Filter
Top Products
Technical Reference Guide
5.9.4 NIC PROGRAMMING
Programming the NIC consists of configuration, which occurs during POST, and control, which
occurs at runtime.
5.9.4.1 Configuration
The network interface function is a PCI device and configured though PCI configuration space
registers using PCI protocol described in chapter 4. The PCI configuration registers are listed in
the following table:
Table 5–25. NIC Controller PCI Configuration Registers
Table 5-25.
NIC Controller PCI Configuration Registers (ICH Device 8/Function 0)
PCI
Conf.
Addr.
Register
Value on
Reset
PCI
Conf.
Addr.
Register
Value
on
Reset
00-01h Vender ID 8086h 2E, 2Fh Subsystem ID 0000h
02-03h Device ID [1] 34h Capabilities Pointer DCh
04-05h PCI Command 0000h 3Ch Interrupt Line 00h
06-07h PCI Status 0290h 3Dh Interrupt Pin 01h
08h Revision ID Xxh 3Eh Min. Grant 08h
09-0Bh Class Code 0002h 3E, 3Fh Max. Latency 38h
0Dh Latency Timer 00h DCh Capability ID 01h
0Eh Header Type 00h DDh Next Item Pointer 00h
10-13h Cntrl. Reg. Base Addr. (Mem) 8 DE, DFh Pwr. Mgmt. Functions FE21h
14-17h Cntrl. Reg. Base Addr. (I/O) 1 E0, E1h Pwr. Mgmt. Cntrl./Sts 0000h
2C, 2Dh Subsystem Vender ID 0000h E3h Data --
NOTE:
Assume unmarked gaps are reserved and/or not used.
[1] ICH2 = 2449h
ICH4 = 103Ah
5.9.4.2 Control
The 82562 controller is controlled though registers that may be mapped in system memory space
or variable I/O space. The registers are listed in the following table:
Table 5–26. NIC Control Registers
Table 5-26.
NIC Control Registers
Offset
Addr. / Register
No. of
Bytes
Offset
Addr. / Register
No. of
Bytes
00h SCB Status 2 19h Flow Control Register 2
02h SCB Command 2 1Bh PMDR 1
04h SCB General Pointer 4 1Ch General Control 1
08h PORT 4 1Dh General Status 1
0Ch Flash Control Reg. 2 1E-2Fh Reserved 10
0Eh EEPROM Control Reg. 2 30h Function Event Register 4
10h Mgmt. Data I/F Cntrl. Reg. 4 34h Function Event Mask Register 4
14h Rx Direct Mem. Access Byte Cnt. 4 38h Function Present State Register 4
18h Early Receive Interrupt 1 20h Force Event Register 4
Not implemented in these systems (CardBus registers).
Compaq D315 and hp d325 Personal Computers
Featuring the AMD Athlon XP Processor
Second Edition - April 2003
5-35