1 /******************************************************************************
2 *
3 * Module Name: nsxfname - Public interfaces to the ACPI subsystem
4 * ACPI Namespace oriented interfaces
5 *
6 *****************************************************************************/
7
8 /*
9 * Copyright (C) 2000 - 2015, Intel Corp.
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions, and the following disclaimer,
17 * without modification.
18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19 * substantially similar to the "NO WARRANTY" disclaimer below
20 * ("Disclaimer") and any redistribution must be conditioned upon
21 * including a substantially similar Disclaimer requirement for further
22 * binary redistribution.
23 * 3. Neither the names of the above-listed copyright holders nor the names
24 * of any contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * Alternatively, this software may be distributed under the terms of the
28 * GNU General Public License ("GPL") version 2 as published by the Free
29 * Software Foundation.
30 *
31 * NO WARRANTY
32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
35 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
36 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
41 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42 * POSSIBILITY OF SUCH DAMAGES.
43 */
44
45 #define EXPORT_ACPI_INTERFACES
46
47 #include <contrib/dev/acpica/include/acpi.h>
48 #include <contrib/dev/acpica/include/accommon.h>
49 #include <contrib/dev/acpica/include/acnamesp.h>
50 #include <contrib/dev/acpica/include/acparser.h>
51 #include <contrib/dev/acpica/include/amlcode.h>
52
53
54 #define _COMPONENT ACPI_NAMESPACE
55 ACPI_MODULE_NAME ("nsxfname")
56
57 /* Local prototypes */
58
59 static char *
60 AcpiNsCopyDeviceId (
61 ACPI_PNP_DEVICE_ID *Dest,
62 ACPI_PNP_DEVICE_ID *Source,
63 char *StringArea);
64
65
66 /******************************************************************************
67 *
68 * FUNCTION: AcpiGetHandle
69 *
70 * PARAMETERS: Parent - Object to search under (search scope).
71 * Pathname - Pointer to an asciiz string containing the
72 * name
73 * RetHandle - Where the return handle is returned
74 *
75 * RETURN: Status
76 *
77 * DESCRIPTION: This routine will search for a caller specified name in the
78 * name space. The caller can restrict the search region by
79 * specifying a non NULL parent. The parent value is itself a
80 * namespace handle.
81 *
82 ******************************************************************************/
83
84 ACPI_STATUS
AcpiGetHandle(ACPI_HANDLE Parent,ACPI_STRING Pathname,ACPI_HANDLE * RetHandle)85 AcpiGetHandle (
86 ACPI_HANDLE Parent,
87 ACPI_STRING Pathname,
88 ACPI_HANDLE *RetHandle)
89 {
90 ACPI_STATUS Status;
91 ACPI_NAMESPACE_NODE *Node = NULL;
92 ACPI_NAMESPACE_NODE *PrefixNode = NULL;
93
94
95 ACPI_FUNCTION_ENTRY ();
96
97
98 /* Parameter Validation */
99
100 if (!RetHandle || !Pathname)
101 {
102 return (AE_BAD_PARAMETER);
103 }
104
105 /* Convert a parent handle to a prefix node */
106
107 if (Parent)
108 {
109 PrefixNode = AcpiNsValidateHandle (Parent);
110 if (!PrefixNode)
111 {
112 return (AE_BAD_PARAMETER);
113 }
114 }
115
116 /*
117 * Valid cases are:
118 * 1) Fully qualified pathname
119 * 2) Parent + Relative pathname
120 *
121 * Error for <null Parent + relative path>
122 */
123 if (ACPI_IS_ROOT_PREFIX (Pathname[0]))
124 {
125 /* Pathname is fully qualified (starts with '\') */
126
127 /* Special case for root-only, since we can't search for it */
128
129 if (!strcmp (Pathname, ACPI_NS_ROOT_PATH))
130 {
131 *RetHandle = ACPI_CAST_PTR (ACPI_HANDLE, AcpiGbl_RootNode);
132 return (AE_OK);
133 }
134 }
135 else if (!PrefixNode)
136 {
137 /* Relative path with null prefix is disallowed */
138
139 return (AE_BAD_PARAMETER);
140 }
141
142 /* Find the Node and convert to a handle */
143
144 Status = AcpiNsGetNode (PrefixNode, Pathname, ACPI_NS_NO_UPSEARCH, &Node);
145 if (ACPI_SUCCESS (Status))
146 {
147 *RetHandle = ACPI_CAST_PTR (ACPI_HANDLE, Node);
148 }
149
150 return (Status);
151 }
152
ACPI_EXPORT_SYMBOL(AcpiGetHandle)153 ACPI_EXPORT_SYMBOL (AcpiGetHandle)
154
155
156 /******************************************************************************
157 *
158 * FUNCTION: AcpiGetName
159 *
160 * PARAMETERS: Handle - Handle to be converted to a pathname
161 * NameType - Full pathname or single segment
162 * Buffer - Buffer for returned path
163 *
164 * RETURN: Pointer to a string containing the fully qualified Name.
