From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 1 Jun 2001 00:41:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 1 Jun 2001 00:41:44 -0400 Received: from panic.ohr.gatech.edu ([130.207.47.194]:37528 "HELO havoc.gtf.org") by vger.kernel.org with SMTP id ; Fri, 1 Jun 2001 00:41:26 -0400 Message-ID: <3B171CF1.7F623441@mandrakesoft.com> Date: Fri, 01 Jun 2001 00:41:21 -0400 From: Jeff Garzik Organization: MandrakeSoft X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.4.5-pre6 i686) X-Accept-Language: en MIME-Version: 1.0 To: Manfred Spraul Cc: thunder7@xs4all.nl, linux-kernel@vger.kernel.org Subject: Re: [lkml]Re: interrupt problem with MPS 1.4 / not with MPS 1.1 ? In-Reply-To: <3B16A7E3.1BD600F3@colorfullife.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Manfred Spraul wrote: > > > > > I know that with MPS 1.4, the USB controller finds itself at an > > unshared interrupt 19. I can't reboot at the moment to check. > > > lspci -vxxx -s 00:07.0 > > the APIC sits in the southbridge. > the low 2 bits of offset 0x58 must be set [route USB IRQ to APIC], and > > lspci -vx -s 00:07.2 > > offset 0x3C must be set to 3 [19 & 15] > > There was some discussion about the same problem with the sound part of > the southbridge. If an IO-APIC is present, 2.4.5 automatically routes all Via IRQs to external APIC. See quirk_via_ioapic in drivers/pci/quirks.c. I have received reports that MPS1.1 works on SMP Via boards, while MPS1.4 kills it. -- Jeff Garzik | Disbelief, that's why you fail. Building 1024 | MandrakeSoft |