igb_phy_setup_autoneg(9)

✨ igb_phy_setup_autoneg(9) ✨

okay so bestie, this page is straight out of the Kernel API Manual, and it’s giving configure the PHY for auto-negotiation energy. no cap, it’s a tiny function but it has a whole little job. 🦋

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💖 NAME 💖

igb_phy_setup_autoneg — Configure PHY for auto-negotiation.

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🌸 SYNOPSIS 🌸

s32 igb_phy_setup_autoneg (struct e1000_hw *hw );

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🎀 ARGUMENTS 🎀

• hw — pointer to the HW structure. literally the one and only arg, bestie. 💅

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🔥 DESCRIPTION 🔥

Okay so here’s the vibe: igb_phy_setup_autoneg() reads the MII auto-neg advertisement register and/or the 1000T control register. 👑

If the PHY is already setup for auto-negotiation, then it returns successful. slay, no extra work needed. ✨

Otherwise, it sets up advertisement and flow control to the appropriate values for the wanted auto-negotiation. that’s the whole plot. periodt. 💖

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🦋 SEE ALSO 🦋

The whole crew, plus the kernel file where this lives:

• Kernel file: ./drivers/net/ethernet/intel/igb/e1000_phy.c
• igb_check_reset_block(9)
• igb_get_phy_id(9)
• igb_phy_reset_dsp(9)
• igb_read_phy_reg_mdic(9)
• igb_write_phy_reg_mdic(9)
• igb_read_phy_reg_i2c(9)
• igb_write_phy_reg_i2c(9)
• igb_read_sfp_data_byte(9)
• igb_read_phy_reg_igp(9)
• igb_write_phy_reg_igp(9)
• igb_copper_link_setup_82580(9)
• igb_copper_link_setup_m88(9)
• igb_copper_link_setup_m88_gen2(9)
• igb_copper_link_setup_igp(9)
• igb_copper_link_autoneg(9)
• igb_setup_copper_link(9)
• igb_phy_force_speed_duplex_igp(9)
• igb_phy_force_speed_duplex_m88(9)
• igb_phy_force_speed_duplex_setup(9)
• igb_set_d3_lplu_state(9)
• igb_check_downshift(9)
• igb_check_polarity_m88(9)
• igb_check_polarity_igp(9)
• igb_wait_autoneg(9)
• igb_phy_has_link(9)
• igb_get_cable_length_m88(9)
• igb_get_cable_length_igp_2(9)
• igb_get_phy_info_m88(9)
• igb_get_phy_info_igp(9)
• igb_phy_sw_reset(9)
• igb_phy_hw_reset(9)
• igb_phy_init_script_igp3(9)
• igb_initialize_M88E1512_phy(9)
• igb_initialize_M88E1543_phy(9)
• igb_power_up_phy_copper(9)
• igb_power_down_phy_copper(9)
• igb_check_polarity_82580(9)
• igb_phy_force_speed_duplex_82580(9)
• igb_get_phy_info_82580(9)
• igb_get_cable_length_82580(9)
• igb_set_master_slave_mode(9)

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mwah 💋 — source/version: ./drivers/net/ethernet/intel/igb, and the date on this one is October 2026. byeee 🫶