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Viktor Reusch
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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:ft=cpp</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">/* SPDX-License-Identifier: MIT */</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">/*</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * Copyright (C) 2017-2021, 2024 Kernkonzept GmbH.</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> * Author(s): Sarah Hoffmann &lt;sarah.hoffmann@kernkonzept.com&gt;</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> *</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><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span> </div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#include &lt;l4/cxx/unique_ptr&gt;</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="util_2unique__cap.html">l4/re/util/unique_cap</a>&gt;</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include &lt;climits&gt;</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> </div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include &lt;l4/l4virtio/virtio.h&gt;</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include &lt;l4/l4virtio/virtio_block.h&gt;</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include &lt;l4/l4virtio/server/l4virtio&gt;</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include &lt;l4/sys/cxx/ipc_epiface&gt;</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceL4virtio.html">L4virtio</a> { <span class="keyword">namespace </span>Svr {</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Ds_data&gt; <span class="keyword">class </span><a class="code hl_class" href="classL4virtio_1_1Svr_1_1Block__dev__base.html">Block_dev_base</a>;</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Ds_data&gt;</div>
<div class="foldopen" id="foldopen00028" data-start="{" data-end="};">
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__request.html"> 28</a></span><span class="keyword">class </span>Block_request</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span>{</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">friend</span> <span class="keyword">class </span><a class="code hl_class" href="classL4virtio_1_1Svr_1_1Block__dev__base.html">Block_dev_base</a>&lt;Ds_data&gt;;</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">enum</span> { Header_size = <span class="keyword">sizeof</span>(<a class="code hl_struct" href="structl4virtio__block__header__t.html">l4virtio_block_header_t</a>) };</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">struct </span>Data_block</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> {</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <a class="code hl_class" href="classL4virtio_1_1Svr_1_1Driver__mem__region__t.html">Driver_mem_region_t&lt;Ds_data&gt;</a> *mem;</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <span class="keywordtype">void</span> *addr;</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> len;</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> </div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> Data_block() = <span class="keywordflow">default</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> Data_block(<a class="code hl_class" href="classL4virtio_1_1Svr_1_1Driver__mem__region__t.html">Driver_mem_region_t&lt;Ds_data&gt;</a> *m, <a class="code hl_class" href="classL4virtio_1_1Virtqueue_1_1Desc.html">Virtqueue::Desc</a> <span class="keyword">const</span> &amp;desc,</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <a class="code hl_class" href="classL4virtio_1_1Svr_1_1Request__processor.html">Request_processor</a> <span class="keyword">const</span> *)</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> : mem(m), addr(m-&gt;<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Driver__mem__region__t.html#af08e01da1fdcbc0f0f4c4d90da5d0469">local</a>(desc.<a class="code hl_variable" href="classL4virtio_1_1Virtqueue_1_1Desc.html#a8aad49eded68125ad5e94d0688d09828">addr</a>)), len(desc.<a class="code hl_variable" href="classL4virtio_1_1Virtqueue_1_1Desc.html#a55a515e923e62893696c1e6c09ffb62b">len</a>)</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> {}</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> };</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> </div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span></div>
<div class="foldopen" id="foldopen00063" data-start="{" data-end="}">
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__request.html#a5f6bf664cda7dfe4f82d8726f6c33099"> 63</a></span> <span class="keywordtype">unsigned</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__request.html#a5f6bf664cda7dfe4f82d8726f6c33099">data_size</a>()<span class="keyword"> const</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <a class="code hl_class" href="classL4virtio_1_1Svr_1_1Request__processor.html">Request_processor</a> rp;</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> Data_block data;</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> rp.<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Request__processor.html#abcf6a6b8bf80e0d73d45b5eb9e817abd">start</a>(_mem_list, _request, &amp;data);</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> <span class="keywordtype">unsigned</span> total = data.len;</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> <span class="keywordflow">try</span></div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> {</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keywordflow">while</span> (rp.<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Request__processor.html#a9038c26764d07c867d6e70cd6e04157d">has_more</a>())</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> {</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> rp.<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Request__processor.html#a0bb9280caa7b899486ccd83bcf0588cd">next</a>(_mem_list, &amp;data);</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> total += data.len;</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> }</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> }</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <span class="keywordflow">catch</span> (<a class="code hl_struct" href="structL4virtio_1_1Svr_1_1Bad__descriptor.html">Bad_descriptor</a> <span class="keyword">const</span> &amp;e)</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> {</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="comment">// need to convert the exception because e contains a raw pointer to rp</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keywordflow">throw</span> <a class="code hl_class" href="classL4_1_1Runtime__error.html">L4::Runtime_error</a>(-<a class="code hl_enumvalue" href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9abf18baaba897b65a370e903268cbac91">L4_EIO</a>, <span class="stringliteral">&quot;bad virtio descriptor&quot;</span>);</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> }</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keywordflow">if</span> (total &lt; Header_size + 1)</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keywordflow">throw</span> <a class="code hl_class" href="classL4_1_1Runtime__error.html">L4::Runtime_error</a>(-<a class="code hl_enumvalue" href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9abf18baaba897b65a370e903268cbac91">L4_EIO</a>, <span class="stringliteral">&quot;virtio request too short&quot;</span>);</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keywordflow">return</span> total - Header_size - 1;</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> }</div>
</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span></div>
<div class="foldopen" id="foldopen00095" data-start="{" data-end="}">
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__request.html#a7b714611659c91ffd67e9d8c20102ab6"> 95</a></span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__request.html#a7b714611659c91ffd67e9d8c20102ab6">has_more</a>()</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> <span class="comment">// peek into the remaining data</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keywordflow">while</span> (_data.len == 0 &amp;&amp; _rp.has_more())</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> _rp.next(_mem_list, &amp;_data);</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> </div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="comment">// there always must be one byte left for status</span></div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keywordflow">return</span> (_data.len &gt; 1 || _rp.has_more());</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> }</div>
</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span></div>
<div class="foldopen" id="foldopen00113" data-start="{" data-end="}">
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__request.html#aa2cb429f504f6568d6e25c13936d5be7"> 113</a></span> Data_block <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__request.html#aa2cb429f504f6568d6e25c13936d5be7">next_block</a>()</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> Data_block out;</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> </div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="keywordflow">if</span> (_data.len == 0)</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> {</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <span class="keywordflow">if</span> (!_rp.has_more())</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="keywordflow">throw</span> <a class="code hl_class" href="classL4_1_1Runtime__error.html">L4::Runtime_error</a>(-<a class="code hl_enumvalue" href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9a0230b4251e0ab6c7bf80054fb55465bb">L4_EEXIST</a>,</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="stringliteral">&quot;No more data blocks in virtio request&quot;</span>);</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <span class="keywordflow">if</span> (_todo_blocks == 0)</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordflow">throw</span> <a class="code hl_struct" href="structL4virtio_1_1Svr_1_1Bad__descriptor.html">Bad_descriptor</a>(&amp;_rp, <a class="code hl_enumvalue" href="structL4virtio_1_1Svr_1_1Bad__descriptor.html#a6d0361d240b52210a4a6bcb5570a6a25ad151656f5a2cc0c2ec14792310244f5b">Bad_descriptor::Bad_size</a>);</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> --_todo_blocks;</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> _rp.next(_mem_list, &amp;_data);</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> </div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keywordflow">if</span> (_data.len &gt; _max_block_size)</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <span class="keywordflow">throw</span> <a class="code hl_struct" href="structL4virtio_1_1Svr_1_1Bad__descriptor.html">Bad_descriptor</a>(&amp;_rp, <a class="code hl_enumvalue" href="structL4virtio_1_1Svr_1_1Bad__descriptor.html#a6d0361d240b52210a4a6bcb5570a6a25ad151656f5a2cc0c2ec14792310244f5b">Bad_descriptor::Bad_size</a>);</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> </div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> out = _data;</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> </div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="keywordflow">if</span> (!_rp.has_more())</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> {</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> --(out.len);</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> _data.len = 1;</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> _data.addr = <span class="keyword">static_cast&lt;</span><span class="keywordtype">char</span> *<span class="keyword">&gt;</span>(_data.addr) + out.len;</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> }</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> _data.len = 0; <span class="comment">// is consumed</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> <span class="keywordflow">return</span> out;</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> }</div>
