From patchwork Thu Jul 29 08:16:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Kasireddy, Vivek" X-Patchwork-Id: 12408087 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6078BC4338F for ; Thu, 29 Jul 2021 08:29:53 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 24E9C60FD7 for ; Thu, 29 Jul 2021 08:29:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 24E9C60FD7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 68A2E6ECA0; Thu, 29 Jul 2021 08:29:52 +0000 (UTC) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0A6D96ECA0 for ; Thu, 29 Jul 2021 08:29:51 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10059"; a="276612147" X-IronPort-AV: E=Sophos;i="5.84,278,1620716400"; d="scan'208";a="276612147" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jul 2021 01:29:50 -0700 X-IronPort-AV: E=Sophos;i="5.84,278,1620716400"; d="scan'208";a="507013876" Received: from vkasired-desk2.fm.intel.com ([10.105.128.127]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jul 2021 01:29:49 -0700 From: Vivek Kasireddy To: dri-devel@lists.freedesktop.org Subject: [RFC v1 0/4] drm: Add support for DRM_CAP_DEFERRED_OUT_FENCE capability Date: Thu, 29 Jul 2021 01:16:55 -0700 Message-Id: <20210729081659.2255499-1-vivek.kasireddy@intel.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Dongwon Kim , =?utf-8?q?Michel_D=C3=A4nzer?= , Vivek Kasireddy , Tina Zhang , Gerd Hoffmann Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" By separating the OUT_FENCE signalling from pageflip completion allows a Guest compositor to start a new repaint cycle with a new buffer instead of waiting for the old buffer to be free. This work is based on the idea/suggestion from Simon and Pekka. This capability can be a solution for this issue: https://gitlab.freedesktop.org/wayland/weston/-/issues/514 Corresponding Weston MR: https://gitlab.freedesktop.org/wayland/weston/-/merge_requests/668 Cc: Daniel Vetter Cc: Gerd Hoffmann Cc: Pekka Paalanen Cc: Simon Ser Cc: Michel Dänzer Cc: Tina Zhang Cc: Dongwon Kim Vivek Kasireddy (4): drm: Add a capability flag to support deferred out_fence signalling virtio-gpu uapi: Add VIRTIO_GPU_F_OUT_FENCE feature drm/virtio: Add VIRTIO_GPU_CMD_RESOURCE_OUT_FENCE cmd drm/virtio: Probe and implement VIRTIO_GPU_F_OUT_FENCE feature drivers/gpu/drm/drm_file.c | 11 +++--- drivers/gpu/drm/drm_ioctl.c | 3 ++ drivers/gpu/drm/virtio/virtgpu_debugfs.c | 1 + drivers/gpu/drm/virtio/virtgpu_drv.c | 1 + drivers/gpu/drm/virtio/virtgpu_drv.h | 6 ++++ drivers/gpu/drm/virtio/virtgpu_fence.c | 9 +++++ drivers/gpu/drm/virtio/virtgpu_kms.c | 10 ++++-- drivers/gpu/drm/virtio/virtgpu_plane.c | 44 +++++++++++++++++++++++- drivers/gpu/drm/virtio/virtgpu_vq.c | 17 +++++++++ include/drm/drm_mode_config.h | 9 +++++ include/uapi/drm/drm.h | 1 + include/uapi/linux/virtio_gpu.h | 12 +++++++ 12 files changed, 117 insertions(+), 7 deletions(-)