1 /******************************************************************************
3 * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2006, Intel Corp.
13 * All rights reserved.
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
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
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;
38 * The above copyright and patent license is granted only if the following
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.
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
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
73 * 3.4. Intel retains all right, title, and interest in and to the Original
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.
81 * 4. Disclaimer and Export Compliance
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
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
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.
115 *****************************************************************************/
118 #define __EVXFEVNT_C__
121 #include "acevents.h"
122 #include "acnamesp.h"
123 #include "actables.h"
125 #define _COMPONENT ACPI_EVENTS
126 ACPI_MODULE_NAME ("evxfevnt")
129 /*******************************************************************************
131 * FUNCTION: AcpiEnable
137 * DESCRIPTION: Transfers the system into ACPI mode.
139 ******************************************************************************/
145 ACPI_STATUS Status
= AE_OK
;
148 ACPI_FUNCTION_TRACE (AcpiEnable
);
151 /* ACPI tables must be present */
153 if (!AcpiTbTablesLoaded ())
155 return_ACPI_STATUS (AE_NO_ACPI_TABLES
);
158 /* Check current mode */
160 if (AcpiHwGetMode() == ACPI_SYS_MODE_ACPI
)
162 ACPI_DEBUG_PRINT ((ACPI_DB_INIT
, "System is already in ACPI mode\n"));
166 /* Transition to ACPI mode */
168 Status
= AcpiHwSetMode (ACPI_SYS_MODE_ACPI
);
169 if (ACPI_FAILURE (Status
))
171 ACPI_ERROR ((AE_INFO
, "Could not transition to ACPI mode"));
172 return_ACPI_STATUS (Status
);
175 ACPI_DEBUG_PRINT ((ACPI_DB_INIT
,
176 "Transition to ACPI mode successful\n"));
179 return_ACPI_STATUS (Status
);
182 ACPI_EXPORT_SYMBOL (AcpiEnable
)
185 /*******************************************************************************
187 * FUNCTION: AcpiDisable
193 * DESCRIPTION: Transfers the system into LEGACY (non-ACPI) mode.
195 ******************************************************************************/
201 ACPI_STATUS Status
= AE_OK
;
204 ACPI_FUNCTION_TRACE (AcpiDisable
);
207 if (AcpiHwGetMode() == ACPI_SYS_MODE_LEGACY
)
209 ACPI_DEBUG_PRINT ((ACPI_DB_INIT
,
210 "System is already in legacy (non-ACPI) mode\n"));
214 /* Transition to LEGACY mode */
216 Status
= AcpiHwSetMode (ACPI_SYS_MODE_LEGACY
);
218 if (ACPI_FAILURE (Status
))
220 ACPI_ERROR ((AE_INFO
,
221 "Could not exit ACPI mode to legacy mode"));
222 return_ACPI_STATUS (Status
);
225 ACPI_DEBUG_PRINT ((ACPI_DB_INIT
, "ACPI mode disabled\n"));
228 return_ACPI_STATUS (Status
);
231 ACPI_EXPORT_SYMBOL (AcpiDisable
)
234 /*******************************************************************************
236 * FUNCTION: AcpiEnableEvent
238 * PARAMETERS: Event - The fixed eventto be enabled
243 * DESCRIPTION: Enable an ACPI event (fixed)
245 ******************************************************************************/
