[CUWiN-Dev] Re: ath0: hardware error

[David Young]

On Thu, Aug 25, 2005 at 07:17:26PM -0500, David Young wrote:
> On Thu, Aug 25, 2005 at 03:29:16PM -0500, Bill Comisky wrote:
> > On Sun, 21 Aug 2005, David Young wrote:
> > 
> > >I added some debug messages as I tried to track down the source of
> > >"ath0: hardware error; resetting".  The debug messages have not shown
> > >me any obvious problem, but they do seriously slow down some nodes,
> > >so I am taking them out.
> > >
> > >Apply these patches to your NetBSD sources.  They take out the noisy
> > >debug messages:
> > >
> > >Apply ath-undo-1 in sys/dev/ic/, ath-undo-2 in sys/dev/:
> > >
> > >% cd your-netbsd-sources/src/sys/dev/ic
> > >% patch < ath-undo-1
> > >% cd -
> > >% cd your-netbsd-sources/src/sys/dev
> > >% patch < ath-undo-2
> > >
> > >Dave
> > 
> > Should I be seeing any "ath0: hardware error..." messages after these 
> > patches have been reverse applied?  I'm still seeing them, sometimes a lot 
> > of them.  I can see the CPU "% interrupt" in top shoot up when they're 
> > spewing to about 60% (with hw.ath0.debug=0x80000000 commented out in 
> > sysctl.conf).  I feel like my build broke somehow, though I deleted the 
> > build directory and unpacked the source fresh before "patch -R".
> 
> You may still see "ath0: hardware error...", but they should not come
> with the Rn and Tn lines that you used to see.
> 
> I don't know what causes ath0: hardware error.  The author of the driver
> tells me that I may need a PCI bus analyzer to figure it out. :-(
> 
> I am a PCI novice, but I strongly suspect that the error has something
> to do with PCI bus contention:
> 
> 1) I get a lot more "ath0: hardware error" indications on my Soekris
> net4521 when it carries one or two Cardbus WiFi cards in addition to
> the MiniPCI Atheros card.  I scarcely get any such indications when the
> MiniPCI cards are not in there.

Oops, I meant "when the Cardbus cards are not in there."

Dave

-- 
David Young             OJC Technologies
dyoung at ojctech.com      Urbana, IL * (217) 278-3933