From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261679AbVBWXYc (ORCPT ); Wed, 23 Feb 2005 18:24:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261705AbVBWXX6 (ORCPT ); Wed, 23 Feb 2005 18:23:58 -0500 Received: from hyperion.affordablehost.com ([12.164.25.86]:31438 "EHLO hyperion.affordablehost.com") by vger.kernel.org with ESMTP id S261679AbVBWXU4 (ORCPT ); Wed, 23 Feb 2005 18:20:56 -0500 Subject: Re: Help enabling PCI interrupts on Dell/SMP and Sun/SMP systems. From: Alan Kilian To: Peter Chubb Cc: linux-kernel@vger.kernel.org In-Reply-To: <16925.2739.232237.418632@wombat.chubb.wattle.id.au> References: <1109190273.9116.307.camel@desk> <1109197066.9116.319.camel@desk> <16925.2739.232237.418632@wombat.chubb.wattle.id.au> Content-Type: text/plain Date: Wed, 23 Feb 2005 17:24:58 -0600 Message-Id: <1109201098.9116.330.camel@desk> Mime-Version: 1.0 X-Mailer: Evolution 2.0.2 (2.0.2-3) Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - hyperion.affordablehost.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - bobodyne.com X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > Alan> kernel: SSE: Found a DeCypher card. kernel: ACPI: PCI > Alan> interrupt 0000:13:03.0[A] -> GSI 36 (level, low) -> IRQ 217 > > If ACPI has set this device up to use interrupt 217, why are you > registering it on IRQ 5? > Peter, Maybe that's it. I ask the card which interrupt line it was given at boot-time: pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &softp->interrupt_line); Then I request an IRQ: request_irq(softp->interrupt_line, sseintr, SA_INTERRUPT, "sse", softp); I don't know who exactly is assigning IRQ 217, and I don't know where I could read that value. Are you suggesting I should call request_irq(217, sseintr, SA_INTERRUPT, "sse", softp); Maybe you are on to the problem. I found out that if I boot with "pci-noapic" that everyting works on the Sun machine!!! -Alan -- - Alan Kilian