drivers/scsi/qla2xxx/qla_nvme.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2017 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_nvme.h"
   8 #include <linux/scatterlist.h>
   9 #include <linux/delay.h>
  10 #include <linux/nvme.h>
  11 #include <linux/nvme-fc.h>
  12
  13 static struct nvme_fc_port_template qla_nvme_fc_transport;
  14
  15 int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
  16 {
  17         struct qla_nvme_rport *rport;
  18         struct nvme_fc_port_info req;
  19         int ret;
  20
  21         if (!IS_ENABLED(CONFIG_NVME_FC))
  22                 return 0;
  23
  24         if (!vha->flags.nvme_enabled) {
  25                 ql_log(ql_log_info, vha, 0x2100,
  26                     "%s: Not registering target since Host NVME is not enabled\n",
  27                     __func__);
  28                 return 0;
  29         }
  30
  31         if (!vha->nvme_local_port && qla_nvme_register_hba(vha))
  32                 return 0;
  33
  34         if (!(fcport->nvme_prli_service_param &
  35             (NVME_PRLI_SP_TARGET | NVME_PRLI_SP_DISCOVERY)) ||
  36                 (fcport->nvme_flag & NVME_FLAG_REGISTERED))
  37                 return 0;
  38
  39         fcport->nvme_flag &= ~NVME_FLAG_RESETTING;
  40
  41         memset(&req, 0, sizeof(struct nvme_fc_port_info));
  42         req.port_name = wwn_to_u64(fcport->port_name);
  43         req.node_name = wwn_to_u64(fcport->node_name);
  44         req.port_role = 0;
  45         req.dev_loss_tmo = NVME_FC_DEV_LOSS_TMO;
  46
  47         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR)
  48                 req.port_role = FC_PORT_ROLE_NVME_INITIATOR;
  49
  50         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_TARGET)
  51                 req.port_role |= FC_PORT_ROLE_NVME_TARGET;
  52
  53         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_DISCOVERY)
  54                 req.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
  55
  56         req.port_id = fcport->d_id.b24;
  57
  58         ql_log(ql_log_info, vha, 0x2102,
  59             "%s: traddr=nn-0x%016llx:pn-0x%016llx PortID:%06x\n",
  60             __func__, req.node_name, req.port_name,
  61             req.port_id);
  62
  63         ret = nvme_fc_register_remoteport(vha->nvme_local_port, &req,
  64             &fcport->nvme_remote_port);
  65         if (ret) {
  66                 ql_log(ql_log_warn, vha, 0x212e,
  67                     "Failed to register remote port. Transport returned %d\n",
  68                     ret);
  69                 return ret;
  70         }
  71
  72         rport = fcport->nvme_remote_port->private;
  73         rport->fcport = fcport;
  74
  75         fcport->nvme_flag |= NVME_FLAG_REGISTERED;
  76         return 0;
  77 }
  78
  79 /* Allocate a queue for NVMe traffic */
  80 static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport,
  81     unsigned int qidx, u16 qsize, void **handle)
  82 {
  83         struct scsi_qla_host *vha;
  84         struct qla_hw_data *ha;
  85         struct qla_qpair *qpair;
  86
  87         if (!qidx)
  88                 qidx++;
  89
  90         vha = (struct scsi_qla_host *)lport->private;
  91         ha = vha->hw;
  92
  93         ql_log(ql_log_info, vha, 0x2104,
  94             "%s: handle %p, idx =%d, qsize %d\n",
  95             __func__, handle, qidx, qsize);
  96
  97         if (qidx > qla_nvme_fc_transport.max_hw_queues) {
  98                 ql_log(ql_log_warn, vha, 0x212f,
  99                     "%s: Illegal qidx=%d. Max=%d\n",
 100                     __func__, qidx, qla_nvme_fc_transport.max_hw_queues);
 101                 return -EINVAL;
 102         }
 103
 104         if (ha->queue_pair_map[qidx]) {
 105                 *handle = ha->queue_pair_map[qidx];
 106                 ql_log(ql_log_info, vha, 0x2121,
 107                     "Returning existing qpair of %p for idx=%x\n",
 108                     *handle, qidx);
 109                 return 0;
 110         }
 111
 112         qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
 113         if (qpair == NULL) {
 114                 ql_log(ql_log_warn, vha, 0x2122,
 115                     "Failed to allocate qpair\n");
 116                 return -EINVAL;
 117         }
 118         *handle = qpair;
 119
 120         return 0;
 121 }
 122
 123 static void qla_nvme_release_fcp_cmd_kref(struct kref *kref)
 124 {
 125         struct srb *sp = container_of(kref, struct srb, cmd_kref);
 126         struct nvme_private *priv = (struct nvme_private *)sp->priv;
 127         struct nvmefc_fcp_req *fd;
 128         struct srb_iocb *nvme;