165 *
166 * DESCRIPTION: This routine returns the fully qualified name associated with
167 * the Handle parameter. This and the AcpiPathnameToHandle are
168 * complementary functions.
169 *
170 ******************************************************************************/
171
172 ACPI_STATUS
173 AcpiGetName (
174 ACPI_HANDLE Handle,
175 UINT32 NameType,
176 ACPI_BUFFER *Buffer)
177 {
178 ACPI_STATUS Status;
179 ACPI_NAMESPACE_NODE *Node;
180 char *NodeName;
181
182
183 /* Parameter validation */
184
185 if (NameType > ACPI_NAME_TYPE_MAX)
186 {
187 return (AE_BAD_PARAMETER);
188 }
189
190 Status = AcpiUtValidateBuffer (Buffer);
191 if (ACPI_FAILURE (Status))
192 {
193 return (Status);
194 }
195
196 if (NameType == ACPI_FULL_PATHNAME ||
197 NameType == ACPI_FULL_PATHNAME_NO_TRAILING)
198 {
199 /* Get the full pathname (From the namespace root) */
200
201 Status = AcpiNsHandleToPathname (Handle, Buffer,
202 NameType == ACPI_FULL_PATHNAME ? FALSE : TRUE);
203 return (Status);
204 }
205
206 /*
207 * Wants the single segment ACPI name.
208 * Validate handle and convert to a namespace Node
209 */
210 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
211 if (ACPI_FAILURE (Status))
212 {
213 return (Status);
214 }
215
216 Node = AcpiNsValidateHandle (Handle);
217 if (!Node)
218 {
219 Status = AE_BAD_PARAMETER;
220 goto UnlockAndExit;
221 }
222
223 /* Validate/Allocate/Clear caller buffer */
224
225 Status = AcpiUtInitializeBuffer (Buffer, ACPI_PATH_SEGMENT_LENGTH);
226 if (ACPI_FAILURE (Status))
227 {
228 goto UnlockAndExit;
229 }
230
231 /* Just copy the ACPI name from the Node and zero terminate it */
232
233 NodeName = AcpiUtGetNodeName (Node);
234 ACPI_MOVE_NAME (Buffer->Pointer, NodeName);
235 ((char *) Buffer->Pointer) [ACPI_NAME_SIZE] = 0;
236 Status = AE_OK;
237
238
239 UnlockAndExit:
240
241 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
242 return (Status);
243 }
244
ACPI_EXPORT_SYMBOL(AcpiGetName)245 ACPI_EXPORT_SYMBOL (AcpiGetName)
246
247
248 /******************************************************************************
249 *
250 * FUNCTION: AcpiNsCopyDeviceId
251 *
252 * PARAMETERS: Dest - Pointer to the destination PNP_DEVICE_ID
253 * Source - Pointer to the source PNP_DEVICE_ID
254 * StringArea - Pointer to where to copy the dest string
255 *
256 * RETURN: Pointer to the next string area
257 *
258 * DESCRIPTION: Copy a single PNP_DEVICE_ID, including the string data.
