Lines Matching refs:arena
29 static struct device *to_dev(struct arena_info *arena) in to_dev() argument
31 return &arena->nd_btt->dev; in to_dev()
39 static int arena_read_bytes(struct arena_info *arena, resource_size_t offset, in arena_read_bytes() argument
42 struct nd_btt *nd_btt = arena->nd_btt; in arena_read_bytes()
50 static int arena_write_bytes(struct arena_info *arena, resource_size_t offset, in arena_write_bytes() argument
53 struct nd_btt *nd_btt = arena->nd_btt; in arena_write_bytes()
61 static int btt_info_write(struct arena_info *arena, struct btt_sb *super) in btt_info_write() argument
70 dev_WARN_ONCE(to_dev(arena), !IS_ALIGNED(arena->infooff, 512), in btt_info_write()
71 "arena->infooff: %#llx is unaligned\n", arena->infooff); in btt_info_write()
72 dev_WARN_ONCE(to_dev(arena), !IS_ALIGNED(arena->info2off, 512), in btt_info_write()
73 "arena->info2off: %#llx is unaligned\n", arena->info2off); in btt_info_write()
75 ret = arena_write_bytes(arena, arena->info2off, super, in btt_info_write()
80 return arena_write_bytes(arena, arena->infooff, super, in btt_info_write()
84 static int btt_info_read(struct arena_info *arena, struct btt_sb *super) in btt_info_read() argument
86 return arena_read_bytes(arena, arena->infooff, super, in btt_info_read()
96 static int __btt_map_write(struct arena_info *arena, u32 lba, __le32 mapping, in __btt_map_write() argument
99 u64 ns_off = arena->mapoff + (lba * MAP_ENT_SIZE); in __btt_map_write()
101 if (unlikely(lba >= arena->external_nlba)) in __btt_map_write()
102 dev_err_ratelimited(to_dev(arena), in __btt_map_write()
104 __func__, lba, arena->external_nlba); in __btt_map_write()
105 return arena_write_bytes(arena, ns_off, &mapping, MAP_ENT_SIZE, flags); in __btt_map_write()
108 static int btt_map_write(struct arena_info *arena, u32 lba, u32 mapping, in btt_map_write() argument
143 dev_err_ratelimited(to_dev(arena), in btt_map_write()
149 return __btt_map_write(arena, lba, mapping_le, rwb_flags); in btt_map_write()
152 static int btt_map_read(struct arena_info *arena, u32 lba, u32 *mapping, in btt_map_read() argument
158 u64 ns_off = arena->mapoff + (lba * MAP_ENT_SIZE); in btt_map_read()
160 if (unlikely(lba >= arena->external_nlba)) in btt_map_read()
161 dev_err_ratelimited(to_dev(arena), in btt_map_read()
163 __func__, lba, arena->external_nlba); in btt_map_read()
165 ret = arena_read_bytes(arena, ns_off, &in, MAP_ENT_SIZE, rwb_flags); in btt_map_read()
208 static int btt_log_group_read(struct arena_info *arena, u32 lane, in btt_log_group_read() argument
211 return arena_read_bytes(arena, in btt_log_group_read()
212 arena->logoff + (lane * LOG_GRP_SIZE), log, in btt_log_group_read()
260 struct arena_info *arena; in btt_debugfs_init() local
267 list_for_each_entry(arena, &btt->arena_list, list) { in btt_debugfs_init()
268 arena_debugfs_init(arena, btt->debugfs_dir, i); in btt_debugfs_init()
329 static int btt_log_read(struct arena_info *arena, u32 lane, in btt_log_read() argument
336 ret = btt_log_group_read(arena, lane, &log); in btt_log_read()
340 old_ent = btt_log_get_old(arena, &log); in btt_log_read()
342 dev_err(to_dev(arena), in btt_log_read()
344 old_ent, lane, log.ent[arena->log_index[0]].seq, in btt_log_read()
345 log.ent[arena->log_index[1]].seq); in btt_log_read()
