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Subject: Re: [PATCH 01/20] lightnvm: simplify geometry structure.
To:     Javier Gonzalez <javier@cnexlabs.com>
Cc:     "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>
References: <1519205218-26994-1-git-send-email-javier@cnexlabs.com>
 <1519205218-26994-2-git-send-email-javier@cnexlabs.com>
 <a2536c29-4e04-9b85-adb9-a014feb06cfd@lightnvm.io>
 <C2488688-5E97-4D50-AF3E-1737BC4EC2B4@cnexlabs.com>
From:   =?UTF-8?Q?Matias_Bj=c3=b8rling?= <mb@lightnvm.io>
Message-ID: <08e61d0d-d5ee-3f67-ec31-8dd6d97ec0f0@lightnvm.io>
Date:   Thu, 22 Feb 2018 13:22:42 +0100
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On 02/22/2018 08:44 AM, Javier Gonzalez wrote:
> 
>> On 22 Feb 2018, at 08.25, Matias Bjørling <mb@lightnvm.io> wrote:
>>
>> On 02/21/2018 10:26 AM, Javier González wrote:
>>> 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 two base structures:
>>> nvm_dev_geo, which describes the geometry of the whole device and
>>> nvm_geo, which describes the geometry of the instance. Since these share
>>> a big part of the geometry, create a nvm_common_geo structure that keeps
>>> the static geoometry values that are shared across instances.
>>> As we introduce support for 2.0, these structures allow to abstract
>>> spec. specific values and present a common geometry to targets.
>>> Signed-off-by: Javier González <javier@cnexlabs.com>
>>> ---
>>>   drivers/lightnvm/core.c          | 137 +++++++---------
>>>   drivers/lightnvm/pblk-core.c     |  16 +-
>>>   drivers/lightnvm/pblk-gc.c       |   2 +-
>>>   drivers/lightnvm/pblk-init.c     | 123 +++++++-------
>>>   drivers/lightnvm/pblk-read.c     |   2 +-
>>>   drivers/lightnvm/pblk-recovery.c |  14 +-
>>>   drivers/lightnvm/pblk-rl.c       |   2 +-
>>>   drivers/lightnvm/pblk-sysfs.c    |  39 +++--
>>>   drivers/lightnvm/pblk-write.c    |   2 +-
>>>   drivers/lightnvm/pblk.h          |  93 +++++------
>>>   drivers/nvme/host/lightnvm.c     | 339 +++++++++++++++++++++++----------------
>>>   include/linux/lightnvm.h         | 204 ++++++++++++-----------
>>>   12 files changed, 514 insertions(+), 459 deletions(-)
>>> diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
>>> index 689c97b97775..42596afdf64c 100644
>>> --- a/drivers/lightnvm/core.c
>>> +++ b/drivers/lightnvm/core.c
>>> @@ -111,6 +111,7 @@ static void nvm_release_luns_err(struct nvm_dev *dev, int lun_begin,
>>>   static void nvm_remove_tgt_dev(struct nvm_tgt_dev *tgt_dev, int clear)
>>>   {
>>>   	struct nvm_dev *dev = tgt_dev->parent;
>>> +	struct nvm_dev_geo *dev_geo = &dev->dev_geo;
>>>   	struct nvm_dev_map *dev_map = tgt_dev->map;
>>>   	int i, j;
>>>   @@ -122,7 +123,7 @@ static void nvm_remove_tgt_dev(struct nvm_tgt_dev *tgt_dev, int clear)
>>>   		if (clear) {
>>>   			for (j = 0; j < ch_map->nr_luns; j++) {
>>>   				int lun = j + lun_offs[j];
>>> -				int lunid = (ch * dev->geo.nr_luns) + lun;
>>> +				int lunid = (ch * dev_geo->nr_luns) + lun;
>>>     				WARN_ON(!test_and_clear_bit(lunid,
>>>   							dev->lun_map));
>>> @@ -143,19 +144,20 @@ static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
>>>   					      u16 lun_begin, u16 lun_end,
>>>   					      u16 op)
>>>   {
>>> +	struct nvm_dev_geo *dev_geo = &dev->dev_geo;
>>>   	struct nvm_tgt_dev *tgt_dev = NULL;
>>>   	struct nvm_dev_map *dev_rmap = dev->rmap;
>>>   	struct nvm_dev_map *dev_map;
>>>   	struct ppa_addr *luns;
>>>   	int nr_luns = lun_end - lun_begin + 1;
>>>   	int luns_left = nr_luns;
>>> -	int nr_chnls = nr_luns / dev->geo.nr_luns;
>>> -	int nr_chnls_mod = nr_luns % dev->geo.nr_luns;
>>> -	int bch = lun_begin / dev->geo.nr_luns;
>>> -	int blun = lun_begin % dev->geo.nr_luns;
>>> +	int nr_chnls = nr_luns / dev_geo->nr_luns;
>>> +	int nr_chnls_mod = nr_luns % dev_geo->nr_luns;
>>> +	int bch = lun_begin / dev_geo->nr_luns;
>>> +	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;
>>> @@ -173,15 +175,15 @@ static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
>>>   	if (!luns)
>>>   		goto err_luns;
>>>   -	prev_nr_luns = (luns_left > dev->geo.nr_luns) ?
>>> -					dev->geo.nr_luns : luns_left;
>>> +	prev_nr_luns = (luns_left > dev_geo->nr_luns) ?
>>> +					dev_geo->nr_luns : luns_left;
>>>   	for (i = 0; i < nr_chnls; i++) {
>>>   		struct nvm_ch_map *ch_rmap = &dev_rmap->chnls[i + bch];
>>>   		int *lun_roffs = ch_rmap->lun_offs;
>>>   		struct nvm_ch_map *ch_map = &dev_map->chnls[i];
>>>   		int *lun_offs;
>>> -		int luns_in_chnl = (luns_left > dev->geo.nr_luns) ?
>>> -					dev->geo.nr_luns : luns_left;
>>> +		int luns_in_chnl = (luns_left > dev_geo->nr_luns) ?