259 *
260 ******************************************************************************/
261
262 static char *
263 AcpiNsCopyDeviceId (
264 ACPI_PNP_DEVICE_ID *Dest,
265 ACPI_PNP_DEVICE_ID *Source,
266 char *StringArea)
267 {
268
269 /* Create the destination PNP_DEVICE_ID */
270
271 Dest->String = StringArea;
272 Dest->Length = Source->Length;
273
274 /* Copy actual string and return a pointer to the next string area */
275
276 memcpy (StringArea, Source->String, Source->Length);
277 return (StringArea + Source->Length);
278 }
279
280
281 /******************************************************************************
282 *
283 * FUNCTION: AcpiGetObjectInfo
284 *
285 * PARAMETERS: Handle - Object Handle
286 * ReturnBuffer - Where the info is returned
287 *
288 * RETURN: Status
289 *
290 * DESCRIPTION: Returns information about an object as gleaned from the
291 * namespace node and possibly by running several standard
292 * control methods (Such as in the case of a device.)
293 *
294 * For Device and Processor objects, run the Device _HID, _UID, _CID, _SUB,
295 * _CLS, _STA, _ADR, _SxW, and _SxD methods.
296 *
297 * Note: Allocates the return buffer, must be freed by the caller.
298 *
299 ******************************************************************************/
300
301 ACPI_STATUS
AcpiGetObjectInfo(ACPI_HANDLE Handle,ACPI_DEVICE_INFO ** ReturnBuffer)302 AcpiGetObjectInfo (
303 ACPI_HANDLE Handle,
304 ACPI_DEVICE_INFO **ReturnBuffer)
305 {
306 ACPI_NAMESPACE_NODE *Node;
307 ACPI_DEVICE_INFO *Info;
308 ACPI_PNP_DEVICE_ID_LIST *CidList = NULL;
309 ACPI_PNP_DEVICE_ID *Hid = NULL;
310 ACPI_PNP_DEVICE_ID *Uid = NULL;
311 ACPI_PNP_DEVICE_ID *Sub = NULL;
312 ACPI_PNP_DEVICE_ID *Cls = NULL;
313 char *NextIdString;
314 ACPI_OBJECT_TYPE Type;
315 ACPI_NAME Name;
316 UINT8 ParamCount= 0;
317 UINT16 Valid = 0;
318 UINT32 InfoSize;
319 UINT32 i;
320 ACPI_STATUS Status;
321
322
323 /* Parameter validation */
324
325 if (!Handle || !ReturnBuffer)
326 {
327 return (AE_BAD_PARAMETER);
328 }
329
330 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
331 if (ACPI_FAILURE (Status))
332 {
333 return (Status);
334 }
335
336 Node = AcpiNsValidateHandle (Handle);
337 if (!Node)
338 {
339 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
340 return (AE_BAD_PARAMETER);
341 }
342
343 /* Get the namespace node data while the namespace is locked */
344
345 InfoSize = sizeof (ACPI_DEVICE_INFO);
346 Type = Node->Type;
347 Name = Node->Name.Integer;
348
349 if (Node->Type == ACPI_TYPE_METHOD)
350 {
351 ParamCount = Node->Object->Method.ParamCount;
352 }
353
354 Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
355 if (ACPI_FAILURE (Status))
356 {
357 return (Status);
358 }
359
360 if ((Type == ACPI_TYPE_DEVICE) ||
361 (Type == ACPI_TYPE_PROCESSOR))
362 {
363 /*
364 * Get extra info for ACPI Device/Processor objects only:
365 * Run the Device _HID, _UID, _SUB, _CID, and _CLS methods.
366 *
367 * Note: none of these methods are required, so they may or may
368 * not be present for this device. The Info->Valid bitfield is used
369 * to indicate which methods were found and run successfully.
