5 *
6 *****************************************************************************/
7
8/******************************************************************************
9 *
10 * 1. Copyright Notice
11 *
12 * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp.
13 * All rights reserved.
14 *
15 * 2. License
16 *
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
20 * property rights.
21 *
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
28 *
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
54 *
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
65 * make.
66 *
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
89 * PARTICULAR PURPOSE.
90 *
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
98 * LIMITED REMEDY.
99 *
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
114 *
115 *****************************************************************************/
116
117#include "acpi.h"
118#include "acevents.h"
119#include "acnamesp.h"
120
121#define _COMPONENT ACPI_EVENTS
122 ACPI_MODULE_NAME ("evgpeblk")
123
124
125/*******************************************************************************
126 *
127 * FUNCTION: AcpiEvValidGpeEvent
128 *
129 * PARAMETERS: GpeEventInfo - Info for this GPE
130 *
131 * RETURN: TRUE if the GpeEvent is valid
132 *
133 * DESCRIPTION: Validate a GPE event. DO NOT CALL FROM INTERRUPT LEVEL.
134 * Should be called only when the GPE lists are semaphore locked
135 * and not subject to change.
136 *
137 ******************************************************************************/
138
139BOOLEAN
140AcpiEvValidGpeEvent (
141 ACPI_GPE_EVENT_INFO *GpeEventInfo)
142{
143 ACPI_GPE_XRUPT_INFO *GpeXruptBlock;
144 ACPI_GPE_BLOCK_INFO *GpeBlock;
145
146
147 ACPI_FUNCTION_ENTRY ();
148
149
150 /* No need for spin lock since we are not changing any list elements */
151
152 /* Walk the GPE interrupt levels */
153
154 GpeXruptBlock = AcpiGbl_GpeXruptListHead;
155 while (GpeXruptBlock)
156 {
157 GpeBlock = GpeXruptBlock->GpeBlockListHead;
158
159 /* Walk the GPE blocks on this interrupt level */
160
161 while (GpeBlock)
162 {
163 if ((&GpeBlock->EventInfo[0] <= GpeEventInfo) &&
164 (&GpeBlock->EventInfo[((ACPI_SIZE) GpeBlock->RegisterCount) * 8] > GpeEventInfo))
165 {
166 return (TRUE);
167 }
168
169 GpeBlock = GpeBlock->Next;
170 }
171
172 GpeXruptBlock = GpeXruptBlock->Next;
173 }
174
175 return (FALSE);
176}
177
178
179/*******************************************************************************
180 *
181 * FUNCTION: AcpiEvWalkGpeList
182 *
183 * PARAMETERS: GpeWalkCallback - Routine called for each GPE block
184 *
185 * RETURN: Status
186 *
187 * DESCRIPTION: Walk the GPE lists.
188 * FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
189 *
190 ******************************************************************************/
191
192ACPI_STATUS
193AcpiEvWalkGpeList (
194 ACPI_GPE_CALLBACK GpeWalkCallback)
195{
196 ACPI_GPE_BLOCK_INFO *GpeBlock;
197 ACPI_GPE_XRUPT_INFO *GpeXruptInfo;
198 ACPI_STATUS Status = AE_OK;
199
200
201 ACPI_FUNCTION_TRACE ("EvWalkGpeList");
202
203
204 AcpiOsAcquireLock (AcpiGbl_GpeLock, ACPI_ISR);
205
206 /* Walk the interrupt level descriptor list */
207
208 GpeXruptInfo = AcpiGbl_GpeXruptListHead;
209 while (GpeXruptInfo)
210 {
211 /* Walk all Gpe Blocks attached to this interrupt level */
212
213 GpeBlock = GpeXruptInfo->GpeBlockListHead;
214 while (GpeBlock)
215 {
216 /* One callback per GPE block */
217
218 Status = GpeWalkCallback (GpeXruptInfo, GpeBlock);
219 if (ACPI_FAILURE (Status))
220 {
221 goto UnlockAndExit;
222 }
223
224 GpeBlock = GpeBlock->Next;
225 }
226
227 GpeXruptInfo = GpeXruptInfo->Next;
228 }
229
230UnlockAndExit:
231 AcpiOsReleaseLock (AcpiGbl_GpeLock, ACPI_ISR);
232 return_ACPI_STATUS (Status);
233}
234
235
236/******************************************************************************
237 *
238 * FUNCTION: AcpiEvDeleteGpeHandlers
239 *
240 * PARAMETERS: GpeXruptInfo - GPE Interrupt info
241 * GpeBlock - Gpe Block info
242 *
243 * RETURN: Status
244 *
245 * DESCRIPTION: Delete all Handler objects found in the GPE data structs.
246 * Used only prior to termination.
247 *
248 ******************************************************************************/
249
250ACPI_STATUS
251AcpiEvDeleteGpeHandlers (
252 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
253 ACPI_GPE_BLOCK_INFO *GpeBlock)
254{
255 ACPI_GPE_EVENT_INFO *GpeEventInfo;
256 ACPI_NATIVE_UINT i;
257 ACPI_NATIVE_UINT j;
258
259
260 ACPI_FUNCTION_TRACE ("EvDeleteGpeHandlers");
261
262
263 /* Examine each GPE Register within the block */
264
265 for (i = 0; i < GpeBlock->RegisterCount; i++)
266 {
267 /* Now look at the individual GPEs in this byte register */
268
269 for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
270 {
271 GpeEventInfo = &GpeBlock->EventInfo[(i * ACPI_GPE_REGISTER_WIDTH) + j];
272
273 if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) == ACPI_GPE_DISPATCH_HANDLER)
274 {
275 ACPI_MEM_FREE (GpeEventInfo->Dispatch.Handler);
276 GpeEventInfo->Dispatch.Handler = NULL;
277 GpeEventInfo->Flags &= ~ACPI_GPE_DISPATCH_MASK;
278 }
279 }
280 }
281
282 return_ACPI_STATUS (AE_OK);
283}
284
285
286/*******************************************************************************
287 *
288 * FUNCTION: AcpiEvSaveMethodInfo
289 *
290 * PARAMETERS: Callback from WalkNamespace
291 *
292 * RETURN: Status
293 *
294 * DESCRIPTION: Called from AcpiWalkNamespace. Expects each object to be a
295 * control method under the _GPE portion of the namespace.
296 * Extract the name and GPE type from the object, saving this
297 * information for quick lookup during GPE dispatch
298 *
299 * The name of each GPE control method is of the form:
300 * "_Lxx" or "_Exx"
301 * Where:
302 * L - means that the GPE is level triggered
303 * E - means that the GPE is edge triggered
304 * xx - is the GPE number [in HEX]
305 *
306 ******************************************************************************/
307
308static ACPI_STATUS
309AcpiEvSaveMethodInfo (
310 ACPI_HANDLE ObjHandle,
311 UINT32 Level,
312 void *ObjDesc,
313 void **ReturnValue)
314{
315 ACPI_GPE_BLOCK_INFO *GpeBlock = (void *) ObjDesc;
316 ACPI_GPE_EVENT_INFO *GpeEventInfo;
317 UINT32 GpeNumber;
318 char Name[ACPI_NAME_SIZE + 1];
319 UINT8 Type;
320 ACPI_STATUS Status;
321
322
323 ACPI_FUNCTION_TRACE ("EvSaveMethodInfo");
324
325
326 /*
327 * _Lxx and _Exx GPE method support
328 *
329 * 1) Extract the name from the object and convert to a string
330 */
331 ACPI_MOVE_32_TO_32 (Name,
332 &((ACPI_NAMESPACE_NODE *) ObjHandle)->Name.Integer);
333 Name[ACPI_NAME_SIZE] = 0;
334
335 /*
336 * 2) Edge/Level determination is based on the 2nd character
337 * of the method name
338 *
339 * NOTE: Default GPE type is RUNTIME. May be changed later to WAKE
340 * if a _PRW object is found that points to this GPE.
341 */
342 switch (Name[1])
343 {
344 case 'L':
345 Type = ACPI_GPE_LEVEL_TRIGGERED;
346 break;
347
348 case 'E':
349 Type = ACPI_GPE_EDGE_TRIGGERED;
350 break;
351
352 default:
353 /* Unknown method type, just ignore it! */
354
355 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
356 "Unknown GPE method type: %s (name not of form _Lxx or _Exx)\n",
357 Name));
358 return_ACPI_STATUS (AE_OK);
359 }
360
361 /* Convert the last two characters of the name to the GPE Number */
362
363 GpeNumber = ACPI_STRTOUL (&Name[2], NULL, 16);
364 if (GpeNumber == ACPI_UINT32_MAX)
365 {
366 /* Conversion failed; invalid method, just ignore it */
367
368 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
369 "Could not extract GPE number from name: %s (name is not of form _Lxx or _Exx)\n",
370 Name));
371 return_ACPI_STATUS (AE_OK);
372 }
373
374 /* Ensure that we have a valid GPE number for this GPE block */
375
376 if ((GpeNumber < GpeBlock->BlockBaseNumber) ||
377 (GpeNumber >= (GpeBlock->BlockBaseNumber + (GpeBlock->RegisterCount * 8))))
378 {
379 /*
380 * Not valid for this GPE block, just ignore it
381 * However, it may be valid for a different GPE block, since GPE0 and GPE1
382 * methods both appear under \_GPE.
383 */
384 return_ACPI_STATUS (AE_OK);
385 }
386
387 /*
388 * Now we can add this information to the GpeEventInfo block
389 * for use during dispatch of this GPE. Default type is RUNTIME, although
390 * this may change when the _PRW methods are executed later.
391 */
392 GpeEventInfo = &GpeBlock->EventInfo[GpeNumber - GpeBlock->BlockBaseNumber];
393
394 GpeEventInfo->Flags = (UINT8) (Type | ACPI_GPE_DISPATCH_METHOD |
395 ACPI_GPE_TYPE_RUNTIME);
396
397 GpeEventInfo->Dispatch.MethodNode = (ACPI_NAMESPACE_NODE *) ObjHandle;
398
399 /* Update enable mask, but don't enable the HW GPE as of yet */
400
401 Status = AcpiEvEnableGpe (GpeEventInfo, FALSE);
402
403 ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
404 "Registered GPE method %s as GPE number 0x%.2X\n",
405 Name, GpeNumber));
406 return_ACPI_STATUS (Status);
407}
408
409
410/*******************************************************************************
411 *
412 * FUNCTION: AcpiEvMatchPrwAndGpe
413 *
414 * PARAMETERS: Callback from WalkNamespace
415 *
416 * RETURN: Status
417 *
418 * DESCRIPTION: Called from AcpiWalkNamespace. Expects each object to be a
419 * Device. Run the _PRW method. If present, extract the GPE
420 * number and mark the GPE as a WAKE GPE.
