1/* 2 * Definitions for the NVM Express interface 3 * Copyright (c) 2011-2013, Intel Corporation. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms and conditions of the GNU General Public License, 7 * version 2, as published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program; if not, write to the Free Software Foundation, Inc., 16 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 17 */ 18 19#ifndef _UAPI_LINUX_NVME_H 20#define _UAPI_LINUX_NVME_H 21 22#include <linux/types.h> 23 24struct nvme_id_power_state { 25 __le16 max_power; /* centiwatts */ 26 __u8 rsvd2; 27 __u8 flags; 28 __le32 entry_lat; /* microseconds */ 29 __le32 exit_lat; /* microseconds */ 30 __u8 read_tput; 31 __u8 read_lat; 32 __u8 write_tput; 33 __u8 write_lat; 34 __u8 rsvd16[16]; 35}; 36 37enum { 38 NVME_PS_FLAGS_MAX_POWER_SCALE = 1 << 0, 39 NVME_PS_FLAGS_NON_OP_STATE = 1 << 1, 40}; 41 42struct nvme_id_ctrl { 43 __le16 vid; 44 __le16 ssvid; 45 char sn[20]; 46 char mn[40]; 47 char fr[8]; 48 __u8 rab; 49 __u8 ieee[3]; 50 __u8 mic; 51 __u8 mdts; 52 __u8 rsvd78[178]; 53 __le16 oacs; 54 __u8 acl; 55 __u8 aerl; 56 __u8 frmw; 57 __u8 lpa; 58 __u8 elpe; 59 __u8 npss; 60 __u8 rsvd264[248]; 61 __u8 sqes; 62 __u8 cqes; 63 __u8 rsvd514[2]; 64 __le32 nn; 65 __le16 oncs; 66 __le16 fuses; 67 __u8 fna; 68 __u8 vwc; 69 __le16 awun; 70 __le16 awupf; 71 __u8 rsvd530[1518]; 72 struct nvme_id_power_state psd[32]; 73 __u8 vs[1024]; 74}; 75 76enum { 77 NVME_CTRL_ONCS_COMPARE = 1 << 0, 78 NVME_CTRL_ONCS_WRITE_UNCORRECTABLE = 1 << 1, 79 NVME_CTRL_ONCS_DSM = 1 << 2, 80}; 81 82struct nvme_lbaf { 83 __le16 ms; 84 __u8 ds; 85 __u8 rp; 86}; 87 88struct nvme_id_ns { 89 __le64 nsze; 90 __le64 ncap; 91 __le64 nuse; 92 __u8 nsfeat; 93 __u8 nlbaf; 94 __u8 flbas; 95 __u8 mc; 96 __u8 dpc; 97 __u8 dps; 98 __u8 rsvd30[98]; 99 struct nvme_lbaf lbaf[16]; 100 __u8 rsvd192[192]; 101 __u8 vs[3712]; 102}; 103 104enum { 105 NVME_NS_FEAT_THIN = 1 << 0, 106 NVME_LBAF_RP_BEST = 0, 107 NVME_LBAF_RP_BETTER = 1, 108 NVME_LBAF_RP_GOOD = 2, 109 NVME_LBAF_RP_DEGRADED = 3, 110}; 111 112struct nvme_smart_log { 113 __u8 critical_warning; 114 __u8 temperature[2]; 115 __u8 avail_spare; 116 __u8 spare_thresh; 117 __u8 percent_used; 118 __u8 rsvd6[26]; 119 __u8 data_units_read[16]; 120 __u8 data_units_written[16]; 121 __u8 host_reads[16]; 122 __u8 host_writes[16]; 123 __u8 ctrl_busy_time[16]; 124 __u8 power_cycles[16]; 125 __u8 power_on_hours[16]; 126 __u8 unsafe_shutdowns[16]; 127 __u8 media_errors[16]; 128 __u8 num_err_log_entries[16]; 129 __u8 rsvd192[320]; 130}; 131 132enum { 133 NVME_SMART_CRIT_SPARE = 1 << 0, 134 NVME_SMART_CRIT_TEMPERATURE = 1 << 1, 135 NVME_SMART_CRIT_RELIABILITY = 1 << 2, 136 NVME_SMART_CRIT_MEDIA = 1 << 3, 137 NVME_SMART_CRIT_VOLATILE_MEMORY = 1 << 4, 138}; 139 140struct nvme_lba_range_type { 141 __u8 type; 142 __u8 attributes; 143 __u8 rsvd2[14]; 144 __u64 slba; 145 __u64 nlb; 146 __u8 guid[16]; 147 __u8 rsvd48[16]; 148}; 149 150enum { 151 NVME_LBART_TYPE_FS = 0x01, 152 NVME_LBART_TYPE_RAID = 0x02, 153 NVME_LBART_TYPE_CACHE = 0x03, 154 NVME_LBART_TYPE_SWAP = 0x04, 155 156 NVME_LBART_ATTRIB_TEMP = 1 << 0, 157 NVME_LBART_ATTRIB_HIDE = 1 << 1, 158}; 159 160/* I/O commands */ 161 162enum nvme_opcode { 163 nvme_cmd_flush = 0x00, 164 nvme_cmd_write = 0x01, 165 nvme_cmd_read = 0x02, 166 nvme_cmd_write_uncor = 0x04, 167 nvme_cmd_compare = 0x05, 168 nvme_cmd_dsm = 0x09, 169}; 170 171struct nvme_common_command { 172 __u8 opcode; 173 __u8 flags; 174 __u16 command_id; 175 __le32 nsid; 176 __le32 cdw2[2]; 177 __le64 metadata; 178 __le64 prp1; 179 __le64 prp2; 180 __le32 cdw10[6]; 181}; 182 183struct nvme_rw_command { 184 __u8 opcode; 185 __u8 flags; 186 __u16 command_id; 187 __le32 nsid; 188 __u64 rsvd2; 189 __le64 metadata; 190 __le64 prp1; 191 __le64 prp2; 192 __le64 slba; 193 __le16 length; 194 __le16 control; 195 __le32 dsmgmt; 196 __le32 reftag; 197 __le16 apptag; 198 __le16 appmask; 199}; 200 201enum { 202 NVME_RW_LR = 1 << 15, 203 NVME_RW_FUA = 1 << 14, 204 NVME_RW_DSM_FREQ_UNSPEC = 0, 205 NVME_RW_DSM_FREQ_TYPICAL = 1, 206 NVME_RW_DSM_FREQ_RARE = 2, 207 NVME_RW_DSM_FREQ_READS = 3, 208 NVME_RW_DSM_FREQ_WRITES = 4, 209 NVME_RW_DSM_FREQ_RW = 5, 210 NVME_RW_DSM_FREQ_ONCE = 6, 211 NVME_RW_DSM_FREQ_PREFETCH = 7, 212 NVME_RW_DSM_FREQ_TEMP = 8, 213 NVME_RW_DSM_LATENCY_NONE = 0 << 4, 214 NVME_RW_DSM_LATENCY_IDLE = 1 << 4, 215 NVME_RW_DSM_LATENCY_NORM = 2 << 4, 216 NVME_RW_DSM_LATENCY_LOW = 3 << 4, 217 NVME_RW_DSM_SEQ_REQ = 1 << 6, 218 NVME_RW_DSM_COMPRESSED = 1 << 7, 219}; 220 221struct nvme_dsm_cmd { 222 __u8 opcode; 223 __u8 flags; 224 __u16 command_id; 225 __le32 nsid; 226 __u64 rsvd2[2]; 227 __le64 prp1; 228 __le64 prp2; 229 __le32 nr; 230 __le32 attributes; 231 __u32 rsvd12[4]; 232}; 233 234enum { 235 NVME_DSMGMT_IDR = 1 << 0, 236 NVME_DSMGMT_IDW = 1 << 1, 237 NVME_DSMGMT_AD = 1 << 2, 238}; 239 240struct nvme_dsm_range { 241 __le32 cattr; 242 __le32 nlb; 243 __le64 slba; 244}; 245 246/* Admin commands */ 247 248enum nvme_admin_opcode { 249 nvme_admin_delete_sq = 0x00, 250 nvme_admin_create_sq = 0x01, 251 nvme_admin_get_log_page = 0x02, 252 nvme_admin_delete_cq = 0x04, 253 nvme_admin_create_cq = 0x05, 254 nvme_admin_identify = 0x06, 255 nvme_admin_abort_cmd = 0x08, 256 nvme_admin_set_features = 0x09, 257 nvme_admin_get_features = 0x0a, 258 nvme_admin_async_event = 0x0c, 259 nvme_admin_activate_fw = 