From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261455AbVFOAwN (ORCPT ); Tue, 14 Jun 2005 20:52:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261456AbVFOAwM (ORCPT ); Tue, 14 Jun 2005 20:52:12 -0400 Received: from one.firstfloor.org ([213.235.205.2]:55015 "EHLO one.firstfloor.org") by vger.kernel.org with ESMTP id S261455AbVFOAwB (ORCPT ); Tue, 14 Jun 2005 20:52:01 -0400 To: Jon Smirl Cc: Bob Picco , Andrew Morton , lkml Subject: Re: Fwd: hpet patches References: <88056F38E9E48644A0F562A38C64FB6004F7837A@scsmsx403.amr.corp.intel.com> <9e47339105061416365f4cd1eb@mail.gmail.com> From: Andi Kleen Date: Wed, 15 Jun 2005 02:51:55 +0200 In-Reply-To: <9e47339105061416365f4cd1eb@mail.gmail.com> (Jon Smirl's message of "Tue, 14 Jun 2005 19:36:42 -0400") Message-ID: User-Agent: Gnus/5.110002 (No Gnus v0.2) Emacs/21.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jon Smirl writes: > On 6/14/05, Pallipadi, Venkatesh wrote: >> HPET device itself can be there. But, it can appear in different >> addresses. Most commonly used address is 0xfed00000. But, it can be >> different as well. > > Does Intel build different versions of something like an 82801EB with > the HPET at different addresses and still have the same part number? Sometimes the address can be configured in the chipset and HPET also be disabled. So the only reliable way would be to check the chipset registers for each chipset. Unfortunately some are undocumented (e.g. i've been trying to figure that out for Nvidia for quite some time to no avail :/) -Andi