From owner-freebsd-stable@FreeBSD.ORG Mon Oct 23 12:25:58 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6D87D16A412; Mon, 23 Oct 2006 12:25:58 +0000 (UTC) (envelope-from imb@protected-networks.net) Received: from aaron.protected-networks.net (aaron.protected-networks.net [202.12.127.66]) by mx1.FreeBSD.org (Postfix) with ESMTP id 24D0A43DEC; Mon, 23 Oct 2006 12:24:55 +0000 (GMT) (envelope-from imb@protected-networks.net) Received: from localhost (localhost [127.0.0.1]) by aaron.protected-networks.net (Postfix) with ESMTP id E6EC9C656; Mon, 23 Oct 2006 08:24:40 -0400 (EDT) Received: from [192.168.1.10] (socker.hsd1.ma.comcast.net [24.218.145.140]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "Iain Michael Butler", Issuer "Protected Networks Certificate Authority" (verified OK)) (Authenticated sender: imb@protected-networks.net) by aaron.protected-networks.net (Postfix) with ESMTP id 0C96EC49B; Mon, 23 Oct 2006 08:24:35 -0400 (EDT) DomainKey-Signature: a=rsa-sha1; s=200509; d=protected-networks.net; c=nofws; q=dns; h=message-id:date:from:user-agent:mime-version:to:cc:subject: references:in-reply-to:x-enigmail-version:openpgp:content-type:content-transfer-encoding; b=hz+C1CZukpzOTA7IlSIPM1JADal4u2EOsnJwQqrXUMqxCDhyVJ1fjkJKr1fbo0mHt n/mW4H3wzmePwalD108YGn/qYW8X6p7F2eO+K6E8xuj48pSuSeNKIyXxQVabhwf Message-ID: <453CB483.7050809@protected-networks.net> Date: Mon, 23 Oct 2006 08:24:35 -0400 From: Michael Butler User-Agent: Thunderbird 1.5.0.7 (X11/20061019) MIME-Version: 1.0 To: "O. Hartmann" References: <453CB1F0.2060901@uni-mainz.de> In-Reply-To: <453CB1F0.2060901@uni-mainz.de> X-Enigmail-Version: 0.94.0.0 OpenPGP: id=0442D492 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Adrian Chadd , FreeBSD Stable Subject: Re: FreeBSD 6.x + SATA NCQ? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Oct 2006 12:25:58 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 O. Hartmann wrote: > Adrian Chadd wrote: >> Is there support for SATA tagged queueing in FreeBSD-6? Any ideas on >> which chipsets would support it or how to determine whether FreeBSD is >> using it? >> > As I know, this is on one hand dependend on the used chipset and on > the other haned dependend on the ATA driver. Those chipsets with NCQ > AND AHCI (mostly Intel ICH based chipsets) should be managed and > addressed by a suitable driver (as far as I know not yet available > for FreeBSD 6.X). > As someone can read at the nVidia homepage, their nForce4-SLI > chipsets also supports NCQ, but it is proprietary thing, not > commonly accessible via AHCI. And due to the lack of information, > like most of nVidias goodies for computers, there is no access to > this feature via the open source way. Sadly, a good proportion of current laptops fitted with SATA-150 drives and based on the the Intel ICH-7 chipset do not fully initialize AHCI mode in the BIOS. Specifically, no resources are allocated to supporting it. This complicates any potential driver implementation somewhat :-( Michael -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFPLSDQv9rrgRC1JIRAlvmAJ4+iYPifYnWLRXdQ+aCfPVlzP5dTQCgxteH mOyOFPSx0tZ+DHGmFKhckrM= =Ymek -----END PGP SIGNATURE-----