432 	unsigned int nslots, stride, index, wrap;  in swiotlb_tbl_map_single()  local
471 	index = ALIGN(io_tlb_index, stride);  in swiotlb_tbl_map_single()
472 	if (index >= io_tlb_nslabs)  in swiotlb_tbl_map_single()
473 		index = 0;  in swiotlb_tbl_map_single()
474 	wrap = index;  in swiotlb_tbl_map_single()
477 		while (iommu_is_span_boundary(index, nslots, offset_slots,  in swiotlb_tbl_map_single()
479 			index += stride;  in swiotlb_tbl_map_single()
480 			if (index >= io_tlb_nslabs)  in swiotlb_tbl_map_single()
481 				index = 0;  in swiotlb_tbl_map_single()
482 			if (index == wrap)  in swiotlb_tbl_map_single()
491 		if (io_tlb_list[index] >= nslots) {  in swiotlb_tbl_map_single()
494 			for (i = index; i < (int) (index + nslots); i++)  in swiotlb_tbl_map_single()
496 			for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE - 1) && io_tlb_list[i]; i--)  in swiotlb_tbl_map_single()
498 			tlb_addr = io_tlb_start + (index << IO_TLB_SHIFT);  in swiotlb_tbl_map_single()
504 			io_tlb_index = ((index + nslots) < io_tlb_nslabs  in swiotlb_tbl_map_single()
505 					? (index + nslots) : 0);  in swiotlb_tbl_map_single()
509 		index += stride;  in swiotlb_tbl_map_single()
510 		if (index >= io_tlb_nslabs)  in swiotlb_tbl_map_single()
511 			index = 0;  in swiotlb_tbl_map_single()
512 	} while (index != wrap);  in swiotlb_tbl_map_single()
528 		io_tlb_orig_addr[index+i] = orig_addr + (i << IO_TLB_SHIFT);  in swiotlb_tbl_map_single()
557 	int index = (tlb_addr - io_tlb_start) >> IO_TLB_SHIFT;  in swiotlb_tbl_unmap_single()  local
558 	phys_addr_t orig_addr = io_tlb_orig_addr[index];  in swiotlb_tbl_unmap_single()
575 		count = ((index + nslots) < ALIGN(index + 1, IO_TLB_SEGSIZE) ?  in swiotlb_tbl_unmap_single()
576 			 io_tlb_list[index + nslots] : 0);  in swiotlb_tbl_unmap_single()
581 		for (i = index + nslots - 1; i >= index; i--) {  in swiotlb_tbl_unmap_single()
589 		for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE -1) && io_tlb_list[i]; i--)  in swiotlb_tbl_unmap_single()
600 	int index = (tlb_addr - io_tlb_start) >> IO_TLB_SHIFT;  in swiotlb_tbl_sync_single()  local
601 	phys_addr_t orig_addr = io_tlb_orig_addr[index];  in swiotlb_tbl_sync_single()