1 /******************************************************************************
3 * Module Name: evxface - External interfaces for ACPI events
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2005, 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 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.
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 __EVXFACE_C__
121 #include "acnamesp.h"
122 #include "acevents.h"
123 #include "acinterp.h"
125 #define _COMPONENT ACPI_EVENTS
126 ACPI_MODULE_NAME ("evxface")
129 /*******************************************************************************
131 * FUNCTION: AcpiInstallExceptionHandler
133 * PARAMETERS: Handler - Pointer to the handler function for the
138 * DESCRIPTION: Saves the pointer to the handler function
140 ******************************************************************************/
143 AcpiInstallExceptionHandler (
144 ACPI_EXCEPTION_HANDLER Handler
)
149 ACPI_FUNCTION_TRACE ("AcpiInstallExceptionHandler");
152 Status
= AcpiUtAcquireMutex (ACPI_MTX_EVENTS
);
153 if (ACPI_FAILURE (Status
))
155 return_ACPI_STATUS (Status
);
158 /* Don't allow two handlers. */
160 if (AcpiGbl_ExceptionHandler
)
162 Status
= AE_ALREADY_EXISTS
;
166 /* Install the handler */
168 AcpiGbl_ExceptionHandler
= Handler
;
171 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS
);
172 return_ACPI_STATUS (Status
);
176 /*******************************************************************************
178 * FUNCTION: AcpiInstallFixedEventHandler
180 * PARAMETERS: Event - Event type to enable.
181 * Handler - Pointer to the handler function for the
183 * Context - Value passed to the handler on each GPE
187 * DESCRIPTION: Saves the pointer to the handler function and then enables the
190 ******************************************************************************/
193 AcpiInstallFixedEventHandler (
195 ACPI_EVENT_HANDLER Handler
,
201 ACPI_FUNCTION_TRACE ("AcpiInstallFixedEventHandler");
204 /* Parameter validation */
206 if (Event
> ACPI_EVENT_MAX
)
208 return_ACPI_STATUS (AE_BAD_PARAMETER
);
211 Status
= AcpiUtAcquireMutex (ACPI_MTX_EVENTS
);
212 if (ACPI_FAILURE (Status
))
214 return_ACPI_STATUS (Status
);
217 /* Don't allow two handlers. */
219 if (NULL
!= AcpiGbl_FixedEventHandlers
[Event
].Handler
)
221 Status
= AE_ALREADY_EXISTS
;
225 /* Install the handler before enabling the event */
227 AcpiGbl_FixedEventHandlers
[Event
].Handler
= Handler
;
228 AcpiGbl_FixedEventHandlers
[Event
].Context
= Context
;
230 Status
= AcpiEnableEvent (Event
, 0);
231 if (ACPI_FAILURE (Status
))
233 ACPI_DEBUG_PRINT ((ACPI_DB_WARN
, "Could not enable fixed event.\n"));
235 /* Remove the handler */
237 AcpiGbl_FixedEventHandlers
[Event
].Handler
= NULL
;
238 AcpiGbl_FixedEventHandlers
[Event
].Context
= NULL
;
242 ACPI_DEBUG_PRINT ((ACPI_DB_INFO
,
243 "Enabled fixed event %X, Handler=%p\n", Event
, Handler
));
248 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS
);
249 return_ACPI_STATUS (Status
);
253 /*******************************************************************************
255 * FUNCTION: AcpiRemoveFixedEventHandler
257 * PARAMETERS: Event - Event type to disable.
258 * Handler - Address of the handler
262 * DESCRIPTION: Disables the event and unregisters the event handler.
