linux-kernel - [PATCHv3 0/8] videobuf2: support new noncontiguous DMA API

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Date:   Fri,  9 Jul 2021 18:20:19 +0900
From:   Sergey Senozhatsky <senozhatsky@...omium.org>
To:     Tomasz Figa <tfiga@...omium.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>
Cc:     Ricardo Ribalda <ribalda@...omium.org>,
        Christoph Hellwig <hch@....de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sergey Senozhatsky <senozhatsky@...omium.org>
Subject: [PATCHv3 0/8] videobuf2: support new noncontiguous DMA API

Hello,

        The series adds support for noncontiguous DMA API and
V4L2_MEMORY_FLAG_NON_COHERENT UAPI.

V2: https://lore.kernel.org/lkml/20210427131344.139443-1-senozhatsky@chromium.org/

v3:
-- addressed review feedback

Sergey Senozhatsky (8):
  videobuf2: rework vb2_mem_ops API
  videobuf2: inverse buffer cache_hints flags
  videobuf2: split buffer cache_hints initialisation
  videobuf2: move cache_hints handling to allocators
  videobuf2: add V4L2_MEMORY_FLAG_NON_COHERENT flag
  videobuf2: add queue memory coherency parameter
  videobuf2: handle V4L2_MEMORY_FLAG_NON_COHERENT flag
  videobuf2: handle non-contiguous DMA allocations

 .../userspace-api/media/v4l/buffer.rst        |  40 +++-
 .../media/v4l/vidioc-create-bufs.rst          |   7 +-
 .../media/v4l/vidioc-reqbufs.rst              |  16 +-
 .../media/common/videobuf2/videobuf2-core.c   | 127 ++++++++-----
 .../common/videobuf2/videobuf2-dma-contig.c   | 173 ++++++++++++++----
 .../media/common/videobuf2/videobuf2-dma-sg.c |  39 ++--
 .../media/common/videobuf2/videobuf2-v4l2.c   |  59 +++---
 .../common/videobuf2/videobuf2-vmalloc.c      |  30 +--
 drivers/media/dvb-core/dvb_vb2.c              |   2 +-
 drivers/media/v4l2-core/v4l2-compat-ioctl32.c |   9 +-
 drivers/media/v4l2-core/v4l2-ioctl.c          |   4 +-
 include/media/videobuf2-core.h                |  59 +++---
 include/uapi/linux/videodev2.h                |  11 +-
 13 files changed, 396 insertions(+), 180 deletions(-)

-- 
2.32.0.93.g670b81a890-goog