From: Julien Grall <julien.grall@arm.com>
To: Juergen Gross <jgross@suse.com>, Roger Quadros <rogerq@ti.com>,
xen-devel@lists.xen.org
Subject: Re: USB passthrough with Xen on ARM
Date: Tue, 12 Sep 2017 11:57:47 +0100 [thread overview]
Message-ID: <d5f2db5d-ff9e-271a-e367-b340d1d4512c@arm.com> (raw)
In-Reply-To: <b471d482-a751-eb64-ba15-ef1b942c37b9@suse.com>
Hi,
On 12/09/17 11:00, Juergen Gross wrote:
> 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.
Backends in QEMU should just work with ARM. Although, I haven't tried
the PVUSB one.
Cheers,
--
Julien Grall
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next prev parent reply other threads:[~2017-09-12 10:57 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-12 8:13 USB passthrough with Xen on ARM Roger Quadros
2017-09-12 10:00 ` Juergen Gross
2017-09-12 10:52 ` Roger Quadros
2017-09-12 11:11 ` Juergen Gross
2017-09-12 10:57 ` Julien Grall [this message]
2017-09-12 11:22 ` Roger Quadros
2017-09-12 15:08 ` Julien Grall
2017-09-12 15:28 ` Juergen Gross
2017-09-13 10:33 ` Roger Quadros
2017-09-13 10:42 ` Juergen Gross
2017-09-13 10:48 ` Julien Grall
2017-09-13 11:02 ` Juergen Gross
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