459 	unsigned int nslots, stride, index, wrap;  in swiotlb_tbl_map_single()  local
512 	index = ALIGN(io_tlb_index, stride);  in swiotlb_tbl_map_single()
513 	if (index >= io_tlb_nslabs)  in swiotlb_tbl_map_single()
514 		index = 0;  in swiotlb_tbl_map_single()
515 	wrap = index;  in swiotlb_tbl_map_single()
518 		while (iommu_is_span_boundary(index, nslots, offset_slots,  in swiotlb_tbl_map_single()
520 			index += stride;  in swiotlb_tbl_map_single()
521 			if (index >= io_tlb_nslabs)  in swiotlb_tbl_map_single()
522 				index = 0;  in swiotlb_tbl_map_single()
523 			if (index == wrap)  in swiotlb_tbl_map_single()
532 		if (io_tlb_list[index] >= nslots) {  in swiotlb_tbl_map_single()
535 			for (i = index; i < (int) (index + nslots); i++)  in swiotlb_tbl_map_single()
537 			for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE - 1) && io_tlb_list[i]; i--)  in swiotlb_tbl_map_single()
539 			tlb_addr = io_tlb_start + (index << IO_TLB_SHIFT);  in swiotlb_tbl_map_single()
545 			io_tlb_index = ((index + nslots) < io_tlb_nslabs  in swiotlb_tbl_map_single()
546 					? (index + nslots) : 0);  in swiotlb_tbl_map_single()
550 		index += stride;  in swiotlb_tbl_map_single()
551 		if (index >= io_tlb_nslabs)  in swiotlb_tbl_map_single()
552 			index = 0;  in swiotlb_tbl_map_single()
553 	} while (index != wrap);  in swiotlb_tbl_map_single()
573 		io_tlb_orig_addr[index+i] = orig_addr + (i << IO_TLB_SHIFT);  in swiotlb_tbl_map_single()
594 	int index = (tlb_addr - io_tlb_start) >> IO_TLB_SHIFT;  in swiotlb_tbl_unmap_single()  local
595 	phys_addr_t orig_addr = io_tlb_orig_addr[index];  in swiotlb_tbl_unmap_single()
613 		count = ((index + nslots) < ALIGN(index + 1, IO_TLB_SEGSIZE) ?  in swiotlb_tbl_unmap_single()
614 			 io_tlb_list[index + nslots] : 0);  in swiotlb_tbl_unmap_single()
619 		for (i = index + nslots - 1; i >= index; i--) {  in swiotlb_tbl_unmap_single()
627 		for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE -1) && io_tlb_list[i]; i--)  in swiotlb_tbl_unmap_single()
639 	int index = (tlb_addr - io_tlb_start) >> IO_TLB_SHIFT;  in swiotlb_tbl_sync_single()  local
640 	phys_addr_t orig_addr = io_tlb_orig_addr[index];  in swiotlb_tbl_sync_single()