[4146] in linux-scsi channel archive
Re: Timeout errors with ncr53c895
daemon@ATHENA.MIT.EDU (Phil's Kernel Account)
Wed Jun 17 19:43:11 1998
Date: Wed, 17 Jun 1998 15:23:26 -0400 (EDT)
From: "Phil's Kernel Account" <kernel@eiterra.nls.net>
Reply-To: kernel@nls.net
To: Oscar Fernandez Cantero <ofcantero@ceife.es>
cc: linux-scsi@vger.rutgers.edu
In-Reply-To: <3587AA9C.C72CD573@ceife.es>
On Wed, 17 Jun 1998, Oscar Fernandez Cantero wrote:
#Hello SCSIers of the world,
Yo. :)
#I have recently got a Symbios SYM8951U Ultra2 card with NCR53C895 SCSI
#chip.
#I use it with 3 Cheetah Ultra2 drives in a raid0 configuration.
#I use kernel 2.0.34 patched with driver NCR53C8XX version 3.0 (the last
#I think).
#When I use them in 20MHz mode (40Mb/s selectable in the setup utility of
#the card) all works fine. But when I try changing to 40MHz mode (Ultra2
#mode) the configuration continues to be usable, but at arbitrary times an
#error arises that suspends the SCSI bus for a moment.
I haven't used an Ultra2 card yet, much less an NCR8951U (I'd likely use a
Mylex), but this sounds like a very simple problem to me. The driver isn't
built for 40MHz. It's possibly getting the response too quickly, and
missing it. In the meantime, forego the 40MHz mode, and stick with 20MHz.
It works, so don't mess with it. ;)
-Phil R. Jaenke (kernel@nls.net / prj@nls.net)
TheGuyInCharge(tm), Ketyra Designs - We get paid to break stuff :)
Linux pkrea.ketyra.INT 2.0.33 #15 Sat Apr 18 00:40:21 EDT 1998 i586
Linux eiterra.nls.net 2.1.98 #15 Fri May 1 18:21:00 EDT 1998 i586
- Linus says for 'brave people only.' I say 'keep a backup.' - :)
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