From owner-cvs-src@FreeBSD.ORG Sun Feb 26 07:08:13 2006 Return-Path: X-Original-To: cvs-src@freebsd.org Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9682016A420; Sun, 26 Feb 2006 07:08:13 +0000 (GMT) (envelope-from nate@root.org) Received: from ylpvm01.prodigy.net (ylpvm01-ext.prodigy.net [207.115.57.32]) by mx1.FreeBSD.org (Postfix) with ESMTP id CE34543D48; Sun, 26 Feb 2006 07:08:12 +0000 (GMT) (envelope-from nate@root.org) Received: from pimout5-ext.prodigy.net (pimout5-int.prodigy.net [207.115.4.21]) by ylpvm01.prodigy.net (8.12.10 outbound/8.12.10) with ESMTP id k1Q78B2H016232; Sun, 26 Feb 2006 02:08:12 -0500 X-ORBL: [71.139.114.10] Received: from [10.0.0.240] (ppp-71-139-114-10.dsl.snfc21.pacbell.net [71.139.114.10]) by pimout5-ext.prodigy.net (8.13.4 outbound domainkey aix/8.13.4) with ESMTP id k1Q786jj185668; Sun, 26 Feb 2006 02:08:06 -0500 Message-ID: <440153CD.9050904@root.org> Date: Sat, 25 Feb 2006 23:07:57 -0800 From: Nate Lawson User-Agent: Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: Kevin Oberman References: <20060226014110.A936F4504C@ptavv.es.net> In-Reply-To: <20060226014110.A936F4504C@ptavv.es.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org, Colin Percival Subject: Re: cvs commit: src/sys/i386/cpufreq est.c X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 26 Feb 2006 07:08:13 -0000 Kevin Oberman wrote: >> Date: Sat, 25 Feb 2006 15:42:06 -0800 >> From: Colin Percival >> >> Kevin Oberman wrote: >>>> cperciva 2006-02-25 04:55:39 UTC >>>> Log: >>>> Add frequency-voltage tables for Intel 778, 758, 773, 753, and 733J >>>> processors. >>>> >>>> Obtained from: Intel Datasheet 302189-008 >>> Is this a new datasheet or did someone find it in some odd corner of >>> Intel land? I'll admit that I'm baffled as to why Intel seemed to keep >>> this information under wraps for so long. >> Intel updates their datasheets from time to time -- the information for >> these processors was added in a new version of an old datasheet. Intel >> still hasn't released the frequency/voltage tables for their 7x0 series >> processors or the formula used to compute them. > > Ack! I was not paying nearly enough attention! Still no joy for my 760 > CPU, then. > > Thanks anyway. Hopefully some day it will be available. I still don't > understand why Intel would withhold this sort of information on an > out-of-date series of chips from those who would buy the chips! (Or, at > least system containing them.) I'm not defending this, but I think I know what happened. The voltage to VID translation table was probably only present in the BIOS Writer's Guide. This is because in the past, most of the code to use it was in the BIOS and the OS can control it via ACPI. Intel doesn't publish the BIOS Writer's Guides. To release the info, they probably had to extract just that table, get approval, etc. The table itself doesn't seem that secret to me but I guess the bureaucracy could be the real problem. -- Nate