From owner-freebsd-current@FreeBSD.ORG  Wed Jun 25 10:40:58 2014
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@FreeBSD.org
Received: by hub.freebsd.org (Postfix, from userid 1033)
 id 4D66FD74; Wed, 25 Jun 2014 10:40:58 +0000 (UTC)
Date: Wed, 25 Jun 2014 10:40:58 +0000
From: Alexey Dokuchaev <danfe@FreeBSD.org>
To: Kurt Jaeger <lists@opsec.eu>
Subject: Re: SMBus controller
Message-ID: <20140625104058.GA28406@FreeBSD.org>
References: <1402772923.1120.13.camel@bruno>
 <20140614193918.GH2341@home.opsec.eu>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20140614193918.GH2341@home.opsec.eu>
User-Agent: Mutt/1.5.23 (2014-03-12)
Cc: freebsd-current <freebsd-current@FreeBSD.org>
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
 <freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-current>, 
 <mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current/>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
 <mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 25 Jun 2014 10:40:58 -0000

On Sat, Jun 14, 2014 at 09:39:18PM +0200, Kurt Jaeger wrote:
> http://en.wikipedia.org/wiki/System_Management_Bus
> 
> You can read some system status values (CPU temp etc).
> 
> In the ports, check sysutils/xmbmon or sysutils/healthd
> whether it detects anything.

It can also be used to talk to one's computer memory (sysutils/i2c-tools),
something like this:

  # kldload smb.ko ichsmb.ko
  # cd /usr/ports/sysutils/i2c-tools && make extract
  # perl work/i2c-tools-3.1.0/eeprom/decode-dimms

./danfe