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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: utcopy - Internal to external object translation utilities | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
6c9deb72 | 8 | * Copyright (C) 2000 - 2007, 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/amlcode.h> | |
46 | ||
1da177e4 | 47 | #define _COMPONENT ACPI_UTILITIES |
4be44fcd | 48 | ACPI_MODULE_NAME("utcopy") |
1da177e4 | 49 | |
44f6c012 | 50 | /* Local prototypes */ |
44f6c012 | 51 | static acpi_status |
4be44fcd LB |
52 | acpi_ut_copy_isimple_to_esimple(union acpi_operand_object *internal_object, |
53 | union acpi_object *external_object, | |
54 | u8 * data_space, acpi_size * buffer_space_used); | |
44f6c012 RM |
55 | |
56 | static acpi_status | |
4be44fcd LB |
57 | acpi_ut_copy_ielement_to_ielement(u8 object_type, |
58 | union acpi_operand_object *source_object, | |
59 | union acpi_generic_state *state, | |
60 | void *context); | |
44f6c012 RM |
61 | |
62 | static acpi_status | |
4be44fcd LB |
63 | acpi_ut_copy_ipackage_to_epackage(union acpi_operand_object *internal_object, |
64 | u8 * buffer, acpi_size * space_used); | |
44f6c012 RM |
65 | |
66 | static acpi_status | |
4be44fcd LB |
67 | acpi_ut_copy_esimple_to_isimple(union acpi_object *user_obj, |
68 | union acpi_operand_object **return_obj); | |
44f6c012 | 69 | |
6287ee32 BM |
70 | static acpi_status |
71 | acpi_ut_copy_epackage_to_ipackage(union acpi_object *external_object, | |
72 | union acpi_operand_object **internal_object); | |
73 | ||
44f6c012 | 74 | static acpi_status |
4be44fcd LB |
75 | acpi_ut_copy_simple_object(union acpi_operand_object *source_desc, |
76 | union acpi_operand_object *dest_desc); | |
44f6c012 RM |
77 | |
78 | static acpi_status | |
4be44fcd LB |
79 | acpi_ut_copy_ielement_to_eelement(u8 object_type, |
80 | union acpi_operand_object *source_object, | |
81 | union acpi_generic_state *state, | |
82 | void *context); | |
44f6c012 RM |
83 | |
84 | static acpi_status | |
4be44fcd LB |
85 | acpi_ut_copy_ipackage_to_ipackage(union acpi_operand_object *source_obj, |
86 | union acpi_operand_object *dest_obj, | |
87 | struct acpi_walk_state *walk_state); | |
1da177e4 LT |
88 | |
89 | /******************************************************************************* | |
90 | * | |
91 | * FUNCTION: acpi_ut_copy_isimple_to_esimple | |
92 | * | |
44f6c012 RM |
93 | * PARAMETERS: internal_object - Source object to be copied |
94 | * external_object - Where to return the copied object | |
95 | * data_space - Where object data is returned (such as | |
96 | * buffer and string data) | |
97 | * buffer_space_used - Length of data_space that was used | |
1da177e4 LT |
98 | * |
99 | * RETURN: Status | |
100 | * | |
44f6c012 RM |
101 | * DESCRIPTION: This function is called to copy a simple internal object to |
102 | * an external object. | |
1da177e4 | 103 | * |
44f6c012 RM |
104 | * The data_space buffer is assumed to have sufficient space for |
105 | * the object. | |
1da177e4 LT |
106 | * |
107 | ******************************************************************************/ | |
108 | ||
109 | static acpi_status | |
4be44fcd LB |
110 | acpi_ut_copy_isimple_to_esimple(union acpi_operand_object *internal_object, |
111 | union acpi_object *external_object, | |
112 | u8 * data_space, acpi_size * buffer_space_used) | |
1da177e4 | 113 | { |
4be44fcd | 114 | acpi_status status = AE_OK; |
1da177e4 | 115 | |
b229cf92 | 116 | ACPI_FUNCTION_TRACE(ut_copy_isimple_to_esimple); |
1da177e4 LT |
117 | |
118 | *buffer_space_used = 0; | |
119 | ||
120 | /* | |
121 | * Check for NULL object case (could be an uninitialized | |
122 | * package element) | |
123 | */ | |
124 | if (!internal_object) { | |
4be44fcd | 125 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
126 | } |
127 | ||
128 | /* Always clear the external object */ | |
129 | ||
4be44fcd | 130 | ACPI_MEMSET(external_object, 0, sizeof(union acpi_object)); |
1da177e4 LT |
131 | |
132 | /* | |
133 | * In general, the external object will be the same type as | |
134 | * the internal object | |
135 | */ | |
4be44fcd | 136 | external_object->type = ACPI_GET_OBJECT_TYPE(internal_object); |
1da177e4 LT |
137 | |
138 | /* However, only a limited number of external types are supported */ | |
139 | ||
4be44fcd | 140 | switch (ACPI_GET_OBJECT_TYPE(internal_object)) { |
1da177e4 LT |
141 | case ACPI_TYPE_STRING: |
142 | ||