</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span></div>
<div class="foldopen" id="foldopen00148" data-start="{" data-end="}">
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__request.html#a7590a5c56b88fdcb63560fb642668fa4"> 148</a></span> <a class="code hl_struct" href="structl4virtio__block__header__t.html">l4virtio_block_header_t</a> <span class="keyword">const</span> &amp;<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__request.html#a7590a5c56b88fdcb63560fb642668fa4">header</a>()<span class="keyword"> const</span></div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span><span class="keyword"> </span>{ <span class="keywordflow">return</span> _header; }</div>
</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="keyword">private</span>:</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <a class="code hl_class" href="classL4virtio_1_1Svr_1_1Block__request.html">Block_request</a>(Virtqueue::Request req, <a class="code hl_class" href="classL4virtio_1_1Svr_1_1Driver__mem__list__t.html">Driver_mem_list_t&lt;Ds_data&gt;</a> *mem_list,</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="keywordtype">unsigned</span> max_blocks, <a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> max_block_size)</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> : _mem_list(mem_list),</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> _request(req),</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> _todo_blocks(max_blocks),</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> _max_block_size(max_block_size)</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> {</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <span class="comment">// read header which should be in the first block</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> _rp.<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Request__processor.html#abcf6a6b8bf80e0d73d45b5eb9e817abd">start</a>(mem_list, _request, &amp;_data);</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> --_todo_blocks;</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> </div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> <span class="keywordflow">if</span> (_data.len &lt; Header_size)</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> <span class="keywordflow">throw</span> <a class="code hl_struct" href="structL4virtio_1_1Svr_1_1Bad__descriptor.html">Bad_descriptor</a>(&amp;_rp, <a class="code hl_enumvalue" href="structL4virtio_1_1Svr_1_1Bad__descriptor.html#a6d0361d240b52210a4a6bcb5570a6a25ad151656f5a2cc0c2ec14792310244f5b">Bad_descriptor::Bad_size</a>);</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> </div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> _header = *(<span class="keyword">static_cast&lt;</span><a class="code hl_struct" href="structl4virtio__block__header__t.html">l4virtio_block_header_t</a> *<span class="keyword">&gt;</span>(_data.addr));</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> _data.addr = <span class="keyword">static_cast&lt;</span><span class="keywordtype">char</span> *<span class="keyword">&gt;</span>(_data.addr) + Header_size;</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> _data.len -= Header_size;</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> </div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> <span class="comment">// if there is no space for status bit we cannot really recover</span></div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <span class="keywordflow">if</span> (!_rp.<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Request__processor.html#a9038c26764d07c867d6e70cd6e04157d">has_more</a>() &amp;&amp; _data.len == 0)</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> <span class="keywordflow">throw</span> <a class="code hl_struct" href="structL4virtio_1_1Svr_1_1Bad__descriptor.html">Bad_descriptor</a>(&amp;_rp, <a class="code hl_enumvalue" href="structL4virtio_1_1Svr_1_1Bad__descriptor.html#a6d0361d240b52210a4a6bcb5570a6a25ad151656f5a2cc0c2ec14792310244f5b">Bad_descriptor::Bad_size</a>);</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> }</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> </div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> <span class="keywordtype">int</span> release_request(<a class="code hl_class" href="classL4virtio_1_1Virtqueue.html">Virtqueue</a> *queue, <a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> status, <span class="keywordtype">unsigned</span> sz)</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> {</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> <span class="comment">// write back status</span></div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <span class="comment">// If there was an error on the way or the status byte is in its</span></div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> <span class="comment">// own block, fast-forward to the last block.</span></div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="keywordflow">if</span> (_rp.<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Request__processor.html#a9038c26764d07c867d6e70cd6e04157d">has_more</a>())</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> {</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> <span class="keywordflow">while</span> (_rp.<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Request__processor.html#a0bb9280caa7b899486ccd83bcf0588cd">next</a>(_mem_list, &amp;_data) &amp;&amp; _todo_blocks &gt; 0)</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> --_todo_blocks;</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> <span class="keywordflow">if</span> (_todo_blocks &gt; 0 &amp;&amp; _data.len &gt; 0)</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> *(<span class="keyword">static_cast&lt;</span><a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> *<span class="keyword">&gt;</span>(_data.addr) + _data.len - 1) = status;</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> <span class="keywordflow">return</span> -<a class="code hl_enumvalue" href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9abf18baaba897b65a370e903268cbac91">L4_EIO</a>; <span class="comment">// too many data blocks</span></div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> }</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> <span class="keywordflow">else</span> <span class="keywordflow">if</span> (_data.len &gt; 0)</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> *(<span class="keyword">static_cast&lt;</span><a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> *<span class="keyword">&gt;</span>(_data.addr)) = status;</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> <span class="keywordflow">return</span> -<a class="code hl_enumvalue" href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9abf18baaba897b65a370e903268cbac91">L4_EIO</a>; <span class="comment">// no space for final status byte</span></div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> </div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> <span class="comment">// now release the head</span></div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> queue-&gt;consumed(_request, sz);</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> </div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</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="l00200" name="l00200"></a><span class="lineno"> 200</span> }</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span></div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> Driver_mem_list_t&lt;Ds_data&gt; *_mem_list;</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> <a class="code hl_typedef" href="group__l4virtio__block.html#gaff308435ef6047fb0934285b223be657">l4virtio_block_header_t</a> _header;</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> Request_processor _rp;</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> Data_block _data;</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span></div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> Virtqueue::Request _request;</div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> <span class="keywordtype">unsigned</span> _todo_blocks;</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> <a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> _max_block_size;</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span>};</div>
</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">struct </span>Block_features : <span class="keyword">public</span> Dev_config::Features</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span>{</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> Block_features() = <span class="keywordflow">default</span>;</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> Block_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>) : 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="l00227" name="l00227"></a><span class="lineno"> 227</span></div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> CXX_BITFIELD_MEMBER( 1, 1, size_max, <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>);</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> CXX_BITFIELD_MEMBER( 2, 2, seg_max, <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>);</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> CXX_BITFIELD_MEMBER( 4, 4, geometry, <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>);</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> CXX_BITFIELD_MEMBER( 5, 5, ro, <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>);</div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> CXX_BITFIELD_MEMBER( 6, 6, blk_size, <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>);</div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> CXX_BITFIELD_MEMBER( 9, 9, flush, <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>);</div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span> CXX_BITFIELD_MEMBER(10, 10, topology, <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>);</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> CXX_BITFIELD_MEMBER(11, 11, config_wce, <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>);</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> CXX_BITFIELD_MEMBER(12, 12, mq, <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>);</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> CXX_BITFIELD_MEMBER(13, 13, discard, <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>);</div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> CXX_BITFIELD_MEMBER(14, 14, write_zeroes, <a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Dev__features.html#a01bb482bee85fd60f8685ed5a55fde79">raw</a>);</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</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="l00258" name="l00258"></a><span class="lineno"> 258</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Ds_data&gt;</div>
<div class="foldopen" id="foldopen00259" data-start="{" data-end="};">
