From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761488AbYBOTIS (ORCPT ); Fri, 15 Feb 2008 14:08:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755770AbYBOTII (ORCPT ); Fri, 15 Feb 2008 14:08:08 -0500 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:35443 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1755819AbYBOTIG (ORCPT ); Fri, 15 Feb 2008 14:08:06 -0500 Date: Fri, 15 Feb 2008 19:00:11 +0000 From: Alan Cox To: "Dan Gora" Cc: linux-kernel@vger.kernel.org Subject: Re: PCI Bursting with PIO Message-ID: <20080215190011.56e4080c@core> In-Reply-To: <4779de450802151000o2c06df0fq6d0daa22c43b935b@mail.gmail.com> References: <4779de450802141928led16cebkfb989551eb88a8cb@mail.gmail.com> <20080215130244.780285cf@core> <4779de450802151000o2c06df0fq6d0daa22c43b935b@mail.gmail.com> X-Mailer: Claws Mail 3.2.0 (GTK+ 2.12.5; x86_64-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 15 Feb 2008 10:00:28 -0800 "Dan Gora" wrote: > On Fri, Feb 15, 2008 at 5:02 AM, Alan Cox wrote: > > > Is there any way to get PIO to burst over the PCI bus in the read and > > > write direction? My device has 4 BAR registers, but the area where I > > > > I think you are doign about as well as the X folks did when they spent > > time on trying to optimise pio transfers to and from graphics card RAM. > > > > That's good to know. Do you have a link or anything to their > discussion or some key words that I could hunt it down? It was some time ago but a look at the X tree will find you the code. It's basically the same as you did - using MMX.