2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (C) 2012-2014 Intel Corporation
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
35 #include <sys/domainset.h>
38 #include <dev/pci/pcivar.h>
40 #include "nvme_private.h"
42 typedef enum error_print { ERROR_PRINT_NONE, ERROR_PRINT_NO_RETRY, ERROR_PRINT_ALL } error_print_t;
43 #define DO_NOT_RETRY 1
45 static void _nvme_qpair_submit_request(struct nvme_qpair *qpair,
46 struct nvme_request *req);
47 static void nvme_qpair_destroy(struct nvme_qpair *qpair);
49 struct nvme_opcode_string {
55 static struct nvme_opcode_string admin_opcode[] = {
56 { NVME_OPC_DELETE_IO_SQ, "DELETE IO SQ" },
57 { NVME_OPC_CREATE_IO_SQ, "CREATE IO SQ" },
58 { NVME_OPC_GET_LOG_PAGE, "GET LOG PAGE" },
59 { NVME_OPC_DELETE_IO_CQ, "DELETE IO CQ" },
60 { NVME_OPC_CREATE_IO_CQ, "CREATE IO CQ" },
61 { NVME_OPC_IDENTIFY, "IDENTIFY" },
62 { NVME_OPC_ABORT, "ABORT" },
63 { NVME_OPC_SET_FEATURES, "SET FEATURES" },
64 { NVME_OPC_GET_FEATURES, "GET FEATURES" },
65 { NVME_OPC_ASYNC_EVENT_REQUEST, "ASYNC EVENT REQUEST" },
66 { NVME_OPC_FIRMWARE_ACTIVATE, "FIRMWARE ACTIVATE" },
67 { NVME_OPC_FIRMWARE_IMAGE_DOWNLOAD, "FIRMWARE IMAGE DOWNLOAD" },
68 { NVME_OPC_DEVICE_SELF_TEST, "DEVICE SELF-TEST" },
69 { NVME_OPC_NAMESPACE_ATTACHMENT, "NAMESPACE ATTACHMENT" },
70 { NVME_OPC_KEEP_ALIVE, "KEEP ALIVE" },
71 { NVME_OPC_DIRECTIVE_SEND, "DIRECTIVE SEND" },
72 { NVME_OPC_DIRECTIVE_RECEIVE, "DIRECTIVE RECEIVE" },
73 { NVME_OPC_VIRTUALIZATION_MANAGEMENT, "VIRTUALIZATION MANAGEMENT" },
74 { NVME_OPC_NVME_MI_SEND, "NVME-MI SEND" },
75 { NVME_OPC_NVME_MI_RECEIVE, "NVME-MI RECEIVE" },
76 { NVME_OPC_DOORBELL_BUFFER_CONFIG, "DOORBELL BUFFER CONFIG" },
77 { NVME_OPC_FORMAT_NVM, "FORMAT NVM" },
78 { NVME_OPC_SECURITY_SEND, "SECURITY SEND" },
79 { NVME_OPC_SECURITY_RECEIVE, "SECURITY RECEIVE" },
80 { NVME_OPC_SANITIZE, "SANITIZE" },
81 { NVME_OPC_GET_LBA_STATUS, "GET LBA STATUS" },
82 { 0xFFFF, "ADMIN COMMAND" }
85 static struct nvme_opcode_string io_opcode[] = {
86 { NVME_OPC_FLUSH, "FLUSH" },
87 { NVME_OPC_WRITE, "WRITE" },
88 { NVME_OPC_READ, "READ" },
89 { NVME_OPC_WRITE_UNCORRECTABLE, "WRITE UNCORRECTABLE" },
90 { NVME_OPC_COMPARE, "COMPARE" },
91 { NVME_OPC_WRITE_ZEROES, "WRITE ZEROES" },
92 { NVME_OPC_DATASET_MANAGEMENT, "DATASET MANAGEMENT" },
93 { NVME_OPC_VERIFY, "VERIFY" },
94 { NVME_OPC_RESERVATION_REGISTER, "RESERVATION REGISTER" },
95 { NVME_OPC_RESERVATION_REPORT, "RESERVATION REPORT" },
96 { NVME_OPC_RESERVATION_ACQUIRE, "RESERVATION ACQUIRE" },
97 { NVME_OPC_RESERVATION_RELEASE, "RESERVATION RELEASE" },
98 { 0xFFFF, "IO COMMAND" }
102 get_admin_opcode_string(uint16_t opc)
104 struct nvme_opcode_string *entry;
106 entry = admin_opcode;
108 while (entry->opc != 0xFFFF) {
109 if (entry->opc == opc)
117 get_io_opcode_string(uint16_t opc)
119 struct nvme_opcode_string *entry;
123 while (entry->opc != 0xFFFF) {
124 if (entry->opc == opc)
133 nvme_admin_qpair_print_command(struct nvme_qpair *qpair,
134 struct nvme_command *cmd)
137 nvme_printf(qpair->ctrlr, "%s (%02x) sqid:%d cid:%d nsid:%x "
138 "cdw10:%08x cdw11:%08x\n",
139 get_admin_opcode_string(cmd->opc), cmd->opc, qpair->id, cmd->cid,
140 le32toh(cmd->nsid), le32toh(cmd->cdw10), le32toh(cmd->cdw11));
144 nvme_io_qpair_print_command(struct nvme_qpair *qpair,
145 struct nvme_command *cmd)
151 case NVME_OPC_WRITE_UNCORRECTABLE:
152 case NVME_OPC_COMPARE:
153 case NVME_OPC_WRITE_ZEROES:
154 case NVME_OPC_VERIFY:
155 nvme_printf(qpair->ctrlr, "%s sqid:%d cid:%d nsid:%d "
157 get_io_opcode_string(cmd->opc), qpair->id, cmd->cid, le32toh(cmd->nsid),
158 ((unsigned long long)le32toh(cmd->cdw11) << 32) + le32toh(cmd->cdw10),
159 (le32toh(cmd->cdw12) & 0xFFFF) + 1);
162 case NVME_OPC_DATASET_MANAGEMENT:
163 case NVME_OPC_RESERVATION_REGISTER:
164 case NVME_OPC_RESERVATION_REPORT:
165 case NVME_OPC_RESERVATION_ACQUIRE:
166 case NVME_OPC_RESERVATION_RELEASE:
167 nvme_printf(qpair->ctrlr, "%s sqid:%d cid:%d nsid:%d\n",
168 get_io_opcode_string(cmd->opc), qpair->id, cmd->cid, le32toh(cmd->nsid));
171 nvme_printf(qpair->ctrlr, "%s (%02x) sqid:%d cid:%d nsid:%d\n",
172 get_io_opcode_string(cmd->opc), cmd->opc, qpair->id,
173 cmd->cid, le32toh(cmd->nsid));
179 nvme_qpair_print_command(struct nvme_qpair *qpair, struct nvme_command *cmd)
182 nvme_admin_qpair_print_command(qpair, cmd);
184 nvme_io_qpair_print_command(qpair, cmd);
185 if (nvme_verbose_cmd_dump) {
186 nvme_printf(qpair->ctrlr,
187 "nsid:%#x rsvd2:%#x rsvd3:%#x mptr:%#jx prp1:%#jx prp2:%#jx\n",
188 cmd->nsid, cmd->rsvd2, cmd->rsvd3, (uintmax_t)cmd->mptr,
189 (uintmax_t)cmd->prp1, (uintmax_t)cmd->prp2);
190 nvme_printf(qpair->ctrlr,
191 "cdw10: %#x cdw11:%#x cdw12:%#x cdw13:%#x cdw14:%#x cdw15:%#x\n",
192 cmd->cdw10, cmd->cdw11, cmd->cdw12, cmd->cdw13, cmd->cdw14,
197 struct nvme_status_string {
203 static struct nvme_status_string generic_status[] = {
204 { NVME_SC_SUCCESS, "SUCCESS" },
205 { NVME_SC_INVALID_OPCODE, "INVALID OPCODE" },
206 { NVME_SC_INVALID_FIELD, "INVALID_FIELD" },
207 { NVME_SC_COMMAND_ID_CONFLICT, "COMMAND ID CONFLICT" },
208 { NVME_SC_DATA_TRANSFER_ERROR, "DATA TRANSFER ERROR" },
209 { NVME_SC_ABORTED_POWER_LOSS, "ABORTED - POWER LOSS" },
210 { NVME_SC_INTERNAL_DEVICE_ERROR, "INTERNAL DEVICE ERROR" },
211 { NVME_SC_ABORTED_BY_REQUEST, "ABORTED - BY REQUEST" },
212 { NVME_SC_ABORTED_SQ_DELETION, "ABORTED - SQ DELETION" },
213 { NVME_SC_ABORTED_FAILED_FUSED, "ABORTED - FAILED FUSED" },
214 { NVME_SC_ABORTED_MISSING_FUSED, "ABORTED - MISSING FUSED" },
215 { NVME_SC_INVALID_NAMESPACE_OR_FORMAT, "INVALID NAMESPACE OR FORMAT" },
216 { NVME_SC_COMMAND_SEQUENCE_ERROR, "COMMAND SEQUENCE ERROR" },
217 { NVME_SC_INVALID_SGL_SEGMENT_DESCR, "INVALID SGL SEGMENT DESCRIPTOR" },
218 { NVME_SC_INVALID_NUMBER_OF_SGL_DESCR, "INVALID NUMBER OF SGL DESCRIPTORS" },
219 { NVME_SC_DATA_SGL_LENGTH_INVALID, "DATA SGL LENGTH INVALID" },
220 { NVME_SC_METADATA_SGL_LENGTH_INVALID, "METADATA SGL LENGTH INVALID" },
221 { NVME_SC_SGL_DESCRIPTOR_TYPE_INVALID, "SGL DESCRIPTOR TYPE INVALID" },
222 { NVME_SC_INVALID_USE_OF_CMB, "INVALID USE OF CONTROLLER MEMORY BUFFER" },
223 { NVME_SC_PRP_OFFET_INVALID, "PRP OFFET INVALID" },
224 { NVME_SC_ATOMIC_WRITE_UNIT_EXCEEDED, "ATOMIC WRITE UNIT EXCEEDED" },
225 { NVME_SC_OPERATION_DENIED, "OPERATION DENIED" },
226 { NVME_SC_SGL_OFFSET_INVALID, "SGL OFFSET INVALID" },
227 { NVME_SC_HOST_ID_INCONSISTENT_FORMAT, "HOST IDENTIFIER INCONSISTENT FORMAT" },
228 { NVME_SC_KEEP_ALIVE_TIMEOUT_EXPIRED, "KEEP ALIVE TIMEOUT EXPIRED" },
229 { NVME_SC_KEEP_ALIVE_TIMEOUT_INVALID, "KEEP ALIVE TIMEOUT INVALID" },
230 { NVME_SC_ABORTED_DUE_TO_PREEMPT, "COMMAND ABORTED DUE TO PREEMPT AND ABORT" },
231 { NVME_SC_SANITIZE_FAILED, "SANITIZE FAILED" },
232 { NVME_SC_SANITIZE_IN_PROGRESS, "SANITIZE IN PROGRESS" },
233 { NVME_SC_SGL_DATA_BLOCK_GRAN_INVALID, "SGL_DATA_BLOCK_GRANULARITY_INVALID" },
234 { NVME_SC_NOT_SUPPORTED_IN_CMB, "COMMAND NOT SUPPORTED FOR QUEUE IN CMB" },
235 { NVME_SC_NAMESPACE_IS_WRITE_PROTECTED, "NAMESPACE IS WRITE PROTECTED" },
236 { NVME_SC_COMMAND_INTERRUPTED, "COMMAND INTERRUPTED" },
237 { NVME_SC_TRANSIENT_TRANSPORT_ERROR, "TRANSIENT TRANSPORT ERROR" },
239 { NVME_SC_LBA_OUT_OF_RANGE, "LBA OUT OF RANGE" },
240 { NVME_SC_CAPACITY_EXCEEDED, "CAPACITY EXCEEDED" },
241 { NVME_SC_NAMESPACE_NOT_READY, "NAMESPACE NOT READY" },
242 { NVME_SC_RESERVATION_CONFLICT, "RESERVATION CONFLICT" },
243 { NVME_SC_FORMAT_IN_PROGRESS, "FORMAT IN PROGRESS" },
244 { 0xFFFF, "GENERIC" }
247 static struct nvme_status_string command_specific_status[] = {
248 { NVME_SC_COMPLETION_QUEUE_INVALID, "INVALID COMPLETION QUEUE" },
249 { NVME_SC_INVALID_QUEUE_IDENTIFIER, "INVALID QUEUE IDENTIFIER" },
250 { NVME_SC_MAXIMUM_QUEUE_SIZE_EXCEEDED, "MAX QUEUE SIZE EXCEEDED" },
251 { NVME_SC_ABORT_COMMAND_LIMIT_EXCEEDED, "ABORT CMD LIMIT EXCEEDED" },
252 { NVME_SC_ASYNC_EVENT_REQUEST_LIMIT_EXCEEDED, "ASYNC LIMIT EXCEEDED" },
253 { NVME_SC_INVALID_FIRMWARE_SLOT, "INVALID FIRMWARE SLOT" },
254 { NVME_SC_INVALID_FIRMWARE_IMAGE, "INVALID FIRMWARE IMAGE" },
255 { NVME_SC_INVALID_INTERRUPT_VECTOR, "INVALID INTERRUPT VECTOR" },
256 { NVME_SC_INVALID_LOG_PAGE, "INVALID LOG PAGE" },
257 { NVME_SC_INVALID_FORMAT, "INVALID FORMAT" },
258 { NVME_SC_FIRMWARE_REQUIRES_RESET, "FIRMWARE REQUIRES RESET" },
259 { NVME_SC_INVALID_QUEUE_DELETION, "INVALID QUEUE DELETION" },
260 { NVME_SC_FEATURE_NOT_SAVEABLE, "FEATURE IDENTIFIER NOT SAVEABLE" },
261 { NVME_SC_FEATURE_NOT_CHANGEABLE, "FEATURE NOT CHANGEABLE" },
262 { NVME_SC_FEATURE_NOT_NS_SPECIFIC, "FEATURE NOT NAMESPACE SPECIFIC" },
263 { NVME_SC_FW_ACT_REQUIRES_NVMS_RESET, "FIRMWARE ACTIVATION REQUIRES NVM SUBSYSTEM RESET" },
264 { NVME_SC_FW_ACT_REQUIRES_RESET, "FIRMWARE ACTIVATION REQUIRES RESET" },
265 { NVME_SC_FW_ACT_REQUIRES_TIME, "FIRMWARE ACTIVATION REQUIRES MAXIMUM TIME VIOLATION" },
266 { NVME_SC_FW_ACT_PROHIBITED, "FIRMWARE ACTIVATION PROHIBITED" },
267 { NVME_SC_OVERLAPPING_RANGE, "OVERLAPPING RANGE" },
268 { NVME_SC_NS_INSUFFICIENT_CAPACITY, "NAMESPACE INSUFFICIENT CAPACITY" },
269 { NVME_SC_NS_ID_UNAVAILABLE, "NAMESPACE IDENTIFIER UNAVAILABLE" },
270 { NVME_SC_NS_ALREADY_ATTACHED, "NAMESPACE ALREADY ATTACHED" },
271 { NVME_SC_NS_IS_PRIVATE, "NAMESPACE IS PRIVATE" },
272 { NVME_SC_NS_NOT_ATTACHED, "NS NOT ATTACHED" },
273 { NVME_SC_THIN_PROV_NOT_SUPPORTED, "THIN PROVISIONING NOT SUPPORTED" },
274 { NVME_SC_CTRLR_LIST_INVALID, "CONTROLLER LIST INVALID" },
275 { NVME_SC_SELT_TEST_IN_PROGRESS, "DEVICE SELT-TEST IN PROGRESS" },
276 { NVME_SC_BOOT_PART_WRITE_PROHIB, "BOOT PARTITION WRITE PROHIBITED" },
277 { NVME_SC_INVALID_CTRLR_ID, "INVALID CONTROLLER IDENTIFIER" },
278 { NVME_SC_INVALID_SEC_CTRLR_STATE, "INVALID SECONDARY CONTROLLER STATE" },
279 { NVME_SC_INVALID_NUM_OF_CTRLR_RESRC, "INVALID NUMBER OF CONTROLLER RESOURCES" },
280 { NVME_SC_INVALID_RESOURCE_ID, "INVALID RESOURCE IDENTIFIER" },
281 { NVME_SC_SANITIZE_PROHIBITED_WPMRE, "SANITIZE PROHIBITED WRITE PERSISTENT MEMORY REGION ENABLED" },
282 { NVME_SC_ANA_GROUP_ID_INVALID, "ANA GROUP IDENTIFIED INVALID" },
283 { NVME_SC_ANA_ATTACH_FAILED, "ANA ATTACH FAILED" },
285 { NVME_SC_CONFLICTING_ATTRIBUTES, "CONFLICTING ATTRIBUTES" },
286 { NVME_SC_INVALID_PROTECTION_INFO, "INVALID PROTECTION INFO" },
287 { NVME_SC_ATTEMPTED_WRITE_TO_RO_PAGE, "WRITE TO RO PAGE" },
288 { 0xFFFF, "COMMAND SPECIFIC" }
291 static struct nvme_status_string media_error_status[] = {
292 { NVME_SC_WRITE_FAULTS, "WRITE FAULTS" },
293 { NVME_SC_UNRECOVERED_READ_ERROR, "UNRECOVERED READ ERROR" },
294 { NVME_SC_GUARD_CHECK_ERROR, "GUARD CHECK ERROR" },
295 { NVME_SC_APPLICATION_TAG_CHECK_ERROR, "APPLICATION TAG CHECK ERROR" },
296 { NVME_SC_REFERENCE_TAG_CHECK_ERROR, "REFERENCE TAG CHECK ERROR" },
297 { NVME_SC_COMPARE_FAILURE, "COMPARE FAILURE" },
298 { NVME_SC_ACCESS_DENIED, "ACCESS DENIED" },
299 { NVME_SC_DEALLOCATED_OR_UNWRITTEN, "DEALLOCATED OR UNWRITTEN LOGICAL BLOCK" },
300 { 0xFFFF, "MEDIA ERROR" }
303 static struct nvme_status_string path_related_status[] = {
304 { NVME_SC_INTERNAL_PATH_ERROR, "INTERNAL PATH ERROR" },
305 { NVME_SC_ASYMMETRIC_ACCESS_PERSISTENT_LOSS, "ASYMMETRIC ACCESS PERSISTENT LOSS" },
306 { NVME_SC_ASYMMETRIC_ACCESS_INACCESSIBLE, "ASYMMETRIC ACCESS INACCESSIBLE" },
307 { NVME_SC_ASYMMETRIC_ACCESS_TRANSITION, "ASYMMETRIC ACCESS TRANSITION" },
308 { NVME_SC_CONTROLLER_PATHING_ERROR, "CONTROLLER PATHING ERROR" },
309 { NVME_SC_HOST_PATHING_ERROR, "HOST PATHING ERROR" },
310 { NVME_SC_COMMAND_ABOTHED_BY_HOST, "COMMAND ABOTHED BY HOST" },
311 { 0xFFFF, "PATH RELATED" },
315 get_status_string(uint16_t sct, uint16_t sc)
317 struct nvme_status_string *entry;
320 case NVME_SCT_GENERIC:
321 entry = generic_status;
323 case NVME_SCT_COMMAND_SPECIFIC:
324 entry = command_specific_status;
326 case NVME_SCT_MEDIA_ERROR:
327 entry = media_error_status;
329 case NVME_SCT_PATH_RELATED:
330 entry = path_related_status;
332 case NVME_SCT_VENDOR_SPECIFIC:
333 return ("VENDOR SPECIFIC");
338 while (entry->sc != 0xFFFF) {
347 nvme_qpair_print_completion(struct nvme_qpair *qpair,
348 struct nvme_completion *cpl)
352 sct = NVME_STATUS_GET_SCT(cpl->status);
353 sc = NVME_STATUS_GET_SC(cpl->status);
355 nvme_printf(qpair->ctrlr, "%s (%02x/%02x) sqid:%d cid:%d cdw0:%x\n",
356 get_status_string(sct, sc), sct, sc, cpl->sqid, cpl->cid,
361 nvme_completion_is_retry(const struct nvme_completion *cpl)
363 uint8_t sct, sc, dnr;
365 sct = NVME_STATUS_GET_SCT(cpl->status);
366 sc = NVME_STATUS_GET_SC(cpl->status);
367 dnr = NVME_STATUS_GET_DNR(cpl->status); /* Do Not Retry Bit */
370 * TODO: spec is not clear how commands that are aborted due
371 * to TLER will be marked. So for now, it seems
372 * NAMESPACE_NOT_READY is the only case where we should
373 * look at the DNR bit. Requests failed with ABORTED_BY_REQUEST
374 * set the DNR bit correctly since the driver controls that.
377 case NVME_SCT_GENERIC:
379 case NVME_SC_ABORTED_BY_REQUEST:
380 case NVME_SC_NAMESPACE_NOT_READY:
385 case NVME_SC_INVALID_OPCODE:
386 case NVME_SC_INVALID_FIELD:
387 case NVME_SC_COMMAND_ID_CONFLICT:
388 case NVME_SC_DATA_TRANSFER_ERROR:
389 case NVME_SC_ABORTED_POWER_LOSS:
390 case NVME_SC_INTERNAL_DEVICE_ERROR:
391 case NVME_SC_ABORTED_SQ_DELETION:
392 case NVME_SC_ABORTED_FAILED_FUSED:
393 case NVME_SC_ABORTED_MISSING_FUSED:
394 case NVME_SC_INVALID_NAMESPACE_OR_FORMAT:
395 case NVME_SC_COMMAND_SEQUENCE_ERROR:
396 case NVME_SC_LBA_OUT_OF_RANGE:
397 case NVME_SC_CAPACITY_EXCEEDED:
401 case NVME_SCT_COMMAND_SPECIFIC:
402 case NVME_SCT_MEDIA_ERROR:
404 case NVME_SCT_PATH_RELATED:
406 case NVME_SC_INTERNAL_PATH_ERROR:
414 case NVME_SCT_VENDOR_SPECIFIC:
421 nvme_qpair_complete_tracker(struct nvme_tracker *tr,
422 struct nvme_completion *cpl, error_print_t print_on_error)
424 struct nvme_qpair * qpair = tr->qpair;
425 struct nvme_request *req;
426 bool retry, error, retriable;
429 error = nvme_completion_is_error(cpl);
430 retriable = nvme_completion_is_retry(cpl);
431 retry = error && retriable && req->retries < nvme_retry_count;
433 qpair->num_retries++;
434 if (error && req->retries >= nvme_retry_count && retriable)
435 qpair->num_failures++;
437 if (error && (print_on_error == ERROR_PRINT_ALL ||
438 (!retry && print_on_error == ERROR_PRINT_NO_RETRY))) {
439 nvme_qpair_print_command(qpair, &req->cmd);
440 nvme_qpair_print_completion(qpair, cpl);
443 qpair->act_tr[cpl->cid] = NULL;
445 KASSERT(cpl->cid == req->cmd.cid, ("cpl cid does not match cmd cid\n"));
448 if (req->type != NVME_REQUEST_NULL) {
449 bus_dmamap_sync(qpair->dma_tag_payload,
451 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
454 req->cb_fn(req->cb_arg, cpl);
457 mtx_lock(&qpair->lock);
458 callout_stop(&tr->timer);
462 nvme_qpair_submit_tracker(qpair, tr);
464 if (req->type != NVME_REQUEST_NULL) {
465 bus_dmamap_unload(qpair->dma_tag_payload,
466 tr->payload_dma_map);
469 nvme_free_request(req);
472 TAILQ_REMOVE(&qpair->outstanding_tr, tr, tailq);
473 TAILQ_INSERT_HEAD(&qpair->free_tr, tr, tailq);
476 * If the controller is in the middle of resetting, don't
477 * try to submit queued requests here - let the reset logic
478 * handle that instead.
480 if (!STAILQ_EMPTY(&qpair->queued_req) &&
481 !qpair->ctrlr->is_resetting) {
482 req = STAILQ_FIRST(&qpair->queued_req);
483 STAILQ_REMOVE_HEAD(&qpair->queued_req, stailq);
484 _nvme_qpair_submit_request(qpair, req);
488 mtx_unlock(&qpair->lock);
492 nvme_qpair_manual_complete_tracker(
493 struct nvme_tracker *tr, uint32_t sct, uint32_t sc, uint32_t dnr,
494 error_print_t print_on_error)
496 struct nvme_completion cpl;
498 memset(&cpl, 0, sizeof(cpl));
500 struct nvme_qpair * qpair = tr->qpair;
502 cpl.sqid = qpair->id;
504 cpl.status |= (sct & NVME_STATUS_SCT_MASK) << NVME_STATUS_SCT_SHIFT;
505 cpl.status |= (sc & NVME_STATUS_SC_MASK) << NVME_STATUS_SC_SHIFT;
506 cpl.status |= (dnr & NVME_STATUS_DNR_MASK) << NVME_STATUS_DNR_SHIFT;
507 nvme_qpair_complete_tracker(tr, &cpl, print_on_error);
511 nvme_qpair_manual_complete_request(struct nvme_qpair *qpair,
512 struct nvme_request *req, uint32_t sct, uint32_t sc)
514 struct nvme_completion cpl;
517 memset(&cpl, 0, sizeof(cpl));
518 cpl.sqid = qpair->id;
519 cpl.status |= (sct & NVME_STATUS_SCT_MASK) << NVME_STATUS_SCT_SHIFT;
520 cpl.status |= (sc & NVME_STATUS_SC_MASK) << NVME_STATUS_SC_SHIFT;
522 error = nvme_completion_is_error(&cpl);
525 nvme_qpair_print_command(qpair, &req->cmd);
526 nvme_qpair_print_completion(qpair, &cpl);
530 req->cb_fn(req->cb_arg, &cpl);
532 nvme_free_request(req);
536 nvme_qpair_process_completions(struct nvme_qpair *qpair)
538 struct nvme_tracker *tr;
539 struct nvme_completion cpl;
541 bool in_panic = dumping || SCHEDULER_STOPPED();
543 qpair->num_intr_handler_calls++;
546 * qpair is not enabled, likely because a controller reset is is in
547 * progress. Ignore the interrupt - any I/O that was associated with
548 * this interrupt will get retried when the reset is complete.