>>> +					dev_geo->nr_luns : luns_left;
>>>     		if (lun_balanced && prev_nr_luns != luns_in_chnl)
>>>   			lun_balanced = 0;
>>> @@ -215,18 +217,22 @@ static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
>>>   	if (!tgt_dev)
>>>   		goto err_ch;
>>>   -	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->c.num_chk;
>>> +
>>>   	tgt_dev->geo.op = op;
>>> -	tgt_dev->total_secs = nr_luns * tgt_dev->geo.sec_per_lun;
>>> +
>>> +	sec_per_lun = dev_geo->c.clba * dev_geo->c.num_chk;
>>> +	tgt_dev->geo.total_secs = nr_luns * sec_per_lun;
>>> +
>>> +	tgt_dev->geo.c = dev_geo->c;
>>> +
>>>   	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;
>>> @@ -268,12 +274,12 @@ static struct nvm_tgt_type *nvm_find_target_type(const char *name)
>>>   	return tt;
>>>   }
>>>   -static int nvm_config_check_luns(struct nvm_geo *geo, int lun_begin,
>>> +static int nvm_config_check_luns(struct nvm_dev_geo *dev_geo, int lun_begin,
>>>   				 int lun_end)
>>>   {
>>> -	if (lun_begin > lun_end || lun_end >= geo->all_luns) {
>>> +	if (lun_begin > lun_end || lun_end >= dev_geo->all_luns) {
>>>   		pr_err("nvm: lun out of bound (%u:%u > %u)\n",
>>> -			lun_begin, lun_end, geo->all_luns - 1);
>>> +			lun_begin, lun_end, dev_geo->all_luns - 1);
>>>   		return -EINVAL;
>>>   	}
>>>   @@ -283,24 +289,24 @@ static int nvm_config_check_luns(struct nvm_geo *geo, int lun_begin,
>>>   static int __nvm_config_simple(struct nvm_dev *dev,
>>>   			       struct nvm_ioctl_create_simple *s)
>>>   {
>>> -	struct nvm_geo *geo = &dev->geo;
>>> +	struct nvm_dev_geo *dev_geo = &dev->dev_geo;
>>>     	if (s->lun_begin == -1 && s->lun_end == -1) {
>>>   		s->lun_begin = 0;
>>> -		s->lun_end = geo->all_luns - 1;
>>> +		s->lun_end = dev_geo->all_luns - 1;
>>>   	}
>>>   -	return nvm_config_check_luns(geo, s->lun_begin, s->lun_end);
>>> +	return nvm_config_check_luns(dev_geo, s->lun_begin, s->lun_end);
>>>   }
>>>     static int __nvm_config_extended(struct nvm_dev *dev,
>>>   				 struct nvm_ioctl_create_extended *e)
>>>   {
>>> -	struct nvm_geo *geo = &dev->geo;
>>> +	struct nvm_dev_geo *dev_geo = &dev->dev_geo;
>>>     	if (e->lun_begin == 0xFFFF && e->lun_end == 0xFFFF) {
>>>   		e->lun_begin = 0;
>>> -		e->lun_end = dev->geo.all_luns - 1;
>>> +		e->lun_end = dev_geo->all_luns - 1;
>>>   	}
>>>     	/* op not set falls into target's default */
>>> @@ -313,7 +319,7 @@ 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)
>>> @@ -408,7 +414,7 @@ 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->dev_geo.c.csecs >> 9) * NVM_MAX_VLBA);
>>>     	set_capacity(tdisk, tt->capacity(targetdata));
>>>   	add_disk(tdisk);
>>> @@ -497,6 +503,7 @@ static int nvm_remove_tgt(struct nvm_dev *dev, struct nvm_ioctl_remove *remove)
>>>     static int nvm_register_map(struct nvm_dev *dev)
>>>   {
>>> +	struct nvm_dev_geo *dev_geo = &dev->dev_geo;
>>>   	struct nvm_dev_map *rmap;
>>>   	int i, j;
>>>   @@ -504,15 +511,15 @@ static int nvm_register_map(struct nvm_dev *dev)
>>>   	if (!rmap)
>>>   		goto err_rmap;
>>>   -	rmap->chnls = kcalloc(dev->geo.nr_chnls, sizeof(struct nvm_ch_map),
>>> +	rmap->chnls = kcalloc(dev_geo->nr_chnls, sizeof(struct nvm_ch_map),
>>>   								GFP_KERNEL);
>>>   	if (!rmap->chnls)
>>>   		goto err_chnls;
>>>   -	for (i = 0; i < dev->geo.nr_chnls; i++) {
>>> +	for (i = 0; i < dev_geo->nr_chnls; i++) {
>>>   		struct nvm_ch_map *ch_rmap;
>>>   		int *lun_roffs;
>>> -		int luns_in_chnl = dev->geo.nr_luns;
>>> +		int luns_in_chnl = dev_geo->nr_luns;
>>>     		ch_rmap = &rmap->chnls[i];
>>>   @@ -543,10 +550,11 @@ static int nvm_register_map(struct nvm_dev *dev)
>>>     static void nvm_unregister_map(struct nvm_dev *dev)
>>>   {
>>> +	struct nvm_dev_geo *dev_geo = &dev->dev_geo;
>>>   	struct nvm_dev_map *rmap = dev->rmap;
>>>   	int i;
>>>   -	for (i = 0; i < dev->geo.nr_chnls; i++)
>>> +	for (i = 0; i < dev_geo->nr_chnls; i++)
>>>   		kfree(rmap->chnls[i].lun_offs);
>>>     	kfree(rmap->chnls);
>>> @@ -675,7 +683,7 @@ static int nvm_set_rqd_ppalist(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd,
>>>   	int i, plane_cnt, pl_idx;
>>>   	struct ppa_addr ppa;
>>>   -	if (geo->plane_mode == NVM_PLANE_SINGLE && nr_ppas == 1) {
>>> +	if (geo->c.pln_mode == NVM_PLANE_SINGLE && nr_ppas == 1) {
>>>   		rqd->nr_ppas = nr_ppas;
>>>   		rqd->ppa_addr = ppas[0];
>>>   @@ -689,7 +697,7 @@ static int nvm_set_rqd_ppalist(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd,
>>>   		return -ENOMEM;
>>>   	}
>>>   -	plane_cnt = geo->plane_mode;
>>> +	plane_cnt = geo->c.pln_mode;
>>>   	rqd->nr_ppas *= plane_cnt;
>>>     	for (i = 0; i < nr_ppas; i++) {
>>> @@ -804,18 +812,18 @@ EXPORT_SYMBOL(nvm_end_io);
>>>    */
>>>   int nvm_bb_tbl_fold(struct nvm_dev *dev, u8 *blks, int nr_blks)
>>>   {
>>> -	struct nvm_geo *geo = &dev->geo;
>>> +	struct nvm_dev_geo *dev_geo = &dev->dev_geo;
>>>   	int blk, offset, pl, blktype;
