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;
315 /* Execute flag should always be set when this function is entered */
317 if (!(WalkState->ParseFlags & ACPI_PARSE_EXECUTE))
319 ACPI_ERROR ((AE_INFO,
320 "Parse execute mode is not set"));
321 return_ACPI_STATUS (AE_AML_INTERNAL);
324 /* Creating new namespace node, should not already exist */
326 Flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
327 ACPI_NS_ERROR_IF_FOUND;
330 * Mark node temporary if we are executing a normal control
331 * method. (Don't mark if this is a module-level code method)
333 if (WalkState->MethodNode &&
334 !(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
336 Flags |= ACPI_NS_TEMPORARY;
339 /* Enter the NameString into the namespace */
341 Status = AcpiNsLookup (WalkState->ScopeInfo,
342 Arg->Common.Value.String, ACPI_TYPE_ANY,
343 ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node);
344 if (ACPI_FAILURE (Status))
346 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
347 Arg->Common.Value.String, Status);
348 return_ACPI_STATUS (Status);
353 * We could put the returned object (Node) on the object stack for later,
354 * but for now, we will put it in the "op" object that the parser uses,
355 * so we can get it again at the end of this scope.
357 Op->Common.Node = Node;
360 * If there is no object attached to the node, this node was just created
361 * and we need to create the field object. Otherwise, this was a lookup
362 * of an existing node and we don't want to create the field object again.
364 ObjDesc = AcpiNsGetAttachedObject (Node);
367 return_ACPI_STATUS (AE_OK);
371 * The Field definition is not fully parsed at this time.
372 * (We must save the address of the AML for the buffer and index operands)
375 /* Create the buffer field object */
377 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER_FIELD);
380 Status = AE_NO_MEMORY;
385 * Remember location in AML stream of the field unit opcode and operands
386 * -- since the buffer and index operands must be evaluated.
388 SecondDesc = ObjDesc->Common.NextObject;
389 SecondDesc->Extra.AmlStart = Op->Named.Data;
390 SecondDesc->Extra.AmlLength = Op->Named.Length;
391 ObjDesc->BufferField.Node = Node;
393 /* Attach constructed field descriptors to parent node */
395 Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_BUFFER_FIELD);
396 if (ACPI_FAILURE (Status))
404 /* Remove local reference to the object */
406 AcpiUtRemoveReference (ObjDesc);
407 return_ACPI_STATUS (Status);
411 /*******************************************************************************
413 * FUNCTION: AcpiDsGetFieldNames
415 * PARAMETERS: Info - CreateField info structure
416 * WalkState - Current method state
417 * Arg - First parser arg for the field name list
421 * DESCRIPTION: Process all named fields in a field declaration. Names are
422 * entered into the namespace.
424 ******************************************************************************/
427 AcpiDsGetFieldNames (
428 ACPI_CREATE_FIELD_INFO *Info,
429 ACPI_WALK_STATE *WalkState,
430 ACPI_PARSE_OBJECT *Arg)
434 ACPI_PARSE_OBJECT *Child;
436 #if !defined(ACPI_DB_APP) && defined(ACPI_EXEC_APP)
437 ACPI_OPERAND_OBJECT *ResultDesc;
438 ACPI_OPERAND_OBJECT *ObjDesc;
443 ACPI_FUNCTION_TRACE_PTR (DsGetFieldNames, Info);
446 /* First field starts at bit zero */
448 Info->FieldBitPosition = 0;
450 /* Process all elements in the field list (of parse nodes) */
455 * Four types of field elements are handled:
456 * 1) Name - Enters a new named field into the namespace
457 * 2) Offset - specifies a bit offset
458 * 3) AccessAs - changes the access mode/attributes
459 * 4) Connection - Associate a resource template with the field
461 switch (Arg->Common.AmlOpcode)
463 case AML_INT_RESERVEDFIELD_OP:
465 Position = (UINT64) Info->FieldBitPosition +
466 (UINT64) Arg->Common.Value.Size;
468 if (Position > ACPI_UINT32_MAX)
470 ACPI_ERROR ((AE_INFO,
471 "Bit offset within field too large (> 0xFFFFFFFF)"));
472 return_ACPI_STATUS (AE_SUPPORT);
475 Info->FieldBitPosition = (UINT32) Position;
478 case AML_INT_ACCESSFIELD_OP:
479 case AML_INT_EXTACCESSFIELD_OP:
481 * Get new AccessType, AccessAttribute, and AccessLength fields
482 * -- to be used for all field units that follow, until the
483 * end-of-field or another AccessAs keyword is encountered.
484 * NOTE. These three bytes are encoded in the integer value
485 * of the parseop for convenience.
487 * In FieldFlags, preserve the flag bits other than the
491 /* AccessType (ByteAcc, WordAcc, etc.) */
493 Info->FieldFlags = (UINT8)
494 ((Info->FieldFlags & ~(AML_FIELD_ACCESS_TYPE_MASK)) |
495 ((UINT8) ((UINT32) (Arg->Common.Value.Integer & 0x07))));
497 /* AccessAttribute (AttribQuick, AttribByte, etc.) */
499 Info->Attribute = (UINT8)
500 ((Arg->Common.Value.Integer >> 8) & 0xFF);
502 /* AccessLength (for serial/buffer protocols) */
504 Info->AccessLength = (UINT8)
505 ((Arg->Common.Value.Integer >> 16) & 0xFF);
508 case AML_INT_CONNECTION_OP:
510 * Clear any previous connection. New connection is used for all
511 * fields that follow, similar to AccessAs
513 Info->ResourceBuffer = NULL;
514 Info->ConnectionNode = NULL;
515 Info->PinNumberIndex = 0;
518 * A Connection() is either an actual resource descriptor (buffer)
519 * or a named reference to a resource template
521 Child = Arg->Common.Value.Arg;
522 if (Child->Common.AmlOpcode == AML_INT_BYTELIST_OP)
524 Info->ResourceBuffer = Child->Named.Data;
525 Info->ResourceLength = (UINT16) Child->Named.Value.Integer;
529 /* Lookup the Connection() namepath, it should already exist */
531 Status = AcpiNsLookup (WalkState->ScopeInfo,
532 Child->Common.Value.Name, ACPI_TYPE_ANY,
533 ACPI_IMODE_EXECUTE, ACPI_NS_DONT_OPEN_SCOPE,
534 WalkState, &Info->ConnectionNode);
535 if (ACPI_FAILURE (Status))
537 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
538 Child->Common.Value.Name, Status);
539 return_ACPI_STATUS (Status);
544 case AML_INT_NAMEDFIELD_OP:
546 /* Lookup the name, it should already exist */
548 Status = AcpiNsLookup (WalkState->ScopeInfo,
549 (char *) &Arg->Named.Name, Info->FieldType,
550 ACPI_IMODE_EXECUTE, ACPI_NS_DONT_OPEN_SCOPE,
551 WalkState, &Info->FieldNode);
552 if (ACPI_FAILURE (Status))
554 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
555 (char *) &Arg->Named.Name, Status);
556 return_ACPI_STATUS (Status);
560 Arg->Common.Node = Info->FieldNode;
561 Info->FieldBitLength = Arg->Common.Value.Size;
564 * If there is no object attached to the node, this node was
565 * just created and we need to create the field object.
566 * Otherwise, this was a lookup of an existing node and we
567 * don't want to create the field object again.
