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| author | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:59:05 -0400 |
|---|---|---|
| committer | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:59:05 -0400 |
| commit | 1f19f33e45791ea59aed048796fc68672c6723a5 (patch) | |
| tree | 54625fba89e91d1c2177801ec635e8528bba937f /static/freebsd/man9/bus_activate_resource.9 3.html | |
| parent | ac5e55f5f2af5b92794c2aded46c6bae85b5f5ed (diff) | |
docs: Removed Precompiled HTML
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diff --git a/static/freebsd/man9/bus_activate_resource.9 3.html b/static/freebsd/man9/bus_activate_resource.9 3.html deleted file mode 100644 index e9e89e4c..00000000 --- a/static/freebsd/man9/bus_activate_resource.9 3.html +++ /dev/null @@ -1,115 +0,0 @@ -<table class="head"> - <tr> - <td class="head-ltitle">BUS_ACTIVATE_RESOURCE(9)</td> - <td class="head-vol">Kernel Developer's Manual</td> - <td class="head-rtitle">BUS_ACTIVATE_RESOURCE(9)</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">bus_activate_resource</code>, - <code class="Nm">bus_deactivate_resource</code> — - <span class="Nd">activate or deactivate a resource</span></p> -</section> -<section class="Sh"> -<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1> -<p class="Pp"><code class="In">#include - <<a class="In">sys/param.h</a>></code> - <br/> - <code class="In">#include <<a class="In">sys/bus.h</a>></code></p> -<p class="Pp"> - <br/> - <code class="In">#include <<a class="In">machine/bus.h</a>></code> - <br/> - <code class="In">#include <<a class="In">sys/rman.h</a>></code> - <br/> - <code class="In">#include - <<a class="In">machine/resource.h</a>></code></p> -<p class="Pp"><var class="Ft">int</var> - <br/> - <code class="Fn">bus_activate_resource</code>(<var class="Fa">device_t - dev</var>, <var class="Fa">struct resource *r</var>);</p> -<p class="Pp"><var class="Ft">int</var> - <br/> - <code class="Fn">bus_deactivate_resource</code>(<var class="Fa">device_t - dev</var>, <var class="Fa">struct resource *r</var>);</p> -</section> -<section class="Sh"> -<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1> -<p class="Pp">These functions activate or deactivate a previously allocated - resource. In general, resources must be activated before they can be - accessed by the driver. Bus drivers may perform additional actions to ensure - that the resource is ready to be accessed. For example, the PCI bus driver - enables memory decoding in a PCI device's command register when activating a - memory resource.</p> -<p class="Pp">The arguments are as follows:</p> -<dl class="Bl-tag"> - <dt><var class="Fa">dev</var></dt> - <dd>The device that requests ownership of the resource. Before allocation, the - resource is owned by the parent bus.</dd> - <dt><var class="Fa">r</var></dt> - <dd>A pointer to the <var class="Vt">struct resource</var> returned by - <a class="Xr">bus_alloc_resource(9)</a>.</dd> -</dl> -<section class="Ss"> -<h2 class="Ss" id="Resource_Mapping"><a class="permalink" href="#Resource_Mapping">Resource - Mapping</a></h2> -<p class="Pp">Resources which can be mapped for CPU access by a - <a class="Xr">bus_space(9)</a> tag and handle will create a mapping of the - entire resource when activated. The tag and handle for this mapping are - stored in <var class="Fa">r</var> and can be retrieved via - <a class="Xr">rman_get_bustag(9)</a> and - <a class="Xr">rman_get_bushandle(9)</a>. These can be used with the - <a class="Xr">bus_space(9)</a> API to access device registers or memory - described by <var class="Fa">r</var>. If the mapping is associated with a - virtual address, the virtual address can be retrieved via - <a class="Xr">rman_get_virtual(9)</a>.</p> -<p class="Pp">This implicit mapping can be disabled by passing the - <code class="Dv">RF_UNMAPPED</code> flag to - <a class="Xr">bus_alloc_resource(9)</a>. A driver may use this if it wishes - to allocate its own mappings of a resource using - <a class="Xr">bus_map_resource(9)</a>.</p> -<p class="Pp" id="bus_read_4">A wrapper API for <a class="Xr">bus_space(9)</a> - is also provided that accepts the associated resource as the first argument - in place of the <a class="Xr">bus_space(9)</a> tag and handle. The functions - in this wrapper API are named similarly to the - <a class="Xr">bus_space(9)</a> API except that “_space” is - removed from their name. For example, - <a class="permalink" href="#bus_read_4"><code class="Fn">bus_read_4</code></a>() - can be used in place of - <a class="permalink" href="#bus_space_read_4"><code class="Fn" id="bus_space_read_4">bus_space_read_4</code></a>(). - The wrapper API is preferred in new drivers.</p> -<p class="Pp">These two statements both read a 32-bit register at the start of a - resource:</p> -<div class="Bd Pp Li"> -<pre> bus_space_read_4(rman_get_bustag(res), rman_get_bushandle(res), 0); - bus_read_4(res, 0);</pre> -</div> -</section> -</section> -<section class="Sh"> -<h1 class="Sh" id="RETURN_VALUES"><a class="permalink" href="#RETURN_VALUES">RETURN - VALUES</a></h1> -<p class="Pp">Zero is returned on success, otherwise an error is returned.</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">bus_alloc_resource(9)</a>, - <a class="Xr">bus_map_resource(9)</a>, <a class="Xr">bus_space(9)</a>, - <a class="Xr">device(9)</a>, <a class="Xr">driver(9)</a></p> -</section> -<section class="Sh"> -<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1> -<p class="Pp">This manual page was written by <span class="An">Warner - Losh</span> - <<a class="Mt" href="mailto:imp@FreeBSD.org">imp@FreeBSD.org</a>>.</p> -</section> -</div> -<table class="foot"> - <tr> - <td class="foot-date">March 13, 2024</td> - <td class="foot-os">FreeBSD 15.0</td> - </tr> -</table> |