 129         unsigned long flags;
 130
 131         if (!priv)
 132                 goto out;
 133
 134         nvme = &sp->u.iocb_cmd;
 135         fd = nvme->u.nvme.desc;
 136
 137         spin_lock_irqsave(&priv->cmd_lock, flags);
 138         priv->sp = NULL;
 139         sp->priv = NULL;
 140         if (priv->comp_status == QLA_SUCCESS) {
 141                 fd->rcv_rsplen = nvme->u.nvme.rsp_pyld_len;
 142         } else {
 143                 fd->rcv_rsplen = 0;
 144                 fd->transferred_length = 0;
 145         }
 146         fd->status = 0;
 147         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 148
 149         fd->done(fd);
 150 out:
 151         qla2xxx_rel_qpair_sp(sp->qpair, sp);
 152 }
 153
 154 static void qla_nvme_release_ls_cmd_kref(struct kref *kref)
 155 {
 156         struct srb *sp = container_of(kref, struct srb, cmd_kref);
 157         struct nvme_private *priv = (struct nvme_private *)sp->priv;
 158         struct nvmefc_ls_req *fd;
 159         unsigned long flags;
 160
 161         if (!priv)
 162                 goto out;
 163
 164         spin_lock_irqsave(&priv->cmd_lock, flags);
 165         priv->sp = NULL;
 166         sp->priv = NULL;
 167         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 168
 169         fd = priv->fd;
 170         fd->done(fd, priv->comp_status);
 171 out:
 172         qla2x00_rel_sp(sp);
 173 }
 174
 175 static void qla_nvme_ls_complete(struct work_struct *work)
 176 {
 177         struct nvme_private *priv =
 178                 container_of(work, struct nvme_private, ls_work);
 179
 180         kref_put(&priv->sp->cmd_kref, qla_nvme_release_ls_cmd_kref);
 181 }
 182
 183 static void qla_nvme_sp_ls_done(srb_t *sp, int res)
 184 {
 185         struct nvme_private *priv = sp->priv;
 186
 187         if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0))
 188                 return;
 189
 190         if (res)
 191                 res = -EINVAL;
 192
 193         priv->comp_status = res;
 194         INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
 195         schedule_work(&priv->ls_work);
 196 }
 197
 198 /* it assumed that QPair lock is held. */
 199 static void qla_nvme_sp_done(srb_t *sp, int res)
 200 {
 201         struct nvme_private *priv = sp->priv;
 202
 203         priv->comp_status = res;
 204         kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref);
 205
 206         return;
 207 }
 208
 209 static void qla_nvme_abort_work(struct work_struct *work)
 210 {
 211         struct nvme_private *priv =
 212                 container_of(work, struct nvme_private, abort_work);
 213         srb_t *sp = priv->sp;
 214         fc_port_t *fcport = sp->fcport;
 215         struct qla_hw_data *ha = fcport->vha->hw;
 216         int rval;
 217
 218         ql_dbg(ql_dbg_io, fcport->vha, 0xffff,
 219                "%s called for sp=%p, hndl=%x on fcport=%p deleted=%d\n",
 220                __func__, sp, sp->handle, fcport, fcport->deleted);
 221
 222         if (!ha->flags.fw_started && fcport->deleted)
 223                 goto out;
 224
 225         if (ha->flags.host_shutting_down) {
 226                 ql_log(ql_log_info, sp->fcport->vha, 0xffff,
 227                     "%s Calling done on sp: %p, type: 0x%x, sp->ref_count: 0x%x\n",
 228                     __func__, sp, sp->type, atomic_read(&sp->ref_count));
 229                 sp->done(sp, 0);
 230                 goto out;
 231         }
 232
 233         rval = ha->isp_ops->abort_command(sp);
 234
 235         ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
 236             "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
 237             __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
 238             sp, sp->handle, fcport, rval);
 239
 240 out:
 241         /* kref_get was done before work was schedule. */
 242         kref_put(&sp->cmd_kref, sp->put_fn);
 243 }
 244
 245 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
 246     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 247 {
 248         struct nvme_private *priv = fd->private;
 249         unsigned long flags;
 250
 251         spin_lock_irqsave(&priv->cmd_lock, flags);
 252         if (!priv->sp) {
 253                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 254                 return;
 255         }
 256
 257         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 258                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 259                 return;
 260         }
 261         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 262
