753 lines
24 KiB
C
753 lines
24 KiB
C
/******************************************************************************
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*
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* Module Name: evgpe - General Purpose Event handling and dispatch
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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 - 2010, Intel Corp.
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* All rights 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.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* 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,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* 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,
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* 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
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* 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,
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* 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,
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* 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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#include "acpi.h"
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#include "accommon.h"
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#include "acevents.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_EVENTS
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ACPI_MODULE_NAME ("evgpe")
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/* Local prototypes */
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static void ACPI_SYSTEM_XFACE
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AcpiEvAsynchExecuteGpeMethod (
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void *Context);
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static void ACPI_SYSTEM_XFACE
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AcpiEvAsynchEnableGpe (
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void *Context);
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvUpdateGpeEnableMask
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*
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* PARAMETERS: GpeEventInfo - GPE to update
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*
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* RETURN: Status
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*
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* DESCRIPTION: Updates GPE register enable mask based upon whether there are
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* runtime references to this GPE
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvUpdateGpeEnableMask (
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ACPI_GPE_EVENT_INFO *GpeEventInfo)
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{
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ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
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UINT32 RegisterBit;
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ACPI_FUNCTION_TRACE (EvUpdateGpeEnableMask);
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GpeRegisterInfo = GpeEventInfo->RegisterInfo;
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if (!GpeRegisterInfo)
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{
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return_ACPI_STATUS (AE_NOT_EXIST);
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}
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RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo, GpeRegisterInfo);
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/* Clear the run bit up front */
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ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForRun, RegisterBit);
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/* Set the mask bit only if there are references to this GPE */
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if (GpeEventInfo->RuntimeCount)
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{
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ACPI_SET_BIT (GpeRegisterInfo->EnableForRun, (UINT8) RegisterBit);
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}
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvEnableGpe
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*
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* PARAMETERS: GpeEventInfo - GPE to enable
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*
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* RETURN: Status
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*
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* DESCRIPTION: Clear a GPE of stale events and enable it.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvEnableGpe (
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ACPI_GPE_EVENT_INFO *GpeEventInfo)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (EvEnableGpe);
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/*
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* We will only allow a GPE to be enabled if it has either an
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* associated method (_Lxx/_Exx) or a handler. Otherwise, the
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* GPE will be immediately disabled by AcpiEvGpeDispatch the
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* first time it fires.
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*/
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if (!(GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK))
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{
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return_ACPI_STATUS (AE_NO_HANDLER);
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}
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/* Clear the GPE (of stale events) */
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Status = AcpiHwClearGpe (GpeEventInfo);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Enable the requested GPE */
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Status = AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_ENABLE);
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvLowGetGpeInfo
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*
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* PARAMETERS: GpeNumber - Raw GPE number
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* GpeBlock - A GPE info block
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*
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* RETURN: A GPE EventInfo struct. NULL if not a valid GPE (The GpeNumber
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* is not within the specified GPE block)
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*
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* DESCRIPTION: Returns the EventInfo struct associated with this GPE. This is
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* the low-level implementation of EvGetGpeEventInfo.
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*
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******************************************************************************/
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ACPI_GPE_EVENT_INFO *
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AcpiEvLowGetGpeInfo (
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UINT32 GpeNumber,
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ACPI_GPE_BLOCK_INFO *GpeBlock)
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{
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UINT32 GpeIndex;
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/*
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* Validate that the GpeNumber is within the specified GpeBlock.
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* (Two steps)
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*/
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if (!GpeBlock ||
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(GpeNumber < GpeBlock->BlockBaseNumber))
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{
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return (NULL);
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}
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GpeIndex = GpeNumber - GpeBlock->BlockBaseNumber;
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if (GpeIndex >= GpeBlock->GpeCount)
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{
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return (NULL);
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}
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return (&GpeBlock->EventInfo[GpeIndex]);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvGetGpeEventInfo
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*
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* PARAMETERS: GpeDevice - Device node. NULL for GPE0/GPE1
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* GpeNumber - Raw GPE number
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*
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* RETURN: A GPE EventInfo struct. NULL if not a valid GPE
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*
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* DESCRIPTION: Returns the EventInfo struct associated with this GPE.
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* Validates the GpeBlock and the GpeNumber
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*
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* Should be called only when the GPE lists are semaphore locked
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* and not subject to change.
