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Viktor Reusch
2025-09-12 15:55:45 +02:00
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">// vi:set ft=cpp: -*- Mode: C++ -*-</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">/*</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> * Copyright (C) 2024 Kernkonzept GmbH.</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * Author(s): Martin Kuettler &lt;martin.kuettler@kernkonzept.com&gt;</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> *</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * License: see LICENSE.spdx (in this directory or the directories above)</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> */</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span> </div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include &lt;<a class="code" href="error__helper.html">l4/re/error_helper</a>&gt;</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include &lt;l4/sys/cxx/ipc_epiface&gt;</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include &lt;l4/l4virtio/server/virtio&gt;</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include &lt;l4/l4virtio/server/l4virtio&gt;</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include &lt;l4/l4virtio/l4virtio&gt;</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include &lt;<a class="code" href="error__helper.html">l4/re/error_helper</a>&gt;</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include &lt;l4/re/util/object_registry&gt;</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include &lt;l4/re/util/br_manager&gt;</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include &lt;l4/sys/cxx/ipc_epiface&gt;</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include &lt;<a class="code" href="pair.html">l4/cxx/pair</a>&gt;</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceL4virtio.html">L4virtio</a> {</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="keyword">namespace </span>Svr {</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span>enum : <a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span>{</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> I2c_msg_ok = 0,</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> I2c_msg_err = 1,</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span>};</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="keyword">struct </span>I2c_request_flags</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span>{</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> raw;</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> </div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> CXX_BITFIELD_MEMBER(0, 0, fail_next, raw);</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> CXX_BITFIELD_MEMBER(1, 1, m_rd, raw);</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span>};</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="keyword">static_assert</span>(<span class="keyword">sizeof</span>(I2c_request_flags) == 4,</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> <span class="stringliteral">&quot;I2c_request_flags contains padding bytes.&quot;</span>);</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> </div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span><span class="keyword">struct </span>I2c_out_hdr</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span>{</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <a class="code hl_typedef" href="group__l4__basic__types.html#gae8d67914f723bf843df6f311ad2619a2">l4_uint16_t</a> addr;</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <a class="code hl_typedef" href="group__l4__basic__types.html#gae8d67914f723bf843df6f311ad2619a2">l4_uint16_t</a> padding;</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> I2c_request_flags flags;</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span>};</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="keyword">static_assert</span>(<span class="keyword">sizeof</span>(I2c_out_hdr) == 8, <span class="stringliteral">&quot;I2c_out_hdr contains padding bytes.&quot;</span>);</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> </div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="keyword">struct </span>I2c_in_hdr</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span>{</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> status;</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span>};</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span><span class="keyword">static_assert</span>(<span class="keyword">sizeof</span>(I2c_in_hdr) == 1, <span class="stringliteral">&quot;I2c_in_hdr contains padding bytes.&quot;</span>);</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span><span class="keyword">struct </span>I2c_req</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span>{</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">struct </span>I2c_out_hdr out_hdr;</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keywordtype">unsigned</span> buf_len;</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a>* buf;</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">struct </span>I2c_in_hdr *in_hdr;</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keywordtype">unsigned</span> write_size;</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keywordtype">void</span> set_status(<a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> status)</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> {</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> in_hdr-&gt;status = status;</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> }</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span>};</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Request_handler,</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="keyword">typename</span> Epiface = L4virtio::Device&gt;</div>
<div class="foldopen" id="foldopen00086" data-start="{" data-end="};">
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Virtio__i2c.html"> 86</a></span><span class="keyword">class </span>Virtio_i2c : <span class="keyword">public</span> L4virtio::Svr::Device,</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">public</span> <a class="code hl_struct" href="structL4_1_1Epiface__t.html">L4::Epiface_t</a>&lt;Virtio_i2c&lt;Request_handler,</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> Epiface&gt;,</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> Epiface&gt;</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span>{</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">enum</span></div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> {</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> Num_request_queues = 1,</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> queue_size = 128,</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> };</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">using </span>I2c_request_handler = Request_handler;</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span></div>
