From patchwork Thu Nov 20 09:05:16 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Feng" X-Patchwork-Id: 5346811 Return-Path: X-Original-To: patchwork-kvm@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 E881D9F387 for ; Thu, 20 Nov 2014 09:31:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3E21C20127 for ; Thu, 20 Nov 2014 09:31:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 67E4A201F5 for ; Thu, 20 Nov 2014 09:31:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756854AbaKTJbf (ORCPT ); Thu, 20 Nov 2014 04:31:35 -0500 Received: from mga11.intel.com ([192.55.52.93]:42295 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756803AbaKTJbb (ORCPT ); Thu, 20 Nov 2014 04:31:31 -0500 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP; 20 Nov 2014 01:31:30 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.07,422,1413270000"; d="scan'208";a="625421880" Received: from unknown (HELO wf-hsw-desktop.bj.intel.com) ([10.238.154.53]) by fmsmga001.fm.intel.com with ESMTP; 20 Nov 2014 01:14:32 -0800 From: Feng Wu To: alex.williamson@redhat.com, pbonzini@redhat.com Cc: kvm@vger.kernel.org, Feng Wu Subject: [RFC PATCH v1 2/2] vfio: Add VFIO API vfio_msi_get_irq Date: Thu, 20 Nov 2014 17:05:16 +0800 Message-Id: <1416474316-32159-3-git-send-email-feng.wu@intel.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1416474316-32159-1-git-send-email-feng.wu@intel.com> References: <1416474316-32159-1-git-send-email-feng.wu@intel.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 This API returns the host irq for the MSI/MSI-X interrrupts. Signed-off-by: Feng Wu --- drivers/vfio/pci/vfio_pci.c | 10 ++++++++++ include/linux/vfio.h | 2 ++ 2 files changed, 12 insertions(+), 0 deletions(-) diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c index 9558da3..4fb9828 100644 --- a/drivers/vfio/pci/vfio_pci.c +++ b/drivers/vfio/pci/vfio_pci.c @@ -1009,6 +1009,16 @@ put_devs: kfree(devs.devices); } +unsigned int vfio_msi_get_irq(struct vfio_device *device, int vector, bool msix) +{ + struct vfio_pci_device *vdev = + (struct vfio_pci_device *)vfio_device_data(device); + struct pci_dev *pdev = vdev->pdev; + + return msix ? vdev->msix[vector].vector : pdev->irq + vector; +} +EXPORT_SYMBOL_GPL(vfio_msi_get_irq); + static void __exit vfio_pci_cleanup(void) { pci_unregister_driver(&vfio_pci_driver); diff --git a/include/linux/vfio.h b/include/linux/vfio.h index d320411..007ca55 100644 --- a/include/linux/vfio.h +++ b/include/linux/vfio.h @@ -92,6 +92,8 @@ extern void vfio_unregister_iommu_driver( /* * External user API */ +extern unsigned int vfio_msi_get_irq(struct vfio_device *device, int vector, + bool msix); extern struct vfio_group *vfio_group_get_external_user(struct file *filep); extern void vfio_group_put_external_user(struct vfio_group *group); extern int vfio_external_user_iommu_id(struct vfio_group *group);