From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263427AbVGASj7 (ORCPT ); Fri, 1 Jul 2005 14:39:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263428AbVGASj7 (ORCPT ); Fri, 1 Jul 2005 14:39:59 -0400 Received: from twilight.ucw.cz ([81.30.235.3]:49595 "EHLO suse.cz") by vger.kernel.org with ESMTP id S263427AbVGASj5 (ORCPT ); Fri, 1 Jul 2005 14:39:57 -0400 Date: Fri, 1 Jul 2005 20:40:09 +0200 From: Vojtech Pavlik To: "Richard B. Johnson" Cc: christos gentsis , linux-kernel@vger.kernel.org Subject: Re: PCI-X support Message-ID: <20050701184009.GA2034@ucw.cz> References: <42C58203.40606@yahoo.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.6i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 01, 2005 at 02:00:15PM -0400, Richard B. Johnson wrote: > On Fri, 1 Jul 2005, christos gentsis wrote: > > >Hello > > > >I have a friend that his Msc project is related with the development > >over a PCI-X card. the problem is that he do not know if the Linux > >kernel support the PCI-X bus. i try to find something related with the > >PCI-X in the kernel source but i didn't found any file or folder with a > >relevant name... Does any one know if PCI-X bus supported from Linux and > >if no how can he patch the kernel to support it...? > > > >Thanks > >Chris > > Sure PCI-X is just PCI/66 with 64-bits. It's just like PCI/66 > from a software standpoint. Not really. 64-bit 66MHz PCI is normal PCI, within the PCI 2.1 spec. Common PCI-X is running at 133MHz, 64-bit wide. You're correct, though, that from the software standpoint it's not much different and Linux supports it natively. I'm not sure about MSI-X extensions, though. -- Vojtech Pavlik SuSE Labs, SuSE CR