]>
Commit | Line | Data |
---|---|---|
b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
cd9e9808 MB |
2 | #ifndef NVM_H |
3 | #define NVM_H | |
4 | ||
b76eb20b | 5 | #include <linux/blkdev.h> |
a7fd9a4f | 6 | #include <linux/types.h> |
b76eb20b | 7 | #include <uapi/linux/lightnvm.h> |
a7fd9a4f | 8 | |
cd9e9808 MB |
9 | enum { |
10 | NVM_IO_OK = 0, | |
11 | NVM_IO_REQUEUE = 1, | |
12 | NVM_IO_DONE = 2, | |
13 | NVM_IO_ERR = 3, | |
14 | ||
15 | NVM_IOTYPE_NONE = 0, | |
16 | NVM_IOTYPE_GC = 1, | |
17 | }; | |
18 | ||
69471513 JG |
19 | /* common format */ |
20 | #define NVM_GEN_CH_BITS (8) | |
21 | #define NVM_GEN_LUN_BITS (8) | |
22 | #define NVM_GEN_BLK_BITS (16) | |
23 | #define NVM_GEN_RESERVED (32) | |
24 | ||
25 | /* 1.2 format */ | |
26 | #define NVM_12_PG_BITS (16) | |
27 | #define NVM_12_PL_BITS (4) | |
28 | #define NVM_12_SEC_BITS (4) | |
29 | #define NVM_12_RESERVED (8) | |
30 | ||
31 | /* 2.0 format */ | |
32 | #define NVM_20_SEC_BITS (24) | |
33 | #define NVM_20_RESERVED (8) | |
a7fd9a4f | 34 | |
f1d4e812 JG |
35 | enum { |
36 | NVM_OCSSD_SPEC_12 = 12, | |
37 | NVM_OCSSD_SPEC_20 = 20, | |
38 | }; | |
39 | ||
a7fd9a4f JA |
40 | struct ppa_addr { |
41 | /* Generic structure for all addresses */ | |
42 | union { | |
69471513 | 43 | /* generic device format */ |
a7fd9a4f | 44 | struct { |
69471513 JG |
45 | u64 ch : NVM_GEN_CH_BITS; |
46 | u64 lun : NVM_GEN_LUN_BITS; | |
47 | u64 blk : NVM_GEN_BLK_BITS; | |
48 | u64 reserved : NVM_GEN_RESERVED; | |
49 | } a; | |
50 | ||
51 | /* 1.2 device format */ | |
52 | struct { | |
53 | u64 ch : NVM_GEN_CH_BITS; | |
54 | u64 lun : NVM_GEN_LUN_BITS; | |
55 | u64 blk : NVM_GEN_BLK_BITS; | |
56 | u64 pg : NVM_12_PG_BITS; | |
57 | u64 pl : NVM_12_PL_BITS; | |
58 | u64 sec : NVM_12_SEC_BITS; | |
59 | u64 reserved : NVM_12_RESERVED; | |
a7fd9a4f JA |
60 | } g; |
61 | ||
69471513 JG |
62 | /* 2.0 device format */ |
63 | struct { | |
64 | u64 grp : NVM_GEN_CH_BITS; | |
65 | u64 pu : NVM_GEN_LUN_BITS; | |
66 | u64 chk : NVM_GEN_BLK_BITS; | |
67 | u64 sec : NVM_20_SEC_BITS; | |
68 | u64 reserved : NVM_20_RESERVED; | |
69 | } m; | |
70 | ||
df414b33 MB |
71 | struct { |
72 | u64 line : 63; | |
73 | u64 is_cached : 1; | |
74 | } c; | |
75 | ||
a7fd9a4f JA |
76 | u64 ppa; |
77 | }; | |
78 | }; | |
79 | ||
80 | struct nvm_rq; | |
81 | struct nvm_id; | |
82 | struct nvm_dev; | |
8e53624d | 83 | struct nvm_tgt_dev; |
a294c199 | 84 | struct nvm_chk_meta; |
a7fd9a4f | 85 | |
e46f4e48 | 86 | typedef int (nvm_id_fn)(struct nvm_dev *); |
e11903f5 | 87 | typedef int (nvm_op_bb_tbl_fn)(struct nvm_dev *, struct ppa_addr, u8 *); |
00ee6cc3 | 88 | typedef int (nvm_op_set_bb_fn)(struct nvm_dev *, struct ppa_addr *, int, int); |
a294c199 JG |
