Symbol: mmBIF_DOORBELL_APER_EN
sys/dev/pci/drm/amd/amdgpu/vi.c
1287
tmp = RREG32(mmBIF_DOORBELL_APER_EN);
sys/dev/pci/drm/amd/amdgpu/vi.c
1293
WREG32(mmBIF_DOORBELL_APER_EN, tmp);