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 | /* | |
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 | ||
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 | |
4be44fcd LB |
95 | ACPI_FUNCTION_TRACE_STR("ut_create_internal_object_dbg", |
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 | |
4be44fcd | 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) { | |
176 | /* Allocate the actual buffer */ | |
177 | ||
4be44fcd | 178 | buffer = ACPI_MEM_CALLOCATE(buffer_size); |
1da177e4 | 179 | if (!buffer) { |
4be44fcd LB |
180 | ACPI_REPORT_ERROR(("create_buffer: could not allocate size %X\n", (u32) buffer_size)); |
181 | acpi_ut_remove_reference(buffer_desc); | |
182 | return_PTR(NULL); | |
1da177e4 LT |
183 | } |
184 | } | |
185 | ||
186 | /* Complete buffer object initialization */ | |
187 | ||
188 | buffer_desc->buffer.flags |= AOPOBJ_DATA_VALID; | |
189 | buffer_desc->buffer.pointer = buffer; | |
190 | buffer_desc->buffer.length = (u32) buffer_size; | |
191 | ||
192 | /* Return the new buffer descriptor */ | |
193 | ||
4be44fcd | 194 | return_PTR(buffer_desc); |
1da177e4 LT |
195 | } |
196 | ||
1da177e4 LT |
197 | /******************************************************************************* |
198 | * | |
199 | * FUNCTION: acpi_ut_create_string_object | |
200 | * | |
44f6c012 RM |
201 | * PARAMETERS: string_size - Size of string to be created. Does not |
202 | * include NULL terminator, this is added | |
203 | * automatically. | |
1da177e4 LT |
204 | * |
205 | * RETURN: Pointer to a new String object | |
206 | * | |
207 | * DESCRIPTION: Create a fully initialized string object | |
208 | * | |
209 | ******************************************************************************/ | |
210 | ||
4be44fcd | 211 | union acpi_operand_object *acpi_ut_create_string_object(acpi_size string_size) |
1da177e4 | 212 | { |
4be44fcd LB |
213 | union acpi_operand_object *string_desc; |
214 | char *string; | |
1da177e4 | 215 | |
4be44fcd | 216 | ACPI_FUNCTION_TRACE_U32("ut_create_string_object", string_size); |
1da177e4 LT |
217 | |
218 | /* Create a new String object */ | |
219 | ||
4be44fcd | 220 | string_desc = acpi_ut_create_internal_object(ACPI_TYPE_STRING); |
1da177e4 | 221 | if (!string_desc) { |
4be44fcd | 222 | return_PTR(NULL); |
1da177e4 LT |
223 | } |
224 | ||
225 | /* | |
226 | * Allocate the actual string buffer -- (Size + 1) for NULL terminator. | |
227 | * NOTE: Zero-length strings are NULL terminated | |
228 | */ | |
4be44fcd | 229 | string = ACPI_MEM_CALLOCATE(string_size + 1); |
1da177e4 | 230 | if (!string) { |
4be44fcd LB |
231 | ACPI_REPORT_ERROR(("create_string: could not allocate size %X\n", (u32) string_size)); |
232 | acpi_ut_remove_reference(string_desc); | |
233 | return_PTR(NULL); | |
1da177e4 LT |
234 | } |
235 | ||
236 | /* Complete string object initialization */ | |
237 | ||
238 | string_desc->string.pointer = string; | |
239 | string_desc->string.length = (u32) string_size; | |
240 | ||
241 | /* Return the new string descriptor */ | |
242 | ||
4be44fcd | 243 | return_PTR(string_desc); |
1da177e4 LT |
244 | } |
245 | ||
1da177e4 LT |
246 | /******************************************************************************* |
247 | * | |
248 | * FUNCTION: acpi_ut_valid_internal_object | |
249 | * | |
250 | * PARAMETERS: Object - Object to be validated | |
251 | * | |
44f6c012 RM |
252 | * RETURN: TRUE if object is valid, FALSE otherwise |
253 | * | |
254 | * DESCRIPTION: Validate a pointer to be an union acpi_operand_object | |
