hw/nvme/ns.c

   1 /*
   2  * QEMU NVM Express Virtual Namespace
   3  *
   4  * Copyright (c) 2019 CNEX Labs
   5  * Copyright (c) 2020 Samsung Electronics
   6  *
   7  * Authors:
   8  *  Klaus Jensen      <k.jensen@samsung.com>
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2. See the
  11  * COPYING file in the top-level directory.
  12  *
  13  */
  14
  15 #include "qemu/osdep.h"
  16 #include "qemu/units.h"
  17 #include "qemu/error-report.h"
  18 #include "qapi/error.h"
  19 #include "sysemu/sysemu.h"
  20 #include "sysemu/block-backend.h"
  21
  22 #include "nvme.h"
  23 #include "trace.h"
  24
  25 #define MIN_DISCARD_GRANULARITY (4 * KiB)
  26 #define NVME_DEFAULT_ZONE_SIZE   (128 * MiB)
  27
  28 void nvme_ns_init_format(NvmeNamespace *ns)
  29 {
  30     NvmeIdNs *id_ns = &ns->id_ns;
  31     BlockDriverInfo bdi;
  32     int npdg, nlbas, ret;
  33
  34     ns->lbaf = id_ns->lbaf[NVME_ID_NS_FLBAS_INDEX(id_ns->flbas)];
  35     ns->lbasz = 1 << ns->lbaf.ds;
  36
  37     nlbas = ns->size / (ns->lbasz + ns->lbaf.ms);
  38
  39     id_ns->nsze = cpu_to_le64(nlbas);
  40
  41     /* no thin provisioning */
  42     id_ns->ncap = id_ns->nsze;
  43     id_ns->nuse = id_ns->ncap;
  44
  45     ns->moff = (int64_t)nlbas << ns->lbaf.ds;
  46
  47     npdg = ns->blkconf.discard_granularity / ns->lbasz;
  48
  49     ret = bdrv_get_info(blk_bs(ns->blkconf.blk), &bdi);
  50     if (ret >= 0 && bdi.cluster_size > ns->blkconf.discard_granularity) {
  51         npdg = bdi.cluster_size / ns->lbasz;
  52     }
  53
  54     id_ns->npda = id_ns->npdg = npdg - 1;
  55 }
  56
  57 static int nvme_ns_init(NvmeNamespace *ns, Error **errp)
  58 {
  59     static uint64_t ns_count;
  60     NvmeIdNs *id_ns = &ns->id_ns;
  61     NvmeIdNsNvm *id_ns_nvm = &ns->id_ns_nvm;
  62     uint8_t ds;
  63     uint16_t ms;
  64     int i;
  65
  66     ns->csi = NVME_CSI_NVM;
  67     ns->status = 0x0;
  68
  69     ns->id_ns.dlfeat = 0x1;
  70
  71     /* support DULBE and I/O optimization fields */
  72     id_ns->nsfeat |= (0x4 | 0x10);
  73
  74     if (ns->params.shared) {
  75         id_ns->nmic |= NVME_NMIC_NS_SHARED;
  76     }
  77
  78     /* Substitute a missing EUI-64 by an autogenerated one */
  79     ++ns_count;
  80     if (!ns->params.eui64 && ns->params.eui64_default) {
  81         ns->params.eui64 = ns_count + NVME_EUI64_DEFAULT;
  82     }
  83
  84     /* simple copy */
  85     id_ns->mssrl = cpu_to_le16(ns->params.mssrl);
  86     id_ns->mcl = cpu_to_le32(ns->params.mcl);
  87     id_ns->msrc = ns->params.msrc;
  88     id_ns->eui64 = cpu_to_be64(ns->params.eui64);
  89
  90     ds = 31 - clz32(ns->blkconf.logical_block_size);
  91     ms = ns->params.ms;
  92
  93     id_ns->mc = NVME_ID_NS_MC_EXTENDED | NVME_ID_NS_MC_SEPARATE;
  94
  95     if (ms && ns->params.mset) {
  96         id_ns->flbas |= NVME_ID_NS_FLBAS_EXTENDED;
  97     }
  98
  99     id_ns->dpc = 0x1f;
 100     id_ns->dps = ns->params.pi;
 101     if (ns->params.pi && ns->params.pil) {
 102         id_ns->dps |= NVME_ID_NS_DPS_FIRST_EIGHT;
 103     }
 104
 105     ns->pif = ns->params.pif;
 106
 107     static const NvmeLBAF lbaf[16] = {
