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TI(4)                  FreeBSD Kernel Interfaces Manual                  TI(4)

     ti -- Alteon Networks Tigon I and Tigon II gigabit ethernet driver

     device ti

     The ti driver provides support for PCI gigabit ethernet adapters based on
     the Alteon Networks Tigon gigabit ethernet controller chip.  The Tigon
     contains an embedded R4000 CPU, gigabit MAC, dual DMA channels and a PCI
     interface unit.  The Tigon II contains two R4000 CPUs and other refine-
     ments.  Either chip can be used in either a 32-bit or 64-bit PCI slot.
     Communication with the chip is achieved via PCI shared memory and bus
     master DMA.  The Tigon I and II support hardware multicast address fil-
     tering, VLAN tag extraction and insertion, and jumbo ethernet frames
     sizes up to 9000 bytes.  Note that the Tigon I chipset is no longer in
     active production: all new adapters should come equipped with Tigon II

     There are several PCI boards available from both Alteon and other vendors
     that use the Tigon chipset under OEM contract.  The ti driver has been
     tested with the following Tigon-based adapters:

           +o   3Com 3c985-SX Gigabit Ethernet adapter (Tigon 1)
           +o   3Com 3c985B-SX Gigabit Ethernet adapter (Tigon 2)
           +o   Alteon AceNIC V Gigabit Ethernet adapter (1000baseSX)
           +o   Alteon AceNIC V Gigabit Ethernet adapter (1000baseT)
           +o   Netgear GA620 Gigabit Ethernet adapter (1000baseSX)
           +o   Netgear GA620T Gigabit Ethernet adapter (1000baseT)

     The following should also be supported but have not yet been tested:

           +o   Asante GigaNIX1000T Gigabit Ethernet adapter
           +o   Asante PCI 1000BASE-SX Gigabit Ethernet adapter
           +o   Digital EtherWORKS 1000SX PCI Gigabit adapter
           +o   Farallon PN9000SX Gigabit Ethernet adapter
           +o   NEC Gigabit Ethernet
           +o   Silicon Graphics PCI Gigabit Ethernet adapter

     While the Tigon chipset supports 10, 100 and 1000Mbps speeds, support for
     10 and 100Mbps speeds is only available on boards with the proper trans-
     ceivers.  Most adapters are only designed to work at 1000Mbps, however
     the driver should support those NICs that work at lower speeds as well.

     Support for jumbo frames is provided via the interface MTU setting.
     Selecting an MTU larger than 1500 bytes with the ifconfig(8) utility con-
     figures the adapter to receive and transmit jumbo frames.  Using jumbo
     frames can greatly improve performance for certain tasks, such as file
     transfers and data streaming.

     Support for vlans is also available using the vlan(4) mechanism.  See the
     vlan(4) man page for more details.

     The ti 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 the /etc/rc.conf

     10baseT/UTP           Set 10Mbps operation.  The mediaopt option can also
                           be used to select either full-duplex or half-duplex

     100baseTX             Set 100Mbps (fast ethernet) operation.  The
                           mediaopt option can also be used to select either
                           full-duplex or half-duplex modes.

     1000baseSX            Set 1000Mbps (gigabit ethernet) operation.  Only
                           full full-duplex mode is supported at this speed.

     The ti 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).

     ti%d: couldn't map memory  A fatal initialization error has occurred.

     ti%d: couldn't map interrupt  A fatal initialization error has occurred.

     ti%d: no memory for softc struct!  The driver failed to allocate memory
     for per-device instance information during initialization.

     ti%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.

     ti%d: no memory for jumbo buffers!  The driver failed to allocate memory
     for jumbo frames during initialization.

     ti%d: bios thinks we're in a 64 bit slot, but we aren't  The BIOS has
     programmed the NIC as though it had been installed in a 64-bit PCI slot,
     but in fact the NIC is in a 32-bit slot.  This happens as a result of a
     bug in some BIOSes.  This can be worked around on the Tigon II, but on
     the Tigon I initialization will fail.

     ti%d: board self-diagnostics failed!  The ROMFAIL bit in the CPU state
     register was set after system startup, indicating that the on-board NIC
     diagnostics failed.

     ti%d: unknown hwrev  The driver detected a board with an unsupported
     hardware revision.  The ti driver supports revision 4 (Tigon 1) and revi-
     sion 6 (Tigon 2) chips and has firmware only for those devices.

     ti%d: watchdog timeout  The device has stopped responding to the network,
     or there is a problem with the network connection (cable).

     arp(4), netintro(4), ng_ether(4), vlan(4), ifconfig(8)

     Alteon Gigabit Ethernet/PCI NIC manuals,

     The ti device driver first appeared in FreeBSD 3.0.

     The ti driver was written by Bill Paul <>.

FreeBSD 4.10                     March 4, 1999                    FreeBSD 4.10


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