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