include/linux/nvme.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Definitions for the NVM Express interface
   4  * Copyright (c) 2011-2014, Intel Corporation.
   5  */
   6
   7 #ifndef _LINUX_NVME_H
   8 #define _LINUX_NVME_H
   9
  10 #include <linux/bits.h>
  11 #include <linux/types.h>
  12 #include <linux/uuid.h>
  13
  14 /* NQN names in commands fields specified one size */
  15 #define NVMF_NQN_FIELD_LEN      256
  16
  17 /* However the max length of a qualified name is another size */
  18 #define NVMF_NQN_SIZE           223
  19
  20 #define NVMF_TRSVCID_SIZE       32
  21 #define NVMF_TRADDR_SIZE        256
  22 #define NVMF_TSAS_SIZE          256
  23
  24 #define NVME_DISC_SUBSYS_NAME   "nqn.2014-08.org.nvmexpress.discovery"
  25
  26 #define NVME_RDMA_IP_PORT       4420
  27
  28 #define NVME_NSID_ALL           0xffffffff
  29
  30 enum nvme_subsys_type {
  31         /* Referral to another discovery type target subsystem */
  32         NVME_NQN_DISC   = 1,
  33
  34         /* NVME type target subsystem */
  35         NVME_NQN_NVME   = 2,
  36
  37         /* Current discovery type target subsystem */
  38         NVME_NQN_CURR   = 3,
  39 };
  40
  41 enum nvme_ctrl_type {
  42         NVME_CTRL_IO    = 1,            /* I/O controller */
  43         NVME_CTRL_DISC  = 2,            /* Discovery controller */
  44         NVME_CTRL_ADMIN = 3,            /* Administrative controller */
  45 };
  46
  47 enum nvme_dctype {
  48         NVME_DCTYPE_NOT_REPORTED        = 0,
  49         NVME_DCTYPE_DDC                 = 1, /* Direct Discovery Controller */
  50         NVME_DCTYPE_CDC                 = 2, /* Central Discovery Controller */
  51 };
  52
  53 /* Address Family codes for Discovery Log Page entry ADRFAM field */
  54 enum {
  55         NVMF_ADDR_FAMILY_PCI    = 0,    /* PCIe */
  56         NVMF_ADDR_FAMILY_IP4    = 1,    /* IP4 */
  57         NVMF_ADDR_FAMILY_IP6    = 2,    /* IP6 */
  58         NVMF_ADDR_FAMILY_IB     = 3,    /* InfiniBand */
  59         NVMF_ADDR_FAMILY_FC     = 4,    /* Fibre Channel */
  60         NVMF_ADDR_FAMILY_LOOP   = 254,  /* Reserved for host usage */
  61         NVMF_ADDR_FAMILY_MAX,
  62 };
  63
  64 /* Transport Type codes for Discovery Log Page entry TRTYPE field */
  65 enum {
  66         NVMF_TRTYPE_RDMA        = 1,    /* RDMA */
  67         NVMF_TRTYPE_FC          = 2,    /* Fibre Channel */
  68         NVMF_TRTYPE_TCP         = 3,    /* TCP/IP */
  69         NVMF_TRTYPE_LOOP        = 254,  /* Reserved for host usage */
  70         NVMF_TRTYPE_MAX,
  71 };
  72
  73 /* Transport Requirements codes for Discovery Log Page entry TREQ field */
  74 enum {
  75         NVMF_TREQ_NOT_SPECIFIED = 0,            /* Not specified */
  76         NVMF_TREQ_REQUIRED      = 1,            /* Required */
  77         NVMF_TREQ_NOT_REQUIRED  = 2,            /* Not Required */
  78 #define NVME_TREQ_SECURE_CHANNEL_MASK \
  79         (NVMF_TREQ_REQUIRED | NVMF_TREQ_NOT_REQUIRED)
  80
  81         NVMF_TREQ_DISABLE_SQFLOW = (1 << 2),    /* Supports SQ flow control disable */
  82 };
  83
  84 /* RDMA QP Service Type codes for Discovery Log Page entry TSAS
  85  * RDMA_QPTYPE field
  86  */
  87 enum {
  88         NVMF_RDMA_QPTYPE_CONNECTED      = 1, /* Reliable Connected */
  89         NVMF_RDMA_QPTYPE_DATAGRAM       = 2, /* Reliable Datagram */
  90 };
  91
  92 /* RDMA QP Service Type codes for Discovery Log Page entry TSAS
  93  * RDMA_QPTYPE field
  94  */
  95 enum {
  96         NVMF_RDMA_PRTYPE_NOT_SPECIFIED  = 1, /* No Provider Specified */
  97         NVMF_RDMA_PRTYPE_IB             = 2, /* InfiniBand */
  98         NVMF_RDMA_PRTYPE_ROCE           = 3, /* InfiniBand RoCE */
  99         NVMF_RDMA_PRTYPE_ROCEV2         = 4, /* InfiniBand RoCEV2 */
 100         NVMF_RDMA_PRTYPE_IWARP          = 5, /* IWARP */
 101 };
 102
 103 /* RDMA Connection Management Service Type codes for Discovery Log Page
 104  * entry TSAS RDMA_CMS field
 105  */
 106 enum {
 107         NVMF_RDMA_CMS_RDMA_CM   = 1, /* Sockets based endpoint addressing */
 108 };
 109
 110 /* TSAS SECTYPE for TCP transport */
 111 enum {
 112         NVMF_TCP_SECTYPE_NONE = 0, /* No Security */
 113         NVMF_TCP_SECTYPE_TLS12 = 1, /* TLSv1.2, NVMe-oF 1.1 and NVMe-TCP 3.6.1.1 */
 114         NVMF_TCP_SECTYPE_TLS13 = 2, /* TLSv1.3, NVMe-oF 1.1 and NVMe-TCP 3.6.1.1 */
 115 };
 116
 117 #define NVME_AQ_DEPTH           32
 118 #define NVME_NR_AEN_COMMANDS    1
 119 #define NVME_AQ_BLK_MQ_DEPTH    (NVME_AQ_DEPTH - NVME_NR_AEN_COMMANDS)
 120
 121 /*
 122  * Subtract one to leave an empty queue entry for 'Full Queue' condition. See
 123  * NVM-Express 1.2 specification, section 4.1.2.
 124  */
 125 #define NVME_AQ_MQ_TAG_DEPTH    (NVME_AQ_BLK_MQ_DEPTH - 1)
 126
 127 enum {
 128         NVME_REG_CAP    = 0x0000,       /* Controller Capabilities */
 129         NVME_REG_VS     = 0x0008,       /* Version */
 130         NVME_REG_INTMS  = 0x000c,       /* Interrupt Mask Set */
 131         NVME_REG_INTMC  = 0x0010,       /* Interrupt Mask Clear */
 132         NVME_REG_CC     = 0x0014,       /* Controller Configuration */
 133         NVME_REG_CSTS   = 0x001c,       /* Controller Status */
 134         NVME_REG_NSSR   = 0x0020,       /* NVM Subsystem Reset */
 135         NVME_REG_AQA    = 0x0024,       /* Admin Queue Attributes */
 136         NVME_REG_ASQ    = 0x0028,       /* Admin SQ Base Address */
 137         NVME_REG_ACQ    = 0x0030,       /* Admin CQ Base Address */
 138         NVME_REG_CMBLOC = 0x0038,       /* Controller Memory Buffer Location */
 139         NVME_REG_CMBSZ  = 0x003c,       /* Controller Memory Buffer Size */
 140         NVME_REG_BPINFO = 0x0040,       /* Boot Partition Information */
 141         NVME_REG_BPRSEL = 0x0044,       /* Boot Partition Read Select */
 142         NVME_REG_BPMBL  = 0x0048,       /* Boot Partition Memory Buffer
 143                                          * Location
 144                                          */
 145         NVME_REG_CMBMSC = 0x0050,       /* Controller Memory Buffer Memory
 146                                          * Space Control
 147                                          */
 148         NVME_REG_CRTO   = 0x0068,       /* Controller Ready Timeouts */
 149         NVME_REG_PMRCAP = 0x0e00,       /* Persistent Memory Capabilities */
 150         NVME_REG_PMRCTL = 0x0e04,       /* Persistent Memory Region Control */
 151         NVME_REG_PMRSTS = 0x0e08,       /* Persistent Memory Region Status */
 152         NVME_REG_PMREBS = 0x0e0c,       /* Persistent Memory Region Elasticity
 153                                          * Buffer Size
 154                                          */
 155         NVME_REG_PMRSWTP = 0x0e10,      /* Persistent Memory Region Sustained
 156                                          * Write Throughput
 157                                          */
 158         NVME_REG_DBS    = 0x1000,       /* SQ 0 Tail Doorbell */
 159 };
 160
 161 #define NVME_CAP_MQES(cap)      ((cap) & 0xffff)
 162 #define NVME_CAP_TIMEOUT(cap)   (((cap) >> 24) & 0xff)
 163 #define NVME_CAP_STRIDE(cap)    (((cap) >> 32) & 0xf)
 164 #define NVME_CAP_NSSRC(cap)     (((cap) >> 36) & 0x1)
 165 #define NVME_CAP_CSS(cap)       (((cap) >> 37) & 0xff)
 166 #define NVME_CAP_MPSMIN(cap)    (((cap) >> 48) & 0xf)
 167 #define NVME_CAP_MPSMAX(cap)    (((cap) >> 52) & 0xf)
 168 #define NVME_CAP_CMBS(cap)      (((cap) >> 57) & 0x1)
 169
 170 #define NVME_CMB_BIR(cmbloc)    ((cmbloc) & 0x7)
 171 #define NVME_CMB_OFST(cmbloc)   (((cmbloc) >> 12) & 0xfffff)
 172
 173 #define NVME_CRTO_CRIMT(crto)   ((crto) >> 16)
 174 #define NVME_CRTO_CRWMT(crto)   ((crto) & 0xffff)
 175
 176 enum {
 177         NVME_CMBSZ_SQS          = 1 << 0,
 178         NVME_CMBSZ_CQS          = 1 << 1,
 179         NVME_CMBSZ_LISTS        = 1 << 2,
 180         NVME_CMBSZ_RDS          = 1 << 3,
 181         NVME_CMBSZ_WDS          = 1 << 4,
 182
 183         NVME_CMBSZ_SZ_SHIFT     = 12,
 184         NVME_CMBSZ_SZ_MASK      = 0xfffff,
 185
 186         NVME_CMBSZ_SZU_SHIFT    = 8,
 187         NVME_CMBSZ_SZU_MASK     = 0xf,
 188 };
 189
 190 /*
 191  * Submission and Completion Queue Entry Sizes for the NVM command set.
 192  * (In bytes and specified as a power of two (2^n)).
