mii(4)
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MII(4) NetBSD Programmer's Manual MII(4)
NAME
mii - IEEE 802.3 Media Independent Interface network bus
SYNOPSIS
exphy* at mii? phy ? # 3Com internal PHYs
icsphy* at mii? phy ? # Integrated Circuit Systems ICS1890 PHYs
inphy* at mii? phy ? # Intel 82555 PHYs
iophy* at mii? phy ? # Intel 82553 PHYs
lxtphy* at mii? phy ? # Level One LXT-970 PHYs
nsphy* at mii? phy ? # National Semiconductor NS83840 PHYs
qsphy* at mii? phy ? # Quality Semiconductor QS6612 PHYs
sqphy* at mii? phy ? # Seeq 80220/80221/80223 PHYs
tlphy* at mii? phy ? # ThunderLAN internal PHYs
tqphy* at mii? phy ? # TSC Semiconductor 78Q2120 PHYs
ukphy* at mii? phy ? # Generic/unknown PHYs
DESCRIPTION
Media Independent Interface is an IEEE standard serial bus for connecting
MACs (network controllers) to PHYs (physical media interfaces). The mii
layer allows network device drivers to share support code for various PHY
models, and allows unused support for PHYs which are not present in a
system to be removed from the kernel.
Network device drivers which use the mii layer carry the ``mii'' autocon-
figuration attribute. This allows kernel configuration files to simply
specify PHYs as described above in the synopsis.
The following is an example of the messages displayed when a network in-
terface with an attached PHY is detected by the kernel:
epic0 at pci0 dev 12 function 0: SMC EPIC/100 Fast Ethernet
epic0: interrupting at kn20aa irq 4
epic0: SMC9432TX, Ethernet address 00:e0:29:07:17:c4
qsphy0 at epic0 phy 3: QS6612 10/100 media interface, rev. 1
qsphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
All PHY drivers display the media types supported by the PHY when it is
detected by the kernel. These media types are valid media keywords for
use with the ifconfig(8) program.
SEE ALSO
exphy(4), icsphy(4), ifmedia(4), inphy(4), iophy(4), intro(4), lxtphy(4),
nsphy(4), qsphy(4), sqphy(4), tlphy(4), tqphy(4), ukphy(4), ifconfig(8)
NetBSD 1.5 November 3, 1998 1
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