#define PBLK_MAX_REQ_ADDRS (64)
#define PBLK_MAX_REQ_ADDRS_PW (6)
-#define PBLK_WS_POOL_SIZE (128)
-#define PBLK_META_POOL_SIZE (128)
-#define PBLK_READ_REQ_POOL_SIZE (1024)
-
#define PBLK_NR_CLOSE_JOBS (4)
#define PBLK_CACHE_NAME_LEN (DISK_NAME_LEN + 16)
#define NR_PHY_IN_LOG (PBLK_EXPOSED_PAGE_SIZE / PBLK_SECTOR)
-#define pblk_for_each_lun(pblk, rlun, i) \
- for ((i) = 0, rlun = &(pblk)->luns[0]; \
- (i) < (pblk)->nr_luns; (i)++, rlun = &(pblk)->luns[(i)])
+/* Static pool sizes */
+#define PBLK_GEN_WS_POOL_SIZE (2)
-#define ERASE 2 /* READ = 0, WRITE = 1 */
+enum {
+ PBLK_READ = READ,
+ PBLK_WRITE = WRITE,/* Write from write buffer */
+ PBLK_WRITE_INT, /* Internal write - no write buffer */
+ PBLK_ERASE,
+};
enum {
/* IO Types */
};
#define pblk_dma_meta_size (sizeof(struct pblk_sec_meta) * PBLK_MAX_REQ_ADDRS)
+#define pblk_dma_ppa_size (sizeof(u64) * PBLK_MAX_REQ_ADDRS)
/* write buffer completion context */
struct pblk_c_ctx {
unsigned int nr_padded;
};
-/* generic context */
+/* read context */
struct pblk_g_ctx {
void *private;
+ u64 lba;
};
/* Pad context */
* the last submitted entry that has
* been successfully persisted to media
*/
- unsigned int sync_point; /* Sync point - last entry that must be
+ unsigned int flush_point; /* Sync point - last entry that must be
* flushed to the media. Used with
* REQ_FLUSH and REQ_FUA
*/
spinlock_t s_lock; /* Sync lock */
#ifdef CONFIG_NVM_DEBUG
- atomic_t inflight_sync_point; /* Not served REQ_FLUSH | REQ_FUA */
+ atomic_t inflight_flush_point; /* Not served REQ_FLUSH | REQ_FUA */
#endif
};
struct pblk_gc_rq {
struct pblk_line *line;
void *data;
+ u64 paddr_list[PBLK_MAX_REQ_ADDRS];
u64 lba_list[PBLK_MAX_REQ_ADDRS];
int nr_secs;
int secs_to_gc;
struct timer_list gc_timer;
struct semaphore gc_sem;
- atomic_t inflight_gc;
+ atomic_t read_inflight_gc; /* Number of lines with inflight GC reads */
+ atomic_t pipeline_gc; /* Number of lines in the GC pipeline -
+ * started reads to finished writes
+ */
int w_entries;
struct list_head w_list;
int rb_gc_max; /* Max buffer entries available for GC I/O */
int rb_gc_rsv; /* Reserved buffer entries for GC I/O */
int rb_state; /* Rate-limiter current state */
+ int rb_max_io; /* Maximum size for an I/O giving the config */
atomic_t rb_user_cnt; /* User I/O buffer counter */
atomic_t rb_gc_cnt; /* GC I/O buffer counter */
};
#define PBLK_MAGIC 0x70626c6b /*pblk*/
+#define SMETA_VERSION cpu_to_le16(1)
struct line_header {
__le32 crc;
struct list_head compl_list;
- mempool_t *page_pool;
- mempool_t *line_ws_pool;
+ mempool_t *page_bio_pool;
+ mempool_t *gen_ws_pool;
mempool_t *rec_pool;
- mempool_t *g_rq_pool;
+ mempool_t *r_rq_pool;
mempool_t *w_rq_pool;
- mempool_t *line_meta_pool;
+ mempool_t *e_rq_pool;
struct workqueue_struct *close_wq;
struct workqueue_struct *bb_wq;
+ struct workqueue_struct *r_end_wq;
struct timer_list wtimer;
void pblk_rb_write_entry_user(struct pblk_rb *rb, void *data,
struct pblk_w_ctx w_ctx, unsigned int pos);
void pblk_rb_write_entry_gc(struct pblk_rb *rb, void *data,
- struct pblk_w_ctx w_ctx, struct pblk_line *gc_line,
- unsigned int pos);
+ struct pblk_w_ctx w_ctx, struct pblk_line *line,
+ u64 paddr, unsigned int pos);
struct pblk_w_ctx *pblk_rb_w_ctx(struct pblk_rb *rb, unsigned int pos);
void pblk_rb_flush(struct pblk_rb *rb);
void pblk_rb_sync_l2p(struct pblk_rb *rb);
unsigned int pblk_rb_read_to_bio(struct pblk_rb *rb, struct nvm_rq *rqd,
- struct bio *bio, unsigned int pos,
- unsigned int nr_entries, unsigned int count);
+ unsigned int pos, unsigned int nr_entries,
+ unsigned int count);
unsigned int pblk_rb_read_to_bio_list(struct pblk_rb *rb, struct bio *bio,
struct list_head *list,
unsigned int max);
struct pblk_rb_entry *pblk_rb_sync_scan_entry(struct pblk_rb *rb,
struct ppa_addr *ppa);
void pblk_rb_sync_end(struct pblk_rb *rb, unsigned long *flags);
-unsigned int pblk_rb_sync_point_count(struct pblk_rb *rb);
+unsigned int pblk_rb_flush_point_count(struct pblk_rb *rb);
unsigned int pblk_rb_read_count(struct pblk_rb *rb);
unsigned int pblk_rb_sync_count(struct pblk_rb *rb);
/*
* pblk core
*/
-struct nvm_rq *pblk_alloc_rqd(struct pblk *pblk, int rw);
+struct nvm_rq *pblk_alloc_rqd(struct pblk *pblk, int type);
+void pblk_free_rqd(struct pblk *pblk, struct nvm_rq *rqd, int type);
void pblk_set_sec_per_write(struct pblk *pblk, int sec_per_write);
int pblk_setup_w_rec_rq(struct pblk *pblk, struct nvm_rq *rqd,
struct pblk_c_ctx *c_ctx);
-void pblk_free_rqd(struct pblk *pblk, struct nvm_rq *rqd, int rw);
-void pblk_wait_for_meta(struct pblk *pblk);
-struct ppa_addr pblk_get_lba_map(struct pblk *pblk, sector_t lba);
void pblk_discard(struct pblk *pblk, struct bio *bio);
void pblk_log_write_err(struct pblk *pblk, struct nvm_rq *rqd);
void pblk_log_read_err(struct pblk *pblk, struct nvm_rq *rqd);
int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd);
+int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd);
int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line);
struct bio *pblk_bio_map_addr(struct pblk *pblk, void *data,
unsigned int nr_secs, unsigned int len,
int alloc_type, gfp_t gfp_mask);
struct pblk_line *pblk_line_get(struct pblk *pblk);
struct pblk_line *pblk_line_get_first_data(struct pblk *pblk);
-void pblk_line_replace_data(struct pblk *pblk);
+struct pblk_line *pblk_line_replace_data(struct pblk *pblk);
int pblk_line_recov_alloc(struct pblk *pblk, struct pblk_line *line);
void pblk_line_recov_close(struct pblk *pblk, struct pblk_line *line);
struct pblk_line *pblk_line_get_data(struct pblk *pblk);
void pblk_line_free(struct pblk *pblk, struct pblk_line *line);
void pblk_line_close_meta(struct pblk *pblk, struct pblk_line *line);
void pblk_line_close(struct pblk *pblk, struct pblk_line *line);
-void pblk_line_close_meta_sync(struct pblk *pblk);
void pblk_line_close_ws(struct work_struct *work);
void pblk_pipeline_stop(struct pblk *pblk);
-void pblk_line_mark_bb(struct work_struct *work);
-void pblk_line_run_ws(struct pblk *pblk, struct pblk_line *line, void *priv,
- void (*work)(struct work_struct *),
- struct workqueue_struct *wq);
+void pblk_gen_run_ws(struct pblk *pblk, struct pblk_line *line, void *priv,
+ void (*work)(struct work_struct *), gfp_t gfp_mask,
+ struct workqueue_struct *wq);
u64 pblk_line_smeta_start(struct pblk *pblk, struct pblk_line *line);
