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mm/hmm.c: remove superfluous RCU protection around radix tree lookup
[linux/fpc-iii.git] / drivers / nvme / host / lightnvm.c
blob41279da799ed8b4fb1eb88d742d14b0f6631bce6
1 /*
2 * nvme-lightnvm.c - LightNVM NVMe device
3 *
4 * Copyright (C) 2014-2015 IT University of Copenhagen
5 * Initial release: Matias Bjorling <mb@lightnvm.io>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version
9 * 2 as published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; see the file COPYING. If not, write to
18 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
19 * USA.
20 *
21 */
22
23 #include "nvme.h"
24
25 #include <linux/nvme.h>
26 #include <linux/bitops.h>
27 #include <linux/lightnvm.h>
28 #include <linux/vmalloc.h>
29 #include <linux/sched/sysctl.h>
30 #include <uapi/linux/lightnvm.h>
31
32 enum nvme_nvm_admin_opcode {
33 nvme_nvm_admin_identity = 0xe2,
34 nvme_nvm_admin_get_bb_tbl = 0xf2,
35 nvme_nvm_admin_set_bb_tbl = 0xf1,
36 };
37
38 enum nvme_nvm_log_page {
39 NVME_NVM_LOG_REPORT_CHUNK = 0xca,
40 };
41
42 struct nvme_nvm_ph_rw {
43 __u8 opcode;
44 __u8 flags;
45 __u16 command_id;
46 __le32 nsid;
47 __u64 rsvd2;
48 __le64 metadata;
49 __le64 prp1;
50 __le64 prp2;
51 __le64 spba;
52 __le16 length;
53 __le16 control;
54 __le32 dsmgmt;
55 __le64 resv;
56 };
57
58 struct nvme_nvm_erase_blk {
59 __u8 opcode;
60 __u8 flags;
61 __u16 command_id;
62 __le32 nsid;
63 __u64 rsvd[2];
64 __le64 prp1;
65 __le64 prp2;
66 __le64 spba;
67 __le16 length;
68 __le16 control;
69 __le32 dsmgmt;
70 __le64 resv;
71 };
72
73 struct nvme_nvm_identity {
74 __u8 opcode;
75 __u8 flags;
76 __u16 command_id;
77 __le32 nsid;
78 __u64 rsvd[2];
79 __le64 prp1;
80 __le64 prp2;
81 __u32 rsvd11[6];
82 };
83
84 struct nvme_nvm_getbbtbl {
85 __u8 opcode;
86 __u8 flags;
87 __u16 command_id;
88 __le32 nsid;
89 __u64 rsvd[2];
90 __le64 prp1;
91 __le64 prp2;
92 __le64 spba;
93 __u32 rsvd4[4];
94 };
95
96 struct nvme_nvm_setbbtbl {
97 __u8 opcode;
98 __u8 flags;
99 __u16 command_id;
100 __le32 nsid;
101 __le64 rsvd[2];
102 __le64 prp1;
103 __le64 prp2;
104 __le64 spba;
105 __le16 nlb;
106 __u8 value;
107 __u8 rsvd3;
108 __u32 rsvd4[3];
109 };
110
111 struct nvme_nvm_command {
112 union {
113 struct nvme_common_command common;
114 struct nvme_nvm_ph_rw ph_rw;
115 struct nvme_nvm_erase_blk erase;
116 struct nvme_nvm_identity identity;
117 struct nvme_nvm_getbbtbl get_bb;
118 struct nvme_nvm_setbbtbl set_bb;
119 };
120 };
121
122 struct nvme_nvm_id12_grp {
123 __u8 mtype;
124 __u8 fmtype;
125 __le16 res16;
126 __u8 num_ch;
127 __u8 num_lun;
128 __u8 num_pln;
129 __u8 rsvd1;
130 __le16 num_chk;
131 __le16 num_pg;
132 __le16 fpg_sz;
133 __le16 csecs;
134 __le16 sos;
135 __le16 rsvd2;
136 __le32 trdt;
137 __le32 trdm;
138 __le32 tprt;
139 __le32 tprm;
140 __le32 tbet;
141 __le32 tbem;
142 __le32 mpos;
143 __le32 mccap;
144 __le16 cpar;
145 __u8 reserved[906];
146 } __packed;
147
148 struct nvme_nvm_id12_addrf {
149 __u8 ch_offset;
150 __u8 ch_len;
151 __u8 lun_offset;
152 __u8 lun_len;
153 __u8 pln_offset;
154 __u8 pln_len;
155 __u8 blk_offset;
156 __u8 blk_len;
157 __u8 pg_offset;
158 __u8 pg_len;
159 __u8 sec_offset;
160 __u8 sec_len;
161 __u8 res[4];
162 } __packed;
163
164 struct nvme_nvm_id12 {
165 __u8 ver_id;
166 __u8 vmnt;
167 __u8 cgrps;
168 __u8 res;
169 __le32 cap;
170 __le32 dom;
171 struct nvme_nvm_id12_addrf ppaf;
172 __u8 resv[228];
173 struct nvme_nvm_id12_grp grp;
174 __u8 resv2[2880];
175 } __packed;
176
177 struct nvme_nvm_bb_tbl {
178 __u8 tblid[4];
179 __le16 verid;
180 __le16 revid;
181 __le32 rvsd1;
182 __le32 tblks;
183 __le32 tfact;
184 __le32 tgrown;
185 __le32 tdresv;
186 __le32 thresv;
187 __le32 rsvd2[8];
188 __u8 blk[0];
189 };
190
191 struct nvme_nvm_id20_addrf {
192 __u8 grp_len;
193 __u8 pu_len;
194 __u8 chk_len;
195 __u8 lba_len;
196 __u8 resv[4];
197 };
198
199 struct nvme_nvm_id20 {
200 __u8 mjr;
201 __u8 mnr;
202 __u8 resv[6];
203
204 struct nvme_nvm_id20_addrf lbaf;
205
206 __le32 mccap;
207 __u8 resv2[12];
208
209 __u8 wit;
210 __u8 resv3[31];
211
