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=-17.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 8C43EC4167B for ; Fri, 4 Dec 2020 04:06:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 513F0222B6 for ; Fri, 4 Dec 2020 04:06:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728105AbgLDEF7 (ORCPT ); Thu, 3 Dec 2020 23:05:59 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:26702 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727589AbgLDEF7 (ORCPT ); Thu, 3 Dec 2020 23:05:59 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1607054672; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jWQOtPyifN/PjEn3xTBf4iGLE1QrxjMiv/aT+1c7dfI=; b=P3Rhwm2OhgUKDoic5hDq4mCSLIcdfw2cLR1IcB2vJLnbDMNATMyjRuoeylubZG8xDkIPXE NeqTwjGRHrLhOAfVCLqf/QpcIhMy8YbcG9xc4y8ZcxgTGEiOVIl10hcOB//TAYYbNBdcgA m3qoF/oPqyDNnbrVFXtr/OVX0PMZL1g= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-589-NWFx0MyyP_eTAe03uZfnxQ-1; Thu, 03 Dec 2020 23:04:30 -0500 X-MC-Unique: NWFx0MyyP_eTAe03uZfnxQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DA271802B47; Fri, 4 Dec 2020 04:04:29 +0000 (UTC) Received: from jason-ThinkPad-X1-Carbon-6th.redhat.com (ovpn-12-116.pek2.redhat.com [10.72.12.116]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9901A1A838; Fri, 4 Dec 2020 04:04:27 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org Cc: shahafs@mellanox.com Subject: [PATCH V2 08/19] virtio-pci-modern: introduce vp_modern_generation() Date: Fri, 4 Dec 2020 12:03:42 +0800 Message-Id: <20201204040353.21679-9-jasowang@redhat.com> In-Reply-To: <20201204040353.21679-1-jasowang@redhat.com> References: <20201204040353.21679-1-jasowang@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch introduces vp_modern_generation() to get device generation. Signed-off-by: Jason Wang --- drivers/virtio/virtio_pci_modern.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c index cb14fc334a9c..a128e5814045 100644 --- a/drivers/virtio/virtio_pci_modern.c +++ b/drivers/virtio/virtio_pci_modern.c @@ -289,15 +289,26 @@ static void vp_set(struct virtio_device *vdev, unsigned offset, } } -static u32 vp_generation(struct virtio_device *vdev) +/* + * vp_modern_generation - get the device genreation + * @mdev: the modern virtio-pci device + * + * Returns the genreation read from device + */ +static u32 vp_modern_generation(struct virtio_pci_modern_device *mdev) { - struct virtio_pci_device *vp_dev = to_vp_device(vdev); - struct virtio_pci_modern_device *mdev = &vp_dev->mdev; struct virtio_pci_common_cfg __iomem *cfg = mdev->common; return vp_ioread8(&cfg->config_generation); } +static u32 vp_generation(struct virtio_device *vdev) +{ + struct virtio_pci_device *vp_dev = to_vp_device(vdev); + + return vp_modern_generation(&vp_dev->mdev); +} + /* * vp_modern_get_status - get the device status * @mdev: the modern virtio-pci device -- 2.25.1