353 memcpy(ent, &log.ent[arena->log_index[ret_ent]], LOG_ENT_SIZE); in btt_log_read()
363 static int __btt_log_write(struct arena_info *arena, u32 lane, in __btt_log_write() argument
367 u32 group_slot = arena->log_index[sub]; in __btt_log_write()
372 ns_off = arena->logoff + (lane * LOG_GRP_SIZE) + in __btt_log_write()
375 ret = arena_write_bytes(arena, ns_off, src, log_half, flags); in __btt_log_write()
381 return arena_write_bytes(arena, ns_off, src, log_half, flags); in __btt_log_write()
384 static int btt_flog_write(struct arena_info *arena, u32 lane, u32 sub, in btt_flog_write() argument
389 ret = __btt_log_write(arena, lane, sub, ent, NVDIMM_IO_ATOMIC); in btt_flog_write()
394 arena->freelist[lane].sub = 1 - arena->freelist[lane].sub; in btt_flog_write()
395 if (++(arena->freelist[lane].seq) == 4) in btt_flog_write()
396 arena->freelist[lane].seq = 1; in btt_flog_write()
398 arena->freelist[lane].has_err = 1; in btt_flog_write()
399 arena->freelist[lane].block = ent_lba(le32_to_cpu(ent->old_map)); in btt_flog_write()
408 static int btt_map_init(struct arena_info *arena) in btt_map_init() argument
414 size_t mapsize = arena->logoff - arena->mapoff; in btt_map_init()
425 dev_WARN_ONCE(to_dev(arena), !IS_ALIGNED(arena->mapoff, 512), in btt_map_init()
426 "arena->mapoff: %#llx is unaligned\n", arena->mapoff); in btt_map_init()
431 dev_WARN_ONCE(to_dev(arena), size < 512, in btt_map_init()
433 ret = arena_write_bytes(arena, arena->mapoff + offset, zerobuf, in btt_map_init()
452 static int btt_log_init(struct arena_info *arena) in btt_log_init() argument
454 size_t logsize = arena->info2off - arena->logoff; in btt_log_init()
469 dev_WARN_ONCE(to_dev(arena), !IS_ALIGNED(arena->logoff, 512), in btt_log_init()
470 "arena->logoff: %#llx is unaligned\n", arena->logoff); in btt_log_init()
475 dev_WARN_ONCE(to_dev(arena), size < 512, in btt_log_init()
477 ret = arena_write_bytes(arena, arena->logoff + offset, zerobuf, in btt_log_init()
487 for (i = 0; i < arena->nfree; i++) { in btt_log_init()
489 ent.old_map = cpu_to_le32(arena->external_nlba + i); in btt_log_init()
490 ent.new_map = cpu_to_le32(arena->external_nlba + i); in btt_log_init()
492 ret = __btt_log_write(arena, i, 0, &ent, 0); in btt_log_init()
502 static u64 to_namespace_offset(struct arena_info *arena, u64 lba) in to_namespace_offset() argument
504 return arena->dataoff + ((u64)lba * arena->internal_lbasize); in to_namespace_offset()
507 static int arena_clear_freelist_error(struct arena_info *arena, u32 lane) in arena_clear_freelist_error() argument
511 if (arena->freelist[lane].has_err) { in arena_clear_freelist_error()
513 u32 lba = arena->freelist[lane].block; in arena_clear_freelist_error()
514 u64 nsoff = to_namespace_offset(arena, lba); in arena_clear_freelist_error()
515 unsigned long len = arena->sector_size; in arena_clear_freelist_error()
517 mutex_lock(&arena->err_lock); in arena_clear_freelist_error()
522 ret = arena_write_bytes(arena, nsoff, zero_page, in arena_clear_freelist_error()
529 arena->freelist[lane].has_err = 0; in arena_clear_freelist_error()
531 mutex_unlock(&arena->err_lock); in arena_clear_freelist_error()
536 static int btt_freelist_init(struct arena_info *arena) in btt_freelist_init() argument
542 arena->freelist = kcalloc(arena->nfree, sizeof(struct free_entry), in btt_freelist_init()
