4 #include <linux/types.h>
16 #define NVM_BLK_BITS (16)
17 #define NVM_PG_BITS (16)
18 #define NVM_SEC_BITS (8)
19 #define NVM_PL_BITS (8)
20 #define NVM_LUN_BITS (8)
21 #define NVM_CH_BITS (8)
24 /* Generic structure for all addresses */
27 u64 blk : NVM_BLK_BITS;
29 u64 sec : NVM_SEC_BITS;
31 u64 lun : NVM_LUN_BITS;
43 typedef int (nvm_l2p_update_fn)(u64, u32, __le64 *, void *);
44 typedef int (nvm_bb_update_fn)(struct nvm_dev *, struct ppa_addr, u8 *, int,
46 typedef int (nvm_id_fn)(struct nvm_dev *, struct nvm_id *);
47 typedef int (nvm_get_l2p_tbl_fn)(struct nvm_dev *, u64, u32,
48 nvm_l2p_update_fn *, void *);
49 typedef int (nvm_op_bb_tbl_fn)(struct nvm_dev *, struct ppa_addr,
50 nvm_bb_update_fn *, void *);
51 typedef int (nvm_op_set_bb_fn)(struct nvm_dev *, struct nvm_rq *, int);
52 typedef int (nvm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *);
53 typedef int (nvm_erase_blk_fn)(struct nvm_dev *, struct nvm_rq *);
54 typedef void *(nvm_create_dma_pool_fn)(struct nvm_dev *, char *);
55 typedef void (nvm_destroy_dma_pool_fn)(void *);
56 typedef void *(nvm_dev_dma_alloc_fn)(struct nvm_dev *, void *, gfp_t,
58 typedef void (nvm_dev_dma_free_fn)(void *, void*, dma_addr_t);
62 nvm_get_l2p_tbl_fn *get_l2p_tbl;
63 nvm_op_bb_tbl_fn *get_bb_tbl;
64 nvm_op_set_bb_fn *set_bb_tbl;
66 nvm_submit_io_fn *submit_io;
67 nvm_erase_blk_fn *erase_block;
69 nvm_create_dma_pool_fn *create_dma_pool;
70 nvm_destroy_dma_pool_fn *destroy_dma_pool;
71 nvm_dev_dma_alloc_fn *dev_dma_alloc;
72 nvm_dev_dma_free_fn *dev_dma_free;
74 unsigned int max_phys_sect;
81 #include <linux/blkdev.h>
82 #include <linux/file.h>
83 #include <linux/dmapool.h>
84 #include <uapi/linux/lightnvm.h>
87 /* HW Responsibilities */
91 /* Physical Adressing Mode */
92 NVM_ADDRMODE_LINEAR = 0,
93 NVM_ADDRMODE_CHANNEL = 1,
95 /* Plane programming mode for LUN */
101 NVM_RSP_SUCCESS = 0x0,
102 NVM_RSP_NOT_CHANGEABLE = 0x1,
103 NVM_RSP_ERR_FAILWRITE = 0x40ff,
104 NVM_RSP_ERR_EMPTYPAGE = 0x42ff,
107 NVM_OP_HBREAD = 0x02,
108 NVM_OP_HBWRITE = 0x81,
109 NVM_OP_PWRITE = 0x91,
113 /* PPA Command Flags */
114 NVM_IO_SNGL_ACCESS = 0x0,
115 NVM_IO_DUAL_ACCESS = 0x1,
116 NVM_IO_QUAD_ACCESS = 0x2,
118 /* NAND Access Modes */
119 NVM_IO_SUSPEND = 0x80,
120 NVM_IO_SLC_MODE = 0x100,
121 NVM_IO_SCRAMBLE_DISABLE = 0x200,
124 NVM_BLK_T_FREE = 0x0,
126 NVM_BLK_T_GRWN_BAD = 0x2,
128 NVM_BLK_T_HOST = 0x8,
130 /* Memory capabilities */
131 NVM_ID_CAP_SLC = 0x1,
132 NVM_ID_CAP_CMD_SUSPEND = 0x2,
133 NVM_ID_CAP_SCRAMBLE = 0x4,
134 NVM_ID_CAP_ENCRYPT = 0x8,
137 NVM_ID_FMTYPE_SLC = 0,
138 NVM_ID_FMTYPE_MLC = 1,
140 /* Device capabilities */
141 NVM_ID_DCAP_BBLKMGMT = 0x1,
142 NVM_UD_DCAP_ECC = 0x2,
145 struct nvm_id_lp_mlc {
150 struct nvm_id_lp_tbl {
152 struct nvm_id_lp_mlc mlc;
155 struct nvm_id_group {
176 struct nvm_id_lp_tbl lptbl;
179 struct nvm_addr_format {
200 struct nvm_addr_format ppaf;
201 struct nvm_id_group groups[4];
