1 /******************************************************************************
3 * Module Name: exprep - ACPI AML (p-code) execution - field prep utilities
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2015, 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 *****************************************************************************/
117 #include "accommon.h"
118 #include "acinterp.h"
120 #include "acnamesp.h"
121 #include "acdispat.h"
124 #define _COMPONENT ACPI_EXECUTER
125 ACPI_MODULE_NAME ("exprep")
127 /* Local prototypes */
130 AcpiExDecodeFieldAccess (
131 ACPI_OPERAND_OBJECT *ObjDesc,
133 UINT32 *ReturnByteAlignment);
136 #ifdef ACPI_UNDER_DEVELOPMENT
139 AcpiExGenerateAccess (
140 UINT32 FieldBitOffset,
141 UINT32 FieldBitLength,
142 UINT32 RegionLength);
144 /*******************************************************************************
146 * FUNCTION: AcpiExGenerateAccess
148 * PARAMETERS: FieldBitOffset - Start of field within parent region/buffer
149 * FieldBitLength - Length of field in bits
150 * RegionLength - Length of parent in bytes
152 * RETURN: Field granularity (8, 16, 32 or 64) and
153 * ByteAlignment (1, 2, 3, or 4)
155 * DESCRIPTION: Generate an optimal access width for fields defined with the
158 * NOTE: Need to have the RegionLength in order to check for boundary
159 * conditions (end-of-region). However, the RegionLength is a deferred
160 * operation. Therefore, to complete this implementation, the generation
161 * of this access width must be deferred until the region length has
164 ******************************************************************************/
167 AcpiExGenerateAccess (
168 UINT32 FieldBitOffset,
169 UINT32 FieldBitLength,
172 UINT32 FieldByteLength;
173 UINT32 FieldByteOffset;
174 UINT32 FieldByteEndOffset;
175 UINT32 AccessByteWidth;
176 UINT32 FieldStartOffset;
177 UINT32 FieldEndOffset;
178 UINT32 MinimumAccessWidth = 0xFFFFFFFF;
179 UINT32 MinimumAccesses = 0xFFFFFFFF;
183 ACPI_FUNCTION_TRACE (ExGenerateAccess);
186 /* Round Field start offset and length to "minimal" byte boundaries */
188 FieldByteOffset = ACPI_DIV_8 (ACPI_ROUND_DOWN (FieldBitOffset, 8));
189 FieldByteEndOffset = ACPI_DIV_8 (ACPI_ROUND_UP (FieldBitLength +
191 FieldByteLength = FieldByteEndOffset - FieldByteOffset;
193 ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
194 "Bit length %u, Bit offset %u\n",
195 FieldBitLength, FieldBitOffset));
197 ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
198 "Byte Length %u, Byte Offset %u, End Offset %u\n",
199 FieldByteLength, FieldByteOffset, FieldByteEndOffset));
202 * Iterative search for the maximum access width that is both aligned
203 * and does not go beyond the end of the region
205 * Start at ByteAcc and work upwards to QwordAcc max. (1,2,4,8 bytes)
207 for (AccessByteWidth = 1; AccessByteWidth <= 8; AccessByteWidth <<= 1)
210 * 1) Round end offset up to next access boundary and make sure that
211 * this does not go beyond the end of the parent region.
212 * 2) When the Access width is greater than the FieldByteLength, we
213 * are done. (This does not optimize for the perfectly aligned
216 if (ACPI_ROUND_UP (FieldByteEndOffset, AccessByteWidth) <= RegionLength)
219 ACPI_ROUND_DOWN (FieldByteOffset, AccessByteWidth) /
223 ACPI_ROUND_UP ((FieldByteLength + FieldByteOffset),
224 AccessByteWidth) / AccessByteWidth;
226 Accesses = FieldEndOffset - FieldStartOffset;
228 ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
229 "AccessWidth %u end is within region\n", AccessByteWidth));
231 ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
232 "Field Start %u, Field End %u -- requires %u accesses\n",
233 FieldStartOffset, FieldEndOffset, Accesses));
235 /* Single access is optimal */
239 ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
240 "Entire field can be accessed with one operation of size %u\n",
242 return_VALUE (AccessByteWidth);
246 * Fits in the region, but requires more than one read/write.
