IXB28504XGBEFS Intel, IXB28504XGBEFS Datasheet - Page 58

• Manufacturer Part Number: IXB28504XGBEFS
• Manufacturer: Intel

Specifications of IXB28504XGBEFS

• Lead Free Status / Rohs Status: Compliant

4.7.4.1
Table 23.
4.7.4.2
4.7.5
Intel NetStructure
TPS
58
®
Processor Events
The event messages generated by the CPU sensors have an IPMB message format as
specified in the IPMI 1.5 specification.
Message format.
CPU event message format
BMC Support for Processor Sensors
Since the board processor does not have a direct connection to the ShMC, the BMC is
responsible for supporting the exchange of data between the ShMC and the board
processors.
Event Storing
A board processor, acting as a sensor, generates events and stores them in the BMC
System Events Log (SEL). The IPMI event message sent by the CPU to the BMC
contains a Sensor Number set to the Processor ID taken from SDR record describing a
given processor. When the BMC stores this event in the SEL, it updates this field with a
value assigned to a particular CPU during the building of the BMC Sensor Map.
Event Forwarding
A board processor, acting as a sensor, generates events and sends them to the ShMC.
The IPMI Send Message command with Channel number = 0h is used for this purpose
(see
within Send Message command contains a Sensor Number set to the Processor ID
taken from the SDR record describing a given processor. When the BMC forwards this
event message to the ShMC, it updates this field with a value assigned to a particular
CPU during the building of the BMC Sensor Map.
Sensors Polling
The BMC continuously polls all initialized physical (temperature, voltage and current)
sensors during normal IXB2850 board operation. When the BMC detects that a
particular sensor reading exceeds one of the thresholds defined in the SDR record, it
sends an appropriate event to ShMC. The ShMC is responsible for responding to these
events appropriately (for example, powering a board off).
Data
Request Data
Response Data
IXB2850 Packet Processing Boards
Section 8.2.3, “IPMI Bridging” on page
Byte
1
2
3
4
7:5
1
Data Field
Event Message Revision. The revision number is 04h for Event Messages
that comply with the IPMI 1.5 specification.
Sensor Type. The Sensor Type value from the SDR describing the given CPU
sensor is used.
Sensor Number. The Processor ID from the SDR describing the given CPU
sensor is used.
Event Direction/Event Type:
Event Data – The contents and format of this field is specified in:
Completion Code
• 7:7 – Event Direction; indicates the event transition direction. The value
• 6:0 – Event Type; the Event/Reading Type Code value from the SDR
•
•
•
•
0b (Assertion Event) is used.
describing the given CPU sensor is used.
Table 51, “Event data 1 field format” on page 115
Table 52, “IPMI event data for boot class” on page 116
Table 53, “IPMI event data for the POST class” on page 116
Table 54, “IPMI event data for the diagnostics class” on page 117
Table 23
95). The IPMI event message encapsulated
describes the format of the CPU Event
IXB2850—Hardware Management
Document Number: 05-2443-006
January 2007