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(void *ptr, int res)
 184 {
 185         srb_t *sp = ptr;
 186         struct nvme_private *priv;
 187
 188         if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0))
 189                 return;
 190
 191         if (res)
 192                 res = -EINVAL;
 193
 194         priv = (struct nvme_private *)sp->priv;
 195         priv->comp_status = res;
 196         INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
 197         schedule_work(&priv->ls_work);
 198 }
 199
 200 /* it assumed that QPair lock is held. */
 201 static void qla_nvme_sp_done(void *ptr, int res)
 202 {
 203         srb_t *sp = ptr;
 204         struct nvme_private *priv = (struct nvme_private *)sp->priv;
 205
 206         priv->comp_status = res;
 207         kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref);
 208
 209         return;
 210 }
 211
 212 static void qla_nvme_abort_work(struct work_struct *work)
 213 {
 214         struct nvme_private *priv =
 215                 container_of(work, struct nvme_private, abort_work);
 216         srb_t *sp = priv->sp;
 217         fc_port_t *fcport = sp->fcport;
 218         struct qla_hw_data *ha = fcport->vha->hw;
 219         int rval;
 220
 221         ql_dbg(ql_dbg_io, fcport->vha, 0xffff,
 222                "%s called for sp=%p, hndl=%x on fcport=%p deleted=%d\n",
 223                __func__, sp, sp->handle, fcport, fcport->deleted);
 224
 225         if (!ha->flags.fw_started && (fcport && fcport->deleted))
 226                 goto out;
 227
 228         if (ha->flags.host_shutting_down) {
 229                 ql_log(ql_log_info, sp->fcport->vha, 0xffff,
 230                     "%s Calling done on sp: %p, type: 0x%x, sp->ref_count: 0x%x\n",
 231                     __func__, sp, sp->type, atomic_read(&sp->ref_count));
 232                 sp->done(sp, 0);
 233                 goto out;
 234         }
 235
 236         rval = ha->isp_ops->abort_command(sp);
 237
 238         ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
 239             "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
 240             __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
 241             sp, sp->handle, fcport, rval);
 242
 243 out:
 244         /* kref_get was done before work was schedule. */
 245         kref_put(&sp->cmd_kref, sp->put_fn);
 246 }
 247
 248 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
 249     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 250 {
 251         struct nvme_private *priv = fd->private;
 252         unsigned long flags;
 253
 254         spin_lock_irqsave(&priv->cmd_lock, flags);
 255         if (!priv->sp) {
 256                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 257                 return;
 258         }
 259
 260         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 261                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 262                 return;
 263         }
 264         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 265
 266         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 267         schedule_work(&priv->abort_work);
 268 }
 269
 270
 271 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
 272     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 273 {
 274         struct qla_nvme_rport *qla_rport = rport->private;
 275         fc_port_t *fcport = qla_rport->fcport;
 276         struct srb_iocb   *nvme;
 277         struct nvme_private *priv = fd->private;
 278         struct scsi_qla_host *vha;
 279         int     rval = QLA_FUNCTION_FAILED;
 280         struct qla_hw_data *ha;
 281         srb_t           *sp;
 282
 283
 284         if (!fcport || (fcport && fcport->deleted))
 285                 return rval;
 286
 287         vha = fcport->vha;
 288         ha = vha->hw;
 289
 290         if (!ha->flags.fw_started)
 291                 return rval;
 292
 293         /* Alloc SRB structure */
 294         sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
 295         if (!sp)
 296                 return rval;
 297
 298         sp->type = SRB_NVME_LS;
