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SIS(4)			     Kernel Interfaces Manual			  SIS(4)

NAME
     sis -- SiS 900, SiS 7016 and NS DP83815 Fast Ethernet device driver

SYNOPSIS
     To compile this driver into the kernel, place the following lines in your
     kernel configuration file:

	   device miibus
	   device sis

     Alternatively, to load the driver as a module at boot time, place the
     following line in loader.conf(5):

	   if_sis_load="YES"

DESCRIPTION
     The sis driver provides support for PCI Ethernet adapters and embedded con-
     trollers  based on the Silicon Integrated Systems SiS 900 and SiS 7016 Fast
     Ethernet controller chips.

     This driver also supports adapters  based	on  the  National  Semiconductor
     DP83815 (MacPhyter) PCI Ethernet controller chip.

     The  SiS  900  is a 100Mbps Ethernet MAC and MII-compliant transceiver in a
     single package.  It uses a bus master DMA and a  scatter/gather  descriptor
     scheme.   The  SiS 7016 is similar to the SiS 900 except that it has no in-
     ternal PHY, requiring instead an external transceiver to be attached to its
     MII interface.  The SiS 900 and SiS 7016 both have a 128-bit multicast hash
     filter and a single perfect filter entry for the station address.

     The NS DP83815 is also a 100Mbps Ethernet MAC  with  integrated  PHY.   The
     NatSemi  chip  and the SiS 900 share many of the same features and a fairly
     similar programming interface, hence both chips are supported by  the  same
     driver.

     The sis 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 rc.conf(5).

     10baseT/UTP  Set  10Mbps  operation.   The  ifconfig(8) mediaopt option can
		  also be used to select either `full-duplex'  or  `half-duplex'
		  modes.

     100baseTX	  Set	100Mbps  (Fast	Ethernet)  operation.	The  ifconfig(8)
		  mediaopt  option  can  also	be   used   to	 select   either
		  `full-duplex' or `half-duplex' modes.

     The sis 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).

HARDWARE
     The  sis  driver  supports  Silicon Integrated Systems SiS 900 and SiS 7016
     based Fast Ethernet adapters and embedded controllers, as well as Fast Eth-
     ernet adapters based on  the  National  Semiconductor  DP83815  (MacPhyter)
     chip.  Supported adapters include:

     *	 @Nifty FNECHARD IFC USUP-TX
     *	 MELCO LGY-PCI-TXC
     *	 Netgear FA311-TX (DP83815)
     *	 Netgear FA312-TX (DP83815)
     *	 SiS 630, 635, and 735 motherboard chipsets

DIAGNOSTICS
     sis%d:  couldn't  map  ports/memory    A fatal initialization error has oc-
     curred.

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

     sis%d: watchdog timeout  The device has stopped responding to the	network,
     or there is a problem with the network connection (e.g. a cable fault).

     sis%d: no memory for rx list  The driver failed to allocate an mbuf for the
     receiver ring.

     sis%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.

     sis%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 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 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 a warm boot to have the device
     properly configured.

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

SEE ALSO
     arp(4), miibus(4), netintro(4), ng_ether(4), polling(4), ifconfig(8)

     SiS 900 and SiS 7016 datasheets, http://www.sis.com.tw.

     NatSemi DP83815 datasheet, http://www.national.com.

HISTORY
     The sis device driver first appeared in FreeBSD 3.0.

AUTHORS
     The sis driver was written by Bill Paul <wpaul@ee.columbia.edu>.

FreeBSD 6.1			  July 16, 2005 			  SIS(4)
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