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-rw-r--r--include/linux/lightnvm.h133
1 files changed, 72 insertions, 61 deletions
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index 89c695483d55..1f1588c2557e 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -211,7 +211,7 @@ struct nvm_id {
struct nvm_target {
struct list_head list;
struct list_head lun_list;
- struct nvm_dev *dev;
+ struct nvm_tgt_dev *dev;
struct nvm_tgt_type *type;
struct gendisk *disk;
};
@@ -286,7 +286,6 @@ struct nvm_lun {
* free_list and used_list
*/
unsigned int nr_free_blocks; /* Number of unused blocks */
- int reserved_blocks;
struct nvm_block *blocks;
};
@@ -315,22 +314,12 @@ struct nvm_sb_info {
struct ppa_addr fs_ppa;
};
-struct nvm_dev {
- struct nvm_dev_ops *ops;
-
- struct list_head devices;
-
- /* Media manager */
- struct nvmm_type *mt;
- void *mp;
-
- /* System blocks */
- struct nvm_sb_info sb;
-
- /* Device information */
+/* Device generic information */
+struct nvm_geo {
int nr_chnls;
+ int nr_luns;
+ int luns_per_chnl; /* -1 if channels are not symmetric */
int nr_planes;
- int luns_per_chnl;
int sec_per_pg; /* only sectors for a single page */
int pgs_per_blk;
int blks_per_lun;
@@ -350,14 +339,43 @@ struct nvm_dev {
int sec_per_pl; /* all sectors across planes */
int sec_per_blk;
int sec_per_lun;
+};
+
+struct nvm_tgt_dev {
+ /* Device information */
+ struct nvm_geo geo;
+
+ sector_t total_secs;
+
+ struct nvm_id identity;
+ struct request_queue *q;
+
+ struct nvmm_type *mt;
+ struct nvm_dev_ops *ops;
+
+ void *parent;
+};
+
+struct nvm_dev {
+ struct nvm_dev_ops *ops;
+
+ struct list_head devices;
+
+ /* Media manager */
+ struct nvmm_type *mt;
+ void *mp;
+
+ /* System blocks */
+ struct nvm_sb_info sb;
+
+ /* Device information */
+ struct nvm_geo geo;
/* lower page table */
int lps_per_blk;
int *lptbl;
- unsigned long total_blocks;
unsigned long total_secs;
- int nr_luns;
unsigned long *lun_map;
void *dma_pool;
@@ -373,7 +391,7 @@ struct nvm_dev {
spinlock_t lock;
};
-static inline struct ppa_addr linear_to_generic_addr(struct nvm_dev *dev,
+static inline struct ppa_addr linear_to_generic_addr(struct nvm_geo *geo,
struct ppa_addr r)
{
struct ppa_addr l;
@@ -382,22 +400,22 @@ static inline struct ppa_addr linear_to_generic_addr(struct nvm_dev *dev,
l.ppa = 0;
- div_u64_rem(ppa, dev->sec_per_pg, &secs);
+ div_u64_rem(ppa, geo->sec_per_pg, &secs);
l.g.sec = secs;
- sector_div(ppa, dev->sec_per_pg);
- div_u64_rem(ppa, dev->pgs_per_blk, &pgs);
+ sector_div(ppa, geo->sec_per_pg);
+ div_u64_rem(ppa, geo->pgs_per_blk, &pgs);
l.g.pg = pgs;
- sector_div(ppa, dev->pgs_per_blk);
- div_u64_rem(ppa, dev->blks_per_lun, &blks);
+ sector_div(ppa, geo->pgs_per_blk);
+ div_u64_rem(ppa, geo->blks_per_lun, &blks);
l.g.blk = blks;
- sector_div(ppa, dev->blks_per_lun);
- div_u64_rem(ppa, dev->luns_per_chnl, &luns);
+ sector_div(ppa, geo->blks_per_lun);
+ div_u64_rem(ppa, geo->luns_per_chnl, &luns);
l.g.lun = luns;
- sector_div(ppa, dev->luns_per_chnl);
+ sector_div(ppa, geo->luns_per_chnl);
l.g.ch = ppa;
return l;
@@ -406,14 +424,15 @@ static inline struct ppa_addr linear_to_generic_addr(struct nvm_dev *dev,
static inline struct ppa_addr generic_to_dev_addr(struct nvm_dev *dev,
struct ppa_addr r)
{
+ struct nvm_geo *geo = &dev->geo;
struct ppa_addr l;
- l.ppa = ((u64)r.g.blk) << dev->ppaf.blk_offset;
- l.ppa |= ((u64)r.g.pg) << dev->ppaf.pg_offset;
- l.ppa |= ((u64)r.g.sec) << dev->ppaf.sect_offset;
- l.ppa |= ((u64)r.g.pl) << dev->ppaf.pln_offset;
- l.ppa |= ((u64)r.g.lun) << dev->ppaf.lun_offset;
- l.ppa |= ((u64)r.g.ch) << dev->ppaf.ch_offset;
+ 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;
return l;
}
@@ -421,24 +440,25 @@ static inline struct ppa_addr generic_to_dev_addr(struct nvm_dev *dev,
static inline struct ppa_addr dev_to_generic_addr(struct nvm_dev *dev,
struct ppa_addr r)
{
+ struct nvm_geo *geo = &dev->geo;
struct ppa_addr l;
l.ppa = 0;
/*
* (r.ppa << X offset) & X len bitmask. X eq. blk, pg, etc.
*/
- l.g.blk = (r.ppa >> dev->ppaf.blk_offset) &
- (((1 << dev->ppaf.blk_len) - 1));
- l.g.pg |= (r.ppa >> dev->ppaf.pg_offset) &
- (((1 << dev->ppaf.pg_len) - 1));
- l.g.sec |= (r.ppa >> dev->ppaf.sect_offset) &
- (((1 << dev->ppaf.sect_len) - 1));
- l.g.pl |= (r.ppa >> dev->ppaf.pln_offset) &
- (((1 << dev->ppaf.pln_len) - 1));
- l.g.lun |= (r.ppa >> dev->ppaf.lun_offset) &
- (((1 << dev->ppaf.lun_len) - 1));
- l.g.ch |= (r.ppa >> dev->ppaf.ch_offset) &
- (((1 << dev->ppaf.ch_len) - 1));
+ 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));
return l;
}
@@ -456,11 +476,12 @@ static inline void ppa_set_empty(struct ppa_addr *ppa_addr)
static inline struct ppa_addr block_to_ppa(struct nvm_dev *dev,
struct nvm_block *blk)
{
+ struct nvm_geo *geo = &dev->geo;
struct ppa_addr ppa;
struct nvm_lun *lun = blk->lun;
ppa.ppa = 0;
- ppa.g.blk = blk->id % dev->blks_per_lun;
+ ppa.g.blk = blk->id % geo->blks_per_lun;
ppa.g.lun = lun->lun_id;
ppa.g.ch = lun->chnl_id;
@@ -483,7 +504,8 @@ static inline int ppa_to_slc(struct nvm_dev *dev, int slc_pg)
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_dev *, struct gendisk *, int, int);
+typedef void *(nvm_tgt_init_fn)(struct nvm_tgt_dev *, struct gendisk *, int,
+ int);
typedef void (nvm_tgt_exit_fn)(void *);
struct nvm_tgt_type {
@@ -516,9 +538,6 @@ typedef void (nvmm_unregister_fn)(struct nvm_dev *);
typedef int (nvmm_create_tgt_fn)(struct nvm_dev *, struct nvm_ioctl_create *);
typedef int (nvmm_remove_tgt_fn)(struct nvm_dev *, struct nvm_ioctl_remove *);
-typedef struct nvm_block *(nvmm_get_blk_fn)(struct nvm_dev *,
- struct nvm_lun *, unsigned long);
-typedef void (nvmm_put_blk_fn)(struct nvm_dev *, struct nvm_block *);
typedef int (nvmm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *);
typedef int (nvmm_erase_blk_fn)(struct nvm_dev *, struct nvm_block *, int);
typedef void (nvmm_mark_blk_fn)(struct nvm_dev *, struct ppa_addr, int);
@@ -538,10 +557,6 @@ struct nvmm_type {
nvmm_create_tgt_fn *create_tgt;
nvmm_remove_tgt_fn *remove_tgt;
- /* Block administration callbacks */
- nvmm_get_blk_fn *get_blk;
- nvmm_put_blk_fn *put_blk;
-
nvmm_submit_io_fn *submit_io;
nvmm_erase_blk_fn *erase_blk;
@@ -563,10 +578,6 @@ struct nvmm_type {
extern int nvm_register_mgr(struct nvmm_type *);
extern void nvm_unregister_mgr(struct nvmm_type *);
-extern struct nvm_block *nvm_get_blk(struct nvm_dev *, struct nvm_lun *,
- unsigned long);
-extern void nvm_put_blk(struct nvm_dev *, struct nvm_block *);
-
extern struct nvm_dev *nvm_alloc_dev(int);
extern int nvm_register(struct nvm_dev *);
extern void nvm_unregister(struct nvm_dev *);
@@ -611,10 +622,10 @@ extern int nvm_init_sysblock(struct nvm_dev *, struct nvm_sb_info *);
extern int nvm_dev_factory(struct nvm_dev *, int flags);
-#define nvm_for_each_lun_ppa(dev, ppa, chid, lunid) \
- for ((chid) = 0, (ppa).ppa = 0; (chid) < (dev)->nr_chnls; \
+#define nvm_for_each_lun_ppa(geo, ppa, chid, lunid) \
+ for ((chid) = 0, (ppa).ppa = 0; (chid) < (geo)->nr_chnls; \
(chid)++, (ppa).g.ch = (chid)) \
- for ((lunid) = 0; (lunid) < (dev)->luns_per_chnl; \
+ for ((lunid) = 0; (lunid) < (geo)->luns_per_chnl; \
(lunid)++, (ppa).g.lun = (lunid))
#else /* CONFIG_NVM */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-07 23:48:41 +0000