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sys/dev/nvme/nvme_qpair.c
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1 /*- 2 * Copyright (C) 2012-2014 Intel Corporation 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/bus.h> 32 33 #include <dev/pci/pcivar.h> 34 35 #include "nvme_private.h" 36 37 typedef enum error_print { ERROR_PRINT_NONE, ERROR_PRINT_NO_RETRY, ERROR_PRINT_ALL } error_print_t; 38 #define DO_NOT_RETRY 1 39 40 static void _nvme_qpair_submit_request(struct nvme_qpair *qpair, 41 struct nvme_request *req); 42 static void nvme_qpair_destroy(struct nvme_qpair *qpair); 43 44 struct nvme_opcode_string { 45 46 uint16_t opc; 47 const char * str; 48 }; 49 50 static struct nvme_opcode_string admin_opcode[] = { 51 { NVME_OPC_DELETE_IO_SQ, "DELETE IO SQ" }, 52 { NVME_OPC_CREATE_IO_SQ, "CREATE IO SQ" }, 53 { NVME_OPC_GET_LOG_PAGE, "GET LOG PAGE" }, 54 { NVME_OPC_DELETE_IO_CQ, "DELETE IO CQ" }, 55 { NVME_OPC_CREATE_IO_CQ, "CREATE IO CQ" }, 56 { NVME_OPC_IDENTIFY, "IDENTIFY" }, 57 { NVME_OPC_ABORT, "ABORT" }, 58 { NVME_OPC_SET_FEATURES, "SET FEATURES" }, 59 { NVME_OPC_GET_FEATURES, "GET FEATURES" }, 60 { NVME_OPC_ASYNC_EVENT_REQUEST, "ASYNC EVENT REQUEST" }, 61 { NVME_OPC_FIRMWARE_ACTIVATE, "FIRMWARE ACTIVATE" }, 62 { NVME_OPC_FIRMWARE_IMAGE_DOWNLOAD, "FIRMWARE IMAGE DOWNLOAD" }, 63 { NVME_OPC_DEVICE_SELF_TEST, "DEVICE SELF-TEST" }, 64 { NVME_OPC_NAMESPACE_ATTACHMENT, "NAMESPACE ATTACHMENT" }, 65 { NVME_OPC_KEEP_ALIVE, "KEEP ALIVE" }, 66 { NVME_OPC_DIRECTIVE_SEND, "DIRECTIVE SEND" }, 67 { NVME_OPC_DIRECTIVE_RECEIVE, "DIRECTIVE RECEIVE" }, 68 { NVME_OPC_VIRTUALIZATION_MANAGEMENT, "VIRTUALIZATION MANAGEMENT" }, 69 { NVME_OPC_NVME_MI_SEND, "NVME-MI SEND" }, 70 { NVME_OPC_NVME_MI_RECEIVE, "NVME-MI RECEIVE" }, 71 { NVME_OPC_DOORBELL_BUFFER_CONFIG, "DOORBELL BUFFER CONFIG" }, 72 { NVME_OPC_FORMAT_NVM, "FORMAT NVM" }, 73 { NVME_OPC_SECURITY_SEND, "SECURITY SEND" }, 74 { NVME_OPC_SECURITY_RECEIVE, "SECURITY RECEIVE" }, 75 { NVME_OPC_SANITIZE, "SANITIZE" }, 76 { 0xFFFF, "ADMIN COMMAND" } 77 }; 78 79 static struct nvme_opcode_string io_opcode[] = { 80 { NVME_OPC_FLUSH, "FLUSH" }, 81 { NVME_OPC_WRITE, "WRITE" }, 82 { NVME_OPC_READ, "READ" }, 83 { NVME_OPC_WRITE_UNCORRECTABLE, "WRITE UNCORRECTABLE" }, 84 { NVME_OPC_COMPARE, "COMPARE" }, 85 { NVME_OPC_WRITE_ZEROES, "WRITE ZEROES" }, 86 { NVME_OPC_DATASET_MANAGEMENT, "DATASET MANAGEMENT" }, 87 { NVME_OPC_RESERVATION_REGISTER, "RESERVATION REGISTER" }, 88 { NVME_OPC_RESERVATION_REPORT, "RESERVATION REPORT" }, 89 { NVME_OPC_RESERVATION_ACQUIRE, "RESERVATION ACQUIRE" }, 90 { NVME_OPC_RESERVATION_RELEASE, "RESERVATION RELEASE" }, 91 { 0xFFFF, "IO COMMAND" } 92 }; 93 94 static const char * 95 get_admin_opcode_string(uint16_t opc) 96 { 97 struct nvme_opcode_string *entry; 98 99 entry = admin_opcode; 100 101 while (entry->opc != 0xFFFF) { 102 if (entry->opc == opc) 103 return (entry->str); 104 entry++; 105 } 106 return (entry->str); 107 } 108 109 static const char * 110 get_io_opcode_string(uint16_t opc) 111 { 112 struct nvme_opcode_string *entry; 113 114 entry = io_opcode; 115 116 while (entry->opc != 0xFFFF) { 117 if (entry->opc == opc) 118 return (entry->str); 119 entry++; 120 } 121 return (entry->str); 122 } 123 124 125 static void 126 nvme_admin_qpair_print_command(struct nvme_qpair *qpair, 127 struct nvme_command *cmd) 128 { 129 130 nvme_printf(qpair->ctrlr, "%s (%02x) sqid:%d cid:%d nsid:%x " 131 "cdw10:%08x cdw11:%08x\n", 132 get_admin_opcode_string(cmd->opc), cmd->opc, qpair->id, cmd->cid, 133 cmd->nsid, cmd->cdw10, cmd->cdw11); 134 } 135 136 static void 137 nvme_io_qpair_print_command(struct nvme_qpair *qpair, 138 struct nvme_command *cmd) 139 { 140 141 switch (cmd->opc) { 142 case NVME_OPC_WRITE: 143 case NVME_OPC_READ: 144 case NVME_OPC_WRITE_UNCORRECTABLE: 145 case NVME_OPC_COMPARE: 146 case NVME_OPC_WRITE_ZEROES: 147 nvme_printf(qpair->ctrlr, "%s sqid:%d cid:%d nsid:%d " 148 "lba:%llu len:%d\n", 149 get_io_opcode_string(cmd->opc), qpair->id, cmd->cid, 150 cmd->nsid, 151 ((unsigned long long)cmd->cdw11 << 32) + cmd->cdw10, 152 (cmd->cdw12 & 0xFFFF) + 1); 153 break; 154 case NVME_OPC_FLUSH: 155 case NVME_OPC_DATASET_MANAGEMENT: 156 case NVME_OPC_RESERVATION_REGISTER: 157 case NVME_OPC_RESERVATION_REPORT: 158 case NVME_OPC_RESERVATION_ACQUIRE: 159 case NVME_OPC_RESERVATION_RELEASE: 160 nvme_printf(qpair->ctrlr, "%s sqid:%d cid:%d nsid:%d\n", 161 get_io_opcode_string(cmd->opc), qpair->id, cmd->cid, 162 cmd->nsid); 163 break; 164 default: 165 nvme_printf(qpair->ctrlr, "%s (%02x) sqid:%d cid:%d nsid:%d\n", 166 get_io_opcode_string(cmd->opc), cmd->opc, qpair->id, 167 cmd->cid, cmd->nsid); 168 break; 169 } 170 } 171 172 static void 173 nvme_qpair_print_command(struct nvme_qpair *qpair, struct nvme_command *cmd) 174 { 175 if (qpair->id == 0) 176 nvme_admin_qpair_print_command(qpair, cmd); 177 else 178 nvme_io_qpair_print_command(qpair, cmd); 179 } 180 181 struct nvme_status_string { 182 183 uint16_t sc; 184 const char * str; 185 }; 186 187 static struct nvme_status_string generic_status[] = { 188 { NVME_SC_SUCCESS, "SUCCESS" }, 189 { NVME_SC_INVALID_OPCODE, "INVALID OPCODE" }, 190 { NVME_SC_INVALID_FIELD, "INVALID_FIELD" }, 191 { NVME_SC_COMMAND_ID_CONFLICT, "COMMAND ID CONFLICT" }, 192 { NVME_SC_DATA_TRANSFER_ERROR, "DATA TRANSFER ERROR" }, 193 { NVME_SC_ABORTED_POWER_LOSS, "ABORTED - POWER LOSS" }, 194 { NVME_SC_INTERNAL_DEVICE_ERROR, "INTERNAL DEVICE ERROR" }, 195 { NVME_SC_ABORTED_BY_REQUEST, "ABORTED - BY REQUEST" }, 196 { NVME_SC_ABORTED_SQ_DELETION, "ABORTED - SQ DELETION" }, 197 { NVME_SC_ABORTED_FAILED_FUSED, "ABORTED - FAILED FUSED" }, 198 { NVME_SC_ABORTED_MISSING_FUSED, "ABORTED - MISSING FUSED" }, 199 { NVME_SC_INVALID_NAMESPACE_OR_FORMAT, "INVALID NAMESPACE OR FORMAT" }, 200 { NVME_SC_COMMAND_SEQUENCE_ERROR, "COMMAND SEQUENCE ERROR" }, 201 { NVME_SC_INVALID_SGL_SEGMENT_DESCR, "INVALID SGL SEGMENT DESCRIPTOR" }, 202 { NVME_SC_INVALID_NUMBER_OF_SGL_DESCR, "INVALID NUMBER OF SGL DESCRIPTORS" }, 203 { NVME_SC_DATA_SGL_LENGTH_INVALID, "DATA SGL LENGTH INVALID" }, 204 { NVME_SC_METADATA_SGL_LENGTH_INVALID, "METADATA SGL LENGTH INVALID" }, 205 { NVME_SC_SGL_DESCRIPTOR_TYPE_INVALID, "SGL DESCRIPTOR TYPE INVALID" }, 206 { NVME_SC_INVALID_USE_OF_CMB, "INVALID USE OF CONTROLLER MEMORY BUFFER" }, 207 { NVME_SC_PRP_OFFET_INVALID, "PRP OFFET INVALID" }, 208 { NVME_SC_ATOMIC_WRITE_UNIT_EXCEEDED, "ATOMIC WRITE UNIT EXCEEDED" }, 209 { NVME_SC_OPERATION_DENIED, "OPERATION DENIED" }, 210 { NVME_SC_SGL_OFFSET_INVALID, "SGL OFFSET INVALID" }, 211 { NVME_SC_HOST_ID_INCONSISTENT_FORMAT, "HOST IDENTIFIER INCONSISTENT FORMAT" }, 212 { NVME_SC_KEEP_ALIVE_TIMEOUT_EXPIRED, "KEEP ALIVE TIMEOUT EXPIRED" }, 213 { NVME_SC_KEEP_ALIVE_TIMEOUT_INVALID, "KEEP ALIVE TIMEOUT INVALID" }, 214 { NVME_SC_ABORTED_DUE_TO_PREEMPT, "COMMAND ABORTED DUE TO PREEMPT AND ABORT" }, 215 { NVME_SC_SANITIZE_FAILED, "SANITIZE FAILED" }, 216 { NVME_SC_SANITIZE_IN_PROGRESS, "SANITIZE IN PROGRESS" }, 217 { NVME_SC_SGL_DATA_BLOCK_GRAN_INVALID, "SGL_DATA_BLOCK_GRANULARITY_INVALID" }, 218 { NVME_SC_NOT_SUPPORTED_IN_CMB, "COMMAND NOT SUPPORTED FOR QUEUE IN CMB" }, 219 220 { NVME_SC_LBA_OUT_OF_RANGE, "LBA OUT OF RANGE" }, 221 { NVME_SC_CAPACITY_EXCEEDED, "CAPACITY EXCEEDED" }, 222 { NVME_SC_NAMESPACE_NOT_READY, "NAMESPACE NOT READY" }, 223 { NVME_SC_RESERVATION_CONFLICT, "RESERVATION CONFLICT" }, 224 { NVME_SC_FORMAT_IN_PROGRESS, "FORMAT IN PROGRESS" }, 225 { 0xFFFF, "GENERIC" } 226 }; 227 228 static struct nvme_status_string command_specific_status[] = { 229 { NVME_SC_COMPLETION_QUEUE_INVALID, "INVALID COMPLETION QUEUE" }, 230 { NVME_SC_INVALID_QUEUE_IDENTIFIER, "INVALID QUEUE IDENTIFIER" }, 231 { NVME_SC_MAXIMUM_QUEUE_SIZE_EXCEEDED, "MAX QUEUE SIZE EXCEEDED" }, 232 { NVME_SC_ABORT_COMMAND_LIMIT_EXCEEDED, "ABORT CMD LIMIT EXCEEDED" }, 233 { NVME_SC_ASYNC_EVENT_REQUEST_LIMIT_EXCEEDED, "ASYNC LIMIT EXCEEDED" }, 234 { NVME_SC_INVALID_FIRMWARE_SLOT, "INVALID FIRMWARE SLOT" }, 235 { NVME_SC_INVALID_FIRMWARE_IMAGE, "INVALID FIRMWARE IMAGE" }, 236 { NVME_SC_INVALID_INTERRUPT_VECTOR, "INVALID INTERRUPT VECTOR" }, 237 { NVME_SC_INVALID_LOG_PAGE, "INVALID LOG PAGE" }, 238 { NVME_SC_INVALID_FORMAT, "INVALID FORMAT" }, 239 { NVME_SC_FIRMWARE_REQUIRES_RESET, "FIRMWARE REQUIRES RESET" }, 240 { NVME_SC_INVALID_QUEUE_DELETION, "INVALID QUEUE DELETION" }, 241 { NVME_SC_FEATURE_NOT_SAVEABLE, "FEATURE IDENTIFIER NOT SAVEABLE" }, 242 { NVME_SC_FEATURE_NOT_CHANGEABLE, "FEATURE NOT CHANGEABLE" }, 243 { NVME_SC_FEATURE_NOT_NS_SPECIFIC, "FEATURE NOT NAMESPACE SPECIFIC" }, 244 { NVME_SC_FW_ACT_REQUIRES_NVMS_RESET, "FIRMWARE ACTIVATION REQUIRES NVM SUBSYSTEM RESET" }, 245 { NVME_SC_FW_ACT_REQUIRES_RESET, "FIRMWARE ACTIVATION REQUIRES RESET" }, 246 { NVME_SC_FW_ACT_REQUIRES_TIME, "FIRMWARE ACTIVATION REQUIRES MAXIMUM TIME VIOLATION" }, 247 { NVME_SC_FW_ACT_PROHIBITED, "FIRMWARE ACTIVATION PROHIBITED" }, 248 { NVME_SC_OVERLAPPING_RANGE, "OVERLAPPING RANGE" }, 249 { NVME_SC_NS_INSUFFICIENT_CAPACITY, "NAMESPACE INSUFFICIENT