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cd9e9808 MB |
1 | #ifndef NVM_H |
2 | #define NVM_H | |
3 | ||
a7fd9a4f JA |
4 | #include <linux/types.h> |
5 | ||
cd9e9808 MB |
6 | enum { |
7 | NVM_IO_OK = 0, | |
8 | NVM_IO_REQUEUE = 1, | |
9 | NVM_IO_DONE = 2, | |
10 | NVM_IO_ERR = 3, | |
11 | ||
12 | NVM_IOTYPE_NONE = 0, | |
13 | NVM_IOTYPE_GC = 1, | |
14 | }; | |
15 | ||
a7fd9a4f JA |
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) | |
22 | ||
23 | struct ppa_addr { | |
24 | /* Generic structure for all addresses */ | |
25 | union { | |
26 | struct { | |
27 | u64 blk : NVM_BLK_BITS; | |
28 | u64 pg : NVM_PG_BITS; | |
29 | u64 sec : NVM_SEC_BITS; | |
30 | u64 pl : NVM_PL_BITS; | |
31 | u64 lun : NVM_LUN_BITS; | |
32 | u64 ch : NVM_CH_BITS; | |
33 | } g; | |
34 | ||
35 | u64 ppa; | |
36 | }; | |
37 | }; | |
38 | ||
39 | struct nvm_rq; | |
40 | struct nvm_id; | |
41 | struct nvm_dev; | |
42 | ||
43 | typedef int (nvm_l2p_update_fn)(u64, u32, __le64 *, void *); | |
44 | typedef int (nvm_bb_update_fn)(struct ppa_addr, int, u8 *, void *); | |
45 | typedef int (nvm_id_fn)(struct nvm_dev *, struct nvm_id *); | |
46 | typedef int (nvm_get_l2p_tbl_fn)(struct nvm_dev *, u64, u32, | |
47 | nvm_l2p_update_fn *, void *); | |
48 | typedef int (nvm_op_bb_tbl_fn)(struct nvm_dev *, struct ppa_addr, int, | |
49 | nvm_bb_update_fn *, void *); | |
50 | typedef int (nvm_op_set_bb_fn)(struct nvm_dev *, struct nvm_rq *, int); | |
51 | typedef int (nvm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *); | |
52 | typedef int (nvm_erase_blk_fn)(struct nvm_dev *, struct nvm_rq *); | |
53 | typedef void *(nvm_create_dma_pool_fn)(struct nvm_dev *, char *); | |
54 | typedef void (nvm_destroy_dma_pool_fn)(void *); | |
55 | typedef void *(nvm_dev_dma_alloc_fn)(struct nvm_dev *, void *, gfp_t, | |
56 | dma_addr_t *); | |
57 | typedef void (nvm_dev_dma_free_fn)(void *, void*, dma_addr_t); | |
58 | ||
59 | struct nvm_dev_ops { | |
60 | nvm_id_fn *identity; | |
61 | nvm_get_l2p_tbl_fn *get_l2p_tbl; | |
62 | nvm_op_bb_tbl_fn *get_bb_tbl; | |
63 | nvm_op_set_bb_fn *set_bb_tbl; | |
64 | ||
65 | nvm_submit_io_fn *submit_io; | |
66 | nvm_erase_blk_fn *erase_block; | |
67 | ||
68 | nvm_create_dma_pool_fn *create_dma_pool; | |
69 | nvm_destroy_dma_pool_fn *destroy_dma_pool; | |
70 | nvm_dev_dma_alloc_fn *dev_dma_alloc; | |
71 | nvm_dev_dma_free_fn *dev_dma_free; | |
72 | ||
73 | unsigned int max_phys_sect; | |
74 | }; | |
75 | ||
76 | ||
77 | ||
cd9e9808 MB |
78 | #ifdef CONFIG_NVM |
79 | ||
80 | #include <linux/blkdev.h> | |
cd9e9808 MB |
81 | #include <linux/file.h> |
82 | #include <linux/dmapool.h> | |
e3eb3799 | 83 | #include <uapi/linux/lightnvm.h> |
cd9e9808 MB |
