lightnvm: simplify geometry structure

Currently, the device geometry is stored redundantly in the nvm_id and
nvm_geo structures at a device level. Moreover, when instantiating
targets on a specific number of LUNs, these structures are replicated
and manually modified to fit the instance channel and LUN partitioning.

Instead, create a generic geometry around nvm_geo, which can be used by
(i) the underlying device to describe the geometry of the whole device,
and (ii) instances to describe their geometry independently.

Signed-off-by: Javier González <[e-mail]>
Signed-off-by: Matias Bjørling <[e-mail]>
Signed-off-by: Jens Axboe <[e-mail]>

drivers/lightnvm/core.c

···
 	int blun = lun_begin % dev->geo.nr_luns;
 	int lunid = 0;
 	int lun_balanced = 1;
-	int prev_nr_luns;
+	int sec_per_lun, prev_nr_luns;
 	int i, j;
 
 	nr_chnls = (nr_chnls_mod == 0) ? nr_chnls : nr_chnls + 1;
···
 	if (!tgt_dev)
 		goto err_ch;
 
+	/* Inherit device geometry from parent */
 	memcpy(&tgt_dev->geo, &dev->geo, sizeof(struct nvm_geo));
+
 	/* Target device only owns a portion of the physical device */
 	tgt_dev->geo.nr_chnls = nr_chnls;
-	tgt_dev->geo.all_luns = nr_luns;
 	tgt_dev->geo.nr_luns = (lun_balanced) ? prev_nr_luns : -1;
+	tgt_dev->geo.all_luns = nr_luns;
+	tgt_dev->geo.all_chunks = nr_luns * dev->geo.nr_chks;
+
 	tgt_dev->geo.op = op;
-	tgt_dev->total_secs = nr_luns * tgt_dev->geo.sec_per_lun;
+
+	sec_per_lun = dev->geo.clba * dev->geo.nr_chks;
+	tgt_dev->geo.total_secs = nr_luns * sec_per_lun;
+
 	tgt_dev->q = dev->q;
 	tgt_dev->map = dev_map;
 	tgt_dev->luns = luns;
-	memcpy(&tgt_dev->identity, &dev->identity, sizeof(struct nvm_id));
-
 	tgt_dev->parent = dev;
 
 	return tgt_dev;
···
 static int __nvm_config_extended(struct nvm_dev *dev,
 				 struct nvm_ioctl_create_extended *e)
 {
-	struct nvm_geo *geo = &dev->geo;
-
 	if (e->lun_begin == 0xFFFF && e->lun_end == 0xFFFF) {
 		e->lun_begin = 0;
 		e->lun_end = dev->geo.all_luns - 1;
···
 		return -EINVAL;
 	}
 
-	return nvm_config_check_luns(geo, e->lun_begin, e->lun_end);
+	return nvm_config_check_luns(&dev->geo, e->lun_begin, e->lun_end);
 }
 
 static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
···
 	tqueue->queuedata = targetdata;
 
 	blk_queue_max_hw_sectors(tqueue,
-			(dev->geo.sec_size >> 9) * NVM_MAX_VLBA);
+			(dev->geo.csecs >> 9) * NVM_MAX_VLBA);
 
 	set_capacity(tdisk, tt->capacity(targetdata));
 	add_disk(tdisk);
···
 
 static int nvm_core_init(struct nvm_dev *dev)
 {
-	struct nvm_id *id = &dev->identity;
 	struct nvm_geo *geo = &dev->geo;
 	int ret;
 
-	memcpy(&geo->ppaf, &id->ppaf, sizeof(struct nvm_addr_format));
-
-	if (id->mtype != 0) {
-		pr_err("nvm: memory type not supported\n");
-		return -EINVAL;
-	}
-
-	/* Whole device values */
-	geo->nr_chnls = id->num_ch;
-	geo->nr_luns = id->num_lun;
-
-	/* Generic device geometry values */
-	geo->ws_min = id->ws_min;
-	geo->ws_opt = id->ws_opt;
-	geo->ws_seq = id->ws_seq;
-	geo->ws_per_chk = id->ws_per_chk;
-	geo->nr_chks = id->num_chk;
-	geo->mccap = id->mccap;
-
-	geo->sec_per_chk = id->clba;
-	geo->sec_per_lun = geo->sec_per_chk * geo->nr_chks;
-	geo->all_luns = geo->nr_luns * geo->nr_chnls;
-
-	/* 1.2 spec device geometry values */
-	geo->plane_mode = 1 << geo->ws_seq;
-	geo->nr_planes = geo->ws_opt / geo->ws_min;
-	geo->sec_per_pg = geo->ws_min;
-	geo->sec_per_pl = geo->sec_per_pg * geo->nr_planes;
-
-	dev->total_secs = geo->all_luns * geo->sec_per_lun;
 	dev->lun_map = kcalloc(BITS_TO_LONGS(geo->all_luns),
 					sizeof(unsigned long), GFP_KERNEL);
 	if (!dev->lun_map)
···
 	struct nvm_geo *geo = &dev->geo;
 	int ret = -EINVAL;
 
-	if (dev->ops->identity(dev, &dev->identity)) {
+	if (dev->ops->identity(dev)) {
 		pr_err("nvm: device could not be identified\n");
 		goto err;
 	}
 
-	if (dev->identity.ver_id != 1 && dev->identity.ver_id != 2) {
-		pr_err("nvm: device ver_id %d not supported by kernel.\n",
-				dev->identity.ver_id);
-		goto err;
-	}
+	pr_debug("nvm: ver:%u nvm_vendor:%x\n",
+				geo->ver_id,
+				geo->vmnt);
 
 	ret = nvm_core_init(dev);
 	if (ret) {
···
 		goto err;
 	}
 
-	pr_info("nvm: registered %s [%u/%u/%u/%u/%u/%u]\n",
-			dev->name, geo->sec_per_pg, geo->nr_planes,
-			geo->ws_per_chk, geo->nr_chks,
-			geo->all_luns, geo->nr_chnls);
+	pr_info("nvm: registered %s [%u/%u/%u/%u/%u]\n",
+			dev->name, geo->ws_min, geo->ws_opt,
+			geo->nr_chks, geo->all_luns,
+			geo->nr_chnls);
 	return 0;
 err:
 	pr_err("nvm: failed to initialize nvm\n");

drivers/lightnvm/pblk-core.c

···
 	memset(&rqd, 0, sizeof(struct nvm_rq));
 
 	rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
-	rq_len = rq_ppas * geo->sec_size;
+	rq_len = rq_ppas * geo->csecs;
 
 	bio = pblk_bio_map_addr(pblk, emeta_buf, rq_ppas, rq_len,
 					l_mg->emeta_alloc_type, GFP_KERNEL);
···
 	if (bit >= lm->blk_per_line)
 		return -1;
 
-	return bit * geo->sec_per_pl;
+	return bit * geo->ws_opt;
 }
 
 static int pblk_line_submit_smeta_io(struct pblk *pblk, struct pblk_line *line,
···
 	/* Capture bad block information on line mapping bitmaps */
 	while ((bit = find_next_bit(line->blk_bitmap, lm->blk_per_line,
 					bit + 1)) < lm->blk_per_line) {
-		off = bit * geo->sec_per_pl;
+		off = bit * geo->ws_opt;
 		bitmap_shift_left(l_mg->bb_aux, l_mg->bb_template, off,
 							lm->sec_per_line);
 		bitmap_or(line->map_bitmap, line->map_bitmap, l_mg->bb_aux,
 							lm->sec_per_line);
-		line->sec_in_line -= geo->sec_per_chk;
+		line->sec_in_line -= geo->clba;
 	}
 
