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class="shortdesc">SPI ENC、CE、eFuse 等安全模块的介绍和使用说明。</p></div></div></div></li></ul></li></ul></div>
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<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_compare_mode.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">非命令队列和命令队列对比</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;"></div><div class="- topic/body concept/conbody body conbody"><div class="- topic/div div">
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<div class="- topic/p p" data-ofbid="d175659e26__20250121171622">CMD queue 与 normal 模式驱动的区别如下：<ul class="- topic/ul ul" id="ge-compare-mode__ul_kzz_t5r_ndc" data-ofbid="ge-compare-mode__ul_kzz_t5r_ndc"><li class="- topic/li li" data-ofbid="d175659e29__20250121171622">
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<div class="- topic/p p" data-ofbid="d175659e31__20250121171622">在 CMD queue 模式下，增加了 <span class="- topic/ph ph">hal_ge_write</span> 接口。命令队列通过 <span class="- topic/ph ph">hal_ge_write</span> 接口，以 batch 为单位发送给驱动。<ul class="- topic/ul ul" id="ge-compare-mode__ul_vwl_y5r_ndc" data-ofbid="ge-compare-mode__ul_vwl_y5r_ndc"><li class="- topic/li li" data-ofbid="d175659e40__20250121171622">
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<p class="- topic/p p" data-ofbid="d175659e42__20250121171622">一个 batch 中可以包含多个 task 的命令。</p>
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</li><li class="- topic/li li" data-ofbid="d175659e45__20250121171622">
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<p class="- topic/p p" data-ofbid="d175659e47__20250121171622"><span class="- topic/ph ph">hal_ge_write</span> 操作是异步的，相应的命令只要写入驱动中的 cmd queue
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buffer 即返回，不用等待硬件执行完当前 batch 中的所有命令。当应用需要等待发送的命令执行完成时可以调用
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<span class="+ topic/keyword pr-d/apiname keyword apiname">IOC_GE_SYNC</span> 接口。</p>
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<p class="- topic/p p" data-ofbid="d175659e57__20250121171622">在 CMD queue 模式下，通过 <span class="- topic/ph ph">hal_ge_write</span> 接口写入以 batch
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为单位的命令， 硬件可以连续执行多个 task。</p>
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<p class="- topic/p p" data-ofbid="d175659e66__20250121171622">在 normal 模式下，通过 <span class="+ topic/keyword pr-d/apiname keyword apiname">IOC_GE_BITBLT</span>
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等操作接口执行命令，且硬件一次只能执行一个任务。</p>
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