LCOV - code coverage report
Current view: top level - lib/nvme - nvme_pcie_common.c (source / functions) Hit Total Coverage
Test: ut_cov_unit.info Lines: 426 856 49.8 %
Date: 2024-07-14 09:59:02 Functions: 30 52 57.7 %

          Line data    Source code
       1             : /*   SPDX-License-Identifier: BSD-3-Clause
       2             :  *   Copyright (C) 2021 Intel Corporation. All rights reserved.
       3             :  *   Copyright (c) 2021 Mellanox Technologies LTD. All rights reserved.
       4             :  *   Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
       5             :  */
       6             : 
       7             : /*
       8             :  * NVMe over PCIe common library
       9             :  */
      10             : 
      11             : #include "spdk/stdinc.h"
      12             : #include "spdk/likely.h"
      13             : #include "spdk/string.h"
      14             : #include "nvme_internal.h"
      15             : #include "nvme_pcie_internal.h"
      16             : #include "spdk/trace.h"
      17             : 
      18             : #include "spdk_internal/trace_defs.h"
      19             : 
      20             : __thread struct nvme_pcie_ctrlr *g_thread_mmio_ctrlr = NULL;
      21             : 
      22             : static struct spdk_nvme_pcie_stat g_dummy_stat = {};
      23             : 
      24             : static void nvme_pcie_fail_request_bad_vtophys(struct spdk_nvme_qpair *qpair,
      25             :                 struct nvme_tracker *tr);
      26             : 
      27             : static inline uint64_t
      28        2093 : nvme_pcie_vtophys(struct spdk_nvme_ctrlr *ctrlr, const void *buf, uint64_t *size)
      29             : {
      30        2093 :         if (spdk_likely(ctrlr->trid.trtype == SPDK_NVME_TRANSPORT_PCIE)) {
      31        2086 :                 return spdk_vtophys(buf, size);
      32             :         } else {
      33             :                 /* vfio-user address translation with IOVA=VA mode */
      34           7 :                 return (uint64_t)(uintptr_t)buf;
      35             :         }
      36             : }
      37             : 
      38             : int
      39           6 : nvme_pcie_qpair_reset(struct spdk_nvme_qpair *qpair)
      40             : {
      41           6 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
      42             :         uint32_t i;
      43             : 
      44             :         /* all head/tail vals are set to 0 */
      45           6 :         pqpair->last_sq_tail = pqpair->sq_tail = pqpair->sq_head = pqpair->cq_head = 0;
      46             : 
      47             :         /*
      48             :          * First time through the completion queue, HW will set phase
      49             :          *  bit on completions to 1.  So set this to 1 here, indicating
      50             :          *  we're looking for a 1 to know which entries have completed.
      51             :          *  we'll toggle the bit each time when the completion queue
      52             :          *  rolls over.
      53             :          */
      54           6 :         pqpair->flags.phase = 1;
      55          46 :         for (i = 0; i < pqpair->num_entries; i++) {
      56          40 :                 pqpair->cpl[i].status.p = 0;
      57             :         }
      58             : 
      59           6 :         return 0;
      60             : }
      61             : 
      62             : static void
      63          27 : nvme_qpair_construct_tracker(struct nvme_tracker *tr, uint16_t cid, uint64_t phys_addr)
      64             : {
      65          27 :         tr->prp_sgl_bus_addr = phys_addr + offsetof(struct nvme_tracker, u.prp);
      66          27 :         tr->cid = cid;
      67          27 :         tr->req = NULL;
      68          27 : }
      69             : 
      70             : static void *
      71           4 : nvme_pcie_ctrlr_alloc_cmb(struct spdk_nvme_ctrlr *ctrlr, uint64_t size, uint64_t alignment,
      72             :                           uint64_t *phys_addr)
      73             : {
      74           4 :         struct nvme_pcie_ctrlr *pctrlr = nvme_pcie_ctrlr(ctrlr);
      75             :         uintptr_t addr;
      76             : 
      77           4 :         if (pctrlr->cmb.mem_register_addr != NULL) {
      78             :                 /* BAR is mapped for data */
      79           1 :                 return NULL;
      80             :         }
      81             : 
      82           3 :         addr = (uintptr_t)pctrlr->cmb.bar_va + pctrlr->cmb.current_offset;
      83           3 :         addr = (addr + (alignment - 1)) & ~(alignment - 1);
      84             : 
      85             :         /* CMB may only consume part of the BAR, calculate accordingly */
      86           3 :         if (addr + size > ((uintptr_t)pctrlr->cmb.bar_va + pctrlr->cmb.size)) {
      87           1 :                 SPDK_ERRLOG("Tried to allocate past valid CMB range!\n");
      88           1 :                 return NULL;
      89             :         }
      90           2 :         *phys_addr = pctrlr->cmb.bar_pa + addr - (uintptr_t)pctrlr->cmb.bar_va;
      91             : 
      92           2 :         pctrlr->cmb.current_offset = (addr + size) - (uintptr_t)pctrlr->cmb.bar_va;
      93             : 
      94           2 :         return (void *)addr;
      95             : }
      96             : 
      97             : int
      98           4 : nvme_pcie_qpair_construct(struct spdk_nvme_qpair *qpair,
      99             :                           const struct spdk_nvme_io_qpair_opts *opts)
     100             : {
     101           4 :         struct spdk_nvme_ctrlr  *ctrlr = qpair->ctrlr;
     102           4 :         struct nvme_pcie_ctrlr  *pctrlr = nvme_pcie_ctrlr(ctrlr);
     103           4 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     104             :         struct nvme_tracker     *tr;
     105             :         uint16_t                i;
     106             :         uint16_t                num_trackers;
     107           4 :         size_t                  page_align = sysconf(_SC_PAGESIZE);
     108             :         size_t                  queue_align, queue_len;
     109           4 :         uint32_t                flags = SPDK_MALLOC_DMA;
     110           4 :         uint64_t                sq_paddr = 0;
     111           4 :         uint64_t                cq_paddr = 0;
     112             : 
     113           4 :         if (opts) {
     114           2 :                 pqpair->sq_vaddr = opts->sq.vaddr;
     115           2 :                 pqpair->cq_vaddr = opts->cq.vaddr;
     116           2 :                 sq_paddr = opts->sq.paddr;
     117           2 :                 cq_paddr = opts->cq.paddr;
     118             :         }
     119             : 
     120           4 :         pqpair->retry_count = ctrlr->opts.transport_retry_count;
     121             : 
     122             :         /*
     123             :          * Limit the maximum number of completions to return per call to prevent wraparound,
     124             :          * and calculate how many trackers can be submitted at once without overflowing the
     125             :          * completion queue.
     126             :          */
     127           4 :         pqpair->max_completions_cap = pqpair->num_entries / 4;
     128           4 :         pqpair->max_completions_cap = spdk_max(pqpair->max_completions_cap, NVME_MIN_COMPLETIONS);
     129           4 :         pqpair->max_completions_cap = spdk_min(pqpair->max_completions_cap, NVME_MAX_COMPLETIONS);
     130           4 :         num_trackers = pqpair->num_entries - pqpair->max_completions_cap;
     131             : 
     132           4 :         SPDK_INFOLOG(nvme, "max_completions_cap = %" PRIu16 " num_trackers = %" PRIu16 "\n",
     133             :                      pqpair->max_completions_cap, num_trackers);
     134             : 
     135           4 :         assert(num_trackers != 0);
     136             : 
     137           4 :         pqpair->sq_in_cmb = false;
     138             : 
     139           4 :         if (nvme_qpair_is_admin_queue(&pqpair->qpair)) {
     140           1 :                 flags |= SPDK_MALLOC_SHARE;
     141             :         }
     142             : 
     143             :         /* cmd and cpl rings must be aligned on page size boundaries. */
     144           4 :         if (ctrlr->opts.use_cmb_sqs) {
     145           1 :                 pqpair->cmd = nvme_pcie_ctrlr_alloc_cmb(ctrlr, pqpair->num_entries * sizeof(struct spdk_nvme_cmd),
     146             :                                                         page_align, &pqpair->cmd_bus_addr);
     147           1 :                 if (pqpair->cmd != NULL) {
     148           1 :                         pqpair->sq_in_cmb = true;
     149             :                 }
     150             :         }
     151             : 
     152           4 :         if (pqpair->sq_in_cmb == false) {
     153           3 :                 if (pqpair->sq_vaddr) {
     154           1 :                         pqpair->cmd = pqpair->sq_vaddr;
     155             :                 } else {
     156             :                         /* To ensure physical address contiguity we make each ring occupy
     157             :                          * a single hugepage only. See MAX_IO_QUEUE_ENTRIES.
     158             :                          */
     159           2 :                         queue_len = pqpair->num_entries * sizeof(struct spdk_nvme_cmd);
     160           2 :                         queue_align = spdk_max(spdk_align32pow2(queue_len), page_align);
     161           2 :                         pqpair->cmd = spdk_zmalloc(queue_len, queue_align, NULL, SPDK_ENV_SOCKET_ID_ANY, flags);
     162           2 :                         if (pqpair->cmd == NULL) {
     163           0 :                                 SPDK_ERRLOG("alloc qpair_cmd failed\n");
     164           0 :                                 return -ENOMEM;
     165             :                         }
     166             :                 }
     167           3 :                 if (sq_paddr) {
     168           1 :                         assert(pqpair->sq_vaddr != NULL);
     169           1 :                         pqpair->cmd_bus_addr = sq_paddr;
     170             :                 } else {
     171           2 :                         pqpair->cmd_bus_addr = nvme_pcie_vtophys(ctrlr, pqpair->cmd, NULL);
     172           2 :                         if (pqpair->cmd_bus_addr == SPDK_VTOPHYS_ERROR) {
     173           0 :                                 SPDK_ERRLOG("spdk_vtophys(pqpair->cmd) failed\n");
     174           0 :                                 return -EFAULT;
     175             :                         }
     176             :                 }
     177             :         }
     178             : 
     179           4 :         if (pqpair->cq_vaddr) {
     180           2 :                 pqpair->cpl = pqpair->cq_vaddr;
     181             :         } else {
     182           2 :                 queue_len = pqpair->num_entries * sizeof(struct spdk_nvme_cpl);
     183           2 :                 queue_align = spdk_max(spdk_align32pow2(queue_len), page_align);
     184           2 :                 pqpair->cpl = spdk_zmalloc(queue_len, queue_align, NULL, SPDK_ENV_SOCKET_ID_ANY, flags);
     185           2 :                 if (pqpair->cpl == NULL) {
     186           0 :                         SPDK_ERRLOG("alloc qpair_cpl failed\n");
     187           0 :                         return -ENOMEM;
     188             :                 }
     189             :         }
     190           4 :         if (cq_paddr) {
     191           2 :                 assert(pqpair->cq_vaddr != NULL);
     192           2 :                 pqpair->cpl_bus_addr = cq_paddr;
     193             :         } else {
     194           2 :                 pqpair->cpl_bus_addr =  nvme_pcie_vtophys(ctrlr, pqpair->cpl, NULL);
     195           2 :                 if (pqpair->cpl_bus_addr == SPDK_VTOPHYS_ERROR) {
     196           0 :                         SPDK_ERRLOG("spdk_vtophys(pqpair->cpl) failed\n");
     197           0 :                         return -EFAULT;
     198             :                 }
     199             :         }
     200             : 
     201           4 :         pqpair->sq_tdbl = pctrlr->doorbell_base + (2 * qpair->id + 0) * pctrlr->doorbell_stride_u32;
     202           4 :         pqpair->cq_hdbl = pctrlr->doorbell_base + (2 * qpair->id + 1) * pctrlr->doorbell_stride_u32;
     203             : 
     204             :         /*
     205             :          * Reserve space for all of the trackers in a single allocation.
     206             :          *   struct nvme_tracker must be padded so that its size is already a power of 2.
     207             :          *   This ensures the PRP list embedded in the nvme_tracker object will not span a
     208             :          *   4KB boundary, while allowing access to trackers in tr[] via normal array indexing.