 108         [0] = { .ds =  9           },
 109         [1] = { .ds =  9, .ms =  8 },
 110         [2] = { .ds =  9, .ms = 16 },
 111         [3] = { .ds =  9, .ms = 64 },
 112         [4] = { .ds = 12           },
 113         [5] = { .ds = 12, .ms =  8 },
 114         [6] = { .ds = 12, .ms = 16 },
 115         [7] = { .ds = 12, .ms = 64 },
 116     };
 117
 118     ns->nlbaf = 8;
 119
 120     memcpy(&id_ns->lbaf, &lbaf, sizeof(lbaf));
 121
 122     for (i = 0; i < ns->nlbaf; i++) {
 123         NvmeLBAF *lbaf = &id_ns->lbaf[i];
 124         if (lbaf->ds == ds) {
 125             if (lbaf->ms == ms) {
 126                 id_ns->flbas |= i;
 127                 goto lbaf_found;
 128             }
 129         }
 130     }
 131
 132     /* add non-standard lba format */
 133     id_ns->lbaf[ns->nlbaf].ds = ds;
 134     id_ns->lbaf[ns->nlbaf].ms = ms;
 135     ns->nlbaf++;
 136
 137     id_ns->flbas |= i;
 138
 139
 140 lbaf_found:
 141     id_ns_nvm->elbaf[i] = (ns->pif & 0x3) << 7;
 142     id_ns->nlbaf = ns->nlbaf - 1;
 143     nvme_ns_init_format(ns);
 144
 145     return 0;
 146 }
 147
 148 static int nvme_ns_init_blk(NvmeNamespace *ns, Error **errp)
 149 {
 150     bool read_only;
 151
 152     if (!blkconf_blocksizes(&ns->blkconf, errp)) {
 153         return -1;
 154     }
 155
 156     read_only = !blk_supports_write_perm(ns->blkconf.blk);
 157     if (!blkconf_apply_backend_options(&ns->blkconf, read_only, false, errp)) {
 158         return -1;
 159     }
 160
 161     if (ns->blkconf.discard_granularity == -1) {
 162         ns->blkconf.discard_granularity =
 163             MAX(ns->blkconf.logical_block_size, MIN_DISCARD_GRANULARITY);
 164     }
 165
 166     ns->size = blk_getlength(ns->blkconf.blk);
 167     if (ns->size < 0) {
 168         error_setg_errno(errp, -ns->size, "could not get blockdev size");
 169         return -1;
 170     }
 171
 172     return 0;
 173 }
 174
 175 static int nvme_ns_zoned_check_calc_geometry(NvmeNamespace *ns, Error **errp)
 176 {
 177     uint64_t zone_size, zone_cap;
 178
 179     /* Make sure that the values of ZNS properties are sane */
 180     if (ns->params.zone_size_bs) {
 181         zone_size = ns->params.zone_size_bs;
 182     } else {
 183         zone_size = NVME_DEFAULT_ZONE_SIZE;
 184     }
 185     if (ns->params.zone_cap_bs) {
 186         zone_cap = ns->params.zone_cap_bs;
 187     } else {
 188         zone_cap = zone_size;
 189     }
 190     if (zone_cap > zone_size) {
 191         error_setg(errp, "zone capacity %"PRIu64"B exceeds "
 192                    "zone size %"PRIu64"B", zone_cap, zone_size);
 193         return -1;
 194     }
 195     if (zone_size < ns->lbasz) {
 196         error_setg(errp, "zone size %"PRIu64"B too small, "
 197                    "must be at least %zuB", zone_size, ns->lbasz);
 198         return -1;
 199     }
 200     if (zone_cap < ns->lbasz) {
 201         error_setg(errp, "zone capacity %"PRIu64"B too small, "
 202                    "must be at least %zuB", zone_cap, ns->lbasz);
 203         return -1;
 204     }
 205
 206     /*
 207      * Save the main zone geometry values to avoid
 208      * calculating them later again.