>>>   -	if (nr_blks != geo->nr_chks * geo->plane_mode)
>>> +	if (nr_blks != dev_geo->c.num_chk * dev_geo->c.pln_mode)
>>>   		return -EINVAL;
>>>   -	for (blk = 0; blk < geo->nr_chks; blk++) {
>>> -		offset = blk * geo->plane_mode;
>>> +	for (blk = 0; blk < dev_geo->c.num_chk; blk++) {
>>> +		offset = blk * dev_geo->c.pln_mode;
>>>   		blktype = blks[offset];
>>>     		/* Bad blocks on any planes take precedence over other types */
>>> -		for (pl = 0; pl < geo->plane_mode; pl++) {
>>> +		for (pl = 0; pl < dev_geo->c.pln_mode; pl++) {
>>>   			if (blks[offset + pl] &
>>>   					(NVM_BLK_T_BAD|NVM_BLK_T_GRWN_BAD)) {
>>>   				blktype = blks[offset + pl];
>>> @@ -826,7 +834,7 @@ int nvm_bb_tbl_fold(struct nvm_dev *dev, u8 *blks, int nr_blks)
>>>   		blks[blk] = blktype;
>>>   	}
>>>   -	return geo->nr_chks;
>>> +	return dev_geo->c.num_chk;
>>>   }
>>>   EXPORT_SYMBOL(nvm_bb_tbl_fold);
>>>   @@ -843,41 +851,10 @@ 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;
>>> +	struct nvm_dev_geo *dev_geo = &dev->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),
>>> +	dev->lun_map = kcalloc(BITS_TO_LONGS(dev_geo->all_luns),
>>>   					sizeof(unsigned long), GFP_KERNEL);
>>>   	if (!dev->lun_map)
>>>   		return -ENOMEM;
>>> @@ -912,19 +889,17 @@ static void nvm_free(struct nvm_dev *dev)
>>>     static int nvm_init(struct nvm_dev *dev)
>>>   {
>>> -	struct nvm_geo *geo = &dev->geo;
>>> +	struct nvm_dev_geo *dev_geo = &dev->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",
>>> +				dev_geo->ver_id,
>>> +				dev_geo->c.vmnt);
>>>     	ret = nvm_core_init(dev);
>>>   	if (ret) {
>>> @@ -932,10 +907,10 @@ 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, dev_geo->c.ws_min, dev_geo->c.ws_opt,
>>> +			dev_geo->c.num_chk, dev_geo->all_luns,
>>> +			dev_geo->nr_chnls);
>>>   	return 0;
>>>   err:
>>>   	pr_err("nvm: failed to initialize nvm\n");
>>> diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
>>> index 22e61cd4f801..519af8b9eab7 100644
>>> --- a/drivers/lightnvm/pblk-core.c
>>> +++ b/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->c.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->c.ws_opt;
>>>   }
>>>     static int pblk_line_submit_smeta_io(struct pblk *pblk, struct pblk_line *line,
>>> @@ -1035,19 +1035,19 @@ 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->c.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->c.clba;
>>>   		if (bit >= lm->emeta_bb)
>>>   			nr_bb++;
>>>   	}
>>>     	/* 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->c.ws_opt;
>>>   	bitmap_set(line->map_bitmap, off, lm->smeta_sec);
>>>   	line->sec_in_line -= lm->smeta_sec;
>>>   	line->smeta_ssec = off;
>>> @@ -1066,10 +1066,10 @@ 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->c.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->c.ws_opt);
>>> +			emeta_secs -= geo->c.ws_opt;
>>>   		}
>>>   	}
>>>   diff --git a/drivers/lightnvm/pblk-gc.c b/drivers/lightnvm/pblk-gc.c
>>> index 320f99af99e9..16afea3f5541 100644
>>> --- a/drivers/lightnvm/pblk-gc.c
>>> +++ b/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->c.csecs);
>>>   	if (!gc_rq->data) {
>>>   		pr_err("pblk: could not GC line:%d (%d/%d)\n",
>>>   					line->id, *line->vsc, gc_rq->nr_secs);
>>> diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
>>> index 5261702e9ff7..95ecb0ec736b 100644
>>> --- a/drivers/lightnvm/pblk-init.c
>>> +++ b/drivers/lightnvm/pblk-init.c
>>> @@ -146,7 +146,7 @@ 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->c.csecs);
>>>     	return pblk_rb_init(&pblk->rwb, entries, power_size, power_seg_sz);
>>>   }
>>> @@ -154,11 +154,11 @@ 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_addr_format_12 *dst)
>>>   {
>>> -	struct nvm_tgt_dev *dev = pblk->dev;
>>> -	struct nvm_geo *geo = &dev->geo;
>>> -	struct nvm_addr_format ppaf = geo->ppaf;
>>> +	struct nvm_addr_format_12 *src =
>>> +				(struct nvm_addr_format_12 *)&geo->c.addrf;
>>>   	int power_len;
>>>     	/* Re-calculate channel and lun format to adapt to configuration */
>>> @@ -167,34 +167,50 @@ 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;
>>> +	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->c.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;
>>>   }
>>> @@ -253,8 +269,7 @@ static int pblk_core_init(struct pblk *pblk)
>>>   	struct nvm_tgt_dev *dev = pblk->dev;
>>>   	struct nvm_geo *geo = &dev->geo;
>>>   -	pblk->pgs_in_buffer = NVM_MEM_PAGE_WRITE * geo->sec_per_pg *
>>> -						geo->nr_planes * geo->all_luns;
>>> +	pblk->pgs_in_buffer = geo->c.mw_cunits * geo->c.ws_opt * geo->all_luns;
>>>     	if (pblk_init_global_caches(pblk))
>>>   		return -ENOMEM;
>>> @@ -433,7 +448,7 @@ static void *pblk_bb_get_log(struct pblk *pblk)
>>>   	int i, nr_blks, blk_per_lun;
>>>   	int ret;
>>>   -	blk_per_lun = geo->nr_chks * geo->plane_mode;
>>> +	blk_per_lun = geo->c.num_chk * geo->c.pln_mode;
>>>   	nr_blks = blk_per_lun * geo->all_luns;