84 | |
85 | enum { | |
86 | /* HW Responsibilities */ | |
87 | NVM_RSP_L2P = 1 << 0, | |
88 | NVM_RSP_ECC = 1 << 1, | |
89 | ||
90 | /* Physical Adressing Mode */ | |
91 | NVM_ADDRMODE_LINEAR = 0, | |
92 | NVM_ADDRMODE_CHANNEL = 1, | |
93 | ||
94 | /* Plane programming mode for LUN */ | |
95 | NVM_PLANE_SINGLE = 0, | |
96 | NVM_PLANE_DOUBLE = 1, | |
97 | NVM_PLANE_QUAD = 2, | |
98 | ||
99 | /* Status codes */ | |
100 | NVM_RSP_SUCCESS = 0x0, | |
101 | NVM_RSP_NOT_CHANGEABLE = 0x1, | |
102 | NVM_RSP_ERR_FAILWRITE = 0x40ff, | |
103 | NVM_RSP_ERR_EMPTYPAGE = 0x42ff, | |
104 | ||
105 | /* Device opcodes */ | |
106 | NVM_OP_HBREAD = 0x02, | |
107 | NVM_OP_HBWRITE = 0x81, | |
108 | NVM_OP_PWRITE = 0x91, | |
109 | NVM_OP_PREAD = 0x92, | |
110 | NVM_OP_ERASE = 0x90, | |
111 | ||
112 | /* PPA Command Flags */ | |
113 | NVM_IO_SNGL_ACCESS = 0x0, | |
114 | NVM_IO_DUAL_ACCESS = 0x1, | |
115 | NVM_IO_QUAD_ACCESS = 0x2, | |
116 | ||
57b4bd06 | 117 | /* NAND Access Modes */ |
cd9e9808 MB |
118 | NVM_IO_SUSPEND = 0x80, |
119 | NVM_IO_SLC_MODE = 0x100, | |
120 | NVM_IO_SCRAMBLE_DISABLE = 0x200, | |
57b4bd06 MB |
121 | |
122 | /* Block Types */ | |
123 | NVM_BLK_T_FREE = 0x0, | |
124 | NVM_BLK_T_BAD = 0x1, | |
b5d4acd4 MB |
125 | NVM_BLK_T_GRWN_BAD = 0x2, |
126 | NVM_BLK_T_DEV = 0x4, | |
127 | NVM_BLK_T_HOST = 0x8, | |
f9a99950 MB |
128 | |
129 | /* Memory capabilities */ | |
130 | NVM_ID_CAP_SLC = 0x1, | |
131 | NVM_ID_CAP_CMD_SUSPEND = 0x2, | |
132 | NVM_ID_CAP_SCRAMBLE = 0x4, | |
133 | NVM_ID_CAP_ENCRYPT = 0x8, | |
ca5927e7 MB |
134 | |
135 | /* Memory types */ | |
136 | NVM_ID_FMTYPE_SLC = 0, | |
137 | NVM_ID_FMTYPE_MLC = 1, | |
bf643185 MB |
138 | |
139 | /* Device capabilities */ | |
140 | NVM_ID_DCAP_BBLKMGMT = 0x1, | |
141 | NVM_UD_DCAP_ECC = 0x2, | |
ca5927e7 MB |
142 | }; |
143 | ||
144 | struct nvm_id_lp_mlc { | |
145 | u16 num_pairs; | |
146 | u8 pairs[886]; | |
147 | }; | |
148 | ||
149 | struct nvm_id_lp_tbl { | |
150 | __u8 id[8]; | |
151 | struct nvm_id_lp_mlc mlc; | |
cd9e9808 MB |
152 | }; |
153 | ||
154 | struct nvm_id_group { | |
155 | u8 mtype; | |
156 | u8 fmtype; | |
cd9e9808 MB |
157 | u8 num_ch; |
158 | u8 num_lun; | |
159 | u8 num_pln; | |
160 | u16 num_blk; | |
161 | u16 num_pg; | |
162 | u16 fpg_sz; | |
163 | u16 csecs; | |
164 | u16 sos; | |
165 | u32 trdt; | |
166 | u32 trdm; | |
167 | u32 tprt; | |
168 | u32 tprm; | |
169 | u32 tbet; | |
170 | u32 tbem; | |
171 | u32 mpos; | |
12be5edf | 172 | u32 mccap; |
cd9e9808 | 173 | u16 cpar; |
ca5927e7 MB |
174 | |
175 | struct nvm_id_lp_tbl lptbl; | |
73387e7b | 176 | }; |
cd9e9808 MB |
177 | |
178 | struct nvm_addr_format { | |
179 | u8 ch_offset; | |
180 | u8 ch_len; | |
