G_000004_MC_FB_START 166 drivers/gpu/drm/radeon/r520d.h #define G_000004_MC_FB_START(x) (((x) >> 0) & 0xFFFF) G_000004_MC_FB_START 510 drivers/gpu/drm/radeon/rs600d.h #define G_000004_MC_FB_START(x) (((x) >> 0) & 0xFFFF)