1 /******************************************************************************
3 * Module Name: dsfield - Dispatcher field routines
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2019, 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 <contrib/dev/acpica/include/acpi.h>
153 #include <contrib/dev/acpica/include/accommon.h>
154 #include <contrib/dev/acpica/include/amlcode.h>
155 #include <contrib/dev/acpica/include/acdispat.h>
156 #include <contrib/dev/acpica/include/acinterp.h>
157 #include <contrib/dev/acpica/include/acnamesp.h>
158 #include <contrib/dev/acpica/include/acparser.h>
160 #if !defined(ACPI_DB_APP) && defined(ACPI_EXEC_APP)
161 #include "aecommon.h"
165 #define _COMPONENT ACPI_DISPATCHER
166 ACPI_MODULE_NAME ("dsfield")
168 /* Local prototypes */
170 #ifdef ACPI_ASL_COMPILER
171 #include <contrib/dev/acpica/include/acdisasm.h>
174 AcpiDsCreateExternalRegion (
175 ACPI_STATUS LookupStatus,
176 ACPI_PARSE_OBJECT *Op,
178 ACPI_WALK_STATE *WalkState,
179 ACPI_NAMESPACE_NODE **Node);
183 AcpiDsGetFieldNames (
184 ACPI_CREATE_FIELD_INFO *Info,
185 ACPI_WALK_STATE *WalkState,
186 ACPI_PARSE_OBJECT *Arg);
189 #ifdef ACPI_ASL_COMPILER
190 /*******************************************************************************
192 * FUNCTION: AcpiDsCreateExternalRegion (iASL Disassembler only)
194 * PARAMETERS: LookupStatus - Status from NsLookup operation
195 * Op - Op containing the Field definition and args
196 * Path - Pathname of the region
197 * ` WalkState - Current method state
198 * Node - Where the new region node is returned
202 * DESCRIPTION: Add region to the external list if NOT_FOUND. Create a new
203 * region node/object.
205 ******************************************************************************/
208 AcpiDsCreateExternalRegion (
209 ACPI_STATUS LookupStatus,
210 ACPI_PARSE_OBJECT *Op,
212 ACPI_WALK_STATE *WalkState,
213 ACPI_NAMESPACE_NODE **Node)
216 ACPI_OPERAND_OBJECT *ObjDesc;
219 if (LookupStatus != AE_NOT_FOUND)
221 return (LookupStatus);
226 * OperationRegion not found. Generate an External for it, and
227 * insert the name into the namespace.
229 AcpiDmAddOpToExternalList (Op, Path, ACPI_TYPE_REGION, 0, 0);
231 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_REGION,
232 ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT, WalkState, Node);
233 if (ACPI_FAILURE (Status))
238 /* Must create and install a region object for the new node */
240 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION);
243 return (AE_NO_MEMORY);
246 ObjDesc->Region.Node = *Node;
247 Status = AcpiNsAttachObject (*Node, ObjDesc, ACPI_TYPE_REGION);
253 /*******************************************************************************
255 * FUNCTION: AcpiDsCreateBufferField
257 * PARAMETERS: Op - Current parse op (CreateXXField)
258 * WalkState - Current state
262 * DESCRIPTION: Execute the CreateField operators:
266 * CreateDwordFieldOp,
267 * CreateQwordFieldOp,
268 * CreateFieldOp (all of which define a field in a buffer)
270 ******************************************************************************/
273 AcpiDsCreateBufferField (
274 ACPI_PARSE_OBJECT *Op,
275 ACPI_WALK_STATE *WalkState)
277 ACPI_PARSE_OBJECT *Arg;
278 ACPI_NAMESPACE_NODE *Node;
280 ACPI_OPERAND_OBJECT *ObjDesc;
281 ACPI_OPERAND_OBJECT *SecondDesc = NULL;
