From patchwork Tue Sep 24 13:53:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 11158881 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 424CF17D4 for ; Tue, 24 Sep 2019 13:55:21 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 28F192146E for ; Tue, 24 Sep 2019 13:55:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 28F192146E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id ECA826EA35; Tue, 24 Sep 2019 13:55:19 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by gabe.freedesktop.org (Postfix) with ESMTPS id E76DA89D8E; Tue, 24 Sep 2019 13:55:18 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 299BB18C8914; Tue, 24 Sep 2019 13:55:18 +0000 (UTC) Received: from jason-ThinkPad-X1-Carbon-6th.redhat.com (ovpn-12-44.pek2.redhat.com [10.72.12.44]) by smtp.corp.redhat.com (Postfix) with ESMTP id 098F15B6A5; Tue, 24 Sep 2019 13:54:56 +0000 (UTC) From: Jason Wang To: kvm@vger.kernel.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, kwankhede@nvidia.com, alex.williamson@redhat.com, mst@redhat.com, tiwei.bie@intel.com Subject: [PATCH V2 3/8] mdev: bus uevent support Date: Tue, 24 Sep 2019 21:53:27 +0800 Message-Id: <20190924135332.14160-4-jasowang@redhat.com> In-Reply-To: <20190924135332.14160-1-jasowang@redhat.com> References: <20190924135332.14160-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.6.2 (mx1.redhat.com [10.5.110.70]); Tue, 24 Sep 2019 13:55:18 +0000 (UTC) X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: christophe.de.dinechin@gmail.com, sebott@linux.ibm.com, airlied@linux.ie, Jason Wang , heiko.carstens@de.ibm.com, kevin.tian@intel.com, virtualization@lists.linux-foundation.org, rob.miller@broadcom.com, lulu@redhat.com, eperezma@redhat.com, pasic@linux.ibm.com, borntraeger@de.ibm.com, haotian.wang@sifive.com, zhi.a.wang@intel.com, farman@linux.ibm.com, idos@mellanox.com, gor@linux.ibm.com, cunming.liang@intel.com, rodrigo.vivi@intel.com, xiao.w.wang@intel.com, freude@linux.ibm.com, parav@mellanox.com, zhihong.wang@intel.com, akrowiak@linux.ibm.com, netdev@vger.kernel.org, cohuck@redhat.com, oberpar@linux.ibm.com, maxime.coquelin@redhat.com, lingshan.zhu@intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This patch adds bus uevent support for mdev bus in order to allow cooperation with userspace. Signed-off-by: Jason Wang --- drivers/vfio/mdev/mdev_driver.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/vfio/mdev/mdev_driver.c b/drivers/vfio/mdev/mdev_driver.c index b7c40ce86ee3..319d886ffaf7 100644 --- a/drivers/vfio/mdev/mdev_driver.c +++ b/drivers/vfio/mdev/mdev_driver.c @@ -82,9 +82,17 @@ static int mdev_match(struct device *dev, struct device_driver *drv) return 0; } +static int mdev_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct mdev_device *mdev = to_mdev_device(dev); + + return add_uevent_var(env, "MODALIAS=mdev:c%02X", mdev->class_id); +} + struct bus_type mdev_bus_type = { .name = "mdev", .match = mdev_match, + .uevent = mdev_uevent, .probe = mdev_probe, .remove = mdev_remove, };