<div class="foldopen" id="foldopen00106" data-start="{" data-end="};">
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Virtio__i2c_1_1Host__irq.html"> 106</a></span> <span class="keyword">class </span>Host_irq : <span class="keyword">public</span> <a class="code hl_struct" href="structL4_1_1Irqep__t.html">L4::Irqep_t</a>&lt;Host_irq&gt;</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> {</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="keyword">explicit</span> Host_irq(Virtio_i2c *i2c) : <a class="code hl_struct" href="structL4_1_1Irqep__t.html">L4::Irqep_t&lt;Host_irq&gt;</a>(), _i2c(i2c) {}</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="keywordtype">void</span> handle_irq()</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> {</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> _i2c-&gt;handle_queue();</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> }</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> </div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> Virtio_i2c *_i2c;</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> };</div>
</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span></div>
<div class="foldopen" id="foldopen00123" data-start="{" data-end="};">
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Virtio__i2c_1_1Request__processor.html"> 123</a></span> <span class="keyword">class </span>Request_processor : <span class="keyword">public</span> <a class="code hl_class" href="classL4virtio_1_1Svr_1_1Request__processor.html">L4virtio::Svr::Request_processor</a></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> {</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> </div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">struct </span>Data_buffer : <span class="keyword">public</span> <a class="code hl_struct" href="structL4virtio_1_1Svr_1_1Data__buffer.html">L4virtio::Svr::Data_buffer</a></div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> {</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> Data_buffer()</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> {</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Data__buffer.html#ac58e770774164d220267be04fb97b551">pos</a> = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Data__buffer.html#a4c105bf354d6663f323efeb81c74ebc2">left</a> = 0;</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> }</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <span class="comment">// This constructor is called from within start, so make it available.</span></div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> Data_buffer(L4virtio::Svr::Driver_mem_region <span class="keyword">const</span> *r,</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <a class="code hl_class" href="classL4virtio_1_1Virtqueue_1_1Desc.html">L4virtio::Svr::Virtqueue::Desc</a> <span class="keyword">const</span> &amp;d,</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <a class="code hl_class" href="classL4virtio_1_1Svr_1_1Request__processor.html">L4virtio::Svr::Request_processor</a> <span class="keyword">const</span> *)</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> {</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Data__buffer.html#ac58e770774164d220267be04fb97b551">pos</a> = <span class="keyword">static_cast&lt;</span><span class="keywordtype">char</span> *<span class="keyword">&gt;</span>(r-&gt;<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Driver__mem__region__t.html#af08e01da1fdcbc0f0f4c4d90da5d0469">local</a>(d.<a class="code hl_variable" href="classL4virtio_1_1Virtqueue_1_1Desc.html#a8aad49eded68125ad5e94d0688d09828">addr</a>));</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Data__buffer.html#a4c105bf354d6663f323efeb81c74ebc2">left</a> = d.<a class="code hl_variable" href="classL4virtio_1_1Virtqueue_1_1Desc.html#a55a515e923e62893696c1e6c09ffb62b">len</a>;</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> }</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> </div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> };</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> </div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> Request_processor(<a class="code hl_class" href="classL4virtio_1_1Svr_1_1Virtqueue.html">L4virtio::Svr::Virtqueue</a> *q, I2c_request_handler *hndlr,</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> Virtio_i2c *i2c)</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> : _q(q), _req_handler(hndlr), _i2c(i2c), _head(), _req(),</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> _fail_next(<span class="keyword">false</span>)</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> {}</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> </div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> <span class="keywordtype">bool</span> init_queue()</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> {</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="keyword">auto</span> r = _q-&gt;next_avail();</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> </div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> <span class="keywordflow">if</span> (<a class="code hl_define" href="group__l4sys__defines.html#ga3df4200910f2664b97397c23693beeb0">L4_UNLIKELY</a>(!r))</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> </div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> _head = <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Request__processor.html#abcf6a6b8bf80e0d73d45b5eb9e817abd">start</a>(_i2c-&gt;mem_info(), r, &amp;_req);</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> </div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> }</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span></div>
<div class="foldopen" id="foldopen00172" data-start="{" data-end="}">
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Virtio__i2c_1_1Request__processor.html#a6fc14302d7a76a9aee642bb2ea981e84"> 172</a></span> I2c_req <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Virtio__i2c_1_1Request__processor.html#a6fc14302d7a76a9aee642bb2ea981e84">get_request</a>()</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> {</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> I2c_req request;</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> memcpy(&amp;request.out_hdr, _req.pos, <span class="keyword">sizeof</span>(I2c_out_hdr));</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> </div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> <span class="comment">// number of bytes to be written in the answer.