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 = le16_to_cpu(nvme->u.nvme.rsp_pyld_len);
 142                 fd->status = NVME_SC_SUCCESS;
 143         } else {
 144                 fd->rcv_rsplen = 0;
 145                 fd->transferred_length = 0;
 146                 fd->status = NVME_SC_INTERNAL;
 147         }
 148         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 149
 150         fd->done(fd);
 151 out:
 152         qla2xxx_rel_qpair_sp(sp->qpair, sp);
 153 }
 154
 155 static void qla_nvme_release_ls_cmd_kref(struct kref *kref)
 156 {
 157         struct srb *sp = container_of(kref, struct srb, cmd_kref);
 158         struct nvme_private *priv = (struct nvme_private *)sp->priv;
 159         struct nvmefc_ls_req *fd;
 160         unsigned long flags;
 161
 162         if (!priv)
 163                 goto out;
 164
 165         spin_lock_irqsave(&priv->cmd_lock, flags);
 166         priv->sp = NULL;
 167         sp->priv = NULL;
 168         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 169
 170         fd = priv->fd;
 171         fd->done(fd, priv->comp_status);
 172 out:
 173         qla2x00_rel_sp(sp);
 174 }
 175
 176 static void qla_nvme_ls_complete(struct work_struct *work)
 177 {
 178         struct nvme_private *priv =
 179                 container_of(work, struct nvme_private, ls_work);
 180
 181         kref_put(&priv->sp->cmd_kref, qla_nvme_release_ls_cmd_kref);
 182 }
 183
 184 static void qla_nvme_sp_ls_done(srb_t *sp, int res)
 185 {
 186         struct nvme_private *priv = sp->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->comp_status = res;
 195         INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
 196         schedule_work(&priv->ls_work);
 197 }
 198
 199 /* it assumed that QPair lock is held. */
 200 static void qla_nvme_sp_done(srb_t *sp, int res)
 201 {
 202         struct nvme_private *priv = sp->priv;
 203
 204         priv->comp_status = res;
 205         kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref);
 206
 207         return;
 208 }
 209
 210 static void qla_nvme_abort_work(struct work_struct *work)
 211 {
 212         struct nvme_private *priv =
 213                 container_of(work, struct nvme_private, abort_work);
 214         srb_t *sp = priv->sp;
 215         fc_port_t *fcport = sp->fcport;
 216         struct qla_hw_data *ha = fcport->vha->hw;
 217         int rval;
 218
 219         ql_dbg(ql_dbg_io, fcport->vha, 0xffff,
 220                "%s called for sp=%p, hndl=%x on fcport=%p deleted=%d\n",
 221                __func__, sp, sp->handle, fcport, fcport->deleted);
 222
 223         if (!ha->flags.fw_started && fcport->deleted)
 224                 goto out;
 225
 226         if (ha->flags.host_shutting_down) {
 227                 ql_log(ql_log_info, sp->fcport->vha, 0xffff,
 228                     "%s Calling done on sp: %p, type: 0x%x\n",
 229                     __func__, sp, sp->type);
 230                 sp->done(sp, 0);
 231                 goto out;
 232         }
 233
 234         rval = ha->isp_ops->abort_command(sp);
 235
 236         ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
 237             "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
 238             __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
 239             sp, sp->handle, fcport, rval);
 240
 241 out:
 242         /* kref_get was done before work was schedule. */
 243         kref_put(&sp->cmd_kref, sp->put_fn);
 244 }
 245
 246 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
 247     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 248 {
 249         struct nvme_private *priv = fd->private;
 250         unsigned long flags;
 251
 252         spin_lock_irqsave(&priv->cmd_lock, flags);
 253         if (!priv->sp) {
 254                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 255                 return;
 256         }
 257
 258         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 259                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 260                 return;
