1 /******************************************************************************
3 * Module Name: dswload - Dispatcher namespace load callbacks
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2018, 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 *****************************************************************************/
152 #include "aslcompiler.h"
154 #include "acdispat.h"
155 #include "acnamesp.h"
156 #include "acparser.h"
157 #include "aslcompiler.y.h"
160 #define _COMPONENT ACPI_COMPILER
161 ACPI_MODULE_NAME ("aslload")
163 /* Local prototypes */
166 LdLoadFieldElements (
167 ACPI_PARSE_OBJECT *Op,
168 ACPI_WALK_STATE *WalkState);
171 LdLoadResourceElements (
172 ACPI_PARSE_OBJECT *Op,
173 ACPI_WALK_STATE *WalkState);
177 ACPI_PARSE_OBJECT *Op,
183 ACPI_PARSE_OBJECT *Op,
188 LdCommonNamespaceEnd (
189 ACPI_PARSE_OBJECT *Op,
194 /*******************************************************************************
196 * FUNCTION: LdLoadNamespace
198 * PARAMETERS: RootOp - Root of the parse tree
202 * DESCRIPTION: Perform a walk of the parse tree that in turn loads all of the
203 * named ASL/AML objects into the namespace. The namespace is
204 * constructed in order to resolve named references and references
205 * to named fields within resource templates/descriptors.
207 ******************************************************************************/
211 ACPI_PARSE_OBJECT *RootOp)
213 ACPI_WALK_STATE *WalkState;
216 /* Create a new walk state */
218 WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
221 return (AE_NO_MEMORY);
224 /* Walk the entire parse tree, first pass */
226 TrWalkParseTree (RootOp, ASL_WALK_VISIT_TWICE, LdNamespace1Begin,
227 LdCommonNamespaceEnd, WalkState);
229 /* Second pass to handle forward references */
231 TrWalkParseTree (RootOp, ASL_WALK_VISIT_TWICE, LdNamespace2Begin,
232 LdCommonNamespaceEnd, WalkState);
234 /* Dump the namespace if debug is enabled */
236 AcpiNsDumpTables (ACPI_NS_ALL, ACPI_UINT32_MAX);
237 ACPI_FREE (WalkState);
242 /*******************************************************************************
244 * FUNCTION: LdLoadFieldElements
246 * PARAMETERS: Op - Parent node (Field)
247 * WalkState - Current walk state
251 * DESCRIPTION: Enter the named elements of the field (children of the parent)
252 * into the namespace.
254 ******************************************************************************/
257 LdLoadFieldElements (
258 ACPI_PARSE_OBJECT *Op,
259 ACPI_WALK_STATE *WalkState)
261 ACPI_PARSE_OBJECT *Child = NULL;
262 ACPI_NAMESPACE_NODE *Node;
266 /* Get the first named field element */
268 switch (Op->Asl.AmlOpcode)
270 case AML_BANK_FIELD_OP:
272 Child = UtGetArg (Op, 6);
275 case AML_INDEX_FIELD_OP:
277 Child = UtGetArg (Op, 5);
282 Child = UtGetArg (Op, 4);
287 /* No other opcodes should arrive here */
289 return (AE_BAD_PARAMETER);
292 /* Enter all elements into the namespace */
296 switch (Child->Asl.AmlOpcode)
298 case AML_INT_RESERVEDFIELD_OP:
299 case AML_INT_ACCESSFIELD_OP:
300 case AML_INT_CONNECTION_OP:
305 Status = AcpiNsLookup (WalkState->ScopeInfo,
306 Child->Asl.Value.String,
307 ACPI_TYPE_LOCAL_REGION_FIELD,
308 ACPI_IMODE_LOAD_PASS1,
309 ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
310 ACPI_NS_ERROR_IF_FOUND, NULL, &Node);
311 if (ACPI_FAILURE (Status))
313 if (Status != AE_ALREADY_EXISTS)
315 AslError (ASL_ERROR, ASL_MSG_CORE_EXCEPTION, Child,
316 Child->Asl.Value.String);
319 else if (Status == AE_ALREADY_EXISTS &&
320 (Node->Flags & ANOBJ_IS_EXTERNAL) &&
321 Node->OwnerId != WalkState->OwnerId)
323 Node->Type = (UINT8) ACPI_TYPE_LOCAL_REGION_FIELD;
328 * The name already exists in this scope
329 * But continue processing the elements
331 AslDualParseOpError (ASL_WARNING, ASL_MSG_EXTERN_COLLISION, Child,
332 Child->Asl.Value.String, ASL_MSG_EXTERN_FOUND_HERE, Node->Op,
333 Node->Op->Asl.ExternalName);
338 Child->Asl.Node = Node;
344 Child = Child->Asl.Next;
351 /*******************************************************************************
353 * FUNCTION: LdLoadResourceElements
355 * PARAMETERS: Op - Parent node (Resource Descriptor)
356 * WalkState - Current walk state
360 * DESCRIPTION: Enter the named elements of the resource descriptor (children
361 * of the parent) into the namespace.
363 * NOTE: In the real AML namespace, these named elements never exist. But
364 * we simply use the namespace here as a symbol table so we can look
365 * them up as they are referenced.
367 ******************************************************************************/
370 LdLoadResourceElements (
371 ACPI_PARSE_OBJECT *Op,
372 ACPI_WALK_STATE *WalkState)
374 ACPI_PARSE_OBJECT *InitializerOp = NULL;
375 ACPI_NAMESPACE_NODE *Node;
380 * Enter the resource name into the namespace. Name must not already exist.
381 * This opens a scope, so later field names are guaranteed to be new/unique.
383 Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Asl.Namepath,
384 ACPI_TYPE_LOCAL_RESOURCE, ACPI_IMODE_LOAD_PASS1,
385 ACPI_NS_NO_UPSEARCH | ACPI_NS_ERROR_IF_FOUND,
387 if (ACPI_FAILURE (Status))
389 if (Status == AE_ALREADY_EXISTS)
391 /* Actual node causing the error was saved in ParentMethod */
393 AslDualParseOpError (ASL_ERROR, ASL_MSG_NAME_EXISTS,
394 (ACPI_PARSE_OBJECT *) Op->Asl.ParentMethod,
395 Op->Asl.Namepath, ASL_MSG_FOUND_HERE, Node->Op,
396 Node->Op->Asl.ExternalName);
402 Node->Value = (UINT32) Op->Asl.Value.Integer;
407 * Now enter the predefined fields, for easy lookup when referenced
410 InitializerOp = ASL_GET_CHILD_NODE (Op);
411 while (InitializerOp)
413 if (InitializerOp->Asl.ExternalName)
415 Status = AcpiNsLookup (WalkState->ScopeInfo,
416 InitializerOp->Asl.ExternalName,
417 ACPI_TYPE_LOCAL_RESOURCE_FIELD,
418 ACPI_IMODE_LOAD_PASS1,
419 ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE,
421 if (ACPI_FAILURE (Status))
427 * Store the field offset and length in the namespace node
428 * so it can be used when the field is referenced
430 Node->Value = InitializerOp->Asl.Value.Tag.BitOffset;
431 Node->Length = InitializerOp->Asl.Value.Tag.BitLength;
432 InitializerOp->Asl.Node = Node;
433 Node->Op = InitializerOp;
436 InitializerOp = ASL_GET_PEER_NODE (InitializerOp);
443 /*******************************************************************************
445 * FUNCTION: LdNamespace1Begin
447 * PARAMETERS: ASL_WALK_CALLBACK
451 * DESCRIPTION: Descending callback used during the parse tree walk. If this
452 * is a named AML opcode, enter into the namespace
454 ******************************************************************************/
458 ACPI_PARSE_OBJECT *Op,
462 ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context;
463 ACPI_NAMESPACE_NODE *Node;
464 ACPI_PARSE_OBJECT *MethodOp;
466 ACPI_OBJECT_TYPE ObjectType;
467 ACPI_OBJECT_TYPE ActualObjectType = ACPI_TYPE_ANY;
469 UINT32 Flags = ACPI_NS_NO_UPSEARCH;
470 ACPI_PARSE_OBJECT *Arg;
472 BOOLEAN ForceNewScope = FALSE;
473 ACPI_OWNER_ID OwnerId = 0;
474 const ACPI_OPCODE_INFO *OpInfo;
475 ACPI_PARSE_OBJECT *ParentOp;
478 ACPI_FUNCTION_NAME (LdNamespace1Begin);
481 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op %p [%s]\n",
482 Op, Op->Asl.ParseOpName));
484 if (Op->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK)
487 * Allocate an OwnerId for this block. This helps identify the owners
488 * of each namespace node. This is used in determining whether if
489 * certain external declarations cause redefinition errors.
491 Status = AcpiUtAllocateOwnerId (&OwnerId);
492 WalkState->OwnerId = OwnerId;
493 if (ACPI_FAILURE (Status))
495 AslCoreSubsystemError (Op, Status,
496 "Failure to allocate owner ID to this definition block.", FALSE);
497 return_ACPI_STATUS (Status);
502 * We are only interested in opcodes that have an associated name
503 * (or multiple names)
505 switch (Op->Asl.AmlOpcode)
507 case AML_BANK_FIELD_OP:
508 case AML_INDEX_FIELD_OP:
511 Status = LdLoadFieldElements (Op, WalkState);
514 case AML_INT_CONNECTION_OP:
517 if (Op->Asl.Child->Asl.AmlOpcode != AML_INT_NAMEPATH_OP)
523 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Asl.ExternalName,
524 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
526 if (ACPI_FAILURE (Status))
531 if (Node->Type == ACPI_TYPE_BUFFER)
533 Arg->Asl.Node = Node;
535 Arg = Node->Op->Asl.Child; /* Get namepath */
536 Arg = Arg->Asl.Next; /* Get actual buffer */
537 Arg = Arg->Asl.Child; /* Buffer length */
538 Arg = Arg->Asl.Next; /* RAW_DATA buffer */
544 /* All other opcodes go below */
549 /* Check if this object has already been installed in the namespace */
556 /* Check for a possible illegal forward reference */
558 if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
559 (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING))
562 * Op->Asl.Namepath will be NULL for these opcodes.
563 * These opcodes are guaranteed to have a parent.
564 * Examine the parent opcode.
567 ParentOp = Op->Asl.Parent;
568 OpInfo = AcpiPsGetOpcodeInfo (ParentOp->Asl.AmlOpcode);
571 * Exclude all operators that actually declare a new name:
572 * Name (ABCD, 1) -> Ignore (AML_CLASS_NAMED_OBJECT)
573 * We only want references to named objects:
574 * Store (2, WXYZ) -> Attempt to resolve the name
576 if (OpInfo->Class == AML_CLASS_NAMED_OBJECT)
582 * Check if the referenced object exists at this point during
584 * 1) If it exists, then this cannot be a forward reference.
585 * 2) If it does not exist, it could be a forward reference or
586 * it truly does not exist (and no external declaration).
588 Status = AcpiNsLookup (WalkState->ScopeInfo,
589 Op->Asl.Value.Name, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
590 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
592 if (Status == AE_NOT_FOUND)
595 * This is either a foward reference or the object truly
596 * does not exist. The two cases can only be differentiated
597 * during the cross-reference stage later. Mark the Op/Name
598 * as not-found for now to indicate the need for further
601 * Special case: Allow forward references from elements of
602 * Package objects. This provides compatibility with other
603 * ACPI implementations. To correctly implement this, the
604 * ACPICA table load defers package resolution until the entire
605 * namespace has been loaded.
