sdma_v4_0_gfx_enable(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v4_0_gfx_enable(9) — a Kernel API Manual moment

okay so bestie, welcome to the sdma_v4_0_gfx_enable(9) page, straight out of the Kernel API Manual ✨ this one's short and sweet, no cap — but it's lowkey important, so let's get into it 🫶

✨ NAME ✨

sdma_v4_0_gfx_enable — the function that enables the gfx async dma engines 🔥 that's the whole vibe, that's the whole job 💅

🌸 SYNOPSIS 🌸

void sdma_v4_0_gfx_enable (struct amdgpu_device *adev , bool enable );

it returns void, so like… don't go looking for a return value, she gives you nothing back and she's iconic for it 👑

🎀 ARGUMENTS 🎀

  • adev — an amdgpu_device pointer 💖 literally just a pointer to the amdgpu device, bestie, nothing mysterious
  • enable — a bool that says whether to enable SDMA RB/IB control over the gfx async dma ring buffers (VEGA10) 🌈 yep, RB/IB control, the ring buffers, all of it — and that (VEGA10) is doing important work there, don't skip it 🙈

🦋 SEE ALSO 🦋

the kernel file lives right here, no gatekeeping:

./drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

and here's the whole friend group, the entire sdma_v4_0 extended universe, iykyk 💜

like, that's the whole roster and every single one of them got an invite 🎀

k bye bestie, this page came from ./drivers/gpu/drm/amd/amdgpu and it's dated October 2026 — go enable those engines, slay, and drink some water 💖✨🌸

📦 where this page comes from