cik_sdma_ring_get_wptr(9)

📦 version 7.3.1, in nixpkgs unstable

💫 cik_sdma_ring_get_wptr(9) 💫

Okay bestie, so this is a page from the Kernel API Manual — yes, the actual kernel, no cap — and it's about one tiny but iconic little function. Buckle up, it's gonna be quick but it's gonna slay. 🎀

✨ NAME ✨

cik_sdma_ring_get_wptr — the function that goes and gets the current write pointer. That's it. That's the whole vibe. 💅

🌸 SYNOPSIS 🌸

uint64_t cik_sdma_ring_get_wptr (struct amdgpu_ring *ring );

Like, it takes one thing and it hands you back a uint64_t. Simple. Elegant. Main character energy fr. 🦋

🫶 ARGUMENTS 🫶

  • ring — an amdgpu ring pointer. Yeah. That's the whole argument list. One (1) pointer, and she's an amdgpu ring, and you gotta give her to the function so it knows which ring we're talking about. 💖

🔥 DESCRIPTION 🔥

So the whole point of this function is literally in the name, but let's spell it out for the girlies in the back: it gets the current wptr — that's the write pointer — straight from the hardware (CIK+). Not from some cached software copy, not from a vibe check, from the actual hardware. Ngl that's kind of iconic of her. 👑

Lowkey important detail: the CIK+ bit is doing real work there — this is hardware-sourced, bestie. Don't forget it. 😭

⭐ SEE ALSO ⭐

Here's the whole friend group — the kernel file and every single sibling function, all present and accounted for, no gatekeeping:

Like, that's the entire squad. Go read all of them. Or don't. But they're there. 🧚

💜 SIGN-OFF 💜

This lil beauty lives in ./drivers/gpu/drm/amd/amdgpu — that's her address, memorize it — and this version is dated October 2026. Manual name? cik_sdma_ring_get_wptr(9), duh. Periodt. 💅💖🌈

📦 where this page comes from