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<p>C++ <a class="el" href="classL4_1_1Icu.html" title="C++ Icu interface, see Interrupt controller for the C interface.">Icu</a> interface, see <a class="el" href="group__l4__icu__api.html">Interrupt controller</a> for the C interface.
<a href="#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="irq_source.html">irq</a>&gt;</code></p>
<div id="dynsection-0" onclick="return dynsection.toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;"><span class="dynarrow"><span class="arrowhead closed"></span></span>Inheritance diagram for L4::Icu:</div>
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<div id="dynsection-1" onclick="return dynsection.toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;"><span class="dynarrow"><span class="arrowhead closed"></span></span>Collaboration diagram for L4::Icu:</div>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-nested-classes" class="groupheader"><a id="nested-classes" name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr class="memitem:Info" id="r_Info"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Icu_1_1Info.html">Info</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">This class encapsulates information about an ICU. <a href="classL4_1_1Icu_1_1Info.html#details">More...</a><br /></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-pub-methods" class="groupheader"><a id="pub-methods" name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:ada7541da586ea09b925b4d90d7dc357e" id="r_ada7541da586ea09b925b4d90d7dc357e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ada7541da586ea09b925b4d90d7dc357e">bind</a> (unsigned irqnum, <a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; <a class="el" href="structL4_1_1Triggerable.html">Triggerable</a> &gt; irq, <a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *utcb=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()) noexcept</td></tr>
<tr class="memdesc:ada7541da586ea09b925b4d90d7dc357e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Bind an interrupt line of an interrupt controller to an interrupt object. <br /></td></tr>
<tr class="memitem:aa34e56cdac798b1949fcc00553386b8b" id="r_aa34e56cdac798b1949fcc00553386b8b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#aa34e56cdac798b1949fcc00553386b8b">unbind</a> (unsigned irqnum, <a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; <a class="el" href="structL4_1_1Triggerable.html">Triggerable</a> &gt; irq, <a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *utcb=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()) noexcept</td></tr>
<tr class="memdesc:aa34e56cdac798b1949fcc00553386b8b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Remove binding of an interrupt line from the interrupt controller object. <br /></td></tr>
<tr class="memitem:a356cfa88076c92e121ab7760d50d5f18" id="r_a356cfa88076c92e121ab7760d50d5f18"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a356cfa88076c92e121ab7760d50d5f18">info</a> (<a class="el" href="structl4__icu__info__t.html">l4_icu_info_t</a> *info, <a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *utcb=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()) noexcept</td></tr>
<tr class="memdesc:a356cfa88076c92e121ab7760d50d5f18"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get information about the ICU features. <br /></td></tr>
<tr class="memitem:a16857d27edd9799b0f2da2f244968463" id="r_a16857d27edd9799b0f2da2f244968463"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a16857d27edd9799b0f2da2f244968463">msi_info</a> (<a class="el" href="group__l4__basic__types.html#ga1c2c4b333f75b1d05b59855910f2b9cb">l4_umword_t</a> irqnum, <a class="el" href="group__l4__basic__types.html#gaf3331c485014bd12a9e4f9d27a55e689">l4_uint64_t</a> source, <a class="el" href="structl4__icu__msi__info__t.html">l4_icu_msi_info_t</a> *msi_info)</td></tr>
<tr class="memdesc:a16857d27edd9799b0f2da2f244968463"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get MSI info about IRQ. <br /></td></tr>
<tr class="memitem:ab58aa015a5216a0dece5d85089b42aaa" id="r_ab58aa015a5216a0dece5d85089b42aaa"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ab58aa015a5216a0dece5d85089b42aaa">mask</a> (unsigned irqnum, <a class="el" href="group__l4__basic__types.html#ga1c2c4b333f75b1d05b59855910f2b9cb">l4_umword_t</a> *label=0, <a class="el" href="unionl4__timeout__t.html">l4_timeout_t</a> to=<a class="el" href="group__l4__timeout__api.html#gaf01c5e1475efc4f33bc7d1985f7320d3">L4_IPC_NEVER</a>, <a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *utcb=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()) noexcept</td></tr>
