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diff --git a/share/man/man4/em.4 b/share/man/man4/em.4 new file mode 100644 index 0000000..9c95286 --- /dev/null +++ b/share/man/man4/em.4 @@ -0,0 +1,289 @@ +.\" Copyright (c) 2001-2003, Intel Corporation +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions are met: +.\" +.\" 1. Redistributions of source code must retain the above copyright notice, +.\" this list of conditions and the following disclaimer. +.\" +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" 3. Neither the name of the Intel Corporation nor the names of its +.\" contributors may be used to endorse or promote products derived from +.\" this software without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +.\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" * Other names and brands may be claimed as the property of others. +.\" +.\" $FreeBSD$ +.\" +.Dd October 11, 2011 +.Dt EM 4 +.Os +.Sh NAME +.Nm em +.Nd "Intel(R) PRO/1000 Gigabit Ethernet adapter driver" +.Sh SYNOPSIS +To compile this driver into the kernel, +place the following line in your +kernel configuration file: +.Bd -ragged -offset indent +.Cd "device em" +.Ed +.Pp +Alternatively, to load the driver as a +module at boot time, place the following line in +.Xr loader.conf 5 : +.Bd -literal -offset indent +if_em_load="YES" +.Ed +.Sh DESCRIPTION +The +.Nm +driver provides support for PCI Gigabit Ethernet adapters based on +the Intel 82540, 82541ER, 82541PI, 82542, 82543, 82544, 82545, 82546, +82546EB, 82546GB, 82547, 82571, 81572, 82573, and 82574 Ethernet +controller chips. +The driver supports Transmit/Receive checksum offload +and Jumbo Frames on all but 82542-based adapters. +Furthermore it supports TCP segmentation offload (TSO) on all adapters but +those based on the 82543, 82544 and 82547 controller chips. +The identification LEDs of the adapters supported by the +.Nm +driver can be controlled via the +.Xr led 4 +API for localization purposes. +For further hardware information, see the +.Pa README +included with the driver. +.Pp +For questions related to hardware requirements, +refer to the documentation supplied with your Intel PRO/1000 adapter. +All hardware requirements listed apply to use with +.Fx . +.Pp +Support for Jumbo Frames is provided via the interface MTU setting. +Selecting an MTU larger than 1500 bytes with the +.Xr ifconfig 8 +utility configures the adapter to receive and transmit Jumbo Frames. +The maximum MTU size for Jumbo Frames is 16114. +.Pp +This driver version supports VLANs. +The +.Nm +driver supports the following media types: +.Bl -tag -width ".Cm 10baseT/UTP" +.It Cm autoselect +Enables auto-negotiation for speed and duplex. +.It Cm 10baseT/UTP +Sets 10Mbps operation. +Use the +.Cm mediaopt +option to select +.Cm full-duplex +mode. +.It Cm 100baseTX +Sets 100Mbps operation. +Use the +.Cm mediaopt +option to select +.Cm full-duplex +mode. +.It Cm 1000baseSX +Sets 1000Mbps operation. +Only +.Cm full-duplex +mode is supported at this speed. +.It Cm 1000baseTX +Sets 1000Mbps operation. +Only +.Cm full-duplex +mode is supported at this speed. +.El +.Pp +The +.Nm +driver supports the following media options: +.Bl -tag -width ".Cm full-duplex" +.It Cm full-duplex +Forces full-duplex operation +.It Cm half-duplex +Forces half-duplex operation. +.El +.Pp +Only use +.Cm mediaopt +to set the driver to +.Cm full-duplex . +If +.Cm mediaopt +is not specified, the driver defaults to +.Cm half-duplex . +.Pp +For more information on configuring this device, see +.Xr ifconfig 8 . +.Sh HARDWARE +The +.Nm +driver supports Gigabit Ethernet adapters based on the Intel +82540, 82541ER, 82541PI, 82542, 82543, 82544, 82545, 82546, 82546EB, +82546GB, 82547, 82571, 82572, 82573, and 82574 controller chips: +.Pp +.Bl -bullet -compact +.It +Intel PRO/1000 CT Network Connection (82547) +.It +Intel