 	/* Mark smeta metadata sectors as bad sectors */
 	bit = find_first_zero_bit(line->blk_bitmap, lm->blk_per_line);
-	off = bit * geo->sec_per_pl;
+	off = bit * geo->ws_opt;
 	bitmap_set(line->map_bitmap, off, lm->smeta_sec);
 	line->sec_in_line -= lm->smeta_sec;
 	line->smeta_ssec = off;
···
 	emeta_secs = lm->emeta_sec[0];
 	off = lm->sec_per_line;
 	while (emeta_secs) {
-		off -= geo->sec_per_pl;
+		off -= geo->ws_opt;
 		if (!test_bit(off, line->invalid_bitmap)) {
-			bitmap_set(line->invalid_bitmap, off, geo->sec_per_pl);
-			emeta_secs -= geo->sec_per_pl;
+			bitmap_set(line->invalid_bitmap, off, geo->ws_opt);
+			emeta_secs -= geo->ws_opt;
 		}
 	}
 

drivers/lightnvm/pblk-gc.c

···
 
 	up(&gc->gc_sem);
 
-	gc_rq->data = vmalloc(gc_rq->nr_secs * geo->sec_size);
+	gc_rq->data = vmalloc(gc_rq->nr_secs * geo->csecs);
 	if (!gc_rq->data) {
 		pr_err("pblk: could not GC line:%d (%d/%d)\n",
 					line->id, *line->vsc, gc_rq->nr_secs);

drivers/lightnvm/pblk-init.c

···
 		return -ENOMEM;
 
 	power_size = get_count_order(nr_entries);
-	power_seg_sz = get_count_order(geo->sec_size);
+	power_seg_sz = get_count_order(geo->csecs);
 
 	return pblk_rb_init(&pblk->rwb, entries, power_size, power_seg_sz);
 }
···
 /* Minimum pages needed within a lun */
 #define ADDR_POOL_SIZE 64
 
-static int pblk_set_ppaf(struct pblk *pblk)
+static int pblk_set_addrf_12(struct nvm_geo *geo, struct nvm_addrf_12 *dst)
 {
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
-	struct nvm_addr_format ppaf = geo->ppaf;
-	int mod, power_len;
-
-	div_u64_rem(geo->sec_per_chk, pblk->min_write_pgs, &mod);
-	if (mod) {
-		pr_err("pblk: bad configuration of sectors/pages\n");
-		return -EINVAL;
-	}
+	struct nvm_addrf_12 *src = (struct nvm_addrf_12 *)&geo->addrf;
+	int power_len;
 
 	/* Re-calculate channel and lun format to adapt to configuration */
 	power_len = get_count_order(geo->nr_chnls);
···
 		pr_err("pblk: supports only power-of-two channel config.\n");
 		return -EINVAL;
 	}
-	ppaf.ch_len = power_len;
+	dst->ch_len = power_len;
 
 	power_len = get_count_order(geo->nr_luns);
 	if (1 << power_len != geo->nr_luns) {
 		pr_err("pblk: supports only power-of-two LUN config.\n");
 		return -EINVAL;
 	}
-	ppaf.lun_len = power_len;
+	dst->lun_len = power_len;
 
-	pblk->ppaf.sec_offset = 0;
-	pblk->ppaf.pln_offset = ppaf.sect_len;
-	pblk->ppaf.ch_offset = pblk->ppaf.pln_offset + ppaf.pln_len;
-	pblk->ppaf.lun_offset = pblk->ppaf.ch_offset + ppaf.ch_len;
-	pblk->ppaf.pg_offset = pblk->ppaf.lun_offset + ppaf.lun_len;
-	pblk->ppaf.blk_offset = pblk->ppaf.pg_offset + ppaf.pg_len;
-	pblk->ppaf.sec_mask = (1ULL << ppaf.sect_len) - 1;
-	pblk->ppaf.pln_mask = ((1ULL << ppaf.pln_len) - 1) <<
-							pblk->ppaf.pln_offset;
-	pblk->ppaf.ch_mask = ((1ULL << ppaf.ch_len) - 1) <<
-							pblk->ppaf.ch_offset;
-	pblk->ppaf.lun_mask = ((1ULL << ppaf.lun_len) - 1) <<
-							pblk->ppaf.lun_offset;
-	pblk->ppaf.pg_mask = ((1ULL << ppaf.pg_len) - 1) <<
-							pblk->ppaf.pg_offset;
-	pblk->ppaf.blk_mask = ((1ULL << ppaf.blk_len) - 1) <<
-							pblk->ppaf.blk_offset;
+	dst->blk_len = src->blk_len;
+	dst->pg_len = src->pg_len;
+	dst->pln_len = src->pln_len;
+	dst->sect_len = src->sect_len;
 
-	pblk->ppaf_bitsize = pblk->ppaf.blk_offset + ppaf.blk_len;
+	dst->sect_offset = 0;
+	dst->pln_offset = dst->sect_len;
+	dst->ch_offset = dst->pln_offset + dst->pln_len;
+	dst->lun_offset = dst->ch_offset + dst->ch_len;
+	dst->pg_offset = dst->lun_offset + dst->lun_len;
+	dst->blk_offset = dst->pg_offset + dst->pg_len;
+
+	dst->sec_mask = ((1ULL << dst->sect_len) - 1) << dst->sect_offset;
+	dst->pln_mask = ((1ULL << dst->pln_len) - 1) << dst->pln_offset;
+	dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset;
+	dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset;
+	dst->pg_mask = ((1ULL << dst->pg_len) - 1) << dst->pg_offset;
+	dst->blk_mask = ((1ULL << dst->blk_len) - 1) << dst->blk_offset;
+
+	return dst->blk_offset + src->blk_len;
+}
+
+static int pblk_set_ppaf(struct pblk *pblk)
+{
+	struct nvm_tgt_dev *dev = pblk->dev;
+	struct nvm_geo *geo = &dev->geo;
+	int mod;
+
+	div_u64_rem(geo->clba, pblk->min_write_pgs, &mod);
+	if (mod) {
+		pr_err("pblk: bad configuration of sectors/pages\n");
+		return -EINVAL;
+	}
+
+	pblk->ppaf_bitsize = pblk_set_addrf_12(geo, (void *)&pblk->ppaf);
 
 	return 0;
 }
···
 	atomic64_set(&pblk->nr_flush, 0);
 	pblk->nr_flush_rst = 0;
 
-	pblk->pgs_in_buffer = NVM_MEM_PAGE_WRITE * geo->sec_per_pg *
-						geo->nr_planes * geo->all_luns;
+	pblk->pgs_in_buffer = geo->mw_cunits * geo->all_luns;
 
-	pblk->min_write_pgs = geo->sec_per_pl * (geo->sec_size / PAGE_SIZE);
+	pblk->min_write_pgs = geo->ws_opt * (geo->csecs / PAGE_SIZE);
 	max_write_ppas = pblk->min_write_pgs * geo->all_luns;
 	pblk->max_write_pgs = min_t(int, max_write_ppas, NVM_MAX_VLBA);
 	pblk_set_sec_per_write(pblk, pblk->min_write_pgs);
···
 	/* Round to sector size so that lba_list starts on its own sector */
 	lm->emeta_sec[1] = DIV_ROUND_UP(
 			sizeof(struct line_emeta) + lm->blk_bitmap_len +
-			sizeof(struct wa_counters), geo->sec_size);
-	lm->emeta_len[1] = lm->emeta_sec[1] * geo->sec_size;
+			sizeof(struct wa_counters), geo->csecs);
+	lm->emeta_len[1] = lm->emeta_sec[1] * geo->csecs;
 
 	/* Round to sector size so that vsc_list starts on its own sector */
 	lm->dsec_per_line = lm->sec_per_line - lm->emeta_sec[0];
 	lm->emeta_sec[2] = DIV_ROUND_UP(lm->dsec_per_line * sizeof(u64),
-			geo->sec_size);
-	lm->emeta_len[2] = lm->emeta_sec[2] * geo->sec_size;
+			geo->csecs);
+	lm->emeta_len[2] = lm->emeta_sec[2] * geo->csecs;
 
 	lm->emeta_sec[3] = DIV_ROUND_UP(l_mg->nr_lines * sizeof(u32),
-			geo->sec_size);
-	lm->emeta_len[3] = lm->emeta_sec[3] * geo->sec_size;
+			geo->csecs);
+	lm->emeta_len[3] = lm->emeta_sec[3] * geo->csecs;
 
 	lm->vsc_list_len = l_mg->nr_lines * sizeof(u32);
 
