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
features, 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
Sundance/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.
The stge driver also supports one special link option for 1000baseTX
cards:
link0 With 1000baseTX cards, establishing a link between two ports
requires that one port is configured as master and the other one
as 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
master and the other a slave. The stge 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).
HARDWARE
The stge driver provides support for various NICs based on the
Sundance/Tamarack TC9021 based Gigabit Ethernet controller chips,
including:
· Antares Microsystems Gigabit Ethernet
· ASUS NX1101 Gigabit Ethernet
· D-Link DL-4000 Gigabit Ethernet
· IC Plus IP1000A Gigabit Ethernet
· Sundance ST-2021 Gigabit Ethernet
· Sundance ST-2023 Gigabit Ethernet
· Sundance TC9021 Gigabit Ethernet
· 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〉.