CAS(4)

NAME
cas - Sun Cassini 10/100/Gigabit Ethernet device

SYNOPSIS
cas* at pci?
brgphy* at mii?
gentbi* at mii?
nsgphy* at mii?

DESCRIPTION
The cas driver provides support for various NICs based on the Sun Cassini/Cassini+ and National Semiconductor Saturn Ethernet controller chips, including the following:

•   Sun GigaSwift Ethernet Adapter (10/100/1000baseT)
•   Sun GigaSwift Ethernet MMF Adapter (1000baseSX)
•   Sun Quad GigaSwift Ethernet UTP Adapter (10/100/1000baseT)
•   Sun Quad GigaSwift PCI-X Adapter (10/100/1000baseT)
•   Sun Dual Gigabit Ethernet and Dual SCSI/P Adapter (10/100/1000baseT)

It uses an internal or external PHY or an external 10-bit interface.

The cas driver supports several media types, which are selected via the ifconfig(8) command. The supported media types are:

media autoselect
    Attempt to autoselect the media type (default)

media 1000baseT mediaopt full-duplex
    Use 1000baseT on copper, full duplex

media 1000baseT [mediaopt half-duplex]
    Use 1000baseT on copper, half duplex

media 1000baseSX mediaopt full-duplex
    Use 1000baseSX on fiber, full duplex

media 1000baseSX [mediaopt half-duplex]
    Use 1000baseSX on fiber, half duplex

media 100baseTX mediaopt full-duplex
    Use 100baseTX, full duplex

media 100baseTX [mediaopt half-duplex]
    Use 100baseTX, half duplex

media 10baseT mediaopt full-duplex
    Use 10baseT, full duplex

media 10baseT [mediaopt half-duplex]
    Use 10baseT, half duplex

SEE ALSO
arp(4), brgphy(4), gentbi(4), ifmedia(4), inet(4), intro(4), netintro(4), nsgphy(4), hostname.if(5), ifconfig(8)

HISTORY
OpenBSD support for cas first appeared in OpenBSD 4.1.

AUTHORS
The cas driver was written by Mark Kettenis <kettenis@openbsd.org> based on the gem(4) driver.

BUGS
The cas driver does not yet use many of the advanced features the Cassini chip offers.