</span></div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> request.write_size = <span class="keyword">sizeof</span>(I2c_in_hdr);</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> request.buf_len = 0;</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> </div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> Data_buffer req;</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> <span class="comment">// 2nd part: either the optional buffer or the in_hdr</span></div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> <span class="keywordflow">if</span> (<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Request__processor.html#a0bb9280caa7b899486ccd83bcf0588cd">next</a>(_i2c-&gt;mem_info(), &amp;req))</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> {</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> </div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> request.buf_len += req.<a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Data__buffer.html#a4c105bf354d6663f323efeb81c74ebc2">left</a>;</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> request.buf = <span class="keyword">reinterpret_cast&lt;</span><a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> *<span class="keyword">&gt;</span>(req.<a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Data__buffer.html#ac58e770774164d220267be04fb97b551">pos</a>);</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> }</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> </div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> <span class="comment">// 3rd part: in_hdr</span></div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> <span class="keywordflow">if</span> (<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Request__processor.html#a0bb9280caa7b899486ccd83bcf0588cd">next</a>(_i2c-&gt;mem_info(), &amp;req))</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> {</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> <span class="comment">// 2nd part was indeed a buffer</span></div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> <span class="keywordflow">if</span> (request.out_hdr.flags.m_rd())</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> request.write_size += request.buf_len;</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> </div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> <span class="comment">// actual 3rd part</span></div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> request.in_hdr = <span class="keyword">reinterpret_cast&lt;</span>I2c_in_hdr *<span class="keyword">&gt;</span>(req.<a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Data__buffer.html#ac58e770774164d220267be04fb97b551">pos</a>);</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> }</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> {</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> <span class="comment">// no 3rd part, 2nd part is in_hdr;</span></div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> request.in_hdr = <span class="keyword">reinterpret_cast&lt;</span>I2c_in_hdr *<span class="keyword">&gt;</span>(request.buf);</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> request.buf = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> request.buf_len = 0;</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> }</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> </div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> <span class="keywordflow">return</span> request;</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> }</div>
</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> </div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> <span class="keywordtype">void</span> handle_request()</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> {</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> <span class="keywordflow">if</span> (!_head)</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> <span class="keywordflow">if</span> (!init_queue())</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> </div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> <span class="keyword">using </span>Consumed_entry =</div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> <a class="code hl_struct" href="structcxx_1_1Pair.html">cxx::Pair&lt;L4virtio::Svr::Virtqueue::Head_desc, l4_uint32_t&gt;</a>;</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> std::vector&lt;Consumed_entry&gt; consumed;</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> </div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> <span class="keywordflow">for</span> (;;)</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> {</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> <span class="keyword">auto</span> r = <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Virtio__i2c_1_1Request__processor.html#a6fc14302d7a76a9aee642bb2ea981e84">get_request</a>();</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> <span class="keywordflow">if</span> (_fail_next)</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> {</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> r.set_status(I2c_msg_err);</div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> _fail_next = r.out_hdr.flags.fail_next();</div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> }</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> {</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> <span class="keywordtype">bool</span> ok;</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> <a class="code hl_typedef" href="group__l4__basic__types.html#gae8d67914f723bf843df6f311ad2619a2">l4_uint16_t</a> i2c_addr = r.out_hdr.addr &gt;&gt; 1;</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> <span class="keywordflow">if</span> (r.out_hdr.flags.m_rd())</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> ok = _req_handler-&gt;handle_read(i2c_addr, r.buf, r.buf_len);</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> ok = _req_handler-&gt;handle_write(i2c_addr, r.buf, r.buf_len);</div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> <span class="keywordflow">if</span> (ok)</div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> {</div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> r.set_status(I2c_msg_ok);</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span> _fail_next = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span> }</div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> {</div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> r.set_status(I2c_msg_err);</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> _fail_next = r.out_hdr.flags.fail_next();</div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span> }</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> }</div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> consumed.emplace_back(_head, r.write_size);</div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> <span class="keywordflow">if</span> (!init_queue())</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> }</div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> </div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> _q-&gt;finish(consumed.begin(), consumed.end(), _i2c);</div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> </div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> _head = Virtqueue::Head_desc();</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> }</div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span> </div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> L4virtio::Svr::Virtqueue *_q;</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> I2c_request_handler *_req_handler;</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> Virtio_i2c *_i2c;</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> L4virtio::Svr::Virtqueue::Head_desc _head;</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> Data_buffer _req;</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> <span class="keywordtype">bool</span> _fail_next;</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> };</div>
