System Management: Sensors and Sensor Data Records
10009109-01 ATCA-9305 User’s Manual 7-49
The IPMC implements a Device Sensor Data Record (SDR) Repository that contains SDRs for
the IPMC, the FRU device, and each sensor. A system management controller may use the
Get Device SDR command to read the repository and dynamically discover the capabilities
of the board. Refer to the IPMI specification (listed in Table1 -2) for m ore informatio n on
using Sensor Data Records and the Device SDR Repository.
Under certain circumstances, some sensors connected to the IPMC can generate Event Mes-
sages for the system management controller. To enable these messages, the system man-
agement controller must send a Set Event Receiver command to the IPMC, along with the
address of the Event Receiver. Table 7-48 shows the format of an Event Message:
Table 7-48: Event Message Format
Cav1 IIC POST Processor = 07 Predictive-failure
Discrete = 04
0x03 0x60 Yes
Cav1 Boot Processor = 07 Predictive-failure
Discrete = 04
0x03 0x60 Yes
Cav2 SDRAM
POST
Memory = 0C Sensor specific
discrete = 6F
0x03 0x61 Yes
Cav2 IIC POST Processor = 07 Predictive-failure
Discrete = 04
0x03 0x61 Yes
Cav2 Boot Processor = 07 Predictive-failure
Discrete = 04
0x03 0x61 Yes
Version change Version Change Sensor specific
discrete = 6F
0xA0 0x60 Yes
Async Pld Rst Power Supply = 08 Digital Discrete
= 03
0xA0 0x60 Yes
Payload Power Power Supply = 08 Digital Discrete
= 03
0xA0 0x60 Yes
Byte:1Field: Description:
0 RsSA Responder’s Slave Address (Address of Event Receiver)
1 NetFn/RsLUN Net Function Code (0x04) in upper 6 bits; Responder’s LUN in lower 2
bits
2 Chk 1 Checksum #1
3 RqSA Requester’s Slave Address (Address of our board on IPMB)
4 RqSeq/RqLUN Request Sequence number in upper 6 bits; Requester’s LUN in lower 2
bits
5 Cmd Command (Always 0x02 for event message)
6 EvMRev Event Message Revision (0x04 for IPMI 1.5)
7 Sensor Type Indicates event class or type of sensor that generated the message
8 Sensor Number A unique number indicating the sensor that generated the message
Name:
Sensor
Type:
Event Readin g
Type:
Enity
ID:
Entity
Instance:
Event
Gen: