//
// Completion routine for IRP carrying SRB.
//
NTSTATUS
CompletionIrpCompletionRoutine(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN PCOMPLETION_DATA Context
)
{
PMINIPORT_DEVICE_EXTENSION HwDeviceExtension = Context->HwDeviceExtension;
PSCSI_REQUEST_BLOCK completionSrb = Context->CompletionSrb;
PCCB shippedCcb = Context->ShippedCcb;
KDPrint(3,("Entered\n"));
UNREFERENCED_PARAMETER(DeviceObject);
if(completionSrb->DataBuffer)
{
PSCSI_REQUEST_BLOCK shippedSrb = (PSCSI_REQUEST_BLOCK)(completionSrb->DataBuffer);
KDPrint(1, ("Unexpected IRP completion!!!\n"));
ASSERT(shippedCcb);
InterlockedDecrement(&HwDeviceExtension->RequestExecuting);
InitializeListHead(&shippedCcb->ListEntry);
LSCcbSetStatusFlag(shippedCcb, CCBSTATUS_FLAG_TIMER_COMPLETE);
ExInterlockedInsertTailList(
&HwDeviceExtension->CcbCompletionList,
&shippedCcb->ListEntry,
&HwDeviceExtension->CcbCompletionListSpinLock
);
completionSrb->DataBuffer = NULL;
} else {
//
// Free the CCB if it is not going to the timer completion routine
// and allocated from the system pool by lanscsiminiport.
//
if(Context->ShippedCcbAllocatedFromPool)
LSCcbPostCompleteCcb(shippedCcb);
}
// Free resources
ExFreePoolWithTag(completionSrb, LSMP_PTAG_SRB);
ExFreePoolWithTag(Context, LSMP_PTAG_CMPDATA);
IoFreeIrp(Irp);
return STATUS_MORE_PROCESSING_REQUIRED;
}
//
// Complete a Ccb
//
VOID
LSCcbCompleteCcb(
IN PCCB Ccb
) {
LONG idx_sl;
NTSTATUS status;
ASSERT(Ccb->Type == LSSTRUC_TYPE_CCB);
ASSERT(Ccb->Length == sizeof(CCB));
ASSERT(!LSCcbIsFlagOn(Ccb,CCB_FLAG_COMPLETED));
ASSERT(Ccb->AssociateCount == 0);
ASSERT(Ccb->CcbCurrentStackLocationIndex < NR_MAX_CCB_STACKLOCATION);
ASSERT(Ccb->CcbCurrentStackLocation == &Ccb->CcbStackLocation[Ccb->CcbCurrentStackLocationIndex]);
KDPrintM(DBG_CCB_TRACE, ("entered with Ccb:%p\n", Ccb));
LSCcbSetFlag(Ccb, CCB_FLAG_COMPLETED);
LSCcbResetFlag(Ccb, CCB_FLAG_PENDING);
Ccb->CcbCurrentStackLocationIndex++;
Ccb->CcbCurrentStackLocation++;
//
// Call completion routines in order.
//
for( idx_sl = Ccb->CcbCurrentStackLocationIndex;
idx_sl < NR_MAX_CCB_STACKLOCATION;
idx_sl++, Ccb->CcbCurrentStackLocation++, Ccb->CcbCurrentStackLocationIndex++ ) {
ASSERT(Ccb->CcbCurrentStackLocation <= &Ccb->CcbStackLocation[NR_MAX_CCB_STACKLOCATION - 1]);
if(Ccb->CcbCurrentStackLocation->CcbCompletionRoutine) {
status = Ccb->CcbCurrentStackLocation->CcbCompletionRoutine(Ccb, Ccb->CcbCurrentStackLocation->CcbCompletionContext);
if(status == STATUS_MORE_PROCESSING_REQUIRED) {
KDPrintM(DBG_CCB_TRACE, ("Ccb=%p, more processing required.\n", Ccb));
return;
}
}
}
//
// Do post operation
//
LSCcbPostCompleteCcb(Ccb);
}
VOID
MiniTimer(
IN PMINIPORT_DEVICE_EXTENSION HwDeviceExtension
)
{
BOOLEAN BusChanged;
MiniCounter ++;
BusChanged = FALSE;
do {
PLIST_ENTRY listEntry;
PCCB ccb;
PSCSI_REQUEST_BLOCK srb;
// Get Completed CCB
listEntry = ExInterlockedRemoveHeadList(
&HwDeviceExtension->CcbCompletionList,
&HwDeviceExtension->CcbCompletionListSpinLock
);
if(listEntry == NULL)
break;
ccb = CONTAINING_RECORD(listEntry, CCB, ListEntry);
srb = ccb->Srb;
ASSERT(srb);
ASSERT(LSCcbIsStatusFlagOn(ccb, CCBSTATUS_FLAG_TIMER_COMPLETE));
KDPrint(1,("completed SRB:%p SCSIOP:%x\n", srb, srb->Cdb[0]));
if(LSCcbIsStatusFlagOn(ccb, CCBSTATUS_FLAG_BUSRESET_REQUIRED)) {
BusChanged = TRUE;
}
//
// Free a CCB
//
LSCcbPostCompleteCcb(ccb);
ScsiPortNotification(
RequestComplete,
HwDeviceExtension,
srb
);
InterlockedDecrement(&HwDeviceExtension->RequestExecuting);
} while(1);
if(BusChanged) {
KDPrint(1,("Bus change detected. RequestExecuting = %d\n", HwDeviceExtension->RequestExecuting));
ScsiPortNotification(
BusChangeDetected,
HwDeviceExtension,
NULL
);
}
if((MiniCounter % 1000) == 0)
KDPrint(4,("RequestExecuting = %d\n", HwDeviceExtension->RequestExecuting));
if(HwDeviceExtension->RequestExecuting != 0) {
ScsiPortNotification(
RequestTimerCall,
HwDeviceExtension,
MiniTimer,
1
);
} else {
HwDeviceExtension->TimerOn = FALSE;
if(ADAPTER_ISSTATUS(HwDeviceExtension,ADAPTER_STATUS_RUNNING))
ScsiPortNotification(
RequestTimerCall,
HwDeviceExtension,
MiniTimer,
1 //1000
);
}
ScsiPortNotification(
NextRequest,
HwDeviceExtension,
NULL
);
return;
}