int pblk_line_read_smeta(struct pblk *pblk, struct pblk_line *line);
int pblk_line_read_emeta(struct pblk *pblk, struct pblk_line *line,
void *emeta_buf);
int pblk_blk_erase_async(struct pblk *pblk, struct ppa_addr erase_ppa);
void pblk_line_put(struct kref *ref);
+void pblk_line_put_wq(struct kref *ref);
struct list_head *pblk_line_gc_list(struct pblk *pblk, struct pblk_line *line);
u64 pblk_lookup_page(struct pblk *pblk, struct pblk_line *line);
void pblk_dealloc_page(struct pblk *pblk, struct pblk_line *line, int nr_secs);
void pblk_down_page(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas);
void pblk_up_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas,
unsigned long *lun_bitmap);
-void pblk_end_bio_sync(struct bio *bio);
void pblk_end_io_sync(struct nvm_rq *rqd);
int pblk_bio_add_pages(struct pblk *pblk, struct bio *bio, gfp_t flags,
int nr_pages);
void pblk_update_map_dev(struct pblk *pblk, sector_t lba,
struct ppa_addr ppa, struct ppa_addr entry_line);
int pblk_update_map_gc(struct pblk *pblk, sector_t lba, struct ppa_addr ppa,
- struct pblk_line *gc_line);
+ struct pblk_line *gc_line, u64 paddr);
void pblk_lookup_l2p_rand(struct pblk *pblk, struct ppa_addr *ppas,
u64 *lba_list, int nr_secs);
void pblk_lookup_l2p_seq(struct pblk *pblk, struct ppa_addr *ppas,
*/
int pblk_write_to_cache(struct pblk *pblk, struct bio *bio,
unsigned long flags);
-int pblk_write_gc_to_cache(struct pblk *pblk, void *data, u64 *lba_list,
- unsigned int nr_entries, unsigned int nr_rec_entries,
- struct pblk_line *gc_line, unsigned long flags);
+int pblk_write_gc_to_cache(struct pblk *pblk, struct pblk_gc_rq *gc_rq);
/*
* pblk map
* pblk write thread
*/
int pblk_write_ts(void *data);
-void pblk_write_timer_fn(unsigned long data);
+void pblk_write_timer_fn(struct timer_list *t);
void pblk_write_should_kick(struct pblk *pblk);
/*
*/
extern struct bio_set *pblk_bio_set;
int pblk_submit_read(struct pblk *pblk, struct bio *bio);
-int pblk_submit_read_gc(struct pblk *pblk, u64 *lba_list, void *data,
- unsigned int nr_secs, unsigned int *secs_to_gc,
- struct pblk_line *line);
+int pblk_submit_read_gc(struct pblk *pblk, struct pblk_gc_rq *gc_rq);
/*
* pblk recovery
*/
void pblk_submit_rec(struct work_struct *work);
struct pblk_line *pblk_recov_l2p(struct pblk *pblk);
int pblk_recov_pad(struct pblk *pblk);
-__le64 *pblk_recov_get_lba_list(struct pblk *pblk, struct line_emeta *emeta);
+int pblk_recov_check_emeta(struct pblk *pblk, struct line_emeta *emeta);
int pblk_recov_setup_rq(struct pblk *pblk, struct pblk_c_ctx *c_ctx,
struct pblk_rec_ctx *recovery, u64 *comp_bits,
unsigned int comp);
* pblk gc
*/
#define PBLK_GC_MAX_READERS 8 /* Max number of outstanding GC reader jobs */
-#define PBLK_GC_W_QD 128 /* Queue depth for inflight GC write I/Os */
+#define PBLK_GC_RQ_QD 128 /* Queue depth for inflight GC requests */
#define PBLK_GC_L_QD 4 /* Queue depth for inflight GC lines */
#define PBLK_GC_RSV_LINE 1 /* Reserved lines for GC */
void pblk_gc_should_start(struct pblk *pblk);
void pblk_gc_should_stop(struct pblk *pblk);
void pblk_gc_should_kick(struct pblk *pblk);
-void pblk_gc_kick(struct pblk *pblk);
+void pblk_gc_free_full_lines(struct pblk *pblk);