 299         sp->name = "nvme_ls";
 300         sp->done = qla_nvme_sp_ls_done;
 301         sp->put_fn = qla_nvme_release_ls_cmd_kref;
 302         sp->priv = (void *)priv;
 303         priv->sp = sp;
 304         kref_init(&sp->cmd_kref);
 305         spin_lock_init(&priv->cmd_lock);
 306         nvme = &sp->u.iocb_cmd;
 307         priv->fd = fd;
 308         nvme->u.nvme.desc = fd;
 309         nvme->u.nvme.dir = 0;
 310         nvme->u.nvme.dl = 0;
 311         nvme->u.nvme.cmd_len = fd->rqstlen;
 312         nvme->u.nvme.rsp_len = fd->rsplen;
 313         nvme->u.nvme.rsp_dma = fd->rspdma;
 314         nvme->u.nvme.timeout_sec = fd->timeout;
 315         nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
 316             fd->rqstlen, DMA_TO_DEVICE);
 317         dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
 318             fd->rqstlen, DMA_TO_DEVICE);
 319
 320         rval = qla2x00_start_sp(sp);
 321         if (rval != QLA_SUCCESS) {
 322                 ql_log(ql_log_warn, vha, 0x700e,
 323                     "qla2x00_start_sp failed = %d\n", rval);
 324                 wake_up(&sp->nvme_ls_waitq);
 325                 sp->priv = NULL;
 326                 priv->sp = NULL;
 327                 qla2x00_rel_sp(sp);
 328                 return rval;
 329         }
 330
 331         return rval;
 332 }
 333
 334 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
 335     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 336     struct nvmefc_fcp_req *fd)
 337 {
 338         struct nvme_private *priv = fd->private;
 339         unsigned long flags;
 340
 341         spin_lock_irqsave(&priv->cmd_lock, flags);
 342         if (!priv->sp) {
 343                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 344                 return;
 345         }
 346         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 347                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 348                 return;
 349         }
 350         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 351
 352         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 353         schedule_work(&priv->abort_work);
 354 }
 355
 356 static inline int qla2x00_start_nvme_mq(srb_t *sp)
 357 {
 358         unsigned long   flags;
 359         uint32_t        *clr_ptr;
 360         uint32_t        index;
 361         uint32_t        handle;
 362         struct cmd_nvme *cmd_pkt;
 363         uint16_t        cnt, i;
 364         uint16_t        req_cnt;
 365         uint16_t        tot_dsds;
 366         uint16_t        avail_dsds;
 367         struct dsd64    *cur_dsd;
 368         struct req_que *req = NULL;
 369         struct scsi_qla_host *vha = sp->fcport->vha;
 370         struct qla_hw_data *ha = vha->hw;
 371         struct qla_qpair *qpair = sp->qpair;
 372         struct srb_iocb *nvme = &sp->u.iocb_cmd;
 373         struct scatterlist *sgl, *sg;
 374         struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
 375         uint32_t        rval = QLA_SUCCESS;
 376
 377         /* Setup qpair pointers */
 378         req = qpair->req;
 379         tot_dsds = fd->sg_cnt;
 380
 381         /* Acquire qpair specific lock */
 382         spin_lock_irqsave(&qpair->qp_lock, flags);
 383
 384         /* Check for room in outstanding command list. */
 385         handle = req->current_outstanding_cmd;
 386         for (index = 1; index < req->num_outstanding_cmds; index++) {
 387                 handle++;
 388                 if (handle == req->num_outstanding_cmds)
 389                         handle = 1;
 390                 if (!req->outstanding_cmds[handle])
 391                         break;
 392         }
 393
 394         if (index == req->num_outstanding_cmds) {
 395                 rval = -EBUSY;
 396                 goto queuing_error;
 397         }
 398         req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
 399         if (req->cnt < (req_cnt + 2)) {
 400                 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
 401                     RD_REG_DWORD_RELAXED(req->req_q_out);
 402