 193  */
 194 #define NVME_ADM_SQES       6
 195 #define NVME_NVM_IOSQES         6
 196 #define NVME_NVM_IOCQES         4
 197
 198 enum {
 199         NVME_CC_ENABLE          = 1 << 0,
 200         NVME_CC_EN_SHIFT        = 0,
 201         NVME_CC_CSS_SHIFT       = 4,
 202         NVME_CC_MPS_SHIFT       = 7,
 203         NVME_CC_AMS_SHIFT       = 11,
 204         NVME_CC_SHN_SHIFT       = 14,
 205         NVME_CC_IOSQES_SHIFT    = 16,
 206         NVME_CC_IOCQES_SHIFT    = 20,
 207         NVME_CC_CSS_NVM         = 0 << NVME_CC_CSS_SHIFT,
 208         NVME_CC_CSS_CSI         = 6 << NVME_CC_CSS_SHIFT,
 209         NVME_CC_CSS_MASK        = 7 << NVME_CC_CSS_SHIFT,
 210         NVME_CC_AMS_RR          = 0 << NVME_CC_AMS_SHIFT,
 211         NVME_CC_AMS_WRRU        = 1 << NVME_CC_AMS_SHIFT,
 212         NVME_CC_AMS_VS          = 7 << NVME_CC_AMS_SHIFT,
 213         NVME_CC_SHN_NONE        = 0 << NVME_CC_SHN_SHIFT,
 214         NVME_CC_SHN_NORMAL      = 1 << NVME_CC_SHN_SHIFT,
 215         NVME_CC_SHN_ABRUPT      = 2 << NVME_CC_SHN_SHIFT,
 216         NVME_CC_SHN_MASK        = 3 << NVME_CC_SHN_SHIFT,
 217         NVME_CC_IOSQES          = NVME_NVM_IOSQES << NVME_CC_IOSQES_SHIFT,
 218         NVME_CC_IOCQES          = NVME_NVM_IOCQES << NVME_CC_IOCQES_SHIFT,
 219         NVME_CC_CRIME           = 1 << 24,
 220 };
 221
 222 enum {
 223         NVME_CSTS_RDY           = 1 << 0,
 224         NVME_CSTS_CFS           = 1 << 1,
 225         NVME_CSTS_NSSRO         = 1 << 4,
 226         NVME_CSTS_PP            = 1 << 5,
 227         NVME_CSTS_SHST_NORMAL   = 0 << 2,
 228         NVME_CSTS_SHST_OCCUR    = 1 << 2,
 229         NVME_CSTS_SHST_CMPLT    = 2 << 2,
 230         NVME_CSTS_SHST_MASK     = 3 << 2,
 231 };
 232
 233 enum {
 234         NVME_CMBMSC_CRE         = 1 << 0,
 235         NVME_CMBMSC_CMSE        = 1 << 1,
 236 };
 237
 238 enum {
 239         NVME_CAP_CSS_NVM        = 1 << 0,
 240         NVME_CAP_CSS_CSI        = 1 << 6,
 241 };
 242
 243 enum {
 244         NVME_CAP_CRMS_CRWMS     = 1ULL << 59,
 245         NVME_CAP_CRMS_CRIMS     = 1ULL << 60,
 246 };
 247
 248 struct nvme_id_power_state {
 249         __le16                  max_power;      /* centiwatts */
 250         __u8                    rsvd2;
 251         __u8                    flags;
 252         __le32                  entry_lat;      /* microseconds */
 253         __le32                  exit_lat;       /* microseconds */
 254         __u8                    read_tput;
 255         __u8                    read_lat;
 256         __u8                    write_tput;
 257         __u8                    write_lat;
 258         __le16                  idle_power;
 259         __u8                    idle_scale;
 260         __u8                    rsvd19;
 261         __le16                  active_power;
 262         __u8                    active_work_scale;
 263         __u8                    rsvd23[9];
 264 };
 265
 266 enum {
 267         NVME_PS_FLAGS_MAX_POWER_SCALE   = 1 << 0,
 268         NVME_PS_FLAGS_NON_OP_STATE      = 1 << 1,
 269 };
 270
 271 enum nvme_ctrl_attr {
 272         NVME_CTRL_ATTR_HID_128_BIT      = (1 << 0),
 273         NVME_CTRL_ATTR_TBKAS            = (1 << 6),
 274         NVME_CTRL_ATTR_ELBAS            = (1 << 15),
 275 };
 276
 277 struct nvme_id_ctrl {
 278         __le16                  vid;
 279         __le16                  ssvid;
 280         char                    sn[20];
 281         char                    mn[40];
 282         char                    fr[8];
 283         __u8                    rab;
 284         __u8                    ieee[3];
 285         __u8                    cmic;
 286         __u8                    mdts;
 287         __le16                  cntlid;
 288         __le32                  ver;
 289         __le32                  rtd3r;
 290         __le32                  rtd3e;
 291         __le32                  oaes;
 292         __le32                  ctratt;
 293         __u8                    rsvd100[11];
 294         __u8                    cntrltype;
 295         __u8                    fguid[16];
 296         __le16                  crdt1;
 297         __le16                  crdt2;
 298         __le16                  crdt3;
 299         __u8                    rsvd134[122];
 300         __le16                  oacs;
 301         __u8                    acl;
 302         __u8                    aerl;
 303         __u8                    frmw;
 304         __u8                    lpa;
 305         __u8                    elpe;
 306         __u8                    npss;
 307         __u8                    avscc;
 308         __u8                    apsta;
 309         __le16                  wctemp;
 310         __le16                  cctemp;
 311         __le16                  mtfa;
 312         __le32                  hmpre;
 313         __le32                  hmmin;
 314         __u8                    tnvmcap[16];
 315         __u8                    unvmcap[16];
 316         __le32                  rpmbs;
 317         __le16                  edstt;
 318         __u8                    dsto;
 319         __u8                    fwug;
 320         __le16                  kas;
 321         __le16                  hctma;
 322         __le16                  mntmt;
 323         __le16                  mxtmt;
 324         __le32                  sanicap;
 325         __le32                  hmminds;
 326         __le16                  hmmaxd;
 327         __u8                    rsvd338[4];
 328         __u8                    anatt;
 329         __u8                    anacap;
 330         __le32                  anagrpmax;
 331         __le32                  nanagrpid;
 332         __u8                    rsvd352[160];
 333         __u8                    sqes;
 334         __u8                    cqes;
 335         __le16                  maxcmd;
 336         __le32                  nn;
 337         __le16                  oncs;
 338         __le16                  fuses;
 339         __u8                    fna;
 340         __u8                    vwc;
 341         __le16                  awun;
 342         __le16                  awupf;
 343         __u8                    nvscc;
 344         __u8                    nwpc;
 345         __le16                  acwu;
 346         __u8                    rsvd534[2];
 347         __le32                  sgls;
 348         __le32                  mnan;
 349         __u8                    rsvd544[224];
 350         char                    subnqn[256];
 351         __u8                    rsvd1024[768];
 352         __le32                  ioccsz;
 353         __le32                  iorcsz;
 354         __le16                  icdoff;
 355         __u8                    ctrattr;
 356         __u8                    msdbd;
 357         __u8                    rsvd1804[2];
 358         __u8                    dctype;
 359         __u8                    rsvd1807[241];
 360         struct nvme_id_power_state      psd[32];
 361         __u8                    vs[1024];
 362 };
 363
 364 enum {
 365         NVME_CTRL_CMIC_MULTI_PORT               = 1 << 0,
 366         NVME_CTRL_CMIC_MULTI_CTRL               = 1 << 1,
 367         NVME_CTRL_CMIC_ANA                      = 1 << 3,
 368         NVME_CTRL_ONCS_COMPARE                  = 1 << 0,
 369         NVME_CTRL_ONCS_WRITE_UNCORRECTABLE      = 1 << 1,
 370         NVME_CTRL_ONCS_DSM                      = 1 << 2,
 371         NVME_CTRL_ONCS_WRITE_ZEROES             = 1 << 3,
 372         NVME_CTRL_ONCS_RESERVATIONS             = 1 << 5,
 373         NVME_CTRL_ONCS_TIMESTAMP                = 1 << 6,
 374         NVME_CTRL_VWC_PRESENT                   = 1 << 0,
 375         NVME_CTRL_OACS_SEC_SUPP                 = 1 << 0,
 376         NVME_CTRL_OACS_NS_MNGT_SUPP             = 1 << 3,
 377         NVME_CTRL_OACS_DIRECTIVES               = 1 << 5,
 378         NVME_CTRL_OACS_DBBUF_SUPP               = 1 << 8,
 379         NVME_CTRL_LPA_CMD_EFFECTS_LOG           = 1 << 1,
 380         NVME_CTRL_CTRATT_128_ID                 = 1 << 0,
 381         NVME_CTRL_CTRATT_NON_OP_PSP             = 1 << 1,
 382         NVME_CTRL_CTRATT_NVM_SETS               = 1 << 2,
 383         NVME_CTRL_CTRATT_READ_RECV_LVLS         = 1 << 3,
 384         NVME_CTRL_CTRATT_ENDURANCE_GROUPS       = 1 << 4,
 385         NVME_CTRL_CTRATT_PREDICTABLE_LAT        = 1 << 5,
 386         NVME_CTRL_CTRATT_NAMESPACE_GRANULARITY  = 1 << 7,
 387         NVME_CTRL_CTRATT_UUID_LIST              = 1 << 9,
 388 };
 389
 390 struct nvme_lbaf {
 391         __le16                  ms;
 392         __u8                    ds;
 393         __u8                    rp;
 394 };
 395
 396 struct nvme_id_ns {
 397         __le64                  nsze;
 398         __le64                  ncap;
 399         __le64                  nuse;
 400         __u8                    nsfeat;
 401         __u8                    nlbaf;
 402         __u8                    flbas;
 403         __u8                    mc;
 404         __u8                    dpc;
 405         __u8                    dps;
 406         __u8                    nmic;
 407         __u8                    rescap;
 408         __u8                    fpi;
 409         __u8                    dlfeat;
 410         __le16                  nawun;
 411         __le16                  nawupf;
 412         __le16                  nacwu;
 413         __le16                  nabsn;
