ACPI_STATUS
AcpiDisableGpe (
ACPI_HANDLE GpeDevice,
UINT32 GpeNumber)
{
ACPI_STATUS Status = AE_BAD_PARAMETER;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_CPU_FLAGS Flags;
ACPI_FUNCTION_TRACE (AcpiDisableGpe);
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
/* Ensure that we have a valid GPE number */
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
if (GpeEventInfo)
{
Status = AcpiEvRemoveGpeReference (GpeEventInfo);
}
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
return_ACPI_STATUS (Status);
}
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_STATUS
AcpiMarkGpeForWake (
ACPI_HANDLE GpeDevice,
UINT32 GpeNumber)
{
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_STATUS Status = AE_BAD_PARAMETER;
ACPI_CPU_FLAGS Flags;
ACPI_FUNCTION_TRACE (AcpiMarkGpeForWake);
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
/* Ensure that we have a valid GPE number */
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
if (GpeEventInfo)
{
/* Mark the GPE as a possible wake event */
GpeEventInfo->Flags |= ACPI_GPE_CAN_WAKE;
Status = AE_OK;
}
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
return_ACPI_STATUS (Status);
}
void
AcpiDbGenerateGpe (
char *GpeArg,
char *BlockArg)
{
UINT32 BlockNumber = 0;
UINT32 GpeNumber;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
GpeNumber = ACPI_STRTOUL (GpeArg, NULL, 0);
/*
* If no block arg, or block arg == 0 or 1, use the FADT-defined
* GPE blocks.
*/
if (BlockArg)
{
BlockNumber = ACPI_STRTOUL (BlockArg, NULL, 0);
if (BlockNumber == 1)
{
BlockNumber = 0;
}
}
GpeEventInfo = AcpiEvGetGpeEventInfo (ACPI_TO_POINTER (BlockNumber),
GpeNumber);
if (!GpeEventInfo)
{
AcpiOsPrintf ("Invalid GPE\n");
return;
}
(void) AcpiEvGpeDispatch (NULL, GpeEventInfo, GpeNumber);
}
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_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_STATUS
AcpiGpeWakeup (
ACPI_HANDLE GpeDevice,
UINT32 GpeNumber,
UINT8 Action)
{
ACPI_STATUS Status = AE_OK;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
ACPI_CPU_FLAGS Flags;
UINT32 RegisterBit;
ACPI_FUNCTION_TRACE (AcpiGpeWakeup);
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
/* Ensure that we have a valid GPE number */
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
if (!GpeEventInfo)
{
Status = AE_BAD_PARAMETER;
goto UnlockAndExit;
}
GpeRegisterInfo = GpeEventInfo->RegisterInfo;
if (!GpeRegisterInfo)
{
Status = AE_NOT_EXIST;
goto UnlockAndExit;
}
RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo, GpeRegisterInfo);
/* Perform the action */
switch (Action)
{
case ACPI_GPE_ENABLE:
ACPI_SET_BIT (GpeRegisterInfo->EnableForWake, (UINT8) RegisterBit);
break;
case ACPI_GPE_DISABLE:
ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForWake, (UINT8) RegisterBit);
break;
default:
ACPI_ERROR ((AE_INFO, "%u, Invalid action", Action));
Status = AE_BAD_PARAMETER;
break;
}
UnlockAndExit:
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiClearEvent (
UINT32 Event,
UINT32 Type)
{
ACPI_STATUS Status = AE_OK;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_FUNCTION_TRACE ("AcpiClearEvent");
/* The Type must be either Fixed Event or GPE */
switch (Type)
{
case ACPI_EVENT_FIXED:
/* 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, ACPI_MTX_LOCK);
break;
case ACPI_EVENT_GPE:
/* Ensure that we have a valid GPE number */
GpeEventInfo = AcpiEvGetGpeEventInfo (Event);
if (!GpeEventInfo)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
Status = AcpiHwClearGpe (GpeEventInfo);
break;
default:
Status = AE_BAD_PARAMETER;
}
return_ACPI_STATUS (Status);
}
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 = AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_ENABLE);
GpeEventInfo->DisableForDispatch = FALSE;
break;
case ACPI_GPE_DISABLE:
Status = AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_DISABLE);
GpeEventInfo->DisableForDispatch = TRUE;
break;
default:
Status = AE_BAD_PARAMETER;
break;
}
UnlockAndExit:
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiDisableGpe (
ACPI_HANDLE GpeDevice,
UINT32 GpeNumber)
{
ACPI_STATUS Status = AE_OK;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_CPU_FLAGS Flags;
ACPI_FUNCTION_TRACE (AcpiDisableGpe);
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 (!GpeEventInfo->RuntimeCount)
{
Status = AE_LIMIT; /* There are no references to remove */
goto UnlockAndExit;
}
GpeEventInfo->RuntimeCount--;
if (!GpeEventInfo->RuntimeCount)
{
Status = AcpiEvUpdateGpeEnableMask (GpeEventInfo);
if (ACPI_SUCCESS (Status))
{
Status = AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_DISABLE);
}
if (ACPI_FAILURE (Status))
{
GpeEventInfo->RuntimeCount++;
}
}
UnlockAndExit:
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiEnableGpe (
ACPI_HANDLE GpeDevice,
UINT32 GpeNumber)
{
ACPI_STATUS Status = AE_OK;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_CPU_FLAGS Flags;
ACPI_FUNCTION_TRACE (AcpiEnableGpe);
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 (GpeEventInfo->RuntimeCount == ACPI_UINT8_MAX)
{
Status = AE_LIMIT; /* Too many references */
goto UnlockAndExit;
}
GpeEventInfo->RuntimeCount++;
if (GpeEventInfo->RuntimeCount == 1)
{
Status = AcpiEvUpdateGpeEnableMask (GpeEventInfo);
if (ACPI_SUCCESS (Status))
{
Status = AcpiEvEnableGpe (GpeEventInfo);
}
if (ACPI_FAILURE (Status))
{
GpeEventInfo->RuntimeCount--;
}
}
UnlockAndExit:
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiEnableGpe (
ACPI_HANDLE GpeDevice,
UINT32 GpeNumber)
{
ACPI_STATUS Status = AE_BAD_PARAMETER;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_CPU_FLAGS Flags;
ACPI_FUNCTION_TRACE (AcpiEnableGpe);
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
/*
* Ensure that we have a valid GPE number and that there is some way
* of handling the GPE (handler or a GPE method). In other words, we
* won't allow a valid GPE to be enabled if there is no way to handle it.
*/
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
if (GpeEventInfo)
{
if (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) !=
ACPI_GPE_DISPATCH_NONE)
{
Status = AcpiEvAddGpeReference (GpeEventInfo);
if (ACPI_SUCCESS (Status) &&
ACPI_GPE_IS_POLLING_NEEDED (GpeEventInfo))
{
/* Poll edge-triggered GPEs to handle existing events */
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
(void) AcpiEvDetectGpe (
GpeDevice, GpeEventInfo, GpeNumber);
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
}
}
else
{
Status = AE_NO_HANDLER;
}
}
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
return_ACPI_STATUS (Status);
}
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_STATUS
AcpiEnableGpe (
ACPI_HANDLE GpeDevice,
UINT32 GpeNumber)
{
ACPI_STATUS Status = AE_BAD_PARAMETER;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_CPU_FLAGS Flags;
ACPI_FUNCTION_TRACE (AcpiEnableGpe);
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
/*
* Ensure that we have a valid GPE number and that there is some way
* of handling the GPE (handler or a GPE method). In other words, we
* won't allow a valid GPE to be enabled if there is no way to handle it.
*/
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
if (GpeEventInfo)
{
if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) !=
ACPI_GPE_DISPATCH_NONE)
{
Status = AcpiEvAddGpeReference (GpeEventInfo);
}
else
{
Status = AE_NO_HANDLER;
}
}
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
return_ACPI_STATUS (Status);
}
void
AcpiDbGenerateGpe (
char *GpeArg,
char *BlockArg)
{
UINT32 BlockNumber;
UINT32 GpeNumber;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
GpeNumber = ACPI_STRTOUL (GpeArg, NULL, 0);
BlockNumber = ACPI_STRTOUL (BlockArg, NULL, 0);
GpeEventInfo = AcpiEvGetGpeEventInfo (ACPI_TO_POINTER (BlockNumber),
GpeNumber);
if (!GpeEventInfo)
{
AcpiOsPrintf ("Invalid GPE\n");
return;
}
(void) AcpiEvGpeDispatch (NULL, GpeEventInfo, GpeNumber);
}
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);
}
static ACPI_STATUS
AcpiEvInstallGpeHandler (
ACPI_HANDLE GpeDevice,
UINT32 GpeNumber,
UINT32 Type,
BOOLEAN IsRawHandler,
ACPI_GPE_HANDLER Address,
void *Context)
{
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_GPE_HANDLER_INFO *Handler;
ACPI_STATUS Status;
ACPI_CPU_FLAGS Flags;
ACPI_FUNCTION_TRACE (EvInstallGpeHandler);
/* 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);
}
/* Allocate and init handler object (before lock) */
Handler = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_HANDLER_INFO));
if (!Handler)
{
Status = AE_NO_MEMORY;
goto UnlockAndExit;
}
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
/* Ensure that we have a valid GPE number */
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
if (!GpeEventInfo)
{
Status = AE_BAD_PARAMETER;
goto FreeAndExit;
}
/* Make sure that there isn't a handler there already */
if ((ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) ==
ACPI_GPE_DISPATCH_HANDLER) ||
(ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) ==
ACPI_GPE_DISPATCH_RAW_HANDLER))
{
Status = AE_ALREADY_EXISTS;
goto FreeAndExit;
}
Handler->Address = Address;
Handler->Context = Context;
Handler->MethodNode = GpeEventInfo->Dispatch.MethodNode;
Handler->OriginalFlags = (UINT8) (GpeEventInfo->Flags &
(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK));
/*
* If the GPE is associated with a method, it may have been enabled
* automatically during initialization, in which case it has to be
* disabled now to avoid spurious execution of the handler.
*/
if (((ACPI_GPE_DISPATCH_TYPE (Handler->OriginalFlags) ==
ACPI_GPE_DISPATCH_METHOD) ||
(ACPI_GPE_DISPATCH_TYPE (Handler->OriginalFlags) ==
ACPI_GPE_DISPATCH_NOTIFY)) &&
GpeEventInfo->RuntimeCount)
{
Handler->OriginallyEnabled = TRUE;
(void) AcpiEvRemoveGpeReference (GpeEventInfo);
/* Sanity check of original type against new type */
if (Type != (UINT32) (GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK))
{
ACPI_WARNING ((AE_INFO, "GPE type mismatch (level/edge)"));
}
}
/* Install the handler */
GpeEventInfo->Dispatch.Handler = Handler;
/* Setup up dispatch flags to indicate handler (vs. method/notify) */
GpeEventInfo->Flags &= ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
GpeEventInfo->Flags |= (UINT8) (Type | (IsRawHandler ?
ACPI_GPE_DISPATCH_RAW_HANDLER : ACPI_GPE_DISPATCH_HANDLER));
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
UnlockAndExit:
(void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
return_ACPI_STATUS (Status);
FreeAndExit:
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
ACPI_FREE (Handler);
goto UnlockAndExit;
}
ACPI_STATUS
AcpiRemoveGpeHandler (
ACPI_HANDLE GpeDevice,
UINT32 GpeNumber,
ACPI_GPE_HANDLER Address)
{
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_GPE_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);
}
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
/* 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 ((ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) !=
ACPI_GPE_DISPATCH_HANDLER) &&
(ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) !=
ACPI_GPE_DISPATCH_RAW_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;
}
/* Remove the handler */
Handler = GpeEventInfo->Dispatch.Handler;
GpeEventInfo->Dispatch.Handler = NULL;
/* Restore Method node (if any), set dispatch flags */
GpeEventInfo->Dispatch.MethodNode = Handler->MethodNode;
GpeEventInfo->Flags &=
~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
GpeEventInfo->Flags |= Handler->OriginalFlags;
/*
* If the GPE was previously associated with a method and it was
* enabled, it should be enabled at this point to restore the
* post-initialization configuration.