89 | typedef int (nvm_get_chk_meta_fn)(struct nvm_dev *, struct nvm_chk_meta *, |
90 | sector_t, int); | |
a7fd9a4f | 91 | typedef int (nvm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *); |
1a94b2d4 | 92 | typedef int (nvm_submit_io_sync_fn)(struct nvm_dev *, struct nvm_rq *); |
a7fd9a4f JA |
93 | typedef void *(nvm_create_dma_pool_fn)(struct nvm_dev *, char *); |
94 | typedef void (nvm_destroy_dma_pool_fn)(void *); | |
95 | typedef void *(nvm_dev_dma_alloc_fn)(struct nvm_dev *, void *, gfp_t, | |
96 | dma_addr_t *); | |
97 | typedef void (nvm_dev_dma_free_fn)(void *, void*, dma_addr_t); | |
98 | ||
99 | struct nvm_dev_ops { | |
100 | nvm_id_fn *identity; | |
a7fd9a4f JA |
101 | nvm_op_bb_tbl_fn *get_bb_tbl; |
102 | nvm_op_set_bb_fn *set_bb_tbl; | |
103 | ||
a294c199 JG |
104 | nvm_get_chk_meta_fn *get_chk_meta; |
105 | ||
a7fd9a4f | 106 | nvm_submit_io_fn *submit_io; |
1a94b2d4 | 107 | nvm_submit_io_sync_fn *submit_io_sync; |
a7fd9a4f JA |
108 | |
109 | nvm_create_dma_pool_fn *create_dma_pool; | |
110 | nvm_destroy_dma_pool_fn *destroy_dma_pool; | |
111 | nvm_dev_dma_alloc_fn *dev_dma_alloc; | |
112 | nvm_dev_dma_free_fn *dev_dma_free; | |
a7fd9a4f JA |
113 | }; |
114 | ||
cd9e9808 MB |
115 | #ifdef CONFIG_NVM |
116 | ||
117 | #include <linux/blkdev.h> | |
cd9e9808 MB |
118 | #include <linux/file.h> |
119 | #include <linux/dmapool.h> | |
e3eb3799 | 120 | #include <uapi/linux/lightnvm.h> |
cd9e9808 MB |
121 | |
122 | enum { | |
123 | /* HW Responsibilities */ | |
124 | NVM_RSP_L2P = 1 << 0, | |
125 | NVM_RSP_ECC = 1 << 1, | |
126 | ||
127 | /* Physical Adressing Mode */ | |
128 | NVM_ADDRMODE_LINEAR = 0, | |
129 | NVM_ADDRMODE_CHANNEL = 1, | |
130 | ||
131 | /* Plane programming mode for LUN */ | |
d5bdec8d MB |
132 | NVM_PLANE_SINGLE = 1, |
133 | NVM_PLANE_DOUBLE = 2, | |
134 | NVM_PLANE_QUAD = 4, | |
cd9e9808 MB |
135 | |
136 | /* Status codes */ | |
137 | NVM_RSP_SUCCESS = 0x0, | |
138 | NVM_RSP_NOT_CHANGEABLE = 0x1, | |
139 | NVM_RSP_ERR_FAILWRITE = 0x40ff, | |
140 | NVM_RSP_ERR_EMPTYPAGE = 0x42ff, | |
402ab9a8 | 141 | NVM_RSP_ERR_FAILECC = 0x4281, |
38ea2f76 | 142 | NVM_RSP_ERR_FAILCRC = 0x4004, |
402ab9a8 | 143 | NVM_RSP_WARN_HIGHECC = 0x4700, |
cd9e9808 MB |
144 | |
145 | /* Device opcodes */ | |
cd9e9808 MB |
146 | NVM_OP_PWRITE = 0x91, |
147 | NVM_OP_PREAD = 0x92, | |
148 | NVM_OP_ERASE = 0x90, | |
149 | ||
150 | /* PPA Command Flags */ | |
151 | NVM_IO_SNGL_ACCESS = 0x0, | |
152 | NVM_IO_DUAL_ACCESS = 0x1, | |
153 | NVM_IO_QUAD_ACCESS = 0x2, | |
154 | ||
57b4bd06 | 155 | /* NAND Access Modes */ |
cd9e9808 MB |
156 | NVM_IO_SUSPEND = 0x80, |
157 | NVM_IO_SLC_MODE = 0x100, | |
a7737f39 | 158 | NVM_IO_SCRAMBLE_ENABLE = 0x200, |
57b4bd06 MB |
159 | |
160 | /* Block Types */ | |
161 | NVM_BLK_T_FREE = 0x0, | |
162 | NVM_BLK_T_BAD = 0x1, | |
b5d4acd4 MB |
163 | NVM_BLK_T_GRWN_BAD = 0x2, |
164 | NVM_BLK_T_DEV = 0x4, | |
165 | NVM_BLK_T_HOST = 0x8, | |
f9a99950 MB |
166 | |
167 | /* Memory capabilities */ | |
168 | NVM_ID_CAP_SLC = 0x1, | |
169 | NVM_ID_CAP_CMD_SUSPEND = 0x2, | |
170 | NVM_ID_CAP_SCRAMBLE = 0x4, | |
171 | NVM_ID_CAP_ENCRYPT = 0x8, | |
ca5927e7 MB |
172 | |
173 | /* Memory types */ | |
174 | NVM_ID_FMTYPE_SLC = 0, | |
175 | NVM_ID_FMTYPE_MLC = 1, | |
bf643185 MB |
176 | |
177 | /* Device capabilities */ | |
178 | NVM_ID_DCAP_BBLKMGMT = 0x1, | |
179 | NVM_UD_DCAP_ECC = 0x2, | |
ca5927e7 MB |
180 | }; |
181 | ||
182 | struct nvm_id_lp_mlc { | |
183 | u16 num_pairs; | |
184 | u8 pairs[886]; | |
185 | }; | |
186 | ||
187 | struct nvm_id_lp_tbl { | |
188 | __u8 id[8]; | |
189 | struct nvm_id_lp_mlc mlc; | |
cd9e9808 MB |
190 | }; |
191 | ||
e46f4e48 | 192 | struct nvm_addrf_12 { |
c6ac3f35 | 193 | u8 ch_len; |
c6ac3f35 | 194 | u8 lun_len; |
c6ac3f35 | 195 | u8 blk_len; |
c6ac3f35 | 196 | u8 pg_len; |
e46f4e48 | 197 | u8 pln_len; |
a40afad9 | 198 | u8 sec_len; |
c6ac3f35 | 199 | |
e46f4e48 JG |
200 | u8 ch_offset; |
201 | u8 lun_offset; | |
202 | u8 blk_offset; | |
203 | u8 pg_offset; | |
204 | u8 pln_offset; | |
a40afad9 | 205 | u8 sec_offset; |
fae7fae4 | 206 | |
e46f4e48 JG |
207 | u64 ch_mask; |
208 | u64 lun_mask; | |
209 | u64 blk_mask; | |
210 | u64 pg_mask; | |
211 | u64 pln_mask; | |
212 | u64 sec_mask; | |
213 | }; | |
62771fe0 | 214 | |
e46f4e48 JG |
215 | struct nvm_addrf { |
216 | u8 ch_len; | |
217 | u8 lun_len; | |
218 | u8 chk_len; | |
219 | u8 sec_len; | |
220 | u8 rsv_len[2]; | |
c6ac3f35 | 221 | |
e46f4e48 JG |
222 | u8 ch_offset; |
223 | u8 lun_offset; | |
224 | u8 chk_offset; | |
225 | u8 sec_offset; | |
226 | u8 rsv_off[2]; | |
227 | ||
228 | u64 ch_mask; | |
229 | u64 lun_mask; | |
230 | u64 chk_mask; | |
231 | u64 sec_mask; | |
232 | u64 rsv_mask[2]; | |
233 | }; | |
cd9e9808 | 234 | |
32ef9412 JG |
235 | enum { |
236 | /* Chunk states */ | |
237 | NVM_CHK_ST_FREE = 1 << 0, | |
238 | NVM_CHK_ST_CLOSED = 1 << 1, | |
239 | NVM_CHK_ST_OPEN = 1 << 2, | |
240 | NVM_CHK_ST_OFFLINE = 1 << 3, | |
241 | ||
242 | /* Chunk types */ | |
243 | NVM_CHK_TP_W_SEQ = 1 << 0, | |
244 | NVM_CHK_TP_W_RAN = 1 << 1, | |
245 | NVM_CHK_TP_SZ_SPEC = 1 << 4, | |
246 | }; | |
247 | ||
a294c199 JG |
248 | /* |
249 | * Note: The structure size is linked to nvme_nvm_chk_meta such that the same | |
250 | * buffer can be used when converting from little endian to cpu addressing. | |
251 | */ | |
252 | struct nvm_chk_meta { | |
253 | u8 state; | |
254 | u8 type; | |
255 | u8 wi; | |
256 | u8 rsvd[5]; | |
257 | u64 slba; | |
258 | u64 cnlb; | |
259 | u64 wp; | |
260 | }; | |
261 | ||
cd9e9808 MB |
262 | struct nvm_target { |
263 | struct list_head list; | |
8e79b5cb | 264 | struct nvm_tgt_dev *dev; |
cd9e9808 MB |
265 | struct nvm_tgt_type *type; |
266 | struct gendisk *disk; | |
267 | }; | |
268 | ||
cd9e9808 MB |
269 | #define ADDR_EMPTY (~0ULL) |
270 | ||
e5392739 JG |
271 | #define NVM_TARGET_DEFAULT_OP (101) |
272 | #define NVM_TARGET_MIN_OP (3) | |
273 | #define NVM_TARGET_MAX_OP (80) | |
274 | ||
cd9e9808 MB |
275 | #define NVM_VERSION_MAJOR 1 |
276 | #define NVM_VERSION_MINOR 0 | |
277 | #define NVM_VERSION_PATCH 0 | |
278 | ||
89a09c56 MB |
279 | #define NVM_MAX_VLBA (64) /* max logical blocks in a vector command */ |
280 | ||
91276162 | 281 | struct nvm_rq; |
72d256ec | 282 | typedef void (nvm_end_io_fn)(struct nvm_rq *); |
91276162 | 283 | |
cd9e9808 | 284 | struct nvm_rq { |
8e53624d | 285 | struct nvm_tgt_dev *dev; |
cd9e9808 MB |
286 | |
287 | struct bio *bio; | |
288 | ||
289 | union { | |
290 | struct ppa_addr ppa_addr; | |
291 | dma_addr_t dma_ppa_list; | |
292 | }; | |
293 | ||
294 | struct ppa_addr *ppa_list; | |
295 | ||
003fad37 JG |
296 | void *meta_list; |
297 | dma_addr_t dma_meta_list; | |
cd9e9808 | 298 | |
91276162 MB |
299 | nvm_end_io_fn *end_io; |
300 | ||
cd9e9808 | 301 | uint8_t opcode; |
6d5be959 | 302 | uint16_t nr_ppas; |
cd9e9808 | 303 | uint16_t flags; |
72d256ec | 304 | |
9f867268 | 305 | u64 ppa_status; /* ppa media status */ |
72d256ec | 306 | int error; |
06894efe | 307 | |
d7b68016 MB |
308 | int is_seq; /* Sequential hint flag. 1.2 only */ |
309 | ||
06894efe | 310 | void *private; |
cd9e9808 MB |
311 | }; |
312 | ||
313 | static inline struct nvm_rq *nvm_rq_from_pdu(void *pdu) | |
314 | { | |
315 | return pdu - sizeof(struct nvm_rq); | |
316 | } | |
317 | ||
318 | static inline void *nvm_rq_to_pdu(struct nvm_rq *rqdata) | |
319 | { | |
320 | return rqdata + 1; | |
321 | } | |
322 | ||
ff0e498b JG |
323 | enum { |
324 | NVM_BLK_ST_FREE = 0x1, /* Free block */ | |
077d2389 | 325 | NVM_BLK_ST_TGT = 0x2, /* Block in use by target */ |
ff0e498b | 326 | NVM_BLK_ST_BAD = 0x8, /* Bad block */ |
cd9e9808 MB |
327 | }; |
328 | ||
e46f4e48 | 329 | /* Instance geometry */ |
8e79b5cb | 330 | struct nvm_geo { |
e46f4e48 | 331 | /* device reported version */ |
3cb98f84 JG |
332 | u8 major_ver_id; |
333 | u8 minor_ver_id; | |
e46f4e48 | 334 | |
f1d4e812 JG |
335 | /* kernel short version */ |
336 | u8 version; | |
337 | ||
e46f4e48 | 338 | /* instance specific geometry */ |
a40afad9 JG |
339 | int num_ch; |
340 | int num_lun; /* per channel */ | |
fae7fae4 | 341 | |
e46f4e48 JG |
342 | /* calculated values */ |
343 | int all_luns; /* across channels */ | |
344 | int all_chunks; /* across channels */ | |
345 | ||
346 | int op; /* over-provision in instance */ | |
347 | ||
348 | sector_t total_secs; /* across channels */ | |
349 | ||
350 | /* chunk geometry */ | |
a40afad9 | 351 | u32 num_chk; /* chunks per lun */ |
e46f4e48 JG |
352 | u32 clba; /* sectors per chunk */ |
353 | u16 csecs; /* sector size */ | |
354 | u16 sos; /* out-of-band area size */ | |
cd9e9808 | 355 | |
e46f4e48 JG |
356 | /* device write constrains */ |
357 | u32 ws_min; /* minimum write size */ | |
358 | u32 ws_opt; /* optimal write size */ | |
359 | u32 mw_cunits; /* distance required for successful read */ | |
3f48021b JG |
360 | u32 maxoc; /* maximum open chunks */ |
361 | u32 maxocpu; /* maximum open chunks per parallel unit */ | |
fae7fae4 | 362 | |
e46f4e48 JG |
363 | /* device capabilities */ |
364 | u32 mccap; | |
fae7fae4 | 365 | |
e46f4e48 JG |
366 | /* device timings */ |
367 | u32 trdt; /* Avg. Tread (ns) */ | |
368 | u32 trdm; /* Max Tread (ns) */ | |
369 | u32 tprt; /* Avg. Tprog (ns) */ | |
370 | u32 tprm; /* Max Tprog (ns) */ | |
371 | u32 tbet; /* Avg. Terase (ns) */ | |
372 | u32 tbem; /* Max Terase (ns) */ | |
e5392739 | 373 | |
e46f4e48 JG |
374 | /* generic address format */ |
375 | struct nvm_addrf addrf; | |
fae7fae4 | 376 | |
e46f4e48 JG |
377 | /* 1.2 compatibility */ |
378 | u8 vmnt; | |
379 | u32 cap; | |
380 | u32 dom; | |
381 | ||
382 | u8 mtype; | |
383 | u8 fmtype; | |
384 | ||
385 | u16 cpar; | |
386 | u32 mpos; | |
387 | ||
388 | u8 num_pln; | |
a40afad9 | 389 | u8 pln_mode; |
e46f4e48 JG |
390 | u16 num_pg; |
391 | u16 fpg_sz; | |
8e79b5cb JG |
392 | }; |
393 | ||
ade69e24 | 394 | /* sub-device structure */ |
8e79b5cb JG |
395 | struct nvm_tgt_dev { |
396 | /* Device information */ | |
397 | struct nvm_geo geo; | |
398 | ||
8e53624d JG |
399 | /* Base ppas for target LUNs */ |
400 | struct ppa_addr *luns; | |
401 | ||
8e79b5cb JG |
402 | struct request_queue *q; |
403 | ||
959e911b | 404 | struct nvm_dev *parent; |
8e53624d | 405 | void *map; |
8e79b5cb JG |
406 | }; |
407 | ||
408 | struct nvm_dev { | |
409 | struct nvm_dev_ops *ops; | |
410 | ||
411 | struct list_head devices; | |
412 | ||
8e79b5cb JG |
413 | /* Device information */ |
414 | struct nvm_geo geo; | |
cd9e9808 | 415 | |
da1e2849 | 416 | unsigned long *lun_map; |
75b85649 | 417 | void *dma_pool; |
cd9e9808 | 418 | |
cd9e9808 MB |
419 | /* Backend device */ |
420 | struct request_queue *q; | |
421 | char name[DISK_NAME_LEN]; | |
40267efd | 422 | void *private_data; |
e3eb3799 | 423 | |
8e53624d JG |
424 | void *rmap; |
425 | ||
e3eb3799 | 426 | struct mutex mlock; |
4c9dacb8 | 427 | spinlock_t lock; |
ade69e24 MB |
428 | |
429 | /* target management */ | |
430 | struct list_head area_list; | |
431 | struct list_head targets; | |
cd9e9808 MB |
