Porting WDM to WDF

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From: kid07.uba on 5 May 2008 08:28

---

Hello All,

I am porting a USB WDM driver to WDF. I have some vendor specific
commands thats needs to submitted to lower device.

I get a bugcheck 0x7E at WdfIoTargetSendInternalIoctlSynchronously().
Can some one help me if im going wrong anywhere in the below code.
Here are the WDM and WDF code snippets.

WDM
--------

NTSTATUS SubmitUSB()
{


usUrbSize = (USHORT)sizeof(struct
_URB_CONTROL_VENDOR_OR_CLASS_REQUEST);


pUrb = (PURB)ExAllocatePoolWithTag(NonPagedPool, usUrbSize,
'BSUD');
if (pUrb == NULL)
{
DbgPrint(1, ("ExAllocatePool Failed.. No Memory\n"));
return STATUS_NO_MEMORY;
}

UsbBuildVendorRequest(pUrb, URB_FUNCTION_VENDOR_DEVICE, usUrbSize,
USBD_TRANSFER_DIRECTION_IN | USBD_SHORT_TRANSFER_OK, 0,
ucRequest, usValue, usIndex,
pBuffer, NULL, ulTransferLen, NULL);


KeWaitForSingleObject( &KeSyncSubmitUrb, Executive, KernelMode,
FALSE, NULL );

KeInitializeEvent(&kEvent, NotificationEvent, FALSE);

// Build an IRP
pIrp = IoBuildDeviceIoControlRequest(IOCTL_INTERNAL_USB_SUBMIT_URB,
pdoNext, NULL, 0, NULL, 0, TRUE, &kEvent, &ioStatus);

if (pIrp == NULL)
{
DbgPrint(1, ("IoBuildDeviceIoControlRequest() failed!\n"));
status = STATUS_INSUFFICIENT_RESOURCES;
}
else
{
PIO_STACK_LOCATION pStack = IoGetNextIrpStackLocation(pIrp);
pStack->Parameters.Others.Argument1 = pUrb;
IoSetCancelRoutine(pIrp, NULL);

// Call the USBD
status = IoCallDriver(pdoNext, pIrp);

if (status == STATUS_PENDING)
{
LARGE_INTEGER TimeOut = { (ULONG)(-10000 * 1000), -1 };

while ( status != STATUS_SUCCESS )
{
// Wait for completion
status = KeWaitForSingleObject(&kEvent, Executive, KernelMode,
FALSE, &TimeOut);
if ( status != STATUS_SUCCESS )
{
DbgPrint(1, ("KeWaitForSingleObject failed\n");
if ( status == STATUS_TIMEOUT )
{
IoCancelIrp( pIrp );
}
}
}

status = ioStatus.Status;

}
}
KeSetEvent( &KeSyncSubmitUrb, 0, FALSE );
}

WDF Equivalent
-----------------------

NTSTATUS SubmitURB()
{
PURB pUrb = NULL;
WDFMEMORY urbMemory;
WDF_OBJECT_ATTRIBUTES objectAttribs;

WDF_MEMORY_DESCRIPTOR memoryDesc;

usUrbSize = (USHORT)sizeof(struct
_URB_CONTROL_VENDOR_OR_CLASS_REQUEST);

WDF_OBJECT_ATTRIBUTES_INIT(&objectAttribs);
objectAttribs.ParentObject = Device;

status = WdfMemoryCreate(
&objectAttribs,
NonPagedPool,
POOL_TAG,
usUrbSize,
&urbMemory,
(PVOID*) &pUrb);

if (!NT_SUCCESS(status)) {
DbgPrint(1, ("Failed to alloc mem for urb\n"));
status = STATUS_INSUFFICIENT_RESOURCES;
return status;
}

UsbBuildVendorRequest(pUrb, URB_FUNCTION_VENDOR_DEVICE, usUrbSize,
USBD_TRANSFER_DIRECTION_IN | USBD_SHORT_TRANSFER_OK, 0,
ucRequest, usValue, usIndex,
pBuffer, NULL, ulTransferLen, NULL);

WDF_MEMORY_DESCRIPTOR_INIT_HANDLE(&memoryDesc, urbMemory,
(USHORT)sizeof(URB));

status =
WdfIoTargetSendInternalIoctlSynchronously(WdfDeviceGetIoTarget(Device),
NULL, IOCTL_INTERNAL_USB_SUBMIT_URB, &memoryDesc, NULL, NULL, NULL);

if (!NT_SUCCESS(status)) {
DbgPrint(1, ("WdfIoTargetSendInternalIoctlSynchronously Failed
with error 0x%x\n",status));
return status;
}

}

Thank You.
Regards,
uba

From: Doron Holan [MSFT] on 5 May 2008 13:29

---

WdfIoTargetSendInternalIoctlSynchronously does not know how to put the URB
in the right stack location in the urb. you want to call
WdfUsbTargetDeviceSendControlTransferSynchronously instead.

