Lines Matching full:area
24 struct iopt_area *area; member
39 iter->area = iopt_area_iter_first(iopt, iova, iova); in iopt_area_contig_init()
40 if (!iter->area) in iopt_area_contig_init()
42 if (!iter->area->pages) { in iopt_area_contig_init()
43 iter->area = NULL; in iopt_area_contig_init()
46 return iter->area; in iopt_area_contig_init()
53 if (!iter->area) in iopt_area_contig_next()
55 last_iova = iopt_area_last_iova(iter->area); in iopt_area_contig_next()
60 iter->area = iopt_area_iter_next(iter->area, iter->cur_iova, in iopt_area_contig_next()
62 if (!iter->area) in iopt_area_contig_next()
64 if (iter->cur_iova != iopt_area_iova(iter->area) || in iopt_area_contig_next()
65 !iter->area->pages) { in iopt_area_contig_next()
66 iter->area = NULL; in iopt_area_contig_next()
69 return iter->area; in iopt_area_contig_next()
187 * The area takes a slice of the pages from start_bytes to start_byte + length
189 static int iopt_insert_area(struct io_pagetable *iopt, struct iopt_area *area, in iopt_insert_area() argument
199 area->iommu_prot = iommu_prot; in iopt_insert_area()
200 area->page_offset = start_byte % PAGE_SIZE; in iopt_insert_area()
201 if (area->page_offset & (iopt->iova_alignment - 1)) in iopt_insert_area()
204 area->node.start = iova; in iopt_insert_area()
205 if (check_add_overflow(iova, length - 1, &area->node.last)) in iopt_insert_area()
208 area->pages_node.start = start_byte / PAGE_SIZE; in iopt_insert_area()
209 if (check_add_overflow(start_byte, length - 1, &area->pages_node.last)) in iopt_insert_area()
211 area->pages_node.last = area->pages_node.last / PAGE_SIZE; in iopt_insert_area()
212 if (WARN_ON(area->pages_node.last >= pages->npages)) in iopt_insert_area()
216 * The area is inserted with a NULL pages indicating it is not fully in iopt_insert_area()
219 area->iopt = iopt; in iopt_insert_area()
220 interval_tree_insert(&area->node, &iopt->area_itree); in iopt_insert_area()
226 struct iopt_area *area; in iopt_area_alloc() local
228 area = kzalloc(sizeof(*area), GFP_KERNEL_ACCOUNT); in iopt_area_alloc()
229 if (!area) in iopt_area_alloc()
231 RB_CLEAR_NODE(&area->node.rb); in iopt_area_alloc()
232 RB_CLEAR_NODE(&area->pages_node.rb); in iopt_area_alloc()
233 return area; in iopt_area_alloc()
246 elm->area = iopt_area_alloc(); in iopt_alloc_area_pages()
247 if (!elm->area) in iopt_alloc_area_pages()
283 rc = iopt_insert_area(iopt, elm->area, elm->pages, iova, in iopt_alloc_area_pages()
295 static void iopt_abort_area(struct iopt_area *area) in iopt_abort_area() argument
298 WARN_ON(area->pages); in iopt_abort_area()
299 if (area->iopt) { in iopt_abort_area()
300 down_write(&area->iopt->iova_rwsem); in iopt_abort_area()
301 interval_tree_remove(&area->node, &area->iopt->area_itree); in iopt_abort_area()
302 up_write(&area->iopt->iova_rwsem); in iopt_abort_area()
304 kfree(area); in iopt_abort_area()
313 if (elm->area) in iopt_free_pages_list()
314 iopt_abort_area(elm->area); in iopt_free_pages_list()
329 rc = iopt_area_fill_domains(elm->area, elm->pages); in iopt_fill_domains_pages()
339 iopt_area_unfill_domains(undo_elm->area, undo_elm->pages); in iopt_fill_domains_pages()
364 * area->pages must be set inside the domains_rwsem to ensure in iopt_map_pages()
368 elm->area->pages = elm->pages; in iopt_map_pages()
370 elm->area = NULL; in iopt_map_pages()
