1 /* 2 * QEMU NVM Express Controller 3 * 4 * Copyright (c) 2012, Intel Corporation 5 * 6 * Written by Keith Busch <keith.busch@intel.com> 7 * 8 * This code is licensed under the GNU GPL v2 or later. 9 */ 10 11 /** 12 * Reference Specs: http://www.nvmexpress.org, 1.4, 1.3, 1.2, 1.1, 1.0e 13 * 14 * https://nvmexpress.org/developers/nvme-specification/ 15 * 16 * 17 * Notes on coding style 18 * --------------------- 19 * While QEMU coding style prefers lowercase hexadecimals in constants, the 20 * NVMe subsystem use thes format from the NVMe specifications in the comments 21 * (i.e. 'h' suffix instead of '0x' prefix). 22 * 23 * Usage 24 * ----- 25 * See docs/system/nvme.rst for extensive documentation. 26 * 27 * Add options: 28 * -drive file=<file>,if=none,id=<drive_id> 29 * -device nvme-subsys,id=<subsys_id>,nqn=<nqn_id> 30 * -device nvme,serial=<serial>,id=<bus_name>, \ 31 * cmb_size_mb=<cmb_size_mb[optional]>, \ 32 * [pmrdev=<mem_backend_file_id>,] \ 33 * max_ioqpairs=<N[optional]>, \ 34 * aerl=<N[optional]>,aer_max_queued=<N[optional]>, \ 35 * mdts=<N[optional]>,vsl=<N[optional]>, \ 36 * zoned.zasl=<N[optional]>, \ 37 * zoned.auto_transition=<on|off[optional]>, \ 38 * subsys=<subsys_id> 39 * -device nvme-ns,drive=<drive_id>,bus=<bus_name>,nsid=<nsid>,\ 40 * zoned=<true|false[optional]>, \ 41 * subsys=<subsys_id>,detached=<true|false[optional]> 42 * 43 * Note cmb_size_mb denotes size of CMB in MB. CMB is assumed to be at 44 * offset 0 in BAR2 and supports only WDS, RDS and SQS for now. By default, the 45 * device will use the "v1.4 CMB scheme" - use the `legacy-cmb` parameter to 46 * always enable the CMBLOC and CMBSZ registers (v1.3 behavior). 47 * 48 * Enabling pmr emulation can be achieved by pointing to memory-backend-file. 49 * For example: 50 * -object memory-backend-file,id=<mem_id>,share=on,mem-path=<file_path>, \ 51 * size=<size> .... -device nvme,...,pmrdev=<mem_id> 52 * 53 * The PMR will use BAR 4/5 exclusively. 54 * 55 * To place controller(s) and namespace(s) to a subsystem, then provide 56 * nvme-subsys device as above. 57 * 58 * nvme subsystem device parameters 59 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 60 * - `nqn` 61 * This parameter provides the `<nqn_id>` part of the string 62 * `nqn.2019-08.org.qemu:<nqn_id>` which will be reported in the SUBNQN field 63 * of subsystem controllers. Note that `<nqn_id>` should be unique per 64 * subsystem, but this is not enforced by QEMU. If not specified, it will 65 * default to the value of the `id` parameter (`<subsys_id>`). 66 * 67 * nvme device parameters 68 * ~~~~~~~~~~~~~~~~~~~~~~ 69 * - `subsys` 70 * Specifying this parameter attaches the controller to the subsystem and 71 * the SUBNQN field in the controller will report the NQN of the subsystem 72 * device. This also enables multi controller capability represented in 73 * Identify Controller data structure in CMIC (Controller Multi-path I/O and 74 * Namesapce Sharing Capabilities). 75 * 76 * - `aerl` 77 * The Asynchronous Event Request Limit (AERL). Indicates the maximum number 78 * of concurrently outstanding Asynchronous Event Request commands support 79 * by the controller. This is a 0's based value. 80 * 81 * - `aer_max_queued` 82 * This is the maximum number of events that the device will enqueue for 83 * completion when there are no outstanding AERs. When the maximum number of 84 * enqueued events are reached, subsequent events will be dropped. 85 * 86 * - `mdts` 87 * Indicates the maximum data transfer size for a command that transfers data 88 * between host-accessible memory and the controller. The value is specified 89 * as a power of two (2^n) and is in units of the minimum memory page size 90 * (CAP.MPSMIN). The default value is 7 (i.e. 512 KiB). 91 * 92 * - `vsl` 93 * Indicates the maximum data size limit for the Verify command. Like `mdts`, 94 * this value is specified as a power of two (2^n) and is in units of the 95 * minimum memory page size (CAP.MPSMIN). The default value is 7 (i.e. 512 96 * KiB). 97 * 98 * - `zoned.zasl` 99 * Indicates the maximum data transfer size for the Zone Append command. Like 100 * `mdts`, the value is specified as a power of two (2^n) and is in units of 101 * the minimum memory page size (CAP.MPSMIN). The default value is 0 (i.e. 102 * defaulting to the value of `mdts`). 103 * 104 * - `zoned.auto_transition` 105 * Indicates if zones in zone state implicitly opened can be automatically 106 * transitioned to zone state closed for resource management purposes. 107 * Defaults to 'on'. 108 * 109 * nvme namespace device parameters 110 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 111 * - `shared` 112 * When the parent nvme device (as defined explicitly by the 'bus' parameter 113 * or implicitly by the most recently defined NvmeBus) is linked to an 114 * nvme-subsys device, the namespace will be attached to all controllers in 115 * the subsystem. If set to 'off' (the default), the namespace will remain a 116 * private namespace and may only be attached to a single controller at a 117 * time. 118 * 119 * - `detached` 120 * This parameter is only valid together with the `subsys` parameter. If left 121 * at the default value (`false/off`), the namespace will be attached to all 122 * controllers in the NVMe subsystem at boot-up. If set to `true/on`, the 123 * namespace will be available in the subsystem but not attached to any 124 * controllers. 125 * 126 * Setting `zoned` to true selects Zoned Command Set at the namespace. 127 * In this case, the following namespace properties are available to configure 128 * zoned operation: 129 * zoned.zone_size=<zone size in bytes, default: 128MiB> 130 * The number may be followed by K, M, G as in kilo-, mega- or giga-. 131 * 132 * zoned.zone_capacity=<zone capacity in bytes, default: zone size> 133 * The value 0 (default) forces zone capacity to be the same as zone 134 * size. The value of this property may not exceed zone size. 135 * 136 * zoned.descr_ext_size=<zone descriptor extension size, default 0> 137 * This value needs to be specified in 64B units. If it is zero, 138 * namespace(s) will not support zone descriptor extensions. 139 * 140 * zoned.max_active=<Maximum Active Resources (zones), default: 0> 141 * The default value means there is no limit to the number of 142 * concurrently active zones. 143 * 144 * zoned.max_open=<Maximum Open Resources (zones), default: 0> 145 * The default value means there is no limit to the number of 146 * concurrently open zones. 147 * 148 * zoned.cross_read=<enable RAZB, default: false> 149 * Setting this property to true enables Read Across Zone Boundaries. 150 */ 151 152 #include "qemu/osdep.h" 153 #include "qemu/cutils.h" 154 #include "qemu/error-report.h" 155 #include "qemu/log.h" 156 #include "qemu/units.h" 157 #include "qapi/error.h" 158 #include "qapi/visitor.h" 159 #include "sysemu/sysemu.h" 160 #include "sysemu/block-backend.h" 161 #include "sysemu/hostmem.h" 162 #include "hw/pci/msix.h" 163 #include "migration/vmstate.h" 164 165 #include "nvme.h" 166 #include "trace.h" 167 168 #define NVME_MAX_IOQPAIRS 0xffff 169 #define NVME_DB_SIZE 4 170 #define NVME_SPEC_VER 0x00010400 171 #define NVME_CMB_BIR 2 172 #define NVME_PMR_BIR 4 173 #define NVME_TEMPERATURE 0x143 174 #define NVME_TEMPERATURE_WARNING 0x157 175 #define NVME_TEMPERATURE_CRITICAL 0x175 176 #define NVME_NUM_FW_SLOTS 1 177 #define NVME_DEFAULT_MAX_ZA_SIZE (128 * KiB) 178 179 #define NVME_GUEST_ERR(trace, fmt, ...) \ 180 do { \ 181 (trace_##trace)(__VA_ARGS__); \ 182 qemu_log_mask(LOG_GUEST_ERROR, #trace \ 183 " in %s: " fmt "\n", __func__, ## __VA_ARGS__); \ 184 } while (0) 185 186 static const bool nvme_feature_support[NVME_FID_MAX] = { 187 [NVME_ARBITRATION] = true, 188 [NVME_POWER_MANAGEMENT] = true, 189 [NVME_TEMPERATURE_THRESHOLD] = true, 190 [NVME_ERROR_RECOVERY] = true, 191 [NVME_VOLATILE_WRITE_CACHE] = true, 192 [NVME_NUMBER_OF_QUEUES] = true, 193 [NVME_INTERRUPT_COALESCING] = true, 194 [NVME_INTERRUPT_VECTOR_CONF] = true, 195 [NVME_WRITE_ATOMICITY] = true, 196 [NVME_ASYNCHRONOUS_EVENT_CONF] = true, 197 [NVME_TIMESTAMP] = true, 198 [NVME_COMMAND_SET_PROFILE] = true, 199 }; 200 201 static const uint32_t nvme_feature_cap[NVME_FID_MAX] = { 202 [NVME_TEMPERATURE_THRESHOLD] = NVME_FEAT_CAP_CHANGE, 203 [NVME_ERROR_RECOVERY] = NVME_FEAT_CAP_CHANGE | NVME_FEAT_CAP_NS, 204 [NVME_VOLATILE_WRITE_CACHE] = NVME_FEAT_CAP_CHANGE, 205 [NVME_NUMBER_OF_QUEUES] = NVME_FEAT_CAP_CHANGE, 206 [NVME_ASYNCHRONOUS_EVENT_CONF] = NVME_FEAT_CAP_CHANGE, 207 [NVME_TIMESTAMP] = NVME_FEAT_CAP_CHANGE, 208 [NVME_COMMAND_SET_PROFILE] = NVME_FEAT_CAP_CHANGE, 209 }; 210 211 static const uint32_t nvme_cse_acs[256] = { 212 [NVME_ADM_CMD_DELETE_SQ] = NVME_CMD_EFF_CSUPP, 213 [NVME_ADM_CMD_CREATE_SQ] = NVME_CMD_EFF_CSUPP, 214 [NVME_ADM_CMD_GET_LOG_PAGE] = NVME_CMD_EFF_CSUPP, 215 [NVME_ADM_CMD_DELETE_CQ] = NVME_CMD_EFF_CSUPP, 216 [NVME_ADM_CMD_CREATE_CQ] = NVME_CMD_EFF_CSUPP, 217 [NVME_ADM_CMD_IDENTIFY] = NVME_CMD_EFF_CSUPP, 218 [NVME_ADM_CMD_ABORT] = NVME_CMD_EFF_CSUPP, 219 [NVME_ADM_CMD_SET_FEATURES] = NVME_CMD_EFF_CSUPP, 220 [NVME_ADM_CMD_GET_FEATURES] = NVME_CMD_EFF_CSUPP, 221 [NVME_ADM_CMD_ASYNC_EV_REQ] = NVME_CMD_EFF_CSUPP, 222 [NVME_ADM_CMD_NS_ATTACHMENT] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_NIC, 223 [NVME_ADM_CMD_FORMAT_NVM] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, 224 }; 225 226 static const uint32_t nvme_cse_iocs_none[256]; 227 228 static const uint32_t nvme_cse_iocs_nvm[256] = { 229 [NVME_CMD_FLUSH] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, 230 [NVME_CMD_WRITE_ZEROES] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, 231 [NVME_CMD_WRITE] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, 232 [NVME_CMD_READ] = NVME_CMD_EFF_CSUPP, 233 [NVME_CMD_DSM] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, 234 [NVME_CMD_VERIFY] = NVME_CMD_EFF_CSUPP, 235 [NVME_CMD_COPY] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, 236 [NVME_CMD_COMPARE] = NVME_CMD_EFF_CSUPP, 237 }; 238 239 static const uint32_t nvme_cse_iocs_zoned[256] = { 240 [NVME_CMD_FLUSH] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, 241 [NVME_CMD_WRITE_ZEROES] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, 242 [NVME_CMD_WRITE] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, 243 [NVME_CMD_READ] = NVME_CMD_EFF_CSUPP, 244 [NVME_CMD_DSM] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, 245 [NVME_CMD_VERIFY] = NVME_CMD_EFF_CSUPP, 246 [NVME_CMD_COPY] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, 247 [NVME_CMD_COMPARE] = NVME_CMD_EFF_CSUPP, 248 [NVME_CMD_ZONE_APPEND] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, 249 [NVME_CMD_ZONE_MGMT_SEND] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC, 250 [NVME_CMD_ZONE_MGMT_RECV] = NVME_CMD_EFF_CSUPP, 251 }; 252 253 static void nvme_process_sq(void *opaque); 254 255 static uint16_t nvme_sqid(NvmeRequest *req) 256 { 257 return le16_to_cpu(req->sq->sqid); 258 } 259 260 static void nvme_assign_zone_state(NvmeNamespace *ns, NvmeZone *zone, 261 NvmeZoneState state) 262 { 263 if (QTAILQ_IN_USE(zone, entry)) { 264 switch (nvme_get_zone_state(zone)) { 265 case NVME_ZONE_STATE_EXPLICITLY_OPEN: 266 QTAILQ_REMOVE(&ns->exp_open_zones, zone, entry); 267 break; 268 case NVME_ZONE_STATE_IMPLICITLY_OPEN: 269 QTAILQ_REMOVE(&ns->imp_open_zones, zone, entry); 270 break; 271 case NVME_ZONE_STATE_CLOSED: 272 QTAILQ_REMOVE(&ns->closed_zones, zone, entry); 273 break; 274 case NVME_ZONE_STATE_FULL: 275 QTAILQ_REMOVE(&ns->full_zones, zone, entry); 276 default: 277 ; 278 } 279 } 280 281 nvme_set_zone_state(zone, state); 282 283 switch (state) { 284 case NVME_ZONE_STATE_EXPLICITLY_OPEN: 285 QTAILQ_INSERT_TAIL(&ns->exp_open_zones, zone, entry); 286 break; 287 case NVME_ZONE_STATE_IMPLICITLY_OPEN: 288 QTAILQ_INSERT_TAIL(&ns->imp_open_zones, zone, entry); 289 break; 290 case NVME_ZONE_STATE_CLOSED: 291 QTAILQ_INSERT_TAIL(&ns->closed_zones, zone, entry); 292 break; 293 case NVME_ZONE_STATE_FULL: 294 QTAILQ_INSERT_TAIL(&ns->full_zones, zone, entry); 295 case NVME_ZONE_STATE_READ_ONLY: 296 break; 297 default: 298 zone->d.za = 0; 299 } 300 } 301 302 /* 303 * Check if we can open a zone without exceeding open/active limits. 304 * AOR stands for "Active and Open Resources" (see TP 4053 section 2.5). 305 */ 306 static int nvme_aor_check(NvmeNamespace *ns, uint32_t act, uint32_t opn) 307 { 308 if (ns->params.max_active_zones != 0 && 309 ns->nr_active_zones + act > ns->params.max_active_zones) { 310 trace_pci_nvme_err_insuff_active_res(ns->params.max_active_zones); 311 return NVME_ZONE_TOO_MANY_ACTIVE | NVME_DNR; 312 } 313 if (ns->params.max_open_zones != 0 && 314 ns->nr_open_zones + opn > ns->params.max_open_zones) { 315 trace_pci_nvme_err_insuff_open_res(ns->params.max_open_zones); 316 return NVME_ZONE_TOO_MANY_OPEN | NVME_DNR; 317 } 318 319 return NVME_SUCCESS; 320 } 321 322 static bool nvme_addr_is_cmb(NvmeCtrl *n, hwaddr addr) 323 { 324 hwaddr hi, lo; 325 326 if (!n->cmb.cmse) { 327 return false; 328 } 329 330 lo = n->params.legacy_cmb ? n->cmb.mem.addr : n->cmb.cba; 331 hi = lo + int128_get64(n->cmb.mem.size); 332 333 return addr >= lo && addr < hi; 334 } 335 336 static inline void *nvme_addr_to_cmb(NvmeCtrl *n, hwaddr addr) 337 { 338 hwaddr base = n->params.legacy_cmb ? n->cmb.mem.addr : n->cmb.cba; 339 return &n->cmb.buf[addr - base]; 340 } 341 342 static bool nvme_addr_is_pmr(NvmeCtrl *n, hwaddr addr) 343 { 344 hwaddr hi; 345 346 if (!n->pmr.cmse) { 347 return false; 348 } 349 350 hi = n->pmr.cba + int128_get64(n->pmr.dev->mr.size); 351 352 return addr >= n->pmr.cba && addr < hi; 353 } 354 355 static inline void *nvme_addr_to_pmr(NvmeCtrl *n, hwaddr addr) 356 { 357 return memory_region_get_ram_ptr(&n->pmr.dev->mr) + (addr - n->pmr.cba); 358 } 359 360 static int nvme_addr_read(NvmeCtrl *n, hwaddr addr, void *buf, int size) 361 { 362 hwaddr hi = addr + size - 1; 363 if (hi < addr) { 364 return 1; 365 } 366 367 if (n->bar.cmbsz && nvme_addr_is_cmb(n, addr) && nvme_addr_is_cmb(n, hi)) { 368 memcpy(buf, nvme_addr_to_cmb(n, addr), size); 369 return 0; 370 } 371 372 if (nvme_addr_is_pmr(n, addr) && nvme_addr_is_pmr(n, hi)) { 373 memcpy(buf, nvme_addr_to_pmr(n, addr), size); 374 return 0; 375 } 376 377 return pci_dma_read(&n->parent_obj, addr, buf, size); 378 } 379 380 static int nvme_addr_write(NvmeCtrl *n, hwaddr addr, void *buf, int size) 381 { 382 hwaddr hi = addr + size - 1; 383 if (hi < addr) { 384 return 1; 385 } 386 387 if (n->bar.cmbsz && nvme_addr_is_cmb(n, addr) && nvme_addr_is_cmb(n, hi)) { 388 memcpy(nvme_addr_to_cmb(n, addr), buf, size); 389 return 0; 390 } 391 392 if (nvme_addr_is_pmr(n, addr) && nvme_addr_is_pmr(n, hi)) { 393 memcpy(nvme_addr_to_pmr(n, addr), buf, size); 394 return 0; 395 } 396 397 return pci_dma_write(&n->parent_obj, addr, buf, size); 398 } 399 400 static bool nvme_nsid_valid(NvmeCtrl *n, uint32_t nsid) 401 { 402 return nsid && 403 (nsid == NVME_NSID_BROADCAST || nsid <= NVME_MAX_NAMESPACES); 404 } 405 406 static int nvme_check_sqid(NvmeCtrl *n, uint16_t sqid) 407 { 408 return sqid < n->params.max_ioqpairs + 1 && n->sq[sqid] != NULL ? 0 : -1; 409 } 410 411 static int nvme_check_cqid(NvmeCtrl *n, uint16_t cqid) 412 { 413 return cqid < n->params.max_ioqpairs + 1 && n->cq[cqid] != NULL ? 0 : -1; 414 } 415 416 static void nvme_inc_cq_tail(NvmeCQueue *cq) 417 { 418 cq->tail++; 419 if (cq->tail >= cq->size) { 420 cq->tail = 0; 421 cq->phase = !cq->phase; 422 } 423 } 424 425 static void nvme_inc_sq_head(NvmeSQueue *sq) 426 { 427 sq->head = (sq->head + 1) % sq->size; 428 } 429 430 static uint8_t nvme_cq_full(NvmeCQueue *cq) 431 { 432 return (cq->tail + 1) % cq->size == cq->head; 433 } 434 435 static uint8_t nvme_sq_empty(NvmeSQueue *sq) 436 { 437 return sq->head == sq->tail; 438 } 439 440 static void nvme_irq_check(NvmeCtrl *n) 441 { 442 uint32_t intms = ldl_le_p(&n->bar.intms); 443 444 if (msix_enabled(&(n->parent_obj))) { 445 return; 446 } 447 if (~intms & n->irq_status) { 448 pci_irq_assert(&n->parent_obj); 449 } else { 450 pci_irq_deassert(&n->parent_obj); 451 } 452 } 453 454 static void nvme_irq_assert(NvmeCtrl *n, NvmeCQueue *cq) 455 { 456 if (cq->irq_enabled) { 457 if (msix_enabled(&(n->parent_obj))) { 458 trace_pci_nvme_irq_msix(cq->vector); 459 msix_notify(&(n->parent_obj), cq->vector); 460 } else { 461 trace_pci_nvme_irq_pin(); 462 assert(cq->vector < 32); 463 n->irq_status |= 1 << cq->vector; 464 nvme_irq_check(n); 465 } 466 } else { 467 trace_pci_nvme_irq_masked(); 468 } 469 } 470 471 static void nvme_irq_deassert(NvmeCtrl *n, NvmeCQueue *cq) 472 { 473 if (cq->irq_enabled) { 474 if (msix_enabled(&(n->parent_obj))) { 475 return; 476 } else { 477 assert(cq->vector < 32); 478 if (!n->cq_pending) { 479 n->irq_status &= ~(1 << cq->vector); 480 } 481 nvme_irq_check(n); 482 } 483 } 484 } 485 486 static void nvme_req_clear(NvmeRequest *req) 487 { 488 req->ns = NULL; 489 req->opaque = NULL; 490 req->aiocb = NULL; 491 memset(&req->cqe, 0x0, sizeof(req->cqe)); 492 req->status = NVME_SUCCESS; 493 } 494 495 static inline void nvme_sg_init(NvmeCtrl *n, NvmeSg *sg, bool dma) 496 { 497 if (dma) { 498 pci_dma_sglist_init(&sg->qsg, &n->parent_obj, 0); 499 sg->flags = NVME_SG_DMA; 500 } else { 501 qemu_iovec_init(&sg->iov, 0); 502 } 503 504 sg->flags |= NVME_SG_ALLOC; 505 } 506 507 static inline void nvme_sg_unmap(NvmeSg *sg) 508 { 509 if (!(sg->flags & NVME_SG_ALLOC)) { 510 return; 511 } 512 513 if (sg->flags & NVME_SG_DMA) { 514 qemu_sglist_destroy(&sg->qsg); 515 } else { 516 qemu_iovec_destroy(&sg->iov); 517 } 518 519 memset(sg, 0x0, sizeof(*sg)); 520 } 521 522 /* 523 * When metadata is transfered as extended LBAs, the DPTR mapped into `sg` 524 * holds both data and metadata. This function splits the data and metadata 525 * into two separate QSG/IOVs. 526 */ 527 static void nvme_sg_split(NvmeSg *sg, NvmeNamespace *ns, NvmeSg *data, 528 NvmeSg *mdata) 529 { 530 NvmeSg *dst = data; 531 uint32_t trans_len, count = ns->lbasz; 532 uint64_t offset = 0; 533 bool dma = sg->flags & NVME_SG_DMA; 534 size_t sge_len; 535 size_t sg_len = dma ? sg->qsg.size : sg->iov.size; 536 int sg_idx = 0; 537 538 assert(sg->flags & NVME_SG_ALLOC); 539 540 while (sg_len) { 541 sge_len = dma ? sg->qsg.sg[sg_idx].len : sg->iov.iov[sg_idx].iov_len; 542 543 trans_len = MIN(sg_len, count); 544 trans_len = MIN(trans_len, sge_len - offset); 545 546 if (dst) { 547 if (dma) { 548 qemu_sglist_add(&dst->qsg, sg->qsg.sg[sg_idx].base + offset, 549 trans_len); 550 } else { 551 qemu_iovec_add(&dst->iov, 552 sg->iov.iov[sg_idx].iov_base + offset, 553 trans_len); 554 } 555 } 556 557 sg_len -= trans_len; 558 count -= trans_len; 559 offset += trans_len; 560 561 if (count == 0) { 562 dst = (dst == data) ? mdata : data; 563 count = (dst == data) ? ns->lbasz : ns->lbaf.ms; 564 } 565 566 if (sge_len == offset) { 567 offset = 0; 568 sg_idx++; 569 } 570 } 571 } 572 573 static uint16_t nvme_map_addr_cmb(NvmeCtrl *n, QEMUIOVector *iov, hwaddr addr, 574 size_t len) 575 { 576 if (!len) { 577 return NVME_SUCCESS; 578 } 579 580 trace_pci_nvme_map_addr_cmb(addr, len); 581 582 if (!nvme_addr_is_cmb(n, addr) || !nvme_addr_is_cmb(n, addr + len - 1)) { 583 return NVME_DATA_TRAS_ERROR; 584 } 585 586 qemu_iovec_add(iov, nvme_addr_to_cmb(n, addr), len); 587 588 return NVME_SUCCESS; 589 } 590 591 static uint16_t nvme_map_addr_pmr(NvmeCtrl *n, QEMUIOVector *iov, hwaddr addr, 592 size_t len) 593 { 594 if (!len) { 595 return NVME_SUCCESS; 596 } 597 598 if (!nvme_addr_is_pmr(n, addr) || !nvme_addr_is_pmr(n, addr + len - 1)) { 599 return NVME_DATA_TRAS_ERROR; 600 } 601 602 qemu_iovec_add(iov, nvme_addr_to_pmr(n, addr), len); 603 604 return NVME_SUCCESS; 605 } 606 607 static uint16_t nvme_map_addr(NvmeCtrl *n, NvmeSg *sg, hwaddr addr, size_t len) 608 { 609 bool cmb = false, pmr = false; 610 611 if (!len) { 612 return NVME_SUCCESS; 613 } 614 615 trace_pci_nvme_map_addr(addr, len); 616 617 if (nvme_addr_is_cmb(n, addr)) { 618 cmb = true; 619 } else if (nvme_addr_is_pmr(n, addr)) { 620 pmr = true; 621 } 622 623 if (cmb || pmr) { 624 if (sg->flags & NVME_SG_DMA) { 625 return NVME_INVALID_USE_OF_CMB | NVME_DNR; 626 } 627 628 if (sg->iov.niov + 1 > IOV_MAX) { 629 goto max_mappings_exceeded; 630 } 631 632 if (cmb) { 633 return nvme_map_addr_cmb(n, &sg->iov, addr, len); 634 } else { 635 return nvme_map_addr_pmr(n, &sg->iov, addr, len); 636 } 637 } 638 639 if (!(sg->flags & NVME_SG_DMA)) { 640 return NVME_INVALID_USE_OF_CMB | NVME_DNR; 641 } 642 643 if (sg->qsg.nsg + 1 > IOV_MAX) { 644 goto max_mappings_exceeded; 645 } 646 647 qemu_sglist_add(&sg->qsg, addr, len); 648 649 return NVME_SUCCESS; 650 651 max_mappings_exceeded: 652 NVME_GUEST_ERR(pci_nvme_ub_too_many_mappings, 653 "number of mappings exceed 1024"); 654 return NVME_INTERNAL_DEV_ERROR | NVME_DNR; 655 } 656 657 static inline bool nvme_addr_is_dma(NvmeCtrl *n, hwaddr addr) 658 { 659 return !(nvme_addr_is_cmb(n, addr) || nvme_addr_is_pmr(n, addr)); 660 } 661 662 static uint16_t nvme_map_prp(NvmeCtrl *n, NvmeSg *sg, uint64_t prp1, 663 uint64_t prp2, uint32_t len) 664 { 665 hwaddr trans_len = n->page_size - (prp1 % n->page_size); 666 trans_len = MIN(len, trans_len); 667 int num_prps = (len >> n->page_bits) + 1; 668 uint16_t status; 669 int ret; 670 671 trace_pci_nvme_map_prp(trans_len, len, prp1, prp2, num_prps); 672 673 nvme_sg_init(n, sg, nvme_addr_is_dma(n, prp1)); 674 675 status = nvme_map_addr(n, sg, prp1, trans_len); 676 if (status) { 677 goto unmap; 678 } 679 680 len -= trans_len; 681 if (len) { 682 if (len > n->page_size) { 683 uint64_t prp_list[n->max_prp_ents]; 684 uint32_t nents, prp_trans; 685 int i = 0; 686 687 /* 688 * The first PRP list entry, pointed to by PRP2 may contain offset. 689 * Hence, we need to calculate the number of entries in based on 690 * that offset. 