drivers/scsi/qla2xxx/qla_nvme.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * QLogic Fibre Channel HBA Driver
   4  * Copyright (c)  2003-2017 QLogic Corporation
   5  */
   6 #include "qla_nvme.h"
   7 #include <linux/scatterlist.h>
   8 #include <linux/delay.h>
   9 #include <linux/nvme.h>
  10 #include <linux/nvme-fc.h>
  11
  12 static struct nvme_fc_port_template qla_nvme_fc_transport;
  13
  14 int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
  15 {
  16         struct qla_nvme_rport *rport;
  17         struct nvme_fc_port_info req;
  18         int ret;
  19
  20         if (!IS_ENABLED(CONFIG_NVME_FC))
  21                 return 0;
  22
  23         if (!vha->flags.nvme_enabled) {
  24                 ql_log(ql_log_info, vha, 0x2100,
  25                     "%s: Not registering target since Host NVME is not enabled\n",
  26                     __func__);
  27                 return 0;
  28         }
  29
  30         if (!vha->nvme_local_port && qla_nvme_register_hba(vha))
  31                 return 0;
  32
  33         if (!(fcport->nvme_prli_service_param &
  34             (NVME_PRLI_SP_TARGET | NVME_PRLI_SP_DISCOVERY)) ||
  35                 (fcport->nvme_flag & NVME_FLAG_REGISTERED))
  36                 return 0;
  37
  38         fcport->nvme_flag &= ~NVME_FLAG_RESETTING;
  39
  40         memset(&req, 0, sizeof(struct nvme_fc_port_info));
  41         req.port_name = wwn_to_u64(fcport->port_name);
  42         req.node_name = wwn_to_u64(fcport->node_name);
  43         req.port_role = 0;
  44         req.dev_loss_tmo = 0;
  45
  46         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR)
  47                 req.port_role = FC_PORT_ROLE_NVME_INITIATOR;
  48
  49         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_TARGET)
  50                 req.port_role |= FC_PORT_ROLE_NVME_TARGET;
  51
  52         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_DISCOVERY)
  53                 req.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
  54
  55         req.port_id = fcport->d_id.b24;
  56
  57         ql_log(ql_log_info, vha, 0x2102,
  58             "%s: traddr=nn-0x%016llx:pn-0x%016llx PortID:%06x\n",
  59             __func__, req.node_name, req.port_name,
  60             req.port_id);
  61
  62         ret = nvme_fc_register_remoteport(vha->nvme_local_port, &req,
  63             &fcport->nvme_remote_port);
  64         if (ret) {
  65                 ql_log(ql_log_warn, vha, 0x212e,
  66                     "Failed to register remote port. Transport returned %d\n",
  67                     ret);
  68                 return ret;
  69         }
  70
  71         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_SLER)
  72                 ql_log(ql_log_info, vha, 0x212a,
  73                        "PortID:%06x Supports SLER\n", req.port_id);
  74
  75         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_PI_CTRL)
  76                 ql_log(ql_log_info, vha, 0x212b,
  77                        "PortID:%06x Supports PI control\n", req.port_id);
  78
  79         rport = fcport->nvme_remote_port->private;
  80         rport->fcport = fcport;
  81
  82         fcport->nvme_flag |= NVME_FLAG_REGISTERED;
  83         return 0;
  84 }
  85
  86 /* Allocate a queue for NVMe traffic */
  87 static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport,
  88     unsigned int qidx, u16 qsize, void **handle)
  89 {
  90         struct scsi_qla_host *vha;
  91         struct qla_hw_data *ha;
  92         struct qla_qpair *qpair;
  93
  94         if (!qidx)
  95                 qidx++;
  96
  97         vha = (struct scsi_qla_host *)lport->private;
  98         ha = vha->hw;
  99
 100         ql_log(ql_log_info, vha, 0x2104,
 101             "%s: handle %p, idx =%d, qsize %d\n",
 102             __func__, handle, qidx, qsize);
 103
 104         if (qidx > qla_nvme_fc_transport.max_hw_queues) {
 105                 ql_log(ql_log_warn, vha, 0x212f,
 106                     "%s: Illegal qidx=%d. Max=%d\n",
 107                     __func__, qidx, qla_nvme_fc_transport.max_hw_queues);
 108                 return -EINVAL;
 109         }
 110
 111         if (ha->queue_pair_map[qidx]) {
 112                 *handle = ha->queue_pair_map[qidx];
 113                 ql_log(ql_log_info, vha, 0x2121,
 114                     "Returning existing qpair of %p for idx=%x\n",
 115                     *handle, qidx);
