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 prton 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
118#define __EVXFEVNT_C__
119
120#include "acpi.h"
121#include "acevents.h"
122#include "acnamesp.h"
123
124#define _COMPONENT ACPI_EVENTS
125 ACPI_MODULE_NAME ("evxfevnt")
126
127
128/*******************************************************************************
129 *
130 * FUNCTION: AcpiEnable
131 *
132 * PARAMETERS: None
133 *
134 * RETURN: Status
135 *
136 * DESCRIPTION: Transfers the system into ACPI mode.
137 *
138 ******************************************************************************/
139
140ACPI_STATUS
141AcpiEnable (void)
142{
143 ACPI_STATUS Status = AE_OK;
144
145
146 ACPI_FUNCTION_TRACE ("AcpiEnable");
147
148
149 /* Make sure we have the FADT*/
150
151 if (!AcpiGbl_FADT)
152 {
153 ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "No FADT information present!\n"));
154 return_ACPI_STATUS (AE_NO_ACPI_TABLES);
155 }
156
157 if (AcpiHwGetMode() == ACPI_SYS_MODE_ACPI)
158 {
159 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in ACPI mode\n"));
160 }
161 else
162 {
163 /* Transition to ACPI mode */
164
165 Status = AcpiHwSetMode (ACPI_SYS_MODE_ACPI);
166 if (ACPI_FAILURE (Status))
167 {
168 ACPI_REPORT_ERROR (("Could not transition to ACPI mode.\n"));
169 return_ACPI_STATUS (Status);
170 }
171
172 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "Transition to ACPI mode successful\n"));
173 }
174
175 return_ACPI_STATUS (Status);
176}
177
178
179/*******************************************************************************
180 *
181 * FUNCTION: AcpiDisable
182 *
183 * PARAMETERS: None
184 *
185 * RETURN: Status
186 *
187 * DESCRIPTION: Transfers the system into LEGACY mode.
188 *
189 ******************************************************************************/
190
191ACPI_STATUS
192AcpiDisable (void)
193{
194 ACPI_STATUS Status = AE_OK;
195
196
197 ACPI_FUNCTION_TRACE ("AcpiDisable");
198
199
200 if (!AcpiGbl_FADT)
201 {
202 ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "No FADT information present!\n"));
203 return_ACPI_STATUS (AE_NO_ACPI_TABLES);
204 }
205
206 if (AcpiHwGetMode() == ACPI_SYS_MODE_LEGACY)
207 {
208 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in legacy (non-ACPI) mode\n"));
209 }
210 else
211 {
212 /* Transition to LEGACY mode */
213
214 Status = AcpiHwSetMode (ACPI_SYS_MODE_LEGACY);
215
216 if (ACPI_FAILURE (Status))
217 {
218 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not exit ACPI mode to legacy mode"));
219 return_ACPI_STATUS (Status);
220 }
221
222 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI mode disabled\n"));
223 }
224
225 return_ACPI_STATUS (Status);
226}
227
228
229/*******************************************************************************
230 *
231 * FUNCTION: AcpiEnableEvent
232 *
233 * PARAMETERS: Event - The fixed eventto be enabled
234 * Flags - Reserved
235 *
236 * RETURN: Status
237 *
238 * DESCRIPTION: Enable an ACPI event (fixed)
239 *
240 ******************************************************************************/
241
242ACPI_STATUS
243AcpiEnableEvent (
244 UINT32 Event,
245 UINT32 Flags)
246{
247 ACPI_STATUS Status = AE_OK;
248 UINT32 Value;
249
250
251 ACPI_FUNCTION_TRACE ("AcpiEnableEvent");
252
253
254 /* Decode the Fixed Event */
255
256 if (Event > ACPI_EVENT_MAX)
257 {
258 return_ACPI_STATUS (AE_BAD_PARAMETER);
259 }
260
261 /*
262 * Enable the requested fixed event (by writing a one to the
263 * enable register bit)
264 */
265 Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
266 1, ACPI_MTX_LOCK);
267 if (ACPI_FAILURE (Status))
268 {
269 return_ACPI_STATUS (Status);
270 }
271
272 /* Make sure that the hardware responded */
273
274 Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
275 &Value, ACPI_MTX_LOCK);
276 if (ACPI_FAILURE (Status))
277 {
278 return_ACPI_STATUS (Status);
279 }
280
281 if (Value != 1)
282 {
283 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
284 "Could not enable %s event\n", AcpiUtGetEventName (Event)));
285 return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
286 }
287
288 return_ACPI_STATUS (Status);
289}
290
291
292/*******************************************************************************
293 *
294 * FUNCTION: AcpiEnableGpe
295 *
296 * PARAMETERS: GpeDevice - Parent GPE Device
297 * GpeNumber - GPE level within the GPE block
298 * Flags - Just enable, or also wake enable?
