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[v3,0/6] OpenCAPI support for Witherspoon

Message ID cover.91d7db15748d5e26facfa8bf3911020ec614222d.1535688953.git-series.andrew.donnellan@au1.ibm.com
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Series OpenCAPI support for Witherspoon | expand

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Andrew Donnellan Aug. 31, 2018, 4:15 a.m. UTC 
This series implements OpenCAPI support for Witherspoon.

Patch 1 is a fixup to the OCC GPU presence detection.

Patches 2-4 are restructuring of the NPU code in preparation for
platforms that support both NVLink and OpenCAPI.

Patch 5 is a fixup to OpenCAPI I2C reset and presence detection.

Patch 6 adds Witherspoon-specific platform support, including the
Witherspoon-specific device presence and type detection.

v1->v2:

- Address review comments from Reza/Alistair/Oliver

v2->v3:

- make OCC GPU presence less noisy
- add check for npu->devices overflow
- get rid of ocapi_global_mmio_base
- Abort NPU init if we can't find the device presence I2C port
- define device detection callback for ZZ
- add comment to explain OpenCAPI slot presence function
- rename the i2c fields in i2c refactoring commit message
- refactor link type/index setting in witherspoon platform code
- add explanatory comment for i2c reset settings in witherspoon platform
code

Andrew

Andrew Donnellan (6):
  occ: Wait if OCC GPU presence status not immediately available
  npu2: Split device index into brick and link index
  hw/npu2: Common NPU2 init routine between NVLink and OpenCAPI
  hw/npu2, platform: Add NPU2 platform device detection callback
  hw/npu2, platform: Restructure OpenCAPI i2c reset/presence pins
  platforms/astbmc/witherspoon: Implement OpenCAPI support

 core/init.c                    |   2 +-
 core/platform.c                |  26 +--
 hdata/spira.c                  |   1 +-
 hw/npu2-common.c               | 234 +++++++++++++++++++++++--
 hw/npu2-hw-procedures.c        |   8 +-
 hw/npu2-opencapi.c             | 324 +++++++++++-----------------------
 hw/npu2.c                      | 257 ++++++++-------------------
 hw/occ.c                       |  16 +-
 include/npu2-regs.h            |  14 +-
 include/npu2.h                 |  26 ++-
 include/platform.h             |  16 +-
 include/skiboot.h              |   1 +-
 platforms/astbmc/witherspoon.c | 207 ++++++++++++++++++++++-
 platforms/astbmc/zaius.c       |  25 +--
 platforms/ibm-fsp/zz.c         |  26 +--
 15 files changed, 724 insertions(+), 459 deletions(-)

base-commit: f3d801c01f978a346b70e9929028a3b7a651bd97