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

     ste - Sundance Technologies ST201 Fast Ethernet device driver

     device ste* at pci? dev ? function ?

     The ste driver provides support for PCI Ethernet adapters and embedded
     controllers based on the Sundance Technologies ST201 PCI fast Ethernet
     controller chip. This includes the D-Link DFE-550TX.

     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 perfect filter en-
     try 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 autoselected
                           mode by adding media options to the hostname.if(5)

     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.

     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 ifconfig(8).

     ste%d: couldn't map ports/memory  A fatal initialization error has oc-

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

     ste%d: watchdog timeout  The device has stopped responding to the net-
     work, or there is a problem with the network connection (cable).

     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 collapsing an mbuf
     chain into a cluster.

     ste%d: chip is in D3 power state -- setting to D0  This message applies
     only to adapters which support power management. Some operating 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 configuring 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 won't 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 operational 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 second warm boot to have
     the device properly configured.

     Note that this condition only occurs when warm booting from another oper-
     ating system. If you power down your system prior to booting OpenBSD, the
     card should be configured correctly.

     arp(4), netintro(4), ifconfig(8)

     Sundance ST201 data sheet,

     The ste device driver first appeared in FreeBSD 3.0. OpenBSD support was
     added in OpenBSD 2.7.

     The ste driver was written by Bill Paul <> and port-
     ed to OpenBSD by Aaron Campbell <>.

OpenBSD 2.7                     August 21, 1999                              2