421 *
422 ******************************************************************************/
423
424static ACPI_STATUS
425AcpiEvMatchPrwAndGpe (
426 ACPI_HANDLE ObjHandle,
427 UINT32 Level,
428 void *Info,
429 void **ReturnValue)
430{
431 ACPI_GPE_WALK_INFO *GpeInfo = (void *) Info;
432 ACPI_NAMESPACE_NODE *GpeDevice;
433 ACPI_GPE_BLOCK_INFO *GpeBlock;
434 ACPI_NAMESPACE_NODE *TargetGpeDevice;
435 ACPI_GPE_EVENT_INFO *GpeEventInfo;
436 ACPI_OPERAND_OBJECT *PkgDesc;
437 ACPI_OPERAND_OBJECT *ObjDesc;
438 UINT32 GpeNumber;
439 ACPI_STATUS Status;
440
441
442 ACPI_FUNCTION_TRACE ("EvMatchPrwAndGpe");
443
444
445 /* Check for a _PRW method under this device */
446
447 Status = AcpiUtEvaluateObject (ObjHandle, METHOD_NAME__PRW,
448 ACPI_BTYPE_PACKAGE, &PkgDesc);
449 if (ACPI_FAILURE (Status))
450 {
451 /* Ignore all errors from _PRW, we don't want to abort the subsystem */
452
453 return_ACPI_STATUS (AE_OK);
454 }
455
456 /* The returned _PRW package must have at least two elements */
457
458 if (PkgDesc->Package.Count < 2)
459 {
460 goto Cleanup;
461 }
462
463 /* Extract pointers from the input context */
464
465 GpeDevice = GpeInfo->GpeDevice;
466 GpeBlock = GpeInfo->GpeBlock;
467
468 /*
469 * The _PRW object must return a package, we are only interested
470 * in the first element
471 */
472 ObjDesc = PkgDesc->Package.Elements[0];
473
474 if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_INTEGER)
475 {
476 /* Use FADT-defined GPE device (from definition of _PRW) */
477
478 TargetGpeDevice = AcpiGbl_FadtGpeDevice;
479
480 /* Integer is the GPE number in the FADT described GPE blocks */
481
482 GpeNumber = (UINT32) ObjDesc->Integer.Value;
483 }
484 else if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_PACKAGE)
485 {
486 /* Package contains a GPE reference and GPE number within a GPE block */
487
488 if ((ObjDesc->Package.Count < 2) ||
489 (ACPI_GET_OBJECT_TYPE (ObjDesc->Package.Elements[0]) != ACPI_TYPE_LOCAL_REFERENCE) ||
490 (ACPI_GET_OBJECT_TYPE (ObjDesc->Package.Elements[1]) != ACPI_TYPE_INTEGER))
491 {
492 goto Cleanup;
493 }
494
495 /* Get GPE block reference and decode */
496
497 TargetGpeDevice = ObjDesc->Package.Elements[0]->Reference.Node;
498 GpeNumber = (UINT32) ObjDesc->Package.Elements[1]->Integer.Value;
499 }
500 else
501 {
502 /* Unknown type, just ignore it */
503
504 goto Cleanup;
505 }
506
507 /*
508 * Is this GPE within this block?
509 *
510 * TRUE iff these conditions are true:
511 * 1) The GPE devices match.
512 * 2) The GPE index(number) is within the range of the Gpe Block
513 * associated with the GPE device.
514 */
515 if ((GpeDevice == TargetGpeDevice) &&
516 (GpeNumber >= GpeBlock->BlockBaseNumber) &&
517 (GpeNumber < GpeBlock->BlockBaseNumber + (GpeBlock->RegisterCount * 8)))
518 {
519 GpeEventInfo = &GpeBlock->EventInfo[GpeNumber - GpeBlock->BlockBaseNumber];
520
521 /* Mark GPE for WAKE-ONLY but WAKE_DISABLED */
522
523 GpeEventInfo->Flags &= ~(ACPI_GPE_WAKE_ENABLED | ACPI_GPE_RUN_ENABLED);
524 Status = AcpiEvSetGpeType (GpeEventInfo, ACPI_GPE_TYPE_WAKE);
525 if (ACPI_FAILURE (Status))
526 {
527 goto Cleanup;
528 }
529 Status = AcpiEvUpdateGpeEnableMasks (GpeEventInfo, ACPI_GPE_DISABLE);
530 }
531
532Cleanup:
533 AcpiUtRemoveReference (PkgDesc);
534 return_ACPI_STATUS (AE_OK);
535}
536
537
538/*******************************************************************************
539 *
540 * FUNCTION: AcpiEvGetGpeXruptBlock
541 *
542 * PARAMETERS: InterruptLevel - Interrupt for a GPE block
543 *
544 * RETURN: A GPE interrupt block
545 *
546 * DESCRIPTION: Get or Create a GPE interrupt block. There is one interrupt
547 * block per unique interrupt level used for GPEs.
548 * Should be called only when the GPE lists are semaphore locked
549 * and not subject to change.
550 *
551 ******************************************************************************/
552
553static ACPI_GPE_XRUPT_INFO *
554AcpiEvGetGpeXruptBlock (
555 UINT32 InterruptLevel)
556{
557 ACPI_GPE_XRUPT_INFO *NextGpeXrupt;
558 ACPI_GPE_XRUPT_INFO *GpeXrupt;
559 ACPI_STATUS Status;
560
561
562 ACPI_FUNCTION_TRACE ("EvGetGpeXruptBlock");
563
564
565 /* No need for spin lock since we are not changing any list elements here */
566
567 NextGpeXrupt = AcpiGbl_GpeXruptListHead;
568 while (NextGpeXrupt)
569 {
570 if (NextGpeXrupt->InterruptLevel == InterruptLevel)
571 {
572 return_PTR (NextGpeXrupt);
573 }
574
575 NextGpeXrupt = NextGpeXrupt->Next;
576 }
577
578 /* Not found, must allocate a new xrupt descriptor */
579
580 GpeXrupt = ACPI_MEM_CALLOCATE (sizeof (ACPI_GPE_XRUPT_INFO));
581 if (!GpeXrupt)
582 {
583 return_PTR (NULL);
584 }
585
586 GpeXrupt->InterruptLevel = InterruptLevel;
587
588 /* Install new interrupt descriptor with spin lock */
589
590 AcpiOsAcquireLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
591 if (AcpiGbl_GpeXruptListHead)
592 {
593 NextGpeXrupt = AcpiGbl_GpeXruptListHead;
594 while (NextGpeXrupt->Next)
595 {
596 NextGpeXrupt = NextGpeXrupt->Next;
597 }
598
599 NextGpeXrupt->Next = GpeXrupt;
600 GpeXrupt->Previous = NextGpeXrupt;
601 }
602 else
603 {
604 AcpiGbl_GpeXruptListHead = GpeXrupt;
605 }
606 AcpiOsReleaseLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
607
608 /* Install new interrupt handler if not SCI_INT */
609
610 if (InterruptLevel != AcpiGbl_FADT->SciInt)
611 {
612 Status = AcpiOsInstallInterruptHandler (InterruptLevel,
613 AcpiEvGpeXruptHandler, GpeXrupt);
614 if (ACPI_FAILURE (Status))
615 {
616 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
617 "Could not install GPE interrupt handler at level 0x%X\n",
618 InterruptLevel));
619 return_PTR (NULL);
620 }
621 }
622
623 return_PTR (GpeXrupt);
624}
625
626
627/*******************************************************************************
628 *
629 * FUNCTION: AcpiEvDeleteGpeXrupt
630 *
631 * PARAMETERS: GpeXrupt - A GPE interrupt info block
632 *
633 * RETURN: Status
634 *
635 * DESCRIPTION: Remove and free a GpeXrupt block. Remove an associated
636 * interrupt handler if not the SCI interrupt.