 116                 return 0;
 117         }
 118
 119         qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
 120         if (qpair == NULL) {
 121                 ql_log(ql_log_warn, vha, 0x2122,
 122                     "Failed to allocate qpair\n");
 123                 return -EINVAL;
 124         }
 125         *handle = qpair;
 126
 127         return 0;
 128 }
 129
 130 static void qla_nvme_release_fcp_cmd_kref(struct kref *kref)
 131 {
 132         struct srb *sp = container_of(kref, struct srb, cmd_kref);
 133         struct nvme_private *priv = (struct nvme_private *)sp->priv;
 134         struct nvmefc_fcp_req *fd;
 135         struct srb_iocb *nvme;
 136         unsigned long flags;
 137
 138         if (!priv)
 139                 goto out;
 140
 141         nvme = &sp->u.iocb_cmd;
 142         fd = nvme->u.nvme.desc;
 143
 144         spin_lock_irqsave(&priv->cmd_lock, flags);
 145         priv->sp = NULL;
 146         sp->priv = NULL;
 147         if (priv->comp_status == QLA_SUCCESS) {
 148                 fd->rcv_rsplen = le16_to_cpu(nvme->u.nvme.rsp_pyld_len);
 149                 fd->status = NVME_SC_SUCCESS;
 150         } else {
 151                 fd->rcv_rsplen = 0;
 152                 fd->transferred_length = 0;
 153                 fd->status = NVME_SC_INTERNAL;
 154         }
 155         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 156
 157         fd->done(fd);
 158 out:
 159         qla2xxx_rel_qpair_sp(sp->qpair, sp);
 160 }
 161
 162 static void qla_nvme_release_ls_cmd_kref(struct kref *kref)
 163 {
 164         struct srb *sp = container_of(kref, struct srb, cmd_kref);
 165         struct nvme_private *priv = (struct nvme_private *)sp->priv;
 166         struct nvmefc_ls_req *fd;
 167         unsigned long flags;
 168
 169         if (!priv)
 170                 goto out;
 171
 172         spin_lock_irqsave(&priv->cmd_lock, flags);
 173         priv->sp = NULL;
 174         sp->priv = NULL;
 175         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 176
 177         fd = priv->fd;
 178         fd->done(fd, priv->comp_status);
 179 out:
 180         qla2x00_rel_sp(sp);
 181 }
 182
 183 static void qla_nvme_ls_complete(struct work_struct *work)
 184 {
 185         struct nvme_private *priv =
 186                 container_of(work, struct nvme_private, ls_work);
 187
 188         kref_put(&priv->sp->cmd_kref, qla_nvme_release_ls_cmd_kref);
 189 }
 190
 191 static void qla_nvme_sp_ls_done(srb_t *sp, int res)
 192 {
 193         struct nvme_private *priv = sp->priv;
 194
 195         if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0))
 196                 return;
 197
 198         if (res)
 199                 res = -EINVAL;
 200
 201         priv->comp_status = res;
 202         INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
 203         schedule_work(&priv->ls_work);
 204 }
 205
 206 /* it assumed that QPair lock is held. */
 207 static void qla_nvme_sp_done(srb_t *sp, int res)
 208 {
 209         struct nvme_private *priv = sp->priv;
 210
 211         priv->comp_status = res;
 212         kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref);
 213
 214         return;
 215 }
 216
 217 static void qla_nvme_abort_work(struct work_struct *work)
 218 {
 219         struct nvme_private *priv =
 220                 container_of(work, struct nvme_private, abort_work);
 221         srb_t *sp = priv->sp;
 222         fc_port_t *fcport = sp->fcport;
 223         struct qla_hw_data *ha = fcport->vha->hw;
 224         int rval;
 225
 226         ql_dbg(ql_dbg_io, fcport->vha, 0xffff,
 227                "%s called for sp=%p, hndl=%x on fcport=%p deleted=%d\n",
 228                __func__, sp, sp->handle, fcport, fcport->deleted);
 229
 230         if (!ha->flags.fw_started && fcport->deleted)
 231                 goto out;
 232
 233         if (ha->flags.host_shutting_down) {
 234                 ql_log(ql_log_info, sp->fcport->vha, 0xffff,
 235                     "%s Calling done on sp: %p, type: 0x%x\n",
 236                     __func__, sp, sp->type);
 237                 sp->done(sp, 0);
 238                 goto out;
 239         }
 240
 241         rval = ha->isp_ops->abort_command(sp);
 242
 243         ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
 244             "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
