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<span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" title="Edit this document" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/mac/mac-key-procedure.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">关键流程设计</h1>
<div class="date inPage">15 Jan 2024</div><div style="color: gray;">
Read time: 2 minute(s)
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<div class="- topic/body concept/conbody body conbody"><p class="- topic/shortdesc shortdesc"></p>
<div class="- topic/p p" data-ofbid="d189042e35__20250123155220">
<ul class="- topic/ul ul" id="mac_key_procedure__ul_uq1_2cs_21c" data-ofbid="mac_key_procedure__ul_uq1_2cs_21c">
<li class="- topic/li li" data-ofbid="d189042e39__20250123155220">初始化流程<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="mac_key_procedure__codeblock_mqg_2cs_21c" data-ofbid="mac_key_procedure__codeblock_mqg_2cs_21c"><code>|--&gt;aicmac_platform_get_resources
|--&gt;kzalloc aicma_resources
|--&gt;platform_get_irq_byname
|--&gt;devm_platform_ioremap_resource
|--&gt;aicmac_platform_get_config
|--&gt;aicmac_platform_init_data
|--&gt;aicmac_phy_init_data
|--&gt;aicmac_mac_init_data
|--&gt;aicmac_mdio_init_data
|--&gt;aicmac_mda_init_data
|--&gt;aicmac_napi_init_data
|--&gt;aicmac_<span class="hl-number">1588</span>_init_data
|--&gt;aicmac_platform_get_mac_addr
|--&gt;aicmac_platform_init_ioirq
|--&gt;handle clk: mac clk, pclk
|--&gt;aicmac_<span class="hl-number">1588</span>_init_clk
|--&gt;devm_reset_control_get
|--&gt;aicmac_core_init
|--&gt;devm_alloc_etherdev_mqs
|--&gt;netdev_priv(ndev)
|--&gt;create_singlethread_workqueue
|--&gt;aicmac_service_task
|--&gt;reset_control_assert
|--&gt;aicmac_mac_init
|--&gt;aicmac_mac_ip_init
|--&gt;aicmac_mac_reg_core_init
|--&gt;aicmac_dma_init
|--&gt;dma_set_mask_and_coherent
|--&gt;aicmac_napi_init
|--&gt;netif_set_real_num_rx_queues
|--&gt;netif_set_real_num_tx_queues
|--&gt;aicmac_core_setup_napiop
|--&gt;netif_napi_add(rx)
|--&gt;netif_napi_add(tx)
|--&gt;mutex_init
|--&gt;aicmac_mdio_register
|--&gt;mdiobus_alloc
|--&gt;of_mdiobus_register
|--&gt;mdiobus_get_phy
|--&gt;aicmac_phy_init
|--&gt;phylink_create
|--&gt;aicmac_<span class="hl-number">1588</span>_init
|--&gt;ptp_clock_register
|--&gt;register_netdev</code></pre></li>
<li class="- topic/li li" data-ofbid="d189042e44__20250123155220">设备打开流程<div class="- topic/p p" data-ofbid="d189042e46__20250123155220">如果在终端执行 “ifconfig eth0 up”，则进行设备打开流程，函数 aicmac_open 被调用 ..
code-block:<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="mac_key_procedure__codeblock_opl_fcs_21c" data-ofbid="mac_key_procedure__codeblock_opl_fcs_21c"><code>aicmac_open
|--&gt;aicmac_mac_reg_core_init
|--&gt;aicmac_mac_reg_init_basic_config(mac, dev);
|--&gt;aicmac_mac_reg_init_tx_func(mac, dev);
|--&gt;aicmac_mac_reg_init_rx_func(mac, dev);
|--&gt;aicmac_phy_connect
|--&gt;phylink_of_phy_connect
|--&gt;mdiobus_get_phy
|--&gt;phylink_connect_phy
|--&gt;aicmac_dma_ring_set_<span class="hl-number">16</span>kib_bfsize
|--&gt;aicmac_dma_ring_set_bfsize
|--&gt;aicmac_dma_alloc_dma_desc_resources
|--&gt;aicmac_dma_alloc_dma_rx_desc_resources
|--&gt;aicmac_dma_alloc_dma_rx_desc_resources
|--&gt;aicmac_dma_init_desc_rings
|--&gt;aicmac_dma_init_rx_desc_rings
|--&gt;aicmac_dma_init_tx_desc_rings
|--&gt;aicmac_dma_clear_rx_descriptors
|--&gt;aicmac_dma_clear_tx_descriptors
|--&gt;aicmac_hw_setup
|--&gt;aicmac_dma_init_engine
|--&gt;aicmac_mac_reg_reset
|--&gt;aicmac_mac_reg_set_umac_addr
|--&gt;aicmac_mac_reg_core_init
|--&gt;aicmac_mac_reg_rx_ipc_enable
|--&gt;aicmac_mac_reg_enable_mac
|--&gt;aicmac_dma_operation_mode
|--&gt;aicmac_dma_reg_operation_mode_rx
|--&gt;aicmac_dma_reg_operation_mode_tx
|--&gt;aicmac_dma_start_all_dma
|--&gt;aicmac_dma_reg_start_rx
|--&gt;aicmac_dma_reg_start_tx
|--&gt;aicmac_init_coalesce
|--&gt;aicmac_tx_timer
|--&gt;phylink_start
|--&gt;request_irq-&gt;aicmac_interrupt
|--&gt;aicmac_enable_all_queues
|--&gt;netif_tx_start_all_queues</code></pre></div><div class="- topic/p p" data-ofbid="d189042e50__20250123155220"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="mac_key_procedure__image_bcn_gbs_21c" src="../../../images/mac/mac-open.jpg" alt="mac-open"/></div><br/></div></li>
<li class="- topic/li li" data-ofbid="d189042e57__20250123155220">数据发送流程<div class="- topic/p p" data-ofbid="d189042e59__20250123155220">执行任何的发送操作(如 ping 命令)，aicmac_xmit 将被调用 ..
