Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933868AbYBOKy6 (ORCPT ); Fri, 15 Feb 2008 05:54:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759325AbYBOKyv (ORCPT ); Fri, 15 Feb 2008 05:54:51 -0500 Received: from ns2.suse.de ([195.135.220.15]:58989 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758893AbYBOKyv (ORCPT ); Fri, 15 Feb 2008 05:54:51 -0500 To: "Dan Gora" Cc: linux-kernel@vger.kernel.org Subject: Re: PCI Bursting with PIO From: Andi Kleen References: <4779de450802141928led16cebkfb989551eb88a8cb@mail.gmail.com> Date: Fri, 15 Feb 2008 11:54:50 +0100 In-Reply-To: <4779de450802141928led16cebkfb989551eb88a8cb@mail.gmail.com> (Dan Gora's message of "Thu\, 14 Feb 2008 19\:28\:55 -0800") Message-ID: User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 606 Lines: 19 "Dan Gora" writes: > > Is there any way to get PIO I assume you really mean MMIO, not PIO. PIO would be port IO. > to burst over the PCI bus in the read and > write direction? You should set the MMIO mapping to write combining using an MTRR You might need to add appropiate memory barriers if you rely on write ordering though. -Andi -- 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/