*/
if (((ACPI_GPE_DISPATCH_TYPE (Handler->OriginalFlags) ==
ACPI_GPE_DISPATCH_METHOD) ||
(ACPI_GPE_DISPATCH_TYPE (Handler->OriginalFlags) ==
ACPI_GPE_DISPATCH_NOTIFY)) &&
Handler->OriginallyEnabled)
{
(void) AcpiEvAddGpeReference (GpeEventInfo);
}
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
(void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
/* Make sure all deferred GPE tasks are completed */
AcpiOsWaitEventsComplete ();
/* Now we can free the handler object */
ACPI_FREE (Handler);
return_ACPI_STATUS (Status);
UnlockAndExit:
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
(void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
return_ACPI_STATUS (Status);
}
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_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_STATUS
AcpiEvMatchPrwAndGpe (
ACPI_HANDLE ObjHandle,
UINT32 Level,
void *Context,
void **ReturnValue)
{
ACPI_GPE_WALK_INFO *WalkInfo = ACPI_CAST_PTR (ACPI_GPE_WALK_INFO, Context);
ACPI_NAMESPACE_NODE *GpeDevice;
ACPI_GPE_BLOCK_INFO *GpeBlock;
ACPI_NAMESPACE_NODE *TargetGpeDevice;
ACPI_NAMESPACE_NODE *PrwNode;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_OPERAND_OBJECT *PkgDesc;
ACPI_OPERAND_OBJECT *ObjDesc;
UINT32 GpeNumber;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (EvMatchPrwAndGpe);
/* Check for a _PRW method under this device */
Status = AcpiNsGetNode (ObjHandle, METHOD_NAME__PRW,
ACPI_NS_NO_UPSEARCH, &PrwNode);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (AE_OK);
}
/* Check if requested OwnerId matches this OwnerId */
if ((WalkInfo->ExecuteByOwnerId) &&
(PrwNode->OwnerId != WalkInfo->OwnerId))
{
return_ACPI_STATUS (AE_OK);
}
/* Execute the _PRW */
Status = AcpiUtEvaluateObject (PrwNode, NULL,
ACPI_BTYPE_PACKAGE, &PkgDesc);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (AE_OK);
}
/* The returned _PRW package must have at least two elements */
if (PkgDesc->Package.Count < 2)
{
goto Cleanup;
}
/* Extract pointers from the input context */
GpeDevice = WalkInfo->GpeDevice;
GpeBlock = WalkInfo->GpeBlock;
/*
* The _PRW object must return a package, we are only interested
* in the first element
*/
ObjDesc = PkgDesc->Package.Elements[0];
if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER)
{
/* Use FADT-defined GPE device (from definition of _PRW) */
TargetGpeDevice = NULL;
if (GpeDevice)
{
TargetGpeDevice = AcpiGbl_FadtGpeDevice;
}
/* Integer is the GPE number in the FADT described GPE blocks */
GpeNumber = (UINT32) ObjDesc->Integer.Value;
}
else if (ObjDesc->Common.Type == ACPI_TYPE_PACKAGE)
{
/* Package contains a GPE reference and GPE number within a GPE block */
if ((ObjDesc->Package.Count < 2) ||
((ObjDesc->Package.Elements[0])->Common.Type !=
ACPI_TYPE_LOCAL_REFERENCE) ||
((ObjDesc->Package.Elements[1])->Common.Type !=
ACPI_TYPE_INTEGER))
{
goto Cleanup;
}
/* Get GPE block reference and decode */
TargetGpeDevice = ObjDesc->Package.Elements[0]->Reference.Node;
GpeNumber = (UINT32) ObjDesc->Package.Elements[1]->Integer.Value;
}
else
{
/* Unknown type, just ignore it */
goto Cleanup;
}
/* Get the GpeEventInfo for this GPE */
if (GpeDevice)
{
/*
* Is this GPE within this block?
*
* TRUE if and only if these conditions are true:
* 1) The GPE devices match.
* 2) The GPE index(number) is within the range of the Gpe Block
* associated with the GPE device.
