/****************************************************************************** * * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable * $Revision: 1.94 $ * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2008, 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 "acevents.h" #include "acnamesp.h" #include "actables.h" #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME ("evxfevnt") /******************************************************************************* * * 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 = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId, 1); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Make sure that the hardware responded */ Status = AcpiGetRegister (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: AcpiSetGpeType * * PARAMETERS: GpeDevice - Parent GPE Device * GpeNumber - GPE level within the GPE block * Type - New GPE type * * RETURN: Status * * DESCRIPTION: Set the type of an individual GPE * ******************************************************************************/ ACPI_STATUS AcpiSetGpeType ( ACPI_HANDLE GpeDevice, UINT32 GpeNumber, UINT8 Type) { ACPI_STATUS Status = AE_OK; ACPI_GPE_EVENT_INFO *GpeEventInfo; ACPI_FUNCTION_TRACE (AcpiSetGpeType); /* Ensure that we have a valid GPE number */ GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); if (!GpeEventInfo) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } if ((GpeEventInfo->Flags & ACPI_GPE_TYPE_MASK) == Type) { return_ACPI_STATUS (AE_OK); } /* Set the new type (will disable GPE if currently enabled) */ Status = AcpiEvSetGpeType (GpeEventInfo, Type); UnlockAndExit: return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL (AcpiSetGpeType) /******************************************************************************* * * FUNCTION: AcpiEnableGpe * * PARAMETERS: GpeDevice - Parent GPE Device * GpeNumber - GPE level within the GPE block * Flags - Just enable, or also wake enable? * Called from ISR or not * * RETURN: Status * * DESCRIPTION: Enable an ACPI event (general purpose) * ******************************************************************************/ ACPI_STATUS AcpiEnableGpe ( ACPI_HANDLE GpeDevice, UINT32 GpeNumber, UINT32 Flags) { ACPI_STATUS Status = AE_OK; ACPI_GPE_EVENT_INFO *GpeEventInfo; ACPI_FUNCTION_TRACE (AcpiEnableGpe); /* Use semaphore lock if not executing at interrupt level */ if (Flags & ACPI_NOT_ISR) { Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* Ensure that we have a valid GPE number */ GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); if (!GpeEventInfo) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } /* Perform the enable */ Status = AcpiEvEnableGpe (GpeEventInfo, TRUE); UnlockAndExit: if (Flags & ACPI_NOT_ISR) { (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); } return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL (AcpiEnableGpe) /******************************************************************************* * * FUNCTION: AcpiDisableGpe * * PARAMETERS: GpeDevice - Parent GPE Device * GpeNumber - GPE level within the GPE block * Flags - Just disable, or also wake disable? * Called from ISR or not * * RETURN: Status * * DESCRIPTION: Disable an ACPI event (general purpose) * ******************************************************************************/ ACPI_STATUS AcpiDisableGpe ( ACPI_HANDLE GpeDevice, UINT32 GpeNumber, UINT32 Flags) { ACPI_STATUS Status = AE_OK; ACPI_GPE_EVENT_INFO *GpeEventInfo; ACPI_FUNCTION_TRACE (AcpiDisableGpe); /* Use semaphore lock if not executing at interrupt level */ if (Flags & ACPI_NOT_ISR) { Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* Ensure that we have a valid GPE number */ GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); if (!GpeEventInfo) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } Status = AcpiEvDisableGpe (GpeEventInfo); UnlockAndExit: if (Flags & ACPI_NOT_ISR) { (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); } return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL (AcpiDisableGpe) /******************************************************************************* * * 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 = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId, 0); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Status = AcpiGetRegister (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 = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].StatusRegisterId, 1); return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL (AcpiClearEvent) /******************************************************************************* * * FUNCTION: AcpiClearGpe * * PARAMETERS: GpeDevice - Parent GPE Device * GpeNumber - GPE level within the GPE block * Flags - Called from an ISR or not * * RETURN: Status * * DESCRIPTION: Clear an ACPI event (general purpose) * ******************************************************************************/ ACPI_STATUS AcpiClearGpe ( ACPI_HANDLE GpeDevice, UINT32 GpeNumber, UINT32 Flags) { ACPI_STATUS Status = AE_OK; ACPI_GPE_EVENT_INFO *GpeEventInfo; ACPI_FUNCTION_TRACE (AcpiClearGpe); /* Use semaphore lock if not executing at interrupt level */ if (Flags & ACPI_NOT_ISR) { Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* Ensure that we have a valid GPE number */ GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); if (!GpeEventInfo) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } Status = AcpiHwClearGpe (GpeEventInfo); UnlockAndExit: if (Flags & ACPI_NOT_ISR) { (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); } 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 = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].StatusRegisterId, EventStatus); return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL (AcpiGetEventStatus) /******************************************************************************* * * FUNCTION: AcpiGetGpeStatus * * PARAMETERS: GpeDevice - Parent GPE Device * GpeNumber - GPE level within the GPE block * Flags - Called from an ISR or not * 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, UINT32 Flags, ACPI_EVENT_STATUS *EventStatus) { ACPI_STATUS Status = AE_OK; ACPI_GPE_EVENT_INFO *GpeEventInfo; ACPI_FUNCTION_TRACE (AcpiGetGpeStatus); /* Use semaphore lock if not executing at interrupt level */ if (Flags & ACPI_NOT_ISR) { Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* 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: if (Flags & ACPI_NOT_ISR) { (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); } 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 = AcpiNsMapHandleToNode (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; } /* Run the _PRW methods and enable the GPEs */ Status = AcpiEvInitializeGpeBlock (Node, GpeBlock); if (ACPI_FAILURE (Status)) { goto UnlockAndExit; } /* Get the DeviceObject attached to the node */ ObjDesc = AcpiNsGetAttachedObject (Node); if (!ObjDesc) { /* No object, create a new one */ 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; } } /* 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 = AcpiNsMapHandleToNode (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)