181 | u8 lun_offset; | |
182 | u8 lun_len; | |
183 | u8 pln_offset; | |
184 | u8 pln_len; | |
185 | u8 blk_offset; | |
186 | u8 blk_len; | |
187 | u8 pg_offset; | |
188 | u8 pg_len; | |
189 | u8 sect_offset; | |
190 | u8 sect_len; | |
cd9e9808 MB |
191 | }; |
192 | ||
193 | struct nvm_id { | |
194 | u8 ver_id; | |
195 | u8 vmnt; | |
196 | u8 cgrps; | |
cd9e9808 MB |
197 | u32 cap; |
198 | u32 dom; | |
199 | struct nvm_addr_format ppaf; | |
cd9e9808 MB |
200 | struct nvm_id_group groups[4]; |
201 | } __packed; | |
202 | ||
203 | struct nvm_target { | |
204 | struct list_head list; | |
205 | struct nvm_tgt_type *type; | |
206 | struct gendisk *disk; | |
207 | }; | |
208 | ||
209 | struct nvm_tgt_instance { | |
210 | struct nvm_tgt_type *tt; | |
211 | }; | |
212 | ||
213 | #define ADDR_EMPTY (~0ULL) | |
214 | ||
215 | #define NVM_VERSION_MAJOR 1 | |
216 | #define NVM_VERSION_MINOR 0 | |
217 | #define NVM_VERSION_PATCH 0 | |
218 | ||
91276162 | 219 | struct nvm_rq; |
72d256ec | 220 | typedef void (nvm_end_io_fn)(struct nvm_rq *); |
91276162 | 221 | |
cd9e9808 MB |
222 | struct nvm_rq { |
223 | struct nvm_tgt_instance *ins; | |
224 | struct nvm_dev *dev; | |
225 | ||
226 | struct bio *bio; | |
227 | ||
228 | union { | |
229 | struct ppa_addr ppa_addr; | |
230 | dma_addr_t dma_ppa_list; | |
231 | }; | |
232 | ||
233 | struct ppa_addr *ppa_list; | |
234 | ||
235 | void *metadata; | |
236 | dma_addr_t dma_metadata; | |
237 | ||
91276162 MB |
238 | struct completion *wait; |
239 | nvm_end_io_fn *end_io; | |
240 | ||
cd9e9808 MB |
241 | uint8_t opcode; |
242 | uint16_t nr_pages; | |
243 | uint16_t flags; | |
72d256ec MB |
244 | |
245 | int error; | |
cd9e9808 MB |
246 | }; |
247 | ||
248 | static inline struct nvm_rq *nvm_rq_from_pdu(void *pdu) | |
249 | { | |
250 | return pdu - sizeof(struct nvm_rq); | |
251 | } | |
252 | ||
253 | static inline void *nvm_rq_to_pdu(struct nvm_rq *rqdata) | |
254 | { | |
255 | return rqdata + 1; | |
256 | } | |
257 | ||
258 | struct nvm_block; | |
259 | ||
cd9e9808 MB |
260 | struct nvm_lun { |
261 | int id; | |
262 | ||
263 | int lun_id; | |
264 | int chnl_id; | |
265 | ||
ff0e498b JG |
266 | /* It is up to the target to mark blocks as closed. If the target does |
267 | * not do it, all blocks are marked as open, and nr_open_blocks | |
268 | * represents the number of blocks in use | |
269 | */ | |
270 | unsigned int nr_open_blocks; /* Number of used, writable blocks */ | |
271 | unsigned int nr_closed_blocks; /* Number of used, read-only blocks */ | |
cd9e9808 | 272 | unsigned int nr_free_blocks; /* Number of unused blocks */ |
0b59733b | 273 | unsigned int nr_bad_blocks; /* Number of bad blocks */ |
cd9e9808 MB |
274 | |
275 | spinlock_t lock; | |
ff0e498b JG |
276 | |
277 | struct nvm_block *blocks; | |
278 | }; | |
279 | ||
280 | enum { | |
281 | NVM_BLK_ST_FREE = 0x1, /* Free block */ | |
282 | NVM_BLK_ST_OPEN = 0x2, /* Open block - read-write */ | |
283 | NVM_BLK_ST_CLOSED = 0x4, /* Closed block - read-only */ | |
284 | NVM_BLK_ST_BAD = 0x8, /* Bad block */ | |
cd9e9808 MB |
285 | }; |
286 | ||
287 | struct nvm_block { | |
288 | struct list_head list; | |
289 | struct nvm_lun *lun; | |
290 | unsigned long id; | |
291 | ||
292 | void *priv; | |
ff0e498b | 293 | int state; |
cd9e9808 MB |
294 | }; |
295 | ||
e3eb3799 MB |
296 | /* system block cpu representation */ |
297 | struct nvm_sb_info { | |
298 | unsigned long seqnr; | |
299 | unsigned long erase_cnt; | |
300 | unsigned int version; | |
301 | char mmtype[NVM_MMTYPE_LEN]; | |
302 | struct ppa_addr fs_ppa; | |
303 | }; | |
304 | ||
cd9e9808 MB |
305 | struct nvm_dev { |
306 | struct nvm_dev_ops *ops; | |
307 | ||
308 | struct list_head devices; | |
309 | struct list_head online_targets; | |
310 | ||
311 | /* Media manager */ | |
312 | struct nvmm_type *mt; | |
313 | void *mp; | |
314 | ||
b7692076 MB |
315 | /* System blocks */ |
316 | struct nvm_sb_info sb; | |
317 | ||
cd9e9808 MB |
318 | /* Device information */ |
319 | int nr_chnls; | |
320 | int nr_planes; | |
321 | int luns_per_chnl; | |
322 | int sec_per_pg; /* only sectors for a single page */ | |
323 | int pgs_per_blk; | |
324 | int blks_per_lun; | |
325 | int sec_size; | |
326 | int oob_size; | |
f9a99950 | 327 | int mccap; |
7386af27 | 328 | struct nvm_addr_format ppaf; |
cd9e9808 MB |
329 | |
330 | /* Calculated/Cached values. These do not reflect the actual usable | |
331 | * blocks at run-time. | |
332 | */ | |
333 | int max_rq_size; | |
334 | int plane_mode; /* drive device in single, double or quad mode */ | |
335 | ||
336 | int sec_per_pl; /* all sectors across planes */ | |
337 | int sec_per_blk; | |
338 | int sec_per_lun; | |
339 | ||
ca5927e7 MB |
340 | /* lower page table */ |
341 | int lps_per_blk; | |
342 | int *lptbl; | |
343 | ||
cd9e9808 MB |
344 | unsigned long total_pages; |
345 | unsigned long total_blocks; | |
346 | int nr_luns; | |
347 | unsigned max_pages_per_blk; | |
348 | ||
349 | void *ppalist_pool; | |
350 | ||
351 | struct nvm_id identity; | |
352 | ||
353 | /* Backend device */ | |
354 | struct request_queue *q; | |
355 | char name[DISK_NAME_LEN]; | |
e3eb3799 MB |
356 | |
357 | struct mutex mlock; | |
cd9e9808 MB |
358 | }; |
359 | ||
7386af27 MB |
360 | static inline struct ppa_addr generic_to_dev_addr(struct nvm_dev *dev, |
361 | struct ppa_addr r) | |
cd9e9808 MB |
362 | { |
363 | struct ppa_addr l; | |
364 | ||
