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 <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/lightnvm/core.c

@@ -155,7 +155,7 @@ static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
 	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;
@@ -215,18 +215,23 @@ static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
 	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;
@@ -296,8 +301,6 @@ static int __nvm_config_simple(struct nvm_dev *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;
@@ -311,7 +314,7 @@ static int __nvm_config_extended(struct nvm_dev *dev,
 		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)
@@ -406,7 +409,7 @@ 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);
@@ -841,40 +844,9 @@ EXPORT_SYMBOL(nvm_get_tgt_bb_tbl);
 
 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)
@@ -913,16 +885,14 @@ static int nvm_init(struct nvm_dev *dev)
 	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) {
@@ -930,10 +900,10 @@ static int nvm_init(struct nvm_dev *dev)
 		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

@@ -613,7 +613,7 @@ static int pblk_line_submit_emeta_io(struct pblk *pblk, struct pblk_line *line,
 	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);
@@ -722,7 +722,7 @@ u64 pblk_line_smeta_start(struct pblk *pblk, struct pblk_line *line)
 	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,
@@ -1034,17 +1034,17 @@ static int pblk_line_init_bb(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;
@@ -1063,10 +1063,10 @@ static int pblk_line_init_bb(struct pblk *pblk, struct pblk_line *line,
 	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

@@ -88,7 +88,7 @@ static void pblk_gc_line_ws(struct work_struct *work)
 
 	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

@@ -179,7 +179,7 @@ static int pblk_rwb_init(struct pblk *pblk)
 		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);
 }
@@ -187,18 +187,10 @@ static int pblk_rwb_init(struct pblk *pblk)
 /* 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);
@@ -206,34 +198,50 @@ static int pblk_set_ppaf(struct pblk *pblk)
 		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;
-
-	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;
-
-	pblk->ppaf_bitsize = pblk->ppaf.blk_offset + ppaf.blk_len;
+	dst->lun_len = power_len;
+
+	dst->blk_len = src->blk_len;
+	dst->pg_len = src->pg_len;
+	dst->pln_len = src->pln_len;
+	dst->sect_len = src->sect_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;
 }
@@ -303,10 +311,9 @@ static int pblk_core_init(struct pblk *pblk)
 	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);
@@ -583,18 +590,18 @@ static unsigned int calc_emeta_len(struct pblk *pblk)
 	/* 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);
 
@@ -625,13 +632,13 @@ static void pblk_set_provision(struct pblk *pblk, long nr_free_blks)
 	 * 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);
@@ -783,7 +790,7 @@ static int pblk_line_meta_init(struct pblk *pblk)
 	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);
@@ -797,8 +804,8 @@ static int pblk_line_meta_init(struct pblk *pblk)
 	 */
 	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) {
@@ -811,8 +818,8 @@ static int pblk_line_meta_init(struct pblk *pblk)
 	 */
 	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]) {
@@ -825,7 +832,7 @@ static int pblk_line_meta_init(struct pblk *pblk)
 	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",
@@ -1009,9 +1016,9 @@ static void *pblk_init(struct nvm_tgt_dev *dev, struct gendisk *tdisk,
 	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);
 	}
 
@@ -1093,7 +1100,7 @@ static void *pblk_init(struct nvm_tgt_dev *dev, struct gendisk *tdisk,
 
 	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

@@ -563,7 +563,7 @@ int pblk_submit_read_gc(struct pblk *pblk, struct pblk_gc_rq *gc_rq)
 	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

@@ -184,7 +184,7 @@ static int pblk_calc_sec_in_line(struct pblk *pblk, struct pblk_line *line)
 	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 {
@@ -232,7 +232,7 @@ static int pblk_recov_read_oob(struct pblk *pblk, struct pblk_line *line,
 	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))
@@ -351,7 +351,7 @@ static int pblk_recov_pad_oob(struct pblk *pblk, struct pblk_line *line,
 	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;
@@ -368,7 +368,7 @@ static int pblk_recov_pad_oob(struct pblk *pblk, struct pblk_line *line,
 		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) {
@@ -509,7 +509,7 @@ static int pblk_recov_scan_all_oob(struct pblk *pblk, struct pblk_line *line,
 	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))
@@ -640,7 +640,7 @@ static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line,
 	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))
@@ -745,7 +745,7 @@ static int pblk_recov_l2p_from_oob(struct pblk *pblk, struct pblk_line *line)
 	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

@@ -200,7 +200,7 @@ void pblk_rl_init(struct pblk_rl *rl, int budget)
 
