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<title>LCOV - skiboot.info - include/timebase.h</title>
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<td width="10%" class="headerItem">Current view:</td>
<td width="35%" class="headerValue"><a href="../index.html">top level</a> - <a href="index.html">include</a> - timebase.h<span style="font-size: 80%;"> (source / <a href="timebase.h.func-sort-c.html">functions</a>)</span></td>
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<td width="10%" class="headerCovTableHead">Hit</td>
<td width="10%" class="headerCovTableHead">Total</td>
<td width="15%" class="headerCovTableHead">Coverage</td>
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<td class="headerItem">Test:</td>
<td class="headerValue">skiboot.info</td>
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<td class="headerItem">Lines:</td>
<td class="headerCovTableEntry">18</td>
<td class="headerCovTableEntry">18</td>
<td class="headerCovTableEntryHi">100.0 %</td>
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<td class="headerItem">Date:</td>
<td class="headerValue">2022-06-13 14:57:12</td>
<td></td>
<td class="headerItem">Functions:</td>
<td class="headerCovTableEntry">8</td>
<td class="headerCovTableEntry">8</td>
<td class="headerCovTableEntryHi">100.0 %</td>
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<td class="headerCovTableEntry">0</td>
<td class="headerCovTableEntry">0</td>
<td class="headerCovTableEntryHi">-</td>
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<pre class="sourceHeading"> Branch data Line data Source code</pre>
<pre class="source">
<a name="1"><span class="lineNum"> 1 </span> : : // SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later</a>
<a name="2"><span class="lineNum"> 2 </span> : : /*</a>
<a name="3"><span class="lineNum"> 3 </span> : : * Timebase helpers.</a>
<a name="4"><span class="lineNum"> 4 </span> : : *</a>
<a name="5"><span class="lineNum"> 5 </span> : : * Note: Only use after the TODs are in sync !</a>
<a name="6"><span class="lineNum"> 6 </span> : : *</a>
<a name="7"><span class="lineNum"> 7 </span> : : * Copyright 2013-2016 IBM Corp.</a>
<a name="8"><span class="lineNum"> 8 </span> : : */</a>
<a name="9"><span class="lineNum"> 9 </span> : : </a>
<a name="10"><span class="lineNum"> 10 </span> : : #ifndef __TIME_H</a>
<a name="11"><span class="lineNum"> 11 </span> : : #define __TIME_H</a>
<a name="12"><span class="lineNum"> 12 </span> : : </a>
<a name="13"><span class="lineNum"> 13 </span> : : #include <time.h></a>
<a name="14"><span class="lineNum"> 14 </span> : : </a>
<a name="15"><span class="lineNum"> 15 </span> : : #ifndef __TEST__</a>
<a name="16"><span class="lineNum"> 16 </span> : : static inline unsigned long mftb(void)</a>
<a name="17"><span class="lineNum"> 17 </span> : : {</a>
<a name="18"><span class="lineNum"> 18 </span> : : unsigned long tb;</a>
<a name="19"><span class="lineNum"> 19 </span> : : </a>
<a name="20"><span class="lineNum"> 20 </span> : : /* We use a memory clobber to avoid this being</a>
<a name="21"><span class="lineNum"> 21 </span> : : * moved in the instruction stream</a>
<a name="22"><span class="lineNum"> 22 </span> : : */</a>
<a name="23"><span class="lineNum"> 23 </span> : : asm volatile("mftb %0" : "=r"(tb) : : "memory");</a>
<a name="24"><span class="lineNum"> 24 </span> : : return tb;</a>
<a name="25"><span class="lineNum"> 25 </span> : : }</a>
<a name="26"><span class="lineNum"> 26 </span> : : #endif</a>
<a name="27"><span class="lineNum"> 27 </span> : : </a>
<a name="28"><span class="lineNum"> 28 </span> : : enum tb_cmpval {</a>
<a name="29"><span class="lineNum"> 29 </span> : : TB_ABEFOREB = -1,</a>
<a name="30"><span class="lineNum"> 30 </span> : : TB_AEQUALB = 0,</a>
<a name="31"><span class="lineNum"> 31 </span> : : TB_AAFTERB = 1</a>
<a name="32"><span class="lineNum"> 32 </span> : : };</a>
<a name="33"><span class="lineNum"> 33 </span> : : </a>
<a name="34"><span class="lineNum"> 34 </span> :<span class="lineCov"> 3 : static inline enum tb_cmpval tb_compare(unsigned long a,</span></a>
<a name="35"><span class="lineNum"> 35 </span> : : unsigned long b)</a>
<a name="36"><span class="lineNum"> 36 </span> : : {</a>
<a name="37"><span class="lineNum"> 37 </span> :<span class="lineCov"> 3 : if (a == b)</span></a>
<a name="38"><span class="lineNum"> 38 </span> :<span class="lineCov"> 1 : return TB_AEQUALB;</span></a>
<a name="39"><span class="lineNum"> 39 </span> :<span class="lineCov"> 2 : return ((long)(b - a)) > 0 ? TB_ABEFOREB : TB_AAFTERB;</span></a>
<a name="40"><span class="lineNum"> 40 </span> : : }</a>
<a name="41"><span class="lineNum"> 41 </span> : : </a>
<a name="42"><span class="lineNum"> 42 </span> : : /* Architected timebase */</a>
<a name="43"><span class="lineNum"> 43 </span> : : extern unsigned long tb_hz;</a>
<a name="44"><span class="lineNum"> 44 </span> : : </a>
<a name="45"><span class="lineNum"> 45 </span> :<span class="lineCov"> 3 : static inline unsigned long secs_to_tb(unsigned long secs)</span></a>
<a name="46"><span class="lineNum"> 46 </span> : : {</a>
<a name="47"><span class="lineNum"> 47 </span> :<span class="lineCov"> 3 : return secs * tb_hz;</span></a>
<a name="48"><span class="lineNum"> 48 </span> : : }</a>
<a name="49"><span class="lineNum"> 49 </span> : : </a>
<a name="50"><span class="lineNum"> 50 </span> :<span class="lineCov"> 1902 : static inline unsigned long tb_to_secs(unsigned long tb)</span></a>
<a name="51"><span class="lineNum"> 51 </span> : : {</a>
<a name="52"><span class="lineNum"> 52 </span> :<span class="lineCov"> 1902 : return tb / tb_hz;</span></a>
<a name="53"><span class="lineNum"> 53 </span> : : }</a>
<a name="54"><span class="lineNum"> 54 </span> : : </a>
<a name="55"><span class="lineNum"> 55 </span> :<span class="lineCov"> 11 : static inline unsigned long tb_remaining_nsecs(unsigned long tb)</span></a>
<a name="56"><span class="lineNum"> 56 </span> : : {</a>
<a name="57"><span class="lineNum"> 57 </span> :<span class="lineCov"> 11 : return tb % tb_hz;</span></a>
<a name="58"><span class="lineNum"> 58 </span> : : }</a>
<a name="59"><span class="lineNum"> 59 </span> : : </a>
<a name="60"><span class="lineNum"> 60 </span> :<span class="lineCov"> 7 : static inline unsigned long msecs_to_tb(unsigned long msecs)</span></a>
<a name="61"><span class="lineNum"> 61 </span> : : {</a>
<a name="62"><span class="lineNum"> 62 </span> :<span class="lineCov"> 7 : return msecs * (tb_hz / 1000);</span></a>
<a name="63"><span class="lineNum"> 63 </span> : : }</a>
<a name="64"><span class="lineNum"> 64 </span> : : </a>
<a name="65"><span class="lineNum"> 65 </span> :<span class="lineCov"> 1 : static inline unsigned long tb_to_msecs(unsigned long tb)</span></a>
<a name="66"><span class="lineNum"> 66 </span> : : {</a>
<a name="67"><span class="lineNum"> 67 </span> :<span class="lineCov"> 1 : return (tb * 1000) / tb_hz;</span></a>
<a name="68"><span class="lineNum"> 68 </span> : : }</a>
<a name="69"><span class="lineNum"> 69 </span> : : </a>
<a name="70"><span class="lineNum"> 70 </span> :<span class="lineCov"> 5 : static inline unsigned long usecs_to_tb(unsigned long usecs)</span></a>
<a name="71"><span class="lineNum"> 71 </span> : : {</a>
<a name="72"><span class="lineNum"> 72 </span> :<span class="lineCov"> 5 : return usecs * (tb_hz / 1000000);</span></a>
<a name="73"><span class="lineNum"> 73 </span> : : }</a>
<a name="74"><span class="lineNum"> 74 </span> : : </a>
<a name="75"><span class="lineNum"> 75 </span> :<span class="lineCov"> 2 : static inline unsigned long tb_to_usecs(unsigned long tb)</span></a>
<a name="76"><span class="lineNum"> 76 </span> : : {</a>
<a name="77"><span class="lineNum"> 77 </span> :<span class="lineCov"> 2 : return (tb * 1000000) / tb_hz;</span></a>
<a name="78"><span class="lineNum"> 78 </span> : : }</a>
<a name="79"><span class="lineNum"> 79 </span> : : </a>
<a name="80"><span class="lineNum"> 80 </span> : : extern unsigned long timespec_to_tb(const struct timespec *ts);</a>
<a name="81"><span class="lineNum"> 81 </span> : : </a>
<a name="82"><span class="lineNum"> 82 </span> : : /* time_wait - Wait a certain number of TB ticks while polling FSP */</a>
<a name="83"><span class="lineNum"> 83 </span> : : extern void time_wait(unsigned long duration);</a>
<a name="84"><span class="lineNum"> 84 </span> : : extern void time_wait_nopoll(unsigned long duration);</a>
<a name="85"><span class="lineNum"> 85 </span> : : </a>
<a name="86"><span class="lineNum"> 86 </span> : : /* time_wait_ms - Wait a certain number of milliseconds while polling FSP */</a>
<a name="87"><span class="lineNum"> 87 </span> : : extern void time_wait_ms(unsigned long ms);</a>
<a name="88"><span class="lineNum"> 88 </span> : : extern void time_wait_ms_nopoll(unsigned long ms);</a>
<a name="89"><span class="lineNum"> 89 </span> : : </a>
<a name="90"><span class="lineNum"> 90 </span> : : /* time_wait_us - Wait a certain number of microseconds while polling FSP */</a>
<a name="91"><span class="lineNum"> 91 </span> : : extern void time_wait_us(unsigned long us);</a>
<a name="92"><span class="lineNum"> 92 </span> : : extern void time_wait_us_nopoll(unsigned long us);</a>
<a name="93"><span class="lineNum"> 93 </span> : : </a>
<a name="94"><span class="lineNum"> 94 </span> : : /* nanosleep_nopoll - variant for use from hostservices */</a>
<a name="95"><span class="lineNum"> 95 </span> : : extern int nanosleep_nopoll(const struct timespec *req, struct timespec *rem);</a>
<a name="96"><span class="lineNum"> 96 </span> : : #endif /* __TIME_H */</a>
</pre>
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