BWI(4)                  NetBSD Kernel Interfaces Manual                 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 net- work 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 subdirec- tory 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
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. NetBSD 9.0 April 25, 2012 NetBSD 9.0

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