<tr class="memdesc:ab58aa015a5216a0dece5d85089b42aaa"><td class="mdescLeft">&#160;</td><td class="mdescRight">Mask an IRQ line. <br /></td></tr>
<tr class="memitem:a4258b1c32fc968b66a1ce15191f51b8b" id="r_a4258b1c32fc968b66a1ce15191f51b8b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a4258b1c32fc968b66a1ce15191f51b8b">set_mode</a> (unsigned irqnum, <a class="el" href="group__l4__basic__types.html#ga1c2c4b333f75b1d05b59855910f2b9cb">l4_umword_t</a> mode, <a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *utcb=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()) noexcept</td></tr>
<tr class="memdesc:a4258b1c32fc968b66a1ce15191f51b8b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set interrupt mode. <br /></td></tr>
<tr class="inherit_header pub_methods_classL4_1_1Irq__eoi"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pub_methods_classL4_1_1Irq__eoi')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Public Member Functions inherited from <a class="el" href="classL4_1_1Irq__eoi.html">L4::Irq_eoi</a></td></tr>
<tr class="memitem:a2143eb2495d0135bc432efc362845483 inherit pub_methods_classL4_1_1Irq__eoi" id="r_a2143eb2495d0135bc432efc362845483"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Irq__eoi.html#a2143eb2495d0135bc432efc362845483">unmask</a> (unsigned irqnum, <a class="el" href="group__l4__basic__types.html#ga1c2c4b333f75b1d05b59855910f2b9cb">l4_umword_t</a> *label=0, <a class="el" href="unionl4__timeout__t.html">l4_timeout_t</a> to=<a class="el" href="group__l4__timeout__api.html#gaf01c5e1475efc4f33bc7d1985f7320d3">L4_IPC_NEVER</a>, <a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *utcb=<a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()) noexcept</td></tr>
<tr class="memdesc:a2143eb2495d0135bc432efc362845483 inherit pub_methods_classL4_1_1Irq__eoi"><td class="mdescLeft">&#160;</td><td class="mdescRight">Unmask the given interrupt line. <br /></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-inherited" class="groupheader"><a id="inherited" name="inherited"></a>
Additional Inherited Members</h2></td></tr>
<tr class="inherit_header pro_types_classL4_1_1Kobject__t"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pro_types_classL4_1_1Kobject__t')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Protected Types inherited from <a class="el" href="classL4_1_1Kobject__t.html">L4::Kobject_t&lt; Icu, Irq_eoi, L4_PROTO_IRQ, Type_info::Demand_t&lt; 1 &gt; &gt;</a></td></tr>
<tr class="memitem:af7df35ba5bf68ef5993e605a6b62328a inherit pro_types_classL4_1_1Kobject__t" id="r_af7df35ba5bf68ef5993e605a6b62328a"><td class="memItemLeft" align="right" valign="top">
typedef <a class="el" href="classL4_1_1Icu.html">Icu</a>&#160;</td><td class="memItemRight" valign="bottom"><b>Class</b></td></tr>
<tr class="memdesc:af7df35ba5bf68ef5993e605a6b62328a inherit pro_types_classL4_1_1Kobject__t"><td class="mdescLeft">&#160;</td><td class="mdescRight">The target interface type (inheriting from <a class="el" href="classL4_1_1Kobject__t.html" title="Helper class to create an L4Re interface class that is derived from a single base class.">Kobject_t</a>). <br /></td></tr>
<tr class="memitem:a0d83157994565e9c01f10006bdda2efa inherit pro_types_classL4_1_1Kobject__t" id="r_a0d83157994565e9c01f10006bdda2efa"><td class="memItemLeft" align="right" valign="top">
typedef Typeid::Iface&lt; PROTO, <a class="el" href="classL4_1_1Icu.html">Icu</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><b>__Iface</b></td></tr>
<tr class="memdesc:a0d83157994565e9c01f10006bdda2efa inherit pro_types_classL4_1_1Kobject__t"><td class="mdescLeft">&#160;</td><td class="mdescRight">The interface description for the derived class. <br /></td></tr>
<tr class="memitem:afc2feec2f4a15e85286aabfa15c53e06 inherit pro_types_classL4_1_1Kobject__t" id="r_afc2feec2f4a15e85286aabfa15c53e06"><td class="memItemLeft" align="right" valign="top">
typedef Typeid::Merge_list&lt; Typeid::Iface_list&lt; <a class="el" href="classL4_1_1Kobject__t.html#a0d83157994565e9c01f10006bdda2efa">__Iface</a> &gt;, typename Irq_eoi::__Iface_list &gt;&#160;</td><td class="memItemRight" valign="bottom"><b>__Iface_list</b></td></tr>
<tr class="memdesc:afc2feec2f4a15e85286aabfa15c53e06 inherit pro_types_classL4_1_1Kobject__t"><td class="mdescLeft">&#160;</td><td class="mdescRight">The list of all RPC interfaces provided directly or through inheritance. <br /></td></tr>
<tr class="inherit_header pro_methods_classL4_1_1Kobject__t"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pro_methods_classL4_1_1Kobject__t')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Protected Member Functions inherited from <a class="el" href="classL4_1_1Kobject__t.html">L4::Kobject_t&lt; Icu, Irq_eoi, L4_PROTO_IRQ, Type_info::Demand_t&lt; 1 &gt; &gt;</a></td></tr>
<tr class="memitem:a3d80fec7e057d575ec4b393437f05f8a inherit pro_methods_classL4_1_1Kobject__t" id="r_a3d80fec7e057d575ec4b393437f05f8a"><td class="memItemLeft" align="right" valign="top">
<a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; <a class="el" href="classL4_1_1Kobject__t.html#af7df35ba5bf68ef5993e605a6b62328a">Class</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><b>c</b> () const noexcept</td></tr>
<tr class="memdesc:a3d80fec7e057d575ec4b393437f05f8a inherit pro_methods_classL4_1_1Kobject__t"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the capability to ourselves. <br /></td></tr>
<tr class="inherit_header pro_static_methods_classL4_1_1Kobject__t"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pro_static_methods_classL4_1_1Kobject__t')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Static Protected Member Functions inherited from <a class="el" href="classL4_1_1Kobject__t.html">L4::Kobject_t&lt; Icu, Irq_eoi, L4_PROTO_IRQ, Type_info::Demand_t&lt; 1 &gt; &gt;</a></td></tr>
<tr class="memitem:a7433b8eed587278821dd496864f75363 inherit pro_static_methods_classL4_1_1Kobject__t" id="r_a7433b8eed587278821dd496864f75363"><td class="memItemLeft" align="right" valign="top">
static void&#160;</td><td class="memItemRight" valign="bottom"><b>__check_protocols__</b> () noexcept</td></tr>
<tr class="memdesc:a7433b8eed587278821dd496864f75363 inherit pro_static_methods_classL4_1_1Kobject__t"><td class="mdescLeft">&#160;</td><td class="mdescRight">Helper to check for protocol conflicts. <br /></td></tr>
</table>
<a name="details" id="details"></a><h2 id="header-details" class="groupheader">Detailed Description</h2>
<div class="textblock"><p>C++ <a class="el" href="classL4_1_1Icu.html" title="C++ Icu interface, see Interrupt controller for the C interface.">Icu</a> interface, see <a class="el" href="group__l4__icu__api.html">Interrupt controller</a> for the C interface. </p>
<dl class="section note"><dt>Note</dt><dd>"ICU" is short for "interrupt control unit".</dd></dl>
<p>This class defines the interface for interrupt controllers. It defines functions for binding <a class="el" href="classL4_1_1Irq.html" title="C++ Irq interface, see IRQs for the C interface.">L4::Irq</a> objects to interrupt lines and other interrupt sources, as well as functions for masking and unmasking of interrupts.</p>
<p>To setup an interrupt line the following steps are required:</p><ol type="1">
<li><a class="el" href="#a4258b1c32fc968b66a1ce15191f51b8b" title="Set interrupt mode.">set_mode()</a> (optional if interrupt has a default mode)</li>
<li><a class="el" href="classL4_1_1Rcv__endpoint.html#a44d288dd670226f6845b5bd8c973b15e" title="Bind the IPC receive endpoint to a thread.">L4::Rcv_endpoint::bind_thread()</a> or <a class="el" href="classL4_1_1Rcv__endpoint.html#a704d82925cec6c9827a9bfcfb062859a" title="Bind a send destination (a thread or thread group) to an IPC receive endpoint.">L4::Rcv_endpoint::bind_snd_destination()</a> to attach the <a class="el" href="classL4_1_1Irq.html" title="C++ Irq interface, see IRQs for the C interface.">L4::Irq</a> object to a send destination.</li>
<li><a class="el" href="#ada7541da586ea09b925b4d90d7dc357e" title="Bind an interrupt line of an interrupt controller to an interrupt object.">bind()</a></li>
<li><a class="el" href="classL4_1_1Irq__eoi.html#a2143eb2495d0135bc432efc362845483" title="Unmask the given interrupt line.">unmask()</a> to receive the first interrupt</li>
</ol>
<p>For certain interrupt sources only some of these steps are necessary and supported, see <a class="el" href="classL4_1_1Scheduler.html" title="C++ interface of the Scheduler kernel object, see Scheduler for the C interface.">L4::Scheduler</a> and <a class="el" href="classL4_1_1Vcon.html" title="C++ L4 Vcon interface, see Virtual Console for the C interface.">L4::Vcon</a>.</p>
<p>At most one <a class="el" href="classL4_1_1Irq.html" title="C++ Irq interface, see IRQs for the C interface.">L4::Irq</a> object can be bound to a certain interrupt source and a certain <a class="el" href="classL4_1_1Irq.html" title="C++ Irq interface, see IRQs for the C interface.">L4::Irq</a> object can be bound to at most one interrupt source.</p>
<dl class="section user"><dt>Include File</dt><dd><div class="fragment"><div class="line"><span class="preprocessor">#include &lt;<a class="code" href="icu.html">l4/sys/icu</a>&gt;</span> </div>
<div class="ttc" id="aicu_html"><div class="ttname"><a href="icu.html">icu</a></div><div class="ttdoc">Interrupt controller.</div></div>
</div><!-- fragment --> </dd></dl>
<p class="definition">Definition at line <a class="el" href="irq_source.html#l00250">250</a> of file <a class="el" href="irq_source.html">irq</a>.</p>
</div><a name="doc-func-members" id="doc-func-members"></a><h2 id="header-doc-func-members" class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ada7541da586ea09b925b4d90d7dc357e">&#9670;&#160;</a></span>bind()</h2>
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<td class="memname"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a> L4::Icu::bind </td>
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<td class="paramtype">unsigned</td> <td class="paramname"><span class="paramname"><em>irqnum</em></span>, </td>
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<td class="paramtype"><a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; <a class="el" href="structL4_1_1Triggerable.html">Triggerable</a> &gt;</td> <td class="paramname"><span class="paramname"><em>irq</em></span>, </td>
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<td class="paramtype"><a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *</td> <td class="paramname"><span class="paramname"><em>utcb</em></span><span class="paramdefsep"> = </span><span class="paramdefval"><a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()</span>&#160;)</td>
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<p>Bind an interrupt line of an interrupt controller to an interrupt object. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">irqnum</td><td>IRQ line at the ICU. </td></tr>
<tr><td class="paramname">irq</td><td>IRQ object for the given IRQ line to bind to this ICU. </td></tr>
<tr><td class="paramname">utcb</td><td>UTCB to be used for this operation, shall be the UTCB of the calling thread. See <a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644" title="Get the UTCB address.">l4_utcb</a>.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Syscall return tag. The caller should check the return value using <a class="el" href="group__l4__ipc__err__api.html#ga05c11e3e10b6c2aa941396ac2018899f" title="Get IPC error code if any or message tag label otherwise for an IPC call.">l4_error()</a> to check for errors and to identify the correct method for unmasking the interrupt. Return values <span class="tt">&lt; 0</span> indicate an error. A return value of <span class="tt">0</span> means a direct unmask via the IRQ object using <a class="el" href="classL4_1_1Irq.html#a9719b8fca30723b52981bed686764901" title="Unmask this IRQ.">L4::Irq::unmask</a>. A return value of <span class="tt">1</span> means that the interrupt has to be unmasked via the ICU using <a class="el" href="classL4_1_1Irq__eoi.html#a2143eb2495d0135bc432efc362845483" title="Unmask the given interrupt line.">L4::Icu::unmask</a>.</dd></dl>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">-L4_EINVAL</td><td><span class="tt">irq</span> is bound to an interrupt source. </td></tr>
<tr><td class="paramname">-L4_EPERM</td><td>Insufficient permissions; see precondition.</td></tr>
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<dl class="section pre"><dt>Precondition</dt><dd>The capability <span class="tt">irq</span> must have the permission <a class="el" href="group__l4__fpage__api.html#ggaee60789a48cab2782f5a368237591b39a561054fb4021ff4a22ab1881c7a7de5a" title="Interface specific &#39;W&#39; right for capability flexpages.">L4_CAP_FPAGE_W</a>.</dd></dl>
