.\"	$OpenBSD: nep.4,v 1.3 2022/09/07 01:22:08 jsg Exp $
.\"
.\" Copyright (c) 2015 Mark Kettenis <kettenis@openbsd.org>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: September 7 2022 $
.Dt NEP 4
.Os
.Sh NAME
.Nm nep
.Nd Sun Neptune 10Gb Ethernet device
.Sh SYNOPSIS
.Cd "nep* at pci?"
.Cd "brgphy* at mii?"
.Sh DESCRIPTION
The
.Nm
driver provides support for various NICs based on the Sun Neptune
Ethernet controller chips, including the following:
.Pp
.Bl -bullet -compact -offset indent
.It
Sun Quad GbE UTP x8 PCI Express Card
.It
Sun Quad GbE UTP x8 PCIe ExpressModule
.El
.Pp
It uses an internal or external PHY or an external 10-bit interface.
.Pp
The
.Nm
driver supports several media types, which are selected via the
.Xr ifconfig 8
command.
The supported media types are:
.Bl -tag -width "media" -offset indent
.It Cm media No autoselect
Attempt to autoselect the media type (default)
.It Cm media No 1000baseT Cm mediaopt No full-duplex
Use 1000baseT on copper, full duplex
.It Cm media No 1000baseT Cm mediaopt No half-duplex
Use 1000baseT on copper, half duplex
.It Cm media No 100baseTX Cm mediaopt No full-duplex
Use 100baseTX, full duplex
.It Cm media No 100baseTX Cm mediaopt No half-duplex
Use 100baseTX, half duplex
.El
.Sh SEE ALSO
.Xr arp 4 ,
.Xr brgphy 4 ,
.Xr ifmedia 4 ,
.Xr inet 4 ,
.Xr intro 4 ,
.Xr netintro 4 ,
.Xr hostname.if 5 ,
.Xr ifconfig 8
.Sh HISTORY
.Ox
support for
.Nm
first appeared in
.Ox 5.7 .
.Sh AUTHORS
The
.Nm
driver was written by
.An Mark Kettenis Aq Mt kettenis@openbsd.org .
.Sh BUGS
The
.Nm
driver currently only supports 1Gb Ethernet NICs.
It also does not yet use many of the advanced features the Neptune
chip offers.