 414         __le16                  nabo;
 415         __le16                  nabspf;
 416         __le16                  noiob;
 417         __u8                    nvmcap[16];
 418         __le16                  npwg;
 419         __le16                  npwa;
 420         __le16                  npdg;
 421         __le16                  npda;
 422         __le16                  nows;
 423         __u8                    rsvd74[18];
 424         __le32                  anagrpid;
 425         __u8                    rsvd96[3];
 426         __u8                    nsattr;
 427         __le16                  nvmsetid;
 428         __le16                  endgid;
 429         __u8                    nguid[16];
 430         __u8                    eui64[8];
 431         struct nvme_lbaf        lbaf[64];
 432         __u8                    vs[3712];
 433 };
 434
 435 /* I/O Command Set Independent Identify Namespace Data Structure */
 436 struct nvme_id_ns_cs_indep {
 437         __u8                    nsfeat;
 438         __u8                    nmic;
 439         __u8                    rescap;
 440         __u8                    fpi;
 441         __le32                  anagrpid;
 442         __u8                    nsattr;
 443         __u8                    rsvd9;
 444         __le16                  nvmsetid;
 445         __le16                  endgid;
 446         __u8                    nstat;
 447         __u8                    rsvd15[4081];
 448 };
 449
 450 struct nvme_zns_lbafe {
 451         __le64                  zsze;
 452         __u8                    zdes;
 453         __u8                    rsvd9[7];
 454 };
 455
 456 struct nvme_id_ns_zns {
 457         __le16                  zoc;
 458         __le16                  ozcs;
 459         __le32                  mar;
 460         __le32                  mor;
 461         __le32                  rrl;
 462         __le32                  frl;
 463         __u8                    rsvd20[2796];
 464         struct nvme_zns_lbafe   lbafe[64];
 465         __u8                    vs[256];
 466 };
 467
 468 struct nvme_id_ctrl_zns {
 469         __u8    zasl;
 470         __u8    rsvd1[4095];
 471 };
 472
 473 struct nvme_id_ns_nvm {
 474         __le64  lbstm;
 475         __u8    pic;
 476         __u8    rsvd9[3];
 477         __le32  elbaf[64];
 478         __u8    rsvd268[3828];
 479 };
 480
 481 enum {
 482         NVME_ID_NS_NVM_STS_MASK         = 0x7f,
 483         NVME_ID_NS_NVM_GUARD_SHIFT      = 7,
 484         NVME_ID_NS_NVM_GUARD_MASK       = 0x3,
 485 };
 486
 487 static inline __u8 nvme_elbaf_sts(__u32 elbaf)
 488 {
 489         return elbaf & NVME_ID_NS_NVM_STS_MASK;
 490 }
 491
 492 static inline __u8 nvme_elbaf_guard_type(__u32 elbaf)
 493 {
 494         return (elbaf >> NVME_ID_NS_NVM_GUARD_SHIFT) & NVME_ID_NS_NVM_GUARD_MASK;
 495 }
 496
 497 struct nvme_id_ctrl_nvm {
 498         __u8    vsl;
 499         __u8    wzsl;
 500         __u8    wusl;
 501         __u8    dmrl;
 502         __le32  dmrsl;
 503         __le64  dmsl;
 504         __u8    rsvd16[4080];
 505 };
 506
 507 enum {
 508         NVME_ID_CNS_NS                  = 0x00,
 509         NVME_ID_CNS_CTRL                = 0x01,
 510         NVME_ID_CNS_NS_ACTIVE_LIST      = 0x02,
 511         NVME_ID_CNS_NS_DESC_LIST        = 0x03,
 512         NVME_ID_CNS_CS_NS               = 0x05,
 513         NVME_ID_CNS_CS_CTRL             = 0x06,
 514         NVME_ID_CNS_NS_CS_INDEP         = 0x08,
 515         NVME_ID_CNS_NS_PRESENT_LIST     = 0x10,
 516         NVME_ID_CNS_NS_PRESENT          = 0x11,
 517         NVME_ID_CNS_CTRL_NS_LIST        = 0x12,
 518         NVME_ID_CNS_CTRL_LIST           = 0x13,
 519         NVME_ID_CNS_SCNDRY_CTRL_LIST    = 0x15,
 520         NVME_ID_CNS_NS_GRANULARITY      = 0x16,
 521         NVME_ID_CNS_UUID_LIST           = 0x17,
 522 };
 523
 524 enum {
 525         NVME_CSI_NVM                    = 0,
 526         NVME_CSI_ZNS                    = 2,
 527 };
 528
 529 enum {
 530         NVME_DIR_IDENTIFY               = 0x00,
 531         NVME_DIR_STREAMS                = 0x01,
 532         NVME_DIR_SND_ID_OP_ENABLE       = 0x01,
 533         NVME_DIR_SND_ST_OP_REL_ID       = 0x01,
 534         NVME_DIR_SND_ST_OP_REL_RSC      = 0x02,
 535         NVME_DIR_RCV_ID_OP_PARAM        = 0x01,
 536         NVME_DIR_RCV_ST_OP_PARAM        = 0x01,
 537         NVME_DIR_RCV_ST_OP_STATUS       = 0x02,
 538         NVME_DIR_RCV_ST_OP_RESOURCE     = 0x03,
 539         NVME_DIR_ENDIR                  = 0x01,
 540 };
 541
 542 enum {
 543         NVME_NS_FEAT_THIN       = 1 << 0,
 544         NVME_NS_FEAT_ATOMICS    = 1 << 1,
 545         NVME_NS_FEAT_IO_OPT     = 1 << 4,
 546         NVME_NS_ATTR_RO         = 1 << 0,
 547         NVME_NS_FLBAS_LBA_MASK  = 0xf,
 548         NVME_NS_FLBAS_LBA_UMASK = 0x60,
 549         NVME_NS_FLBAS_LBA_SHIFT = 1,
 550         NVME_NS_FLBAS_META_EXT  = 0x10,
 551         NVME_NS_NMIC_SHARED     = 1 << 0,
 552         NVME_LBAF_RP_BEST       = 0,
 553         NVME_LBAF_RP_BETTER     = 1,
 554         NVME_LBAF_RP_GOOD       = 2,
 555         NVME_LBAF_RP_DEGRADED   = 3,
 556         NVME_NS_DPC_PI_LAST     = 1 << 4,
 557         NVME_NS_DPC_PI_FIRST    = 1 << 3,
 558         NVME_NS_DPC_PI_TYPE3    = 1 << 2,
 559         NVME_NS_DPC_PI_TYPE2    = 1 << 1,
 560         NVME_NS_DPC_PI_TYPE1    = 1 << 0,
 561         NVME_NS_DPS_PI_FIRST    = 1 << 3,
 562         NVME_NS_DPS_PI_MASK     = 0x7,
 563         NVME_NS_DPS_PI_TYPE1    = 1,
 564         NVME_NS_DPS_PI_TYPE2    = 2,
 565         NVME_NS_DPS_PI_TYPE3    = 3,
 566 };
 567
 568 enum {
 569         NVME_NSTAT_NRDY         = 1 << 0,
 570 };
 571
 572 enum {
 573         NVME_NVM_NS_16B_GUARD   = 0,
 574         NVME_NVM_NS_32B_GUARD   = 1,
 575         NVME_NVM_NS_64B_GUARD   = 2,
 576 };
 577
 578 static inline __u8 nvme_lbaf_index(__u8 flbas)
 579 {
 580         return (flbas & NVME_NS_FLBAS_LBA_MASK) |
 581                 ((flbas & NVME_NS_FLBAS_LBA_UMASK) >> NVME_NS_FLBAS_LBA_SHIFT);
 582 }
 583
 584 /* Identify Namespace Metadata Capabilities (MC): */
 585 enum {
 586         NVME_MC_EXTENDED_LBA    = (1 << 0),
 587         NVME_MC_METADATA_PTR    = (1 << 1),
 588 };
 589
 590 struct nvme_ns_id_desc {
 591         __u8 nidt;
 592         __u8 nidl;
 593         __le16 reserved;
 594 };
 595
 596 #define NVME_NIDT_EUI64_LEN     8
 597 #define NVME_NIDT_NGUID_LEN     16
 598 #define NVME_NIDT_UUID_LEN      16
 599 #define NVME_NIDT_CSI_LEN       1
 600
 601 enum {
 602         NVME_NIDT_EUI64         = 0x01,
 603         NVME_NIDT_NGUID         = 0x02,
 604         NVME_NIDT_UUID          = 0x03,
 605         NVME_NIDT_CSI           = 0x04,
 606 };
 607
 608 struct nvme_smart_log {
 609         __u8                    critical_warning;
 610         __u8                    temperature[2];
 611         __u8                    avail_spare;
 612         __u8                    spare_thresh;
 613         __u8                    percent_used;
 614         __u8                    endu_grp_crit_warn_sumry;
 615         __u8                    rsvd7[25];
 616         __u8                    data_units_read[16];
 617         __u8                    data_units_written[16];
 618         __u8                    host_reads[16];
 619         __u8                    host_writes[16];
 620         __u8                    ctrl_busy_time[16];
 621         __u8                    power_cycles[16];
 622         __u8                    power_on_hours[16];
 623         __u8                    unsafe_shutdowns[16];
 624         __u8                    media_errors[16];
 625         __u8                    num_err_log_entries[16];
 626         __le32                  warning_temp_time;
 627         __le32                  critical_comp_time;
 628         __le16                  temp_sensor[8];
 629         __le32                  thm_temp1_trans_count;
 630         __le32                  thm_temp2_trans_count;
 631         __le32                  thm_temp1_total_time;
 632         __le32                  thm_temp2_total_time;
 633         __u8                    rsvd232[280];
 634 };
 635
 636 struct nvme_fw_slot_info_log {
 637         __u8                    afi;
 638         __u8                    rsvd1[7];
 639         __le64                  frs[7];
 640         __u8                    rsvd64[448];
 641 };
 642
 643 enum {
 644         NVME_CMD_EFFECTS_CSUPP          = 1 << 0,
 645         NVME_CMD_EFFECTS_LBCC           = 1 << 1,
 646         NVME_CMD_EFFECTS_NCC            = 1 << 2,
 647         NVME_CMD_EFFECTS_NIC            = 1 << 3,
 648         NVME_CMD_EFFECTS_CCC            = 1 << 4,
 649         NVME_CMD_EFFECTS_CSE_MASK       = GENMASK(18, 16),
 650         NVME_CMD_EFFECTS_UUID_SEL       = 1 << 19,
 651         NVME_CMD_EFFECTS_SCOPE_MASK     = GENMASK(31, 20),
 652 };
 653
 654 struct nvme_effects_log {
 655         __le32 acs[256];
 656         __le32 iocs[256];
 657         __u8   resv[2048];
 658 };
 659
 660 enum nvme_ana_state {
 661         NVME_ANA_OPTIMIZED              = 0x01,
 662         NVME_ANA_NONOPTIMIZED           = 0x02,
 663         NVME_ANA_INACCESSIBLE           = 0x03,
 664         NVME_ANA_PERSISTENT_LOSS        = 0x04,
 665         NVME_ANA_CHANGE                 = 0x0f,
 666 };
 667
 668 struct nvme_ana_group_desc {
 669         __le32  grpid;
 670         __le32  nnsids;
 671         __le64  chgcnt;
 672         __u8    state;
 673         __u8    rsvd17[15];
