From patchwork Thu Jul 9 08:00:46 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiang Liu X-Patchwork-Id: 6753821 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 [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0BA579F319 for ; Thu, 9 Jul 2015 08:03:06 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 23662205D3 for ; Thu, 9 Jul 2015 08:03:05 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4E9772047B for ; Thu, 9 Jul 2015 08:03:04 +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 1ZD6lv-0002M5-GQ; Thu, 09 Jul 2015 08:01:31 +0000 Received: from mga03.intel.com ([134.134.136.65]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZD6lX-0001Vw-WD for linux-arm-kernel@lists.infradead.org; Thu, 09 Jul 2015 08:01:08 +0000 Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga103.jf.intel.com with ESMTP; 09 Jul 2015 01:00:47 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,438,1432623600"; d="scan'208";a="758915738" Received: from gerry-dev.bj.intel.com ([10.238.158.61]) by fmsmga002.fm.intel.com with ESMTP; 09 Jul 2015 01:00:44 -0700 From: Jiang Liu To: Bjorn Helgaas , Thomas Gleixner , Ingo Molnar , Grant Likely , Marc Zyngier , Stuart Yoder , Yijing Wang , Borislav Petkov , Jiang Liu , Alexander Gordeev Subject: [RFC Patch V1 11/12] genirq, PCI: Reorginize struct msi_desc to prepare for support of generic MSI Date: Thu, 9 Jul 2015 16:00:46 +0800 Message-Id: <1436428847-8886-12-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1436428847-8886-1-git-send-email-jiang.liu@linux.intel.com> References: <1436428847-8886-1-git-send-email-jiang.liu@linux.intel.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150709_010108_067545_55516286 X-CRM114-Status: GOOD ( 10.88 ) X-Spam-Score: -7.6 (-------) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-pci@vger.kernel.org, Tony Luck , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org 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=-4.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 Reorganize struct msi_desc so it could be reused by other MSI drivers. Signed-off-by: Jiang Liu --- include/linux/msi.h | 41 +++++++++++++++++++++-------------------- 1 file changed, 21 insertions(+), 20 deletions(-) diff --git a/include/linux/msi.h b/include/linux/msi.h index 5f77e231f515..f6845bc83774 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -19,29 +19,30 @@ void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg); void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg); struct msi_desc { - struct { - __u8 is_msix : 1; - __u8 multiple: 3; /* log2 num of messages allocated */ - __u8 multi_cap : 3; /* log2 num of messages supported */ - __u8 maskbit : 1; /* mask-pending bit supported ? */ - __u8 is_64 : 1; /* Address size: 0=32bit 1=64bit */ - __u16 entry_nr; /* specific enabled entry */ - unsigned default_irq; /* default pre-assigned irq */ - } msi_attrib; - - u32 masked; /* mask bits */ - unsigned int irq; - unsigned int nvec_used; /* number of messages */ - struct list_head list; + struct list_head list; + unsigned int irq; + unsigned int nvec_used; /* number of messages */ + struct device * dev; + struct msi_msg msg; /* Last set MSI message */ union { - void __iomem *mask_base; - u8 mask_pos; + struct { /* For PCI MSI/MSI-X */ + u32 masked; /* mask bits */ + struct { + __u8 is_msix : 1; + __u8 multiple: 3; /* log2 num of messages allocated */ + __u8 multi_cap : 3; /* log2 num of messages supported */ + __u8 maskbit : 1; /* mask-pending bit supported ? */ + __u8 is_64 : 1; /* Address size: 0=32bit 1=64bit */ + __u16 entry_nr; /* specific enabled entry */ + unsigned default_irq; /* default pre-assigned irq */ + } msi_attrib; + union { + u8 mask_pos; + void __iomem *mask_base; + }; + }; }; - struct device *dev; - - /* Last set MSI message */ - struct msi_msg msg; }; /* Helpers to hide struct msi_desc implementation details */