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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dsopcode - Dispatcher Op Region support and handling of | |
4 | * "control" opcodes | |
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/acparser.h> | |
48 | #include <acpi/amlcode.h> | |
49 | #include <acpi/acdispat.h> | |
50 | #include <acpi/acinterp.h> | |
51 | #include <acpi/acnamesp.h> | |
52 | #include <acpi/acevents.h> | |
53 | ||
54 | #define _COMPONENT ACPI_DISPATCHER | |
55 | ACPI_MODULE_NAME ("dsopcode") | |
56 | ||
44f6c012 | 57 | /* Local prototypes */ |
1da177e4 | 58 | |
44f6c012 RM |
59 | static acpi_status |
60 | acpi_ds_execute_arguments ( | |
61 | struct acpi_namespace_node *node, | |
62 | struct acpi_namespace_node *scope_node, | |
63 | u32 aml_length, | |
64 | u8 *aml_start); | |
65 | ||
66 | static acpi_status | |
67 | acpi_ds_init_buffer_field ( | |
68 | u16 aml_opcode, | |
69 | union acpi_operand_object *obj_desc, | |
70 | union acpi_operand_object *buffer_desc, | |
71 | union acpi_operand_object *offset_desc, | |
72 | union acpi_operand_object *length_desc, | |
73 | union acpi_operand_object *result_desc); | |
74 | ||
75 | ||
76 | /******************************************************************************* | |
1da177e4 LT |
77 | * |
78 | * FUNCTION: acpi_ds_execute_arguments | |
79 | * | |
44f6c012 RM |
80 | * PARAMETERS: Node - Object NS node |
81 | * scope_node - Parent NS node | |
1da177e4 LT |
82 | * aml_length - Length of executable AML |
83 | * aml_start - Pointer to the AML | |
84 | * | |
85 | * RETURN: Status. | |
86 | * | |
87 | * DESCRIPTION: Late (deferred) execution of region or field arguments | |
88 | * | |
44f6c012 | 89 | ******************************************************************************/ |
1da177e4 | 90 | |
44f6c012 | 91 | static acpi_status |
1da177e4 LT |
92 | acpi_ds_execute_arguments ( |
93 | struct acpi_namespace_node *node, | |
94 | struct acpi_namespace_node *scope_node, | |
95 | u32 aml_length, | |
96 | u8 *aml_start) | |
97 | { | |
98 | acpi_status status; | |
99 | union acpi_parse_object *op; | |
100 | struct acpi_walk_state *walk_state; | |
101 | ||
102 | ||
103 | ACPI_FUNCTION_TRACE ("ds_execute_arguments"); | |
104 | ||
105 | ||
106 | /* | |
107 | * Allocate a new parser op to be the root of the parsed tree | |
108 | */ | |
109 | op = acpi_ps_alloc_op (AML_INT_EVAL_SUBTREE_OP); | |
110 | if (!op) { | |
111 | return_ACPI_STATUS (AE_NO_MEMORY); | |
112 | } | |
113 | ||
114 | /* Save the Node for use in acpi_ps_parse_aml */ | |
115 | ||
116 | op->common.node = scope_node; | |
117 | ||
118 | /* Create and initialize a new parser state */ | |
119 | ||
120 | walk_state = acpi_ds_create_walk_state (0, NULL, NULL, NULL); | |
121 | if (!walk_state) { | |
88ac00f5 RM |
122 | status = AE_NO_MEMORY; |
123 | goto cleanup; | |
1da177e4 LT |
124 | } |
125 | ||
126 | status = acpi_ds_init_aml_walk (walk_state, op, NULL, aml_start, | |
127 | aml_length, NULL, 1); | |
128 | if (ACPI_FAILURE (status)) { | |
129 | acpi_ds_delete_walk_state (walk_state); | |
88ac00f5 | 130 | goto cleanup; |
1da177e4 LT |
131 | } |
132 | ||
133 | /* Mark this parse as a deferred opcode */ | |
134 | ||
135 | walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP; | |
136 | walk_state->deferred_node = node; | |
137 | ||
138 | /* Pass1: Parse the entire declaration */ | |
139 | ||
140 | status = acpi_ps_parse_aml (walk_state); | |
141 | if (ACPI_FAILURE (status)) { | |
88ac00f5 | 142 | goto cleanup; |
1da177e4 LT |
143 | } |
144 | ||
145 | /* Get and init the Op created above */ | |
146 | ||
147 | op->common.node = node; | |
148 | acpi_ps_delete_parse_tree (op); | |
149 | ||
150 | /* Evaluate the deferred arguments */ | |
151 | ||
152 | op = acpi_ps_alloc_op (AML_INT_EVAL_SUBTREE_OP); | |
153 | if (!op) { | |
154 | return_ACPI_STATUS (AE_NO_MEMORY); | |
155 | } | |
156 | ||
157 | op->common.node = scope_node; | |
158 | ||
159 | /* Create and initialize a new parser state */ | |
160 | ||
161 | walk_state = acpi_ds_create_walk_state (0, NULL, NULL, NULL); | |
162 | if (!walk_state) { | |
88ac00f5 RM |
163 | status = AE_NO_MEMORY; |
164 | goto cleanup; | |
1da177e4 LT |
165 | } |
166 | ||
167 | /* Execute the opcode and arguments */ | |
168 | ||
169 | status = acpi_ds_init_aml_walk (walk_state, op, NULL, aml_start, | |
170 | aml_length, NULL, 3); | |
171 | if (ACPI_FAILURE (status)) { | |
172 | acpi_ds_delete_walk_state (walk_state); | |
88ac00f5 | 173 | goto cleanup; |
1da177e4 LT |
174 | } |
175 | ||
176 | /* Mark this execution as a deferred opcode */ | |
177 | ||
178 | walk_state->deferred_node = node; | |
179 | status = acpi_ps_parse_aml (walk_state); | |
88ac00f5 RM |
180 | |
181 | cleanup: | |
1da177e4 LT |
182 | acpi_ps_delete_parse_tree (op); |
183 | return_ACPI_STATUS (status); | |
184 | } | |
185 | ||
186 | ||
44f6c012 | 187 | /******************************************************************************* |