4be44fcd | 143 | external_object->string.pointer = (char *)data_space; |
1da177e4 | 144 | external_object->string.length = internal_object->string.length; |
4be44fcd LB |
145 | *buffer_space_used = ACPI_ROUND_UP_TO_NATIVE_WORD((acpi_size) |
146 | internal_object-> | |
147 | string. | |
148 | length + 1); | |
149 | ||
150 | ACPI_MEMCPY((void *)data_space, | |
151 | (void *)internal_object->string.pointer, | |
152 | (acpi_size) internal_object->string.length + 1); | |
1da177e4 LT |
153 | break; |
154 | ||
1da177e4 LT |
155 | case ACPI_TYPE_BUFFER: |
156 | ||
157 | external_object->buffer.pointer = data_space; | |
158 | external_object->buffer.length = internal_object->buffer.length; | |
4be44fcd LB |
159 | *buffer_space_used = |
160 | ACPI_ROUND_UP_TO_NATIVE_WORD(internal_object->string. | |
161 | length); | |
1da177e4 | 162 | |
4be44fcd LB |
163 | ACPI_MEMCPY((void *)data_space, |
164 | (void *)internal_object->buffer.pointer, | |
165 | internal_object->buffer.length); | |
1da177e4 LT |
166 | break; |
167 | ||
1da177e4 LT |
168 | case ACPI_TYPE_INTEGER: |
169 | ||
170 | external_object->integer.value = internal_object->integer.value; | |
171 | break; | |
172 | ||
1da177e4 LT |
173 | case ACPI_TYPE_LOCAL_REFERENCE: |
174 | ||
175 | /* | |
176 | * This is an object reference. Attempt to dereference it. | |
177 | */ | |
178 | switch (internal_object->reference.opcode) { | |
179 | case AML_INT_NAMEPATH_OP: | |
180 | ||
181 | /* For namepath, return the object handle ("reference") */ | |
182 | ||
183 | default: | |
184 | /* | |
185 | * Use the object type of "Any" to indicate a reference | |
186 | * to object containing a handle to an ACPI named object. | |
187 | */ | |
188 | external_object->type = ACPI_TYPE_ANY; | |
4be44fcd LB |
189 | external_object->reference.handle = |
190 | internal_object->reference.node; | |
1da177e4 LT |
191 | break; |
192 | } | |
193 | break; | |
194 | ||
1da177e4 LT |
195 | case ACPI_TYPE_PROCESSOR: |
196 | ||
4be44fcd LB |
197 | external_object->processor.proc_id = |
198 | internal_object->processor.proc_id; | |
199 | external_object->processor.pblk_address = | |
200 | internal_object->processor.address; | |
201 | external_object->processor.pblk_length = | |
202 | internal_object->processor.length; | |
1da177e4 LT |
203 | break; |
204 | ||
1da177e4 LT |
205 | case ACPI_TYPE_POWER: |
206 | ||
207 | external_object->power_resource.system_level = | |
4be44fcd | 208 | internal_object->power_resource.system_level; |
1da177e4 LT |
209 | |
210 | external_object->power_resource.resource_order = | |
4be44fcd | 211 | internal_object->power_resource.resource_order; |
1da177e4 LT |
212 | break; |
213 | ||
1da177e4 LT |
214 | default: |
215 | /* | |
216 | * There is no corresponding external object type | |
217 | */ | |
b1dd9096 BM |
218 | ACPI_ERROR((AE_INFO, |
219 | "Unsupported object type, cannot convert to external object: %s", | |
220 | acpi_ut_get_type_name(ACPI_GET_OBJECT_TYPE | |
221 | (internal_object)))); | |
222 | ||
4be44fcd | 223 | return_ACPI_STATUS(AE_SUPPORT); |
1da177e4 LT |
224 | } |
225 | ||
4be44fcd | 226 | return_ACPI_STATUS(status); |
1da177e4 LT |
227 | } |
228 | ||
1da177e4 LT |
229 | /******************************************************************************* |
230 | * | |
231 | * FUNCTION: acpi_ut_copy_ielement_to_eelement | |
232 | * | |
233 | * PARAMETERS: acpi_pkg_callback | |
234 | * | |
235 | * RETURN: Status | |
236 | * | |
237 | * DESCRIPTION: Copy one package element to another package element | |
238 | * | |
239 | ******************************************************************************/ | |
240 | ||
44f6c012 | 241 | static acpi_status |
4be44fcd LB |
242 | acpi_ut_copy_ielement_to_eelement(u8 object_type, |
243 | union acpi_operand_object *source_object, | |
244 | union acpi_generic_state *state, | |
245 | void *context) | |
1da177e4 | 246 | { |
4be44fcd LB |
247 | acpi_status status = AE_OK; |
248 | struct acpi_pkg_info *info = (struct acpi_pkg_info *)context; | |
249 | acpi_size object_space; | |
250 | u32 this_index; | |
251 | union acpi_object *target_object; | |
1da177e4 | 252 | |
4be44fcd | 253 | ACPI_FUNCTION_ENTRY(); |
1da177e4 | 254 | |
4be44fcd | 255 | this_index = state->pkg.index; |
1da177e4 | 256 | target_object = (union acpi_object *) |
4be44fcd LB |
257 | &((union acpi_object *)(state->pkg.dest_object))->package. |
258 | elements[this_index]; | |
1da177e4 LT |
259 | |
260 | switch (object_type) { | |
