ste(4)

NAME

ste - Sundance Technologies ST201 Fast Ethernet device driv

er

SYNOPSIS

To  compile this driver into the kernel, place the following
lines in your
kernel configuration file:
      device miibus
      device ste
Alternatively, to load the driver as a module at boot  time,
place the
following line in loader.conf(5):
      if_ste_load="YES"

DESCRIPTION

The ste driver provides support for PCI Ethernet adapters

and embedded
controllers based on the Sundance Technologies ST201 PCI

Fast Ethernet
controller chip.

The Sundance ST201 uses bus master DMA and is designed to be

a 3Com
Etherlink XL workalike. It uses the same DMA descriptor

structure and is
very similar in operation, however its register layout is

different. The
ST201 has a 64-bit multicast hash filter and a single per

fect filter
entry for the station address. It supports both 10 and

100Mbps speeds in
either full or half duplex using an MII transceiver.

The ste driver supports the following media types:

autoselect Enable autoselection of the media type

and options.

The user can manually override the au

toselected
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.

The ste 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 ifcon

fig(8).

HARDWARE

The ste driver supports Sundance Technologies ST201 based

Fast Ethernet
adapters and embedded controllers including:

+o D-Link DFE-530TXS
+o D-Link DFE-550TX
+o D-Link DFE-580TX

DIAGNOSTICS

ste%d: couldn't map ports/memory A fatal initialization er

ror has
occurred.

ste%d: couldn't map interrupt A fatal initialization error

has occurred.

ste%d: watchdog timeout The device has stopped responding

to the network, or there is a problem with the network connection (ca

ble).

ste%d: no memory for rx list The driver failed to allocate

an mbuf for
the receiver ring.

ste%d: no memory for tx list The driver failed to allocate

an mbuf for
the transmitter ring when allocating a pad buffer or col

lapsing an mbuf
chain into a cluster.

ste%d: chip is in D3 power state -- setting to D0 This mes

sage applies
only to adapters which support power management. Some oper

ating systems
place the controller in low power mode when shutting down,

and some PCI
BIOSes fail to bring the chip out of this state before con

figuring it.
The controller loses all of its PCI configuration in the D3

state, so if
the BIOS does not set it back to full power mode in time, it

will not be
able to configure it correctly. The driver tries to detect

this condition and bring the adapter back to the D0 (full power)

state, but this
may not be enough to return the driver to a fully opera

tional condition.
If you see this message at boot time and the driver fails to

attach the
device as a network interface, you will have to perform a

second warm
boot to have the device properly configured.

Note that this condition only occurs when warm booting from

another operating system. If you power down your system prior to boot

ing FreeBSD,
the card should be configured correctly.

SEE ALSO

arp(4), miibus(4), netintro(4), ng_ether(4), polling(4), if

config(8)

Sundance ST201 data sheet, http://www.sundanceti.com.

HISTORY

The ste device driver first appeared in FreeBSD 3.0.

AUTHORS

The ste driver was written by Bill Paul

<wpaul@ee.columbia.edu>.

BSD July 16, 2005

BSD