sdma_v2_4_start(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v2_4_start — NAME ✨

okay so bestie, welcome to sdma_v2_4_start, which is literally the function that does setup and start the async dma engines. that's it, that's the whole vibe. say it with me: setup. and. start. the. async. dma. engines. 🎀

(also hi, this is a page from the Kernel API Manual, so you know it's legit kernel business, not me just making stuff up 💜)

🦋 SYNOPSIS 🦋

int sdma_v2_4_start (struct amdgpu_device *adev );

no cap, that's the whole signature. one function, one argument, so clean, so iconic. ✨

🌸 ARGUMENTS 🌸

  • adev — a pointer to an amdgpu_device. that's the one (1) thing you gotta hand it. give it the device, bestie. 🫶

💖 DESCRIPTION 💖

so here's the tea: sdma_v2_4_start sets up the DMA engines and enables them (VI). that's the job. that's the mission. 🔥

it returns 0 for success, and error for failure — so like, if you get a zero back you're slaying, and if you get an error back... not slaying, but now you know. 😭

lowkey important: 0 = success, error = failure. don't mix those up, i'm begging. 🙈

👑 SEE ALSO 👑

the kernel file lives at ./drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c — go read it, iykyk. 💅

and here's the whole friend group, all the related manpages, every single one, no skips:

like, that's the entire crew, main character energy all around. 🌈

and that's the page, bestie!! 🧚 this lil' diva lives out of ./drivers/gpu/drm/amd/amdgpu, it's part of the Kernel API Manual, and the date on the tin says October 2026 — so yes, we're reading docs from the future, and that's iconic. mwah, bye!! 💋💖⭐

📦 where this page comes from