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: 427 860 49.7 %
Date: 2024-07-12 21:29:49 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           4 :         pqpair->qpair.queue_depth = 0;
     220             : 
     221          31 :         for (i = 0; i < num_trackers; i++) {
     222          27 :                 tr = &pqpair->tr[i];
     223          27 :                 nvme_qpair_construct_tracker(tr, i, nvme_pcie_vtophys(ctrlr, tr, NULL));
     224          27 :                 TAILQ_INSERT_HEAD(&pqpair->free_tr, tr, tq_list);
     225             :         }
     226             : 
     227           4 :         nvme_pcie_qpair_reset(qpair);
     228             : 
     229           4 :         return 0;
     230             : }
     231             : 
     232             : int
     233           1 : nvme_pcie_ctrlr_construct_admin_qpair(struct spdk_nvme_ctrlr *ctrlr, uint16_t num_entries)
     234             : {
     235             :         struct nvme_pcie_qpair *pqpair;
     236             :         int rc;
     237             : 
     238           1 :         pqpair = spdk_zmalloc(sizeof(*pqpair), 64, NULL, SPDK_ENV_SOCKET_ID_ANY, SPDK_MALLOC_SHARE);
     239           1 :         if (pqpair == NULL) {
     240           0 :                 return -ENOMEM;
     241             :         }
     242             : 
     243           1 :         pqpair->num_entries = num_entries;
     244           1 :         pqpair->flags.delay_cmd_submit = 0;
     245           1 :         pqpair->pcie_state = NVME_PCIE_QPAIR_READY;
     246             : 
     247           1 :         ctrlr->adminq = &pqpair->qpair;
     248             : 
     249           1 :         rc = nvme_qpair_init(ctrlr->adminq,
     250             :                              0, /* qpair ID */
     251             :                              ctrlr,
     252             :                              SPDK_NVME_QPRIO_URGENT,
     253             :                              num_entries,
     254             :                              false);
     255           1 :         if (rc != 0) {
     256           0 :                 return rc;
     257             :         }
     258             : 
     259           1 :         pqpair->stat = spdk_zmalloc(sizeof(*pqpair->stat), 64, NULL, SPDK_ENV_SOCKET_ID_ANY,
     260             :                                     SPDK_MALLOC_SHARE);
     261           1 :         if (!pqpair->stat) {
     262           0 :                 SPDK_ERRLOG("Failed to allocate admin qpair statistics\n");
     263           0 :                 return -ENOMEM;
     264             :         }
     265             : 
     266           1 :         return nvme_pcie_qpair_construct(ctrlr->adminq, NULL);
     267             : }
     268             : 
     269             : /**
     270             :  * Note: the ctrlr_lock must be held when calling this function.
     271             :  */
     272             : void
     273           0 : nvme_pcie_qpair_insert_pending_admin_request(struct spdk_nvme_qpair *qpair,
     274             :                 struct nvme_request *req, struct spdk_nvme_cpl *cpl)
     275             : {
     276           0 :         struct spdk_nvme_ctrlr          *ctrlr = qpair->ctrlr;
     277           0 :         struct nvme_request             *active_req = req;
     278             :         struct spdk_nvme_ctrlr_process  *active_proc;
     279             : 
     280             :         /*
     281             :          * The admin request is from another process. Move to the per
     282             :          *  process list for that process to handle it later.
     283             :          */
     284           0 :         assert(nvme_qpair_is_admin_queue(qpair));
     285           0 :         assert(active_req->pid != getpid());
     286             : 
     287           0 :         active_proc = nvme_ctrlr_get_process(ctrlr, active_req->pid);
     288           0 :         if (active_proc) {
     289             :                 /* Save the original completion information */
     290           0 :                 memcpy(&active_req->cpl, cpl, sizeof(*cpl));
     291           0 :                 STAILQ_INSERT_TAIL(&active_proc->active_reqs, active_req, stailq);
     292             :         } else {
     293           0 :                 SPDK_ERRLOG("The owning process (pid %d) is not found. Dropping the request.\n",
     294             :                             active_req->pid);
     295           0 :                 nvme_cleanup_user_req(active_req);
     296           0 :                 nvme_free_request(active_req);
     297             :         }
     298           0 : }
     299             : 
     300             : /**
     301             :  * Note: the ctrlr_lock must be held when calling this function.
     302             :  */
     303             : void
     304           0 : nvme_pcie_qpair_complete_pending_admin_request(struct spdk_nvme_qpair *qpair)
     305             : {
     306           0 :         struct spdk_nvme_ctrlr          *ctrlr = qpair->ctrlr;
     307             :         struct nvme_request             *req, *tmp_req;
     308           0 :         pid_t                           pid = getpid();
     309             :         struct spdk_nvme_ctrlr_process  *proc;
     310             : 
     311             :         /*
     312             :          * Check whether there is any pending admin request from
     313             :          * other active processes.
     314             :          */
     315           0 :         assert(nvme_qpair_is_admin_queue(qpair));
     316             : 
     317           0 :         proc = nvme_ctrlr_get_current_process(ctrlr);
     318           0 :         if (!proc) {
     319           0 :                 SPDK_ERRLOG("the active process (pid %d) is not found for this controller.\n", pid);
     320           0 :                 assert(proc);
     321           0 :                 return;
     322             :         }
     323             : 
     324           0 :         STAILQ_FOREACH_SAFE(req, &proc->active_reqs, stailq, tmp_req) {
     325           0 :                 STAILQ_REMOVE(&proc->active_reqs, req, nvme_request, stailq);
     326             : 
     327           0 :                 assert(req->pid == pid);
     328             : 
     329           0 :                 nvme_complete_request(req->cb_fn, req->cb_arg, qpair, req, &req->cpl);
     330             :         }
     331             : }
     332             : 
     333             : int
     334           7 : nvme_pcie_ctrlr_cmd_create_io_cq(struct spdk_nvme_ctrlr *ctrlr,
     335             :                                  struct spdk_nvme_qpair *io_que, spdk_nvme_cmd_cb cb_fn,
     336             :                                  void *cb_arg)
     337             : {
     338           7 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(io_que);
     339             :         struct nvme_request *req;
     340             :         struct spdk_nvme_cmd *cmd;
     341             : 
     342           7 :         req = nvme_allocate_request_null(ctrlr->adminq, cb_fn, cb_arg);
     343           7 :         if (req == NULL) {
     344           2 :                 return -ENOMEM;
     345             :         }
     346             : 
     347           5 :         cmd = &req->cmd;
     348           5 :         cmd->opc = SPDK_NVME_OPC_CREATE_IO_CQ;
     349             : 
     350           5 :         cmd->cdw10_bits.create_io_q.qid = io_que->id;
     351           5 :         cmd->cdw10_bits.create_io_q.qsize = pqpair->num_entries - 1;
     352             : 
     353           5 :         cmd->cdw11_bits.create_io_cq.pc = 1;
     354           5 :         cmd->dptr.prp.prp1 = pqpair->cpl_bus_addr;
     355             : 
     356           5 :         return nvme_ctrlr_submit_admin_request(ctrlr, req);
     357             : }
     358             : 
     359             : int
     360           5 : nvme_pcie_ctrlr_cmd_create_io_sq(struct spdk_nvme_ctrlr *ctrlr,
     361             :                                  struct spdk_nvme_qpair *io_que, spdk_nvme_cmd_cb cb_fn, void *cb_arg)
     362             : {
     363           5 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(io_que);
     364             :         struct nvme_request *req;
     365             :         struct spdk_nvme_cmd *cmd;
     366             : 
     367           5 :         req = nvme_allocate_request_null(ctrlr->adminq, cb_fn, cb_arg);
     368           5 :         if (req == NULL) {
     369           1 :                 return -ENOMEM;
     370             :         }
     371             : 
     372           4 :         cmd = &req->cmd;
     373           4 :         cmd->opc = SPDK_NVME_OPC_CREATE_IO_SQ;
     374             : 
     375           4 :         cmd->cdw10_bits.create_io_q.qid = io_que->id;
     376           4 :         cmd->cdw10_bits.create_io_q.qsize = pqpair->num_entries - 1;
     377           4 :         cmd->cdw11_bits.create_io_sq.pc = 1;
     378           4 :         cmd->cdw11_bits.create_io_sq.qprio = io_que->qprio;
     379           4 :         cmd->cdw11_bits.create_io_sq.cqid = io_que->id;
     380           4 :         cmd->dptr.prp.prp1 = pqpair->cmd_bus_addr;
     381             : 
     382           4 :         return nvme_ctrlr_submit_admin_request(ctrlr, req);
     383             : }
     384             : 
     385             : int
     386           3 : nvme_pcie_ctrlr_cmd_delete_io_cq(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair,
     387             :                                  spdk_nvme_cmd_cb cb_fn, void *cb_arg)
     388             : {
     389             :         struct nvme_request *req;
     390             :         struct spdk_nvme_cmd *cmd;
     391             : 
     392           3 :         req = nvme_allocate_request_null(ctrlr->adminq, cb_fn, cb_arg);
     393           3 :         if (req == NULL) {
     394           1 :                 return -ENOMEM;
     395             :         }
     396             : 
     397           2 :         cmd = &req->cmd;
     398           2 :         cmd->opc = SPDK_NVME_OPC_DELETE_IO_CQ;
     399           2 :         cmd->cdw10_bits.delete_io_q.qid = qpair->id;
     400             : 
     401           2 :         return nvme_ctrlr_submit_admin_request(ctrlr, req);
     402             : }
     403             : 
     404             : int
     405           2 : nvme_pcie_ctrlr_cmd_delete_io_sq(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair,
     406             :                                  spdk_nvme_cmd_cb cb_fn, void *cb_arg)
     407             : {
     408             :         struct nvme_request *req;
     409             :         struct spdk_nvme_cmd *cmd;
     410             : 
     411           2 :         req = nvme_allocate_request_null(ctrlr->adminq, cb_fn, cb_arg);
     412           2 :         if (req == NULL) {
     413           1 :                 return -ENOMEM;
     414             :         }
     415             : 
     416           1 :         cmd = &req->cmd;
     417           1 :         cmd->opc = SPDK_NVME_OPC_DELETE_IO_SQ;
     418           1 :         cmd->cdw10_bits.delete_io_q.qid = qpair->id;
     419             : 
     420           1 :         return nvme_ctrlr_submit_admin_request(ctrlr, req);
     421             : }
     422             : 
     423             : static void
     424           1 : nvme_completion_sq_error_delete_cq_cb(void *arg, const struct spdk_nvme_cpl *cpl)
     425             : {
     426           1 :         struct spdk_nvme_qpair *qpair = arg;
     427           1 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     428             : 
     429           1 :         if (spdk_nvme_cpl_is_error(cpl)) {
     430           0 :                 SPDK_ERRLOG("delete_io_cq failed!\n");
     431             :         }
     432             : 
     433           1 :         pqpair->pcie_state = NVME_PCIE_QPAIR_FAILED;
     434           1 : }
     435             : 
     436             : static void
     437           3 : nvme_completion_create_sq_cb(void *arg, const struct spdk_nvme_cpl *cpl)
     438             : {
     439           3 :         struct spdk_nvme_qpair *qpair = arg;
     440           3 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     441           3 :         struct spdk_nvme_ctrlr  *ctrlr = qpair->ctrlr;
     442           3 :         struct nvme_pcie_ctrlr  *pctrlr = nvme_pcie_ctrlr(ctrlr);
     443             :         int rc;
     444             : 
     445           3 :         if (pqpair->flags.defer_destruction) {
     446             :                 /* This qpair was deleted by the application while the
     447             :                  * connection was still in progress.  We had to wait
     448             :                  * to free the qpair resources until this outstanding
     449             :                  * command was completed.  Now that we have the completion
     450             :                  * free it now.