544 if (!arena->freelist) in btt_freelist_init()
547 for (i = 0; i < arena->nfree; i++) { in btt_freelist_init()
548 new = btt_log_read(arena, i, &log_new, LOG_NEW_ENT); in btt_freelist_init()
557 arena->freelist[i].sub = 1 - new; in btt_freelist_init()
558 arena->freelist[i].seq = nd_inc_seq(le32_to_cpu(log_new.seq)); in btt_freelist_init()
559 arena->freelist[i].block = log_oldmap; in btt_freelist_init()
567 arena->freelist[i].has_err = 1; in btt_freelist_init()
568 ret = arena_clear_freelist_error(arena, i); in btt_freelist_init()
570 dev_err_ratelimited(to_dev(arena), in btt_freelist_init()
579 ret = btt_map_read(arena, le32_to_cpu(log_new.lba), &map_entry, in btt_freelist_init()
596 ret = btt_map_write(arena, le32_to_cpu(log_new.lba), in btt_freelist_init()
625 static int log_set_indices(struct arena_info *arena) in log_set_indices() argument
633 for (i = 0; i < arena->nfree; i++) { in log_set_indices()
634 ret = btt_log_group_read(arena, i, &log); in log_set_indices()
712 dev_err(to_dev(arena), "Found an unknown padding scheme\n"); in log_set_indices()
716 arena->log_index[0] = log_index[0]; in log_set_indices()
717 arena->log_index[1] = log_index[1]; in log_set_indices()
718 dev_dbg(to_dev(arena), "log_index_0 = %d\n", log_index[0]); in log_set_indices()
719 dev_dbg(to_dev(arena), "log_index_1 = %d\n", log_index[1]); in log_set_indices()
723 static int btt_rtt_init(struct arena_info *arena) in btt_rtt_init() argument
725 arena->rtt = kcalloc(arena->nfree, sizeof(u32), GFP_KERNEL); in btt_rtt_init()
726 if (arena->rtt == NULL) in btt_rtt_init()
732 static int btt_maplocks_init(struct arena_info *arena) in btt_maplocks_init() argument
736 arena->map_locks = kcalloc(arena->nfree, sizeof(struct aligned_lock), in btt_maplocks_init()
738 if (!arena->map_locks) in btt_maplocks_init()
741 for (i = 0; i < arena->nfree; i++) in btt_maplocks_init()
742 spin_lock_init(&arena->map_locks[i].lock); in btt_maplocks_init()
750 struct arena_info *arena; in alloc_arena() local
754 arena = kzalloc(sizeof(*arena), GFP_KERNEL); in alloc_arena()
755 if (!arena) in alloc_arena()
757 arena->nd_btt = btt->nd_btt; in alloc_arena()
758 arena->sector_size = btt->sector_size; in alloc_arena()
759 mutex_init(&arena->err_lock); in alloc_arena()
762 return arena; in alloc_arena()
764 arena->size = size; in alloc_arena()
765 arena->external_lba_start = start; in alloc_arena()
766 arena->external_lbasize = btt->lbasize; in alloc_arena()
767 arena->internal_lbasize = roundup(arena->external_lbasize, in alloc_arena()
769 arena->nfree = BTT_DEFAULT_NFREE; in alloc_arena()
770 arena->version_major = btt->nd_btt->version_major; in alloc_arena()
771 arena->version_minor = btt->nd_btt->version_minor; in alloc_arena()
780 logsize = roundup(arena->nfree * LOG_GRP_SIZE, BTT_PG_SIZE); in alloc_arena()
784 arena->internal_nlba = div_u64(available - BTT_PG_SIZE, in alloc_arena()
785 arena->internal_lbasize + MAP_ENT_SIZE); in alloc_arena()
786 arena->external_nlba = arena->internal_nlba - arena->nfree; in alloc_arena()
788 mapsize = roundup((arena->external_nlba * MAP_ENT_SIZE), BTT_PG_SIZE); in alloc_arena()
792 arena->infooff = arena_off; in alloc_arena()
793 arena->dataoff = arena->infooff + BTT_PG_SIZE; in alloc_arena()