 674         __le32  nsids[];
 675 };
 676
 677 /* flag for the log specific field of the ANA log */
 678 #define NVME_ANA_LOG_RGO        (1 << 0)
 679
 680 struct nvme_ana_rsp_hdr {
 681         __le64  chgcnt;
 682         __le16  ngrps;
 683         __le16  rsvd10[3];
 684 };
 685
 686 struct nvme_zone_descriptor {
 687         __u8            zt;
 688         __u8            zs;
 689         __u8            za;
 690         __u8            rsvd3[5];
 691         __le64          zcap;
 692         __le64          zslba;
 693         __le64          wp;
 694         __u8            rsvd32[32];
 695 };
 696
 697 enum {
 698         NVME_ZONE_TYPE_SEQWRITE_REQ     = 0x2,
 699 };
 700
 701 struct nvme_zone_report {
 702         __le64          nr_zones;
 703         __u8            resv8[56];
 704         struct nvme_zone_descriptor entries[];
 705 };
 706
 707 enum {
 708         NVME_SMART_CRIT_SPARE           = 1 << 0,
 709         NVME_SMART_CRIT_TEMPERATURE     = 1 << 1,
 710         NVME_SMART_CRIT_RELIABILITY     = 1 << 2,
 711         NVME_SMART_CRIT_MEDIA           = 1 << 3,
 712         NVME_SMART_CRIT_VOLATILE_MEMORY = 1 << 4,
 713 };
 714
 715 enum {
 716         NVME_AER_ERROR                  = 0,
 717         NVME_AER_SMART                  = 1,
 718         NVME_AER_NOTICE                 = 2,
 719         NVME_AER_CSS                    = 6,
 720         NVME_AER_VS                     = 7,
 721 };
 722
 723 enum {
 724         NVME_AER_ERROR_PERSIST_INT_ERR  = 0x03,
 725 };
 726
 727 enum {
 728         NVME_AER_NOTICE_NS_CHANGED      = 0x00,
 729         NVME_AER_NOTICE_FW_ACT_STARTING = 0x01,
 730         NVME_AER_NOTICE_ANA             = 0x03,
 731         NVME_AER_NOTICE_DISC_CHANGED    = 0xf0,
 732 };
 733
 734 enum {
 735         NVME_AEN_BIT_NS_ATTR            = 8,
 736         NVME_AEN_BIT_FW_ACT             = 9,
 737         NVME_AEN_BIT_ANA_CHANGE         = 11,
 738         NVME_AEN_BIT_DISC_CHANGE        = 31,
 739 };
 740
 741 enum {
 742         NVME_AEN_CFG_NS_ATTR            = 1 << NVME_AEN_BIT_NS_ATTR,
 743         NVME_AEN_CFG_FW_ACT             = 1 << NVME_AEN_BIT_FW_ACT,
 744         NVME_AEN_CFG_ANA_CHANGE         = 1 << NVME_AEN_BIT_ANA_CHANGE,
 745         NVME_AEN_CFG_DISC_CHANGE        = 1 << NVME_AEN_BIT_DISC_CHANGE,
 746 };
 747
 748 struct nvme_lba_range_type {
 749         __u8                    type;
 750         __u8                    attributes;
 751         __u8                    rsvd2[14];
 752         __le64                  slba;
 753         __le64                  nlb;
 754         __u8                    guid[16];
 755         __u8                    rsvd48[16];
 756 };
 757
 758 enum {
 759         NVME_LBART_TYPE_FS      = 0x01,
 760         NVME_LBART_TYPE_RAID    = 0x02,
 761         NVME_LBART_TYPE_CACHE   = 0x03,
 762         NVME_LBART_TYPE_SWAP    = 0x04,
 763
 764         NVME_LBART_ATTRIB_TEMP  = 1 << 0,
 765         NVME_LBART_ATTRIB_HIDE  = 1 << 1,
 766 };
 767
 768 enum nvme_pr_type {
 769         NVME_PR_WRITE_EXCLUSIVE                 = 1,
 770         NVME_PR_EXCLUSIVE_ACCESS                = 2,
 771         NVME_PR_WRITE_EXCLUSIVE_REG_ONLY        = 3,
 772         NVME_PR_EXCLUSIVE_ACCESS_REG_ONLY       = 4,
 773         NVME_PR_WRITE_EXCLUSIVE_ALL_REGS        = 5,
 774         NVME_PR_EXCLUSIVE_ACCESS_ALL_REGS       = 6,
 775 };
 776
 777 enum nvme_eds {
 778         NVME_EXTENDED_DATA_STRUCT       = 0x1,
 779 };
 780
 781 struct nvme_registered_ctrl {
 782         __le16  cntlid;
 783         __u8    rcsts;
 784         __u8    rsvd3[5];
 785         __le64  hostid;
 786         __le64  rkey;
 787 };
 788
 789 struct nvme_reservation_status {
 790         __le32  gen;
 791         __u8    rtype;
 792         __u8    regctl[2];
 793         __u8    resv5[2];
 794         __u8    ptpls;
 795         __u8    resv10[14];
 796         struct nvme_registered_ctrl regctl_ds[];
 797 };
 798
 799 struct nvme_registered_ctrl_ext {
 800         __le16  cntlid;
 801         __u8    rcsts;
 802         __u8    rsvd3[5];
 803         __le64  rkey;
 804         __u8    hostid[16];
 805         __u8    rsvd32[32];
 806 };
 807
 808 struct nvme_reservation_status_ext {
 809         __le32  gen;
 810         __u8    rtype;
 811         __u8    regctl[2];
 812         __u8    resv5[2];
 813         __u8    ptpls;
 814         __u8    resv10[14];
 815         __u8    rsvd24[40];
 816         struct nvme_registered_ctrl_ext regctl_eds[];
 817 };
 818
 819 enum nvme_async_event_type {
 820         NVME_AER_TYPE_ERROR     = 0,
 821         NVME_AER_TYPE_SMART     = 1,
 822         NVME_AER_TYPE_NOTICE    = 2,
 823 };
 824
 825 /* I/O commands */
 826
 827 enum nvme_opcode {
 828         nvme_cmd_flush          = 0x00,
 829         nvme_cmd_write          = 0x01,
 830         nvme_cmd_read           = 0x02,
 831         nvme_cmd_write_uncor    = 0x04,
 832         nvme_cmd_compare        = 0x05,
 833         nvme_cmd_write_zeroes   = 0x08,
 834         nvme_cmd_dsm            = 0x09,
 835         nvme_cmd_verify         = 0x0c,
 836         nvme_cmd_resv_register  = 0x0d,
 837         nvme_cmd_resv_report    = 0x0e,
 838         nvme_cmd_resv_acquire   = 0x11,
 839         nvme_cmd_resv_release   = 0x15,
 840         nvme_cmd_zone_mgmt_send = 0x79,
 841         nvme_cmd_zone_mgmt_recv = 0x7a,
 842         nvme_cmd_zone_append    = 0x7d,
 843         nvme_cmd_vendor_start   = 0x80,
 844 };
 845
 846 #define nvme_opcode_name(opcode)        { opcode, #opcode }
 847 #define show_nvm_opcode_name(val)                               \
 848         __print_symbolic(val,                                   \
 849                 nvme_opcode_name(nvme_cmd_flush),               \
 850                 nvme_opcode_name(nvme_cmd_write),               \
 851                 nvme_opcode_name(nvme_cmd_read),                \
 852                 nvme_opcode_name(nvme_cmd_write_uncor),         \
 853                 nvme_opcode_name(nvme_cmd_compare),             \
 854                 nvme_opcode_name(nvme_cmd_write_zeroes),        \
 855                 nvme_opcode_name(nvme_cmd_dsm),                 \
 856                 nvme_opcode_name(nvme_cmd_verify),              \
 857                 nvme_opcode_name(nvme_cmd_resv_register),       \
 858                 nvme_opcode_name(nvme_cmd_resv_report),         \
 859                 nvme_opcode_name(nvme_cmd_resv_acquire),        \
 860                 nvme_opcode_name(nvme_cmd_resv_release),        \
 861                 nvme_opcode_name(nvme_cmd_zone_mgmt_send),      \
 862                 nvme_opcode_name(nvme_cmd_zone_mgmt_recv),      \
 863                 nvme_opcode_name(nvme_cmd_zone_append))
 864
 865
 866
 867 /*
 868  * Descriptor subtype - lower 4 bits of nvme_(keyed_)sgl_desc identifier
 869  *
 870  * @NVME_SGL_FMT_ADDRESS:     absolute address of the data block
 871  * @NVME_SGL_FMT_OFFSET:      relative offset of the in-capsule data block
 872  * @NVME_SGL_FMT_TRANSPORT_A: transport defined format, value 0xA
 873  * @NVME_SGL_FMT_INVALIDATE:  RDMA transport specific remote invalidation
 874  *                            request subtype
 875  */
 876 enum {
 877         NVME_SGL_FMT_ADDRESS            = 0x00,
 878         NVME_SGL_FMT_OFFSET             = 0x01,
 879         NVME_SGL_FMT_TRANSPORT_A        = 0x0A,
 880         NVME_SGL_FMT_INVALIDATE         = 0x0f,
 881 };
 882
 883 /*
 884  * Descriptor type - upper 4 bits of nvme_(keyed_)sgl_desc identifier
 885  *
 886  * For struct nvme_sgl_desc:
 887  *   @NVME_SGL_FMT_DATA_DESC:           data block descriptor
 888  *   @NVME_SGL_FMT_SEG_DESC:            sgl segment descriptor
 889  *   @NVME_SGL_FMT_LAST_SEG_DESC:       last sgl segment descriptor
 890  *
 891  * For struct nvme_keyed_sgl_desc:
 892  *   @NVME_KEY_SGL_FMT_DATA_DESC:       keyed data block descriptor
 893  *
 894  * Transport-specific SGL types:
 895  *   @NVME_TRANSPORT_SGL_DATA_DESC:     Transport SGL data dlock descriptor
 896  */
 897 enum {
 898         NVME_SGL_FMT_DATA_DESC          = 0x00,
 899         NVME_SGL_FMT_SEG_DESC           = 0x02,
 900         NVME_SGL_FMT_LAST_SEG_DESC      = 0x03,
 901         NVME_KEY_SGL_FMT_DATA_DESC      = 0x04,
 902         NVME_TRANSPORT_SGL_DATA_DESC    = 0x05,
 903 };
 904
 905 struct nvme_sgl_desc {
 906         __le64  addr;
 907         __le32  length;
 908         __u8    rsvd[3];
 909         __u8    type;
 910 };
 911
 912 struct nvme_keyed_sgl_desc {
 913         __le64  addr;
 914         __u8    length[3];
 915         __u8    key[4];
 916         __u8    type;
 917 };
 918
 919 union nvme_data_ptr {
 920         struct {
 921                 __le64  prp1;
 922                 __le64  prp2;
 923         };
 924         struct nvme_sgl_desc    sgl;
 925         struct nvme_keyed_sgl_desc ksgl;
 926 };
 927
 928 /*
 929  * Lowest two bits of our flags field (FUSE field in the spec):
 930  *
 931  * @NVME_CMD_FUSE_FIRST:   Fused Operation, first command
 932  * @NVME_CMD_FUSE_SECOND:  Fused Operation, second command
 933  *
 934  * Highest two bits in our flags field (PSDT field in the spec):
 935  *
 936  * @NVME_CMD_PSDT_SGL_METABUF:  Use SGLS for this transfer,
 937  *      If used, MPTR contains addr of single physical buffer (byte aligned).
 938  * @NVME_CMD_PSDT_SGL_METASEG:  Use SGLS for this transfer,
 939  *      If used, MPTR contains an address of an SGL segment containing
 940  *      exactly 1 SGL descriptor (qword aligned).
