?? testdispatch.c
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#include "usbdriver.h"
ULONG UsbGetCurrentFrameNumber(IN PDEVICE_OBJECT fdo);
ULONG UsbGetDeviceDescriptor(IN PDEVICE_OBJECT fdo,
PVOID pvOutputBuffer);
ULONG UsbGetStringDescriptor(IN PDEVICE_OBJECT fdo,
UCHAR Index,
USHORT LanguageId,
PVOID pvOutputBuffer,
ULONG ulLength);
ULONG UsbGetConfigDescriptor(IN PDEVICE_OBJECT fdo,
PVOID pvOutputBuffer,
ULONG ulLength);
NTSTATUS UsbStartIsoTransfer(IN PDEVICE_OBJECT fdo,IN PIRP Irp);
NTSTATUS InitTransferObject(IN OUT PISO_STREAM_OBJECT streamObject,IN ULONG index);
NTSTATUS IsoTransferComplete(IN PDEVICE_OBJECT bunkfdo,IN PIRP Irp,IN PVOID Context);
//
NTSTATUS TestCreate(IN PDEVICE_OBJECT fdo, IN PIRP Irp)
{
NTSTATUS ntStatus=STATUS_SUCCESS;
PDEVICE_EXTENSION pdx = (PDEVICE_EXTENSION )fdo->DeviceExtension;
pdx->OpenHandles++;
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
IoCompleteRequest (Irp, IO_NO_INCREMENT);
return ntStatus;
}
//
NTSTATUS TestClose(IN PDEVICE_OBJECT fdo, IN PIRP Irp)
{
NTSTATUS ntStatus=STATUS_SUCCESS;
PDEVICE_EXTENSION pdx = (PDEVICE_EXTENSION )fdo->DeviceExtension;
pdx->OpenHandles--;
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
IoCompleteRequest (Irp, IO_NO_INCREMENT);
return ntStatus;
}
//
NTSTATUS TestIOCTL(IN PDEVICE_OBJECT fdo,IN PIRP Irp)
{
NTSTATUS ntStatus;
PIO_STACK_LOCATION IrpStack;
PDEVICE_EXTENSION pdx;
ULONG IoControlCode;
PVOID IoBuffer;
ULONG InputBufferLength;
ULONG OutputBufferLength;
ULONG length;
PUCHAR pch;
pdx = (PDEVICE_EXTENSION )fdo->DeviceExtension;
if (!LockDevice(fdo))
return CompleteRequest(Irp, STATUS_DELETE_PENDING, 0);
IrpStack = IoGetCurrentIrpStackLocation (Irp);
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
IoBuffer = Irp->AssociatedIrp.SystemBuffer;
InputBufferLength = IrpStack->Parameters.DeviceIoControl.InputBufferLength;
OutputBufferLength = IrpStack->Parameters.DeviceIoControl.OutputBufferLength;
IoControlCode = IrpStack->Parameters.DeviceIoControl.IoControlCode;
switch (IoControlCode) {
case IOCTL_EZUSB_GET_CURRENT_FRAME_NUMBER:
{
ULONG frameNumber = 0;
if (OutputBufferLength < sizeof(ULONG)) {
Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
break;
}
frameNumber = UsbGetCurrentFrameNumber (fdo);
if (frameNumber) {
*((PULONG)IoBuffer) = frameNumber;
Irp->IoStatus.Information = sizeof(ULONG);
Irp->IoStatus.Status = STATUS_SUCCESS;
}
else
Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
}
break;
case IOCTL_Ezusb_GET_DEVICE_DESCRIPTOR:
{
length = UsbGetDeviceDescriptor (fdo, IoBuffer);
Irp->IoStatus.Information = length;
Irp->IoStatus.Status = STATUS_SUCCESS;
}
break;
case IOCTL_Ezusb_GET_STRING_DESCRIPTOR:
{
PGET_STRING_DESCRIPTOR_IN Input = IoBuffer;
if ((InputBufferLength = sizeof(GET_STRING_DESCRIPTOR_IN)) &&
(OutputBufferLength > 0)) {
length = UsbGetStringDescriptor (fdo,
Input->Index,
Input->LanguageId,
IoBuffer,
OutputBufferLength);
if (length) {
Irp->IoStatus.Information = length;
Irp->IoStatus.Status = STATUS_SUCCESS;
}
else
Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
}
else
Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
}
break;
case IOCTL_Ezusb_GET_CONFIGURATION_DESCRIPTOR:
{
length = UsbGetConfigDescriptor (fdo, IoBuffer, OutputBufferLength);
Irp->IoStatus.Information = length;
Irp->IoStatus.Status = STATUS_SUCCESS;
}
break;
case IOCTL_EZUSB_ISO_READ:
case IOCTL_EZUSB_ISO_WRITE:
Irp->IoStatus.Status = UsbStartIsoTransfer(fdo,Irp);
Irp->IoStatus.Information = 0;
break;
case IOCTL_Ezusb_RESETPIPE:
{
ULONG pipenum = *((PULONG) IoBuffer);
Irp->IoStatus.Status = UsbResetPipe(fdo,pipenum);
}
break;
default:
Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
}
UnlockDevice(fdo);
ntStatus = Irp->IoStatus.Status;
IoCompleteRequest (Irp,IO_NO_INCREMENT);
return ntStatus;
}
//
ULONG UsbGetCurrentFrameNumber(IN PDEVICE_OBJECT fdo)
{
NTSTATUS ntStatus = STATUS_SUCCESS;
PURB urb = NULL;
PDEVICE_EXTENSION pdx;
ULONG frameNumber = 0;
pdx = fdo->DeviceExtension;
urb = ExAllocatePool(NonPagedPool,sizeof(struct _URB_GET_CURRENT_FRAME_NUMBER));
if (urb == NULL)
return 0;
RtlZeroMemory(urb,sizeof(struct _URB_GET_CURRENT_FRAME_NUMBER));
urb->UrbHeader.Length = sizeof(struct _URB_GET_CURRENT_FRAME_NUMBER);
urb->UrbHeader.Function = URB_FUNCTION_GET_CURRENT_FRAME_NUMBER;
ntStatus = UsbCallUSBDI(fdo, urb);
if (NT_SUCCESS(ntStatus)) {
frameNumber = urb->UrbGetCurrentFrameNumber.FrameNumber;
}
ExFreePool(urb);
return frameNumber;
}
//
ULONG UsbGetDeviceDescriptor(IN PDEVICE_OBJECT fdo,
PVOID pvOutputBuffer)
{
NTSTATUS ntStatus = STATUS_SUCCESS;
PURB urb = NULL;
ULONG length = 0;
PDEVICE_EXTENSION pdx = NULL;
pdx = fdo->DeviceExtension;
urb = ExAllocatePool(NonPagedPool,
sizeof(struct _URB_CONTROL_DESCRIPTOR_REQUEST));
if (urb==NULL)
return STATUS_NO_MEMORY;
if (pvOutputBuffer==NULL)
return STATUS_INVALID_PARAMETER;
UsbBuildGetDescriptorRequest(urb,
(USHORT) sizeof (struct _URB_CONTROL_DESCRIPTOR_REQUEST),
USB_DEVICE_DESCRIPTOR_TYPE,
0,
0,
pvOutputBuffer,
NULL,
sizeof(USB_DEVICE_DESCRIPTOR),
NULL);
ntStatus = UsbCallUSBDI(fdo, urb);
if (NT_SUCCESS(ntStatus)) {
length = urb->UrbControlDescriptorRequest.TransferBufferLength;
}
else
length = 0;
ExFreePool(urb);
return length;
}
//
ULONG UsbGetStringDescriptor(IN PDEVICE_OBJECT fdo,
UCHAR Index,
USHORT LanguageId,
PVOID pvOutputBuffer,
ULONG ulLength)
{
NTSTATUS ntStatus = STATUS_SUCCESS;
PURB urb = NULL;
ULONG length = 0;
urb = ExAllocatePool(NonPagedPool,
sizeof(struct _URB_CONTROL_DESCRIPTOR_REQUEST));
if (urb==NULL)
return STATUS_NO_MEMORY;
if (pvOutputBuffer==NULL)
return STATUS_INVALID_PARAMETER;
UsbBuildGetDescriptorRequest(urb,
(USHORT) sizeof (struct _URB_CONTROL_DESCRIPTOR_REQUEST),
USB_STRING_DESCRIPTOR_TYPE,
Index,
LanguageId,
pvOutputBuffer,
NULL,
ulLength,
NULL);
ntStatus = UsbCallUSBDI(fdo, urb);
if (NT_SUCCESS(ntStatus)) {
length = urb->UrbControlDescriptorRequest.TransferBufferLength;
}
else
length = 0;
ExFreePool(urb);
return length;
}
//
ULONG UsbGetConfigDescriptor(IN PDEVICE_OBJECT fdo,
PVOID pvOutputBuffer,
ULONG ulLength)
{
NTSTATUS ntStatus = STATUS_SUCCESS;
PURB urb = NULL;
ULONG length = 0;
urb = ExAllocatePool(NonPagedPool,
sizeof(struct _URB_CONTROL_DESCRIPTOR_REQUEST));
if (urb==NULL)
return STATUS_NO_MEMORY;
if (pvOutputBuffer==NULL)
return STATUS_INVALID_PARAMETER;
UsbBuildGetDescriptorRequest(urb,
(USHORT) sizeof (struct _URB_CONTROL_DESCRIPTOR_REQUEST),
USB_CONFIGURATION_DESCRIPTOR_TYPE,
0,
0,
pvOutputBuffer,
NULL,
ulLength,
NULL);
ntStatus = UsbCallUSBDI(fdo, urb);
if (NT_SUCCESS(ntStatus)) {
length = urb->UrbControlDescriptorRequest.TransferBufferLength;
}
else
length = 0;
ExFreePool(urb);
return length;
}
//
NTSTATUS UsbStartIsoTransfer(IN PDEVICE_OBJECT fdo,IN PIRP Irp)
{
PDEVICE_EXTENSION pdx = fdo->DeviceExtension;
PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation (Irp);
PISO_TRANSFER_CONTROL isoControl =
(PISO_TRANSFER_CONTROL)Irp->AssociatedIrp.SystemBuffer;
ULONG bufferLength =
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