Re: Unstopable ata1: FAILURE - non aligned DMA transfer attempted loop

On Thursday 08 November 2007, Trigve Siver wrote:
> ----- Original Message ----
>
> > From: Anish Mistry <mistry.7_at_osu.edu>
> > To: freebsd-current_at_freebsd.org
> > Sent: Thursday, November 8, 2007 4:46:55 PM
> > Subject: Re: Unstopable ata1: FAILURE - non aligned DMA transfer
> > attempted loop
> >
> > On Wednesday 31 October 2007, Anish Mistry wrote:
> > > When trying to access a scratched DVD I get the following
> > > messages that loop forever until I reboot the machine.  The
> > > drive is unresponsive so that's the only way to remove the
> > > disc.  Any ideas?
> > >
> > > http://am-productions.biz/debug/pciconf.txt
> > >
> > > Running a recent -CURRENT.  I'm also getting this same issue on
> > > RELENG_7 on a different machine.
> > >
> > > Oct 31 12:01:29 littleguy kernel: ata1: FAILURE - non aligned
> > > DMA transfer attempted
> > > Oct 31 12:01:29 littleguy kernel: acd0: setting up DMA failed
> > > Oct 31 12:01:29 littleguy kernel: ata1: FAILURE - non aligned
> > > DMA transfer attempted
> > > Oct 31 12:01:29 littleguy kernel: acd0: setting up DMA failed
> > > Oct 31 12:01:29 littleguy kernel: ata1: FAILURE - non aligned
> > > DMA transfer attempted
> > > Oct 31 12:01:29 littleguy kernel: acd0: setting up DMA failed
> > > Oct 31 12:01:29 littleguy kernel: ata1: FAILURE - non aligned
> > > DMA transfer attempted
> > > Oct 31 12:01:29 littleguy kernel: acd0: setting up DMA failed
> > > Oct 31 12:01:29 littleguy kernel: ata1: FAILURE - non aligned
> > > DMA transfer attempted
> > > Oct 31 12:01:29 littleguy kernel: acd0: setting up DMA failed
> > > Oct 31 12:01:29 littleguy kernel: ata1: FAILURE - non aligned
> > > DMA transfer attempted
> > > Oct 31 12:01:29 littleguy kernel: acd0: setting up DMA failed
> > > Oct 31 12:01:29 littleguy kernel: ata1: FAILURE - non aligned
> > > DMA transfer attempted
> > > Oct 31 12:01:29 littleguy kernel: acd0: setting up DMA failed
> > > Oct 31 12:01:29 littleguy kernel: ata1: FAILURE - non aligned
> > > DMA transfer attempted
> > > Oct 31 12:01:29 littleguy kernel: acd0: setting up DMA failed
> >
> > Just an update.  I played through everything on the DVD on a
> > set-top DVD player and it played through everything.  There were
> > a couple hickups, but it played through them fine.  Is anyone
> > else seeing this problem?   It's pretty easy to reproduce with
> > k9copy.
> >
> > Thanks,
>
> I have the same problem, but... I have 2 DVD drives on the same
> "cable". When I use the "slave" one, I get the same errors and
> cannot watch DVDs. But when I use the "master" one, I've got the
> messafe (cd0: setting up DMA failed...) only once and I can watch
> DVD.
Both drives that I'm trying to use are Master.  The one on my desktop 
also has a slave drive connected.  The one on my laptop that also 
exhibits the same problem is master on it's own channel, no slaves.

-- 
Anish Mistry