 245             __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
 246             sp, sp->handle, fcport, rval);
 247
 248 out:
 249         /* kref_get was done before work was schedule. */
 250         kref_put(&sp->cmd_kref, sp->put_fn);
 251 }
 252
 253 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
 254     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 255 {
 256         struct nvme_private *priv = fd->private;
 257         unsigned long flags;
 258
 259         spin_lock_irqsave(&priv->cmd_lock, flags);
 260         if (!priv->sp) {
 261                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 262                 return;
 263         }
 264
 265         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 266                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 267                 return;
 268         }
 269         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 270
 271         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 272         schedule_work(&priv->abort_work);
 273 }
 274
 275 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
 276     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 277 {
 278         struct qla_nvme_rport *qla_rport = rport->private;
 279         fc_port_t *fcport = qla_rport->fcport;
 280         struct srb_iocb   *nvme;
 281         struct nvme_private *priv = fd->private;
 282         struct scsi_qla_host *vha;
 283         int     rval = QLA_FUNCTION_FAILED;
 284         struct qla_hw_data *ha;
 285         srb_t           *sp;
 286
 287
 288         if (!fcport || (fcport && fcport->deleted))
 289                 return rval;
 290
 291         vha = fcport->vha;
 292         ha = vha->hw;
 293
 294         if (!ha->flags.fw_started)
 295                 return rval;
 296
 297         /* Alloc SRB structure */
 298         sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
 299         if (!sp)
 300                 return rval;
 301
 302         sp->type = SRB_NVME_LS;
 303         sp->name = "nvme_ls";
 304         sp->done = qla_nvme_sp_ls_done;
 305         sp->put_fn = qla_nvme_release_ls_cmd_kref;
 306         sp->priv = priv;
 307         priv->sp = sp;
 308         kref_init(&sp->cmd_kref);
 309         spin_lock_init(&priv->cmd_lock);
 310         nvme = &sp->u.iocb_cmd;
 311         priv->fd = fd;
 312         nvme->u.nvme.desc = fd;
 313         nvme->u.nvme.dir = 0;
 314         nvme->u.nvme.dl = 0;
 315         nvme->u.nvme.cmd_len = fd->rqstlen;
 316         nvme->u.nvme.rsp_len = fd->rsplen;
 317         nvme->u.nvme.rsp_dma = fd->rspdma;
 318         nvme->u.nvme.timeout_sec = fd->timeout;
 319         nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
 320             fd->rqstlen, DMA_TO_DEVICE);
 321         dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
 322             fd->rqstlen, DMA_TO_DEVICE);
 323
 324         rval = qla2x00_start_sp(sp);
 325         if (rval != QLA_SUCCESS) {
 326                 ql_log(ql_log_warn, vha, 0x700e,
 327                     "qla2x00_start_sp failed = %d\n", rval);
 328                 wake_up(&sp->nvme_ls_waitq);
 329                 sp->priv = NULL;
 330                 priv->sp = NULL;
 331                 qla2x00_rel_sp(sp);
 332                 return rval;
 333         }
 334
 335         return rval;
 336 }
 337
 338 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
 339     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 340     struct nvmefc_fcp_req *fd)
 341 {
 342         struct nvme_private *priv = fd->private;
 343         unsigned long flags;
 344
 345         spin_lock_irqsave(&priv->cmd_lock, flags);
 346         if (!priv->sp) {
 347                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 348                 return;
 349         }
 350         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 351                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 352                 return;
 353         }
 354         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 355
 356         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 357         schedule_work(&priv->abort_work);
 358 }
 359
 360 static inline int qla2x00_start_nvme_mq(srb_t *sp)
 361 {
 362         unsigned long   flags;
 363         uint32_t        *clr_ptr;
 364         uint32_t        handle;
 365         struct cmd_nvme *cmd_pkt;
 366         uint16_t        cnt, i;