 941  */
 942 enum {
 943         NVME_CMD_FUSE_FIRST     = (1 << 0),
 944         NVME_CMD_FUSE_SECOND    = (1 << 1),
 945
 946         NVME_CMD_SGL_METABUF    = (1 << 6),
 947         NVME_CMD_SGL_METASEG    = (1 << 7),
 948         NVME_CMD_SGL_ALL        = NVME_CMD_SGL_METABUF | NVME_CMD_SGL_METASEG,
 949 };
 950
 951 struct nvme_common_command {
 952         __u8                    opcode;
 953         __u8                    flags;
 954         __u16                   command_id;
 955         __le32                  nsid;
 956         __le32                  cdw2[2];
 957         __le64                  metadata;
 958         union nvme_data_ptr     dptr;
 959         struct_group(cdws,
 960         __le32                  cdw10;
 961         __le32                  cdw11;
 962         __le32                  cdw12;
 963         __le32                  cdw13;
 964         __le32                  cdw14;
 965         __le32                  cdw15;
 966         );
 967 };
 968
 969 struct nvme_rw_command {
 970         __u8                    opcode;
 971         __u8                    flags;
 972         __u16                   command_id;
 973         __le32                  nsid;
 974         __le32                  cdw2;
 975         __le32                  cdw3;
 976         __le64                  metadata;
 977         union nvme_data_ptr     dptr;
 978         __le64                  slba;
 979         __le16                  length;
 980         __le16                  control;
 981         __le32                  dsmgmt;
 982         __le32                  reftag;
 983         __le16                  apptag;
 984         __le16                  appmask;
 985 };
 986
 987 enum {
 988         NVME_RW_LR                      = 1 << 15,
 989         NVME_RW_FUA                     = 1 << 14,
 990         NVME_RW_APPEND_PIREMAP          = 1 << 9,
 991         NVME_RW_DSM_FREQ_UNSPEC         = 0,
 992         NVME_RW_DSM_FREQ_TYPICAL        = 1,
 993         NVME_RW_DSM_FREQ_RARE           = 2,
 994         NVME_RW_DSM_FREQ_READS          = 3,
 995         NVME_RW_DSM_FREQ_WRITES         = 4,
 996         NVME_RW_DSM_FREQ_RW             = 5,
 997         NVME_RW_DSM_FREQ_ONCE           = 6,
 998         NVME_RW_DSM_FREQ_PREFETCH       = 7,
 999         NVME_RW_DSM_FREQ_TEMP           = 8,
1000         NVME_RW_DSM_LATENCY_NONE        = 0 << 4,
1001         NVME_RW_DSM_LATENCY_IDLE        = 1 << 4,
1002         NVME_RW_DSM_LATENCY_NORM        = 2 << 4,
1003         NVME_RW_DSM_LATENCY_LOW         = 3 << 4,
1004         NVME_RW_DSM_SEQ_REQ             = 1 << 6,
1005         NVME_RW_DSM_COMPRESSED          = 1 << 7,
1006         NVME_RW_PRINFO_PRCHK_REF        = 1 << 10,
1007         NVME_RW_PRINFO_PRCHK_APP        = 1 << 11,
1008         NVME_RW_PRINFO_PRCHK_GUARD      = 1 << 12,
1009         NVME_RW_PRINFO_PRACT            = 1 << 13,
1010         NVME_RW_DTYPE_STREAMS           = 1 << 4,
1011         NVME_WZ_DEAC                    = 1 << 9,
1012 };
1013
1014 struct nvme_dsm_cmd {
1015         __u8                    opcode;
1016         __u8                    flags;
1017         __u16                   command_id;
1018         __le32                  nsid;
1019         __u64                   rsvd2[2];
1020         union nvme_data_ptr     dptr;
1021         __le32                  nr;
1022         __le32                  attributes;
1023         __u32                   rsvd12[4];
1024 };
1025
1026 enum {
1027         NVME_DSMGMT_IDR         = 1 << 0,
1028         NVME_DSMGMT_IDW         = 1 << 1,
1029         NVME_DSMGMT_AD          = 1 << 2,
1030 };
1031
1032 #define NVME_DSM_MAX_RANGES     256
1033
1034 struct nvme_dsm_range {
1035         __le32                  cattr;
1036         __le32                  nlb;
1037         __le64                  slba;
1038 };
1039
1040 struct nvme_write_zeroes_cmd {
1041         __u8                    opcode;
1042         __u8                    flags;
1043         __u16                   command_id;
1044         __le32                  nsid;
1045         __u64                   rsvd2;
1046         __le64                  metadata;
1047         union nvme_data_ptr     dptr;
1048         __le64                  slba;
1049         __le16                  length;
1050         __le16                  control;
1051         __le32                  dsmgmt;
1052         __le32                  reftag;
1053         __le16                  apptag;
1054         __le16                  appmask;
1055 };
1056
1057 enum nvme_zone_mgmt_action {
1058         NVME_ZONE_CLOSE         = 0x1,
1059         NVME_ZONE_FINISH        = 0x2,
1060         NVME_ZONE_OPEN          = 0x3,
1061         NVME_ZONE_RESET         = 0x4,
1062         NVME_ZONE_OFFLINE       = 0x5,
1063         NVME_ZONE_SET_DESC_EXT  = 0x10,
1064 };
1065
1066 struct nvme_zone_mgmt_send_cmd {
1067         __u8                    opcode;
1068         __u8                    flags;
1069         __u16                   command_id;
1070         __le32                  nsid;
1071         __le32                  cdw2[2];
1072         __le64                  metadata;
1073         union nvme_data_ptr     dptr;
1074         __le64                  slba;
1075         __le32                  cdw12;
1076         __u8                    zsa;
1077         __u8                    select_all;
1078         __u8                    rsvd13[2];
1079         __le32                  cdw14[2];
1080 };
1081
1082 struct nvme_zone_mgmt_recv_cmd {
1083         __u8                    opcode;
1084         __u8                    flags;
1085         __u16                   command_id;
1086         __le32                  nsid;
1087         __le64                  rsvd2[2];
1088         union nvme_data_ptr     dptr;
1089         __le64                  slba;
1090         __le32                  numd;
1091         __u8                    zra;
1092         __u8                    zrasf;
1093         __u8                    pr;
1094         __u8                    rsvd13;
1095         __le32                  cdw14[2];
1096 };
1097
1098 enum {
1099         NVME_ZRA_ZONE_REPORT            = 0,
1100         NVME_ZRASF_ZONE_REPORT_ALL      = 0,
1101         NVME_ZRASF_ZONE_STATE_EMPTY     = 0x01,
1102         NVME_ZRASF_ZONE_STATE_IMP_OPEN  = 0x02,
1103         NVME_ZRASF_ZONE_STATE_EXP_OPEN  = 0x03,
1104         NVME_ZRASF_ZONE_STATE_CLOSED    = 0x04,
1105         NVME_ZRASF_ZONE_STATE_READONLY  = 0x05,
1106         NVME_ZRASF_ZONE_STATE_FULL      = 0x06,
1107         NVME_ZRASF_ZONE_STATE_OFFLINE   = 0x07,
1108         NVME_REPORT_ZONE_PARTIAL        = 1,
1109 };
1110
1111 /* Features */
1112
1113 enum {
1114         NVME_TEMP_THRESH_MASK           = 0xffff,
1115         NVME_TEMP_THRESH_SELECT_SHIFT   = 16,
1116         NVME_TEMP_THRESH_TYPE_UNDER     = 0x100000,
1117 };
1118
1119 struct nvme_feat_auto_pst {
1120         __le64 entries[32];
1121 };
1122
1123 enum {
1124         NVME_HOST_MEM_ENABLE    = (1 << 0),
1125         NVME_HOST_MEM_RETURN    = (1 << 1),
1126 };
1127
1128 struct nvme_feat_host_behavior {
1129         __u8 acre;
1130         __u8 etdas;
1131         __u8 lbafee;
1132         __u8 resv1[509];
1133 };
1134
1135 enum {
1136         NVME_ENABLE_ACRE        = 1,
1137         NVME_ENABLE_LBAFEE      = 1,
1138 };
1139
1140 /* Admin commands */
1141
1142 enum nvme_admin_opcode {
1143         nvme_admin_delete_sq            = 0x00,
1144         nvme_admin_create_sq            = 0x01,
1145         nvme_admin_get_log_page         = 0x02,
1146         nvme_admin_delete_cq            = 0x04,
1147         nvme_admin_create_cq            = 0x05,
1148         nvme_admin_identify             = 0x06,
1149         nvme_admin_abort_cmd            = 0x08,
1150         nvme_admin_set_features         = 0x09,
1151         nvme_admin_get_features         = 0x0a,
1152         nvme_admin_async_event          = 0x0c,
1153         nvme_admin_ns_mgmt              = 0x0d,
1154         nvme_admin_activate_fw          = 0x10,
1155         nvme_admin_download_fw          = 0x11,
1156         nvme_admin_dev_self_test        = 0x14,
1157         nvme_admin_ns_attach            = 0x15,
1158         nvme_admin_keep_alive           = 0x18,
1159         nvme_admin_directive_send       = 0x19,
1160         nvme_admin_directive_recv       = 0x1a,
1161         nvme_admin_virtual_mgmt         = 0x1c,
1162         nvme_admin_nvme_mi_send         = 0x1d,
1163         nvme_admin_nvme_mi_recv         = 0x1e,
1164         nvme_admin_dbbuf                = 0x7C,
1165         nvme_admin_format_nvm           = 0x80,
1166         nvme_admin_security_send        = 0x81,
1167         nvme_admin_security_recv        = 0x82,
1168         nvme_admin_sanitize_nvm         = 0x84,
1169         nvme_admin_get_lba_status       = 0x86,
1170         nvme_admin_vendor_start         = 0xC0,
1171 };
1172
1173 #define nvme_admin_opcode_name(opcode)  { opcode, #opcode }
1174 #define show_admin_opcode_name(val)                                     \
1175         __print_symbolic(val,                                           \
1176                 nvme_admin_opcode_name(nvme_admin_delete_sq),           \
1177                 nvme_admin_opcode_name(nvme_admin_create_sq),           \
1178                 nvme_admin_opcode_name(nvme_admin_get_log_page),        \
1179                 nvme_admin_opcode_name(nvme_admin_delete_cq),           \
1180                 nvme_admin_opcode_name(nvme_admin_create_cq),           \
1181                 nvme_admin_opcode_name(nvme_admin_identify),            \
1182                 nvme_admin_opcode_name(nvme_admin_abort_cmd),           \
1183                 nvme_admin_opcode_name(nvme_admin_set_features),        \
1184                 nvme_admin_opcode_name(nvme_admin_get_features),        \
1185                 nvme_admin_opcode_name(nvme_admin_async_event),         \
1186                 nvme_admin_opcode_name(nvme_admin_ns_mgmt),             \
1187                 nvme_admin_opcode_name(nvme_admin_activate_fw),         \
1188                 nvme_admin_opcode_name(nvme_admin_download_fw),         \
1189                 nvme_admin_opcode_name(nvme_admin_dev_self_test),       \
1190                 nvme_admin_opcode_name(nvme_admin_ns_attach),           \
1191                 nvme_admin_opcode_name(nvme_admin_keep_alive),          \
1192                 nvme_admin_opcode_name(nvme_admin_directive_send),      \
1193                 nvme_admin_opcode_name(nvme_admin_directive_recv),      \
1194                 nvme_admin_opcode_name(nvme_admin_virtual_mgmt),        \
1195                 nvme_admin_opcode_name(nvme_admin_nvme_mi_send),        \
1196                 nvme_admin_opcode_name(nvme_admin_nvme_mi_recv),        \
1197                 nvme_admin_opcode_name(nvme_admin_dbbuf),               \
1198                 nvme_admin_opcode_name(nvme_admin_format_nvm),          \
1199                 nvme_admin_opcode_name(nvme_admin_security_send),       \
1200                 nvme_admin_opcode_name(nvme_admin_security_recv),       \
1201                 nvme_admin_opcode_name(nvme_admin_sanitize_nvm),        \
1202                 nvme_admin_opcode_name(nvme_admin_get_lba_status))
1203
1204 enum {
1205         NVME_QUEUE_PHYS_CONTIG  = (1 << 0),
1206         NVME_CQ_IRQ_ENABLED     = (1 << 1),
1207         NVME_SQ_PRIO_URGENT     = (0 << 1),
1208         NVME_SQ_PRIO_HIGH       = (1 << 1),
1209         NVME_SQ_PRIO_MEDIUM     = (2 << 1),
1210         NVME_SQ_PRIO_LOW        = (3 << 1),
1211         NVME_FEAT_ARBITRATION   = 0x01,
1212         NVME_FEAT_POWER_MGMT    = 0x02,
1213         NVME_FEAT_LBA_RANGE     = 0x03,
1214         NVME_FEAT_TEMP_THRESH   = 0x04,
1215         NVME_FEAT_ERR_RECOVERY  = 0x05,
1216         NVME_FEAT_VOLATILE_WC   = 0x06,
1217         NVME_FEAT_NUM_QUEUES    = 0x07,
1218         NVME_FEAT_IRQ_COALESCE  = 0x08,
1219         NVME_FEAT_IRQ_CONFIG    = 0x09,
1220         NVME_FEAT_WRITE_ATOMIC  = 0x0a,
1221         NVME_FEAT_ASYNC_EVENT   = 0x0b,
1222         NVME_FEAT_AUTO_PST      = 0x0c,
1223         NVME_FEAT_HOST_MEM_BUF  = 0x0d,
1224         NVME_FEAT_TIMESTAMP     = 0x0e,
1225         NVME_FEAT_KATO          = 0x0f,
1226         NVME_FEAT_HCTM          = 0x10,
1227         NVME_FEAT_NOPSC         = 0x11,
1228         NVME_FEAT_RRL           = 0x12,
1229         NVME_FEAT_PLM_CONFIG    = 0x13,
1230         NVME_FEAT_PLM_WINDOW    = 0x14,
1231         NVME_FEAT_HOST_BEHAVIOR = 0x16,
1232         NVME_FEAT_SANITIZE      = 0x17,
1233         NVME_FEAT_SW_PROGRESS   = 0x80,
1234         NVME_FEAT_HOST_ID       = 0x81,
1235         NVME_FEAT_RESV_MASK     = 0x82,
1236         NVME_FEAT_RESV_PERSIST  = 0x83,
1237         NVME_FEAT_WRITE_PROTECT = 0x84,
1238         NVME_FEAT_VENDOR_START  = 0xC0,
1239         NVME_FEAT_VENDOR_END    = 0xFF,
1240         NVME_LOG_ERROR          = 0x01,
1241         NVME_LOG_SMART          = 0x02,
1242         NVME_LOG_FW_SLOT        = 0x03,
1243         NVME_LOG_CHANGED_NS     = 0x04,
1244         NVME_LOG_CMD_EFFECTS    = 0x05,
1245         NVME_LOG_DEVICE_SELF_TEST = 0x06,
1246         NVME_LOG_TELEMETRY_HOST = 0x07,
1247         NVME_LOG_TELEMETRY_CTRL = 0x08,
1248         NVME_LOG_ENDURANCE_GROUP = 0x09,
1249         NVME_LOG_ANA            = 0x0c,
1250         NVME_LOG_DISC           = 0x70,
1251         NVME_LOG_RESERVATION    = 0x80,
1252         NVME_FWACT_REPL         = (0 << 3),
1253         NVME_FWACT_REPL_ACTV    = (1 << 3),
1254         NVME_FWACT_ACTV         = (2 << 3),
1255 };
1256
1257 /* NVMe Namespace Write Protect State */
1258 enum {
1259         NVME_NS_NO_WRITE_PROTECT = 0,
1260         NVME_NS_WRITE_PROTECT,
1261         NVME_NS_WRITE_PROTECT_POWER_CYCLE,
1262         NVME_NS_WRITE_PROTECT_PERMANENT,
1263 };
1264
1265 #define NVME_MAX_CHANGED_NAMESPACES     1024
1266
1267 struct nvme_identify {
1268         __u8                    opcode;
1269         __u8                    flags;
1270         __u16                   command_id;
1271         __le32                  nsid;
1272         __u64                   rsvd2[2];
1273         union nvme_data_ptr     dptr;
1274         __u8                    cns;
1275         __u8                    rsvd3;
1276         __le16                  ctrlid;
1277         __u8                    rsvd11[3];
1278         __u8                    csi;
1279         __u32                   rsvd12[4];
1280 };
1281
1282 #define NVME_IDENTIFY_DATA_SIZE 4096
1283
1284 struct nvme_features {
1285         __u8                    opcode;
1286         __u8                    flags;
1287         __u16                   command_id;
1288         __le32                  nsid;
1289         __u64                   rsvd2[2];
1290         union nvme_data_ptr     dptr;
1291         __le32                  fid;
1292         __le32                  dword11;
1293         __le32                  dword12;
1294         __le32                  dword13;
1295         __le32                  dword14;
1296         __le32                  dword15;
1297 };
1298
1299 struct nvme_host_mem_buf_desc {
1300         __le64                  addr;
1301         __le32                  size;
1302         __u32                   rsvd;
1303 };
1304
1305 struct nvme_create_cq {
1306         __u8                    opcode;
1307         __u8                    flags;
1308         __u16                   command_id;
1309         __u32                   rsvd1[5];
1310         __le64                  prp1;
1311         __u64                   rsvd8;
1312         __le16                  cqid;
1313         __le16                  qsize;
1314         __le16                  cq_flags;
1315         __le16                  irq_vector;
1316         __u32                   rsvd12[4];
1317 };
1318
1319 struct nvme_create_sq {
1320         __u8                    opcode;
1321         __u8                    flags;
1322         __u16                   command_id;
1323         __u32                   rsvd1[5];
1324         __le64                  prp1;
1325         __u64                   rsvd8;
1326         __le16                  sqid;
1327         __le16                  qsize;
1328         __le16                  sq_flags;
1329         __le16                  cqid;
1330         __u32                   rsvd12[4];
1331 };
1332
1333 struct nvme_delete_queue {
1334         __u8                    opcode;
1335         __u8                    flags;
1336         __u16                   command_id;
1337         __u32                   rsvd1[9];
1338         __le16                  qid;
1339         __u16                   rsvd10;
1340         __u32                   rsvd11[5];
1341 };
1342
1343 struct nvme_abort_cmd {
1344         __u8                    opcode;
1345         __u8                    flags;
1346         __u16                   command_id;
1347         __u32                   rsvd1[9];
1348         __le16                  sqid;
1349         __u16                   cid;
1350         __u32                   rsvd11[5];
1351 };
1352
1353 struct nvme_download_firmware {
1354         __u8                    opcode;
1355         __u8                    flags;
1356         __u16                   command_id;
1357         __u32                   rsvd1[5];
1358         union nvme_data_ptr     dptr;
1359         __le32                  numd;
1360         __le32                  offset;
1361         __u32                   rsvd12[4];
1362 };
1363
1364 struct nvme_format_cmd {
1365         __u8                    opcode;
1366         __u8                    flags;
1367         __u16                   command_id;
1368         __le32                  nsid;
1369         __u64                   rsvd2[4];
1370         __le32                  cdw10;
1371         __u32                   rsvd11[5];
1372 };
1373
1374 struct nvme_get_log_page_command {
1375         __u8                    opcode;
1376         __u8                    flags;
1377         __u16                   command_id;
1378         __le32                  nsid;
1379         __u64                   rsvd2[2];
1380         union nvme_data_ptr     dptr;
1381         __u8                    lid;
1382         __u8                    lsp; /* upper 4 bits reserved */
1383         __le16                  numdl;
1384         __le16                  numdu;
1385         __u16                   rsvd11;
1386         union {
1387                 struct {
1388                         __le32 lpol;
1389                         __le32 lpou;
1390                 };
1391                 __le64 lpo;
1392         };
1393         __u8                    rsvd14[3];
1394         __u8                    csi;
1395         __u32                   rsvd15;
1396 };
1397
1398 struct nvme_directive_cmd {
1399         __u8                    opcode;
1400         __u8                    flags;
1401         __u16                   command_id;
1402         __le32                  nsid;
1403         __u64                   rsvd2[2];
1404         union nvme_data_ptr     dptr;
1405         __le32                  numd;
1406         __u8                    doper;
1407         __u8                    dtype;
1408         __le16                  dspec;
1409         __u8                    endir;
1410         __u8                    tdtype;
1411         __u16                   rsvd15;
1412
1413         __u32                   rsvd16[3];
1414 };
1415
1416 /*
1417  * Fabrics subcommands.
1418  */
1419 enum nvmf_fabrics_opcode {
1420         nvme_fabrics_command            = 0x7f,
1421 };
1422
1423 enum nvmf_capsule_command {
1424         nvme_fabrics_type_property_set  = 0x00,
1425         nvme_fabrics_type_connect       = 0x01,
1426         nvme_fabrics_type_property_get  = 0x04,
1427         nvme_fabrics_type_auth_send     = 0x05,
1428         nvme_fabrics_type_auth_receive  = 0x06,
1429 };
1430
1431 #define nvme_fabrics_type_name(type)   { type, #type }
1432 #define show_fabrics_type_name(type)                                    \
1433         __print_symbolic(type,                                          \
1434                 nvme_fabrics_type_name(nvme_fabrics_type_property_set), \
1435                 nvme_fabrics_type_name(nvme_fabrics_type_connect),      \
1436                 nvme_fabrics_type_name(nvme_fabrics_type_property_get), \
1437                 nvme_fabrics_type_name(nvme_fabrics_type_auth_send),    \
1438                 nvme_fabrics_type_name(nvme_fabrics_type_auth_receive))
1439
1440 /*
1441  * If not fabrics command, fctype will be ignored.
1442  */
1443 #define show_opcode_name(qid, opcode, fctype)                   \
1444         ((opcode) == nvme_fabrics_command ?                     \
1445          show_fabrics_type_name(fctype) :                       \
1446         ((qid) ?                                                \
1447          show_nvm_opcode_name(opcode) :                         \
1448          show_admin_opcode_name(opcode)))
1449
1450 struct nvmf_common_command {
1451         __u8    opcode;
1452         __u8    resv1;
1453         __u16   command_id;
1454         __u8    fctype;
1455         __u8    resv2[35];
1456         __u8    ts[24];
1457 };
1458
1459 /*
1460  * The legal cntlid range a NVMe Target will provide.
1461  * Note that cntlid of value 0 is considered illegal in the fabrics world.
1462  * Devices based on earlier specs did not have the subsystem concept;
1463  * therefore, those devices had their cntlid value set to 0 as a result.
1464  */
1465 #define NVME_CNTLID_MIN         1
1466 #define NVME_CNTLID_MAX         0xffef
1467 #define NVME_CNTLID_DYNAMIC     0xffff
1468
1469 #define MAX_DISC_LOGS   255
1470
1471 /* Discovery log page entry flags (EFLAGS): */
1472 enum {
1473         NVME_DISC_EFLAGS_EPCSD          = (1 << 1),
1474         NVME_DISC_EFLAGS_DUPRETINFO     = (1 << 0),
1475 };
1476
1477 /* Discovery log page entry */
1478 struct nvmf_disc_rsp_page_entry {
1479         __u8            trtype;
1480         __u8            adrfam;
1481         __u8            subtype;
1482         __u8            treq;
1483         __le16          portid;
1484         __le16          cntlid;
1485         __le16          asqsz;
1486         __le16          eflags;
1487         __u8            resv10[20];
1488         char            trsvcid[NVMF_TRSVCID_SIZE];
1489         __u8            resv64[192];
1490         char            subnqn[NVMF_NQN_FIELD_LEN];
1491         char            traddr[NVMF_TRADDR_SIZE];
1492         union tsas {
1493                 char            common[NVMF_TSAS_SIZE];
1494                 struct rdma {
1495                         __u8    qptype;
1496                         __u8    prtype;
1497                         __u8    cms;
1498                         __u8    resv3[5];
1499                         __u16   pkey;
1500                         __u8    resv10[246];
1501                 } rdma;
1502                 struct tcp {
1503                         __u8    sectype;
1504                 } tcp;
1505         } tsas;
1506 };
1507
1508 /* Discovery log page header */
1509 struct nvmf_disc_rsp_page_hdr {
1510         __le64          genctr;
1511         __le64          numrec;
1512         __le16          recfmt;
1513         __u8            resv14[1006];
1514         struct nvmf_disc_rsp_page_entry entries[];
1515 };
1516
1517 enum {
1518         NVME_CONNECT_DISABLE_SQFLOW     = (1 << 2),
1519 };
1520
1521 struct nvmf_connect_command {
1522         __u8            opcode;
1523         __u8            resv1;
1524         __u16           command_id;
1525         __u8            fctype;
1526         __u8            resv2[19];
1527         union nvme_data_ptr dptr;
1528         __le16          recfmt;
1529         __le16          qid;
1530         __le16          sqsize;
1531         __u8            cattr;
1532         __u8            resv3;
1533         __le32          kato;
1534         __u8            resv4[12];
1535 };
1536
1537 enum {
1538         NVME_CONNECT_AUTHREQ_ASCR       = (1U << 18),
1539         NVME_CONNECT_AUTHREQ_ATR        = (1U << 17),
1540 };
1541
1542 struct nvmf_connect_data {
1543         uuid_t          hostid;
1544         __le16          cntlid;
1545         char            resv4[238];
1546         char            subsysnqn[NVMF_NQN_FIELD_LEN];
1547         char            hostnqn[NVMF_NQN_FIELD_LEN];
1548         char            resv5[256];
1549 };
1550
1551 struct nvmf_property_set_command {
1552         __u8            opcode;
1553         __u8            resv1;
1554         __u16           command_id;
1555         __u8            fctype;
1556         __u8            resv2[35];
1557         __u8            attrib;
1558         __u8            resv3[3];
1559         __le32          offset;
1560         __le64          value;
1561         __u8            resv4[8];
1562 };
1563
1564 struct nvmf_property_get_command {
1565         __u8            opcode;
1566         __u8            resv1;
1567         __u16           command_id;
1568         __u8            fctype;
1569         __u8            resv2[35];
1570         __u8            attrib;
1571         __u8            resv3[3];
1572         __le32          offset;
1573         __u8            resv4[16];
1574 };
1575
1576 struct nvmf_auth_common_command {
1577         __u8            opcode;
1578         __u8            resv1;
1579         __u16           command_id;
1580         __u8            fctype;
1581         __u8            resv2[19];
1582         union nvme_data_ptr dptr;
1583         __u8            resv3;
1584         __u8            spsp0;
1585         __u8            spsp1;
1586         __u8            secp;
1587         __le32          al_tl;
1588         __u8            resv4[16];
1589 };
1590
1591 struct nvmf_auth_send_command {
1592         __u8            opcode;
1593         __u8            resv1;
1594         __u16           command_id;
1595         __u8            fctype;
1596         __u8            resv2[19];
1597         union nvme_data_ptr dptr;
1598         __u8            resv3;
1599         __u8            spsp0;
1600         __u8            spsp1;
1601         __u8            secp;
1602         __le32          tl;
1603         __u8            resv4[16];
1604 };
1605
1606 struct nvmf_auth_receive_command {
1607         __u8            opcode;
1608         __u8            resv1;
1609         __u16           command_id;
1610         __u8            fctype;
1611         __u8            resv2[19];
1612         union nvme_data_ptr dptr;
1613         __u8            resv3;
1614         __u8            spsp0;
1615         __u8            spsp1;
1616         __u8            secp;
1617         __le32          al;
1618         __u8            resv4[16];
1619 };
1620
1621 /* Value for secp */
1622 enum {
1623         NVME_AUTH_DHCHAP_PROTOCOL_IDENTIFIER    = 0xe9,
1624 };
1625
1626 /* Defined value for auth_type */
1627 enum {
1628         NVME_AUTH_COMMON_MESSAGES       = 0x00,
1629         NVME_AUTH_DHCHAP_MESSAGES       = 0x01,
1630 };
1631
1632 /* Defined messages for auth_id */
1633 enum {
1634         NVME_AUTH_DHCHAP_MESSAGE_NEGOTIATE      = 0x00,
1635         NVME_AUTH_DHCHAP_MESSAGE_CHALLENGE      = 0x01,
1636         NVME_AUTH_DHCHAP_MESSAGE_REPLY          = 0x02,
1637         NVME_AUTH_DHCHAP_MESSAGE_SUCCESS1       = 0x03,
1638         NVME_AUTH_DHCHAP_MESSAGE_SUCCESS2       = 0x04,
1639         NVME_AUTH_DHCHAP_MESSAGE_FAILURE2       = 0xf0,
1640         NVME_AUTH_DHCHAP_MESSAGE_FAILURE1       = 0xf1,
1641 };
1642
1643 struct nvmf_auth_dhchap_protocol_descriptor {
1644         __u8            authid;
1645         __u8            rsvd;
1646         __u8            halen;
1647         __u8            dhlen;
1648         __u8            idlist[60];
1649 };
1650
1651 enum {
1652         NVME_AUTH_DHCHAP_AUTH_ID        = 0x01,
1653 };
1654
1655 /* Defined hash functions for DH-HMAC-CHAP authentication */
1656 enum {
1657         NVME_AUTH_HASH_SHA256   = 0x01,
1658         NVME_AUTH_HASH_SHA384   = 0x02,
1659         NVME_AUTH_HASH_SHA512   = 0x03,
1660         NVME_AUTH_HASH_INVALID  = 0xff,
1661 };
1662
1663 /* Defined Diffie-Hellman group identifiers for DH-HMAC-CHAP authentication */
1664 enum {
1665         NVME_AUTH_DHGROUP_NULL          = 0x00,
1666         NVME_AUTH_DHGROUP_2048          = 0x01,
1667         NVME_AUTH_DHGROUP_3072          = 0x02,
1668         NVME_AUTH_DHGROUP_4096          = 0x03,
1669         NVME_AUTH_DHGROUP_6144          = 0x04,
1670         NVME_AUTH_DHGROUP_8192          = 0x05,
1671         NVME_AUTH_DHGROUP_INVALID       = 0xff,
1672 };
1673
1674 union nvmf_auth_protocol {
1675         struct nvmf_auth_dhchap_protocol_descriptor dhchap;
1676 };
1677
1678 struct nvmf_auth_dhchap_negotiate_data {
1679         __u8            auth_type;
1680         __u8            auth_id;
1681         __le16          rsvd;
1682         __le16          t_id;
1683         __u8            sc_c;
1684         __u8            napd;
1685         union nvmf_auth_protocol auth_protocol[];
1686 };
1687
1688 struct nvmf_auth_dhchap_challenge_data {
1689         __u8            auth_type;
1690         __u8            auth_id;
1691         __u16           rsvd1;
1692         __le16          t_id;
1693         __u8            hl;
1694         __u8            rsvd2;
1695         __u8            hashid;
1696         __u8            dhgid;
1697         __le16          dhvlen;
1698         __le32          seqnum;
1699         /* 'hl' bytes of challenge value */
1700         __u8            cval[];
1701         /* followed by 'dhvlen' bytes of DH value */
1702 };
1703
1704 struct nvmf_auth_dhchap_reply_data {
1705         __u8            auth_type;
1706         __u8            auth_id;
1707         __le16          rsvd1;
1708         __le16          t_id;
1709         __u8            hl;
1710         __u8            rsvd2;
1711         __u8            cvalid;
1712         __u8            rsvd3;
1713         __le16          dhvlen;
1714         __le32          seqnum;
1715         /* 'hl' bytes of response data */
1716         __u8            rval[];
1717         /* followed by 'hl' bytes of Challenge value */
1718         /* followed by 'dhvlen' bytes of DH value */
1719 };
1720
1721 enum {
1722         NVME_AUTH_DHCHAP_RESPONSE_VALID = (1 << 0),
1723 };
1724
1725 struct nvmf_auth_dhchap_success1_data {
1726         __u8            auth_type;
1727         __u8            auth_id;
1728         __le16          rsvd1;
1729         __le16          t_id;
1730         __u8            hl;
1731         __u8            rsvd2;
1732         __u8            rvalid;
1733         __u8            rsvd3[7];
1734         /* 'hl' bytes of response value */
1735         __u8            rval[];
1736 };
1737
1738 struct nvmf_auth_dhchap_success2_data {
1739         __u8            auth_type;
1740         __u8            auth_id;
1741         __le16          rsvd1;
1742         __le16          t_id;
1743         __u8            rsvd2[10];
1744 };
1745
1746 struct nvmf_auth_dhchap_failure_data {
1747         __u8            auth_type;
1748         __u8            auth_id;
1749         __le16          rsvd1;
1750         __le16          t_id;
1751         __u8            rescode;
1752         __u8            rescode_exp;
1753 };
1754
1755 enum {
1756         NVME_AUTH_DHCHAP_FAILURE_REASON_FAILED  = 0x01,
1757 };
1758
1759 enum {
1760         NVME_AUTH_DHCHAP_FAILURE_FAILED                 = 0x01,
1761         NVME_AUTH_DHCHAP_FAILURE_NOT_USABLE             = 0x02,
1762         NVME_AUTH_DHCHAP_FAILURE_CONCAT_MISMATCH        = 0x03,
1763         NVME_AUTH_DHCHAP_FAILURE_HASH_UNUSABLE          = 0x04,
1764         NVME_AUTH_DHCHAP_FAILURE_DHGROUP_UNUSABLE       = 0x05,
1765         NVME_AUTH_DHCHAP_FAILURE_INCORRECT_PAYLOAD      = 0x06,
1766         NVME_AUTH_DHCHAP_FAILURE_INCORRECT_MESSAGE      = 0x07,
1767 };
1768
1769
1770 struct nvme_dbbuf {
1771         __u8                    opcode;
1772         __u8                    flags;
1773         __u16                   command_id;
1774         __u32                   rsvd1[5];
1775         __le64                  prp1;
1776         __le64                  prp2;
1777         __u32                   rsvd12[6];
1778 };
1779
1780 struct streams_directive_params {
1781         __le16  msl;
1782         __le16  nssa;
1783         __le16  nsso;
1784         __u8    rsvd[10];
1785         __le32  sws;
1786         __le16  sgs;
1787         __le16  nsa;
1788         __le16  nso;
1789         __u8    rsvd2[6];
1790 };
1791
1792 struct nvme_command {
1793         union {
1794                 struct nvme_common_command common;
1795                 struct nvme_rw_command rw;
1796                 struct nvme_identify identify;
1797                 struct nvme_features features;
1798                 struct nvme_create_cq create_cq;
1799                 struct nvme_create_sq create_sq;
1800                 struct nvme_delete_queue delete_queue;
1801                 struct nvme_download_firmware dlfw;
1802                 struct nvme_format_cmd format;
1803                 struct nvme_dsm_cmd dsm;
1804                 struct nvme_write_zeroes_cmd write_zeroes;
1805                 struct nvme_zone_mgmt_send_cmd zms;
1806                 struct nvme_zone_mgmt_recv_cmd zmr;
1807                 struct nvme_abort_cmd abort;
1808                 struct nvme_get_log_page_command get_log_page;
1809                 struct nvmf_common_command fabrics;
1810                 struct nvmf_connect_command connect;
1811                 struct nvmf_property_set_command prop_set;
1812                 struct nvmf_property_get_command prop_get;
1813                 struct nvmf_auth_common_command auth_common;
1814                 struct nvmf_auth_send_command auth_send;
1815                 struct nvmf_auth_receive_command auth_receive;
1816                 struct nvme_dbbuf dbbuf;
1817                 struct nvme_directive_cmd directive;
1818         };
1819 };
1820
1821 static inline bool nvme_is_fabrics(struct nvme_command *cmd)
1822 {
1823         return cmd->common.opcode == nvme_fabrics_command;
1824 }
1825
1826 struct nvme_error_slot {
1827         __le64          error_count;
1828         __le16          sqid;
1829         __le16          cmdid;
1830         __le16          status_field;
1831         __le16          param_error_location;
1832         __le64          lba;
1833         __le32          nsid;
1834         __u8            vs;
1835         __u8            resv[3];
1836         __le64          cs;
1837         __u8            resv2[24];
1838 };
1839
1840 static inline bool nvme_is_write(struct nvme_command *cmd)
1841 {
1842         /*
1843          * What a mess...
