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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: utcopy - Internal to external object translation utilities | |
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 LT |
44 | #include <acpi/acpi.h> |
45 | #include <acpi/amlcode.h> | |
cd0b2248 BM |
46 | #include <acpi/acnamesp.h> |
47 | ||
1da177e4 | 48 | |
1da177e4 | 49 | #define _COMPONENT ACPI_UTILITIES |
4be44fcd | 50 | ACPI_MODULE_NAME("utcopy") |
1da177e4 | 51 | |
44f6c012 | 52 | /* Local prototypes */ |
44f6c012 | 53 | static acpi_status |
4be44fcd LB |
54 | acpi_ut_copy_isimple_to_esimple(union acpi_operand_object *internal_object, |
55 | union acpi_object *external_object, | |
56 | u8 * data_space, acpi_size * buffer_space_used); | |
44f6c012 RM |
57 | |
58 | static acpi_status | |
4be44fcd LB |
59 | acpi_ut_copy_ielement_to_ielement(u8 object_type, |
60 | union acpi_operand_object *source_object, | |
61 | union acpi_generic_state *state, | |
62 | void *context); | |
44f6c012 RM |
63 | |
64 | static acpi_status | |
4be44fcd LB |
65 | acpi_ut_copy_ipackage_to_epackage(union acpi_operand_object *internal_object, |
66 | u8 * buffer, acpi_size * space_used); | |
44f6c012 RM |
67 | |
68 | static acpi_status | |
4be44fcd LB |
69 | acpi_ut_copy_esimple_to_isimple(union acpi_object *user_obj, |
70 | union acpi_operand_object **return_obj); | |
44f6c012 | 71 | |
6287ee32 BM |
72 | static acpi_status |
73 | acpi_ut_copy_epackage_to_ipackage(union acpi_object *external_object, | |
74 | union acpi_operand_object **internal_object); | |
75 | ||
44f6c012 | 76 | static acpi_status |
4be44fcd LB |
77 | acpi_ut_copy_simple_object(union acpi_operand_object *source_desc, |
78 | union acpi_operand_object *dest_desc); | |
44f6c012 RM |
79 | |
80 | static acpi_status | |
4be44fcd LB |
81 | acpi_ut_copy_ielement_to_eelement(u8 object_type, |
82 | union acpi_operand_object *source_object, | |
83 | union acpi_generic_state *state, | |
84 | void *context); | |
44f6c012 RM |
85 | |
86 | static acpi_status | |
4be44fcd LB |
87 | acpi_ut_copy_ipackage_to_ipackage(union acpi_operand_object *source_obj, |
88 | union acpi_operand_object *dest_obj, | |
89 | struct acpi_walk_state *walk_state); | |
1da177e4 LT |
90 | |
91 | /******************************************************************************* | |
92 | * | |
93 | * FUNCTION: acpi_ut_copy_isimple_to_esimple | |
94 | * | |
44f6c012 RM |
95 | * PARAMETERS: internal_object - Source object to be copied |
96 | * external_object - Where to return the copied object | |
97 | * data_space - Where object data is returned (such as | |
98 | * buffer and string data) | |
99 | * buffer_space_used - Length of data_space that was used | |
1da177e4 LT |
100 | * |
101 | * RETURN: Status | |
102 | * | |
44f6c012 RM |
103 | * DESCRIPTION: This function is called to copy a simple internal object to |
104 | * an external object. | |
1da177e4 | 105 | * |
44f6c012 RM |
106 | * The data_space buffer is assumed to have sufficient space for |
107 | * the object. | |
1da177e4 LT |
108 | * |
109 | ******************************************************************************/ | |
110 | ||
111 | static acpi_status | |
4be44fcd LB |
112 | acpi_ut_copy_isimple_to_esimple(union acpi_operand_object *internal_object, |
113 | union acpi_object *external_object, | |
114 | u8 * data_space, acpi_size * buffer_space_used) | |
1da177e4 | 115 | { |
4be44fcd | 116 | acpi_status status = AE_OK; |
1da177e4 | 117 | |
b229cf92 | 118 | ACPI_FUNCTION_TRACE(ut_copy_isimple_to_esimple); |
1da177e4 LT |
119 | |
120 | *buffer_space_used = 0; | |
121 | ||
122 | /* | |
123 | * Check for NULL object case (could be an uninitialized | |
124 | * package element) | |
125 | */ | |
126 | if (!internal_object) { | |
4be44fcd | 127 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
128 | } |
129 | ||
130 | /* Always clear the external object */ | |
131 | ||
4be44fcd | 132 | ACPI_MEMSET(external_object, 0, sizeof(union acpi_object)); |
1da177e4 LT |
133 | |
134 | /* | |
135 | * In general, the external object will be the same type as | |
136 | * the internal object | |
137 | */ | |
4be44fcd | 138 | external_object->type = ACPI_GET_OBJECT_TYPE(internal_object); |
1da177e4 LT |
139 | |
140 | /* However, only a limited number of external types are supported */ | |
141 | ||
4be44fcd | 142 | switch (ACPI_GET_OBJECT_TYPE(internal_object)) { |
1da177e4 LT |
143 | case ACPI_TYPE_STRING: |
144 | ||
4be44fcd | 145 | external_object->string.pointer = (char *)data_space; |
