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         if (atomic_read(&fcport->state) == FCS_ONLINE)
  40                 return 0;
  41
  42         qla2x00_set_fcport_state(fcport, FCS_ONLINE);
  43
  44         fcport->nvme_flag &= ~NVME_FLAG_RESETTING;
  45
  46         memset(&req, 0, sizeof(struct nvme_fc_port_info));
  47         req.port_name = wwn_to_u64(fcport->port_name);
  48         req.node_name = wwn_to_u64(fcport->node_name);
  49         req.port_role = 0;
  50         req.dev_loss_tmo = NVME_FC_DEV_LOSS_TMO;
  51
  52         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR)
  53                 req.port_role = FC_PORT_ROLE_NVME_INITIATOR;
  54
  55         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_TARGET)
  56                 req.port_role |= FC_PORT_ROLE_NVME_TARGET;
  57
  58         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_DISCOVERY)
  59                 req.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
  60
  61         req.port_id = fcport->d_id.b24;
  62
  63         ql_log(ql_log_info, vha, 0x2102,
  64             "%s: traddr=nn-0x%016llx:pn-0x%016llx PortID:%06x\n",
  65             __func__, req.node_name, req.port_name,
  66             req.port_id);
  67
  68         ret = nvme_fc_register_remoteport(vha->nvme_local_port, &req,
  69             &fcport->nvme_remote_port);
  70         if (ret) {
  71                 ql_log(ql_log_warn, vha, 0x212e,
  72                     "Failed to register remote port. Transport returned %d\n",
  73                     ret);
  74                 return ret;
  75         }
  76
  77         rport = fcport->nvme_remote_port->private;
  78         rport->fcport = fcport;
  79
  80         fcport->nvme_flag |= NVME_FLAG_REGISTERED;
  81         return 0;
  82 }
  83
  84 /* Allocate a queue for NVMe traffic */
  85 static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport,
  86     unsigned int qidx, u16 qsize, void **handle)
  87 {
  88         struct scsi_qla_host *vha;
  89         struct qla_hw_data *ha;
  90         struct qla_qpair *qpair;
  91
  92         /* Map admin queue and 1st IO queue to index 0 */
  93         if (qidx)
  94                 qidx--;
  95
  96         vha = (struct scsi_qla_host *)lport->private;
  97         ha = vha->hw;
  98
  99         ql_log(ql_log_info, vha, 0x2104,
 100             "%s: handle %p, idx =%d, qsize %d\n",
 101             __func__, handle, qidx, qsize);
 102
 103         if (qidx > qla_nvme_fc_transport.max_hw_queues) {
 104                 ql_log(ql_log_warn, vha, 0x212f,
 105                     "%s: Illegal qidx=%d. Max=%d\n",
 106                     __func__, qidx, qla_nvme_fc_transport.max_hw_queues);
 107                 return -EINVAL;
 108         }
 109
 110         if (ha->queue_pair_map[qidx]) {
 111                 *handle = ha->queue_pair_map[qidx];
 112                 ql_log(ql_log_info, vha, 0x2121,
 113                     "Returning existing qpair of %p for idx=%x\n",
 114                     *handle, qidx);
 115                 return 0;
 116         }
 117
 118         qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
 119         if (qpair == NULL) {
 120                 ql_log(ql_log_warn, vha, 0x2122,
 121                     "Failed to allocate qpair\n");
 122                 return -EINVAL;
 123         }
 124         *handle = qpair;
 125
 126         return 0;
 127 }
 128
 129 static void qla_nvme_release_fcp_cmd_kref(struct kref *kref)
 130 {
 131         struct srb *sp = container_of(kref, struct srb, cmd_kref);
 132         struct nvme_private *priv = (struct nvme_private *)sp->priv;
 133         struct nvmefc_fcp_req *fd;
 134         struct srb_iocb *nvme;
 135         unsigned long flags;
 136
 137         if (!priv)
 138                 goto out;
 139
 140         nvme = &sp->u.iocb_cmd;
 141         fd = nvme->u.nvme.desc;
 142
 143         spin_lock_irqsave(&priv->cmd_lock, flags);
 144         priv->sp = NULL;
 145         sp->priv = NULL;
 146         if (priv->comp_status == QLA_SUCCESS) {
 147                 fd->rcv_rsplen = nvme->u.nvme.rsp_pyld_len;
 148         } else {
 149                 fd->rcv_rsplen = 0;
 150                 fd->transferred_length = 0;
 151         }
 152         fd->status = 0;
 153         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 154
 155         fd->done(fd);
 156 out:
 157         qla2xxx_rel_qpair_sp(sp->qpair, sp);
 158 }
