From owner-freebsd-arch@FreeBSD.ORG  Wed Jan 14 07:43:08 2009
Return-Path: <owner-freebsd-arch@FreeBSD.ORG>
Delivered-To: freebsd-arch@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 7CA29106564A
	for <freebsd-arch@freebsd.org>; Wed, 14 Jan 2009 07:43:08 +0000 (UTC)
	(envelope-from stb@lassitu.de)
Received: from koef.zs64.net (koef.zs64.net [212.12.50.230])
	by mx1.freebsd.org (Postfix) with ESMTP id 16E3F8FC13
	for <freebsd-arch@freebsd.org>; Wed, 14 Jan 2009 07:43:07 +0000 (UTC)
	(envelope-from stb@lassitu.de)
Received: from localhost by koef.zs64.net (8.14.3/8.14.3) with ESMTP id
	n0E7HpCq086803
	(version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO);
	Wed, 14 Jan 2009 08:17:51 +0100 (CET)
	(envelope-from stb@lassitu.de) (authenticated as stb)
Message-Id: <FC7CC7A3-18D5-4408-8F52-62B9DF189A74@lassitu.de>
From: Stefan Bethke <stb@lassitu.de>
To: Andriy Gapon <avg@icyb.net.ua>
In-Reply-To: <496C8C6A.2030708@icyb.net.ua>
Content-Type: text/plain; charset=WINDOWS-1252; format=flowed; delsp=yes
Content-Transfer-Encoding: quoted-printable
Mime-Version: 1.0 (Apple Message framework v930.3)
Date: Wed, 14 Jan 2009 08:17:50 +0100
References: <496C8C6A.2030708@icyb.net.ua>
X-Mailer: Apple Mail (2.930.3)
Cc: freebsd-arch@freebsd.org
Subject: Re: smb(4): address format
X-BeenThere: freebsd-arch@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussion related to FreeBSD architecture <freebsd-arch.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arch>
List-Post: <mailto:freebsd-arch@freebsd.org>
List-Help: <mailto:freebsd-arch-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 14 Jan 2009 07:43:09 -0000

Am 13.01.2009 um 13:43 schrieb Andriy Gapon:

> So, in practice, there two conventions of specifying a slave address:
> either as 0XXXXXXXb or XXXXXXX0b.

Device datasheets generally specify the hard-wired or configurable =20
address as a bit string, with a slight preference to format that as =20
bbbb bbb.

> In wider world 0XXXXXXXb format seems to be preferred, Linux also =20
> sticks
> to it.

I personally find having the address right-aligned a sensible choice.  =20=

I think of the address as logical unit, and normally would rather have =20=

the SMBus bit banging abstracted away by the driver/hardware.


=80 0.02,
Stefan

--=20
Stefan Bethke <stb@lassitu.de>   Fon +49 151 14070811