S_00015C_MC_FB_TOP   36 drivers/gpu/drm/radeon/rs100d.h #define   S_00015C_MC_FB_TOP(x)                        (((x) & 0xFFFF) << 16)
S_00015C_MC_FB_TOP   43 drivers/gpu/drm/radeon/rs400d.h #define   S_00015C_MC_FB_TOP(x)                        (((x) & 0xFFFF) << 16)