550 if (!qpair->is_enabled)
554 * A panic can stop the CPU this routine is running on at any point. If
555 * we're called during a panic, complete the sq_head wrap protocol for
556 * the case where we are interrupted just after the increment at 1
557 * below, but before we can reset cq_head to zero at 2. Also cope with
558 * the case where we do the zero at 2, but may or may not have done the
559 * phase adjustment at step 3. The panic machinery flushes all pending
560 * memory writes, so we can make these strong ordering assumptions
561 * that would otherwise be unwise if we were racing in real time.
563 if (__predict_false(in_panic)) {
564 if (qpair->cq_head == qpair->num_entries) {
566 * Here we know that we need to zero cq_head and then negate
567 * the phase, which hasn't been assigned if cq_head isn't
568 * zero due to the atomic_store_rel.
571 qpair->phase = !qpair->phase;
572 } else if (qpair->cq_head == 0) {
574 * In this case, we know that the assignment at 2
575 * happened below, but we don't know if it 3 happened or
576 * not. To do this, we look at the last completion
577 * entry and set the phase to the opposite phase
578 * that it has. This gets us back in sync
580 cpl = qpair->cpl[qpair->num_entries - 1];
581 nvme_completion_swapbytes(&cpl);
582 qpair->phase = !NVME_STATUS_GET_P(cpl.status);
586 bus_dmamap_sync(qpair->dma_tag, qpair->queuemem_map,
587 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
589 cpl = qpair->cpl[qpair->cq_head];
591 /* Convert to host endian */
592 nvme_completion_swapbytes(&cpl);
594 if (NVME_STATUS_GET_P(cpl.status) != qpair->phase)
597 tr = qpair->act_tr[cpl.cid];
600 nvme_qpair_complete_tracker(tr, &cpl, ERROR_PRINT_ALL);
601 qpair->sq_head = cpl.sqhd;
603 } else if (!in_panic) {
605 * A missing tracker is normally an error. However, a
606 * panic can stop the CPU this routine is running on
607 * after completing an I/O but before updating
608 * qpair->cq_head at 1 below. Later, we re-enter this
609 * routine to poll I/O associated with the kernel
610 * dump. We find that the tr has been set to null before
611 * calling the completion routine. If it hasn't
612 * completed (or it triggers a panic), then '1' below
613 * won't have updated cq_head. Rather than panic again,
614 * ignore this condition because it's not unexpected.
616 nvme_printf(qpair->ctrlr,
617 "cpl does not map to outstanding cmd\n");
618 /* nvme_dump_completion expects device endianess */
619 nvme_dump_completion(&qpair->cpl[qpair->cq_head]);
620 KASSERT(0, ("received completion for unknown cmd"));
624 * There's a number of races with the following (see above) when
625 * the system panics. We compensate for each one of them by
626 * using the atomic store to force strong ordering (at least when
627 * viewed in the aftermath of a panic).
629 if (++qpair->cq_head == qpair->num_entries) { /* 1 */
630 atomic_store_rel_int(&qpair->cq_head, 0); /* 2 */
631 qpair->phase = !qpair->phase; /* 3 */
634 bus_space_write_4(qpair->ctrlr->bus_tag, qpair->ctrlr->bus_handle,
635 qpair->cq_hdbl_off, qpair->cq_head);
641 nvme_qpair_msix_handler(void *arg)
643 struct nvme_qpair *qpair = arg;
645 nvme_qpair_process_completions(qpair);
649 nvme_qpair_construct(struct nvme_qpair *qpair,
650 uint32_t num_entries, uint32_t num_trackers,
651 struct nvme_controller *ctrlr)
653 struct nvme_tracker *tr;
654 size_t cmdsz, cplsz, prpsz, allocsz, prpmemsz;
655 uint64_t queuemem_phys, prpmem_phys, list_phys;
656 uint8_t *queuemem, *prpmem, *prp_list;
659 qpair->vector = ctrlr->msix_enabled ? qpair->id : 0;
660 qpair->num_entries = num_entries;
661 qpair->num_trackers = num_trackers;
662 qpair->ctrlr = ctrlr;
664 if (ctrlr->msix_enabled) {
667 * MSI-X vector resource IDs start at 1, so we add one to
668 * the queue's vector to get the corresponding rid to use.
670 qpair->rid = qpair->vector + 1;
672 qpair->res = bus_alloc_resource_any(ctrlr->dev, SYS_RES_IRQ,
673 &qpair->rid, RF_ACTIVE);
674 if (bus_setup_intr(ctrlr->dev, qpair->res,
675 INTR_TYPE_MISC | INTR_MPSAFE, NULL,
676 nvme_qpair_msix_handler, qpair, &qpair->tag) != 0) {
677 nvme_printf(ctrlr, "unable to setup intx handler\n");
680 if (qpair->id == 0) {
681 bus_describe_intr(ctrlr->dev, qpair->res, qpair->tag,
684 bus_describe_intr(ctrlr->dev, qpair->res, qpair->tag,
685 "io%d", qpair->id - 1);
689 mtx_init(&qpair->lock, "nvme qpair lock", NULL, MTX_DEF);
691 /* Note: NVMe PRP format is restricted to 4-byte alignment. */
692 err = bus_dma_tag_create(bus_get_dma_tag(ctrlr->dev),
693 4, PAGE_SIZE, BUS_SPACE_MAXADDR,
694 BUS_SPACE_MAXADDR, NULL, NULL, NVME_MAX_XFER_SIZE,
695 (NVME_MAX_XFER_SIZE/PAGE_SIZE)+1, PAGE_SIZE, 0,
696 NULL, NULL, &qpair->dma_tag_payload);
698 nvme_printf(ctrlr, "payload tag create failed %d\n", err);
703 * Each component must be page aligned, and individual PRP lists
704 * cannot cross a page boundary.