1da177e4 | 146 | external_object->string.length = internal_object->string.length; |
4be44fcd LB |
147 | *buffer_space_used = ACPI_ROUND_UP_TO_NATIVE_WORD((acpi_size) |
148 | internal_object-> | |
149 | string. | |
150 | length + 1); | |
151 | ||
152 | ACPI_MEMCPY((void *)data_space, | |
153 | (void *)internal_object->string.pointer, | |
154 | (acpi_size) internal_object->string.length + 1); | |
1da177e4 LT |
155 | break; |
156 | ||
1da177e4 LT |
157 | case ACPI_TYPE_BUFFER: |
158 | ||
159 | external_object->buffer.pointer = data_space; | |
160 | external_object->buffer.length = internal_object->buffer.length; | |
4be44fcd LB |
161 | *buffer_space_used = |
162 | ACPI_ROUND_UP_TO_NATIVE_WORD(internal_object->string. | |
163 | length); | |
1da177e4 | 164 | |
4be44fcd LB |
165 | ACPI_MEMCPY((void *)data_space, |
166 | (void *)internal_object->buffer.pointer, | |
167 | internal_object->buffer.length); | |
1da177e4 LT |
168 | break; |
169 | ||
1da177e4 LT |
170 | case ACPI_TYPE_INTEGER: |
171 | ||
172 | external_object->integer.value = internal_object->integer.value; | |
173 | break; | |
174 | ||
1da177e4 LT |
175 | case ACPI_TYPE_LOCAL_REFERENCE: |
176 | ||
cd0b2248 BM |
177 | /* This is an object reference. */ |
178 | ||
1da177e4 LT |
179 | switch (internal_object->reference.opcode) { |
180 | case AML_INT_NAMEPATH_OP: | |
181 | ||
182 | /* For namepath, return the object handle ("reference") */ | |
183 | ||
184 | default: | |
cd0b2248 BM |
185 | |
186 | /* We are referring to the namespace node */ | |
187 | ||
4be44fcd LB |
188 | external_object->reference.handle = |
189 | internal_object->reference.node; | |
cd0b2248 BM |
190 | external_object->reference.actual_type = |
191 | acpi_ns_get_type(internal_object->reference.node); | |
1da177e4 LT |
192 | break; |
193 | } | |
194 | break; | |
195 | ||
1da177e4 LT |
196 | case ACPI_TYPE_PROCESSOR: |
197 | ||
4be44fcd LB |
198 | external_object->processor.proc_id = |
199 | internal_object->processor.proc_id; | |
200 | external_object->processor.pblk_address = | |
201 | internal_object->processor.address; | |
202 | external_object->processor.pblk_length = | |
203 | internal_object->processor.length; | |
1da177e4 LT |
204 | break; |
205 | ||
1da177e4 LT |
206 | case ACPI_TYPE_POWER: |
207 | ||
208 | external_object->power_resource.system_level = | |
4be44fcd | 209 | internal_object->power_resource.system_level; |
1da177e4 LT |
210 | |
211 | external_object->power_resource.resource_order = | |
4be44fcd | 212 | internal_object->power_resource.resource_order; |
1da177e4 LT |
213 | break; |
214 | ||
1da177e4 LT |
215 | default: |
216 | /* | |
217 | * There is no corresponding external object type | |
218 | */ | |
b1dd9096 BM |
219 | ACPI_ERROR((AE_INFO, |
220 | "Unsupported object type, cannot convert to external object: %s", | |
221 | acpi_ut_get_type_name(ACPI_GET_OBJECT_TYPE | |
222 | (internal_object)))); | |
223 | ||
4be44fcd | 224 | return_ACPI_STATUS(AE_SUPPORT); |
1da177e4 LT |
225 | } |
226 | ||
4be44fcd | 227 | return_ACPI_STATUS(status); |
1da177e4 LT |
228 | } |
229 | ||
1da177e4 LT |
230 | /******************************************************************************* |
231 | * | |
232 | * FUNCTION: acpi_ut_copy_ielement_to_eelement | |
233 | * | |
234 | * PARAMETERS: acpi_pkg_callback | |
235 | * | |
236 | * RETURN: Status | |
237 | * | |
238 | * DESCRIPTION: Copy one package element to another package element | |
239 | * | |
240 | ******************************************************************************/ | |
241 | ||
44f6c012 | 242 | static acpi_status |
4be44fcd LB |
243 | acpi_ut_copy_ielement_to_eelement(u8 object_type, |
244 | union acpi_operand_object *source_object, | |
245 | union acpi_generic_state *state, | |
246 | void *context) | |
1da177e4 | 247 | { |
4be44fcd LB |
248 | acpi_status status = AE_OK; |
249 | struct acpi_pkg_info *info = (struct acpi_pkg_info *)context; | |
250 | acpi_size object_space; | |
251 | u32 this_index; | |
252 | union acpi_object *target_object; | |
1da177e4 | 253 | |
4be44fcd | 254 | ACPI_FUNCTION_ENTRY(); |
1da177e4 | 255 | |
4be44fcd | 256 | this_index = state->pkg.index; |
1da177e4 | 257 | target_object = (union acpi_object *) |
4be44fcd LB |
258 | &((union acpi_object *)(state->pkg.dest_object))->package. |
259 | elements[this_index]; | |
1da177e4 LT |
260 | |
261 | switch (object_type) { | |
262 | case ACPI_COPY_TYPE_SIMPLE: | |
263 | ||
264 | /* | |
265 | * This is a simple or null object | |
266 | */ | |