 367         uint16_t        req_cnt;
 368         uint16_t        tot_dsds;
 369         uint16_t        avail_dsds;
 370         struct dsd64    *cur_dsd;
 371         struct req_que *req = NULL;
 372         struct scsi_qla_host *vha = sp->fcport->vha;
 373         struct qla_hw_data *ha = vha->hw;
 374         struct qla_qpair *qpair = sp->qpair;
 375         struct srb_iocb *nvme = &sp->u.iocb_cmd;
 376         struct scatterlist *sgl, *sg;
 377         struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
 378         struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
 379         uint32_t        rval = QLA_SUCCESS;
 380
 381         /* Setup qpair pointers */
 382         req = qpair->req;
 383         tot_dsds = fd->sg_cnt;
 384
 385         /* Acquire qpair specific lock */
 386         spin_lock_irqsave(&qpair->qp_lock, flags);
 387
 388         handle = qla2xxx_get_next_handle(req);
 389         if (handle == 0) {
 390                 rval = -EBUSY;
 391                 goto queuing_error;
 392         }
 393         req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
 394         if (req->cnt < (req_cnt + 2)) {
 395                 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
 396                     rd_reg_dword_relaxed(req->req_q_out);
 397
 398                 if (req->ring_index < cnt)
 399                         req->cnt = cnt - req->ring_index;
 400                 else
 401                         req->cnt = req->length - (req->ring_index - cnt);
 402
 403                 if (req->cnt < (req_cnt + 2)){
 404                         rval = -EBUSY;
 405                         goto queuing_error;
 406                 }
 407         }
 408
 409         if (unlikely(!fd->sqid)) {
 410                 if (cmd->sqe.common.opcode == nvme_admin_async_event) {
 411                         nvme->u.nvme.aen_op = 1;
 412                         atomic_inc(&ha->nvme_active_aen_cnt);
 413                 }
 414         }
 415
 416         /* Build command packet. */
 417         req->current_outstanding_cmd = handle;
 418         req->outstanding_cmds[handle] = sp;
 419         sp->handle = handle;
 420         req->cnt -= req_cnt;
 421
 422         cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
 423         cmd_pkt->handle = make_handle(req->id, handle);
 424
 425         /* Zero out remaining portion of packet. */
 426         clr_ptr = (uint32_t *)cmd_pkt + 2;
 427         memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
 428
 429         cmd_pkt->entry_status = 0;
 430
 431         /* Update entry type to indicate Command NVME IOCB */
 432         cmd_pkt->entry_type = COMMAND_NVME;
 433
 434         /* No data transfer how do we check buffer len == 0?? */
 435         if (fd->io_dir == NVMEFC_FCP_READ) {
 436                 cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
 437                 qpair->counters.input_bytes += fd->payload_length;
 438                 qpair->counters.input_requests++;
 439         } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
 440                 cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
 441                 if ((vha->flags.nvme_first_burst) &&
 442                     (sp->fcport->nvme_prli_service_param &
 443                         NVME_PRLI_SP_FIRST_BURST)) {
 444                         if ((fd->payload_length <=
 445                             sp->fcport->nvme_first_burst_size) ||
 446                                 (sp->fcport->nvme_first_burst_size == 0))
 447                                 cmd_pkt->control_flags |=
 448                                         cpu_to_le16(CF_NVME_FIRST_BURST_ENABLE);
 449                 }
 450                 qpair->counters.output_bytes += fd->payload_length;
 451                 qpair->counters.output_requests++;
 452         } else if (fd->io_dir == 0) {
 453                 cmd_pkt->control_flags = 0;
 454         }
 455         /* Set BIT_13 of control flags for Async event */
 456         if (vha->flags.nvme2_enabled &&
 457             cmd->sqe.common.opcode == nvme_admin_async_event) {
 458                 cmd_pkt->control_flags |= cpu_to_le16(CF_ADMIN_ASYNC_EVENT);
 459         }
 460
 461         /* Set NPORT-ID */
 462         cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
 463         cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
 464         cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
