From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751616AbaKXU0f (ORCPT ); Mon, 24 Nov 2014 15:26:35 -0500 Received: from terminus.zytor.com ([198.137.202.10]:50178 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751433AbaKXU03 (ORCPT ); Mon, 24 Nov 2014 15:26:29 -0500 Date: Sun, 23 Nov 2014 10:08:48 -0800 From: tip-bot for Jiang Liu Message-ID: Cc: jiang.liu@linux.intel.com, tglx@linutronix.de, bhelgaas@google.com, matthias.bgg@gmail.com, marc.zyngier@arm.com, wangyijing@huawei.com, hpa@zytor.com, tony.luck@intel.com, bp@alien8.de, linux-kernel@vger.kernel.org, mingo@kernel.org, yingjoe.chen@mediatek.com, agordeev@redhat.com, grant.likely@linaro.org Reply-To: grant.likely@linaro.org, linux-kernel@vger.kernel.org, mingo@kernel.org, bp@alien8.de, tony.luck@intel.com, yingjoe.chen@mediatek.com, agordeev@redhat.com, matthias.bgg@gmail.com, wangyijing@huawei.com, hpa@zytor.com, marc.zyngier@arm.com, jiang.liu@linux.intel.com, tglx@linutronix.de, bhelgaas@google.com In-Reply-To: <1416061447-9472-6-git-send-email-jiang.liu@linux.intel.com> References: <1416061447-9472-6-git-send-email-jiang.liu@linux.intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:irq/irqdomain] PCI/MSI: Introduce helpers to hide struct msi_desc implementation details Git-Commit-ID: d31eb342409b24e3d2e1989c775f3361e93acc08 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: d31eb342409b24e3d2e1989c775f3361e93acc08 Gitweb: http://git.kernel.org/tip/d31eb342409b24e3d2e1989c775f3361e93acc08 Author: Jiang Liu AuthorDate: Sat, 15 Nov 2014 22:24:03 +0800 Committer: Thomas Gleixner CommitDate: Sun, 23 Nov 2014 13:01:45 +0100 PCI/MSI: Introduce helpers to hide struct msi_desc implementation details Introduce helpers to hide struct msi_desc implementation details, so we could easily support non-PCI-compliant MSI devices later by moving msi_list into struct device. Signed-off-by: Jiang Liu Cc: Tony Luck Cc: linux-arm-kernel@lists.infradead.org Cc: Bjorn Helgaas Cc: Grant Likely Cc: Marc Zyngier Cc: Yijing Wang Cc: Yingjoe Chen Cc: Borislav Petkov Cc: Matthias Brugger Cc: Alexander Gordeev Link: http://lkml.kernel.org/r/1416061447-9472-6-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- include/linux/msi.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/include/linux/msi.h b/include/linux/msi.h index 1dcad0c..e0d0851 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -43,6 +43,25 @@ struct msi_desc { struct msi_msg msg; }; +/* Helpers to hide struct msi_desc implementation details */ +#define msi_desc_to_dev(desc) (&(desc)->dev.dev) +#define dev_to_msi_list(dev) (&to_pci_dev((dev))->msi_list) +#define first_msi_entry(dev) \ + list_first_entry(dev_to_msi_list((dev)), struct msi_desc, list) +#define for_each_msi_entry(desc, dev) \ + list_for_each_entry((desc), dev_to_msi_list((dev)), list) + +#ifdef CONFIG_PCI_MSI +#define first_pci_msi_entry(pdev) first_msi_entry(&(pdev)->dev) +#define for_each_pci_msi_entry(desc, pdev) \ + for_each_msi_entry((desc), &(pdev)->dev) + +static inline struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc) +{ + return desc->dev; +} +#endif /* CONFIG_PCI_MSI */ + void __pci_read_msi_msg(struct msi_desc *entry, struct msi_msg *msg); void __pci_write_msi_msg(struct msi_desc *entry, struct msi_msg *msg); void pci_write_msi_msg(unsigned int irq, struct msi_msg *msg);