lightnvm.c 33 KB

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