     451             :                  */
     452           0 :                 nvme_pcie_qpair_destroy(qpair);
     453           0 :                 return;
     454             :         }
     455             : 
     456           3 :         if (spdk_nvme_cpl_is_error(cpl)) {
     457           1 :                 SPDK_ERRLOG("nvme_create_io_sq failed, deleting cq!\n");
     458           1 :                 rc = nvme_pcie_ctrlr_cmd_delete_io_cq(qpair->ctrlr, qpair, nvme_completion_sq_error_delete_cq_cb,
     459             :                                                       qpair);
     460           1 :                 if (rc != 0) {
     461           0 :                         SPDK_ERRLOG("Failed to send request to delete_io_cq with rc=%d\n", rc);
     462           0 :                         pqpair->pcie_state = NVME_PCIE_QPAIR_FAILED;
     463             :                 }
     464           1 :                 return;
     465             :         }
     466           2 :         pqpair->pcie_state = NVME_PCIE_QPAIR_READY;
     467           2 :         if (ctrlr->shadow_doorbell) {
     468           1 :                 pqpair->shadow_doorbell.sq_tdbl = ctrlr->shadow_doorbell + (2 * qpair->id + 0) *
     469           1 :                                                   pctrlr->doorbell_stride_u32;
     470           1 :                 pqpair->shadow_doorbell.cq_hdbl = ctrlr->shadow_doorbell + (2 * qpair->id + 1) *
     471           1 :                                                   pctrlr->doorbell_stride_u32;
     472           1 :                 pqpair->shadow_doorbell.sq_eventidx = ctrlr->eventidx + (2 * qpair->id + 0) *
     473           1 :                                                       pctrlr->doorbell_stride_u32;
     474           1 :                 pqpair->shadow_doorbell.cq_eventidx = ctrlr->eventidx + (2 * qpair->id + 1) *
     475           1 :                                                       pctrlr->doorbell_stride_u32;
     476           1 :                 pqpair->flags.has_shadow_doorbell = 1;
     477             :         } else {
     478           1 :                 pqpair->flags.has_shadow_doorbell = 0;
     479             :         }
     480           2 :         nvme_pcie_qpair_reset(qpair);
     481             : 
     482             : }
     483             : 
     484             : static void
     485           4 : nvme_completion_create_cq_cb(void *arg, const struct spdk_nvme_cpl *cpl)
     486             : {
     487           4 :         struct spdk_nvme_qpair *qpair = arg;
     488           4 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     489             :         int rc;
     490             : 
     491           4 :         if (pqpair->flags.defer_destruction) {
     492             :                 /* This qpair was deleted by the application while the
     493             :                  * connection was still in progress.  We had to wait
     494             :                  * to free the qpair resources until this outstanding
     495             :                  * command was completed.  Now that we have the completion
     496             :                  * free it now.
     497             :                  */
     498           0 :                 nvme_pcie_qpair_destroy(qpair);
     499           0 :                 return;
     500             :         }
     501             : 
     502           4 :         if (spdk_nvme_cpl_is_error(cpl)) {
     503           1 :                 pqpair->pcie_state = NVME_PCIE_QPAIR_FAILED;
     504           1 :                 SPDK_ERRLOG("nvme_create_io_cq failed!\n");
     505           1 :                 return;
     506             :         }
     507             : 
     508           3 :         rc = nvme_pcie_ctrlr_cmd_create_io_sq(qpair->ctrlr, qpair, nvme_completion_create_sq_cb, qpair);
     509             : 
     510           3 :         if (rc != 0) {
     511           0 :                 SPDK_ERRLOG("Failed to send request to create_io_sq, deleting cq!\n");
     512           0 :                 rc = nvme_pcie_ctrlr_cmd_delete_io_cq(qpair->ctrlr, qpair, nvme_completion_sq_error_delete_cq_cb,
     513             :                                                       qpair);
     514           0 :                 if (rc != 0) {
     515           0 :                         SPDK_ERRLOG("Failed to send request to delete_io_cq with rc=%d\n", rc);
     516           0 :                         pqpair->pcie_state = NVME_PCIE_QPAIR_FAILED;
     517             :                 }
     518           0 :                 return;
     519             :         }
     520           3 :         pqpair->pcie_state = NVME_PCIE_QPAIR_WAIT_FOR_SQ;
     521             : }
     522             : 
     523             : static int
     524           5 : _nvme_pcie_ctrlr_create_io_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair,
     525             :                                  uint16_t qid)
     526             : {
     527           5 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     528             :         int     rc;
     529             : 
     530             :         /* Statistics may already be allocated in the case of controller reset */
     531           5 :         if (qpair->poll_group) {
     532           5 :                 struct nvme_pcie_poll_group *group = SPDK_CONTAINEROF(qpair->poll_group,
     533             :                                                      struct nvme_pcie_poll_group, group);
     534             : 
     535           5 :                 pqpair->stat = &group->stats;
     536           5 :                 pqpair->shared_stats = true;
     537             :         } else {
     538           0 :                 if (pqpair->stat == NULL) {
     539           0 :                         pqpair->stat = calloc(1, sizeof(*pqpair->stat));
     540           0 :                         if (!pqpair->stat) {
     541           0 :                                 SPDK_ERRLOG("Failed to allocate qpair statistics\n");
     542           0 :                                 nvme_qpair_set_state(qpair, NVME_QPAIR_DISCONNECTED);
     543           0 :                                 return -ENOMEM;
     544             :                         }
     545             :                 }
     546             :         }
     547             : 
     548           5 :         rc = nvme_pcie_ctrlr_cmd_create_io_cq(ctrlr, qpair, nvme_completion_create_cq_cb, qpair);
     549             : 
     550           5 :         if (rc != 0) {
     551           1 :                 SPDK_ERRLOG("Failed to send request to create_io_cq\n");
     552           1 :                 nvme_qpair_set_state(qpair, NVME_QPAIR_DISCONNECTED);
     553           1 :                 return rc;
     554             :         }
     555           4 :         pqpair->pcie_state = NVME_PCIE_QPAIR_WAIT_FOR_CQ;
     556           4 :         return 0;
     557             : }
     558             : 
     559             : int
     560           5 : nvme_pcie_ctrlr_connect_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair)
     561             : {
     562           5 :         int rc = 0;
     563             : 
     564           5 :         if (!nvme_qpair_is_admin_queue(qpair)) {
     565           5 :                 rc = _nvme_pcie_ctrlr_create_io_qpair(ctrlr, qpair, qpair->id);
     566             :         } else {
     567           0 :                 nvme_qpair_set_state(qpair, NVME_QPAIR_CONNECTED);
     568             :         }
     569             : 
     570           5 :         return rc;
     571             : }
     572             : 
     573             : void
     574           0 : nvme_pcie_ctrlr_disconnect_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair)
     575             : {
     576           0 :         if (!nvme_qpair_is_admin_queue(qpair) || !ctrlr->is_disconnecting) {
     577           0 :                 nvme_transport_ctrlr_disconnect_qpair_done(qpair);
     578             :         } else {
     579             :                 /* If this function is called for the admin qpair via spdk_nvme_ctrlr_reset()
     580             :                  * or spdk_nvme_ctrlr_disconnect(), initiate a Controller Level Reset.
     581             :                  * Then we can abort trackers safely because the Controller Level Reset deletes
     582             :                  * all I/O SQ/CQs.
     583             :                  */
     584           0 :                 nvme_ctrlr_disable(ctrlr);
     585             :         }
     586           0 : }
     587             : 
     588             : /* Used when dst points to MMIO (i.e. CMB) in a virtual machine - in these cases we must
     589             :  * not use wide instructions because QEMU will not emulate such instructions to MMIO space.
     590             :  * So this function ensures we only copy 8 bytes at a time.
     591             :  */
     592             : static inline void
     593           0 : nvme_pcie_copy_command_mmio(struct spdk_nvme_cmd *dst, const struct spdk_nvme_cmd *src)
     594             : {
     595           0 :         uint64_t *dst64 = (uint64_t *)dst;
     596           0 :         const uint64_t *src64 = (const uint64_t *)src;
     597             :         uint32_t i;
     598             : 
     599           0 :         for (i = 0; i < sizeof(*dst) / 8; i++) {
     600           0 :                 dst64[i] = src64[i];
     601             :         }
     602           0 : }
     603             : 
     604             : static inline void
     605           0 : nvme_pcie_copy_command(struct spdk_nvme_cmd *dst, const struct spdk_nvme_cmd *src)
     606             : {
     607             :         /* dst and src are known to be non-overlapping and 64-byte aligned. */
     608             : #if defined(__SSE2__)
     609           0 :         __m128i *d128 = (__m128i *)dst;
     610           0 :         const __m128i *s128 = (const __m128i *)src;
     611             : 
     612           0 :         _mm_stream_si128(&d128[0], _mm_load_si128(&s128[0]));
     613           0 :         _mm_stream_si128(&d128[1], _mm_load_si128(&s128[1]));
     614           0 :         _mm_stream_si128(&d128[2], _mm_load_si128(&s128[2]));
     615           0 :         _mm_stream_si128(&d128[3], _mm_load_si128(&s128[3]));
     616             : #else
     617             :         *dst = *src;
     618             : #endif
     619           0 : }
     620             : 
     621             : void
     622           0 : nvme_pcie_qpair_submit_tracker(struct spdk_nvme_qpair *qpair, struct nvme_tracker *tr)
     623             : {
     624             :         struct nvme_request     *req;
     625           0 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     626           0 :         struct spdk_nvme_ctrlr  *ctrlr = qpair->ctrlr;
     627             : 
     628           0 :         req = tr->req;
     629           0 :         assert(req != NULL);
     630             : 
     631           0 :         spdk_trace_record(TRACE_NVME_PCIE_SUBMIT, qpair->id, 0, (uintptr_t)req, req->cb_arg,
     632             :                           (uint32_t)req->cmd.cid, (uint32_t)req->cmd.opc,
     633             :                           req->cmd.cdw10, req->cmd.cdw11, req->cmd.cdw12,
     634             :                           pqpair->qpair.queue_depth);
     635             : 
     636           0 :         if (req->cmd.fuse) {
     637             :                 /*
     638             :                  * Keep track of the fuse operation sequence so that we ring the doorbell only
     639             :                  * after the second fuse is submitted.
