From owner-freebsd-bugs  Thu Jan 28 22:27:37 1999
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Date: Thu, 28 Jan 1999 23:18:21 -0700
To: "Justin T. Gibbs" <gibbs@FreeBSD.ORG>, freebsd-bugs@FreeBSD.ORG
From: Greg Satz <satz@sprynet.com>
Subject: Re: kern/9718
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I just did a cvsup on tag=RELENG_3 and it pulled over version 
1.4.2.1. I'll give it a shot. If I should be using another version, 
let me know where to get it.

Thanks,
Greg

At 7:43 PM -0800 1/27/99, Justin T. Gibbs wrote:
> Synopsis: SCSI timeout sometimes crashes 3.0-current
>
> State-Changed-From-To: open->feedback
> State-Changed-By: gibbs
> State-Changed-When: Wed Jan 27 19:37:19 PST 1999
> State-Changed-Why:
> Your problem is likely caused by one of two things:
> 1) A bug in the driver that was corrected in rev 1.6 of i386/eisa/ahb.c.
> 2) The fact that the new CAM 174X driver takes advantage of tagged
>    queuing and the additional load this causes on the card or bus
>    is exposing a firmware or cabling problem.
>
> To test out theory 1, pick up rev 1.6 of ahb.c from a local FreeBSD
> mirror, recompile your kernel with the new version of the driver,
> and see if the hangs persist.
>
> To test out theory 2, disable tagged queuing for this driver by changing
> line 1217 of sys/i386/eisa/ahb.c from
>
> 		cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
>
> to:
>
> 		cpi->hba_inquiry = PI_SDTR_ABLE;
>
> Please let me know if either of these suggestions address your problem.
> Of course, #1 is the solution I hope addresses your hang.
>
>
> Responsible-Changed-From-To: freebsd-bugs->gibbs
> Responsible-Changed-By: gibbs
> Responsible-Changed-When: Wed Jan 27 19:37:19 PST 1999
> Responsible-Changed-Why:
> My driver.


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