From patchwork Wed Dec 19 08:52:31 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Kardashevskiy X-Patchwork-Id: 1015950 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 43KTyv0XKbz9s8r for ; Wed, 19 Dec 2018 20:25:59 +1100 (AEDT) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=ozlabs.ru Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 43KTyt5rc0zDqGh for ; Wed, 19 Dec 2018 20:25:58 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ozlabs.ru X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=ozlabs.ru (client-ip=107.173.13.209; helo=ozlabs.ru; envelope-from=aik@ozlabs.ru; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ozlabs.ru Received: from ozlabs.ru (ozlabs.ru [107.173.13.209]) by lists.ozlabs.org (Postfix) with ESMTP id 43KTFW3JW0zDqbk for ; Wed, 19 Dec 2018 19:53:35 +1100 (AEDT) Received: from fstn1-p1.ozlabs.ibm.com (localhost [IPv6:::1]) by ozlabs.ru (Postfix) with ESMTP id 6BE55AE805A3; Wed, 19 Dec 2018 03:53:32 -0500 (EST) From: Alexey Kardashevskiy To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH kernel v6 19/20] vfio_pci: Allow regions to add own capabilities Date: Wed, 19 Dec 2018 19:52:31 +1100 Message-Id: <20181219085232.103441-20-aik@ozlabs.ru> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181219085232.103441-1-aik@ozlabs.ru> References: <20181219085232.103441-1-aik@ozlabs.ru> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jose Ricardo Ziviani , Alexey Kardashevskiy , Alistair Popple , Daniel Henrique Barboza , Alex Williamson , kvm-ppc@vger.kernel.org, Sam Bobroff , Piotr Jaroszynski , =?utf-8?q?Leonardo_Augus?= =?utf-8?q?to_Guimar=C3=A3es_Garcia?= , Reza Arbab , David Gibson Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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; + } } }