     640             :                  */
     641           0 :                 qpair->last_fuse = req->cmd.fuse;
     642             :         }
     643             : 
     644             :         /* Don't use wide instructions to copy NVMe command, this is limited by QEMU
     645             :          * virtual NVMe controller, the maximum access width is 8 Bytes for one time.
     646             :          */
     647           0 :         if (spdk_unlikely((ctrlr->quirks & NVME_QUIRK_MAXIMUM_PCI_ACCESS_WIDTH) && pqpair->sq_in_cmb)) {
     648           0 :                 nvme_pcie_copy_command_mmio(&pqpair->cmd[pqpair->sq_tail], &req->cmd);
     649             :         } else {
     650             :                 /* Copy the command from the tracker to the submission queue. */
     651           0 :                 nvme_pcie_copy_command(&pqpair->cmd[pqpair->sq_tail], &req->cmd);
     652             :         }
     653             : 
     654           0 :         if (spdk_unlikely(++pqpair->sq_tail == pqpair->num_entries)) {
     655           0 :                 pqpair->sq_tail = 0;
     656             :         }
     657             : 
     658           0 :         if (spdk_unlikely(pqpair->sq_tail == pqpair->sq_head)) {
     659           0 :                 SPDK_ERRLOG("sq_tail is passing sq_head!\n");
     660             :         }
     661             : 
     662           0 :         if (!pqpair->flags.delay_cmd_submit) {
     663           0 :                 nvme_pcie_qpair_ring_sq_doorbell(qpair);
     664             :         }
     665           0 : }
     666             : 
     667             : void
     668           0 : nvme_pcie_qpair_complete_tracker(struct spdk_nvme_qpair *qpair, struct nvme_tracker *tr,
     669             :                                  struct spdk_nvme_cpl *cpl, bool print_on_error)
     670             : {
     671           0 :         struct nvme_pcie_qpair          *pqpair = nvme_pcie_qpair(qpair);
     672             :         struct nvme_request             *req;
     673             :         bool                            retry, error;
     674             :         bool                            print_error;
     675             : 
     676           0 :         req = tr->req;
     677             : 
     678           0 :         spdk_trace_record(TRACE_NVME_PCIE_COMPLETE, qpair->id, 0, (uintptr_t)req, req->cb_arg,
     679             :                           (uint32_t)req->cmd.cid, (uint32_t)cpl->status_raw, pqpair->qpair.queue_depth);
     680             : 
     681           0 :         assert(req != NULL);
     682             : 
     683           0 :         error = spdk_nvme_cpl_is_error(cpl);
     684           0 :         retry = error && nvme_completion_is_retry(cpl) &&
     685           0 :                 req->retries < pqpair->retry_count;
     686           0 :         print_error = error && print_on_error && !qpair->ctrlr->opts.disable_error_logging;
     687             : 
     688           0 :         if (print_error) {
     689           0 :                 spdk_nvme_qpair_print_command(qpair, &req->cmd);
     690             :         }
     691             : 
     692           0 :         if (print_error || SPDK_DEBUGLOG_FLAG_ENABLED("nvme")) {
     693           0 :                 spdk_nvme_qpair_print_completion(qpair, cpl);
     694             :         }
     695             : 
     696           0 :         assert(cpl->cid == req->cmd.cid);
     697             : 
     698           0 :         if (retry) {
     699           0 :                 req->retries++;
     700           0 :                 nvme_pcie_qpair_submit_tracker(qpair, tr);
     701             :         } else {
     702           0 :                 TAILQ_REMOVE(&pqpair->outstanding_tr, tr, tq_list);
     703           0 :                 pqpair->qpair.queue_depth--;
     704             : 
     705             :                 /* Only check admin requests from different processes. */
     706           0 :                 if (nvme_qpair_is_admin_queue(qpair) && req->pid != getpid()) {
     707           0 :                         nvme_pcie_qpair_insert_pending_admin_request(qpair, req, cpl);
     708             :                 } else {
     709           0 :                         nvme_complete_request(tr->cb_fn, tr->cb_arg, qpair, req, cpl);
     710             :                 }
     711             : 
     712           0 :                 tr->req = NULL;
     713             : 
     714           0 :                 TAILQ_INSERT_HEAD(&pqpair->free_tr, tr, tq_list);
     715             :         }
     716           0 : }
     717             : 
     718             : void
     719           0 : nvme_pcie_qpair_manual_complete_tracker(struct spdk_nvme_qpair *qpair,
     720             :                                         struct nvme_tracker *tr, uint32_t sct, uint32_t sc, uint32_t dnr,
     721             :                                         bool print_on_error)
     722             : {
     723           0 :         struct spdk_nvme_cpl    cpl;
     724             : 
     725           0 :         memset(&cpl, 0, sizeof(cpl));
     726           0 :         cpl.sqid = qpair->id;
     727           0 :         cpl.cid = tr->cid;
     728           0 :         cpl.status.sct = sct;
     729           0 :         cpl.status.sc = sc;
     730           0 :         cpl.status.dnr = dnr;
     731           0 :         nvme_pcie_qpair_complete_tracker(qpair, tr, &cpl, print_on_error);
     732           0 : }
     733             : 
     734             : void
     735           0 : nvme_pcie_qpair_abort_trackers(struct spdk_nvme_qpair *qpair, uint32_t dnr)
     736             : {
     737           0 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     738             :         struct nvme_tracker *tr, *temp, *last;
     739             : 
     740           0 :         last = TAILQ_LAST(&pqpair->outstanding_tr, nvme_outstanding_tr_head);
     741             : 
     742             :         /* Abort previously submitted (outstanding) trs */
     743           0 :         TAILQ_FOREACH_SAFE(tr, &pqpair->outstanding_tr, tq_list, temp) {
     744           0 :                 if (!qpair->ctrlr->opts.disable_error_logging) {
     745           0 :                         SPDK_ERRLOG("aborting outstanding command\n");
     746             :                 }
     747           0 :                 nvme_pcie_qpair_manual_complete_tracker(qpair, tr, SPDK_NVME_SCT_GENERIC,
     748             :                                                         SPDK_NVME_SC_ABORTED_BY_REQUEST, dnr, true);
     749             : 
     750           0 :                 if (tr == last) {
     751           0 :                         break;
     752             :                 }
     753             :         }
     754           0 : }
     755             : 
     756             : void
     757           1 : nvme_pcie_admin_qpair_abort_aers(struct spdk_nvme_qpair *qpair)
     758             : {
     759           1 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     760             :         struct nvme_tracker     *tr;
     761             : 
     762           1 :         tr = TAILQ_FIRST(&pqpair->outstanding_tr);
     763           1 :         while (tr != NULL) {
     764           0 :                 assert(tr->req != NULL);
     765           0 :                 if (tr->req->cmd.opc == SPDK_NVME_OPC_ASYNC_EVENT_REQUEST) {
     766           0 :                         nvme_pcie_qpair_manual_complete_tracker(qpair, tr,
     767             :                                                                 SPDK_NVME_SCT_GENERIC, SPDK_NVME_SC_ABORTED_SQ_DELETION, 0,
     768             :                                                                 false);
     769           0 :                         tr = TAILQ_FIRST(&pqpair->outstanding_tr);
     770             :                 } else {
     771           0 :                         tr = TAILQ_NEXT(tr, tq_list);
     772             :                 }
     773             :         }
     774           1 : }
     775             : 
     776             : void
     777           1 : nvme_pcie_admin_qpair_destroy(struct spdk_nvme_qpair *qpair)
     778             : {
     779           1 :         nvme_pcie_admin_qpair_abort_aers(qpair);
     780           1 : }
     781             : 
     782             : void
     783           0 : nvme_pcie_qpair_abort_reqs(struct spdk_nvme_qpair *qpair, uint32_t dnr)
     784             : {
     785           0 :         nvme_pcie_qpair_abort_trackers(qpair, dnr);
     786           0 : }
     787             : 
     788             : static void
     789           0 : nvme_pcie_qpair_check_timeout(struct spdk_nvme_qpair *qpair)
     790             : {
     791             :         uint64_t t02;
     792             :         struct nvme_tracker *tr, *tmp;
     793           0 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     794           0 :         struct spdk_nvme_ctrlr *ctrlr = qpair->ctrlr;
     795             :         struct spdk_nvme_ctrlr_process *active_proc;
     796             : 
     797             :         /* Don't check timeouts during controller initialization. */
     798           0 :         if (ctrlr->state != NVME_CTRLR_STATE_READY) {
     799           0 :                 return;
     800             :         }
     801             : 
     802           0 :         if (nvme_qpair_is_admin_queue(qpair)) {
     803           0 :                 active_proc = nvme_ctrlr_get_current_process(ctrlr);
     804             :         } else {
     805           0 :                 active_proc = qpair->active_proc;
     806             :         }
     807             : 
     808             :         /* Only check timeouts if the current process has a timeout callback. */
     809           0 :         if (active_proc == NULL || active_proc->timeout_cb_fn == NULL) {
     810           0 :                 return;
     811             :         }
     812             : 
     813           0 :         t02 = spdk_get_ticks();
     814           0 :         TAILQ_FOREACH_SAFE(tr, &pqpair->outstanding_tr, tq_list, tmp) {
     815           0 :                 assert(tr->req != NULL);
     816             : 
     817           0 :                 if (nvme_request_check_timeout(tr->req, tr->cid, active_proc, t02)) {
     818             :                         /*
     819             :                          * The requests are in order, so as soon as one has not timed out,
     820             :                          * stop iterating.