     209             :          */
     210           4 :         pqpair->tr = spdk_zmalloc(num_trackers * sizeof(*tr), sizeof(*tr), NULL,
     211             :                                   SPDK_ENV_SOCKET_ID_ANY, SPDK_MALLOC_SHARE);
     212           4 :         if (pqpair->tr == NULL) {
     213           0 :                 SPDK_ERRLOG("nvme_tr failed\n");
     214           0 :                 return -ENOMEM;
     215             :         }
     216             : 
     217           4 :         TAILQ_INIT(&pqpair->free_tr);
     218           4 :         TAILQ_INIT(&pqpair->outstanding_tr);
     219             : 
     220          31 :         for (i = 0; i < num_trackers; i++) {
     221          27 :                 tr = &pqpair->tr[i];
     222          27 :                 nvme_qpair_construct_tracker(tr, i, nvme_pcie_vtophys(ctrlr, tr, NULL));
     223          27 :                 TAILQ_INSERT_HEAD(&pqpair->free_tr, tr, tq_list);
     224             :         }
     225             : 
     226           4 :         nvme_pcie_qpair_reset(qpair);
     227             : 
     228           4 :         return 0;
     229             : }
     230             : 
     231             : int
     232           1 : nvme_pcie_ctrlr_construct_admin_qpair(struct spdk_nvme_ctrlr *ctrlr, uint16_t num_entries)
     233             : {
     234             :         struct nvme_pcie_qpair *pqpair;
     235             :         int rc;
     236             : 
     237           1 :         pqpair = spdk_zmalloc(sizeof(*pqpair), 64, NULL, SPDK_ENV_SOCKET_ID_ANY, SPDK_MALLOC_SHARE);
     238           1 :         if (pqpair == NULL) {
     239           0 :                 return -ENOMEM;
     240             :         }
     241             : 
     242           1 :         pqpair->num_entries = num_entries;
     243           1 :         pqpair->flags.delay_cmd_submit = 0;
     244           1 :         pqpair->pcie_state = NVME_PCIE_QPAIR_READY;
     245             : 
     246           1 :         ctrlr->adminq = &pqpair->qpair;
     247             : 
     248           1 :         rc = nvme_qpair_init(ctrlr->adminq,
     249             :                              0, /* qpair ID */
     250             :                              ctrlr,
     251             :                              SPDK_NVME_QPRIO_URGENT,
     252             :                              num_entries,
     253             :                              false);
     254           1 :         if (rc != 0) {
     255           0 :                 return rc;
     256             :         }
     257             : 
     258           1 :         pqpair->stat = spdk_zmalloc(sizeof(*pqpair->stat), 64, NULL, SPDK_ENV_SOCKET_ID_ANY,
     259             :                                     SPDK_MALLOC_SHARE);
     260           1 :         if (!pqpair->stat) {
     261           0 :                 SPDK_ERRLOG("Failed to allocate admin qpair statistics\n");
     262           0 :                 return -ENOMEM;
     263             :         }
     264             : 
     265           1 :         return nvme_pcie_qpair_construct(ctrlr->adminq, NULL);
     266             : }
     267             : 
     268             : /**
     269             :  * Note: the ctrlr_lock must be held when calling this function.
     270             :  */
     271             : void
     272           0 : nvme_pcie_qpair_insert_pending_admin_request(struct spdk_nvme_qpair *qpair,
     273             :                 struct nvme_request *req, struct spdk_nvme_cpl *cpl)
     274             : {
     275           0 :         struct spdk_nvme_ctrlr          *ctrlr = qpair->ctrlr;
     276           0 :         struct nvme_request             *active_req = req;
     277             :         struct spdk_nvme_ctrlr_process  *active_proc;
     278             : 
     279             :         /*
     280             :          * The admin request is from another process. Move to the per
     281             :          *  process list for that process to handle it later.
     282             :          */
     283           0 :         assert(nvme_qpair_is_admin_queue(qpair));
     284           0 :         assert(active_req->pid != getpid());
     285             : 
     286           0 :         active_proc = nvme_ctrlr_get_process(ctrlr, active_req->pid);
     287           0 :         if (active_proc) {
     288             :                 /* Save the original completion information */
     289           0 :                 memcpy(&active_req->cpl, cpl, sizeof(*cpl));
     290           0 :                 STAILQ_INSERT_TAIL(&active_proc->active_reqs, active_req, stailq);
     291             :         } else {
     292           0 :                 SPDK_ERRLOG("The owning process (pid %d) is not found. Dropping the request.\n",
     293             :                             active_req->pid);
     294           0 :                 nvme_cleanup_user_req(active_req);
     295           0 :                 nvme_free_request(active_req);
     296             :         }
     297           0 : }
     298             : 
     299             : /**
     300             :  * Note: the ctrlr_lock must be held when calling this function.
     301             :  */
     302             : void
     303           0 : nvme_pcie_qpair_complete_pending_admin_request(struct spdk_nvme_qpair *qpair)
     304             : {
     305           0 :         struct spdk_nvme_ctrlr          *ctrlr = qpair->ctrlr;
     306             :         struct nvme_request             *req, *tmp_req;
     307           0 :         pid_t                           pid = getpid();
     308             :         struct spdk_nvme_ctrlr_process  *proc;
     309             : 
     310             :         /*
     311             :          * Check whether there is any pending admin request from
     312             :          * other active processes.
     313             :          */
     314           0 :         assert(nvme_qpair_is_admin_queue(qpair));
     315             : 
     316           0 :         proc = nvme_ctrlr_get_current_process(ctrlr);
     317           0 :         if (!proc) {
     318           0 :                 SPDK_ERRLOG("the active process (pid %d) is not found for this controller.\n", pid);
     319           0 :                 assert(proc);
     320           0 :                 return;
     321             :         }
     322             : 
     323           0 :         STAILQ_FOREACH_SAFE(req, &proc->active_reqs, stailq, tmp_req) {
     324           0 :                 STAILQ_REMOVE(&proc->active_reqs, req, nvme_request, stailq);
     325             : 
     326           0 :                 assert(req->pid == pid);
     327             : 
     328           0 :                 nvme_complete_request(req->cb_fn, req->cb_arg, qpair, req, &req->cpl);
     329             :         }
     330             : }
     331             : 
     332             : int
     333           7 : nvme_pcie_ctrlr_cmd_create_io_cq(struct spdk_nvme_ctrlr *ctrlr,
     334             :                                  struct spdk_nvme_qpair *io_que, spdk_nvme_cmd_cb cb_fn,
     335             :                                  void *cb_arg)
     336             : {
     337           7 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(io_que);
     338             :         struct nvme_request *req;
     339             :         struct spdk_nvme_cmd *cmd;
     340             : 
     341           7 :         req = nvme_allocate_request_null(ctrlr->adminq, cb_fn, cb_arg);
     342           7 :         if (req == NULL) {
     343           2 :                 return -ENOMEM;
     344             :         }
     345             : 
     346           5 :         cmd = &req->cmd;
     347           5 :         cmd->opc = SPDK_NVME_OPC_CREATE_IO_CQ;
     348             : 
     349           5 :         cmd->cdw10_bits.create_io_q.qid = io_que->id;
     350           5 :         cmd->cdw10_bits.create_io_q.qsize = pqpair->num_entries - 1;
     351             : 
     352           5 :         cmd->cdw11_bits.create_io_cq.pc = 1;
     353           5 :         cmd->dptr.prp.prp1 = pqpair->cpl_bus_addr;
     354             : 
     355           5 :         return nvme_ctrlr_submit_admin_request(ctrlr, req);
     356             : }
     357             : 
     358             : int
     359           5 : nvme_pcie_ctrlr_cmd_create_io_sq(struct spdk_nvme_ctrlr *ctrlr,
     360             :                                  struct spdk_nvme_qpair *io_que, spdk_nvme_cmd_cb cb_fn, void *cb_arg)
     361             : {
     362           5 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(io_que);
     363             :         struct nvme_request *req;
     364             :         struct spdk_nvme_cmd *cmd;
     365             : 
     366           5 :         req = nvme_allocate_request_null(ctrlr->adminq, cb_fn, cb_arg);
     367           5 :         if (req == NULL) {
     368           1 :                 return -ENOMEM;
     369             :         }
     370             : 
     371           4 :         cmd = &req->cmd;
     372           4 :         cmd->opc = SPDK_NVME_OPC_CREATE_IO_SQ;
     373             : 
     374           4 :         cmd->cdw10_bits.create_io_q.qid = io_que->id;
     375           4 :         cmd->cdw10_bits.create_io_q.qsize = pqpair->num_entries - 1;
     376           4 :         cmd->cdw11_bits.create_io_sq.pc = 1;
     377           4 :         cmd->cdw11_bits.create_io_sq.qprio = io_que->qprio;
     378           4 :         cmd->cdw11_bits.create_io_sq.cqid = io_que->id;
     379           4 :         cmd->dptr.prp.prp1 = pqpair->cmd_bus_addr;
     380             : 
     381           4 :         return nvme_ctrlr_submit_admin_request(ctrlr, req);
     382             : }
     383             : 
     384             : int
     385           3 : nvme_pcie_ctrlr_cmd_delete_io_cq(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair,
     386             :                                  spdk_nvme_cmd_cb cb_fn, void *cb_arg)
     387             : {
     388             :         struct nvme_request *req;
     389             :         struct spdk_nvme_cmd *cmd;
     390             : 
     391           3 :         req = nvme_allocate_request_null(ctrlr->adminq, cb_fn, cb_arg);
     392           3 :         if (req == NULL) {
     393           1 :                 return -ENOMEM;
     394             :         }
     395             : 
     396           2 :         cmd = &req->cmd;
     397           2 :         cmd->opc = SPDK_NVME_OPC_DELETE_IO_CQ;
     398           2 :         cmd->cdw10_bits.delete_io_q.qid = qpair->id;
     399             : 
     400           2 :         return nvme_ctrlr_submit_admin_request(ctrlr, req);
     401             : }
     402             : 
     403             : int
     404           2 : nvme_pcie_ctrlr_cmd_delete_io_sq(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair,
     405             :                                  spdk_nvme_cmd_cb cb_fn, void *cb_arg)
     406             : {
     407             :         struct nvme_request *req;
     408             :         struct spdk_nvme_cmd *cmd;
     409             : 
     410           2 :         req = nvme_allocate_request_null(ctrlr->adminq, cb_fn, cb_arg);
     411           2 :         if (req == NULL) {
     412           1 :                 return -ENOMEM;
     413             :         }
     414             : 
     415           1 :         cmd = &req->cmd;
     416           1 :         cmd->opc = SPDK_NVME_OPC_DELETE_IO_SQ;
     417           1 :         cmd->cdw10_bits.delete_io_q.qid = qpair->id;
     418             : 
     419           1 :         return nvme_ctrlr_submit_admin_request(ctrlr, req);
     420             : }
     421             : 
     422             : static void
     423           1 : nvme_completion_sq_error_delete_cq_cb(void *arg, const struct spdk_nvme_cpl *cpl)
     424             : {
     425           1 :         struct spdk_nvme_qpair *qpair = arg;
     426           1 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     427             : 
     428           1 :         if (spdk_nvme_cpl_is_error(cpl)) {
     429           0 :                 SPDK_ERRLOG("delete_io_cq failed!\n");
     430             :         }
     431             : 
     432           1 :         pqpair->pcie_state = NVME_PCIE_QPAIR_FAILED;
     433           1 : }
     434             : 
     435             : static void
     436           3 : nvme_completion_create_sq_cb(void *arg, const struct spdk_nvme_cpl *cpl)
     437             : {
     438           3 :         struct spdk_nvme_qpair *qpair = arg;
     439           3 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     440           3 :         struct spdk_nvme_ctrlr  *ctrlr = qpair->ctrlr;
     441           3 :         struct nvme_pcie_ctrlr  *pctrlr = nvme_pcie_ctrlr(ctrlr);
     442             :         int rc;
     443             : 
     444           3 :         if (pqpair->flags.defer_destruction) {
     445             :                 /* This qpair was deleted by the application while the
     446             :                  * connection was still in progress.  We had to wait
     447             :                  * to free the qpair resources until this outstanding
     448             :                  * command was completed.  Now that we have the completion
     449             :                  * free it now.