299 * Called from ISR or not
300 *
301 * RETURN: Status
302 *
303 * DESCRIPTION: Enable an ACPI event (general purpose)
304 *
305 ******************************************************************************/
306
307ACPI_STATUS
308AcpiEnableGpe (
309 ACPI_HANDLE GpeDevice,
310 UINT32 GpeNumber,
311 UINT32 Flags)
312{
313 ACPI_STATUS Status = AE_OK;
314 ACPI_GPE_EVENT_INFO *GpeEventInfo;
315
316
317 ACPI_FUNCTION_TRACE ("AcpiEnableGpe");
318
319
320 /* Use semaphore lock if not executing at interrupt level */
321
322 if (Flags & ACPI_NOT_ISR)
323 {
324 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
325 if (ACPI_FAILURE (Status))
326 {
327 return_ACPI_STATUS (Status);
328 }
329 }
330
331 /* Ensure that we have a valid GPE number */
332
333 GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
334 if (!GpeEventInfo)
335 {
336 Status = AE_BAD_PARAMETER;
337 goto UnlockAndExit;
338 }
339
340 /* Enable the requested GPE number */
341
342 Status = AcpiHwEnableGpe (GpeEventInfo);
343 if (ACPI_FAILURE (Status))
344 {
345 goto UnlockAndExit;
346 }
347
348 if (Flags & ACPI_EVENT_WAKE_ENABLE)
349 {
350 AcpiHwEnableGpeForWakeup (GpeEventInfo);
351 }
352
353UnlockAndExit:
354 if (Flags & ACPI_NOT_ISR)
355 {
356 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
357 }
358 return_ACPI_STATUS (Status);
359}
360
361
362/*******************************************************************************
363 *
364 * FUNCTION: AcpiDisableEvent
365 *
366 * PARAMETERS: Event - The fixed eventto be enabled
367 * Flags - Reserved
368 *
369 * RETURN: Status
370 *
371 * DESCRIPTION: Disable an ACPI event (fixed)
372 *
373 ******************************************************************************/
374
375ACPI_STATUS
376AcpiDisableEvent (
377 UINT32 Event,
378 UINT32 Flags)
379{
380 ACPI_STATUS Status = AE_OK;
381 UINT32 Value;
382
383
384 ACPI_FUNCTION_TRACE ("AcpiDisableEvent");
385
386
387 /* Decode the Fixed Event */
388
389 if (Event > ACPI_EVENT_MAX)
390 {
391 return_ACPI_STATUS (AE_BAD_PARAMETER);
392 }
393
394 /*
395 * Disable the requested fixed event (by writing a zero to the
396 * enable register bit)
397 */
398 Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
399 0, ACPI_MTX_LOCK);
400 if (ACPI_FAILURE (Status))
401 {
402 return_ACPI_STATUS (Status);
403 }
404
405 Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
406 &Value, ACPI_MTX_LOCK);
407 if (ACPI_FAILURE (Status))
408 {
409 return_ACPI_STATUS (Status);
410 }
411
412 if (Value != 0)
413 {
414 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
415 "Could not disable %s events\n", AcpiUtGetEventName (Event)));
416 return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
417 }
418
419 return_ACPI_STATUS (Status);
420}
421
422
423/*******************************************************************************
424 *
425 * FUNCTION: AcpiDisableGpe
426 *
427 * PARAMETERS: GpeDevice - Parent GPE Device
428 * GpeNumber - GPE level within the GPE block
429 * Flags - Just enable, or also wake enable?
430 * Called from ISR or not
431 *
432 * RETURN: Status
433 *
434 * DESCRIPTION: Disable an ACPI event (general purpose)
435 *
436 ******************************************************************************/
437
438ACPI_STATUS
439AcpiDisableGpe (
440 ACPI_HANDLE GpeDevice,
441 UINT32 GpeNumber,
442 UINT32 Flags)
443{
444 ACPI_STATUS Status = AE_OK;
445 ACPI_GPE_EVENT_INFO *GpeEventInfo;
446
447
448 ACPI_FUNCTION_TRACE ("AcpiDisableGpe");
449
450
451 /* Use semaphore lock if not executing at interrupt level */
452
453 if (Flags & ACPI_NOT_ISR)
454 {
455 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
456 if (ACPI_FAILURE (Status))
457 {
458 return_ACPI_STATUS (Status);
459 }
460 }
461
462 /* Ensure that we have a valid GPE number */
463
464 GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
465 if (!GpeEventInfo)
466 {
467 Status = AE_BAD_PARAMETER;
468 goto UnlockAndExit;
469 }
470
471 /*
472 * Only disable the requested GPE number for wake if specified.