706 cmdsz = qpair->num_entries * sizeof(struct nvme_command);
707 cmdsz = roundup2(cmdsz, PAGE_SIZE);
708 cplsz = qpair->num_entries * sizeof(struct nvme_completion);
709 cplsz = roundup2(cplsz, PAGE_SIZE);
710 prpsz = sizeof(uint64_t) * NVME_MAX_PRP_LIST_ENTRIES;
711 prpmemsz = qpair->num_trackers * prpsz;
712 allocsz = cmdsz + cplsz + prpmemsz;
714 err = bus_dma_tag_create(bus_get_dma_tag(ctrlr->dev),
715 PAGE_SIZE, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
716 allocsz, 1, allocsz, 0, NULL, NULL, &qpair->dma_tag);
718 nvme_printf(ctrlr, "tag create failed %d\n", err);
721 bus_dma_tag_set_domain(qpair->dma_tag, qpair->domain);
723 if (bus_dmamem_alloc(qpair->dma_tag, (void **)&queuemem,
724 BUS_DMA_NOWAIT, &qpair->queuemem_map)) {
725 nvme_printf(ctrlr, "failed to alloc qpair memory\n");
729 if (bus_dmamap_load(qpair->dma_tag, qpair->queuemem_map,
730 queuemem, allocsz, nvme_single_map, &queuemem_phys, 0) != 0) {
731 nvme_printf(ctrlr, "failed to load qpair memory\n");
732 bus_dmamem_free(qpair->dma_tag, qpair->cmd,
733 qpair->queuemem_map);
738 qpair->num_intr_handler_calls = 0;
739 qpair->num_retries = 0;
740 qpair->num_failures = 0;
741 qpair->cmd = (struct nvme_command *)queuemem;
742 qpair->cpl = (struct nvme_completion *)(queuemem + cmdsz);
743 prpmem = (uint8_t *)(queuemem + cmdsz + cplsz);
744 qpair->cmd_bus_addr = queuemem_phys;
745 qpair->cpl_bus_addr = queuemem_phys + cmdsz;
746 prpmem_phys = queuemem_phys + cmdsz + cplsz;
749 * Calcuate the stride of the doorbell register. Many emulators set this
750 * value to correspond to a cache line. However, some hardware has set
751 * it to various small values.
753 qpair->sq_tdbl_off = nvme_mmio_offsetof(doorbell[0]) +
754 (qpair->id << (ctrlr->dstrd + 1));
755 qpair->cq_hdbl_off = nvme_mmio_offsetof(doorbell[0]) +
756 (qpair->id << (ctrlr->dstrd + 1)) + (1 << ctrlr->dstrd);
758 TAILQ_INIT(&qpair->free_tr);
759 TAILQ_INIT(&qpair->outstanding_tr);
760 STAILQ_INIT(&qpair->queued_req);
762 list_phys = prpmem_phys;
764 for (i = 0; i < qpair->num_trackers; i++) {
766 if (list_phys + prpsz > prpmem_phys + prpmemsz) {
767 qpair->num_trackers = i;
772 * Make sure that the PRP list for this tracker doesn't
773 * overflow to another page.
775 if (trunc_page(list_phys) !=
776 trunc_page(list_phys + prpsz - 1)) {
777 list_phys = roundup2(list_phys, PAGE_SIZE);
779 (uint8_t *)roundup2((uintptr_t)prp_list, PAGE_SIZE);
782 tr = malloc_domainset(sizeof(*tr), M_NVME,
783 DOMAINSET_PREF(qpair->domain), M_ZERO | M_WAITOK);
784 bus_dmamap_create(qpair->dma_tag_payload, 0,
785 &tr->payload_dma_map);
786 callout_init(&tr->timer, 1);
789 tr->prp = (uint64_t *)prp_list;
790 tr->prp_bus_addr = list_phys;
791 TAILQ_INSERT_HEAD(&qpair->free_tr, tr, tailq);
796 if (qpair->num_trackers == 0) {
797 nvme_printf(ctrlr, "failed to allocate enough trackers\n");
801 qpair->act_tr = malloc_domainset(sizeof(struct nvme_tracker *) *
802 qpair->num_entries, M_NVME, DOMAINSET_PREF(qpair->domain),
807 nvme_qpair_destroy(qpair);
812 nvme_qpair_destroy(struct nvme_qpair *qpair)
814 struct nvme_tracker *tr;
817 bus_teardown_intr(qpair->ctrlr->dev, qpair->res, qpair->tag);
822 free_domain(qpair->act_tr, M_NVME);
823 qpair->act_tr = NULL;
826 while (!TAILQ_EMPTY(&qpair->free_tr)) {
827 tr = TAILQ_FIRST(&qpair->free_tr);
828 TAILQ_REMOVE(&qpair->free_tr, tr, tailq);
829 bus_dmamap_destroy(qpair->dma_tag_payload,
830 tr->payload_dma_map);
831 free_domain(tr, M_NVME);
834 if (qpair->cmd != NULL) {
835 bus_dmamap_unload(qpair->dma_tag, qpair->queuemem_map);
836 bus_dmamem_free(qpair->dma_tag, qpair->cmd,
837 qpair->queuemem_map);
841 if (qpair->dma_tag) {
842 bus_dma_tag_destroy(qpair->dma_tag);
843 qpair->dma_tag = NULL;
846 if (qpair->dma_tag_payload) {
847 bus_dma_tag_destroy(qpair->dma_tag_payload);
848 qpair->dma_tag_payload = NULL;
851 if (mtx_initialized(&qpair->lock))
852 mtx_destroy(&qpair->lock);
855 bus_release_resource(qpair->ctrlr->dev, SYS_RES_IRQ,
856 rman_get_rid(qpair->res), qpair->res);
862 nvme_admin_qpair_abort_aers(struct nvme_qpair *qpair)
864 struct nvme_tracker *tr;
866 tr = TAILQ_FIRST(&qpair->outstanding_tr);
868 if (tr->req->cmd.opc == NVME_OPC_ASYNC_EVENT_REQUEST) {
869 nvme_qpair_manual_complete_tracker(tr,
870 NVME_SCT_GENERIC, NVME_SC_ABORTED_SQ_DELETION, 0,
872 tr = TAILQ_FIRST(&qpair->outstanding_tr);
874 tr = TAILQ_NEXT(tr, tailq);
880 nvme_admin_qpair_destroy(struct nvme_qpair *qpair)
883 nvme_admin_qpair_abort_aers(qpair);
884 nvme_qpair_destroy(qpair);
888 nvme_io_qpair_destroy(struct nvme_qpair *qpair)
891 nvme_qpair_destroy(qpair);
895 nvme_abort_complete(void *arg, const struct nvme_completion *status)
897 struct nvme_tracker *tr = arg;
900 * If cdw0 == 1, the controller was not able to abort the command
901 * we requested. We still need to check the active tracker array,
902 * to cover race where I/O timed out at same time controller was
903 * completing the I/O.
905 if (status->cdw0 == 1 && tr->qpair->act_tr[tr->cid] != NULL) {
907 * An I/O has timed out, and the controller was unable to
908 * abort it for some reason. Construct a fake completion
909 * status, and then complete the I/O's tracker manually.
911 nvme_printf(tr->qpair->ctrlr,
912 "abort command failed, aborting command manually\n");
913 nvme_qpair_manual_complete_tracker(tr,
914 NVME_SCT_GENERIC, NVME_SC_ABORTED_BY_REQUEST, 0, ERROR_PRINT_ALL);
919 nvme_timeout(void *arg)
921 struct nvme_tracker *tr = arg;
922 struct nvme_qpair *qpair = tr->qpair;
923 struct nvme_controller *ctrlr = qpair->ctrlr;
928 * Read csts to get value of cfs - controller fatal status.
929 * If no fatal status, try to call the completion routine, and
930 * if completes transactions, report a missed interrupt and
931 * return (this may need to be rate limited). Otherwise, if
932 * aborts are enabled and the controller is not reporting
933 * fatal status, abort the command. Otherwise, just reset the
934 * controller and hope for the best.
936 csts = nvme_mmio_read_4(ctrlr, csts);
937 cfs = (csts >> NVME_CSTS_REG_CFS_SHIFT) & NVME_CSTS_REG_CFS_MASK;
938 if (cfs == 0 && nvme_qpair_process_completions(qpair)) {
939 nvme_printf(ctrlr, "Missing interrupt\n");
942 if (ctrlr->enable_aborts && cfs == 0) {
943 nvme_printf(ctrlr, "Aborting command due to a timeout.\n");
944 nvme_ctrlr_cmd_abort(ctrlr, tr->cid, qpair->id,
945 nvme_abort_complete, tr);
947 nvme_printf(ctrlr, "Resetting controller due to a timeout%s.\n",
948 (csts == 0xffffffff) ? " and possible hot unplug" :
949 (cfs ? " and fatal error status" : ""));
950 nvme_ctrlr_reset(ctrlr);
955 nvme_qpair_submit_tracker(struct nvme_qpair *qpair, struct nvme_tracker *tr)
957 struct nvme_request *req;
958 struct nvme_controller *ctrlr;
961 mtx_assert(&qpair->lock, MA_OWNED);
964 req->cmd.cid = tr->cid;
965 qpair->act_tr[tr->cid] = tr;
966 ctrlr = qpair->ctrlr;
969 if (req->cb_fn == nvme_completion_poll_cb)
972 timeout = ctrlr->timeout_period * hz;
973 callout_reset_on(&tr->timer, timeout, nvme_timeout, tr,
977 /* Copy the command from the tracker to the submission queue. */
978 memcpy(&qpair->cmd[qpair->sq_tail], &req->cmd, sizeof(req->cmd));
980 if (++qpair->sq_tail == qpair->num_entries)
983 bus_dmamap_sync(qpair->dma_tag, qpair->queuemem_map,
984 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
987 * powerpc's bus_dmamap_sync() already includes a heavyweight sync, but
993 bus_space_write_4(qpair->ctrlr->bus_tag, qpair->ctrlr->bus_handle,
994 qpair->sq_tdbl_off, qpair->sq_tail);
999 nvme_payload_map(void *arg, bus_dma_segment_t *seg, int nseg, int error)
1001 struct nvme_tracker *tr = arg;
1005 * If the mapping operation failed, return immediately. The caller
1006 * is responsible for detecting the error status and failing the
1010 nvme_printf(tr->qpair->ctrlr,
1011 "nvme_payload_map err %d\n", error);
1016 * Note that we specified PAGE_SIZE for alignment and max
1017 * segment size when creating the bus dma tags. So here
1018 * we can safely just transfer each segment to its
1019 * associated PRP entry.
1021 tr->req->cmd.prp1 = htole64(seg[0].ds_addr);
1024 tr->req->cmd.prp2 = htole64(seg[1].ds_addr);
1025 } else if (nseg > 2) {
1027 tr->req->cmd.prp2 = htole64((uint64_t)tr->prp_bus_addr);
1028 while (cur_nseg < nseg) {
1029 tr->prp[cur_nseg-1] =
1030 htole64((uint64_t)seg[cur_nseg].ds_addr);
1035 * prp2 should not be used by the controller
1036 * since there is only one segment, but set
1037 * to 0 just to be safe.
1039 tr->req->cmd.prp2 = 0;
1042 bus_dmamap_sync(tr->qpair->dma_tag_payload, tr->payload_dma_map,
1043 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1044 nvme_qpair_submit_tracker(tr->qpair, tr);
1048 _nvme_qpair_submit_request(struct nvme_qpair *qpair, struct nvme_request *req)
1050 struct nvme_tracker *tr;
1053 mtx_assert(&qpair->lock, MA_OWNED);
1055 tr = TAILQ_FIRST(&qpair->free_tr);
1058 if (tr == NULL || !qpair->is_enabled) {
1060 * No tracker is available, or the qpair is disabled due to
1061 * an in-progress controller-level reset or controller
1065 if (qpair->ctrlr->is_failed) {
1067 * The controller has failed. Post the request to a
1068 * task where it will be aborted, so that we do not
1069 * invoke the request's callback in the context
1070 * of the submission.
1072 nvme_ctrlr_post_failed_request(qpair->ctrlr, req);
1075 * Put the request on the qpair's request queue to be
1076 * processed when a tracker frees up via a command
1077 * completion or when the controller reset is
1080 STAILQ_INSERT_TAIL(&qpair->queued_req, req, stailq);
1085 TAILQ_REMOVE(&qpair->free_tr, tr, tailq);
1086 TAILQ_INSERT_TAIL(&qpair->outstanding_tr, tr, tailq);
1089 switch (req->type) {
1090 case NVME_REQUEST_VADDR:
1091 KASSERT(req->payload_size <= qpair->ctrlr->max_xfer_size,
1092 ("payload_size (%d) exceeds max_xfer_size (%d)\n",
1093 req->payload_size, qpair->ctrlr->max_xfer_size));
1094 err = bus_dmamap_load(tr->qpair->dma_tag_payload,
1095 tr->payload_dma_map, req->u.payload, req->payload_size,
1096 nvme_payload_map, tr, 0);
1098 nvme_printf(qpair->ctrlr,
1099 "bus_dmamap_load returned 0x%x!\n", err);
1101 case NVME_REQUEST_NULL:
1102 nvme_qpair_submit_tracker(tr->qpair, tr);
1104 case NVME_REQUEST_BIO:
1105 KASSERT(req->u.bio->bio_bcount <= qpair->ctrlr->max_xfer_size,
1106 ("bio->bio_bcount (%jd) exceeds max_xfer_size (%d)\n",
1107 (intmax_t)req->u.bio->bio_bcount,
1108 qpair->ctrlr->max_xfer_size));
1109 err = bus_dmamap_load_bio(tr->qpair->dma_tag_payload,
1110 tr->payload_dma_map, req->u.bio, nvme_payload_map, tr, 0);
1112 nvme_printf(qpair->ctrlr,
1113 "bus_dmamap_load_bio returned 0x%x!\n", err);
1115 case NVME_REQUEST_CCB:
1116 err = bus_dmamap_load_ccb(tr->qpair->dma_tag_payload,
1117 tr->payload_dma_map, req->u.payload,
1118 nvme_payload_map, tr, 0);
1120 nvme_printf(qpair->ctrlr,
1121 "bus_dmamap_load_ccb returned 0x%x!\n", err);
1124 panic("unknown nvme request type 0x%x\n", req->type);
1130 * The dmamap operation failed, so we manually fail the
1131 * tracker here with DATA_TRANSFER_ERROR status.
1133 * nvme_qpair_manual_complete_tracker must not be called
1134 * with the qpair lock held.
1136 mtx_unlock(&qpair->lock);
1137 nvme_qpair_manual_complete_tracker(tr, NVME_SCT_GENERIC,
1138 NVME_SC_DATA_TRANSFER_ERROR, DO_NOT_RETRY, ERROR_PRINT_ALL);
1139 mtx_lock(&qpair->lock);
1144 nvme_qpair_submit_request(struct nvme_qpair *qpair, struct nvme_request *req)
1147 mtx_lock(&qpair->lock);
1148 _nvme_qpair_submit_request(qpair, req);
1149 mtx_unlock(&qpair->lock);
1153 nvme_qpair_enable(struct nvme_qpair *qpair)
1156 qpair->is_enabled = true;
1160 nvme_qpair_reset(struct nvme_qpair *qpair)
1163 qpair->sq_head = qpair->sq_tail = qpair->cq_head = 0;
1166 * First time through the completion queue, HW will set phase
1167 * bit on completions to 1. So set this to 1 here, indicating
1168 * we're looking for a 1 to know which entries have completed.
1169 * we'll toggle the bit each time when the completion queue
1174 memset(qpair->cmd, 0,
1175 qpair->num_entries * sizeof(struct nvme_command));
1176 memset(qpair->cpl, 0,
1177 qpair->num_entries * sizeof(struct nvme_completion));
1181 nvme_admin_qpair_enable(struct nvme_qpair *qpair)
1183 struct nvme_tracker *tr;
1184 struct nvme_tracker *tr_temp;
1187 * Manually abort each outstanding admin command. Do not retry
1188 * admin commands found here, since they will be left over from
1189 * a controller reset and its likely the context in which the
1190 * command was issued no longer applies.
1192 TAILQ_FOREACH_SAFE(tr, &qpair->outstanding_tr, tailq, tr_temp) {
1193 nvme_printf(qpair->ctrlr,
1194 "aborting outstanding admin command\n");
1195 nvme_qpair_manual_complete_tracker(tr, NVME_SCT_GENERIC,
1196 NVME_SC_ABORTED_BY_REQUEST, DO_NOT_RETRY, ERROR_PRINT_ALL);
1199 nvme_qpair_enable(qpair);
1203 nvme_io_qpair_enable(struct nvme_qpair *qpair)
1205 STAILQ_HEAD(, nvme_request) temp;
1206 struct nvme_tracker *tr;
1207 struct nvme_tracker *tr_temp;
1208 struct nvme_request *req;
1211 * Manually abort each outstanding I/O. This normally results in a
1212 * retry, unless the retry count on the associated request has
1213 * reached its limit.
1215 TAILQ_FOREACH_SAFE(tr, &qpair->outstanding_tr, tailq, tr_temp) {
1216 nvme_printf(qpair->ctrlr, "aborting outstanding i/o\n");
1217 nvme_qpair_manual_complete_tracker(tr, NVME_SCT_GENERIC,
1218 NVME_SC_ABORTED_BY_REQUEST, 0, ERROR_PRINT_NO_RETRY);
1221 mtx_lock(&qpair->lock);
1223 nvme_qpair_enable(qpair);
1226 STAILQ_SWAP(&qpair->queued_req, &temp, nvme_request);
1228 while (!STAILQ_EMPTY(&temp)) {
1229 req = STAILQ_FIRST(&temp);
1230 STAILQ_REMOVE_HEAD(&temp, stailq);
1231 nvme_printf(qpair->ctrlr, "resubmitting queued i/o\n");
1232 nvme_qpair_print_command(qpair, &req->cmd);
1233 _nvme_qpair_submit_request(qpair, req);
1236 mtx_unlock(&qpair->lock);
1240 nvme_qpair_disable(struct nvme_qpair *qpair)
1242 struct nvme_tracker *tr;
1244 qpair->is_enabled = false;
1245 mtx_lock(&qpair->lock);
1246 TAILQ_FOREACH(tr, &qpair->outstanding_tr, tailq)
1247 callout_stop(&tr->timer);
1248 mtx_unlock(&qpair->lock);
1252 nvme_admin_qpair_disable(struct nvme_qpair *qpair)
1255 nvme_qpair_disable(qpair);
1256 nvme_admin_qpair_abort_aers(qpair);
1260 nvme_io_qpair_disable(struct nvme_qpair *qpair)
1263 nvme_qpair_disable(qpair);
1267 nvme_qpair_fail(struct nvme_qpair *qpair)
1269 struct nvme_tracker *tr;
1270 struct nvme_request *req;
1272 if (!mtx_initialized(&qpair->lock))
1275 mtx_lock(&qpair->lock);
1277 while (!STAILQ_EMPTY(&qpair->queued_req)) {
1278 req = STAILQ_FIRST(&qpair->queued_req);
1279 STAILQ_REMOVE_HEAD(&qpair->queued_req, stailq);
1280 nvme_printf(qpair->ctrlr, "failing queued i/o\n");
1281 mtx_unlock(&qpair->lock);
1282 nvme_qpair_manual_complete_request(qpair, req, NVME_SCT_GENERIC,
1283 NVME_SC_ABORTED_BY_REQUEST);
1284 mtx_lock(&qpair->lock);
1287 /* Manually abort each outstanding I/O. */
1288 while (!TAILQ_EMPTY(&qpair->outstanding_tr)) {
1289 tr = TAILQ_FIRST(&qpair->outstanding_tr);
1291 * Do not remove the tracker. The abort_tracker path will
1294 nvme_printf(qpair->ctrlr, "failing outstanding i/o\n");
1295 mtx_unlock(&qpair->lock);
1296 nvme_qpair_manual_complete_tracker(tr, NVME_SCT_GENERIC,
1297 NVME_SC_ABORTED_BY_REQUEST, DO_NOT_RETRY, ERROR_PRINT_ALL);
1298 mtx_lock(&qpair->lock);
1301 mtx_unlock(&qpair->lock);