mbox

[0/2] add platform bus

Message ID 20230125103809.1250080-1-tduszynski@marvell.com (mailing list archive)
Headers

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Tomasz Duszynski Jan. 25, 2023, 10:38 a.m. UTC 
  Platform bus is a bus under Linux which manages devices that do not have
any discovery-mechanism built in. Linux learns about platform devices
directly from device-tree during boot-up phase.

Afterwards if userspace wants to use some particular device driver being
usually a mixture of vdev/rawdev gets developed.

In order to simplify that introduce a DPDK platform bus which provides
auto-probe experience and separates a bus logic from the driver itself.

Now only devices which are backed-by vfio-platform kernel driver
are supported, though other options may be added if necessary.

Tomasz Duszynski (2):
  lib: add helper to read strings from sysfs files
  bus: add platform bus

 MAINTAINERS                                |   4 +
 app/test/test_eal_fs.c                     | 108 +++-
 doc/guides/rel_notes/release_23_03.rst     |   5 +
 drivers/bus/meson.build                    |   1 +
 drivers/bus/platform/bus_platform_driver.h | 174 ++++++
 drivers/bus/platform/meson.build           |  16 +
 drivers/bus/platform/platform.c            | 604 +++++++++++++++++++++
 drivers/bus/platform/platform_params.c     |  70 +++
 drivers/bus/platform/private.h             |  48 ++
 drivers/bus/platform/version.map           |  10 +
 lib/eal/common/eal_filesystem.h            |   6 +
 lib/eal/unix/eal_filesystem.c              |  24 +-
 lib/eal/version.map                        |   1 +
 13 files changed, 1053 insertions(+), 18 deletions(-)
 create mode 100644 drivers/bus/platform/bus_platform_driver.h
 create mode 100644 drivers/bus/platform/meson.build
 create mode 100644 drivers/bus/platform/platform.c
 create mode 100644 drivers/bus/platform/platform_params.c
 create mode 100644 drivers/bus/platform/private.h
 create mode 100644 drivers/bus/platform/version.map

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2.34.1