Add device driver support for the ASIX Electronics AX88172 USB 2.0

ethernet controller. The driver has been tested with the LinkSys
USB200M adapter. I know for a fact that there are other devices out
there with this chip but don't have all the USB vendor/device IDs.

Note: I'm not sure if this will force the driver to end up in the
install kernel image or not. Special magic needs to be done to exclude
it to keep the boot floppies from bloating again, someone please
advise.

2 files changed, 145 insertions, 0 deletions

diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index 6d8eed0..3d8fba4 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -20,6 +20,7 @@ MAN=	aac.4 \
 	atkbdc.4 \
 	aue.4 \
 	awi.4 \
+	axe.4 \
 	bge.4 \
 	bktr.4 \
 	blackhole.4 \
diff --git a/share/man/man4/axe.4 b/share/man/man4/axe.4
new file mode 100644
index 0000000..9113c28
--- /dev/null
+++ b/share/man/man4/axe.4
@@ -0,0 +1,144 @@
+.\" Copyright (c) 1997, 1998, 1999, 2000-2003
+.\"	Bill Paul <wpaul@windriver.com>. 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. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by Bill Paul.
+.\" 4. Neither the name of the author nor the names of any co-contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"   without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
+.\" 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 April 20, 2003
+.Dt AXE 4
+.Os
+.Sh NAME
+.Nm axe
+.Nd ASIX Electronics AX88172 USB Ethernet driver
+.Sh SYNOPSIS
+.Cd "device ehci"
+.Cd "device uhci"
+.Cd "device ohci"
+.Cd "device usb"
+.Cd "device miibus"
+.Cd "device axe"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for USB ethernet adapters based on the ASIX
+Electronics AX88172 USB 2.0 chipset, including the LinkSys USB200M.
+.Pp
+The AX88172 is a USB 2.0 device which  contains a 10/100
+ethernet MAC with MII interface and is designed to work with both
+ethernet and HomePNA transceivers. The AX88172 will operate with
+both USB 1.x and USB 2.0 controllers, however performace with 1.x
+contollers will be limited since the USB 1.x standard specifies a
+maximum transfer speed of 12Mbps. 
+Users with USB 1.x controllers should therefore not expect to actually
+achieve 100Mbps speeds with these devices.
+.Pp
+The AX88172 supports a 64-bit multicast hash table, single perfect
+filter entry for the station address, all-multicast mode and promiscuous mode.
+Packets are
+received and transmitted over separate USB bulk transfer endpoints.
+.Pp
+The
+.Nm
+driver supports the following media types:
+.Pp
+.Bl -tag -width xxxxxxxxxxxxxxxxxxxx
+.It autoselect
+Enable autoselection of the media type and options.
+The user can manually override
+the autoselected mode by adding media options to the
+.Pa /etc/rc.conf
+file.
+.It 10baseT/UTP
+Set 10Mbps operation.
+The
+.Ar mediaopt
+option can also be used to enable
+.Ar full-duplex
+operation.
+Not specifying
+.Ar full duplex
+implies
+.Ar half-duplex
+mode.
+.It 100baseTX
+Set 100Mbps (fast ethernet) operation.
+The
+.Ar mediaopt
+option can also be used to enable
+.Ar full-duplex
+operation.
+Not specifying
+.Ar full duplex
+implies
+.Ar half-duplex
+mode.
+.El
+.Pp
+The
+.Nm
+driver supports the following media options:
+.Pp
+.Bl -tag -width xxxxxxxxxxxxxxxxxxxx
+.It full-duplex
+Force full duplex operation.
+The interface will operate in
+half duplex mode if this media option is not specified.
+.El
+.Pp
+For more information on configuring this device, see
+.Xr ifconfig 8 .
+.Sh DIAGNOSTICS
+.Bl -diag
+.It "axe%d: watchdog timeout"
+A packet was queued for transmission and a transmit command was
+issued, however the device failed to acknowledge the transmission
+before a timeout expired.
+.It "axe%d: no memory for rx list"
+The driver failed to allocate an mbuf for the receiver ring.
+.El
+.Sh SEE ALSO
+.Xr arp 4 ,
+.Xr miibus 4 ,
+.Xr netintro 4 ,
+.Xr ng_ether 4 ,
+.Xr ifconfig 8
+.Rs
+.%T ASIX AX88172 data sheet
+.%O http://www.asix.com.tw
+.Re
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Fx 5.0 .
+.Sh AUTHORS
+The
+.Nm
+driver was written by
+.An Bill Paul Aq wpaul@windriver.com .