nge(4)
NAME
- nge - National Semiconductor PCI Gigabit Ethernet adapter
- driver
SYNOPSIS
To compile support for the
nge driver into your kernel, place the following lines in
your kernel
configuration file:
device miibus
device nge
Alternatively, to load the
nge driver at boot time, place the following line in loader.conf(5):
if_nge_load="YES"
DESCRIPTION
- The nge driver provides support for various NICs based on
- the National
Semiconductor DP83820 and DP83821 Gigabit Ethernet con - troller chips.
- The DP83820 supports TBI (ten bit interface) and GMII
- transceivers, which
means it can be used with either copper or 1000baseX fiber - applications.
The DP83820 supports TCP/IP checksum offload and VLAN tag - ging/insertion
as well as a 2048-bit multicast hash filter and up to 4 pat - tern match
buffers. - Most cards also use the DP83861 10/100/1000 copper gigabit
- transceiver
chip, which supports autonegotiation of 10, 100 and 1000Mbps - modes in
full or half duplex. - The DP83820 also supports jumbo frames, which can be config
- ured via the
interface MTU setting. Selecting an MTU larger than 1500 - bytes with the
ifconfig(8) utility configures the adapter to receive and - transmit jumbo
frames. Using jumbo frames can greatly improve performance - for certain
tasks, such as file transfers and data streaming. - The nge driver supports the following media types:
- autoselect Enable autoselection of the media type and op
- tions. The
- user can manually override the autoselected
- mode by adding
media options to rc.conf(5). - 10baseT/UTP Set 10Mbps operation. The ifconfig(8) mediaopt
- option can
- also be used to select either full-duplex or
- half-duplex
modes. - 100baseTX Set 100Mbps (Fast Ethernet) operation. The if
- config(8)
- mediaopt option can also be used to select ei
- ther
full-duplex or half-duplex modes. - 1000baseTX Set 1000baseTX operation over twisted pair.
- full-duplex and
- half-duplex modes are supported.
- 1000baseSX Set 1000Mbps (Gigabit Ethernet) operation.
- Both full-duplex
- and half-duplex modes are supported.
- The nge driver supports the following media options:
- full-duplex Force full duplex operation.
- half-duplex Force half duplex operation.
- The nge driver also supports one special link option for
- 1000baseTX
cards: - link0 With 1000baseTX cards, establishing a link between
- two ports
- requires that one port be configured as a master and
- the other a
slave. With autonegotiation, the master/slave set - tings will be
chosen automatically. However when manually select - ing the link
state, it is necessary to force one side of the link - to be a master and the other a slave. The nge driver configures
- the ports as
slaves by default. Setting the link0 flag with if - config(8) will
set a port as a master instead. - For more information on configuring this device, see ifcon
- fig(8).
HARDWARE
- The nge driver supports National Semiconductor DP83820 and
- DP83821 based
Gigabit Ethernet adapters including: - +o Addtron AEG320T
+o Ark PC SOHO-GA2500T (32-bit PCI) and SOHO-GA2000T - (64-bit PCI)
+o Asante FriendlyNet GigaNIX 1000TA and 1000TPC
+o D-Link DGE-500T
+o LinkSys EG1032 (32-bit PCI) and EG1064 (64-bit PCI)
+o Netgear GA621
+o Netgear GA622T
+o SMC EZ Card 1000 (SMC9462TX)
+o Surecom Technology EP-320G-TX
+o Trendware TEG-PCITX (32-bit PCI) and TEG-PCITX2 (64-bit - PCI)
DIAGNOSTICS
- nge%d: couldn't map memory A fatal initialization error has
- occurred.
- nge%d: couldn't map ports A fatal initialization error has
- occurred.
- nge%d: couldn't map interrupt A fatal initialization error
- has occurred.
- nge%d: no memory for softc struct! The driver failed to al
- locate memory
for per-device instance information during initialization. - nge%d: failed to enable memory mapping! The driver failed
- to initialize
PCI shared memory mapping. This might happen if the card is - not in a
bus-master slot. - nge%d: no memory for jumbo buffers! The driver failed to
- allocate memory
for jumbo frames during initialization. - nge%d: watchdog timeout The device has stopped responding
- to the network, or there is a problem with the network connection (ca
- ble).
SEE ALSO
- arp(4), miibus(4), netintro(4), ng_ether(4), polling(4),
- vlan(4),
ifconfig(8) - National Semiconductor DP83820 datasheet, http://www.nation
- al.com.
- National Semiconductor DP83861 datasheet, http://www.nation
- al.com.
HISTORY
The nge device driver first appeared in FreeBSD 4.4.
AUTHORS
- The nge driver was written by Bill Paul <wpaul@bsdi.com>.
- BSD July 16, 2005