261 | case ACPI_COPY_TYPE_SIMPLE: | |
262 | ||
263 | /* | |
264 | * This is a simple or null object | |
265 | */ | |
4be44fcd LB |
266 | status = acpi_ut_copy_isimple_to_esimple(source_object, |
267 | target_object, | |
268 | info->free_space, | |
269 | &object_space); | |
270 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
271 | return (status); |
272 | } | |
273 | break; | |
274 | ||
1da177e4 LT |
275 | case ACPI_COPY_TYPE_PACKAGE: |
276 | ||
277 | /* | |
278 | * Build the package object | |
279 | */ | |
4be44fcd LB |
280 | target_object->type = ACPI_TYPE_PACKAGE; |
281 | target_object->package.count = source_object->package.count; | |
44f6c012 | 282 | target_object->package.elements = |
4be44fcd | 283 | ACPI_CAST_PTR(union acpi_object, info->free_space); |
1da177e4 LT |
284 | |
285 | /* | |
286 | * Pass the new package object back to the package walk routine | |
287 | */ | |
288 | state->pkg.this_target_obj = target_object; | |
289 | ||
290 | /* | |
291 | * Save space for the array of objects (Package elements) | |
292 | * update the buffer length counter | |
293 | */ | |
4be44fcd LB |
294 | object_space = ACPI_ROUND_UP_TO_NATIVE_WORD((acpi_size) |
295 | target_object-> | |
296 | package.count * | |
297 | sizeof(union | |
298 | acpi_object)); | |
1da177e4 LT |
299 | break; |
300 | ||
1da177e4 LT |
301 | default: |
302 | return (AE_BAD_PARAMETER); | |
303 | } | |
304 | ||
4be44fcd LB |
305 | info->free_space += object_space; |
306 | info->length += object_space; | |
1da177e4 LT |
307 | return (status); |
308 | } | |
309 | ||
1da177e4 LT |
310 | /******************************************************************************* |
311 | * | |
312 | * FUNCTION: acpi_ut_copy_ipackage_to_epackage | |
313 | * | |
44f6c012 RM |
314 | * PARAMETERS: internal_object - Pointer to the object we are returning |
315 | * Buffer - Where the object is returned | |
316 | * space_used - Where the object length is returned | |
1da177e4 LT |
317 | * |
318 | * RETURN: Status | |
319 | * | |
320 | * DESCRIPTION: This function is called to place a package object in a user | |
321 | * buffer. A package object by definition contains other objects. | |
322 | * | |
323 | * The buffer is assumed to have sufficient space for the object. | |
324 | * The caller must have verified the buffer length needed using the | |
325 | * acpi_ut_get_object_size function before calling this function. | |
326 | * | |
327 | ******************************************************************************/ | |
328 | ||
329 | static acpi_status | |
4be44fcd LB |
330 | acpi_ut_copy_ipackage_to_epackage(union acpi_operand_object *internal_object, |
331 | u8 * buffer, acpi_size * space_used) | |
1da177e4 | 332 | { |
4be44fcd LB |
333 | union acpi_object *external_object; |
334 | acpi_status status; | |
335 | struct acpi_pkg_info info; | |
1da177e4 | 336 | |
b229cf92 | 337 | ACPI_FUNCTION_TRACE(ut_copy_ipackage_to_epackage); |
1da177e4 LT |
338 | |
339 | /* | |
340 | * First package at head of the buffer | |
341 | */ | |
4be44fcd | 342 | external_object = ACPI_CAST_PTR(union acpi_object, buffer); |
1da177e4 LT |
343 | |
344 | /* | |
345 | * Free space begins right after the first package | |
346 | */ | |
4be44fcd LB |
347 | info.length = ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)); |
348 | info.free_space = | |
349 | buffer + ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)); | |
1da177e4 LT |
350 | info.object_space = 0; |
351 | info.num_packages = 1; | |
352 | ||
4be44fcd LB |
353 | external_object->type = ACPI_GET_OBJECT_TYPE(internal_object); |
354 | external_object->package.count = internal_object->package.count; | |
355 | external_object->package.elements = ACPI_CAST_PTR(union acpi_object, | |
356 | info.free_space); | |
1da177e4 LT |
357 | |
358 | /* | |
359 | * Leave room for an array of ACPI_OBJECTS in the buffer | |
360 | * and move the free space past it | |
361 | */ | |
4be44fcd LB |
362 | info.length += (acpi_size) external_object->package.count * |
363 | ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)); | |
1da177e4 | 364 | info.free_space += external_object->package.count * |
4be44fcd | 365 | ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)); |
1da177e4 | 366 | |
4be44fcd LB |
367 | status = acpi_ut_walk_package_tree(internal_object, external_object, |
368 | acpi_ut_copy_ielement_to_eelement, | |
369 | &info); | |
1da177e4 LT |
370 | |