···
 	 * on user capacity consider only provisioned blocks
 	 */
 	pblk->rl.total_blocks = nr_free_blks;
-	pblk->rl.nr_secs = nr_free_blks * geo->sec_per_chk;
+	pblk->rl.nr_secs = nr_free_blks * geo->clba;
 
 	/* Consider sectors used for metadata */
 	sec_meta = (lm->smeta_sec + lm->emeta_sec[0]) * l_mg->nr_free_lines;
-	blk_meta = DIV_ROUND_UP(sec_meta, geo->sec_per_chk);
+	blk_meta = DIV_ROUND_UP(sec_meta, geo->clba);
 
-	pblk->capacity = (provisioned - blk_meta) * geo->sec_per_chk;
+	pblk->capacity = (provisioned - blk_meta) * geo->clba;
 
 	atomic_set(&pblk->rl.free_blocks, nr_free_blks);
 	atomic_set(&pblk->rl.free_user_blocks, nr_free_blks);
···
 	unsigned int smeta_len, emeta_len;
 	int i;
 
-	lm->sec_per_line = geo->sec_per_chk * geo->all_luns;
+	lm->sec_per_line = geo->clba * geo->all_luns;
 	lm->blk_per_line = geo->all_luns;
 	lm->blk_bitmap_len = BITS_TO_LONGS(geo->all_luns) * sizeof(long);
 	lm->sec_bitmap_len = BITS_TO_LONGS(lm->sec_per_line) * sizeof(long);
···
 	 */
 	i = 1;
 add_smeta_page:
-	lm->smeta_sec = i * geo->sec_per_pl;
-	lm->smeta_len = lm->smeta_sec * geo->sec_size;
+	lm->smeta_sec = i * geo->ws_opt;
+	lm->smeta_len = lm->smeta_sec * geo->csecs;
 
 	smeta_len = sizeof(struct line_smeta) + lm->lun_bitmap_len;
 	if (smeta_len > lm->smeta_len) {
···
 	 */
 	i = 1;
 add_emeta_page:
-	lm->emeta_sec[0] = i * geo->sec_per_pl;
-	lm->emeta_len[0] = lm->emeta_sec[0] * geo->sec_size;
+	lm->emeta_sec[0] = i * geo->ws_opt;
+	lm->emeta_len[0] = lm->emeta_sec[0] * geo->csecs;
 
 	emeta_len = calc_emeta_len(pblk);
 	if (emeta_len > lm->emeta_len[0]) {
···
 	lm->min_blk_line = 1;
 	if (geo->all_luns > 1)
 		lm->min_blk_line += DIV_ROUND_UP(lm->smeta_sec +
-					lm->emeta_sec[0], geo->sec_per_chk);
+					lm->emeta_sec[0], geo->clba);
 
 	if (lm->min_blk_line > lm->blk_per_line) {
 		pr_err("pblk: config. not supported. Min. LUN in line:%d\n",
···
 	struct pblk *pblk;
 	int ret;
 
-	if (dev->identity.dom & NVM_RSP_L2P) {
+	if (dev->geo.dom & NVM_RSP_L2P) {
 		pr_err("pblk: host-side L2P table not supported. (%x)\n",
-							dev->identity.dom);
+							dev->geo.dom);
 		return ERR_PTR(-EINVAL);
 	}
 
···
 
 	blk_queue_write_cache(tqueue, true, false);
 
-	tqueue->limits.discard_granularity = geo->sec_per_chk * geo->sec_size;
+	tqueue->limits.discard_granularity = geo->clba * geo->csecs;
 	tqueue->limits.discard_alignment = 0;
 	blk_queue_max_discard_sectors(tqueue, UINT_MAX >> 9);
 	blk_queue_flag_set(QUEUE_FLAG_DISCARD, tqueue);

drivers/lightnvm/pblk-read.c

···
 	if (!(gc_rq->secs_to_gc))
 		goto out;
 
-	data_len = (gc_rq->secs_to_gc) * geo->sec_size;
+	data_len = (gc_rq->secs_to_gc) * geo->csecs;
 	bio = pblk_bio_map_addr(pblk, gc_rq->data, gc_rq->secs_to_gc, data_len,
 						PBLK_VMALLOC_META, GFP_KERNEL);
 	if (IS_ERR(bio)) {

drivers/lightnvm/pblk-recovery.c

···
 	int nr_bb = bitmap_weight(line->blk_bitmap, lm->blk_per_line);
 
 	return lm->sec_per_line - lm->smeta_sec - lm->emeta_sec[0] -
-				nr_bb * geo->sec_per_chk;
+				nr_bb * geo->clba;
 }
 
 struct pblk_recov_alloc {
···
 	rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
 	if (!rq_ppas)
 		rq_ppas = pblk->min_write_pgs;
-	rq_len = rq_ppas * geo->sec_size;
+	rq_len = rq_ppas * geo->csecs;
 
 	bio = bio_map_kern(dev->q, data, rq_len, GFP_KERNEL);
 	if (IS_ERR(bio))
···
 	if (!pad_rq)
 		return -ENOMEM;
 
-	data = vzalloc(pblk->max_write_pgs * geo->sec_size);
+	data = vzalloc(pblk->max_write_pgs * geo->csecs);
 	if (!data) {
 		ret = -ENOMEM;
 		goto free_rq;
···
 		goto fail_free_pad;
 	}
 
-	rq_len = rq_ppas * geo->sec_size;
+	rq_len = rq_ppas * geo->csecs;
 
 	meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL, &dma_meta_list);
 	if (!meta_list) {
···
 	rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
 	if (!rq_ppas)
 		rq_ppas = pblk->min_write_pgs;
-	rq_len = rq_ppas * geo->sec_size;
+	rq_len = rq_ppas * geo->csecs;
 
 	bio = bio_map_kern(dev->q, data, rq_len, GFP_KERNEL);
 	if (IS_ERR(bio))
···
 	rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
 	if (!rq_ppas)
 		rq_ppas = pblk->min_write_pgs;
-	rq_len = rq_ppas * geo->sec_size;
+	rq_len = rq_ppas * geo->csecs;
 
 	bio = bio_map_kern(dev->q, data, rq_len, GFP_KERNEL);
 	if (IS_ERR(bio))
···
 	ppa_list = (void *)(meta_list) + pblk_dma_meta_size;
 	dma_ppa_list = dma_meta_list + pblk_dma_meta_size;
 
-	data = kcalloc(pblk->max_write_pgs, geo->sec_size, GFP_KERNEL);
+	data = kcalloc(pblk->max_write_pgs, geo->csecs, GFP_KERNEL);
 	if (!data) {
 		ret = -ENOMEM;
 		goto free_meta_list;

drivers/lightnvm/pblk-rl.c

···
 
 	/* Consider sectors used for metadata */
 	sec_meta = (lm->smeta_sec + lm->emeta_sec[0]) * l_mg->nr_free_lines;
-	blk_meta = DIV_ROUND_UP(sec_meta, geo->sec_per_chk);
+	blk_meta = DIV_ROUND_UP(sec_meta, geo->clba);
 
 	rl->high = pblk->op_blks - blk_meta - lm->blk_per_line;
 	rl->high_pw = get_count_order(rl->high);

drivers/lightnvm/pblk-sysfs.c

···
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_geo *geo = &dev->geo;
+	struct nvm_addrf_12 *ppaf;
+	struct nvm_addrf_12 *geo_ppaf;
 	ssize_t sz = 0;
 
