NAME

cas — Sun Cassini 10/100/1Gb 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

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.