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 = 0;
  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         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_SLER)
  73                 ql_log(ql_log_info, vha, 0x212a,
  74                        "PortID:%06x Supports SLER\n", req.port_id);
  75
  76         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_PI_CTRL)
  77                 ql_log(ql_log_info, vha, 0x212b,
  78                        "PortID:%06x Supports PI control\n", req.port_id);
  79
  80         rport = fcport->nvme_remote_port->private;
  81         rport->fcport = fcport;
  82
  83         fcport->nvme_flag |= NVME_FLAG_REGISTERED;
  84         return 0;
  85 }
  86
  87 /* Allocate a queue for NVMe traffic */
  88 static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport,
  89     unsigned int qidx, u16 qsize, void **handle)
  90 {
  91         struct scsi_qla_host *vha;
  92         struct qla_hw_data *ha;
  93         struct qla_qpair *qpair;
  94
  95         if (!qidx)
  96                 qidx++;
  97
  98         vha = (struct scsi_qla_host *)lport->private;
  99         ha = vha->hw;
 100
 101         ql_log(ql_log_info, vha, 0x2104,
 102             "%s: handle %p, idx =%d, qsize %d\n",
 103             __func__, handle, qidx, qsize);
 104
 105         if (qidx > qla_nvme_fc_transport.max_hw_queues) {
 106                 ql_log(ql_log_warn, vha, 0x212f,
 107                     "%s: Illegal qidx=%d. Max=%d\n",
 108                     __func__, qidx, qla_nvme_fc_transport.max_hw_queues);
 109                 return -EINVAL;
 110         }
 111
 112         if (ha->queue_pair_map[qidx]) {
 113                 *handle = ha->queue_pair_map[qidx];
 114                 ql_log(ql_log_info, vha, 0x2121,
 115                     "Returning existing qpair of %p for idx=%x\n",
 116                     *handle, qidx);
 117                 return 0;
 118         }
 119
 120         qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
 121         if (qpair == NULL) {
 122                 ql_log(ql_log_warn, vha, 0x2122,
 123                     "Failed to allocate qpair\n");
 124                 return -EINVAL;
 125         }
 126         *handle = qpair;
 127
 128         return 0;
 129 }
 130
 131 static void qla_nvme_release_fcp_cmd_kref(struct kref *kref)
 132 {
 133         struct srb *sp = container_of(kref, struct srb, cmd_kref);
 134         struct nvme_private *priv = (struct nvme_private *)sp->priv;
 135         struct nvmefc_fcp_req *fd;
 136         struct srb_iocb *nvme;
 137         unsigned long flags;
 138
 139         if (!priv)
 140                 goto out;
 141
 142         nvme = &sp->u.iocb_cmd;
 143         fd = nvme->u.nvme.desc;
 144
 145         spin_lock_irqsave(&priv->cmd_lock, flags);
 146         priv->sp = NULL;
 147         sp->priv = NULL;
 148         if (priv->comp_status == QLA_SUCCESS) {
 149                 fd->rcv_rsplen = le16_to_cpu(nvme->u.nvme.rsp_pyld_len);
 150                 fd->status = NVME_SC_SUCCESS;
 151         } else {
 152                 fd->rcv_rsplen = 0;
 153                 fd->transferred_length = 0;
 154                 fd->status = NVME_SC_INTERNAL;
 155         }
 156         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 157
 158         fd->done(fd);
 159 out:
 160         qla2xxx_rel_qpair_sp(sp->qpair, sp);
 161 }
 162
 163 static void qla_nvme_release_ls_cmd_kref(struct kref *kref)
 164 {
 165         struct srb *sp = container_of(kref, struct srb, cmd_kref);
 166         struct nvme_private *priv = (struct nvme_private *)sp->priv;
 167         struct nvmefc_ls_req *fd;
 168         unsigned long flags;
 169
 170         if (!priv)
 171                 goto out;
 172
 173         spin_lock_irqsave(&priv->cmd_lock, flags);
 174         priv->sp = NULL;
 175         sp->priv = NULL;
 176         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 177
 178         fd = priv->fd;
 179         fd->done(fd, priv->comp_status);
 180 out:
 181         qla2x00_rel_sp(sp);
 182 }
 183
 184 static void qla_nvme_ls_complete(struct work_struct *work)
 185 {
 186         struct nvme_private *priv =
 187                 container_of(work, struct nvme_private, ls_work);
 188
 189         kref_put(&priv->sp->cmd_kref, qla_nvme_release_ls_cmd_kref);
 190 }
 191
 192 static void qla_nvme_sp_ls_done(srb_t *sp, int res)
 193 {
 194         struct nvme_private *priv = sp->priv;
 195
 196         if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0))
 197                 return;
 198
 199         if (res)
 200                 res = -EINVAL;
 201
 202         priv->comp_status = res;
 203         INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
