265ed03ff5
zone code. The GPE handler method (i.e. _L00) generates various Notify events that need to be run to completion before the GPE is re-enabled. In ACPI-CA, we queue an asynch callback at the same priority as a Notify so that it will only run after all Notify handlers have completed. The callback re-enables the GPE afterwards. We also changed the priority of Notifies to be the same as GPEs, given the possibility that another GPE could arrive before the Notifies have completed and we don't want it to get queued ahead of the rest. The ACPI-CA change was submitted by Alexey Starikovskiy (SUSE) and will appear in a later release. Special thanks to him for helping track this bug down. MFC after: 1 week Tested by: jhb, Yousif Hassan <yousif / alumni.jmu.edu>
867 lines
27 KiB
C
867 lines
27 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: evgpe - General Purpose Event handling and dispatch
|
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* $Revision: 1.68 $
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|
*
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|
*****************************************************************************/
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|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2007, Intel Corp.
|
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* All rights reserved.
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*
|
|
* 2. License
|
|
*
|
|
* 2.1. This is your license from Intel Corp. under its intellectual property
|
|
* 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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* 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
|
|
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
|
|
* base code distributed originally by Intel ("Original Intel Code") to copy,
|
|
* make derivatives, distribute, use and display any portion of the Covered
|
|
* Code in any form, with the right to sublicense such rights; and
|
|
*
|
|
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
|
|
* license (with the right to sublicense), under only those claims of Intel
|
|
* patents that are infringed by the Original Intel Code, to make, use, sell,
|
|
* offer to sell, and import the Covered Code and derivative works thereof
|
|
* solely to the minimum extent necessary to exercise the above copyright
|
|
* license, and in no event shall the patent license extend to any additions
|
|
* to or modifications of the Original Intel Code. No other license or right
|
|
* is granted directly or by implication, estoppel or otherwise;
|
|
*
|
|
* The above copyright and patent license is granted only if the following
|
|
* conditions are met:
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*
|
|
* 3. Conditions
|
|
*
|
|
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
|
|
* Redistribution of source code of any substantial portion 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.
|
|
*
|
|
* 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.
|
|
*
|
|
* 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
|
|
* 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
|
|
* other dealings in products derived from or relating to the Covered Code
|
|
* without prior written authorization from Intel.
|
|
*
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|
* 4. Disclaimer and Export Compliance
|
|
*
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|
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
|
|
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
|
|
* 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
|
|
* PARTICULAR PURPOSE.
|
|
*
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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
|
|
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
|
|
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
|
|
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
|
|
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
|
|
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
|
|
* LIMITED REMEDY.
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|
*
|
|
* 4.3. Licensee shall not export, either directly or indirectly, any of this
|
|
* software or system incorporating such software without first obtaining any
|
|
* 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
|
|
* any of its subsidiaries will export/re-export any technical data, process,
|
|
* software, or service, directly or indirectly, to any country for which the
|
|
* 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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#include <contrib/dev/acpica/acpi.h>
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#include <contrib/dev/acpica/acevents.h>
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#include <contrib/dev/acpica/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
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AcpiEvAsynchEnableGpe (
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void *Context);
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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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/*******************************************************************************
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*
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* FUNCTION: AcpiEvSetGpeType
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*
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* PARAMETERS: GpeEventInfo - GPE to set
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* Type - New type
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*
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* RETURN: Status
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*
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* DESCRIPTION: Sets the new type for the GPE (wake, run, or wake/run)
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvSetGpeType (
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ACPI_GPE_EVENT_INFO *GpeEventInfo,
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UINT8 Type)
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{
