ih_v6_0_get_wptr(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ih_v6_0_get_wptr(9) — like, the Kernel API Manual bestie ✨

okay so picture this: you're deep in the ih_v6_0 corner of the kernel, and you need the IH ring buffer's wptr. that's it. that's the whole vibe of this page, and honestly? iconic. this is from the Kernel API Manual, and yes we're reading it together, hand in hand 🫶

✨ NAME ✨

ih_v6_0_get_wptr — get the IH ring buffer wptr 💫

like literally just. get the wptr. no cap.

🎀 SYNOPSIS 🎀

u32 ih_v6_0_get_wptr (struct amdgpu_device *adev , struct amdgpu_ih_ring
*ih );

she takes two pointers and hands you back a u32. short, sweet, main character energy 👑

🌸 ARGUMENTS 🌸

  • adev — an amdgpu_device pointer. your device bestie 🖥️
  • ih — an amdgpu_ih_ring pointer. the ring itself, the whole point of the function tbh 🌀

🦋 DESCRIPTION 🦋

okay so what she actually does: she gets the IH ring buffer wptr from either the register or the writeback memory buffer — whichever one it's coming from, she's got it covered 💁‍♀️

and then — and this is the part where she's lowkey doing the most — she also checks for ring buffer overflow and deals with it. like, she's not just grabbing a number and running, she's doing a whole vibe check on your ring buffer. responsible queen behavior 👑

and the return value? it's the value of the wptr. that's it. that's the return. 🌟

🔥 SEE ALSO 🔥

the kernel file lives at ./drivers/gpu/drm/amd/amdgpu/ih_v6_0.c — that's the source of truth, go read her fr fr 📖

and here's the whole friend group, all in (9) flavor:

ngl bestie, if you're touching wptr you're probably also touching rptr — go say hi to ih_v6_0_set_rptr(9) while you're here 💜

k bye ily, this page was brought to you by ./drivers/gpu/drm/amd/amdgpu and it's dated October 2026 — so like, future coded but somehow still serving 🎀✨ see you in the next (9) page, mwah 💋🦋

📦 where this page comes from