1.\" 2.\" Copyright (c) 2008 Semihalf, Rafal Jaworowski 3.\" 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 16.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 19.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25.\" 26.Dd November 27, 2008 27.Dt MGE 4 28.Os 29.Sh NAME 30.Nm mge 31.Nd "Marvell Gigabit Ethernet device driver" 32.Sh SYNOPSIS 33To compile this driver into the kernel, place the following lines in your 34kernel configuration file: 35.Bd -ragged -offset indent 36.Cd "device mge" 37.Cd "device miibus" 38.Ed 39.Sh DESCRIPTION 40The 41.Nm 42driver provides support for gigabit Ethernet controller integrated in Marvell 43system-on-chip devices. 44.Pp 45The 46.Nm 47driver supports the following media types: 48.Bl -tag -width xxxxxxxxxxxxxxxxxxxx 49.It autoselect 50Enable autoselection of the media type and options 51.It 10baseT/UTP 52Set 10Mbps operation 53.It 100baseTX 54Set 100Mbps operation 55.It 1000baseT 56Set 1000baseT operation 57.El 58.Pp 59The 60.Nm 61driver supports the following media options: 62.Bl -tag -width xxxxxxxxxxxxxxxxxxxx 63.It full-duplex 64Set full duplex operation 65.El 66.Pp 67The 68.Nm 69driver supports polled operation when the system is configured with 70DEVICE_POLLING kernel option, see 71.Xr polling 4 72for more details. 73.Pp 74The 75.Nm 76driver supports reception and transmission of extended frames 77for 78.Xr vlan 4 . 79This capability of 80.Nm 81can be controlled by means of the 82.Cm vlanmtu 83parameter 84to 85.Xr ifconfig 8 . 86.Pp 87The 88.Nm 89driver supports interrupts coalescing (IC) so that raising a transmit/receive 90frame interrupt is delayed, if possible, until a threshold-defined period of 91time has elapsed. 92The following sysctls regulate this behaviour (separately for each path): 93.Bl -tag -width indent 94.It Va dev.mge.X.int_coal.rx_time 95.It Va dev.mge.X.int_coal.tx_time 96.Pp 97Value of 0 disables IC on the given path, value greater than zero corresponds 98to a real time period and is expressed in units equivalent to 64 ticks of the 99MGE clock. 100Maximum allowed value depends on MGE hardware revision. 101User provided values larger than supported will be trimmed to the maximum 102supported. 103More details are available in the reference manual of the device. 104.El 105.Sh HARDWARE 106Gigabit Ethernet controllers built into the following Marvell systems-on-chip 107are known to work with the 108.Nm 109driver: 110.Pp 111.Bl -bullet -compact 112.It 113Orion 88F5182 114.It 115Orion 88F5281 116.It 117Kirkwood 88F6281 (MGE V2) 118.It 119Discovery MV78100 (MGE V2) 120.El 121.Pp 122There are also Marvell system controllers for PowerPC processors, which 123include a variation of this gigabit Ethernet module integrated on chip, and 124they should also work with the 125.Nm 126driver, but this wasn't tested: 127.Pp 128.Bl -bullet -compact 129.It 130MV64430 131.It 132MV64460, MV64461, MV64462 133.El 134.Sh SEE ALSO 135.Xr altq 4 , 136.Xr arp 4 , 137.Xr miibus 4 , 138.Xr netintro 4 , 139.Xr ng_ether 4 , 140.Xr polling 4 , 141.Xr vlan 4 , 142.Xr ifconfig 8 143.Sh HISTORY 144The 145.Nm 146device driver first appeared in 147.Fx 8.0 . 148.Sh AUTHORS 149.An -nosplit 150The base version of 151.Nm 152device driver was written by 153.An Grzegorz Bernacki. 154It has been extended with advanced features (polling, interrupt coalescing, 155multicast, h/w checksum calculation etc.) by 156.An Piotr Ziecik . 157This manual page was written by 158.An Rafal Jaworowski . 159