sdma_v5_0_g...ume_instance(9)

📦 version 7.3.1, in nixpkgs unstable

✨ NAME ✨

sdma_v5_0_gfx_resume_instance — bestie, this is the one that starts or restarts a certain sdma engine 💅 (yes, a certain one — you gotta tell it which)

So this is straight out of the Kernel API Manual, section 9, and it's giving "let me spin up your DMA" energy 🔥

🎀 SYNOPSIS 🎀

int sdma_v5_0_gfx_resume_instance (struct amdgpu_device *adev , int i ,
       bool restore );

okay so it hands you back an int, takes an amdgpu_device pointer, an instance number, and a bool — that's the whole vibe check 🫶

🌸 ARGUMENTS 🌸

  • adev — the amdgpu_device pointer, i.e. your main character struct, the whole device, no cap 💖
  • i — the instance, literally which one you're talking about 👑
  • restore — this one's the "are we restarting?" flag, and it's used to restore wptr when you restart 🔁

🦋 DESCRIPTION 🦋

So what it does: it sets up the gfx DMA ring buffers and enables them. That's the whole job, and it eats ✨

On restart, we will restore wptr and rptr — both of them, don't skip either 😤

Return 0 for success 💚 (that's the good ending, the slay ending, the one we want)

🧚 SEE ALSO 🧚

Kernel file ./drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c — that's where the magic lives, iykyk 📁

like, the entire friend group is here and they all ate 💅🌈

okay that's the whole page, mwah 💋 coming at you from ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and the section is 9 in case anyone asks — periodt 🎀⭐

📦 where this page comes from