/*++
Routine Description:
Called by the framework when it receives Write requests.
Arguments:
Queue - Default queue handle
Request - Handle to the read/write request
Length - Length of the data buffer associated with the request.
The default property of the queue is to not dispatch
zero length read & write requests to the driver and
complete is with status success. So we will never get
a zero length request.
--*/
VOID PSDrv_EvtIoWrite(IN WDFQUEUE Queue, IN WDFREQUEST Request, IN size_t Length)
{
PFILE_CONTEXT fileContext = NULL;
WDFUSBPIPE pipe;
WDF_USB_PIPE_INFORMATION pipeInfo;
PAGED_CODE();
// Get the pipe associate with this request.
fileContext = GetFileContext(WdfRequestGetFileObject(Request));
pipe = fileContext->Pipe;
if (pipe == NULL)
{
PSDrv_DbgPrint(1, ("PSDrv_EvtIoWrite: Invalid pipe!\n"));
WdfRequestCompleteWithInformation(Request, STATUS_INVALID_PARAMETER, 0);
return;
}
WDF_USB_PIPE_INFORMATION_INIT(&pipeInfo);
WdfUsbTargetPipeGetInformation(pipe, &pipeInfo);
if((WdfUsbPipeTypeBulk == pipeInfo.PipeType) || (WdfUsbPipeTypeInterrupt == pipeInfo.PipeType))
{
ReadWriteBulkEndPoints(Queue, Request, (ULONG)Length, WdfRequestTypeWrite);
return;
}
else if(WdfUsbPipeTypeIsochronous == pipeInfo.PipeType)
{
ReadWriteIsochEndPoints(Queue, Request, (ULONG)Length, WdfRequestTypeWrite);
return;
}
return;
}
VOID
Rio500_EvtIoWrite(
_In_ WDFQUEUE Queue,
_In_ WDFREQUEST Request,
_In_ size_t Length
)
/*++
Routine Description:
Called by the framework when it receives Write requests.
Arguments:
Queue - Default queue handle
Request - Handle to the read/write request
Lenght - Length of the data buffer associated with the request.
The default property of the queue is to not dispatch
zero lenght read & write requests to the driver and
complete is with status success. So we will never get
a zero length request.
Return Value:
VOID
--*/
{
WDFUSBPIPE pipe;
WDF_USB_PIPE_INFORMATION pipeInfo;
PAGED_CODE();
//
// Get the pipe associate with this request.
//
WDFDEVICE device = WdfIoQueueGetDevice(Queue);
PDEVICE_CONTEXT pDevContext = GetDeviceContext(device);
pipe = pDevContext->WritePipe;
if (pipe == NULL) {
Rio500_DbgPrint(1, ("Write pipe handle is NULL\n"));
WdfRequestCompleteWithInformation(Request, STATUS_INVALID_PARAMETER, 0);
return;
}
WDF_USB_PIPE_INFORMATION_INIT(&pipeInfo);
WdfUsbTargetPipeGetInformation(pipe, &pipeInfo);
if (WdfUsbPipeTypeBulk == pipeInfo.PipeType) {
ReadWriteBulkEndPoints(Queue, Request, (ULONG)Length, WdfRequestTypeWrite);
return;
}
Rio500_DbgPrint(1, ("ISO transfer is not supported for buffered I/O transfer\n"));
WdfRequestCompleteWithInformation(Request, STATUS_INVALID_DEVICE_REQUEST, 0);
}
