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<div class="title">io.c</div> </div>
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<a href="io_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*-</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2002-2018 The UbixOS Project.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * This was developed by Christopher W. Olsen for the UbixOS Project.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without modification, are permitted</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * provided that the following conditions are met:</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * 1) Redistributions of source code must retain the above copyright notice, this list of</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * conditions, the following disclaimer and the list of authors.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * 2) Redistributions in binary form must reproduce the above copyright notice, this list of</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * conditions, the following disclaimer and the list of authors in the documentation and/or</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * other materials provided with the distribution.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * 3) Neither the name of the UbixOS Project nor the names of its contributors may be used to</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * endorse or promote products derived from this software without specific prior written</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * permission.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <<a class="code" href="io_8h.html">sys/io.h</a>></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="io_8c.html#aaf23f1fbc404bc35bda28093de44de3c"> 38</a></span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="io_8c.html#aaf23f1fbc404bc35bda28093de44de3c">inportByte</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> port) {</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> retVal;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="stringliteral">"inb %%dx,%%al"</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  : <span class="stringliteral">"=a"</span> (retVal)</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  : <span class="stringliteral">"d"</span> (port)</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  );</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">return</span> (retVal);</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> }</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  </div>
<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="io_8c.html#ae3d5e82956e7a9c2ca5e812f532f6074"> 55</a></span> <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> <a class="code" href="io_8c.html#ae3d5e82956e7a9c2ca5e812f532f6074">inportWord</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> port) {</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> retVal;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="stringliteral">"inw %%dx,%%ax"</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  : <span class="stringliteral">"=a"</span> (retVal)</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  : <span class="stringliteral">"d"</span> (port)</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  );</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">return</span> (retVal);</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> }</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div>
<div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="io_8c.html#af28ebc45a7edfcfa426f4161983f857d"> 72</a></span> <span class="keywordtype">void</span> <a class="code" href="io_8c.html#af28ebc45a7edfcfa426f4161983f857d">outportByte</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> port, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> value) {</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="stringliteral">"outb %%al,%%dx"</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  :</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  : <span class="stringliteral">"d"</span> (port), <span class="stringliteral">"a"</span> (value)</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  );</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> }</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  </div>
<div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="io_8c.html#af0c1dd5717007bf73b6c5119dfe7eaf2"> 87</a></span> <span class="keywordtype">void</span> <a class="code" href="io_8c.html#af0c1dd5717007bf73b6c5119dfe7eaf2">outportByteP</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> port, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> value) {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="stringliteral">"outb %%al,%%dx\n"</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="stringliteral">"outb %%al,$0x80\n"</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  :</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  : <span class="stringliteral">"d"</span> (port), <span class="stringliteral">"a"</span> (value)</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  );</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> }</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  </div>
<div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="io_8c.html#a83686182f83df195d065a6a45232e644"> 103</a></span> <span class="keywordtype">void</span> <a class="code" href="io_8c.html#a83686182f83df195d065a6a45232e644">outportWord</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> port, <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> value) {</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="stringliteral">"outw %%ax,%%dx"</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  :</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  : <span class="stringliteral">"d"</span> (port), <span class="stringliteral">"a"</span> (value)</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  );</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> }</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  </div>
<div class="line"><a name="l00118"></a><span class="lineno"><a class="line" href="io_8c.html#a2e2ad8d744ae4b35ea37d39dcfea1296"> 118</a></span> <span class="keywordtype">void</span> <a class="code" href="io_8c.html#a2e2ad8d744ae4b35ea37d39dcfea1296">outportDWord</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> port, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> value) {</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="stringliteral">"outl %%eax,%%dx"</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  :</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  : <span class="stringliteral">"d"</span> (port), <span class="stringliteral">"a"</span> (value)</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  );</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> }</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  </div>
<div class="line"><a name="l00133"></a><span class="lineno"><a class="line" href="io_8c.html#a99e868cf7689cdc2fe248505f2c5cb16"> 133</a></span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <a class="code" href="io_8c.html#a99e868cf7689cdc2fe248505f2c5cb16">inportDWord</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> port) {</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> retVal;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="stringliteral">"inl %%dx,%%eax"</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  : <span class="stringliteral">"=a"</span> (retVal)</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  : <span class="stringliteral">"d"</span> (port)</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  );</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">return</span> (retVal);</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> }</div>
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<div class="ttc" id="aio_8c_html_aaf23f1fbc404bc35bda28093de44de3c"><div class="ttname"><a href="io_8c.html#aaf23f1fbc404bc35bda28093de44de3c">inportByte</a></div><div class="ttdeci">unsigned char inportByte(unsigned int port)</div><div class="ttdoc">input one byte from specified port</div><div class="ttdef"><b>Definition:</b> <a href="io_8c_source.html#l00038">io.c:38</a></div></div>
<div class="ttc" id="aio_8c_html_ae3d5e82956e7a9c2ca5e812f532f6074"><div class="ttname"><a href="io_8c.html#ae3d5e82956e7a9c2ca5e812f532f6074">inportWord</a></div><div class="ttdeci">unsigned short inportWord(unsigned int port)</div><div class="ttdoc">input one word from specified port</div><div class="ttdef"><b>Definition:</b> <a href="io_8c_source.html#l00055">io.c:55</a></div></div>
<div class="ttc" id="aio_8c_html_a83686182f83df195d065a6a45232e644"><div class="ttname"><a href="io_8c.html#a83686182f83df195d065a6a45232e644">outportWord</a></div><div class="ttdeci">void outportWord(unsigned int port, unsigned short value)</div><div class="ttdoc">outputut one word to specified port</div><div class="ttdef"><b>Definition:</b> <a href="io_8c_source.html#l00103">io.c:103</a></div></div>
<div class="ttc" id="aio_8c_html_a2e2ad8d744ae4b35ea37d39dcfea1296"><div class="ttname"><a href="io_8c.html#a2e2ad8d744ae4b35ea37d39dcfea1296">outportDWord</a></div><div class="ttdeci">void outportDWord(unsigned int port, unsigned long value)</div><div class="ttdoc">outputut one double word to specified port</div><div class="ttdef"><b>Definition:</b> <a href="io_8c_source.html#l00118">io.c:118</a></div></div>
<div class="ttc" id="aio_8c_html_a99e868cf7689cdc2fe248505f2c5cb16"><div class="ttname"><a href="io_8c.html#a99e868cf7689cdc2fe248505f2c5cb16">inportDWord</a></div><div class="ttdeci">unsigned long inportDWord(unsigned int port)</div><div class="ttdoc">input one double word from specified port</div><div class="ttdef"><b>Definition:</b> <a href="io_8c_source.html#l00133">io.c:133</a></div></div>
<div class="ttc" id="aio_8c_html_af0c1dd5717007bf73b6c5119dfe7eaf2"><div class="ttname"><a href="io_8c.html#af0c1dd5717007bf73b6c5119dfe7eaf2">outportByteP</a></div><div class="ttdeci">void outportByteP(unsigned int port, unsigned char value)</div><div class="ttdoc">outputut one byte to specified port with a delay</div><div class="ttdef"><b>Definition:</b> <a href="io_8c_source.html#l00087">io.c:87</a></div></div>
<div class="ttc" id="aio_8h_html"><div class="ttname"><a href="io_8h.html">io.h</a></div></div>
<div class="ttc" id="aio_8c_html_af28ebc45a7edfcfa426f4161983f857d"><div class="ttname"><a href="io_8c.html#af28ebc45a7edfcfa426f4161983f857d">outportByte</a></div><div class="ttdeci">void outportByte(unsigned int port, unsigned char value)</div><div class="ttdoc">outputut one byte to specified port</div><div class="ttdef"><b>Definition:</b> <a href="io_8c_source.html#l00072">io.c:72</a></div></div>
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