968 lines
26 KiB
C
968 lines
26 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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* Copyright (C) 2000 - 2013, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#define __EVXFGPE_C__
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#include <contrib/dev/acpica/include/acpi.h>
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#include <contrib/dev/acpica/include/accommon.h>
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#include <contrib/dev/acpica/include/acevents.h>
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#include <contrib/dev/acpica/include/acnamesp.h>
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#define _COMPONENT ACPI_EVENTS
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ACPI_MODULE_NAME ("evxfgpe")
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#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
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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 (AcpiUpdateAllGpes);
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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;
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ACPI_GPE_EVENT_INFO *GpeEventInfo;
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ACPI_NAMESPACE_NODE *DeviceNode;
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ACPI_GPE_NOTIFY_INFO *Notify;
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ACPI_GPE_NOTIFY_INFO *NewNotify;
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ACPI_CPU_FLAGS Flags;
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ACPI_FUNCTION_TRACE (AcpiSetupGpeForWake);
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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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/* 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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* Allocate a new notify object up front, in case it is needed.
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* Memory allocation while holding a spinlock is a big no-no
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* on some hosts.
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*/
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NewNotify = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_NOTIFY_INFO));
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if (!NewNotify)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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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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/*
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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. This is
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* known as an "implicit notify". Note: The GPE is assumed to be
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* level-triggered (for windows compatibility).
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*/
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if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) ==
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ACPI_GPE_DISPATCH_NONE)
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{
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/*
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* This is the first device for implicit notify on this GPE.
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* Just set the flags here, and enter the NOTIFY block below.
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*/
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GpeEventInfo->Flags =
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(ACPI_GPE_DISPATCH_NOTIFY | ACPI_GPE_LEVEL_TRIGGERED);
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}
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|
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/*
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* If we already have an implicit notify on this GPE, add
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* this device to the notify list.
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*/
|
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if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) ==
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ACPI_GPE_DISPATCH_NOTIFY)
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{
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/* Ensure that the device is not already in the list */
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|
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Notify = GpeEventInfo->Dispatch.NotifyList;
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while (Notify)
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{
|
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if (Notify->DeviceNode == DeviceNode)
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{
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Status = AE_ALREADY_EXISTS;
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goto UnlockAndExit;
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}
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Notify = Notify->Next;
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}
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|
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/* Add this device to the notify list for this GPE */
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|
|
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NewNotify->DeviceNode = DeviceNode;
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NewNotify->Next = GpeEventInfo->Dispatch.NotifyList;
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GpeEventInfo->Dispatch.NotifyList = NewNotify;
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NewNotify = NULL;
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}
|
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|
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/* Mark the GPE as a possible wake event */
|
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|
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GpeEventInfo->Flags |= ACPI_GPE_CAN_WAKE;
|
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Status = AE_OK;
|
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|
|
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UnlockAndExit:
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AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
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|
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/* Delete the notify object if it was not used above */
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|
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if (NewNotify)
|
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{
|
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ACPI_FREE (NewNotify);
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}
|
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return_ACPI_STATUS (Status);
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}
|
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|
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ACPI_EXPORT_SYMBOL (AcpiSetupGpeForWake)
|
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|
|
|
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/*******************************************************************************
|
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*
|
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* FUNCTION: AcpiSetGpeWakeMask
|
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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 - Enable or Disable
|
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*
|
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* RETURN: Status
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*
|
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* DESCRIPTION: Set or clear the GPE's wakeup enable mask bit. The GPE must
|
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* already be marked as a WAKE GPE.
|
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*
|
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******************************************************************************/
|
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|
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ACPI_STATUS
|
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AcpiSetGpeWakeMask (
|
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ACPI_HANDLE GpeDevice,
|
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UINT32 GpeNumber,
|
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UINT8 Action)
|
|
{
|
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ACPI_STATUS Status = AE_OK;
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo;
|
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ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
|
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ACPI_CPU_FLAGS Flags;
|
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UINT32 RegisterBit;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiSetGpeWakeMask);
|
|
|
|
|
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Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
|
|
|
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/*
|
|
* Ensure that we have a valid GPE number and that this GPE is in
|
|
* fact a wake GPE
|
|
*/
|
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GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
|
|
if (!GpeEventInfo)
|
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{
|
|
Status = AE_BAD_PARAMETER;
|
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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);
|
|
|
|
/* Perform the action */
|
|
|
|
switch (Action)
|
|
{
|
|
case ACPI_GPE_ENABLE:
|
|
|
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ACPI_SET_BIT (GpeRegisterInfo->EnableForWake, (UINT8) RegisterBit);
|
|
break;
|
|
|
|
case ACPI_GPE_DISABLE:
|
|
|
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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_ACPI_STATUS (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_ACPI_STATUS (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)
|
|
|
|
#endif /* !ACPI_REDUCED_HARDWARE */
|