From patchwork Tue Sep 23 15:43:23 2008 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan-Bernd Themann X-Patchwork-Id: 1116 X-Patchwork-Delegate: jgarzik@pobox.com Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by ozlabs.org (Postfix) with ESMTP id 84D17DE6A1 for ; Wed, 24 Sep 2008 01:44:09 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751700AbYIWPoB (ORCPT ); Tue, 23 Sep 2008 11:44:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751459AbYIWPoA (ORCPT ); Tue, 23 Sep 2008 11:44:00 -0400 Received: from mtagate4.de.ibm.com ([195.212.29.153]:36737 "EHLO mtagate4.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751438AbYIWPn7 (ORCPT ); Tue, 23 Sep 2008 11:43:59 -0400 Received: from d12nrmr1607.megacenter.de.ibm.com (d12nrmr1607.megacenter.de.ibm.com [9.149.167.49]) by mtagate4.de.ibm.com (8.13.8/8.13.8) with ESMTP id m8NFhjQw288728; Tue, 23 Sep 2008 15:43:45 GMT Received: from d12av01.megacenter.de.ibm.com (d12av01.megacenter.de.ibm.com [9.149.165.212]) by d12nrmr1607.megacenter.de.ibm.com (8.13.8/8.13.8/NCO v9.1) with ESMTP id m8NFhj0A3678316; Tue, 23 Sep 2008 17:43:45 +0200 Received: from d12av01.megacenter.de.ibm.com (loopback [127.0.0.1]) by d12av01.megacenter.de.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m8NFhfoW016737; Tue, 23 Sep 2008 17:43:42 +0200 Received: from dyn-9-152-217-53.boeblingen.de.ibm.com (dyn-9-152-217-53.boeblingen.de.ibm.com [9.152.217.53]) by d12av01.megacenter.de.ibm.com (8.12.11.20060308/8.12.11) with ESMTP id m8NFhf4R016228; Tue, 23 Sep 2008 17:43:41 +0200 From: Jan-Bernd Themann To: Sebastien Dugue Subject: Re: [PATCH HACK] powerpc: quick hack to get a functional eHEA with hardirq preemption, eHCA is close Date: Tue, 23 Sep 2008 17:43:23 +0200 User-Agent: KMail/1.8.2 Cc: Christoph Raisch , Benjamin Herrenschmidt , gilles.carry@ext.bull.net, Jan-Bernd Themann , jean-pierre.dion@bull.net, linux-kernel , Linux-rt , linux-ppc , netdev@vger.kernel.org, Thomas Q Klein , tinytim@us.ibm.com, Hoang-Nam Nguyen References: <20080915100406.342e027a@bull.net> <20080918143146.77db81d5@bull.net> In-Reply-To: <20080918143146.77db81d5@bull.net> MIME-Version: 1.0 Content-Disposition: inline Message-Id: <200809231743.23828.ossthema@de.ibm.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hi, I think these are the "functional" changes that need to be included in the ibmebus driver. We'll add a RT flag in the final version to enable these changes only for RT-Linux for now. Ben, can you / your team look into the implementation of the set_irq_type functionality needed for XICS? Regards, Jan-Bernd & Christoph --- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff -Nurp b/arch/powerpc/kernel/ibmebus.c a/arch/powerpc/kernel/ibmebus.c --- b/arch/powerpc/kernel/ibmebus.c 2008-09-22 00:29:55.000000000 +0200 +++ a/arch/powerpc/kernel/ibmebus.c 2008-09-23 12:04:53.000000000 +0200 @@ -216,12 +216,16 @@ int ibmebus_request_irq(u32 ist, irq_han unsigned long irq_flags, const char *devname, void *dev_id) { + int ret; unsigned int irq = irq_create_mapping(NULL, ist); if (irq == NO_IRQ) return -EINVAL; - return request_irq(irq, handler, irq_flags, devname, dev_id); + ret = request_irq(irq, handler, irq_flags, devname, dev_id); + set_irq_type(irq, IRQ_TYPE_EDGE_RISING); + + return ret; } EXPORT_SYMBOL(ibmebus_request_irq);