>>>     	log = kmalloc(nr_blks, GFP_KERNEL);
>>> @@ -551,18 +566,18 @@ 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->c.csecs);
>>> +	lm->emeta_len[1] = lm->emeta_sec[1] * geo->c.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->c.csecs);
>>> +	lm->emeta_len[2] = lm->emeta_sec[2] * geo->c.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->c.csecs);
>>> +	lm->emeta_len[3] = lm->emeta_sec[3] * geo->c.csecs;
>>>     	lm->vsc_list_len = l_mg->nr_lines * sizeof(u32);
>>>   @@ -593,13 +608,13 @@ 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->c.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->c.clba);
>>>   -	pblk->capacity = (provisioned - blk_meta) * geo->sec_per_chk;
>>> +	pblk->capacity = (provisioned - blk_meta) * geo->c.clba;
>>>     	atomic_set(&pblk->rl.free_blocks, nr_free_blks);
>>>   	atomic_set(&pblk->rl.free_user_blocks, nr_free_blks);
>>> @@ -710,10 +725,10 @@ static int pblk_lines_init(struct pblk *pblk)
>>>   	void *chunk_log;
>>>   	unsigned int smeta_len, emeta_len;
>>>   	long nr_bad_blks = 0, nr_free_blks = 0;
>>> -	int bb_distance, max_write_ppas, mod;
>>> +	int bb_distance, max_write_ppas;
>>>   	int i, ret;
>>>   -	pblk->min_write_pgs = geo->sec_per_pl * (geo->sec_size / PAGE_SIZE);
>>> +	pblk->min_write_pgs = geo->c.ws_opt * (geo->c.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);
>>> @@ -724,19 +739,13 @@ static int pblk_lines_init(struct pblk *pblk)
>>>   		return -EINVAL;
>>>   	}
>>>   -	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;
>>> -	}
>>> -
>>> -	l_mg->nr_lines = geo->nr_chks;
>>> +	l_mg->nr_lines = geo->c.num_chk;
>>>   	l_mg->log_line = l_mg->data_line = NULL;
>>>   	l_mg->l_seq_nr = l_mg->d_seq_nr = 0;
>>>   	l_mg->nr_free_lines = 0;
>>>   	bitmap_zero(&l_mg->meta_bitmap, PBLK_DATA_LINES);
>>>   -	lm->sec_per_line = geo->sec_per_chk * geo->all_luns;
>>> +	lm->sec_per_line = geo->c.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);
>>> @@ -750,8 +759,8 @@ static int pblk_lines_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->c.ws_opt;
>>> +	lm->smeta_len = lm->smeta_sec * geo->c.csecs;
>>>     	smeta_len = sizeof(struct line_smeta) + lm->lun_bitmap_len;
>>>   	if (smeta_len > lm->smeta_len) {
>>> @@ -764,8 +773,8 @@ static int pblk_lines_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->c.ws_opt;
>>> +	lm->emeta_len[0] = lm->emeta_sec[0] * geo->c.csecs;
>>>     	emeta_len = calc_emeta_len(pblk);
>>>   	if (emeta_len > lm->emeta_len[0]) {
>>> @@ -778,7 +787,7 @@ static int pblk_lines_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->c.clba);
>>>     	if (lm->min_blk_line > lm->blk_per_line) {
>>>   		pr_err("pblk: config. not supported. Min. LUN in line:%d\n",
>>> @@ -802,9 +811,9 @@ static int pblk_lines_init(struct pblk *pblk)
>>>   		goto fail_free_bb_template;
>>>   	}
>>>   -	bb_distance = (geo->all_luns) * geo->sec_per_pl;
>>> +	bb_distance = (geo->all_luns) * geo->c.ws_opt;
>>>   	for (i = 0; i < lm->sec_per_line; i += bb_distance)
>>> -		bitmap_set(l_mg->bb_template, i, geo->sec_per_pl);
>>> +		bitmap_set(l_mg->bb_template, i, geo->c.ws_opt);
>>>     	INIT_LIST_HEAD(&l_mg->free_list);
>>>   	INIT_LIST_HEAD(&l_mg->corrupt_list);
>>> @@ -981,9 +990,9 @@ 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.c.dom & NVM_RSP_L2P) {
>>>   		pr_err("pblk: host-side L2P table not supported. (%x)\n",
>>> -							dev->identity.dom);
>>> +							dev->geo.c.dom);
>>>   		return ERR_PTR(-EINVAL);
>>>   	}
>>>   @@ -1091,7 +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->c.clba * geo->c.csecs;
>>>   	tqueue->limits.discard_alignment = 0;
>>>   	blk_queue_max_discard_sectors(tqueue, UINT_MAX >> 9);
>>>   	queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, tqueue);
>>> diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c
>>> index 2f761283f43e..ebb6bae3a3b8 100644
>>> --- a/drivers/lightnvm/pblk-read.c
>>> +++ b/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->c.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)) {
>>> diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
>>> index aaab9a5c17cc..1574dbbfbb1c 100644
>>> --- a/drivers/lightnvm/pblk-recovery.c
>>> +++ b/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->c.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->c.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->c.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->c.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->c.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->c.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->c.csecs, GFP_KERNEL);
>>>   	if (!data) {
>>>   		ret = -ENOMEM;
>>>   		goto free_meta_list;
>>> diff --git a/drivers/lightnvm/pblk-rl.c b/drivers/lightnvm/pblk-rl.c
>>> index 0d457b162f23..bcab203477ec 100644
>>> --- a/drivers/lightnvm/pblk-rl.c
>>> +++ b/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->c.clba);