569 if (!AcpiNsGetAttachedObject (Info->FieldNode))
571 Status = AcpiExPrepFieldValue (Info);
572 if (ACPI_FAILURE (Status))
574 return_ACPI_STATUS (Status);
576 #if !defined(ACPI_DB_APP) && defined(ACPI_EXEC_APP)
577 NamePath = AcpiNsGetExternalPathname (Info->FieldNode);
578 if (ACPI_SUCCESS (AeLookupInitFileEntry (NamePath, &ObjDesc)))
580 AcpiExWriteDataToField (ObjDesc,
581 AcpiNsGetAttachedObject (Info->FieldNode),
583 AcpiUtRemoveReference (ObjDesc);
585 ACPI_FREE (NamePath);
590 /* Keep track of bit position for the next field */
592 Position = (UINT64) Info->FieldBitPosition +
593 (UINT64) Arg->Common.Value.Size;
595 if (Position > ACPI_UINT32_MAX)
597 ACPI_ERROR ((AE_INFO,
598 "Field [%4.4s] bit offset too large (> 0xFFFFFFFF)",
599 ACPI_CAST_PTR (char, &Info->FieldNode->Name)));
600 return_ACPI_STATUS (AE_SUPPORT);
603 Info->FieldBitPosition += Info->FieldBitLength;
604 Info->PinNumberIndex++; /* Index relative to previous Connection() */
609 ACPI_ERROR ((AE_INFO,
610 "Invalid opcode in field list: 0x%X",
611 Arg->Common.AmlOpcode));
612 return_ACPI_STATUS (AE_AML_BAD_OPCODE);
615 Arg = Arg->Common.Next;
618 return_ACPI_STATUS (AE_OK);
622 /*******************************************************************************
624 * FUNCTION: AcpiDsCreateField
626 * PARAMETERS: Op - Op containing the Field definition and args
627 * RegionNode - Object for the containing Operation Region
628 * ` WalkState - Current method state
632 * DESCRIPTION: Create a new field in the specified operation region
634 ******************************************************************************/
638 ACPI_PARSE_OBJECT *Op,
639 ACPI_NAMESPACE_NODE *RegionNode,
640 ACPI_WALK_STATE *WalkState)
643 ACPI_PARSE_OBJECT *Arg;
644 ACPI_CREATE_FIELD_INFO Info;
647 ACPI_FUNCTION_TRACE_PTR (DsCreateField, Op);
650 /* First arg is the name of the parent OpRegion (must already exist) */
652 Arg = Op->Common.Value.Arg;
656 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.Name,
657 ACPI_TYPE_REGION, ACPI_IMODE_EXECUTE,
658 ACPI_NS_SEARCH_PARENT, WalkState, &RegionNode);
659 #ifdef ACPI_ASL_COMPILER
660 Status = AcpiDsCreateExternalRegion (Status, Arg,
661 Arg->Common.Value.Name, WalkState, &RegionNode);
663 if (ACPI_FAILURE (Status))
665 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
666 Arg->Common.Value.Name, Status);
667 return_ACPI_STATUS (Status);
671 memset (&Info, 0, sizeof (ACPI_CREATE_FIELD_INFO));
673 /* Second arg is the field flags */
675 Arg = Arg->Common.Next;
676 Info.FieldFlags = (UINT8) Arg->Common.Value.Integer;
679 /* Each remaining arg is a Named Field */
681 Info.FieldType = ACPI_TYPE_LOCAL_REGION_FIELD;
682 Info.RegionNode = RegionNode;
684 Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next);
685 if (Info.RegionNode->Object->Region.SpaceId == ACPI_ADR_SPACE_PLATFORM_COMM &&
686 !(RegionNode->Object->Field.InternalPccBuffer
687 = ACPI_ALLOCATE_ZEROED(Info.RegionNode->Object->Region.Length)))
689 return_ACPI_STATUS (AE_NO_MEMORY);
691 return_ACPI_STATUS (Status);
695 /*******************************************************************************
697 * FUNCTION: AcpiDsInitFieldObjects
699 * PARAMETERS: Op - Op containing the Field definition and args
700 * ` WalkState - Current method state
704 * DESCRIPTION: For each "Field Unit" name in the argument list that is
705 * part of the field declaration, enter the name into the
708 ******************************************************************************/
711 AcpiDsInitFieldObjects (
712 ACPI_PARSE_OBJECT *Op,
713 ACPI_WALK_STATE *WalkState)
716 ACPI_PARSE_OBJECT *Arg = NULL;
717 ACPI_NAMESPACE_NODE *Node;
722 ACPI_FUNCTION_TRACE_PTR (DsInitFieldObjects, Op);
725 /* Execute flag should always be set when this function is entered */
727 if (!(WalkState->ParseFlags & ACPI_PARSE_EXECUTE))
729 if (WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP)
731 /* BankField Op is deferred, just return OK */
733 return_ACPI_STATUS (AE_OK);
736 ACPI_ERROR ((AE_INFO,
737 "Parse deferred mode is not set"));
738 return_ACPI_STATUS (AE_AML_INTERNAL);
742 * Get the FieldList argument for this opcode. This is the start of the
743 * list of field elements.