 403                 if (req->ring_index < cnt)
 404                         req->cnt = cnt - req->ring_index;
 405                 else
 406                         req->cnt = req->length - (req->ring_index - cnt);
 407
 408                 if (req->cnt < (req_cnt + 2)){
 409                         rval = -EBUSY;
 410                         goto queuing_error;
 411                 }
 412         }
 413
 414         if (unlikely(!fd->sqid)) {
 415                 struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
 416
 417                 if (cmd->sqe.common.opcode == nvme_admin_async_event) {
 418                         nvme->u.nvme.aen_op = 1;
 419                         atomic_inc(&ha->nvme_active_aen_cnt);
 420                 }
 421         }
 422
 423         /* Build command packet. */
 424         req->current_outstanding_cmd = handle;
 425         req->outstanding_cmds[handle] = sp;
 426         sp->handle = handle;
 427         req->cnt -= req_cnt;
 428
 429         cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
 430         cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
 431
 432         /* Zero out remaining portion of packet. */
 433         clr_ptr = (uint32_t *)cmd_pkt + 2;
 434         memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
 435
 436         cmd_pkt->entry_status = 0;
 437
 438         /* Update entry type to indicate Command NVME IOCB */
 439         cmd_pkt->entry_type = COMMAND_NVME;
 440
 441         /* No data transfer how do we check buffer len == 0?? */
 442         if (fd->io_dir == NVMEFC_FCP_READ) {
 443                 cmd_pkt->control_flags = CF_READ_DATA;
 444                 vha->qla_stats.input_bytes += fd->payload_length;
 445                 vha->qla_stats.input_requests++;
 446         } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
 447                 cmd_pkt->control_flags = CF_WRITE_DATA;
 448                 if ((vha->flags.nvme_first_burst) &&
 449                     (sp->fcport->nvme_prli_service_param &
 450                         NVME_PRLI_SP_FIRST_BURST)) {
 451                         if ((fd->payload_length <=
 452                             sp->fcport->nvme_first_burst_size) ||
 453                                 (sp->fcport->nvme_first_burst_size == 0))
 454                                 cmd_pkt->control_flags |=
 455                                     CF_NVME_FIRST_BURST_ENABLE;
 456                 }
 457                 vha->qla_stats.output_bytes += fd->payload_length;
 458                 vha->qla_stats.output_requests++;
 459         } else if (fd->io_dir == 0) {
 460                 cmd_pkt->control_flags = 0;
 461         }
 462
 463         /* Set NPORT-ID */
 464         cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
 465         cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
 466         cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
 467         cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
 468         cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
 469
 470         /* NVME RSP IU */
 471         cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
 472         put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address);
 473
 474         /* NVME CNMD IU */
 475         cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
 476         cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(fd->cmddma);
 477
 478         cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
 479         cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
 480
 481         /* One DSD is available in the Command Type NVME IOCB */
 482         avail_dsds = 1;
 483         cur_dsd = &cmd_pkt->nvme_dsd;
 484         sgl = fd->first_sgl;
 485
 486         /* Load data segments */
 487         for_each_sg(sgl, sg, tot_dsds, i) {
 488                 cont_a64_entry_t *cont_pkt;
 489
 490                 /* Allocate additional continuation packets? */
 491                 if (avail_dsds == 0) {
 492                         /*
 493                          * Five DSDs are available in the Continuation
 494                          * Type 1 IOCB.
