Data Sheet

Ethernet Controller I210 — Programming Interface
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8.22.4 Management Ethernet Type Filters- METF (0x5060 + 4*n
[n=0...3]; RW)
The METF registers are written by the MC and are not accessible to the host for writing. The registers
are used to filter manageability packets. See Section 10.3.
Reset - The METF registers are cleared on LAN_PWR_GOOD only. The initial values for this register
might be loaded from the Flash after power-up reset.
8.22.5 Management Control Register - MANC (0x5820; RW)
The MANC register can be written by the MC and is not accessible to the host for writing.
Field Bit(s) Initial Value Description
METF 15:0 0x0 EtherType value to be compared against the L2 EtherType field in the Rx packet.
Reserved 29:16 0x0
Reserved.
Write 0x0, ignore on read.
Polarity 30 0b
0b = Positive filter - forward packets matching this filter to the manageability block.
1b = Negative filter - block packets matching this filter from the manageability block.
Reserved 31 0b
Reserved.
Write 0b, ignore on read.
Field Bit(s) Initial Value Description
Flow Control Discard 0 0b
0b = Apply filtering rules to packets with Flow Control EtherType.
1b = Discard packets with Flow Control EtherType.
Note: Flow Control EtherType is 0x8808.
NCSI Discard 1 0b
0b = Apply filtering rules to packets with NC-SI EtherType.
1b = Discard packets with NC-SI EtherType.
Note: NC-SI EtherType is 0x88F8.
Reserved 13:2 0x0
Reserved.
Write 0x0, ignore on read.
FW_RESET (R/W1C) 14 0b
Firmware Reset Occurred.
Set to 1b on a TCO firmware reset.
Cleared by write 1b.
TCO_Isolate (RO) 15 0b
Set to 1b on a TCO Isolate command. When the TCO_Isolate bit is set. Host
write cycles are completed successfully on the PCIe but silently ignored by
internal logic.
Note that when firmware initiates the TCO Isolate command it also initiates a
firmware interrupt via the ICR.MNG bit to the host and writes a value of 0x22 to
theFWSM.Ext_Err_Ind field.
This bit is RO and mirrors the value of the Isolate bit in the internal
management registers.
TCO_RESET
(R/W1C) 16 0b
TCO Reset Occurred.
Set to 1b on a TCO reset, to reset LAN port by the MC.
Cleared by write 1b.
RCV_TCO_EN
17 0b
1
TCO Receive Traffic Enabled.
When this bit is set, receive traffic to manageability is enabled.
This bit should be set only if either the MANC.EN_BMC2OS or
MANC.EN_BMC2NET bits are set.