247 * try the next wider access on next iteration
249 if (Accesses < MinimumAccesses)
251 MinimumAccesses = Accesses;
252 MinimumAccessWidth = AccessByteWidth;
257 ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
258 "AccessWidth %u end is NOT within region\n", AccessByteWidth));
259 if (AccessByteWidth == 1)
261 ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
262 "Field goes beyond end-of-region!\n"));
264 /* Field does not fit in the region at all */
270 * This width goes beyond the end-of-region, back off to
273 ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
274 "Backing off to previous optimal access width of %u\n",
275 MinimumAccessWidth));
276 return_VALUE (MinimumAccessWidth);
281 * Could not read/write field with one operation,
282 * just use max access width
284 ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
285 "Cannot access field in one operation, using width 8\n"));
288 #endif /* ACPI_UNDER_DEVELOPMENT */
291 /*******************************************************************************
293 * FUNCTION: AcpiExDecodeFieldAccess
295 * PARAMETERS: ObjDesc - Field object
296 * FieldFlags - Encoded fieldflags (contains access bits)
297 * ReturnByteAlignment - Where the byte alignment is returned
299 * RETURN: Field granularity (8, 16, 32 or 64) and
300 * ByteAlignment (1, 2, 3, or 4)
302 * DESCRIPTION: Decode the AccessType bits of a field definition.
304 ******************************************************************************/
307 AcpiExDecodeFieldAccess (
308 ACPI_OPERAND_OBJECT *ObjDesc,
310 UINT32 *ReturnByteAlignment)
313 UINT32 ByteAlignment;
317 ACPI_FUNCTION_TRACE (ExDecodeFieldAccess);
320 Access = (FieldFlags & AML_FIELD_ACCESS_TYPE_MASK);
324 case AML_FIELD_ACCESS_ANY:
326 #ifdef ACPI_UNDER_DEVELOPMENT
328 AcpiExGenerateAccess (ObjDesc->CommonField.StartFieldBitOffset,
329 ObjDesc->CommonField.BitLength,
330 0xFFFFFFFF /* Temp until we pass RegionLength as parameter */);
331 BitLength = ByteAlignment * 8;
338 case AML_FIELD_ACCESS_BYTE:
339 case AML_FIELD_ACCESS_BUFFER: /* ACPI 2.0 (SMBus Buffer) */
345 case AML_FIELD_ACCESS_WORD:
351 case AML_FIELD_ACCESS_DWORD:
357 case AML_FIELD_ACCESS_QWORD: /* ACPI 2.0 */
365 /* Invalid field access type */
367 ACPI_ERROR ((AE_INFO,
368 "Unknown field access type 0x%X",
373 if (ObjDesc->Common.Type == ACPI_TYPE_BUFFER_FIELD)
376 * BufferField access can be on any byte boundary, so the
377 * ByteAlignment is always 1 byte -- regardless of any ByteAlignment
378 * implied by the field access type.
383 *ReturnByteAlignment = ByteAlignment;
384 return_UINT32 (BitLength);
388 /*******************************************************************************
390 * FUNCTION: AcpiExPrepCommonFieldObject
392 * PARAMETERS: ObjDesc - The field object
393 * FieldFlags - Access, LockRule, and UpdateRule.
394 * The format of a FieldFlag is described
395 * in the ACPI specification
396 * FieldAttribute - Special attributes (not used)
397 * FieldBitPosition - Field start position
398 * FieldBitLength - Field length in number of bits
402 * DESCRIPTION: Initialize the areas of the field object that are common
403 * to the various types of fields. Note: This is very "sensitive"
404 * code because we are solving the general case for field
407 ******************************************************************************/
410 AcpiExPrepCommonFieldObject (
411 ACPI_OPERAND_OBJECT *ObjDesc,
413 UINT8 FieldAttribute,
414 UINT32 FieldBitPosition,
415 UINT32 FieldBitLength)
417 UINT32 AccessBitWidth;
418 UINT32 ByteAlignment;
419 UINT32 NearestByteAddress;
422 ACPI_FUNCTION_TRACE (ExPrepCommonFieldObject);
426 * Note: the structure being initialized is the
427 * ACPI_COMMON_FIELD_INFO; No structure fields outside of the common
428 * area are initialized by this procedure.
430 ObjDesc->CommonField.FieldFlags = FieldFlags;
431 ObjDesc->CommonField.Attribute = FieldAttribute;
432 ObjDesc->CommonField.BitLength = FieldBitLength;
435 * Decode the access type so we can compute offsets. The access type gives
436 * two pieces of information - the width of each field access and the
437 * necessary ByteAlignment (address granularity) of the access.
439 * For AnyAcc, the AccessBitWidth is the largest width that is both
440 * necessary and possible in an attempt to access the whole field in one
441 * I/O operation. However, for AnyAcc, the ByteAlignment is always one
444 * For all Buffer Fields, the ByteAlignment is always one byte.
446 * For all other access types (Byte, Word, Dword, Qword), the Bitwidth is
447 * the same (equivalent) as the ByteAlignment.
449 AccessBitWidth = AcpiExDecodeFieldAccess (ObjDesc, FieldFlags,
453 return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
456 /* Setup width (access granularity) fields (values are: 1, 2, 4, 8) */
458 ObjDesc->CommonField.AccessByteWidth = (UINT8)
459 ACPI_DIV_8 (AccessBitWidth);
462 * BaseByteOffset is the address of the start of the field within the
463 * region. It is the byte address of the first *datum* (field-width data
464 * unit) of the field. (i.e., the first datum that contains at least the
465 * first *bit* of the field.)
467 * Note: ByteAlignment is always either equal to the AccessBitWidth or 8
468 * (Byte access), and it defines the addressing granularity of the parent
472 ACPI_ROUND_BITS_DOWN_TO_BYTES (FieldBitPosition);
473 ObjDesc->CommonField.BaseByteOffset = (UINT32)
474 ACPI_ROUND_DOWN (NearestByteAddress, ByteAlignment);
477 * StartFieldBitOffset is the offset of the first bit of the field within
480 ObjDesc->CommonField.StartFieldBitOffset = (UINT8)
481 (FieldBitPosition - ACPI_MUL_8 (ObjDesc->CommonField.BaseByteOffset));
483 return_ACPI_STATUS (AE_OK);
487 /*******************************************************************************
489 * FUNCTION: AcpiExPrepFieldValue
491 * PARAMETERS: Info - Contains all field creation info
495 * DESCRIPTION: Construct an object of type ACPI_OPERAND_OBJECT with a
496 * subtype of DefField and connect it to the parent Node.
498 ******************************************************************************/
501 AcpiExPrepFieldValue (
502 ACPI_CREATE_FIELD_INFO *Info)
504 ACPI_OPERAND_OBJECT *ObjDesc;
505 ACPI_OPERAND_OBJECT *SecondDesc = NULL;
507 UINT32 AccessByteWidth;
511 ACPI_FUNCTION_TRACE (ExPrepFieldValue);
514 /* Parameter validation */
516 if (Info->FieldType != ACPI_TYPE_LOCAL_INDEX_FIELD)
518 if (!Info->RegionNode)
520 ACPI_ERROR ((AE_INFO, "Null RegionNode"));
521 return_ACPI_STATUS (AE_AML_NO_OPERAND);
524 Type = AcpiNsGetType (Info->RegionNode);
525 if (Type != ACPI_TYPE_REGION)
527 ACPI_ERROR ((AE_INFO, "Needed Region, found type 0x%X (%s)",
528 Type, AcpiUtGetTypeName (Type)));
530 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
534 /* Allocate a new field object */
536 ObjDesc = AcpiUtCreateInternalObject (Info->FieldType);
539 return_ACPI_STATUS (AE_NO_MEMORY);
542 /* Initialize areas of the object that are common to all fields */
544 ObjDesc->CommonField.Node = Info->FieldNode;
545 Status = AcpiExPrepCommonFieldObject (ObjDesc,
546 Info->FieldFlags, Info->Attribute,
547 Info->FieldBitPosition, Info->FieldBitLength);
548 if (ACPI_FAILURE (Status))
550 AcpiUtDeleteObjectDesc (ObjDesc);
551 return_ACPI_STATUS (Status);
554 /* Initialize areas of the object that are specific to the field type */
556 switch (Info->FieldType)
558 case ACPI_TYPE_LOCAL_REGION_FIELD:
560 ObjDesc->Field.RegionObj = AcpiNsGetAttachedObject (Info->RegionNode);
562 /* Fields specific to GenericSerialBus fields */
564 ObjDesc->Field.AccessLength = Info->AccessLength;
566 if (Info->ConnectionNode)
568 SecondDesc = Info->ConnectionNode->Object;
569 if (!(SecondDesc->Common.Flags & AOPOBJ_DATA_VALID))
571 Status = AcpiDsGetBufferArguments (SecondDesc);
572 if (ACPI_FAILURE (Status))
574 AcpiUtDeleteObjectDesc (ObjDesc);
575 return_ACPI_STATUS (Status);
579 ObjDesc->Field.ResourceBuffer = SecondDesc->Buffer.Pointer;
580 ObjDesc->Field.ResourceLength = (UINT16) SecondDesc->Buffer.Length;
582 else if (Info->ResourceBuffer)
584 ObjDesc->Field.ResourceBuffer = Info->ResourceBuffer;
585 ObjDesc->Field.ResourceLength = Info->ResourceLength;
588 ObjDesc->Field.PinNumberIndex = Info->PinNumberIndex;
590 /* Allow full data read from EC address space */
592 if ((ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_EC) &&
593 (ObjDesc->CommonField.BitLength > 8))
595 AccessByteWidth = ACPI_ROUND_BITS_UP_TO_BYTES (
596 ObjDesc->CommonField.BitLength);
