From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Wilcox Subject: Re: No NCQ support on X61s Ultrabay? (Intel ICH8 SATA controller question) Date: Fri, 1 May 2009 04:35:33 -0700 Message-ID: <20090501113533.GB10704@linux.intel.com> 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> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mga10.intel.com ([192.55.52.92]:4655 "EHLO fmsmga102.fm.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752941AbZEALfe (ORCPT ); Fri, 1 May 2009 07:35:34 -0400 Content-Disposition: inline In-Reply-To: <49FA78B4.2070900@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Robert Hancock Cc: Theodore Tso , Alex Buell , Jeff Garzik , linux-kernel@vger.kernel.org, Linux IDE mailing list On Thu, Apr 30, 2009 at 10:21:08PM -0600, Robert Hancock wrote: > I'm suspecting that that Ultrabay slot might be using the PATA ports on > the chipset, with a PATA-SATA bridge chip or something. I haven't seen > an Intel chipset with some SATA ports using AHCI and some in PIIX mode > before, the ones I've seen with both had the PIIX mode driving PATA > ports. If it is indeed bridged through PATA on that laptop, there's no > way you're going to get any NCQ support on that slot. > > I don't know why Lenovo would do that, as it would kind of cripple SATA > drives in that slot, but hardware people do some bizarre things > sometimes.. I have to agree with Robert. If you look at the ich8 data sheet (313056-003), the mobile version has 3 ATA ports and 1 IDE port "that can be electrically isolated". See pages 41, 43, and 50-51. on page 41, it says the IDE port has "Tri-state modes to enable swap bay". So I don't blame Lenovo for hooking up the Ultrabay slot using the IDE port. They were pretty much told to do it.