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STGE(4)		       FreeBSD Kernel Interfaces Manual		       STGE(4)

NAME
     stge -- Sundance/Tamarack TC9021 Gigabit Ethernet adapter driver

SYNOPSIS
     To	compile	this driver into the kernel, place the following lines in your
     kernel configuration file:

	   device miibus
	   device stge

     Alternatively, to load the	driver as a module at boot time, place the
     following line in loader.conf(5):

	   if_stge_load="YES"

DESCRIPTION
     The stge device driver provides support for various NICs based on the
     Sundance/Tamarack TC9021 Gigabit Ethernet controller chip.

     The Sundance/Tamarack TC9021 is found on the D-Link DGE-550T and the
     Antares Microsystems Gigabit Ethernet board.  It uses an external PHY or
     an	external 10-bit	interface.

     All NICs supported	by the stge driver have	TCP/UDP/IP checksum offload
     for both receive and transmit, hardware VLAN tag stripping/insertion fea-
     tures, and	receive	interrupt moderation mechanism as well as a 64-bit
     multicast hash filter.  The Sundance/Tamarack TC9021 supports TBI (ten
     bit interface) and	GMII transceivers, which means it can be used with
     either copper or 1000baseX	fiber applications.

     The Sundance/Tamarack TC9021 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.

     The stge 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.  The Sun-
		  dance/Tamarack supports 1000Mbps in autoselect mode only.

     The stge driver supports the following media options:

     full-duplex  Force	full duplex operation.

     half-duplex  Force	half duplex operation.

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

HARDWARE
     The stge driver provides support for various NICs based on	the Sun-
     dance/Tamarack TC9021 based Gigabit Ethernet controller chips, including:

     +o	 Antares Microsystems Gigabit Ethernet
     +o	 ASUS NX1101 Gigabit Ethernet
     +o	 D-Link	DL-4000	Gigabit	Ethernet
     +o	 IC Plus IP1000A Gigabit Ethernet
     +o	 Sundance ST-2021 Gigabit Ethernet
     +o	 Sundance ST-2023 Gigabit Ethernet
     +o	 Sundance TC9021 Gigabit Ethernet
     +o	 Tamarack TC9021 Gigabit Ethernet

SYSCTL VARIABLES
     The following variables are available as both sysctl(8) variables and
     loader(8) tunables:

     dev.stge.%d.rxint_nframe
	     Number of frames between RxDMAComplete interrupts.	 The accepted
	     range is 1	to 255,	default	value is 8 frames.  The	interface has
	     to	be brought down	and up again before a change takes effect.

     dev.stge.%d.rxint_dmawait
	     Maximum amount of time to wait in 1us increments before issuing
	     an	Rx interrupt if	the number of frames received is less than
	     rxint_nframe.  The	accepted range is 0 to 4194, default value is
	     30	microseconds.  The interface has to be brought down and	up
	     again before a change takes effect.

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

HISTORY
     The stge driver was ported	from NetBSD and	first appeared in FreeBSD 6.2.
     The NetBSD	version	was written by Jason R.	Thorpe <thorpej@NetBSD.org>.

AUTHORS
     The stge driver was ported	by Pyun	YongHyeon <yongari@FreeBSD.org>.

FreeBSD	10.1		       November	23, 2010		  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | SYSCTL VARIABLES | SEE ALSO | HISTORY | AUTHORS

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