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lightnvm: simplify geometry structure

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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>
This commit is contained in:
Javier González 2018-03-30 00:05:10 +02:00 committed by Jens Axboe
parent 43d4712721
commit e46f4e4822
12 changed files with 452 additions and 426 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
drivers/lightnvm/core.c
View File

@ -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");

16
drivers/lightnvm/pblk-core.c
View File

@ -613,7 +613,7 @@ next_rq:
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;
}
}

2
drivers/lightnvm/pblk-gc.c
View File

@ -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);

113
drivers/lightnvm/pblk-init.c
View File

@ -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;
dst->lun_len = power_len;
pblk->ppaf.sec_offset = 0;
pblk->ppaf.pln_offset = ppaf.sect_len;
pblk->ppaf.ch_offset = pblk->ppaf.pln_offset + ppaf.pln_len;
pblk->ppaf.lun_offset = pblk->ppaf.ch_offset + ppaf.ch_len;
pblk->ppaf.pg_offset = pblk->ppaf.lun_offset + ppaf.lun_len;
pblk->ppaf.blk_offset = pblk->ppaf.pg_offset + ppaf.pg_len;
pblk->ppaf.sec_mask = (1ULL << ppaf.sect_len) - 1;
pblk->ppaf.pln_mask = ((1ULL << ppaf.pln_len) - 1) <<
pblk->ppaf.pln_offset;
pblk->ppaf.ch_mask = ((1ULL << ppaf.ch_len) - 1) <<
pblk->ppaf.ch_offset;
pblk->ppaf.lun_mask = ((1ULL << ppaf.lun_len) - 1) <<
pblk->ppaf.lun_offset;
pblk->ppaf.pg_mask = ((1ULL << ppaf.pg_len) - 1) <<
pblk->ppaf.pg_offset;
pblk->ppaf.blk_mask = ((1ULL << ppaf.blk_len) - 1) <<
pblk->ppaf.blk_offset;
dst->blk_len = src->blk_len;
dst->pg_len = src->pg_len;
dst->pln_len = src->pln_len;
dst->sect_len = src->sect_len;
pblk->ppaf_bitsize = pblk->ppaf.blk_offset + ppaf.blk_len;
dst->sect_offset = 0;
dst->pln_offset = dst->sect_len;
dst->ch_offset = dst->pln_offset + dst->pln_len;
dst->lun_offset = dst->ch_offset + dst->ch_len;
dst->pg_offset = dst->lun_offset + dst->lun_len;
dst->blk_offset = dst->pg_offset + dst->pg_len;
dst->sec_mask = ((1ULL << dst->sect_len) - 1) << dst->sect_offset;
dst->pln_mask = ((1ULL << dst->pln_len) - 1) << dst->pln_offset;
dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset;
dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset;
dst->pg_mask = ((1ULL << dst->pg_len) - 1) << dst->pg_offset;
dst->blk_mask = ((1ULL << dst->blk_len) - 1) << dst->blk_offset;
return dst->blk_offset + src->blk_len;
}
static int pblk_set_ppaf(struct pblk *pblk)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
int mod;
div_u64_rem(geo->clba, pblk->min_write_pgs, &mod);
if (mod) {
pr_err("pblk: bad configuration of sectors/pages\n");
return -EINVAL;
}
pblk->ppaf_bitsize = pblk_set_addrf_12(geo, (void *)&pblk->ppaf);
return 0;
}
@ -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 @@ add_smeta_page:
*/
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 @@ add_emeta_page:
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);

2
drivers/lightnvm/pblk-read.c
View File

@ -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)) {

14
drivers/lightnvm/pblk-recovery.c
View File

@ -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 @@ next_read_rq:
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 @@ next_pad_rq:
goto fail_free_pad;
}
rq_len = rq_ppas * geo->sec_size;
rq_len = rq_ppas * geo->csecs;
meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL, &dma_meta_list);
if (!meta_list) {
@ -509,7 +509,7 @@ next_rq:
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 @@ next_rq:
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;

2
drivers/lightnvm/pblk-rl.c
View File

@ -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);

35
drivers/lightnvm/pblk-sysfs.c
View File

@ -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;
}

2
drivers/lightnvm/pblk-write.c
View File

@ -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,

83
drivers/lightnvm/pblk.h
View File

@ -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);

