static/freebsd/man4/mdio.4 4.html


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<table class="head">
  <tr>
    <td class="head-ltitle">MDIO(4)</td>
    <td class="head-vol">Device Drivers Manual</td>
    <td class="head-rtitle">MDIO(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">mdio</code> &#x2014; <span class="Nd">IEEE 802.3
    Management Data Input/Output interface</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 line
    in your kernel configuration file:</p>
<div class="Bd Pp Bd-indent"><code class="Cd">device mdio</code></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">mdio</code> driver provides an
    interconnection between the Media Access Control (MAC) sublayer and Physical
    Layer (PHY) entities' control and status registers, as defined by the IEEE
    802.3 Standard.</p>
<p class="Pp">The <code class="Nm">mdio</code> layer allows device drivers to
    share common support code for various external PHY devices.</p>
<p class="Pp">MDIO is one of two signal interfaces that comprise the Media
    Independent Interface (MII) defined by the IEEE 802.3 Standard. The
    <a class="Xr">miibus(4)</a> driver provides support for devices that require
    full MII support.</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">miibus(4)</a></p>
</section>
<section class="Sh">
<h1 class="Sh" id="STANDARDS"><a class="permalink" href="#STANDARDS">STANDARDS</a></h1>
<p class="Pp">More information on MDIO can be found in the IEEE 802.3
  Standard.</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">mdio</code> driver first appeared in
    <span class="Ux">FreeBSD 10.0</span>.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
<p class="Pp">The driver was written by <span class="An">Stefan Bethke</span>
    &lt;<a class="Mt" href="mailto:stb@lassitu.de">stb@lassitu.de</a>&gt;.</p>
</section>
</div>
<table class="foot">
  <tr>
    <td class="foot-date">December 17, 2015</td>
    <td class="foot-os">FreeBSD 15.0</td>
  </tr>
</table>