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38 .Nd "VIA Networking Technologies VT6122 PCI Gigabit Ethernet adapter driver"
45 driver provides support for various NICs and embedded Ethernet interfaces
46 based on the VIA Networking Technologies VT6122 Gigabit Ethernet
49 The VT6122 is a 33/66Mhz 64-bit PCI device which combines a tri-speed MAC with
50 an integrated 10/100/1000 copper PHY. (Some older cards use an external
52 The MAC supports TCP/IP hardware
53 checksums (IPv4 only), TCP large send, VLAN tag insertion and stripping,
54 as well as VLAN filtering, a 64-entry CAM filter and a 64-entry VLAN filter,
55 64-bit multicast hash filter, 4 separate transmit DMA queues, flow control
56 and jumbo frames up to 16K in size.
57 The VT6122 has a 16K receive FIFO and 48K transmit FIFO.
61 driver takes advantage of the VT6122's checksum offload and VLAN
62 tagging features, as well as the jumbo frame and CAM filter support.
63 The CAM filter is used for multicast address filtering to provide
64 64 perfect multicast address filter support.
65 If it is necessary for the interface to join more than 64 multicast
66 groups, the driver will switch over to using the hash filter.
68 The jumbo frame support can be enabled by setting the interface MTU
69 to any value larger than the default of 1500 bytes, up to a maximum
71 The receive and transmit checksum offload support
72 can be toggled on and off using the
78 driver supports the following media types:
79 .Bl -tag -width 10baseTXUTP
81 Enable autoselection of the media type and options.
82 The user can manually override
83 the autoselected mode by adding media options to
90 option can also be used to select either
96 Set 100Mbps (Fast Ethernet) operation.
100 option can also be used to select either
106 Set 1000baseTX operation over twisted pair.
115 driver supports the following media options:
116 .Bl -tag -width full-duplex
118 Force full duplex operation.
120 Force half duplex operation.
125 driver also supports one special link option for 1000baseTX cards:
126 .Bl -tag -width link0
128 With 1000baseTX cards, establishing a link between two ports requires
129 that one port be configured as a master and the other a slave.
130 With autonegotiation,
131 the master/slave settings will be chosen automatically.
132 However when manually selecting the link state, it is necessary to
133 force one side of the link to be a master and the other a slave.
136 driver configures the ports as slaves by default.
141 will set a port as a master instead.
144 For more information on configuring this device, see
149 driver supports VIA Networking VT3119 and VT6122 based
150 Gigabit Ethernet adapters including:
154 VIA Networking LAN-on-motherboard Gigabit Ethernet
156 ZyXEL GN650-T 64-bit PCI Gigabit Ethernet NIC (ZX1701)
158 ZyXEL GN670-T 32-bit PCI Gigabit Ethernet NIC (ZX1702)
162 .It "vge%d: couldn't map memory"
163 A fatal initialization error has occurred.
164 .It "vge%d: couldn't map ports"
165 A fatal initialization error has occurred.
166 .It "vge%d: couldn't map interrupt"
167 A fatal initialization error has occurred.
168 .It "vge%d: failed to enable memory mapping!"
169 The driver failed to initialize PCI shared memory mapping.
171 happen if the card is not in a bus-master slot.
172 .It "vge%d: watchdog timeout"
173 The device has stopped responding to the network, or there is a problem with
174 the network connection (cable).
187 device driver first appeared in
192 driver was written by
193 .An Bill Paul Aq wpaul@windriver.com .