343
drivers/nvme/host/lightnvm.c
View File

@ -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 +254,160 @@ 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_addrf_12 *dst,
struct nvme_nvm_id12_addrf *src)
{
dst->ch_len = src->ch_len;
dst->lun_len = src->lun_len;
dst->blk_len = src->blk_len;
dst->pg_len = src->pg_len;
dst->pln_len = src->pln_len;
dst->sect_len = src->sec_len;
dst->ch_offset = src->ch_offset;
dst->lun_offset = src->lun_offset;
dst->blk_offset = src->blk_offset;
dst->pg_offset = src->pg_offset;
dst->pln_offset = src->pln_offset;
dst->sect_offset = src->sec_offset;
dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset;
dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset;
dst->blk_mask = ((1ULL << dst->blk_len) - 1) << dst->blk_offset;
dst->pg_mask = ((1ULL << dst->pg_len) - 1) << dst->pg_offset;
dst->pln_mask = ((1ULL << dst->pln_len) - 1) << dst->pln_offset;
dst->sec_mask = ((1ULL << dst->sect_len) - 1) << dst->sect_offset;
}
static int nvme_nvm_setup_12(struct nvme_nvm_id12 *id,
struct nvm_geo *geo)
{
struct nvme_nvm_id12_grp *src;
int sec_per_pg, sec_per_pl, pg_per_blk;
if (id12->cgrps != 1)
if (id->cgrps != 1)
return -EINVAL;
src = &id12->grp;
src = &id->grp;
nvm_id->mtype = src->mtype;
nvm_id->fmtype = src->fmtype;
nvm_id->num_ch = src->num_ch;
nvm_id->num_lun = src->num_lun;
nvm_id->num_chk = le16_to_cpu(src->num_chk);
nvm_id->csecs = le16_to_cpu(src->csecs);
nvm_id->sos = le16_to_cpu(src->sos);
pg_per_blk = le16_to_cpu(src->num_pg);
sec_per_pg = le16_to_cpu(src->fpg_sz) / nvm_id->csecs;
sec_per_pl = sec_per_pg * src->num_pln;
nvm_id->clba = sec_per_pl * pg_per_blk;
nvm_id->ws_per_chk = pg_per_blk;
nvm_id->mpos = le32_to_cpu(src->mpos);
nvm_id->cpar = le16_to_cpu(src->cpar);
nvm_id->mccap = le32_to_cpu(src->mccap);
nvm_id->ws_opt = nvm_id->ws_min = sec_per_pg;
nvm_id->ws_seq = NVM_IO_SNGL_ACCESS;
if (nvm_id->mpos & 0x020202) {
nvm_id->ws_seq = NVM_IO_DUAL_ACCESS;
nvm_id->ws_opt <<= 1;
} else if (nvm_id->mpos & 0x040404) {
nvm_id->ws_seq = NVM_IO_QUAD_ACCESS;
nvm_id->ws_opt <<= 2;
if (src->mtype != 0) {
pr_err("nvm: memory type not supported\n");
return -EINVAL;
}
nvm_id->trdt = le32_to_cpu(src->trdt);
nvm_id->trdm = le32_to_cpu(src->trdm);
nvm_id->tprt = le32_to_cpu(src->tprt);
nvm_id->tprm = le32_to_cpu(src->tprm);
nvm_id->tbet = le32_to_cpu(src->tbet);
nvm_id->tbem = le32_to_cpu(src->tbem);
geo->ver_id = id->ver_id;
geo->nr_chnls = src->num_ch;
geo->nr_luns = src->num_lun;
geo->all_luns = geo->nr_chnls * geo->nr_luns;
geo->nr_chks = le16_to_cpu(src->num_chk);
geo->csecs = le16_to_cpu(src->csecs);
geo->sos = le16_to_cpu(src->sos);
pg_per_blk = le16_to_cpu(src->num_pg);
sec_per_pg = le16_to_cpu(src->fpg_sz) / geo->csecs;
sec_per_pl = sec_per_pg * src->num_pln;
geo->clba = sec_per_pl * pg_per_blk;
geo->all_chunks = geo->all_luns * geo->nr_chks;
geo->total_secs = geo->clba * geo->all_chunks;
geo->ws_min = sec_per_pg;
geo->ws_opt = sec_per_pg;
geo->mw_cunits = geo->ws_opt << 3; /* default to MLC safe values */
geo->mccap = le32_to_cpu(src->mccap);
geo->trdt = le32_to_cpu(src->trdt);
geo->trdm = le32_to_cpu(src->trdm);
geo->tprt = le32_to_cpu(src->tprt);
geo->tprm = le32_to_cpu(src->tprm);
geo->tbet = le32_to_cpu(src->tbet);
geo->tbem = le32_to_cpu(src->tbem);
/* 1.2 compatibility */
nvm_id->num_pln = src->num_pln;
nvm_id->num_pg = le16_to_cpu(src->num_pg);
nvm_id->fpg_sz = le16_to_cpu(src->fpg_sz);
geo->vmnt = id->vmnt;
geo->cap = le32_to_cpu(id->cap);
geo->dom = le32_to_cpu(id->dom);
geo->mtype = src->mtype;
geo->fmtype = src->fmtype;
geo->cpar = le16_to_cpu(src->cpar);
geo->mpos = le32_to_cpu(src->mpos);
geo->plane_mode = NVM_PLANE_SINGLE;
if (geo->mpos & 0x020202) {
geo->plane_mode = NVM_PLANE_DOUBLE;
geo->ws_opt <<= 1;
} else if (geo->mpos & 0x040404) {
geo->plane_mode = NVM_PLANE_QUAD;
geo->ws_opt <<= 2;
}
geo->num_pln = src->num_pln;
geo->num_pg = le16_to_cpu(src->num_pg);
geo->fpg_sz = le16_to_cpu(src->fpg_sz);
nvme_nvm_set_addr_12((struct nvm_addrf_12 *)&geo->addrf, &id->ppaf);
return 0;
}
static int nvme_nvm_setup_12(struct nvm_dev *nvmdev, struct nvm_id *nvm_id,
