1 /******************************************************************************
3 * Module Name: dswload2 - Dispatcher second pass namespace load callbacks
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2020, Intel Corp.
12 * All rights reserved.
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
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
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;
37 * The above copyright and patent license is granted only if the following
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.
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
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
72 * 3.4. Intel retains all right, title, and interest in and to the Original
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.
80 * 4. Disclaimer and Export Compliance
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
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
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.
114 *****************************************************************************
116 * Alternatively, you may choose to be licensed under the terms of the
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
122 * 1. Redistributions of source code must retain the above copyright
123 * notice, this list of conditions, and the following disclaimer,
124 * without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 * substantially similar to the "NO WARRANTY" disclaimer below
127 * ("Disclaimer") and any redistribution must be conditioned upon
128 * including a substantially similar Disclaimer requirement for further
129 * binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 * of any contributors may be used to endorse or promote products derived
132 * from this software without specific prior written permission.
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
150 *****************************************************************************/
153 #include "accommon.h"
154 #include "acparser.h"
156 #include "acdispat.h"
157 #include "acinterp.h"
158 #include "acnamesp.h"
159 #include "acevents.h"
161 #include "aecommon.h"
164 #define _COMPONENT ACPI_DISPATCHER
165 ACPI_MODULE_NAME ("dswload2")
168 /*******************************************************************************
170 * FUNCTION: AcpiDsLoad2BeginOp
172 * PARAMETERS: WalkState - Current state of the parse tree walk
173 * OutOp - Where to return op if a new one is created
177 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
179 ******************************************************************************/
183 ACPI_WALK_STATE *WalkState,
184 ACPI_PARSE_OBJECT **OutOp)
186 ACPI_PARSE_OBJECT *Op;
187 ACPI_NAMESPACE_NODE *Node;
189 ACPI_OBJECT_TYPE ObjectType;
194 ACPI_FUNCTION_TRACE (DsLoad2BeginOp);
198 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
202 if ((WalkState->ControlState) &&
203 (WalkState->ControlState->Common.State ==
204 ACPI_CONTROL_CONDITIONAL_EXECUTING))
206 /* We are executing a while loop outside of a method */
208 Status = AcpiDsExecBeginOp (WalkState, OutOp);
209 return_ACPI_STATUS (Status);
212 /* We only care about Namespace opcodes here */
214 if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) &&
215 (WalkState->Opcode != AML_INT_NAMEPATH_OP)) ||
216 (!(WalkState->OpInfo->Flags & AML_NAMED)))
218 return_ACPI_STATUS (AE_OK);
221 /* Get the name we are going to enter or lookup in the namespace */
223 if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
225 /* For Namepath op, get the path string */
227 BufferPtr = Op->Common.Value.String;
230 /* No name, just exit */
232 return_ACPI_STATUS (AE_OK);
237 /* Get name from the op */
239 BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name);
244 /* Get the namestring from the raw AML */
246 BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState);
249 /* Map the opcode into an internal object type */
251 ObjectType = WalkState->OpInfo->ObjectType;
253 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
254 "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType));
256 switch (WalkState->Opcode)
259 case AML_BANK_FIELD_OP:
260 case AML_INDEX_FIELD_OP:
266 case AML_INT_NAMEPATH_OP:
268 * The NamePath is an object reference to an existing object.
269 * Don't enter the name into the namespace, but look it up
272 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
273 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
279 /* Special case for Scope(\) -> refers to the Root node */
281 if (Op && (Op->Named.Node == AcpiGbl_RootNode))
283 Node = Op->Named.Node;
285 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
286 if (ACPI_FAILURE (Status))
288 return_ACPI_STATUS (Status);
294 * The Path is an object reference to an existing object.
