VOID TimeoutRoutine(
PC0C_IO_PORT pIoPort,
IN PC0C_IRP_QUEUE pQueue)
{
LIST_ENTRY queueToComplete;
KIRQL oldIrql;
InitializeListHead(&queueToComplete);
KeAcquireSpinLock(pIoPort->pIoLock, &oldIrql);
if (pQueue->pCurrent) {
PC0C_IRP_STATE pState;
pState = GetIrpState(pQueue->pCurrent);
HALT_UNLESS(pState);
pState->flags |= C0C_IRP_FLAG_EXPIRED;
switch (pState->iQueue) {
case C0C_QUEUE_WRITE:
ReadWrite(pIoPort->pIoPortRemote, FALSE, pIoPort, FALSE, &queueToComplete);
break;
case C0C_QUEUE_READ:
ReadWrite(pIoPort, FALSE, pIoPort->pIoPortRemote, FALSE, &queueToComplete);
break;
case C0C_QUEUE_CLOSE:
FdoPortIo(C0C_IO_TYPE_CLOSE_COMPLETE,
NULL,
pIoPort,
&pIoPort->irpQueues[C0C_QUEUE_CLOSE],
&queueToComplete);
break;
}
}
KeReleaseSpinLock(pIoPort->pIoLock, oldIrql);
FdoPortCompleteQueue(&queueToComplete);
}
NTSTATUS FdoPortPnp(
IN PC0C_FDOPORT_EXTENSION pDevExt,
IN PIRP pIrp)
{
NTSTATUS status;
PIO_STACK_LOCATION pIrpStack = IoGetCurrentIrpStackLocation(pIrp);
ULONG minorFunction = pIrpStack->MinorFunction;
PDEVICE_OBJECT pLowDevObj = pDevExt->pLowDevObj; // IRP_MN_REMOVE_DEVICE deletes *pDevExt!
status = STATUS_SUCCESS;
switch (minorFunction) {
case IRP_MN_QUERY_DEVICE_RELATIONS: {
LIST_ENTRY queueToComplete;
KIRQL oldIrql;
PC0C_IO_PORT pIoPort = pDevExt->pIoPortLocal;
if ((pIoPort->exclusiveMode && pIoPort->isOpen) ||
(pIoPort->plugInMode && !pIoPort->pIoPortRemote->isOpen))
{
HidePort(pDevExt);
} else {
ShowPort(pDevExt);
}
/* complete pending CLOSE IRPs */
InitializeListHead(&queueToComplete);
KeAcquireSpinLock(pIoPort->pIoLock, &oldIrql);
FdoPortIo(C0C_IO_TYPE_CLOSE_COMPLETE,
NULL,
pIoPort,
&pIoPort->irpQueues[C0C_QUEUE_CLOSE],
&queueToComplete);
KeReleaseSpinLock(pIoPort->pIoLock, oldIrql);
FdoPortCompleteQueue(&queueToComplete);
break;
}
case IRP_MN_QUERY_REMOVE_DEVICE:
if (pDevExt->openCount)
status = STATUS_DEVICE_BUSY;
else
pIrp->IoStatus.Status = STATUS_SUCCESS;
break;
case IRP_MN_REMOVE_DEVICE:
RemoveFdoPort(pDevExt);
pDevExt = NULL;
pIrp->IoStatus.Status = STATUS_SUCCESS;
break;
case IRP_MN_START_DEVICE:
case IRP_MN_STOP_DEVICE:
case IRP_MN_QUERY_STOP_DEVICE:
case IRP_MN_CANCEL_STOP_DEVICE:
case IRP_MN_SURPRISE_REMOVAL:
pIrp->IoStatus.Status = STATUS_SUCCESS;
break;
}
if (status == STATUS_SUCCESS) {
IoSkipCurrentIrpStackLocation(pIrp);
status = IoCallDriver(pLowDevObj, pIrp);
TraceCode((PC0C_COMMON_EXTENSION)pDevExt, "PNP ", codeNameTablePnp, minorFunction, &status);
} else {
TraceIrp("PNP", pIrp, &status, TRACE_FLAG_RESULTS);
pIrp->IoStatus.Status = status;
IoCompleteRequest(pIrp, IO_NO_INCREMENT);
}
return status;
}
