BWI(4)

NAME
bwi - Broadcom BCM430x/4318 IEEE 802.11b/g wireless network driver

SYNOPSIS
bwi* at pci? dev ? function ?
bwi* at cardbus? function ?

DESCRIPTION
The bwi driver provides support for Broadcom BCM430x/4318 wireless network adapters. For more information on configuring this device, see ifconfig(8).

  MIB Variables
The following per-interface variables are implemented in the hw.bwiX branch of the sysctl(3) MIB.

debug
    Debug flags.

dwell_time
    Channel dwell time during scan (msec).

fw_version
    Firmware version.

led_idle
    Number of ticks before LED enters idle state.

led_blink
    Allow LED to blink.

txpwr_calib
    Enable software TX power calibration.

HARDWARE
The following cards are among those supported by the bwi driver:

Card | Chip | Bus | Standard
Buffalo WLI-CB-G54 BCM4306 CardBus b/g
Buffalo WLI3-CB-G54L BCM4318 CardBus b/g
Buffalo WLI-PCI-G54S BCM4306 PCI b/g
Dell Wireless 1370 BCM4318 Mini PCI b/g
Dell Wireless 1470 BCM4318 Mini PCI b/g
Dell Truemobile 1400 BCM4309 Mini PCI b/g
Dell Latitude D505 BCM4306 PCI b/g
Apple AirPort Extreme b/g

FILES
The firmware for the adapter is not shipped with NetBSD and must be obtained separately. An archive with firmware files that are known to work can be found at:

    http://leaf.dragonflybsd.org/~sephe/bwi/v3.tbz

The firmware files conventionally reside in /libdata/firmware/bwi and will be loaded when the interface is brought up. Note: the v3 subdirectory in the above firmware archive should exist in the firmware folder. The full list of paths checked for firmware can be found in the hw.firmware.path sysctl(3) node.

SEE ALSO
arp(4), cardbus(4), ifmedia(4), pci(4), ifconfig(8), sysctl(8), wiconfig(8), wpa_supplicant(8)

HISTORY
The bwi driver first appeared in NetBSD 6.0.

AUTHORS
-nosplit The bwi driver was written by Sepherosa Ziehau for Dragonfly BSD. It was ported to NetBSD by Taylor R. Campbell <riastradh@NetBSD.org>.

The hardware specification was reverse engineered by the people at http://bcm-specs.sipsolutions.net. Thanks go also to johill and mb on the #bcm-specs channel.

BUGS
BCM4306 and BCM4309 chips do not work properly on channel 1, 2, and 3.