 209      */
 210     ns->zone_size = zone_size / ns->lbasz;
 211     ns->zone_capacity = zone_cap / ns->lbasz;
 212     ns->num_zones = le64_to_cpu(ns->id_ns.nsze) / ns->zone_size;
 213
 214     /* Do a few more sanity checks of ZNS properties */
 215     if (!ns->num_zones) {
 216         error_setg(errp,
 217                    "insufficient drive capacity, must be at least the size "
 218                    "of one zone (%"PRIu64"B)", zone_size);
 219         return -1;
 220     }
 221
 222     return 0;
 223 }
 224
 225 static void nvme_ns_zoned_init_state(NvmeNamespace *ns)
 226 {
 227     uint64_t start = 0, zone_size = ns->zone_size;
 228     uint64_t capacity = ns->num_zones * zone_size;
 229     NvmeZone *zone;
 230     int i;
 231
 232     ns->zone_array = g_new0(NvmeZone, ns->num_zones);
 233     if (ns->params.zd_extension_size) {
 234         ns->zd_extensions = g_malloc0(ns->params.zd_extension_size *
 235                                       ns->num_zones);
 236     }
 237
 238     QTAILQ_INIT(&ns->exp_open_zones);
 239     QTAILQ_INIT(&ns->imp_open_zones);
 240     QTAILQ_INIT(&ns->closed_zones);
 241     QTAILQ_INIT(&ns->full_zones);
 242
 243     zone = ns->zone_array;
 244     for (i = 0; i < ns->num_zones; i++, zone++) {
 245         if (start + zone_size > capacity) {
 246             zone_size = capacity - start;
 247         }
 248         zone->d.zt = NVME_ZONE_TYPE_SEQ_WRITE;
 249         nvme_set_zone_state(zone, NVME_ZONE_STATE_EMPTY);
 250         zone->d.za = 0;
 251         zone->d.zcap = ns->zone_capacity;
 252         zone->d.zslba = start;
 253         zone->d.wp = start;
 254         zone->w_ptr = start;
 255         start += zone_size;
 256     }
 257
 258     ns->zone_size_log2 = 0;
 259     if (is_power_of_2(ns->zone_size)) {
 260         ns->zone_size_log2 = 63 - clz64(ns->zone_size);
 261     }
 262 }
 263
 264 static void nvme_ns_init_zoned(NvmeNamespace *ns)
 265 {
 266     NvmeIdNsZoned *id_ns_z;
 267     int i;
 268
 269     nvme_ns_zoned_init_state(ns);
 270
 271     id_ns_z = g_malloc0(sizeof(NvmeIdNsZoned));
 272
 273     /* MAR/MOR are zeroes-based, FFFFFFFFFh means no limit */
 274     id_ns_z->mar = cpu_to_le32(ns->params.max_active_zones - 1);
 275     id_ns_z->mor = cpu_to_le32(ns->params.max_open_zones - 1);
 276     id_ns_z->zoc = 0;
 277     id_ns_z->ozcs = ns->params.cross_zone_read ?
 278         NVME_ID_NS_ZONED_OZCS_RAZB : 0x00;
 279
 280     for (i = 0; i <= ns->id_ns.nlbaf; i++) {
 281         id_ns_z->lbafe[i].zsze = cpu_to_le64(ns->zone_size);
 282         id_ns_z->lbafe[i].zdes =
 283             ns->params.zd_extension_size >> 6; /* Units of 64B */
 284     }
 285
 286     if (ns->params.zrwas) {
 287         ns->zns.numzrwa = ns->params.numzrwa ?
