CAS(4) - Device Drivers Manual #

CAS(4) - Device Drivers Manual

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

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.

OpenBSD 7.5 - March 21, 2022