473 * Otherwise, turn it totally off
474 */
475 if (Flags & ACPI_EVENT_WAKE_DISABLE)
476 {
477 AcpiHwDisableGpeForWakeup (GpeEventInfo);
478 }
479 else
480 {
481 Status = AcpiHwDisableGpe (GpeEventInfo);
482 }
483
484UnlockAndExit:
485 if (Flags & ACPI_NOT_ISR)
486 {
487 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
488 }
489 return_ACPI_STATUS (Status);
490}
491
492
493/*******************************************************************************
494 *
495 * FUNCTION: AcpiClearEvent
496 *
497 * PARAMETERS: Event - The fixed event to be cleared
498 *
499 * RETURN: Status
500 *
501 * DESCRIPTION: Clear an ACPI event (fixed)
502 *
503 ******************************************************************************/
504
505ACPI_STATUS
506AcpiClearEvent (
507 UINT32 Event)
508{
509 ACPI_STATUS Status = AE_OK;
510
511
512 ACPI_FUNCTION_TRACE ("AcpiClearEvent");
513
514
515 /* Decode the Fixed Event */
516
517 if (Event > ACPI_EVENT_MAX)
518 {
519 return_ACPI_STATUS (AE_BAD_PARAMETER);
520 }
521
522 /*
523 * Clear the requested fixed event (By writing a one to the
524 * status register bit)
525 */
526 Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].StatusRegisterId,
527 1, ACPI_MTX_LOCK);
528
529 return_ACPI_STATUS (Status);
530}
531
532
533/*******************************************************************************
534 *
535 * FUNCTION: AcpiClearGpe
536 *
537 * PARAMETERS: GpeDevice - Parent GPE Device
538 * GpeNumber - GPE level within the GPE block
539 * Flags - Called from an ISR or not
540 *
541 * RETURN: Status
542 *
543 * DESCRIPTION: Clear an ACPI event (general purpose)
544 *
545 ******************************************************************************/
546
547ACPI_STATUS
548AcpiClearGpe (
549 ACPI_HANDLE GpeDevice,
550 UINT32 GpeNumber,
551 UINT32 Flags)
552{
553 ACPI_STATUS Status = AE_OK;
554 ACPI_GPE_EVENT_INFO *GpeEventInfo;
555
556
557 ACPI_FUNCTION_TRACE ("AcpiClearGpe");
558
559
560 /* Use semaphore lock if not executing at interrupt level */
561
562 if (Flags & ACPI_NOT_ISR)
563 {
564 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
565 if (ACPI_FAILURE (Status))
566 {
567 return_ACPI_STATUS (Status);
568 }
569 }
570
571 /* Ensure that we have a valid GPE number */
572
573 GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
574 if (!GpeEventInfo)
575 {
576 Status = AE_BAD_PARAMETER;
577 goto UnlockAndExit;
578 }
579
580 Status = AcpiHwClearGpe (GpeEventInfo);
581
582UnlockAndExit:
583 if (Flags & ACPI_NOT_ISR)
584 {
585 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
586 }
587 return_ACPI_STATUS (Status);
588}
589
590
591/*******************************************************************************
592 *
593 * FUNCTION: AcpiGetEventStatus
594 *
595 * PARAMETERS: Event - The fixed event
596 * Event Status - Where the current status of the event will
597 * be returned
598 *
599 * RETURN: Status
600 *
601 * DESCRIPTION: Obtains and returns the current status of the event
602 *
603 ******************************************************************************/
604
605ACPI_STATUS
606AcpiGetEventStatus (
607 UINT32 Event,
608 ACPI_EVENT_STATUS *EventStatus)
609{
610 ACPI_STATUS Status = AE_OK;
611
612
613 ACPI_FUNCTION_TRACE ("AcpiGetEventStatus");
614
615
616 if (!EventStatus)
617 {
618 return_ACPI_STATUS (AE_BAD_PARAMETER);
619 }
620
621 /* Decode the Fixed Event */
622
623 if (Event > ACPI_EVENT_MAX)
624 {
625 return_ACPI_STATUS (AE_BAD_PARAMETER);
626 }
627
628 /* Get the status of the requested fixed event */
629
630 Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].StatusRegisterId,
631 EventStatus, ACPI_MTX_LOCK);
632
633 return_ACPI_STATUS (Status);
634}
635
636
637/*******************************************************************************
638 *
639 * FUNCTION: AcpiGetGpeStatus
640 *
641 * PARAMETERS: GpeDevice - Parent GPE Device
642 * GpeNumber - GPE level within the GPE block
643 * Flags - Called from an ISR or not
644 * Event Status - Where the current status of the event will
645 * be returned
646 *
647 * RETURN: Status
648 *
649 * DESCRIPTION: Get status of an event (general purpose)
650 *
651 ******************************************************************************/
652
653ACPI_STATUS
654AcpiGetGpeStatus (
655 ACPI_HANDLE GpeDevice,
656 UINT32 GpeNumber,
657 UINT32 Flags,
658 ACPI_EVENT_STATUS *EventStatus)
659{
660 ACPI_STATUS Status = AE_OK;
661 ACPI_GPE_EVENT_INFO *GpeEventInfo;
662
663
664 ACPI_FUNCTION_TRACE ("AcpiGetGpeStatus");
665
666
667 /* Use semaphore lock if not executing at interrupt level */
668
669 if (Flags & ACPI_NOT_ISR)
670 {
671 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
672 if (ACPI_FAILURE (Status))
673 {
674 return_ACPI_STATUS (Status);
675 }
676 }
677
678 /* Ensure that we have a valid GPE number */
679
