From patchwork Sun Nov 9 15:10:28 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiang Liu X-Patchwork-Id: 5261041 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 4A0689F472 for ; Sun, 9 Nov 2014 15:11:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 803AB20172 for ; Sun, 9 Nov 2014 15:11:22 +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 A6F6B20158 for ; Sun, 9 Nov 2014 15:11:21 +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 1XnU6h-0004fe-3N; Sun, 09 Nov 2014 15:08:47 +0000 Received: from mga02.intel.com ([134.134.136.20]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XnU6T-0004Or-RH for linux-arm-kernel@lists.infradead.org; Sun, 09 Nov 2014 15:08:34 +0000 Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP; 09 Nov 2014 07:08:33 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.07,346,1413270000"; d="scan'208";a="604933010" Received: from gerry-dev.bj.intel.com ([10.238.158.52]) by orsmga001.jf.intel.com with ESMTP; 09 Nov 2014 07:08:28 -0800 From: Jiang Liu To: Bjorn Helgaas , Benjamin Herrenschmidt , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , "Rafael J. Wysocki" , Randy Dunlap , Yinghai Lu , Borislav Petkov , Grant Likely , Marc Zyngier , Yingjoe Chen , Matthias Brugger , Jiang Liu Subject: [RFC Part4 v1 06/17] genirq: Introduce callback irq_chip.irq_write_msi_msg Date: Sun, 9 Nov 2014 23:10:28 +0800 Message-Id: <1415545839-28263-7-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1415545839-28263-1-git-send-email-jiang.liu@linux.intel.com> References: <1415545839-28263-1-git-send-email-jiang.liu@linux.intel.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141109_070833_911425_710168D3 X-CRM114-Status: GOOD ( 12.18 ) X-Spam-Score: -5.3 (-----) Cc: Tony Luck , Konrad Rzeszutek Wilk , Greg Kroah-Hartman , Joerg Roedel , x86@kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org, Andrew Morton , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 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=-1.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_LOW, RP_MATCHES_RCVD, UNPARSEABLE_RELAY, URIBL_RHS_DOB 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 Introduce callback irq_chip.irq_write_msi_msg, so we could share common code among MSI alike interrupt controllers, such as HPET and DMAR. Signed-off-by: Jiang Liu --- include/linux/irq.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/irq.h b/include/linux/irq.h index 041edd6dc409..99aea9925b21 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -326,6 +326,7 @@ static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d) * @irq_release_resources: optional to release resources acquired with * irq_request_resources * @irq_compose_msi_msg: optional to compose message content for MSI + * @irq_write_msi_msg: optional to write message content for MSI * @flags: chip specific flags */ struct irq_chip { @@ -363,6 +364,7 @@ struct irq_chip { void (*irq_release_resources)(struct irq_data *data); void (*irq_compose_msi_msg)(struct irq_data *data, struct msi_msg *msg); + void (*irq_write_msi_msg)(struct irq_data *data, struct msi_msg *msg); unsigned long flags; }; @@ -457,6 +459,12 @@ extern void irq_chip_ack_parent(struct irq_data *data); extern int irq_chip_retrigger_hierarchy(struct irq_data *data); #endif +static inline void irq_chip_write_msi_msg(struct irq_data *data, + struct msi_msg *msg) +{ + data->chip->irq_write_msi_msg(data, msg); +} + /* Handling of unhandled and spurious interrupts: */ extern void note_interrupt(unsigned int irq, struct irq_desc *desc, irqreturn_t action_ret);