<p>In case the <span class="tt">irq</span> is already bound to an interrupt source, it is unbound first. In case the <span class="tt">irq</span> is bound and the interrupt source is bound to a different <a class="el" href="classL4_1_1Irq.html" title="C++ Irq interface, see IRQs for the C interface.">L4::Irq</a> object, only the unbinding happens. An <a class="el" href="classL4_1_1Irq.html" title="C++ Irq interface, see IRQs for the C interface.">L4::Irq</a> object that is bound to an interrupt source will get unbound if the <a class="el" href="classL4_1_1Irq.html" title="C++ Irq interface, see IRQs for the C interface.">L4::Irq</a> object is deleted. </p>
<p class="definition">Definition at line <a class="el" href="irq_source.html#l00310">310</a> of file <a class="el" href="irq_source.html">irq</a>.</p>
<p class="reference">References <a class="el" href="capability_8h_source.html#l00049">L4::Cap_base::cap()</a>, <a class="el" href="kobject_source.html#l00069">L4::Kobject::cap()</a>, and <a class="el" href="icu_8h_source.html#l00396">l4_icu_bind_u()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a356cfa88076c92e121ab7760d50d5f18">&#9670;&#160;</a></span>info()</h2>
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<td class="memname"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a> L4::Icu::info </td>
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<td class="paramtype"><a class="el" href="structl4__icu__info__t.html">l4_icu_info_t</a> *</td> <td class="paramname"><span class="paramname"><em>info</em></span>, </td>
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<td class="paramtype"><a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *</td> <td class="paramname"><span class="paramname"><em>utcb</em></span><span class="paramdefsep"> = </span><span class="paramdefval"><a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()</span>&#160;)</td>
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<p>Get information about the ICU features. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[out]</td><td class="paramname">info</td><td><a class="el" href="classL4_1_1Icu_1_1Info.html" title="This class encapsulates information about an ICU.">Info</a> structure to be filled with information. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">utcb</td><td>UTCB to be used for this operation, shall be the UTCB of the calling thread. See <a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644" title="Get the UTCB address.">l4_utcb</a>.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Syscall return tag </dd></dl>
<p class="definition">Definition at line <a class="el" href="irq_source.html#l00345">345</a> of file <a class="el" href="irq_source.html">irq</a>.</p>
<p class="reference">References <a class="el" href="kobject_source.html#l00069">L4::Kobject::cap()</a>, <a class="el" href="irq_source.html#l00345">info()</a>, and <a class="el" href="icu_8h_source.html#l00420">l4_icu_info_u()</a>.</p>
<p class="reference">Referenced by <a class="el" href="event_source.html#l00198">L4Re::Event::get_axis_info()</a>, <a class="el" href="classL4Re_1_1Event.html#a3b9d0674e29de99afddce35eed52d9d4">L4Re::Event::get_stream_info()</a>, <a class="el" href="classL4Re_1_1Event.html#a0bdbfef4a9152c7ce61dc5cd9deb6023">L4Re::Event::get_stream_info_for_id()</a>, and <a class="el" href="irq_source.html#l00345">info()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ab58aa015a5216a0dece5d85089b42aaa">&#9670;&#160;</a></span>mask()</h2>
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<td class="memname"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a> L4::Icu::mask </td>
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<td class="paramtype">unsigned</td> <td class="paramname"><span class="paramname"><em>irqnum</em></span>, </td>
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<td class="paramtype"><a class="el" href="group__l4__basic__types.html#ga1c2c4b333f75b1d05b59855910f2b9cb">l4_umword_t</a> *</td> <td class="paramname"><span class="paramname"><em>label</em></span><span class="paramdefsep"> = </span><span class="paramdefval">0</span>, </td>
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<td class="paramtype"><a class="el" href="unionl4__timeout__t.html">l4_timeout_t</a></td> <td class="paramname"><span class="paramname"><em>to</em></span><span class="paramdefsep"> = </span><span class="paramdefval"><a class="el" href="group__l4__timeout__api.html#gaf01c5e1475efc4f33bc7d1985f7320d3">L4_IPC_NEVER</a></span>, </td>
