Kontron AM4211 - Manual (Page 44)

29 AM4211
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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. The sensor also includes a field, identifying the sensor owner's address in the system.
This allows the carrier to pre-pend an appropriate code when the SDR is scanned so the reader of the sensor
list can determine which sensors belong to which physical board in the ATCA carrier or uTCA system.
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
0 IPMI Info-1
C0h
(OEM Kontron) 70h
(Discrete)
Internal Management
Controller firmware
diagnostic
1 IPMI Info-2
C0h
(OEM Kontron) 75h
(Discrete)
Internal Management
Controller firmware
diagnostic
2 FRU Agent
C5h
(OEM Kontron FRU
Info Agent State)
0Ah
(Generic Discrete)
FRU Information
Agent - FRU Data
Error Detection
Offset 6: transition to
Degraded
Offset 8: Install Error
3 ModuleHotSwap
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.