BOOLEAN
SpWmiRemoveFreeMiniPortRequestItems(
IN PADAPTER_EXTENSION fdoExtension
)
/*++
Routine Description:
This function removes WMI_MINIPORT_REQUEST_ITEM structures from the "free"
queue of the adapter extension.
It removed all the free cells.
Arguments:
fdoExtension - The device_extension
Return Value:
TRUE always.
--*/
{
PWMI_MINIPORT_REQUEST_ITEM tmpRequestItem;
PWMI_MINIPORT_REQUEST_ITEM wmiRequestItem;
//
// Set the watermark to 0
// No need to grab a lock we're just setting it
fdoExtension->WmiFreeMiniPortRequestWatermark = 0;
DebugPrint((1, "SpWmiRemoveFreeMiniPortRequestItems: Removing %p", fdoExtension));
//
// Walk the queue of items and de-allocate as many as we need to.
//
for (;;) {
// Pop
wmiRequestItem = SpWmiPopFreeRequestItem(fdoExtension);
if (wmiRequestItem == NULL) {
break;
} else {
ExFreePool(wmiRequestItem);
}
}
// BUGBUG
// Later we should add a check and make sure that the count of
// cells is 0
return TRUE;
}
VOID
ScsiPortNotification(
IN SCSI_NOTIFICATION_TYPE NotificationType,
IN PVOID HwDeviceExtension,
...
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PADAPTER_EXTENSION deviceExtension = GET_FDO_EXTENSION(HwDeviceExtension);
PLOGICAL_UNIT_EXTENSION logicalUnit;
PSRB_DATA srbData;
PSCSI_REQUEST_BLOCK srb;
UCHAR pathId;
UCHAR targetId;
UCHAR lun;
va_list ap;
va_start(ap, HwDeviceExtension);
switch (NotificationType) {
case NextRequest:
//
// Start next packet on adapter's queue.
//
deviceExtension->InterruptData.InterruptFlags |= PD_READY_FOR_NEXT_REQUEST;
break;
case RequestComplete:
srb = va_arg(ap, PSCSI_REQUEST_BLOCK);
ASSERT(srb->SrbStatus != SRB_STATUS_PENDING);
ASSERT(srb->SrbStatus != SRB_STATUS_SUCCESS ||
srb->ScsiStatus == SCSISTAT_GOOD ||
srb->Function != SRB_FUNCTION_EXECUTE_SCSI);
//
// If this srb has already been completed then return, otherwise
// clear the active flag.
//
if (srb->SrbFlags & SRB_FLAGS_IS_ACTIVE) {
srb->SrbFlags &= ~SRB_FLAGS_IS_ACTIVE;
} else {
va_end(ap);
return;
}
//
// Treat abort completions as a special case.
//
if (srb->Function == SRB_FUNCTION_ABORT_COMMAND) {
ASSERT(FALSE);
logicalUnit = GetLogicalUnitExtension(deviceExtension,
srb->PathId,
srb->TargetId,
srb->Lun,
FALSE,
FALSE);
logicalUnit->CompletedAbort =
deviceExtension->InterruptData.CompletedAbort;
deviceExtension->InterruptData.CompletedAbort = logicalUnit;
} else {
//
// Validate the srb data.
//
srbData = srb->OriginalRequest;
#if DBG
ASSERT_SRB_DATA(srbData);
ASSERT(srbData->CurrentSrb == srb);
ASSERT(srbData->CurrentSrb != NULL &&
srbData->CompletedRequests == NULL);
if ((srb->SrbStatus == SRB_STATUS_SUCCESS) &&
((srb->Cdb[0] == SCSIOP_READ) ||
(srb->Cdb[0] == SCSIOP_WRITE))) {
ASSERT(srb->DataTransferLength);
}
#endif
if(((srb->SrbStatus == SRB_STATUS_SUCCESS) ||
(srb->SrbStatus == SRB_STATUS_DATA_OVERRUN)) &&
(TEST_FLAG(srb->SrbFlags, SRB_FLAGS_UNSPECIFIED_DIRECTION))) {
ASSERT(srbData->OriginalDataTransferLength >=
srb->DataTransferLength);
}
srbData->CompletedRequests =
deviceExtension->InterruptData.CompletedRequests;
deviceExtension->InterruptData.CompletedRequests = srbData;
//
// Cache away the last logical unit we touched in the miniport.
// This is cleared when we come out of the miniport
// synchronization but provides a shortcut for finding the
// logical unit before going into the hash table.
//
deviceExtension->CachedLogicalUnit = srbData->LogicalUnit;
}
break;
case ResetDetected:
//
// Notifiy the port driver that a reset has been reported.