1da177e4 LT |
255 | * |
256 | ******************************************************************************/ | |
257 | ||
4be44fcd | 258 | u8 acpi_ut_valid_internal_object(void *object) |
1da177e4 LT |
259 | { |
260 | ||
4be44fcd | 261 | ACPI_FUNCTION_NAME("ut_valid_internal_object"); |
1da177e4 LT |
262 | |
263 | /* Check for a null pointer */ | |
264 | ||
265 | if (!object) { | |
4be44fcd | 266 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "**** Null Object Ptr\n")); |
1da177e4 LT |
267 | return (FALSE); |
268 | } | |
269 | ||
270 | /* Check the descriptor type field */ | |
271 | ||
4be44fcd | 272 | switch (ACPI_GET_DESCRIPTOR_TYPE(object)) { |
1da177e4 LT |
273 | case ACPI_DESC_TYPE_OPERAND: |
274 | ||
275 | /* The object appears to be a valid union acpi_operand_object */ | |
276 | ||
277 | return (TRUE); | |
278 | ||
279 | default: | |
4be44fcd LB |
280 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
281 | "%p is not not an ACPI operand obj [%s]\n", | |
282 | object, acpi_ut_get_descriptor_name(object))); | |
1da177e4 LT |
283 | break; |
284 | } | |
285 | ||
286 | return (FALSE); | |
287 | } | |
288 | ||
1da177e4 LT |
289 | /******************************************************************************* |
290 | * | |
291 | * FUNCTION: acpi_ut_allocate_object_desc_dbg | |
292 | * | |
293 | * PARAMETERS: module_name - Caller's module name (for error output) | |
294 | * line_number - Caller's line number (for error output) | |
295 | * component_id - Caller's component ID (for error output) | |
296 | * | |
297 | * RETURN: Pointer to newly allocated object descriptor. Null on error | |
298 | * | |
299 | * DESCRIPTION: Allocate a new object descriptor. Gracefully handle | |
300 | * error conditions. | |
301 | * | |
302 | ******************************************************************************/ | |
303 | ||
4be44fcd LB |
304 | void *acpi_ut_allocate_object_desc_dbg(char *module_name, |
305 | u32 line_number, u32 component_id) | |
1da177e4 | 306 | { |
4be44fcd | 307 | union acpi_operand_object *object; |
1da177e4 | 308 | |
4be44fcd | 309 | ACPI_FUNCTION_TRACE("ut_allocate_object_desc_dbg"); |
1da177e4 | 310 | |
4be44fcd | 311 | object = acpi_os_acquire_object(acpi_gbl_operand_cache); |
1da177e4 | 312 | if (!object) { |
4be44fcd LB |
313 | _ACPI_REPORT_ERROR(module_name, line_number, component_id, |
314 | ("Could not allocate an object descriptor\n")); | |
1da177e4 | 315 | |
4be44fcd | 316 | return_PTR(NULL); |
1da177e4 LT |
317 | } |
318 | ||
319 | /* Mark the descriptor type */ | |
73459f73 | 320 | memset(object, 0, sizeof(union acpi_operand_object)); |
4be44fcd | 321 | ACPI_SET_DESCRIPTOR_TYPE(object, ACPI_DESC_TYPE_OPERAND); |
1da177e4 | 322 | |
4be44fcd LB |
323 | ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "%p Size %X\n", |
324 | object, (u32) sizeof(union acpi_operand_object))); | |
1da177e4 | 325 | |
4be44fcd | 326 | return_PTR(object); |
1da177e4 LT |
327 | } |
328 | ||
1da177e4 LT |
329 | /******************************************************************************* |
330 | * | |
331 | * FUNCTION: acpi_ut_delete_object_desc | |
332 | * | |
333 | * PARAMETERS: Object - An Acpi internal object to be deleted | |
334 | * | |
335 | * RETURN: None. | |
336 | * | |
337 | * DESCRIPTION: Free an ACPI object descriptor or add it to the object cache | |
338 | * | |
339 | ******************************************************************************/ | |
340 | ||