d

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<kid07.uba(a)gmail.com> wrote in message
news:85062090-dc6a-46c3-9af7-791ebfdbaff2(a)8g2000hse.googlegroups.com...
> Hello All,
>
> I am porting a USB WDM driver to WDF. I have some vendor specific
> commands thats needs to submitted to lower device.
>
> I get a bugcheck 0x7E at WdfIoTargetSendInternalIoctlSynchronously().
> Can some one help me if im going wrong anywhere in the below code.
> Here are the WDM and WDF code snippets.
>
> WDM
> --------
>
> NTSTATUS SubmitUSB()
> {
>
>
> usUrbSize = (USHORT)sizeof(struct
> _URB_CONTROL_VENDOR_OR_CLASS_REQUEST);
>
>
> pUrb = (PURB)ExAllocatePoolWithTag(NonPagedPool, usUrbSize,
> 'BSUD');
> if (pUrb == NULL)
> {
> DbgPrint(1, ("ExAllocatePool Failed.. No Memory\n"));
> return STATUS_NO_MEMORY;
> }
>
> UsbBuildVendorRequest(pUrb, URB_FUNCTION_VENDOR_DEVICE, usUrbSize,
> USBD_TRANSFER_DIRECTION_IN | USBD_SHORT_TRANSFER_OK, 0,
> ucRequest, usValue, usIndex,
> pBuffer, NULL, ulTransferLen, NULL);
>
>
> KeWaitForSingleObject( &KeSyncSubmitUrb, Executive, KernelMode,
> FALSE, NULL );
>
> KeInitializeEvent(&kEvent, NotificationEvent, FALSE);
>
> // Build an IRP
> pIrp = IoBuildDeviceIoControlRequest(IOCTL_INTERNAL_USB_SUBMIT_URB,
> pdoNext, NULL, 0, NULL, 0, TRUE, &kEvent, &ioStatus);
>
> if (pIrp == NULL)
> {
> DbgPrint(1, ("IoBuildDeviceIoControlRequest() failed!\n"));
> status = STATUS_INSUFFICIENT_RESOURCES;
> }
> else
> {
> PIO_STACK_LOCATION pStack = IoGetNextIrpStackLocation(pIrp);
> pStack->Parameters.Others.Argument1 = pUrb;
> IoSetCancelRoutine(pIrp, NULL);
>
> // Call the USBD
> status = IoCallDriver(pdoNext, pIrp);
>
> if (status == STATUS_PENDING)
> {
> LARGE_INTEGER TimeOut = { (ULONG)(-10000 * 1000), -1 };
>
> while ( status != STATUS_SUCCESS )
> {
> // Wait for completion
> status = KeWaitForSingleObject(&kEvent, Executive, KernelMode,
> FALSE, &TimeOut);
> if ( status != STATUS_SUCCESS )
> {
> DbgPrint(1, ("KeWaitForSingleObject failed\n");
> if ( status == STATUS_TIMEOUT )
> {
> IoCancelIrp( pIrp );
> }
> }
> }
>
> status = ioStatus.Status;
>
> }
> }
> KeSetEvent( &KeSyncSubmitUrb, 0, FALSE );
> }
>
> WDF Equivalent
> -----------------------
>
> NTSTATUS SubmitURB()
> {
> PURB pUrb = NULL;
> WDFMEMORY urbMemory;
> WDF_OBJECT_ATTRIBUTES objectAttribs;
>
> WDF_MEMORY_DESCRIPTOR memoryDesc;
>
> usUrbSize = (USHORT)sizeof(struct
> _URB_CONTROL_VENDOR_OR_CLASS_REQUEST);
>
> WDF_OBJECT_ATTRIBUTES_INIT(&objectAttribs);
> objectAttribs.ParentObject = Device;
>
> status = WdfMemoryCreate(
> &objectAttribs,
> NonPagedPool,
> POOL_TAG,
> usUrbSize,
> &urbMemory,
> (PVOID*) &pUrb);
>
> if (!NT_SUCCESS(status)) {
> DbgPrint(1, ("Failed to alloc mem for urb\n"));
> status = STATUS_INSUFFICIENT_RESOURCES;
> return status;
> }
>
> UsbBuildVendorRequest(pUrb, URB_FUNCTION_VENDOR_DEVICE, usUrbSize,
> USBD_TRANSFER_DIRECTION_IN | USBD_SHORT_TRANSFER_OK, 0,
> ucRequest, usValue, usIndex,
> pBuffer, NULL, ulTransferLen, NULL);
>
> WDF_MEMORY_DESCRIPTOR_INIT_HANDLE(&memoryDesc, urbMemory,
> (USHORT)sizeof(URB));
>
> status =
> WdfIoTargetSendInternalIoctlSynchronously(WdfDeviceGetIoTarget(Device),
> NULL, IOCTL_INTERNAL_USB_SUBMIT_URB, &memoryDesc, NULL, NULL, NULL);
>
> if (!NT_SUCCESS(status)) {
> DbgPrint(1, ("WdfIoTargetSendInternalIoctlSynchronously Failed
> with error 0x%x\n",status));
> return status;
> }
>
> }
>
> Thank You.
> Regards,
> uba

From: kid07.uba on 6 May 2008 01:36

---

Thanks for the reply Doron.

I will use WdfUsbTargetDeviceSendControlTransferSynchronously() and
let you know if i come across any questions.

I would like to know if the above WDF snippet which i posted is WDM
equivalent. Do i need to add anything additional.

Thank You.

Regards,
uba

From: kid07.uba on 6 May 2008 06:43

---

Thank You Doron.

I got it working without any problems using
WdfUsbTargetDeviceSendControlTransferSynchronously()

Thank You.

Regards,
uba

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