 465         cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
 466         cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
 467
 468         /* NVME RSP IU */
 469         cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
 470         put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address);
 471
 472         /* NVME CNMD IU */
 473         cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
 474         cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(fd->cmddma);
 475
 476         cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
 477         cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
 478
 479         /* One DSD is available in the Command Type NVME IOCB */
 480         avail_dsds = 1;
 481         cur_dsd = &cmd_pkt->nvme_dsd;
 482         sgl = fd->first_sgl;
 483
 484         /* Load data segments */
 485         for_each_sg(sgl, sg, tot_dsds, i) {
 486                 cont_a64_entry_t *cont_pkt;
 487
 488                 /* Allocate additional continuation packets? */
 489                 if (avail_dsds == 0) {
 490                         /*
 491                          * Five DSDs are available in the Continuation
 492                          * Type 1 IOCB.
 493                          */
 494
 495                         /* Adjust ring index */
 496                         req->ring_index++;
 497                         if (req->ring_index == req->length) {
 498                                 req->ring_index = 0;
 499                                 req->ring_ptr = req->ring;
 500                         } else {
 501                                 req->ring_ptr++;
 502                         }
 503                         cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
 504                         put_unaligned_le32(CONTINUE_A64_TYPE,
 505                                            &cont_pkt->entry_type);
 506
 507                         cur_dsd = cont_pkt->dsd;
 508                         avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
 509                 }
 510
 511                 append_dsd64(&cur_dsd, sg);
 512                 avail_dsds--;
 513         }
 514
 515         /* Set total entry count. */
 516         cmd_pkt->entry_count = (uint8_t)req_cnt;
 517         wmb();
 518
 519         /* Adjust ring index. */
 520         req->ring_index++;
 521         if (req->ring_index == req->length) {
 522                 req->ring_index = 0;
 523                 req->ring_ptr = req->ring;
 524         } else {
 525                 req->ring_ptr++;
 526         }
 527
 528         /* Set chip new ring index. */
 529         wrt_reg_dword(req->req_q_in, req->ring_index);
 530
 531 queuing_error:
 532         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 533         return rval;
 534 }
 535
 536 /* Post a command */
 537 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
 538     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 539     struct nvmefc_fcp_req *fd)
 540 {
 541         fc_port_t *fcport;
 542         struct srb_iocb *nvme;
 543         struct scsi_qla_host *vha;
 544         int rval;
 545         srb_t *sp;
 546         struct qla_qpair *qpair = hw_queue_handle;
 547         struct nvme_private *priv = fd->private;
 548         struct qla_nvme_rport *qla_rport = rport->private;
 549
 550         if (!priv) {
 551                 /* nvme association has been torn down */
 552                 return -ENODEV;
 553         }
 554
 555         fcport = qla_rport->fcport;
 556
 557         if (!qpair || !fcport || (qpair && !qpair->fw_started) ||
 558             (fcport && fcport->deleted))
 559                 return -ENODEV;
 560
 561         vha = fcport->vha;
 562
 563         if (!(fcport->nvme_flag & NVME_FLAG_REGISTERED))
 564                 return -ENODEV;
 565
 566         if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags) ||
 567             (qpair && !qpair->fw_started) || fcport->deleted)
 568                 return -EBUSY;
 569
 570         /*
 571          * If we know the dev is going away while the transport is still sending
 572          * IO's return busy back to stall the IO Q.  This happens when the
 573          * link goes away and fw hasn't notified us yet, but IO's are being
 574          * returned. If the dev comes back quickly we won't exhaust the IO
 575          * retry count at the core.
