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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
     options TI_PRIVATE_JUMBOS
     options TI_JUMBO_HDRSPLIT

     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.

     Header splitting support for Tigon	2 boards (this option has no effect
     for the Tigon 1) can be turned on with the	TI_JUMBO_HDRSPLIT option.  See
     zero_copy(9) for more discussion on zero copy receive and header split-

     The ti driver normally uses jumbo receive buffers allocated by the
     jumbo(9) buffer allocator,	but can	be configured to use its own private
     pool of jumbo buffers that	are contiguous instead of buffers from the
     jumbo allocator, which are	made up	of multiple page sized chunks.	To
     turn on private jumbos, use the TI_PRIVATE_JUMBOS option.

     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).

     In	addition to the	standard socket(2) ioctl(2) calls implemented by most
     network drivers, the ti driver also includes a character device interface
     that can be used for additional diagnostics, configuration	and debugging.
     With this character device	interface, and a specially patched version of
     gdb(1), the user can debug	firmware running on the	Tigon board.

     These ioctls and their arguments are defined in the <sys/tiio.h> header

     TIIOCGETSTATS     Return card statistics DMAed from the card into kernel
		       memory approximately every 2 seconds.  (That time
		       interval	can be changed via the TIIOCSETPARAMS ioctl.)
		       The argument is struct ti_stats.

     TIIOCGETPARAMS    Get various performance-related firmware	parameters
		       that largely affect how interrupts are coalesced.  The
		       argument	is struct ti_params.

     TIIOCSETPARAMS    Set various performance-related firmware	parameters
		       that largely affect how interrupts are coalesced.  The
		       argument	is struct ti_params.

     TIIOCSETTRACE     Tell the	NIC to trace the requested types of informa-
		       tion.  The argument is ti_trace_type.

     TIIOCGETTRACE     Dump the	trace buffer from the card.  The argument is
		       struct ti_trace_buf.

     ALT_ATTACH	       This ioctl is used for compatibility with Alteon's
		       Solaris driver.	They apparently	only have one charac-
		       ter interface for debugging, so they have to tell it
		       which Tigon instance they want to debug.	 This ioctl is
		       a noop for FreeBSD.

     ALT_READ_TG_MEM   Read the	requested memory region	from the Tigon board.
		       The argument is struct tg_mem.

     ALT_WRITE_TG_MEM  Write to	the requested memory region on the Tigon
		       board.  The argument is struct tg_mem.

     ALT_READ_TG_REG   Read the	requested register on the Tigon	board.	The
		       argument	is struct tg_reg.

     ALT_WRITE_TG_REG  Write to	the requested register on the Tigon board.
		       The argument is struct tg_reg.

     /dev/ti[0-255]  Tigon driver character interface.

     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), jumbo(9),

     Alteon Gigabit Ethernet/PCI NIC manuals,

     The ti device driver first	appeared in FreeBSD 3.0.

     The ti driver was written by Bill Paul <>.  The header
     splitting firmware	modifications, character ioctl(2) interface and	debug-
     ging support were written by Kenneth Merry	<>.  Initial
     zero copy support was written by Andrew Gallatin <>.

FreeBSD	11.1			 June 26, 2002			  FreeBSD 11.1


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