418 if (elm.area) in iopt_map_user_pages()
419 iopt_abort_area(elm.area); in iopt_map_user_pages()
432 struct iopt_area *area; in iopt_get_pages() local
441 iopt_for_each_contig_area(&iter, area, iopt, iova, last_iova) { in iopt_get_pages()
443 unsigned long last = min(last_iova, iopt_area_last_iova(area)); in iopt_get_pages()
450 elm->start_byte = iopt_area_start_byte(area, iter.cur_iova); in iopt_get_pages()
451 elm->pages = area->pages; in iopt_get_pages()
471 struct iopt_area *area; in iopt_unmap_iova_range() local
477 * The domains_rwsem must be held in read mode any time any area->pages in iopt_unmap_iova_range()
479 * concurrently with cleaning up the area. in iopt_unmap_iova_range()
484 while ((area = iopt_area_iter_first(iopt, start, last))) { in iopt_unmap_iova_range()
485 unsigned long area_last = iopt_area_last_iova(area); in iopt_unmap_iova_range()
486 unsigned long area_first = iopt_area_iova(area); in iopt_unmap_iova_range()
489 /* Userspace should not race map/unmap's of the same area */ in iopt_unmap_iova_range()
490 if (!area->pages) { in iopt_unmap_iova_range()
508 if (area->num_accesses) { in iopt_unmap_iova_range()
509 size_t length = iopt_area_length(area); in iopt_unmap_iova_range()
512 area->prevent_access = true; in iopt_unmap_iova_range()
524 pages = area->pages; in iopt_unmap_iova_range()
525 area->pages = NULL; in iopt_unmap_iova_range()
528 iopt_area_unfill_domains(area, pages); in iopt_unmap_iova_range()
529 iopt_abort_area(area); in iopt_unmap_iova_range()
692 * This is used when removing a domain from the iopt. Every area in the iopt
699 struct iopt_area *area; in iopt_unfill_domain() local
713 for (area = iopt_area_iter_first(iopt, 0, ULONG_MAX); area; in iopt_unfill_domain()
714 area = iopt_area_iter_next(area, 0, ULONG_MAX)) { in iopt_unfill_domain()
715 struct iopt_pages *pages = area->pages; in iopt_unfill_domain()
722 WARN_ON(!area->storage_domain); in iopt_unfill_domain()
723 if (area->storage_domain == domain) in iopt_unfill_domain()
724 area->storage_domain = storage_domain; in iopt_unfill_domain()
727 iopt_area_unmap_domain(area, domain); in iopt_unfill_domain()
732 for (area = iopt_area_iter_first(iopt, 0, ULONG_MAX); area; in iopt_unfill_domain()
733 area = iopt_area_iter_next(area, 0, ULONG_MAX)) { in iopt_unfill_domain()
734 struct iopt_pages *pages = area->pages; in iopt_unfill_domain()
740 interval_tree_remove(&area->pages_node, &pages->domains_itree); in iopt_unfill_domain()
741 WARN_ON(area->storage_domain != domain); in iopt_unfill_domain()
742 area->storage_domain = NULL; in iopt_unfill_domain()
743 iopt_area_unfill_domain(area, pages, domain); in iopt_unfill_domain()
753 * Fill the domain with PFNs from every area in the iopt. On failure the domain
760 struct iopt_area *area; in iopt_fill_domain() local
766 for (area = iopt_area_iter_first(iopt, 0, ULONG_MAX); area; in iopt_fill_domain()
767 area = iopt_area_iter_next(area, 0, ULONG_MAX)) { in iopt_fill_domain()
768 struct iopt_pages *pages = area->pages; in iopt_fill_domain()
774 rc = iopt_area_fill_domain(area, domain); in iopt_fill_domain()
779 if (!area->storage_domain) { in iopt_fill_domain()
781 area->storage_domain = domain; in iopt_fill_domain()
782 interval_tree_insert(&area->pages_node, in iopt_fill_domain()
790 end_area = area; in iopt_fill_domain()
