From owner-cvs-all@FreeBSD.ORG  Wed Oct  6 19:27:45 2004
Return-Path: <owner-cvs-all@FreeBSD.ORG>
Delivered-To: cvs-all@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id DBD7016A4D0; Wed,  6 Oct 2004 19:27:45 +0000 (GMT)
Received: from harmony.village.org (rover.village.org [168.103.84.182])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 03EC443D39; Wed,  6 Oct 2004 19:27:42 +0000 (GMT)
	(envelope-from imp@bsdimp.com)
Received: from localhost (harmony.village.org [10.0.0.6])
	by harmony.village.org (8.13.1/8.13.1) with ESMTP id i96JPGow025838;
	Wed, 6 Oct 2004 13:25:17 -0600 (MDT)
	(envelope-from imp@bsdimp.com)
Date: Wed, 06 Oct 2004 13:26:55 -0600 (MDT)
Message-Id: <20041006.132655.78073866.imp@bsdimp.com>
To: nate@root.org
From: "M. Warner Losh" <imp@bsdimp.com>
In-Reply-To: <41644490.3050005@root.org>
References: <200410060722.i967MwsJ014694@repoman.freebsd.org>
	<200410061054.42956.jhb@FreeBSD.org>
	<41644490.3050005@root.org>
X-Mailer: Mew version 3.3 on Emacs 21.3 / Mule 5.0 (SAKAKI)
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
cc: cvs-src@FreeBSD.org
cc: src-committers@FreeBSD.org
cc: cvs-all@FreeBSD.org
cc: jhb@FreeBSD.org
Subject: Re: cvs commit: src/sys/i386/pci pci_bus.c
X-BeenThere: cvs-all@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: CVS commit messages for the entire tree <cvs-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-all>
List-Post: <mailto:cvs-all@freebsd.org>
List-Help: <mailto:cvs-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 06 Oct 2004 19:27:46 -0000

In message: <41644490.3050005@root.org>
            Nate Lawson <nate@root.org> writes:
: >>  Hoewver, for CardBus bridges (cbb), they rarely get the resources
: >>  allocated by the BIOS, and this patch helps them greatly.  Typically
: >>  the 'bad Vcc' messages are caused by this problem.
: > 
: > We really should be looking at the SMAP to find out what the real limits of 
: > PCI space are I think since I think the SMAP includes an entry for PCI memory 
: > mapped I/O.
: 
: YES!  More integrated SMAP awareness is especially important as more 
: complex configs appear with different levels of reservation for upper 
: memory besides just "reserved" or "available".

However, the current SMAP definition is about useless since it doesn't
tell us directly what we need to know.  Well, it will give us an idea
of what we can exclude, but that still leaves a gap between 'all
that's excluded' and 'all that the host bridge passes'.

Warner