 288             ns->params.numzrwa : ns->num_zones;
 289
 290         ns->zns.zrwas = ns->params.zrwas >> ns->lbaf.ds;
 291         ns->zns.zrwafg = ns->params.zrwafg >> ns->lbaf.ds;
 292
 293         id_ns_z->ozcs |= NVME_ID_NS_ZONED_OZCS_ZRWASUP;
 294         id_ns_z->zrwacap = NVME_ID_NS_ZONED_ZRWACAP_EXPFLUSHSUP;
 295
 296         id_ns_z->numzrwa = cpu_to_le32(ns->params.numzrwa);
 297         id_ns_z->zrwas = cpu_to_le16(ns->zns.zrwas);
 298         id_ns_z->zrwafg = cpu_to_le16(ns->zns.zrwafg);
 299     }
 300
 301     id_ns_z->ozcs = cpu_to_le16(id_ns_z->ozcs);
 302
 303     ns->csi = NVME_CSI_ZONED;
 304     ns->id_ns.nsze = cpu_to_le64(ns->num_zones * ns->zone_size);
 305     ns->id_ns.ncap = ns->id_ns.nsze;
 306     ns->id_ns.nuse = ns->id_ns.ncap;
 307
 308     /*
 309      * The device uses the BDRV_BLOCK_ZERO flag to determine the "deallocated"
 310      * status of logical blocks. Since the spec defines that logical blocks
 311      * SHALL be deallocated when then zone is in the Empty or Offline states,
 312      * we can only support DULBE if the zone size is a multiple of the
 313      * calculated NPDG.
 314      */
 315     if (ns->zone_size % (ns->id_ns.npdg + 1)) {
 316         warn_report("the zone size (%"PRIu64" blocks) is not a multiple of "
 317                     "the calculated deallocation granularity (%d blocks); "
 318                     "DULBE support disabled",
 319                     ns->zone_size, ns->id_ns.npdg + 1);
 320
 321         ns->id_ns.nsfeat &= ~0x4;
 322     }
 323
 324     ns->id_ns_zoned = id_ns_z;
 325 }
 326
 327 static void nvme_clear_zone(NvmeNamespace *ns, NvmeZone *zone)
 328 {
 329     uint8_t state;
 330
 331     zone->w_ptr = zone->d.wp;
 332     state = nvme_get_zone_state(zone);
 333     if (zone->d.wp != zone->d.zslba ||
 334         (zone->d.za & NVME_ZA_ZD_EXT_VALID)) {
 335         if (state != NVME_ZONE_STATE_CLOSED) {
 336             trace_pci_nvme_clear_ns_close(state, zone->d.zslba);
 337             nvme_set_zone_state(zone, NVME_ZONE_STATE_CLOSED);
 338         }
 339         nvme_aor_inc_active(ns);
 340         QTAILQ_INSERT_HEAD(&ns->closed_zones, zone, entry);
 341     } else {
 342         trace_pci_nvme_clear_ns_reset(state, zone->d.zslba);
 343         if (zone->d.za & NVME_ZA_ZRWA_VALID) {
 344             zone->d.za &= ~NVME_ZA_ZRWA_VALID;
 345             ns->zns.numzrwa++;
 346         }
 347         nvme_set_zone_state(zone, NVME_ZONE_STATE_EMPTY);
 348     }
 349 }
 350
 351 /*
 352  * Close all the zones that are currently open.
