Copyright (c) 2001 Miodrag Vallat.
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.Dd $Mdocdate: September 8 2021 $ .Dt GEM 4 .Os .Sh NAME .Nm gem .Nd GEM 10/100/1Gb Ethernet device .Sh SYNOPSIS .Cd "gem* at pci?" .Cd "gem* at sbus?" .Cd "bmtphy* at mii?" .Cd "brgphy* at mii?" .Cd "eephy* at mii?" .Cd "gentbi* at mii?" .Cd "luphy* at mii?" .Cd "lxtphy* at mii?" .Sh DESCRIPTION The .Nm driver provides support for various NICs based on the GEM Ethernet controller chips, including the following:
p l -bullet -compact -offset indent t Apple GMAC (10/100/1000baseT) t Sun ERI (10/100baseT) t Sun GEM (10/100/1000baseT) t Sun GEM (1000baseSX) .El
p It uses an external PHY or an external 10-bit interface.
p The .Nm driver supports several media types, which are selected via the .Xr ifconfig 8 command. The supported media types are: l -tag -width "media" -offset indent t Cm media No autoselect Attempt to autoselect the media type (default) t Cm media No 1000baseT Cm mediaopt No full-duplex Use 1000baseT on copper, full duplex t Cm media No 1000baseT Cm mediaopt No half-duplex Use 1000baseT on copper, half duplex t Cm media No 1000baseSX Cm mediaopt No full-duplex Use 1000baseSX on fiber, full duplex t Cm media No 1000baseSX Cm mediaopt No half-duplex Use 1000baseSX on fiber, half duplex t Cm media No 100baseTX Cm mediaopt No full-duplex Use 100baseTX, full duplex t Cm media No 100baseTX Cm mediaopt No half-duplex Use 100baseTX, half duplex t Cm media No 10baseT Cm mediaopt No full-duplex Use 10baseT, full duplex t Cm media No 10baseT Cm mediaopt No half-duplex Use 10baseT, half duplex .El .Sh SEE ALSO .Xr arp 4 , .Xr bmtphy 4 , .Xr brgphy 4 , .Xr eephy 4 , .Xr gentbi 4 , .Xr ifmedia 4 , .Xr inet 4 , .Xr intro 4 , .Xr luphy 4 , .Xr lxtphy 4 , .Xr netintro 4 , .Xr hostname.if 5 , .Xr ifconfig 8 .Sh HISTORY .Ox support for .Nm first appeared in .Ox 3.0 .