From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 BAE9FC2D0C0 for ; Tue, 17 Dec 2019 03:21:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8C96D218AC for ; Tue, 17 Dec 2019 03:21:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="BBtVGsMs" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727582AbfLQDVV (ORCPT ); Mon, 16 Dec 2019 22:21:21 -0500 Received: from mail-pf1-f195.google.com ([209.85.210.195]:34753 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727563AbfLQDVS (ORCPT ); Mon, 16 Dec 2019 22:21:18 -0500 Received: by mail-pf1-f195.google.com with SMTP id l127so4944399pfl.1 for ; Mon, 16 Dec 2019 19:21:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=9bAWCFHMKxSYudc9xD0mtxl2wph3ZizEkb+ltF/fPnw=; b=BBtVGsMs2whxo8gii2bpcI+p/QNQAnqcFhqYz4KHXqpr6gixuGZiqazsuOXfgEd31W 0NACv8eevYTpBfRxG02yAOShCwGqI1Fs7roWvTYQMUNAMPa7DdFMaiUBKE5W0hF59KCn BH5JRiI0Dn6x4z3XKFHNHyJK8pL5xFO50IW3k= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=9bAWCFHMKxSYudc9xD0mtxl2wph3ZizEkb+ltF/fPnw=; b=eYxVuiN5Y1jtEmbHDNWp3m0OhRfEcViwuZv7U+3sSUQM9B3fE9KXWpF1E9oqaEND6H FBAImxdFR7auPTMnJYITJ7yHrBbM/VqWcN71OdHNHvaYPCUeeq0AWE/lg4cwGtTETNY5 gNr07Nx1zdUoBx+lYTBOnnOGjIKKuYk/4V/qJ2Lk9uqD5z8zCjpM6Hj6zZx0w7AYN4Me urLsFNxYJGJVbYu2qUiQdetfbBWti68k+QKYtLbo0A5l2aRBbi3fisJZC/cEHAjYgjWV 89b5le+laxq8e6G6iHJgrl/h4Cd66xHLJVOo7iOVwZ4LEbdoM9SpUrTEoxXhSy6UHWQi 17Sw== X-Gm-Message-State: APjAAAVUJD7VkKwAn0VEPWLV+z4088K0uht/MscBSaCd41VfjLFEj2Nf X3rt+8pcs5q4dwnn40bv/n031Q== X-Google-Smtp-Source: APXvYqyZLTtmMRSnUha4K7/FcPhyMSiJtduh+2WvfTUf+qckUNomryze1L6EP3IgVb1v2AShg3jObQ== X-Received: by 2002:a65:58ce:: with SMTP id e14mr22577119pgu.153.1576552878016; Mon, 16 Dec 2019 19:21:18 -0800 (PST) Received: from tigerii.tok.corp.google.com ([2401:fa00:8f:203:250d:e71d:5a0a:9afe]) by smtp.gmail.com with ESMTPSA id j3sm24387455pfi.8.2019.12.16.19.21.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Dec 2019 19:21:17 -0800 (PST) From: Sergey Senozhatsky To: Hans Verkuil , Tomasz Figa , Mauro Carvalho Chehab , Kyungmin Park , Marek Szyprowski Cc: Sakari Ailus , Laurent Pinchart , Pawel Osciak , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Sergey Senozhatsky Subject: [RFC][PATCH 10/15] videobuf2: let user-space know when driver supports cache hints Date: Tue, 17 Dec 2019 12:20:29 +0900 Message-Id: <20191217032034.54897-11-senozhatsky@chromium.org> X-Mailer: git-send-email 2.24.1.735.g03f4e72817-goog In-Reply-To: <20191217032034.54897-1-senozhatsky@chromium.org> References: <20191217032034.54897-1-senozhatsky@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add V4L2_BUF_CAP_SUPPORTS_CACHE_HINTS to fill_buf_caps(), which is set when queue supports user-space cache management hints. Signed-off-by: Sergey Senozhatsky --- Documentation/media/uapi/v4l/vidioc-reqbufs.rst | 5 +++++ drivers/media/common/videobuf2/videobuf2-v4l2.c | 2 ++ include/uapi/linux/videodev2.h | 1 + 3 files changed, 8 insertions(+) diff --git a/Documentation/media/uapi/v4l/vidioc-reqbufs.rst b/Documentation/media/uapi/v4l/vidioc-reqbufs.rst index 9b69a61d9fd4..13eab807fdfb 100644 --- a/Documentation/media/uapi/v4l/vidioc-reqbufs.rst +++ b/Documentation/media/uapi/v4l/vidioc-reqbufs.rst @@ -166,6 +166,11 @@ aborting or finishing any DMA in progress, an implicit - Only valid for stateless decoders. If set, then userspace can set the ``V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF`` flag to hold off on returning the capture buffer until the OUTPUT timestamp changes. + * - ``V4L2_BUF_CAP_SUPPORTS_CACHE_HINTS`` + - 0x00000040 + - This buffer supports :ref:`V4L2_BUF_FLAG_NO_CACHE_INVALIDATE` and + :ref:`V4L2_BUF_FLAG_NO_CACHE_CLEAN` user-space cache hints. + Return Value ============ diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c index 48d123a1ac2a..1762849288ae 100644 --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c @@ -684,6 +684,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps) *caps |= V4L2_BUF_CAP_SUPPORTS_DMABUF; if (q->subsystem_flags & VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF) *caps |= V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF; + if (q->allow_cache_hints) + *caps |= V4L2_BUF_CAP_SUPPORTS_CACHE_HINTS; #ifdef CONFIG_MEDIA_CONTROLLER_REQUEST_API if (q->supports_requests) *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS; diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 82e2ded5a136..b5d6b8d4ae93 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -932,6 +932,7 @@ struct v4l2_requestbuffers { #define V4L2_BUF_CAP_SUPPORTS_REQUESTS (1 << 3) #define V4L2_BUF_CAP_SUPPORTS_ORPHANED_BUFS (1 << 4) #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5) +#define V4L2_BUF_CAP_SUPPORTS_CACHE_HINTS (1 << 6) /** * struct v4l2_plane - plane info for multi-planar buffers -- 2.24.1.735.g03f4e72817-goog