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html"> 259</a></span><span class="keyword">class </span><a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a71594b4dbd7adcf9772e48dac00a98c7">Block_dev_base</a> : <span class="keyword">public</span> <a class="code hl_class" href="classL4virtio_1_1Svr_1_1Device__t.html">L4virtio::Svr::Device_t</a>&lt;Ds_data&gt;</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span>{</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> <a class="code hl_typedef" href="namespaceL4Re_1_1Util.html#a0efccd325a19246334922e58dd973914">L4Re::Util::Unique_cap&lt;L4::Irq&gt;</a> _kick_guest_irq;</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> <a class="code hl_class" href="classL4virtio_1_1Svr_1_1Virtqueue.html">Virtqueue</a> _queue;</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> <span class="keywordtype">unsigned</span> _vq_max;</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> <a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> _max_block_size = UINT_MAX;</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> Dev_config_t&lt;l4virtio_block_config_t&gt; _dev_config;</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> </div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> <span class="keyword">typedef</span> <a class="code hl_class" href="classL4virtio_1_1Svr_1_1Block__request.html">Block_request&lt;Ds_data&gt;</a> Request;</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> </div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span><span class="keyword">protected</span>:</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> Block_features negotiated_features()<span class="keyword"> const</span></div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span><span class="keyword"> </span>{ <span class="keywordflow">return</span> _dev_config.negotiated_features(0); }</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> </div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> Block_features device_features()<span class="keyword"> const</span></div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span><span class="keyword"> </span>{ <span class="keywordflow">return</span> _dev_config.host_features(0); }</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> </div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> <span class="keywordtype">void</span> set_device_features(Block_features df)</div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span> { _dev_config.host_features(0) = df.raw; }</div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span></div>
<div class="foldopen" id="foldopen00290" data-start="{" data-end="}">
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a8595fd3bf302a2f187ff512b50512f8d"> 290</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a8595fd3bf302a2f187ff512b50512f8d">set_size_max</a>(<a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> sz)</div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span> {</div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> _dev_config.priv_config()-&gt;size_max = sz;</div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span> Block_features df = device_features();</div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span> df.size_max() = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span> set_device_features(df);</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> _max_block_size = sz;</div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> }</div>
</div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span></div>
<div class="foldopen" id="foldopen00304" data-start="{" data-end="}">
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#ac54727ca73bfb46a2d22be44987c9cfc"> 304</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#ac54727ca73bfb46a2d22be44987c9cfc">set_seg_max</a>(<a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> sz)</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> _dev_config.priv_config()-&gt;seg_max = sz;</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span> Block_features df = device_features();</div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span> df.seg_max() = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span> set_device_features(df);</div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span> }</div>
</div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</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_1Block__dev__base.html#abfc73067f1ba512e3d60b3fe0f047e38"> 315</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#abfc73067f1ba512e3d60b3fe0f047e38">set_geometry</a>(<a class="code hl_typedef" href="group__l4__basic__types.html#gae8d67914f723bf843df6f311ad2619a2">l4_uint16_t</a> cylinders, <a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> heads, <a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> sectors)</div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span> {</div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span> <a class="code hl_struct" href="structl4virtio__block__config__t.html">l4virtio_block_config_t</a> <span class="keyword">volatile</span> *pc = _dev_config.priv_config();</div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span> pc-&gt;geometry.cylinders = cylinders;</div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno"> 319</span> pc-&gt;geometry.heads = heads;</div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno"> 320</span> pc-&gt;geometry.sectors = sectors;</div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span> Block_features df = device_features();</div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno"> 322</span> df.geometry() = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span> set_device_features(df);</div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno"> 324</span> }</div>
</div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span></div>
<div class="foldopen" id="foldopen00332" data-start="{" data-end="}">
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a4836579882ae39b26ebcb72204ca5a01"> 332</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a4836579882ae39b26ebcb72204ca5a01">set_blk_size</a>(<a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> sz)</div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</span> {</div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno"> 334</span> _dev_config.priv_config()-&gt;blk_size = sz;</div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span> Block_features df = device_features();</div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno"> 336</span> df.blk_size() = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno"> 337</span> set_device_features(df);</div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno"> 338</span> }</div>
</div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno"> 339</span></div>
<div class="foldopen" id="foldopen00348" data-start="{" data-end="}">
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#ad4e9c13e6c652cc6fe55b648a9881abc"> 348</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#ad4e9c13e6c652cc6fe55b648a9881abc">set_topology</a>(<a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> physical_block_exp,</div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno"> 349</span> <a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> alignment_offset,</div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno"> 350</span> <a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> min_io_size,</div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno"> 351</span> <a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> opt_io_size)</div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno"> 352</span> {</div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno"> 353</span> <a class="code hl_struct" href="structl4virtio__block__config__t.html">l4virtio_block_config_t</a> <span class="keyword">volatile</span> *pc = _dev_config.priv_config();</div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno"> 354</span> pc-&gt;topology.physical_block_exp = physical_block_exp;</div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno"> 355</span> pc-&gt;topology.alignment_offset = alignment_offset;</div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno"> 356</span> pc-&gt;topology.min_io_size = min_io_size;</div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno"> 357</span> pc-&gt;topology.opt_io_size = opt_io_size;</div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno"> 358</span> Block_features df = device_features();</div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno"> 359</span> df.topology() = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno"> 360</span> set_device_features(df);</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="foldopen00364" data-start="{" data-end="}">
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a73469de4686eb71455b5edb3baf88622"> 364</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a73469de4686eb71455b5edb3baf88622">set_flush</a>()</div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno"> 365</span> {</div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno"> 366</span> Block_features df = device_features();</div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno"> 367</span> df.flush() = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno"> 368</span> set_device_features(df);</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="foldopen" id="foldopen00375" data-start="{" data-end="}">
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a523507cc71de8b4f7b549424e0e200fe"> 375</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a523507cc71de8b4f7b549424e0e200fe">set_config_wce</a>(<a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> writeback)</div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno"> 376</span> {</div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno"> 377</span> <a class="code hl_struct" href="structl4virtio__block__config__t.html">l4virtio_block_config_t</a> <span class="keyword">volatile</span> *pc = _dev_config.priv_config();</div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno"> 378</span> pc-&gt;writeback = writeback;</div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno"> 379</span> Block_features df = device_features();</div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno"> 380</span> df.config_wce() = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno"> 381</span> set_device_features(df);</div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno"> 382</span> }</div>
</div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno"> 383</span></div>
<div class="foldopen" id="foldopen00388" data-start="{" data-end="}">
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a41ce247545113631dc5a3bcac7a70abc"> 388</a></span> <a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a41ce247545113631dc5a3bcac7a70abc">get_writeback</a>()</div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno"> 389</span> {</div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno"> 390</span> <a class="code hl_struct" href="structl4virtio__block__config__t.html">l4virtio_block_config_t</a> <span class="keyword">volatile</span> *pc = _dev_config.priv_config();</div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno"> 391</span> <span class="keywordflow">return</span> pc-&gt;writeback;</div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno"> 392</span> }</div>
</div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno"> 393</span></div>
<div class="foldopen" id="foldopen00402" data-start="{" data-end="}">
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#ab1fd85e2fb0cc819c5739ecc1911882a"> 402</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#ab1fd85e2fb0cc819c5739ecc1911882a">set_discard</a>(<a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> max_discard_sectors, <a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> max_discard_seg,</div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno"> 403</span> <a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> discard_sector_alignment)</div>