680 GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
681 if (!GpeEventInfo)
682 {
683 Status = AE_BAD_PARAMETER;
684 goto UnlockAndExit;
685 }
686
687 /* Obtain status on the requested GPE number */
688
689 Status = AcpiHwGetGpeStatus (GpeEventInfo, EventStatus);
690
691UnlockAndExit:
692 if (Flags & ACPI_NOT_ISR)
693 {
694 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
695 }
696 return_ACPI_STATUS (Status);
697}
698
699
700/*******************************************************************************
701 *
702 * FUNCTION: AcpiInstallGpeBlock
703 *
704 * PARAMETERS: GpeDevice - Handle to the parent GPE Block Device
705 * GpeBlockAddress - Address and SpaceID
706 * RegisterCount - Number of GPE register pairs in the block
707 * InterruptLevel - H/W interrupt for the block
708 *
709 * RETURN: Status
710 *
711 * DESCRIPTION: Create and Install a block of GPE registers
712 *
713 ******************************************************************************/
714
715ACPI_STATUS
716AcpiInstallGpeBlock (
717 ACPI_HANDLE GpeDevice,
718 ACPI_GENERIC_ADDRESS *GpeBlockAddress,
719 UINT32 RegisterCount,
720 UINT32 InterruptLevel)
721{
722 ACPI_STATUS Status;
723 ACPI_OPERAND_OBJECT *ObjDesc;
724 ACPI_NAMESPACE_NODE *Node;
725 ACPI_GPE_BLOCK_INFO *GpeBlock;
726
727
728 ACPI_FUNCTION_TRACE ("AcpiInstallGpeBlock");
729
730
731 if ((!GpeDevice) ||
732 (!GpeBlockAddress) ||
733 (!RegisterCount))
734 {
735 return_ACPI_STATUS (AE_BAD_PARAMETER);
736 }
737
738 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
739 if (ACPI_FAILURE (Status))
740 {
741 return (Status);
742 }
743
744 Node = AcpiNsMapHandleToNode (GpeDevice);
745 if (!Node)
746 {
747 Status = AE_BAD_PARAMETER;
748 goto UnlockAndExit;
749 }
750
751 /*
752 * For user-installed GPE Block Devices, the GpeBlockBaseNumber
753 * is always zero
754 */
755 Status = AcpiEvCreateGpeBlock (Node, GpeBlockAddress, RegisterCount,
756 0, InterruptLevel, &GpeBlock);
757 if (ACPI_FAILURE (Status))
758 {
759 goto UnlockAndExit;
760 }
761
762 /* Get the DeviceObject attached to the node */
763
764 ObjDesc = AcpiNsGetAttachedObject (Node);
765 if (!ObjDesc)
766 {
767 /* No object, create a new one */
768
769 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_DEVICE);
770 if (!ObjDesc)
771 {
772 Status = AE_NO_MEMORY;
773 goto UnlockAndExit;
774 }
775
776 Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_DEVICE);
777
778 /* Remove local reference to the object */
779
780 AcpiUtRemoveReference (ObjDesc);
781
782 if (ACPI_FAILURE (Status))
783 {
784 goto UnlockAndExit;
785 }
786 }
787
788 /* Install the GPE block in the DeviceObject */
789
790 ObjDesc->Device.GpeBlock = GpeBlock;
791
792
793UnlockAndExit:
794 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
795 return_ACPI_STATUS (Status);
796}
797
798
799/*******************************************************************************
800 *
801 * FUNCTION: AcpiRemoveGpeBlock
802 *
803 * PARAMETERS: GpeDevice - Handle to the parent GPE Block Device
804 *
805 * RETURN: Status
806 *
807 * DESCRIPTION: Remove a previously installed block of GPE registers
808 *
809 ******************************************************************************/
810
811ACPI_STATUS
812AcpiRemoveGpeBlock (
813 ACPI_HANDLE GpeDevice)
814{
815 ACPI_OPERAND_OBJECT *ObjDesc;
816 ACPI_STATUS Status;
817 ACPI_NAMESPACE_NODE *Node;
818
819
820 ACPI_FUNCTION_TRACE ("AcpiRemoveGpeBlock");
821
822
823 if (!GpeDevice)
824 {
825 return_ACPI_STATUS (AE_BAD_PARAMETER);
826 }
827
828 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
829 if (ACPI_FAILURE (Status))
830 {
831 return (Status);
832 }
833
834 Node = AcpiNsMapHandleToNode (GpeDevice);
835 if (!Node)
836 {
837 Status = AE_BAD_PARAMETER;
838 goto UnlockAndExit;
839 }
840
841 /* Get the DeviceObject attached to the node */
842
843 ObjDesc = AcpiNsGetAttachedObject (Node);
844 if (!ObjDesc ||
845 !ObjDesc->Device.GpeBlock)
846 {
847 return_ACPI_STATUS (AE_NULL_OBJECT);
848 }
849
850 /* Delete the GPE block (but not the DeviceObject) */
851
852 Status = AcpiEvDeleteGpeBlock (ObjDesc->Device.GpeBlock);
853 if (ACPI_SUCCESS (Status))
854 {
855 ObjDesc->Device.GpeBlock = NULL;
856 }
857
858UnlockAndExit:
859 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
860 return_ACPI_STATUS (Status);
861}
862
| 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 prton 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
118#define __EVXFEVNT_C__
119
120#include "acpi.h"
121#include "acevents.h"
122#include "acnamesp.h"
123
124#define _COMPONENT ACPI_EVENTS
125 ACPI_MODULE_NAME ("evxfevnt")
126
127
128/*******************************************************************************
129 *
130 * FUNCTION: AcpiEnable
131 *
132 * PARAMETERS: None
133 *
134 * RETURN: Status
135 *
136 * DESCRIPTION: Transfers the system into ACPI mode.
