testdispatch.c

USB2.0原理与工程开发光盘(第二版)

#include "usbdriver.h"

ULONG UsbVendorRequest(IN PDEVICE_OBJECT DeviceObject,
                          PVENDOR_REQUEST_IN pVendorRequest);
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 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_Cyusb_VENDOR_REQUEST:
         length = UsbVendorRequest (fdo, (PVENDOR_REQUEST_IN) IoBuffer);

         if (length)
         {
            Irp->IoStatus.Information = length;
            Irp->IoStatus.Status = STATUS_SUCCESS;
         }
         else
         {
            Irp->IoStatus.Status = STATUS_SUCCESS;
         }
         break;
      case IOCTL_Cyusb_GET_DEVICE_DESCRIPTOR:
		  {
           length = UsbGetDeviceDescriptor (fdo, IoBuffer);
              Irp->IoStatus.Information = length;
              Irp->IoStatus.Status = STATUS_SUCCESS;
		  }
		  break;
      case IOCTL_Cyusb_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_Cyusb_GET_CONFIGURATION_DESCRIPTOR:
			 {
                 length = UsbGetConfigDescriptor (fdo, IoBuffer, OutputBufferLength);
                 Irp->IoStatus.Information = length;
                 Irp->IoStatus.Status = STATUS_SUCCESS;
			 }
             break;
         default:
			  Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
     } 
    UnlockDevice(fdo);
    ntStatus = Irp->IoStatus.Status;
    IoCompleteRequest (Irp,IO_NO_INCREMENT);
    return ntStatus;
}
//
ULONG UsbVendorRequest(IN PDEVICE_OBJECT fdo, IN PVENDOR_REQUEST_IN pVendorRequest)
{
    NTSTATUS            ntStatus        = STATUS_SUCCESS;
    PURB                urb             = NULL;
    ULONG               length          = 0;
    PUCHAR buffer = NULL;
    
    urb = ExAllocatePool(NonPagedPool, 
                         sizeof(struct _URB_CONTROL_VENDOR_OR_CLASS_REQUEST));
                         
    if (urb)
    {
        RtlZeroMemory(urb,sizeof(struct  _URB_CONTROL_VENDOR_OR_CLASS_REQUEST));

        urb->UrbHeader.Length = sizeof(struct _URB_CONTROL_VENDOR_OR_CLASS_REQUEST);
        urb->UrbHeader.Function = URB_FUNCTION_VENDOR_DEVICE;

        urb->UrbControlVendorClassRequest.TransferBufferLength = pVendorRequest->wLength;
        urb->UrbControlVendorClassRequest.TransferBufferMDL = NULL;
        urb->UrbControlVendorClassRequest.Request = pVendorRequest->bRequest;
        urb->UrbControlVendorClassRequest.Value = pVendorRequest->wValue;
        urb->UrbControlVendorClassRequest.Index = pVendorRequest->wIndex;

        if (pVendorRequest->direction)
        {
            urb->UrbControlVendorClassRequest.TransferFlags |= USBD_TRANSFER_DIRECTION_IN;
            urb->UrbControlVendorClassRequest.TransferBuffer = pVendorRequest;

        }
        else
        {
            urb->UrbControlVendorClassRequest.TransferFlags = 0;
            buffer = ExAllocatePool(NonPagedPool, pVendorRequest->wLength);

            urb->UrbControlVendorClassRequest.TransferBuffer = buffer;

            if (pVendorRequest->wLength == 1)
            {
                buffer[0] = pVendorRequest->bData;
            }
            else
            {
                int i;
                PUCHAR ptr = buffer;

                for (i=0; i < pVendorRequest->wLength; i++)
                {
                    *ptr = (UCHAR) i;
                    ptr++;
                }
            }
        }

        ntStatus = UsbCallUSBDI(fdo, urb);

        if (pVendorRequest->direction)
        {
            length = urb->UrbControlVendorClassRequest.TransferBufferLength;
        }
        else
        {
            length = 0;
        }

        ExFreePool(urb);
        if (buffer)
            ExFreePool(buffer);
    }
    return length;
}
//
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;
}