745 switch (WalkState->Opcode)
749 Arg = AcpiPsGetArg (Op, 2);
750 Type = ACPI_TYPE_LOCAL_REGION_FIELD;
753 case AML_BANK_FIELD_OP:
755 Arg = AcpiPsGetArg (Op, 4);
756 Type = ACPI_TYPE_LOCAL_BANK_FIELD;
759 case AML_INDEX_FIELD_OP:
761 Arg = AcpiPsGetArg (Op, 3);
762 Type = ACPI_TYPE_LOCAL_INDEX_FIELD;
767 return_ACPI_STATUS (AE_BAD_PARAMETER);
770 /* Creating new namespace node(s), should not already exist */
772 Flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
773 ACPI_NS_ERROR_IF_FOUND;
776 * Mark node(s) temporary if we are executing a normal control
777 * method. (Don't mark if this is a module-level code method)
779 if (WalkState->MethodNode &&
780 !(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
782 Flags |= ACPI_NS_TEMPORARY;
786 Flags |= ACPI_NS_OVERRIDE_IF_FOUND;
789 * Walk the list of entries in the FieldList
790 * Note: FieldList can be of zero length. In this case, Arg will be NULL.
795 * Ignore OFFSET/ACCESSAS/CONNECTION terms here; we are only interested
796 * in the field names in order to enter them into the namespace.
798 if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP)
800 Status = AcpiNsLookup (WalkState->ScopeInfo,
801 (char *) &Arg->Named.Name, Type, ACPI_IMODE_LOAD_PASS1,
802 Flags, WalkState, &Node);
803 if (ACPI_FAILURE (Status))
805 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
806 (char *) &Arg->Named.Name, Status);
807 if (Status != AE_ALREADY_EXISTS)
809 return_ACPI_STATUS (Status);
812 /* Name already exists, just ignore this error */
815 Arg->Common.Node = Node;
818 /* Get the next field element in the list */
820 Arg = Arg->Common.Next;
823 return_ACPI_STATUS (AE_OK);
827 /*******************************************************************************
829 * FUNCTION: AcpiDsCreateBankField
831 * PARAMETERS: Op - Op containing the Field definition and args
832 * RegionNode - Object for the containing Operation Region
833 * WalkState - Current method state
837 * DESCRIPTION: Create a new bank field in the specified operation region
839 ******************************************************************************/
842 AcpiDsCreateBankField (
843 ACPI_PARSE_OBJECT *Op,
844 ACPI_NAMESPACE_NODE *RegionNode,
845 ACPI_WALK_STATE *WalkState)
848 ACPI_PARSE_OBJECT *Arg;
849 ACPI_CREATE_FIELD_INFO Info;
852 ACPI_FUNCTION_TRACE_PTR (DsCreateBankField, Op);
855 /* First arg is the name of the parent OpRegion (must already exist) */
857 Arg = Op->Common.Value.Arg;
860 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.Name,
861 ACPI_TYPE_REGION, ACPI_IMODE_EXECUTE,
862 ACPI_NS_SEARCH_PARENT, WalkState, &RegionNode);
863 #ifdef ACPI_ASL_COMPILER
864 Status = AcpiDsCreateExternalRegion (Status, Arg,
865 Arg->Common.Value.Name, WalkState, &RegionNode);
867 if (ACPI_FAILURE (Status))
869 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
870 Arg->Common.Value.Name, Status);
871 return_ACPI_STATUS (Status);
875 /* Second arg is the Bank Register (Field) (must already exist) */
877 Arg = Arg->Common.Next;
878 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