 576          */
 577         if (fcport->nvme_flag & NVME_FLAG_RESETTING)
 578                 return -EBUSY;
 579
 580         /* Alloc SRB structure */
 581         sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
 582         if (!sp)
 583                 return -EBUSY;
 584
 585         init_waitqueue_head(&sp->nvme_ls_waitq);
 586         kref_init(&sp->cmd_kref);
 587         spin_lock_init(&priv->cmd_lock);
 588         sp->priv = priv;
 589         priv->sp = sp;
 590         sp->type = SRB_NVME_CMD;
 591         sp->name = "nvme_cmd";
 592         sp->done = qla_nvme_sp_done;
 593         sp->put_fn = qla_nvme_release_fcp_cmd_kref;
 594         sp->qpair = qpair;
 595         sp->vha = vha;
 596         nvme = &sp->u.iocb_cmd;
 597         nvme->u.nvme.desc = fd;
 598
 599         rval = qla2x00_start_nvme_mq(sp);
 600         if (rval != QLA_SUCCESS) {
 601                 ql_log(ql_log_warn, vha, 0x212d,
 602                     "qla2x00_start_nvme_mq failed = %d\n", rval);
 603                 wake_up(&sp->nvme_ls_waitq);
 604                 sp->priv = NULL;
 605                 priv->sp = NULL;
 606                 qla2xxx_rel_qpair_sp(sp->qpair, sp);
 607         }
 608
 609         return rval;
 610 }
 611
 612 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
 613 {
 614         struct scsi_qla_host *vha = lport->private;
 615
 616         ql_log(ql_log_info, vha, 0x210f,
 617             "localport delete of %p completed.\n", vha->nvme_local_port);
 618         vha->nvme_local_port = NULL;
 619         complete(&vha->nvme_del_done);
 620 }
 621
 622 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
 623 {
 624         fc_port_t *fcport;
 625         struct qla_nvme_rport *qla_rport = rport->private;
 626
 627         fcport = qla_rport->fcport;
 628         fcport->nvme_remote_port = NULL;
 629         fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
 630         fcport->nvme_flag &= ~NVME_FLAG_DELETING;
 631         ql_log(ql_log_info, fcport->vha, 0x2110,
 632             "remoteport_delete of %p %8phN completed.\n",
 633             fcport, fcport->port_name);
 634         complete(&fcport->nvme_del_done);
 635 }
 636
 637 static struct nvme_fc_port_template qla_nvme_fc_transport = {
 638         .localport_delete = qla_nvme_localport_delete,
 639         .remoteport_delete = qla_nvme_remoteport_delete,
 640         .create_queue   = qla_nvme_alloc_queue,
 641         .delete_queue   = NULL,
 642         .ls_req         = qla_nvme_ls_req,
 643         .ls_abort       = qla_nvme_ls_abort,
 644         .fcp_io         = qla_nvme_post_cmd,
 645         .fcp_abort      = qla_nvme_fcp_abort,
 646         .max_hw_queues  = 8,
 647         .max_sgl_segments = 1024,
 648         .max_dif_sgl_segments = 64,
 649         .dma_boundary = 0xFFFFFFFF,
 650         .local_priv_sz  = 8,
 651         .remote_priv_sz = sizeof(struct qla_nvme_rport),
 652         .lsrqst_priv_sz = sizeof(struct nvme_private),
 653         .fcprqst_priv_sz = sizeof(struct nvme_private),
 654 };
 655
 656 void qla_nvme_unregister_remote_port(struct fc_port *fcport)
 657 {
 658         int ret;
 659
 660         if (!IS_ENABLED(CONFIG_NVME_FC))
 661                 return;
 662
 663         ql_log(ql_log_warn, NULL, 0x2112,
 664             "%s: unregister remoteport on %p %8phN\n",