205 struct list_head list;
206 struct nvm_tgt_type *type;
207 struct gendisk *disk;
210 struct nvm_tgt_instance {
211 struct nvm_tgt_type *tt;
214 #define ADDR_EMPTY (~0ULL)
216 #define NVM_VERSION_MAJOR 1
217 #define NVM_VERSION_MINOR 0
218 #define NVM_VERSION_PATCH 0
221 typedef void (nvm_end_io_fn)(struct nvm_rq *);
224 struct nvm_tgt_instance *ins;
230 struct ppa_addr ppa_addr;
231 dma_addr_t dma_ppa_list;
234 struct ppa_addr *ppa_list;
237 dma_addr_t dma_metadata;
239 struct completion *wait;
240 nvm_end_io_fn *end_io;
246 u64 ppa_status; /* ppa media status */
250 static inline struct nvm_rq *nvm_rq_from_pdu(void *pdu)
252 return pdu - sizeof(struct nvm_rq);
255 static inline void *nvm_rq_to_pdu(struct nvm_rq *rqdata)
268 /* It is up to the target to mark blocks as closed. If the target does
269 * not do it, all blocks are marked as open, and nr_open_blocks
270 * represents the number of blocks in use
272 unsigned int nr_open_blocks; /* Number of used, writable blocks */
273 unsigned int nr_closed_blocks; /* Number of used, read-only blocks */
274 unsigned int nr_free_blocks; /* Number of unused blocks */
275 unsigned int nr_bad_blocks; /* Number of bad blocks */
279 struct nvm_block *blocks;
283 NVM_BLK_ST_FREE = 0x1, /* Free block */
284 NVM_BLK_ST_OPEN = 0x2, /* Open block - read-write */
285 NVM_BLK_ST_CLOSED = 0x4, /* Closed block - read-only */
286 NVM_BLK_ST_BAD = 0x8, /* Bad block */
290 struct list_head list;
298 /* system block cpu representation */
301 unsigned long erase_cnt;
302 unsigned int version;
303 char mmtype[NVM_MMTYPE_LEN];
304 struct ppa_addr fs_ppa;
308 struct nvm_dev_ops *ops;
310 struct list_head devices;
313 struct nvmm_type *mt;
317 struct nvm_sb_info sb;
319 /* Device information */
323 int sec_per_pg; /* only sectors for a single page */
327 int pfpg_size; /* size of buffer if all pages are to be read */
331 struct nvm_addr_format ppaf;
333 /* Calculated/Cached values. These do not reflect the actual usable
334 * blocks at run-time.
337 int plane_mode; /* drive device in single, double or quad mode */
339 int sec_per_pl; /* all sectors across planes */
343 /* lower page table */
347 unsigned long total_blocks;
348 unsigned long total_secs;
350 unsigned max_pages_per_blk;
352 unsigned long *lun_map;
355 struct nvm_id identity;
358 struct request_queue *q;
359 char name[DISK_NAME_LEN];
365 static inline struct ppa_addr generic_to_dev_addr(struct nvm_dev *dev,
370 l.ppa = ((u64)r.g.blk) << dev->ppaf.blk_offset;
371 l.ppa |= ((u64)r.g.pg) << dev->ppaf.pg_offset;
372 l.ppa |= ((u64)r.g.sec) << dev->ppaf.sect_offset;
373 l.ppa |= ((u64)r.g.pl) << dev->ppaf.pln_offset;
374 l.ppa |= ((u64)r.g.lun) << dev->ppaf.lun_offset;
375 l.ppa |= ((u64)r.g.ch) << dev->ppaf.ch_offset;
380 static inline struct ppa_addr dev_to_generic_addr(struct nvm_dev *dev,
386 * (r.ppa << X offset) & X len bitmask. X eq. blk, pg, etc.
388 l.g.blk = (r.ppa >> dev->ppaf.blk_offset) &
389 (((1 << dev->ppaf.blk_len) - 1));
390 l.g.pg |= (r.ppa >> dev->ppaf.pg_offset) &
391 (((1 << dev->ppaf.pg_len) - 1));
392 l.g.sec |= (r.ppa >> dev->ppaf.sect_offset) &
393 (((1 << dev->ppaf.sect_len) - 1));
394 l.g.pl |= (r.ppa >> dev->ppaf.pln_offset) &
395 (((1 << dev->ppaf.pln_len) - 1));
396 l.g.lun |= (r.ppa >> dev->ppaf.lun_offset) &
397 (((1 << dev->ppaf.lun_len) - 1));
398 l.g.ch |= (r.ppa >> dev->ppaf.ch_offset) &
399 (((1 << dev->ppaf.ch_len) - 1));
404 static inline int ppa_empty(struct ppa_addr ppa_addr)
406 return (ppa_addr.ppa == ADDR_EMPTY);
409 static inline void ppa_set_empty(struct ppa_addr *ppa_addr)
411 ppa_addr->ppa = ADDR_EMPTY;
414 static inline struct ppa_addr block_to_ppa(struct nvm_dev *dev,
415 struct nvm_block *blk)
418 struct nvm_lun *lun = blk->lun;
421 ppa.g.blk = blk->id % dev->blks_per_lun;
422 ppa.g.lun = lun->lun_id;
423 ppa.g.ch = lun->chnl_id;
428 static inline int ppa_to_slc(struct nvm_dev *dev, int slc_pg)
430 return dev->lptbl[slc_pg];
433 typedef blk_qc_t (nvm_tgt_make_rq_fn)(struct request_queue *, struct bio *);
434 typedef sector_t (nvm_tgt_capacity_fn)(void *);
435 typedef void *(nvm_tgt_init_fn)(struct nvm_dev *, struct gendisk *, int, int);
436 typedef void (nvm_tgt_exit_fn)(void *);
438 struct nvm_tgt_type {
440 unsigned int version[3];
442 /* target entry points */
443 nvm_tgt_make_rq_fn *make_rq;
444 nvm_tgt_capacity_fn *capacity;
445 nvm_end_io_fn *end_io;
447 /* module-specific init/teardown */
448 nvm_tgt_init_fn *init;
449 nvm_tgt_exit_fn *exit;
451 /* For internal use */
452 struct list_head list;
455 extern int nvm_register_tgt_type(struct nvm_tgt_type *);
456 extern void nvm_unregister_tgt_type(struct nvm_tgt_type *);
458 extern void *nvm_dev_dma_alloc(struct nvm_dev *, gfp_t, dma_addr_t *);
459 extern void nvm_dev_dma_free(struct nvm_dev *, void *, dma_addr_t);
461 typedef int (nvmm_register_fn)(struct nvm_dev *);
462 typedef void (nvmm_unregister_fn)(struct nvm_dev *);
463 typedef struct nvm_block *(nvmm_get_blk_fn)(struct nvm_dev *,
464 struct nvm_lun *, unsigned long);
465 typedef void (nvmm_put_blk_fn)(struct nvm_dev *, struct nvm_block *);
466 typedef int (nvmm_open_blk_fn)(struct nvm_dev *, struct nvm_block *);
467 typedef int (nvmm_close_blk_fn)(struct nvm_dev *, struct nvm_block *);
468 typedef void (nvmm_flush_blk_fn)(struct nvm_dev *, struct nvm_block *);
469 typedef int (nvmm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *);
470 typedef int (nvmm_erase_blk_fn)(struct nvm_dev *, struct nvm_block *,
472 typedef struct nvm_lun *(nvmm_get_lun_fn)(struct nvm_dev *, int);
473 typedef int (nvmm_reserve_lun)(struct nvm_dev *, int);
474 typedef void (nvmm_release_lun)(struct nvm_dev *, int);
475 typedef void (nvmm_lun_info_print_fn)(struct nvm_dev *);
477 typedef int (nvmm_get_area_fn)(struct nvm_dev *, sector_t *, sector_t);
478 typedef void (nvmm_put_area_fn)(struct nvm_dev *, sector_t);
482 unsigned int version[3];