371 | *space_used = info.length; | |
4be44fcd | 372 | return_ACPI_STATUS(status); |
1da177e4 LT |
373 | } |
374 | ||
1da177e4 LT |
375 | /******************************************************************************* |
376 | * | |
377 | * FUNCTION: acpi_ut_copy_iobject_to_eobject | |
378 | * | |
44f6c012 RM |
379 | * PARAMETERS: internal_object - The internal object to be converted |
380 | * buffer_ptr - Where the object is returned | |
1da177e4 LT |
381 | * |
382 | * RETURN: Status | |
383 | * | |
384 | * DESCRIPTION: This function is called to build an API object to be returned to | |
385 | * the caller. | |
386 | * | |
387 | ******************************************************************************/ | |
388 | ||
389 | acpi_status | |
4be44fcd LB |
390 | acpi_ut_copy_iobject_to_eobject(union acpi_operand_object *internal_object, |
391 | struct acpi_buffer *ret_buffer) | |
1da177e4 | 392 | { |
4be44fcd | 393 | acpi_status status; |
1da177e4 | 394 | |
b229cf92 | 395 | ACPI_FUNCTION_TRACE(ut_copy_iobject_to_eobject); |
1da177e4 | 396 | |
4be44fcd | 397 | if (ACPI_GET_OBJECT_TYPE(internal_object) == ACPI_TYPE_PACKAGE) { |
1da177e4 LT |
398 | /* |
399 | * Package object: Copy all subobjects (including | |
400 | * nested packages) | |
401 | */ | |
4be44fcd LB |
402 | status = acpi_ut_copy_ipackage_to_epackage(internal_object, |
403 | ret_buffer->pointer, | |
404 | &ret_buffer->length); | |
405 | } else { | |
1da177e4 LT |
406 | /* |
407 | * Build a simple object (no nested objects) | |
408 | */ | |
4be44fcd | 409 | status = acpi_ut_copy_isimple_to_esimple(internal_object, |
c51a4de8 BM |
410 | ACPI_CAST_PTR(union |
411 | acpi_object, | |
412 | ret_buffer-> | |
413 | pointer), | |
414 | ACPI_ADD_PTR(u8, | |
415 | ret_buffer-> | |
416 | pointer, | |
417 | ACPI_ROUND_UP_TO_NATIVE_WORD | |
418 | (sizeof | |
419 | (union | |
420 | acpi_object))), | |
4be44fcd | 421 | &ret_buffer->length); |
1da177e4 LT |
422 | /* |
423 | * build simple does not include the object size in the length | |
424 | * so we add it in here | |
425 | */ | |
4be44fcd | 426 | ret_buffer->length += sizeof(union acpi_object); |
1da177e4 LT |
427 | } |
428 | ||
4be44fcd | 429 | return_ACPI_STATUS(status); |
1da177e4 LT |
430 | } |
431 | ||
1da177e4 LT |
432 | /******************************************************************************* |
433 | * | |
434 | * FUNCTION: acpi_ut_copy_esimple_to_isimple | |
435 | * | |
44f6c012 RM |
436 | * PARAMETERS: external_object - The external object to be converted |
437 | * ret_internal_object - Where the internal object is returned | |
1da177e4 LT |
438 | * |
439 | * RETURN: Status | |
440 | * | |
441 | * DESCRIPTION: This function copies an external object to an internal one. | |
442 | * NOTE: Pointers can be copied, we don't need to copy data. | |
443 | * (The pointers have to be valid in our address space no matter | |
444 | * what we do with them!) | |
445 | * | |
446 | ******************************************************************************/ | |
447 | ||
44f6c012 | 448 | static acpi_status |
4be44fcd LB |
449 | acpi_ut_copy_esimple_to_isimple(union acpi_object *external_object, |
450 | union acpi_operand_object **ret_internal_object) | |
1da177e4 | 451 | { |
4be44fcd | 452 | union acpi_operand_object *internal_object; |
1da177e4 | 453 | |
b229cf92 | 454 | ACPI_FUNCTION_TRACE(ut_copy_esimple_to_isimple); |
1da177e4 LT |
455 | |
456 | /* | |
457 | * Simple types supported are: String, Buffer, Integer | |
458 | */ | |
459 | switch (external_object->type) { | |
460 | case ACPI_TYPE_STRING: | |
461 | case ACPI_TYPE_BUFFER: | |
462 | case ACPI_TYPE_INTEGER: | |
463 | ||
4be44fcd LB |
464 | internal_object = acpi_ut_create_internal_object((u8) |
465 | external_object-> | |
466 | type); | |
1da177e4 | 467 | if (!internal_object) { |
4be44fcd | 468 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
469 | } |
470 | break; | |
471 | ||
472 | default: | |
473 | /* All other types are not supported */ | |
474 | ||
b1dd9096 BM |
475 | ACPI_ERROR((AE_INFO, |
476 | "Unsupported object type, cannot convert to internal object: %s", | |
477 | acpi_ut_get_type_name(external_object->type))); | |
478 | ||
4be44fcd | 479 | return_ACPI_STATUS(AE_SUPPORT); |
1da177e4 LT |
480 | } |
481 | ||
1da177e4 LT |
482 | /* Must COPY string and buffer contents */ |
483 | ||
484 | switch (external_object->type) { | |
485 | case ACPI_TYPE_STRING: | |
486 | ||
487 | internal_object->string.pointer = | |
