SMX_SAR_CTL0     3550 drivers/gpu/drm/radeon/evergreen.c 		WREG32(SMX_SAR_CTL0, 0x00010000);
SMX_SAR_CTL0     1425 drivers/gpu/drm/radeon/rv770.c 		WREG32(SMX_SAR_CTL0, 0x00003f3f);