NAME
ti —
Alteon Networks Tigon I and Tigon II
gigabit ethernet driver
SYNOPSIS
device ti
DESCRIPTION
Theti 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:
- The Alteon AceNIC V gigabit ethernet adapter (1000baseSX)
- The Alteon AceNIC V gigabit ethernet adapter (1000baseT)
- The 3Com 3c985-SX gigabit ethernet adapter (Tigon 1)
- The 3Com 3c985B-SX gigabit ethernet adapter (Tigon 2)
- The Netgear GA620 gigabit ethernet adapter (1000baseSX)
- The Netgear GA620T gigabit ethernet adapter (1000baseT)
The following should also be supported but have not yet been tested:
- The Digital EtherWORKS 1000SX PCI Gigabit Adapter
- Silicon Graphics PCI gigabit ethernet adapter
- 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.
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 file.
- 10baseT/UTP
- 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) 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).
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
tidriver 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
arp(4), ifmedia(4), netintro(4), ng_ether(4), vlan(4), ifconfig(8)
Alteon Gigabit Ethernet/PCI NIC manuals, http://sanjose.alteon.com/open.shtml.
HISTORY
The ti device driver first appeared in
FreeBSD 3.0.
AUTHORS
The ti driver was written by
Bill Paul
<wpaul@bsdi.com>.