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1da177e4 LT |
1 | |
2 | /****************************************************************************** | |
3 | * | |
4 | * Module Name: exstore - AML Interpreter object store support | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
9 | * Copyright (C) 2000 - 2005, R. Byron Moore | |
10 | * All rights reserved. | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * 1. Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions, and the following disclaimer, | |
17 | * without modification. | |
18 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
19 | * substantially similar to the "NO WARRANTY" disclaimer below | |
20 | * ("Disclaimer") and any redistribution must be conditioned upon | |
21 | * including a substantially similar Disclaimer requirement for further | |
22 | * binary redistribution. | |
23 | * 3. Neither the names of the above-listed copyright holders nor the names | |
24 | * of any contributors may be used to endorse or promote products derived | |
25 | * from this software without specific prior written permission. | |
26 | * | |
27 | * Alternatively, this software may be distributed under the terms of the | |
28 | * GNU General Public License ("GPL") version 2 as published by the Free | |
29 | * Software Foundation. | |
30 | * | |
31 | * NO WARRANTY | |
32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
33 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
34 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
35 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
36 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
37 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
38 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
41 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
42 | * POSSIBILITY OF SUCH DAMAGES. | |
43 | */ | |
44 | ||
45 | ||
46 | #include <acpi/acpi.h> | |
47 | #include <acpi/acdispat.h> | |
48 | #include <acpi/acinterp.h> | |
49 | #include <acpi/amlcode.h> | |
50 | #include <acpi/acnamesp.h> | |
44f6c012 | 51 | #include <acpi/acparser.h> |
1da177e4 LT |
52 | |
53 | ||
54 | #define _COMPONENT ACPI_EXECUTER | |
55 | ACPI_MODULE_NAME ("exstore") | |
56 | ||
44f6c012 RM |
57 | /* Local prototypes */ |
58 | ||
59 | static void | |
60 | acpi_ex_do_debug_object ( | |
61 | union acpi_operand_object *source_desc, | |
62 | u32 level, | |
63 | u32 index); | |
64 | ||
65 | static acpi_status | |
66 | acpi_ex_store_object_to_index ( | |
67 | union acpi_operand_object *val_desc, | |
68 | union acpi_operand_object *dest_desc, | |
69 | struct acpi_walk_state *walk_state); | |
70 | ||
71 | ||
72 | /******************************************************************************* | |
73 | * | |
74 | * FUNCTION: acpi_ex_do_debug_object | |
75 | * | |
76 | * PARAMETERS: source_desc - Value to be stored | |
77 | * Level - Indentation level (used for packages) | |
78 | * Index - Current package element, zero if not pkg | |
79 | * | |
80 | * RETURN: None | |
81 | * | |
82 | * DESCRIPTION: Handles stores to the Debug Object. | |
83 | * | |
84 | ******************************************************************************/ | |
85 | ||
86 | static void | |
87 | acpi_ex_do_debug_object ( | |
88 | union acpi_operand_object *source_desc, | |
89 | u32 level, | |
90 | u32 index) | |
91 | { | |
92 | u32 i; | |
93 | ||
94 | ||
95 | ACPI_FUNCTION_TRACE_PTR ("ex_do_debug_object", source_desc); | |
96 | ||
97 | ||
98 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[ACPI Debug] %*s", | |
99 | level, " ")); | |
100 | ||
101 | /* Display index for package output only */ | |
102 | ||
103 | if (index > 0) { | |
104 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, | |
105 | "(%.2u) ", index -1)); | |
106 | } | |
107 | ||
108 | if (!source_desc) { | |
109 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "<Null Object>\n")); | |
110 | return_VOID; | |
111 | } | |
112 | ||
113 | if (ACPI_GET_DESCRIPTOR_TYPE (source_desc) == ACPI_DESC_TYPE_OPERAND) { | |
114 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "%s: ", | |
115 | acpi_ut_get_object_type_name (source_desc))); | |
116 | ||
117 | if (!acpi_ut_valid_internal_object (source_desc)) { | |
118 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, | |
119 | "%p, Invalid Internal Object!\n", source_desc)); | |
120 | return_VOID; | |
121 | } | |
122 | } | |
123 | else if (ACPI_GET_DESCRIPTOR_TYPE (source_desc) == ACPI_DESC_TYPE_NAMED) { | |
124 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "%s: %p\n", | |
125 | acpi_ut_get_type_name (((struct acpi_namespace_node *) source_desc)->type), | |
126 | source_desc)); | |
127 | return_VOID; | |
128 | } | |
129 | else { | |
130 | return_VOID; | |
131 | } | |
132 | ||
133 | switch (ACPI_GET_OBJECT_TYPE (source_desc)) { | |
134 | case ACPI_TYPE_INTEGER: | |
135 | ||
136 | /* Output correct integer width */ | |
137 | ||
138 | if (acpi_gbl_integer_byte_width == 4) { | |
139 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "0x%8.8X\n", | |
140 | (u32) source_desc->integer.value)); | |
141 | } | |
142 | else { | |
143 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "0x%8.8X%8.8X\n", | |
144 | ACPI_FORMAT_UINT64 (source_desc->integer.value))); | |
145 | } | |
146 | break; | |
147 | ||
148 | case ACPI_TYPE_BUFFER: | |
149 | ||
150 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[0x%.2X]", | |
151 | (u32) source_desc->buffer.length)); | |
152 | ACPI_DUMP_BUFFER (source_desc->buffer.pointer, | |
153 | (source_desc->buffer.length < 32) ? source_desc->buffer.length : 32); | |
154 | break; | |
155 | ||
156 | case ACPI_TYPE_STRING: | |
157 | ||
158 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[0x%.2X] \"%s\"\n", | |
159 | source_desc->string.length, source_desc->string.pointer)); | |
160 | break; | |
161 | ||
162 | case ACPI_TYPE_PACKAGE: | |
163 | ||
164 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[0x%.2X Elements]\n", | |
165 | source_desc->package.count)); | |
166 | ||
167 | /* Output the entire contents of the package */ | |
168 | ||
169 | for (i = 0; i < source_desc->package.count; i++) { | |
170 | acpi_ex_do_debug_object (source_desc->package.elements[i], | |
171 | level+4, i+1); | |
172 | } | |
173 | break; | |
174 | ||
175 | case ACPI_TYPE_LOCAL_REFERENCE: | |
176 | ||
177 | if (source_desc->reference.opcode == AML_INDEX_OP) { | |
178 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[%s, 0x%X]\n", | |
179 | acpi_ps_get_opcode_name (source_desc->reference.opcode), | |
180 | source_desc->reference.offset)); | |
181 | } | |
182 | else { | |
183 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[%s]\n", | |
184 | acpi_ps_get_opcode_name (source_desc->reference.opcode))); | |
185 | } | |
186 | ||
187 | ||
188 | if (source_desc->reference.object) { | |
189 | if (ACPI_GET_DESCRIPTOR_TYPE (source_desc->reference.object) == | |
190 | ACPI_DESC_TYPE_NAMED) { | |
191 | acpi_ex_do_debug_object (((struct acpi_namespace_node *) | |
192 | source_desc->reference.object)->object, | |
193 | level+4, 0); | |
194 | } | |
195 | else { | |
196 | acpi_ex_do_debug_object (source_desc->reference.object, level+4, 0); | |
197 | } | |
198 | } | |
199 | else if (source_desc->reference.node) { | |
200 | acpi_ex_do_debug_object ((source_desc->reference.node)->object, | |
201 | level+4, 0); | |
202 | } | |
203 | break; | |
204 | ||
205 | default: | |
206 | ||
207 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "%p %s\n", | |
208 | source_desc, acpi_ut_get_object_type_name (source_desc))); | |
209 | break; | |
210 | } | |
211 | ||
212 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, "\n")); | |
213 | return_VOID; | |
214 | } | |
215 | ||
1da177e4 LT |
216 | |
217 | /******************************************************************************* | |
218 | * | |
219 | * FUNCTION: acpi_ex_store | |
220 | * | |
221 | * PARAMETERS: *source_desc - Value to be stored | |
222 | * *dest_desc - Where to store it. Must be an NS node | |
223 | * or an union acpi_operand_object of type | |
224 | * Reference; | |
225 | * walk_state - Current walk state | |
226 | * | |
227 | * RETURN: Status | |
228 | * | |
229 | * DESCRIPTION: Store the value described by source_desc into the location | |
230 | * described by dest_desc. Called by various interpreter | |
231 | * functions to store the result of an operation into | |
232 | * the destination operand -- not just simply the actual "Store" | |
233 | * ASL operator. | |
234 | * | |
235 | ******************************************************************************/ | |
236 | ||
237 | acpi_status | |
238 | acpi_ex_store ( | |
239 | union acpi_operand_object *source_desc, | |
240 | union acpi_operand_object *dest_desc, | |
241 | struct acpi_walk_state *walk_state) | |
242 | { | |
243 | acpi_status status = AE_OK; | |
244 | union acpi_operand_object *ref_desc = dest_desc; | |
245 | ||
246 | ||
247 | ACPI_FUNCTION_TRACE_PTR ("ex_store", dest_desc); | |
248 | ||
249 | ||
250 | /* Validate parameters */ | |
251 | ||
252 | if (!source_desc || !dest_desc) { | |
253 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null parameter\n")); | |
254 | return_ACPI_STATUS (AE_AML_NO_OPERAND); | |
255 | } | |
256 | ||
257 | /* dest_desc can be either a namespace node or an ACPI object */ | |
258 | ||
259 | if (ACPI_GET_DESCRIPTOR_TYPE (dest_desc) == ACPI_DESC_TYPE_NAMED) { | |
260 | /* | |
261 | * Dest is a namespace node, | |
262 | * Storing an object into a Named node. | |
263 | */ | |
264 | status = acpi_ex_store_object_to_node (source_desc, | |
265 | (struct acpi_namespace_node *) dest_desc, walk_state, | |
266 | ACPI_IMPLICIT_CONVERSION); | |
267 | ||
268 | return_ACPI_STATUS (status); | |
269 | } | |
270 | ||
271 | /* Destination object must be a Reference or a Constant object */ | |
272 | ||
273 | switch (ACPI_GET_OBJECT_TYPE (dest_desc)) { | |
274 | case ACPI_TYPE_LOCAL_REFERENCE: | |
275 | break; | |
276 | ||
277 | case ACPI_TYPE_INTEGER: | |
278 | ||
279 | /* Allow stores to Constants -- a Noop as per ACPI spec */ | |
280 | ||
281 | if (dest_desc->common.flags & AOPOBJ_AML_CONSTANT) { | |
282 | return_ACPI_STATUS (AE_OK); | |
283 | } | |
284 | ||
285 | /*lint -fallthrough */ | |
286 | ||
287 | default: | |
288 | ||
289 | /* Destination is not a Reference object */ | |
290 | ||
291 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
292 | "Target is not a Reference or Constant object - %s [%p]\n", | |
293 | acpi_ut_get_object_type_name (dest_desc), dest_desc)); | |
294 | ||
295 | ACPI_DUMP_STACK_ENTRY (source_desc); | |
296 | ACPI_DUMP_STACK_ENTRY (dest_desc); | |
297 | ACPI_DUMP_OPERANDS (&dest_desc, ACPI_IMODE_EXECUTE, "ex_store", | |
298 | 2, "Target is not a Reference or Constant object"); | |
299 | ||
300 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); | |
301 | } | |
302 | ||
303 | /* | |
304 | * Examine the Reference opcode. These cases are handled: | |
305 | * | |
306 | * 1) Store to Name (Change the object associated with a name) | |
307 | * 2) Store to an indexed area of a Buffer or Package | |
308 | * 3) Store to a Method Local or Arg | |
309 | * 4) Store to the debug object | |
310 | */ | |
311 | switch (ref_desc->reference.opcode) { | |
312 | case AML_NAME_OP: | |
313 | case AML_REF_OF_OP: | |
314 | ||
315 | /* Storing an object into a Name "container" */ | |
316 | ||
44f6c012 RM |
317 | status = acpi_ex_store_object_to_node (source_desc, |
318 | ref_desc->reference.object, | |
319 | walk_state, ACPI_IMPLICIT_CONVERSION); | |
1da177e4 LT |
320 | break; |
321 | ||
322 | ||
323 | case AML_INDEX_OP: | |
324 | ||
325 | /* Storing to an Index (pointer into a packager or buffer) */ | |
326 | ||
