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< / 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， ： < 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(& g_data-> lock);
< strong class = "hl-keyword" > if< / strong > (g_data-> refs == < span class = "hl-number" > 0< / span > ) {
ge_clk_enable(g_data);
}
g_data-> refs++;
mutex_unlock(& g_data-> 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(& g_data-> lock);
< strong class = "hl-keyword" > if< / strong > (g_data-> refs == < span class = "hl-number" > 1< / span > ) {
ge_clk_disable(g_data);
}
g_data-> refs--;
mutex_unlock(& g_data-> 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， < 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(& data-> 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-> wait, data-> 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(& data-> wait)< / span > ，唤醒等待队列中的睡眠进程。< / p >
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< 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 >
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