Commit | Line | Data |
---|---|---|
48add0f5 MB |
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 | ||
e11903f5 MB |
132 | static int gennvm_block_bb(struct gen_nvm *gn, struct ppa_addr ppa, |
133 | u8 *blks, int nr_blks) | |
48add0f5 | 134 | { |
e11903f5 | 135 | struct nvm_dev *dev = gn->dev; |
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 | 150 | blk = &lun->vlun.blocks[i]; |
48add0f5 | 151 | list_move_tail(&blk->list, &lun->bb_list); |
0b59733b | 152 | lun->vlun.nr_bad_blocks++; |
bdded155 | 153 | lun->vlun.nr_free_blocks--; |
48add0f5 MB |
154 | } |
155 | ||
156 | return 0; | |
157 | } | |
158 | ||
159 | static int gennvm_block_map(u64 slba, u32 nlb, __le64 *entries, void *private) | |
160 | { | |
161 | struct nvm_dev *dev = private; | |
162 | struct gen_nvm *gn = dev->mp; | |
48add0f5 MB |
163 | u64 elba = slba + nlb; |
164 | struct gen_lun *lun; | |
165 | struct nvm_block *blk; | |
166 | u64 i; | |
167 | int lun_id; | |
168 | ||
4ece44af | 169 | if (unlikely(elba > dev->total_secs)) { |
48add0f5 MB |
170 | pr_err("gennvm: L2P data from device is out of bounds!\n"); |
171 | return -EINVAL; | |
172 | } | |
173 | ||
174 | for (i = 0; i < nlb; i++) { | |
175 | u64 pba = le64_to_cpu(entries[i]); | |
176 | ||
4ece44af | 177 | if (unlikely(pba >= dev->total_secs && pba != U64_MAX)) { |
48add0f5 MB |
178 | pr_err("gennvm: L2P data entry is out of bounds!\n"); |
179 | return -EINVAL; | |
180 | } | |
181 | ||
182 | /* Address zero is a special one. The first page on a disk is | |
183 | * protected. It often holds internal device boot | |
184 | * information. | |
185 | */ | |
186 | if (!pba) | |
187 | continue; | |
188 | ||
189 | /* resolve block from physical address */ | |
190 | lun_id = div_u64(pba, dev->sec_per_lun); | |
191 | lun = &gn->luns[lun_id]; | |
192 | ||
193 | /* Calculate block offset into lun */ | |
194 | pba = pba - (dev->sec_per_lun * lun_id); | |
195 | blk = &lun->vlun.blocks[div_u64(pba, dev->sec_per_blk)]; | |
196 | ||
ff0e498b | 197 | if (!blk->state) { |
48add0f5 MB |
198 | /* at this point, we don't know anything about the |
199 | * block. It's up to the FTL on top to re-etablish the | |
ff0e498b | 200 | * block state. The block is assumed to be open. |
48add0f5 MB |
201 | */ |
202 | list_move_tail(&blk->list, &lun->used_list); | |
ff0e498b | 203 | blk->state = NVM_BLK_ST_OPEN; |
48add0f5 | 204 | lun->vlun.nr_free_blocks--; |
ff0e498b | 205 | lun->vlun.nr_open_blocks++; |
48add0f5 MB |
206 | } |
207 | } | |
208 | ||
209 | return 0; | |
210 | } | |
211 | ||
212 | static int gennvm_blocks_init(struct nvm_dev *dev, struct gen_nvm *gn) | |
213 | { | |
214 | struct gen_lun *lun; | |
215 | struct nvm_block *block; | |
216 | sector_t lun_iter, blk_iter, cur_block_id = 0; | |
e11903f5 MB |
217 | int ret, nr_blks; |
218 | u8 *blks; | |
219 | ||
220 | nr_blks = dev->blks_per_lun * dev->plane_mode; | |
221 | blks = kmalloc(nr_blks, GFP_KERNEL); | |
222 | if (!blks) | |
223 | return -ENOMEM; | |
48add0f5 MB |
224 | |
225 | gennvm_for_each_lun(gn, lun, lun_iter) { | |
