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39 Alteon Networks Tigon I and Tigon II gigabit ethernet driver
45 driver provides support for PCI gigabit ethernet adapters based on
46 the Alteon Networks Tigon gigabit ethernet controller chip. The Tigon
47 contains an embedded R4000 CPU, gigabit MAC, dual DMA channels and
48 a PCI interface unit. The Tigon II contains two R4000 CPUs and other
49 refinements. Either chip can be used in either a 32-bit or 64-bit PCI
50 slot. Communication with the chip is achieved via PCI shared memory
51 and bus master DMA. The Tigon I and II support hardware multicast
52 address filtering, VLAN tag extraction and insertion, and jumbo
53 ethernet frames sizes up to 9000 bytes. Note that the Tigon I chipset
54 is no longer in active production: all new adapters should come equipped
55 with Tigon II chipsets.
57 There are several PCI boards available from both Alteon and other
58 vendors that use the Tigon chipset under OEM contract. The
60 driver has been tested with the following Tigon-based adapters:
61 .Bl -bullet -offset indent
63 The Alteon AceNIC V gigabit ethernet adapter
65 The 3Com 3c985-SX gigabit ethernet adapter
67 The Netgear GA620 gigabit ethernet adapter
70 The following should also be supported but have not yet been tested:
71 .Bl -bullet -offset indent
73 The Digital EtherWORKS 1000SX PCI Gigabit Adapter
75 Silicon Graphics PCI gigabit ethernet adapter
78 While the Tigon chipset supports 10, 100 and 1000Mbps speeds, support for
79 10 and 100Mbps speeds is only available on boards with the proper
80 transceivers. Most adapters are only designed to work at 1000Mbps,
81 however the driver should support those NICs that work at lower speeds
84 Support for jumbo frames is provided via the interface MTU setting.
85 Selecting an MTU larger than 1500 bytes with the
87 utility configures the adapter to receive and transmit jumbo frames.
88 Using jumbo frames can greatly improve performance for certain tasks,
89 such as file transfers and data streaming.
91 Support for vlans is also available using the
95 man page for more details.
99 driver supports the following media types:
101 .Bl -tag -width xxxxxxxxxxxxxxxxxxxx
103 Enable autoselection of the media type and options.
104 The user can manually override
105 the autoselected mode by adding media options to the
109 Set 10Mbps operation. The
111 option can also be used to select either
114 .Ar half-duplex modes.
116 Set 100Mbps (fast ethernet) operation. The
118 option can also be used to select either
124 Set 1000Mbps (gigabit ethernet) operation. Only full
126 mode is supported at this speed.
131 driver supports the following media options:
133 .Bl -tag -width xxxxxxxxxxxxxxxxxxxx
135 Force full duplex operation
137 Force half duplex operation.
140 For more information on configuring this device, see
144 .It "ti%d: couldn't map memory"
145 A fatal initialization error has occurred.
146 .It "ti%d: couldn't map interrupt"
147 A fatal initialization error has occurred.
148 .It "ti%d: no memory for softc struct!"
149 The driver failed to allocate memory for per-device instance information
150 during initialization.
151 .It "ti%d: failed to enable memory mapping!"
152 The driver failed to initialize PCI shared memory mapping. This might
153 happen if the card is not in a bus-master slot.
154 .It "ti%d: no memory for jumbo buffers!"
155 The driver failed to allocate memory for jumbo frames during
157 .It "ti%d: bios thinks we're in a 64 bit slot, but we aren't"
158 The BIOS has programmed the NIC as though it had been installed in
159 a 64-bit PCI slot, but in fact the NIC is in a 32-bit slot. This happens
160 as a result of a bug in some BIOSes. This can be worked around on the
161 Tigon II, but on the Tigon I initialization will fail.
162 .It "ti%d: board self-diagnostics failed!"
163 The ROMFAIL bit in the CPU state register was set after system
164 startup, indicating that the on-board NIC diagnostics failed.
165 .It "ti%d: unknown hwrev"
166 The driver detected a board with an unsupported hardware revision. The
168 driver supports revision 4 (Tigon 1) and revision 6 (Tigon 2) chips
169 and has firmware only for those devices.
170 .It "ti%d: watchdog timeout"
171 The device has stopped responding to the network, or there is a problem with
172 the network connection (cable).
180 .%T Alteon Gigabit Ethernet/PCI NIC manuals
181 .%O http://www.alteon.com/support/openkits
186 device driver first appeared in
191 driver was written by
192 .An Bill Paul Aq wpaul@ctr.columbia.edu .