C_00015C_MC_FB_TOP   38 drivers/gpu/drm/radeon/rs100d.h #define   C_00015C_MC_FB_TOP                           0x0000FFFF
C_00015C_MC_FB_TOP   45 drivers/gpu/drm/radeon/rs400d.h #define   C_00015C_MC_FB_TOP                           0x0000FFFF