From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ducrot Bruno Subject: Re: IBM R40 FFixedHW register? Date: Wed, 22 Oct 2003 11:56:56 +0200 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20031022095656.GN13989@poupinou.org> References: <20031021153556.B56816@root.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20031021153556.B56816-Y6VGUYTwhu0@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: Nate Lawson Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org On Tue, Oct 21, 2003 at 03:39:55PM -0700, Nate Lawson wrote: > I'm testing out my new cpu driver for FreeBSD and came across an > interesting case in supporting Px states. They work great on several > laptops but the R40 can't set Px states. I looked at the ASL and found > that the control/status register pair is FFixedHW. > > Return (Package (0x02) > { > ResourceTemplate () > { > Register (FFixedHW, 0x40, 0x00, 0x0000000000000199) > }, > > ResourceTemplate () > { > Register (FFixedHW, 0x10, 0x00, 0x0000000000000198) > } > } > > I guess I have to find the datasheet for that model to figure out how to > access those registers. Anyone come across this before? What space are > those actually in (IO, Memory, ??). The register widths are also strange > (64 and 16 bits). > They are MSRs for Pentium-M found in Centrino platforms, but acpi spec would only say you that you have to contact the CPU vendor. -- Ducrot Bruno -- Which is worse: ignorance or apathy? -- Don't know. Don't care. ------------------------------------------------------- This SF.net email is sponsored by OSDN developer relations Here's your chance to show off your extensive product knowledge We want to know what you know. Tell us and you have a chance to win $100 http://www.zoomerang.com/survey.zgi?HRPT1X3RYQNC5V4MLNSV3E54