     821             :                          */
     822           0 :                         break;
     823             :                 }
     824             :         }
     825             : }
     826             : 
     827             : int32_t
     828           0 : nvme_pcie_qpair_process_completions(struct spdk_nvme_qpair *qpair, uint32_t max_completions)
     829             : {
     830           0 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     831             :         struct nvme_tracker     *tr;
     832             :         struct spdk_nvme_cpl    *cpl, *next_cpl;
     833           0 :         uint32_t                 num_completions = 0;
     834           0 :         struct spdk_nvme_ctrlr  *ctrlr = qpair->ctrlr;
     835             :         uint16_t                 next_cq_head;
     836             :         uint8_t                  next_phase;
     837           0 :         bool                     next_is_valid = false;
     838             :         int                      rc;
     839             : 
     840           0 :         if (spdk_unlikely(pqpair->pcie_state == NVME_PCIE_QPAIR_FAILED)) {
     841           0 :                 return -ENXIO;
     842             :         }
     843             : 
     844           0 :         if (spdk_unlikely(nvme_qpair_get_state(qpair) == NVME_QPAIR_CONNECTING)) {
     845           0 :                 if (pqpair->pcie_state == NVME_PCIE_QPAIR_READY) {
     846             :                         /* It is possible that another thread set the pcie_state to
     847             :                          * QPAIR_READY, if it polled the adminq and processed the SQ
     848             :                          * completion for this qpair.  So check for that condition
     849             :                          * here and then update the qpair's state to CONNECTED, since
     850             :                          * we can only set the qpair state from the qpair's thread.
     851             :                          * (Note: this fixed issue #2157.)
     852             :                          */
     853           0 :                         nvme_qpair_set_state(qpair, NVME_QPAIR_CONNECTED);
     854           0 :                 } else if (pqpair->pcie_state == NVME_PCIE_QPAIR_FAILED) {
     855           0 :                         nvme_qpair_set_state(qpair, NVME_QPAIR_DISCONNECTED);
     856           0 :                         return -ENXIO;
     857             :                 } else {
     858           0 :                         rc = spdk_nvme_qpair_process_completions(ctrlr->adminq, 0);
     859           0 :                         if (rc < 0) {
     860           0 :                                 return rc;
     861           0 :                         } else if (pqpair->pcie_state == NVME_PCIE_QPAIR_FAILED) {
     862           0 :                                 nvme_qpair_set_state(qpair, NVME_QPAIR_DISCONNECTED);
     863           0 :                                 return -ENXIO;
     864             :                         }
     865             :                 }
     866           0 :                 return 0;
     867             :         }
     868             : 
     869           0 :         if (spdk_unlikely(nvme_qpair_is_admin_queue(qpair))) {
     870           0 :                 nvme_ctrlr_lock(ctrlr);
     871             :         }
     872             : 
     873           0 :         if (max_completions == 0 || max_completions > pqpair->max_completions_cap) {
     874             :                 /*
     875             :                  * max_completions == 0 means unlimited, but complete at most
     876             :                  * max_completions_cap batch of I/O at a time so that the completion
     877             :                  * queue doorbells don't wrap around.
     878             :                  */
     879           0 :                 max_completions = pqpair->max_completions_cap;
     880             :         }
     881             : 
     882           0 :         pqpair->stat->polls++;
     883             : 
     884             :         while (1) {
     885           0 :                 cpl = &pqpair->cpl[pqpair->cq_head];
     886             : 
     887           0 :                 if (!next_is_valid && cpl->status.p != pqpair->flags.phase) {
     888           0 :                         break;
     889             :                 }
     890             : 
     891           0 :                 if (spdk_likely(pqpair->cq_head + 1 != pqpair->num_entries)) {
     892           0 :                         next_cq_head = pqpair->cq_head + 1;
     893           0 :                         next_phase = pqpair->flags.phase;
     894             :                 } else {
     895           0 :                         next_cq_head = 0;
     896           0 :                         next_phase = !pqpair->flags.phase;
     897             :                 }
     898           0 :                 next_cpl = &pqpair->cpl[next_cq_head];
     899           0 :                 next_is_valid = (next_cpl->status.p == next_phase);
     900           0 :                 if (next_is_valid) {
     901           0 :                         __builtin_prefetch(&pqpair->tr[next_cpl->cid]);
     902             :                 }
     903             : 
     904             : #if defined(__PPC64__) || defined(__riscv) || defined(__loongarch__)
     905             :                 /*
     906             :                  * This memory barrier prevents reordering of:
     907             :                  * - load after store from/to tr
     908             :                  * - load after load cpl phase and cpl cid
     909             :                  */
     910             :                 spdk_mb();
     911             : #elif defined(__aarch64__)
     912             :                 __asm volatile("dmb oshld" ::: "memory");
     913             : #endif
     914             : 
     915           0 :                 if (spdk_unlikely(++pqpair->cq_head == pqpair->num_entries)) {
     916           0 :                         pqpair->cq_head = 0;
     917           0 :                         pqpair->flags.phase = !pqpair->flags.phase;
     918             :                 }
     919             : 
     920           0 :                 tr = &pqpair->tr[cpl->cid];
     921           0 :                 pqpair->sq_head = cpl->sqhd;
     922             : 
     923           0 :                 if (tr->req) {
     924             :                         /* Prefetch the req's STAILQ_ENTRY since we'll need to access it
     925             :                          * as part of putting the req back on the qpair's free list.
     926             :                          */
     927           0 :                         __builtin_prefetch(&tr->req->stailq);
     928           0 :                         nvme_pcie_qpair_complete_tracker(qpair, tr, cpl, true);
     929             :                 } else {
     930           0 :                         SPDK_ERRLOG("cpl does not map to outstanding cmd\n");
     931           0 :                         spdk_nvme_qpair_print_completion(qpair, cpl);
     932           0 :                         assert(0);
     933             :                 }
     934             : 
     935           0 :                 if (++num_completions == max_completions) {
     936           0 :                         break;
     937             :                 }
     938             :         }
     939             : 
     940           0 :         if (num_completions > 0) {
     941           0 :                 pqpair->stat->completions += num_completions;
     942           0 :                 nvme_pcie_qpair_ring_cq_doorbell(qpair);
     943             :         } else {
     944           0 :                 pqpair->stat->idle_polls++;
     945             :         }
     946             : 
     947           0 :         if (pqpair->flags.delay_cmd_submit) {
     948           0 :                 if (pqpair->last_sq_tail != pqpair->sq_tail) {
     949           0 :                         nvme_pcie_qpair_ring_sq_doorbell(qpair);
     950           0 :                         pqpair->last_sq_tail = pqpair->sq_tail;
     951             :                 }
     952             :         }
     953             : 
     954           0 :         if (spdk_unlikely(ctrlr->timeout_enabled)) {
     955             :                 /*
     956             :                  * User registered for timeout callback
     957             :                  */
     958           0 :                 nvme_pcie_qpair_check_timeout(qpair);
     959             :         }
     960             : 
     961             :         /* Before returning, complete any pending admin request or
     962             :          * process the admin qpair disconnection.
     963             :          */
     964           0 :         if (spdk_unlikely(nvme_qpair_is_admin_queue(qpair))) {
     965           0 :                 nvme_pcie_qpair_complete_pending_admin_request(qpair);
     966             : 
     967           0 :                 if (nvme_qpair_get_state(qpair) == NVME_QPAIR_DISCONNECTING) {
     968           0 :                         rc = nvme_ctrlr_disable_poll(qpair->ctrlr);
     969           0 :                         if (rc != -EAGAIN) {
     970           0 :                                 nvme_transport_ctrlr_disconnect_qpair_done(qpair);
     971             :                         }
     972             :                 }
     973             : 
     974           0 :                 nvme_ctrlr_unlock(ctrlr);
     975             :         }
     976             : 
     977           0 :         if (spdk_unlikely(pqpair->flags.has_pending_vtophys_failures)) {
     978             :                 struct nvme_tracker *tr, *tmp;
     979             : 
     980           0 :                 TAILQ_FOREACH_SAFE(tr, &pqpair->outstanding_tr, tq_list, tmp) {
     981           0 :                         if (tr->bad_vtophys) {
     982           0 :                                 tr->bad_vtophys = 0;
     983           0 :                                 nvme_pcie_fail_request_bad_vtophys(qpair, tr);
     984             :                         }
     985             :                 }
     986           0 :                 pqpair->flags.has_pending_vtophys_failures = 0;
     987             :         }
     988             : 
     989           0 :         return num_completions;
     990             : }
     991             : 
     992             : int
     993           4 : nvme_pcie_qpair_destroy(struct spdk_nvme_qpair *qpair)
     994             : {
     995           4 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     996             : 
     997           4 :         if (nvme_qpair_is_admin_queue(qpair)) {
     998           1 :                 nvme_pcie_admin_qpair_destroy(qpair);
     999             :         }
    1000             :         /*
    1001             :          * We check sq_vaddr and cq_vaddr to see if the user specified the memory
    1002             :          * buffers when creating the I/O queue.
    1003             :          * If the user specified them, we cannot free that memory.
    1004             :          * Nor do we free it if it's in the CMB.
    1005             :          */
    1006           4 :         if (!pqpair->sq_vaddr && pqpair->cmd && !pqpair->sq_in_cmb) {
    1007           2 :                 spdk_free(pqpair->cmd);
    1008             :         }
    1009           4 :         if (!pqpair->cq_vaddr && pqpair->cpl) {
    1010           2 :                 spdk_free(pqpair->cpl);
    1011             :         }
    1012           4 :         if (pqpair->tr) {
    1013           4 :                 spdk_free(pqpair->tr);
    1014             :         }
    1015             : 
    1016           4 :         nvme_qpair_deinit(qpair);
    1017             : 
    1018           4 :         if (!pqpair->shared_stats && (!qpair->active_proc ||
    1019           0 :                                       qpair->active_proc == nvme_ctrlr_get_current_process(qpair->ctrlr))) {
    1020           4 :                 if (qpair->id) {
    1021           3 :                         free(pqpair->stat);
    1022             :                 } else {
    1023             :                         /* statistics of admin qpair are allocates from huge pages because
    1024             :                          * admin qpair is shared for multi-process */
    1025           1 :                         spdk_free(pqpair->stat);
    1026             :                 }
    1027             : 
    1028             :         }
    1029             : 
    1030           4 :         spdk_free(pqpair);
    1031             : 
    1032           4 :         return 0;
    1033             : }
    1034             : 
    1035             : struct spdk_nvme_qpair *
    1036           0 : nvme_pcie_ctrlr_create_io_qpair(struct spdk_nvme_ctrlr *ctrlr, uint16_t qid,
    1037             :                                 const struct spdk_nvme_io_qpair_opts *opts)
    1038             : {
    1039             :         struct nvme_pcie_qpair *pqpair;
    1040             :         struct spdk_nvme_qpair *qpair;
    1041             :         int rc;
    1042             : 
    1043           0 :         assert(ctrlr != NULL);
    1044             : 
    1045           0 :         pqpair = spdk_zmalloc(sizeof(*pqpair), 64, NULL,
    1046             :                               SPDK_ENV_SOCKET_ID_ANY, SPDK_MALLOC_SHARE);
    1047           0 :         if (pqpair == NULL) {
    1048           0 :                 return NULL;
    1049             :         }
    1050             : 
    1051           0 :         pqpair->num_entries = opts->io_queue_size;
    1052           0 :         pqpair->flags.delay_cmd_submit = opts->delay_cmd_submit;
    1053             : 
    1054           0 :         qpair = &pqpair->qpair;
    1055             : 
    1056           0 :         rc = nvme_qpair_init(qpair, qid, ctrlr, opts->qprio, opts->io_queue_requests, opts->async_mode);
    1057           0 :         if (rc != 0) {
    1058           0 :                 nvme_pcie_qpair_destroy(qpair);
    1059           0 :                 return NULL;
    1060             :         }
    1061             : 
    1062           0 :         rc = nvme_pcie_qpair_construct(qpair, opts);
    1063             : 
    1064           0 :         if (rc != 0) {
    1065           0 :                 nvme_pcie_qpair_destroy(qpair);
    1066           0 :                 return NULL;
    1067             :         }
    1068             : 
    1069           0 :         return qpair;
    1070             : }
    1071             : 
    1072             : int
    1073           0 : nvme_pcie_ctrlr_delete_io_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair)
    1074             : {
    1075           0 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
    1076             :         struct nvme_completion_poll_status *status;
    1077             :         int rc;
    1078             : 
    1079           0 :         assert(ctrlr != NULL);
    1080             : 
    1081           0 :         if (ctrlr->is_removed) {
    1082           0 :                 goto free;
    1083             :         }
    1084             : 
    1085           0 :         if (ctrlr->prepare_for_reset) {
    1086           0 :                 if (nvme_qpair_get_state(qpair) == NVME_QPAIR_CONNECTING) {
    1087           0 :                         pqpair->flags.defer_destruction = true;
    1088             :                 }
    1089           0 :                 goto clear_shadow_doorbells;
    1090             :         }
    1091             : 
    1092             :         /* If attempting to delete a qpair that's still being connected, we have to wait until it's
    1093             :          * finished, so that we don't free it while it's waiting for the create cq/sq callbacks.
