Synchronize up to trunk's revision r57756.
[reactos.git] / drivers / bus / acpi / acpica / dispatcher / dswload2.c
1 /******************************************************************************
2 *
3 * Module Name: dswload2 - Dispatcher second pass namespace load callbacks
4 *
5 *****************************************************************************/
6
7 /******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************/
115
116 #define __DSWLOAD2_C__
117
118 #include "acpi.h"
119 #include "accommon.h"
120 #include "acparser.h"
121 #include "amlcode.h"
122 #include "acdispat.h"
123 #include "acinterp.h"
124 #include "acnamesp.h"
125 #include "acevents.h"
126
127 #define _COMPONENT ACPI_DISPATCHER
128 ACPI_MODULE_NAME ("dswload2")
129
130
131 /*******************************************************************************
132 *
133 * FUNCTION: AcpiDsLoad2BeginOp
134 *
135 * PARAMETERS: WalkState - Current state of the parse tree walk
136 * OutOp - Wher to return op if a new one is created
137 *
138 * RETURN: Status
139 *
140 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
141 *
142 ******************************************************************************/
143
144 ACPI_STATUS
145 AcpiDsLoad2BeginOp (
146 ACPI_WALK_STATE *WalkState,
147 ACPI_PARSE_OBJECT **OutOp)
148 {
149 ACPI_PARSE_OBJECT *Op;
150 ACPI_NAMESPACE_NODE *Node;
151 ACPI_STATUS Status;
152 ACPI_OBJECT_TYPE ObjectType;
153 char *BufferPtr;
154 UINT32 Flags;
155
156
157 ACPI_FUNCTION_TRACE (DsLoad2BeginOp);
158
159
160 Op = WalkState->Op;
161 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
162
163 if (Op)
164 {
165 if ((WalkState->ControlState) &&
166 (WalkState->ControlState->Common.State ==
167 ACPI_CONTROL_CONDITIONAL_EXECUTING))
168 {
169 /* We are executing a while loop outside of a method */
170
171 Status = AcpiDsExecBeginOp (WalkState, OutOp);
172 return_ACPI_STATUS (Status);
173 }
174
175 /* We only care about Namespace opcodes here */
176
177 if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) &&
178 (WalkState->Opcode != AML_INT_NAMEPATH_OP)) ||
179 (!(WalkState->OpInfo->Flags & AML_NAMED)))
180 {
181 return_ACPI_STATUS (AE_OK);
182 }
183
184 /* Get the name we are going to enter or lookup in the namespace */
185
186 if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
187 {
188 /* For Namepath op, get the path string */
189
190 BufferPtr = Op->Common.Value.String;
191 if (!BufferPtr)
192 {
193 /* No name, just exit */
194
195 return_ACPI_STATUS (AE_OK);
196 }
197 }
198 else
199 {
200 /* Get name from the op */
201
202 BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name);
203 }
204 }
205 else
206 {
207 /* Get the namestring from the raw AML */
208
209 BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState);
210 }
211
212 /* Map the opcode into an internal object type */
213
214 ObjectType = WalkState->OpInfo->ObjectType;
215
216 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
217 "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType));
218
219 switch (WalkState->Opcode)
220 {
221 case AML_FIELD_OP:
222 case AML_BANK_FIELD_OP:
223 case AML_INDEX_FIELD_OP:
224
225 Node = NULL;
226 Status = AE_OK;
227 break;
228
229 case AML_INT_NAMEPATH_OP:
230 /*
231 * The NamePath is an object reference to an existing object.
232 * Don't enter the name into the namespace, but look it up
233 * for use later.
234 */
235 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
236 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
237 WalkState, &(Node));
238 break;
239
240 case AML_SCOPE_OP:
241
242 /* Special case for Scope(\) -> refers to the Root node */
243
244 if (Op && (Op->Named.Node == AcpiGbl_RootNode))
245 {
246 Node = Op->Named.Node;
247
248 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
249 if (ACPI_FAILURE (Status))
250 {
251 return_ACPI_STATUS (Status);
252 }
253 }
254 else
255 {
256 /*
257 * The Path is an object reference to an existing object.