637 *
638 ******************************************************************************/
639
640static ACPI_STATUS
641AcpiEvDeleteGpeXrupt (
642 ACPI_GPE_XRUPT_INFO *GpeXrupt)
643{
644 ACPI_STATUS Status;
645
646
647 ACPI_FUNCTION_TRACE ("EvDeleteGpeXrupt");
648
649
650 /* We never want to remove the SCI interrupt handler */
651
652 if (GpeXrupt->InterruptLevel == AcpiGbl_FADT->SciInt)
653 {
654 GpeXrupt->GpeBlockListHead = NULL;
655 return_ACPI_STATUS (AE_OK);
656 }
657
658 /* Disable this interrupt */
659
660 Status = AcpiOsRemoveInterruptHandler (GpeXrupt->InterruptLevel,
661 AcpiEvGpeXruptHandler);
662 if (ACPI_FAILURE (Status))
663 {
664 return_ACPI_STATUS (Status);
665 }
666
667 /* Unlink the interrupt block with lock */
668
669 AcpiOsAcquireLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
670 if (GpeXrupt->Previous)
671 {
672 GpeXrupt->Previous->Next = GpeXrupt->Next;
673 }
674
675 if (GpeXrupt->Next)
676 {
677 GpeXrupt->Next->Previous = GpeXrupt->Previous;
678 }
679 AcpiOsReleaseLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
680
681 /* Free the block */
682
683 ACPI_MEM_FREE (GpeXrupt);
684 return_ACPI_STATUS (AE_OK);
685}
686
687
688/*******************************************************************************
689 *
690 * FUNCTION: AcpiEvInstallGpeBlock
691 *
692 * PARAMETERS: GpeBlock - New GPE block
693 * InterruptLevel - Level to be associated with this GPE block
694 *
695 * RETURN: Status
696 *
697 * DESCRIPTION: Install new GPE block with mutex support
698 *
699 ******************************************************************************/
700
701static ACPI_STATUS
702AcpiEvInstallGpeBlock (
703 ACPI_GPE_BLOCK_INFO *GpeBlock,
704 UINT32 InterruptLevel)
705{
706 ACPI_GPE_BLOCK_INFO *NextGpeBlock;
707 ACPI_GPE_XRUPT_INFO *GpeXruptBlock;
708 ACPI_STATUS Status;
709
710
711 ACPI_FUNCTION_TRACE ("EvInstallGpeBlock");
712
713
714 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
715 if (ACPI_FAILURE (Status))
716 {
717 return_ACPI_STATUS (Status);
718 }
719
720 GpeXruptBlock = AcpiEvGetGpeXruptBlock (InterruptLevel);
721 if (!GpeXruptBlock)
722 {
723 Status = AE_NO_MEMORY;
724 goto UnlockAndExit;
725 }
726
727 /* Install the new block at the end of the list for this interrupt with lock */
728
729 AcpiOsAcquireLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
730 if (GpeXruptBlock->GpeBlockListHead)
731 {
732 NextGpeBlock = GpeXruptBlock->GpeBlockListHead;
733 while (NextGpeBlock->Next)
734 {
735 NextGpeBlock = NextGpeBlock->Next;
736 }
737
738 NextGpeBlock->Next = GpeBlock;
739 GpeBlock->Previous = NextGpeBlock;
740 }
741 else
742 {
743 GpeXruptBlock->GpeBlockListHead = GpeBlock;
744 }
745
746 GpeBlock->XruptBlock = GpeXruptBlock;
747 AcpiOsReleaseLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
748
749UnlockAndExit:
750 Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
751 return_ACPI_STATUS (Status);
752}
753
754
755/*******************************************************************************
756 *
757 * FUNCTION: AcpiEvDeleteGpeBlock
758 *
759 * PARAMETERS: GpeBlock - Existing GPE block
760 *
761 * RETURN: Status
762 *
763 * DESCRIPTION: Remove a GPE block
764 *
765 ******************************************************************************/
766
767ACPI_STATUS
768AcpiEvDeleteGpeBlock (
769 ACPI_GPE_BLOCK_INFO *GpeBlock)
770{
771 ACPI_STATUS Status;
772
773
774 ACPI_FUNCTION_TRACE ("EvInstallGpeBlock");
775
776
777 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
778 if (ACPI_FAILURE (Status))
779 {
780 return_ACPI_STATUS (Status);
781 }
782
783 /* Disable all GPEs in this block */
784
785 Status = AcpiHwDisableGpeBlock (GpeBlock->XruptBlock, GpeBlock);
786
787 if (!GpeBlock->Previous && !GpeBlock->Next)
788 {
789 /* This is the last GpeBlock on this interrupt */
790
791 Status = AcpiEvDeleteGpeXrupt (GpeBlock->XruptBlock);
792 if (ACPI_FAILURE (Status))
793 {
794 goto UnlockAndExit;
795 }
796 }
797 else
798 {
799 /* Remove the block on this interrupt with lock */
800
801 AcpiOsAcquireLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
802 if (GpeBlock->Previous)
803 {
804 GpeBlock->Previous->Next = GpeBlock->Next;
805 }
806 else
807 {
808 GpeBlock->XruptBlock->GpeBlockListHead = GpeBlock->Next;
809 }
810
811 if (GpeBlock->Next)
812 {
813 GpeBlock->Next->Previous = GpeBlock->Previous;
814 }
815 AcpiOsReleaseLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
816 }
817
818 /* Free the GpeBlock */
819
820 ACPI_MEM_FREE (GpeBlock->RegisterInfo);
821 ACPI_MEM_FREE (GpeBlock->EventInfo);
822 ACPI_MEM_FREE (GpeBlock);
823
824UnlockAndExit:
825 Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
826 return_ACPI_STATUS (Status);
827}
828
829
830/*******************************************************************************
831 *
832 * FUNCTION: AcpiEvCreateGpeInfoBlocks
833 *
834 * PARAMETERS: GpeBlock - New GPE block
835 *
836 * RETURN: Status
837 *
838 * DESCRIPTION: Create the RegisterInfo and EventInfo blocks for this GPE block
839 *
840 ******************************************************************************/
841
842static ACPI_STATUS
843AcpiEvCreateGpeInfoBlocks (
844 ACPI_GPE_BLOCK_INFO *GpeBlock)
845{
846 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo = NULL;
847 ACPI_GPE_EVENT_INFO *GpeEventInfo = NULL;
848 ACPI_GPE_EVENT_INFO *ThisEvent;
849 ACPI_GPE_REGISTER_INFO *ThisRegister;
850 ACPI_NATIVE_UINT i;
851 ACPI_NATIVE_UINT j;
852 ACPI_STATUS Status;
853
854
855 ACPI_FUNCTION_TRACE ("EvCreateGpeInfoBlocks");
856
857
858 /* Allocate the GPE register information block */
859
860 GpeRegisterInfo = ACPI_MEM_CALLOCATE (
861 (ACPI_SIZE) GpeBlock->RegisterCount *
862 sizeof (ACPI_GPE_REGISTER_INFO));
863 if (!GpeRegisterInfo)
864 {
865 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
866 "Could not allocate the GpeRegisterInfo table\n"));
867 return_ACPI_STATUS (AE_NO_MEMORY);
868 }
869
870 /*
871 * Allocate the GPE EventInfo block. There are eight distinct GPEs
872 * per register. Initialization to zeros is sufficient.
873 */
874 GpeEventInfo = ACPI_MEM_CALLOCATE (
875 ((ACPI_SIZE) GpeBlock->RegisterCount * ACPI_GPE_REGISTER_WIDTH) *
876 sizeof (ACPI_GPE_EVENT_INFO));
877 if (!GpeEventInfo)
878 {
879 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not allocate the GpeEventInfo table\n"));
880 Status = AE_NO_MEMORY;
881 goto ErrorExit;
882 }
883
884 /* Save the new Info arrays in the GPE block */
885
886 GpeBlock->RegisterInfo = GpeRegisterInfo;
887 GpeBlock->EventInfo = GpeEventInfo;
888
889 /*
890 * Initialize the GPE Register and Event structures. A goal of these
891 * tables is to hide the fact that there are two separate GPE register sets
892 * in a given gpe hardware block, the status registers occupy the first half,
893 * and the enable registers occupy the second half.
894 */
895 ThisRegister = GpeRegisterInfo;
896 ThisEvent = GpeEventInfo;
897
898 for (i = 0; i < GpeBlock->RegisterCount; i++)
899 {
900 /* Init the RegisterInfo for this GPE register (8 GPEs) */
901
902 ThisRegister->BaseGpeNumber = (UINT8) (GpeBlock->BlockBaseNumber +
903 (i * ACPI_GPE_REGISTER_WIDTH));
904
905 ACPI_STORE_ADDRESS (ThisRegister->StatusAddress.Address,
906 (ACPI_GET_ADDRESS (GpeBlock->BlockAddress.Address)
907 + i));
908
909 ACPI_STORE_ADDRESS (ThisRegister->EnableAddress.Address,
910 (ACPI_GET_ADDRESS (GpeBlock->BlockAddress.Address)
911 + i
912 + GpeBlock->RegisterCount));
913
914 ThisRegister->StatusAddress.AddressSpaceId = GpeBlock->BlockAddress.AddressSpaceId;
915 ThisRegister->EnableAddress.AddressSpaceId = GpeBlock->BlockAddress.AddressSpaceId;
916 ThisRegister->StatusAddress.RegisterBitWidth = ACPI_GPE_REGISTER_WIDTH;
917 ThisRegister->EnableAddress.RegisterBitWidth = ACPI_GPE_REGISTER_WIDTH;
918 ThisRegister->StatusAddress.RegisterBitOffset = ACPI_GPE_REGISTER_WIDTH;
919 ThisRegister->EnableAddress.RegisterBitOffset = ACPI_GPE_REGISTER_WIDTH;
920
921 /* Init the EventInfo for each GPE within this register */
922
923 for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
924 {
925 ThisEvent->RegisterBit = AcpiGbl_DecodeTo8bit[j];
926 ThisEvent->RegisterInfo = ThisRegister;
927 ThisEvent++;
928 }
929
930 /*
931 * Clear the status/enable registers. Note that status registers
932 * are cleared by writing a '1', while enable registers are cleared
933 * by writing a '0'.
934 */
935 Status = AcpiHwLowLevelWrite (ACPI_GPE_REGISTER_WIDTH, 0x00,
936 &ThisRegister->EnableAddress);
937 if (ACPI_FAILURE (Status))
938 {
939 goto ErrorExit;
940 }
941
942 Status = AcpiHwLowLevelWrite (ACPI_GPE_REGISTER_WIDTH, 0xFF,
943 &ThisRegister->StatusAddress);
944 if (ACPI_FAILURE (Status))
945 {
946 goto ErrorExit;
947 }
948
949 ThisRegister++;
950 }
951
952 return_ACPI_STATUS (AE_OK);
953
954
955ErrorExit:
956 if (GpeRegisterInfo)
957 {
958 ACPI_MEM_FREE (GpeRegisterInfo);
959 }
960 if (GpeEventInfo)
961 {
962 ACPI_MEM_FREE (GpeEventInfo);
963 }
964
965 return_ACPI_STATUS (Status);
966}
967
968
969/*******************************************************************************
970 *
971 * FUNCTION: AcpiEvCreateGpeBlock
972 *
973 * PARAMETERS: GpeDevice - Handle to the parent GPE block
974 * GpeBlockAddress - Address and SpaceID
975 * RegisterCount - Number of GPE register pairs in the block
976 * GpeBlockBaseNumber - Starting GPE number for the block
977 * InterruptLevel - H/W interrupt for the block
978 * ReturnGpeBlock - Where the new block descriptor is returned
979 *
980 * RETURN: Status
981 *
982 * DESCRIPTION: Create and Install a block of GPE registers
983 *
984 ******************************************************************************/
985
986ACPI_STATUS
987AcpiEvCreateGpeBlock (
988 ACPI_NAMESPACE_NODE *GpeDevice,
989 ACPI_GENERIC_ADDRESS *GpeBlockAddress,
990 UINT32 RegisterCount,
991 UINT8 GpeBlockBaseNumber,
992 UINT32 InterruptLevel,
993 ACPI_GPE_BLOCK_INFO **ReturnGpeBlock)
994{
995 ACPI_GPE_BLOCK_INFO *GpeBlock;
996 ACPI_GPE_EVENT_INFO *GpeEventInfo;
997 ACPI_NATIVE_UINT i;
998 ACPI_NATIVE_UINT j;
999 UINT32 WakeGpeCount;
1000 UINT32 GpeEnabledCount;
1001 ACPI_STATUS Status;
1002 ACPI_GPE_WALK_INFO GpeInfo;
1003
1004
1005 ACPI_FUNCTION_TRACE ("EvCreateGpeBlock");
1006
1007
1008 if (!RegisterCount)
1009 {
1010 return_ACPI_STATUS (AE_OK);
1011 }
1012
1013 /* Allocate a new GPE block */
1014
1015 GpeBlock = ACPI_MEM_CALLOCATE (sizeof (ACPI_GPE_BLOCK_INFO));
1016 if (!GpeBlock)
1017 {
1018 return_ACPI_STATUS (AE_NO_MEMORY);
1019 }
1020
1021 /* Initialize the new GPE block */
1022
1023 GpeBlock->RegisterCount = RegisterCount;
1024 GpeBlock->BlockBaseNumber = GpeBlockBaseNumber;
1025 GpeBlock->Node = GpeDevice;
1026
1027 ACPI_MEMCPY (&GpeBlock->BlockAddress, GpeBlockAddress, sizeof (ACPI_GENERIC_ADDRESS));
1028
1029 /* Create the RegisterInfo and EventInfo sub-structures */
1030
1031 Status = AcpiEvCreateGpeInfoBlocks (GpeBlock);
1032 if (ACPI_FAILURE (Status))
1033 {
1034 ACPI_MEM_FREE (GpeBlock);
1035 return_ACPI_STATUS (Status);
1036 }
1037
1038 /* Install the new block in the global list(s) */
1039
1040 Status = AcpiEvInstallGpeBlock (GpeBlock, InterruptLevel);
1041 if (ACPI_FAILURE (Status))
1042 {
1043 ACPI_MEM_FREE (GpeBlock);
1044 return_ACPI_STATUS (Status);
1045 }
1046
1047 /* Find all GPE methods (_Lxx, _Exx) for this block */
1048
1049 Status = AcpiNsWalkNamespace (ACPI_TYPE_METHOD, GpeDevice,
1050 ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK, AcpiEvSaveMethodInfo,
1051 GpeBlock, NULL);
1052
1053 /*
1054 * Runtime option: Should Wake GPEs be enabled at runtime? The default
1055 * is No,they should only be enabled just as the machine goes to sleep.
1056 */
1057 if (AcpiGbl_LeaveWakeGpesDisabled)
1058 {
1059 /*
1060 * Differentiate RUNTIME vs WAKE GPEs, via the _PRW control methods.
1061 * (Each GPE that has one or more _PRWs that reference it is by
1062 * definition a WAKE GPE and will not be enabled while the machine
1063 * is running.)
1064 */
1065 GpeInfo.GpeBlock = GpeBlock;
1066 GpeInfo.GpeDevice = GpeDevice;
1067
1068 Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
1069 ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, AcpiEvMatchPrwAndGpe,
1070 &GpeInfo, NULL);
1071 }
1072
1073 /*
1074 * Enable all GPEs in this block that are 1) "runtime" or "run/wake" GPEs,
1075 * and 2) have a corresponding _Lxx or _Exx method. All other GPEs must
1076 * be enabled via the AcpiEnableGpe() external interface.
1077 */
1078 WakeGpeCount = 0;
1079 GpeEnabledCount = 0;
1080
1081 for (i = 0; i < GpeBlock->RegisterCount; i++)
1082 {
1083 for (j = 0; j < 8; j++)
1084 {
1085 /* Get the info block for this particular GPE */
1086
1087 GpeEventInfo = &GpeBlock->EventInfo[(i * ACPI_GPE_REGISTER_WIDTH) + j];
1088
1089 if (((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) == ACPI_GPE_DISPATCH_METHOD) &&
1090 (GpeEventInfo->Flags & ACPI_GPE_TYPE_RUNTIME))
1091 {
1092 GpeEnabledCount++;
1093 }
1094
1095 if (GpeEventInfo->Flags & ACPI_GPE_TYPE_WAKE)
1096 {
1097 WakeGpeCount++;
1098 }
1099 }
1100 }
1101
1102 /* Dump info about this GPE block */
1103
1104 ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
| 5 *
6 *****************************************************************************/
7
8/******************************************************************************
9 *
10 * 1. Copyright Notice
11 *
12 * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp.
13 * All rights reserved.
14 *
15 * 2. License
16 *
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
20 * property rights.
21 *
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
28 *
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
54 *
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
65 * make.
66 *
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
89 * PARTICULAR PURPOSE.
90 *
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
98 * LIMITED REMEDY.
99 *
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
114 *
115 *****************************************************************************/
116
117#include "acpi.h"
118#include "acevents.h"
119#include "acnamesp.h"
120
121#define _COMPONENT ACPI_EVENTS
122 ACPI_MODULE_NAME ("evgpeblk")
123
124
125/*******************************************************************************
126 *
127 * FUNCTION: AcpiEvValidGpeEvent
128 *
129 * PARAMETERS: GpeEventInfo - Info for this GPE
130 *
131 * RETURN: TRUE if the GpeEvent is valid
132 *
133 * DESCRIPTION: Validate a GPE event. DO NOT CALL FROM INTERRUPT LEVEL.
134 * Should be called only when the GPE lists are semaphore locked
135 * and not subject to change.
136 *
137 ******************************************************************************/
138
139BOOLEAN
140AcpiEvValidGpeEvent (
141 ACPI_GPE_EVENT_INFO *GpeEventInfo)
142{
143 ACPI_GPE_XRUPT_INFO *GpeXruptBlock;
144 ACPI_GPE_BLOCK_INFO *GpeBlock;
145
146
147 ACPI_FUNCTION_ENTRY ();
148
149
150 /* No need for spin lock since we are not changing any list elements */
151
152 /* Walk the GPE interrupt levels */
153
154 GpeXruptBlock = AcpiGbl_GpeXruptListHead;
155 while (GpeXruptBlock)
156 {
157 GpeBlock = GpeXruptBlock->GpeBlockListHead;
158
159 /* Walk the GPE blocks on this interrupt level */
160
161 while (GpeBlock)
162 {
163 if ((&GpeBlock->EventInfo[0] <= GpeEventInfo) &&
164 (&GpeBlock->EventInfo[((ACPI_SIZE) GpeBlock->RegisterCount) * 8] > GpeEventInfo))
165 {
166 return (TRUE);
167 }
168
169 GpeBlock = GpeBlock->Next;
170 }
171
172 GpeXruptBlock = GpeXruptBlock->Next;
173 }
174
175 return (FALSE);
176}
177
178
179/*******************************************************************************
180 *
181 * FUNCTION: AcpiEvWalkGpeList
182 *
183 * PARAMETERS: GpeWalkCallback - Routine called for each GPE block
184 *
185 * RETURN: Status
186 *
187 * DESCRIPTION: Walk the GPE lists.
188 * FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
189 *
190 ******************************************************************************/
191
192ACPI_STATUS
193AcpiEvWalkGpeList (
194 ACPI_GPE_CALLBACK GpeWalkCallback)
195{
196 ACPI_GPE_BLOCK_INFO *GpeBlock;
197 ACPI_GPE_XRUPT_INFO *GpeXruptInfo;
198 ACPI_STATUS Status = AE_OK;
199
200
201 ACPI_FUNCTION_TRACE ("EvWalkGpeList");
202
203
204 AcpiOsAcquireLock (AcpiGbl_GpeLock, ACPI_ISR);
205
206 /* Walk the interrupt level descriptor list */
207
208 GpeXruptInfo = AcpiGbl_GpeXruptListHead;
209 while (GpeXruptInfo)
210 {
211 /* Walk all Gpe Blocks attached to this interrupt level */
212
213 GpeBlock = GpeXruptInfo->GpeBlockListHead;
214 while (GpeBlock)
215 {
216 /* One callback per GPE block */
217
218 Status = GpeWalkCallback (GpeXruptInfo, GpeBlock);
219 if (ACPI_FAILURE (Status))
220 {
221 goto UnlockAndExit;
222 }
223
224 GpeBlock = GpeBlock->Next;
225 }
226
227 GpeXruptInfo = GpeXruptInfo->Next;
228 }
229
230UnlockAndExit:
231 AcpiOsReleaseLock (AcpiGbl_GpeLock, ACPI_ISR);
232 return_ACPI_STATUS (Status);
233}
234
235
236/******************************************************************************
237 *
238 * FUNCTION: AcpiEvDeleteGpeHandlers
239 *
240 * PARAMETERS: GpeXruptInfo - GPE Interrupt info
241 * GpeBlock - Gpe Block info
242 *
243 * RETURN: Status
244 *
245 * DESCRIPTION: Delete all Handler objects found in the GPE data structs.
246 * Used only prior to termination.
247 *
248 ******************************************************************************/
249
250ACPI_STATUS
251AcpiEvDeleteGpeHandlers (
252 ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
253 ACPI_GPE_BLOCK_INFO *GpeBlock)
254{
255 ACPI_GPE_EVENT_INFO *GpeEventInfo;
256 ACPI_NATIVE_UINT i;
257 ACPI_NATIVE_UINT j;
258
259
260 ACPI_FUNCTION_TRACE ("EvDeleteGpeHandlers");
261
262
263 /* Examine each GPE Register within the block */
264
265 for (i = 0; i < GpeBlock->RegisterCount; i++)
266 {
267 /* Now look at the individual GPEs in this byte register */
268
269 for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
270 {
271 GpeEventInfo = &GpeBlock->EventInfo[(i * ACPI_GPE_REGISTER_WIDTH) + j];
272
273 if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) == ACPI_GPE_DISPATCH_HANDLER)
274 {
275 ACPI_MEM_FREE (GpeEventInfo->Dispatch.Handler);
276 GpeEventInfo->Dispatch.Handler = NULL;
277 GpeEventInfo->Flags &= ~ACPI_GPE_DISPATCH_MASK;
278 }
279 }
280 }
281
282 return_ACPI_STATUS (AE_OK);
283}
284
285
286/*******************************************************************************
287 *
288 * FUNCTION: AcpiEvSaveMethodInfo
289 *
290 * PARAMETERS: Callback from WalkNamespace
291 *
292 * RETURN: Status
293 *
294 * DESCRIPTION: Called from AcpiWalkNamespace. Expects each object to be a
295 * control method under the _GPE portion of the namespace.
296 * Extract the name and GPE type from the object, saving this
297 * information for quick lookup during GPE dispatch
298 *
299 * The name of each GPE control method is of the form:
300 * "_Lxx" or "_Exx"
301 * Where:
302 * L - means that the GPE is level triggered
303 * E - means that the GPE is edge triggered
304 * xx - is the GPE number [in HEX]
305 *
306 ******************************************************************************/
307
308static ACPI_STATUS
309AcpiEvSaveMethodInfo (
310 ACPI_HANDLE ObjHandle,
311 UINT32 Level,
312 void *ObjDesc,
313 void **ReturnValue)
314{
315 ACPI_GPE_BLOCK_INFO *GpeBlock = (void *) ObjDesc;
316 ACPI_GPE_EVENT_INFO *GpeEventInfo;
317 UINT32 GpeNumber;
318 char Name[ACPI_NAME_SIZE + 1];
319 UINT8 Type;
320 ACPI_STATUS Status;
321
322
323 ACPI_FUNCTION_TRACE ("EvSaveMethodInfo");
324
325
326 /*
327 * _Lxx and _Exx GPE method support
328 *
329 * 1) Extract the name from the object and convert to a string
330 */
331 ACPI_MOVE_32_TO_32 (Name,
332 &((ACPI_NAMESPACE_NODE *) ObjHandle)->Name.Integer);
333 Name[ACPI_NAME_SIZE] = 0;
334
335 /*
336 * 2) Edge/Level determination is based on the 2nd character
337 * of the method name
338 *
339 * NOTE: Default GPE type is RUNTIME. May be changed later to WAKE
340 * if a _PRW object is found that points to this GPE.
341 */
342 switch (Name[1])
343 {
344 case 'L':
345 Type = ACPI_GPE_LEVEL_TRIGGERED;
346 break;
347
348 case 'E':
349 Type = ACPI_GPE_EDGE_TRIGGERED;
350 break;
351
352 default:
353 /* Unknown method type, just ignore it! */
354
355 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
356 "Unknown GPE method type: %s (name not of form _Lxx or _Exx)\n",
357 Name));
358 return_ACPI_STATUS (AE_OK);
359 }
360
361 /* Convert the last two characters of the name to the GPE Number */
362
363 GpeNumber = ACPI_STRTOUL (&Name[2], NULL, 16);
364 if (GpeNumber == ACPI_UINT32_MAX)
365 {
366 /* Conversion failed; invalid method, just ignore it */
367
368 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
369 "Could not extract GPE number from name: %s (name is not of form _Lxx or _Exx)\n",
370 Name));
371 return_ACPI_STATUS (AE_OK);
372 }
373
374 /* Ensure that we have a valid GPE number for this GPE block */
375
376 if ((GpeNumber < GpeBlock->BlockBaseNumber) ||
377 (GpeNumber >= (GpeBlock->BlockBaseNumber + (GpeBlock->RegisterCount * 8))))
378 {
379 /*
380 * Not valid for this GPE block, just ignore it
381 * However, it may be valid for a different GPE block, since GPE0 and GPE1
382 * methods both appear under \_GPE.
383 */
384 return_ACPI_STATUS (AE_OK);
385 }
386
387 /*
388 * Now we can add this information to the GpeEventInfo block
389 * for use during dispatch of this GPE. Default type is RUNTIME, although
390 * this may change when the _PRW methods are executed later.
391 */
392 GpeEventInfo = &GpeBlock->EventInfo[GpeNumber - GpeBlock->BlockBaseNumber];
393
394 GpeEventInfo->Flags = (UINT8) (Type | ACPI_GPE_DISPATCH_METHOD |
395 ACPI_GPE_TYPE_RUNTIME);
396
397 GpeEventInfo->Dispatch.MethodNode = (ACPI_NAMESPACE_NODE *) ObjHandle;
398
399 /* Update enable mask, but don't enable the HW GPE as of yet */
400
401 Status = AcpiEvEnableGpe (GpeEventInfo, FALSE);
402
403 ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
404 "Registered GPE method %s as GPE number 0x%.2X\n",
405 Name, GpeNumber));
406 return_ACPI_STATUS (Status);
407}
408
409
410/*******************************************************************************
411 *
412 * FUNCTION: AcpiEvMatchPrwAndGpe
413 *
414 * PARAMETERS: Callback from WalkNamespace
415 *
416 * RETURN: Status
417 *
418 * DESCRIPTION: Called from AcpiWalkNamespace. Expects each object to be a
419 * Device. Run the _PRW method. If present, extract the GPE
420 * number and mark the GPE as a WAKE GPE.
421 *
422 ******************************************************************************/
423
424static ACPI_STATUS
425AcpiEvMatchPrwAndGpe (
426 ACPI_HANDLE ObjHandle,
427 UINT32 Level,
428 void *Info,
429 void **ReturnValue)
430{
431 ACPI_GPE_WALK_INFO *GpeInfo = (void *) Info;
432 ACPI_NAMESPACE_NODE *GpeDevice;
433 ACPI_GPE_BLOCK_INFO *GpeBlock;
434 ACPI_NAMESPACE_NODE *TargetGpeDevice;
435 ACPI_GPE_EVENT_INFO *GpeEventInfo;
436 ACPI_OPERAND_OBJECT *PkgDesc;
437 ACPI_OPERAND_OBJECT *ObjDesc;
438 UINT32 GpeNumber;
439 ACPI_STATUS Status;
440
441
442 ACPI_FUNCTION_TRACE ("EvMatchPrwAndGpe");
443
444
445 /* Check for a _PRW method under this device */
446
447 Status = AcpiUtEvaluateObject (ObjHandle, METHOD_NAME__PRW,
448 ACPI_BTYPE_PACKAGE, &PkgDesc);
449 if (ACPI_FAILURE (Status))
450 {
451 /* Ignore all errors from _PRW, we don't want to abort the subsystem */
452
453 return_ACPI_STATUS (AE_OK);
454 }
455
456 /* The returned _PRW package must have at least two elements */
457
458 if (PkgDesc->Package.Count < 2)
459 {
460 goto Cleanup;
461 }
462
463 /* Extract pointers from the input context */
464
465 GpeDevice = GpeInfo->GpeDevice;
466 GpeBlock = GpeInfo->GpeBlock;
467
468 /*
469 * The _PRW object must return a package, we are only interested
470 * in the first element
471 */
472 ObjDesc = PkgDesc->Package.Elements[0];
473
474 if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_INTEGER)
475 {
476 /* Use FADT-defined GPE device (from definition of _PRW) */
477
478 TargetGpeDevice = AcpiGbl_FadtGpeDevice;
479
480 /* Integer is the GPE number in the FADT described GPE blocks */
481
482 GpeNumber = (UINT32) ObjDesc->Integer.Value;
483 }
484 else if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_PACKAGE)
485 {
486 /* Package contains a GPE reference and GPE number within a GPE block */
487
488 if ((ObjDesc->Package.Count < 2) ||
489 (ACPI_GET_OBJECT_TYPE (ObjDesc->Package.Elements[0]) != ACPI_TYPE_LOCAL_REFERENCE) ||
490 (ACPI_GET_OBJECT_TYPE (ObjDesc->Package.Elements[1]) != ACPI_TYPE_INTEGER))
491 {
492 goto Cleanup;
493 }
494
495 /* Get GPE block reference and decode */
496
497 TargetGpeDevice = ObjDesc->Package.Elements[0]->Reference.Node;
498 GpeNumber = (UINT32) ObjDesc->Package.Elements[1]->Integer.Value;
499 }
500 else
501 {
502 /* Unknown type, just ignore it */
503
504 goto Cleanup;
505 }
506
507 /*
508 * Is this GPE within this block?
509 *
510 * TRUE iff these conditions are true:
511 * 1) The GPE devices match.
512 * 2) The GPE index(number) is within the range of the Gpe Block
513 * associated with the GPE device.
514 */
515 if ((GpeDevice == TargetGpeDevice) &&
516 (GpeNumber >= GpeBlock->BlockBaseNumber) &&
517 (GpeNumber < GpeBlock->BlockBaseNumber + (GpeBlock->RegisterCount * 8)))
518 {
519 GpeEventInfo = &GpeBlock->EventInfo[GpeNumber - GpeBlock->BlockBaseNumber];
520
521 /* Mark GPE for WAKE-ONLY but WAKE_DISABLED */
522
523 GpeEventInfo->Flags &= ~(ACPI_GPE_WAKE_ENABLED | ACPI_GPE_RUN_ENABLED);
524 Status = AcpiEvSetGpeType (GpeEventInfo, ACPI_GPE_TYPE_WAKE);
525 if (ACPI_FAILURE (Status))
526 {
527 goto Cleanup;
528 }
529 Status = AcpiEvUpdateGpeEnableMasks (GpeEventInfo, ACPI_GPE_DISABLE);
530 }
531
532Cleanup:
533 AcpiUtRemoveReference (PkgDesc);
534 return_ACPI_STATUS (AE_OK);
535}
536
537
538/*******************************************************************************
539 *
540 * FUNCTION: AcpiEvGetGpeXruptBlock
541 *
542 * PARAMETERS: InterruptLevel - Interrupt for a GPE block
543 *
544 * RETURN: A GPE interrupt block
545 *
546 * DESCRIPTION: Get or Create a GPE interrupt block. There is one interrupt
547 * block per unique interrupt level used for GPEs.
548 * Should be called only when the GPE lists are semaphore locked
549 * and not subject to change.
550 *
551 ******************************************************************************/
552
553static ACPI_GPE_XRUPT_INFO *
554AcpiEvGetGpeXruptBlock (
555 UINT32 InterruptLevel)
556{
557 ACPI_GPE_XRUPT_INFO *NextGpeXrupt;
558 ACPI_GPE_XRUPT_INFO *GpeXrupt;
559 ACPI_STATUS Status;
560
561
562 ACPI_FUNCTION_TRACE ("EvGetGpeXruptBlock");
563
564
565 /* No need for spin lock since we are not changing any list elements here */
566
567 NextGpeXrupt = AcpiGbl_GpeXruptListHead;
568 while (NextGpeXrupt)
569 {
570 if (NextGpeXrupt->InterruptLevel == InterruptLevel)
571 {
572 return_PTR (NextGpeXrupt);
573 }
574
575 NextGpeXrupt = NextGpeXrupt->Next;
576 }
577
578 /* Not found, must allocate a new xrupt descriptor */
579
580 GpeXrupt = ACPI_MEM_CALLOCATE (sizeof (ACPI_GPE_XRUPT_INFO));
581 if (!GpeXrupt)
582 {
583 return_PTR (NULL);
584 }
585
586 GpeXrupt->InterruptLevel = InterruptLevel;
587
588 /* Install new interrupt descriptor with spin lock */
589
590 AcpiOsAcquireLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
591 if (AcpiGbl_GpeXruptListHead)
592 {
593 NextGpeXrupt = AcpiGbl_GpeXruptListHead;
594 while (NextGpeXrupt->Next)
595 {
596 NextGpeXrupt = NextGpeXrupt->Next;
597 }
598
599 NextGpeXrupt->Next = GpeXrupt;
600 GpeXrupt->Previous = NextGpeXrupt;
601 }
602 else
603 {
604 AcpiGbl_GpeXruptListHead = GpeXrupt;
605 }
606 AcpiOsReleaseLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
607
608 /* Install new interrupt handler if not SCI_INT */
609
610 if (InterruptLevel != AcpiGbl_FADT->SciInt)
611 {
612 Status = AcpiOsInstallInterruptHandler (InterruptLevel,
613 AcpiEvGpeXruptHandler, GpeXrupt);
614 if (ACPI_FAILURE (Status))
615 {
616 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
617 "Could not install GPE interrupt handler at level 0x%X\n",
618 InterruptLevel));
619 return_PTR (NULL);
620 }
621 }
622
623 return_PTR (GpeXrupt);
624}
625
626
627/*******************************************************************************
628 *
629 * FUNCTION: AcpiEvDeleteGpeXrupt
630 *
631 * PARAMETERS: GpeXrupt - A GPE interrupt info block
632 *
633 * RETURN: Status
634 *
635 * DESCRIPTION: Remove and free a GpeXrupt block. Remove an associated
636 * interrupt handler if not the SCI interrupt.