879 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
880 ACPI_NS_SEARCH_PARENT, WalkState, &Info.RegisterNode);
881 if (ACPI_FAILURE (Status))
883 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
884 Arg->Common.Value.String, Status);
885 return_ACPI_STATUS (Status);
889 * Third arg is the BankValue
890 * This arg is a TermArg, not a constant
891 * It will be evaluated later, by AcpiDsEvalBankFieldOperands
893 Arg = Arg->Common.Next;
895 /* Fourth arg is the field flags */
897 Arg = Arg->Common.Next;
898 Info.FieldFlags = (UINT8) Arg->Common.Value.Integer;
900 /* Each remaining arg is a Named Field */
902 Info.FieldType = ACPI_TYPE_LOCAL_BANK_FIELD;
903 Info.RegionNode = RegionNode;
906 * Use Info.DataRegisterNode to store BankField Op
907 * It's safe because DataRegisterNode will never be used when create
908 * bank field \we store AmlStart and AmlLength in the BankField Op for
909 * late evaluation. Used in AcpiExPrepFieldValue(Info)
911 * TBD: Or, should we add a field in ACPI_CREATE_FIELD_INFO, like
914 Info.DataRegisterNode = (ACPI_NAMESPACE_NODE*) Op;
916 Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next);
917 return_ACPI_STATUS (Status);
921 /*******************************************************************************
923 * FUNCTION: AcpiDsCreateIndexField
925 * PARAMETERS: Op - Op containing the Field definition and args
926 * RegionNode - Object for the containing Operation Region
927 * ` WalkState - Current method state
931 * DESCRIPTION: Create a new index field in the specified operation region
933 ******************************************************************************/
936 AcpiDsCreateIndexField (
937 ACPI_PARSE_OBJECT *Op,
938 ACPI_NAMESPACE_NODE *RegionNode,
939 ACPI_WALK_STATE *WalkState)
942 ACPI_PARSE_OBJECT *Arg;
943 ACPI_CREATE_FIELD_INFO Info;
946 ACPI_FUNCTION_TRACE_PTR (DsCreateIndexField, Op);
949 /* First arg is the name of the Index register (must already exist) */
951 Arg = Op->Common.Value.Arg;
952 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
953 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
954 ACPI_NS_SEARCH_PARENT, WalkState, &Info.RegisterNode);
955 if (ACPI_FAILURE (Status))
957 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
958 Arg->Common.Value.String, Status);
959 return_ACPI_STATUS (Status);
962 /* Second arg is the data register (must already exist) */
964 Arg = Arg->Common.Next;
965 Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
966 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
967 ACPI_NS_SEARCH_PARENT, WalkState, &Info.DataRegisterNode);
968 if (ACPI_FAILURE (Status))
970 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
971 Arg->Common.Value.String, Status);
972 return_ACPI_STATUS (Status);
975 /* Next arg is the field flags */
977 Arg = Arg->Common.Next;
978 Info.FieldFlags = (UINT8) Arg->Common.Value.Integer;
980 /* Each remaining arg is a Named Field */
982 Info.FieldType = ACPI_TYPE_LOCAL_INDEX_FIELD;
983 Info.RegionNode = RegionNode;
985 Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next);
986 return_ACPI_STATUS (Status);