137 *
138 ******************************************************************************/
139
140ACPI_STATUS
141AcpiEnable (void)
142{
143 ACPI_STATUS Status = AE_OK;
144
145
146 ACPI_FUNCTION_TRACE ("AcpiEnable");
147
148
149 /* Make sure we have the FADT*/
150
151 if (!AcpiGbl_FADT)
152 {
153 ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "No FADT information present!\n"));
154 return_ACPI_STATUS (AE_NO_ACPI_TABLES);
155 }
156
157 if (AcpiHwGetMode() == ACPI_SYS_MODE_ACPI)
158 {
159 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in ACPI mode\n"));
160 }
161 else
162 {
163 /* Transition to ACPI mode */
164
165 Status = AcpiHwSetMode (ACPI_SYS_MODE_ACPI);
166 if (ACPI_FAILURE (Status))
167 {
168 ACPI_REPORT_ERROR (("Could not transition to ACPI mode.\n"));
169 return_ACPI_STATUS (Status);
170 }
171
172 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "Transition to ACPI mode successful\n"));
173 }
174
175 return_ACPI_STATUS (Status);
176}
177
178
179/*******************************************************************************
180 *
181 * FUNCTION: AcpiDisable
182 *
183 * PARAMETERS: None
184 *
185 * RETURN: Status
186 *
187 * DESCRIPTION: Transfers the system into LEGACY mode.
188 *
189 ******************************************************************************/
190
191ACPI_STATUS
192AcpiDisable (void)
193{
194 ACPI_STATUS Status = AE_OK;
195
196
197 ACPI_FUNCTION_TRACE ("AcpiDisable");
198
199
200 if (!AcpiGbl_FADT)
201 {
202 ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "No FADT information present!\n"));
203 return_ACPI_STATUS (AE_NO_ACPI_TABLES);
204 }
205
206 if (AcpiHwGetMode() == ACPI_SYS_MODE_LEGACY)
207 {
208 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in legacy (non-ACPI) mode\n"));
209 }
210 else
211 {
212 /* Transition to LEGACY mode */
213
214 Status = AcpiHwSetMode (ACPI_SYS_MODE_LEGACY);
215
216 if (ACPI_FAILURE (Status))
217 {
218 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not exit ACPI mode to legacy mode"));
219 return_ACPI_STATUS (Status);
220 }
221
222 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI mode disabled\n"));
223 }
224
225 return_ACPI_STATUS (Status);
226}
227
228
229/*******************************************************************************
230 *
231 * FUNCTION: AcpiEnableEvent
232 *
233 * PARAMETERS: Event - The fixed eventto be enabled
234 * Flags - Reserved
235 *
236 * RETURN: Status
237 *
238 * DESCRIPTION: Enable an ACPI event (fixed)
239 *
240 ******************************************************************************/
241
242ACPI_STATUS
243AcpiEnableEvent (
244 UINT32 Event,
245 UINT32 Flags)
246{
247 ACPI_STATUS Status = AE_OK;
248 UINT32 Value;
249
250
251 ACPI_FUNCTION_TRACE ("AcpiEnableEvent");
252
253
254 /* Decode the Fixed Event */
255
256 if (Event > ACPI_EVENT_MAX)
257 {
258 return_ACPI_STATUS (AE_BAD_PARAMETER);
259 }
260
261 /*
262 * Enable the requested fixed event (by writing a one to the
263 * enable register bit)
264 */
265 Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
266 1, ACPI_MTX_LOCK);
267 if (ACPI_FAILURE (Status))
268 {
269 return_ACPI_STATUS (Status);
270 }
271
272 /* Make sure that the hardware responded */
273
274 Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
275 &Value, ACPI_MTX_LOCK);
276 if (ACPI_FAILURE (Status))
277 {
278 return_ACPI_STATUS (Status);
279 }
280
281 if (Value != 1)
282 {
283 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
284 "Could not enable %s event\n", AcpiUtGetEventName (Event)));
285 return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
286 }
287
288 return_ACPI_STATUS (Status);
289}
290
291
292/*******************************************************************************
293 *
294 * FUNCTION: AcpiEnableGpe
295 *
296 * PARAMETERS: GpeDevice - Parent GPE Device
297 * GpeNumber - GPE level within the GPE block
298 * Flags - Just enable, or also wake enable?