295 * Don't enter the name into the namespace, but look it up
298 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
299 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
301 if (ACPI_FAILURE (Status))
303 #ifdef ACPI_ASL_COMPILER
304 if (Status == AE_NOT_FOUND)
310 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
314 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
317 return_ACPI_STATUS (Status);
322 * We must check to make sure that the target is
323 * one of the opcodes that actually opens a scope
328 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
329 case ACPI_TYPE_DEVICE:
330 case ACPI_TYPE_POWER:
331 case ACPI_TYPE_PROCESSOR:
332 case ACPI_TYPE_THERMAL:
334 /* These are acceptable types */
337 case ACPI_TYPE_INTEGER:
338 case ACPI_TYPE_STRING:
339 case ACPI_TYPE_BUFFER:
342 * These types we will allow, but we will change the type.
343 * This enables some existing code of the form:
346 * Scope (DEB) { ... }
348 ACPI_WARNING ((AE_INFO,
349 "Type override - [%4.4s] had invalid type (%s) "
350 "for Scope operator, changed to type ANY",
351 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type)));
353 Node->Type = ACPI_TYPE_ANY;
354 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
357 case ACPI_TYPE_METHOD:
360 * Allow scope change to root during execution of module-level
361 * code. Root is typed METHOD during this time.
363 if ((Node == AcpiGbl_RootNode) &&
364 (WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
369 /*lint -fallthrough */
373 /* All other types are an error */
375 ACPI_ERROR ((AE_INFO,
376 "Invalid type (%s) for target of "
377 "Scope operator [%4.4s] (Cannot override)",
378 AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node)));
380 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
386 /* All other opcodes */
388 if (Op && Op->Common.Node)
390 /* This op/node was previously entered into the namespace */
392 Node = Op->Common.Node;
394 if (AcpiNsOpensScope (ObjectType))
396 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
397 if (ACPI_FAILURE (Status))
399 return_ACPI_STATUS (Status);
403 return_ACPI_STATUS (AE_OK);
407 * Enter the named type into the internal namespace. We enter the name
408 * as we go downward in the parse tree. Any necessary subobjects that
409 * involve arguments to the opcode must be created as we go back up the
412 * Note: Name may already exist if we are executing a deferred opcode.
414 if (WalkState->DeferredNode)
416 /* This name is already in the namespace, get the node */
418 Node = WalkState->DeferredNode;
423 Flags = ACPI_NS_NO_UPSEARCH;
424 if (WalkState->PassNumber == ACPI_IMODE_EXECUTE)
426 /* Execution mode, node cannot already exist, node is temporary */
428 Flags |= ACPI_NS_ERROR_IF_FOUND;
430 if (!(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
432 Flags |= ACPI_NS_TEMPORARY;
436 #ifdef ACPI_ASL_COMPILER
439 * Do not open a scope for AML_EXTERNAL_OP
440 * AcpiNsLookup can open a new scope based on the object type
441 * of this op. AML_EXTERNAL_OP is a declaration rather than a
442 * definition. In the case that this external is a method object,
443 * AcpiNsLookup will open a new scope. However, an AML_EXTERNAL_OP
444 * associated with the ACPI_TYPE_METHOD is a declaration, rather than
445 * a definition. Flags is set to avoid opening a scope for any
448 if (WalkState->Opcode == AML_EXTERNAL_OP)
450 Flags |= ACPI_NS_DONT_OPEN_SCOPE;
455 * For name creation opcodes, the full namepath prefix must
456 * exist, except for the final (new) nameseg.
458 if (WalkState->OpInfo->Flags & AML_NAMED)
460 Flags |= ACPI_NS_PREFIX_MUST_EXIST;
463 /* Add new entry or lookup existing entry */
465 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
466 ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node);
468 if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY))
470 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
471 "***New Node [%4.4s] %p is temporary\n",
472 AcpiUtGetNodeName (Node), Node));
477 if (ACPI_FAILURE (Status))
479 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
481 return_ACPI_STATUS (Status);
486 /* Create a new op */
488 Op = AcpiPsAllocOp (WalkState->Opcode, WalkState->Aml);
491 return_ACPI_STATUS (AE_NO_MEMORY);
494 /* Initialize the new op */
498 Op->Named.Name = Node->Name.Integer;
504 * Put the Node in the "op" object that the parser uses, so we
505 * can get it again quickly when this scope is closed
507 Op->Common.Node = Node;
508 return_ACPI_STATUS (Status);
512 /*******************************************************************************
514 * FUNCTION: AcpiDsLoad2EndOp
516 * PARAMETERS: WalkState - Current state of the parse tree walk
520 * DESCRIPTION: Ascending callback used during the loading of the namespace,
521 * both control methods and everything else.