8313524a BM |
488 | ACPI_ALLOCATE_ZEROED((acpi_size) external_object->string. |
489 | length + 1); | |
1da177e4 LT |
490 | if (!internal_object->string.pointer) { |
491 | goto error_exit; | |
492 | } | |
493 | ||
4be44fcd LB |
494 | ACPI_MEMCPY(internal_object->string.pointer, |
495 | external_object->string.pointer, | |
496 | external_object->string.length); | |
1da177e4 LT |
497 | |
498 | internal_object->string.length = external_object->string.length; | |
499 | break; | |
500 | ||
1da177e4 LT |
501 | case ACPI_TYPE_BUFFER: |
502 | ||
503 | internal_object->buffer.pointer = | |
8313524a | 504 | ACPI_ALLOCATE_ZEROED(external_object->buffer.length); |
1da177e4 LT |
505 | if (!internal_object->buffer.pointer) { |
506 | goto error_exit; | |
507 | } | |
508 | ||
4be44fcd LB |
509 | ACPI_MEMCPY(internal_object->buffer.pointer, |
510 | external_object->buffer.pointer, | |
511 | external_object->buffer.length); | |
1da177e4 LT |
512 | |
513 | internal_object->buffer.length = external_object->buffer.length; | |
24a3157a BM |
514 | |
515 | /* Mark buffer data valid */ | |
516 | ||
517 | internal_object->buffer.flags |= AOPOBJ_DATA_VALID; | |
1da177e4 LT |
518 | break; |
519 | ||
1da177e4 LT |
520 | case ACPI_TYPE_INTEGER: |
521 | ||
4be44fcd | 522 | internal_object->integer.value = external_object->integer.value; |
1da177e4 LT |
523 | break; |
524 | ||
525 | default: | |
526 | /* Other types can't get here */ | |
527 | break; | |
528 | } | |
529 | ||
530 | *ret_internal_object = internal_object; | |
4be44fcd | 531 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 532 | |
4be44fcd LB |
533 | error_exit: |
534 | acpi_ut_remove_reference(internal_object); | |
535 | return_ACPI_STATUS(AE_NO_MEMORY); | |
1da177e4 LT |
536 | } |
537 | ||
1da177e4 LT |
538 | /******************************************************************************* |
539 | * | |
540 | * FUNCTION: acpi_ut_copy_epackage_to_ipackage | |
541 | * | |
6287ee32 BM |
542 | * PARAMETERS: external_object - The external object to be converted |
543 | * internal_object - Where the internal object is returned | |
1da177e4 LT |
544 | * |
545 | * RETURN: Status | |
546 | * | |
6287ee32 BM |
547 | * DESCRIPTION: Copy an external package object to an internal package. |
548 | * Handles nested packages. | |
1da177e4 LT |
549 | * |
550 | ******************************************************************************/ | |
551 | ||
552 | static acpi_status | |
6287ee32 BM |
553 | acpi_ut_copy_epackage_to_ipackage(union acpi_object *external_object, |
554 | union acpi_operand_object **internal_object) | |
1da177e4 | 555 | { |
6287ee32 BM |
556 | acpi_status status = AE_OK; |
557 | union acpi_operand_object *package_object; | |
558 | union acpi_operand_object **package_elements; | |
559 | acpi_native_uint i; | |
1da177e4 | 560 | |
b229cf92 | 561 | ACPI_FUNCTION_TRACE(ut_copy_epackage_to_ipackage); |
1da177e4 | 562 | |
6287ee32 | 563 | /* Create the package object */ |
1da177e4 | 564 | |
6287ee32 BM |
565 | package_object = |
566 | acpi_ut_create_package_object(external_object->package.count); | |
567 | if (!package_object) { | |
568 | return_ACPI_STATUS(AE_NO_MEMORY); | |
569 | } | |
1da177e4 | 570 | |
6287ee32 | 571 | package_elements = package_object->package.elements; |
1da177e4 LT |
572 | |
573 | /* | |
6287ee32 BM |
574 | * Recursive implementation. Probably ok, since nested external packages |
575 | * as parameters should be very rare. | |
1da177e4 | 576 | */ |
6287ee32 BM |
577 | for (i = 0; i < external_object->package.count; i++) { |
578 | status = | |
579 | acpi_ut_copy_eobject_to_iobject(&external_object->package. | |
580 | elements[i], | |
581 | &package_elements[i]); | |
582 | if (ACPI_FAILURE(status)) { | |
1da177e4 | 583 | |
6287ee32 | 584 | /* Truncate package and delete it */ |
1da177e4 | 585 | |
1d18c058 | 586 | package_object->package.count = (u32) i; |
6287ee32 BM |
587 | package_elements[i] = NULL; |
588 | acpi_ut_remove_reference(package_object); | |
589 | return_ACPI_STATUS(status); | |
590 | } | |
591 | } | |
1da177e4 | 592 | |
24a3157a BM |
593 | /* Mark package data valid */ |
594 | ||
595 | package_object->package.flags |= AOPOBJ_DATA_VALID; | |
596 | ||
6287ee32 BM |
597 | *internal_object = package_object; |
598 | return_ACPI_STATUS(status); | |
599 | } | |
1da177e4 LT |
600 | |
601 | /******************************************************************************* | |
