CB_DEBUG_BUS_17__BB_BUSY__SHIFT  807 drivers/gpu/drm/amd/include/asic_reg/gca/gfx_6_0_sh_mask.h #define CB_DEBUG_BUS_17__BB_BUSY__SHIFT 0x00000003
CB_DEBUG_BUS_17__BB_BUSY__SHIFT  970 drivers/gpu/drm/amd/include/asic_reg/gca/gfx_7_2_sh_mask.h #define CB_DEBUG_BUS_17__BB_BUSY__SHIFT 0x3