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<td class="paramtype"><a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *</td> <td class="paramname"><span class="paramname"><em>utcb</em></span><span class="paramdefsep"> = </span><span class="paramdefval"><a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()</span>&#160;)</td>
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<p>Mask an IRQ line. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">irqnum</td><td>IRQ line at the ICU. </td></tr>
<tr><td class="paramname">label</td><td>If NULL, this function is a send-only message to the ICU. If not NULL, this function will enter an open wait after sending the mask message and the received label is returned here. </td></tr>
<tr><td class="paramname">to</td><td>The timeout-pair (send and receive) that shall be used for this operation. The receive timeout is used with a non-NULL <span class="tt">label</span> only. </td></tr>
<tr><td class="paramname">utcb</td><td>UTCB to be used for this operation, shall be the UTCB of the calling thread. See <a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644" title="Get the UTCB address.">l4_utcb</a>.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Syscall return tag. If <span class="tt">label</span> is NULL, this function performs an IPC send-only operation and there is no return value except <a class="el" href="group__l4__msgtag__api.html#gga16589e963a73c13aefd2760ce418e053aad1669664171cc979970b1e2300bd463" title="Error indicator flag.">L4_MSGTAG_ERROR</a> indicating success or failure of the send operation. In this case use <a class="el" href="group__l4__ipc__err__api.html#gad40f404217497793e95a10d77a47db39" title="Get the IPC error code for an IPC operation.">l4_ipc_error()</a> to check for errors and <b>do not</b> use <a class="el" href="group__l4__ipc__err__api.html#ga05c11e3e10b6c2aa941396ac2018899f" title="Get IPC error code if any or message tag label otherwise for an IPC call.">l4_error()</a>. </dd></dl>
<p class="definition">Definition at line <a class="el" href="irq_source.html#l00393">393</a> of file <a class="el" href="irq_source.html">irq</a>.</p>
<p class="reference">References <a class="el" href="kobject_source.html#l00069">L4::Kobject::cap()</a>, <a class="el" href="icu_8h_source.html#l00483">l4_icu_mask_u()</a>, and <a class="el" href="____timeout_8h_source.html#l00076">L4_IPC_NEVER</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a16857d27edd9799b0f2da2f244968463">&#9670;&#160;</a></span>msi_info()</h2>
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<td class="memname"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a> L4::Icu::msi_info </td>
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<td class="paramtype"><a class="el" href="group__l4__basic__types.html#ga1c2c4b333f75b1d05b59855910f2b9cb">l4_umword_t</a></td> <td class="paramname"><span class="paramname"><em>irqnum</em></span>, </td>
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<td class="paramtype"><a class="el" href="group__l4__basic__types.html#gaf3331c485014bd12a9e4f9d27a55e689">l4_uint64_t</a></td> <td class="paramname"><span class="paramname"><em>source</em></span>, </td>
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<td class="paramtype"><a class="el" href="structl4__icu__msi__info__t.html">l4_icu_msi_info_t</a> *</td> <td class="paramname"><span class="paramname"><em>msi_info</em></span>&#160;)</td>
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<p>Get MSI info about IRQ. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir"></td><td class="paramname">irqnum</td><td>IRQ line at the ICU. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">source</td><td>Platform dependent requester ID for MSIs. On IA32 we use a 20bit source filter value as described in the Intel IRQ remapping specification. </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">msi_info</td><td>A <a class="el" href="structl4__icu__msi__info__t.html" title="Info to use for a specific MSI.">l4_icu_msi_info_t</a> structure receiving the address and the data value to trigger this MSI.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Syscall return tag </dd></dl>
<p class="reference">References <a class="el" href="#a16857d27edd9799b0f2da2f244968463">msi_info()</a>.</p>
<p class="reference">Referenced by <a class="el" href="#a16857d27edd9799b0f2da2f244968463">msi_info()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a4258b1c32fc968b66a1ce15191f51b8b">&#9670;&#160;</a></span>set_mode()</h2>
