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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/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 style="color: gray;">
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Read time: 2 minute(s)
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</div><div class="- topic/body concept/conbody body conbody"><p class="- topic/shortdesc shortdesc"></p><div class="- topic/p p" data-ofbid="d169255e23__20250121171620">
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<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="d169255e26__20250121171620">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">|-->aicmac_platform_get_resources
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|-->kzalloc aicma_resources
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|-->platform_get_irq_byname
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|-->devm_platform_ioremap_resource
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|-->aicmac_platform_get_config
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|-->aicmac_platform_init_data
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|-->aicmac_phy_init_data
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|-->aicmac_mac_init_data
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|-->aicmac_mdio_init_data
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|-->aicmac_mda_init_data
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|-->aicmac_napi_init_data
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|-->aicmac_<span class="hl-number">1588</span>_init_data
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|-->aicmac_platform_get_mac_addr
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|-->aicmac_platform_init_ioirq
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|-->handle clk: mac clk, pclk
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|-->aicmac_<span class="hl-number">1588</span>_init_clk
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|-->devm_reset_control_get
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|-->aicmac_core_init
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|-->devm_alloc_etherdev_mqs
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|-->netdev_priv(ndev)
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|-->create_singlethread_workqueue
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|-->aicmac_service_task
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|-->reset_control_assert
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|-->aicmac_mac_init
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|-->aicmac_mac_ip_init
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|-->aicmac_mac_reg_core_init
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|-->aicmac_dma_init
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|-->dma_set_mask_and_coherent
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|-->aicmac_napi_init
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|-->netif_set_real_num_rx_queues
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|-->netif_set_real_num_tx_queues
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|-->aicmac_core_setup_napiop
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|-->netif_napi_add(rx)
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|-->netif_napi_add(tx)
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|-->mutex_init
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|-->aicmac_mdio_register
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|-->mdiobus_alloc
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|-->of_mdiobus_register
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|-->mdiobus_get_phy
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|-->aicmac_phy_init
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|-->phylink_create
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|-->aicmac_<span class="hl-number">1588</span>_init
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|-->ptp_clock_register
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|-->register_netdev</pre></li><li class="- topic/li li" data-ofbid="d169255e30__20250121171620">设备打开流程<div class="- topic/p p" data-ofbid="d169255e32__20250121171620">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 ..
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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">aicmac_open
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|-->aicmac_mac_reg_core_init
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|-->aicmac_mac_reg_init_basic_config(mac, dev);
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|-->aicmac_mac_reg_init_tx_func(mac, dev);
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|-->aicmac_mac_reg_init_rx_func(mac, dev);
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|-->aicmac_phy_connect
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|-->phylink_of_phy_connect
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|-->mdiobus_get_phy
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|-->phylink_connect_phy
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|-->aicmac_dma_ring_set_<span class="hl-number">16</span>kib_bfsize
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|-->aicmac_dma_ring_set_bfsize
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|-->aicmac_dma_alloc_dma_desc_resources
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|-->aicmac_dma_alloc_dma_rx_desc_resources
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|-->aicmac_dma_alloc_dma_rx_desc_resources
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|-->aicmac_dma_init_desc_rings
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|-->aicmac_dma_init_rx_desc_rings
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|-->aicmac_dma_init_tx_desc_rings
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|-->aicmac_dma_clear_rx_descriptors
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|-->aicmac_dma_clear_tx_descriptors
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|-->aicmac_hw_setup
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|-->aicmac_dma_init_engine
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|-->aicmac_mac_reg_reset
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|-->aicmac_mac_reg_set_umac_addr
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|-->aicmac_mac_reg_core_init
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|-->aicmac_mac_reg_rx_ipc_enable
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|-->aicmac_mac_reg_enable_mac
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|-->aicmac_dma_operation_mode
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|-->aicmac_dma_reg_operation_mode_rx
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|-->aicmac_dma_reg_operation_mode_tx
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|-->aicmac_dma_start_all_dma
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|-->aicmac_dma_reg_start_rx
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|-->aicmac_dma_reg_start_tx
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|-->aicmac_init_coalesce
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|-->aicmac_tx_timer
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|-->phylink_start
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|-->request_irq->aicmac_interrupt
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|-->aicmac_enable_all_queues
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|-->netif_tx_start_all_queues</pre></div><div class="- topic/p p" data-ofbid="d169255e36__20250121171620"><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="d169255e40__20250121171620">数据发送流程<div class="- topic/p p" data-ofbid="d169255e42__20250121171620">执行任何的发送操作(如 ping 命令)，aicmac_xmit 将被调用 ..
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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">aicmac_xmit
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|-->aicmac_tx_avail
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|-->aicmac_vlan_insert
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|-->aicmac_dma_ring_is_jumbo_frm
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|-->aicmac_dma_ring_jumbo_frm
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|-->aicmac_dma_desc_set_addr
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|-->aicmac_dma_desc_prepare_tx_desc
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|-->skb_tx_timestamp
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|-->netdev_tx_sent_queue
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|-->aicmac_dma_reg_enable_transmission
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|-->aicmac_tx_timer_arm</pre></div><div class="- topic/p p" data-ofbid="d169255e46__20250121171620"><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="d169255e50__20250121171620">数据接收流程<div class="- topic/p p" data-ofbid="d169255e52__20250121171620">有任何数据到达，MAC 将产生中断，则函数 aicmac_interrupt
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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">aicmac_interrupt
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|-->aicmac_napi_check
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|-->invoke aicmac_napi_poll_rx
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|-->aicmac_rx
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|-->netif_msg_rx_status
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|-->aicmac_dma_desc_get_rx_status
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|-->dma_sync_single_for_cpu
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|-->skb_copy_to_linear_data
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|-->skb_put
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|-->page_pool_recycle_direct
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|-->skb_add_rx_frag
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|-->page_pool_release_page
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|-->aicmac_<span class="hl-number">1588</span>_get_rx_hwtstamp
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|-->skb_set_hash
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|-->skb_record_rx_queue
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|-->napi_gro_receive
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|-->aicmac_rx_refill
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|-->aicmac_dma_reg_enable_irq
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|-->aicmac_dma_set_operation_mode</pre></div><div class="- topic/p p" data-ofbid="d169255e56__20250121171620"><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="d169255e60__20250121171620">DMA 初始化流程<div class="- topic/p p" data-ofbid="d169255e62__20250121171620">DMA 模块将在设备 Open 的时候初始化 ..
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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">aicmac_dma_init_desc_rings
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|-->aicmac_dma_init_rx_desc_rings
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|-->aicmac_dma_clear_rx_descriptors
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|-->aicmac_dma_desc_init_rx_desc
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|-->aicmac_dma_init_rx_buffers
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|-->aicmac_dma_chain_init(RX,TX)
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|-->aicmac_dmac_init_tx_desc_rings
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|-->aicmac_dma_desc_clear
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|-->netdev_tx_reset_queue
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|-->aicmac_dma_clear_descriptors
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|-->aicmac_dma_clear_rx_descriptors
|
||
|-->aicmac_dma_desc_init_rx_desc
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||
|-->aicmac_dma_clear_tx_descriptors
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|-->aicmac_dma_desc_init_tx_desc
|
||
|-->aicmac_dma_display_rings</pre></div><div class="- topic/p p" data-ofbid="d169255e66__20250121171620"><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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||
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