testdispatch.c

USB2.0原理与工程开发光盘(第二版)

#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 =
                              irpStack->Parameters.DeviceIoControl.OutputBufferLength;