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1 | /* |
2 | * Copyright (C) 2015 Matias Bjorling <m@bjorling.me> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License version | |
6 | * 2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; see the file COPYING. If not, write to | |
15 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, | |
16 | * USA. | |
17 | * | |
18 | * Implementation of a generic nvm manager for Open-Channel SSDs. | |
19 | */ | |
20 | ||
21 | #include "gennvm.h" | |
22 | ||
4c9dacb8 WT |
23 | static int gennvm_get_area(struct nvm_dev *dev, sector_t *lba, sector_t len) |
24 | { | |
25 | struct gen_nvm *gn = dev->mp; | |
26 | struct gennvm_area *area, *prev, *next; | |
27 | sector_t begin = 0; | |
28 | sector_t max_sectors = (dev->sec_size * dev->total_secs) >> 9; | |
29 | ||
30 | if (len > max_sectors) | |
31 | return -EINVAL; | |
32 | ||
33 | area = kmalloc(sizeof(struct gennvm_area), GFP_KERNEL); | |
34 | if (!area) | |
35 | return -ENOMEM; | |
36 | ||
37 | prev = NULL; | |
38 | ||
39 | spin_lock(&dev->lock); | |
40 | list_for_each_entry(next, &gn->area_list, list) { | |
41 | if (begin + len > next->begin) { | |
42 | begin = next->end; | |
43 | prev = next; | |
44 | continue; | |
45 | } | |
46 | break; | |
47 | } | |
48 | ||
49 | if ((begin + len) > max_sectors) { | |
50 | spin_unlock(&dev->lock); | |
51 | kfree(area); | |
52 | return -EINVAL; | |
53 | } | |
54 | ||
55 | area->begin = *lba = begin; | |
56 | area->end = begin + len; | |
57 | ||
58 | if (prev) /* insert into sorted order */ | |
59 | list_add(&area->list, &prev->list); | |
60 | else | |
61 | list_add(&area->list, &gn->area_list); | |
62 | spin_unlock(&dev->lock); | |
63 | ||
64 | return 0; | |
65 | } | |
66 | ||
67 | static void gennvm_put_area(struct nvm_dev *dev, sector_t begin) | |
68 | { | |
69 | struct gen_nvm *gn = dev->mp; | |
70 | struct gennvm_area *area; | |
71 | ||
72 | spin_lock(&dev->lock); | |
73 | list_for_each_entry(area, &gn->area_list, list) { | |
74 | if (area->begin != begin) | |
75 | continue; | |
76 | ||
77 | list_del(&area->list); | |
78 | spin_unlock(&dev->lock); | |
79 | kfree(area); | |
80 | return; | |
81 | } | |
82 | spin_unlock(&dev->lock); | |
83 | } | |
84 | ||
48add0f5 MB |
85 | static void gennvm_blocks_free(struct nvm_dev *dev) |
86 | { | |
87 | struct gen_nvm *gn = dev->mp; | |
88 | struct gen_lun *lun; | |
89 | int i; | |
90 | ||
91 | gennvm_for_each_lun(gn, lun, i) { | |
92 | if (!lun->vlun.blocks) | |
93 | break; | |
94 | vfree(lun->vlun.blocks); | |
95 | } | |
96 | } | |
97 | ||
98 | static void gennvm_luns_free(struct nvm_dev *dev) | |
99 | { | |
100 | struct gen_nvm *gn = dev->mp; | |
101 | ||
102 | kfree(gn->luns); | |
103 | } | |
104 | ||
105 | static int gennvm_luns_init(struct nvm_dev *dev, struct gen_nvm *gn) | |
106 | { | |
107 | struct gen_lun *lun; | |
108 | int i; | |
109 | ||
110 | gn->luns = kcalloc(dev->nr_luns, sizeof(struct gen_lun), GFP_KERNEL); | |
111 | if (!gn->luns) | |
112 | return -ENOMEM; | |
113 | ||
114 | gennvm_for_each_lun(gn, lun, i) { | |
115 | spin_lock_init(&lun->vlun.lock); | |
116 | INIT_LIST_HEAD(&lun->free_list); | |
