1 /******************************************************************************
3 * Module Name: dswload - Dispatcher namespace load callbacks
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2007, Intel Corp.
13 * All rights reserved.
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
38 * The above copyright and patent license is granted only if the following
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
73 * 3.4. Intel retains all right, title, and interest in and to the Original
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
81 * 4. Disclaimer and Export Compliance
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
115 *****************************************************************************/
117 #define __DSWLOAD_C__
119 #include <contrib/dev/acpica/acpi.h>
120 #include <contrib/dev/acpica/acparser.h>
121 #include <contrib/dev/acpica/amlcode.h>
122 #include <contrib/dev/acpica/acdispat.h>
123 #include <contrib/dev/acpica/acinterp.h>
124 #include <contrib/dev/acpica/acnamesp.h>
125 #include <contrib/dev/acpica/acevents.h>
127 #ifdef ACPI_ASL_COMPILER
128 #include <contrib/dev/acpica/acdisasm.h>
131 #define _COMPONENT ACPI_DISPATCHER
132 ACPI_MODULE_NAME ("dswload")
135 /*******************************************************************************
137 * FUNCTION: AcpiDsInitCallbacks
139 * PARAMETERS: WalkState - Current state of the parse tree walk
140 * PassNumber - 1, 2, or 3
144 * DESCRIPTION: Init walk state callbacks
146 ******************************************************************************/
149 AcpiDsInitCallbacks (
150 ACPI_WALK_STATE *WalkState,
157 WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 |
158 ACPI_PARSE_DELETE_TREE;
159 WalkState->DescendingCallback = AcpiDsLoad1BeginOp;
160 WalkState->AscendingCallback = AcpiDsLoad1EndOp;
164 WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 |
165 ACPI_PARSE_DELETE_TREE;
166 WalkState->DescendingCallback = AcpiDsLoad2BeginOp;
167 WalkState->AscendingCallback = AcpiDsLoad2EndOp;
171 #ifndef ACPI_NO_METHOD_EXECUTION
172 WalkState->ParseFlags |= ACPI_PARSE_EXECUTE |
173 ACPI_PARSE_DELETE_TREE;
174 WalkState->DescendingCallback = AcpiDsExecBeginOp;
175 WalkState->AscendingCallback = AcpiDsExecEndOp;
180 return (AE_BAD_PARAMETER);
187 /*******************************************************************************
189 * FUNCTION: AcpiDsLoad1BeginOp
191 * PARAMETERS: WalkState - Current state of the parse tree walk
192 * OutOp - Where to return op if a new one is created
196 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
198 ******************************************************************************/
202 ACPI_WALK_STATE *WalkState,
203 ACPI_PARSE_OBJECT **OutOp)
205 ACPI_PARSE_OBJECT *Op;
206 ACPI_NAMESPACE_NODE *Node;
208 ACPI_OBJECT_TYPE ObjectType;
213 ACPI_FUNCTION_TRACE (DsLoad1BeginOp);
217 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
219 /* We are only interested in opcodes that have an associated name */
223 if (!(WalkState->OpInfo->Flags & AML_NAMED))
226 return_ACPI_STATUS (AE_OK);
229 /* Check if this object has already been installed in the namespace */
234 return_ACPI_STATUS (AE_OK);
238 Path = AcpiPsGetNextNamestring (&WalkState->ParserState);
240 /* Map the raw opcode into an internal object type */
242 ObjectType = WalkState->OpInfo->ObjectType;
244 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
245 "State=%p Op=%p [%s]\n", WalkState, Op, AcpiUtGetTypeName (ObjectType)));
247 switch (WalkState->Opcode)
252 * The target name of the Scope() operator must exist at this point so
253 * that we can actually open the scope to enter new names underneath it.
254 * Allow search-to-root for single namesegs.
256 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
257 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node));
258 #ifdef ACPI_ASL_COMPILER
259 if (Status == AE_NOT_FOUND)
263 * Target of Scope() not found. Generate an External for it, and
264 * insert the name into the namespace.