 	/* 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

@@ -113,26 +113,31 @@ static ssize_t pblk_sysfs_ppaf(struct pblk *pblk, char *page)
 {
 	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;
 }
@@ -288,7 +293,7 @@ static ssize_t pblk_sysfs_lines_info(struct pblk *pblk, char *page)
 				"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

@@ -333,7 +333,7 @@ int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line)
 	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

@@ -551,21 +551,6 @@ struct pblk_line_meta {
 	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,
@@ -585,8 +570,8 @@ struct pblk {
 	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;
 
@@ -941,14 +926,12 @@ static inline int pblk_line_vsc(struct pblk_line *line)
 	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)
@@ -964,15 +947,16 @@ static inline int pblk_ppa_to_pos(struct nvm_geo *geo, 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;
 }
@@ -980,13 +964,14 @@ static inline struct ppa_addr addr_to_gen_ppa(struct pblk *pblk, u64 paddr,
 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;
 }
@@ -1003,18 +988,14 @@ static inline struct ppa_addr pblk_ppa32_to_ppa64(struct pblk *pblk, u32 ppa32)
 		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;
@@ -1030,12 +1011,14 @@ static inline u32 pblk_ppa64_to_ppa32(struct pblk *pblk, struct ppa_addr 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;
@@ -1229,10 +1212,10 @@ static inline int pblk_boundary_ppa_checks(struct nvm_tgt_dev *tgt_dev,
 		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);

include/linux/lightnvm.h

@@ -50,7 +50,7 @@ struct nvm_id;
 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 *);
@@ -152,62 +152,48 @@ struct nvm_id_lp_tbl {
 	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;
-};
-
-struct nvm_id {
-	u8	ver_id;
-	u8	vmnt;
-	u32	cap;
-	u32	dom;
 
-	struct	nvm_addr_format ppaf;
-
-	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;
+	u8	ch_offset;
+	u8	lun_offset;
+	u8	blk_offset;
+	u8	pg_offset;
+	u8	pln_offset;
+	u8	sect_offset;
 
-	/* calculated values */
-	u16	ws_seq;
-	u16	ws_per_chk;
+	u64	ch_mask;
+	u64	lun_mask;
+	u64	blk_mask;
+	u64	pg_mask;
+	u64	pln_mask;
+	u64	sec_mask;
+};
 
-	/* 1.2 compatibility */
-	u8	mtype;
-	u8	fmtype;
+struct nvm_addrf {
+	u8	ch_len;
+	u8	lun_len;
+	u8	chk_len;
+	u8	sec_len;
+	u8	rsv_len[2];
 
-	u8	num_pln;
-	u16	num_pg;
-	u16	fpg_sz;
-} __packed;
+	u8	ch_offset;
+	u8	lun_offset;
+	u8	chk_offset;
+	u8	sec_offset;
+	u8	rsv_off[2];
+
+	u64	ch_mask;
+	u64	lun_mask;
+	u64	chk_mask;
+	u64	sec_mask;
+	u64	rsv_mask[2];
+};
 
 struct nvm_target {
 	struct list_head list;
@@ -274,36 +260,63 @@ enum {
 	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 op;			/* over-provision in instance */
+
+	sector_t total_secs;	/* across channels */
+
+	/* chunk geometry */
+	u32	nr_chks;	/* chunks per lun */
+	u32	clba;		/* sectors per chunk */
+	u16	csecs;		/* sector size */
+	u16	sos;		/* out-of-band area size */
 
-	int sec_per_chk;
-	int sec_per_lun;
+	/* device write constrains */
+	u32	ws_min;		/* minimum write size */
+	u32	ws_opt;		/* optimal write size */
+	u32	mw_cunits;	/* distance required for successful read */
 
-	int ws_min;
-	int ws_opt;
-	int ws_seq;
-	int ws_per_chk;
+	/* device capabilities */
+	u32	mccap;
 
-	int op;
+	/* 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) */
 
-	struct nvm_addr_format ppaf;
+	/* generic address format */
+	struct nvm_addrf addrf;
 
-	/* 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 */
+	/* 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 */
@@ -314,9 +327,6 @@ struct nvm_tgt_dev {
 	/* 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;
@@ -331,13 +341,9 @@ struct nvm_dev {
 	/* 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;
 	char name[DISK_NAME_LEN];
@@ -357,14 +363,15 @@ static inline struct ppa_addr generic_to_dev_addr(struct nvm_tgt_dev *tgt_dev,
 						  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;
 }
@@ -373,24 +380,17 @@ static inline struct ppa_addr dev_to_generic_addr(struct nvm_tgt_dev *tgt_dev,
 						  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;
 }