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gerrit.openbmc.org / openbmc / phosphor-power / 6345c6c569603d45f20c64029e731de06f55f4f0
commit6345c6c569603d45f20c64029e731de06f55f4f0[log] [tgz]
authorShawn McCarney <shawnmm@us.ibm.com>Mon May 04 10:35:05 2020 -0500
committerShawn McCarney <shawnmm@us.ibm.com>Wed May 06 17:05:22 2020 +0000
tree97514798a50e93adf860cd5e5308279fd7fabd1c
parent4e016652d8240570a2ec300fcadd5852543336a7 [diff]
regulators: Implement D-Bus configure method

The phosphor-regulators D-Bus configure method is called from a service
file when booting the BMC system.  The method is called shortly before
the regulators are enabled (turned on).

Previously the configure method did not do anything; it was a
placeholder.

This commit adds the implementation of the configure method.  The method
now configures the regulator devices in the system using the rules and
actions in the JSON config file.

Also commented out the partial implementation of the D-Bus monitor
method.  This method has not been fully implemented or tested yet.

Tested:
  * Tested phosphor-regulators application through chassison/chassisoff
    and poweron/poweroff.
  * Verified systemd state and journal messages.
  * Verified that all configuration specified in the config file was
    applied to the regulators.
  * Tested when an I2C failure occurs when configuring a regulator.
  * Verified that monitoring can be safely enabled and disabled but it
    performs no current function.

Signed-off-by: Shawn McCarney <shawnmm@us.ibm.com>
Change-Id: I722464a50f572c1a6e23aa13c46238d449312f31
1 file changed
tree: 97514798a50e93adf860cd5e5308279fd7fabd1c
  1. cold-redundancy/
  2. example/
  3. org/
  4. phosphor-power-supply/
  5. phosphor-regulators/
  6. power-sequencer/
  7. power-supply/
  8. services/
  9. test/
  10. tools/
  11. .clang-format
  12. .gitignore
  13. argument.hpp
  14. device.hpp
  15. device_monitor.hpp
  16. elog-errors.hpp
  17. file.hpp
  18. gpio.cpp
  19. gpio.hpp
  20. LICENSE
  21. MAINTAINERS
  22. meson.build
  23. meson_options.txt
  24. names_values.hpp
  25. pmbus.cpp
  26. pmbus.hpp
  27. README.md
  28. types.hpp
  29. utility.cpp
  30. utility.hpp
README.md

Code for detecting and analyzing power faults on Witherspoon.

To Build

To build this package, do the following steps:

    1. meson build
    2. ninja -C build

To clean the repository again run `rm -rf build`.

Power Supply Monitor and Util JSON config

Several applications in this repository require a PSU JSON config to run. The JSON config file provides information for:

  • Where to access the pmbus attributes
  • Which attribute file in pmbus maps to which property and interface in D-Bus
  • Which kernel device directory is used on which PSU

There is an example psu.json to describe the necessary configurations.

  • inventoryPMBusAccessType defines the pmbus access type, which tells the service which sysfs type to use to read the attributes. The possible values are:
    • Base: The base dir, e.g. /sys/bus/i2c/devices/3-0069/
    • Hwmon: The hwmon dir, e.g. /sys/bus/i2c/devices/3-0069/hwmon/hwmonX/
    • Debug: The pmbus debug dir, e.g. /sys/kernel/debug/pmbus/hwmonX/
    • DeviceDebug: The device debug dir, e.g. '/sys/kernel/debug/./`
    • HwmonDeviceDebug: The hwmon device debug dir, e.g. /sys/kernel/debug/pmbus/hwmonX/cffps1/
  • fruConfigs defines the mapping between the attribute file and the FRU inventory interface and property. The configuration example below indicates that the service will read part_number attribute file from a directory specified by the above pmbus access type, and assign to PartNumber property in xyz.openbmc_project.Inventory.Decorator.Asset interface.
      "fruConfigs": [
    {
      "propertyName": "PartNumber",
      "fileName": "part_number",
      "interface": "xyz.openbmc_project.Inventory.Decorator.Asset"
    }
  ]
  • psuDevices defines the kernel device dir for each PSU in inventory. The configuration example below indicates that powersupply0's device is located in /sys/bus/i2c/devices/3-0069.
      "psuDevices": {
    "/xyz/openbmc_project/inventory/system/chassis/motherboard/powersupply0" : "/sys/bus/i2c/devices/3-0069",
  }