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[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / acpi / dispatcher / dswload.c
1 /******************************************************************************
2 *
3 * Module Name: dswload - Dispatcher namespace load callbacks
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2006, R. Byron Moore
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
44 #include <acpi/acpi.h>
45 #include <acpi/acparser.h>
46 #include <acpi/amlcode.h>
47 #include <acpi/acdispat.h>
48 #include <acpi/acinterp.h>
49 #include <acpi/acnamesp.h>
50 #include <acpi/acevents.h>
51
52 #ifdef ACPI_ASL_COMPILER
53 #include <acpi/acdisasm.h>
54 #endif
55
56 #define _COMPONENT ACPI_DISPATCHER
57 ACPI_MODULE_NAME("dswload")
58
59 /*******************************************************************************
60 *
61 * FUNCTION: acpi_ds_init_callbacks
62 *
63 * PARAMETERS: walk_state - Current state of the parse tree walk
64 * pass_number - 1, 2, or 3
65 *
66 * RETURN: Status
67 *
68 * DESCRIPTION: Init walk state callbacks
69 *
70 ******************************************************************************/
71 acpi_status
72 acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number)
73 {
74
75 switch (pass_number) {
76 case 1:
77 walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
78 ACPI_PARSE_DELETE_TREE;
79 walk_state->descending_callback = acpi_ds_load1_begin_op;
80 walk_state->ascending_callback = acpi_ds_load1_end_op;
81 break;
82
83 case 2:
84 walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
85 ACPI_PARSE_DELETE_TREE;
86 walk_state->descending_callback = acpi_ds_load2_begin_op;
87 walk_state->ascending_callback = acpi_ds_load2_end_op;
88 break;
89
90 case 3:
91 #ifndef ACPI_NO_METHOD_EXECUTION
92 walk_state->parse_flags |= ACPI_PARSE_EXECUTE |
93 ACPI_PARSE_DELETE_TREE;
94 walk_state->descending_callback = acpi_ds_exec_begin_op;
95 walk_state->ascending_callback = acpi_ds_exec_end_op;
96 #endif
97 break;
98
99 default:
100 return (AE_BAD_PARAMETER);
101 }
102
103 return (AE_OK);
104 }
105
106 /*******************************************************************************
107 *
108 * FUNCTION: acpi_ds_load1_begin_op
109 *
110 * PARAMETERS: walk_state - Current state of the parse tree walk
111 * out_op - Where to return op if a new one is created
112 *
113 * RETURN: Status
114 *
115 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
116 *
117 ******************************************************************************/
118
119 acpi_status
120 acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
121 union acpi_parse_object ** out_op)
122 {
123 union acpi_parse_object *op;
124 struct acpi_namespace_node *node;
125 acpi_status status;
126 acpi_object_type object_type;
127 char *path;
128 u32 flags;
129
130 ACPI_FUNCTION_TRACE("ds_load1_begin_op");
131
132 op = walk_state->op;
133 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
134 walk_state));
135
136 /* We are only interested in opcodes that have an associated name */
137
138 if (op) {
139 if (!(walk_state->op_info->flags & AML_NAMED)) {
140 *out_op = op;
141 return_ACPI_STATUS(AE_OK);
142 }
143
144 /* Check if this object has already been installed in the namespace */
145
146 if (op->common.node) {
147 *out_op = op;
148 return_ACPI_STATUS(AE_OK);
149 }
150 }
151
152 path = acpi_ps_get_next_namestring(&walk_state->parser_state);
153
154 /* Map the raw opcode into an internal object type */
155
156 object_type = walk_state->op_info->object_type;
157
158 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
159 "State=%p Op=%p [%s]\n", walk_state, op,
160 acpi_ut_get_type_name(object_type)));
161
162 switch (walk_state->opcode) {
163 case AML_SCOPE_OP:
164
165 /*
166 * The target name of the Scope() operator must exist at this point so
167 * that we can actually open the scope to enter new names underneath it.
168 * Allow search-to-root for single namesegs.
