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cd9e9808 MB |
1 | #ifndef NVM_H |
2 | #define NVM_H | |
3 | ||
4 | enum { | |
5 | NVM_IO_OK = 0, | |
6 | NVM_IO_REQUEUE = 1, | |
7 | NVM_IO_DONE = 2, | |
8 | NVM_IO_ERR = 3, | |
9 | ||
10 | NVM_IOTYPE_NONE = 0, | |
11 | NVM_IOTYPE_GC = 1, | |
12 | }; | |
13 | ||
14 | #ifdef CONFIG_NVM | |
15 | ||
16 | #include <linux/blkdev.h> | |
17 | #include <linux/types.h> | |
18 | #include <linux/file.h> | |
19 | #include <linux/dmapool.h> | |
e3eb3799 | 20 | #include <uapi/linux/lightnvm.h> |
cd9e9808 MB |
21 | |
22 | enum { | |
23 | /* HW Responsibilities */ | |
24 | NVM_RSP_L2P = 1 << 0, | |
25 | NVM_RSP_ECC = 1 << 1, | |
26 | ||
27 | /* Physical Adressing Mode */ | |
28 | NVM_ADDRMODE_LINEAR = 0, | |
29 | NVM_ADDRMODE_CHANNEL = 1, | |
30 | ||
31 | /* Plane programming mode for LUN */ | |
32 | NVM_PLANE_SINGLE = 0, | |
33 | NVM_PLANE_DOUBLE = 1, | |
34 | NVM_PLANE_QUAD = 2, | |
35 | ||
36 | /* Status codes */ | |
37 | NVM_RSP_SUCCESS = 0x0, | |
38 | NVM_RSP_NOT_CHANGEABLE = 0x1, | |
39 | NVM_RSP_ERR_FAILWRITE = 0x40ff, | |
40 | NVM_RSP_ERR_EMPTYPAGE = 0x42ff, | |
41 | ||
42 | /* Device opcodes */ | |
43 | NVM_OP_HBREAD = 0x02, | |
44 | NVM_OP_HBWRITE = 0x81, | |
45 | NVM_OP_PWRITE = 0x91, | |
46 | NVM_OP_PREAD = 0x92, | |
47 | NVM_OP_ERASE = 0x90, | |
48 | ||
49 | /* PPA Command Flags */ | |
50 | NVM_IO_SNGL_ACCESS = 0x0, | |
51 | NVM_IO_DUAL_ACCESS = 0x1, | |
52 | NVM_IO_QUAD_ACCESS = 0x2, | |
53 | ||
57b4bd06 | 54 | /* NAND Access Modes */ |
cd9e9808 MB |
55 | NVM_IO_SUSPEND = 0x80, |
56 | NVM_IO_SLC_MODE = 0x100, | |
57 | NVM_IO_SCRAMBLE_DISABLE = 0x200, | |
57b4bd06 MB |
58 | |
59 | /* Block Types */ | |
60 | NVM_BLK_T_FREE = 0x0, | |
61 | NVM_BLK_T_BAD = 0x1, | |
b5d4acd4 MB |
62 | NVM_BLK_T_GRWN_BAD = 0x2, |
63 | NVM_BLK_T_DEV = 0x4, | |
64 | NVM_BLK_T_HOST = 0x8, | |
f9a99950 MB |
65 | |
66 | /* Memory capabilities */ | |
67 | NVM_ID_CAP_SLC = 0x1, | |
68 | NVM_ID_CAP_CMD_SUSPEND = 0x2, | |
69 | NVM_ID_CAP_SCRAMBLE = 0x4, | |
70 | NVM_ID_CAP_ENCRYPT = 0x8, | |
ca5927e7 MB |
71 | |
72 | /* Memory types */ | |
73 | NVM_ID_FMTYPE_SLC = 0, | |
74 | NVM_ID_FMTYPE_MLC = 1, | |
75 | }; | |
76 | ||
77 | struct nvm_id_lp_mlc { | |
78 | u16 num_pairs; | |
79 | u8 pairs[886]; | |
80 | }; | |
81 | ||
82 | struct nvm_id_lp_tbl { | |
83 | __u8 id[8]; | |
84 | struct nvm_id_lp_mlc mlc; | |
cd9e9808 MB |
85 | }; |
86 | ||
87 | struct nvm_id_group { | |
88 | u8 mtype; | |
89 | u8 fmtype; | |
cd9e9808 MB |
90 | u8 num_ch; |
91 | u8 num_lun; | |
92 | u8 num_pln; | |
93 | u16 num_blk; | |
94 | u16 num_pg; | |
95 | u16 fpg_sz; | |
96 | u16 csecs; | |
97 | u16 sos; | |
98 | u32 trdt; | |
99 | u32 trdm; | |
100 | u32 tprt; | |
101 | u32 tprm; | |
102 | u32 tbet; | |
103 | u32 tbem; | |
104 | u32 mpos; | |
12be5edf | 105 | u32 mccap; |
cd9e9808 | 106 | u16 cpar; |
ca5927e7 MB |
107 | |
108 | struct nvm_id_lp_tbl lptbl; | |
73387e7b | 109 | }; |
cd9e9808 MB |
110 | |
111 | struct nvm_addr_format { | |
112 | u8 ch_offset; | |
113 | u8 ch_len; | |
114 | u8 lun_offset; | |
115 | u8 lun_len; | |
116 | u8 pln_offset; | |
117 | u8 pln_len; | |
118 | u8 blk_offset; | |
119 | u8 blk_len; | |
120 | u8 pg_offset; | |
121 | u8 pg_len; | |
122 | u8 sect_offset; | |
123 | u8 sect_len; | |
cd9e9808 MB |
124 | }; |
125 | ||
126 | struct nvm_id { | |
127 | u8 ver_id; | |
128 | u8 vmnt; | |
129 | u8 cgrps; | |
cd9e9808 MB |
130 | u32 cap; |
131 | u32 dom; | |
132 | struct nvm_addr_format ppaf; | |
cd9e9808 MB |
133 | struct nvm_id_group groups[4]; |
134 | } __packed; | |
135 | ||
136 | struct nvm_target { | |
137 | struct list_head list; | |
138 | struct nvm_tgt_type *type; | |
139 | struct gendisk *disk; | |
140 | }; | |
141 | ||
142 | struct nvm_tgt_instance { | |
143 | struct nvm_tgt_type *tt; | |
144 | }; | |
145 | ||
146 | #define ADDR_EMPTY (~0ULL) | |
147 | ||
148 | #define NVM_VERSION_MAJOR 1 | |
149 | #define NVM_VERSION_MINOR 0 | |
150 | #define NVM_VERSION_PATCH 0 | |
151 | ||
cd9e9808 | 152 | #define NVM_BLK_BITS (16) |
7386af27 MB |
153 | #define NVM_PG_BITS (16) |
154 | #define NVM_SEC_BITS (8) | |
155 | #define NVM_PL_BITS (8) | |
156 | #define NVM_LUN_BITS (8) | |
cd9e9808 MB |
157 | #define NVM_CH_BITS (8) |
158 | ||
159 | struct ppa_addr { | |
7386af27 | 160 | /* Generic structure for all addresses */ |
cd9e9808 | 161 | union { |
cd9e9808 | 162 | struct { |
7386af27 MB |
163 | u64 blk : NVM_BLK_BITS; |
164 | u64 pg : NVM_PG_BITS; | |
b7ceb7d5 MB |
165 | u64 sec : NVM_SEC_BITS; |
166 | u64 pl : NVM_PL_BITS; | |
b7ceb7d5 MB |
167 | u64 lun : NVM_LUN_BITS; |
168 | u64 ch : NVM_CH_BITS; | |
cd9e9808 MB |
169 | } g; |
170 | ||
b7ceb7d5 | 171 | u64 ppa; |
cd9e9808 | 172 | }; |
7386af27 | 173 | }; |
cd9e9808 | 174 | |
91276162 | 175 | struct nvm_rq; |
72d256ec | 176 | typedef void (nvm_end_io_fn)(struct nvm_rq *); |
91276162 | 177 | |
cd9e9808 MB |
178 | struct nvm_rq { |
179 | struct nvm_tgt_instance *ins; | |
180 | struct nvm_dev *dev; | |
181 | ||
182 | struct bio *bio; | |
183 | ||
184 | union { | |
185 | struct ppa_addr ppa_addr; | |
186 | dma_addr_t dma_ppa_list; | |
187 | }; | |
188 | ||
189 | struct ppa_addr *ppa_list; | |
190 | ||
191 | void *metadata; | |
192 | dma_addr_t dma_metadata; | |
193 | ||
91276162 MB |
194 | struct completion *wait; |
195 | nvm_end_io_fn *end_io; | |
196 | ||
cd9e9808 MB |
197 | uint8_t opcode; |
198 | uint16_t nr_pages; | |
199 | uint16_t flags; | |
72d256ec MB |
200 | |
201 | int error; | |
cd9e9808 MB |
202 | }; |
203 | ||
204 | static inline struct nvm_rq *nvm_rq_from_pdu(void *pdu) | |
205 | { | |
206 | return pdu - sizeof(struct nvm_rq); | |
207 | } | |
208 | ||
209 | static inline void *nvm_rq_to_pdu(struct nvm_rq *rqdata) | |
210 | { | |
211 | return rqdata + 1; | |
212 | } | |
213 | ||
214 | struct nvm_block; | |
215 | ||
216 | typedef int (nvm_l2p_update_fn)(u64, u32, __le64 *, void *); | |
11450469 | 217 | typedef int (nvm_bb_update_fn)(struct ppa_addr, int, u8 *, void *); |
16f26c3a MB |
218 | typedef int (nvm_id_fn)(struct nvm_dev *, struct nvm_id *); |
219 | typedef int (nvm_get_l2p_tbl_fn)(struct nvm_dev *, u64, u32, | |
cd9e9808 | 220 | nvm_l2p_update_fn *, void *); |
08236c6b | 221 | typedef int (nvm_op_bb_tbl_fn)(struct nvm_dev *, struct ppa_addr, int, |
cd9e9808 | 222 | nvm_bb_update_fn *, void *); |
16f26c3a MB |
223 | typedef int (nvm_op_set_bb_fn)(struct nvm_dev *, struct nvm_rq *, int); |
224 | typedef int (nvm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *); | |
225 | typedef int (nvm_erase_blk_fn)(struct nvm_dev *, struct nvm_rq *); | |
226 | typedef void *(nvm_create_dma_pool_fn)(struct nvm_dev *, char *); | |
cd9e9808 | 227 | typedef void (nvm_destroy_dma_pool_fn)(void *); |
16f26c3a | 228 | typedef void *(nvm_dev_dma_alloc_fn)(struct nvm_dev *, void *, gfp_t, |
cd9e9808 MB |
229 | dma_addr_t *); |
230 | typedef void (nvm_dev_dma_free_fn)(void *, void*, dma_addr_t); | |
231 | ||
232 | struct nvm_dev_ops { | |
233 | nvm_id_fn *identity; | |
234 | nvm_get_l2p_tbl_fn *get_l2p_tbl; | |
235 | nvm_op_bb_tbl_fn *get_bb_tbl; | |
11450469 | 236 | nvm_op_set_bb_fn *set_bb_tbl; |
cd9e9808 MB |
237 | |
238 | nvm_submit_io_fn *submit_io; | |
239 | nvm_erase_blk_fn *erase_block; | |
240 | ||
241 | nvm_create_dma_pool_fn *create_dma_pool; | |
242 | nvm_destroy_dma_pool_fn *destroy_dma_pool; | |
243 | nvm_dev_dma_alloc_fn *dev_dma_alloc; | |
244 | nvm_dev_dma_free_fn *dev_dma_free; | |
245 | ||
aedf17f4 | 246 | unsigned int max_phys_sect; |
cd9e9808 MB |
247 | }; |
248 | ||
249 | struct nvm_lun { | |
250 | int id; | |
251 | ||
252 | int lun_id; | |
253 | int chnl_id; | |
254 | ||
ff0e498b JG |
255 | /* It is up to the target to mark blocks as closed. If the target does |
256 | * not do it, all blocks are marked as open, and nr_open_blocks | |
257 | * represents the number of blocks in use | |
258 | */ | |
259 | unsigned int nr_open_blocks; /* Number of used, writable blocks */ | |
260 | unsigned int nr_closed_blocks; /* Number of used, read-only blocks */ | |
cd9e9808 | 261 | unsigned int nr_free_blocks; /* Number of unused blocks */ |
0b59733b | 262 | unsigned int nr_bad_blocks; /* Number of bad blocks */ |
cd9e9808 MB |
263 | |
264 | spinlock_t lock; | |
ff0e498b JG |
265 | |
266 | struct nvm_block *blocks; | |
267 | }; | |
268 | ||
269 | enum { | |
270 | NVM_BLK_ST_FREE = 0x1, /* Free block */ | |
271 | NVM_BLK_ST_OPEN = 0x2, /* Open block - read-write */ | |
272 | NVM_BLK_ST_CLOSED = 0x4, /* Closed block - read-only */ | |
273 | NVM_BLK_ST_BAD = 0x8, /* Bad block */ | |
cd9e9808 MB |
274 | }; |
275 | ||
276 | struct nvm_block { | |
277 | struct list_head list; | |
278 | struct nvm_lun *lun; | |
279 | unsigned long id; | |
280 | ||
281 | void *priv; | |
ff0e498b | 282 | int state; |
cd9e9808 MB |
283 | }; |
284 | ||
e3eb3799 MB |
285 | /* system block cpu representation */ |
286 | struct nvm_sb_info { | |
287 | unsigned long seqnr; | |
288 | unsigned long erase_cnt; | |
289 | unsigned int version; | |
290 | char mmtype[NVM_MMTYPE_LEN]; | |
291 | struct ppa_addr fs_ppa; | |
292 | }; | |
293 | ||
cd9e9808 MB |
294 | struct nvm_dev { |
295 | struct nvm_dev_ops *ops; | |
296 | ||
297 | struct list_head devices; | |
298 | struct list_head online_targets; | |
299 | ||
300 | /* Media manager */ | |
301 | struct nvmm_type *mt; | |
302 | void *mp; | |
303 | ||
304 | /* Device information */ | |
305 | int nr_chnls; | |
306 | int nr_planes; | |
307 | int luns_per_chnl; | |
308 | int sec_per_pg; /* only sectors for a single page */ | |
309 | int pgs_per_blk; | |
310 | int blks_per_lun; | |
311 | int sec_size; | |
312 | int oob_size; | |
f9a99950 | 313 | int mccap; |
7386af27 | 314 | struct nvm_addr_format ppaf; |
cd9e9808 MB |
315 | |
316 | /* Calculated/Cached values. These do not reflect the actual usable | |
317 | * blocks at run-time. | |
318 | */ | |
319 | int max_rq_size; | |
320 | int plane_mode; /* drive device in single, double or quad mode */ | |
321 | ||
322 | int sec_per_pl; /* all sectors across planes */ | |
323 | int sec_per_blk; | |
324 | int sec_per_lun; | |
325 | ||
ca5927e7 MB |
326 | /* lower page table */ |
327 | int lps_per_blk; | |
328 | int *lptbl; | |
329 | ||
cd9e9808 MB |
330 | unsigned long total_pages; |
331 | unsigned long total_blocks; | |
332 | int nr_luns; | |
333 | unsigned max_pages_per_blk; | |
334 | ||
335 | void *ppalist_pool; | |
336 | ||
337 | struct nvm_id identity; | |
338 | ||
339 | /* Backend device */ | |
340 | struct request_queue *q; | |
341 | char name[DISK_NAME_LEN]; | |
e3eb3799 MB |
342 | |
343 | struct mutex mlock; | |
cd9e9808 MB |
344 | }; |
345 | ||
7386af27 MB |
346 | static inline struct ppa_addr generic_to_dev_addr(struct nvm_dev *dev, |
347 | struct ppa_addr r) | |
cd9e9808 MB |
348 | { |
349 | struct ppa_addr l; | |
350 | ||
7386af27 MB |
351 | l.ppa = ((u64)r.g.blk) << dev->ppaf.blk_offset; |
352 | l.ppa |= ((u64)r.g.pg) << dev->ppaf.pg_offset; | |
353 | l.ppa |= ((u64)r.g.sec) << dev->ppaf.sect_offset; | |
354 | l.ppa |= ((u64)r.g.pl) << dev->ppaf.pln_offset; | |
355 | l.ppa |= ((u64)r.g.lun) << dev->ppaf.lun_offset; | |
356 | l.ppa |= ((u64)r.g.ch) << dev->ppaf.ch_offset; | |
cd9e9808 MB |
357 | |
358 | return l; | |
359 | } | |
360 | ||
7386af27 MB |
361 | static inline struct ppa_addr dev_to_generic_addr(struct nvm_dev *dev, |
362 | struct ppa_addr r) | |
cd9e9808 MB |
363 | { |
364 | struct ppa_addr l; | |
365 | ||
7386af27 MB |
366 | /* |
367 | * (r.ppa << X offset) & X len bitmask. X eq. blk, pg, etc. | |
368 | */ | |
369 | l.g.blk = (r.ppa >> dev->ppaf.blk_offset) & | |
370 | (((1 << dev->ppaf.blk_len) - 1)); | |
371 | l.g.pg |= (r.ppa >> dev->ppaf.pg_offset) & | |
372 | (((1 << dev->ppaf.pg_len) - 1)); | |
373 | l.g.sec |= (r.ppa >> dev->ppaf.sect_offset) & | |
374 | (((1 << dev->ppaf.sect_len) - 1)); | |
375 | l.g.pl |= (r.ppa >> dev->ppaf.pln_offset) & | |
376 | (((1 << dev->ppaf.pln_len) - 1)); | |
377 | l.g.lun |= (r.ppa >> dev->ppaf.lun_offset) & | |
378 | (((1 << dev->ppaf.lun_len) - 1)); | |
379 | l.g.ch |= (r.ppa >> dev->ppaf.ch_offset) & | |
380 | (((1 << dev->ppaf.ch_len) - 1)); | |
cd9e9808 MB |
381 | |
382 | return l; | |
383 | } | |
384 | ||
cd9e9808 MB |
385 | static inline int ppa_empty(struct ppa_addr ppa_addr) |
386 | { | |
387 | return (ppa_addr.ppa == ADDR_EMPTY); | |
388 | } | |
389 | ||
390 | static inline void ppa_set_empty(struct ppa_addr *ppa_addr) | |
391 | { | |
392 | ppa_addr->ppa = ADDR_EMPTY; | |
393 | } | |
394 | ||
395 | static inline struct ppa_addr block_to_ppa(struct nvm_dev *dev, | |
396 | struct nvm_block *blk) | |
397 | { | |
398 | struct ppa_addr ppa; | |
399 | struct nvm_lun *lun = blk->lun; | |
400 | ||
401 | ppa.ppa = 0; | |
402 | ppa.g.blk = blk->id % dev->blks_per_lun; | |
403 | ppa.g.lun = lun->lun_id; | |
404 | ppa.g.ch = lun->chnl_id; | |
405 | ||
406 | return ppa; | |
407 | } | |
408 | ||
e3eb3799 MB |
409 | static inline int ppa_to_slc(struct nvm_dev *dev, int slc_pg) |
410 | { | |
411 | return dev->lptbl[slc_pg]; | |
412 | } | |
413 | ||
dece1635 | 414 | typedef blk_qc_t (nvm_tgt_make_rq_fn)(struct request_queue *, struct bio *); |
cd9e9808 | 415 | typedef sector_t (nvm_tgt_capacity_fn)(void *); |
cd9e9808 MB |
416 | typedef void *(nvm_tgt_init_fn)(struct nvm_dev *, struct gendisk *, int, int); |
417 | typedef void (nvm_tgt_exit_fn)(void *); | |
418 | ||
