483 static int active_cacheline_read_overlap(phys_addr_t cln)  in active_cacheline_read_overlap()  argument
488 		if (radix_tree_tag_get(&dma_active_cacheline, cln, i))  in active_cacheline_read_overlap()
493 static int active_cacheline_set_overlap(phys_addr_t cln, int overlap)  in active_cacheline_set_overlap()  argument
502 			radix_tree_tag_set(&dma_active_cacheline, cln, i);  in active_cacheline_set_overlap()
504 			radix_tree_tag_clear(&dma_active_cacheline, cln, i);  in active_cacheline_set_overlap()
509 static void active_cacheline_inc_overlap(phys_addr_t cln)  in active_cacheline_inc_overlap()  argument
511 	int overlap = active_cacheline_read_overlap(cln);  in active_cacheline_inc_overlap()
513 	overlap = active_cacheline_set_overlap(cln, ++overlap);  in active_cacheline_inc_overlap()
523 		  ACTIVE_CACHELINE_MAX_OVERLAP, &cln);  in active_cacheline_inc_overlap()
526 static int active_cacheline_dec_overlap(phys_addr_t cln)  in active_cacheline_dec_overlap()  argument
528 	int overlap = active_cacheline_read_overlap(cln);  in active_cacheline_dec_overlap()
530 	return active_cacheline_set_overlap(cln, --overlap);  in active_cacheline_dec_overlap()
535 	phys_addr_t cln = to_cacheline_number(entry);  in active_cacheline_insert()  local
547 	rc = radix_tree_insert(&dma_active_cacheline, cln, entry);  in active_cacheline_insert()
549 		active_cacheline_inc_overlap(cln);  in active_cacheline_insert()
557 	phys_addr_t cln = to_cacheline_number(entry);  in active_cacheline_remove()  local
569 	if (active_cacheline_dec_overlap(cln) < 0)  in active_cacheline_remove()
570 		radix_tree_delete(&dma_active_cacheline, cln);  in active_cacheline_remove()
589 	phys_addr_t cln;  in debug_dma_assert_idle()  local
597 	cln = (phys_addr_t) page_to_pfn(page) << CACHELINE_PER_PAGE_SHIFT;  in debug_dma_assert_idle()
599 	nents = radix_tree_gang_lookup(&dma_active_cacheline, results, cln,  in debug_dma_assert_idle()
604 		if (ent_cln == cln) {  in debug_dma_assert_idle()
607 		} else if (ent_cln >= cln + CACHELINES_PER_PAGE)  in debug_dma_assert_idle()
615 	cln = to_cacheline_number(entry);  in debug_dma_assert_idle()
618 		   &cln);  in debug_dma_assert_idle()