Sun Microsystems CP3000 manual Monitoring and Control Functions, Ipmi Controller

3.1Monitoring and Control Functions

The MMC is responsible for communicating module status information to the carrier board, and also has some control at the module level. The 10GbE local PHY is held in reset until the AMC Carrier IPMI uses e-Keying to turn on the interface (to ensure that the interface is compatible). The MMC has the ability to reset the PHY through the IPMI FRU Control command.

3.2IPMI Controller

The IPMI controller consists of a 16-bit microcontroller, flash, and SRAM. The microcontroller uses I2C interface (IPMB-L) to collect data from various sensors located on the AMC. The host ATCA blade server might read data collected by the IPMI controller, and transmit it to the shelf management controller (ShMC) through the IPMB-0.

The IPMB is routed through the AMC connector to the host carrier blade and backplane. The IPMB allows the AMC MMC to be discovered by and communicate with the carrier blade and system-level management. It is always active.

The MMC communicates with the carrier controller through the local IPMB-L bus of the carrier and responds to all mandatory commands for AMC MMC (as defined in the AMC Specification), as well as some optional commands.

TABLE 3-1	Supported IPMI Commands
		IPMI/PICMG/AMC
Command		Specification	NetFn	CMD	MMC Req
IPM Device Global Commands
Get Device ID		17.1	App	01h	Mandatory
Broadcast Get Device ID		17.9	App	01h	Mandatory
Messaging Commands
Send Message		18.7	App	34h	Optional
Event Commands
Platform	Event	23.3	S/E	02h	Mandatory
Sensor Device Commands
Get Device SDR Info		29.2	S/E	20h	Mandatory

3-2Sun Netra CP3000 Advanced Mezzanine Card PCIe Hard Drive and SAS Controller User’s Guide • March 2010