From patchwork Tue Feb 4 02:56:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergey Senozhatsky X-Patchwork-Id: 61422 X-Patchwork-Delegate: hverkuil@xs4all.nl Received: from vger.kernel.org ([209.132.180.67]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from ) id 1iyoNx-001Yx2-Bi; Tue, 04 Feb 2020 02:56:21 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727341AbgBDC5Y (ORCPT + 1 other); Mon, 3 Feb 2020 21:57:24 -0500 Received: from mail-pf1-f193.google.com ([209.85.210.193]:35388 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727323AbgBDC5W (ORCPT ); Mon, 3 Feb 2020 21:57:22 -0500 Received: by mail-pf1-f193.google.com with SMTP id y73so8683987pfg.2 for ; Mon, 03 Feb 2020 18:57:21 -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=raQvSM5V/uMvgqOsdMStTvPP8E1jqsk9wa9DPg9FZM8=; b=FHz9qg9vqBt1VTVoYCNd2qaYaNJG/29qmMaSm30O/XXyzEZe4S/DF7cLRmDUeCoytY UikEMN5nN/TsyisDq8bLb9d3/9TkBMebeVUnBNtqg3gnJ/FMhrsZvYtni0l134SO5H76 VYfoFzJW5VGyyJ+wGiX0LjKbVeKPI+Dgvb93A= 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=raQvSM5V/uMvgqOsdMStTvPP8E1jqsk9wa9DPg9FZM8=; b=n4Ix2hGYZWmTmQGlzDUyApYZ7IJOlLP+E3NnKavXJ6H0ZrDVpBLoRDmzHHUfc7ccEv Ubl+ye4u5MyPnZi+k1FJ9qLgDG7nDf0wHljlIMcvGrZfl4dPMy5OqKa50QPgdzKyKhVD drbDGnk/DOJr490JFO4znk6MxtbMJu/pvRxG3vJwSLQ9tWsG/FSTmsp/hXozg36dqCh/ t2ZUlBconshbk4y8XH9ngNnoUHtbLiZ7oMnuUXpqxKvURhG1c88et+zOzxXf9eB3oIw+ jmC/XXbozsUbZEXNiWegRnOghxIvugj5NNP0oFU1vA7pYF978RfhONQEIVGL0BzANYia vlFQ== X-Gm-Message-State: APjAAAW3RcvhXOo7VxGgwuNge+8CC3nyWsksAlM1q/HWRNbbOBsS9LvW bTY1/Ofsrafh0BzetrTy/BDYOw== X-Google-Smtp-Source: APXvYqyniqRgXTBNCmKcTESug8rjHaeK7Uxfak70Cz/Vrue0dxlUhVtDJIqEBQzy/JDyESeD9UdZ0w== X-Received: by 2002:a62:be0a:: with SMTP id l10mr29348868pff.110.1580785041112; Mon, 03 Feb 2020 18:57:21 -0800 (PST) Received: from tigerii.tok.corp.google.com ([2401:fa00:8f:203:5bbb:c872:f2b1:f53b]) by smtp.gmail.com with ESMTPSA id e1sm22491971pfl.98.2020.02.03.18.57.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Feb 2020 18:57:20 -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][PATCHv2 09/12] videobuf2: let user-space know if driver supports cache hints Date: Tue, 4 Feb 2020 11:56:38 +0900 Message-Id: <20200204025641.218376-10-senozhatsky@chromium.org> X-Mailer: git-send-email 2.25.0.341.g760bfbb309-goog In-Reply-To: <20200204025641.218376-1-senozhatsky@chromium.org> References: <20200204025641.218376-1-senozhatsky@chromium.org> MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@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. Change-Id: Ieac93f3726c61fd3b88e02c36980c1f3c7a82ecc Signed-off-by: Sergey Senozhatsky --- Documentation/media/uapi/v4l/vidioc-reqbufs.rst | 7 +++++++ drivers/media/common/videobuf2/videobuf2-v4l2.c | 2 ++ include/uapi/linux/videodev2.h | 1 + 3 files changed, 10 insertions(+) diff --git a/Documentation/media/uapi/v4l/vidioc-reqbufs.rst b/Documentation/media/uapi/v4l/vidioc-reqbufs.rst index 9741dac0d5b3..80603f57eb8a 100644 --- a/Documentation/media/uapi/v4l/vidioc-reqbufs.rst +++ b/Documentation/media/uapi/v4l/vidioc-reqbufs.rst @@ -165,6 +165,13 @@ 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 + - Set when the queue/buffer support memory consistency and cache + management hints. See :ref:`V4L2_FLAG_MEMORY_NON_CONSISTENT`, + :ref:`V4L2_BUF_FLAG_NO_CACHE_INVALIDATE` and + :ref:`V4L2_BUF_FLAG_NO_CACHE_CLEAN`. + Return Value ============ diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c index eb5d1306cb03..22ae0ff64684 100644 --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c @@ -698,6 +698,8 @@ 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 169a8cf345ed..12b1bd220347 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -951,6 +951,7 @@ 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