Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: utobject - ACPI object create/delete/size/cache routines | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
75a44ce0 | 8 | * Copyright (C) 2000 - 2008, Intel Corp. |
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 | 44 | #include <acpi/acpi.h> |
e2f7a777 LB |
45 | #include "accommon.h" |
46 | #include "acnamesp.h" | |
1da177e4 | 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 | ||
4b8ed631 BM |
86 | union acpi_operand_object *acpi_ut_create_internal_object_dbg(const char |
87 | *module_name, | |
4be44fcd LB |
88 | u32 line_number, |
89 | u32 component_id, | |
90 | acpi_object_type | |
91 | type) | |
1da177e4 | 92 | { |
4be44fcd LB |
93 | union acpi_operand_object *object; |
94 | union acpi_operand_object *second_object; | |
1da177e4 | 95 | |
b229cf92 | 96 | ACPI_FUNCTION_TRACE_STR(ut_create_internal_object_dbg, |
4be44fcd | 97 | acpi_ut_get_type_name(type)); |
1da177e4 LT |
98 | |
99 | /* Allocate the raw object descriptor */ | |
100 | ||
4be44fcd LB |
101 | object = |
102 | acpi_ut_allocate_object_desc_dbg(module_name, line_number, | |
103 | component_id); | |
1da177e4 | 104 | if (!object) { |
4be44fcd | 105 | return_PTR(NULL); |
1da177e4 LT |
106 | } |
107 | ||
108 | switch (type) { | |
109 | case ACPI_TYPE_REGION: | |
110 | case ACPI_TYPE_BUFFER_FIELD: | |
ef805d95 | 111 | case ACPI_TYPE_LOCAL_BANK_FIELD: |
1da177e4 LT |
112 | |
113 | /* These types require a secondary object */ | |
114 | ||
4be44fcd LB |
115 | second_object = acpi_ut_allocate_object_desc_dbg(module_name, |
116 | line_number, | |
117 | component_id); | |
1da177e4 | 118 | if (!second_object) { |
4be44fcd LB |
119 | acpi_ut_delete_object_desc(object); |
120 | return_PTR(NULL); | |
1da177e4 LT |
121 | } |
122 | ||
123 | second_object->common.type = ACPI_TYPE_LOCAL_EXTRA; | |
124 | second_object->common.reference_count = 1; | |
125 | ||
126 | /* Link the second object to the first */ | |
127 | ||
128 | object->common.next_object = second_object; | |
129 | break; | |
130 | ||
131 | default: | |
132 | /* All others have no secondary object */ | |
133 | break; | |
134 | } | |
135 | ||
136 | /* Save the object type in the object descriptor */ | |
137 | ||
138 | object->common.type = (u8) type; | |
139 | ||
140 | /* Init the reference count */ | |
141 | ||
142 | object->common.reference_count = 1; | |
143 | ||
144 | /* Any per-type initialization should go here */ | |
145 | ||
4be44fcd | 146 | return_PTR(object); |
1da177e4 LT |
147 | } |
148 | ||
6287ee32 BM |
149 | /******************************************************************************* |
150 | * | |
151 | * FUNCTION: acpi_ut_create_package_object | |
152 | * | |
153 | * PARAMETERS: Count - Number of package elements | |
154 | * | |
155 | * RETURN: Pointer to a new Package object, null on failure | |
156 | * | |
157 | * DESCRIPTION: Create a fully initialized package object | |
158 | * | |
159 | ******************************************************************************/ | |
160 | ||
161 | union acpi_operand_object *acpi_ut_create_package_object(u32 count) | |
162 | { | |
163 | union acpi_operand_object *package_desc; | |
164 | union acpi_operand_object **package_elements; | |
165 | ||
166 | ACPI_FUNCTION_TRACE_U32(ut_create_package_object, count); | |
167 | ||
168 | /* Create a new Package object */ | |
169 | ||
170 | package_desc = acpi_ut_create_internal_object(ACPI_TYPE_PACKAGE); | |
