ixgbe_set_mux(9)

🌸 okay so welcome to the Kernel API Manual page for ixgbe_set_mux(9) 🌸

bestie. sit down. we're talking about one (1) tiny function that flips a mux, and honestly? it's giving humble-but-iconic. no preamble needed, let's go 💅

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✨ NAME ✨

ixgbe_set_mux — literally just setting the mux for port 1 access with CS4227. that's the whole personality. that's the gig. 🎀

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✨ SYNOPSIS ✨

void ixgbe_set_mux (struct ixgbe_hw *hw , u8 state );

not a return value in sight. it's void, it commits to the bit, and it does not report back. main character energy tbh 🫶

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✨ ARGUMENTS ✨

• hw — pointer to the hardware structure. yes queen, hand over the whole hardware struct, we're going in. 🔥
• state — set the mux if 1, clear it if 0. that's it. binary decision, zero chill, no in-between. like a vibe check but for a mux. ✨

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✨ SEE ALSO ✨

okay so this is the part where the page just. keeps. going. 😭 and we are NOT skipping a single one of these, because every one of them is somebody's baby and they all live in the same file. here's the full bestie list, no cap:

the kernel file itself:

• Kernel file ./drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c

the CS4227 + parallel/PE + i2c crew:

• ixgbe_read_cs4227(9)
• ixgbe_write_cs4227(9)
• ixgbe_read_pe(9)
• ixgbe_write_pe(9)
• ixgbe_reset_cs4227(9)
• ixgbe_check_cs4227(9)
• ixgbe_read_i2c_combined_generic(9)
• ixgbe_read_i2c_combined_generic_unlocked(9)
• ixgbe_write_i2c_combined_generic(9)
• ixgbe_write_i2c_combined_generic_unlocked(9)

the firmware/phy girlies:

• ixgbe_fw_phy_activity(9)
• ixgbe_get_phy_id_fw(9)
• ixgbe_identify_phy_fw(9)
• ixgbe_shutdown_fw_phy(9)
• ixgbe_setup_fw_link(9)
• ixgbe_fc_autoneg_fw(9)

the iosf / token / bus-info era:

• ixgbe_iosf_wait(9)
• ixgbe_get_phy_token(9)
• ixgbe_put_phy_token(9)
• ixgbe_write_iosf_sb_reg_x550a(9)
• ixgbe_read_iosf_sb_reg_x550a(9)
• ixgbe_get_bus_info_X550em(9)
• ixgbe_fw_recovery_mode_X550(9)

the link-up / sfp / sgmii section (there are SO many and they all slay):

• ixgbe_setup_ixfi_x550em_x(9)
• ixgbe_restart_an_internal_phy_x550em(9)
• ixgbe_supported_sfp_modules_X550em(9)
• ixgbe_setup_mac_link_sfp_x550em(9)
• ixgbe_setup_sfi_x550a(9)
• ixgbe_setup_mac_link_sfp_n(9)
• ixgbe_setup_mac_link_sfp_x550a(9)
• ixgbe_setup_mac_link_t_X550em(9)
• ixgbe_setup_sgmii(9)
• ixgbe_setup_sgmii_fw(9)
• ixgbe_fc_autoneg_sgmii_x550em_a(9)

the LASI extended squad:

• ixgbe_get_lasi_ext_t_x550em(9)
• ixgbe_enable_lasi_ext_t_x550em(9)
• ixgbe_handle_lasi_ext_t_x550em(9)

the KR speed / LED / driver-version moment:

• ixgbe_setup_kr_speed_x550em(9)
• ixgbe_setup_kr_x550em(9)
• ixgbe_led_on_t_x550em(9)
• ixgbe_led_off_t_x550em(9)
• ixgbe_set_fw_drv_ver_x550(9)

the flow-control (fc) besties — autoneg girlies rise:

• ixgbe_setup_fc_x550em(9)
• ixgbe_fc_autoneg_backplane_x550em_a(9)
• ixgbe_fc_autoneg_fiber_x550em_a(9)
• ixgbe_setup_fc_backplane_x550em_a(9)

the phy reset / overtemp / mdio speed corner:

• ixgbe_reset_phy_fw(9)
• ixgbe_check_overtemp_fw(9)
• ixgbe_read_mng_if_sel_x550em(9)
• ixgbe_set_mdio_speed(9)

the swfw sync lock girlies (both spellings, we respect both):

• ixgbe_acquire_swfw_sync_X550em(9)
• ixgbe_release_swfw_sync_X550em(9)
• ixgbe_acquire_swfw_sync_x550em_a(9)
• ixgbe_release_swfw_sync_x550em_a(9)

the phy register read/write duo:

• ixgbe_read_phy_reg_x550a(9)
• ixgbe_write_phy_reg_x550a(9)

and finally, the MDD crew, closing us out:

• ixgbe_enable_mdd_x550(9)
• ixgbe_disable_mdd_x550(9)
• ixgbe_restore_mdd_vf_x550(9)
• ixgbe_handle_mdd_x550(9)

like… sixty cross-references. sixty. and you know what? she earned every single one 👑💀

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🫶 tiny reminder bestie: this page is from <bold>./drivers/net/ethernet/intel/i...</bold> and it's dated October 2026. also it's still ixgbe_set_mux(9) at the bottom, because the page refuses to let you forget. 💖

okay that's the page, go set a mux, mwah 💋✨🌸