607 if ((ParentOp->Asl.ParseOpcode != PARSEOP_PACKAGE) &&
608 (ParentOp->Asl.ParseOpcode != PARSEOP_VAR_PACKAGE))
610 Op->Asl.CompileFlags |= OP_NOT_FOUND_DURING_LOAD;
619 Path = Op->Asl.Namepath;
625 /* Map the raw opcode into an internal object type */
627 switch (Op->Asl.ParseOpcode)
631 Arg = Op->Asl.Child; /* Get the NameSeg/NameString node */
632 Arg = Arg->Asl.Next; /* First peer is the object to be associated with the name */
635 * If this name refers to a ResourceTemplate, we will need to open
636 * a new scope so that the resource subfield names can be entered into
637 * the namespace underneath this name
639 if (Op->Asl.CompileFlags & OP_IS_RESOURCE_DESC)
641 ForceNewScope = TRUE;
644 /* Get the data type associated with the named object, not the name itself */
646 /* Log2 loop to convert from Btype (binary) to Etype (encoded) */
649 for (i = 1; i < Arg->Asl.AcpiBtype; i *= 2)
655 case PARSEOP_EXTERNAL:
657 * "External" simply enters a name and type into the namespace.
658 * We must be careful to not open a new scope, however, no matter
659 * what type the external name refers to (e.g., a method)
661 * first child is name, next child is ObjectType
663 ActualObjectType = (UINT8) Op->Asl.Child->Asl.Next->Asl.Value.Integer;
664 ObjectType = ACPI_TYPE_ANY;
667 * We will mark every new node along the path as "External". This
668 * allows some or all of the nodes to be created later in the ASL
669 * code. Handles cases like this:
671 * External (\_SB_.PCI0.ABCD, IntObj)
680 * Store (\_SB_.PCI0.ABCD, Local0)
683 Flags |= ACPI_NS_EXTERNAL;
686 case PARSEOP_DEFAULT_ARG:
688 if (Op->Asl.CompileFlags == OP_IS_RESOURCE_DESC)
690 Status = LdLoadResourceElements (Op, WalkState);
691 return_ACPI_STATUS (Status);
694 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
699 * The name referenced by Scope(Name) must already exist at this point.
700 * In other words, forward references for Scope() are not supported.
701 * The only real reason for this is that the MS interpreter cannot
702 * handle this case. Perhaps someday this case can go away.
704 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY,
705 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
707 if (ACPI_FAILURE (Status))
709 if (Status == AE_NOT_FOUND)
711 /* The name was not found, go ahead and create it */
713 Status = AcpiNsLookup (WalkState->ScopeInfo, Path,
714 ACPI_TYPE_LOCAL_SCOPE,
715 ACPI_IMODE_LOAD_PASS1, Flags,
717 if (ACPI_FAILURE (Status))
719 return_ACPI_STATUS (Status);
723 * However, this is an error -- primarily because the MS
724 * interpreter can't handle a forward reference from the
727 AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op,
728 Op->Asl.ExternalName);
729 AslError (ASL_ERROR, ASL_MSG_SCOPE_FWD_REF, Op,
730 Op->Asl.ExternalName);
734 AslCoreSubsystemError (Op, Status,
735 "Failure from namespace lookup", FALSE);
737 return_ACPI_STATUS (Status);
739 else /* Status AE_OK */
742 * Do not allow references to external scopes from the DSDT.
743 * This is because the DSDT is always loaded first, and the
744 * external reference cannot be resolved -- causing a runtime
745 * error because Scope() must be resolved immediately.
748 if ((Node->Flags & ANOBJ_IS_EXTERNAL) &&
749 (ACPI_COMPARE_NAME (Gbl_TableSignature, "DSDT")))
751 /* However, allowed if the reference is within a method */
753 MethodOp = Op->Asl.Parent;
755 (MethodOp->Asl.ParseOpcode != PARSEOP_METHOD))
757 MethodOp = MethodOp->Asl.Parent;
762 /* Not in a control method, error */
764 AslError (ASL_ERROR, ASL_MSG_CROSS_TABLE_SCOPE, Op, NULL);
769 /* We found a node with this name, now check the type */
773 case ACPI_TYPE_LOCAL_SCOPE:
774 case ACPI_TYPE_DEVICE:
775 case ACPI_TYPE_POWER:
776 case ACPI_TYPE_PROCESSOR:
777 case ACPI_TYPE_THERMAL:
779 /* These are acceptable types - they all open a new scope */
782 case ACPI_TYPE_INTEGER:
783 case ACPI_TYPE_STRING:
784 case ACPI_TYPE_BUFFER:
786 * These types we will allow, but we will change the type.