4be44fcd LB |
267 | status = acpi_ut_copy_isimple_to_esimple(source_object, |
268 | target_object, | |
269 | info->free_space, | |
270 | &object_space); | |
271 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
272 | return (status); |
273 | } | |
274 | break; | |
275 | ||
1da177e4 LT |
276 | case ACPI_COPY_TYPE_PACKAGE: |
277 | ||
278 | /* | |
279 | * Build the package object | |
280 | */ | |
4be44fcd LB |
281 | target_object->type = ACPI_TYPE_PACKAGE; |
282 | target_object->package.count = source_object->package.count; | |
44f6c012 | 283 | target_object->package.elements = |
4be44fcd | 284 | ACPI_CAST_PTR(union acpi_object, info->free_space); |
1da177e4 LT |
285 | |
286 | /* | |
287 | * Pass the new package object back to the package walk routine | |
288 | */ | |
289 | state->pkg.this_target_obj = target_object; | |
290 | ||
291 | /* | |
292 | * Save space for the array of objects (Package elements) | |
293 | * update the buffer length counter | |
294 | */ | |
4be44fcd LB |
295 | object_space = ACPI_ROUND_UP_TO_NATIVE_WORD((acpi_size) |
296 | target_object-> | |
297 | package.count * | |
298 | sizeof(union | |
299 | acpi_object)); | |
1da177e4 LT |
300 | break; |
301 | ||
1da177e4 LT |
302 | default: |
303 | return (AE_BAD_PARAMETER); | |
304 | } | |
305 | ||
4be44fcd LB |
306 | info->free_space += object_space; |
307 | info->length += object_space; | |
1da177e4 LT |
308 | return (status); |
309 | } | |
310 | ||
1da177e4 LT |
311 | /******************************************************************************* |
312 | * | |
313 | * FUNCTION: acpi_ut_copy_ipackage_to_epackage | |
314 | * | |
44f6c012 RM |
315 | * PARAMETERS: internal_object - Pointer to the object we are returning |
316 | * Buffer - Where the object is returned | |
317 | * space_used - Where the object length is returned | |
1da177e4 LT |
318 | * |
319 | * RETURN: Status | |
320 | * | |
321 | * DESCRIPTION: This function is called to place a package object in a user | |
322 | * buffer. A package object by definition contains other objects. | |
323 | * | |
324 | * The buffer is assumed to have sufficient space for the object. | |
325 | * The caller must have verified the buffer length needed using the | |
326 | * acpi_ut_get_object_size function before calling this function. | |
327 | * | |
328 | ******************************************************************************/ | |
329 | ||
330 | static acpi_status | |
4be44fcd LB |
331 | acpi_ut_copy_ipackage_to_epackage(union acpi_operand_object *internal_object, |
332 | u8 * buffer, acpi_size * space_used) | |
1da177e4 | 333 | { |
4be44fcd LB |
334 | union acpi_object *external_object; |
335 | acpi_status status; | |
336 | struct acpi_pkg_info info; | |
1da177e4 | 337 | |
b229cf92 | 338 | ACPI_FUNCTION_TRACE(ut_copy_ipackage_to_epackage); |
1da177e4 LT |
339 | |
340 | /* | |
341 | * First package at head of the buffer | |
342 | */ | |
4be44fcd | 343 | external_object = ACPI_CAST_PTR(union acpi_object, buffer); |
1da177e4 LT |
344 | |
345 | /* | |
346 | * Free space begins right after the first package | |
347 | */ | |
4be44fcd LB |
348 | info.length = ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)); |
349 | info.free_space = | |
350 | buffer + ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)); | |
1da177e4 LT |
351 | info.object_space = 0; |
352 | info.num_packages = 1; | |
353 | ||
4be44fcd LB |
354 | external_object->type = ACPI_GET_OBJECT_TYPE(internal_object); |
355 | external_object->package.count = internal_object->package.count; | |
356 | external_object->package.elements = ACPI_CAST_PTR(union acpi_object, | |
357 | info.free_space); | |
1da177e4 LT |
358 | |
359 | /* | |
360 | * Leave room for an array of ACPI_OBJECTS in the buffer | |
361 | * and move the free space past it | |
362 | */ | |
4be44fcd LB |
363 | info.length += (acpi_size) external_object->package.count * |
364 | ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)); | |
1da177e4 | 365 | info.free_space += external_object->package.count * |
4be44fcd | 366 | ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)); |
1da177e4 | 367 | |
4be44fcd LB |
368 | status = acpi_ut_walk_package_tree(internal_object, external_object, |
369 | acpi_ut_copy_ielement_to_eelement, | |
370 | &info); | |
1da177e4 LT |
371 | |
372 | *space_used = info.length; | |
4be44fcd | 373 | return_ACPI_STATUS(status); |
1da177e4 LT |
374 | } |
375 | ||
1da177e4 LT |
376 | /******************************************************************************* |
