[PATCH v6 00/11] Add cnxk_gpio

[Tomasz Duszynski]

This series introduces a new rawdevice PMD which allows
to manage userspace GPIOs and install custom GPIO interrupt
handlers which bypass kernel. This is especially useful for
applications that, besides providing standard dataplane functionality,
want to have fast and low latency access to GPIO pin state.

It'd be great to have that merged during 22.03 merge window.

v6:
- update MAINTAINERS

v5:
- added close callback to make sure PMD resources are freed properly
- updated selftest to return early on error
- doc fixes

v4:
- free kvargs after parsing arguments
- add support for allowing only subset of available GPIOs

v3:
- fix meson formatting
- fix cnxk_gpio_process_buf() return value

v2:
- do not trigger irq by writing to /dev/mem, use ioctl() instead

Tomasz Duszynski (11):
  raw/cnxk_gpio: add GPIO driver skeleton
  raw/cnxk_gpio: support reading default queue conf
  raw/cnxk_gpio: support reading queue count
  raw/cnxk_gpio: support queue setup
  raw/cnxk_gpio: support queue release
  raw/cnxk_gpio: support enqueuing buffers
  raw/cnxk_gpio: support dequeuing buffers
  raw/cnxk_gpio: support standard GPIO operations
  raw/cnxk_gpio: support custom irq handlers
  raw/cnxk_gpio: support selftest
  raw/cnxk_gpio: add option to allow using subset of GPIOs

 MAINTAINERS                                |   6 +
 doc/guides/platform/cnxk.rst               |   2 +
 doc/guides/rawdevs/cnxk_gpio.rst           | 200 ++++++
 doc/guides/rawdevs/index.rst               |   1 +
 doc/guides/rel_notes/release_22_03.rst     |  10 +
 drivers/raw/cnxk_gpio/cnxk_gpio.c          | 763 +++++++++++++++++++++
 drivers/raw/cnxk_gpio/cnxk_gpio.h          |  35 +
 drivers/raw/cnxk_gpio/cnxk_gpio_irq.c      | 216 ++++++
 drivers/raw/cnxk_gpio/cnxk_gpio_selftest.c | 393 +++++++++++
 drivers/raw/cnxk_gpio/meson.build          |  11 +
 drivers/raw/cnxk_gpio/rte_pmd_cnxk_gpio.h  | 437 ++++++++++++
 drivers/raw/cnxk_gpio/version.map          |   3 +
 drivers/raw/meson.build                    |   1 +
 13 files changed, 2078 insertions(+)
 create mode 100644 doc/guides/rawdevs/cnxk_gpio.rst
 create mode 100644 drivers/raw/cnxk_gpio/cnxk_gpio.c
 create mode 100644 drivers/raw/cnxk_gpio/cnxk_gpio.h
 create mode 100644 drivers/raw/cnxk_gpio/cnxk_gpio_irq.c
 create mode 100644 drivers/raw/cnxk_gpio/cnxk_gpio_selftest.c
 create mode 100644 drivers/raw/cnxk_gpio/meson.build
 create mode 100644 drivers/raw/cnxk_gpio/rte_pmd_cnxk_gpio.h
 create mode 100644 drivers/raw/cnxk_gpio/version.map

--
2.25.1