To compile this driver into the kernel,
place the following lines in your
kernel configuration file:
device miibusdevice vge
Alternatively, to load the driver as a
module at boot time, place the following line in
loader.conf5:
if_vge_load="YES"
DESCRIPTION
The
driver provides support for various NICs and embedded Ethernet interfaces
based on the VIA Networking Technologies VT6122 Gigabit Ethernet
controller chips.
The VT6122 is a 33/66Mhz 64-bit PCI device which combines a tri-speed MAC with
an integrated 10/100/1000 copper PHY.
(Some older cards use an external PHY.)
The MAC supports TCP/IP hardware
checksums (IPv4 only), TCP large send, VLAN tag insertion and stripping,
as well as VLAN filtering, a 64-entry CAM filter and a 64-entry VLAN filter,
64-bit multicast hash filter, 4 separate transmit DMA queues, flow control
and jumbo frames up to 16K in size.
The VT6122 has a 16K receive FIFO and 48K transmit FIFO.
The
driver takes advantage of the VT6122's checksum offload and VLAN
tagging features, as well as the jumbo frame and CAM filter support.
The CAM filter is used for multicast address filtering to provide
64 perfect multicast address filter support.
If it is necessary for the interface to join more than 64 multicast
groups, the driver will switch over to using the hash filter.
The jumbo frame support can be enabled by setting the interface MTU
to any value larger than the default of 1500 bytes, up to a maximum
of 9000 bytes.
The receive and transmit checksum offload support
can be toggled on and off using the
ifconfig(8)
utility.
The
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.conf5.
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
ifconfig(8)
mediaopt
option can also be used to select either
full-duplex
or
half-duplex
modes.
The
driver supports the following media options:
full-duplex
Force full duplex operation.
half-duplex
Force half duplex operation.
The
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 master and the other a slave.
The
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
driver supports VIA Networking VT3119 and VT6122 based
Gigabit Ethernet adapters including:
VIA Networking LAN-on-motherboard Gigabit Ethernet
ZyXEL GN650-T 64-bit PCI Gigabit Ethernet NIC (ZX1701)
ZyXEL GN670-T 32-bit PCI Gigabit Ethernet NIC (ZX1702)
DIAGNOSTICS
"vge%d: couldn't map memory"
A fatal initialization error has occurred.
"vge%d: couldn't map ports"
A fatal initialization error has occurred.
"vge%d: couldn't map interrupt"
A fatal initialization error has occurred.
"vge%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.
"vge%d: watchdog timeout"
The device has stopped responding to the network, or there is a problem with
the network connection (cable).