>>>     	rl->high = pblk->op_blks - blk_meta - lm->blk_per_line;
>>>   	rl->high_pw = get_count_order(rl->high);
>>> diff --git a/drivers/lightnvm/pblk-sysfs.c b/drivers/lightnvm/pblk-sysfs.c
>>> index d93e9b1f083a..5eb21a279361 100644
>>> --- a/drivers/lightnvm/pblk-sysfs.c
>>> +++ b/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_addr_format_12 *ppaf;
>>> +	struct nvm_addr_format_12 *geo_ppaf;
>>>   	ssize_t sz = 0;
>>>   -	sz = snprintf(page, PAGE_SIZE - sz,
>>> -		"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);
>>> +	ppaf = (struct nvm_addr_format_12 *)&pblk->ppaf;
>>> +	geo_ppaf = (struct nvm_addr_format_12 *)&geo->c.addrf;
>>> +
>>> +	sz = snprintf(page, PAGE_SIZE,
>>> +		"pblk:(s:%d)ch:%d/%d,lun:%d/%d,blk:%d/%d,pg:%d/%d,pl:%d/%d,sec:%d/%d\n",
>>> +			pblk->ppaf_bitsize,
>>> +			ppaf->ch_offset, ppaf->ch_len,
>>> +			ppaf->lun_offset, ppaf->lun_len,
>>> +			ppaf->blk_offset, ppaf->blk_len,
>>> +			ppaf->pg_offset, ppaf->pg_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);
>>> +		"device:ch:%d/%d,lun:%d/%d,blk:%d/%d,pg:%d/%d,pl:%d/%d,sec:%d/%d\n",
>>> +			geo_ppaf->ch_offset, geo_ppaf->ch_len,
>>> +			geo_ppaf->lun_offset, geo_ppaf->lun_len,
>>> +			geo_ppaf->blk_offset, geo_ppaf->blk_len,
>>> +			geo_ppaf->pg_offset, geo_ppaf->pg_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->c.clba);
>>>     	return sz;
>>>   }
>>> diff --git a/drivers/lightnvm/pblk-write.c b/drivers/lightnvm/pblk-write.c
>>> index aae86ed60b98..c49b27539d5a 100644
>>> --- a/drivers/lightnvm/pblk-write.c
>>> +++ b/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->c.csecs;
>>>   	data = ((void *)emeta->buf) + emeta->mem;
>>>     	bio = pblk_bio_map_addr(pblk, data, rq_ppas, rq_len,
>>> diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
>>> index 282dfc8780e8..67ffb53608f7 100644
>>> --- a/drivers/lightnvm/pblk.h
>>> +++ b/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_addr_format 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->c.mw_cunits * geo->all_luns * geo->c.ws_opt;
>>>   }
>>>     static inline int pblk_ppa_to_line(struct ppa_addr p)
>>> @@ -964,15 +947,17 @@ 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_addr_format_12 *ppaf =
>>> +				(struct nvm_addr_format_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 +965,15 @@ 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_addr_format_12 *ppaf =
>>> +				(struct nvm_addr_format_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 +990,15 @@ 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_addr_format_12 *ppaf =
>>> +				(struct nvm_addr_format_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 +1014,15 @@ 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_addr_format_12 *ppaf =
>>> +				(struct nvm_addr_format_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;
>>> @@ -1153,7 +1140,7 @@ static inline int pblk_set_progr_mode(struct pblk *pblk, int type)
>>>   	struct nvm_geo *geo = &dev->geo;
>>>   	int flags;
>>>   -	flags = geo->plane_mode >> 1;
>>> +	flags = geo->c.pln_mode >> 1;
>>>     	if (type == PBLK_WRITE)
>>>   		flags |= NVM_IO_SCRAMBLE_ENABLE;
>>> @@ -1174,7 +1161,7 @@ static inline int pblk_set_read_mode(struct pblk *pblk, int type)
>>>     	flags = NVM_IO_SUSPEND | NVM_IO_SCRAMBLE_ENABLE;
>>>   	if (type == PBLK_READ_SEQUENTIAL)
>>> -		flags |= geo->plane_mode >> 1;
>>> +		flags |= geo->c.pln_mode >> 1;
>>>     	return flags;
>>>   }
>>> @@ -1229,10 +1216,10 @@ 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.blk < geo->nr_chks &&
>>> -				ppa->g.pg < geo->ws_per_chk &&
>>> -				ppa->g.sec < geo->sec_per_pg)
>>> +				ppa->g.pl < geo->c.num_pln &&
>>> +				ppa->g.blk < geo->c.num_chk &&
>>> +				ppa->g.pg < geo->c.num_pg &&
>>> +				ppa->g.sec < geo->c.ws_min)
>>>   			continue;
>>>     		print_ppa(ppa, "boundary", i);
>>> diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
>>> index 839c0b96466a..c81e64cc20d7 100644
>>> --- a/drivers/nvme/host/lightnvm.c
>>> +++ b/drivers/nvme/host/lightnvm.c
>>> @@ -152,8 +152,8 @@ struct nvme_nvm_id12_addrf {
>>>   	__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;
>>>   @@ -254,106 +254,157 @@ static inline void _nvme_nvm_check_size(void)
>>>   	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_addr_format_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_dev_geo *dev_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;
>>> +	if (src->mtype != 0) {
>>> +		pr_err("nvm: memory type not supported\n");
>>> +		return -EINVAL;
>>> +	}
>>> +
>>> +	/* 1.2 spec. only reports a single version id - unfold */
>>> +	dev_geo->ver_id = id->ver_id;
>>>   -	nvm_id->num_ch = src->num_ch;
>>> -	nvm_id->num_lun = src->num_lun;
>>> +	dev_geo->nr_chnls = src->num_ch;
>>> +	dev_geo->nr_luns = src->num_lun;
>>> +	dev_geo->all_luns = dev_geo->nr_chnls * dev_geo->nr_luns;
>>>   -	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);
>>> +	dev_geo->c.num_chk = le16_to_cpu(src->num_chk);