CAPACITY" }, 250 { NVME_SC_NS_ID_UNAVAILABLE, "NAMESPACE IDENTIFIER UNAVAILABLE" }, 251 { NVME_SC_NS_ALREADY_ATTACHED, "NAMESPACE ALREADY ATTACHED" }, 252 { NVME_SC_NS_IS_PRIVATE, "NAMESPACE IS PRIVATE" }, 253 { NVME_SC_NS_NOT_ATTACHED, "NS NOT ATTACHED" }, 254 { NVME_SC_THIN_PROV_NOT_SUPPORTED, "THIN PROVISIONING NOT SUPPORTED" }, 255 { NVME_SC_CTRLR_LIST_INVALID, "CONTROLLER LIST INVALID" }, 256 { NVME_SC_SELT_TEST_IN_PROGRESS, "DEVICE SELT-TEST IN PROGRESS" }, 257 { NVME_SC_BOOT_PART_WRITE_PROHIB, "BOOT PARTITION WRITE PROHIBITED" }, 258 { NVME_SC_INVALID_CTRLR_ID, "INVALID CONTROLLER IDENTIFIER" }, 259 { NVME_SC_INVALID_SEC_CTRLR_STATE, "INVALID SECONDARY CONTROLLER STATE" }, 260 { NVME_SC_INVALID_NUM_OF_CTRLR_RESRC, "INVALID NUMBER OF CONTROLLER RESOURCES" }, 261 { NVME_SC_INVALID_RESOURCE_ID, "INVALID RESOURCE IDENTIFIER" }, 262 263 { NVME_SC_CONFLICTING_ATTRIBUTES, "CONFLICTING ATTRIBUTES" }, 264 { NVME_SC_INVALID_PROTECTION_INFO, "INVALID PROTECTION INFO" }, 265 { NVME_SC_ATTEMPTED_WRITE_TO_RO_PAGE, "WRITE TO RO PAGE" }, 266 { 0xFFFF, "COMMAND SPECIFIC" } 267 }; 268 269 static struct nvme_status_string media_error_status[] = { 270 { NVME_SC_WRITE_FAULTS, "WRITE FAULTS" }, 271 { NVME_SC_UNRECOVERED_READ_ERROR, "UNRECOVERED READ ERROR" }, 272 { NVME_SC_GUARD_CHECK_ERROR, "GUARD CHECK ERROR" }, 273 { NVME_SC_APPLICATION_TAG_CHECK_ERROR, "APPLICATION TAG CHECK ERROR" }, 274 { NVME_SC_REFERENCE_TAG_CHECK_ERROR, "REFERENCE TAG CHECK ERROR" }, 275 { NVME_SC_COMPARE_FAILURE, "COMPARE FAILURE" }, 276 { NVME_SC_ACCESS_DENIED, "ACCESS DENIED" }, 277 { NVME_SC_DEALLOCATED_OR_UNWRITTEN, "DEALLOCATED OR UNWRITTEN LOGICAL BLOCK" }, 278 { 0xFFFF, "MEDIA ERROR" } 279 }; 280 281 static const char * 282 get_status_string(uint16_t sct, uint16_t sc) 283 { 284 struct nvme_status_string *entry; 285 286 switch (sct) { 287 case NVME_SCT_GENERIC: 288 entry = generic_status; 289 break; 290 case NVME_SCT_COMMAND_SPECIFIC: 291 entry = command_specific_status; 292 break; 293 case NVME_SCT_MEDIA_ERROR: 294 entry = media_error_status; 295 break; 296 case NVME_SCT_VENDOR_SPECIFIC: 297 return ("VENDOR SPECIFIC"); 298 default: 299 return ("RESERVED"); 300 } 301 302 while (entry->sc != 0xFFFF) { 303 if (entry->sc == sc) 304 return (entry->str); 305 entry++; 306 } 307 return (entry->str); 308 } 309 310 static void 311 nvme_qpair_print_completion(struct nvme_qpair *qpair, 312 struct nvme_completion *cpl) 313 { 314 nvme_printf(qpair->ctrlr, "%s (%02x/%02x) sqid:%d cid:%d cdw0:%x\n", 315 get_status_string(cpl->status.sct, cpl->status.sc), 316 cpl->status.sct, cpl->status.sc, cpl->sqid, cpl->cid, cpl->cdw0); 317 } 318 319 static boolean_t 320 nvme_completion_is_retry(const struct nvme_completion *cpl) 321 { 322 /* 323 * TODO: spec is not clear how commands that are aborted due 324 * to TLER will be marked. So for now, it seems 325 * NAMESPACE_NOT_READY is the only case where we should 326 * look at the DNR bit. Requests failed with ABORTED_BY_REQUEST 327 * set the DNR bit correctly since the driver controls that. 328 */ 329 switch (cpl->status.sct) { 330 case NVME_SCT_GENERIC: 331 switch (cpl->status.sc) { 332 case NVME_SC_ABORTED_BY_REQUEST: 333 case NVME_SC_NAMESPACE_NOT_READY: 334 if (cpl->status.dnr) 335 return (0); 336 else 337 return (1); 338 case NVME_SC_INVALID_OPCODE: 339 case NVME_SC_INVALID_FIELD: 340 case NVME_SC_COMMAND_ID_CONFLICT: 341 case NVME_SC_DATA_TRANSFER_ERROR: 342 case NVME_SC_ABORTED_POWER_LOSS: 343 case NVME_SC_INTERNAL_DEVICE_ERROR: 344 case NVME_SC_ABORTED_SQ_DELETION: 345 case NVME_SC_ABORTED_FAILED_FUSED: 346 case NVME_SC_ABORTED_MISSING_FUSED: 347 case NVME_SC_INVALID_NAMESPACE_OR_FORMAT: 348 case NVME_SC_COMMAND_SEQUENCE_ERROR: 349 case NVME_SC_LBA_OUT_OF_RANGE: 350 case NVME_SC_CAPACITY_EXCEEDED: 351 default: 352 return (0); 353 } 354 case NVME_SCT_COMMAND_SPECIFIC: 355 case NVME_SCT_MEDIA_ERROR: 356 case NVME_SCT_VENDOR_SPECIFIC: 357 default: 358 return (0); 359 } 360 } 361 362 static void 363 nvme_qpair_complete_tracker(struct nvme_qpair *qpair, struct nvme_tracker *tr, 364 struct nvme_completion *cpl, error_print_t print_on_error) 365 { 366 struct nvme_request *req; 367 boolean_t retry, error; 368 369 req = tr->req; 370 error = nvme_completion_is_error(cpl); 371 retry = error && nvme_completion_is_retry(cpl) && 372 req->retries < nvme_retry_count; 373 374 if (error && (print_on_error == ERROR_PRINT_ALL || 375 (!retry && print_on_error == ERROR_PRINT_NO_RETRY))) { 376 nvme_qpair_print_command(qpair, &req->cmd); 