787 * This enables some existing code of the form:
790 * Scope (DEB) { ... }
792 * Which is used to workaround the fact that the MS interpreter
793 * does not allow Scope() forward references.
795 sprintf (MsgBuffer, "%s [%s], changing type to [Scope]",
796 Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type));
797 AslError (ASL_REMARK, ASL_MSG_SCOPE_TYPE, Op, MsgBuffer);
799 /* Switch the type to scope, open the new scope */
801 Node->Type = ACPI_TYPE_LOCAL_SCOPE;
802 Status = AcpiDsScopeStackPush (Node, ACPI_TYPE_LOCAL_SCOPE,
804 if (ACPI_FAILURE (Status))
806 return_ACPI_STATUS (Status);
812 /* All other types are an error */
814 sprintf (MsgBuffer, "%s [%s]", Op->Asl.ExternalName,
815 AcpiUtGetTypeName (Node->Type));
816 AslError (ASL_ERROR, ASL_MSG_SCOPE_TYPE, Op, MsgBuffer);
819 * However, switch the type to be an actual scope so
820 * that compilation can continue without generating a whole
821 * cascade of additional errors. Open the new scope.
823 Node->Type = ACPI_TYPE_LOCAL_SCOPE;
824 Status = AcpiDsScopeStackPush (Node, ACPI_TYPE_LOCAL_SCOPE,
826 if (ACPI_FAILURE (Status))
828 return_ACPI_STATUS (Status);
838 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
843 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Loading name: %s, (%s)\n",
844 Op->Asl.ExternalName, AcpiUtGetTypeName (ObjectType)));
846 /* The name must not already exist */
848 Flags |= ACPI_NS_ERROR_IF_FOUND;
851 * Enter the named type into the internal namespace. We enter the name
852 * as we go downward in the parse tree. Any necessary subobjects that
853 * involve arguments to the opcode must be created as we go back up the
856 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
857 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node);
858 if (ACPI_FAILURE (Status))
860 if (Status == AE_ALREADY_EXISTS)
862 /* The name already exists in this scope */
864 if (Node->Type == ACPI_TYPE_LOCAL_SCOPE)
866 /* Allow multiple references to the same scope */
868 Node->Type = (UINT8) ObjectType;
871 else if ((Node->Flags & ANOBJ_IS_EXTERNAL) &&
872 (Op->Asl.ParseOpcode != PARSEOP_EXTERNAL))
875 * Allow one create on an object or segment that was
876 * previously declared External only if WalkState->OwnerId and
877 * Node->OwnerId are different (meaning that the current WalkState
878 * and the Node are in different tables).
880 Node->Flags &= ~ANOBJ_IS_EXTERNAL;
881 Node->Type = (UINT8) ObjectType;
883 /* Just retyped a node, probably will need to open a scope */
885 if (AcpiNsOpensScope (ObjectType))
887 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
888 if (ACPI_FAILURE (Status))
890 return_ACPI_STATUS (Status);
896 if (Node->OwnerId == WalkState->OwnerId &&
897 !(Node->Flags & IMPLICIT_EXTERNAL))
899 AslDualParseOpError (ASL_WARNING, ASL_MSG_EXTERN_COLLISION, Op,
900 Op->Asl.ExternalName, ASL_MSG_EXTERN_FOUND_HERE, Node->Op,
901 Node->Op->Asl.ExternalName);
903 if (Node->Flags & IMPLICIT_EXTERNAL)
905 Node->Flags &= ~IMPLICIT_EXTERNAL;
908 else if (!(Node->Flags & ANOBJ_IS_EXTERNAL) &&
909 (Op->Asl.ParseOpcode == PARSEOP_EXTERNAL))
912 * Allow externals in same scope as the definition of the
913 * actual object. Similar to C. Allows multiple definition
914 * blocks that refer to each other in the same file. However,
915 * do not allow name declaration and an external declaration
916 * within the same table. This is considered a re-declaration.
