+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2015 IT University of Copenhagen (rrpc.h)
* Copyright (C) 2016 CNEX Labs
#define PBLK_SECTOR (512)
#define PBLK_EXPOSED_PAGE_SIZE (4096)
-#define PBLK_MAX_REQ_ADDRS (64)
-#define PBLK_MAX_REQ_ADDRS_PW (6)
#define PBLK_NR_CLOSE_JOBS (4)
PBLK_BLK_ST_CLOSED = 0x2,
};
+enum {
+ PBLK_CHUNK_RESET_START,
+ PBLK_CHUNK_RESET_DONE,
+ PBLK_CHUNK_RESET_FAILED,
+};
+
struct pblk_sec_meta {
u64 reserved;
__le64 lba;
PBLK_RL_LOW = 4
};
-#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)
+#define pblk_dma_meta_size (sizeof(struct pblk_sec_meta) * NVM_MAX_VLBA)
+#define pblk_dma_ppa_size (sizeof(u64) * NVM_MAX_VLBA)
/* write buffer completion context */
struct pblk_c_ctx {
* will be 4KB
*/
+ unsigned int back_thres; /* Threshold that shall be maintained by
+ * the backpointer in order to respect
+ * geo->mw_cunits on a per chunk basis
+ */
+
struct list_head pages; /* List of data pages */
spinlock_t w_lock; /* Write lock */
struct pblk_gc_rq {
struct pblk_line *line;
void *data;
- u64 paddr_list[PBLK_MAX_REQ_ADDRS];
- u64 lba_list[PBLK_MAX_REQ_ADDRS];
+ u64 paddr_list[NVM_MAX_VLBA];
+ u64 lba_list[NVM_MAX_VLBA];
int nr_secs;
int secs_to_gc;
struct list_head list;
struct pblk_emeta *eline_meta[PBLK_DATA_LINES];
unsigned long meta_bitmap;
+ /* Cache and mempool for map/invalid bitmaps */
+ struct kmem_cache *bitmap_cache;
+ mempool_t *bitmap_pool;
+
/* Helpers for fast bitmap calculations */
unsigned long *bb_template;
unsigned long *bb_aux;
/*
* pblk ring buffer operations
*/
-int pblk_rb_init(struct pblk_rb *rb, struct pblk_rb_entry *rb_entry_base,
- unsigned int power_size, unsigned int power_seg_sz);
-unsigned int pblk_rb_calculate_size(unsigned int nr_entries);
-void *pblk_rb_entries_ref(struct pblk_rb *rb);
+int pblk_rb_init(struct pblk_rb *rb, unsigned int size, unsigned int threshold,
+ unsigned int seg_sz);
int pblk_rb_may_write_user(struct pblk_rb *rb, struct bio *bio,
unsigned int nr_entries, unsigned int *pos);
int pblk_rb_may_write_gc(struct pblk_rb *rb, unsigned int nr_entries,
unsigned int pblk_rb_sync_init(struct pblk_rb *rb, unsigned long *flags);
unsigned int pblk_rb_sync_advance(struct pblk_rb *rb, unsigned int nr_entries);
-struct pblk_rb_entry *pblk_rb_sync_scan_entry(struct pblk_rb *rb,
- struct ppa_addr *ppa);
+unsigned int pblk_rb_ptr_wrap(struct pblk_rb *rb, unsigned int p,
+ unsigned int nr_entries);
void pblk_rb_sync_end(struct pblk_rb *rb, unsigned long *flags);
unsigned int pblk_rb_flush_point_count(struct pblk_rb *rb);
int pblk_rb_tear_down_check(struct pblk_rb *rb);
int pblk_rb_pos_oob(struct pblk_rb *rb, u64 pos);
-void pblk_rb_data_free(struct pblk_rb *rb);
+void pblk_rb_free(struct pblk_rb *rb);
ssize_t pblk_rb_sysfs(struct pblk_rb *rb, char *buf);
/*
*/
struct nvm_rq *pblk_alloc_rqd(struct pblk *pblk, int type);
void pblk_free_rqd(struct pblk *pblk, struct nvm_rq *rqd, int type);
+int pblk_alloc_rqd_meta(struct pblk *pblk, struct nvm_rq *rqd);
+void pblk_free_rqd_meta(struct pblk *pblk, struct nvm_rq *rqd);
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_discard(struct pblk *pblk, struct bio *bio);
-struct nvm_chk_meta *pblk_chunk_get_info(struct pblk *pblk);
+struct nvm_chk_meta *pblk_get_chunk_meta(struct pblk *pblk);
struct nvm_chk_meta *pblk_chunk_get_off(struct pblk *pblk,
struct nvm_chk_meta *lp,
struct ppa_addr ppa);
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_io_sync_sem(struct pblk *pblk, struct nvm_rq *rqd);
int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line);
+void pblk_check_chunk_state_update(struct pblk *pblk, struct nvm_rq *rqd);
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);
struct pblk_line *pblk_line_replace_data(struct pblk *pblk);
+void pblk_ppa_to_line_put(struct pblk *pblk, struct ppa_addr ppa);
+void pblk_rq_to_line_put(struct pblk *pblk, struct nvm_rq *rqd);
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 (*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,
+int pblk_line_smeta_read(struct pblk *pblk, struct pblk_line *line);
+int pblk_line_emeta_read(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);
u64 __pblk_alloc_page(struct pblk *pblk, struct pblk_line *line, int nr_secs);
int pblk_calc_secs(struct pblk *pblk, unsigned long secs_avail,
unsigned long secs_to_flush);
-void pblk_up_page(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas);
-void pblk_down_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas,
+void pblk_down_rq(struct pblk *pblk, struct ppa_addr ppa,
unsigned long *lun_bitmap);
-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_down_chunk(struct pblk *pblk, struct ppa_addr ppa);
+void pblk_up_chunk(struct pblk *pblk, struct ppa_addr ppa);
+void pblk_up_rq(struct pblk *pblk, unsigned long *lun_bitmap);
int pblk_bio_add_pages(struct pblk *pblk, struct bio *bio, gfp_t flags,
int nr_pages);
void pblk_bio_free_pages(struct pblk *pblk, struct bio *bio, int off,
return le32_to_cpu(*line->vsc);
}
-static inline int pblk_pad_distance(struct pblk *pblk)
+static inline int pblk_ppa_to_line_id(struct ppa_addr p)
{
- struct nvm_tgt_dev *dev = pblk->dev;
- struct nvm_geo *geo = &dev->geo;
-
- return geo->mw_cunits * geo->all_luns * geo->ws_opt;
+ return p.a.blk;
}
-static inline int pblk_ppa_to_line(struct ppa_addr p)
+static inline struct pblk_line *pblk_ppa_to_line(struct pblk *pblk,
+ struct ppa_addr p)
{
- return p.a.blk;
+ return &pblk->lines[pblk_ppa_to_line_id(p)];
}
static inline int pblk_ppa_to_pos(struct nvm_geo *geo, struct ppa_addr p)
return ppa;
}
+static inline struct nvm_chk_meta *pblk_dev_ppa_to_chunk(struct pblk *pblk,
+ struct ppa_addr p)
+{
+ struct nvm_tgt_dev *dev = pblk->dev;
+ struct nvm_geo *geo = &dev->geo;
+ struct pblk_line *line = pblk_ppa_to_line(pblk, p);
+ int pos = pblk_ppa_to_pos(geo, p);
+
+ return &line->chks[pos];
+}
+
+static inline u64 pblk_dev_ppa_to_chunk_addr(struct pblk *pblk,
+ struct ppa_addr p)
+{
+ struct nvm_tgt_dev *dev = pblk->dev;
+
+ return dev_to_chunk_addr(dev->parent, &pblk->addrf, p);
+}
+
static inline u64 pblk_dev_ppa_to_line_addr(struct pblk *pblk,
struct ppa_addr p)
{
static inline struct ppa_addr pblk_ppa32_to_ppa64(struct pblk *pblk, 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_tgt_dev *dev = pblk->dev;
- struct nvm_geo *geo = &dev->geo;
-
- if (geo->version == NVM_OCSSD_SPEC_12) {
- struct nvm_addrf_12 *ppaf =
- (struct nvm_addrf_12 *)&pblk->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 = &pblk->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;
- }
- }
+ struct nvm_tgt_dev *dev = pblk->dev;
- return ppa64;
+ return nvm_ppa32_to_ppa64(dev->parent, &pblk->addrf, ppa32);
}
static inline u32 pblk_ppa64_to_ppa32(struct pblk *pblk, 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_tgt_dev *dev = pblk->dev;
- struct nvm_geo *geo = &dev->geo;
-
- if (geo->version == NVM_OCSSD_SPEC_12) {
- struct nvm_addrf_12 *ppaf =
- (struct nvm_addrf_12 *)&pblk->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 = &pblk->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;
- }
- }
+ struct nvm_tgt_dev *dev = pblk->dev;
- return ppa32;
+ return nvm_ppa64_to_ppa32(dev->parent, &pblk->addrf, ppa64);
}
static inline struct ppa_addr pblk_trans_map_get(struct pblk *pblk,
return crc;
}
-static inline int pblk_set_progr_mode(struct pblk *pblk, int type)
-{
- struct nvm_tgt_dev *dev = pblk->dev;
- struct nvm_geo *geo = &dev->geo;
- int flags;
-
- if (geo->version == NVM_OCSSD_SPEC_20)
- return 0;
-
- flags = geo->pln_mode >> 1;
-
- if (type == PBLK_WRITE)
- flags |= NVM_IO_SCRAMBLE_ENABLE;
-
- return flags;
-}
-
-enum {
- PBLK_READ_RANDOM = 0,
- PBLK_READ_SEQUENTIAL = 1,
-};
-
-static inline int pblk_set_read_mode(struct pblk *pblk, int type)
-{
- struct nvm_tgt_dev *dev = pblk->dev;
- struct nvm_geo *geo = &dev->geo;
- int flags;
-
- if (geo->version == NVM_OCSSD_SPEC_20)
- return 0;
-
- flags = NVM_IO_SUSPEND | NVM_IO_SCRAMBLE_ENABLE;
- if (type == PBLK_READ_SEQUENTIAL)
- flags |= geo->pln_mode >> 1;
-
- return flags;
-}
-
static inline int pblk_io_aligned(struct pblk *pblk, int nr_secs)
{
return !(nr_secs % pblk->min_write_pgs);
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;
+ struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
if (pblk_boundary_ppa_checks(dev, ppa_list, rqd->nr_ppas)) {
WARN_ON(1);
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)];
+ line = pblk_ppa_to_line(pblk, ppa_list[i]);
spin_lock(&line->lock);
if (line->state != PBLK_LINESTATE_OPEN) {
uuid_le_gen(&uuid);
memcpy(pblk->instance_uuid, uuid.b, 16);
}
+
+static inline char *pblk_disk_name(struct pblk *pblk)
+{
+ struct gendisk *disk = pblk->disk;
+
+ return disk->disk_name;
+}
#endif /* PBLK_H_ */
projects / linux.git / blobdiff