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*
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******************************************************************************/
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ACPI_GPE_EVENT_INFO *
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AcpiEvGetGpeEventInfo (
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ACPI_HANDLE GpeDevice,
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UINT32 GpeNumber)
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{
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_GPE_EVENT_INFO *GpeInfo;
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UINT32 i;
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ACPI_FUNCTION_ENTRY ();
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/* A NULL GpeDevice means use the FADT-defined GPE block(s) */
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if (!GpeDevice)
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{
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/* Examine GPE Block 0 and 1 (These blocks are permanent) */
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for (i = 0; i < ACPI_MAX_GPE_BLOCKS; i++)
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{
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GpeInfo = AcpiEvLowGetGpeInfo (GpeNumber,
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AcpiGbl_GpeFadtBlocks[i]);
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if (GpeInfo)
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{
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return (GpeInfo);
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}
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}
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/* The GpeNumber was not in the range of either FADT GPE block */
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return (NULL);
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}
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/* A Non-NULL GpeDevice means this is a GPE Block Device */
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ObjDesc = AcpiNsGetAttachedObject ((ACPI_NAMESPACE_NODE *) GpeDevice);
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if (!ObjDesc ||
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!ObjDesc->Device.GpeBlock)
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{
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return (NULL);
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}
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return (AcpiEvLowGetGpeInfo (GpeNumber, ObjDesc->Device.GpeBlock));
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvGpeDetect
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*
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* PARAMETERS: GpeXruptList - Interrupt block for this interrupt.
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* Can have multiple GPE blocks attached.
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*
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* RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
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*
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* DESCRIPTION: Detect if any GP events have occurred. This function is
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* executed at interrupt level.
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*
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******************************************************************************/
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UINT32
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AcpiEvGpeDetect (
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ACPI_GPE_XRUPT_INFO *GpeXruptList)
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{
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ACPI_STATUS Status;
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ACPI_GPE_BLOCK_INFO *GpeBlock;
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ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
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UINT32 IntStatus = ACPI_INTERRUPT_NOT_HANDLED;
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UINT8 EnabledStatusByte;
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UINT32 StatusReg;
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UINT32 EnableReg;
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ACPI_CPU_FLAGS Flags;
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UINT32 i;
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UINT32 j;
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ACPI_FUNCTION_NAME (EvGpeDetect);
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/* Check for the case where there are no GPEs */
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if (!GpeXruptList)
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{
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return (IntStatus);
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}
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/*
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* We need to obtain the GPE lock for both the data structs and registers
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* Note: Not necessary to obtain the hardware lock, since the GPE
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* registers are owned by the GpeLock.
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*/
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Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
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/* Examine all GPE blocks attached to this interrupt level */
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GpeBlock = GpeXruptList->GpeBlockListHead;
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while (GpeBlock)
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{
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/*
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* Read all of the 8-bit GPE status and enable registers in this GPE
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* block, saving all of them. Find all currently active GP events.
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*/
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for (i = 0; i < GpeBlock->RegisterCount; i++)
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{
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/* Get the next status/enable pair */
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GpeRegisterInfo = &GpeBlock->RegisterInfo[i];
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/* Read the Status Register */
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Status = AcpiHwRead (&StatusReg, &GpeRegisterInfo->StatusAddress);
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if (ACPI_FAILURE (Status))
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{
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goto UnlockAndExit;
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}
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/* Read the Enable Register */
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Status = AcpiHwRead (&EnableReg, &GpeRegisterInfo->EnableAddress);
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if (ACPI_FAILURE (Status))
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{
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goto UnlockAndExit;
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}
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ACPI_DEBUG_PRINT ((ACPI_DB_INTERRUPTS,
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"Read GPE Register at GPE%X: Status=%02X, Enable=%02X\n",
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GpeRegisterInfo->BaseGpeNumber, StatusReg, EnableReg));
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/* Check if there is anything active at all in this register */
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EnabledStatusByte = (UINT8) (StatusReg & EnableReg);
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if (!EnabledStatusByte)
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{
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/* No active GPEs in this register, move on */
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continue;
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}
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/* Now look at the individual GPEs in this byte register */
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for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
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{
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/* Examine one GPE bit */
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if (EnabledStatusByte & (1 << j))
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{
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/*
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* Found an active GPE. Dispatch the event to a handler
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* or method.