484 nvmm_register_fn *register_mgr;
485 nvmm_unregister_fn *unregister_mgr;
487 /* Block administration callbacks */
488 nvmm_get_blk_fn *get_blk_unlocked;
489 nvmm_put_blk_fn *put_blk_unlocked;
490 nvmm_get_blk_fn *get_blk;
491 nvmm_put_blk_fn *put_blk;
492 nvmm_open_blk_fn *open_blk;
493 nvmm_close_blk_fn *close_blk;
494 nvmm_flush_blk_fn *flush_blk;
496 nvmm_submit_io_fn *submit_io;
497 nvmm_erase_blk_fn *erase_blk;
499 /* Configuration management */
500 nvmm_get_lun_fn *get_lun;
501 nvmm_reserve_lun *reserve_lun;
502 nvmm_release_lun *release_lun;
505 nvmm_lun_info_print_fn *lun_info_print;
507 nvmm_get_area_fn *get_area;
508 nvmm_put_area_fn *put_area;
510 struct list_head list;
513 extern int nvm_register_mgr(struct nvmm_type *);
514 extern void nvm_unregister_mgr(struct nvmm_type *);
516 extern struct nvm_block *nvm_get_blk_unlocked(struct nvm_dev *,
517 struct nvm_lun *, unsigned long);
518 extern void nvm_put_blk_unlocked(struct nvm_dev *, struct nvm_block *);
520 extern struct nvm_block *nvm_get_blk(struct nvm_dev *, struct nvm_lun *,
522 extern void nvm_put_blk(struct nvm_dev *, struct nvm_block *);
524 extern int nvm_register(struct request_queue *, char *,
525 struct nvm_dev_ops *);
526 extern void nvm_unregister(char *);
528 extern int nvm_submit_io(struct nvm_dev *, struct nvm_rq *);
529 extern void nvm_generic_to_addr_mode(struct nvm_dev *, struct nvm_rq *);
530 extern void nvm_addr_to_generic_mode(struct nvm_dev *, struct nvm_rq *);
531 extern int nvm_set_rqd_ppalist(struct nvm_dev *, struct nvm_rq *,
532 struct ppa_addr *, int);
533 extern void nvm_free_rqd_ppalist(struct nvm_dev *, struct nvm_rq *);
534 extern int nvm_erase_ppa(struct nvm_dev *, struct ppa_addr *, int);
535 extern int nvm_erase_blk(struct nvm_dev *, struct nvm_block *);
536 extern void nvm_end_io(struct nvm_rq *, int);
537 extern int nvm_submit_ppa(struct nvm_dev *, struct ppa_addr *, int, int, int,
539 extern int nvm_submit_ppa_list(struct nvm_dev *, struct ppa_addr *, int, int,
541 extern int nvm_bb_tbl_fold(struct nvm_dev *, u8 *, int);
544 #define NVM_SYSBLK_MAGIC 0x4E564D53 /* "NVMS" */
546 /* system block on disk representation */
547 struct nvm_system_block {
548 __be32 magic; /* magic signature */
549 __be32 seqnr; /* sequence number */
550 __be32 erase_cnt; /* erase count */
551 __be16 version; /* version number */
552 u8 mmtype[NVM_MMTYPE_LEN]; /* media manager name */
553 __be64 fs_ppa; /* PPA for media manager
557 extern int nvm_get_sysblock(struct nvm_dev *, struct nvm_sb_info *);
558 extern int nvm_update_sysblock(struct nvm_dev *, struct nvm_sb_info *);
559 extern int nvm_init_sysblock(struct nvm_dev *, struct nvm_sb_info *);
561 extern int nvm_dev_factory(struct nvm_dev *, int flags);
562 #else /* CONFIG_NVM */
565 static inline int nvm_register(struct request_queue *q, char *disk_name,
566 struct nvm_dev_ops *ops)
570 static inline void nvm_unregister(char *disk_name) {}
571 #endif /* CONFIG_NVM */
572 #endif /* LIGHTNVM.H */