From owner-freebsd-questions@FreeBSD.ORG  Tue Sep 18 08:25:25 2012
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id C072D106564A
	for <freebsd-questions@freebsd.org>;
	Tue, 18 Sep 2012 08:25:25 +0000 (UTC)
	(envelope-from goran.lowkrantz@ismobile.com)
Received: from mail.ismobile.com (mail.ismobile.com [62.119.44.68])
	by mx1.freebsd.org (Postfix) with ESMTP id 6EF2A8FC0C
	for <freebsd-questions@freebsd.org>;
	Tue, 18 Sep 2012 08:25:25 +0000 (UTC)
Received: from mail.ismobile.com (mail.ismobile.com [62.119.44.68])
	by dkim.mail.arcticgroup.se (Postfix) with ESMTP id 9968B1D133
	for <freebsd-questions@freebsd.org>;
	Tue, 18 Sep 2012 10:25:23 +0200 (CEST)
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=ismobile.com; h=date:from
	:to:subject:message-id:mime-version:content-type
	:content-transfer-encoding; s=selector1; bh=kAuvjSkLniY7cmGbi9Ws
	KWrXlyg=; b=cdGrp4nvTvPBCbUQbwTISO9hZSbSZwDioaRC2M/0m/W005/04GvY
	mu4qS0dp9xFTCJYHvCTERpGsPz+TdT7RH57Ja6qMV4mgmQ//VUJo3s+kMuiY3YTk
	sHcSZs3IRPBVrVIkRKNJhqHggdvGAVSMTz+BHhosO4sqmkQVjmAWCeI=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=ismobile.com; h=date:from:to
	:subject:message-id:mime-version:content-type
	:content-transfer-encoding; q=dns; s=selector1; b=ihgDlER9jZUx/d
	0EuNvo7bDoBfzGQUiwQES4PhxWFhBf1duV58QimoOXeM7NaU8qhifK25yrZkOxNX
	hRs9dsLZncLr+CWCidk8K7/krIuGBpL8DpHbB4ayP3/1q4d0dzHFMrY8ZkbUtFlt
	dNvY8kgFuZ2s+Iu2jAPPbWqmL8fCk=
Received: from [172.16.2.46] (unknown [172.16.2.46])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(No client certificate requested)
	by mail.ismobile.com (Postfix) with ESMTPSA id 5862C1CFFC
	for <freebsd-questions@freebsd.org>;
	Tue, 18 Sep 2012 10:25:23 +0200 (CEST)
Date: Tue, 18 Sep 2012 10:25:31 +0200
From: =?UTF-8?Q?G=C3=B6ran_L=C3=B6wkrantz?= <goran.lowkrantz@ismobile.com>
To: freebsd-questions@freebsd.org
Message-ID: <84002D87687695781C9FBC88@Gorans-MacBook-Pro.local>
X-Mailer: Mulberry/4.0.8 (Mac OS X)
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Subject: exclude device from bus probe?
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 18 Sep 2012 08:25:25 -0000

We have a system based on Supermicro X7SPA-HF with IPMI connected via a 
shared 82574L NIC. We are not using this NIC for anything from the OS but 
the probing and device attach breaks the IPMI connection so bad FBSD don't 
see any screen during boot. There is no BIOS flag that disables the NIC 
from the OS, only a HW strap but that dsables the IPMI also.

Is it possible to disable the probe of the NIC using hists to the PCI bus 
driver? I have addded hint.em.0.disable=1 but it does not help.

em0@pci0:2:0:0:	class=0x020000 card=0x10d315d9 chip=0x10d38086 rev=0x00 
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82574L Gigabit Network Connection'
    class      = network
    subclass   = ethernet

Any other suggestions appreciated.

/glz