370 */
371
372 /* Execute the Device._HID method */
373
374 Status = AcpiUtExecute_HID (Node, &Hid);
375 if (ACPI_SUCCESS (Status))
376 {
377 InfoSize += Hid->Length;
378 Valid |= ACPI_VALID_HID;
379 }
380
381 /* Execute the Device._UID method */
382
383 Status = AcpiUtExecute_UID (Node, &Uid);
384 if (ACPI_SUCCESS (Status))
385 {
386 InfoSize += Uid->Length;
387 Valid |= ACPI_VALID_UID;
388 }
389
390 /* Execute the Device._SUB method */
391
392 Status = AcpiUtExecute_SUB (Node, &Sub);
393 if (ACPI_SUCCESS (Status))
394 {
395 InfoSize += Sub->Length;
396 Valid |= ACPI_VALID_SUB;
397 }
398
399 /* Execute the Device._CID method */
400
401 Status = AcpiUtExecute_CID (Node, &CidList);
402 if (ACPI_SUCCESS (Status))
403 {
404 /* Add size of CID strings and CID pointer array */
405
406 InfoSize += (CidList->ListSize - sizeof (ACPI_PNP_DEVICE_ID_LIST));
407 Valid |= ACPI_VALID_CID;
408 }
409
410 /* Execute the Device._CLS method */
411
412 Status = AcpiUtExecute_CLS (Node, &Cls);
413 if (ACPI_SUCCESS (Status))
414 {
415 InfoSize += Cls->Length;
416 Valid |= ACPI_VALID_CLS;
417 }
418 }
419
420 /*
421 * Now that we have the variable-length data, we can allocate the
422 * return buffer
423 */
424 Info = ACPI_ALLOCATE_ZEROED (InfoSize);
425 if (!Info)
426 {
427 Status = AE_NO_MEMORY;
428 goto Cleanup;
429 }
430
431 /* Get the fixed-length data */
432
433 if ((Type == ACPI_TYPE_DEVICE) ||
434 (Type == ACPI_TYPE_PROCESSOR))
435 {
436 /*
437 * Get extra info for ACPI Device/Processor objects only:
438 * Run the _STA, _ADR and, SxW, and _SxD methods.
439 *
440 * Notes: none of these methods are required, so they may or may
441 * not be present for this device. The Info->Valid bitfield is used
442 * to indicate which methods were found and run successfully.
443 *
444 * For _STA, if the method does not exist, then (as per the ACPI
445 * specification), the returned CurrentStatus flags will indicate
446 * that the device is present/functional/enabled. Otherwise, the
447 * CurrentStatus flags reflect the value returned from _STA.
448 */
449
450 /* Execute the Device._STA method */
451
452 Status = AcpiUtExecute_STA (Node, &Info->CurrentStatus);
453 if (ACPI_SUCCESS (Status))
454 {
455 Valid |= ACPI_VALID_STA;
456 }
457
458 /* Execute the Device._ADR method */
459
460 Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR, Node,
461 &Info->Address);
462 if (ACPI_SUCCESS (Status))
463 {
464 Valid |= ACPI_VALID_ADR;
465 }
466
467 /* Execute the Device._SxW methods */
468
469 Status = AcpiUtExecutePowerMethods (Node,
470 AcpiGbl_LowestDstateNames, ACPI_NUM_SxW_METHODS,
471 Info->LowestDstates);
472 if (ACPI_SUCCESS (Status))
473 {
474 Valid |= ACPI_VALID_SXWS;
475 }
476
477 /* Execute the Device._SxD methods */
478
479 Status = AcpiUtExecutePowerMethods (Node,
480 AcpiGbl_HighestDstateNames, ACPI_NUM_SxD_METHODS,
481 Info->HighestDstates);
482 if (ACPI_SUCCESS (Status))
483 {
484 Valid |= ACPI_VALID_SXDS;
485 }
486 }
487
488 /*
489 * Create a pointer to the string area of the return buffer.
490 * Point to the end of the base ACPI_DEVICE_INFO structure.
491 */
492 NextIdString = ACPI_CAST_PTR (char, Info->CompatibleIdList.Ids);
493 if (CidList)
494 {
495 /* Point past the CID PNP_DEVICE_ID array */
496
497 NextIdString += ((ACPI_SIZE) CidList->Count * sizeof (ACPI_PNP_DEVICE_ID));
498 }
499
500 /*
501 * Copy the HID, UID, SUB, and CIDs to the return buffer.
