ACPI_STATUS
AcpiEvUpdateGpeEnableMask (
ACPI_GPE_EVENT_INFO *GpeEventInfo)
{
ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
UINT32 RegisterBit;
ACPI_FUNCTION_TRACE (EvUpdateGpeEnableMask);
GpeRegisterInfo = GpeEventInfo->RegisterInfo;
if (!GpeRegisterInfo)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo);
/* Clear the run bit up front */
ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForRun, RegisterBit);
/* Set the mask bit only if there are references to this GPE */
if (GpeEventInfo->RuntimeCount)
{
ACPI_SET_BIT (GpeRegisterInfo->EnableForRun, (UINT8) RegisterBit);
}
GpeRegisterInfo->EnableMask = GpeRegisterInfo->EnableForRun;
return_ACPI_STATUS (AE_OK);
}
ACPI_STATUS
AcpiHwGetGpeStatus (
ACPI_GPE_EVENT_INFO *GpeEventInfo,
ACPI_EVENT_STATUS *EventStatus)
{
UINT32 InByte;
UINT32 RegisterBit;
ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
ACPI_EVENT_STATUS LocalEventStatus = 0;
ACPI_STATUS Status;
ACPI_FUNCTION_ENTRY ();
if (!EventStatus)
{
return (AE_BAD_PARAMETER);
}
/* Get the info block for the entire GPE register */
GpeRegisterInfo = GpeEventInfo->RegisterInfo;
/* Get the register bitmask for this GPE */
RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo, GpeRegisterInfo);
/* GPE currently enabled? (enabled for runtime?) */
if (RegisterBit & GpeRegisterInfo->EnableForRun)
{
LocalEventStatus |= ACPI_EVENT_FLAG_ENABLED;
}
/* GPE enabled for wake? */
if (RegisterBit & GpeRegisterInfo->EnableForWake)
{
LocalEventStatus |= ACPI_EVENT_FLAG_WAKE_ENABLED;
}
/* GPE currently active (status bit == 1)? */
Status = AcpiHwRead (&InByte, &GpeRegisterInfo->StatusAddress);
if (ACPI_FAILURE (Status))
{
return (Status);
}
if (RegisterBit & InByte)
{
LocalEventStatus |= ACPI_EVENT_FLAG_SET;
}
/* Set return value */
(*EventStatus) = LocalEventStatus;
return (AE_OK);
}
ACPI_STATUS
AcpiHwClearGpe (
ACPI_GPE_EVENT_INFO *GpeEventInfo)
{
ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
ACPI_STATUS Status;
UINT32 RegisterBit;
ACPI_FUNCTION_ENTRY ();
/* Get the info block for the entire GPE register */
GpeRegisterInfo = GpeEventInfo->RegisterInfo;
if (!GpeRegisterInfo)
{
return (AE_NOT_EXIST);
}
/*
* Write a one to the appropriate bit in the status register to
* clear this GPE.
*/
RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo, GpeRegisterInfo);
Status = AcpiHwWrite (RegisterBit,
&GpeRegisterInfo->StatusAddress);
return (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
AcpiEvMaskGpe (
ACPI_GPE_EVENT_INFO *GpeEventInfo,
BOOLEAN IsMasked)
{
ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
UINT32 RegisterBit;
ACPI_FUNCTION_TRACE (EvMaskGpe);
GpeRegisterInfo = GpeEventInfo->RegisterInfo;
if (!GpeRegisterInfo)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo);
/* Perform the action */
if (IsMasked)
{
if (RegisterBit & GpeRegisterInfo->MaskForRun)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
(void) AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_DISABLE);
ACPI_SET_BIT (GpeRegisterInfo->MaskForRun, (UINT8) RegisterBit);
}
else
{
if (!(RegisterBit & GpeRegisterInfo->MaskForRun))
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
ACPI_CLEAR_BIT (GpeRegisterInfo->MaskForRun, (UINT8) RegisterBit);
if (GpeEventInfo->RuntimeCount &&
!GpeEventInfo->DisableForDispatch)
{
(void) AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_ENABLE);
}
}
return_ACPI_STATUS (AE_OK);
}
ACPI_STATUS
AcpiHwLowSetGpe (
ACPI_GPE_EVENT_INFO *GpeEventInfo,
UINT32 Action)
{
ACPI_GPE_REGISTER_INFO *GpeRegisterInfo;
ACPI_STATUS Status;
UINT32 EnableMask;
UINT32 RegisterBit;
ACPI_FUNCTION_ENTRY ();
/* Get the info block for the entire GPE register */
GpeRegisterInfo = GpeEventInfo->RegisterInfo;
if (!GpeRegisterInfo)
{
return (AE_NOT_EXIST);
}
/* Get current value of the enable register that contains this GPE */
Status = AcpiHwRead (&EnableMask, &GpeRegisterInfo->EnableAddress);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/* Set or clear just the bit that corresponds to this GPE */
RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo, GpeRegisterInfo);
switch (Action)
{
case ACPI_GPE_CONDITIONAL_ENABLE:
/* Only enable if the EnableForRun bit is set */
if (!(RegisterBit & GpeRegisterInfo->EnableForRun))
{
return (AE_BAD_PARAMETER);
}
/*lint -fallthrough */
case ACPI_GPE_ENABLE:
ACPI_SET_BIT (EnableMask, RegisterBit);
break;
case ACPI_GPE_DISABLE:
ACPI_CLEAR_BIT (EnableMask, RegisterBit);
break;
default:
ACPI_ERROR ((AE_INFO, "Invalid GPE Action, %u\n", Action));
return (AE_BAD_PARAMETER);
}
/* Write the updated enable mask */
Status = AcpiHwWrite (EnableMask, &GpeRegisterInfo->EnableAddress);
return (Status);
}