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ACPI_STATUS Status;
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|
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ACPI_FUNCTION_TRACE (EvSetGpeType);
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|
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/* Validate type and update register enable masks */
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switch (Type)
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{
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case ACPI_GPE_TYPE_WAKE:
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case ACPI_GPE_TYPE_RUNTIME:
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case ACPI_GPE_TYPE_WAKE_RUN:
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break;
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default:
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/* Disable the GPE if currently enabled */
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Status = AcpiEvDisableGpe (GpeEventInfo);
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/* Type was validated above */
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GpeEventInfo->Flags &= ~ACPI_GPE_TYPE_MASK; /* Clear type bits */
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GpeEventInfo->Flags |= Type; /* Insert type */
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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: AcpiEvUpdateGpeEnableMasks
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*
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* PARAMETERS: GpeEventInfo - GPE to update
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* Type - What to do: ACPI_GPE_DISABLE or
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* ACPI_GPE_ENABLE
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*
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* RETURN: Status
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*
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|
* DESCRIPTION: Updates GPE register enable masks based on the GPE type
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*
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|
******************************************************************************/
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ACPI_STATUS
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AcpiEvUpdateGpeEnableMasks (
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ACPI_GPE_EVENT_INFO *GpeEventInfo,
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UINT8 Type)
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{
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ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
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UINT8 RegisterBit;
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ACPI_FUNCTION_TRACE (EvUpdateGpeEnableMasks);
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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 = (UINT8)
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(1 << (GpeEventInfo->GpeNumber - GpeRegisterInfo->BaseGpeNumber));
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/* 1) Disable case. Simply clear all enable bits */
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if (Type == ACPI_GPE_DISABLE)
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{
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ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForWake, RegisterBit);
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ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForRun, RegisterBit);
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return_ACPI_STATUS (AE_OK);
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}
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/* 2) Enable case. Set/Clear the appropriate enable bits */
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switch (GpeEventInfo->Flags & ACPI_GPE_TYPE_MASK)
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{
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case ACPI_GPE_TYPE_WAKE:
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ACPI_SET_BIT (GpeRegisterInfo->EnableForWake, RegisterBit);
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ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForRun, RegisterBit);
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break;
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case ACPI_GPE_TYPE_RUNTIME:
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ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForWake, RegisterBit);
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ACPI_SET_BIT (GpeRegisterInfo->EnableForRun, RegisterBit);
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break;
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case ACPI_GPE_TYPE_WAKE_RUN:
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ACPI_SET_BIT (GpeRegisterInfo->EnableForWake, RegisterBit);
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ACPI_SET_BIT (GpeRegisterInfo->EnableForRun, RegisterBit);
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break;
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default:
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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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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* WriteToHardware - Enable now, or just mark data structs
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* (WAKE GPEs should be deferred)
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*
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* RETURN: Status
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*
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* DESCRIPTION: Enable a GPE based on the GPE type
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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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BOOLEAN WriteToHardware)
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{
