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File Reference

Organization of driver source files in the MT7925 driver.

Directory Structure

drivers/net/wireless/mediatek/mt76/
├── mt76.h                 # Core data structures
├── mac80211.c             # mac80211 integration
├── dma.c, dma.h           # DMA management
├── mcu.c                  # MCU base
├── tx.c                   # TX path
├── agg-rx.c               # RX aggregation
├── mmio.c                 # MMIO operations
├── usb.c                  # USB support
├── sdio.c                 # SDIO support
├── pci.c                  # PCI support
│
├── mt76_connac_mcu.c/h    # Connac MCU protocol
├── mt76_connac_mac.c/h    # Connac MAC layer
├── mt76_connac3_mac.c/h   # Connac3 MAC (Wi-Fi 7)
│
├── mt792x_core.c          # MT792x core
├── mt792x_mac.c           # MT792x MAC
├── mt792x_dma.c           # MT792x DMA
├── mt792x.h               # MT792x structures
│
├── mt7925/                # MT7925 specific
│   ├── main.c             # mac80211 ops
│   ├── mac.c              # MAC processing
│   ├── mcu.c/h            # MCU commands
│   ├── pci.c              # PCI driver
│   ├── usb.c              # USB driver
│   └── init.c             # Initialization
│
└── mt7921/                # MT7921 specific
    └── ...

Core Files

mt76.h

Core data structures: mt76_dev, mt76_phy, mt76_wcid, mt76_queue

mac80211.c

mac80211 integration:

  • mt76_sta_add() / mt76_sta_remove() - Station management
  • mt76_set_channel() - Channel configuration
  • mt76_register_device() - Device registration

dma.c

DMA ring management:

  • mt76_dma_tx_queue_skb() - TX queue
  • mt76_dma_rx_poll() - RX polling
  • mt76_dma_init() - Initialization

mcu.c

MCU base:

  • mt76_mcu_send_msg() - Send MCU command
  • mt76_mcu_get_response() - Get response

tx.c

TX path:

  • mt76_tx() - Main TX entry
  • mt76_txq_schedule() - Queue scheduling

MT792x Shared Files

mt792x_core.c

Core functions shared by MT7921/MT7925:

  • mt792x_init_device() - Device initialization
  • mt792x_register_device() - Registration
  • mt792x_load_firmware() - Firmware loading
  • mt792x_irq_handler() - Interrupt handling

mt792x_mac.c

MAC layer:

  • mt792x_tx() - TX entry point
  • mt792x_mac_wtbl_update() - WTBL updates
  • mt792x_get_antenna() - Antenna configuration

mt792x.h

MT792x data structures:

  • struct mt792x_dev - Device state
  • struct mt792x_phy - PHY state
  • struct mt792x_vif - VIF state
  • struct mt792x_sta - Station state

MT7925 Specific Files

mt7925/main.c

mac80211 operations (mt7925_ops):

Function Callback
mt7925_start() .start
mt7925_stop() .stop
mt7925_config() .config
mt7925_bss_info_changed() .bss_info_changed
mt7925_change_vif_links() .change_vif_links

mt7925/mac.c

MAC processing:

  • mt7925_mac_sta_add() - Add station
  • mt7925_mac_sta_remove() - Remove station
  • mt7925_mac_link_sta_add() - Add MLO link
  • mt7925_mac_link_sta_remove() - Remove MLO link

mt7925/mcu.c

MCU commands:

  • mt7925_mcu_sta_add() - STA_REC_UPDATE
  • mt7925_mcu_add_bss_info() - BSS_INFO_UPDATE
  • mt7925_mcu_set_roc() - Remain-on-channel
  • mt7925_mcu_uni_bss_ps() - Power save

mt7925/pci.c

PCI driver:

  • mt7925_pci_probe() - Device probe
  • mt7925_pci_remove() - Device removal
  • mt7925_pci_suspend() - Suspend
  • mt7925_pci_resume() - Resume

mt7925/init.c

Initialization:

  • mt7925_init_hardware() - Hardware init
  • mt7925_init_thermal() - Thermal management
  • mt7925_init_debugfs() - Debugfs setup

Connac Library Files

mt76_connac_mcu.c

Shared MCU protocol:

  • TLV encoding/decoding
  • Common MCU commands
  • Response parsing

mt76_connac_mac.c

Shared MAC operations:

  • TX descriptor setup
  • RX descriptor parsing
  • Rate control helpers

mt76_connac3_mac.c

Wi-Fi 7 specific MAC:

  • EHT rate handling
  • MLO MAC helpers

Key Functions by Category

Station Management

Function File Description
mt7925_mac_sta_add() mt7925/mac.c Add station
mt7925_mac_sta_remove() mt7925/mac.c Remove station
mt76_sta_remove() mac80211.c Base removal

VIF Management

Function File Description
mt792x_add_interface() mt792x_core.c Add VIF
mt792x_remove_interface() mt792x_core.c Remove VIF
mt7925_change_vif_links() mt7925/main.c MLO links

MCU Operations

Function File Description
mt7925_mcu_sta_add() mt7925/mcu.c Send STA cmd
mt7925_mcu_add_bss_info() mt7925/mcu.c Send BSS cmd
mt76_mcu_send_msg() mcu.c Base send

Power Management

Function File Description
mt7925_pci_suspend() mt7925/pci.c Suspend
mt7925_pci_resume() mt7925/pci.c Resume
mt792x_pm_power_save_work() mt792x_core.c PS work