1.\" Copyright (c) 2001 Intel Corporation 2.\" All rights reserved. 3.\" Redistribution and use in source and binary forms of the Software, with or without 4.\" modification, are permitted provided that the following conditions 5.\" are met: 6.\" 1. Redistributions of source code of the Software may retain the above 7.\" copyright notice, this list of conditions and the following disclaimer. 8.\" 2. Redistributions in binary form of the Software may reproduce the 9.\" above copyright notice, this list of conditions and the following 10.\" disclaimer in the documentation and/or other materials provided with the 11.\" distribution. 12.\" 3. Neither the name of the Intel Corporation nor the names of its contributors 13.\" shall be used to endorse or promote products derived from this Software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17.\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE INTEL OR ITS CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 23.\" CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 25.\" USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26.\" 27.\" $FreeBSD$ 28 29 30.Dd October, 2001 31.Dt EM 4 32.Os FreeBSD 33.Sh NAME 34.Nm em 35.Nd 36Intel(R) PRO/1000 gigabit ethernet driver for the FreeBSD operating system 37.Sh SYNOPSIS 38.Cd "device em" 39.Sh DESCRIPTION 40The 41.Nm 42driver provides support for PCI gigabit ethernet adapters based on 43the Intel 82542, 82543 and 82544 ethernet controller chip. 44The driver supports Transmit/Receive checksum offload 45and jumbo frames only on 82543 and 82544-based adapters. 46For a list of supported adapters, see the README 47included with the driver. 48.Pp 49For questions related to hardware requirements, 50refer to the documentation supplied with your Intel PRO/1000 adapter. 51All hardware requirements listed apply to use with FreeBSD. 52.Pp 53Support for jumbo frames is provided via the interface MTU setting. 54Selecting an MTU larger than 1500 bytes with the 55.Xr ifconfig 8 56utility configures the adapter to receive and transmit jumbo frames. 57The maximum MTU size for jumbo frames is 9000. 58.Pp 59The 60.Nm 61driver supports the following media types: 62.Pp 63.Bl -tag -width xxxxxxxxxxxxxxxxxxxx 64.It autoselect 65Enables auto-negotiation for speed and duplex. 66.It 10baseT/UTP 67Sets 10Mbps operation. 68The 69.Ar mediaopt 70option can also be used to select either 71.Ar full-duplex 72or 73.Ar half-duplex 74modes. 75.It 100baseTX 76Sets 100Mbps operation. 77The 78.Ar mediaopt 79option can also be used to select either 80.Ar full-duplex 81or 82.Ar half-duplex 83modes. 84.It 1000baseSX 85Sets 1000Mbps operation. 86Only 87.Ar full-duplex 88mode is supported at this speed. 89.It 1000baseTX 90Sets 1000Mbps operation. 91Only 92.Ar full-duplex 93mode is supported at this speed. 94.El 95.Pp 96The 97.Nm 98driver supports the following media options: 99.Pp 100.Bl -tag -width xxxxxxxxxxxxxxxxxxxx 101.It full-duplex 102Forces full duplex operation 103.It half-duplex 104Forces half duplex operation. 105.El 106.Pp 107For more information on configuring this device, see 108.Xr ifconfig 8 . 109.Sh DIAGNOSTICS 110.Bl -diag 111.It "em%d: Unable to allocate bus resource: memory" 112A fatal initialization error has occurred. 113.It "em%d: Unable to allocate bus resource: interrupt" 114A fatal initialization error has occurred. 115.It "em%d: No memory for jumbo buffers!" 116The driver failed to allocate memory for jumbo frames during 117initialization. 118.It "em%d: watchdog timeout -- resetting" 119The device has stopped responding to the network, or there is a problem with 120the network connection (cable). 121.El 122.Sh SUPPORT 123For additional information regarding building and installation, 124see the README included with the driver. For general information and support, 125go to the Intel support Website at: 126.Ar http://support.intel.com. 127.Pp 128If an issue is identified with the released source code on the supported kernel 129with a supported adapter, email the specific information related to the 130issue to freebsdnic@mailbox.intel.com. 131.El 132.Sh SEE ALSO 133.Xr arp 4 , 134.Xr netintro 4 , 135.Xr vlan 4 , 136.Xr ng_ether 4 , 137.Xr ifconfig 8 138.Sh HISTORY 139The 140.Nm 141device driver first appeared in 142.Fx 4.4 . 143.Sh AUTHORS 144The 145.Nm 146driver was written by 147.An Intel Corporation Aq freebsdnic@mailbox.intel.com . 148