377 nvme_qpair_print_completion(qpair, cpl); 378 } 379 380 qpair->act_tr[cpl->cid] = NULL; 381 382 KASSERT(cpl->cid == req->cmd.cid, ("cpl cid does not match cmd cid\n")); 383 384 if (req->cb_fn && !retry) 385 req->cb_fn(req->cb_arg, cpl); 386 387 mtx_lock(&qpair->lock); 388 callout_stop(&tr->timer); 389 390 if (retry) { 391 req->retries++; 392 nvme_qpair_submit_tracker(qpair, tr); 393 } else { 394 if (req->type != NVME_REQUEST_NULL) { 395 bus_dmamap_sync(qpair->dma_tag_payload, 396 tr->payload_dma_map, 397 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 398 bus_dmamap_unload(qpair->dma_tag_payload, 399 tr->payload_dma_map); 400 } 401 402 nvme_free_request(req); 403 tr->req = NULL; 404 405 TAILQ_REMOVE(&qpair->outstanding_tr, tr, tailq); 406 TAILQ_INSERT_HEAD(&qpair->free_tr, tr, tailq); 407 408 /* 409 * If the controller is in the middle of resetting, don't 410 * try to submit queued requests here - let the reset logic 411 * handle that instead. 412 */ 413 if (!STAILQ_EMPTY(&qpair->queued_req) && 414 !qpair->ctrlr->is_resetting) { 415 req = STAILQ_FIRST(&qpair->queued_req); 416 STAILQ_REMOVE_HEAD(&qpair->queued_req, stailq); 417 _nvme_qpair_submit_request(qpair, req); 418 } 419 } 420 421 mtx_unlock(&qpair->lock); 422 } 423 424 static void 425 nvme_qpair_manual_complete_tracker(struct nvme_qpair *qpair, 426 struct nvme_tracker *tr, uint32_t sct, uint32_t sc, uint32_t dnr, 427 error_print_t print_on_error) 428 { 429 struct nvme_completion cpl; 430 431 memset(&cpl, 0, sizeof(cpl)); 432 cpl.sqid = qpair->id; 433 cpl.cid = tr->cid; 434 cpl.status.sct = sct; 435 cpl.status.sc = sc; 436 cpl.status.dnr = dnr; 437 nvme_qpair_complete_tracker(qpair, tr, &cpl, print_on_error); 438 } 439 440 void 441 nvme_qpair_manual_complete_request(struct nvme_qpair *qpair, 442 struct nvme_request *req, uint32_t sct, uint32_t sc) 443 { 444 struct nvme_completion cpl; 445 boolean_t error; 446 447 memset(&cpl, 0, sizeof(cpl)); 448 cpl.sqid = qpair->id; 449 cpl.status.sct = sct; 450 cpl.status.sc = sc; 451 452 error = nvme_completion_is_error(&cpl); 453 454 if (error) { 455 nvme_qpair_print_command(qpair, &req->cmd); 456 nvme_qpair_print_completion(qpair, &cpl); 457 } 458 459 if (req->cb_fn) 460 req->cb_fn(req->cb_arg, &cpl); 461 462 nvme_free_request(req); 463 } 464 465 bool 466 nvme_qpair_process_completions(struct nvme_qpair *qpair) 467 { 468 struct nvme_tracker *tr; 469 struct nvme_completion *cpl; 470 int done = 0; 471 472 qpair->num_intr_handler_calls++; 473 474 if (!qpair->is_enabled) 475 /* 476 * qpair is not enabled, likely because a controller reset is 477 * is in progress. Ignore the interrupt - any I/O that was 478 * associated with this interrupt will get retried when the 479 * reset is complete. 480 */ 481 return (false); 482 483 bus_dmamap_sync(qpair->dma_tag, qpair->queuemem_map, 484 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 485 while (1) { 486 cpl = &qpair->cpl[qpair->cq_head]; 487 488 if (cpl->status.p != qpair->phase) 489 break; 490 491 tr = qpair->act_tr[cpl->cid]; 492 493 if (tr != NULL) { 494 nvme_qpair_complete_tracker(qpair, tr, cpl, ERROR_PRINT_ALL); 495 qpair->sq_head = cpl->sqhd; 496 done++; 497 } else { 498 nvme_printf(qpair->ctrlr, 499 "cpl does not map to outstanding cmd\n"); 500 nvme_dump_completion(cpl); 501 KASSERT(0, ("received completion for unknown cmd\n")); 502 } 503 504 if (++qpair->cq_head == qpair->num_entries) { 505 qpair->cq_head = 0; 506 qpair->phase = !qpair->phase; 507 } 508 509 nvme_mmio_write_4(qpair->ctrlr, doorbell[qpair->id].cq_hdbl, 510 qpair->cq_head); 511 } 512 return (done != 0); 513 } 514 515 static void 516 nvme_qpair_msix_handler(void *arg) 517 { 518 struct nvme_qpair *qpair = arg; 519 520 nvme_qpair_process_completions(qpair); 521 } 522 523 int 524 nvme_qpair_construct(struct nvme_qpair *qpair, uint32_t id, 525 uint16_t vector, uint32_t num_entries, uint32_t num_trackers, 526 struct nvme_controller *ctrlr) 527 { 528 struct nvme_tracker *tr; 529 size_t cmdsz, cplsz, prpsz, allocsz, prpmemsz; 530 uint64_t queuemem_phys, prpmem_phys, list_phys; 531 uint8_t *queuemem, *prpmem, *prp_list; 532 int i, err; 533 534 qpair->id = id; 535 qpair->vector = vector; 536 qpair->num_entries = num_entries; 537 qpair->num_trackers = num_trackers; 538 qpair->ctrlr = ctrlr; 539 540 if (ctrlr->msix_enabled) { 541 542 /* 543 * MSI-X vector resource IDs start at 1, so we add one to 544 * the queue's vector to get the corresponding rid to use. 545 */ 546 qpair->rid = vector + 1; 547 548 qpair->res = bus_alloc_resource_any(ctrlr->dev, SYS_RES_IRQ, 549 &qpair->rid, RF_ACTIVE); 550 bus_setup_intr(ctrlr->dev, qpair->res, 551 INTR_TYPE_MISC | INTR_MPSAFE, NULL, 552 nvme_qpair_msix_handler, qpair, &qpair->tag); 553 if (id == 0) { 554 bus_describe_intr(ctrlr->dev, qpair->res, qpair->tag, 555 "admin"); 556 } else { 557 bus_describe_intr(ctrlr->dev, qpair->res, qpair->tag, 558 "io%d", id - 1); 559 } 560 } 561 562 mtx_init(&qpair->lock, "nvme qpair lock", NULL, MTX_DEF); 563 564 /* Note: NVMe PRP format is restricted to 4-byte alignment. */ 565 err = bus_dma_tag_create(bus_get_dma_tag(ctrlr->dev), 566 4, PAGE_SIZE, BUS_SPACE_MAXADDR, 567 BUS_SPACE_MAXADDR, NULL, NULL, NVME_MAX_XFER_SIZE, 568 (NVME_MAX_XFER_SIZE/PAGE_SIZE)+1, PAGE_SIZE, 0, 569 NULL, NULL, &qpair->dma_tag_payload); 570 if (err != 0) { 571 nvme_printf(ctrlr, "payload tag create failed %d\n", err); 572 goto out; 573 } 574 575 /* 576 * Each component must be page aligned, and individual PRP lists 577 * cannot cross a page boundary. 578 */ 579 cmdsz = qpair->num_entries * sizeof(struct nvme_command); 580 cmdsz = roundup2(cmdsz, PAGE_SIZE); 581 cplsz = qpair->num_entries * sizeof(struct nvme_completion); 582 cplsz = roundup2(cplsz, PAGE_SIZE); 583 prpsz = sizeof(uint64_t) * NVME_MAX_PRP_LIST_ENTRIES;; 584 prpmemsz = qpair->num_trackers * prpsz; 585 allocsz = cmdsz + cplsz + prpmemsz; 586 587 err = bus_dma_tag_create(bus_get_dma_tag(ctrlr->dev), 588 PAGE_SIZE, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, 589 allocsz, 1, allocsz, 0, NULL, NULL, &qpair->dma_tag); 590 if (err != 0) { 591 nvme_printf(ctrlr, "tag create failed %d\n", err); 592 goto out; 593 } 594 595 if (bus_dmamem_alloc(qpair->dma_tag, (void **)&queuemem, 596 BUS_DMA_NOWAIT, &qpair->queuemem_map)) { 597 nvme_printf(ctrlr, "failed to alloc qpair memory\n"); 598 goto out; 599 } 600 601 if (bus_dmamap_load(qpair->dma_tag, qpair->queuemem_map, 602 queuemem, allocsz, nvme_single_map, &queuemem_phys, 0) != 0) { 603 nvme_printf(ctrlr, "failed to load qpair memory\n"); 604 goto out; 605 } 606 607 qpair->num_cmds = 0; 608 qpair->num_intr_handler_calls = 0; 609 qpair->cmd = (struct nvme_command *)queuemem; 610 qpair->cpl = (struct nvme_completion *)(queuemem + cmdsz); 611 prpmem = (uint8_t *)(queuemem + cmdsz + cplsz); 612 qpair->cmd_bus_addr = queuemem_phys; 613 qpair->cpl_bus_addr = queuemem_phys + cmdsz; 614 prpmem_phys = queuemem_phys + cmdsz + cplsz; 615 616 qpair->sq_tdbl_off = nvme_mmio_offsetof(doorbell[id].sq_tdbl); 617 qpair->cq_hdbl_off = nvme_mmio_offsetof(doorbell[id].cq_hdbl); 618 619 TAILQ_INIT(&qpair->free_tr); 620 TAILQ_INIT(&qpair->outstanding_tr); 621 STAILQ_INIT(&qpair->queued_req); 622 623 list_phys = prpmem_phys; 624 prp_list = prpmem; 625 for (i = 0; i < qpair->num_trackers; i++) { 626 627 if (list_phys + prpsz > prpmem_phys + prpmemsz) { 628 qpair->num_trackers = i; 629 break; 630 } 631 632 /* 633 * Make sure that the PRP list for this tracker doesn't 634 * overflow to another page. 635 */ 636 if (trunc_page(list_phys) != 637 trunc_page(list_phys + prpsz - 1)) { 638 list_phys = roundup2(list_phys, PAGE_SIZE); 639 prp_list = 640 (uint8_t *)roundup2((uintptr_t)prp_list, PAGE_SIZE); 641 } 642 643 tr = malloc(sizeof(*tr), M_NVME, M_ZERO | M_WAITOK); 644 bus_dmamap_create(qpair->dma_tag_payload, 0, 645 &tr->payload_dma_map); 646 callout_init(&tr->timer, 1); 647 tr->cid = i; 648 tr->qpair = qpair; 649 tr->prp = (uint64_t *)prp_list; 650 tr->prp_bus_addr = list_phys; 651 TAILQ_INSERT_HEAD(&qpair->free_tr, tr, tailq); 652 list_phys += prpsz; 653 prp_list += prpsz; 654 } 655 656 if (qpair->num_trackers == 0) { 657 nvme_printf(ctrlr, "failed to allocate enough trackers\n"); 658 goto out; 659 } 660 661 qpair->act_tr = malloc(sizeof(struct nvme_tracker *) * 662 qpair->num_entries, M_NVME, M_ZERO | M_WAITOK); 663 return (0); 664 665 out: 666 nvme_qpair_destroy(qpair); 667 return (ENOMEM); 668 } 669 670 static void 671 nvme_qpair_destroy(struct nvme_qpair *qpair) 672 { 673 struct nvme_tracker *tr; 674 675 if (qpair->tag) 676 bus_teardown_intr(qpair->ctrlr->dev, qpair->res, qpair->tag); 677 678 if (mtx_initialized(&qpair->lock)) 679 mtx_destroy(&qpair->lock); 680 681 if (qpair->res) 682 bus_release_resource(qpair->ctrlr->dev, SYS_RES_IRQ, 683 rman_get_rid(qpair->res), qpair->res); 684 685 if (qpair->cmd != NULL) { 686 bus_dmamap_unload(qpair->dma_tag, qpair->queuemem_map); 687 bus_dmamem_free(qpair->dma_tag, qpair->cmd, 688 qpair->queuemem_map); 689 } 690 691 if (qpair->act_tr) 692 free(qpair->act_tr, M_NVME); 693 694 while (!TAILQ_EMPTY(&qpair->free_tr)) { 695 tr = TAILQ_FIRST(&qpair->free_tr); 696 TAILQ_REMOVE(&qpair->free_tr, tr, tailq); 697 bus_dmamap_destroy(qpair->dma_tag_payload, 698 tr->payload_dma_map); 699 free(tr, M_NVME); 700 } 701 702 if (qpair->dma_tag) 703 bus_dma_tag_destroy(qpair->dma_tag); 704 705 if (qpair->dma_tag_payload) 706 bus_dma_tag_destroy(qpair->dma_tag_payload); 707 } 708 709 static void 710 nvme_admin_qpair_abort_aers(struct nvme_qpair *qpair) 711 { 712 struct nvme_tracker *tr; 713 714 tr = TAILQ_FIRST(&qpair->outstanding_tr); 715 while (tr != NULL) { 716 if (tr->req->cmd.opc == NVME_OPC_ASYNC_EVENT_REQUEST) { 717 nvme_qpair_manual_complete_tracker(qpair, tr, 718 NVME_SCT_GENERIC, NVME_SC_ABORTED_SQ_DELETION, 0, 719 ERROR_PRINT_NONE); 720 tr = TAILQ_FIRST(&qpair->outstanding_tr); 721 } else { 722 tr = TAILQ_NEXT(tr, tailq); 723 } 724 } 725 } 726 727 void 728 nvme_admin_qpair_destroy(struct nvme_qpair *qpair) 729 { 730 731 nvme_admin_qpair_abort_aers(qpair); 732 nvme_qpair_destroy(qpair); 733 } 734 735 void 736 nvme_io_qpair_destroy(struct nvme_qpair *qpair) 737 { 738 739 nvme_qpair_destroy(qpair); 740 } 741 742 static void 743 nvme_abort_complete(void *arg, const struct nvme_completion *status) 744 { 745 struct nvme_tracker *tr = arg; 746 747 /* 748 * If cdw0 == 1, the controller was not able to abort the command 749 * we requested. We still need to check the active tracker array, 750 * to cover race where I/O timed out at same time controller was 751 * completing the I/O. 752 */ 753 if (status->cdw0 == 1 && tr->qpair->act_tr[tr->cid] != NULL) { 754 /* 755 * An I/O has timed out, and the controller was unable to 756 * abort it for some reason. Construct a fake completion 757 * status, and then complete the I/O's tracker manually. 758 */ 759 nvme_printf(tr->qpair->ctrlr, 760 "abort command failed, aborting command manually\n"); 761 nvme_qpair_manual_complete_tracker(tr->qpair, tr, 762 NVME_SCT_GENERIC, NVME_SC_ABORTED_BY_REQUEST, 0, ERROR_PRINT_ALL); 763 } 764 } 765 766 static void 767 nvme_timeout(void *arg) 768 { 769 struct nvme_tracker *tr = arg; 770 struct nvme_qpair *qpair = tr->qpair; 771 struct nvme_controller *ctrlr = qpair->ctrlr; 772 union csts_register csts; 773 774 /* 775 * Read csts to get value of cfs - controller fatal status. 776 * If no fatal status, try to call the completion routine, and 777 * if completes transactions, report a missed interrupt and 778 * return (this may need to be rate limited). Otherwise, if 779 * aborts are enabled and the controller is not reporting 780 * fatal status, abort the command. Otherwise, just reset the 781 * controller and hope for the best. 782 */ 783 csts.raw = nvme_mmio_read_4(ctrlr, csts); 784 if (csts.bits.cfs == 0 && nvme_qpair_process_completions(qpair)) { 785 nvme_printf(ctrlr, "Missing interrupt\n"); 786 return; 787 } 788 if (ctrlr->enable_aborts && csts.bits.cfs == 0) { 789 nvme_printf(ctrlr, "Aborting command due to a timeout.\n"); 790 nvme_ctrlr_cmd_abort(ctrlr, tr->cid, qpair->id, 791 nvme_abort_complete, tr); 792 } else { 793 nvme_printf(ctrlr, "Resetting controller due to a timeout%s.\n", 794 (csts.raw == 0xffffffff) ? " and possible hot unplug" : 795 (csts.bits.cfs ? " and fatal error status" : "")); 796 nvme_ctrlr_reset(ctrlr); 797 } 798 } 799 800 void 801 nvme_qpair_submit_tracker(struct nvme_qpair *qpair, struct nvme_tracker *tr) 802 { 803 struct nvme_request *req; 804 struct nvme_controller *ctrlr; 805 806 mtx_assert(&qpair->lock, MA_OWNED); 807 808 req = tr->req; 809 req->cmd.cid = tr->cid; 810 qpair->act_tr[tr->cid] = tr; 811 ctrlr = qpair->ctrlr; 812 813 if (req->timeout) 814 callout_reset_curcpu(&tr->timer, ctrlr->timeout_period * hz, 815 nvme_timeout, tr); 816 817 /* Copy the command from the tracker to the submission queue. */ 818 memcpy(&qpair->cmd[qpair->sq_tail], &req->cmd, sizeof(req->cmd)); 819 820 if (++qpair->sq_tail == qpair->num_entries) 821 qpair->sq_tail = 0; 822 823 bus_dmamap_sync(qpair->dma_tag, qpair->queuemem_map, 824 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 825 #ifndef __powerpc__ 826 /* 827 * powerpc's bus_dmamap_sync() already includes a heavyweight sync, but 828 * no other archs do. 829 */ 830 wmb(); 831 #endif 832 833 nvme_mmio_write_4(qpair->ctrlr, doorbell[qpair->id].sq_tdbl, 834 qpair->sq_tail); 835 836 qpair->num_cmds++; 837 } 838 839 static void 840 nvme_payload_map(void *arg, bus_dma_segment_t *seg, int nseg, int error) 841 { 842 struct nvme_tracker *tr = arg; 843 uint32_t cur_nseg; 844 845 /* 846 * If the mapping operation failed, return immediately. The caller 847 * is responsible for detecting the error status and failing the 848 * tracker manually. 