Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264590AbTIIV0m (ORCPT ); Tue, 9 Sep 2003 17:26:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264492AbTIIVXk (ORCPT ); Tue, 9 Sep 2003 17:23:40 -0400 Received: from pc1-cwma1-5-cust4.swan.cable.ntl.com ([80.5.120.4]:49799 "EHLO dhcp23.swansea.linux.org.uk") by vger.kernel.org with ESMTP id S264500AbTIIVXJ (ORCPT ); Tue, 9 Sep 2003 17:23:09 -0400 Subject: Re: Determining pci bus from irq From: Alan Cox To: root@chaos.analogic.com Cc: Adam Litke , Linux Kernel Mailing List In-Reply-To: References: <1063123832.2037.40.camel@dyn318261bld.beaverton.ibm.com> <1063127380.30397.69.camel@dhcp23.swansea.linux.org.uk> Content-Type: text/plain Content-Transfer-Encoding: 7bit Message-Id: <1063142434.30981.19.camel@dhcp23.swansea.linux.org.uk> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.4 (1.4.4-5) Date: Tue, 09 Sep 2003 22:20:35 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 860 Lines: 19 On Maw, 2003-09-09 at 18:36, Richard B. Johnson wrote: > Unless you've got a 'scope. If a device is interrupting often > or if it can be made to interrupt. you can look at the pin on > the PCI card. For some reason, on ix86, the logical "pin" is > always "A", regardless of the device, so you only have one > interrupt line connected to each slot. On lap-tops, there is > often only one IRQ shared for everything IRQ9 for Compaq. Multifunction devices may well use more than INTA. A PC does normally use INTA for each device and barberpole the ABCD lines between slots Quad ethernet cards using ABCD seem common - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/