>>> +	dev_geo->c.csecs = le16_to_cpu(src->csecs);
>>> +	dev_geo->c.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_pg = le16_to_cpu(src->fpg_sz) / dev_geo->c.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;
>>> +	dev_geo->c.clba = sec_per_pl * pg_per_blk;
>>> +
>>> +	dev_geo->c.ws_min = sec_per_pg;
>>> +	dev_geo->c.ws_opt = sec_per_pg;
>>> +	dev_geo->c.mw_cunits = 8;		/* default to MLC safe values */
>>> +
>>> +	dev_geo->c.mccap = le32_to_cpu(src->mccap);
>>> +
>>> +	dev_geo->c.trdt = le32_to_cpu(src->trdt);
>>> +	dev_geo->c.trdm = le32_to_cpu(src->trdm);
>>> +	dev_geo->c.tprt = le32_to_cpu(src->tprt);
>>> +	dev_geo->c.tprm = le32_to_cpu(src->tprm);
>>> +	dev_geo->c.tbet = le32_to_cpu(src->tbet);
>>> +	dev_geo->c.tbem = le32_to_cpu(src->tbem);
>>> +
>>> +	/* 1.2 compatibility */
>>> +	dev_geo->c.vmnt = id->vmnt;
>>> +	dev_geo->c.cap = le32_to_cpu(id->cap);
>>> +	dev_geo->c.dom = le32_to_cpu(id->dom);
>>> +
>>> +	dev_geo->c.mtype = src->mtype;
>>> +	dev_geo->c.fmtype = src->fmtype;
>>> +
>>> +	dev_geo->c.cpar = le16_to_cpu(src->cpar);
>>> +	dev_geo->c.mpos = le32_to_cpu(src->mpos);
>>> +
>>> +	dev_geo->c.pln_mode = NVM_PLANE_SINGLE;
>>> +
>>> +	if (dev_geo->c.mpos & 0x020202) {
>>> +		dev_geo->c.pln_mode = NVM_PLANE_DOUBLE;
>>> +		dev_geo->c.ws_opt <<= 1;
>>> +	} else if (dev_geo->c.mpos & 0x040404) {
>>> +		dev_geo->c.pln_mode = NVM_PLANE_QUAD;
>>> +		dev_geo->c.ws_opt <<= 2;
>>>   	}
>>>   -	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);
>>> -
>>> -	/* 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);
>>> +	dev_geo->c.num_pln = src->num_pln;
>>> +	dev_geo->c.num_pg = le16_to_cpu(src->num_pg);
>>> +	dev_geo->c.fpg_sz = le16_to_cpu(src->fpg_sz);
>>> +
>>> +	nvme_nvm_set_addr_12((struct nvm_addr_format_12 *)&dev_geo->c.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_addr_format *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));
>>> -
>>> -	return init_grp(nvm_id, id);
>>> +	dst->ch_len = src->grp_len;
>>> +	dst->lun_len = src->pu_len;
>>> +	dst->chk_len = src->chk_len;
>>> +	dst->sec_len = src->lba_len;
>>> +
>>> +	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_dev_geo *dev_geo)
>>>   {
>>> -	nvm_id->ver_id = id->mjr;
>>> +	dev_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);
>>> +	dev_geo->nr_chnls = le16_to_cpu(id->num_grp);
>>> +	dev_geo->nr_luns = le16_to_cpu(id->num_pu);
>>> +	dev_geo->all_luns = dev_geo->nr_chnls * dev_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);
>>> +	dev_geo->c.num_chk = le32_to_cpu(id->num_chk);
>>> +	dev_geo->c.clba = le32_to_cpu(id->clba);
>>> +	dev_geo->c.csecs = -1;		/* Set by nvme identify */
>>> +	dev_geo->c.sos = -1;		/* Set bu nvme identify */
>>>   -	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);
>>> +	dev_geo->c.ws_min = le32_to_cpu(id->ws_min);
>>> +	dev_geo->c.ws_opt = le32_to_cpu(id->ws_opt);
>>> +	dev_geo->c.mw_cunits = le32_to_cpu(id->mw_cunits);
>>>   -	/* calculated values */
>>> -	nvm_id->ws_per_chk = nvm_id->clba / nvm_id->ws_min;
>>> +	dev_geo->c.trdt = le32_to_cpu(id->trdt);
>>> +	dev_geo->c.trdm = le32_to_cpu(id->trdm);
>>> +	dev_geo->c.tprt = le32_to_cpu(id->twrt);
>>> +	dev_geo->c.tprm = le32_to_cpu(id->twrm);
>>> +	dev_geo->c.tbet = le32_to_cpu(id->tcrst);
>>> +	dev_geo->c.tbem = le32_to_cpu(id->tcrsm);
>>>   -	/* 1.2 compatibility */
>>> -	nvm_id->ws_seq = NVM_IO_SNGL_ACCESS;
>>> +	nvme_nvm_set_addr_20(&dev_geo->c.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;
>>> @@ -380,18 +431,18 @@ static int nvme_nvm_identity(struct nvm_dev *nvmdev, struct nvm_id *nvm_id)
>>>   	 */
>>>   	switch (id->ver_id) {
>>>   	case 1:
>>> -		ret = nvme_nvm_setup_12(nvmdev, nvm_id, id);
>>> +		ret = nvme_nvm_setup_12(id, &nvmdev->dev_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->dev_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;
>>> @@ -401,12 +452,12 @@ static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa,
>>>   								u8 *blks)
>>>   {
>>>   	struct request_queue *q = nvmdev->q;
>>> -	struct nvm_geo *geo = &nvmdev->geo;
>>> +	struct nvm_dev_geo *dev_geo = &nvmdev->dev_geo;
>>>   	struct nvme_ns *ns = q->queuedata;
>>>   	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 = dev_geo->c.num_chk * dev_geo->c.num_pln;
>>>   	int tblsz = sizeof(struct nvme_nvm_bb_tbl) + nr_blks;
>>>   	int ret = 0;
>>>   @@ -447,7 +498,7 @@ static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa,
>>>   		goto out;
>>>   	}
>>>   -	memcpy(blks, bb_tbl->blk, geo->nr_chks * geo->plane_mode);
>>> +	memcpy(blks, bb_tbl->blk, dev_geo->c.num_chk * dev_geo->c.num_pln);
>>>   out:
>>>   	kfree(bb_tbl);
>>>   	return ret;
>>> @@ -815,9 +866,10 @@ int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg)
>>>   void nvme_nvm_update_nvm_info(struct nvme_ns *ns)
>>>   {
>>>   	struct nvm_dev *ndev = ns->ndev;
>>> +	struct nvm_dev_geo *dev_geo = &ndev->dev_geo;