691 */ 692 nents = (n->page_size - (prp2 & (n->page_size - 1))) >> 3; 693 prp_trans = MIN(n->max_prp_ents, nents) * sizeof(uint64_t); 694 ret = nvme_addr_read(n, prp2, (void *)prp_list, prp_trans); 695 if (ret) { 696 trace_pci_nvme_err_addr_read(prp2); 697 status = NVME_DATA_TRAS_ERROR; 698 goto unmap; 699 } 700 while (len != 0) { 701 uint64_t prp_ent = le64_to_cpu(prp_list[i]); 702 703 if (i == nents - 1 && len > n->page_size) { 704 if (unlikely(prp_ent & (n->page_size - 1))) { 705 trace_pci_nvme_err_invalid_prplist_ent(prp_ent); 706 status = NVME_INVALID_PRP_OFFSET | NVME_DNR; 707 goto unmap; 708 } 709 710 i = 0; 711 nents = (len + n->page_size - 1) >> n->page_bits; 712 nents = MIN(nents, n->max_prp_ents); 713 prp_trans = nents * sizeof(uint64_t); 714 ret = nvme_addr_read(n, prp_ent, (void *)prp_list, 715 prp_trans); 716 if (ret) { 717 trace_pci_nvme_err_addr_read(prp_ent); 718 status = NVME_DATA_TRAS_ERROR; 719 goto unmap; 720 } 721 prp_ent = le64_to_cpu(prp_list[i]); 722 } 723 724 if (unlikely(prp_ent & (n->page_size - 1))) { 725 trace_pci_nvme_err_invalid_prplist_ent(prp_ent); 726 status = NVME_INVALID_PRP_OFFSET | NVME_DNR; 727 goto unmap; 728 } 729 730 trans_len = MIN(len, n->page_size); 731 status = nvme_map_addr(n, sg, prp_ent, trans_len); 732 if (status) { 733 goto unmap; 734 } 735 736 len -= trans_len; 737 i++; 738 } 739 } else { 740 if (unlikely(prp2 & (n->page_size - 1))) { 741 trace_pci_nvme_err_invalid_prp2_align(prp2); 742 status = NVME_INVALID_PRP_OFFSET | NVME_DNR; 743 goto unmap; 744 } 745 status = nvme_map_addr(n, sg, prp2, len); 746 if (status) { 747 goto unmap; 748 } 749 } 750 } 751 752 return NVME_SUCCESS; 753 754 unmap: 755 nvme_sg_unmap(sg); 756 return status; 757 } 758 759 /* 760 * Map 'nsgld' data descriptors from 'segment'. The function will subtract the 761 * number of bytes mapped in len. 762 */ 763 static uint16_t nvme_map_sgl_data(NvmeCtrl *n, NvmeSg *sg, 764 NvmeSglDescriptor *segment, uint64_t nsgld, 765 size_t *len, NvmeCmd *cmd) 766 { 767 dma_addr_t addr, trans_len; 768 uint32_t dlen; 769 uint16_t status; 770 771 for (int i = 0; i < nsgld; i++) { 772 uint8_t type = NVME_SGL_TYPE(segment[i].type); 773 774 switch (type) { 775 case NVME_SGL_DESCR_TYPE_BIT_BUCKET: 776 if (cmd->opcode == NVME_CMD_WRITE) { 777 continue; 778 } 779 case NVME_SGL_DESCR_TYPE_DATA_BLOCK: 780 break; 781 case NVME_SGL_DESCR_TYPE_SEGMENT: 782 case NVME_SGL_DESCR_TYPE_LAST_SEGMENT: 783 return NVME_INVALID_NUM_SGL_DESCRS | NVME_DNR; 784 default: 785 return NVME_SGL_DESCR_TYPE_INVALID | NVME_DNR; 786 } 787 788 dlen = le32_to_cpu(segment[i].len); 789 790 if (!dlen) { 791 continue; 792 } 793 794 if (*len == 0) { 795 /* 796 * All data has been mapped, but the SGL contains additional 797 * segments and/or descriptors. The controller might accept 798 * ignoring the rest of the SGL. 799 */ 800 uint32_t sgls = le32_to_cpu(n->id_ctrl.sgls); 801 if (sgls & NVME_CTRL_SGLS_EXCESS_LENGTH) { 802 break; 803 } 804 805 trace_pci_nvme_err_invalid_sgl_excess_length(dlen); 806 return NVME_DATA_SGL_LEN_INVALID | NVME_DNR; 807 } 808 809 trans_len = MIN(*len, dlen); 810 811 if (type == NVME_SGL_DESCR_TYPE_BIT_BUCKET) { 812 goto next; 813 } 814 815 addr = le64_to_cpu(segment[i].addr); 816 817 if (UINT64_MAX - addr < dlen) { 818 return NVME_DATA_SGL_LEN_INVALID | NVME_DNR; 819 } 820 821 status = nvme_map_addr(n, sg, addr, trans_len); 822 if (status) { 823 return status; 824 } 825 826 next: 827 *len -= trans_len; 828 } 829 830 return NVME_SUCCESS; 831 } 832 833 static uint16_t nvme_map_sgl(NvmeCtrl *n, NvmeSg *sg, NvmeSglDescriptor sgl, 834 size_t len, NvmeCmd *cmd) 835 { 836 /* 837 * Read the segment in chunks of 256 descriptors (one 4k page) to avoid 838 * dynamically allocating a potentially huge SGL. The spec allows the SGL 839 * to be larger (as in number of bytes required to describe the SGL 840 * descriptors and segment chain) than the command transfer size, so it is 841 * not bounded by MDTS. 842 */ 843 const int SEG_CHUNK_SIZE = 256; 844 845 NvmeSglDescriptor segment[SEG_CHUNK_SIZE], *sgld, *last_sgld; 846 uint64_t nsgld; 847 uint32_t seg_len; 848 uint16_t status; 849 hwaddr addr; 850 int ret; 851 852 sgld = &sgl; 853 addr = le64_to_cpu(sgl.addr); 854 855 trace_pci_nvme_map_sgl(NVME_SGL_TYPE(sgl.type), len); 856 857 nvme_sg_init(n, sg, nvme_addr_is_dma(n, addr)); 858 859 /* 860 * If the entire transfer can be described with a single data block it can 861 * be mapped directly. 862 */ 863 if (NVME_SGL_TYPE(sgl.type) == NVME_SGL_DESCR_TYPE_DATA_BLOCK) { 864 status = nvme_map_sgl_data(n, sg, sgld, 1, &len, cmd); 865 if (status) { 866 goto unmap; 867 } 868 869 goto out; 870 } 871 872 for (;;) { 873 switch (NVME_SGL_TYPE(sgld->type)) { 874 case NVME_SGL_DESCR_TYPE_SEGMENT: 875 case NVME_SGL_DESCR_TYPE_LAST_SEGMENT: 876 break; 877 default: 878 return NVME_INVALID_SGL_SEG_DESCR | NVME_DNR; 879 } 880 881 seg_len = le32_to_cpu(sgld->len); 882 883 /* check the length of the (Last) Segment descriptor */ 884 if ((!seg_len || seg_len & 0xf) && 885 (NVME_SGL_TYPE(sgld->type) != NVME_SGL_DESCR_TYPE_BIT_BUCKET)) { 886 return NVME_INVALID_SGL_SEG_DESCR | NVME_DNR; 887 } 888 889 if (UINT64_MAX - addr < seg_len) { 890 return NVME_DATA_SGL_LEN_INVALID | NVME_DNR; 891 } 892 893 nsgld = seg_len / sizeof(NvmeSglDescriptor); 894 895 while (nsgld > SEG_CHUNK_SIZE) { 896 if (nvme_addr_read(n, addr, segment, sizeof(segment))) { 897 trace_pci_nvme_err_addr_read(addr); 898 status = NVME_DATA_TRAS_ERROR; 899 goto unmap; 900 } 901 902 status = nvme_map_sgl_data(n, sg, segment, SEG_CHUNK_SIZE, 903 &len, cmd); 904 if (status) { 905 goto unmap; 906 } 907 908 nsgld -= SEG_CHUNK_SIZE; 909 addr += SEG_CHUNK_SIZE * sizeof(NvmeSglDescriptor); 910 } 911 912 ret = nvme_addr_read(n, addr, segment, nsgld * 913 sizeof(NvmeSglDescriptor)); 914 if (ret) { 915 trace_pci_nvme_err_addr_read(addr); 916 status = NVME_DATA_TRAS_ERROR; 917 goto unmap; 918 } 919 920 last_sgld = &segment[nsgld - 1]; 921 922 /* 923 * If the segment ends with a Data Block or Bit Bucket Descriptor Type, 924 * then we are done. 925 */ 926 switch (NVME_SGL_TYPE(last_sgld->type)) { 927 case NVME_SGL_DESCR_TYPE_DATA_BLOCK: 928 case NVME_SGL_DESCR_TYPE_BIT_BUCKET: 929 status = nvme_map_sgl_data(n, sg, segment, nsgld, &len, cmd); 930 if (status) { 931 goto unmap; 932 } 933 934 goto out; 935 936 default: 937 break; 938 } 939 940 /* 941 * If the last descriptor was not a Data Block or Bit Bucket, then the 942 * current segment must not be a Last Segment. 943 */ 944 if (NVME_SGL_TYPE(sgld->type) == NVME_SGL_DESCR_TYPE_LAST_SEGMENT) { 945 status = NVME_INVALID_SGL_SEG_DESCR | NVME_DNR; 946 goto unmap; 947 } 948 949 sgld = last_sgld; 950 addr = le64_to_cpu(sgld->addr); 951 952 /* 953 * Do not map the last descriptor; it will be a Segment or Last Segment 954 * descriptor and is handled by the next iteration. 955 */ 956 status = nvme_map_sgl_data(n, sg, segment, nsgld - 1, &len, cmd); 957 if (status) { 958 goto unmap; 959 } 960 } 961 962 out: 963 /* if there is any residual left in len, the SGL was too short */ 964 if (len) { 965 status = NVME_DATA_SGL_LEN_INVALID | NVME_DNR; 966 goto unmap; 967 } 968 969 return NVME_SUCCESS; 970 971 unmap: 972 nvme_sg_unmap(sg); 973 return status; 974 } 975 976 uint16_t nvme_map_dptr(NvmeCtrl *n, NvmeSg *sg, size_t len, 977 NvmeCmd *cmd) 978 { 979 uint64_t prp1, prp2; 980 981 switch (NVME_CMD_FLAGS_PSDT(cmd->flags)) { 982 case NVME_PSDT_PRP: 983 prp1 = le64_to_cpu(cmd->dptr.prp1); 984 prp2 = le64_to_cpu(cmd->dptr.prp2); 985 986 return nvme_map_prp(n, sg, prp1, prp2, len); 987 case NVME_PSDT_SGL_MPTR_CONTIGUOUS: 988 case NVME_PSDT_SGL_MPTR_SGL: 989 return nvme_map_sgl(n, sg, cmd->dptr.sgl, len, cmd); 990 default: 991 return NVME_INVALID_FIELD; 992 } 993 } 994 995 static uint16_t nvme_map_mptr(NvmeCtrl *n, NvmeSg *sg, size_t len, 996 NvmeCmd *cmd) 997 { 998 int psdt = NVME_CMD_FLAGS_PSDT(cmd->flags); 999 hwaddr mptr = le64_to_cpu(cmd->mptr); 1000 uint16_t status; 1001 1002 if (psdt == NVME_PSDT_SGL_MPTR_SGL) { 1003 NvmeSglDescriptor sgl; 1004 1005 if (nvme_addr_read(n, mptr, &sgl, sizeof(sgl))) { 1006 return NVME_DATA_TRAS_ERROR; 1007 } 1008 1009 status = nvme_map_sgl(n, sg, sgl, len, cmd); 1010 if (status && (status & 0x7ff) == NVME_DATA_SGL_LEN_INVALID) { 1011 status = NVME_MD_SGL_LEN_INVALID | NVME_DNR; 1012 } 1013 1014 return status; 1015 } 1016 1017 nvme_sg_init(n, sg, nvme_addr_is_dma(n, mptr)); 1018 status = nvme_map_addr(n, sg, mptr, len); 1019 if (status) { 1020 nvme_sg_unmap(sg); 1021 } 1022 1023 return status; 1024 } 1025 1026 static uint16_t nvme_map_data(NvmeCtrl *n, uint32_t nlb, NvmeRequest *req) 1027 { 1028 NvmeNamespace *ns = req->ns; 1029 NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; 1030 bool pi = !!NVME_ID_NS_DPS_TYPE(ns->id_ns.dps); 1031 bool pract = !!(le16_to_cpu(rw->control) & NVME_RW_PRINFO_PRACT); 1032 size_t len = nvme_l2b(ns, nlb); 1033 uint16_t status; 1034 1035 if (nvme_ns_ext(ns) && !(pi && pract && ns->lbaf.ms == 8)) { 1036 NvmeSg sg; 1037 1038 len += nvme_m2b(ns, nlb); 1039 1040 status = nvme_map_dptr(n, &sg, len, &req->cmd); 1041 if (status) { 1042 return status; 1043 } 1044 1045 nvme_sg_init(n, &req->sg, sg.flags & NVME_SG_DMA); 1046 nvme_sg_split(&sg, ns, &req->sg, NULL); 1047 nvme_sg_unmap(&sg); 1048 1049 return NVME_SUCCESS; 1050 } 1051 1052 return nvme_map_dptr(n, &req->sg, len, &req->cmd); 1053 } 1054 1055 static uint16_t nvme_map_mdata(NvmeCtrl *n, uint32_t nlb, NvmeRequest *req) 1056 { 1057 NvmeNamespace *ns = req->ns; 1058 size_t len = nvme_m2b(ns, nlb); 1059 uint16_t status; 1060 1061 if (nvme_ns_ext(ns)) { 1062 NvmeSg sg; 1063 1064 len += nvme_l2b(ns, nlb); 1065 1066 status = nvme_map_dptr(n, &sg, len, &req->cmd); 1067 if (status) { 1068 return status; 1069 } 1070 1071 nvme_sg_init(n, &req->sg, sg.flags & NVME_SG_DMA); 1072 nvme_sg_split(&sg, ns, NULL, &req->sg); 1073 nvme_sg_unmap(&sg); 1074 1075 return NVME_SUCCESS; 1076 } 1077 1078 return nvme_map_mptr(n, &req->sg, len, &req->cmd); 1079 } 1080 1081 static uint16_t nvme_tx_interleaved(NvmeCtrl *n, NvmeSg *sg, uint8_t *ptr, 1082 uint32_t len, uint32_t bytes, 1083 int32_t skip_bytes, int64_t offset, 1084 NvmeTxDirection dir) 1085 { 1086 hwaddr addr; 1087 uint32_t trans_len, count = bytes; 1088 bool dma = sg->flags & NVME_SG_DMA; 1089 int64_t sge_len; 1090 int sg_idx = 0; 1091 int ret; 1092 1093 assert(sg->flags & NVME_SG_ALLOC); 1094 1095 while (len) { 1096 sge_len = dma ? sg->qsg.sg[sg_idx].len : sg->iov.iov[sg_idx].iov_len; 1097 1098 if (sge_len - offset < 0) { 1099 offset -= sge_len; 1100 sg_idx++; 1101 continue; 1102 } 1103 1104 if (sge_len == offset) { 1105 offset = 0; 1106 sg_idx++; 1107 continue; 1108 } 1109 1110 trans_len = MIN(len, count); 1111 trans_len = MIN(trans_len, sge_len - offset); 1112 1113 if (dma) { 1114 addr = sg->qsg.sg[sg_idx].base + offset; 1115 } else { 1116 addr = (hwaddr)(uintptr_t)sg->iov.iov[sg_idx].iov_base + offset; 1117 } 1118 1119 if (dir == NVME_TX_DIRECTION_TO_DEVICE) { 1120 ret = nvme_addr_read(n, addr, ptr, trans_len); 1121 } else { 1122 ret = nvme_addr_write(n, addr, ptr, trans_len); 1123 } 1124 1125 if (ret) { 1126 return NVME_DATA_TRAS_ERROR; 1127 } 1128 1129 ptr += trans_len; 1130 len -= trans_len; 1131 count -= trans_len; 1132 offset += trans_len; 1133 1134 if (count == 0) { 1135 count = bytes; 1136 offset += skip_bytes; 1137 } 1138 } 1139 1140 return NVME_SUCCESS; 1141 } 1142 1143 static uint16_t nvme_tx(NvmeCtrl *n, NvmeSg *sg, uint8_t *ptr, uint32_t len, 1144 NvmeTxDirection dir) 1145 { 1146 assert(sg->flags & NVME_SG_ALLOC); 1147 1148 if (sg->flags & NVME_SG_DMA) { 1149 uint64_t residual; 1150 1151 if (dir == NVME_TX_DIRECTION_TO_DEVICE) { 1152 residual = dma_buf_write(ptr, len, &sg->qsg); 1153 } else { 1154 residual = dma_buf_read(ptr, len, &sg->qsg); 1155 } 1156 1157 if (unlikely(residual)) { 1158 trace_pci_nvme_err_invalid_dma(); 1159 return NVME_INVALID_FIELD | NVME_DNR; 1160 } 1161 } else { 1162 size_t bytes; 1163 1164 if (dir == NVME_TX_DIRECTION_TO_DEVICE) { 1165 bytes = qemu_iovec_to_buf(&sg->iov, 0, ptr, len); 1166 } else { 1167 bytes = qemu_iovec_from_buf(&sg->iov, 0, ptr, len); 1168 } 1169 1170 if (unlikely(bytes != len)) { 1171 trace_pci_nvme_err_invalid_dma(); 1172 return NVME_INVALID_FIELD | NVME_DNR; 1173 } 1174 } 1175 1176 return NVME_SUCCESS; 1177 } 1178 1179 static inline uint16_t nvme_c2h(NvmeCtrl *n, uint8_t *ptr, uint32_t len, 1180 NvmeRequest *req) 1181 { 1182 uint16_t status; 1183 1184 status = nvme_map_dptr(n, &req->sg, len, &req->cmd); 1185 if (status) { 1186 return status; 1187 } 1188 1189 return nvme_tx(n, &req->sg, ptr, len, NVME_TX_DIRECTION_FROM_DEVICE); 1190 } 1191 1192 static inline uint16_t nvme_h2c(NvmeCtrl *n, uint8_t *ptr, uint32_t len, 1193 NvmeRequest *req) 1194 { 1195 uint16_t status; 1196 1197 status = nvme_map_dptr(n, &req->sg, len, &req->cmd); 1198 if (status) { 1199 return status; 1200 } 1201 1202 return nvme_tx(n, &req->sg, ptr, len, NVME_TX_DIRECTION_TO_DEVICE); 1203 } 1204 1205 uint16_t nvme_bounce_data(NvmeCtrl *n, uint8_t *ptr, uint32_t len, 1206 NvmeTxDirection dir, NvmeRequest *req) 1207 { 1208 NvmeNamespace *ns = req->ns; 1209 NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; 1210 bool pi = !!NVME_ID_NS_DPS_TYPE(ns->id_ns.dps); 1211 bool pract = !!(le16_to_cpu(rw->control) & NVME_RW_PRINFO_PRACT); 1212 1213 if (nvme_ns_ext(ns) && !(pi && pract && ns->lbaf.ms == 8)) { 1214 return nvme_tx_interleaved(n, &req->sg, ptr, len, ns->lbasz, 1215 ns->lbaf.ms, 0, dir); 1216 } 1217 1218 return nvme_tx(n, &req->sg, ptr, len, dir); 1219 } 1220 1221 uint16_t nvme_bounce_mdata(NvmeCtrl *n, uint8_t *ptr, uint32_t len, 1222 NvmeTxDirection dir, NvmeRequest *req) 1223 { 1224 NvmeNamespace *ns = req->ns; 1225 uint16_t status; 1226 1227 if (nvme_ns_ext(ns)) { 1228 return nvme_tx_interleaved(n, &req->sg, ptr, len, ns->lbaf.ms, 1229 ns->lbasz, ns->lbasz, dir); 1230 } 1231 1232 nvme_sg_unmap(&req->sg); 1233 1234 status = nvme_map_mptr(n, &req->sg, len, &req->cmd); 1235 if (status) { 1236 return status; 1237 } 1238 1239 return nvme_tx(n, &req->sg, ptr, len, dir); 1240 } 1241 1242 static inline void nvme_blk_read(BlockBackend *blk, int64_t offset, 1243 BlockCompletionFunc *cb, NvmeRequest *req) 1244 { 1245 assert(req->sg.flags & NVME_SG_ALLOC); 1246 1247 if (req->sg.flags & NVME_SG_DMA) { 1248 req->aiocb = dma_blk_read(blk, &req->sg.qsg, offset, BDRV_SECTOR_SIZE, 1249 cb, req); 1250 } else { 1251 req->aiocb = blk_aio_preadv(blk, offset, &req->sg.iov, 0, cb, req); 1252 } 1253 } 1254 1255 static inline void nvme_blk_write(BlockBackend *blk, int64_t offset, 1256 BlockCompletionFunc *cb, NvmeRequest *req) 1257 { 1258 assert(req->sg.flags & NVME_SG_ALLOC); 1259 1260 if (req->sg.flags & NVME_SG_DMA) { 1261 req->aiocb = dma_blk_write(blk, &req->sg.qsg, offset, BDRV_SECTOR_SIZE, 1262 cb, req); 1263 } else { 1264 req->aiocb = blk_aio_pwritev(blk, offset, &req->sg.iov, 0, cb, req); 1265 } 1266 } 1267 1268 static void nvme_post_cqes(void *opaque) 1269 { 1270 NvmeCQueue *cq = opaque; 1271 NvmeCtrl *n = cq->ctrl; 1272 NvmeRequest *req, *next; 1273 bool pending = cq->head != cq->tail; 1274 int ret; 1275 1276 QTAILQ_FOREACH_SAFE(req, &cq->req_list, entry, next) { 1277 NvmeSQueue *sq; 1278 hwaddr addr; 1279 1280 if (nvme_cq_full(cq)) { 1281 break; 1282 } 1283 1284 sq = req->sq; 1285 req->cqe.status = cpu_to_le16((req->status << 1) | cq->phase); 1286 req->cqe.sq_id = cpu_to_le16(sq->sqid); 1287 req->cqe.sq_head = cpu_to_le16(sq->head); 1288 addr = cq->dma_addr + cq->tail * n->cqe_size; 1289 ret = pci_dma_write(&n->parent_obj, addr, (void *)&req->cqe, 1290 sizeof(req->cqe)); 1291 if (ret) { 1292 trace_pci_nvme_err_addr_write(addr); 1293 trace_pci_nvme_err_cfs(); 1294 stl_le_p(&n->bar.csts, NVME_CSTS_FAILED); 1295 break; 1296 } 1297 QTAILQ_REMOVE(&cq->req_list, req, entry); 1298 nvme_inc_cq_tail(cq); 1299 nvme_sg_unmap(&req->sg); 1300 QTAILQ_INSERT_TAIL(&sq->req_list, req, entry); 1301 } 1302 if (cq->tail != cq->head) { 1303 if (cq->irq_enabled && !pending) { 1304 n->cq_pending++; 1305 } 1306 1307 nvme_irq_assert(n, cq); 1308 } 1309 } 1310 1311 static void nvme_enqueue_req_completion(NvmeCQueue *cq, NvmeRequest *req) 1312 { 1313 assert(cq->cqid == req->sq->cqid); 1314 trace_pci_nvme_enqueue_req_completion(nvme_cid(req), cq->cqid, 1315 le32_to_cpu(req->cqe.result), 1316 le32_to_cpu(req->cqe.dw1), 1317 req->status); 1318 1319 if (req->status) { 1320 trace_pci_nvme_err_req_status(nvme_cid(req), nvme_nsid(req->ns), 1321 req->status, req->cmd.opcode); 1322 } 1323 1324 QTAILQ_REMOVE(&req->sq->out_req_list, req, entry); 1325 QTAILQ_INSERT_TAIL(&cq->req_list, req, entry); 1326 timer_mod(cq->timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 500); 1327 } 1328 1329 static void nvme_process_aers(void *opaque) 1330 { 1331 NvmeCtrl *n = opaque; 1332 NvmeAsyncEvent *event, *next; 1333 1334 trace_pci_nvme_process_aers(n->aer_queued); 1335 1336 QTAILQ_FOREACH_SAFE(event, &n->aer_queue, entry, next) { 1337 NvmeRequest *req; 1338 NvmeAerResult *result; 1339 1340 /* can't post cqe if there is nothing to complete */ 1341 if (!n->outstanding_aers) { 1342 trace_pci_nvme_no_outstanding_aers(); 1343 break; 1344 } 1345 1346 /* ignore if masked (cqe posted, but event not cleared) */ 1347 if (n->aer_mask & (1 << event->result.event_type)) { 1348 trace_pci_nvme_aer_masked(event->result.event_type, n->aer_mask); 1349 continue; 1350 } 1351 1352 QTAILQ_REMOVE(&n->aer_queue, event, entry); 1353 n->aer_queued--; 1354 1355 n->aer_mask |= 1 << event->result.event_type; 1356 n->outstanding_aers--; 1357 1358 req = n->aer_reqs[n->outstanding_aers]; 1359 1360 result = (NvmeAerResult *) &req->cqe.result; 1361 result->event_type = event->result.event_type; 1362 result->event_info = event->result.event_info; 1363 result->log_page = event->result.log_page; 1364 g_free(event); 1365 1366 trace_pci_nvme_aer_post_cqe(result->event_type, result->event_info, 1367 result->log_page); 1368 1369 nvme_enqueue_req_completion(&n->admin_cq, req); 1370 } 1371 } 1372 1373 static void nvme_enqueue_event(NvmeCtrl *n, uint8_t event_type, 1374 uint8_t event_info, uint8_t log_page) 1375 { 1376 NvmeAsyncEvent *event; 1377 1378 trace_pci_nvme_enqueue_event(event_type, event_info, log_page); 1379 1380 if (n->aer_queued == n->params.aer_max_queued) { 1381 trace_pci_nvme_enqueue_event_noqueue(n->aer_queued); 1382 return; 1383 } 1384 1385 event = g_new(NvmeAsyncEvent, 1); 1386 event->result = (NvmeAerResult) { 1387 .event_type = event_type, 1388 .event_info = event_info, 1389 .log_page = log_page, 1390 }; 1391 1392 QTAILQ_INSERT_TAIL(&n->aer_queue, event, entry); 1393 n->aer_queued++; 1394 1395 nvme_process_aers(n); 1396 } 1397 1398 static void nvme_smart_event(NvmeCtrl *n, uint8_t event) 1399 { 1400 uint8_t aer_info; 1401 1402 /* Ref SPEC <Asynchronous Event Information 0x2013 SMART / Health Status> */ 1403 if (!(NVME_AEC_SMART(n->features.async_config) & event)) { 1404 return; 1405 } 1406 1407 switch (event) { 1408 case NVME_SMART_SPARE: 1409 aer_info = NVME_AER_INFO_SMART_SPARE_THRESH; 1410 break; 1411 case NVME_SMART_TEMPERATURE: 1412 aer_info = NVME_AER_INFO_SMART_TEMP_THRESH; 1413 break; 1414 case NVME_SMART_RELIABILITY: 1415 case NVME_SMART_MEDIA_READ_ONLY: 1416 case NVME_SMART_FAILED_VOLATILE_MEDIA: 1417 case NVME_SMART_PMR_UNRELIABLE: 1418 aer_info = NVME_AER_INFO_SMART_RELIABILITY; 1419 break; 1420 default: 1421 return; 1422 } 1423 1424 nvme_enqueue_event(n, NVME_AER_TYPE_SMART, aer_info, NVME_LOG_SMART_INFO); 1425 } 1426 1427 static void nvme_clear_events(NvmeCtrl *n, uint8_t event_type) 1428 { 1429 n->aer_mask &= ~(1 << event_type); 1430 if (!QTAILQ_EMPTY(&n->aer_queue)) { 1431 nvme_process_aers(n); 1432 } 1433 } 1434 1435 static inline uint16_t nvme_check_mdts(NvmeCtrl *n, size_t len) 1436 { 1437 uint8_t mdts = n->params.mdts; 1438 1439 if (mdts && len > n->page_size << mdts) { 1440 trace_pci_nvme_err_mdts(len); 1441 return NVME_INVALID_FIELD | NVME_DNR; 1442 } 1443 1444 return NVME_SUCCESS; 1445 } 1446 1447 static inline uint16_t nvme_check_bounds(NvmeNamespace *ns, uint64_t slba, 1448 uint32_t nlb) 1449 { 1450 uint64_t nsze = le64_to_cpu(ns->id_ns.nsze); 1451 1452 if (unlikely(UINT64_MAX - slba < nlb || slba + nlb > nsze)) { 1453 trace_pci_nvme_err_invalid_lba_range(slba, nlb, nsze); 1454 return NVME_LBA_RANGE | NVME_DNR; 1455 } 1456 1457 return NVME_SUCCESS; 1458 } 1459 1460 static int nvme_block_status_all(NvmeNamespace *ns, uint64_t slba, 1461 uint32_t nlb, int flags) 1462 { 1463 BlockDriverState *bs = blk_bs(ns->blkconf.blk); 1464 1465 int64_t pnum = 0, bytes = nvme_l2b(ns, nlb); 1466 int64_t offset = nvme_l2b(ns, slba); 1467 int ret; 1468 1469 /* 1470 * `pnum` holds the number of bytes after offset that shares the same 1471 * allocation status as the byte at offset. If `pnum` is different from 1472 * `bytes`, we should check the allocation status of the next range and 1473 * continue this until all bytes have been checked. 1474 */ 1475 do { 1476 bytes -= pnum; 1477 1478 ret = bdrv_block_status(bs, offset, bytes, &pnum, NULL, NULL); 1479 if (ret < 0) { 1480 return ret; 1481 } 1482 1483 1484 trace_pci_nvme_block_status(offset, bytes, pnum, ret, 1485 !!(ret & BDRV_BLOCK_ZERO)); 1486 1487 if (!(ret & flags)) { 1488 return 1; 1489 } 1490 1491 offset += pnum; 1492 } while (pnum != bytes); 1493 1494 return 0; 1495 } 1496 1497 static uint16_t nvme_check_dulbe(NvmeNamespace *ns, uint64_t slba, 1498 uint32_t nlb) 1499 { 1500 int ret; 1501 Error *err = NULL; 1502 1503 ret = nvme_block_status_all(ns, slba, nlb, BDRV_BLOCK_DATA); 1504 if (ret) { 1505 if (ret < 0) { 1506 error_setg_errno(&err, -ret, "unable to get block status"); 1507 error_report_err(err); 1508 1509 return NVME_INTERNAL_DEV_ERROR; 1510 } 1511 1512 return NVME_DULB; 1513 } 1514 1515 return NVME_SUCCESS; 1516 } 1517 1518 static void nvme_aio_err(NvmeRequest *req, int ret) 1519 { 1520 uint16_t status = NVME_SUCCESS; 1521 Error *local_err = NULL; 1522 1523 switch (req->cmd.opcode) { 1524 case NVME_CMD_READ: 1525 status = NVME_UNRECOVERED_READ; 1526 break; 1527 case NVME_CMD_FLUSH: 1528 case NVME_CMD_WRITE: 1529 case NVME_CMD_WRITE_ZEROES: 1530 case NVME_CMD_ZONE_APPEND: 1531 status = NVME_WRITE_FAULT; 1532 break; 1533 default: 1534 status = NVME_INTERNAL_DEV_ERROR; 1535 break; 1536 } 1537 1538 trace_pci_nvme_err_aio(nvme_cid(req), strerror(-ret), status); 1539 1540 error_setg_errno(&local_err, -ret, "aio failed"); 1541 error_report_err(local_err); 1542 1543 /* 1544 * Set the command status code to the first encountered error but allow a 1545 * subsequent Internal Device Error to trump it. 1546 */ 1547 if (req->status && status != NVME_INTERNAL_DEV_ERROR) { 1548 return; 1549 } 1550 1551 req->status = status; 1552 } 1553 1554 static inline uint32_t nvme_zone_idx(NvmeNamespace *ns, uint64_t slba) 1555 { 1556 return ns->zone_size_log2 > 0 ? slba >> ns->zone_size_log2 : 1557 slba / ns->zone_size; 1558 } 1559 1560 static inline NvmeZone *nvme_get_zone_by_slba(NvmeNamespace *ns, uint64_t slba) 1561 { 1562 uint32_t zone_idx = nvme_zone_idx(ns, slba); 1563 1564 if (zone_idx >= ns->num_zones) { 1565 return NULL; 1566 } 1567 1568 return &ns->zone_array[zone_idx]; 1569 } 1570 1571 static uint16_t nvme_check_zone_state_for_write(NvmeZone *zone) 1572 { 1573 uint64_t zslba = zone->d.zslba; 1574 1575 switch (nvme_get_zone_state(zone)) { 1576 case NVME_ZONE_STATE_EMPTY: 1577 case NVME_ZONE_STATE_IMPLICITLY_OPEN: 1578 case NVME_ZONE_STATE_EXPLICITLY_OPEN: 1579 case NVME_ZONE_STATE_CLOSED: 1580 return NVME_SUCCESS; 1581 case NVME_ZONE_STATE_FULL: 1582 trace_pci_nvme_err_zone_is_full(zslba); 1583 return NVME_ZONE_FULL; 1584 case NVME_ZONE_STATE_OFFLINE: 1585 trace_pci_nvme_err_zone_is_offline(zslba); 1586 return NVME_ZONE_OFFLINE; 1587 case NVME_ZONE_STATE_READ_ONLY: 1588 trace_pci_nvme_err_zone_is_read_only(zslba); 1589 return NVME_ZONE_READ_ONLY; 1590 default: 1591 assert(false); 1592 } 1593 1594 return NVME_INTERNAL_DEV_ERROR; 1595 } 1596 1597 static uint16_t nvme_check_zone_write(NvmeNamespace *ns, NvmeZone *zone, 1598 uint64_t slba, uint32_t nlb) 1599 { 1600 uint64_t zcap = nvme_zone_wr_boundary(zone); 1601 uint16_t status; 1602 1603 status = nvme_check_zone_state_for_write(zone); 1604 if (status) { 1605 return status; 1606 } 1607 1608 if (unlikely(slba != zone->w_ptr)) { 1609 trace_pci_nvme_err_write_not_at_wp(slba, zone->d.zslba, zone->w_ptr); 1610 return NVME_ZONE_INVALID_WRITE; 1611 } 1612 1613 if (unlikely((slba + nlb) > zcap)) { 1614 trace_pci_nvme_err_zone_boundary(slba, nlb, zcap); 1615 return NVME_ZONE_BOUNDARY_ERROR; 1616 } 1617 1618 return NVME_SUCCESS; 1619 } 1620 1621 static uint16_t nvme_check_zone_state_for_read(NvmeZone *zone) 1622 { 1623 switch (nvme_get_zone_state(zone)) { 1624 case NVME_ZONE_STATE_EMPTY: 1625 case NVME_ZONE_STATE_IMPLICITLY_OPEN: 1626 case NVME_ZONE_STATE_EXPLICITLY_OPEN: 1627 case NVME_ZONE_STATE_FULL: 1628 case NVME_ZONE_STATE_CLOSED: 1629 case NVME_ZONE_STATE_READ_ONLY: 1630 return NVME_SUCCESS; 1631 case NVME_ZONE_STATE_OFFLINE: 1632 trace_pci_nvme_err_zone_is_offline(zone->d.zslba); 1633 return NVME_ZONE_OFFLINE; 1634 default: 1635 assert(false); 1636 } 1637 1638 return NVME_INTERNAL_DEV_ERROR; 1639 } 1640 1641 static uint16_t nvme_check_zone_read(NvmeNamespace *ns, uint64_t slba, 1642 uint32_t nlb) 1643 { 1644 NvmeZone *zone; 1645 uint64_t bndry, end; 1646 uint16_t status; 1647 1648 zone = nvme_get_zone_by_slba(ns, slba); 1649 assert(zone); 1650 1651 bndry = nvme_zone_rd_boundary(ns, zone); 1652 end = slba + nlb; 1653 1654 status = nvme_check_zone_state_for_read(zone); 1655 if (status) { 1656 ; 1657 } else if (unlikely(end > bndry)) { 1658 if (!ns->params.cross_zone_read) { 1659 status = NVME_ZONE_BOUNDARY_ERROR; 1660 } else { 1661 /* 1662 * Read across zone boundary - check that all subsequent 1663 * zones that are being read have an appropriate state. 1664 */ 1665 do { 1666 zone++; 1667 status = nvme_check_zone_state_for_read(zone); 1668 if (status) { 1669 break; 1670 } 1671 } while (end > nvme_zone_rd_boundary(ns, zone)); 1672 } 1673 } 1674 1675 return status; 1676 } 1677 1678 static uint16_t nvme_zrm_finish(NvmeNamespace *ns, NvmeZone *zone) 1679 { 1680 switch (nvme_get_zone_state(zone)) { 1681 case NVME_ZONE_STATE_FULL: 1682 return NVME_SUCCESS; 1683 1684 case NVME_ZONE_STATE_IMPLICITLY_OPEN: 1685 case NVME_ZONE_STATE_EXPLICITLY_OPEN: 1686 nvme_aor_dec_open(ns); 1687 /* fallthrough */ 1688 case NVME_ZONE_STATE_CLOSED: 1689 nvme_aor_dec_active(ns); 1690 /* fallthrough */ 1691 case NVME_ZONE_STATE_EMPTY: 1692 nvme_assign_zone_state(ns, zone, NVME_ZONE_STATE_FULL); 1693 return NVME_SUCCESS; 1694 1695 default: 1696 return NVME_ZONE_INVAL_TRANSITION; 1697 } 1698 } 1699 1700 static uint16_t nvme_zrm_close(NvmeNamespace *ns, NvmeZone *zone) 1701 { 1702 switch (nvme_get_zone_state(zone)) { 1703 case NVME_ZONE_STATE_EXPLICITLY_OPEN: 1704 case NVME_ZONE_STATE_IMPLICITLY_OPEN: 1705 nvme_aor_dec_open(ns); 1706 nvme_assign_zone_state(ns, zone, NVME_ZONE_STATE_CLOSED); 1707 /* fall through */ 1708 case NVME_ZONE_STATE_CLOSED: 1709 return NVME_SUCCESS; 1710 1711 default: 1712 return NVME_ZONE_INVAL_TRANSITION; 1713 } 1714 } 1715 1716 static uint16_t nvme_zrm_reset(NvmeNamespace *ns, NvmeZone *zone) 1717 { 1718 switch (nvme_get_zone_state(zone)) { 1719 case NVME_ZONE_STATE_EXPLICITLY_OPEN: 1720 case NVME_ZONE_STATE_IMPLICITLY_OPEN: 1721 nvme_aor_dec_open(ns); 1722 /* fallthrough */ 1723 case NVME_ZONE_STATE_CLOSED: 1724 nvme_aor_dec_active(ns); 1725 /* fallthrough */ 1726 case NVME_ZONE_STATE_FULL: 1727 zone->w_ptr = zone->d.zslba; 1728 zone->d.wp = zone->w_ptr; 1729 nvme_assign_zone_state(ns, zone, NVME_ZONE_STATE_EMPTY); 1730 /* fallthrough */ 1731 case NVME_ZONE_STATE_EMPTY: 1732 return NVME_SUCCESS; 1733 1734 default: 1735 return NVME_ZONE_INVAL_TRANSITION; 1736 } 1737 } 1738 1739 static void nvme_zrm_auto_transition_zone(NvmeNamespace *ns) 1740 { 1741 NvmeZone *zone; 1742 1743 if (ns->params.max_open_zones && 1744 ns->nr_open_zones == ns->params.max_open_zones) { 1745 zone = QTAILQ_FIRST(&ns->imp_open_zones); 1746 if (zone) { 1747 /* 1748 * Automatically close this implicitly open zone. 1749 */ 1750 QTAILQ_REMOVE(&ns->imp_open_zones, zone, entry); 1751 nvme_zrm_close(ns, zone); 1752 } 1753 } 1754 } 1755 1756 enum { 1757 NVME_ZRM_AUTO = 1 << 0, 1758 }; 1759 1760 static uint16_t nvme_zrm_open_flags(NvmeCtrl *n, NvmeNamespace *ns, 1761 NvmeZone *zone, int flags) 1762 { 1763 int act = 0; 1764 uint16_t status; 1765 1766 switch (nvme_get_zone_state(zone)) { 1767 case NVME_ZONE_STATE_EMPTY: 1768 act = 1; 1769 1770 /* fallthrough */ 1771 1772 case NVME_ZONE_STATE_CLOSED: 1773 if (n->params.auto_transition_zones) { 1774 nvme_zrm_auto_transition_zone(ns); 1775 } 1776 status = nvme_aor_check(ns, act, 1); 1777 if (status) { 1778 return status; 1779 } 1780 1781 if (act) { 1782 nvme_aor_inc_active(ns); 1783 } 1784 1785 nvme_aor_inc_open(ns); 1786 1787 if (flags & NVME_ZRM_AUTO) { 1788 nvme_assign_zone_state(ns, zone, NVME_ZONE_STATE_IMPLICITLY_OPEN); 1789 return NVME_SUCCESS; 1790 } 1791 1792 /* fallthrough */ 1793 1794 case NVME_ZONE_STATE_IMPLICITLY_OPEN: 1795 if (flags & NVME_ZRM_AUTO) { 1796 return NVME_SUCCESS; 1797 } 1798 1799 nvme_assign_zone_state(ns, zone, NVME_ZONE_STATE_EXPLICITLY_OPEN); 1800 1801 /* fallthrough */ 1802 1803 case NVME_ZONE_STATE_EXPLICITLY_OPEN: 1804 return NVME_SUCCESS; 1805 1806 default: 1807 return NVME_ZONE_INVAL_TRANSITION; 1808 } 1809 } 1810 1811 static inline uint16_t nvme_zrm_auto(NvmeCtrl *n, NvmeNamespace *ns, 1812 NvmeZone *zone) 1813 { 1814 return nvme_zrm_open_flags(n, ns, zone, NVME_ZRM_AUTO); 1815 } 1816 1817 static inline uint16_t nvme_zrm_open(NvmeCtrl *n, NvmeNamespace *ns, 1818 NvmeZone *zone) 1819 { 1820 return nvme_zrm_open_flags(n, ns, zone, 0); 1821 } 1822 1823 static void nvme_advance_zone_wp(NvmeNamespace *ns, NvmeZone *zone, 1824 uint32_t nlb) 1825 { 1826 zone->d.wp += nlb; 1827 1828 if (zone->d.wp == nvme_zone_wr_boundary(zone)) { 1829 nvme_zrm_finish(ns, zone); 1830 } 1831 } 1832 1833 static void nvme_finalize_zoned_write(NvmeNamespace *ns, NvmeRequest *req) 1834 { 1835 NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; 1836 NvmeZone *zone; 1837 uint64_t slba; 1838 uint32_t nlb; 1839 1840 slba = le64_to_cpu(rw->slba); 1841 nlb = le16_to_cpu(rw->nlb) + 1; 1842 zone = nvme_get_zone_by_slba(ns, slba); 1843 assert(zone); 1844 1845 nvme_advance_zone_wp(ns, zone, nlb); 1846 } 1847 1848 static inline bool nvme_is_write(NvmeRequest *req) 1849 { 1850 NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; 1851 1852 return rw->opcode == NVME_CMD_WRITE || 1853 rw->opcode == NVME_CMD_ZONE_APPEND || 1854 rw->opcode == NVME_CMD_WRITE_ZEROES; 1855 } 1856 1857 static AioContext *nvme_get_aio_context(BlockAIOCB *acb) 1858 { 1859 return qemu_get_aio_context(); 1860 } 1861 1862 static void nvme_misc_cb(void *opaque, int ret) 1863 { 1864 NvmeRequest *req = opaque; 1865 1866 trace_pci_nvme_misc_cb(nvme_cid(req)); 1867 1868 if (ret) { 1869 nvme_aio_err(req, ret); 1870 } 1871 1872 nvme_enqueue_req_completion(nvme_cq(req), req); 1873 } 1874 1875 void nvme_rw_complete_cb(void *opaque, int ret) 1876 { 1877 NvmeRequest *req = opaque; 1878 NvmeNamespace *ns = req->ns; 1879 BlockBackend *blk = ns->blkconf.blk; 1880 BlockAcctCookie *acct = &req->acct; 1881 BlockAcctStats *stats = blk_get_stats(blk); 1882 1883 trace_pci_nvme_rw_complete_cb(nvme_cid(req), blk_name(blk)); 1884 1885 if (ret) { 1886 block_acct_failed(stats, acct); 1887 nvme_aio_err(req, ret); 1888 } else { 1889 block_acct_done(stats, acct); 1890 } 1891 1892 if (ns->params.zoned && nvme_is_write(req)) { 1893 nvme_finalize_zoned_write(ns, req); 1894 } 1895 1896 nvme_enqueue_req_completion(nvme_cq(req), req); 1897 } 1898 1899 static void nvme_rw_cb(void *opaque, int ret) 1900 { 1901 NvmeRequest *req = opaque; 1902 NvmeNamespace *ns = req->ns; 1903 1904 BlockBackend *blk = ns->blkconf.blk; 1905 1906 trace_pci_nvme_rw_cb(nvme_cid(req), blk_name(blk)); 1907 1908 if (ret) { 1909 goto out; 1910 } 1911 1912 if (ns->lbaf.ms) { 1913 NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; 1914 uint64_t slba = le64_to_cpu(rw->slba); 1915 uint32_t nlb = (uint32_t)le16_to_cpu(rw->nlb) + 1; 1916 uint64_t offset = nvme_moff(ns, slba); 1917 1918 if (req->cmd.opcode == NVME_CMD_WRITE_ZEROES) { 1919 size_t mlen = nvme_m2b(ns, nlb); 1920 1921 req->aiocb = blk_aio_pwrite_zeroes(blk, offset, mlen, 1922 BDRV_REQ_MAY_UNMAP, 1923 nvme_rw_complete_cb, req); 1924 return; 1925 } 1926 1927 if (nvme_ns_ext(ns) || req->cmd.mptr) { 1928 uint16_t status; 1929 1930 nvme_sg_unmap(&req->sg); 1931 status = nvme_map_mdata(nvme_ctrl(req), nlb, req); 1932 if (status) { 1933 ret = -EFAULT; 1934 goto out; 1935 } 1936 1937 if (req->cmd.opcode == NVME_CMD_READ) { 1938 return nvme_blk_read(blk, offset, nvme_rw_complete_cb, req); 1939 } 1940 1941 return nvme_blk_write(blk, offset, nvme_rw_complete_cb, req); 1942 } 1943 } 1944 1945 out: 1946 nvme_rw_complete_cb(req, ret); 1947 } 1948 1949 static void nvme_verify_cb(void *opaque, int ret) 1950 { 1951 NvmeBounceContext *ctx = opaque; 1952 NvmeRequest *req = ctx->req; 1953 NvmeNamespace *ns = req->ns; 1954 BlockBackend *blk = ns->blkconf.blk; 1955 BlockAcctCookie *acct = &req->acct; 1956 BlockAcctStats *stats = blk_get_stats(blk); 1957 NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; 1958 uint64_t slba = le64_to_cpu(rw->slba); 1959 uint8_t prinfo = NVME_RW_PRINFO(le16_to_cpu(rw->control)); 1960 uint16_t apptag = le16_to_cpu(rw->apptag); 1961 uint16_t appmask = le16_to_cpu(rw->appmask); 1962 uint32_t reftag = le32_to_cpu(rw->reftag); 1963 uint16_t status; 1964 1965 trace_pci_nvme_verify_cb(nvme_cid(req), prinfo, apptag, appmask, reftag); 1966 1967 if (ret) { 1968 block_acct_failed(stats, acct); 1969 nvme_aio_err(req, ret); 1970 goto out; 1971 } 1972 1973 block_acct_done(stats, acct); 1974 1975 if (NVME_ID_NS_DPS_TYPE(ns->id_ns.dps)) { 1976 status = nvme_dif_mangle_mdata(ns, ctx->mdata.bounce, 1977 ctx->mdata.iov.size, slba); 1978 if (status) { 1979 req->status = status; 1980 goto out; 1981 } 1982 1983 req->status = nvme_dif_check(ns, ctx->data.bounce, ctx->data.iov.size, 1984 ctx->mdata.bounce, ctx->mdata.iov.size, 1985 prinfo, slba, apptag, appmask, &reftag); 1986 } 1987 1988 out: 1989 qemu_iovec_destroy(&ctx->data.iov); 1990 g_free(ctx->data.bounce); 1991 1992 qemu_iovec_destroy(&ctx->mdata.iov); 1993 g_free(ctx->mdata.bounce); 1994 1995 g_free(ctx); 1996 1997 nvme_enqueue_req_completion(nvme_cq(req), req); 1998 } 1999 2000 2001 static void nvme_verify_mdata_in_cb(void *opaque, int ret) 2002 { 2003 NvmeBounceContext *ctx = opaque; 2004 NvmeRequest *req = ctx->req; 2005 NvmeNamespace *ns = req->ns; 2006 NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; 2007 uint64_t slba = le64_to_cpu(rw->slba); 2008 uint32_t nlb = le16_to_cpu(rw->nlb) + 1; 2009 size_t mlen = nvme_m2b(ns, nlb); 2010 uint64_t offset = nvme_moff(ns, slba); 2011 BlockBackend *blk = ns->blkconf.blk; 2012 2013 trace_pci_nvme_verify_mdata_in_cb(nvme_cid(req), blk_name(blk)); 2014 2015 if (ret) { 2016 goto out; 2017 } 2018 2019 ctx->mdata.bounce = g_malloc(mlen); 2020 2021 qemu_iovec_reset(&ctx->mdata.iov); 2022 qemu_iovec_add(&ctx->mdata.iov, ctx->mdata.bounce, mlen); 2023 2024 req->aiocb = blk_aio_preadv(blk, offset, &ctx->mdata.iov, 0, 2025 nvme_verify_cb, ctx); 2026 return; 2027 2028 out: 2029 nvme_verify_cb(ctx, ret); 2030 } 2031 2032 struct nvme_compare_ctx { 2033 struct { 2034 QEMUIOVector iov; 2035 uint8_t *bounce; 2036 } data; 2037 2038 struct { 2039 QEMUIOVector iov; 2040 uint8_t *bounce; 2041 } mdata; 2042 }; 2043 2044 static void nvme_compare_mdata_cb(void *opaque, int ret) 2045 { 2046 NvmeRequest *req = opaque; 2047 NvmeNamespace *ns = req->ns; 2048 NvmeCtrl *n = nvme_ctrl(req); 2049 NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; 2050 uint8_t prinfo = NVME_RW_PRINFO(le16_to_cpu(rw->control)); 2051 uint16_t apptag = le16_to_cpu(rw->apptag); 2052 uint16_t appmask = le16_to_cpu(rw->appmask); 2053 uint32_t reftag = le32_to_cpu(rw->reftag); 2054 struct nvme_compare_ctx *ctx = req->opaque; 2055 g_autofree uint8_t *buf = NULL; 2056 BlockBackend *blk = ns->blkconf.blk; 2057 BlockAcctCookie *acct = &req->acct; 2058 BlockAcctStats *stats = blk_get_stats(blk); 2059 uint16_t status = NVME_SUCCESS; 2060 2061 trace_pci_nvme_compare_mdata_cb(nvme_cid(req)); 2062 2063 if (ret) { 2064 block_acct_failed(stats, acct); 2065 nvme_aio_err(req, ret); 2066 goto out; 2067 } 2068 2069 buf = g_malloc(ctx->mdata.iov.size); 2070 2071 status = nvme_bounce_mdata(n, buf, ctx->mdata.iov.size, 2072 NVME_TX_DIRECTION_TO_DEVICE, req); 2073 if (status) { 2074 req->status = status; 2075 goto out; 2076 } 2077 2078 if (NVME_ID_NS_DPS_TYPE(ns->id_ns.dps)) { 2079 uint64_t slba = le64_to_cpu(rw->slba); 2080 uint8_t *bufp; 2081 uint8_t *mbufp = ctx->mdata.bounce; 2082 uint8_t *end = mbufp + ctx->mdata.iov.size; 2083 int16_t pil = 0; 2084 2085 status = nvme_dif_check(ns, ctx->data.bounce, ctx->data.iov.size, 2086 ctx->mdata.bounce, ctx->mdata.iov.size, prinfo, 2087 slba, apptag, appmask, &reftag); 2088 if (status) { 2089 req->status = status; 2090 goto out; 2091 } 2092 2093 /* 2094 * When formatted with protection information, do not compare the DIF 2095 * tuple. 2096 */ 2097 if (!(ns->id_ns.dps & NVME_ID_NS_DPS_FIRST_EIGHT)) { 2098 pil = ns->lbaf.ms - sizeof(NvmeDifTuple); 2099 } 2100 2101 for (bufp = buf; mbufp < end; bufp += ns->lbaf.ms, mbufp += ns->lbaf.ms) { 2102 if (memcmp(bufp + pil, mbufp + pil, ns->lbaf.ms - pil)) { 2103 req->status = NVME_CMP_FAILURE; 2104 goto out; 2105 } 2106 } 2107 2108 goto out; 2109 } 2110 2111 if (memcmp(buf, ctx->mdata.bounce, ctx->mdata.iov.size)) { 2112 req->status = NVME_CMP_FAILURE; 2113 goto out; 2114 } 2115 2116 block_acct_done(stats, acct); 2117 2118 out: 2119 qemu_iovec_destroy(&ctx->data.iov); 2120 g_free(ctx->data.bounce); 2121 2122 qemu_iovec_destroy(&ctx->mdata.iov); 2123 g_free(ctx->mdata.bounce); 2124 2125 g_free(ctx); 2126 2127 nvme_enqueue_req_completion(nvme_cq(req), req); 2128 } 2129 2130 static void nvme_compare_data_cb(void *opaque, int ret) 2131 { 2132 NvmeRequest *req = opaque; 2133 NvmeCtrl *n = nvme_ctrl(req); 2134 NvmeNamespace *ns = req->ns; 2135 BlockBackend *blk = ns->blkconf.blk; 2136 BlockAcctCookie *acct = &req->acct; 2137 BlockAcctStats *stats = blk_get_stats(blk); 2138 2139 struct nvme_compare_ctx *ctx = req->opaque; 2140 g_autofree uint8_t *buf = NULL; 2141 uint16_t status; 2142 2143 trace_pci_nvme_compare_data_cb(nvme_cid(req)); 2144 2145 if (ret) { 2146 block_acct_failed(stats, acct); 2147 nvme_aio_err(req, ret); 2148 goto out; 2149 } 2150 2151 buf = g_malloc(ctx->data.iov.size); 2152 2153 status = nvme_bounce_data(n, buf, ctx->data.iov.size, 2154 NVME_TX_DIRECTION_TO_DEVICE, req); 2155 if (status) { 2156 req->status = status; 2157 goto out; 2158 } 2159 2160 if (memcmp(buf, ctx->data.bounce, ctx->data.iov.size)) { 2161 req->status = NVME_CMP_FAILURE; 2162 goto out; 2163 } 2164 2165 if (ns->lbaf.ms) { 2166 NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; 2167 uint64_t slba = le64_to_cpu(rw->slba); 2168 uint32_t nlb = le16_to_cpu(rw->nlb) + 1; 2169 size_t mlen = nvme_m2b(ns, nlb); 2170 uint64_t offset = nvme_moff(ns, slba); 2171 2172 ctx->mdata.bounce = g_malloc(mlen); 2173 2174 qemu_iovec_init(&ctx->mdata.iov, 1); 2175 qemu_iovec_add(&ctx->mdata.iov, ctx->mdata.bounce, mlen); 2176 2177 req->aiocb = blk_aio_preadv(blk, offset, &ctx->mdata.iov, 0, 2178 nvme_compare_mdata_cb, req); 2179 return; 2180 } 2181 2182 block_acct_done(stats, acct); 2183 2184 out: 2185 qemu_iovec_destroy(&ctx->data.iov); 2186 g_free(ctx->data.bounce); 2187 g_free(ctx); 2188 2189 nvme_enqueue_req_completion(nvme_cq(req), req); 2190 } 2191 2192 typedef struct NvmeDSMAIOCB { 2193 BlockAIOCB common; 2194 BlockAIOCB *aiocb; 2195 NvmeRequest *req; 2196 QEMUBH *bh; 2197 int ret; 2198 2199 NvmeDsmRange *range; 2200 unsigned int nr; 2201 unsigned int idx; 2202 } NvmeDSMAIOCB; 2203 2204 static void nvme_dsm_cancel(BlockAIOCB *aiocb) 2205 { 2206 NvmeDSMAIOCB *iocb = container_of(aiocb, NvmeDSMAIOCB, common); 2207 2208 /* break nvme_dsm_cb loop */ 2209 iocb->idx = iocb->nr; 2210 iocb->ret = -ECANCELED; 2211 2212 if (iocb->aiocb) { 2213 blk_aio_cancel_async(iocb->aiocb); 2214 iocb->aiocb = NULL; 2215 } else { 2216 /* 2217 * We only reach this if nvme_dsm_cancel() has already been called or 2218 * the command ran to completion and nvme_dsm_bh is scheduled to run. 2219 */ 2220 assert(iocb->idx == iocb->nr); 2221 } 2222 } 2223 2224 static const AIOCBInfo nvme_dsm_aiocb_info = { 2225 .aiocb_size = sizeof(NvmeDSMAIOCB), 2226 .cancel_async = nvme_dsm_cancel, 2227 }; 2228 2229 static void nvme_dsm_bh(void *opaque) 2230 { 2231 NvmeDSMAIOCB *iocb = opaque; 2232 2233 iocb->common.cb(iocb->common.opaque, iocb->ret); 2234 2235 qemu_bh_delete(iocb->bh); 2236 iocb->bh = NULL; 2237 qemu_aio_unref(iocb); 2238 } 2239 2240 static void nvme_dsm_cb(void *opaque, int ret); 2241 2242 static void nvme_dsm_md_cb(void *opaque, int ret) 2243 { 2244 NvmeDSMAIOCB *iocb = opaque; 2245 NvmeRequest *req = iocb->req; 2246 NvmeNamespace *ns = req->ns; 2247 NvmeDsmRange *range; 2248 uint64_t slba; 2249 uint32_t nlb; 2250 2251 if (ret < 0) { 2252 iocb->ret = ret; 2253 goto done; 2254 } 2255 2256 if (!ns->lbaf.ms) { 2257 nvme_dsm_cb(iocb, 0); 2258 return; 2259 } 2260 2261 range = &iocb->range[iocb->idx - 1]; 2262 slba = le64_to_cpu(range->slba); 2263 nlb = le32_to_cpu(range->nlb); 2264 2265 /* 2266 * Check that all block were discarded (zeroed); otherwise we do not zero 2267 * the metadata. 2268 */ 2269 2270 ret = nvme_block_status_all(ns, slba, nlb, BDRV_BLOCK_ZERO); 2271 if (ret) { 2272 if (ret < 0) { 2273 iocb->ret = ret; 2274 goto done; 2275 } 2276 2277 nvme_dsm_cb(iocb, 0); 2278 } 2279 2280 iocb->aiocb = blk_aio_pwrite_zeroes(ns->blkconf.blk, nvme_moff(ns, slba), 2281 nvme_m2b(ns, nlb), BDRV_REQ_MAY_UNMAP, 2282 nvme_dsm_cb, iocb); 2283 return; 2284 2285 done: 2286 iocb->aiocb = NULL; 2287 qemu_bh_schedule(iocb->bh); 2288 } 2289 2290 static void nvme_dsm_cb(void *opaque, int ret) 2291 { 2292 NvmeDSMAIOCB *iocb = opaque; 2293 NvmeRequest *req = iocb->req; 2294 NvmeCtrl *n = nvme_ctrl(req); 2295 NvmeNamespace *ns = req->ns; 2296 NvmeDsmRange *range; 2297 uint64_t slba; 2298 uint32_t nlb; 2299 2300 if (ret < 0) { 2301 iocb->ret = ret; 2302 goto done; 2303 } 2304 2305 next: 2306 if (iocb->idx == iocb->nr) { 2307 goto done; 2308 } 2309 2310 range = &iocb->range[iocb->idx++]; 2311 slba = le64_to_cpu(range->slba); 2312 nlb = le32_to_cpu(range->nlb); 2313 2314 trace_pci_nvme_dsm_deallocate(slba, nlb); 2315 2316 if (nlb > n->dmrsl) { 2317 trace_pci_nvme_dsm_single_range_limit_exceeded(nlb, n->dmrsl); 2318 goto next; 2319 } 2320 2321 if (nvme_check_bounds(ns, slba, nlb)) { 2322 trace_pci_nvme_err_invalid_lba_range(slba, nlb, 2323 ns->id_ns.nsze); 2324 goto next; 2325 } 2326 2327 iocb->aiocb = blk_aio_pdiscard(ns->blkconf.blk, nvme_l2b(ns, slba), 2328 nvme_l2b(ns, nlb), 2329 nvme_dsm_md_cb, iocb); 2330 return; 2331 2332 done: 2333 iocb->aiocb = NULL; 2334 qemu_bh_schedule(iocb->bh); 2335 } 2336 2337 static uint16_t nvme_dsm(NvmeCtrl *n, NvmeRequest *req) 2338 { 2339 NvmeNamespace *ns = req->ns; 2340 NvmeDsmCmd *dsm = (NvmeDsmCmd *) &req->cmd; 2341 uint32_t attr = le32_to_cpu(dsm->attributes); 2342 uint32_t nr = (le32_to_cpu(dsm->nr) & 0xff) + 1; 2343 uint16_t status = NVME_SUCCESS; 2344 2345 trace_pci_nvme_dsm(nr, attr); 2346 2347 if (attr & NVME_DSMGMT_AD) { 2348 NvmeDSMAIOCB *iocb = blk_aio_get(&nvme_dsm_aiocb_info, ns->blkconf.blk, 2349 nvme_misc_cb, req); 2350 2351 iocb->req = req; 2352 iocb->bh = qemu_bh_new(nvme_dsm_bh, iocb); 2353 iocb->ret = 0; 2354 iocb->range = g_new(NvmeDsmRange, nr); 2355 iocb->nr = nr; 2356 iocb->idx = 0; 2357 2358 status = nvme_h2c(n, (uint8_t *)iocb->range, sizeof(NvmeDsmRange) * nr, 2359 req); 2360 if (status) { 2361 return status; 2362 } 2363 2364 req->aiocb = &iocb->common; 2365 nvme_dsm_cb(iocb, 0); 2366 2367 return NVME_NO_COMPLETE; 2368 } 2369 2370 return status; 2371 } 2372 2373 static uint16_t nvme_verify(NvmeCtrl *n, NvmeRequest *req) 2374 { 2375 NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; 2376 NvmeNamespace *ns = req->ns; 2377 BlockBackend *blk = ns->blkconf.blk; 2378 uint64_t slba = le64_to_cpu(rw->slba); 2379 uint32_t nlb = le16_to_cpu(rw->nlb) + 1; 2380 size_t len = nvme_l2b(ns, nlb); 2381 int64_t offset = nvme_l2b(ns, slba); 2382 uint8_t prinfo = NVME_RW_PRINFO(le16_to_cpu(rw->control)); 2383 uint32_t reftag = le32_to_cpu(rw->reftag); 2384 NvmeBounceContext *ctx = NULL; 2385 uint16_t status; 2386 2387 trace_pci_nvme_verify(nvme_cid(req), nvme_nsid(ns), slba, nlb); 2388 2389 if (NVME_ID_NS_DPS_TYPE(ns->id_ns.dps)) { 2390 status = nvme_check_prinfo(ns, prinfo, slba, reftag); 2391 if (status) { 2392 return status; 2393 } 2394 2395 if (prinfo & NVME_PRINFO_PRACT) { 2396 return NVME_INVALID_PROT_INFO | NVME_DNR; 2397 } 2398 } 2399 2400 if (len > n->page_size << n->params.vsl) { 2401 return NVME_INVALID_FIELD | NVME_DNR; 2402 } 2403 2404 status = nvme_check_bounds(ns, slba, nlb); 2405 if (status) { 2406 return status; 2407 } 2408 2409 if (NVME_ERR_REC_DULBE(ns->features.err_rec)) { 2410 status = nvme_check_dulbe(ns, slba, nlb); 2411 if (status) { 2412 return status; 2413 } 2414 } 2415 2416 ctx = g_new0(NvmeBounceContext, 1); 2417 ctx->req = req; 2418 2419 ctx->data.bounce = g_malloc(len); 2420 2421 qemu_iovec_init(&ctx->data.iov, 1); 2422 qemu_iovec_add(&ctx->data.iov, ctx->data.bounce, len); 2423 2424 block_acct_start(blk_get_stats(blk), &req->acct, ctx->data.iov.size, 2425 BLOCK_ACCT_READ); 2426 2427 req->aiocb = blk_aio_preadv(ns->blkconf.blk, offset, &ctx->data.iov, 0, 2428 nvme_verify_mdata_in_cb, ctx); 2429 return NVME_NO_COMPLETE; 2430 } 2431 2432 typedef struct NvmeCopyAIOCB { 2433 BlockAIOCB common; 2434 BlockAIOCB *aiocb; 2435 NvmeRequest *req; 2436 QEMUBH *bh; 2437 int ret; 2438 2439 NvmeCopySourceRange *ranges; 2440 int nr; 2441 int idx; 2442 2443 uint8_t *bounce; 2444 QEMUIOVector iov; 2445 struct { 2446 BlockAcctCookie read; 2447 BlockAcctCookie write; 2448 } acct; 2449 2450 uint32_t reftag; 2451 uint64_t slba; 2452 2453 NvmeZone *zone; 2454 } NvmeCopyAIOCB; 2455 2456 static void nvme_copy_cancel(BlockAIOCB *aiocb) 2457 { 2458 NvmeCopyAIOCB *iocb = container_of(aiocb, NvmeCopyAIOCB, common); 2459 2460 iocb->ret = -ECANCELED; 2461 2462 if (iocb->aiocb) { 2463 blk_aio_cancel_async(iocb->aiocb); 2464 iocb->aiocb = NULL; 2465 } 2466 } 2467 2468 static const AIOCBInfo nvme_copy_aiocb_info = { 2469 .aiocb_size = sizeof(NvmeCopyAIOCB), 2470 .cancel_async = nvme_copy_cancel, 2471 }; 2472 2473 static void nvme_copy_bh(void *opaque) 2474 { 2475 NvmeCopyAIOCB *iocb = opaque; 2476 NvmeRequest *req = iocb->req; 2477 NvmeNamespace *ns = req->ns; 2478 BlockAcctStats *stats = blk_get_stats(ns->blkconf.blk); 2479 2480 if (iocb->idx != iocb->nr) { 2481 req->cqe.result = cpu_to_le32(iocb->idx); 2482 } 2483 2484 qemu_iovec_destroy(&iocb->iov); 2485 g_free(iocb->bounce); 2486 2487 qemu_bh_delete(iocb->bh); 2488 iocb->bh = NULL; 2489 2490 if (iocb->ret < 0) { 2491 block_acct_failed(stats, &iocb->acct.read); 2492 block_acct_failed(stats, &iocb->acct.write); 2493 } else { 2494 block_acct_done(stats, &iocb->acct.read); 2495 block_acct_done(stats, &iocb->acct.write); 2496 } 2497 2498 iocb->common.cb(iocb->common.opaque, iocb->ret); 2499 qemu_aio_unref(iocb); 2500 } 2501 2502 static void nvme_copy_cb(void *opaque, int ret); 2503 2504 static void nvme_copy_out_completed_cb(void *opaque, int ret) 2505 { 2506 NvmeCopyAIOCB *iocb = opaque; 2507 NvmeRequest *req = iocb->req; 2508 NvmeNamespace *ns = req->ns; 2509 NvmeCopySourceRange *range = &iocb->ranges[iocb->idx]; 2510 uint32_t nlb = le32_to_cpu(range->nlb) + 1; 2511 2512 if (ret < 0) { 2513 iocb->ret = ret; 2514 goto out; 2515 } else if (iocb->ret < 0) { 2516 goto out; 2517 } 2518 2519 if (ns->params.zoned) { 2520 nvme_advance_zone_wp(ns, iocb->zone, nlb); 2521 } 2522 2523 iocb->idx++; 2524 iocb->slba += nlb; 2525 out: 2526 nvme_copy_cb(iocb, iocb->ret); 2527 } 2528 2529 static void nvme_copy_out_cb(void *opaque, int ret) 2530 { 2531 NvmeCopyAIOCB *iocb = opaque; 2532 NvmeRequest *req = iocb->req; 2533 NvmeNamespace *ns = req->ns; 2534 NvmeCopySourceRange *range; 2535 uint32_t nlb; 2536 size_t mlen; 2537 uint8_t *mbounce; 2538 2539 if (ret < 0) { 2540 iocb->ret = ret; 2541 goto out; 2542 } else if (iocb->ret < 0) { 2543 goto out; 2544 } 2545 2546 if (!ns->lbaf.ms) { 2547 nvme_copy_out_completed_cb(iocb, 0); 2548 return; 2549 } 2550 2551 range = &iocb->ranges[iocb->idx]; 2552 nlb = le32_to_cpu(range->nlb) + 1; 2553 2554 mlen = nvme_m2b(ns, nlb); 2555 mbounce = iocb->bounce + nvme_l2b(ns, nlb); 2556 2557 qemu_iovec_reset(&iocb->iov); 2558 qemu_iovec_add(&iocb->iov, mbounce, mlen); 2559 2560 iocb->aiocb = blk_aio_pwritev(ns->blkconf.blk, nvme_moff(ns, iocb->slba), 2561 &iocb->iov, 0, nvme_copy_out_completed_cb, 2562 iocb); 2563 2564 return; 2565 2566 out: 2567 nvme_copy_cb(iocb, ret); 2568 } 2569 2570 static void nvme_copy_in_completed_cb(void *opaque, int ret) 2571 { 2572 NvmeCopyAIOCB *iocb = opaque; 2573 NvmeRequest *req = iocb->req; 2574 NvmeNamespace *ns = req->ns; 2575 NvmeCopySourceRange *range; 2576 uint32_t nlb; 2577 size_t len; 2578 uint16_t status; 2579 2580 if (ret < 0) { 2581 iocb->ret = ret; 2582 goto out; 2583 } else if (iocb->ret < 0) { 2584 goto out; 2585 } 2586 2587 range = &iocb->ranges[iocb->idx]; 2588 nlb = le32_to_cpu(range->nlb) + 1; 2589 len = nvme_l2b(ns, nlb); 2590 2591 trace_pci_nvme_copy_out(iocb->slba, nlb); 2592 2593 if (NVME_ID_NS_DPS_TYPE(ns->id_ns.dps)) { 2594 NvmeCopyCmd *copy = (NvmeCopyCmd *)&req->cmd; 2595 2596 uint16_t prinfor = ((copy->control[0] >> 4) & 0xf); 2597 uint16_t prinfow = ((copy->control[2] >> 2) & 0xf); 2598 2599 uint16_t apptag = le16_to_cpu(range->apptag); 2600 uint16_t appmask = le16_to_cpu(range->appmask); 2601 uint32_t reftag = le32_to_cpu(range->reftag); 2602 2603 uint64_t slba = le64_to_cpu(range->slba); 2604 size_t mlen = nvme_m2b(ns, nlb); 2605 uint8_t *mbounce = iocb->bounce + nvme_l2b(ns, nlb); 2606 2607 status = nvme_dif_check(ns, iocb->bounce, len, mbounce, mlen, prinfor, 2608 slba, apptag, appmask, &reftag); 2609 if (status) { 2610 goto invalid; 2611 } 2612 2613 apptag = le16_to_cpu(copy->apptag); 2614 appmask = le16_to_cpu(copy->appmask); 2615 2616 if (prinfow & NVME_PRINFO_PRACT) { 2617 status = nvme_check_prinfo(ns, prinfow, iocb->slba, iocb->reftag); 2618 if (status) { 2619 goto invalid; 2620 } 2621 2622 nvme_dif_pract_generate_dif(ns, iocb->bounce, len, mbounce, mlen, 2623 apptag, &iocb->reftag); 2624 } else { 2625 status = nvme_dif_check(ns, iocb->bounce, len, mbounce, mlen, 2626 prinfow, iocb->slba, apptag, appmask, 2627 &iocb->reftag); 2628 if (status) { 2629 goto invalid; 2630 } 2631 } 2632 } 2633 2634 status = nvme_check_bounds(ns, iocb->slba, nlb); 2635 if (status) { 2636 goto invalid; 2637 } 2638 2639 if (ns->params.zoned) { 2640 status = nvme_check_zone_write(ns, iocb->zone, iocb->slba, nlb); 2641 if (status) { 2642 goto invalid; 2643 } 2644 2645 iocb->zone->w_ptr += nlb; 2646 } 2647 2648 qemu_iovec_reset(&iocb->iov); 2649 qemu_iovec_add(&iocb->iov, iocb->bounce, len); 2650 2651 iocb->aiocb = blk_aio_pwritev(ns->blkconf.blk, nvme_l2b(ns, iocb->slba), 2652 &iocb->iov, 0, nvme_copy_out_cb, iocb); 2653 2654 return; 2655 2656 invalid: 2657 req->status = status; 2658 iocb->aiocb = NULL; 2659 if (iocb->bh) { 2660 qemu_bh_schedule(iocb->bh); 2661 } 2662 2663 return; 2664 2665 out: 2666 nvme_copy_cb(iocb, ret); 2667 } 2668 2669 static void nvme_copy_in_cb(void *opaque, int ret) 2670 { 2671 NvmeCopyAIOCB *iocb = opaque; 2672 NvmeRequest *req = iocb->req; 2673 NvmeNamespace *ns = req->ns; 2674 NvmeCopySourceRange *range; 2675 uint64_t slba; 2676 uint32_t nlb; 2677 2678 if (ret < 0) { 2679 iocb->ret = ret; 2680 goto out; 2681 } else if (iocb->ret < 0) { 2682 goto out; 2683 } 2684 2685 if (!ns->lbaf.ms) { 2686 nvme_copy_in_completed_cb(iocb, 0); 2687 return; 2688 } 2689 2690 range = &iocb->ranges[iocb->idx]; 2691 slba = le64_to_cpu(range->slba); 2692 nlb = le32_to_cpu(range->nlb) + 1; 2693 2694 qemu_iovec_reset(&iocb->iov); 2695 qemu_iovec_add(&iocb->iov, iocb->bounce + nvme_l2b(ns, nlb), 2696 nvme_m2b(ns, nlb)); 2697 2698 iocb->aiocb = blk_aio_preadv(ns->blkconf.blk, nvme_moff(ns, slba), 2699 &iocb->iov, 0, nvme_copy_in_completed_cb, 2700 iocb); 2701 return; 2702 2703 out: 2704 nvme_copy_cb(iocb, iocb->ret); 2705 } 2706 2707 static void nvme_copy_cb(void *opaque, int ret) 2708 { 2709 NvmeCopyAIOCB *iocb = opaque; 2710 NvmeRequest *req = iocb->req; 2711 NvmeNamespace *ns = req->ns; 2712 NvmeCopySourceRange *range; 2713 uint64_t slba; 2714 uint32_t nlb; 2715 size_t len; 2716 uint16_t status; 2717 2718 if (ret < 0) { 2719 iocb->ret = ret; 2720 goto done; 2721 } else if (iocb->ret < 0) { 2722 goto done; 2723 } 2724 2725 if (iocb->idx == iocb->nr) { 2726 goto done; 2727 } 2728 2729 range = &iocb->ranges[iocb->idx]; 2730 slba = le64_to_cpu(range->slba); 2731 nlb = le32_to_cpu(range->nlb) + 1; 2732 len = nvme_l2b(ns, nlb); 2733 2734 trace_pci_nvme_copy_source_range(slba, nlb); 2735 2736 if (nlb > le16_to_cpu(ns->id_ns.mssrl)) { 2737 status = NVME_CMD_SIZE_LIMIT | NVME_DNR; 2738 goto invalid; 2739 } 2740 2741 status = nvme_check_bounds(ns, slba, nlb); 2742 if (status) { 2743 goto invalid; 2744 } 2745 2746 if (NVME_ERR_REC_DULBE(ns->features.err_rec)) { 2747 status = nvme_check_dulbe(ns, slba, nlb); 2748 if (status) { 2749 goto invalid; 2750 } 2751 } 2752 2753 if (ns->params.zoned) { 2754 status = nvme_check_zone_read(ns, slba, nlb); 2755 if (status) { 2756 goto invalid; 2757 } 2758 } 2759 2760 qemu_iovec_reset(&iocb->iov); 2761 qemu_iovec_add(&iocb->iov, iocb->bounce, len); 2762 2763 iocb->aiocb = blk_aio_preadv(ns->blkconf.blk, nvme_l2b(ns, slba), 2764 &iocb->iov, 0, nvme_copy_in_cb, iocb); 2765 return; 2766 2767 invalid: 2768 req->status = status; 2769 done: 2770 iocb->aiocb = NULL; 2771 if (iocb->bh) { 2772 qemu_bh_schedule(iocb->bh); 2773 } 2774 } 2775 2776 2777 static uint16_t nvme_copy(NvmeCtrl *n, NvmeRequest *req) 2778 { 2779 NvmeNamespace *ns = req->ns; 2780 NvmeCopyCmd *copy = (NvmeCopyCmd *)&req->cmd; 2781 NvmeCopyAIOCB *iocb = blk_aio_get(&nvme_copy_aiocb_info, ns->blkconf.blk, 2782 nvme_misc_cb, req); 2783 uint16_t nr = copy->nr + 1; 2784 uint8_t format = copy->control[0] & 0xf; 2785 uint16_t prinfor = ((copy->control[0] >> 4) & 0xf); 2786 uint16_t prinfow = ((copy->control[2] >> 2) & 0xf); 2787 2788 uint16_t status; 2789 2790 trace_pci_nvme_copy(nvme_cid(req), nvme_nsid(ns), nr, format); 2791 2792 iocb->ranges = NULL; 2793 iocb->zone = NULL; 2794 2795 if (NVME_ID_NS_DPS_TYPE(ns->id_ns.dps) && 2796 ((prinfor & NVME_PRINFO_PRACT) != (prinfow & NVME_PRINFO_PRACT))) { 2797 status = NVME_INVALID_FIELD | NVME_DNR; 2798 goto invalid; 2799 } 2800 2801 if (!(n->id_ctrl.ocfs & (1 << format))) { 2802 trace_pci_nvme_err_copy_invalid_format(format); 2803 status = NVME_INVALID_FIELD | NVME_DNR; 2804 goto invalid; 2805 } 2806 2807 if (nr > ns->id_ns.msrc + 1) { 2808 status = NVME_CMD_SIZE_LIMIT | NVME_DNR; 2809 goto invalid; 2810 } 2811 2812 iocb->ranges = g_new(NvmeCopySourceRange, nr); 2813 2814 status = nvme_h2c(n, (uint8_t *)iocb->ranges, 2815 sizeof(NvmeCopySourceRange) * nr, req); 2816 if (status) { 2817 goto invalid; 2818 } 2819 2820 iocb->slba = le64_to_cpu(copy->sdlba); 2821 2822 if (ns->params.zoned) { 2823 iocb->zone = nvme_get_zone_by_slba(ns, iocb->slba); 2824 if (!iocb->zone) { 2825 status = NVME_LBA_RANGE | NVME_DNR; 2826 goto invalid; 2827 } 2828 2829 status = nvme_zrm_auto(n, ns, iocb->zone); 2830 if (status) { 2831 goto invalid; 2832 } 2833 } 2834 2835 iocb->req = req; 2836 iocb->bh = qemu_bh_new(nvme_copy_bh, iocb); 2837 iocb->ret = 0; 2838 iocb->nr = nr; 2839 iocb->idx = 0; 2840 iocb->reftag = le32_to_cpu(copy->reftag); 2841 iocb->bounce = g_malloc_n(le16_to_cpu(ns->id_ns.mssrl), 2842 ns->lbasz + ns->lbaf.ms); 2843 2844 qemu_iovec_init(&iocb->iov, 1); 2845 2846 block_acct_start(blk_get_stats(ns->blkconf.blk), &iocb->acct.read, 0, 2847 BLOCK_ACCT_READ); 2848 block_acct_start(blk_get_stats(ns->blkconf.blk), &iocb->acct.write, 0, 2849 BLOCK_ACCT_WRITE); 2850 2851 req->aiocb = &iocb->common; 2852 nvme_copy_cb(iocb, 0); 2853 2854 return NVME_NO_COMPLETE; 2855 2856 invalid: 2857 g_free(iocb->ranges); 2858 qemu_aio_unref(iocb); 2859 return status; 2860 } 2861 2862 static uint16_t nvme_compare(NvmeCtrl *n, NvmeRequest *req) 2863 { 2864 NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; 2865 NvmeNamespace *ns = req->ns; 2866 BlockBackend *blk = ns->blkconf.blk; 2867 uint64_t slba = le64_to_cpu(rw->slba); 2868 uint32_t nlb = le16_to_cpu(rw->nlb) + 1; 2869 uint8_t prinfo = NVME_RW_PRINFO(le16_to_cpu(rw->control)); 2870 size_t data_len = nvme_l2b(ns, nlb); 2871 size_t len = data_len; 2872 int64_t offset = nvme_l2b(ns, slba); 2873 struct nvme_compare_ctx *ctx = NULL; 2874 uint16_t status; 2875 2876 trace_pci_nvme_compare(nvme_cid(req), nvme_nsid(ns), slba, nlb); 2877 2878 if (NVME_ID_NS_DPS_TYPE(ns->id_ns.dps) && (prinfo & NVME_PRINFO_PRACT)) { 2879 return NVME_INVALID_PROT_INFO | NVME_DNR; 2880 } 2881 2882 if (nvme_ns_ext(ns)) { 2883 len += nvme_m2b(ns, nlb); 2884 } 2885 2886 status = nvme_check_mdts(n, len); 2887 if (status) { 2888 return status; 2889 } 2890 2891 status = nvme_check_bounds(ns, slba, nlb); 2892 if (status) { 2893 return status; 2894 } 2895 2896 if (NVME_ERR_REC_DULBE(ns->features.err_rec)) { 2897 status = nvme_check_dulbe(ns, slba, nlb); 2898 if (status) { 2899 return status; 2900 } 2901 } 2902 2903 status = nvme_map_dptr(n, &req->sg, len, &req->cmd); 2904 if (status) { 2905 return status; 2906 } 2907 2908 ctx = g_new(struct nvme_compare_ctx, 1); 2909 ctx->data.bounce = g_malloc(data_len); 2910 2911 req->opaque = ctx; 2912 2913 qemu_iovec_init(&ctx->data.iov, 1); 2914 qemu_iovec_add(&ctx->data.iov, ctx->data.bounce, data_len); 2915 2916 block_acct_start(blk_get_stats(blk), &req->acct, data_len, 2917 BLOCK_ACCT_READ); 2918 req->aiocb = blk_aio_preadv(blk, offset, &ctx->data.iov, 0, 2919 nvme_compare_data_cb, req); 2920 2921 return NVME_NO_COMPLETE; 2922 } 2923 2924 typedef struct NvmeFlushAIOCB { 2925 BlockAIOCB common; 2926 BlockAIOCB *aiocb; 2927 NvmeRequest *req; 2928 QEMUBH *bh; 2929 int ret; 2930 2931 NvmeNamespace *ns; 2932 uint32_t nsid; 2933 bool broadcast; 2934 } NvmeFlushAIOCB; 2935 2936 static void nvme_flush_cancel(BlockAIOCB *acb) 2937 { 2938 NvmeFlushAIOCB *iocb = container_of(acb, NvmeFlushAIOCB, common); 2939 2940 iocb->ret = -ECANCELED; 2941 2942 if (iocb->aiocb) { 2943 blk_aio_cancel_async(iocb->aiocb); 2944 } 2945 } 2946 2947 static const AIOCBInfo nvme_flush_aiocb_info = { 2948 .aiocb_size = sizeof(NvmeFlushAIOCB), 2949 .cancel_async = nvme_flush_cancel, 2950 .get_aio_context = nvme_get_aio_context, 2951 }; 2952 2953 static void nvme_flush_ns_cb(void *opaque, int ret) 2954 { 2955 NvmeFlushAIOCB *iocb = opaque; 2956 NvmeNamespace *ns = iocb->ns; 2957 2958 if (ret < 0) { 2959 iocb->ret = ret; 2960 goto out; 2961 } else if (iocb->ret < 0) { 2962 goto out; 2963 } 2964 2965 if (ns) { 2966 trace_pci_nvme_flush_ns(iocb->nsid); 2967 2968 iocb->ns = NULL; 2969 iocb->aiocb = blk_aio_flush(ns->blkconf.blk, nvme_flush_ns_cb, iocb); 2970 return; 2971 } 2972 2973 out: 2974 iocb->aiocb = NULL; 2975 qemu_bh_schedule(iocb->bh); 2976 } 2977 2978 static void nvme_flush_bh(void *opaque) 2979 { 2980 NvmeFlushAIOCB *iocb = opaque; 2981 NvmeRequest *req = iocb->req; 2982 NvmeCtrl *n = nvme_ctrl(req); 2983 int i; 2984 2985 if (iocb->ret < 0) { 2986 goto done; 2987 } 2988 2989 if (iocb->broadcast) { 2990 for (i = iocb->nsid + 1; i <= NVME_MAX_NAMESPACES; i++) { 2991 iocb->ns = nvme_ns(n, i); 2992 if (iocb->ns) { 2993 iocb->nsid = i; 2994 break; 2995 } 2996 } 2997 } 2998 2999 if (!iocb->ns) { 3000 goto done; 3001 } 3002 3003 nvme_flush_ns_cb(iocb, 0); 3004 return; 3005 3006 done: 3007 qemu_bh_delete(iocb->bh); 3008 iocb->bh = NULL; 3009 3010 iocb->common.cb(iocb->common.opaque, iocb->ret); 3011 3012 qemu_aio_unref(iocb); 3013 3014 return; 3015 } 3016 3017 static uint16_t nvme_flush(NvmeCtrl *n, NvmeRequest *req) 3018 { 3019 NvmeFlushAIOCB *iocb; 3020 uint32_t nsid = le32_to_cpu(req->cmd.nsid); 3021 uint16_t status; 3022 3023 iocb = qemu_aio_get(&nvme_flush_aiocb_info, NULL, nvme_misc_cb, req); 3024 3025 iocb->req = req; 3026 iocb->bh = qemu_bh_new(nvme_flush_bh, iocb); 3027 iocb->ret = 0; 3028 iocb->ns = NULL; 3029 iocb->nsid = 0; 3030 iocb->broadcast = (nsid == NVME_NSID_BROADCAST); 3031 3032 if (!iocb->broadcast) { 3033 if (!nvme_nsid_valid(n, nsid)) { 3034 status = NVME_INVALID_NSID | NVME_DNR; 3035 goto out; 3036 } 3037 3038 iocb->ns = nvme_ns(n, nsid); 3039 if (!iocb->ns) { 3040 status = NVME_INVALID_FIELD | NVME_DNR; 3041 goto out; 3042 } 3043 3044 iocb->nsid = nsid; 3045 } 3046 3047 req->aiocb = &iocb->common; 3048 qemu_bh_schedule(iocb->bh); 3049 3050 return NVME_NO_COMPLETE; 3051 3052 out: 3053 qemu_bh_delete(iocb->bh); 3054 iocb->bh = NULL; 3055 qemu_aio_unref(iocb); 3056 3057 return status; 3058 } 3059 3060 static uint16_t nvme_read(NvmeCtrl *n, NvmeRequest *req) 3061 { 3062 NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; 3063 NvmeNamespace *ns = req->ns; 3064 uint64_t slba = le64_to_cpu(rw->slba); 3065 uint32_t nlb = (uint32_t)le16_to_cpu(rw->nlb) + 1; 3066 uint8_t prinfo = NVME_RW_PRINFO(le16_to_cpu(rw->control)); 3067 uint64_t data_size = nvme_l2b(ns, nlb); 3068 uint64_t mapped_size = data_size; 3069 uint64_t data_offset; 3070 BlockBackend *blk = ns->blkconf.blk; 3071 uint16_t status; 3072 3073 if (nvme_ns_ext(ns)) { 3074 mapped_size += nvme_m2b(ns, nlb); 3075 3076 if (NVME_ID_NS_DPS_TYPE(ns->id_ns.dps)) { 3077 bool pract = prinfo & NVME_PRINFO_PRACT; 3078 3079 if (pract && ns->lbaf.ms == 8) { 3080 mapped_size = data_size; 3081 } 3082 } 3083 } 3084 3085 trace_pci_nvme_read(nvme_cid(req), nvme_nsid(ns), nlb, mapped_size, slba); 3086 3087 status = nvme_check_mdts(n, mapped_size); 3088 if (status) { 3089 goto invalid; 3090 } 3091 3092 status = nvme_check_bounds(ns, slba, nlb); 3093 if (status) { 3094 goto invalid; 3095 } 3096 3097 if (ns->params.zoned) { 3098 status = nvme_check_zone_read(ns, slba, nlb); 3099 if (status) { 3100 trace_pci_nvme_err_zone_read_not_ok(slba, nlb, status); 3101 goto invalid; 3102 } 3103 } 3104 3105 if (NVME_ERR_REC_DULBE(ns->features.err_rec)) { 3106 status = nvme_check_dulbe(ns, slba, nlb); 3107 if (status) { 3108 goto invalid; 3109 } 3110 } 3111 3112 if (NVME_ID_NS_DPS_TYPE(ns->id_ns.dps)) { 3113 return nvme_dif_rw(n, req); 3114 } 3115 3116 status = nvme_map_data(n, nlb, req); 3117 if (status) { 3118 goto invalid; 3119 } 3120 3121 data_offset = nvme_l2b(ns, slba); 3122 3123 block_acct_start(blk_get_stats(blk), &req->acct, data_size, 3124 BLOCK_ACCT_READ); 3125 nvme_blk_read(blk, data_offset, nvme_rw_cb, req); 3126 return NVME_NO_COMPLETE; 3127 3128 invalid: 3129 block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ); 3130 return status | NVME_DNR; 3131 } 3132 3133 static uint16_t nvme_do_write(NvmeCtrl *n, NvmeRequest *req, bool append, 3134 bool wrz) 3135 { 3136 NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; 3137 NvmeNamespace *ns = req->ns; 3138 uint64_t slba = le64_to_cpu(rw->slba); 3139 uint32_t nlb = (uint32_t)le16_to_cpu(rw->nlb) + 1; 3140 uint16_t ctrl = le16_to_cpu(rw->control); 3141 uint8_t prinfo = NVME_RW_PRINFO(ctrl); 3142 uint64_t data_size = nvme_l2b(ns, nlb); 3143 uint64_t mapped_size = data_size; 3144 uint64_t data_offset; 3145 NvmeZone *zone; 3146 NvmeZonedResult *res = (NvmeZonedResult *)&req->cqe; 3147 BlockBackend *blk = ns->blkconf.blk; 3148 uint16_t status; 3149 3150 if (nvme_ns_ext(ns)) { 3151 mapped_size += nvme_m2b(ns, nlb); 3152 3153 if (NVME_ID_NS_DPS_TYPE(ns->id_ns.dps)) { 3154 bool pract = prinfo & NVME_PRINFO_PRACT; 3155 3156 if (pract && ns->lbaf.ms == 8) { 3157 mapped_size -= nvme_m2b(ns, nlb); 3158 } 3159 } 3160 } 3161 3162 trace_pci_nvme_write(nvme_cid(req), nvme_io_opc_str(rw->opcode), 3163 nvme_nsid(ns), nlb, mapped_size, slba); 3164 3165 if (!wrz) { 3166 status = nvme_check_mdts(n, mapped_size); 3167 if (status) { 3168 goto invalid; 3169 } 3170 } 3171 3172 status = nvme_check_bounds(ns, slba, nlb); 3173 if (status) { 3174 goto invalid; 3175 } 3176 3177 if (ns->params.zoned) { 3178 zone = nvme_get_zone_by_slba(ns, slba); 3179 assert(zone); 3180 3181 if (append) { 3182 bool piremap = !!(ctrl & NVME_RW_PIREMAP); 3183 3184 if (unlikely(slba != zone->d.zslba)) { 3185 trace_pci_nvme_err_append_not_at_start(slba, zone->d.zslba); 3186 status = NVME_INVALID_FIELD; 3187 goto invalid; 3188 } 3189 3190 if (n->params.zasl && 3191 data_size > (uint64_t)n->page_size << n->params.zasl) { 3192 trace_pci_nvme_err_zasl(data_size); 3193 return NVME_INVALID_FIELD | NVME_DNR; 3194 } 3195 3196 slba = zone->w_ptr; 3197 rw->slba = cpu_to_le64(slba); 3198 res->slba = cpu_to_le64(slba); 3199 3200 switch (NVME_ID_NS_DPS_TYPE(ns->id_ns.dps)) { 3201 case NVME_ID_NS_DPS_TYPE_1: 3202 if (!piremap) { 3203 return NVME_INVALID_PROT_INFO | NVME_DNR; 3204 } 3205 3206 /* fallthrough */ 3207 3208 case NVME_ID_NS_DPS_TYPE_2: 3209 if (piremap) { 3210 uint32_t reftag = le32_to_cpu(rw->reftag); 3211 rw->reftag = cpu_to_le32(reftag + (slba - zone->d.zslba)); 3212 } 3213 3214 break; 3215 3216 case NVME_ID_NS_DPS_TYPE_3: 3217 if (piremap) { 3218 return NVME_INVALID_PROT_INFO | NVME_DNR; 3219 } 3220 3221 break; 3222 } 3223 } 3224 3225 status = nvme_check_zone_write(ns, zone, slba, nlb); 3226 if (status) { 3227 goto invalid; 3228 } 3229 3230 status = nvme_zrm_auto(n, ns, zone); 3231 if (status) { 3232 goto invalid; 3233 } 3234 3235 zone->w_ptr += nlb; 3236 } 3237 3238 data_offset = nvme_l2b(ns, slba); 3239 3240 if (NVME_ID_NS_DPS_TYPE(ns->id_ns.dps)) { 3241 return nvme_dif_rw(n, req); 3242 } 3243 3244 if (!wrz) { 3245 status = nvme_map_data(n, nlb, req); 3246 if (status) { 3247 goto invalid; 3248 } 3249 3250 block_acct_start(blk_get_stats(blk), &req->acct, data_size, 3251 BLOCK_ACCT_WRITE); 3252 nvme_blk_write(blk, data_offset, nvme_rw_cb, req); 3253 } else { 3254 req->aiocb = blk_aio_pwrite_zeroes(blk, data_offset, data_size, 3255 BDRV_REQ_MAY_UNMAP, nvme_rw_cb, 3256 req); 3257 } 3258 3259 return NVME_NO_COMPLETE; 3260 3261 invalid: 3262 block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE); 3263 return status | NVME_DNR; 3264 } 3265 3266 static inline uint16_t nvme_write(NvmeCtrl *n, NvmeRequest *req) 3267 { 3268 return nvme_do_write(n, req, false, false); 3269 } 3270 3271 static inline uint16_t nvme_write_zeroes(NvmeCtrl *n, NvmeRequest *req) 3272 { 3273 return nvme_do_write(n, req, false, true); 3274 } 3275 3276 static inline uint16_t nvme_zone_append(NvmeCtrl *n, NvmeRequest *req) 3277 { 3278 return nvme_do_write(n, req, true, false); 3279 } 3280 3281 static uint16_t nvme_get_mgmt_zone_slba_idx(NvmeNamespace *ns, NvmeCmd *c, 3282 uint64_t *slba, uint32_t *zone_idx) 3283 { 3284 uint32_t dw10 = le32_to_cpu(c->cdw10); 3285 uint32_t dw11 = le32_to_cpu(c->cdw11); 3286 3287 if (!ns->params.zoned) { 3288 trace_pci_nvme_err_invalid_opc(c->opcode); 3289 return NVME_INVALID_OPCODE | NVME_DNR; 3290 } 3291 3292 *slba = ((uint64_t)dw11) << 32 | dw10; 3293 if (unlikely(*slba >= ns->id_ns.nsze)) { 3294 trace_pci_nvme_err_invalid_lba_range(*slba, 0, ns->id_ns.nsze); 3295 *slba = 0; 3296 return NVME_LBA_RANGE | NVME_DNR; 3297 } 3298 3299 *zone_idx = nvme_zone_idx(ns, *slba); 3300 assert(*zone_idx < ns->num_zones); 3301 3302 return NVME_SUCCESS; 3303 } 3304 3305 typedef uint16_t (*op_handler_t)(NvmeNamespace *, NvmeZone *, NvmeZoneState, 3306 NvmeRequest *); 3307 3308 enum NvmeZoneProcessingMask { 3309 NVME_PROC_CURRENT_ZONE = 0, 3310 NVME_PROC_OPENED_ZONES = 1 << 0, 3311 NVME_PROC_CLOSED_ZONES = 1 << 1, 3312 NVME_PROC_READ_ONLY_ZONES = 1 << 2, 3313 NVME_PROC_FULL_ZONES = 1 << 3, 3314 }; 3315 3316 static uint16_t nvme_open_zone(NvmeNamespace *ns, NvmeZone *zone, 3317 NvmeZoneState state, NvmeRequest *req) 3318 { 3319 return nvme_zrm_open(nvme_ctrl(req), ns, zone); 3320 } 3321 3322 static uint16_t nvme_close_zone(NvmeNamespace *ns, NvmeZone *zone, 3323 NvmeZoneState state, NvmeRequest *req) 3324 { 3325 return nvme_zrm_close(ns, zone); 3326 } 3327 3328 static uint16_t nvme_finish_zone(NvmeNamespace *ns, NvmeZone *zone, 3329 NvmeZoneState state, NvmeRequest *req) 3330 { 3331 return nvme_zrm_finish(ns, zone); 3332 } 3333 3334 static uint16_t nvme_offline_zone(NvmeNamespace *ns, NvmeZone *zone, 3335 NvmeZoneState state, NvmeRequest *req) 3336 { 3337 switch (state) { 3338 case NVME_ZONE_STATE_READ_ONLY: 3339 nvme_assign_zone_state(ns, zone, NVME_ZONE_STATE_OFFLINE); 3340 /* fall through */ 3341 case NVME_ZONE_STATE_OFFLINE: 3342 return NVME_SUCCESS; 3343 default: 3344 return NVME_ZONE_INVAL_TRANSITION; 3345 } 3346 } 3347 3348 static uint16_t nvme_set_zd_ext(NvmeNamespace *ns, NvmeZone *zone) 3349 { 3350 uint16_t status; 3351 uint8_t state = nvme_get_zone_state(zone); 3352 3353 if (state == NVME_ZONE_STATE_EMPTY) { 3354 status = nvme_aor_check(ns, 1, 0); 3355 if (status) { 3356 return status; 3357 } 3358 nvme_aor_inc_active(ns); 3359 zone->d.za |= NVME_ZA_ZD_EXT_VALID; 3360 nvme_assign_zone_state(ns, zone, NVME_ZONE_STATE_CLOSED); 3361 return NVME_SUCCESS; 3362 } 3363 3364 return NVME_ZONE_INVAL_TRANSITION; 3365 } 3366 3367 static uint16_t nvme_bulk_proc_zone(NvmeNamespace *ns, NvmeZone *zone, 3368 enum NvmeZoneProcessingMask proc_mask, 3369 op_handler_t op_hndlr, NvmeRequest *req) 3370 { 3371 uint16_t status = NVME_SUCCESS; 3372 NvmeZoneState zs = nvme_get_zone_state(zone); 3373 bool proc_zone; 3374 3375 switch (zs) { 3376 case NVME_ZONE_STATE_IMPLICITLY_OPEN: 3377 case NVME_ZONE_STATE_EXPLICITLY_OPEN: 3378 proc_zone = proc_mask & NVME_PROC_OPENED_ZONES; 3379 break; 3380 case NVME_ZONE_STATE_CLOSED: 3381 proc_zone = proc_mask & NVME_PROC_CLOSED_ZONES; 3382 break; 3383 case NVME_ZONE_STATE_READ_ONLY: 3384 proc_zone = proc_mask & NVME_PROC_READ_ONLY_ZONES; 3385 break; 3386 case NVME_ZONE_STATE_FULL: 3387 proc_zone = proc_mask & NVME_PROC_FULL_ZONES; 3388 break; 3389 default: 3390 proc_zone = false; 3391 } 3392 3393 if (proc_zone) { 3394 status = op_hndlr(ns, zone, zs, req); 3395 } 3396 3397 return status; 3398 } 3399 3400 static uint16_t nvme_do_zone_op(NvmeNamespace *ns, NvmeZone *zone, 3401 enum NvmeZoneProcessingMask proc_mask, 3402 op_handler_t op_hndlr, NvmeRequest *req) 3403 { 3404 NvmeZone *next; 3405 uint16_t status = NVME_SUCCESS; 3406 int i; 3407 3408 if (!proc_mask) { 3409 status = op_hndlr(ns, zone, nvme_get_zone_state(zone), req); 3410 } else { 3411 if (proc_mask & NVME_PROC_CLOSED_ZONES) { 3412 QTAILQ_FOREACH_SAFE(zone, &ns->closed_zones, entry, next) { 3413 status = nvme_bulk_proc_zone(ns, zone, proc_mask, op_hndlr, 3414 req); 3415 if (status && status != NVME_NO_COMPLETE) { 3416 goto out; 3417 } 3418 } 3419 } 3420 if (proc_mask & NVME_PROC_OPENED_ZONES) { 3421 QTAILQ_FOREACH_SAFE(zone, &ns->imp_open_zones, entry, next) { 3422 status = nvme_bulk_proc_zone(ns, zone, proc_mask, op_hndlr, 3423 req); 3424 if (status && status != NVME_NO_COMPLETE) { 3425 goto out; 3426 } 3427 } 3428 3429 QTAILQ_FOREACH_SAFE(zone, &ns->exp_open_zones, entry, next) { 3430 status = nvme_bulk_proc_zone(ns, zone, proc_mask, op_hndlr, 3431 req); 3432 if (status && status != NVME_NO_COMPLETE) { 3433 goto out; 3434 } 3435 } 3436 } 3437 if (proc_mask & NVME_PROC_FULL_ZONES) { 3438 QTAILQ_FOREACH_SAFE(zone, &ns->full_zones, entry, next) { 3439 status = nvme_bulk_proc_zone(ns, zone, proc_mask, op_hndlr, 3440 req); 3441 if (status && status != NVME_NO_COMPLETE) { 3442 goto out; 3443 } 3444 } 3445 } 3446 3447 if (proc_mask & NVME_PROC_READ_ONLY_ZONES) { 3448 for (i = 0; i < ns->num_zones; i++, zone++) { 3449 status = nvme_bulk_proc_zone(ns, zone, proc_mask, op_hndlr, 3450 req); 3451 if (status && status != NVME_NO_COMPLETE) { 3452 goto out; 3453 } 3454 } 3455 } 3456 } 3457 3458 out: 3459 return status; 3460 } 3461 3462 typedef struct NvmeZoneResetAIOCB { 3463 BlockAIOCB common; 3464 BlockAIOCB *aiocb; 3465 NvmeRequest *req; 3466 QEMUBH *bh; 3467 int ret; 3468 3469 bool all; 3470 int idx; 3471 NvmeZone *zone; 3472 } NvmeZoneResetAIOCB; 3473 3474 static void nvme_zone_reset_cancel(BlockAIOCB *aiocb) 3475 { 3476 NvmeZoneResetAIOCB *iocb = container_of(aiocb, NvmeZoneResetAIOCB, common); 3477 NvmeRequest *req = iocb->req; 3478 NvmeNamespace *ns = req->ns; 3479 3480 iocb->idx = ns->num_zones; 3481 3482 iocb->ret = -ECANCELED; 3483 3484 if (iocb->aiocb) { 3485 blk_aio_cancel_async(iocb->aiocb); 3486 iocb->aiocb = NULL; 3487 } 3488 } 3489 3490 static const AIOCBInfo nvme_zone_reset_aiocb_info = { 3491 .aiocb_size = sizeof(NvmeZoneResetAIOCB), 3492 .cancel_async = nvme_zone_reset_cancel, 3493 }; 3494 3495 static void nvme_zone_reset_bh(void *opaque) 3496 { 3497 NvmeZoneResetAIOCB *iocb = opaque; 3498 3499 iocb->common.cb(iocb->common.opaque, iocb->ret); 3500 3501 qemu_bh_delete(iocb->bh); 3502 iocb->bh = NULL; 3503 qemu_aio_unref(iocb); 3504 } 3505 3506 static void nvme_zone_reset_cb(void *opaque, int ret); 3507 3508 static void nvme_zone_reset_epilogue_cb(void *opaque, int ret) 3509 { 3510 NvmeZoneResetAIOCB *iocb = opaque; 3511 NvmeRequest *req = iocb->req; 3512 NvmeNamespace *ns = req->ns; 3513 int64_t moff; 3514 int count; 3515 3516 if (ret < 0) { 3517 nvme_zone_reset_cb(iocb, ret); 3518 return; 3519 } 3520 3521 if (!ns->lbaf.ms) { 3522 nvme_zone_reset_cb(iocb, 0); 3523 return; 3524 } 3525 3526 moff = nvme_moff(ns, iocb->zone->d.zslba); 3527 count = nvme_m2b(ns, ns->zone_size); 3528 3529 iocb->aiocb = blk_aio_pwrite_zeroes(ns->blkconf.blk, moff, count, 3530 BDRV_REQ_MAY_UNMAP, 3531 nvme_zone_reset_cb, iocb); 3532 return; 3533 } 3534 3535 static void nvme_zone_reset_cb(void *opaque, int ret) 3536 { 3537 NvmeZoneResetAIOCB *iocb = opaque; 3538 NvmeRequest *req = iocb->req; 3539 NvmeNamespace *ns = req->ns; 3540 3541 if (ret < 0) { 3542 iocb->ret = ret; 3543 goto done; 3544 } 3545 3546 if (iocb->zone) { 3547 nvme_zrm_reset(ns, iocb->zone); 3548 3549 if (!iocb->all) { 3550 goto done; 3551 } 3552 } 3553 3554 while (iocb->idx < ns->num_zones) { 3555 NvmeZone *zone = &ns->zone_array[iocb->idx++]; 3556 3557 switch (nvme_get_zone_state(zone)) { 3558 case NVME_ZONE_STATE_EMPTY: 3559 if (!iocb->all) { 3560 goto done; 3561 } 3562 3563 continue; 3564 3565 case NVME_ZONE_STATE_EXPLICITLY_OPEN: 3566 case NVME_ZONE_STATE_IMPLICITLY_OPEN: 3567 case NVME_ZONE_STATE_CLOSED: 3568 case NVME_ZONE_STATE_FULL: 3569 iocb->zone = zone; 3570 break; 3571 3572 default: 3573 continue; 3574 } 3575 3576 trace_pci_nvme_zns_zone_reset(zone->d.zslba); 3577 3578 iocb->aiocb = blk_aio_pwrite_zeroes(ns->blkconf.blk, 3579 nvme_l2b(ns, zone->d.zslba), 3580 nvme_l2b(ns, ns->zone_size), 3581 BDRV_REQ_MAY_UNMAP, 3582 nvme_zone_reset_epilogue_cb, 3583 iocb); 3584 return; 3585 } 3586 3587 done: 3588 iocb->aiocb = NULL; 3589 if (iocb->bh) { 3590 qemu_bh_schedule(iocb->bh); 3591 } 3592 } 3593 3594 static uint16_t nvme_zone_mgmt_send(NvmeCtrl *n, NvmeRequest *req) 3595 { 3596 NvmeCmd *cmd = (NvmeCmd *)&req->cmd; 3597 NvmeNamespace *ns = req->ns; 3598 NvmeZone *zone; 3599 NvmeZoneResetAIOCB *iocb; 3600 uint8_t *zd_ext; 3601 uint32_t dw13 = le32_to_cpu(cmd->cdw13); 3602 uint64_t slba = 0; 3603 uint32_t zone_idx = 0; 3604 uint16_t status; 3605 uint8_t action; 3606 bool all; 3607 enum NvmeZoneProcessingMask proc_mask = NVME_PROC_CURRENT_ZONE; 3608 3609 action = dw13 & 0xff; 3610 all = !!(dw13 & 0x100); 3611 3612 req->status = NVME_SUCCESS; 3613 3614 if (!all) { 3615 status = nvme_get_mgmt_zone_slba_idx(ns, cmd, &slba, &zone_idx); 3616 if (status) { 3617 return status; 3618 } 3619 } 3620 3621 zone = &ns->zone_array[zone_idx]; 3622 if (slba != zone->d.zslba) { 3623 trace_pci_nvme_err_unaligned_zone_cmd(action, slba, zone->d.zslba); 3624 return NVME_INVALID_FIELD | NVME_DNR; 3625 } 3626 3627 switch (action) { 3628 3629 case NVME_ZONE_ACTION_OPEN: 3630 if (all) { 3631 proc_mask = NVME_PROC_CLOSED_ZONES; 3632 } 3633 trace_pci_nvme_open_zone(slba, zone_idx, all); 3634 status = nvme_do_zone_op(ns, zone, proc_mask, nvme_open_zone, req); 3635 break; 3636 3637 case NVME_ZONE_ACTION_CLOSE: 3638 if (all) { 3639 proc_mask = NVME_PROC_OPENED_ZONES; 3640 } 3641 trace_pci_nvme_close_zone(slba, zone_idx, all); 3642 status = nvme_do_zone_op(ns, zone, proc_mask, nvme_close_zone, req); 3643 break; 3644 3645 case NVME_ZONE_ACTION_FINISH: 3646 if (all) { 3647 proc_mask = NVME_PROC_OPENED_ZONES | NVME_PROC_CLOSED_ZONES; 3648 } 3649 trace_pci_nvme_finish_zone(slba, zone_idx, all); 3650 status = nvme_do_zone_op(ns, zone, proc_mask, nvme_finish_zone, req); 3651 break; 3652 3653 case NVME_ZONE_ACTION_RESET: 3654 trace_pci_nvme_reset_zone(slba, zone_idx, all); 3655 3656 iocb = blk_aio_get(&nvme_zone_reset_aiocb_info, ns->blkconf.blk, 3657 nvme_misc_cb, req); 3658 3659 iocb->req = req; 3660 iocb->bh = qemu_bh_new(nvme_zone_reset_bh, iocb); 3661 iocb->ret = 0; 3662 iocb->all = all; 3663 iocb->idx = zone_idx; 3664 iocb->zone = NULL; 3665 3666 req->aiocb = &iocb->common; 3667 nvme_zone_reset_cb(iocb, 0); 3668 3669 return NVME_NO_COMPLETE; 3670 3671 case NVME_ZONE_ACTION_OFFLINE: 3672 if (all) { 3673 proc_mask = NVME_PROC_READ_ONLY_ZONES; 3674 } 3675 trace_pci_nvme_offline_zone(slba, zone_idx, all); 3676 status = nvme_do_zone_op(ns, zone, proc_mask, nvme_offline_zone, req); 3677 break; 3678 3679 case NVME_ZONE_ACTION_SET_ZD_EXT: 3680 trace_pci_nvme_set_descriptor_extension(slba, zone_idx); 3681 if (all || !ns->params.zd_extension_size) { 3682 return NVME_INVALID_FIELD | NVME_DNR; 3683 } 3684 zd_ext = nvme_get_zd_extension(ns, zone_idx); 3685 status = nvme_h2c(n, zd_ext, ns->params.zd_extension_size, req); 3686 if (status) { 3687 trace_pci_nvme_err_zd_extension_map_error(zone_idx); 3688 return status; 3689 } 3690 3691 status = nvme_set_zd_ext(ns, zone); 3692 if (status == NVME_SUCCESS) { 3693 trace_pci_nvme_zd_extension_set(zone_idx); 3694 return status; 3695 } 3696 break; 3697 3698 default: 3699 trace_pci_nvme_err_invalid_mgmt_action(action); 3700 status = NVME_INVALID_FIELD; 3701 } 3702 3703 if (status == NVME_ZONE_INVAL_TRANSITION) { 3704 trace_pci_nvme_err_invalid_zone_state_transition(action, slba, 3705 zone->d.za); 3706 } 3707 if (status) { 3708 status |= NVME_DNR; 3709 } 3710 3711 return status; 3712 } 3713 3714 static bool nvme_zone_matches_filter(uint32_t zafs, NvmeZone *zl) 3715 { 3716 NvmeZoneState zs = nvme_get_zone_state(zl); 3717 3718 switch (zafs) { 3719 case NVME_ZONE_REPORT_ALL: 3720 return true; 3721 case NVME_ZONE_REPORT_EMPTY: 3722 return zs == NVME_ZONE_STATE_EMPTY; 3723 case NVME_ZONE_REPORT_IMPLICITLY_OPEN: 3724 return zs == NVME_ZONE_STATE_IMPLICITLY_OPEN; 3725 case NVME_ZONE_REPORT_EXPLICITLY_OPEN: 3726 return zs == NVME_ZONE_STATE_EXPLICITLY_OPEN; 3727 case NVME_ZONE_REPORT_CLOSED: 3728 return zs == NVME_ZONE_STATE_CLOSED; 3729 case NVME_ZONE_REPORT_FULL: 3730 return zs == NVME_ZONE_STATE_FULL; 3731 case NVME_ZONE_REPORT_READ_ONLY: 3732 return zs == NVME_ZONE_STATE_READ_ONLY; 3733 case NVME_ZONE_REPORT_OFFLINE: 3734 return zs == NVME_ZONE_STATE_OFFLINE; 3735 default: 3736 return false; 3737 } 3738 } 3739 3740 static uint16_t nvme_zone_mgmt_recv(NvmeCtrl *n, NvmeRequest *req) 3741 { 3742 NvmeCmd *cmd = (NvmeCmd *)&req->cmd; 3743 NvmeNamespace *ns = req->ns; 3744 /* cdw12 is zero-based number of dwords to return. Convert to bytes */ 3745 uint32_t data_size = (le32_to_cpu(cmd->cdw12) + 1) << 2; 3746 uint32_t dw13 = le32_to_cpu(cmd->cdw13); 3747 uint32_t zone_idx, zra, zrasf, partial; 3748 uint64_t max_zones, nr_zones = 0; 3749 uint16_t status; 3750 uint64_t slba; 3751 NvmeZoneDescr *z; 3752 NvmeZone *zone; 3753 NvmeZoneReportHeader *header; 3754 void *buf, *buf_p; 3755 size_t zone_entry_sz; 3756 int i; 3757 3758 req->status = NVME_SUCCESS; 3759 3760 status = nvme_get_mgmt_zone_slba_idx(ns, cmd, &slba, &zone_idx); 3761 if (status) { 3762 return status; 3763 } 3764 3765 zra = dw13 & 0xff; 3766 if (zra != NVME_ZONE_REPORT && zra != NVME_ZONE_REPORT_EXTENDED) { 3767 return NVME_INVALID_FIELD | NVME_DNR; 3768 } 3769 if (zra == NVME_ZONE_REPORT_EXTENDED && !ns->params.zd_extension_size) { 3770 return NVME_INVALID_FIELD | NVME_DNR; 3771 } 3772 3773 zrasf = (dw13 >> 8) & 0xff; 3774 if (zrasf > NVME_ZONE_REPORT_OFFLINE) { 3775 return NVME_INVALID_FIELD | NVME_DNR; 3776 } 3777 3778 if (data_size < sizeof(NvmeZoneReportHeader)) { 3779 return NVME_INVALID_FIELD | NVME_DNR; 3780 } 3781 3782 status = nvme_check_mdts(n, data_size); 3783 if (status) { 3784 return status; 3785 } 3786 3787 partial = (dw13 >> 16) & 0x01; 3788 3789 zone_entry_sz = sizeof(NvmeZoneDescr); 3790 if (zra == NVME_ZONE_REPORT_EXTENDED) { 3791 zone_entry_sz += ns->params.zd_extension_size; 3792 } 3793 3794 max_zones = (data_size - sizeof(NvmeZoneReportHeader)) / zone_entry_sz; 3795 buf = g_malloc0(data_size); 3796 3797 zone = &ns->zone_array[zone_idx]; 3798 for (i = zone_idx; i < ns->num_zones; i++) { 3799 if (partial && nr_zones >= max_zones) { 3800 break; 3801 } 3802 if (nvme_zone_matches_filter(zrasf, zone++)) { 3803 nr_zones++; 3804 } 3805 } 3806 header = (NvmeZoneReportHeader *)buf; 3807 header->nr_zones = cpu_to_le64(nr_zones); 3808 3809 buf_p = buf + sizeof(NvmeZoneReportHeader); 3810 for (; zone_idx < ns->num_zones && max_zones > 0; zone_idx++) { 3811 zone = &ns->zone_array[zone_idx]; 3812 if (nvme_zone_matches_filter(zrasf, zone)) { 3813 z = (NvmeZoneDescr *)buf_p; 3814 buf_p += sizeof(NvmeZoneDescr); 3815 3816 z->zt = zone->d.zt; 3817 z->zs = zone->d.zs; 3818 z->zcap = cpu_to_le64(zone->d.zcap); 3819 z->zslba = cpu_to_le64(zone->d.zslba); 3820 z->za = zone->d.za; 3821 3822 if (nvme_wp_is_valid(zone)) { 3823 z->wp = cpu_to_le64(zone->d.wp); 3824 } else { 3825 z->wp = cpu_to_le64(~0ULL); 3826 } 3827 3828 if (zra == NVME_ZONE_REPORT_EXTENDED) { 3829 if (zone->d.za & NVME_ZA_ZD_EXT_VALID) { 3830 memcpy(buf_p, nvme_get_zd_extension(ns, zone_idx), 3831 ns->params.zd_extension_size); 3832 } 3833 buf_p += ns->params.zd_extension_size; 3834 } 3835 3836 max_zones--; 3837 } 3838 } 3839 3840 status = nvme_c2h(n, (uint8_t *)buf, data_size, req); 3841 3842 g_free(buf); 3843 3844 return status; 3845 } 3846 3847 static uint16_t nvme_io_cmd(NvmeCtrl *n, NvmeRequest *req) 3848 { 3849 NvmeNamespace *ns; 3850 uint32_t nsid = le32_to_cpu(req->cmd.nsid); 3851 3852 trace_pci_nvme_io_cmd(nvme_cid(req), nsid, nvme_sqid(req), 3853 req->cmd.opcode, nvme_io_opc_str(req->cmd.opcode)); 3854 3855 if (!nvme_nsid_valid(n, nsid)) { 3856 return NVME_INVALID_NSID | NVME_DNR; 3857 } 3858 3859 /* 3860 * In the base NVM command set, Flush may apply to all namespaces 3861 * (indicated by NSID being set to FFFFFFFFh). But if that feature is used 3862 * along with TP 4056 (Namespace Types), it may be pretty screwed up. 3863 * 3864 * If NSID is indeed set to FFFFFFFFh, we simply cannot associate the 3865 * opcode with a specific command since we cannot determine a unique I/O 3866 * command set. Opcode 0h could have any other meaning than something 3867 * equivalent to flushing and say it DOES have completely different 3868 * semantics in some other command set - does an NSID of FFFFFFFFh then 3869 * mean "for all namespaces, apply whatever command set specific command 3870 * that uses the 0h opcode?" Or does it mean "for all namespaces, apply 3871 * whatever command that uses the 0h opcode if, and only if, it allows NSID 3872 * to be FFFFFFFFh"? 3873 * 3874 * Anyway (and luckily), for now, we do not care about this since the 3875 * device only supports namespace types that includes the NVM Flush command 3876 * (NVM and Zoned), so always do an NVM Flush. 3877 */ 3878 if (req->cmd.opcode == NVME_CMD_FLUSH) { 3879 return nvme_flush(n, req); 3880 } 3881 3882 ns = nvme_ns(n, nsid); 3883 if (unlikely(!ns)) { 3884 return NVME_INVALID_FIELD | NVME_DNR; 3885 } 3886 3887 if (!(ns->iocs[req->cmd.opcode] & NVME_CMD_EFF_CSUPP)) { 3888 trace_pci_nvme_err_invalid_opc(req->cmd.opcode); 3889 return NVME_INVALID_OPCODE | NVME_DNR; 3890 } 3891 3892 if (ns->status) { 3893 return ns->status; 3894 } 3895 3896 req->ns = ns; 3897 3898 switch (req->cmd.opcode) { 3899 case NVME_CMD_WRITE_ZEROES: 3900 return nvme_write_zeroes(n, req); 3901 case NVME_CMD_ZONE_APPEND: 3902 return nvme_zone_append(n, req); 3903 case NVME_CMD_WRITE: 3904 return nvme_write(n, req); 3905 case NVME_CMD_READ: 3906 return nvme_read(n, req); 3907 case NVME_CMD_COMPARE: 3908 return nvme_compare(n, req); 3909 case NVME_CMD_DSM: 3910 return nvme_dsm(n, req); 3911 case NVME_CMD_VERIFY: 3912 return nvme_verify(n, req); 3913 case NVME_CMD_COPY: 3914 return nvme_copy(n, req); 3915 case NVME_CMD_ZONE_MGMT_SEND: 3916 return nvme_zone_mgmt_send(n, req); 3917 case NVME_CMD_ZONE_MGMT_RECV: 3918 return nvme_zone_mgmt_recv(n, req); 3919 default: 3920 assert(false); 3921 } 3922 3923 return NVME_INVALID_OPCODE | NVME_DNR; 3924 } 3925 3926 static void nvme_free_sq(NvmeSQueue *sq, NvmeCtrl *n) 3927 { 3928 n->sq[sq->sqid] = NULL; 3929 timer_free(sq->timer); 3930 g_free(sq->io_req); 3931 if (sq->sqid) { 3932 g_free(sq); 3933 } 3934 } 3935 3936 static uint16_t nvme_del_sq(NvmeCtrl *n, NvmeRequest *req) 3937 { 3938 NvmeDeleteQ *c = (NvmeDeleteQ *)&req->cmd; 3939 NvmeRequest *r, *next; 3940 NvmeSQueue *sq; 3941 NvmeCQueue *cq; 3942 uint16_t qid = le16_to_cpu(c->qid); 3943 3944 if (unlikely(!qid || nvme_check_sqid(n, qid))) { 3945 trace_pci_nvme_err_invalid_del_sq(qid); 3946 return NVME_INVALID_QID | NVME_DNR; 3947 } 3948 3949 trace_pci_nvme_del_sq(qid); 3950 3951 sq = n->sq[qid]; 3952 while (!QTAILQ_EMPTY(&sq->out_req_list)) { 3953 r = QTAILQ_FIRST(&sq->out_req_list); 3954 assert(r->aiocb); 3955 blk_aio_cancel(r->aiocb); 3956 } 3957 3958 assert(QTAILQ_EMPTY(&sq->out_req_list)); 3959 3960 if (!nvme_check_cqid(n, sq->cqid)) { 3961 cq = n->cq[sq->cqid]; 3962 QTAILQ_REMOVE(&cq->sq_list, sq, entry); 3963 3964 nvme_post_cqes(cq); 3965 QTAILQ_FOREACH_SAFE(r, &cq->req_list, entry, next) { 3966 if (r->sq == sq) { 3967 QTAILQ_REMOVE(&cq->req_list, r, entry); 3968 QTAILQ_INSERT_TAIL(&sq->req_list, r, entry); 3969 } 3970 } 3971 } 3972 3973 nvme_free_sq(sq, n); 3974 return NVME_SUCCESS; 3975 } 3976 3977 static void nvme_init_sq(NvmeSQueue *sq, NvmeCtrl *n, uint64_t dma_addr, 3978 uint16_t sqid, uint16_t cqid, uint16_t size) 3979 { 3980 int i; 3981 NvmeCQueue *cq; 3982 3983 sq->ctrl = n; 3984 sq->dma_addr = dma_addr; 3985 sq->sqid = sqid; 3986 sq->size = size; 3987 sq->cqid = cqid; 3988 sq->head = sq->tail = 0; 3989 sq->io_req = g_new0(NvmeRequest, sq->size); 3990 3991 QTAILQ_INIT(&sq->req_list); 3992 QTAILQ_INIT(&sq->out_req_list); 3993 for (i = 0; i < sq->size; i++) { 3994 sq->io_req[i].sq = sq; 3995 QTAILQ_INSERT_TAIL(&(sq->req_list), &sq->io_req[i], entry); 3996 } 3997 sq->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, nvme_process_sq, sq); 3998 3999 assert(n->cq[cqid]); 4000 cq = n->cq[cqid]; 4001 QTAILQ_INSERT_TAIL(&(cq->sq_list), sq, entry); 4002 n->sq[sqid] = sq; 4003 } 4004 4005 static uint16_t nvme_create_sq(NvmeCtrl *n, NvmeRequest *req) 4006 { 4007 NvmeSQueue *sq; 4008 NvmeCreateSq *c = (NvmeCreateSq *)&req->cmd; 4009 4010 uint16_t cqid = le16_to_cpu(c->cqid); 4011 uint16_t sqid = le16_to_cpu(c->sqid); 4012 uint16_t qsize = le16_to_cpu(c->qsize); 4013 uint16_t qflags = le16_to_cpu(c->sq_flags); 4014 uint64_t prp1 = le64_to_cpu(c->prp1); 4015 4016 trace_pci_nvme_create_sq(prp1, sqid, cqid, qsize, qflags); 4017 4018 if (unlikely(!cqid || nvme_check_cqid(n, cqid))) { 4019 trace_pci_nvme_err_invalid_create_sq_cqid(cqid); 4020 return NVME_INVALID_CQID | NVME_DNR; 4021 } 4022 if (unlikely(!sqid || sqid > n->params.max_ioqpairs || 4023 n->sq[sqid] != NULL)) { 4024 trace_pci_nvme_err_invalid_create_sq_sqid(sqid); 4025 return NVME_INVALID_QID | NVME_DNR; 4026 } 4027 if (unlikely(!qsize || qsize > NVME_CAP_MQES(ldq_le_p(&n->bar.cap)))) { 4028 trace_pci_nvme_err_invalid_create_sq_size(qsize); 4029 return NVME_MAX_QSIZE_EXCEEDED | NVME_DNR; 4030 } 4031 if (unlikely(prp1 & (n->page_size - 1))) { 4032 trace_pci_nvme_err_invalid_create_sq_addr(prp1); 4033 return NVME_INVALID_PRP_OFFSET | NVME_DNR; 4034 } 4035 if (unlikely(!(NVME_SQ_FLAGS_PC(qflags)))) { 4036 trace_pci_nvme_err_invalid_create_sq_qflags(NVME_SQ_FLAGS_PC(qflags)); 4037 return NVME_INVALID_FIELD | NVME_DNR; 4038 } 4039 sq = g_malloc0(sizeof(*sq)); 4040 nvme_init_sq(sq, n, prp1, sqid, cqid, qsize + 1); 4041 return NVME_SUCCESS; 4042 } 4043 4044 struct nvme_stats { 4045 uint64_t units_read; 4046 uint64_t units_written; 4047 uint64_t read_commands; 4048 uint64_t write_commands; 4049 }; 4050 4051 static void nvme_set_blk_stats(NvmeNamespace *ns, struct nvme_stats *stats) 4052 { 4053 BlockAcctStats *s = blk_get_stats(ns->blkconf.blk); 4054 4055 stats->units_read += s->nr_bytes[BLOCK_ACCT_READ] >> BDRV_SECTOR_BITS; 4056 stats->units_written += s->nr_bytes[BLOCK_ACCT_WRITE] >> BDRV_SECTOR_BITS; 4057 stats->read_commands += s->nr_ops[BLOCK_ACCT_READ]; 4058 stats->write_commands += s->nr_ops[BLOCK_ACCT_WRITE]; 4059 } 4060 4061 static uint16_t nvme_smart_info(NvmeCtrl *n, uint8_t rae, uint32_t buf_len, 4062 uint64_t off, NvmeRequest *req) 4063 { 4064 uint32_t nsid = le32_to_cpu(req->cmd.nsid); 4065 struct nvme_stats stats = { 0 }; 4066 NvmeSmartLog smart = { 0 }; 4067 uint32_t trans_len; 4068 NvmeNamespace *ns; 4069 time_t current_ms; 4070 4071 if (off >= sizeof(smart)) { 4072 return NVME_INVALID_FIELD | NVME_DNR; 4073 } 4074 4075 if (nsid != 0xffffffff) { 4076 ns = nvme_ns(n, nsid); 4077 if (!ns) { 4078 return NVME_INVALID_NSID | NVME_DNR; 4079 } 4080 nvme_set_blk_stats(ns, &stats); 4081 } else { 4082 int i; 4083 4084 for (i = 1; i <= NVME_MAX_NAMESPACES; i++) { 4085 ns = nvme_ns(n, i); 4086 if (!ns) { 4087 continue; 4088 } 4089 nvme_set_blk_stats(ns, &stats); 4090 } 4091 } 4092 4093 trans_len = MIN(sizeof(smart) - off, buf_len); 4094 smart.critical_warning = n->smart_critical_warning; 4095 4096 smart.data_units_read[0] = cpu_to_le64(DIV_ROUND_UP(stats.units_read, 4097 1000)); 4098 smart.data_units_written[0] = cpu_to_le64(DIV_ROUND_UP(stats.units_written, 4099 1000)); 4100 smart.host_read_commands[0] = cpu_to_le64(stats.read_commands); 4101 smart.host_write_commands[0] = cpu_to_le64(stats.write_commands); 4102 4103 smart.temperature = cpu_to_le16(n->temperature); 4104 4105 if ((n->temperature >= n->features.temp_thresh_hi) || 4106 (n->temperature <= n->features.temp_thresh_low)) { 4107 smart.critical_warning |= NVME_SMART_TEMPERATURE; 4108 } 4109 4110 current_ms = qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL); 4111 smart.power_on_hours[0] = 4112 cpu_to_le64((((current_ms - n->starttime_ms) / 1000) / 60) / 60); 4113 4114 if (!rae) { 4115 nvme_clear_events(n, NVME_AER_TYPE_SMART); 4116 } 4117 4118 return nvme_c2h(n, (uint8_t *) &smart + off, trans_len, req); 4119 } 4120 4121 static uint16_t nvme_fw_log_info(NvmeCtrl *n, uint32_t buf_len, uint64_t off, 4122 NvmeRequest *req) 4123 { 4124 uint32_t trans_len; 4125 NvmeFwSlotInfoLog fw_log = { 4126 .afi = 0x1, 4127 }; 4128 4129 if (off >= sizeof(fw_log)) { 4130 return NVME_INVALID_FIELD | NVME_DNR; 4131 } 4132 4133 strpadcpy((char *)&fw_log.frs1, sizeof(fw_log.frs1), "1.0", ' '); 4134 trans_len = MIN(sizeof(fw_log) - off, buf_len); 4135 4136 return nvme_c2h(n, (uint8_t *) &fw_log + off, trans_len, req); 4137 } 4138 4139 static uint16_t nvme_error_info(NvmeCtrl *n, uint8_t rae, uint32_t buf_len, 4140 uint64_t off, NvmeRequest *req) 4141 { 4142 uint32_t trans_len; 4143 NvmeErrorLog errlog; 4144 4145 if (off >= sizeof(errlog)) { 4146 return NVME_INVALID_FIELD | NVME_DNR; 4147 } 4148 4149 if (!rae) { 4150 nvme_clear_events(n, NVME_AER_TYPE_ERROR); 4151 } 4152 4153 memset(&errlog, 0x0, sizeof(errlog)); 4154 trans_len = MIN(sizeof(errlog) - off, buf_len); 4155 4156 return nvme_c2h(n, (uint8_t *)&errlog, trans_len, req); 4157 } 4158 4159 static uint16_t nvme_changed_nslist(NvmeCtrl *n, uint8_t rae, uint32_t buf_len, 4160 uint64_t off, NvmeRequest *req) 4161 { 4162 uint32_t nslist[1024]; 4163 uint32_t trans_len; 4164 int i = 0; 4165 uint32_t nsid; 4166 4167 memset(nslist, 0x0, sizeof(nslist)); 4168 trans_len = MIN(sizeof(nslist) - off, buf_len); 4169 4170 while ((nsid = find_first_bit(n->changed_nsids, NVME_CHANGED_NSID_SIZE)) != 4171 NVME_CHANGED_NSID_SIZE) { 4172 /* 4173 * If more than 1024 namespaces, the first entry in the log page should 4174 * be set to FFFFFFFFh and the others to 0 as spec. 4175 */ 4176 if (i == ARRAY_SIZE(nslist)) { 4177 memset(nslist, 0x0, sizeof(nslist)); 4178 nslist[0] = 0xffffffff; 4179 break; 4180 } 4181 4182 nslist[i++] = nsid; 4183 clear_bit(nsid, n->changed_nsids); 4184 } 4185 4186 /* 4187 * Remove all the remaining list entries in case returns directly due to 4188 * more than 1024 namespaces. 