     450             :                  */
     451           0 :                 nvme_pcie_qpair_destroy(qpair);
     452           0 :                 return;
     453             :         }
     454             : 
     455           3 :         if (spdk_nvme_cpl_is_error(cpl)) {
     456           1 :                 SPDK_ERRLOG("nvme_create_io_sq failed, deleting cq!\n");
     457           1 :                 rc = nvme_pcie_ctrlr_cmd_delete_io_cq(qpair->ctrlr, qpair, nvme_completion_sq_error_delete_cq_cb,
     458             :                                                       qpair);
     459           1 :                 if (rc != 0) {
     460           0 :                         SPDK_ERRLOG("Failed to send request to delete_io_cq with rc=%d\n", rc);
     461           0 :                         pqpair->pcie_state = NVME_PCIE_QPAIR_FAILED;
     462             :                 }
     463           1 :                 return;
     464             :         }
     465           2 :         pqpair->pcie_state = NVME_PCIE_QPAIR_READY;
     466           2 :         if (ctrlr->shadow_doorbell) {
     467           1 :                 pqpair->shadow_doorbell.sq_tdbl = ctrlr->shadow_doorbell + (2 * qpair->id + 0) *
     468           1 :                                                   pctrlr->doorbell_stride_u32;
     469           1 :                 pqpair->shadow_doorbell.cq_hdbl = ctrlr->shadow_doorbell + (2 * qpair->id + 1) *
     470           1 :                                                   pctrlr->doorbell_stride_u32;
     471           1 :                 pqpair->shadow_doorbell.sq_eventidx = ctrlr->eventidx + (2 * qpair->id + 0) *
     472           1 :                                                       pctrlr->doorbell_stride_u32;
     473           1 :                 pqpair->shadow_doorbell.cq_eventidx = ctrlr->eventidx + (2 * qpair->id + 1) *
     474           1 :                                                       pctrlr->doorbell_stride_u32;
     475           1 :                 pqpair->flags.has_shadow_doorbell = 1;
     476             :         } else {
     477           1 :                 pqpair->flags.has_shadow_doorbell = 0;
     478             :         }
     479           2 :         nvme_pcie_qpair_reset(qpair);
     480             : 
     481             : }
     482             : 
     483             : static void
     484           4 : nvme_completion_create_cq_cb(void *arg, const struct spdk_nvme_cpl *cpl)
     485             : {
     486           4 :         struct spdk_nvme_qpair *qpair = arg;
     487           4 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     488             :         int rc;
     489             : 
     490           4 :         if (pqpair->flags.defer_destruction) {
     491             :                 /* This qpair was deleted by the application while the
     492             :                  * connection was still in progress.  We had to wait
     493             :                  * to free the qpair resources until this outstanding
     494             :                  * command was completed.  Now that we have the completion
     495             :                  * free it now.
     496             :                  */
     497           0 :                 nvme_pcie_qpair_destroy(qpair);
     498           0 :                 return;
     499             :         }
     500             : 
     501           4 :         if (spdk_nvme_cpl_is_error(cpl)) {
     502           1 :                 pqpair->pcie_state = NVME_PCIE_QPAIR_FAILED;
     503           1 :                 SPDK_ERRLOG("nvme_create_io_cq failed!\n");
     504           1 :                 return;
     505             :         }
     506             : 
     507           3 :         rc = nvme_pcie_ctrlr_cmd_create_io_sq(qpair->ctrlr, qpair, nvme_completion_create_sq_cb, qpair);
     508             : 
     509           3 :         if (rc != 0) {
     510           0 :                 SPDK_ERRLOG("Failed to send request to create_io_sq, deleting cq!\n");
     511           0 :                 rc = nvme_pcie_ctrlr_cmd_delete_io_cq(qpair->ctrlr, qpair, nvme_completion_sq_error_delete_cq_cb,
     512             :                                                       qpair);
     513           0 :                 if (rc != 0) {
     514           0 :                         SPDK_ERRLOG("Failed to send request to delete_io_cq with rc=%d\n", rc);
     515           0 :                         pqpair->pcie_state = NVME_PCIE_QPAIR_FAILED;
     516             :                 }
     517           0 :                 return;
     518             :         }
     519           3 :         pqpair->pcie_state = NVME_PCIE_QPAIR_WAIT_FOR_SQ;
     520             : }
     521             : 
     522             : static int
     523           5 : _nvme_pcie_ctrlr_create_io_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair,
     524             :                                  uint16_t qid)
     525             : {
     526           5 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     527             :         int     rc;
     528             : 
     529             :         /* Statistics may already be allocated in the case of controller reset */
     530           5 :         if (qpair->poll_group) {
     531           5 :                 struct nvme_pcie_poll_group *group = SPDK_CONTAINEROF(qpair->poll_group,
     532             :                                                      struct nvme_pcie_poll_group, group);
     533             : 
     534           5 :                 pqpair->stat = &group->stats;
     535           5 :                 pqpair->shared_stats = true;
     536             :         } else {
     537           0 :                 if (pqpair->stat == NULL) {
     538           0 :                         pqpair->stat = calloc(1, sizeof(*pqpair->stat));
     539           0 :                         if (!pqpair->stat) {
     540           0 :                                 SPDK_ERRLOG("Failed to allocate qpair statistics\n");
     541           0 :                                 nvme_qpair_set_state(qpair, NVME_QPAIR_DISCONNECTED);
     542           0 :                                 return -ENOMEM;
     543             :                         }
     544             :                 }
     545             :         }
     546             : 
     547           5 :         rc = nvme_pcie_ctrlr_cmd_create_io_cq(ctrlr, qpair, nvme_completion_create_cq_cb, qpair);
     548             : 
     549           5 :         if (rc != 0) {
     550           1 :                 SPDK_ERRLOG("Failed to send request to create_io_cq\n");
     551           1 :                 nvme_qpair_set_state(qpair, NVME_QPAIR_DISCONNECTED);
     552           1 :                 return rc;
     553             :         }
     554           4 :         pqpair->pcie_state = NVME_PCIE_QPAIR_WAIT_FOR_CQ;
     555           4 :         return 0;
     556             : }
     557             : 
     558             : int
     559           5 : nvme_pcie_ctrlr_connect_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair)
     560             : {
     561           5 :         int rc = 0;
     562             : 
     563           5 :         if (!nvme_qpair_is_admin_queue(qpair)) {
     564           5 :                 rc = _nvme_pcie_ctrlr_create_io_qpair(ctrlr, qpair, qpair->id);
     565             :         } else {
     566           0 :                 nvme_qpair_set_state(qpair, NVME_QPAIR_CONNECTED);
     567             :         }
     568             : 
     569           5 :         return rc;
     570             : }
     571             : 
     572             : void
     573           0 : nvme_pcie_ctrlr_disconnect_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair)
     574             : {
     575           0 :         if (!nvme_qpair_is_admin_queue(qpair) || !ctrlr->is_disconnecting) {
     576           0 :                 nvme_transport_ctrlr_disconnect_qpair_done(qpair);
     577             :         } else {
     578             :                 /* If this function is called for the admin qpair via spdk_nvme_ctrlr_reset()
     579             :                  * or spdk_nvme_ctrlr_disconnect(), initiate a Controller Level Reset.
     580             :                  * Then we can abort trackers safely because the Controller Level Reset deletes
     581             :                  * all I/O SQ/CQs.
     582             :                  */
     583           0 :                 nvme_ctrlr_disable(ctrlr);
     584             :         }
     585           0 : }
     586             : 
     587             : /* Used when dst points to MMIO (i.e. CMB) in a virtual machine - in these cases we must
     588             :  * not use wide instructions because QEMU will not emulate such instructions to MMIO space.
     589             :  * So this function ensures we only copy 8 bytes at a time.
     590             :  */
     591             : static inline void
     592           0 : nvme_pcie_copy_command_mmio(struct spdk_nvme_cmd *dst, const struct spdk_nvme_cmd *src)
     593             : {
     594           0 :         uint64_t *dst64 = (uint64_t *)dst;
     595           0 :         const uint64_t *src64 = (const uint64_t *)src;
     596             :         uint32_t i;
     597             : 
     598           0 :         for (i = 0; i < sizeof(*dst) / 8; i++) {
     599           0 :                 dst64[i] = src64[i];
     600             :         }
     601           0 : }
     602             : 
     603             : static inline void
     604           0 : nvme_pcie_copy_command(struct spdk_nvme_cmd *dst, const struct spdk_nvme_cmd *src)
     605             : {
     606             :         /* dst and src are known to be non-overlapping and 64-byte aligned. */
     607             : #if defined(__SSE2__)
     608           0 :         __m128i *d128 = (__m128i *)dst;
     609           0 :         const __m128i *s128 = (const __m128i *)src;
     610             : 
     611           0 :         _mm_stream_si128(&d128[0], _mm_load_si128(&s128[0]));
     612           0 :         _mm_stream_si128(&d128[1], _mm_load_si128(&s128[1]));
     613           0 :         _mm_stream_si128(&d128[2], _mm_load_si128(&s128[2]));
     614           0 :         _mm_stream_si128(&d128[3], _mm_load_si128(&s128[3]));
     615             : #else
     616             :         *dst = *src;
     617             : #endif
     618           0 : }
     619             : 
     620             : void
     621           0 : nvme_pcie_qpair_submit_tracker(struct spdk_nvme_qpair *qpair, struct nvme_tracker *tr)
     622             : {
     623             :         struct nvme_request     *req;
     624           0 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     625           0 :         struct spdk_nvme_ctrlr  *ctrlr = qpair->ctrlr;
     626             : 
     627           0 :         req = tr->req;
     628           0 :         assert(req != NULL);
     629             : 
     630           0 :         spdk_trace_record(TRACE_NVME_PCIE_SUBMIT, qpair->id, 0, (uintptr_t)req, req->cb_arg,
     631             :                           (uint32_t)req->cmd.cid, (uint32_t)req->cmd.opc,
     632             :                           req->cmd.cdw10, req->cmd.cdw11, req->cmd.cdw12);
     633             : 
     634           0 :         if (req->cmd.fuse) {
     635             :                 /*
     636             :                  * Keep track of the fuse operation sequence so that we ring the doorbell only
     637             :                  * after the second fuse is submitted.
     638             :                  */
     639           0 :                 qpair->last_fuse = req->cmd.fuse;
     640             :         }
     641             : 
     642             :         /* Don't use wide instructions to copy NVMe command, this is limited by QEMU
     643             :          * virtual NVMe controller, the maximum access width is 8 Bytes for one time.