</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> </div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> <span class="keyword">struct </span>Features : <span class="keyword">public</span> L4virtio::Svr::Dev_config::Features</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> {</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> Features() = <span class="keywordflow">default</span>;</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> Features(<a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>) : L4virtio::Svr::Dev_config::Features(<a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>) {}</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> </div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> <span class="comment">// This feature is mandatory. The driver is requested to abort communication</span></div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> <span class="comment">// if this is not offered.</span></div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> CXX_BITFIELD_MEMBER(0, 0, zero_length_request, <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>);</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> };</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> </div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> Virtio_i2c(I2c_request_handler *hndlr, L4Re::Util::Object_registry *registry)</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> : L4virtio::Svr::Device(&amp;_dev_config),</div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span> _dev_config(L4VIRTIO_VENDOR_KK, <a class="code hl_enumvalue" href="group__l4virtio__transport.html#ggaa3812d621d81dd6a7101d739153b6c3baa244c71f0cb8ddbe685b37ea19ef805c">L4VIRTIO_ID_I2C</a>, Num_request_queues),</div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span> _req_handler(hndlr),</div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> _host_irq(this),</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span> _request_processor(&amp;_q, hndlr, this)</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span> {</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Device__t.html#ac13ae09cfc41fad98bd25c2d76bfac63">init_mem_info</a>(2);</div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Device__t.html#aedbe988112e98750e5409a8c92358dcf">reset_queue_config</a>(0, queue_size);</div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Device__t.html#ab906b4cc61026fd815a8056f07bef10e">setup_queue</a>(&amp;_q, 0, queue_size);</div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span> registry-&gt;<a class="code hl_function" href="classL4Re_1_1Util_1_1Object__registry.html#a17efa2d2a6364b35054f354daa27518e">register_irq_obj</a>(&amp;_host_irq);</div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> </div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span> Features hf(0);</div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> hf.ring_indirect_desc() = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span> hf.zero_length_request() = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> _dev_config.host_features(0) = hf.raw;</div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span> _dev_config.set_host_feature(<a class="code hl_enumvalue" href="group__l4virtio__transport.html#gga01d1e713668a8ee48f1e34f428cea8d0ab8ea6c40b0611434c90ffee0bb729342">L4VIRTIO_FEATURE_VERSION_1</a>);</div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span> _dev_config.reset_hdr();</div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span> }</div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"> 296</span> </div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span> <span class="keywordtype">void</span> notify_queue(L4virtio::Svr::Virtqueue *)</div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> {</div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span> <span class="keywordflow">if</span> (_q.no_notify_guest())</div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span> </div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span> _dev_config.add_irq_status(<a class="code hl_enumvalue" href="group__l4virtio__transport.html#ggafc85528edcc3d740233740766f759fdda764bdaf5cff15bd8cd27f402f6e273b2">L4VIRTIO_IRQ_STATUS_VRING</a>);</div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span> <a class="code hl_function" href="namespaceL4Re.html#ae21329b88c6ffc4917048e8d9564ea99">L4Re::chkipc</a>(_notify_guest_irq-&gt;trigger(), <span class="stringliteral">&quot;trigger guest irq&quot;</span>);</div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span> }</div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span> </div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span> <span class="keywordtype">void</span> handle_queue()</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span> {</div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span> _request_processor.handle_request();</div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span> }</div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span> </div>
<div class="foldopen" id="foldopen00311" data-start="{" data-end="}">
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#a7647ab68bc197a475592df93024e2899"> 311</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#a7647ab68bc197a475592df93024e2899">reset</a>()<span class="keyword"> override</span></div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span> }</div>
</div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno"> 314</span> </div>
<div class="foldopen" id="foldopen00315" data-start="{" data-end="}">
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#a7ef80b18ecd64d7c2153d88d458520de"> 315</a></span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#a7ef80b18ecd64d7c2153d88d458520de">check_queues</a>()<span class="keyword"> override</span></div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span> }</div>
</div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno"> 319</span> </div>
<div class="foldopen" id="foldopen00320" data-start="{" data-end="}">
