NTSTATUS VIOSerialPortEvtDeviceD0Entry(
IN WDFDEVICE Device,
IN WDF_POWER_DEVICE_STATE PreviousState)
{
PVIOSERIAL_PORT port = RawPdoSerialPortGetData(Device)->port;
PPORTS_DEVICE pCtx = GetPortsDevice(port->BusDevice);
NTSTATUS status;
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP, "--> %s\n", __FUNCTION__);
PAGED_CODE();
if ((pCtx->in_vqs == NULL) || (pCtx->in_vqs[port->PortId] == NULL))
{
return STATUS_NOT_FOUND;
}
status = VIOSerialFillQueue(GetInQueue(port), port->InBufLock);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR, DBG_PNP,
"Error allocating input queue's buffers.\n");
return status;
}
VIOSerialSendCtrlMsg(port->BusDevice, port->PortId,
VIRTIO_CONSOLE_PORT_READY, 1);
if (port->GuestConnected)
{
VIOSerialSendCtrlMsg(port->BusDevice, port->PortId,
VIRTIO_CONSOLE_PORT_OPEN, 1);
}
port->Removed = FALSE;
VIOSerialEnableInterruptQueue(GetInQueue(port));
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP, "<-- %s\n", __FUNCTION__);
return status;
}
VOID
VIOSerialRenewAllPorts(
IN WDFDEVICE Device
)
{
NTSTATUS status = STATUS_SUCCESS;
WDFCHILDLIST list;
WDF_CHILD_LIST_ITERATOR iterator;
PPORTS_DEVICE pContext = GetPortsDevice(Device);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP,"--> %s\n", __FUNCTION__);
if(pContext->isHostMultiport)
{
VIOSerialFillQueue(pContext->c_ivq, pContext->CVqLock);
}
list = WdfFdoGetDefaultChildList(Device);
WDF_CHILD_LIST_ITERATOR_INIT(&iterator,
WdfRetrievePresentChildren );
WdfChildListBeginIteration(list, &iterator);
for (;;)
{
WDF_CHILD_RETRIEVE_INFO childInfo;
VIOSERIAL_PORT vport;
WDFDEVICE hChild;
WDF_CHILD_IDENTIFICATION_DESCRIPTION_HEADER_INIT(
&vport.Header,
sizeof(vport)
);
WDF_CHILD_RETRIEVE_INFO_INIT(&childInfo, &vport.Header);
status = WdfChildListRetrieveNextDevice(
list,
&iterator,
&hChild,
&childInfo
);
if (!NT_SUCCESS(status) || status == STATUS_NO_MORE_ENTRIES)
{
break;
}
ASSERT(childInfo.Status == WdfChildListRetrieveDeviceSuccess);
VIOSerialEnableInterruptQueue(GetInQueue(&vport));
WdfIoQueueStart(vport.ReadQueue);
WdfIoQueueStart(vport.WriteQueue);
WdfIoQueueStart(vport.IoctlQueue);
if(vport.GuestConnected)
{
VIOSerialSendCtrlMsg(vport.BusDevice, vport.PortId, VIRTIO_CONSOLE_PORT_OPEN, 1);
}
}
WdfChildListEndIteration(list, &iterator);
WdfChildListUpdateAllChildDescriptionsAsPresent(list);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP,"<-- %s\n", __FUNCTION__);
return;
}