Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266333AbUJIAfS (ORCPT ); Fri, 8 Oct 2004 20:35:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266341AbUJIAfS (ORCPT ); Fri, 8 Oct 2004 20:35:18 -0400 Received: from rproxy.gmail.com ([64.233.170.198]:10423 "EHLO mproxy.gmail.com") by vger.kernel.org with ESMTP id S266333AbUJIAfM (ORCPT ); Fri, 8 Oct 2004 20:35:12 -0400 Message-ID: <58cb370e04100817353254b8cd@mail.gmail.com> Date: Sat, 9 Oct 2004 02:35:11 +0200 From: Bartlomiej Zolnierkiewicz Reply-To: Bartlomiej Zolnierkiewicz To: Ken Moffat Subject: Re: Problem with ide=nodma Cc: linux-kernel@vger.kernel.org In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit References: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1155 Lines: 28 On Sat, 9 Oct 2004 00:32:01 +0100 (BST), Ken Moffat wrote: > Hi, > > I'm trying a sii 0680 disk controller at the moment, as a possible > workaround for some via southbridge problems (this is on a ppc which > isn't yet supported by the official kernels, but it has been stable here > since 2.6.7 and looks nearly ready for a first review). Unfortunately, > DMA is a big no go at the moment so I have to pass ide=nodma in the > bootargs. > > I've got the drives plugged into the sii card, and ide=reverse is doing > its job. But although dmesg shows that dma has been turned off, Is it possible that you are reading it wrong? > /proc/ide/hda/settings and hdparm show that dma is in use. This is in > 2.6.9-rc3. > > Doesn't ide=nodma work for off-board chipsets ? siimage host driver doesn't respect "ide=nodma". You can hack siimage.c and comment out "hwif->autodma = 1". - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/