1.\" Copyright (c) 2009 Christian Brueffer 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD: head/share/man/man4/bwn.4 233992 2012-04-07 09:05:30Z joel $ 26.\" 27.Dd April 5, 2014 28.Dt BWN 4 29.Os 30.Sh NAME 31.Nm bwn 32.Nd Broadcom BCM43xx IEEE 802.11b/g wireless network driver 33.Sh SYNOPSIS 34To compile this driver into the kernel, 35place the following lines in your 36kernel configuration file: 37.Bd -ragged -offset indent 38.Cd "device siba_bwn" 39.Cd "device bwn" 40.Cd "device wlan" 41.Cd "device wlan_amrr" 42.Ed 43.Pp 44Alternatively, to load the driver as a 45module at boot time, place the following line in 46.Xr loader.conf 5 : 47.Bd -literal -offset indent 48if_bwn_load="YES" 49.Ed 50.Sh DESCRIPTION 51The 52.Nm 53driver provides support for Broadcom BCM43xx based 54PCI/CardBus network adapters. 55.Pp 56It supports 57.Cm station 58and 59.Cm monitor 60mode operation. 61Only one virtual interface may be configured at any time. 62For more information on configuring this device, see 63.Xr ifconfig 8 . 64.Pp 65This driver requires firmware to be loaded before it will work. 66The 67.Pa dports/net/bwn-firmware-kmod 68port needs to be installed before 69.Xr ifconfig 8 70will work. 71In most cases you need to use the bwn_v4_ucode module but if you are a 72LP (low power) PHY user please use the bwn_v4_lp_ucode module. 73.Sh HARDWARE 74The 75.Nm 76driver supports Broadcom BCM43xx based wireless devices, including: 77.Bl -column "Apple Airport Extreme" "BCM4306" "Mini PCI" "a/b/g" 78.It Em "Card" Ta Em "Chip" Ta Em "Bus" Ta Em "Standard" 79.It "Apple Airport Extreme BCM4318 PCI b/g" 80.It "ASUS WL-138g BCM4318 PCI b/g" 81.It "Buffalo WLI-CB-G54S BCM4318 CardBus b/g" 82.It "Dell Wireless 1390 BCM4311 Mini PCI b/g" 83.It "Dell Wireless 1470 BCM4318 Mini PCI b/g" 84.It "Dell Truemobile 1400 BCM4309 Mini PCI b/g" 85.It "HP Compaq 6715b BCM4312 PCI b/g" 86.It "HP nx6125 BCM4319 PCI b/g" 87.It "Linksys WPC54G Ver 3 BCM4318 CardBus b/g" 88.It "Linksys WPC54GS Ver 2 BCM4318 CardBus b/g" 89.It "US Robotics 5411 BCM4318 CardBus b/g" 90.El 91.\".Pp 92.\"Users of older Broadcom chipsets (BCM4301, BCM4303 and BCM4306 rev 2) 93.\"must use 94.\".Xr bwi 4 95.\"because the v4 version of the firmware does not support these chips. 96.\"The newer firmware is too big to fit into these old chips. 97.Sh EXAMPLES 98Join an existing BSS network (i.e., connect to an access point): 99.Bd -literal -offset indent 100ifconfig wlan create wlandev bwn0 inet 192.168.0.20 \e 101 netmask 0xffffff00 102.Ed 103.Pp 104Join a specific BSS network with network name 105.Dq Li my_net : 106.Pp 107.Dl "ifconfig wlan create wlandev bwn0 ssid my_net up" 108.Pp 109Join a specific BSS network with 64-bit WEP encryption: 110.Bd -literal -offset indent 111ifconfig wlan create wlandev bwn0 ssid my_net \e 112 wepmode on wepkey 0x1234567890 weptxkey 1 up 113.Ed 114.Sh LOADER TUNABLES 115Tunables can be set at the 116.Xr loader 8 117prompt before booting the kernel or stored in 118.Xr loader.conf 5 . 119.Bl -tag -width indent 120.It Va hw.bwn.msi.enable 121By default, the driver will use MSI if it is supported. 122This behavior can be turned off by setting this tunable to 0. 123.It Va hw.bwn.usedma 124This tunable enables DMA operations on the hardware. 125If the value is 0, PIO mode would be used. 126The default value is 1. 127.El 128.Sh SEE ALSO 129.Xr arp 4 , 130.\".Xr bwi 4 , 131.Xr cardbus 4 , 132.Xr ifmedia 4 , 133.Xr intro 4 , 134.Xr pci 4 , 135.Xr wlan 4 , 136.Xr wlan_amrr 4 , 137.Xr ifconfig 8 , 138.Xr wpa_supplicant 8 139.Sh HISTORY 140The 141.Nm 142driver first appeared in 143.Fx 8.1 . 144.Sh AUTHORS 145.An -nosplit 146The 147.Nm 148driver was written by 149.An Weongyo Jeong Aq Mt weongyo@FreeBSD.org . 150.\".Sh BUGS 151.\"Some card based on the BCM4306 and BCM4309 chips do not work properly 152.\"on channel 1, 2 and 3. 153.Sh CAVEATS 154Some LP PHY devices have DMA operation problems. 155In that case try to use the PIO mode. 156