226 | lun->vlun.blocks = vzalloc(sizeof(struct nvm_block) * | |
227 | dev->blks_per_lun); | |
e11903f5 MB |
228 | if (!lun->vlun.blocks) { |
229 | kfree(blks); | |
48add0f5 | 230 | return -ENOMEM; |
e11903f5 | 231 | } |
48add0f5 MB |
232 | |
233 | for (blk_iter = 0; blk_iter < dev->blks_per_lun; blk_iter++) { | |
234 | block = &lun->vlun.blocks[blk_iter]; | |
235 | ||
236 | INIT_LIST_HEAD(&block->list); | |
237 | ||
238 | block->lun = &lun->vlun; | |
239 | block->id = cur_block_id++; | |
240 | ||
241 | /* First block is reserved for device */ | |
0b59733b JG |
242 | if (unlikely(lun_iter == 0 && blk_iter == 0)) { |
243 | lun->vlun.nr_free_blocks--; | |
48add0f5 | 244 | continue; |
0b59733b | 245 | } |
48add0f5 MB |
246 | |
247 | list_add_tail(&block->list, &lun->free_list); | |
248 | } | |
249 | ||
250 | if (dev->ops->get_bb_tbl) { | |
11450469 MB |
251 | struct ppa_addr ppa; |
252 | ||
253 | ppa.ppa = 0; | |
254 | ppa.g.ch = lun->vlun.chnl_id; | |
293a6e8e | 255 | ppa.g.lun = lun->vlun.lun_id; |
11450469 | 256 | |
e11903f5 MB |
257 | ret = nvm_get_bb_tbl(dev, ppa, blks); |
258 | if (ret) | |
259 | pr_err("gennvm: could not get BB table\n"); | |
260 | ||
261 | ret = gennvm_block_bb(gn, ppa, blks, nr_blks); | |
48add0f5 | 262 | if (ret) |
e11903f5 | 263 | pr_err("gennvm: BB table map failed\n"); |
48add0f5 MB |
264 | } |
265 | } | |
266 | ||
29fd20b8 | 267 | if ((dev->identity.dom & NVM_RSP_L2P) && dev->ops->get_l2p_tbl) { |
4ece44af | 268 | ret = dev->ops->get_l2p_tbl(dev, 0, dev->total_secs, |
48add0f5 MB |
269 | gennvm_block_map, dev); |
270 | if (ret) { | |
271 | pr_err("gennvm: could not read L2P table.\n"); | |
272 | pr_warn("gennvm: default block initialization"); | |
273 | } | |
274 | } | |
275 | ||
e11903f5 | 276 | kfree(blks); |
48add0f5 MB |
277 | return 0; |
278 | } | |
279 | ||
8261bd48 WT |
280 | static void gennvm_free(struct nvm_dev *dev) |
281 | { | |
282 | gennvm_blocks_free(dev); | |
283 | gennvm_luns_free(dev); | |
284 | kfree(dev->mp); | |
285 | dev->mp = NULL; | |
286 | } | |
287 | ||
48add0f5 MB |
288 | static int gennvm_register(struct nvm_dev *dev) |
289 | { | |
290 | struct gen_nvm *gn; | |
291 | int ret; | |
292 | ||
008b7443 MB |
293 | if (!try_module_get(THIS_MODULE)) |
294 | return -ENODEV; | |
295 | ||
48add0f5 MB |
296 | gn = kzalloc(sizeof(struct gen_nvm), GFP_KERNEL); |
297 | if (!gn) | |
298 | return -ENOMEM; | |
299 | ||
11450469 | 300 | gn->dev = dev; |
48add0f5 | 301 | gn->nr_luns = dev->nr_luns; |
4c9dacb8 | 302 | INIT_LIST_HEAD(&gn->area_list); |
48add0f5 MB |
303 | dev->mp = gn; |
304 | ||
305 | ret = gennvm_luns_init(dev, gn); | |
306 | if (ret) { | |
307 | pr_err("gennvm: could not initialize luns\n"); | |
308 | goto err; | |
309 | } | |
310 | ||
311 | ret = gennvm_blocks_init(dev, gn); | |
312 | if (ret) { | |
313 | pr_err("gennvm: could not initialize blocks\n"); | |
314 | goto err; | |
315 | } | |
316 | ||
317 | return 1; | |
318 | err: | |
8261bd48 | 319 | gennvm_free(dev); |
008b7443 | 320 | module_put(THIS_MODULE); |
48add0f5 MB |
321 | return ret; |
322 | } | |
323 | ||
324 | static void gennvm_unregister(struct nvm_dev *dev) | |