 263         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 264         schedule_work(&priv->abort_work);
 265 }
 266
 267 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
 268     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 269 {
 270         struct qla_nvme_rport *qla_rport = rport->private;
 271         fc_port_t *fcport = qla_rport->fcport;
 272         struct srb_iocb   *nvme;
 273         struct nvme_private *priv = fd->private;
 274         struct scsi_qla_host *vha;
 275         int     rval = QLA_FUNCTION_FAILED;
 276         struct qla_hw_data *ha;
 277         srb_t           *sp;
 278
 279
 280         if (!fcport || (fcport && fcport->deleted))
 281                 return rval;
 282
 283         vha = fcport->vha;
 284         ha = vha->hw;
 285
 286         if (!ha->flags.fw_started)
 287                 return rval;
 288
 289         /* Alloc SRB structure */
 290         sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
 291         if (!sp)
 292                 return rval;
 293
 294         sp->type = SRB_NVME_LS;
 295         sp->name = "nvme_ls";
 296         sp->done = qla_nvme_sp_ls_done;
 297         sp->put_fn = qla_nvme_release_ls_cmd_kref;
 298         sp->priv = (void *)priv;
 299         priv->sp = sp;
 300         kref_init(&sp->cmd_kref);
 301         spin_lock_init(&priv->cmd_lock);
 302         nvme = &sp->u.iocb_cmd;
 303         priv->fd = fd;
 304         nvme->u.nvme.desc = fd;
 305         nvme->u.nvme.dir = 0;
 306         nvme->u.nvme.dl = 0;
 307         nvme->u.nvme.cmd_len = fd->rqstlen;
 308         nvme->u.nvme.rsp_len = fd->rsplen;
 309         nvme->u.nvme.rsp_dma = fd->rspdma;
 310         nvme->u.nvme.timeout_sec = fd->timeout;
 311         nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
 312             fd->rqstlen, DMA_TO_DEVICE);
 313         dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
 314             fd->rqstlen, DMA_TO_DEVICE);
 315
 316         rval = qla2x00_start_sp(sp);
 317         if (rval != QLA_SUCCESS) {
 318                 ql_log(ql_log_warn, vha, 0x700e,
 319                     "qla2x00_start_sp failed = %d\n", rval);
 320                 wake_up(&sp->nvme_ls_waitq);
 321                 sp->priv = NULL;
 322                 priv->sp = NULL;
 323                 qla2x00_rel_sp(sp);
 324                 return rval;
 325         }
 326
 327         return rval;
 328 }
 329
 330 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
 331     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 332     struct nvmefc_fcp_req *fd)
 333 {
 334         struct nvme_private *priv = fd->private;
 335         unsigned long flags;
 336
 337         spin_lock_irqsave(&priv->cmd_lock, flags);
 338         if (!priv->sp) {
 339                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 340                 return;
 341         }
 342         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 343                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 344                 return;
 345         }
 346         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 347
 348         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 349         schedule_work(&priv->abort_work);
 350 }
 351
 352 static inline int qla2x00_start_nvme_mq(srb_t *sp)
 353 {
 354         unsigned long   flags;
 355         uint32_t        *clr_ptr;
 356         uint32_t        index;
 357         uint32_t        handle;
 358         struct cmd_nvme *cmd_pkt;
 359         uint16_t        cnt, i;
 360         uint16_t        req_cnt;
 361         uint16_t        tot_dsds;
 362         uint16_t        avail_dsds;
 363         struct dsd64    *cur_dsd;
 364         struct req_que *req = NULL;
 365         struct scsi_qla_host *vha = sp->fcport->vha;
 366         struct qla_hw_data *ha = vha->hw;
 367         struct qla_qpair *qpair = sp->qpair;
 368         struct srb_iocb *nvme = &sp->u.iocb_cmd;
 369         struct scatterlist *sgl, *sg;
 370         struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
 371         uint32_t        rval = QLA_SUCCESS;
 372
 373         /* Setup qpair pointers */
 374         req = qpair->req;
 375         tot_dsds = fd->sg_cnt;
 376
 377         /* Acquire qpair specific lock */
 378         spin_lock_irqsave(&qpair->qp_lock, flags);
 379
 380         /* Check for room in outstanding command list. */
 381         handle = req->current_outstanding_cmd;
 382         for (index = 1; index < req->num_outstanding_cmds; index++) {
 383                 handle++;
 384                 if (handle == req->num_outstanding_cmds)
 385                         handle = 1;
