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Diffstat (limited to 'include/linux/lightnvm.h')
-rw-r--r--include/linux/lightnvm.h176
1 files changed, 44 insertions, 132 deletions
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index 69c9057e1ab8..c6916aec43b6 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -58,7 +58,6 @@ enum {
struct nvm_id_group {
u8 mtype;
u8 fmtype;
- u16 res16;
u8 num_ch;
u8 num_lun;
u8 num_pln;
@@ -74,9 +73,9 @@ struct nvm_id_group {
u32 tbet;
u32 tbem;
u32 mpos;
+ u32 mccap;
u16 cpar;
- u8 res[913];
-} __packed;
+};
struct nvm_addr_format {
u8 ch_offset;
@@ -91,19 +90,15 @@ struct nvm_addr_format {
u8 pg_len;
u8 sect_offset;
u8 sect_len;
- u8 res[4];
};
struct nvm_id {
u8 ver_id;
u8 vmnt;
u8 cgrps;
- u8 res[5];
u32 cap;
u32 dom;
struct nvm_addr_format ppaf;
- u8 ppat;
- u8 resv[224];
struct nvm_id_group groups[4];
} __packed;
@@ -123,39 +118,28 @@ struct nvm_tgt_instance {
#define NVM_VERSION_MINOR 0
#define NVM_VERSION_PATCH 0
-#define NVM_SEC_BITS (8)
-#define NVM_PL_BITS (6)
-#define NVM_PG_BITS (16)
#define NVM_BLK_BITS (16)
-#define NVM_LUN_BITS (10)
+#define NVM_PG_BITS (16)
+#define NVM_SEC_BITS (8)
+#define NVM_PL_BITS (8)
+#define NVM_LUN_BITS (8)
#define NVM_CH_BITS (8)
struct ppa_addr {
+ /* Generic structure for all addresses */
union {
- /* Channel-based PPA format in nand 4x2x2x2x8x10 */
- struct {
- u64 ch : 4;
- u64 sec : 2; /* 4 sectors per page */
- u64 pl : 2; /* 4 planes per LUN */
- u64 lun : 2; /* 4 LUNs per channel */
- u64 pg : 8; /* 256 pages per block */
- u64 blk : 10;/* 1024 blocks per plane */
- u64 resved : 36;
- } chnl;
-
- /* Generic structure for all addresses */
struct {
+ u64 blk : NVM_BLK_BITS;
+ u64 pg : NVM_PG_BITS;
u64 sec : NVM_SEC_BITS;
u64 pl : NVM_PL_BITS;
- u64 pg : NVM_PG_BITS;
- u64 blk : NVM_BLK_BITS;
u64 lun : NVM_LUN_BITS;
u64 ch : NVM_CH_BITS;
} g;
u64 ppa;
};
-} __packed;
+};
struct nvm_rq {
struct nvm_tgt_instance *ins;
@@ -191,11 +175,11 @@ static inline void *nvm_rq_to_pdu(struct nvm_rq *rqdata)
struct nvm_block;
typedef int (nvm_l2p_update_fn)(u64, u32, __le64 *, void *);
-typedef int (nvm_bb_update_fn)(u32, void *, unsigned int, void *);
+typedef int (nvm_bb_update_fn)(struct ppa_addr, int, u8 *, void *);
typedef int (nvm_id_fn)(struct request_queue *, struct nvm_id *);
typedef int (nvm_get_l2p_tbl_fn)(struct request_queue *, u64, u32,
nvm_l2p_update_fn *, void *);
-typedef int (nvm_op_bb_tbl_fn)(struct request_queue *, int, unsigned int,
+typedef int (nvm_op_bb_tbl_fn)(struct nvm_dev *, struct ppa_addr, int,
nvm_bb_update_fn *, void *);
typedef int (nvm_op_set_bb_fn)(struct request_queue *, struct nvm_rq *, int);
typedef int (nvm_submit_io_fn)(struct request_queue *, struct nvm_rq *);
@@ -210,7 +194,7 @@ struct nvm_dev_ops {
nvm_id_fn *identity;
nvm_get_l2p_tbl_fn *get_l2p_tbl;
nvm_op_bb_tbl_fn *get_bb_tbl;
- nvm_op_set_bb_fn *set_bb;
+ nvm_op_set_bb_fn *set_bb_tbl;
nvm_submit_io_fn *submit_io;
nvm_erase_blk_fn *erase_block;
@@ -220,7 +204,7 @@ struct nvm_dev_ops {
nvm_dev_dma_alloc_fn *dev_dma_alloc;
nvm_dev_dma_free_fn *dev_dma_free;
- uint8_t max_phys_sect;
+ unsigned int max_phys_sect;
};
struct nvm_lun {
@@ -229,7 +213,9 @@ struct nvm_lun {
int lun_id;
int chnl_id;
+ unsigned int nr_inuse_blocks; /* Number of used blocks */
unsigned int nr_free_blocks; /* Number of unused blocks */
+ unsigned int nr_bad_blocks; /* Number of bad blocks */
struct nvm_block *blocks;
spinlock_t lock;
@@ -263,8 +249,7 @@ struct nvm_dev {
int blks_per_lun;
int sec_size;
int oob_size;
- int addr_mode;
- struct nvm_addr_format addr_format;
+ struct nvm_addr_format ppaf;
/* Calculated/Cached values. These do not reflect the actual usable
* blocks at run-time.
@@ -290,118 +275,45 @@ struct nvm_dev {
char name[DISK_NAME_LEN];
};
-/* fallback conversion */
-static struct ppa_addr __generic_to_linear_addr(struct nvm_dev *dev,
- struct ppa_addr r)
-{
- struct ppa_addr l;
-
- l.ppa = r.g.sec +
- r.g.pg * dev->sec_per_pg +
- r.g.blk * (dev->pgs_per_blk *
- dev->sec_per_pg) +
- r.g.lun * (dev->blks_per_lun *
- dev->pgs_per_blk *
- dev->sec_per_pg) +
- r.g.ch * (dev->blks_per_lun *
- dev->pgs_per_blk *
- dev->luns_per_chnl *
- dev->sec_per_pg);
-
- return l;
-}
-
-/* fallback conversion */
-static struct ppa_addr __linear_to_generic_addr(struct nvm_dev *dev,
- struct ppa_addr r)
+static inline struct ppa_addr generic_to_dev_addr(struct nvm_dev *dev,
+ struct ppa_addr r)
{
struct ppa_addr l;
- int secs, pgs, blks, luns;
- sector_t ppa = r.ppa;
- l.ppa = 0;
-
- div_u64_rem(ppa, dev->sec_per_pg, &secs);
- l.g.sec = secs;
-
- sector_div(ppa, dev->sec_per_pg);
- div_u64_rem(ppa, dev->sec_per_blk, &pgs);
- l.g.pg = pgs;
-
- sector_div(ppa, dev->pgs_per_blk);
- div_u64_rem(ppa, dev->blks_per_lun, &blks);
- l.g.blk = blks;
-
- sector_div(ppa, dev->blks_per_lun);
- div_u64_rem(ppa, dev->luns_per_chnl, &luns);
- l.g.lun = luns;
-
- sector_div(ppa, dev->luns_per_chnl);
- l.g.ch = ppa;
+ 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;
return l;
}
-static struct ppa_addr __generic_to_chnl_addr(struct ppa_addr r)
+static inline struct ppa_addr dev_to_generic_addr(struct nvm_dev *dev,
+ struct ppa_addr r)
{
struct ppa_addr l;
- l.ppa = 0;
-
- l.chnl.sec = r.g.sec;
- l.chnl.pl = r.g.pl;
- l.chnl.pg = r.g.pg;
- l.chnl.blk = r.g.blk;
- l.chnl.lun = r.g.lun;
- l.chnl.ch = r.g.ch;
-
- return l;
-}
-
-static struct ppa_addr __chnl_to_generic_addr(struct ppa_addr r)
-{
- struct ppa_addr l;
-
- l.ppa = 0;
-
- l.g.sec = r.chnl.sec;
- l.g.pl = r.chnl.pl;
- l.g.pg = r.chnl.pg;
- l.g.blk = r.chnl.blk;
- l.g.lun = r.chnl.lun;
- l.g.ch = r.chnl.ch;
+ /*
+ * (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));
return l;
}
-static inline struct ppa_addr addr_to_generic_mode(struct nvm_dev *dev,
- struct ppa_addr gppa)
-{
- switch (dev->addr_mode) {
- case NVM_ADDRMODE_LINEAR:
- return __linear_to_generic_addr(dev, gppa);
- case NVM_ADDRMODE_CHANNEL:
- return __chnl_to_generic_addr(gppa);
- default:
- BUG();
- }
- return gppa;
-}
-
-static inline struct ppa_addr generic_to_addr_mode(struct nvm_dev *dev,
- struct ppa_addr gppa)
-{
- switch (dev->addr_mode) {
- case NVM_ADDRMODE_LINEAR:
- return __generic_to_linear_addr(dev, gppa);
- case NVM_ADDRMODE_CHANNEL:
- return __generic_to_chnl_addr(gppa);
- default:
- BUG();
- }
- return gppa;
-}
-
static inline int ppa_empty(struct ppa_addr ppa_addr)
{
return (ppa_addr.ppa == ADDR_EMPTY);
@@ -468,7 +380,7 @@ typedef int (nvmm_end_io_fn)(struct nvm_rq *, int);
typedef int (nvmm_erase_blk_fn)(struct nvm_dev *, struct nvm_block *,
unsigned long);
typedef struct nvm_lun *(nvmm_get_lun_fn)(struct nvm_dev *, int);
-typedef void (nvmm_free_blocks_print_fn)(struct nvm_dev *);
+typedef void (nvmm_lun_info_print_fn)(struct nvm_dev *);
struct nvmm_type {
const char *name;
@@ -492,7 +404,7 @@ struct nvmm_type {
nvmm_get_lun_fn *get_lun;
/* Statistics */
- nvmm_free_blocks_print_fn *free_blocks_print;
+ nvmm_lun_info_print_fn *lun_info_print;
struct list_head list;
};
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-24 20:13:36 +0300