377 | * | |
378 | * FUNCTION: acpi_ut_copy_iobject_to_eobject | |
379 | * | |
44f6c012 RM |
380 | * PARAMETERS: internal_object - The internal object to be converted |
381 | * buffer_ptr - Where the object is returned | |
1da177e4 LT |
382 | * |
383 | * RETURN: Status | |
384 | * | |
385 | * DESCRIPTION: This function is called to build an API object to be returned to | |
386 | * the caller. | |
387 | * | |
388 | ******************************************************************************/ | |
389 | ||
390 | acpi_status | |
4be44fcd LB |
391 | acpi_ut_copy_iobject_to_eobject(union acpi_operand_object *internal_object, |
392 | struct acpi_buffer *ret_buffer) | |
1da177e4 | 393 | { |
4be44fcd | 394 | acpi_status status; |
1da177e4 | 395 | |
b229cf92 | 396 | ACPI_FUNCTION_TRACE(ut_copy_iobject_to_eobject); |
1da177e4 | 397 | |
4be44fcd | 398 | if (ACPI_GET_OBJECT_TYPE(internal_object) == ACPI_TYPE_PACKAGE) { |
1da177e4 LT |
399 | /* |
400 | * Package object: Copy all subobjects (including | |
401 | * nested packages) | |
402 | */ | |
4be44fcd LB |
403 | status = acpi_ut_copy_ipackage_to_epackage(internal_object, |
404 | ret_buffer->pointer, | |
405 | &ret_buffer->length); | |
406 | } else { | |
1da177e4 LT |
407 | /* |
408 | * Build a simple object (no nested objects) | |
409 | */ | |
4be44fcd | 410 | status = acpi_ut_copy_isimple_to_esimple(internal_object, |
c51a4de8 BM |
411 | ACPI_CAST_PTR(union |
412 | acpi_object, | |
413 | ret_buffer-> | |
414 | pointer), | |
415 | ACPI_ADD_PTR(u8, | |
416 | ret_buffer-> | |
417 | pointer, | |
418 | ACPI_ROUND_UP_TO_NATIVE_WORD | |
419 | (sizeof | |
420 | (union | |
421 | acpi_object))), | |
4be44fcd | 422 | &ret_buffer->length); |
1da177e4 LT |
423 | /* |
424 | * build simple does not include the object size in the length | |
425 | * so we add it in here | |
426 | */ | |
4be44fcd | 427 | ret_buffer->length += sizeof(union acpi_object); |
1da177e4 LT |
428 | } |
429 | ||
4be44fcd | 430 | return_ACPI_STATUS(status); |
1da177e4 LT |
431 | } |
432 | ||
1da177e4 LT |
433 | /******************************************************************************* |
434 | * | |
435 | * FUNCTION: acpi_ut_copy_esimple_to_isimple | |
436 | * | |
44f6c012 RM |
437 | * PARAMETERS: external_object - The external object to be converted |
438 | * ret_internal_object - Where the internal object is returned | |
1da177e4 LT |
439 | * |
440 | * RETURN: Status | |
441 | * | |
442 | * DESCRIPTION: This function copies an external object to an internal one. | |
443 | * NOTE: Pointers can be copied, we don't need to copy data. | |
444 | * (The pointers have to be valid in our address space no matter | |
445 | * what we do with them!) | |
446 | * | |
447 | ******************************************************************************/ | |
448 | ||
44f6c012 | 449 | static acpi_status |
4be44fcd LB |
450 | acpi_ut_copy_esimple_to_isimple(union acpi_object *external_object, |
451 | union acpi_operand_object **ret_internal_object) | |
1da177e4 | 452 | { |
4be44fcd | 453 | union acpi_operand_object *internal_object; |
1da177e4 | 454 | |
b229cf92 | 455 | ACPI_FUNCTION_TRACE(ut_copy_esimple_to_isimple); |
1da177e4 LT |
456 | |
457 | /* | |
458 | * Simple types supported are: String, Buffer, Integer | |
459 | */ | |
460 | switch (external_object->type) { | |
461 | case ACPI_TYPE_STRING: | |
462 | case ACPI_TYPE_BUFFER: | |
463 | case ACPI_TYPE_INTEGER: | |
cd0b2248 | 464 | case ACPI_TYPE_LOCAL_REFERENCE: |
1da177e4 | 465 | |
4be44fcd LB |
466 | internal_object = acpi_ut_create_internal_object((u8) |
467 | external_object-> | |
468 | type); | |
1da177e4 | 469 | if (!internal_object) { |
4be44fcd | 470 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
471 | } |
472 | break; | |
473 | ||
cd0b2248 BM |
474 | case ACPI_TYPE_ANY: /* This is the case for a NULL object */ |
475 | ||
476 | *ret_internal_object = NULL; | |
477 | return_ACPI_STATUS(AE_OK); | |
478 | ||
1da177e4 LT |
479 | default: |
480 | /* All other types are not supported */ | |
481 | ||
b1dd9096 BM |
482 | ACPI_ERROR((AE_INFO, |
483 | "Unsupported object type, cannot convert to internal object: %s", | |
484 | acpi_ut_get_type_name(external_object->type))); | |
485 | ||
4be44fcd | 486 | return_ACPI_STATUS(AE_SUPPORT); |
1da177e4 LT |
487 | } |
488 | ||
1da177e4 LT |
489 | /* Must COPY string and buffer contents */ |
490 | ||
491 | switch (external_object->type) { | |
492 | case ACPI_TYPE_STRING: | |
493 | ||
494 | internal_object->string.pointer = | |
8313524a BM |