258 * Don't enter the name into the namespace, but look it up
259 * for use later.
260 */
261 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
262 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
263 WalkState, &(Node));
264 if (ACPI_FAILURE (Status))
265 {
266 #ifdef ACPI_ASL_COMPILER
267 if (Status == AE_NOT_FOUND)
268 {
269 Status = AE_OK;
270 }
271 else
272 {
273 ACPI_ERROR_NAMESPACE (BufferPtr, Status);
274 }
275 #else
276 ACPI_ERROR_NAMESPACE (BufferPtr, Status);
277 #endif
278 return_ACPI_STATUS (Status);
279 }
280 }
281
282 /*
283 * We must check to make sure that the target is
284 * one of the opcodes that actually opens a scope
285 */
286 switch (Node->Type)
287 {
288 case ACPI_TYPE_ANY:
289 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
290 case ACPI_TYPE_DEVICE:
291 case ACPI_TYPE_POWER:
292 case ACPI_TYPE_PROCESSOR:
293 case ACPI_TYPE_THERMAL:
294
295 /* These are acceptable types */
296 break;
297
298 case ACPI_TYPE_INTEGER:
299 case ACPI_TYPE_STRING:
300 case ACPI_TYPE_BUFFER:
301
302 /*
303 * These types we will allow, but we will change the type.
304 * This enables some existing code of the form:
305 *
306 * Name (DEB, 0)
307 * Scope (DEB) { ... }
308 */
309 ACPI_WARNING ((AE_INFO,
310 "Type override - [%4.4s] had invalid type (%s) "
311 "for Scope operator, changed to type ANY\n",
312 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type)));
313
314 Node->Type = ACPI_TYPE_ANY;
315 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
316 break;
317
318 default:
319
320 /* All other types are an error */
321
322 ACPI_ERROR ((AE_INFO,
323 "Invalid type (%s) for target of "
324 "Scope operator [%4.4s] (Cannot override)",
325 AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node)));
326
327 return (AE_AML_OPERAND_TYPE);
328 }
329 break;
330
331 default:
332
333 /* All other opcodes */
334
335 if (Op && Op->Common.Node)
336 {
337 /* This op/node was previously entered into the namespace */
338
339 Node = Op->Common.Node;
340
341 if (AcpiNsOpensScope (ObjectType))
342 {
343 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
344 if (ACPI_FAILURE (Status))
345 {
346 return_ACPI_STATUS (Status);
347 }
348 }
349
350 return_ACPI_STATUS (AE_OK);
351 }
352
353 /*
354 * Enter the named type into the internal namespace. We enter the name
355 * as we go downward in the parse tree. Any necessary subobjects that
356 * involve arguments to the opcode must be created as we go back up the
357 * parse tree later.
358 *
359 * Note: Name may already exist if we are executing a deferred opcode.
360 */
361 if (WalkState->DeferredNode)
362 {
363 /* This name is already in the namespace, get the node */
364
365 Node = WalkState->DeferredNode;
366 Status = AE_OK;
367 break;
368 }
369
370 Flags = ACPI_NS_NO_UPSEARCH;
371 if (WalkState->PassNumber == ACPI_IMODE_EXECUTE)
372 {
373 /* Execution mode, node cannot already exist, node is temporary */
374
375 Flags |= ACPI_NS_ERROR_IF_FOUND;
376
377 if (!(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
378 {
379 Flags |= ACPI_NS_TEMPORARY;
380 }
381 }
382
383 /* Add new entry or lookup existing entry */
384
385 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
386 ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node);
387
388 if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY))
389 {
390 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
391 "***New Node [%4.4s] %p is temporary\n",
392 AcpiUtGetNodeName (Node), Node));
393 }
394 break;
395 }
396
397 if (ACPI_FAILURE (Status))
398 {
399 ACPI_ERROR_NAMESPACE (BufferPtr, Status);
400 return_ACPI_STATUS (Status);
401 }
402
403 if (!Op)
404 {
405 /* Create a new op */
406
407 Op = AcpiPsAllocOp (WalkState->Opcode);
408 if (!Op)
409 {
410 return_ACPI_STATUS (AE_NO_MEMORY);
411 }
412
413 /* Initialize the new op */
414
415 if (Node)
416 {
417 Op->Named.Name = Node->Name.Integer;
418 }
419 *OutOp = Op;
420 }
421
422 /*
423 * Put the Node in the "op" object that the parser uses, so we
424 * can get it again quickly when this scope is closed
425 */
426 Op->Common.Node = Node;
427 return_ACPI_STATUS (Status);
428 }
429
430
431 /*******************************************************************************
432 *
433 * FUNCTION: AcpiDsLoad2EndOp
434 *
435 * PARAMETERS: WalkState - Current state of the parse tree walk
436 *
437 * RETURN: Status
438 *
439 * DESCRIPTION: Ascending callback used during the loading of the namespace,
440 * both control methods and everything else.
441 *
442 ******************************************************************************/
443
444 ACPI_STATUS
445 AcpiDsLoad2EndOp (
446 ACPI_WALK_STATE *WalkState)
447 {
448 ACPI_PARSE_OBJECT *Op;
449 ACPI_STATUS Status = AE_OK;
450 ACPI_OBJECT_TYPE ObjectType;
451 ACPI_NAMESPACE_NODE *Node;
452 ACPI_PARSE_OBJECT *Arg;
453 ACPI_NAMESPACE_NODE *NewNode;
454 #ifndef ACPI_NO_METHOD_EXECUTION
455 UINT32 i;
456 UINT8 RegionSpace;
457 #endif
458
459
460 ACPI_FUNCTION_TRACE (DsLoad2EndOp);
461
462 Op = WalkState->Op;
463 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
464 WalkState->OpInfo->Name, Op, WalkState));
465
466 /* Check if opcode had an associated namespace object */
467
468 if (!(WalkState->OpInfo->Flags & AML_NSOBJECT))
469 {
470 return_ACPI_STATUS (AE_OK);
471 }
472
473 if (Op->Common.AmlOpcode == AML_SCOPE_OP)
474 {
475 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
476 "Ending scope Op=%p State=%p\n", Op, WalkState));
477 }
478
479 ObjectType = WalkState->OpInfo->ObjectType;
480
481 /*
482 * Get the Node/name from the earlier lookup
483 * (It was saved in the *op structure)
484 */
485 Node = Op->Common.Node;
486
487 /*
488 * Put the Node on the object stack (Contains the ACPI Name of
489 * this object)
490 */
491 WalkState->Operands[0] = (void *) Node;
492 WalkState->NumOperands = 1;
493
494 /* Pop the scope stack */
495
496 if (AcpiNsOpensScope (ObjectType) &&
497 (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP))
498 {
499 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n",
500 AcpiUtGetTypeName (ObjectType), Op));
501
502 Status = AcpiDsScopeStackPop (WalkState);