285 ACPI_FUNCTION_TRACE (DsCreateBufferField);
289 * Get the NameString argument (name of the new BufferField)
291 if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
293 /* For CreateField, name is the 4th argument */
295 Arg = AcpiPsGetArg (Op, 3);
299 /* For all other CreateXXXField operators, name is the 3rd argument */
301 Arg = AcpiPsGetArg (Op, 2);
306 return_ACPI_STATUS (AE_AML_NO_OPERAND);
309 if (WalkState->DeferredNode)
311 Node = WalkState->DeferredNode;
316 /* Execute flag should always be set when this function is entered */
318 if (!(WalkState->ParseFlags & ACPI_PARSE_EXECUTE))
320 ACPI_ERROR ((AE_INFO,
321 "Parse execute mode is not set"));
322 return_ACPI_STATUS (AE_AML_INTERNAL);
325 /* Creating new namespace node, should not already exist */
327 Flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
328 ACPI_NS_ERROR_IF_FOUND;
331 * Mark node temporary if we are executing a normal control
332 * method. (Don't mark if this is a module-level code method)
334 if (WalkState->MethodNode &&
335 !(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
337 Flags |= ACPI_NS_TEMPORARY;
340 /* Enter the NameString into the namespace */
342 Status = AcpiNsLookup (WalkState->ScopeInfo,
343 Arg->Common.Value.String, ACPI_TYPE_ANY,
344 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node);
345 if (ACPI_FAILURE (Status))
347 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
348 Arg->Common.Value.String, Status);
349 return_ACPI_STATUS (Status);
354 * We could put the returned object (Node) on the object stack for later,
355 * but for now, we will put it in the "op" object that the parser uses,
356 * so we can get it again at the end of this scope.
358 Op->Common.Node = Node;
361 * If there is no object attached to the node, this node was just created
362 * and we need to create the field object. Otherwise, this was a lookup
363 * of an existing node and we don't want to create the field object again.
365 ObjDesc = AcpiNsGetAttachedObject (Node);
368 return_ACPI_STATUS (AE_OK);
372 * The Field definition is not fully parsed at this time.
373 * (We must save the address of the AML for the buffer and index operands)
376 /* Create the buffer field object */
378 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER_FIELD);
381 Status = AE_NO_MEMORY;
386 * Remember location in AML stream of the field unit opcode and operands
387 * -- since the buffer and index operands must be evaluated.
389 SecondDesc = ObjDesc->Common.NextObject;
390 SecondDesc->Extra.AmlStart = Op->Named.Data;
391 SecondDesc->Extra.AmlLength = Op->Named.Length;
392 ObjDesc->BufferField.Node = Node;
394 /* Attach constructed field descriptors to parent node */
396 Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_BUFFER_FIELD);
397 if (ACPI_FAILURE (Status))
405 /* Remove local reference to the object */
407 AcpiUtRemoveReference (ObjDesc);
408 return_ACPI_STATUS (Status);
412 /*******************************************************************************
414 * FUNCTION: AcpiDsGetFieldNames
416 * PARAMETERS: Info - CreateField info structure
417 * ` WalkState - Current method state
418 * Arg - First parser arg for the field name list
422 * DESCRIPTION: Process all named fields in a field declaration. Names are
423 * entered into the namespace.
