linux-kernel - Re: PCI riser cards and PCI irq routing, etc

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Date:	Tue, 20 Feb 2007 14:56:30 +0000
From:	Alistair John Strachan <s0348365@....ed.ac.uk>
To:	Udo van den Heuvel <udovdh@...all.nl>
Cc:	Krzysztof Halasa <khc@...waw.pl>, linux-kernel@...r.kernel.org,
	Lennart Sorensen <lsorense@...lub.uwaterloo.ca>
Subject: Re: PCI riser cards and PCI irq routing, etc

On Tuesday 20 February 2007 04:17, Udo van den Heuvel wrote:
> Krzysztof Halasa wrote:
> > Udo van den Heuvel <udovdh@...all.nl> writes:
> >> At the bottom I added a dmesg output of the kernel after boot.
> >> I more or less know that irq 20 for the DVB-S card (saa7146 (1)) is
> >> 'working'. I know that irq 16 for saa7146 (0) (DVB-T) is not working for
> >> i2c although the card does work perfectly for DVB-T reception (picture,
> >> low CPU load, etc) with only reception as the bottleneck.
> >
> > BTW: Can you check which device # and IRQ does the card get if plugged
> > directly into the PCI slot on board (without the riser)?
>
> DN is 20 I believe (from the tranquilPC doc).
> irq I'd have to check.
>
> > Is it a VIA ITX board? I think I have VIA's riser card somewhere,
> > could check what it does.
>
> Yes, VIA Epia EN12000.
> Interesting to check the riser card.

Just be aware that there are two types of PCI riser -- risers that work in any 
board, and Via Epia-specific risers. The latter requires a BIOS update on 
some Epias and presumably has some advantages, possible the ones you're 
looking for.

-- 
Cheers,
Alistair.

Final year Computer Science undergraduate.
1F2 55 South Clerk Street, Edinburgh, UK.
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