From owner-freebsd-arch@FreeBSD.ORG Sat Aug 8 21:39:57 2009 Return-Path: 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 5A75E1065672; Sat, 8 Aug 2009 21:39:57 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from cmail.optima.ua (cmail.optima.ua [195.248.191.121]) by mx1.freebsd.org (Postfix) with ESMTP id B1E858FC15; Sat, 8 Aug 2009 21:39:56 +0000 (UTC) Received: from [212.86.226.226] (account mav@alkar.net HELO mavbook.mavhome.dp.ua) by cmail.optima.ua (CommuniGate Pro SMTP 5.2.9) with ESMTPSA id 251041323; Sun, 09 Aug 2009 00:39:53 +0300 Message-ID: <4A7DF076.4070203@FreeBSD.org> Date: Sun, 09 Aug 2009 00:39:02 +0300 From: Alexander Motin User-Agent: Thunderbird 2.0.0.21 (X11/20090405) MIME-Version: 1.0 To: freebsd-hardware@freebsd.org, freebsd-arch@freebsd.org Content-Type: text/plain; charset=KOI8-R; format=flowed Content-Transfer-Encoding: 7bit Cc: Subject: Do we still need ATA disk CHS addressing? X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 08 Aug 2009 21:39:57 -0000 While preparing wrapping ATA(4) low-level drivers code into CAM SIM, I would like to remove CHS addressing support to make code cleaner. CHS addressing is officially declared obsoleted and replaced by LBA. Since ATA/ATAPI-6 specification (October 2001) it is even no longer documented. Have anybody seen ATA drive without LBA support in last years? Any other objections against removing it? -- Alexander Motin