425 ******************************************************************************/
428 AcpiDsGetFieldNames (
429 ACPI_CREATE_FIELD_INFO *Info,
430 ACPI_WALK_STATE *WalkState,
431 ACPI_PARSE_OBJECT *Arg)
435 ACPI_PARSE_OBJECT *Child;
437 #if !defined(ACPI_DB_APP) && defined(ACPI_EXEC_APP)
439 ACPI_OPERAND_OBJECT *ResultDesc;
440 ACPI_OPERAND_OBJECT *ObjDesc;
445 ACPI_FUNCTION_TRACE_PTR (DsGetFieldNames, Info);
448 /* First field starts at bit zero */
450 Info->FieldBitPosition = 0;
452 /* Process all elements in the field list (of parse nodes) */
457 * Four types of field elements are handled:
458 * 1) Name - Enters a new named field into the namespace
459 * 2) Offset - specifies a bit offset
460 * 3) AccessAs - changes the access mode/attributes
461 * 4) Connection - Associate a resource template with the field
463 switch (Arg->Common.AmlOpcode)
465 case AML_INT_RESERVEDFIELD_OP:
467 Position = (UINT64) Info->FieldBitPosition +
468 (UINT64) Arg->Common.Value.Size;
470 if (Position > ACPI_UINT32_MAX)
472 ACPI_ERROR ((AE_INFO,
473 "Bit offset within field too large (> 0xFFFFFFFF)"));
474 return_ACPI_STATUS (AE_SUPPORT);
477 Info->FieldBitPosition = (UINT32) Position;
480 case AML_INT_ACCESSFIELD_OP:
481 case AML_INT_EXTACCESSFIELD_OP:
483 * Get new AccessType, AccessAttribute, and AccessLength fields
484 * -- to be used for all field units that follow, until the
485 * end-of-field or another AccessAs keyword is encountered.
486 * NOTE. These three bytes are encoded in the integer value
487 * of the parseop for convenience.
489 * In FieldFlags, preserve the flag bits other than the
493 /* AccessType (ByteAcc, WordAcc, etc.) */
495 Info->FieldFlags = (UINT8)
496 ((Info->FieldFlags & ~(AML_FIELD_ACCESS_TYPE_MASK)) |
497 ((UINT8) ((UINT32) (Arg->Common.Value.Integer & 0x07))));
499 /* AccessAttribute (AttribQuick, AttribByte, etc.) */
501 Info->Attribute = (UINT8)
502 ((Arg->Common.Value.Integer >> 8) & 0xFF);
504 /* AccessLength (for serial/buffer protocols) */
506 Info->AccessLength = (UINT8)
507 ((Arg->Common.Value.Integer >> 16) & 0xFF);
510 case AML_INT_CONNECTION_OP:
512 * Clear any previous connection. New connection is used for all
513 * fields that follow, similar to AccessAs
515 Info->ResourceBuffer = NULL;
516 Info->ConnectionNode = NULL;
517 Info->PinNumberIndex = 0;
520 * A Connection() is either an actual resource descriptor (buffer)
521 * or a named reference to a resource template
523 Child = Arg->Common.Value.Arg;
524 if (Child->Common.AmlOpcode == AML_INT_BYTELIST_OP)
526 Info->ResourceBuffer = Child->Named.Data;
527 Info->ResourceLength = (UINT16) Child->Named.Value.Integer;
531 /* Lookup the Connection() namepath, it should already exist */
533 Status = AcpiNsLookup (WalkState->ScopeInfo,
534 Child->Common.Value.Name, ACPI_TYPE_ANY,
535 ACPI_IMODE_EXECUTE, ACPI_NS_DONT_OPEN_SCOPE,
536 WalkState, &Info->ConnectionNode);
537 if (ACPI_FAILURE (Status))
539 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
540 Child->Common.Value.Name, Status);
541 return_ACPI_STATUS (Status);
546 case AML_INT_NAMEDFIELD_OP:
548 /* Lookup the name, it should already exist */
550 Status = AcpiNsLookup (WalkState->ScopeInfo,
551 (char *) &Arg->Named.Name, Info->FieldType,
552 ACPI_IMODE_EXECUTE, ACPI_NS_DONT_OPEN_SCOPE,
553 WalkState, &Info->FieldNode);
554 if (ACPI_FAILURE (Status))
556 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
557 (char *) &Arg->Named.Name, Status);
558 return_ACPI_STATUS (Status);
562 Arg->Common.Node = Info->FieldNode;
563 Info->FieldBitLength = Arg->Common.Value.Size;
566 * If there is no object attached to the node, this node was
567 * just created and we need to create the field object.
568 * Otherwise, this was a lookup of an existing node and we
569 * don't want to create the field object again.