419 | struct nvm_tgt_type { | |
420 | const char *name; | |
421 | unsigned int version[3]; | |
422 | ||
423 | /* target entry points */ | |
424 | nvm_tgt_make_rq_fn *make_rq; | |
425 | nvm_tgt_capacity_fn *capacity; | |
91276162 | 426 | nvm_end_io_fn *end_io; |
cd9e9808 MB |
427 | |
428 | /* module-specific init/teardown */ | |
429 | nvm_tgt_init_fn *init; | |
430 | nvm_tgt_exit_fn *exit; | |
431 | ||
432 | /* For internal use */ | |
433 | struct list_head list; | |
434 | }; | |
435 | ||
436 | extern int nvm_register_target(struct nvm_tgt_type *); | |
437 | extern void nvm_unregister_target(struct nvm_tgt_type *); | |
438 | ||
439 | extern void *nvm_dev_dma_alloc(struct nvm_dev *, gfp_t, dma_addr_t *); | |
440 | extern void nvm_dev_dma_free(struct nvm_dev *, void *, dma_addr_t); | |
441 | ||
442 | typedef int (nvmm_register_fn)(struct nvm_dev *); | |
443 | typedef void (nvmm_unregister_fn)(struct nvm_dev *); | |
444 | typedef struct nvm_block *(nvmm_get_blk_fn)(struct nvm_dev *, | |
445 | struct nvm_lun *, unsigned long); | |
446 | typedef void (nvmm_put_blk_fn)(struct nvm_dev *, struct nvm_block *); | |
447 | typedef int (nvmm_open_blk_fn)(struct nvm_dev *, struct nvm_block *); | |
448 | typedef int (nvmm_close_blk_fn)(struct nvm_dev *, struct nvm_block *); | |
449 | typedef void (nvmm_flush_blk_fn)(struct nvm_dev *, struct nvm_block *); | |
450 | typedef int (nvmm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *); | |
cd9e9808 MB |
451 | typedef int (nvmm_erase_blk_fn)(struct nvm_dev *, struct nvm_block *, |
452 | unsigned long); | |
453 | typedef struct nvm_lun *(nvmm_get_lun_fn)(struct nvm_dev *, int); | |
2fde0e48 | 454 | typedef void (nvmm_lun_info_print_fn)(struct nvm_dev *); |
cd9e9808 MB |
455 | |
456 | struct nvmm_type { | |
457 | const char *name; | |
458 | unsigned int version[3]; | |
459 | ||
460 | nvmm_register_fn *register_mgr; | |
461 | nvmm_unregister_fn *unregister_mgr; | |
462 | ||
463 | /* Block administration callbacks */ | |
ff0e498b JG |
464 | nvmm_get_blk_fn *get_blk_unlocked; |
465 | nvmm_put_blk_fn *put_blk_unlocked; | |
cd9e9808 MB |
466 | nvmm_get_blk_fn *get_blk; |
467 | nvmm_put_blk_fn *put_blk; | |
468 | nvmm_open_blk_fn *open_blk; | |
469 | nvmm_close_blk_fn *close_blk; | |
470 | nvmm_flush_blk_fn *flush_blk; | |
471 | ||
472 | nvmm_submit_io_fn *submit_io; | |
cd9e9808 MB |
473 | nvmm_erase_blk_fn *erase_blk; |
474 | ||
475 | /* Configuration management */ | |
476 | nvmm_get_lun_fn *get_lun; | |
477 | ||
478 | /* Statistics */ | |
2fde0e48 | 479 | nvmm_lun_info_print_fn *lun_info_print; |
cd9e9808 MB |
480 | struct list_head list; |
481 | }; | |
482 | ||
