| From: |
| Sergey Senozhatsky <senozhatsky-AT-chromium.org> |
| To: |
| Tomasz Figa <tfiga-AT-chromium.org>, Hans Verkuil <hverkuil-cisco-AT-xs4all.nl> |
| Subject: |
| [PATCH 0/8] videobuf2: support new noncontiguous DMA API |
| Date: |
| Tue, 02 Mar 2021 09:46:16 +0900 |
| Message-ID: |
| <20210302004624.31294-1-senozhatsky@chromium.org> |
| Cc: |
| Christoph Hellwig <hch-AT-lst.de>, Mauro Carvalho Chehab <mchehab-AT-kernel.org>, linux-media-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, Sergey Senozhatsky <senozhatsky-AT-chromium.org> |
| Archive-link: |
| Article |
Hello,
RFC
The series adds support for new noncontiguous DMA API [0] and
adds V4L2_FLAG_MEMORY_NON_COHERENT UAPI. This is similar to previous
V4L2_FLAG_MEMORY_NON_CONSISTENT (which was renamed), but the patch set
goes a bit further this time and also does some videobuf2 API
refactroings along the way.
A corresponding v4l2-compliance patch will be posted shortly.
[0] https://lore.kernel.org/lkml/20210301085236.947011-2-hch@...
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_FLAG_MEMORY_NON_COHERENT flag
videobuf2: add queue memory coherency parameter
videobuf2: handle V4L2_FLAG_MEMORY_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 | 135 +++++++++-----
.../common/videobuf2/videobuf2-dma-contig.c | 175 ++++++++++++++----
.../media/common/videobuf2/videobuf2-dma-sg.c | 39 ++--
.../media/common/videobuf2/videobuf2-v4l2.c | 47 ++---
.../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 | 5 +-
include/media/videobuf2-core.h | 57 +++---
include/uapi/linux/videodev2.h | 13 +-
13 files changed, 396 insertions(+), 179 deletions(-)
--
2.30.1.766.gb4fecdf3b7-goog