791 for (area = iopt_area_iter_first(iopt, 0, ULONG_MAX); area; in iopt_fill_domain()
792 area = iopt_area_iter_next(area, 0, ULONG_MAX)) { in iopt_fill_domain()
793 struct iopt_pages *pages = area->pages; in iopt_fill_domain()
795 if (area == end_area) in iopt_fill_domain()
801 interval_tree_remove(&area->pages_node, in iopt_fill_domain()
803 area->storage_domain = NULL; in iopt_fill_domain()
805 iopt_area_unfill_domain(area, pages, domain); in iopt_fill_domain()
811 /* All existing area's conform to an increased page size */
816 struct iopt_area *area; in iopt_check_iova_alignment() local
821 for (area = iopt_area_iter_first(iopt, 0, ULONG_MAX); area; in iopt_check_iova_alignment()
822 area = iopt_area_iter_next(area, 0, ULONG_MAX)) in iopt_check_iova_alignment()
823 if ((iopt_area_iova(area) & align_mask) || in iopt_check_iova_alignment()
824 (iopt_area_length(area) & align_mask) || in iopt_check_iova_alignment()
825 (area->page_offset & align_mask)) in iopt_check_iova_alignment()
880 /* No area exists that is outside the allowed domain aperture */ in iopt_table_add_domain()
988 * iopt_area_split - Split an area into two parts at iova
989 * @area: The area to split
990 * @iova: Becomes the last of a new area
992 * This splits an area into two. It is part of the VFIO compatibility to allow
996 static int iopt_area_split(struct iopt_area *area, unsigned long iova) in iopt_area_split() argument
998 unsigned long alignment = area->iopt->iova_alignment; in iopt_area_split()
999 unsigned long last_iova = iopt_area_last_iova(area); in iopt_area_split()
1000 unsigned long start_iova = iopt_area_iova(area); in iopt_area_split()
1002 struct io_pagetable *iopt = area->iopt; in iopt_area_split()
1003 struct iopt_pages *pages = area->pages; in iopt_area_split()
1013 if (!pages || area->prevent_access) in iopt_area_split()
1017 iopt_area_start_byte(area, new_start) & (alignment - 1)) in iopt_area_split()
1035 if (area->num_accesses) { in iopt_area_split()
1044 if (area->storage_domain && !iopt->disable_large_pages) { in iopt_area_split()
1049 interval_tree_remove(&area->node, &iopt->area_itree); in iopt_area_split()
1050 rc = iopt_insert_area(iopt, lhs, area->pages, start_iova, in iopt_area_split()
1051 iopt_area_start_byte(area, start_iova), in iopt_area_split()
1053 area->iommu_prot); in iopt_area_split()
1057 rc = iopt_insert_area(iopt, rhs, area->pages, new_start, in iopt_area_split()
1058 iopt_area_start_byte(area, new_start), in iopt_area_split()
1059 last_iova - new_start + 1, area->iommu_prot); in iopt_area_split()
1064 * If the original area has filled a domain, domains_itree has to be in iopt_area_split()
1067 if (area->storage_domain) { in iopt_area_split()
1068 interval_tree_remove(&area->pages_node, &pages->domains_itree); in iopt_area_split()
1073 lhs->storage_domain = area->storage_domain; in iopt_area_split()
1074 lhs->pages = area->pages; in iopt_area_split()
1075 rhs->storage_domain = area->storage_domain; in iopt_area_split()
1076 rhs->pages = area->pages; in iopt_area_split()
1078 kfree(area); in iopt_area_split()
1090 interval_tree_insert(&area->node, &iopt->area_itree); in iopt_area_split()
1107 struct iopt_area *area; in iopt_cut_iova() local
1109 area = iopt_area_iter_first(iopt, iovas[i], iovas[i]); in iopt_cut_iova()
1110 if (!area) in iopt_cut_iova()
1112 rc = iopt_area_split(area, iovas[i]); in iopt_cut_iova()