     644             :          */
     645           0 :         if (spdk_unlikely((ctrlr->quirks & NVME_QUIRK_MAXIMUM_PCI_ACCESS_WIDTH) && pqpair->sq_in_cmb)) {
     646           0 :                 nvme_pcie_copy_command_mmio(&pqpair->cmd[pqpair->sq_tail], &req->cmd);
     647             :         } else {
     648             :                 /* Copy the command from the tracker to the submission queue. */
     649           0 :                 nvme_pcie_copy_command(&pqpair->cmd[pqpair->sq_tail], &req->cmd);
     650             :         }
     651             : 
     652           0 :         if (spdk_unlikely(++pqpair->sq_tail == pqpair->num_entries)) {
     653           0 :                 pqpair->sq_tail = 0;
     654             :         }
     655             : 
     656           0 :         if (spdk_unlikely(pqpair->sq_tail == pqpair->sq_head)) {
     657           0 :                 SPDK_ERRLOG("sq_tail is passing sq_head!\n");
     658             :         }
     659             : 
     660           0 :         if (!pqpair->flags.delay_cmd_submit) {
     661           0 :                 nvme_pcie_qpair_ring_sq_doorbell(qpair);
     662             :         }
     663           0 : }
     664             : 
     665             : void
     666           0 : nvme_pcie_qpair_complete_tracker(struct spdk_nvme_qpair *qpair, struct nvme_tracker *tr,
     667             :                                  struct spdk_nvme_cpl *cpl, bool print_on_error)
     668             : {
     669           0 :         struct nvme_pcie_qpair          *pqpair = nvme_pcie_qpair(qpair);
     670             :         struct nvme_request             *req;
     671             :         bool                            retry, error;
     672             :         bool                            print_error;
     673             : 
     674           0 :         req = tr->req;
     675             : 
     676           0 :         spdk_trace_record(TRACE_NVME_PCIE_COMPLETE, qpair->id, 0, (uintptr_t)req, req->cb_arg,
     677             :                           (uint32_t)req->cmd.cid, (uint32_t)cpl->status_raw);
     678             : 
     679           0 :         assert(req != NULL);
     680             : 
     681           0 :         error = spdk_nvme_cpl_is_error(cpl);
     682           0 :         retry = error && nvme_completion_is_retry(cpl) &&
     683           0 :                 req->retries < pqpair->retry_count;
     684           0 :         print_error = error && print_on_error && !qpair->ctrlr->opts.disable_error_logging;
     685             : 
     686           0 :         if (print_error) {
     687           0 :                 spdk_nvme_qpair_print_command(qpair, &req->cmd);
     688             :         }
     689             : 
     690           0 :         if (print_error || SPDK_DEBUGLOG_FLAG_ENABLED("nvme")) {
     691           0 :                 spdk_nvme_qpair_print_completion(qpair, cpl);
     692             :         }
     693             : 
     694           0 :         assert(cpl->cid == req->cmd.cid);
     695             : 
     696           0 :         if (retry) {
     697           0 :                 req->retries++;
     698           0 :                 nvme_pcie_qpair_submit_tracker(qpair, tr);
     699             :         } else {
     700           0 :                 TAILQ_REMOVE(&pqpair->outstanding_tr, tr, tq_list);
     701             : 
     702             :                 /* Only check admin requests from different processes. */
     703           0 :                 if (nvme_qpair_is_admin_queue(qpair) && req->pid != getpid()) {
     704           0 :                         nvme_pcie_qpair_insert_pending_admin_request(qpair, req, cpl);
     705             :                 } else {
     706           0 :                         nvme_complete_request(tr->cb_fn, tr->cb_arg, qpair, req, cpl);
     707             :                 }
     708             : 
     709           0 :                 tr->req = NULL;
     710             : 
     711           0 :                 TAILQ_INSERT_HEAD(&pqpair->free_tr, tr, tq_list);
     712             :         }
     713           0 : }
     714             : 
     715             : void
     716           0 : nvme_pcie_qpair_manual_complete_tracker(struct spdk_nvme_qpair *qpair,
     717             :                                         struct nvme_tracker *tr, uint32_t sct, uint32_t sc, uint32_t dnr,
     718             :                                         bool print_on_error)
     719             : {
     720           0 :         struct spdk_nvme_cpl    cpl;
     721             : 
     722           0 :         memset(&cpl, 0, sizeof(cpl));
     723           0 :         cpl.sqid = qpair->id;
     724           0 :         cpl.cid = tr->cid;
     725           0 :         cpl.status.sct = sct;
     726           0 :         cpl.status.sc = sc;
     727           0 :         cpl.status.dnr = dnr;
     728           0 :         nvme_pcie_qpair_complete_tracker(qpair, tr, &cpl, print_on_error);
     729           0 : }
     730             : 
     731             : void
     732           0 : nvme_pcie_qpair_abort_trackers(struct spdk_nvme_qpair *qpair, uint32_t dnr)
     733             : {
     734           0 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     735             :         struct nvme_tracker *tr, *temp, *last;
     736             : 
     737           0 :         last = TAILQ_LAST(&pqpair->outstanding_tr, nvme_outstanding_tr_head);
     738             : 
     739             :         /* Abort previously submitted (outstanding) trs */
     740           0 :         TAILQ_FOREACH_SAFE(tr, &pqpair->outstanding_tr, tq_list, temp) {
     741           0 :                 if (!qpair->ctrlr->opts.disable_error_logging) {
     742           0 :                         SPDK_ERRLOG("aborting outstanding command\n");
     743             :                 }
     744           0 :                 nvme_pcie_qpair_manual_complete_tracker(qpair, tr, SPDK_NVME_SCT_GENERIC,
     745             :                                                         SPDK_NVME_SC_ABORTED_BY_REQUEST, dnr, true);
     746             : 
     747           0 :                 if (tr == last) {
     748           0 :                         break;
     749             :                 }
     750             :         }
     751           0 : }
     752             : 
     753             : void
     754           1 : nvme_pcie_admin_qpair_abort_aers(struct spdk_nvme_qpair *qpair)
     755             : {
     756           1 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     757             :         struct nvme_tracker     *tr;
     758             : 
     759           1 :         tr = TAILQ_FIRST(&pqpair->outstanding_tr);
     760           1 :         while (tr != NULL) {
     761           0 :                 assert(tr->req != NULL);
     762           0 :                 if (tr->req->cmd.opc == SPDK_NVME_OPC_ASYNC_EVENT_REQUEST) {
     763           0 :                         nvme_pcie_qpair_manual_complete_tracker(qpair, tr,
     764             :                                                                 SPDK_NVME_SCT_GENERIC, SPDK_NVME_SC_ABORTED_SQ_DELETION, 0,
     765             :                                                                 false);
     766           0 :                         tr = TAILQ_FIRST(&pqpair->outstanding_tr);
     767             :                 } else {
     768           0 :                         tr = TAILQ_NEXT(tr, tq_list);
     769             :                 }
     770             :         }
     771           1 : }
     772             : 
     773             : void
     774           1 : nvme_pcie_admin_qpair_destroy(struct spdk_nvme_qpair *qpair)
     775             : {
     776           1 :         nvme_pcie_admin_qpair_abort_aers(qpair);
     777           1 : }
     778             : 
     779             : void
     780           0 : nvme_pcie_qpair_abort_reqs(struct spdk_nvme_qpair *qpair, uint32_t dnr)
     781             : {
     782           0 :         nvme_pcie_qpair_abort_trackers(qpair, dnr);
     783           0 : }
     784             : 
     785             : static void
     786           0 : nvme_pcie_qpair_check_timeout(struct spdk_nvme_qpair *qpair)
     787             : {
     788             :         uint64_t t02;
     789             :         struct nvme_tracker *tr, *tmp;
     790           0 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     791           0 :         struct spdk_nvme_ctrlr *ctrlr = qpair->ctrlr;
     792             :         struct spdk_nvme_ctrlr_process *active_proc;
     793             : 
     794             :         /* Don't check timeouts during controller initialization. */
     795           0 :         if (ctrlr->state != NVME_CTRLR_STATE_READY) {
     796           0 :                 return;
     797             :         }
     798             : 
     799           0 :         if (nvme_qpair_is_admin_queue(qpair)) {
     800           0 :                 active_proc = nvme_ctrlr_get_current_process(ctrlr);
     801             :         } else {
     802           0 :                 active_proc = qpair->active_proc;
     803             :         }
     804             : 
     805             :         /* Only check timeouts if the current process has a timeout callback. */
     806           0 :         if (active_proc == NULL || active_proc->timeout_cb_fn == NULL) {
     807           0 :                 return;
     808             :         }
     809             : 
     810           0 :         t02 = spdk_get_ticks();
     811           0 :         TAILQ_FOREACH_SAFE(tr, &pqpair->outstanding_tr, tq_list, tmp) {
     812           0 :                 assert(tr->req != NULL);
     813             : 
     814           0 :                 if (nvme_request_check_timeout(tr->req, tr->cid, active_proc, t02)) {
     815             :                         /*
     816             :                          * The requests are in order, so as soon as one has not timed out,
     817             :                          * stop iterating.
     818             :                          */
     819           0 :                         break;
     820             :                 }
     821             :         }
     822             : }
     823             : 
     824             : int32_t
     825           0 : nvme_pcie_qpair_process_completions(struct spdk_nvme_qpair *qpair, uint32_t max_completions)
     826             : {
     827           0 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     828             :         struct nvme_tracker     *tr;
     829             :         struct spdk_nvme_cpl    *cpl, *next_cpl;
     830           0 :         uint32_t                 num_completions = 0;
     831           0 :         struct spdk_nvme_ctrlr  *ctrlr = qpair->ctrlr;
     832             :         uint16_t                 next_cq_head;
     833             :         uint8_t                  next_phase;
     834           0 :         bool                     next_is_valid = false;
     835             :         int                      rc;
     836             : 
     837           0 :         if (spdk_unlikely(pqpair->pcie_state == NVME_PCIE_QPAIR_FAILED)) {
     838           0 :                 return -ENXIO;
     839             :         }
     840             : 
     841           0 :         if (spdk_unlikely(nvme_qpair_get_state(qpair) == NVME_QPAIR_CONNECTING)) {
     842           0 :                 if (pqpair->pcie_state == NVME_PCIE_QPAIR_READY) {
     843             :                         /* It is possible that another thread set the pcie_state to
     844             :                          * QPAIR_READY, if it polled the adminq and processed the SQ
     845             :                          * completion for this qpair.  So check for that condition
     846             :                          * here and then update the qpair's state to CONNECTED, since
     847             :                          * we can only set the qpair state from the qpair's thread.
     848             :                          * (Note: this fixed issue #2157.)
     849             :                          */
     850           0 :                         nvme_qpair_set_state(qpair, NVME_QPAIR_CONNECTED);
     851           0 :                 } else if (pqpair->pcie_state == NVME_PCIE_QPAIR_FAILED) {
     852           0 :                         nvme_qpair_set_state(qpair, NVME_QPAIR_DISCONNECTED);
     853           0 :                         return -ENXIO;
     854             :                 } else {
     855           0 :                         rc = spdk_nvme_qpair_process_completions(ctrlr->adminq, 0);
     856           0 :                         if (rc < 0) {
     857           0 :                                 return rc;
     858           0 :                         } else if (pqpair->pcie_state == NVME_PCIE_QPAIR_FAILED) {
     859           0 :                                 nvme_qpair_set_state(qpair, NVME_QPAIR_DISCONNECTED);
     860           0 :                                 return -ENXIO;
     861             :                         }
     862             :                 }
     863           0 :                 return 0;
     864             :         }
     865             : 
     866           0 :         if (spdk_unlikely(nvme_qpair_is_admin_queue(qpair))) {
     867           0 :                 nvme_ctrlr_lock(ctrlr);
     868             :         }
     869             : 
     870           0 :         if (max_completions == 0 || max_completions > pqpair->max_completions_cap) {
     871             :                 /*
     872             :                  * max_completions == 0 means unlimited, but complete at most
     873             :                  * max_completions_cap batch of I/O at a time so that the completion
     874             :                  * queue doorbells don't wrap around.
     875             :                  */
     876           0 :                 max_completions = pqpair->max_completions_cap;
     877             :         }
     878             : 
     879           0 :         pqpair->stat->polls++;
     880             : 
     881             :         while (1) {
     882           0 :                 cpl = &pqpair->cpl[pqpair->cq_head];
     883             : 
     884           0 :                 if (!next_is_valid && cpl->status.p != pqpair->flags.phase) {
     885           0 :                         break;
     886             :                 }
     887             : 
     888           0 :                 if (spdk_likely(pqpair->cq_head + 1 != pqpair->num_entries)) {
     889           0 :                         next_cq_head = pqpair->cq_head + 1;
     890           0 :                         next_phase = pqpair->flags.phase;
     891             :                 } else {
     892           0 :                         next_cq_head = 0;
     893           0 :                         next_phase = !pqpair->flags.phase;
     894             :                 }
     895           0 :                 next_cpl = &pqpair->cpl[next_cq_head];
     896           0 :                 next_is_valid = (next_cpl->status.p == next_phase);
     897           0 :                 if (next_is_valid) {
     898           0 :                         __builtin_prefetch(&pqpair->tr[next_cpl->cid]);
     899             :                 }
     900             : 
     901             : #if defined(__PPC64__) || defined(__riscv) || defined(__loongarch__)
     902             :                 /*
     903             :                  * This memory barrier prevents reordering of:
     904             :                  * - load after store from/to tr
     905             :                  * - load after load cpl phase and cpl cid
     906             :                  */
     907             :                 spdk_mb();
     908             : #elif defined(__aarch64__)
     909             :                 __asm volatile("dmb oshld" ::: "memory");
     910             : #endif
     911             : 
     912           0 :                 if (spdk_unlikely(++pqpair->cq_head == pqpair->num_entries)) {
     913           0 :                         pqpair->cq_head = 0;
     914           0 :                         pqpair->flags.phase = !pqpair->flags.phase;
     915             :                 }
     916             : 
     917           0 :                 tr = &pqpair->tr[cpl->cid];
     918           0 :                 pqpair->sq_head = cpl->sqhd;
     919             : 
     920           0 :                 if (tr->req) {
     921             :                         /* Prefetch the req's STAILQ_ENTRY since we'll need to access it
     922             :                          * as part of putting the req back on the qpair's free list.