117 | INIT_LIST_HEAD(&lun->used_list); | |
118 | INIT_LIST_HEAD(&lun->bb_list); | |
119 | ||
120 | lun->reserved_blocks = 2; /* for GC only */ | |
121 | lun->vlun.id = i; | |
122 | lun->vlun.lun_id = i % dev->luns_per_chnl; | |
123 | lun->vlun.chnl_id = i / dev->luns_per_chnl; | |
124 | lun->vlun.nr_free_blocks = dev->blks_per_lun; | |
ff0e498b JG |
125 | lun->vlun.nr_open_blocks = 0; |
126 | lun->vlun.nr_closed_blocks = 0; | |
0b59733b | 127 | lun->vlun.nr_bad_blocks = 0; |
48add0f5 MB |
128 | } |
129 | return 0; | |
130 | } | |
131 | ||
22e8c976 MB |
132 | static int gennvm_block_bb(struct nvm_dev *dev, struct ppa_addr ppa, |
133 | u8 *blks, int nr_blks, void *private) | |
48add0f5 MB |
134 | { |
135 | struct gen_nvm *gn = private; | |
11450469 | 136 | struct gen_lun *lun; |
48add0f5 MB |
137 | struct nvm_block *blk; |
138 | int i; | |
139 | ||
22e8c976 MB |
140 | nr_blks = nvm_bb_tbl_fold(dev, blks, nr_blks); |
141 | if (nr_blks < 0) | |
142 | return nr_blks; | |
143 | ||
c3293a9a | 144 | lun = &gn->luns[(dev->luns_per_chnl * ppa.g.ch) + ppa.g.lun]; |
11450469 | 145 | |
22e8c976 | 146 | for (i = 0; i < nr_blks; i++) { |
11450469 MB |
147 | if (blks[i] == 0) |
148 | continue; | |
48add0f5 | 149 | |
48add0f5 MB |
150 | blk = &lun->vlun.blocks[i]; |
151 | if (!blk) { | |
152 | pr_err("gennvm: BB data is out of bounds.\n"); | |
153 | return -EINVAL; | |
154 | } | |
155 | ||
156 | list_move_tail(&blk->list, &lun->bb_list); | |
0b59733b | 157 | lun->vlun.nr_bad_blocks++; |
bdded155 | 158 | lun->vlun.nr_free_blocks--; |
48add0f5 MB |
159 | } |
160 | ||
161 | return 0; | |
162 | } | |
163 | ||
164 | static int gennvm_block_map(u64 slba, u32 nlb, __le64 *entries, void *private) | |
165 | { | |
166 | struct nvm_dev *dev = private; | |
167 | struct gen_nvm *gn = dev->mp; | |
48add0f5 MB |
168 | u64 elba = slba + nlb; |
169 | struct gen_lun *lun; | |
170 | struct nvm_block *blk; | |
171 | u64 i; | |
172 | int lun_id; | |
173 | ||
4ece44af | 174 | if (unlikely(elba > dev->total_secs)) { |
48add0f5 MB |
175 | pr_err("gennvm: L2P data from device is out of bounds!\n"); |
176 | return -EINVAL; | |
177 | } | |
178 | ||
179 | for (i = 0; i < nlb; i++) { | |
180 | u64 pba = le64_to_cpu(entries[i]); | |
181 | ||
4ece44af | 182 | if (unlikely(pba >= dev->total_secs && pba != U64_MAX)) { |
48add0f5 MB |
183 | pr_err("gennvm: L2P data entry is out of bounds!\n"); |
184 | return -EINVAL; | |
185 | } | |
186 | ||
187 | /* Address zero is a special one. The first page on a disk is | |
188 | * protected. It often holds internal device boot | |
189 | * information. | |
190 | */ | |
191 | if (!pba) | |
192 | continue; | |
193 | ||
194 | /* resolve block from physical address */ | |
195 | lun_id = div_u64(pba, dev->sec_per_lun); | |
196 | lun = &gn->luns[lun_id]; | |
197 | ||
198 | /* Calculate block offset into lun */ | |
199 | pba = pba - (dev->sec_per_lun * lun_id); | |
200 | blk = &lun->vlun.blocks[div_u64(pba, dev->sec_per_blk)]; | |
201 | ||
ff0e498b | 202 | if (!blk->state) { |
48add0f5 MB |
203 | /* at this point, we don't know anything about the |
204 | * block. It's up to the FTL on top to re-etablish the | |
