973 lines
28 KiB
C
973 lines
28 KiB
C
/******************************************************************************
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*
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* Module Name: evxfgpe - External Interfaces for General Purpose Events (GPEs)
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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 - 2011, 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
|
|
* 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
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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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#define __EVXFGPE_C__
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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 ("evxfgpe")
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/*******************************************************************************
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*
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* FUNCTION: AcpiUpdateAllGpes
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Complete GPE initialization and enable all GPEs that have
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* associated _Lxx or _Exx methods and are not pointed to by any
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* device _PRW methods (this indicates that these GPEs are
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* generally intended for system or device wakeup. Such GPEs
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* have to be enabled directly when the devices whose _PRW
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* methods point to them are set up for wakeup signaling.)
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*
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* NOTE: Should be called after any GPEs are added to the system. Primarily,
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* after the system _PRW methods have been run, but also after a GPE Block
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* Device has been added or if any new GPE methods have been added via a
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* dynamic table load.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiUpdateAllGpes (
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void)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (AcpiUpdateGpes);
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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_ACPI_STATUS (Status);
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}
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if (AcpiGbl_AllGpesInitialized)
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{
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goto UnlockAndExit;
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}
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Status = AcpiEvWalkGpeList (AcpiEvInitializeGpeBlock, NULL);
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if (ACPI_SUCCESS (Status))
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{
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AcpiGbl_AllGpesInitialized = TRUE;
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}
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UnlockAndExit:
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(void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiUpdateAllGpes)
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/*******************************************************************************
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*
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* FUNCTION: AcpiEnableGpe
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*
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* PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1
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* GpeNumber - GPE level within the GPE block
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*
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* RETURN: Status
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*
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* DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is
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* hardware-enabled.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEnableGpe (
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ACPI_HANDLE GpeDevice,
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UINT32 GpeNumber)
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{
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ACPI_STATUS Status = AE_BAD_PARAMETER;
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ACPI_GPE_EVENT_INFO *GpeEventInfo;
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ACPI_CPU_FLAGS Flags;
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ACPI_FUNCTION_TRACE (AcpiEnableGpe);
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Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
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/* Ensure that we have a valid GPE number */
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GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
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if (GpeEventInfo)
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{
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Status = AcpiEvAddGpeReference (GpeEventInfo);
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}
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AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiEnableGpe)
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/*******************************************************************************
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*
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* FUNCTION: AcpiDisableGpe
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*
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* PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1
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* GpeNumber - GPE level within the GPE block
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*
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* RETURN: Status
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*
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* DESCRIPTION: Remove a reference to a GPE. When the last reference is
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* removed, only then is the GPE disabled (for runtime GPEs), or
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* the GPE mask bit disabled (for wake GPEs)
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDisableGpe (
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ACPI_HANDLE GpeDevice,
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UINT32 GpeNumber)
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{
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ACPI_STATUS Status = AE_BAD_PARAMETER;
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ACPI_GPE_EVENT_INFO *GpeEventInfo;
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ACPI_CPU_FLAGS Flags;
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ACPI_FUNCTION_TRACE (AcpiDisableGpe);
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Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
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/* Ensure that we have a valid GPE number */
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GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
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if (GpeEventInfo)
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{
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Status = AcpiEvRemoveGpeReference (GpeEventInfo);
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}
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AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiDisableGpe)
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/*******************************************************************************
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*
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* FUNCTION: AcpiSetGpe
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*
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* PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1
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* GpeNumber - GPE level within the GPE block
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* Action - ACPI_GPE_ENABLE or ACPI_GPE_DISABLE
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*
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* RETURN: Status
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*
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* DESCRIPTION: Enable or disable an individual GPE. This function bypasses
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* the reference count mechanism used in the AcpiEnableGpe and
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* AcpiDisableGpe interfaces -- and should be used with care.
