ixgbe_mii_bus_read_c45(9)

💖 ixgbe_mii_bus_read_c45 — like, the clause 45 register reader bestie 💖

okay so this is a page from the Kernel API Manual, and it's about ixgbe_mii_bus_read_c45(9), which reads a clause 45 register 🎀 yes that's the whole vibe, but let's get into it properly.

✨ SYNOPSIS ✨

int ixgbe_mii_bus_read_c45 (struct mii_bus *bus , int devad , int addr ,
int regnum );

like. it returns an int, it takes four things, and it is literally the function's whole personality 💅

🫶 ARGUMENTS 🫶

• bus — this one's a pointer to the mii_bus structure, and that structure points to our driver private. so yeah, it's the "where do i even find myself" argument 🦋
• devad — the device address to read. that's the one you're reading from, obviously 🙈
• addr — the address. that's it. that's the argument. it's giving minimal effort but honestly same 😭
• regnum — the register number. the specific reg. the main character of the read 🎀

🌈 SEE ALSO 🌈

bestie there are SO many of these, buckle up, i'm listing every single one because none of them are getting left out 👑

• Kernel file ./drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
• ixgbe_out_i2c_byte_ack(9), ixgbe_in_i2c_byte_ack(9), ixgbe_ones_comp_byte_add(9), ixgbe_read_i2c_combined_generic_int(9), ixgbe_write_i2c_combined_generic_int(9), ixgbe_probe_phy(9), ixgbe_identify_phy_generic(9), ixgbe_check_reset_blocked(9), ixgbe_get_phy_id(9), ixgbe_get_phy_type_from_id(9), ixgbe_reset_phy_generic(9), ixgbe_read_phy_reg_mdi(9), ixgbe_read_phy_reg_generic(9), ixgbe_write_phy_reg_mdi(9), ixgbe_write_phy_reg_generic(9), ixgbe_msca_cmd(9)
• ixgbe_mii_bus_read_generic_c22(9), ixgbe_mii_bus_read_generic_c45(9), ixgbe_mii_bus_write_generic_c22(9), ixgbe_mii_bus_write_generic_c45(9), ixgbe_mii_bus_read_c22(9), ixgbe_mii_bus_write_c22(9), ixgbe_mii_bus_write_c45(9), ixgbe_x550em_a_mii_bus_read_c22(9), ixgbe_x550em_a_mii_bus_read_c45(9), ixgbe_x550em_a_mii_bus_write_c22(9), ixgbe_x550em_a_mii_bus_write_c45(9), ixgbe_get_first_secondary_devfn(9), ixgbe_x550em_a_has_mii(9), ixgbe_mii_bus_init(9)
• ixgbe_setup_phy_link_generic(9), ixgbe_setup_phy_link_speed_generic(9), ixgbe_get_copper_speeds_supported(9), ixgbe_get_copper_link_capabilities_generic(9), ixgbe_check_phy_link_tnx(9), ixgbe_setup_phy_link_tnx(9), ixgbe_reset_phy_nl(9)
• ixgbe_identify_module_generic(9), ixgbe_identify_sfp_module_generic(9), ixgbe_identify_qsfp_module_generic(9), ixgbe_get_sfp_init_sequence_offsets(9)
• ixgbe_read_i2c_eeprom_generic(9), ixgbe_read_i2c_sff8472_generic(9), ixgbe_write_i2c_eeprom_generic(9), ixgbe_is_sfp_probe(9), ixgbe_read_i2c_byte_generic_int(9), ixgbe_read_i2c_byte_generic(9), ixgbe_read_i2c_byte_generic_unlocked(9), ixgbe_write_i2c_byte_generic_int(9), ixgbe_write_i2c_byte_generic(9), ixgbe_write_i2c_byte_generic_unlocked(9)
• ixgbe_i2c_start(9), ixgbe_i2c_stop(9), ixgbe_clock_in_i2c_byte(9), ixgbe_clock_out_i2c_byte(9), ixgbe_get_i2c_ack(9), ixgbe_clock_in_i2c_bit(9), ixgbe_clock_out_i2c_bit(9), ixgbe_raise_i2c_clk(9), ixgbe_lower_i2c_clk(9), ixgbe_set_i2c_data(9), ixgbe_get_i2c_data(9), ixgbe_i2c_bus_clear(9)
• ixgbe_tn_check_overtemp(9)

ngl that's a lot of cross-references. iykyk 🌸

okay bestie, signing off 💜 this page is from the source ./drivers/net/ethernet/intel/i... (yeah, it's truncated in the footer, not me being lazy, that's just how it is 😭) and it's dated October 2026. slay. go read your clause 45 registers, you've got this 🎀✨