920 if (Node->OwnerId == WalkState->OwnerId)
922 AslDualParseOpError (ASL_WARNING, ASL_MSG_EXTERN_COLLISION, Op,
923 Op->Asl.ExternalName, ASL_MSG_EXTERN_FOUND_HERE, Node->Op,
924 Node->Op->Asl.ExternalName);
927 else if ((Node->Flags & ANOBJ_IS_EXTERNAL) &&
928 (Op->Asl.ParseOpcode == PARSEOP_EXTERNAL) &&
929 (ObjectType == ACPI_TYPE_ANY))
932 * Allow update of externals of unknown type.
933 * In the case that multiple definition blocks are being
934 * parsed, updating the OwnerId allows enables subsequent calls
935 * of this method to understand which table the most recent
936 * external declaration was seen. Without this OwnerId update,
937 * code like the following is allowed to compile:
939 * DefinitionBlock("externtest.aml", "DSDT", 0x02, "Intel", "Many", 0x00000001)
941 * External(ERRS,methodobj)
949 * DefinitionBlock("externtest.aml", "SSDT", 0x02, "Intel", "Many", 0x00000001)
953 * External(ERRS,methodobj)
960 Node->OwnerId = WalkState->OwnerId;
962 if (AcpiNsOpensScope (ActualObjectType))
964 Node->Type = (UINT8) ActualObjectType;
969 sprintf (MsgBuffer, "%s [%s]", Op->Asl.ExternalName,
970 AcpiUtGetTypeName (Node->Type));
971 AslError (ASL_ERROR, ASL_MSG_SCOPE_TYPE, Op, MsgBuffer);
972 return_ACPI_STATUS (AE_OK);
977 /* Valid error, object already exists */
979 AslDualParseOpError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Op,
980 Op->Asl.ExternalName, ASL_MSG_FOUND_HERE, Node->Op,
981 Node->Op->Asl.ExternalName);
982 return_ACPI_STATUS (AE_OK);
987 AslCoreSubsystemError (Op, Status,
988 "Failure from namespace lookup", FALSE);
989 return_ACPI_STATUS (Status);
995 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
996 if (ACPI_FAILURE (Status))
998 return_ACPI_STATUS (Status);
1004 * Point the parse node to the new namespace node, and point
1005 * the Node back to the original Parse node
1007 Op->Asl.Node = Node;
1010 /* Set the actual data type if appropriate (EXTERNAL term only) */
1012 if (ActualObjectType != ACPI_TYPE_ANY)
1014 Node->Type = (UINT8) ActualObjectType;
1015 Node->Value = ASL_EXTERNAL_METHOD;
1018 if (Op->Asl.ParseOpcode == PARSEOP_METHOD)
1021 * Get the method argument count from "Extra" and save
1022 * it in the namespace node
1024 Node->Value = (UINT32) Op->Asl.Extra;
1027 return_ACPI_STATUS (Status);
1031 /*******************************************************************************
1033 * FUNCTION: LdNamespace2Begin
1035 * PARAMETERS: ASL_WALK_CALLBACK
1039 * DESCRIPTION: Descending callback used during the pass 2 parse tree walk.
1040 * Second pass resolves some forward references.
1043 * Currently only needs to handle the Alias operator.
1044 * Could be used to allow forward references from the Scope() operator, but
1045 * the MS interpreter does not allow this, so this compiler does not either.