     923             :                          */
     924           0 :                         __builtin_prefetch(&tr->req->stailq);
     925           0 :                         nvme_pcie_qpair_complete_tracker(qpair, tr, cpl, true);
     926             :                 } else {
     927           0 :                         SPDK_ERRLOG("cpl does not map to outstanding cmd\n");
     928           0 :                         spdk_nvme_qpair_print_completion(qpair, cpl);
     929           0 :                         assert(0);
     930             :                 }
     931             : 
     932           0 :                 if (++num_completions == max_completions) {
     933           0 :                         break;
     934             :                 }
     935             :         }
     936             : 
     937           0 :         if (num_completions > 0) {
     938           0 :                 pqpair->stat->completions += num_completions;
     939           0 :                 nvme_pcie_qpair_ring_cq_doorbell(qpair);
     940             :         } else {
     941           0 :                 pqpair->stat->idle_polls++;
     942             :         }
     943             : 
     944           0 :         if (pqpair->flags.delay_cmd_submit) {
     945           0 :                 if (pqpair->last_sq_tail != pqpair->sq_tail) {
     946           0 :                         nvme_pcie_qpair_ring_sq_doorbell(qpair);
     947           0 :                         pqpair->last_sq_tail = pqpair->sq_tail;
     948             :                 }
     949             :         }
     950             : 
     951           0 :         if (spdk_unlikely(ctrlr->timeout_enabled)) {
     952             :                 /*
     953             :                  * User registered for timeout callback
     954             :                  */
     955           0 :                 nvme_pcie_qpair_check_timeout(qpair);
     956             :         }
     957             : 
     958             :         /* Before returning, complete any pending admin request or
     959             :          * process the admin qpair disconnection.
     960             :          */
     961           0 :         if (spdk_unlikely(nvme_qpair_is_admin_queue(qpair))) {
     962           0 :                 nvme_pcie_qpair_complete_pending_admin_request(qpair);
     963             : 
     964           0 :                 if (nvme_qpair_get_state(qpair) == NVME_QPAIR_DISCONNECTING) {
     965           0 :                         rc = nvme_ctrlr_disable_poll(qpair->ctrlr);
     966           0 :                         if (rc != -EAGAIN) {
     967           0 :                                 nvme_transport_ctrlr_disconnect_qpair_done(qpair);
     968             :                         }
     969             :                 }
     970             : 
     971           0 :                 nvme_ctrlr_unlock(ctrlr);
     972             :         }
     973             : 
     974           0 :         if (spdk_unlikely(pqpair->flags.has_pending_vtophys_failures)) {
     975             :                 struct nvme_tracker *tr, *tmp;
     976             : 
     977           0 :                 TAILQ_FOREACH_SAFE(tr, &pqpair->outstanding_tr, tq_list, tmp) {
     978           0 :                         if (tr->bad_vtophys) {
     979           0 :                                 tr->bad_vtophys = 0;
     980           0 :                                 nvme_pcie_fail_request_bad_vtophys(qpair, tr);
     981             :                         }
     982             :                 }
     983           0 :                 pqpair->flags.has_pending_vtophys_failures = 0;
     984             :         }
     985             : 
     986           0 :         return num_completions;
     987             : }
     988             : 
     989             : int
     990           4 : nvme_pcie_qpair_destroy(struct spdk_nvme_qpair *qpair)
     991             : {
     992           4 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     993             : 
     994           4 :         if (nvme_qpair_is_admin_queue(qpair)) {
     995           1 :                 nvme_pcie_admin_qpair_destroy(qpair);
     996             :         }
     997             :         /*
     998             :          * We check sq_vaddr and cq_vaddr to see if the user specified the memory
     999             :          * buffers when creating the I/O queue.
    1000             :          * If the user specified them, we cannot free that memory.
    1001             :          * Nor do we free it if it's in the CMB.
    1002             :          */
    1003           4 :         if (!pqpair->sq_vaddr && pqpair->cmd && !pqpair->sq_in_cmb) {
    1004           2 :                 spdk_free(pqpair->cmd);
    1005             :         }
    1006           4 :         if (!pqpair->cq_vaddr && pqpair->cpl) {
    1007           2 :                 spdk_free(pqpair->cpl);
    1008             :         }
    1009           4 :         if (pqpair->tr) {
    1010           4 :                 spdk_free(pqpair->tr);
    1011             :         }
    1012             : 
    1013           4 :         nvme_qpair_deinit(qpair);
    1014             : 
    1015           4 :         if (!pqpair->shared_stats && (!qpair->active_proc ||
    1016           0 :                                       qpair->active_proc == nvme_ctrlr_get_current_process(qpair->ctrlr))) {
    1017           4 :                 if (qpair->id) {
    1018           3 :                         free(pqpair->stat);
    1019             :                 } else {
    1020             :                         /* statistics of admin qpair are allocates from huge pages because
    1021             :                          * admin qpair is shared for multi-process */
    1022           1 :                         spdk_free(pqpair->stat);
    1023             :                 }
    1024             : 
    1025             :         }
    1026             : 
    1027           4 :         spdk_free(pqpair);
    1028             : 
    1029           4 :         return 0;
    1030             : }
    1031             : 
    1032             : struct spdk_nvme_qpair *
    1033           0 : nvme_pcie_ctrlr_create_io_qpair(struct spdk_nvme_ctrlr *ctrlr, uint16_t qid,
    1034             :                                 const struct spdk_nvme_io_qpair_opts *opts)
    1035             : {
    1036             :         struct nvme_pcie_qpair *pqpair;
    1037             :         struct spdk_nvme_qpair *qpair;
    1038             :         int rc;
    1039             : 
    1040           0 :         assert(ctrlr != NULL);
    1041             : 
    1042           0 :         pqpair = spdk_zmalloc(sizeof(*pqpair), 64, NULL,
    1043             :                               SPDK_ENV_SOCKET_ID_ANY, SPDK_MALLOC_SHARE);
    1044           0 :         if (pqpair == NULL) {
    1045           0 :                 return NULL;
    1046             :         }
    1047             : 
    1048           0 :         pqpair->num_entries = opts->io_queue_size;
    1049           0 :         pqpair->flags.delay_cmd_submit = opts->delay_cmd_submit;
    1050             : 
    1051           0 :         qpair = &pqpair->qpair;
    1052             : 
    1053           0 :         rc = nvme_qpair_init(qpair, qid, ctrlr, opts->qprio, opts->io_queue_requests, opts->async_mode);
    1054           0 :         if (rc != 0) {
    1055           0 :                 nvme_pcie_qpair_destroy(qpair);
    1056           0 :                 return NULL;
    1057             :         }
    1058             : 
    1059           0 :         rc = nvme_pcie_qpair_construct(qpair, opts);
    1060             : 
    1061           0 :         if (rc != 0) {
    1062           0 :                 nvme_pcie_qpair_destroy(qpair);
    1063           0 :                 return NULL;
    1064             :         }
    1065             : 
    1066           0 :         return qpair;
    1067             : }
    1068             : 
    1069             : int
    1070           0 : nvme_pcie_ctrlr_delete_io_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair)
    1071             : {
    1072           0 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
    1073             :         struct nvme_completion_poll_status *status;
    1074             :         int rc;
    1075             : 
    1076           0 :         assert(ctrlr != NULL);
    1077             : 
    1078           0 :         if (ctrlr->is_removed) {
    1079           0 :                 goto free;
    1080             :         }
    1081             : 
    1082           0 :         if (ctrlr->prepare_for_reset) {
    1083           0 :                 if (nvme_qpair_get_state(qpair) == NVME_QPAIR_CONNECTING) {
    1084           0 :                         pqpair->flags.defer_destruction = true;
    1085             :                 }
    1086           0 :                 goto clear_shadow_doorbells;
    1087             :         }
    1088             : 
    1089             :         /* If attempting to delete a qpair that's still being connected, we have to wait until it's
    1090             :          * finished, so that we don't free it while it's waiting for the create cq/sq callbacks.
    1091             :          */
    1092           0 :         while (pqpair->pcie_state == NVME_PCIE_QPAIR_WAIT_FOR_CQ ||
    1093           0 :                pqpair->pcie_state == NVME_PCIE_QPAIR_WAIT_FOR_SQ) {
    1094           0 :                 rc = spdk_nvme_qpair_process_completions(ctrlr->adminq, 0);
    1095           0 :                 if (rc < 0) {
    1096           0 :                         break;
    1097             :                 }
    1098             :         }
    1099             : 
    1100           0 :         status = calloc(1, sizeof(*status));
    1101           0 :         if (!status) {
    1102           0 :                 SPDK_ERRLOG("Failed to allocate status tracker\n");
    1103           0 :                 goto free;
    1104             :         }
    1105             : 
    1106             :         /* Delete the I/O submission queue */
    1107           0 :         rc = nvme_pcie_ctrlr_cmd_delete_io_sq(ctrlr, qpair, nvme_completion_poll_cb, status);
    1108           0 :         if (rc != 0) {
    1109           0 :                 SPDK_ERRLOG("Failed to send request to delete_io_sq with rc=%d\n", rc);
    1110           0 :                 free(status);
    1111           0 :                 goto free;
    1112             :         }
    1113           0 :         if (nvme_wait_for_completion(ctrlr->adminq, status)) {
    1114           0 :                 if (!status->timed_out) {
    1115           0 :                         free(status);
    1116             :                 }
    1117           0 :                 goto free;
    1118             :         }
    1119             : 
    1120             :         /* Now that the submission queue is deleted, the device is supposed to have
    1121             :          * completed any outstanding I/O. Try to complete them. If they don't complete,
    1122             :          * they'll be marked as aborted and completed below. */
    1123           0 :         if (qpair->active_proc == nvme_ctrlr_get_current_process(ctrlr)) {
    1124           0 :                 nvme_pcie_qpair_process_completions(qpair, 0);
    1125             :         }
    1126             : 
    1127           0 :         memset(status, 0, sizeof(*status));
    1128             :         /* Delete the completion queue */
    1129           0 :         rc = nvme_pcie_ctrlr_cmd_delete_io_cq(ctrlr, qpair, nvme_completion_poll_cb, status);
    1130           0 :         if (rc != 0) {
    1131           0 :                 SPDK_ERRLOG("Failed to send request to delete_io_cq with rc=%d\n", rc);
    1132           0 :                 free(status);
    1133           0 :                 goto free;
    1134             :         }
    1135           0 :         if (nvme_wait_for_completion(ctrlr->adminq, status)) {
    1136           0 :                 if (!status->timed_out) {
    1137           0 :                         free(status);
    1138             :                 }
    1139           0 :                 goto free;
    1140             :         }
    1141           0 :         free(status);
    1142             : 
    1143           0 : clear_shadow_doorbells:
    1144           0 :         if (pqpair->flags.has_shadow_doorbell && ctrlr->shadow_doorbell) {
    1145           0 :                 *pqpair->shadow_doorbell.sq_tdbl = 0;
    1146           0 :                 *pqpair->shadow_doorbell.cq_hdbl = 0;
    1147           0 :                 *pqpair->shadow_doorbell.sq_eventidx = 0;
    1148           0 :                 *pqpair->shadow_doorbell.cq_eventidx = 0;
    1149             :         }
    1150           0 : free:
    1151           0 :         if (qpair->no_deletion_notification_needed == 0) {
    1152             :                 /* Abort the rest of the I/O */
    1153           0 :                 nvme_pcie_qpair_abort_trackers(qpair, 1);
    1154             :         }
    1155             : 
    1156           0 :         if (!pqpair->flags.defer_destruction) {
    1157           0 :                 nvme_pcie_qpair_destroy(qpair);
    1158             :         }
    1159           0 :         return 0;
    1160             : }
    1161             : 
    1162             : static void
    1163           3 : nvme_pcie_fail_request_bad_vtophys(struct spdk_nvme_qpair *qpair, struct nvme_tracker *tr)
    1164             : {
    1165           3 :         if (!qpair->in_completion_context) {
    1166           3 :                 struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
    1167             : 
    1168           3 :                 tr->bad_vtophys = 1;
    1169           3 :                 pqpair->flags.has_pending_vtophys_failures = 1;
    1170           3 :                 return;
    1171             :         }
    1172             : 
    1173             :         /*
    1174             :          * Bad vtophys translation, so abort this request and return
    1175             :          *  immediately.
