G_00015C_MC_FB_TOP   37 drivers/gpu/drm/radeon/rs100d.h #define   G_00015C_MC_FB_TOP(x)                        (((x) >> 16) & 0xFFFF)
G_00015C_MC_FB_TOP   44 drivers/gpu/drm/radeon/rs400d.h #define   G_00015C_MC_FB_TOP(x)                        (((x) >> 16) & 0xFFFF)