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Manual Pages  — MIIBUS


miibus – IEEE 802.3 Media Independent Interface network bus



For most network interface cards (NIC): device miibus


The miibus driver provides an interconnection between the Media Access Control (MAC) sublayer, the Physical Layer entities (PHY), Station Management (STA) entities, and the PHY Layer as defined by the IEEE 802.3 Standard.

The miibus layer allows network device drivers to share common support code for various external PHY devices. Most 10/100 network interface cards either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. The miibus driver currently handles all of the media detection, selection, and reporting using the ifmedia interface. A generic driver has been included for all PHYs that are not handled by a specific driver, this is possible because all 10/100 PHYs implement the same general register set along with their vendor specific register set.

The following network device drivers use the miibus interface:

ae(4) Attansic/Atheros L2 Fast Ethernet
age(4) Attansic/Atheros L1 Gigabit Ethernet
alc(4) Atheros AR8131/AR8132 PCIe Ethernet
ale(4) Atheros AR8121/AR8113/AR8114 PCIe Ethernet
aue(4) ADMtek USB Ethernet
axe(4) ASIX Electronics AX88172 USB Ethernet
axge(4) ASIX Electronics AX88178A/AX88179 USB Ethernet
bce(4) Broadcom NetXtreme II Gigabit Ethernet
bfe(4) Broadcom BCM4401 Ethernet
bge(4) Broadcom BCM570xx Gigabit Ethernet
cas(4) Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
dc(4) DEC/Intel 21143 and various workalikes
ed(4) NE[12]000, SMC Ultra, 3c503, DS8390 cards
et(4) Agere ET1310 Gigabit Ethernet
fxp(4) Intel EtherExpress PRO/100B
gem(4) Sun ERI, Sun GEM and Apple GMAC Ethernet
hme(4) Sun HME Ethernet
jme(4) JMicron JMC250 Gigabit/JMC260 Fast Ethernet
lge(4) Level 1 LXT1001 NetCellerator Gigabit Ethernet
msk(4) Marvell/SysKonnect Yukon II Gigabit Ethernet
nfe(4) NVIDIA nForce MCP Networking Adapter
nge(4) National Semiconductor DP83820/DP83821 Gigabit Ethernet
pcn(4) AMD Am79C97x PCI 10/100
re(4) RealTek 8139C+/8169/8169S/8110S
rl(4) RealTek 8129/8139
rue(4) RealTek RTL8150 USB To Fast Ethernet
sf(4) Adaptec AIC-6915
sge(4) Silicon Integrated Systems SiS190/191 Ethernet
sis(4) Silicon Integrated Systems SiS 900/SiS 7016
sk(4) SysKonnect SK-984x and SK-982x Gigabit Ethernet
smsc(4) SMSC LAN9xxx USB Fast Ethernet
ste(4) Sundance ST201 (D-Link DFE-550TX)
stge(4) Sundance/Tamarack TC9021 Gigabit Ethernet
tl(4) Texas Instruments ThunderLAN
tx(4) SMC EtherPower II (83c170)
udav(4) Davicom DM9601 USB Ethernet
ure(4) RealTek RTL8152 USB To Fast Ethernet
vge(4) VIA VT612x PCI Gigabit Ethernet
vr(4) VIA Rhine, Rhine II
vte(4) DM&P Vortex86 RDC R6040 Fast Ethernet
wb(4) Winbond W89C840F
xl(4) 3Com 3c90x


The implementation of miibus was originally intended to have similar API interfaces to
.Bsx 3.0 and NetBSD but as a result are not well behaved newbus device drivers.


ae(4), age(4), alc(4), ale(4), arp(4), aue(4), axe(4), axge(4), bce(4), bfe(4), bge(4), cas(4), dc(4), ed(4), et(4), fxp(4), gem(4), hme(4), jme(4), lge(4), msk(4), netintro(4), nfe(4), nge(4), pcn(4), re(4), rgephy(4), rl(4), rue(4), sf(4), sge(4), sis(4), sk(4), smsc(4), ste(4), stge(4), tl(4), tx(4), udav(4), ure(4), vge(4), vr(4), vte(4), wb(4), xl(4)


More information on MII can be found in the IEEE 802.3 Standard.


The miibus driver first appeared in FreeBSD 3.3 .


This manual page was written by Tom Rhodes <Mt trhodes@FreeBSD.org>.

MIIBUS (4) December 1, 2015

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