299 * Called from ISR or not
300 *
301 * RETURN: Status
302 *
303 * DESCRIPTION: Enable an ACPI event (general purpose)
304 *
305 ******************************************************************************/
306
307ACPI_STATUS
308AcpiEnableGpe (
309 ACPI_HANDLE GpeDevice,
310 UINT32 GpeNumber,
311 UINT32 Flags)
312{
313 ACPI_STATUS Status = AE_OK;
314 ACPI_GPE_EVENT_INFO *GpeEventInfo;
315
316
317 ACPI_FUNCTION_TRACE ("AcpiEnableGpe");
318
319
320 /* Use semaphore lock if not executing at interrupt level */
321
322 if (Flags & ACPI_NOT_ISR)
323 {
324 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
325 if (ACPI_FAILURE (Status))
326 {
327 return_ACPI_STATUS (Status);
328 }
329 }
330
331 /* Ensure that we have a valid GPE number */
332
333 GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
334 if (!GpeEventInfo)
335 {
336 Status = AE_BAD_PARAMETER;
337 goto UnlockAndExit;
338 }
339
340 /* Enable the requested GPE number */
341
342 Status = AcpiHwEnableGpe (GpeEventInfo);
343 if (ACPI_FAILURE (Status))
344 {
345 goto UnlockAndExit;
346 }
347
348 if (Flags & ACPI_EVENT_WAKE_ENABLE)
349 {
350 AcpiHwEnableGpeForWakeup (GpeEventInfo);
351 }
352
353UnlockAndExit:
354 if (Flags & ACPI_NOT_ISR)
355 {
356 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
357 }
358 return_ACPI_STATUS (Status);
359}
360
361
362/*******************************************************************************
363 *
364 * FUNCTION: AcpiDisableEvent
365 *
366 * PARAMETERS: Event - The fixed eventto be enabled
367 * Flags - Reserved
368 *
369 * RETURN: Status
370 *
371 * DESCRIPTION: Disable an ACPI event (fixed)
372 *
373 ******************************************************************************/
374
375ACPI_STATUS
376AcpiDisableEvent (
377 UINT32 Event,
378 UINT32 Flags)
379{
380 ACPI_STATUS Status = AE_OK;
381 UINT32 Value;
382
383
384 ACPI_FUNCTION_TRACE ("AcpiDisableEvent");
385
386
387 /* Decode the Fixed Event */
388
389 if (Event > ACPI_EVENT_MAX)
390 {
391 return_ACPI_STATUS (AE_BAD_PARAMETER);
392 }
393
394 /*
395 * Disable the requested fixed event (by writing a zero to the
396 * enable register bit)
397 */
398 Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
399 0, ACPI_MTX_LOCK);
400 if (ACPI_FAILURE (Status))
401 {
402 return_ACPI_STATUS (Status);
403 }
404
405 Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
406 &Value, ACPI_MTX_LOCK);
407 if (ACPI_FAILURE (Status))
408 {
409 return_ACPI_STATUS (Status);
410 }
411
412 if (Value != 0)
413 {
414 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
415 "Could not disable %s events\n", AcpiUtGetEventName (Event)));
416 return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
417 }
418
419 return_ACPI_STATUS (Status);
420}
421
422
423/*******************************************************************************
424 *
425 * FUNCTION: AcpiDisableGpe
426 *
427 * PARAMETERS: GpeDevice - Parent GPE Device
428 * GpeNumber - GPE level within the GPE block
429 * Flags - Just enable, or also wake enable?
430 * Called from ISR or not
431 *
432 * RETURN: Status
433 *
434 * DESCRIPTION: Disable an ACPI event (general purpose)
435 *
436 ******************************************************************************/
437
438ACPI_STATUS
439AcpiDisableGpe (
440 ACPI_HANDLE GpeDevice,
441 UINT32 GpeNumber,
442 UINT32 Flags)
443{
444 ACPI_STATUS Status = AE_OK;
445 ACPI_GPE_EVENT_INFO *GpeEventInfo;
446
447
448 ACPI_FUNCTION_TRACE ("AcpiDisableGpe");
449
450
451 /* Use semaphore lock if not executing at interrupt level */
452
453 if (Flags & ACPI_NOT_ISR)
454 {
455 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
456 if (ACPI_FAILURE (Status))
457 {
458 return_ACPI_STATUS (Status);
459 }
460 }
461
462 /* Ensure that we have a valid GPE number */
463
464 GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
465 if (!GpeEventInfo)
466 {
467 Status = AE_BAD_PARAMETER;
468 goto UnlockAndExit;
469 }
470
471 /*
472 * Only disable the requested GPE number for wake if specified.