 261         }
 262         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 263
 264         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 265         schedule_work(&priv->abort_work);
 266 }
 267
 268 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
 269     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 270 {
 271         struct qla_nvme_rport *qla_rport = rport->private;
 272         fc_port_t *fcport = qla_rport->fcport;
 273         struct srb_iocb   *nvme;
 274         struct nvme_private *priv = fd->private;
 275         struct scsi_qla_host *vha;
 276         int     rval = QLA_FUNCTION_FAILED;
 277         struct qla_hw_data *ha;
 278         srb_t           *sp;
 279
 280
 281         if (!fcport || (fcport && fcport->deleted))
 282                 return rval;
 283
 284         vha = fcport->vha;
 285         ha = vha->hw;
 286
 287         if (!ha->flags.fw_started)
 288                 return rval;
 289
 290         /* Alloc SRB structure */
 291         sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
 292         if (!sp)
 293                 return rval;
 294
 295         sp->type = SRB_NVME_LS;
 296         sp->name = "nvme_ls";
 297         sp->done = qla_nvme_sp_ls_done;
 298         sp->put_fn = qla_nvme_release_ls_cmd_kref;
 299         sp->priv = priv;
 300         priv->sp = sp;
 301         kref_init(&sp->cmd_kref);
 302         spin_lock_init(&priv->cmd_lock);
 303         nvme = &sp->u.iocb_cmd;
 304         priv->fd = fd;
 305         nvme->u.nvme.desc = fd;
 306         nvme->u.nvme.dir = 0;
 307         nvme->u.nvme.dl = 0;
 308         nvme->u.nvme.cmd_len = fd->rqstlen;
 309         nvme->u.nvme.rsp_len = fd->rsplen;
 310         nvme->u.nvme.rsp_dma = fd->rspdma;
 311         nvme->u.nvme.timeout_sec = fd->timeout;
 312         nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
 313             fd->rqstlen, DMA_TO_DEVICE);
 314         dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
 315             fd->rqstlen, DMA_TO_DEVICE);
 316
 317         rval = qla2x00_start_sp(sp);
 318         if (rval != QLA_SUCCESS) {
 319                 ql_log(ql_log_warn, vha, 0x700e,
 320                     "qla2x00_start_sp failed = %d\n", rval);
 321                 wake_up(&sp->nvme_ls_waitq);
 322                 sp->priv = NULL;
 323                 priv->sp = NULL;
 324                 qla2x00_rel_sp(sp);
 325                 return rval;
 326         }
 327
 328         return rval;
 329 }
 330
 331 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
 332     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 333     struct nvmefc_fcp_req *fd)
 334 {
 335         struct nvme_private *priv = fd->private;
 336         unsigned long flags;
 337
 338         spin_lock_irqsave(&priv->cmd_lock, flags);
 339         if (!priv->sp) {
 340                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 341                 return;
 342         }
 343         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 344                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 345                 return;
 346         }
 347         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 348
 349         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 350         schedule_work(&priv->abort_work);
 351 }
 352
 353 static inline int qla2x00_start_nvme_mq(srb_t *sp)
 354 {
 355         unsigned long   flags;
 356         uint32_t        *clr_ptr;
 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         handle = qla2xxx_get_next_handle(req);
 381         if (handle == 0) {
 382                 rval = -EBUSY;
 383                 goto queuing_error;
 384         }
 385         req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
 386         if (req->cnt < (req_cnt + 2)) {
 387                 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
 388                     rd_reg_dword_relaxed(req->req_q_out);
 389
 390                 if (req->ring_index < cnt)
 391                         req->cnt = cnt - req->ring_index;