266 AcpiDmAddToExternalList (Path, ACPI_TYPE_DEVICE, 0);
267 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
268 ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT,
272 if (ACPI_FAILURE (Status))
274 ACPI_ERROR_NAMESPACE (Path, Status);
275 return_ACPI_STATUS (Status);
279 * Check to make sure that the target is
280 * one of the opcodes that actually opens a scope
285 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
286 case ACPI_TYPE_DEVICE:
287 case ACPI_TYPE_POWER:
288 case ACPI_TYPE_PROCESSOR:
289 case ACPI_TYPE_THERMAL:
291 /* These are acceptable types */
294 case ACPI_TYPE_INTEGER:
295 case ACPI_TYPE_STRING:
296 case ACPI_TYPE_BUFFER:
299 * These types we will allow, but we will change the type. This
300 * enables some existing code of the form:
303 * Scope (DEB) { ... }
305 * Note: silently change the type here. On the second pass, we will report
308 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
309 "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n",
310 Path, AcpiUtGetTypeName (Node->Type)));
312 Node->Type = ACPI_TYPE_ANY;
313 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
318 /* All other types are an error */
320 ACPI_ERROR ((AE_INFO,
321 "Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)",
322 AcpiUtGetTypeName (Node->Type), Path));
324 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
331 * For all other named opcodes, we will enter the name into
334 * Setup the search flags.
335 * Since we are entering a name into the namespace, we do not want to
336 * enable the search-to-root upsearch.
338 * There are only two conditions where it is acceptable that the name
340 * 1) the Scope() operator can reopen a scoping object that was
341 * previously defined (Scope, Method, Device, etc.)
342 * 2) Whenever we are parsing a deferred opcode (OpRegion, Buffer,
343 * BufferField, or Package), the name of the object is already
346 if (WalkState->DeferredNode)
348 /* This name is already in the namespace, get the node */
350 Node = WalkState->DeferredNode;
356 * If we are executing a method, do not create any namespace objects
357 * during the load phase, only during execution.
359 if (WalkState->MethodNode)
366 Flags = ACPI_NS_NO_UPSEARCH;
367 if ((WalkState->Opcode != AML_SCOPE_OP) &&
368 (!(WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP)))
370 Flags |= ACPI_NS_ERROR_IF_FOUND;
371 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Cannot already exist\n",
372 AcpiUtGetTypeName (ObjectType)));
376 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
377 "[%s] Both Find or Create allowed\n",
378 AcpiUtGetTypeName (ObjectType)));
382 * Enter the named type into the internal namespace. We enter the name
383 * as we go downward in the parse tree. Any necessary subobjects that
384 * involve arguments to the opcode must be created as we go back up the
387 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
388 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node);
389 if (ACPI_FAILURE (Status))
391 if (Status == AE_ALREADY_EXISTS)
393 /* The name already exists in this scope */
395 if (Node->Flags & ANOBJ_IS_EXTERNAL)
398 * Allow one create on an object or segment that was
399 * previously declared External
401 Node->Flags &= ~ANOBJ_IS_EXTERNAL;
402 Node->Type = (UINT8) ObjectType;
404 /* Just retyped a node, probably will need to open a scope */
406 if (AcpiNsOpensScope (ObjectType))
408 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
409 if (ACPI_FAILURE (Status))
411 return_ACPI_STATUS (Status);
419 if (ACPI_FAILURE (Status))
421 ACPI_ERROR_NAMESPACE (Path, Status);
422 return_ACPI_STATUS (Status);
432 /* Create a new op */
434 Op = AcpiPsAllocOp (WalkState->Opcode);
437 return_ACPI_STATUS (AE_NO_MEMORY);
441 /* Initialize the op */
443 #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY))
444 Op->Named.Path = ACPI_CAST_PTR (UINT8, Path);
450 * Put the Node in the "op" object that the parser uses, so we
451 * can get it again quickly when this scope is closed
453 Op->Common.Node = Node;
454 Op->Named.Name = Node->Name.Integer;
457 AcpiPsAppendArg (AcpiPsGetParentScope (&WalkState->ParserState), Op);
459 return_ACPI_STATUS (Status);
463 /*******************************************************************************
465 * FUNCTION: AcpiDsLoad1EndOp
467 * PARAMETERS: WalkState - Current state of the parse tree walk
471 * DESCRIPTION: Ascending callback used during the loading of the namespace,
472 * both control methods and everything else.