473 * Otherwise, turn it totally off
474 */
475 if (Flags & ACPI_EVENT_WAKE_DISABLE)
476 {
477 AcpiHwDisableGpeForWakeup (GpeEventInfo);
478 }
479 else
480 {
481 Status = AcpiHwDisableGpe (GpeEventInfo);
482 }
483
484UnlockAndExit:
485 if (Flags & ACPI_NOT_ISR)
486 {
487 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
488 }
489 return_ACPI_STATUS (Status);
490}
491
492
493/*******************************************************************************
494 *
495 * FUNCTION: AcpiClearEvent
496 *
497 * PARAMETERS: Event - The fixed event to be cleared
498 *
499 * RETURN: Status
500 *
501 * DESCRIPTION: Clear an ACPI event (fixed)
502 *
503 ******************************************************************************/
504
505ACPI_STATUS
506AcpiClearEvent (
507 UINT32 Event)
508{
509 ACPI_STATUS Status = AE_OK;
510
511
512 ACPI_FUNCTION_TRACE ("AcpiClearEvent");
513
514
515 /* Decode the Fixed Event */
516
517 if (Event > ACPI_EVENT_MAX)
518 {
519 return_ACPI_STATUS (AE_BAD_PARAMETER);
520 }
521
522 /*
523 * Clear the requested fixed event (By writing a one to the
524 * status register bit)
525 */
526 Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].StatusRegisterId,
527 1, ACPI_MTX_LOCK);
528
529 return_ACPI_STATUS (Status);
530}
531
532
533/*******************************************************************************
534 *
535 * FUNCTION: AcpiClearGpe
536 *
537 * PARAMETERS: GpeDevice - Parent GPE Device
538 * GpeNumber - GPE level within the GPE block
539 * Flags - Called from an ISR or not
540 *
541 * RETURN: Status
542 *
543 * DESCRIPTION: Clear an ACPI event (general purpose)
544 *
545 ******************************************************************************/
546
547ACPI_STATUS
548AcpiClearGpe (
549 ACPI_HANDLE GpeDevice,
550 UINT32 GpeNumber,
551 UINT32 Flags)
552{
553 ACPI_STATUS Status = AE_OK;
554 ACPI_GPE_EVENT_INFO *GpeEventInfo;
555
556
557 ACPI_FUNCTION_TRACE ("AcpiClearGpe");
558
559
560 /* Use semaphore lock if not executing at interrupt level */
561
562 if (Flags & ACPI_NOT_ISR)
563 {
564 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
565 if (ACPI_FAILURE (Status))
566 {
567 return_ACPI_STATUS (Status);
568 }
569 }
570
571 /* Ensure that we have a valid GPE number */
572
573 GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
574 if (!GpeEventInfo)
575 {
576 Status = AE_BAD_PARAMETER;
577 goto UnlockAndExit;
578 }
579
580 Status = AcpiHwClearGpe (GpeEventInfo);
581
582UnlockAndExit:
583 if (Flags & ACPI_NOT_ISR)
584 {
585 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
586 }
587 return_ACPI_STATUS (Status);
588}
589
590
591/*******************************************************************************
592 *
593 * FUNCTION: AcpiGetEventStatus
594 *
595 * PARAMETERS: Event - The fixed event
596 * Event Status - Where the current status of the event will
597 * be returned
598 *
599 * RETURN: Status
600 *
601 * DESCRIPTION: Obtains and returns the current status of the event
602 *
603 ******************************************************************************/
604
605ACPI_STATUS
606AcpiGetEventStatus (
607 UINT32 Event,
608 ACPI_EVENT_STATUS *EventStatus)
609{
610 ACPI_STATUS Status = AE_OK;
611
612
613 ACPI_FUNCTION_TRACE ("AcpiGetEventStatus");
614
615
616 if (!EventStatus)
617 {
618 return_ACPI_STATUS (AE_BAD_PARAMETER);
619 }
620
621 /* Decode the Fixed Event */
622
623 if (Event > ACPI_EVENT_MAX)
624 {
625 return_ACPI_STATUS (AE_BAD_PARAMETER);
626 }
627
628 /* Get the status of the requested fixed event */
629
630 Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].StatusRegisterId,
631 EventStatus, ACPI_MTX_LOCK);
632
633 return_ACPI_STATUS (Status);
634}
635
636
637/*******************************************************************************
638 *
639 * FUNCTION: AcpiGetGpeStatus
640 *
641 * PARAMETERS: GpeDevice - Parent GPE Device
642 * GpeNumber - GPE level within the GPE block
643 * Flags - Called from an ISR or not
644 * Event Status - Where the current status of the event will
645 * be returned
646 *
647 * RETURN: Status
648 *
649 * DESCRIPTION: Get status of an event (general purpose)
650 *
651 ******************************************************************************/
652
653ACPI_STATUS
654AcpiGetGpeStatus (
655 ACPI_HANDLE GpeDevice,
656 UINT32 GpeNumber,
657 UINT32 Flags,
658 ACPI_EVENT_STATUS *EventStatus)
659{
660 ACPI_STATUS Status = AE_OK;
661 ACPI_GPE_EVENT_INFO *GpeEventInfo;
662
663
664 ACPI_FUNCTION_TRACE ("AcpiGetGpeStatus");
665
666
667 /* Use semaphore lock if not executing at interrupt level */
668