264 ******************************************************************************/
267 AcpiRemoveFixedEventHandler (
269 ACPI_EVENT_HANDLER Handler
)
271 ACPI_STATUS Status
= AE_OK
;
274 ACPI_FUNCTION_TRACE ("AcpiRemoveFixedEventHandler");
277 /* Parameter validation */
279 if (Event
> ACPI_EVENT_MAX
)
281 return_ACPI_STATUS (AE_BAD_PARAMETER
);
284 Status
= AcpiUtAcquireMutex (ACPI_MTX_EVENTS
);
285 if (ACPI_FAILURE (Status
))
287 return_ACPI_STATUS (Status
);
290 /* Disable the event before removing the handler */
292 Status
= AcpiDisableEvent (Event
, 0);
294 /* Always Remove the handler */
296 AcpiGbl_FixedEventHandlers
[Event
].Handler
= NULL
;
297 AcpiGbl_FixedEventHandlers
[Event
].Context
= NULL
;
299 if (ACPI_FAILURE (Status
))
301 ACPI_DEBUG_PRINT ((ACPI_DB_WARN
,
302 "Could not write to fixed event enable register.\n"));
306 ACPI_DEBUG_PRINT ((ACPI_DB_INFO
, "Disabled fixed event %X.\n", Event
));
309 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS
);
310 return_ACPI_STATUS (Status
);
314 /*******************************************************************************
316 * FUNCTION: AcpiInstallNotifyHandler
318 * PARAMETERS: Device - The device for which notifies will be handled
319 * HandlerType - The type of handler:
320 * ACPI_SYSTEM_NOTIFY: SystemHandler (00-7f)
321 * ACPI_DEVICE_NOTIFY: DriverHandler (80-ff)
322 * ACPI_ALL_NOTIFY: both system and device
323 * Handler - Address of the handler
324 * Context - Value passed to the handler on each GPE
328 * DESCRIPTION: Install a handler for notifies on an ACPI device
330 ******************************************************************************/
333 AcpiInstallNotifyHandler (
336 ACPI_NOTIFY_HANDLER Handler
,
339 ACPI_OPERAND_OBJECT
*ObjDesc
;
340 ACPI_OPERAND_OBJECT
*NotifyObj
;
341 ACPI_NAMESPACE_NODE
*Node
;
345 ACPI_FUNCTION_TRACE ("AcpiInstallNotifyHandler");
348 /* Parameter validation */
352 (HandlerType
> ACPI_MAX_NOTIFY_HANDLER_TYPE
))
354 return_ACPI_STATUS (AE_BAD_PARAMETER
);
357 Status
= AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE
);
358 if (ACPI_FAILURE (Status
))
360 return_ACPI_STATUS (Status
);
363 /* Convert and validate the device handle */
365 Node
= AcpiNsMapHandleToNode (Device
);
368 Status
= AE_BAD_PARAMETER
;
374 * Registering a notify handler on the root object indicates that the
375 * caller wishes to receive notifications for all objects. Note that
376 * only one <external> global handler can be regsitered (per notify type).
378 if (Device
== ACPI_ROOT_OBJECT
)
380 /* Make sure the handler is not already installed */
382 if (((HandlerType
& ACPI_SYSTEM_NOTIFY
) &&
383 AcpiGbl_SystemNotify
.Handler
) ||
384 ((HandlerType
& ACPI_DEVICE_NOTIFY
) &&
385 AcpiGbl_DeviceNotify
.Handler
))
387 Status
= AE_ALREADY_EXISTS
;
391 if (HandlerType
& ACPI_SYSTEM_NOTIFY
)
393 AcpiGbl_SystemNotify
.Node
= Node
;
394 AcpiGbl_SystemNotify
.Handler
= Handler
;
395 AcpiGbl_SystemNotify
.Context
= Context
;
398 if (HandlerType
& ACPI_DEVICE_NOTIFY
)
400 AcpiGbl_DeviceNotify
.Node
= Node
;
401 AcpiGbl_DeviceNotify
.Handler
= Handler
;
402 AcpiGbl_DeviceNotify
.Context
= Context
;
405 /* Global notify handler installed */
410 * Caller will only receive notifications specific to the target object.
411 * Note that only certain object types can receive notifications.