325 | { | |
8261bd48 | 326 | gennvm_free(dev); |
008b7443 | 327 | module_put(THIS_MODULE); |
48add0f5 MB |
328 | } |
329 | ||
ff0e498b | 330 | static struct nvm_block *gennvm_get_blk_unlocked(struct nvm_dev *dev, |
48add0f5 MB |
331 | struct nvm_lun *vlun, unsigned long flags) |
332 | { | |
333 | struct gen_lun *lun = container_of(vlun, struct gen_lun, vlun); | |
334 | struct nvm_block *blk = NULL; | |
335 | int is_gc = flags & NVM_IOTYPE_GC; | |
336 | ||
ff0e498b | 337 | assert_spin_locked(&vlun->lock); |
48add0f5 MB |
338 | |
339 | if (list_empty(&lun->free_list)) { | |
340 | pr_err_ratelimited("gennvm: lun %u have no free pages available", | |
341 | lun->vlun.id); | |
48add0f5 MB |
342 | goto out; |
343 | } | |
344 | ||
e9b76a80 | 345 | if (!is_gc && lun->vlun.nr_free_blocks < lun->reserved_blocks) |
48add0f5 | 346 | goto out; |
48add0f5 MB |
347 | |
348 | blk = list_first_entry(&lun->free_list, struct nvm_block, list); | |
349 | list_move_tail(&blk->list, &lun->used_list); | |
ff0e498b | 350 | blk->state = NVM_BLK_ST_OPEN; |
48add0f5 MB |
351 | |
352 | lun->vlun.nr_free_blocks--; | |
ff0e498b | 353 | lun->vlun.nr_open_blocks++; |
48add0f5 | 354 | |
48add0f5 | 355 | out: |
ff0e498b JG |
356 | return blk; |
357 | } | |
358 | ||
359 | static struct nvm_block *gennvm_get_blk(struct nvm_dev *dev, | |
360 | struct nvm_lun *vlun, unsigned long flags) | |
361 | { | |
362 | struct nvm_block *blk; | |
363 | ||
364 | spin_lock(&vlun->lock); | |
365 | blk = gennvm_get_blk_unlocked(dev, vlun, flags); | |
e9b76a80 | 366 | spin_unlock(&vlun->lock); |
48add0f5 MB |
367 | return blk; |
368 | } | |
369 | ||
ff0e498b | 370 | static void gennvm_put_blk_unlocked(struct nvm_dev *dev, struct nvm_block *blk) |
48add0f5 MB |
371 | { |
372 | struct nvm_lun *vlun = blk->lun; | |
373 | struct gen_lun *lun = container_of(vlun, struct gen_lun, vlun); | |
374 | ||
ff0e498b | 375 | assert_spin_locked(&vlun->lock); |
48add0f5 | 376 | |
ff0e498b | 377 | if (blk->state & NVM_BLK_ST_OPEN) { |
48add0f5 | 378 | list_move_tail(&blk->list, &lun->free_list); |
ff0e498b | 379 | lun->vlun.nr_open_blocks--; |
48add0f5 | 380 | lun->vlun.nr_free_blocks++; |
ff0e498b JG |
381 | blk->state = NVM_BLK_ST_FREE; |
382 | } else if (blk->state & NVM_BLK_ST_CLOSED) { | |
383 | list_move_tail(&blk->list, &lun->free_list); | |
384 | lun->vlun.nr_closed_blocks--; | |
385 | lun->vlun.nr_free_blocks++; | |
386 | blk->state = NVM_BLK_ST_FREE; | |
387 | } else if (blk->state & NVM_BLK_ST_BAD) { | |
48add0f5 | 388 | list_move_tail(&blk->list, &lun->bb_list); |
0b59733b | 389 | lun->vlun.nr_bad_blocks++; |
ff0e498b JG |
390 | blk->state = NVM_BLK_ST_BAD; |
391 | } else { | |
48add0f5 MB |
392 | WARN_ON_ONCE(1); |
393 | pr_err("gennvm: erroneous block type (%lu -> %u)\n", | |
ff0e498b | 394 | blk->id, blk->state); |
48add0f5 | 395 | list_move_tail(&blk->list, &lun->bb_list); |
0b59733b | 396 | lun->vlun.nr_bad_blocks++; |
ff0e498b | 397 | blk->state = NVM_BLK_ST_BAD; |
48add0f5 | 398 | } |
ff0e498b | 399 | } |
48add0f5 | 400 | |
ff0e498b JG |
401 | static void gennvm_put_blk(struct nvm_dev *dev, struct nvm_block *blk) |
402 | { | |
403 | struct nvm_lun *vlun = blk->lun; | |
404 | ||
405 | spin_lock(&vlun->lock); | |
406 | gennvm_put_blk_unlocked(dev, blk); | |
48add0f5 MB |
407 | spin_unlock(&vlun->lock); |
408 | } | |
409 | ||
04a8aa17 | 410 | static void gennvm_mark_blk(struct nvm_dev *dev, struct ppa_addr ppa, int type) |
48add0f5 MB |
411 | { |
412 | struct gen_nvm *gn = dev->mp; | |
413 | struct gen_lun *lun; | |
414 | struct nvm_block *blk; | |
415 | ||
a63d5cf2 | 416 | pr_debug("gennvm: ppa (ch: %u lun: %u blk: %u pg: %u) -> %u\n", |
04a8aa17 | 417 | ppa.g.ch, ppa.g.lun, ppa.g.blk, ppa.g.pg, type); |
a63d5cf2 | 418 | |
04a8aa17 MB |
419 | if (unlikely(ppa.g.ch > dev->nr_chnls || |
420 | ppa.g.lun > dev->luns_per_chnl || | |
421 | ppa.g.blk > dev->blks_per_lun)) { | |
48add0f5 MB |
422 | WARN_ON_ONCE(1); |
423 | pr_err("gennvm: ppa broken (ch: %u > %u lun: %u > %u blk: %u > %u", | |
04a8aa17 MB |
424 | ppa.g.ch, dev->nr_chnls, |
425 | ppa.g.lun, dev->luns_per_chnl, | |
426 | ppa.g.blk, dev->blks_per_lun); | |
48add0f5 MB |
427 | return; |
428 | } | |
429 | ||
04a8aa17 MB |
430 | lun = &gn->luns[ppa.g.lun * ppa.g.ch]; |
431 | blk = &lun->vlun.blocks[ppa.g.blk]; | |
48add0f5 MB |
432 | |
433 | /* will be moved to bb list on put_blk from target */ | |
ff0e498b | 434 | blk->state = type; |
48add0f5 MB |
435 | } |
436 | ||
a63d5cf2 MB |
437 | /* |
438 | * mark block bad in gennvm. It is expected that the target recovers separately | |
439 | */ | |
48add0f5 MB |
440 | static void gennvm_mark_blk_bad(struct nvm_dev *dev, struct nvm_rq *rqd) |
441 | { | |
a63d5cf2 MB |
442 | int bit = -1; |
443 | int max_secs = dev->ops->max_phys_sect; | |
444 | void *comp_bits = &rqd->ppa_status; | |
48add0f5 | 445 | |
069368e9 | 446 | nvm_addr_to_generic_mode(dev, rqd); |
48add0f5 MB |
447 | |
448 | /* look up blocks and mark them as bad */ | |
6d5be959 | 449 | if (rqd->nr_ppas == 1) { |
04a8aa17 | 450 | gennvm_mark_blk(dev, rqd->ppa_addr, NVM_BLK_ST_BAD); |
a63d5cf2 MB |
451 | return; |
452 | } | |
453 | ||
454 | while ((bit = find_next_bit(comp_bits, max_secs, bit + 1)) < max_secs) | |
04a8aa17 | 455 | gennvm_mark_blk(dev, rqd->ppa_list[bit], NVM_BLK_ST_BAD); |
48add0f5 MB |
456 | } |
457 | ||
72d256ec | 458 | static void gennvm_end_io(struct nvm_rq *rqd) |
48add0f5 MB |
459 | { |
460 | struct nvm_tgt_instance *ins = rqd->ins; | |
48add0f5 | 461 | |
a63d5cf2 | 462 | if (rqd->error == NVM_RSP_ERR_FAILWRITE) |
48add0f5 | 463 | gennvm_mark_blk_bad(rqd->dev, rqd); |
48add0f5 | 464 | |
72d256ec | 465 | ins->tt->end_io(rqd); |
91276162 | 466 | } |
48add0f5 | 467 | |
91276162 MB |
468 | static int gennvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd) |
469 | { | |
470 | if (!dev->ops->submit_io) | |
471 | return -ENODEV; | |
472 | ||
473 | /* Convert address space */ | |
474 | nvm_generic_to_addr_mode(dev, rqd); | |
475 | ||
476 | rqd->dev = dev; | |
477 | rqd->end_io = gennvm_end_io; | |
478 | return dev->ops->submit_io(dev, rqd); | |
48add0f5 MB |
479 | } |
480 | ||