ff0e498b | 205 | * block state. The block is assumed to be open. |
48add0f5 MB |
206 | */ |
207 | list_move_tail(&blk->list, &lun->used_list); | |
ff0e498b | 208 | blk->state = NVM_BLK_ST_OPEN; |
48add0f5 | 209 | lun->vlun.nr_free_blocks--; |
ff0e498b | 210 | lun->vlun.nr_open_blocks++; |
48add0f5 MB |
211 | } |
212 | } | |
213 | ||
214 | return 0; | |
215 | } | |
216 | ||
217 | static int gennvm_blocks_init(struct nvm_dev *dev, struct gen_nvm *gn) | |
218 | { | |
219 | struct gen_lun *lun; | |
220 | struct nvm_block *block; | |
221 | sector_t lun_iter, blk_iter, cur_block_id = 0; | |
222 | int ret; | |
223 | ||
224 | gennvm_for_each_lun(gn, lun, lun_iter) { | |
225 | lun->vlun.blocks = vzalloc(sizeof(struct nvm_block) * | |
226 | dev->blks_per_lun); | |
227 | if (!lun->vlun.blocks) | |
228 | return -ENOMEM; | |
229 | ||
230 | for (blk_iter = 0; blk_iter < dev->blks_per_lun; blk_iter++) { | |
231 | block = &lun->vlun.blocks[blk_iter]; | |
232 | ||
233 | INIT_LIST_HEAD(&block->list); | |
234 | ||
235 | block->lun = &lun->vlun; | |
236 | block->id = cur_block_id++; | |
237 | ||
238 | /* First block is reserved for device */ | |
0b59733b JG |
239 | if (unlikely(lun_iter == 0 && blk_iter == 0)) { |
240 | lun->vlun.nr_free_blocks--; | |
48add0f5 | 241 | continue; |
0b59733b | 242 | } |
48add0f5 MB |
243 | |
244 | list_add_tail(&block->list, &lun->free_list); | |
245 | } | |
246 | ||
247 | if (dev->ops->get_bb_tbl) { | |
11450469 MB |
248 | struct ppa_addr ppa; |
249 | ||
250 | ppa.ppa = 0; | |
251 | ppa.g.ch = lun->vlun.chnl_id; | |
252 | ppa.g.lun = lun->vlun.id; | |
7386af27 | 253 | ppa = generic_to_dev_addr(dev, ppa); |
11450469 | 254 | |
08236c6b | 255 | ret = dev->ops->get_bb_tbl(dev, ppa, |
22e8c976 | 256 | gennvm_block_bb, gn); |
48add0f5 MB |
257 | if (ret) |
258 | pr_err("gennvm: could not read BB table\n"); | |
259 | } | |
260 | } | |
261 | ||
29fd20b8 | 262 | if ((dev->identity.dom & NVM_RSP_L2P) && dev->ops->get_l2p_tbl) { |
4ece44af | 263 | ret = dev->ops->get_l2p_tbl(dev, 0, dev->total_secs, |
48add0f5 MB |
264 | gennvm_block_map, dev); |
265 | if (ret) { | |
266 | pr_err("gennvm: could not read L2P table.\n"); | |
267 | pr_warn("gennvm: default block initialization"); | |
268 | } | |
269 | } | |
270 | ||
271 | return 0; | |
272 | } | |
273 | ||
8261bd48 WT |
274 | static void gennvm_free(struct nvm_dev *dev) |
275 | { | |
276 | gennvm_blocks_free(dev); | |
277 | gennvm_luns_free(dev); | |
278 | kfree(dev->mp); | |
279 | dev->mp = NULL; | |
280 | } | |
281 | ||
48add0f5 MB |
282 | static int gennvm_register(struct nvm_dev *dev) |
283 | { | |
284 | struct gen_nvm *gn; | |
285 | int ret; | |
286 | ||
008b7443 MB |
287 | if (!try_module_get(THIS_MODULE)) |
288 | return -ENODEV; | |
289 | ||
48add0f5 MB |
290 | gn = kzalloc(sizeof(struct gen_nvm), GFP_KERNEL); |
291 | if (!gn) | |
292 | return -ENOMEM; | |
293 | ||
11450469 | 294 | gn->dev = dev; |
48add0f5 | 295 | gn->nr_luns = dev->nr_luns; |
4c9dacb8 | 296 | INIT_LIST_HEAD(&gn->area_list); |
48add0f5 MB |
297 | dev->mp = gn; |
298 | ||
299 | ret = gennvm_luns_init(dev, gn); | |
300 | if (ret) { | |
301 | pr_err("gennvm: could not initialize luns\n"); | |