 159
 160 static void qla_nvme_ls_unmap(struct srb *sp, struct nvmefc_ls_req *fd)
 161 {
 162         if (sp->flags & SRB_DMA_VALID) {
 163                 struct srb_iocb *nvme = &sp->u.iocb_cmd;
 164                 struct qla_hw_data *ha = sp->fcport->vha->hw;
 165
 166                 dma_unmap_single(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
 167                                  fd->rqstlen, DMA_TO_DEVICE);
 168                 sp->flags &= ~SRB_DMA_VALID;
 169         }
 170 }
 171
 172 static void qla_nvme_release_ls_cmd_kref(struct kref *kref)
 173 {
 174         struct srb *sp = container_of(kref, struct srb, cmd_kref);
 175         struct nvme_private *priv = (struct nvme_private *)sp->priv;
 176         struct nvmefc_ls_req *fd;
 177         unsigned long flags;
 178
 179         if (!priv)
 180                 goto out;
 181
 182         spin_lock_irqsave(&priv->cmd_lock, flags);
 183         priv->sp = NULL;
 184         sp->priv = NULL;
 185         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 186
 187         fd = priv->fd;
 188
 189         qla_nvme_ls_unmap(sp, fd);
 190         fd->done(fd, priv->comp_status);
 191 out:
 192         qla2x00_rel_sp(sp);
 193 }
 194
 195 static void qla_nvme_ls_complete(struct work_struct *work)
 196 {
 197         struct nvme_private *priv =
 198                 container_of(work, struct nvme_private, ls_work);
 199
 200         kref_put(&priv->sp->cmd_kref, qla_nvme_release_ls_cmd_kref);
 201 }
 202
 203 static void qla_nvme_sp_ls_done(srb_t *sp, int res)
 204 {
 205         struct nvme_private *priv = sp->priv;
 206
 207         if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0))
 208                 return;
 209
 210         if (res)
 211                 res = -EINVAL;
 212
 213         priv->comp_status = res;
 214         INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
 215         schedule_work(&priv->ls_work);
 216 }
 217
 218 /* it assumed that QPair lock is held. */
 219 static void qla_nvme_sp_done(srb_t *sp, int res)
 220 {
 221         struct nvme_private *priv = sp->priv;
 222
 223         priv->comp_status = res;
 224         kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref);
 225
 226         return;
 227 }
 228
 229 static void qla_nvme_abort_work(struct work_struct *work)
 230 {
 231         struct nvme_private *priv =
 232                 container_of(work, struct nvme_private, abort_work);
 233         srb_t *sp = priv->sp;
 234         fc_port_t *fcport = sp->fcport;
 235         struct qla_hw_data *ha = fcport->vha->hw;
 236         int rval;
 237
 238         ql_dbg(ql_dbg_io, fcport->vha, 0xffff,
 239                "%s called for sp=%p, hndl=%x on fcport=%p deleted=%d\n",
 240                __func__, sp, sp->handle, fcport, fcport->deleted);
 241
 242         if (!ha->flags.fw_started && fcport->deleted)
 243                 goto out;
 244
 245         if (ha->flags.host_shutting_down) {
 246                 ql_log(ql_log_info, sp->fcport->vha, 0xffff,
 247                     "%s Calling done on sp: %p, type: 0x%x\n",
 248                     __func__, sp, sp->type);
 249                 sp->done(sp, 0);
 250                 goto out;
 251         }
 252
 253         rval = ha->isp_ops->abort_command(sp);
 254
 255         ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
 256             "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
 257             __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
 258             sp, sp->handle, fcport, rval);
 259
 260 out:
 261         /* kref_get was done before work was schedule. */
 262         kref_put(&sp->cmd_kref, sp->put_fn);
 263 }
 264
 265 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
 266     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 267 {
 268         struct nvme_private *priv = fd->private;
 269         unsigned long flags;
 270
 271         spin_lock_irqsave(&priv->cmd_lock, flags);
 272         if (!priv->sp) {
 273                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 274                 return;
 275         }
 276
 277         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 278                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 279                 return;
 280         }
 281         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 282
 283         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 284         schedule_work(&priv->abort_work);