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#af23e0c07dc9136f1be2c44582526bf81"> 320</a></span> <span class="keywordtype">int</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#af23e0c07dc9136f1be2c44582526bf81">reconfig_queue</a>(<span class="keywordtype">unsigned</span> idx)<span class="keyword"> override</span></div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno"> 322</span> <span class="keywordflow">if</span> (idx != 0)</div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span> <span class="keywordflow">return</span> -<a class="code hl_enumvalue" href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9a226d93ada42b58951cfe40102ae169c8">L4_ERANGE</a>;</div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno"> 324</span> </div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Device__t.html#ab906b4cc61026fd815a8056f07bef10e">setup_queue</a>(&amp;_q, 0, queue_size);</div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno"> 326</span> </div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span> <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9aca91ea3bdb5bd82f63784ee66b489d5e">L4_EOK</a>;</div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno"> 328</span> }</div>
</div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno"> 329</span> </div>
<div class="foldopen" id="foldopen00330" data-start="{" data-end="}">
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#a0b7879938cab054a3024435c3db4ec6a"> 330</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#a0b7879938cab054a3024435c3db4ec6a">trigger_driver_config_irq</a>()<span class="keyword"> override</span></div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno"> 331</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno"> 332</span> _dev_config.add_irq_status(<a class="code hl_enumvalue" href="group__l4virtio__transport.html#ggafc85528edcc3d740233740766f759fdda7e21836e79756a2e357e1cbc2509090d">L4VIRTIO_IRQ_STATUS_CONFIG</a>);</div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</span> _notify_guest_irq-&gt;trigger();</div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno"> 334</span> }</div>
</div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span> </div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno"> 336</span> <a class="code hl_class" href="classL4_1_1Ipc__svr_1_1Server__iface.html">L4::Ipc_svr::Server_iface</a> *<a class="code hl_function" href="structL4_1_1Epiface.html#a9605834c855375364504bd0f7ae78273">server_iface</a>()<span class="keyword"> const override</span></div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno"> 337</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno"> 338</span> <span class="keywordflow">return</span> <a class="code hl_function" href="structL4_1_1Epiface.html#a9605834c855375364504bd0f7ae78273">L4::Epiface::server_iface</a>();</div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno"> 339</span> }</div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno"> 340</span> </div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno"> 341</span> <span class="keywordtype">long</span> op_set_status(L4virtio::Device::Rights r, <span class="keywordtype">unsigned</span> status)</div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno"> 342</span> {</div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno"> 343</span> <span class="keywordflow">return</span> L4virtio::Svr::Device::op_set_status(r, status);</div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno"> 344</span> }</div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno"> 345</span> </div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno"> 346</span> <span class="keywordtype">long</span> op_config_queue(L4virtio::Device::Rights r, <span class="keywordtype">unsigned</span> queue)</div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno"> 347</span> {</div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno"> 348</span> <span class="keywordflow">return</span> L4virtio::Svr::Device::op_config_queue(r, queue);</div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno"> 349</span> }</div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno"> 350</span> </div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno"> 351</span> <span class="keywordtype">long</span> op_device_config(L4virtio::Device::Rights r,</div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno"> 352</span> L4::Ipc::Cap&lt;L4Re::Dataspace&gt; &amp;config_ds,</div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno"> 353</span> <a class="code hl_typedef" href="group__l4__basic__types.html#ga4087b991c40c0d2fcde9ca331049a4d4">l4_addr_t</a> &amp;ds_offset)</div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno"> 354</span> {</div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno"> 355</span> <span class="keywordflow">return</span> L4virtio::Svr::Device::op_device_config(r, config_ds, ds_offset);</div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno"> 356</span> }</div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno"> 357</span> </div>
<div class="foldopen" id="foldopen00358" data-start="{" data-end="}">
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#ac01c8454e2641168007a2594ab499096"> 358</a></span> <a class="code hl_class" href="classL4_1_1Cap.html">L4::Cap&lt;L4::Irq&gt;</a> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#ac01c8454e2641168007a2594ab499096">device_notify_irq</a>()<span class="keyword"> const override</span></div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno"> 359</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno"> 360</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceL4.html#ac674c8e32808f504f4fa0aa8e5276e84">L4::cap_cast&lt;L4::Irq&gt;</a>(_host_irq.obj_cap());</div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno"> 361</span> }</div>
</div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno"> 362</span> </div>
<div class="foldopen" id="foldopen00363" data-start="{" data-end="}">
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#a4179b726c2a6529f2a65aa4ad7e02984"> 363</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#a4179b726c2a6529f2a65aa4ad7e02984">register_single_driver_irq</a>()<span class="keyword"> override</span></div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno"> 364</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno"> 365</span> _notify_guest_irq = <a class="code hl_function" href="namespaceL4Re.html#a64b057254a760643ba67a9ed452fede8">L4Re::chkcap</a></div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno"> 366</span> (<a class="code hl_function" href="structL4_1_1Epiface.html#a9605834c855375364504bd0f7ae78273">server_iface</a>()-&gt;<span class="keyword">template</span> rcv_cap&lt;L4::Irq&gt;(0));</div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno"> 367</span> </div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno"> 368</span> <a class="code hl_function" href="namespaceL4Re.html#a3f17984019f06676a7e3eecb41bbb0bb">L4Re::chksys</a>(<a class="code hl_function" href="structL4_1_1Epiface.html#a9605834c855375364504bd0f7ae78273">server_iface</a>()-&gt;realloc_rcv_cap(0));</div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno"> 369</span> }</div>