4be44fcd | 341 | void acpi_ut_delete_object_desc(union acpi_operand_object *object) |
1da177e4 | 342 | { |
4be44fcd | 343 | ACPI_FUNCTION_TRACE_PTR("ut_delete_object_desc", object); |
1da177e4 LT |
344 | |
345 | /* Object must be an union acpi_operand_object */ | |
346 | ||
4be44fcd LB |
347 | if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) { |
348 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
349 | "%p is not an ACPI Operand object [%s]\n", | |
350 | object, acpi_ut_get_descriptor_name(object))); | |
1da177e4 LT |
351 | return_VOID; |
352 | } | |
353 | ||
4be44fcd | 354 | (void)acpi_os_release_object(acpi_gbl_operand_cache, object); |
1da177e4 LT |
355 | return_VOID; |
356 | } | |
1da177e4 | 357 | |
1da177e4 LT |
358 | /******************************************************************************* |
359 | * | |
360 | * FUNCTION: acpi_ut_get_simple_object_size | |
361 | * | |
44f6c012 RM |
362 | * PARAMETERS: internal_object - An ACPI operand object |
363 | * obj_length - Where the length is returned | |
1da177e4 LT |
364 | * |
365 | * RETURN: Status | |
366 | * | |
367 | * DESCRIPTION: This function is called to determine the space required to | |
368 | * contain a simple object for return to an external user. | |
369 | * | |
370 | * The length includes the object structure plus any additional | |
371 | * needed space. | |
372 | * | |
373 | ******************************************************************************/ | |
374 | ||
44f6c012 | 375 | static acpi_status |
4be44fcd LB |
376 | acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object, |
377 | acpi_size * obj_length) | |
1da177e4 | 378 | { |
4be44fcd LB |
379 | acpi_size length; |
380 | acpi_status status = AE_OK; | |
1da177e4 | 381 | |
4be44fcd | 382 | ACPI_FUNCTION_TRACE_PTR("ut_get_simple_object_size", internal_object); |
1da177e4 | 383 | |
44f6c012 RM |
384 | /* |
385 | * Handle a null object (Could be a uninitialized package | |
386 | * element -- which is legal) | |
387 | */ | |
1da177e4 LT |
388 | if (!internal_object) { |
389 | *obj_length = 0; | |
4be44fcd | 390 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
391 | } |
392 | ||
393 | /* Start with the length of the Acpi object */ | |
394 | ||
4be44fcd | 395 | length = sizeof(union acpi_object); |
1da177e4 | 396 | |
4be44fcd | 397 | if (ACPI_GET_DESCRIPTOR_TYPE(internal_object) == ACPI_DESC_TYPE_NAMED) { |
1da177e4 LT |
398 | /* Object is a named object (reference), just return the length */ |
399 | ||
4be44fcd LB |
400 | *obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length); |
401 | return_ACPI_STATUS(status); | |
1da177e4 LT |
402 | } |
403 | ||
404 | /* | |
405 | * The final length depends on the object type | |
406 | * Strings and Buffers are packed right up against the parent object and | |
407 | * must be accessed bytewise or there may be alignment problems on | |
408 | * certain processors | |
409 | */ | |
4be44fcd | 410 | switch (ACPI_GET_OBJECT_TYPE(internal_object)) { |
1da177e4 LT |
411 | case ACPI_TYPE_STRING: |
412 | ||
413 | length += (acpi_size) internal_object->string.length + 1; | |
414 | break; | |
415 | ||
1da177e4 LT |
416 | case ACPI_TYPE_BUFFER: |
417 | ||
418 | length += (acpi_size) internal_object->buffer.length; | |
419 | break; | |
420 | ||
1da177e4 LT |
421 | case ACPI_TYPE_INTEGER: |
422 | case ACPI_TYPE_PROCESSOR: | |
423 | case ACPI_TYPE_POWER: | |
424 | ||
425 | /* | |
426 | * No extra data for these types | |
427 | */ | |
428 | break; | |
429 | ||
1da177e4 LT |
430 | case ACPI_TYPE_LOCAL_REFERENCE: |
431 | ||
432 | switch (internal_object->reference.opcode) { | |
433 | case AML_INT_NAMEPATH_OP: | |
434 | ||
435 | /* | |
436 | * Get the actual length of the full pathname to this object. | |
437 | * The reference will be converted to the pathname to the object | |
438 | */ | |
4be44fcd LB |
439 | length += |
440 | ACPI_ROUND_UP_TO_NATIVE_WORD | |
441 | (acpi_ns_get_pathname_length | |
442 | (internal_object->reference.node)); | |
1da177e4 LT |
443 | break; |
444 | ||
445 | default: | |
446 | ||
447 | /* | |
448 | * No other reference opcodes are supported. | |
449 | * Notably, Locals and Args are not supported, but this may be | |
450 | * required eventually. | |
451 | */ | |
4be44fcd LB |
452 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
453 | "Unsupported Reference opcode=%X in object %p\n", | |
454 | internal_object->reference.opcode, | |
455 | internal_object)); | |
1da177e4 LT |
456 | status = AE_TYPE; |
457 | break; | |
458 | } | |
459 | break; | |
460 | ||
1da177e4 LT |
461 | default: |
462 | ||
4be44fcd LB |
463 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
464 | "Unsupported type=%X in object %p\n", | |
465 | ACPI_GET_OBJECT_TYPE(internal_object), | |
466 | internal_object)); | |
1da177e4 LT |
467 | status = AE_TYPE; |
468 | break; | |
469 | } | |
470 | ||
471 | /* | |
472 | * Account for the space required by the object rounded up to the next | |
473 | * multiple of the machine word size. This keeps each object aligned | |
474 | * on a machine word boundary. (preventing alignment faults on some | |
475 | * machines.) | |
476 | */ | |
4be44fcd LB |
477 | *obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length); |
478 | return_ACPI_STATUS(status); | |
1da177e4 LT |
479 | } |
480 | ||
1da177e4 LT |
481 | /******************************************************************************* |
482 | * | |
483 | * FUNCTION: acpi_ut_get_element_length | |
484 | * | |
485 | * PARAMETERS: acpi_pkg_callback | |
486 | * | |
487 | * RETURN: Status | |
488 | * | |
489 | * DESCRIPTION: Get the length of one package element. | |
490 | * | |
491 | ******************************************************************************/ | |
492 | ||
44f6c012 | 493 | static acpi_status |
4be44fcd LB |
494 | acpi_ut_get_element_length(u8 object_type, |
495 | union acpi_operand_object *source_object, | |
496 | union acpi_generic_state *state, void *context) | |
1da177e4 | 497 | { |
4be44fcd LB |
498 | acpi_status status = AE_OK; |
499 | struct acpi_pkg_info *info = (struct acpi_pkg_info *)context; | |
500 | acpi_size object_space; | |
1da177e4 LT |
501 | |
502 | switch (object_type) { | |
503 | case ACPI_COPY_TYPE_SIMPLE: | |
504 | ||
505 | /* | |
506 | * Simple object - just get the size (Null object/entry is handled | |
507 | * here also) and sum it into the running package length | |
508 | */ | |
4be44fcd LB |
509 | status = |
510 | acpi_ut_get_simple_object_size(source_object, | |
511 | &object_space); | |
512 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
513 | return (status); |
514 | } | |
515 | ||
516 | info->length += object_space; | |
517 | break; | |
518 | ||
1da177e4 LT |
519 | case ACPI_COPY_TYPE_PACKAGE: |
520 | ||
521 | /* Package object - nothing much to do here, let the walk handle it */ | |
522 | ||
523 | info->num_packages++; | |
524 | state->pkg.this_target_obj = NULL; | |
525 | break; | |
526 | ||
1da177e4 LT |
527 | default: |
528 | ||
529 | /* No other types allowed */ | |
530 | ||