169 */
170 status =
171 acpi_ns_lookup(walk_state->scope_info, path, object_type,
172 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
173 walk_state, &(node));
174 #ifdef ACPI_ASL_COMPILER
175 if (status == AE_NOT_FOUND) {
176 /*
177 * Table disassembly:
178 * Target of Scope() not found. Generate an External for it, and
179 * insert the name into the namespace.
180 */
181 acpi_dm_add_to_external_list(path);
182 status =
183 acpi_ns_lookup(walk_state->scope_info, path,
184 object_type, ACPI_IMODE_LOAD_PASS1,
185 ACPI_NS_SEARCH_PARENT, walk_state,
186 &(node));
187 }
188 #endif
189 if (ACPI_FAILURE(status)) {
190 ACPI_REPORT_NSERROR(path, status);
191 return_ACPI_STATUS(status);
192 }
193
194 /*
195 * Check to make sure that the target is
196 * one of the opcodes that actually opens a scope
197 */
198 switch (node->type) {
199 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
200 case ACPI_TYPE_DEVICE:
201 case ACPI_TYPE_POWER:
202 case ACPI_TYPE_PROCESSOR:
203 case ACPI_TYPE_THERMAL:
204
205 /* These are acceptable types */
206 break;
207
208 case ACPI_TYPE_INTEGER:
209 case ACPI_TYPE_STRING:
210 case ACPI_TYPE_BUFFER:
211
212 /*
213 * These types we will allow, but we will change the type. This
214 * enables some existing code of the form:
215 *
216 * Name (DEB, 0)
217 * Scope (DEB) { ... }
218 *
219 * Note: silently change the type here. On the second pass, we will report
220 * a warning
221 */
222
223 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
224 "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n",
225 path,
226 acpi_ut_get_type_name(node->type)));
227
228 node->type = ACPI_TYPE_ANY;
229 walk_state->scope_info->common.value = ACPI_TYPE_ANY;
230 break;
231
232 default:
233
234 /* All other types are an error */
235
236 ACPI_REPORT_ERROR(("Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)\n", acpi_ut_get_type_name(node->type), path));
237
238 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
239 }
240 break;
241
242 default:
243
244 /*
245 * For all other named opcodes, we will enter the name into
246 * the namespace.
247 *
248 * Setup the search flags.
249 * Since we are entering a name into the namespace, we do not want to
250 * enable the search-to-root upsearch.
251 *
252 * There are only two conditions where it is acceptable that the name
253 * already exists:
254 * 1) the Scope() operator can reopen a scoping object that was
255 * previously defined (Scope, Method, Device, etc.)
256 * 2) Whenever we are parsing a deferred opcode (op_region, Buffer,
257 * buffer_field, or Package), the name of the object is already
258 * in the namespace.
259 */
260
261 if (walk_state->deferred_node) {
262 /* This name is already in the namespace, get the node */
263
264 node = walk_state->deferred_node;
265 status = AE_OK;
266 break;
267 }
268
269 /*
270 * If we are executing a method, do not create any namespace objects
271 * during the load phase, only during execution.
272 */
273 if (walk_state->method_node) {
274 node = NULL;
275 status = AE_OK;
276 break;
277 }
278
279 flags = ACPI_NS_NO_UPSEARCH;
280 if ((walk_state->opcode != AML_SCOPE_OP) &&
281 (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) {
282 flags |= ACPI_NS_ERROR_IF_FOUND;
283 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
284 "[%s] Cannot already exist\n",
285 acpi_ut_get_type_name(object_type)));
286 } else {
287 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
288 "[%s] Both Find or Create allowed\n",
289 acpi_ut_get_type_name(object_type)));
290 }
291
292 /*
293 * Enter the named type into the internal namespace. We enter the name
294 * as we go downward in the parse tree. Any necessary subobjects that
295 * involve arguments to the opcode must be created as we go back up the
296 * parse tree later.
