82598EB Datasheet, PDF (77/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - PCIe
0x30
0x34
0x38
0x3C
Max_Latency (0x00)
Expansion ROM Base Address
Reserved
Reserved
Min_Grant
(0xff)
Interrupt Pin
(0x01 or 0x02)
Cap_Ptr
Interrupt Line
(0x00)
Many of the fields of the PCIe header space contain hardware default values that are either fixed or can
be overridden using an EEPROM, but might not be independently specified for each logical LAN device.
The fields listed in the table below are common to both LAN devices.
Table 3-10. Fields Common to LAN 0, LAN 1
Vendor ID
Revision
Header Type
Subsystem ID
Subsystem Vendor ID
Class Code,
Cap_Ptr,
Max Latency,
Min Grant
The Vendor ID of the 82598 is specified to a single value of 0x8086. The value is reflected
identically for both LAN devices.
The revision number of the 82598 is reflected identically for both LAN devices.
This field indicates if a device is single function or multifunction. The value reflected in this
field is reflected identically for both LAN devices, but the actual value reflected depends on
LAN disable configuration.
When both the 82598 LAN ports are enabled, both PCIe headers return 0x80 in this field,
acknowledging being part of a multi-function device. LAN 0 exists as device function 0,
while LAN 1 exists as device function 1.
If function 1 is disabled, then only a single-function device is indicated (this field returns a
value of 0x00) and the LAN exists as device function 0.
The subsystem ID of the 82598 can be specified via an EEPROM, but only a single value can
be specified. The value is reflected identically for both LAN devices.
The subsystem Vendor ID of the 82598 can be specified via an EEPROM, but only a single
value can be specified. The value is reflected identically for both LAN devices.
These fields reflect fixed values that are constant values reflected for both LAN devices.
The following fields are implemented uniquely for each LAN device.
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