602 | * | |
603 | * FUNCTION: acpi_ut_copy_eobject_to_iobject | |
604 | * | |
6287ee32 BM |
605 | * PARAMETERS: external_object - The external object to be converted |
606 | * internal_object - Where the internal object is returned | |
1da177e4 | 607 | * |
6287ee32 | 608 | * RETURN: Status - the status of the call |
1da177e4 LT |
609 | * |
610 | * DESCRIPTION: Converts an external object to an internal object. | |
611 | * | |
612 | ******************************************************************************/ | |
613 | ||
614 | acpi_status | |
4be44fcd LB |
615 | acpi_ut_copy_eobject_to_iobject(union acpi_object *external_object, |
616 | union acpi_operand_object **internal_object) | |
1da177e4 | 617 | { |
4be44fcd | 618 | acpi_status status; |
1da177e4 | 619 | |
b229cf92 | 620 | ACPI_FUNCTION_TRACE(ut_copy_eobject_to_iobject); |
1da177e4 LT |
621 | |
622 | if (external_object->type == ACPI_TYPE_PACKAGE) { | |
6287ee32 BM |
623 | status = |
624 | acpi_ut_copy_epackage_to_ipackage(external_object, | |
625 | internal_object); | |
626 | } else { | |
1da177e4 LT |
627 | /* |
628 | * Build a simple object (no nested objects) | |
629 | */ | |
4be44fcd LB |
630 | status = |
631 | acpi_ut_copy_esimple_to_isimple(external_object, | |
632 | internal_object); | |
1da177e4 LT |
633 | } |
634 | ||
4be44fcd | 635 | return_ACPI_STATUS(status); |
1da177e4 LT |
636 | } |
637 | ||
1da177e4 LT |
638 | /******************************************************************************* |
639 | * | |
640 | * FUNCTION: acpi_ut_copy_simple_object | |
641 | * | |
642 | * PARAMETERS: source_desc - The internal object to be copied | |
643 | * dest_desc - New target object | |
644 | * | |
645 | * RETURN: Status | |
646 | * | |
647 | * DESCRIPTION: Simple copy of one internal object to another. Reference count | |
648 | * of the destination object is preserved. | |
649 | * | |
650 | ******************************************************************************/ | |
651 | ||
44f6c012 | 652 | static acpi_status |
4be44fcd LB |
653 | acpi_ut_copy_simple_object(union acpi_operand_object *source_desc, |
654 | union acpi_operand_object *dest_desc) | |
1da177e4 | 655 | { |
4be44fcd LB |
656 | u16 reference_count; |
657 | union acpi_operand_object *next_object; | |
1da177e4 LT |
658 | |
659 | /* Save fields from destination that we don't want to overwrite */ | |
660 | ||
661 | reference_count = dest_desc->common.reference_count; | |
662 | next_object = dest_desc->common.next_object; | |
663 | ||
4be44fcd | 664 | /* Copy the entire source object over the destination object */ |
1da177e4 | 665 | |
4be44fcd LB |
666 | ACPI_MEMCPY((char *)dest_desc, (char *)source_desc, |
667 | sizeof(union acpi_operand_object)); | |
1da177e4 LT |
668 | |
669 | /* Restore the saved fields */ | |
670 | ||
671 | dest_desc->common.reference_count = reference_count; | |
672 | dest_desc->common.next_object = next_object; | |
673 | ||
6f42ccf2 RM |
674 | /* New object is not static, regardless of source */ |
675 | ||
676 | dest_desc->common.flags &= ~AOPOBJ_STATIC_POINTER; | |
677 | ||
1da177e4 LT |
678 | /* Handle the objects with extra data */ |
679 | ||
4be44fcd | 680 | switch (ACPI_GET_OBJECT_TYPE(dest_desc)) { |
1da177e4 | 681 | case ACPI_TYPE_BUFFER: |
1da177e4 LT |
682 | /* |
683 | * Allocate and copy the actual buffer if and only if: | |
684 | * 1) There is a valid buffer pointer | |
6f42ccf2 | 685 | * 2) The buffer has a length > 0 |
1da177e4 LT |
686 | */ |
687 | if ((source_desc->buffer.pointer) && | |
4be44fcd | 688 | (source_desc->buffer.length)) { |
6f42ccf2 | 689 | dest_desc->buffer.pointer = |
8313524a | 690 | ACPI_ALLOCATE(source_desc->buffer.length); |
6f42ccf2 RM |
691 | if (!dest_desc->buffer.pointer) { |
692 | return (AE_NO_MEMORY); | |
693 | } | |
1da177e4 | 694 | |
6f42ccf2 | 695 | /* Copy the actual buffer data */ |
1da177e4 | 696 | |
4be44fcd LB |
697 | ACPI_MEMCPY(dest_desc->buffer.pointer, |
698 | source_desc->buffer.pointer, | |
699 | source_desc->buffer.length); | |
1da177e4 LT |
700 | } |
701 | break; | |
702 | ||
703 | case ACPI_TYPE_STRING: | |
1da177e4 LT |
704 | /* |
705 | * Allocate and copy the actual string if and only if: | |
706 | * 1) There is a valid string pointer | |
6f42ccf2 | 707 | * (Pointer to a NULL string is allowed) |
1da177e4 | 708 | */ |
6f42ccf2 | 709 | if (source_desc->string.pointer) { |
1da177e4 | 710 | dest_desc->string.pointer = |
8313524a BM |
711 | ACPI_ALLOCATE((acpi_size) source_desc->string. |
712 | length + 1); | |
1da177e4 LT |
713 | if (!dest_desc->string.pointer) { |
714 | return (AE_NO_MEMORY); | |
715 | } | |
716 | ||
6f42ccf2 RM |
717 | /* Copy the actual string data */ |
718 | ||
4be44fcd LB |
719 | ACPI_MEMCPY(dest_desc->string.pointer, |
720 | source_desc->string.pointer, | |
721 | (acpi_size) source_desc->string.length + 1); | |
1da177e4 LT |
722 | } |
723 | break; | |
724 | ||
725 | case ACPI_TYPE_LOCAL_REFERENCE: | |
726 | /* | |
727 | * We copied the reference object, so we now must add a reference | |
728 | * to the object pointed to by the reference | |
bc7a36ab LM |
729 | * |
730 | * DDBHandle reference (from Load/load_table is a special reference, | |
731 | * it's Reference.Object is the table index, so does not need to | |
732 | * increase the reference count | |
1da177e4 | 733 | */ |
bc7a36ab LM |
734 | if (source_desc->reference.opcode == AML_LOAD_OP) { |
735 | break; | |
736 | } | |
737 | ||
4be44fcd | 738 | acpi_ut_add_reference(source_desc->reference.object); |
1da177e4 LT |
739 | break; |
740 | ||
6b366e2f FS |
741 | case ACPI_TYPE_REGION: |
742 | /* | |
743 | * We copied the Region Handler, so we now must add a reference | |
744 | */ | |
745 | if (dest_desc->region.handler) { | |
746 | acpi_ut_add_reference(dest_desc->region.handler); | |
747 | } | |
748 | break; | |
749 | ||
1da177e4 LT |
750 | default: |
751 | /* Nothing to do for other simple objects */ | |
752 | break; | |
753 | } | |
754 | ||
755 | return (AE_OK); | |
756 | } | |
757 | ||
1da177e4 LT |
758 | /******************************************************************************* |
759 | * | |
760 | * FUNCTION: acpi_ut_copy_ielement_to_ielement | |
761 | * | |
762 | * PARAMETERS: acpi_pkg_callback | |
763 | * | |
764 | * RETURN: Status | |
765 | * | |
766 | * DESCRIPTION: Copy one package element to another package element | |
767 | * | |
768 | ******************************************************************************/ | |
769 | ||
44f6c012 | 770 | static acpi_status |
4be44fcd LB |
771 | acpi_ut_copy_ielement_to_ielement(u8 object_type, |
772 | union acpi_operand_object *source_object, | |
773 | union acpi_generic_state *state, | |
774 | void *context) | |
1da177e4 | 775 | { |
4be44fcd LB |
776 | acpi_status status = AE_OK; |
777 | u32 this_index; | |
778 | union acpi_operand_object **this_target_ptr; | |
779 | union acpi_operand_object *target_object; | |
1da177e4 | 780 | |
4be44fcd | 781 | ACPI_FUNCTION_ENTRY(); |
1da177e4 | 782 | |
4be44fcd | 783 | this_index = state->pkg.index; |
1da177e4 | 784 | this_target_ptr = (union acpi_operand_object **) |
4be44fcd | 785 | &state->pkg.dest_object->package.elements[this_index]; |
1da177e4 LT |
786 | |
787 | switch (object_type) { | |
788 | case ACPI_COPY_TYPE_SIMPLE: | |
789 | ||
790 | /* A null source object indicates a (legal) null package element */ | |
791 | ||
792 | if (source_object) { | |
793 | /* | |
794 | * This is a simple object, just copy it | |
795 | */ | |
4be44fcd LB |
796 | target_object = |
797 | acpi_ut_create_internal_object(ACPI_GET_OBJECT_TYPE | |
798 | (source_object)); | |
1da177e4 LT |
799 | if (!target_object) { |
800 | return (AE_NO_MEMORY); | |
801 | } | |
802 | ||
4be44fcd LB |
803 | status = |
804 | acpi_ut_copy_simple_object(source_object, | |
805 | target_object); | |
806 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
807 | goto error_exit; |
808 | } | |
809 | ||
810 | *this_target_ptr = target_object; | |
4be44fcd | 811 | } else { |
1da177e4 LT |
812 | /* Pass through a null element */ |
813 | ||
814 | *this_target_ptr = NULL; | |
815 | } | |
816 | break; | |
817 | ||
1da177e4 LT |
818 | case ACPI_COPY_TYPE_PACKAGE: |
819 | ||
820 | /* | |
821 | * This object is a package - go down another nesting level | |
822 | * Create and build the package object | |
823 | */ | |
4be44fcd | 824 | target_object = |
6287ee32 | 825 | acpi_ut_create_package_object(source_object->package.count); |
1da177e4 LT |
826 | if (!target_object) { |
827 | return (AE_NO_MEMORY); | |
828 | } | |
829 | ||
1da177e4 LT |
830 | target_object->common.flags = source_object->common.flags; |
831 | ||
6287ee32 | 832 | /* Pass the new package object back to the package walk routine */ |
1da177e4 | 833 | |
1da177e4 LT |
834 | state->pkg.this_target_obj = target_object; |
835 | ||
6287ee32 BM |
836 | /* Store the object pointer in the parent package object */ |
837 | ||