297 */
298 status =
299 acpi_ns_lookup(walk_state->scope_info, path, object_type,
300 ACPI_IMODE_LOAD_PASS1, flags, walk_state,
301 &(node));
302 if (ACPI_FAILURE(status)) {
303 ACPI_REPORT_NSERROR(path, status);
304 return_ACPI_STATUS(status);
305 }
306 break;
307 }
308
309 /* Common exit */
310
311 if (!op) {
312 /* Create a new op */
313
314 op = acpi_ps_alloc_op(walk_state->opcode);
315 if (!op) {
316 return_ACPI_STATUS(AE_NO_MEMORY);
317 }
318 }
319
320 /* Initialize the op */
321
322 #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY))
323 op->named.path = ACPI_CAST_PTR(u8, path);
324 #endif
325
326 if (node) {
327 /*
328 * Put the Node in the "op" object that the parser uses, so we
329 * can get it again quickly when this scope is closed
330 */
331 op->common.node = node;
332 op->named.name = node->name.integer;
333 }
334
335 acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state),
336 op);
337 *out_op = op;
338 return_ACPI_STATUS(status);
339 }
340
341 /*******************************************************************************
342 *
343 * FUNCTION: acpi_ds_load1_end_op
344 *
345 * PARAMETERS: walk_state - Current state of the parse tree walk
346 *
347 * RETURN: Status
348 *
349 * DESCRIPTION: Ascending callback used during the loading of the namespace,
350 * both control methods and everything else.
351 *
352 ******************************************************************************/
353
354 acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
355 {
356 union acpi_parse_object *op;
357 acpi_object_type object_type;
358 acpi_status status = AE_OK;
359
360 ACPI_FUNCTION_TRACE("ds_load1_end_op");
361
362 op = walk_state->op;
363 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
364 walk_state));
365
366 /* We are only interested in opcodes that have an associated name */
367
368 if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) {
369 return_ACPI_STATUS(AE_OK);
370 }
371
372 /* Get the object type to determine if we should pop the scope */
373
374 object_type = walk_state->op_info->object_type;
375
376 #ifndef ACPI_NO_METHOD_EXECUTION
377 if (walk_state->op_info->flags & AML_FIELD) {
378 /*
379 * If we are executing a method, do not create any namespace objects
380 * during the load phase, only during execution.
381 */
382 if (!walk_state->method_node) {
383 if (walk_state->opcode == AML_FIELD_OP ||
384 walk_state->opcode == AML_BANK_FIELD_OP ||
385 walk_state->opcode == AML_INDEX_FIELD_OP) {
386 status =
387 acpi_ds_init_field_objects(op, walk_state);
388 }
389 }
390 return_ACPI_STATUS(status);
391 }
392
393 /*
394 * If we are executing a method, do not create any namespace objects
395 * during the load phase, only during execution.
396 */
397 if (!walk_state->method_node) {
398 if (op->common.aml_opcode == AML_REGION_OP) {
399 status =
400 acpi_ex_create_region(op->named.data,
401 op->named.length,
402 (acpi_adr_space_type)
403 ((op->common.value.arg)->
404 common.value.integer),
405 walk_state);
406 if (ACPI_FAILURE(status)) {
407 return_ACPI_STATUS(status);
408 }
409 }
410 }
411 #endif
412
413 if (op->common.aml_opcode == AML_NAME_OP) {
414 /* For Name opcode, get the object type from the argument */
415
416 if (op->common.value.arg) {
417 object_type = (acpi_ps_get_opcode_info((op->common.
418 value.arg)->
419 common.
420 aml_opcode))->
421 object_type;
422
423 /* Set node type if we have a namespace node */
424
425 if (op->common.node) {
426 op->common.node->type = (u8) object_type;
427 }
428 }
429 }
430
431 /*
432 * If we are executing a method, do not create any namespace objects
433 * during the load phase, only during execution.
434 */
435 if (!walk_state->method_node) {
436 if (op->common.aml_opcode == AML_METHOD_OP) {
437 /*
438 * method_op pkg_length name_string method_flags term_list
439 *
440 * Note: We must create the method node/object pair as soon as we
441 * see the method declaration. This allows later pass1 parsing
442 * of invocations of the method (need to know the number of
443 * arguments.)