4189 */ 4190 if (nslist[0] == 0xffffffff) { 4191 bitmap_zero(n->changed_nsids, NVME_CHANGED_NSID_SIZE); 4192 } 4193 4194 if (!rae) { 4195 nvme_clear_events(n, NVME_AER_TYPE_NOTICE); 4196 } 4197 4198 return nvme_c2h(n, ((uint8_t *)nslist) + off, trans_len, req); 4199 } 4200 4201 static uint16_t nvme_cmd_effects(NvmeCtrl *n, uint8_t csi, uint32_t buf_len, 4202 uint64_t off, NvmeRequest *req) 4203 { 4204 NvmeEffectsLog log = {}; 4205 const uint32_t *src_iocs = NULL; 4206 uint32_t trans_len; 4207 4208 if (off >= sizeof(log)) { 4209 trace_pci_nvme_err_invalid_log_page_offset(off, sizeof(log)); 4210 return NVME_INVALID_FIELD | NVME_DNR; 4211 } 4212 4213 switch (NVME_CC_CSS(ldl_le_p(&n->bar.cc))) { 4214 case NVME_CC_CSS_NVM: 4215 src_iocs = nvme_cse_iocs_nvm; 4216 /* fall through */ 4217 case NVME_CC_CSS_ADMIN_ONLY: 4218 break; 4219 case NVME_CC_CSS_CSI: 4220 switch (csi) { 4221 case NVME_CSI_NVM: 4222 src_iocs = nvme_cse_iocs_nvm; 4223 break; 4224 case NVME_CSI_ZONED: 4225 src_iocs = nvme_cse_iocs_zoned; 4226 break; 4227 } 4228 } 4229 4230 memcpy(log.acs, nvme_cse_acs, sizeof(nvme_cse_acs)); 4231 4232 if (src_iocs) { 4233 memcpy(log.iocs, src_iocs, sizeof(log.iocs)); 4234 } 4235 4236 trans_len = MIN(sizeof(log) - off, buf_len); 4237 4238 return nvme_c2h(n, ((uint8_t *)&log) + off, trans_len, req); 4239 } 4240 4241 static uint16_t nvme_get_log(NvmeCtrl *n, NvmeRequest *req) 4242 { 4243 NvmeCmd *cmd = &req->cmd; 4244 4245 uint32_t dw10 = le32_to_cpu(cmd->cdw10); 4246 uint32_t dw11 = le32_to_cpu(cmd->cdw11); 4247 uint32_t dw12 = le32_to_cpu(cmd->cdw12); 4248 uint32_t dw13 = le32_to_cpu(cmd->cdw13); 4249 uint8_t lid = dw10 & 0xff; 4250 uint8_t lsp = (dw10 >> 8) & 0xf; 4251 uint8_t rae = (dw10 >> 15) & 0x1; 4252 uint8_t csi = le32_to_cpu(cmd->cdw14) >> 24; 4253 uint32_t numdl, numdu; 4254 uint64_t off, lpol, lpou; 4255 size_t len; 4256 uint16_t status; 4257 4258 numdl = (dw10 >> 16); 4259 numdu = (dw11 & 0xffff); 4260 lpol = dw12; 4261 lpou = dw13; 4262 4263 len = (((numdu << 16) | numdl) + 1) << 2; 4264 off = (lpou << 32ULL) | lpol; 4265 4266 if (off & 0x3) { 4267 return NVME_INVALID_FIELD | NVME_DNR; 4268 } 4269 4270 trace_pci_nvme_get_log(nvme_cid(req), lid, lsp, rae, len, off); 4271 4272 status = nvme_check_mdts(n, len); 4273 if (status) { 4274 return status; 4275 } 4276 4277 switch (lid) { 4278 case NVME_LOG_ERROR_INFO: 4279 return nvme_error_info(n, rae, len, off, req); 4280 case NVME_LOG_SMART_INFO: 4281 return nvme_smart_info(n, rae, len, off, req); 4282 case NVME_LOG_FW_SLOT_INFO: 4283 return nvme_fw_log_info(n, len, off, req); 4284 case NVME_LOG_CHANGED_NSLIST: 4285 return nvme_changed_nslist(n, rae, len, off, req); 4286 case NVME_LOG_CMD_EFFECTS: 4287 return nvme_cmd_effects(n, csi, len, off, req); 4288 default: 4289 trace_pci_nvme_err_invalid_log_page(nvme_cid(req), lid); 4290 return NVME_INVALID_FIELD | NVME_DNR; 4291 } 4292 } 4293 4294 static void nvme_free_cq(NvmeCQueue *cq, NvmeCtrl *n) 4295 { 4296 n->cq[cq->cqid] = NULL; 4297 timer_free(cq->timer); 4298 if (msix_enabled(&n->parent_obj)) { 4299 msix_vector_unuse(&n->parent_obj, cq->vector); 4300 } 4301 if (cq->cqid) { 4302 g_free(cq); 4303 } 4304 } 4305 4306 static uint16_t nvme_del_cq(NvmeCtrl *n, NvmeRequest *req) 4307 { 4308 NvmeDeleteQ *c = (NvmeDeleteQ *)&req->cmd; 4309 NvmeCQueue *cq; 4310 uint16_t qid = le16_to_cpu(c->qid); 4311 4312 if (unlikely(!qid || nvme_check_cqid(n, qid))) { 4313 trace_pci_nvme_err_invalid_del_cq_cqid(qid); 4314 return NVME_INVALID_CQID | NVME_DNR; 4315 } 4316 4317 cq = n->cq[qid]; 4318 if (unlikely(!QTAILQ_EMPTY(&cq->sq_list))) { 4319 trace_pci_nvme_err_invalid_del_cq_notempty(qid); 4320 return NVME_INVALID_QUEUE_DEL; 4321 } 4322 4323 if (cq->irq_enabled && cq->tail != cq->head) { 4324 n->cq_pending--; 4325 } 4326 4327 nvme_irq_deassert(n, cq); 4328 trace_pci_nvme_del_cq(qid); 4329 nvme_free_cq(cq, n); 4330 return NVME_SUCCESS; 4331 } 4332 4333 static void nvme_init_cq(NvmeCQueue *cq, NvmeCtrl *n, uint64_t dma_addr, 4334 uint16_t cqid, uint16_t vector, uint16_t size, 4335 uint16_t irq_enabled) 4336 { 4337 int ret; 4338 4339 if (msix_enabled(&n->parent_obj)) { 4340 ret = msix_vector_use(&n->parent_obj, vector); 4341 assert(ret == 0); 4342 } 4343 cq->ctrl = n; 4344 cq->cqid = cqid; 4345 cq->size = size; 4346 cq->dma_addr = dma_addr; 4347 cq->phase = 1; 4348 cq->irq_enabled = irq_enabled; 4349 cq->vector = vector; 4350 cq->head = cq->tail = 0; 4351 QTAILQ_INIT(&cq->req_list); 4352 QTAILQ_INIT(&cq->sq_list); 4353 n->cq[cqid] = cq; 4354 cq->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, nvme_post_cqes, cq); 4355 } 4356 4357 static uint16_t nvme_create_cq(NvmeCtrl *n, NvmeRequest *req) 4358 { 4359 NvmeCQueue *cq; 4360 NvmeCreateCq *c = (NvmeCreateCq *)&req->cmd; 4361 uint16_t cqid = le16_to_cpu(c->cqid); 4362 uint16_t vector = le16_to_cpu(c->irq_vector); 4363 uint16_t qsize = le16_to_cpu(c->qsize); 4364 uint16_t qflags = le16_to_cpu(c->cq_flags); 4365 uint64_t prp1 = le64_to_cpu(c->prp1); 4366 4367 trace_pci_nvme_create_cq(prp1, cqid, vector, qsize, qflags, 4368 NVME_CQ_FLAGS_IEN(qflags) != 0); 4369 4370 if (unlikely(!cqid || cqid > n->params.max_ioqpairs || 4371 n->cq[cqid] != NULL)) { 4372 trace_pci_nvme_err_invalid_create_cq_cqid(cqid); 4373 return NVME_INVALID_QID | NVME_DNR; 4374 } 4375 if (unlikely(!qsize || qsize > NVME_CAP_MQES(ldq_le_p(&n->bar.cap)))) { 4376 trace_pci_nvme_err_invalid_create_cq_size(qsize); 4377 return NVME_MAX_QSIZE_EXCEEDED | NVME_DNR; 4378 } 4379 if (unlikely(prp1 & (n->page_size - 1))) { 4380 trace_pci_nvme_err_invalid_create_cq_addr(prp1); 4381 return NVME_INVALID_PRP_OFFSET | NVME_DNR; 4382 } 4383 if (unlikely(!msix_enabled(&n->parent_obj) && vector)) { 4384 trace_pci_nvme_err_invalid_create_cq_vector(vector); 4385 return NVME_INVALID_IRQ_VECTOR | NVME_DNR; 4386 } 4387 if (unlikely(vector >= n->params.msix_qsize)) { 4388 trace_pci_nvme_err_invalid_create_cq_vector(vector); 4389 return NVME_INVALID_IRQ_VECTOR | NVME_DNR; 4390 } 4391 if (unlikely(!(NVME_CQ_FLAGS_PC(qflags)))) { 4392 trace_pci_nvme_err_invalid_create_cq_qflags(NVME_CQ_FLAGS_PC(qflags)); 4393 return NVME_INVALID_FIELD | NVME_DNR; 4394 } 4395 4396 cq = g_malloc0(sizeof(*cq)); 4397 nvme_init_cq(cq, n, prp1, cqid, vector, qsize + 1, 4398 NVME_CQ_FLAGS_IEN(qflags)); 4399 4400 /* 4401 * It is only required to set qs_created when creating a completion queue; 4402 * creating a submission queue without a matching completion queue will 4403 * fail. 4404 */ 4405 n->qs_created = true; 4406 return NVME_SUCCESS; 4407 } 4408 4409 static uint16_t nvme_rpt_empty_id_struct(NvmeCtrl *n, NvmeRequest *req) 4410 { 4411 uint8_t id[NVME_IDENTIFY_DATA_SIZE] = {}; 4412 4413 return nvme_c2h(n, id, sizeof(id), req); 4414 } 4415 4416 static uint16_t nvme_identify_ctrl(NvmeCtrl *n, NvmeRequest *req) 4417 { 4418 trace_pci_nvme_identify_ctrl(); 4419 4420 return nvme_c2h(n, (uint8_t *)&n->id_ctrl, sizeof(n->id_ctrl), req); 4421 } 4422 4423 static uint16_t nvme_identify_ctrl_csi(NvmeCtrl *n, NvmeRequest *req) 4424 { 4425 NvmeIdentify *c = (NvmeIdentify *)&req->cmd; 4426 uint8_t id[NVME_IDENTIFY_DATA_SIZE] = {}; 4427 NvmeIdCtrlNvm *id_nvm = (NvmeIdCtrlNvm *)&id; 4428 4429 trace_pci_nvme_identify_ctrl_csi(c->csi); 4430 4431 switch (c->csi) { 4432 case NVME_CSI_NVM: 4433 id_nvm->vsl = n->params.vsl; 4434 id_nvm->dmrsl = cpu_to_le32(n->dmrsl); 4435 break; 4436 4437 case NVME_CSI_ZONED: 4438 ((NvmeIdCtrlZoned *)&id)->zasl = n->params.zasl; 4439 break; 4440 4441 default: 4442 return NVME_INVALID_FIELD | NVME_DNR; 4443 } 4444 4445 return nvme_c2h(n, id, sizeof(id), req); 4446 } 4447 4448 static uint16_t nvme_identify_ns(NvmeCtrl *n, NvmeRequest *req, bool active) 4449 { 4450 NvmeNamespace *ns; 4451 NvmeIdentify *c = (NvmeIdentify *)&req->cmd; 4452 uint32_t nsid = le32_to_cpu(c->nsid); 4453 4454 trace_pci_nvme_identify_ns(nsid); 4455 4456 if (!nvme_nsid_valid(n, nsid) || nsid == NVME_NSID_BROADCAST) { 4457 return NVME_INVALID_NSID | NVME_DNR; 4458 } 4459 4460 ns = nvme_ns(n, nsid); 4461 if (unlikely(!ns)) { 4462 if (!active) { 4463 ns = nvme_subsys_ns(n->subsys, nsid); 4464 if (!ns) { 4465 return nvme_rpt_empty_id_struct(n, req); 4466 } 4467 } else { 4468 return nvme_rpt_empty_id_struct(n, req); 4469 } 4470 } 4471 4472 if (active || ns->csi == NVME_CSI_NVM) { 4473 return nvme_c2h(n, (uint8_t *)&ns->id_ns, sizeof(NvmeIdNs), req); 4474 } 4475 4476 return NVME_INVALID_CMD_SET | NVME_DNR; 4477 } 4478 4479 static uint16_t nvme_identify_ctrl_list(NvmeCtrl *n, NvmeRequest *req, 4480 bool attached) 4481 { 4482 NvmeIdentify *c = (NvmeIdentify *)&req->cmd; 4483 uint32_t nsid = le32_to_cpu(c->nsid); 4484 uint16_t min_id = le16_to_cpu(c->ctrlid); 4485 uint16_t list[NVME_CONTROLLER_LIST_SIZE] = {}; 4486 uint16_t *ids = &list[1]; 4487 NvmeNamespace *ns; 4488 NvmeCtrl *ctrl; 4489 int cntlid, nr_ids = 0; 4490 4491 trace_pci_nvme_identify_ctrl_list(c->cns, min_id); 4492 4493 if (!n->subsys) { 4494 return NVME_INVALID_FIELD | NVME_DNR; 4495 } 4496 4497 if (attached) { 4498 if (nsid == NVME_NSID_BROADCAST) { 4499 return NVME_INVALID_FIELD | NVME_DNR; 4500 } 4501 4502 ns = nvme_subsys_ns(n->subsys, nsid); 4503 if (!ns) { 4504 return NVME_INVALID_FIELD | NVME_DNR; 4505 } 4506 } 4507 4508 for (cntlid = min_id; cntlid < ARRAY_SIZE(n->subsys->ctrls); cntlid++) { 4509 ctrl = nvme_subsys_ctrl(n->subsys, cntlid); 4510 if (!ctrl) { 4511 continue; 4512 } 4513 4514 if (attached && !nvme_ns(ctrl, nsid)) { 4515 continue; 4516 } 4517 4518 ids[nr_ids++] = cntlid; 4519 } 4520 4521 list[0] = nr_ids; 4522 4523 return nvme_c2h(n, (uint8_t *)list, sizeof(list), req); 4524 } 4525 4526 static uint16_t nvme_identify_ns_csi(NvmeCtrl *n, NvmeRequest *req, 4527 bool active) 4528 { 4529 NvmeNamespace *ns; 4530 NvmeIdentify *c = (NvmeIdentify *)&req->cmd; 4531 uint32_t nsid = le32_to_cpu(c->nsid); 4532 4533 trace_pci_nvme_identify_ns_csi(nsid, c->csi); 4534 4535 if (!nvme_nsid_valid(n, nsid) || nsid == NVME_NSID_BROADCAST) { 4536 return NVME_INVALID_NSID | NVME_DNR; 4537 } 4538 4539 ns = nvme_ns(n, nsid); 4540 if (unlikely(!ns)) { 4541 if (!active) { 4542 ns = nvme_subsys_ns(n->subsys, nsid); 4543 if (!ns) { 4544 return nvme_rpt_empty_id_struct(n, req); 4545 } 4546 } else { 4547 return nvme_rpt_empty_id_struct(n, req); 4548 } 4549 } 4550 4551 if (c->csi == NVME_CSI_NVM) { 4552 return nvme_rpt_empty_id_struct(n, req); 4553 } else if (c->csi == NVME_CSI_ZONED && ns->csi == NVME_CSI_ZONED) { 4554 return nvme_c2h(n, (uint8_t *)ns->id_ns_zoned, sizeof(NvmeIdNsZoned), 4555 req); 4556 } 4557 4558 return NVME_INVALID_FIELD | NVME_DNR; 4559 } 4560 4561 static uint16_t nvme_identify_nslist(NvmeCtrl *n, NvmeRequest *req, 4562 bool active) 4563 { 4564 NvmeNamespace *ns; 4565 NvmeIdentify *c = (NvmeIdentify *)&req->cmd; 4566 uint32_t min_nsid = le32_to_cpu(c->nsid); 4567 uint8_t list[NVME_IDENTIFY_DATA_SIZE] = {}; 4568 static const int data_len = sizeof(list); 4569 uint32_t *list_ptr = (uint32_t *)list; 4570 int i, j = 0; 4571 4572 trace_pci_nvme_identify_nslist(min_nsid); 4573 4574 /* 4575 * Both FFFFFFFFh (NVME_NSID_BROADCAST) and FFFFFFFFEh are invalid values 4576 * since the Active Namespace ID List should return namespaces with ids 4577 * *higher* than the NSID specified in the command. This is also specified 4578 * in the spec (NVM Express v1.3d, Section 5.15.4). 4579 */ 4580 if (min_nsid >= NVME_NSID_BROADCAST - 1) { 4581 return NVME_INVALID_NSID | NVME_DNR; 4582 } 4583 4584 for (i = 1; i <= NVME_MAX_NAMESPACES; i++) { 4585 ns = nvme_ns(n, i); 4586 if (!ns) { 4587 if (!active) { 4588 ns = nvme_subsys_ns(n->subsys, i); 4589 if (!ns) { 4590 continue; 4591 } 4592 } else { 4593 continue; 4594 } 4595 } 4596 if (ns->params.nsid <= min_nsid) { 4597 continue; 4598 } 4599 list_ptr[j++] = cpu_to_le32(ns->params.nsid); 4600 if (j == data_len / sizeof(uint32_t)) { 4601 break; 4602 } 4603 } 4604 4605 return nvme_c2h(n, list, data_len, req); 4606 } 4607 4608 static uint16_t nvme_identify_nslist_csi(NvmeCtrl *n, NvmeRequest *req, 4609 bool active) 4610 { 4611 NvmeNamespace *ns; 4612 NvmeIdentify *c = (NvmeIdentify *)&req->cmd; 4613 uint32_t min_nsid = le32_to_cpu(c->nsid); 4614 uint8_t list[NVME_IDENTIFY_DATA_SIZE] = {}; 4615 static const int data_len = sizeof(list); 4616 uint32_t *list_ptr = (uint32_t *)list; 4617 int i, j = 0; 4618 4619 trace_pci_nvme_identify_nslist_csi(min_nsid, c->csi); 4620 4621 /* 4622 * Same as in nvme_identify_nslist(), FFFFFFFFh/FFFFFFFFEh are invalid. 4623 */ 4624 if (min_nsid >= NVME_NSID_BROADCAST - 1) { 4625 return NVME_INVALID_NSID | NVME_DNR; 4626 } 4627 4628 if (c->csi != NVME_CSI_NVM && c->csi != NVME_CSI_ZONED) { 4629 return NVME_INVALID_FIELD | NVME_DNR; 4630 } 4631 4632 for (i = 1; i <= NVME_MAX_NAMESPACES; i++) { 4633 ns = nvme_ns(n, i); 4634 if (!ns) { 4635 if (!active) { 4636 ns = nvme_subsys_ns(n->subsys, i); 4637 if (!ns) { 4638 continue; 4639 } 4640 } else { 4641 continue; 4642 } 4643 } 4644 if (ns->params.nsid <= min_nsid || c->csi != ns->csi) { 4645 continue; 4646 } 4647 list_ptr[j++] = cpu_to_le32(ns->params.nsid); 4648 if (j == data_len / sizeof(uint32_t)) { 4649 break; 4650 } 4651 } 4652 4653 return nvme_c2h(n, list, data_len, req); 4654 } 4655 4656 static uint16_t nvme_identify_ns_descr_list(NvmeCtrl *n, NvmeRequest *req) 4657 { 4658 NvmeNamespace *ns; 4659 NvmeIdentify *c = (NvmeIdentify *)&req->cmd; 4660 uint32_t nsid = le32_to_cpu(c->nsid); 4661 uint8_t list[NVME_IDENTIFY_DATA_SIZE] = {}; 4662 uint8_t *pos = list; 4663 struct { 4664 NvmeIdNsDescr hdr; 4665 uint8_t v[NVME_NIDL_UUID]; 4666 } QEMU_PACKED uuid = {}; 4667 struct { 4668 NvmeIdNsDescr hdr; 4669 uint64_t v; 4670 } QEMU_PACKED eui64 = {}; 4671 struct { 4672 NvmeIdNsDescr hdr; 4673 uint8_t v; 4674 } QEMU_PACKED csi = {}; 4675 4676 trace_pci_nvme_identify_ns_descr_list(nsid); 4677 4678 if (!nvme_nsid_valid(n, nsid) || nsid == NVME_NSID_BROADCAST) { 4679 return NVME_INVALID_NSID | NVME_DNR; 4680 } 4681 4682 ns = nvme_ns(n, nsid); 4683 if (unlikely(!ns)) { 4684 return NVME_INVALID_FIELD | NVME_DNR; 4685 } 4686 4687 /* 4688 * If the EUI-64 field is 0 and the NGUID field is 0, the namespace must 4689 * provide a valid Namespace UUID in the Namespace Identification Descriptor 4690 * data structure. QEMU does not yet support setting NGUID. 4691 */ 4692 uuid.hdr.nidt = NVME_NIDT_UUID; 4693 uuid.hdr.nidl = NVME_NIDL_UUID; 4694 memcpy(uuid.v, ns->params.uuid.data, NVME_NIDL_UUID); 4695 memcpy(pos, &uuid, sizeof(uuid)); 4696 pos += sizeof(uuid); 4697 4698 if (ns->params.eui64) { 4699 eui64.hdr.nidt = NVME_NIDT_EUI64; 4700 eui64.hdr.nidl = NVME_NIDL_EUI64; 4701 eui64.v = cpu_to_be64(ns->params.eui64); 4702 memcpy(pos, &eui64, sizeof(eui64)); 4703 pos += sizeof(eui64); 4704 } 4705 4706 csi.hdr.nidt = NVME_NIDT_CSI; 4707 csi.hdr.nidl = NVME_NIDL_CSI; 4708 csi.v = ns->csi; 4709 memcpy(pos, &csi, sizeof(csi)); 4710 pos += sizeof(csi); 4711 4712 return nvme_c2h(n, list, sizeof(list), req); 4713 } 4714 4715 static uint16_t nvme_identify_cmd_set(NvmeCtrl *n, NvmeRequest *req) 4716 { 4717 uint8_t list[NVME_IDENTIFY_DATA_SIZE] = {}; 4718 static const int data_len = sizeof(list); 4719 4720 trace_pci_nvme_identify_cmd_set(); 4721 4722 NVME_SET_CSI(*list, NVME_CSI_NVM); 4723 NVME_SET_CSI(*list, NVME_CSI_ZONED); 4724 4725 return nvme_c2h(n, list, data_len, req); 4726 } 4727 4728 static uint16_t nvme_identify(NvmeCtrl *n, NvmeRequest *req) 4729 { 4730 NvmeIdentify *c = (NvmeIdentify *)&req->cmd; 4731 4732 trace_pci_nvme_identify(nvme_cid(req), c->cns, le16_to_cpu(c->ctrlid), 4733 c->csi); 4734 4735 switch (c->cns) { 4736 case NVME_ID_CNS_NS: 4737 return nvme_identify_ns(n, req, true); 4738 case NVME_ID_CNS_NS_PRESENT: 4739 return nvme_identify_ns(n, req, false); 4740 case NVME_ID_CNS_NS_ATTACHED_CTRL_LIST: 4741 return nvme_identify_ctrl_list(n, req, true); 4742 case NVME_ID_CNS_CTRL_LIST: 4743 return nvme_identify_ctrl_list(n, req, false); 4744 case NVME_ID_CNS_CS_NS: 4745 return nvme_identify_ns_csi(n, req, true); 4746 case NVME_ID_CNS_CS_NS_PRESENT: 4747 return nvme_identify_ns_csi(n, req, false); 4748 case NVME_ID_CNS_CTRL: 4749 return nvme_identify_ctrl(n, req); 4750 case NVME_ID_CNS_CS_CTRL: 4751 return nvme_identify_ctrl_csi(n, req); 4752 case NVME_ID_CNS_NS_ACTIVE_LIST: 4753 return nvme_identify_nslist(n, req, true); 4754 case NVME_ID_CNS_NS_PRESENT_LIST: 4755 return nvme_identify_nslist(n, req, false); 4756 case NVME_ID_CNS_CS_NS_ACTIVE_LIST: 4757 return nvme_identify_nslist_csi(n, req, true); 4758 case NVME_ID_CNS_CS_NS_PRESENT_LIST: 4759 return nvme_identify_nslist_csi(n, req, false); 4760 case NVME_ID_CNS_NS_DESCR_LIST: 4761 return nvme_identify_ns_descr_list(n, req); 4762 case NVME_ID_CNS_IO_COMMAND_SET: 4763 return nvme_identify_cmd_set(n, req); 4764 default: 4765 trace_pci_nvme_err_invalid_identify_cns(le32_to_cpu(c->cns)); 4766 return NVME_INVALID_FIELD | NVME_DNR; 4767 } 4768 } 4769 4770 static uint16_t nvme_abort(NvmeCtrl *n, NvmeRequest *req) 4771 { 4772 uint16_t sqid = le32_to_cpu(req->cmd.cdw10) & 0xffff; 4773 4774 req->cqe.result = 1; 4775 if (nvme_check_sqid(n, sqid)) { 4776 return NVME_INVALID_FIELD | NVME_DNR; 4777 } 4778 4779 return NVME_SUCCESS; 4780 } 4781 4782 static inline void nvme_set_timestamp(NvmeCtrl *n, uint64_t ts) 4783 { 4784 trace_pci_nvme_setfeat_timestamp(ts); 4785 4786 n->host_timestamp = le64_to_cpu(ts); 4787 n->timestamp_set_qemu_clock_ms = qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL); 4788 } 4789 4790 static inline uint64_t nvme_get_timestamp(const NvmeCtrl *n) 4791 { 4792 uint64_t current_time = qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL); 4793 uint64_t elapsed_time = current_time - n->timestamp_set_qemu_clock_ms; 4794 4795 union nvme_timestamp { 4796 struct { 4797 uint64_t timestamp:48; 4798 uint64_t sync:1; 4799 uint64_t origin:3; 4800 uint64_t rsvd1:12; 4801 }; 4802 uint64_t all; 4803 }; 4804 4805 union nvme_timestamp ts; 4806 ts.all = 0; 4807 ts.timestamp = n->host_timestamp + elapsed_time; 4808 4809 /* If the host timestamp is non-zero, set the timestamp origin */ 4810 ts.origin = n->host_timestamp ? 0x01 : 0x00; 4811 4812 trace_pci_nvme_getfeat_timestamp(ts.all); 4813 4814 return cpu_to_le64(ts.all); 4815 } 4816 4817 static uint16_t nvme_get_feature_timestamp(NvmeCtrl *n, NvmeRequest *req) 4818 { 4819 uint64_t timestamp = nvme_get_timestamp(n); 4820 4821 return nvme_c2h(n, (uint8_t *)×tamp, sizeof(timestamp), req); 4822 } 4823 4824 static uint16_t nvme_get_feature(NvmeCtrl *n, NvmeRequest *req) 4825 { 4826 NvmeCmd *cmd = &req->cmd; 4827 uint32_t dw10 = le32_to_cpu(cmd->cdw10); 4828 uint32_t dw11 = le32_to_cpu(cmd->cdw11); 4829 uint32_t nsid = le32_to_cpu(cmd->nsid); 4830 uint32_t result; 4831 uint8_t fid = NVME_GETSETFEAT_FID(dw10); 4832 NvmeGetFeatureSelect sel = NVME_GETFEAT_SELECT(dw10); 4833 uint16_t iv; 4834 NvmeNamespace *ns; 4835 int i; 4836 4837 static const uint32_t nvme_feature_default[NVME_FID_MAX] = { 4838 [NVME_ARBITRATION] = NVME_ARB_AB_NOLIMIT, 4839 }; 4840 4841 trace_pci_nvme_getfeat(nvme_cid(req), nsid, fid, sel, dw11); 4842 4843 if (!nvme_feature_support[fid]) { 4844 return NVME_INVALID_FIELD | NVME_DNR; 4845 } 4846 4847 if (nvme_feature_cap[fid] & NVME_FEAT_CAP_NS) { 4848 if (!nvme_nsid_valid(n, nsid) || nsid == NVME_NSID_BROADCAST) { 4849 /* 4850 * The Reservation Notification Mask and Reservation Persistence 4851 * features require a status code of Invalid Field in Command when 4852 * NSID is FFFFFFFFh. Since the device does not support those 4853 * features we can always return Invalid Namespace or Format as we 4854 * should do for all other features. 4855 */ 4856 return NVME_INVALID_NSID | NVME_DNR; 4857 } 4858 4859 if (!nvme_ns(n, nsid)) { 4860 return NVME_INVALID_FIELD | NVME_DNR; 4861 } 4862 } 4863 4864 switch (sel) { 4865 case NVME_GETFEAT_SELECT_CURRENT: 4866 break; 4867 case NVME_GETFEAT_SELECT_SAVED: 4868 /* no features are saveable by the controller; fallthrough */ 4869 case NVME_GETFEAT_SELECT_DEFAULT: 4870 goto defaults; 4871 case NVME_GETFEAT_SELECT_CAP: 4872 result = nvme_feature_cap[fid]; 4873 goto out; 4874 } 4875 4876 switch (fid) { 4877 case NVME_TEMPERATURE_THRESHOLD: 4878 result = 0; 4879 4880 /* 4881 * The controller only implements the Composite Temperature sensor, so 4882 * return 0 for all other sensors. 4883 */ 4884 if (NVME_TEMP_TMPSEL(dw11) != NVME_TEMP_TMPSEL_COMPOSITE) { 4885 goto out; 4886 } 4887 4888 switch (NVME_TEMP_THSEL(dw11)) { 4889 case NVME_TEMP_THSEL_OVER: 4890 result = n->features.temp_thresh_hi; 4891 goto out; 4892 case NVME_TEMP_THSEL_UNDER: 4893 result = n->features.temp_thresh_low; 4894 goto out; 4895 } 4896 4897 return NVME_INVALID_FIELD | NVME_DNR; 4898 case NVME_ERROR_RECOVERY: 4899 if (!nvme_nsid_valid(n, nsid)) { 4900 return NVME_INVALID_NSID | NVME_DNR; 4901 } 4902 4903 ns = nvme_ns(n, nsid); 4904 if (unlikely(!ns)) { 4905 return NVME_INVALID_FIELD | NVME_DNR; 4906 } 4907 4908 result = ns->features.err_rec; 4909 goto out; 4910 case NVME_VOLATILE_WRITE_CACHE: 4911 result = 0; 4912 for (i = 1; i <= NVME_MAX_NAMESPACES; i++) { 4913 ns = nvme_ns(n, i); 4914 if (!ns) { 4915 continue; 4916 } 4917 4918 result = blk_enable_write_cache(ns->blkconf.blk); 4919 if (result) { 4920 break; 4921 } 4922 } 4923 trace_pci_nvme_getfeat_vwcache(result ? "enabled" : "disabled"); 4924 goto out; 4925 case NVME_ASYNCHRONOUS_EVENT_CONF: 4926 result = n->features.async_config; 4927 goto out; 4928 case NVME_TIMESTAMP: 4929 return nvme_get_feature_timestamp(n, req); 4930 default: 4931 break; 4932 } 4933 4934 defaults: 4935 switch (fid) { 4936 case NVME_TEMPERATURE_THRESHOLD: 4937 result = 0; 4938 4939 if (NVME_TEMP_TMPSEL(dw11) != NVME_TEMP_TMPSEL_COMPOSITE) { 4940 break; 4941 } 4942 4943 if (NVME_TEMP_THSEL(dw11) == NVME_TEMP_THSEL_OVER) { 4944 result = NVME_TEMPERATURE_WARNING; 4945 } 4946 4947 break; 4948 case NVME_NUMBER_OF_QUEUES: 4949 result = (n->params.max_ioqpairs - 1) | 4950 ((n->params.max_ioqpairs - 1) << 16); 4951 trace_pci_nvme_getfeat_numq(result); 4952 break; 4953 case NVME_INTERRUPT_VECTOR_CONF: 4954 iv = dw11 & 0xffff; 4955 if (iv >= n->params.max_ioqpairs + 1) { 4956 return NVME_INVALID_FIELD | NVME_DNR; 4957 } 4958 4959 result = iv; 4960 if (iv == n->admin_cq.vector) { 4961 result |= NVME_INTVC_NOCOALESCING; 4962 } 4963 break; 4964 default: 4965 result = nvme_feature_default[fid]; 4966 break; 4967 } 4968 4969 out: 4970 req->cqe.result = cpu_to_le32(result); 4971 return NVME_SUCCESS; 4972 } 4973 4974 static uint16_t nvme_set_feature_timestamp(NvmeCtrl *n, NvmeRequest *req) 4975 { 4976 uint16_t ret; 4977 uint64_t timestamp; 4978 4979 ret = nvme_h2c(n, (uint8_t *)×tamp, sizeof(timestamp), req); 4980 if (ret) { 4981 return ret; 4982 } 4983 4984 nvme_set_timestamp(n, timestamp); 4985 4986 return NVME_SUCCESS; 4987 } 4988 4989 static uint16_t nvme_set_feature(NvmeCtrl *n, NvmeRequest *req) 4990 { 4991 NvmeNamespace *ns = NULL; 4992 4993 NvmeCmd *cmd = &req->cmd; 4994 uint32_t dw10 = le32_to_cpu(cmd->cdw10); 4995 uint32_t dw11 = le32_to_cpu(cmd->cdw11); 4996 uint32_t nsid = le32_to_cpu(cmd->nsid); 4997 uint8_t fid = NVME_GETSETFEAT_FID(dw10); 4998 uint8_t save = NVME_SETFEAT_SAVE(dw10); 4999 int i; 5000 5001 trace_pci_nvme_setfeat(nvme_cid(req), nsid, fid, save, dw11); 5002 5003 if (save && !(nvme_feature_cap[fid] & NVME_FEAT_CAP_SAVE)) { 5004 return NVME_FID_NOT_SAVEABLE | NVME_DNR; 5005 } 5006 5007 if (!nvme_feature_support[fid]) { 5008 return NVME_INVALID_FIELD | NVME_DNR; 5009 } 5010 5011 if (nvme_feature_cap[fid] & NVME_FEAT_CAP_NS) { 5012 if (nsid != NVME_NSID_BROADCAST) { 5013 if (!nvme_nsid_valid(n, nsid)) { 5014 return NVME_INVALID_NSID | NVME_DNR; 5015 } 5016 5017 ns = nvme_ns(n, nsid); 5018 if (unlikely(!ns)) { 5019 return NVME_INVALID_FIELD | NVME_DNR; 5020 } 5021 } 5022 } else if (nsid && nsid != NVME_NSID_BROADCAST) { 5023 if (!nvme_nsid_valid(n, nsid)) { 5024 return NVME_INVALID_NSID | NVME_DNR; 5025 } 5026 5027 return NVME_FEAT_NOT_NS_SPEC | NVME_DNR; 5028 } 5029 5030 if (!(nvme_feature_cap[fid] & NVME_FEAT_CAP_CHANGE)) { 5031 return NVME_FEAT_NOT_CHANGEABLE | NVME_DNR; 5032 } 5033 5034 switch (fid) { 5035 case NVME_TEMPERATURE_THRESHOLD: 5036 if (NVME_TEMP_TMPSEL(dw11) != NVME_TEMP_TMPSEL_COMPOSITE) { 5037 break; 5038 } 5039 5040 switch (NVME_TEMP_THSEL(dw11)) { 5041 case NVME_TEMP_THSEL_OVER: 5042 n->features.temp_thresh_hi = NVME_TEMP_TMPTH(dw11); 5043 break; 5044 case NVME_TEMP_THSEL_UNDER: 5045 n->features.temp_thresh_low = NVME_TEMP_TMPTH(dw11); 5046 break; 5047 default: 5048 return NVME_INVALID_FIELD | NVME_DNR; 5049 } 5050 5051 if ((n->temperature >= n->features.temp_thresh_hi) || 5052 (n->temperature <= n->features.temp_thresh_low)) { 5053 nvme_smart_event(n, NVME_AER_INFO_SMART_TEMP_THRESH); 5054 } 5055 5056 break; 5057 case NVME_ERROR_RECOVERY: 5058 if (nsid == NVME_NSID_BROADCAST) { 5059 for (i = 1; i <= NVME_MAX_NAMESPACES; i++) { 5060 ns = nvme_ns(n, i); 5061 5062 if (!ns) { 5063 continue; 5064 } 5065 5066 if (NVME_ID_NS_NSFEAT_DULBE(ns->id_ns.nsfeat)) { 5067 ns->features.err_rec = dw11; 5068 } 5069 } 5070 5071 break; 5072 } 5073 5074 assert(ns); 5075 if (NVME_ID_NS_NSFEAT_DULBE(ns->id_ns.nsfeat)) { 5076 ns->features.err_rec = dw11; 5077 } 5078 break; 5079 case NVME_VOLATILE_WRITE_CACHE: 5080 for (i = 1; i <= NVME_MAX_NAMESPACES; i++) { 5081 ns = nvme_ns(n, i); 5082 if (!ns) { 5083 continue; 5084 } 5085 5086 if (!