ahci: attachment to atapi device

[Matthew Dillon]

:> 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.
:
:-- 
:Francois Tigeot

    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.

    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.

					-Matt
					Matthew Dillon 
					<dillon at backplane.com>