[v23,0/6] support dmadev

  This patch set contains six patch for new add dmadev.

Chengwen Feng (6):
  dmadev: introduce DMA device library
  dmadev: add control plane function support
  dmadev: add data plane function support
  dmadev: add multi-process support
  dma/skeleton: introduce skeleton dmadev driver
  app/test: add dmadev API test

---
v23:
* split multi-process support from 1st patch.
* fix some static check warning.
* fix skeleton cpu thread zero_req_count flip bug.
* add test_dmadev_api.h.
* add the description of modifying the dmadev state when init OK.
v22:
* function prefix change from rte_dmadev_* to rte_dma_*.
* change to prefix comment in most scenarios.
* dmadev dev_id use int16_t type.
* fix typo.
* organize patchsets in incremental mode.
v21:
* add comment for reserved fields of struct rte_dmadev.
v20:
* delete unnecessary and duplicate include header files.
* the conf_sz parameter is added to the configure and vchan-setup
  callbacks of the PMD, this is mainly used to enhance ABI
  compatibility.
* the rte_dmadev structure field is rearranged to reserve more space
  for I/O functions.
* fix some ambiguous and unnecessary comments.
* fix the potential memory leak of ut.
* redefine skeldma_init_once to skeldma_count.
* suppress rte_dmadev error output when execute ut.

 MAINTAINERS                            |    7 +
 app/test/meson.build                   |    4 +
 app/test/test_dmadev.c                 |   41 +
 app/test/test_dmadev_api.c             |  574 +++++++++++++
 app/test/test_dmadev_api.h             |    5 +
 config/rte_config.h                    |    3 +
 doc/api/doxy-api-index.md              |    1 +
 doc/api/doxy-api.conf.in               |    1 +
 doc/guides/dmadevs/index.rst           |   12 +
 doc/guides/index.rst                   |    1 +
 doc/guides/prog_guide/dmadev.rst       |  127 +++
 doc/guides/prog_guide/img/dmadev.svg   |  283 +++++++
 doc/guides/prog_guide/index.rst        |    1 +
 doc/guides/rel_notes/release_21_11.rst |    7 +
 drivers/dma/meson.build                |    6 +
 drivers/dma/skeleton/meson.build       |    7 +
 drivers/dma/skeleton/skeleton_dmadev.c |  570 +++++++++++++
 drivers/dma/skeleton/skeleton_dmadev.h |   61 ++
 drivers/dma/skeleton/version.map       |    3 +
 drivers/meson.build                    |    1 +
 lib/dmadev/meson.build                 |    7 +
 lib/dmadev/rte_dmadev.c                |  728 ++++++++++++++++
 lib/dmadev/rte_dmadev.h                | 1074 ++++++++++++++++++++++++
 lib/dmadev/rte_dmadev_core.h           |  181 ++++
 lib/dmadev/rte_dmadev_pmd.h            |   60 ++
 lib/dmadev/version.map                 |   35 +
 lib/meson.build                        |    1 +
 27 files changed, 3801 insertions(+)
 create mode 100644 app/test/test_dmadev.c
 create mode 100644 app/test/test_dmadev_api.c
 create mode 100644 app/test/test_dmadev_api.h
 create mode 100644 doc/guides/dmadevs/index.rst
 create mode 100644 doc/guides/prog_guide/dmadev.rst
 create mode 100644 doc/guides/prog_guide/img/dmadev.svg
 create mode 100644 drivers/dma/meson.build
 create mode 100644 drivers/dma/skeleton/meson.build
 create mode 100644 drivers/dma/skeleton/skeleton_dmadev.c
 create mode 100644 drivers/dma/skeleton/skeleton_dmadev.h
 create mode 100644 drivers/dma/skeleton/version.map
 create mode 100644 lib/dmadev/meson.build
 create mode 100644 lib/dmadev/rte_dmadev.c
 create mode 100644 lib/dmadev/rte_dmadev.h
 create mode 100644 lib/dmadev/rte_dmadev_core.h
 create mode 100644 lib/dmadev/rte_dmadev_pmd.h
 create mode 100644 lib/dmadev/version.map