 392                 else
 393                         req->cnt = req->length - (req->ring_index - cnt);
 394
 395                 if (req->cnt < (req_cnt + 2)){
 396                         rval = -EBUSY;
 397                         goto queuing_error;
 398                 }
 399         }
 400
 401         if (unlikely(!fd->sqid)) {
 402                 struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
 403
 404                 if (cmd->sqe.common.opcode == nvme_admin_async_event) {
 405                         nvme->u.nvme.aen_op = 1;
 406                         atomic_inc(&ha->nvme_active_aen_cnt);
 407                 }
 408         }
 409
 410         /* Build command packet. */
 411         req->current_outstanding_cmd = handle;
 412         req->outstanding_cmds[handle] = sp;
 413         sp->handle = handle;
 414         req->cnt -= req_cnt;
 415
 416         cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
 417         cmd_pkt->handle = make_handle(req->id, handle);
 418
 419         /* Zero out remaining portion of packet. */
 420         clr_ptr = (uint32_t *)cmd_pkt + 2;
 421         memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
 422
 423         cmd_pkt->entry_status = 0;
 424
 425         /* Update entry type to indicate Command NVME IOCB */
 426         cmd_pkt->entry_type = COMMAND_NVME;
 427
 428         /* No data transfer how do we check buffer len == 0?? */
 429         if (fd->io_dir == NVMEFC_FCP_READ) {
 430                 cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
 431                 vha->qla_stats.input_bytes += fd->payload_length;
 432                 vha->qla_stats.input_requests++;
 433         } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
 434                 cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
 435                 if ((vha->flags.nvme_first_burst) &&
 436                     (sp->fcport->nvme_prli_service_param &
 437                         NVME_PRLI_SP_FIRST_BURST)) {
 438                         if ((fd->payload_length <=
 439                             sp->fcport->nvme_first_burst_size) ||
 440                                 (sp->fcport->nvme_first_burst_size == 0))
 441                                 cmd_pkt->control_flags |=
 442                                         cpu_to_le16(CF_NVME_FIRST_BURST_ENABLE);
 443                 }
 444                 vha->qla_stats.output_bytes += fd->payload_length;
 445                 vha->qla_stats.output_requests++;
 446         } else if (fd->io_dir == 0) {
 447                 cmd_pkt->control_flags = 0;
 448         }
 449
 450         /* Set NPORT-ID */
 451         cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
 452         cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
 453         cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
 454         cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
 455         cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
 456
 457         /* NVME RSP IU */
 458         cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
 459         put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address);
 460
 461         /* NVME CNMD IU */
 462         cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
 463         cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(fd->cmddma);
 464
 465         cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
 466         cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
 467
 468         /* One DSD is available in the Command Type NVME IOCB */
 469         avail_dsds = 1;
 470         cur_dsd = &cmd_pkt->nvme_dsd;
 471         sgl = fd->first_sgl;
 472
 473         /* Load data segments */
 474         for_each_sg(sgl, sg, tot_dsds, i) {
 475                 cont_a64_entry_t *cont_pkt;
 476
 477                 /* Allocate additional continuation packets? */
 478                 if (avail_dsds == 0) {
 479                         /*
 480                          * Five DSDs are available in the Continuation
 481                          * Type 1 IOCB.