483 | extern int nvm_register_mgr(struct nvmm_type *); | |
484 | extern void nvm_unregister_mgr(struct nvmm_type *); | |
485 | ||
ff0e498b JG |
486 | extern struct nvm_block *nvm_get_blk_unlocked(struct nvm_dev *, |
487 | struct nvm_lun *, unsigned long); | |
488 | extern void nvm_put_blk_unlocked(struct nvm_dev *, struct nvm_block *); | |
489 | ||
cd9e9808 MB |
490 | extern struct nvm_block *nvm_get_blk(struct nvm_dev *, struct nvm_lun *, |
491 | unsigned long); | |
492 | extern void nvm_put_blk(struct nvm_dev *, struct nvm_block *); | |
493 | ||
494 | extern int nvm_register(struct request_queue *, char *, | |
495 | struct nvm_dev_ops *); | |
496 | extern void nvm_unregister(char *); | |
497 | ||
498 | extern int nvm_submit_io(struct nvm_dev *, struct nvm_rq *); | |
069368e9 MB |
499 | extern void nvm_generic_to_addr_mode(struct nvm_dev *, struct nvm_rq *); |
500 | extern void nvm_addr_to_generic_mode(struct nvm_dev *, struct nvm_rq *); | |
abd805ec MB |
501 | extern int nvm_set_rqd_ppalist(struct nvm_dev *, struct nvm_rq *, |
502 | struct ppa_addr *, int); | |
503 | extern void nvm_free_rqd_ppalist(struct nvm_dev *, struct nvm_rq *); | |
81e681d3 | 504 | extern int nvm_erase_ppa(struct nvm_dev *, struct ppa_addr *, int); |
cd9e9808 | 505 | extern int nvm_erase_blk(struct nvm_dev *, struct nvm_block *); |
91276162 | 506 | extern void nvm_end_io(struct nvm_rq *, int); |
09719b62 MB |
507 | extern int nvm_submit_ppa(struct nvm_dev *, struct ppa_addr *, int, int, int, |
508 | void *, int); | |
e3eb3799 MB |
509 | |
510 | /* sysblk.c */ | |
511 | #define NVM_SYSBLK_MAGIC 0x4E564D53 /* "NVMS" */ | |
512 | ||
513 | /* system block on disk representation */ | |
514 | struct nvm_system_block { | |
515 | __be32 magic; /* magic signature */ | |
516 | __be32 seqnr; /* sequence number */ | |
517 | __be32 erase_cnt; /* erase count */ | |
518 | __be16 version; /* version number */ | |
519 | u8 mmtype[NVM_MMTYPE_LEN]; /* media manager name */ | |
520 | __be64 fs_ppa; /* PPA for media manager | |
521 | * superblock */ | |
522 | }; | |
523 | ||
524 | extern int nvm_get_sysblock(struct nvm_dev *, struct nvm_sb_info *); | |
525 | extern int nvm_update_sysblock(struct nvm_dev *, struct nvm_sb_info *); | |
526 | extern int nvm_init_sysblock(struct nvm_dev *, struct nvm_sb_info *); | |
cd9e9808 MB |
527 | #else /* CONFIG_NVM */ |
528 | struct nvm_dev_ops; | |
529 | ||
530 | static inline int nvm_register(struct request_queue *q, char *disk_name, | |
531 | struct nvm_dev_ops *ops) | |
532 | { | |
533 | return -EINVAL; | |
534 | } | |
535 | static inline void nvm_unregister(char *disk_name) {} | |
536 | #endif /* CONFIG_NVM */ | |
537 | #endif /* LIGHTNVM.H */ |