From patchwork Mon Oct 17 09:25:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 13008436 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 365A0C43219 for ; Mon, 17 Oct 2022 09:37:37 +0000 (UTC) Received: from localhost ([::1]:42778 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1okMYx-0000DA-62 for qemu-devel@archiver.kernel.org; Mon, 17 Oct 2022 05:37:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51036) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1okMO4-0005ZN-3I for qemu-devel@nongnu.org; Mon, 17 Oct 2022 05:26:20 -0400 Received: from out30-45.freemail.mail.aliyun.com ([115.124.30.45]:53556) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1okMNv-0002oo-Cz for qemu-devel@nongnu.org; Mon, 17 Oct 2022 05:26:13 -0400 X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R101e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=ay29a033018046060; MF=xuanzhuo@linux.alibaba.com; NM=1; PH=DS; RN=7; SR=0; TI=SMTPD_---0VSMILV6_1665998761; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0VSMILV6_1665998761) by smtp.aliyun-inc.com; Mon, 17 Oct 2022 17:26:01 +0800 From: Xuan Zhuo To: qemu-devel@nongnu.org Cc: Eduardo Habkost , Marcel Apfelbaum , =?utf-8?q?Philippe_Mathieu-D?= =?utf-8?q?aud=C3=A9?= , Yanan Wang , "Michael S. Tsirkin" , Jason Wang Subject: [PATCH v6 02/15] virtio: introduce virtio_queue_reset() Date: Mon, 17 Oct 2022 17:25:45 +0800 Message-Id: <20221017092558.111082-3-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.32.0.3.g01195cf9f In-Reply-To: <20221017092558.111082-1-xuanzhuo@linux.alibaba.com> References: <20221017092558.111082-1-xuanzhuo@linux.alibaba.com> MIME-Version: 1.0 X-Git-Hash: 3b20cde7ef Received-SPF: pass client-ip=115.124.30.45; envelope-from=xuanzhuo@linux.alibaba.com; helo=out30-45.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, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Introduce a new interface function virtio_queue_reset() to implement reset for vq. Add a new callback to VirtioDeviceClass for queue reset operation for each child device. Signed-off-by: Xuan Zhuo Acked-by: Jason Wang --- hw/virtio/virtio.c | 11 +++++++++++ include/hw/virtio/virtio.h | 2 ++ 2 files changed, 13 insertions(+) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 6f42fcadd7..cf5f9ca387 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -2484,6 +2484,17 @@ static void __virtio_queue_reset(VirtIODevice *vdev, uint32_t i) virtio_virtqueue_reset_region_cache(&vdev->vq[i]); } +void virtio_queue_reset(VirtIODevice *vdev, uint32_t queue_index) +{ + VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); + + if (k->queue_reset) { + k->queue_reset(vdev, queue_index); + } + + __virtio_queue_reset(vdev, queue_index); +} + void virtio_reset(void *opaque) { VirtIODevice *vdev = opaque; diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index f41b4a7e64..74d76c1dbc 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -148,6 +148,7 @@ struct VirtioDeviceClass { void (*set_config)(VirtIODevice *vdev, const uint8_t *config); void (*reset)(VirtIODevice *vdev); void (*set_status)(VirtIODevice *vdev, uint8_t val); + void (*queue_reset)(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. @@ -286,6 +287,7 @@ int virtio_queue_set_host_notifier_mr(VirtIODevice *vdev, int n, MemoryRegion *mr, bool assign); 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_update_irq(VirtIODevice *vdev); int virtio_set_features(VirtIODevice *vdev, uint64_t val);