-	sz = snprintf(page, PAGE_SIZE - sz,
+	ppaf = (struct nvm_addrf_12 *)&pblk->ppaf;
+	geo_ppaf = (struct nvm_addrf_12 *)&geo->addrf;
+
+	sz = snprintf(page, PAGE_SIZE,
 		"g:(b:%d)blk:%d/%d,pg:%d/%d,lun:%d/%d,ch:%d/%d,pl:%d/%d,sec:%d/%d\n",
-		pblk->ppaf_bitsize,
-		pblk->ppaf.blk_offset, geo->ppaf.blk_len,
-		pblk->ppaf.pg_offset, geo->ppaf.pg_len,
-		pblk->ppaf.lun_offset, geo->ppaf.lun_len,
-		pblk->ppaf.ch_offset, geo->ppaf.ch_len,
-		pblk->ppaf.pln_offset, geo->ppaf.pln_len,
-		pblk->ppaf.sec_offset, geo->ppaf.sect_len);
+			pblk->ppaf_bitsize,
+			ppaf->blk_offset, ppaf->blk_len,
+			ppaf->pg_offset, ppaf->pg_len,
+			ppaf->lun_offset, ppaf->lun_len,
+			ppaf->ch_offset, ppaf->ch_len,
+			ppaf->pln_offset, ppaf->pln_len,
+			ppaf->sect_offset, ppaf->sect_len);
 
 	sz += snprintf(page + sz, PAGE_SIZE - sz,
 		"d:blk:%d/%d,pg:%d/%d,lun:%d/%d,ch:%d/%d,pl:%d/%d,sec:%d/%d\n",
-		geo->ppaf.blk_offset, geo->ppaf.blk_len,
-		geo->ppaf.pg_offset, geo->ppaf.pg_len,
-		geo->ppaf.lun_offset, geo->ppaf.lun_len,
-		geo->ppaf.ch_offset, geo->ppaf.ch_len,
-		geo->ppaf.pln_offset, geo->ppaf.pln_len,
-		geo->ppaf.sect_offset, geo->ppaf.sect_len);
+			geo_ppaf->blk_offset, geo_ppaf->blk_len,
+			geo_ppaf->pg_offset, geo_ppaf->pg_len,
+			geo_ppaf->lun_offset, geo_ppaf->lun_len,
+			geo_ppaf->ch_offset, geo_ppaf->ch_len,
+			geo_ppaf->pln_offset, geo_ppaf->pln_len,
+			geo_ppaf->sect_offset, geo_ppaf->sect_len);
 
 	return sz;
 }
···
 				"blk_line:%d, sec_line:%d, sec_blk:%d\n",
 					lm->blk_per_line,
 					lm->sec_per_line,
-					geo->sec_per_chk);
+					geo->clba);
 
 	return sz;
 }

drivers/lightnvm/pblk-write.c

···
 	m_ctx = nvm_rq_to_pdu(rqd);
 	m_ctx->private = meta_line;
 
-	rq_len = rq_ppas * geo->sec_size;
+	rq_len = rq_ppas * geo->csecs;
 	data = ((void *)emeta->buf) + emeta->mem;
 
 	bio = pblk_bio_map_addr(pblk, data, rq_ppas, rq_len,

drivers/lightnvm/pblk.h

···
 	unsigned int meta_distance;	/* Distance between data and metadata */
 };
 
-struct pblk_addr_format {
-	u64	ch_mask;
-	u64	lun_mask;
-	u64	pln_mask;
-	u64	blk_mask;
-	u64	pg_mask;
-	u64	sec_mask;
-	u8	ch_offset;
-	u8	lun_offset;
-	u8	pln_offset;
-	u8	blk_offset;
-	u8	pg_offset;
-	u8	sec_offset;
-};
-
 enum {
 	PBLK_STATE_RUNNING = 0,
 	PBLK_STATE_STOPPING = 1,
···
 	struct pblk_line_mgmt l_mg;		/* Line management */
 	struct pblk_line_meta lm;		/* Line metadata */
 
+	struct nvm_addrf ppaf;
 	int ppaf_bitsize;
-	struct pblk_addr_format ppaf;
 
 	struct pblk_rb rwb;
 
···
 	return le32_to_cpu(*line->vsc);
 }
 
-#define NVM_MEM_PAGE_WRITE (8)
-
 static inline int pblk_pad_distance(struct pblk *pblk)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_geo *geo = &dev->geo;
 
-	return NVM_MEM_PAGE_WRITE * geo->all_luns * geo->sec_per_pl;
+	return geo->mw_cunits * geo->all_luns * geo->ws_opt;
 }
 
 static inline int pblk_ppa_to_line(struct ppa_addr p)
···
 static inline struct ppa_addr addr_to_gen_ppa(struct pblk *pblk, u64 paddr,
 					      u64 line_id)
 {
+	struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&pblk->ppaf;
 	struct ppa_addr ppa;
 
 	ppa.ppa = 0;
 	ppa.g.blk = line_id;
-	ppa.g.pg = (paddr & pblk->ppaf.pg_mask) >> pblk->ppaf.pg_offset;
-	ppa.g.lun = (paddr & pblk->ppaf.lun_mask) >> pblk->ppaf.lun_offset;
-	ppa.g.ch = (paddr & pblk->ppaf.ch_mask) >> pblk->ppaf.ch_offset;
-	ppa.g.pl = (paddr & pblk->ppaf.pln_mask) >> pblk->ppaf.pln_offset;
-	ppa.g.sec = (paddr & pblk->ppaf.sec_mask) >> pblk->ppaf.sec_offset;
+	ppa.g.pg = (paddr & ppaf->pg_mask) >> ppaf->pg_offset;
+	ppa.g.lun = (paddr & ppaf->lun_mask) >> ppaf->lun_offset;
+	ppa.g.ch = (paddr & ppaf->ch_mask) >> ppaf->ch_offset;
+	ppa.g.pl = (paddr & ppaf->pln_mask) >> ppaf->pln_offset;
+	ppa.g.sec = (paddr & ppaf->sec_mask) >> ppaf->sect_offset;
 
 	return ppa;
 }
···
 static inline u64 pblk_dev_ppa_to_line_addr(struct pblk *pblk,
 							struct ppa_addr p)
 {
+	struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&pblk->ppaf;
 	u64 paddr;
 
-	paddr = (u64)p.g.pg << pblk->ppaf.pg_offset;
-	paddr |= (u64)p.g.lun << pblk->ppaf.lun_offset;
-	paddr |= (u64)p.g.ch << pblk->ppaf.ch_offset;
-	paddr |= (u64)p.g.pl << pblk->ppaf.pln_offset;
-	paddr |= (u64)p.g.sec << pblk->ppaf.sec_offset;
+	paddr = (u64)p.g.ch << ppaf->ch_offset;
+	paddr |= (u64)p.g.lun << ppaf->lun_offset;
+	paddr |= (u64)p.g.pg << ppaf->pg_offset;
+	paddr |= (u64)p.g.pl << ppaf->pln_offset;
+	paddr |= (u64)p.g.sec << ppaf->sect_offset;
 
 	return paddr;
 }
···
 		ppa64.c.line = ppa32 & ((~0U) >> 1);
 		ppa64.c.is_cached = 1;
 	} else {
-		ppa64.g.blk = (ppa32 & pblk->ppaf.blk_mask) >>
-							pblk->ppaf.blk_offset;
-		ppa64.g.pg = (ppa32 & pblk->ppaf.pg_mask) >>
-							pblk->ppaf.pg_offset;
-		ppa64.g.lun = (ppa32 & pblk->ppaf.lun_mask) >>
-							pblk->ppaf.lun_offset;
-		ppa64.g.ch = (ppa32 & pblk->ppaf.ch_mask) >>
-							pblk->ppaf.ch_offset;
-		ppa64.g.pl = (ppa32 & pblk->ppaf.pln_mask) >>
-							pblk->ppaf.pln_offset;
-		ppa64.g.sec = (ppa32 & pblk->ppaf.sec_mask) >>
-							pblk->ppaf.sec_offset;
+		struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&pblk->ppaf;
+
+		ppa64.g.ch = (ppa32 & ppaf->ch_mask) >> ppaf->ch_offset;
+		ppa64.g.lun = (ppa32 & ppaf->lun_mask) >> ppaf->lun_offset;
+		ppa64.g.blk = (ppa32 & ppaf->blk_mask) >> ppaf->blk_offset;
+		ppa64.g.pg = (ppa32 & ppaf->pg_mask) >> ppaf->pg_offset;
+		ppa64.g.pl = (ppa32 & ppaf->pln_mask) >> ppaf->pln_offset;
+		ppa64.g.sec = (ppa32 & ppaf->sec_mask) >> ppaf->sect_offset;
 	}
 
