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<table class="head">
<tr>
<td class="head-ltitle">CAS(4)</td>
<td class="head-vol">Device Drivers Manual</td>
<td class="head-rtitle">CAS(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">cas</code> — <span class="Nd">Sun
Cassini/Cassini+ and National Semiconductor DP83065 Saturn Gigabit Ethernet
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, place the following lines
in your kernel configuration file:</p>
<div class="Bd Pp Bd-indent"><code class="Cd">device miibus</code>
<br/>
<code class="Cd">device cas</code></div>
<p class="Pp">Alternatively, to load the driver as a module at boot time, place
the following line in <a class="Xr">loader.conf(5)</a>:</p>
<div class="Bd Pp Bd-indent Li">
<pre>if_cas_load="YES"</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">cas</code> driver provides support for the
Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn Gigabit
Ethernet controllers.</p>
<p class="Pp">All controllers supported by the <code class="Nm">cas</code>
driver have TCP/UDP checksum offload capability for both receive and
transmit, support for the reception and transmission of extended frames for
<a class="Xr">vlan(4)</a> and an interrupt coalescing/moderation mechanism
as well as a 512-bit multicast hash filter.</p>
<p class="Pp">The <code class="Nm">cas</code> driver also supports Jumbo Frames
(up to 9022 bytes), which can be configured via the interface MTU setting.
Selecting an MTU larger than 1500 bytes with the
<a class="Xr">ifconfig(8)</a> utility configures the adapter to receive and
transmit Jumbo Frames.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="HARDWARE"><a class="permalink" href="#HARDWARE">HARDWARE</a></h1>
<p class="Pp">The chips supported by the <code class="Nm">cas</code> driver
are:</p>
<p class="Pp"></p>
<ul class="Bl-bullet Bl-compact">
<li>National Semiconductor DP83065 Saturn Gigabit Ethernet</li>
<li>Sun Cassini Gigabit Ethernet</li>
<li>Sun Cassini+ Gigabit Ethernet</li>
</ul>
<p class="Pp">The following add-on cards are known to work with the
<code class="Nm">cas</code> driver at this time:</p>
<p class="Pp"></p>
<ul class="Bl-bullet Bl-compact">
<li>Sun GigaSwift Ethernet 1.0 MMF (Cassini Kuheen) (part no. 501-5524)</li>
<li>Sun GigaSwift Ethernet 1.0 UTP (Cassini) (part no. 501-5902)</li>
<li>Sun GigaSwift Ethernet UTP (GCS) (part no. 501-6719)</li>
<li>Sun Quad GigaSwift Ethernet UTP (QGE) (part no. 501-6522)</li>
<li>Sun Quad GigaSwift Ethernet PCI-X (QGE-X) (part no. 501-6738)</li>
</ul>
</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">altq(4)</a>, <a class="Xr">miibus(4)</a>,
<a class="Xr">netintro(4)</a>, <a class="Xr">vlan(4)</a>,
<a class="Xr">ifconfig(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">cas</code> device driver appeared in
<span class="Ux">FreeBSD 8.0</span> and <span class="Ux">FreeBSD 7.3</span>.
It is named after the <code class="Nm">cas</code> driver which first
appeared in <span class="Ux">OpenBSD 4.1</span> and supports the same set of
controllers but is otherwise unrelated.</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">cas</code> driver was written by
<span class="An">Marius Strobl</span>
<<a class="Mt" href="mailto:marius@FreeBSD.org">marius@FreeBSD.org</a>>
based on the <a class="Xr">gem(4)</a> driver.</p>
</section>
</div>
<table class="foot">
<tr>
<td class="foot-date">April 18, 2023</td>
<td class="foot-os">FreeBSD 15.0</td>
</tr>
</table>
|
