82598EB Datasheet, PDF (522/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - NC-SI Support
5.4.2.2.9.2 Get System MAC Address Response (Intel Command 0x06)
5.4.2.2.10 Set Intel Management Control Formats
5.4.2.2.10.1 Set Intel Management Control Command (Intel Command 0x20)
Where:
Intel Management Control 1 is as follows:
Bit #
0
1…7
Default
value
0b
0x0
Description
Enable Critical Session Mode (Keep Phy Link Up and Veto Bit)
0b - Disabled
1b - Enabled
When critical session mode is enabled, the following behaviors are disabled:
• The PHY is not reset on PE_RST# and PCIe* resets (in-band and link drop). Other
reset events are not affected - Internal_Power_On_Reset, device disable, Force TCO,
and PHY reset by software.
• The PHY does not change its power state. As a result link speed does not change.
• The device does not initiate configuration of the PHY to avoid losing link.
Reserved
522