503 if (ACPI_FAILURE (Status))
504 {
505 goto Cleanup;
506 }
507 }
508
509 /*
510 * Named operations are as follows:
511 *
512 * AML_ALIAS
513 * AML_BANKFIELD
514 * AML_CREATEBITFIELD
515 * AML_CREATEBYTEFIELD
516 * AML_CREATEDWORDFIELD
517 * AML_CREATEFIELD
518 * AML_CREATEQWORDFIELD
519 * AML_CREATEWORDFIELD
520 * AML_DATA_REGION
521 * AML_DEVICE
522 * AML_EVENT
523 * AML_FIELD
524 * AML_INDEXFIELD
525 * AML_METHOD
526 * AML_METHODCALL
527 * AML_MUTEX
528 * AML_NAME
529 * AML_NAMEDFIELD
530 * AML_OPREGION
531 * AML_POWERRES
532 * AML_PROCESSOR
533 * AML_SCOPE
534 * AML_THERMALZONE
535 */
536
537 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
538 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
539 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node));
540
541 /* Decode the opcode */
542
543 Arg = Op->Common.Value.Arg;
544
545 switch (WalkState->OpInfo->Type)
546 {
547 #ifndef ACPI_NO_METHOD_EXECUTION
548
549 case AML_TYPE_CREATE_FIELD:
550 /*
551 * Create the field object, but the field buffer and index must
552 * be evaluated later during the execution phase
553 */
554 Status = AcpiDsCreateBufferField (Op, WalkState);
555 break;
556
557
558 case AML_TYPE_NAMED_FIELD:
559 /*
560 * If we are executing a method, initialize the field
561 */
562 if (WalkState->MethodNode)
563 {
564 Status = AcpiDsInitFieldObjects (Op, WalkState);
565 }
566
567 switch (Op->Common.AmlOpcode)
568 {
569 case AML_INDEX_FIELD_OP:
570
571 Status = AcpiDsCreateIndexField (Op, (ACPI_HANDLE) Arg->Common.Node,
572 WalkState);
573 break;
574
575 case AML_BANK_FIELD_OP:
576
577 Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState);
578 break;
579
580 case AML_FIELD_OP:
581
582 Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState);
583 break;
584
585 default:
586 /* All NAMED_FIELD opcodes must be handled above */
587 break;
588 }
589 break;
590
591
592 case AML_TYPE_NAMED_SIMPLE:
593
594 Status = AcpiDsCreateOperands (WalkState, Arg);
595 if (ACPI_FAILURE (Status))
596 {
597 goto Cleanup;
598 }
599
600 switch (Op->Common.AmlOpcode)
601 {
602 case AML_PROCESSOR_OP:
603
604 Status = AcpiExCreateProcessor (WalkState);
605 break;
606
607 case AML_POWER_RES_OP:
608
609 Status = AcpiExCreatePowerResource (WalkState);
610 break;
611
612 case AML_MUTEX_OP:
613
614 Status = AcpiExCreateMutex (WalkState);
615 break;
616
617 case AML_EVENT_OP:
618
619 Status = AcpiExCreateEvent (WalkState);
620 break;
621
622
623 case AML_ALIAS_OP:
624
625 Status = AcpiExCreateAlias (WalkState);
626 break;
627
628 default:
629 /* Unknown opcode */
630
631 Status = AE_OK;
632 goto Cleanup;
633 }
634
635 /* Delete operands */
636
637 for (i = 1; i < WalkState->NumOperands; i++)
638 {
639 AcpiUtRemoveReference (WalkState->Operands[i]);
640 WalkState->Operands[i] = NULL;
641 }
642
643 break;
644 #endif /* ACPI_NO_METHOD_EXECUTION */
645
646 case AML_TYPE_NAMED_COMPLEX:
647
648 switch (Op->Common.AmlOpcode)
649 {
650 #ifndef ACPI_NO_METHOD_EXECUTION
651 case AML_REGION_OP:
652 case AML_DATA_REGION_OP:
653
654 if (Op->Common.AmlOpcode == AML_REGION_OP)
655 {
656 RegionSpace = (ACPI_ADR_SPACE_TYPE)
657 ((Op->Common.Value.Arg)->Common.Value.Integer);
658 }
659 else
660 {
661 RegionSpace = ACPI_ADR_SPACE_DATA_TABLE;
662 }
663
664 /*
665 * The OpRegion is not fully parsed at this time. The only valid
666 * argument is the SpaceId. (We must save the address of the
667 * AML of the address and length operands)
668 *
669 * If we have a valid region, initialize it. The namespace is
670 * unlocked at this point.
