9560b6dea8
- 99% of the code is Intel's ACPICA. The license is compliant with BSD and GNU and virtually all systems that use ACPI use this code, For instance it is part of the Linux kernel. - The only minix specific files are acpi.c osminixxf.c platform/acminix.h and include/minix/acpi.h - At the moment the driver does not register interrupt hooks which I believe is mainly for handling PnP, events like "battery level is low" and power management. Should not be difficult to add it if need be. - The interface to the outside world is virtually non-existent except a trivial message based service for PCI driver to query which device is connected to what IRQ line. This will evolve as more components start using this driver. VM, Scheduler and IOMMU are the possible users right now. - because of dependency on a native 64bit (long long, part of c99) it is compiled only with a gnu-like compilers which in case of Minix includes gcc llvm-gcc and clang
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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|
*/
|
|
if ((LocalGpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) ==
|
|
ACPI_GPE_DISPATCH_METHOD)
|
|
{
|
|
/* Allocate the evaluation information block */
|
|
|
|
Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO));
|
|
if (!Info)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* 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);
|
|
}
|
|
|