struct nvme_nvm_id12 *id)
static void nvme_nvm_set_addr_20(struct nvm_addrf *dst,
struct nvme_nvm_id20_addrf *src)
{
nvm_id->ver_id = id->ver_id;
nvm_id->vmnt = id->vmnt;
nvm_id->cap = le32_to_cpu(id->cap);
nvm_id->dom = le32_to_cpu(id->dom);
memcpy(&nvm_id->ppaf, &id->ppaf,
sizeof(struct nvm_addr_format));
dst->ch_len = src->grp_len;
dst->lun_len = src->pu_len;
dst->chk_len = src->chk_len;
dst->sec_len = src->lba_len;
return init_grp(nvm_id, id);
dst->sec_offset = 0;
dst->chk_offset = dst->sec_len;
dst->lun_offset = dst->chk_offset + dst->chk_len;
dst->ch_offset = dst->lun_offset + dst->lun_len;
dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset;
dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset;
dst->chk_mask = ((1ULL << dst->chk_len) - 1) << dst->chk_offset;
dst->sec_mask = ((1ULL << dst->sec_len) - 1) << dst->sec_offset;
}
static int nvme_nvm_setup_20(struct nvm_dev *nvmdev, struct nvm_id *nvm_id,
struct nvme_nvm_id20 *id)
static int nvme_nvm_setup_20(struct nvme_nvm_id20 *id,
struct nvm_geo *geo)
{
nvm_id->ver_id = id->mjr;
geo->ver_id = id->mjr;
nvm_id->num_ch = le16_to_cpu(id->num_grp);
nvm_id->num_lun = le16_to_cpu(id->num_pu);
nvm_id->num_chk = le32_to_cpu(id->num_chk);
nvm_id->clba = le32_to_cpu(id->clba);
geo->nr_chnls = le16_to_cpu(id->num_grp);
geo->nr_luns = le16_to_cpu(id->num_pu);
geo->all_luns = geo->nr_chnls * geo->nr_luns;
nvm_id->ws_min = le32_to_cpu(id->ws_min);
nvm_id->ws_opt = le32_to_cpu(id->ws_opt);
nvm_id->mw_cunits = le32_to_cpu(id->mw_cunits);
geo->nr_chks = le32_to_cpu(id->num_chk);
geo->clba = le32_to_cpu(id->clba);
nvm_id->trdt = le32_to_cpu(id->trdt);
nvm_id->trdm = le32_to_cpu(id->trdm);
nvm_id->tprt = le32_to_cpu(id->twrt);
nvm_id->tprm = le32_to_cpu(id->twrm);
nvm_id->tbet = le32_to_cpu(id->tcrst);
nvm_id->tbem = le32_to_cpu(id->tcrsm);
geo->all_chunks = geo->all_luns * geo->nr_chks;
geo->total_secs = geo->clba * geo->all_chunks;
/* calculated values */
nvm_id->ws_per_chk = nvm_id->clba / nvm_id->ws_min;
geo->ws_min = le32_to_cpu(id->ws_min);
geo->ws_opt = le32_to_cpu(id->ws_opt);
geo->mw_cunits = le32_to_cpu(id->mw_cunits);
/* 1.2 compatibility */
nvm_id->ws_seq = NVM_IO_SNGL_ACCESS;
geo->trdt = le32_to_cpu(id->trdt);
geo->trdm = le32_to_cpu(id->trdm);
geo->tprt = le32_to_cpu(id->twrt);
geo->tprm = le32_to_cpu(id->twrm);
geo->tbet = le32_to_cpu(id->tcrst);
geo->tbem = le32_to_cpu(id->tcrsm);
nvme_nvm_set_addr_20(&geo->addrf, &id->lbaf);
return 0;
}
static int nvme_nvm_identity(struct nvm_dev *nvmdev, struct nvm_id *nvm_id)
static int nvme_nvm_identity(struct nvm_dev *nvmdev)
{
struct nvme_ns *ns = nvmdev->q->queuedata;
struct nvme_nvm_id12 *id;
@ -380,18 +434,18 @@ 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->geo);
break;
case 2:
ret = nvme_nvm_setup_20(nvmdev, nvm_id,
(struct nvme_nvm_id20 *)id);
ret = nvme_nvm_setup_20((struct nvme_nvm_id20 *)id,
&nvmdev->geo);
break;
default:
dev_err(ns->ctrl->device,
"OCSSD revision not supported (%d)\n",
nvm_id->ver_id);
dev_err(ns->ctrl->device, "OCSSD revision not supported (%d)\n",
id->ver_id);
ret = -EINVAL;
}
out:
kfree(id);
return ret;
@ -406,7 +460,7 @@ static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa,
struct nvme_ctrl *ctrl = ns->ctrl;
struct nvme_nvm_command c = {};
struct nvme_nvm_bb_tbl *bb_tbl;
int nr_blks = geo->nr_chks * geo->plane_mode;
int nr_blks = geo->nr_chks * geo->num_pln;
int tblsz = sizeof(struct nvme_nvm_bb_tbl) + nr_blks;
int ret = 0;
@ -447,7 +501,7 @@ 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, geo->nr_chks * geo->num_pln);
out:
kfree(bb_tbl);
return ret;
@ -815,9 +869,10 @@ 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_geo *geo = &ndev->geo;
ndev->identity.csecs = ndev->geo.sec_size = 1 << ns->lba_shift;
ndev->identity.sos = ndev->geo.oob_size = ns->ms;
geo->csecs = 1 << ns->lba_shift;
geo->sos = ns->ms;
}
int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node)
@ -850,23 +905,22 @@ 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_geo *geo = &ndev->geo;
struct attribute *attr;
if (!ndev)
return 0;
id = &ndev->identity;