849 */ 850 if (error != 0) { 851 nvme_printf(tr->qpair->ctrlr, 852 "nvme_payload_map err %d\n", error); 853 return; 854 } 855 856 /* 857 * Note that we specified PAGE_SIZE for alignment and max 858 * segment size when creating the bus dma tags. So here 859 * we can safely just transfer each segment to its 860 * associated PRP entry. 861 */ 862 tr->req->cmd.prp1 = seg[0].ds_addr; 863 864 if (nseg == 2) { 865 tr->req->cmd.prp2 = seg[1].ds_addr; 866 } else if (nseg > 2) { 867 cur_nseg = 1; 868 tr->req->cmd.prp2 = (uint64_t)tr->prp_bus_addr; 869 while (cur_nseg < nseg) { 870 tr->prp[cur_nseg-1] = 871 (uint64_t)seg[cur_nseg].ds_addr; 872 cur_nseg++; 873 } 874 } else { 875 /* 876 * prp2 should not be used by the controller 877 * since there is only one segment, but set 878 * to 0 just to be safe. 879 */ 880 tr->req->cmd.prp2 = 0; 881 } 882 883 bus_dmamap_sync(tr->qpair->dma_tag_payload, tr->payload_dma_map, 884 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 885 nvme_qpair_submit_tracker(tr->qpair, tr); 886 } 887 888 static void 889 _nvme_qpair_submit_request(struct nvme_qpair *qpair, struct nvme_request *req) 890 { 891 struct nvme_tracker *tr; 892 int err = 0; 893 894 mtx_assert(&qpair->lock, MA_OWNED); 895 896 tr = TAILQ_FIRST(&qpair->free_tr); 897 req->qpair = qpair; 898 899 if (tr == NULL || !qpair->is_enabled) { 900 /* 901 * No tracker is available, or the qpair is disabled due to 902 * an in-progress controller-level reset or controller 903 * failure. 904 */ 905 906 if (qpair->ctrlr->is_failed) { 907 /* 908 * The controller has failed. Post the request to a 909 * task where it will be aborted, so that we do not 910 * invoke the request's callback in the context 911 * of the submission. 912 */ 913 nvme_ctrlr_post_failed_request(qpair->ctrlr, req); 914 } else { 915 /* 916 * Put the request on the qpair's request queue to be 917 * processed when a tracker frees up via a command 918 * completion or when the controller reset is 919 * completed. 920 */ 921 STAILQ_INSERT_TAIL(&qpair->queued_req, req, stailq); 922 } 923 return; 924 } 925 926 TAILQ_REMOVE(&qpair->free_tr, tr, tailq); 927 TAILQ_INSERT_TAIL(&qpair->outstanding_tr, tr, tailq); 928 tr->req = req; 929 930 switch (req->type) { 931 case NVME_REQUEST_VADDR: 932 KASSERT(req->payload_size <= qpair->ctrlr->max_xfer_size, 933 ("payload_size (%d) exceeds max_xfer_size (%d)\n", 934 req->payload_size, qpair->ctrlr->max_xfer_size)); 935 err = bus_dmamap_load(tr->qpair->dma_tag_payload, 936 tr->payload_dma_map, req->u.payload, req->payload_size, 937 nvme_payload_map, tr, 0); 938 if (err != 0) 939 nvme_printf(qpair->ctrlr, 940 "bus_dmamap_load returned 0x%x!\n", err); 941 break; 942 case NVME_REQUEST_NULL: 943 nvme_qpair_submit_tracker(tr->qpair, tr); 944 break; 945 case NVME_REQUEST_BIO: 946 KASSERT(req->u.bio->bio_bcount <= qpair->ctrlr->max_xfer_size, 947 ("bio->bio_bcount (%jd) exceeds max_xfer_size (%d)\n", 948 (intmax_t)req->u.bio->bio_bcount, 949 qpair->ctrlr->max_xfer_size)); 950 err = bus_dmamap_load_bio(tr->qpair->dma_tag_payload, 951 tr->payload_dma_map, req->u.bio, nvme_payload_map, tr, 0); 952 if (err != 0) 953 nvme_printf(qpair->ctrlr, 954 "bus_dmamap_load_bio returned 0x%x!\n", err); 955 break; 956 case NVME_REQUEST_CCB: 957 err = bus_dmamap_load_ccb(tr->qpair->dma_tag_payload, 958 tr->payload_dma_map, req->u.payload, 959 nvme_payload_map, tr, 0); 960 if (err != 0) 961 nvme_printf(qpair->ctrlr, 962 "bus_dmamap_load_ccb returned 0x%x!\n", err); 963 break; 964 default: 965 panic("unknown nvme request type 0x%x\n", req->type); 966 break; 967 } 968 969 if (err != 0) { 970 /* 971 * The dmamap operation failed, so we manually fail the 972 * tracker here with DATA_TRANSFER_ERROR status. 973 * 974 * nvme_qpair_manual_complete_tracker must not be called 975 * with the qpair lock held. 976 */ 977 mtx_unlock(&qpair->lock); 978 nvme_qpair_manual_complete_tracker(qpair, tr, NVME_SCT_GENERIC, 979 NVME_SC_DATA_TRANSFER_ERROR, DO_NOT_RETRY, ERROR_PRINT_ALL); 980 mtx_lock(&qpair->lock); 981 } 982 } 983 984 void 985 nvme_qpair_submit_request(struct nvme_qpair *qpair, struct nvme_request *req) 986 { 987 988 mtx_lock(&qpair->lock); 989 _nvme_qpair_submit_request(qpair, req); 990 mtx_unlock(&qpair->lock); 991 } 992 993 static void 994 nvme_qpair_enable(struct nvme_qpair *qpair) 995 { 996 997 qpair->is_enabled = TRUE; 998 } 999 1000 void 1001 nvme_qpair_reset(struct nvme_qpair *qpair) 1002 { 1003 1004 qpair->sq_head = qpair->sq_tail = qpair->cq_head = 0; 1005 1006 /* 1007 * First time through the completion queue, HW will set phase 1008 * bit on completions to 1. So set this to 1 here, indicating 1009 * we're looking for a 1 to know which entries have completed. 