671 *
672 * Need to unlock interpreter if it is locked (if we are running
673 * a control method), in order to allow _REG methods to be run
674 * during AcpiEvInitializeRegion.
675 */
676 if (WalkState->MethodNode)
677 {
678 /*
679 * Executing a method: initialize the region and unlock
680 * the interpreter
681 */
682 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length,
683 RegionSpace, WalkState);
684 if (ACPI_FAILURE (Status))
685 {
686 return (Status);
687 }
688
689 AcpiExExitInterpreter ();
690 }
691
692 Status = AcpiEvInitializeRegion (AcpiNsGetAttachedObject (Node),
693 FALSE);
694 if (WalkState->MethodNode)
695 {
696 AcpiExEnterInterpreter ();
697 }
698
699 if (ACPI_FAILURE (Status))
700 {
701 /*
702 * If AE_NOT_EXIST is returned, it is not fatal
703 * because many regions get created before a handler
704 * is installed for said region.
705 */
706 if (AE_NOT_EXIST == Status)
707 {
708 Status = AE_OK;
709 }
710 }
711 break;
712
713
714 case AML_NAME_OP:
715
716 Status = AcpiDsCreateNode (WalkState, Node, Op);
717 break;
718
719
720 case AML_METHOD_OP:
721 /*
722 * MethodOp PkgLength NameString MethodFlags TermList
723 *
724 * Note: We must create the method node/object pair as soon as we
725 * see the method declaration. This allows later pass1 parsing
726 * of invocations of the method (need to know the number of
727 * arguments.)
728 */
729 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
730 "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
731 WalkState, Op, Op->Named.Node));
732
733 if (!AcpiNsGetAttachedObject (Op->Named.Node))
734 {
735 WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node);
736 WalkState->NumOperands = 1;
737
738 Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg);
739 if (ACPI_SUCCESS (Status))
740 {
741 Status = AcpiExCreateMethod (Op->Named.Data,
742 Op->Named.Length, WalkState);
743 }
744 WalkState->Operands[0] = NULL;
745 WalkState->NumOperands = 0;
746
747 if (ACPI_FAILURE (Status))
748 {
749 return_ACPI_STATUS (Status);
750 }
751 }
752 break;
753
754 #endif /* ACPI_NO_METHOD_EXECUTION */
755
756 default:
757 /* All NAMED_COMPLEX opcodes must be handled above */
758 break;
759 }
760 break;
761
762
763 case AML_CLASS_INTERNAL:
764
765 /* case AML_INT_NAMEPATH_OP: */
766 break;
767
768
769 case AML_CLASS_METHOD_CALL:
770
771 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
772 "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
773 WalkState, Op, Node));
774
775 /*
776 * Lookup the method name and save the Node
777 */
778 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
779 ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2,
780 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
781 WalkState, &(NewNode));
782 if (ACPI_SUCCESS (Status))
783 {
784 /*
785 * Make sure that what we found is indeed a method
786 * We didn't search for a method on purpose, to see if the name
787 * would resolve
788 */
789 if (NewNode->Type != ACPI_TYPE_METHOD)
790 {
791 Status = AE_AML_OPERAND_TYPE;
792 }
793
794 /* We could put the returned object (Node) on the object stack for
795 * later, but for now, we will put it in the "op" object that the
796 * parser uses, so we can get it again at the end of this scope
797 */
798 Op->Common.Node = NewNode;
799 }
800 else
801 {
802 ACPI_ERROR_NAMESPACE (Arg->Common.Value.String, Status);
803 }
804 break;
805
806
807 default:
808 break;
809 }
810
811 Cleanup:
812
813 /* Remove the Node pushed at the very beginning */
814
815 WalkState->Operands[0] = NULL;
816 WalkState->NumOperands = 0;
817 return_ACPI_STATUS (Status);
818 }
819