 495                          */
 496
 497                         /* Adjust ring index */
 498                         req->ring_index++;
 499                         if (req->ring_index == req->length) {
 500                                 req->ring_index = 0;
 501                                 req->ring_ptr = req->ring;
 502                         } else {
 503                                 req->ring_ptr++;
 504                         }
 505                         cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
 506                         put_unaligned_le32(CONTINUE_A64_TYPE,
 507                                            &cont_pkt->entry_type);
 508
 509                         cur_dsd = cont_pkt->dsd;
 510                         avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
 511                 }
 512
 513                 append_dsd64(&cur_dsd, sg);
 514                 avail_dsds--;
 515         }
 516
 517         /* Set total entry count. */
 518         cmd_pkt->entry_count = (uint8_t)req_cnt;
 519         wmb();
 520
 521         /* Adjust ring index. */
 522         req->ring_index++;
 523         if (req->ring_index == req->length) {
 524                 req->ring_index = 0;
 525                 req->ring_ptr = req->ring;
 526         } else {
 527                 req->ring_ptr++;
 528         }
 529
 530         /* Set chip new ring index. */
 531         WRT_REG_DWORD(req->req_q_in, req->ring_index);
 532
 533 queuing_error:
 534         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 535         return rval;
 536 }
 537
 538 /* Post a command */
 539 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
 540     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 541     struct nvmefc_fcp_req *fd)
 542 {
 543         fc_port_t *fcport;
 544         struct srb_iocb *nvme;
 545         struct scsi_qla_host *vha;
 546         int rval = -ENODEV;
 547         srb_t *sp;
 548         struct qla_qpair *qpair = hw_queue_handle;
 549         struct nvme_private *priv = fd->private;
 550         struct qla_nvme_rport *qla_rport = rport->private;
 551
 552         fcport = qla_rport->fcport;
 553
 554         if (!qpair || !fcport || (qpair && !qpair->fw_started) ||
 555             (fcport && fcport->deleted))
 556                 return rval;
 557
 558         vha = fcport->vha;
 559         /*
 560          * If we know the dev is going away while the transport is still sending
 561          * IO's return busy back to stall the IO Q.  This happens when the
 562          * link goes away and fw hasn't notified us yet, but IO's are being
 563          * returned. If the dev comes back quickly we won't exhaust the IO
 564          * retry count at the core.
 565          */
 566         if (fcport->nvme_flag & NVME_FLAG_RESETTING)
 567                 return -EBUSY;
 568
 569         /* Alloc SRB structure */
 570         sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
 571         if (!sp)
 572                 return -EBUSY;
 573
 574         init_waitqueue_head(&sp->nvme_ls_waitq);
 575         kref_init(&sp->cmd_kref);
 576         spin_lock_init(&priv->cmd_lock);
 577         sp->priv = (void *)priv;
 578         priv->sp = sp;
 579         sp->type = SRB_NVME_CMD;
 580         sp->name = "nvme_cmd";
 581         sp->done = qla_nvme_sp_done;
 582         sp->put_fn = qla_nvme_release_fcp_cmd_kref;
 583         sp->qpair = qpair;
 584         sp->vha = vha;
 585         nvme = &sp->u.iocb_cmd;
 586         nvme->u.nvme.desc = fd;
 587
 588         rval = qla2x00_start_nvme_mq(sp);
 589         if (rval != QLA_SUCCESS) {
 590                 ql_log(ql_log_warn, vha, 0x212d,
 591                     "qla2x00_start_nvme_mq failed = %d\n", rval);
 592                 wake_up(&sp->nvme_ls_waitq);
 593                 sp->priv = NULL;
 594                 priv->sp = NULL;
 595                 qla2xxx_rel_qpair_sp(sp->qpair, sp);
 596         }
 597
 598         return rval;
 599 }
 600
 601 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
 602 {
 603         struct scsi_qla_host *vha = lport->private;
 604
 605         ql_log(ql_log_info, vha, 0x210f,
 606             "localport delete of %p completed.\n", vha->nvme_local_port);
 607         vha->nvme_local_port = NULL;
 608         complete(&vha->nvme_del_done);
 609 }
 610
 611 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
 612 {
 613         fc_port_t *fcport;
 614         struct qla_nvme_rport *qla_rport = rport->private;
