Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753038AbYABCaK (ORCPT ); Tue, 1 Jan 2008 21:30:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753792AbYABC3z (ORCPT ); Tue, 1 Jan 2008 21:29:55 -0500 Received: from terminus.zytor.com ([198.137.202.10]:39532 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752584AbYABC3y (ORCPT ); Tue, 1 Jan 2008 21:29:54 -0500 Message-ID: <477AF679.1060900@zytor.com> Date: Tue, 01 Jan 2008 18:27:05 -0800 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.9 (X11/20071115) MIME-Version: 1.0 To: Christer Weinigel CC: Rene Herman , Alan Cox , "David P. Reed" , Rene Herman , Ingo Molnar , Paul Rolland , Pavel Machek , Thomas Gleixner , linux-kernel@vger.kernel.org, Ingo Molnar , rol@witbe.net Subject: Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override. References: <4762C551.5070003@zytor.com> <20071214210652.GB28793@elf.ucw.cz> <4763001A.1070102@zytor.com> <20071214232955.545ab809@the-village.bc.nu> <20071215080831.404cdb32@tux.DEF.witbe.net> <47638C8C.2090604@gmail.com> <476438B4.2020600@zytor.com> <476462BE.3030701@gmail.com> <4764687D.6080609@zytor.com> <476524DB.7020806@gmail.com> <20071216152250.GA21245@elte.hu> <4765D43E.1010800@gmail.com> <4765D95C.4010404@zytor.com> <4765DCB0.8030901@gmail.com> <4765EE7F.80002@zytor.com> <47667366.7010405@gmail.com> <4766AE88.4080904@zytor.com> <4766D175.7040807@reed.com> <20071217212509.5edaa372@the-village.bc.nu> <477A634C.8040000@reed.com> <20080101161557.3ce2d5f8@the-village.bc.nu> <477AAD7B.5040405@zytor.com> <477AB204.3070904@keyaccess.nl> <477AB433.5070506@zytor.com> <477AC02A.40108@keyaccess.nl> <477AC130.3050901@zytor.com> <477AC8BA.2050503@keyaccess.nl> <20080102015539.58d80332@weinigel.se> In-Reply-To: <20080102015539.58d80332@weinigel.se> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1091 Lines: 24 Christer Weinigel wrote: > > Both 0xed and 0xf0 are mapped to internal functions on the AMD Elan > SC400 processor. It is an AMD 486 based system on a chip and since AMD > just knew that it would never have a math coprocessor, they reused the > 0xf0-0xf2 range for the PCMCIA controller. I guess the AMD Elan SC500 > will have similar problems. > > I seem to recall that back when I was working with the Elan SC400 > (sometime around 1998?) there were discussions about finding an > alternate delay port because outb to 0x80 messed up the debug port. I > think the Elan stopped those discussions because just about every port > on the Elan was reused for some alternate purpose. > Yeah, the Elan is not supportable anyway without a CONFIG option (it's broken in so many ways), so it doesn't really apply. It's a fuckwit design. -hpa -- 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/