Unstopable ata1: FAILURE - non aligned DMA transfer attempted loop

[Trigve Siver]

----- 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.

> -- 
> Anish Mistry
> 

Trigve

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