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gerrit.openbmc.org / openbmc / openpower-occ-control / 1fe436dc227a81b642ca94191229182b19be0f53
commit1fe436dc227a81b642ca94191229182b19be0f53[log] [tgz]
authorChris Cain <cjcain@us.ibm.com>Thu Oct 10 09:41:03 2024 -0500
committerChris Cain <cjcain@us.ibm.com>Mon Oct 14 15:02:11 2024 -0500
treeeadfdc889d29ae522ee73c00f5d2fea55fa361f3
parentf0295f52536d9e508305a0e522184157966ee2f5 [diff]
Disable Idle Power Saver support in efficiency modes

IPS will not be published on DBUS when the PowerMode is set to one of
the newer efficiency modes:
  EfficiencyFavorPower
  EfficiencyFavorPerformance (OEM only)

This will prevent the Redfish interface from allowing GET/PATCH
commands and provides a way for the GUI to know when to suppress
B
displaying the parameters on the customer GUI.

Testing:
Verified on Rainier.

When in a non-efficiency mode, the Redfish query returns IPS data:
(GET /redfish/v1/Systems/system)
'''
...
    "Id": "system",
    "IdlePowerSaver": {
        "Enabled": true,
        "EnterDwellTimeSeconds": 240,
        "EnterUtilizationPercent": 8,
        "ExitDwellTimeSeconds": 10,
        "ExitUtilizationPercent": 12
    },
    "IndicatorLED": "Off",
...
'''

When in an efficiency mode, the Redfish query does not return IPS data.
'''
...
    "Id": "system",
    "IndicatorLED": "Off",
...
'''

Verified across re-ipls, OCC resets, app restarts.

Change-Id: I45bb0d8e97dab33a1a66c0d791f7bb4848bfce41
Signed-off-by: Chris Cain <cjcain@us.ibm.com>
3 files changed
tree: eadfdc889d29ae522ee73c00f5d2fea55fa361f3
  1. example/
  2. service_files/
  3. subprojects/
  4. test/
  5. .clang-format
  6. .gitignore
  7. app.cpp
  8. file.hpp
  9. i2c_occ.cpp
  10. i2c_occ.hpp
  11. LICENSE
  12. meson.build
  13. meson.options
  14. occ-active.sh
  15. occ_command.cpp
  16. occ_command.hpp
  17. occ_dbus.cpp
  18. occ_dbus.hpp
  19. occ_device.cpp
  20. occ_device.hpp
  21. occ_errors.cpp
  22. occ_errors.hpp
  23. occ_events.hpp
  24. occ_ffdc.cpp
  25. occ_ffdc.hpp
  26. occ_manager.cpp
  27. occ_manager.hpp
  28. occ_pass_through.cpp
  29. occ_pass_through.hpp
  30. occ_presence.cpp
  31. occ_presence.hpp
  32. occ_sensor.mako.hpp
  33. occ_status.cpp
  34. occ_status.hpp
  35. OWNERS
  36. pldm.cpp
  37. pldm.hpp
  38. powercap.cpp
  39. powercap.hpp
  40. powermode.cpp
  41. powermode.hpp
  42. README.md
  43. sensor_gen.py
  44. utils.cpp
  45. utils.hpp
README.md

OpenPOWER OCC Control Service

This service will handle communications to the On-Chip Controller (OCC) on Power processors. The OCC provides processor and memory temperatures, power readings, power cap support, system power mode support, and idle power saver support. OCC Control will be interfacing with the OCC to collect the temperatures and power readings, updating the system power mode, setting power caps, and idle power save parameters.

The service is started automatically when the BMC is started.

Build Project

This project can be built with meson. The typical meson workflow is: meson builddir && ninja -C builddir.

Server

The server will start automatically after BMC is powered on.

Server status: systemctl status org.open_power.OCC.Control.service

To restart the service: systemctl restart org.open_power.OCC.Control.service

Configuration

Service files are located in service_files subdirectory.

References

Power10

IBM EnergyScale for Power10 Processor-Based Systems whitepaper: https://www.ibm.com/downloads/cas/E7RL9N4E

OCC Firmware Interface Spec for Power10: https://github.com/open-power/docs/blob/P10/occ/OCC_P10_FW_Interfaces_v1_17.pdf

OCC Firmware: https://github.com/open-power/occ/tree/master-p10

Power9

IBM EnergyScale for POWER9 Processor-Based Systems: https://www-01.ibm.com/common/ssi/cgi-bin/ssialias?htmlfid=49019149USEN&

OCC Firmware Interface Spec for POWER9: https://github.com/open-power/docs/blob/P9/occ/OCC_P9_FW_Interfaces.pdf