PRO/1000 F Server Adapter (82543) +.It +Intel PRO/1000 Gigabit Server Adapter (82542) +.It +Intel PRO/1000 GT Desktop Adapter (82541PI) +.It +Intel PRO/1000 MF Dual Port Server Adapter (82546) +.It +Intel PRO/1000 MF Server Adapter (82545) +.It +Intel PRO/1000 MF Server Adapter (LX) (82545) +.It +Intel PRO/1000 MT Desktop Adapter (82540) +.It +Intel PRO/1000 MT Desktop Adapter (82541) +.It +Intel PRO/1000 MT Dual Port Server Adapter (82546) +.It +Intel PRO/1000 MT Quad Port Server Adapter (82546EB) +.It +Intel PRO/1000 MT Server Adapter (82545) +.It +Intel PRO/1000 PF Dual Port Server Adapter (82571) +.It +Intel PRO/1000 PF Quad Port Server Adapter (82571) +.It +Intel PRO/1000 PF Server Adapter (82572) +.It +Intel PRO/1000 PT Desktop Adapter (82572) +.It +Intel PRO/1000 PT Dual Port Server Adapter (82571) +.It +Intel PRO/1000 PT Quad Port Server Adapter (82571) +.It +Intel PRO/1000 PT Server Adapter (82572) +.It +Intel PRO/1000 T Desktop Adapter (82544) +.It +Intel PRO/1000 T Server Adapter (82543) +.It +Intel PRO/1000 XF Server Adapter (82544) +.It +Intel PRO/1000 XT Server Adapter (82544) +.El +.Sh LOADER TUNABLES +Tunables can be set at the +.Xr loader 8 +prompt before booting the kernel or stored in +.Xr loader.conf 5 . +.Bl -tag -width indent +.It Va hw.em.rxd +Number of receive descriptors allocated by the driver. +The default value is 1024 for adapters newer than 82547, +and 256 for older ones. +The 82542 and 82543-based adapters can handle up to 256 descriptors, +while others can have up to 4096. +.It Va hw.em.txd +Number of transmit descriptors allocated by the driver. +The default value is 1024 for adapters newer than 82547, +and 256 for older ones. +The 82542 and 82543-based adapters can handle up to 256 descriptors, +while others can have up to 4096. +.It Va hw.em.rx_int_delay +This value delays the generation of receive interrupts in units of +1.024 microseconds. +The default value is 0, since adapters may hang with this feature +being enabled. +.It Va hw.em.rx_abs_int_delay +If +.Va hw.em.rx_int_delay +is non-zero, this tunable limits the maximum delay in which a receive +interrupt is generated. +.It Va hw.em.tx_int_delay +This value delays the generation of transmit interrupts in units of +1.024 microseconds. +The default value is 64. +.It Va hw.em.tx_abs_int_delay +If +.Va hw.em.tx_int_delay +is non-zero, this tunable limits the maximum delay in which a transmit +interrupt is generated. +.El +.Sh FILES +.Bl -tag -width /dev/led/em* +.It Pa /dev/led/em* +identification LED device nodes +.El +.Sh EXAMPLES +Make the identification LED of em0 blink: +.Pp +.Dl "echo f2 > /dev/led/em0" +.Pp +Turn the identification LED of em0 off again: +.Pp +.Dl "echo 0 > /dev/led/em0" +.Sh DIAGNOSTICS +.Bl -diag +.It "em%d: Unable to allocate bus resource: memory" +A fatal initialization error has occurred. +.It "em%d: Unable to allocate bus resource: interrupt" +A fatal initialization error has occurred. +.It "em%d: watchdog timeout -- resetting" +The device has stopped responding to the network, or there is a problem with +the network connection (cable). +.El +.Sh SUPPORT +For general information and support, +go to the Intel support website at: +.Pa http://support.intel.com . +.Pp +If an issue is identified with the released source code on the supported kernel +with a supported adapter, email the specific information related to the +issue to +.Aq freebsd@intel.com . +.Sh SEE ALSO +.Xr altq 4 , +.Xr arp 4 , +.Xr igb 4 , +.Xr led 4 , +.Xr netintro 4 , +.Xr ng_ether 4 , +.Xr polling 4 , +.Xr vlan 4 , +.Xr ifconfig 8 +.Sh HISTORY +The +.Nm +device driver first appeared in +.Fx 4.4 . +.Sh AUTHORS +The +.Nm +driver was written by +.An Intel Corporation Aq freebsd@intel.com . +.Sh BUGS +Hardware-assisted VLAN processing is disabled by default. +You can enable it on an +.Nm +interface using +.Xr ifconfig 8 . |
