VGT_ES_PER_GS    2331 drivers/gpu/drm/radeon/r600.c 	WREG32(VGT_ES_PER_GS, 128);
VGT_ES_PER_GS    1566 drivers/gpu/drm/radeon/rv770.c 	WREG32(VGT_ES_PER_GS, 128);