From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nate Lawson Subject: Re: Via 694X based SMB boards (Apollo Pro133A) Date: Thu, 15 Jan 2004 14:13:33 -0800 (PST) Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20040115141018.F72769@root.org> References: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Return-path: In-Reply-To: Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Dino Klein Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org On Thu, 15 Jan 2004, Dino Klein wrote: > I'm playing around with my Abit VP6 board - trying to get it into S3, and monkeying around with the Cx states. > I'm having a problem figuring out how the Via VT82C686B chipset works with two processors, since a datasheet I found for it > specifies only one P_BLK. Perhaps I have an older datasheet... > > Anyway, unless someone tells me that a the Apollo Pro133A chipset doesn't properly support SMP, I would like to ask other people out > there who have 694X(DP) SMP board to take a look at their DSDT and send me the lines containing the processors definitions. If you > don't know how to find it, just send me the whole thing, and I'll figure it out; maybe this way I'll figure out the address of the > other P_BLK. If you're looking to do throttling, some SMP boards support it. The most common way is with a shared P_BLK. Either both Processor objects in the ASL will have the same P_BLK or one will have it and the other will have a NULL entry. Either way, setting throttling through the P_BLK _ONCE_ (not once per processor) sets the throttling level. I've never seen an SMP board with separate P_BLKs per processor. I've also never seen an SMP board that supported C2 or higher via a shared P_LVL2 register or separate _CST objects if it had different per-processor P_LVL2 registers. If anyone is aware of one of these, I'm very interested. -Nate ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn