From nobody Mon Feb 9 12:11:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linux.alibaba.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1662917070202143.81213445421747; Sun, 11 Sep 2022 10:24:30 -0700 (PDT) Received: from localhost ([::1]:41946 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oXQh2-0005kB-31 for importer@patchew.org; Sun, 11 Sep 2022 13:24:28 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45900) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oXQf9-00036z-V8 for qemu-devel@nongnu.org; Sun, 11 Sep 2022 13:22:32 -0400 Received: from out30-133.freemail.mail.aliyun.com ([115.124.30.133]:45512) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oXQf4-0003Jz-77 for qemu-devel@nongnu.org; Sun, 11 Sep 2022 13:22:29 -0400 Received: from localhost(mailfrom:kangjie.xu@linux.alibaba.com fp:SMTPD_---0VPKhSsa_1662916936) by smtp.aliyun-inc.com; Mon, 12 Sep 2022 01:22:16 +0800 X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R121e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=ay29a033018045176; MF=kangjie.xu@linux.alibaba.com; NM=1; PH=DS; RN=9; SR=0; TI=SMTPD_---0VPKhSsa_1662916936; From: Kangjie Xu To: qemu-devel@nongnu.org Cc: mst@redhat.com, jasowang@redhat.com, eduardo@habkost.net, marcel.apfelbaum@gmail.com, f4bug@amsat.org, wangyanan55@huawei.com, hengqi@linux.alibaba.com, xuanzhuo@linux.alibaba.com Subject: [PATCH v4 04/15] virtio: introduce virtio_queue_enable() Date: Mon, 12 Sep 2022 01:22:00 +0800 Message-Id: <216af3a38ad98d10e484d4d9ea275bc5ba3314ac.1662916759.git.kangjie.xu@linux.alibaba.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=115.124.30.133; envelope-from=kangjie.xu@linux.alibaba.com; helo=out30-133.freemail.mail.aliyun.com X-Spam_score_int: -98 X-Spam_score: -9.9 X-Spam_bar: --------- X-Spam_report: (-9.9 / 5.0 requ) BAYES_00=-1.9, ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, UNPARSEABLE_RELAY=0.001, USER_IN_DEF_SPF_WL=-7.5 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1662917071662100001 Content-Type: text/plain; charset="utf-8" Introduce the interface queue_enable() in VirtioDeviceClass and the fucntion virtio_queue_enable() in virtio, it can be called when VIRTIO_PCI_COMMON_Q_ENABLE is written and related virtqueue can be started. It only supports the devices of virtio 1 or later. The not-supported devices can only start the virtqueue when DRIVER_OK. Signed-off-by: Kangjie Xu Signed-off-by: Xuan Zhuo Acked-by: Jason Wang --- hw/virtio/virtio.c | 14 ++++++++++++++ include/hw/virtio/virtio.h | 2 ++ 2 files changed, 16 insertions(+) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 0e9d41366f..141f18c633 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -2050,6 +2050,20 @@ void virtio_queue_reset(VirtIODevice *vdev, uint32_t= queue_index) __virtio_queue_reset(vdev, queue_index); } =20 +void virtio_queue_enable(VirtIODevice *vdev, uint32_t queue_index) +{ + VirtioDeviceClass *k =3D VIRTIO_DEVICE_GET_CLASS(vdev); + + if (!virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) { + error_report("queue_enable is only suppported in devices of virtio= " + "1.0 or later."); + } + + if (k->queue_enable) { + k->queue_enable(vdev, queue_index); + } +} + void virtio_reset(void *opaque) { VirtIODevice *vdev =3D opaque; diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index 879394299b..085997d8f3 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -131,6 +131,7 @@ struct VirtioDeviceClass { void (*reset)(VirtIODevice *vdev); void (*set_status)(VirtIODevice *vdev, uint8_t val); void (*queue_reset)(VirtIODevice *vdev, uint32_t queue_index); + void (*queue_enable)(VirtIODevice *vdev, uint32_t queue_index); /* For transitional devices, this is a bitmap of features * that are only exposed on the legacy interface but not * the modern one. @@ -270,6 +271,7 @@ int virtio_queue_set_host_notifier_mr(VirtIODevice *vde= v, int n, int virtio_set_status(VirtIODevice *vdev, uint8_t val); void virtio_reset(void *opaque); void virtio_queue_reset(VirtIODevice *vdev, uint32_t queue_index); +void virtio_queue_enable(VirtIODevice *vdev, uint32_t queue_index); void virtio_update_irq(VirtIODevice *vdev); int virtio_set_features(VirtIODevice *vdev, uint64_t val); =20 --=20 2.32.0