To 设备加载的问题

suweibus 2007-7-11 10:44 楼主

本人使用的硬件是Ez-usb fx2系列68013芯片
但是怎么

NTSTATUS
Ezusb_PnPAddDevice(
IN PDRIVER_OBJECT DriverObject,
IN PDEVICE_OBJECT PhysicalDeviceObject
)
/*++
Routine Description:
This routine is called to create a new instance of the device

Arguments:
DriverObject - pointer to the driver object for this instance of Ezusb
PhysicalDeviceObject - pointer to a device object created by the bus

Return Value:
STATUS_SUCCESS if successful,
STATUS_UNSUCCESSFUL otherwise

--*/
{
NTSTATUS             ntStatus = STATUS_SUCCESS;
PDEVICE_OBJECT       fdo = NULL;
PDEVICE_EXTENSION    pdx;

WCHAR KernelDeviceNameBuffer[] = L"\\Device\\Ezusb-0";
UNICODE_STRING KernelDeviceNameUnicode;
WCHAR UserDeviceLinkBuffer[] = L"\\DosDevices\\Ezusb-0";
UNICODE_STRING UserDeviceLinkUnicode;
RtlInitUnicodeString (&KernelDeviceNameUnicode,
                        KernelDeviceNameBuffer);//&KernelDeviceNameUnicode

Ezusb_KdPrint(("enter Ezusb_PnPAddDevice\n"));

ntStatus = IoCreateDevice (DriverObject,
                           sizeof (DEVICE_EXTENSION),
                           NULL,
                           FILE_DEVICE_UNKNOWN,
                           0,
                           FALSE,
                           &fdo);

if (NT_SUCCESS(ntStatus))
{

   pdx = fdo->DeviceExtension;

   /*RtlInitUnicodeString (&UserDeviceLinkUnicode,
                        UserDeviceLinkBuffer);

   ntStatus = IoCreateSymbolicLink (&UserDeviceLinkUnicode,
                                 &KernelDeviceNameUnicode);

   RtlCopyMemory(pdx->DeviceLinkName,
               UserDeviceLinkBuffer,
               sizeof(UserDeviceLinkBuffer));
   */
   fdo->Flags &= ~DO_DEVICE_INITIALIZING;

   fdo->Flags |= DO_DIRECT_IO;
   pdx->PhysicalDeviceObject=PhysicalDeviceObject;

   pdx->StackDeviceObject =
      IoAttachDeviceToDeviceStack(fdo, PhysicalDeviceObject);

   ASSERT (pdx->StackDeviceObject != NULL);

   pdx->usage = 1;
   pdx->OpenHandles++;
   KeInitializeEvent(&pdx->evRemove,
                     NotificationEvent,
                     FALSE);                }

Ezusb_KdPrint(("exit Ezusb_PnPAddDevice (%x)\n", ntStatus));

return ntStatus;
}

本人只要使用设备描述符L"\\Device\\Ezusb-0";  ,这个些代码,编译出来的驱动程序就不能正常加载,加载到一半时就出问题,代码31,请问高手这是怎么回事,这例程都是一些例子程序中拷贝过来,应该没有问题啊

回复评论（7）

沙发 weimeng4359

忘记了,里面还有注释没有去掉,正常如下:

NTSTATUS
Ezusb_PnPAddDevice(
IN PDRIVER_OBJECT DriverObject,
IN PDEVICE_OBJECT PhysicalDeviceObject
)
/*++
Routine Description:
This routine is called to create a new instance of the device

Arguments:
DriverObject - pointer to the driver object for this instance of Ezusb
PhysicalDeviceObject - pointer to a device object created by the bus

Return Value:
STATUS_SUCCESS if successful,
STATUS_UNSUCCESSFUL otherwise

--*/
{
NTSTATUS             ntStatus = STATUS_SUCCESS;
PDEVICE_OBJECT       fdo = NULL;
PDEVICE_EXTENSION    pdx;

WCHAR KernelDeviceNameBuffer[] = L"\\Device\\Ezusb-0";
UNICODE_STRING KernelDeviceNameUnicode;
WCHAR UserDeviceLinkBuffer[] = L"\\DosDevices\\Ezusb-0";
UNICODE_STRING UserDeviceLinkUnicode;
RtlInitUnicodeString (&KernelDeviceNameUnicode,
                        KernelDeviceNameBuffer);//&KernelDeviceNameUnicode

Ezusb_KdPrint(("enter Ezusb_PnPAddDevice\n"));

ntStatus = IoCreateDevice (DriverObject,
                           sizeof (DEVICE_EXTENSION),
                           NULL,
                           FILE_DEVICE_UNKNOWN,
                           0,
                           FALSE,
                           &fdo);

if (NT_SUCCESS(ntStatus))
{

   pdx = fdo->DeviceExtension;

   RtlInitUnicodeString (&UserDeviceLinkUnicode,
                        UserDeviceLinkBuffer);

   ntStatus = IoCreateSymbolicLink (&UserDeviceLinkUnicode,
                                 &KernelDeviceNameUnicode);

   RtlCopyMemory(pdx->DeviceLinkName,
               UserDeviceLinkBuffer,
               sizeof(UserDeviceLinkBuffer));

   fdo->Flags &= ~DO_DEVICE_INITIALIZING;

   fdo->Flags |= DO_DIRECT_IO;
   pdx->PhysicalDeviceObject=PhysicalDeviceObject;

   pdx->StackDeviceObject =
      IoAttachDeviceToDeviceStack(fdo, PhysicalDeviceObject);

   ASSERT (pdx->StackDeviceObject != NULL);

   pdx->usage = 1;
   pdx->OpenHandles++;
   KeInitializeEvent(&pdx->evRemove,
                     NotificationEvent,
                     FALSE);                }

Ezusb_KdPrint(("exit Ezusb_PnPAddDevice (%x)\n", ntStatus));

return ntStatus;
}

点赞 2007-7-11 10:45