 204         schedule_work(&priv->ls_work);
 205 }
 206
 207 /* it assumed that QPair lock is held. */
 208 static void qla_nvme_sp_done(srb_t *sp, int res)
 209 {
 210         struct nvme_private *priv = sp->priv;
 211
 212         priv->comp_status = res;
 213         kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref);
 214
 215         return;
 216 }
 217
 218 static void qla_nvme_abort_work(struct work_struct *work)
 219 {
 220         struct nvme_private *priv =
 221                 container_of(work, struct nvme_private, abort_work);
 222         srb_t *sp = priv->sp;
 223         fc_port_t *fcport = sp->fcport;
 224         struct qla_hw_data *ha = fcport->vha->hw;
 225         int rval;
 226
 227         ql_dbg(ql_dbg_io, fcport->vha, 0xffff,
 228                "%s called for sp=%p, hndl=%x on fcport=%p deleted=%d\n",
 229                __func__, sp, sp->handle, fcport, fcport->deleted);
 230
 231         if (!ha->flags.fw_started && fcport->deleted)
 232                 goto out;
 233
 234         if (ha->flags.host_shutting_down) {
 235                 ql_log(ql_log_info, sp->fcport->vha, 0xffff,
 236                     "%s Calling done on sp: %p, type: 0x%x\n",
 237                     __func__, sp, sp->type);
 238                 sp->done(sp, 0);
 239                 goto out;
 240         }
 241
 242         rval = ha->isp_ops->abort_command(sp);
 243
 244         ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
 245             "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
 246             __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
 247             sp, sp->handle, fcport, rval);
 248
 249 out:
 250         /* kref_get was done before work was schedule. */
 251         kref_put(&sp->cmd_kref, sp->put_fn);
 252 }
 253
 254 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
 255     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 256 {
 257         struct nvme_private *priv = fd->private;
 258         unsigned long flags;
 259
 260         spin_lock_irqsave(&priv->cmd_lock, flags);
 261         if (!priv->sp) {
 262                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 263                 return;
 264         }
 265
 266         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 267                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 268                 return;
 269         }
 270         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 271
 272         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 273         schedule_work(&priv->abort_work);
 274 }
 275
 276 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
 277     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 278 {
 279         struct qla_nvme_rport *qla_rport = rport->private;
 280         fc_port_t *fcport = qla_rport->fcport;
 281         struct srb_iocb   *nvme;
 282         struct nvme_private *priv = fd->private;
 283         struct scsi_qla_host *vha;
 284         int     rval = QLA_FUNCTION_FAILED;
 285         struct qla_hw_data *ha;
 286         srb_t           *sp;
 287
 288
 289         if (!fcport || (fcport && fcport->deleted))
 290                 return rval;
 291
 292         vha = fcport->vha;
 293         ha = vha->hw;
 294
 295         if (!ha->flags.fw_started)
 296                 return rval;
 297
 298         /* Alloc SRB structure */
 299         sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
 300         if (!sp)
 301                 return rval;
 302
 303         sp->type = SRB_NVME_LS;
 304         sp->name = "nvme_ls";
 305         sp->done = qla_nvme_sp_ls_done;
 306         sp->put_fn = qla_nvme_release_ls_cmd_kref;
 307         sp->priv = priv;
 308         priv->sp = sp;
 309         kref_init(&sp->cmd_kref);
 310         spin_lock_init(&priv->cmd_lock);
 311         nvme = &sp->u.iocb_cmd;
 312         priv->fd = fd;
 313         nvme->u.nvme.desc = fd;
 314         nvme->u.nvme.dir = 0;
 315         nvme->u.nvme.dl = 0;
 316         nvme->u.nvme.cmd_len = fd->rqstlen;
 317         nvme->u.nvme.rsp_len = fd->rsplen;
 318         nvme->u.nvme.rsp_dma = fd->rspdma;
 319         nvme->u.nvme.timeout_sec = fd->timeout;
 320         nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
 321             fd->rqstlen, DMA_TO_DEVICE);
 322         dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
 323             fd->rqstlen, DMA_TO_DEVICE);
 324
 325         rval = qla2x00_start_sp(sp);
 326         if (rval != QLA_SUCCESS) {
 327                 ql_log(ql_log_warn, vha, 0x700e,
 328                     "qla2x00_start_sp failed = %d\n", rval);
 329                 wake_up(&sp->nvme_ls_waitq);