    1094             :          */
    1095           0 :         while (pqpair->pcie_state == NVME_PCIE_QPAIR_WAIT_FOR_CQ ||
    1096           0 :                pqpair->pcie_state == NVME_PCIE_QPAIR_WAIT_FOR_SQ) {
    1097           0 :                 rc = spdk_nvme_qpair_process_completions(ctrlr->adminq, 0);
    1098           0 :                 if (rc < 0) {
    1099           0 :                         break;
    1100             :                 }
    1101             :         }
    1102             : 
    1103           0 :         status = calloc(1, sizeof(*status));
    1104           0 :         if (!status) {
    1105           0 :                 SPDK_ERRLOG("Failed to allocate status tracker\n");
    1106           0 :                 goto free;
    1107             :         }
    1108             : 
    1109             :         /* Delete the I/O submission queue */
    1110           0 :         rc = nvme_pcie_ctrlr_cmd_delete_io_sq(ctrlr, qpair, nvme_completion_poll_cb, status);
    1111           0 :         if (rc != 0) {
    1112           0 :                 SPDK_ERRLOG("Failed to send request to delete_io_sq with rc=%d\n", rc);
    1113           0 :                 free(status);
    1114           0 :                 goto free;
    1115             :         }
    1116           0 :         if (nvme_wait_for_completion(ctrlr->adminq, status)) {
    1117           0 :                 if (!status->timed_out) {
    1118           0 :                         free(status);
    1119             :                 }
    1120           0 :                 goto free;
    1121             :         }
    1122             : 
    1123             :         /* Now that the submission queue is deleted, the device is supposed to have
    1124             :          * completed any outstanding I/O. Try to complete them. If they don't complete,
    1125             :          * they'll be marked as aborted and completed below. */
    1126           0 :         if (qpair->active_proc == nvme_ctrlr_get_current_process(ctrlr)) {
    1127           0 :                 nvme_pcie_qpair_process_completions(qpair, 0);
    1128             :         }
    1129             : 
    1130           0 :         memset(status, 0, sizeof(*status));
    1131             :         /* Delete the completion queue */
    1132           0 :         rc = nvme_pcie_ctrlr_cmd_delete_io_cq(ctrlr, qpair, nvme_completion_poll_cb, status);
    1133           0 :         if (rc != 0) {
    1134           0 :                 SPDK_ERRLOG("Failed to send request to delete_io_cq with rc=%d\n", rc);
    1135           0 :                 free(status);
    1136           0 :                 goto free;
    1137             :         }
    1138           0 :         if (nvme_wait_for_completion(ctrlr->adminq, status)) {
    1139           0 :                 if (!status->timed_out) {
    1140           0 :                         free(status);
    1141             :                 }
    1142           0 :                 goto free;
    1143             :         }
    1144           0 :         free(status);
    1145             : 
    1146           0 : clear_shadow_doorbells:
    1147           0 :         if (pqpair->flags.has_shadow_doorbell && ctrlr->shadow_doorbell) {
    1148           0 :                 *pqpair->shadow_doorbell.sq_tdbl = 0;
    1149           0 :                 *pqpair->shadow_doorbell.cq_hdbl = 0;
    1150           0 :                 *pqpair->shadow_doorbell.sq_eventidx = 0;
    1151           0 :                 *pqpair->shadow_doorbell.cq_eventidx = 0;
    1152             :         }
    1153           0 : free:
    1154           0 :         if (qpair->no_deletion_notification_needed == 0) {
    1155             :                 /* Abort the rest of the I/O */
    1156           0 :                 nvme_pcie_qpair_abort_trackers(qpair, 1);
    1157             :         }
    1158             : 
    1159           0 :         if (!pqpair->flags.defer_destruction) {
    1160           0 :                 nvme_pcie_qpair_destroy(qpair);
    1161             :         }
    1162           0 :         return 0;
    1163             : }
    1164             : 
    1165             : static void
    1166           3 : nvme_pcie_fail_request_bad_vtophys(struct spdk_nvme_qpair *qpair, struct nvme_tracker *tr)
    1167             : {
    1168           3 :         if (!qpair->in_completion_context) {
    1169           3 :                 struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
    1170             : 
    1171           3 :                 tr->bad_vtophys = 1;
    1172           3 :                 pqpair->flags.has_pending_vtophys_failures = 1;
    1173           3 :                 return;
    1174             :         }
    1175             : 
    1176             :         /*
    1177             :          * Bad vtophys translation, so abort this request and return
    1178             :          *  immediately.
    1179             :          */
    1180           0 :         SPDK_ERRLOG("vtophys or other payload buffer related error\n");
    1181           0 :         nvme_pcie_qpair_manual_complete_tracker(qpair, tr, SPDK_NVME_SCT_GENERIC,
    1182             :                                                 SPDK_NVME_SC_INVALID_FIELD,
    1183             :                                                 1 /* do not retry */, true);
    1184             : }
    1185             : 
    1186             : /*
    1187             :  * Append PRP list entries to describe a virtually contiguous buffer starting at virt_addr of len bytes.
    1188             :  *
    1189             :  * *prp_index will be updated to account for the number of PRP entries used.
    1190             :  */
    1191             : static inline int
    1192          25 : nvme_pcie_prp_list_append(struct spdk_nvme_ctrlr *ctrlr, struct nvme_tracker *tr,
    1193             :                           uint32_t *prp_index, void *virt_addr, size_t len,
    1194             :                           uint32_t page_size)
    1195             : {
    1196          25 :         struct spdk_nvme_cmd *cmd = &tr->req->cmd;
    1197          25 :         uintptr_t page_mask = page_size - 1;
    1198             :         uint64_t phys_addr;
    1199             :         uint32_t i;
    1200             : 
    1201          25 :         SPDK_DEBUGLOG(nvme, "prp_index:%u virt_addr:%p len:%u\n",
    1202             :                       *prp_index, virt_addr, (uint32_t)len);
    1203             : 
    1204          25 :         if (spdk_unlikely(((uintptr_t)virt_addr & 3) != 0)) {
    1205           2 :                 SPDK_ERRLOG("virt_addr %p not dword aligned\n", virt_addr);
    1206           2 :                 return -EFAULT;
    1207             :         }
    1208             : 
    1209          23 :         i = *prp_index;
    1210        2070 :         while (len) {
    1211             :                 uint32_t seg_len;
    1212             : 
    1213             :                 /*
    1214             :                  * prp_index 0 is stored in prp1, and the rest are stored in the prp[] array,
    1215             :                  * so prp_index == count is valid.
    1216             :                  */
    1217        2051 :                 if (spdk_unlikely(i > SPDK_COUNTOF(tr->u.prp))) {
    1218           2 :                         SPDK_ERRLOG("out of PRP entries\n");
    1219           2 :                         return -EFAULT;
    1220             :                 }
    1221             : 
    1222        2049 :                 phys_addr = nvme_pcie_vtophys(ctrlr, virt_addr, NULL);
    1223        2049 :                 if (spdk_unlikely(phys_addr == SPDK_VTOPHYS_ERROR)) {
    1224           1 :                         SPDK_ERRLOG("vtophys(%p) failed\n", virt_addr);
    1225           1 :                         return -EFAULT;
    1226             :                 }
    1227             : 
    1228        2048 :                 if (i == 0) {
    1229          19 :                         SPDK_DEBUGLOG(nvme, "prp1 = %p\n", (void *)phys_addr);
    1230          19 :                         cmd->dptr.prp.prp1 = phys_addr;
    1231          19 :                         seg_len = page_size - ((uintptr_t)virt_addr & page_mask);
    1232             :                 } else {
    1233        2029 :                         if ((phys_addr & page_mask) != 0) {
    1234           1 :                                 SPDK_ERRLOG("PRP %u not page aligned (%p)\n", i, virt_addr);
    1235           1 :                                 return -EFAULT;
    1236             :                         }
    1237             : 
    1238        2028 :                         SPDK_DEBUGLOG(nvme, "prp[%u] = %p\n", i - 1, (void *)phys_addr);
    1239        2028 :                         tr->u.prp[i - 1] = phys_addr;
    1240        2028 :                         seg_len = page_size;
    1241             :                 }
    1242             : 
    1243        2047 :                 seg_len = spdk_min(seg_len, len);
    1244        2047 :                 virt_addr = (uint8_t *)virt_addr + seg_len;
    1245        2047 :                 len -= seg_len;
    1246        2047 :                 i++;
    1247             :         }
    1248             : 
    1249          19 :         cmd->psdt = SPDK_NVME_PSDT_PRP;
    1250          19 :         if (i <= 1) {
    1251           6 :                 cmd->dptr.prp.prp2 = 0;
    1252          13 :         } else if (i == 2) {
    1253           6 :                 cmd->dptr.prp.prp2 = tr->u.prp[0];
    1254           6 :                 SPDK_DEBUGLOG(nvme, "prp2 = %p\n", (void *)cmd->dptr.prp.prp2);
    1255             :         } else {
    1256           7 :                 cmd->dptr.prp.prp2 = tr->prp_sgl_bus_addr;
    1257           7 :                 SPDK_DEBUGLOG(nvme, "prp2 = %p (PRP list)\n", (void *)cmd->dptr.prp.prp2);
    1258             :         }
    1259             : 
    1260          19 :         *prp_index = i;
    1261          19 :         return 0;
    1262             : }
    1263             : 
    1264             : static int
    1265           0 : nvme_pcie_qpair_build_request_invalid(struct spdk_nvme_qpair *qpair,
    1266             :                                       struct nvme_request *req, struct nvme_tracker *tr, bool dword_aligned)
    1267             : {
    1268           0 :         assert(0);
    1269             :         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1270             :         return -EINVAL;
    1271             : }
    1272             : 
    1273             : /**
    1274             :  * Build PRP list describing physically contiguous payload buffer.