 353  */
 354 static void nvme_zoned_ns_shutdown(NvmeNamespace *ns)
 355 {
 356     NvmeZone *zone, *next;
 357
 358     QTAILQ_FOREACH_SAFE(zone, &ns->closed_zones, entry, next) {
 359         QTAILQ_REMOVE(&ns->closed_zones, zone, entry);
 360         nvme_aor_dec_active(ns);
 361         nvme_clear_zone(ns, zone);
 362     }
 363     QTAILQ_FOREACH_SAFE(zone, &ns->imp_open_zones, entry, next) {
 364         QTAILQ_REMOVE(&ns->imp_open_zones, zone, entry);
 365         nvme_aor_dec_open(ns);
 366         nvme_aor_dec_active(ns);
 367         nvme_clear_zone(ns, zone);
 368     }
 369     QTAILQ_FOREACH_SAFE(zone, &ns->exp_open_zones, entry, next) {
 370         QTAILQ_REMOVE(&ns->exp_open_zones, zone, entry);
 371         nvme_aor_dec_open(ns);
 372         nvme_aor_dec_active(ns);
 373         nvme_clear_zone(ns, zone);
 374     }
 375
 376     assert(ns->nr_open_zones == 0);
 377 }
 378
 379 static int nvme_ns_check_constraints(NvmeNamespace *ns, Error **errp)
 380 {
 381     unsigned int pi_size;
 382
 383     if (!ns->blkconf.blk) {
 384         error_setg(errp, "block backend not configured");
 385         return -1;
 386     }
 387
 388     if (ns->params.pi) {
 389         if (ns->params.pi > NVME_ID_NS_DPS_TYPE_3) {
 390             error_setg(errp, "invalid 'pi' value");
 391             return -1;
 392         }
 393
 394         switch (ns->params.pif) {
 395         case NVME_PI_GUARD_16:
 396             pi_size = 8;
 397             break;
 398         case NVME_PI_GUARD_64:
 399             pi_size = 16;
 400             break;
 401         default:
 402             error_setg(errp, "invalid 'pif'");
 403             return -1;
 404         }
 405
 406         if (ns->params.ms < pi_size) {
 407             error_setg(errp, "at least %u bytes of metadata required to "
 408                        "enable protection information", pi_size);
 409             return -1;
 410         }
 411     }
 412
 413     if (ns->params.nsid > NVME_MAX_NAMESPACES) {
 414         error_setg(errp, "invalid namespace id (must be between 0 and %d)",
 415                    NVME_MAX_NAMESPACES);
 416         return -1;
 417     }
 418
 419     if (ns->params.zoned) {
 420         if (ns->params.max_active_zones) {
 421             if (ns->params.max_open_zones > ns->params.max_active_zones) {
 422                 error_setg(errp, "max_open_zones (%u) exceeds "
 423                            "max_active_zones (%u)", ns->params.max_open_zones,
 424                            ns->params.max_active_zones);
 425                 return -1;
 426             }
 427
 428             if (!ns->params.max_open_zones) {
 429                 ns->params.max_open_zones = ns->params.max_active_zones;
 430             }
 431         }
 432
 433         if (ns->params.zd_extension_size) {
 434             if (ns->params.zd_extension_size & 0x3f) {
 435                 error_setg(errp, "zone descriptor extension size must be a "
 436                            "multiple of 64B");
 437                 return -1;
 438             }
 439             if ((ns->params.zd_extension_size >> 6) > 0xff) {
 440                 error_setg(errp,
 441                            "zone descriptor extension size is too large");
 442                 return -1;
 443             }
 444         }
 445
 446         if (ns->params.zrwas) {
 447             if (ns->params.zrwas % ns->blkconf.logical_block_size) {
 448                 error_setg(errp, "zone random write area size (zoned.zrwas "
 449                            "%"PRIu64") must be a multiple of the logical "
 450                            "block size (logical_block_size %"PRIu32")",
 451                            ns->params.zrwas, ns->blkconf.logical_block_size);
 452                 return -1;
 453             }
 454
 455             if (ns->params.zrwafg == -1) {
 456                 ns->params.zrwafg = ns->blkconf.logical_block_size;
 457             }
 458
