747 lines
22 KiB
C
747 lines
22 KiB
C
/******************************************************************************
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|
*
|
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* Module Name: evxface - External interfaces for ACPI events
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* $Revision: 97 $
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*
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*****************************************************************************/
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/******************************************************************************
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*
|
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999, Intel Corp. All rights
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* reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
|
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* you this software, covering your right to use that party's intellectual
|
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
|
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
|
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
|
|
* Redistribution of source code of any substantial prton of the Covered
|
|
* Code or modification with rights to further distribute source must include
|
|
* the above Copyright Notice, the above License, this list of Conditions,
|
|
* and the following Disclaimer and Export Compliance provision. In addition,
|
|
* Licensee must cause all Covered Code to which Licensee contributes to
|
|
* contain a file documenting the changes Licensee made to create that Covered
|
|
* Code and the date of any change. Licensee must include in that file the
|
|
* documentation of any changes made by any predecessor Licensee. Licensee
|
|
* must include a prominent statement that the modification is derived,
|
|
* directly or indirectly, from Original Intel Code.
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|
*
|
|
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
|
|
* Redistribution of source code of any substantial portion of the Covered
|
|
* Code or modification without rights to further distribute source must
|
|
* include the following Disclaimer and Export Compliance provision in the
|
|
* documentation and/or other materials provided with distribution. In
|
|
* addition, Licensee may not authorize further sublicense of source of any
|
|
* portion of the Covered Code, and must include terms to the effect that the
|
|
* license from Licensee to its licensee is limited to the intellectual
|
|
* property embodied in the software Licensee provides to its licensee, and
|
|
* not to intellectual property embodied in modifications its licensee may
|
|
* make.
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*
|
|
* 3.3. Redistribution of Executable. Redistribution in executable form of any
|
|
* substantial portion of the Covered Code or modification must reproduce the
|
|
* above Copyright Notice, and the following Disclaimer and Export Compliance
|
|
* provision in the documentation and/or other materials provided with the
|
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
|
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
|
|
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
|
|
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
|
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
|
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
|
|
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
|
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
|
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
|
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* software or system incorporating such software without first obtaining any
|
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* required license or other approval from the U. S. Department of Commerce or
|
|
* any other agency or department of the United States Government. In the
|
|
* event Licensee exports any such software from the United States or
|
|
* re-exports any such software from a foreign destination, Licensee shall
|
|
* ensure that the distribution and export/re-export of the software is in
|
|
* compliance with all laws, regulations, orders, or other restrictions of the
|
|
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
|
|
* software, or service, directly or indirectly, to any country for which the
|
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* United States government or any agency thereof requires an export license,
|
|
* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __EVXFACE_C__
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#include "acpi.h"
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#include "achware.h"
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#include "acnamesp.h"
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#include "acevents.h"
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#include "amlcode.h"
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#include "acinterp.h"
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#define _COMPONENT EVENT_HANDLING
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MODULE_NAME ("evxface")
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|
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/******************************************************************************
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*
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|
* FUNCTION: AcpiInstallFixedEventHandler
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*
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* PARAMETERS: Event - Event type to enable.
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* Handler - Pointer to the handler function for the
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* event
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|
* Context - Value passed to the handler on each GPE
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*
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* RETURN: Status
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|
*
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* DESCRIPTION: Saves the pointer to the handler function and then enables the
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* event.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiInstallFixedEventHandler (
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UINT32 Event,
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FIXED_EVENT_HANDLER Handler,
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void *Context)
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|
{
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ACPI_STATUS Status = AE_OK;
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|
|
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FUNCTION_TRACE ("AcpiInstallFixedEventHandler");
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|
|
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/* Sanity check the parameters. */
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if (Event >= NUM_FIXED_EVENTS)
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|
{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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AcpiCmAcquireMutex (ACPI_MTX_EVENTS);
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/* Don't allow two handlers. */
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if (NULL != AcpiGbl_FixedEventHandlers[Event].Handler)
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{
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Status = AE_EXIST;
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goto Cleanup;
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}
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/* Install the handler before enabling the event - just in case... */
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AcpiGbl_FixedEventHandlers[Event].Handler = Handler;
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AcpiGbl_FixedEventHandlers[Event].Context = Context;
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Status = AcpiEnableEvent(Event, ACPI_EVENT_FIXED);
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if (!ACPI_SUCCESS(Status))
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{
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DEBUG_PRINT (ACPI_WARN, ("Could not enable fixed event.\n"));
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/* Remove the handler */
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AcpiGbl_FixedEventHandlers[Event].Handler = NULL;
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AcpiGbl_FixedEventHandlers[Event].Context = NULL;
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Status = AE_ERROR;
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goto Cleanup;
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}
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DEBUG_PRINT (ACPI_INFO,
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|
("Enabled fixed event %X, Handler=%p\n", Event, Handler));
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|
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Cleanup:
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AcpiCmReleaseMutex (ACPI_MTX_EVENTS);
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return_ACPI_STATUS (Status);
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}
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|
|
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/******************************************************************************
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*
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* FUNCTION: AcpiRemoveFixedEventHandler
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*
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* PARAMETERS: Event - Event type to disable.
