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

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Date:   Fri, 21 Feb 2020 14:26:53 +1100
From:   "Alastair D'Silva" <alastair@....ibm.com>
To:     alastair@...ilva.org
Cc:     "Aneesh Kumar K . V" <aneesh.kumar@...ux.ibm.com>,
        "Oliver O'Halloran" <oohall@...il.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Frederic Barrat <fbarrat@...ux.ibm.com>,
        Andrew Donnellan <ajd@...ux.ibm.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Rob Herring <robh@...nel.org>,
        Anton Blanchard <anton@...abs.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Mahesh Salgaonkar <mahesh@...ux.vnet.ibm.com>,
        Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>,
        Cédric Le Goater <clg@...d.org>,
        Anju T Sudhakar <anju@...ux.vnet.ibm.com>,
        Hari Bathini <hbathini@...ux.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kurz <groug@...d.org>,
        Nicholas Piggin <npiggin@...il.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Alexey Kardashevskiy <aik@...abs.ru>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-nvdimm@...ts.01.org, linux-mm@...ck.org
Subject: [PATCH v3 00/27] Add support for OpenCAPI Persistent Memory devices

From: Alastair D'Silva <alastair@...ilva.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

-- 
2.24.1