161 	if (!io_tlb_default_mem.nslabs)  in swiotlb_max_segment()
163 	return rounddown(io_tlb_default_mem.nslabs << IO_TLB_SHIFT, PAGE_SIZE);  in swiotlb_max_segment()
193 	if (!mem->nslabs) {  in swiotlb_print_info()
199 	       (mem->nslabs << IO_TLB_SHIFT) >> 20);  in swiotlb_print_info()
252 	if (!mem->nslabs || mem->late_alloc)  in swiotlb_update_mem_attributes()
255 	bytes = PAGE_ALIGN(mem->nslabs << IO_TLB_SHIFT);  in swiotlb_update_mem_attributes()
264 		unsigned long nslabs, unsigned int flags,  in swiotlb_init_io_tlb_mem()  argument
268 	unsigned long bytes = nslabs << IO_TLB_SHIFT, i;  in swiotlb_init_io_tlb_mem()
270 	mem->nslabs = nslabs;  in swiotlb_init_io_tlb_mem()
275 	mem->area_nslabs = nslabs / mem->nareas;  in swiotlb_init_io_tlb_mem()
285 	for (i = 0; i < mem->nslabs; i++) {  in swiotlb_init_io_tlb_mem()
308 		int (*remap)(void *tlb, unsigned long nslabs))  in swiotlb_init_remap()  argument
311 	unsigned long nslabs;  in swiotlb_init_remap()  local
328 	nslabs = default_nslabs;  in swiotlb_init_remap()
335 	bytes = PAGE_ALIGN(nslabs << IO_TLB_SHIFT);  in swiotlb_init_remap()
345 	if (remap && remap(tlb, nslabs) < 0) {  in swiotlb_init_remap()
348 		nslabs = ALIGN(nslabs >> 1, IO_TLB_SEGSIZE);  in swiotlb_init_remap()
349 		if (nslabs >= IO_TLB_MIN_SLABS)  in swiotlb_init_remap()
356 	alloc_size = PAGE_ALIGN(array_size(sizeof(*mem->slots), nslabs));  in swiotlb_init_remap()
371 	swiotlb_init_io_tlb_mem(mem, __pa(tlb), nslabs, flags, false,  in swiotlb_init_remap()
389 		int (*remap)(void *tlb, unsigned long nslabs))  in swiotlb_init_late()  argument
392 	unsigned long nslabs = ALIGN(size >> IO_TLB_SHIFT, IO_TLB_SEGSIZE);  in swiotlb_init_late()  local
402 	order = get_order(nslabs << IO_TLB_SHIFT);  in swiotlb_init_late()
403 	nslabs = SLABS_PER_PAGE << order;  in swiotlb_init_late()
411 		nslabs = SLABS_PER_PAGE << order;  in swiotlb_init_late()
419 		rc = remap(vstart, nslabs);  in swiotlb_init_late()
423 		nslabs = ALIGN(nslabs >> 1, IO_TLB_SEGSIZE);  in swiotlb_init_late()
424 		if (nslabs < IO_TLB_MIN_SLABS)  in swiotlb_init_late()
446 		get_order(array_size(sizeof(*mem->slots), nslabs)));  in swiotlb_init_late()
451 			     (nslabs << IO_TLB_SHIFT) >> PAGE_SHIFT);  in swiotlb_init_late()
452 	swiotlb_init_io_tlb_mem(mem, virt_to_phys(vstart), nslabs, 0, true,  in swiotlb_init_late()
475 	if (!mem->nslabs)  in swiotlb_exit()
481 	slots_size = PAGE_ALIGN(array_size(sizeof(*mem->slots), mem->nslabs));  in swiotlb_exit()
737 	if (!mem || !mem->nslabs) {  in swiotlb_tbl_map_single()
758 				 alloc_size, mem->nslabs, mem_used(mem));  in swiotlb_tbl_map_single()
916 	return mem && mem->nslabs;  in is_swiotlb_active()
931 	if (!mem->nslabs)  in swiotlb_create_debugfs_files()
934 	debugfs_create_ulong("io_tlb_nslabs", 0400, mem->debugfs, &mem->nslabs);  in swiotlb_create_debugfs_files()
985 	unsigned long nslabs = rmem->size >> IO_TLB_SHIFT;  in rmem_swiotlb_device_init()  local
1000 		mem->slots = kcalloc(nslabs, sizeof(*mem->slots), GFP_KERNEL);  in rmem_swiotlb_device_init()
1016 		swiotlb_init_io_tlb_mem(mem, rmem->base, nslabs, SWIOTLB_FORCE,  in rmem_swiotlb_device_init()