540cab1ec8
JME260 Fast Ethernet PCI Express controllers. Written with a lot of cut-n-paste from the FreeBSD jme(4) driver. No support for jumbo ethernet frames yet (but should come soon). Thanks to JMicron Technologies for providing me sample boards and documentation for this work.
90 lines
3.3 KiB
Groff
90 lines
3.3 KiB
Groff
.\" $NetBSD: jme.4,v 1.1 2008/10/11 21:54:11 bouyer Exp $
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.\"
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.\" Copyright (c) 2008 Manuel Bouyer
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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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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgements:
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.\" This product includes software developed by Manuel Bouyer.
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.\" 4. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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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.Dd October 11, 2008
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.Dt JME 4
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.Os
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.Sh NAME
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.Nm jme
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.Nd Ethernet driver for JMicron Technologies JME250 Gigabit Ethernet and
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JME260 Fast Ethernet controllers
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.Sh SYNOPSIS
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.Cd "jme* at pci? dev ? function ?"
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.Pp
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Configuration of PHYs are necessary.
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See
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.Xr mii 4 .
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.Sh DESCRIPTION
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The
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.Nm jme
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device driver supports network adapters based on
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the JMicron Technologies JME250 and JME260 chips.
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The following features are supported:
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.Bd -literal -offset indent
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IPv4 transmit/receive IP/TCP/UDP checksum offload
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IPv6 transmit TCP/UDP checksum offload
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IPv4 and IPv6 TCP segmentation offload
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VLAN tag insertion/removal
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Interrupt coalescing
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10/100/1000Mbps operation in full-duplex mode
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10/100Mbps operation in half-duplex mode
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.Ed
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.Pp
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Interrupt coalescing can be controlled on a per-adapter basis through
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the following sysctls:
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.Bl -tag -width ".Cm hw.jme.jme<x>.int_rxtos"
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.It Cm hw.jme.jme<x>.int_rxtos
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jme receive interrupt moderation timer, in microseconds (defaults to 100)
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.It Cm hw.jme.jme<x>.int_rxct
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jme receive interrupt moderation packet counter (defaults to 2)
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.It Cm hw.jme.jme<x>.int_txto
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jme transmit interrupt moderation timer, in microseconds (defaults to 100)
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.It Cm hw.jme.jme<x>.int_txct
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jme transmit interrupt moderation packet counter (defaults to 2)
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.El
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.Sh SEE ALSO
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.Xr ifmedia 4 ,
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.Xr mii 4 ,
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.Xr netintro 4 ,
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.Xr pci 4 ,
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.Xr ifconfig 8
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.Sh BUGS
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.Pp
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Jumbo frames are not yet supported
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.Pp
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Hardware bugs prevent support of IPv6 receive TCP/UDP checksum offload
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in the JME250 rev A2, and is disabled in the driver.
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This should be revisited when newer hardware revision is available.
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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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.Nx 5.0 .
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