1047 ******************************************************************************/
1051 ACPI_PARSE_OBJECT *Op,
1055 ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context;
1057 ACPI_NAMESPACE_NODE *Node;
1058 ACPI_OBJECT_TYPE ObjectType;
1059 BOOLEAN ForceNewScope = FALSE;
1060 ACPI_PARSE_OBJECT *Arg;
1062 ACPI_NAMESPACE_NODE *TargetNode;
1065 ACPI_FUNCTION_NAME (LdNamespace2Begin);
1066 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op %p [%s]\n",
1067 Op, Op->Asl.ParseOpName));
1070 /* Ignore Ops with no namespace node */
1072 Node = Op->Asl.Node;
1078 /* Get the type to determine if we should push the scope */
1080 if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) &&
1081 (Op->Asl.CompileFlags == OP_IS_RESOURCE_DESC))
1083 ObjectType = ACPI_TYPE_LOCAL_RESOURCE;
1087 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
1090 /* Push scope for Resource Templates */
1092 if (Op->Asl.ParseOpcode == PARSEOP_NAME)
1094 if (Op->Asl.CompileFlags & OP_IS_RESOURCE_DESC)
1096 ForceNewScope = TRUE;
1100 /* Push the scope stack */
1102 if (ForceNewScope || AcpiNsOpensScope (ObjectType))
1104 Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
1105 if (ACPI_FAILURE (Status))
1107 return_ACPI_STATUS (Status);
1111 if (Op->Asl.ParseOpcode == PARSEOP_ALIAS)
1113 /* Complete the alias node by getting and saving the target node */
1115 /* First child is the alias target */
1117 Arg = Op->Asl.Child;
1119 /* Get the target pathname */
1121 Path = Arg->Asl.Namepath;
1124 Status = UtInternalizeName (Arg->Asl.ExternalName, &Path);
1125 if (ACPI_FAILURE (Status))
1131 /* Get the NS node associated with the target. It must exist. */
1133 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY,
1134 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
1135 WalkState, &TargetNode);
1136 if (ACPI_FAILURE (Status))
1138 if (Status == AE_NOT_FOUND)
1140 AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op,
1141 Op->Asl.ExternalName);
1144 * The name was not found, go ahead and create it.
1145 * This prevents more errors later.
1147 Status = AcpiNsLookup (WalkState->ScopeInfo, Path,
1149 ACPI_IMODE_LOAD_PASS1, ACPI_NS_NO_UPSEARCH,
1150 WalkState, &(Node));
1154 AslCoreSubsystemError (Op, Status,
1155 "Failure from namespace lookup", FALSE);
1159 /* Save the target node within the alias node */
1161 Node->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode);
1168 /*******************************************************************************
1170 * FUNCTION: LdCommonNamespaceEnd
1172 * PARAMETERS: ASL_WALK_CALLBACK
1176 * DESCRIPTION: Ascending callback used during the loading of the namespace,
1177 * We only need to worry about managing the scope stack here.
1179 ******************************************************************************/
1182 LdCommonNamespaceEnd (
1183 ACPI_PARSE_OBJECT *Op,
1187 ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context;
1188 ACPI_OBJECT_TYPE ObjectType;
1189 BOOLEAN ForceNewScope = FALSE;
1192 ACPI_FUNCTION_NAME (LdCommonNamespaceEnd);
1195 /* We are only interested in opcodes that have an associated name */
1197 if (!Op->Asl.Namepath)
1202 /* Get the type to determine if we should pop the scope */
1204 if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) &&
1205 (Op->Asl.CompileFlags == OP_IS_RESOURCE_DESC))
1207 /* TBD: Merge into AcpiDsMapNamedOpcodeToDataType */
1209 ObjectType = ACPI_TYPE_LOCAL_RESOURCE;
1213 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
1216 /* Pop scope that was pushed for Resource Templates */
1218 if (Op->Asl.ParseOpcode == PARSEOP_NAME)
1220 if (Op->Asl.CompileFlags & OP_IS_RESOURCE_DESC)
1222 ForceNewScope = TRUE;
1226 /* Pop the scope stack */
1228 if (ForceNewScope || AcpiNsOpensScope (ObjectType))
1230 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
1231 "(%s): Popping scope for Op [%s] %p\n",
1232 AcpiUtGetTypeName (ObjectType), Op->Asl.ParseOpName, Op));
1234 (void) AcpiDsScopeStackPop (WalkState);