481 | static int gennvm_erase_blk(struct nvm_dev *dev, struct nvm_block *blk, | |
482 | unsigned long flags) | |
483 | { | |
069368e9 | 484 | struct ppa_addr addr = block_to_ppa(dev, blk); |
48add0f5 | 485 | |
81e681d3 | 486 | return nvm_erase_ppa(dev, &addr, 1); |
48add0f5 MB |
487 | } |
488 | ||
da1e2849 WT |
489 | static int gennvm_reserve_lun(struct nvm_dev *dev, int lunid) |
490 | { | |
491 | return test_and_set_bit(lunid, dev->lun_map); | |
492 | } | |
493 | ||
494 | static void gennvm_release_lun(struct nvm_dev *dev, int lunid) | |
495 | { | |
496 | WARN_ON(!test_and_clear_bit(lunid, dev->lun_map)); | |
497 | } | |
498 | ||
48add0f5 MB |
499 | static struct nvm_lun *gennvm_get_lun(struct nvm_dev *dev, int lunid) |
500 | { | |
501 | struct gen_nvm *gn = dev->mp; | |
502 | ||
da1e2849 WT |
503 | if (unlikely(lunid >= dev->nr_luns)) |
504 | return NULL; | |
505 | ||
48add0f5 MB |
506 | return &gn->luns[lunid].vlun; |
507 | } | |
508 | ||
2fde0e48 | 509 | static void gennvm_lun_info_print(struct nvm_dev *dev) |
48add0f5 MB |
510 | { |
511 | struct gen_nvm *gn = dev->mp; | |
512 | struct gen_lun *lun; | |
513 | unsigned int i; | |
514 | ||
2fde0e48 JG |
515 | |
516 | gennvm_for_each_lun(gn, lun, i) { | |
517 | spin_lock(&lun->vlun.lock); | |
518 | ||
ff0e498b | 519 | pr_info("%s: lun%8u\t%u\t%u\t%u\t%u\n", |
2fde0e48 JG |
520 | dev->name, i, |
521 | lun->vlun.nr_free_blocks, | |
ff0e498b JG |
522 | lun->vlun.nr_open_blocks, |
523 | lun->vlun.nr_closed_blocks, | |
2fde0e48 JG |
524 | lun->vlun.nr_bad_blocks); |
525 | ||
526 | spin_unlock(&lun->vlun.lock); | |
527 | } | |
48add0f5 MB |
528 | } |
529 | ||
530 | static struct nvmm_type gennvm = { | |
ff0e498b JG |
531 | .name = "gennvm", |
532 | .version = {0, 1, 0}, | |
533 | ||
534 | .register_mgr = gennvm_register, | |
535 | .unregister_mgr = gennvm_unregister, | |
48add0f5 | 536 | |
ff0e498b JG |
537 | .get_blk_unlocked = gennvm_get_blk_unlocked, |
538 | .put_blk_unlocked = gennvm_put_blk_unlocked, | |
48add0f5 | 539 | |
ff0e498b JG |
540 | .get_blk = gennvm_get_blk, |
541 | .put_blk = gennvm_put_blk, | |
48add0f5 | 542 | |
ff0e498b JG |
543 | .submit_io = gennvm_submit_io, |
544 | .erase_blk = gennvm_erase_blk, | |
48add0f5 | 545 | |
04a8aa17 MB |
546 | .mark_blk = gennvm_mark_blk, |
547 | ||
ff0e498b | 548 | .get_lun = gennvm_get_lun, |
da1e2849 WT |
549 | .reserve_lun = gennvm_reserve_lun, |
550 | .release_lun = gennvm_release_lun, | |
ff0e498b | 551 | .lun_info_print = gennvm_lun_info_print, |
4c9dacb8 WT |
552 | |
553 | .get_area = gennvm_get_area, | |
554 | .put_area = gennvm_put_area, | |
555 | ||
48add0f5 MB |
556 | }; |
557 | ||
558 | static int __init gennvm_module_init(void) | |
559 | { | |
560 | return nvm_register_mgr(&gennvm); | |
561 | } | |
562 | ||
563 | static void gennvm_module_exit(void) | |
564 | { | |
565 | nvm_unregister_mgr(&gennvm); | |
566 | } | |
567 | ||
568 | module_init(gennvm_module_init); | |
569 | module_exit(gennvm_module_exit); | |
570 | MODULE_LICENSE("GPL v2"); | |
571 | MODULE_DESCRIPTION("Generic media manager for Open-Channel SSDs"); |