    1275             :  */
    1276             : static int
    1277           4 : nvme_pcie_qpair_build_contig_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req,
    1278             :                                      struct nvme_tracker *tr, bool dword_aligned)
    1279             : {
    1280           4 :         uint32_t prp_index = 0;
    1281             :         int rc;
    1282             : 
    1283           4 :         rc = nvme_pcie_prp_list_append(qpair->ctrlr, tr, &prp_index,
    1284           4 :                                        (uint8_t *)req->payload.contig_or_cb_arg + req->payload_offset,
    1285           4 :                                        req->payload_size, qpair->ctrlr->page_size);
    1286           4 :         if (rc) {
    1287           1 :                 nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1288             :         }
    1289             : 
    1290           4 :         return rc;
    1291             : }
    1292             : 
    1293             : /**
    1294             :  * Build an SGL describing a physically contiguous payload buffer.
    1295             :  *
    1296             :  * This is more efficient than using PRP because large buffers can be
    1297             :  * described this way.
    1298             :  */
    1299             : static int
    1300           3 : nvme_pcie_qpair_build_contig_hw_sgl_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req,
    1301             :                 struct nvme_tracker *tr, bool dword_aligned)
    1302             : {
    1303             :         uint8_t *virt_addr;
    1304           3 :         uint64_t phys_addr, mapping_length;
    1305             :         uint32_t length;
    1306             :         struct spdk_nvme_sgl_descriptor *sgl;
    1307           3 :         uint32_t nseg = 0;
    1308             : 
    1309           3 :         assert(req->payload_size != 0);
    1310           3 :         assert(nvme_payload_type(&req->payload) == NVME_PAYLOAD_TYPE_CONTIG);
    1311             : 
    1312           3 :         sgl = tr->u.sgl;
    1313           3 :         req->cmd.psdt = SPDK_NVME_PSDT_SGL_MPTR_CONTIG;
    1314           3 :         req->cmd.dptr.sgl1.unkeyed.subtype = 0;
    1315             : 
    1316           3 :         length = req->payload_size;
    1317             :         /* ubsan complains about applying zero offset to null pointer if contig_or_cb_arg is NULL,
    1318             :          * so just double cast it to make it go away */
    1319           3 :         virt_addr = (uint8_t *)((uintptr_t)req->payload.contig_or_cb_arg + req->payload_offset);
    1320             : 
    1321           7 :         while (length > 0) {
    1322           4 :                 if (nseg >= NVME_MAX_SGL_DESCRIPTORS) {
    1323           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1324           0 :                         return -EFAULT;
    1325             :                 }
    1326             : 
    1327           4 :                 if (dword_aligned && ((uintptr_t)virt_addr & 3)) {
    1328           0 :                         SPDK_ERRLOG("virt_addr %p not dword aligned\n", virt_addr);
    1329           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1330           0 :                         return -EFAULT;
    1331             :                 }
    1332             : 
    1333           4 :                 mapping_length = length;
    1334           4 :                 phys_addr = nvme_pcie_vtophys(qpair->ctrlr, virt_addr, &mapping_length);
    1335           4 :                 if (phys_addr == SPDK_VTOPHYS_ERROR) {
    1336           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1337           0 :                         return -EFAULT;
    1338             :                 }
    1339             : 
    1340           4 :                 mapping_length = spdk_min(length, mapping_length);
    1341             : 
    1342           4 :                 length -= mapping_length;
    1343           4 :                 virt_addr += mapping_length;
    1344             : 
    1345           4 :                 sgl->unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1346           4 :                 sgl->unkeyed.length = mapping_length;
    1347           4 :                 sgl->address = phys_addr;
    1348           4 :                 sgl->unkeyed.subtype = 0;
    1349             : 
    1350           4 :                 sgl++;
    1351           4 :                 nseg++;
    1352             :         }
    1353             : 
    1354           3 :         if (nseg == 1) {
    1355             :                 /*
    1356             :                  * The whole transfer can be described by a single SGL descriptor.
    1357             :                  *  Use the special case described by the spec where SGL1's type is Data Block.
    1358             :                  *  This means the SGL in the tracker is not used at all, so copy the first (and only)
    1359             :                  *  SGL element into SGL1.
    1360             :                  */
    1361           2 :                 req->cmd.dptr.sgl1.unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1362           2 :                 req->cmd.dptr.sgl1.address = tr->u.sgl[0].address;
    1363           2 :                 req->cmd.dptr.sgl1.unkeyed.length = tr->u.sgl[0].unkeyed.length;
    1364             :         } else {
    1365             :                 /* SPDK NVMe driver supports only 1 SGL segment for now, it is enough because
    1366             :                  *  NVME_MAX_SGL_DESCRIPTORS * 16 is less than one page.
    1367             :                  */
    1368           1 :                 req->cmd.dptr.sgl1.unkeyed.type = SPDK_NVME_SGL_TYPE_LAST_SEGMENT;
    1369           1 :                 req->cmd.dptr.sgl1.address = tr->prp_sgl_bus_addr;
    1370           1 :                 req->cmd.dptr.sgl1.unkeyed.length = nseg * sizeof(struct spdk_nvme_sgl_descriptor);
    1371             :         }
    1372             : 
    1373           3 :         return 0;
    1374             : }
    1375             : 
    1376             : /**
    1377             :  * Build SGL list describing scattered payload buffer.
    1378             :  */
    1379             : static int
    1380           2 : nvme_pcie_qpair_build_hw_sgl_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req,
    1381             :                                      struct nvme_tracker *tr, bool dword_aligned)
    1382             : {
    1383             :         int rc;
    1384           2 :         void *virt_addr;
    1385           2 :         uint64_t phys_addr, mapping_length;
    1386           2 :         uint32_t remaining_transfer_len, remaining_user_sge_len, length;
    1387             :         struct spdk_nvme_sgl_descriptor *sgl;
    1388           2 :         uint32_t nseg = 0;
    1389             : 
    1390             :         /*
    1391             :          * Build scattered payloads.
    1392             :          */
    1393           2 :         assert(req->payload_size != 0);
    1394           2 :         assert(nvme_payload_type(&req->payload) == NVME_PAYLOAD_TYPE_SGL);
    1395           2 :         assert(req->payload.reset_sgl_fn != NULL);
    1396           2 :         assert(req->payload.next_sge_fn != NULL);
    1397           2 :         req->payload.reset_sgl_fn(req->payload.contig_or_cb_arg, req->payload_offset);
    1398             : 
    1399           2 :         sgl = tr->u.sgl;
    1400           2 :         req->cmd.psdt = SPDK_NVME_PSDT_SGL_MPTR_CONTIG;
    1401           2 :         req->cmd.dptr.sgl1.unkeyed.subtype = 0;
    1402             : 
    1403           2 :         remaining_transfer_len = req->payload_size;
    1404             : 
    1405           6 :         while (remaining_transfer_len > 0) {
    1406           4 :                 rc = req->payload.next_sge_fn(req->payload.contig_or_cb_arg,
    1407             :                                               &virt_addr, &remaining_user_sge_len);
    1408           4 :                 if (rc) {
    1409           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1410           0 :                         return -EFAULT;
    1411             :                 }
    1412             : 
    1413             :                 /* Bit Bucket SGL descriptor */
    1414           4 :                 if ((uint64_t)virt_addr == UINT64_MAX) {
    1415             :                         /* TODO: enable WRITE and COMPARE when necessary */
    1416           0 :                         if (req->cmd.opc != SPDK_NVME_OPC_READ) {
    1417           0 :                                 SPDK_ERRLOG("Only READ command can be supported\n");
    1418           0 :                                 goto exit;
    1419             :                         }
    1420           0 :                         if (nseg >= NVME_MAX_SGL_DESCRIPTORS) {
    1421           0 :                                 SPDK_ERRLOG("Too many SGL entries\n");
    1422           0 :                                 goto exit;
    1423             :                         }
    1424             : 
    1425           0 :                         sgl->unkeyed.type = SPDK_NVME_SGL_TYPE_BIT_BUCKET;
    1426             :                         /* If the SGL describes a destination data buffer, the length of data
    1427             :                          * buffer shall be discarded by controller, and the length is included
    1428             :                          * in Number of Logical Blocks (NLB) parameter. Otherwise, the length
    1429             :                          * is not included in the NLB parameter.
    1430             :                          */
    1431           0 :                         remaining_user_sge_len = spdk_min(remaining_user_sge_len, remaining_transfer_len);
    1432           0 :                         remaining_transfer_len -= remaining_user_sge_len;
    1433             : 
    1434           0 :                         sgl->unkeyed.length = remaining_user_sge_len;
    1435           0 :                         sgl->address = 0;
    1436           0 :                         sgl->unkeyed.subtype = 0;
    1437             : 
    1438           0 :                         sgl++;
    1439           0 :                         nseg++;
    1440             : 
    1441           0 :                         continue;
    1442             :                 }
    1443             : 
    1444           4 :                 remaining_user_sge_len = spdk_min(remaining_user_sge_len, remaining_transfer_len);
    1445           4 :                 remaining_transfer_len -= remaining_user_sge_len;
    1446           8 :                 while (remaining_user_sge_len > 0) {
    1447           4 :                         if (nseg >= NVME_MAX_SGL_DESCRIPTORS) {
    1448           0 :                                 SPDK_ERRLOG("Too many SGL entries\n");
    1449           0 :                                 goto exit;
    1450             :                         }
    1451             : 
    1452           4 :                         if (dword_aligned && ((uintptr_t)virt_addr & 3)) {
    1453           0 :                                 SPDK_ERRLOG("virt_addr %p not dword aligned\n", virt_addr);
    1454           0 :                                 goto exit;
    1455             :                         }
    1456             : 
    1457           4 :                         mapping_length = remaining_user_sge_len;
    1458           4 :                         phys_addr = nvme_pcie_vtophys(qpair->ctrlr, virt_addr, &mapping_length);
    1459           4 :                         if (phys_addr == SPDK_VTOPHYS_ERROR) {
    1460           0 :                                 goto exit;
    1461             :                         }
    1462             : 
    1463           4 :                         length = spdk_min(remaining_user_sge_len, mapping_length);
    1464           4 :                         remaining_user_sge_len -= length;
    1465           4 :                         virt_addr = (uint8_t *)virt_addr + length;
    1466             : 
    1467           4 :                         if (nseg > 0 && phys_addr ==
    1468           2 :                             (*(sgl - 1)).address + (*(sgl - 1)).unkeyed.length) {
    1469             :                                 /* extend previous entry */
    1470           0 :                                 (*(sgl - 1)).unkeyed.length += length;
    1471           0 :                                 continue;
    1472             :                         }
    1473             : 
    1474           4 :                         sgl->unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1475           4 :                         sgl->unkeyed.length = length;
    1476           4 :                         sgl->address = phys_addr;
    1477           4 :                         sgl->unkeyed.subtype = 0;
    1478             : 
    1479           4 :                         sgl++;
    1480           4 :                         nseg++;
    1481             :                 }
    1482             :         }
    1483             : 
    1484           2 :         if (nseg == 1) {
    1485             :                 /*
    1486             :                  * The whole transfer can be described by a single SGL descriptor.
