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.Dd December 25, 2019
.Dt CAS 4
.Os
.Sh NAME
.Nm cas
.Nd Cassini/Cassini+ (GigaSwift) Ethernet device driver
.Sh SYNOPSIS
.Cd "cas* at pci? dev ? function ?"
.Pp
Configuration of PHYs may also be necessary.
See
.Xr mii 4 .
.Sh DESCRIPTION
The
.Nm
driver provides support for the Sun Cassini and Cassini+ (GigaSwift) and the
National Semiconductor Saturn Ethernet hardware found in Sun UltraSPARC machines
and Sun GigaSwift PCI cards.
.Pp
Cards supported by this driver include:
.Bl -bullet -compact
.It
Sun GigaSwift Ethernet 1.0 MMF (Cassini Kuheen)
(part no.\& 501-5524)
.It
Sun GigaSwift Ethernet 1.0 UTP (Cassini)
(part no.\& 501-5902)
.It
Sun GigaSwift Ethernet UTP (GCS)
(part no.\& 501-6719)
.It
Sun Quad GigaSwift Ethernet UTP (QGE)
(part no.\& 501-6522)
.It
Sun Quad GigaSwift Ethernet PCI-X (QGE-X)
(part no.\& 501-6738)
.El
.Sh SEE ALSO
.Xr brgphy 4 ,
.Xr gentbi 4 ,
.Xr gphyter 4 ,
.Xr ifmedia 4 ,
.Xr intro 4 ,
.Xr mii 4 ,
.Xr ifconfig 8
.Rs
.%T "Cassini+ ASIC Specification"
.%A Sun Microsystems
.%U http://www.sun.com/processors/manuals/cs_plus.pdf
.Re
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 4.1 .
.Nx
support was added in
.Nx 6.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written for
.Ox
by
.An Mark Kettenis
.Aq kettenis@openbsd.org ,
based on the
.Xr gem 4
driver, and ported to
.Nx
by
.An Julian Coleman
.Aq jdc@NetBSD.org .
.Sh BUGS
The
.Nm
driver does not support any of the advanced features of the Cassini chip.
.Pp
On the SX fibre variants of the hardware, the link may stay down if media
options apart from
.Dv autoselect
are chosen.