IMG_VOID SGXTestActivePowerEvent (PVRSRV_DEVICE_NODE *psDeviceNode,
IMG_UINT32 ui32CallerID)
{
PVRSRV_ERROR eError = PVRSRV_OK;
PVRSRV_SGXDEV_INFO *psDevInfo = psDeviceNode->pvDevice;
SGXMKIF_HOST_CTL *psSGXHostCtl = psDevInfo->psSGXHostCtl;
#if defined(SYS_SUPPORTS_SGX_IDLE_CALLBACK)
if (!psDevInfo->bSGXIdle &&
((psSGXHostCtl->ui32InterruptFlags & PVRSRV_USSE_EDM_INTERRUPT_IDLE) != 0))
{
psDevInfo->bSGXIdle = IMG_TRUE;
SysSGXIdleTransition(psDevInfo->bSGXIdle);
}
else if (psDevInfo->bSGXIdle &&
((psSGXHostCtl->ui32InterruptFlags & PVRSRV_USSE_EDM_INTERRUPT_IDLE) == 0))
{
psDevInfo->bSGXIdle = IMG_FALSE;
SysSGXIdleTransition(psDevInfo->bSGXIdle);
}
#endif
if (((psSGXHostCtl->ui32InterruptFlags & PVRSRV_USSE_EDM_INTERRUPT_ACTIVE_POWER) != 0) &&
((psSGXHostCtl->ui32InterruptClearFlags & PVRSRV_USSE_EDM_INTERRUPT_ACTIVE_POWER) == 0))
{
psSGXHostCtl->ui32InterruptClearFlags |= PVRSRV_USSE_EDM_INTERRUPT_ACTIVE_POWER;
PDUMPSUSPEND();
#if defined(SYS_CUSTOM_POWERDOWN)
eError = SysPowerDownMISR(psDeviceNode, ui32CallerID);
#else
eError = PVRSRVSetDevicePowerStateKM(psDeviceNode->sDevId.ui32DeviceIndex,
PVRSRV_DEV_POWER_STATE_OFF,
ui32CallerID, IMG_FALSE);
if (eError == PVRSRV_OK)
{
SGXPostActivePowerEvent(psDeviceNode, ui32CallerID);
}
#endif
if (eError == PVRSRV_ERROR_RETRY)
{
psSGXHostCtl->ui32InterruptClearFlags &= ~PVRSRV_USSE_EDM_INTERRUPT_ACTIVE_POWER;
eError = PVRSRV_OK;
}
PDUMPRESUME();
}
if (eError != PVRSRV_OK)
{
PVR_DPF((PVR_DBG_ERROR, "SGXTestActivePowerEvent error:%u", eError));
}
}
IMG_VOID SGXTestActivePowerEvent (PVRSRV_DEVICE_NODE *psDeviceNode,
IMG_UINT32 ui32CallerID)
{
PVRSRV_ERROR eError = PVRSRV_OK;
PVRSRV_SGXDEV_INFO *psDevInfo = psDeviceNode->pvDevice;
SGXMKIF_HOST_CTL *psSGXHostCtl = psDevInfo->psSGXHostCtl;
#if defined(SYS_SUPPORTS_SGX_IDLE_CALLBACK)
if (!psDevInfo->bSGXIdle &&
((psSGXHostCtl->ui32InterruptFlags & PVRSRV_USSE_EDM_INTERRUPT_IDLE) != 0))
{
psDevInfo->bSGXIdle = IMG_TRUE;
SysSGXIdleTransition(psDevInfo->bSGXIdle);
}
else if (psDevInfo->bSGXIdle &&
((psSGXHostCtl->ui32InterruptFlags & PVRSRV_USSE_EDM_INTERRUPT_IDLE) == 0))
{
psDevInfo->bSGXIdle = IMG_FALSE;
SysSGXIdleTransition(psDevInfo->bSGXIdle);
}
#endif
/**
* Quickly check (without lock) if there is an APM event we should handle.
* This check fails most of the time so we don't want to incur lock overhead.
* Check the flags in the reverse order that microkernel clears them to prevent
* us from seeing an inconsistent state.
*/
if (((psSGXHostCtl->ui32InterruptClearFlags & PVRSRV_USSE_EDM_INTERRUPT_ACTIVE_POWER) == 0) &&
((psSGXHostCtl->ui32InterruptFlags & PVRSRV_USSE_EDM_INTERRUPT_ACTIVE_POWER) != 0))
{
eError = PVRSRVPowerLock(ui32CallerID, IMG_FALSE);
if (eError == PVRSRV_ERROR_RETRY)
return;
if (eError != PVRSRV_OK)
{
PVR_DPF((PVR_DBG_ERROR,"SGXTestActivePowerEvent failed to acquire lock - "
"ui32CallerID:%d eError:%u", ui32CallerID, eError));
return;
}
/**
* Check again (with lock) if APM event has been cleared or handled. A race
* condition may allow multiple threads to pass the quick check.
*/
if (((psSGXHostCtl->ui32InterruptClearFlags & PVRSRV_USSE_EDM_INTERRUPT_ACTIVE_POWER) != 0) ||
((psSGXHostCtl->ui32InterruptFlags & PVRSRV_USSE_EDM_INTERRUPT_ACTIVE_POWER) == 0))
{
PVRSRVPowerUnlock(ui32CallerID);
return;
}
psSGXHostCtl->ui32InterruptClearFlags |= PVRSRV_USSE_EDM_INTERRUPT_ACTIVE_POWER;
PDUMPSUSPEND();
#if defined(SYS_CUSTOM_POWERDOWN)
eError = SysPowerDownMISR(psDeviceNode, ui32CallerID);
#else
eError = PVRSRVSetDevicePowerStateKM(psDeviceNode->sDevId.ui32DeviceIndex,
PVRSRV_DEV_POWER_STATE_OFF);
if (eError == PVRSRV_OK)
{
SGXPostActivePowerEvent(psDeviceNode, ui32CallerID);
}
#endif
PVRSRVPowerUnlock(ui32CallerID);
PDUMPRESUME();
}
if (eError != PVRSRV_OK)
{
PVR_DPF((PVR_DBG_ERROR, "SGXTestActivePowerEvent error:%u", eError));
}
}
