On Wed, Jul 16, 2014 at 09:38:34PM -0400, Ted Unangst wrote:
> On Wed, Jul 16, 2014 at 20:26, Stan Gammons wrote:
> > I know it's ancient and minimal hardware, but I've been tinkering with
> > OpenBSD 5.5 on a Nokia IP260 with an 8GB compact flash.  The OS was
> > installed on the compact flash using a card reader on a Dell laptop.
> > The OS boots and networking works as long as I specify the MAC using
> > lladdr in hostname.xxx and use duids. If you don't use duids the
> > partitions will not mount when the compact flash is moved from the
> > laptop to the IP260.  But I see some errors on an 8GB compact flash that
> > I didn't see with a 1GB compact flash.  Could it be the 8GB compact
> > flash is more than what the IP260 supported? Here's the dmesg
> 
> Could be.
> 
> > wd0c: device timeout reading fsbn 0 (wd0 bn 0; cn 0 tn 0 sn 0), retrying
> > wd0: soft error (corrected)
> > wd0(pciide0:0:0): timeout
> > type: ata
> > c_bcount: 512
> > c_skip: 0
> > pciide0:0:0: bus-master DMA error: missing interrupt, status=0x61
> > wd0: transfer error, downgrading to PIO mode 4
> > wd0(pciide0:0:0): using PIO mode 4
> > wd1(pciide0:0:1): using PIO mode 4, Ultra-DMA mode 2
> > wd0c: device timeout reading fsbn 65 (wd0 bn 65; cn 0 tn 1 sn 2), retrying
> > wd0: soft error (corrected)
> > root on wd0a (511531c0c5c7c075.a) swap on wd0b dump on wd0b
> > clock: unknown CMOS layout
> 
> This looks more like pciide controller issues. Either it or the CF
> aren't playing nice with each other. But once downgraded to PIO mode,
> it appears everything has been slowed down enough to work again.

Actually it is more likely CF socket issues.  There are additional
signals for DMA old sockets don't handle.

http://www.fccps.cz/download/adv/frr/cf.html
Is a good writeup of the situation.

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