From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261495AbULUTdh (ORCPT ); Tue, 21 Dec 2004 14:33:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261422AbULUTdg (ORCPT ); Tue, 21 Dec 2004 14:33:36 -0500 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:9880 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S261495AbULUTcU (ORCPT ); Tue, 21 Dec 2004 14:32:20 -0500 Message-ID: <41C87A40.40308@pobox.com> Date: Tue, 21 Dec 2004 14:32:16 -0500 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20040922 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Jan Marek CC: linux-kernel@vger.kernel.org Subject: Re: 2.6.9: VIA sATA cannot switch to 32bit I/O? References: <20041221144119.GA21507@hazard.jcu.cz> In-Reply-To: <20041221144119.GA21507@hazard.jcu.cz> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jan Marek wrote: > Hallo l-k, > > I have problem with my Abit AV8 MB (s939 with VIA KT800Pro chipset and > VIA sATA controller and 120GB Seagate Barracuda disk): I cannot switch > 32bit access to disk to on?! I'm using libata driver... > > When I use hdparm -c1 /dev/sda, I've got some error message (sorry, I > haven't this message here, it's my home computer). Therefore disk is too > slow to putting data for burning CD's and I need 'burnfree' feature... > > Please, have anyone advice for me to speedup disk access, or is it > possible? This will not speed up disk access. libata uses 16-bit I/O unconditionally for PIO data transfers... ...but you are using DMA for data transfers, which is light years faster than PIO anyway. Jeff