444 */
445 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
446 "LOADING-Method: State=%p Op=%p named_obj=%p\n",
447 walk_state, op, op->named.node));
448
449 if (!acpi_ns_get_attached_object(op->named.node)) {
450 walk_state->operands[0] =
451 ACPI_CAST_PTR(void, op->named.node);
452 walk_state->num_operands = 1;
453
454 status =
455 acpi_ds_create_operands(walk_state,
456 op->common.value.
457 arg);
458 if (ACPI_SUCCESS(status)) {
459 status =
460 acpi_ex_create_method(op->named.
461 data,
462 op->named.
463 length,
464 walk_state);
465 }
466 walk_state->operands[0] = NULL;
467 walk_state->num_operands = 0;
468
469 if (ACPI_FAILURE(status)) {
470 return_ACPI_STATUS(status);
471 }
472 }
473 }
474 }
475
476 /* Pop the scope stack (only if loading a table) */
477
478 if (!walk_state->method_node && acpi_ns_opens_scope(object_type)) {
479 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
480 "(%s): Popping scope for Op %p\n",
481 acpi_ut_get_type_name(object_type), op));
482
483 status = acpi_ds_scope_stack_pop(walk_state);
484 }
485
486 return_ACPI_STATUS(status);
487 }
488
489 /*******************************************************************************
490 *
491 * FUNCTION: acpi_ds_load2_begin_op
492 *
493 * PARAMETERS: walk_state - Current state of the parse tree walk
494 * out_op - Wher to return op if a new one is created
495 *
496 * RETURN: Status
497 *
498 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
499 *
500 ******************************************************************************/
501
502 acpi_status
503 acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
504 union acpi_parse_object **out_op)
505 {
506 union acpi_parse_object *op;
507 struct acpi_namespace_node *node;
508 acpi_status status;
509 acpi_object_type object_type;
510 char *buffer_ptr;
511
512 ACPI_FUNCTION_TRACE("ds_load2_begin_op");
513
514 op = walk_state->op;
515 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
516 walk_state));
517
518 if (op) {
519 if ((walk_state->control_state) &&
520 (walk_state->control_state->common.state ==
521 ACPI_CONTROL_CONDITIONAL_EXECUTING)) {
522 /* We are executing a while loop outside of a method */
523
524 status = acpi_ds_exec_begin_op(walk_state, out_op);
525 return_ACPI_STATUS(status);
526 }
527
528 /* We only care about Namespace opcodes here */
529
530 if ((!(walk_state->op_info->flags & AML_NSOPCODE) &&
531 (walk_state->opcode != AML_INT_NAMEPATH_OP)) ||
532 (!(walk_state->op_info->flags & AML_NAMED))) {
533 #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE
534 if ((walk_state->op_info->class == AML_CLASS_EXECUTE) ||
535 (walk_state->op_info->class == AML_CLASS_CONTROL)) {
536
537 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
538 "Begin/EXEC: %s (fl %8.8X)\n",
539 walk_state->op_info->name,
540 walk_state->op_info->flags));
541
542 /* Executing a type1 or type2 opcode outside of a method */
543
544 status =
545 acpi_ds_exec_begin_op(walk_state, out_op);
546 return_ACPI_STATUS(status);
547 }
548 #endif
549 return_ACPI_STATUS(AE_OK);
550 }
551
552 /* Get the name we are going to enter or lookup in the namespace */
553
554 if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
555 /* For Namepath op, get the path string */
556
557 buffer_ptr = op->common.value.string;
558 if (!buffer_ptr) {
559 /* No name, just exit */
560
561 return_ACPI_STATUS(AE_OK);
562 }
563 } else {
564 /* Get name from the op */
565
566 buffer_ptr = (char *)&op->named.name;
567 }
568 } else {
569 /* Get the namestring from the raw AML */
570
571 buffer_ptr =
572 acpi_ps_get_next_namestring(&walk_state->parser_state);
573 }
574
575 /* Map the opcode into an internal object type */
576
577 object_type = walk_state->op_info->object_type;
578
579 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
580 "State=%p Op=%p Type=%X\n", walk_state, op,
581 object_type));
582
583 switch (walk_state->opcode) {
584 case AML_FIELD_OP:
585 case AML_BANK_FIELD_OP:
586 case AML_INDEX_FIELD_OP:
587
588 node = NULL;
589 status = AE_OK;
590 break;
591
592 case AML_INT_NAMEPATH_OP:
593
594 /*
595 * The name_path is an object reference to an existing object.