    1176             :          */
    1177           0 :         SPDK_ERRLOG("vtophys or other payload buffer related error\n");
    1178           0 :         nvme_pcie_qpair_manual_complete_tracker(qpair, tr, SPDK_NVME_SCT_GENERIC,
    1179             :                                                 SPDK_NVME_SC_INVALID_FIELD,
    1180             :                                                 1 /* do not retry */, true);
    1181             : }
    1182             : 
    1183             : /*
    1184             :  * Append PRP list entries to describe a virtually contiguous buffer starting at virt_addr of len bytes.
    1185             :  *
    1186             :  * *prp_index will be updated to account for the number of PRP entries used.
    1187             :  */
    1188             : static inline int
    1189          25 : nvme_pcie_prp_list_append(struct spdk_nvme_ctrlr *ctrlr, struct nvme_tracker *tr,
    1190             :                           uint32_t *prp_index, void *virt_addr, size_t len,
    1191             :                           uint32_t page_size)
    1192             : {
    1193          25 :         struct spdk_nvme_cmd *cmd = &tr->req->cmd;
    1194          25 :         uintptr_t page_mask = page_size - 1;
    1195             :         uint64_t phys_addr;
    1196             :         uint32_t i;
    1197             : 
    1198          25 :         SPDK_DEBUGLOG(nvme, "prp_index:%u virt_addr:%p len:%u\n",
    1199             :                       *prp_index, virt_addr, (uint32_t)len);
    1200             : 
    1201          25 :         if (spdk_unlikely(((uintptr_t)virt_addr & 3) != 0)) {
    1202           2 :                 SPDK_ERRLOG("virt_addr %p not dword aligned\n", virt_addr);
    1203           2 :                 return -EFAULT;
    1204             :         }
    1205             : 
    1206          23 :         i = *prp_index;
    1207        2070 :         while (len) {
    1208             :                 uint32_t seg_len;
    1209             : 
    1210             :                 /*
    1211             :                  * prp_index 0 is stored in prp1, and the rest are stored in the prp[] array,
    1212             :                  * so prp_index == count is valid.
    1213             :                  */
    1214        2051 :                 if (spdk_unlikely(i > SPDK_COUNTOF(tr->u.prp))) {
    1215           2 :                         SPDK_ERRLOG("out of PRP entries\n");
    1216           2 :                         return -EFAULT;
    1217             :                 }
    1218             : 
    1219        2049 :                 phys_addr = nvme_pcie_vtophys(ctrlr, virt_addr, NULL);
    1220        2049 :                 if (spdk_unlikely(phys_addr == SPDK_VTOPHYS_ERROR)) {
    1221           1 :                         SPDK_ERRLOG("vtophys(%p) failed\n", virt_addr);
    1222           1 :                         return -EFAULT;
    1223             :                 }
    1224             : 
    1225        2048 :                 if (i == 0) {
    1226          19 :                         SPDK_DEBUGLOG(nvme, "prp1 = %p\n", (void *)phys_addr);
    1227          19 :                         cmd->dptr.prp.prp1 = phys_addr;
    1228          19 :                         seg_len = page_size - ((uintptr_t)virt_addr & page_mask);
    1229             :                 } else {
    1230        2029 :                         if ((phys_addr & page_mask) != 0) {
    1231           1 :                                 SPDK_ERRLOG("PRP %u not page aligned (%p)\n", i, virt_addr);
    1232           1 :                                 return -EFAULT;
    1233             :                         }
    1234             : 
    1235        2028 :                         SPDK_DEBUGLOG(nvme, "prp[%u] = %p\n", i - 1, (void *)phys_addr);
    1236        2028 :                         tr->u.prp[i - 1] = phys_addr;
    1237        2028 :                         seg_len = page_size;
    1238             :                 }
    1239             : 
    1240        2047 :                 seg_len = spdk_min(seg_len, len);
    1241        2047 :                 virt_addr = (uint8_t *)virt_addr + seg_len;
    1242        2047 :                 len -= seg_len;
    1243        2047 :                 i++;
    1244             :         }
    1245             : 
    1246          19 :         cmd->psdt = SPDK_NVME_PSDT_PRP;
    1247          19 :         if (i <= 1) {
    1248           6 :                 cmd->dptr.prp.prp2 = 0;
    1249          13 :         } else if (i == 2) {
    1250           6 :                 cmd->dptr.prp.prp2 = tr->u.prp[0];
    1251           6 :                 SPDK_DEBUGLOG(nvme, "prp2 = %p\n", (void *)cmd->dptr.prp.prp2);
    1252             :         } else {
    1253           7 :                 cmd->dptr.prp.prp2 = tr->prp_sgl_bus_addr;
    1254           7 :                 SPDK_DEBUGLOG(nvme, "prp2 = %p (PRP list)\n", (void *)cmd->dptr.prp.prp2);
    1255             :         }
    1256             : 
    1257          19 :         *prp_index = i;
    1258          19 :         return 0;
    1259             : }
    1260             : 
    1261             : static int
    1262           0 : nvme_pcie_qpair_build_request_invalid(struct spdk_nvme_qpair *qpair,
    1263             :                                       struct nvme_request *req, struct nvme_tracker *tr, bool dword_aligned)
    1264             : {
    1265           0 :         assert(0);
    1266             :         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1267             :         return -EINVAL;
    1268             : }
    1269             : 
    1270             : /**
    1271             :  * Build PRP list describing physically contiguous payload buffer.
    1272             :  */
    1273             : static int
    1274           4 : nvme_pcie_qpair_build_contig_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req,
    1275             :                                      struct nvme_tracker *tr, bool dword_aligned)
    1276             : {
    1277           4 :         uint32_t prp_index = 0;
    1278             :         int rc;
    1279             : 
    1280           4 :         rc = nvme_pcie_prp_list_append(qpair->ctrlr, tr, &prp_index,
    1281           4 :                                        (uint8_t *)req->payload.contig_or_cb_arg + req->payload_offset,
    1282           4 :                                        req->payload_size, qpair->ctrlr->page_size);
    1283           4 :         if (rc) {
    1284           1 :                 nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1285             :         }
    1286             : 
    1287           4 :         return rc;
    1288             : }
    1289             : 
    1290             : /**
    1291             :  * Build an SGL describing a physically contiguous payload buffer.
    1292             :  *
    1293             :  * This is more efficient than using PRP because large buffers can be
    1294             :  * described this way.
    1295             :  */
    1296             : static int
    1297           3 : nvme_pcie_qpair_build_contig_hw_sgl_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req,
    1298             :                 struct nvme_tracker *tr, bool dword_aligned)
    1299             : {
    1300             :         uint8_t *virt_addr;
    1301           3 :         uint64_t phys_addr, mapping_length;
    1302             :         uint32_t length;
    1303             :         struct spdk_nvme_sgl_descriptor *sgl;
    1304           3 :         uint32_t nseg = 0;
    1305             : 
    1306           3 :         assert(req->payload_size != 0);
    1307           3 :         assert(nvme_payload_type(&req->payload) == NVME_PAYLOAD_TYPE_CONTIG);
    1308             : 
    1309           3 :         sgl = tr->u.sgl;
    1310           3 :         req->cmd.psdt = SPDK_NVME_PSDT_SGL_MPTR_CONTIG;
    1311           3 :         req->cmd.dptr.sgl1.unkeyed.subtype = 0;
    1312             : 
    1313           3 :         length = req->payload_size;
    1314             :         /* ubsan complains about applying zero offset to null pointer if contig_or_cb_arg is NULL,
    1315             :          * so just double cast it to make it go away */
    1316           3 :         virt_addr = (uint8_t *)((uintptr_t)req->payload.contig_or_cb_arg + req->payload_offset);
    1317             : 
    1318           7 :         while (length > 0) {
    1319           4 :                 if (nseg >= NVME_MAX_SGL_DESCRIPTORS) {
    1320           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1321           0 :                         return -EFAULT;
    1322             :                 }
    1323             : 
    1324           4 :                 if (dword_aligned && ((uintptr_t)virt_addr & 3)) {
    1325           0 :                         SPDK_ERRLOG("virt_addr %p not dword aligned\n", virt_addr);
    1326           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1327           0 :                         return -EFAULT;
    1328             :                 }
    1329             : 
    1330           4 :                 mapping_length = length;
    1331           4 :                 phys_addr = nvme_pcie_vtophys(qpair->ctrlr, virt_addr, &mapping_length);
    1332           4 :                 if (phys_addr == SPDK_VTOPHYS_ERROR) {
    1333           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1334           0 :                         return -EFAULT;
    1335             :                 }
    1336             : 
    1337           4 :                 mapping_length = spdk_min(length, mapping_length);
    1338             : 
    1339           4 :                 length -= mapping_length;
    1340           4 :                 virt_addr += mapping_length;
    1341             : 
    1342           4 :                 sgl->unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1343           4 :                 sgl->unkeyed.length = mapping_length;
    1344           4 :                 sgl->address = phys_addr;
    1345           4 :                 sgl->unkeyed.subtype = 0;
    1346             : 
    1347           4 :                 sgl++;
    1348           4 :                 nseg++;
    1349             :         }
    1350             : 
    1351           3 :         if (nseg == 1) {
    1352             :                 /*
    1353             :                  * The whole transfer can be described by a single SGL descriptor.
    1354             :                  *  Use the special case described by the spec where SGL1's type is Data Block.
    1355             :                  *  This means the SGL in the tracker is not used at all, so copy the first (and only)
    1356             :                  *  SGL element into SGL1.
    1357             :                  */
    1358           2 :                 req->cmd.dptr.sgl1.unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1359           2 :                 req->cmd.dptr.sgl1.address = tr->u.sgl[0].address;
    1360           2 :                 req->cmd.dptr.sgl1.unkeyed.length = tr->u.sgl[0].unkeyed.length;
    1361             :         } else {
    1362             :                 /* SPDK NVMe driver supports only 1 SGL segment for now, it is enough because
    1363             :                  *  NVME_MAX_SGL_DESCRIPTORS * 16 is less than one page.
    1364             :                  */
    1365           1 :                 req->cmd.dptr.sgl1.unkeyed.type = SPDK_NVME_SGL_TYPE_LAST_SEGMENT;
    1366           1 :                 req->cmd.dptr.sgl1.address = tr->prp_sgl_bus_addr;
    1367           1 :                 req->cmd.dptr.sgl1.unkeyed.length = nseg * sizeof(struct spdk_nvme_sgl_descriptor);
    1368             :         }
    1369             : 
    1370           3 :         return 0;
    1371             : }
    1372             : 
    1373             : /**
    1374             :  * Build SGL list describing scattered payload buffer.
    1375             :  */
    1376             : static int
    1377           2 : nvme_pcie_qpair_build_hw_sgl_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req,
    1378             :                                      struct nvme_tracker *tr, bool dword_aligned)
    1379             : {
    1380             :         int rc;
    1381           2 :         void *virt_addr;
    1382           2 :         uint64_t phys_addr, mapping_length;
    1383           2 :         uint32_t remaining_transfer_len, remaining_user_sge_len, length;
    1384             :         struct spdk_nvme_sgl_descriptor *sgl;
    1385           2 :         uint32_t nseg = 0;
    1386             : 
    1387             :         /*
    1388             :          * Build scattered payloads.
