This is an RFC patchset to add a new utility and library to support CXL devices. This comprehends the kernel's sysfs layout for CXL devices, and implements a command submission harness for CXL mailbox commands via ioctl()s definied by the cxl_mem driver.
These patches include: - libcxl representation of cxl_mem devices - A command submission harness through libcxl - A 'cxl-list' command which displays information about a device Things missing, or next steps are: - A test/libcxl.c to exercise all library interfaces - Testing 'vendor specific' commands exported by the QEMU implementation[1] - API documentation The latest kernel patches can be found at [2]. An ndctl branch with these patches is also available at [3] [1]: https://lore.kernel.org/qemu-devel/[email protected]/ [2]: https://gitlab.com/bwidawsk/linux/-/commits/cxl-2.0v3 [3]: https://github.com/pmem/ndctl/tree/cxl-2.0v1 Vishal Verma (5): cxl: add a cxl utility and libcxl library cxl: add a local copy of the cxl_mem UAPI header libcxl: add support for command query and submission libcxl: add accessors for retrieving 'Identify' information cxl/list: augment cxl-list with more data from the identify command Documentation/cxl/cxl-list.txt | 65 +++ Documentation/cxl/cxl.txt | 34 ++ Documentation/cxl/human-option.txt | 8 + Documentation/cxl/verbose-option.txt | 5 + configure.ac | 3 + Makefile.am | 4 +- Makefile.am.in | 5 + cxl/lib/private.h | 87 ++++ cxl/lib/libcxl.c | 714 +++++++++++++++++++++++++++ cxl/builtin.h | 8 + cxl/cxl_mem.h | 176 +++++++ cxl/libcxl.h | 66 +++ util/filter.h | 2 + util/json.h | 4 + util/main.h | 3 + cxl/cxl.c | 95 ++++ cxl/list.c | 138 ++++++ util/filter.c | 20 + util/json.c | 46 ++ Documentation/cxl/Makefile.am | 58 +++ cxl/Makefile.am | 21 + cxl/lib/Makefile.am | 32 ++ cxl/lib/libcxl.pc.in | 11 + cxl/lib/libcxl.sym | 41 ++ 24 files changed, 1644 insertions(+), 2 deletions(-) create mode 100644 Documentation/cxl/cxl-list.txt create mode 100644 Documentation/cxl/cxl.txt create mode 100644 Documentation/cxl/human-option.txt create mode 100644 Documentation/cxl/verbose-option.txt create mode 100644 cxl/lib/private.h create mode 100644 cxl/lib/libcxl.c create mode 100644 cxl/builtin.h create mode 100644 cxl/cxl_mem.h create mode 100644 cxl/libcxl.h create mode 100644 cxl/cxl.c create mode 100644 cxl/list.c create mode 100644 Documentation/cxl/Makefile.am create mode 100644 cxl/Makefile.am create mode 100644 cxl/lib/Makefile.am create mode 100644 cxl/lib/libcxl.pc.in create mode 100644 cxl/lib/libcxl.sym -- 2.29.2 _______________________________________________ Linux-nvdimm mailing list -- [email protected] To unsubscribe send an email to [email protected]