474 ******************************************************************************/
478 ACPI_WALK_STATE *WalkState)
480 ACPI_PARSE_OBJECT *Op;
481 ACPI_OBJECT_TYPE ObjectType;
482 ACPI_STATUS Status = AE_OK;
485 ACPI_FUNCTION_TRACE (DsLoad1EndOp);
489 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
491 /* We are only interested in opcodes that have an associated name */
493 if (!(WalkState->OpInfo->Flags & (AML_NAMED | AML_FIELD)))
495 return_ACPI_STATUS (AE_OK);
498 /* Get the object type to determine if we should pop the scope */
500 ObjectType = WalkState->OpInfo->ObjectType;
502 #ifndef ACPI_NO_METHOD_EXECUTION
503 if (WalkState->OpInfo->Flags & AML_FIELD)
506 * If we are executing a method, do not create any namespace objects
507 * during the load phase, only during execution.
509 if (!WalkState->MethodNode)
511 if (WalkState->Opcode == AML_FIELD_OP ||
512 WalkState->Opcode == AML_BANK_FIELD_OP ||
513 WalkState->Opcode == AML_INDEX_FIELD_OP)
515 Status = AcpiDsInitFieldObjects (Op, WalkState);
518 return_ACPI_STATUS (Status);
522 * If we are executing a method, do not create any namespace objects
523 * during the load phase, only during execution.
525 if (!WalkState->MethodNode)
527 if (Op->Common.AmlOpcode == AML_REGION_OP)
529 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length,
530 (ACPI_ADR_SPACE_TYPE) ((Op->Common.Value.Arg)->Common.Value.Integer),
532 if (ACPI_FAILURE (Status))
534 return_ACPI_STATUS (Status);
540 if (Op->Common.AmlOpcode == AML_NAME_OP)
542 /* For Name opcode, get the object type from the argument */
544 if (Op->Common.Value.Arg)
546 ObjectType = (AcpiPsGetOpcodeInfo (
547 (Op->Common.Value.Arg)->Common.AmlOpcode))->ObjectType;
549 /* Set node type if we have a namespace node */
553 Op->Common.Node->Type = (UINT8) ObjectType;
559 * If we are executing a method, do not create any namespace objects
560 * during the load phase, only during execution.
562 if (!WalkState->MethodNode)
564 if (Op->Common.AmlOpcode == AML_METHOD_OP)
567 * MethodOp PkgLength NameString MethodFlags TermList
569 * Note: We must create the method node/object pair as soon as we
570 * see the method declaration. This allows later pass1 parsing
571 * of invocations of the method (need to know the number of
574 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
575 "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
576 WalkState, Op, Op->Named.Node));
578 if (!AcpiNsGetAttachedObject (Op->Named.Node))
580 WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node);
581 WalkState->NumOperands = 1;
583 Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg);
584 if (ACPI_SUCCESS (Status))
586 Status = AcpiExCreateMethod (Op->Named.Data,
587 Op->Named.Length, WalkState);
590 WalkState->Operands[0] = NULL;
591 WalkState->NumOperands = 0;
593 if (ACPI_FAILURE (Status))
595 return_ACPI_STATUS (Status);
601 /* Pop the scope stack (only if loading a table) */
603 if (!WalkState->MethodNode &&
604 AcpiNsOpensScope (ObjectType))
606 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s): Popping scope for Op %p\n",
607 AcpiUtGetTypeName (ObjectType), Op));
609 Status = AcpiDsScopeStackPop (WalkState);
612 return_ACPI_STATUS (Status);
616 /*******************************************************************************
618 * FUNCTION: AcpiDsLoad2BeginOp
620 * PARAMETERS: WalkState - Current state of the parse tree walk
621 * OutOp - Wher to return op if a new one is created
625 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
627 ******************************************************************************/
631 ACPI_WALK_STATE *WalkState,
632 ACPI_PARSE_OBJECT **OutOp)
634 ACPI_PARSE_OBJECT *Op;
635 ACPI_NAMESPACE_NODE *Node;
637 ACPI_OBJECT_TYPE ObjectType;
642 ACPI_FUNCTION_TRACE (DsLoad2BeginOp);
646 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
650 if ((WalkState->ControlState) &&
651 (WalkState->ControlState->Common.State ==
652 ACPI_CONTROL_CONDITIONAL_EXECUTING))
654 /* We are executing a while loop outside of a method */
656 Status = AcpiDsExecBeginOp (WalkState, OutOp);
657 return_ACPI_STATUS (Status);
660 /* We only care about Namespace opcodes here */
662 if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) &&
663 (WalkState->Opcode != AML_INT_NAMEPATH_OP)) ||
664 (!(WalkState->OpInfo->Flags & AML_NAMED)))
666 #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE
667 if ((WalkState->OpInfo->Class == AML_CLASS_EXECUTE) ||
668 (WalkState->OpInfo->Class == AML_CLASS_CONTROL))
670 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
671 "Begin/EXEC: %s (fl %8.8X)\n", WalkState->OpInfo->Name,
672 WalkState->OpInfo->Flags));