637 *
638 ******************************************************************************/
639
640static ACPI_STATUS
641AcpiEvDeleteGpeXrupt (
642 ACPI_GPE_XRUPT_INFO *GpeXrupt)
643{
644 ACPI_STATUS Status;
645
646
647 ACPI_FUNCTION_TRACE ("EvDeleteGpeXrupt");
648
649
650 /* We never want to remove the SCI interrupt handler */
651
652 if (GpeXrupt->InterruptLevel == AcpiGbl_FADT->SciInt)
653 {
654 GpeXrupt->GpeBlockListHead = NULL;
655 return_ACPI_STATUS (AE_OK);
656 }
657
658 /* Disable this interrupt */
659
660 Status = AcpiOsRemoveInterruptHandler (GpeXrupt->InterruptLevel,
661 AcpiEvGpeXruptHandler);
662 if (ACPI_FAILURE (Status))
663 {
664 return_ACPI_STATUS (Status);
665 }
666
667 /* Unlink the interrupt block with lock */
668
669 AcpiOsAcquireLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
670 if (GpeXrupt->Previous)
671 {
672 GpeXrupt->Previous->Next = GpeXrupt->Next;
673 }
674
675 if (GpeXrupt->Next)
676 {
677 GpeXrupt->Next->Previous = GpeXrupt->Previous;
678 }
679 AcpiOsReleaseLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
680
681 /* Free the block */
682
683 ACPI_MEM_FREE (GpeXrupt);
684 return_ACPI_STATUS (AE_OK);
685}
686
687
688/*******************************************************************************
689 *
690 * FUNCTION: AcpiEvInstallGpeBlock
691 *
692 * PARAMETERS: GpeBlock - New GPE block
693 * InterruptLevel - Level to be associated with this GPE block
694 *
695 * RETURN: Status
696 *
697 * DESCRIPTION: Install new GPE block with mutex support
698 *
699 ******************************************************************************/
700
701static ACPI_STATUS
702AcpiEvInstallGpeBlock (
703 ACPI_GPE_BLOCK_INFO *GpeBlock,
704 UINT32 InterruptLevel)
705{
706 ACPI_GPE_BLOCK_INFO *NextGpeBlock;
707 ACPI_GPE_XRUPT_INFO *GpeXruptBlock;
708 ACPI_STATUS Status;
709
710
711 ACPI_FUNCTION_TRACE ("EvInstallGpeBlock");
712
713
714 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
715 if (ACPI_FAILURE (Status))
716 {
717 return_ACPI_STATUS (Status);
718 }
719
720 GpeXruptBlock = AcpiEvGetGpeXruptBlock (InterruptLevel);
721 if (!GpeXruptBlock)
722 {
723 Status = AE_NO_MEMORY;
724 goto UnlockAndExit;
725 }
726
727 /* Install the new block at the end of the list for this interrupt with lock */
728
729 AcpiOsAcquireLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
730 if (GpeXruptBlock->GpeBlockListHead)
731 {
732 NextGpeBlock = GpeXruptBlock->GpeBlockListHead;
733 while (NextGpeBlock->Next)
734 {
735 NextGpeBlock = NextGpeBlock->Next;
736 }
737
738 NextGpeBlock->Next = GpeBlock;
739 GpeBlock->Previous = NextGpeBlock;
740 }
741 else
742 {
743 GpeXruptBlock->GpeBlockListHead = GpeBlock;
744 }
745
746 GpeBlock->XruptBlock = GpeXruptBlock;
747 AcpiOsReleaseLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
748
749UnlockAndExit:
750 Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
751 return_ACPI_STATUS (Status);
752}
753
754
755/*******************************************************************************
756 *
757 * FUNCTION: AcpiEvDeleteGpeBlock
758 *
759 * PARAMETERS: GpeBlock - Existing GPE block
760 *
761 * RETURN: Status
762 *
763 * DESCRIPTION: Remove a GPE block
764 *
765 ******************************************************************************/
766
767ACPI_STATUS
768AcpiEvDeleteGpeBlock (
769 ACPI_GPE_BLOCK_INFO *GpeBlock)
770{
771 ACPI_STATUS Status;
772
773
774 ACPI_FUNCTION_TRACE ("EvInstallGpeBlock");
775
776
777 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
778 if (ACPI_FAILURE (Status))
779 {
780 return_ACPI_STATUS (Status);
781 }
782
783 /* Disable all GPEs in this block */
784
785 Status = AcpiHwDisableGpeBlock (GpeBlock->XruptBlock, GpeBlock);
786
787 if (!GpeBlock->Previous && !GpeBlock->Next)
788 {
789 /* This is the last GpeBlock on this interrupt */
790
791 Status = AcpiEvDeleteGpeXrupt (GpeBlock->XruptBlock);
792 if (ACPI_FAILURE (Status))
793 {
794 goto UnlockAndExit;
795 }
796 }
797 else
798 {
799 /* Remove the block on this interrupt with lock */
800
801 AcpiOsAcquireLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
802 if (GpeBlock->Previous)
803 {
804 GpeBlock->Previous->Next = GpeBlock->Next;
805 }
806 else
807 {
808 GpeBlock->XruptBlock->GpeBlockListHead = GpeBlock->Next;
809 }
810
811 if (GpeBlock->Next)
812 {
813 GpeBlock->Next->Previous = GpeBlock->Previous;
814 }
815 AcpiOsReleaseLock (AcpiGbl_GpeLock, ACPI_NOT_ISR);
816 }
817
818 /* Free the GpeBlock */
819
820 ACPI_MEM_FREE (GpeBlock->RegisterInfo);
821 ACPI_MEM_FREE (GpeBlock->EventInfo);
822 ACPI_MEM_FREE (GpeBlock);
823
824UnlockAndExit:
825 Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
826 return_ACPI_STATUS (Status);
827}
828
829
830/*******************************************************************************
831 *
832 * FUNCTION: AcpiEvCreateGpeInfoBlocks
833 *
834 * PARAMETERS: GpeBlock - New GPE block
835 *
836 * RETURN: Status
837 *
838 * DESCRIPTION: Create the RegisterInfo and EventInfo blocks for this GPE block
839 *
840 ******************************************************************************/
841
842static ACPI_STATUS
843AcpiEvCreateGpeInfoBlocks (
844 ACPI_GPE_BLOCK_INFO *GpeBlock)
845{
846 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo = NULL;
847 ACPI_GPE_EVENT_INFO *GpeEventInfo = NULL;
848 ACPI_GPE_EVENT_INFO *ThisEvent;
849 ACPI_GPE_REGISTER_INFO *ThisRegister;
850 ACPI_NATIVE_UINT i;
851 ACPI_NATIVE_UINT j;
852 ACPI_STATUS Status;
853
854
855 ACPI_FUNCTION_TRACE ("EvCreateGpeInfoBlocks");
856
857
858 /* Allocate the GPE register information block */
859
860 GpeRegisterInfo = ACPI_MEM_CALLOCATE (
861 (ACPI_SIZE) GpeBlock->RegisterCount *
862 sizeof (ACPI_GPE_REGISTER_INFO));
863 if (!GpeRegisterInfo)
864 {
865 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
866 "Could not allocate the GpeRegisterInfo table\n"));
867 return_ACPI_STATUS (AE_NO_MEMORY);
868 }
869
870 /*
871 * Allocate the GPE EventInfo block. There are eight distinct GPEs
872 * per register. Initialization to zeros is sufficient.
873 */
874 GpeEventInfo = ACPI_MEM_CALLOCATE (
875 ((ACPI_SIZE) GpeBlock->RegisterCount * ACPI_GPE_REGISTER_WIDTH) *
876 sizeof (ACPI_GPE_EVENT_INFO));
877 if (!GpeEventInfo)
878 {
879 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not allocate the GpeEventInfo table\n"));
880 Status = AE_NO_MEMORY;
881 goto ErrorExit;
882 }
883
884 /* Save the new Info arrays in the GPE block */
885
886 GpeBlock->RegisterInfo = GpeRegisterInfo;
887 GpeBlock->EventInfo = GpeEventInfo;
888
889 /*
890 * Initialize the GPE Register and Event structures. A goal of these
891 * tables is to hide the fact that there are two separate GPE register sets
892 * in a given gpe hardware block, the status registers occupy the first half,
893 * and the enable registers occupy the second half.
894 */
895 ThisRegister = GpeRegisterInfo;
896 ThisEvent = GpeEventInfo;
897
898 for (i = 0; i < GpeBlock->RegisterCount; i++)
899 {
900 /* Init the RegisterInfo for this GPE register (8 GPEs) */
901
902 ThisRegister->BaseGpeNumber = (UINT8) (GpeBlock->BlockBaseNumber +
903 (i * ACPI_GPE_REGISTER_WIDTH));
904
905 ACPI_STORE_ADDRESS (ThisRegister->StatusAddress.Address,
906 (ACPI_GET_ADDRESS (GpeBlock->BlockAddress.Address)
907 + i));
908
909 ACPI_STORE_ADDRESS (ThisRegister->EnableAddress.Address,
910 (ACPI_GET_ADDRESS (GpeBlock->BlockAddress.Address)
911 + i
912 + GpeBlock->RegisterCount));
913
914 ThisRegister->StatusAddress.AddressSpaceId = GpeBlock->BlockAddress.AddressSpaceId;
915 ThisRegister->EnableAddress.AddressSpaceId = GpeBlock->BlockAddress.AddressSpaceId;
916 ThisRegister->StatusAddress.RegisterBitWidth = ACPI_GPE_REGISTER_WIDTH;
917 ThisRegister->EnableAddress.RegisterBitWidth = ACPI_GPE_REGISTER_WIDTH;
918 ThisRegister->StatusAddress.RegisterBitOffset = ACPI_GPE_REGISTER_WIDTH;
919 ThisRegister->EnableAddress.RegisterBitOffset = ACPI_GPE_REGISTER_WIDTH;
920
921 /* Init the EventInfo for each GPE within this register */
922
923 for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
924 {
925 ThisEvent->RegisterBit = AcpiGbl_DecodeTo8bit[j];
926 ThisEvent->RegisterInfo = ThisRegister;
927 ThisEvent++;
928 }
929
930 /*
931 * Clear the status/enable registers. Note that status registers
932 * are cleared by writing a '1', while enable registers are cleared
933 * by writing a '0'.
934 */
935 Status = AcpiHwLowLevelWrite (ACPI_GPE_REGISTER_WIDTH, 0x00,
936 &ThisRegister->EnableAddress);
937 if (ACPI_FAILURE (Status))
938 {
939 goto ErrorExit;
940 }
941
942 Status = AcpiHwLowLevelWrite (ACPI_GPE_REGISTER_WIDTH, 0xFF,
943 &ThisRegister->StatusAddress);
944 if (ACPI_FAILURE (Status))
945 {
946 goto ErrorExit;
947 }
948
949 ThisRegister++;
950 }
951
952 return_ACPI_STATUS (AE_OK);
953
954
955ErrorExit:
956 if (GpeRegisterInfo)
957 {
958 ACPI_MEM_FREE (GpeRegisterInfo);
959 }
960 if (GpeEventInfo)
961 {
962 ACPI_MEM_FREE (GpeEventInfo);
963 }
964
965 return_ACPI_STATUS (Status);
966}
967
968
969/*******************************************************************************
970 *
971 * FUNCTION: AcpiEvCreateGpeBlock
972 *
973 * PARAMETERS: GpeDevice - Handle to the parent GPE block
974 * GpeBlockAddress - Address and SpaceID
975 * RegisterCount - Number of GPE register pairs in the block
976 * GpeBlockBaseNumber - Starting GPE number for the block
977 * InterruptLevel - H/W interrupt for the block
978 * ReturnGpeBlock - Where the new block descriptor is returned
979 *
980 * RETURN: Status
981 *
982 * DESCRIPTION: Create and Install a block of GPE registers
983 *
984 ******************************************************************************/
985
986ACPI_STATUS
987AcpiEvCreateGpeBlock (
988 ACPI_NAMESPACE_NODE *GpeDevice,
989 ACPI_GENERIC_ADDRESS *GpeBlockAddress,
990 UINT32 RegisterCount,
991 UINT8 GpeBlockBaseNumber,
992 UINT32 InterruptLevel,
993 ACPI_GPE_BLOCK_INFO **ReturnGpeBlock)
994{
995 ACPI_GPE_BLOCK_INFO *GpeBlock;
996 ACPI_GPE_EVENT_INFO *GpeEventInfo;
997 ACPI_NATIVE_UINT i;
998 ACPI_NATIVE_UINT j;
999 UINT32 WakeGpeCount;
1000 UINT32 GpeEnabledCount;
1001 ACPI_STATUS Status;
1002 ACPI_GPE_WALK_INFO GpeInfo;
1003
1004
1005 ACPI_FUNCTION_TRACE ("EvCreateGpeBlock");
1006
1007
1008 if (!RegisterCount)
1009 {
1010 return_ACPI_STATUS (AE_OK);
1011 }
1012
1013 /* Allocate a new GPE block */
1014
1015 GpeBlock = ACPI_MEM_CALLOCATE (sizeof (ACPI_GPE_BLOCK_INFO));
1016 if (!GpeBlock)
1017 {
1018 return_ACPI_STATUS (AE_NO_MEMORY);
1019 }
1020
1021 /* Initialize the new GPE block */
1022
1023 GpeBlock->RegisterCount = RegisterCount;
1024 GpeBlock->BlockBaseNumber = GpeBlockBaseNumber;
1025 GpeBlock->Node = GpeDevice;
1026
1027 ACPI_MEMCPY (&GpeBlock->BlockAddress, GpeBlockAddress, sizeof (ACPI_GENERIC_ADDRESS));
1028
1029 /* Create the RegisterInfo and EventInfo sub-structures */
1030
1031 Status = AcpiEvCreateGpeInfoBlocks (GpeBlock);
1032 if (ACPI_FAILURE (Status))
1033 {
1034 ACPI_MEM_FREE (GpeBlock);
1035 return_ACPI_STATUS (Status);
1036 }
1037
1038 /* Install the new block in the global list(s) */
1039
1040 Status = AcpiEvInstallGpeBlock (GpeBlock, InterruptLevel);
1041 if (ACPI_FAILURE (Status))
1042 {
1043 ACPI_MEM_FREE (GpeBlock);
1044 return_ACPI_STATUS (Status);
1045 }
1046
1047 /* Find all GPE methods (_Lxx, _Exx) for this block */
1048
1049 Status = AcpiNsWalkNamespace (ACPI_TYPE_METHOD, GpeDevice,
1050 ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK, AcpiEvSaveMethodInfo,
1051 GpeBlock, NULL);
1052
1053 /*
1054 * Runtime option: Should Wake GPEs be enabled at runtime? The default
1055 * is No,they should only be enabled just as the machine goes to sleep.
1056 */
1057 if (AcpiGbl_LeaveWakeGpesDisabled)
1058 {
1059 /*
1060 * Differentiate RUNTIME vs WAKE GPEs, via the _PRW control methods.
1061 * (Each GPE that has one or more _PRWs that reference it is by
1062 * definition a WAKE GPE and will not be enabled while the machine
1063 * is running.)
1064 */
1065 GpeInfo.GpeBlock = GpeBlock;
1066 GpeInfo.GpeDevice = GpeDevice;
1067
1068 Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
1069 ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, AcpiEvMatchPrwAndGpe,
1070 &GpeInfo, NULL);
1071 }
1072
1073 /*
1074 * Enable all GPEs in this block that are 1) "runtime" or "run/wake" GPEs,
1075 * and 2) have a corresponding _Lxx or _Exx method. All other GPEs must
1076 * be enabled via the AcpiEnableGpe() external interface.
1077 */
1078 WakeGpeCount = 0;
1079 GpeEnabledCount = 0;
1080
1081 for (i = 0; i < GpeBlock->RegisterCount; i++)
1082 {
1083 for (j = 0; j < 8; j++)
1084 {
1085 /* Get the info block for this particular GPE */
1086
1087 GpeEventInfo = &GpeBlock->EventInfo[(i * ACPI_GPE_REGISTER_WIDTH) + j];
1088
1089 if (((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) == ACPI_GPE_DISPATCH_METHOD) &&
1090 (GpeEventInfo->Flags & ACPI_GPE_TYPE_RUNTIME))
1091 {
1092 GpeEnabledCount++;
1093 }
1094
1095 if (GpeEventInfo->Flags & ACPI_GPE_TYPE_WAKE)
1096 {
1097 WakeGpeCount++;
1098 }
1099 }
1100 }
1101
1102 /* Dump info about this GPE block */
1103
1104 ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
|
1107 (UINT32) (GpeBlock->BlockBaseNumber +
1108 ((GpeBlock->RegisterCount * ACPI_GPE_REGISTER_WIDTH) -1)),
1109 GpeDevice->Name.Ascii,
1110 GpeBlock->RegisterCount,
1111 ACPI_FORMAT_UINT64 (ACPI_GET_ADDRESS (GpeBlock->BlockAddress.Address)),
1112 InterruptLevel));
1113
1114
1115 /* Enable all valid GPEs found above */
1116
1117 Status = AcpiHwEnableRuntimeGpeBlock (NULL, GpeBlock);
1118
1119 ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
1120 "Found %u Wake, Enabled %u Runtime GPEs in this block\n",
1121 WakeGpeCount, GpeEnabledCount));
1122
1123 /* Return the new block */
1124
1125 if (ReturnGpeBlock)
1126 {
1127 (*ReturnGpeBlock) = GpeBlock;
1128 }
1129
1130 return_ACPI_STATUS (AE_OK);
1131}
1132
1133
1134/*******************************************************************************
1135 *
1136 * FUNCTION: AcpiEvGpeInitialize
1137 *
1138 * PARAMETERS: None
1139 *
1140 * RETURN: Status
1141 *
1142 * DESCRIPTION: Initialize the GPE data structures
1143 *
1144 ******************************************************************************/
1145
1146ACPI_STATUS
1147AcpiEvGpeInitialize (
1148 void)
1149{
1150 UINT32 RegisterCount0 = 0;
1151 UINT32 RegisterCount1 = 0;
1152 UINT32 GpeNumberMax = 0;
1153 ACPI_STATUS Status;
1154
1155
1156 ACPI_FUNCTION_TRACE ("EvGpeInitialize");
1157
1158
1159 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
1160 if (ACPI_FAILURE (Status))
1161 {
1162 return_ACPI_STATUS (Status);
1163 }
1164
1165 /*
1166 * Initialize the GPE Block(s) defined in the FADT
1167 *
1168 * Why the GPE register block lengths are divided by 2: From the ACPI Spec,
1169 * section "General-Purpose Event Registers", we have:
1170 *
1171 * "Each register block contains two registers of equal length
1172 * GPEx_STS and GPEx_EN (where x is 0 or 1). The length of the
1173 * GPE0_STS and GPE0_EN registers is equal to half the GPE0_LEN
1174 * The length of the GPE1_STS and GPE1_EN registers is equal to
1175 * half the GPE1_LEN. If a generic register block is not supported
1176 * then its respective block pointer and block length values in the
1177 * FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need
1178 * to be the same size."
1179 */
1180
1181 /*
1182 * Determine the maximum GPE number for this machine.
1183 *
1184 * Note: both GPE0 and GPE1 are optional, and either can exist without
1185 * the other.
1186 *
1187 * If EITHER the register length OR the block address are zero, then that
1188 * particular block is not supported.