7386af27 MB |
365 | l.ppa = ((u64)r.g.blk) << dev->ppaf.blk_offset; |
366 | l.ppa |= ((u64)r.g.pg) << dev->ppaf.pg_offset; | |
367 | l.ppa |= ((u64)r.g.sec) << dev->ppaf.sect_offset; | |
368 | l.ppa |= ((u64)r.g.pl) << dev->ppaf.pln_offset; | |
369 | l.ppa |= ((u64)r.g.lun) << dev->ppaf.lun_offset; | |
370 | l.ppa |= ((u64)r.g.ch) << dev->ppaf.ch_offset; | |
cd9e9808 MB |
371 | |
372 | return l; | |
373 | } | |
374 | ||
7386af27 MB |
375 | static inline struct ppa_addr dev_to_generic_addr(struct nvm_dev *dev, |
376 | struct ppa_addr r) | |
cd9e9808 MB |
377 | { |
378 | struct ppa_addr l; | |
379 | ||
7386af27 MB |
380 | /* |
381 | * (r.ppa << X offset) & X len bitmask. X eq. blk, pg, etc. | |
382 | */ | |
383 | l.g.blk = (r.ppa >> dev->ppaf.blk_offset) & | |
384 | (((1 << dev->ppaf.blk_len) - 1)); | |
385 | l.g.pg |= (r.ppa >> dev->ppaf.pg_offset) & | |
386 | (((1 << dev->ppaf.pg_len) - 1)); | |
387 | l.g.sec |= (r.ppa >> dev->ppaf.sect_offset) & | |
388 | (((1 << dev->ppaf.sect_len) - 1)); | |
389 | l.g.pl |= (r.ppa >> dev->ppaf.pln_offset) & | |
390 | (((1 << dev->ppaf.pln_len) - 1)); | |
391 | l.g.lun |= (r.ppa >> dev->ppaf.lun_offset) & | |
392 | (((1 << dev->ppaf.lun_len) - 1)); | |
393 | l.g.ch |= (r.ppa >> dev->ppaf.ch_offset) & | |
394 | (((1 << dev->ppaf.ch_len) - 1)); | |
cd9e9808 MB |
395 | |
396 | return l; | |
397 | } | |
398 | ||
cd9e9808 MB |
399 | static inline int ppa_empty(struct ppa_addr ppa_addr) |
400 | { | |
401 | return (ppa_addr.ppa == ADDR_EMPTY); | |
402 | } | |
403 | ||
404 | static inline void ppa_set_empty(struct ppa_addr *ppa_addr) | |
405 | { | |
406 | ppa_addr->ppa = ADDR_EMPTY; | |
407 | } | |
408 | ||
409 | static inline struct ppa_addr block_to_ppa(struct nvm_dev *dev, | |
410 | struct nvm_block *blk) | |
411 | { | |
412 | struct ppa_addr ppa; | |
413 | struct nvm_lun *lun = blk->lun; | |
414 | ||
415 | ppa.ppa = 0; | |
416 | ppa.g.blk = blk->id % dev->blks_per_lun; | |
417 | ppa.g.lun = lun->lun_id; | |
418 | ppa.g.ch = lun->chnl_id; | |
419 | ||
420 | return ppa; | |
421 | } | |
422 | ||
e3eb3799 MB |
423 | static inline int ppa_to_slc(struct nvm_dev *dev, int slc_pg) |
424 | { | |
425 | return dev->lptbl[slc_pg]; | |
426 | } | |
427 | ||
dece1635 | 428 | typedef blk_qc_t (nvm_tgt_make_rq_fn)(struct request_queue *, struct bio *); |
cd9e9808 | 429 | typedef sector_t (nvm_tgt_capacity_fn)(void *); |
cd9e9808 MB |
430 | typedef void *(nvm_tgt_init_fn)(struct nvm_dev *, struct gendisk *, int, int); |
431 | typedef void (nvm_tgt_exit_fn)(void *); | |
432 | ||
433 | struct nvm_tgt_type { | |
434 | const char *name; | |
435 | unsigned int version[3]; | |
436 | ||
437 | /* target entry points */ | |
438 | nvm_tgt_make_rq_fn *make_rq; | |
439 | nvm_tgt_capacity_fn *capacity; | |
91276162 | 440 | nvm_end_io_fn *end_io; |
cd9e9808 MB |
441 | |
442 | /* module-specific init/teardown */ | |
443 | nvm_tgt_init_fn *init; | |
444 | nvm_tgt_exit_fn *exit; | |
445 | ||
446 | /* For internal use */ | |
447 | struct list_head list; | |
448 | }; | |
449 | ||
450 | extern int nvm_register_target(struct nvm_tgt_type *); | |
451 | extern void nvm_unregister_target(struct nvm_tgt_type *); | |
452 | ||
453 | extern void *nvm_dev_dma_alloc(struct nvm_dev *, gfp_t, dma_addr_t *); | |
454 | extern void nvm_dev_dma_free(struct nvm_dev *, void *, dma_addr_t); | |
455 | ||
456 | typedef int (nvmm_register_fn)(struct nvm_dev *); | |
457 | typedef void (nvmm_unregister_fn)(struct nvm_dev *); | |
458 | typedef struct nvm_block *(nvmm_get_blk_fn)(struct nvm_dev *, | |
459 | struct nvm_lun *, unsigned long); | |
460 | typedef void (nvmm_put_blk_fn)(struct nvm_dev *, struct nvm_block *); | |
461 | typedef int (nvmm_open_blk_fn)(struct nvm_dev *, struct nvm_block *); | |
462 | typedef int (nvmm_close_blk_fn)(struct nvm_dev *, struct nvm_block *); | |
463 | typedef void (nvmm_flush_blk_fn)(struct nvm_dev *, struct nvm_block *); | |
464 | typedef int (nvmm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *); | |
cd9e9808 MB |
465 | typedef int (nvmm_erase_blk_fn)(struct nvm_dev *, struct nvm_block *, |
466 | unsigned long); | |
467 | typedef struct nvm_lun *(nvmm_get_lun_fn)(struct nvm_dev *, int); | |
2fde0e48 | 468 | typedef void (nvmm_lun_info_print_fn)(struct nvm_dev *); |
cd9e9808 MB |
469 | |
470 | struct nvmm_type { | |
471 | const char *name; | |
472 | unsigned int version[3]; | |
473 | ||
474 | nvmm_register_fn *register_mgr; | |
475 | nvmm_unregister_fn *unregister_mgr; | |
476 | ||
477 | /* Block administration callbacks */ | |
ff0e498b JG |
478 | nvmm_get_blk_fn *get_blk_unlocked; |
479 | nvmm_put_blk_fn *put_blk_unlocked; | |
cd9e9808 MB |
480 | nvmm_get_blk_fn *get_blk; |
481 | nvmm_put_blk_fn *put_blk; | |
482 | nvmm_open_blk_fn *open_blk; | |
483 | nvmm_close_blk_fn *close_blk; | |
484 | nvmm_flush_blk_fn *flush_blk; | |
485 | ||
486 | nvmm_submit_io_fn *submit_io; | |
cd9e9808 MB |
487 | nvmm_erase_blk_fn *erase_blk; |
488 | ||
489 | /* Configuration management */ | |
490 | nvmm_get_lun_fn *get_lun; | |
491 | ||
492 | /* Statistics */ | |
2fde0e48 | 493 | nvmm_lun_info_print_fn *lun_info_print; |
cd9e9808 MB |
494 | struct list_head list; |
495 | }; | |
496 | ||
497 | extern int nvm_register_mgr(struct nvmm_type *); | |
498 | extern void nvm_unregister_mgr(struct nvmm_type *); | |
499 | ||
ff0e498b JG |
500 | extern struct nvm_block *nvm_get_blk_unlocked(struct nvm_dev *, |
