Re: [Xen-devel] USB passthrough with Xen on ARM

[Juergen Gross <jgross@xxxxxxxx>]

On 12/09/17 10:13, Roger Quadros wrote:
> Hi,
> 
> I'm running Xen v4.9 on DRA7 (OMAP5/ArmV7) with Linux kernel v3.14 (yikes!!) 
> on dom0 and domU.
> I'm struggling to get USB passthrough working using pvUSB.
> 
> My domU config file contains
>    usb = 1
>    usbctrl = ['type=qusb,version=2,ports=4', 'type=qusb,version=1, ports=4', ]
> 
> I can see the vusb-0 and vusb-1 platform devices in /sys/devices
> 
> And the following message on domU kernel log
> [    1.849572] xenbus_probe_frontend: Device with no driver: device/vusb/0
> [    1.849627] xenbus_probe_frontend: Device with no driver: device/vusb/1
> 
> This means that there is no device driver for the vusb host controllers.
> 
> What is the way forward? Do I need to apply some patches to the domU kernel to
> add support for the USB frontend HCD drivers? 

This is one mandatory step, yes. You'll need:

https://lkml.org/lkml/2015/6/23/34
https://lkml.org/lkml/2015/6/23/36

The question is whether this will be enough for you to make it work: the
pvusb backend is qemu based. I'm not sure this will just work on ARM.


Juergen

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel