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: 433 866 50.0 %
Date: 2024-08-13 06:03:55 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 :                 pqpair->flags.disable_pcie_sgl_merge = opts->disable_pcie_sgl_merge;
     117           2 :                 sq_paddr = opts->sq.paddr;
     118           2 :                 cq_paddr = opts->cq.paddr;
     119             :         }
     120             : 
     121           4 :         pqpair->retry_count = ctrlr->opts.transport_retry_count;
     122             : 
     123             :         /*
     124             :          * Limit the maximum number of completions to return per call to prevent wraparound,
     125             :          * and calculate how many trackers can be submitted at once without overflowing the
     126             :          * completion queue.
     127             :          */
     128           4 :         pqpair->max_completions_cap = pqpair->num_entries / 4;
     129           4 :         pqpair->max_completions_cap = spdk_max(pqpair->max_completions_cap, NVME_MIN_COMPLETIONS);
     130           4 :         pqpair->max_completions_cap = spdk_min(pqpair->max_completions_cap, NVME_MAX_COMPLETIONS);
     131           4 :         num_trackers = pqpair->num_entries - pqpair->max_completions_cap;
     132             : 
     133           4 :         SPDK_INFOLOG(nvme, "max_completions_cap = %" PRIu16 " num_trackers = %" PRIu16 "\n",
     134             :                      pqpair->max_completions_cap, num_trackers);
     135             : 
     136           4 :         assert(num_trackers != 0);
     137             : 
     138           4 :         pqpair->sq_in_cmb = false;
     139             : 
     140           4 :         if (nvme_qpair_is_admin_queue(&pqpair->qpair)) {
     141           1 :                 flags |= SPDK_MALLOC_SHARE;
     142             :         }
     143             : 
     144             :         /* cmd and cpl rings must be aligned on page size boundaries. */
     145           4 :         if (ctrlr->opts.use_cmb_sqs) {
     146           1 :                 pqpair->cmd = nvme_pcie_ctrlr_alloc_cmb(ctrlr, pqpair->num_entries * sizeof(struct spdk_nvme_cmd),
     147             :                                                         page_align, &pqpair->cmd_bus_addr);
     148           1 :                 if (pqpair->cmd != NULL) {
     149           1 :                         pqpair->sq_in_cmb = true;
     150             :                 }
     151             :         }
     152             : 
     153           4 :         if (pqpair->sq_in_cmb == false) {
     154           3 :                 if (pqpair->sq_vaddr) {
     155           1 :                         pqpair->cmd = pqpair->sq_vaddr;
     156             :                 } else {
     157             :                         /* To ensure physical address contiguity we make each ring occupy
     158             :                          * a single hugepage only. See MAX_IO_QUEUE_ENTRIES.
     159             :                          */
     160           2 :                         queue_len = pqpair->num_entries * sizeof(struct spdk_nvme_cmd);
     161           2 :                         queue_align = spdk_max(spdk_align32pow2(queue_len), page_align);
     162           2 :                         pqpair->cmd = spdk_zmalloc(queue_len, queue_align, NULL, SPDK_ENV_SOCKET_ID_ANY, flags);
     163           2 :                         if (pqpair->cmd == NULL) {
     164           0 :                                 SPDK_ERRLOG("alloc qpair_cmd failed\n");
     165           0 :                                 return -ENOMEM;
     166             :                         }
     167             :                 }
     168           3 :                 if (sq_paddr) {
     169           1 :                         assert(pqpair->sq_vaddr != NULL);
     170           1 :                         pqpair->cmd_bus_addr = sq_paddr;
     171             :                 } else {
     172           2 :                         pqpair->cmd_bus_addr = nvme_pcie_vtophys(ctrlr, pqpair->cmd, NULL);
     173           2 :                         if (pqpair->cmd_bus_addr == SPDK_VTOPHYS_ERROR) {
     174           0 :                                 SPDK_ERRLOG("spdk_vtophys(pqpair->cmd) failed\n");
     175           0 :                                 return -EFAULT;
     176             :                         }
     177             :                 }
     178             :         }
     179             : 
     180           4 :         if (pqpair->cq_vaddr) {
     181           2 :                 pqpair->cpl = pqpair->cq_vaddr;
     182             :         } else {
     183           2 :                 queue_len = pqpair->num_entries * sizeof(struct spdk_nvme_cpl);
     184           2 :                 queue_align = spdk_max(spdk_align32pow2(queue_len), page_align);
     185           2 :                 pqpair->cpl = spdk_zmalloc(queue_len, queue_align, NULL, SPDK_ENV_SOCKET_ID_ANY, flags);
     186           2 :                 if (pqpair->cpl == NULL) {
     187           0 :                         SPDK_ERRLOG("alloc qpair_cpl failed\n");
     188           0 :                         return -ENOMEM;
     189             :                 }
     190             :         }
     191           4 :         if (cq_paddr) {
     192           2 :                 assert(pqpair->cq_vaddr != NULL);
     193           2 :                 pqpair->cpl_bus_addr = cq_paddr;
     194             :         } else {
     195           2 :                 pqpair->cpl_bus_addr =  nvme_pcie_vtophys(ctrlr, pqpair->cpl, NULL);
     196           2 :                 if (pqpair->cpl_bus_addr == SPDK_VTOPHYS_ERROR) {
     197           0 :                         SPDK_ERRLOG("spdk_vtophys(pqpair->cpl) failed\n");
     198           0 :                         return -EFAULT;
     199             :                 }
     200             :         }
     201             : 
     202           4 :         pqpair->sq_tdbl = pctrlr->doorbell_base + (2 * qpair->id + 0) * pctrlr->doorbell_stride_u32;
     203           4 :         pqpair->cq_hdbl = pctrlr->doorbell_base + (2 * qpair->id + 1) * pctrlr->doorbell_stride_u32;
     204             : 
     205             :         /*
     206             :          * Reserve space for all of the trackers in a single allocation.
     207             :          *   struct nvme_tracker must be padded so that its size is already a power of 2.
     208             :          *   This ensures the PRP list embedded in the nvme_tracker object will not span a
     209             :          *   4KB boundary, while allowing access to trackers in tr[] via normal array indexing.
     210             :          */
     211           4 :         pqpair->tr = spdk_zmalloc(num_trackers * sizeof(*tr), sizeof(*tr), NULL,
     212             :                                   SPDK_ENV_SOCKET_ID_ANY, SPDK_MALLOC_SHARE);
     213           4 :         if (pqpair->tr == NULL) {
     214           0 :                 SPDK_ERRLOG("nvme_tr failed\n");
     215           0 :                 return -ENOMEM;
     216             :         }
     217             : 
     218           4 :         TAILQ_INIT(&pqpair->free_tr);
     219           4 :         TAILQ_INIT(&pqpair->outstanding_tr);
     220           4 :         pqpair->qpair.queue_depth = 0;
     221             : 
     222          31 :         for (i = 0; i < num_trackers; i++) {
     223          27 :                 tr = &pqpair->tr[i];
     224          27 :                 nvme_qpair_construct_tracker(tr, i, nvme_pcie_vtophys(ctrlr, tr, NULL));
     225          27 :                 TAILQ_INSERT_HEAD(&pqpair->free_tr, tr, tq_list);
     226             :         }
     227             : 
     228           4 :         nvme_pcie_qpair_reset(qpair);
     229             : 
     230           4 :         return 0;
     231             : }
     232             : 
     233             : int
     234           1 : nvme_pcie_ctrlr_construct_admin_qpair(struct spdk_nvme_ctrlr *ctrlr, uint16_t num_entries)
     235             : {
     236             :         struct nvme_pcie_qpair *pqpair;
     237             :         int rc;
     238             : 
     239           1 :         pqpair = spdk_zmalloc(sizeof(*pqpair), 64, NULL, SPDK_ENV_SOCKET_ID_ANY, SPDK_MALLOC_SHARE);
     240           1 :         if (pqpair == NULL) {
     241           0 :                 return -ENOMEM;
     242             :         }
     243             : 
     244           1 :         pqpair->num_entries = num_entries;
     245           1 :         pqpair->flags.delay_cmd_submit = 0;
     246           1 :         pqpair->pcie_state = NVME_PCIE_QPAIR_READY;
     247             : 
     248           1 :         ctrlr->adminq = &pqpair->qpair;
     249             : 
     250           1 :         rc = nvme_qpair_init(ctrlr->adminq,
     251             :                              0, /* qpair ID */
     252             :                              ctrlr,
     253             :                              SPDK_NVME_QPRIO_URGENT,
     254             :                              num_entries,
     255             :                              false);
     256           1 :         if (rc != 0) {
     257           0 :                 return rc;
     258             :         }
     259             : 
     260           1 :         pqpair->stat = spdk_zmalloc(sizeof(*pqpair->stat), 64, NULL, SPDK_ENV_SOCKET_ID_ANY,
     261             :                                     SPDK_MALLOC_SHARE);
     262           1 :         if (!pqpair->stat) {
     263           0 :                 SPDK_ERRLOG("Failed to allocate admin qpair statistics\n");
     264           0 :                 return -ENOMEM;
     265             :         }
     266             : 
     267           1 :         return nvme_pcie_qpair_construct(ctrlr->adminq, NULL);
     268             : }
     269             : 
     270             : /**
     271             :  * Note: the ctrlr_lock must be held when calling this function.
     272             :  */
     273             : void
     274           0 : nvme_pcie_qpair_insert_pending_admin_request(struct spdk_nvme_qpair *qpair,
     275             :                 struct nvme_request *req, struct spdk_nvme_cpl *cpl)
     276             : {
     277           0 :         struct spdk_nvme_ctrlr          *ctrlr = qpair->ctrlr;
     278           0 :         struct nvme_request             *active_req = req;
     279             :         struct spdk_nvme_ctrlr_process  *active_proc;
     280             : 
     281             :         /*
     282             :          * The admin request is from another process. Move to the per
     283             :          *  process list for that process to handle it later.
     284             :          */
     285           0 :         assert(nvme_qpair_is_admin_queue(qpair));
     286           0 :         assert(active_req->pid != getpid());
     287             : 
     288           0 :         active_proc = nvme_ctrlr_get_process(ctrlr, active_req->pid);
     289           0 :         if (active_proc) {
     290             :                 /* Save the original completion information */
     291           0 :                 memcpy(&active_req->cpl, cpl, sizeof(*cpl));
     292           0 :                 STAILQ_INSERT_TAIL(&active_proc->active_reqs, active_req, stailq);
     293             :         } else {
     294           0 :                 SPDK_ERRLOG("The owning process (pid %d) is not found. Dropping the request.\n",
     295             :                             active_req->pid);
     296           0 :                 nvme_cleanup_user_req(active_req);
     297           0 :                 nvme_free_request(active_req);
     298             :         }
     299           0 : }
     300             : 
     301             : /**
     302             :  * Note: the ctrlr_lock must be held when calling this function.
     303             :  */
     304             : void
     305           0 : nvme_pcie_qpair_complete_pending_admin_request(struct spdk_nvme_qpair *qpair)
     306             : {
     307           0 :         struct spdk_nvme_ctrlr          *ctrlr = qpair->ctrlr;
     308             :         struct nvme_request             *req, *tmp_req;
     309           0 :         pid_t                           pid = getpid();
     310             :         struct spdk_nvme_ctrlr_process  *proc;
     311             : 
     312             :         /*
     313             :          * Check whether there is any pending admin request from
     314             :          * other active processes.
