1/******************************************************************************
2 *
3 * Module Name: hwgpe - Low level GPE enable/disable/clear functions
4 *
5 *****************************************************************************/
6
7/******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2023, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************
115 *
116 * Alternatively, you may choose to be licensed under the terms of the
117 * following license:
118 *
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
121 * are met:
122 * 1. Redistributions of source code must retain the above copyright
123 *    notice, this list of conditions, and the following disclaimer,
124 *    without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 *    substantially similar to the "NO WARRANTY" disclaimer below
127 *    ("Disclaimer") and any redistribution must be conditioned upon
128 *    including a substantially similar Disclaimer requirement for further
129 *    binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 *    of any contributors may be used to endorse or promote products derived
132 *    from this software without specific prior written permission.
133 *
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145 *
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
149 *
150 *****************************************************************************/
151
152#include "acpi.h"
153#include "accommon.h"
154#include "acevents.h"
155
156#define _COMPONENT          ACPI_HARDWARE
157        ACPI_MODULE_NAME    ("hwgpe")
158
159#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
160
161/* Local prototypes */
162
163static ACPI_STATUS
164AcpiHwEnableWakeupGpeBlock (
165    ACPI_GPE_XRUPT_INFO     *GpeXruptInfo,
166    ACPI_GPE_BLOCK_INFO     *GpeBlock,
167    void                    *Context);
168
169static ACPI_STATUS
170AcpiHwGpeEnableWrite (
171    UINT8                   EnableMask,
172    ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo);
173
174
175/******************************************************************************
176 *
177 * FUNCTION:    AcpiHwGetGpeRegisterBit
178 *
179 * PARAMETERS:  GpeEventInfo        - Info block for the GPE
180 *
181 * RETURN:      Register mask with a one in the GPE bit position
182 *
183 * DESCRIPTION: Compute the register mask for this GPE. One bit is set in the
184 *              correct position for the input GPE.
185 *
186 ******************************************************************************/
187
188UINT32
189AcpiHwGetGpeRegisterBit (
190    ACPI_GPE_EVENT_INFO     *GpeEventInfo)
191{
192
193    return ((UINT32) 1 <<
194        (GpeEventInfo->GpeNumber - GpeEventInfo->RegisterInfo->BaseGpeNumber));
195}
196
197
198/******************************************************************************
199 *
200 * FUNCTION:    AcpiHwLowSetGpe
201 *
202 * PARAMETERS:  GpeEventInfo        - Info block for the GPE to be disabled
203 *              Action              - Enable or disable
204 *
205 * RETURN:      Status
206 *
207 * DESCRIPTION: Enable or disable a single GPE in the parent enable register.
208 *              The EnableMask field of the involved GPE register must be
209 *              updated by the caller if necessary.
210 *
211 ******************************************************************************/
212
213ACPI_STATUS
214AcpiHwLowSetGpe (
215    ACPI_GPE_EVENT_INFO     *GpeEventInfo,
216    UINT32                  Action)
217{
218    ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo;
219    ACPI_STATUS             Status = AE_OK;
220    UINT64                  EnableMask;
221    UINT32                  RegisterBit;
222
223
224    ACPI_FUNCTION_ENTRY ();
225
226
227    /* Get the info block for the entire GPE register */
228
229    GpeRegisterInfo = GpeEventInfo->RegisterInfo;
230    if (!GpeRegisterInfo)
231    {
232        return (AE_NOT_EXIST);
233    }
234
235    /* Get current value of the enable register that contains this GPE */
236
237    Status = AcpiHwRead (&EnableMask, &GpeRegisterInfo->EnableAddress);
238    if (ACPI_FAILURE (Status))
239    {
240        return (Status);
241    }
242
243    /* Set or clear just the bit that corresponds to this GPE */
244
245    RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo);
246    switch (Action)
247    {
248    case ACPI_GPE_CONDITIONAL_ENABLE:
249
250        /* Only enable if the corresponding EnableMask bit is set */
251
252        if (!(RegisterBit & GpeRegisterInfo->EnableMask))
253        {
254            return (AE_BAD_PARAMETER);
255        }
256
257        ACPI_FALLTHROUGH;
258
259    case ACPI_GPE_ENABLE:
260
261        ACPI_SET_BIT (EnableMask, RegisterBit);
262        break;
263
264    case ACPI_GPE_DISABLE:
265
266        ACPI_CLEAR_BIT (EnableMask, RegisterBit);
267        break;
268
269    default:
270
271        ACPI_ERROR ((AE_INFO, "Invalid GPE Action, %u", Action));
272        return (AE_BAD_PARAMETER);
273    }
274
275    if (!(RegisterBit & GpeRegisterInfo->MaskForRun))
276    {
277        /* Write the updated enable mask */
278
279        Status = AcpiHwWrite (EnableMask, &GpeRegisterInfo->EnableAddress);
280    }
281    return (Status);
282}
283
284
285/******************************************************************************
286 *
287 * FUNCTION:    AcpiHwClearGpe
288 *
289 * PARAMETERS:  GpeEventInfo        - Info block for the GPE to be cleared
290 *
291 * RETURN:      Status
292 *
293 * DESCRIPTION: Clear the status bit for a single GPE.