 285 }
 286
 287 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
 288     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 289 {
 290         struct qla_nvme_rport *qla_rport = rport->private;
 291         fc_port_t *fcport = qla_rport->fcport;
 292         struct srb_iocb   *nvme;
 293         struct nvme_private *priv = fd->private;
 294         struct scsi_qla_host *vha;
 295         int     rval = QLA_FUNCTION_FAILED;
 296         struct qla_hw_data *ha;
 297         srb_t           *sp;
 298
 299
 300         if (!fcport || (fcport && fcport->deleted))
 301                 return rval;
 302
 303         vha = fcport->vha;
 304         ha = vha->hw;
 305
 306         if (!ha->flags.fw_started)
 307                 return rval;
 308
 309         /* Alloc SRB structure */
 310         sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
 311         if (!sp)
 312                 return rval;
 313
 314         sp->type = SRB_NVME_LS;
 315         sp->name = "nvme_ls";
 316         sp->done = qla_nvme_sp_ls_done;
 317         sp->put_fn = qla_nvme_release_ls_cmd_kref;
 318         sp->priv = (void *)priv;
 319         priv->sp = sp;
 320         kref_init(&sp->cmd_kref);
 321         spin_lock_init(&priv->cmd_lock);
 322         nvme = &sp->u.iocb_cmd;
 323         priv->fd = fd;
 324         nvme->u.nvme.desc = fd;
 325         nvme->u.nvme.dir = 0;
 326         nvme->u.nvme.dl = 0;
 327         nvme->u.nvme.cmd_len = fd->rqstlen;
 328         nvme->u.nvme.rsp_len = fd->rsplen;
 329         nvme->u.nvme.rsp_dma = fd->rspdma;
 330         nvme->u.nvme.timeout_sec = fd->timeout;
 331         nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
 332             fd->rqstlen, DMA_TO_DEVICE);
 333         dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
 334             fd->rqstlen, DMA_TO_DEVICE);
 335
 336         sp->flags |= SRB_DMA_VALID;
 337
 338         rval = qla2x00_start_sp(sp);
 339         if (rval != QLA_SUCCESS) {
 340                 ql_log(ql_log_warn, vha, 0x700e,
 341                     "qla2x00_start_sp failed = %d\n", rval);
 342                 wake_up(&sp->nvme_ls_waitq);
 343                 sp->priv = NULL;
 344                 priv->sp = NULL;
 345                 qla_nvme_ls_unmap(sp, fd);
 346                 qla2x00_rel_sp(sp);
 347                 return rval;
 348         }
 349
 350         return rval;
 351 }
 352
 353 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
 354     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 355     struct nvmefc_fcp_req *fd)
 356 {
 357         struct nvme_private *priv = fd->private;
 358         unsigned long flags;
 359
 360         spin_lock_irqsave(&priv->cmd_lock, flags);
 361         if (!priv->sp) {
 362                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 363                 return;
 364         }
 365         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 366                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 367                 return;
 368         }
 369         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 370
 371         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 372         schedule_work(&priv->abort_work);
 373 }
 374
 375 static inline int qla2x00_start_nvme_mq(srb_t *sp)
 376 {
 377         unsigned long   flags;
 378         uint32_t        *clr_ptr;
 379         uint32_t        handle;
 380         struct cmd_nvme *cmd_pkt;
 381         uint16_t        cnt, i;
 382         uint16_t        req_cnt;
 383         uint16_t        tot_dsds;
 384         uint16_t        avail_dsds;
 385         struct dsd64    *cur_dsd;
 386         struct req_que *req = NULL;
 387         struct scsi_qla_host *vha = sp->fcport->vha;
 388         struct qla_hw_data *ha = vha->hw;
 389         struct qla_qpair *qpair = sp->qpair;
 390         struct srb_iocb *nvme = &sp->u.iocb_cmd;
 391         struct scatterlist *sgl, *sg;
 392         struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
 393         uint32_t        rval = QLA_SUCCESS;
 394
 395         /* Setup qpair pointers */
 396         req = qpair->req;
 397         tot_dsds = fd->sg_cnt;
 398
 399         /* Acquire qpair specific lock */
 400         spin_lock_irqsave(&qpair->qp_lock, flags);
 401
 402         handle = qla2xxx_get_next_handle(req);
 403         if (handle == 0) {
 404                 rval = -EBUSY;