>>>   -	ndev->identity.csecs = ndev->geo.sec_size = 1 << ns->lba_shift;
>>> -	ndev->identity.sos = ndev->geo.oob_size = ns->ms;
>>> +	dev_geo->c.csecs = 1 << ns->lba_shift;
>>> +	dev_geo->c.sos = ns->ms;
>>>   }
>>>     int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node)
>>> @@ -850,23 +902,22 @@ static ssize_t nvm_dev_attr_show(struct device *dev,
>>>   {
>>>   	struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
>>>   	struct nvm_dev *ndev = ns->ndev;
>>> -	struct nvm_id *id;
>>> +	struct nvm_dev_geo *dev_geo = &ndev->dev_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", dev_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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.trdm);
>>>   	} else {
>>>   		return scnprintf(page,
>>>   				 PAGE_SIZE,
>>> @@ -875,75 +926,79 @@ static ssize_t nvm_dev_attr_show(struct device *dev,
>>>   	}
>>>   }
>>>   +static ssize_t nvm_dev_attr_show_ppaf(struct nvm_addr_format_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_dev_geo *dev_geo = &ndev->dev_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", dev_geo->c.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", dev_geo->c.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 *)&dev_geo->c.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", dev_geo->c.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", dev_geo->c.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", dev_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", dev_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", dev_geo->c.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", dev_geo->c.num_chk);
>>>   	} 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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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);
>>>   	}
>>>   }
>>>   @@ -952,42 +1007,40 @@ static ssize_t nvm_dev_attr_show_20(struct device *dev,
>>>   {
>>>   	struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
>>>   	struct nvm_dev *ndev = ns->ndev;
>>> -	struct nvm_id *id;
>>> +	struct nvm_dev_geo *dev_geo = &ndev->dev_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", dev_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", dev_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", dev_geo->c.num_chk);
>>>   	} else if (strcmp(attr->name, "clba") == 0) {
>>> -		return scnprintf(page, PAGE_SIZE, "%u\n", id->clba);
>>> +		return scnprintf(page, PAGE_SIZE, "%u\n", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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", dev_geo->c.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);
>>>   	}
>>>   }
>>>   @@ -1106,10 +1159,13 @@ static const struct attribute_group nvm_dev_attr_group_20 = {
>>>     int nvme_nvm_register_sysfs(struct nvme_ns *ns)
>>>   {
>>> -	if (!ns->ndev)
>>> +	struct nvm_dev *ndev = ns->ndev;
>>> +	struct nvm_dev_geo *dev_geo = &ndev->dev_geo;
>>> +
>>> +	if (!ndev)
>>>   		return -EINVAL;
>>>   -	switch (ns->ndev->identity.ver_id) {
>>> +	switch (dev_geo->ver_id) {
>>>   	case 1:
>>>   		return sysfs_create_group(&disk_to_dev(ns->disk)->kobj,
>>>   					&nvm_dev_attr_group_12);
>>> @@ -1123,7 +1179,10 @@ int nvme_nvm_register_sysfs(struct nvme_ns *ns)
>>>     void nvme_nvm_unregister_sysfs(struct nvme_ns *ns)
>>>   {
>>> -	switch (ns->ndev->identity.ver_id) {
>>> +	struct nvm_dev *ndev = ns->ndev;
>>> +	struct nvm_dev_geo *dev_geo = &ndev->dev_geo;
>>> +
>>> +	switch (dev_geo->ver_id) {
>>>   	case 1:
>>>   		sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
>>>   					&nvm_dev_attr_group_12);
>>> diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
>>> index e55b10573c99..18e3751b1632 100644
>>> --- a/include/linux/lightnvm.h
>>> +++ b/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 +152,107 @@ struct nvm_id_lp_tbl {
>>>   	struct nvm_id_lp_mlc mlc;
>>>   };
>>>   -struct nvm_addr_format {
>>> -	u8	ch_offset;
>>> +struct nvm_addr_format_12 {
>>>   	u8	ch_len;
>>> -	u8	lun_offset;
>>>   	u8	lun_len;
>>> -	u8	pln_offset;
>>> +	u8	blk_len;
>>> +	u8	pg_len;
>>>   	u8	pln_len;
>>> +	u8	sect_len;
>>> +
>>> +	u8	ch_offset;
>>> +	u8	lun_offset;
>>>   	u8	blk_offset;
>>> -	u8	blk_len;
>>>   	u8	pg_offset;
>>> -	u8	pg_len;
>>> +	u8	pln_offset;
>>>   	u8	sect_offset;
>>> -	u8	sect_len;
>>> +
>>> +	u64	ch_mask;
>>> +	u64	lun_mask;
>>> +	u64	blk_mask;
>>> +	u64	pg_mask;
>>> +	u64	pln_mask;
>>> +	u64	sec_mask;
>>> +};
>>> +
>>> +struct nvm_addr_format {
>>> +	u8	ch_len;
>>> +	u8	lun_len;
>>> +	u8	chk_len;
>>> +	u8	sec_len;
>>> +	u8	rsv_len[2];
>>> +
>>> +	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_id {
>>> -	u8	ver_id;
>>> +/* Device common geometry */
>>> +struct nvm_common_geo {
>>> +	/* chunk geometry */
>>> +	u32	num_chk;	/* chunks per lun */
>>> +	u32	clba;		/* sectors per chunk */
>>> +	u16	csecs;		/* sector size */
>>> +	u16	sos;		/* out-of-band area size */
>>> +
>>> +	/* device write constrains */