1da177e4 LT |
188 | * |
189 | * FUNCTION: acpi_ds_get_buffer_field_arguments | |
190 | * | |
191 | * PARAMETERS: obj_desc - A valid buffer_field object | |
192 | * | |
193 | * RETURN: Status. | |
194 | * | |
195 | * DESCRIPTION: Get buffer_field Buffer and Index. This implements the late | |
196 | * evaluation of these field attributes. | |
197 | * | |
44f6c012 | 198 | ******************************************************************************/ |
1da177e4 LT |
199 | |
200 | acpi_status | |
201 | acpi_ds_get_buffer_field_arguments ( | |
202 | union acpi_operand_object *obj_desc) | |
203 | { | |
204 | union acpi_operand_object *extra_desc; | |
205 | struct acpi_namespace_node *node; | |
206 | acpi_status status; | |
207 | ||
208 | ||
209 | ACPI_FUNCTION_TRACE_PTR ("ds_get_buffer_field_arguments", obj_desc); | |
210 | ||
211 | ||
212 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { | |
213 | return_ACPI_STATUS (AE_OK); | |
214 | } | |
215 | ||
216 | /* Get the AML pointer (method object) and buffer_field node */ | |
217 | ||
218 | extra_desc = acpi_ns_get_secondary_object (obj_desc); | |
219 | node = obj_desc->buffer_field.node; | |
220 | ||
221 | ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname (ACPI_TYPE_BUFFER_FIELD, node, NULL)); | |
222 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] buffer_field Arg Init\n", | |
223 | acpi_ut_get_node_name (node))); | |
224 | ||
225 | /* Execute the AML code for the term_arg arguments */ | |
226 | ||
227 | status = acpi_ds_execute_arguments (node, acpi_ns_get_parent_node (node), | |
228 | extra_desc->extra.aml_length, extra_desc->extra.aml_start); | |
229 | return_ACPI_STATUS (status); | |
230 | } | |
231 | ||
232 | ||
44f6c012 | 233 | /******************************************************************************* |
1da177e4 LT |
234 | * |
235 | * FUNCTION: acpi_ds_get_buffer_arguments | |
236 | * | |
237 | * PARAMETERS: obj_desc - A valid Buffer object | |
238 | * | |
239 | * RETURN: Status. | |
240 | * | |
241 | * DESCRIPTION: Get Buffer length and initializer byte list. This implements | |
242 | * the late evaluation of these attributes. | |
243 | * | |
44f6c012 | 244 | ******************************************************************************/ |
1da177e4 LT |
245 | |
246 | acpi_status | |
247 | acpi_ds_get_buffer_arguments ( | |
248 | union acpi_operand_object *obj_desc) | |
249 | { | |
250 | struct acpi_namespace_node *node; | |
251 | acpi_status status; | |
252 | ||
253 | ||
254 | ACPI_FUNCTION_TRACE_PTR ("ds_get_buffer_arguments", obj_desc); | |
255 | ||
256 | ||
257 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { | |
258 | return_ACPI_STATUS (AE_OK); | |
259 | } | |
260 | ||
261 | /* Get the Buffer node */ | |
262 | ||
263 | node = obj_desc->buffer.node; | |
264 | if (!node) { | |
265 | ACPI_REPORT_ERROR (( | |
266 | "No pointer back to NS node in buffer obj %p\n", obj_desc)); | |
267 | return_ACPI_STATUS (AE_AML_INTERNAL); | |
268 | } | |
269 | ||
270 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Buffer Arg Init\n")); | |
271 | ||
272 | /* Execute the AML code for the term_arg arguments */ | |
273 | ||
274 | status = acpi_ds_execute_arguments (node, node, | |
275 | obj_desc->buffer.aml_length, obj_desc->buffer.aml_start); | |
276 | return_ACPI_STATUS (status); | |
277 | } | |
278 | ||
279 | ||
44f6c012 | 280 | /******************************************************************************* |
1da177e4 LT |
281 | * |
282 | * FUNCTION: acpi_ds_get_package_arguments | |
283 | * | |
284 | * PARAMETERS: obj_desc - A valid Package object | |
285 | * | |
286 | * RETURN: Status. | |
287 | * | |
288 | * DESCRIPTION: Get Package length and initializer byte list. This implements | |
289 | * the late evaluation of these attributes. | |
290 | * | |
44f6c012 | 291 | ******************************************************************************/ |
1da177e4 LT |
292 | |
293 | acpi_status | |
294 | acpi_ds_get_package_arguments ( | |
295 | union acpi_operand_object *obj_desc) | |
296 | { | |
297 | struct acpi_namespace_node *node; | |
298 | acpi_status status; | |
299 | ||
300 | ||
301 | ACPI_FUNCTION_TRACE_PTR ("ds_get_package_arguments", obj_desc); | |
302 | ||
303 | ||
304 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { | |
305 | return_ACPI_STATUS (AE_OK); | |
306 | } | |
307 | ||
308 | /* Get the Package node */ | |
309 | ||
310 | node = obj_desc->package.node; | |
311 | if (!node) { | |
312 | ACPI_REPORT_ERROR (( | |
313 | "No pointer back to NS node in package %p\n", obj_desc)); | |
314 | return_ACPI_STATUS (AE_AML_INTERNAL); | |
315 | } | |
316 | ||
317 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Package Arg Init\n")); | |
318 | ||
319 | /* Execute the AML code for the term_arg arguments */ | |
320 | ||
321 | status = acpi_ds_execute_arguments (node, node, | |
322 | obj_desc->package.aml_length, obj_desc->package.aml_start); | |