void pblk_gc_sysfs_state_show(struct pblk *pblk, int *gc_enabled,
int *gc_active);
int pblk_gc_sysfs_force(struct pblk *pblk, int force);
*/
void pblk_rl_init(struct pblk_rl *rl, int budget);
void pblk_rl_free(struct pblk_rl *rl);
+void pblk_rl_update_rates(struct pblk_rl *rl);
int pblk_rl_high_thrs(struct pblk_rl *rl);
-int pblk_rl_low_thrs(struct pblk_rl *rl);
unsigned long pblk_rl_nr_free_blks(struct pblk_rl *rl);
int pblk_rl_user_may_insert(struct pblk_rl *rl, int nr_entries);
void pblk_rl_inserted(struct pblk_rl *rl, int nr_entries);
int pblk_rl_gc_may_insert(struct pblk_rl *rl, int nr_entries);
void pblk_rl_gc_in(struct pblk_rl *rl, int nr_entries);
void pblk_rl_out(struct pblk_rl *rl, int nr_user, int nr_gc);
-int pblk_rl_sysfs_rate_show(struct pblk_rl *rl);
+int pblk_rl_max_io(struct pblk_rl *rl);
void pblk_rl_free_lines_inc(struct pblk_rl *rl, struct pblk_line *line);
void pblk_rl_free_lines_dec(struct pblk_rl *rl, struct pblk_line *line);
-void pblk_rl_set_space_limit(struct pblk_rl *rl, int entries_left);
int pblk_rl_is_limit(struct pblk_rl *rl);
/*
static inline int pblk_line_vsc(struct pblk_line *line)
{
- int vsc;
-
- spin_lock(&line->lock);
- vsc = le32_to_cpu(*line->vsc);
- spin_unlock(&line->lock);
-
- return vsc;
+ return le32_to_cpu(*line->vsc);
}
#define NVM_MEM_PAGE_WRITE (8)
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
- return NVM_MEM_PAGE_WRITE * geo->nr_luns * geo->sec_per_pl;
+ return NVM_MEM_PAGE_WRITE * geo->all_luns * geo->sec_per_pl;
}
-static inline int pblk_dev_ppa_to_line(struct ppa_addr p)
+static inline int pblk_ppa_to_line(struct ppa_addr p)
{
return p.g.blk;
}
-static inline int pblk_tgt_ppa_to_line(struct ppa_addr p)
+static inline int pblk_ppa_to_pos(struct nvm_geo *geo, struct ppa_addr p)
{
- return p.g.blk;
+ return p.g.lun * geo->nr_chnls + p.g.ch;
}
-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)
{
- return p.g.lun * geo->nr_chnls + p.g.ch;
+ 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;
+
+ return ppa;
}
-/* A block within a line corresponds to the lun */
-static inline int pblk_dev_ppa_to_pos(struct nvm_geo *geo, struct ppa_addr p)
+static inline u64 pblk_dev_ppa_to_line_addr(struct pblk *pblk,
+ struct ppa_addr p)
{
- return p.g.lun * geo->nr_chnls + p.g.ch;
+ 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;
+
+ return paddr;
}
static inline struct ppa_addr pblk_ppa32_to_ppa64(struct pblk *pblk, u32 ppa32)
return ppa64;
}
-static inline struct ppa_addr pblk_trans_map_get(struct pblk *pblk,
- sector_t lba)
-{
- struct ppa_addr ppa;
-
- if (pblk->ppaf_bitsize < 32) {
- u32 *map = (u32 *)pblk->trans_map;
-
- ppa = pblk_ppa32_to_ppa64(pblk, map[lba]);
- } else {
- struct ppa_addr *map = (struct ppa_addr *)pblk->trans_map;
-
- ppa = map[lba];
- }
-
- return ppa;
-}
-
static inline u32 pblk_ppa64_to_ppa32(struct pblk *pblk, struct ppa_addr ppa64)
{
u32 ppa32 = 0;
return ppa32;
}
-static inline void pblk_trans_map_set(struct pblk *pblk, sector_t lba,
- struct ppa_addr ppa)
+static inline struct ppa_addr pblk_trans_map_get(struct pblk *pblk,
+ sector_t lba)
{
+ struct ppa_addr ppa;
+
if (pblk->ppaf_bitsize < 32) {
u32 *map = (u32 *)pblk->trans_map;
- map[lba] = pblk_ppa64_to_ppa32(pblk, ppa);
+ ppa = pblk_ppa32_to_ppa64(pblk, map[lba]);
} else {
- u64 *map = (u64 *)pblk->trans_map;
+ struct ppa_addr *map = (struct ppa_addr *)pblk->trans_map;
- map[lba] = ppa.ppa;
+ ppa = map[lba];
}
+
+ return ppa;
}
-static inline u64 pblk_dev_ppa_to_line_addr(struct pblk *pblk,
- struct ppa_addr p)
+static inline void pblk_trans_map_set(struct pblk *pblk, sector_t lba,
+ struct ppa_addr ppa)
{
- u64 paddr;
+ if (pblk->ppaf_bitsize < 32) {
+ u32 *map = (u32 *)pblk->trans_map;
- paddr = 0;
- 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;
+ map[lba] = pblk_ppa64_to_ppa32(pblk, ppa);
+ } else {
+ u64 *map = (u64 *)pblk->trans_map;
- return paddr;
+ map[lba] = ppa.ppa;
+ }
}
static inline int pblk_ppa_empty(struct ppa_addr ppa_addr)
return p;
}
-static inline struct ppa_addr addr_to_gen_ppa(struct pblk *pblk, u64 paddr,
- u64 line_id)
-{
- 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;
-
- return ppa;
-}
-
-static inline struct ppa_addr addr_to_pblk_ppa(struct pblk *pblk, u64 paddr,
- u64 line_id)
-{
- struct ppa_addr ppa;
-
- ppa = addr_to_gen_ppa(pblk, paddr, line_id);
-
- return ppa;
-}
-
static inline u32 pblk_calc_meta_header_crc(struct pblk *pblk,
struct line_header *header)
{
flags = geo->plane_mode >> 1;
- if (type == WRITE)
+ if (type == PBLK_WRITE)
flags |= NVM_IO_SCRAMBLE_ENABLE;
return flags;
pr_err("error:%d, ppa_status:%llx\n", error, rqd->ppa_status);
}
-#endif
static inline int pblk_boundary_ppa_checks(struct nvm_tgt_dev *tgt_dev,
struct ppa_addr *ppas, int nr_ppas)
if (!ppa->c.is_cached &&
ppa->g.ch < geo->nr_chnls &&
- ppa->g.lun < geo->luns_per_chnl &&
+ ppa->g.lun < geo->nr_luns &&
ppa->g.pl < geo->nr_planes &&
- ppa->g.blk < geo->blks_per_lun &&
- ppa->g.pg < geo->pgs_per_blk &&
+ ppa->g.blk < geo->nr_chks &&
+ ppa->g.pg < geo->ws_per_chk &&
ppa->g.sec < geo->sec_per_pg)
continue;
-#ifdef CONFIG_NVM_DEBUG
print_ppa(ppa, "boundary", i);
-#endif
+
return 1;
}
return 0;
}
+static inline int pblk_check_io(struct pblk *pblk, struct nvm_rq *rqd)
+{
+ struct nvm_tgt_dev *dev = pblk->dev;
+ struct ppa_addr *ppa_list;
+
+ ppa_list = (rqd->nr_ppas > 1) ? rqd->ppa_list : &rqd->ppa_addr;
+
+ if (pblk_boundary_ppa_checks(dev, ppa_list, rqd->nr_ppas)) {
+ WARN_ON(1);
+ return -EINVAL;
+ }
+
+ if (rqd->opcode == NVM_OP_PWRITE) {
+ struct pblk_line *line;
+ struct ppa_addr ppa;
+ int i;
+
+ for (i = 0; i < rqd->nr_ppas; i++) {
+ ppa = ppa_list[i];
+ line = &pblk->lines[pblk_ppa_to_line(ppa)];
+
+ spin_lock(&line->lock);
+ if (line->state != PBLK_LINESTATE_OPEN) {
+ pr_err("pblk: bad ppa: line:%d,state:%d\n",
+ line->id, line->state);
+ WARN_ON(1);
+ spin_unlock(&line->lock);
+ return -EINVAL;
+ }
+ spin_unlock(&line->lock);
+ }
+ }
+
+ return 0;
+}
+#endif
+
static inline int pblk_boundary_paddr_checks(struct pblk *pblk, u64 paddr)
{
struct pblk_line_meta *lm = &pblk->lm;
return bio->bi_iter.bi_size / PBLK_EXPOSED_PAGE_SIZE;
}
-static inline sector_t pblk_get_sector(sector_t lba)
-{
- return lba * NR_PHY_IN_LOG;
-}
-
static inline void pblk_setup_uuid(struct pblk *pblk)
{
uuid_le uuid;
git.samba.org / sfrench / cifs-2.6.git / blobdiff