0x10, 260 nvme_admin_download_fw = 0x11, 261 nvme_admin_format_nvm = 0x80, 262 nvme_admin_security_send = 0x81, 263 nvme_admin_security_recv = 0x82, 264}; 265 266enum { 267 NVME_QUEUE_PHYS_CONTIG = (1 << 0), 268 NVME_CQ_IRQ_ENABLED = (1 << 1), 269 NVME_SQ_PRIO_URGENT = (0 << 1), 270 NVME_SQ_PRIO_HIGH = (1 << 1), 271 NVME_SQ_PRIO_MEDIUM = (2 << 1), 272 NVME_SQ_PRIO_LOW = (3 << 1), 273 NVME_FEAT_ARBITRATION = 0x01, 274 NVME_FEAT_POWER_MGMT = 0x02, 275 NVME_FEAT_LBA_RANGE = 0x03, 276 NVME_FEAT_TEMP_THRESH = 0x04, 277 NVME_FEAT_ERR_RECOVERY = 0x05, 278 NVME_FEAT_VOLATILE_WC = 0x06, 279 NVME_FEAT_NUM_QUEUES = 0x07, 280 NVME_FEAT_IRQ_COALESCE = 0x08, 281 NVME_FEAT_IRQ_CONFIG = 0x09, 282 NVME_FEAT_WRITE_ATOMIC = 0x0a, 283 NVME_FEAT_ASYNC_EVENT = 0x0b, 284 NVME_FEAT_SW_PROGRESS = 0x0c, 285 NVME_FWACT_REPL = (0 << 3), 286 NVME_FWACT_REPL_ACTV = (1 << 3), 287 NVME_FWACT_ACTV = (2 << 3), 288}; 289 290struct nvme_identify { 291 __u8 opcode; 292 __u8 flags; 293 __u16 command_id; 294 __le32 nsid; 295 __u64 rsvd2[2]; 296 __le64 prp1; 297 __le64 prp2; 298 __le32 cns; 299 __u32 rsvd11[5]; 300}; 301 302struct nvme_features { 303 __u8 opcode; 304 __u8 flags; 305 __u16 command_id; 306 __le32 nsid; 307 __u64 rsvd2[2]; 308 __le64 prp1; 309 __le64 prp2; 310 __le32 fid; 311 __le32 dword11; 312 __u32 rsvd12[4]; 313}; 314 315struct nvme_create_cq { 316 __u8 opcode; 317 __u8 flags; 318 __u16 command_id; 319 __u32 rsvd1[5]; 320 __le64 prp1; 321 __u64 rsvd8; 322 __le16 cqid; 323 __le16 qsize; 324 __le16 cq_flags; 325 __le16 irq_vector; 326 __u32 rsvd12[4]; 327}; 328 329struct nvme_create_sq { 330 __u8 opcode; 331 __u8 flags; 332 __u16 command_id; 333 __u32 rsvd1[5]; 334 __le64 prp1; 335 __u64 rsvd8; 336 __le16 sqid; 337 __le16 qsize; 338 __le16 sq_flags; 339 __le16 cqid; 340 __u32 rsvd12[4]; 341}; 342 343struct nvme_delete_queue { 344 __u8 opcode; 345 __u8 flags; 346 __u16 command_id; 347 __u32 rsvd1[9]; 348 __le16 qid; 349 __u16 rsvd10; 350 __u32 rsvd11[5]; 351}; 352 353struct nvme_abort_cmd { 354 __u8 opcode; 355 __u8 flags; 356 __u16 command_id; 357 __u32 rsvd1[9]; 358 __le16 sqid; 359 __u16 cid; 360 __u32 rsvd11[5]; 361}; 362 363struct nvme_download_firmware { 364 __u8 opcode; 365 __u8 flags; 366 __u16 command_id; 367 __u32 rsvd1[5]; 368 __le64 prp1; 369 __le64 prp2; 370 __le32 numd; 371 __le32 offset; 372 __u32 rsvd12[4]; 373}; 374 375struct nvme_format_cmd { 376 __u8 opcode; 377 __u8 flags; 378 __u16 command_id; 379 __le32 nsid; 380 __u64 rsvd2[4]; 381 __le32 cdw10; 382 __u32 rsvd11[5]; 383}; 384 385struct nvme_command { 386 union { 387 struct nvme_common_command common; 388 struct nvme_rw_command rw; 389 struct nvme_identify identify; 390 struct nvme_features features; 391 struct nvme_create_cq create_cq; 392 struct nvme_create_sq create_sq; 393 struct nvme_delete_queue delete_queue; 394 struct nvme_download_firmware dlfw; 395 struct nvme_format_cmd format; 396 struct nvme_dsm_cmd dsm; 397 struct nvme_abort_cmd abort; 398 }; 399}; 400 401enum { 402 NVME_SC_SUCCESS = 0x0, 403 NVME_SC_INVALID_OPCODE = 0x1, 404 NVME_SC_INVALID_FIELD = 0x2, 405 NVME_SC_CMDID_CONFLICT = 0x3, 406 NVME_SC_DATA_XFER_ERROR = 0x4, 407 NVME_SC_POWER_LOSS = 0x5, 408 NVME_SC_INTERNAL = 0x6, 409 NVME_SC_ABORT_REQ = 0x7, 410 NVME_SC_ABORT_QUEUE = 0x8, 411 NVME_SC_FUSED_FAIL = 0x9, 412 NVME_SC_FUSED_MISSING = 0xa, 413 NVME_SC_INVALID_NS = 0xb, 414 NVME_SC_CMD_SEQ_ERROR = 0xc, 415 NVME_SC_LBA_RANGE = 0x80, 416 NVME_SC_CAP_EXCEEDED = 0x81, 417 NVME_SC_NS_NOT_READY = 0x82, 418 NVME_SC_CQ_INVALID = 0x100, 419 NVME_SC_QID_INVALID = 0x101, 420 NVME_SC_QUEUE_SIZE = 0x102, 421 NVME_SC_ABORT_LIMIT = 0x103, 422 NVME_SC_ABORT_MISSING = 0x104, 423 NVME_SC_ASYNC_LIMIT = 0x105, 424 NVME_SC_FIRMWARE_SLOT = 0x106, 425 NVME_SC_FIRMWARE_IMAGE = 0x107, 426 NVME_SC_INVALID_VECTOR = 0x108, 427 NVME_SC_INVALID_LOG_PAGE = 0x109, 428 NVME_SC_INVALID_FORMAT = 0x10a, 429 NVME_SC_BAD_ATTRIBUTES = 0x180, 430 NVME_SC_WRITE_FAULT = 0x280, 431 NVME_SC_READ_ERROR = 0x281, 432 NVME_SC_GUARD_CHECK = 0x282, 433 NVME_SC_APPTAG_CHECK = 0x283, 434 NVME_SC_REFTAG_CHECK = 0x284, 435 NVME_SC_COMPARE_FAILED = 0x285, 436 NVME_SC_ACCESS_DENIED = 0x286, 437}; 438 439struct nvme_completion { 440 __le32 result; /* Used by admin commands to return data */ 441 __u32 rsvd; 442 __le16 sq_head; /* how much of this queue may be reclaimed */ 443 __le16 sq_id; /* submission queue that generated this entry */ 444 __u16 command_id; /* of the command which completed */ 445 __le16 status; /* did the command fail, and if so, why? */ 446}; 447 448struct nvme_user_io { 449 __u8 opcode; 450 __u8 flags; 451 __u16 control; 452 __u16 nblocks; 453 __u16 rsvd; 454 __u64 metadata; 455 __u64 addr; 456 __u64 slba; 457 __u32 dsmgmt; 458 __u32 reftag; 459 __u16 apptag; 460 __u16 appmask; 461}; 462 463struct nvme_admin_cmd { 464 __u8 opcode; 465 __u8 flags; 466 __u16 rsvd1; 467 __u32 nsid; 468 __u32 cdw2; 469 __u32 cdw3; 470 __u64 metadata; 471 __u64 addr; 472 __u32 metadata_len; 473 __u32 data_len; 474 __u32 cdw10; 475 __u32 cdw11; 476 __u32 cdw12; 477 __u32 cdw13; 478 __u32 cdw14; 479 __u32 cdw15; 480 __u32 timeout_ms; 481 __u32 result; 482}; 483 484#define NVME_IOCTL_ID _IO('N', 0x40) 485#define NVME_IOCTL_ADMIN_CMD _IOWR('N', 0x41, struct nvme_admin_cmd) 486#define NVME_IOCTL_SUBMIT_IO _IOW('N', 0x42, struct nvme_user_io) 487 488#endif /* _UAPI_LINUX_NVME_H */ 489