 665             __func__, fcport, fcport->port_name);
 666
 667         if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags))
 668                 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
 669
 670         init_completion(&fcport->nvme_del_done);
 671         ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
 672         if (ret)
 673                 ql_log(ql_log_info, fcport->vha, 0x2114,
 674                         "%s: Failed to unregister nvme_remote_port (%d)\n",
 675                             __func__, ret);
 676         wait_for_completion(&fcport->nvme_del_done);
 677 }
 678
 679 void qla_nvme_delete(struct scsi_qla_host *vha)
 680 {
 681         int nv_ret;
 682
 683         if (!IS_ENABLED(CONFIG_NVME_FC))
 684                 return;
 685
 686         if (vha->nvme_local_port) {
 687                 init_completion(&vha->nvme_del_done);
 688                 ql_log(ql_log_info, vha, 0x2116,
 689                         "unregister localport=%p\n",
 690                         vha->nvme_local_port);
 691                 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
 692                 if (nv_ret)
 693                         ql_log(ql_log_info, vha, 0x2115,
 694                             "Unregister of localport failed\n");
 695                 else
 696                         wait_for_completion(&vha->nvme_del_done);
 697         }
 698 }
 699
 700 int qla_nvme_register_hba(struct scsi_qla_host *vha)
 701 {
 702         struct nvme_fc_port_template *tmpl;
 703         struct qla_hw_data *ha;
 704         struct nvme_fc_port_info pinfo;
 705         int ret = -EINVAL;
 706
 707         if (!IS_ENABLED(CONFIG_NVME_FC))
 708                 return ret;
 709
 710         ha = vha->hw;
 711         tmpl = &qla_nvme_fc_transport;
 712
 713         WARN_ON(vha->nvme_local_port);
 714
 715         if (ha->max_req_queues < 3) {
 716                 if (!ha->flags.max_req_queue_warned)
 717                         ql_log(ql_log_info, vha, 0x2120,
 718                                "%s: Disabling FC-NVME due to lack of free queue pairs (%d).\n",
 719                                __func__, ha->max_req_queues);
 720                 ha->flags.max_req_queue_warned = 1;
 721                 return ret;
 722         }
 723
 724         qla_nvme_fc_transport.max_hw_queues =
 725             min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
 726                 (uint8_t)(ha->max_req_queues - 2));
 727
 728         pinfo.node_name = wwn_to_u64(vha->node_name);
 729         pinfo.port_name = wwn_to_u64(vha->port_name);
 730         pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
 731         pinfo.port_id = vha->d_id.b24;
 732
 733         ql_log(ql_log_info, vha, 0xffff,
 734             "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
 735             pinfo.node_name, pinfo.port_name, pinfo.port_id);
 736         qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
 737
 738         ret = nvme_fc_register_localport(&pinfo, tmpl,
 739             get_device(&ha->pdev->dev), &vha->nvme_local_port);
 740         if (ret) {
 741                 ql_log(ql_log_warn, vha, 0xffff,
 742                     "register_localport failed: ret=%x\n", ret);
 743         } else {
 744                 vha->nvme_local_port->private = vha;
 745         }
 746
 747         return ret;
 748 }