323 | return_ACPI_STATUS (status); | |
324 | } | |
325 | ||
326 | ||
327 | /***************************************************************************** | |
328 | * | |
329 | * FUNCTION: acpi_ds_get_region_arguments | |
330 | * | |
331 | * PARAMETERS: obj_desc - A valid region object | |
332 | * | |
333 | * RETURN: Status. | |
334 | * | |
335 | * DESCRIPTION: Get region address and length. This implements the late | |
336 | * evaluation of these region attributes. | |
337 | * | |
338 | ****************************************************************************/ | |
339 | ||
340 | acpi_status | |
341 | acpi_ds_get_region_arguments ( | |
342 | union acpi_operand_object *obj_desc) | |
343 | { | |
344 | struct acpi_namespace_node *node; | |
345 | acpi_status status; | |
346 | union acpi_operand_object *extra_desc; | |
347 | ||
348 | ||
349 | ACPI_FUNCTION_TRACE_PTR ("ds_get_region_arguments", obj_desc); | |
350 | ||
351 | ||
352 | if (obj_desc->region.flags & AOPOBJ_DATA_VALID) { | |
353 | return_ACPI_STATUS (AE_OK); | |
354 | } | |
355 | ||
356 | extra_desc = acpi_ns_get_secondary_object (obj_desc); | |
357 | if (!extra_desc) { | |
358 | return_ACPI_STATUS (AE_NOT_EXIST); | |
359 | } | |
360 | ||
361 | /* Get the Region node */ | |
362 | ||
363 | node = obj_desc->region.node; | |
364 | ||
365 | ACPI_DEBUG_EXEC (acpi_ut_display_init_pathname (ACPI_TYPE_REGION, node, NULL)); | |
366 | ||
367 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] op_region Arg Init at AML %p\n", | |
368 | acpi_ut_get_node_name (node), extra_desc->extra.aml_start)); | |
369 | ||
370 | /* Execute the argument AML */ | |
371 | ||
372 | status = acpi_ds_execute_arguments (node, acpi_ns_get_parent_node (node), | |
373 | extra_desc->extra.aml_length, extra_desc->extra.aml_start); | |
374 | return_ACPI_STATUS (status); | |
375 | } | |
376 | ||
377 | ||
44f6c012 | 378 | /******************************************************************************* |
1da177e4 LT |
379 | * |
380 | * FUNCTION: acpi_ds_initialize_region | |
381 | * | |
44f6c012 | 382 | * PARAMETERS: obj_handle - Region namespace node |
1da177e4 LT |
383 | * |
384 | * RETURN: Status | |
385 | * | |
386 | * DESCRIPTION: Front end to ev_initialize_region | |
387 | * | |
44f6c012 | 388 | ******************************************************************************/ |
1da177e4 LT |
389 | |
390 | acpi_status | |
391 | acpi_ds_initialize_region ( | |
392 | acpi_handle obj_handle) | |
393 | { | |
394 | union acpi_operand_object *obj_desc; | |
395 | acpi_status status; | |
396 | ||
397 | ||
398 | obj_desc = acpi_ns_get_attached_object (obj_handle); | |
399 | ||
400 | /* Namespace is NOT locked */ | |
401 | ||
402 | status = acpi_ev_initialize_region (obj_desc, FALSE); | |
403 | return (status); | |
404 | } | |
405 | ||
406 | ||
44f6c012 | 407 | /******************************************************************************* |
1da177e4 LT |
408 | * |
409 | * FUNCTION: acpi_ds_init_buffer_field | |
410 | * | |
411 | * PARAMETERS: aml_opcode - create_xxx_field | |
412 | * obj_desc - buffer_field object | |
413 | * buffer_desc - Host Buffer | |
414 | * offset_desc - Offset into buffer | |
44f6c012 RM |
415 | * length_desc - Length of field (CREATE_FIELD_OP only) |
416 | * result_desc - Where to store the result | |
1da177e4 LT |
417 | * |
418 | * RETURN: Status | |
419 | * | |
420 | * DESCRIPTION: Perform actual initialization of a buffer field | |
421 | * | |
44f6c012 | 422 | ******************************************************************************/ |
1da177e4 | 423 | |
44f6c012 | 424 | static acpi_status |
1da177e4 LT |
425 | acpi_ds_init_buffer_field ( |
426 | u16 aml_opcode, | |
427 | union acpi_operand_object *obj_desc, | |
428 | union acpi_operand_object *buffer_desc, | |
429 | union acpi_operand_object *offset_desc, | |
430 | union acpi_operand_object *length_desc, | |
431 | union acpi_operand_object *result_desc) | |
432 | { | |
433 | u32 offset; | |
434 | u32 bit_offset; | |
435 | u32 bit_count; | |
436 | u8 field_flags; | |
437 | acpi_status status; | |
438 | ||
439 | ||
440 | ACPI_FUNCTION_TRACE_PTR ("ds_init_buffer_field", obj_desc); | |
441 | ||
442 | ||
443 | /* Host object must be a Buffer */ | |
444 | ||
445 | if (ACPI_GET_OBJECT_TYPE (buffer_desc) != ACPI_TYPE_BUFFER) { | |
446 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
447 | "Target of Create Field is not a Buffer object - %s\n", | |
448 | acpi_ut_get_object_type_name (buffer_desc))); | |
449 | ||
450 | status = AE_AML_OPERAND_TYPE; | |
451 | goto cleanup; | |
452 | } | |
453 | ||
454 | /* | |
455 | * The last parameter to all of these opcodes (result_desc) started | |
456 | * out as a name_string, and should therefore now be a NS node | |
457 | * after resolution in acpi_ex_resolve_operands(). | |
458 | */ | |
459 | if (ACPI_GET_DESCRIPTOR_TYPE (result_desc) != ACPI_DESC_TYPE_NAMED) { | |
44f6c012 RM |
460 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, |
