amdgpu_device_xcc_wreg(9)

📦 version 7.3.1, in nixpkgs unstable

💅 amdgpu_device_xcc_wreg — like, the kernel API manual, bestie

okay so picture this: it's a kernel API manual page, the star of the show is amdgpu_device_xcc_wreg(9), and she's here to write to a memory mapped IO or indirect register — but with a specific XCC, which is the whole lil twist 🎀

✨ NAME ✨

amdgpu_device_xcc_wreg — write to a memory mapped IO or indirect register with specific XCC 🦋

🌸 SYNOPSIS 🌸

void amdgpu_device_xcc_wreg (struct amdgpu_device *adev , uint32_t reg ,
uint32_t v , uint32_t acc_flags , uint32_t xcc_id );

no cap, that's the whole signature 💖

🫶 ARGUMENTS 🫶

  • adev — the amdgpu_device pointer, aka the main character herself 👑
  • reg — the register offset, and bestie it has to be dword aligned ⭐
  • v — the 32 bit value you're writing into that register, slay 💅
  • acc_flags — access flags, and these ones require special behavior, so, yk, pay attention 🙈
  • xcc_id — the xcc accelerated compute core id, iykyk 🌈

💜 DESCRIPTION 💜

Writes the value specified to the offset specified. periodt. ✨

Like, literally: you hand her a value, you hand her an offset, she writes the one to the other. that's the vibe check and she passes it every time 💀🔥

🧚 SEE ALSO 🧚

the kernel file:

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

and her whole friend group, fr fr:

ok that's the whole page!! go write some registers, but like, correctly 💖

and that's a wrap bestie 🎀 this one lives in ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and you can find her filed under amdgpu_device_xcc_wreg(9) — mwah, bye!! 💜🌸

📦 where this page comes from