[8813] in linux-scsi channel archive
Re: PROBLEM: Linux SCSI Reset With Tekram DC390-U2W and NCR/SYM Drivers
daemon@ATHENA.MIT.EDU (Kurt Garloff)
Mon May 15 10:35:50 2000
Date: Mon, 15 May 2000 16:25:21 +0200
From: Kurt Garloff <garloff@suse.de>
To: Richard Gooch <rgooch@ras.ucalgary.ca>
Cc: =?iso-8859-1?Q?=22G=E9rard_Roudier=22_=3Cgroudier=40club-internet=2Efr?=.=?iso-8859-1?Q?=3E?=@garloff.phys.tue.nl,
"Linux SCSI list" <linux-scsi@vger.rutgers.edu>
Message-ID: <20000515162521.L18560@garloff.tue.nl>
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In-Reply-To: <200004232106.e3NL60321824@vindaloo.ras.ucalgary.ca>; from rgooch@ras.ucalgary.ca on Sun, Apr 23, 2000 at 03:06:00PM -0600
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On Sun, Apr 23, 2000 at 03:06:00PM -0600, Richard Gooch wrote:
> groudier@club-internet.fr writes:
> > On the other hand, their numbering DC-395 may let think that it is
> > some successor to the DC-390 series. Not only this is untrue, but
> > the DC-395 looks like a 10 years old design based SCSI chip.
>
> Interesting. Is the 395 a new board? Does Linux support it?
> Hopefully the hardware database/HOWTO (whatever it is these days) has
> a warn-off in it.
The design is indeed similar to the old AM53C974 design. This allows for
rather good price SCSI controllers, but does indeed result in a number of
interrupts per SCSI command. At current SCSI speeds, your CPU is fast enough
to handle this, but it could of course do something more useful ...
There is a driver, see
http://www.garloff.de/kurt/linux/dc395/
ftp://ftp.suse.com/pub/people/garloff/linux/dc395/
However, there is a reason, why I did not send it to Linus and Alan dor
2.3/2.2 inclusion: While the driver works perfectly for most people, I have
a few testers which see bad errors, including data corruption. I suspect
some random data being picked up by the FIFO on some phase change ...
Before I'm not able to track down and fix that one, I won't submit it for
release.
Regards,
--
Kurt Garloff <garloff@suse.de> Eindhoven, NL
GPG key: See mail header, key servers Linux kernel development
SuSE GmbH, Nuernberg, FRG SCSI, Security
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