Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753165AbbGIIAz (ORCPT ); Thu, 9 Jul 2015 04:00:55 -0400 Received: from mga14.intel.com ([192.55.52.115]:6851 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753126AbbGIIAs (ORCPT ); Thu, 9 Jul 2015 04:00:48 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,438,1432623600"; d="scan'208";a="758915738" From: Jiang Liu To: Bjorn Helgaas , Thomas Gleixner , Ingo Molnar , Grant Likely , Marc Zyngier , Stuart Yoder , Yijing Wang , Borislav Petkov , Jiang Liu , Alexander Gordeev Cc: Tony Luck , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org 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> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2274 Lines: 70 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 */ -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/