 615
 616         fcport = qla_rport->fcport;
 617         fcport->nvme_remote_port = NULL;
 618         fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
 619         fcport->nvme_flag &= ~NVME_FLAG_DELETING;
 620         ql_log(ql_log_info, fcport->vha, 0x2110,
 621             "remoteport_delete of %p %8phN completed.\n",
 622             fcport, fcport->port_name);
 623         complete(&fcport->nvme_del_done);
 624 }
 625
 626 static struct nvme_fc_port_template qla_nvme_fc_transport = {
 627         .localport_delete = qla_nvme_localport_delete,
 628         .remoteport_delete = qla_nvme_remoteport_delete,
 629         .create_queue   = qla_nvme_alloc_queue,
 630         .delete_queue   = NULL,
 631         .ls_req         = qla_nvme_ls_req,
 632         .ls_abort       = qla_nvme_ls_abort,
 633         .fcp_io         = qla_nvme_post_cmd,
 634         .fcp_abort      = qla_nvme_fcp_abort,
 635         .max_hw_queues  = 8,
 636         .max_sgl_segments = 1024,
 637         .max_dif_sgl_segments = 64,
 638         .dma_boundary = 0xFFFFFFFF,
 639         .local_priv_sz  = 8,
 640         .remote_priv_sz = sizeof(struct qla_nvme_rport),
 641         .lsrqst_priv_sz = sizeof(struct nvme_private),
 642         .fcprqst_priv_sz = sizeof(struct nvme_private),
 643 };
 644
 645 void qla_nvme_unregister_remote_port(struct fc_port *fcport)
 646 {
 647         int ret;
 648
 649         if (!IS_ENABLED(CONFIG_NVME_FC))
 650                 return;
 651
 652         ql_log(ql_log_warn, NULL, 0x2112,
 653             "%s: unregister remoteport on %p %8phN\n",
 654             __func__, fcport, fcport->port_name);
 655
 656         nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
 657         init_completion(&fcport->nvme_del_done);
 658         ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
 659         if (ret)
 660                 ql_log(ql_log_info, fcport->vha, 0x2114,
 661                         "%s: Failed to unregister nvme_remote_port (%d)\n",
 662                             __func__, ret);
 663         wait_for_completion(&fcport->nvme_del_done);
 664 }
 665
 666 void qla_nvme_delete(struct scsi_qla_host *vha)
 667 {
 668         int nv_ret;
 669
 670         if (!IS_ENABLED(CONFIG_NVME_FC))
 671                 return;
 672
 673         if (vha->nvme_local_port) {
 674                 init_completion(&vha->nvme_del_done);
 675                 ql_log(ql_log_info, vha, 0x2116,
 676                         "unregister localport=%p\n",
 677                         vha->nvme_local_port);
 678                 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
 679                 if (nv_ret)
 680                         ql_log(ql_log_info, vha, 0x2115,
 681                             "Unregister of localport failed\n");
 682                 else
 683                         wait_for_completion(&vha->nvme_del_done);
 684         }
 685 }
 686
 687 int qla_nvme_register_hba(struct scsi_qla_host *vha)
 688 {
 689         struct nvme_fc_port_template *tmpl;
 690         struct qla_hw_data *ha;
 691         struct nvme_fc_port_info pinfo;
 692         int ret = EINVAL;
 693
 694         if (!IS_ENABLED(CONFIG_NVME_FC))
 695                 return ret;
 696
 697         ha = vha->hw;
 698         tmpl = &qla_nvme_fc_transport;
 699
 700         WARN_ON(vha->nvme_local_port);
 701         WARN_ON(ha->max_req_queues < 3);
 702
 703         qla_nvme_fc_transport.max_hw_queues =
 704             min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
 705                 (uint8_t)(ha->max_req_queues - 2));
 706
 707         pinfo.node_name = wwn_to_u64(vha->node_name);
 708         pinfo.port_name = wwn_to_u64(vha->port_name);
 709         pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
 710         pinfo.port_id = vha->d_id.b24;
 711
 712         ql_log(ql_log_info, vha, 0xffff,
 713             "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
 714             pinfo.node_name, pinfo.port_name, pinfo.port_id);
 715         qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
 716
 717         ret = nvme_fc_register_localport(&pinfo, tmpl,
 718             get_device(&ha->pdev->dev), &vha->nvme_local_port);
 719         if (ret) {
 720                 ql_log(ql_log_warn, vha, 0xffff,
 721                     "register_localport failed: ret=%x\n", ret);
 722         } else {
 723                 vha->nvme_local_port->private = vha;
 724         }
 725
 726         return ret;
 727 }