 405                 goto queuing_error;
 406         }
 407         req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
 408         if (req->cnt < (req_cnt + 2)) {
 409                 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
 410                     RD_REG_DWORD_RELAXED(req->req_q_out);
 411
 412                 if (req->ring_index < cnt)
 413                         req->cnt = cnt - req->ring_index;
 414                 else
 415                         req->cnt = req->length - (req->ring_index - cnt);
 416
 417                 if (req->cnt < (req_cnt + 2)){
 418                         rval = -EBUSY;
 419                         goto queuing_error;
 420                 }
 421         }
 422
 423         if (unlikely(!fd->sqid)) {
 424                 struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
 425
 426                 if (cmd->sqe.common.opcode == nvme_admin_async_event) {
 427                         nvme->u.nvme.aen_op = 1;
 428                         atomic_inc(&ha->nvme_active_aen_cnt);
 429                 }
 430         }
 431
 432         /* Build command packet. */
 433         req->current_outstanding_cmd = handle;
 434         req->outstanding_cmds[handle] = sp;
 435         sp->handle = handle;
 436         req->cnt -= req_cnt;
 437
 438         cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
 439         cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
 440
 441         /* Zero out remaining portion of packet. */
 442         clr_ptr = (uint32_t *)cmd_pkt + 2;
 443         memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
 444
 445         cmd_pkt->entry_status = 0;
 446
 447         /* Update entry type to indicate Command NVME IOCB */
 448         cmd_pkt->entry_type = COMMAND_NVME;
 449
 450         /* No data transfer how do we check buffer len == 0?? */
 451         if (fd->io_dir == NVMEFC_FCP_READ) {
 452                 cmd_pkt->control_flags = CF_READ_DATA;
 453                 vha->qla_stats.input_bytes += fd->payload_length;
 454                 vha->qla_stats.input_requests++;
 455         } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
 456                 cmd_pkt->control_flags = CF_WRITE_DATA;
 457                 if ((vha->flags.nvme_first_burst) &&
 458                     (sp->fcport->nvme_prli_service_param &
 459                         NVME_PRLI_SP_FIRST_BURST)) {
 460                         if ((fd->payload_length <=
 461                             sp->fcport->nvme_first_burst_size) ||
 462                                 (sp->fcport->nvme_first_burst_size == 0))
 463                                 cmd_pkt->control_flags |=
 464                                     CF_NVME_FIRST_BURST_ENABLE;
 465                 }
 466                 vha->qla_stats.output_bytes += fd->payload_length;
 467                 vha->qla_stats.output_requests++;
 468         } else if (fd->io_dir == 0) {
 469                 cmd_pkt->control_flags = 0;
 470         }
 471
 472         /* Set NPORT-ID */
 473         cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
 474         cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
 475         cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
 476         cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
 477         cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
 478
 479         /* NVME RSP IU */
 480         cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
 481         put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address);
 482
 483         /* NVME CNMD IU */
 484         cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
 485         cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(fd->cmddma);
 486
 487         cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
 488         cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
 489
 490         /* One DSD is available in the Command Type NVME IOCB */
 491         avail_dsds = 1;
 492         cur_dsd = &cmd_pkt->nvme_dsd;
 493         sgl = fd->first_sgl;
 494
 495         /* Load data segments */
 496         for_each_sg(sgl, sg, tot_dsds, i) {
 497                 cont_a64_entry_t *cont_pkt;
 498
 499                 /* Allocate additional continuation packets? */
 500                 if (avail_dsds == 0) {
 501                         /*
 502                          * Five DSDs are available in the Continuation
 503                          * Type 1 IOCB.
