From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764904AbXJFSse (ORCPT ); Sat, 6 Oct 2007 14:48:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754782AbXJFSs1 (ORCPT ); Sat, 6 Oct 2007 14:48:27 -0400 Received: from idcmail-mo1so.shaw.ca ([24.71.223.10]:49381 "EHLO pd2mo2so.prod.shaw.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758888AbXJFSs0 (ORCPT ); Sat, 6 Oct 2007 14:48:26 -0400 Date: Sat, 06 Oct 2007 12:48:22 -0600 From: Robert Hancock Subject: Re: cx88 pci_abort messages In-reply-to: To: Scott Cc: linux-kernel@vger.kernel.org Message-id: <4707D876.8080306@shaw.ca> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7bit References: User-Agent: Thunderbird 2.0.0.6 (Windows/20070728) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Scott wrote: > > On Oct 4, 2007, at 11:52 AM, Scott wrote: > >> I'm having what I think is a PCI bus problem. >> >> I have a ASUS P5B Intel 965 motherboard and a DVICO Fusion HDTV5 RT >> adapter on the PCI bus. When this adapter is recording (anything) I see >> pci_abort messages repeating in the /var/log/messages file. As a result >> I see some minor video corruption during playback. I've installed the >> adapter into a PCI slot that shares an IRQ with the onboard USB. >> However, I've also disabled all USB support in BIOS, so the adapter is >> the only thing on the IRQ, and still see the same errors. >> >> Any suggestions for further troubleshooting? Is this a PCI bus quirk on >> this motherboard? A copy of my .config is at >> http://donpoo.net/kernel_config >> >> Oct 2 21:59:12 htpc cx88[0]: irq mpeg [0x80000] pci_abort* >> Oct 2 21:59:12 htpc cx88[0]/2-mpeg: general errors: 0x00080000 >> Oct 2 21:59:20 htpc cx88[0]: irq mpeg [0x80000] pci_abort* >> Oct 2 21:59:20 htpc cx88[0]/2-mpeg: general errors: 0x00080000 >> Oct 2 21:59:32 htpc cx88[0]: irq mpeg [0x80000] pci_abort* >> Oct 2 21:59:32 htpc cx88[0]/2-mpeg: general errors: 0x0008000 > > I was poking around the PCI bus with setpci/lspci last night and tried > adjusting the latency from 64 to 32. This didn't make a difference. I > also changed my core2duo speedstep governor from ondemand to performance > to prevent the CPUs from changing speed. I eventualy saw the same > pci_abort message but I might have seen less of them. > > Is there a way to log every device pci device that throws an interrupt? > I'm thinking if I could find out which pci device was stealing the > interrupt that I could disable it or look at the code and see what it > was doing. PCI aborts won't have anything to do with interrupts. It's a PCI DMA transfer that either the initiator (here, the TV card) or the target (the chipset host bridge) decided to puke on for some reason. Possibly parity errors? -- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/