1189 */
1190 if (AcpiGbl_FADT->Gpe0BlkLen &&
1191 ACPI_GET_ADDRESS (AcpiGbl_FADT->XGpe0Blk.Address))
1192 {
1193 /* GPE block 0 exists (has both length and address > 0) */
1194
1195 RegisterCount0 = (UINT16) (AcpiGbl_FADT->Gpe0BlkLen / 2);
1196
1197 GpeNumberMax = (RegisterCount0 * ACPI_GPE_REGISTER_WIDTH) - 1;
1198
1199 /* Install GPE Block 0 */
1200
1201 Status = AcpiEvCreateGpeBlock (AcpiGbl_FadtGpeDevice, &AcpiGbl_FADT->XGpe0Blk,
1202 RegisterCount0, 0, AcpiGbl_FADT->SciInt, &AcpiGbl_GpeFadtBlocks[0]);
1203
1204 if (ACPI_FAILURE (Status))
1205 {
1206 ACPI_REPORT_ERROR ((
1207 "Could not create GPE Block 0, %s\n",
1208 AcpiFormatException (Status)));
1209 }
1210 }
1211
1212 if (AcpiGbl_FADT->Gpe1BlkLen &&
1213 ACPI_GET_ADDRESS (AcpiGbl_FADT->XGpe1Blk.Address))
1214 {
1215 /* GPE block 1 exists (has both length and address > 0) */
1216
1217 RegisterCount1 = (UINT16) (AcpiGbl_FADT->Gpe1BlkLen / 2);
1218
1219 /* Check for GPE0/GPE1 overlap (if both banks exist) */
1220
1221 if ((RegisterCount0) &&
1222 (GpeNumberMax >= AcpiGbl_FADT->Gpe1Base))
1223 {
1224 ACPI_REPORT_ERROR ((
1225 "GPE0 block (GPE 0 to %d) overlaps the GPE1 block (GPE %d to %d) - Ignoring GPE1\n",
1226 GpeNumberMax, AcpiGbl_FADT->Gpe1Base,
1227 AcpiGbl_FADT->Gpe1Base +
1228 ((RegisterCount1 * ACPI_GPE_REGISTER_WIDTH) - 1)));
1229
1230 /* Ignore GPE1 block by setting the register count to zero */
1231
1232 RegisterCount1 = 0;
1233 }
1234 else
1235 {
1236 /* Install GPE Block 1 */
1237
1238 Status = AcpiEvCreateGpeBlock (AcpiGbl_FadtGpeDevice, &AcpiGbl_FADT->XGpe1Blk,
1239 RegisterCount1, AcpiGbl_FADT->Gpe1Base,
1240 AcpiGbl_FADT->SciInt, &AcpiGbl_GpeFadtBlocks[1]);
1241
1242 if (ACPI_FAILURE (Status))
1243 {
1244 ACPI_REPORT_ERROR ((
1245 "Could not create GPE Block 1, %s\n",
1246 AcpiFormatException (Status)));
1247 }
1248
1249 /*
1250 * GPE0 and GPE1 do not have to be contiguous in the GPE number
1251 * space. However, GPE0 always starts at GPE number zero.
1252 */
1253 GpeNumberMax = AcpiGbl_FADT->Gpe1Base +
1254 ((RegisterCount1 * ACPI_GPE_REGISTER_WIDTH) - 1);
1255 }
1256 }
1257
1258 /* Exit if there are no GPE registers */
1259
1260 if ((RegisterCount0 + RegisterCount1) == 0)
1261 {
1262 /* GPEs are not required by ACPI, this is OK */
1263
1264 ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
1265 "There are no GPE blocks defined in the FADT\n"));
1266 Status = AE_OK;
1267 goto Cleanup;
1268 }
1269
1270 /* Check for Max GPE number out-of-range */
1271
1272 if (GpeNumberMax > ACPI_GPE_MAX)
1273 {
1274 ACPI_REPORT_ERROR (("Maximum GPE number from FADT is too large: 0x%X\n",
1275 GpeNumberMax));
1276 Status = AE_BAD_VALUE;
1277 goto Cleanup;
1278 }
1279
1280Cleanup:
1281 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
1282 return_ACPI_STATUS (AE_OK);
1283}
1284
1285
| 1107 (UINT32) (GpeBlock->BlockBaseNumber +
1108 ((GpeBlock->RegisterCount * ACPI_GPE_REGISTER_WIDTH) -1)),
1109 GpeDevice->Name.Ascii,
1110 GpeBlock->RegisterCount,
1111 ACPI_FORMAT_UINT64 (ACPI_GET_ADDRESS (GpeBlock->BlockAddress.Address)),
1112 InterruptLevel));
1113
1114
1115 /* Enable all valid GPEs found above */
1116
1117 Status = AcpiHwEnableRuntimeGpeBlock (NULL, GpeBlock);
1118
1119 ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
1120 "Found %u Wake, Enabled %u Runtime GPEs in this block\n",
1121 WakeGpeCount, GpeEnabledCount));
1122
1123 /* Return the new block */
1124
1125 if (ReturnGpeBlock)
1126 {
1127 (*ReturnGpeBlock) = GpeBlock;
1128 }
1129
1130 return_ACPI_STATUS (AE_OK);
1131}
1132
1133
1134/*******************************************************************************
1135 *
1136 * FUNCTION: AcpiEvGpeInitialize
1137 *
1138 * PARAMETERS: None
1139 *
1140 * RETURN: Status
1141 *
1142 * DESCRIPTION: Initialize the GPE data structures
1143 *
1144 ******************************************************************************/
1145
1146ACPI_STATUS
1147AcpiEvGpeInitialize (
1148 void)
1149{
1150 UINT32 RegisterCount0 = 0;
1151 UINT32 RegisterCount1 = 0;
1152 UINT32 GpeNumberMax = 0;
1153 ACPI_STATUS Status;
1154
1155
1156 ACPI_FUNCTION_TRACE ("EvGpeInitialize");
1157
1158
1159 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
1160 if (ACPI_FAILURE (Status))
1161 {
1162 return_ACPI_STATUS (Status);
1163 }
1164
1165 /*
1166 * Initialize the GPE Block(s) defined in the FADT
1167 *
1168 * Why the GPE register block lengths are divided by 2: From the ACPI Spec,
1169 * section "General-Purpose Event Registers", we have:
1170 *
1171 * "Each register block contains two registers of equal length
1172 * GPEx_STS and GPEx_EN (where x is 0 or 1). The length of the
1173 * GPE0_STS and GPE0_EN registers is equal to half the GPE0_LEN
1174 * The length of the GPE1_STS and GPE1_EN registers is equal to
1175 * half the GPE1_LEN. If a generic register block is not supported
1176 * then its respective block pointer and block length values in the
1177 * FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need
1178 * to be the same size."
1179 */
1180
1181 /*
1182 * Determine the maximum GPE number for this machine.
1183 *
1184 * Note: both GPE0 and GPE1 are optional, and either can exist without
1185 * the other.
1186 *
1187 * If EITHER the register length OR the block address are zero, then that
1188 * particular block is not supported.
1189 */
1190 if (AcpiGbl_FADT->Gpe0BlkLen &&
1191 ACPI_GET_ADDRESS (AcpiGbl_FADT->XGpe0Blk.Address))
1192 {
1193 /* GPE block 0 exists (has both length and address > 0) */
1194
1195 RegisterCount0 = (UINT16) (AcpiGbl_FADT->Gpe0BlkLen / 2);
1196
1197 GpeNumberMax = (RegisterCount0 * ACPI_GPE_REGISTER_WIDTH) - 1;
1198
1199 /* Install GPE Block 0 */
1200
1201 Status = AcpiEvCreateGpeBlock (AcpiGbl_FadtGpeDevice, &AcpiGbl_FADT->XGpe0Blk,
1202 RegisterCount0, 0, AcpiGbl_FADT->SciInt, &AcpiGbl_GpeFadtBlocks[0]);
1203
1204 if (ACPI_FAILURE (Status))
1205 {
1206 ACPI_REPORT_ERROR ((
1207 "Could not create GPE Block 0, %s\n",
1208 AcpiFormatException (Status)));
1209 }
1210 }
1211
1212 if (AcpiGbl_FADT->Gpe1BlkLen &&
1213 ACPI_GET_ADDRESS (AcpiGbl_FADT->XGpe1Blk.Address))
1214 {
1215 /* GPE block 1 exists (has both length and address > 0) */
1216
1217 RegisterCount1 = (UINT16) (AcpiGbl_FADT->Gpe1BlkLen / 2);
1218
1219 /* Check for GPE0/GPE1 overlap (if both banks exist) */
1220
1221 if ((RegisterCount0) &&
1222 (GpeNumberMax >= AcpiGbl_FADT->Gpe1Base))
1223 {
1224 ACPI_REPORT_ERROR ((
1225 "GPE0 block (GPE 0 to %d) overlaps the GPE1 block (GPE %d to %d) - Ignoring GPE1\n",
1226 GpeNumberMax, AcpiGbl_FADT->Gpe1Base,
1227 AcpiGbl_FADT->Gpe1Base +
1228 ((RegisterCount1 * ACPI_GPE_REGISTER_WIDTH) - 1)));
1229
1230 /* Ignore GPE1 block by setting the register count to zero */
1231
1232 RegisterCount1 = 0;
1233 }
1234 else
1235 {
1236 /* Install GPE Block 1 */
1237
1238 Status = AcpiEvCreateGpeBlock (AcpiGbl_FadtGpeDevice, &AcpiGbl_FADT->XGpe1Blk,
1239 RegisterCount1, AcpiGbl_FADT->Gpe1Base,
1240 AcpiGbl_FADT->SciInt, &AcpiGbl_GpeFadtBlocks[1]);
1241
1242 if (ACPI_FAILURE (Status))
1243 {
1244 ACPI_REPORT_ERROR ((
1245 "Could not create GPE Block 1, %s\n",
1246 AcpiFormatException (Status)));
1247 }
1248
1249 /*
1250 * GPE0 and GPE1 do not have to be contiguous in the GPE number
1251 * space. However, GPE0 always starts at GPE number zero.
1252 */
1253 GpeNumberMax = AcpiGbl_FADT->Gpe1Base +
1254 ((RegisterCount1 * ACPI_GPE_REGISTER_WIDTH) - 1);
1255 }
1256 }
1257
1258 /* Exit if there are no GPE registers */
1259
1260 if ((RegisterCount0 + RegisterCount1) == 0)
1261 {
1262 /* GPEs are not required by ACPI, this is OK */
1263
1264 ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
1265 "There are no GPE blocks defined in the FADT\n"));
1266 Status = AE_OK;
1267 goto Cleanup;
1268 }
1269
1270 /* Check for Max GPE number out-of-range */
1271
1272 if (GpeNumberMax > ACPI_GPE_MAX)
1273 {
1274 ACPI_REPORT_ERROR (("Maximum GPE number from FADT is too large: 0x%X\n",
1275 GpeNumberMax));
1276 Status = AE_BAD_VALUE;
1277 goto Cleanup;
1278 }
1279
1280Cleanup:
1281 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
1282 return_ACPI_STATUS (AE_OK);
1283}
1284
1285
|