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RE: [Xen-devel] [PATCH] USB support

  • To: "Anthony Liguori" <aliguori@xxxxxxxxxx>
  • From: "Dugger, Donald D" <donald.d.dugger@xxxxxxxxx>
  • Date: Wed, 7 Jun 2006 13:28:22 -0700
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Wed, 07 Jun 2006 13:30:43 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcaKb904liktGbRoT0Key/qs24hiOgAAE8kA
  • Thread-topic: [Xen-devel] [PATCH] USB support


Indeed, we are a little behind the times.  I was hoping for a standard
mouse that didn't require extra patches but then I've always been an
eternal optimist :-)  It makes life a lot easier when you're trying to
install an unmodified fully virtualized guest.  At least with the
Summagraphics it's just some config files that need to be changed,
nothing else.

Oh well, I guess we work with what we must.

Don Dugger
"Censeo Toto nos in Kansa esse decisse." - D. Gale
Ph: (303)440-1368 

>-----Original Message-----
>From: Anthony Liguori [mailto:aliguori@xxxxxxxxxx] 
>Sent: Wednesday, June 07, 2006 2:21 PM
>To: Dugger, Donald D
>Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
>Subject: Re: [Xen-devel] [PATCH] USB support
>Dugger, Donald D wrote:
>> Anthony-
>> Not knowing when the move to 0.8.1 will get done (although I know it
>> should be soon) I wanted to get this out now, especially since the
>> changes aren't that extensive, it's mainly the new USB files.  The
>> current Windows guest under VNC is so much better with the USB tablet
>> mouse that I thought it was worth the effort to provide this as an
>> interim solution.
>> I must have missed your SDL patch, I'll go find it.
>> Tnx for the pointer about the evdev, I'll have to try that 
>(although I'm
>> pretty sure `gpm' still doesn't work with the USB tablet).
>There are patches floating around to add evdev support for gpm.  
>Unfortunately, Linux mouse support is ages behind Windows :-(  It is 
>catching up at least.
>Anthony Liguori
>> --
>> Don Dugger
>> "Censeo Toto nos in Kansa esse decisse." - D. Gale
>> Donald.D.Dugger@xxxxxxxxx
>> Ph: (303)440-1368 
>>> -----Original Message-----
>>> From: Anthony Liguori [mailto:aliguori@xxxxxxxxxx] 
>>> Sent: Wednesday, June 07, 2006 1:56 PM
>>> To: Dugger, Donald D
>>> Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
>>> Subject: Re: [Xen-devel] [PATCH] USB support
>>> Donald D. Dugger wrote:
>>>> This patch backports the USB support from QEMU 0.8.1 to the 
>>> current Xen
>>>> device model.  To support USB there are two new optional 
>config lines
>>>> that can be added to the guest config file:
>>>>     usb=1
>>>>    This will enable USB without defining a specific USB device.
>>>>    This option is assumed and not needed if the `usbdevice' option
>>>>    is given.
>>>>     usbdevce='device'
>>>>    This will enable USB and also enable support for the 
>>> given device.
>>>>    Currently, the only two devices are `mouse' (a PS/2 mouse) and
>>>>    `tablet' (an absolute pointing device).  The advantage 
>>> of `tablet'
>>>>    is that Windows guests will automatically recognize and 
>>> support this
>>>>    device so specifying the config line:
>>>>            usbdevice='tablet'
>>>>    will create a mouse that works transparently with Windows guests
>>>>    under VNC.  (Linux doesn't recognize the USB tablet yet so Linux
>>>>    guests under VNC will still need the Summagraphics emulation.)
>>>> Signed-off-by: Don Dugger <donald.d.dugger@xxxxxxxxx>
>>> Why not just wait until the QEMU version is ported to the 
>newest one?
>>> BTW, you want to grab evtouch for USB tablet support under 
>Linux.  I 
>>> also have a patch which will be in the next version of evtouch 
>>> that adds 
>>> mouse wheel and 3rd button support to evtouch.
>>> You're also missing another patch I posted to qemu-devel 
>that fixes a 
>>> strange SDL capture problem with relative mouse mode that 
>>> Fabrice hasn't 
>>> picked up yet.  I'd really suggest moving all of QEMU up 
>because this 
>>> the USB emulation is under development still so you'll have to 
>>> be doing 
>>> an awful lot of back porting.
>>> The newest versions of Xorg will just work (with evdev).
>>> http://stz-softwaretechnik.com/~ke/touchscreen/evtouch.html
>>> http://www.cs.utexas.edu/users/aliguori/evtouch-middle-scroll.diff
>>> Regards,
>>> Anthony Liguori

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