212 /* Geometry */
213 __le16 num_grp;
214 __le16 num_pu;
215 __le32 num_chk;
216 __le32 clba;
217 __u8 resv4[52];
218
219 /* Write data requirements */
220 __le32 ws_min;
221 __le32 ws_opt;
222 __le32 mw_cunits;
223 __le32 maxoc;
224 __le32 maxocpu;
225 __u8 resv5[44];
226
227 /* Performance related metrics */
228 __le32 trdt;
229 __le32 trdm;
230 __le32 twrt;
231 __le32 twrm;
232 __le32 tcrst;
233 __le32 tcrsm;
234 __u8 resv6[40];
235
236 /* Reserved area */
237 __u8 resv7[2816];
238
239 /* Vendor specific */
240 __u8 vs[1024];
241 };
242
243 struct nvme_nvm_chk_meta {
244 __u8 state;
245 __u8 type;
246 __u8 wi;
247 __u8 rsvd[5];
248 __le64 slba;
249 __le64 cnlb;
250 __le64 wp;
251 };
252
253 /*
254 * Check we didn't inadvertently grow the command struct
255 */
256 static inline void _nvme_nvm_check_size(void)
257 {
258 BUILD_BUG_ON(sizeof(struct nvme_nvm_identity) != 64);
259 BUILD_BUG_ON(sizeof(struct nvme_nvm_ph_rw) != 64);
260 BUILD_BUG_ON(sizeof(struct nvme_nvm_erase_blk) != 64);
261 BUILD_BUG_ON(sizeof(struct nvme_nvm_getbbtbl) != 64);
262 BUILD_BUG_ON(sizeof(struct nvme_nvm_setbbtbl) != 64);
263 BUILD_BUG_ON(sizeof(struct nvme_nvm_id12_grp) != 960);
264 BUILD_BUG_ON(sizeof(struct nvme_nvm_id12_addrf) != 16);
265 BUILD_BUG_ON(sizeof(struct nvme_nvm_id12) != NVME_IDENTIFY_DATA_SIZE);
266 BUILD_BUG_ON(sizeof(struct nvme_nvm_bb_tbl) != 64);
267 BUILD_BUG_ON(sizeof(struct nvme_nvm_id20_addrf) != 8);
268 BUILD_BUG_ON(sizeof(struct nvme_nvm_id20) != NVME_IDENTIFY_DATA_SIZE);
269 BUILD_BUG_ON(sizeof(struct nvme_nvm_chk_meta) != 32);
270 BUILD_BUG_ON(sizeof(struct nvme_nvm_chk_meta) !=
271 sizeof(struct nvm_chk_meta));
272 }
273
274 static void nvme_nvm_set_addr_12(struct nvm_addrf_12 *dst,
275 struct nvme_nvm_id12_addrf *src)
276 {
277 dst->ch_len = src->ch_len;
278 dst->lun_len = src->lun_len;
279 dst->blk_len = src->blk_len;
280 dst->pg_len = src->pg_len;
281 dst->pln_len = src->pln_len;
282 dst->sec_len = src->sec_len;
283
284 dst->ch_offset = src->ch_offset;
285 dst->lun_offset = src->lun_offset;
286 dst->blk_offset = src->blk_offset;
287 dst->pg_offset = src->pg_offset;
288 dst->pln_offset = src->pln_offset;
289 dst->sec_offset = src->sec_offset;
290
291 dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset;
292 dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset;
293 dst->blk_mask = ((1ULL << dst->blk_len) - 1) << dst->blk_offset;
294 dst->pg_mask = ((1ULL << dst->pg_len) - 1) << dst->pg_offset;
295 dst->pln_mask = ((1ULL << dst->pln_len) - 1) << dst->pln_offset;
296 dst->sec_mask = ((1ULL << dst->sec_len) - 1) << dst->sec_offset;
297 }
298
299 static int nvme_nvm_setup_12(struct nvme_nvm_id12 *id,
300 struct nvm_geo *geo)
301 {
302 struct nvme_nvm_id12_grp *src;
303 int sec_per_pg, sec_per_pl, pg_per_blk;
304
305 if (id->cgrps != 1)
306 return -EINVAL;
307
308 src = &id->grp;
309
310 if (src->mtype != 0) {
311 pr_err("nvm: memory type not supported\n");
312 return -EINVAL;
313 }
314
315 /* 1.2 spec. only reports a single version id - unfold */
316 geo->major_ver_id = id->ver_id;
317 geo->minor_ver_id = 2;
318
319 /* Set compacted version for upper layers */
320 geo->version = NVM_OCSSD_SPEC_12;
321
322 geo->num_ch = src->num_ch;
323 geo->num_lun = src->num_lun;
324 geo->all_luns = geo->num_ch * geo->num_lun;
325
326 geo->num_chk = le16_to_cpu(src->num_chk);
327
328 geo->csecs = le16_to_cpu(src->csecs);
329 geo->sos = le16_to_cpu(src->sos);
330
331 pg_per_blk = le16_to_cpu(src->num_pg);
332 sec_per_pg = le16_to_cpu(src->fpg_sz) / geo->csecs;
333 sec_per_pl = sec_per_pg * src->num_pln;
334 geo->clba = sec_per_pl * pg_per_blk;
335
336 geo->all_chunks = geo->all_luns * geo->num_chk;
337 geo->total_secs = geo->clba * geo->all_chunks;
338
339 geo->ws_min = sec_per_pg;
340 geo->ws_opt = sec_per_pg;
341 geo->mw_cunits = geo->ws_opt << 3; /* default to MLC safe values */
342
343 /* Do not impose values for maximum number of open blocks as it is
344 * unspecified in 1.2. Users of 1.2 must be aware of this and eventually
345 * specify these values through a quirk if restrictions apply.