    1487             :                  *  Use the special case described by the spec where SGL1's type is Data Block.
    1488             :                  *  This means the SGL in the tracker is not used at all, so copy the first (and only)
    1489             :                  *  SGL element into SGL1.
    1490             :                  */
    1491           1 :                 req->cmd.dptr.sgl1.unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1492           1 :                 req->cmd.dptr.sgl1.address = tr->u.sgl[0].address;
    1493           1 :                 req->cmd.dptr.sgl1.unkeyed.length = tr->u.sgl[0].unkeyed.length;
    1494             :         } else {
    1495             :                 /* SPDK NVMe driver supports only 1 SGL segment for now, it is enough because
    1496             :                  *  NVME_MAX_SGL_DESCRIPTORS * 16 is less than one page.
    1497             :                  */
    1498           1 :                 req->cmd.dptr.sgl1.unkeyed.type = SPDK_NVME_SGL_TYPE_LAST_SEGMENT;
    1499           1 :                 req->cmd.dptr.sgl1.address = tr->prp_sgl_bus_addr;
    1500           1 :                 req->cmd.dptr.sgl1.unkeyed.length = nseg * sizeof(struct spdk_nvme_sgl_descriptor);
    1501             :         }
    1502             : 
    1503           2 :         return 0;
    1504             : 
    1505           0 : exit:
    1506           0 :         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1507           0 :         return -EFAULT;
    1508             : }
    1509             : 
    1510             : /**
    1511             :  * Build PRP list describing scattered payload buffer.
    1512             :  */
    1513             : static int
    1514           1 : nvme_pcie_qpair_build_prps_sgl_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req,
    1515             :                                        struct nvme_tracker *tr, bool dword_aligned)
    1516             : {
    1517             :         int rc;
    1518           1 :         void *virt_addr;
    1519           1 :         uint32_t remaining_transfer_len, length;
    1520           1 :         uint32_t prp_index = 0;
    1521           1 :         uint32_t page_size = qpair->ctrlr->page_size;
    1522             : 
    1523             :         /*
    1524             :          * Build scattered payloads.
    1525             :          */
    1526           1 :         assert(nvme_payload_type(&req->payload) == NVME_PAYLOAD_TYPE_SGL);
    1527           1 :         assert(req->payload.reset_sgl_fn != NULL);
    1528           1 :         req->payload.reset_sgl_fn(req->payload.contig_or_cb_arg, req->payload_offset);
    1529             : 
    1530           1 :         remaining_transfer_len = req->payload_size;
    1531           2 :         while (remaining_transfer_len > 0) {
    1532           1 :                 assert(req->payload.next_sge_fn != NULL);
    1533           1 :                 rc = req->payload.next_sge_fn(req->payload.contig_or_cb_arg, &virt_addr, &length);
    1534           1 :                 if (rc) {
    1535           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1536           0 :                         return -EFAULT;
    1537             :                 }
    1538             : 
    1539           1 :                 length = spdk_min(remaining_transfer_len, length);
    1540             : 
    1541             :                 /*
    1542             :                  * Any incompatible sges should have been handled up in the splitting routine,
    1543             :                  *  but assert here as an additional check.
    1544             :                  *
    1545             :                  * All SGEs except last must end on a page boundary.
    1546             :                  */
    1547           1 :                 assert((length == remaining_transfer_len) ||
    1548             :                        _is_page_aligned((uintptr_t)virt_addr + length, page_size));
    1549             : 
    1550           1 :                 rc = nvme_pcie_prp_list_append(qpair->ctrlr, tr, &prp_index, virt_addr, length, page_size);
    1551           1 :                 if (rc) {
    1552           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1553           0 :                         return rc;
    1554             :                 }
    1555             : 
    1556           1 :                 remaining_transfer_len -= length;
    1557             :         }
    1558             : 
    1559           1 :         return 0;
    1560             : }
    1561             : 
    1562             : typedef int(*build_req_fn)(struct spdk_nvme_qpair *, struct nvme_request *, struct nvme_tracker *,
    1563             :                            bool);
    1564             : 
    1565             : static build_req_fn const g_nvme_pcie_build_req_table[][2] = {
    1566             :         [NVME_PAYLOAD_TYPE_INVALID] = {
    1567             :                 nvme_pcie_qpair_build_request_invalid,                  /* PRP */
    1568             :                 nvme_pcie_qpair_build_request_invalid                   /* SGL */
    1569             :         },
    1570             :         [NVME_PAYLOAD_TYPE_CONTIG] = {
    1571             :                 nvme_pcie_qpair_build_contig_request,                   /* PRP */
    1572             :                 nvme_pcie_qpair_build_contig_hw_sgl_request             /* SGL */
    1573             :         },
    1574             :         [NVME_PAYLOAD_TYPE_SGL] = {
    1575             :                 nvme_pcie_qpair_build_prps_sgl_request,                 /* PRP */
    1576             :                 nvme_pcie_qpair_build_hw_sgl_request                    /* SGL */
    1577             :         }
    1578             : };
    1579             : 
    1580             : static int
    1581           5 : nvme_pcie_qpair_build_metadata(struct spdk_nvme_qpair *qpair, struct nvme_tracker *tr,
    1582             :                                bool sgl_supported, bool mptr_sgl_supported, bool dword_aligned)
    1583             : {
    1584             :         void *md_payload;
    1585           5 :         struct nvme_request *req = tr->req;
    1586           5 :         uint64_t mapping_length;
    1587             : 
    1588           5 :         if (req->payload.md) {
    1589           5 :                 md_payload = (uint8_t *)req->payload.md + req->md_offset;
    1590           5 :                 if (dword_aligned && ((uintptr_t)md_payload & 3)) {
    1591           0 :                         SPDK_ERRLOG("virt_addr %p not dword aligned\n", md_payload);
    1592           0 :                         goto exit;
    1593             :                 }
    1594             : 
    1595           5 :                 mapping_length = req->md_size;
    1596           5 :                 if (sgl_supported && mptr_sgl_supported && dword_aligned) {
    1597           2 :                         assert(req->cmd.psdt == SPDK_NVME_PSDT_SGL_MPTR_CONTIG);
    1598           2 :                         req->cmd.psdt = SPDK_NVME_PSDT_SGL_MPTR_SGL;
    1599             : 
    1600           2 :                         tr->meta_sgl.address = nvme_pcie_vtophys(qpair->ctrlr, md_payload, &mapping_length);
    1601           2 :                         if (tr->meta_sgl.address == SPDK_VTOPHYS_ERROR || mapping_length != req->md_size) {
    1602           1 :                                 goto exit;
    1603             :                         }
    1604           1 :                         tr->meta_sgl.unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1605           1 :                         tr->meta_sgl.unkeyed.length = req->md_size;
    1606           1 :                         tr->meta_sgl.unkeyed.subtype = 0;
    1607           1 :                         req->cmd.mptr = tr->prp_sgl_bus_addr - sizeof(struct spdk_nvme_sgl_descriptor);
    1608             :                 } else {
    1609           3 :                         req->cmd.mptr = nvme_pcie_vtophys(qpair->ctrlr, md_payload, &mapping_length);
    1610           3 :                         if (req->cmd.mptr == SPDK_VTOPHYS_ERROR || mapping_length != req->md_size) {
    1611           1 :                                 goto exit;
    1612             :                         }
    1613             :                 }
    1614             :         }
    1615             : 
    1616           3 :         return 0;
    1617             : 
    1618           2 : exit:
    1619           2 :         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1620           2 :         return -EINVAL;
    1621             : }
    1622             : 
    1623             : int
    1624           0 : nvme_pcie_qpair_submit_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req)
    1625             : {
    1626             :         struct nvme_tracker     *tr;
    1627           0 :         int                     rc = 0;
    1628           0 :         struct spdk_nvme_ctrlr  *ctrlr = qpair->ctrlr;
    1629           0 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
    1630             :         enum nvme_payload_type  payload_type;
    1631             :         bool                    sgl_supported;
    1632             :         bool                    mptr_sgl_supported;
    1633           0 :         bool                    dword_aligned = true;
    1634             : 
    1635           0 :         if (spdk_unlikely(nvme_qpair_is_admin_queue(qpair))) {
    1636           0 :                 nvme_ctrlr_lock(ctrlr);
    1637             :         }
    1638             : 
    1639           0 :         tr = TAILQ_FIRST(&pqpair->free_tr);
    1640             : 
    1641           0 :         if (tr == NULL) {
    1642           0 :                 pqpair->stat->queued_requests++;
    1643             :                 /* Inform the upper layer to try again later. */
    1644           0 :                 rc = -EAGAIN;
    1645           0 :                 goto exit;
    1646             :         }
    1647             : 
    1648           0 :         pqpair->stat->submitted_requests++;
    1649           0 :         TAILQ_REMOVE(&pqpair->free_tr, tr, tq_list); /* remove tr from free_tr */
    1650           0 :         TAILQ_INSERT_TAIL(&pqpair->outstanding_tr, tr, tq_list);
    1651           0 :         pqpair->qpair.queue_depth++;
    1652           0 :         tr->req = req;
    1653           0 :         tr->cb_fn = req->cb_fn;
    1654           0 :         tr->cb_arg = req->cb_arg;
    1655           0 :         req->cmd.cid = tr->cid;
    1656             :         /* Use PRP by default. This bit will be overridden below if needed. */
    1657           0 :         req->cmd.psdt = SPDK_NVME_PSDT_PRP;
    1658             : 
    1659           0 :         if (req->payload_size != 0) {
    1660           0 :                 payload_type = nvme_payload_type(&req->payload);
    1661             :                 /* According to the specification, PRPs shall be used for all
    1662             :                  *  Admin commands for NVMe over PCIe implementations.
