From: Ralf Baechle <ralf@linux-mips.org>
To: Paul Chapman <paul.chapman@BrockU.CA>
Cc: linux-mips@linux-mips.org
Subject: Re: ip27 PCI devices
Date: Tue, 12 Apr 2005 11:58:15 +0100 [thread overview]
Message-ID: <20050412105815.GC5573@linux-mips.org> (raw)
In-Reply-To: <1113251422.21580.33.camel@paul.dev.brocku.ca>
On Mon, Apr 11, 2005 at 04:30:22PM -0400, Paul Chapman wrote:
> I've been experimenting with trying various PCI cards I have lying
> around in my Origin 200, to see if I can make any of them work.
The current Linux implementation limits IP27 to cards with 64-bit
addressing capability.
> So far, I've had no luck: all of them have resource collisions with the
> IOC3 (presumably because of its address decoding). They're detected
> fine in /proc/pci.
What kernel version are you trying?
> So: has anyone had any luck with anything they've tried? In particular,
> I'm looking for an ethernet card that works (and is readily available),
> since the performance of the IOC3 is pretty wretched.
That actually also seems to be more of a limitation of how the IP27 code
is setting up RRBs for PCI devices, so any driver is expected to deliver
a somewhat modest (understatement!) performance. Fixing fortunately isn't
too hard ...
Ralf
next prev parent reply other threads:[~2005-04-12 10:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-11 20:30 ip27 PCI devices Paul Chapman
2005-04-12 10:58 ` Ralf Baechle [this message]
2005-04-12 11:18 ` Maciej W. Rozycki
2005-04-12 11:42 ` Ralf Baechle
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