| 0,0 → 1,1180 |
|---|
| /****************************************************************************** |
| * |
| * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable |
| * |
| *****************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. |
| * All rights reserved. |
| * |
| * 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 |
| * you this software, covering your right to use that party's intellectual |
| * property rights. |
| * |
| * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
| * 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: |
| * |
| * 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. |
| * |
| * 3.4. Intel retains all right, title, and interest in and to the Original |
| * Intel Code. |
| * |
| * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
| * 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. |
| * |
| * 4. Disclaimer and Export Compliance |
| * |
| * 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. |
| * |
| * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
| * 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. |
| * |
| * 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 |
| * such license, approval or letter. |
| * |
| *****************************************************************************/ |
| |
| |
| #define __EVXFEVNT_C__ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acevents.h" |
| #include "acnamesp.h" |
| #include "actables.h" |
| |
| #define _COMPONENT ACPI_EVENTS |
| ACPI_MODULE_NAME ("evxfevnt") |
| |
| /* Local prototypes */ |
| |
| static ACPI_STATUS |
| AcpiEvGetGpeDevice ( |
| ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| void *Context); |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEnable |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Transfers the system into ACPI mode. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiEnable ( |
| void) |
| { |
| ACPI_STATUS Status = AE_OK; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiEnable); |
| |
| |
| /* ACPI tables must be present */ |
| |
| if (!AcpiTbTablesLoaded ()) |
| { |
| return_ACPI_STATUS (AE_NO_ACPI_TABLES); |
| } |
| |
| /* Check current mode */ |
| |
| if (AcpiHwGetMode() == ACPI_SYS_MODE_ACPI) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in ACPI mode\n")); |
| } |
| else |
| { |
| /* Transition to ACPI mode */ |
| |
| Status = AcpiHwSetMode (ACPI_SYS_MODE_ACPI); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_ERROR ((AE_INFO, "Could not transition to ACPI mode")); |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_INIT, |
| "Transition to ACPI mode successful\n")); |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiEnable) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDisable |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Transfers the system into LEGACY (non-ACPI) mode. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiDisable ( |
| void) |
| { |
| ACPI_STATUS Status = AE_OK; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiDisable); |
| |
| |
| if (AcpiHwGetMode() == ACPI_SYS_MODE_LEGACY) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_INIT, |
| "System is already in legacy (non-ACPI) mode\n")); |
| } |
| else |
| { |
| /* Transition to LEGACY mode */ |
| |
| Status = AcpiHwSetMode (ACPI_SYS_MODE_LEGACY); |
| |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "Could not exit ACPI mode to legacy mode")); |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI mode disabled\n")); |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiDisable) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEnableEvent |
| * |
| * PARAMETERS: Event - The fixed eventto be enabled |
| * Flags - Reserved |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Enable an ACPI event (fixed) |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiEnableEvent ( |
| UINT32 Event, |
| UINT32 Flags) |
| { |
| ACPI_STATUS Status = AE_OK; |
| UINT32 Value; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiEnableEvent); |
| |
| |
| /* Decode the Fixed Event */ |
| |
| if (Event > ACPI_EVENT_MAX) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| /* |
| * Enable the requested fixed event (by writing a one to the enable |
| * register bit) |
| */ |
| Status = AcpiWriteBitRegister ( |
| AcpiGbl_FixedEventInfo[Event].EnableRegisterId, |
| ACPI_ENABLE_EVENT); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Make sure that the hardware responded */ |
| |
| Status = AcpiReadBitRegister ( |
| AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| if (Value != 1) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "Could not enable %s event", AcpiUtGetEventName (Event))); |
| return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiEnableEvent) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEnableGpe |
| * |
| * PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1 |
| * GpeNumber - GPE level within the GPE block |
| * GpeType - ACPI_GPE_TYPE_RUNTIME or ACPI_GPE_TYPE_WAKE |
| * or both |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is |
| * hardware-enabled (for runtime GPEs), or the GPE register mask |
| * is updated (for wake GPEs). |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiEnableGpe ( |
| ACPI_HANDLE GpeDevice, |
| UINT32 GpeNumber, |
| UINT8 GpeType) |
| { |
| ACPI_STATUS Status = AE_OK; |
| ACPI_GPE_EVENT_INFO *GpeEventInfo; |
| ACPI_CPU_FLAGS Flags; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiEnableGpe); |
| |
| |
| /* Parameter validation */ |
| |
| if (!GpeType || (GpeType & ~ACPI_GPE_TYPE_WAKE_RUN)) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); |
| |
| /* Ensure that we have a valid GPE number */ |
| |
| GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); |
| if (!GpeEventInfo) |
| { |
| Status = AE_BAD_PARAMETER; |
| goto UnlockAndExit; |
| } |
| |
| if (GpeType & ACPI_GPE_TYPE_RUNTIME) |
| { |
| if (GpeEventInfo->RuntimeCount == ACPI_UINT8_MAX) |
| { |
| Status = AE_LIMIT; /* Too many references */ |
| goto UnlockAndExit; |
| } |
| |
| GpeEventInfo->RuntimeCount++; |
| if (GpeEventInfo->RuntimeCount == 1) |
| { |
| Status = AcpiEvEnableGpe (GpeEventInfo); |
| if (ACPI_FAILURE (Status)) |
| { |
| GpeEventInfo->RuntimeCount--; |
| goto UnlockAndExit; |
| } |
| } |
| } |
| |
| if (GpeType & ACPI_GPE_TYPE_WAKE) |
| { |
| /* The GPE must have the ability to wake the system */ |
| |
| if (!(GpeEventInfo->Flags & ACPI_GPE_CAN_WAKE)) |
| { |
| Status = AE_TYPE; |
| goto UnlockAndExit; |
| } |
| |
| if (GpeEventInfo->WakeupCount == ACPI_UINT8_MAX) |
| { |
| Status = AE_LIMIT; /* Too many references */ |
| goto UnlockAndExit; |
| } |
| |
| /* |
| * Update the enable mask on the first wakeup reference. Wake GPEs |
| * are only hardware-enabled just before sleeping. |
| */ |
| GpeEventInfo->WakeupCount++; |
| if (GpeEventInfo->WakeupCount == 1) |
| { |
| (void) AcpiEvUpdateGpeEnableMasks (GpeEventInfo); |
| } |
| } |
| |
| UnlockAndExit: |
| AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiEnableGpe) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDisableGpe |
| * |
| * PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1 |
| * GpeNumber - GPE level within the GPE block |
| * GpeType - ACPI_GPE_TYPE_RUNTIME or ACPI_GPE_TYPE_WAKE |
| * or both |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Remove a reference to a GPE. When the last reference is |
| * removed, only then is the GPE disabled (for runtime GPEs), or |
| * the GPE mask bit disabled (for wake GPEs) |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiDisableGpe ( |
| ACPI_HANDLE GpeDevice, |
| UINT32 GpeNumber, |
| UINT8 GpeType) |
| { |
| ACPI_STATUS Status = AE_OK; |
| ACPI_GPE_EVENT_INFO *GpeEventInfo; |
| ACPI_CPU_FLAGS Flags; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiDisableGpe); |
| |
| |
| /* Parameter validation */ |
| |
| if (!GpeType || (GpeType & ~ACPI_GPE_TYPE_WAKE_RUN)) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); |
| |
| /* Ensure that we have a valid GPE number */ |
| |
| GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); |
| if (!GpeEventInfo) |
| { |
| Status = AE_BAD_PARAMETER; |
| goto UnlockAndExit; |
| } |
| |
| /* Hardware-disable a runtime GPE on removal of the last reference */ |
| |
| if (GpeType & ACPI_GPE_TYPE_RUNTIME) |
| { |
| if (!GpeEventInfo->RuntimeCount) |
| { |
| Status = AE_LIMIT; /* There are no references to remove */ |
| goto UnlockAndExit; |
| } |
| |
| GpeEventInfo->RuntimeCount--; |
| if (!GpeEventInfo->RuntimeCount) |
| { |
| Status = AcpiEvDisableGpe (GpeEventInfo); |
| if (ACPI_FAILURE (Status)) |
| { |
| GpeEventInfo->RuntimeCount++; |
| goto UnlockAndExit; |
| } |
| } |
| } |
| |
| /* |
| * Update masks for wake GPE on removal of the last reference. |
| * No need to hardware-disable wake GPEs here, they are not currently |
| * enabled. |
| */ |
| if (GpeType & ACPI_GPE_TYPE_WAKE) |
| { |
| if (!GpeEventInfo->WakeupCount) |
| { |
| Status = AE_LIMIT; /* There are no references to remove */ |
| goto UnlockAndExit; |
| } |
| |
| GpeEventInfo->WakeupCount--; |
| if (!GpeEventInfo->WakeupCount) |
| { |
| (void) AcpiEvUpdateGpeEnableMasks (GpeEventInfo); |
| } |
| } |
| |
| |
| UnlockAndExit: |
| AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiDisableGpe) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiSetGpe |
| * |
| * PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1 |
| * GpeNumber - GPE level within the GPE block |
| * Action - ACPI_GPE_ENABLE or ACPI_GPE_DISABLE |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Enable or disable an individual GPE. This function bypasses |
| * the reference count mechanism used in the AcpiEnableGpe and |
| * AcpiDisableGpe interfaces -- and should be used with care. |
| * |
| * Note: Typically used to disable a runtime GPE for short period of time, |
| * then re-enable it, without disturbing the existing reference counts. This |
| * is useful, for example, in the Embedded Controller (EC) driver. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiSetGpe ( |
| ACPI_HANDLE GpeDevice, |
| UINT32 GpeNumber, |
| UINT8 Action) |
| { |
| ACPI_GPE_EVENT_INFO *GpeEventInfo; |
| ACPI_STATUS Status; |
| ACPI_CPU_FLAGS Flags; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiSetGpe); |
| |
| |
| Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); |
| |
| /* Ensure that we have a valid GPE number */ |
| |
| GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); |
| if (!GpeEventInfo) |
| { |
| Status = AE_BAD_PARAMETER; |
| goto UnlockAndExit; |
| } |
| |
| /* Perform the action */ |
| |
| switch (Action) |
| { |
| case ACPI_GPE_ENABLE: |
| Status = AcpiEvEnableGpe (GpeEventInfo); |
| break; |
| |
| case ACPI_GPE_DISABLE: |
| Status = AcpiEvDisableGpe (GpeEventInfo); |
| break; |
| |
| default: |
| Status = AE_BAD_PARAMETER; |
| break; |
| } |
| |
| UnlockAndExit: |
| AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiSetGpe) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDisableEvent |
| * |
| * PARAMETERS: Event - The fixed eventto be enabled |
| * Flags - Reserved |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Disable an ACPI event (fixed) |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiDisableEvent ( |
| UINT32 Event, |
| UINT32 Flags) |
| { |
| ACPI_STATUS Status = AE_OK; |
| UINT32 Value; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiDisableEvent); |
| |
| |
| /* Decode the Fixed Event */ |
| |
| if (Event > ACPI_EVENT_MAX) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| /* |
| * Disable the requested fixed event (by writing a zero to the enable |
| * register bit) |
| */ |
| Status = AcpiWriteBitRegister ( |
| AcpiGbl_FixedEventInfo[Event].EnableRegisterId, |
| ACPI_DISABLE_EVENT); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| Status = AcpiReadBitRegister ( |
| AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| if (Value != 0) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "Could not disable %s events", AcpiUtGetEventName (Event))); |
| return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiDisableEvent) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiClearEvent |
| * |
| * PARAMETERS: Event - The fixed event to be cleared |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Clear an ACPI event (fixed) |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiClearEvent ( |
| UINT32 Event) |
| { |
| ACPI_STATUS Status = AE_OK; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiClearEvent); |
| |
| |
| /* Decode the Fixed Event */ |
| |
| if (Event > ACPI_EVENT_MAX) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| /* |
| * Clear the requested fixed event (By writing a one to the status |
| * register bit) |
| */ |
| Status = AcpiWriteBitRegister ( |
| AcpiGbl_FixedEventInfo[Event].StatusRegisterId, |
| ACPI_CLEAR_STATUS); |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiClearEvent) |
| |
| |
| /******************************************************************************* |
| * |
| * 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: AcpiGetEventStatus |
| * |
| * PARAMETERS: Event - The fixed event |
| * EventStatus - Where the current status of the event will |
| * be returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Obtains and returns the current status of the event |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiGetEventStatus ( |
| UINT32 Event, |
| ACPI_EVENT_STATUS *EventStatus) |
| { |
| ACPI_STATUS Status = AE_OK; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiGetEventStatus); |
| |
| |
| if (!EventStatus) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| /* Decode the Fixed Event */ |
| |
| if (Event > ACPI_EVENT_MAX) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| /* Get the status of the requested fixed event */ |
| |
| Status = AcpiReadBitRegister ( |
| AcpiGbl_FixedEventInfo[Event].StatusRegisterId, EventStatus); |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiGetEventStatus) |
| |
| |
| /******************************************************************************* |
| * |
| * 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 status of an event (general purpose) |
| * |
| ******************************************************************************/ |
| |
| 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: 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 |
| * |
| ******************************************************************************/ |
| |
| 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; |
| |
| /* Run the _PRW methods and enable the runtime GPEs in the new block */ |
| |
| Status = AcpiEvInitializeGpeBlock (Node, 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) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEvGetGpeDevice |
| * |
| * PARAMETERS: GPE_WALK_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Matches the input GPE index (0-CurrentGpeCount) with a GPE |
| * block device. NULL if the GPE is one of the FADT-defined GPEs. |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiEvGetGpeDevice ( |
| ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| void *Context) |
| { |
| ACPI_GPE_DEVICE_INFO *Info = Context; |
| |
| |
| /* Increment Index by the number of GPEs in this block */ |
| |
| Info->NextBlockBaseIndex += GpeBlock->GpeCount; |
| |
| if (Info->Index < Info->NextBlockBaseIndex) |
| { |
| /* |
| * The GPE index is within this block, get the node. Leave the node |
| * NULL for the FADT-defined GPEs |
| */ |
| if ((GpeBlock->Node)->Type == ACPI_TYPE_DEVICE) |
| { |
| Info->GpeDevice = GpeBlock->Node; |
| } |
| |
| Info->Status = AE_OK; |
| return (AE_CTRL_END); |
| } |
| |
| return (AE_OK); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * 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); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * 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); |
| } |
| |
| |