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-<table class="head">
- <tr>
- <td class="head-ltitle">BWN(4)</td>
- <td class="head-vol">Device Drivers Manual</td>
- <td class="head-rtitle">BWN(4)</td>
- </tr>
-</table>
-<div class="manual-text">
-<section class="Sh">
-<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-<p class="Pp"><code class="Nm">bwn</code> &#x2014; <span class="Nd">Broadcom
- BCM43xx SoftMAC IEEE 802.11 wireless network driver</span></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
-<p class="Pp">To compile this driver into the kernel, add the following lines to
- the kernel configuration file:</p>
-<div class="Bd Pp Bd-indent"><code class="Cd">device bwn</code>
-<br/>
-<code class="Cd">device bhnd</code>
-<br/>
-<code class="Cd">device bhndb</code>
-<br/>
-<code class="Cd">device bhndb_pci</code>
-<br/>
-<code class="Cd">device bcma</code>
-<br/>
-<code class="Cd">device siba</code>
-<br/>
-<code class="Cd">device gpio</code>
-<br/>
-<code class="Cd">device wlan</code>
-<br/>
-<code class="Cd">device wlan_amrr</code>
-<br/>
-<code class="Cd">device firmware</code></div>
-<p class="Pp">To load the driver as a module at boot, add the following lines to
- <a class="Xr">loader.conf(5)</a>:</p>
-<div class="Bd Pp Bd-indent Li">
-<pre>if_bwn_load=&quot;YES&quot;</pre>
-</div>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
-<p class="Pp">The <code class="Nm">bwn</code> driver provides support for
- Broadcom BCM43xx based PCI/CardBus network adapters.</p>
-<p class="Pp">It supports <code class="Cm">station</code> and
- <code class="Cm">monitor</code> mode operation. Only one virtual interface
- may be configured at any time. For more information on configuring this
- device, see <a class="Xr">ifconfig(8)</a>.</p>
-<p class="Pp">This driver requires firmware to be loaded before it will work.
- The <span class="Pa">ports/net/bwn-firmware-kmod</span> port needs to be
- installed before <a class="Xr">ifconfig(8)</a> will work. In most cases the
- <span class="Pa">bwn_v4_ucode</span> kernel module from the port should be
- used. However, if an LP (low power) PHY is being used, the
- <span class="Pa">bwn_v4_lp_ucode</span> module should be used.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="HARDWARE"><a class="permalink" href="#HARDWARE">HARDWARE</a></h1>
-<p class="Pp">The <code class="Nm">bwn</code> driver supports Broadcom BCM43xx
- based wireless devices, including:</p>
-<table class="Bl-column">
- <tr id="Card">
- <td><a class="permalink" href="#Card"><i class="Em">Card</i></a></td>
- <td><a class="permalink" href="#Chip"><i class="Em" id="Chip">Chip</i></a></td>
- <td><a class="permalink" href="#Bus"><i class="Em" id="Bus">Bus</i></a></td>
- <td><a class="permalink" href="#Standard"><i class="Em" id="Standard">Standard</i></a></td>
- </tr>
- <tr>
- <td>Apple Airport Extreme</td>
- <td>BCM4318</td>
- <td>PCI</td>
- <td>b/g</td>
- </tr>
- <tr>
- <td>ASUS WL-138g</td>
- <td>BCM4318</td>
- <td>PCI</td>
- <td>b/g</td>
- </tr>
- <tr>
- <td>Buffalo WLI-CB-G54S</td>
- <td>BCM4318</td>
- <td>CardBus</td>
- <td>b/g</td>
- </tr>
- <tr>
- <td>Dell Wireless 1390</td>
- <td>BCM4311</td>
- <td>Mini PCI</td>
- <td>b/g</td>
- </tr>
- <tr>
- <td>Dell Wireless 1470</td>
- <td>BCM4318</td>
- <td>Mini PCI</td>
- <td>b/g</td>
- </tr>
- <tr>
- <td>Dell Truemobile 1400</td>
- <td>BCM4309</td>
- <td>Mini PCI</td>
- <td>b/g</td>
- </tr>
- <tr>
- <td>HP Compaq 6715b</td>
- <td>BCM4312</td>
- <td>PCI</td>
- <td>b/g</td>
- </tr>
- <tr>
- <td>HP nx6125</td>
- <td>BCM4319</td>
- <td>PCI</td>
- <td>b/g</td>
- </tr>
- <tr>
- <td>Linksys WPC54G Ver 3</td>
- <td>BCM4318</td>
- <td>CardBus</td>
- <td>b/g</td>
- </tr>
- <tr>
- <td>Linksys WPC54GS Ver 2</td>
- <td>BCM4318</td>
- <td>CardBus</td>
- <td>b/g</td>
- </tr>
- <tr>
- <td>US Robotics 5411</td>
- <td>BCM4318</td>
- <td>CardBus</td>
- <td>b/g</td>
- </tr>
-</table>
-<p class="Pp">Users of older Broadcom chipsets (BCM4301, BCM4303 and BCM4306 rev
- 2) must use <a class="Xr">bwi(4)</a> because the v4 version of the firmware
- does not support these chips. The newer firmware is too big to fit into
- these old chips.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1>
-<p class="Pp">Join an existing BSS network (i.e., connect to an access
- point):</p>
-<div class="Bd Pp Bd-indent Li">
-<pre>ifconfig wlan create wlandev bwn0 inet 192.168.0.20 \
- netmask 0xffffff00</pre>
-</div>
-<p class="Pp">Join a specific BSS network with network name
- &#x201C;<code class="Li">my_net</code>&#x201D;:</p>
-<p class="Pp"></p>
-<div class="Bd Bd-indent"><code class="Li">ifconfig wlan create wlandev bwn0
- ssid my_net up</code></div>
-<p class="Pp">Join a specific BSS network with 64-bit WEP encryption:</p>
-<div class="Bd Pp Bd-indent Li">
-<pre>ifconfig wlan create wlandev bwn0 ssid my_net \
- wepmode on wepkey 0x1234567890 weptxkey 1 up</pre>
-</div>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="LOADER_TUNABLES"><a class="permalink" href="#LOADER_TUNABLES">LOADER
- TUNABLES</a></h1>
-<p class="Pp">Tunables can be set at the <a class="Xr">loader(8)</a> prompt
- before booting the kernel or stored in <a class="Xr">loader.conf(5)</a>.</p>
-<dl class="Bl-tag">
- <dt id="hw.bwn.usedma"><var class="Va">hw.bwn.usedma</var></dt>
- <dd>This tunable enables DMA operations on the hardware. If the value is 0,
- PIO mode would be used. The default value is 1.</dd>
-</dl>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
- ALSO</a></h1>
-<p class="Pp"><a class="Xr">arp(4)</a>, <a class="Xr">bcma(4)</a>,
- <a class="Xr">bhnd(4)</a>, <a class="Xr">bhndb(4)</a>,
- <a class="Xr">bwi(4)</a>, <a class="Xr">cardbus(4)</a>,
- <a class="Xr">intro(4)</a>, <a class="Xr">pci(4)</a>,
- <a class="Xr">siba(4)</a>, <a class="Xr">wlan(4)</a>,
- <a class="Xr">wlan_amrr(4)</a>, <a class="Xr">ifconfig(8)</a>,
- <a class="Xr">wpa_supplicant(8)</a></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
-<p class="Pp">The <code class="Nm">bwn</code> driver first appeared in
- <span class="Ux">FreeBSD 8.1</span>. The driver was updated to support the
- common Broadcom <a class="Xr">bhnd(4)</a> bus interface in
- <span class="Ux">FreeBSD 12.0</span>.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
-<p class="Pp">The <code class="Nm">bwn</code> driver was written by
- <span class="An">Weongyo Jeong</span>
- &lt;<a class="Mt" href="mailto:weongyo@FreeBSD.org">weongyo@FreeBSD.org</a>&gt;.
- Support for <a class="Xr">bhnd(4)</a> was added by <span class="An">Landon
- Fuller</span>
- &lt;<a class="Mt" href="mailto:landonf@FreeBSD.org">landonf@FreeBSD.org</a>&gt;.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="CAVEATS"><a class="permalink" href="#CAVEATS">CAVEATS</a></h1>
-<p class="Pp">Some LP PHY devices have DMA operation problems that in that case
- try to use PIO mode.</p>
-</section>
-</div>
-<table class="foot">
- <tr>
- <td class="foot-date">December 16, 2017</td>
- <td class="foot-os">FreeBSD 15.0</td>
- </tr>
-</table>