 459             if (ns->params.zrwas % ns->params.zrwafg) {
 460                 error_setg(errp, "zone random write area size (zoned.zrwas "
 461                            "%"PRIu64") must be a multiple of the zone random "
 462                            "write area flush granularity (zoned.zrwafg, "
 463                            "%"PRIu64")", ns->params.zrwas, ns->params.zrwafg);
 464                 return -1;
 465             }
 466
 467             if (ns->params.max_active_zones) {
 468                 if (ns->params.numzrwa > ns->params.max_active_zones) {
 469                     error_setg(errp, "number of zone random write area "
 470                                "resources (zoned.numzrwa, %d) must be less "
 471                                "than or equal to maximum active resources "
 472                                "(zoned.max_active_zones, %d)",
 473                                ns->params.numzrwa,
 474                                ns->params.max_active_zones);
 475                     return -1;
 476                 }
 477             }
 478         }
 479     }
 480
 481     return 0;
 482 }
 483
 484 int nvme_ns_setup(NvmeNamespace *ns, Error **errp)
 485 {
 486     if (nvme_ns_check_constraints(ns, errp)) {
 487         return -1;
 488     }
 489
 490     if (nvme_ns_init_blk(ns, errp)) {
 491         return -1;
 492     }
 493
 494     if (nvme_ns_init(ns, errp)) {
 495         return -1;
 496     }
 497     if (ns->params.zoned) {
 498         if (nvme_ns_zoned_check_calc_geometry(ns, errp) != 0) {
 499             return -1;
 500         }
 501         nvme_ns_init_zoned(ns);
 502     }
 503
 504     return 0;
 505 }
 506
 507 void nvme_ns_drain(NvmeNamespace *ns)
 508 {
 509     blk_drain(ns->blkconf.blk);
 510 }
 511
 512 void nvme_ns_shutdown(NvmeNamespace *ns)
 513 {
 514     blk_flush(ns->blkconf.blk);
 515     if (ns->params.zoned) {
 516         nvme_zoned_ns_shutdown(ns);
 517     }
 518 }
 519
 520 void nvme_ns_cleanup(NvmeNamespace *ns)
 521 {
 522     if (ns->params.zoned) {
 523         g_free(ns->id_ns_zoned);
 524         g_free(ns->zone_array);
 525         g_free(ns->zd_extensions);
 526     }
 527 }
 528
 529 static void nvme_ns_unrealize(DeviceState *dev)
 530 {
 531     NvmeNamespace *ns = NVME_NS(dev);
 532
 533     nvme_ns_drain(ns);
 534     nvme_ns_shutdown(ns);
 535     nvme_ns_cleanup(ns);
 536 }
 537
 538 static void nvme_ns_realize(DeviceState *dev, Error **errp)
 539 {
 540     NvmeNamespace *ns = NVME_NS(dev);
 541     BusState *s = qdev_get_parent_bus(dev);
 542     NvmeCtrl *n = NVME(s->parent);
 543     NvmeSubsystem *subsys = n->subsys;
 544     uint32_t nsid = ns->params.nsid;
 545     int i;
 546
 547     if (!n->subsys) {
 548         if (ns->params.detached) {
 549             error_setg(errp, "detached requires that the nvme device is "
 550                        "linked to an nvme-subsys device");
 551             return;
 552         }
 553     } else {
 554         /*
 555          * If this namespace belongs to a subsystem (through a link on the
 556          * controller device), reparent the device.
 557          */
 558         if (!qdev_set_parent_bus(dev, &subsys->bus.parent_bus, errp)) {
 559             return;
 560         }
 561     }
 562
 563     if (nvme_ns_setup(ns, errp)) {
 564         return;
 565     }
 566
 567     if (!nsid) {
 568         for (i = 1; i <= NVME_MAX_NAMESPACES; i++) {
 569             if (nvme_ns(n, i) || nvme_subsys_ns(subsys, i)) {
 570                 continue;
 571             }
 572
 573             nsid = ns->params.nsid = i;
 574             break;
 575         }
 576
 577         if (!nsid) {
 578             error_setg(errp, "no free namespace id");
 579             return;
 580         }
 581     } else {
 582         if (nvme_ns(n, nsid) || nvme_subsys_ns(subsys, nsid)) {
 583             error_setg(errp, "namespace id '%d' already allocated", nsid);
 584             return;
