Mailing List Archive: Xen 2.0 testing: some sort of DMA failure for TV card

Xen 2.0 testing: some sort of DMA failure for TV card

Jun 20, 2005, 7:46 AM

Post #1 of 3 (295 views)

Hi,

I've been trying xen (2.0-testing) on different hardware. Everything works
fine so far, except on my system at home: the Haupauge PVR 250 TV card
(with hardware mpeg encoder) does not work with xen.

The ivtv for that card driver seems to work as such: if I turn on
debugging, I see the interrupts and everything. Only the DMA transfers to
get the mpeg data out of the card get a timeout. Here the debugging output
is not really helpful.

I suspect the ivtv driver does something it isn't allowed to do even in
dom0.

How should I proceed to find out where the problem lies?

Rainer Schöpf

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Re: Xen 2.0 testing: some sort of DMA failure for TV card [ In reply to ]

davemuench at gmail

Jun 20, 2005, 9:30 AM

Post #2 of 3 (295 views)

Permalink

Hmm. I have 3 PVR-250's in my dom0 and they're running great. I'm
using ivtv 0.2.0-rc3j and xen 2.0.6. I haven't tried presenting them
to a domU yet, but that is my eventual plan, to migrate my mythtv
backend to a domU.

Dave

On 6/20/05, Rainer Schöpf <rainer.schoepf@proteosys.com> wrote:
> Hi,
>
> I've been trying xen (2.0-testing) on different hardware. Everything works
> fine so far, except on my system at home: the Haupauge PVR 250 TV card
> (with hardware mpeg encoder) does not work with xen.
>
> The ivtv for that card driver seems to work as such: if I turn on
> debugging, I see the interrupts and everything. Only the DMA transfers to
> get the mpeg data out of the card get a timeout. Here the debugging output
> is not really helpful.
>
> I suspect the ivtv driver does something it isn't allowed to do even in
> dom0.
>
> How should I proceed to find out where the problem lies?
>
> Rainer Schöpf
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>

--
David Muench - davemuench@gmail.com
Jabber ID: dave@jabber.wasteland.org

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Re: Xen 2.0 testing: some sort of DMA failure for TV card [ In reply to ]

rainer.schoepf at proteosys

Jun 20, 2005, 10:55 AM

Post #3 of 3 (295 views)

Permalink

On Mon, 20 Jun 2005, David Muench wrote:

> Hmm. I have 3 PVR-250's in my dom0 and they're running great. I'm
> using ivtv 0.2.0-rc3j and xen 2.0.6. I haven't tried presenting them
> to a domU yet, but that is my eventual plan, to migrate my mythtv
> backend to a domU.

Ahh, good to know, thanks.

I'll play around some more then.

Rainer

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users