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<td class="memname"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a> L4::Icu::set_mode </td>
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<td class="paramtype">unsigned</td> <td class="paramname"><span class="paramname"><em>irqnum</em></span>, </td>
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<td class="paramtype"><a class="el" href="group__l4__basic__types.html#ga1c2c4b333f75b1d05b59855910f2b9cb">l4_umword_t</a></td> <td class="paramname"><span class="paramname"><em>mode</em></span>, </td>
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<td class="paramtype"><a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *</td> <td class="paramname"><span class="paramname"><em>utcb</em></span><span class="paramdefsep"> = </span><span class="paramdefval"><a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()</span>&#160;)</td>
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<p>Set interrupt mode. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">irqnum</td><td>IRQ line at the ICU. </td></tr>
<tr><td class="paramname">mode</td><td>Mode, see <a class="el" href="group__l4__irq__api.html#gac862068761c98665b621f946aecef120" title="Interrupt attributes.">L4_irq_mode</a>. </td></tr>
<tr><td class="paramname">utcb</td><td>UTCB to be used for this operation, shall be the UTCB of the calling thread. See <a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644" title="Get the UTCB address.">l4_utcb</a>.</td></tr>
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</dl>
<dl class="section return"><dt>Returns</dt><dd>Syscall return tag </dd></dl>
<p class="definition">Definition at line <a class="el" href="irq_source.html#l00421">421</a> of file <a class="el" href="irq_source.html">irq</a>.</p>
<p class="reference">References <a class="el" href="kobject_source.html#l00069">L4::Kobject::cap()</a>, and <a class="el" href="icu_8h_source.html#l00457">l4_icu_set_mode_u()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aa34e56cdac798b1949fcc00553386b8b">&#9670;&#160;</a></span>unbind()</h2>
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<td class="memname"><a class="el" href="structl4__msgtag__t.html">l4_msgtag_t</a> L4::Icu::unbind </td>
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<td class="paramtype">unsigned</td> <td class="paramname"><span class="paramname"><em>irqnum</em></span>, </td>
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<td class="paramtype"><a class="el" href="classL4_1_1Cap.html">L4::Cap</a>&lt; <a class="el" href="structL4_1_1Triggerable.html">Triggerable</a> &gt;</td> <td class="paramname"><span class="paramname"><em>irq</em></span>, </td>
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<td class="paramtype"><a class="el" href="group__l4__utcb__api.html#ga89be8a86d11c1d532b636cc2df1330fb">l4_utcb_t</a> *</td> <td class="paramname"><span class="paramname"><em>utcb</em></span><span class="paramdefsep"> = </span><span class="paramdefval"><a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644">l4_utcb</a>()</span>&#160;)</td>
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<p>Remove binding of an interrupt line from the interrupt controller object. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">irqnum</td><td>IRQ line at the ICU. </td></tr>
<tr><td class="paramname">irq</td><td>IRQ object to remove from the ICU. </td></tr>
<tr><td class="paramname">utcb</td><td>UTCB to be used for this operation, shall be the UTCB of the calling thread. See <a class="el" href="group__l4__utcb__api.html#gadc099b4a59e1d99638c72c11a8c8b644" title="Get the UTCB address.">l4_utcb</a>.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Syscall return tag </dd></dl>
<p class="definition">Definition at line <a class="el" href="irq_source.html#l00328">328</a> of file <a class="el" href="irq_source.html">irq</a>.</p>
<p class="reference">References <a class="el" href="capability_8h_source.html#l00049">L4::Cap_base::cap()</a>, <a class="el" href="kobject_source.html#l00069">L4::Kobject::cap()</a>, and <a class="el" href="icu_8h_source.html#l00408">l4_icu_unbind_u()</a>.</p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>l4/sys/<a class="el" href="irq_source.html">irq</a></li>
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