[3314] in linux-scsi channel archive
Re: scsi : aborting command due to timeout
daemon@ATHENA.MIT.EDU (root)
Fri Feb 13 09:55:25 1998
Date: Fri, 13 Feb 1998 01:48:35 -0800 (PST)
From: root <root@fullof.blarney.org>
To: "Daniel M. Eischen" <deischen@iworks.InterWorks.org>
cc: U.Soni@cs.ucl.ac.uk, linux-scsi@vger.rutgers.edu
In-Reply-To: <199802130445.WAA04131@iworks.InterWorks.org>
So you guys are saying that its a termination problem (the timeouts) ? I
kinda dont agree if thats the case, because my configuration was working
at one point for quite a while.
On Thu, 12 Feb 1998, Daniel M. Eischen wrote:
>
> > Ok. let me try and explain my predicament more clearly.
> >
> > I have an onboard AIC7880, with the following devices configured;
> >
> > -------- -------- -------- --------
> > -- | |-------| |-------| |-- | |
> > T | | high | | | | T | |
> > -- | |-------| |-------| |-- | |
> > | | | | | | | |
> > | | | | | | | |
> > -- | |-------| |-------| AIC |--------| |--
> > T | hd1 | low | hd2 | | 7880 | low |cdrom | T
> > -- | wide |-------| wide |-------| |--------|narrow|--
> > -------- -------- -------- --------
> >
> > T = Termination.
> >
> > Clearly, I need to configure the AIC7880 with Low-byte(off) and
> > High-byte(on)
>
> Right.
>
> > My SCSISelect doesn't appear to give me the option of auto-detect.
> > The only setting in SCSISelect for termination refers to the Low-byte.
> > The High-byte is turned on/off via a motherboard jumper.
>
> And no BIOS upgrade will change anything either I suppose :-(
>
> > The problem with the linux aic7xxx driver is that regardless of what I
> > do with the motherboard (high-byte) jumper, the driver tells me that
> > high-byte termination is set to exactly the same state as the low-byte
> > termination.
> >
> > So, the only settings that I can arrive at are;
> > Low-byte(on), High-byte(on) Both on.
> >
> > or, Low-byte(off), High-byte(off). Both off.
>
> Unlesss a BIOS upgrade will let you use auto-termination or give
> you access to high byte termination, there is nothing you can do
> other than hardcode the driver to force the proper termination
> setting. This sux :-( Probably another config option is in
> order here (another unhappy face :( ).
>
> Dan Eischen
> deischen@iworks.InterWorks.org
>
