From owner-freebsd-scsi  Tue Feb 11 09:35:52 1997
Return-Path: <owner-freebsd-scsi>
Received: (from root@localhost)
          by freefall.freebsd.org (8.8.5/8.8.5) id JAA06458
          for freebsd-scsi-outgoing; Tue, 11 Feb 1997 09:35:52 -0800 (PST)
Received: from Sisyphos.MI.Uni-Koeln.DE (Sisyphos.MI.Uni-Koeln.DE [134.95.212.10])
          by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id JAA06451
          for <scsi@freebsd.org>; Tue, 11 Feb 1997 09:35:47 -0800 (PST)
Received: from x14.mi.uni-koeln.de (annexr2-44.slip.Uni-Koeln.DE) by Sisyphos.MI.Uni-Koeln.DE with SMTP id AA14925
  (5.67b/IDA-1.5 for <scsi@freebsd.org>); Tue, 11 Feb 1997 18:35:41 +0100
Received: (from se@localhost) by x14.mi.uni-koeln.de (8.8.5/8.6.9) id SAA21977; Tue, 11 Feb 1997 18:35:38 +0100 (CET)
Message-Id: <19970211183534.ZZ52644@x14.mi.uni-koeln.de>
Date: Tue, 11 Feb 1997 18:35:34 +0100
From: se@freebsd.org (Stefan Esser)
To: craig@progroup.com (Craig Shaver)
Cc: scsi@freebsd.org
Subject: Re: 2940 and ncr target problems re: HELP!! ST32155W - Not detected during probing!!
References: <199702072134.NAA29174@vader.cs.berkeley.edu> <199702101012.TAA06339@madoka.hal.t.u-tokyo.ac.jp> <32FF4A6C.2781E494@progroup.com>
X-Mailer: Mutt 0.60-PL0
Mime-Version: 1.0
In-Reply-To: <32FF4A6C.2781E494@progroup.com>; from Craig Shaver on Feb 10, 1997 08:18:52 -0800
Sender: owner-freebsd-scsi@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

On Feb 10, craig@progroup.com (Craig Shaver) wrote:
> I believe this may point out a significant problem with the driver for
> the
> 2940W and most likely the ncr also.  I have tried to use a wide drive on 
> the ncr825 and 875 at a target id greater than 7.  It would not work.  I
> am not sure of the exact reason, but after seeing the problems Ajith
> had,
> I believe there is a bug in the drivers.
> 
> I went through the ncr.c source for the 2.1.6 driver and saw in every
> instance, that the target id was being masked with the literal '7' which
> is '111'b.  This only allows a total of 8 targets on the board.  The
> wide
> controllers physically allow up to 16 targets.  That would be a mask of
> '1111'b, or 15, or 017, or 0x0f.  Of course target 7 is usually reserved
> for
> the target id of the controller hba itself.

This has been fixed in the NCR driver in -current and -stable 
for some time, but the changes had not made it into 2.1.6.

Regards, STefan