523 ******************************************************************************/
527 ACPI_WALK_STATE *WalkState)
529 ACPI_PARSE_OBJECT *Op;
530 ACPI_STATUS Status = AE_OK;
531 ACPI_OBJECT_TYPE ObjectType;
532 ACPI_NAMESPACE_NODE *Node;
533 ACPI_PARSE_OBJECT *Arg;
534 ACPI_NAMESPACE_NODE *NewNode;
538 ACPI_OPERAND_OBJECT *ObjDesc;
543 ACPI_FUNCTION_TRACE (DsLoad2EndOp);
546 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
547 WalkState->OpInfo->Name, Op, WalkState));
549 /* Check if opcode had an associated namespace object */
551 if (!(WalkState->OpInfo->Flags & AML_NSOBJECT))
553 return_ACPI_STATUS (AE_OK);
556 if (Op->Common.AmlOpcode == AML_SCOPE_OP)
558 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
559 "Ending scope Op=%p State=%p\n", Op, WalkState));
562 ObjectType = WalkState->OpInfo->ObjectType;
565 * Get the Node/name from the earlier lookup
566 * (It was saved in the *op structure)
568 Node = Op->Common.Node;
571 * Put the Node on the object stack (Contains the ACPI Name of
574 WalkState->Operands[0] = (void *) Node;
575 WalkState->NumOperands = 1;
577 /* Pop the scope stack */
579 if (AcpiNsOpensScope (ObjectType) &&
580 (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP))
582 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n",
583 AcpiUtGetTypeName (ObjectType), Op));
585 Status = AcpiDsScopeStackPop (WalkState);
586 if (ACPI_FAILURE (Status))
593 * Named operations are as follows:
598 * AML_CREATEBYTEFIELD
599 * AML_CREATEDWORDFIELD
601 * AML_CREATEQWORDFIELD
602 * AML_CREATEWORDFIELD
620 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
621 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
622 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node));
624 /* Decode the opcode */
626 Arg = Op->Common.Value.Arg;
628 switch (WalkState->OpInfo->Type)
631 case AML_TYPE_CREATE_FIELD:
633 * Create the field object, but the field buffer and index must
634 * be evaluated later during the execution phase
636 Status = AcpiDsCreateBufferField (Op, WalkState);
637 if ACPI_FAILURE (Status)
639 ACPI_EXCEPTION ((AE_INFO, Status, "CreateBufferField failure"));
644 case AML_TYPE_NAMED_FIELD:
646 * If we are executing a method, initialize the field
648 if (WalkState->MethodNode)
650 Status = AcpiDsInitFieldObjects (Op, WalkState);
653 switch (Op->Common.AmlOpcode)
655 case AML_INDEX_FIELD_OP:
657 Status = AcpiDsCreateIndexField (
658 Op, (ACPI_HANDLE) Arg->Common.Node, WalkState);
661 case AML_BANK_FIELD_OP:
663 Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState);
668 Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState);
673 /* All NAMED_FIELD opcodes must be handled above */
678 case AML_TYPE_NAMED_SIMPLE:
680 Status = AcpiDsCreateOperands (WalkState, Arg);
681 if (ACPI_FAILURE (Status))
686 switch (Op->Common.AmlOpcode)
688 case AML_PROCESSOR_OP:
690 Status = AcpiExCreateProcessor (WalkState);
693 case AML_POWER_RESOURCE_OP:
695 Status = AcpiExCreatePowerResource (WalkState);
700 Status = AcpiExCreateMutex (WalkState);
705 Status = AcpiExCreateEvent (WalkState);
710 Status = AcpiExCreateAlias (WalkState);
721 /* Delete operands */
723 for (i = 1; i < WalkState->NumOperands; i++)
725 AcpiUtRemoveReference (WalkState->Operands[i]);
726 WalkState->Operands[i] = NULL;
731 case AML_TYPE_NAMED_COMPLEX:
733 switch (Op->Common.AmlOpcode)
736 case AML_DATA_REGION_OP:
738 if (Op->Common.AmlOpcode == AML_REGION_OP)
740 RegionSpace = (ACPI_ADR_SPACE_TYPE)
741 ((Op->Common.Value.Arg)->Common.Value.Integer);
745 RegionSpace = ACPI_ADR_SPACE_DATA_TABLE;
749 * The OpRegion is not fully parsed at this time. The only valid
750 * argument is the SpaceId. (We must save the address of the
751 * AML of the address and length operands)
753 * If we have a valid region, initialize it. The namespace is
754 * unlocked at this point.