    1389             :          */
    1390           2 :         assert(req->payload_size != 0);
    1391           2 :         assert(nvme_payload_type(&req->payload) == NVME_PAYLOAD_TYPE_SGL);
    1392           2 :         assert(req->payload.reset_sgl_fn != NULL);
    1393           2 :         assert(req->payload.next_sge_fn != NULL);
    1394           2 :         req->payload.reset_sgl_fn(req->payload.contig_or_cb_arg, req->payload_offset);
    1395             : 
    1396           2 :         sgl = tr->u.sgl;
    1397           2 :         req->cmd.psdt = SPDK_NVME_PSDT_SGL_MPTR_CONTIG;
    1398           2 :         req->cmd.dptr.sgl1.unkeyed.subtype = 0;
    1399             : 
    1400           2 :         remaining_transfer_len = req->payload_size;
    1401             : 
    1402           6 :         while (remaining_transfer_len > 0) {
    1403           4 :                 rc = req->payload.next_sge_fn(req->payload.contig_or_cb_arg,
    1404             :                                               &virt_addr, &remaining_user_sge_len);
    1405           4 :                 if (rc) {
    1406           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1407           0 :                         return -EFAULT;
    1408             :                 }
    1409             : 
    1410             :                 /* Bit Bucket SGL descriptor */
    1411           4 :                 if ((uint64_t)virt_addr == UINT64_MAX) {
    1412             :                         /* TODO: enable WRITE and COMPARE when necessary */
    1413           0 :                         if (req->cmd.opc != SPDK_NVME_OPC_READ) {
    1414           0 :                                 SPDK_ERRLOG("Only READ command can be supported\n");
    1415           0 :                                 goto exit;
    1416             :                         }
    1417           0 :                         if (nseg >= NVME_MAX_SGL_DESCRIPTORS) {
    1418           0 :                                 SPDK_ERRLOG("Too many SGL entries\n");
    1419           0 :                                 goto exit;
    1420             :                         }
    1421             : 
    1422           0 :                         sgl->unkeyed.type = SPDK_NVME_SGL_TYPE_BIT_BUCKET;
    1423             :                         /* If the SGL describes a destination data buffer, the length of data
    1424             :                          * buffer shall be discarded by controller, and the length is included
    1425             :                          * in Number of Logical Blocks (NLB) parameter. Otherwise, the length
    1426             :                          * is not included in the NLB parameter.
    1427             :                          */
    1428           0 :                         remaining_user_sge_len = spdk_min(remaining_user_sge_len, remaining_transfer_len);
    1429           0 :                         remaining_transfer_len -= remaining_user_sge_len;
    1430             : 
    1431           0 :                         sgl->unkeyed.length = remaining_user_sge_len;
    1432           0 :                         sgl->address = 0;
    1433           0 :                         sgl->unkeyed.subtype = 0;
    1434             : 
    1435           0 :                         sgl++;
    1436           0 :                         nseg++;
    1437             : 
    1438           0 :                         continue;
    1439             :                 }
    1440             : 
    1441           4 :                 remaining_user_sge_len = spdk_min(remaining_user_sge_len, remaining_transfer_len);
    1442           4 :                 remaining_transfer_len -= remaining_user_sge_len;
    1443           8 :                 while (remaining_user_sge_len > 0) {
    1444           4 :                         if (nseg >= NVME_MAX_SGL_DESCRIPTORS) {
    1445           0 :                                 SPDK_ERRLOG("Too many SGL entries\n");
    1446           0 :                                 goto exit;
    1447             :                         }
    1448             : 
    1449           4 :                         if (dword_aligned && ((uintptr_t)virt_addr & 3)) {
    1450           0 :                                 SPDK_ERRLOG("virt_addr %p not dword aligned\n", virt_addr);
    1451           0 :                                 goto exit;
    1452             :                         }
    1453             : 
    1454           4 :                         mapping_length = remaining_user_sge_len;
    1455           4 :                         phys_addr = nvme_pcie_vtophys(qpair->ctrlr, virt_addr, &mapping_length);
    1456           4 :                         if (phys_addr == SPDK_VTOPHYS_ERROR) {
    1457           0 :                                 goto exit;
    1458             :                         }
    1459             : 
    1460           4 :                         length = spdk_min(remaining_user_sge_len, mapping_length);
    1461           4 :                         remaining_user_sge_len -= length;
    1462           4 :                         virt_addr = (uint8_t *)virt_addr + length;
    1463             : 
    1464           4 :                         if (nseg > 0 && phys_addr ==
    1465           2 :                             (*(sgl - 1)).address + (*(sgl - 1)).unkeyed.length) {
    1466             :                                 /* extend previous entry */
    1467           0 :                                 (*(sgl - 1)).unkeyed.length += length;
    1468           0 :                                 continue;
    1469             :                         }
    1470             : 
    1471           4 :                         sgl->unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1472           4 :                         sgl->unkeyed.length = length;
    1473           4 :                         sgl->address = phys_addr;
    1474           4 :                         sgl->unkeyed.subtype = 0;
    1475             : 
    1476           4 :                         sgl++;
    1477           4 :                         nseg++;
    1478             :                 }
    1479             :         }
    1480             : 
    1481           2 :         if (nseg == 1) {
    1482             :                 /*
    1483             :                  * The whole transfer can be described by a single SGL descriptor.
    1484             :                  *  Use the special case described by the spec where SGL1's type is Data Block.
    1485             :                  *  This means the SGL in the tracker is not used at all, so copy the first (and only)
    1486             :                  *  SGL element into SGL1.
    1487             :                  */
    1488           1 :                 req->cmd.dptr.sgl1.unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1489           1 :                 req->cmd.dptr.sgl1.address = tr->u.sgl[0].address;
    1490           1 :                 req->cmd.dptr.sgl1.unkeyed.length = tr->u.sgl[0].unkeyed.length;
    1491             :         } else {
    1492             :                 /* SPDK NVMe driver supports only 1 SGL segment for now, it is enough because
    1493             :                  *  NVME_MAX_SGL_DESCRIPTORS * 16 is less than one page.
    1494             :                  */
    1495           1 :                 req->cmd.dptr.sgl1.unkeyed.type = SPDK_NVME_SGL_TYPE_LAST_SEGMENT;
    1496           1 :                 req->cmd.dptr.sgl1.address = tr->prp_sgl_bus_addr;
    1497           1 :                 req->cmd.dptr.sgl1.unkeyed.length = nseg * sizeof(struct spdk_nvme_sgl_descriptor);
    1498             :         }
    1499             : 
    1500           2 :         return 0;
    1501             : 
    1502           0 : exit:
    1503           0 :         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1504           0 :         return -EFAULT;
    1505             : }
    1506             : 
    1507             : /**
    1508             :  * Build PRP list describing scattered payload buffer.
    1509             :  */
    1510             : static int
    1511           1 : nvme_pcie_qpair_build_prps_sgl_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req,
    1512             :                                        struct nvme_tracker *tr, bool dword_aligned)
    1513             : {
    1514             :         int rc;
    1515           1 :         void *virt_addr;
    1516           1 :         uint32_t remaining_transfer_len, length;
    1517           1 :         uint32_t prp_index = 0;
    1518           1 :         uint32_t page_size = qpair->ctrlr->page_size;
    1519             : 
    1520             :         /*
    1521             :          * Build scattered payloads.
    1522             :          */
    1523           1 :         assert(nvme_payload_type(&req->payload) == NVME_PAYLOAD_TYPE_SGL);
    1524           1 :         assert(req->payload.reset_sgl_fn != NULL);
    1525           1 :         req->payload.reset_sgl_fn(req->payload.contig_or_cb_arg, req->payload_offset);
    1526             : 
    1527           1 :         remaining_transfer_len = req->payload_size;
    1528           2 :         while (remaining_transfer_len > 0) {
    1529           1 :                 assert(req->payload.next_sge_fn != NULL);
    1530           1 :                 rc = req->payload.next_sge_fn(req->payload.contig_or_cb_arg, &virt_addr, &length);
    1531           1 :                 if (rc) {
    1532           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1533           0 :                         return -EFAULT;
    1534             :                 }
    1535             : 
    1536           1 :                 length = spdk_min(remaining_transfer_len, length);
    1537             : 
    1538             :                 /*
    1539             :                  * Any incompatible sges should have been handled up in the splitting routine,
    1540             :                  *  but assert here as an additional check.
    1541             :                  *
    1542             :                  * All SGEs except last must end on a page boundary.
    1543             :                  */
    1544           1 :                 assert((length == remaining_transfer_len) ||
    1545             :                        _is_page_aligned((uintptr_t)virt_addr + length, page_size));
    1546             : 
    1547           1 :                 rc = nvme_pcie_prp_list_append(qpair->ctrlr, tr, &prp_index, virt_addr, length, page_size);
    1548           1 :                 if (rc) {
    1549           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1550           0 :                         return rc;
    1551             :                 }
    1552             : 
    1553           1 :                 remaining_transfer_len -= length;
    1554             :         }
    1555             : 
    1556           1 :         return 0;
    1557             : }
    1558             : 
    1559             : typedef int(*build_req_fn)(struct spdk_nvme_qpair *, struct nvme_request *, struct nvme_tracker *,
    1560             :                            bool);
    1561             : 
    1562             : static build_req_fn const g_nvme_pcie_build_req_table[][2] = {
    1563             :         [NVME_PAYLOAD_TYPE_INVALID] = {
    1564             :                 nvme_pcie_qpair_build_request_invalid,                  /* PRP */
    1565             :                 nvme_pcie_qpair_build_request_invalid                   /* SGL */
    1566             :         },
    1567             :         [NVME_PAYLOAD_TYPE_CONTIG] = {
    1568             :                 nvme_pcie_qpair_build_contig_request,                   /* PRP */
    1569             :                 nvme_pcie_qpair_build_contig_hw_sgl_request             /* SGL */
    1570             :         },
    1571             :         [NVME_PAYLOAD_TYPE_SGL] = {
    1572             :                 nvme_pcie_qpair_build_prps_sgl_request,                 /* PRP */
    1573             :                 nvme_pcie_qpair_build_hw_sgl_request                    /* SGL */
    1574             :         }
    1575             : };
    1576             : 
    1577             : static int
    1578           5 : nvme_pcie_qpair_build_metadata(struct spdk_nvme_qpair *qpair, struct nvme_tracker *tr,
    1579             :                                bool sgl_supported, bool mptr_sgl_supported, bool dword_aligned)
    1580             : {
    1581             :         void *md_payload;
    1582           5 :         struct nvme_request *req = tr->req;
    1583           5 :         uint64_t mapping_length;
    1584             : 
    1585           5 :         if (req->payload.md) {
    1586           5 :                 md_payload = (uint8_t *)req->payload.md + req->md_offset;
    1587           5 :                 if (dword_aligned && ((uintptr_t)md_payload & 3)) {
    1588           0 :                         SPDK_ERRLOG("virt_addr %p not dword aligned\n", md_payload);
    1589           0 :                         goto exit;
    1590             :                 }
    1591             : 
    1592           5 :                 mapping_length = req->md_size;
    1593           5 :                 if (sgl_supported && mptr_sgl_supported && dword_aligned) {
    1594           2 :                         assert(req->cmd.psdt == SPDK_NVME_PSDT_SGL_MPTR_CONTIG);
    1595           2 :                         req->cmd.psdt = SPDK_NVME_PSDT_SGL_MPTR_SGL;
    1596             : 
    1597           2 :                         tr->meta_sgl.address = nvme_pcie_vtophys(qpair->ctrlr, md_payload, &mapping_length);
    1598           2 :                         if (tr->meta_sgl.address == SPDK_VTOPHYS_ERROR || mapping_length != req->md_size) {
    1599           1 :                                 goto exit;
    1600             :                         }
    1601           1 :                         tr->meta_sgl.unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1602           1 :                         tr->meta_sgl.unkeyed.length = req->md_size;
    1603           1 :                         tr->meta_sgl.unkeyed.subtype = 0;
    1604           1 :                         req->cmd.mptr = tr->prp_sgl_bus_addr - sizeof(struct spdk_nvme_sgl_descriptor);
    1605             :                 } else {
    1606           3 :                         req->cmd.mptr = nvme_pcie_vtophys(qpair->ctrlr, md_payload, &mapping_length);
    1607           3 :                         if (req->cmd.mptr == SPDK_VTOPHYS_ERROR || mapping_length != req->md_size) {
    1608           1 :                                 goto exit;
    1609             :                         }
    1610             :                 }
    1611             :         }
    1612             : 
    1613           3 :         return 0;
    1614             : 
    1615           2 : exit:
    1616           2 :         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1617           2 :         return -EINVAL;
    1618             : }
    1619             : 
    1620             : int
    1621           0 : nvme_pcie_qpair_submit_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req)
    1622             : {
    1623             :         struct nvme_tracker     *tr;
    1624           0 :         int                     rc = 0;
    1625           0 :         struct spdk_nvme_ctrlr  *ctrlr = qpair->ctrlr;
    1626           0 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
    1627             :         enum nvme_payload_type  payload_type;
    1628             :         bool                    sgl_supported;
    1629             :         bool                    mptr_sgl_supported;
    1630           0 :         bool                    dword_aligned = true;
    1631             : 
    1632           0 :         if (spdk_unlikely(nvme_qpair_is_admin_queue(qpair))) {
    1633           0 :                 nvme_ctrlr_lock(ctrlr);
    1634             :         }
    1635             : 
    1636           0 :         tr = TAILQ_FIRST(&pqpair->free_tr);
    1637             : 
    1638           0 :         if (tr == NULL) {
    1639           0 :                 pqpair->stat->queued_requests++;
    1640             :                 /* Inform the upper layer to try again later. */
    1641           0 :                 rc = -EAGAIN;
    1642           0 :                 goto exit;
    1643             :         }
    1644             : 
    1645           0 :         pqpair->stat->submitted_requests++;
    1646           0 :         TAILQ_REMOVE(&pqpair->free_tr, tr, tq_list); /* remove tr from free_tr */
    1647           0 :         TAILQ_INSERT_TAIL(&pqpair->outstanding_tr, tr, tq_list);
    1648           0 :         tr->req = req;
    1649           0 :         tr->cb_fn = req->cb_fn;
    1650           0 :         tr->cb_arg = req->cb_arg;
    1651           0 :         req->cmd.cid = tr->cid;
    1652             : 
    1653           0 :         if (req->payload_size != 0) {
    1654           0 :                 payload_type = nvme_payload_type(&req->payload);
    1655             :                 /* According to the specification, PRPs shall be used for all
    1656             :                  *  Admin commands for NVMe over PCIe implementations.