 504                          */
 505
 506                         /* Adjust ring index */
 507                         req->ring_index++;
 508                         if (req->ring_index == req->length) {
 509                                 req->ring_index = 0;
 510                                 req->ring_ptr = req->ring;
 511                         } else {
 512                                 req->ring_ptr++;
 513                         }
 514                         cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
 515                         put_unaligned_le32(CONTINUE_A64_TYPE,
 516                                            &cont_pkt->entry_type);
 517
 518                         cur_dsd = cont_pkt->dsd;
 519                         avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
 520                 }
 521
 522                 append_dsd64(&cur_dsd, sg);
 523                 avail_dsds--;
 524         }
 525
 526         /* Set total entry count. */
 527         cmd_pkt->entry_count = (uint8_t)req_cnt;
 528         wmb();
 529
 530         /* Adjust ring index. */
 531         req->ring_index++;
 532         if (req->ring_index == req->length) {
 533                 req->ring_index = 0;
 534                 req->ring_ptr = req->ring;
 535         } else {
 536                 req->ring_ptr++;
 537         }
 538
 539         /* Set chip new ring index. */
 540         WRT_REG_DWORD(req->req_q_in, req->ring_index);
 541
 542 queuing_error:
 543         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 544         return rval;
 545 }
 546
 547 /* Post a command */
 548 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
 549     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 550     struct nvmefc_fcp_req *fd)
 551 {
 552         fc_port_t *fcport;
 553         struct srb_iocb *nvme;
 554         struct scsi_qla_host *vha;
 555         int rval = -ENODEV;
 556         srb_t *sp;
 557         struct qla_qpair *qpair = hw_queue_handle;
 558         struct nvme_private *priv = fd->private;
 559         struct qla_nvme_rport *qla_rport = rport->private;
 560
 561         if (!priv) {
 562                 /* nvme association has been torn down */
 563                 return rval;
 564         }
 565
 566         fcport = qla_rport->fcport;
 567
 568         if (!qpair || !fcport || (qpair && !qpair->fw_started) ||
 569             (fcport && fcport->deleted))
 570                 return rval;
 571
 572         vha = fcport->vha;
 573         /*
 574          * If we know the dev is going away while the transport is still sending
 575          * IO's return busy back to stall the IO Q.  This happens when the
 576          * link goes away and fw hasn't notified us yet, but IO's are being
 577          * returned. If the dev comes back quickly we won't exhaust the IO
 578          * retry count at the core.
 579          */
 580         if (fcport->nvme_flag & NVME_FLAG_RESETTING)
 581                 return -EBUSY;
 582
 583         /* Alloc SRB structure */
 584         sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
 585         if (!sp)
 586                 return -EBUSY;
 587
 588         init_waitqueue_head(&sp->nvme_ls_waitq);
 589         kref_init(&sp->cmd_kref);
 590         spin_lock_init(&priv->cmd_lock);
 591         sp->priv = (void *)priv;
 592         priv->sp = sp;
 593         sp->type = SRB_NVME_CMD;
 594         sp->name = "nvme_cmd";
 595         sp->done = qla_nvme_sp_done;
 596         sp->put_fn = qla_nvme_release_fcp_cmd_kref;
 597         sp->qpair = qpair;
 598         sp->vha = vha;
 599         nvme = &sp->u.iocb_cmd;
 600         nvme->u.nvme.desc = fd;
 601
 602         rval = qla2x00_start_nvme_mq(sp);
 603         if (rval != QLA_SUCCESS) {
 604                 ql_log(ql_log_warn, vha, 0x212d,
 605                     "qla2x00_start_nvme_mq failed = %d\n", rval);
 606                 wake_up(&sp->nvme_ls_waitq);
 607                 sp->priv = NULL;
 608                 priv->sp = NULL;
 609                 qla2xxx_rel_qpair_sp(sp->qpair, sp);
 610         }
 611
 612         return rval;
 613 }
 614
 615 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
 616 {
 617         struct scsi_qla_host *vha = lport->private;
 618
 619         ql_log(ql_log_info, vha, 0x210f,
 620             "localport delete of %p completed.\n", vha->nvme_local_port);
 621         vha->nvme_local_port = NULL;
 622         complete(&vha->nvme_del_done);
 623 }
 624
 625 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
 626 {
 627         fc_port_t *fcport;