 482                          */
 483
 484                         /* Adjust ring index */
 485                         req->ring_index++;
 486                         if (req->ring_index == req->length) {
 487                                 req->ring_index = 0;
 488                                 req->ring_ptr = req->ring;
 489                         } else {
 490                                 req->ring_ptr++;
 491                         }
 492                         cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
 493                         put_unaligned_le32(CONTINUE_A64_TYPE,
 494                                            &cont_pkt->entry_type);
 495
 496                         cur_dsd = cont_pkt->dsd;
 497                         avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
 498                 }
 499
 500                 append_dsd64(&cur_dsd, sg);
 501                 avail_dsds--;
 502         }
 503
 504         /* Set total entry count. */
 505         cmd_pkt->entry_count = (uint8_t)req_cnt;
 506         wmb();
 507
 508         /* Adjust ring index. */
 509         req->ring_index++;
 510         if (req->ring_index == req->length) {
 511                 req->ring_index = 0;
 512                 req->ring_ptr = req->ring;
 513         } else {
 514                 req->ring_ptr++;
 515         }
 516
 517         /* Set chip new ring index. */
 518         wrt_reg_dword(req->req_q_in, req->ring_index);
 519
 520 queuing_error:
 521         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 522         return rval;
 523 }
 524
 525 /* Post a command */
 526 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
 527     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 528     struct nvmefc_fcp_req *fd)
 529 {
 530         fc_port_t *fcport;
 531         struct srb_iocb *nvme;
 532         struct scsi_qla_host *vha;
 533         int rval = -ENODEV;
 534         srb_t *sp;
 535         struct qla_qpair *qpair = hw_queue_handle;
 536         struct nvme_private *priv = fd->private;
 537         struct qla_nvme_rport *qla_rport = rport->private;
 538
 539         fcport = qla_rport->fcport;
 540
 541         if (!qpair || !fcport || (qpair && !qpair->fw_started) ||
 542             (fcport && fcport->deleted))
 543                 return rval;
 544
 545         vha = fcport->vha;
 546         /*
 547          * If we know the dev is going away while the transport is still sending
 548          * IO's return busy back to stall the IO Q.  This happens when the
 549          * link goes away and fw hasn't notified us yet, but IO's are being
 550          * returned. If the dev comes back quickly we won't exhaust the IO
 551          * retry count at the core.
 552          */
 553         if (fcport->nvme_flag & NVME_FLAG_RESETTING)
 554                 return -EBUSY;
 555
 556         /* Alloc SRB structure */
 557         sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
 558         if (!sp)
 559                 return -EBUSY;
 560
 561         init_waitqueue_head(&sp->nvme_ls_waitq);
 562         kref_init(&sp->cmd_kref);
 563         spin_lock_init(&priv->cmd_lock);
 564         sp->priv = priv;
 565         priv->sp = sp;
 566         sp->type = SRB_NVME_CMD;
 567         sp->name = "nvme_cmd";
 568         sp->done = qla_nvme_sp_done;
 569         sp->put_fn = qla_nvme_release_fcp_cmd_kref;
 570         sp->qpair = qpair;
 571         sp->vha = vha;
 572         nvme = &sp->u.iocb_cmd;
 573         nvme->u.nvme.desc = fd;
 574
 575         rval = qla2x00_start_nvme_mq(sp);
 576         if (rval != QLA_SUCCESS) {
 577                 ql_log(ql_log_warn, vha, 0x212d,
 578                     "qla2x00_start_nvme_mq failed = %d\n", rval);
 579                 wake_up(&sp->nvme_ls_waitq);
 580                 sp->priv = NULL;
 581                 priv->sp = NULL;
 582                 qla2xxx_rel_qpair_sp(sp->qpair, sp);
 583         }
 584
 585         return rval;
 586 }
 587
 588 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
 589 {
 590         struct scsi_qla_host *vha = lport->private;
 591
 592         ql_log(ql_log_info, vha, 0x210f,
 593             "localport delete of %p completed.\n", vha->nvme_local_port);
 594         vha->nvme_local_port = NULL;
 595         complete(&vha->nvme_del_done);
 596 }
 597
 598 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
 599 {
 600         fc_port_t *fcport;
 601         struct qla_nvme_rport *qla_rport = rport->private;
 602
 603         fcport = qla_rport->fcport;