 	return ppa64;
···
 		ppa32 |= ppa64.c.line;
 		ppa32 |= 1U << 31;
 	} else {
-		ppa32 |= ppa64.g.blk << pblk->ppaf.blk_offset;
-		ppa32 |= ppa64.g.pg << pblk->ppaf.pg_offset;
-		ppa32 |= ppa64.g.lun << pblk->ppaf.lun_offset;
-		ppa32 |= ppa64.g.ch << pblk->ppaf.ch_offset;
-		ppa32 |= ppa64.g.pl << pblk->ppaf.pln_offset;
-		ppa32 |= ppa64.g.sec << pblk->ppaf.sec_offset;
+		struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&pblk->ppaf;
+
+		ppa32 |= ppa64.g.ch << ppaf->ch_offset;
+		ppa32 |= ppa64.g.lun << ppaf->lun_offset;
+		ppa32 |= ppa64.g.blk << ppaf->blk_offset;
+		ppa32 |= ppa64.g.pg << ppaf->pg_offset;
+		ppa32 |= ppa64.g.pl << ppaf->pln_offset;
+		ppa32 |= ppa64.g.sec << ppaf->sect_offset;
 	}
 
 	return ppa32;
···
 		if (!ppa->c.is_cached &&
 				ppa->g.ch < geo->nr_chnls &&
 				ppa->g.lun < geo->nr_luns &&
-				ppa->g.pl < geo->nr_planes &&
+				ppa->g.pl < geo->num_pln &&
 				ppa->g.blk < geo->nr_chks &&
-				ppa->g.pg < geo->ws_per_chk &&
-				ppa->g.sec < geo->sec_per_pg)
+				ppa->g.pg < geo->num_pg &&
+				ppa->g.sec < geo->ws_min)
 			continue;
 
 		print_ppa(ppa, "boundary", i);

drivers/nvme/host/lightnvm.c

···
 	__u8			blk_len;
 	__u8			pg_offset;
 	__u8			pg_len;
-	__u8			sect_offset;
-	__u8			sect_len;
+	__u8			sec_offset;
+	__u8			sec_len;
 	__u8			res[4];
 } __packed;
 
···
 	BUILD_BUG_ON(sizeof(struct nvme_nvm_id20) != NVME_IDENTIFY_DATA_SIZE);
 }
 
-static int init_grp(struct nvm_id *nvm_id, struct nvme_nvm_id12 *id12)
+static void nvme_nvm_set_addr_12(struct nvm_addrf_12 *dst,
+				 struct nvme_nvm_id12_addrf *src)
+{
+	dst->ch_len = src->ch_len;
+	dst->lun_len = src->lun_len;
+	dst->blk_len = src->blk_len;
+	dst->pg_len = src->pg_len;
+	dst->pln_len = src->pln_len;
+	dst->sect_len = src->sec_len;
+
+	dst->ch_offset = src->ch_offset;
+	dst->lun_offset = src->lun_offset;
+	dst->blk_offset = src->blk_offset;
+	dst->pg_offset = src->pg_offset;
+	dst->pln_offset = src->pln_offset;
+	dst->sect_offset = src->sec_offset;
+
+	dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset;
+	dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset;
+	dst->blk_mask = ((1ULL << dst->blk_len) - 1) << dst->blk_offset;
+	dst->pg_mask = ((1ULL << dst->pg_len) - 1) << dst->pg_offset;
+	dst->pln_mask = ((1ULL << dst->pln_len) - 1) << dst->pln_offset;
+	dst->sec_mask = ((1ULL << dst->sect_len) - 1) << dst->sect_offset;
+}
+
+static int nvme_nvm_setup_12(struct nvme_nvm_id12 *id,
+			     struct nvm_geo *geo)
 {
 	struct nvme_nvm_id12_grp *src;
 	int sec_per_pg, sec_per_pl, pg_per_blk;
 
-	if (id12->cgrps != 1)
+	if (id->cgrps != 1)
 		return -EINVAL;
 
-	src = &id12->grp;
+	src = &id->grp;
 
-	nvm_id->mtype = src->mtype;
-	nvm_id->fmtype = src->fmtype;
-
-	nvm_id->num_ch = src->num_ch;
-	nvm_id->num_lun = src->num_lun;
-
-	nvm_id->num_chk = le16_to_cpu(src->num_chk);
-	nvm_id->csecs = le16_to_cpu(src->csecs);
-	nvm_id->sos = le16_to_cpu(src->sos);
-
-	pg_per_blk = le16_to_cpu(src->num_pg);
-	sec_per_pg = le16_to_cpu(src->fpg_sz) / nvm_id->csecs;
-	sec_per_pl = sec_per_pg * src->num_pln;
-	nvm_id->clba = sec_per_pl * pg_per_blk;
-	nvm_id->ws_per_chk = pg_per_blk;
-
-	nvm_id->mpos = le32_to_cpu(src->mpos);
-	nvm_id->cpar = le16_to_cpu(src->cpar);
-	nvm_id->mccap = le32_to_cpu(src->mccap);
-
-	nvm_id->ws_opt = nvm_id->ws_min = sec_per_pg;
-	nvm_id->ws_seq = NVM_IO_SNGL_ACCESS;
-
-	if (nvm_id->mpos & 0x020202) {
-		nvm_id->ws_seq = NVM_IO_DUAL_ACCESS;
-		nvm_id->ws_opt <<= 1;
-	} else if (nvm_id->mpos & 0x040404) {
-		nvm_id->ws_seq = NVM_IO_QUAD_ACCESS;
-		nvm_id->ws_opt <<= 2;
+	if (src->mtype != 0) {
+		pr_err("nvm: memory type not supported\n");
+		return -EINVAL;
 	}
 
-	nvm_id->trdt = le32_to_cpu(src->trdt);
-	nvm_id->trdm = le32_to_cpu(src->trdm);
-	nvm_id->tprt = le32_to_cpu(src->tprt);
-	nvm_id->tprm = le32_to_cpu(src->tprm);
-	nvm_id->tbet = le32_to_cpu(src->tbet);
-	nvm_id->tbem = le32_to_cpu(src->tbem);
+	geo->ver_id = id->ver_id;
+
+	geo->nr_chnls = src->num_ch;
+	geo->nr_luns = src->num_lun;
+	geo->all_luns = geo->nr_chnls * geo->nr_luns;
+
+	geo->nr_chks = le16_to_cpu(src->num_chk);
+
+	geo->csecs = le16_to_cpu(src->csecs);
+	geo->sos = le16_to_cpu(src->sos);
+
+	pg_per_blk = le16_to_cpu(src->num_pg);
+	sec_per_pg = le16_to_cpu(src->fpg_sz) / geo->csecs;
+	sec_per_pl = sec_per_pg * src->num_pln;
+	geo->clba = sec_per_pl * pg_per_blk;
+
+	geo->all_chunks = geo->all_luns * geo->nr_chks;
+	geo->total_secs = geo->clba * geo->all_chunks;
+
+	geo->ws_min = sec_per_pg;
+	geo->ws_opt = sec_per_pg;
+	geo->mw_cunits = geo->ws_opt << 3;	/* default to MLC safe values */
+
+	geo->mccap = le32_to_cpu(src->mccap);
+
+	geo->trdt = le32_to_cpu(src->trdt);
+	geo->trdm = le32_to_cpu(src->trdm);
+	geo->tprt = le32_to_cpu(src->tprt);
+	geo->tprm = le32_to_cpu(src->tprm);
+	geo->tbet = le32_to_cpu(src->tbet);
+	geo->tbem = le32_to_cpu(src->tbem);
 
