cf754f452f
already in the DESCRIPTION section, but this allows for the manual page to be used in the automatic hardware notes generation. MFC after: 3 days
165 lines
5.0 KiB
Groff
165 lines
5.0 KiB
Groff
.\" Copyright (c) 2008 Pyun YongHyeon
|
|
.\" 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.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd October 6, 2008
|
|
.Dt JME 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm jme
|
|
.Nd JMicron Gigabit/Fast Ethernet driver
|
|
.Sh SYNOPSIS
|
|
To compile this driver into the kernel,
|
|
place the following lines in your
|
|
kernel configuration file:
|
|
.Bd -ragged -offset indent
|
|
.Cd "device miibus"
|
|
.Cd "device jme"
|
|
.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_jme_load="YES"
|
|
.Ed
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
device driver provides support for JMicron JMC250 PCI Express
|
|
Gigabit Ethernet controllers and JMicron JMC260 PCI Express Fast
|
|
Ethernet controllers.
|
|
.Pp
|
|
All LOMs supported by the
|
|
.Nm
|
|
driver have TCP/UDP/IP checksum offload for both transmit and receive,
|
|
TCP segmentation offload (TSO), hardware VLAN tag stripping/insertion
|
|
features, Wake On Lan (WOL) and an interrupt coalescing/moderation
|
|
mechanism as well as a 64-bit multicast hash filter.
|
|
.Pp
|
|
The JMC250 also supports Jumbo Frames (up to 9216 bytes), which can be
|
|
configured 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.
|
|
.Pp
|
|
The
|
|
.Nm
|
|
driver supports the following media types:
|
|
.Bl -tag -width ".Cm 10baseT/UTP"
|
|
.It Cm autoselect
|
|
Enable autoselection of the media type and options.
|
|
The user can manually override
|
|
the autoselected mode by adding media options to
|
|
.Xr rc.conf 5 .
|
|
.It Cm 10baseT/UTP
|
|
Set 10Mbps operation.
|
|
.It Cm 100baseTX
|
|
Set 100Mbps (Fast Ethernet) operation.
|
|
.It Cm 1000baseTX
|
|
Set 1000baseTX operation over twisted pair.
|
|
.El
|
|
.Pp
|
|
The
|
|
.Nm
|
|
driver supports the following media options:
|
|
.Bl -tag -width ".Cm full-duplex"
|
|
.It Cm full-duplex
|
|
Force full duplex operation.
|
|
.It Cm half-duplex
|
|
Force half duplex operation.
|
|
.El
|
|
.Pp
|
|
For more information on configuring this device, see
|
|
.Xr ifconfig 8 .
|
|
.Sh HARDWARE
|
|
The
|
|
.Nm
|
|
device driver provides support for the following Ethernet controllers:
|
|
.Pp
|
|
.Bl -bullet -compact
|
|
.It
|
|
JMicron JMC250 PCI Express Gigabit Ethernet controller
|
|
.It
|
|
JMicron JMC260 PCI Express Fast Ethernet controller
|
|
.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 "xxxxxx"
|
|
.It Va hw.jme.msi_disable
|
|
This tunable disables MSI support on the Ethernet hardware.
|
|
The default value is 0.
|
|
.It Va hw.jme.msix_disable
|
|
This tunable disables MSI-X support on the Ethernet hardware.
|
|
The default value is 0.
|
|
.El
|
|
.Sh SYSCTL VARIABLES
|
|
The following variables are available as both
|
|
.Xr sysctl 8
|
|
variables and
|
|
.Xr loader 8
|
|
tunables:
|
|
.Bl -tag -width "xxxxxx"
|
|
.It Va dev.jme.%d.tx_coal_to
|
|
Maximum amount of time to delay for Tx completion interrupt in
|
|
units of 1us.
|
|
The accepted range is 1 to 65535, the default is 100 (100us).
|
|
.It Va dev.jme.%d.tx_coal_pkt
|
|
Maximum number of packets to fire Tx completion interrupt.
|
|
The accepted range is 1 to 255, the default is 8.
|
|
.It Va dev.jme.%d.rx_coal_to
|
|
Maximum amount of time to delay for Rx completion interrupt in
|
|
units of 1us.
|
|
The accepted range is 1 to 65535, the default is 100 (100us).
|
|
.It Va dev.jme.%d.rx_coal_pkt
|
|
Maximum number of packets to fire Rx completion interrupt.
|
|
The accepted range is 1 to 255, the default is 2.
|
|
.It Va dev.jme.%d.process_limit
|
|
Maximum amount of Rx events to be processed in the event loop before
|
|
rescheduling a taskqueue.
|
|
The accepted range is 10 to 255, the default value is 128 events.
|
|
The interface does not need to be brought down and up again before
|
|
a change takes effect.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr altq 4 ,
|
|
.Xr arp 4 ,
|
|
.Xr miibus 4 ,
|
|
.Xr netintro 4 ,
|
|
.Xr ng_ether 4 ,
|
|
.Xr vlan 4 ,
|
|
.Xr ifconfig 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
driver was written by
|
|
.An Pyun YongHyeon
|
|
.Aq yongari@FreeBSD.org .
|
|
It first appeared in
|
|
.Fx 7.1 .
|