461 | "(%s) destination not a NS Node [%s]\n", | |
462 | acpi_ps_get_opcode_name (aml_opcode), | |
463 | acpi_ut_get_descriptor_name (result_desc))); | |
1da177e4 LT |
464 | |
465 | status = AE_AML_OPERAND_TYPE; | |
466 | goto cleanup; | |
467 | } | |
468 | ||
469 | offset = (u32) offset_desc->integer.value; | |
470 | ||
471 | /* | |
472 | * Setup the Bit offsets and counts, according to the opcode | |
473 | */ | |
474 | switch (aml_opcode) { | |
475 | case AML_CREATE_FIELD_OP: | |
476 | ||
477 | /* Offset is in bits, count is in bits */ | |
478 | ||
44f6c012 | 479 | field_flags = AML_FIELD_ACCESS_BYTE; |
1da177e4 LT |
480 | bit_offset = offset; |
481 | bit_count = (u32) length_desc->integer.value; | |
44f6c012 RM |
482 | |
483 | /* Must have a valid (>0) bit count */ | |
484 | ||
485 | if (bit_count == 0) { | |
486 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
487 | "Attempt to create_field of length 0\n")); | |
488 | status = AE_AML_OPERAND_VALUE; | |
489 | goto cleanup; | |
490 | } | |
1da177e4 LT |
491 | break; |
492 | ||
493 | case AML_CREATE_BIT_FIELD_OP: | |
494 | ||
495 | /* Offset is in bits, Field is one bit */ | |
496 | ||
497 | bit_offset = offset; | |
498 | bit_count = 1; | |
499 | field_flags = AML_FIELD_ACCESS_BYTE; | |
500 | break; | |
501 | ||
502 | case AML_CREATE_BYTE_FIELD_OP: | |
503 | ||
504 | /* Offset is in bytes, field is one byte */ | |
505 | ||
506 | bit_offset = 8 * offset; | |
507 | bit_count = 8; | |
508 | field_flags = AML_FIELD_ACCESS_BYTE; | |
509 | break; | |
510 | ||
511 | case AML_CREATE_WORD_FIELD_OP: | |
512 | ||
513 | /* Offset is in bytes, field is one word */ | |
514 | ||
515 | bit_offset = 8 * offset; | |
516 | bit_count = 16; | |
517 | field_flags = AML_FIELD_ACCESS_WORD; | |
518 | break; | |
519 | ||
520 | case AML_CREATE_DWORD_FIELD_OP: | |
521 | ||
522 | /* Offset is in bytes, field is one dword */ | |
523 | ||
524 | bit_offset = 8 * offset; | |
525 | bit_count = 32; | |
526 | field_flags = AML_FIELD_ACCESS_DWORD; | |
527 | break; | |
528 | ||
529 | case AML_CREATE_QWORD_FIELD_OP: | |
530 | ||
531 | /* Offset is in bytes, field is one qword */ | |
532 | ||
533 | bit_offset = 8 * offset; | |
534 | bit_count = 64; | |
535 | field_flags = AML_FIELD_ACCESS_QWORD; | |
536 | break; | |
537 | ||
538 | default: | |
539 | ||
540 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
541 | "Unknown field creation opcode %02x\n", | |
542 | aml_opcode)); | |
543 | status = AE_AML_BAD_OPCODE; | |
544 | goto cleanup; | |
545 | } | |
546 | ||
547 | /* Entire field must fit within the current length of the buffer */ | |
548 | ||
549 | if ((bit_offset + bit_count) > | |
550 | (8 * (u32) buffer_desc->buffer.length)) { | |
551 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
552 | "Field [%4.4s] size %d exceeds Buffer [%4.4s] size %d (bits)\n", | |
553 | acpi_ut_get_node_name (result_desc), | |
554 | bit_offset + bit_count, | |
555 | acpi_ut_get_node_name (buffer_desc->buffer.node), | |
556 | 8 * (u32) buffer_desc->buffer.length)); | |
557 | status = AE_AML_BUFFER_LIMIT; | |
558 | goto cleanup; | |
559 | } | |
560 | ||
561 | /* | |
562 | * Initialize areas of the field object that are common to all fields | |
44f6c012 RM |
563 | * For field_flags, use LOCK_RULE = 0 (NO_LOCK), |
564 | * UPDATE_RULE = 0 (UPDATE_PRESERVE) | |
1da177e4 LT |
565 | */ |
566 | status = acpi_ex_prep_common_field_object (obj_desc, field_flags, 0, | |
567 | bit_offset, bit_count); | |
568 | if (ACPI_FAILURE (status)) { | |
569 | goto cleanup; | |
570 | } | |
571 | ||
572 | obj_desc->buffer_field.buffer_obj = buffer_desc; | |
573 | ||
574 | /* Reference count for buffer_desc inherits obj_desc count */ | |
575 | ||
44f6c012 RM |
576 | buffer_desc->common.reference_count = (u16) |
577 | (buffer_desc->common.reference_count + obj_desc->common.reference_count); | |
1da177e4 LT |
578 | |
579 | ||
580 | cleanup: | |
581 | ||
582 | /* Always delete the operands */ | |
583 | ||
584 | acpi_ut_remove_reference (offset_desc); | |
585 | acpi_ut_remove_reference (buffer_desc); | |
586 | ||
587 | if (aml_opcode == AML_CREATE_FIELD_OP) { | |
588 | acpi_ut_remove_reference (length_desc); | |
589 | } | |
590 | ||
591 | /* On failure, delete the result descriptor */ | |
592 | ||
593 | if (ACPI_FAILURE (status)) { | |
594 | acpi_ut_remove_reference (result_desc); /* Result descriptor */ | |
595 | } | |
596 | else { | |
597 | /* Now the address and length are valid for this buffer_field */ | |
598 | ||
599 | obj_desc->buffer_field.flags |= AOPOBJ_DATA_VALID; | |
600 | } | |
601 | ||
602 | return_ACPI_STATUS (status); | |
603 | } | |
604 | ||
605 | ||
44f6c012 | 606 | /******************************************************************************* |
1da177e4 LT |
607 | * |
608 | * FUNCTION: acpi_ds_eval_buffer_field_operands | |
609 | * | |
610 | * PARAMETERS: walk_state - Current walk | |
611 | * Op - A valid buffer_field Op object | |