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* Handler - Address of the handler
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*
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* RETURN: Status
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*
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* DESCRIPTION: Disables the event and unregisters the event handler.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiRemoveFixedEventHandler (
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UINT32 Event,
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FIXED_EVENT_HANDLER Handler)
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|
{
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ACPI_STATUS Status = AE_OK;
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|
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FUNCTION_TRACE ("AcpiRemoveFixedEventHandler");
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|
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/* Sanity check the parameters. */
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if (Event >= NUM_FIXED_EVENTS)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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AcpiCmAcquireMutex (ACPI_MTX_EVENTS);
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/* Disable the event before removing the handler - just in case... */
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Status = AcpiDisableEvent(Event, ACPI_EVENT_FIXED);
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if (!ACPI_SUCCESS(Status))
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{
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DEBUG_PRINT (ACPI_WARN,
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("Could not write to fixed event enable register.\n"));
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Status = AE_ERROR;
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AcpiCmReleaseMutex (ACPI_MTX_EVENTS);
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return_ACPI_STATUS (Status);
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}
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/* Remove the handler */
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AcpiGbl_FixedEventHandlers[Event].Handler = NULL;
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AcpiGbl_FixedEventHandlers[Event].Context = NULL;
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DEBUG_PRINT (ACPI_INFO, ("Disabled fixed event %X.\n", Event));
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AcpiCmReleaseMutex (ACPI_MTX_EVENTS);
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return_ACPI_STATUS (Status);
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}
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|
|
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/******************************************************************************
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*
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* FUNCTION: AcpiInstallNotifyHandler
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*
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* PARAMETERS: Device - The device for which notifies will be handled
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* HandlerType - The type of handler:
|
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* ACPI_SYSTEM_NOTIFY: SystemHandler (00-7f)
|
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* ACPI_DEVICE_NOTIFY: DriverHandler (80-ff)
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* Handler - Address of the handler
|
|
* Context - Value passed to the handler on each GPE
|
|
*
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* RETURN: Status
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*
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* DESCRIPTION: Install a handler for notifies on an ACPI device
|
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*
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******************************************************************************/
|
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ACPI_STATUS
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AcpiInstallNotifyHandler (
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ACPI_HANDLE Device,
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UINT32 HandlerType,
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NOTIFY_HANDLER Handler,
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void *Context)
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{
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_OPERAND_OBJECT *NotifyObj;
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ACPI_NAMESPACE_NODE *DeviceNode;
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ACPI_STATUS Status = AE_OK;
|
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|
|
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FUNCTION_TRACE ("AcpiInstallNotifyHandler");
|
|
|
|
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/* Parameter validation */
|
|
|
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if ((!Handler) ||
|
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(HandlerType > ACPI_MAX_NOTIFY_HANDLER_TYPE))
|
|
{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
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/* Convert and validate the device handle */
|
|
|
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AcpiCmAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
|
|
DeviceNode = AcpiNsConvertHandleToEntry (Device);
|
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if (!DeviceNode)
|
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{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
|
|
/*
|
|
* Support for global notify handlers. These handlers are invoked for
|
|
* every notifiy of the type specifiec
|
|
*/
|
|
|
|
if (Device == ACPI_ROOT_OBJECT)
|
|
{
|
|
/*
|
|
* Make sure the handler is not already installed.
|
|
*/
|
|
|
|
if (((HandlerType == ACPI_SYSTEM_NOTIFY) &&
|
|
AcpiGbl_SysNotify.Handler) ||
|
|
((HandlerType == ACPI_DEVICE_NOTIFY) &&
|
|
AcpiGbl_DrvNotify.Handler))
|
|
{
|
|
Status = AE_EXIST;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
if (HandlerType == ACPI_SYSTEM_NOTIFY)
|
|
{
|
|
AcpiGbl_SysNotify.Node = DeviceNode;
|
|
AcpiGbl_SysNotify.Handler = Handler;
|
|
AcpiGbl_SysNotify.Context = Context;
|
|
}
|
|
|
|
else
|
|
{
|
|
AcpiGbl_DrvNotify.Node = DeviceNode;
|
|
AcpiGbl_DrvNotify.Handler = Handler;
|
|
AcpiGbl_DrvNotify.Context = Context;
|
|
}
|
|
|
|
|
|
/* Global notify handler installed */
|
|
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
|
|
/*
|
|
* These are the ONLY objects that can receive ACPI notifications
|
|
*/
|
|
|
|
if ((DeviceNode->Type != ACPI_TYPE_DEVICE) &&
|
|
(DeviceNode->Type != ACPI_TYPE_PROCESSOR) &&
|
|
(DeviceNode->Type != ACPI_TYPE_POWER) &&
|
|
(DeviceNode->Type != ACPI_TYPE_THERMAL))
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Check for an existing internal object */
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject ((ACPI_HANDLE) DeviceNode);
|
|
if (ObjDesc)
|
|
{
|
|
/*
|
|
* The object exists.
