Import OpenBSD's iwm WiFi driver for Intel 3160/7260/7265.

There are still several bugs, but I've been using it for a while now.
Thanks to all the testers and to Adrian for his help with this
driver.

This driver isn't connected to the build yet, but it will be soon.

There's no MFC planned because the driver isn't very stable yet.

Reviewed by:	adrian
Obtained from:	https://github.com/rpaulo/iwm
Tested by:	adrian, gjb, dumbbell (others that I forgot).
Relnotes:	yes

1 files changed, 153 insertions, 0 deletions

diff --git a/share/man/man4/iwm.4 b/share/man/man4/iwm.4
new file mode 100644
index 0000000..45c0bf2
--- /dev/null
+++ b/share/man/man4/iwm.4
@@ -0,0 +1,153 @@
+.\" Copyright (c) 2004-2006
+.\"	Damien Bergamini <damien.bergamini@free.fr>. 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 unmodified, 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 July 1, 2015
+.Dt IWM 4
+.Os
+.Sh NAME
+.Nm iwm
+.Nd Intel IEEE 802.11ac wireless network driver
+.Sh SYNOPSIS
+To compile this driver into the kernel,
+include the following lines in your
+kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "device iwm"
+.Cd "device pci"
+.Cd "device wlan"
+.Cd "device firmware"
+.Ed
+.Pp
+You also need to select a firmware for your device.
+Choose one from:
+.Bd -ragged -offset indent
+.Cd "device iwm3160fw"
+.Cd "device iwm7260fw"
+.Cd "device iwm7265fw"
+.Ed
+.Pp
+Or you can use
+.Bd -ragged -offset indent
+.Cd "device iwmfw"
+.Ed
+.Pp
+to include them all.
+.Pp
+Alternatively, to load the driver as a
+module at boot time, place the following lines in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+if_iwm_load="YES"
+iwm3160fw_load="YES"
+iwm7260fw_load="YES"
+iwm7265fw_load="YES"
+.Ed
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for:
+.Pp
+.Bl -tag -width Ds -offset indent -compact
+.It Intel Dual Band Wireless AC 3160
+.It Intel Dual Band Wireless AC 7260
+.It Intel Dual Band Wireless AC 7265
+.El
+.Pp
+.Nm
+supports
+.Cm station
+mode operation.
+Only one virtual interface may be configured at any time.
+For more information on configuring this device, see
+.Xr ifconfig 8 .
+.Pp
+This driver requires the firmware built with the
+.Nm iwmfw
+module to work.
+.Sh EXAMPLES
+Join an existing BSS network (i.e., connect to an access point):
+.Bd -literal -offset indent
+ifconfig wlan create wlandev iwm0 inet 192.168.0.20 \e
+    netmask 0xffffff00
+.Ed
+.Pp
+Join a specific BSS network with network name
+.Dq Li my_net :
+.Pp
+.Dl "ifconfig wlan create wlandev iwm0 ssid my_net up"
+.Pp
+Join a specific BSS network with 64-bit WEP encryption:
+.Bd -literal -offset indent
+ifconfig wlan create wlandev iwm0 ssid my_net \e
+	wepmode on wepkey 0x1234567890 weptxkey 1 up
+.Ed
+.Pp
+Join a specific BSS network with 128-bit WEP encryption:
+.Bd -literal -offset indent
+ifconfig wlan create wlandev iwm0 wlanmode adhoc ssid my_net \e
+    wepmode on wepkey 0x01020304050607080910111213 weptxkey 1
+.Ed
+.Sh DIAGNOSTICS
+.Bl -diag
+.It "iwm%d: device timeout"
+The driver will reset the hardware.
+This should not happen.
+.It "iwm%d: firmware error"
+The onboard microcontroller crashed for some reason.
+The driver will reset the hardware.
+This should not happen.
+.It "iwm%d: timeout waiting for firmware initialization to complete"
+The onboard microcontroller failed to initialize in time.
+This should not happen.
+.It "iwm%d: could not load firmware image '%s'"
+The driver failed to load the firmware image using the
+.Xr firmware 9
+subsystem.
+Verify the
+.Xr iwmfw 4
+firmware module is present.
+.It "iwm%d: could not load boot firmware"
+An attempt to upload the boot firmware image to the onboard microcontroller
+failed.
+This should not happen.
+.It "iwm%d: could not load microcode"
+An attempt to upload the microcode image to the onboard microcontroller failed.
+This should not happen.
+.It "iwm%d: could not load main firmware"
+An attempt to upload the main firmware image to the onboard microcontroller
+failed.
+This should not happen.
+.El
+.Sh SEE ALSO
+.Xr iwmfw 4 ,
+.Xr pci 4 ,
+.Xr wlan 4 ,
+.Xr wlan_ccmp 4 ,
+.Xr wlan_tkip 4 ,
+.Xr wlan_wep 4 ,
+.Xr ifconfig 8 ,
+.Xr wpa_supplicant 8