252 ACPI_STATUS Status
= AE_OK
;
256 ACPI_FUNCTION_TRACE (AcpiEnableEvent
);
259 /* Decode the Fixed Event */
261 if (Event
> ACPI_EVENT_MAX
)
263 return_ACPI_STATUS (AE_BAD_PARAMETER
);
267 * Enable the requested fixed event (by writing a one to the
268 * enable register bit)
270 Status
= AcpiSetRegister (AcpiGbl_FixedEventInfo
[Event
].EnableRegisterId
, 1);
271 if (ACPI_FAILURE (Status
))
273 return_ACPI_STATUS (Status
);
276 /* Make sure that the hardware responded */
278 Status
= AcpiGetRegister (AcpiGbl_FixedEventInfo
[Event
].EnableRegisterId
,
280 if (ACPI_FAILURE (Status
))
282 return_ACPI_STATUS (Status
);
287 ACPI_ERROR ((AE_INFO
,
288 "Could not enable %s event", AcpiUtGetEventName (Event
)));
289 return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE
);
292 return_ACPI_STATUS (Status
);
295 ACPI_EXPORT_SYMBOL (AcpiEnableEvent
)
298 /*******************************************************************************
300 * FUNCTION: AcpiSetGpeType
302 * PARAMETERS: GpeDevice - Parent GPE Device
303 * GpeNumber - GPE level within the GPE block
304 * Type - New GPE type
308 * DESCRIPTION: Set the type of an individual GPE
310 ******************************************************************************/
314 ACPI_HANDLE GpeDevice
,
318 ACPI_STATUS Status
= AE_OK
;
319 ACPI_GPE_EVENT_INFO
*GpeEventInfo
;
322 ACPI_FUNCTION_TRACE (AcpiSetGpeType
);
325 /* Ensure that we have a valid GPE number */
327 GpeEventInfo
= AcpiEvGetGpeEventInfo (GpeDevice
, GpeNumber
);
330 Status
= AE_BAD_PARAMETER
;
334 if ((GpeEventInfo
->Flags
& ACPI_GPE_TYPE_MASK
) == Type
)
336 return_ACPI_STATUS (AE_OK
);
339 /* Set the new type (will disable GPE if currently enabled) */
341 Status
= AcpiEvSetGpeType (GpeEventInfo
, Type
);
344 return_ACPI_STATUS (Status
);
347 ACPI_EXPORT_SYMBOL (AcpiSetGpeType
)
350 /*******************************************************************************
352 * FUNCTION: AcpiEnableGpe
354 * PARAMETERS: GpeDevice - Parent GPE Device
355 * GpeNumber - GPE level within the GPE block
356 * Flags - Just enable, or also wake enable?
357 * Called from ISR or not
361 * DESCRIPTION: Enable an ACPI event (general purpose)
363 ******************************************************************************/
367 ACPI_HANDLE GpeDevice
,
371 ACPI_STATUS Status
= AE_OK
;
372 ACPI_GPE_EVENT_INFO
*GpeEventInfo
;
375 ACPI_FUNCTION_TRACE (AcpiEnableGpe
);
378 /* Use semaphore lock if not executing at interrupt level */
380 if (Flags
& ACPI_NOT_ISR
)
382 Status
= AcpiUtAcquireMutex (ACPI_MTX_EVENTS
);
383 if (ACPI_FAILURE (Status
))
385 return_ACPI_STATUS (Status
);
389 /* Ensure that we have a valid GPE number */
391 GpeEventInfo
= AcpiEvGetGpeEventInfo (GpeDevice
, GpeNumber
);
394 Status
= AE_BAD_PARAMETER
;
398 /* Perform the enable */
400 Status
= AcpiEvEnableGpe (GpeEventInfo
, TRUE
);
403 if (Flags
& ACPI_NOT_ISR
)
405 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS
);
407 return_ACPI_STATUS (Status
);
410 ACPI_EXPORT_SYMBOL (AcpiEnableGpe
)
413 /*******************************************************************************
415 * FUNCTION: AcpiDisableGpe
417 * PARAMETERS: GpeDevice - Parent GPE Device
418 * GpeNumber - GPE level within the GPE block
419 * Flags - Just disable, or also wake disable?
