469 static int active_cacheline_read_overlap(phys_addr_t cln)  in active_cacheline_read_overlap()  argument
474 		if (radix_tree_tag_get(&dma_active_cacheline, cln, i))  in active_cacheline_read_overlap()
479 static int active_cacheline_set_overlap(phys_addr_t cln, int overlap)  in active_cacheline_set_overlap()  argument
488 			radix_tree_tag_set(&dma_active_cacheline, cln, i);  in active_cacheline_set_overlap()
490 			radix_tree_tag_clear(&dma_active_cacheline, cln, i);  in active_cacheline_set_overlap()
495 static void active_cacheline_inc_overlap(phys_addr_t cln)  in active_cacheline_inc_overlap()  argument
497 	int overlap = active_cacheline_read_overlap(cln);  in active_cacheline_inc_overlap()
499 	overlap = active_cacheline_set_overlap(cln, ++overlap);  in active_cacheline_inc_overlap()
509 		  ACTIVE_CACHELINE_MAX_OVERLAP, &cln);  in active_cacheline_inc_overlap()
512 static int active_cacheline_dec_overlap(phys_addr_t cln)  in active_cacheline_dec_overlap()  argument
514 	int overlap = active_cacheline_read_overlap(cln);  in active_cacheline_dec_overlap()
516 	return active_cacheline_set_overlap(cln, --overlap);  in active_cacheline_dec_overlap()
521 	phys_addr_t cln = to_cacheline_number(entry);  in active_cacheline_insert()  local
533 	rc = radix_tree_insert(&dma_active_cacheline, cln, entry);  in active_cacheline_insert()
535 		active_cacheline_inc_overlap(cln);  in active_cacheline_insert()
543 	phys_addr_t cln = to_cacheline_number(entry);  in active_cacheline_remove()  local
555 	if (active_cacheline_dec_overlap(cln) < 0)  in active_cacheline_remove()
556 		radix_tree_delete(&dma_active_cacheline, cln);  in active_cacheline_remove()
575 	phys_addr_t cln;  in debug_dma_assert_idle()  local
583 	cln = (phys_addr_t) page_to_pfn(page) << CACHELINE_PER_PAGE_SHIFT;  in debug_dma_assert_idle()
585 	nents = radix_tree_gang_lookup(&dma_active_cacheline, results, cln,  in debug_dma_assert_idle()
590 		if (ent_cln == cln) {  in debug_dma_assert_idle()
593 		} else if (ent_cln >= cln + CACHELINES_PER_PAGE)  in debug_dma_assert_idle()
601 	cln = to_cacheline_number(entry);  in debug_dma_assert_idle()
604 		   &cln);  in debug_dma_assert_idle()