From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263555AbTDNQuN (for ); Mon, 14 Apr 2003 12:50:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263558AbTDNQuN (for ); Mon, 14 Apr 2003 12:50:13 -0400 Received: from pc2-cwma1-4-cust86.swan.cable.ntl.com ([213.105.254.86]:38586 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S263555AbTDNQuM (for ); Mon, 14 Apr 2003 12:50:12 -0400 Subject: Re: [PATCH] M68k IDE updates From: Alan Cox To: Geert Uytterhoeven Cc: Paul Mackerras , Linus Torvalds , Linux Kernel Development In-Reply-To: References: Content-Type: text/plain Content-Transfer-Encoding: 7bit Organization: Message-Id: <1050336224.25353.78.camel@dhcp22.swansea.linux.org.uk> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 (1.2.2-5) Date: 14 Apr 2003 17:03:45 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Llu, 2003-04-14 at 14:44, Geert Uytterhoeven wrote: > On 14 Apr 2003, Alan Cox wrote: > > On Llu, 2003-04-14 at 09:39, Geert Uytterhoeven wrote: > > > Indeed. Ataris and Q40/Q60s have byteswapped IDE busses, but they expect > > > on-disk data to be that way, for compatibility with e.g. TOS. > > > > That is a higher level problem. You need a byteswap mode for the loop device > > it seems. Then you can read atari disks on any box.. > > You're talking about a different problem. > > We want to read Atari disks on Ataris, too. You can initrd a loop over ide root on the Atari. I can see reasons (performance) you don't want to do that, and I'm quite happy for someone to split the mmio ops for data/control to clean that up.