531 | return (AE_BAD_PARAMETER); | |
532 | } | |
533 | ||
534 | return (status); | |
535 | } | |
536 | ||
1da177e4 LT |
537 | /******************************************************************************* |
538 | * | |
539 | * FUNCTION: acpi_ut_get_package_object_size | |
540 | * | |
44f6c012 RM |
541 | * PARAMETERS: internal_object - An ACPI internal object |
542 | * obj_length - Where the length is returned | |
1da177e4 LT |
543 | * |
544 | * RETURN: Status | |
545 | * | |
546 | * DESCRIPTION: This function is called to determine the space required to | |
547 | * contain a package object for return to an external user. | |
548 | * | |
549 | * This is moderately complex since a package contains other | |
550 | * objects including packages. | |
551 | * | |
552 | ******************************************************************************/ | |
553 | ||
44f6c012 | 554 | static acpi_status |
4be44fcd LB |
555 | acpi_ut_get_package_object_size(union acpi_operand_object *internal_object, |
556 | acpi_size * obj_length) | |
1da177e4 | 557 | { |
4be44fcd LB |
558 | acpi_status status; |
559 | struct acpi_pkg_info info; | |
1da177e4 | 560 | |
4be44fcd | 561 | ACPI_FUNCTION_TRACE_PTR("ut_get_package_object_size", internal_object); |
1da177e4 | 562 | |
4be44fcd | 563 | info.length = 0; |
1da177e4 LT |
564 | info.object_space = 0; |
565 | info.num_packages = 1; | |
566 | ||
4be44fcd LB |
567 | status = acpi_ut_walk_package_tree(internal_object, NULL, |
568 | acpi_ut_get_element_length, &info); | |
569 | if (ACPI_FAILURE(status)) { | |
570 | return_ACPI_STATUS(status); | |
1da177e4 LT |
571 | } |
572 | ||
573 | /* | |
574 | * We have handled all of the objects in all levels of the package. | |
575 | * just add the length of the package objects themselves. | |
576 | * Round up to the next machine word. | |
577 | */ | |
4be44fcd LB |
578 | info.length += ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)) * |
579 | (acpi_size) info.num_packages; | |
1da177e4 LT |
580 | |
581 | /* Return the total package length */ | |
582 | ||
583 | *obj_length = info.length; | |
4be44fcd | 584 | return_ACPI_STATUS(status); |
1da177e4 LT |
585 | } |
586 | ||
1da177e4 LT |
587 | /******************************************************************************* |
588 | * | |
589 | * FUNCTION: acpi_ut_get_object_size | |
590 | * | |
44f6c012 RM |
591 | * PARAMETERS: internal_object - An ACPI internal object |
592 | * obj_length - Where the length will be returned | |
1da177e4 LT |
593 | * |
594 | * RETURN: Status | |
595 | * | |
596 | * DESCRIPTION: This function is called to determine the space required to | |
597 | * contain an object for return to an API user. | |
598 | * | |
599 | ******************************************************************************/ | |
600 | ||
601 | acpi_status | |
4be44fcd LB |
602 | acpi_ut_get_object_size(union acpi_operand_object *internal_object, |
603 | acpi_size * obj_length) | |
1da177e4 | 604 | { |
4be44fcd LB |
605 | acpi_status status; |
606 | ||
607 | ACPI_FUNCTION_ENTRY(); | |
608 | ||
609 | if ((ACPI_GET_DESCRIPTOR_TYPE(internal_object) == | |
610 | ACPI_DESC_TYPE_OPERAND) | |
611 | && (ACPI_GET_OBJECT_TYPE(internal_object) == ACPI_TYPE_PACKAGE)) { | |
612 | status = | |
613 | acpi_ut_get_package_object_size(internal_object, | |
614 | obj_length); | |
615 | } else { | |
616 | status = | |
617 | acpi_ut_get_simple_object_size(internal_object, obj_length); | |
1da177e4 LT |
618 | } |
619 | ||
620 | return (status); | |
621 | } |