From patchwork Thu Jul 6 19:12:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13304083 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 30B26EB64DC for ; Thu, 6 Jul 2023 19:14:19 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qHUPD-00063s-QZ; Thu, 06 Jul 2023 15:12:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qHUPC-000636-49 for qemu-devel@nongnu.org; Thu, 06 Jul 2023 15:12:42 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qHUPA-0003fM-KB for qemu-devel@nongnu.org; Thu, 06 Jul 2023 15:12:41 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1688670759; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=n4LtMziDSwqhV9XrrxLcKL5CUlV/p+z5tjPX/N35b1U=; b=V9kWFDabbSps8YTU3R+9yHT4LepUj/X+3XTLfRnbyE+UhAu3tBkiqOkIQc1lMfRvjj5aCO R7zcyDmo+shUmPUmJub5HlAuJfR/KU+DLb3/nMl47z0ninBtPql7YHeF4V/aGDjzhwbsQp m964WKjBuagzA+1JJq26LULGPByBVrQ= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-117-ufwXmBxZPhK9UqhmEOBj8w-1; Thu, 06 Jul 2023 15:12:34 -0400 X-MC-Unique: ufwXmBxZPhK9UqhmEOBj8w-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id BEEA5101A528; Thu, 6 Jul 2023 19:12:33 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.194.147]) by smtp.corp.redhat.com (Postfix) with ESMTP id A65A64087C6A; Thu, 6 Jul 2023 19:12:31 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Laurent Vivier , "Michael S. Tsirkin" , Cindy Lu , si-wei.liu@oracle.com, Stefano Garzarella , Shannon Nelson , Gautam Dawar , Jason Wang , Harpreet Singh Anand , Parav Pandit , Dragos Tatulea , Zhu Lingshan , Lei Yang Subject: [RFC PATCH 1/6] vdpa: export vhost_vdpa_set_vring_ready Date: Thu, 6 Jul 2023 21:12:22 +0200 Message-Id: <20230706191227.835526-2-eperezma@redhat.com> In-Reply-To: <20230706191227.835526-1-eperezma@redhat.com> References: <20230706191227.835526-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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-bounces+qemu-devel=archiver.kernel.org@nongnu.org The vhost-vdpa net backend needs to enable vrings in a different order than default, so export it. No functional change intended except for tracing, that now includes the (virtio) index being enabled and the return value of the ioctl. Still ignoring return value of this function if called from vhost_vdpa_dev_start, as reorganize calling code around it is out of the scope of this series. Signed-off-by: Eugenio Pérez --- include/hw/virtio/vhost-vdpa.h | 1 + hw/virtio/vhost-vdpa.c | 28 ++++++++++++++++++++-------- hw/virtio/trace-events | 2 +- 3 files changed, 22 insertions(+), 9 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index e64bfc7f98..5407d54fd7 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -57,6 +57,7 @@ typedef struct vhost_vdpa { } VhostVDPA; int vhost_vdpa_get_iova_range(int fd, struct vhost_vdpa_iova_range *iova_range); +int vhost_vdpa_set_vring_ready(struct vhost_vdpa *v, unsigned idx); int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, hwaddr size, void *vaddr, bool readonly); diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 3c575a9a6e..5978d970ee 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -528,6 +528,19 @@ int vhost_vdpa_get_iova_range(int fd, struct vhost_vdpa_iova_range *iova_range) return ret < 0 ? -errno : 0; } +int vhost_vdpa_set_vring_ready(struct vhost_vdpa *v, unsigned idx) +{ + struct vhost_dev *dev = v->dev; + struct vhost_vring_state state = { + .index = idx, + .num = 1, + }; + int r = vhost_vdpa_call(dev, VHOST_VDPA_SET_VRING_ENABLE, &state); + + trace_vhost_vdpa_set_vring_ready(dev, idx, r); + return r; +} + /* * The use of this function is for requests that only need to be * applied once. Typically such request occurs at the beginning @@ -872,16 +885,15 @@ static int vhost_vdpa_get_vq_index(struct vhost_dev *dev, int idx) return idx; } -static int vhost_vdpa_set_vring_ready(struct vhost_dev *dev) +static int vhost_vdpa_set_vrings_ready(struct vhost_dev *dev) { + struct vhost_vdpa *v = dev->opaque; int i; - trace_vhost_vdpa_set_vring_ready(dev); + + assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_VDPA); + for (i = 0; i < dev->nvqs; ++i) { - struct vhost_vring_state state = { - .index = dev->vq_index + i, - .num = 1, - }; - vhost_vdpa_call(dev, VHOST_VDPA_SET_VRING_ENABLE, &state); + vhost_vdpa_set_vring_ready(v, dev->vq_index + i); } return 0; } @@ -1294,7 +1306,7 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev, bool started) if (unlikely(!ok)) { return -1; } - vhost_vdpa_set_vring_ready(dev); + vhost_vdpa_set_vrings_ready(dev); } else { vhost_vdpa_suspend(dev); vhost_vdpa_svqs_stop(dev); diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index 8f8d05cf9b..4f6a6ba428 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -46,7 +46,7 @@ vhost_vdpa_set_features(void *dev, uint64_t features) "dev: %p features: 0x%"PRI vhost_vdpa_get_device_id(void *dev, uint32_t device_id) "dev: %p device_id %"PRIu32 vhost_vdpa_reset_device(void *dev, uint8_t status) "dev: %p status: 0x%"PRIx8 vhost_vdpa_get_vq_index(void *dev, int idx, int vq_idx) "dev: %p idx: %d vq idx: %d" -vhost_vdpa_set_vring_ready(void *dev) "dev: %p" +vhost_vdpa_set_vring_ready(void *dev, unsigned i, int r) "dev: %p, idx: %u, r: %d" vhost_vdpa_dump_config(void *dev, const char *line) "dev: %p %s" vhost_vdpa_set_config(void *dev, uint32_t offset, uint32_t size, uint32_t flags) "dev: %p offset: %"PRIu32" size: %"PRIu32" flags: 0x%"PRIx32 vhost_vdpa_get_config(void *dev, void *config, uint32_t config_len) "dev: %p config: %p config_len: %"PRIu32