 386                 if (!req->outstanding_cmds[handle])
 387                         break;
 388         }
 389
 390         if (index == req->num_outstanding_cmds) {
 391                 rval = -EBUSY;
 392                 goto queuing_error;
 393         }
 394         req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
 395         if (req->cnt < (req_cnt + 2)) {
 396                 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
 397                     RD_REG_DWORD_RELAXED(req->req_q_out);
 398
 399                 if (req->ring_index < cnt)
 400                         req->cnt = cnt - req->ring_index;
 401                 else
 402                         req->cnt = req->length - (req->ring_index - cnt);
 403
 404                 if (req->cnt < (req_cnt + 2)){
 405                         rval = -EBUSY;
 406                         goto queuing_error;
 407                 }
 408         }
 409
 410         if (unlikely(!fd->sqid)) {
 411                 struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
 412
 413                 if (cmd->sqe.common.opcode == nvme_admin_async_event) {
 414                         nvme->u.nvme.aen_op = 1;
 415                         atomic_inc(&ha->nvme_active_aen_cnt);
 416                 }
 417         }
 418
 419         /* Build command packet. */
 420         req->current_outstanding_cmd = handle;
 421         req->outstanding_cmds[handle] = sp;
 422         sp->handle = handle;
 423         req->cnt -= req_cnt;
 424
 425         cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
 426         cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
 427
 428         /* Zero out remaining portion of packet. */
 429         clr_ptr = (uint32_t *)cmd_pkt + 2;
 430         memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
 431
 432         cmd_pkt->entry_status = 0;
 433
 434         /* Update entry type to indicate Command NVME IOCB */
 435         cmd_pkt->entry_type = COMMAND_NVME;
 436
 437         /* No data transfer how do we check buffer len == 0?? */
 438         if (fd->io_dir == NVMEFC_FCP_READ) {
 439                 cmd_pkt->control_flags = CF_READ_DATA;
 440                 vha->qla_stats.input_bytes += fd->payload_length;
 441                 vha->qla_stats.input_requests++;
 442         } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
 443                 cmd_pkt->control_flags = CF_WRITE_DATA;
 444                 if ((vha->flags.nvme_first_burst) &&
 445                     (sp->fcport->nvme_prli_service_param &
 446                         NVME_PRLI_SP_FIRST_BURST)) {
 447                         if ((fd->payload_length <=
 448                             sp->fcport->nvme_first_burst_size) ||
 449                                 (sp->fcport->nvme_first_burst_size == 0))
 450                                 cmd_pkt->control_flags |=
 451                                     CF_NVME_FIRST_BURST_ENABLE;
 452                 }
 453                 vha->qla_stats.output_bytes += fd->payload_length;
 454                 vha->qla_stats.output_requests++;
 455         } else if (fd->io_dir == 0) {
 456                 cmd_pkt->control_flags = 0;
 457         }
 458
 459         /* Set NPORT-ID */
 460         cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
 461         cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
 462         cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
 463         cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
 464         cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
 465
 466         /* NVME RSP IU */
 467         cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
 468         put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address);
 469
 470         /* NVME CNMD IU */
 471         cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
 472         cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(fd->cmddma);
 473
 474         cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
 475         cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
 476
 477         /* One DSD is available in the Command Type NVME IOCB */
 478         avail_dsds = 1;
 479         cur_dsd = &cmd_pkt->nvme_dsd;
 480         sgl = fd->first_sgl;
 481
 482         /* Load data segments */
 483         for_each_sg(sgl, sg, tot_dsds, i) {
 484                 cont_a64_entry_t *cont_pkt;
 485
 486                 /* Allocate additional continuation packets? */
 487                 if (avail_dsds == 0) {
 488                         /*
 489                          * Five DSDs are available in the Continuation
 490                          * Type 1 IOCB.