*/
if (GpeDevice != TargetGpeDevice)
{
goto Cleanup;
}
GpeEventInfo = AcpiEvLowGetGpeInfo (GpeNumber, GpeBlock);
}
else
{
/* GpeDevice is NULL, just match the TargetDevice and GpeNumber */
GpeEventInfo = AcpiEvGetGpeEventInfo (TargetGpeDevice, GpeNumber);
}
if (GpeEventInfo)
{
if (!(GpeEventInfo->Flags & ACPI_GPE_CAN_WAKE))
{
/* This GPE can wake the system */
GpeEventInfo->Flags |= ACPI_GPE_CAN_WAKE;
WalkInfo->Count++;
}
}
Cleanup:
AcpiUtRemoveReference (PkgDesc);
return_ACPI_STATUS (AE_OK);
}
ACPI_STATUS
AcpiDisableEvent (
UINT32 Event,
UINT32 Type,
UINT32 Flags)
{
ACPI_STATUS Status = AE_OK;
UINT32 Value;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_FUNCTION_TRACE ("AcpiDisableEvent");
/* The Type must be either Fixed Event or GPE */
switch (Type)
{
case ACPI_EVENT_FIXED:
/* 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, ACPI_MTX_LOCK);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
&Value, ACPI_MTX_LOCK);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
if (Value != 0)
{
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Could not disable %s events\n", AcpiUtGetEventName (Event)));
return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
}
break;
case ACPI_EVENT_GPE:
/* Ensure that we have a valid GPE number */
GpeEventInfo = AcpiEvGetGpeEventInfo (Event);
if (!GpeEventInfo)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/*
* Only disable the requested GPE number for wake if specified.
* Otherwise, turn it totally off
*/
if (Flags & ACPI_EVENT_WAKE_DISABLE)
{
AcpiHwDisableGpeForWakeup (GpeEventInfo);
}
else
{
Status = AcpiHwDisableGpe (GpeEventInfo);
}
break;
default:
Status = AE_BAD_PARAMETER;
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiGetEventStatus (
UINT32 Event,
UINT32 Type,
ACPI_EVENT_STATUS *EventStatus)
{
ACPI_STATUS Status = AE_OK;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_FUNCTION_TRACE ("AcpiGetEventStatus");
if (!EventStatus)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* The Type must be either Fixed Event or GPE */
switch (Type)
{
case ACPI_EVENT_FIXED:
/* 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, ACPI_MTX_LOCK);
break;
case ACPI_EVENT_GPE:
/* Ensure that we have a valid GPE number */
GpeEventInfo = AcpiEvGetGpeEventInfo (Event);
if (!GpeEventInfo)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Obtain status on the requested GPE number */
Status = AcpiHwGetGpeStatus (Event, EventStatus);
break;
default:
Status = AE_BAD_PARAMETER;
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiSetupGpeForWake (
ACPI_HANDLE WakeDevice,
ACPI_HANDLE GpeDevice,
UINT32 GpeNumber)
{
ACPI_STATUS Status;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_NAMESPACE_NODE *DeviceNode;
ACPI_GPE_NOTIFY_INFO *Notify;
ACPI_GPE_NOTIFY_INFO *NewNotify;
ACPI_CPU_FLAGS Flags;
ACPI_FUNCTION_TRACE (AcpiSetupGpeForWake);
/* Parameter Validation */
if (!WakeDevice)
{
/*
* By forcing WakeDevice to be valid, we automatically enable the
* implicit notify feature on all hosts.
*/
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Handle root object case */
if (WakeDevice == ACPI_ROOT_OBJECT)
{
DeviceNode = AcpiGbl_RootNode;
}
else
{
DeviceNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, WakeDevice);
}
/* Validate WakeDevice is of type Device */
if (DeviceNode->Type != ACPI_TYPE_DEVICE)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/*
* Allocate a new notify object up front, in case it is needed.
* Memory allocation while holding a spinlock is a big no-no
* on some hosts.
*/
NewNotify = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_NOTIFY_INFO));
if (!NewNotify)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
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 there is no method or handler for this GPE, then the
* WakeDevice will be notified whenever this GPE fires. This is
* known as an "implicit notify". Note: The GPE is assumed to be
* level-triggered (for windows compatibility).
