161 lines
4.2 KiB
Groff
161 lines
4.2 KiB
Groff
.\"
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.\" Copyright (c) 2008 Semihalf, Rafal Jaworowski
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.\"
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.\" All rights reserved.
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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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd November 27, 2008
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.Dt MGE 4
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.Os
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.Sh NAME
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.Nm mge
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.Nd "Marvell Gigabit Ethernet device driver"
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.Sh SYNOPSIS
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To compile this driver into the kernel, place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device mge"
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.Cd "device miibus"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for gigabit Ethernet controller integrated in Marvell
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system-on-chip devices.
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.Pp
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The
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.Nm
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driver supports the following media types:
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.Bl -tag -width xxxxxxxxxxxxxxxxxxxx
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.It autoselect
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Enable autoselection of the media type and options
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.It 10baseT/UTP
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Set 10Mbps operation
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.It 100baseTX
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Set 100Mbps operation
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.It 1000baseT
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Set 1000baseT operation
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.El
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.Pp
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The
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.Nm
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driver supports the following media options:
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.Bl -tag -width xxxxxxxxxxxxxxxxxxxx
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.It full-duplex
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Set full duplex operation
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.El
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.Pp
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The
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.Nm
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driver supports polled operation when the system is configured with
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DEVICE_POLLING kernel option, see
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.Xr polling 4
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for more details.
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.Pp
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The
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.Nm
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driver supports reception and transmission of extended frames
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for
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.Xr vlan 4 .
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This capability of
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.Nm
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can be controlled by means of the
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.Cm vlanmtu
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parameter
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to
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.Xr ifconfig 8 .
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.Pp
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The
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.Nm
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driver supports interrupts coalescing (IC) so that raising a transmit/receive
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frame interrupt is delayed, if possible, until a threshold-defined period of
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time has elapsed.
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The following sysctls regulate this behaviour (separately for each path):
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.Bl -tag -width indent
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.It Va dev.mge.X.int_coal.rx_time
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.It Va dev.mge.X.int_coal.tx_time
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.Pp
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Value of 0 disables IC on the given path, value greater than zero corresponds
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to a real time period and is expressed in units equivalent to 64 ticks of the
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MGE clock.
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Maximum allowed value depends on MGE hardware revision.
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User provided values larger than supported will be trimmed to the maximum
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supported.
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More details are available in the reference manual of the device.
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.El
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.Sh HARDWARE
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Gigabit Ethernet controllers built into the following Marvell systems-on-chip
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are known to work with the
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.Nm
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driver:
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.Pp
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.Bl -bullet -compact
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.It
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Orion 88F5182
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.It
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Orion 88F5281
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.It
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Kirkwood 88F6281 (MGE V2)
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.It
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Discovery MV78100 (MGE V2)
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.El
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.Pp
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There are also Marvell system controllers for PowerPC processors, which
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include a variation of this gigabit Ethernet module integrated on chip, and
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they should also work with the
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.Nm
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driver, but this wasn't tested:
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.Pp
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.Bl -bullet -compact
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.It
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MV64430
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.It
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MV64460, MV64461, MV64462
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.El
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.Sh SEE ALSO
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.Xr altq 4 ,
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.Xr arp 4 ,
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.Xr miibus 4 ,
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.Xr netintro 4 ,
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.Xr ng_ether 4 ,
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.Xr polling 4 ,
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.Xr vlan 4 ,
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.Xr ifconfig 8
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.Sh HISTORY
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The
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.Nm
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device driver first appeared in
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.Fx 8.0 .
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.Sh AUTHORS
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.An -nosplit
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The base version of
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.Nm
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device driver was written by
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.An Grzegorz Bernacki.
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It has been extended with advanced features (polling, interrupt coalescing,
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multicast, h/w checksum calculation etc.) by
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.An Piotr Ziecik .
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This manual page was written by
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.An Rafal Jaworowski .
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