<div class="line"><a id="l00404" name="l00404"></a><span class="lineno"> 404</span> {</div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno"> 405</span> <a class="code hl_struct" href="structl4virtio__block__config__t.html">l4virtio_block_config_t</a> <span class="keyword">volatile</span> *pc = _dev_config.priv_config();</div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno"> 406</span> pc-&gt;max_discard_sectors = max_discard_sectors;</div>
<div class="line"><a id="l00407" name="l00407"></a><span class="lineno"> 407</span> pc-&gt;max_discard_seg = max_discard_seg;</div>
<div class="line"><a id="l00408" name="l00408"></a><span class="lineno"> 408</span> pc-&gt;discard_sector_alignment = discard_sector_alignment;</div>
<div class="line"><a id="l00409" name="l00409"></a><span class="lineno"> 409</span> Block_features df = device_features();</div>
<div class="line"><a id="l00410" name="l00410"></a><span class="lineno"> 410</span> df.discard() = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00411" name="l00411"></a><span class="lineno"> 411</span> set_device_features(df);</div>
<div class="line"><a id="l00412" name="l00412"></a><span class="lineno"> 412</span> }</div>
</div>
<div class="line"><a id="l00413" name="l00413"></a><span class="lineno"> 413</span></div>
<div class="foldopen" id="foldopen00422" data-start="{" data-end="}">
<div class="line"><a id="l00422" name="l00422"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a29efdfb37c14cba25ea4f1c71cfe0cf1"> 422</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a29efdfb37c14cba25ea4f1c71cfe0cf1">set_write_zeroes</a>(<a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> max_write_zeroes_sectors,</div>
<div class="line"><a id="l00423" name="l00423"></a><span class="lineno"> 423</span> <a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> max_write_zeroes_seg,</div>
<div class="line"><a id="l00424" name="l00424"></a><span class="lineno"> 424</span> <a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> write_zeroes_may_unmap)</div>
<div class="line"><a id="l00425" name="l00425"></a><span class="lineno"> 425</span> {</div>
<div class="line"><a id="l00426" name="l00426"></a><span class="lineno"> 426</span> <a class="code hl_struct" href="structl4virtio__block__config__t.html">l4virtio_block_config_t</a> <span class="keyword">volatile</span> *pc = _dev_config.priv_config();</div>
<div class="line"><a id="l00427" name="l00427"></a><span class="lineno"> 427</span> pc-&gt;max_write_zeroes_sectors = max_write_zeroes_sectors;</div>
<div class="line"><a id="l00428" name="l00428"></a><span class="lineno"> 428</span> pc-&gt;max_write_zeroes_seg = max_write_zeroes_seg;</div>
<div class="line"><a id="l00429" name="l00429"></a><span class="lineno"> 429</span> pc-&gt;write_zeroes_may_unmap = write_zeroes_may_unmap;</div>
<div class="line"><a id="l00430" name="l00430"></a><span class="lineno"> 430</span> Block_features df = device_features();</div>
<div class="line"><a id="l00431" name="l00431"></a><span class="lineno"> 431</span> df.write_zeroes() = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00432" name="l00432"></a><span class="lineno"> 432</span> set_device_features(df);</div>
<div class="line"><a id="l00433" name="l00433"></a><span class="lineno"> 433</span> }</div>
</div>
<div class="line"><a id="l00434" name="l00434"></a><span class="lineno"> 434</span> </div>
<div class="line"><a id="l00435" name="l00435"></a><span class="lineno"> 435</span><span class="keyword">public</span>:</div>
<div class="foldopen" id="foldopen00444" data-start="{" data-end="}">
<div class="line"><a id="l00444" name="l00444"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a71594b4dbd7adcf9772e48dac00a98c7"> 444</a></span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a71594b4dbd7adcf9772e48dac00a98c7">Block_dev_base</a>(<a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> vendor, <span class="keywordtype">unsigned</span> queue_size, <a class="code hl_typedef" href="group__l4__basic__types.html#gaf3331c485014bd12a9e4f9d27a55e689">l4_uint64_t</a> capacity,</div>
<div class="line"><a id="l00445" name="l00445"></a><span class="lineno"> 445</span> <span class="keywordtype">bool</span> read_only)</div>
<div class="line"><a id="l00446" name="l00446"></a><span class="lineno"> 446</span> : <a class="code hl_namespace" href="namespaceL4virtio.html">L4virtio</a>::Svr::<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Device__t.html#a7ce755ee0579fb70926d762ba67bb66f">Device_t</a>&lt;Ds_data&gt;(&amp;_dev_config),</div>
<div class="line"><a id="l00447" name="l00447"></a><span class="lineno"> 447</span> _vq_max(queue_size),</div>
<div class="line"><a id="l00448" name="l00448"></a><span class="lineno"> 448</span> _dev_config(vendor, <a class="code hl_enumvalue" href="group__l4virtio__transport.html#ggaa3812d621d81dd6a7101d739153b6c3ba10cc3c1991081bd51ac54a45f0d407c8">L4VIRTIO_ID_BLOCK</a>, 1)</div>
<div class="line"><a id="l00449" name="l00449"></a><span class="lineno"> 449</span> {</div>
<div class="line"><a id="l00450" name="l00450"></a><span class="lineno"> 450</span> this-&gt;<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="l00451" name="l00451"></a><span class="lineno"> 451</span> </div>
<div class="line"><a id="l00452" name="l00452"></a><span class="lineno"> 452</span> Block_features df(0);</div>
<div class="line"><a id="l00453" name="l00453"></a><span class="lineno"> 453</span> df.ring_indirect_desc() = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00454" name="l00454"></a><span class="lineno"> 454</span> df.ro() = read_only;</div>
<div class="line"><a id="l00455" name="l00455"></a><span class="lineno"> 455</span> set_device_features(df);</div>
<div class="line"><a id="l00456" name="l00456"></a><span class="lineno"> 456</span> </div>
<div class="line"><a id="l00457" name="l00457"></a><span class="lineno"> 457</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="l00458" name="l00458"></a><span class="lineno"> 458</span> </div>
<div class="line"><a id="l00459" name="l00459"></a><span class="lineno"> 459</span> _dev_config.priv_config()-&gt;capacity = capacity;</div>
<div class="line"><a id="l00460" name="l00460"></a><span class="lineno"> 460</span> }</div>
</div>
<div class="line"><a id="l00461" name="l00461"></a><span class="lineno"> 461</span></div>
<div class="line"><a id="l00465" name="l00465"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a9c458714db0fe38c496c97466768db5c"> 465</a></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a9c458714db0fe38c496c97466768db5c">reset_device</a>() = 0;</div>
<div class="line"><a id="l00466" name="l00466"></a><span class="lineno"> 466</span></div>
<div class="line"><a id="l00470" name="l00470"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a3e911bba0fa756a1c2eb014dc0bd6b0a"> 470</a></span> <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a3e911bba0fa756a1c2eb014dc0bd6b0a">queue_stopped</a>() = 0;</div>
<div class="line"><a id="l00471" name="l00471"></a><span class="lineno"> 471</span></div>
<div class="foldopen" id="foldopen00483" data-start="{" data-end="}">
<div class="line"><a id="l00483" name="l00483"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#afd81130f9e38af771d43aabafa05e043"> 483</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#afd81130f9e38af771d43aabafa05e043">finalize_request</a>(cxx::unique_ptr&lt;Request&gt; req, <span class="keywordtype">unsigned</span> sz,</div>
<div class="line"><a id="l00484" name="l00484"></a><span class="lineno"> 484</span> <a class="code hl_typedef" href="group__l4__basic__types.html#ga9678dc2e6bf3e4d8ec950162576b0fad">l4_uint8_t</a> status = <a class="code hl_enumvalue" href="group__l4virtio__block.html#ggafefb8205febb8b89e612e86f0c89eaa9a52c6169e59039d478b7f4a9faec15f33">L4VIRTIO_BLOCK_S_OK</a>)</div>
<div class="line"><a id="l00485" name="l00485"></a><span class="lineno"> 485</span> {</div>
<div class="line"><a id="l00486" name="l00486"></a><span class="lineno"> 486</span> <span class="keywordflow">if</span> (_dev_config.status().fail_state() || !_queue.ready())</div>
<div class="line"><a id="l00487" name="l00487"></a><span class="lineno"> 487</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00488" name="l00488"></a><span class="lineno"> 488</span> </div>
<div class="line"><a id="l00489" name="l00489"></a><span class="lineno"> 489</span> <span class="keywordflow">if</span> (req-&gt;release_request(&amp;_queue, status, sz) &lt; 0)</div>
<div class="line"><a id="l00490" name="l00490"></a><span class="lineno"> 490</span> this-&gt;<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Device__t.html#a29f780ecb04509d8b72f4a155b073c74">device_error</a>();</div>
<div class="line"><a id="l00491" name="l00491"></a><span class="lineno"> 491</span> </div>
<div class="line"><a id="l00492" name="l00492"></a><span class="lineno"> 492</span> <span class="keywordflow">if</span> (_queue.<a class="code hl_function" href="classL4virtio_1_1Virtqueue.html#a2aa2efa2e5f6ee73423ec9beab40232a">no_notify_guest</a>())</div>
<div class="line"><a id="l00493" name="l00493"></a><span class="lineno"> 493</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00494" name="l00494"></a><span class="lineno"> 494</span> </div>
<div class="line"><a id="l00495" name="l00495"></a><span class="lineno"> 495</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="l00496" name="l00496"></a><span class="lineno"> 496</span> _kick_guest_irq-&gt;trigger();</div>
<div class="line"><a id="l00497" name="l00497"></a><span class="lineno"> 497</span> </div>
<div class="line"><a id="l00498" name="l00498"></a><span class="lineno"> 498</span> <span class="comment">// Request can be dropped here.</span></div>
<div class="line"><a id="l00499" name="l00499"></a><span class="lineno"> 499</span> }</div>
</div>
<div class="line"><a id="l00500" name="l00500"></a><span class="lineno"> 500</span> </div>
<div class="foldopen" id="foldopen00501" data-start="{" data-end="}">
<div class="line"><a id="l00501" name="l00501"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#afdae77ce3367dbe19f52c1ce8a708a2b"> 501</a></span> <span class="keywordtype">int</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#afdae77ce3367dbe19f52c1ce8a708a2b">reconfig_queue</a>(<span class="keywordtype">unsigned</span> idx)<span class="keyword"> override</span></div>
<div class="line"><a id="l00502" name="l00502"></a><span class="lineno"> 502</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00503" name="l00503"></a><span class="lineno"> 503</span> <span class="keywordflow">if</span> (idx == 0 &amp;&amp; this-&gt;<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Device__t.html#ab906b4cc61026fd815a8056f07bef10e">setup_queue</a>(&amp;_queue, 0, _vq_max))</div>
<div class="line"><a id="l00504" name="l00504"></a><span class="lineno"> 504</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00505" name="l00505"></a><span class="lineno"> 505</span> </div>
<div class="line"><a id="l00506" name="l00506"></a><span class="lineno"> 506</span> <span class="keywordflow">return</span> -<a class="code hl_enumvalue" href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9a54ddbebc30b661c87177b968a77588b8">L4_EINVAL</a>;</div>
<div class="line"><a id="l00507" name="l00507"></a><span class="lineno"> 507</span> }</div>
</div>
<div class="line"><a id="l00508" name="l00508"></a><span class="lineno"> 508</span> </div>
<div class="foldopen" id="foldopen00509" data-start="{" data-end="}">
<div class="line"><a id="l00509" name="l00509"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#abccf7d85ecfd3e21953761bedf52ad79"> 509</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#abccf7d85ecfd3e21953761bedf52ad79">reset</a>()<span class="keyword"> override</span></div>
<div class="line"><a id="l00510" name="l00510"></a><span class="lineno"> 510</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00511" name="l00511"></a><span class="lineno"> 511</span> _queue.disable();</div>
<div class="line"><a id="l00512" name="l00512"></a><span class="lineno"> 512</span> _dev_config.reset_queue(0, _vq_max);</div>
<div class="line"><a id="l00513" name="l00513"></a><span class="lineno"> 513</span> _dev_config.reset_hdr();</div>
<div class="line"><a id="l00514" name="l00514"></a><span class="lineno"> 514</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a9c458714db0fe38c496c97466768db5c">reset_device</a>();</div>
<div class="line"><a id="l00515" name="l00515"></a><span class="lineno"> 515</span> }</div>
</div>
<div class="line"><a id="l00516" name="l00516"></a><span class="lineno"> 516</span> </div>
<div class="line"><a id="l00517" name="l00517"></a><span class="lineno"> 517</span><span class="keyword">protected</span>:</div>
<div class="line"><a id="l00518" name="l00518"></a><span class="lineno"> 518</span> <span class="keywordtype">bool</span> check_for_new_requests()</div>
<div class="line"><a id="l00519" name="l00519"></a><span class="lineno"> 519</span> {</div>
<div class="line"><a id="l00520" name="l00520"></a><span class="lineno"> 520</span> <span class="keywordflow">if</span> (!_queue.<a class="code hl_function" href="classL4virtio_1_1Virtqueue.html#aa242e930433e8705c4ee00afaf58f686">ready</a>() || <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a3e911bba0fa756a1c2eb014dc0bd6b0a">queue_stopped</a>())</div>
<div class="line"><a id="l00521" name="l00521"></a><span class="lineno"> 521</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00522" name="l00522"></a><span class="lineno"> 522</span> </div>
<div class="line"><a id="l00523" name="l00523"></a><span class="lineno"> 523</span> <span class="keywordflow">if</span> (_dev_config.<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Dev__config.html#a96ad6d40f04894e7a0ef8ce33a4f8416">status</a>().<a class="code hl_function" href="structL4virtio_1_1Svr_1_1Dev__status.html#acfbb0f427399dde712ff5bfc894d1144">fail_state</a>())</div>
<div class="line"><a id="l00524" name="l00524"></a><span class="lineno"> 524</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00525" name="l00525"></a><span class="lineno"> 525</span> </div>
<div class="line"><a id="l00526" name="l00526"></a><span class="lineno"> 526</span> <span class="keywordflow">return</span> _queue.<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Virtqueue.html#a17bf1779983cb1471fd3c0ca68641922">desc_avail</a>();</div>
<div class="line"><a id="l00527" name="l00527"></a><span class="lineno"> 527</span> }</div>
<div class="line"><a id="l00528" name="l00528"></a><span class="lineno"> 528</span></div>
<div class="foldopen" id="foldopen00530" data-start="{" data-end="}">
<div class="line"><a id="l00530" name="l00530"></a><span class="lineno"><a class="line" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a42aba4636006c5ba197cd385613ef221"> 530</a></span> cxx::unique_ptr&lt;Request&gt; <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a42aba4636006c5ba197cd385613ef221">get_request</a>()</div>
<div class="line"><a id="l00531" name="l00531"></a><span class="lineno"> 531</span> {</div>
<div class="line"><a id="l00532" name="l00532"></a><span class="lineno"> 532</span> cxx::unique_ptr&lt;Request&gt; req;</div>
<div class="line"><a id="l00533" name="l00533"></a><span class="lineno"> 533</span> </div>
<div class="line"><a id="l00534" name="l00534"></a><span class="lineno"> 534</span> <span class="keywordflow">if</span> (!_queue.ready() || <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a3e911bba0fa756a1c2eb014dc0bd6b0a">queue_stopped</a>())</div>
<div class="line"><a id="l00535" name="l00535"></a><span class="lineno"> 535</span> <span class="keywordflow">return</span> req;</div>
<div class="line"><a id="l00536" name="l00536"></a><span class="lineno"> 536</span> </div>
<div class="line"><a id="l00537" name="l00537"></a><span class="lineno"> 537</span> <span class="keywordflow">if</span> (_dev_config.status().fail_state())</div>
<div class="line"><a id="l00538" name="l00538"></a><span class="lineno"> 538</span> <span class="keywordflow">return</span> req;</div>
<div class="line"><a id="l00539" name="l00539"></a><span class="lineno"> 539</span> </div>
<div class="line"><a id="l00540" name="l00540"></a><span class="lineno"> 540</span> <span class="keyword">auto</span> r = _queue.next_avail();</div>
<div class="line"><a id="l00541" name="l00541"></a><span class="lineno"> 541</span> <span class="keywordflow">if</span> (!r)</div>
<div class="line"><a id="l00542" name="l00542"></a><span class="lineno"> 542</span> <span class="keywordflow">return</span> req;</div>
<div class="line"><a id="l00543" name="l00543"></a><span class="lineno"> 543</span> </div>
<div class="line"><a id="l00544" name="l00544"></a><span class="lineno"> 544</span> <span class="keywordflow">try</span></div>
<div class="line"><a id="l00545" name="l00545"></a><span class="lineno"> 545</span> {</div>
<div class="line"><a id="l00546" name="l00546"></a><span class="lineno"> 546</span> cxx::unique_ptr&lt;Request&gt; cur{</div>
<div class="line"><a id="l00547" name="l00547"></a><span class="lineno"> 547</span> <span class="keyword">new</span> Request(r, &amp;(this-&gt;<a class="code hl_variable" href="classL4virtio_1_1Svr_1_1Device__t.html#a4ff8b5e4425d1b720b9751fbe501f68d">_mem_info</a>), _vq_max, _max_block_size)};</div>
<div class="line"><a id="l00548" name="l00548"></a><span class="lineno"> 548</span> </div>
<div class="line"><a id="l00549" name="l00549"></a><span class="lineno"> 549</span> req = cxx::move(cur);</div>
<div class="line"><a id="l00550" name="l00550"></a><span class="lineno"> 550</span> }</div>
<div class="line"><a id="l00551" name="l00551"></a><span class="lineno"> 551</span> <span class="keywordflow">catch</span> (<a class="code hl_struct" href="structL4virtio_1_1Svr_1_1Bad__descriptor.html">Bad_descriptor</a> <span class="keyword">const</span> &amp;e)</div>
<div class="line"><a id="l00552" name="l00552"></a><span class="lineno"> 552</span> {</div>
<div class="line"><a id="l00553" name="l00553"></a><span class="lineno"> 553</span> this-&gt;<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Device__t.html#a29f780ecb04509d8b72f4a155b073c74">device_error</a>();</div>
<div class="line"><a id="l00554" name="l00554"></a><span class="lineno"> 554</span> <span class="keywordflow">return</span> req;</div>
<div class="line"><a id="l00555" name="l00555"></a><span class="lineno"> 555</span> }</div>
<div class="line"><a id="l00556" name="l00556"></a><span class="lineno"> 556</span> </div>
<div class="line"><a id="l00557" name="l00557"></a><span class="lineno"> 557</span> <span class="keywordflow">return</span> req;</div>
<div class="line"><a id="l00558" name="l00558"></a><span class="lineno"> 558</span> }</div>
</div>
<div class="line"><a id="l00559" name="l00559"></a><span class="lineno"> 559</span> </div>
<div class="line"><a id="l00560" name="l00560"></a><span class="lineno"> 560</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00561" name="l00561"></a><span class="lineno"> 561</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Device__t.html#a8047b37ac63d6b5f84bcb1886a06f1b2">register_single_driver_irq</a>()<span class="keyword"> override</span></div>
<div class="line"><a id="l00562" name="l00562"></a><span class="lineno"> 562</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00563" name="l00563"></a><span class="lineno"> 563</span> _kick_guest_irq = <a class="code hl_typedef" href="namespaceL4Re_1_1Util.html#a0efccd325a19246334922e58dd973914">L4Re::Util::Unique_cap&lt;L4::Irq&gt;</a>(</div>
<div class="line"><a id="l00564" name="l00564"></a><span class="lineno"> 564</span> <a class="code hl_function" href="namespaceL4Re.html#a64b057254a760643ba67a9ed452fede8">L4Re::chkcap</a>(this-&gt;server_iface()-&gt;<span class="keyword">template</span> rcv_cap&lt;L4::Irq&gt;(0)));</div>
<div class="line"><a id="l00565" name="l00565"></a><span class="lineno"> 565</span> </div>
<div class="line"><a id="l00566" name="l00566"></a><span class="lineno"> 566</span> <a class="code hl_function" href="namespaceL4Re.html#a3f17984019f06676a7e3eecb41bbb0bb">L4Re::chksys</a>(this-&gt;server_iface()-&gt;realloc_rcv_cap(0));</div>
<div class="line"><a id="l00567" name="l00567"></a><span class="lineno"> 567</span> }</div>
<div class="line"><a id="l00568" name="l00568"></a><span class="lineno"> 568</span> </div>
<div class="line"><a id="l00569" name="l00569"></a><span class="lineno"> 569</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Device__t.html#a4555e9697f41bc44c313496af829d215">trigger_driver_config_irq</a>()<span class="keyword"> override</span></div>
<div class="line"><a id="l00570" name="l00570"></a><span class="lineno"> 570</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00571" name="l00571"></a><span class="lineno"> 571</span> _dev_config.<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Dev__config.html#a7fb7334fc078f7c26c036ea1f5fbdbf3">add_irq_status</a>(<a class="code hl_enumvalue" href="group__l4virtio__transport.html#ggafc85528edcc3d740233740766f759fdda7e21836e79756a2e357e1cbc2509090d">L4VIRTIO_IRQ_STATUS_CONFIG</a>);</div>
<div class="line"><a id="l00572" name="l00572"></a><span class="lineno"> 572</span> _kick_guest_irq-&gt;trigger();</div>
<div class="line"><a id="l00573" name="l00573"></a><span class="lineno"> 573</span> }</div>
<div class="line"><a id="l00574" name="l00574"></a><span class="lineno"> 574</span> </div>
<div class="line"><a id="l00575" name="l00575"></a><span class="lineno"> 575</span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Device__t.html#afd67e955eac6db54cbe5a479102b1a95">check_queues</a>()<span class="keyword"> override</span></div>
<div class="line"><a id="l00576" name="l00576"></a><span class="lineno"> 576</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00577" name="l00577"></a><span class="lineno"> 577</span> <span class="keywordflow">if</span> (!_queue.<a class="code hl_function" href="classL4virtio_1_1Virtqueue.html#aa242e930433e8705c4ee00afaf58f686">ready</a>())</div>
<div class="line"><a id="l00578" name="l00578"></a><span class="lineno"> 578</span> {</div>
<div class="line"><a id="l00579" name="l00579"></a><span class="lineno"> 579</span> <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#abccf7d85ecfd3e21953761bedf52ad79">reset</a>();</div>
<div class="line"><a id="l00580" name="l00580"></a><span class="lineno"> 580</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00581" name="l00581"></a><span class="lineno"> 581</span> }</div>
<div class="line"><a id="l00582" name="l00582"></a><span class="lineno"> 582</span> </div>
<div class="line"><a id="l00583" name="l00583"></a><span class="lineno"> 583</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00584" name="l00584"></a><span class="lineno"> 584</span> }</div>
<div class="line"><a id="l00585" name="l00585"></a><span class="lineno"> 585</span>};</div>
</div>
<div class="line"><a id="l00586" name="l00586"></a><span class="lineno"> 586</span> </div>
<div class="line"><a id="l00587" name="l00587"></a><span class="lineno"> 587</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Ds_data&gt;</div>
<div class="line"><a id="l00588" name="l00588"></a><span class="lineno"> 588</span><span class="keyword">struct </span>Block_dev</div>
<div class="line"><a id="l00589" name="l00589"></a><span class="lineno"> 589</span>: <a class="code hl_class" href="classL4virtio_1_1Svr_1_1Block__dev__base.html">Block_dev_base</a>&lt;Ds_data&gt;,</div>
<div class="line"><a id="l00590" name="l00590"></a><span class="lineno"> 590</span> L4::Epiface_t&lt;Block_dev&lt;Ds_data&gt;, L4virtio::Device&gt;</div>
<div class="line"><a id="l00591" name="l00591"></a><span class="lineno"> 591</span>{</div>
<div class="line"><a id="l00592" name="l00592"></a><span class="lineno"> 592</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00593" name="l00593"></a><span class="lineno"> 593</span> <span class="keyword">class </span>Irq_object : <span class="keyword">public</span> L4::Irqep_t&lt;Irq_object&gt;</div>
<div class="line"><a id="l00594" name="l00594"></a><span class="lineno"> 594</span> {</div>
<div class="line"><a id="l00595" name="l00595"></a><span class="lineno"> 595</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00596" name="l00596"></a><span class="lineno"> 596</span> Irq_object(Block_dev&lt;Ds_data&gt; *parent) : _parent(parent) {}</div>
<div class="line"><a id="l00597" name="l00597"></a><span class="lineno"> 597</span> </div>
<div class="line"><a id="l00598" name="l00598"></a><span class="lineno"> 598</span> <span class="keywordtype">void</span> handle_irq()</div>
<div class="line"><a id="l00599" name="l00599"></a><span class="lineno"> 599</span> {</div>
<div class="line"><a id="l00600" name="l00600"></a><span class="lineno"> 600</span> _parent-&gt;kick();</div>
<div class="line"><a id="l00601" name="l00601"></a><span class="lineno"> 601</span> }</div>
<div class="line"><a id="l00602" name="l00602"></a><span class="lineno"> 602</span> </div>
<div class="line"><a id="l00603" name="l00603"></a><span class="lineno"> 603</span> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00604" name="l00604"></a><span class="lineno"> 604</span> Block_dev&lt;Ds_data&gt; *_parent;</div>
<div class="line"><a id="l00605" name="l00605"></a><span class="lineno"> 605</span> };</div>
<div class="line"><a id="l00606" name="l00606"></a><span class="lineno"> 606</span> Irq_object _irq_handler;</div>
<div class="line"><a id="l00607" name="l00607"></a><span class="lineno"> 607</span> </div>
<div class="line"><a id="l00608" name="l00608"></a><span class="lineno"> 608</span><span class="keyword">protected</span>:</div>
<div class="line"><a id="l00609" name="l00609"></a><span class="lineno"> 609</span> L4::Epiface *irq_iface()</div>
<div class="line"><a id="l00610" name="l00610"></a><span class="lineno"> 610</span> { <span class="keywordflow">return</span> &amp;_irq_handler; }</div>
<div class="line"><a id="l00611" name="l00611"></a><span class="lineno"> 611</span> </div>
<div class="line"><a id="l00612" name="l00612"></a><span class="lineno"> 612</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00613" name="l00613"></a><span class="lineno"> 613</span> Block_dev(<a class="code hl_typedef" href="group__l4__basic__types.html#gac1d09f3e382e711b776931f10e6e1e5a">l4_uint32_t</a> vendor, <span class="keywordtype">unsigned</span> queue_size, <a class="code hl_typedef" href="group__l4__basic__types.html#gaf3331c485014bd12a9e4f9d27a55e689">l4_uint64_t</a> capacity,</div>
<div class="line"><a id="l00614" name="l00614"></a><span class="lineno"> 614</span> <span class="keywordtype">bool</span> read_only)</div>
<div class="line"><a id="l00615" name="l00615"></a><span class="lineno"> 615</span> : <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a71594b4dbd7adcf9772e48dac00a98c7">Block_dev_base</a>&lt;Ds_data&gt;(vendor, queue_size, capacity, read_only),</div>
<div class="line"><a id="l00616" name="l00616"></a><span class="lineno"> 616</span> _irq_handler(this)</div>
<div class="line"><a id="l00617" name="l00617"></a><span class="lineno"> 617</span> {}</div>
<div class="line"><a id="l00618" name="l00618"></a><span class="lineno"> 618</span></div>
<div class="line"><a id="l00629" name="l00629"></a><span class="lineno"> 629</span> L4::Cap&lt;void&gt; register_obj(L4::Registry_iface *registry,</div>
<div class="line"><a id="l00630" name="l00630"></a><span class="lineno"> 630</span> <span class="keywordtype">char</span> <span class="keyword">const</span> *service = 0)</div>
<div class="line"><a id="l00631" name="l00631"></a><span class="lineno"> 631</span> {</div>
<div class="line"><a id="l00632" name="l00632"></a><span class="lineno"> 632</span> <a class="code hl_function" href="namespaceL4Re.html#a64b057254a760643ba67a9ed452fede8">L4Re::chkcap</a>(registry-&gt;<a class="code hl_function" href="classL4_1_1Registry__iface.html#aa3b5572113c3be5ef9c81503fa3e5798">register_irq_obj</a>(this-&gt;irq_iface()));</div>
<div class="line"><a id="l00633" name="l00633"></a><span class="lineno"> 633</span> L4::Cap&lt;void&gt; ret;</div>
<div class="line"><a id="l00634" name="l00634"></a><span class="lineno"> 634</span> <span class="keywordflow">if</span> (service)</div>
<div class="line"><a id="l00635" name="l00635"></a><span class="lineno"> 635</span> ret = registry-&gt;<a class="code hl_function" href="classL4_1_1Registry__iface.html#aaa2fd93b1f1299c5551e7ab692af0abe">register_obj</a>(<span class="keyword">this</span>, service);</div>
<div class="line"><a id="l00636" name="l00636"></a><span class="lineno"> 636</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00637" name="l00637"></a><span class="lineno"> 637</span> ret = registry-&gt;<a class="code hl_function" href="classL4_1_1Registry__iface.html#aaa2fd93b1f1299c5551e7ab692af0abe">register_obj</a>(<span class="keyword">this</span>);</div>
<div class="line"><a id="l00638" name="l00638"></a><span class="lineno"> 638</span> <a class="code hl_function" href="namespaceL4Re.html#a64b057254a760643ba67a9ed452fede8">L4Re::chkcap</a>(ret);</div>
<div class="line"><a id="l00639" name="l00639"></a><span class="lineno"> 639</span> </div>
<div class="line"><a id="l00640" name="l00640"></a><span class="lineno"> 640</span> <span class="keywordflow">return</span> ret;</div>
<div class="line"><a id="l00641" name="l00641"></a><span class="lineno"> 641</span> }</div>
<div class="line"><a id="l00642" name="l00642"></a><span class="lineno"> 642</span> </div>
<div class="line"><a id="l00643" name="l00643"></a><span class="lineno"> 643</span> L4::Cap&lt;void&gt; register_obj(L4::Registry_iface *registry,</div>
<div class="line"><a id="l00644" name="l00644"></a><span class="lineno"> 644</span> L4::Cap&lt;L4::Rcv_endpoint&gt; ep)</div>
<div class="line"><a id="l00645" name="l00645"></a><span class="lineno"> 645</span> {</div>
<div class="line"><a id="l00646" name="l00646"></a><span class="lineno"> 646</span> <a class="code hl_function" href="namespaceL4Re.html#a64b057254a760643ba67a9ed452fede8">L4Re::chkcap</a>(registry-&gt;<a class="code hl_function" href="classL4_1_1Registry__iface.html#aa3b5572113c3be5ef9c81503fa3e5798">register_irq_obj</a>(this-&gt;irq_iface()));</div>
<div class="line"><a id="l00647" name="l00647"></a><span class="lineno"> 647</span> </div>
<div class="line"><a id="l00648" name="l00648"></a><span class="lineno"> 648</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceL4Re.html#a64b057254a760643ba67a9ed452fede8">L4Re::chkcap</a>(registry-&gt;<a class="code hl_function" href="classL4_1_1Registry__iface.html#aaa2fd93b1f1299c5551e7ab692af0abe">register_obj</a>(<span class="keyword">this</span>, ep));</div>
<div class="line"><a id="l00649" name="l00649"></a><span class="lineno"> 649</span> }</div>
<div class="line"><a id="l00650" name="l00650"></a><span class="lineno"> 650</span> </div>
<div class="line"><a id="l00651" name="l00651"></a><span class="lineno"> 651</span> <span class="keyword">typedef</span> Block_request&lt;Ds_data&gt; Request;</div>
<div class="line"><a id="l00666" name="l00666"></a><span class="lineno"> 666</span> <span class="keyword">virtual</span> <span class="keywordtype">bool</span> process_request(cxx::unique_ptr&lt;Request&gt; &amp;&amp;req) = 0;</div>
<div class="line"><a id="l00667" name="l00667"></a><span class="lineno"> 667</span> </div>
<div class="line"><a id="l00668" name="l00668"></a><span class="lineno"> 668</span><span class="keyword">protected</span>:</div>
<div class="line"><a id="l00669" name="l00669"></a><span class="lineno"> 669</span> L4::Ipc_svr::Server_iface *<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="l00670" name="l00670"></a><span class="lineno"> 670</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00671" name="l00671"></a><span class="lineno"> 671</span> <span class="keywordflow">return</span> this-&gt;<a class="code hl_function" href="structL4_1_1Epiface.html#a9605834c855375364504bd0f7ae78273">L4::Epiface::server_iface</a>();</div>
<div class="line"><a id="l00672" name="l00672"></a><span class="lineno"> 672</span> }</div>
<div class="line"><a id="l00673" name="l00673"></a><span class="lineno"> 673</span> </div>
<div class="line"><a id="l00674" name="l00674"></a><span class="lineno"> 674</span> <span class="keywordtype">void</span> kick()</div>
<div class="line"><a id="l00675" name="l00675"></a><span class="lineno"> 675</span> {</div>
<div class="line"><a id="l00676" name="l00676"></a><span class="lineno"> 676</span> <span class="keywordflow">for</span> (;;)</div>
<div class="line"><a id="l00677" name="l00677"></a><span class="lineno"> 677</span> {</div>
<div class="line"><a id="l00678" name="l00678"></a><span class="lineno"> 678</span> <span class="keyword">auto</span> req = this-&gt;<a class="code hl_function" href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a42aba4636006c5ba197cd385613ef221">get_request</a>();</div>
<div class="line"><a id="l00679" name="l00679"></a><span class="lineno"> 679</span> <span class="keywordflow">if</span> (!req)</div>
<div class="line"><a id="l00680" name="l00680"></a><span class="lineno"> 680</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00681" name="l00681"></a><span class="lineno"> 681</span> <span class="keywordflow">if</span> (!this-&gt;process_request(cxx::move(req)))</div>
<div class="line"><a id="l00682" name="l00682"></a><span class="lineno"> 682</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00683" name="l00683"></a><span class="lineno"> 683</span> }</div>
<div class="line"><a id="l00684" name="l00684"></a><span class="lineno"> 684</span> }</div>
<div class="line"><a id="l00685" name="l00685"></a><span class="lineno"> 685</span> </div>
<div class="line"><a id="l00686" name="l00686"></a><span class="lineno"> 686</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00687" name="l00687"></a><span class="lineno"> 687</span> L4::Cap&lt;L4::Irq&gt; <a class="code hl_function" href="classL4virtio_1_1Svr_1_1Device__t.html#ae96ab79bacd9bb862b0cf2aa4d3d18ac">device_notify_irq</a>()<span class="keyword"> const override</span></div>
<div class="line"><a id="l00688" name="l00688"></a><span class="lineno"> 688</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00689" name="l00689"></a><span class="lineno"> 689</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceL4.html#ac674c8e32808f504f4fa0aa8e5276e84">L4::cap_cast&lt;L4::Irq&gt;</a>(_irq_handler.obj_cap());</div>
<div class="line"><a id="l00690" name="l00690"></a><span class="lineno"> 690</span> }</div>
<div class="line"><a id="l00691" name="l00691"></a><span class="lineno"> 691</span>};</div>
<div class="line"><a id="l00692" name="l00692"></a><span class="lineno"> 692</span> </div>
<div class="line"><a id="l00693" name="l00693"></a><span class="lineno"> 693</span>} }</div>
<div class="ttc" id="aclassL4_1_1Registry__iface_html_aa3b5572113c3be5ef9c81503fa3e5798"><div class="ttname"><a href="classL4_1_1Registry__iface.html#aa3b5572113c3be5ef9c81503fa3e5798">L4::Registry_iface::register_irq_obj</a></div><div class="ttdeci">virtual L4::Cap&lt; L4::Irq &gt; register_irq_obj(L4::Epiface *o)=0</div><div class="ttdoc">Register o as server-side object for asynchronous IRQs.</div></div>
<div class="ttc" id="aclassL4_1_1Registry__iface_html_aaa2fd93b1f1299c5551e7ab692af0abe"><div class="ttname"><a href="classL4_1_1Registry__iface.html#aaa2fd93b1f1299c5551e7ab692af0abe">L4::Registry_iface::register_obj</a></div><div class="ttdeci">virtual L4::Cap&lt; void &gt; register_obj(L4::Epiface *o, char const *service)=0</div><div class="ttdoc">Register an L4::Epiface for an IPC gate available in the applications environment under the name serv...</div></div>
<div class="ttc" id="aclassL4_1_1Runtime__error_html"><div class="ttname"><a href="classL4_1_1Runtime__error.html">L4::Runtime_error</a></div><div class="ttdoc">Exception for an abstract runtime error.</div><div class="ttdef"><b>Definition</b> <a href="exceptions_source.html#l00128">exceptions:129</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html">L4virtio::Svr::Block_dev_base</a></div><div class="ttdoc">Base class for virtio block devices.</div><div class="ttdef"><b>Definition</b> <a href="#l00259">virtio-block:260</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_a29efdfb37c14cba25ea4f1c71cfe0cf1"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a29efdfb37c14cba25ea4f1c71cfe0cf1">L4virtio::Svr::Block_dev_base::set_write_zeroes</a></div><div class="ttdeci">void set_write_zeroes(l4_uint32_t max_write_zeroes_sectors, l4_uint32_t max_write_zeroes_seg, l4_uint8_t write_zeroes_may_unmap)</div><div class="ttdoc">Sets constraints for and enables the write zeroes command.</div><div class="ttdef"><b>Definition</b> <a href="#l00422">virtio-block:422</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_a3e911bba0fa756a1c2eb014dc0bd6b0a"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a3e911bba0fa756a1c2eb014dc0bd6b0a">L4virtio::Svr::Block_dev_base::queue_stopped</a></div><div class="ttdeci">virtual bool queue_stopped()=0</div><div class="ttdoc">Return true, if the queues should not be processed further.</div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_a41ce247545113631dc5a3bcac7a70abc"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a41ce247545113631dc5a3bcac7a70abc">L4virtio::Svr::Block_dev_base::get_writeback</a></div><div class="ttdeci">l4_uint8_t get_writeback()</div><div class="ttdoc">Get the writeback field from the configuration space.</div><div class="ttdef"><b>Definition</b> <a href="#l00388">virtio-block:388</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_a42aba4636006c5ba197cd385613ef221"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a42aba4636006c5ba197cd385613ef221">L4virtio::Svr::Block_dev_base::get_request</a></div><div class="ttdeci">cxx::unique_ptr&lt; Request &gt; get_request()</div><div class="ttdoc">Return one request if available.</div><div class="ttdef"><b>Definition</b> <a href="#l00530">virtio-block:530</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_a4836579882ae39b26ebcb72204ca5a01"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a4836579882ae39b26ebcb72204ca5a01">L4virtio::Svr::Block_dev_base::set_blk_size</a></div><div class="ttdeci">void set_blk_size(l4_uint32_t sz)</div><div class="ttdoc">Sets block disk size to be reported to the client.</div><div class="ttdef"><b>Definition</b> <a href="#l00332">virtio-block:332</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_a523507cc71de8b4f7b549424e0e200fe"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a523507cc71de8b4f7b549424e0e200fe">L4virtio::Svr::Block_dev_base::set_config_wce</a></div><div class="ttdeci">void set_config_wce(l4_uint8_t writeback)</div><div class="ttdoc">Sets cache mode and enables the writeback toggle.</div><div class="ttdef"><b>Definition</b> <a href="#l00375">virtio-block:375</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_a71594b4dbd7adcf9772e48dac00a98c7"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a71594b4dbd7adcf9772e48dac00a98c7">L4virtio::Svr::Block_dev_base::Block_dev_base</a></div><div class="ttdeci">Block_dev_base(l4_uint32_t vendor, unsigned queue_size, l4_uint64_t capacity, bool read_only)</div><div class="ttdoc">Create a new virtio block device.</div><div class="ttdef"><b>Definition</b> <a href="#l00444">virtio-block:444</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_a73469de4686eb71455b5edb3baf88622"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a73469de4686eb71455b5edb3baf88622">L4virtio::Svr::Block_dev_base::set_flush</a></div><div class="ttdeci">void set_flush()</div><div class="ttdoc">Enables the flush command.</div><div class="ttdef"><b>Definition</b> <a href="#l00364">virtio-block:364</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_a8595fd3bf302a2f187ff512b50512f8d"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a8595fd3bf302a2f187ff512b50512f8d">L4virtio::Svr::Block_dev_base::set_size_max</a></div><div class="ttdeci">void set_size_max(l4_uint32_t sz)</div><div class="ttdoc">Sets the maximum size of any single segment reported to client.</div><div class="ttdef"><b>Definition</b> <a href="#l00290">virtio-block:290</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_a9c458714db0fe38c496c97466768db5c"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#a9c458714db0fe38c496c97466768db5c">L4virtio::Svr::Block_dev_base::reset_device</a></div><div class="ttdeci">virtual void reset_device()=0</div><div class="ttdoc">Reset the actual hardware device.</div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_ab1fd85e2fb0cc819c5739ecc1911882a"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#ab1fd85e2fb0cc819c5739ecc1911882a">L4virtio::Svr::Block_dev_base::set_discard</a></div><div class="ttdeci">void set_discard(l4_uint32_t max_discard_sectors, l4_uint32_t max_discard_seg, l4_uint32_t discard_sector_alignment)</div><div class="ttdoc">Sets constraints for and enables the discard command.</div><div class="ttdef"><b>Definition</b> <a href="#l00402">virtio-block:402</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_abccf7d85ecfd3e21953761bedf52ad79"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#abccf7d85ecfd3e21953761bedf52ad79">L4virtio::Svr::Block_dev_base::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="#l00509">virtio-block:509</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_abfc73067f1ba512e3d60b3fe0f047e38"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#abfc73067f1ba512e3d60b3fe0f047e38">L4virtio::Svr::Block_dev_base::set_geometry</a></div><div class="ttdeci">void set_geometry(l4_uint16_t cylinders, l4_uint8_t heads, l4_uint8_t sectors)</div><div class="ttdoc">Set disk geometry that is reported to the client.</div><div class="ttdef"><b>Definition</b> <a href="#l00315">virtio-block:315</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_ac54727ca73bfb46a2d22be44987c9cfc"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#ac54727ca73bfb46a2d22be44987c9cfc">L4virtio::Svr::Block_dev_base::set_seg_max</a></div><div class="ttdeci">void set_seg_max(l4_uint32_t sz)</div><div class="ttdoc">Sets the maximum number of segments in a request that is reported to client.</div><div class="ttdef"><b>Definition</b> <a href="#l00304">virtio-block:304</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_ad4e9c13e6c652cc6fe55b648a9881abc"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#ad4e9c13e6c652cc6fe55b648a9881abc">L4virtio::Svr::Block_dev_base::set_topology</a></div><div class="ttdeci">void set_topology(l4_uint8_t physical_block_exp, l4_uint8_t alignment_offset, l4_uint32_t min_io_size, l4_uint32_t opt_io_size)</div><div class="ttdoc">Sets the I/O alignment information reported back to the client.</div><div class="ttdef"><b>Definition</b> <a href="#l00348">virtio-block:348</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_afd81130f9e38af771d43aabafa05e043"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#afd81130f9e38af771d43aabafa05e043">L4virtio::Svr::Block_dev_base::finalize_request</a></div><div class="ttdeci">void finalize_request(cxx::unique_ptr&lt; Request &gt; req, unsigned sz, l4_uint8_t status=L4VIRTIO_BLOCK_S_OK)</div><div class="ttdoc">Releases resources related to a request and notifies the client.</div><div class="ttdef"><b>Definition</b> <a href="#l00483">virtio-block:483</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__dev__base_html_afdae77ce3367dbe19f52c1ce8a708a2b"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__dev__base.html#afdae77ce3367dbe19f52c1ce8a708a2b">L4virtio::Svr::Block_dev_base::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="#l00501">virtio-block:501</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__request_html"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__request.html">L4virtio::Svr::Block_request</a></div><div class="ttdoc">A request to read or write data.</div><div class="ttdef"><b>Definition</b> <a href="#l00028">virtio-block:29</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__request_html_a5f6bf664cda7dfe4f82d8726f6c33099"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__request.html#a5f6bf664cda7dfe4f82d8726f6c33099">L4virtio::Svr::Block_request::data_size</a></div><div class="ttdeci">unsigned data_size() const</div><div class="ttdoc">Compute the total size of the data in the request.</div><div class="ttdef"><b>Definition</b> <a href="#l00063">virtio-block:63</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__request_html_a7590a5c56b88fdcb63560fb642668fa4"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__request.html#a7590a5c56b88fdcb63560fb642668fa4">L4virtio::Svr::Block_request::header</a></div><div class="ttdeci">l4virtio_block_header_t const &amp; header() const</div><div class="ttdoc">Return the block request header.</div><div class="ttdef"><b>Definition</b> <a href="#l00148">virtio-block:148</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__request_html_a7b714611659c91ffd67e9d8c20102ab6"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__request.html#a7b714611659c91ffd67e9d8c20102ab6">L4virtio::Svr::Block_request::has_more</a></div><div class="ttdeci">bool has_more()</div><div class="ttdoc">Check if the request contains more data blocks.</div><div class="ttdef"><b>Definition</b> <a href="#l00095">virtio-block:95</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Block__request_html_aa2cb429f504f6568d6e25c13936d5be7"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Block__request.html#aa2cb429f504f6568d6e25c13936d5be7">L4virtio::Svr::Block_request::next_block</a></div><div class="ttdeci">Data_block next_block()</div><div class="ttdoc">Return next block in scatter-gather list.</div><div class="ttdef"><b>Definition</b> <a href="#l00113">virtio-block:113</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Dev__config_html_a7fb7334fc078f7c26c036ea1f5fbdbf3"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Dev__config.html#a7fb7334fc078f7c26c036ea1f5fbdbf3">L4virtio::Svr::Dev_config::add_irq_status</a></div><div class="ttdeci">void add_irq_status(l4_uint32_t status)</div><div class="ttdoc">Adds irq status bit.</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l00265">l4virtio:265</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Dev__config_html_a96ad6d40f04894e7a0ef8ce33a4f8416"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Dev__config.html#a96ad6d40f04894e7a0ef8ce33a4f8416">L4virtio::Svr::Dev_config::status</a></div><div class="ttdeci">Status status() const</div><div class="ttdoc">Get current device status (trusted).</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l00222">l4virtio:222</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Device__t_html"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Device__t.html">L4virtio::Svr::Device_t</a></div><div class="ttdoc">Server-side L4-VIRTIO device stub.