cik_mm_rdoorbell(9)

📦 version 7.3.1, in nixpkgs unstable

💅 cik_mm_rdoorbell 💅

okay so this is a page straight out of the Kernel API Manual, section 9 — the kernel-functions girlies. welcome to the function that literally just looks at a doorbell and tells you what number's on it. no cap. 🎀

✨ NAME ✨

cik_mm_rdoorbell — read a doorbell dword, bestie. that's it. that's the whole job. 🛎️

🌸 SYNOPSIS 🌸

u32 cik_mm_rdoorbell (struct radeon_device *rdev , u32 index );

🦋 ARGUMENTS 🦋

  • rdev — a radeon_device pointer, aka the whole vibe. it's the radeon device you're working with. 🫶
  • index — the doorbell index. which doorbell?? this one. 💅

🧚 DESCRIPTION 🧚

so what does it do?? it returns the value sitting in the doorbell aperture at the doorbell index you asked for. and like — CIK. specifically CIK. that's the whole thing, she's simple, she's elegant, she's iconic. ⭐

ngl, she's a reader, not a writer. if you wanted to write one, you're on the wrong page, bestie — go find cik_mm_wdoorbell(9). 🙈

👑 SEE ALSO 👑

okay this list is long but we're not skipping a single one, because every single one of these is a main character in her own right. periodt. 💜

  • also peep the kernel file ./drivers/gpu/drm/radeon/cik.c — that's where the magic lives, iykyk 🔥

and now, the whole friend group, in order, fr fr:

that's the page, babe. go read some doorbells. 💖

also real quick, the receipts: this one comes to you from ./drivers/gpu/drm/radeon, dated October 2026, and it's page cik_mm_rdoorbell(9) of the Kernel API Manual. slay, stay hydrated, and don't forget to close your file descriptors. 🍓✨

📦 where this page comes from