Currently pblk assumes that size of OOB metadata on drive is always
equal to size of pblk_sec_meta struct. This commit add helpers which will
allow to handle different sizes of OOB metadata on drive.
Signed-off-by: Igor Konopko <igor.j.konopko@xxxxxxxxx>
---
drivers/lightnvm/pblk-core.c | 6 ++---
drivers/lightnvm/pblk-map.c | 21 ++++++++++------
drivers/lightnvm/pblk-read.c | 41 +++++++++++++++++++-------------
drivers/lightnvm/pblk-recovery.c | 14 ++++++-----
drivers/lightnvm/pblk.h | 37 +++++++++++++++++++++++++++-
5 files changed, 86 insertions(+), 33 deletions(-)
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index 6944aac43b01..7cb39d84c833 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -743,7 +743,6 @@ int pblk_line_smeta_read(struct pblk *pblk, struct pblk_line *line)
rqd.opcode = NVM_OP_PREAD;
rqd.nr_ppas = lm->smeta_sec;
rqd.is_seq = 1;
-
for (i = 0; i < lm->smeta_sec; i++, paddr++)
rqd.ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line->id);
@@ -796,10 +795,11 @@ static int pblk_line_smeta_write(struct pblk *pblk, struct pblk_line *line,
rqd.is_seq = 1;
for (i = 0; i < lm->smeta_sec; i++, paddr++) {
- struct pblk_sec_meta *meta_list = rqd.meta_list;
+ void *meta_list = rqd.meta_list;
rqd.ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line->id);
- meta_list[i].lba = lba_list[paddr] = addr_empty;
+ pblk_set_meta_lba(pblk, meta_list, i, ADDR_EMPTY);
+ lba_list[paddr] = addr_empty;
}
ret = pblk_submit_io_sync_sem(pblk, &rqd);
diff --git a/drivers/lightnvm/pblk-map.c b/drivers/lightnvm/pblk-map.c
index 6dcbd44e3acb..4c7a9909308e 100644
--- a/drivers/lightnvm/pblk-map.c
+++ b/drivers/lightnvm/pblk-map.c
@@ -22,7 +22,7 @@
static int pblk_map_page_data(struct pblk *pblk, unsigned int sentry,
struct ppa_addr *ppa_list,
unsigned long *lun_bitmap,
- struct pblk_sec_meta *meta_list,
+ void *meta_list,
unsigned int valid_secs)
{
struct pblk_line *line = pblk_line_get_data(pblk);
@@ -68,14 +68,15 @@ static int pblk_map_page_data(struct pblk *pblk, unsigned int sentry,
kref_get(&line->ref);
w_ctx = pblk_rb_w_ctx(&pblk->rwb, sentry + i);
w_ctx->ppa = ppa_list[i];
- meta_list[i].lba = cpu_to_le64(w_ctx->lba);
+ pblk_set_meta_lba(pblk, meta_list, i, w_ctx->lba);
lba_list[paddr] = cpu_to_le64(w_ctx->lba);
if (lba_list[paddr] != addr_empty)
line->nr_valid_lbas++;
else
atomic64_inc(&pblk->pad_wa);
} else {
- lba_list[paddr] = meta_list[i].lba = addr_empty;
+ lba_list[paddr] = addr_empty;
+ pblk_set_meta_lba(pblk, meta_list, i, ADDR_EMPTY);
__pblk_map_invalidate(pblk, line, paddr);
}
}
@@ -88,7 +89,7 @@ void pblk_map_rq(struct pblk *pblk, struct nvm_rq *rqd, unsigned int sentry,
unsigned long *lun_bitmap, unsigned int valid_secs,
unsigned int off)
{
- struct pblk_sec_meta *meta_list = rqd->meta_list;
+ void *meta_list = rqd->meta_list;
struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
unsigned int map_secs;
int min = pblk->min_write_pgs;
@@ -97,7 +98,10 @@ void pblk_map_rq(struct pblk *pblk, struct nvm_rq *rqd, unsigned int sentry,
for (i = off; i < rqd->nr_ppas; i += min) {
map_secs = (i + min > valid_secs) ? (valid_secs % min) : min;
if (pblk_map_page_data(pblk, sentry + i, &ppa_list[i],