</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l00801">l4virtio:802</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Device__t_html_a29f780ecb04509d8b72f4a155b073c74"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Device__t.html#a29f780ecb04509d8b72f4a155b073c74">L4virtio::Svr::Device_t&lt; Ds_data &gt;::device_error</a></div><div class="ttdeci">void device_error()</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l01024">l4virtio:1024</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Device__t_html_a4555e9697f41bc44c313496af829d215"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Device__t.html#a4555e9697f41bc44c313496af829d215">L4virtio::Svr::Device_t&lt; Ds_data &gt;::trigger_driver_config_irq</a></div><div class="ttdeci">virtual void trigger_driver_config_irq()=0</div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Device__t_html_a4ff8b5e4425d1b720b9751fbe501f68d"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Device__t.html#a4ff8b5e4425d1b720b9751fbe501f68d">L4virtio::Svr::Device_t&lt; Ds_data &gt;::_mem_info</a></div><div class="ttdeci">Mem_list _mem_info</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l00807">l4virtio:807</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Device__t_html_a7ce755ee0579fb70926d762ba67bb66f"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Device__t.html#a7ce755ee0579fb70926d762ba67bb66f">L4virtio::Svr::Device_t&lt; Ds_data &gt;::Device_t</a></div><div class="ttdeci">Device_t(Dev_config *dev_config)</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l00891">l4virtio:891</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Device__t_html_a8047b37ac63d6b5f84bcb1886a06f1b2"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Device__t.html#a8047b37ac63d6b5f84bcb1886a06f1b2">L4virtio::Svr::Device_t&lt; Ds_data &gt;::register_single_driver_irq</a></div><div class="ttdeci">virtual void register_single_driver_irq()</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l00841">l4virtio:841</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; Ds_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_ae96ab79bacd9bb862b0cf2aa4d3d18ac"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Device__t.html#ae96ab79bacd9bb862b0cf2aa4d3d18ac">L4virtio::Svr::Device_t&lt; Ds_data &gt;::device_notify_irq</a></div><div class="ttdeci">virtual L4::Cap&lt; L4::Irq &gt; device_notify_irq() const</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l00848">l4virtio:848</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; Ds_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_1Device__t_html_afd67e955eac6db54cbe5a479102b1a95"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Device__t.html#afd67e955eac6db54cbe5a479102b1a95">L4virtio::Svr::Device_t&lt; Ds_data &gt;::check_queues</a></div><div class="ttdeci">virtual bool check_queues()=0</div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Driver__mem__list__t_html"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Driver__mem__list__t.html">L4virtio::Svr::Driver_mem_list_t</a></div><div class="ttdoc">List of driver memory regions assigned to a single L4-VIRTIO transport instance.</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l00629">l4virtio:630</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Svr_1_1Driver__mem__region__t_html"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Driver__mem__region__t.html">L4virtio::Svr::Driver_mem_region_t</a></div><div class="ttdoc">Region of driver memory, that shall be managed locally.</div><div class="ttdef"><b>Definition</b> <a href="server_2l4virtio_source.html#l00450">l4virtio:451</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_a9038c26764d07c867d6e70cd6e04157d"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Request__processor.html#a9038c26764d07c867d6e70cd6e04157d">L4virtio::Svr::Request_processor::has_more</a></div><div class="ttdeci">bool has_more() const</div><div class="ttdoc">Are there more chained descriptors?</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00553">virtio:553</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_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_1Svr_1_1Virtqueue_html_a17bf1779983cb1471fd3c0ca68641922"><div class="ttname"><a href="classL4virtio_1_1Svr_1_1Virtqueue.html#a17bf1779983cb1471fd3c0ca68641922">L4virtio::Svr::Virtqueue::desc_avail</a></div><div class="ttdeci">bool desc_avail() const</div><div class="ttdoc">Test for available descriptors.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00175">virtio:175</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="aclassL4virtio_1_1Virtqueue_html"><div class="ttname"><a href="classL4virtio_1_1Virtqueue.html">L4virtio::Virtqueue</a></div><div class="ttdoc">Low-level Virtqueue.</div><div class="ttdef"><b>Definition</b> <a href="virtqueue_source.html#l00080">virtqueue:81</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Virtqueue_html_a2aa2efa2e5f6ee73423ec9beab40232a"><div class="ttname"><a href="classL4virtio_1_1Virtqueue.html#a2aa2efa2e5f6ee73423ec9beab40232a">L4virtio::Virtqueue::no_notify_guest</a></div><div class="ttdeci">bool no_notify_guest() const</div><div class="ttdoc">Get the no IRQ flag of this queue.</div><div class="ttdef"><b>Definition</b> <a href="virtqueue_source.html#l00414">virtqueue:414</a></div></div>
<div class="ttc" id="aclassL4virtio_1_1Virtqueue_html_aa242e930433e8705c4ee00afaf58f686"><div class="ttname"><a href="classL4virtio_1_1Virtqueue.html#aa242e930433e8705c4ee00afaf58f686">L4virtio::Virtqueue::ready</a></div><div class="ttdeci">bool ready() const</div><div class="ttdoc">Test if this queue is in working state.</div><div class="ttdef"><b>Definition</b> <a href="virtqueue_source.html#l00400">virtqueue:400</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__basic__types_html_gaf3331c485014bd12a9e4f9d27a55e689"><div class="ttname"><a href="group__l4__basic__types.html#gaf3331c485014bd12a9e4f9d27a55e689">l4_uint64_t</a></div><div class="ttdeci">unsigned long long l4_uint64_t</div><div class="ttdoc">Unsigned 64bit value.</div><div class="ttdef"><b>Definition</b> <a href="l4_2sys_2l4int_8h_source.html#l00031">l4int.h:31</a></div></div>
<div class="ttc" id="agroup__l4__error__api_html_ggab4c8abc71ffa221a25c1ca5840a354f9a0230b4251e0ab6c7bf80054fb55465bb"><div class="ttname"><a href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9a0230b4251e0ab6c7bf80054fb55465bb">L4_EEXIST</a></div><div class="ttdeci">@ L4_EEXIST</div><div class="ttdoc">Already exists.</div><div class="ttdef"><b>Definition</b> <a href="err_8h_source.html#l00043">err.h:43</a></div></div>
<div class="ttc" id="agroup__l4__error__api_html_ggab4c8abc71ffa221a25c1ca5840a354f9a54ddbebc30b661c87177b968a77588b8"><div class="ttname"><a href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9a54ddbebc30b661c87177b968a77588b8">L4_EINVAL</a></div><div class="ttdeci">@ L4_EINVAL</div><div class="ttdoc">Invalid argument.</div><div class="ttdef"><b>Definition</b> <a href="err_8h_source.html#l00046">err.h:46</a></div></div>
<div class="ttc" id="agroup__l4__error__api_html_ggab4c8abc71ffa221a25c1ca5840a354f9abf18baaba897b65a370e903268cbac91"><div class="ttname"><a href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9abf18baaba897b65a370e903268cbac91">L4_EIO</a></div><div class="ttdeci">@ L4_EIO</div><div class="ttdoc">I/O error.</div><div class="ttdef"><b>Definition</b> <a href="err_8h_source.html#l00035">err.h:35</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__l4virtio__block_html_gaff308435ef6047fb0934285b223be657"><div class="ttname"><a href="group__l4virtio__block.html#gaff308435ef6047fb0934285b223be657">l4virtio_block_header_t</a></div><div class="ttdeci">struct l4virtio_block_header_t l4virtio_block_header_t</div><div class="ttdoc">Header structure of a request for a block device.</div></div>
<div class="ttc" id="agroup__l4virtio__block_html_ggafefb8205febb8b89e612e86f0c89eaa9a52c6169e59039d478b7f4a9faec15f33"><div class="ttname"><a href="group__l4virtio__block.html#ggafefb8205febb8b89e612e86f0c89eaa9a52c6169e59039d478b7f4a9faec15f33">L4VIRTIO_BLOCK_S_OK</a></div><div class="ttdeci">@ L4VIRTIO_BLOCK_S_OK</div><div class="ttdoc">Request finished successfully.</div><div class="ttdef"><b>Definition</b> <a href="virtio__block_8h_source.html#l00034">virtio_block.h:34</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_ggaa3812d621d81dd6a7101d739153b6c3ba10cc3c1991081bd51ac54a45f0d407c8"><div class="ttname"><a href="group__l4virtio__transport.html#ggaa3812d621d81dd6a7101d739153b6c3ba10cc3c1991081bd51ac54a45f0d407c8">L4VIRTIO_ID_BLOCK</a></div><div class="ttdeci">@ L4VIRTIO_ID_BLOCK</div><div class="ttdoc">General block device.</div><div class="ttdef"><b>Definition</b> <a href="virtio_8h_source.html#l00065">virtio.h:65</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_1_1Util_html_a0efccd325a19246334922e58dd973914"><div class="ttname"><a href="namespaceL4Re_1_1Util.html#a0efccd325a19246334922e58dd973914">L4Re::Util::Unique_cap</a></div><div class="ttdeci">L4::Detail::Unique_cap_impl&lt; T, Smart_cap_auto&lt; L4_FP_ALL_SPACES &gt; &gt; Unique_cap</div><div class="ttdoc">Unique capability that implements automatic free and unmap of the capability selector.</div><div class="ttdef"><b>Definition</b> <a href="util_2unique__cap_source.html#l00043">unique_cap:43</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="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="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="astructL4virtio_1_1Svr_1_1Bad__descriptor_html"><div class="ttname"><a href="structL4virtio_1_1Svr_1_1Bad__descriptor.html">L4virtio::Svr::Bad_descriptor</a></div><div class="ttdoc">Exception used by Queue to indicate descriptor errors.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00397">virtio:398</a></div></div>
<div class="ttc" id="astructL4virtio_1_1Svr_1_1Bad__descriptor_html_a6d0361d240b52210a4a6bcb5570a6a25ad151656f5a2cc0c2ec14792310244f5b"><div class="ttname"><a href="structL4virtio_1_1Svr_1_1Bad__descriptor.html#a6d0361d240b52210a4a6bcb5570a6a25ad151656f5a2cc0c2ec14792310244f5b">L4virtio::Svr::Bad_descriptor::Bad_size</a></div><div class="ttdeci">@ Bad_size</div><div class="ttdoc">Invalid size of memory block.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00406">virtio:406</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="astructL4virtio_1_1Svr_1_1Dev__status_html_acfbb0f427399dde712ff5bfc894d1144"><div class="ttname"><a href="structL4virtio_1_1Svr_1_1Dev__status.html#acfbb0f427399dde712ff5bfc894d1144">L4virtio::Svr::Dev_status::fail_state</a></div><div class="ttdeci">constexpr fail_state_bfm_t::Val fail_state() const</div><div class="ttdoc">Get the fail_state bits (6 to 7) of raw.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00044">virtio:44</a></div></div>
<div class="ttc" id="astructl4virtio__block__config__t_html"><div class="ttname"><a href="structl4virtio__block__config__t.html">l4virtio_block_config_t</a></div><div class="ttdoc">Device configuration for block devices.</div><div class="ttdef"><b>Definition</b> <a href="virtio__block_8h_source.html#l00068">virtio_block.h:69</a></div></div>
<div class="ttc" id="astructl4virtio__block__header__t_html"><div class="ttname"><a href="structl4virtio__block__header__t.html">l4virtio_block_header_t</a></div><div class="ttdoc">Header structure of a request for a block device.</div><div class="ttdef"><b>Definition</b> <a href="virtio__block_8h_source.html#l00042">virtio_block.h:43</a></div></div>
<div class="ttc" id="autil_2unique__cap_html"><div class="ttname"><a href="util_2unique__cap.html">unique_cap</a></div><div class="ttdoc">Unique_cap / Unique_del_cap.</div></div>
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