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.\" $FreeBSD$ 26.\" 27.Dd September 14, 2010 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.Cd "device firmware" 43.Ed 44.Pp 45Alternatively, to load the driver as a 46module at boot time, place the following line in 47.Xr loader.conf 5 : 48.Bd -literal -offset indent 49if_bwn_load="YES" 50.Ed 51.Sh DESCRIPTION 52The 53.Nm 54driver provides support for Broadcom BCM43xx based 55PCI/CardBus network adapters. 56.Pp 57It supports 58.Cm station 59and 60.Cm monitor 61mode operation. 62Only one virtual interface may be configured at any time. 63For more information on configuring this device, see 64.Xr ifconfig 8 . 65.Pp 66This driver requires firmware to be loaded before it will work. 67The 68.Pa ports/net/bwn-firmware-kmod 69port needs to be installed before 70.Xr ifconfig 8 71will work. 72Most cases you need to use bwn_v4_ucode module but if you are a 73LP (low power) PHY user please uses bwn_v4_lp_ucode module. 74.Sh HARDWARE 75The 76.Nm 77driver supports Broadcom BCM43xx based wireless devices, including: 78.Pp 79.Bl -column -compact "Apple Airport Extreme" "BCM4306" "Mini PCI" "a/b/g" -offset 6n 80.It Em "Card Chip Bus Standard" 81.It "Apple Airport Extreme BCM4306 PCI b/g" 82.It "Apple Airport Extreme BCM4318 PCI b/g" 83.It "ASUS WL-138g BCM4318 PCI b/g" 84.It "Buffalo WLI-CB-G54S BCM4318 CardBus b/g" 85.It "Buffalo WLI-PCI-G54S BCM4306 PCI b/g" 86.It "Compaq R4035 onboard BCM4306 PCI b/g" 87.It "Dell Wireless 1470 BCM4318 Mini PCI b/g" 88.It "Dell Truemobile 1400 BCM4309 Mini PCI b/g" 89.It "HP nx6125 BCM4319 PCI b/g" 90.It "Linksys WPC54G Ver 3 BCM4318 CardBus b/g" 91.It "Linksys WPC54GS Ver 2 BCM4318 CardBus b/g" 92.It "TRENDnet TEW-401PCplus BCM4306 CardBus b/g" 93.It "US Robotics 5411 BCM4318 CardBus b/g" 94.El 95.Pp 96Users of older Broadcom chipsets (BCM4301, BCM4303 and BCM4306 rev 2) 97must use 98.Xr bwi 4 99because the v4 version of the firmware does not support these chips. 100The newer firmware is too big to fit into these old chips. 101.Sh EXAMPLES 102Join an existing BSS network (i.e., connect to an access point): 103.Pp 104.Bd -literal -offset indent 105ifconfig wlan create wlandev bwn0 inet 192.168.0.20 \e 106 netmask 0xffffff00 107.Ed 108.Pp 109Join a specific BSS network with network name 110.Dq Li my_net : 111.Pp 112.Dl "ifconfig wlan create wlandev bwn0 ssid my_net up" 113.Pp 114Join a specific BSS network with 64-bit WEP encryption: 115.Bd -literal -offset indent 116ifconfig wlan create wlandev bwn0 ssid my_net \e 117 wepmode on wepkey 0x1234567890 weptxkey 1 up 118.Ed 119.Sh LOADER TUNABLES 120Tunables can be set at the 121.Xr loader 8 122prompt before booting the kernel or stored in 123.Xr loader.conf 5 . 124.Bl -tag -width indent 125.It Va hw.bwn.msi_disable 126This tunable disables MSI support on the hardware. 127The default value is 0. 128.It Va hw.bwn.usedma 129This tunable enables DMA operations on the hardware. 130If the value is 0, PIO mode would be used. 131The default value is 1. 132.El 133.Sh SEE ALSO 134.Xr arp 4 , 135.Xr bwi 4 , 136.Xr cardbus 4 , 137.Xr intro 4 , 138.Xr pci 4 , 139.Xr wlan 4 , 140.Xr wlan_amrr 4 , 141.Xr ifconfig 8 , 142.Xr wpa_supplicant 8 143.Sh HISTORY 144The 145.Nm 146driver first appeared in 147.Fx 8.1 . 148.Sh CAVEATS 149Some LP PHY devices have DMA operation problems that in that case try to 150use PIO mode. 151.Sh AUTHORS 152.An -nosplit 153The 154.Nm 155driver was written by 156.An Weongyo Jeong 157.Aq weongyo@FreeBSD.org . 158.\".Sh BUGS 159.\"Some card based on the BCM4306 and BCM4309 chips do not work properly 160.\"on channel 1, 2 and 3. 161