From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 90ECBC04AAF for ; Tue, 21 May 2019 07:54:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 59D1121743 for ; Tue, 21 May 2019 07:54:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558425292; bh=SITPpVCwi11SHOs3XUanWu/wOsT6fGEWvQJoKRZQEKk=; h=From:To:Cc:Subject:Date:List-ID:From; b=RXAYb4JgXCUXwqiPMbFYlzNdkygN00RHXTMXkfMoDKsOvXdXTA0Zjq6c/qwVw7DHS zzZDotnTPu994m7rAqA4Uh8MBQCVl4h1ymQTIMQA9y/vZiCLf6NMD3gD5ltQwg8Z+0 0uwJ4mEtcwgkB3sVNjiRgyE4rvrT9JFYKt0SVqtA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726992AbfEUHyv (ORCPT ); Tue, 21 May 2019 03:54:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:56674 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725809AbfEUHyv (ORCPT ); Tue, 21 May 2019 03:54:51 -0400 Received: from localhost.localdomain (unknown [115.193.166.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 513242173C; Tue, 21 May 2019 07:54:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558425290; bh=SITPpVCwi11SHOs3XUanWu/wOsT6fGEWvQJoKRZQEKk=; h=From:To:Cc:Subject:Date:From; b=u6K8ne0r7WvAQtC1DvFhLAl43XEbLlYnNmeooy0jvEtBScAamXSACMRg+q9XcF6sA BRRrEPGNBt4z4riYe6VYx6LoS2ZtVHr8IrZAX7DrhVok/L0cIaXX3uYQ0JIMZr86Nq Wle4cvpK50QxgLuZI0i5zNXTbd8JDTxxT7lHHtJM= From: guoren@kernel.org To: marc.zyngier@arm.com, mark.rutland@arm.com, tglx@linutronix.de Cc: linux-kernel@vger.kernel.org, jason@lakedaemon.net, guoren@kernel.org, ren_guo@c-sky.com, linux-csky@vger.kernel.org Subject: [PATCH] irqchip/irq-csky-mpintc: Support auto irq deliver to all cpus Date: Tue, 21 May 2019 15:54:05 +0800 Message-Id: <1558425245-20995-1-git-send-email-guoren@kernel.org> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Guo Ren The csky,mpintc could deliver a external irq to one cpu or all cpus, but it couldn't deliver a external irq to a group of cpus with cpu_mask. So we only use auto deliver mode when affinity mask_val is equal to cpu_present_mask. There is no limitation for only two cpus in SMP system. Signed-off-by: Guo Ren Cc: Marc Zyngier --- drivers/irqchip/irq-csky-mpintc.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/irqchip/irq-csky-mpintc.c b/drivers/irqchip/irq-csky-mpintc.c index 5bc0868..a3dbc6b 100644 --- a/drivers/irqchip/irq-csky-mpintc.c +++ b/drivers/irqchip/irq-csky-mpintc.c @@ -159,8 +159,19 @@ static int csky_irq_set_affinity(struct irq_data *d, if (cpu >= nr_cpu_ids) return -EINVAL; - /* Enable interrupt destination */ - cpu |= BIT(31); + /* + * The csky,mpintc could support auto irq deliver, but it only + * could deliver external irq to one cpu or all cpus. So it + * doesn't support deliver external irq to a group of cpus + * with cpu_mask. + * SO we only use auto deliver mode when affinity mask_val is + * equal to cpu_present_mask. + * + */ + if (cpumask_equal(mask_val, cpu_present_mask)) + cpu = 0; + else + cpu |= BIT(31); writel_relaxed(cpu, INTCG_base + INTCG_CIDSTR + offset); -- 2.7.4