171 | if (!package_desc) { | |
172 | return_PTR(NULL); | |
173 | } | |
174 | ||
175 | /* | |
176 | * Create the element array. Count+1 allows the array to be null | |
177 | * terminated. | |
178 | */ | |
67a119f9 BM |
179 | package_elements = ACPI_ALLOCATE_ZEROED(((acpi_size) count + |
180 | 1) * sizeof(void *)); | |
6287ee32 | 181 | if (!package_elements) { |
83dd4504 | 182 | acpi_ut_remove_reference(package_desc); |
6287ee32 BM |
183 | return_PTR(NULL); |
184 | } | |
185 | ||
186 | package_desc->package.count = count; | |
187 | package_desc->package.elements = package_elements; | |
188 | return_PTR(package_desc); | |
189 | } | |
190 | ||
502f7efa BM |
191 | /******************************************************************************* |
192 | * | |
193 | * FUNCTION: acpi_ut_create_integer_object | |
194 | * | |
195 | * PARAMETERS: initial_value - Initial value for the integer | |
196 | * | |
197 | * RETURN: Pointer to a new Integer object, null on failure | |
198 | * | |
199 | * DESCRIPTION: Create an initialized integer object | |
200 | * | |
201 | ******************************************************************************/ | |
202 | ||
203 | union acpi_operand_object *acpi_ut_create_integer_object(u64 initial_value) | |
204 | { | |
205 | union acpi_operand_object *integer_desc; | |
206 | ||
207 | ACPI_FUNCTION_TRACE(ut_create_integer_object); | |
208 | ||
209 | /* Create and initialize a new integer object */ | |
210 | ||
211 | integer_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); | |
212 | if (!integer_desc) { | |
213 | return_PTR(NULL); | |
214 | } | |
215 | ||
216 | integer_desc->integer.value = initial_value; | |
217 | return_PTR(integer_desc); | |
218 | } | |
219 | ||
1da177e4 LT |
220 | /******************************************************************************* |
221 | * | |
222 | * FUNCTION: acpi_ut_create_buffer_object | |
223 | * | |
224 | * PARAMETERS: buffer_size - Size of buffer to be created | |
225 | * | |
44f6c012 | 226 | * RETURN: Pointer to a new Buffer object, null on failure |
1da177e4 LT |
227 | * |
228 | * DESCRIPTION: Create a fully initialized buffer object | |
229 | * | |
230 | ******************************************************************************/ | |
231 | ||
4be44fcd | 232 | union acpi_operand_object *acpi_ut_create_buffer_object(acpi_size buffer_size) |
1da177e4 | 233 | { |
4be44fcd LB |
234 | union acpi_operand_object *buffer_desc; |
235 | u8 *buffer = NULL; | |
1da177e4 | 236 | |
b229cf92 | 237 | ACPI_FUNCTION_TRACE_U32(ut_create_buffer_object, buffer_size); |
1da177e4 LT |
238 | |
239 | /* Create a new Buffer object */ | |
240 | ||
4be44fcd | 241 | buffer_desc = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER); |
1da177e4 | 242 | if (!buffer_desc) { |
4be44fcd | 243 | return_PTR(NULL); |
1da177e4 LT |
244 | } |
245 | ||
246 | /* Create an actual buffer only if size > 0 */ | |
247 | ||
248 | if (buffer_size > 0) { | |
52fc0b02 | 249 | |
1da177e4 LT |
250 | /* Allocate the actual buffer */ |
251 | ||
8313524a | 252 | buffer = ACPI_ALLOCATE_ZEROED(buffer_size); |
1da177e4 | 253 | if (!buffer) { |
b8e4d893 BM |
254 | ACPI_ERROR((AE_INFO, "Could not allocate size %X", |
255 | (u32) buffer_size)); | |
4be44fcd LB |
256 | acpi_ut_remove_reference(buffer_desc); |
257 | return_PTR(NULL); | |
1da177e4 LT |
258 | } |
259 | } | |
260 | ||
261 | /* Complete buffer object initialization */ | |
262 | ||
263 | buffer_desc->buffer.flags |= AOPOBJ_DATA_VALID; | |
264 | buffer_desc->buffer.pointer = buffer; | |
265 | buffer_desc->buffer.length = (u32) buffer_size; | |
266 | ||
267 | /* Return the new buffer descriptor */ | |
268 | ||
4be44fcd | 269 | return_PTR(buffer_desc); |
1da177e4 LT |
270 | } |
271 | ||
1da177e4 LT |
272 | /******************************************************************************* |
273 | * | |
274 | * FUNCTION: acpi_ut_create_string_object | |
275 | * | |
44f6c012 RM |
276 | * PARAMETERS: string_size - Size of string to be created. Does not |
277 | * include NULL terminator, this is added | |
278 | * automatically. | |
1da177e4 LT |
279 | * |
280 | * RETURN: Pointer to a new String object | |
281 | * | |
282 | * DESCRIPTION: Create a fully initialized string object | |
283 | * | |
284 | ******************************************************************************/ | |
285 | ||
4be44fcd | 286 | union acpi_operand_object *acpi_ut_create_string_object(acpi_size string_size) |
1da177e4 | 287 | { |
4be44fcd LB |
288 | union acpi_operand_object *string_desc; |
289 | char *string; | |
1da177e4 | 290 | |
b229cf92 | 291 | ACPI_FUNCTION_TRACE_U32(ut_create_string_object, string_size); |
1da177e4 LT |
292 | |
293 | /* Create a new String object */ | |
294 | ||
4be44fcd | 295 | string_desc = acpi_ut_create_internal_object(ACPI_TYPE_STRING); |
1da177e4 | 296 | if (!string_desc) { |
4be44fcd | 297 | return_PTR(NULL); |
1da177e4 LT |
298 | } |
299 | ||
300 | /* | |
301 | * Allocate the actual string buffer -- (Size + 1) for NULL terminator. | |
302 | * NOTE: Zero-length strings are NULL terminated | |
303 | */ | |
8313524a | 304 | string = ACPI_ALLOCATE_ZEROED(string_size + 1); |
1da177e4 | 305 | if (!string) { |
b8e4d893 BM |
306 | ACPI_ERROR((AE_INFO, "Could not allocate size %X", |
307 | (u32) string_size)); | |
4be44fcd LB |
308 | acpi_ut_remove_reference(string_desc); |
309 | return_PTR(NULL); | |
1da177e4 LT |
310 | } |
311 | ||
312 | /* Complete string object initialization */ | |
313 | ||
314 | string_desc->string.pointer = string; | |
315 | string_desc->string.length = (u32) string_size; | |
316 | ||
317 | /* Return the new string descriptor */ | |
318 | ||
4be44fcd | 319 | return_PTR(string_desc); |
1da177e4 LT |
320 | } |
321 | ||
1da177e4 LT |
322 | /******************************************************************************* |
323 | * | |
324 | * FUNCTION: acpi_ut_valid_internal_object | |
325 | * | |
326 | * PARAMETERS: Object - Object to be validated | |
327 | * | |
44f6c012 RM |
328 | * RETURN: TRUE if object is valid, FALSE otherwise |
329 | * | |
0211a9c8 | 330 | * DESCRIPTION: Validate a pointer to be a union acpi_operand_object |
1da177e4 LT |
331 | * |
332 | ******************************************************************************/ | |
333 | ||
4be44fcd | 334 | u8 acpi_ut_valid_internal_object(void *object) |
1da177e4 LT |
335 | { |
336 | ||
b229cf92 | 337 | ACPI_FUNCTION_NAME(ut_valid_internal_object); |
1da177e4 LT |
338 | |
339 | /* Check for a null pointer */ | |
340 | ||
341 | if (!object) { | |
7bcc06e8 | 342 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "**** Null Object Ptr\n")); |
1da177e4 LT |
343 | return (FALSE); |
344 | } | |
345 | ||
346 | /* Check the descriptor type field */ | |
347 | ||
4be44fcd | 348 | switch (ACPI_GET_DESCRIPTOR_TYPE(object)) { |
1da177e4 LT |
349 | case ACPI_DESC_TYPE_OPERAND: |
350 | ||
351 | /* The object appears to be a valid union acpi_operand_object */ | |
352 | ||
353 | return (TRUE); | |
354 | ||
355 | default: | |
7bcc06e8 | 356 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
4be44fcd LB |
357 | "%p is not not an ACPI operand obj [%s]\n", |
358 | object, acpi_ut_get_descriptor_name(object))); | |
1da177e4 LT |
359 | break; |
360 | } | |
361 | ||
362 | return (FALSE); | |
363 | } | |
364 | ||
1da177e4 LT |
365 | /******************************************************************************* |
366 | * | |
367 | * FUNCTION: acpi_ut_allocate_object_desc_dbg | |
368 | * | |
369 | * PARAMETERS: module_name - Caller's module name (for error output) | |
370 | * line_number - Caller's line number (for error output) | |
371 | * component_id - Caller's component ID (for error output) | |
372 | * | |
373 | * RETURN: Pointer to newly allocated object descriptor. Null on error | |
374 | * | |
375 | * DESCRIPTION: Allocate a new object descriptor. Gracefully handle | |
376 | * error conditions. | |
377 | * | |
378 | ******************************************************************************/ | |
379 | ||
4b8ed631 | 380 | void *acpi_ut_allocate_object_desc_dbg(const char *module_name, |
4be44fcd | 381 | u32 line_number, u32 component_id) |
1da177e4 | 382 | { |
4be44fcd | 383 | union acpi_operand_object *object; |
1da177e4 | 384 | |
b229cf92 | 385 | ACPI_FUNCTION_TRACE(ut_allocate_object_desc_dbg); |
1da177e4 | 386 | |
4be44fcd | 387 | object = acpi_os_acquire_object(acpi_gbl_operand_cache); |
1da177e4 | 388 | if (!object) { |
b8e4d893 BM |
389 | ACPI_ERROR((module_name, line_number, |
390 | "Could not allocate an object descriptor")); | |
1da177e4 | 391 | |
4be44fcd | 392 | return_PTR(NULL); |
1da177e4 LT |
393 | } |
394 | ||
395 | /* Mark the descriptor type */ | |
8313524a | 396 | |
73459f73 | 397 | memset(object, 0, sizeof(union acpi_operand_object)); |
4be44fcd | 398 | ACPI_SET_DESCRIPTOR_TYPE(object, ACPI_DESC_TYPE_OPERAND); |
1da177e4 | 399 | |
4be44fcd LB |
400 | ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "%p Size %X\n", |
401 | object, (u32) sizeof(union acpi_operand_object))); | |
1da177e4 | 402 | |
4be44fcd | 403 | return_PTR(object); |
1da177e4 LT |
404 | } |
405 | ||
1da177e4 LT |
406 | /******************************************************************************* |
407 | * | |
408 | * FUNCTION: acpi_ut_delete_object_desc | |
409 | * | |
410 | * PARAMETERS: Object - An Acpi internal object to be deleted | |
411 | * | |
412 | * RETURN: None. | |
413 | * | |
414 | * DESCRIPTION: Free an ACPI object descriptor or add it to the object cache | |
415 | * | |
416 | ******************************************************************************/ | |
417 | ||
4be44fcd | 418 | void acpi_ut_delete_object_desc(union acpi_operand_object *object) |
1da177e4 | 419 | { |
b229cf92 | 420 | ACPI_FUNCTION_TRACE_PTR(ut_delete_object_desc, object); |
1da177e4 | 421 | |
0211a9c8 | 422 | /* Object must be a union acpi_operand_object */ |
1da177e4 | 423 | |
4be44fcd | 424 | if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) { |
b8e4d893 BM |
425 | ACPI_ERROR((AE_INFO, |
426 | "%p is not an ACPI Operand object [%s]", object, | |
427 | acpi_ut_get_descriptor_name(object))); | |
1da177e4 LT |
428 | return_VOID; |
429 | } | |
430 | ||
4be44fcd | 431 | (void)acpi_os_release_object(acpi_gbl_operand_cache, object); |
1da177e4 LT |