502 * The variable-length strings are copied to the reserved area
503 * at the end of the buffer.
504 *
505 * For HID and CID, check if the ID is a PCI Root Bridge.
506 */
507 if (Hid)
508 {
509 NextIdString = AcpiNsCopyDeviceId (&Info->HardwareId,
510 Hid, NextIdString);
511
512 if (AcpiUtIsPciRootBridge (Hid->String))
513 {
514 Info->Flags |= ACPI_PCI_ROOT_BRIDGE;
515 }
516 }
517
518 if (Uid)
519 {
520 NextIdString = AcpiNsCopyDeviceId (&Info->UniqueId,
521 Uid, NextIdString);
522 }
523
524 if (Sub)
525 {
526 NextIdString = AcpiNsCopyDeviceId (&Info->SubsystemId,
527 Sub, NextIdString);
528 }
529
530 if (CidList)
531 {
532 Info->CompatibleIdList.Count = CidList->Count;
533 Info->CompatibleIdList.ListSize = CidList->ListSize;
534
535 /* Copy each CID */
536
537 for (i = 0; i < CidList->Count; i++)
538 {
539 NextIdString = AcpiNsCopyDeviceId (&Info->CompatibleIdList.Ids[i],
540 &CidList->Ids[i], NextIdString);
541
542 if (AcpiUtIsPciRootBridge (CidList->Ids[i].String))
543 {
544 Info->Flags |= ACPI_PCI_ROOT_BRIDGE;
545 }
546 }
547 }
548
549 if (Cls)
550 {
551 NextIdString = AcpiNsCopyDeviceId (&Info->ClassCode,
552 Cls, NextIdString);
553 }
554
555 /* Copy the fixed-length data */
556
557 Info->InfoSize = InfoSize;
558 Info->Type = Type;
559 Info->Name = Name;
560 Info->ParamCount = ParamCount;
561 Info->Valid = Valid;
562
563 *ReturnBuffer = Info;
564 Status = AE_OK;
565
566
567 Cleanup:
568 if (Hid)
569 {
570 ACPI_FREE (Hid);
571 }
572 if (Uid)
573 {
574 ACPI_FREE (Uid);
575 }
576 if (Sub)
577 {
578 ACPI_FREE (Sub);
579 }
580 if (CidList)
581 {
582 ACPI_FREE (CidList);
583 }
584 if (Cls)
585 {
586 ACPI_FREE (Cls);
587 }
588 return (Status);
589 }
590
ACPI_EXPORT_SYMBOL(AcpiGetObjectInfo)591 ACPI_EXPORT_SYMBOL (AcpiGetObjectInfo)
592
593
594 /******************************************************************************
595 *
596 * FUNCTION: AcpiInstallMethod
597 *
598 * PARAMETERS: Buffer - An ACPI table containing one control method
599 *
600 * RETURN: Status
601 *
602 * DESCRIPTION: Install a control method into the namespace. If the method
603 * name already exists in the namespace, it is overwritten. The
604 * input buffer must contain a valid DSDT or SSDT containing a
605 * single control method.