 491                          */
 492
 493                         /* Adjust ring index */
 494                         req->ring_index++;
 495                         if (req->ring_index == req->length) {
 496                                 req->ring_index = 0;
 497                                 req->ring_ptr = req->ring;
 498                         } else {
 499                                 req->ring_ptr++;
 500                         }
 501                         cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
 502                         put_unaligned_le32(CONTINUE_A64_TYPE,
 503                                            &cont_pkt->entry_type);
 504
 505                         cur_dsd = cont_pkt->dsd;
 506                         avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
 507                 }
 508
 509                 append_dsd64(&cur_dsd, sg);
 510                 avail_dsds--;
 511         }
 512
 513         /* Set total entry count. */
 514         cmd_pkt->entry_count = (uint8_t)req_cnt;
 515         wmb();
 516
 517         /* Adjust ring index. */
 518         req->ring_index++;
 519         if (req->ring_index == req->length) {
 520                 req->ring_index = 0;
 521                 req->ring_ptr = req->ring;
 522         } else {
 523                 req->ring_ptr++;
 524         }
 525
 526         /* Set chip new ring index. */
 527         WRT_REG_DWORD(req->req_q_in, req->ring_index);
 528
 529 queuing_error:
 530         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 531         return rval;
 532 }
 533
 534 /* Post a command */
 535 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
 536     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 537     struct nvmefc_fcp_req *fd)
 538 {
 539         fc_port_t *fcport;
 540         struct srb_iocb *nvme;
 541         struct scsi_qla_host *vha;
 542         int rval = -ENODEV;
 543         srb_t *sp;
 544         struct qla_qpair *qpair = hw_queue_handle;
 545         struct nvme_private *priv = fd->private;
 546         struct qla_nvme_rport *qla_rport = rport->private;
 547
 548         fcport = qla_rport->fcport;
 549
 550         if (!qpair || !fcport || (qpair && !qpair->fw_started) ||
 551             (fcport && fcport->deleted))
 552                 return rval;
 553
 554         vha = fcport->vha;
 555         /*
 556          * If we know the dev is going away while the transport is still sending
 557          * IO's return busy back to stall the IO Q.  This happens when the
 558          * link goes away and fw hasn't notified us yet, but IO's are being
 559          * returned. If the dev comes back quickly we won't exhaust the IO
 560          * retry count at the core.
 561          */
 562         if (fcport->nvme_flag & NVME_FLAG_RESETTING)
 563                 return -EBUSY;
 564
 565         /* Alloc SRB structure */
 566         sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
 567         if (!sp)
 568                 return -EBUSY;
 569
 570         init_waitqueue_head(&sp->nvme_ls_waitq);
 571         kref_init(&sp->cmd_kref);
 572         spin_lock_init(&priv->cmd_lock);
 573         sp->priv = (void *)priv;
 574         priv->sp = sp;
 575         sp->type = SRB_NVME_CMD;
 576         sp->name = "nvme_cmd";
 577         sp->done = qla_nvme_sp_done;
 578         sp->put_fn = qla_nvme_release_fcp_cmd_kref;
 579         sp->qpair = qpair;
 580         sp->vha = vha;
 581         nvme = &sp->u.iocb_cmd;
 582         nvme->u.nvme.desc = fd;
 583
 584         rval = qla2x00_start_nvme_mq(sp);
 585         if (rval != QLA_SUCCESS) {
 586                 ql_log(ql_log_warn, vha, 0x212d,
 587                     "qla2x00_start_nvme_mq failed = %d\n", rval);
 588                 wake_up(&sp->nvme_ls_waitq);
 589                 sp->priv = NULL;
 590                 priv->sp = NULL;
 591                 qla2xxx_rel_qpair_sp(sp->qpair, sp);
 592         }
 593
 594         return rval;
 595 }
 596
 597 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
 598 {
 599         struct scsi_qla_host *vha = lport->private;
 600
 601         ql_log(ql_log_info, vha, 0x210f,
 602             "localport delete of %p completed.\n", vha->nvme_local_port);
 603         vha->nvme_local_port = NULL;
 604         complete(&vha->nvme_del_done);
 605 }
 606
 607 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
 608 {
 609         fc_port_t *fcport;
 610         struct qla_nvme_rport *qla_rport = rport->private;
 611
 612         fcport = qla_rport->fcport;