- lun_bitmap, &meta_list[i], map_secs)) {
+ lun_bitmap,
+ pblk_get_meta_buffer(pblk,
+ meta_list, i),
+ map_secs)) {
bio_put(rqd->bio);
pblk_free_rqd(pblk, rqd, PBLK_WRITE);
pblk_pipeline_stop(pblk);
@@ -113,7 +117,7 @@ void pblk_map_erase_rq(struct pblk *pblk, struct nvm_rq *rqd,
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
struct pblk_line_meta *lm = &pblk->lm;
- struct pblk_sec_meta *meta_list = rqd->meta_list;
+ void *meta_list = rqd->meta_list;
struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
struct pblk_line *e_line, *d_line;
unsigned int map_secs;
@@ -123,7 +127,10 @@ void pblk_map_erase_rq(struct pblk *pblk, struct nvm_rq *rqd,
for (i = 0; i < rqd->nr_ppas; i += min) {
map_secs = (i + min > valid_secs) ? (valid_secs % min) : min;
if (pblk_map_page_data(pblk, sentry + i, &ppa_list[i],
- lun_bitmap, &meta_list[i], map_secs)) {
+ lun_bitmap,
+ pblk_get_meta_buffer(pblk,
+ meta_list, i),
+ map_secs)) {
bio_put(rqd->bio);
pblk_free_rqd(pblk, rqd, PBLK_WRITE);
pblk_pipeline_stop(pblk);
diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c
index 08f6ebd4bc48..6584a2588f61 100644
--- a/drivers/lightnvm/pblk-read.c
+++ b/drivers/lightnvm/pblk-read.c
@@ -43,7 +43,7 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd,
struct bio *bio, sector_t blba,
unsigned long *read_bitmap)
{
- struct pblk_sec_meta *meta_list = rqd->meta_list;
+ void *meta_list = rqd->meta_list;
struct ppa_addr ppas[NVM_MAX_VLBA];
int nr_secs = rqd->nr_ppas;
bool advanced_bio = false;
@@ -58,7 +58,7 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd,
retry:
if (pblk_ppa_empty(p)) {
WARN_ON(test_and_set_bit(i, read_bitmap));
- meta_list[i].lba = cpu_to_le64(ADDR_EMPTY);
+ pblk_set_meta_lba(pblk, meta_list, i, ADDR_EMPTY);
if (unlikely(!advanced_bio)) {
bio_advance(bio, (i) * PBLK_EXPOSED_PAGE_SIZE);
@@ -78,7 +78,7 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd,
goto retry;
}
WARN_ON(test_and_set_bit(i, read_bitmap));
- meta_list[i].lba = cpu_to_le64(lba);
+ pblk_set_meta_lba(pblk, meta_list, i, lba);
advanced_bio = true;
#ifdef CONFIG_NVM_PBLK_DEBUG
atomic_long_inc(&pblk->cache_reads);
@@ -105,12 +105,15 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd,
static void pblk_read_check_seq(struct pblk *pblk, struct nvm_rq *rqd,
sector_t blba)
{
- struct pblk_sec_meta *meta_lba_list = rqd->meta_list;
+ void *meta_list = rqd->meta_list;
int nr_lbas = rqd->nr_ppas;
int i;
+ if (!pblk_is_oob_meta_supported(pblk))
+ return;
+
for (i = 0; i < nr_lbas; i++) {
- u64 lba = le64_to_cpu(meta_lba_list[i].lba);
+ u64 lba = pblk_get_meta_lba(pblk, meta_list, i);
if (lba == ADDR_EMPTY)
continue;
@@ -134,9 +137,12 @@ static void pblk_read_check_seq(struct pblk *pblk, struct nvm_rq *rqd,
static void pblk_read_check_rand(struct pblk *pblk, struct nvm_rq *rqd,
u64 *lba_list, int nr_lbas)
{
- struct pblk_sec_meta *meta_lba_list = rqd->meta_list;
+ void *meta_lba_list = rqd->meta_list;
int i, j;
+ if (!pblk_is_oob_meta_supported(pblk))
+ return;
+
for (i = 0, j = 0; i < nr_lbas; i++) {
u64 lba = lba_list[i];
u64 meta_lba;
@@ -144,7 +150,7 @@ static void pblk_read_check_rand(struct pblk *pblk, struct nvm_rq *rqd,
if (lba == ADDR_EMPTY)
continue;
- meta_lba = le64_to_cpu(meta_lba_list[j].lba);
+ meta_lba = pblk_get_meta_lba(pblk, meta_lba_list, j);
if (lba != meta_lba) {
#ifdef CONFIG_NVM_PBLK_DEBUG
@@ -219,7 +225,7 @@ static void pblk_end_partial_read(struct nvm_rq *rqd)
struct bio *new_bio = rqd->bio;
struct bio *bio = pr_ctx->orig_bio;
struct bio_vec src_bv, dst_bv;
- struct pblk_sec_meta *meta_list = rqd->meta_list;
+ void *meta_list = rqd->meta_list;
int bio_init_idx = pr_ctx->bio_init_idx;
unsigned long *read_bitmap = pr_ctx->bitmap;
int nr_secs = pr_ctx->orig_nr_secs;
@@ -237,8 +243,10 @@ static void pblk_end_partial_read(struct nvm_rq *rqd)
}
for (i = 0; i < nr_secs; i++) {
- pr_ctx->lba_list_media[i] = meta_list[i].lba;
- meta_list[i].lba = pr_ctx->lba_list_mem[i];
+ pr_ctx->lba_list_media[i] = pblk_get_meta_lba(pblk,
+ meta_list, i);
+ pblk_set_meta_lba(pblk, meta_list, i,
+ pr_ctx->lba_list_mem[i]);
}
/* Fill the holes in the original bio */
@@ -250,7 +258,8 @@ static void pblk_end_partial_read(struct nvm_rq *rqd)
line = pblk_ppa_to_line(pblk, rqd->ppa_list[i]);
kref_put(&line->ref, pblk_line_put);
- meta_list[hole].lba = pr_ctx->lba_list_media[i];
+ pblk_set_meta_lba(pblk, meta_list, hole,
+ pr_ctx->lba_list_media[i]);
src_bv = new_bio->bi_io_vec[i++];
dst_bv = bio->bi_io_vec[bio_init_idx + hole];
@@ -286,7 +295,7 @@ static int pblk_setup_partial_read(struct pblk *pblk, struct nvm_rq *rqd,
unsigned long *read_bitmap,
int nr_holes)
{
- struct pblk_sec_meta *meta_list = rqd->meta_list;
+ void *meta_list = rqd->meta_list;
struct pblk_g_ctx *r_ctx = nvm_rq_to_pdu(rqd);
struct pblk_pr_ctx *pr_ctx;
struct bio *new_bio, *bio = r_ctx->private;
@@ -308,7 +317,7 @@ static int pblk_setup_partial_read(struct pblk *pblk, struct nvm_rq *rqd,
goto fail_free_pages;
for (i = 0; i < nr_secs; i++)
- pr_ctx->lba_list_mem[i] = meta_list[i].lba;
+ pr_ctx->lba_list_mem[i] = pblk_get_meta_lba(pblk, meta_list, i);
new_bio->bi_iter.bi_sector = 0; /* internal bio */
bio_set_op_attrs(new_bio, REQ_OP_READ, 0);
@@ -373,7 +382,7 @@ static int pblk_partial_read_bio(struct pblk *pblk, struct nvm_rq *rqd,
static void pblk_read_rq(struct pblk *pblk, struct nvm_rq *rqd, struct bio *bio,
sector_t lba, unsigned long *read_bitmap)
{
- struct pblk_sec_meta *meta_list = rqd->meta_list;
+ void *meta_list = rqd->meta_list;
struct ppa_addr ppa;
pblk_lookup_l2p_seq(pblk, &ppa, lba, 1);
@@ -385,7 +394,7 @@ static void pblk_read_rq(struct pblk *pblk, struct nvm_rq *rqd, struct bio *bio,
retry:
if (pblk_ppa_empty(ppa)) {
WARN_ON(test_and_set_bit(0, read_bitmap));
- meta_list[0].lba = cpu_to_le64(ADDR_EMPTY);
+ pblk_set_meta_lba(pblk, meta_list, 0, ADDR_EMPTY);
return;
}
@@ -399,7 +408,7 @@ static void pblk_read_rq(struct pblk *pblk, struct nvm_rq *rqd, struct bio *bio,
}
WARN_ON(test_and_set_bit(0, read_bitmap));
- meta_list[0].lba = cpu_to_le64(lba);
+ pblk_set_meta_lba(pblk, meta_list, 0, lba);
#ifdef CONFIG_NVM_PBLK_DEBUG
atomic_long_inc(&pblk->cache_reads);
diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
index 5740b7509bd8..fa63f9fa5ba8 100644
--- a/drivers/lightnvm/pblk-recovery.c
+++ b/drivers/lightnvm/pblk-recovery.c