     315             :          */
     316           0 :         assert(nvme_qpair_is_admin_queue(qpair));
     317             : 
     318           0 :         proc = nvme_ctrlr_get_current_process(ctrlr);
     319           0 :         if (!proc) {
     320           0 :                 SPDK_ERRLOG("the active process (pid %d) is not found for this controller.\n", pid);
     321           0 :                 assert(proc);
     322           0 :                 return;
     323             :         }
     324             : 
     325           0 :         STAILQ_FOREACH_SAFE(req, &proc->active_reqs, stailq, tmp_req) {
     326           0 :                 STAILQ_REMOVE(&proc->active_reqs, req, nvme_request, stailq);
     327             : 
     328           0 :                 assert(req->pid == pid);
     329             : 
     330           0 :                 nvme_complete_request(req->cb_fn, req->cb_arg, qpair, req, &req->cpl);
     331             :         }
     332             : }
     333             : 
     334             : int
     335           7 : nvme_pcie_ctrlr_cmd_create_io_cq(struct spdk_nvme_ctrlr *ctrlr,
     336             :                                  struct spdk_nvme_qpair *io_que, spdk_nvme_cmd_cb cb_fn,
     337             :                                  void *cb_arg)
     338             : {
     339           7 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(io_que);
     340             :         struct nvme_request *req;
     341             :         struct spdk_nvme_cmd *cmd;
     342             : 
     343           7 :         req = nvme_allocate_request_null(ctrlr->adminq, cb_fn, cb_arg);
     344           7 :         if (req == NULL) {
     345           2 :                 return -ENOMEM;
     346             :         }
     347             : 
     348           5 :         cmd = &req->cmd;
     349           5 :         cmd->opc = SPDK_NVME_OPC_CREATE_IO_CQ;
     350             : 
     351           5 :         cmd->cdw10_bits.create_io_q.qid = io_que->id;
     352           5 :         cmd->cdw10_bits.create_io_q.qsize = pqpair->num_entries - 1;
     353             : 
     354           5 :         cmd->cdw11_bits.create_io_cq.pc = 1;
     355           5 :         cmd->dptr.prp.prp1 = pqpair->cpl_bus_addr;
     356             : 
     357           5 :         return nvme_ctrlr_submit_admin_request(ctrlr, req);
     358             : }
     359             : 
     360             : int
     361           5 : nvme_pcie_ctrlr_cmd_create_io_sq(struct spdk_nvme_ctrlr *ctrlr,
     362             :                                  struct spdk_nvme_qpair *io_que, spdk_nvme_cmd_cb cb_fn, void *cb_arg)
     363             : {
     364           5 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(io_que);
     365             :         struct nvme_request *req;
     366             :         struct spdk_nvme_cmd *cmd;
     367             : 
     368           5 :         req = nvme_allocate_request_null(ctrlr->adminq, cb_fn, cb_arg);
     369           5 :         if (req == NULL) {
     370           1 :                 return -ENOMEM;
     371             :         }
     372             : 
     373           4 :         cmd = &req->cmd;
     374           4 :         cmd->opc = SPDK_NVME_OPC_CREATE_IO_SQ;
     375             : 
     376           4 :         cmd->cdw10_bits.create_io_q.qid = io_que->id;
     377           4 :         cmd->cdw10_bits.create_io_q.qsize = pqpair->num_entries - 1;
     378           4 :         cmd->cdw11_bits.create_io_sq.pc = 1;
     379           4 :         cmd->cdw11_bits.create_io_sq.qprio = io_que->qprio;
     380           4 :         cmd->cdw11_bits.create_io_sq.cqid = io_que->id;
     381           4 :         cmd->dptr.prp.prp1 = pqpair->cmd_bus_addr;
     382             : 
     383           4 :         return nvme_ctrlr_submit_admin_request(ctrlr, req);
     384             : }
     385             : 
     386             : int
     387           3 : nvme_pcie_ctrlr_cmd_delete_io_cq(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair,
     388             :                                  spdk_nvme_cmd_cb cb_fn, void *cb_arg)
     389             : {
     390             :         struct nvme_request *req;
     391             :         struct spdk_nvme_cmd *cmd;
     392             : 
     393           3 :         req = nvme_allocate_request_null(ctrlr->adminq, cb_fn, cb_arg);
     394           3 :         if (req == NULL) {
     395           1 :                 return -ENOMEM;
     396             :         }
     397             : 
     398           2 :         cmd = &req->cmd;
     399           2 :         cmd->opc = SPDK_NVME_OPC_DELETE_IO_CQ;
     400           2 :         cmd->cdw10_bits.delete_io_q.qid = qpair->id;
     401             : 
     402           2 :         return nvme_ctrlr_submit_admin_request(ctrlr, req);
     403             : }
     404             : 
     405             : int
     406           2 : nvme_pcie_ctrlr_cmd_delete_io_sq(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair,
     407             :                                  spdk_nvme_cmd_cb cb_fn, void *cb_arg)
     408             : {
     409             :         struct nvme_request *req;
     410             :         struct spdk_nvme_cmd *cmd;
     411             : 
     412           2 :         req = nvme_allocate_request_null(ctrlr->adminq, cb_fn, cb_arg);
     413           2 :         if (req == NULL) {
     414           1 :                 return -ENOMEM;
     415             :         }
     416             : 
     417           1 :         cmd = &req->cmd;
     418           1 :         cmd->opc = SPDK_NVME_OPC_DELETE_IO_SQ;
     419           1 :         cmd->cdw10_bits.delete_io_q.qid = qpair->id;
     420             : 
     421           1 :         return nvme_ctrlr_submit_admin_request(ctrlr, req);
     422             : }
     423             : 
     424             : static void
     425           1 : nvme_completion_sq_error_delete_cq_cb(void *arg, const struct spdk_nvme_cpl *cpl)
     426             : {
     427           1 :         struct spdk_nvme_qpair *qpair = arg;
     428           1 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     429             : 
     430           1 :         if (spdk_nvme_cpl_is_error(cpl)) {
     431           0 :                 SPDK_ERRLOG("delete_io_cq failed!\n");
     432             :         }
     433             : 
     434           1 :         pqpair->pcie_state = NVME_PCIE_QPAIR_FAILED;
     435           1 : }
     436             : 
     437             : static void
     438           3 : nvme_completion_create_sq_cb(void *arg, const struct spdk_nvme_cpl *cpl)
     439             : {
     440           3 :         struct spdk_nvme_qpair *qpair = arg;
     441           3 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     442           3 :         struct spdk_nvme_ctrlr  *ctrlr = qpair->ctrlr;
     443           3 :         struct nvme_pcie_ctrlr  *pctrlr = nvme_pcie_ctrlr(ctrlr);
     444             :         int rc;
     445             : 
     446           3 :         if (pqpair->flags.defer_destruction) {
     447             :                 /* This qpair was deleted by the application while the
     448             :                  * connection was still in progress.  We had to wait
     449             :                  * to free the qpair resources until this outstanding
     450             :                  * command was completed.  Now that we have the completion
     451             :                  * free it now.
     452             :                  */
     453           0 :                 nvme_pcie_qpair_destroy(qpair);
     454           0 :                 return;
     455             :         }
     456             : 
     457           3 :         if (spdk_nvme_cpl_is_error(cpl)) {
     458           1 :                 SPDK_ERRLOG("nvme_create_io_sq failed, deleting cq!\n");
     459           1 :                 rc = nvme_pcie_ctrlr_cmd_delete_io_cq(qpair->ctrlr, qpair, nvme_completion_sq_error_delete_cq_cb,
     460             :                                                       qpair);
     461           1 :                 if (rc != 0) {
     462           0 :                         SPDK_ERRLOG("Failed to send request to delete_io_cq with rc=%d\n", rc);
     463           0 :                         pqpair->pcie_state = NVME_PCIE_QPAIR_FAILED;
     464             :                 }
     465           1 :                 return;
     466             :         }
     467           2 :         pqpair->pcie_state = NVME_PCIE_QPAIR_READY;
     468           2 :         if (ctrlr->shadow_doorbell) {
     469           1 :                 pqpair->shadow_doorbell.sq_tdbl = ctrlr->shadow_doorbell + (2 * qpair->id + 0) *
     470           1 :                                                   pctrlr->doorbell_stride_u32;
     471           1 :                 pqpair->shadow_doorbell.cq_hdbl = ctrlr->shadow_doorbell + (2 * qpair->id + 1) *
     472           1 :                                                   pctrlr->doorbell_stride_u32;
     473           1 :                 pqpair->shadow_doorbell.sq_eventidx = ctrlr->eventidx + (2 * qpair->id + 0) *
     474           1 :                                                       pctrlr->doorbell_stride_u32;
     475           1 :                 pqpair->shadow_doorbell.cq_eventidx = ctrlr->eventidx + (2 * qpair->id + 1) *
     476           1 :                                                       pctrlr->doorbell_stride_u32;
     477           1 :                 pqpair->flags.has_shadow_doorbell = 1;
     478             :         } else {
     479           1 :                 pqpair->flags.has_shadow_doorbell = 0;
     480             :         }
     481           2 :         nvme_pcie_qpair_reset(qpair);
     482             : 
     483             : }
     484             : 
     485             : static void
     486           4 : nvme_completion_create_cq_cb(void *arg, const struct spdk_nvme_cpl *cpl)
     487             : {
     488           4 :         struct spdk_nvme_qpair *qpair = arg;
     489           4 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     490             :         int rc;
     491             : 
     492           4 :         if (pqpair->flags.defer_destruction) {
     493             :                 /* This qpair was deleted by the application while the
     494             :                  * connection was still in progress.  We had to wait
     495             :                  * to free the qpair resources until this outstanding
     496             :                  * command was completed.  Now that we have the completion
     497             :                  * free it now.
     498             :                  */
     499           0 :                 nvme_pcie_qpair_destroy(qpair);
     500           0 :                 return;
     501             :         }
     502             : 
     503           4 :         if (spdk_nvme_cpl_is_error(cpl)) {
     504           1 :                 pqpair->pcie_state = NVME_PCIE_QPAIR_FAILED;
     505           1 :                 SPDK_ERRLOG("nvme_create_io_cq failed!\n");
     506           1 :                 return;
     507             :         }
     508             : 
     509           3 :         rc = nvme_pcie_ctrlr_cmd_create_io_sq(qpair->ctrlr, qpair, nvme_completion_create_sq_cb, qpair);
     510             : 
     511           3 :         if (rc != 0) {
     512           0 :                 SPDK_ERRLOG("Failed to send request to create_io_sq, deleting cq!\n");
     513           0 :                 rc = nvme_pcie_ctrlr_cmd_delete_io_cq(qpair->ctrlr, qpair, nvme_completion_sq_error_delete_cq_cb,
     514             :                                                       qpair);
     515           0 :                 if (rc != 0) {
     516           0 :                         SPDK_ERRLOG("Failed to send request to delete_io_cq with rc=%d\n", rc);
     517           0 :                         pqpair->pcie_state = NVME_PCIE_QPAIR_FAILED;
     518             :                 }
     519           0 :                 return;
     520             :         }
     521           3 :         pqpair->pcie_state = NVME_PCIE_QPAIR_WAIT_FOR_SQ;
     522             : }
     523             : 
     524             : static int
     525           5 : _nvme_pcie_ctrlr_create_io_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair,
     526             :                                  uint16_t qid)
     527             : {
     528           5 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     529             :         int     rc;
     530             : 
     531             :         /* Statistics may already be allocated in the case of controller reset */
     532           5 :         if (qpair->poll_group) {
     533           5 :                 struct nvme_pcie_poll_group *group = SPDK_CONTAINEROF(qpair->poll_group,
     534             :                                                      struct nvme_pcie_poll_group, group);
     535             : 
     536           5 :                 pqpair->stat = &group->stats;
     537           5 :                 pqpair->shared_stats = true;
     538             :         } else {
     539           0 :                 if (pqpair->stat == NULL) {
     540           0 :                         pqpair->stat = calloc(1, sizeof(*pqpair->stat));
     541           0 :                         if (!pqpair->stat) {
     542           0 :                                 SPDK_ERRLOG("Failed to allocate qpair statistics\n");
     543           0 :                                 nvme_qpair_set_state(qpair, NVME_QPAIR_DISCONNECTED);
     544           0 :                                 return -ENOMEM;
     545             :                         }
     546             :                 }
     547             :         }
     548             : 
     549           5 :         rc = nvme_pcie_ctrlr_cmd_create_io_cq(ctrlr, qpair, nvme_completion_create_cq_cb, qpair);
     550             : 
     551           5 :         if (rc != 0) {
     552           1 :                 SPDK_ERRLOG("Failed to send request to create_io_cq\n");
     553           1 :                 nvme_qpair_set_state(qpair, NVME_QPAIR_DISCONNECTED);
     554           1 :                 return rc;
     555             :         }
     556           4 :         pqpair->pcie_state = NVME_PCIE_QPAIR_WAIT_FOR_CQ;
     557           4 :         return 0;
     558             : }
     559             : 
     560             : int
     561           5 : nvme_pcie_ctrlr_connect_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair)
     562             : {
     563           5 :         int rc = 0;
     564             : 
     565           5 :         if (!nvme_qpair_is_admin_queue(qpair)) {
     566           5 :                 rc = _nvme_pcie_ctrlr_create_io_qpair(ctrlr, qpair, qpair->id);
     567             :         } else {
     568           0 :                 nvme_qpair_set_state(qpair, NVME_QPAIR_CONNECTED);
     569             :         }
     570             : 
     571           5 :         return rc;
     572             : }
     573             : 
     574             : void
     575           0 : nvme_pcie_ctrlr_disconnect_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair)
     576             : {
     577           0 :         if (!nvme_qpair_is_admin_queue(qpair) || !ctrlr->is_disconnecting) {
     578           0 :                 nvme_transport_ctrlr_disconnect_qpair_done(qpair);
     579             :         } else {
     580             :                 /* If this function is called for the admin qpair via spdk_nvme_ctrlr_reset()
     581             :                  * or spdk_nvme_ctrlr_disconnect(), initiate a Controller Level Reset.
     582             :                  * Then we can abort trackers safely because the Controller Level Reset deletes
     583             :                  * all I/O SQ/CQs.
     584             :                  */
     585           0 :                 nvme_ctrlr_disable(ctrlr);
     586             :         }
     587           0 : }
     588             : 
     589             : /* Used when dst points to MMIO (i.e. CMB) in a virtual machine - in these cases we must
     590             :  * not use wide instructions because QEMU will not emulate such instructions to MMIO space.
     591             :  * So this function ensures we only copy 8 bytes at a time.
     592             :  */
     593             : static inline void
     594           0 : nvme_pcie_copy_command_mmio(struct spdk_nvme_cmd *dst, const struct spdk_nvme_cmd *src)
     595             : {
     596           0 :         uint64_t *dst64 = (uint64_t *)dst;
     597           0 :         const uint64_t *src64 = (const uint64_t *)src;
     598             :         uint32_t i;
     599             : 
     600           0 :         for (i = 0; i < sizeof(*dst) / 8; i++) {
     601           0 :                 dst64[i] = src64[i];
     602             :         }
     603           0 : }
     604             : 
     605             : static inline void
     606           0 : nvme_pcie_copy_command(struct spdk_nvme_cmd *dst, const struct spdk_nvme_cmd *src)
     607             : {
     608             :         /* dst and src are known to be non-overlapping and 64-byte aligned. */
     609             : #if defined(__SSE2__)
     610           0 :         __m128i *d128 = (__m128i *)dst;
     611           0 :         const __m128i *s128 = (const __m128i *)src;
     612             : 
     613           0 :         _mm_stream_si128(&d128[0], _mm_load_si128(&s128[0]));
     614           0 :         _mm_stream_si128(&d128[1], _mm_load_si128(&s128[1]));
     615           0 :         _mm_stream_si128(&d128[2], _mm_load_si128(&s128[2]));
     616           0 :         _mm_stream_si128(&d128[3], _mm_load_si128(&s128[3]));
     617             : #else
     618             :         *dst = *src;
     619             : #endif
     620           0 : }
     621             : 
     622             : void
     623           0 : nvme_pcie_qpair_submit_tracker(struct spdk_nvme_qpair *qpair, struct nvme_tracker *tr)
     624             : {
     625             :         struct nvme_request     *req;
     626           0 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     627           0 :         struct spdk_nvme_ctrlr  *ctrlr = qpair->ctrlr;
     628             : 
     629           0 :         req = tr->req;
     630           0 :         assert(req != NULL);
     631             : 
     632           0 :         spdk_trace_record(TRACE_NVME_PCIE_SUBMIT, qpair->id, 0, (uintptr_t)req, req->cb_arg,
     633             :                           (uint32_t)req->cmd.cid, (uint32_t)req->cmd.opc,
     634             :                           req->cmd.cdw10, req->cmd.cdw11, req->cmd.cdw12,
     635             :                           pqpair->qpair.queue_depth);
     636             : 
     637           0 :         if (req->cmd.fuse) {
     638             :                 /*
     639             :                  * Keep track of the fuse operation sequence so that we ring the doorbell only
     640             :                  * after the second fuse is submitted.
     641             :                  */
     642           0 :                 qpair->last_fuse = req->cmd.fuse;
     643             :         }
     644             : 
     645             :         /* Don't use wide instructions to copy NVMe command, this is limited by QEMU
     646             :          * virtual NVMe controller, the maximum access width is 8 Bytes for one time.
     647             :          */
     648           0 :         if (spdk_unlikely((ctrlr->quirks & NVME_QUIRK_MAXIMUM_PCI_ACCESS_WIDTH) && pqpair->sq_in_cmb)) {
     649           0 :                 nvme_pcie_copy_command_mmio(&pqpair->cmd[pqpair->sq_tail], &req->cmd);
     650             :         } else {
     651             :                 /* Copy the command from the tracker to the submission queue. */
     652           0 :                 nvme_pcie_copy_command(&pqpair->cmd[pqpair->sq_tail], &req->cmd);
     653             :         }
     654             : 
     655           0 :         if (spdk_unlikely(++pqpair->sq_tail == pqpair->num_entries)) {
     656           0 :                 pqpair->sq_tail = 0;
     657             :         }
     658             : 
     659           0 :         if (spdk_unlikely(pqpair->sq_tail == pqpair->sq_head)) {
     660           0 :                 SPDK_ERRLOG("sq_tail is passing sq_head!\n");
     661             :         }
     662             : 
     663           0 :         if (!pqpair->flags.delay_cmd_submit) {
     664           0 :                 nvme_pcie_qpair_ring_sq_doorbell(qpair);
     665             :         }
     666           0 : }
     667             : 
     668             : void
     669           0 : nvme_pcie_qpair_complete_tracker(struct spdk_nvme_qpair *qpair, struct nvme_tracker *tr,
     670             :                                  struct spdk_nvme_cpl *cpl, bool print_on_error)
     671             : {
     672           0 :         struct nvme_pcie_qpair          *pqpair = nvme_pcie_qpair(qpair);
     673             :         struct nvme_request             *req;
     674             :         bool                            retry, error;
     675             :         bool                            print_error;
     676             : 
     677           0 :         req = tr->req;
     678             : 
     679           0 :         spdk_trace_record(TRACE_NVME_PCIE_COMPLETE, qpair->id, 0, (uintptr_t)req, req->cb_arg,
     680             :                           (uint32_t)req->cmd.cid, (uint32_t)cpl->status_raw, pqpair->qpair.queue_depth);
     681             : 
     682           0 :         assert(req != NULL);
     683             : 
     684           0 :         error = spdk_nvme_cpl_is_error(cpl);
     685           0 :         retry = error && nvme_completion_is_retry(cpl) &&
     686           0 :                 req->retries < pqpair->retry_count;
     687           0 :         print_error = error && print_on_error && !qpair->ctrlr->opts.disable_error_logging;
     688             : 
     689           0 :         if (print_error) {
     690           0 :                 spdk_nvme_qpair_print_command(qpair, &req->cmd);
     691             :         }
     692             : 
     693           0 :         if (print_error || SPDK_DEBUGLOG_FLAG_ENABLED("nvme")) {
     694           0 :                 spdk_nvme_qpair_print_completion(qpair, cpl);
     695             :         }
     696             : 
     697           0 :         assert(cpl->cid == req->cmd.cid);
     698             : 
     699           0 :         if (retry) {
     700           0 :                 req->retries++;
     701           0 :                 nvme_pcie_qpair_submit_tracker(qpair, tr);
     702             :         } else {
     703           0 :                 TAILQ_REMOVE(&pqpair->outstanding_tr, tr, tq_list);
     704           0 :                 pqpair->qpair.queue_depth--;
     705             : 
     706             :                 /* Only check admin requests from different processes. */
     707           0 :                 if (nvme_qpair_is_admin_queue(qpair) && req->pid != getpid()) {
     708           0 :                         nvme_pcie_qpair_insert_pending_admin_request(qpair, req, cpl);
     709             :                 } else {
     710           0 :                         nvme_complete_request(tr->cb_fn, tr->cb_arg, qpair, req, cpl);
     711             :                 }
     712             : 
     713           0 :                 tr->req = NULL;
     714             : 
     715           0 :                 TAILQ_INSERT_HEAD(&pqpair->free_tr, tr, tq_list);
     716             :         }
     717           0 : }
     718             : 
     719             : void
     720           0 : nvme_pcie_qpair_manual_complete_tracker(struct spdk_nvme_qpair *qpair,
     721             :                                         struct nvme_tracker *tr, uint32_t sct, uint32_t sc, uint32_t dnr,
     722             :                                         bool print_on_error)
     723             : {
     724           0 :         struct spdk_nvme_cpl    cpl;
     725             : 
     726           0 :         memset(&cpl, 0, sizeof(cpl));
     727           0 :         cpl.sqid = qpair->id;
     728           0 :         cpl.cid = tr->cid;
     729           0 :         cpl.status.sct = sct;
     730           0 :         cpl.status.sc = sc;
     731           0 :         cpl.status.dnr = dnr;
     732           0 :         nvme_pcie_qpair_complete_tracker(qpair, tr, &cpl, print_on_error);
     733           0 : }
     734             : 
     735             : void
     736           0 : nvme_pcie_qpair_abort_trackers(struct spdk_nvme_qpair *qpair, uint32_t dnr)
     737             : {
     738           0 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     739             :         struct nvme_tracker *tr, *temp, *last;
     740             : 
     741           0 :         last = TAILQ_LAST(&pqpair->outstanding_tr, nvme_outstanding_tr_head);
     742             : 
     743             :         /* Abort previously submitted (outstanding) trs */
     744           0 :         TAILQ_FOREACH_SAFE(tr, &pqpair->outstanding_tr, tq_list, temp) {
     745           0 :                 if (!qpair->ctrlr->opts.disable_error_logging) {
     746           0 :                         SPDK_ERRLOG("aborting outstanding command\n");
     747             :                 }
     748           0 :                 nvme_pcie_qpair_manual_complete_tracker(qpair, tr, SPDK_NVME_SCT_GENERIC,
     749             :                                                         SPDK_NVME_SC_ABORTED_BY_REQUEST, dnr, true);
     750             : 
     751           0 :                 if (tr == last) {
     752           0 :                         break;
     753             :                 }
     754             :         }
     755           0 : }
     756             : 
     757             : void
     758           1 : nvme_pcie_admin_qpair_abort_aers(struct spdk_nvme_qpair *qpair)
     759             : {
     760           1 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     761             :         struct nvme_tracker     *tr;
     762             : 
     763           1 :         tr = TAILQ_FIRST(&pqpair->outstanding_tr);
     764           1 :         while (tr != NULL) {
     765           0 :                 assert(tr->req != NULL);
     766           0 :                 if (tr->req->cmd.opc == SPDK_NVME_OPC_ASYNC_EVENT_REQUEST) {
     767           0 :                         nvme_pcie_qpair_manual_complete_tracker(qpair, tr,
     768             :                                                                 SPDK_NVME_SCT_GENERIC, SPDK_NVME_SC_ABORTED_SQ_DELETION, 0,
     769             :                                                                 false);
     770           0 :                         tr = TAILQ_FIRST(&pqpair->outstanding_tr);
     771             :                 } else {
     772           0 :                         tr = TAILQ_NEXT(tr, tq_list);
     773             :                 }
     774             :         }
     775           1 : }
     776             : 
     777             : void
     778           1 : nvme_pcie_admin_qpair_destroy(struct spdk_nvme_qpair *qpair)
     779             : {
     780           1 :         nvme_pcie_admin_qpair_abort_aers(qpair);
     781           1 : }
     782             : 
     783             : void
     784           0 : nvme_pcie_qpair_abort_reqs(struct spdk_nvme_qpair *qpair, uint32_t dnr)
     785             : {
     786           0 :         nvme_pcie_qpair_abort_trackers(qpair, dnr);
     787           0 : }
     788             : 
     789             : static void
     790           0 : nvme_pcie_qpair_check_timeout(struct spdk_nvme_qpair *qpair)
     791             : {
     792             :         uint64_t t02;
     793             :         struct nvme_tracker *tr, *tmp;
     794           0 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     795           0 :         struct spdk_nvme_ctrlr *ctrlr = qpair->ctrlr;
     796             :         struct spdk_nvme_ctrlr_process *active_proc;
     797             : 
     798             :         /* Don't check timeouts during controller initialization. */
     799           0 :         if (ctrlr->state != NVME_CTRLR_STATE_READY) {
     800           0 :                 return;
     801             :         }
     802             : 
     803           0 :         if (nvme_qpair_is_admin_queue(qpair)) {
     804           0 :                 active_proc = nvme_ctrlr_get_current_process(ctrlr);
     805             :         } else {
     806           0 :                 active_proc = qpair->active_proc;
     807             :         }
     808             : 
     809             :         /* Only check timeouts if the current process has a timeout callback. */
     810           0 :         if (active_proc == NULL || active_proc->timeout_cb_fn == NULL) {
     811           0 :                 return;
     812             :         }
     813             : 
     814           0 :         t02 = spdk_get_ticks();
     815           0 :         TAILQ_FOREACH_SAFE(tr, &pqpair->outstanding_tr, tq_list, tmp) {
     816           0 :                 assert(tr->req != NULL);
     817             : 
     818           0 :                 if (nvme_request_check_timeout(tr->req, tr->cid, active_proc, t02)) {
     819             :                         /*
     820             :                          * The requests are in order, so as soon as one has not timed out,
     821             :                          * stop iterating.
     822             :                          */
     823           0 :                         break;
     824             :                 }
     825             :         }
     826             : }
     827             : 
     828             : int32_t
     829           0 : nvme_pcie_qpair_process_completions(struct spdk_nvme_qpair *qpair, uint32_t max_completions)
     830             : {
     831           0 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
     832             :         struct nvme_tracker     *tr;
     833             :         struct spdk_nvme_cpl    *cpl, *next_cpl;
     834           0 :         uint32_t                 num_completions = 0;
     835           0 :         struct spdk_nvme_ctrlr  *ctrlr = qpair->ctrlr;
     836             :         uint16_t                 next_cq_head;
     837             :         uint8_t                  next_phase;
     838           0 :         bool                     next_is_valid = false;
     839             :         int                      rc;
     840             : 
     841           0 :         if (spdk_unlikely(pqpair->pcie_state == NVME_PCIE_QPAIR_FAILED)) {
     842           0 :                 return -ENXIO;
     843             :         }
     844             : 
     845           0 :         if (spdk_unlikely(nvme_qpair_get_state(qpair) == NVME_QPAIR_CONNECTING)) {
     846           0 :                 if (pqpair->pcie_state == NVME_PCIE_QPAIR_READY) {
     847             :                         /* It is possible that another thread set the pcie_state to
     848             :                          * QPAIR_READY, if it polled the adminq and processed the SQ
     849             :                          * completion for this qpair.  So check for that condition
     850             :                          * here and then update the qpair's state to CONNECTED, since
     851             :                          * we can only set the qpair state from the qpair's thread.
     852             :                          * (Note: this fixed issue #2157.)
     853             :                          */
     854           0 :                         nvme_qpair_set_state(qpair, NVME_QPAIR_CONNECTED);
     855           0 :                 } else if (pqpair->pcie_state == NVME_PCIE_QPAIR_FAILED) {
     856           0 :                         nvme_qpair_set_state(qpair, NVME_QPAIR_DISCONNECTED);
     857           0 :                         return -ENXIO;
     858             :                 } else {
     859           0 :                         rc = spdk_nvme_qpair_process_completions(ctrlr->adminq, 0);
     860           0 :                         if (rc < 0) {
     861           0 :                                 return rc;
     862           0 :                         } else if (pqpair->pcie_state == NVME_PCIE_QPAIR_FAILED) {
     863           0 :                                 nvme_qpair_set_state(qpair, NVME_QPAIR_DISCONNECTED);
     864           0 :                                 return -ENXIO;
     865             :                         }
     866             :                 }
     867           0 :                 return 0;
     868             :         }
     869             : 
     870           0 :         if (spdk_unlikely(nvme_qpair_is_admin_queue(qpair))) {
     871           0 :                 nvme_ctrlr_lock(ctrlr);
     872             :         }
     873             : 
     874           0 :         if (max_completions == 0 || max_completions > pqpair->max_completions_cap) {
     875             :                 /*
     876             :                  * max_completions == 0 means unlimited, but complete at most
     877             :                  * max_completions_cap batch of I/O at a time so that the completion
     878             :                  * queue doorbells don't wrap around.
     879             :                  */
     880           0 :                 max_completions = pqpair->max_completions_cap;
     881             :         }
     882             : 
     883           0 :         pqpair->stat->polls++;
     884             : 
     885             :         while (1) {
     886           0 :                 cpl = &pqpair->cpl[pqpair->cq_head];
     887             : 
     888           0 :                 if (!next_is_valid && cpl->status.p != pqpair->flags.phase) {
     889           0 :                         break;
     890             :                 }
     891             : 
     892           0 :                 if (spdk_likely(pqpair->cq_head + 1 != pqpair->num_entries)) {
     893           0 :                         next_cq_head = pqpair->cq_head + 1;
     894           0 :                         next_phase = pqpair->flags.phase;
     895             :                 } else {
     896           0 :                         next_cq_head = 0;
     897           0 :                         next_phase = !pqpair->flags.phase;
     898             :                 }
     899           0 :                 next_cpl = &pqpair->cpl[next_cq_head];
     900           0 :                 next_is_valid = (next_cpl->status.p == next_phase);
     901           0 :                 if (next_is_valid) {
     902           0 :                         __builtin_prefetch(&pqpair->tr[next_cpl->cid]);
     903             :                 }
     904             : 
     905             : #if defined(__PPC64__) || defined(__riscv) || defined(__loongarch__)
     906             :                 /*
     907             :                  * This memory barrier prevents reordering of:
     908             :                  * - load after store from/to tr
     909             :                  * - load after load cpl phase and cpl cid
     910             :                  */
     911             :                 spdk_mb();
     912             : #elif defined(__aarch64__)
     913             :                 __asm volatile("dmb oshld" ::: "memory");
     914             : #endif
     915             : 
     916           0 :                 if (spdk_unlikely(++pqpair->cq_head == pqpair->num_entries)) {
     917           0 :                         pqpair->cq_head = 0;
     918           0 :                         pqpair->flags.phase = !pqpair->flags.phase;
     919             :                 }
     920             : 
     921           0 :                 tr = &pqpair->tr[cpl->cid];
     922           0 :                 pqpair->sq_head = cpl->sqhd;
     923             : 
     924           0 :                 if (tr->req) {
     925             :                         /* Prefetch the req's STAILQ_ENTRY since we'll need to access it
     926             :                          * as part of putting the req back on the qpair's free list.
     927             :                          */
     928           0 :                         __builtin_prefetch(&tr->req->stailq);
     929           0 :                         nvme_pcie_qpair_complete_tracker(qpair, tr, cpl, true);
     930             :                 } else {
     931           0 :                         SPDK_ERRLOG("cpl does not map to outstanding cmd\n");
     932           0 :                         spdk_nvme_qpair_print_completion(qpair, cpl);
     933           0 :                         assert(0);
     934             :                 }
     935             : 
     936           0 :                 if (++num_completions == max_completions) {
     937           0 :                         break;
     938             :                 }
     939             :         }
     940             : 
     941           0 :         if (num_completions > 0) {
     942           0 :                 pqpair->stat->completions += num_completions;
     943           0 :                 nvme_pcie_qpair_ring_cq_doorbell(qpair);
     944             :         } else {
     945           0 :                 pqpair->stat->idle_polls++;
     946             :         }
     947             : 
     948           0 :         if (pqpair->flags.delay_cmd_submit) {
     949           0 :                 if (pqpair->last_sq_tail != pqpair->sq_tail) {
     950           0 :                         nvme_pcie_qpair_ring_sq_doorbell(qpair);
     951           0 :                         pqpair->last_sq_tail = pqpair->sq_tail;
     952             :                 }
     953             :         }
     954             : 
     955           0 :         if (spdk_unlikely(ctrlr->timeout_enabled)) {
     956             :                 /*
     957             :                  * User registered for timeout callback
     958             :                  */
     959           0 :                 nvme_pcie_qpair_check_timeout(qpair);
     960             :         }
     961             : 
     962             :         /* Before returning, complete any pending admin request or
     963             :          * process the admin qpair disconnection.
     964             :          */
     965           0 :         if (spdk_unlikely(nvme_qpair_is_admin_queue(qpair))) {
     966           0 :                 nvme_pcie_qpair_complete_pending_admin_request(qpair);
     967             : 
     968           0 :                 if (nvme_qpair_get_state(qpair) == NVME_QPAIR_DISCONNECTING) {
     969           0 :                         rc = nvme_ctrlr_disable_poll(qpair->ctrlr);
     970           0 :                         if (rc != -EAGAIN) {
     971           0 :                                 nvme_transport_ctrlr_disconnect_qpair_done(qpair);
     972             :                         }
     973             :                 }
     974             : 
     975           0 :                 nvme_ctrlr_unlock(ctrlr);
     976             :         }
     977             : 
     978           0 :         if (spdk_unlikely(pqpair->flags.has_pending_vtophys_failures)) {
     979             :                 struct nvme_tracker *tr, *tmp;
     980             : 
     981           0 :                 TAILQ_FOREACH_SAFE(tr, &pqpair->outstanding_tr, tq_list, tmp) {
     982           0 :                         if (tr->bad_vtophys) {
     983           0 :                                 tr->bad_vtophys = 0;
     984           0 :                                 nvme_pcie_fail_request_bad_vtophys(qpair, tr);
     985             :                         }
     986             :                 }
     987           0 :                 pqpair->flags.has_pending_vtophys_failures = 0;
     988             :         }
     989             : 
     990           0 :         return num_completions;
     991             : }
     992             : 
     993             : int
     994           4 : nvme_pcie_qpair_destroy(struct spdk_nvme_qpair *qpair)
     995             : {
     996           4 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
     997             : 
     998           4 :         if (nvme_qpair_is_admin_queue(qpair)) {
     999           1 :                 nvme_pcie_admin_qpair_destroy(qpair);
    1000             :         }
    1001             :         /*
    1002             :          * We check sq_vaddr and cq_vaddr to see if the user specified the memory
    1003             :          * buffers when creating the I/O queue.
    1004             :          * If the user specified them, we cannot free that memory.
    1005             :          * Nor do we free it if it's in the CMB.
    1006             :          */
    1007           4 :         if (!pqpair->sq_vaddr && pqpair->cmd && !pqpair->sq_in_cmb) {
    1008           2 :                 spdk_free(pqpair->cmd);
    1009             :         }
    1010           4 :         if (!pqpair->cq_vaddr && pqpair->cpl) {
    1011           2 :                 spdk_free(pqpair->cpl);
    1012             :         }
    1013           4 :         if (pqpair->tr) {
    1014           4 :                 spdk_free(pqpair->tr);
    1015             :         }
    1016             : 
    1017           4 :         nvme_qpair_deinit(qpair);
    1018             : 
    1019           4 :         if (!pqpair->shared_stats && (!qpair->active_proc ||
    1020           0 :                                       qpair->active_proc == nvme_ctrlr_get_current_process(qpair->ctrlr))) {
    1021           4 :                 if (qpair->id) {
    1022           3 :                         free(pqpair->stat);
    1023             :                 } else {
    1024             :                         /* statistics of admin qpair are allocates from huge pages because
    1025             :                          * admin qpair is shared for multi-process */
    1026           1 :                         spdk_free(pqpair->stat);
    1027             :                 }
    1028             : 
    1029             :         }
    1030             : 
    1031           4 :         spdk_free(pqpair);
    1032             : 
    1033           4 :         return 0;
    1034             : }
    1035             : 
    1036             : struct spdk_nvme_qpair *
    1037           0 : nvme_pcie_ctrlr_create_io_qpair(struct spdk_nvme_ctrlr *ctrlr, uint16_t qid,
    1038             :                                 const struct spdk_nvme_io_qpair_opts *opts)
    1039             : {
    1040             :         struct nvme_pcie_qpair *pqpair;
    1041             :         struct spdk_nvme_qpair *qpair;
    1042             :         int rc;
    1043             : 
    1044           0 :         assert(ctrlr != NULL);
    1045             : 
    1046           0 :         pqpair = spdk_zmalloc(sizeof(*pqpair), 64, NULL,
    1047             :                               SPDK_ENV_SOCKET_ID_ANY, SPDK_MALLOC_SHARE);
    1048           0 :         if (pqpair == NULL) {
    1049           0 :                 return NULL;
    1050             :         }
    1051             : 
    1052           0 :         pqpair->num_entries = opts->io_queue_size;
    1053           0 :         pqpair->flags.delay_cmd_submit = opts->delay_cmd_submit;
    1054             : 
    1055           0 :         qpair = &pqpair->qpair;
    1056             : 
    1057           0 :         rc = nvme_qpair_init(qpair, qid, ctrlr, opts->qprio, opts->io_queue_requests, opts->async_mode);
    1058           0 :         if (rc != 0) {
    1059           0 :                 nvme_pcie_qpair_destroy(qpair);
    1060           0 :                 return NULL;
    1061             :         }
    1062             : 
    1063           0 :         rc = nvme_pcie_qpair_construct(qpair, opts);
    1064             : 
    1065           0 :         if (rc != 0) {
    1066           0 :                 nvme_pcie_qpair_destroy(qpair);
    1067           0 :                 return NULL;
    1068             :         }
    1069             : 
    1070           0 :         return qpair;
    1071             : }
    1072             : 
    1073             : int
    1074           0 : nvme_pcie_ctrlr_delete_io_qpair(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair)
    1075             : {
    1076           0 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
    1077             :         struct nvme_completion_poll_status *status;
    1078             :         int rc;
    1079             : 
    1080           0 :         assert(ctrlr != NULL);
    1081             : 
    1082           0 :         if (ctrlr->is_removed) {
    1083           0 :                 goto free;
    1084             :         }
    1085             : 
    1086           0 :         if (ctrlr->prepare_for_reset) {
    1087           0 :                 if (nvme_qpair_get_state(qpair) == NVME_QPAIR_CONNECTING) {
    1088           0 :                         pqpair->flags.defer_destruction = true;
    1089             :                 }
    1090           0 :                 goto clear_shadow_doorbells;
    1091             :         }
    1092             : 
    1093             :         /* If attempting to delete a qpair that's still being connected, we have to wait until it's
    1094             :          * finished, so that we don't free it while it's waiting for the create cq/sq callbacks.
    1095             :          */
    1096           0 :         while (pqpair->pcie_state == NVME_PCIE_QPAIR_WAIT_FOR_CQ ||
    1097           0 :                pqpair->pcie_state == NVME_PCIE_QPAIR_WAIT_FOR_SQ) {
    1098           0 :                 rc = spdk_nvme_qpair_process_completions(ctrlr->adminq, 0);
    1099           0 :                 if (rc < 0) {
    1100           0 :                         break;
    1101             :                 }
    1102             :         }
    1103             : 
    1104           0 :         status = calloc(1, sizeof(*status));
    1105           0 :         if (!status) {
    1106           0 :                 SPDK_ERRLOG("Failed to allocate status tracker\n");
    1107           0 :                 goto free;
    1108             :         }
    1109             : 
    1110             :         /* Delete the I/O submission queue */
    1111           0 :         rc = nvme_pcie_ctrlr_cmd_delete_io_sq(ctrlr, qpair, nvme_completion_poll_cb, status);
    1112           0 :         if (rc != 0) {
    1113           0 :                 SPDK_ERRLOG("Failed to send request to delete_io_sq with rc=%d\n", rc);
    1114           0 :                 free(status);
    1115           0 :                 goto free;
    1116             :         }
    1117           0 :         if (nvme_wait_for_completion(ctrlr->adminq, status)) {
    1118           0 :                 if (!status->timed_out) {
    1119           0 :                         free(status);
    1120             :                 }
    1121           0 :                 goto free;
    1122             :         }
    1123             : 
    1124             :         /* Now that the submission queue is deleted, the device is supposed to have
    1125             :          * completed any outstanding I/O. Try to complete them. If they don't complete,
    1126             :          * they'll be marked as aborted and completed below. */
    1127           0 :         if (qpair->active_proc == nvme_ctrlr_get_current_process(ctrlr)) {
    1128           0 :                 nvme_pcie_qpair_process_completions(qpair, 0);
    1129             :         }
    1130             : 
    1131           0 :         memset(status, 0, sizeof(*status));
    1132             :         /* Delete the completion queue */
    1133           0 :         rc = nvme_pcie_ctrlr_cmd_delete_io_cq(ctrlr, qpair, nvme_completion_poll_cb, status);
    1134           0 :         if (rc != 0) {
    1135           0 :                 SPDK_ERRLOG("Failed to send request to delete_io_cq with rc=%d\n", rc);
    1136           0 :                 free(status);
    1137           0 :                 goto free;
    1138             :         }
    1139           0 :         if (nvme_wait_for_completion(ctrlr->adminq, status)) {
    1140           0 :                 if (!status->timed_out) {
    1141           0 :                         free(status);
    1142             :                 }
    1143           0 :                 goto free;
    1144             :         }
    1145           0 :         free(status);
    1146             : 
    1147           0 : clear_shadow_doorbells:
    1148           0 :         if (pqpair->flags.has_shadow_doorbell && ctrlr->shadow_doorbell) {
    1149           0 :                 *pqpair->shadow_doorbell.sq_tdbl = 0;
    1150           0 :                 *pqpair->shadow_doorbell.cq_hdbl = 0;
    1151           0 :                 *pqpair->shadow_doorbell.sq_eventidx = 0;
    1152           0 :                 *pqpair->shadow_doorbell.cq_eventidx = 0;
    1153             :         }
    1154           0 : free:
    1155           0 :         if (qpair->no_deletion_notification_needed == 0) {
    1156             :                 /* Abort the rest of the I/O */
    1157           0 :                 nvme_pcie_qpair_abort_trackers(qpair, 1);
    1158             :         }
    1159             : 
    1160           0 :         if (!pqpair->flags.defer_destruction) {
    1161           0 :                 nvme_pcie_qpair_destroy(qpair);
    1162             :         }
    1163           0 :         return 0;
    1164             : }
    1165             : 
    1166             : static void
    1167           3 : nvme_pcie_fail_request_bad_vtophys(struct spdk_nvme_qpair *qpair, struct nvme_tracker *tr)
    1168             : {
    1169           3 :         if (!qpair->in_completion_context) {
    1170           3 :                 struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
    1171             : 
    1172           3 :                 tr->bad_vtophys = 1;
    1173           3 :                 pqpair->flags.has_pending_vtophys_failures = 1;
    1174           3 :                 return;
    1175             :         }
    1176             : 
    1177             :         /*
    1178             :          * Bad vtophys translation, so abort this request and return
    1179             :          *  immediately.
    1180             :          */
    1181           0 :         SPDK_ERRLOG("vtophys or other payload buffer related error\n");
    1182           0 :         nvme_pcie_qpair_manual_complete_tracker(qpair, tr, SPDK_NVME_SCT_GENERIC,
    1183             :                                                 SPDK_NVME_SC_INVALID_FIELD,
    1184             :                                                 1 /* do not retry */, true);
    1185             : }
    1186             : 
    1187             : /*
    1188             :  * Append PRP list entries to describe a virtually contiguous buffer starting at virt_addr of len bytes.
    1189             :  *
    1190             :  * *prp_index will be updated to account for the number of PRP entries used.
    1191             :  */
    1192             : static inline int
    1193          25 : nvme_pcie_prp_list_append(struct spdk_nvme_ctrlr *ctrlr, struct nvme_tracker *tr,
    1194             :                           uint32_t *prp_index, void *virt_addr, size_t len,
    1195             :                           uint32_t page_size)
    1196             : {
    1197          25 :         struct spdk_nvme_cmd *cmd = &tr->req->cmd;
    1198          25 :         uintptr_t page_mask = page_size - 1;
    1199             :         uint64_t phys_addr;
    1200             :         uint32_t i;
    1201             : 
    1202          25 :         SPDK_DEBUGLOG(nvme, "prp_index:%u virt_addr:%p len:%u\n",
    1203             :                       *prp_index, virt_addr, (uint32_t)len);
    1204             : 
    1205          25 :         if (spdk_unlikely(((uintptr_t)virt_addr & 3) != 0)) {
    1206           2 :                 SPDK_ERRLOG("virt_addr %p not dword aligned\n", virt_addr);
    1207           2 :                 return -EFAULT;
    1208             :         }
    1209             : 
    1210          23 :         i = *prp_index;
    1211        2070 :         while (len) {
    1212             :                 uint32_t seg_len;
    1213             : 
    1214             :                 /*
    1215             :                  * prp_index 0 is stored in prp1, and the rest are stored in the prp[] array,
    1216             :                  * so prp_index == count is valid.
    1217             :                  */
    1218        2051 :                 if (spdk_unlikely(i > SPDK_COUNTOF(tr->u.prp))) {
    1219           2 :                         SPDK_ERRLOG("out of PRP entries\n");
    1220           2 :                         return -EFAULT;
    1221             :                 }
    1222             : 
    1223        2049 :                 phys_addr = nvme_pcie_vtophys(ctrlr, virt_addr, NULL);
    1224        2049 :                 if (spdk_unlikely(phys_addr == SPDK_VTOPHYS_ERROR)) {
    1225           1 :                         SPDK_ERRLOG("vtophys(%p) failed\n", virt_addr);
    1226           1 :                         return -EFAULT;
    1227             :                 }
    1228             : 
    1229        2048 :                 if (i == 0) {
    1230          19 :                         SPDK_DEBUGLOG(nvme, "prp1 = %p\n", (void *)phys_addr);
    1231          19 :                         cmd->dptr.prp.prp1 = phys_addr;
    1232          19 :                         seg_len = page_size - ((uintptr_t)virt_addr & page_mask);
    1233             :                 } else {
    1234        2029 :                         if ((phys_addr & page_mask) != 0) {
    1235           1 :                                 SPDK_ERRLOG("PRP %u not page aligned (%p)\n", i, virt_addr);
    1236           1 :                                 return -EFAULT;
    1237             :                         }
    1238             : 
    1239        2028 :                         SPDK_DEBUGLOG(nvme, "prp[%u] = %p\n", i - 1, (void *)phys_addr);
    1240        2028 :                         tr->u.prp[i - 1] = phys_addr;
    1241        2028 :                         seg_len = page_size;
    1242             :                 }
    1243             : 
    1244        2047 :                 seg_len = spdk_min(seg_len, len);
    1245        2047 :                 virt_addr = (uint8_t *)virt_addr + seg_len;
    1246        2047 :                 len -= seg_len;
    1247        2047 :                 i++;
    1248             :         }
    1249             : 
    1250          19 :         cmd->psdt = SPDK_NVME_PSDT_PRP;
    1251          19 :         if (i <= 1) {
    1252           6 :                 cmd->dptr.prp.prp2 = 0;
    1253          13 :         } else if (i == 2) {
    1254           6 :                 cmd->dptr.prp.prp2 = tr->u.prp[0];
    1255           6 :                 SPDK_DEBUGLOG(nvme, "prp2 = %p\n", (void *)cmd->dptr.prp.prp2);
    1256             :         } else {
    1257           7 :                 cmd->dptr.prp.prp2 = tr->prp_sgl_bus_addr;
    1258           7 :                 SPDK_DEBUGLOG(nvme, "prp2 = %p (PRP list)\n", (void *)cmd->dptr.prp.prp2);
    1259             :         }
    1260             : 
    1261          19 :         *prp_index = i;
    1262          19 :         return 0;
    1263             : }
    1264             : 
    1265             : static int
    1266           0 : nvme_pcie_qpair_build_request_invalid(struct spdk_nvme_qpair *qpair,
    1267             :                                       struct nvme_request *req, struct nvme_tracker *tr, bool dword_aligned)
    1268             : {
    1269           0 :         assert(0);
    1270             :         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1271             :         return -EINVAL;
    1272             : }
    1273             : 
    1274             : /**
    1275             :  * Build PRP list describing physically contiguous payload buffer.
    1276             :  */
    1277             : static int
    1278           4 : nvme_pcie_qpair_build_contig_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req,
    1279             :                                      struct nvme_tracker *tr, bool dword_aligned)
    1280             : {
    1281           4 :         uint32_t prp_index = 0;
    1282             :         int rc;
    1283             : 
    1284           4 :         rc = nvme_pcie_prp_list_append(qpair->ctrlr, tr, &prp_index,
    1285           4 :                                        (uint8_t *)req->payload.contig_or_cb_arg + req->payload_offset,
    1286           4 :                                        req->payload_size, qpair->ctrlr->page_size);
    1287           4 :         if (rc) {
    1288           1 :                 nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1289             :         } else {
    1290           3 :                 SPDK_DEBUGLOG(nvme, "Number of PRP entries: %" PRIu32 "\n", prp_index);
    1291             :         }
    1292             : 
    1293           4 :         return rc;
    1294             : }
    1295             : 
    1296             : /**
    1297             :  * Build an SGL describing a physically contiguous payload buffer.
    1298             :  *
    1299             :  * This is more efficient than using PRP because large buffers can be
    1300             :  * described this way.
    1301             :  */
    1302             : static int
    1303           3 : nvme_pcie_qpair_build_contig_hw_sgl_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req,
    1304             :                 struct nvme_tracker *tr, bool dword_aligned)
    1305             : {
    1306             :         uint8_t *virt_addr;
    1307           3 :         uint64_t phys_addr, mapping_length;
    1308             :         uint32_t length;
    1309             :         struct spdk_nvme_sgl_descriptor *sgl;
    1310           3 :         uint32_t nseg = 0;
    1311             : 
    1312           3 :         assert(req->payload_size != 0);
    1313           3 :         assert(nvme_payload_type(&req->payload) == NVME_PAYLOAD_TYPE_CONTIG);
    1314             : 
    1315           3 :         sgl = tr->u.sgl;
    1316           3 :         req->cmd.psdt = SPDK_NVME_PSDT_SGL_MPTR_CONTIG;
    1317           3 :         req->cmd.dptr.sgl1.unkeyed.subtype = 0;
    1318             : 
    1319           3 :         length = req->payload_size;
    1320             :         /* ubsan complains about applying zero offset to null pointer if contig_or_cb_arg is NULL,
    1321             :          * so just double cast it to make it go away */
    1322           3 :         virt_addr = (uint8_t *)((uintptr_t)req->payload.contig_or_cb_arg + req->payload_offset);
    1323             : 
    1324           7 :         while (length > 0) {
    1325           4 :                 if (nseg >= NVME_MAX_SGL_DESCRIPTORS) {
    1326           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1327           0 :                         return -EFAULT;
    1328             :                 }
    1329             : 
    1330           4 :                 if (dword_aligned && ((uintptr_t)virt_addr & 3)) {
    1331           0 :                         SPDK_ERRLOG("virt_addr %p not dword aligned\n", virt_addr);
    1332           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1333           0 :                         return -EFAULT;
    1334             :                 }
    1335             : 
    1336           4 :                 mapping_length = length;
    1337           4 :                 phys_addr = nvme_pcie_vtophys(qpair->ctrlr, virt_addr, &mapping_length);
    1338           4 :                 if (phys_addr == SPDK_VTOPHYS_ERROR) {
    1339           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1340           0 :                         return -EFAULT;
    1341             :                 }
    1342             : 
    1343           4 :                 mapping_length = spdk_min(length, mapping_length);
    1344             : 
    1345           4 :                 length -= mapping_length;
    1346           4 :                 virt_addr += mapping_length;
    1347             : 
    1348           4 :                 sgl->unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1349           4 :                 sgl->unkeyed.length = mapping_length;
    1350           4 :                 sgl->address = phys_addr;
    1351           4 :                 sgl->unkeyed.subtype = 0;
    1352             : 
    1353           4 :                 sgl++;
    1354           4 :                 nseg++;
    1355             :         }
    1356             : 
    1357           3 :         if (nseg == 1) {
    1358             :                 /*
    1359             :                  * The whole transfer can be described by a single SGL descriptor.
    1360             :                  *  Use the special case described by the spec where SGL1's type is Data Block.
    1361             :                  *  This means the SGL in the tracker is not used at all, so copy the first (and only)
    1362             :                  *  SGL element into SGL1.
    1363             :                  */
    1364           2 :                 req->cmd.dptr.sgl1.unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1365           2 :                 req->cmd.dptr.sgl1.address = tr->u.sgl[0].address;
    1366           2 :                 req->cmd.dptr.sgl1.unkeyed.length = tr->u.sgl[0].unkeyed.length;
    1367             :         } else {
    1368             :                 /* SPDK NVMe driver supports only 1 SGL segment for now, it is enough because
    1369             :                  *  NVME_MAX_SGL_DESCRIPTORS * 16 is less than one page.
    1370             :                  */
    1371           1 :                 req->cmd.dptr.sgl1.unkeyed.type = SPDK_NVME_SGL_TYPE_LAST_SEGMENT;
    1372           1 :                 req->cmd.dptr.sgl1.address = tr->prp_sgl_bus_addr;
    1373           1 :                 req->cmd.dptr.sgl1.unkeyed.length = nseg * sizeof(struct spdk_nvme_sgl_descriptor);
    1374             :         }
    1375             : 
    1376           3 :         SPDK_DEBUGLOG(nvme, "Number of SGL descriptors: %" PRIu32 "\n", nseg);
    1377           3 :         return 0;
    1378             : }
    1379             : 
    1380             : /**
    1381             :  * Build SGL list describing scattered payload buffer.
    1382             :  */
    1383             : static int
    1384           2 : nvme_pcie_qpair_build_hw_sgl_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req,
    1385             :                                      struct nvme_tracker *tr, bool dword_aligned)
    1386             : {
    1387             :         int rc;
    1388           2 :         void *virt_addr;
    1389           2 :         uint64_t phys_addr, mapping_length;
    1390           2 :         uint32_t remaining_transfer_len, remaining_user_sge_len, length;
    1391             :         struct spdk_nvme_sgl_descriptor *sgl;
    1392           2 :         uint32_t nseg = 0;
    1393           2 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
    1394             : 
    1395             :         /*
    1396             :          * Build scattered payloads.
    1397             :          */
    1398           2 :         assert(req->payload_size != 0);
    1399           2 :         assert(nvme_payload_type(&req->payload) == NVME_PAYLOAD_TYPE_SGL);
    1400           2 :         assert(req->payload.reset_sgl_fn != NULL);
    1401           2 :         assert(req->payload.next_sge_fn != NULL);
    1402           2 :         req->payload.reset_sgl_fn(req->payload.contig_or_cb_arg, req->payload_offset);
    1403             : 
    1404           2 :         sgl = tr->u.sgl;
    1405           2 :         req->cmd.psdt = SPDK_NVME_PSDT_SGL_MPTR_CONTIG;
    1406           2 :         req->cmd.dptr.sgl1.unkeyed.subtype = 0;
    1407             : 
    1408           2 :         remaining_transfer_len = req->payload_size;
    1409             : 
    1410           6 :         while (remaining_transfer_len > 0) {
    1411           4 :                 rc = req->payload.next_sge_fn(req->payload.contig_or_cb_arg,
    1412             :                                               &virt_addr, &remaining_user_sge_len);
    1413           4 :                 if (rc) {
    1414           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1415           0 :                         return -EFAULT;
    1416             :                 }
    1417             : 
    1418             :                 /* Bit Bucket SGL descriptor */
    1419           4 :                 if ((uint64_t)virt_addr == UINT64_MAX) {
    1420             :                         /* TODO: enable WRITE and COMPARE when necessary */
    1421           0 :                         if (req->cmd.opc != SPDK_NVME_OPC_READ) {
    1422           0 :                                 SPDK_ERRLOG("Only READ command can be supported\n");
    1423           0 :                                 goto exit;
    1424             :                         }
    1425           0 :                         if (nseg >= NVME_MAX_SGL_DESCRIPTORS) {
    1426           0 :                                 SPDK_ERRLOG("Too many SGL entries\n");
    1427           0 :                                 goto exit;
    1428             :                         }
    1429             : 
    1430           0 :                         sgl->unkeyed.type = SPDK_NVME_SGL_TYPE_BIT_BUCKET;
    1431             :                         /* If the SGL describes a destination data buffer, the length of data
    1432             :                          * buffer shall be discarded by controller, and the length is included
    1433             :                          * in Number of Logical Blocks (NLB) parameter. Otherwise, the length
    1434             :                          * is not included in the NLB parameter.
    1435             :                          */
    1436           0 :                         remaining_user_sge_len = spdk_min(remaining_user_sge_len, remaining_transfer_len);
    1437           0 :                         remaining_transfer_len -= remaining_user_sge_len;
    1438             : 
    1439           0 :                         sgl->unkeyed.length = remaining_user_sge_len;
    1440           0 :                         sgl->address = 0;
    1441           0 :                         sgl->unkeyed.subtype = 0;
    1442             : 
    1443           0 :                         sgl++;
    1444           0 :                         nseg++;
    1445             : 
    1446           0 :                         continue;
    1447             :                 }
    1448             : 
    1449           4 :                 remaining_user_sge_len = spdk_min(remaining_user_sge_len, remaining_transfer_len);
    1450           4 :                 remaining_transfer_len -= remaining_user_sge_len;
    1451           8 :                 while (remaining_user_sge_len > 0) {
    1452           4 :                         if (nseg >= NVME_MAX_SGL_DESCRIPTORS) {
    1453           0 :                                 SPDK_ERRLOG("Too many SGL entries\n");
    1454           0 :                                 goto exit;
    1455             :                         }
    1456             : 
    1457           4 :                         if (dword_aligned && ((uintptr_t)virt_addr & 3)) {
    1458           0 :                                 SPDK_ERRLOG("virt_addr %p not dword aligned\n", virt_addr);
    1459           0 :                                 goto exit;
    1460             :                         }
    1461             : 
    1462           4 :                         mapping_length = remaining_user_sge_len;
    1463           4 :                         phys_addr = nvme_pcie_vtophys(qpair->ctrlr, virt_addr, &mapping_length);
    1464           4 :                         if (phys_addr == SPDK_VTOPHYS_ERROR) {
    1465           0 :                                 goto exit;
    1466             :                         }
    1467             : 
    1468           4 :                         length = spdk_min(remaining_user_sge_len, mapping_length);
    1469           4 :                         remaining_user_sge_len -= length;
    1470           4 :                         virt_addr = (uint8_t *)virt_addr + length;
    1471             : 
    1472           4 :                         if (!pqpair->flags.disable_pcie_sgl_merge && nseg > 0 &&
    1473           2 :                             phys_addr == (*(sgl - 1)).address + (*(sgl - 1)).unkeyed.length) {
    1474             :                                 /* extend previous entry */
    1475           0 :                                 (*(sgl - 1)).unkeyed.length += length;
    1476           0 :                                 continue;
    1477             :                         }
    1478             : 
    1479           4 :                         sgl->unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1480           4 :                         sgl->unkeyed.length = length;
    1481           4 :                         sgl->address = phys_addr;
    1482           4 :                         sgl->unkeyed.subtype = 0;
    1483             : 
    1484           4 :                         sgl++;
    1485           4 :                         nseg++;
    1486             :                 }
    1487             :         }
    1488             : 
    1489           2 :         if (nseg == 1) {
    1490             :                 /*
    1491             :                  * The whole transfer can be described by a single SGL descriptor.
    1492             :                  *  Use the special case described by the spec where SGL1's type is Data Block.
    1493             :                  *  This means the SGL in the tracker is not used at all, so copy the first (and only)
    1494             :                  *  SGL element into SGL1.
    1495             :                  */
    1496           1 :                 req->cmd.dptr.sgl1.unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1497           1 :                 req->cmd.dptr.sgl1.address = tr->u.sgl[0].address;
    1498           1 :                 req->cmd.dptr.sgl1.unkeyed.length = tr->u.sgl[0].unkeyed.length;
    1499             :         } else {
    1500             :                 /* SPDK NVMe driver supports only 1 SGL segment for now, it is enough because
    1501             :                  *  NVME_MAX_SGL_DESCRIPTORS * 16 is less than one page.
    1502             :                  */
    1503           1 :                 req->cmd.dptr.sgl1.unkeyed.type = SPDK_NVME_SGL_TYPE_LAST_SEGMENT;
    1504           1 :                 req->cmd.dptr.sgl1.address = tr->prp_sgl_bus_addr;
    1505           1 :                 req->cmd.dptr.sgl1.unkeyed.length = nseg * sizeof(struct spdk_nvme_sgl_descriptor);
    1506             :         }
    1507             : 
    1508           2 :         SPDK_DEBUGLOG(nvme, "Number of SGL descriptors: %" PRIu32 "\n", nseg);
    1509           2 :         return 0;
    1510             : 
    1511           0 : exit:
    1512           0 :         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1513           0 :         return -EFAULT;
    1514             : }
    1515             : 
    1516             : /**
    1517             :  * Build PRP list describing scattered payload buffer.
    1518             :  */
    1519             : static int
    1520           1 : nvme_pcie_qpair_build_prps_sgl_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req,
    1521             :                                        struct nvme_tracker *tr, bool dword_aligned)
    1522             : {
    1523             :         int rc;
    1524           1 :         void *virt_addr;
    1525           1 :         uint32_t remaining_transfer_len, length;
    1526           1 :         uint32_t prp_index = 0;
    1527           1 :         uint32_t page_size = qpair->ctrlr->page_size;
    1528             : 
    1529             :         /*
    1530             :          * Build scattered payloads.
    1531             :          */
    1532           1 :         assert(nvme_payload_type(&req->payload) == NVME_PAYLOAD_TYPE_SGL);
    1533           1 :         assert(req->payload.reset_sgl_fn != NULL);
    1534           1 :         req->payload.reset_sgl_fn(req->payload.contig_or_cb_arg, req->payload_offset);
    1535             : 
    1536           1 :         remaining_transfer_len = req->payload_size;
    1537           2 :         while (remaining_transfer_len > 0) {
    1538           1 :                 assert(req->payload.next_sge_fn != NULL);
    1539           1 :                 rc = req->payload.next_sge_fn(req->payload.contig_or_cb_arg, &virt_addr, &length);
    1540           1 :                 if (rc) {
    1541           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1542           0 :                         return -EFAULT;
    1543             :                 }
    1544             : 
    1545           1 :                 length = spdk_min(remaining_transfer_len, length);
    1546             : 
    1547             :                 /*
    1548             :                  * Any incompatible sges should have been handled up in the splitting routine,
    1549             :                  *  but assert here as an additional check.
    1550             :                  *
    1551             :                  * All SGEs except last must end on a page boundary.
    1552             :                  */
    1553           1 :                 assert((length == remaining_transfer_len) ||
    1554             :                        _is_page_aligned((uintptr_t)virt_addr + length, page_size));
    1555             : 
    1556           1 :                 rc = nvme_pcie_prp_list_append(qpair->ctrlr, tr, &prp_index, virt_addr, length, page_size);
    1557           1 :                 if (rc) {
    1558           0 :                         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1559           0 :                         return rc;
    1560             :                 }
    1561             : 
    1562           1 :                 remaining_transfer_len -= length;
    1563             :         }
    1564             : 
    1565           1 :         SPDK_DEBUGLOG(nvme, "Number of PRP entries: %" PRIu32 "\n", prp_index);
    1566           1 :         return 0;
    1567             : }
    1568             : 
    1569             : typedef int(*build_req_fn)(struct spdk_nvme_qpair *, struct nvme_request *, struct nvme_tracker *,
    1570             :                            bool);
    1571             : 
    1572             : static build_req_fn const g_nvme_pcie_build_req_table[][2] = {
    1573             :         [NVME_PAYLOAD_TYPE_INVALID] = {
    1574             :                 nvme_pcie_qpair_build_request_invalid,                  /* PRP */
    1575             :                 nvme_pcie_qpair_build_request_invalid                   /* SGL */
    1576             :         },
    1577             :         [NVME_PAYLOAD_TYPE_CONTIG] = {
    1578             :                 nvme_pcie_qpair_build_contig_request,                   /* PRP */
    1579             :                 nvme_pcie_qpair_build_contig_hw_sgl_request             /* SGL */
    1580             :         },
    1581             :         [NVME_PAYLOAD_TYPE_SGL] = {
    1582             :                 nvme_pcie_qpair_build_prps_sgl_request,                 /* PRP */
    1583             :                 nvme_pcie_qpair_build_hw_sgl_request                    /* SGL */
    1584             :         }
    1585             : };
    1586             : 
    1587             : static int
    1588           5 : nvme_pcie_qpair_build_metadata(struct spdk_nvme_qpair *qpair, struct nvme_tracker *tr,
    1589             :                                bool sgl_supported, bool mptr_sgl_supported, bool dword_aligned)
    1590             : {
    1591             :         void *md_payload;
    1592           5 :         struct nvme_request *req = tr->req;
    1593           5 :         uint64_t mapping_length;
    1594             : 
    1595           5 :         if (req->payload.md) {
    1596           5 :                 md_payload = (uint8_t *)req->payload.md + req->md_offset;
    1597           5 :                 if (dword_aligned && ((uintptr_t)md_payload & 3)) {
    1598           0 :                         SPDK_ERRLOG("virt_addr %p not dword aligned\n", md_payload);
    1599           0 :                         goto exit;
    1600             :                 }
    1601             : 
    1602           5 :                 mapping_length = req->md_size;
    1603           5 :                 if (sgl_supported && mptr_sgl_supported && dword_aligned) {
    1604           2 :                         assert(req->cmd.psdt == SPDK_NVME_PSDT_SGL_MPTR_CONTIG);
    1605           2 :                         req->cmd.psdt = SPDK_NVME_PSDT_SGL_MPTR_SGL;
    1606             : 
    1607           2 :                         tr->meta_sgl.address = nvme_pcie_vtophys(qpair->ctrlr, md_payload, &mapping_length);
    1608           2 :                         if (tr->meta_sgl.address == SPDK_VTOPHYS_ERROR || mapping_length != req->md_size) {
    1609           1 :                                 goto exit;
    1610             :                         }
    1611           1 :                         tr->meta_sgl.unkeyed.type = SPDK_NVME_SGL_TYPE_DATA_BLOCK;
    1612           1 :                         tr->meta_sgl.unkeyed.length = req->md_size;
    1613           1 :                         tr->meta_sgl.unkeyed.subtype = 0;
    1614           1 :                         req->cmd.mptr = tr->prp_sgl_bus_addr - sizeof(struct spdk_nvme_sgl_descriptor);
    1615             :                 } else {
    1616           3 :                         req->cmd.mptr = nvme_pcie_vtophys(qpair->ctrlr, md_payload, &mapping_length);
    1617           3 :                         if (req->cmd.mptr == SPDK_VTOPHYS_ERROR || mapping_length != req->md_size) {
    1618           1 :                                 goto exit;
    1619             :                         }
    1620             :                 }
    1621             :         }
    1622             : 
    1623           3 :         return 0;
    1624             : 
    1625           2 : exit:
    1626           2 :         nvme_pcie_fail_request_bad_vtophys(qpair, tr);
    1627           2 :         return -EINVAL;
    1628             : }
    1629             : 
    1630             : int
    1631           0 : nvme_pcie_qpair_submit_request(struct spdk_nvme_qpair *qpair, struct nvme_request *req)
    1632             : {
    1633             :         struct nvme_tracker     *tr;
    1634           0 :         int                     rc = 0;
    1635           0 :         struct spdk_nvme_ctrlr  *ctrlr = qpair->ctrlr;
    1636           0 :         struct nvme_pcie_qpair  *pqpair = nvme_pcie_qpair(qpair);
    1637             :         enum nvme_payload_type  payload_type;
    1638             :         bool                    sgl_supported;
    1639             :         bool                    mptr_sgl_supported;
    1640           0 :         bool                    dword_aligned = true;
    1641             : 
    1642           0 :         if (spdk_unlikely(nvme_qpair_is_admin_queue(qpair))) {
    1643           0 :                 nvme_ctrlr_lock(ctrlr);
    1644             :         }
    1645             : 
    1646           0 :         tr = TAILQ_FIRST(&pqpair->free_tr);
    1647             : 
    1648           0 :         if (tr == NULL) {
    1649           0 :                 pqpair->stat->queued_requests++;
    1650             :                 /* Inform the upper layer to try again later. */
    1651           0 :                 rc = -EAGAIN;
    1652           0 :                 goto exit;
    1653             :         }
    1654             : 
    1655           0 :         pqpair->stat->submitted_requests++;
    1656           0 :         TAILQ_REMOVE(&pqpair->free_tr, tr, tq_list); /* remove tr from free_tr */
    1657           0 :         TAILQ_INSERT_TAIL(&pqpair->outstanding_tr, tr, tq_list);
    1658           0 :         pqpair->qpair.queue_depth++;
    1659           0 :         tr->req = req;
    1660           0 :         tr->cb_fn = req->cb_fn;
    1661           0 :         tr->cb_arg = req->cb_arg;
    1662           0 :         req->cmd.cid = tr->cid;
    1663             :         /* Use PRP by default. This bit will be overridden below if needed. */
    1664           0 :         req->cmd.psdt = SPDK_NVME_PSDT_PRP;
    1665             : 
    1666           0 :         if (req->payload_size != 0) {
    1667           0 :                 payload_type = nvme_payload_type(&req->payload);
    1668             :                 /* According to the specification, PRPs shall be used for all
    1669             :                  *  Admin commands for NVMe over PCIe implementations.