 628         struct qla_nvme_rport *qla_rport = rport->private;
 629
 630         fcport = qla_rport->fcport;
 631         fcport->nvme_remote_port = NULL;
 632         fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
 633         fcport->nvme_flag &= ~NVME_FLAG_DELETING;
 634         ql_log(ql_log_info, fcport->vha, 0x2110,
 635             "remoteport_delete of %p %8phN completed.\n",
 636             fcport, fcport->port_name);
 637         complete(&fcport->nvme_del_done);
 638 }
 639
 640 static struct nvme_fc_port_template qla_nvme_fc_transport = {
 641         .localport_delete = qla_nvme_localport_delete,
 642         .remoteport_delete = qla_nvme_remoteport_delete,
 643         .create_queue   = qla_nvme_alloc_queue,
 644         .delete_queue   = NULL,
 645         .ls_req         = qla_nvme_ls_req,
 646         .ls_abort       = qla_nvme_ls_abort,
 647         .fcp_io         = qla_nvme_post_cmd,
 648         .fcp_abort      = qla_nvme_fcp_abort,
 649         .max_hw_queues  = 8,
 650         .max_sgl_segments = 1024,
 651         .max_dif_sgl_segments = 64,
 652         .dma_boundary = 0xFFFFFFFF,
 653         .local_priv_sz  = 8,
 654         .remote_priv_sz = sizeof(struct qla_nvme_rport),
 655         .lsrqst_priv_sz = sizeof(struct nvme_private),
 656         .fcprqst_priv_sz = sizeof(struct nvme_private),
 657 };
 658
 659 void qla_nvme_unregister_remote_port(struct fc_port *fcport)
 660 {
 661         int ret;
 662
 663         if (!IS_ENABLED(CONFIG_NVME_FC))
 664                 return;
 665
 666         ql_log(ql_log_warn, NULL, 0x2112,
 667             "%s: unregister remoteport on %p %8phN\n",
 668             __func__, fcport, fcport->port_name);
 669
 670         if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags))
 671                 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
 672
 673         init_completion(&fcport->nvme_del_done);
 674         ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
 675         if (ret)
 676                 ql_log(ql_log_info, fcport->vha, 0x2114,
 677                         "%s: Failed to unregister nvme_remote_port (%d)\n",
 678                             __func__, ret);
 679         wait_for_completion(&fcport->nvme_del_done);
 680 }
 681
 682 void qla_nvme_delete(struct scsi_qla_host *vha)
 683 {
 684         int nv_ret;
 685
 686         if (!IS_ENABLED(CONFIG_NVME_FC))
 687                 return;
 688
 689         if (vha->nvme_local_port) {
 690                 init_completion(&vha->nvme_del_done);
 691                 ql_log(ql_log_info, vha, 0x2116,
 692                         "unregister localport=%p\n",
 693                         vha->nvme_local_port);
 694                 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
 695                 if (nv_ret)
 696                         ql_log(ql_log_info, vha, 0x2115,
 697                             "Unregister of localport failed\n");
 698                 else
 699                         wait_for_completion(&vha->nvme_del_done);
 700         }
 701 }
 702
 703 int qla_nvme_register_hba(struct scsi_qla_host *vha)
 704 {
 705         struct nvme_fc_port_template *tmpl;
 706         struct qla_hw_data *ha;
 707         struct nvme_fc_port_info pinfo;
 708         int ret = -EINVAL;
 709
 710         if (!IS_ENABLED(CONFIG_NVME_FC))
 711                 return ret;
 712
 713         ha = vha->hw;
 714         tmpl = &qla_nvme_fc_transport;
 715
 716         WARN_ON(vha->nvme_local_port);
 717         WARN_ON(ha->max_req_queues < 3);
 718
 719         qla_nvme_fc_transport.max_hw_queues =
 720             min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
 721                 (uint8_t)(ha->max_req_queues - 2));
 722
 723         pinfo.node_name = wwn_to_u64(vha->node_name);
 724         pinfo.port_name = wwn_to_u64(vha->port_name);
 725         pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
 726         pinfo.port_id = vha->d_id.b24;
 727
 728         ql_log(ql_log_info, vha, 0xffff,
 729             "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
 730             pinfo.node_name, pinfo.port_name, pinfo.port_id);
 731         qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
 732
 733         ret = nvme_fc_register_localport(&pinfo, tmpl,
 734             get_device(&ha->pdev->dev), &vha->nvme_local_port);
 735         if (ret) {
 736                 ql_log(ql_log_warn, vha, 0xffff,
 737                     "register_localport failed: ret=%x\n", ret);
 738         } else {
 739                 vha->nvme_local_port->private = vha;
 740         }
 741
 742         return ret;
 743 }