420 * Called from ISR or not
424 * DESCRIPTION: Disable an ACPI event (general purpose)
426 ******************************************************************************/
430 ACPI_HANDLE GpeDevice
,
434 ACPI_STATUS Status
= AE_OK
;
435 ACPI_GPE_EVENT_INFO
*GpeEventInfo
;
438 ACPI_FUNCTION_TRACE (AcpiDisableGpe
);
441 /* Use semaphore lock if not executing at interrupt level */
443 if (Flags
& ACPI_NOT_ISR
)
445 Status
= AcpiUtAcquireMutex (ACPI_MTX_EVENTS
);
446 if (ACPI_FAILURE (Status
))
448 return_ACPI_STATUS (Status
);
452 /* Ensure that we have a valid GPE number */
454 GpeEventInfo
= AcpiEvGetGpeEventInfo (GpeDevice
, GpeNumber
);
457 Status
= AE_BAD_PARAMETER
;
461 Status
= AcpiEvDisableGpe (GpeEventInfo
);
464 if (Flags
& ACPI_NOT_ISR
)
466 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS
);
468 return_ACPI_STATUS (Status
);
471 ACPI_EXPORT_SYMBOL (AcpiDisableGpe
)
474 /*******************************************************************************
476 * FUNCTION: AcpiDisableEvent
478 * PARAMETERS: Event - The fixed eventto be enabled
483 * DESCRIPTION: Disable an ACPI event (fixed)
485 ******************************************************************************/
492 ACPI_STATUS Status
= AE_OK
;
496 ACPI_FUNCTION_TRACE (AcpiDisableEvent
);
499 /* Decode the Fixed Event */
501 if (Event
> ACPI_EVENT_MAX
)
503 return_ACPI_STATUS (AE_BAD_PARAMETER
);
507 * Disable the requested fixed event (by writing a zero to the
508 * enable register bit)
510 Status
= AcpiSetRegister (AcpiGbl_FixedEventInfo
[Event
].EnableRegisterId
, 0);
511 if (ACPI_FAILURE (Status
))
513 return_ACPI_STATUS (Status
);
516 Status
= AcpiGetRegister (AcpiGbl_FixedEventInfo
[Event
].EnableRegisterId
,
518 if (ACPI_FAILURE (Status
))
520 return_ACPI_STATUS (Status
);
525 ACPI_ERROR ((AE_INFO
,
526 "Could not disable %s events", AcpiUtGetEventName (Event
)));
527 return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE
);
530 return_ACPI_STATUS (Status
);
533 ACPI_EXPORT_SYMBOL (AcpiDisableEvent
)
536 /*******************************************************************************
538 * FUNCTION: AcpiClearEvent
540 * PARAMETERS: Event - The fixed event to be cleared
544 * DESCRIPTION: Clear an ACPI event (fixed)
546 ******************************************************************************/
552 ACPI_STATUS Status
= AE_OK
;
555 ACPI_FUNCTION_TRACE (AcpiClearEvent
);
558 /* Decode the Fixed Event */
560 if (Event
> ACPI_EVENT_MAX
)
562 return_ACPI_STATUS (AE_BAD_PARAMETER
);
566 * Clear the requested fixed event (By writing a one to the
567 * status register bit)
569 Status
= AcpiSetRegister (AcpiGbl_FixedEventInfo
[Event
].StatusRegisterId
, 1);
571 return_ACPI_STATUS (Status
);
574 ACPI_EXPORT_SYMBOL (AcpiClearEvent
)
577 /*******************************************************************************
579 * FUNCTION: AcpiClearGpe
581 * PARAMETERS: GpeDevice - Parent GPE Device
582 * GpeNumber - GPE level within the GPE block
583 * Flags - Called from an ISR or not
587 * DESCRIPTION: Clear an ACPI event (general purpose)