571 if (!AcpiNsGetAttachedObject (Info->FieldNode))
573 Status = AcpiExPrepFieldValue (Info);
574 if (ACPI_FAILURE (Status))
576 return_ACPI_STATUS (Status);
578 #if !defined(ACPI_DB_APP) && defined(ACPI_EXEC_APP)
579 NamePath = AcpiNsGetExternalPathname (Info->FieldNode);
580 ObjDesc = AcpiUtCreateIntegerObject (Value);
581 if (ACPI_SUCCESS (AeLookupInitFileEntry (NamePath, &Value)))
583 AcpiExWriteDataToField (ObjDesc,
584 AcpiNsGetAttachedObject (Info->FieldNode),
587 AcpiUtRemoveReference (ObjDesc);
588 ACPI_FREE (NamePath);
593 /* Keep track of bit position for the next field */
595 Position = (UINT64) Info->FieldBitPosition +
596 (UINT64) Arg->Common.Value.Size;
598 if (Position > ACPI_UINT32_MAX)
600 ACPI_ERROR ((AE_INFO,
601 "Field [%4.4s] bit offset too large (> 0xFFFFFFFF)",
602 ACPI_CAST_PTR (char, &Info->FieldNode->Name)));
603 return_ACPI_STATUS (AE_SUPPORT);
606 Info->FieldBitPosition += Info->FieldBitLength;
607 Info->PinNumberIndex++; /* Index relative to previous Connection() */
612 ACPI_ERROR ((AE_INFO,
613 "Invalid opcode in field list: 0x%X",
614 Arg->Common.AmlOpcode));
615 return_ACPI_STATUS (AE_AML_BAD_OPCODE);
618 Arg = Arg->Common.Next;
621 return_ACPI_STATUS (AE_OK);
625 /*******************************************************************************
627 * FUNCTION: AcpiDsCreateField
629 * PARAMETERS: Op - Op containing the Field definition and args
630 * RegionNode - Object for the containing Operation Region
631 * ` WalkState - Current method state
635 * DESCRIPTION: Create a new field in the specified operation region
637 ******************************************************************************/
641 ACPI_PARSE_OBJECT *Op,
642 ACPI_NAMESPACE_NODE *RegionNode,
643 ACPI_WALK_STATE *WalkState)
646 ACPI_PARSE_OBJECT *Arg;
647 ACPI_CREATE_FIELD_INFO Info;
650 ACPI_FUNCTION_TRACE_PTR (DsCreateField, Op);
653 /* First arg is the name of the parent OpRegion (must already exist) */
655 Arg = Op->Common.Value.Arg;
659 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.Name,
660 ACPI_TYPE_REGION, ACPI_IMODE_EXECUTE,
661 ACPI_NS_SEARCH_PARENT, WalkState, &RegionNode);
662 #ifdef ACPI_ASL_COMPILER
663 Status = AcpiDsCreateExternalRegion (Status, Arg,
664 Arg->Common.Value.Name, WalkState, &RegionNode);
666 if (ACPI_FAILURE (Status))
668 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
669 Arg->Common.Value.Name, Status);
670 return_ACPI_STATUS (Status);
674 memset (&Info, 0, sizeof (ACPI_CREATE_FIELD_INFO));
676 /* Second arg is the field flags */
678 Arg = Arg->Common.Next;
679 Info.FieldFlags = (UINT8) Arg->Common.Value.Integer;
682 /* Each remaining arg is a Named Field */
684 Info.FieldType = ACPI_TYPE_LOCAL_REGION_FIELD;
685 Info.RegionNode = RegionNode;
687 Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next);
688 if (Info.RegionNode->Object->Region.SpaceId == ACPI_ADR_SPACE_PLATFORM_COMM &&
689 !(RegionNode->Object->Field.InternalPccBuffer
690 = ACPI_ALLOCATE_ZEROED(Info.RegionNode->Object->Region.Length)))
692 return_ACPI_STATUS (AE_NO_MEMORY);
694 return_ACPI_STATUS (Status);
698 /*******************************************************************************
700 * FUNCTION: AcpiDsInitFieldObjects
702 * PARAMETERS: Op - Op containing the Field definition and args
703 * ` WalkState - Current method state
707 * DESCRIPTION: For each "Field Unit" name in the argument list that is
708 * part of the field declaration, enter the name into the
711 ******************************************************************************/
714 AcpiDsInitFieldObjects (
715 ACPI_PARSE_OBJECT *Op,
716 ACPI_WALK_STATE *WalkState)
719 ACPI_PARSE_OBJECT *Arg = NULL;
720 ACPI_NAMESPACE_NODE *Node;
725 ACPI_FUNCTION_TRACE_PTR (DsInitFieldObjects, Op);
728 /* Execute flag should always be set when this function is entered */
730 if (!(WalkState->ParseFlags & ACPI_PARSE_EXECUTE))
732 if (WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP)
734 /* BankField Op is deferred, just return OK */
736 return_ACPI_STATUS (AE_OK);
739 ACPI_ERROR ((AE_INFO,
740 "Parse deferred mode is not set"));
741 return_ACPI_STATUS (AE_AML_INTERNAL);
745 * Get the FieldList argument for this opcode. This is the start of the
746 * list of field elements.
