e1000_check...link_ich8lan(9)

💖 NAME 💖

Okay so bestie, this is e1000_check_for_copper_link_ich8lan(9) from the Kernel API Manual — and the name literally tells you what it does: it's the copper-link check for the ich8lan crew. No cap.

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🦋 SYNOPSIS 🦋

s32 e1000_check_for_copper_link_ich8lan (struct e1000_hw *hw );

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✨ ARGUMENTS ✨

• hw — pointer to the HW structure. That's it, that's the whole argument list. She's lowkey minimal.

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🌸 DESCRIPTION 🌸

So here's the vibe: this function checks whether the link status of the hardware has changed 👀. Like, is the link doing something new or is it just sitting there?

If a change in link status has been detected, then it reads the PHY registers to get the current speed/duplex — but only if link exists, periodt.

That's the whole plot. No extra side quests. 💅

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👑 SEE ALSO 👑

Bestie, the friend group is huge. The kernel file is ./drivers/net/ethernet/intel/e1000e/ich8lan.c, and here's literally every single function in the squad — no skipping, no cutting:

e1000_phy_is_accessible_pchlan(9), e1000_toggle_lanphypc_pch_lpt(9),
e1000_reconfigure_k1_params(9), e1000_init_phy_workarounds_pchlan(9),
e1000_init_phy_params_pchlan(9), e1000_init_phy_params_ich8lan(9),
e1000_init_nvm_params_ich8lan(9), e1000_init_mac_params_ich8lan(9),
__e1000_access_emi_reg_locked(9), e1000_read_emi_reg_locked(9),
e1000_write_emi_reg_locked(9), e1000_set_eee_pchlan(9),
e1000_k1_workaround_lpt_lp(9), e1000_platform_pm_pch_lpt(9),
e1000e_force_smbus(9), e1000_enable_ulp_lpt_lp(9),
e1000_disable_ulp_lpt_lp(9), e1000_acquire_nvm_ich8lan(9),
e1000_release_nvm_ich8lan(9), e1000_acquire_swflag_ich8lan(9),
e1000_release_swflag_ich8lan(9), e1000_check_mng_mode_ich8lan(9),
e1000_check_mng_mode_pchlan(9), e1000_rar_set_pch2lan(9),
e1000_rar_get_count_pch_lpt(9), e1000_rar_set_pch_lpt(9),
e1000_check_reset_block_ich8lan(9), e1000_write_smbus_addr(9),
e1000_sw_lcd_config_ich8lan(9), e1000_k1_gig_workaround_hv(9),
e1000_configure_k1_ich8lan(9), e1000_oem_bits_config_ich8lan(9),
e1000_set_mdio_slow_mode_hv(9), e1000_hv_phy_workarounds_ich8lan(9),
e1000_copy_rx_addrs_to_phy_ich8lan(9),
e1000_lv_jumbo_workaround_ich8lan(9),
e1000_lv_phy_workarounds_ich8lan(9), e1000_k1_workaround_lv(9),
e1000_gate_hw_phy_config_ich8lan(9), e1000_lan_init_done_ich8lan(9),
e1000_post_phy_reset_ich8lan(9), e1000_phy_hw_reset_ich8lan(9),
e1000_set_lplu_state_pchlan(9), e1000_set_d0_lplu_state_ich8lan(9),
e1000_set_d3_lplu_state_ich8lan(9),
e1000_valid_nvm_bank_detect_ich8lan(9), e1000_read_nvm_spt(9),
e1000_read_nvm_ich8lan(9), e1000_flash_cycle_init_ich8lan(9),
e1000_flash_cycle_ich8lan(9), e1000_read_flash_dword_ich8lan(9),
e1000_read_flash_word_ich8lan(9), e1000_read_flash_byte_ich8lan(9),
e1000_read_flash_data_ich8lan(9), e1000_read_flash_data32_ich8lan(9),
e1000_write_nvm_ich8lan(9), e1000_update_nvm_checksum_spt(9),
e1000_update_nvm_checksum_ich8lan(9),
e1000_validate_nvm_checksum_ich8lan(9),
e1000e_write_protect_nvm_ich8lan(9), e1000_write_flash_data_ich8lan(9),
e1000_write_flash_data32_ich8lan(9), e1000_write_flash_byte_ich8lan(9),
e1000_retry_write_flash_dword_ich8lan(9),
e1000_retry_write_flash_byte_ich8lan(9),
e1000_erase_flash_bank_ich8lan(9), e1000_valid_led_default_ich8lan(9),
e1000_id_led_init_pchlan(9), e1000_get_bus_info_ich8lan(9),
e1000_reset_hw_ich8lan(9), e1000_init_hw_ich8lan(9),
e1000_initialize_hw_bits_ich8lan(9), e1000_setup_link_ich8lan(9),
e1000_setup_copper_link_ich8lan(9), e1000_setup_copper_link_pch_lpt(9),
e1000_get_link_up_info_ich8lan(9),
e1000_kmrn_lock_loss_workaround_ich8lan(9),
e1000e_set_kmrn_lock_loss_workaround_ich8lan(9),
e1000e_igp3_phy_powerdown_workaround_ich8lan(9),
e1000e_gig_downshift_workaround_ich8lan(9),
e1000_suspend_workarounds_ich8lan(9),
e1000_resume_workarounds_pchlan(9), e1000_cleanup_led_ich8lan(9),
e1000_led_on_ich8lan(9), e1000_led_off_ich8lan(9),
e1000_setup_led_pchlan(9), e1000_cleanup_led_pchlan(9),
e1000_led_on_pchlan(9), e1000_led_off_pchlan(9),
e1000_get_cfg_done_ich8lan(9), e1000_power_down_phy_copper_ich8lan(9),
e1000_clear_hw_cntrs_ich8lan(9)

Like I said: whole squad. 🫶

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And that's the page, bestie 💅 — it's from the Kernel API Manual, dated October 2026, with the source footer showing ./drivers/net/ethernet/intel/e.... Slay. 🎀