 330                 sp->priv = NULL;
 331                 priv->sp = NULL;
 332                 qla2x00_rel_sp(sp);
 333                 return rval;
 334         }
 335
 336         return rval;
 337 }
 338
 339 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
 340     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 341     struct nvmefc_fcp_req *fd)
 342 {
 343         struct nvme_private *priv = fd->private;
 344         unsigned long flags;
 345
 346         spin_lock_irqsave(&priv->cmd_lock, flags);
 347         if (!priv->sp) {
 348                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 349                 return;
 350         }
 351         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 352                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 353                 return;
 354         }
 355         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 356
 357         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 358         schedule_work(&priv->abort_work);
 359 }
 360
 361 static inline int qla2x00_start_nvme_mq(srb_t *sp)
 362 {
 363         unsigned long   flags;
 364         uint32_t        *clr_ptr;
 365         uint32_t        handle;
 366         struct cmd_nvme *cmd_pkt;
 367         uint16_t        cnt, i;
 368         uint16_t        req_cnt;
 369         uint16_t        tot_dsds;
 370         uint16_t        avail_dsds;
 371         struct dsd64    *cur_dsd;
 372         struct req_que *req = NULL;
 373         struct scsi_qla_host *vha = sp->fcport->vha;
 374         struct qla_hw_data *ha = vha->hw;
 375         struct qla_qpair *qpair = sp->qpair;
 376         struct srb_iocb *nvme = &sp->u.iocb_cmd;
 377         struct scatterlist *sgl, *sg;
 378         struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
 379         struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
 380         uint32_t        rval = QLA_SUCCESS;
 381
 382         /* Setup qpair pointers */
 383         req = qpair->req;
 384         tot_dsds = fd->sg_cnt;
 385
 386         /* Acquire qpair specific lock */
 387         spin_lock_irqsave(&qpair->qp_lock, flags);
 388
 389         handle = qla2xxx_get_next_handle(req);
 390         if (handle == 0) {
 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                 if (cmd->sqe.common.opcode == nvme_admin_async_event) {
 412                         nvme->u.nvme.aen_op = 1;
 413                         atomic_inc(&ha->nvme_active_aen_cnt);
 414                 }
 415         }
 416
 417         /* Build command packet. */
 418         req->current_outstanding_cmd = handle;
 419         req->outstanding_cmds[handle] = sp;
 420         sp->handle = handle;
 421         req->cnt -= req_cnt;
 422
 423         cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
 424         cmd_pkt->handle = make_handle(req->id, handle);
 425
 426         /* Zero out remaining portion of packet. */
 427         clr_ptr = (uint32_t *)cmd_pkt + 2;
 428         memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
 429
 430         cmd_pkt->entry_status = 0;
 431
 432         /* Update entry type to indicate Command NVME IOCB */
 433         cmd_pkt->entry_type = COMMAND_NVME;
 434
 435         /* No data transfer how do we check buffer len == 0?? */
 436         if (fd->io_dir == NVMEFC_FCP_READ) {
 437                 cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
 438                 qpair->counters.input_bytes += fd->payload_length;
 439                 qpair->counters.input_requests++;
 440         } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
 441                 cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
 442                 if ((vha->flags.nvme_first_burst) &&
 443                     (sp->fcport->nvme_prli_service_param &
 444                         NVME_PRLI_SP_FIRST_BURST)) {
 445                         if ((fd->payload_length <=
 446                             sp->fcport->nvme_first_burst_size) ||
 447                                 (sp->fcport->nvme_first_burst_size == 0))
 448                                 cmd_pkt->control_flags |=
 449                                         cpu_to_le16(CF_NVME_FIRST_BURST_ENABLE);
 450                 }
 451                 qpair->counters.output_bytes += fd->payload_length;
 452                 qpair->counters.output_requests++;
 453         } else if (fd->io_dir == 0) {
 454                 cmd_pkt->control_flags = 0;
 455         }
 456         /* Set BIT_13 of control flags for Async event */
 457         if (vha->flags.nvme2_enabled &&
 458             cmd->sqe.common.opcode == nvme_admin_async_event) {
 459                 cmd_pkt->control_flags |= cpu_to_le16(CF_ADMIN_ASYNC_EVENT);
 460         }
 461
 462         /* Set NPORT-ID */
 463         cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
 464         cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
 465         cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
 466         cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
 467         cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
 468
 469         /* NVME RSP IU */
 470         cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
 471         put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address);
 472
 473         /* NVME CNMD IU */
 474         cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
 475         cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(fd->cmddma);
 476
 477         cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
 478         cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
 479
 480         /* One DSD is available in the Command Type NVME IOCB */
 481         avail_dsds = 1;
 482         cur_dsd = &cmd_pkt->nvme_dsd;
 483         sgl = fd->first_sgl;
 484
 485         /* Load data segments */
 486         for_each_sg(sgl, sg, tot_dsds, i) {
 487                 cont_a64_entry_t *cont_pkt;
 488
 489                 /* Allocate additional continuation packets? */
 490                 if (avail_dsds == 0) {
 491                         /*
 492                          * Five DSDs are available in the Continuation
 493                          * Type 1 IOCB.
 494                          */
 495
 496                         /* Adjust ring index */
 497                         req->ring_index++;
 498                         if (req->ring_index == req->length) {
 499                                 req->ring_index = 0;
 500                                 req->ring_ptr = req->ring;
 501                         } else {
 502                                 req->ring_ptr++;
 503                         }
 504                         cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
 505                         put_unaligned_le32(CONTINUE_A64_TYPE,
 506                                            &cont_pkt->entry_type);
 507
 508                         cur_dsd = cont_pkt->dsd;
 509                         avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
 510                 }
 511
 512                 append_dsd64(&cur_dsd, sg);
 513                 avail_dsds--;
 514         }
 515
 516         /* Set total entry count. */
 517         cmd_pkt->entry_count = (uint8_t)req_cnt;
 518         wmb();
 519
 520         /* Adjust ring index. */
 521         req->ring_index++;
 522         if (req->ring_index == req->length) {
 523                 req->ring_index = 0;
 524                 req->ring_ptr = req->ring;
 525         } else {
 526                 req->ring_ptr++;
 527         }
 528
 529         /* Set chip new ring index. */
 530         wrt_reg_dword(req->req_q_in, req->ring_index);
 531
 532 queuing_error:
 533         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 534         return rval;
 535 }
 536
 537 /* Post a command */
 538 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
 539     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 540     struct nvmefc_fcp_req *fd)
 541 {
 542         fc_port_t *fcport;
 543         struct srb_iocb *nvme;
 544         struct scsi_qla_host *vha;
 545         int rval = -ENODEV;
 546         srb_t *sp;
 547         struct qla_qpair *qpair = hw_queue_handle;
 548         struct nvme_private *priv = fd->private;
 549         struct qla_nvme_rport *qla_rport = rport->private;
 550
 551         if (!priv) {
 552                 /* nvme association has been torn down */
 553                 return rval;
 554         }
 555
 556         fcport = qla_rport->fcport;
 557
 558         if (!qpair || !fcport || (qpair && !qpair->fw_started) ||
 559             (fcport && fcport->deleted))
 560                 return rval;
 561
 562         vha = fcport->vha;
 563
 564         if (!(fcport->nvme_flag & NVME_FLAG_REGISTERED))
 565                 return rval;
 566
 567         if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags) ||
 568             (qpair && !qpair->fw_started) || fcport->deleted)
 569                 return -EBUSY;
 570
 571         /*
 572          * If we know the dev is going away while the transport is still sending
 573          * IO's return busy back to stall the IO Q.  This happens when the
 574          * link goes away and fw hasn't notified us yet, but IO's are being
 575          * returned. If the dev comes back quickly we won't exhaust the IO
 576          * retry count at the core.