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*
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* Note: Typically used to disable a runtime GPE for short period of time,
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* then re-enable it, without disturbing the existing reference counts. This
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* is useful, for example, in the Embedded Controller (EC) driver.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiSetGpe (
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ACPI_HANDLE GpeDevice,
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UINT32 GpeNumber,
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UINT8 Action)
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{
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ACPI_GPE_EVENT_INFO *GpeEventInfo;
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ACPI_STATUS Status;
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ACPI_CPU_FLAGS Flags;
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ACPI_FUNCTION_TRACE (AcpiSetGpe);
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Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
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/* Ensure that we have a valid GPE number */
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GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
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if (!GpeEventInfo)
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{
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Status = AE_BAD_PARAMETER;
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goto UnlockAndExit;
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}
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/* Perform the action */
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switch (Action)
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{
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case ACPI_GPE_ENABLE:
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Status = AcpiEvEnableGpe (GpeEventInfo);
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break;
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case ACPI_GPE_DISABLE:
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Status = AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_DISABLE);
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break;
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default:
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Status = AE_BAD_PARAMETER;
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break;
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}
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UnlockAndExit:
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AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
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return_ACPI_STATUS (Status);
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}
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ACPI_EXPORT_SYMBOL (AcpiSetGpe)
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/*******************************************************************************
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*
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* FUNCTION: AcpiSetupGpeForWake
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*
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* PARAMETERS: WakeDevice - Device associated with the GPE (via _PRW)
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* GpeDevice - Parent GPE Device. NULL for GPE0/GPE1
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* GpeNumber - GPE level within the GPE block
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*
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* RETURN: Status
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*
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* DESCRIPTION: Mark a GPE as having the ability to wake the system. This
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* interface is intended to be used as the host executes the
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* _PRW methods (Power Resources for Wake) in the system tables.
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* Each _PRW appears under a Device Object (The WakeDevice), and
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* contains the info for the wake GPE associated with the
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* WakeDevice.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiSetupGpeForWake (
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ACPI_HANDLE WakeDevice,
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ACPI_HANDLE GpeDevice,
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UINT32 GpeNumber)
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{
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ACPI_STATUS Status = AE_BAD_PARAMETER;
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ACPI_GPE_EVENT_INFO *GpeEventInfo;
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ACPI_NAMESPACE_NODE *DeviceNode;
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ACPI_CPU_FLAGS Flags;
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|
|
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ACPI_FUNCTION_TRACE (AcpiSetupGpeForWake);
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|
|
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/* Parameter Validation */
|
|
|
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if (!WakeDevice)
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{
|
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/*
|
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* By forcing WakeDevice to be valid, we automatically enable the
|
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* implicit notify feature on all hosts.
|
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*/
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return_ACPI_STATUS (AE_BAD_PARAMETER);
|
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}
|
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|
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/* Handle root object case */
|
|
|
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if (WakeDevice == ACPI_ROOT_OBJECT)
|
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{
|
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DeviceNode = AcpiGbl_RootNode;
|
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}
|
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else
|
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{
|
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DeviceNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, WakeDevice);
|
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}
|
|
|
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/* Validate WakeDevice is of type Device */
|
|
|
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if (DeviceNode->Type != ACPI_TYPE_DEVICE)
|
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{
|
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return_ACPI_STATUS (AE_BAD_PARAMETER);
|
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}
|
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|
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Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
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|
|
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/* Ensure that we have a valid GPE number */
|
|
|
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GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
|
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if (GpeEventInfo)
|
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{
|
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/*
|
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* If there is no method or handler for this GPE, then the
|
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* WakeDevice will be notified whenever this GPE fires (aka
|
|
* "implicit notify") Note: The GPE is assumed to be
|
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* level-triggered (for windows compatibility).
