e1000_power...pper_ich8lan(9)
π e1000_power_down_phy_copper_ich8lan
okay so real talk, this page lives in the Kernel API Manual, section 9 β yes, that e1000_power...pper_ich8lan(9) header situation up top, that's her full government name π. And bestie, she is niche, but she's iconic and she does exactly one job flawlessly.
πΈ NAME πΈ
e1000_power_down_phy_copper_ich8lan β remove the link during PHY power down β¨
Basically: when the PHY is going night-night, the link does not get to hang around being cute. It's gone. Periodt. π
π SYNOPSIS π
void e1000_power_down_phy_copper_ich8lan (struct e1000_hw *hw );
No return value, no drama, just vibes and a void. π«Ά
π¦ ARGUMENTS π¦
hwβ pointer to the HW structure π»β¨ (that's the hardware struct, the main character of this whole function, lowkey)
π DESCRIPTION π
So here's the tea π: there are a few situations where the link needs to go bye-bye β
- when the PHY is being powered down to save power (energy conservation slay π₯),
- when the link needs to be turned off during a driver unload,
- or when wake on lan is not enabled.
In all those cases, this function removes the link. That's it, that's the whole gig. Not me describing a whole function in one sentence and it still eating π .
no cap, the source phrasing is "remove the link" β so the link is removed. Don't go reading extra behaviour into it, bestie, this is the entire documented deal π
β SEE ALSO β
The whole extended ich8lan / pchlan / lpt / spt / hv / lv family reunion showed up to this page and honestly? Every single one of them is on the guest list. Say hi to all of them π:
./drivers/net/ethernet/intel/e1000e/ich8lan.cβ the kernel file itself, the literal home address πe1000_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_check_for_copper_link_ich8lan(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_clear_hw_cntrs_ich8lan(9)
and that's the whole page, bestie β every flag-free, option-free, straight-to-the-point crumb of it π§π
π«Ά cute little sign-off: this one's sourced from./drivers/net/ethernet/intel/e...(yes, truncated exactly like that in the footer, she's mysterious like that π ) and dated October 2026. Manual name again, one last time for the road:e1000_power...pper_ich8lan(9). mwah πβ¨
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms