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 December 16, 2017 28.Dt BWN 4 29.Os 30.Sh NAME 31.Nm bwn 32.Nd Broadcom BCM43xx SoftMAC IEEE 802.11 wireless network driver 33.Sh SYNOPSIS 34To compile this driver into the kernel, add the following lines to the kernel 35configuration file: 36.Bd -ragged -offset indent 37.Cd "device bwn" 38.Cd "device bhnd" 39.Cd "device bhndb" 40.Cd "device bhndb_pci" 41.Cd "device bcma" 42.Cd "device siba" 43.Cd "device gpio" 44.Cd "device wlan" 45.Cd "device wlan_amrr" 46.Cd "device firmware" 47.Ed 48.Pp 49To load the driver as a module at boot, add the following lines to 50.Xr loader.conf 5 : 51.Bd -literal -offset indent 52if_bwn_load="YES" 53.Ed 54.Sh DESCRIPTION 55The 56.Nm 57driver provides support for Broadcom BCM43xx based 58PCI/CardBus network adapters. 59.Pp 60It supports 61.Cm station 62and 63.Cm monitor 64mode operation. 65Only one virtual interface may be configured at any time. 66For more information on configuring this device, see 67.Xr ifconfig 8 . 68.Pp 69This driver requires firmware to be loaded before it will work. 70The 71.Pa ports/net/bwn-firmware-kmod 72port needs to be installed before 73.Xr ifconfig 8 74will work. 75In most cases the 76.Pa bwn_v4_ucode 77kernel module from the port should be used. 78However, if an LP (low power) PHY is being used, the 79.Pa bwn_v4_lp_ucode 80module should be used. 81.Sh HARDWARE 82The 83.Nm 84driver supports Broadcom BCM43xx based wireless devices, including: 85.Bl -column "Apple Airport Extreme" "BCM4306" "Mini PCI" "a/b/g" 86.It Em "Card" Ta Em "Chip" Ta Em "Bus" Ta Em "Standard" 87.It "Apple Airport Extreme BCM4318 PCI b/g" 88.It "ASUS WL-138g BCM4318 PCI b/g" 89.It "Buffalo WLI-CB-G54S BCM4318 CardBus b/g" 90.It "Dell Wireless 1390 BCM4311 Mini PCI b/g" 91.It "Dell Wireless 1470 BCM4318 Mini PCI b/g" 92.It "Dell Truemobile 1400 BCM4309 Mini PCI b/g" 93.It "HP Compaq 6715b BCM4312 PCI b/g" 94.It "HP nx6125 BCM4319 PCI b/g" 95.It "Linksys WPC54G Ver 3 BCM4318 CardBus b/g" 96.It "Linksys WPC54GS Ver 2 BCM4318 CardBus b/g" 97.It "US Robotics 5411 BCM4318 CardBus b/g" 98.El 99.Pp 100Users of older Broadcom chipsets (BCM4301, BCM4303 and BCM4306 rev 2) 101must use 102.Xr bwi 4 103because the v4 version of the firmware does not support these chips. 104The newer firmware is too big to fit into these old chips. 105.Sh EXAMPLES 106Join an existing BSS network (i.e., connect to an access point): 107.Bd -literal -offset indent 108ifconfig wlan create wlandev bwn0 inet 192.168.0.20 \e 109 netmask 0xffffff00 110.Ed 111.Pp 112Join a specific BSS network with network name 113.Dq Li my_net : 114.Pp 115.Dl "ifconfig wlan create wlandev bwn0 ssid my_net up" 116.Pp 117Join a specific BSS network with 64-bit WEP encryption: 118.Bd -literal -offset indent 119ifconfig wlan create wlandev bwn0 ssid my_net \e 120 wepmode on wepkey 0x1234567890 weptxkey 1 up 121.Ed 122.Sh LOADER TUNABLES 123Tunables can be set at the 124.Xr loader 8 125prompt before booting the kernel or stored in 126.Xr loader.conf 5 . 127.Bl -tag -width indent 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 bcma 4 , 136.Xr bhnd 4 , 137.Xr bhndb 4 , 138.Xr bwi 4 , 139.Xr cardbus 4 , 140.Xr intro 4 , 141.Xr pci 4 , 142.Xr siba 4 , 143.Xr wlan 4 , 144.Xr wlan_amrr 4 , 145.Xr ifconfig 8 , 146.Xr wpa_supplicant 8 147.Sh HISTORY 148The 149.Nm 150driver first appeared in 151.Fx 8.1 . 152The driver was updated to support the common Broadcom 153.Xr bhnd 4 154bus interface in 155.Fx 12.0 . 156.Sh AUTHORS 157.An -nosplit 158The 159.Nm 160driver was written by 161.An Weongyo Jeong Aq Mt weongyo@FreeBSD.org . 162Support for 163.Xr bhnd 4 164was added by 165.An Landon Fuller Aq Mt landonf@FreeBSD.org . 166.\".Sh BUGS 167.\"Some card based on the BCM4306 and BCM4309 chips do not work properly 168.\"on channel 1, 2 and 3. 169.Sh CAVEATS 170Some LP PHY devices have DMA operation problems that in that case try to 171use PIO mode. 172