From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264542AbUEELUx (ORCPT ); Wed, 5 May 2004 07:20:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264569AbUEELUx (ORCPT ); Wed, 5 May 2004 07:20:53 -0400 Received: from gizmo02bw.bigpond.com ([144.140.70.12]:28593 "HELO gizmo02bw.bigpond.com") by vger.kernel.org with SMTP id S264542AbUEELUd (ORCPT ); Wed, 5 May 2004 07:20:33 -0400 From: Ross Dickson Reply-To: ross@datscreative.com.au Organization: Dat's Creative Pty Ltd To: "Allen Martin" , Subject: Re: IO-APIC on nforce2 [PATCH] + [PATCH] for nmi_debug=1 + [PATCH] for idle=C1halt, 2.6.5 Date: Wed, 5 May 2004 21:24:55 +1000 User-Agent: KMail/1.5.1 Cc: "Len Brown" , Jesse Allen , "Prakash K. Cheemplavam" , Craig Bradney , christian.kroener@tu-harburg.de, "Maciej W. Rozycki" , Jamie Lokier , Daniel Drake , Ian Kumlien References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200405052124.55515.ross@datscreative.com.au> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday 04 May 2004 08:09, Allen Martin wrote: > I'm happy to be able to make this information public to the Linux > community. This information has been previously released to BIOS / > board vendors as an appnote, but in the interest of getting a workaround > into the hands of users the quickest we're making it public for possible > inclusion into the Linux kernel. > Thank you very much Allen for being involved in linux development. Obsolecense is the best ending a temporary workaround could have. I think I have found the problem with the Albatron KM18G-pro Mobos I have been using. They can't see through their Windows.??!@@#$$%%&*& ML1-0505-19 Re: Cause of lockups with KM-18G Pro is incorrect pci reg values in bios -please update bios From: "dr.pro" To: Date: Today 17:38:08 Dear Ross, Thank you very much for contacting Albatron technical support. KM18G Pro has been proved under Windows 98SE/ME/2000/XP but Linux, so you may encounter problems with it under Linux. We suggest you use Windows 98SE/ME/2000/XP for the stable performance. Sorry for the inconvenience and please kindly understand it. Please let us know if you have any question. Best regards, Dr.Pro ----- Original Message ----- From: "Ross Dickson" To: Sent: Tuesday, May 04, 2004 8:19 PM Subject: Cause of lockups with KM-18G Pro is incorrect pci reg values in bios -please update bios > Greetings, > > The following is required for Linux to function correctly on your KM-18G Pro. > > Allen Martin of Nvidia explains. > > I'm happy to be able to make this information public to the Linux > community. This information has been previously released to BIOS / > board vendors as an appnote, but in the interest of getting a workaround > into the hands of users the quickest we're making it public for possible > inclusion into the Linux kernel. > > > Problem: > C1 Halt Disconnect problem on nForce2 systems > > Description: > A hang is caused when the CPU generates a very fast CONNECT/HALT cycle > sequence. > > Workaround: > Set the SYSTEM_IDLE_TIMEOUT to 80 ns. This allows the state-machine and > timer to return to a proper state within 80 ns of the CONNECT and probe > appearing together. > > Since the CPU will not issue another HALT within 80 ns of the initial > HALT, the failure condition is avoided. > > This will require changing the value for register at bus:0 dev:0 func:0 > offset 6c. > > Chip Current Value New Value > C17 1F0FFF01 1F01FF01 > C18D 9F0FFF01 9F01FF01 > > Northbridge chip version may be determined by reading the PCI revision > ID (offset 8) of the host bridge at bus:0 dev:0 func:0. C1 or greater > is C18D. > > Regards > Ross Dickson > >