64 	struct radeon_fence_driver *drv = &rdev->fence_drv[ring];  in radeon_fence_write()  local
65 	if (likely(rdev->wb.enabled || !drv->scratch_reg)) {  in radeon_fence_write()
66 		if (drv->cpu_addr) {  in radeon_fence_write()
67 			*drv->cpu_addr = cpu_to_le32(seq);  in radeon_fence_write()
70 		WREG32(drv->scratch_reg, seq);  in radeon_fence_write()
85 	struct radeon_fence_driver *drv = &rdev->fence_drv[ring];  in radeon_fence_read()  local
88 	if (likely(rdev->wb.enabled || !drv->scratch_reg)) {  in radeon_fence_read()
89 		if (drv->cpu_addr) {  in radeon_fence_read()
90 			seq = le32_to_cpu(*drv->cpu_addr);  in radeon_fence_read()
92 			seq = lower_32_bits(atomic64_read(&drv->last_seq));  in radeon_fence_read()
95 		seq = RREG32(drv->scratch_reg);  in radeon_fence_read()