amdgpu_device_rreg(9)

✨ NAME ✨

okay so amdgpu_device_rreg(9) — read a memory mapped IO or indirect register. This page is from the Kernel API Manual, and she is lowkey iconic: she reads a register and returns the value, no cap. 💅

🌸 SYNOPSIS 🌸

uint32_t amdgpu_device_rreg (struct amdgpu_device *adev , uint32_t reg ,
       uint32_t acc_flags );

🎀 ARGUMENTS 🎀

• adev — an amdgpu_device pointer, aka the struct pointer you're handing over. 🫶
• reg — the register offset, and it's dword aligned. Respect the alignment, bestie. ✨
• acc_flags — access flags which require special behavior. Yes, those flags. They need special behavior. periodt. 💅

💜 DESCRIPTION 💜

It returns the 32 bit value from the offset specified. That's the whole function, and she ate. 🔥

🦋 SEE ALSO 🦋

Kernel file: ./drivers/gpu/drm/amd/amdgpu/amdgpu_reg_access.c — go peek if you're nosy (affectionate). 👀

Also peep these sister pages, iykyk:

• amdgpu_mm_rreg8(9)
• amdgpu_device_xcc_rreg(9)
• amdgpu_mm_wreg8(9)
• amdgpu_device_wreg(9)
• amdgpu_mm_wreg_mmio_rlc(9)
• amdgpu_device_xcc_wreg(9)
• amdgpu_device_indirect_rreg(9)
• amdgpu_device_indirect_rreg64(9)
• amdgpu_device_indirect_wreg(9)
• amdgpu_device_indirect_wreg64(9)

Source/version vibe: ./drivers/gpu/drm/amd/amdgpu · date: October 2026 · page: amdgpu_device_rreg(9). mwah 💋