From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 64747C43387 for ; Thu, 20 Dec 2018 08:25:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3F2262176F for ; Thu, 20 Dec 2018 08:25:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731138AbeLTIZJ (ORCPT ); Thu, 20 Dec 2018 03:25:09 -0500 Received: from ozlabs.ru ([107.173.13.209]:54979 "EHLO ozlabs.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731110AbeLTIZH (ORCPT ); Thu, 20 Dec 2018 03:25:07 -0500 Received: from fstn1-p1.ozlabs.ibm.com (localhost [IPv6:::1]) by ozlabs.ru (Postfix) with ESMTP id BE537AE80491; Thu, 20 Dec 2018 03:25:01 -0500 (EST) From: Alexey Kardashevskiy To: linuxppc-dev@lists.ozlabs.org Cc: Alexey Kardashevskiy , David Gibson , kvm-ppc@vger.kernel.org, kvm@vger.kernel.org, Alistair Popple , Reza Arbab , Sam Bobroff , Piotr Jaroszynski , =?UTF-8?q?Leonardo=20Augusto=20Guimar=C3=A3es=20Garcia?= , Jose Ricardo Ziviani , Daniel Henrique Barboza , Alex Williamson , Paul Mackerras , linux-kernel@vger.kernel.org, Christoph Hellwig Subject: [PATCH kernel v7 19/20] vfio_pci: Allow regions to add own capabilities Date: Thu, 20 Dec 2018 19:23:49 +1100 Message-Id: <20181220082350.58113-20-aik@ozlabs.ru> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181220082350.58113-1-aik@ozlabs.ru> References: <20181220082350.58113-1-aik@ozlabs.ru> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org VFIO regions already support region capabilities with a limited set of fields. However the subdriver might have to report to the userspace additional bits. This adds an add_capability() hook to vfio_pci_regops. Signed-off-by: Alexey Kardashevskiy Acked-by: Alex Williamson --- Changes: v3: * removed confusing rationale for the patch, the next patch makes use of it anyway --- drivers/vfio/pci/vfio_pci_private.h | 3 +++ drivers/vfio/pci/vfio_pci.c | 6 ++++++ 2 files changed, 9 insertions(+) diff --git a/drivers/vfio/pci/vfio_pci_private.h b/drivers/vfio/pci/vfio_pci_private.h index 86aab05..93c1738 100644 --- a/drivers/vfio/pci/vfio_pci_private.h +++ b/drivers/vfio/pci/vfio_pci_private.h @@ -62,6 +62,9 @@ struct vfio_pci_regops { int (*mmap)(struct vfio_pci_device *vdev, struct vfio_pci_region *region, struct vm_area_struct *vma); + int (*add_capability)(struct vfio_pci_device *vdev, + struct vfio_pci_region *region, + struct vfio_info_cap *caps); }; struct vfio_pci_region { diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c index 4a6f7c0..6cb70cf 100644 --- a/drivers/vfio/pci/vfio_pci.c +++ b/drivers/vfio/pci/vfio_pci.c @@ -763,6 +763,12 @@ static long vfio_pci_ioctl(void *device_data, if (ret) return ret; + if (vdev->region[i].ops->add_capability) { + ret = vdev->region[i].ops->add_capability(vdev, + &vdev->region[i], &caps); + if (ret) + return ret; + } } } -- 2.17.1