From owner-freebsd-scsi  Mon Dec 30 14:56:10 2002
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Date: Mon, 30 Dec 2002 14:56:07 -0800 (PST)
From: Chuck McCrobie <mccrobie2000@yahoo.com>
Subject: Re: SCSI Problems with sym and Western Digital on FreeBSD 4.7-stable
To: "Justin T. Gibbs" <gibbs@scsiguy.com>,
	Nate Lawson <nate@root.org>
Cc: freebsd-scsi@freebsd.org
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--- "Justin T. Gibbs" <gibbs@scsiguy.com> wrote:
> > On Fri, 27 Dec 2002, Chuck McCrobie wrote:
> >> I am having SCSI problems with the sym driver and
> a
> >> Western Digital hard disk.  Under the -stable
> kernel
> >> built on 'Dec 1', the drive show up fine with
> 16-bit
> >> wide transfers at 40 MHz.  Under the most recent
> >> -stable kernel built on 'Dec 17', the Western
> Digital
> >> gets some type of very weird error message.  The
> >> Western Digital is "da1".
> > 
> >> (probe2:sym0:0:2:0): ODD transfer in DATA IN
> phase.
> >> (probe2:sym0:0:2:0): COMMAND FAILED (87 0 10).
> >> (probe2:sym0:0:2:0): ODD transfer in DATA IN
> phase.
> >> (probe2:sym0:0:2:0): COMMAND FAILED (87 0 10).
> >> (probe2:sym0:0:2:0): ODD transfer in DATA IN
> phase.
> >> (probe2:sym0:0:2:0): COMMAND FAILED (87 0 10).
> >> (probe2:sym0:0:2:0): ODD transfer in DATA IN
> phase.
> >> (probe2:sym0:0:2:0): COMMAND FAILED (87 0 10).
> >> (probe2:sym0:0:2:0): ODD transfer in DATA IN
> phase.
> >> (probe2:sym0:0:2:0): COMMAND FAILED (87 0 10).
> > 
> > These appear to be the problem.  Since nothing has
> changed in sym(4) for a
> > long time, this has to be elsewhere, perhaps in
> dma system.
> 
> My guess is that the WD guys didn't set their
> additional inquiry
> length correctly and/or the length is correct, but
> they fail to
> issue an ignore wide residue for the last transfer. 
> The problem
> only shows up now because we properly calculate the
> extra inquiry
> length.  Perhaps we should do what Gerard suggested
> and round up
> to an even transfer size.
> 
> --
> Justin
> 
> 
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message

What would I see on a SCSI bus analyzer in terms of
"issue an ignore wide residue" message?  Maybe I'll
have to break out the SCSI spec. and the bus
analyzer...

Chuck McCrobie

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