*/
if (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) ==
ACPI_GPE_DISPATCH_NONE)
{
/*
* This is the first device for implicit notify on this GPE.
* Just set the flags here, and enter the NOTIFY block below.
*/
GpeEventInfo->Flags =
(ACPI_GPE_DISPATCH_NOTIFY | ACPI_GPE_LEVEL_TRIGGERED);
}
/*
* If we already have an implicit notify on this GPE, add
* this device to the notify list.
*/
if (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) ==
ACPI_GPE_DISPATCH_NOTIFY)
{
/* Ensure that the device is not already in the list */
Notify = GpeEventInfo->Dispatch.NotifyList;
while (Notify)
{
if (Notify->DeviceNode == DeviceNode)
{
Status = AE_ALREADY_EXISTS;
goto UnlockAndExit;
}
Notify = Notify->Next;
}
/* Add this device to the notify list for this GPE */
NewNotify->DeviceNode = DeviceNode;
NewNotify->Next = GpeEventInfo->Dispatch.NotifyList;
GpeEventInfo->Dispatch.NotifyList = NewNotify;
NewNotify = NULL;
}
/* Mark the GPE as a possible wake event */
GpeEventInfo->Flags |= ACPI_GPE_CAN_WAKE;
Status = AE_OK;
UnlockAndExit:
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
/* Delete the notify object if it was not used above */
if (NewNotify)
{
ACPI_FREE (NewNotify);
}
return_ACPI_STATUS (Status);
}
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_STATUS
AcpiSetupGpeForWake (
ACPI_HANDLE WakeDevice,
ACPI_HANDLE GpeDevice,
UINT32 GpeNumber)
{
ACPI_STATUS Status = AE_BAD_PARAMETER;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_NAMESPACE_NODE *DeviceNode;
ACPI_CPU_FLAGS Flags;
ACPI_FUNCTION_TRACE (AcpiSetupGpeForWake);
/* Parameter Validation */
if (!WakeDevice)
{
/*
* By forcing WakeDevice to be valid, we automatically enable the
* implicit notify feature on all hosts.
*/
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Validate WakeDevice is of type Device */
DeviceNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, WakeDevice);
if (DeviceNode->Type != ACPI_TYPE_DEVICE)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
/* Ensure that we have a valid GPE number */
GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
if (GpeEventInfo)
{
/*
* If there is no method or handler for this GPE, then the
* WakeDevice will be notified whenever this GPE fires (aka
* "implicit notify") Note: The GPE is assumed to be
* level-triggered (for windows compatibility).
*/
if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) ==
ACPI_GPE_DISPATCH_NONE)
{
GpeEventInfo->Flags =
(ACPI_GPE_DISPATCH_NOTIFY | ACPI_GPE_LEVEL_TRIGGERED);
GpeEventInfo->Dispatch.DeviceNode = DeviceNode;
}
GpeEventInfo->Flags |= ACPI_GPE_CAN_WAKE;
Status = AE_OK;
}
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiEnableEvent (
UINT32 Event,
UINT32 Type,
UINT32 Flags)
{
ACPI_STATUS Status = AE_OK;
UINT32 Value;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_FUNCTION_TRACE ("AcpiEnableEvent");
/* The Type must be either Fixed Event or GPE */
switch (Type)
{
case ACPI_EVENT_FIXED:
/* 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, ACPI_MTX_LOCK);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Make sure that the hardware responded */
Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
&Value, ACPI_MTX_LOCK);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
if (Value != 1)
{
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Could not enable %s event\n", AcpiUtGetEventName (Event)));
return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
}
break;
case ACPI_EVENT_GPE:
/* Ensure that we have a valid GPE number */
GpeEventInfo = AcpiEvGetGpeEventInfo (Event);
if (!GpeEventInfo)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Enable the requested GPE number */
Status = AcpiHwEnableGpe (GpeEventInfo);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
if (Flags & ACPI_EVENT_WAKE_ENABLE)
{
AcpiHwEnableGpeForWakeup (GpeEventInfo);
}
break;
default:
Status = AE_BAD_PARAMETER;
}
return_ACPI_STATUS (Status);
}