 585         }
 586     }
 587
 588     if (subsys) {
 589         subsys->namespaces[nsid] = ns;
 590
 591         if (ns->params.detached) {
 592             return;
 593         }
 594
 595         if (ns->params.shared) {
 596             for (i = 0; i < ARRAY_SIZE(subsys->ctrls); i++) {
 597                 NvmeCtrl *ctrl = subsys->ctrls[i];
 598
 599                 if (ctrl) {
 600                     nvme_attach_ns(ctrl, ns);
 601                 }
 602             }
 603
 604             return;
 605         }
 606     }
 607
 608     nvme_attach_ns(n, ns);
 609 }
 610
 611 static Property nvme_ns_props[] = {
 612     DEFINE_BLOCK_PROPERTIES(NvmeNamespace, blkconf),
 613     DEFINE_PROP_BOOL("detached", NvmeNamespace, params.detached, false),
 614     DEFINE_PROP_BOOL("shared", NvmeNamespace, params.shared, true),
 615     DEFINE_PROP_UINT32("nsid", NvmeNamespace, params.nsid, 0),
 616     DEFINE_PROP_UUID("uuid", NvmeNamespace, params.uuid),
 617     DEFINE_PROP_UINT64("eui64", NvmeNamespace, params.eui64, 0),
 618     DEFINE_PROP_UINT16("ms", NvmeNamespace, params.ms, 0),
 619     DEFINE_PROP_UINT8("mset", NvmeNamespace, params.mset, 0),
 620     DEFINE_PROP_UINT8("pi", NvmeNamespace, params.pi, 0),
 621     DEFINE_PROP_UINT8("pil", NvmeNamespace, params.pil, 0),
 622     DEFINE_PROP_UINT8("pif", NvmeNamespace, params.pif, 0),
 623     DEFINE_PROP_UINT16("mssrl", NvmeNamespace, params.mssrl, 128),
 624     DEFINE_PROP_UINT32("mcl", NvmeNamespace, params.mcl, 128),
 625     DEFINE_PROP_UINT8("msrc", NvmeNamespace, params.msrc, 127),
 626     DEFINE_PROP_BOOL("zoned", NvmeNamespace, params.zoned, false),
 627     DEFINE_PROP_SIZE("zoned.zone_size", NvmeNamespace, params.zone_size_bs,
 628                      NVME_DEFAULT_ZONE_SIZE),
 629     DEFINE_PROP_SIZE("zoned.zone_capacity", NvmeNamespace, params.zone_cap_bs,
 630                      0),
 631     DEFINE_PROP_BOOL("zoned.cross_read", NvmeNamespace,
 632                      params.cross_zone_read, false),
 633     DEFINE_PROP_UINT32("zoned.max_active", NvmeNamespace,
 634                        params.max_active_zones, 0),
 635     DEFINE_PROP_UINT32("zoned.max_open", NvmeNamespace,
 636                        params.max_open_zones, 0),
 637     DEFINE_PROP_UINT32("zoned.descr_ext_size", NvmeNamespace,
 638                        params.zd_extension_size, 0),
 639     DEFINE_PROP_UINT32("zoned.numzrwa", NvmeNamespace, params.numzrwa, 0),
 640     DEFINE_PROP_SIZE("zoned.zrwas", NvmeNamespace, params.zrwas, 0),
 641     DEFINE_PROP_SIZE("zoned.zrwafg", NvmeNamespace, params.zrwafg, -1),
 642     DEFINE_PROP_BOOL("eui64-default", NvmeNamespace, params.eui64_default,
 643                      true),
 644     DEFINE_PROP_END_OF_LIST(),
 645 };
 646
 647 static void nvme_ns_class_init(ObjectClass *oc, void *data)
 648 {
 649     DeviceClass *dc = DEVICE_CLASS(oc);
 650
 651     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
 652
 653     dc->bus_type = TYPE_NVME_BUS;
 654     dc->realize = nvme_ns_realize;
 655     dc->unrealize = nvme_ns_unrealize;
 656     device_class_set_props(dc, nvme_ns_props);
 657     dc->desc = "Virtual NVMe namespace";
 658 }
 659
 660 static void nvme_ns_instance_init(Object *obj)
 661 {
 662     NvmeNamespace *ns = NVME_NS(obj);
 663     char *bootindex = g_strdup_printf("/namespace@%d,0", ns->params.nsid);
 664
 665     device_add_bootindex_property(obj, &ns->bootindex, "bootindex",
 666                                   bootindex, DEVICE(obj));
 667
 668     g_free(bootindex);
 669 }
 670
 671 static const TypeInfo nvme_ns_info = {
 672     .name = TYPE_NVME_NS,
 673     .parent = TYPE_DEVICE,
 674     .class_init = nvme_ns_class_init,
 675     .instance_size = sizeof(NvmeNamespace),
 676     .instance_init = nvme_ns_instance_init,
 677 };
 678
 679 static void nvme_ns_register_types(void)
 680 {
 681     type_register_static(&nvme_ns_info);
 682 }
 683
 684 type_init(nvme_ns_register_types)