[vfio-users] USB enumeration (uPD720201)

[Brett Foster]

Switched to a 2-port ASMedia controller and I was able to attach a hub out
of the box. Yay! So the Renesas card is garbage.

On Fri, Nov 27, 2015 at 9:24 PM, Brett Foster <fosterb at edgeandvertex.org>
wrote:

> Interesting. It has happened that I have needed to do the power down
> procedure but in general the USB devices work or they do not... and those
> that do are consistent.
>
> So I have to wonder... is it the chipset or is there something about the
> virtualized environment? Have any other chipsets proven to be more reliable?
>
> This is about the only issue I think I've had with the VM since I figured
> this iommu stuff out. I'm really really impressed.
>
> On Fri, Nov 27, 2015 at 7:42 PM, Okky Hendriansyah <okky at nostratech.com>
> wrote:
>
>> On November 28, 2015 at 03:01:23, Brett Foster (fosterb at edgeandvertex.org)
>> wrote:
>>
>> Hi,
>>
>> I have a uPD720201 USB 3.0 controller card installed and mapped to my VM.
>> Many devices work fine, however a number of devices fail to enumerate. For
>> example, I have tried 4 different USB hubs (2 and 3). Some flash/disk
>> drives work while others don't. My USB CAN/LIN USB adapter doesn't work.
>> Some devices are USB 3. Some are USB 2.
>>
>> I've never seen this kind of behaviour before. Does anybody have
>> experience with this controller?
>>
>> Brett
>>
>> Hi Brett,
>>
>> I have a Renesas card with 4 port of USB 3.0 which I think the same with
>> yours. This is my lspci -k output for my USB 3.0 card:
>>
>> 08:00.0 USB controller: Renesas Technology Corp. uPD720201 USB 3.0 Host
>> Controller (rev 03)
>>
>> Kernel driver in use: vfio-pci
>>
>> Kernel modules: xhci_pci
>>
>> I have it passed through to my Windows 10 guest, with a USB tree
>> something like this:
>>
>> Renesas uPD720201 USB 3.0 Card
>>
>> |— Logitech Gamepad F510
>>
>> |— Dell U2312HM monitor USB 2.0 hub
>>
>> |— Canon LiDE 220 scanner
>>
>> |— Pluggable USB 2.0 switch
>>
>>    |— Toshiba USB 2.0 hub
>>
>>       |— Logitech G502 mouse
>>
>>       |— Filco Ninja keyboard
>>
>> The only troublesome part is the Toshiba USB 2.0 hub, sometimes it fails.
>> And I usually remedy it with fully power off the machine (turn of the PSU
>> switch) for a while and after that it enumerates normal again. Does your
>> card comes with a molex powered port? Just in case you haven’t done so,
>> have you plugged it with a molex?
>>
>> --
>> *Okky Hendriansyah*
>>
>
>
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