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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic topic" 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/sdmc/sdmc-design-guide-lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">设计说明</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
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Read time: 6 minute(s)
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</div><div class="- topic/body body"><section class="- topic/section section" id="id__id2" data-ofbid="id__id2"><h2 class="- topic/title title sectiontitle">源码说明</h2>
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<p class="- topic/p p" data-ofbid="d310600e24__20250121171815">源代码位于 <code class="+ topic/ph pr-d/codeph ph codeph">bsp/artinchip/</code>：</p>
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<ul class="- topic/ul ul simple" id="id__ul_ilf_cyh_bdc" data-ofbid="id__ul_ilf_cyh_bdc"><li class="- topic/li li" data-ofbid="d310600e31__20250121171815">
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<p class="- topic/p p" data-ofbid="d310600e33__20250121171815"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv/sdmc/drv_sdmc.c</span>，SDMC Driver 层实现</p>
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</li><li class="- topic/li li" data-ofbid="d310600e38__20250121171815">
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<p class="- topic/p p" data-ofbid="d310600e40__20250121171815"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/hal/sdmc/hal_sdmc.c</span>，SDMC HAL 层实现</p>
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</li><li class="- topic/li li" data-ofbid="d310600e45__20250121171815">
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<p class="- topic/p p" data-ofbid="d310600e47__20250121171815"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/include/hal/hal_sdmc.h</span>，SDMC HAL 层接口头文件</p>
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</li></ul>
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<p class="- topic/p p" data-ofbid="d310600e53__20250121171815">此外，提供了一个 Baremetal 设计实例供参考，源代码位于：</p>
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<ul class="- topic/ul ul simple" id="id__ul_jlf_cyh_bdc" data-ofbid="id__ul_jlf_cyh_bdc"><li class="- topic/li li" data-ofbid="d310600e57__20250121171815">
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<p class="- topic/p p" data-ofbid="d310600e59__20250121171815"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv_bare/sdmc/sdmc.c</span>，Baremetal 的 SDMC
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Driver 层实现</p>
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</li><li class="- topic/li li" data-ofbid="d310600e64__20250121171815">
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<p class="- topic/p p" data-ofbid="d310600e66__20250121171815"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv_bare/sdmc/mmc.c</span>，Baremetal 的 SDMC
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Driver 层使用实例</p>
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</li><li class="- topic/li li" data-ofbid="d310600e71__20250121171815">
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<p class="- topic/p p" data-ofbid="d310600e73__20250121171815"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv_bare/sdmc/sdmc.h</span>，Baremetal 的 SDMC
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Driver 层头文件</p>
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</li><li class="- topic/li li" data-ofbid="d310600e78__20250121171815">
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<p class="- topic/p p" data-ofbid="d310600e80__20250121171815"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/include/drv_bare/mmc.h</span>，Baremetal 的 SDMC
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Driver 层使用实例头文件</p>
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</li><li class="- topic/li li" data-ofbid="d310600e85__20250121171815">
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<p class="- topic/p p" data-ofbid="d310600e87__20250121171815"><span class="+ topic/ph sw-d/filepath ph filepath">packages/third-party/dfs</span>，Baremetal 的文件系统实现</p>
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</li></ul>
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</section><section class="- topic/section section" id="id__id3" data-ofbid="id__id3"><h2 class="- topic/title title sectiontitle">模块架构</h2>
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<p class="- topic/p p" data-ofbid="d310600e98__20250121171815">SDMC 驱动 Driver 层采用 RT-Thread 的 SDIO 设备驱动框架，如果只使用 HAL 层也可以支持 Baremetal 方式的应用场景。</p>
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<figure class="- topic/fig fig fignone" id="id__id12" data-ofbid="id__id12"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_klf_cyh_bdc" src="../../../images/sdmc/sw_system15.png" width="288" alt="sw_system"/></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">SDMC 模块驱动的软件框架</span></figcaption></figure>