596 * Don't enter the name into the namespace, but look it up
597 * for use later.
598 */
599 status =
600 acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
601 object_type, ACPI_IMODE_EXECUTE,
602 ACPI_NS_SEARCH_PARENT, walk_state, &(node));
603 break;
604
605 case AML_SCOPE_OP:
606
607 /*
608 * The Path is an object reference to an existing object.
609 * Don't enter the name into the namespace, but look it up
610 * for use later.
611 */
612 status =
613 acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
614 object_type, ACPI_IMODE_EXECUTE,
615 ACPI_NS_SEARCH_PARENT, walk_state, &(node));
616 if (ACPI_FAILURE(status)) {
617 #ifdef ACPI_ASL_COMPILER
618 if (status == AE_NOT_FOUND) {
619 status = AE_OK;
620 } else {
621 ACPI_REPORT_NSERROR(buffer_ptr, status);
622 }
623 #else
624 ACPI_REPORT_NSERROR(buffer_ptr, status);
625 #endif
626 return_ACPI_STATUS(status);
627 }
628 /*
629 * We must check to make sure that the target is
630 * one of the opcodes that actually opens a scope
631 */
632 switch (node->type) {
633 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
634 case ACPI_TYPE_DEVICE:
635 case ACPI_TYPE_POWER:
636 case ACPI_TYPE_PROCESSOR:
637 case ACPI_TYPE_THERMAL:
638
639 /* These are acceptable types */
640 break;
641
642 case ACPI_TYPE_INTEGER:
643 case ACPI_TYPE_STRING:
644 case ACPI_TYPE_BUFFER:
645
646 /*
647 * These types we will allow, but we will change the type. This
648 * enables some existing code of the form:
649 *
650 * Name (DEB, 0)
651 * Scope (DEB) { ... }
652 */
653
654 ACPI_REPORT_WARNING(("Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", buffer_ptr, acpi_ut_get_type_name(node->type)));
655
656 node->type = ACPI_TYPE_ANY;
657 walk_state->scope_info->common.value = ACPI_TYPE_ANY;
658 break;
659
660 default:
661
662 /* All other types are an error */
663
664 ACPI_REPORT_ERROR(("Invalid type (%s) for target of Scope operator [%4.4s]\n", acpi_ut_get_type_name(node->type), buffer_ptr));
665
666 return (AE_AML_OPERAND_TYPE);
667 }
668 break;
669
670 default:
671
672 /* All other opcodes */
673
674 if (op && op->common.node) {
675 /* This op/node was previously entered into the namespace */
676
677 node = op->common.node;
678
679 if (acpi_ns_opens_scope(object_type)) {
680 status =
681 acpi_ds_scope_stack_push(node, object_type,
682 walk_state);
683 if (ACPI_FAILURE(status)) {
684 return_ACPI_STATUS(status);
685 }
686
687 }
688 return_ACPI_STATUS(AE_OK);
689 }
690
691 /*
692 * Enter the named type into the internal namespace. We enter the name
693 * as we go downward in the parse tree. Any necessary subobjects that
694 * involve arguments to the opcode must be created as we go back up the
695 * parse tree later.
696 *
697 * Note: Name may already exist if we are executing a deferred opcode.
