102 lines
4.1 KiB
Groff
102 lines
4.1 KiB
Groff
.\" $NetBSD: mii.4,v 1.7 1999/12/15 22:07:33 abs Exp $
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.\"
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.\" Copyright (c) 1998 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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.\" NASA Ames Research Center.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd November 3, 1998
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.Dt MII 4
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.Os
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.Sh NAME
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.Nm mii
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.Nd IEEE 802.3 Media Independent Interface network bus
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.Sh SYNOPSIS
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.Cd "exphy* at mii? phy ? # 3Com internal PHYs"
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.Cd "icsphy* at mii? phy ? # Integrated Circuit Systems ICS1890 PHYs"
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.Cd "inphy* at mii? phy ? # Intel 82555 PHYs"
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.Cd "iophy* at mii? phy ? # Intel 82553 PHYs"
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.Cd "lxtphy* at mii? phy ? # Level One LXT-970 PHYs"
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.Cd "nsphy* at mii? phy ? # National Semiconductor NS83840 PHYs"
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.Cd "qsphy* at mii? phy ? # Quality Semiconductor QS6612 PHYs"
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.Cd "sqphy* at mii? phy ? # Seeq 80220/80221/80223 PHYs"
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.Cd "tlphy* at mii? phy ? # ThunderLAN internal PHYs"
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.Cd "tqphy* at mii? phy ? # TSC Semiconductor 78Q2120 PHYs"
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.Cd "ukphy* at mii? phy ? # Generic/unknown PHYs"
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.Sh DESCRIPTION
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Media Independent Interface is an IEEE standard serial bus for
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connecting MACs (network controllers) to PHYs (physical media
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interfaces). The
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.Nm
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layer allows network device drivers to share support code for
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various PHY models, and allows unused support for PHYs which
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are not present in a system to be removed from the kernel.
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.Pp
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Network device drivers which use the
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.Nm
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layer carry the
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.Dq mii
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autoconfiguration attribute. This allows kernel configuration
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files to simply specify PHYs as described above in the synopsis.
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.Pp
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The following is an example of the messages displayed when a network
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interface with an attached PHY is detected by the kernel:
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.Bd -literal -offset indent
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epic0 at pci0 dev 12 function 0: SMC EPIC/100 Fast Ethernet
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epic0: interrupting at kn20aa irq 4
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epic0: SMC9432TX, Ethernet address 00:e0:29:07:17:c4
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qsphy0 at epic0 phy 3: QS6612 10/100 media interface, rev. 1
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qsphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
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.Ed
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.Pp
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All PHY drivers display the media types supported by the PHY when it
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is detected by the kernel. These media types are valid media keywords
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for use with the
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.Xr ifconfig 8
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program.
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.Sh SEE ALSO
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.Xr exphy 4 ,
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.Xr icsphy 4 ,
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.Xr ifmedia 4 ,
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.Xr inphy 4 ,
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.Xr iophy 4 ,
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.Xr intro 4 ,
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.Xr lxtphy 4 ,
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.Xr nsphy 4 ,
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.Xr qsphy 4 ,
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.Xr sqphy 4 ,
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.Xr tlphy 4 ,
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.Xr tqphy 4 ,
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.Xr ukphy 4 ,
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.Xr ifconfig 8
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