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NGE(4)		       FreeBSD Kernel Interfaces Manual			NGE(4)

NAME
     nge -- National Semiconductor PCI gigabit ethernet	adapter	driver

SYNOPSIS
     device miibus
     device nge

DESCRIPTION
     The nge driver provides support for various NICs based on the National
     Semiconductor DP83820 and DP83821 gigabit ethernet	controller chips,
     including the following:

     +o	 SMC EZ	Card 1000 (SMC9462TX)
     +o	 D-Link	DGE-500T
     +o	 Asante	FriendlyNet GigaNIX 1000TA and 1000TPC
     +o	 Addtron AEG320T
     +o	 LinkSys EG1032	(32-bit	PCI) and EG1064	(64-bit	PCI)
     +o	 Surecom Technology EP-320G-TX
     +o	 Netgear GA621
     +o	 Netgear GA622T

     All of these NICs are capable of 10, 100 and 1000mbps speeds over CAT5
     copper cable.  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 tagging/insertion as well as a 2048-bit multicast hash filter	and up
     to	4 pattern match	buffers.

     Most cards	also use the DP83861 10/100/1000 copper	gigabit	tranceiver
     chip, which supports autonegotiation of 10, 100 and 1000mbps modes	in
     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 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 options.  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 ifconfig(8)
		  mediaopt option can also be used to select either
		  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 settings will be
	    chosen automatically.  However when	manually selecting the link
	    state, it is necessary to force one	side of	the link to be a mas-
	    ter	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 instead.

     For more information on configuring this device, see ifconfig(8).

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 allocate 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 net-
     work, or there is a problem with the network connection (cable).

SEE ALSO
     arp(4), netintro(4), ng_ether(4), vlan(4),	ifconfig(8)

     National Semiconductor DP83820 datasheet, http://www.national.com.

     National Semiconductor DP83861 datasheet, http://www.national.com.

HISTORY
     The nge device driver first appeared in FreeBSD 4.4.

AUTHORS
     The nge driver was	written	by Bill	Paul <wpaul@bsdi.com>.

FreeBSD	10.1			 May 11, 2001			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | DIAGNOSTICS | SEE ALSO | HISTORY | AUTHORS

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