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<p class="- topic/p p" data-ofbid="d310600e108__20250121171815">其中：</p>
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<ul class="- topic/ul ul arabic simple" id="id__ol_llf_cyh_bdc" data-ofbid="id__ol_llf_cyh_bdc"><li class="- topic/li li" data-ofbid="d310600e112__20250121171815">
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|
<p class="- topic/p p" data-ofbid="d310600e114__20250121171815">DFS 层：Baremetal 文件系统层，提供接口给 Baremetal APP 读写 Baremetal SDMC 文件。</p>
|
|||
|
|
</li><li class="- topic/li li" data-ofbid="d310600e117__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e119__20250121171815">Baremetal MMC 层：向上对接 DFS，提供读写接口；向下对接 Baremetal SDMC driver 层。</p>
|
|||
|
|
</li><li class="- topic/li li" data-ofbid="d310600e122__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e124__20250121171815">Baremetal SDMC Driver 层：提供 SDMC 驱动初始化接口，方便 Baremetal MMC 层的访问。</p>
|
|||
|
|
</li><li class="- topic/li li" data-ofbid="d310600e127__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e129__20250121171815">SDMC Driver 层：负责对接 SDIO 设备框架，注册成块设备，方便应用层的访问。</p>
|
|||
|
|
</li><li class="- topic/li li" data-ofbid="d310600e132__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e134__20250121171815">SDMC HAL 层：封装了寄存器级别的操作，对 Driver 层屏蔽硬件级别的访问。</p>
|
|||
|
|
</li></ul>
|
|||
|
|
</section><section class="- topic/section section" id="id__id4" data-ofbid="id__id4"><h2 class="- topic/title title sectiontitle">关键流程设计</h2>
|
|||
|
|
|
|||
|
|
<div class="- topic/div div section" id="id__rt-thread">
|
|||
|
|
<strong class="+ topic/ph hi-d/b ph b">RT-Thread 初始化流程</strong>
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e148__20250121171815">SDMC 控制器驱动的初始化接口通过 <code class="+ topic/ph pr-d/codeph ph codeph">INIT_DEVICE_EXPORT(drv_sdmc_init)</code> 完成注册。
|
|||
|
|
其中，主要步骤如下：</p><ol class="- topic/ol ol arabic simple" id="id__ol_mlf_cyh_bdc" data-ofbid="id__ol_mlf_cyh_bdc"><li class="- topic/li li" data-ofbid="d310600e154__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e156__20250121171815">分配 host 管理结构（包括 rt_mmcsd_host 和 aic_sdmc）</p>
|
|||
|
|
</li><li class="- topic/li li" data-ofbid="d310600e159__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e161__20250121171815">初始化模块的 clk</p>
|
|||
|
|
</li><li class="- topic/li li" data-ofbid="d310600e164__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e166__20250121171815">注册中断</p>
|
|||
|
|
</li><li class="- topic/li li" data-ofbid="d310600e169__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e171__20250121171815">初始化控制器</p>
|
|||
|
|
</li><li class="- topic/li li" data-ofbid="d310600e174__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e176__20250121171815">通知 mmcsd 监测线程（mmcsd_change）</p>
|
|||
|
|
</li></ol></div>
|
|||
|
|
<div class="- topic/div div section" id="id__baremetal">
|
|||
|
|
<strong class="+ topic/ph hi-d/b ph b">Baremetal 初始化流程</strong>
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e185__20250121171815">SDMC 控制器驱动通过 <code class="+ topic/ph pr-d/codeph ph codeph">mmc_init()</code> 完成初始化。 其中，主要步骤如下：</p><ol class="- topic/ol ol arabic simple" id="id__ol_nlf_cyh_bdc" data-ofbid="id__ol_nlf_cyh_bdc"><li class="- topic/li li" data-ofbid="d310600e191__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e193__20250121171815">分配 host 管理结构和 dev 设备信息结构（aic_sdmc 和 aic_sdmc_dev）</p>
|
|||
|
|
</li><li class="- topic/li li" data-ofbid="d310600e196__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e198__20250121171815">初始化模块的 clk</p>
|
|||
|
|
</li><li class="- topic/li li" data-ofbid="d310600e201__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e203__20250121171815">注册中断</p>
|
|||
|
|
</li><li class="- topic/li li" data-ofbid="d310600e206__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e208__20250121171815">初始化控制器</p>
|
|||
|
|
</li></ol><div class="- topic/note note note note_note" id="id__note_dkp_y13_ddc" data-ofbid="id__note_dkp_y13_ddc"><span class="note__title">注：</span>
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e213__20250121171815">为了简化设计，SDMC 驱动中目前未使用中断方式，使用轮询方式完成和 Device 的交互。</p>
|
|||
|
|
</div></div>
|
|||
|
|
</section><section class="- topic/section section" id="id__id5" data-ofbid="id__id5"><h2 class="- topic/title title sectiontitle">数据结构设计</h2>
|
|||
|
|
|
|||
|
|
<div class="- topic/div div section" id="id__struct-aic-sdmc-host">
|
|||
|
|
<strong class="+ topic/ph hi-d/b ph b">struct aic_sdmc_host</strong>
|
|||
|
|
<div class="- topic/p p" data-ofbid="d310600e227__20250121171815">属于 HAL 层接口，定义了 SDMC 控制器
|
|||
|
|
管理信息：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_hb3_y13_ddc" data-ofbid="id__codeblock_hb3_y13_ddc"><strong class="hl-keyword">struct</strong> aic_sdmc_host {
|
|||
|
|
<strong class="hl-keyword">volatile</strong> <strong class="hl-keyword">void</strong> *base;
|
|||
|
|
u32 is_sdio;
|
|||
|
|
u32 fifoth_val;
|
|||
|
|
#ifdef AIC_SDMC_IRQ_MODE
|
|||
|
|
aicos_sem_t complete;
|
|||
|
|
#endif
|
|||
|
|
};</pre></div></div>
|
|||
|
|
<div class="- topic/div div section" id="id__struct-aic-sdmc-idma-desc">
|
|||
|
|
<strong class="+ topic/ph hi-d/b ph b">struct aic_sdmc_idma_desc</strong>
|
|||
|
|
<div class="- topic/p p" data-ofbid="d310600e237__20250121171815">属于 HAL 层接口，记录了 SDMC 控制器内部 DMA
|
|||
|
|
访问的描述符：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_tbh_y13_ddc" data-ofbid="id__codeblock_tbh_y13_ddc"><strong class="hl-keyword">struct</strong> aic_sdmc_idma_desc {
|
|||
|
|
u32 flags;
|
|||
|
|
u32 cnt;
|
|||
|
|
u32 addr;
|
|||
|
|
u32 next_addr;
|
|||
|
|
} __aligned(<span class="hl-number">8</span>);</pre></div>
|
|||
|
|
</div>
|
|||
|
|
<div class="- topic/div div section" id="id__struct-aic-sdmc">
|
|||
|
|
<strong class="+ topic/ph hi-d/b ph b">struct aic_sdmc</strong>
|
|||
|
|
<div class="- topic/div div section" id="id__id6">
|
|||
|
|
<strong class="+ topic/ph hi-d/b ph b">RT-Thread</strong>
|
|||
|
|
<div class="- topic/p p" data-ofbid="d310600e253__20250121171815">属于 Driver 层的内部接口，用于记录 SDMC
|
|||
|
|
控制器的管理信息：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_gw2_y13_ddc" data-ofbid="id__codeblock_gw2_y13_ddc"><strong class="hl-keyword">struct</strong> aic_sdmc {
|
|||
|
|
<strong class="hl-keyword">struct</strong> rt_mmcsd_host *rthost;
|
|||
|
|
<strong class="hl-keyword">struct</strong> rt_mmcsd_req *req;
|
|||
|
|
<strong class="hl-keyword">struct</strong> rt_mmcsd_cmd *cmd;
|
|||
|
|
<strong class="hl-keyword">struct</strong> aic_sdmc_host host;
|
|||
|
|
|
|||
|
|
rt_uint32_t *buf;
|
|||
|
|
u32 clk;
|
|||
|
|
u32 irq;
|
|||
|
|
u32 index;
|
|||
|
|
u32 cid[<span class="hl-number">4</span>];
|
|||
|
|
|
|||
|
|
<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">int</strong> quirks;
|
|||
|
|
<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">int</strong> caps;
|
|||
|
|
<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">int</strong> version;
|
|||
|
|
<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">int</strong> clock;
|
|||
|
|
<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">int</strong> sclk_rate;
|
|||
|
|
<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">int</strong> div;
|
|||
|
|
<strong class="hl-keyword">int</strong> buswidth;
|
|||
|
|
<strong class="hl-keyword">int</strong> ddr_mode;
|
|||
|
|
|
|||
|
|
<em class="hl-comment">/* use fifo mode to read and write data */</em>
|
|||
|
|
<strong class="hl-keyword">int</strong> fifo_mode;
|
|||
|
|
|
|||
|
|
<strong class="hl-keyword">struct</strong> aic_sdmc_pdata *pdata;
|
|||
|
|
|
|||
|
|
u8 is_enable;
|
|||
|
|
};</pre></div></div><div class="- topic/div div section" id="id__id7">
|
|||
|
|
<strong class="+ topic/ph hi-d/b ph b">Baremetal</strong>
|
|||
|
|
<div class="- topic/p p" data-ofbid="d310600e262__20250121171815">属于 Baremetal Driver 层的内部接口，用于记录 SDMC
|
|||
|
|
控制器的管理信息：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_dnb_y13_ddc" data-ofbid="id__codeblock_dnb_y13_ddc"><strong class="hl-keyword">struct</strong> aic_sdmc {
|
|||
|
|
<strong class="hl-keyword">struct</strong> aic_sdmc_dev *dev;
|
|||
|
|
<strong class="hl-keyword">struct</strong> aic_sdmc_cmd *cmd;
|
|||
|
|
<strong class="hl-keyword">struct</strong> aic_sdmc_data *data;
|
|||
|
|
<strong class="hl-keyword">struct</strong> aic_sdmc_host host;
|
|||
|
|
|
|||
|
|
u32 *buf;
|
|||
|
|
u32 clk;
|
|||
|
|
u32 irq;
|
|||
|
|
u32 index;
|
|||
|
|
|
|||
|
|
<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">int</strong> quirks;
|
|||
|
|
<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">int</strong> caps;
|
|||
|
|
<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">int</strong> version;
|
|||
|
|
<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">int</strong> clock;
|
|||
|
|
<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">int</strong> sclk_rate;
|
|||
|
|
<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">int</strong> div;
|
|||
|
|
<strong class="hl-keyword">int</strong> buswidth;
|
|||
|
|
<strong class="hl-keyword">int</strong> ddr_mode;
|
|||
|
|
|
|||
|
|
<em class="hl-comment">/* use fifo mode to read and write data */</em>
|
|||
|
|
<strong class="hl-keyword">int</strong> fifo_mode;
|
|||
|
|
|
|||
|
|
<strong class="hl-keyword">struct</strong> aic_sdmc_pdata *pdata;
|
|||
|
|
};</pre></div></div></div>
|
|||
|
|
</section><section class="- topic/section section" id="id__driver" data-ofbid="id__driver"><h2 class="- topic/title title sectiontitle">Driver 层接口设计</h2>
|
|||
|
|
|
|||
|
|
<ol class="- topic/ol ol arabic simple" id="id__ol_slf_cyh_bdc" data-ofbid="id__ol_slf_cyh_bdc"><li class="- topic/li li" data-ofbid="d310600e273__20250121171815">
|
|||
|
|
<p class="- topic/p p" data-ofbid="d310600e275__20250121171815">Baremetal Driver 参考 Driver 层设计，去除了 RT-Thread 所需的结构信息。</p>
|
|||
|
|
</li><li class="- topic/li li" data-ofbid="d310600e278__20250121171815">
|
|||
|
|
<div class="- topic/p p" data-ofbid="d310600e280__20250121171815">以下接口皆为 SDIO 设备驱动框架所需要的标准接口，目前 SDMC 驱动仅实现了其中的 request 和 set_iocfg
|
|||
|
|
接口。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_hz5_x13_ddc" data-ofbid="id__codeblock_hz5_x13_ddc"><strong class="hl-keyword">struct</strong> rt_mmcsd_host_ops {
|
|||
|
|
<strong class="hl-keyword">void</strong> (*request)(<strong class="hl-keyword">struct</strong> rt_mmcsd_host *host, <strong class="hl-keyword">struct</strong> rt_mmcsd_req *req);
|
|||
|
|
<strong class="hl-keyword">void</strong> (*set_iocfg)(<strong class="hl-keyword">struct</strong> rt_mmcsd_host *host, <strong class="hl-keyword">struct</strong> rt_mmcsd_io_cfg *io_cfg);
|
|||
|
|
rt_int32_t (*get_card_status)(<strong class="hl-keyword">struct</strong> rt_mmcsd_host *host);
|
|||
|
|
<strong class="hl-keyword">void</strong> (*enable_sdio_irq)(<strong class="hl-keyword">struct</strong> rt_mmcsd_host *host, rt_int32_t en);
|
|||
|
|
};</pre></div>
|
|||
|
|
</li></ol>
|
|||
|
|
<div class="- topic/div div section" id="id__aic-sdmc-request">
|
|||
|
|
<strong class="+ topic/ph hi-d/b ph b">aic_sdmc_request</strong>
|
|||
|
|
<div class="table-container"><table class="- topic/table table frame-all" id="id__table_ulf_cyh_bdc" data-ofbid="id__table_ulf_cyh_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">RT-Thread</span></caption><colgroup><col/><col/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_ulf_cyh_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_ulf_cyh_bdc__entry__2">void aic_sdmc_request(struct rt_mmcsd_host *rthost, struct
|
|||
|
|
rt_mmcsd_req *req)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ulf_cyh_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ulf_cyh_bdc__entry__2">请求 SDMC 控制器向 Device 发送一个报文</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ulf_cyh_bdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ulf_cyh_bdc__entry__2">
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div"><code class="+ topic/ph pr-d/codeph ph codeph">rthost</code> : 指向 SDIO 层的 mmcsd 控制器</div>
|
|||
|
|
<div class="- topic/div div"><code class="+ topic/ph pr-d/codeph ph codeph">req</code> ：请求的参数和资源</div>
|
|||
|
|
</div>
|
|||
|
|
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ulf_cyh_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ulf_cyh_bdc__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_ulf_cyh_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_ulf_cyh_bdc__entry__2">-</td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_vlf_cyh_bdc" data-ofbid="id__table_vlf_cyh_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 2</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">Baremetal</span></caption><colgroup><col/><col/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_vlf_cyh_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_vlf_cyh_bdc__entry__2">void aic_sdmc_request(struct aic_sdmc *host, struct
|
|||
|
|
aic_sdmc_cmd *cmd, struct aic_sdmc_data *data)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_vlf_cyh_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_vlf_cyh_bdc__entry__2">请求 SDMC 控制器向 Device 发送一个报文</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_vlf_cyh_bdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_vlf_cyh_bdc__entry__2">
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">host: 指向上层调用的 mmcsd 控制器</div>
|
|||
|
|
<div class="- topic/div div"><code class="+ topic/ph pr-d/codeph ph codeph">cmd</code> : 请求发送的命令</div>
|
|||
|
|
<div class="- topic/div div"><code class="+ topic/ph pr-d/codeph ph codeph">data</code> : 请求发送的数据</div>
|
|||
|
|
</div>
|
|||
|
|
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_vlf_cyh_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_vlf_cyh_bdc__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_vlf_cyh_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_vlf_cyh_bdc__entry__2">-</td></tr></tbody></table></div></div>
|
|||
|
|
<div class="- topic/div div section" id="id__aic-sdmc-set-iocfg">
|
|||
|
|
<strong class="+ topic/ph hi-d/b ph b">aic_sdmc_set_iocfg</strong>
|
|||
|
|
<div class="table-container"><table class="- topic/table table frame-all" id="id__table_wlf_cyh_bdc" data-ofbid="id__table_wlf_cyh_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 3</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">RT-Thread</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_wlf_cyh_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_wlf_cyh_bdc__entry__2">void aic_sdmc_set_iocfg(struct rt_mmcsd_host *rthost, struct
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rt_mmcsd_io_cfg *io_cfg)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_wlf_cyh_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_wlf_cyh_bdc__entry__2">配置位宽、DDR 模式、clock、power 模式等信息</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_wlf_cyh_bdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_wlf_cyh_bdc__entry__2">
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<div class="- topic/div div">
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<div class="- topic/div div"><code class="+ topic/ph pr-d/codeph ph codeph">rthost</code> : 指向 SDIO 层的 mmcsd 控制器</div>
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<div class="- topic/div div"><code class="+ topic/ph pr-d/codeph ph codeph">io_cfg</code> ：配置参数</div>
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</div>
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</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_wlf_cyh_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_wlf_cyh_bdc__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_wlf_cyh_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_wlf_cyh_bdc__entry__2">-</td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_xlf_cyh_bdc" data-ofbid="id__table_xlf_cyh_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 4</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">Baremetal</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_xlf_cyh_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_xlf_cyh_bdc__entry__2">void aic_sdmc_set_cfg(struct aic_sdmc *host)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_xlf_cyh_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_xlf_cyh_bdc__entry__2">配置位宽、DDR 模式、clock、power 模式等信息</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_xlf_cyh_bdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_xlf_cyh_bdc__entry__2">
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<div class="- topic/div div">
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<div class="- topic/div div"><code class="+ topic/ph pr-d/codeph ph codeph">host</code> : 指向上层调用的 mmcsd 控制器</div>
|
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</div>
|
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</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_xlf_cyh_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_xlf_cyh_bdc__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_xlf_cyh_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_xlf_cyh_bdc__entry__2">-</td></tr></tbody></table></div></div>
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</section><section class="- topic/section section" id="id__hal" data-ofbid="id__hal"><h2 class="- topic/title title sectiontitle">HAL 层接口设计</h2>
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<div class="- topic/p p" data-ofbid="d310600e485__20250121171815">HAL 层的函数接口声明存放在 <span class="+ topic/ph sw-d/filepath ph filepath">hal_sdmc.h</span>
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中，主要接口有：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_smc_513_ddc" data-ofbid="id__codeblock_smc_513_ddc"><strong class="hl-keyword">void</strong> hal_sdmc_idma_update_intstat(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host);
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<strong class="hl-keyword">int</strong> hal_sdmc_idma_start(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 size, u32 read,
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u32 *buf, <strong class="hl-keyword">struct</strong> bounce_buffer *bbstate);
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<strong class="hl-keyword">int</strong> hal_sdmc_idma_stop(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host,
|
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<strong class="hl-keyword">struct</strong> bounce_buffer *bbstate, u32 read);
|
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<strong class="hl-keyword">void</strong> hal_sdmc_idma_disable(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host);
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u8 hal_sdmc_get_idma_status(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host);
|
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<strong class="hl-keyword">void</strong> hal_sdmc_idma_prepare(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host,
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u32 blksize, u32 blks,
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<strong class="hl-keyword">struct</strong> aic_sdmc_idma_desc *cur_idma,
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<strong class="hl-keyword">void</strong> *bounce_buffer);
|
