NAME    [Toc]    [Back]

     ti - Alteon Networks Tigon I and II Gigabit Ethernet driver

SYNOPSIS    [Toc]    [Back]

     ti* at pci? dev ? function ?

DESCRIPTION    [Toc]    [Back]

     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 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.  The Tigon I and II support  hardware  multicast
address filtering,
  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
     chipsets.

     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   The  Alteon  AceNIC  V  Gigabit  Ethernet  adapter
(1000baseSX)
           +o    The  Alteon  AceNIC  V  Gigabit  Ethernet adapter
(1000baseT)
           +o   The 3Com 3C985-SX Gigabit Ethernet adapter  (Tigon
1)
           +o   The 3Com 3C985B-SX Gigabit Ethernet adapter (Tigon
2)
           +o    The  Netgear  GA620  Gigabit   Ethernet   adapter
(1000baseSX)
           +o     The  Netgear  GA620T  Gigabit  Ethernet  adapter
(1000baseT)

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

           +o   The Digital EtherWORKS 1000SX PCI Gigabit Adapter
           +o   Silicon Graphics PCI Gigabit Ethernet adapter
           +o   Farallon PN9000SX 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
     transceivers.   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 configures
  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 user
 can manually override the autoselected  mode
by adding media
  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).

DIAGNOSTICS    [Toc]    [Back]

     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 revision
  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    [Toc]    [Back]

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

HISTORY    [Toc]    [Back]

     The ti device driver first appeared in FreeBSD 3.0.  OpenBSD
support
     first appeared in OpenBSD 2.6.

AUTHORS    [Toc]    [Back]

     The ti driver was written by Bill Paul <[email protected]>.

OpenBSD      3.6                           March      4,     1999