346 */
347 geo->maxoc = geo->all_luns * geo->num_chk;
348 geo->maxocpu = geo->num_chk;
349
350 geo->mccap = le32_to_cpu(src->mccap);
351
352 geo->trdt = le32_to_cpu(src->trdt);
353 geo->trdm = le32_to_cpu(src->trdm);
354 geo->tprt = le32_to_cpu(src->tprt);
355 geo->tprm = le32_to_cpu(src->tprm);
356 geo->tbet = le32_to_cpu(src->tbet);
357 geo->tbem = le32_to_cpu(src->tbem);
358
359 /* 1.2 compatibility */
360 geo->vmnt = id->vmnt;
361 geo->cap = le32_to_cpu(id->cap);
362 geo->dom = le32_to_cpu(id->dom);
363
364 geo->mtype = src->mtype;
365 geo->fmtype = src->fmtype;
366
367 geo->cpar = le16_to_cpu(src->cpar);
368 geo->mpos = le32_to_cpu(src->mpos);
369
370 geo->pln_mode = NVM_PLANE_SINGLE;
371
372 if (geo->mpos & 0x020202) {
373 geo->pln_mode = NVM_PLANE_DOUBLE;
374 geo->ws_opt <<= 1;
375 } else if (geo->mpos & 0x040404) {
376 geo->pln_mode = NVM_PLANE_QUAD;
377 geo->ws_opt <<= 2;
378 }
379
380 geo->num_pln = src->num_pln;
381 geo->num_pg = le16_to_cpu(src->num_pg);
382 geo->fpg_sz = le16_to_cpu(src->fpg_sz);
383
384 nvme_nvm_set_addr_12((struct nvm_addrf_12 *)&geo->addrf, &id->ppaf);
385
386 return 0;
387 }
388
389 static void nvme_nvm_set_addr_20(struct nvm_addrf *dst,
390 struct nvme_nvm_id20_addrf *src)
391 {
392 dst->ch_len = src->grp_len;
393 dst->lun_len = src->pu_len;
394 dst->chk_len = src->chk_len;
395 dst->sec_len = src->lba_len;
396
397 dst->sec_offset = 0;
398 dst->chk_offset = dst->sec_len;
399 dst->lun_offset = dst->chk_offset + dst->chk_len;
400 dst->ch_offset = dst->lun_offset + dst->lun_len;
401
402 dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset;
403 dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset;
404 dst->chk_mask = ((1ULL << dst->chk_len) - 1) << dst->chk_offset;
405 dst->sec_mask = ((1ULL << dst->sec_len) - 1) << dst->sec_offset;
406 }
407
408 static int nvme_nvm_setup_20(struct nvme_nvm_id20 *id,
409 struct nvm_geo *geo)
410 {
411 geo->major_ver_id = id->mjr;
412 geo->minor_ver_id = id->mnr;
413
414 /* Set compacted version for upper layers */
415 geo->version = NVM_OCSSD_SPEC_20;
416
417 if (!(geo->major_ver_id == 2 && geo->minor_ver_id == 0)) {
418 pr_err("nvm: OCSSD version not supported (v%d.%d)\n",
419 geo->major_ver_id, geo->minor_ver_id);
420 return -EINVAL;
421 }
422
423 geo->num_ch = le16_to_cpu(id->num_grp);
424 geo->num_lun = le16_to_cpu(id->num_pu);
425 geo->all_luns = geo->num_ch * geo->num_lun;
426
427 geo->num_chk = le32_to_cpu(id->num_chk);
428 geo->clba = le32_to_cpu(id->clba);
429
430 geo->all_chunks = geo->all_luns * geo->num_chk;
431 geo->total_secs = geo->clba * geo->all_chunks;
432
433 geo->ws_min = le32_to_cpu(id->ws_min);
434 geo->ws_opt = le32_to_cpu(id->ws_opt);
435 geo->mw_cunits = le32_to_cpu(id->mw_cunits);
436 geo->maxoc = le32_to_cpu(id->maxoc);
437 geo->maxocpu = le32_to_cpu(id->maxocpu);
438
439 geo->trdt = le32_to_cpu(id->trdt);
440 geo->trdm = le32_to_cpu(id->trdm);
441 geo->tprt = le32_to_cpu(id->twrt);
442 geo->tprm = le32_to_cpu(id->twrm);
443 geo->tbet = le32_to_cpu(id->tcrst);
444 geo->tbem = le32_to_cpu(id->tcrsm);
445
446 nvme_nvm_set_addr_20(&geo->addrf, &id->lbaf);
447
448 return 0;
449 }
450
451 static int nvme_nvm_identity(struct nvm_dev *nvmdev)
452 {
453 struct nvme_ns *ns = nvmdev->q->queuedata;
454 struct nvme_nvm_id12 *id;
455 struct nvme_nvm_command c = {};
456 int ret;
457
458 c.identity.opcode = nvme_nvm_admin_identity;
459 c.identity.nsid = cpu_to_le32(ns->head->ns_id);
460
461 id = kmalloc(sizeof(struct nvme_nvm_id12), GFP_KERNEL);
462 if (!id)
463 return -ENOMEM;
464
465 ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, (struct nvme_command *)&c,
466 id, sizeof(struct nvme_nvm_id12));
467 if (ret) {
468 ret = -EIO;
469 goto out;
470 }
471
472 /*
473 * The 1.2 and 2.0 specifications share the first byte in their geometry
474 * command to make it possible to know what version a device implements.
475 */
476 switch (id->ver_id) {
477 case 1:
478 ret = nvme_nvm_setup_12(id, &nvmdev->geo);
479 break;
480 case 2:
481 ret = nvme_nvm_setup_20((struct nvme_nvm_id20 *)id,
482 &nvmdev->geo);
483 break;
484 default:
485 dev_err(ns->ctrl->device, "OCSSD revision not supported (%d)\n",
486 id->ver_id);
487 ret = -EINVAL;
488 }
489
490 out:
491 kfree(id);
492 return ret;
493 }
494
495 static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa,
496 u8 *blks)
497 {
498 struct request_queue *q = nvmdev->q;
499 struct nvm_geo *geo = &nvmdev->geo;
500 struct nvme_ns *ns = q->queuedata;
501 struct nvme_ctrl *ctrl = ns->ctrl;
502 struct nvme_nvm_command c = {};
503 struct nvme_nvm_bb_tbl *bb_tbl;
504 int nr_blks = geo->num_chk * geo->num_pln;
505 int tblsz = sizeof(struct nvme_nvm_bb_tbl) + nr_blks;
506 int ret = 0;
507
508 c.get_bb.opcode = nvme_nvm_admin_get_bb_tbl;
509 c.get_bb.nsid = cpu_to_le32(ns->head->ns_id);
510 c.get_bb.spba = cpu_to_le64(ppa.ppa);
511
512 bb_tbl = kzalloc(tblsz, GFP_KERNEL);
513 if (!bb_tbl)
514 return -ENOMEM;
515
516 ret = nvme_submit_sync_cmd(ctrl->admin_q, (struct nvme_command *)&c,
517 bb_tbl, tblsz);
518 if (ret) {
519 dev_err(ctrl->device, "get bad block table failed (%d)\n", ret);
520 ret = -EIO;
521 goto out;
522 }
523
