1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
.\" Copyright (c) 2009 Christian Brueffer
.\" 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, 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 December 16, 2017
.Dt BWN 4
.Os
.Sh NAME
.Nm bwn
.Nd Broadcom BCM43xx SoftMAC IEEE 802.11 wireless network driver
.Sh SYNOPSIS
To compile this driver into the kernel, add the following lines to the kernel
configuration file:
.Bd -ragged -offset indent
.Cd "device bwn"
.Cd "device bhnd"
.Cd "device bhndb"
.Cd "device bhndb_pci"
.Cd "device bcma"
.Cd "device siba"
.Cd "device gpio"
.Cd "device wlan"
.Cd "device wlan_amrr"
.Cd "device firmware"
.Ed
.Pp
To load the driver as a module at boot, add the following lines to
.Xr loader.conf 5 :
.Bd -literal -offset indent
if_bwn_load="YES"
.Ed
.Sh DESCRIPTION
The
.Nm
driver provides support for Broadcom BCM43xx based
PCI/CardBus network adapters.
.Pp
It supports
.Cm station
and
.Cm monitor
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 firmware to be loaded before it will work.
The
.Pa ports/net/bwn-firmware-kmod
port needs to be installed before
.Xr ifconfig 8
will work.
In most cases the
.Pa bwn_v4_ucode
kernel module from the port should be used.
However, if an LP (low power) PHY is being used, the
.Pa bwn_v4_lp_ucode
module should be used.
.Sh HARDWARE
The
.Nm
driver supports Broadcom BCM43xx based wireless devices, including:
.Bl -column "Apple Airport Extreme" "BCM4306" "Mini PCI" "a/b/g"
.It Em "Card" Ta Em "Chip" Ta Em "Bus" Ta Em "Standard"
.It "Apple Airport Extreme BCM4318 PCI b/g"
.It "ASUS WL-138g BCM4318 PCI b/g"
.It "Buffalo WLI-CB-G54S BCM4318 CardBus b/g"
.It "Dell Wireless 1390 BCM4311 Mini PCI b/g"
.It "Dell Wireless 1470 BCM4318 Mini PCI b/g"
.It "Dell Truemobile 1400 BCM4309 Mini PCI b/g"
.It "HP Compaq 6715b BCM4312 PCI b/g"
.It "HP nx6125 BCM4319 PCI b/g"
.It "Linksys WPC54G Ver 3 BCM4318 CardBus b/g"
.It "Linksys WPC54GS Ver 2 BCM4318 CardBus b/g"
.It "US Robotics 5411 BCM4318 CardBus b/g"
.El
.Pp
Users of older Broadcom chipsets (BCM4301, BCM4303 and BCM4306 rev 2)
must use
.Xr bwi 4
because the v4 version of the firmware does not support these chips.
The newer firmware is too big to fit into these old chips.
.Sh EXAMPLES
Join an existing BSS network (i.e., connect to an access point):
.Bd -literal -offset indent
ifconfig wlan create wlandev bwn0 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 bwn0 ssid my_net up"
.Pp
Join a specific BSS network with 64-bit WEP encryption:
.Bd -literal -offset indent
ifconfig wlan create wlandev bwn0 ssid my_net \e
wepmode on wepkey 0x1234567890 weptxkey 1 up
.Ed
.Sh LOADER TUNABLES
Tunables can be set at the
.Xr loader 8
prompt before booting the kernel or stored in
.Xr loader.conf 5 .
.Bl -tag -width indent
.It Va hw.bwn.usedma
This tunable enables DMA operations on the hardware.
If the value is 0, PIO mode would be used.
The default value is 1.
.El
.Sh SEE ALSO
.Xr arp 4 ,
.Xr bcma 4 ,
.Xr bhnd 4 ,
.Xr bhndb 4 ,
.Xr bwi 4 ,
.Xr cardbus 4 ,
.Xr intro 4 ,
.Xr pci 4 ,
.Xr siba 4 ,
.Xr wlan 4 ,
.Xr wlan_amrr 4 ,
.Xr ifconfig 8 ,
.Xr wpa_supplicant 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Fx 8.1 .
The driver was updated to support the common Broadcom
.Xr bhnd 4
bus interface in
.Fx 12.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Weongyo Jeong Aq Mt weongyo@FreeBSD.org .
Support for
.Xr bhnd 4
was added by
.An Landon Fuller Aq Mt landonf@FreeBSD.org .
.\".Sh BUGS
.\"Some card based on the BCM4306 and BCM4309 chips do not work properly
.\"on channel 1, 2 and 3.
.Sh CAVEATS
Some LP PHY devices have DMA operation problems that in that case try to
use PIO mode.
|