|
|
* Make sure the handler is not already installed.
|
|
*/
|
|
|
|
if (((HandlerType == ACPI_SYSTEM_NOTIFY) &&
|
|
ObjDesc->Device.SysHandler) ||
|
|
((HandlerType == ACPI_DEVICE_NOTIFY) &&
|
|
ObjDesc->Device.DrvHandler))
|
|
{
|
|
Status = AE_EXIST;
|
|
goto UnlockAndExit;
|
|
}
|
|
}
|
|
|
|
else
|
|
{
|
|
/* Create a new object */
|
|
|
|
ObjDesc = AcpiCmCreateInternalObject (DeviceNode->Type);
|
|
if (!ObjDesc)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Attach new object to the Node */
|
|
|
|
Status = AcpiNsAttachObject (Device, ObjDesc, (UINT8) DeviceNode->Type);
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* If we get here, we know that there is no handler installed
|
|
* so let's party
|
|
*/
|
|
NotifyObj = AcpiCmCreateInternalObject (INTERNAL_TYPE_NOTIFY);
|
|
if (!NotifyObj)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
NotifyObj->NotifyHandler.Node = DeviceNode;
|
|
NotifyObj->NotifyHandler.Handler = Handler;
|
|
NotifyObj->NotifyHandler.Context = Context;
|
|
|
|
|
|
if (HandlerType == ACPI_SYSTEM_NOTIFY)
|
|
{
|
|
ObjDesc->Device.SysHandler = NotifyObj;
|
|
}
|
|
|
|
else
|
|
{
|
|
ObjDesc->Device.DrvHandler = NotifyObj;
|
|
}
|
|
|
|
|
|
UnlockAndExit:
|
|
AcpiCmReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION: AcpiRemoveNotifyHandler
|
|
*
|
|
* PARAMETERS: Device - The device for which notifies will be handled
|
|
* HandlerType - The type of handler:
|
|
* ACPI_SYSTEM_NOTIFY: SystemHandler (00-7f)
|
|
* ACPI_DEVICE_NOTIFY: DriverHandler (80-ff)
|
|
* Handler - Address of the handler
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Remove a handler for notifies on an ACPI device
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiRemoveNotifyHandler (
|
|
ACPI_HANDLE Device,
|
|
UINT32 HandlerType,
|
|
NOTIFY_HANDLER Handler)
|
|
{
|
|
ACPI_OPERAND_OBJECT *NotifyObj;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_NAMESPACE_NODE *DeviceNode;
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
|
|
FUNCTION_TRACE ("AcpiRemoveNotifyHandler");
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if ((!Handler) ||
|
|
(HandlerType > ACPI_MAX_NOTIFY_HANDLER_TYPE))
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
AcpiCmAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
|
|
/* Convert and validate the device handle */
|
|
|
|
DeviceNode = AcpiNsConvertHandleToEntry (Device);
|
|
if (!DeviceNode)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/*
|
|
* These are the ONLY objects that can receive ACPI notifications
|
|
*/
|
|
|
|
if ((DeviceNode->Type != ACPI_TYPE_DEVICE) &&
|
|
(DeviceNode->Type != ACPI_TYPE_PROCESSOR) &&
|
|
(DeviceNode->Type != ACPI_TYPE_POWER) &&
|
|
(DeviceNode->Type != ACPI_TYPE_THERMAL))
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Check for an existing internal object */
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject ((ACPI_HANDLE) DeviceNode);
|
|
if (!ObjDesc)
|
|
{
|
|
Status = AE_NOT_EXIST;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/*
|
|
* The object exists.
|
|
*
|
|
* Make sure the handler is installed.
|
|
*/
|
|
|
|
if (HandlerType == ACPI_SYSTEM_NOTIFY)
|
|
{
|
|
NotifyObj = ObjDesc->Device.SysHandler;
|
|
}
|
|
else
|
|
{
|
|
NotifyObj = ObjDesc->Device.DrvHandler;
|
|
}
|
|
|
|
if ((!NotifyObj) ||
|
|
(NotifyObj->NotifyHandler.Handler != Handler))
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/*
|
|
* Now we can remove the handler
|
|
*/
|
|
if (HandlerType == ACPI_SYSTEM_NOTIFY)
|
|
{
|
|
ObjDesc->Device.SysHandler = NULL;
|
|
}
|
|
else
|
|
{
|
|
ObjDesc->Device.DrvHandler = NULL;
|
|
}
|
|
|
|
AcpiCmRemoveReference (NotifyObj);
|
|
|
|
UnlockAndExit:
|
|
AcpiCmReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiInstallGpeHandler
|
|
*
|
|
* PARAMETERS: GpeNumber - The GPE number. The numbering scheme is
|
|
* bank 0 first, then bank 1.
|
|
* Type - Whether this GPE should be treated as an
|
|
* edge- or level-triggered interrupt.
|
|
* Handler - Address of the handler
|
|
* Context - Value passed to the handler on each GPE
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Install a handler for a General Purpose Event.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiInstallGpeHandler (
|
|
UINT32 GpeNumber,
|
|
UINT32 Type,
|
|
GPE_HANDLER Handler,
|
|
void *Context)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
FUNCTION_TRACE ("AcpiInstallGpeHandler");
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!Handler || (GpeNumber > NUM_GPE))
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Ensure that we have a valid GPE number */
|
|
|
|
if (AcpiGbl_GpeValid[GpeNumber] == ACPI_GPE_INVALID)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
AcpiCmAcquireMutex (ACPI_MTX_EVENTS);
|
|
|
|
/* Make sure that there isn't a handler there already */
|
|
|
|
if (AcpiGbl_GpeInfo[GpeNumber].Handler)
|
|
{
|
|
Status = AE_EXIST;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Install the handler */
|
|
|
|
AcpiGbl_GpeInfo[GpeNumber].Handler = Handler;
|
|
AcpiGbl_GpeInfo[GpeNumber].Context = Context;
|
|
AcpiGbl_GpeInfo[GpeNumber].Type = (UINT8) Type;
|
|
|
|
/* Clear the GPE (of stale events), the enable it */
|
|
|
|
AcpiHwClearGpe (GpeNumber);
|
|
AcpiHwEnableGpe (GpeNumber);
|
|
|
|
Cleanup:
|
|
AcpiCmReleaseMutex (ACPI_MTX_EVENTS);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiRemoveGpeHandler
|
|
*
|
|
* PARAMETERS: GpeNumber - The event to remove a handler
|
|
* Handler - Address of the handler
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Remove a handler for a General Purpose AcpiEvent.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiRemoveGpeHandler (
|
|
UINT32 GpeNumber,
|
|
GPE_HANDLER Handler)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
|
|
FUNCTION_TRACE ("AcpiRemoveGpeHandler");
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!Handler || (GpeNumber > NUM_GPE))
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Ensure that we have a valid GPE number */
|
|
|
|
if (AcpiGbl_GpeValid[GpeNumber] == ACPI_GPE_INVALID)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Disable the GPE before removing the handler */
|
|
|
|
AcpiHwDisableGpe (GpeNumber);
|
|
|
|
AcpiCmAcquireMutex (ACPI_MTX_EVENTS);
|
|
|
|
/* Make sure that the installed handler is the same */
|
|
|
|
if (AcpiGbl_GpeInfo[GpeNumber].Handler != Handler)
|
|
{
|
|
AcpiHwEnableGpe (GpeNumber);
|
|
Status = AE_BAD_PARAMETER;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Remove the handler */
|
|
|
|
AcpiGbl_GpeInfo[GpeNumber].Handler = NULL;
|
|
AcpiGbl_GpeInfo[GpeNumber].Context = NULL;
|
|
|
|
Cleanup:
|
|
AcpiCmReleaseMutex (ACPI_MTX_EVENTS);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiAcquireGlobalLock
|
|
*
|
|
* PARAMETERS: Timeout - How long the caller is willing to wait
|
|
* OutHandle - A handle to the lock if acquired
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Acquire the ACPI Global Lock
|
|
*
|
|
******************************************************************************/
|
|
ACPI_STATUS
|
|
AcpiAcquireGlobalLock (
|
|
void)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
AcpiAmlEnterInterpreter ();
|
|
|
|
/*
|
|
* TBD: [Restructure] add timeout param to internal interface, and
|
|
* perhaps INTERPRETER_LOCKED
|
|
*/
|
|
|
|
Status = AcpiEvAcquireGlobalLock ();
|
|
AcpiAmlExitInterpreter ();
|
|
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiReleaseGlobalLock
|
|
*
|
|
* PARAMETERS: Handle - Returned from AcpiAcquireGlobalLock
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Release the ACPI Global Lock
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiReleaseGlobalLock (
|
|
void)
|
|
{
|
|
AcpiEvReleaseGlobalLock ();
|
|
return (AE_OK);
|
|
}
|
|
|
|
|