1da177e4 LT |
838 | *this_target_ptr = target_object; |
839 | break; | |
840 | ||
1da177e4 LT |
841 | default: |
842 | return (AE_BAD_PARAMETER); | |
843 | } | |
844 | ||
845 | return (status); | |
846 | ||
4be44fcd LB |
847 | error_exit: |
848 | acpi_ut_remove_reference(target_object); | |
1da177e4 LT |
849 | return (status); |
850 | } | |
851 | ||
1da177e4 LT |
852 | /******************************************************************************* |
853 | * | |
854 | * FUNCTION: acpi_ut_copy_ipackage_to_ipackage | |
855 | * | |
856 | * PARAMETERS: *source_obj - Pointer to the source package object | |
857 | * *dest_obj - Where the internal object is returned | |
858 | * | |
859 | * RETURN: Status - the status of the call | |
860 | * | |
861 | * DESCRIPTION: This function is called to copy an internal package object | |
862 | * into another internal package object. | |
863 | * | |
864 | ******************************************************************************/ | |
865 | ||
44f6c012 | 866 | static acpi_status |
4be44fcd LB |
867 | acpi_ut_copy_ipackage_to_ipackage(union acpi_operand_object *source_obj, |
868 | union acpi_operand_object *dest_obj, | |
869 | struct acpi_walk_state *walk_state) | |
1da177e4 | 870 | { |
4be44fcd | 871 | acpi_status status = AE_OK; |
1da177e4 | 872 | |
b229cf92 | 873 | ACPI_FUNCTION_TRACE(ut_copy_ipackage_to_ipackage); |
1da177e4 | 874 | |
4be44fcd LB |
875 | dest_obj->common.type = ACPI_GET_OBJECT_TYPE(source_obj); |
876 | dest_obj->common.flags = source_obj->common.flags; | |
1da177e4 LT |
877 | dest_obj->package.count = source_obj->package.count; |
878 | ||
879 | /* | |
880 | * Create the object array and walk the source package tree | |
881 | */ | |
8313524a BM |
882 | dest_obj->package.elements = ACPI_ALLOCATE_ZEROED(((acpi_size) |
883 | source_obj->package. | |
884 | count + | |
885 | 1) * sizeof(void *)); | |
1da177e4 | 886 | if (!dest_obj->package.elements) { |
b8e4d893 | 887 | ACPI_ERROR((AE_INFO, "Package allocation failure")); |
4be44fcd | 888 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
889 | } |
890 | ||
891 | /* | |
892 | * Copy the package element-by-element by walking the package "tree". | |
893 | * This handles nested packages of arbitrary depth. | |
894 | */ | |
4be44fcd LB |
895 | status = acpi_ut_walk_package_tree(source_obj, dest_obj, |
896 | acpi_ut_copy_ielement_to_ielement, | |
897 | walk_state); | |
898 | if (ACPI_FAILURE(status)) { | |
52fc0b02 | 899 | |
1da177e4 LT |
900 | /* On failure, delete the destination package object */ |
901 | ||
4be44fcd | 902 | acpi_ut_remove_reference(dest_obj); |
1da177e4 LT |
903 | } |
904 | ||
4be44fcd | 905 | return_ACPI_STATUS(status); |
1da177e4 LT |
906 | } |
907 | ||
1da177e4 LT |
908 | /******************************************************************************* |
909 | * | |
910 | * FUNCTION: acpi_ut_copy_iobject_to_iobject | |
911 | * | |
912 | * PARAMETERS: walk_state - Current walk state | |
913 | * source_desc - The internal object to be copied | |
914 | * dest_desc - Where the copied object is returned | |
915 | * | |
916 | * RETURN: Status | |
917 | * | |
918 | * DESCRIPTION: Copy an internal object to a new internal object | |
919 | * | |
920 | ******************************************************************************/ | |
921 | ||
922 | acpi_status | |
4be44fcd LB |
923 | acpi_ut_copy_iobject_to_iobject(union acpi_operand_object *source_desc, |
924 | union acpi_operand_object **dest_desc, | |
925 | struct acpi_walk_state *walk_state) | |
1da177e4 | 926 | { |
4be44fcd | 927 | acpi_status status = AE_OK; |
1da177e4 | 928 | |
b229cf92 | 929 | ACPI_FUNCTION_TRACE(ut_copy_iobject_to_iobject); |
1da177e4 LT |
930 | |
931 | /* Create the top level object */ | |
932 | ||
4be44fcd LB |
933 | *dest_desc = |
934 | acpi_ut_create_internal_object(ACPI_GET_OBJECT_TYPE(source_desc)); | |
1da177e4 | 935 | if (!*dest_desc) { |
4be44fcd | 936 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
937 | } |
938 | ||
939 | /* Copy the object and possible subobjects */ | |
940 | ||
4be44fcd LB |
941 | if (ACPI_GET_OBJECT_TYPE(source_desc) == ACPI_TYPE_PACKAGE) { |
942 | status = | |
943 | acpi_ut_copy_ipackage_to_ipackage(source_desc, *dest_desc, | |
944 | walk_state); | |
945 | } else { | |
946 | status = acpi_ut_copy_simple_object(source_desc, *dest_desc); | |
1da177e4 LT |
947 | } |
948 | ||
4be44fcd | 949 | return_ACPI_STATUS(status); |
1da177e4 | 950 | } |