Well, we should probably fix esp to take the ioctl stuff that enables tags
only for devices that support it.

Look- this looks like you can't run because an 1588 is whining about
tags- MESSAGE REJECT  should have been issued, but it wasn't (surprise)-
short of fixing esp to only do tagged when enabled, it's probably a fine thing
to disable this for SCSI-1 at this point.

> > Sort of, because many CCS (SCSI-1, but not SCSI-2) drives support T'qing fine.
> > 
> > What issue are you trying to address hee?
> 
> I have two disks responding like this:
> 
>   sd0 at scsibus0 target 3 lun 0: <MICROP, 1588-15MBSUN0669, SN0C> SCSI1 0/direct fixed
>   sd0(esp0:3:0):  Check Condition on CDB: 0x1b 00 00 00 01 00
>       SENSE KEY:  Aborted Command
>        ASC/ASCQ:  Overlapped Commands Attempted
> 
> There's no MESSAGE REJECT. The target goes from the selection phase
> the status phase indicating a check condition.
> 
> -pk
>