nge - National Semiconductor PCI Gigabit Ethernet adapter
nge* at pci? dev ? function ?
The nge driver provides support for various NICs based on
Semiconductor DP83820 and DP83821 Gigabit Ethernet controller chips, including
+o Addtron AEG320T
+o Ark PC SOHO-GA2500T (32-bit PCI) and SOHO-GA2000T
+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
All of these NICs are capable of 10, 100 and 1000Mbps speeds
copper cable. The DP83820 supports TBI (ten bit interface)
transceivers, which means it can be used with either copper
fiber applications. The DP83820 supports ip(4), tcp(4), and
checksum offload and VLAN tagging/insertion as well as a
hash filter and up to 4 pattern match buffers.
Most cards also use the DP83861 10/100/1000 copper gigabit
chip, which supports autonegotiation of 10, 100 and 1000Mbps
full or half duplex.
The DP83820 also supports jumbo frames, which can be configured via the
interface MTU setting. Selecting an MTU larger than 1500
bytes with the
ifconfig(8) utility configures the adapter to receive and
frames. Using jumbo frames can greatly improve performance
tasks, such as file transfers and data streaming. If the
MTU is set to
be larger than the NIC's transmit buffer (typically 8152
output checksumming is disabled as the NIC cannot handle
The nge driver supports the following media types:
autoselect Enable autoselection of the media type and options. The user
can manually override the autoselected mode
by adding media
options to the appropriate hostname.if(5)
10baseT Set 10Mbps operation. The ifconfig(8) mediaopt
also be used to select either full-duplex or
100baseTX Set 100Mbps (Fast Ethernet) operation. The ifconfig(8)
mediaopt option can also be used to select either full-
duplex or half-duplex modes.
1000baseT Set 1000baseT operation over twisted pair.
half-duplex modes are supported.
1000baseSX Set 1000Mbps (Gigabit Ethernet) operation.
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
link0 With 1000baseT 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 settings
will be chosen automatically. However
selecting 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 ifconfig(8) will set a port
as a master
For more information on configuring this device, see ifconfig(8).
nge%d: couldn't map memory A fatal initialization error has
nge%d: couldn't map ports A fatal initialization error has
nge%d: couldn't map interrupt A fatal initialization error
nge%d: no memory for softc struct! The driver failed to allocate memory
for per-device instance information during initialization.
nge%d: failed to enable memory mapping! The driver failed
PCI shared memory mapping. This might happen if the card is
not in a
nge%d: no memory for jumbo buffers! The driver failed to
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 (cable).
arp(4), ifmedia(4), intro(4), netintro(4), nsgphy(4),
National Semiconductor DP83820 datasheet, http://www.nation-
National Semiconductor DP83861 datasheet, http://www.nation-
The nge device driver first appeared in OpenBSD 3.0.
The nge driver was written by Bill Paul <email@example.com>.
OpenBSD 3.6 May 11, 2001
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