code-block:<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="mac_key_procedure__codeblock_o55_gcs_21c" data-ofbid="mac_key_procedure__codeblock_o55_gcs_21c"><code>aicmac_xmit
|--&gt;aicmac_tx_avail
|--&gt;aicmac_vlan_insert
|--&gt;aicmac_dma_ring_is_jumbo_frm
|--&gt;aicmac_dma_ring_jumbo_frm
|--&gt;aicmac_dma_desc_set_addr
|--&gt;aicmac_dma_desc_prepare_tx_desc
|--&gt;skb_tx_timestamp
|--&gt;netdev_tx_sent_queue
|--&gt;aicmac_dma_reg_enable_transmission
|--&gt;aicmac_tx_timer_arm</code></pre></div><div class="- topic/p p" data-ofbid="d189042e63__20250123155220"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="mac_key_procedure__image_ecn_gbs_21c" src="../../../images/mac/mac-xmit.jpg" alt="mac-xmit"/></div><br/></div></li>
<li class="- topic/li li" data-ofbid="d189042e70__20250123155220">数据接收流程<div class="- topic/p p" data-ofbid="d189042e72__20250123155220">有任何数据到达，MAC 将产生中断，则函数 aicmac_interrupt
被执行<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="mac_key_procedure__codeblock_ihl_3cs_21c" data-ofbid="mac_key_procedure__codeblock_ihl_3cs_21c"><code>aicmac_interrupt
|--&gt;aicmac_napi_check
|--&gt;invoke aicmac_napi_poll_rx
|--&gt;aicmac_rx
|--&gt;netif_msg_rx_status
|--&gt;aicmac_dma_desc_get_rx_status
|--&gt;dma_sync_single_for_cpu
|--&gt;skb_copy_to_linear_data
|--&gt;skb_put
|--&gt;page_pool_recycle_direct
|--&gt;skb_add_rx_frag
|--&gt;page_pool_release_page
|--&gt;aicmac_<span class="hl-number">1588</span>_get_rx_hwtstamp
|--&gt;skb_set_hash
|--&gt;skb_record_rx_queue
|--&gt;napi_gro_receive
|--&gt;aicmac_rx_refill
|--&gt;aicmac_dma_reg_enable_irq
|--&gt;aicmac_dma_set_operation_mode</code></pre></div><div class="- topic/p p" data-ofbid="d189042e76__20250123155220"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="mac_key_procedure__image_hcn_gbs_21c" src="../../../images/mac/mac-receive.jpg" alt="mac-receive"/></div><br/></div></li>
<li class="- topic/li li" data-ofbid="d189042e83__20250123155220">DMA 初始化流程<div class="- topic/p p" data-ofbid="d189042e85__20250123155220">DMA 模块将在设备 Open 的时候初始化 ..
code-block:<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="mac_key_procedure__codeblock_s4f_jcs_21c" data-ofbid="mac_key_procedure__codeblock_s4f_jcs_21c"><code>aicmac_dma_init_desc_rings
|--&gt;aicmac_dma_init_rx_desc_rings
|--&gt;aicmac_dma_clear_rx_descriptors
|--&gt;aicmac_dma_desc_init_rx_desc
|--&gt;aicmac_dma_init_rx_buffers
|--&gt;aicmac_dma_chain_init(RX,TX)
|--&gt;aicmac_dmac_init_tx_desc_rings
|--&gt;aicmac_dma_desc_clear
|--&gt;netdev_tx_reset_queue
|--&gt;aicmac_dma_clear_descriptors
|--&gt;aicmac_dma_clear_rx_descriptors
|--&gt;aicmac_dma_desc_init_rx_desc
|--&gt;aicmac_dma_clear_tx_descriptors
|--&gt;aicmac_dma_desc_init_tx_desc
|--&gt;aicmac_dma_display_rings</code></pre></div><div class="- topic/p p" data-ofbid="d189042e89__20250123155220"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="mac_key_procedure__image_kcn_gbs_21c" src="../../../images/mac/mac-dma.jpg" alt="mac-dma"/></div><br/></div>
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</div>
</footer>
<button id="go2top" class="d-print-none" title="返回顶部">
<span class="oxy-icon oxy-icon-up"></span>
</button>
<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>
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