794 arena->mapoff = arena->dataoff + datasize; in alloc_arena()
795 arena->logoff = arena->mapoff + mapsize; in alloc_arena()
796 arena->info2off = arena->logoff + logsize; in alloc_arena()
799 arena->log_index[0] = 0; in alloc_arena()
800 arena->log_index[1] = 1; in alloc_arena()
801 return arena; in alloc_arena()
806 struct arena_info *arena, *next; in free_arenas() local
808 list_for_each_entry_safe(arena, next, &btt->arena_list, list) { in free_arenas()
809 list_del(&arena->list); in free_arenas()
810 kfree(arena->rtt); in free_arenas()
811 kfree(arena->map_locks); in free_arenas()
812 kfree(arena->freelist); in free_arenas()
813 debugfs_remove_recursive(arena->debugfs_dir); in free_arenas()
814 kfree(arena); in free_arenas()
822 static void parse_arena_meta(struct arena_info *arena, struct btt_sb *super, in parse_arena_meta() argument
825 arena->internal_nlba = le32_to_cpu(super->internal_nlba); in parse_arena_meta()
826 arena->internal_lbasize = le32_to_cpu(super->internal_lbasize); in parse_arena_meta()
827 arena->external_nlba = le32_to_cpu(super->external_nlba); in parse_arena_meta()
828 arena->external_lbasize = le32_to_cpu(super->external_lbasize); in parse_arena_meta()
829 arena->nfree = le32_to_cpu(super->nfree); in parse_arena_meta()
830 arena->version_major = le16_to_cpu(super->version_major); in parse_arena_meta()
831 arena->version_minor = le16_to_cpu(super->version_minor); in parse_arena_meta()
833 arena->nextoff = (super->nextoff == 0) ? 0 : (arena_off + in parse_arena_meta()
835 arena->infooff = arena_off; in parse_arena_meta()
836 arena->dataoff = arena_off + le64_to_cpu(super->dataoff); in parse_arena_meta()
837 arena->mapoff = arena_off + le64_to_cpu(super->mapoff); in parse_arena_meta()
838 arena->logoff = arena_off + le64_to_cpu(super->logoff); in parse_arena_meta()
839 arena->info2off = arena_off + le64_to_cpu(super->info2off); in parse_arena_meta()
841 arena->size = (le64_to_cpu(super->nextoff) > 0) in parse_arena_meta()
843 : (arena->info2off - arena->infooff + BTT_PG_SIZE); in parse_arena_meta()
845 arena->flags = le32_to_cpu(super->flags); in parse_arena_meta()
851 struct arena_info *arena; in discover_arenas() local
863 arena = alloc_arena(btt, 0, 0, 0); in discover_arenas()
864 if (!arena) in discover_arenas()
867 arena->infooff = cur_off; in discover_arenas()
868 ret = btt_info_read(arena, super); in discover_arenas()
875 dev_info(to_dev(arena), "No existing arenas\n"); in discover_arenas()
878 dev_err(to_dev(arena), in discover_arenas()
885 arena->external_lba_start = cur_nlba; in discover_arenas()
886 parse_arena_meta(arena, super, cur_off); in discover_arenas()
888 ret = log_set_indices(arena); in discover_arenas()
890 dev_err(to_dev(arena), in discover_arenas()
895 ret = btt_freelist_init(arena); in discover_arenas()
899 ret = btt_rtt_init(arena); in discover_arenas()
903 ret = btt_maplocks_init(arena); in discover_arenas()
907 list_add_tail(&arena->list, &btt->arena_list); in discover_arenas()
909 remaining -= arena->size; in discover_arenas()
910 cur_off += arena->size; in discover_arenas()
911 cur_nlba += arena->external_nlba; in discover_arenas()
914 if (arena->nextoff == 0) in discover_arenas()
924 kfree(arena); in discover_arenas()
935 struct arena_info *arena; in create_arenas() local