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ACPI_STATUS Status;
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|
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ACPI_FUNCTION_TRACE (EvEnableGpe);
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|
|
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/* Make sure HW enable masks are updated */
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Status = AcpiEvUpdateGpeEnableMasks (GpeEventInfo, ACPI_GPE_ENABLE);
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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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|
|
/* Mark wake-enabled or HW enable, or both */
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|
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switch (GpeEventInfo->Flags & ACPI_GPE_TYPE_MASK)
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{
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case ACPI_GPE_TYPE_WAKE:
|
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ACPI_SET_BIT (GpeEventInfo->Flags, ACPI_GPE_WAKE_ENABLED);
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break;
|
|
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case ACPI_GPE_TYPE_WAKE_RUN:
|
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ACPI_SET_BIT (GpeEventInfo->Flags, ACPI_GPE_WAKE_ENABLED);
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/*lint -fallthrough */
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case ACPI_GPE_TYPE_RUNTIME:
|
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|
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ACPI_SET_BIT (GpeEventInfo->Flags, ACPI_GPE_RUN_ENABLED);
|
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|
|
if (WriteToHardware)
|
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{
|
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/* Clear the GPE (of stale events), then enable it */
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|
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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);
|
|
}
|
|
|
|
/* Enable the requested runtime GPE */
|
|
|
|
Status = AcpiHwWriteGpeEnableReg (GpeEventInfo);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvDisableGpe
|
|
*
|
|
* PARAMETERS: GpeEventInfo - GPE to disable
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*
|
|
* RETURN: Status
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*
|
|
* DESCRIPTION: Disable a GPE based on the GPE type
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|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
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AcpiEvDisableGpe (
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ACPI_GPE_EVENT_INFO *GpeEventInfo)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (EvDisableGpe);
|
|
|
|
|
|
if (!(GpeEventInfo->Flags & ACPI_GPE_ENABLE_MASK))
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Make sure HW enable masks are updated */
|
|
|
|
Status = AcpiEvUpdateGpeEnableMasks (GpeEventInfo, ACPI_GPE_DISABLE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Mark wake-disabled or HW disable, or both */
|
|
|
|
switch (GpeEventInfo->Flags & ACPI_GPE_TYPE_MASK)
|
|
{
|
|
case ACPI_GPE_TYPE_WAKE:
|
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ACPI_CLEAR_BIT (GpeEventInfo->Flags, ACPI_GPE_WAKE_ENABLED);
|
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break;
|
|
|
|
case ACPI_GPE_TYPE_WAKE_RUN:
|
|
ACPI_CLEAR_BIT (GpeEventInfo->Flags, ACPI_GPE_WAKE_ENABLED);
|
|
|
|
/*lint -fallthrough */
|
|
|
|
case ACPI_GPE_TYPE_RUNTIME:
|
|
|
|
/* Disable the requested runtime GPE */
|
|
|
|
ACPI_CLEAR_BIT (GpeEventInfo->Flags, ACPI_GPE_RUN_ENABLED);
|
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Status = AcpiHwWriteGpeEnableReg (GpeEventInfo);
|
|
break;
|
|
|
|
default:
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvGetGpeEventInfo
|
|
*
|
|
* PARAMETERS: GpeDevice - Device node. NULL for GPE0/GPE1
|
|
* GpeNumber - Raw GPE number
|
|
*
|
|
* RETURN: A GPE EventInfo struct. NULL if not a valid GPE
|
|
*
|
|
* DESCRIPTION: Returns the EventInfo struct associated with this GPE.
|
|
* Validates the GpeBlock and the GpeNumber
|
|
*
|
|
* Should be called only when the GPE lists are semaphore locked
|
|
* and not subject to change.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_GPE_EVENT_INFO *
|
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AcpiEvGetGpeEventInfo (
|
|
ACPI_HANDLE GpeDevice,
|
|
UINT32 GpeNumber)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_GPE_BLOCK_INFO *GpeBlock;
|
|
ACPI_NATIVE_UINT i;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/* A NULL GpeBlock means use the FADT-defined GPE block(s) */
|
|
|
|
if (!GpeDevice)
|
|
{
|
|
/* Examine GPE Block 0 and 1 (These blocks are permanent) */
|
|
|
|
for (i = 0; i < ACPI_MAX_GPE_BLOCKS; i++)
|
|
{
|
|
GpeBlock = AcpiGbl_GpeFadtBlocks[i];
|
|
if (GpeBlock)
|
|
{
|
|
if ((GpeNumber >= GpeBlock->BlockBaseNumber) &&
|
|
(GpeNumber < GpeBlock->BlockBaseNumber +
|
|
(GpeBlock->RegisterCount * 8)))
|
|
{
|
|
return (&GpeBlock->EventInfo[GpeNumber -
|
|
GpeBlock->BlockBaseNumber]);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* The GpeNumber was not in the range of either FADT GPE block */
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
/* A Non-NULL GpeDevice means this is a GPE Block Device */
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject ((ACPI_NAMESPACE_NODE *) GpeDevice);
|
|
if (!ObjDesc ||
|
|
!ObjDesc->Device.GpeBlock)
|
|
{
|
|
return (NULL);
|
|
}
|
|
|
|
GpeBlock = ObjDesc->Device.GpeBlock;
|
|
|
|
if ((GpeNumber >= GpeBlock->BlockBaseNumber) &&
|
|
(GpeNumber < GpeBlock->BlockBaseNumber + (GpeBlock->RegisterCount * 8)))
|
|
{
|
|
return (&GpeBlock->EventInfo[GpeNumber - GpeBlock->BlockBaseNumber]);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvGpeDetect
|
|
*
|
|
* PARAMETERS: GpeXruptList - Interrupt block for this interrupt.
|
|
* Can have multiple GPE blocks attached.
|
|
*
|
|
* RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
|
|
*
|
|
* DESCRIPTION: Detect if any GP events have occurred. This function is
|
|
* executed at interrupt level.
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT32
|
|
AcpiEvGpeDetect (
|
|
ACPI_GPE_XRUPT_INFO *GpeXruptList)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_GPE_BLOCK_INFO *GpeBlock;
|
|
ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
|
|
UINT32 IntStatus = ACPI_INTERRUPT_NOT_HANDLED;
|
|
UINT8 EnabledStatusByte;
|
|
UINT32 StatusReg;
|
|
UINT32 EnableReg;
|
|
ACPI_CPU_FLAGS Flags;
|
|
ACPI_NATIVE_UINT i;
|
|
ACPI_NATIVE_UINT j;
|
|
|
|
|
|
ACPI_FUNCTION_NAME (EvGpeDetect);
|
|
|
|
/* Check for the case where there are no GPEs */
|
|
|
|
if (!GpeXruptList)
|
|
{
|
|
return (IntStatus);
|
|
}
|
|
|
|
/*
|
|
* We need to obtain the GPE lock for both the data structs and registers
|
|
* Note: Not necessary to obtain the hardware lock, since the GPE registers
|
|
* are owned by the GpeLock.
|
|
*/
|
|
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
|
|
|
|
/* Examine all GPE blocks attached to this interrupt level */
|
|
|
|
GpeBlock = GpeXruptList->GpeBlockListHead;
|
|
while (GpeBlock)
|
|
{
|
|
/*
|
|
* Read all of the 8-bit GPE status and enable registers
|
|
* in this GPE block, saving all of them.
|
|
* Find all currently active GP events.
|
|
*/
|
|
for (i = 0; i < GpeBlock->RegisterCount; i++)
|
|
{
|
|
/* Get the next status/enable pair */
|
|
|
|
GpeRegisterInfo = &GpeBlock->RegisterInfo[i];
|
|
|
|
/* Read the Status Register */
|
|
|
|
Status = AcpiHwLowLevelRead (ACPI_GPE_REGISTER_WIDTH, &StatusReg,
|
|
&GpeRegisterInfo->StatusAddress);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Read the Enable Register */
|
|
|
|
Status = AcpiHwLowLevelRead (ACPI_GPE_REGISTER_WIDTH, &EnableReg,
|
|
&GpeRegisterInfo->EnableAddress);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INTERRUPTS,
|
|
"Read GPE Register at GPE%X: Status=%02X, Enable=%02X\n",
|
|
GpeRegisterInfo->BaseGpeNumber, StatusReg, EnableReg));
|
|
|
|
/* Check if there is anything active at all in this register */
|
|
|
|
EnabledStatusByte = (UINT8) (StatusReg & EnableReg);
|
|
if (!EnabledStatusByte)
|
|
{
|
|
/* No active GPEs in this register, move on */
|
|
|
|
continue;
|
|
}
|
|
|
|
/* Now look at the individual GPEs in this byte register */
|
|
|
|
for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
|
|
{
|
|
/* Examine one GPE bit */
|
|
|
|
if (EnabledStatusByte & (1 << j))
|
|
{
|
|
/*
|
|
* Found an active GPE. Dispatch the event to a handler
|
|
* or method.