(dw11 & 0x1) && blk_enable_write_cache(ns->blkconf.blk)) { 5087 blk_flush(ns->blkconf.blk); 5088 } 5089 5090 blk_set_enable_write_cache(ns->blkconf.blk, dw11 & 1); 5091 } 5092 5093 break; 5094 5095 case NVME_NUMBER_OF_QUEUES: 5096 if (n->qs_created) { 5097 return NVME_CMD_SEQ_ERROR | NVME_DNR; 5098 } 5099 5100 /* 5101 * NVMe v1.3, Section 5.21.1.7: FFFFh is not an allowed value for NCQR 5102 * and NSQR. 5103 */ 5104 if ((dw11 & 0xffff) == 0xffff || ((dw11 >> 16) & 0xffff) == 0xffff) { 5105 return NVME_INVALID_FIELD | NVME_DNR; 5106 } 5107 5108 trace_pci_nvme_setfeat_numq((dw11 & 0xffff) + 1, 5109 ((dw11 >> 16) & 0xffff) + 1, 5110 n->params.max_ioqpairs, 5111 n->params.max_ioqpairs); 5112 req->cqe.result = cpu_to_le32((n->params.max_ioqpairs - 1) | 5113 ((n->params.max_ioqpairs - 1) << 16)); 5114 break; 5115 case NVME_ASYNCHRONOUS_EVENT_CONF: 5116 n->features.async_config = dw11; 5117 break; 5118 case NVME_TIMESTAMP: 5119 return nvme_set_feature_timestamp(n, req); 5120 case NVME_COMMAND_SET_PROFILE: 5121 if (dw11 & 0x1ff) { 5122 trace_pci_nvme_err_invalid_iocsci(dw11 & 0x1ff); 5123 return NVME_CMD_SET_CMB_REJECTED | NVME_DNR; 5124 } 5125 break; 5126 default: 5127 return NVME_FEAT_NOT_CHANGEABLE | NVME_DNR; 5128 } 5129 return NVME_SUCCESS; 5130 } 5131 5132 static uint16_t nvme_aer(NvmeCtrl *n, NvmeRequest *req) 5133 { 5134 trace_pci_nvme_aer(nvme_cid(req)); 5135 5136 if (n->outstanding_aers > n->params.aerl) { 5137 trace_pci_nvme_aer_aerl_exceeded(); 5138 return NVME_AER_LIMIT_EXCEEDED; 5139 } 5140 5141 n->aer_reqs[n->outstanding_aers] = req; 5142 n->outstanding_aers++; 5143 5144 if (!QTAILQ_EMPTY(&n->aer_queue)) { 5145 nvme_process_aers(n); 5146 } 5147 5148 return NVME_NO_COMPLETE; 5149 } 5150 5151 static void nvme_update_dmrsl(NvmeCtrl *n) 5152 { 5153 int nsid; 5154 5155 for (nsid = 1; nsid <= NVME_MAX_NAMESPACES; nsid++) { 5156 NvmeNamespace *ns = nvme_ns(n, nsid); 5157 if (!ns) { 5158 continue; 5159 } 5160 5161 n->dmrsl = MIN_NON_ZERO(n->dmrsl, 5162 BDRV_REQUEST_MAX_BYTES / nvme_l2b(ns, 1)); 5163 } 5164 } 5165 5166 static void nvme_select_iocs_ns(NvmeCtrl *n, NvmeNamespace *ns) 5167 { 5168 uint32_t cc = ldl_le_p(&n->bar.cc); 5169 5170 ns->iocs = nvme_cse_iocs_none; 5171 switch (ns->csi) { 5172 case NVME_CSI_NVM: 5173 if (NVME_CC_CSS(cc) != NVME_CC_CSS_ADMIN_ONLY) { 5174 ns->iocs = nvme_cse_iocs_nvm; 5175 } 5176 break; 5177 case NVME_CSI_ZONED: 5178 if (NVME_CC_CSS(cc) == NVME_CC_CSS_CSI) { 5179 ns->iocs = nvme_cse_iocs_zoned; 5180 } else if (NVME_CC_CSS(cc) == NVME_CC_CSS_NVM) { 5181 ns->iocs = nvme_cse_iocs_nvm; 5182 } 5183 break; 5184 } 5185 } 5186 5187 static uint16_t nvme_ns_attachment(NvmeCtrl *n, NvmeRequest *req) 5188 { 5189 NvmeNamespace *ns; 5190 NvmeCtrl *ctrl; 5191 uint16_t list[NVME_CONTROLLER_LIST_SIZE] = {}; 5192 uint32_t nsid = le32_to_cpu(req->cmd.nsid); 5193 uint32_t dw10 = le32_to_cpu(req->cmd.cdw10); 5194 bool attach = !(dw10 & 0xf); 5195 uint16_t *nr_ids = &list[0]; 5196 uint16_t *ids = &list[1]; 5197 uint16_t ret; 5198 int i; 5199 5200 trace_pci_nvme_ns_attachment(nvme_cid(req), dw10 & 0xf); 5201 5202 if (!nvme_nsid_valid(n, nsid)) { 5203 return NVME_INVALID_NSID | NVME_DNR; 5204 } 5205 5206 ns = nvme_subsys_ns(n->subsys, nsid); 5207 if (!ns) { 5208 return NVME_INVALID_FIELD | NVME_DNR; 5209 } 5210 5211 ret = nvme_h2c(n, (uint8_t *)list, 4096, req); 5212 if (ret) { 5213 return ret; 5214 } 5215 5216 if (!*nr_ids) { 5217 return NVME_NS_CTRL_LIST_INVALID | NVME_DNR; 5218 } 5219 5220 *nr_ids = MIN(*nr_ids, NVME_CONTROLLER_LIST_SIZE - 1); 5221 for (i = 0; i < *nr_ids; i++) { 5222 ctrl = nvme_subsys_ctrl(n->subsys, ids[i]); 5223 if (!ctrl) { 5224 return NVME_NS_CTRL_LIST_INVALID | NVME_DNR; 5225 } 5226 5227 if (attach) { 5228 if (nvme_ns(ctrl, nsid)) { 5229 return NVME_NS_ALREADY_ATTACHED | NVME_DNR; 5230 } 5231 5232 if (ns->attached && !ns->params.shared) { 5233 return NVME_NS_PRIVATE | NVME_DNR; 5234 } 5235 5236 nvme_attach_ns(ctrl, ns); 5237 nvme_select_iocs_ns(ctrl, ns); 5238 } else { 5239 if (!nvme_ns(ctrl, nsid)) { 5240 return NVME_NS_NOT_ATTACHED | NVME_DNR; 5241 } 5242 5243 ctrl->namespaces[nsid] = NULL; 5244 ns->attached--; 5245 5246 nvme_update_dmrsl(ctrl); 5247 } 5248 5249 /* 5250 * Add namespace id to the changed namespace id list for event clearing 5251 * via Get Log Page command. 5252 */ 5253 if (!test_and_set_bit(nsid, ctrl->changed_nsids)) { 5254 nvme_enqueue_event(ctrl, NVME_AER_TYPE_NOTICE, 5255 NVME_AER_INFO_NOTICE_NS_ATTR_CHANGED, 5256 NVME_LOG_CHANGED_NSLIST); 5257 } 5258 } 5259 5260 return NVME_SUCCESS; 5261 } 5262 5263 typedef struct NvmeFormatAIOCB { 5264 BlockAIOCB common; 5265 BlockAIOCB *aiocb; 5266 QEMUBH *bh; 5267 NvmeRequest *req; 5268 int ret; 5269 5270 NvmeNamespace *ns; 5271 uint32_t nsid; 5272 bool broadcast; 5273 int64_t offset; 5274 } NvmeFormatAIOCB; 5275 5276 static void nvme_format_bh(void *opaque); 5277 5278 static void nvme_format_cancel(BlockAIOCB *aiocb) 5279 { 5280 NvmeFormatAIOCB *iocb = container_of(aiocb, NvmeFormatAIOCB, common); 5281 5282 if (iocb->aiocb) { 5283 blk_aio_cancel_async(iocb->aiocb); 5284 } 5285 } 5286 5287 static const AIOCBInfo nvme_format_aiocb_info = { 5288 .aiocb_size = sizeof(NvmeFormatAIOCB), 5289 .cancel_async = nvme_format_cancel, 5290 .get_aio_context = nvme_get_aio_context, 5291 }; 5292 5293 static void nvme_format_set(NvmeNamespace *ns, NvmeCmd *cmd) 5294 { 5295 uint32_t dw10 = le32_to_cpu(cmd->cdw10); 5296 uint8_t lbaf = dw10 & 0xf; 5297 uint8_t pi = (dw10 >> 5) & 0x7; 5298 uint8_t mset = (dw10 >> 4) & 0x1; 5299 uint8_t pil = (dw10 >> 8) & 0x1; 5300 5301 trace_pci_nvme_format_set(ns->params.nsid, lbaf, mset, pi, pil); 5302 5303 ns->id_ns.dps = (pil << 3) | pi; 5304 ns->id_ns.flbas = lbaf | (mset << 4); 5305 5306 nvme_ns_init_format(ns); 5307 } 5308 5309 static void nvme_format_ns_cb(void *opaque, int ret) 5310 { 5311 NvmeFormatAIOCB *iocb = opaque; 5312 NvmeRequest *req = iocb->req; 5313 NvmeNamespace *ns = iocb->ns; 5314 int bytes; 5315 5316 if (ret < 0) { 5317 iocb->ret = ret; 5318 goto done; 5319 } 5320 5321 assert(ns); 5322 5323 if (iocb->offset < ns->size) { 5324 bytes = MIN(BDRV_REQUEST_MAX_BYTES, ns->size - iocb->offset); 5325 5326 iocb->aiocb = blk_aio_pwrite_zeroes(ns->blkconf.blk, iocb->offset, 5327 bytes, BDRV_REQ_MAY_UNMAP, 5328 nvme_format_ns_cb, iocb); 5329 5330 iocb->offset += bytes; 5331 return; 5332 } 5333 5334 nvme_format_set(ns, &req->cmd); 5335 ns->status = 0x0; 5336 iocb->ns = NULL; 5337 iocb->offset = 0; 5338 5339 done: 5340 iocb->aiocb = NULL; 5341 qemu_bh_schedule(iocb->bh); 5342 } 5343 5344 static uint16_t nvme_format_check(NvmeNamespace *ns, uint8_t lbaf, uint8_t pi) 5345 { 5346 if (ns->params.zoned) { 5347 return NVME_INVALID_FORMAT | NVME_DNR; 5348 } 5349 5350 if (lbaf > ns->id_ns.nlbaf) { 5351 return NVME_INVALID_FORMAT | NVME_DNR; 5352 } 5353 5354 if (pi && (ns->id_ns.lbaf[lbaf].ms < sizeof(NvmeDifTuple))) { 5355 return NVME_INVALID_FORMAT | NVME_DNR; 5356 } 5357 5358 if (pi && pi > NVME_ID_NS_DPS_TYPE_3) { 5359 return NVME_INVALID_FIELD | NVME_DNR; 5360 } 5361 5362 return NVME_SUCCESS; 5363 } 5364 5365 static void nvme_format_bh(void *opaque) 5366 { 5367 NvmeFormatAIOCB *iocb = opaque; 5368 NvmeRequest *req = iocb->req; 5369 NvmeCtrl *n = nvme_ctrl(req); 5370 uint32_t dw10 = le32_to_cpu(req->cmd.cdw10); 5371 uint8_t lbaf = dw10 & 0xf; 5372 uint8_t pi = (dw10 >> 5) & 0x7; 5373 uint16_t status; 5374 int i; 5375 5376 if (iocb->ret < 0) { 5377 goto done; 5378 } 5379 5380 if (iocb->broadcast) { 5381 for (i = iocb->nsid + 1; i <= NVME_MAX_NAMESPACES; i++) { 5382 iocb->ns = nvme_ns(n, i); 5383 if (iocb->ns) { 5384 iocb->nsid = i; 5385 break; 5386 } 5387 } 5388 } 5389 5390 if (!iocb->ns) { 5391 goto done; 5392 } 5393 5394 status = nvme_format_check(iocb->ns, lbaf, pi); 5395 if (status) { 5396 req->status = status; 5397 goto done; 5398 } 5399 5400 iocb->ns->status = NVME_FORMAT_IN_PROGRESS; 5401 nvme_format_ns_cb(iocb, 0); 5402 return; 5403 5404 done: 5405 qemu_bh_delete(iocb->bh); 5406 iocb->bh = NULL; 5407 5408 iocb->common.cb(iocb->common.opaque, iocb->ret); 5409 5410 qemu_aio_unref(iocb); 5411 } 5412 5413 static uint16_t nvme_format(NvmeCtrl *n, NvmeRequest *req) 5414 { 5415 NvmeFormatAIOCB *iocb; 5416 uint32_t nsid = le32_to_cpu(req->cmd.nsid); 5417 uint16_t status; 5418 5419 iocb = qemu_aio_get(&nvme_format_aiocb_info, NULL, nvme_misc_cb, req); 5420 5421 iocb->req = req; 5422 iocb->bh = qemu_bh_new(nvme_format_bh, iocb); 5423 iocb->ret = 0; 5424 iocb->ns = NULL; 5425 iocb->nsid = 0; 5426 iocb->broadcast = (nsid == NVME_NSID_BROADCAST); 5427 iocb->offset = 0; 5428 5429 if (!iocb->broadcast) { 5430 if (!nvme_nsid_valid(n, nsid)) { 5431 status = NVME_INVALID_NSID | NVME_DNR; 5432 goto out; 5433 } 5434 5435 iocb->ns = nvme_ns(n, nsid); 5436 if (!iocb->ns) { 5437 status = NVME_INVALID_FIELD | NVME_DNR; 5438 goto out; 5439 } 5440 } 5441 5442 req->aiocb = &iocb->common; 5443 qemu_bh_schedule(iocb->bh); 5444 5445 return NVME_NO_COMPLETE; 5446 5447 out: 5448 qemu_bh_delete(iocb->bh); 5449 iocb->bh = NULL; 5450 qemu_aio_unref(iocb); 5451 return status; 5452 } 5453 5454 static uint16_t nvme_admin_cmd(NvmeCtrl *n, NvmeRequest *req) 5455 { 5456 trace_pci_nvme_admin_cmd(nvme_cid(req), nvme_sqid(req), req->cmd.opcode, 5457 nvme_adm_opc_str(req->cmd.opcode)); 5458 5459 if (!(nvme_cse_acs[req->cmd.opcode] & NVME_CMD_EFF_CSUPP)) { 5460 trace_pci_nvme_err_invalid_admin_opc(req->cmd.opcode); 5461 return NVME_INVALID_OPCODE | NVME_DNR; 5462 } 5463 5464 /* SGLs shall not be used for Admin commands in NVMe over PCIe */ 5465 if (NVME_CMD_FLAGS_PSDT(req->cmd.flags) != NVME_PSDT_PRP) { 5466 return NVME_INVALID_FIELD | NVME_DNR; 5467 } 5468 5469 switch (req->cmd.opcode) { 5470 case NVME_ADM_CMD_DELETE_SQ: 5471 return nvme_del_sq(n, req); 5472 case NVME_ADM_CMD_CREATE_SQ: 5473 return nvme_create_sq(n, req); 5474 case NVME_ADM_CMD_GET_LOG_PAGE: 5475 return nvme_get_log(n, req); 5476 case NVME_ADM_CMD_DELETE_CQ: 5477 return nvme_del_cq(n, req); 5478 case NVME_ADM_CMD_CREATE_CQ: 5479 return nvme_create_cq(n, req); 5480 case NVME_ADM_CMD_IDENTIFY: 5481 return nvme_identify(n, req); 5482 case NVME_ADM_CMD_ABORT: 5483 return nvme_abort(n, req); 5484 case NVME_ADM_CMD_SET_FEATURES: 5485 return nvme_set_feature(n, req); 5486 case NVME_ADM_CMD_GET_FEATURES: 5487 return nvme_get_feature(n, req); 5488 case NVME_ADM_CMD_ASYNC_EV_REQ: 5489 return nvme_aer(n, req); 5490 case NVME_ADM_CMD_NS_ATTACHMENT: 5491 return nvme_ns_attachment(n, req); 5492 case NVME_ADM_CMD_FORMAT_NVM: 5493 return nvme_format(n, req); 5494 default: 5495 assert(false); 5496 } 5497 5498 return NVME_INVALID_OPCODE | NVME_DNR; 5499 } 5500 5501 static void nvme_process_sq(void *opaque) 5502 { 5503 NvmeSQueue *sq = opaque; 5504 NvmeCtrl *n = sq->ctrl; 5505 NvmeCQueue *cq = n->cq[sq->cqid]; 5506 5507 uint16_t status; 5508 hwaddr addr; 5509 NvmeCmd cmd; 5510 NvmeRequest *req; 5511 5512 while (!(nvme_sq_empty(sq) || QTAILQ_EMPTY(&sq->req_list))) { 5513 addr = sq->dma_addr + sq->head * n->sqe_size; 5514 if (nvme_addr_read(n, addr, (void *)&cmd, sizeof(cmd))) { 5515 trace_pci_nvme_err_addr_read(addr); 5516 trace_pci_nvme_err_cfs(); 5517 stl_le_p(&n->bar.csts, NVME_CSTS_FAILED); 5518 break; 5519 } 5520 nvme_inc_sq_head(sq); 5521 5522 req = QTAILQ_FIRST(&sq->req_list); 5523 QTAILQ_REMOVE(&sq->req_list, req, entry); 5524 QTAILQ_INSERT_TAIL(&sq->out_req_list, req, entry); 5525 nvme_req_clear(req); 5526 req->cqe.cid = cmd.cid; 5527 memcpy(&req->cmd, &cmd, sizeof(NvmeCmd)); 5528 5529 status = sq->sqid ? nvme_io_cmd(n, req) : 5530 nvme_admin_cmd(n, req); 5531 if (status != NVME_NO_COMPLETE) { 5532 req->status = status; 5533 nvme_enqueue_req_completion(cq, req); 5534 } 5535 } 5536 } 5537 5538 static void nvme_ctrl_reset(NvmeCtrl *n) 5539 { 5540 NvmeNamespace *ns; 5541 int i; 5542 5543 for (i = 1; i <= NVME_MAX_NAMESPACES; i++) { 5544 ns = nvme_ns(n, i); 5545 if (!ns) { 5546 continue; 5547 } 5548 5549 nvme_ns_drain(ns); 5550 } 5551 5552 for (i = 0; i < n->params.max_ioqpairs + 1; i++) { 5553 if (n->sq[i] != NULL) { 5554 nvme_free_sq(n->sq[i], n); 5555 } 5556 } 5557 for (i = 0; i < n->params.max_ioqpairs + 1; i++) { 5558 if (n->cq[i] != NULL) { 5559 nvme_free_cq(n->cq[i], n); 5560 } 5561 } 5562 5563 while (!QTAILQ_EMPTY(&n->aer_queue)) { 5564 NvmeAsyncEvent *event = QTAILQ_FIRST(&n->aer_queue); 5565 QTAILQ_REMOVE(&n->aer_queue, event, entry); 5566 g_free(event); 5567 } 5568 5569 n->aer_queued = 0; 5570 n->outstanding_aers = 0; 5571 n->qs_created = false; 5572 } 5573 5574 static void nvme_ctrl_shutdown(NvmeCtrl *n) 5575 { 5576 NvmeNamespace *ns; 5577 int i; 5578 5579 if (n->pmr.dev) { 5580 memory_region_msync(&n->pmr.dev->mr, 0, n->pmr.dev->size); 5581 } 5582 5583 for (i = 1; i <= NVME_MAX_NAMESPACES; i++) { 5584 ns = nvme_ns(n, i); 5585 if (!ns) { 5586 continue; 5587 } 5588 5589 nvme_ns_shutdown(ns); 5590 } 5591 } 5592 5593 static void nvme_select_iocs(NvmeCtrl *n) 5594 { 5595 NvmeNamespace *ns; 5596 int i; 5597 5598 for (i = 1; i <= NVME_MAX_NAMESPACES; i++) { 5599 ns = nvme_ns(n, i); 5600 if (!ns) { 5601 continue; 5602 } 5603 5604 nvme_select_iocs_ns(n, ns); 5605 } 5606 } 5607 5608 static int nvme_start_ctrl(NvmeCtrl *n) 5609 { 5610 uint64_t cap = ldq_le_p(&n->bar.cap); 5611 uint32_t cc = ldl_le_p(&n->bar.cc); 5612 uint32_t aqa = ldl_le_p(&n->bar.aqa); 5613 uint64_t asq = ldq_le_p(&n->bar.asq); 5614 uint64_t acq = ldq_le_p(&n->bar.acq); 5615 uint32_t page_bits = NVME_CC_MPS(cc) + 12; 5616 uint32_t page_size = 1 << page_bits; 5617 5618 if (unlikely(n->cq[0])) { 5619 trace_pci_nvme_err_startfail_cq(); 5620 return -1; 5621 } 5622 if (unlikely(n->sq[0])) { 5623 trace_pci_nvme_err_startfail_sq(); 5624 return -1; 5625 } 5626 if (unlikely(!asq)) { 5627 trace_pci_nvme_err_startfail_nbarasq(); 5628 return -1; 5629 } 5630 if (unlikely(!acq)) { 5631 trace_pci_nvme_err_startfail_nbaracq(); 5632 return -1; 5633 } 5634 if (unlikely(asq & (page_size - 1))) { 5635 trace_pci_nvme_err_startfail_asq_misaligned(asq); 5636 return -1; 5637 } 5638 if (unlikely(acq & (page_size - 1))) { 5639 trace_pci_nvme_err_startfail_acq_misaligned(acq); 5640 return -1; 5641 } 5642 if (unlikely(!(NVME_CAP_CSS(cap) & (1 << NVME_CC_CSS(cc))))) { 5643 trace_pci_nvme_err_startfail_css(NVME_CC_CSS(cc)); 5644 return -1; 5645 } 5646 if (unlikely(NVME_CC_MPS(cc) < NVME_CAP_MPSMIN(cap))) { 5647 trace_pci_nvme_err_startfail_page_too_small( 5648 NVME_CC_MPS(cc), 5649 NVME_CAP_MPSMIN(cap)); 5650 return -1; 5651 } 5652 if (unlikely(NVME_CC_MPS(cc) > 5653 NVME_CAP_MPSMAX(cap))) { 5654 trace_pci_nvme_err_startfail_page_too_large( 5655 NVME_CC_MPS(cc), 5656 NVME_CAP_MPSMAX(cap)); 5657 return -1; 5658 } 5659 if (unlikely(NVME_CC_IOCQES(cc) < 5660 NVME_CTRL_CQES_MIN(n->id_ctrl.cqes))) { 5661 trace_pci_nvme_err_startfail_cqent_too_small( 5662 NVME_CC_IOCQES(cc), 5663 NVME_CTRL_CQES_MIN(cap)); 5664 return -1; 5665 } 5666 if (unlikely(NVME_CC_IOCQES(cc) > 5667 NVME_CTRL_CQES_MAX(n->id_ctrl.cqes))) { 5668 trace_pci_nvme_err_startfail_cqent_too_large( 5669 NVME_CC_IOCQES(cc), 5670 NVME_CTRL_CQES_MAX(cap)); 5671 return -1; 5672 } 5673 if (unlikely(NVME_CC_IOSQES(cc) < 5674 NVME_CTRL_SQES_MIN(n->id_ctrl.sqes))) { 5675 trace_pci_nvme_err_startfail_sqent_too_small( 5676 NVME_CC_IOSQES(cc), 5677 NVME_CTRL_SQES_MIN(cap)); 5678 return -1; 5679 } 5680 if (unlikely(NVME_CC_IOSQES(cc) > 5681 NVME_CTRL_SQES_MAX(n->id_ctrl.sqes))) { 5682 trace_pci_nvme_err_startfail_sqent_too_large( 5683 NVME_CC_IOSQES(cc), 5684 NVME_CTRL_SQES_MAX(cap)); 5685 return -1; 5686 } 5687 if (unlikely(!NVME_AQA_ASQS(aqa))) { 5688 trace_pci_nvme_err_startfail_asqent_sz_zero(); 5689 return -1; 5690 } 5691 if (unlikely(!NVME_AQA_ACQS(aqa))) { 5692 trace_pci_nvme_err_startfail_acqent_sz_zero(); 5693 return -1; 5694 } 5695 5696 n->page_bits = page_bits; 5697 n->page_size = page_size; 5698 n->max_prp_ents = n->page_size / sizeof(uint64_t); 5699 n->cqe_size = 1 << NVME_CC_IOCQES(cc); 5700 n->sqe_size = 1 << NVME_CC_IOSQES(cc); 5701 nvme_init_cq(&n->admin_cq, n, acq, 0, 0, NVME_AQA_ACQS(aqa) + 1, 1); 5702 nvme_init_sq(&n->admin_sq, n, asq, 0, 0, NVME_AQA_ASQS(aqa) + 1); 5703 5704 nvme_set_timestamp(n, 0ULL); 5705 5706 QTAILQ_INIT(&n->aer_queue); 5707 5708 nvme_select_iocs(n); 5709 5710 return 0; 5711 } 5712 5713 static void nvme_cmb_enable_regs(NvmeCtrl *n) 5714 { 5715 uint32_t cmbloc = ldl_le_p(&n->bar.cmbloc); 5716 uint32_t cmbsz = ldl_le_p(&n->bar.cmbsz); 5717 5718 NVME_CMBLOC_SET_CDPCILS(cmbloc, 1); 5719 NVME_CMBLOC_SET_CDPMLS(cmbloc, 1); 5720 NVME_CMBLOC_SET_BIR(cmbloc, NVME_CMB_BIR); 5721 stl_le_p(&n->bar.cmbloc, cmbloc); 5722 5723 NVME_CMBSZ_SET_SQS(cmbsz, 1); 5724 NVME_CMBSZ_SET_CQS(cmbsz, 0); 5725 NVME_CMBSZ_SET_LISTS(cmbsz, 1); 5726 NVME_CMBSZ_SET_RDS(cmbsz, 1); 5727 NVME_CMBSZ_SET_WDS(cmbsz, 1); 5728 NVME_CMBSZ_SET_SZU(cmbsz, 2); /* MBs */ 5729 NVME_CMBSZ_SET_SZ(cmbsz, n->params.cmb_size_mb); 5730 stl_le_p(&n->bar.cmbsz, cmbsz); 5731 } 5732 5733 static void nvme_write_bar(NvmeCtrl *n, hwaddr offset, uint64_t data, 5734 unsigned size) 5735 { 5736 uint64_t cap = ldq_le_p(&n->bar.cap); 5737 uint32_t cc = ldl_le_p(&n->bar.cc); 5738 uint32_t intms = ldl_le_p(&n->bar.intms); 5739 uint32_t csts = ldl_le_p(&n->bar.csts); 5740 uint32_t pmrsts = ldl_le_p(&n->bar.pmrsts); 5741 5742 if (unlikely(offset & (sizeof(uint32_t) - 1))) { 5743 NVME_GUEST_ERR(pci_nvme_ub_mmiowr_misaligned32, 5744 "MMIO write not 32-bit aligned," 5745 " offset=0x%"PRIx64"", offset); 5746 /* should be ignored, fall through for now */ 5747 } 5748 5749 if (unlikely(size < sizeof(uint32_t))) { 5750 NVME_GUEST_ERR(pci_nvme_ub_mmiowr_toosmall, 5751 "MMIO write smaller than 32-bits," 5752 " offset=0x%"PRIx64", size=%u", 5753 offset, size); 5754 /* should be ignored, fall through for now */ 5755 } 5756 5757 switch (offset) { 5758 case NVME_REG_INTMS: 5759 if (unlikely(msix_enabled(&(n->parent_obj)))) { 5760 NVME_GUEST_ERR(pci_nvme_ub_mmiowr_intmask_with_msix, 5761 "undefined access to interrupt mask set" 5762 " when MSI-X is enabled"); 5763 /* should be ignored, fall through for now */ 5764 } 5765 intms |= data; 5766 stl_le_p(&n->bar.intms, intms); 5767 n->bar.intmc = n->bar.intms; 5768 trace_pci_nvme_mmio_intm_set(data & 0xffffffff, intms); 5769 nvme_irq_check(n); 5770 break; 5771 case NVME_REG_INTMC: 5772 if (unlikely(msix_enabled(&(n->parent_obj)))) { 5773 NVME_GUEST_ERR(pci_nvme_ub_mmiowr_intmask_with_msix, 5774 "undefined access to interrupt mask clr" 5775 " when MSI-X is enabled"); 5776 /* should be ignored, fall through for now */ 5777 } 5778 intms &= ~data; 5779 stl_le_p(&n->bar.intms, intms); 5780 n->bar.intmc = n->bar.intms; 5781 trace_pci_nvme_mmio_intm_clr(data & 0xffffffff, intms); 5782 nvme_irq_check(n); 5783 break; 5784 case NVME_REG_CC: 5785 trace_pci_nvme_mmio_cfg(data & 0xffffffff); 5786 5787 /* Windows first sends data, then sends enable bit */ 5788 if (!NVME_CC_EN(data) && !NVME_CC_EN(cc) && 5789 !NVME_CC_SHN(data) && !NVME_CC_SHN(cc)) 5790 { 5791 cc = data; 5792 } 5793 5794 if (NVME_CC_EN(data) && !NVME_CC_EN(cc)) { 5795 cc = data; 5796 5797 /* flush CC since nvme_start_ctrl() needs the value */ 5798 stl_le_p(&n->bar.cc, cc); 5799 if (unlikely(nvme_start_ctrl(n))) { 5800 trace_pci_nvme_err_startfail(); 5801 csts = NVME_CSTS_FAILED; 5802 } else { 5803 trace_pci_nvme_mmio_start_success(); 5804 csts = NVME_CSTS_READY; 5805 } 5806 } else if (!NVME_CC_EN(data) && NVME_CC_EN(cc)) { 5807 trace_pci_nvme_mmio_stopped(); 5808 nvme_ctrl_reset(n); 5809 cc = 0; 5810 csts &= ~NVME_CSTS_READY; 5811 } 5812 5813 if (NVME_CC_SHN(data) && !(NVME_CC_SHN(cc))) { 5814 trace_pci_nvme_mmio_shutdown_set(); 5815 nvme_ctrl_shutdown(n); 5816 cc = data; 5817 csts |= NVME_CSTS_SHST_COMPLETE; 5818 } else if (!NVME_CC_SHN(data) && NVME_CC_SHN(cc)) { 5819 trace_pci_nvme_mmio_shutdown_cleared(); 5820 csts &= ~NVME_CSTS_SHST_COMPLETE; 5821 cc = data; 5822 } 5823 5824 stl_le_p(&n->bar.cc, cc); 5825 stl_le_p(&n->bar.csts, csts); 5826 5827 break; 5828 case NVME_REG_CSTS: 5829 if (data & (1 << 4)) { 5830 NVME_GUEST_ERR(pci_nvme_ub_mmiowr_ssreset_w1c_unsupported, 5831 "attempted to W1C CSTS.NSSRO" 5832 " but CAP.NSSRS is zero (not supported)"); 5833 } else if (data != 0) { 5834 NVME_GUEST_ERR(pci_nvme_ub_mmiowr_ro_csts, 5835 "attempted to set a read only bit" 5836 " of controller status"); 5837 } 5838 break; 5839 case NVME_REG_NSSR: 5840 if (data == 0x4e564d65) { 5841 trace_pci_nvme_ub_mmiowr_ssreset_unsupported(); 5842 } else { 5843 /* The spec says that writes of other values have no effect */ 5844 return; 5845 } 5846 break; 5847 case NVME_REG_AQA: 5848 stl_le_p(&n->bar.aqa, data); 5849 trace_pci_nvme_mmio_aqattr(data & 0xffffffff); 5850 break; 5851 case NVME_REG_ASQ: 5852 stn_le_p(&n->bar.asq, size, data); 5853 trace_pci_nvme_mmio_asqaddr(data); 5854 break; 5855 case NVME_REG_ASQ + 4: 5856 stl_le_p((uint8_t *)&n->bar.asq + 4, data); 5857 trace_pci_nvme_mmio_asqaddr_hi(data, ldq_le_p(&n->bar.asq)); 5858 break; 5859 case NVME_REG_ACQ: 5860 trace_pci_nvme_mmio_acqaddr(data); 5861 stn_le_p(&n->bar.acq, size, data); 5862 break; 5863 case NVME_REG_ACQ + 4: 5864 stl_le_p((uint8_t *)&n->bar.acq + 4, data); 5865 trace_pci_nvme_mmio_acqaddr_hi(data, ldq_le_p(&n->bar.acq)); 5866 break; 5867 case NVME_REG_CMBLOC: 5868 NVME_GUEST_ERR(pci_nvme_ub_mmiowr_cmbloc_reserved, 5869 "invalid write to reserved CMBLOC" 5870 " when CMBSZ is zero, ignored"); 5871 return; 5872 case NVME_REG_CMBSZ: 5873 NVME_GUEST_ERR(pci_nvme_ub_mmiowr_cmbsz_readonly, 5874 "invalid write to read only CMBSZ, ignored"); 5875 return; 5876 case NVME_REG_CMBMSC: 5877 if (!NVME_CAP_CMBS(cap)) { 5878 return; 5879 } 5880 5881 stn_le_p(&n->bar.cmbmsc, size, data); 5882 n->cmb.cmse = false; 5883 5884 if (NVME_CMBMSC_CRE(data)) { 5885 nvme_cmb_enable_regs(n); 5886 5887 if (NVME_CMBMSC_CMSE(data)) { 5888 uint64_t cmbmsc = ldq_le_p(&n->bar.cmbmsc); 5889 hwaddr cba = NVME_CMBMSC_CBA(cmbmsc) << CMBMSC_CBA_SHIFT; 5890 if (cba + int128_get64(n->cmb.mem.size) < cba) { 5891 uint32_t cmbsts = ldl_le_p(&n->bar.cmbsts); 5892 NVME_CMBSTS_SET_CBAI(cmbsts, 1); 5893 stl_le_p(&n->bar.cmbsts, cmbsts); 5894 return; 5895 } 5896 5897 n->cmb.cba = cba; 5898 n->cmb.cmse = true; 5899 } 5900 } else { 5901 n->bar.cmbsz = 0; 5902 n->bar.cmbloc = 0; 5903 } 5904 5905 return; 5906 case NVME_REG_CMBMSC + 4: 5907 stl_le_p((uint8_t *)&n->bar.cmbmsc + 4, data); 5908 return; 5909 5910 case NVME_REG_PMRCAP: 5911 NVME_GUEST_ERR(pci_nvme_ub_mmiowr_pmrcap_readonly, 5912 "invalid write to PMRCAP register, ignored"); 5913 return; 5914 case NVME_REG_PMRCTL: 5915 if (!NVME_CAP_PMRS(cap)) { 5916 return; 5917 } 5918 5919 stl_le_p(&n->bar.pmrctl, data); 5920 if (NVME_PMRCTL_EN(data)) { 5921 memory_region_set_enabled(&n->pmr.dev->mr, true); 5922 pmrsts = 0; 5923 } else { 5924 memory_region_set_enabled(&n->pmr.dev->mr, false); 5925 NVME_PMRSTS_SET_NRDY(pmrsts, 1); 5926 n->pmr.cmse = false; 5927 } 5928 stl_le_p(&n->bar.pmrsts, pmrsts); 5929 return; 5930 case NVME_REG_PMRSTS: 5931 NVME_GUEST_ERR(pci_nvme_ub_mmiowr_pmrsts_readonly, 5932 "invalid write to PMRSTS register, ignored"); 5933 return; 5934 case NVME_REG_PMREBS: 5935 NVME_GUEST_ERR(pci_nvme_ub_mmiowr_pmrebs_readonly, 5936 "invalid write to PMREBS register, ignored"); 5937 return; 5938 case NVME_REG_PMRSWTP: 5939 NVME_GUEST_ERR(pci_nvme_ub_mmiowr_pmrswtp_readonly, 5940 "invalid write to PMRSWTP register, ignored"); 5941 return; 5942 case NVME_REG_PMRMSCL: 5943 if (!NVME_CAP_PMRS(cap)) { 5944 return; 5945 } 5946 5947 stl_le_p(&n->bar.pmrmscl, data); 5948 n->pmr.cmse = false; 5949 5950 if (NVME_PMRMSCL_CMSE(data)) { 5951 uint64_t pmrmscu = ldl_le_p(&n->bar.pmrmscu); 5952 hwaddr cba = pmrmscu << 32 | 5953 (NVME_PMRMSCL_CBA(data) << PMRMSCL_CBA_SHIFT); 5954 if (cba + int128_get64(n->pmr.dev->mr.size) < cba) { 5955 NVME_PMRSTS_SET_CBAI(pmrsts, 1); 5956 stl_le_p(&n->bar.pmrsts, pmrsts); 5957 return; 5958 } 5959 5960 n->pmr.cmse = true; 5961 n->pmr.cba = cba; 5962 } 5963 5964 return; 5965 case NVME_REG_PMRMSCU: 5966 if (!NVME_CAP_PMRS(cap)) { 5967 return; 5968 } 5969 5970 stl_le_p(&n->bar.pmrmscu, data); 5971 return; 5972 default: 5973 NVME_GUEST_ERR(pci_nvme_ub_mmiowr_invalid, 5974 "invalid MMIO write," 5975 " offset=0x%"PRIx64", data=%"PRIx64"", 5976 offset, data); 5977 break; 5978 } 5979 } 5980 5981 static uint64_t nvme_mmio_read(void *opaque, hwaddr addr, unsigned size) 5982 { 5983 NvmeCtrl *n = (NvmeCtrl *)opaque; 5984 uint8_t *ptr = (uint8_t *)&n->bar; 5985 5986 trace_pci_nvme_mmio_read(addr, size); 5987 5988 if (unlikely(addr & (sizeof(uint32_t) - 1))) { 5989 NVME_GUEST_ERR(pci_nvme_ub_mmiord_misaligned32, 5990 "MMIO read not 32-bit aligned," 5991 " offset=0x%"PRIx64"", addr); 5992 /* should RAZ, fall through for now */ 5993 } else if (unlikely(size < sizeof(uint32_t))) { 5994 NVME_GUEST_ERR(pci_nvme_ub_mmiord_toosmall, 5995 "MMIO read smaller than 32-bits," 5996 " offset=0x%"PRIx64"", addr); 5997 /* should RAZ, fall through for now */ 5998 } 5999 6000 if (addr > sizeof(n->bar) - size) { 6001 NVME_GUEST_ERR(pci_nvme_ub_mmiord_invalid_ofs, 6002 "MMIO read beyond last register," 6003 " offset=0x%"PRIx64", returning 0", addr); 6004 6005 return 0; 6006 } 6007 6008 /* 6009 * When PMRWBM bit 1 is set then read from 6010 * from PMRSTS should ensure prior writes 6011 * made it to persistent media 6012 */ 6013 if (addr == NVME_REG_PMRSTS && 6014 (NVME_PMRCAP_PMRWBM(ldl_le_p(&n->bar.pmrcap)) & 0x02)) { 6015 memory_region_msync(&n->pmr.dev->mr, 0, n->pmr.dev->size); 6016 } 6017 6018 return ldn_le_p(ptr + addr, size); 6019 } 6020 6021 static void nvme_process_db(NvmeCtrl *n, hwaddr addr, int val) 6022 { 6023 uint32_t qid; 6024 6025 if (unlikely(addr & ((1 << 2) - 1))) { 6026 NVME_GUEST_ERR(pci_nvme_ub_db_wr_misaligned, 6027 "doorbell write not 32-bit aligned," 6028 " offset=0x%"PRIx64", ignoring", addr); 6029 return; 6030 } 6031 6032 if (((addr - 0x1000) >> 2) & 1) { 6033 /* Completion queue doorbell write */ 6034 6035 uint16_t new_head = val & 0xffff; 6036 int start_sqs; 6037 NvmeCQueue *cq; 6038 6039 qid = (addr - (0x1000 + (1 << 2))) >> 3; 6040 if (unlikely(nvme_check_cqid(n, qid))) { 6041 NVME_GUEST_ERR(pci_nvme_ub_db_wr_invalid_cq, 6042 "completion queue doorbell write" 6043 " for nonexistent queue," 6044 " sqid=%"PRIu32", ignoring", qid); 6045 6046 /* 6047 * NVM Express v1.3d, Section 4.1 state: "If host software writes 6048 * an invalid value to the Submission Queue Tail Doorbell or 6049 * Completion Queue Head Doorbell regiter and an Asynchronous Event 6050 * Request command is outstanding, then an asynchronous event is 6051 * posted to the Admin Completion Queue with a status code of 6052 * Invalid Doorbell Write Value." 