[RFC,v4,0/4] fpga: add initial KUnit tests for the subsystem

Message

Marco Pagani April 17, 2023, 12:23 p.m. UTC

This patch set introduces initial KUnit test suites for the FPGA subsystem.

Tests can be run using:
[user@localhost linux]$ ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/fpga/tests

v4:
- Fix build error

v3:
- Calling fpga_bridges_put() between reconfigurations
- Functions for registering fake modules allocate and return context structs

v2:
- Restructured code into multiple suites to test components in isolation
- Reduced code duplication using init and exit methods
- Using a get_bridges() method to build the list of bridges just before programming
- Regions and Bridges are organized topologically
- Changed bitstream/bit to images
- Allocate images dynamically
- Renamed fpga-tests to fpga-test
- Simplified Kconfig
- Add license info to the fpga-test module

Marco Pagani (4):
  fpga: add fake FPGA manager
  fpga: add fake FPGA bridge
  fpga: add fake FPGA region
  fpga: add initial KUnit test suites

 drivers/fpga/Kconfig                  |   2 +
 drivers/fpga/Makefile                 |   3 +
 drivers/fpga/tests/.kunitconfig       |   5 +
 drivers/fpga/tests/Kconfig            |  11 +
 drivers/fpga/tests/Makefile           |   6 +
 drivers/fpga/tests/fake-fpga-bridge.c | 242 +++++++++++++
 drivers/fpga/tests/fake-fpga-bridge.h |  36 ++
 drivers/fpga/tests/fake-fpga-mgr.c    | 386 +++++++++++++++++++++
 drivers/fpga/tests/fake-fpga-mgr.h    |  43 +++
 drivers/fpga/tests/fake-fpga-region.c | 259 ++++++++++++++
 drivers/fpga/tests/fake-fpga-region.h |  40 +++
 drivers/fpga/tests/fpga-test.c        | 479 ++++++++++++++++++++++++++
 12 files changed, 1512 insertions(+)
 create mode 100644 drivers/fpga/tests/.kunitconfig
 create mode 100644 drivers/fpga/tests/Kconfig
 create mode 100644 drivers/fpga/tests/Makefile
 create mode 100644 drivers/fpga/tests/fake-fpga-bridge.c
 create mode 100644 drivers/fpga/tests/fake-fpga-bridge.h
 create mode 100644 drivers/fpga/tests/fake-fpga-mgr.c
 create mode 100644 drivers/fpga/tests/fake-fpga-mgr.h
 create mode 100644 drivers/fpga/tests/fake-fpga-region.c
 create mode 100644 drivers/fpga/tests/fake-fpga-region.h
 create mode 100644 drivers/fpga/tests/fpga-test.c


base-commit: 6a8f57ae2eb07ab39a6f0ccad60c760743051026