diff options
Diffstat (limited to 'sys/contrib/dev/acpica/evxface.c')
| -rw-r--r-- | sys/contrib/dev/acpica/evxface.c | 965 |
1 files changed, 0 insertions, 965 deletions
diff --git a/sys/contrib/dev/acpica/evxface.c b/sys/contrib/dev/acpica/evxface.c deleted file mode 100644 index 15fbc9c..0000000 --- a/sys/contrib/dev/acpica/evxface.c +++ /dev/null @@ -1,965 +0,0 @@ -/****************************************************************************** - * - * Module Name: evxface - External interfaces for ACPI events - * $Revision: 1.165 $ - * - *****************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999 - 2007, 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 __EVXFACE_C__ - -#include <contrib/dev/acpica/acpi.h> -#include <contrib/dev/acpica/acnamesp.h> -#include <contrib/dev/acpica/acevents.h> -#include <contrib/dev/acpica/acinterp.h> - -#define _COMPONENT ACPI_EVENTS - ACPI_MODULE_NAME ("evxface") - - -/******************************************************************************* - * - * FUNCTION: AcpiInstallExceptionHandler - * - * PARAMETERS: Handler - Pointer to the handler function for the - * event - * - * RETURN: Status - * - * DESCRIPTION: Saves the pointer to the handler function - * - ******************************************************************************/ - -ACPI_STATUS -AcpiInstallExceptionHandler ( - ACPI_EXCEPTION_HANDLER Handler) -{ - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (AcpiInstallExceptionHandler); - - - Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Don't allow two handlers. */ - - if (AcpiGbl_ExceptionHandler) - { - Status = AE_ALREADY_EXISTS; - goto Cleanup; - } - - /* Install the handler */ - - AcpiGbl_ExceptionHandler = Handler; - -Cleanup: - (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); - return_ACPI_STATUS (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiInstallExceptionHandler) - - -/******************************************************************************* - * - * FUNCTION: AcpiInstallFixedEventHandler - * - * PARAMETERS: Event - Event type to enable. - * Handler - Pointer to the handler function for the - * event - * Context - Value passed to the handler on each GPE - * - * RETURN: Status - * - * DESCRIPTION: Saves the pointer to the handler function and then enables the - * event. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiInstallFixedEventHandler ( - UINT32 Event, - ACPI_EVENT_HANDLER Handler, - void *Context) -{ - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (AcpiInstallFixedEventHandler); - - - /* Parameter validation */ - - if (Event > ACPI_EVENT_MAX) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Don't allow two handlers. */ - - if (NULL != AcpiGbl_FixedEventHandlers[Event].Handler) - { - Status = AE_ALREADY_EXISTS; - goto Cleanup; - } - - /* Install the handler before enabling the event */ - - AcpiGbl_FixedEventHandlers[Event].Handler = Handler; - AcpiGbl_FixedEventHandlers[Event].Context = Context; - - Status = AcpiEnableEvent (Event, 0); - if (ACPI_FAILURE (Status)) - { - ACPI_WARNING ((AE_INFO, "Could not enable fixed event %X", Event)); - - /* Remove the handler */ - - AcpiGbl_FixedEventHandlers[Event].Handler = NULL; - AcpiGbl_FixedEventHandlers[Event].Context = NULL; - } - else - { - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "Enabled fixed event %X, Handler=%p\n", Event, Handler)); - } - - -Cleanup: - (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); - return_ACPI_STATUS (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiInstallFixedEventHandler) - - -/******************************************************************************* - * - * FUNCTION: AcpiRemoveFixedEventHandler - * - * PARAMETERS: Event - Event type to disable. - * Handler - Address of the handler - * - * RETURN: Status - * - * DESCRIPTION: Disables the event and unregisters the event handler. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiRemoveFixedEventHandler ( - UINT32 Event, - ACPI_EVENT_HANDLER Handler) -{ - ACPI_STATUS Status = AE_OK; - - - ACPI_FUNCTION_TRACE (AcpiRemoveFixedEventHandler); - - - /* Parameter validation */ - - if (Event > ACPI_EVENT_MAX) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Disable the event before removing the handler */ - - Status = AcpiDisableEvent (Event, 0); - - /* Always Remove the handler */ - - AcpiGbl_FixedEventHandlers[Event].Handler = NULL; - AcpiGbl_FixedEventHandlers[Event].Context = NULL; - - if (ACPI_FAILURE (Status)) - { - ACPI_WARNING ((AE_INFO, - "Could not write to fixed event enable register %X", Event)); - } - else - { - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Disabled fixed event %X\n", Event)); - } - - (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); - return_ACPI_STATUS (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiRemoveFixedEventHandler) - - -/******************************************************************************* - * - * FUNCTION: AcpiInstallNotifyHandler - * - * PARAMETERS: Device - The device for which notifies will be handled - * HandlerType - The type of handler: - * ACPI_SYSTEM_NOTIFY: SystemHandler (00-7f) - * ACPI_DEVICE_NOTIFY: DriverHandler (80-ff) - * ACPI_ALL_NOTIFY: both system and device - * Handler - Address of the handler - * Context - Value passed to the handler on each GPE - * - * RETURN: Status - * - * DESCRIPTION: Install a handler for notifies on an ACPI device - * - ******************************************************************************/ - -ACPI_STATUS -AcpiInstallNotifyHandler ( - ACPI_HANDLE Device, - UINT32 HandlerType, - ACPI_NOTIFY_HANDLER Handler, - void *Context) -{ - ACPI_OPERAND_OBJECT *ObjDesc; - ACPI_OPERAND_OBJECT *NotifyObj; - ACPI_NAMESPACE_NODE *Node; - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (AcpiInstallNotifyHandler); - - - /* Parameter validation */ - - if ((!Device) || - (!Handler) || - (HandlerType > ACPI_MAX_NOTIFY_HANDLER_TYPE)) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Convert and validate the device handle */ - - Node = AcpiNsMapHandleToNode (Device); - if (!Node) - { - Status = AE_BAD_PARAMETER; - goto UnlockAndExit; - } - - /* - * Root Object: - * Registering a notify handler on the root object indicates that the - * caller wishes to receive notifications for all objects. Note that - * only one <external> global handler can be regsitered (per notify type). - */ - if (Device == ACPI_ROOT_OBJECT) - { - /* Make sure the handler is not already installed */ - - if (((HandlerType & ACPI_SYSTEM_NOTIFY) && - AcpiGbl_SystemNotify.Handler) || - ((HandlerType & ACPI_DEVICE_NOTIFY) && - AcpiGbl_DeviceNotify.Handler)) - { - Status = AE_ALREADY_EXISTS; - goto UnlockAndExit; - } - - if (HandlerType & ACPI_SYSTEM_NOTIFY) - { - AcpiGbl_SystemNotify.Node = Node; - AcpiGbl_SystemNotify.Handler = Handler; - AcpiGbl_SystemNotify.Context = Context; - } - - if (HandlerType & ACPI_DEVICE_NOTIFY) - { - AcpiGbl_DeviceNotify.Node = Node; - AcpiGbl_DeviceNotify.Handler = Handler; - AcpiGbl_DeviceNotify.Context = Context; - } - - /* Global notify handler installed */ - } - - /* - * All Other Objects: - * Caller will only receive notifications specific to the target object. - * Note that only certain object types can receive notifications. - */ - else - { - /* Notifies allowed on this object? */ - - if (!AcpiEvIsNotifyObject (Node)) - { - Status = AE_TYPE; - goto UnlockAndExit; - } - - /* Check for an existing internal object */ - - ObjDesc = AcpiNsGetAttachedObject (Node); - if (ObjDesc) - { - /* Object exists - make sure there's no handler */ - - if (((HandlerType & ACPI_SYSTEM_NOTIFY) && - ObjDesc->CommonNotify.SystemNotify) || - ((HandlerType & ACPI_DEVICE_NOTIFY) && - ObjDesc->CommonNotify.DeviceNotify)) - { - Status = AE_ALREADY_EXISTS; - goto UnlockAndExit; - } - } - else - { - /* Create a new object */ - - ObjDesc = AcpiUtCreateInternalObject (Node->Type); - if (!ObjDesc) - { - Status = AE_NO_MEMORY; - goto UnlockAndExit; - } - - /* Attach new object to the Node */ - - Status = AcpiNsAttachObject (Device, ObjDesc, Node->Type); - - /* Remove local reference to the object */ - - AcpiUtRemoveReference (ObjDesc); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - } - - /* Install the handler */ - - NotifyObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_NOTIFY); - if (!NotifyObj) - { - Status = AE_NO_MEMORY; - goto UnlockAndExit; - } - - NotifyObj->Notify.Node = Node; - NotifyObj->Notify.Handler = Handler; - NotifyObj->Notify.Context = Context; - - if (HandlerType & ACPI_SYSTEM_NOTIFY) - { - ObjDesc->CommonNotify.SystemNotify = NotifyObj; - } - - if (HandlerType & ACPI_DEVICE_NOTIFY) - { - ObjDesc->CommonNotify.DeviceNotify = NotifyObj; - } - - if (HandlerType == ACPI_ALL_NOTIFY) - { - /* Extra ref if installed in both */ - - AcpiUtAddReference (NotifyObj); - } - } - - -UnlockAndExit: - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiInstallNotifyHandler) - - -/******************************************************************************* - * - * FUNCTION: AcpiRemoveNotifyHandler - * - * PARAMETERS: Device - The device for which notifies will be handled - * HandlerType - The type of handler: - * ACPI_SYSTEM_NOTIFY: SystemHandler (00-7f) - * ACPI_DEVICE_NOTIFY: DriverHandler (80-ff) - * ACPI_ALL_NOTIFY: both system and device - * Handler - Address of the handler - * - * RETURN: Status - * - * DESCRIPTION: Remove a handler for notifies on an ACPI device - * - ******************************************************************************/ - -ACPI_STATUS -AcpiRemoveNotifyHandler ( - ACPI_HANDLE Device, - UINT32 HandlerType, - ACPI_NOTIFY_HANDLER Handler) -{ - ACPI_OPERAND_OBJECT *NotifyObj; - ACPI_OPERAND_OBJECT *ObjDesc; - ACPI_NAMESPACE_NODE *Node; - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (AcpiRemoveNotifyHandler); - - - /* Parameter validation */ - - if ((!Device) || - (!Handler) || - (HandlerType > ACPI_MAX_NOTIFY_HANDLER_TYPE)) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Convert and validate the device handle */ - - Node = AcpiNsMapHandleToNode (Device); - if (!Node) - { - Status = AE_BAD_PARAMETER; - goto UnlockAndExit; - } - - /* Root Object */ - - if (Device == ACPI_ROOT_OBJECT) - { - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "Removing notify handler for namespace root object\n")); - - if (((HandlerType & ACPI_SYSTEM_NOTIFY) && - !AcpiGbl_SystemNotify.Handler) || - ((HandlerType & ACPI_DEVICE_NOTIFY) && - !AcpiGbl_DeviceNotify.Handler)) - { - Status = AE_NOT_EXIST; - goto UnlockAndExit; - } - - if (HandlerType & ACPI_SYSTEM_NOTIFY) - { - AcpiGbl_SystemNotify.Node = NULL; - AcpiGbl_SystemNotify.Handler = NULL; - AcpiGbl_SystemNotify.Context = NULL; - } - - if (HandlerType & ACPI_DEVICE_NOTIFY) - { - AcpiGbl_DeviceNotify.Node = NULL; - AcpiGbl_DeviceNotify.Handler = NULL; - AcpiGbl_DeviceNotify.Context = NULL; - } - } - - /* All Other Objects */ - - else - { - /* Notifies allowed on this object? */ - - if (!AcpiEvIsNotifyObject (Node)) - { - Status = AE_TYPE; - goto UnlockAndExit; - } - - /* Check for an existing internal object */ - - ObjDesc = AcpiNsGetAttachedObject (Node); - if (!ObjDesc) - { - Status = AE_NOT_EXIST; - goto UnlockAndExit; - } - - /* Object exists - make sure there's an existing handler */ - - if (HandlerType & ACPI_SYSTEM_NOTIFY) - { - NotifyObj = ObjDesc->CommonNotify.SystemNotify; - if (!NotifyObj) - { - Status = AE_NOT_EXIST; - goto UnlockAndExit; - } - - if (NotifyObj->Notify.Handler != Handler) - { - Status = AE_BAD_PARAMETER; - goto UnlockAndExit; - } - - /* Remove the handler */ - - ObjDesc->CommonNotify.SystemNotify = NULL; - AcpiUtRemoveReference (NotifyObj); - } - - if (HandlerType & ACPI_DEVICE_NOTIFY) - { - NotifyObj = ObjDesc->CommonNotify.DeviceNotify; - if (!NotifyObj) - { - Status = AE_NOT_EXIST; - goto UnlockAndExit; - } - - if (NotifyObj->Notify.Handler != Handler) - { - Status = AE_BAD_PARAMETER; - goto UnlockAndExit; - } - - /* Remove the handler */ - - ObjDesc->CommonNotify.DeviceNotify = NULL; - AcpiUtRemoveReference (NotifyObj); - } - } - - -UnlockAndExit: - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiRemoveNotifyHandler) - - -/******************************************************************************* - * - * FUNCTION: AcpiInstallGpeHandler - * - * PARAMETERS: GpeDevice - Namespace node for the GPE (NULL for FADT - * defined GPEs) - * GpeNumber - The GPE number within the GPE block - * Type - Whether this GPE should be treated as an - * edge- or level-triggered interrupt. - * Address - Address of the handler - * Context - Value passed to the handler on each GPE - * - * RETURN: Status - * - * DESCRIPTION: Install a handler for a General Purpose Event. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiInstallGpeHandler ( - ACPI_HANDLE GpeDevice, - UINT32 GpeNumber, - UINT32 Type, - ACPI_EVENT_HANDLER Address, - void *Context) -{ - ACPI_GPE_EVENT_INFO *GpeEventInfo; - ACPI_HANDLER_INFO *Handler; - ACPI_STATUS Status; - ACPI_CPU_FLAGS Flags; - - - ACPI_FUNCTION_TRACE (AcpiInstallGpeHandler); - - - /* Parameter validation */ - - if ((!Address) || (Type > ACPI_GPE_XRUPT_TYPE_MASK)) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - 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; - } - - /* Make sure that there isn't a handler there already */ - - if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) == ACPI_GPE_DISPATCH_HANDLER) - { - Status = AE_ALREADY_EXISTS; - goto UnlockAndExit; - } - - /* Allocate and init handler object */ - - Handler = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_HANDLER_INFO)); - if (!Handler) - { - Status = AE_NO_MEMORY; - goto UnlockAndExit; - } - - Handler->Address = Address; - Handler->Context = Context; - Handler->MethodNode = GpeEventInfo->Dispatch.MethodNode; - - /* Disable the GPE before installing the handler */ - - Status = AcpiEvDisableGpe (GpeEventInfo); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - /* Install the handler */ - - Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); - GpeEventInfo->Dispatch.Handler = Handler; - - /* Setup up dispatch flags to indicate handler (vs. method) */ - - GpeEventInfo->Flags &= ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK); /* Clear bits */ - GpeEventInfo->Flags |= (UINT8) (Type | ACPI_GPE_DISPATCH_HANDLER); - - AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); - - -UnlockAndExit: - (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); - return_ACPI_STATUS (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiInstallGpeHandler) - - -/******************************************************************************* - * - * FUNCTION: AcpiRemoveGpeHandler - * - * PARAMETERS: GpeDevice - Namespace node for the GPE (NULL for FADT - * defined GPEs) - * GpeNumber - The event to remove a handler - * Address - Address of the handler - * - * RETURN: Status - * - * DESCRIPTION: Remove a handler for a General Purpose AcpiEvent. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiRemoveGpeHandler ( - ACPI_HANDLE GpeDevice, - UINT32 GpeNumber, - ACPI_EVENT_HANDLER Address) -{ - ACPI_GPE_EVENT_INFO *GpeEventInfo; - ACPI_HANDLER_INFO *Handler; - ACPI_STATUS Status; - ACPI_CPU_FLAGS Flags; - - - ACPI_FUNCTION_TRACE (AcpiRemoveGpeHandler); - - - /* Parameter validation */ - - if (!Address) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - 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; - } - - /* Make sure that a handler is indeed installed */ - - if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) != ACPI_GPE_DISPATCH_HANDLER) - { - Status = AE_NOT_EXIST; - goto UnlockAndExit; - } - - /* Make sure that the installed handler is the same */ - - if (GpeEventInfo->Dispatch.Handler->Address != Address) - { - Status = AE_BAD_PARAMETER; - goto UnlockAndExit; - } - - /* Disable the GPE before removing the handler */ - - Status = AcpiEvDisableGpe (GpeEventInfo); - if (ACPI_FAILURE (Status)) - { - goto UnlockAndExit; - } - - /* Remove the handler */ - - Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); - Handler = GpeEventInfo->Dispatch.Handler; - - /* Restore Method node (if any), set dispatch flags */ - - GpeEventInfo->Dispatch.MethodNode = Handler->MethodNode; - GpeEventInfo->Flags &= ~ACPI_GPE_DISPATCH_MASK; /* Clear bits */ - if (Handler->MethodNode) - { - GpeEventInfo->Flags |= ACPI_GPE_DISPATCH_METHOD; - } - AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); - - /* Now we can free the handler object */ - - ACPI_FREE (Handler); - - -UnlockAndExit: - (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); - return_ACPI_STATUS (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiRemoveGpeHandler) - - -/******************************************************************************* - * - * FUNCTION: AcpiAcquireGlobalLock - * - * PARAMETERS: Timeout - How long the caller is willing to wait - * Handle - Where the handle to the lock is returned - * (if acquired) - * - * RETURN: Status - * - * DESCRIPTION: Acquire the ACPI Global Lock - * - * Note: Allows callers with the same thread ID to acquire the global lock - * multiple times. In other words, externally, the behavior of the global lock - * is identical to an AML mutex. On the first acquire, a new handle is - * returned. On any subsequent calls to acquire by the same thread, the same - * handle is returned. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiAcquireGlobalLock ( - UINT16 Timeout, - UINT32 *Handle) -{ - ACPI_STATUS Status; - - - if (!Handle) - { - return (AE_BAD_PARAMETER); - } - - /* Must lock interpreter to prevent race conditions */ - - AcpiExEnterInterpreter (); - - Status = AcpiExAcquireMutexObject (Timeout, - AcpiGbl_GlobalLockMutex, AcpiOsGetThreadId ()); - - if (ACPI_SUCCESS (Status)) - { - /* Return the global lock handle (updated in AcpiEvAcquireGlobalLock) */ - - *Handle = AcpiGbl_GlobalLockHandle; - } - - AcpiExExitInterpreter (); - return (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiAcquireGlobalLock) - - -/******************************************************************************* - * - * FUNCTION: AcpiReleaseGlobalLock - * - * PARAMETERS: Handle - Returned from AcpiAcquireGlobalLock - * - * RETURN: Status - * - * DESCRIPTION: Release the ACPI Global Lock. The handle must be valid. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiReleaseGlobalLock ( - UINT32 Handle) -{ - ACPI_STATUS Status; - - - if (!Handle || (Handle != AcpiGbl_GlobalLockHandle)) - { - return (AE_NOT_ACQUIRED); - } - - Status = AcpiExReleaseMutexObject (AcpiGbl_GlobalLockMutex); - return (Status); -} - -ACPI_EXPORT_SYMBOL (AcpiReleaseGlobalLock) - |