294 *
295 ******************************************************************************/
296
297ACPI_STATUS
298AcpiHwClearGpe (
299    ACPI_GPE_EVENT_INFO     *GpeEventInfo)
300{
301    ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo;
302    ACPI_STATUS             Status;
303    UINT32                  RegisterBit;
304
305
306    ACPI_FUNCTION_ENTRY ();
307
308    /* Get the info block for the entire GPE register */
309
310    GpeRegisterInfo = GpeEventInfo->RegisterInfo;
311    if (!GpeRegisterInfo)
312    {
313        return (AE_NOT_EXIST);
314    }
315
316    /*
317     * Write a one to the appropriate bit in the status register to
318     * clear this GPE.
319     */
320    RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo);
321
322    Status = AcpiHwWrite (RegisterBit, &GpeRegisterInfo->StatusAddress);
323    return (Status);
324}
325
326
327/******************************************************************************
328 *
329 * FUNCTION:    AcpiHwGetGpeStatus
330 *
331 * PARAMETERS:  GpeEventInfo        - Info block for the GPE to queried
332 *              EventStatus         - Where the GPE status is returned
333 *
334 * RETURN:      Status
335 *
336 * DESCRIPTION: Return the status of a single GPE.
337 *
338 ******************************************************************************/
339
340ACPI_STATUS
341AcpiHwGetGpeStatus (
342    ACPI_GPE_EVENT_INFO     *GpeEventInfo,
343    ACPI_EVENT_STATUS       *EventStatus)
344{
345    UINT64                  InByte;
346    UINT32                  RegisterBit;
347    ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo;
348    ACPI_EVENT_STATUS       LocalEventStatus = 0;
349    ACPI_STATUS             Status;
350
351
352    ACPI_FUNCTION_ENTRY ();
353
354
355    if (!EventStatus)
356    {
357        return (AE_BAD_PARAMETER);
358    }
359
360    /* GPE currently handled? */
361
362    if (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) !=
363        ACPI_GPE_DISPATCH_NONE)
364    {
365        LocalEventStatus |= ACPI_EVENT_FLAG_HAS_HANDLER;
366    }
367
368    /* Get the info block for the entire GPE register */
369
370    GpeRegisterInfo = GpeEventInfo->RegisterInfo;
371
372    /* Get the register bitmask for this GPE */
373
374    RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo);
375
376    /* GPE currently enabled? (enabled for runtime?) */
377
378    if (RegisterBit & GpeRegisterInfo->EnableForRun)
379    {
380        LocalEventStatus |= ACPI_EVENT_FLAG_ENABLED;
381    }
382
383    /* GPE currently masked? (masked for runtime?) */
384
385    if (RegisterBit & GpeRegisterInfo->MaskForRun)
386    {
387        LocalEventStatus |= ACPI_EVENT_FLAG_MASKED;
388    }
389
390    /* GPE enabled for wake? */
391
392    if (RegisterBit & GpeRegisterInfo->EnableForWake)
393    {
394        LocalEventStatus |= ACPI_EVENT_FLAG_WAKE_ENABLED;
395    }
396
397    /* GPE currently enabled (enable bit == 1)? */
398
399    Status = AcpiHwRead (&InByte, &GpeRegisterInfo->EnableAddress);
400    if (ACPI_FAILURE (Status))
401    {
402        return (Status);
403    }
404
405    if (RegisterBit & InByte)
406    {
407        LocalEventStatus |= ACPI_EVENT_FLAG_ENABLE_SET;
408    }
409
410    /* GPE currently active (status bit == 1)? */
411
412    Status = AcpiHwRead (&InByte, &GpeRegisterInfo->StatusAddress);
413    if (ACPI_FAILURE (Status))
414    {
415        return (Status);
416    }
417
418    if (RegisterBit & InByte)
419    {
420        LocalEventStatus |= ACPI_EVENT_FLAG_STATUS_SET;
421    }
422
423    /* Set return value */
424
