__e1000_write_kmrn_reg(9)

📦 version 7.3.1, in nixpkgs unstable

💅 __e1000_write_kmrn_reg — Write kumeran register ✨

okay bestie, so this page is from the Kernel API Manual, section 9 (that's the kernel devs' little corner of the man universe 🫶). Pull up a chair, we're writing to a PHY register through the kumeran interface today, and honestly? it's giving tiny-but-important. 💖

🌸 NAME 🌸

__e1000_write_kmrn_reg — write a kumeran register, that's the whole vibe ✨

🎀 SYNOPSIS 🎀

s32 __e1000_write_kmrn_reg (struct e1000_hw *hw , u32 offset , u16 data
, bool locked );

returns an s32 (yes, the status int, she's back 😭), takes the HW structure pointer, the offset, the data, and a locked bool.

🦋 ARGUMENTS 🦋

  • hw — pointer to the HW structure 👑 like, the whole hardware state, she's the main character here
  • offset — the register offset you're writing to, i.e. where in register-land we're landing
  • data — the actual data to write at that register offset, the payload, the moment 💅
  • locked — a bool telling you whether the semaphore has already been acquired or not 🔒 (this matters, keep reading)

💜 DESCRIPTION 💜

So the way this works, bestie: it acquires the semaphore if necessary — but only if necessary, which is literally what locked is about 🫶 — then it writes data to the PHY register at offset using the kumeran interface ✨. And before it exits, it releases any semaphores it acquired. Clean. Tidy. No leaked locks. Periodt. 💅

ngl the if necessary + release any acquired combo is the whole plot: if locked says someone already grabbed it, she doesn't double-grab, and she only lets go of what she took. Respect the lock etiquette fr fr 🎀

🔥 SEE ALSO 🔥

Kernel file: ./drivers/net/ethernet/intel/e1000e/phy.c — that's where the lore lives, iykyk 📁

And okay here's the friend group, the whole PHY register squad, no cap, all of them 💖:

and that's the page, bestie! 🌈💖 quick sign-off realness: this icon was born from ./drivers/net/ethernet/intel/e... and the page itself is dated October 2026, living under the same __e1000_write_kmrn_reg(9) name she started with 🎀 go write some kumeran registers, ily 🫶✨

📦 where this page comes from