Add an initial driver for the AR9170 series draft-11n hardware from

Atheros.

Thanks to OpenBSD for providing a driver based on the original
Atheros open source driver circa 2008.  This uses the early, pre-carl9170
atheros provided firmware.

It only supports 11bg at the moment.  I've not tested it with 11a
(and so the TX rate control logic may be slightly wrong!) so if
you do have the dual-band version of this hardware please do let me know.

Tested:

* AR9170, TP-Link WN821N 2GHz.

TODO:

* Hook this up to a non-module build.

sys/contrib/dev/otus/otus-license

@@ -0,0 +1,47 @@
+Copyright (c) 2008, Atheros Communications, Inc.
+All rights reserved.
+
+Redistribution.  Redistribution and use in binary form, without
+modification, are permitted provided that the following conditions are
+met:
+
+* Redistributions must reproduce the above copyright notice and the
+  following disclaimer in the documentation and/or other materials
+  provided with the distribution.
+
+* Neither the name of Atheros Communications, Inc. nor the names of
+  its suppliers may be used to endorse or promote products derived
+  from this software without specific prior written permission.
+
+* No reverse engineering, decompilation, or disassembly of this
+  software is permitted.
+
+Limited patent license.  Atheros Communications, Inc. grants a
+world-wide, royalty-free, non-exclusive license under patents it
+now or hereafter owns or controls to make, have made, use, import,
+offer to sell and sell ("Utilize") this software, but solely to
+the extent that any such patent is necessary to Utilize the software
+alone, or in combination with an operating system licensed under an
+approved Open Source license as listed by the Open Source Initiative
+at http://opensource.org/licenses.  The patent license shall not
+apply to any other combinations which include this software. No
+hardware per se is licensed hereunder.
+
+DISCLAIMER.  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.
+
+
+The following files are under this license:
+
+otus-init otus-main
+
+These files are needed by otus(4) devices.

sys/modules/Makefile

@@ -270,6 +270,8 @@ SUBDIR=	\
 	${_nxge} \
 	${_opensolaris} \
 	oce \
+	otus \
+	otusfw \
 	ow \
 	${_padlock} \
 	${_padlock_rng} \

sys/modules/otus/Makefile

@@ -0,0 +1,10 @@
+# $FreeBSD$
+
+.PATH: ${.CURDIR}/../../dev/otus
+
+KMOD    = if_otus
+SRCS    = if_otus.c if_otusreg.h	\
+	  bus_if.h device_if.h		\
+	  opt_bus.h opt_usb.h usb_if.h usbdevs.h
+
+.include <bsd.kmod.mk>

sys/modules/otusfw/Makefile

@@ -0,0 +1,5 @@
+# $FreeBSD$
+
+SUBDIR=otusfw_init otusfw_main
+
+.include <bsd.subdir.mk>

sys/modules/otusfw/otusfw_init/Makefile

@@ -0,0 +1,11 @@
+# $FreeBSD$
+
+KMOD=	otusfw_init
+FIRMWS=	otusfw_init:otusfw_init:1
+
+CLEANFILES=	otus_init
+
+otusfw_init: ${.CURDIR}/../../../contrib/dev/otus/otus-init
+	cp ${.CURDIR}/../../../contrib/dev/otus/otus-init ${.TARGET}
+
+.include <bsd.kmod.mk>

sys/modules/otusfw/otusfw_main/Makefile

@@ -0,0 +1,11 @@
+# $FreeBSD$
+
+KMOD=	otusfw_main
+FIRMWS=	otusfw_main:otusfw_main:1
+
+CLEANFILES=	otusfw_main
+
+otusfw_main: ${.CURDIR}/../../../contrib/dev/otus/otus-main
+	cp ${.CURDIR}/../../../contrib/dev/otus/otus-main ${.TARGET}
+
+.include <bsd.kmod.mk>