669 if (Flags & ACPI_NOT_ISR)
670 {
671 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
672 if (ACPI_FAILURE (Status))
673 {
674 return_ACPI_STATUS (Status);
675 }
676 }
677
678 /* Ensure that we have a valid GPE number */
679
680 GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
681 if (!GpeEventInfo)
682 {
683 Status = AE_BAD_PARAMETER;
684 goto UnlockAndExit;
685 }
686
687 /* Obtain status on the requested GPE number */
688
689 Status = AcpiHwGetGpeStatus (GpeEventInfo, EventStatus);
690
691UnlockAndExit:
692 if (Flags & ACPI_NOT_ISR)
693 {
694 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
695 }
696 return_ACPI_STATUS (Status);
697}
698
699
700/*******************************************************************************
701 *
702 * FUNCTION: AcpiInstallGpeBlock
703 *
704 * PARAMETERS: GpeDevice - Handle to the parent GPE Block Device
705 * GpeBlockAddress - Address and SpaceID
706 * RegisterCount - Number of GPE register pairs in the block
707 * InterruptLevel - H/W interrupt for the block
708 *
709 * RETURN: Status
710 *
711 * DESCRIPTION: Create and Install a block of GPE registers
712 *
713 ******************************************************************************/
714
715ACPI_STATUS
716AcpiInstallGpeBlock (
717 ACPI_HANDLE GpeDevice,
718 ACPI_GENERIC_ADDRESS *GpeBlockAddress,
719 UINT32 RegisterCount,
720 UINT32 InterruptLevel)
721{
722 ACPI_STATUS Status;
723 ACPI_OPERAND_OBJECT *ObjDesc;
724 ACPI_NAMESPACE_NODE *Node;
725 ACPI_GPE_BLOCK_INFO *GpeBlock;
726
727
728 ACPI_FUNCTION_TRACE ("AcpiInstallGpeBlock");
729
730
731 if ((!GpeDevice) ||
732 (!GpeBlockAddress) ||
733 (!RegisterCount))
734 {
735 return_ACPI_STATUS (AE_BAD_PARAMETER);
736 }
737
738 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
739 if (ACPI_FAILURE (Status))
740 {
741 return (Status);
742 }
743
744 Node = AcpiNsMapHandleToNode (GpeDevice);
745 if (!Node)
746 {
747 Status = AE_BAD_PARAMETER;
748 goto UnlockAndExit;
749 }
750
751 /*
752 * For user-installed GPE Block Devices, the GpeBlockBaseNumber
753 * is always zero
754 */
755 Status = AcpiEvCreateGpeBlock (Node, GpeBlockAddress, RegisterCount,
756 0, InterruptLevel, &GpeBlock);
757 if (ACPI_FAILURE (Status))
758 {
759 goto UnlockAndExit;
760 }
761
762 /* Get the DeviceObject attached to the node */
763
764 ObjDesc = AcpiNsGetAttachedObject (Node);
765 if (!ObjDesc)
766 {
767 /* No object, create a new one */
768
769 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_DEVICE);
770 if (!ObjDesc)
771 {
772 Status = AE_NO_MEMORY;
773 goto UnlockAndExit;
774 }
775
776 Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_DEVICE);
777
778 /* Remove local reference to the object */
779
780 AcpiUtRemoveReference (ObjDesc);
781
782 if (ACPI_FAILURE (Status))
783 {
784 goto UnlockAndExit;
785 }
786 }
787
788 /* Install the GPE block in the DeviceObject */
789
790 ObjDesc->Device.GpeBlock = GpeBlock;
791
792
793UnlockAndExit:
794 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
795 return_ACPI_STATUS (Status);
796}
797
798
799/*******************************************************************************
800 *
801 * FUNCTION: AcpiRemoveGpeBlock
802 *
803 * PARAMETERS: GpeDevice - Handle to the parent GPE Block Device
804 *
805 * RETURN: Status
806 *
807 * DESCRIPTION: Remove a previously installed block of GPE registers
808 *
809 ******************************************************************************/
810
811ACPI_STATUS
812AcpiRemoveGpeBlock (
813 ACPI_HANDLE GpeDevice)
814{
815 ACPI_OPERAND_OBJECT *ObjDesc;
816 ACPI_STATUS Status;
817 ACPI_NAMESPACE_NODE *Node;
818
819
820 ACPI_FUNCTION_TRACE ("AcpiRemoveGpeBlock");
821
822
823 if (!GpeDevice)
824 {
825 return_ACPI_STATUS (AE_BAD_PARAMETER);
826 }
827
828 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
829 if (ACPI_FAILURE (Status))
830 {
831 return (Status);
832 }
833
834 Node = AcpiNsMapHandleToNode (GpeDevice);
835 if (!Node)
836 {
837 Status = AE_BAD_PARAMETER;
838 goto UnlockAndExit;
839 }
840
841 /* Get the DeviceObject attached to the node */
842
843 ObjDesc = AcpiNsGetAttachedObject (Node);
844 if (!ObjDesc ||
845 !ObjDesc->Device.GpeBlock)
846 {
847 return_ACPI_STATUS (AE_NULL_OBJECT);
848 }
849
850 /* Delete the GPE block (but not the DeviceObject) */
851
852 Status = AcpiEvDeleteGpeBlock (ObjDesc->Device.GpeBlock);
853 if (ACPI_SUCCESS (Status))
854 {
855 ObjDesc->Device.GpeBlock = NULL;
856 }
857
858UnlockAndExit:
859 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
860 return_ACPI_STATUS (Status);
861}
862
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