>>> +	u32	ws_min;		/* minimum write size */
>>> +	u32	ws_opt;		/* optimal write size */
>>> +	u32	mw_cunits;	/* distance required for successful read */
>>> +
>>> +	/* 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_addr_format addrf;
>>> +
>>> +	/* 1.2 compatibility */
>>>   	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;
>>> -
>>> -	/* calculated values */
>>> -	u16	ws_seq;
>>> -	u16	ws_per_chk;
>>> -
>>> -	/* 1.2 compatibility */
>>>   	u8	mtype;
>>>   	u8	fmtype;
>>>   +	u16	cpar;
>>> +	u32	mpos;
>>> +
>>>   	u8	num_pln;
>>> +	u8	pln_mode;
>>>   	u16	num_pg;
>>>   	u16	fpg_sz;
>>> -} __packed;
>>> +};
>>> +
>>> +/* Device identified geometry */
>>> +struct nvm_dev_geo {
>>> +	/* device reported version */
>>> +	u8	ver_id;
>>> +
>>> +	/* full device geometry */
>>> +	u16	nr_chnls;
>>> +	u16	nr_luns;
>>> +
>>> +	/* calculated values */
>>> +	u16	all_luns;
>>> +
>>> +	struct nvm_common_geo c;
>>> +};
>>>     struct nvm_target {
>>>   	struct list_head list;
>>> @@ -274,36 +319,22 @@ enum {
>>>   	NVM_BLK_ST_BAD =	0x8,	/* Bad block */
>>>   };
>>>   -
>>> -/* Device generic information */
>>> +/* Instance geometry */
>>>   struct nvm_geo {
>>> -	/* generic geometry */
>>> +	/* instance specific geometry */
>>>   	int nr_chnls;
>>> -	int all_luns; /* across channels */
>>> -	int nr_luns; /* per channel */
>>> -	int nr_chks; /* per lun */
>>> -
>>> -	int sec_size;
>>> -	int oob_size;
>>> -	int mccap;
>>> -
>>> -	int sec_per_chk;
>>> -	int sec_per_lun;
>>> -
>>> -	int ws_min;
>>> -	int ws_opt;
>>> -	int ws_seq;
>>> -	int ws_per_chk;
>>> +	int nr_luns;		/* per channel */
>>>     	int op;
>>>   -	struct nvm_addr_format ppaf;
>>> +	/* common geometry */
>>> +	struct nvm_common_geo c;
>>>   -	/* 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 */
>>> +	/* calculated values */
>>> +	int all_luns;		/* across channels */
>>> +	int all_chunks;		/* across channels */
>>> +
>>> +	sector_t total_secs;	/* across channels */
>>>   };
>>>     /* sub-device structure */
>>> @@ -314,9 +345,6 @@ 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;
>>> @@ -329,15 +357,11 @@ struct nvm_dev {
>>>   	struct list_head devices;
>>>     	/* Device information */
>>> -	struct nvm_geo geo;
>>> -
>>> -	unsigned long total_secs;
>>> +	struct nvm_dev_geo dev_geo;
>>>     	unsigned long *lun_map;
>>>   	void *dma_pool;
>>>   -	struct nvm_id identity;
>>> -
>>>   	/* Backend device */
>>>   	struct request_queue *q;
>>>   	char name[DISK_NAME_LEN];
>>> @@ -357,14 +381,16 @@ 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_addr_format_12 *ppaf =
>>> +				(struct nvm_addr_format_12 *)&geo->c.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 +399,18 @@ 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_addr_format_12 *ppaf =
>>> +				(struct nvm_addr_format_12 *)&geo->c.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;
>>>   }
>>
>> Thanks for the patch. I appreciate the work, but it is not the way I
>> want the 2.0 representation to go. The 2.0 variables should stay in
>> the nvm_geo data structure, and then if any 1.2 variables are on the
>> side, they can be in a substructure.
> 
> I don't understand. Everything is in nvm_geo, with the only different
> that there is nvm_common_geo, which contains the shared geometry between
> all instances. As mentioned before, if only having nvm_geo, then we are
> truncating the structure for each instance with different channel/lun
> values, which is very from a target perspective (the target can access
> the underlying device's values, which is _very_ error prone). This
> structure represents all 2.0 variables as they are.I can move all 1.2
> variables to a sub structure if that helps.

Let me try to see if I can clarify. From my understanding,the patch is 
doing three things,

1. Replace dev->identify and use a generic data structure
2. Introduced nvm_dev_geo to represent both intance and device channels 
and luns.
3. Move pblk addressing logic into core

Could these be split up? maybe 1 and 3 go together, and the address 
format go by itself. Maybe not. I'm fine if you say that they should 
stay together.

For 1 and 3, Instead of making the nvm_dev_geo the base structure, the 
code should continue to use nvm_geo (don't move the variables into 
nvm_geo_common and similar data struct. The nvm_dev->nvm_dev_geo is not 
pretty, the code already has a reference that the nvm_dev_geo is in the 
nvm_dev data structure.

When the code needs the instance specific channels and luns, put them in 
another data structure (than nvm_dev_geo), and maintain the relationship 
there.

> 
> If this is not it, can you explain in detail what the problem is? In
> pblk, I don't want to deal with a device-centric structure and variables
> spread out across what was identity and nvm_geo, I want a single
> structure that contains everything, which is the motivation for this
> patch.
>