Kontron AM4220 - Manual (Page 48)

33 AM4220
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5.1.2 IPMI Sensors
The MMC includes many sensors for voltage or temperature monitoring and various others for pass/fail type
signal monitoring.
Every sensor is associated with a Sensor Data Record (SDR). Sensor Data Records contain information about
the sensors identification such as sensor type, sensor name and sensor unit. SDRs also contain the
configuration of a specific sensor such as threshold/hystheresis, event generation capabilities that specifies
sensor behavior. Some field of the sensor SDR are configurable through IPMI v1.5 command and are set to
built-in initial values. Finally one field which is the sensor owner must reflect the module addresses that
allow the AMC Carrier to identify the owner of the SDR when it is scanned from the module management
controller and merged within the AMC Carrier Device SDR repository.
From an IPMI perspective, the MMC is set up as a satellite management controller (SMC). It does support
sensor devices, and uses the IPMI static sensor population feature of IPMI v1.5. All SDRs can be queried using
Device SDR commands to the MMC.
The sensor name in its SDR has a name prefix which after module insertion is automatically adapted to the
physical position of the module in a carrier or in a μTCA chassis. The format of this prefix is:
• in AMC bay 1…8 or μTCA slot 1…8: ‘A1:’, ‘A2:’, ‘A3:’, ‘A4:’, ‘B1:’, ‘B2:’, ‘B3:’, ‘B4:’.
• in μTCA slot 9…12: 'C1:', 'C2:', 'C3:', 'C4:'.
Please note that in the case that the module is installed elsewhere, then the IPMB-L address of the module is
unknown and the interface is off.
Module sensors that have been implemented are listed in the sensor list below.
Table 5-1:Sensor list
SDR
ID Name Sensor Type Code Reading Type Code Description Event Offset
1 B1:IPMI Info-1
C0h
(OEM Kontron) 6Fh
(Sensor Specific) Firmware Debug
sensor
2 B1:IPMI Info-2
C0h
(OEM Kontron) 6Fh
(Sensor Specific) Firmware Debug
sensor
3 B1:FRU Agent
C5h
(OEM Kontron FRU
Info Agent State)
0Ah
(Discrete)
For additional
information, refer
to section Kontron
FRU Info Agent
Offset 6: transition to
Degraded
Offset 8: Install Error
4
B1:ModuleHotSwa
p
F2h
(Module Hot
Swap)
6Fh
(Sensor Specific) Refer to AMC.0
specification.
Offset 0: Module Handle
Closed
Offset 1: Module Handle
Opened
Offset 2: Quiesced
Offset 3: Backend Power
Failure
Offset 4: Backend Power
Shutdown
Refer to AMC.0 R2.0 Section
3.6.6 Module Hot Swap
Sensor.