//
deviceExtension->InterruptData.InterruptFlags |=
PD_RESET_REPORTED | PD_RESET_HOLD;
break;
case NextLuRequest:
//
// The miniport driver is ready for the next request and
// can accept a request for this logical unit.
//
pathId = va_arg(ap, UCHAR);
targetId = va_arg(ap, UCHAR);
lun = va_arg(ap, UCHAR);
//
// A next request is impiled by this notification so set the
// ready for next reqeust flag.
//
deviceExtension->InterruptData.InterruptFlags |= PD_READY_FOR_NEXT_REQUEST;
logicalUnit = deviceExtension->CachedLogicalUnit;
if((logicalUnit == NULL) ||
(logicalUnit->TargetId != targetId) ||
(logicalUnit->PathId != pathId) ||
(logicalUnit->Lun != lun)) {
logicalUnit = GetLogicalUnitExtension(deviceExtension,
pathId,
targetId,
lun,
FALSE,
FALSE);
}
if (logicalUnit != NULL && logicalUnit->ReadyLogicalUnit != NULL) {
//
// Since our ReadyLogicalUnit link field is not NULL we must
// have already been linked onto a ReadyLogicalUnit list.
// There is nothing to do.
//
break;
}
//
// Don't process this as request for the next logical unit, if
// there is a untagged request for active for this logical unit.
// The logical unit will be started when untagged request completes.
//
if (logicalUnit->CurrentUntaggedRequest == NULL) {
//
// Add the logical unit to the chain of logical units that
// another request maybe processed for.
//
logicalUnit->ReadyLogicalUnit =
deviceExtension->InterruptData.ReadyLogicalUnit;
deviceExtension->InterruptData.ReadyLogicalUnit = logicalUnit;
}
break;
case CallDisableInterrupts:
ASSERT(deviceExtension->InterruptData.InterruptFlags &
PD_DISABLE_INTERRUPTS);
//
// The miniport wants us to call the specified routine
// with interrupts disabled. This is done after the current
// HwRequestInterrutp routine completes. Indicate the call is
// needed and save the routine to be called.
//
deviceExtension->Flags |= PD_DISABLE_CALL_REQUEST;
deviceExtension->HwRequestInterrupt = va_arg(ap, PHW_INTERRUPT);
break;
case CallEnableInterrupts:
//
// The miniport wants us to call the specified routine
// with interrupts enabled this is done from the DPC.
// Disable calls to the interrupt routine, indicate the call is
// needed and save the routine to be called.
//
deviceExtension->InterruptData.InterruptFlags |=
PD_DISABLE_INTERRUPTS | PD_ENABLE_CALL_REQUEST;
deviceExtension->HwRequestInterrupt = va_arg(ap, PHW_INTERRUPT);
break;
case RequestTimerCall:
//
// The driver wants to set the miniport timer.
// Save the timer parameters.
//
deviceExtension->InterruptData.InterruptFlags |=
PD_TIMER_CALL_REQUEST;
deviceExtension->InterruptData.HwTimerRequest =
va_arg(ap, PHW_INTERRUPT);
deviceExtension->InterruptData.MiniportTimerValue =
va_arg(ap, ULONG);
break;
case WMIEvent: {
//
// The miniport wishes to post a WMI event for the adapter
// or a specified SCSI target.
//
PWMI_MINIPORT_REQUEST_ITEM lastMiniPortRequest;
PWMI_MINIPORT_REQUEST_ITEM wmiMiniPortRequest;
PWNODE_EVENT_ITEM wnodeEventItem;
PWNODE_EVENT_ITEM wnodeEventItemCopy;
wnodeEventItem = va_arg(ap, PWNODE_EVENT_ITEM);
pathId = va_arg(ap, UCHAR);
if (pathId != 0xFF) {
targetId = va_arg(ap, UCHAR);
lun = va_arg(ap, UCHAR);
}
//
// Validate the event first. Then attempt to obtain a free
// WMI_MINIPORT_REQUEST_ITEM structure so that we may store
// this request and process it at DPC level later. If none
// are obtained or the event is bad, we ignore the request.
//
if ((wnodeEventItem == NULL) ||
(wnodeEventItem->WnodeHeader.BufferSize >
WMI_MINIPORT_EVENT_ITEM_MAX_SIZE)) {
va_end(ap); // size, no free WMI_MINIPORT_REQUEST_ITEMs left]
return;
}
//
// Remove the WMI_MINIPORT_REQUEST_ITEM from the free list.
//
wmiMiniPortRequest = SpWmiPopFreeRequestItem(deviceExtension);
//
// Log an error if a free request item could not be dequeued
// (log only once in the lifetime of this adapter).