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<strong class="hl-keyword">int</strong> hal_sdmc_data_rx(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 *buf, u32 size);
|
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<strong class="hl-keyword">int</strong> hal_sdmc_data_tx(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 *buf, u32 size);
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u32 hal_sdmc_int_stat(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host);
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<strong class="hl-keyword">void</strong> hal_sdmc_int_clr(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 mask);
|
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<strong class="hl-keyword">int</strong> hal_sdmc_is_busy(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host);
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<strong class="hl-keyword">void</strong> hal_sdmc_set_blk(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 blksize, u32 blks);
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<strong class="hl-keyword">void</strong> hal_sdmc_set_arg(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 arg);
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<strong class="hl-keyword">void</strong> hal_sdmc_set_cmd(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 cmd);
|
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|
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u32 hal_sdmc_wait_cmd_started(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host);
|
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<strong class="hl-keyword">void</strong> hal_sdmc_get_rsp(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 *buf, u32 all);
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|
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<strong class="hl-keyword">void</strong> aic_sdmc_set_ext_clk_mux(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 mux);
|
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|
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<strong class="hl-keyword">void</strong> hal_sdmc_set_phase(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 drv, u32 smp);
|
|||
|
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<strong class="hl-keyword">void</strong> hal_sdmc_set_buswidth(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 buswidth);
|
|||
|
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<strong class="hl-keyword">void</strong> hal_sdmc_set_ddrmode(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 ddr);
|
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|
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<strong class="hl-keyword">void</strong> hal_sdmc_clk_disable(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host);
|
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|
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<strong class="hl-keyword">void</strong> hal_sdmc_clk_enable(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host);
|
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|
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<strong class="hl-keyword">void</strong> hal_sdmc_sdio_irq_enable(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 en);
|
|||
|
|
<strong class="hl-keyword">void</strong> hal_sdmc_set_div(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 div);
|
|||
|
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|
|||
|
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<strong class="hl-keyword">void</strong> hal_sdmc_fifo_init(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 *thd);
|
|||
|
|
<strong class="hl-keyword">int</strong> hal_sdmc_reset(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host, u32 value);
|
|||
|
|
<strong class="hl-keyword">void</strong> hal_sdmc_init(<strong class="hl-keyword">struct</strong> aic_sdmc_host *host);</pre></div>
|
|||
|
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</section></div></article></main></div>
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<div id="wh_topic_toc_content">
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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="#id__id2" data-tocid="id__id2">源码说明</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id3" data-tocid="id__id3">模块架构</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id4" data-tocid="id__id4">关键流程设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id5" data-tocid="id__id5">数据结构设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__driver" data-tocid="id__driver">Driver 层接口设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__hal" data-tocid="id__hal">HAL 层接口设计</a></div></li></ul></div>
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Update Time: 2025-01-21
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