495 | ACPI_ALLOCATE_ZEROED((acpi_size) external_object->string. |
496 | length + 1); | |
1da177e4 LT |
497 | if (!internal_object->string.pointer) { |
498 | goto error_exit; | |
499 | } | |
500 | ||
4be44fcd LB |
501 | ACPI_MEMCPY(internal_object->string.pointer, |
502 | external_object->string.pointer, | |
503 | external_object->string.length); | |
1da177e4 LT |
504 | |
505 | internal_object->string.length = external_object->string.length; | |
506 | break; | |
507 | ||
1da177e4 LT |
508 | case ACPI_TYPE_BUFFER: |
509 | ||
510 | internal_object->buffer.pointer = | |
8313524a | 511 | ACPI_ALLOCATE_ZEROED(external_object->buffer.length); |
1da177e4 LT |
512 | if (!internal_object->buffer.pointer) { |
513 | goto error_exit; | |
514 | } | |
515 | ||
4be44fcd LB |
516 | ACPI_MEMCPY(internal_object->buffer.pointer, |
517 | external_object->buffer.pointer, | |
518 | external_object->buffer.length); | |
1da177e4 LT |
519 | |
520 | internal_object->buffer.length = external_object->buffer.length; | |
24a3157a BM |
521 | |
522 | /* Mark buffer data valid */ | |
523 | ||
524 | internal_object->buffer.flags |= AOPOBJ_DATA_VALID; | |
1da177e4 LT |
525 | break; |
526 | ||
1da177e4 LT |
527 | case ACPI_TYPE_INTEGER: |
528 | ||
4be44fcd | 529 | internal_object->integer.value = external_object->integer.value; |
1da177e4 LT |
530 | break; |
531 | ||
cd0b2248 BM |
532 | case ACPI_TYPE_LOCAL_REFERENCE: |
533 | ||
534 | /* TBD: should validate incoming handle */ | |
535 | ||
536 | internal_object->reference.opcode = AML_INT_NAMEPATH_OP; | |
537 | internal_object->reference.node = | |
538 | external_object->reference.handle; | |
539 | break; | |
540 | ||
1da177e4 LT |
541 | default: |
542 | /* Other types can't get here */ | |
543 | break; | |
544 | } | |
545 | ||
546 | *ret_internal_object = internal_object; | |
4be44fcd | 547 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 548 | |
4be44fcd LB |
549 | error_exit: |
550 | acpi_ut_remove_reference(internal_object); | |
551 | return_ACPI_STATUS(AE_NO_MEMORY); | |
1da177e4 LT |
552 | } |
553 | ||
1da177e4 LT |
554 | /******************************************************************************* |
555 | * | |
556 | * FUNCTION: acpi_ut_copy_epackage_to_ipackage | |
557 | * | |
6287ee32 BM |
558 | * PARAMETERS: external_object - The external object to be converted |
559 | * internal_object - Where the internal object is returned | |
1da177e4 LT |
560 | * |
561 | * RETURN: Status | |
562 | * | |
6287ee32 BM |
563 | * DESCRIPTION: Copy an external package object to an internal package. |
564 | * Handles nested packages. | |
1da177e4 LT |
565 | * |
566 | ******************************************************************************/ | |
567 | ||
568 | static acpi_status | |
6287ee32 BM |
569 | acpi_ut_copy_epackage_to_ipackage(union acpi_object *external_object, |
570 | union acpi_operand_object **internal_object) | |
1da177e4 | 571 | { |
6287ee32 BM |
572 | acpi_status status = AE_OK; |
573 | union acpi_operand_object *package_object; | |
574 | union acpi_operand_object **package_elements; | |
575 | acpi_native_uint i; | |
1da177e4 | 576 | |
b229cf92 | 577 | ACPI_FUNCTION_TRACE(ut_copy_epackage_to_ipackage); |
1da177e4 | 578 | |
6287ee32 | 579 | /* Create the package object */ |
1da177e4 | 580 | |
6287ee32 BM |
581 | package_object = |
582 | acpi_ut_create_package_object(external_object->package.count); | |
583 | if (!package_object) { | |
584 | return_ACPI_STATUS(AE_NO_MEMORY); | |
585 | } | |
1da177e4 | 586 | |
6287ee32 | 587 | package_elements = package_object->package.elements; |
1da177e4 LT |
588 | |
589 | /* | |
6287ee32 BM |
590 | * Recursive implementation. Probably ok, since nested external packages |
591 | * as parameters should be very rare. | |
1da177e4 | 592 | */ |
6287ee32 BM |
593 | for (i = 0; i < external_object->package.count; i++) { |
594 | status = | |
595 | acpi_ut_copy_eobject_to_iobject(&external_object->package. | |
596 | elements[i], | |
597 | &package_elements[i]); | |
598 | if (ACPI_FAILURE(status)) { | |
1da177e4 | 599 | |
6287ee32 | 600 | /* Truncate package and delete it */ |
1da177e4 | 601 | |
1d18c058 | 602 | package_object->package.count = (u32) i; |
6287ee32 BM |
603 | package_elements[i] = NULL; |
604 | acpi_ut_remove_reference(package_object); | |
605 | return_ACPI_STATUS(status); | |
606 | } | |
607 | } | |
1da177e4 | 608 | |
24a3157a BM |
609 | /* Mark package data valid */ |
610 | ||
611 | package_object->package.flags |= AOPOBJ_DATA_VALID; | |
612 | ||
