TI(4)                     OpenBSD Programmer's Manual                    TI(4)

NAME
     ti - Alteon Networks Tigon I and II Gigabit Ethernet device

SYNOPSIS
     ti* at pci?
     ti* at sbus?

DESCRIPTION
     The ti driver provides support for Gigabit Ethernet adapters based on the
     Alteon Networks Tigon Gigabit Ethernet controller chip, including the
     following:

           o   3Com 3C985-SX Gigabit Ethernet (1000baseSX)
           o   3Com 3C985B-SX Gigabit Ethernet (1000baseSX)
           o   Alteon AceNIC V Gigabit Ethernet (1000baseSX)
           o   Alteon AceNIC V Gigabit Ethernet (1000baseT)
           o   Digital EtherWORKS 1000SX PCI Gigabit Ethernet (1000baseSX)
           o   Farallon PN9000SX Gigabit Ethernet (1000baseSX)
           o   Netgear GA620 Gigabit Ethernet (1000baseSX)
           o   Netgear GA620T Gigabit Ethernet (1000baseT)
           o   Silicon Graphics Gigabit Ethernet (1000baseSX)
           o   Silicon Graphics Gigabit Ethernet (1000baseT)
           o   Sun Vector Gigabit Ethernet (1000baseSX)

     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
     refinements.  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.  SBus cards are also available and use a special bridge
     chip.  The Tigon I and II support hardware multicast address filtering,
     VLAN tag insertion and stripping, and Jumbo frame sizes up to 9000 bytes.

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

     Support for Jumbo frames is provided via the interface MTU setting.  Se-
     lecting 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.

     The ti driver supports the following media types:

     autoselect   Enable autoselection of the media type and options.  The us-
                  er can manually override the autoselected mode by adding me-
                  dia options to the appropriate hostname.if(5) file.

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

     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) on fiber operation.  Only
                  full-duplex mode is supported at this speed.

     1000baseT    Set 1000Mbps (Gigabit Ethernet) on copper operation.

     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).

FILES
     Two firmware files are necessary, for Tigon 1 and Tigon 2 devices.  These
     are loaded on demand when the device is attached:

           /etc/firmware/tigon1
           /etc/firmware/tigon2

DIAGNOSTICS
     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).

SEE ALSO
     arp(4), ifmedia(4), intro(4), netintro(4), pci(4), sbus(4),
     hostname.if(5), ifconfig(8)

HISTORY
     The ti device driver first appeared in FreeBSD 3.0.  OpenBSD support
     first appeared in OpenBSD 2.6.  SBus support was added in OpenBSD 4.7.

AUTHORS
     The ti driver was written by Bill Paul <wpaul@bsdi.com>.  SBus support
     was added by Mark Kettenis <kettenis@openbsd.org>.

OpenBSD 4.7                    December 13, 2009                             2