    1663             :                  */
    1664           0 :                 sgl_supported = (ctrlr->flags & SPDK_NVME_CTRLR_SGL_SUPPORTED) != 0 &&
    1665           0 :                                 !nvme_qpair_is_admin_queue(qpair);
    1666           0 :                 mptr_sgl_supported = (ctrlr->flags & SPDK_NVME_CTRLR_MPTR_SGL_SUPPORTED) != 0 &&
    1667           0 :                                      !nvme_qpair_is_admin_queue(qpair);
    1668             : 
    1669           0 :                 if (sgl_supported) {
    1670             :                         /* Don't use SGL for DSM command */
    1671           0 :                         if (spdk_unlikely((ctrlr->quirks & NVME_QUIRK_NO_SGL_FOR_DSM) &&
    1672             :                                           (req->cmd.opc == SPDK_NVME_OPC_DATASET_MANAGEMENT))) {
    1673           0 :                                 sgl_supported = false;
    1674             :                         }
    1675             :                 }
    1676             : 
    1677           0 :                 if (sgl_supported && !(ctrlr->flags & SPDK_NVME_CTRLR_SGL_REQUIRES_DWORD_ALIGNMENT)) {
    1678           0 :                         dword_aligned = false;
    1679             :                 }
    1680             : 
    1681             :                 /* If we fail to build the request or the metadata, do not return the -EFAULT back up
    1682             :                  * the stack.  This ensures that we always fail these types of requests via a
    1683             :                  * completion callback, and never in the context of the submission.
    1684             :                  */
    1685           0 :                 rc = g_nvme_pcie_build_req_table[payload_type][sgl_supported](qpair, req, tr, dword_aligned);
    1686           0 :                 if (rc < 0) {
    1687           0 :                         assert(rc == -EFAULT);
    1688           0 :                         rc = 0;
    1689           0 :                         goto exit;
    1690             :                 }
    1691             : 
    1692           0 :                 rc = nvme_pcie_qpair_build_metadata(qpair, tr, sgl_supported, mptr_sgl_supported, dword_aligned);
    1693           0 :                 if (rc < 0) {
    1694           0 :                         assert(rc == -EFAULT);
    1695           0 :                         rc = 0;
    1696           0 :                         goto exit;
    1697             :                 }
    1698             :         }
    1699             : 
    1700           0 :         nvme_pcie_qpair_submit_tracker(qpair, tr);
    1701             : 
    1702           0 : exit:
    1703           0 :         if (spdk_unlikely(nvme_qpair_is_admin_queue(qpair))) {
    1704           0 :                 nvme_ctrlr_unlock(ctrlr);
    1705             :         }
    1706             : 
    1707           0 :         return rc;
    1708             : }
    1709             : 
    1710             : struct spdk_nvme_transport_poll_group *
    1711           1 : nvme_pcie_poll_group_create(void)
    1712             : {
    1713           1 :         struct nvme_pcie_poll_group *group = calloc(1, sizeof(*group));
    1714             : 
    1715           1 :         if (group == NULL) {
    1716           0 :                 SPDK_ERRLOG("Unable to allocate poll group.\n");
    1717           0 :                 return NULL;
    1718             :         }
    1719             : 
    1720           1 :         return &group->group;
    1721             : }
    1722             : 
    1723             : int
    1724           0 : nvme_pcie_poll_group_connect_qpair(struct spdk_nvme_qpair *qpair)
    1725             : {
    1726           0 :         return 0;
    1727             : }
    1728             : 
    1729             : int
    1730           0 : nvme_pcie_poll_group_disconnect_qpair(struct spdk_nvme_qpair *qpair)
    1731             : {
    1732           0 :         return 0;
    1733             : }
    1734             : 
    1735             : int
    1736           0 : nvme_pcie_poll_group_add(struct spdk_nvme_transport_poll_group *tgroup,
    1737             :                          struct spdk_nvme_qpair *qpair)
    1738             : {
    1739           0 :         return 0;
    1740             : }
    1741             : 
    1742             : int
    1743           0 : nvme_pcie_poll_group_remove(struct spdk_nvme_transport_poll_group *tgroup,
    1744             :                             struct spdk_nvme_qpair *qpair)
    1745             : {
    1746           0 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
    1747             : 
    1748           0 :         pqpair->stat = &g_dummy_stat;
    1749           0 :         return 0;
    1750             : }
    1751             : 
    1752             : int64_t
    1753           0 : nvme_pcie_poll_group_process_completions(struct spdk_nvme_transport_poll_group *tgroup,
    1754             :                 uint32_t completions_per_qpair, spdk_nvme_disconnected_qpair_cb disconnected_qpair_cb)
    1755             : {
    1756             :         struct spdk_nvme_qpair *qpair, *tmp_qpair;
    1757           0 :         int32_t local_completions = 0;
    1758           0 :         int64_t total_completions = 0;
    1759             : 
    1760           0 :         STAILQ_FOREACH_SAFE(qpair, &tgroup->disconnected_qpairs, poll_group_stailq, tmp_qpair) {
    1761           0 :                 disconnected_qpair_cb(qpair, tgroup->group->ctx);
    1762             :         }
    1763             : 
    1764           0 :         STAILQ_FOREACH_SAFE(qpair, &tgroup->connected_qpairs, poll_group_stailq, tmp_qpair) {
    1765           0 :                 local_completions = spdk_nvme_qpair_process_completions(qpair, completions_per_qpair);
    1766           0 :                 if (spdk_unlikely(local_completions < 0)) {
    1767           0 :                         disconnected_qpair_cb(qpair, tgroup->group->ctx);
    1768           0 :                         total_completions = -ENXIO;
    1769           0 :                 } else if (spdk_likely(total_completions >= 0)) {
    1770           0 :                         total_completions += local_completions;
    1771             :                 }
    1772             :         }
    1773             : 
    1774           0 :         return total_completions;
    1775             : }
    1776             : 
    1777             : int
    1778           1 : nvme_pcie_poll_group_destroy(struct spdk_nvme_transport_poll_group *tgroup)
    1779             : {
    1780           1 :         if (!STAILQ_EMPTY(&tgroup->connected_qpairs) || !STAILQ_EMPTY(&tgroup->disconnected_qpairs)) {
    1781           0 :                 return -EBUSY;
    1782             :         }
    1783             : 
    1784           1 :         free(tgroup);
    1785             : 
    1786           1 :         return 0;
    1787             : }
    1788             : 
    1789             : int
    1790           3 : nvme_pcie_poll_group_get_stats(struct spdk_nvme_transport_poll_group *tgroup,
    1791             :                                struct spdk_nvme_transport_poll_group_stat **_stats)
    1792             : {
    1793             :         struct nvme_pcie_poll_group *group;
    1794             :         struct spdk_nvme_transport_poll_group_stat *stats;
    1795             : 
    1796           3 :         if (tgroup == NULL || _stats == NULL) {
    1797           2 :                 SPDK_ERRLOG("Invalid stats or group pointer\n");
    1798           2 :                 return -EINVAL;
    1799             :         }
    1800             : 
    1801           1 :         stats = calloc(1, sizeof(*stats));
    1802           1 :         if (!stats) {
    1803           0 :                 SPDK_ERRLOG("Can't allocate memory for stats\n");
    1804           0 :                 return -ENOMEM;
    1805             :         }
    1806           1 :         stats->trtype = SPDK_NVME_TRANSPORT_PCIE;
    1807           1 :         group = SPDK_CONTAINEROF(tgroup, struct nvme_pcie_poll_group, group);
    1808           1 :         memcpy(&stats->pcie, &group->stats, sizeof(group->stats));
    1809             : 
    1810           1 :         *_stats = stats;
    1811             : 
    1812           1 :         return 0;
    1813             : }
    1814             : 
    1815             : void
    1816           1 : nvme_pcie_poll_group_free_stats(struct spdk_nvme_transport_poll_group *tgroup,
    1817             :                                 struct spdk_nvme_transport_poll_group_stat *stats)
    1818             : {
    1819           1 :         free(stats);
    1820           1 : }
    1821             : 
    1822           2 : SPDK_TRACE_REGISTER_FN(nvme_pcie, "nvme_pcie", TRACE_GROUP_NVME_PCIE)
    1823             : {
    1824           0 :         struct spdk_trace_tpoint_opts opts[] = {
    1825             :                 {
    1826             :                         "NVME_PCIE_SUBMIT", TRACE_NVME_PCIE_SUBMIT,
    1827             :                         OWNER_TYPE_NVME_PCIE_QP, OBJECT_NVME_PCIE_REQ, 1,
    1828             :                         {       { "ctx", SPDK_TRACE_ARG_TYPE_PTR, 8 },
    1829             :                                 { "cid", SPDK_TRACE_ARG_TYPE_INT, 4 },
    1830             :                                 { "opc", SPDK_TRACE_ARG_TYPE_INT, 4 },
    1831             :                                 { "dw10", SPDK_TRACE_ARG_TYPE_PTR, 4 },
    1832             :                                 { "dw11", SPDK_TRACE_ARG_TYPE_PTR, 4 },
    1833             :                                 { "dw12", SPDK_TRACE_ARG_TYPE_PTR, 4 },
    1834             :                                 { "qd", SPDK_TRACE_ARG_TYPE_INT, 4 }
    1835             :                         }
    1836             :                 },
    1837             :                 {
    1838             :                         "NVME_PCIE_COMPLETE", TRACE_NVME_PCIE_COMPLETE,
    1839             :                         OWNER_TYPE_NVME_PCIE_QP, OBJECT_NVME_PCIE_REQ, 0,
    1840             :                         {       { "ctx", SPDK_TRACE_ARG_TYPE_PTR, 8 },
    1841             :                                 { "cid", SPDK_TRACE_ARG_TYPE_INT, 4 },
    1842             :                                 { "cpl", SPDK_TRACE_ARG_TYPE_PTR, 4 },
    1843             :                                 { "qd", SPDK_TRACE_ARG_TYPE_INT, 4 }
    1844             :                         }
    1845             :                 },
    1846             :         };
    1847             : 
    1848           0 :         spdk_trace_register_object(OBJECT_NVME_PCIE_REQ, 'p');
    1849           0 :         spdk_trace_register_owner_type(OWNER_TYPE_NVME_PCIE_QP, 'q');
    1850           0 :         spdk_trace_register_description_ext(opts, SPDK_COUNTOF(opts));
    1851           0 : }

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