6287ee32 BM |
613 | *internal_object = package_object; |
614 | return_ACPI_STATUS(status); | |
615 | } | |
1da177e4 LT |
616 | |
617 | /******************************************************************************* | |
618 | * | |
619 | * FUNCTION: acpi_ut_copy_eobject_to_iobject | |
620 | * | |
6287ee32 BM |
621 | * PARAMETERS: external_object - The external object to be converted |
622 | * internal_object - Where the internal object is returned | |
1da177e4 | 623 | * |
6287ee32 | 624 | * RETURN: Status - the status of the call |
1da177e4 LT |
625 | * |
626 | * DESCRIPTION: Converts an external object to an internal object. | |
627 | * | |
628 | ******************************************************************************/ | |
629 | ||
630 | acpi_status | |
4be44fcd LB |
631 | acpi_ut_copy_eobject_to_iobject(union acpi_object *external_object, |
632 | union acpi_operand_object **internal_object) | |
1da177e4 | 633 | { |
4be44fcd | 634 | acpi_status status; |
1da177e4 | 635 | |
b229cf92 | 636 | ACPI_FUNCTION_TRACE(ut_copy_eobject_to_iobject); |
1da177e4 LT |
637 | |
638 | if (external_object->type == ACPI_TYPE_PACKAGE) { | |
6287ee32 BM |
639 | status = |
640 | acpi_ut_copy_epackage_to_ipackage(external_object, | |
641 | internal_object); | |
642 | } else { | |
1da177e4 LT |
643 | /* |
644 | * Build a simple object (no nested objects) | |
645 | */ | |
4be44fcd LB |
646 | status = |
647 | acpi_ut_copy_esimple_to_isimple(external_object, | |
648 | internal_object); | |
1da177e4 LT |
649 | } |
650 | ||
4be44fcd | 651 | return_ACPI_STATUS(status); |
1da177e4 LT |
652 | } |
653 | ||
1da177e4 LT |
654 | /******************************************************************************* |
655 | * | |
656 | * FUNCTION: acpi_ut_copy_simple_object | |
657 | * | |
658 | * PARAMETERS: source_desc - The internal object to be copied | |
659 | * dest_desc - New target object | |
660 | * | |
661 | * RETURN: Status | |
662 | * | |
663 | * DESCRIPTION: Simple copy of one internal object to another. Reference count | |
664 | * of the destination object is preserved. | |
665 | * | |
666 | ******************************************************************************/ | |
667 | ||
44f6c012 | 668 | static acpi_status |
4be44fcd LB |
669 | acpi_ut_copy_simple_object(union acpi_operand_object *source_desc, |
670 | union acpi_operand_object *dest_desc) | |
1da177e4 | 671 | { |
4be44fcd LB |
672 | u16 reference_count; |
673 | union acpi_operand_object *next_object; | |
1da177e4 LT |
674 | |
675 | /* Save fields from destination that we don't want to overwrite */ | |
676 | ||
677 | reference_count = dest_desc->common.reference_count; | |
678 | next_object = dest_desc->common.next_object; | |
679 | ||
4be44fcd | 680 | /* Copy the entire source object over the destination object */ |
1da177e4 | 681 | |
4be44fcd LB |
682 | ACPI_MEMCPY((char *)dest_desc, (char *)source_desc, |
683 | sizeof(union acpi_operand_object)); | |
1da177e4 LT |
684 | |
685 | /* Restore the saved fields */ | |
686 | ||
687 | dest_desc->common.reference_count = reference_count; | |
688 | dest_desc->common.next_object = next_object; | |
689 | ||
6f42ccf2 RM |
690 | /* New object is not static, regardless of source */ |
691 | ||
692 | dest_desc->common.flags &= ~AOPOBJ_STATIC_POINTER; | |
693 | ||
1da177e4 LT |
694 | /* Handle the objects with extra data */ |
695 | ||
4be44fcd | 696 | switch (ACPI_GET_OBJECT_TYPE(dest_desc)) { |
1da177e4 | 697 | case ACPI_TYPE_BUFFER: |
1da177e4 LT |
698 | /* |
699 | * Allocate and copy the actual buffer if and only if: | |
700 | * 1) There is a valid buffer pointer | |
6f42ccf2 | 701 | * 2) The buffer has a length > 0 |
1da177e4 LT |
702 | */ |
703 | if ((source_desc->buffer.pointer) && | |
4be44fcd | 704 | (source_desc->buffer.length)) { |
6f42ccf2 | 705 | dest_desc->buffer.pointer = |
8313524a | 706 | ACPI_ALLOCATE(source_desc->buffer.length); |
6f42ccf2 RM |
707 | if (!dest_desc->buffer.pointer) { |
708 | return (AE_NO_MEMORY); | |
709 | } | |
1da177e4 | 710 | |
6f42ccf2 | 711 | /* Copy the actual buffer data */ |
1da177e4 | 712 | |
4be44fcd LB |
713 | ACPI_MEMCPY(dest_desc->buffer.pointer, |
714 | source_desc->buffer.pointer, | |
715 | source_desc->buffer.length); | |
1da177e4 LT |
716 | } |
717 | break; | |
718 | ||
719 | case ACPI_TYPE_STRING: | |
1da177e4 LT |
720 | /* |
721 | * Allocate and copy the actual string if and only if: | |
722 | * 1) There is a valid string pointer | |
6f42ccf2 | 723 | * (Pointer to a NULL string is allowed) |
1da177e4 | 724 | */ |