302 | goto err; | |
303 | } | |
304 | ||
305 | ret = gennvm_blocks_init(dev, gn); | |
306 | if (ret) { | |
307 | pr_err("gennvm: could not initialize blocks\n"); | |
308 | goto err; | |
309 | } | |
310 | ||
311 | return 1; | |
312 | err: | |
8261bd48 | 313 | gennvm_free(dev); |
008b7443 | 314 | module_put(THIS_MODULE); |
48add0f5 MB |
315 | return ret; |
316 | } | |
317 | ||
318 | static void gennvm_unregister(struct nvm_dev *dev) | |
319 | { | |
8261bd48 | 320 | gennvm_free(dev); |
008b7443 | 321 | module_put(THIS_MODULE); |
48add0f5 MB |
322 | } |
323 | ||
ff0e498b | 324 | static struct nvm_block *gennvm_get_blk_unlocked(struct nvm_dev *dev, |
48add0f5 MB |
325 | struct nvm_lun *vlun, unsigned long flags) |
326 | { | |
327 | struct gen_lun *lun = container_of(vlun, struct gen_lun, vlun); | |
328 | struct nvm_block *blk = NULL; | |
329 | int is_gc = flags & NVM_IOTYPE_GC; | |
330 | ||
ff0e498b | 331 | assert_spin_locked(&vlun->lock); |
48add0f5 MB |
332 | |
333 | if (list_empty(&lun->free_list)) { | |
334 | pr_err_ratelimited("gennvm: lun %u have no free pages available", | |
335 | lun->vlun.id); | |
48add0f5 MB |
336 | goto out; |
337 | } | |
338 | ||
e9b76a80 | 339 | if (!is_gc && lun->vlun.nr_free_blocks < lun->reserved_blocks) |
48add0f5 | 340 | goto out; |
48add0f5 MB |
341 | |
342 | blk = list_first_entry(&lun->free_list, struct nvm_block, list); | |
343 | list_move_tail(&blk->list, &lun->used_list); | |
ff0e498b | 344 | blk->state = NVM_BLK_ST_OPEN; |
48add0f5 MB |
345 | |
346 | lun->vlun.nr_free_blocks--; | |
ff0e498b | 347 | lun->vlun.nr_open_blocks++; |
48add0f5 | 348 | |
48add0f5 | 349 | out: |
ff0e498b JG |
350 | return blk; |
351 | } | |
352 | ||
353 | static struct nvm_block *gennvm_get_blk(struct nvm_dev *dev, | |
354 | struct nvm_lun *vlun, unsigned long flags) | |
355 | { | |
356 | struct nvm_block *blk; | |
357 | ||
358 | spin_lock(&vlun->lock); | |
359 | blk = gennvm_get_blk_unlocked(dev, vlun, flags); | |
e9b76a80 | 360 | spin_unlock(&vlun->lock); |
48add0f5 MB |
361 | return blk; |
362 | } | |
363 | ||
ff0e498b | 364 | static void gennvm_put_blk_unlocked(struct nvm_dev *dev, struct nvm_block *blk) |
48add0f5 MB |
365 | { |
366 | struct nvm_lun *vlun = blk->lun; | |
367 | struct gen_lun *lun = container_of(vlun, struct gen_lun, vlun); | |
368 | ||
ff0e498b | 369 | assert_spin_locked(&vlun->lock); |
48add0f5 | 370 | |
ff0e498b | 371 | if (blk->state & NVM_BLK_ST_OPEN) { |
48add0f5 | 372 | list_move_tail(&blk->list, &lun->free_list); |
ff0e498b | 373 | lun->vlun.nr_open_blocks--; |
48add0f5 | 374 | lun->vlun.nr_free_blocks++; |
ff0e498b JG |
375 | blk->state = NVM_BLK_ST_FREE; |
376 | } else if (blk->state & NVM_BLK_ST_CLOSED) { | |
377 | list_move_tail(&blk->list, &lun->free_list); | |
378 | lun->vlun.nr_closed_blocks--; | |
379 | lun->vlun.nr_free_blocks++; | |
380 | blk->state = NVM_BLK_ST_FREE; | |
381 | } else if (blk->state & NVM_BLK_ST_BAD) { | |
48add0f5 | 382 | list_move_tail(&blk->list, &lun->bb_list); |
0b59733b | 383 | lun->vlun.nr_bad_blocks++; |
ff0e498b JG |
384 | blk->state = NVM_BLK_ST_BAD; |
385 | } else { | |
48add0f5 MB |