 577          */
 578         if (fcport->nvme_flag & NVME_FLAG_RESETTING)
 579                 return -EBUSY;
 580
 581         /* Alloc SRB structure */
 582         sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
 583         if (!sp)
 584                 return -EBUSY;
 585
 586         init_waitqueue_head(&sp->nvme_ls_waitq);
 587         kref_init(&sp->cmd_kref);
 588         spin_lock_init(&priv->cmd_lock);
 589         sp->priv = priv;
 590         priv->sp = sp;
 591         sp->type = SRB_NVME_CMD;
 592         sp->name = "nvme_cmd";
 593         sp->done = qla_nvme_sp_done;
 594         sp->put_fn = qla_nvme_release_fcp_cmd_kref;
 595         sp->qpair = qpair;
 596         sp->vha = vha;
 597         nvme = &sp->u.iocb_cmd;
 598         nvme->u.nvme.desc = fd;
 599
 600         rval = qla2x00_start_nvme_mq(sp);
 601         if (rval != QLA_SUCCESS) {
 602                 ql_log(ql_log_warn, vha, 0x212d,
 603                     "qla2x00_start_nvme_mq failed = %d\n", rval);
 604                 wake_up(&sp->nvme_ls_waitq);
 605                 sp->priv = NULL;
 606                 priv->sp = NULL;
 607                 qla2xxx_rel_qpair_sp(sp->qpair, sp);
 608         }
 609
 610         return rval;
 611 }
 612
 613 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
 614 {
 615         struct scsi_qla_host *vha = lport->private;
 616
 617         ql_log(ql_log_info, vha, 0x210f,
 618             "localport delete of %p completed.\n", vha->nvme_local_port);
 619         vha->nvme_local_port = NULL;
 620         complete(&vha->nvme_del_done);
 621 }
 622
 623 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
 624 {
 625         fc_port_t *fcport;
 626         struct qla_nvme_rport *qla_rport = rport->private;
 627
 628         fcport = qla_rport->fcport;
 629         fcport->nvme_remote_port = NULL;
 630         fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
 631         fcport->nvme_flag &= ~NVME_FLAG_DELETING;
 632         ql_log(ql_log_info, fcport->vha, 0x2110,
 633             "remoteport_delete of %p %8phN completed.\n",
 634             fcport, fcport->port_name);
 635         complete(&fcport->nvme_del_done);
 636 }
 637
 638 static struct nvme_fc_port_template qla_nvme_fc_transport = {
 639         .localport_delete = qla_nvme_localport_delete,
 640         .remoteport_delete = qla_nvme_remoteport_delete,
 641         .create_queue   = qla_nvme_alloc_queue,
 642         .delete_queue   = NULL,
 643         .ls_req         = qla_nvme_ls_req,
 644         .ls_abort       = qla_nvme_ls_abort,
 645         .fcp_io         = qla_nvme_post_cmd,
 646         .fcp_abort      = qla_nvme_fcp_abort,
 647         .max_hw_queues  = 8,
 648         .max_sgl_segments = 1024,
 649         .max_dif_sgl_segments = 64,
 650         .dma_boundary = 0xFFFFFFFF,
 651         .local_priv_sz  = 8,
 652         .remote_priv_sz = sizeof(struct qla_nvme_rport),
 653         .lsrqst_priv_sz = sizeof(struct nvme_private),
 654         .fcprqst_priv_sz = sizeof(struct nvme_private),
 655 };
 656
 657 void qla_nvme_unregister_remote_port(struct fc_port *fcport)
 658 {
 659         int ret;
 660
 661         if (!IS_ENABLED(CONFIG_NVME_FC))
 662                 return;
 663
 664         ql_log(ql_log_warn, NULL, 0x2112,
 665             "%s: unregister remoteport on %p %8phN\n",
