amdgpu_mm_wdoorbell(9)

💖 NAME 💖

okay so bestie, this is amdgpu_mm_wdoorbell from the Kernel API Manual, and it is literally here to write a doorbell dword. 🛎️✨

✨ SYNOPSIS ✨

void amdgpu_mm_wdoorbell (struct amdgpu_device *adev , u32 index , u32 v
       );

🎀 ARGUMENTS 🎀

• adev — an amdgpu_device pointer. iykyk, it's the GPU's whole situation.
• index — the doorbell index. 🔔
• v — the value to write. periodt.

🦋 DESCRIPTION 🦋

okay so the whole plot is extremely simple: it writes v to the doorbell aperture at the requested doorbell index (CIK). that's it, that's the vibe. no cap. 💅

🌈 SEE ALSO 🌈

• Kernel file: ./drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c
• amdgpu_mm_rdoorbell(9)
• amdgpu_mm_rdoorbell64(9)
• amdgpu_mm_wdoorbell64(9)
• amdgpu_doorbell_index_on_bar(9)
• amdgpu_doorbell_create_kernel_doorbells(9)
• amdgpu_doorbell_init(9)
• amdgpu_doorbell_fini(9)

byeee bestie 🫶 this page came from source/version ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and it's amdgpu_mm_wdoorbell(9) all the way down. 💅✨