6f42ccf2 | 725 | if (source_desc->string.pointer) { |
1da177e4 | 726 | dest_desc->string.pointer = |
8313524a BM |
727 | ACPI_ALLOCATE((acpi_size) source_desc->string. |
728 | length + 1); | |
1da177e4 LT |
729 | if (!dest_desc->string.pointer) { |
730 | return (AE_NO_MEMORY); | |
731 | } | |
732 | ||
6f42ccf2 RM |
733 | /* Copy the actual string data */ |
734 | ||
4be44fcd LB |
735 | ACPI_MEMCPY(dest_desc->string.pointer, |
736 | source_desc->string.pointer, | |
737 | (acpi_size) source_desc->string.length + 1); | |
1da177e4 LT |
738 | } |
739 | break; | |
740 | ||
741 | case ACPI_TYPE_LOCAL_REFERENCE: | |
742 | /* | |
743 | * We copied the reference object, so we now must add a reference | |
744 | * to the object pointed to by the reference | |
bc7a36ab LM |
745 | * |
746 | * DDBHandle reference (from Load/load_table is a special reference, | |
747 | * it's Reference.Object is the table index, so does not need to | |
748 | * increase the reference count | |
1da177e4 | 749 | */ |
bc7a36ab LM |
750 | if (source_desc->reference.opcode == AML_LOAD_OP) { |
751 | break; | |
752 | } | |
753 | ||
4be44fcd | 754 | acpi_ut_add_reference(source_desc->reference.object); |
1da177e4 LT |
755 | break; |
756 | ||
6b366e2f FS |
757 | case ACPI_TYPE_REGION: |
758 | /* | |
759 | * We copied the Region Handler, so we now must add a reference | |
760 | */ | |
761 | if (dest_desc->region.handler) { | |
762 | acpi_ut_add_reference(dest_desc->region.handler); | |
763 | } | |
764 | break; | |
765 | ||
1da177e4 LT |
766 | default: |
767 | /* Nothing to do for other simple objects */ | |
768 | break; | |
769 | } | |
770 | ||
771 | return (AE_OK); | |
772 | } | |
773 | ||
1da177e4 LT |
774 | /******************************************************************************* |
775 | * | |
776 | * FUNCTION: acpi_ut_copy_ielement_to_ielement | |
777 | * | |
778 | * PARAMETERS: acpi_pkg_callback | |
779 | * | |
780 | * RETURN: Status | |
781 | * | |
782 | * DESCRIPTION: Copy one package element to another package element | |
783 | * | |
784 | ******************************************************************************/ | |
785 | ||
44f6c012 | 786 | static acpi_status |
4be44fcd LB |
787 | acpi_ut_copy_ielement_to_ielement(u8 object_type, |
788 | union acpi_operand_object *source_object, | |
789 | union acpi_generic_state *state, | |
790 | void *context) | |
1da177e4 | 791 | { |
4be44fcd LB |
792 | acpi_status status = AE_OK; |
793 | u32 this_index; | |
794 | union acpi_operand_object **this_target_ptr; | |
795 | union acpi_operand_object *target_object; | |
1da177e4 | 796 | |
4be44fcd | 797 | ACPI_FUNCTION_ENTRY(); |
1da177e4 | 798 | |
4be44fcd | 799 | this_index = state->pkg.index; |
1da177e4 | 800 | this_target_ptr = (union acpi_operand_object **) |
4be44fcd | 801 | &state->pkg.dest_object->package.elements[this_index]; |
1da177e4 LT |
802 | |
803 | switch (object_type) { | |
804 | case ACPI_COPY_TYPE_SIMPLE: | |
805 | ||
806 | /* A null source object indicates a (legal) null package element */ | |
807 | ||
808 | if (source_object) { | |
809 | /* | |
810 | * This is a simple object, just copy it | |
811 | */ | |
4be44fcd LB |
812 | target_object = |
813 | acpi_ut_create_internal_object(ACPI_GET_OBJECT_TYPE | |
814 | (source_object)); | |
1da177e4 LT |
815 | if (!target_object) { |
816 | return (AE_NO_MEMORY); | |
817 | } | |
818 | ||
4be44fcd LB |
819 | status = |
820 | acpi_ut_copy_simple_object(source_object, | |
821 | target_object); | |
822 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
823 | goto error_exit; |
824 | } | |
825 | ||
826 | *this_target_ptr = target_object; | |
4be44fcd | 827 | } else { |
1da177e4 LT |
828 | /* Pass through a null element */ |
829 | ||
830 | *this_target_ptr = NULL; | |
831 | } | |
832 | break; | |
833 | ||
1da177e4 LT |
834 | case ACPI_COPY_TYPE_PACKAGE: |
835 | ||
836 | /* | |
837 | * This object is a package - go down another nesting level | |
838 | * Create and build the package object | |
839 | */ | |
4be44fcd | 840 | target_object = |
6287ee32 | 841 | acpi_ut_create_package_object(source_object->package.count); |
1da177e4 LT |
842 | if (!target_object) { |
843 | return (AE_NO_MEMORY); | |
844 | } | |
845 | ||
1da177e4 LT |
846 | target_object->common.flags = source_object->common.flags; |
847 | ||
6287ee32 | 848 | /* Pass the new package object back to the package walk routine */ |
1da177e4 | 849 | |
1da177e4 LT |
850 | state->pkg.this_target_obj = target_object; |
851 | ||
6287ee32 BM |
