From owner-freebsd-smp  Wed Jul 16 16:39:53 1997
Return-Path: <owner-smp>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.5/8.8.5) id QAA17906
          for smp-outgoing; Wed, 16 Jul 1997 16:39:53 -0700 (PDT)
Received: from Ilsa.StevesCafe.com (Ilsa.StevesCafe.com [205.168.119.129])
          by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id QAA17875
          for <smp@FreeBSD.ORG>; Wed, 16 Jul 1997 16:39:38 -0700 (PDT)
Received: from Ilsa.StevesCafe.com (localhost [127.0.0.1])
	by Ilsa.StevesCafe.com (8.8.6/8.8.5) with ESMTP id RAA10636;
	Wed, 16 Jul 1997 17:39:23 -0600 (MDT)
Message-Id: <199707162339.RAA10636@Ilsa.StevesCafe.com>
X-Mailer: exmh version 2.0gamma 1/27/96
From: Steve Passe <smp@csn.net>
To: ade@demon.net
cc: Chuck Robey <chuckr@Glue.umd.edu>, smp@FreeBSD.ORG
Subject: Re: HEADS UP: EISA cards. 
In-reply-to: Your message of "Wed, 16 Jul 1997 23:48:18 BST."
             <E0wocrq-0000Tw-00@genghis.eng.demon.net> 
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Date: Wed, 16 Jul 1997 17:39:23 -0600
Sender: owner-smp@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

Hi,

> >boards out there would be getting a little aged, and it seems fairly safe
> >to exclude them from smp work.
> 
> Bzzzt. Wrong.
> 
> Micronics do dual (and quad) Pentium/PPro motherboards, which are
> PCI/(E)ISA configured.
> 
> Indeed, my personal SMP experimentation machine (though not my 'real'
> SMP machines) have 3COM EISA cards in them for management interfaces
> (the 'real' work going out through PCI cards).
> 
> Fortunately, the 3c579 Vortex is bus-mastering, so would appear to be
> unaffected by the suggested changes here (please correct me if
> I'm wrong here -- when it comes to hardware, I'm more of a
> Sun (so sue me :) person than PC).
> 
> However, the point remains that until somebody figures out a totally
> PCI-based motherboard (7-8 PCI slots), we *cannot* afford to completely
> blow away EISA support, as you would seem to suggest.

again, I'm NOT eliminating EISA hardware, just NON bus-mastering EISA cards
that do DMA via the chipset DMA registers.  So far no one has reported using 
such beasts...

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