748 switch (WalkState->Opcode)
752 Arg = AcpiPsGetArg (Op, 2);
753 Type = ACPI_TYPE_LOCAL_REGION_FIELD;
756 case AML_BANK_FIELD_OP:
758 Arg = AcpiPsGetArg (Op, 4);
759 Type = ACPI_TYPE_LOCAL_BANK_FIELD;
762 case AML_INDEX_FIELD_OP:
764 Arg = AcpiPsGetArg (Op, 3);
765 Type = ACPI_TYPE_LOCAL_INDEX_FIELD;
770 return_ACPI_STATUS (AE_BAD_PARAMETER);
773 /* Creating new namespace node(s), should not already exist */
775 Flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
776 ACPI_NS_ERROR_IF_FOUND;
779 * Mark node(s) temporary if we are executing a normal control
780 * method. (Don't mark if this is a module-level code method)
782 if (WalkState->MethodNode &&
783 !(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
785 Flags |= ACPI_NS_TEMPORARY;
789 Flags |= ACPI_NS_OVERRIDE_IF_FOUND;
792 * Walk the list of entries in the FieldList
793 * Note: FieldList can be of zero length. In this case, Arg will be NULL.
798 * Ignore OFFSET/ACCESSAS/CONNECTION terms here; we are only interested
799 * in the field names in order to enter them into the namespace.
801 if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP)
803 Status = AcpiNsLookup (WalkState->ScopeInfo,
804 (char *) &Arg->Named.Name, Type, ACPI_IMODE_LOAD_PASS1,
805 Flags, WalkState, &Node);
806 if (ACPI_FAILURE (Status))
808 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
809 (char *) &Arg->Named.Name, Status);
810 if (Status != AE_ALREADY_EXISTS)
812 return_ACPI_STATUS (Status);
815 /* Name already exists, just ignore this error */
820 Arg->Common.Node = Node;
823 /* Get the next field element in the list */
825 Arg = Arg->Common.Next;
828 return_ACPI_STATUS (AE_OK);
832 /*******************************************************************************
834 * FUNCTION: AcpiDsCreateBankField
836 * PARAMETERS: Op - Op containing the Field definition and args
837 * RegionNode - Object for the containing Operation Region
838 * WalkState - Current method state
842 * DESCRIPTION: Create a new bank field in the specified operation region
844 ******************************************************************************/
847 AcpiDsCreateBankField (
848 ACPI_PARSE_OBJECT *Op,
849 ACPI_NAMESPACE_NODE *RegionNode,
850 ACPI_WALK_STATE *WalkState)
853 ACPI_PARSE_OBJECT *Arg;
854 ACPI_CREATE_FIELD_INFO Info;
857 ACPI_FUNCTION_TRACE_PTR (DsCreateBankField, Op);
860 /* First arg is the name of the parent OpRegion (must already exist) */
862 Arg = Op->Common.Value.Arg;
865 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.Name,
866 ACPI_TYPE_REGION, ACPI_IMODE_EXECUTE,
867 ACPI_NS_SEARCH_PARENT, WalkState, &RegionNode);
868 #ifdef ACPI_ASL_COMPILER
869 Status = AcpiDsCreateExternalRegion (Status, Arg,
870 Arg->Common.Value.Name, WalkState, &RegionNode);
872 if (ACPI_FAILURE (Status))
874 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
875 Arg->Common.Value.Name, Status);
876 return_ACPI_STATUS (Status);
880 /* Second arg is the Bank Register (Field) (must already exist) */
882 Arg = Arg->Common.Next;
883 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