598 /* Maximum byte width supported is 255 */
600 if (AccessByteWidth < 256)
602 ObjDesc->CommonField.AccessByteWidth = (UINT8) AccessByteWidth;
606 /* An additional reference for the container */
608 AcpiUtAddReference (ObjDesc->Field.RegionObj);
610 ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
611 "RegionField: BitOff %X, Off %X, Gran %X, Region %p\n",
612 ObjDesc->Field.StartFieldBitOffset, ObjDesc->Field.BaseByteOffset,
613 ObjDesc->Field.AccessByteWidth, ObjDesc->Field.RegionObj));
616 case ACPI_TYPE_LOCAL_BANK_FIELD:
618 ObjDesc->BankField.Value = Info->BankValue;
619 ObjDesc->BankField.RegionObj =
620 AcpiNsGetAttachedObject (Info->RegionNode);
621 ObjDesc->BankField.BankObj =
622 AcpiNsGetAttachedObject (Info->RegisterNode);
624 /* An additional reference for the attached objects */
626 AcpiUtAddReference (ObjDesc->BankField.RegionObj);
627 AcpiUtAddReference (ObjDesc->BankField.BankObj);
629 ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
630 "Bank Field: BitOff %X, Off %X, Gran %X, Region %p, BankReg %p\n",
631 ObjDesc->BankField.StartFieldBitOffset,
632 ObjDesc->BankField.BaseByteOffset,
633 ObjDesc->Field.AccessByteWidth,
634 ObjDesc->BankField.RegionObj,
635 ObjDesc->BankField.BankObj));
638 * Remember location in AML stream of the field unit
639 * opcode and operands -- since the BankValue
640 * operands must be evaluated.
642 SecondDesc = ObjDesc->Common.NextObject;
643 SecondDesc->Extra.AmlStart = ACPI_CAST_PTR (ACPI_PARSE_OBJECT,
644 Info->DataRegisterNode)->Named.Data;
645 SecondDesc->Extra.AmlLength = ACPI_CAST_PTR (ACPI_PARSE_OBJECT,
646 Info->DataRegisterNode)->Named.Length;
650 case ACPI_TYPE_LOCAL_INDEX_FIELD:
652 /* Get the Index and Data registers */
654 ObjDesc->IndexField.IndexObj =
655 AcpiNsGetAttachedObject (Info->RegisterNode);
656 ObjDesc->IndexField.DataObj =
657 AcpiNsGetAttachedObject (Info->DataRegisterNode);
659 if (!ObjDesc->IndexField.DataObj || !ObjDesc->IndexField.IndexObj)
661 ACPI_ERROR ((AE_INFO, "Null Index Object during field prep"));
662 AcpiUtDeleteObjectDesc (ObjDesc);
663 return_ACPI_STATUS (AE_AML_INTERNAL);
666 /* An additional reference for the attached objects */
668 AcpiUtAddReference (ObjDesc->IndexField.DataObj);
669 AcpiUtAddReference (ObjDesc->IndexField.IndexObj);
672 * April 2006: Changed to match MS behavior
674 * The value written to the Index register is the byte offset of the
675 * target field in units of the granularity of the IndexField
677 * Previously, the value was calculated as an index in terms of the
678 * width of the Data register, as below:
680 * ObjDesc->IndexField.Value = (UINT32)
681 * (Info->FieldBitPosition / ACPI_MUL_8 (
682 * ObjDesc->Field.AccessByteWidth));
684 * February 2006: Tried value as a byte offset:
685 * ObjDesc->IndexField.Value = (UINT32)
686 * ACPI_DIV_8 (Info->FieldBitPosition);
688 ObjDesc->IndexField.Value = (UINT32) ACPI_ROUND_DOWN (
689 ACPI_DIV_8 (Info->FieldBitPosition),
690 ObjDesc->IndexField.AccessByteWidth);
692 ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
693 "IndexField: BitOff %X, Off %X, Value %X, Gran %X, Index %p, Data %p\n",
694 ObjDesc->IndexField.StartFieldBitOffset,
695 ObjDesc->IndexField.BaseByteOffset,
696 ObjDesc->IndexField.Value,
697 ObjDesc->Field.AccessByteWidth,
698 ObjDesc->IndexField.IndexObj,
699 ObjDesc->IndexField.DataObj));
704 /* No other types should get here */
710 * Store the constructed descriptor (ObjDesc) into the parent Node,
711 * preserving the current type of that NamedObj.
713 Status = AcpiNsAttachObject (Info->FieldNode, ObjDesc,
714 AcpiNsGetType (Info->FieldNode));
716 ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, "Set NamedObj %p [%4.4s], ObjDesc %p\n",
717 Info->FieldNode, AcpiUtGetNodeName (Info->FieldNode), ObjDesc));
719 /* Remove local reference to the object */
721 AcpiUtRemoveReference (ObjDesc);
722 return_ACPI_STATUS (Status);