From patchwork Wed Jun 7 14:54:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Erico Nunes X-Patchwork-Id: 13270817 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 98074C77B7A for ; Wed, 7 Jun 2023 14:55:29 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1q6uZ4-0002qo-9W; Wed, 07 Jun 2023 10:55:10 -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 1q6uZ2-0002qH-3t for qemu-devel@nongnu.org; Wed, 07 Jun 2023 10:55:08 -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 1q6uZ0-0001H5-Ei for qemu-devel@nongnu.org; Wed, 07 Jun 2023 10:55:07 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1686149705; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=FgZpGMwwgAK0WS7AcVDShPy+3ZjYLclY8GY5vyC6CXg=; b=P+eQeC7Dzst+tlCXXdmjBKraasGjrPvxIZOP5v0xNLB1C8Fk2jC1f9brijmUEQLu6Y4Sdu 6BnNeOS8LmiXk6CBP/o1xnxF2OKK0pziVyWBh5GTtNR2IiZ9fQVL5S7ZneLBVFz8IBzCvW cqiq1Bpkm2zvOBo3Pcq5xMJS+OGyZ0o= 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-447-DkNA18xNOgmaGPQy14Nivg-1; Wed, 07 Jun 2023 10:55:04 -0400 X-MC-Unique: DkNA18xNOgmaGPQy14Nivg-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 2E3C9101A597 for ; Wed, 7 Jun 2023 14:55:04 +0000 (UTC) Received: from centennial.enunes.eu.com (unknown [10.45.227.17]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0F272403367; Wed, 7 Jun 2023 14:55:02 +0000 (UTC) From: Erico Nunes To: qemu-devel@nongnu.org Cc: marcandre.lureau@redhat.com, mst@redhat.com, kraxel@redhat.com, Erico Nunes Subject: [PATCH v3 2/4] docs: vhost-user-gpu: add protocol changes for EDID Date: Wed, 7 Jun 2023 16:54:53 +0200 Message-Id: <20230607145455.158267-3-ernunes@redhat.com> In-Reply-To: <20230607145455.158267-1-ernunes@redhat.com> References: <20230607145455.158267-1-ernunes@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 Received-SPF: pass client-ip=170.10.129.124; envelope-from=ernunes@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, 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 VHOST_USER_GPU_GET_EDID is defined as a message from the backend to the frontend to retrieve the EDID data for a given scanout. The VHOST_USER_GPU_PROTOCOL_F_EDID protocol feature is defined as a way to check whether this new message is supported or not. Signed-off-by: Erico Nunes --- docs/interop/vhost-user-gpu.rst | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) diff --git a/docs/interop/vhost-user-gpu.rst b/docs/interop/vhost-user-gpu.rst index 1640553729..b78806892d 100644 --- a/docs/interop/vhost-user-gpu.rst +++ b/docs/interop/vhost-user-gpu.rst @@ -124,6 +124,16 @@ VhostUserGpuDMABUFScanout :fourcc: ``i32``, the DMABUF fourcc +VhostUserGpuEdidRequest +^^^^^^^^^^^^^^^^^^^^^^^ + ++------------+ +| scanout-id | ++------------+ + +:scanout-id: ``u32``, the scanout to get edid from + + C structure ----------- @@ -141,6 +151,8 @@ In QEMU the vhost-user-gpu message is implemented with the following struct: VhostUserGpuScanout scanout; VhostUserGpuUpdate update; VhostUserGpuDMABUFScanout dmabuf_scanout; + VhostUserGpuEdidRequest edid_req; + struct virtio_gpu_resp_edid resp_edid; struct virtio_gpu_resp_display_info display_info; uint64_t u64; } payload; @@ -149,10 +161,11 @@ In QEMU the vhost-user-gpu message is implemented with the following struct: Protocol features ----------------- -None yet. +.. code:: c + + #define VHOST_USER_GPU_PROTOCOL_F_EDID 0 -As the protocol may need to evolve, new messages and communication -changes are negotiated thanks to preliminary +New messages and communication changes are negotiated thanks to the ``VHOST_USER_GPU_GET_PROTOCOL_FEATURES`` and ``VHOST_USER_GPU_SET_PROTOCOL_FEATURES`` requests. @@ -241,3 +254,12 @@ Message types Note: there is no data payload, since the scanout is shared thanks to DMABUF, that must have been set previously with ``VHOST_USER_GPU_DMABUF_SCANOUT``. + +``VHOST_USER_GPU_GET_EDID`` + :id: 11 + :request payload: ``struct VhostUserGpuEdidRequest`` + :reply payload: ``struct virtio_gpu_resp_edid`` (from virtio specification) + + Retrieve the EDID data for a given scanout. + This message requires the ``VHOST_USER_GPU_PROTOCOL_F_EDID`` protocol + feature to be supported.