VOID
STREAMAPI
CompleteDeviceSRB (
IN PHW_STREAM_REQUEST_BLOCK pSrb
)
{
DbgLogTrace(("TestCap: Completing Adapter SRB %8x\n", pSrb));
StreamClassDeviceNotification( DeviceRequestComplete, pSrb->HwDeviceExtension, pSrb);
}
VOID
DCamSurpriseRemoval(
IN PHW_STREAM_REQUEST_BLOCK pSrb
)
/*++
Routine Description:
Response to SRB_SURPRISE_REMOVAL.
Arguments:
pSrb - Pointer to the stream request block
Return Value:
None.
--*/
{
PIRP pIrp;
PIRB pIrb;
PDCAM_EXTENSION pDevExt;
PSTREAMEX pStrmEx;
NTSTATUS Status;
PAGED_CODE();
pIrb = (PIRB) pSrb->SRBExtension;
ASSERT(pIrb);
pDevExt = (PDCAM_EXTENSION) pSrb->HwDeviceExtension;
ASSERT(pDevExt);
//
// Set this to stop accepting incoming read.
//
pDevExt->bDevRemoved = TRUE;
//
// Wait until all pending work items are completed!
//
KeWaitForSingleObject( &pDevExt->PendingWorkItemEvent, Executive, KernelMode, FALSE, NULL );
//
// Wait for currect read to be attached so we cancel them all.
//
pStrmEx = pDevExt->pStrmEx;
if(pStrmEx) {
// Make sure that this structure is still valid.
if(pStrmEx->pVideoInfoHeader) {
KeWaitForSingleObject( &pStrmEx->hMutex, Executive, KernelMode, FALSE, 0 );
KeReleaseMutex(&pStrmEx->hMutex, FALSE);
}
}
pIrp = IoAllocateIrp(pDevExt->BusDeviceObject->StackSize, FALSE);
if(!pIrp) {
ERROR_LOG(("DCamSurpriseRemovalPacket: faile to get resource; pIrb=%p, pDevExt=%p, pIrp\n", pIrb, pDevExt));
pSrb->Status = STATUS_INSUFFICIENT_RESOURCES;
StreamClassDeviceNotification(DeviceRequestComplete, pSrb->HwDeviceExtension, pSrb);
return;
}
//
// un-register a bus reset callback notification
//
pIrb->FunctionNumber = REQUEST_BUS_RESET_NOTIFICATION;
pIrb->Flags = 0;
pIrb->u.BusResetNotification.fulFlags = DEREGISTER_NOTIFICATION_ROUTINE;
pIrb->u.BusResetNotification.ResetRoutine = (PBUS_BUS_RESET_NOTIFICATION) DCamBusResetNotification;
pIrb->u.BusResetNotification.ResetContext = 0;
Status = DCamSubmitIrpSynch(pDevExt, pIrp, pIrb);
if(Status) {
ERROR_LOG(("DCamSurpriseRemoval: Status %x while trying to deregister bus reset notification.\n", Status));
}
if(pStrmEx && pStrmEx->pVideoInfoHeader) {
//
// Stop isoch transmission so we can detach buffers and cancel pending SRBs
//
pIrb->FunctionNumber = REQUEST_ISOCH_STOP;
pIrb->Flags = 0;
pIrb->u.IsochStop.hResource = pDevExt->hResource;
pIrb->u.IsochStop.fulFlags = 0;
Status = DCamSubmitIrpSynch(pDevExt, pIrp, pIrb);
if(Status) {
ERROR_LOG(("DCamSurpriseRemoval: Status %x while trying to ISOCH_STOP.\n", Status));
}
IoFreeIrp(pIrp);
if( InterlockedExchange((PLONG)&pStrmEx->CancelToken, 1 ) == 0 ) {
DCamCancelAllPackets(
pDevExt,
&pDevExt->PendingReadCount );
}
COMPLETE_SRB( pSrb );
} else {
IoFreeIrp(pIrp);
StreamClassDeviceNotification(DeviceRequestComplete, pSrb->HwDeviceExtension, pSrb);
}
}
