RADEON_MM_APER   3254 drivers/gpu/drm/radeon/radeon_combios.c 		WREG32_IDX((addr) | RADEON_MM_APER, 0xdeadbeef);
RADEON_MM_APER   3256 drivers/gpu/drm/radeon/radeon_combios.c 		if (RREG32_IDX((addr) | RADEON_MM_APER) != 0xdeadbeef)