ixgbe_x550e...bus_read_c22(9)

💅 ixgbe_x550e...bus_read_c22(9) 💅

okay so bestie, this is a page from the Kernel API Manual and it’s giving “one very specific little helper in the ixgbe PHY world” ✨. The star of the show is ixgbe_x550em_a_mii_bus_read_c22, and its whole thing is reading a clause 22 register on x550em_a. slay.

🌸 NAME 🌸

ixgbe_x550em_a_mii_bus_read_c22 — Read a clause 22 register on x550em_a.

✨ SYNOPSIS ✨

int ixgbe_x550em_a_mii_bus_read_c22 (struct mii_bus *bus , int addr ,
       int regnum );

🎀 ARGUMENTS 🎀

• bus — pointer to mii_bus structure which points to our driver private.
• addr — address.
• regnum — register number.

not me staring at a three-argument function like it’s a whole personality, but okay 💀 the return type is int, periodt.

🌈 SEE ALSO 🌈

okay the cross-reference list is LONG and honestly iconic, so here is every single one, in order, no skips:

• 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_read_c45(9)
• ixgbe_mii_bus_write_c22(9)
• ixgbe_mii_bus_write_c45(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)

source/version ./drivers/net/ethernet/intel/i..., dated October 2026 — mwah, kisses to the kernel docs 💋🫶