501 | struct nvm_lun *, unsigned long); | |
502 | extern void nvm_put_blk_unlocked(struct nvm_dev *, struct nvm_block *); | |
503 | ||
cd9e9808 MB |
504 | extern struct nvm_block *nvm_get_blk(struct nvm_dev *, struct nvm_lun *, |
505 | unsigned long); | |
506 | extern void nvm_put_blk(struct nvm_dev *, struct nvm_block *); | |
507 | ||
508 | extern int nvm_register(struct request_queue *, char *, | |
509 | struct nvm_dev_ops *); | |
510 | extern void nvm_unregister(char *); | |
511 | ||
512 | extern int nvm_submit_io(struct nvm_dev *, struct nvm_rq *); | |
069368e9 MB |
513 | extern void nvm_generic_to_addr_mode(struct nvm_dev *, struct nvm_rq *); |
514 | extern void nvm_addr_to_generic_mode(struct nvm_dev *, struct nvm_rq *); | |
abd805ec MB |
515 | extern int nvm_set_rqd_ppalist(struct nvm_dev *, struct nvm_rq *, |
516 | struct ppa_addr *, int); | |
517 | extern void nvm_free_rqd_ppalist(struct nvm_dev *, struct nvm_rq *); | |
81e681d3 | 518 | extern int nvm_erase_ppa(struct nvm_dev *, struct ppa_addr *, int); |
cd9e9808 | 519 | extern int nvm_erase_blk(struct nvm_dev *, struct nvm_block *); |
91276162 | 520 | extern void nvm_end_io(struct nvm_rq *, int); |
09719b62 MB |
521 | extern int nvm_submit_ppa(struct nvm_dev *, struct ppa_addr *, int, int, int, |
522 | void *, int); | |
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523 | |
524 | /* sysblk.c */ | |
525 | #define NVM_SYSBLK_MAGIC 0x4E564D53 /* "NVMS" */ | |
526 | ||
527 | /* system block on disk representation */ | |
528 | struct nvm_system_block { | |
529 | __be32 magic; /* magic signature */ | |
530 | __be32 seqnr; /* sequence number */ | |
531 | __be32 erase_cnt; /* erase count */ | |
532 | __be16 version; /* version number */ | |
533 | u8 mmtype[NVM_MMTYPE_LEN]; /* media manager name */ | |
534 | __be64 fs_ppa; /* PPA for media manager | |
535 | * superblock */ | |
536 | }; | |
537 | ||
538 | extern int nvm_get_sysblock(struct nvm_dev *, struct nvm_sb_info *); | |
539 | extern int nvm_update_sysblock(struct nvm_dev *, struct nvm_sb_info *); | |
540 | extern int nvm_init_sysblock(struct nvm_dev *, struct nvm_sb_info *); | |
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541 | |
542 | extern int nvm_dev_factory(struct nvm_dev *, int flags); | |
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543 | #else /* CONFIG_NVM */ |
544 | struct nvm_dev_ops; | |
545 | ||
546 | static inline int nvm_register(struct request_queue *q, char *disk_name, | |
547 | struct nvm_dev_ops *ops) | |
548 | { | |
549 | return -EINVAL; | |
550 | } | |
551 | static inline void nvm_unregister(char *disk_name) {} | |
552 | #endif /* CONFIG_NVM */ | |
553 | #endif /* LIGHTNVM.H */ |