    1670             :                  */
    1671           0 :                 sgl_supported = (ctrlr->flags & SPDK_NVME_CTRLR_SGL_SUPPORTED) != 0 &&
    1672           0 :                                 !nvme_qpair_is_admin_queue(qpair);
    1673           0 :                 mptr_sgl_supported = (ctrlr->flags & SPDK_NVME_CTRLR_MPTR_SGL_SUPPORTED) != 0 &&
    1674           0 :                                      !nvme_qpair_is_admin_queue(qpair);
    1675             : 
    1676           0 :                 if (sgl_supported) {
    1677             :                         /* Don't use SGL for DSM command */
    1678           0 :                         if (spdk_unlikely((ctrlr->quirks & NVME_QUIRK_NO_SGL_FOR_DSM) &&
    1679             :                                           (req->cmd.opc == SPDK_NVME_OPC_DATASET_MANAGEMENT))) {
    1680           0 :                                 sgl_supported = false;
    1681             :                         }
    1682             :                 }
    1683             : 
    1684           0 :                 if (sgl_supported && !(ctrlr->flags & SPDK_NVME_CTRLR_SGL_REQUIRES_DWORD_ALIGNMENT)) {
    1685           0 :                         dword_aligned = false;
    1686             :                 }
    1687             : 
    1688             :                 /* If we fail to build the request or the metadata, do not return the -EFAULT back up
    1689             :                  * the stack.  This ensures that we always fail these types of requests via a
    1690             :                  * completion callback, and never in the context of the submission.
    1691             :                  */
    1692           0 :                 rc = g_nvme_pcie_build_req_table[payload_type][sgl_supported](qpair, req, tr, dword_aligned);
    1693           0 :                 if (rc < 0) {
    1694           0 :                         assert(rc == -EFAULT);
    1695           0 :                         rc = 0;
    1696           0 :                         goto exit;
    1697             :                 }
    1698             : 
    1699           0 :                 rc = nvme_pcie_qpair_build_metadata(qpair, tr, sgl_supported, mptr_sgl_supported, dword_aligned);
    1700           0 :                 if (rc < 0) {
    1701           0 :                         assert(rc == -EFAULT);
    1702           0 :                         rc = 0;
    1703           0 :                         goto exit;
    1704             :                 }
    1705             :         }
    1706             : 
    1707           0 :         nvme_pcie_qpair_submit_tracker(qpair, tr);
    1708             : 
    1709           0 : exit:
    1710           0 :         if (spdk_unlikely(nvme_qpair_is_admin_queue(qpair))) {
    1711           0 :                 nvme_ctrlr_unlock(ctrlr);
    1712             :         }
    1713             : 
    1714           0 :         return rc;
    1715             : }
    1716             : 
    1717             : struct spdk_nvme_transport_poll_group *
    1718           1 : nvme_pcie_poll_group_create(void)
    1719             : {
    1720           1 :         struct nvme_pcie_poll_group *group = calloc(1, sizeof(*group));
    1721             : 
    1722           1 :         if (group == NULL) {
    1723           0 :                 SPDK_ERRLOG("Unable to allocate poll group.\n");
    1724           0 :                 return NULL;
    1725             :         }
    1726             : 
    1727           1 :         return &group->group;
    1728             : }
    1729             : 
    1730             : int
    1731           0 : nvme_pcie_poll_group_connect_qpair(struct spdk_nvme_qpair *qpair)
    1732             : {
    1733           0 :         return 0;
    1734             : }
    1735             : 
    1736             : int
    1737           0 : nvme_pcie_poll_group_disconnect_qpair(struct spdk_nvme_qpair *qpair)
    1738             : {
    1739           0 :         return 0;
    1740             : }
    1741             : 
    1742             : int
    1743           0 : nvme_pcie_poll_group_add(struct spdk_nvme_transport_poll_group *tgroup,
    1744             :                          struct spdk_nvme_qpair *qpair)
    1745             : {
    1746           0 :         return 0;
    1747             : }
    1748             : 
    1749             : int
    1750           0 : nvme_pcie_poll_group_remove(struct spdk_nvme_transport_poll_group *tgroup,
    1751             :                             struct spdk_nvme_qpair *qpair)
    1752             : {
    1753           0 :         struct nvme_pcie_qpair *pqpair = nvme_pcie_qpair(qpair);
    1754             : 
    1755           0 :         pqpair->stat = &g_dummy_stat;
    1756           0 :         return 0;
    1757             : }
    1758             : 
    1759             : int64_t
    1760           0 : nvme_pcie_poll_group_process_completions(struct spdk_nvme_transport_poll_group *tgroup,
    1761             :                 uint32_t completions_per_qpair, spdk_nvme_disconnected_qpair_cb disconnected_qpair_cb)
    1762             : {
    1763             :         struct spdk_nvme_qpair *qpair, *tmp_qpair;
    1764           0 :         int32_t local_completions = 0;
    1765           0 :         int64_t total_completions = 0;
    1766             : 
    1767           0 :         STAILQ_FOREACH_SAFE(qpair, &tgroup->disconnected_qpairs, poll_group_stailq, tmp_qpair) {
    1768           0 :                 disconnected_qpair_cb(qpair, tgroup->group->ctx);
    1769             :         }
    1770             : 
    1771           0 :         STAILQ_FOREACH_SAFE(qpair, &tgroup->connected_qpairs, poll_group_stailq, tmp_qpair) {
    1772           0 :                 local_completions = spdk_nvme_qpair_process_completions(qpair, completions_per_qpair);
    1773           0 :                 if (spdk_unlikely(local_completions < 0)) {
    1774           0 :                         disconnected_qpair_cb(qpair, tgroup->group->ctx);
    1775           0 :                         total_completions = -ENXIO;
    1776           0 :                 } else if (spdk_likely(total_completions >= 0)) {
    1777           0 :                         total_completions += local_completions;
    1778             :                 }
    1779             :         }
    1780             : 
    1781           0 :         return total_completions;
    1782             : }
    1783             : 
    1784             : int
    1785           1 : nvme_pcie_poll_group_destroy(struct spdk_nvme_transport_poll_group *tgroup)
    1786             : {
    1787           1 :         if (!STAILQ_EMPTY(&tgroup->connected_qpairs) || !STAILQ_EMPTY(&tgroup->disconnected_qpairs)) {
    1788           0 :                 return -EBUSY;
    1789             :         }
    1790             : 
    1791           1 :         free(tgroup);
    1792             : 
    1793           1 :         return 0;
    1794             : }
    1795             : 
    1796             : int
    1797           3 : nvme_pcie_poll_group_get_stats(struct spdk_nvme_transport_poll_group *tgroup,
    1798             :                                struct spdk_nvme_transport_poll_group_stat **_stats)
    1799             : {
    1800             :         struct nvme_pcie_poll_group *group;
    1801             :         struct spdk_nvme_transport_poll_group_stat *stats;
    1802             : 
    1803           3 :         if (tgroup == NULL || _stats == NULL) {
    1804           2 :                 SPDK_ERRLOG("Invalid stats or group pointer\n");
    1805           2 :                 return -EINVAL;
    1806             :         }
    1807             : 
    1808           1 :         stats = calloc(1, sizeof(*stats));
    1809           1 :         if (!stats) {
    1810           0 :                 SPDK_ERRLOG("Can't allocate memory for stats\n");
    1811           0 :                 return -ENOMEM;
    1812             :         }
    1813           1 :         stats->trtype = SPDK_NVME_TRANSPORT_PCIE;
    1814           1 :         group = SPDK_CONTAINEROF(tgroup, struct nvme_pcie_poll_group, group);
    1815           1 :         memcpy(&stats->pcie, &group->stats, sizeof(group->stats));
    1816             : 
    1817           1 :         *_stats = stats;
    1818             : 
    1819           1 :         return 0;
    1820             : }
    1821             : 
    1822             : void
    1823           1 : nvme_pcie_poll_group_free_stats(struct spdk_nvme_transport_poll_group *tgroup,
    1824             :                                 struct spdk_nvme_transport_poll_group_stat *stats)
    1825             : {
    1826           1 :         free(stats);
    1827           1 : }
    1828             : 
    1829           2 : SPDK_TRACE_REGISTER_FN(nvme_pcie, "nvme_pcie", TRACE_GROUP_NVME_PCIE)
    1830             : {
    1831           0 :         struct spdk_trace_tpoint_opts opts[] = {
    1832             :                 {
    1833             :                         "NVME_PCIE_SUBMIT", TRACE_NVME_PCIE_SUBMIT,
    1834             :                         OWNER_TYPE_NVME_PCIE_QP, OBJECT_NVME_PCIE_REQ, 1,
    1835             :                         {       { "ctx", SPDK_TRACE_ARG_TYPE_PTR, 8 },
    1836             :                                 { "cid", SPDK_TRACE_ARG_TYPE_INT, 4 },
    1837             :                                 { "opc", SPDK_TRACE_ARG_TYPE_INT, 4 },
    1838             :                                 { "dw10", SPDK_TRACE_ARG_TYPE_PTR, 4 },
    1839             :                                 { "dw11", SPDK_TRACE_ARG_TYPE_PTR, 4 },
    1840             :                                 { "dw12", SPDK_TRACE_ARG_TYPE_PTR, 4 },
    1841             :                                 { "qd", SPDK_TRACE_ARG_TYPE_INT, 4 }
    1842             :                         }
    1843             :                 },
    1844             :                 {
    1845             :                         "NVME_PCIE_COMPLETE", TRACE_NVME_PCIE_COMPLETE,
    1846             :                         OWNER_TYPE_NVME_PCIE_QP, OBJECT_NVME_PCIE_REQ, 0,
    1847             :                         {       { "ctx", SPDK_TRACE_ARG_TYPE_PTR, 8 },
    1848             :                                 { "cid", SPDK_TRACE_ARG_TYPE_INT, 4 },
    1849             :                                 { "cpl", SPDK_TRACE_ARG_TYPE_PTR, 4 },
    1850             :                                 { "qd", SPDK_TRACE_ARG_TYPE_INT, 4 }
    1851             :                         }
    1852             :                 },
    1853             :         };
    1854             : 
    1855           0 :         spdk_trace_register_object(OBJECT_NVME_PCIE_REQ, 'p');
    1856           0 :         spdk_trace_register_owner_type(OWNER_TYPE_NVME_PCIE_QP, 'q');
    1857           0 :         spdk_trace_register_description_ext(opts, SPDK_COUNTOF(opts));
    1858           0 : }

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