82598EB Datasheet, PDF (457/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - SMBus Pass-Through Transactions
Table 5-12. Status Data Byte 1
Bit
Name
Description
7
Reserved
Reserved.
6
TCO Command Aborted
1b = A TCO command abort event occurred since the last read status
cycle.
0b = A TCO command abort event did not occur since the last read status
cycle.
5
Link Status Indication
0b = LAN link down.
1b = LAN link up¹.
4
PHY Link Forced Up
Contains the value of the PHY_Link_Up bit. When set, indicates that the
PHY link is configured to keep the link up.
3
Initialization Indication
0b = An EEPROM reload event has not occurred since the last Read Status
cycle.
1b = An EEPROM reload event has occurred since the last Read Status
cycle².
2
Reserved
Reserved.
1:0
Power State
00b = Dr state.
01b = D0u state.
10b = D0 state.
11b = D3 state³.
1. When the 82598EB is operating in teaming mode, and presented as one SMBus device, the link indication is 0b only when both
links (on both ports) are down. If one of the LANs is disabled, its link is considered to be down.
2. This indication is asserted when 82598EB manageability block reloads the EEPROM and its internal database is updated to the
EEPROM default values. This is an indication that the external BMC should reconfigure 82598EB, if other values other than the
EEPROM default should be configured.
3. In single-address mode, 82598EB reports the highest power-state modes in both devices. The "D" state is marked in this order:
D0, D0u, Dr, and D3.
Status data byte 2 is used by the BMC to indicate whether the LAN device driver is alive and running.
The LAN device driver valid indication is a bit set by the LAN device driver during initialization; the bit is
cleared when the LAN device driver enters a Dx state or is cleared by the hardware on a PCI reset.
Bits 2 and 1 indicate that the LAN device driver is stuck. Bit 2 indicates whether the interrupt line of the
LAN function is asserted. Bit 1 indicates whether the LAN device driver dealt with the interrupt line
before the last Read Status cycle. Table 5-13 lists status data byte 2.
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