//
if (wmiMiniPortRequest == NULL) {
if (!deviceExtension->WmiFreeMiniPortRequestsExhausted) {
deviceExtension->WmiFreeMiniPortRequestsExhausted = TRUE;
ScsiPortLogError(HwDeviceExtension,
NULL,
pathId,
targetId,
lun,
SP_LOST_WMI_MINIPORT_REQUEST,
0);
}
va_end(ap);
return;
}
//
// Save information pertaining to this WMI request for later
// processing.
//
deviceExtension->InterruptData.InterruptFlags |= PD_WMI_REQUEST;
wmiMiniPortRequest->TypeOfRequest = (UCHAR)WMIEvent;
wmiMiniPortRequest->PathId = pathId;
wmiMiniPortRequest->TargetId = targetId;
wmiMiniPortRequest->Lun = lun;
RtlCopyMemory(wmiMiniPortRequest->WnodeEventItem,
wnodeEventItem,
wnodeEventItem->WnodeHeader.BufferSize);
//
// Queue the new WMI_MINIPORT_REQUEST_ITEM to the end of list in the
// interrupt data structure.
//
wmiMiniPortRequest->NextRequest = NULL;
lastMiniPortRequest =
deviceExtension->InterruptData.WmiMiniPortRequests;
if (lastMiniPortRequest) {
while (lastMiniPortRequest->NextRequest) {
lastMiniPortRequest = lastMiniPortRequest->NextRequest;
}
lastMiniPortRequest->NextRequest = wmiMiniPortRequest;
} else {
deviceExtension->InterruptData.WmiMiniPortRequests =
wmiMiniPortRequest;
}
break;
}
case WMIReregister: {
//
// The miniport wishes to re-register the GUIDs for the adapter or
// a specified SCSI target.
//
PWMI_MINIPORT_REQUEST_ITEM lastMiniPortRequest;
PWMI_MINIPORT_REQUEST_ITEM wmiMiniPortRequest;
pathId = va_arg(ap, UCHAR);
if (pathId != 0xFF) {
targetId = va_arg(ap, UCHAR);
lun = va_arg(ap, UCHAR);
}
//
// Attempt to obtain a free WMI_MINIPORT_REQUEST_ITEM structure
// so that we may store this request and process it at DPC
// level later. If none are obtained or the event is bad, we
// ignore the request.
//
// Remove a WMI_MINPORT_REQUEST_ITEM from the free list.
//
wmiMiniPortRequest = SpWmiPopFreeRequestItem(deviceExtension);
if (wmiMiniPortRequest == NULL) {
//
// Log an error if a free request item could not be dequeued
// (log only once in the lifetime of this adapter).
//
if (!deviceExtension->WmiFreeMiniPortRequestsExhausted) {
deviceExtension->WmiFreeMiniPortRequestsExhausted = TRUE;
ScsiPortLogError(HwDeviceExtension,
NULL,
pathId,
targetId,
lun,
SP_LOST_WMI_MINIPORT_REQUEST,
0);
}
va_end(ap);
return;
}
//
// Save information pertaining to this WMI request for later
// processing.
//
deviceExtension->InterruptData.InterruptFlags |= PD_WMI_REQUEST;
wmiMiniPortRequest->TypeOfRequest = (UCHAR)WMIReregister;
wmiMiniPortRequest->PathId = pathId;
wmiMiniPortRequest->TargetId = targetId;
wmiMiniPortRequest->Lun = lun;
//
// Queue the new WMI_MINIPORT_REQUEST_ITEM to the end of list in the
// interrupt data structure.
//
wmiMiniPortRequest->NextRequest = NULL;
lastMiniPortRequest =
deviceExtension->InterruptData.WmiMiniPortRequests;
if (lastMiniPortRequest) {
while (lastMiniPortRequest->NextRequest) {
lastMiniPortRequest = lastMiniPortRequest->NextRequest;
}
lastMiniPortRequest->NextRequest = wmiMiniPortRequest;
} else {
deviceExtension->InterruptData.WmiMiniPortRequests =
wmiMiniPortRequest;
}
break;
}
case BusChangeDetected: {
SET_FLAG(deviceExtension->InterruptData.InterruptFlags,
PD_BUS_CHANGE_DETECTED);
break;
}
default: {
ASSERT(0);
break;
}
}
va_end(ap);
//
// Request a DPC be queued after the interrupt completes.
//
deviceExtension->InterruptData.InterruptFlags |= PD_NOTIFICATION_REQUIRED;
} // end ScsiPortNotification()