524 if (bb_tbl->tblid[0] != 'B' || bb_tbl->tblid[1] != 'B' ||
525 bb_tbl->tblid[2] != 'L' || bb_tbl->tblid[3] != 'T') {
526 dev_err(ctrl->device, "bbt format mismatch\n");
527 ret = -EINVAL;
528 goto out;
529 }
530
531 if (le16_to_cpu(bb_tbl->verid) != 1) {
532 ret = -EINVAL;
533 dev_err(ctrl->device, "bbt version not supported\n");
534 goto out;
535 }
536
537 if (le32_to_cpu(bb_tbl->tblks) != nr_blks) {
538 ret = -EINVAL;
539 dev_err(ctrl->device,
540 "bbt unsuspected blocks returned (%u!=%u)",
541 le32_to_cpu(bb_tbl->tblks), nr_blks);
542 goto out;
543 }
544
545 memcpy(blks, bb_tbl->blk, geo->num_chk * geo->num_pln);
546 out:
547 kfree(bb_tbl);
548 return ret;
549 }
550
551 static int nvme_nvm_set_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr *ppas,
552 int nr_ppas, int type)
553 {
554 struct nvme_ns *ns = nvmdev->q->queuedata;
555 struct nvme_nvm_command c = {};
556 int ret = 0;
557
558 c.set_bb.opcode = nvme_nvm_admin_set_bb_tbl;
559 c.set_bb.nsid = cpu_to_le32(ns->head->ns_id);
560 c.set_bb.spba = cpu_to_le64(ppas->ppa);
561 c.set_bb.nlb = cpu_to_le16(nr_ppas - 1);
562 c.set_bb.value = type;
563
564 ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, (struct nvme_command *)&c,
565 NULL, 0);
566 if (ret)
567 dev_err(ns->ctrl->device, "set bad block table failed (%d)\n",
568 ret);
569 return ret;
570 }
571
572 /*
573 * Expect the lba in device format
574 */
575 static int nvme_nvm_get_chk_meta(struct nvm_dev *ndev,
576 struct nvm_chk_meta *meta,
577 sector_t slba, int nchks)
578 {
579 struct nvm_geo *geo = &ndev->geo;
580 struct nvme_ns *ns = ndev->q->queuedata;
581 struct nvme_ctrl *ctrl = ns->ctrl;
582 struct nvme_nvm_chk_meta *dev_meta = (struct nvme_nvm_chk_meta *)meta;
583 struct ppa_addr ppa;
584 size_t left = nchks * sizeof(struct nvme_nvm_chk_meta);
585 size_t log_pos, offset, len;
586 int ret, i;
587
588 /* Normalize lba address space to obtain log offset */
589 ppa.ppa = slba;
590 ppa = dev_to_generic_addr(ndev, ppa);
591
592 log_pos = ppa.m.chk;
593 log_pos += ppa.m.pu * geo->num_chk;
594 log_pos += ppa.m.grp * geo->num_lun * geo->num_chk;
595
596 offset = log_pos * sizeof(struct nvme_nvm_chk_meta);
597
598 while (left) {
599 len = min_t(unsigned int, left, ctrl->max_hw_sectors << 9);
600
601 ret = nvme_get_log_ext(ctrl, ns, NVME_NVM_LOG_REPORT_CHUNK,
602 dev_meta, len, offset);
603 if (ret) {
604 dev_err(ctrl->device, "Get REPORT CHUNK log error\n");
605 break;
606 }
607
608 for (i = 0; i < len; i += sizeof(struct nvme_nvm_chk_meta)) {
609 meta->state = dev_meta->state;
610 meta->type = dev_meta->type;
611 meta->wi = dev_meta->wi;
612 meta->slba = le64_to_cpu(dev_meta->slba);
613 meta->cnlb = le64_to_cpu(dev_meta->cnlb);
614 meta->wp = le64_to_cpu(dev_meta->wp);
615
616 meta++;
617 dev_meta++;
618 }
619
620 offset += len;
621 left -= len;
622 }
623
624 return ret;
625 }
626
627 static inline void nvme_nvm_rqtocmd(struct nvm_rq *rqd, struct nvme_ns *ns,
628 struct nvme_nvm_command *c)
629 {
630 c->ph_rw.opcode = rqd->opcode;
631 c->ph_rw.nsid = cpu_to_le32(ns->head->ns_id);
632 c->ph_rw.spba = cpu_to_le64(rqd->ppa_addr.ppa);
633 c->ph_rw.metadata = cpu_to_le64(rqd->dma_meta_list);
634 c->ph_rw.control = cpu_to_le16(rqd->flags);
635 c->ph_rw.length = cpu_to_le16(rqd->nr_ppas - 1);
636 }
637
638 static void nvme_nvm_end_io(struct request *rq, blk_status_t status)
639 {
640 struct nvm_rq *rqd = rq->end_io_data;
641
642 rqd->ppa_status = le64_to_cpu(nvme_req(rq)->result.u64);
643 rqd->error = nvme_req(rq)->status;
644 nvm_end_io(rqd);
645
646 kfree(nvme_req(rq)->cmd);
647 blk_mq_free_request(rq);
648 }
649
650 static struct request *nvme_nvm_alloc_request(struct request_queue *q,
651 struct nvm_rq *rqd,
652 struct nvme_nvm_command *cmd)
653 {
654 struct nvme_ns *ns = q->queuedata;
655 struct request *rq;
656
657 nvme_nvm_rqtocmd(rqd, ns, cmd);
658
659 rq = nvme_alloc_request(q, (struct nvme_command *)cmd, 0, NVME_QID_ANY);
660 if (IS_ERR(rq))
661 return rq;
662
663 rq->cmd_flags &= ~REQ_FAILFAST_DRIVER;
664
665 if (rqd->bio) {
666 blk_init_request_from_bio(rq, rqd->bio);
667 } else {
668 rq->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, IOPRIO_NORM);
669 rq->__data_len = 0;
670 }
671
672 return rq;
673 }
674
675 static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
676 {
677 struct request_queue *q = dev->q;
678 struct nvme_nvm_command *cmd;
679 struct request *rq;
680
681 cmd = kzalloc(sizeof(struct nvme_nvm_command), GFP_KERNEL);
682 if (!cmd)
683 return -ENOMEM;
684
685 rq = nvme_nvm_alloc_request(q, rqd, cmd);
686 if (IS_ERR(rq)) {
687 kfree(cmd);
688 return PTR_ERR(rq);
689 }
690
691 rq->end_io_data = rqd;
692
693 blk_execute_rq_nowait(q, NULL, rq, 0, nvme_nvm_end_io);
694
695 return 0;
696 }
697
698 static int nvme_nvm_submit_io_sync(struct nvm_dev *dev, struct nvm_rq *rqd)
699 {
700 struct request_queue *q = dev->q;
701 struct request *rq;
702 struct nvme_nvm_command cmd;
703 int ret = 0;
704
705 memset(&cmd, 0, sizeof(struct nvme_nvm_command));
706
707 rq = nvme_nvm_alloc_request(q, rqd, &cmd);
708 if (IS_ERR(rq))
709 return PTR_ERR(rq);
710
711 /* I/Os can fail and the error is signaled through rqd. Callers must
712 * handle the error accordingly.
713 */
714 blk_execute_rq(q, NULL, rq, 0);
715 if (nvme_req(rq)->flags & NVME_REQ_CANCELLED)
716 ret = -EINTR;
717
718 rqd->ppa_status = le64_to_cpu(nvme_req(rq)->result.u64);
719 rqd->error = nvme_req(rq)->status;
720
721 blk_mq_free_request(rq);
722
723 return ret;
724 }
725
726 static void *nvme_nvm_create_dma_pool(struct nvm_dev *nvmdev, char *name)
727 {
728 struct nvme_ns *ns = nvmdev->q->queuedata;
729
730 return dma_pool_create(name, ns->ctrl->dev, PAGE_SIZE, PAGE_SIZE, 0);
731 }
732
733 static void nvme_nvm_destroy_dma_pool(void *pool)
734 {
735 struct dma_pool *dma_pool = pool;
736
737 dma_pool_destroy(dma_pool);
738 }
739
740 static void *nvme_nvm_dev_dma_alloc(struct nvm_dev *dev, void *pool,
741 gfp_t mem_flags, dma_addr_t *dma_handler)
742 {
743 return dma_pool_alloc(pool, mem_flags, dma_handler);
744 }
745
746 static void nvme_nvm_dev_dma_free(void *pool, void *addr,
747 dma_addr_t dma_handler)
748 {
749 dma_pool_free(pool, addr, dma_handler);
750 }
751
752 static struct nvm_dev_ops nvme_nvm_dev_ops = {
753 .identity = nvme_nvm_identity,
754
755 .get_bb_tbl = nvme_nvm_get_bb_tbl,
756 .set_bb_tbl = nvme_nvm_set_bb_tbl,
757
758 .get_chk_meta = nvme_nvm_get_chk_meta,
759
760 .submit_io = nvme_nvm_submit_io,
761 .submit_io_sync = nvme_nvm_submit_io_sync,
762
763 .create_dma_pool = nvme_nvm_create_dma_pool,
764 .destroy_dma_pool = nvme_nvm_destroy_dma_pool,
765 .dev_dma_alloc = nvme_nvm_dev_dma_alloc,
766 .dev_dma_free = nvme_nvm_dev_dma_free,
767 };
768
769 static int nvme_nvm_submit_user_cmd(struct request_queue *q,
770 struct nvme_ns *ns,
771 struct nvme_nvm_command *vcmd,
772 void __user *ubuf, unsigned int bufflen,
773 void __user *meta_buf, unsigned int meta_len,
774 void __user *ppa_buf, unsigned int ppa_len,
775 u32 *result, u64 *status, unsigned int timeout)
776 {
777 bool write = nvme_is_write((struct nvme_command *)vcmd);
778 struct nvm_dev *dev = ns->ndev;
779 struct gendisk *disk = ns->disk;
780 struct request *rq;
781 struct bio *bio = NULL;
782 __le64 *ppa_list = NULL;
783 dma_addr_t ppa_dma;
784 __le64 *metadata = NULL;
785 dma_addr_t metadata_dma;
786 DECLARE_COMPLETION_ONSTACK(wait);
787 int ret = 0;
788
789 rq = nvme_alloc_request(q, (struct nvme_command *)vcmd, 0,
790 NVME_QID_ANY);
791 if (IS_ERR(rq)) {
792 ret = -ENOMEM;
793 goto err_cmd;
794 }
795
796 rq->timeout = timeout ? timeout : ADMIN_TIMEOUT;
797
798 if (ppa_buf && ppa_len) {
799 ppa_list = dma_pool_alloc(dev->dma_pool, GFP_KERNEL, &ppa_dma);
800 if (!ppa_list) {
801 ret = -ENOMEM;
802 goto err_rq;
803 }
804 if (copy_from_user(ppa_list, (void __user *)ppa_buf,
805 sizeof(u64) * (ppa_len + 1))) {
806 ret = -EFAULT;
807 goto err_ppa;
808 }
809 vcmd->ph_rw.spba = cpu_to_le64(ppa_dma);
810 } else {
811 vcmd->ph_rw.spba = cpu_to_le64((uintptr_t)ppa_buf);
812 }
813
814 if (ubuf && bufflen) {
815 ret = blk_rq_map_user(q, rq, NULL, ubuf, bufflen, GFP_KERNEL);
816 if (ret)
817 goto err_ppa;
818 bio = rq->bio;
819
820 if (meta_buf && meta_len) {
821 metadata = dma_pool_alloc(dev->dma_pool, GFP_KERNEL,
822 &metadata_dma);
823 if (!metadata) {
824 ret = -ENOMEM;
825 goto err_map;
826 }
827
828 if (write) {
829 if (copy_from_user(metadata,
830 (void __user *)meta_buf,
831 meta_len)) {
832 ret = -EFAULT;
833 goto err_meta;
834 }
835 }
836 vcmd->ph_rw.metadata = cpu_to_le64(metadata_dma);
837 }
838
839 bio->bi_disk = disk;
840 }
841
842 blk_execute_rq(q, NULL, rq, 0);
843
844 if (nvme_req(rq)->flags & NVME_REQ_CANCELLED)
845 ret = -EINTR;
846 else if (nvme_req(rq)->status & 0x7ff)
847 ret = -EIO;
848 if (result)
849 *result = nvme_req(rq)->status & 0x7ff;
850 if (status)
851 *status = le64_to_cpu(nvme_req(rq)->result.u64);
852
853 if (metadata && !ret && !write) {
854 if (copy_to_user(meta_buf, (void *)metadata, meta_len))
855 ret = -EFAULT;
856 }
857 err_meta:
858 if (meta_buf && meta_len)
859 dma_pool_free(dev->dma_pool, metadata, metadata_dma);
860 err_map:
861 if (bio)
862 blk_rq_unmap_user(bio);
863 err_ppa:
864 if (ppa_buf && ppa_len)
865 dma_pool_free(dev->dma_pool, ppa_list, ppa_dma);
866 err_rq:
867 blk_mq_free_request(rq);
868 err_cmd:
869 return ret;
870 }
871
872 static int nvme_nvm_submit_vio(struct nvme_ns *ns,
873 struct nvm_user_vio __user *uvio)
874 {
875 struct nvm_user_vio vio;
876 struct nvme_nvm_command c;
877 unsigned int length;
878 int ret;
879
880 if (copy_from_user(&vio, uvio, sizeof(vio)))
881 return -EFAULT;
882 if (vio.flags)
883 return -EINVAL;
884
885 memset(&c, 0, sizeof(c));
886 c.ph_rw.opcode = vio.opcode;
887 c.ph_rw.nsid = cpu_to_le32(ns->head->ns_id);
888 c.ph_rw.control = cpu_to_le16(vio.control);
889 c.ph_rw.length = cpu_to_le16(vio.nppas);
890
891 length = (vio.nppas + 1) << ns->lba_shift;
892
893 ret = nvme_nvm_submit_user_cmd(ns->queue, ns, &c,
894 (void __user *)(uintptr_t)vio.addr, length,