606 *
607 ******************************************************************************/
608
609 ACPI_STATUS
610 AcpiInstallMethod (
611 UINT8 *Buffer)
612 {
613 ACPI_TABLE_HEADER *Table = ACPI_CAST_PTR (ACPI_TABLE_HEADER, Buffer);
614 UINT8 *AmlBuffer;
615 UINT8 *AmlStart;
616 char *Path;
617 ACPI_NAMESPACE_NODE *Node;
618 ACPI_OPERAND_OBJECT *MethodObj;
619 ACPI_PARSE_STATE ParserState;
620 UINT32 AmlLength;
621 UINT16 Opcode;
622 UINT8 MethodFlags;
623 ACPI_STATUS Status;
624
625
626 /* Parameter validation */
627
628 if (!Buffer)
629 {
630 return (AE_BAD_PARAMETER);
631 }
632
633 /* Table must be a DSDT or SSDT */
634
635 if (!ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_DSDT) &&
636 !ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_SSDT))
637 {
638 return (AE_BAD_HEADER);
639 }
640
641 /* First AML opcode in the table must be a control method */
642
643 ParserState.Aml = Buffer + sizeof (ACPI_TABLE_HEADER);
644 Opcode = AcpiPsPeekOpcode (&ParserState);
645 if (Opcode != AML_METHOD_OP)
646 {
647 return (AE_BAD_PARAMETER);
648 }
649
650 /* Extract method information from the raw AML */
651
652 ParserState.Aml += AcpiPsGetOpcodeSize (Opcode);
653 ParserState.PkgEnd = AcpiPsGetNextPackageEnd (&ParserState);
654 Path = AcpiPsGetNextNamestring (&ParserState);
655 MethodFlags = *ParserState.Aml++;
656 AmlStart = ParserState.Aml;
657 AmlLength = ACPI_PTR_DIFF (ParserState.PkgEnd, AmlStart);
658
659 /*
660 * Allocate resources up-front. We don't want to have to delete a new
661 * node from the namespace if we cannot allocate memory.
662 */
663 AmlBuffer = ACPI_ALLOCATE (AmlLength);
664 if (!AmlBuffer)
665 {
666 return (AE_NO_MEMORY);
667 }
668
669 MethodObj = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD);
670 if (!MethodObj)
671 {
672 ACPI_FREE (AmlBuffer);
673 return (AE_NO_MEMORY);
674 }
675
676 /* Lock namespace for AcpiNsLookup, we may be creating a new node */
677
678 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
679 if (ACPI_FAILURE (Status))
680 {
681 goto ErrorExit;
682 }
683
684 /* The lookup either returns an existing node or creates a new one */
685
686 Status = AcpiNsLookup (NULL, Path, ACPI_TYPE_METHOD, ACPI_IMODE_LOAD_PASS1,
687 ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND, NULL, &Node);
688
689 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
690
691 if (ACPI_FAILURE (Status)) /* NsLookup */
692 {
693 if (Status != AE_ALREADY_EXISTS)
694 {
695 goto ErrorExit;
696 }
697
698 /* Node existed previously, make sure it is a method node */
699
700 if (Node->Type != ACPI_TYPE_METHOD)
701 {
702 Status = AE_TYPE;
703 goto ErrorExit;
704 }
705 }
706
707 /* Copy the method AML to the local buffer */
708
709 memcpy (AmlBuffer, AmlStart, AmlLength);
710
711 /* Initialize the method object with the new method's information */
712
713 MethodObj->Method.AmlStart = AmlBuffer;
714 MethodObj->Method.AmlLength = AmlLength;
715
716 MethodObj->Method.ParamCount = (UINT8)
717 (MethodFlags & AML_METHOD_ARG_COUNT);
718
719 if (MethodFlags & AML_METHOD_SERIALIZED)
720 {
721 MethodObj->Method.InfoFlags = ACPI_METHOD_SERIALIZED;
722
723 MethodObj->Method.SyncLevel = (UINT8)
724 ((MethodFlags & AML_METHOD_SYNC_LEVEL) >> 4);
725 }
726
727 /*
728 * Now that it is complete, we can attach the new method object to
729 * the method Node (detaches/deletes any existing object)
730 */
731 Status = AcpiNsAttachObject (Node, MethodObj, ACPI_TYPE_METHOD);
732
733 /*
734 * Flag indicates AML buffer is dynamic, must be deleted later.
735 * Must be set only after attach above.
736 */
737 Node->Flags |= ANOBJ_ALLOCATED_BUFFER;
738
739 /* Remove local reference to the method object */
740
741 AcpiUtRemoveReference (MethodObj);
742 return (Status);
743
744
745 ErrorExit:
746
747 ACPI_FREE (AmlBuffer);
748 ACPI_FREE (MethodObj);
749 return (Status);
750 }
751
752 ACPI_EXPORT_SYMBOL (AcpiInstallMethod)
753