | |
509 | * Account for the space required by the object rounded up to the next | |
510 | * multiple of the machine word size. This keeps each object aligned | |
511 | * on a machine word boundary. (preventing alignment faults on some | |
512 | * machines.) | |
513 | */ | |
514 | *obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD (length); | |
515 | return_ACPI_STATUS (status); | |
516 | } | |
517 | ||
518 | ||
519 | /******************************************************************************* | |
520 | * | |
521 | * FUNCTION: acpi_ut_get_element_length | |
522 | * | |
523 | * PARAMETERS: acpi_pkg_callback | |
524 | * | |
525 | * RETURN: Status | |
526 | * | |
527 | * DESCRIPTION: Get the length of one package element. | |
528 | * | |
529 | ******************************************************************************/ | |
530 | ||
44f6c012 | 531 | static acpi_status |
1da177e4 LT |
532 | acpi_ut_get_element_length ( |
533 | u8 object_type, | |
534 | union acpi_operand_object *source_object, | |
535 | union acpi_generic_state *state, | |
536 | void *context) | |
537 | { | |
538 | acpi_status status = AE_OK; | |
539 | struct acpi_pkg_info *info = (struct acpi_pkg_info *) context; | |
540 | acpi_size object_space; | |
541 | ||
542 | ||
543 | switch (object_type) { | |
544 | case ACPI_COPY_TYPE_SIMPLE: | |
545 | ||
546 | /* | |
547 | * Simple object - just get the size (Null object/entry is handled | |
548 | * here also) and sum it into the running package length | |
549 | */ | |
550 | status = acpi_ut_get_simple_object_size (source_object, &object_space); | |
551 | if (ACPI_FAILURE (status)) { | |
552 | return (status); | |
553 | } | |
554 | ||
555 | info->length += object_space; | |
556 | break; | |
557 | ||
558 | ||
559 | case ACPI_COPY_TYPE_PACKAGE: | |
560 | ||
561 | /* Package object - nothing much to do here, let the walk handle it */ | |
562 | ||
563 | info->num_packages++; | |
564 | state->pkg.this_target_obj = NULL; | |
565 | break; | |
566 | ||
567 | ||
568 | default: | |
569 | ||
570 | /* No other types allowed */ | |
571 | ||
572 | return (AE_BAD_PARAMETER); | |
573 | } | |
574 | ||
575 | return (status); | |
576 | } | |
577 | ||
578 | ||
579 | /******************************************************************************* | |
580 | * | |
581 | * FUNCTION: acpi_ut_get_package_object_size | |
582 | * | |
44f6c012 RM |
583 | * PARAMETERS: internal_object - An ACPI internal object |
584 | * obj_length - Where the length is returned | |
1da177e4 LT |
585 | * |
586 | * RETURN: Status | |
587 | * | |
588 | * DESCRIPTION: This function is called to determine the space required to | |
589 | * contain a package object for return to an external user. | |
590 | * | |
591 | * This is moderately complex since a package contains other | |
592 | * objects including packages. | |
593 | * | |
594 | ******************************************************************************/ | |
595 | ||
44f6c012 | 596 | static acpi_status |
1da177e4 LT |
597 | acpi_ut_get_package_object_size ( |
598 | union acpi_operand_object *internal_object, | |
599 | acpi_size *obj_length) | |
600 | { | |
601 | acpi_status status; | |
602 | struct acpi_pkg_info info; | |
603 | ||
604 | ||
605 | ACPI_FUNCTION_TRACE_PTR ("ut_get_package_object_size", internal_object); | |
606 | ||
607 | ||
608 | info.length = 0; | |
609 | info.object_space = 0; | |
610 | info.num_packages = 1; | |
611 | ||
612 | status = acpi_ut_walk_package_tree (internal_object, NULL, | |
613 | acpi_ut_get_element_length, &info); | |
614 | if (ACPI_FAILURE (status)) { | |
615 | return_ACPI_STATUS (status); | |
616 | } | |
617 | ||
618 | /* | |
619 | * We have handled all of the objects in all levels of the package. | |
620 | * just add the length of the package objects themselves. | |
621 | * Round up to the next machine word. | |
622 | */ | |
623 | info.length += ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object)) * | |
624 | (acpi_size) info.num_packages; | |
625 | ||
626 | /* Return the total package length */ | |
627 | ||
628 | *obj_length = info.length; | |
629 | return_ACPI_STATUS (status); | |
630 | } | |
631 | ||
632 | ||
633 | /******************************************************************************* | |
634 | * | |
635 | * FUNCTION: acpi_ut_get_object_size | |
636 | * | |
44f6c012 RM |
637 | * PARAMETERS: internal_object - An ACPI internal object |
638 | * obj_length - Where the length will be returned | |
1da177e4 LT |
639 | * |
640 | * RETURN: Status | |
641 | * | |
642 | * DESCRIPTION: This function is called to determine the space required to | |
643 | * contain an object for return to an API user. | |
644 | * | |
645 | ******************************************************************************/ | |
646 | ||
647 | acpi_status | |
44f6c012 | 648 | acpi_ut_get_object_size ( |
1da177e4 LT |
649 | union acpi_operand_object *internal_object, |
650 | acpi_size *obj_length) | |
651 | { | |
652 | acpi_status status; | |
653 | ||
654 | ||
655 | ACPI_FUNCTION_ENTRY (); | |
656 | ||
657 | ||
658 | if ((ACPI_GET_DESCRIPTOR_TYPE (internal_object) == ACPI_DESC_TYPE_OPERAND) && | |
659 | (ACPI_GET_OBJECT_TYPE (internal_object) == ACPI_TYPE_PACKAGE)) { | |
660 | status = acpi_ut_get_package_object_size (internal_object, obj_length); | |
661 | } | |
662 | else { | |
663 | status = acpi_ut_get_simple_object_size (internal_object, obj_length); | |
664 | } | |
665 | ||
666 | return (status); | |
667 | } | |
668 | ||
669 |