432 | return_VOID; |
433 | } | |
1da177e4 | 434 | |
1da177e4 LT |
435 | /******************************************************************************* |
436 | * | |
437 | * FUNCTION: acpi_ut_get_simple_object_size | |
438 | * | |
44f6c012 RM |
439 | * PARAMETERS: internal_object - An ACPI operand object |
440 | * obj_length - Where the length is returned | |
1da177e4 LT |
441 | * |
442 | * RETURN: Status | |
443 | * | |
444 | * DESCRIPTION: This function is called to determine the space required to | |
445 | * contain a simple object for return to an external user. | |
446 | * | |
447 | * The length includes the object structure plus any additional | |
448 | * needed space. | |
449 | * | |
450 | ******************************************************************************/ | |
451 | ||
44f6c012 | 452 | static acpi_status |
4be44fcd LB |
453 | acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object, |
454 | acpi_size * obj_length) | |
1da177e4 | 455 | { |
4be44fcd | 456 | acpi_size length; |
3c7db22a | 457 | acpi_size size; |
4be44fcd | 458 | acpi_status status = AE_OK; |
1da177e4 | 459 | |
b229cf92 | 460 | ACPI_FUNCTION_TRACE_PTR(ut_get_simple_object_size, internal_object); |
1da177e4 | 461 | |
44f6c012 RM |
462 | /* |
463 | * Handle a null object (Could be a uninitialized package | |
464 | * element -- which is legal) | |
465 | */ | |
1da177e4 | 466 | if (!internal_object) { |
c8d16e27 | 467 | *obj_length = sizeof(union acpi_object); |
4be44fcd | 468 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
469 | } |
470 | ||
471 | /* Start with the length of the Acpi object */ | |
472 | ||
4be44fcd | 473 | length = sizeof(union acpi_object); |
1da177e4 | 474 | |
4be44fcd | 475 | if (ACPI_GET_DESCRIPTOR_TYPE(internal_object) == ACPI_DESC_TYPE_NAMED) { |
52fc0b02 | 476 | |
1da177e4 LT |
477 | /* Object is a named object (reference), just return the length */ |
478 | ||
4be44fcd LB |
479 | *obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length); |
480 | return_ACPI_STATUS(status); | |
1da177e4 LT |
481 | } |
482 | ||
483 | /* | |
484 | * The final length depends on the object type | |
485 | * Strings and Buffers are packed right up against the parent object and | |
486 | * must be accessed bytewise or there may be alignment problems on | |
487 | * certain processors | |
488 | */ | |
3371c19c | 489 | switch (internal_object->common.type) { |
1da177e4 LT |
490 | case ACPI_TYPE_STRING: |
491 | ||
492 | length += (acpi_size) internal_object->string.length + 1; | |
493 | break; | |
494 | ||
1da177e4 LT |
495 | case ACPI_TYPE_BUFFER: |
496 | ||
497 | length += (acpi_size) internal_object->buffer.length; | |
498 | break; | |
499 | ||
1da177e4 LT |
500 | case ACPI_TYPE_INTEGER: |
501 | case ACPI_TYPE_PROCESSOR: | |
502 | case ACPI_TYPE_POWER: | |
503 | ||
7a5bb996 LM |
504 | /* No extra data for these types */ |
505 | ||
1da177e4 LT |
506 | break; |
507 | ||
1da177e4 LT |
508 | case ACPI_TYPE_LOCAL_REFERENCE: |
509 | ||
1044f1f6 BM |
510 | switch (internal_object->reference.class) { |
511 | case ACPI_REFCLASS_NAME: | |
1da177e4 LT |
512 | |
513 | /* | |
514 | * Get the actual length of the full pathname to this object. | |
515 | * The reference will be converted to the pathname to the object | |
516 | */ | |
3c7db22a BM |
517 | size = |
518 | acpi_ns_get_pathname_length(internal_object-> | |
519 | reference.node); | |
520 | if (!size) { | |
521 | return_ACPI_STATUS(AE_BAD_PARAMETER); | |
522 | } | |
523 | ||
524 | length += ACPI_ROUND_UP_TO_NATIVE_WORD(size); | |
1da177e4 LT |
525 | break; |
526 | ||
527 | default: | |
528 | ||
529 | /* | |
530 | * No other reference opcodes are supported. | |
531 | * Notably, Locals and Args are not supported, but this may be | |
532 | * required eventually. | |
533 | */ | |
b8e4d893 | 534 | ACPI_ERROR((AE_INFO, |
c2de3a49 | 535 | "Cannot convert to external object - " |
1044f1f6 | 536 | "unsupported Reference Class [%s] %X in object %p", |
c2de3a49 | 537 | acpi_ut_get_reference_name(internal_object), |
1044f1f6 | 538 | internal_object->reference.class, |
b8e4d893 | 539 | internal_object)); |
1da177e4 LT |
540 | status = AE_TYPE; |
541 | break; | |
542 | } | |
543 | break; | |
544 | ||
1da177e4 LT |
545 | default: |
546 | ||
c2de3a49 BM |
547 | ACPI_ERROR((AE_INFO, "Cannot convert to external object - " |
548 | "unsupported type [%s] %X in object %p", | |
549 | acpi_ut_get_object_type_name(internal_object), | |
3371c19c | 550 | internal_object->common.type, internal_object)); |
1da177e4 LT |
551 | status = AE_TYPE; |
552 | break; | |
553 | } | |
554 | ||
555 | /* | |
556 | * Account for the space required by the object rounded up to the next | |
557 | * multiple of the machine word size. This keeps each object aligned | |
558 | * on a machine word boundary. (preventing alignment faults on some | |
559 | * machines.) | |
560 | */ | |
4be44fcd LB |
561 | *obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD(length); |
562 | return_ACPI_STATUS(status); | |
1da177e4 LT |
563 | } |
564 | ||
1da177e4 LT |
565 | /******************************************************************************* |
566 | * | |
567 | * FUNCTION: acpi_ut_get_element_length | |
568 | * | |
569 | * PARAMETERS: acpi_pkg_callback | |
570 | * | |
571 | * RETURN: Status | |
572 | * | |
573 | * DESCRIPTION: Get the length of one package element. | |
574 | * | |
575 | ******************************************************************************/ | |
576 | ||
44f6c012 | 577 | static acpi_status |
4be44fcd LB |
578 | acpi_ut_get_element_length(u8 object_type, |
579 | union acpi_operand_object *source_object, | |
580 | union acpi_generic_state *state, void *context) | |
1da177e4 | 581 | { |
4be44fcd LB |
582 | acpi_status status = AE_OK; |
583 | struct acpi_pkg_info *info = (struct acpi_pkg_info *)context; | |
584 | acpi_size object_space; | |
1da177e4 LT |
585 | |
586 | switch (object_type) { | |
587 | case ACPI_COPY_TYPE_SIMPLE: | |
588 | ||
589 | /* | |
590 | * Simple object - just get the size (Null object/entry is handled | |
591 | * here also) and sum it into the running package length | |
592 | */ | |
4be44fcd LB |
593 | status = |
594 | acpi_ut_get_simple_object_size(source_object, | |
595 | &object_space); | |
596 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
597 | return (status); |
598 | } | |
599 | ||
600 | info->length += object_space; | |
601 | break; | |
602 | ||
1da177e4 LT |
603 | case ACPI_COPY_TYPE_PACKAGE: |
604 | ||
605 | /* Package object - nothing much to do here, let the walk handle it */ | |
606 | ||
607 | info->num_packages++; | |
608 | state->pkg.this_target_obj = NULL; | |
609 | break; | |
610 | ||
1da177e4 LT |
611 | default: |
612 | ||
613 | /* No other types allowed */ | |
614 | ||
615 | return (AE_BAD_PARAMETER); | |
616 | } | |
617 | ||
618 | return (status); | |
619 | } | |
