From patchwork Fri Apr 18 06:05:47 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Haojian Zhuang X-Patchwork-Id: 4013141 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 718C3BFF02 for ; Fri, 18 Apr 2014 06:14:11 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B1A6F20373 for ; Fri, 18 Apr 2014 06:14:10 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D89B120364 for ; Fri, 18 Apr 2014 06:14:09 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Wb21r-0004fk-5T; Fri, 18 Apr 2014 06:12:03 +0000 Received: from mail-pd0-f169.google.com ([209.85.192.169]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Wb21o-0004UH-7F for linux-arm-kernel@lists.infradead.org; Fri, 18 Apr 2014 06:12:00 +0000 Received: by mail-pd0-f169.google.com with SMTP id fp1so1148877pdb.28 for ; Thu, 17 Apr 2014 23:11:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=L1P8n7Vkne/t/QpgMZCTnFVnErQpIMnWUs5cD9YpI1E=; b=aj+PuS4foHyAKUjxqunqxI0l6JvJFipk9q5yFTPLahkGtDH0OlQbzZuDD9W29rH3YR xmqaL09I/e+wGV7FItTtB6Q9GoRBDbs3zdJ02wu5zUwvK37ZluJ6cSsyaMwDhLtwtNVY cIPrAd11dR8Icd4BeAjHE/UZYBtJ4zIzL1LEWlS3PJx5BPX6YZ2I4qsQDakpiDA1CeY1 YHtgJjU7cJXo6hFkZ1xzqjMiplJuW/OvOUXhVqdllTwkxIeeqJLibsGu2Hr9EzEo2CPu FD1AWlrMxRP+Z0WyfwKMHINTocrN6srik3ht/kgTVdFn1xy5qyvP7rFDC4OC1ztnueJf k3gQ== X-Gm-Message-State: ALoCoQkkUrqNFrHoHdcenRGHOSpbXY2hg5YGT+RuP9xy42LV8NiyDBuC2+Zkd3QdnF/dnoa0+m/5 X-Received: by 10.67.30.168 with SMTP id kf8mr20326228pad.84.1397801496863; Thu, 17 Apr 2014 23:11:36 -0700 (PDT) Received: from localhost.localdomain ([140.206.182.114]) by mx.google.com with ESMTPSA id tk5sm57498473pbc.63.2014.04.17.23.10.56 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 17 Apr 2014 23:11:35 -0700 (PDT) From: Haojian Zhuang To: tglx@linutronix.de, linux@arm.linux.org.uk, linux-arm-kernel@lists.infradead.org, arnd@arndb.de, olof@lixom.net, khilman@kernel.org, xuwei5@hisilicon.com, marc.zyngier@arm.com, christoffer.dall@linaro.org, Dave.Martin@arm.com, nicolas.pitre@linaro.org Subject: [PATCH v3 04/13] irq: gic: use mask field in GICC_IAR Date: Fri, 18 Apr 2014 14:05:47 +0800 Message-Id: <1397801156-25682-5-git-send-email-haojian.zhuang@linaro.org> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1397801156-25682-1-git-send-email-haojian.zhuang@linaro.org> References: <1397801156-25682-1-git-send-email-haojian.zhuang@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140417_231200_274777_C8310A0F X-CRM114-Status: GOOD ( 11.89 ) X-Spam-Score: 0.0 (/) Cc: Haojian Zhuang X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Bit[9:0] is interrupt ID field in GICC_IAR. Bit[12:10] is CPU ID field, and others are reserved. So we should use GICC_IAR_INTID to get interrupt ID. It's not a good way to use ~0x1c00 (CPU ID field) to get interrupt ID. Signed-off-by: Haojian Zhuang --- drivers/irqchip/irq-gic.c | 2 +- include/linux/irqchip/arm-gic.h | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 4300b66..8fd27bf 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -287,7 +287,7 @@ static void __exception_irq_entry gic_handle_irq(struct pt_regs *regs) do { irqstat = readl_relaxed(cpu_base + GIC_CPU_INTACK); - irqnr = irqstat & ~0x1c00; + irqnr = irqstat & GICC_IAR_INTID; if (likely(irqnr > 15 && irqnr < 1021)) { irqnr = irq_find_mapping(gic->domain, irqnr); diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h index 7ed92d0..55933aa 100644 --- a/include/linux/irqchip/arm-gic.h +++ b/include/linux/irqchip/arm-gic.h @@ -21,6 +21,8 @@ #define GIC_CPU_ACTIVEPRIO 0xd0 #define GIC_CPU_IDENT 0xfc +#define GICC_IAR_INTID 0x3ff + #define GIC_DIST_CTRL 0x000 #define GIC_DIST_CTR 0x004 #define GIC_DIST_IGROUP 0x080