82598EB Datasheet, PDF (523/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - NC-SI Support
5.4.2.2.10.2 Set Intel Management Control Response (Intel Command 0x20)
5.4.2.2.11 Get Intel Management Control Formats
5.4.2.2.11.1 Get Intel Management Control Command (Intel Command 0x21)
Where:
Intel Management Control 1 is as described in Section 5.4.2.2.10.2.
5.4.2.2.11.2 Get Intel Management Control Response (Intel Command 0x21)
5.4.2.2.12 TCO Reset
This command causes the NC to perform TCO reset, if force TCO reset is enabled in the EEPROM.
If the BMC has detected that the OS is hung and has blocked the Rx/Tx path, the force TCO reset clears
the data-path (Rx/Tx) of the NC to enable the BMC to transmit/receive packets through the NC.
When this command is issued to a channel in a package, it applies only to the specific channel.
After successfully performing the command, the NC considers the Force TCO command as an indication
that the OS is hung and clears the DRV_LOAD flag (disable the LAN device driver).
523