1844          *
1845          * Why can't we simply have a Fabrics In and Fabrics out command?
1846          */
1847         if (unlikely(nvme_is_fabrics(cmd)))
1848                 return cmd->fabrics.fctype & 1;
1849         return cmd->common.opcode & 1;
1850 }
1851
1852 enum {
1853         /*
1854          * Generic Command Status:
1855          */
1856         NVME_SC_SUCCESS                 = 0x0,
1857         NVME_SC_INVALID_OPCODE          = 0x1,
1858         NVME_SC_INVALID_FIELD           = 0x2,
1859         NVME_SC_CMDID_CONFLICT          = 0x3,
1860         NVME_SC_DATA_XFER_ERROR         = 0x4,
1861         NVME_SC_POWER_LOSS              = 0x5,
1862         NVME_SC_INTERNAL                = 0x6,
1863         NVME_SC_ABORT_REQ               = 0x7,
1864         NVME_SC_ABORT_QUEUE             = 0x8,
1865         NVME_SC_FUSED_FAIL              = 0x9,
1866         NVME_SC_FUSED_MISSING           = 0xa,
1867         NVME_SC_INVALID_NS              = 0xb,
1868         NVME_SC_CMD_SEQ_ERROR           = 0xc,
1869         NVME_SC_SGL_INVALID_LAST        = 0xd,
1870         NVME_SC_SGL_INVALID_COUNT       = 0xe,
1871         NVME_SC_SGL_INVALID_DATA        = 0xf,
1872         NVME_SC_SGL_INVALID_METADATA    = 0x10,
1873         NVME_SC_SGL_INVALID_TYPE        = 0x11,
1874         NVME_SC_CMB_INVALID_USE         = 0x12,
1875         NVME_SC_PRP_INVALID_OFFSET      = 0x13,
1876         NVME_SC_ATOMIC_WU_EXCEEDED      = 0x14,
1877         NVME_SC_OP_DENIED               = 0x15,
1878         NVME_SC_SGL_INVALID_OFFSET      = 0x16,
1879         NVME_SC_RESERVED                = 0x17,
1880         NVME_SC_HOST_ID_INCONSIST       = 0x18,
1881         NVME_SC_KA_TIMEOUT_EXPIRED      = 0x19,
1882         NVME_SC_KA_TIMEOUT_INVALID      = 0x1A,
1883         NVME_SC_ABORTED_PREEMPT_ABORT   = 0x1B,
1884         NVME_SC_SANITIZE_FAILED         = 0x1C,
1885         NVME_SC_SANITIZE_IN_PROGRESS    = 0x1D,
1886         NVME_SC_SGL_INVALID_GRANULARITY = 0x1E,
1887         NVME_SC_CMD_NOT_SUP_CMB_QUEUE   = 0x1F,
1888         NVME_SC_NS_WRITE_PROTECTED      = 0x20,
1889         NVME_SC_CMD_INTERRUPTED         = 0x21,
1890         NVME_SC_TRANSIENT_TR_ERR        = 0x22,
1891         NVME_SC_ADMIN_COMMAND_MEDIA_NOT_READY = 0x24,
1892         NVME_SC_INVALID_IO_CMD_SET      = 0x2C,
1893
1894         NVME_SC_LBA_RANGE               = 0x80,
1895         NVME_SC_CAP_EXCEEDED            = 0x81,
1896         NVME_SC_NS_NOT_READY            = 0x82,
1897         NVME_SC_RESERVATION_CONFLICT    = 0x83,
1898         NVME_SC_FORMAT_IN_PROGRESS      = 0x84,
1899
1900         /*
1901          * Command Specific Status:
1902          */
1903         NVME_SC_CQ_INVALID              = 0x100,
1904         NVME_SC_QID_INVALID             = 0x101,
1905         NVME_SC_QUEUE_SIZE              = 0x102,
1906         NVME_SC_ABORT_LIMIT             = 0x103,
1907         NVME_SC_ABORT_MISSING           = 0x104,
1908         NVME_SC_ASYNC_LIMIT             = 0x105,
1909         NVME_SC_FIRMWARE_SLOT           = 0x106,
1910         NVME_SC_FIRMWARE_IMAGE          = 0x107,
1911         NVME_SC_INVALID_VECTOR          = 0x108,
1912         NVME_SC_INVALID_LOG_PAGE        = 0x109,
1913         NVME_SC_INVALID_FORMAT          = 0x10a,
1914         NVME_SC_FW_NEEDS_CONV_RESET     = 0x10b,
1915         NVME_SC_INVALID_QUEUE           = 0x10c,
1916         NVME_SC_FEATURE_NOT_SAVEABLE    = 0x10d,
1917         NVME_SC_FEATURE_NOT_CHANGEABLE  = 0x10e,
1918         NVME_SC_FEATURE_NOT_PER_NS      = 0x10f,
1919         NVME_SC_FW_NEEDS_SUBSYS_RESET   = 0x110,
1920         NVME_SC_FW_NEEDS_RESET          = 0x111,
1921         NVME_SC_FW_NEEDS_MAX_TIME       = 0x112,
1922         NVME_SC_FW_ACTIVATE_PROHIBITED  = 0x113,
1923         NVME_SC_OVERLAPPING_RANGE       = 0x114,
1924         NVME_SC_NS_INSUFFICIENT_CAP     = 0x115,
1925         NVME_SC_NS_ID_UNAVAILABLE       = 0x116,
1926         NVME_SC_NS_ALREADY_ATTACHED     = 0x118,
1927         NVME_SC_NS_IS_PRIVATE           = 0x119,
1928         NVME_SC_NS_NOT_ATTACHED         = 0x11a,
1929         NVME_SC_THIN_PROV_NOT_SUPP      = 0x11b,
1930         NVME_SC_CTRL_LIST_INVALID       = 0x11c,
1931         NVME_SC_SELT_TEST_IN_PROGRESS   = 0x11d,
1932         NVME_SC_BP_WRITE_PROHIBITED     = 0x11e,
1933         NVME_SC_CTRL_ID_INVALID         = 0x11f,
1934         NVME_SC_SEC_CTRL_STATE_INVALID  = 0x120,
1935         NVME_SC_CTRL_RES_NUM_INVALID    = 0x121,
1936         NVME_SC_RES_ID_INVALID          = 0x122,
1937         NVME_SC_PMR_SAN_PROHIBITED      = 0x123,
1938         NVME_SC_ANA_GROUP_ID_INVALID    = 0x124,
1939         NVME_SC_ANA_ATTACH_FAILED       = 0x125,
1940
1941         /*
1942          * I/O Command Set Specific - NVM commands:
1943          */
1944         NVME_SC_BAD_ATTRIBUTES          = 0x180,
1945         NVME_SC_INVALID_PI              = 0x181,
1946         NVME_SC_READ_ONLY               = 0x182,
1947         NVME_SC_ONCS_NOT_SUPPORTED      = 0x183,
1948
1949         /*
1950          * I/O Command Set Specific - Fabrics commands:
1951          */
1952         NVME_SC_CONNECT_FORMAT          = 0x180,
1953         NVME_SC_CONNECT_CTRL_BUSY       = 0x181,
1954         NVME_SC_CONNECT_INVALID_PARAM   = 0x182,
1955         NVME_SC_CONNECT_RESTART_DISC    = 0x183,
1956         NVME_SC_CONNECT_INVALID_HOST    = 0x184,
1957
1958         NVME_SC_DISCOVERY_RESTART       = 0x190,
1959         NVME_SC_AUTH_REQUIRED           = 0x191,
1960
1961         /*
1962          * I/O Command Set Specific - Zoned commands:
1963          */
1964         NVME_SC_ZONE_BOUNDARY_ERROR     = 0x1b8,
1965         NVME_SC_ZONE_FULL               = 0x1b9,
1966         NVME_SC_ZONE_READ_ONLY          = 0x1ba,
1967         NVME_SC_ZONE_OFFLINE            = 0x1bb,
1968         NVME_SC_ZONE_INVALID_WRITE      = 0x1bc,
1969         NVME_SC_ZONE_TOO_MANY_ACTIVE    = 0x1bd,
1970         NVME_SC_ZONE_TOO_MANY_OPEN      = 0x1be,
1971         NVME_SC_ZONE_INVALID_TRANSITION = 0x1bf,
1972
1973         /*
1974          * Media and Data Integrity Errors:
1975          */
1976         NVME_SC_WRITE_FAULT             = 0x280,
1977         NVME_SC_READ_ERROR              = 0x281,
1978         NVME_SC_GUARD_CHECK             = 0x282,
1979         NVME_SC_APPTAG_CHECK            = 0x283,
1980         NVME_SC_REFTAG_CHECK            = 0x284,
1981         NVME_SC_COMPARE_FAILED          = 0x285,
1982         NVME_SC_ACCESS_DENIED           = 0x286,
1983         NVME_SC_UNWRITTEN_BLOCK         = 0x287,
1984
1985         /*
1986          * Path-related Errors:
1987          */
1988         NVME_SC_INTERNAL_PATH_ERROR     = 0x300,
1989         NVME_SC_ANA_PERSISTENT_LOSS     = 0x301,
1990         NVME_SC_ANA_INACCESSIBLE        = 0x302,
1991         NVME_SC_ANA_TRANSITION          = 0x303,
1992         NVME_SC_CTRL_PATH_ERROR         = 0x360,
1993         NVME_SC_HOST_PATH_ERROR         = 0x370,
1994         NVME_SC_HOST_ABORTED_CMD        = 0x371,
1995
1996         NVME_SC_CRD                     = 0x1800,
1997         NVME_SC_MORE                    = 0x2000,
1998         NVME_SC_DNR                     = 0x4000,
1999 };
2000
2001 struct nvme_completion {
2002         /*
2003          * Used by Admin and Fabrics commands to return data:
2004          */
2005         union nvme_result {
2006                 __le16  u16;
2007                 __le32  u32;
2008                 __le64  u64;
2009         } result;
2010         __le16  sq_head;        /* how much of this queue may be reclaimed */
2011         __le16  sq_id;          /* submission queue that generated this entry */
2012         __u16   command_id;     /* of the command which completed */
2013         __le16  status;         /* did the command fail, and if so, why? */
2014 };
2015
2016 #define NVME_VS(major, minor, tertiary) \
2017         (((major) << 16) | ((minor) << 8) | (tertiary))
2018
2019 #define NVME_MAJOR(ver)         ((ver) >> 16)
2020 #define NVME_MINOR(ver)         (((ver) >> 8) & 0xff)
2021 #define NVME_TERTIARY(ver)      ((ver) & 0xff)
2022
2023 #endif /* _LINUX_NVME_H */