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

On Thursday 08 November 2007, Anish Mistry wrote:
> 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.
This is still a problem on current and 7.  It's not just bad DVDs I'm 
also getting it on good DVDs too.


-- 
Anish Mistry