From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761298AbZEAN73 (ORCPT ); Fri, 1 May 2009 09:59:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758429AbZEAN7T (ORCPT ); Fri, 1 May 2009 09:59:19 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:53196 "EHLO vavatch.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757463AbZEAN7T (ORCPT ); Fri, 1 May 2009 09:59:19 -0400 Date: Fri, 1 May 2009 14:59:09 +0100 From: Matthew Garrett To: Theodore Tso , Matthew Wilcox , Robert Hancock , Alex Buell , Jeff Garzik , linux-kernel@vger.kernel.org, Linux IDE mailing list Subject: Re: No NCQ support on X61s Ultrabay? (Intel ICH8 SATA controller question) Message-ID: <20090501135908.GA17872@srcf.ucam.org> References: <49F90CA2.4080602@garzik.org> <20090430083309.437f9248@lithium.local.net> <20090430113445.GA4809@mit.edu> <20090430113814.GB4809@mit.edu> <49FA55A0.8080303@gmail.com> <20090501025132.GA7275@mit.edu> <49FA78B4.2070900@gmail.com> <20090501113533.GB10704@linux.intel.com> <20090501131459.GA7681@mit.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090501131459.GA7681@mit.edu> User-Agent: Mutt/1.5.17+20080114 (2008-01-14) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@codon.org.uk X-SA-Exim-Scanned: No (on vavatch.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 01, 2009 at 09:14:59AM -0400, Theodore Tso wrote: > Oh.... and I suspect I know why they did it; I'm guessing they wanted > to support PATA Ultrabay devices for backwards compatibility on the > X60, and perhaps they were running out of connector pins on the > docking station (the Ultrabay slot is on the X61's "media slice"), and > they didn't have enough wires to run both PATA and SATA interfaces to > the docking station, *and* they wanted to use the same docking station > for the X60 and X61 Thinkpads. SATA ultrabays have a standard SATA connector, which is in the same physical location as the PATA connector on the older bays - it's not possible for a single bay to support both PATA and SATA devices. Bear in mind that the usual use for one of these bays is for optical drives, and SATA slimline drives have only started appearing recently. -- Matthew Garrett | mjg59@srcf.ucam.org