698 */
699 if (walk_state->deferred_node) {
700 /* This name is already in the namespace, get the node */
701
702 node = walk_state->deferred_node;
703 status = AE_OK;
704 break;
705 }
706
707 /* Add new entry into namespace */
708
709 status =
710 acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
711 object_type, ACPI_IMODE_LOAD_PASS2,
712 ACPI_NS_NO_UPSEARCH, walk_state, &(node));
713 break;
714 }
715
716 if (ACPI_FAILURE(status)) {
717 ACPI_REPORT_NSERROR(buffer_ptr, status);
718 return_ACPI_STATUS(status);
719 }
720
721 if (!op) {
722 /* Create a new op */
723
724 op = acpi_ps_alloc_op(walk_state->opcode);
725 if (!op) {
726 return_ACPI_STATUS(AE_NO_MEMORY);
727 }
728
729 /* Initialize the new op */
730
731 if (node) {
732 op->named.name = node->name.integer;
733 }
734 *out_op = op;
735 }
736
737 /*
738 * Put the Node in the "op" object that the parser uses, so we
739 * can get it again quickly when this scope is closed
740 */
741 op->common.node = node;
742
743 return_ACPI_STATUS(status);
744 }
745
746 /*******************************************************************************
747 *
748 * FUNCTION: acpi_ds_load2_end_op
749 *
750 * PARAMETERS: walk_state - Current state of the parse tree walk
751 *
752 * RETURN: Status
753 *
754 * DESCRIPTION: Ascending callback used during the loading of the namespace,
755 * both control methods and everything else.
756 *
757 ******************************************************************************/
758
759 acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
760 {
761 union acpi_parse_object *op;
762 acpi_status status = AE_OK;
763 acpi_object_type object_type;
764 struct acpi_namespace_node *node;
765 union acpi_parse_object *arg;
766 struct acpi_namespace_node *new_node;
767 #ifndef ACPI_NO_METHOD_EXECUTION
768 u32 i;
769 #endif
770
771 ACPI_FUNCTION_TRACE("ds_load2_end_op");
772
773 op = walk_state->op;
774 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
775 walk_state->op_info->name, op, walk_state));
776
777 /* Check if opcode had an associated namespace object */
778
779 if (!(walk_state->op_info->flags & AML_NSOBJECT)) {
780 #ifndef ACPI_NO_METHOD_EXECUTION
781 #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE
782 /* No namespace object. Executable opcode? */
783
784 if ((walk_state->op_info->class == AML_CLASS_EXECUTE) ||
785 (walk_state->op_info->class == AML_CLASS_CONTROL)) {
786 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
787 "End/EXEC: %s (fl %8.8X)\n",
788 walk_state->op_info->name,
789 walk_state->op_info->flags));
790
791 /* Executing a type1 or type2 opcode outside of a method */
792
793 status = acpi_ds_exec_end_op(walk_state);
794 return_ACPI_STATUS(status);
795 }
796 #endif
797 #endif
798 return_ACPI_STATUS(AE_OK);
799 }
800
801 if (op->common.aml_opcode == AML_SCOPE_OP) {
802 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
803 "Ending scope Op=%p State=%p\n", op,
804 walk_state));
805 }
806
807 object_type = walk_state->op_info->object_type;
808
809 /*
810 * Get the Node/name from the earlier lookup
811 * (It was saved in the *op structure)
812 */
813 node = op->common.node;
814
815 /*
816 * Put the Node on the object stack (Contains the ACPI Name of
817 * this object)
818 */
819 walk_state->operands[0] = (void *)node;
820 walk_state->num_operands = 1;
821
822 /* Pop the scope stack */
823
824 if (acpi_ns_opens_scope(object_type) &&
825 (op->common.aml_opcode != AML_INT_METHODCALL_OP)) {
826 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
827 "(%s) Popping scope for Op %p\n",
828 acpi_ut_get_type_name(object_type), op));
829
830 status = acpi_ds_scope_stack_pop(walk_state);
831 if (ACPI_FAILURE(status)) {
832 goto cleanup;
833 }
834 }
835
836 /*