 	/* 1.2 compatibility */
-	nvm_id->num_pln = src->num_pln;
-	nvm_id->num_pg = le16_to_cpu(src->num_pg);
-	nvm_id->fpg_sz = le16_to_cpu(src->fpg_sz);
+	geo->vmnt = id->vmnt;
+	geo->cap = le32_to_cpu(id->cap);
+	geo->dom = le32_to_cpu(id->dom);
+
+	geo->mtype = src->mtype;
+	geo->fmtype = src->fmtype;
+
+	geo->cpar = le16_to_cpu(src->cpar);
+	geo->mpos = le32_to_cpu(src->mpos);
+
+	geo->plane_mode = NVM_PLANE_SINGLE;
+
+	if (geo->mpos & 0x020202) {
+		geo->plane_mode = NVM_PLANE_DOUBLE;
+		geo->ws_opt <<= 1;
+	} else if (geo->mpos & 0x040404) {
+		geo->plane_mode = NVM_PLANE_QUAD;
+		geo->ws_opt <<= 2;
+	}
+
+	geo->num_pln = src->num_pln;
+	geo->num_pg = le16_to_cpu(src->num_pg);
+	geo->fpg_sz = le16_to_cpu(src->fpg_sz);
+
+	nvme_nvm_set_addr_12((struct nvm_addrf_12 *)&geo->addrf, &id->ppaf);
 
 	return 0;
 }
 
-static int nvme_nvm_setup_12(struct nvm_dev *nvmdev, struct nvm_id *nvm_id,
-		struct nvme_nvm_id12 *id)
+static void nvme_nvm_set_addr_20(struct nvm_addrf *dst,
+				 struct nvme_nvm_id20_addrf *src)
 {
-	nvm_id->ver_id = id->ver_id;
-	nvm_id->vmnt = id->vmnt;
-	nvm_id->cap = le32_to_cpu(id->cap);
-	nvm_id->dom = le32_to_cpu(id->dom);
-	memcpy(&nvm_id->ppaf, &id->ppaf,
-					sizeof(struct nvm_addr_format));
+	dst->ch_len = src->grp_len;
+	dst->lun_len = src->pu_len;
+	dst->chk_len = src->chk_len;
+	dst->sec_len = src->lba_len;
 
-	return init_grp(nvm_id, id);
+	dst->sec_offset = 0;
+	dst->chk_offset = dst->sec_len;
+	dst->lun_offset = dst->chk_offset + dst->chk_len;
+	dst->ch_offset = dst->lun_offset + dst->lun_len;
+
+	dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset;
+	dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset;
+	dst->chk_mask = ((1ULL << dst->chk_len) - 1) << dst->chk_offset;
+	dst->sec_mask = ((1ULL << dst->sec_len) - 1) << dst->sec_offset;
 }
 
-static int nvme_nvm_setup_20(struct nvm_dev *nvmdev, struct nvm_id *nvm_id,
-		struct nvme_nvm_id20 *id)
+static int nvme_nvm_setup_20(struct nvme_nvm_id20 *id,
+			     struct nvm_geo *geo)
 {
-	nvm_id->ver_id = id->mjr;
+	geo->ver_id = id->mjr;
 
-	nvm_id->num_ch = le16_to_cpu(id->num_grp);
-	nvm_id->num_lun = le16_to_cpu(id->num_pu);
-	nvm_id->num_chk = le32_to_cpu(id->num_chk);
-	nvm_id->clba = le32_to_cpu(id->clba);
+	geo->nr_chnls = le16_to_cpu(id->num_grp);
+	geo->nr_luns = le16_to_cpu(id->num_pu);
+	geo->all_luns = geo->nr_chnls * geo->nr_luns;
 
-	nvm_id->ws_min = le32_to_cpu(id->ws_min);
-	nvm_id->ws_opt = le32_to_cpu(id->ws_opt);
-	nvm_id->mw_cunits = le32_to_cpu(id->mw_cunits);
+	geo->nr_chks = le32_to_cpu(id->num_chk);
+	geo->clba = le32_to_cpu(id->clba);
 
-	nvm_id->trdt = le32_to_cpu(id->trdt);
-	nvm_id->trdm = le32_to_cpu(id->trdm);
-	nvm_id->tprt = le32_to_cpu(id->twrt);
-	nvm_id->tprm = le32_to_cpu(id->twrm);
-	nvm_id->tbet = le32_to_cpu(id->tcrst);
-	nvm_id->tbem = le32_to_cpu(id->tcrsm);
+	geo->all_chunks = geo->all_luns * geo->nr_chks;
+	geo->total_secs = geo->clba * geo->all_chunks;
 
-	/* calculated values */
-	nvm_id->ws_per_chk = nvm_id->clba / nvm_id->ws_min;
+	geo->ws_min = le32_to_cpu(id->ws_min);
+	geo->ws_opt = le32_to_cpu(id->ws_opt);
+	geo->mw_cunits = le32_to_cpu(id->mw_cunits);
 
-	/* 1.2 compatibility */
-	nvm_id->ws_seq = NVM_IO_SNGL_ACCESS;
+	geo->trdt = le32_to_cpu(id->trdt);
+	geo->trdm = le32_to_cpu(id->trdm);
+	geo->tprt = le32_to_cpu(id->twrt);
+	geo->tprm = le32_to_cpu(id->twrm);
+	geo->tbet = le32_to_cpu(id->tcrst);
+	geo->tbem = le32_to_cpu(id->tcrsm);
+
+	nvme_nvm_set_addr_20(&geo->addrf, &id->lbaf);
 
 	return 0;
 }
 
-static int nvme_nvm_identity(struct nvm_dev *nvmdev, struct nvm_id *nvm_id)
+static int nvme_nvm_identity(struct nvm_dev *nvmdev)
 {
 	struct nvme_ns *ns = nvmdev->q->queuedata;
 	struct nvme_nvm_id12 *id;
···
 	 */
 	switch (id->ver_id) {
 	case 1:
-		ret = nvme_nvm_setup_12(nvmdev, nvm_id, id);
+		ret = nvme_nvm_setup_12(id, &nvmdev->geo);
 		break;
 	case 2:
-		ret = nvme_nvm_setup_20(nvmdev, nvm_id,
-				(struct nvme_nvm_id20 *)id);
+		ret = nvme_nvm_setup_20((struct nvme_nvm_id20 *)id,
+							&nvmdev->geo);
 		break;
 	default:
-		dev_err(ns->ctrl->device,
-			"OCSSD revision not supported (%d)\n",
-			nvm_id->ver_id);
+		dev_err(ns->ctrl->device, "OCSSD revision not supported (%d)\n",
+							id->ver_id);
 		ret = -EINVAL;
 	}
+
 out:
 	kfree(id);
 	return ret;
···
 	struct nvme_ctrl *ctrl = ns->ctrl;
 	struct nvme_nvm_command c = {};
 	struct nvme_nvm_bb_tbl *bb_tbl;
-	int nr_blks = geo->nr_chks * geo->plane_mode;
+	int nr_blks = geo->nr_chks * geo->num_pln;
 	int tblsz = sizeof(struct nvme_nvm_bb_tbl) + nr_blks;
 	int ret = 0;
 
···
 		goto out;
 	}
 
-	memcpy(blks, bb_tbl->blk, geo->nr_chks * geo->plane_mode);
+	memcpy(blks, bb_tbl->blk, geo->nr_chks * geo->num_pln);
 out:
 	kfree(bb_tbl);
 	return ret;
···
 void nvme_nvm_update_nvm_info(struct nvme_ns *ns)
 {
 	struct nvm_dev *ndev = ns->ndev;
+	struct nvm_geo *geo = &ndev->geo;
 
-	ndev->identity.csecs = ndev->geo.sec_size = 1 << ns->lba_shift;
-	ndev->identity.sos = ndev->geo.oob_size = ns->ms;
+	geo->csecs = 1 << ns->lba_shift;
+	geo->sos = ns->ms;
 }
 
 int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node)
···
 {
 	struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
 	struct nvm_dev *ndev = ns->ndev;
-	struct nvm_id *id;
+	struct nvm_geo *geo = &ndev->geo;
 	struct attribute *attr;
 
 	if (!ndev)
 		return 0;
 
-	id = &ndev->identity;
 	attr = &dattr->attr;
 
 	if (strcmp(attr->name, "version") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->ver_id);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->ver_id);
 	} else if (strcmp(attr->name, "capabilities") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->cap);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->cap);
 	} else if (strcmp(attr->name, "read_typ") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->trdt);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdt);
 	} else if (strcmp(attr->name, "read_max") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->trdm);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdm);
 	} else {
 		return scnprintf(page,
 				 PAGE_SIZE,
···
 	}
 }
 
