From patchwork Thu Aug 29 07:59:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Coquelin X-Patchwork-Id: 58232 X-Patchwork-Delegate: maxime.coquelin@redhat.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 1569C1D406; Thu, 29 Aug 2019 10:01:07 +0200 (CEST) Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by dpdk.org (Postfix) with ESMTP id CD4041D406; Thu, 29 Aug 2019 10:01:04 +0200 (CEST) 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 2F89018C8929; Thu, 29 Aug 2019 08:01:04 +0000 (UTC) Received: from localhost.localdomain (ovpn-112-52.ams2.redhat.com [10.36.112.52]) by smtp.corp.redhat.com (Postfix) with ESMTP id 02FC65D6B2; Thu, 29 Aug 2019 08:01:01 +0000 (UTC) From: Maxime Coquelin To: tiwei.bie@intel.com, zhihong.wang@intel.com, amorenoz@redhat.com, xiao.w.wang@intel.com, dev@dpdk.org, jfreimann@redhat.com Cc: stable@dpdk.org, Maxime Coquelin Date: Thu, 29 Aug 2019 09:59:59 +0200 Message-Id: <20190829080000.20806-15-maxime.coquelin@redhat.com> In-Reply-To: <20190829080000.20806-1-maxime.coquelin@redhat.com> References: <20190829080000.20806-1-maxime.coquelin@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]); Thu, 29 Aug 2019 08:01:04 +0000 (UTC) Subject: [dpdk-dev] [PATCH 14/15] net/virtio: add vDPA op to get notification area X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This patch implements the vDPA .get_notify_area() callback. Signed-off-by: Maxime Coquelin --- drivers/net/virtio/virtio_vdpa.c | 33 ++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/drivers/net/virtio/virtio_vdpa.c b/drivers/net/virtio/virtio_vdpa.c index e0b2f99ba..e681f527a 100644 --- a/drivers/net/virtio/virtio_vdpa.c +++ b/drivers/net/virtio/virtio_vdpa.c @@ -707,6 +707,38 @@ virtio_vdpa_get_vfio_device_fd(int vid) return list->dev->vfio_dev_fd; } +static int +virtio_vdpa_get_notify_area(int vid, int qid, uint64_t *offset, uint64_t *size) +{ + int did; + struct internal_list *list; + struct virtio_vdpa_device *dev; + struct vfio_region_info reg = { .argsz = sizeof(reg) }; + int ret; + + did = rte_vhost_get_vdpa_device_id(vid); + list = find_internal_resource_by_did(did); + if (list == NULL) { + DRV_LOG(ERR, "Invalid device id: %d", did); + return -1; + } + + dev = list->dev; + + reg.index = dev->hw.notify_region; + ret = ioctl(dev->vfio_dev_fd, VFIO_DEVICE_GET_REGION_INFO, ®); + if (ret) { + DRV_LOG(ERR, "Get not get device region info: %s", + strerror(errno)); + return -1; + } + + *offset = dev->vqs[qid].notify_addr - dev->hw.notify_base + reg.offset; + *size = 0x1000; + + return 0; +} + static struct rte_vdpa_dev_ops virtio_vdpa_ops = { .get_queue_num = virtio_vdpa_get_queue_num, .get_features = virtio_vdpa_get_features, @@ -716,6 +748,7 @@ static struct rte_vdpa_dev_ops virtio_vdpa_ops = { .set_features = virtio_vdpa_set_features, .get_vfio_group_fd = virtio_vdpa_get_vfio_group_fd, .get_vfio_device_fd = virtio_vdpa_get_vfio_device_fd, + .get_notify_area = virtio_vdpa_get_notify_area, }; static inline int