674 /* Executing a type1 or type2 opcode outside of a method */
676 Status = AcpiDsExecBeginOp (WalkState, OutOp);
677 return_ACPI_STATUS (Status);
680 return_ACPI_STATUS (AE_OK);
683 /* Get the name we are going to enter or lookup in the namespace */
685 if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
687 /* For Namepath op, get the path string */
689 BufferPtr = Op->Common.Value.String;
692 /* No name, just exit */
694 return_ACPI_STATUS (AE_OK);
699 /* Get name from the op */
701 BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name);
706 /* Get the namestring from the raw AML */
708 BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState);
711 /* Map the opcode into an internal object type */
713 ObjectType = WalkState->OpInfo->ObjectType;
715 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
716 "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType));
718 switch (WalkState->Opcode)
721 case AML_BANK_FIELD_OP:
722 case AML_INDEX_FIELD_OP:
728 case AML_INT_NAMEPATH_OP:
730 * The NamePath is an object reference to an existing object.
731 * Don't enter the name into the namespace, but look it up
734 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
735 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
741 * The Path is an object reference to an existing object.
742 * Don't enter the name into the namespace, but look it up
745 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
746 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
748 if (ACPI_FAILURE (Status))
750 #ifdef ACPI_ASL_COMPILER
751 if (Status == AE_NOT_FOUND)
757 ACPI_ERROR_NAMESPACE (BufferPtr, Status);
760 ACPI_ERROR_NAMESPACE (BufferPtr, Status);
762 return_ACPI_STATUS (Status);
766 * We must check to make sure that the target is
767 * one of the opcodes that actually opens a scope
772 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
773 case ACPI_TYPE_DEVICE:
774 case ACPI_TYPE_POWER:
775 case ACPI_TYPE_PROCESSOR:
776 case ACPI_TYPE_THERMAL:
778 /* These are acceptable types */
781 case ACPI_TYPE_INTEGER:
782 case ACPI_TYPE_STRING:
783 case ACPI_TYPE_BUFFER:
786 * These types we will allow, but we will change the type. This
787 * enables some existing code of the form:
790 * Scope (DEB) { ... }
792 ACPI_WARNING ((AE_INFO,
793 "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)",
794 BufferPtr, AcpiUtGetTypeName (Node->Type)));
796 Node->Type = ACPI_TYPE_ANY;
797 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
802 /* All other types are an error */
804 ACPI_ERROR ((AE_INFO,
805 "Invalid type (%s) for target of Scope operator [%4.4s]",
806 AcpiUtGetTypeName (Node->Type), BufferPtr));
808 return (AE_AML_OPERAND_TYPE);
814 /* All other opcodes */
816 if (Op && Op->Common.Node)
818 /* This op/node was previously entered into the namespace */
820 Node = Op->Common.Node;
822 if (AcpiNsOpensScope (ObjectType))
824 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
825 if (ACPI_FAILURE (Status))
827 return_ACPI_STATUS (Status);
831 return_ACPI_STATUS (AE_OK);
835 * Enter the named type into the internal namespace. We enter the name
836 * as we go downward in the parse tree. Any necessary subobjects that
837 * involve arguments to the opcode must be created as we go back up the
840 * Note: Name may already exist if we are executing a deferred opcode.
842 if (WalkState->DeferredNode)
844 /* This name is already in the namespace, get the node */
846 Node = WalkState->DeferredNode;
851 Flags = ACPI_NS_NO_UPSEARCH;
852 if (WalkState->PassNumber == ACPI_IMODE_EXECUTE)
854 /* Execution mode, node cannot already exist, node is temporary */
856 Flags |= (ACPI_NS_ERROR_IF_FOUND | ACPI_NS_TEMPORARY);
859 /* Add new entry or lookup existing entry */
861 Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
862 ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node);
866 if (ACPI_FAILURE (Status))
868 ACPI_ERROR_NAMESPACE (BufferPtr, Status);
869 return_ACPI_STATUS (Status);
874 /* Create a new op */
876 Op = AcpiPsAllocOp (WalkState->Opcode);
879 return_ACPI_STATUS (AE_NO_MEMORY);
882 /* Initialize the new op */
886 Op->Named.Name = Node->Name.Integer;
892 * Put the Node in the "op" object that the parser uses, so we
893 * can get it again quickly when this scope is closed
895 Op->Common.Node = Node;
896 return_ACPI_STATUS (Status);
900 /*******************************************************************************
902 * FUNCTION: AcpiDsLoad2EndOp
904 * PARAMETERS: WalkState - Current state of the parse tree walk
908 * DESCRIPTION: Ascending callback used during the loading of the namespace,
909 * both control methods and everything else.
