doc/topics/sdk/ge/ge_normal_mode.html

<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-cn" lang="zh-cn" data-whc_version="26.0">
    <head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><meta name="description" content="非命令队列模式，即 normal 模式。 GE normal 模式的控制流程如下所示： 当用户态通过 open 函数打开 /dev/ge 设备节点，会调用到驱动中的 open。 当用户通过 close 关闭驱动时，会调用到驱动中的 release。 在 open 中主要是实现了模块 clock 的打开操作， 在 release 中实现了模块 clock 的关闭操作。 当用户态有多个用户打开 GE ..."/><meta name="DC.rights.owner" content="(C) 版权 2025"/><meta name="copyright" content="(C) 版权 2025"/><meta name="generator" content="DITA-OT"/><meta name="DC.type" content="concept"/><meta name="DC.creator" content="yan.wang"/><meta name="DC.date.created" content="2024-01-17"/><meta name="DC.date.modified" content="2024-12-04"/><meta name="DC.format" content="HTML5"/><meta name="DC.identifier" content="ge_normal_mode"/><meta name="DC.language" content="zh-CN"/><title>非命令队列模式</title><!--  Build number 2023110923.  --><meta name="wh-path2root" content="../../../"/><meta name="wh-toc-id" content=""/><meta name="wh-source-relpath" content="topics/sdk/ge/ge_normal_mode.dita"/><meta name="wh-out-relpath" content="topics/sdk/ge/ge_normal_mode.html"/>

    <link rel="stylesheet" type="text/css" href="../../../webhelp/app/commons.css?buildId=2023110923"/>
    <link rel="stylesheet" type="text/css" href="../../../webhelp/app/topic.css?buildId=2023110923"/>

    <script src="../../../webhelp/app/options/properties.js?buildId=20250121171154"></script>
    <script src="../../../webhelp/app/localization/strings.js?buildId=2023110923"></script>
    <script src="../../../webhelp/app/search/index/keywords.js?buildId=20250121171154"></script>
    <script defer="defer" src="../../../webhelp/app/commons.js?buildId=2023110923"></script>
    <script defer="defer" src="../../../webhelp/app/topic.js?buildId=2023110923"></script>
<link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-styles-web.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/notes.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-common.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-images.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/footnote.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-web-watermark.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/topic-body-list.css?buildId=2023110923"/></head>

    <body id="ge_normal_mode" class="wh_topic_page frmBody">
        <a href="#wh_topic_body" class="sr-only sr-only-focusable">
            跳转到主要内容
        </a>
        
        
        
        
        <header class="navbar navbar-default wh_header">
    <div class="container-fluid">
        <div class="wh_header_flex_container navbar-nav navbar-expand-md navbar-dark">
            <div class="wh_logo_and_publication_title_container">
                <div class="wh_logo_and_publication_title">
                    
                    <a href="http://www.artinchip.com" class=" wh_logo d-none d-sm-block "><img src="../../../company-logo-white.png" alt="RTOS SDK 使用指南SDK 指南文件"/></a>
                    <div class=" wh_publication_title "><a href="../../../index.html"><span class="booktitle"><span class="ph mainbooktitle">RTOS SDK 使用指南</span><span class="ph booktitlealt">SDK 指南文件</span></span></a></div>
                    
                </div>
                
                
            </div>

            <div class="wh_top_menu_and_indexterms_link collapse navbar-collapse" id="wh_top_menu_and_indexterms_link">
                
                
                
                
            </div>
        </div>
    </div>
</header>
        
        
         
        
        <div class=" wh_search_input navbar-form wh_topic_page_search search " role="form">
            
            
            
            <form id="searchForm" method="get" role="search" action="../../../search.html"><div><input type="search" placeholder="搜索 " class="wh_search_textfield" id="textToSearch" name="searchQuery" aria-label="搜索查询" required="required"/><button type="submit" class="wh_search_button" aria-label="搜索"><span class="search_input_text">搜索</span></button></div></form>
            
            
            
        </div>
        
        <div class="container-fluid" id="wh_topic_container">
            <div class="row">

                <nav class="wh_tools d-print-none navbar-expand-md" aria-label="Tools">
                    
                    <div data-tooltip-position="bottom" class=" wh_breadcrumb "></div>
                    
                    
                    
                    <div class="wh_right_tools">
                        <button class="wh_hide_highlight" aria-label="切换搜索突出显示" title="切换搜索突出显示"></button>
                        <button class="webhelp_expand_collapse_sections" data-next-state="collapsed" aria-label="折叠截面" title="折叠截面"></button>
                        
                        
                        
                        
                        <div class=" wh_print_link print d-none d-md-inline-block "><button onClick="window.print()" title="打印此页" aria-label="打印此页"></button></div>
                        
                        
                    </div>
                    
                </nav>
            </div>
            
            
            
            
            <div class="wh_content_area">
                <div class="row">
                    
                    
                    <div class="col-lg-10 col-md-10 col-sm-10 col-xs-12" id="wh_topic_body">
                        
                        <button id="wh_close_topic_toc_button" class="close-toc-button d-none" aria-label="Toggle topic table of content" aria-controls="wh_topic_toc" aria-expanded="true">
                            <span class="close-toc-icon-container">
                                <span class="close-toc-icon"></span>     
                            </span>
                        </button>
                        
                        <div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" role="article" aria-labelledby="ariaid-title1"><span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/ge/ge_normal_mode.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">非命令队列模式</h1><div class="date inPage">4 Dec 2024</div><div style="color: gray;">
                    Read time: 1 minute(s)
                </div><div class="- topic/body concept/conbody body conbody"><p class="- topic/p p" data-ofbid="d333764e23__20250121171837">非命令队列模式，即 normal 模式。</p><div class="- topic/p p" data-ofbid="d333764e25__20250121171837">GE normal 模式的控制流程如下所示：<ul class="- topic/ul ul" id="ge_normal_mode__ul_stj_lx4_bcc" data-ofbid="ge_normal_mode__ul_stj_lx4_bcc"><li class="- topic/li li" data-ofbid="d333764e28__20250121171837">当用户态通过 open 函数打开 /dev/ge 设备节点，会调用到驱动中的 open。</li><li class="- topic/li li" data-ofbid="d333764e30__20250121171837">当用户通过 close 关闭驱动时，会调用到驱动中的 release。</li><li class="- topic/li li" data-ofbid="d333764e32__20250121171837">在 open 中主要是实现了模块 clock 的打开操作， 在 release 中实现了模块 clock 的关闭操作。</li><li class="- topic/li li" data-ofbid="d333764e34__20250121171837">当用户态有多个用户打开 GE 驱动时，对驱动打开次数进行引用计数。</li><li class="- topic/li li" data-ofbid="d333764e36__20250121171837">至少有一个用户打开 GE 驱动时打开 GE 的 clock。</li><li class="- topic/li li" data-ofbid="d333764e38__20250121171837">当所有的用户都关闭 GE 驱动时关闭 GE 的 clock。 </li></ul></div><div class="- topic/p p" data-ofbid="d333764e40__20250121171837">
            <figure class="- topic/fig fig fignone" id="ge_normal_mode__fig_uvv_gbb_d1c" data-ofbid="ge_normal_mode__fig_uvv_gbb_d1c"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="ge_normal_mode__image_bvc_hbb_d1c" src="../../../images/ge/ge_sw_normal.png" alt="ge_sw_normal"/></div><br/><figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 1</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">非命令队列模式架构</span></figcaption></figure>
        </div><div class="- topic/p p" data-ofbid="d333764e49__20250121171837">在 Normal 模式下，用户态可用 <span class="+ topic/keyword pr-d/apiname keyword apiname">ioctl</span> 控制 GE，包括以下几种操作：<ul class="- topic/ul ul" id="ge_normal_mode__ul_d2l_jbb_d1c" data-ofbid="ge_normal_mode__ul_d2l_jbb_d1c"><li class="- topic/li li" data-ofbid="d333764e55__20250121171837">
                    <p class="- topic/p p" data-ofbid="d333764e57__20250121171837"><span class="+ topic/keyword pr-d/apiname keyword apiname">IOC_GE_VERSION</span></p>
                </li><li class="- topic/li li" data-ofbid="d333764e61__20250121171837">
                    <p class="- topic/p p" data-ofbid="d333764e63__20250121171837"><span class="+ topic/keyword pr-d/apiname keyword apiname">IOC_GE_MODE</span></p>
                </li><li class="- topic/li li" data-ofbid="d333764e67__20250121171837">
                    <p class="- topic/p p" data-ofbid="d333764e69__20250121171837"><span class="+ topic/keyword pr-d/apiname keyword apiname">IOC_GE_FILLRECT</span></p>
                </li><li class="- topic/li li" data-ofbid="d333764e73__20250121171837">
                    <p class="- topic/p p" data-ofbid="d333764e75__20250121171837"><span class="+ topic/keyword pr-d/apiname keyword apiname">IOC_GE_BITBLT</span></p>
                </li><li class="- topic/li li" data-ofbid="d333764e79__20250121171837">
                    <p class="- topic/p p" data-ofbid="d333764e81__20250121171837"><span class="+ topic/keyword pr-d/apiname keyword apiname">IOC_GE_ROTATE</span></p>
                </li></ul></div><p class="- topic/p p" data-ofbid="d333764e85__20250121171837">在 normal 模式下，对
                <span class="+ topic/keyword pr-d/apiname keyword apiname">IOC_GE_FILLRECT</span>、<span class="+ topic/keyword pr-d/apiname keyword apiname">IOC_GE_BITBLT</span>、<span class="+ topic/keyword pr-d/apiname keyword apiname">IOC_GE_ROTATE</span>
            接口的调用是同步的，即硬件执行任务完成后接口调用才会返回。 </p><section class="- topic/section section" id="ge_normal_mode__section_bq5_vpr_ndc" data-ofbid="ge_normal_mode__section_bq5_vpr_ndc"><h2 class="- topic/title title sectiontitle">GE 控制函数</h2>
            
            <div class="- topic/p p" data-ofbid="d333764e101__20250121171837">
                <ul class="- topic/ul ul" id="ge_normal_mode__ul_uz4_nqr_ndc" data-ofbid="ge_normal_mode__ul_uz4_nqr_ndc"><li class="- topic/li li" data-ofbid="d333764e104__20250121171837">
                        <div class="- topic/p p" data-ofbid="d333764e106__20250121171837"><strong class="+ topic/ph hi-d/b ph b">函数 <span class="+ topic/keyword pr-d/apiname keyword apiname">ge_open</span></strong>：打开
                            GE<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="ge_normal_mode__codeblock_vvs_4qr_ndc" data-ofbid="ge_normal_mode__codeblock_vvs_4qr_ndc"><strong class="hl-keyword">static</strong> <strong class="hl-keyword">int</strong> ge_open(<strong class="hl-keyword">struct</strong> inode *inode, <strong class="hl-keyword">struct</strong> file *file)
{
    mutex_lock(&amp;g_data-&gt;lock);
    <strong class="hl-keyword">if</strong> (g_data-&gt;refs == <span class="hl-number">0</span>) {
        ge_clk_enable(g_data);
    }
    g_data-&gt;refs++;
    mutex_unlock(&amp;g_data-&gt;lock);

    <strong class="hl-keyword">return</strong> nonseekable_open(inode, file);
}
</pre></div>
                    </li><li class="- topic/li li" data-ofbid="d333764e115__20250121171837">
                        <div class="- topic/p p" data-ofbid="d333764e117__20250121171837"><strong class="+ topic/ph hi-d/b ph b">函数 <span class="+ topic/keyword pr-d/apiname keyword apiname">ge_release</span></strong>：关闭
                            GE<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="ge_normal_mode__codeblock_ny3_3bb_d1c" data-ofbid="ge_normal_mode__codeblock_ny3_3bb_d1c"><strong class="hl-keyword">static</strong> <strong class="hl-keyword">int</strong> ge_release(<strong class="hl-keyword">struct</strong> inode *inode, <strong class="hl-keyword">struct</strong> file *file)
{
    mutex_lock(&amp;g_data-&gt;lock);
    <strong class="hl-keyword">if</strong> (g_data-&gt;refs == <span class="hl-number">1</span>) {
        ge_clk_disable(g_data);
    }
    g_data-&gt;refs--;
    mutex_unlock(&amp;g_data-&gt;lock);
    <strong class="hl-keyword">return</strong> <span class="hl-number">0</span>;
}</pre></div>
                    </li></ul>
            </div>
        </section><section class="- topic/section section" id="ge_normal_mode__section_z4j_qbb_d1c" data-ofbid="ge_normal_mode__section_z4j_qbb_d1c"><h2 class="- topic/title title sectiontitle">关键流程设计</h2>
            
            <p class="- topic/p p" data-ofbid="d333764e135__20250121171837">在 GE normal 模式下，GE 驱动各种功能通过 <span class="+ topic/keyword pr-d/apiname keyword apiname">ioctrl</span> 调用实现。</p>
            <div class="- topic/p p" data-ofbid="d333764e141__20250121171837">每一次 <span class="+ topic/keyword pr-d/apiname keyword apiname">ioctrl</span> 的调用，都包括以下步骤：<ol class="- topic/ol ol" id="ge_normal_mode__ol_nnr_smz_2dc" data-ofbid="ge_normal_mode__ol_nnr_smz_2dc"><li class="- topic/li li" data-ofbid="d333764e147__20250121171837">GE 参数配置。</li><li class="- topic/li li" data-ofbid="d333764e149__20250121171837">GE 模块中断开启。</li><li class="- topic/li li" data-ofbid="d333764e151__20250121171837">GE 硬件启动。</li><li class="- topic/li li" data-ofbid="d333764e153__20250121171837">GE 等待中断，当前线程进入等待状态，直到收到中断通知。</li><li class="- topic/li li" data-ofbid="d333764e155__20250121171837">硬件完成任务后，关闭中断。</li></ol>
            </div>
            <p class="- topic/p p" data-ofbid="d333764e159__20250121171837"><span class="+ topic/keyword pr-d/apiname keyword apiname">ioctrl</span> 通过 mutex 保护， 确保多线程环境下的安全性。在 normal 模式下，支持多用户同时打开驱动设备节点，并调用
                    <span class="+ topic/keyword pr-d/apiname keyword apiname">ioctrl</span>。</p>
            <figure class="- topic/fig fig fignone" id="ge_normal_mode__fig_elx_qbb_d1c" data-ofbid="ge_normal_mode__fig_elx_qbb_d1c"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="ge_normal_mode__image_apj_qbb_d1c" src="../../../images/ge/ge_sw_normal_interrupt.png" alt="normal_interrupt"/></div><br/><figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 2</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">Normal 模式中断流程</span></figcaption></figure>
            <div class="- topic/p p" data-ofbid="d333764e175__20250121171837">等待中断流程：<ul class="- topic/ul ul" id="ge_normal_mode__ul_v1k_hpm_f1c" data-ofbid="ge_normal_mode__ul_v1k_hpm_f1c"><li class="- topic/li li" data-ofbid="d333764e178__20250121171837">
                        <p class="- topic/p p" data-ofbid="d333764e180__20250121171837">在执行 <span class="+ topic/keyword pr-d/apiname keyword apiname">probe</span>
                            时初始化等待队列：<span class="+ topic/keyword pr-d/apiname keyword apiname">init_waitqueue_head(&amp;data-&gt;wait)</span>。</p>
                    </li><li class="- topic/li li" data-ofbid="d333764e189__20250121171837">
                        <p class="- topic/p p" data-ofbid="d333764e191__20250121171837">在 <span class="+ topic/keyword pr-d/apiname keyword apiname">ioctl</span> 中调用如下函数，使当前进程在等待队列中睡眠：</p>
                        <p class="- topic/p p" data-ofbid="d333764e197__20250121171837"><span class="+ topic/keyword pr-d/apiname keyword apiname">wait_event_timeout(data-&gt;wait, data-&gt;status,
                                msecs_to_jiffies(GE_TIMEOUT_MS))</span>。</p>
                    </li><li class="- topic/li li" data-ofbid="d333764e202__20250121171837">
                        <p class="- topic/p p" data-ofbid="d333764e204__20250121171837">在中断服务程序中调用 <span class="+ topic/keyword pr-d/apiname keyword apiname">wake_up(&amp;data-&gt;wait)</span>，唤醒等待队列中的睡眠进程。</p>
                    </li></ul></div>
        </section></div></article></main></div>
                        
                        
                        
                        
                        
                        
                    </div>
                    
                        <nav role="navigation" id="wh_topic_toc" aria-label="On this page" class="col-lg-2 d-none d-lg-block navbar d-print-none"> 
                            <div id="wh_topic_toc_content">
		                        
	                            <div class=" wh_topic_toc "><div class="wh_topic_label">在本页上</div><ul><li class="section-item"><div class="section-title"><a href="#ge_normal_mode__section_bq5_vpr_ndc" data-tocid="ge_normal_mode__section_bq5_vpr_ndc">GE 控制函数</a></div></li><li class="section-item"><div class="section-title"><a href="#ge_normal_mode__section_z4j_qbb_d1c" data-tocid="ge_normal_mode__section_z4j_qbb_d1c">关键流程设计</a></div></li></ul></div>
	                        	
                        	</div>
                        </nav>
                    
                </div>
            </div>
            
            
            
        </div> 
        <footer class="navbar navbar-default wh_footer">
  <div class=" footer-container mx-auto ">
    <title>footer def</title>
    <style><!--

.p1 {
  font-family: FangZhengShuSong, Times, serif;
}
.p2 {
  font-family: Arial, Helvetica, sans-serif;
}
.p3 {
  font-family: "Lucida Console", "Courier New", monospace;
}
    
--></style>
  

  
    
  
  
    
            
   
  

  <div class="webhelp.fragment.footer">
    <p class="p1">Copyright © 2019-2024 广东匠芯创科技有限公司. All rights reserved.</p>
  </div><div>
    <div class="generation_time">
      Update Time: 2025-01-21
    </div>        
  </div>
  </div>
</footer>
        
        <div id="go2top" class="d-print-none">
            <span class="oxy-icon oxy-icon-up"></span>
        </div>
        
        <div id="modal_img_large" class="modal">
            <span class="close oxy-icon oxy-icon-remove"></span>
            <div id="modal_img_container"></div>
            <div id="caption"></div>
        </div>
        
        
    <script src="${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer="defer"></script>

        
    </body>
</html>