 613         fcport->nvme_remote_port = NULL;
 614         fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
 615         fcport->nvme_flag &= ~NVME_FLAG_DELETING;
 616         ql_log(ql_log_info, fcport->vha, 0x2110,
 617             "remoteport_delete of %p %8phN completed.\n",
 618             fcport, fcport->port_name);
 619         complete(&fcport->nvme_del_done);
 620 }
 621
 622 static struct nvme_fc_port_template qla_nvme_fc_transport = {
 623         .localport_delete = qla_nvme_localport_delete,
 624         .remoteport_delete = qla_nvme_remoteport_delete,
 625         .create_queue   = qla_nvme_alloc_queue,
 626         .delete_queue   = NULL,
 627         .ls_req         = qla_nvme_ls_req,
 628         .ls_abort       = qla_nvme_ls_abort,
 629         .fcp_io         = qla_nvme_post_cmd,
 630         .fcp_abort      = qla_nvme_fcp_abort,
 631         .max_hw_queues  = 8,
 632         .max_sgl_segments = 1024,
 633         .max_dif_sgl_segments = 64,
 634         .dma_boundary = 0xFFFFFFFF,
 635         .local_priv_sz  = 8,
 636         .remote_priv_sz = sizeof(struct qla_nvme_rport),
 637         .lsrqst_priv_sz = sizeof(struct nvme_private),
 638         .fcprqst_priv_sz = sizeof(struct nvme_private),
 639 };
 640
 641 void qla_nvme_unregister_remote_port(struct fc_port *fcport)
 642 {
 643         int ret;
 644
 645         if (!IS_ENABLED(CONFIG_NVME_FC))
 646                 return;
 647
 648         ql_log(ql_log_warn, NULL, 0x2112,
 649             "%s: unregister remoteport on %p %8phN\n",
 650             __func__, fcport, fcport->port_name);
 651
 652         if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags))
 653                 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
 654
 655         init_completion(&fcport->nvme_del_done);
 656         ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
 657         if (ret)
 658                 ql_log(ql_log_info, fcport->vha, 0x2114,
 659                         "%s: Failed to unregister nvme_remote_port (%d)\n",
 660                             __func__, ret);
 661         wait_for_completion(&fcport->nvme_del_done);
 662 }
 663
 664 void qla_nvme_delete(struct scsi_qla_host *vha)
 665 {
 666         int nv_ret;
 667
 668         if (!IS_ENABLED(CONFIG_NVME_FC))
 669                 return;
 670
 671         if (vha->nvme_local_port) {
 672                 init_completion(&vha->nvme_del_done);
 673                 ql_log(ql_log_info, vha, 0x2116,
 674                         "unregister localport=%p\n",
 675                         vha->nvme_local_port);
 676                 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
 677                 if (nv_ret)
 678                         ql_log(ql_log_info, vha, 0x2115,
 679                             "Unregister of localport failed\n");
 680                 else
 681                         wait_for_completion(&vha->nvme_del_done);
 682         }
 683 }
 684
 685 int qla_nvme_register_hba(struct scsi_qla_host *vha)
 686 {
 687         struct nvme_fc_port_template *tmpl;
 688         struct qla_hw_data *ha;
 689         struct nvme_fc_port_info pinfo;
 690         int ret = EINVAL;
 691
 692         if (!IS_ENABLED(CONFIG_NVME_FC))
 693                 return ret;
 694
 695         ha = vha->hw;
 696         tmpl = &qla_nvme_fc_transport;
 697
 698         WARN_ON(vha->nvme_local_port);
 699         WARN_ON(ha->max_req_queues < 3);
 700
 701         qla_nvme_fc_transport.max_hw_queues =
 702             min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
 703                 (uint8_t)(ha->max_req_queues - 2));
 704
 705         pinfo.node_name = wwn_to_u64(vha->node_name);
 706         pinfo.port_name = wwn_to_u64(vha->port_name);
 707         pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
 708         pinfo.port_id = vha->d_id.b24;
 709
 710         ql_log(ql_log_info, vha, 0xffff,
 711             "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
 712             pinfo.node_name, pinfo.port_name, pinfo.port_id);
 713         qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
 714
 715         ret = nvme_fc_register_localport(&pinfo, tmpl,
 716             get_device(&ha->pdev->dev), &vha->nvme_local_port);
 717         if (ret) {
 718                 ql_log(ql_log_warn, vha, 0xffff,
 719                     "register_localport failed: ret=%x\n", ret);
 720         } else {
 721                 vha->nvme_local_port->private = vha;
 722         }
 723
 724         return ret;
 725 }