911 ******************************************************************************/
915 ACPI_WALK_STATE *WalkState)
917 ACPI_PARSE_OBJECT *Op;
918 ACPI_STATUS Status = AE_OK;
919 ACPI_OBJECT_TYPE ObjectType;
920 ACPI_NAMESPACE_NODE *Node;
921 ACPI_PARSE_OBJECT *Arg;
922 ACPI_NAMESPACE_NODE *NewNode;
923 #ifndef ACPI_NO_METHOD_EXECUTION
928 ACPI_FUNCTION_TRACE (DsLoad2EndOp);
931 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
932 WalkState->OpInfo->Name, Op, WalkState));
934 /* Check if opcode had an associated namespace object */
936 if (!(WalkState->OpInfo->Flags & AML_NSOBJECT))
938 #ifndef ACPI_NO_METHOD_EXECUTION
939 #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE
940 /* No namespace object. Executable opcode? */
942 if ((WalkState->OpInfo->Class == AML_CLASS_EXECUTE) ||
943 (WalkState->OpInfo->Class == AML_CLASS_CONTROL))
945 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
946 "End/EXEC: %s (fl %8.8X)\n", WalkState->OpInfo->Name,
947 WalkState->OpInfo->Flags));
949 /* Executing a type1 or type2 opcode outside of a method */
951 Status = AcpiDsExecEndOp (WalkState);
952 return_ACPI_STATUS (Status);
956 return_ACPI_STATUS (AE_OK);
959 if (Op->Common.AmlOpcode == AML_SCOPE_OP)
961 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
962 "Ending scope Op=%p State=%p\n", Op, WalkState));
965 ObjectType = WalkState->OpInfo->ObjectType;
968 * Get the Node/name from the earlier lookup
969 * (It was saved in the *op structure)
971 Node = Op->Common.Node;
974 * Put the Node on the object stack (Contains the ACPI Name of
977 WalkState->Operands[0] = (void *) Node;
978 WalkState->NumOperands = 1;
980 /* Pop the scope stack */
982 if (AcpiNsOpensScope (ObjectType) &&
983 (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP))
985 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n",
986 AcpiUtGetTypeName (ObjectType), Op));
988 Status = AcpiDsScopeStackPop (WalkState);
989 if (ACPI_FAILURE (Status))
996 * Named operations are as follows:
1000 * AML_CREATEBITFIELD
1001 * AML_CREATEBYTEFIELD
1002 * AML_CREATEDWORDFIELD
1004 * AML_CREATEQWORDFIELD
1005 * AML_CREATEWORDFIELD
1023 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
1024 "Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
1025 AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node));
1027 /* Decode the opcode */
1029 Arg = Op->Common.Value.Arg;
1031 switch (WalkState->OpInfo->Type)
1033 #ifndef ACPI_NO_METHOD_EXECUTION
1035 case AML_TYPE_CREATE_FIELD:
1037 * Create the field object, but the field buffer and index must
1038 * be evaluated later during the execution phase
1040 Status = AcpiDsCreateBufferField (Op, WalkState);
1044 case AML_TYPE_NAMED_FIELD:
1046 * If we are executing a method, initialize the field
1048 if (WalkState->MethodNode)
1050 Status = AcpiDsInitFieldObjects (Op, WalkState);
1053 switch (Op->Common.AmlOpcode)
1055 case AML_INDEX_FIELD_OP:
1057 Status = AcpiDsCreateIndexField (Op, (ACPI_HANDLE) Arg->Common.Node,
1061 case AML_BANK_FIELD_OP:
1063 Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState);
1068 Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState);
1072 /* All NAMED_FIELD opcodes must be handled above */
1078 case AML_TYPE_NAMED_SIMPLE:
1080 Status = AcpiDsCreateOperands (WalkState, Arg);
1081 if (ACPI_FAILURE (Status))
1086 switch (Op->Common.AmlOpcode)
1088 case AML_PROCESSOR_OP:
1090 Status = AcpiExCreateProcessor (WalkState);
1093 case AML_POWER_RES_OP:
1095 Status = AcpiExCreatePowerResource (WalkState);
1100 Status = AcpiExCreateMutex (WalkState);
1105 Status = AcpiExCreateEvent (WalkState);
1108 case AML_DATA_REGION_OP:
1110 Status = AcpiExCreateTableRegion (WalkState);
1115 Status = AcpiExCreateAlias (WalkState);
1119 /* Unknown opcode */
1125 /* Delete operands */
1127 for (i = 1; i < WalkState->NumOperands; i++)
1129 AcpiUtRemoveReference (WalkState->Operands[i]);
1130 WalkState->Operands[i] = NULL;
1134 #endif /* ACPI_NO_METHOD_EXECUTION */
1136 case AML_TYPE_NAMED_COMPLEX:
1138 switch (Op->Common.AmlOpcode)
1140 #ifndef ACPI_NO_METHOD_EXECUTION
1144 * If we are executing a method, initialize the region
1146 if (WalkState->MethodNode)
1148 Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length,
1149 (ACPI_ADR_SPACE_TYPE)
1150 ((Op->Common.Value.Arg)->Common.Value.Integer),
1152 if (ACPI_FAILURE (Status))
1159 * The OpRegion is not fully parsed at this time. Only valid
1160 * argument is the SpaceId. (We must save the address of the
1161 * AML of the address and length operands)
1165 * If we have a valid region, initialize it
1166 * Namespace is NOT locked at this point.
1168 * TBD: need to unlock interpreter if it is locked, in order
1169 * to allow _REG methods to be run.
1171 Status = AcpiEvInitializeRegion (AcpiNsGetAttachedObject (Node),
1173 if (ACPI_FAILURE (Status))
1176 * If AE_NOT_EXIST is returned, it is not fatal
1177 * because many regions get created before a handler
1178 * is installed for said region.
1180 if (AE_NOT_EXIST == Status)
1190 Status = AcpiDsCreateNode (WalkState, Node, Op);
1196 * MethodOp PkgLength NameString MethodFlags TermList
1198 * Note: We must create the method node/object pair as soon as we
1199 * see the method declaration. This allows later pass1 parsing
1200 * of invocations of the method (need to know the number of
1203 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
1204 "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
1205 WalkState, Op, Op->Named.Node));
1207 if (!AcpiNsGetAttachedObject (Op->Named.Node))
1209 WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node);
1210 WalkState->NumOperands = 1;
1212 Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg);
1213 if (ACPI_SUCCESS (Status))
1215 Status = AcpiExCreateMethod (Op->Named.Data,
1216 Op->Named.Length, WalkState);
1218 WalkState->Operands[0] = NULL;
1219 WalkState->NumOperands = 0;
1221 if (ACPI_FAILURE (Status))
1223 return_ACPI_STATUS (Status);
1228 #endif /* ACPI_NO_METHOD_EXECUTION */
1231 /* All NAMED_COMPLEX opcodes must be handled above */
1237 case AML_CLASS_INTERNAL:
1239 /* case AML_INT_NAMEPATH_OP: */
1243 case AML_CLASS_METHOD_CALL:
1245 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
1246 "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
1247 WalkState, Op, Node));
1250 * Lookup the method name and save the Node
1252 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
1253 ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2,
1254 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
1255 WalkState, &(NewNode));
1256 if (ACPI_SUCCESS (Status))
1259 * Make sure that what we found is indeed a method
1260 * We didn't search for a method on purpose, to see if the name
1263 if (NewNode->Type != ACPI_TYPE_METHOD)
1265 Status = AE_AML_OPERAND_TYPE;
1268 /* We could put the returned object (Node) on the object stack for
1269 * later, but for now, we will put it in the "op" object that the
1270 * parser uses, so we can get it again at the end of this scope
1272 Op->Common.Node = NewNode;
1276 ACPI_ERROR_NAMESPACE (Arg->Common.Value.String, Status);
1287 /* Remove the Node pushed at the very beginning */
1289 WalkState->Operands[0] = NULL;
1290 WalkState->NumOperands = 0;
1291 return_ACPI_STATUS (Status);