ixgbe_write_...byte_generic(9)

🎀 ixgbe_write_...byte_generic 🎀

okay so first things first, bestie: this page is from the Kernel API Manual, and it's all about ixgbe_write_i2c_byte_generic. yes the title up top has the ... in it, that's just how the manpage header do, it's giving "name too long for the corner" energy 💅

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✨ NAME ✨

ixgbe_write_i2c_byte_generic — writes an 8 bit word over I2C 🦋

like literally that's it, that's the whole vibe of this function.

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🌸 SYNOPSIS 🌸

int ixgbe_write_i2c_byte_generic (struct ixgbe_hw *hw , u8 byte_offset ,
u8 dev_addr , u8 data );

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💖 ARGUMENTS 💖

• hw — pointer to hardware structure. the main character of the whole driver ngl 🫶
• byte_offset — byte offset to write. yes babes, where you're writing ✨
• dev_addr — device address. who we're writing to 🎀
• data — value to write. the actual payload, the moment, the content 👑

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🔥 DESCRIPTION 🔥

okay so what this actually does: it performs a byte write operation to the SFP module's EEPROM over the I2C interface, at a specified device address 💫

that's the whole thing. one byte. write. eeprom. i2c. iconic, honestly — no cap.

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🦋 SEE ALSO 🦋

the source file lives here, go look, iykyk:

• ./drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c

and here's the full squad of related functions (yes all of them, i'm not skipping a single one, periodt 💅):

• 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_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_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)

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lowkey obsessed with how one (1) byte write has this entire extended friend group of PHY and I2C helpers 💀

okay so that's the page!! mwah 💋 and for the sign-off: the footer of this bad boy shows the source as ./drivers/net/ethernet/intel/i... (yep, truncated, that's literally what it says 🙈) with the date October 2026, and the title wrapped around ixgbe_write_...byte_generic(9) on the right side. slay, bye 🧚‍♀️⭐