[v21,0/7] support dmadev

  This patch set contains seven patch for new add dmadev.

Chengwen Feng (7):
  dmadev: introduce DMA device library public APIs
  dmadev: introduce DMA device library internal header
  dmadev: introduce DMA device library PMD header
  dmadev: introduce DMA device library implementation
  doc: add DMA device library guide
  dma/skeleton: introduce skeleton dmadev driver
  app/test: add dmadev API test

---
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.
v19:
* squash maintainer patch to patch #1.
v18:
* RTE_DMA_STATUS_* add BUS_READ/WRITE_ERR, PAGE_FAULT.
* rte_dmadev dataplane API add judge dev_started when debug enable.
* rte_dmadev_start/vchan_setup add judge device configured.
* rte_dmadev_dump support format capability name.
* optimized the comments of rte_dmadev.
* fix skeldma_copy always return zero when enqueue successful.
* log encapsulation macro add newline characters.
* test_dmadev_api support rte_dmadev_dump() ut.

 MAINTAINERS                            |    7 +
 app/test/meson.build                   |    4 +
 app/test/test_dmadev.c                 |   43 +
 app/test/test_dmadev_api.c             |  543 ++++++++++++
 config/rte_config.h                    |    3 +
 doc/api/doxy-api-index.md              |    1 +
 doc/api/doxy-api.conf.in               |    1 +
 doc/guides/prog_guide/dmadev.rst       |  125 +++
 doc/guides/prog_guide/img/dmadev.svg   |  283 +++++++
 doc/guides/prog_guide/index.rst        |    1 +
 doc/guides/rel_notes/release_21_11.rst |    5 +
 drivers/dma/meson.build                |   11 +
 drivers/dma/skeleton/meson.build       |    7 +
 drivers/dma/skeleton/skeleton_dmadev.c |  594 ++++++++++++++
 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                |  607 ++++++++++++++
 lib/dmadev/rte_dmadev.h                | 1047 ++++++++++++++++++++++++
 lib/dmadev/rte_dmadev_core.h           |  187 +++++
 lib/dmadev/rte_dmadev_pmd.h            |   72 ++
 lib/dmadev/version.map                 |   35 +
 lib/meson.build                        |    1 +
 24 files changed, 3649 insertions(+)
 create mode 100644 app/test/test_dmadev.c
 create mode 100644 app/test/test_dmadev_api.c
 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