386 | WARN_ON_ONCE(1); |
387 | pr_err("gennvm: erroneous block type (%lu -> %u)\n", | |
ff0e498b | 388 | blk->id, blk->state); |
48add0f5 | 389 | list_move_tail(&blk->list, &lun->bb_list); |
0b59733b | 390 | lun->vlun.nr_bad_blocks++; |
ff0e498b | 391 | blk->state = NVM_BLK_ST_BAD; |
48add0f5 | 392 | } |
ff0e498b | 393 | } |
48add0f5 | 394 | |
ff0e498b JG |
395 | static void gennvm_put_blk(struct nvm_dev *dev, struct nvm_block *blk) |
396 | { | |
397 | struct nvm_lun *vlun = blk->lun; | |
398 | ||
399 | spin_lock(&vlun->lock); | |
400 | gennvm_put_blk_unlocked(dev, blk); | |
48add0f5 MB |
401 | spin_unlock(&vlun->lock); |
402 | } | |
403 | ||
48add0f5 MB |
404 | static void gennvm_blk_set_type(struct nvm_dev *dev, struct ppa_addr *ppa, |
405 | int type) | |
406 | { | |
407 | struct gen_nvm *gn = dev->mp; | |
408 | struct gen_lun *lun; | |
409 | struct nvm_block *blk; | |
410 | ||
411 | if (unlikely(ppa->g.ch > dev->nr_chnls || | |
412 | ppa->g.lun > dev->luns_per_chnl || | |
413 | ppa->g.blk > dev->blks_per_lun)) { | |
414 | WARN_ON_ONCE(1); | |
415 | pr_err("gennvm: ppa broken (ch: %u > %u lun: %u > %u blk: %u > %u", | |
416 | ppa->g.ch, dev->nr_chnls, | |
417 | ppa->g.lun, dev->luns_per_chnl, | |
418 | ppa->g.blk, dev->blks_per_lun); | |
419 | return; | |
420 | } | |
421 | ||
422 | lun = &gn->luns[ppa->g.lun * ppa->g.ch]; | |
423 | blk = &lun->vlun.blocks[ppa->g.blk]; | |
424 | ||
425 | /* will be moved to bb list on put_blk from target */ | |
ff0e498b | 426 | blk->state = type; |
48add0f5 MB |
427 | } |
428 | ||
429 | /* mark block bad. It is expected the target recover from the error. */ | |
430 | static void gennvm_mark_blk_bad(struct nvm_dev *dev, struct nvm_rq *rqd) | |
431 | { | |
432 | int i; | |
433 | ||
11450469 | 434 | if (!dev->ops->set_bb_tbl) |
48add0f5 MB |
435 | return; |
436 | ||
16f26c3a | 437 | if (dev->ops->set_bb_tbl(dev, rqd, 1)) |
48add0f5 MB |
438 | return; |
439 | ||
069368e9 | 440 | nvm_addr_to_generic_mode(dev, rqd); |
48add0f5 MB |
441 | |
442 | /* look up blocks and mark them as bad */ | |
443 | if (rqd->nr_pages > 1) | |
444 | for (i = 0; i < rqd->nr_pages; i++) | |
ff0e498b JG |
445 | gennvm_blk_set_type(dev, &rqd->ppa_list[i], |
446 | NVM_BLK_ST_BAD); | |
48add0f5 | 447 | else |
ff0e498b | 448 | gennvm_blk_set_type(dev, &rqd->ppa_addr, NVM_BLK_ST_BAD); |
48add0f5 MB |
449 | } |
450 | ||
72d256ec | 451 | static void gennvm_end_io(struct nvm_rq *rqd) |
48add0f5 MB |
452 | { |
453 | struct nvm_tgt_instance *ins = rqd->ins; | |
48add0f5 | 454 | |
72d256ec | 455 | switch (rqd->error) { |
48add0f5 | 456 | case NVM_RSP_SUCCESS: |
48add0f5 MB |
457 | case NVM_RSP_ERR_EMPTYPAGE: |
458 | break; | |
459 | case NVM_RSP_ERR_FAILWRITE: | |
460 | gennvm_mark_blk_bad(rqd->dev, rqd); | |
48add0f5 MB |
461 | } |
462 | ||
72d256ec | 463 | ins->tt->end_io(rqd); |
91276162 | 464 | } |
48add0f5 | 465 | |
91276162 MB |
466 | static int gennvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd) |
467 | { | |
468 | if (!dev->ops->submit_io) | |
469 | return -ENODEV; | |
470 | ||
471 | /* Convert address space */ | |
472 | nvm_generic_to_addr_mode(dev, rqd); | |
473 | ||
474 | rqd->dev = dev; | |