</div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno"> 370</span> </div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno"> 371</span> </div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno"> 372</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno"> 373</span> L4virtio::Svr::Dev_config_t&lt;L4virtio::Svr::No_custom_data&gt;_dev_config;</div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno"> 374</span> I2c_request_handler *_req_handler;</div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno"> 375</span> <a class="code hl_class" href="classL4virtio_1_1Svr_1_1Virtqueue.html">L4virtio::Svr::Virtqueue</a> _q;</div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno"> 376</span> Host_irq _host_irq;</div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno"> 377</span> <a class="code hl_class" href="classL4_1_1Cap.html">L4::Cap&lt;L4::Irq&gt;</a> _notify_guest_irq;</div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno"> 378</span> <a class="code hl_class" href="classL4virtio_1_1Svr_1_1Request__processor.html">Request_processor</a> _request_processor;</div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno"> 379</span>};</div>
</div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno"> 380</span> </div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno"> 381</span>} <span class="comment">// namespace Svr</span></div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno"> 382</span>} <span class="comment">// namespace L4virtio</span></div>
<div class="ttc" id="aclassL4Re_1_1Util_1_1Object__registry_html_a17efa2d2a6364b35054f354daa27518e"><div class="ttname"><a href="classL4Re_1_1Util_1_1Object__registry.html#a17efa2d2a6364b35054f354daa27518e">L4Re::Util::Object_registry::register_irq_obj</a></div><div class="ttdeci">L4::Cap&lt; L4::Irq &gt; register_irq_obj(L4::Epiface *o) override</div><div class="ttdoc">Register a handler for an interrupt.</div><div class="ttdef"><b>Definition</b> <a href="object__registry_source.html#l00227">object_registry:227</a></div></div>
<div class="ttc" id="aclassL4_1_1Cap_html"><div class="ttname"><a href="classL4_1_1Cap.html">L4::Cap</a></div><div class="ttdoc">C++ interface for capabilities.</div><div class="ttdef"><b>Definition</b> <a href="capability_8h_source.html#l00223">capability.h:224</a></div></div>
<div class="ttc" id="aclassL4_1_1Ipc__svr_1_1Server__iface_html"><div class="ttname"><a href="classL4_1_1Ipc__svr_1_1Server__iface.html">L4::Ipc_svr::Server_iface</a></div><div class="ttdoc">Interface for server-loop related functions.</div><div class="ttdef"><b>Definition</b> <a href="ipc__epiface_source.html#l00036">ipc_epiface:37</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Device__t_html_ab906b4cc61026fd815a8056f07bef10e"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Device__t.html#ab906b4cc61026fd815a8056f07bef10e">L4virtio::Svr::Device_t&lt; No_custom_data &gt;::setup_queue</a></div><div class="ttdeci">bool setup_queue(Virtqueue *q, unsigned qn, unsigned num_max)</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l01047">l4virtio:1047</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Device__t_html_ac13ae09cfc41fad98bd25c2d76bfac63"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Device__t.html#ac13ae09cfc41fad98bd25c2d76bfac63">L4virtio::Svr::Device_t&lt; No_custom_data &gt;::init_mem_info</a></div><div class="ttdeci">void init_mem_info(unsigned num)</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l01012">l4virtio:1012</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Device__t_html_aedbe988112e98750e5409a8c92358dcf"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Device__t.html#aedbe988112e98750e5409a8c92358dcf">L4virtio::Svr::Device_t&lt; No_custom_data &gt;::reset_queue_config</a></div><div class="ttdeci">void reset_queue_config(unsigned idx, unsigned num_max, bool inc_generation=false)</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l01002">l4virtio:1002</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Driver__mem__region__t_html_af08e01da1fdcbc0f0f4c4d90da5d0469"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Driver__mem__region__t.html#af08e01da1fdcbc0f0f4c4d90da5d0469">L4virtio::Svr::Driver_mem_region_t::local</a></div><div class="ttdeci">T * local(Ptr&lt; T &gt; p) const</div><div class="ttdoc">Get the local address for driver address p.</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l00616">l4virtio:616</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Request__processor_html"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Request__processor.html">L4virtio::Svr::Request_processor</a></div><div class="ttdoc">Encapsulate the state for processing a VIRTIO request.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00472">virtio:473</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Request__processor_html_a0bb9280caa7b899486ccd83bcf0588cd"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Request__processor.html#a0bb9280caa7b899486ccd83bcf0588cd">L4virtio::Svr::Request_processor::next</a></div><div class="ttdeci">bool next(DESC_MAN *dm, ARGS... args)</div><div class="ttdoc">Switch to the next descriptor in a descriptor chain.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00570">virtio:570</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Request__processor_html_abcf6a6b8bf80e0d73d45b5eb9e817abd"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Request__processor.html#abcf6a6b8bf80e0d73d45b5eb9e817abd">L4virtio::Svr::Request_processor::start</a></div><div class="ttdeci">void start(DESC_MAN *dm, Virtqueue *ring, Virtqueue::Head_desc const &amp;request, ARGS... args)</div><div class="ttdoc">Start processing a new request.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00501">virtio:501</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Virtio__i2c_1_1Request__processor_html_a6fc14302d7a76a9aee642bb2ea981e84"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Virtio__i2c_1_1Request__processor.html#a6fc14302d7a76a9aee642bb2ea981e84">L4virtio::Svr::Virtio_i2c::Request_processor::get_request</a></div><div class="ttdeci">I2c_req get_request()</div><div class="ttdoc">Linux prepares the I2C request in three data parts: 1st: out_hdr 2nd: buffer (optional) 3rd: in_hdr.