895 (void __user *)(uintptr_t)vio.metadata,
896 vio.metadata_len,
897 (void __user *)(uintptr_t)vio.ppa_list, vio.nppas,
898 &vio.result, &vio.status, 0);
899
900 if (ret && copy_to_user(uvio, &vio, sizeof(vio)))
901 return -EFAULT;
902
903 return ret;
904 }
905
906 static int nvme_nvm_user_vcmd(struct nvme_ns *ns, int admin,
907 struct nvm_passthru_vio __user *uvcmd)
908 {
909 struct nvm_passthru_vio vcmd;
910 struct nvme_nvm_command c;
911 struct request_queue *q;
912 unsigned int timeout = 0;
913 int ret;
914
915 if (copy_from_user(&vcmd, uvcmd, sizeof(vcmd)))
916 return -EFAULT;
917 if ((vcmd.opcode != 0xF2) && (!capable(CAP_SYS_ADMIN)))
918 return -EACCES;
919 if (vcmd.flags)
920 return -EINVAL;
921
922 memset(&c, 0, sizeof(c));
923 c.common.opcode = vcmd.opcode;
924 c.common.nsid = cpu_to_le32(ns->head->ns_id);
925 c.common.cdw2[0] = cpu_to_le32(vcmd.cdw2);
926 c.common.cdw2[1] = cpu_to_le32(vcmd.cdw3);
927 /* cdw11-12 */
928 c.ph_rw.length = cpu_to_le16(vcmd.nppas);
929 c.ph_rw.control = cpu_to_le16(vcmd.control);
930 c.common.cdw10[3] = cpu_to_le32(vcmd.cdw13);
931 c.common.cdw10[4] = cpu_to_le32(vcmd.cdw14);
932 c.common.cdw10[5] = cpu_to_le32(vcmd.cdw15);
933
934 if (vcmd.timeout_ms)
935 timeout = msecs_to_jiffies(vcmd.timeout_ms);
936
937 q = admin ? ns->ctrl->admin_q : ns->queue;
938
939 ret = nvme_nvm_submit_user_cmd(q, ns,
940 (struct nvme_nvm_command *)&c,
941 (void __user *)(uintptr_t)vcmd.addr, vcmd.data_len,
942 (void __user *)(uintptr_t)vcmd.metadata,
943 vcmd.metadata_len,
944 (void __user *)(uintptr_t)vcmd.ppa_list, vcmd.nppas,
945 &vcmd.result, &vcmd.status, timeout);
946
947 if (ret && copy_to_user(uvcmd, &vcmd, sizeof(vcmd)))
948 return -EFAULT;
949
950 return ret;
951 }
952
953 int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg)
954 {
955 switch (cmd) {
956 case NVME_NVM_IOCTL_ADMIN_VIO:
957 return nvme_nvm_user_vcmd(ns, 1, (void __user *)arg);
958 case NVME_NVM_IOCTL_IO_VIO:
959 return nvme_nvm_user_vcmd(ns, 0, (void __user *)arg);
960 case NVME_NVM_IOCTL_SUBMIT_VIO:
961 return nvme_nvm_submit_vio(ns, (void __user *)arg);
962 default:
963 return -ENOTTY;
964 }
965 }
966
967 void nvme_nvm_update_nvm_info(struct nvme_ns *ns)
968 {
969 struct nvm_dev *ndev = ns->ndev;
970 struct nvm_geo *geo = &ndev->geo;
971
972 geo->csecs = 1 << ns->lba_shift;
973 geo->sos = ns->ms;
974 }
975
976 int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node)
977 {
978 struct request_queue *q = ns->queue;
979 struct nvm_dev *dev;
980
981 _nvme_nvm_check_size();
982
983 dev = nvm_alloc_dev(node);
984 if (!dev)
985 return -ENOMEM;
986
987 dev->q = q;
988 memcpy(dev->name, disk_name, DISK_NAME_LEN);
989 dev->ops = &nvme_nvm_dev_ops;
990 dev->private_data = ns;
991 ns->ndev = dev;
992
993 return nvm_register(dev);
994 }
995
996 void nvme_nvm_unregister(struct nvme_ns *ns)
997 {
998 nvm_unregister(ns->ndev);
999 }
1000
1001 static ssize_t nvm_dev_attr_show(struct device *dev,
1002 struct device_attribute *dattr, char *page)
1003 {
1004 struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
1005 struct nvm_dev *ndev = ns->ndev;
1006 struct nvm_geo *geo = &ndev->geo;
1007 struct attribute *attr;
1008
1009 if (!ndev)
1010 return 0;
1011
1012 attr = &dattr->attr;
1013
1014 if (strcmp(attr->name, "version") == 0) {
1015 if (geo->major_ver_id == 1)
1016 return scnprintf(page, PAGE_SIZE, "%u\n",
1017 geo->major_ver_id);
1018 else
1019 return scnprintf(page, PAGE_SIZE, "%u.%u\n",
1020 geo->major_ver_id,
1021 geo->minor_ver_id);
1022 } else if (strcmp(attr->name, "capabilities") == 0) {
1023 return scnprintf(page, PAGE_SIZE, "%u\n", geo->cap);
1024 } else if (strcmp(attr->name, "read_typ") == 0) {
1025 return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdt);
1026 } else if (strcmp(attr->name, "read_max") == 0) {
1027 return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdm);
1028 } else {
1029 return scnprintf(page,
1030 PAGE_SIZE,
1031 "Unhandled attr(%s) in `%s`\n",
1032 attr->name, __func__);
1033 }
1034 }
1035
1036 static ssize_t nvm_dev_attr_show_ppaf(struct nvm_addrf_12 *ppaf, char *page)
1037 {
1038 return scnprintf(page, PAGE_SIZE,
1039 "0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
1040 ppaf->ch_offset, ppaf->ch_len,
1041 ppaf->lun_offset, ppaf->lun_len,
1042 ppaf->pln_offset, ppaf->pln_len,
1043 ppaf->blk_offset, ppaf->blk_len,
1044 ppaf->pg_offset, ppaf->pg_len,
1045 ppaf->sec_offset, ppaf->sec_len);
1046 }
1047
1048 static ssize_t nvm_dev_attr_show_12(struct device *dev,
1049 struct device_attribute *dattr, char *page)
1050 {
1051 struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
1052 struct nvm_dev *ndev = ns->ndev;
1053 struct nvm_geo *geo = &ndev->geo;
1054 struct attribute *attr;
1055
1056 if (!ndev)
1057 return 0;
1058
1059 attr = &dattr->attr;
1060
1061 if (strcmp(attr->name, "vendor_opcode") == 0) {
1062 return scnprintf(page, PAGE_SIZE, "%u\n", geo->vmnt);
1063 } else if (strcmp(attr->name, "device_mode") == 0) {
1064 return scnprintf(page, PAGE_SIZE, "%u\n", geo->dom);
1065 /* kept for compatibility */
1066 } else if (strcmp(attr->name, "media_manager") == 0) {
1067 return scnprintf(page, PAGE_SIZE, "%s\n", "gennvm");
1068 } else if (strcmp(attr->name, "ppa_format") == 0) {
1069 return nvm_dev_attr_show_ppaf((void *)&geo->addrf, page);
1070 } else if (strcmp(attr->name, "media_type") == 0) { /* u8 */
1071 return scnprintf(page, PAGE_SIZE, "%u\n", geo->mtype);
1072 } else if (strcmp(attr->name, "flash_media_type") == 0) {
1073 return scnprintf(page, PAGE_SIZE, "%u\n", geo->fmtype);
1074 } else if (strcmp(attr->name, "num_channels") == 0) {
1075 return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_ch);
1076 } else if (strcmp(attr->name, "num_luns") == 0) {
1077 return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_lun);
1078 } else if (strcmp(attr->name, "num_planes") == 0) {
1079 return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pln);
1080 } else if (strcmp(attr->name, "num_blocks") == 0) { /* u16 */
1081 return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_chk);
1082 } else if (strcmp(attr->name, "num_pages") == 0) {
1083 return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pg);
1084 } else if (strcmp(attr->name, "page_size") == 0) {
1085 return scnprintf(page, PAGE_SIZE, "%u\n", geo->fpg_sz);
1086 } else if (strcmp(attr->name, "hw_sector_size") == 0) {
1087 return scnprintf(page, PAGE_SIZE, "%u\n", geo->csecs);
1088 } else if (strcmp(attr->name, "oob_sector_size") == 0) {/* u32 */
1089 return scnprintf(page, PAGE_SIZE, "%u\n", geo->sos);
1090 } else if (strcmp(attr->name, "prog_typ") == 0) {
1091 return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt);
1092 } else if (strcmp(attr->name, "prog_max") == 0) {
1093 return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm);
1094 } else if (strcmp(attr->name, "erase_typ") == 0) {
1095 return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet);
1096 } else if (strcmp(attr->name, "erase_max") == 0) {
1097 return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem);
1098 } else if (strcmp(attr->name, "multiplane_modes") == 0) {
1099 return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mpos);
1100 } else if (strcmp(attr->name, "media_capabilities") == 0) {
1101 return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mccap);
1102 } else if (strcmp(attr->name, "max_phys_secs") == 0) {
1103 return scnprintf(page, PAGE_SIZE, "%u\n", NVM_MAX_VLBA);
1104 } else {
1105 return scnprintf(page, PAGE_SIZE,
1106 "Unhandled attr(%s) in `%s`\n",
1107 attr->name, __func__);
1108 }
1109 }
1110
1111 static ssize_t nvm_dev_attr_show_20(struct device *dev,
1112 struct device_attribute *dattr, char *page)
1113 {
1114 struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
1115 struct nvm_dev *ndev = ns->ndev;
1116 struct nvm_geo *geo = &ndev->geo;
1117 struct attribute *attr;
1118
1119 if (!ndev)
1120 return 0;
1121
1122 attr = &dattr->attr;
1123
1124 if (strcmp(attr->name, "groups") == 0) {
1125 return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_ch);
1126 } else if (strcmp(attr->name, "punits") == 0) {
1127 return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_lun);
1128 } else if (strcmp(attr->name, "chunks") == 0) {
1129 return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_chk);
1130 } else if (strcmp(attr->name, "clba") == 0) {
1131 return scnprintf(page, PAGE_SIZE, "%u\n", geo->clba);
1132 } else if (strcmp(attr->name, "ws_min") == 0) {
1133 return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_min);
1134 } else if (strcmp(attr->name, "ws_opt") == 0) {
1135 return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_opt);
1136 } else if (strcmp(attr->name, "maxoc") == 0) {
1137 return scnprintf(page, PAGE_SIZE, "%u\n", geo->maxoc);
1138 } else if (strcmp(attr->name, "maxocpu") == 0) {
1139 return scnprintf(page, PAGE_SIZE, "%u\n", geo->maxocpu);
1140 } else if (strcmp(attr->name, "mw_cunits") == 0) {
1141 return scnprintf(page, PAGE_SIZE, "%u\n", geo->mw_cunits);
1142 } else if (strcmp(attr->name, "write_typ") == 0) {
1143 return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt);
1144 } else if (strcmp(attr->name, "write_max") == 0) {
1145 return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm);
1146 } else if (strcmp(attr->name, "reset_typ") == 0) {
1147 return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet);
1148 } else if (strcmp(attr->name, "reset_max") == 0) {
1149 return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem);
1150 } else {
1151 return scnprintf(page, PAGE_SIZE,
1152 "Unhandled attr(%s) in `%s`\n",
1153 attr->name, __func__);
1154 }
1155 }
1156
1157 #define NVM_DEV_ATTR_RO(_name) \
1158 DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show, NULL)
1159 #define NVM_DEV_ATTR_12_RO(_name) \
1160 DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show_12, NULL)
1161 #define NVM_DEV_ATTR_20_RO(_name) \
1162 DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show_20, NULL)
1163
1164 /* general attributes */
1165 static NVM_DEV_ATTR_RO(version);
1166 static NVM_DEV_ATTR_RO(capabilities);
1167
1168 static NVM_DEV_ATTR_RO(read_typ);
1169 static NVM_DEV_ATTR_RO(read_max);
1170
1171 /* 1.2 values */
1172 static NVM_DEV_ATTR_12_RO(vendor_opcode);
1173 static NVM_DEV_ATTR_12_RO(device_mode);
1174 static NVM_DEV_ATTR_12_RO(ppa_format);
1175 static NVM_DEV_ATTR_12_RO(media_manager);
1176 static NVM_DEV_ATTR_12_RO(media_type);
1177 static NVM_DEV_ATTR_12_RO(flash_media_type);
1178 static NVM_DEV_ATTR_12_RO(num_channels);
1179 static NVM_DEV_ATTR_12_RO(num_luns);
1180 static NVM_DEV_ATTR_12_RO(num_planes);
1181 static NVM_DEV_ATTR_12_RO(num_blocks);
1182 static NVM_DEV_ATTR_12_RO(num_pages);
1183 static NVM_DEV_ATTR_12_RO(page_size);
1184 static NVM_DEV_ATTR_12_RO(hw_sector_size);
1185 static NVM_DEV_ATTR_12_RO(oob_sector_size);
1186 static NVM_DEV_ATTR_12_RO(prog_typ);
1187 static NVM_DEV_ATTR_12_RO(prog_max);
1188 static NVM_DEV_ATTR_12_RO(erase_typ);
1189 static NVM_DEV_ATTR_12_RO(erase_max);
1190 static NVM_DEV_ATTR_12_RO(multiplane_modes);
1191 static NVM_DEV_ATTR_12_RO(media_capabilities);
1192 static NVM_DEV_ATTR_12_RO(max_phys_secs);
1193
1194 static struct attribute *nvm_dev_attrs_12[] = {
1195 &dev_attr_version.attr,
1196 &dev_attr_capabilities.attr,
1197
1198 &dev_attr_vendor_opcode.attr,
1199 &dev_attr_device_mode.attr,
1200 &dev_attr_media_manager.attr,
1201 &dev_attr_ppa_format.attr,
1202 &dev_attr_media_type.attr,
1203 &dev_attr_flash_media_type.attr,
1204 &dev_attr_num_channels.attr,
1205 &dev_attr_num_luns.attr,
1206 &dev_attr_num_planes.attr,
1207 &dev_attr_num_blocks.attr,
1208 &dev_attr_num_pages.attr,
1209 &dev_attr_page_size.attr,
1210 &dev_attr_hw_sector_size.attr,
1211 &dev_attr_oob_sector_size.attr,
1212 &dev_attr_read_typ.attr,
1213 &dev_attr_read_max.attr,
1214 &dev_attr_prog_typ.attr,
1215 &dev_attr_prog_max.attr,
1216 &dev_attr_erase_typ.attr,
1217 &dev_attr_erase_max.attr,
1218 &dev_attr_multiplane_modes.attr,
1219 &dev_attr_media_capabilities.attr,
1220 &dev_attr_max_phys_secs.attr,
1221
1222 NULL,
1223 };
1224
1225 static const struct attribute_group nvm_dev_attr_group_12 = {
1226 .name = "lightnvm",
1227 .attrs = nvm_dev_attrs_12,
1228 };
1229
1230 /* 2.0 values */
1231 static NVM_DEV_ATTR_20_RO(groups);
1232 static NVM_DEV_ATTR_20_RO(punits);
1233 static NVM_DEV_ATTR_20_RO(chunks);
1234 static NVM_DEV_ATTR_20_RO(clba);
1235 static NVM_DEV_ATTR_20_RO(ws_min);
1236 static NVM_DEV_ATTR_20_RO(ws_opt);
1237 static NVM_DEV_ATTR_20_RO(maxoc);
1238 static NVM_DEV_ATTR_20_RO(maxocpu);
1239 static NVM_DEV_ATTR_20_RO(mw_cunits);
1240 static NVM_DEV_ATTR_20_RO(write_typ);
1241 static NVM_DEV_ATTR_20_RO(write_max);
1242 static NVM_DEV_ATTR_20_RO(reset_typ);
1243 static NVM_DEV_ATTR_20_RO(reset_max);
1244
1245 static struct attribute *nvm_dev_attrs_20[] = {
1246 &dev_attr_version.attr,
1247 &dev_attr_capabilities.attr,
1248
1249 &dev_attr_groups.attr,
1250 &dev_attr_punits.attr,
1251 &dev_attr_chunks.attr,
1252 &dev_attr_clba.attr,
1253 &dev_attr_ws_min.attr,
1254 &dev_attr_ws_opt.attr,
1255 &dev_attr_maxoc.attr,
1256 &dev_attr_maxocpu.attr,
1257 &dev_attr_mw_cunits.attr,
1258
1259 &dev_attr_read_typ.attr,
1260 &dev_attr_read_max.attr,
1261 &dev_attr_write_typ.attr,
1262 &dev_attr_write_max.attr,
1263 &dev_attr_reset_typ.attr,
1264 &dev_attr_reset_max.attr,
1265
1266 NULL,
1267 };
1268
1269 static const struct attribute_group nvm_dev_attr_group_20 = {
1270 .name = "lightnvm",
1271 .attrs = nvm_dev_attrs_20,
1272 };
1273
1274 int nvme_nvm_register_sysfs(struct nvme_ns *ns)
1275 {
1276 struct nvm_dev *ndev = ns->ndev;
1277 struct nvm_geo *geo = &ndev->geo;
1278
1279 if (!ndev)
1280 return -EINVAL;
1281
1282 switch (geo->major_ver_id) {
1283 case 1:
1284 return sysfs_create_group(&disk_to_dev(ns->disk)->kobj,
1285 &nvm_dev_attr_group_12);
1286 case 2:
1287 return sysfs_create_group(&disk_to_dev(ns->disk)->kobj,
1288 &nvm_dev_attr_group_20);
1289 }
1290
1291 return -EINVAL;
1292 }
1293
1294 void nvme_nvm_unregister_sysfs(struct nvme_ns *ns)
1295 {
1296 struct nvm_dev *ndev = ns->ndev;
1297 struct nvm_geo *geo = &ndev->geo;
1298
1299 switch (geo->major_ver_id) {
1300 case 1:
1301 sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
1302 &nvm_dev_attr_group_12);
1303 break;
1304 case 2:
1305 sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
1306 &nvm_dev_attr_group_20);
1307 break;
1308 }
1309 }
Linux with added FPC-III support