From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 8 Sep 1999 10:44:37 +1000 Message-Id: <199909080044.KAA02252@tango.anu.edu.au> From: Paul Mackerras To: jquinn@nortelnetworks.com CC: toa@pop.agri.ch, jquinn@nortelnetworks.com, linuxppc-dev@lists.linuxppc.org, linux-kernel@vger.rutgers.edu In-reply-to: <14293.24696.450823.134283@gargle.gargle.HOWL> (jquinn@nortelnetworks.com) Subject: Re: MO-Disk on PPC with 53C94 SCSI-chip Reply-to: Paul.Mackerras@cs.anu.edu.au References: <37BC482D.7EB2A4AF@pop.agri.ch> <14273.21611.490430.724369@gargle.gargle.HOWL> <37D3A439.3A41F55@pop.agri.ch> <199909070043.KAA01407@tango.anu.edu.au> <14293.24696.450823.134283@gargle.gargle.HOWL> Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: > Can you tell us what the difference is between this driver and the generic > 53c94 driver in the same directory? Also, is there a source of docs other > than the code there (for us SCSI newbies :-)? I assume you're talking about the mca_53c9x.c driver? I don't think that existed when I started doing mac53c94.c. I would expect that the main differences are in the areas of DMA and interrupt handling. The mca_53c9x driver is probably worth a look. I used the esp.c driver as a reference as the ESP chip in Suns is apparently a 53c96 and has marked similarities to the 53c94. There appear to be no fewer than 4 esp drivers there. :-) I never found a definitive manual or data sheet on the 53c94, unfortunately. For documentation on the SCSI-2 standard, I have a late draft that I got by ftp from somewhere. The actual final standard isn't available on the web as it costs real money. :-( Paul. ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/