942 arena = alloc_arena(btt, arena_size, btt->nlba, cur_off); in create_arenas()
943 if (!arena) { in create_arenas()
947 btt->nlba += arena->external_nlba; in create_arenas()
949 arena->nextoff = arena->size; in create_arenas()
951 arena->nextoff = 0; in create_arenas()
953 list_add_tail(&arena->list, &btt->arena_list); in create_arenas()
965 static int btt_arena_write_layout(struct arena_info *arena) in btt_arena_write_layout() argument
970 struct nd_btt *nd_btt = arena->nd_btt; in btt_arena_write_layout()
973 ret = btt_map_init(arena); in btt_arena_write_layout()
977 ret = btt_log_init(arena); in btt_arena_write_layout()
988 super->flags = cpu_to_le32(arena->flags); in btt_arena_write_layout()
989 super->version_major = cpu_to_le16(arena->version_major); in btt_arena_write_layout()
990 super->version_minor = cpu_to_le16(arena->version_minor); in btt_arena_write_layout()
991 super->external_lbasize = cpu_to_le32(arena->external_lbasize); in btt_arena_write_layout()
992 super->external_nlba = cpu_to_le32(arena->external_nlba); in btt_arena_write_layout()
993 super->internal_lbasize = cpu_to_le32(arena->internal_lbasize); in btt_arena_write_layout()
994 super->internal_nlba = cpu_to_le32(arena->internal_nlba); in btt_arena_write_layout()
995 super->nfree = cpu_to_le32(arena->nfree); in btt_arena_write_layout()
997 super->nextoff = cpu_to_le64(arena->nextoff); in btt_arena_write_layout()
1002 super->dataoff = cpu_to_le64(arena->dataoff - arena->infooff); in btt_arena_write_layout()
1003 super->mapoff = cpu_to_le64(arena->mapoff - arena->infooff); in btt_arena_write_layout()
1004 super->logoff = cpu_to_le64(arena->logoff - arena->infooff); in btt_arena_write_layout()
1005 super->info2off = cpu_to_le64(arena->info2off - arena->infooff); in btt_arena_write_layout()
1011 ret = btt_info_write(arena, super); in btt_arena_write_layout()
1024 struct arena_info *arena; in btt_meta_init() local
1027 list_for_each_entry(arena, &btt->arena_list, list) { in btt_meta_init()
1028 ret = btt_arena_write_layout(arena); in btt_meta_init()
1032 ret = btt_freelist_init(arena); in btt_meta_init()
1036 ret = btt_rtt_init(arena); in btt_meta_init()
1040 ret = btt_maplocks_init(arena); in btt_meta_init()
1065 struct arena_info **arena) in lba_to_arena() argument
1072 *arena = arena_list; in lba_to_arena()
1086 static void lock_map(struct arena_info *arena, u32 premap) in lock_map() argument
1087 __acquires(&arena->map_locks[idx].lock) in lock_map()
1089 u32 idx = (premap * MAP_ENT_SIZE / L1_CACHE_BYTES) % arena->nfree; in lock_map()
1091 spin_lock(&arena->map_locks[idx].lock); in lock_map()
1094 static void unlock_map(struct arena_info *arena, u32 premap) in unlock_map() argument
1095 __releases(&arena->map_locks[idx].lock) in unlock_map()
1097 u32 idx = (premap * MAP_ENT_SIZE / L1_CACHE_BYTES) % arena->nfree; in unlock_map()
1099 spin_unlock(&arena->map_locks[idx].lock); in unlock_map()
1102 static int btt_data_read(struct arena_info *arena, struct page *page, in btt_data_read() argument
1106 u64 nsoff = to_namespace_offset(arena, lba); in btt_data_read()
1109 ret = arena_read_bytes(arena, nsoff, mem + off, len, NVDIMM_IO_ATOMIC); in btt_data_read()
1115 static int btt_data_write(struct arena_info *arena, u32 lba, in btt_data_write() argument
1119 u64 nsoff = to_namespace_offset(arena, lba); in btt_data_write()
1122 ret = arena_write_bytes(arena, nsoff, mem + off, len, NVDIMM_IO_ATOMIC); in btt_data_write()
1138 struct arena_info *arena, u32 postmap, int rw) in btt_rw_integrity() argument
1147 meta_nsoff = to_namespace_offset(arena, postmap) + btt->sector_size; in btt_rw_integrity()
1164 ret = arena_write_bytes(arena, meta_nsoff, mem, cur_len, in btt_rw_integrity()
1167 ret = arena_read_bytes(arena, meta_nsoff, mem, cur_len, in btt_rw_integrity()
1185 struct arena_info *arena, u32 postmap, int rw) in btt_rw_integrity() argument
1197 struct arena_info *arena = NULL; in btt_read_pg() local
1205 ret = lba_to_arena(btt, sector, &premap, &arena); in btt_read_pg()
1211 ret = btt_map_read(arena, premap, &postmap, &t_flag, &e_flag, in btt_read_pg()
1235 arena->rtt[lane] = RTT_VALID | postmap; in btt_read_pg()
1242 ret = btt_map_read(arena, premap, &new_map, &new_t, in btt_read_pg()
1256 ret = btt_data_read(arena, page, off, postmap, cur_len); in btt_read_pg()
1259 if (btt_map_write(arena, premap, postmap, 0, 1, NVDIMM_IO_ATOMIC)) in btt_read_pg()
1260 dev_warn_ratelimited(to_dev(arena), in btt_read_pg()
1267 ret = btt_rw_integrity(btt, bip, arena, postmap, READ); in btt_read_pg()
1272 arena->rtt[lane] = RTT_INVALID; in btt_read_pg()
1283 arena->rtt[lane] = RTT_INVALID; in btt_read_pg()
1294 static bool btt_is_badblock(struct btt *btt, struct arena_info *arena, in btt_is_badblock() argument
1297 u64 nsoff = adjust_initial_offset(arena->nd_btt, in btt_is_badblock()
1298 to_namespace_offset(arena, postmap)); in btt_is_badblock()
1301 return is_bad_pmem(btt->phys_bb, phys_sector, arena->internal_lbasize); in btt_is_badblock()
1309 struct arena_info *arena = NULL; in btt_write_pg() local
1321 ret = lba_to_arena(btt, sector, &premap, &arena); in btt_write_pg()
1326 if ((arena->flags & IB_FLAG_ERROR_MASK) != 0) { in btt_write_pg()
1331 if (btt_is_badblock(btt, arena, arena->freelist[lane].block)) in btt_write_pg()
1332 arena->freelist[lane].has_err = 1; in btt_write_pg()
1334 if (mutex_is_locked(&arena->err_lock) in btt_write_pg()
1335 || arena->freelist[lane].has_err) { in btt_write_pg()
1338 ret = arena_clear_freelist_error(arena, lane); in btt_write_pg()
1346 new_postmap = arena->freelist[lane].block; in btt_write_pg()
1349 for (i = 0; i < arena->nfree; i++) in btt_write_pg()
1350 while (arena->rtt[i] == (RTT_VALID | new_postmap)) in btt_write_pg()
1354 if (new_postmap >= arena->internal_nlba) { in btt_write_pg()
1359 ret = btt_data_write(arena, new_postmap, page, off, cur_len); in btt_write_pg()
1364 ret = btt_rw_integrity(btt, bip, arena, new_postmap, in btt_write_pg()
1370 lock_map(arena, premap); in btt_write_pg()
1371 ret = btt_map_read(arena, premap, &old_postmap, NULL, &e_flag, in btt_write_pg()
1375 if (old_postmap >= arena->internal_nlba) { in btt_write_pg()
1385 log.seq = cpu_to_le32(arena->freelist[lane].seq); in btt_write_pg()
1386 sub = arena->freelist[lane].sub; in btt_write_pg()
1387 ret = btt_flog_write(arena, lane, sub, &log); in btt_write_pg()
1391 ret = btt_map_write(arena, premap, new_postmap, 0, 0, in btt_write_pg()
1396 unlock_map(arena, premap); in btt_write_pg()
1400 ret = arena_clear_freelist_error(arena, lane); in btt_write_pg()
1413 unlock_map(arena, premap); in btt_write_pg()