589 ******************************************************************************/
593 ACPI_HANDLE GpeDevice
,
597 ACPI_STATUS Status
= AE_OK
;
598 ACPI_GPE_EVENT_INFO
*GpeEventInfo
;
601 ACPI_FUNCTION_TRACE (AcpiClearGpe
);
604 /* Use semaphore lock if not executing at interrupt level */
606 if (Flags
& ACPI_NOT_ISR
)
608 Status
= AcpiUtAcquireMutex (ACPI_MTX_EVENTS
);
609 if (ACPI_FAILURE (Status
))
611 return_ACPI_STATUS (Status
);
615 /* Ensure that we have a valid GPE number */
617 GpeEventInfo
= AcpiEvGetGpeEventInfo (GpeDevice
, GpeNumber
);
620 Status
= AE_BAD_PARAMETER
;
624 Status
= AcpiHwClearGpe (GpeEventInfo
);
627 if (Flags
& ACPI_NOT_ISR
)
629 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS
);
631 return_ACPI_STATUS (Status
);
634 ACPI_EXPORT_SYMBOL (AcpiClearGpe
)
637 /*******************************************************************************
639 * FUNCTION: AcpiGetEventStatus
641 * PARAMETERS: Event - The fixed event
642 * EventStatus - Where the current status of the event will
647 * DESCRIPTION: Obtains and returns the current status of the event
649 ******************************************************************************/
654 ACPI_EVENT_STATUS
*EventStatus
)
656 ACPI_STATUS Status
= AE_OK
;
659 ACPI_FUNCTION_TRACE (AcpiGetEventStatus
);
664 return_ACPI_STATUS (AE_BAD_PARAMETER
);
667 /* Decode the Fixed Event */
669 if (Event
> ACPI_EVENT_MAX
)
671 return_ACPI_STATUS (AE_BAD_PARAMETER
);
674 /* Get the status of the requested fixed event */
676 Status
= AcpiGetRegister (AcpiGbl_FixedEventInfo
[Event
].StatusRegisterId
,
679 return_ACPI_STATUS (Status
);
682 ACPI_EXPORT_SYMBOL (AcpiGetEventStatus
)
685 /*******************************************************************************
687 * FUNCTION: AcpiGetGpeStatus
689 * PARAMETERS: GpeDevice - Parent GPE Device
690 * GpeNumber - GPE level within the GPE block
691 * Flags - Called from an ISR or not
692 * EventStatus - Where the current status of the event will
697 * DESCRIPTION: Get status of an event (general purpose)
699 ******************************************************************************/
703 ACPI_HANDLE GpeDevice
,
706 ACPI_EVENT_STATUS
*EventStatus
)
708 ACPI_STATUS Status
= AE_OK
;
709 ACPI_GPE_EVENT_INFO
*GpeEventInfo
;
712 ACPI_FUNCTION_TRACE (AcpiGetGpeStatus
);
715 /* Use semaphore lock if not executing at interrupt level */
717 if (Flags
& ACPI_NOT_ISR
)
719 Status
= AcpiUtAcquireMutex (ACPI_MTX_EVENTS
);
720 if (ACPI_FAILURE (Status
))
722 return_ACPI_STATUS (Status
);
726 /* Ensure that we have a valid GPE number */
728 GpeEventInfo
= AcpiEvGetGpeEventInfo (GpeDevice
, GpeNumber
);
731 Status
= AE_BAD_PARAMETER
;
735 /* Obtain status on the requested GPE number */
737 Status
= AcpiHwGetGpeStatus (GpeEventInfo
, EventStatus
);
740 if (Flags
& ACPI_NOT_ISR
)
742 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS
);
744 return_ACPI_STATUS (Status
);
747 ACPI_EXPORT_SYMBOL (AcpiGetGpeStatus
)
750 /*******************************************************************************
752 * FUNCTION: AcpiInstallGpeBlock
754 * PARAMETERS: GpeDevice - Handle to the parent GPE Block Device