+static ssize_t nvm_dev_attr_show_ppaf(struct nvm_addrf_12 *ppaf, char *page)
+{
+	return scnprintf(page, PAGE_SIZE,
+		"0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
+				ppaf->ch_offset, ppaf->ch_len,
+				ppaf->lun_offset, ppaf->lun_len,
+				ppaf->pln_offset, ppaf->pln_len,
+				ppaf->blk_offset, ppaf->blk_len,
+				ppaf->pg_offset, ppaf->pg_len,
+				ppaf->sect_offset, ppaf->sect_len);
+}
+
 static ssize_t nvm_dev_attr_show_12(struct device *dev,
 		struct device_attribute *dattr, char *page)
 {
 	struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
 	struct nvm_dev *ndev = ns->ndev;
-	struct nvm_id *id;
+	struct nvm_geo *geo = &ndev->geo;
 	struct attribute *attr;
 
 	if (!ndev)
 		return 0;
 
-	id = &ndev->identity;
 	attr = &dattr->attr;
 
 	if (strcmp(attr->name, "vendor_opcode") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->vmnt);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->vmnt);
 	} else if (strcmp(attr->name, "device_mode") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->dom);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->dom);
 	/* kept for compatibility */
 	} else if (strcmp(attr->name, "media_manager") == 0) {
 		return scnprintf(page, PAGE_SIZE, "%s\n", "gennvm");
 	} else if (strcmp(attr->name, "ppa_format") == 0) {
-		return scnprintf(page, PAGE_SIZE,
-			"0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
-			id->ppaf.ch_offset, id->ppaf.ch_len,
-			id->ppaf.lun_offset, id->ppaf.lun_len,
-			id->ppaf.pln_offset, id->ppaf.pln_len,
-			id->ppaf.blk_offset, id->ppaf.blk_len,
-			id->ppaf.pg_offset, id->ppaf.pg_len,
-			id->ppaf.sect_offset, id->ppaf.sect_len);
+		return nvm_dev_attr_show_ppaf((void *)&geo->addrf, page);
 	} else if (strcmp(attr->name, "media_type") == 0) {	/* u8 */
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->mtype);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->mtype);
 	} else if (strcmp(attr->name, "flash_media_type") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->fmtype);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->fmtype);
 	} else if (strcmp(attr->name, "num_channels") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->num_ch);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->nr_chnls);
 	} else if (strcmp(attr->name, "num_luns") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->num_lun);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->nr_luns);
 	} else if (strcmp(attr->name, "num_planes") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->num_pln);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pln);
 	} else if (strcmp(attr->name, "num_blocks") == 0) {	/* u16 */
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->num_chk);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->nr_chks);
 	} else if (strcmp(attr->name, "num_pages") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->num_pg);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pg);
 	} else if (strcmp(attr->name, "page_size") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->fpg_sz);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->fpg_sz);
 	} else if (strcmp(attr->name, "hw_sector_size") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->csecs);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->csecs);
 	} else if (strcmp(attr->name, "oob_sector_size") == 0) {/* u32 */
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->sos);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->sos);
 	} else if (strcmp(attr->name, "prog_typ") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->tprt);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt);
 	} else if (strcmp(attr->name, "prog_max") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->tprm);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm);
 	} else if (strcmp(attr->name, "erase_typ") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->tbet);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet);
 	} else if (strcmp(attr->name, "erase_max") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->tbem);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem);
 	} else if (strcmp(attr->name, "multiplane_modes") == 0) {
-		return scnprintf(page, PAGE_SIZE, "0x%08x\n", id->mpos);
+		return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mpos);
 	} else if (strcmp(attr->name, "media_capabilities") == 0) {
-		return scnprintf(page, PAGE_SIZE, "0x%08x\n", id->mccap);
+		return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mccap);
 	} else if (strcmp(attr->name, "max_phys_secs") == 0) {
 		return scnprintf(page, PAGE_SIZE, "%u\n", NVM_MAX_VLBA);
 	} else {
-		return scnprintf(page,
-				 PAGE_SIZE,
-				 "Unhandled attr(%s) in `nvm_dev_attr_show_12`\n",
-				 attr->name);
+		return scnprintf(page, PAGE_SIZE,
+			"Unhandled attr(%s) in `nvm_dev_attr_show_12`\n",
+			attr->name);
 	}
 }
 
···
 {
 	struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
 	struct nvm_dev *ndev = ns->ndev;
-	struct nvm_id *id;
+	struct nvm_geo *geo = &ndev->geo;
 	struct attribute *attr;
 
 	if (!ndev)
 		return 0;
 
-	id = &ndev->identity;
 	attr = &dattr->attr;
 
 	if (strcmp(attr->name, "groups") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->num_ch);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->nr_chnls);
 	} else if (strcmp(attr->name, "punits") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->num_lun);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->nr_luns);
 	} else if (strcmp(attr->name, "chunks") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->num_chk);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->nr_chks);
 	} else if (strcmp(attr->name, "clba") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->clba);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->clba);
 	} else if (strcmp(attr->name, "ws_min") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->ws_min);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_min);
 	} else if (strcmp(attr->name, "ws_opt") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->ws_opt);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_opt);
 	} else if (strcmp(attr->name, "mw_cunits") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->mw_cunits);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->mw_cunits);
 	} else if (strcmp(attr->name, "write_typ") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->tprt);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt);
 	} else if (strcmp(attr->name, "write_max") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->tprm);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm);
 	} else if (strcmp(attr->name, "reset_typ") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->tbet);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet);
 	} else if (strcmp(attr->name, "reset_max") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", id->tbem);
+		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem);
 	} else {
-		return scnprintf(page,
-				 PAGE_SIZE,
-				 "Unhandled attr(%s) in `nvm_dev_attr_show_20`\n",
-				 attr->name);
+		return scnprintf(page, PAGE_SIZE,
+			"Unhandled attr(%s) in `nvm_dev_attr_show_20`\n",
+			attr->name);
 	}
 }
 
···
 
 int nvme_nvm_register_sysfs(struct nvme_ns *ns)
 {
-	if (!ns->ndev)
+	struct nvm_dev *ndev = ns->ndev;
+	struct nvm_geo *geo = &ndev->geo;
+
+	if (!ndev)
 		return -EINVAL;
 
-	switch (ns->ndev->identity.ver_id) {
+	switch (geo->ver_id) {
 	case 1:
 		return sysfs_create_group(&disk_to_dev(ns->disk)->kobj,
 					&nvm_dev_attr_group_12);
···
 
 void nvme_nvm_unregister_sysfs(struct nvme_ns *ns)
 {
-	switch (ns->ndev->identity.ver_id) {
+	struct nvm_dev *ndev = ns->ndev;
+	struct nvm_geo *geo = &ndev->geo;
+
+	switch (geo->ver_id) {
 	case 1:
 		sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
 					&nvm_dev_attr_group_12);

include/linux/lightnvm.h

···
 struct nvm_dev;
 struct nvm_tgt_dev;
 
-typedef int (nvm_id_fn)(struct nvm_dev *, struct nvm_id *);
+typedef int (nvm_id_fn)(struct nvm_dev *);
 typedef int (nvm_op_bb_tbl_fn)(struct nvm_dev *, struct ppa_addr, u8 *);
 typedef int (nvm_op_set_bb_fn)(struct nvm_dev *, struct ppa_addr *, int, int);
 typedef int (nvm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *);
···
 	struct nvm_id_lp_mlc mlc;
 };
 
