v7: - Move enumeration of fwctl behind meson option 'fwctl'. (Dan) v6: - Rename cxl-features.control.c back to fwctl.c. (Dan) - Move features behind a meson option. (Dan) - See individual commits for specific changes from v5.
v5: - Add documentation for exported symbols. (Alison) - Create 'struct cxl_fwctl' as object under cxl_memdev. (Dan) - Make command prep common code. (Alison) - Rename fwctl.c to cxl-features-control.c. (Alison) - See individual commits for specific changes from v4. v4: - Adjust to kernel changes of input/output structs - Fixup skip/pass/fail logic - Added new kernel headers detection and dependency in meson.build v3: - Update test to use opcode instead of command id. v2: - Drop features device enumeration - Add discovery of char device under memdev The series provides support of libcxl enumerating FWCTL character device under the cxl_memdev device. It discovers the char device major and minor numbers for the CXL features device in order to allow issuing of ioctls to the device. A unit test is added to locate cxl_memdev exported by the cxl_test kernel module and issue all the supported ioctls to the associated FWCTL char device to verify that all the ioctl paths are working as expected. Kernel series: https://lore.kernel.org/linux-cxl/20250207233914.2375110-1-dave.ji...@intel.com/T/#t Dave Jiang (4): cxl: Add cxl_bus_get_by_provider() cxl: Enumerate major/minor of FWCTL char device ndctl: Add features.h from kernel UAPI cxl/test: Add test for cxl features device Documentation/cxl/lib/libcxl.txt | 26 ++ config.h.meson | 3 + cxl/fwctl/cxl.h | 56 ++++ cxl/fwctl/features.h | 179 +++++++++++++ cxl/fwctl/fwctl.h | 141 ++++++++++ cxl/lib/libcxl.c | 92 +++++++ cxl/lib/libcxl.sym | 8 + cxl/lib/private.h | 6 + cxl/libcxl.h | 7 + meson.build | 1 + meson_options.txt | 2 + test/cxl-features.sh | 31 +++ test/fwctl.c | 439 +++++++++++++++++++++++++++++++ test/meson.build | 19 ++ 14 files changed, 1010 insertions(+) create mode 100644 cxl/fwctl/cxl.h create mode 100644 cxl/fwctl/features.h create mode 100644 cxl/fwctl/fwctl.h create mode 100755 test/cxl-features.sh create mode 100644 test/fwctl.c base-commit: 1850ddcbcbf9eebd343c6e87a2c55f3f5e3930c4 -- 2.49.0