415 /* Notifies allowed on this object? */
417 if (!AcpiEvIsNotifyObject (Node
))
423 /* Check for an existing internal object */
425 ObjDesc
= AcpiNsGetAttachedObject (Node
);
428 /* Object exists - make sure there's no handler */
430 if (((HandlerType
& ACPI_SYSTEM_NOTIFY
) &&
431 ObjDesc
->CommonNotify
.SystemNotify
) ||
432 ((HandlerType
& ACPI_DEVICE_NOTIFY
) &&
433 ObjDesc
->CommonNotify
.DeviceNotify
))
435 Status
= AE_ALREADY_EXISTS
;
441 /* Create a new object */
443 ObjDesc
= AcpiUtCreateInternalObject (Node
->Type
);
446 Status
= AE_NO_MEMORY
;
450 /* Attach new object to the Node */
452 Status
= AcpiNsAttachObject (Device
, ObjDesc
, Node
->Type
);
454 /* Remove local reference to the object */
456 AcpiUtRemoveReference (ObjDesc
);
457 if (ACPI_FAILURE (Status
))
463 /* Install the handler */
465 NotifyObj
= AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_NOTIFY
);
468 Status
= AE_NO_MEMORY
;
472 NotifyObj
->Notify
.Node
= Node
;
473 NotifyObj
->Notify
.Handler
= Handler
;
474 NotifyObj
->Notify
.Context
= Context
;
476 if (HandlerType
& ACPI_SYSTEM_NOTIFY
)
478 ObjDesc
->CommonNotify
.SystemNotify
= NotifyObj
;
481 if (HandlerType
& ACPI_DEVICE_NOTIFY
)
483 ObjDesc
->CommonNotify
.DeviceNotify
= NotifyObj
;
486 if (HandlerType
== ACPI_ALL_NOTIFY
)
488 /* Extra ref if installed in both */
490 AcpiUtAddReference (NotifyObj
);
496 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE
);
497 return_ACPI_STATUS (Status
);
501 /*******************************************************************************
503 * FUNCTION: AcpiRemoveNotifyHandler
505 * PARAMETERS: Device - The device for which notifies will be handled
506 * HandlerType - The type of handler:
507 * ACPI_SYSTEM_NOTIFY: SystemHandler (00-7f)
508 * ACPI_DEVICE_NOTIFY: DriverHandler (80-ff)
509 * ACPI_ALL_NOTIFY: both system and device
510 * Handler - Address of the handler
514 * DESCRIPTION: Remove a handler for notifies on an ACPI device
516 ******************************************************************************/
519 AcpiRemoveNotifyHandler (
522 ACPI_NOTIFY_HANDLER Handler
)
524 ACPI_OPERAND_OBJECT
*NotifyObj
;
525 ACPI_OPERAND_OBJECT
*ObjDesc
;
526 ACPI_NAMESPACE_NODE
*Node
;
530 ACPI_FUNCTION_TRACE ("AcpiRemoveNotifyHandler");
533 /* Parameter validation */
537 (HandlerType
> ACPI_MAX_NOTIFY_HANDLER_TYPE
))
539 return_ACPI_STATUS (AE_BAD_PARAMETER
);
542 Status
= AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE
);
543 if (ACPI_FAILURE (Status
))
545 return_ACPI_STATUS (Status
);
548 /* Convert and validate the device handle */
550 Node
= AcpiNsMapHandleToNode (Device
);
553 Status
= AE_BAD_PARAMETER
;
559 if (Device
== ACPI_ROOT_OBJECT
)
561 ACPI_DEBUG_PRINT ((ACPI_DB_INFO
, "Removing notify handler for ROOT object.\n"));
563 if (((HandlerType
& ACPI_SYSTEM_NOTIFY
) &&
564 !AcpiGbl_SystemNotify
.Handler
) ||
565 ((HandlerType
& ACPI_DEVICE_NOTIFY
) &&
566 !AcpiGbl_DeviceNotify
.Handler
))
568 Status
= AE_NOT_EXIST
;
572 if (HandlerType
& ACPI_SYSTEM_NOTIFY
)
574 AcpiGbl_SystemNotify
.Node
= NULL
;
575 AcpiGbl_SystemNotify
.Handler
= NULL
;
576 AcpiGbl_SystemNotify
.Context
= NULL
;
579 if (HandlerType
& ACPI_DEVICE_NOTIFY
)
581 AcpiGbl_DeviceNotify
.Node
= NULL
;
582 AcpiGbl_DeviceNotify
.Handler
= NULL
;
583 AcpiGbl_DeviceNotify
.Context
= NULL
;
587 /* All Other Objects */
591 /* Notifies allowed on this object? */
593 if (!AcpiEvIsNotifyObject (Node
))
599 /* Check for an existing internal object */