    1657             :                  */
    1658           0 :                 sgl_supported = (ctrlr->flags & SPDK_NVME_CTRLR_SGL_SUPPORTED) != 0 &&
    1659           0 :                                 !nvme_qpair_is_admin_queue(qpair);
    1660           0 :                 mptr_sgl_supported = (ctrlr->flags & SPDK_NVME_CTRLR_MPTR_SGL_SUPPORTED) != 0 &&
    1661           0 :                                      !nvme_qpair_is_admin_queue(qpair);
    1662             : 
    1663           0 :                 if (sgl_supported) {
    1664             :                         /* Don't use SGL for DSM command */
    1665           0 :                         if (spdk_unlikely((ctrlr->quirks & NVME_QUIRK_NO_SGL_FOR_DSM) &&
    1666             :                                           (req->cmd.opc == SPDK_NVME_OPC_DATASET_MANAGEMENT))) {
    1667           0 :                                 sgl_supported = false;
    1668             :                         }
    1669             :                 }
    1670             : 
    1671           0 :                 if (sgl_supported && !(ctrlr->flags & SPDK_NVME_CTRLR_SGL_REQUIRES_DWORD_ALIGNMENT)) {
    1672           0 :                         dword_aligned = false;
    1673             :                 }
    1674             : 
    1675             :                 /* If we fail to build the request or the metadata, do not return the -EFAULT back up
    1676             :                  * the stack.  This ensures that we always fail these types of requests via a
    1677             :                  * completion callback, and never in the context of the submission.
    1678             :                  */
    1679           0 :                 rc = g_nvme_pcie_build_req_table[payload_type][sgl_supported](qpair, req, tr, dword_aligned);
    1680           0 :                 if (rc < 0) {
    1681           0 :                         assert(rc == -EFAULT);
    1682           0 :                         rc = 0;
    1683           0 :                         goto exit;
    1684             :                 }
    1685             : 
    1686           0 :                 rc = nvme_pcie_qpair_build_metadata(qpair, tr, sgl_supported, mptr_sgl_supported, dword_aligned);
    1687           0 :                 if (rc < 0) {
    1688           0 :                         assert(rc == -EFAULT);
    1689           0 :                         rc = 0;
    1690           0 :                         goto exit;
    1691             :                 }
    1692             :         }
    1693             : 
    1694           0 :         nvme_pcie_qpair_submit_tracker(qpair, tr);
    1695             : 
    1696           0 : exit:
    1697           0 :         if (spdk_unlikely(nvme_qpair_is_admin_queue(qpair))) {
    1698           0 :                 nvme_ctrlr_unlock(ctrlr);
    1699             :         }
    1700             : 
    1701           0 :         return rc;
    1702             : }
    1703             : 
    1704             : struct spdk_nvme_transport_poll_group *
    1705           1 : nvme_pcie_poll_group_create(void)
    1706             : {
    1707           1 :         struct nvme_pcie_poll_group *group = calloc(1, sizeof(*group));
    1708             : 
    1709           1 :         if (group == NULL) {
    1710           0 :                 SPDK_ERRLOG("Unable to allocate poll group.\n");
    1711           0 :                 return NULL;
    1712             :         }
    1713             : 
    1714           1 :         return &group->group;
    1715             : }
    1716             : 
    1717             : int
    1718           0 : nvme_pcie_poll_group_connect_qpair(struct spdk_nvme_qpair *qpair)
    1719             : {
    1720           0 :         return 0;
    1721             : }
    1722             : 
    1723             : int
    1724           0 : nvme_pcie_poll_group_disconnect_qpair(struct spdk_nvme_qpair *qpair)
    1725             : {
    1726           0 :         return 0;
    1727             : }
    1728             : 
    1729             : int
    1730           0 : nvme_pcie_poll_group_add(struct spdk_nvme_transport_poll_group *tgroup,
    1731             :                          struct spdk_nvme_qpair *qpair)
    1732             : {
    1733           0 :         return 0;
    1734             : }
    1735             : 
    1736             : int
    1737           0 : nvme_pcie_poll_group_remove(struct spdk_nvme_transport_poll_group *tgroup,
    1738             :                             struct spdk_nvme_qpair *qpair)
    1739             : {
    1740           0 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
    1741             : 
    1742           0 :         pqpair->stat = &g_dummy_stat;
    1743           0 :         return 0;
    1744             : }
    1745             : 
    1746             : int64_t
    1747           0 : nvme_pcie_poll_group_process_completions(struct spdk_nvme_transport_poll_group *tgroup,
    1748             :                 uint32_t completions_per_qpair, spdk_nvme_disconnected_qpair_cb disconnected_qpair_cb)
    1749             : {
    1750             :         struct spdk_nvme_qpair *qpair, *tmp_qpair;
    1751           0 :         int32_t local_completions = 0;
    1752           0 :         int64_t total_completions = 0;
    1753             : 
    1754           0 :         STAILQ_FOREACH_SAFE(qpair, &tgroup->disconnected_qpairs, poll_group_stailq, tmp_qpair) {
    1755           0 :                 disconnected_qpair_cb(qpair, tgroup->group->ctx);
    1756             :         }
    1757             : 
    1758           0 :         STAILQ_FOREACH_SAFE(qpair, &tgroup->connected_qpairs, poll_group_stailq, tmp_qpair) {
    1759           0 :                 local_completions = spdk_nvme_qpair_process_completions(qpair, completions_per_qpair);
    1760           0 :                 if (spdk_unlikely(local_completions < 0)) {
    1761           0 :                         disconnected_qpair_cb(qpair, tgroup->group->ctx);
    1762           0 :                         total_completions = -ENXIO;
    1763           0 :                 } else if (spdk_likely(total_completions >= 0)) {
    1764           0 :                         total_completions += local_completions;
    1765             :                 }
    1766             :         }
    1767             : 
    1768           0 :         return total_completions;
    1769             : }
    1770             : 
    1771             : int
    1772           1 : nvme_pcie_poll_group_destroy(struct spdk_nvme_transport_poll_group *tgroup)
    1773             : {
    1774           1 :         if (!STAILQ_EMPTY(&tgroup->connected_qpairs) || !STAILQ_EMPTY(&tgroup->disconnected_qpairs)) {
    1775           0 :                 return -EBUSY;
    1776             :         }
    1777             : 
    1778           1 :         free(tgroup);
    1779             : 
    1780           1 :         return 0;
    1781             : }
    1782             : 
    1783             : int
    1784           3 : nvme_pcie_poll_group_get_stats(struct spdk_nvme_transport_poll_group *tgroup,
    1785             :                                struct spdk_nvme_transport_poll_group_stat **_stats)
    1786             : {
    1787             :         struct nvme_pcie_poll_group *group;
    1788             :         struct spdk_nvme_transport_poll_group_stat *stats;
    1789             : 
    1790           3 :         if (tgroup == NULL || _stats == NULL) {
    1791           2 :                 SPDK_ERRLOG("Invalid stats or group pointer\n");
    1792           2 :                 return -EINVAL;
    1793             :         }
    1794             : 
    1795           1 :         stats = calloc(1, sizeof(*stats));
    1796           1 :         if (!stats) {
    1797           0 :                 SPDK_ERRLOG("Can't allocate memory for stats\n");
    1798           0 :                 return -ENOMEM;
    1799             :         }
    1800           1 :         stats->trtype = SPDK_NVME_TRANSPORT_PCIE;
    1801           1 :         group = SPDK_CONTAINEROF(tgroup, struct nvme_pcie_poll_group, group);
    1802           1 :         memcpy(&stats->pcie, &group->stats, sizeof(group->stats));
    1803             : 
    1804           1 :         *_stats = stats;
    1805             : 
    1806           1 :         return 0;
    1807             : }
    1808             : 
    1809             : void
    1810           1 : nvme_pcie_poll_group_free_stats(struct spdk_nvme_transport_poll_group *tgroup,
    1811             :                                 struct spdk_nvme_transport_poll_group_stat *stats)
    1812             : {
    1813           1 :         free(stats);
    1814           1 : }
    1815             : 
    1816           2 : SPDK_TRACE_REGISTER_FN(nvme_pcie, "nvme_pcie", TRACE_GROUP_NVME_PCIE)
    1817             : {
    1818           0 :         struct spdk_trace_tpoint_opts opts[] = {
    1819             :                 {
    1820             :                         "NVME_PCIE_SUBMIT", TRACE_NVME_PCIE_SUBMIT,
    1821             :                         OWNER_NVME_PCIE_QP, OBJECT_NVME_PCIE_REQ, 1,
    1822             :                         {       { "ctx", SPDK_TRACE_ARG_TYPE_PTR, 8 },
    1823             :                                 { "cid", SPDK_TRACE_ARG_TYPE_INT, 4 },
    1824             :                                 { "opc", SPDK_TRACE_ARG_TYPE_INT, 4 },
    1825             :                                 { "dw10", SPDK_TRACE_ARG_TYPE_PTR, 4 },
    1826             :                                 { "dw11", SPDK_TRACE_ARG_TYPE_PTR, 4 },
    1827             :                                 { "dw12", SPDK_TRACE_ARG_TYPE_PTR, 4 }
    1828             :                         }
    1829             :                 },
    1830             :                 {
    1831             :                         "NVME_PCIE_COMPLETE", TRACE_NVME_PCIE_COMPLETE,
    1832             :                         OWNER_NVME_PCIE_QP, OBJECT_NVME_PCIE_REQ, 0,
    1833             :                         {       { "ctx", SPDK_TRACE_ARG_TYPE_PTR, 8 },
    1834             :                                 { "cid", SPDK_TRACE_ARG_TYPE_INT, 4 },
    1835             :                                 { "cpl", SPDK_TRACE_ARG_TYPE_PTR, 4 }
    1836             :                         }
    1837             :                 },
    1838             :         };
    1839             : 
    1840           0 :         spdk_trace_register_object(OBJECT_NVME_PCIE_REQ, 'p');
    1841           0 :         spdk_trace_register_owner(OWNER_NVME_PCIE_QP, 'q');
    1842           0 :         spdk_trace_register_description_ext(opts, SPDK_COUNTOF(opts));
    1843           0 : }

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