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From: se@fileserv1.MI.Uni-Koeln.DE (Stefan Esser)
Newsgroups: comp.os.386bsd.questions
Subject: Re: Support for AHA-2740/T SCSI
Date: 29 Jul 1994 13:54:14 GMT
Organization: Institute of Nuclear Physics, University of Cologne, Germany
Lines: 45
Distribution: world
Message-ID: <31b1m6INN25ob@rs1.rrz.Uni-Koeln.DE>
References: <CstyJ0.5AC@on.bell.ca> <CtHDMz.89s@tfs.com> <thompson-270794165017@144.37.1.111> <michaelv.775380687@ponderous.cc.iastate.edu> <318u7o$400@elvis.cs.umd.edu> <michaelv.775426301@ponderous.cc.iastate.edu>
NNTP-Posting-Host: fileserv1.mi.uni-koeln.de
In article <michaelv.775426301@ponderous.cc.iastate.edu>, michaelv@iastate.edu (Michael L. VanLoon) writes:
|> In <318u7o$400@elvis.cs.umd.edu> jdowdal@cs.umd.edu (John Dowdal) writes:
|> I don't actually own a PCI machine. But, I've heard of several people
|> successfully using the bt946c with NetBSD and FreeBSD, using the
|> standard bt742a driver that works with virtually all the BusLogic
|> cards. There is also a beta driver for the NCR810 under NetBSD that
|> supposedly works quite well. I don't know if FreeBSD has this driver.
|> I can't tell you anything about Linux and PCI.
Well, that's funny. I know of the NCR 53c810 driver that was developped under
FreeBSD and has been available via anon. FTP for some time now (after being
available to beta testers early this June).
(It's available from: FTP.Uni-Koeln.DE:packages/FreeBSD)
It supports advanced SCSI features (eg. tagged command queues) and is mostly
written in NCR SCRIPTS to make it put the least possible load on the host cpu.
(Ie. it generally does tags/disconnect/reselect without interrupts.)
The driver ought to work under NetBSD and we got several requests for the
sources from people trying a NetBSD port. It is not hard to do, only the
loadable device driver support in NetBSD requires changes to the probe and
attach routines.
We sent them our sources, and we are not against use in any free Unix clone.
But we would like to get patched versions back, to not have diverging
versions for the different *BSD around ...
("We" is: Wolfgang Stanglmeier <wolf@dentaro.GUn.de> and me (see below)).
So, if anybody took our FreeBSD driver and ported it to NetBSD, it would be
nice if we got the modified version back to be able to merge the changes into
a general *BSD release.
If there are independently developed drivers that use the high level features
of the NCR 53c810 (ie. don't use it as a dump controller ala 53c70), we
really would like to hear about those too ...
Regards,
STefan
--
Stefan Esser Internet: <se@MI.Uni-Koeln.DE>
Mathematisches Institut Tel: +49 221 4706010
Universitaet zu Koeln FAX: +49 221 4705160
Weyertal 80
50931 Koeln