mjacob
Wed Jul 15 13:21:12 PDT 1998
Update of /cvsroot/src/sys/dev/scsipi
In directory nb00:/tmp/cvs-serv10168

Modified Files:
	sd.c 
Log Message:
Fix for kern/3835: add an sd sense handler. If we get a check condition/sense
data ASC/ASCQ of 0x04/0x01 (logical unit not ready, initialization in progress),
hang out for 5 seconds and return a RETRY THE OPERATION command. If we
get a check condition/sense data ASC/ASCQ of 0x04/0x02 (logical unit not
ready, initialization command required), send a polled/nosleep START UNIT
command and return a RETRY THE OPERATION command if that succeeds.

Don't send a START UNIT to a disk quirked as SDEV_NO_START. Don't send
a START UNIT to removable media. The reason for the latter is to not
just blindly spin up new (maybe changed) media.

I should note that I've successfully made this work with the ISP host
adapter so far. Other host adapters will need some work to be able
to manage or reasonably fail NOSLEEP/POLL commands while in this
state. Alternatively, the internal SCSI midlayer structure has got
to allow for more controlled error recovery (e.g., restart queues
controlled by the target driver).



mjacob
Wed Jul 15 13:22:19 PDT 1998
Update of /cvsroot/src/sys/conf
In directory nb00:/tmp/cvs-serv10441

Modified Files:
	files 
Log Message:
New file for building isp host adapter.