</div><div class="ttdef"><b>Definition</b> <a href="#l00172">virtio-i2c-device:172</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Virtio__i2c_html_a0b7879938cab054a3024435c3db4ec6a"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#a0b7879938cab054a3024435c3db4ec6a">L4virtio::Svr::Virtio_i2c::trigger_driver_config_irq</a></div><div class="ttdeci">void trigger_driver_config_irq() override</div><div class="ttdoc">callback for triggering configuration change notification IRQ</div><div class="ttdef"><b>Definition</b> <a href="#l00330">virtio-i2c-device:330</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Virtio__i2c_html_a4179b726c2a6529f2a65aa4ad7e02984"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#a4179b726c2a6529f2a65aa4ad7e02984">L4virtio::Svr::Virtio_i2c::register_single_driver_irq</a></div><div class="ttdeci">void register_single_driver_irq() override</div><div class="ttdoc">callback for registering a single guest IRQ for all queues (old-style)</div><div class="ttdef"><b>Definition</b> <a href="#l00363">virtio-i2c-device:363</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Virtio__i2c_html_a7647ab68bc197a475592df93024e2899"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#a7647ab68bc197a475592df93024e2899">L4virtio::Svr::Virtio_i2c::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdoc">reset callback, called for doing a device reset</div><div class="ttdef"><b>Definition</b> <a href="#l00311">virtio-i2c-device:311</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Virtio__i2c_html_a7ef80b18ecd64d7c2153d88d458520de"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#a7ef80b18ecd64d7c2153d88d458520de">L4virtio::Svr::Virtio_i2c::check_queues</a></div><div class="ttdeci">bool check_queues() override</div><div class="ttdoc">callback for checking if the queues at DRIVER_OK transition</div><div class="ttdef"><b>Definition</b> <a href="#l00315">virtio-i2c-device:315</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Virtio__i2c_html_ac01c8454e2641168007a2594ab499096"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#ac01c8454e2641168007a2594ab499096">L4virtio::Svr::Virtio_i2c::device_notify_irq</a></div><div class="ttdeci">L4::Cap&lt; L4::Irq &gt; device_notify_irq() const override</div><div class="ttdoc">callback to gather the device notification IRQ (old-style)</div><div class="ttdef"><b>Definition</b> <a href="#l00358">virtio-i2c-device:358</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Virtio__i2c_html_af23e0c07dc9136f1be2c44582526bf81"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Virtio__i2c.html#af23e0c07dc9136f1be2c44582526bf81">L4virtio::Svr::Virtio_i2c::reconfig_queue</a></div><div class="ttdeci">int reconfig_queue(unsigned idx) override</div><div class="ttdoc">callback for client queue-config request</div><div class="ttdef"><b>Definition</b> <a href="#l00320">virtio-i2c-device:320</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Virtqueue_html"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Virtqueue.html">L4virtio::Svr::Virtqueue</a></div><div class="ttdoc">Virtqueue implementation for the device.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00087">virtio:88</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Virtqueue_1_1Desc_html"><div class="ttname"><a href="classL4virtio_1_1Virtqueue_1_1Desc.html">L4virtio::Virtqueue::Desc</a></div><div class="ttdoc">Descriptor in the descriptor table.</div><div class="ttdef"><b>Definition</b> <a href="virtqueue_source.html#l00086">virtqueue:87</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Virtqueue_1_1Desc_html_a55a515e923e62893696c1e6c09ffb62b"><div class="ttname"><a href="classL4virtio_1_1Virtqueue_1_1Desc.html#a55a515e923e62893696c1e6c09ffb62b">L4virtio::Virtqueue::Desc::len</a></div><div class="ttdeci">l4_uint32_t len</div><div class="ttdoc">Length of described buffer.</div><div class="ttdef"><b>Definition</b> <a href="virtqueue_source.html#l00109">virtqueue:109</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Virtqueue_1_1Desc_html_a8aad49eded68125ad5e94d0688d09828"><div class="ttname"><a href="classL4virtio_1_1Virtqueue_1_1Desc.html#a8aad49eded68125ad5e94d0688d09828">L4virtio::Virtqueue::Desc::addr</a></div><div class="ttdeci">Ptr&lt; void &gt; addr</div><div class="ttdoc">Address stored in descriptor.</div><div class="ttdef"><b>Definition</b> <a href="virtqueue_source.html#l00108">virtqueue:108</a></div></div>
<div class="ttc" id="aerror__helper_html"><div class="ttname"><a href="error__helper.html">error_helper</a></div><div class="ttdoc">Error helper.</div></div>
<div class="ttc" id="agroup__l4__basic__types_html_ga4087b991c40c0d2fcde9ca331049a4d4"><div class="ttname"><a href="group__l4__basic__types.html#ga4087b991c40c0d2fcde9ca331049a4d4">l4_addr_t</a></div><div class="ttdeci">unsigned long l4_addr_t</div><div class="ttdoc">Address type.</div><div class="ttdef"><b>Definition</b> <a href="l4_2sys_2l4int_8h_source.html#l00034">l4int.h:34</a></div></div>
<div class="ttc" id="agroup__l4__basic__types_html_ga9678dc2e6bf3e4d8ec950162576b0fad"><div class="ttname"><a href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a></div><div class="ttdeci">unsigned char l4_uint8_t</div><div class="ttdoc">Unsigned 8bit value.</div><div class="ttdef"><b>Definition</b> <a href="l4_2sys_2l4int_8h_source.html#l00025">l4int.h:25</a></div></div>
<div class="ttc" id="agroup__l4__basic__types_html_gac1d09f3e382e711b776931f10e6e1e5a"><div class="ttname"><a href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a></div><div class="ttdeci">unsigned int l4_uint32_t</div><div class="ttdoc">Unsigned 32bit value.</div><div class="ttdef"><b>Definition</b> <a href="l4_2sys_2l4int_8h_source.html#l00029">l4int.h:29</a></div></div>
<div class="ttc" id="agroup__l4__basic__types_html_gae8d67914f723bf843df6f311ad2619a2"><div class="ttname"><a href="group__l4__basic__types.html#gae8d67914f723bf843df6f311ad2619a2">l4_uint16_t</a></div><div class="ttdeci">unsigned short int l4_uint16_t</div><div class="ttdoc">Unsigned 16bit value.</div><div class="ttdef"><b>Definition</b> <a href="l4_2sys_2l4int_8h_source.html#l00027">l4int.h:27</a></div></div>
<div class="ttc" id="agroup__l4__error__api_html_ggab4c8abc71ffa221a25c1ca5840a354f9a226d93ada42b58951cfe40102ae169c8"><div class="ttname"><a href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9a226d93ada42b58951cfe40102ae169c8">L4_ERANGE</a></div><div class="ttdeci">@ L4_ERANGE</div><div class="ttdoc">Range error.</div><div class="ttdef"><b>Definition</b> <a href="err_8h_source.html#l00048">err.h:48</a></div></div>
<div class="ttc" id="agroup__l4__error__api_html_ggab4c8abc71ffa221a25c1ca5840a354f9aca91ea3bdb5bd82f63784ee66b489d5e"><div class="ttname"><a href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9aca91ea3bdb5bd82f63784ee66b489d5e">L4_EOK</a></div><div class="ttdeci">@ L4_EOK</div><div class="ttdoc">Ok.</div><div class="ttdef"><b>Definition</b> <a href="err_8h_source.html#l00032">err.h:32</a></div></div>
<div class="ttc" id="agroup__l4sys__defines_html_ga3df4200910f2664b97397c23693beeb0"><div class="ttname"><a href="group__l4sys__defines.html#ga3df4200910f2664b97397c23693beeb0">L4_UNLIKELY</a></div><div class="ttdeci">#define L4_UNLIKELY(x)</div><div class="ttdoc">Expression is unlikely to execute.</div><div class="ttdef"><b>Definition</b> <a href="compiler_8h_source.html#l00284">compiler.h:284</a></div></div>
