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-rw-r--r--include/linux/lightnvm.h166
1 files changed, 156 insertions, 10 deletions
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index e9e0d1c7eaf5..2fdeac1a420d 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -86,8 +86,8 @@ struct nvm_chk_meta;
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_get_chk_meta_fn)(struct nvm_dev *, struct nvm_chk_meta *,
- sector_t, int);
+typedef int (nvm_get_chk_meta_fn)(struct nvm_dev *, sector_t, int,
+ struct nvm_chk_meta *);
typedef int (nvm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *);
typedef int (nvm_submit_io_sync_fn)(struct nvm_dev *, struct nvm_rq *);
typedef void *(nvm_create_dma_pool_fn)(struct nvm_dev *, char *);
@@ -305,6 +305,8 @@ struct nvm_rq {
u64 ppa_status; /* ppa media status */
int error;
+ int is_seq; /* Sequential hint flag. 1.2 only */
+
void *private;
};
@@ -318,6 +320,11 @@ static inline void *nvm_rq_to_pdu(struct nvm_rq *rqdata)
return rqdata + 1;
}
+static inline struct ppa_addr *nvm_rq_to_ppa_list(struct nvm_rq *rqd)
+{
+ return (rqd->nr_ppas > 1) ? rqd->ppa_list : &rqd->ppa_addr;
+}
+
enum {
NVM_BLK_ST_FREE = 0x1, /* Free block */
NVM_BLK_ST_TGT = 0x2, /* Block in use by target */
@@ -485,6 +492,144 @@ static inline struct ppa_addr dev_to_generic_addr(struct nvm_dev *dev,
return l;
}
+static inline u64 dev_to_chunk_addr(struct nvm_dev *dev, void *addrf,
+ struct ppa_addr p)
+{
+ struct nvm_geo *geo = &dev->geo;
+ u64 caddr;
+
+ if (geo->version == NVM_OCSSD_SPEC_12) {
+ struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)addrf;
+
+ caddr = (u64)p.g.pg << ppaf->pg_offset;
+ caddr |= (u64)p.g.pl << ppaf->pln_offset;
+ caddr |= (u64)p.g.sec << ppaf->sec_offset;
+ } else {
+ caddr = p.m.sec;
+ }
+
+ return caddr;
+}
+
+static inline struct ppa_addr nvm_ppa32_to_ppa64(struct nvm_dev *dev,
+ void *addrf, u32 ppa32)
+{
+ struct ppa_addr ppa64;
+
+ ppa64.ppa = 0;
+
+ if (ppa32 == -1) {
+ ppa64.ppa = ADDR_EMPTY;
+ } else if (ppa32 & (1U << 31)) {
+ ppa64.c.line = ppa32 & ((~0U) >> 1);
+ ppa64.c.is_cached = 1;
+ } else {
+ struct nvm_geo *geo = &dev->geo;
+
+ if (geo->version == NVM_OCSSD_SPEC_12) {
+ struct nvm_addrf_12 *ppaf = addrf;
+
+ 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->sec_offset;
+ } else {
+ struct nvm_addrf *lbaf = addrf;
+
+ ppa64.m.grp = (ppa32 & lbaf->ch_mask) >>
+ lbaf->ch_offset;
+ ppa64.m.pu = (ppa32 & lbaf->lun_mask) >>
+ lbaf->lun_offset;
+ ppa64.m.chk = (ppa32 & lbaf->chk_mask) >>
+ lbaf->chk_offset;
+ ppa64.m.sec = (ppa32 & lbaf->sec_mask) >>
+ lbaf->sec_offset;
+ }
+ }
+
+ return ppa64;
+}
+
+static inline u32 nvm_ppa64_to_ppa32(struct nvm_dev *dev,
+ void *addrf, struct ppa_addr ppa64)
+{
+ u32 ppa32 = 0;
+
+ if (ppa64.ppa == ADDR_EMPTY) {
+ ppa32 = ~0U;
+ } else if (ppa64.c.is_cached) {
+ ppa32 |= ppa64.c.line;
+ ppa32 |= 1U << 31;
+ } else {
+ struct nvm_geo *geo = &dev->geo;
+
+ if (geo->version == NVM_OCSSD_SPEC_12) {
+ struct nvm_addrf_12 *ppaf = addrf;
+
+ 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->sec_offset;
+ } else {
+ struct nvm_addrf *lbaf = addrf;
+
+ ppa32 |= ppa64.m.grp << lbaf->ch_offset;
+ ppa32 |= ppa64.m.pu << lbaf->lun_offset;
+ ppa32 |= ppa64.m.chk << lbaf->chk_offset;
+ ppa32 |= ppa64.m.sec << lbaf->sec_offset;
+ }
+ }
+
+ return ppa32;
+}
+
+static inline int nvm_next_ppa_in_chk(struct nvm_tgt_dev *dev,
+ struct ppa_addr *ppa)
+{
+ struct nvm_geo *geo = &dev->geo;
+ int last = 0;
+
+ if (geo->version == NVM_OCSSD_SPEC_12) {
+ int sec = ppa->g.sec;
+
+ sec++;
+ if (sec == geo->ws_min) {
+ int pg = ppa->g.pg;
+
+ sec = 0;
+ pg++;
+ if (pg == geo->num_pg) {
+ int pl = ppa->g.pl;
+
+ pg = 0;
+ pl++;
+ if (pl == geo->num_pln)
+ last = 1;
+
+ ppa->g.pl = pl;
+ }
+ ppa->g.pg = pg;
+ }
+ ppa->g.sec = sec;
+ } else {
+ ppa->m.sec++;
+ if (ppa->m.sec == geo->clba)
+ last = 1;
+ }
+
+ return last;
+}
+
typedef blk_qc_t (nvm_tgt_make_rq_fn)(struct request_queue *, struct bio *);
typedef sector_t (nvm_tgt_capacity_fn)(void *);
typedef void *(nvm_tgt_init_fn)(struct nvm_tgt_dev *, struct gendisk *,
@@ -493,9 +638,15 @@ typedef void (nvm_tgt_exit_fn)(void *, bool);
typedef int (nvm_tgt_sysfs_init_fn)(struct gendisk *);
typedef void (nvm_tgt_sysfs_exit_fn)(struct gendisk *);
+enum {
+ NVM_TGT_F_DEV_L2P = 0,
+ NVM_TGT_F_HOST_L2P = 1 << 0,
+};
+
struct nvm_tgt_type {
const char *name;
unsigned int version[3];
+ int flags;
/* target entry points */
nvm_tgt_make_rq_fn *make_rq;
@@ -524,18 +675,13 @@ extern struct nvm_dev *nvm_alloc_dev(int);
extern int nvm_register(struct nvm_dev *);
extern void nvm_unregister(struct nvm_dev *);
-
-extern int nvm_get_chunk_meta(struct nvm_tgt_dev *tgt_dev,
- struct nvm_chk_meta *meta, struct ppa_addr ppa,
- int nchks);
-
-extern int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *, struct ppa_addr *,
+extern int nvm_get_chunk_meta(struct nvm_tgt_dev *, struct ppa_addr,
+ int, struct nvm_chk_meta *);
+extern int nvm_set_chunk_meta(struct nvm_tgt_dev *, struct ppa_addr *,
int, int);
extern int nvm_submit_io(struct nvm_tgt_dev *, struct nvm_rq *);
extern int nvm_submit_io_sync(struct nvm_tgt_dev *, struct nvm_rq *);
extern void nvm_end_io(struct nvm_rq *);
-extern int nvm_bb_tbl_fold(struct nvm_dev *, u8 *, int);
-extern int nvm_get_tgt_bb_tbl(struct nvm_tgt_dev *, struct ppa_addr, u8 *);
#else /* CONFIG_NVM */
struct nvm_dev_ops;