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*/
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IntStatus |= AcpiEvGpeDispatch (
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&GpeBlock->EventInfo[((ACPI_SIZE) i *
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ACPI_GPE_REGISTER_WIDTH) + j],
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j + GpeRegisterInfo->BaseGpeNumber);
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}
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}
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}
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GpeBlock = GpeBlock->Next;
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}
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UnlockAndExit:
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AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
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return (IntStatus);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvAsynchExecuteGpeMethod
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*
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* PARAMETERS: Context (GpeEventInfo) - Info for this GPE
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*
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* RETURN: None
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*
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* DESCRIPTION: Perform the actual execution of a GPE control method. This
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* function is called from an invocation of AcpiOsExecute and
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* therefore does NOT execute at interrupt level - so that
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* the control method itself is not executed in the context of
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* an interrupt handler.
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*
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******************************************************************************/
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static void ACPI_SYSTEM_XFACE
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AcpiEvAsynchExecuteGpeMethod (
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void *Context)
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{
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ACPI_GPE_EVENT_INFO *GpeEventInfo = Context;
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ACPI_STATUS Status;
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ACPI_GPE_EVENT_INFO *LocalGpeEventInfo;
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ACPI_EVALUATE_INFO *Info;
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ACPI_FUNCTION_TRACE (EvAsynchExecuteGpeMethod);
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/* Allocate a local GPE block */
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LocalGpeEventInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_EVENT_INFO));
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if (!LocalGpeEventInfo)
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{
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ACPI_EXCEPTION ((AE_INFO, AE_NO_MEMORY,
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"while handling a GPE"));
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return_VOID;
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}
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Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
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if (ACPI_FAILURE (Status))
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{
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return_VOID;
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}
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/* Must revalidate the GpeNumber/GpeBlock */
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if (!AcpiEvValidGpeEvent (GpeEventInfo))
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{
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Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
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return_VOID;
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}
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/*
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* Take a snapshot of the GPE info for this level - we copy the info to
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* prevent a race condition with RemoveHandler/RemoveBlock.
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*/
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ACPI_MEMCPY (LocalGpeEventInfo, GpeEventInfo,
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sizeof (ACPI_GPE_EVENT_INFO));
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Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
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if (ACPI_FAILURE (Status))
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{
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return_VOID;
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}
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/*
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* Must check for control method type dispatch one more time to avoid a
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* race with EvGpeInstallHandler
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*/
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if ((LocalGpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) ==
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ACPI_GPE_DISPATCH_METHOD)
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{
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/* Allocate the evaluation information block */
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Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO));
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if (!Info)
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{
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Status = AE_NO_MEMORY;
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}
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else
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{
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/*
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* Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the _Lxx/_Exx
|
|
* control method that corresponds to this GPE
|
|
*/
|
|
Info->PrefixNode = LocalGpeEventInfo->Dispatch.MethodNode;
|
|
Info->Flags = ACPI_IGNORE_RETURN_VALUE;
|
|
|
|
Status = AcpiNsEvaluate (Info);
|
|
ACPI_FREE (Info);
|
|
}
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"while evaluating GPE method [%4.4s]",
|
|
AcpiUtGetNodeName (LocalGpeEventInfo->Dispatch.MethodNode)));
|
|
}
|
|
}
|
|
|
|
/* Defer enabling of GPE until all notify handlers are done */
|
|
|
|
Status = AcpiOsExecute (OSL_NOTIFY_HANDLER,
|
|
AcpiEvAsynchEnableGpe, LocalGpeEventInfo);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_FREE (LocalGpeEventInfo);
|
|
}
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvAsynchEnableGpe
|
|
*
|
|
* PARAMETERS: Context (GpeEventInfo) - Info for this GPE
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Asynchronous clear/enable for GPE. This allows the GPE to
|
|
* complete (i.e., finish execution of Notify)
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void ACPI_SYSTEM_XFACE
|
|
AcpiEvAsynchEnableGpe (
|
|
void *Context)
|
|
{
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo = Context;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
if ((GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
|
|
ACPI_GPE_LEVEL_TRIGGERED)
|
|
{
|
|
/*
|
|
* GPE is level-triggered, we clear the GPE status bit after handling
|
|
* the event.