 666             __func__, fcport, fcport->port_name);
 667
 668         if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags))
 669                 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
 670
 671         init_completion(&fcport->nvme_del_done);
 672         ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
 673         if (ret)
 674                 ql_log(ql_log_info, fcport->vha, 0x2114,
 675                         "%s: Failed to unregister nvme_remote_port (%d)\n",
 676                             __func__, ret);
 677         wait_for_completion(&fcport->nvme_del_done);
 678 }
 679
 680 void qla_nvme_delete(struct scsi_qla_host *vha)
 681 {
 682         int nv_ret;
 683
 684         if (!IS_ENABLED(CONFIG_NVME_FC))
 685                 return;
 686
 687         if (vha->nvme_local_port) {
 688                 init_completion(&vha->nvme_del_done);
 689                 ql_log(ql_log_info, vha, 0x2116,
 690                         "unregister localport=%p\n",
 691                         vha->nvme_local_port);
 692                 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
 693                 if (nv_ret)
 694                         ql_log(ql_log_info, vha, 0x2115,
 695                             "Unregister of localport failed\n");
 696                 else
 697                         wait_for_completion(&vha->nvme_del_done);
 698         }
 699 }
 700
 701 int qla_nvme_register_hba(struct scsi_qla_host *vha)
 702 {
 703         struct nvme_fc_port_template *tmpl;
 704         struct qla_hw_data *ha;
 705         struct nvme_fc_port_info pinfo;
 706         int ret = -EINVAL;
 707
 708         if (!IS_ENABLED(CONFIG_NVME_FC))
 709                 return ret;
 710
 711         ha = vha->hw;
 712         tmpl = &qla_nvme_fc_transport;
 713
 714         WARN_ON(vha->nvme_local_port);
 715
 716         if (ha->max_req_queues < 3) {
 717                 if (!ha->flags.max_req_queue_warned)
 718                         ql_log(ql_log_info, vha, 0x2120,
 719                                "%s: Disabling FC-NVME due to lack of free queue pairs (%d).\n",
 720                                __func__, ha->max_req_queues);
 721                 ha->flags.max_req_queue_warned = 1;
 722                 return ret;
 723         }
 724
 725         qla_nvme_fc_transport.max_hw_queues =
 726             min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
 727                 (uint8_t)(ha->max_req_queues - 2));
 728
 729         pinfo.node_name = wwn_to_u64(vha->node_name);
 730         pinfo.port_name = wwn_to_u64(vha->port_name);
 731         pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
 732         pinfo.port_id = vha->d_id.b24;
 733
 734         ql_log(ql_log_info, vha, 0xffff,
 735             "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
 736             pinfo.node_name, pinfo.port_name, pinfo.port_id);
 737         qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
 738
 739         ret = nvme_fc_register_localport(&pinfo, tmpl,
 740             get_device(&ha->pdev->dev), &vha->nvme_local_port);
 741         if (ret) {
 742                 ql_log(ql_log_warn, vha, 0xffff,
 743                     "register_localport failed: ret=%x\n", ret);
 744         } else {
 745                 vha->nvme_local_port->private = vha;
 746         }
 747
 748         return ret;
 749 }