425    (*EventStatus) = LocalEventStatus;
426    return (AE_OK);
427}
428
429
430/******************************************************************************
431 *
432 * FUNCTION:    AcpiHwGpeEnableWrite
433 *
434 * PARAMETERS:  EnableMask          - Bit mask to write to the GPE register
435 *              GpeRegisterInfo     - Gpe Register info
436 *
437 * RETURN:      Status
438 *
439 * DESCRIPTION: Write the enable mask byte to the given GPE register.
440 *
441 ******************************************************************************/
442
443static ACPI_STATUS
444AcpiHwGpeEnableWrite (
445    UINT8                   EnableMask,
446    ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo)
447{
448    ACPI_STATUS             Status;
449
450
451    GpeRegisterInfo->EnableMask = EnableMask;
452
453    Status = AcpiHwWrite (EnableMask, &GpeRegisterInfo->EnableAddress);
454    return (Status);
455}
456
457
458/******************************************************************************
459 *
460 * FUNCTION:    AcpiHwDisableGpeBlock
461 *
462 * PARAMETERS:  GpeXruptInfo        - GPE Interrupt info
463 *              GpeBlock            - Gpe Block info
464 *
465 * RETURN:      Status
466 *
467 * DESCRIPTION: Disable all GPEs within a single GPE block
468 *
469 ******************************************************************************/
470
471ACPI_STATUS
472AcpiHwDisableGpeBlock (
473    ACPI_GPE_XRUPT_INFO     *GpeXruptInfo,
474    ACPI_GPE_BLOCK_INFO     *GpeBlock,
475    void                    *Context)
476{
477    UINT32                  i;
478    ACPI_STATUS             Status;
479
480
481    /* Examine each GPE Register within the block */
482
483    for (i = 0; i < GpeBlock->RegisterCount; i++)
484    {
485        /* Disable all GPEs in this register */
486
487        Status = AcpiHwGpeEnableWrite (0x00, &GpeBlock->RegisterInfo[i]);
488        if (ACPI_FAILURE (Status))
489        {
490            return (Status);
491        }
492    }
493
494    return (AE_OK);
495}
496
497
498/******************************************************************************
499 *
500 * FUNCTION:    AcpiHwClearGpeBlock
501 *
502 * PARAMETERS:  GpeXruptInfo        - GPE Interrupt info
503 *              GpeBlock            - Gpe Block info
504 *
505 * RETURN:      Status
506 *
507 * DESCRIPTION: Clear status bits for all GPEs within a single GPE block
508 *
509 ******************************************************************************/
510
511ACPI_STATUS
512AcpiHwClearGpeBlock (
513    ACPI_GPE_XRUPT_INFO     *GpeXruptInfo,
514    ACPI_GPE_BLOCK_INFO     *GpeBlock,
515    void                    *Context)
516{
517    UINT32                  i;
518    ACPI_STATUS             Status;
519
520
521    /* Examine each GPE Register within the block */
522
523    for (i = 0; i < GpeBlock->RegisterCount; i++)
524    {
525        /* Clear status on all GPEs in this register */
526
527        Status = AcpiHwWrite (0xFF, &GpeBlock->RegisterInfo[i].StatusAddress);
528        if (ACPI_FAILURE (Status))
529        {
530            return (Status);
531        }
532    }
533
534    return (AE_OK);
535}
536
537
538/******************************************************************************
539 *
540 * FUNCTION:    AcpiHwEnableRuntimeGpeBlock
541 *
542 * PARAMETERS:  GpeXruptInfo        - GPE Interrupt info
543 *              GpeBlock            - Gpe Block info
544 *
545 * RETURN:      Status
546 *
547 * DESCRIPTION: Enable all "runtime" GPEs within a single GPE block. Includes
548 *              combination wake/run GPEs.
549 *
550 ******************************************************************************/
551
552ACPI_STATUS
553AcpiHwEnableRuntimeGpeBlock (
554    ACPI_GPE_XRUPT_INFO     *GpeXruptInfo,
555    ACPI_GPE_BLOCK_INFO     *GpeBlock,
556    void                    *Context)
557{
558    UINT32                  i;
559    ACPI_STATUS             Status;
560    ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo;
561    UINT8                   EnableMask;
562
563
564    /* NOTE: assumes that all GPEs are currently disabled */
565
566    /* Examine each GPE Register within the block */
567
568    for (i = 0; i < GpeBlock->RegisterCount; i++)
569    {
570        GpeRegisterInfo = &GpeBlock->RegisterInfo[i];
571        if (!GpeRegisterInfo->EnableForRun)
572        {
573            continue;
574        }
575
576        /* Enable all "runtime" GPEs in this register */
577
578        EnableMask = GpeRegisterInfo->EnableForRun &
579            ~GpeRegisterInfo->MaskForRun;
580        Status = AcpiHwGpeEnableWrite (EnableMask, GpeRegisterInfo);
581        if (ACPI_FAILURE (Status))
582        {
583            return (Status);
584        }
585    }
586
587    return (AE_OK);
588}
589
590
591/******************************************************************************
592 *
593 * FUNCTION:    AcpiHwEnableWakeupGpeBlock
594 *
595 * PARAMETERS:  GpeXruptInfo        - GPE Interrupt info
596 *              GpeBlock            - Gpe Block info
597 *
598 * RETURN:      Status
599 *
600 * DESCRIPTION: Enable all "wake" GPEs within a single GPE block. Includes
601 *              combination wake/run GPEs.
602 *
603 ******************************************************************************/
604
605static ACPI_STATUS
606AcpiHwEnableWakeupGpeBlock (
607    ACPI_GPE_XRUPT_INFO     *GpeXruptInfo,
608    ACPI_GPE_BLOCK_INFO     *GpeBlock,
609    void                    *Context)
610{
611    UINT32                  i;
612    ACPI_STATUS             Status;
613    ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo;
614
615
616    /* Examine each GPE Register within the block */
617
618    for (i = 0; i < GpeBlock->RegisterCount; i++)
619    {
620        GpeRegisterInfo = &GpeBlock->RegisterInfo[i];
621
622        /*
623         * Enable all "wake" GPEs in this register and disable the
624         * remaining ones.
625         */
626        Status = AcpiHwGpeEnableWrite (GpeRegisterInfo->EnableForWake,
627            GpeRegisterInfo);
628        if (ACPI_FAILURE (Status))
629        {
630            return (Status);
631        }
632    }
633
634    return (AE_OK);
635}
636
637
638/******************************************************************************
639 *
640 * FUNCTION:    AcpiHwGetGpeBlockStatus
641 *
642 * PARAMETERS:  GpeXruptInfo    - GPE Interrupt info
643 *              GpeBlock        - Gpe Block info
644 *
645 * RETURN:      Success
646 *
647 * DESCRIPTION: Produce a combined GPE status bits mask for the given block.