601 ObjDesc
= AcpiNsGetAttachedObject (Node
);
604 Status
= AE_NOT_EXIST
;
608 /* Object exists - make sure there's an existing handler */
610 if (HandlerType
& ACPI_SYSTEM_NOTIFY
)
612 NotifyObj
= ObjDesc
->CommonNotify
.SystemNotify
;
614 (NotifyObj
->Notify
.Handler
!= Handler
))
616 Status
= AE_BAD_PARAMETER
;
620 /* Remove the handler */
622 ObjDesc
->CommonNotify
.SystemNotify
= NULL
;
623 AcpiUtRemoveReference (NotifyObj
);
626 if (HandlerType
& ACPI_DEVICE_NOTIFY
)
628 NotifyObj
= ObjDesc
->CommonNotify
.DeviceNotify
;
630 (NotifyObj
->Notify
.Handler
!= Handler
))
632 Status
= AE_BAD_PARAMETER
;
636 /* Remove the handler */
638 ObjDesc
->CommonNotify
.DeviceNotify
= NULL
;
639 AcpiUtRemoveReference (NotifyObj
);
645 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE
);
646 return_ACPI_STATUS (Status
);
650 /*******************************************************************************
652 * FUNCTION: AcpiInstallGpeHandler
654 * PARAMETERS: GpeNumber - The GPE number within the GPE block
655 * GpeBlock - GPE block (NULL == FADT GPEs)
656 * Type - Whether this GPE should be treated as an
657 * edge- or level-triggered interrupt.
658 * Address - Address of the handler
659 * Context - Value passed to the handler on each GPE
663 * DESCRIPTION: Install a handler for a General Purpose Event.
665 ******************************************************************************/
668 AcpiInstallGpeHandler (
669 ACPI_HANDLE GpeDevice
,
672 ACPI_EVENT_HANDLER Address
,
675 ACPI_GPE_EVENT_INFO
*GpeEventInfo
;
676 ACPI_HANDLER_INFO
*Handler
;
680 ACPI_FUNCTION_TRACE ("AcpiInstallGpeHandler");
683 /* Parameter validation */
685 if ((!Address
) || (Type
> ACPI_GPE_XRUPT_TYPE_MASK
))
687 return_ACPI_STATUS (AE_BAD_PARAMETER
);
690 Status
= AcpiUtAcquireMutex (ACPI_MTX_EVENTS
);
691 if (ACPI_FAILURE (Status
))
693 return_ACPI_STATUS (Status
);
696 /* Ensure that we have a valid GPE number */
698 GpeEventInfo
= AcpiEvGetGpeEventInfo (GpeDevice
, GpeNumber
);
701 Status
= AE_BAD_PARAMETER
;
705 /* Make sure that there isn't a handler there already */
707 if ((GpeEventInfo
->Flags
& ACPI_GPE_DISPATCH_MASK
) == ACPI_GPE_DISPATCH_HANDLER
)
709 Status
= AE_ALREADY_EXISTS
;
713 /* Allocate and init handler object */
715 Handler
= ACPI_MEM_CALLOCATE (sizeof (ACPI_HANDLER_INFO
));
718 Status
= AE_NO_MEMORY
;
722 Handler
->Address
= Address
;
723 Handler
->Context
= Context
;
724 Handler
->MethodNode
= GpeEventInfo
->Dispatch
.MethodNode
;
726 /* Disable the GPE before installing the handler */
728 Status
= AcpiEvDisableGpe (GpeEventInfo
);
729 if (ACPI_FAILURE (Status
))
734 /* Install the handler */
736 AcpiOsAcquireLock (AcpiGbl_GpeLock
, ACPI_NOT_ISR
);
737 GpeEventInfo
->Dispatch
.Handler
= Handler
;
739 /* Setup up dispatch flags to indicate handler (vs. method) */
741 GpeEventInfo
->Flags
&= ~(ACPI_GPE_XRUPT_TYPE_MASK
| ACPI_GPE_DISPATCH_MASK
); /* Clear bits */
742 GpeEventInfo
->Flags
|= (UINT8
) (Type
| ACPI_GPE_DISPATCH_HANDLER
);
744 AcpiOsReleaseLock (AcpiGbl_GpeLock
, ACPI_NOT_ISR
);
748 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS
);
749 return_ACPI_STATUS (Status
);
753 /*******************************************************************************
755 * FUNCTION: AcpiRemoveGpeHandler
757 * PARAMETERS: GpeNumber - The event to remove a handler
758 * GpeBlock - GPE block (NULL == FADT GPEs)
759 * Address - Address of the handler
763 * DESCRIPTION: Remove a handler for a General Purpose AcpiEvent.