|
|
*/
|
|
Status = AcpiHwClearGpe (GpeEventInfo);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto Exit;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Enable this GPE, conditionally. This means that the GPE will only be
|
|
* physically enabled if the EnableForRun bit is set in the EventInfo
|
|
*/
|
|
(void) AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_CONDITIONAL_ENABLE);
|
|
|
|
Exit:
|
|
ACPI_FREE (GpeEventInfo);
|
|
return;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvGpeDispatch
|
|
*
|
|
* PARAMETERS: GpeEventInfo - Info for this GPE
|
|
* GpeNumber - Number relative to the parent GPE block
|
|
*
|
|
* RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
|
|
*
|
|
* DESCRIPTION: Dispatch a General Purpose Event to either a function (e.g. EC)
|
|
* or method (e.g. _Lxx/_Exx) handler.
|
|
*
|
|
* This function executes at interrupt level.
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT32
|
|
AcpiEvGpeDispatch (
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo,
|
|
UINT32 GpeNumber)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (EvGpeDispatch);
|
|
|
|
|
|
AcpiGpeCount++;
|
|
|
|
/*
|
|
* If edge-triggered, clear the GPE status bit now. Note that
|
|
* level-triggered events are cleared after the GPE is serviced.
|
|
*/
|
|
if ((GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
|
|
ACPI_GPE_EDGE_TRIGGERED)
|
|
{
|
|
Status = AcpiHwClearGpe (GpeEventInfo);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"Unable to clear GPE[0x%2X]", GpeNumber));
|
|
return_UINT32 (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Dispatch the GPE to either an installed handler, or the control method
|
|
* associated with this GPE (_Lxx or _Exx). If a handler exists, we invoke
|
|
* it and do not attempt to run the method. If there is neither a handler
|
|
* nor a method, we disable this GPE to prevent further such pointless
|
|
* events from firing.
|
|
*/
|
|
switch (GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK)
|
|
{
|
|
case ACPI_GPE_DISPATCH_HANDLER:
|
|
|
|
/*
|
|
* Invoke the installed handler (at interrupt level)
|
|
* Ignore return status for now.
|
|
* TBD: leave GPE disabled on error?
|
|
*/
|
|
(void) GpeEventInfo->Dispatch.Handler->Address (
|
|
GpeEventInfo->Dispatch.Handler->Context);
|
|
|
|
/* It is now safe to clear level-triggered events. */
|
|
|
|
if ((GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
|
|
ACPI_GPE_LEVEL_TRIGGERED)
|
|
{
|
|
Status = AcpiHwClearGpe (GpeEventInfo);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"Unable to clear GPE[0x%2X]", GpeNumber));
|
|
return_UINT32 (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ACPI_GPE_DISPATCH_METHOD:
|
|
|
|
/*
|
|
* Disable the GPE, so it doesn't keep firing before the method has a
|
|
* chance to run (it runs asynchronously with interrupts enabled).
|
|
*/
|
|
Status = AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_DISABLE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"Unable to disable GPE[0x%2X]", GpeNumber));
|
|
return_UINT32 (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
|
|
/*
|
|
* Execute the method associated with the GPE
|
|
* NOTE: Level-triggered GPEs are cleared after the method completes.
|
|
*/
|
|
Status = AcpiOsExecute (OSL_GPE_HANDLER,
|
|
AcpiEvAsynchExecuteGpeMethod, GpeEventInfo);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"Unable to queue handler for GPE[0x%2X] - event disabled",
|
|
GpeNumber));
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
/*
|
|
* No handler or method to run!
|
|
* 03/2010: This case should no longer be possible. We will not allow
|
|
* a GPE to be enabled if it has no handler or method.
|
|
*/
|
|
ACPI_ERROR ((AE_INFO,
|
|
"No handler or method for GPE[0x%2X], disabling event",
|
|
GpeNumber));
|
|
|
|
/*
|
|
* Disable the GPE. The GPE will remain disabled until a handler
|
|
* is installed or ACPICA is restarted.
|
|
*/
|
|
Status = AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_DISABLE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"Unable to disable GPE[0x%2X]", GpeNumber));
|
|
return_UINT32 (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return_UINT32 (ACPI_INTERRUPT_HANDLED);
|
|
}
|
|
|