884 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
885 ACPI_NS_SEARCH_PARENT, WalkState, &Info.RegisterNode);
886 if (ACPI_FAILURE (Status))
888 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
889 Arg->Common.Value.String, Status);
890 return_ACPI_STATUS (Status);
894 * Third arg is the BankValue
895 * This arg is a TermArg, not a constant
896 * It will be evaluated later, by AcpiDsEvalBankFieldOperands
898 Arg = Arg->Common.Next;
900 /* Fourth arg is the field flags */
902 Arg = Arg->Common.Next;
903 Info.FieldFlags = (UINT8) Arg->Common.Value.Integer;
905 /* Each remaining arg is a Named Field */
907 Info.FieldType = ACPI_TYPE_LOCAL_BANK_FIELD;
908 Info.RegionNode = RegionNode;
911 * Use Info.DataRegisterNode to store BankField Op
912 * It's safe because DataRegisterNode will never be used when create
913 * bank field \we store AmlStart and AmlLength in the BankField Op for
914 * late evaluation. Used in AcpiExPrepFieldValue(Info)
916 * TBD: Or, should we add a field in ACPI_CREATE_FIELD_INFO, like
919 Info.DataRegisterNode = (ACPI_NAMESPACE_NODE*) Op;
921 Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next);
922 return_ACPI_STATUS (Status);
926 /*******************************************************************************
928 * FUNCTION: AcpiDsCreateIndexField
930 * PARAMETERS: Op - Op containing the Field definition and args
931 * RegionNode - Object for the containing Operation Region
932 * ` WalkState - Current method state
936 * DESCRIPTION: Create a new index field in the specified operation region
938 ******************************************************************************/
941 AcpiDsCreateIndexField (
942 ACPI_PARSE_OBJECT *Op,
943 ACPI_NAMESPACE_NODE *RegionNode,
944 ACPI_WALK_STATE *WalkState)
947 ACPI_PARSE_OBJECT *Arg;
948 ACPI_CREATE_FIELD_INFO Info;
951 ACPI_FUNCTION_TRACE_PTR (DsCreateIndexField, Op);
954 /* First arg is the name of the Index register (must already exist) */
956 Arg = Op->Common.Value.Arg;
957 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
958 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
959 ACPI_NS_SEARCH_PARENT, WalkState, &Info.RegisterNode);
960 if (ACPI_FAILURE (Status))
962 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
963 Arg->Common.Value.String, Status);
964 return_ACPI_STATUS (Status);
967 /* Second arg is the data register (must already exist) */
969 Arg = Arg->Common.Next;
970 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
971 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
972 ACPI_NS_SEARCH_PARENT, WalkState, &Info.DataRegisterNode);
973 if (ACPI_FAILURE (Status))
975 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
976 Arg->Common.Value.String, Status);
977 return_ACPI_STATUS (Status);
980 /* Next arg is the field flags */
982 Arg = Arg->Common.Next;
983 Info.FieldFlags = (UINT8) Arg->Common.Value.Integer;
985 /* Each remaining arg is a Named Field */
987 Info.FieldType = ACPI_TYPE_LOCAL_INDEX_FIELD;
988 Info.RegionNode = RegionNode;
990 Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next);
991 return_ACPI_STATUS (Status);