620 | ||
1da177e4 LT |
621 | /******************************************************************************* |
622 | * | |
623 | * FUNCTION: acpi_ut_get_package_object_size | |
624 | * | |
44f6c012 RM |
625 | * PARAMETERS: internal_object - An ACPI internal object |
626 | * obj_length - Where the length is returned | |
1da177e4 LT |
627 | * |
628 | * RETURN: Status | |
629 | * | |
630 | * DESCRIPTION: This function is called to determine the space required to | |
631 | * contain a package object for return to an external user. | |
632 | * | |
633 | * This is moderately complex since a package contains other | |
634 | * objects including packages. | |
635 | * | |
636 | ******************************************************************************/ | |
637 | ||
44f6c012 | 638 | static acpi_status |
4be44fcd LB |
639 | acpi_ut_get_package_object_size(union acpi_operand_object *internal_object, |
640 | acpi_size * obj_length) | |
1da177e4 | 641 | { |
4be44fcd LB |
642 | acpi_status status; |
643 | struct acpi_pkg_info info; | |
1da177e4 | 644 | |
b229cf92 | 645 | ACPI_FUNCTION_TRACE_PTR(ut_get_package_object_size, internal_object); |
1da177e4 | 646 | |
4be44fcd | 647 | info.length = 0; |
1da177e4 LT |
648 | info.object_space = 0; |
649 | info.num_packages = 1; | |
650 | ||
4be44fcd LB |
651 | status = acpi_ut_walk_package_tree(internal_object, NULL, |
652 | acpi_ut_get_element_length, &info); | |
653 | if (ACPI_FAILURE(status)) { | |
654 | return_ACPI_STATUS(status); | |
1da177e4 LT |
655 | } |
656 | ||
657 | /* | |
658 | * We have handled all of the objects in all levels of the package. | |
659 | * just add the length of the package objects themselves. | |
660 | * Round up to the next machine word. | |
661 | */ | |
4be44fcd LB |
662 | info.length += ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)) * |
663 | (acpi_size) info.num_packages; | |
1da177e4 LT |
664 | |
665 | /* Return the total package length */ | |
666 | ||
667 | *obj_length = info.length; | |
4be44fcd | 668 | return_ACPI_STATUS(status); |
1da177e4 LT |
669 | } |
670 | ||
1da177e4 LT |
671 | /******************************************************************************* |
672 | * | |
673 | * FUNCTION: acpi_ut_get_object_size | |
674 | * | |
44f6c012 RM |
675 | * PARAMETERS: internal_object - An ACPI internal object |
676 | * obj_length - Where the length will be returned | |
1da177e4 LT |
677 | * |
678 | * RETURN: Status | |
679 | * | |
680 | * DESCRIPTION: This function is called to determine the space required to | |
681 | * contain an object for return to an API user. | |
682 | * | |
683 | ******************************************************************************/ | |
684 | ||
685 | acpi_status | |
4be44fcd LB |
686 | acpi_ut_get_object_size(union acpi_operand_object *internal_object, |
687 | acpi_size * obj_length) | |
1da177e4 | 688 | { |
4be44fcd LB |
689 | acpi_status status; |
690 | ||
691 | ACPI_FUNCTION_ENTRY(); | |
692 | ||
693 | if ((ACPI_GET_DESCRIPTOR_TYPE(internal_object) == | |
694 | ACPI_DESC_TYPE_OPERAND) | |
3371c19c | 695 | && (internal_object->common.type == ACPI_TYPE_PACKAGE)) { |
4be44fcd LB |
696 | status = |
697 | acpi_ut_get_package_object_size(internal_object, | |
698 | obj_length); | |
699 | } else { | |
700 | status = | |
701 | acpi_ut_get_simple_object_size(internal_object, obj_length); | |
1da177e4 LT |
702 | } |
703 | ||
704 | return (status); | |
705 | } |