475 | rqd->end_io = gennvm_end_io; | |
476 | return dev->ops->submit_io(dev, rqd); | |
48add0f5 MB |
477 | } |
478 | ||
479 | static int gennvm_erase_blk(struct nvm_dev *dev, struct nvm_block *blk, | |
480 | unsigned long flags) | |
481 | { | |
069368e9 | 482 | struct ppa_addr addr = block_to_ppa(dev, blk); |
48add0f5 | 483 | |
81e681d3 | 484 | return nvm_erase_ppa(dev, &addr, 1); |
48add0f5 MB |
485 | } |
486 | ||
da1e2849 WT |
487 | static int gennvm_reserve_lun(struct nvm_dev *dev, int lunid) |
488 | { | |
489 | return test_and_set_bit(lunid, dev->lun_map); | |
490 | } | |
491 | ||
492 | static void gennvm_release_lun(struct nvm_dev *dev, int lunid) | |
493 | { | |
494 | WARN_ON(!test_and_clear_bit(lunid, dev->lun_map)); | |
495 | } | |
496 | ||
48add0f5 MB |
497 | static struct nvm_lun *gennvm_get_lun(struct nvm_dev *dev, int lunid) |
498 | { | |
499 | struct gen_nvm *gn = dev->mp; | |
500 | ||
da1e2849 WT |
501 | if (unlikely(lunid >= dev->nr_luns)) |
502 | return NULL; | |
503 | ||
48add0f5 MB |
504 | return &gn->luns[lunid].vlun; |
505 | } | |
506 | ||
2fde0e48 | 507 | static void gennvm_lun_info_print(struct nvm_dev *dev) |
48add0f5 MB |
508 | { |
509 | struct gen_nvm *gn = dev->mp; | |
510 | struct gen_lun *lun; | |
511 | unsigned int i; | |
512 | ||
2fde0e48 JG |
513 | |
514 | gennvm_for_each_lun(gn, lun, i) { | |
515 | spin_lock(&lun->vlun.lock); | |
516 | ||
ff0e498b | 517 | pr_info("%s: lun%8u\t%u\t%u\t%u\t%u\n", |
2fde0e48 JG |
518 | dev->name, i, |
519 | lun->vlun.nr_free_blocks, | |
ff0e498b JG |
520 | lun->vlun.nr_open_blocks, |
521 | lun->vlun.nr_closed_blocks, | |
2fde0e48 JG |
522 | lun->vlun.nr_bad_blocks); |
523 | ||
524 | spin_unlock(&lun->vlun.lock); | |
525 | } | |
48add0f5 MB |
526 | } |
527 | ||
528 | static struct nvmm_type gennvm = { | |
ff0e498b JG |
529 | .name = "gennvm", |
530 | .version = {0, 1, 0}, | |
531 | ||
532 | .register_mgr = gennvm_register, | |
533 | .unregister_mgr = gennvm_unregister, | |
48add0f5 | 534 | |
ff0e498b JG |
535 | .get_blk_unlocked = gennvm_get_blk_unlocked, |
536 | .put_blk_unlocked = gennvm_put_blk_unlocked, | |
48add0f5 | 537 | |
ff0e498b JG |
538 | .get_blk = gennvm_get_blk, |
539 | .put_blk = gennvm_put_blk, | |
48add0f5 | 540 | |
ff0e498b JG |
541 | .submit_io = gennvm_submit_io, |
542 | .erase_blk = gennvm_erase_blk, | |
48add0f5 | 543 | |
ff0e498b | 544 | .get_lun = gennvm_get_lun, |
da1e2849 WT |
545 | .reserve_lun = gennvm_reserve_lun, |
546 | .release_lun = gennvm_release_lun, | |
ff0e498b | 547 | .lun_info_print = gennvm_lun_info_print, |
4c9dacb8 WT |
548 | |
549 | .get_area = gennvm_get_area, | |
550 | .put_area = gennvm_put_area, | |
551 | ||
48add0f5 MB |
552 | }; |
553 | ||
554 | static int __init gennvm_module_init(void) | |
555 | { | |
556 | return nvm_register_mgr(&gennvm); | |
557 | } | |
558 | ||
559 | static void gennvm_module_exit(void) | |
560 | { | |
561 | nvm_unregister_mgr(&gennvm); | |
562 | } | |
563 | ||
564 | module_init(gennvm_module_init); | |
565 | module_exit(gennvm_module_exit); | |
566 | MODULE_LICENSE("GPL v2"); | |
567 | MODULE_DESCRIPTION("Generic media manager for Open-Channel SSDs"); |