852 | /* Store the object pointer in the parent package object */ |
853 | ||
1da177e4 LT |
854 | *this_target_ptr = target_object; |
855 | break; | |
856 | ||
1da177e4 LT |
857 | default: |
858 | return (AE_BAD_PARAMETER); | |
859 | } | |
860 | ||
861 | return (status); | |
862 | ||
4be44fcd LB |
863 | error_exit: |
864 | acpi_ut_remove_reference(target_object); | |
1da177e4 LT |
865 | return (status); |
866 | } | |
867 | ||
1da177e4 LT |
868 | /******************************************************************************* |
869 | * | |
870 | * FUNCTION: acpi_ut_copy_ipackage_to_ipackage | |
871 | * | |
872 | * PARAMETERS: *source_obj - Pointer to the source package object | |
873 | * *dest_obj - Where the internal object is returned | |
874 | * | |
875 | * RETURN: Status - the status of the call | |
876 | * | |
877 | * DESCRIPTION: This function is called to copy an internal package object | |
878 | * into another internal package object. | |
879 | * | |
880 | ******************************************************************************/ | |
881 | ||
44f6c012 | 882 | static acpi_status |
4be44fcd LB |
883 | acpi_ut_copy_ipackage_to_ipackage(union acpi_operand_object *source_obj, |
884 | union acpi_operand_object *dest_obj, | |
885 | struct acpi_walk_state *walk_state) | |
1da177e4 | 886 | { |
4be44fcd | 887 | acpi_status status = AE_OK; |
1da177e4 | 888 | |
b229cf92 | 889 | ACPI_FUNCTION_TRACE(ut_copy_ipackage_to_ipackage); |
1da177e4 | 890 | |
4be44fcd LB |
891 | dest_obj->common.type = ACPI_GET_OBJECT_TYPE(source_obj); |
892 | dest_obj->common.flags = source_obj->common.flags; | |
1da177e4 LT |
893 | dest_obj->package.count = source_obj->package.count; |
894 | ||
895 | /* | |
896 | * Create the object array and walk the source package tree | |
897 | */ | |
8313524a BM |
898 | dest_obj->package.elements = ACPI_ALLOCATE_ZEROED(((acpi_size) |
899 | source_obj->package. | |
900 | count + | |
901 | 1) * sizeof(void *)); | |
1da177e4 | 902 | if (!dest_obj->package.elements) { |
b8e4d893 | 903 | ACPI_ERROR((AE_INFO, "Package allocation failure")); |
4be44fcd | 904 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
905 | } |
906 | ||
907 | /* | |
908 | * Copy the package element-by-element by walking the package "tree". | |
909 | * This handles nested packages of arbitrary depth. | |
910 | */ | |
4be44fcd LB |
911 | status = acpi_ut_walk_package_tree(source_obj, dest_obj, |
912 | acpi_ut_copy_ielement_to_ielement, | |
913 | walk_state); | |
914 | if (ACPI_FAILURE(status)) { | |
52fc0b02 | 915 | |
1da177e4 LT |
916 | /* On failure, delete the destination package object */ |
917 | ||
4be44fcd | 918 | acpi_ut_remove_reference(dest_obj); |
1da177e4 LT |
919 | } |
920 | ||
4be44fcd | 921 | return_ACPI_STATUS(status); |
1da177e4 LT |
922 | } |
923 | ||
1da177e4 LT |
924 | /******************************************************************************* |
925 | * | |
926 | * FUNCTION: acpi_ut_copy_iobject_to_iobject | |
927 | * | |
928 | * PARAMETERS: walk_state - Current walk state | |
929 | * source_desc - The internal object to be copied | |
930 | * dest_desc - Where the copied object is returned | |
931 | * | |
932 | * RETURN: Status | |
933 | * | |
934 | * DESCRIPTION: Copy an internal object to a new internal object | |
935 | * | |
936 | ******************************************************************************/ | |
937 | ||
938 | acpi_status | |
4be44fcd LB |
939 | acpi_ut_copy_iobject_to_iobject(union acpi_operand_object *source_desc, |
940 | union acpi_operand_object **dest_desc, | |
941 | struct acpi_walk_state *walk_state) | |
1da177e4 | 942 | { |
4be44fcd | 943 | acpi_status status = AE_OK; |
1da177e4 | 944 | |
b229cf92 | 945 | ACPI_FUNCTION_TRACE(ut_copy_iobject_to_iobject); |
1da177e4 LT |
946 | |
947 | /* Create the top level object */ | |
948 | ||
4be44fcd LB |
949 | *dest_desc = |
950 | acpi_ut_create_internal_object(ACPI_GET_OBJECT_TYPE(source_desc)); | |
1da177e4 | 951 | if (!*dest_desc) { |
4be44fcd | 952 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
953 | } |
954 | ||
955 | /* Copy the object and possible subobjects */ | |
956 | ||
4be44fcd LB |
957 | if (ACPI_GET_OBJECT_TYPE(source_desc) == ACPI_TYPE_PACKAGE) { |
958 | status = | |
959 | acpi_ut_copy_ipackage_to_ipackage(source_desc, *dest_desc, | |
960 | walk_state); | |
961 | } else { | |
962 | status = acpi_ut_copy_simple_object(source_desc, *dest_desc); | |
1da177e4 LT |
963 | } |
964 | ||
4be44fcd | 965 | return_ACPI_STATUS(status); |
1da177e4 | 966 | } |