-struct nvm_addr_format {
-	u8	ch_offset;
+struct nvm_addrf_12 {
 	u8	ch_len;
-	u8	lun_offset;
 	u8	lun_len;
-	u8	pln_offset;
-	u8	pln_len;
-	u8	blk_offset;
 	u8	blk_len;
-	u8	pg_offset;
 	u8	pg_len;
-	u8	sect_offset;
+	u8	pln_len;
 	u8	sect_len;
+
+	u8	ch_offset;
+	u8	lun_offset;
+	u8	blk_offset;
+	u8	pg_offset;
+	u8	pln_offset;
+	u8	sect_offset;
+
+	u64	ch_mask;
+	u64	lun_mask;
+	u64	blk_mask;
+	u64	pg_mask;
+	u64	pln_mask;
+	u64	sec_mask;
 };
 
-struct nvm_id {
-	u8	ver_id;
-	u8	vmnt;
-	u32	cap;
-	u32	dom;
+struct nvm_addrf {
+	u8	ch_len;
+	u8	lun_len;
+	u8	chk_len;
+	u8	sec_len;
+	u8	rsv_len[2];
 
-	struct	nvm_addr_format ppaf;
+	u8	ch_offset;
+	u8	lun_offset;
+	u8	chk_offset;
+	u8	sec_offset;
+	u8	rsv_off[2];
 
-	u8	num_ch;
-	u8	num_lun;
-	u16	num_chk;
-	u16	clba;
-	u16	csecs;
-	u16	sos;
-
-	u32	ws_min;
-	u32	ws_opt;
-	u32	mw_cunits;
-
-	u32	trdt;
-	u32	trdm;
-	u32	tprt;
-	u32	tprm;
-	u32	tbet;
-	u32	tbem;
-	u32	mpos;
-	u32	mccap;
-	u16	cpar;
-
-	/* calculated values */
-	u16	ws_seq;
-	u16	ws_per_chk;
-
-	/* 1.2 compatibility */
-	u8	mtype;
-	u8	fmtype;
-
-	u8	num_pln;
-	u16	num_pg;
-	u16	fpg_sz;
-} __packed;
+	u64	ch_mask;
+	u64	lun_mask;
+	u64	chk_mask;
+	u64	sec_mask;
+	u64	rsv_mask[2];
+};
 
 struct nvm_target {
 	struct list_head list;
···
 	NVM_BLK_ST_BAD =	0x8,	/* Bad block */
 };
 
-
-/* Device generic information */
+/* Instance geometry */
 struct nvm_geo {
-	/* generic geometry */
+	/* device reported version */
+	u8	ver_id;
+
+	/* instance specific geometry */
 	int nr_chnls;
-	int all_luns; /* across channels */
-	int nr_luns; /* per channel */
-	int nr_chks; /* per lun */
+	int nr_luns;		/* per channel */
 
-	int sec_size;
-	int oob_size;
-	int mccap;
+	/* calculated values */
+	int all_luns;		/* across channels */
+	int all_chunks;		/* across channels */
 
-	int sec_per_chk;
-	int sec_per_lun;
+	int op;			/* over-provision in instance */
 
-	int ws_min;
-	int ws_opt;
-	int ws_seq;
-	int ws_per_chk;
+	sector_t total_secs;	/* across channels */
 
-	int op;
+	/* chunk geometry */
+	u32	nr_chks;	/* chunks per lun */
+	u32	clba;		/* sectors per chunk */
+	u16	csecs;		/* sector size */
+	u16	sos;		/* out-of-band area size */
 
-	struct nvm_addr_format ppaf;
+	/* device write constrains */
+	u32	ws_min;		/* minimum write size */
+	u32	ws_opt;		/* optimal write size */
+	u32	mw_cunits;	/* distance required for successful read */
 
-	/* Legacy 1.2 specific geometry */
-	int plane_mode; /* drive device in single, double or quad mode */
-	int nr_planes;
-	int sec_per_pg; /* only sectors for a single page */
-	int sec_per_pl; /* all sectors across planes */
+	/* device capabilities */
+	u32	mccap;
+
+	/* device timings */
+	u32	trdt;		/* Avg. Tread (ns) */
+	u32	trdm;		/* Max Tread (ns) */
+	u32	tprt;		/* Avg. Tprog (ns) */
+	u32	tprm;		/* Max Tprog (ns) */
+	u32	tbet;		/* Avg. Terase (ns) */
+	u32	tbem;		/* Max Terase (ns) */
+
+	/* generic address format */
+	struct nvm_addrf addrf;
+
+	/* 1.2 compatibility */
+	u8	vmnt;
+	u32	cap;
+	u32	dom;
+
+	u8	mtype;
+	u8	fmtype;
+
+	u16	cpar;
+	u32	mpos;
+
+	u8	num_pln;
+	u8	plane_mode;
+	u16	num_pg;
+	u16	fpg_sz;
 };
 
 /* sub-device structure */
···
 	/* Base ppas for target LUNs */
 	struct ppa_addr *luns;
 
-	sector_t total_secs;
-
-	struct nvm_id identity;
 	struct request_queue *q;
 
 	struct nvm_dev *parent;
···
 	/* Device information */
 	struct nvm_geo geo;
 
-	unsigned long total_secs;
-
 	unsigned long *lun_map;
 	void *dma_pool;
-
-	struct nvm_id identity;
 
 	/* Backend device */
 	struct request_queue *q;
···
 						  struct ppa_addr r)
 {
 	struct nvm_geo *geo = &tgt_dev->geo;
+	struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&geo->addrf;
 	struct ppa_addr l;
 
-	l.ppa = ((u64)r.g.blk) << geo->ppaf.blk_offset;
-	l.ppa |= ((u64)r.g.pg) << geo->ppaf.pg_offset;
-	l.ppa |= ((u64)r.g.sec) << geo->ppaf.sect_offset;
-	l.ppa |= ((u64)r.g.pl) << geo->ppaf.pln_offset;
-	l.ppa |= ((u64)r.g.lun) << geo->ppaf.lun_offset;
-	l.ppa |= ((u64)r.g.ch) << geo->ppaf.ch_offset;
+	l.ppa = ((u64)r.g.ch) << ppaf->ch_offset;
+	l.ppa |= ((u64)r.g.lun) << ppaf->lun_offset;
+	l.ppa |= ((u64)r.g.blk) << ppaf->blk_offset;
+	l.ppa |= ((u64)r.g.pg) << ppaf->pg_offset;
+	l.ppa |= ((u64)r.g.pl) << ppaf->pln_offset;
+	l.ppa |= ((u64)r.g.sec) << ppaf->sect_offset;
 
 	return l;
 }
···
 						  struct ppa_addr r)
 {
 	struct nvm_geo *geo = &tgt_dev->geo;
+	struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&geo->addrf;
 	struct ppa_addr l;
 
 	l.ppa = 0;
-	/*
-	 * (r.ppa << X offset) & X len bitmask. X eq. blk, pg, etc.
-	 */
-	l.g.blk = (r.ppa >> geo->ppaf.blk_offset) &
-					(((1 << geo->ppaf.blk_len) - 1));
-	l.g.pg |= (r.ppa >> geo->ppaf.pg_offset) &
-					(((1 << geo->ppaf.pg_len) - 1));
-	l.g.sec |= (r.ppa >> geo->ppaf.sect_offset) &
-					(((1 << geo->ppaf.sect_len) - 1));
-	l.g.pl |= (r.ppa >> geo->ppaf.pln_offset) &
-					(((1 << geo->ppaf.pln_len) - 1));
-	l.g.lun |= (r.ppa >> geo->ppaf.lun_offset) &
-					(((1 << geo->ppaf.lun_len) - 1));
-	l.g.ch |= (r.ppa >> geo->ppaf.ch_offset) &
-					(((1 << geo->ppaf.ch_len) - 1));
+
+	l.g.ch = (r.ppa & ppaf->ch_mask) >> ppaf->ch_offset;
+	l.g.lun = (r.ppa & ppaf->lun_mask) >> ppaf->lun_offset;
+	l.g.blk = (r.ppa & ppaf->blk_mask) >> ppaf->blk_offset;
+	l.g.pg = (r.ppa & ppaf->pg_mask) >> ppaf->pg_offset;
+	l.g.pl = (r.ppa & ppaf->pln_mask) >> ppaf->pln_offset;
+	l.g.sec = (r.ppa & ppaf->sec_mask) >> ppaf->sect_offset;
 
 	return l;
 }