Subject: Re: Problems configuring SCSI disks
To: Jonathan Stone <firstname.lastname@example.org>
From: Simon Burge <email@example.com>
Date: 02/12/1998 12:05:48
On Wed, 11 Feb 1998 16:11:27 -0800 Jonathan Stone wrote:
> [supporting six or seven disk drives on one pmax scsi adaptor]
> >You need to play with the magic in sys/arch/pmax/pmax/conf-glue.c and
> >sys/arch/pmax/conf/scsi.pmax due to the funny SCSI configuration method
> >athat the PMAX uses. I've got a machine with 7 disks on the internal bus
> >without any problems. I'll send a patch when I get to work.
> >Jonathan - I've been running with this for a couple of weeks now, should
> >I check it in and submit a pullup request?
> Fine with me, as long as it doesnt break tape drives. I think 1.3
> also has glue entries for a second TC SCSI card; if so, maybe we
> should change both SCSI buses?
I'll check the tape drive out first.
> In retrospect the correct thing would be to do a `proper' new
> autoconfig match and attach routines -- preferably for 1.3 :). The
> hp300 port does that with old 4.4bsd scsi code similar to the pmax
> scsi and rz.c drivers; we could probably copy that. But it's always
> seemed as if the MI scsi code is `just around the corner' and so a
> proper autoconfig fix for the old code never quite seemed important
What's really involved in moving to MI SCSI? At a _very_ quick glance,
it looks like the Alpha uses the MI stuff and also support PMAZ cards,
so there's going to be a lot of stuff to work from. You're right - it's
been talked about for a while now :)