648 *
649 ******************************************************************************/
650
651static ACPI_STATUS
652AcpiHwGetGpeBlockStatus(
653    ACPI_GPE_XRUPT_INFO     *GpeXruptInfo,
654    ACPI_GPE_BLOCK_INFO     *GpeBlock,
655    void *RetPtr)
656{
657    ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo;
658    UINT64                  InEnable;
659    UINT64                  InStatus;
660    ACPI_STATUS             Status;
661    UINT8                   *Ret = RetPtr;
662    UINT32                  i;
663
664
665    /* Examine each GPE Register within the block */
666
667    for (i = 0; i < GpeBlock->RegisterCount; i++)
668    {
669        GpeRegisterInfo = &GpeBlock->RegisterInfo[i];
670
671        Status = AcpiHwRead (&InEnable, &GpeRegisterInfo->EnableAddress);
672        if (ACPI_FAILURE (Status))
673        {
674            continue;
675        }
676
677        Status = AcpiHwRead (&InStatus, &GpeRegisterInfo->StatusAddress);
678        if (ACPI_FAILURE (Status))
679        {
680            continue;
681        }
682
683        *Ret |= InEnable & InStatus;
684    }
685
686    return (AE_OK);
687}
688
689
690/******************************************************************************
691 *
692 * FUNCTION:    AcpiHwDisableAllGpes
693 *
694 * PARAMETERS:  None
695 *
696 * RETURN:      Status
697 *
698 * DESCRIPTION: Disable and clear all GPEs in all GPE blocks
699 *
700 ******************************************************************************/
701
702ACPI_STATUS
703AcpiHwDisableAllGpes (
704    void)
705{
706    ACPI_STATUS             Status;
707
708
709    ACPI_FUNCTION_TRACE (HwDisableAllGpes);
710
711
712    Status = AcpiEvWalkGpeList (AcpiHwDisableGpeBlock, NULL);
713    return_ACPI_STATUS (Status);
714}
715
716
717/******************************************************************************
718 *
719 * FUNCTION:    AcpiHwEnableAllRuntimeGpes
720 *
721 * PARAMETERS:  None
722 *
723 * RETURN:      Status
724 *
725 * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks
726 *
727 ******************************************************************************/
728
729ACPI_STATUS
730AcpiHwEnableAllRuntimeGpes (
731    void)
732{
733    ACPI_STATUS             Status;
734
735
736    ACPI_FUNCTION_TRACE (HwEnableAllRuntimeGpes);
737
738
739    Status = AcpiEvWalkGpeList (AcpiHwEnableRuntimeGpeBlock, NULL);
740    return_ACPI_STATUS (Status);
741}
742
743
744/******************************************************************************
745 *
746 * FUNCTION:    AcpiHwEnableAllWakeupGpes
747 *
748 * PARAMETERS:  None
749 *
750 * RETURN:      Status
751 *
752 * DESCRIPTION: Enable all "wakeup" GPEs, in all GPE blocks
753 *
754 ******************************************************************************/
755
756ACPI_STATUS
757AcpiHwEnableAllWakeupGpes (
758    void)
759{
760    ACPI_STATUS             Status;
761
762
763    ACPI_FUNCTION_TRACE (HwEnableAllWakeupGpes);
764
765
766    Status = AcpiEvWalkGpeList (AcpiHwEnableWakeupGpeBlock, NULL);
767    return_ACPI_STATUS (Status);
768}
769
770
771/******************************************************************************
772 *
773 * FUNCTION:    AcpiHwCheckAllGpes
774 *
775 * PARAMETERS:  None
776 *
777 * RETURN:      Combined status of all GPEs
778 *
779 * DESCRIPTION: Check all enabled GPEs in all GPE blocks and return TRUE if the
780 *              status bit is set for at least one of them of FALSE otherwise.
781 *
782 ******************************************************************************/
783
784UINT8
785AcpiHwCheckAllGpes (
786    void)
787{
788    UINT8                      Ret = 0;
789
790
791    ACPI_FUNCTION_TRACE (AcpiHwCheckAllGpes);
792
793    (void) AcpiEvWalkGpeList (AcpiHwGetGpeBlockStatus, &Ret);
794    return (Ret != 0);
795}
796
797#endif /* !ACPI_REDUCED_HARDWARE */
798