attr = &dattr->attr;
if (strcmp(attr->name, "version") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->ver_id);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->ver_id);
} else if (strcmp(attr->name, "capabilities") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->cap);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->cap);
} else if (strcmp(attr->name, "read_typ") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->trdt);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdt);
} else if (strcmp(attr->name, "read_max") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->trdm);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdm);
} else {
return scnprintf(page,
PAGE_SIZE,
@ -875,75 +929,78 @@ static ssize_t nvm_dev_attr_show(struct device *dev,
}
}
static ssize_t nvm_dev_attr_show_ppaf(struct nvm_addrf_12 *ppaf, char *page)
{
return scnprintf(page, PAGE_SIZE,
"0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
ppaf->ch_offset, ppaf->ch_len,
ppaf->lun_offset, ppaf->lun_len,
ppaf->pln_offset, ppaf->pln_len,
ppaf->blk_offset, ppaf->blk_len,
ppaf->pg_offset, ppaf->pg_len,
ppaf->sect_offset, ppaf->sect_len);
}
static ssize_t nvm_dev_attr_show_12(struct device *dev,
struct device_attribute *dattr, char *page)
{
struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
struct nvm_dev *ndev = ns->ndev;
struct nvm_id *id;
struct nvm_geo *geo = &ndev->geo;
struct attribute *attr;
if (!ndev)
return 0;
id = &ndev->identity;
attr = &dattr->attr;
if (strcmp(attr->name, "vendor_opcode") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->vmnt);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->vmnt);
} else if (strcmp(attr->name, "device_mode") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->dom);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->dom);
/* kept for compatibility */
} else if (strcmp(attr->name, "media_manager") == 0) {
return scnprintf(page, PAGE_SIZE, "%s\n", "gennvm");
} else if (strcmp(attr->name, "ppa_format") == 0) {
return scnprintf(page, PAGE_SIZE,
"0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
id->ppaf.ch_offset, id->ppaf.ch_len,
id->ppaf.lun_offset, id->ppaf.lun_len,
id->ppaf.pln_offset, id->ppaf.pln_len,
id->ppaf.blk_offset, id->ppaf.blk_len,
id->ppaf.pg_offset, id->ppaf.pg_len,
id->ppaf.sect_offset, id->ppaf.sect_len);
return nvm_dev_attr_show_ppaf((void *)&geo->addrf, page);
} else if (strcmp(attr->name, "media_type") == 0) { /* u8 */
return scnprintf(page, PAGE_SIZE, "%u\n", id->mtype);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->mtype);
} else if (strcmp(attr->name, "flash_media_type") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->fmtype);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->fmtype);
} else if (strcmp(attr->name, "num_channels") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->num_ch);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->nr_chnls);
} else if (strcmp(attr->name, "num_luns") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->num_lun);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->nr_luns);
} else if (strcmp(attr->name, "num_planes") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->num_pln);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pln);
} else if (strcmp(attr->name, "num_blocks") == 0) { /* u16 */
return scnprintf(page, PAGE_SIZE, "%u\n", id->num_chk);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->nr_chks);
} else if (strcmp(attr->name, "num_pages") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->num_pg);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pg);
} else if (strcmp(attr->name, "page_size") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->fpg_sz);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->fpg_sz);
} else if (strcmp(attr->name, "hw_sector_size") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->csecs);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->csecs);
} else if (strcmp(attr->name, "oob_sector_size") == 0) {/* u32 */
