C++ (Cpp) StorPortAcquireMSISpinLock Examples

Example #1

File: helper.c Project: RayRobben/kvm-guest-drivers-windows

ULONG
VioScsiAcquireSpinLock(
    IN PVOID DeviceExtension,
    IN ULONG MessageID,
    IN PSTOR_LOCK_HANDLE LockHandle
    )
{
    PADAPTER_EXTENSION  adaptExt;
    ULONG               status = STOR_STATUS_SUCCESS;

ENTER_FN();
    adaptExt = (PADAPTER_EXTENSION)DeviceExtension;
    if (adaptExt->num_queues > 1) {
        ULONG oldIrql = 0;
        status = StorPortAcquireMSISpinLock(DeviceExtension, MessageID, &oldIrql);
        LockHandle->Context.OldIrql = (KIRQL)oldIrql;
        if (status != STOR_STATUS_SUCCESS) {
            RhelDbgPrint(TRACE_LEVEL_ERROR, ("%s StorPortAcquireMSISpinLock returned status 0x%x\n", __FUNCTION__, status));
        }
    }
    else {
        StorPortAcquireSpinLock(DeviceExtension, InterruptLock, NULL, LockHandle);
    }
    return status;
EXIT_FN();
}

Example #2

File: virtio_stor_hw_helper.c Project: sun363587351/kvm-guest-drivers-windows

VOID
VioStorVQLock(
    IN PVOID DeviceExtension,
    IN ULONG MessageID,
    IN OUT PSTOR_LOCK_HANDLE LockHandle,
    IN BOOLEAN isr
    )
{
    PADAPTER_EXTENSION  adaptExt;
    RhelDbgPrint(TRACE_LEVEL_VERBOSE, ("--->%s MessageID = %d\n", __FUNCTION__, MessageID));

    adaptExt = (PADAPTER_EXTENSION)DeviceExtension;

    if (!adaptExt->msix_enabled) {
        if (!isr) {
            StorPortAcquireSpinLock(DeviceExtension, InterruptLock, NULL, LockHandle);
        }
    }
    else {
        if ((adaptExt->num_queues == 1) ||
            (!CHECKFLAG(adaptExt->perfFlags, STOR_PERF_CONCURRENT_CHANNELS))) {
            if (!isr) {
                ULONG oldIrql = 0;
                StorPortAcquireMSISpinLock(DeviceExtension, (adaptExt->msix_one_vector ? 0 : MessageID), &oldIrql);
                LockHandle->Context.OldIrql = (KIRQL)oldIrql;
            }
        }
        else {
            NT_ASSERT(MessageID > 0);
            NT_ASSERT(MessageID <= adaptExt->num_queues);
            StorPortAcquireSpinLock(DeviceExtension, StartIoLock, &adaptExt->dpc[MessageID - 1], LockHandle);
        }
    }
    RhelDbgPrint(TRACE_LEVEL_VERBOSE, ("<---%s MessageID = %d\n", __FUNCTION__, MessageID));
}

Example #3

File: virtio_stor.c Project: bdacode/kvm-guest-drivers-windows

VOID
CompleteDpcRoutine(
    IN PSTOR_DPC  Dpc,
    IN PVOID Context,
    IN PVOID SystemArgument1,
    IN PVOID SystemArgument2
    )
{
    STOR_LOCK_HANDLE  LockHandle;
    PADAPTER_EXTENSION adaptExt = (PADAPTER_EXTENSION)Context;

#ifdef MSI_SUPPORTED
    ULONG MessageID = PtrToUlong(SystemArgument1);
    ULONG OldIrql;
#endif

#ifdef MSI_SUPPORTED
    if(adaptExt->msix_vectors) {
        StorPortAcquireMSISpinLock (Context, MessageID, &OldIrql);
    } else {
#endif
        StorPortAcquireSpinLock ( Context, InterruptLock , NULL, &LockHandle);
#ifdef MSI_SUPPORTED
    }
#endif

    while (!IsListEmpty(&adaptExt->complete_list)) {
        PSCSI_REQUEST_BLOCK Srb;
        PRHEL_SRB_EXTENSION srbExt;
        pblk_req vbr;
        vbr  = (pblk_req) RemoveHeadList(&adaptExt->complete_list);
        Srb = (PSCSI_REQUEST_BLOCK)vbr->req;
        srbExt   = (PRHEL_SRB_EXTENSION)Srb->SrbExtension;
#ifdef MSI_SUPPORTED
        if(adaptExt->msix_vectors) {
           StorPortReleaseMSISpinLock (Context, MessageID, OldIrql);
        } else {
#endif
           StorPortReleaseSpinLock (Context, &LockHandle);
#ifdef MSI_SUPPORTED
        }
#endif
        if (Srb->DataTransferLength > srbExt->Xfer) {
           Srb->DataTransferLength = srbExt->Xfer;
           Srb->SrbStatus = SRB_STATUS_DATA_OVERRUN;
        }
        ScsiPortNotification(RequestComplete,
                         Context,
                         Srb);
#ifdef MSI_SUPPORTED
        if(adaptExt->msix_vectors) {
           StorPortAcquireMSISpinLock (Context, MessageID, &OldIrql);
        } else {
#endif
           StorPortAcquireSpinLock ( Context, InterruptLock , NULL, &LockHandle);
#ifdef MSI_SUPPORTED
        }
#endif
    }

#ifdef MSI_SUPPORTED
    if(adaptExt->msix_vectors) {
        StorPortReleaseMSISpinLock (Context, MessageID, OldIrql);
    } else {
#endif
        StorPortReleaseSpinLock (Context, &LockHandle);
#ifdef MSI_SUPPORTED
    }
#endif
    return;
}