327 | status = acpi_ex_store_object_to_index (source_desc, ref_desc, walk_state); | |
328 | break; | |
329 | ||
330 | ||
331 | case AML_LOCAL_OP: | |
332 | case AML_ARG_OP: | |
333 | ||
334 | /* Store to a method local/arg */ | |
335 | ||
336 | status = acpi_ds_store_object_to_local (ref_desc->reference.opcode, | |
44f6c012 | 337 | ref_desc->reference.offset, source_desc, walk_state); |
1da177e4 LT |
338 | break; |
339 | ||
340 | ||
341 | case AML_DEBUG_OP: | |
342 | ||
343 | /* | |
344 | * Storing to the Debug object causes the value stored to be | |
345 | * displayed and otherwise has no effect -- see ACPI Specification | |
346 | */ | |
347 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, | |
348 | "**** Write to Debug Object: Object %p %s ****:\n\n", | |
349 | source_desc, acpi_ut_get_object_type_name (source_desc))); | |
350 | ||
44f6c012 | 351 | acpi_ex_do_debug_object (source_desc, 0, 0); |
1da177e4 LT |
352 | break; |
353 | ||
354 | ||
355 | default: | |
356 | ||
357 | ACPI_REPORT_ERROR (("ex_store: Unknown Reference opcode %X\n", | |
358 | ref_desc->reference.opcode)); | |
359 | ACPI_DUMP_ENTRY (ref_desc, ACPI_LV_ERROR); | |
360 | ||
361 | status = AE_AML_INTERNAL; | |
362 | break; | |
363 | } | |
364 | ||
365 | return_ACPI_STATUS (status); | |
366 | } | |
367 | ||
368 | ||
369 | /******************************************************************************* | |
370 | * | |
371 | * FUNCTION: acpi_ex_store_object_to_index | |
372 | * | |
373 | * PARAMETERS: *source_desc - Value to be stored | |
374 | * *dest_desc - Named object to receive the value | |
375 | * walk_state - Current walk state | |
376 | * | |
377 | * RETURN: Status | |
378 | * | |
379 | * DESCRIPTION: Store the object to indexed Buffer or Package element | |
380 | * | |
381 | ******************************************************************************/ | |
382 | ||
44f6c012 | 383 | static acpi_status |
1da177e4 LT |
384 | acpi_ex_store_object_to_index ( |
385 | union acpi_operand_object *source_desc, | |
386 | union acpi_operand_object *index_desc, | |
387 | struct acpi_walk_state *walk_state) | |
388 | { | |
389 | acpi_status status = AE_OK; | |
390 | union acpi_operand_object *obj_desc; | |
391 | union acpi_operand_object *new_desc; | |
392 | u8 value = 0; | |
393 | u32 i; | |
394 | ||
395 | ||
396 | ACPI_FUNCTION_TRACE ("ex_store_object_to_index"); | |
397 | ||
398 | ||
399 | /* | |
400 | * Destination must be a reference pointer, and | |
401 | * must point to either a buffer or a package | |
402 | */ | |
403 | switch (index_desc->reference.target_type) { | |
404 | case ACPI_TYPE_PACKAGE: | |
405 | /* | |
406 | * Storing to a package element. Copy the object and replace | |
407 | * any existing object with the new object. No implicit | |
408 | * conversion is performed. | |
409 | * | |
410 | * The object at *(index_desc->Reference.Where) is the | |
411 | * element within the package that is to be modified. | |
412 | * The parent package object is at index_desc->Reference.Object | |
413 | */ | |
414 | obj_desc = *(index_desc->reference.where); | |
415 | ||
416 | status = acpi_ut_copy_iobject_to_iobject (source_desc, &new_desc, walk_state); | |
417 | if (ACPI_FAILURE (status)) { | |
418 | return_ACPI_STATUS (status); | |
419 | } | |
420 | ||
421 | if (obj_desc) { | |
422 | /* Decrement reference count by the ref count of the parent package */ | |
423 | ||
44f6c012 RM |
424 | for (i = 0; |
425 | i < ((union acpi_operand_object *) | |
426 | index_desc->reference.object)->common.reference_count; | |
427 | i++) { | |
1da177e4 LT |
428 | acpi_ut_remove_reference (obj_desc); |
429 | } | |
430 | } | |
431 | ||
432 | *(index_desc->reference.where) = new_desc; | |
433 | ||
44f6c012 | 434 | /* Increment ref count by the ref count of the parent package-1 */ |
1da177e4 | 435 | |
44f6c012 RM |
436 | for (i = 1; |
437 | i < ((union acpi_operand_object *) | |
