[PATCH v2 00/27] Add support for OpenCAPI SCM devices

[Alastair D'Silva]

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

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

V2:
  - "powerpc: Map & release OpenCAPI LPC memory"
      - Fix #if -> #ifdef
      - use pci_dev_id to get the bdfn
      - use __be64 to hold be data
      - indent check_hotplug_memory_addressable correctly 
      - Remove export of check_hotplug_memory_addressable
  - "ocxl: Conditionally bind SCM devices to the generic OCXL driver"
      - Improve patch description and remove redundant default
  - "nvdimm: Add driver for OpenCAPI Storage Class Memory"
      - Mark a few funcs as static as identified by the 0day bot
      - Add OCXL dependancies to OCXL_SCM
      - Use memcpy_mcsafe in scm_ndctl_config_read
      - Rename scm_foo_offset_0x00 to scm_foo_header_parse & add docs
      - Name DIMM attribs "ocxl" rather than "scm"
      - Split out into base + many feature patches
  - "powerpc: Enable OpenCAPI Storage Class Memory driver on bare metal"
      - Build DEV_DAX & friends as modules
  - "ocxl: Conditionally bind SCM devices to the generic OCXL driver"
      - Patch dropped (easy enough to maintain this out of tree for development)
  - "ocxl: Tally up the LPC memory on a link & allow it to be mapped"
      - Add a warning if an unmatched lpc_release is called
  - "ocxl: Add functions to map/unmap LPC memory"
      - Use EXPORT_SYMBOL_GPL


Alastair D'Silva (27):
  memory_hotplug: Add a bounds check to __add_pages
  nvdimm: remove prototypes for nonexistent functions
  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: Tally up the LPC memory on a link & allow it to be mapped
  ocxl: Add functions to map/unmap LPC memory
  ocxl: Save the device serial number in ocxl_fn
  ocxl: Free detached contexts in ocxl_context_detach_all()
  nvdimm: Add driver for OpenCAPI Storage Class Memory
  nvdimm/ocxl: Add register addresses & status values to header
  nvdimm/ocxl: Read the capability registers & wait for device ready
  nvdimm/ocxl: Add support for Admin commands
  nvdimm/ocxl: Add support for near storage commands
  nvdimm/ocxl: Register a character device for userspace to interact
    with
  nvdimm/ocxl: Implement the Read Error Log command
  nvdimm/ocxl: Add controller dump IOCTLs
  nvdimm/ocxl: Add an IOCTL to report controller statistics
  nvdimm/ocxl: Forward events to userspace
  nvdimm/ocxl: Add an IOCTL to request controller health & perf data
  nvdimm/ocxl: Support firmware update via sysfs
  nvdimm/ocxl: Implement the heartbeat command
  nvdimm/ocxl: Add debug IOCTLs
  nvdimm/ocxl: Implement Overwrite
  nvdimm/ocxl: Expose SMART data via ndctl
  powerpc: Enable OpenCAPI Storage Class Memory driver on bare metal
  MAINTAINERS: Add myself & nvdimm/ocxl to ocxl

 MAINTAINERS                                |    3 +
 arch/powerpc/configs/powernv_defconfig     |    4 +
 arch/powerpc/include/asm/opal-api.h        |    2 +
 arch/powerpc/include/asm/opal.h            |    3 +
 arch/powerpc/include/asm/pnv-ocxl.h        |    2 +
 arch/powerpc/platforms/powernv/ocxl.c      |   42 +
 arch/powerpc/platforms/powernv/opal-call.c |    2 +
 drivers/misc/ocxl/config.c                 |   50 +
 drivers/misc/ocxl/context.c                |    6 +-
 drivers/misc/ocxl/core.c                   |   60 +
 drivers/misc/ocxl/link.c                   |   60 +
 drivers/misc/ocxl/ocxl_internal.h          |   36 +
 drivers/nvdimm/Kconfig                     |    2 +
 drivers/nvdimm/Makefile                    |    2 +-
 drivers/nvdimm/nd-core.h                   |    4 -
 drivers/nvdimm/ocxl/Kconfig                |   21 +
 drivers/nvdimm/ocxl/Makefile               |    7 +
 drivers/nvdimm/ocxl/scm.c                  | 2220 ++++++++++++++++++++
 drivers/nvdimm/ocxl/scm_internal.c         |  238 +++
 drivers/nvdimm/ocxl/scm_internal.h         |  284 +++
 drivers/nvdimm/ocxl/scm_sysfs.c            |  163 ++
 include/linux/memory_hotplug.h             |    5 +
 include/misc/ocxl.h                        |   19 +
 include/uapi/nvdimm/ocxl-scm.h             |  127 ++
 mm/memory_hotplug.c                        |   21 +
 25 files changed, 3377 insertions(+), 6 deletions(-)
 create mode 100644 drivers/nvdimm/ocxl/Kconfig
 create mode 100644 drivers/nvdimm/ocxl/Makefile
 create mode 100644 drivers/nvdimm/ocxl/scm.c
 create mode 100644 drivers/nvdimm/ocxl/scm_internal.c
 create mode 100644 drivers/nvdimm/ocxl/scm_internal.h
 create mode 100644 drivers/nvdimm/ocxl/scm_sysfs.c
 create mode 100644 include/uapi/nvdimm/ocxl-scm.h

-- 
2.23.0