837 * Named operations are as follows:
838 *
839 * AML_ALIAS
840 * AML_BANKFIELD
841 * AML_CREATEBITFIELD
842 * AML_CREATEBYTEFIELD
843 * AML_CREATEDWORDFIELD
844 * AML_CREATEFIELD
845 * AML_CREATEQWORDFIELD
846 * AML_CREATEWORDFIELD
847 * AML_DATA_REGION
848 * AML_DEVICE
849 * AML_EVENT
850 * AML_FIELD
851 * AML_INDEXFIELD
852 * AML_METHOD
853 * AML_METHODCALL
854 * AML_MUTEX
855 * AML_NAME
856 * AML_NAMEDFIELD
857 * AML_OPREGION
858 * AML_POWERRES
859 * AML_PROCESSOR
860 * AML_SCOPE
861 * AML_THERMALZONE
862 */
863
864 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
865 "Create-Load [%s] State=%p Op=%p named_obj=%p\n",
866 acpi_ps_get_opcode_name(op->common.aml_opcode),
867 walk_state, op, node));
868
869 /* Decode the opcode */
870
871 arg = op->common.value.arg;
872
873 switch (walk_state->op_info->type) {
874 #ifndef ACPI_NO_METHOD_EXECUTION
875
876 case AML_TYPE_CREATE_FIELD:
877
878 /*
879 * Create the field object, but the field buffer and index must
880 * be evaluated later during the execution phase
881 */
882 status = acpi_ds_create_buffer_field(op, walk_state);
883 break;
884
885 case AML_TYPE_NAMED_FIELD:
886
887 /*
888 * If we are executing a method, initialize the field
889 */
890 if (walk_state->method_node) {
891 status = acpi_ds_init_field_objects(op, walk_state);
892 }
893
894 switch (op->common.aml_opcode) {
895 case AML_INDEX_FIELD_OP:
896
897 status =
898 acpi_ds_create_index_field(op,
899 (acpi_handle) arg->
900 common.node, walk_state);
901 break;
902
903 case AML_BANK_FIELD_OP:
904
905 status =
906 acpi_ds_create_bank_field(op, arg->common.node,
907 walk_state);
908 break;
909
910 case AML_FIELD_OP:
911
912 status =
913 acpi_ds_create_field(op, arg->common.node,
914 walk_state);
915 break;
916
917 default:
918 /* All NAMED_FIELD opcodes must be handled above */
919 break;
920 }
921 break;
922
923 case AML_TYPE_NAMED_SIMPLE:
924
925 status = acpi_ds_create_operands(walk_state, arg);
926 if (ACPI_FAILURE(status)) {
927 goto cleanup;
928 }
929
930 switch (op->common.aml_opcode) {
931 case AML_PROCESSOR_OP:
932
933 status = acpi_ex_create_processor(walk_state);
934 break;
935
936 case AML_POWER_RES_OP:
937
938 status = acpi_ex_create_power_resource(walk_state);
939 break;
940
941 case AML_MUTEX_OP:
942
943 status = acpi_ex_create_mutex(walk_state);
944 break;
945
946 case AML_EVENT_OP:
947
948 status = acpi_ex_create_event(walk_state);
949 break;
950
951 case AML_DATA_REGION_OP:
952
953 status = acpi_ex_create_table_region(walk_state);
954 break;
955
956 case AML_ALIAS_OP:
957
958 status = acpi_ex_create_alias(walk_state);
959 break;
960
961 default:
962 /* Unknown opcode */
963
964 status = AE_OK;
965 goto cleanup;
966 }
967
968 /* Delete operands */
969
970 for (i = 1; i < walk_state->num_operands; i++) {
971 acpi_ut_remove_reference(walk_state->operands[i]);
972 walk_state->operands[i] = NULL;
973 }
974
975 break;
976 #endif /* ACPI_NO_METHOD_EXECUTION */
977
978 case AML_TYPE_NAMED_COMPLEX:
979
980 switch (op->common.aml_opcode) {
981 #ifndef ACPI_NO_METHOD_EXECUTION
982 case AML_REGION_OP:
983
984 /*
985 * If we are executing a method, initialize the region
986 */
987 if (walk_state->method_node) {
988 status =
989 acpi_ex_create_region(op->named.data,
990 op->named.length,
991 (acpi_adr_space_type)
992 ((op->common.value.
993 arg)->common.value.
994 integer),
995 walk_state);
996 if (ACPI_FAILURE(status)) {
997 return (status);
998 }
999 }
1000
1001 /*
1002 * The op_region is not fully parsed at this time. Only valid
1003 * argument is the space_id. (We must save the address of the
1004 * AML of the address and length operands)
1005 */
1006 /*
1007 * If we have a valid region, initialize it
1008 * Namespace is NOT locked at this point.