612 | * | |
613 | * RETURN: Status | |
614 | * | |
615 | * DESCRIPTION: Get buffer_field Buffer and Index | |
616 | * Called from acpi_ds_exec_end_op during buffer_field parse tree walk | |
617 | * | |
44f6c012 | 618 | ******************************************************************************/ |
1da177e4 LT |
619 | |
620 | acpi_status | |
621 | acpi_ds_eval_buffer_field_operands ( | |
622 | struct acpi_walk_state *walk_state, | |
623 | union acpi_parse_object *op) | |
624 | { | |
625 | acpi_status status; | |
626 | union acpi_operand_object *obj_desc; | |
627 | struct acpi_namespace_node *node; | |
628 | union acpi_parse_object *next_op; | |
629 | ||
630 | ||
631 | ACPI_FUNCTION_TRACE_PTR ("ds_eval_buffer_field_operands", op); | |
632 | ||
633 | ||
634 | /* | |
635 | * This is where we evaluate the address and length fields of the | |
636 | * create_xxx_field declaration | |
637 | */ | |
638 | node = op->common.node; | |
639 | ||
640 | /* next_op points to the op that holds the Buffer */ | |
641 | ||
642 | next_op = op->common.value.arg; | |
643 | ||
644 | /* Evaluate/create the address and length operands */ | |
645 | ||
646 | status = acpi_ds_create_operands (walk_state, next_op); | |
647 | if (ACPI_FAILURE (status)) { | |
648 | return_ACPI_STATUS (status); | |
649 | } | |
650 | ||
651 | obj_desc = acpi_ns_get_attached_object (node); | |
652 | if (!obj_desc) { | |
653 | return_ACPI_STATUS (AE_NOT_EXIST); | |
654 | } | |
655 | ||
656 | /* Resolve the operands */ | |
657 | ||
658 | status = acpi_ex_resolve_operands (op->common.aml_opcode, | |
659 | ACPI_WALK_OPERANDS, walk_state); | |
660 | ||
661 | ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE, | |
662 | acpi_ps_get_opcode_name (op->common.aml_opcode), | |
663 | walk_state->num_operands, "after acpi_ex_resolve_operands"); | |
664 | ||
665 | if (ACPI_FAILURE (status)) { | |
666 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "(%s) bad operand(s) (%X)\n", | |
667 | acpi_ps_get_opcode_name (op->common.aml_opcode), status)); | |
668 | ||
669 | return_ACPI_STATUS (status); | |
670 | } | |
671 | ||
672 | /* Initialize the Buffer Field */ | |
673 | ||
674 | if (op->common.aml_opcode == AML_CREATE_FIELD_OP) { | |
675 | /* NOTE: Slightly different operands for this opcode */ | |
676 | ||
677 | status = acpi_ds_init_buffer_field (op->common.aml_opcode, obj_desc, | |
678 | walk_state->operands[0], walk_state->operands[1], | |
679 | walk_state->operands[2], walk_state->operands[3]); | |
680 | } | |
681 | else { | |
682 | /* All other, create_xxx_field opcodes */ | |
683 | ||
684 | status = acpi_ds_init_buffer_field (op->common.aml_opcode, obj_desc, | |
685 | walk_state->operands[0], walk_state->operands[1], | |
686 | NULL, walk_state->operands[2]); | |
687 | } | |
688 | ||
689 | return_ACPI_STATUS (status); | |
690 | } | |
691 | ||
692 | ||
44f6c012 | 693 | /******************************************************************************* |
1da177e4 LT |
694 | * |
695 | * FUNCTION: acpi_ds_eval_region_operands | |
696 | * | |
697 | * PARAMETERS: walk_state - Current walk | |
698 | * Op - A valid region Op object | |
699 | * | |
700 | * RETURN: Status | |
701 | * | |
702 | * DESCRIPTION: Get region address and length | |
703 | * Called from acpi_ds_exec_end_op during op_region parse tree walk | |
704 | * | |
44f6c012 | 705 | ******************************************************************************/ |
1da177e4 LT |
706 | |
707 | acpi_status | |
708 | acpi_ds_eval_region_operands ( | |
709 | struct acpi_walk_state *walk_state, | |
710 | union acpi_parse_object *op) | |
711 | { | |
712 | acpi_status status; | |
713 | union acpi_operand_object *obj_desc; | |
714 | union acpi_operand_object *operand_desc; | |
715 | struct acpi_namespace_node *node; | |
716 | union acpi_parse_object *next_op; | |
717 | ||
718 | ||
719 | ACPI_FUNCTION_TRACE_PTR ("ds_eval_region_operands", op); | |
720 | ||
721 | ||
722 | /* | |
44f6c012 RM |
723 | * This is where we evaluate the address and length fields of the |
724 | * op_region declaration | |
1da177e4 LT |
725 | */ |
726 | node = op->common.node; | |
727 | ||
728 | /* next_op points to the op that holds the space_iD */ | |
729 | ||
730 | next_op = op->common.value.arg; | |
731 | ||
732 | /* next_op points to address op */ | |
733 | ||
734 | next_op = next_op->common.next; | |
735 | ||
736 | /* Evaluate/create the address and length operands */ | |
737 | ||
738 | status = acpi_ds_create_operands (walk_state, next_op); | |
739 | if (ACPI_FAILURE (status)) { | |
740 | return_ACPI_STATUS (status); | |
741 | } | |
742 | ||
743 | /* Resolve the length and address operands to numbers */ | |
744 | ||
44f6c012 RM |
745 | status = acpi_ex_resolve_operands (op->common.aml_opcode, |
746 | ACPI_WALK_OPERANDS, walk_state); | |
1da177e4 LT |
747 | if (ACPI_FAILURE (status)) { |
748 | return_ACPI_STATUS (status); | |
749 | } | |
750 | ||
751 | ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE, | |
