Subject: Re: odd RTL8139 quirk.

From: Dave Jones <[email-masked]>
Date: Tue, 29 Apr 2008 18:10:11 -0400

On Tue, Apr 29, 2008 at 06:04:06PM -0400, Jeff Garzik wrote:
 > Dave Jones wrote:
 > > On Tue, Apr 29, 2008 at 03:37:41PM -0400, Jeff Garzik wrote:
 > >  > Dave Jones wrote:
 > >  > > I've just been playing with a model 2 OQO, which has an RTL8139.
 > >  > > It gets detected just fine, though it doesn't actually work..
 > >  > > 
 > >  > > eth0: RealTek RTL8139 at 0xf8830000, 00:00:00:00:00:00, IRQ 18
 > >  > > eth0:  Identified 8139 chip type 'RTL-8139'
 > >  > > 
 > >  > > The null MAC address being one clue.  Another oddity is that
 > >  > > ethtool reports that there's no link detected, even though there is.
 > >  > > (Enough for it to PXE boot a kernel from at least :)
 > >  > > 
 > >  > > Futzing with the debug= modparam didn't yield anything extra at all.
 > >  > > 
 > >  > > Any clues?
 > >  > 
 > >  > Sounds like a broken EEPROM.  Does supplying a MAC via ifconfig prior to 
 > >  > 'ifconfig ... up' help?
 > > 
 > > Ah. This sounds enlightening: http://www.oqotalk.com/index.php/topic,1511.0.html
 > > Seems a shame to have to choose PIO vs MMIO for a distro kernel though.
 > > Would there be any objection to turning that into a modparam ?
 > > (If we wanted to get really fancy, we could even quirk around it automatically
 > >  when we detect broken hardware).
 > 
 > Something like this?  :)
 > 
 > http://www.linux.sgi.com/archives/netdev/2004-11/msg00226.html

>>From a quick eyeball, that would seem that it still requires a choice
to be made whether or not to enable CONFIG_8139TOO_PIO
What I had in mind was to make that whole USE_IO_OPS ifdef
(and related bits) if (modparm==.. instead of #ifdefs.

	Dave

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