6053 * 6054 * Also note that the spec includes the "Invalid Doorbell Register" 6055 * status code, but nowhere does it specify when to use it. 6056 * However, it seems reasonable to use it here in a similar 6057 * fashion. 6058 */ 6059 if (n->outstanding_aers) { 6060 nvme_enqueue_event(n, NVME_AER_TYPE_ERROR, 6061 NVME_AER_INFO_ERR_INVALID_DB_REGISTER, 6062 NVME_LOG_ERROR_INFO); 6063 } 6064 6065 return; 6066 } 6067 6068 cq = n->cq[qid]; 6069 if (unlikely(new_head >= cq->size)) { 6070 NVME_GUEST_ERR(pci_nvme_ub_db_wr_invalid_cqhead, 6071 "completion queue doorbell write value" 6072 " beyond queue size, sqid=%"PRIu32"," 6073 " new_head=%"PRIu16", ignoring", 6074 qid, new_head); 6075 6076 if (n->outstanding_aers) { 6077 nvme_enqueue_event(n, NVME_AER_TYPE_ERROR, 6078 NVME_AER_INFO_ERR_INVALID_DB_VALUE, 6079 NVME_LOG_ERROR_INFO); 6080 } 6081 6082 return; 6083 } 6084 6085 trace_pci_nvme_mmio_doorbell_cq(cq->cqid, new_head); 6086 6087 start_sqs = nvme_cq_full(cq) ? 1 : 0; 6088 cq->head = new_head; 6089 if (start_sqs) { 6090 NvmeSQueue *sq; 6091 QTAILQ_FOREACH(sq, &cq->sq_list, entry) { 6092 timer_mod(sq->timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 500); 6093 } 6094 timer_mod(cq->timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 500); 6095 } 6096 6097 if (cq->tail == cq->head) { 6098 if (cq->irq_enabled) { 6099 n->cq_pending--; 6100 } 6101 6102 nvme_irq_deassert(n, cq); 6103 } 6104 } else { 6105 /* Submission queue doorbell write */ 6106 6107 uint16_t new_tail = val & 0xffff; 6108 NvmeSQueue *sq; 6109 6110 qid = (addr - 0x1000) >> 3; 6111 if (unlikely(nvme_check_sqid(n, qid))) { 6112 NVME_GUEST_ERR(pci_nvme_ub_db_wr_invalid_sq, 6113 "submission queue doorbell write" 6114 " for nonexistent queue," 6115 " sqid=%"PRIu32", ignoring", qid); 6116 6117 if (n->outstanding_aers) { 6118 nvme_enqueue_event(n, NVME_AER_TYPE_ERROR, 6119 NVME_AER_INFO_ERR_INVALID_DB_REGISTER, 6120 NVME_LOG_ERROR_INFO); 6121 } 6122 6123 return; 6124 } 6125 6126 sq = n->sq[qid]; 6127 if (unlikely(new_tail >= sq->size)) { 6128 NVME_GUEST_ERR(pci_nvme_ub_db_wr_invalid_sqtail, 6129 "submission queue doorbell write value" 6130 " beyond queue size, sqid=%"PRIu32"," 6131 " new_tail=%"PRIu16", ignoring", 6132 qid, new_tail); 6133 6134 if (n->outstanding_aers) { 6135 nvme_enqueue_event(n, NVME_AER_TYPE_ERROR, 6136 NVME_AER_INFO_ERR_INVALID_DB_VALUE, 6137 NVME_LOG_ERROR_INFO); 6138 } 6139 6140 return; 6141 } 6142 6143 trace_pci_nvme_mmio_doorbell_sq(sq->sqid, new_tail); 6144 6145 sq->tail = new_tail; 6146 timer_mod(sq->timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 500); 6147 } 6148 } 6149 6150 static void nvme_mmio_write(void *opaque, hwaddr addr, uint64_t data, 6151 unsigned size) 6152 { 6153 NvmeCtrl *n = (NvmeCtrl *)opaque; 6154 6155 trace_pci_nvme_mmio_write(addr, data, size); 6156 6157 if (addr < sizeof(n->bar)) { 6158 nvme_write_bar(n, addr, data, size); 6159 } else { 6160 nvme_process_db(n, addr, data); 6161 } 6162 } 6163 6164 static const MemoryRegionOps nvme_mmio_ops = { 6165 .read = nvme_mmio_read, 6166 .write = nvme_mmio_write, 6167 .endianness = DEVICE_LITTLE_ENDIAN, 6168 .impl = { 6169 .min_access_size = 2, 6170 .max_access_size = 8, 6171 }, 6172 }; 6173 6174 static void nvme_cmb_write(void *opaque, hwaddr addr, uint64_t data, 6175 unsigned size) 6176 { 6177 NvmeCtrl *n = (NvmeCtrl *)opaque; 6178 stn_le_p(&n->cmb.buf[addr], size, data); 6179 } 6180 6181 static uint64_t nvme_cmb_read(void *opaque, hwaddr addr, unsigned size) 6182 { 6183 NvmeCtrl *n = (NvmeCtrl *)opaque; 6184 return ldn_le_p(&n->cmb.buf[addr], size); 6185 } 6186 6187 static const MemoryRegionOps nvme_cmb_ops = { 6188 .read = nvme_cmb_read, 6189 .write = nvme_cmb_write, 6190 .endianness = DEVICE_LITTLE_ENDIAN, 6191 .impl = { 6192 .min_access_size = 1, 6193 .max_access_size = 8, 6194 }, 6195 }; 6196 6197 static void nvme_check_constraints(NvmeCtrl *n, Error **errp) 6198 { 6199 NvmeParams *params = &n->params; 6200 6201 if (params->num_queues) { 6202 warn_report("num_queues is deprecated; please use max_ioqpairs " 6203 "instead"); 6204 6205 params->max_ioqpairs = params->num_queues - 1; 6206 } 6207 6208 if (n->namespace.blkconf.blk && n->subsys) { 6209 error_setg(errp, "subsystem support is unavailable with legacy " 6210 "namespace ('drive' property)"); 6211 return; 6212 } 6213 6214 if (params->max_ioqpairs < 1 || 6215 params->max_ioqpairs > NVME_MAX_IOQPAIRS) { 6216 error_setg(errp, "max_ioqpairs must be between 1 and %d", 6217 NVME_MAX_IOQPAIRS); 6218 return; 6219 } 6220 6221 if (params->msix_qsize < 1 || 6222 params->msix_qsize > PCI_MSIX_FLAGS_QSIZE + 1) { 6223 error_setg(errp, "msix_qsize must be between 1 and %d", 6224 PCI_MSIX_FLAGS_QSIZE + 1); 6225 return; 6226 } 6227 6228 if (!params->serial) { 6229 error_setg(errp, "serial property not set"); 6230 return; 6231 } 6232 6233 if (n->pmr.dev) { 6234 if (host_memory_backend_is_mapped(n->pmr.dev)) { 6235 error_setg(errp, "can't use already busy memdev: %s", 6236 object_get_canonical_path_component(OBJECT(n->pmr.dev))); 6237 return; 6238 } 6239 6240 if (!is_power_of_2(n->pmr.dev->size)) { 6241 error_setg(errp, "pmr backend size needs to be power of 2 in size"); 6242 return; 6243 } 6244 6245 host_memory_backend_set_mapped(n->pmr.dev, true); 6246 } 6247 6248 if (n->params.zasl > n->params.mdts) { 6249 error_setg(errp, "zoned.zasl (Zone Append Size Limit) must be less " 6250 "than or equal to mdts (Maximum Data Transfer Size)"); 6251 return; 6252 } 6253 6254 if (!n->params.vsl) { 6255 error_setg(errp, "vsl must be non-zero"); 6256 return; 6257 } 6258 } 6259 6260 static void nvme_init_state(NvmeCtrl *n) 6261 { 6262 /* add one to max_ioqpairs to account for the admin queue pair */ 6263 n->reg_size = pow2ceil(sizeof(NvmeBar) + 6264 2 * (n->params.max_ioqpairs + 1) * NVME_DB_SIZE); 6265 n->sq = g_new0(NvmeSQueue *, n->params.max_ioqpairs + 1); 6266 n->cq = g_new0(NvmeCQueue *, n->params.max_ioqpairs + 1); 6267 n->temperature = NVME_TEMPERATURE; 6268 n->features.temp_thresh_hi = NVME_TEMPERATURE_WARNING; 6269 n->starttime_ms = qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL); 6270 n->aer_reqs = g_new0(NvmeRequest *, n->params.aerl + 1); 6271 } 6272 6273 static void nvme_init_cmb(NvmeCtrl *n, PCIDevice *pci_dev) 6274 { 6275 uint64_t cmb_size = n->params.cmb_size_mb * MiB; 6276 uint64_t cap = ldq_le_p(&n->bar.cap); 6277 6278 n->cmb.buf = g_malloc0(cmb_size); 6279 memory_region_init_io(&n->cmb.mem, OBJECT(n), &nvme_cmb_ops, n, 6280 "nvme-cmb", cmb_size); 6281 pci_register_bar(pci_dev, NVME_CMB_BIR, 6282 PCI_BASE_ADDRESS_SPACE_MEMORY | 6283 PCI_BASE_ADDRESS_MEM_TYPE_64 | 6284 PCI_BASE_ADDRESS_MEM_PREFETCH, &n->cmb.mem); 6285 6286 NVME_CAP_SET_CMBS(cap, 1); 6287 stq_le_p(&n->bar.cap, cap); 6288 6289 if (n->params.legacy_cmb) { 6290 nvme_cmb_enable_regs(n); 6291 n->cmb.cmse = true; 6292 } 6293 } 6294 6295 static void nvme_init_pmr(NvmeCtrl *n, PCIDevice *pci_dev) 6296 { 6297 uint32_t pmrcap = ldl_le_p(&n->bar.pmrcap); 6298 6299 NVME_PMRCAP_SET_RDS(pmrcap, 1); 6300 NVME_PMRCAP_SET_WDS(pmrcap, 1); 6301 NVME_PMRCAP_SET_BIR(pmrcap, NVME_PMR_BIR); 6302 /* Turn on bit 1 support */ 6303 NVME_PMRCAP_SET_PMRWBM(pmrcap, 0x02); 6304 NVME_PMRCAP_SET_CMSS(pmrcap, 1); 6305 stl_le_p(&n->bar.pmrcap, pmrcap); 6306 6307 pci_register_bar(pci_dev, NVME_PMR_BIR, 6308 PCI_BASE_ADDRESS_SPACE_MEMORY | 6309 PCI_BASE_ADDRESS_MEM_TYPE_64 | 6310 PCI_BASE_ADDRESS_MEM_PREFETCH, &n->pmr.dev->mr); 6311 6312 memory_region_set_enabled(&n->pmr.dev->mr, false); 6313 } 6314 6315 static int nvme_init_pci(NvmeCtrl *n, PCIDevice *pci_dev, Error **errp) 6316 { 6317 uint8_t *pci_conf = pci_dev->config; 6318 uint64_t bar_size, msix_table_size, msix_pba_size; 6319 unsigned msix_table_offset, msix_pba_offset; 6320 int ret; 6321 6322 Error *err = NULL; 6323 6324 pci_conf[PCI_INTERRUPT_PIN] = 1; 6325 pci_config_set_prog_interface(pci_conf, 0x2); 6326 6327 if (n->params.use_intel_id) { 6328 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL); 6329 pci_config_set_device_id(pci_conf, 0x5845); 6330 } else { 6331 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_REDHAT); 6332 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_REDHAT_NVME); 6333 } 6334 6335 pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_EXPRESS); 6336 pcie_endpoint_cap_init(pci_dev, 0x80); 6337 6338 bar_size = QEMU_ALIGN_UP(n->reg_size, 4 * KiB); 6339 msix_table_offset = bar_size; 6340 msix_table_size = PCI_MSIX_ENTRY_SIZE * n->params.msix_qsize; 6341 6342 bar_size += msix_table_size; 6343 bar_size = QEMU_ALIGN_UP(bar_size, 4 * KiB); 6344 msix_pba_offset = bar_size; 6345 msix_pba_size = QEMU_ALIGN_UP(n->params.msix_qsize, 64) / 8; 6346 6347 bar_size += msix_pba_size; 6348 bar_size = pow2ceil(bar_size); 6349 6350 memory_region_init(&n->bar0, OBJECT(n), "nvme-bar0", bar_size); 6351 memory_region_init_io(&n->iomem, OBJECT(n), &nvme_mmio_ops, n, "nvme", 6352 n->reg_size); 6353 memory_region_add_subregion(&n->bar0, 0, &n->iomem); 6354 6355 pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY | 6356 PCI_BASE_ADDRESS_MEM_TYPE_64, &n->bar0); 6357 ret = msix_init(pci_dev, n->params.msix_qsize, 6358 &n->bar0, 0, msix_table_offset, 6359 &n->bar0, 0, msix_pba_offset, 0, &err); 6360 if (ret < 0) { 6361 if (ret == -ENOTSUP) { 6362 warn_report_err(err); 6363 } else { 6364 error_propagate(errp, err); 6365 return ret; 6366 } 6367 } 6368 6369 if (n->params.cmb_size_mb) { 6370 nvme_init_cmb(n, pci_dev); 6371 } 6372 6373 if (n->pmr.dev) { 6374 nvme_init_pmr(n, pci_dev); 6375 } 6376 6377 return 0; 6378 } 6379 6380 static void nvme_init_subnqn(NvmeCtrl *n) 6381 { 6382 NvmeSubsystem *subsys = n->subsys; 6383 NvmeIdCtrl *id = &n->id_ctrl; 6384 6385 if (!subsys) { 6386 snprintf((char *)id->subnqn, sizeof(id->subnqn), 6387 "nqn.2019-08.org.qemu:%s", n->params.serial); 6388 } else { 6389 pstrcpy((char *)id->subnqn, sizeof(id->subnqn), (char*)subsys->subnqn); 6390 } 6391 } 6392 6393 static void nvme_init_ctrl(NvmeCtrl *n, PCIDevice *pci_dev) 6394 { 6395 NvmeIdCtrl *id = &n->id_ctrl; 6396 uint8_t *pci_conf = pci_dev->config; 6397 uint64_t cap = ldq_le_p(&n->bar.cap); 6398 6399 id->vid = cpu_to_le16(pci_get_word(pci_conf + PCI_VENDOR_ID)); 6400 id->ssvid = cpu_to_le16(pci_get_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID)); 6401 strpadcpy((char *)id->mn, sizeof(id->mn), "QEMU NVMe Ctrl", ' '); 6402 strpadcpy((char *)id->fr, sizeof(id->fr), "1.0", ' '); 6403 strpadcpy((char *)id->sn, sizeof(id->sn), n->params.serial, ' '); 6404 6405 id->cntlid = cpu_to_le16(n->cntlid); 6406 6407 id->oaes = cpu_to_le32(NVME_OAES_NS_ATTR); 6408 6409 id->rab = 6; 6410 6411 if (n->params.use_intel_id) { 6412 id->ieee[0] = 0xb3; 6413 id->ieee[1] = 0x02; 6414 id->ieee[2] = 0x00; 6415 } else { 6416 id->ieee[0] = 0x00; 6417 id->ieee[1] = 0x54; 6418 id->ieee[2] = 0x52; 6419 } 6420 6421 id->mdts = n->params.mdts; 6422 id->ver = cpu_to_le32(NVME_SPEC_VER); 6423 id->oacs = cpu_to_le16(NVME_OACS_NS_MGMT | NVME_OACS_FORMAT); 6424 id->cntrltype = 0x1; 6425 6426 /* 6427 * Because the controller always completes the Abort command immediately, 6428 * there can never be more than one concurrently executing Abort command, 6429 * so this value is never used for anything. Note that there can easily be 6430 * many Abort commands in the queues, but they are not considered 6431 * "executing" until processed by nvme_abort. 6432 * 6433 * The specification recommends a value of 3 for Abort Command Limit (four 6434 * concurrently outstanding Abort commands), so lets use that though it is 6435 * inconsequential. 6436 */ 6437 id->acl = 3; 6438 id->aerl = n->params.aerl; 6439 id->frmw = (NVME_NUM_FW_SLOTS << 1) | NVME_FRMW_SLOT1_RO; 6440 id->lpa = NVME_LPA_NS_SMART | NVME_LPA_CSE | NVME_LPA_EXTENDED; 6441 6442 /* recommended default value (~70 C) */ 6443 id->wctemp = cpu_to_le16(NVME_TEMPERATURE_WARNING); 6444 id->cctemp = cpu_to_le16(NVME_TEMPERATURE_CRITICAL); 6445 6446 id->sqes = (0x6 << 4) | 0x6; 6447 id->cqes = (0x4 << 4) | 0x4; 6448 id->nn = cpu_to_le32(NVME_MAX_NAMESPACES); 6449 id->oncs = cpu_to_le16(NVME_ONCS_WRITE_ZEROES | NVME_ONCS_TIMESTAMP | 6450 NVME_ONCS_FEATURES | NVME_ONCS_DSM | 6451 NVME_ONCS_COMPARE | NVME_ONCS_COPY); 6452 6453 /* 6454 * NOTE: If this device ever supports a command set that does NOT use 0x0 6455 * as a Flush-equivalent operation, support for the broadcast NSID in Flush 6456 * should probably be removed. 6457 * 6458 * See comment in nvme_io_cmd. 6459 */ 6460 id->vwc = NVME_VWC_NSID_BROADCAST_SUPPORT | NVME_VWC_PRESENT; 6461 6462 id->ocfs = cpu_to_le16(NVME_OCFS_COPY_FORMAT_0); 6463 id->sgls = cpu_to_le32(NVME_CTRL_SGLS_SUPPORT_NO_ALIGN | 6464 NVME_CTRL_SGLS_BITBUCKET); 6465 6466 nvme_init_subnqn(n); 6467 6468 id->psd[0].mp = cpu_to_le16(0x9c4); 6469 id->psd[0].enlat = cpu_to_le32(0x10); 6470 id->psd[0].exlat = cpu_to_le32(0x4); 6471 6472 if (n->subsys) { 6473 id->cmic |= NVME_CMIC_MULTI_CTRL; 6474 } 6475 6476 NVME_CAP_SET_MQES(cap, 0x7ff); 6477 NVME_CAP_SET_CQR(cap, 1); 6478 NVME_CAP_SET_TO(cap, 0xf); 6479 NVME_CAP_SET_CSS(cap, NVME_CAP_CSS_NVM); 6480 NVME_CAP_SET_CSS(cap, NVME_CAP_CSS_CSI_SUPP); 6481 NVME_CAP_SET_CSS(cap, NVME_CAP_CSS_ADMIN_ONLY); 6482 NVME_CAP_SET_MPSMAX(cap, 4); 6483 NVME_CAP_SET_CMBS(cap, n->params.cmb_size_mb ? 1 : 0); 6484 NVME_CAP_SET_PMRS(cap, n->pmr.dev ? 1 : 0); 6485 stq_le_p(&n->bar.cap, cap); 6486 6487 stl_le_p(&n->bar.vs, NVME_SPEC_VER); 6488 n->bar.intmc = n->bar.intms = 0; 6489 } 6490 6491 static int nvme_init_subsys(NvmeCtrl *n, Error **errp) 6492 { 6493 int cntlid; 6494 6495 if (!n->subsys) { 6496 return 0; 6497 } 6498 6499 cntlid = nvme_subsys_register_ctrl(n, errp); 6500 if (cntlid < 0) { 6501 return -1; 6502 } 6503 6504 n->cntlid = cntlid; 6505 6506 return 0; 6507 } 6508 6509 void nvme_attach_ns(NvmeCtrl *n, NvmeNamespace *ns) 6510 { 6511 uint32_t nsid = ns->params.nsid; 6512 assert(nsid && nsid <= NVME_MAX_NAMESPACES); 6513 6514 n->namespaces[nsid] = ns; 6515 ns->attached++; 6516 6517 n->dmrsl = MIN_NON_ZERO(n->dmrsl, 6518 BDRV_REQUEST_MAX_BYTES / nvme_l2b(ns, 1)); 6519 } 6520 6521 static void nvme_realize(PCIDevice *pci_dev, Error **errp) 6522 { 6523 NvmeCtrl *n = NVME(pci_dev); 6524 NvmeNamespace *ns; 6525 Error *local_err = NULL; 6526 6527 nvme_check_constraints(n, &local_err); 6528 if (local_err) { 6529 error_propagate(errp, local_err); 6530 return; 6531 } 6532 6533 qbus_create_inplace(&n->bus, sizeof(NvmeBus), TYPE_NVME_BUS, 6534 &pci_dev->qdev, n->parent_obj.qdev.id); 6535 6536 nvme_init_state(n); 6537 if (nvme_init_pci(n, pci_dev, errp)) { 6538 return; 6539 } 6540 6541 if (nvme_init_subsys(n, errp)) { 6542 error_propagate(errp, local_err); 6543 return; 6544 } 6545 nvme_init_ctrl(n, pci_dev); 6546 6547 /* setup a namespace if the controller drive property was given */ 6548 if (n->namespace.blkconf.blk) { 6549 ns = &n->namespace; 6550 ns->params.nsid = 1; 6551 6552 if (nvme_ns_setup(ns, errp)) { 6553 return; 6554 } 6555 6556 nvme_attach_ns(n, ns); 6557 } 6558 } 6559 6560 static void nvme_exit(PCIDevice *pci_dev) 6561 { 6562 NvmeCtrl *n = NVME(pci_dev); 6563 NvmeNamespace *ns; 6564 int i; 6565 6566 nvme_ctrl_reset(n); 6567 6568 if (n->subsys) { 6569 for (i = 1; i <= NVME_MAX_NAMESPACES; i++) { 6570 ns = nvme_ns(n, i); 6571 if (ns) { 6572 ns->attached--; 6573 } 6574 } 6575 6576 nvme_subsys_unregister_ctrl(n->subsys, n); 6577 } 6578 6579 g_free(n->cq); 6580 g_free(n->sq); 6581 g_free(n->aer_reqs); 6582 6583 if (n->params.cmb_size_mb) { 6584 g_free(n->cmb.buf); 6585 } 6586 6587 if (n->pmr.dev) { 6588 host_memory_backend_set_mapped(n->pmr.dev, false); 6589 } 6590 msix_uninit(pci_dev, &n->bar0, &n->bar0); 6591 memory_region_del_subregion(&n->bar0, &n->iomem); 6592 } 6593 6594 static Property nvme_props[] = { 6595 DEFINE_BLOCK_PROPERTIES(NvmeCtrl, namespace.blkconf), 6596 DEFINE_PROP_LINK("pmrdev", NvmeCtrl, pmr.dev, TYPE_MEMORY_BACKEND, 6597 HostMemoryBackend *), 6598 DEFINE_PROP_LINK("subsys", NvmeCtrl, subsys, TYPE_NVME_SUBSYS, 6599 NvmeSubsystem *), 6600 DEFINE_PROP_STRING("serial", NvmeCtrl, params.serial), 6601 DEFINE_PROP_UINT32("cmb_size_mb", NvmeCtrl, params.cmb_size_mb, 0), 6602 DEFINE_PROP_UINT32("num_queues", NvmeCtrl, params.num_queues, 0), 6603 DEFINE_PROP_UINT32("max_ioqpairs", NvmeCtrl, params.max_ioqpairs, 64), 6604 DEFINE_PROP_UINT16("msix_qsize", NvmeCtrl, params.msix_qsize, 65), 6605 DEFINE_PROP_UINT8("aerl", NvmeCtrl, params.aerl, 3), 6606 DEFINE_PROP_UINT32("aer_max_queued", NvmeCtrl, params.aer_max_queued, 64), 6607 DEFINE_PROP_UINT8("mdts", NvmeCtrl, params.mdts, 7), 6608 DEFINE_PROP_UINT8("vsl", NvmeCtrl, params.vsl, 7), 6609 DEFINE_PROP_BOOL("use-intel-id", NvmeCtrl, params.use_intel_id, false), 6610 DEFINE_PROP_BOOL("legacy-cmb", NvmeCtrl, params.legacy_cmb, false), 6611 DEFINE_PROP_UINT8("zoned.zasl", NvmeCtrl, params.zasl, 0), 6612 DEFINE_PROP_BOOL("zoned.auto_transition", NvmeCtrl, 6613 params.auto_transition_zones, true), 6614 DEFINE_PROP_END_OF_LIST(), 6615 }; 6616 6617 static void nvme_get_smart_warning(Object *obj, Visitor *v, const char *name, 6618 void *opaque, Error **errp) 6619 { 6620 NvmeCtrl *n = NVME(obj); 6621 uint8_t value = n->smart_critical_warning; 6622 6623 visit_type_uint8(v, name, &value, errp); 6624 } 6625 6626 static void nvme_set_smart_warning(Object *obj, Visitor *v, const char *name, 6627 void *opaque, Error **errp) 6628 { 6629 NvmeCtrl *n = NVME(obj); 6630 uint8_t value, old_value, cap = 0, index, event; 6631 6632 if (!visit_type_uint8(v, name, &value, errp)) { 6633 return; 6634 } 6635 6636 cap = NVME_SMART_SPARE | NVME_SMART_TEMPERATURE | NVME_SMART_RELIABILITY 6637 | NVME_SMART_MEDIA_READ_ONLY | NVME_SMART_FAILED_VOLATILE_MEDIA; 6638 if (NVME_CAP_PMRS(ldq_le_p(&n->bar.cap))) { 6639 cap |= NVME_SMART_PMR_UNRELIABLE; 6640 } 6641 6642 if ((value & cap) != value) { 6643 error_setg(errp, "unsupported smart critical warning bits: 0x%x", 6644 value & ~cap); 6645 return; 6646 } 6647 6648 old_value = n->smart_critical_warning; 6649 n->smart_critical_warning = value; 6650 6651 /* only inject new bits of smart critical warning */ 6652 for (index = 0; index < NVME_SMART_WARN_MAX; index++) { 6653 event = 1 << index; 6654 if (value & ~old_value & event) 6655 nvme_smart_event(n, event); 6656 } 6657 } 6658 6659 static const VMStateDescription nvme_vmstate = { 6660 .name = "nvme", 6661 .unmigratable = 1, 6662 }; 6663 6664 static void nvme_class_init(ObjectClass *oc, void *data) 6665 { 6666 DeviceClass *dc = DEVICE_CLASS(oc); 6667 PCIDeviceClass *pc = PCI_DEVICE_CLASS(oc); 6668 6669 pc->realize = nvme_realize; 6670 pc->exit = nvme_exit; 6671 pc->class_id = PCI_CLASS_STORAGE_EXPRESS; 6672 pc->revision = 2; 6673 6674 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 6675 dc->desc = "Non-Volatile Memory Express"; 6676 device_class_set_props(dc, nvme_props); 6677 dc->vmsd = &nvme_vmstate; 6678 } 6679 6680 static void nvme_instance_init(Object *obj) 6681 { 6682 NvmeCtrl *n = NVME(obj); 6683 6684 device_add_bootindex_property(obj, &n->namespace.blkconf.bootindex, 6685 "bootindex", "/namespace@1,0", 6686 DEVICE(obj)); 6687 6688 object_property_add(obj, "smart_critical_warning", "uint8", 6689 nvme_get_smart_warning, 6690 nvme_set_smart_warning, NULL, NULL); 6691 } 6692 6693 static const TypeInfo nvme_info = { 6694 .name = TYPE_NVME, 6695 .parent = TYPE_PCI_DEVICE, 6696 .instance_size = sizeof(NvmeCtrl), 6697 .instance_init = nvme_instance_init, 6698 .class_init = nvme_class_init, 6699 .interfaces = (InterfaceInfo[]) { 6700 { INTERFACE_PCIE_DEVICE }, 6701 { } 6702 }, 6703 }; 6704 6705 static const TypeInfo nvme_bus_info = { 6706 .name = TYPE_NVME_BUS, 6707 .parent = TYPE_BUS, 6708 .instance_size = sizeof(NvmeBus), 6709 }; 6710 6711 static void nvme_register_types(void) 6712 { 6713 type_register_static(&nvme_info); 6714 type_register_static(&nvme_bus_info); 6715 } 6716 6717 type_init(nvme_register_types) 6718