149 static void swiotlb_adjust_nareas(unsigned int nareas)  in swiotlb_adjust_nareas()  argument
151 	if (!nareas)  in swiotlb_adjust_nareas()
152 		nareas = 1;  in swiotlb_adjust_nareas()
153 	else if (!is_power_of_2(nareas))  in swiotlb_adjust_nareas()
154 		nareas = roundup_pow_of_two(nareas);  in swiotlb_adjust_nareas()
156 	default_nareas = nareas;  in swiotlb_adjust_nareas()
158 	pr_info("area num %d.\n", nareas);  in swiotlb_adjust_nareas()
174 static unsigned int limit_nareas(unsigned int nareas, unsigned long nslots)  in limit_nareas()  argument
176 	if (nslots < nareas * IO_TLB_SEGSIZE)  in limit_nareas()
178 	return nareas;  in limit_nareas()
267 		unsigned long nslabs, bool late_alloc, unsigned int nareas)  in swiotlb_init_io_tlb_pool()  argument
276 	mem->nareas = nareas;  in swiotlb_init_io_tlb_pool()
277 	mem->area_nslabs = nslabs / mem->nareas;  in swiotlb_init_io_tlb_pool()
279 	for (i = 0; i < mem->nareas; i++) {  in swiotlb_init_io_tlb_pool()
354 	unsigned int nareas;  in swiotlb_init_remap()  local
379 	nareas = limit_nareas(default_nareas, nslabs);  in swiotlb_init_remap()
384 		nareas = limit_nareas(nareas, nslabs);  in swiotlb_init_remap()
402 		nareas), SMP_CACHE_BYTES);  in swiotlb_init_remap()
408 	swiotlb_init_io_tlb_pool(mem, __pa(tlb), nslabs, false, nareas);  in swiotlb_init_remap()
430 	unsigned int nareas;  in swiotlb_init_late()  local
492 	nareas = limit_nareas(default_nareas, nslabs);  in swiotlb_init_late()
493 	area_order = get_order(array_size(sizeof(*mem->areas), nareas));  in swiotlb_init_late()
507 				 nareas);  in swiotlb_init_late()
541 			mem->nareas));  in swiotlb_exit()
547 			array_size(sizeof(*mem->areas), mem->nareas));  in swiotlb_exit()
673 		unsigned int nareas, u64 phys_limit, gfp_t gfp)  in swiotlb_alloc_pool()  argument
683 		nareas = limit_nareas(nareas, nslabs);  in swiotlb_alloc_pool()
686 	pool_size = sizeof(*pool) + array_size(sizeof(*pool->areas), nareas);  in swiotlb_alloc_pool()
697 		nareas = limit_nareas(nareas, nslabs);  in swiotlb_alloc_pool()
707 	swiotlb_init_io_tlb_pool(pool, page_to_phys(tlb), nslabs, true, nareas);  in swiotlb_alloc_pool()
986 	BUG_ON(area_index >= pool->nareas);  in swiotlb_area_find_slots()
1079 	int start = raw_smp_processor_id() & (pool->nareas - 1);  in swiotlb_pool_find_slots()
1087 		if (++i >= pool->nareas)  in swiotlb_pool_find_slots()
1225 	for (i = 0; i < pool->nareas; i++)  in mem_pool_used()
1331 	BUG_ON(aindex >= mem->nareas);  in swiotlb_release_slots()
1634 	unsigned int nareas = 1;  in rmem_swiotlb_device_init()  local
1660 		pool->areas = kcalloc(nareas, sizeof(*pool->areas),  in rmem_swiotlb_device_init()
1671 					 false, nareas);  in rmem_swiotlb_device_init()