1009 */
1010 status =
1011 acpi_ev_initialize_region
1012 (acpi_ns_get_attached_object(node), FALSE);
1013 if (ACPI_FAILURE(status)) {
1014 /*
1015 * If AE_NOT_EXIST is returned, it is not fatal
1016 * because many regions get created before a handler
1017 * is installed for said region.
1018 */
1019 if (AE_NOT_EXIST == status) {
1020 status = AE_OK;
1021 }
1022 }
1023 break;
1024
1025 case AML_NAME_OP:
1026
1027 status = acpi_ds_create_node(walk_state, node, op);
1028 break;
1029
1030 case AML_METHOD_OP:
1031 /*
1032 * method_op pkg_length name_string method_flags term_list
1033 *
1034 * Note: We must create the method node/object pair as soon as we
1035 * see the method declaration. This allows later pass1 parsing
1036 * of invocations of the method (need to know the number of
1037 * arguments.)
1038 */
1039 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
1040 "LOADING-Method: State=%p Op=%p named_obj=%p\n",
1041 walk_state, op, op->named.node));
1042
1043 if (!acpi_ns_get_attached_object(op->named.node)) {
1044 walk_state->operands[0] =
1045 ACPI_CAST_PTR(void, op->named.node);
1046 walk_state->num_operands = 1;
1047
1048 status =
1049 acpi_ds_create_operands(walk_state,
1050 op->common.value.
1051 arg);
1052 if (ACPI_SUCCESS(status)) {
1053 status =
1054 acpi_ex_create_method(op->named.
1055 data,
1056 op->named.
1057 length,
1058 walk_state);
1059 }
1060 walk_state->operands[0] = NULL;
1061 walk_state->num_operands = 0;
1062
1063 if (ACPI_FAILURE(status)) {
1064 return_ACPI_STATUS(status);
1065 }
1066 }
1067 break;
1068
1069 #endif /* ACPI_NO_METHOD_EXECUTION */
1070
1071 default:
1072 /* All NAMED_COMPLEX opcodes must be handled above */
1073 break;
1074 }
1075 break;
1076
1077 case AML_CLASS_INTERNAL:
1078
1079 /* case AML_INT_NAMEPATH_OP: */
1080 break;
1081
1082 case AML_CLASS_METHOD_CALL:
1083
1084 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
1085 "RESOLVING-method_call: State=%p Op=%p named_obj=%p\n",
1086 walk_state, op, node));
1087
1088 /*
1089 * Lookup the method name and save the Node
1090 */
1091 status =
1092 acpi_ns_lookup(walk_state->scope_info,
1093 arg->common.value.string, ACPI_TYPE_ANY,
1094 ACPI_IMODE_LOAD_PASS2,
1095 ACPI_NS_SEARCH_PARENT |
1096 ACPI_NS_DONT_OPEN_SCOPE, walk_state,
1097 &(new_node));
1098 if (ACPI_SUCCESS(status)) {
1099
1100 /*
1101 * Make sure that what we found is indeed a method
1102 * We didn't search for a method on purpose, to see if the name
1103 * would resolve
1104 */
1105 if (new_node->type != ACPI_TYPE_METHOD) {
1106 status = AE_AML_OPERAND_TYPE;
1107 }
1108
1109 /* We could put the returned object (Node) on the object stack for
1110 * later, but for now, we will put it in the "op" object that the
1111 * parser uses, so we can get it again at the end of this scope
1112 */
1113 op->common.node = new_node;
1114 } else {
1115 ACPI_REPORT_NSERROR(arg->common.value.string, status);
1116 }
1117 break;
1118
1119 default:
1120 break;
1121 }
1122
1123 cleanup:
1124
1125 /* Remove the Node pushed at the very beginning */
1126
1127 walk_state->operands[0] = NULL;
1128 walk_state->num_operands = 0;
1129 return_ACPI_STATUS(status);
1130 }
kernel source for telekom puls (alcatel/mediatek)