@@ -124,7 +124,7 @@ static u64 pblk_sec_in_open_line(struct pblk *pblk, struct pblk_line *line)
struct pblk_recov_alloc {
struct ppa_addr *ppa_list;
- struct pblk_sec_meta *meta_list;
+ void *meta_list;
struct nvm_rq *rqd;
void *data;
dma_addr_t dma_ppa_list;
@@ -158,7 +158,7 @@ static int pblk_recov_pad_line(struct pblk *pblk, struct pblk_line *line,
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
- struct pblk_sec_meta *meta_list;
+ void *meta_list;
struct pblk_pad_rq *pad_rq;
struct nvm_rq *rqd;
struct bio *bio;
@@ -242,7 +242,8 @@ static int pblk_recov_pad_line(struct pblk *pblk, struct pblk_line *line,
dev_ppa = addr_to_gen_ppa(pblk, w_ptr, line->id);
pblk_map_invalidate(pblk, dev_ppa);
- lba_list[w_ptr] = meta_list[i].lba = addr_empty;
+ lba_list[w_ptr] = addr_empty;
+ pblk_set_meta_lba(pblk, meta_list, i, ADDR_EMPTY);
rqd->ppa_list[i] = dev_ppa;
}
}
@@ -325,6 +326,7 @@ static int pblk_line_wp_is_unbalanced(struct pblk *pblk,
return 1;
else if (chunk->wp < line_wp)
line_wp = chunk->wp;
+
}
return 0;
@@ -336,7 +338,7 @@ static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line,
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
struct ppa_addr *ppa_list;
- struct pblk_sec_meta *meta_list;
+ void *meta_list;
struct nvm_rq *rqd;
struct bio *bio;
void *data;
@@ -434,7 +436,7 @@ static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line,
}
for (i = 0; i < rqd->nr_ppas; i++) {
- u64 lba = le64_to_cpu(meta_list[i].lba);
+ u64 lba = pblk_get_meta_lba(pblk, meta_list, i);
lba_list[paddr++] = cpu_to_le64(lba);
@@ -463,7 +465,7 @@ static int pblk_recov_l2p_from_oob(struct pblk *pblk, struct pblk_line *line)
struct nvm_geo *geo = &dev->geo;
struct nvm_rq *rqd;
struct ppa_addr *ppa_list;
- struct pblk_sec_meta *meta_list;
+ void *meta_list;
struct pblk_recov_alloc p;
void *data;
dma_addr_t dma_ppa_list, dma_meta_list;
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index aea09879636f..53156b6f99a3 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -87,7 +87,6 @@ enum {
};
struct pblk_sec_meta {
- u64 reserved;
__le64 lba;
};
@@ -1366,4 +1365,40 @@ static inline char *pblk_disk_name(struct pblk *pblk)
return disk->disk_name;
}
+
+static inline int pblk_is_oob_meta_supported(struct pblk *pblk)
+{
+ struct nvm_tgt_dev *dev = pblk->dev;
+ struct nvm_geo *geo = &dev->geo;
+
+ /* Pblk uses OOB meta to store LBA of given physical sector.
+ * The LBA is eventually used in recovery mode and/or for handling
+ * telemetry events (e.g., relocate sector).
+ */
+
+ return (geo->sos >= sizeof(struct pblk_sec_meta));
+}
+
+static inline struct pblk_sec_meta *pblk_get_meta_buffer(struct pblk *pblk,
+ void *meta_ptr,
+ int index)
+{
+ struct nvm_tgt_dev *dev = pblk->dev;
+ struct nvm_geo *geo = &dev->geo;
+
+ return meta_ptr + max_t(int, geo->sos, sizeof(struct pblk_sec_meta))
+ * index;
+}
+
+static inline void pblk_set_meta_lba(struct pblk *pblk, void *meta_ptr,
+ int index, u64 lba)
+{
+ pblk_get_meta_buffer(pblk, meta_ptr, index)->lba = cpu_to_le64(lba);
+}
+
+static inline u64 pblk_get_meta_lba(struct pblk *pblk, void *meta_ptr,
+ int index)
+{
+ return le64_to_cpu(pblk_get_meta_buffer(pblk, meta_ptr, index)->lba);
+}
#endif /* PBLK_H_ */
--
2.17.1
