BWI(4)							   BSD Kernel Interfaces Manual 						    BWI(4)

NAME

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

SYNOPSIS

     bwi* at pci? dev ? 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-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 subdi-
     rectory 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), 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 <campbell@mumble.net>.

     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.

     The NetBSD driver does not yet support cardbus devices.

BSD
								  March 24, 2009							       BSD