 604         fcport->nvme_remote_port = NULL;
 605         fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
 606         fcport->nvme_flag &= ~NVME_FLAG_DELETING;
 607         ql_log(ql_log_info, fcport->vha, 0x2110,
 608             "remoteport_delete of %p %8phN completed.\n",
 609             fcport, fcport->port_name);
 610         complete(&fcport->nvme_del_done);
 611 }
 612
 613 static struct nvme_fc_port_template qla_nvme_fc_transport = {
 614         .localport_delete = qla_nvme_localport_delete,
 615         .remoteport_delete = qla_nvme_remoteport_delete,
 616         .create_queue   = qla_nvme_alloc_queue,
 617         .delete_queue   = NULL,
 618         .ls_req         = qla_nvme_ls_req,
 619         .ls_abort       = qla_nvme_ls_abort,
 620         .fcp_io         = qla_nvme_post_cmd,
 621         .fcp_abort      = qla_nvme_fcp_abort,
 622         .max_hw_queues  = 8,
 623         .max_sgl_segments = 1024,
 624         .max_dif_sgl_segments = 64,
 625         .dma_boundary = 0xFFFFFFFF,
 626         .local_priv_sz  = 8,
 627         .remote_priv_sz = sizeof(struct qla_nvme_rport),
 628         .lsrqst_priv_sz = sizeof(struct nvme_private),
 629         .fcprqst_priv_sz = sizeof(struct nvme_private),
 630 };
 631
 632 void qla_nvme_unregister_remote_port(struct fc_port *fcport)
 633 {
 634         int ret;
 635
 636         if (!IS_ENABLED(CONFIG_NVME_FC))
 637                 return;
 638
 639         ql_log(ql_log_warn, NULL, 0x2112,
 640             "%s: unregister remoteport on %p %8phN\n",
 641             __func__, fcport, fcport->port_name);
 642
 643         if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags))
 644                 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
 645
 646         init_completion(&fcport->nvme_del_done);
 647         ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
 648         if (ret)
 649                 ql_log(ql_log_info, fcport->vha, 0x2114,
 650                         "%s: Failed to unregister nvme_remote_port (%d)\n",
 651                             __func__, ret);
 652         wait_for_completion(&fcport->nvme_del_done);
 653 }
 654
 655 void qla_nvme_delete(struct scsi_qla_host *vha)
 656 {
 657         int nv_ret;
 658
 659         if (!IS_ENABLED(CONFIG_NVME_FC))
 660                 return;
 661
 662         if (vha->nvme_local_port) {
 663                 init_completion(&vha->nvme_del_done);
 664                 ql_log(ql_log_info, vha, 0x2116,
 665                         "unregister localport=%p\n",
 666                         vha->nvme_local_port);
 667                 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
 668                 if (nv_ret)
 669                         ql_log(ql_log_info, vha, 0x2115,
 670                             "Unregister of localport failed\n");
 671                 else
 672                         wait_for_completion(&vha->nvme_del_done);
 673         }
 674 }
 675
 676 int qla_nvme_register_hba(struct scsi_qla_host *vha)
 677 {
 678         struct nvme_fc_port_template *tmpl;
 679         struct qla_hw_data *ha;
 680         struct nvme_fc_port_info pinfo;
 681         int ret = EINVAL;
 682
 683         if (!IS_ENABLED(CONFIG_NVME_FC))
 684                 return ret;
 685
 686         ha = vha->hw;
 687         tmpl = &qla_nvme_fc_transport;
 688
 689         WARN_ON(vha->nvme_local_port);
 690         WARN_ON(ha->max_req_queues < 3);
 691
 692         qla_nvme_fc_transport.max_hw_queues =
 693             min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
 694                 (uint8_t)(ha->max_req_queues - 2));
 695
 696         pinfo.node_name = wwn_to_u64(vha->node_name);
 697         pinfo.port_name = wwn_to_u64(vha->port_name);
 698         pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
 699         pinfo.port_id = vha->d_id.b24;
 700
 701         ql_log(ql_log_info, vha, 0xffff,
 702             "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
 703             pinfo.node_name, pinfo.port_name, pinfo.port_id);
 704         qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
 705
 706         ret = nvme_fc_register_localport(&pinfo, tmpl,
 707             get_device(&ha->pdev->dev), &vha->nvme_local_port);
 708         if (ret) {
 709                 ql_log(ql_log_warn, vha, 0xffff,
 710                     "register_localport failed: ret=%x\n", ret);
 711         } else {
 712                 vha->nvme_local_port->private = vha;
 713         }
 714
 715         return ret;
 716 }