return scnprintf(page, PAGE_SIZE, "%u\n", id->sos);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->sos);
} else if (strcmp(attr->name, "prog_typ") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->tprt);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt);
} else if (strcmp(attr->name, "prog_max") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->tprm);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm);
} else if (strcmp(attr->name, "erase_typ") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->tbet);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet);
} else if (strcmp(attr->name, "erase_max") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->tbem);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem);
} else if (strcmp(attr->name, "multiplane_modes") == 0) {
return scnprintf(page, PAGE_SIZE, "0x%08x\n", id->mpos);
return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mpos);
} else if (strcmp(attr->name, "media_capabilities") == 0) {
return scnprintf(page, PAGE_SIZE, "0x%08x\n", id->mccap);
return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mccap);
} else if (strcmp(attr->name, "max_phys_secs") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", NVM_MAX_VLBA);
} else {
return scnprintf(page,
PAGE_SIZE,
"Unhandled attr(%s) in `nvm_dev_attr_show_12`\n",
attr->name);
return scnprintf(page, PAGE_SIZE,
"Unhandled attr(%s) in `nvm_dev_attr_show_12`\n",
attr->name);
}
}
@ -952,42 +1009,40 @@ 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_geo *geo = &ndev->geo;
struct attribute *attr;
if (!ndev)
return 0;
id = &ndev->identity;
attr = &dattr->attr;
if (strcmp(attr->name, "groups") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->num_ch);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->nr_chnls);
} else if (strcmp(attr->name, "punits") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->num_lun);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->nr_luns);
} else if (strcmp(attr->name, "chunks") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->num_chk);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->nr_chks);
} else if (strcmp(attr->name, "clba") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->clba);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->clba);
} else if (strcmp(attr->name, "ws_min") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->ws_min);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_min);
} else if (strcmp(attr->name, "ws_opt") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->ws_opt);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_opt);
} else if (strcmp(attr->name, "mw_cunits") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->mw_cunits);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->mw_cunits);
} else if (strcmp(attr->name, "write_typ") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->tprt);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt);
} else if (strcmp(attr->name, "write_max") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->tprm);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm);
} else if (strcmp(attr->name, "reset_typ") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->tbet);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet);
} else if (strcmp(attr->name, "reset_max") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->tbem);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem);
} else {
return scnprintf(page,
PAGE_SIZE,
"Unhandled attr(%s) in `nvm_dev_attr_show_20`\n",
attr->name);
return scnprintf(page, PAGE_SIZE,
"Unhandled attr(%s) in `nvm_dev_attr_show_20`\n",
attr->name);
}
}
@ -1106,10 +1161,13 @@ 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_geo *geo = &ndev->geo;
if (!ndev)
return -EINVAL;
switch (ns->ndev->identity.ver_id) {
switch (geo->ver_id) {
case 1:
return sysfs_create_group(&disk_to_dev(ns->disk)->kobj,
&nvm_dev_attr_group_12);
@ -1123,7 +1181,10 @@ 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_geo *geo = &ndev->geo;
switch (geo->ver_id) {
case 1:
sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
&nvm_dev_attr_group_12);

