linux-kernel - [PATCH 00/10] Add support for OpenCAPI SCM devices

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Date:   Fri, 25 Oct 2019 15:46:55 +1100
From:   "Alastair D'Silva" <alastair@....ibm.com>
To:     alastair@...ilva.org
Cc:     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>,
        Keith Busch <keith.busch@...el.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Anton Blanchard <anton@...abs.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Anju T Sudhakar <anju@...ux.vnet.ibm.com>,
        Cédric Le Goater <clg@...d.org>,
        Mahesh Salgaonkar <mahesh@...ux.vnet.ibm.com>,
        Hari Bathini <hbathini@...ux.ibm.com>,
        Vasant Hegde <hegdevasant@...ux.vnet.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Allison Randal <allison@...utok.net>,
        Greg Kurz <groug@...d.org>,
        Nicholas Piggin <npiggin@...il.com>,
        Alexey Kardashevskiy <aik@...abs.ru>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Hildenbrand <david@...hat.com>,
        Oscar Salvador <osalvador@...e.com>,
        Michal Hocko <mhocko@...e.com>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        Wei Yang <richard.weiyang@...il.com>, Qian Cai <cai@....pw>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linux-nvdimm@...ts.01.org, linux-mm@...ck.org
Subject: [PATCH 00/10] Add support for OpenCAPI SCM devices

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

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

The first patch (in memory_hotplug) has reviews/acks, but has
not yet made it upstream.

Alastair D'Silva (10):
  memory_hotplug: Add a bounds check to __add_pages
  nvdimm: remove prototypes for nonexistent functions
  powerpc: Add OPAL calls for LPC memory alloc/release
  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
  nvdimm: Add driver for OpenCAPI Storage Class Memory
  powerpc: Enable OpenCAPI Storage Class Memory driver on bare metal
  ocxl: Conditionally bind SCM devices to the generic OCXL driver

 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      |   41 +
 arch/powerpc/platforms/powernv/opal-call.c |    2 +
 drivers/misc/ocxl/Kconfig                  |    7 +
 drivers/misc/ocxl/config.c                 |   50 +
 drivers/misc/ocxl/core.c                   |   60 +
 drivers/misc/ocxl/link.c                   |   60 +
 drivers/misc/ocxl/ocxl_internal.h          |   36 +
 drivers/misc/ocxl/pci.c                    |    3 +
 drivers/nvdimm/Kconfig                     |   17 +
 drivers/nvdimm/Makefile                    |    3 +
 drivers/nvdimm/nd-core.h                   |    4 -
 drivers/nvdimm/ocxl-scm.c                  | 2210 ++++++++++++++++++++
 drivers/nvdimm/ocxl-scm_internal.c         |  232 ++
 drivers/nvdimm/ocxl-scm_internal.h         |  331 +++
 drivers/nvdimm/ocxl-scm_sysfs.c            |  219 ++
 include/linux/memory_hotplug.h             |    5 +
 include/misc/ocxl.h                        |   19 +
 include/uapi/linux/ocxl-scm.h              |  128 ++
 mm/memory_hotplug.c                        |   22 +
 23 files changed, 3456 insertions(+), 4 deletions(-)
 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/linux/ocxl-scm.h

-- 
2.21.0