432 | }; |
433 | ||
7100d50a | 434 | static inline struct ppa_addr generic_to_dev_addr(struct nvm_dev *dev, |
dab8ee9e | 435 | struct ppa_addr r) |
cd9e9808 | 436 | { |
7100d50a | 437 | struct nvm_geo *geo = &dev->geo; |
cd9e9808 MB |
438 | struct ppa_addr l; |
439 | ||
69471513 JG |
440 | if (geo->version == NVM_OCSSD_SPEC_12) { |
441 | struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&geo->addrf; | |
442 | ||
443 | l.ppa = ((u64)r.g.ch) << ppaf->ch_offset; | |
444 | l.ppa |= ((u64)r.g.lun) << ppaf->lun_offset; | |
445 | l.ppa |= ((u64)r.g.blk) << ppaf->blk_offset; | |
446 | l.ppa |= ((u64)r.g.pg) << ppaf->pg_offset; | |
447 | l.ppa |= ((u64)r.g.pl) << ppaf->pln_offset; | |
448 | l.ppa |= ((u64)r.g.sec) << ppaf->sec_offset; | |
449 | } else { | |
450 | struct nvm_addrf *lbaf = &geo->addrf; | |
451 | ||
452 | l.ppa = ((u64)r.m.grp) << lbaf->ch_offset; | |
453 | l.ppa |= ((u64)r.m.pu) << lbaf->lun_offset; | |
454 | l.ppa |= ((u64)r.m.chk) << lbaf->chk_offset; | |
455 | l.ppa |= ((u64)r.m.sec) << lbaf->sec_offset; | |
456 | } | |
cd9e9808 MB |
457 | |
458 | return l; | |
459 | } | |
460 | ||
7100d50a | 461 | static inline struct ppa_addr dev_to_generic_addr(struct nvm_dev *dev, |
dab8ee9e | 462 | struct ppa_addr r) |
cd9e9808 | 463 | { |
7100d50a | 464 | struct nvm_geo *geo = &dev->geo; |
cd9e9808 MB |
465 | struct ppa_addr l; |
466 | ||
5389a1df | 467 | l.ppa = 0; |
e46f4e48 | 468 | |
69471513 JG |
469 | if (geo->version == NVM_OCSSD_SPEC_12) { |
470 | struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&geo->addrf; | |
471 | ||
472 | l.g.ch = (r.ppa & ppaf->ch_mask) >> ppaf->ch_offset; | |
473 | l.g.lun = (r.ppa & ppaf->lun_mask) >> ppaf->lun_offset; | |
474 | l.g.blk = (r.ppa & ppaf->blk_mask) >> ppaf->blk_offset; | |
475 | l.g.pg = (r.ppa & ppaf->pg_mask) >> ppaf->pg_offset; | |
476 | l.g.pl = (r.ppa & ppaf->pln_mask) >> ppaf->pln_offset; | |
477 | l.g.sec = (r.ppa & ppaf->sec_mask) >> ppaf->sec_offset; | |
478 | } else { | |
479 | struct nvm_addrf *lbaf = &geo->addrf; | |
480 | ||
481 | l.m.grp = (r.ppa & lbaf->ch_mask) >> lbaf->ch_offset; | |
482 | l.m.pu = (r.ppa & lbaf->lun_mask) >> lbaf->lun_offset; | |
483 | l.m.chk = (r.ppa & lbaf->chk_mask) >> lbaf->chk_offset; | |
484 | l.m.sec = (r.ppa & lbaf->sec_mask) >> lbaf->sec_offset; | |
485 | } | |
cd9e9808 MB |
486 | |
487 | return l; | |
488 | } | |
489 | ||
dece1635 | 490 | typedef blk_qc_t (nvm_tgt_make_rq_fn)(struct request_queue *, struct bio *); |
cd9e9808 | 491 | typedef sector_t (nvm_tgt_capacity_fn)(void *); |
4af3f75d JG |
492 | typedef void *(nvm_tgt_init_fn)(struct nvm_tgt_dev *, struct gendisk *, |
493 | int flags); | |
a7c9e910 | 494 | typedef void (nvm_tgt_exit_fn)(void *, bool); |
9a69b0ed JG |
495 | typedef int (nvm_tgt_sysfs_init_fn)(struct gendisk *); |
496 | typedef void (nvm_tgt_sysfs_exit_fn)(struct gendisk *); | |
cd9e9808 | 497 | |
656e33ca MB |
498 | enum { |
499 | NVM_TGT_F_DEV_L2P = 0, | |
500 | NVM_TGT_F_HOST_L2P = 1 << 0, | |
501 | }; | |
502 | ||
cd9e9808 MB |
503 | struct nvm_tgt_type { |
504 | const char *name; | |
505 | unsigned int version[3]; | |
656e33ca | 506 | int flags; |
cd9e9808 MB |
507 | |
508 | /* target entry points */ | |
509 | nvm_tgt_make_rq_fn *make_rq; | |
510 | nvm_tgt_capacity_fn *capacity; | |
cd9e9808 MB |
511 | |
512 | /* module-specific init/teardown */ | |
513 | nvm_tgt_init_fn *init; | |
514 | nvm_tgt_exit_fn *exit; | |
515 | ||
9a69b0ed JG |
516 | /* sysfs */ |
517 | nvm_tgt_sysfs_init_fn *sysfs_init; | |
518 | nvm_tgt_sysfs_exit_fn *sysfs_exit; | |
519 | ||
cd9e9808 MB |
520 | /* For internal use */ |
521 | struct list_head list; | |
90014829 | 522 | struct module *owner; |
cd9e9808 MB |
523 | }; |
524 | ||
6063fe39 SL |
525 | extern int nvm_register_tgt_type(struct nvm_tgt_type *); |
526 | extern void nvm_unregister_tgt_type(struct nvm_tgt_type *); | |
cd9e9808 MB |
527 | |
528 | extern void *nvm_dev_dma_alloc(struct nvm_dev *, gfp_t, dma_addr_t *); | |
529 | extern void nvm_dev_dma_free(struct nvm_dev *, void *, dma_addr_t); | |
530 | ||
b0b4e09c MB |
531 | extern struct nvm_dev *nvm_alloc_dev(int); |
532 | extern int nvm_register(struct nvm_dev *); | |
533 | extern void nvm_unregister(struct nvm_dev *); | |
cd9e9808 | 534 | |
a294c199 JG |
535 | |
536 | extern int nvm_get_chunk_meta(struct nvm_tgt_dev *tgt_dev, | |
537 | struct nvm_chk_meta *meta, struct ppa_addr ppa, | |
538 | int nchks); | |
539 | ||
333ba053 JG |
540 | extern int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *, struct ppa_addr *, |
541 | int, int); | |
8e53624d | 542 | extern int nvm_submit_io(struct nvm_tgt_dev *, struct nvm_rq *); |
1a94b2d4 | 543 | extern int nvm_submit_io_sync(struct nvm_tgt_dev *, struct nvm_rq *); |
06894efe | 544 | extern void nvm_end_io(struct nvm_rq *); |
22e8c976 | 545 | extern int nvm_bb_tbl_fold(struct nvm_dev *, u8 *, int); |
333ba053 | 546 | extern int nvm_get_tgt_bb_tbl(struct nvm_tgt_dev *, struct ppa_addr, u8 *); |
e3eb3799 | 547 | |
cd9e9808 MB |
548 | #else /* CONFIG_NVM */ |
549 | struct nvm_dev_ops; | |
550 | ||
b0b4e09c MB |
551 | static inline struct nvm_dev *nvm_alloc_dev(int node) |
552 | { | |
553 | return ERR_PTR(-EINVAL); | |
554 | } | |
555 | static inline int nvm_register(struct nvm_dev *dev) | |
cd9e9808 MB |
556 | { |
557 | return -EINVAL; | |
558 | } | |
b0b4e09c | 559 | static inline void nvm_unregister(struct nvm_dev *dev) {} |
cd9e9808 MB |
560 | #endif /* CONFIG_NVM */ |
561 | #endif /* LIGHTNVM.H */ |