ahci: attachment to atapi device

[Francois Tigeot]

On Tue, Jun 16, 2009 at 12:07:50PM -0700, Matthew Dillon wrote:
> :> ahci0.0: CMD TIMEOUT state=5 slot=22
> :>         cmd-reg=0x4d617<HPCP,CR,FR,FRE,POD,SUD,ST>
> :> 		sactive=00400000 active=00000000
> :> 		[...]
> :> 		STS=40
> :> ahci0.0: disk_rw: timeout
> :
> :With hint.ahci.force150, results are identical.
> 
>     Hmm.  I'm a bit at a loss.
> 
>     Update again.  I added some defensive bzero()ing of the FIS to the AHCI
>     driver.  Maybe there was some cruft in the read command it tried to
>     construct.

I just tried again. No change, the disk still timeouts.

>     Do any other disks work there (get past boot)?  Looking on Google
>     those 4000YS's had firmware issues.  It's worth a shot.  Maybe they
>     are expecting some field to be set in the command that I'm not setting.