755 * GpeBlockAddress - Address and SpaceID
756 * RegisterCount - Number of GPE register pairs in the block
757 * InterruptNumber - H/W interrupt for the block
761 * DESCRIPTION: Create and Install a block of GPE registers
763 ******************************************************************************/
766 AcpiInstallGpeBlock (
767 ACPI_HANDLE GpeDevice
,
768 ACPI_GENERIC_ADDRESS
*GpeBlockAddress
,
769 UINT32 RegisterCount
,
770 UINT32 InterruptNumber
)
773 ACPI_OPERAND_OBJECT
*ObjDesc
;
774 ACPI_NAMESPACE_NODE
*Node
;
775 ACPI_GPE_BLOCK_INFO
*GpeBlock
;
778 ACPI_FUNCTION_TRACE (AcpiInstallGpeBlock
);
782 (!GpeBlockAddress
) ||
785 return_ACPI_STATUS (AE_BAD_PARAMETER
);
788 Status
= AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE
);
789 if (ACPI_FAILURE (Status
))
794 Node
= AcpiNsMapHandleToNode (GpeDevice
);
797 Status
= AE_BAD_PARAMETER
;
802 * For user-installed GPE Block Devices, the GpeBlockBaseNumber
805 Status
= AcpiEvCreateGpeBlock (Node
, GpeBlockAddress
, RegisterCount
,
806 0, InterruptNumber
, &GpeBlock
);
807 if (ACPI_FAILURE (Status
))
812 /* Run the _PRW methods and enable the GPEs */
814 Status
= AcpiEvInitializeGpeBlock (Node
, GpeBlock
);
815 if (ACPI_FAILURE (Status
))
820 /* Get the DeviceObject attached to the node */
822 ObjDesc
= AcpiNsGetAttachedObject (Node
);
825 /* No object, create a new one */
827 ObjDesc
= AcpiUtCreateInternalObject (ACPI_TYPE_DEVICE
);
830 Status
= AE_NO_MEMORY
;
834 Status
= AcpiNsAttachObject (Node
, ObjDesc
, ACPI_TYPE_DEVICE
);
836 /* Remove local reference to the object */
838 AcpiUtRemoveReference (ObjDesc
);
840 if (ACPI_FAILURE (Status
))
846 /* Install the GPE block in the DeviceObject */
848 ObjDesc
->Device
.GpeBlock
= GpeBlock
;
852 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE
);
853 return_ACPI_STATUS (Status
);
856 ACPI_EXPORT_SYMBOL (AcpiInstallGpeBlock
)
859 /*******************************************************************************
861 * FUNCTION: AcpiRemoveGpeBlock
863 * PARAMETERS: GpeDevice - Handle to the parent GPE Block Device
867 * DESCRIPTION: Remove a previously installed block of GPE registers
869 ******************************************************************************/
873 ACPI_HANDLE GpeDevice
)
875 ACPI_OPERAND_OBJECT
*ObjDesc
;
877 ACPI_NAMESPACE_NODE
*Node
;
880 ACPI_FUNCTION_TRACE (AcpiRemoveGpeBlock
);
885 return_ACPI_STATUS (AE_BAD_PARAMETER
);
888 Status
= AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE
);
889 if (ACPI_FAILURE (Status
))
894 Node
= AcpiNsMapHandleToNode (GpeDevice
);
897 Status
= AE_BAD_PARAMETER
;
901 /* Get the DeviceObject attached to the node */
903 ObjDesc
= AcpiNsGetAttachedObject (Node
);
905 !ObjDesc
->Device
.GpeBlock
)
907 return_ACPI_STATUS (AE_NULL_OBJECT
);
910 /* Delete the GPE block (but not the DeviceObject) */
912 Status
= AcpiEvDeleteGpeBlock (ObjDesc
->Device
.GpeBlock
);
913 if (ACPI_SUCCESS (Status
))
915 ObjDesc
->Device
.GpeBlock
= NULL
;
919 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE
);
920 return_ACPI_STATUS (Status
);
923 ACPI_EXPORT_SYMBOL (AcpiRemoveGpeBlock
)