756 * Need to unlock interpreter if it is locked (if we are running
757 * a control method), in order to allow _REG methods to be run
758 * during AcpiEvInitializeRegion.
760 if (WalkState->MethodNode)
763 * Executing a method: initialize the region and unlock
766 Status = AcpiExCreateRegion (Op->Named.Data,
767 Op->Named.Length, RegionSpace, WalkState);
768 if (ACPI_FAILURE (Status))
770 return_ACPI_STATUS (Status);
774 Status = AcpiEvInitializeRegion (
775 AcpiNsGetAttachedObject (Node));
780 Status = AcpiDsCreateNode (WalkState, Node, Op);
781 if (ACPI_FAILURE (Status))
788 * AcpiExec support for namespace initialization file (initialize
789 * Name opcodes in this code.)
791 Namepath = AcpiNsGetExternalPathname (Node);
792 Status = AeLookupInitFileEntry (Namepath, &ObjDesc);
793 if (ACPI_SUCCESS (Status))
795 /* Detach any existing object, attach new object */
799 AcpiNsDetachObject (Node);
801 AcpiNsAttachObject (Node, ObjDesc, ObjDesc->Common.Type);
803 ACPI_FREE (Namepath);
810 * MethodOp PkgLength NameString MethodFlags TermList
812 * Note: We must create the method node/object pair as soon as we
813 * see the method declaration. This allows later pass1 parsing
814 * of invocations of the method (need to know the number of
817 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
818 "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
819 WalkState, Op, Op->Named.Node));
821 if (!AcpiNsGetAttachedObject (Op->Named.Node))
823 WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node);
824 WalkState->NumOperands = 1;
826 Status = AcpiDsCreateOperands (
827 WalkState, Op->Common.Value.Arg);
828 if (ACPI_SUCCESS (Status))
830 Status = AcpiExCreateMethod (
831 Op->Named.Data, Op->Named.Length, WalkState);
834 WalkState->Operands[0] = NULL;
835 WalkState->NumOperands = 0;
837 if (ACPI_FAILURE (Status))
839 return_ACPI_STATUS (Status);
847 /* All NAMED_COMPLEX opcodes must be handled above */
852 case AML_CLASS_INTERNAL:
854 /* case AML_INT_NAMEPATH_OP: */
857 case AML_CLASS_METHOD_CALL:
859 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
860 "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
861 WalkState, Op, Node));
864 * Lookup the method name and save the Node
866 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
867 ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2,
868 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
869 WalkState, &(NewNode));
870 if (ACPI_SUCCESS (Status))
873 * Make sure that what we found is indeed a method
874 * We didn't search for a method on purpose, to see if the name
877 if (NewNode->Type != ACPI_TYPE_METHOD)
879 Status = AE_AML_OPERAND_TYPE;
882 /* We could put the returned object (Node) on the object stack for
883 * later, but for now, we will put it in the "op" object that the
884 * parser uses, so we can get it again at the end of this scope
886 Op->Common.Node = NewNode;
890 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
891 Arg->Common.Value.String, Status);
903 /* Remove the Node pushed at the very beginning */
905 WalkState->Operands[0] = NULL;
906 WalkState->NumOperands = 0;
907 return_ACPI_STATUS (Status);