From owner-freebsd-hackers  Thu Oct 31 12:14:57 1996
Return-Path: owner-hackers
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.5/8.7.3) id MAA04038
          for hackers-outgoing; Thu, 31 Oct 1996 12:14:57 -0800 (PST)
Received: from clem.systemsix.com (clem.systemsix.com [198.99.86.131])
          by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id MAA04030
          for <hackers@freefall.freebsd.org>; Thu, 31 Oct 1996 12:14:49 -0800 (PST)
Received: from localhost (localhost [127.0.0.1]) by clem.systemsix.com (8.6.12/8.6.12) with SMTP id NAA07284; Thu, 31 Oct 1996 13:14:28 -0700
Message-Id: <199610312014.NAA07284@clem.systemsix.com>
X-Authentication-Warning: clem.systemsix.com: Host localhost didn't use HELO protocol
X-Mailer: exmh version 1.6.5 12/11/95
From: Steve Passe <smp@csn.net>
To: dg@root.com
cc: hackers@freefall.freebsd.org
Subject: Re: ed0 timeouts 
In-reply-to: Your message of "Fri, 25 Oct 1996 15:34:21 PDT."
             <199610252234.PAA09023@root.com> 
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Date: Thu, 31 Oct 1996 13:14:28 -0700
Sender: owner-hackers@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

Hi,

> >>like a problem acking ISA interrupts, or perhaps a bug in the handling of
> >>the interrupt masks.
> >
> >if it were a mask problem I would expect it to be more (always) prevelant,
> >but I suppose that doesn't eliminate the possibility of a race condition
> >on a mask.  As I mentioned earlier all the other hardware is perfectly
> >happy with this code: keyboard, disk controller, etc.  Peter reports
> >the floppy INTs work, don't know if the sio does or not...
> 
>    The network card likely has the highest burst/peak interrupt rate of all of
> these (except perhaps for the sio).
> 
> >I was hoping someone would mention some problem with these boards and
> >the INTA timing or somesuch thing.  When STefan gets some "PCI black magic"
> >fixed for me I will be able to substitute an SMP PCI Ultra.
> 
>    I assume you mean "SMC PCI Ultra"? As you suggest, that's going to need a
> few lines of code added to if_ed_p.c before it will work.
> 
> -DG
> 
> David Greenman
> Core-team/Principal Architect, The FreeBSD Project


FYI, I now have an SMC PCI 10B2 card running in the SMP kernel and
am seeing NO signs of INTerrupt loss.  This is with the 'de' driver.

--
Steve Passe	| powered by
smp@csn.net	|            FreeBSD

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: 2.6.2

mQCNAzHe7tEAAAEEAM274wAEEdP+grIrV6UtBt54FB5ufifFRA5ujzflrvlF8aoE
04it5BsUPFi3jJLfvOQeydbegexspPXL6kUejYt2OeptHuroIVW5+y2M2naTwqtX
WVGeBP6s2q/fPPAS+g+sNZCpVBTbuinKa/C4Q6HJ++M9AyzIq5EuvO0a8Rr9AAUR
tBlTdGV2ZSBQYXNzZSA8c21wQGNzbi5uZXQ+
=ds99
-----END PGP PUBLIC KEY BLOCK-----