ixgbe_read_phy_reg_mdi(9)

✨ ixgbe_read_phy_reg_mdi(9) ✨

Okay so welcome to the Kernel API Manual, bestie 🫶 — today we're looking at ixgbe_read_phy_reg_mdi, which is literally just a function that reads a PHY register. That's it. That's the whole vibe. 💅

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🌸 NAME 🌸

ixgbe_read_phy_reg_mdi — read PHY register 👑

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🎀 SYNOPSIS 🎀

int ixgbe_read_phy_reg_mdi (struct ixgbe_hw *hw , u32 reg_addr , u32 device_type , u16 *phy_data );

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🦋 ARGUMENTS 🦋

• hw — pointer to hardware structure. it's giving "here's the hardware, go off" ✨
• reg_addr — 32 bit address of PHY register to read 🔍
• device_type — 5 bit device type. yes, five bits, tiny icon behavior 💅
• phy_data — Pointer to read data from PHY register. the data lands here 🍓

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💜 DESCRIPTION 💜

It reads a value from a specified PHY register — and the way it does it is without the SWFW lock. no cap, that's the whole description. 📖✨

Heads up bestie: no SWFW lock means no software/firmware locking around this read. that's the documented behavior, so keep that in mind before you go wild 🙈

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🔥 SEE ALSO 🔥

Kernel file ./drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c — that's where the whole friend group lives 🧚

• 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_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(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)

Like, that's the entire friend group and they ALL showed up to the function's birthday party 🎉👯‍♀️

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mwah 💋 this page came from ./drivers/net/ethernet/intel/i... and it's dated October 2026, so mark your calendars, bestie — see you then 🌈⭐