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<table class="head">
<tr>
<td class="head-ltitle">TWS(4)</td>
<td class="head-vol">Device Drivers Manual</td>
<td class="head-rtitle">TWS(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">tws</code> — <span class="Nd">3ware 9750
SATA+SAS 6Gb/s RAID controller card 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 scbus</code>
<br/>
<code class="Cd">device tws</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>tws_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">tws</code> driver provides support for LSI's
3ware 9750 SATA+SAS 6Gb/s RAID controller cards.</p>
<p class="Pp">These controllers feature the LSISAS2108 6Gb/s SAS RAID-on-Chip
(ROC) and are available in 4- and 8-port configurations, supports RAID
levels 0, 1, 5, 6, 10, 50 and single disk, with 96 SATA and/or SAS hard
drives and SSDs.</p>
<p class="Pp">For further hardware information, see
<span class="Pa">http://www.lsi.com/.</span></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">tws</code> driver supports the following
SATA/SAS RAID controller:</p>
<p class="Pp"></p>
<ul class="Bl-bullet Bl-compact">
<li>LSI's 3ware SAS 9750 series</li>
</ul>
</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.tws.cam_depth"><var class="Va">hw.tws.cam_depth</var></dt>
<dd>The maximum queued CAM SIM requests for one controller. The default value
is 256.</dd>
<dt id="hw.tws.enable_msi"><var class="Va">hw.tws.enable_msi</var></dt>
<dd>This tunable enables MSI support on the controller if set to a non-zero
value. The default value is 0.</dd>
<dt id="hw.tws.queue_depth"><var class="Va">hw.tws.queue_depth</var></dt>
<dd>The maximum queued requests for one controller.</dd>
<dt id="hw.tws.use_32bit_sgls"><var class="Va">hw.tws.use_32bit_sgls</var></dt>
<dd>Limit the driver to use only 32-bit SG elements regardless whether the
operating system is running in 64-bit mode. The default value is 0.</dd>
</dl>
</section>
<section class="Sh">
<h1 class="Sh" id="FILES"><a class="permalink" href="#FILES">FILES</a></h1>
<dl class="Bl-tag Bl-compact">
<dt><span class="Pa">/dev/da?</span></dt>
<dd>array/logical disk interface</dd>
<dt><span class="Pa">/dev/tws?</span></dt>
<dd>management interface</dd>
</dl>
</section>
<section class="Sh">
<h1 class="Sh" id="DIAGNOSTICS"><a class="permalink" href="#DIAGNOSTICS">DIAGNOSTICS</a></h1>
<p class="Pp">Whenever the driver encounters a command failure, it prints out an
error code in the format: "<code class="Li">ERROR: (<error
source>: <error code>):</code>", followed by a text
description of the error. There are other error messages and warnings that
the driver prints out, depending on the kinds of errors that it encounters.
If the driver is compiled with <code class="Dv">TWS_DEBUG</code> defined, it
prints out a whole bunch of debug messages.</p>
</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">da(4)</a>, <a class="Xr">scsi(4)</a></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">tws</code> driver was written by
<span class="An">Manjunath Ranganathaiah</span> for LSI and this manual page
was written by <span class="An">Xin LI</span>
<<a class="Mt" href="mailto:delphij@FreeBSD.org">delphij@FreeBSD.org</a>>
for iXsystems, Inc.</p>
</section>
</div>
<table class="foot">
<tr>
<td class="foot-date">October 4, 2011</td>
<td class="foot-os">FreeBSD 15.0</td>
</tr>
</table>
|