196
include/linux/lightnvm.h
View File

@ -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;
u8 ch_offset;
u8 lun_offset;
u8 blk_offset;
u8 pg_offset;
u8 pln_offset;
u8 sect_offset;
u64 ch_mask;
u64 lun_mask;
u64 blk_mask;
u64 pg_mask;
u64 pln_mask;
u64 sec_mask;
};
struct nvm_id {
u8 ver_id;
u8 vmnt;
u32 cap;
u32 dom;
struct nvm_addrf {
u8 ch_len;
u8 lun_len;
u8 chk_len;
u8 sec_len;
u8 rsv_len[2];
struct nvm_addr_format ppaf;
u8 ch_offset;
u8 lun_offset;
u8 chk_offset;
u8 sec_offset;
u8 rsv_off[2];
u8 num_ch;
u8 num_lun;
u16 num_chk;
u16 clba;
u16 csecs;
u16 sos;
u32 ws_min;
u32 ws_opt;
u32 mw_cunits;
u32 trdt;
u32 trdm;
u32 tprt;
u32 tprm;
u32 tbet;
u32 tbem;
u32 mpos;
u32 mccap;
u16 cpar;
/* calculated values */
u16 ws_seq;
u16 ws_per_chk;
/* 1.2 compatibility */
u8 mtype;
u8 fmtype;
u8 num_pln;
u16 num_pg;
u16 fpg_sz;
} __packed;
u64 ch_mask;
u64 lun_mask;
u64 chk_mask;
u64 sec_mask;
u64 rsv_mask[2];
};
struct nvm_target {
struct list_head list;
@ -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 sec_per_chk;
int sec_per_lun;
int op; /* over-provision in instance */
int ws_min;
int ws_opt;
int ws_seq;
int ws_per_chk;
sector_t total_secs; /* across channels */
int op;
/* chunk geometry */
u32 nr_chks; /* chunks per lun */
u32 clba; /* sectors per chunk */
u16 csecs; /* sector size */
u16 sos; /* out-of-band area size */
struct nvm_addr_format ppaf;
/* device write constrains */
u32 ws_min; /* minimum write size */
u32 ws_opt; /* optimal write size */
u32 mw_cunits; /* distance required for successful read */
/* Legacy 1.2 specific geometry */
int plane_mode; /* drive device in single, double or quad mode */
int nr_planes;
int sec_per_pg; /* only sectors for a single page */
int sec_per_pl; /* all sectors across planes */
/* device capabilities */
u32 mccap;
/* device timings */
u32 trdt; /* Avg. Tread (ns) */
u32 trdm; /* Max Tread (ns) */
u32 tprt; /* Avg. Tprog (ns) */
u32 tprm; /* Max Tprog (ns) */
u32 tbet; /* Avg. Terase (ns) */
u32 tbem; /* Max Terase (ns) */
/* generic address format */
struct nvm_addrf addrf;
/* 1.2 compatibility */
u8 vmnt;
u32 cap;
u32 dom;
u8 mtype;
u8 fmtype;
u16 cpar;
u32 mpos;
u8 num_pln;
u8 plane_mode;
u16 num_pg;
u16 fpg_sz;
};
/* sub-device structure */
@ -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;
}