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)