|
|
*/
|
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if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) ==
|
|
ACPI_GPE_DISPATCH_NONE)
|
|
{
|
|
GpeEventInfo->Flags =
|
|
(ACPI_GPE_DISPATCH_NOTIFY | ACPI_GPE_LEVEL_TRIGGERED);
|
|
GpeEventInfo->Dispatch.DeviceNode = DeviceNode;
|
|
}
|
|
|
|
GpeEventInfo->Flags |= ACPI_GPE_CAN_WAKE;
|
|
Status = AE_OK;
|
|
}
|
|
|
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AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiSetupGpeForWake)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiSetGpeWakeMask
|
|
*
|
|
* PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1
|
|
* GpeNumber - GPE level within the GPE block
|
|
* Action - Enable or Disable
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Set or clear the GPE's wakeup enable mask bit. The GPE must
|
|
* already be marked as a WAKE GPE.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiSetGpeWakeMask (
|
|
ACPI_HANDLE GpeDevice,
|
|
UINT32 GpeNumber,
|
|
UINT8 Action)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo;
|
|
ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
|
|
ACPI_CPU_FLAGS Flags;
|
|
UINT32 RegisterBit;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiSetGpeWakeMask);
|
|
|
|
|
|
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
|
|
|
|
/*
|
|
* Ensure that we have a valid GPE number and that this GPE is in
|
|
* fact a wake GPE
|
|
*/
|
|
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
|
|
if (!GpeEventInfo)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
if (!(GpeEventInfo->Flags & ACPI_GPE_CAN_WAKE))
|
|
{
|
|
Status = AE_TYPE;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
GpeRegisterInfo = GpeEventInfo->RegisterInfo;
|
|
if (!GpeRegisterInfo)
|
|
{
|
|
Status = AE_NOT_EXIST;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo, GpeRegisterInfo);
|
|
|
|
/* Perform the action */
|
|
|
|
switch (Action)
|
|
{
|
|
case ACPI_GPE_ENABLE:
|
|
ACPI_SET_BIT (GpeRegisterInfo->EnableForWake, (UINT8) RegisterBit);
|
|
break;
|
|
|
|
case ACPI_GPE_DISABLE:
|
|
ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForWake, (UINT8) RegisterBit);
|
|
break;
|
|
|
|
default:
|
|
ACPI_ERROR ((AE_INFO, "%u, Invalid action", Action));
|
|
Status = AE_BAD_PARAMETER;
|
|
break;
|
|
}
|
|
|
|
UnlockAndExit:
|
|
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiSetGpeWakeMask)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiClearGpe
|
|
*
|
|
* PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1
|
|
* GpeNumber - GPE level within the GPE block
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Clear an ACPI event (general purpose)
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiClearGpe (
|
|
ACPI_HANDLE GpeDevice,
|
|
UINT32 GpeNumber)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo;
|
|
ACPI_CPU_FLAGS Flags;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiClearGpe);
|
|
|
|
|
|
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
|
|
|
|
/* Ensure that we have a valid GPE number */
|
|
|
|
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
|
|
if (!GpeEventInfo)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
Status = AcpiHwClearGpe (GpeEventInfo);
|
|
|
|
UnlockAndExit:
|
|
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiClearGpe)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiGetGpeStatus
|
|
*
|
|
* PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1
|
|
* GpeNumber - GPE level within the GPE block
|
|
* EventStatus - Where the current status of the event
|
|
* will be returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Get the current status of a GPE (signalled/not_signalled)
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiGetGpeStatus (
|
|
ACPI_HANDLE GpeDevice,
|
|
UINT32 GpeNumber,
|
|
ACPI_EVENT_STATUS *EventStatus)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo;
|
|
ACPI_CPU_FLAGS Flags;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiGetGpeStatus);
|
|
|
|
|
|
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
|
|
|
|
/* Ensure that we have a valid GPE number */
|
|
|
|
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
|
|
if (!GpeEventInfo)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Obtain status on the requested GPE number */
|
|
|
|
Status = AcpiHwGetGpeStatus (GpeEventInfo, EventStatus);
|
|
|
|
UnlockAndExit:
|
|
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiGetGpeStatus)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiFinishGpe
|
|
*
|
|
* PARAMETERS: GpeDevice - Namespace node for the GPE Block
|
|
* (NULL for FADT defined GPEs)
|
|
* GpeNumber - GPE level within the GPE block
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Clear and conditionally reenable a GPE. This completes the GPE
|
|
* processing. Intended for use by asynchronous host-installed
|
|
* GPE handlers. The GPE is only reenabled if the EnableForRun bit
|
|
* is set in the GPE info.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiFinishGpe (
|
|
ACPI_HANDLE GpeDevice,
|
|
UINT32 GpeNumber)
|
|
{
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo;
|
|
ACPI_STATUS Status;
|
|
ACPI_CPU_FLAGS Flags;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiFinishGpe);
|
|
|
|
|
|
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
|
|
|
|
/* Ensure that we have a valid GPE number */
|
|
|
|
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
|
|
if (!GpeEventInfo)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
Status = AcpiEvFinishGpe (GpeEventInfo);
|
|
|
|
UnlockAndExit:
|
|
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiFinishGpe)
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDisableAllGpes
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Disable and clear all GPEs in all GPE blocks
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDisableAllGpes (
|
|
void)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiDisableAllGpes);
|
|
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Status = AcpiHwDisableAllGpes ();
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiDisableAllGpes)
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEnableAllRuntimeGpes
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEnableAllRuntimeGpes (
|
|
void)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiEnableAllRuntimeGpes);
|
|
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Status = AcpiHwEnableAllRuntimeGpes ();
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiEnableAllRuntimeGpes)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiInstallGpeBlock
|
|
*
|
|
* PARAMETERS: GpeDevice - Handle to the parent GPE Block Device
|
|
* GpeBlockAddress - Address and SpaceID
|
|
* RegisterCount - Number of GPE register pairs in the block
|
|
* InterruptNumber - H/W interrupt for the block
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Create and Install a block of GPE registers. The GPEs are not
|
|
* enabled here.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiInstallGpeBlock (
|
|
ACPI_HANDLE GpeDevice,
|
|
ACPI_GENERIC_ADDRESS *GpeBlockAddress,
|
|
UINT32 RegisterCount,
|
|
UINT32 InterruptNumber)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_GPE_BLOCK_INFO *GpeBlock;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiInstallGpeBlock);
|
|
|
|
|
|
if ((!GpeDevice) ||
|
|
(!GpeBlockAddress) ||
|
|
(!RegisterCount))
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
Node = AcpiNsValidateHandle (GpeDevice);
|
|
if (!Node)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/*
|
|
* For user-installed GPE Block Devices, the GpeBlockBaseNumber
|
|
* is always zero
|
|
*/
|
|
Status = AcpiEvCreateGpeBlock (Node, GpeBlockAddress, RegisterCount,
|
|
0, InterruptNumber, &GpeBlock);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Install block in the DeviceObject attached to the node */
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (!ObjDesc)
|
|
{
|
|
/*
|
|
* No object, create a new one (Device nodes do not always have
|
|
* an attached object)
|
|
*/
|
|
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_DEVICE);
|
|
if (!ObjDesc)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_DEVICE);
|
|
|
|
/* Remove local reference to the object */
|
|
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
}
|
|
|
|
/* Now install the GPE block in the DeviceObject */
|
|
|
|
ObjDesc->Device.GpeBlock = GpeBlock;
|
|
|
|
|
|
UnlockAndExit:
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiInstallGpeBlock)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiRemoveGpeBlock
|
|
*
|
|
* PARAMETERS: GpeDevice - Handle to the parent GPE Block Device
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Remove a previously installed block of GPE registers
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiRemoveGpeBlock (
|
|
ACPI_HANDLE GpeDevice)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiRemoveGpeBlock);
|
|
|
|
|
|
if (!GpeDevice)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (Status);
|
|
}
|
|
|
|
Node = AcpiNsValidateHandle (GpeDevice);
|
|
if (!Node)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Get the DeviceObject attached to the node */
|
|
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (!ObjDesc ||
|
|
!ObjDesc->Device.GpeBlock)
|
|
{
|
|
return_ACPI_STATUS (AE_NULL_OBJECT);
|
|
}
|
|
|
|
/* Delete the GPE block (but not the DeviceObject) */
|
|
|
|
Status = AcpiEvDeleteGpeBlock (ObjDesc->Device.GpeBlock);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
ObjDesc->Device.GpeBlock = NULL;
|
|
}
|
|
|
|
UnlockAndExit:
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiRemoveGpeBlock)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiGetGpeDevice
|
|
*
|
|
* PARAMETERS: Index - System GPE index (0-CurrentGpeCount)
|
|
* GpeDevice - Where the parent GPE Device is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Obtain the GPE device associated with the input index. A NULL
|
|
* gpe device indicates that the gpe number is contained in one of
|
|
* the FADT-defined gpe blocks. Otherwise, the GPE block device.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiGetGpeDevice (
|
|
UINT32 Index,
|
|
ACPI_HANDLE *GpeDevice)
|
|
{
|
|
ACPI_GPE_DEVICE_INFO Info;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiGetGpeDevice);
|
|
|
|
|
|
if (!GpeDevice)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (Index >= AcpiCurrentGpeCount)
|
|
{
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|
|
|
|
/* Setup and walk the GPE list */
|
|
|
|
Info.Index = Index;
|
|
Info.Status = AE_NOT_EXIST;
|
|
Info.GpeDevice = NULL;
|
|
Info.NextBlockBaseIndex = 0;
|
|
|
|
Status = AcpiEvWalkGpeList (AcpiEvGetGpeDevice, &Info);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
*GpeDevice = ACPI_CAST_PTR (ACPI_HANDLE, Info.GpeDevice);
|
|
return_ACPI_STATUS (Info.Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiGetGpeDevice)
|