|
|
*/
|
|
IntStatus |= AcpiEvGpeDispatch (
|
|
&GpeBlock->EventInfo[(i * ACPI_GPE_REGISTER_WIDTH) + j],
|
|
(UINT32) j + GpeRegisterInfo->BaseGpeNumber);
|
|
}
|
|
}
|
|
}
|
|
|
|
GpeBlock = GpeBlock->Next;
|
|
}
|
|
|
|
UnlockAndExit:
|
|
|
|
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
|
|
return (IntStatus);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvAsynchExecuteGpeMethod
|
|
*
|
|
* PARAMETERS: Context (GpeEventInfo) - Info for this GPE
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Perform the actual execution of a GPE control method. This
|
|
* function is called from an invocation of AcpiOsExecute and
|
|
* therefore does NOT execute at interrupt level - so that
|
|
* the control method itself is not executed in the context of
|
|
* an interrupt handler.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void ACPI_SYSTEM_XFACE
|
|
AcpiEvAsynchExecuteGpeMethod (
|
|
void *Context)
|
|
{
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo = (void *) Context;
|
|
ACPI_STATUS Status;
|
|
ACPI_GPE_EVENT_INFO LocalGpeEventInfo;
|
|
ACPI_EVALUATE_INFO *Info;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (EvAsynchExecuteGpeMethod);
|
|
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_VOID;
|
|
}
|
|
|
|
/* Must revalidate the GpeNumber/GpeBlock */
|
|
|
|
if (!AcpiEvValidGpeEvent (GpeEventInfo))
|
|
{
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
|
|
return_VOID;
|
|
}
|
|
|
|
/* Set the GPE flags for return to enabled state */
|
|
|
|
(void) AcpiEvEnableGpe (GpeEventInfo, FALSE);
|
|
|
|
/*
|
|
* Take a snapshot of the GPE info for this level - we copy the
|
|
* info to prevent a race condition with RemoveHandler/RemoveBlock.
|
|
*/
|
|
ACPI_MEMCPY (&LocalGpeEventInfo, GpeEventInfo,
|
|
sizeof (ACPI_GPE_EVENT_INFO));
|
|
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_VOID;
|
|
}
|
|
|
|
/*
|
|
* Must check for control method type dispatch one more
|
|
* time to avoid race with EvGpeInstallHandler
|
|
*/
|
|
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->Parameters = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT *, GpeEventInfo);
|
|
Info->ParameterType = ACPI_PARAM_GPE;
|
|
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 */
|
|
AcpiOsExecute(OSL_NOTIFY_HANDLER, AcpiEvAsynchEnableGpe, GpeEventInfo);
|
|
return_VOID;
|
|
}
|
|
|
|
static void
|
|
AcpiEvAsynchEnableGpe (
|
|
void *Context)
|
|
{
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo = (void *) 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))
|
|
{
|
|
return_VOID;
|
|
}
|
|
}
|
|
|
|
/* Enable this GPE */
|
|
|
|
(void) AcpiHwWriteGpeEnableReg (GpeEventInfo);
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* 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[%2X]", GpeNumber));
|
|
return_UINT32 (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
}
|
|
|
|
if (!AcpiGbl_SystemAwakeAndRunning)
|
|
{
|
|
/*
|
|
* We just woke up because of a wake GPE. Disable any further GPEs
|
|
* until we are fully up and running (Only wake GPEs should be enabled
|
|
* at this time, but we just brute-force disable them all.)
|
|
* 1) We must disable this particular wake GPE so it won't fire again
|
|
* 2) We want to disable all wake GPEs, since we are now awake
|
|
*/
|
|
(void) AcpiHwDisableAllGpes ();
|
|
}
|
|
|
|
/*
|
|
* 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[%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 = AcpiEvDisableGpe (GpeEventInfo);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"Unable to disable GPE[%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[%2X] - event disabled",
|
|
GpeNumber));
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
/* No handler or method to run! */
|
|
|
|
ACPI_ERROR ((AE_INFO,
|
|
"No handler or method for GPE[%2X], disabling event",
|
|
GpeNumber));
|
|
|
|
/*
|
|
* Disable the GPE. The GPE will remain disabled until the ACPI
|
|
* Core Subsystem is restarted, or a handler is installed.
|
|
*/
|
|
Status = AcpiEvDisableGpe (GpeEventInfo);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"Unable to disable GPE[%2X]", GpeNumber));
|
|
return_UINT32 (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return_UINT32 (ACPI_INTERRUPT_HANDLED);
|
|
}
|
|
|