765 ******************************************************************************/
768 AcpiRemoveGpeHandler (
769 ACPI_HANDLE GpeDevice
,
771 ACPI_EVENT_HANDLER Address
)
773 ACPI_GPE_EVENT_INFO
*GpeEventInfo
;
774 ACPI_HANDLER_INFO
*Handler
;
778 ACPI_FUNCTION_TRACE ("AcpiRemoveGpeHandler");
781 /* Parameter validation */
785 return_ACPI_STATUS (AE_BAD_PARAMETER
);
788 Status
= AcpiUtAcquireMutex (ACPI_MTX_EVENTS
);
789 if (ACPI_FAILURE (Status
))
791 return_ACPI_STATUS (Status
);
794 /* Ensure that we have a valid GPE number */
796 GpeEventInfo
= AcpiEvGetGpeEventInfo (GpeDevice
, GpeNumber
);
799 Status
= AE_BAD_PARAMETER
;
803 /* Make sure that a handler is indeed installed */
805 if ((GpeEventInfo
->Flags
& ACPI_GPE_DISPATCH_MASK
) != ACPI_GPE_DISPATCH_HANDLER
)
807 Status
= AE_NOT_EXIST
;
811 /* Make sure that the installed handler is the same */
813 if (GpeEventInfo
->Dispatch
.Handler
->Address
!= Address
)
815 Status
= AE_BAD_PARAMETER
;
819 /* Disable the GPE before removing the handler */
821 Status
= AcpiEvDisableGpe (GpeEventInfo
);
822 if (ACPI_FAILURE (Status
))
827 /* Remove the handler */
829 AcpiOsAcquireLock (AcpiGbl_GpeLock
, ACPI_NOT_ISR
);
830 Handler
= GpeEventInfo
->Dispatch
.Handler
;
832 /* Restore Method node (if any), set dispatch flags */
834 GpeEventInfo
->Dispatch
.MethodNode
= Handler
->MethodNode
;
835 GpeEventInfo
->Flags
&= ~ACPI_GPE_DISPATCH_MASK
; /* Clear bits */
836 if (Handler
->MethodNode
)
838 GpeEventInfo
->Flags
|= ACPI_GPE_DISPATCH_METHOD
;
840 AcpiOsReleaseLock (AcpiGbl_GpeLock
, ACPI_NOT_ISR
);
842 /* Now we can free the handler object */
844 ACPI_MEM_FREE (Handler
);
848 (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS
);
849 return_ACPI_STATUS (Status
);
853 /*******************************************************************************
855 * FUNCTION: AcpiAcquireGlobalLock
857 * PARAMETERS: Timeout - How long the caller is willing to wait
858 * OutHandle - A handle to the lock if acquired
862 * DESCRIPTION: Acquire the ACPI Global Lock
864 ******************************************************************************/
867 AcpiAcquireGlobalLock (
876 return (AE_BAD_PARAMETER
);
879 Status
= AcpiExEnterInterpreter ();
880 if (ACPI_FAILURE (Status
))
885 Status
= AcpiEvAcquireGlobalLock (Timeout
);
886 AcpiExExitInterpreter ();
888 if (ACPI_SUCCESS (Status
))
890 AcpiGbl_GlobalLockHandle
++;
891 *Handle
= AcpiGbl_GlobalLockHandle
;
898 /*******************************************************************************
900 * FUNCTION: AcpiReleaseGlobalLock
902 * PARAMETERS: Handle - Returned from AcpiAcquireGlobalLock
906 * DESCRIPTION: Release the ACPI Global Lock
908 ******************************************************************************/
911 AcpiReleaseGlobalLock (
917 if (Handle
!= AcpiGbl_GlobalLockHandle
)
919 return (AE_NOT_ACQUIRED
);
922 Status
= AcpiEvReleaseGlobalLock ();