[GIT PULL] NTB changes for 4.2

[Jon Mason]

Hi Linus,
Please consider pulling the following for inclusion into 4.2.  It
includes a pretty significant reworking of the NTB core code, but has
already produced some significant perf improvements.

Thanks,
Jon

---

The following changes since commit d8133356e99713bd023b229de107ddd6dd6d375a:

  Merge tag 'pci-v4.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci (2015-06-23 13:41:24 -0700)

are available in the git repository at:

  git://github.com/jonmason/ntb tags/ntb-4.2

for you to fetch changes up to bf44fe4671f97ee17d178e08c2d3b346188d062b:

  NTB: Add split BAR output for debugfs stats (2015-07-04 14:09:32 -0400)

----------------------------------------------------------------
A very significant modification to NTB in this series.

An abstraction layer was added to allow the hardware and clients to be
easily added.  This required rewriting the NTB transport layer for this
abstraction layer.  This modification will allow future
"high performance" NTB clients.

In addition to this change, a number of performance modifications were
added.  These changes include NUMA enablement, using CPU memcpy instead
of asyncdma, and modification of NTB layer MTU size.

----------------------------------------------------------------
Allen Hubbe (12):
      NTB: Move files in preparation for NTB abstraction
      NTB: Add NTB hardware abstraction layer
      NTB: Split ntb_hw_intel and ntb_transport drivers
      NTB: Differentiate transport link down messages
      NTB: Do not advance transport RX on link down
      NTB: Reset transport QP link stats on down
      NTB: Add parameters for Intel SNB B2B addresses
      NTB: Add ping pong test client
      NTB: Add tool test client
      NTB: Rate limit ntb_qp_link_work
      NTB: Use NUMA memory and DMA chan in transport
      NTB: Use NUMA memory in Intel driver

Dave Jiang (10):
      NTB: Read peer info from local SPAD in transport
      NTB: Enable link for Intel root port mode in probe
      NTB: Check the device ID to set errata flags
      NTB: Improve performance with write combining
      NTB: Default to CPU memcpy for performance
      NTB: Rename Intel code names to platform names
      NTB: Increase transport MTU to 64k from 16k
      NTB: Print driver name and version in module init
      NTB: Change WARN_ON_ONCE to pr_warn_once on unsafe
      NTB: Add split BAR output for debugfs stats

 Documentation/ntb.txt               |  127 ++
 MAINTAINERS                         |   12 +-
 drivers/net/Kconfig                 |    4 +-
 drivers/net/ntb_netdev.c            |   58 +-
 drivers/ntb/Kconfig                 |   39 +-
 drivers/ntb/Makefile                |    5 +-
 drivers/ntb/hw/Kconfig              |    1 +
 drivers/ntb/hw/Makefile             |    1 +
 drivers/ntb/hw/intel/Kconfig        |    7 +
 drivers/ntb/hw/intel/Makefile       |    1 +
 drivers/ntb/hw/intel/ntb_hw_intel.c | 2274 +++++++++++++++++++++++++++++++++++
 drivers/ntb/hw/intel/ntb_hw_intel.h |  342 ++++++
 drivers/ntb/ntb.c                   |  251 ++++
 drivers/ntb/ntb_hw.c                | 1895 -----------------------------
 drivers/ntb/ntb_hw.h                |  256 ----
 drivers/ntb/ntb_regs.h              |  177 ---
 drivers/ntb/ntb_transport.c         | 1029 +++++++++-------
 drivers/ntb/test/Kconfig            |   19 +
 drivers/ntb/test/Makefile           |    2 +
 drivers/ntb/test/ntb_pingpong.c     |  250 ++++
 drivers/ntb/test/ntb_tool.c         |  556 +++++++++
 include/linux/ntb.h                 |  970 ++++++++++++++-
 include/linux/ntb_transport.h       |   85 ++
 23 files changed, 5545 insertions(+), 2816 deletions(-)
 create mode 100644 Documentation/ntb.txt
 create mode 100644 drivers/ntb/hw/Kconfig
 create mode 100644 drivers/ntb/hw/Makefile
 create mode 100644 drivers/ntb/hw/intel/Kconfig
 create mode 100644 drivers/ntb/hw/intel/Makefile
 create mode 100644 drivers/ntb/hw/intel/ntb_hw_intel.c
 create mode 100644 drivers/ntb/hw/intel/ntb_hw_intel.h
 create mode 100644 drivers/ntb/ntb.c
 delete mode 100644 drivers/ntb/ntb_hw.c
 delete mode 100644 drivers/ntb/ntb_hw.h
 delete mode 100644 drivers/ntb/ntb_regs.h
 create mode 100644 drivers/ntb/test/Kconfig
 create mode 100644 drivers/ntb/test/Makefile
 create mode 100644 drivers/ntb/test/ntb_pingpong.c
 create mode 100644 drivers/ntb/test/ntb_tool.c
 create mode 100644 include/linux/ntb_transport.h
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