[PATCH v3 00/27] Add support for OpenCAPI Persistent Memory devices

[Alastair D'Silva]

From: Alastair D'Silva <alastair at d-silva.org>

This series adds support for OpenCAPI Persistent Memory devices, exposing
them as nvdimms so that we can make use of the existing infrastructure.

Alastair D'Silva (27):
  powerpc: Add OPAL calls for LPC memory alloc/release
  mm/memory_hotplug: Allow check_hotplug_memory_addressable to be called
    from drivers
  powerpc: Map & release OpenCAPI LPC memory
  ocxl: Remove unnecessary externs
  ocxl: Address kernel doc errors & warnings
  ocxl: Tally up the LPC memory on a link & allow it to be mapped
  ocxl: Add functions to map/unmap LPC memory
  ocxl: Emit a log message showing how much LPC memory was detected
  ocxl: Save the device serial number in ocxl_fn
  powerpc: Add driver for OpenCAPI Persistent Memory
  powerpc: Enable the OpenCAPI Persistent Memory driver for
    powernv_defconfig
  powerpc/powernv/pmem: Add register addresses & status values to the
    header
  powerpc/powernv/pmem: Read the capability registers & wait for device
    ready
  powerpc/powernv/pmem: Add support for Admin commands
  powerpc/powernv/pmem: Add support for near storage commands
  powerpc/powernv/pmem: Register a character device for userspace to
    interact with
  powerpc/powernv/pmem: Implement the Read Error Log command
  powerpc/powernv/pmem: Add controller dump IOCTLs
  powerpc/powernv/pmem: Add an IOCTL to report controller statistics
  powerpc/powernv/pmem: Forward events to userspace
  powerpc/powernv/pmem: Add an IOCTL to request controller health & perf
    data
  powerpc/powernv/pmem: Implement the heartbeat command
  powerpc/powernv/pmem: Add debug IOCTLs
  powerpc/powernv/pmem: Expose SMART data via ndctl
  powerpc/powernv/pmem: Expose the serial number in sysfs
  powerpc/powernv/pmem: Expose the firmware version in sysfs
  MAINTAINERS: Add myself & nvdimm/ocxl to ocxl

 MAINTAINERS                                   |    3 +
 arch/powerpc/configs/powernv_defconfig        |    5 +
 arch/powerpc/include/asm/opal-api.h           |    2 +
 arch/powerpc/include/asm/opal.h               |    3 +
 arch/powerpc/include/asm/pnv-ocxl.h           |   40 +-
 arch/powerpc/platforms/powernv/Kconfig        |    3 +
 arch/powerpc/platforms/powernv/Makefile       |    1 +
 arch/powerpc/platforms/powernv/ocxl.c         |   43 +
 arch/powerpc/platforms/powernv/opal-call.c    |    2 +
 arch/powerpc/platforms/powernv/pmem/Kconfig   |   21 +
 arch/powerpc/platforms/powernv/pmem/Makefile  |    7 +
 arch/powerpc/platforms/powernv/pmem/ocxl.c    | 1991 +++++++++++++++++
 .../platforms/powernv/pmem/ocxl_internal.c    |  213 ++
 .../platforms/powernv/pmem/ocxl_internal.h    |  254 +++
 .../platforms/powernv/pmem/ocxl_sysfs.c       |   46 +
 drivers/misc/ocxl/config.c                    |   74 +-
 drivers/misc/ocxl/core.c                      |   61 +
 drivers/misc/ocxl/link.c                      |   53 +
 drivers/misc/ocxl/ocxl_internal.h             |   45 +-
 include/linux/memory_hotplug.h                |    5 +
 include/misc/ocxl.h                           |  122 +-
 include/uapi/linux/ndctl.h                    |    1 +
 include/uapi/nvdimm/ocxl-pmem.h               |  127 ++
 mm/memory_hotplug.c                           |    4 +-
 24 files changed, 3029 insertions(+), 97 deletions(-)
 create mode 100644 arch/powerpc/platforms/powernv/pmem/Kconfig
 create mode 100644 arch/powerpc/platforms/powernv/pmem/Makefile
 create mode 100644 arch/powerpc/platforms/powernv/pmem/ocxl.c
 create mode 100644 arch/powerpc/platforms/powernv/pmem/ocxl_internal.c
 create mode 100644 arch/powerpc/platforms/powernv/pmem/ocxl_internal.h
 create mode 100644 arch/powerpc/platforms/powernv/pmem/ocxl_sysfs.c
 create mode 100644 include/uapi/nvdimm/ocxl-pmem.h

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2.24.1