752 | acpi_ps_get_opcode_name (op->common.aml_opcode), | |
753 | 1, "after acpi_ex_resolve_operands"); | |
754 | ||
755 | obj_desc = acpi_ns_get_attached_object (node); | |
756 | if (!obj_desc) { | |
757 | return_ACPI_STATUS (AE_NOT_EXIST); | |
758 | } | |
759 | ||
760 | /* | |
761 | * Get the length operand and save it | |
762 | * (at Top of stack) | |
763 | */ | |
764 | operand_desc = walk_state->operands[walk_state->num_operands - 1]; | |
765 | ||
766 | obj_desc->region.length = (u32) operand_desc->integer.value; | |
767 | acpi_ut_remove_reference (operand_desc); | |
768 | ||
769 | /* | |
770 | * Get the address and save it | |
771 | * (at top of stack - 1) | |
772 | */ | |
773 | operand_desc = walk_state->operands[walk_state->num_operands - 2]; | |
774 | ||
44f6c012 RM |
775 | obj_desc->region.address = (acpi_physical_address) |
776 | operand_desc->integer.value; | |
1da177e4 LT |
777 | acpi_ut_remove_reference (operand_desc); |
778 | ||
779 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "rgn_obj %p Addr %8.8X%8.8X Len %X\n", | |
780 | obj_desc, | |
781 | ACPI_FORMAT_UINT64 (obj_desc->region.address), | |
782 | obj_desc->region.length)); | |
783 | ||
784 | /* Now the address and length are valid for this opregion */ | |
785 | ||
786 | obj_desc->region.flags |= AOPOBJ_DATA_VALID; | |
787 | ||
788 | return_ACPI_STATUS (status); | |
789 | } | |
790 | ||
791 | ||
44f6c012 | 792 | /******************************************************************************* |
1da177e4 LT |
793 | * |
794 | * FUNCTION: acpi_ds_eval_data_object_operands | |
795 | * | |
796 | * PARAMETERS: walk_state - Current walk | |
797 | * Op - A valid data_object Op object | |
798 | * obj_desc - data_object | |
799 | * | |
800 | * RETURN: Status | |
801 | * | |
802 | * DESCRIPTION: Get the operands and complete the following data object types: | |
803 | * Buffer, Package. | |
804 | * | |
44f6c012 | 805 | ******************************************************************************/ |
1da177e4 LT |
806 | |
807 | acpi_status | |
808 | acpi_ds_eval_data_object_operands ( | |
809 | struct acpi_walk_state *walk_state, | |
810 | union acpi_parse_object *op, | |
811 | union acpi_operand_object *obj_desc) | |
812 | { | |
813 | acpi_status status; | |
814 | union acpi_operand_object *arg_desc; | |
815 | u32 length; | |
816 | ||
817 | ||
818 | ACPI_FUNCTION_TRACE ("ds_eval_data_object_operands"); | |
819 | ||
820 | ||
821 | /* The first operand (for all of these data objects) is the length */ | |
822 | ||
823 | status = acpi_ds_create_operand (walk_state, op->common.value.arg, 1); | |
824 | if (ACPI_FAILURE (status)) { | |
825 | return_ACPI_STATUS (status); | |
826 | } | |
827 | ||
828 | status = acpi_ex_resolve_operands (walk_state->opcode, | |
829 | &(walk_state->operands [walk_state->num_operands -1]), | |
830 | walk_state); | |
831 | if (ACPI_FAILURE (status)) { | |
832 | return_ACPI_STATUS (status); | |
833 | } | |
834 | ||
835 | /* Extract length operand */ | |
836 | ||
837 | arg_desc = walk_state->operands [walk_state->num_operands - 1]; | |
838 | length = (u32) arg_desc->integer.value; | |
839 | ||
840 | /* Cleanup for length operand */ | |
841 | ||
842 | status = acpi_ds_obj_stack_pop (1, walk_state); | |
843 | if (ACPI_FAILURE (status)) { | |
844 | return_ACPI_STATUS (status); | |
845 | } | |
846 | ||
847 | acpi_ut_remove_reference (arg_desc); | |
848 | ||
849 | /* | |
850 | * Create the actual data object | |
851 | */ | |
852 | switch (op->common.aml_opcode) { | |
853 | case AML_BUFFER_OP: | |
854 | ||
855 | status = acpi_ds_build_internal_buffer_obj (walk_state, op, length, &obj_desc); | |
856 | break; | |
857 | ||
858 | case AML_PACKAGE_OP: | |
859 | case AML_VAR_PACKAGE_OP: | |
860 | ||
861 | status = acpi_ds_build_internal_package_obj (walk_state, op, length, &obj_desc); | |
862 | break; | |
863 | ||
864 | default: | |
865 | return_ACPI_STATUS (AE_AML_BAD_OPCODE); | |
866 | } | |
867 | ||
868 | if (ACPI_SUCCESS (status)) { | |
869 | /* | |
44f6c012 | 870 | * Return the object in the walk_state, unless the parent is a package - |
1da177e4 LT |
871 | * in this case, the return object will be stored in the parse tree |
872 | * for the package. | |
873 | */ | |
874 | if ((!op->common.parent) || | |
875 | ((op->common.parent->common.aml_opcode != AML_PACKAGE_OP) && | |
876 | (op->common.parent->common.aml_opcode != AML_VAR_PACKAGE_OP) && | |
877 | (op->common.parent->common.aml_opcode != AML_NAME_OP))) { | |
878 | walk_state->result_obj = obj_desc; | |
879 | } | |
880 | } | |
881 | ||
882 | return_ACPI_STATUS (status); | |
883 | } | |
884 | ||
885 | ||
886 | /******************************************************************************* | |
887 | * | |
888 | * FUNCTION: acpi_ds_exec_begin_control_op | |
889 | * | |
890 | * PARAMETERS: walk_list - The list that owns the walk stack | |
891 | * Op - The control Op | |
892 | * | |
893 | * RETURN: Status | |
894 | * | |
895 | * DESCRIPTION: Handles all control ops encountered during control method | |
896 | * execution. | |
897 | * | |
898 | ******************************************************************************/ | |
899 | ||
900 | acpi_status | |
901 | acpi_ds_exec_begin_control_op ( | |
902 | struct acpi_walk_state *walk_state, | |
903 | union acpi_parse_object *op) | |
904 | { | |
905 | acpi_status status = AE_OK; | |
906 | union acpi_generic_state *control_state; | |
907 | ||
908 | ||
909 | ACPI_FUNCTION_NAME ("ds_exec_begin_control_op"); | |
910 | ||
911 | ||
912 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n", op, | |
913 | op->common.aml_opcode, walk_state)); | |
914 | ||
915 | switch (op->common.aml_opcode) { | |
916 | case AML_IF_OP: | |
917 | case AML_WHILE_OP: | |
918 | ||
919 | /* | |
920 | * IF/WHILE: Create a new control state to manage these | |
921 | * constructs. We need to manage these as a stack, in order | |
922 | * to handle nesting. | |
923 | */ | |
924 | control_state = acpi_ut_create_control_state (); | |
925 | if (!control_state) { | |
926 | status = AE_NO_MEMORY; | |
927 | break; | |
928 | } | |
929 | /* | |
930 | * Save a pointer to the predicate for multiple executions | |
931 | * of a loop | |
932 | */ | |
933 | control_state->control.aml_predicate_start = walk_state->parser_state.aml - 1; | |
934 | control_state->control.package_end = walk_state->parser_state.pkg_end; | |
935 | control_state->control.opcode = op->common.aml_opcode; | |
936 | ||
937 | ||
938 | /* Push the control state on this walk's control stack */ | |
939 | ||
940 | acpi_ut_push_generic_state (&walk_state->control_state, control_state); | |
941 | break; | |
942 | ||
943 | case AML_ELSE_OP: | |
944 | ||
945 | /* Predicate is in the state object */ | |
946 | /* If predicate is true, the IF was executed, ignore ELSE part */ | |
947 | ||
948 | if (walk_state->last_predicate) { | |
949 | status = AE_CTRL_TRUE; | |
950 | } | |
951 | ||
952 | break; | |
953 | ||
954 | case AML_RETURN_OP: | |
955 | ||
956 | break; | |
957 | ||
958 | default: | |
959 | break; | |
960 | } | |
961 | ||
962 | return (status); | |
963 | } | |
964 | ||
965 | ||
966 | /******************************************************************************* | |
967 | * | |
968 | * FUNCTION: acpi_ds_exec_end_control_op | |
969 | * | |
970 | * PARAMETERS: walk_list - The list that owns the walk stack | |
971 | * Op - The control Op | |
972 | * | |
973 | * RETURN: Status | |
974 | * | |
975 | * DESCRIPTION: Handles all control ops encountered during control method | |
976 | * execution. | |
977 | * | |
978 | ******************************************************************************/ | |
979 | ||
980 | acpi_status | |
981 | acpi_ds_exec_end_control_op ( | |
982 | struct acpi_walk_state *walk_state, | |
983 | union acpi_parse_object *op) | |
984 | { | |
985 | acpi_status status = AE_OK; | |
986 | union acpi_generic_state *control_state; | |
987 | ||
988 | ||
989 | ACPI_FUNCTION_NAME ("ds_exec_end_control_op"); | |
990 | ||
991 | ||
992 | switch (op->common.aml_opcode) { | |
993 | case AML_IF_OP: | |
994 | ||
995 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", op)); | |
996 | ||
997 | /* | |
998 | * Save the result of the predicate in case there is an | |
999 | * ELSE to come | |
1000 | */ | |
1001 | walk_state->last_predicate = | |
1002 | (u8) walk_state->control_state->common.value; | |
1003 | ||
1004 | /* | |
1005 | * Pop the control state that was created at the start | |
1006 | * of the IF and free it | |
1007 | */ | |
1008 | control_state = acpi_ut_pop_generic_state (&walk_state->control_state); | |
1009 | acpi_ut_delete_generic_state (control_state); | |
1010 | break; | |
1011 | ||
1012 | ||
1013 | case AML_ELSE_OP: | |
1014 | ||
1015 | break; | |
1016 | ||
1017 | ||
1018 | case AML_WHILE_OP: | |
1019 | ||
1020 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", op)); | |
1021 | ||
1022 | if (walk_state->control_state->common.value) { | |
1023 | /* Predicate was true, go back and evaluate it again! */ | |
1024 | ||
1025 | status = AE_CTRL_PENDING; | |
1026 | } | |
1027 | ||
44f6c012 RM |
1028 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
1029 | "[WHILE_OP] termination! Op=%p\n",op)); | |
1da177e4 LT |
1030 | |
1031 | /* Pop this control state and free it */ | |
1032 | ||
1033 | control_state = acpi_ut_pop_generic_state (&walk_state->control_state); | |
1034 | ||
1035 | walk_state->aml_last_while = control_state->control.aml_predicate_start; | |
1036 | acpi_ut_delete_generic_state (control_state); | |
1037 | break; | |
1038 | ||
1039 | ||
1040 | case AML_RETURN_OP: | |
1041 | ||
1042 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
1043 | "[RETURN_OP] Op=%p Arg=%p\n",op, op->common.value.arg)); | |
1044 | ||
1045 | /* | |
1046 | * One optional operand -- the return value | |
1047 | * It can be either an immediate operand or a result that | |
1048 | * has been bubbled up the tree | |
1049 | */ | |
1050 | if (op->common.value.arg) { | |
1051 | /* Since we have a real Return(), delete any implicit return */ | |
1052 | ||
1053 | acpi_ds_clear_implicit_return (walk_state); | |
1054 | ||
1055 | /* Return statement has an immediate operand */ | |
1056 | ||
1057 | status = acpi_ds_create_operands (walk_state, op->common.value.arg); | |
1058 | if (ACPI_FAILURE (status)) { | |
1059 | return (status); | |
1060 | } | |
1061 | ||
1062 | /* | |
1063 | * If value being returned is a Reference (such as | |
1064 | * an arg or local), resolve it now because it may | |
1065 | * cease to exist at the end of the method. | |
1066 | */ | |
1067 | status = acpi_ex_resolve_to_value (&walk_state->operands [0], walk_state); | |
1068 | if (ACPI_FAILURE (status)) { | |
1069 | return (status); | |
1070 | } | |
1071 | ||
1072 | /* | |
1073 | * Get the return value and save as the last result | |
1074 | * value. This is the only place where walk_state->return_desc | |
1075 | * is set to anything other than zero! | |
1076 | */ | |
1077 | walk_state->return_desc = walk_state->operands[0]; | |
1078 | } | |
1079 | else if ((walk_state->results) && | |
1080 | (walk_state->results->results.num_results > 0)) { | |
1081 | /* Since we have a real Return(), delete any implicit return */ | |
1082 | ||
1083 | acpi_ds_clear_implicit_return (walk_state); | |
1084 | ||
1085 | /* | |
1086 | * The return value has come from a previous calculation. | |
1087 | * | |
1088 | * If value being returned is a Reference (such as | |
1089 | * an arg or local), resolve it now because it may | |
1090 | * cease to exist at the end of the method. | |
1091 | * | |
1092 | * Allow references created by the Index operator to return unchanged. | |
1093 | */ | |
1094 | if ((ACPI_GET_DESCRIPTOR_TYPE (walk_state->results->results.obj_desc[0]) == ACPI_DESC_TYPE_OPERAND) && | |
1095 | (ACPI_GET_OBJECT_TYPE (walk_state->results->results.obj_desc [0]) == ACPI_TYPE_LOCAL_REFERENCE) && | |
1096 | ((walk_state->results->results.obj_desc [0])->reference.opcode != AML_INDEX_OP)) { | |
1097 | status = acpi_ex_resolve_to_value (&walk_state->results->results.obj_desc [0], walk_state); | |
1098 | if (ACPI_FAILURE (status)) { | |
1099 | return (status); | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | walk_state->return_desc = walk_state->results->results.obj_desc [0]; | |
1104 | } | |
1105 | else { | |
1106 | /* No return operand */ | |
1107 | ||
1108 | if (walk_state->num_operands) { | |
1109 | acpi_ut_remove_reference (walk_state->operands [0]); | |
1110 | } | |
1111 | ||
1112 | walk_state->operands [0] = NULL; | |
1113 | walk_state->num_operands = 0; | |
1114 | walk_state->return_desc = NULL; | |
1115 | } | |
1116 | ||
1117 | ||
1118 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
1119 | "Completed RETURN_OP State=%p, ret_val=%p\n", | |
1120 | walk_state, walk_state->return_desc)); | |
1121 | ||
1122 | /* End the control method execution right now */ | |
1123 | ||
1124 | status = AE_CTRL_TERMINATE; | |
1125 | break; | |
1126 | ||
1127 | ||
1128 | case AML_NOOP_OP: | |
1129 | ||
1130 | /* Just do nothing! */ | |
1131 | break; | |
1132 | ||
1133 | ||
1134 | case AML_BREAK_POINT_OP: | |
1135 | ||
1136 | /* Call up to the OS service layer to handle this */ | |
1137 | ||
1138 | status = acpi_os_signal (ACPI_SIGNAL_BREAKPOINT, "Executed AML Breakpoint opcode"); | |
1139 | ||
1140 | /* If and when it returns, all done. */ | |
1141 | ||
1142 | break; | |
1143 | ||
1144 | ||
1145 | case AML_BREAK_OP: | |
1146 | case AML_CONTINUE_OP: /* ACPI 2.0 */ | |
1147 | ||
1148 | ||
1149 | /* Pop and delete control states until we find a while */ | |
1150 | ||
1151 | while (walk_state->control_state && | |
1152 | (walk_state->control_state->control.opcode != AML_WHILE_OP)) { | |
1153 | control_state = acpi_ut_pop_generic_state (&walk_state->control_state); | |
1154 | acpi_ut_delete_generic_state (control_state); | |
1155 | } | |
1156 | ||
1157 | /* No while found? */ | |
1158 | ||
1159 | if (!walk_state->control_state) { | |
1160 | return (AE_AML_NO_WHILE); | |
1161 | } | |
1162 | ||
1163 | /* Was: walk_state->aml_last_while = walk_state->control_state->Control.aml_predicate_start; */ | |
1164 | ||
1165 | walk_state->aml_last_while = walk_state->control_state->control.package_end; | |
1166 | ||
1167 | /* Return status depending on opcode */ | |
1168 | ||
1169 | if (op->common.aml_opcode == AML_BREAK_OP) { | |
1170 | status = AE_CTRL_BREAK; | |
1171 | } | |
1172 | else { | |
1173 | status = AE_CTRL_CONTINUE; | |
1174 | } | |
1175 | break; | |
1176 | ||
1177 | ||
1178 | default: | |
1179 | ||
1180 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown control opcode=%X Op=%p\n", | |
1181 | op->common.aml_opcode, op)); | |
1182 | ||
1183 | status = AE_AML_BAD_OPCODE; | |
1184 | break; | |
1185 | } | |
1186 | ||
1187 | return (status); | |
1188 | } | |
1189 |