From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261245AbULHQ0O (ORCPT ); Wed, 8 Dec 2004 11:26:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261252AbULHQ0O (ORCPT ); Wed, 8 Dec 2004 11:26:14 -0500 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:12207 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S261245AbULHQ0J (ORCPT ); Wed, 8 Dec 2004 11:26:09 -0500 Message-ID: <41B72B1E.5050307@pobox.com> Date: Wed, 08 Dec 2004 11:26:06 -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: Roy Sigurd Karlsbakk CC: linux-kernel@vger.kernel.org Subject: Re: DMA problems with ICH5 in ATA mode References: <62697744-490D-11D9-90F0-000D932A43BC@karlsbakk.net> In-Reply-To: <62697744-490D-11D9-90F0-000D932A43BC@karlsbakk.net> 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 Roy Sigurd Karlsbakk wrote: > hi > > I have a disk connected to one of the below controllers in ATA mode, but > I can't enable DMA on it. Intel ATA support is in kernel, but when > hdparm -d1 /dev/hdc I get the following (extracted from strace) > > write(4, " HDIO_SET_DMA failed: Operation "..., 46 HDIO_SET_DMA failed: > Operation not permitted You either need to (a) disable legacy (combined) mode, (b) use piix rather than generic IDE driver, or (c) enable libata for your SATA. Jeff