1010 * we'll toggle the bit each time when the completion queue 1011 * rolls over. 1012 */ 1013 qpair->phase = 1; 1014 1015 memset(qpair->cmd, 0, 1016 qpair->num_entries * sizeof(struct nvme_command)); 1017 memset(qpair->cpl, 0, 1018 qpair->num_entries * sizeof(struct nvme_completion)); 1019 } 1020 1021 void 1022 nvme_admin_qpair_enable(struct nvme_qpair *qpair) 1023 { 1024 struct nvme_tracker *tr; 1025 struct nvme_tracker *tr_temp; 1026 1027 /* 1028 * Manually abort each outstanding admin command. Do not retry 1029 * admin commands found here, since they will be left over from 1030 * a controller reset and its likely the context in which the 1031 * command was issued no longer applies. 1032 */ 1033 TAILQ_FOREACH_SAFE(tr, &qpair->outstanding_tr, tailq, tr_temp) { 1034 nvme_printf(qpair->ctrlr, 1035 "aborting outstanding admin command\n"); 1036 nvme_qpair_manual_complete_tracker(qpair, tr, NVME_SCT_GENERIC, 1037 NVME_SC_ABORTED_BY_REQUEST, DO_NOT_RETRY, ERROR_PRINT_ALL); 1038 } 1039 1040 nvme_qpair_enable(qpair); 1041 } 1042 1043 void 1044 nvme_io_qpair_enable(struct nvme_qpair *qpair) 1045 { 1046 STAILQ_HEAD(, nvme_request) temp; 1047 struct nvme_tracker *tr; 1048 struct nvme_tracker *tr_temp; 1049 struct nvme_request *req; 1050 1051 /* 1052 * Manually abort each outstanding I/O. This normally results in a 1053 * retry, unless the retry count on the associated request has 1054 * reached its limit. 1055 */ 1056 TAILQ_FOREACH_SAFE(tr, &qpair->outstanding_tr, tailq, tr_temp) { 1057 nvme_printf(qpair->ctrlr, "aborting outstanding i/o\n"); 1058 nvme_qpair_manual_complete_tracker(qpair, tr, NVME_SCT_GENERIC, 1059 NVME_SC_ABORTED_BY_REQUEST, 0, ERROR_PRINT_NO_RETRY); 1060 } 1061 1062 mtx_lock(&qpair->lock); 1063 1064 nvme_qpair_enable(qpair); 1065 1066 STAILQ_INIT(&temp); 1067 STAILQ_SWAP(&qpair->queued_req, &temp, nvme_request); 1068 1069 while (!STAILQ_EMPTY(&temp)) { 1070 req = STAILQ_FIRST(&temp); 1071 STAILQ_REMOVE_HEAD(&temp, stailq); 1072 nvme_printf(qpair->ctrlr, "resubmitting queued i/o\n"); 1073 nvme_qpair_print_command(qpair, &req->cmd); 1074 _nvme_qpair_submit_request(qpair, req); 1075 } 1076 1077 mtx_unlock(&qpair->lock); 1078 } 1079 1080 static void 1081 nvme_qpair_disable(struct nvme_qpair *qpair) 1082 { 1083 struct nvme_tracker *tr; 1084 1085 qpair->is_enabled = FALSE; 1086 mtx_lock(&qpair->lock); 1087 TAILQ_FOREACH(tr, &qpair->outstanding_tr, tailq) 1088 callout_stop(&tr->timer); 1089 mtx_unlock(&qpair->lock); 1090 } 1091 1092 void 1093 nvme_admin_qpair_disable(struct nvme_qpair *qpair) 1094 { 1095 1096 nvme_qpair_disable(qpair); 1097 nvme_admin_qpair_abort_aers(qpair); 1098 } 1099 1100 void 1101 nvme_io_qpair_disable(struct nvme_qpair *qpair) 1102 { 1103 1104 nvme_qpair_disable(qpair); 1105 } 1106 1107 void 1108 nvme_qpair_fail(struct nvme_qpair *qpair) 1109 { 1110 struct nvme_tracker *tr; 1111 struct nvme_request *req; 1112 1113 if (!mtx_initialized(&qpair->lock)) 1114 return; 1115 1116 mtx_lock(&qpair->lock); 1117 1118 while (!STAILQ_EMPTY(&qpair->queued_req)) { 1119 req = STAILQ_FIRST(&qpair->queued_req); 1120 STAILQ_REMOVE_HEAD(&qpair->queued_req, stailq); 1121 nvme_printf(qpair->ctrlr, "failing queued i/o\n"); 1122 mtx_unlock(&qpair->lock); 1123 nvme_qpair_manual_complete_request(qpair, req, NVME_SCT_GENERIC, 1124 NVME_SC_ABORTED_BY_REQUEST); 1125 mtx_lock(&qpair->lock); 1126 } 1127 1128 /* Manually abort each outstanding I/O. */ 1129 while (!TAILQ_EMPTY(&qpair->outstanding_tr)) { 1130 tr = TAILQ_FIRST(&qpair->outstanding_tr); 1131 /* 1132 * Do not remove the tracker. The abort_tracker path will 1133 * do that for us. 1134 */ 1135 nvme_printf(qpair->ctrlr, "failing outstanding i/o\n"); 1136 mtx_unlock(&qpair->lock); 1137 nvme_qpair_manual_complete_tracker(qpair, tr, NVME_SCT_GENERIC, 1138 NVME_SC_ABORTED_BY_REQUEST, DO_NOT_RETRY, ERROR_PRINT_ALL); 1139 mtx_lock(&qpair->lock); 1140 } 1141 1142 mtx_unlock(&qpair->lock); 1143 } 1144
Cache object: 0927d86d29e16785bffb26a1e729779d
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