C++ (Cpp) VIOSerialDiscardPortDataLockedの例

コード例 #1

ファイル: Port.c プロジェクト: koizumimizuki/kvm-guest-drivers-windows

VOID
VIOSerialPortClose(
    IN WDFFILEOBJECT FileObject
    )
{
    PRAWPDO_VIOSERIAL_PORT pdoData = RawPdoSerialPortGetData(
        WdfFileObjectGetDevice(FileObject));

    TraceEvents(TRACE_LEVEL_INFORMATION, DBG_CREATE_CLOSE,
        "--> %s\n", __FUNCTION__);

    if (!pdoData->port->Removed && pdoData->port->GuestConnected)
    {
        VIOSerialSendCtrlMsg(pdoData->port->BusDevice, pdoData->port->PortId,
            VIRTIO_CONSOLE_PORT_OPEN, 0);
    }
    pdoData->port->GuestConnected = FALSE;

    WdfSpinLockAcquire(pdoData->port->InBufLock);
    VIOSerialDiscardPortDataLocked(pdoData->port);
    WdfSpinLockRelease(pdoData->port->InBufLock);

    WdfSpinLockAcquire(pdoData->port->OutVqLock);
    VIOSerialReclaimConsumedBuffers(pdoData->port);
    WdfSpinLockRelease(pdoData->port->OutVqLock);

    TraceEvents(TRACE_LEVEL_INFORMATION, DBG_CREATE_CLOSE,
        "<-- %s\n", __FUNCTION__);
}

コード例 #2

ファイル: Port.c プロジェクト: koizumimizuki/kvm-guest-drivers-windows

NTSTATUS
VIOSerialPortEvtDeviceD0Exit(
    IN  WDFDEVICE Device,
    IN  WDF_POWER_DEVICE_STATE TargetState
    )
{
    PVIOSERIAL_PORT Port = RawPdoSerialPortGetData(Device)->port;
    PPORT_BUFFER buf;
    PSINGLE_LIST_ENTRY iter;

    UNREFERENCED_PARAMETER(TargetState);

    TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "--> %s\n", __FUNCTION__);

    WdfIoQueuePurge(Port->ReadQueue, WDF_NO_EVENT_CALLBACK, WDF_NO_CONTEXT);
    WdfIoQueuePurge(Port->WriteQueue, WDF_NO_EVENT_CALLBACK, WDF_NO_CONTEXT);
    WdfIoQueuePurge(Port->IoctlQueue, WDF_NO_EVENT_CALLBACK, WDF_NO_CONTEXT);

    VIOSerialDisableInterruptQueue(GetInQueue(Port));

    WdfSpinLockAcquire(Port->InBufLock);
    VIOSerialDiscardPortDataLocked(Port);
    Port->InBuf = NULL;
    WdfSpinLockRelease(Port->InBufLock);

    WdfSpinLockAcquire(Port->OutVqLock);
    VIOSerialReclaimConsumedBuffers(Port);
    WdfSpinLockRelease(Port->OutVqLock);

    while (buf = (PPORT_BUFFER)VirtIODeviceDetachUnusedBuf(GetInQueue(Port)))
    {
        VIOSerialFreeBuffer(buf);
    }

    iter = PopEntryList(&Port->WriteBuffersList);
    while (iter != NULL)
    {
        PWRITE_BUFFER_ENTRY entry = CONTAINING_RECORD(iter,
            WRITE_BUFFER_ENTRY, ListEntry);

        ExFreePoolWithTag(entry->Buffer, VIOSERIAL_DRIVER_MEMORY_TAG);
        ExFreePoolWithTag(entry, VIOSERIAL_DRIVER_MEMORY_TAG);

        iter = PopEntryList(&Port->WriteBuffersList);
    };

    TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "<-- %s\n", __FUNCTION__);

    return STATUS_SUCCESS;
}

コード例 #3

ファイル: Port.c プロジェクト: beckdong/kvm-guest-drivers-windows

NTSTATUS
VIOSerialPortEvtDeviceD0Exit(
    IN  WDFDEVICE Device,
    IN  WDF_POWER_DEVICE_STATE TargetState
    )
{
    PVIOSERIAL_PORT Port = RawPdoSerialPortGetData(Device)->port;
    PPORT_BUFFER buf;
    PSINGLE_LIST_ENTRY iter;

    TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "--> %s TargetState: %d\n",
        __FUNCTION__, TargetState);

    Port->Removed = TRUE;

    VIOSerialDisableInterruptQueue(GetInQueue(Port));

    WdfSpinLockAcquire(Port->InBufLock);
    VIOSerialDiscardPortDataLocked(Port);
    Port->InBuf = NULL;
    WdfSpinLockRelease(Port->InBufLock);

    VIOSerialReclaimConsumedBuffers(Port);

    while (buf = (PPORT_BUFFER)virtqueue_detach_unused_buf(GetInQueue(Port)))
    {
        VIOSerialFreeBuffer(buf);
    }

    iter = PopEntryList(&Port->WriteBuffersList);
    while (iter != NULL)
    {
        PWRITE_BUFFER_ENTRY entry = CONTAINING_RECORD(iter,
            WRITE_BUFFER_ENTRY, ListEntry);

        ExFreePoolWithTag(entry->Buffer, VIOSERIAL_DRIVER_MEMORY_TAG);
        WdfObjectDelete(entry->EntryHandle);

        iter = PopEntryList(&Port->WriteBuffersList);
    };

    TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "<-- %s\n", __FUNCTION__);

    return STATUS_SUCCESS;
}