igb_phy_hw_reset(9)

📦 version 7.3.1, in nixpkgs unstable

🦋 igb_phy_hw_reset(9) — like, the PHY hardware reset bestie 💅

okay so this is from the Kernel API Manual and it's literally the whole glow-up ritual for your PHY hardware reset ✨ no cap, it's giving "main character energy" in ./drivers/net/ethernet/intel/igb/e1000_phy.c 🎀

💖 NAME 💖

igb_phy_hw_reset — PHY hardware reset, the icon herself 👑

✨ SYNOPSIS ✨

s32 igb_phy_hw_reset (struct e1000_hw *hw );

🌸 ARGUMENTS 🌸

  • hw — pointer to the HW structure 🫶 that's it, that's the whole vibe, just hand her the hardware struct and let her cook

🔥 DESCRIPTION 🔥

So here's the tea, bestie 🍓 — first thing she does is verify the reset block is not blocking us from resetting 🙈 like, vibe check on the reset block first, we are NOT walking into a blocked situation, no ma'am.

Then she acquires the semaphore (if necessary 💀 yes, if necessary, it's conditional, read it and weep) and then she reads, sets, and writes the device control reset bit in the PHY. All three. Read it, set it, write it. Periodt 💅

After that she waits the appropriate delay time for the device to reset ⏳ (the appropriate delay, not just any delay, she's precise like that) and then releases the semaphore (again — if necessary 🙈 conditional queen).

So the whole flow lowkey is:

  1. Check the reset block isn't blocking the reset 🚧
  2. Grab the semaphore (if necessary) 🔐
  3. Read / set / write the device control reset bit in the PHY 🎛️
  4. Wait the appropriate delay for the device to reset ⏰
  5. Release the semaphore (if necessary) 🔓

and that's the whole function, slay 💅✨

👑 SEE ALSO 👑

Kernel file: ./drivers/net/ethernet/intel/igb/e1000_phy.c 📁 (the source of truth, the mothership)

And the whole friend group, fr fr — every single one of these icons 🫶:

okay that's the whole page bestie, go reset a PHY and be iconic about it 💜🧚⭐

this absolute baddie of a man page lives in the source tree at ./drivers/net/ethernet/intel/igb and it's dated October 2026 🎀💖 mwah, bye 🦋

📦 where this page comes from