438 | index_desc->reference.object)->common.reference_count; | |
439 | i++) { | |
1da177e4 LT |
440 | acpi_ut_add_reference (new_desc); |
441 | } | |
442 | ||
443 | break; | |
444 | ||
445 | ||
446 | case ACPI_TYPE_BUFFER_FIELD: | |
447 | ||
448 | /* | |
449 | * Store into a Buffer or String (not actually a real buffer_field) | |
450 | * at a location defined by an Index. | |
451 | * | |
452 | * The first 8-bit element of the source object is written to the | |
453 | * 8-bit Buffer location defined by the Index destination object, | |
454 | * according to the ACPI 2.0 specification. | |
455 | */ | |
456 | ||
457 | /* | |
458 | * Make sure the target is a Buffer or String. An error should | |
459 | * not happen here, since the reference_object was constructed | |
460 | * by the INDEX_OP code. | |
461 | */ | |
462 | obj_desc = index_desc->reference.object; | |
463 | if ((ACPI_GET_OBJECT_TYPE (obj_desc) != ACPI_TYPE_BUFFER) && | |
464 | (ACPI_GET_OBJECT_TYPE (obj_desc) != ACPI_TYPE_STRING)) { | |
465 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); | |
466 | } | |
467 | ||
468 | /* | |
469 | * The assignment of the individual elements will be slightly | |
470 | * different for each source type. | |
471 | */ | |
472 | switch (ACPI_GET_OBJECT_TYPE (source_desc)) { | |
473 | case ACPI_TYPE_INTEGER: | |
474 | ||
475 | /* Use the least-significant byte of the integer */ | |
476 | ||
477 | value = (u8) (source_desc->integer.value); | |
478 | break; | |
479 | ||
480 | case ACPI_TYPE_BUFFER: | |
481 | case ACPI_TYPE_STRING: | |
482 | ||
483 | /* Note: Takes advantage of common string/buffer fields */ | |
484 | ||
485 | value = source_desc->buffer.pointer[0]; | |
486 | break; | |
487 | ||
488 | default: | |
489 | ||
490 | /* All other types are invalid */ | |
491 | ||
492 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
493 | "Source must be Integer/Buffer/String type, not %s\n", | |
494 | acpi_ut_get_object_type_name (source_desc))); | |
495 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); | |
496 | } | |
497 | ||
498 | /* Store the source value into the target buffer byte */ | |
499 | ||
500 | obj_desc->buffer.pointer[index_desc->reference.offset] = value; | |
501 | break; | |
502 | ||
503 | ||
504 | default: | |
505 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
506 | "Target is not a Package or buffer_field\n")); | |
507 | status = AE_AML_OPERAND_TYPE; | |
508 | break; | |
509 | } | |
510 | ||
511 | return_ACPI_STATUS (status); | |
512 | } | |
513 | ||
514 | ||
515 | /******************************************************************************* | |
516 | * | |
517 | * FUNCTION: acpi_ex_store_object_to_node | |
518 | * | |
519 | * PARAMETERS: source_desc - Value to be stored | |
520 | * Node - Named object to receive the value | |
521 | * walk_state - Current walk state | |
522 | * implicit_conversion - Perform implicit conversion (yes/no) | |
523 | * | |
524 | * RETURN: Status | |
525 | * | |
526 | * DESCRIPTION: Store the object to the named object. | |
527 | * | |
528 | * The Assignment of an object to a named object is handled here | |
529 | * The value passed in will replace the current value (if any) | |
530 | * with the input value. | |
531 | * | |
532 | * When storing into an object the data is converted to the | |
533 | * target object type then stored in the object. This means | |
534 | * that the target object type (for an initialized target) will | |
535 | * not be changed by a store operation. | |
536 | * | |
537 | * Assumes parameters are already validated. | |
538 | * | |
539 | ******************************************************************************/ | |
540 | ||
541 | acpi_status | |
542 | acpi_ex_store_object_to_node ( | |
543 | union acpi_operand_object *source_desc, | |
544 | struct acpi_namespace_node *node, | |
545 | struct acpi_walk_state *walk_state, | |
546 | u8 implicit_conversion) | |
547 | { | |
548 | acpi_status status = AE_OK; | |
549 | union acpi_operand_object *target_desc; | |
550 | union acpi_operand_object *new_desc; | |
551 | acpi_object_type target_type; | |
552 | ||
553 | ||
554 | ACPI_FUNCTION_TRACE_PTR ("ex_store_object_to_node", source_desc); | |
555 | ||
556 | ||
44f6c012 RM |
557 | /* Get current type of the node, and object attached to Node */ |
558 | ||
1da177e4 LT |
559 | target_type = acpi_ns_get_type (node); |
560 | target_desc = acpi_ns_get_attached_object (node); | |
561 | ||
562 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Storing %p(%s) into node %p(%s)\n", | |
563 | source_desc, acpi_ut_get_object_type_name (source_desc), | |
564 | node, acpi_ut_get_type_name (target_type))); | |
565 | ||
566 | /* | |
567 | * Resolve the source object to an actual value | |
568 | * (If it is a reference object) | |
569 | */ | |
570 | status = acpi_ex_resolve_object (&source_desc, target_type, walk_state); | |
571 | if (ACPI_FAILURE (status)) { | |
572 | return_ACPI_STATUS (status); | |
573 | } | |
574 | ||
575 | /* If no implicit conversion, drop into the default case below */ | |
576 | ||
577 | if (!implicit_conversion) { | |
578 | /* Force execution of default (no implicit conversion) */ | |
579 | ||
580 | target_type = ACPI_TYPE_ANY; | |
581 | } | |
582 | ||
44f6c012 RM |
583 | /* Do the actual store operation */ |
584 | ||
1da177e4 LT |
585 | switch (target_type) { |
586 | case ACPI_TYPE_BUFFER_FIELD: | |
587 | case ACPI_TYPE_LOCAL_REGION_FIELD: | |
588 | case ACPI_TYPE_LOCAL_BANK_FIELD: | |
589 | case ACPI_TYPE_LOCAL_INDEX_FIELD: | |
590 | ||
44f6c012 RM |
591 | /* For fields, copy the source data to the target field. */ |
592 | ||
593 | status = acpi_ex_write_data_to_field (source_desc, target_desc, | |
594 | &walk_state->result_obj); | |
1da177e4 LT |
595 | break; |
596 | ||
597 | ||
598 | case ACPI_TYPE_INTEGER: | |
599 | case ACPI_TYPE_STRING: | |
600 | case ACPI_TYPE_BUFFER: | |
601 | ||
602 | /* | |
603 | * These target types are all of type Integer/String/Buffer, and | |
604 | * therefore support implicit conversion before the store. | |
605 | * | |
606 | * Copy and/or convert the source object to a new target object | |
607 | */ | |
44f6c012 RM |
608 | status = acpi_ex_store_object_to_object (source_desc, target_desc, |
609 | &new_desc, walk_state); | |
1da177e4 LT |
610 | if (ACPI_FAILURE (status)) { |
611 | return_ACPI_STATUS (status); | |
612 | } | |
613 | ||
614 | if (new_desc != target_desc) { | |
615 | /* | |
616 | * Store the new new_desc as the new value of the Name, and set | |
617 | * the Name's type to that of the value being stored in it. | |
618 | * source_desc reference count is incremented by attach_object. | |
619 | * | |
620 | * Note: This may change the type of the node if an explicit store | |
621 | * has been performed such that the node/object type has been | |
622 | * changed. | |
623 | */ | |
624 | status = acpi_ns_attach_object (node, new_desc, new_desc->common.type); | |
625 | ||
626 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, | |
627 | "Store %s into %s via Convert/Attach\n", | |
628 | acpi_ut_get_object_type_name (source_desc), | |
629 | acpi_ut_get_object_type_name (new_desc))); | |
630 | } | |
631 | break; | |
632 | ||
633 | ||
634 | default: | |
635 | ||
636 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, | |
637 | "Storing %s (%p) directly into node (%p), no implicit conversion\n", | |
638 | acpi_ut_get_object_type_name (source_desc), source_desc, node)); | |
639 | ||
640 | /* No conversions for all other types. Just attach the source object */ | |
641 | ||
44f6c012 RM |
642 | status = acpi_ns_attach_object (node, source_desc, |
643 | ACPI_GET_OBJECT_TYPE (source_desc)); | |
1da177e4 LT |
644 | break; |
645 | } | |
646 | ||
647 | return_ACPI_STATUS (status); | |
648 | } | |
649 | ||
650 |