<div class="ttc" id="agroup__l4virtio__transport_html_gga01d1e713668a8ee48f1e34f428cea8d0ab8ea6c40b0611434c90ffee0bb729342"><div class="ttname"><a href="group__l4virtio__transport.html#gga01d1e713668a8ee48f1e34f428cea8d0ab8ea6c40b0611434c90ffee0bb729342">L4VIRTIO_FEATURE_VERSION_1</a></div><div class="ttdeci">@ L4VIRTIO_FEATURE_VERSION_1</div><div class="ttdoc">Virtio protocol version 1 supported. Must be 1 for L4virtio.</div><div class="ttdef"><b>Definition</b> <a href="virtio_8h_source.html#l00101">virtio.h:101</a></div></div>
<div class="ttc" id="agroup__l4virtio__transport_html_ggaa3812d621d81dd6a7101d739153b6c3baa244c71f0cb8ddbe685b37ea19ef805c"><div class="ttname"><a href="group__l4virtio__transport.html#ggaa3812d621d81dd6a7101d739153b6c3baa244c71f0cb8ddbe685b37ea19ef805c">L4VIRTIO_ID_I2C</a></div><div class="ttdeci">@ L4VIRTIO_ID_I2C</div><div class="ttdoc">I2C device.</div><div class="ttdef"><b>Definition</b> <a href="virtio_8h_source.html#l00080">virtio.h:80</a></div></div>
<div class="ttc" id="agroup__l4virtio__transport_html_ggafc85528edcc3d740233740766f759fdda764bdaf5cff15bd8cd27f402f6e273b2"><div class="ttname"><a href="group__l4virtio__transport.html#ggafc85528edcc3d740233740766f759fdda764bdaf5cff15bd8cd27f402f6e273b2">L4VIRTIO_IRQ_STATUS_VRING</a></div><div class="ttdeci">@ L4VIRTIO_IRQ_STATUS_VRING</div><div class="ttdoc">VRING IRQ pending flag.</div><div class="ttdef"><b>Definition</b> <a href="virtio_8h_source.html#l00112">virtio.h:112</a></div></div>
<div class="ttc" id="agroup__l4virtio__transport_html_ggafc85528edcc3d740233740766f759fdda7e21836e79756a2e357e1cbc2509090d"><div class="ttname"><a href="group__l4virtio__transport.html#ggafc85528edcc3d740233740766f759fdda7e21836e79756a2e357e1cbc2509090d">L4VIRTIO_IRQ_STATUS_CONFIG</a></div><div class="ttdeci">@ L4VIRTIO_IRQ_STATUS_CONFIG</div><div class="ttdoc">CONFIG IRQ pending flag.</div><div class="ttdef"><b>Definition</b> <a href="virtio_8h_source.html#l00113">virtio.h:113</a></div></div>
<div class="ttc" id="anamespaceL4Re_html_a3f17984019f06676a7e3eecb41bbb0bb"><div class="ttname"><a href="namespaceL4Re.html#a3f17984019f06676a7e3eecb41bbb0bb">L4Re::chksys</a></div><div class="ttdeci">long chksys(long err, char const *extra=&quot;&quot;, long ret=0)</div><div class="ttdoc">Generate C++ exception on error.</div><div class="ttdef"><b>Definition</b> <a href="error__helper_source.html#l00072">error_helper:72</a></div></div>
<div class="ttc" id="anamespaceL4Re_html_a64b057254a760643ba67a9ed452fede8"><div class="ttname"><a href="namespaceL4Re.html#a64b057254a760643ba67a9ed452fede8">L4Re::chkcap</a></div><div class="ttdeci">T chkcap(T &amp;&amp;cap, char const *extra=&quot;&quot;, long err=-L4_ENOMEM)</div><div class="ttdoc">Check for valid capability or raise C++ exception.</div><div class="ttdef"><b>Definition</b> <a href="error__helper_source.html#l00149">error_helper:149</a></div></div>
<div class="ttc" id="anamespaceL4Re_html_ae21329b88c6ffc4917048e8d9564ea99"><div class="ttname"><a href="namespaceL4Re.html#ae21329b88c6ffc4917048e8d9564ea99">L4Re::chkipc</a></div><div class="ttdeci">l4_msgtag_t chkipc(l4_msgtag_t tag, char const *extra=&quot;&quot;, l4_utcb_t *utcb=l4_utcb())</div><div class="ttdoc">Test a message tag for IPC errors.</div><div class="ttdef"><b>Definition</b> <a href="error__helper_source.html#l00180">error_helper:180</a></div></div>
<div class="ttc" id="anamespaceL4_html_ac674c8e32808f504f4fa0aa8e5276e84"><div class="ttname"><a href="namespaceL4.html#ac674c8e32808f504f4fa0aa8e5276e84">L4::cap_cast</a></div><div class="ttdeci">Cap&lt; T &gt; cap_cast(Cap&lt; F &gt; const &amp;c) noexcept</div><div class="ttdoc">static_cast for capabilities.</div><div class="ttdef"><b>Definition</b> <a href="capability_8h_source.html#l00416">capability.h:416</a></div></div>
<div class="ttc" id="anamespaceL4virtio_html"><div class="ttname"><a href="namespaceL4virtio.html">L4virtio</a></div><div class="ttdoc">L4-VIRTIO Transport C++ API.</div><div class="ttdef"><b>Definition</b> <a href="client_2l4virtio_source.html#l00026">l4virtio:26</a></div></div>
<div class="ttc" id="apair_html"><div class="ttname"><a href="pair.html">pair</a></div><div class="ttdoc">Pair implementation.</div></div>
<div class="ttc" id="astructL4_1_1Epiface__t_html"><div class="ttname"><a href="structL4_1_1Epiface__t.html">L4::Epiface_t</a></div><div class="ttdoc">Epiface implementation for Kobject-based interface implementations.</div><div class="ttdef"><b>Definition</b> <a href="ipc__epiface_source.html#l00503">ipc_epiface:504</a></div></div>
<div class="ttc" id="astructL4_1_1Epiface_html_a9605834c855375364504bd0f7ae78273"><div class="ttname"><a href="structL4_1_1Epiface.html#a9605834c855375364504bd0f7ae78273">L4::Epiface::server_iface</a></div><div class="ttdeci">Server_iface * server_iface() const</div><div class="ttdoc">Get pointer to server interface at which the object is currently registered.</div><div class="ttdef"><b>Definition</b> <a href="ipc__epiface_source.html#l00213">ipc_epiface:213</a></div></div>
<div class="ttc" id="astructL4_1_1Irqep__t_html"><div class="ttname"><a href="structL4_1_1Irqep__t.html">L4::Irqep_t</a></div><div class="ttdoc">Epiface implementation for interrupt handlers.</div><div class="ttdef"><b>Definition</b> <a href="ipc__epiface_source.html#l00282">ipc_epiface:283</a></div></div>
<div class="ttc" id="astructL4virtio_1_1Svr_1_1Data__buffer_html"><div class="ttname"><a href="structL4virtio_1_1Svr_1_1Data__buffer.html">L4virtio::Svr::Data_buffer</a></div><div class="ttdoc">Abstract data buffer.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00306">virtio:307</a></div></div>
<div class="ttc" id="astructL4virtio_1_1Svr_1_1Data__buffer_html_a4c105bf354d6663f323efeb81c74ebc2"><div class="ttname"><a href="structL4virtio_1_1Svr_1_1Data__buffer.html#a4c105bf354d6663f323efeb81c74ebc2">L4virtio::Svr::Data_buffer::left</a></div><div class="ttdeci">l4_uint32_t left</div><div class="ttdoc">Bytes left in buffer.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00309">virtio:309</a></div></div>
<div class="ttc" id="astructL4virtio_1_1Svr_1_1Data__buffer_html_ac58e770774164d220267be04fb97b551"><div class="ttname"><a href="structL4virtio_1_1Svr_1_1Data__buffer.html#ac58e770774164d220267be04fb97b551">L4virtio::Svr::Data_buffer::pos</a></div><div class="ttdeci">char * pos</div><div class="ttdoc">Current buffer position.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00308">virtio:308</a></div></div>
<div class="ttc" id="astructL4virtio_1_1Svr_1_1Dev__features_html_a01bb482bee85fd60f8685ed5a55fde79"><div class="ttname"><a href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">L4virtio::Svr::Dev_features::raw</a></div><div class="ttdeci">l4_uint32_t raw</div><div class="ttdoc">The raw value of the features bitmap.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00068">virtio:68</a></div></div>
<div class="ttc" id="astructcxx_1_1Pair_html"><div class="ttname"><a href="structcxx_1_1Pair.html">cxx::Pair</a></div><div class="ttdoc">Pair of two values.</div><div class="ttdef"><b>Definition</b> <a href="pair_source.html#l00027">pair:28</a></div></div>
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