drivers/scsi/qla2xxx/qla_nvme.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * QLogic Fibre Channel HBA Driver
   4  * Copyright (c)  2003-2017 QLogic Corporation
   5  */
   6 #include "qla_nvme.h"
   7 #include <linux/scatterlist.h>
   8 #include <linux/delay.h>
   9 #include <linux/nvme.h>
  10 #include <linux/nvme-fc.h>
  11
  12 static struct nvme_fc_port_template qla_nvme_fc_transport;
  13
  14 int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
  15 {
  16         struct qla_nvme_rport *rport;
  17         struct nvme_fc_port_info req;
  18         int ret;
  19
  20         if (!IS_ENABLED(CONFIG_NVME_FC))
  21                 return 0;
  22
  23         if (!vha->flags.nvme_enabled) {
  24                 ql_log(ql_log_info, vha, 0x2100,
  25                     "%s: Not registering target since Host NVME is not enabled\n",
  26                     __func__);
  27                 return 0;
  28         }
  29
  30         if (!vha->nvme_local_port && qla_nvme_register_hba(vha))
  31                 return 0;
  32
  33         if (!(fcport->nvme_prli_service_param &
  34             (NVME_PRLI_SP_TARGET | NVME_PRLI_SP_DISCOVERY)) ||
  35                 (fcport->nvme_flag & NVME_FLAG_REGISTERED))
  36                 return 0;
  37
  38         fcport->nvme_flag &= ~NVME_FLAG_RESETTING;
  39
  40         memset(&req, 0, sizeof(struct nvme_fc_port_info));
  41         req.port_name = wwn_to_u64(fcport->port_name);
  42         req.node_name = wwn_to_u64(fcport->node_name);
  43         req.port_role = 0;
  44         req.dev_loss_tmo = 0;
  45
  46         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR)
  47                 req.port_role = FC_PORT_ROLE_NVME_INITIATOR;
  48
  49         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_TARGET)
  50                 req.port_role |= FC_PORT_ROLE_NVME_TARGET;
  51
  52         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_DISCOVERY)
  53                 req.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
  54
  55         req.port_id = fcport->d_id.b24;
  56
  57         ql_log(ql_log_info, vha, 0x2102,
  58             "%s: traddr=nn-0x%016llx:pn-0x%016llx PortID:%06x\n",
  59             __func__, req.node_name, req.port_name,
  60             req.port_id);
  61
  62         ret = nvme_fc_register_remoteport(vha->nvme_local_port, &req,
  63             &fcport->nvme_remote_port);
  64         if (ret) {
  65                 ql_log(ql_log_warn, vha, 0x212e,
  66                     "Failed to register remote port. Transport returned %d\n",
  67                     ret);
  68                 return ret;
  69         }
  70
  71         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_SLER)
  72                 ql_log(ql_log_info, vha, 0x212a,
  73                        "PortID:%06x Supports SLER\n", req.port_id);
  74
  75         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_PI_CTRL)
  76                 ql_log(ql_log_info, vha, 0x212b,
  77                        "PortID:%06x Supports PI control\n", req.port_id);
  78
  79         rport = fcport->nvme_remote_port->private;
  80         rport->fcport = fcport;
  81
  82         fcport->nvme_flag |= NVME_FLAG_REGISTERED;
  83         return 0;
  84 }
  85
  86 /* Allocate a queue for NVMe traffic */
  87 static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport,
  88     unsigned int qidx, u16 qsize, void **handle)
  89 {
  90         struct scsi_qla_host *vha;
  91         struct qla_hw_data *ha;
  92         struct qla_qpair *qpair;
  93
  94         /* Map admin queue and 1st IO queue to index 0 */
  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         /* Use base qpair if max_qpairs is 0 */
 113         if (!ha->max_qpairs) {
 114                 qpair = ha->base_qpair;
 115         } else {
 116                 if (ha->queue_pair_map[qidx]) {
 117                         *handle = ha->queue_pair_map[qidx];
 118                         ql_log(ql_log_info, vha, 0x2121,
 119                                "Returning existing qpair of %p for idx=%x\n",
 120                                *handle, qidx);
 121                         return 0;
 122                 }
 123
 124                 qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
 125                 if (!qpair) {
 126                         ql_log(ql_log_warn, vha, 0x2122,
 127                                "Failed to allocate qpair\n");
 128                         return -EINVAL;
 129                 }
 130         }
 131         *handle = qpair;
 132
 133         return 0;
 134 }
 135
 136 static void qla_nvme_release_fcp_cmd_kref(struct kref *kref)
 137 {
 138         struct srb *sp = container_of(kref, struct srb, cmd_kref);
 139         struct nvme_private *priv = (struct nvme_private *)sp->priv;
 140         struct nvmefc_fcp_req *fd;
 141         struct srb_iocb *nvme;
 142         unsigned long flags;
 143
 144         if (!priv)
 145                 goto out;
 146
 147         nvme = &sp->u.iocb_cmd;
 148         fd = nvme->u.nvme.desc;
 149
 150         spin_lock_irqsave(&priv->cmd_lock, flags);
 151         priv->sp = NULL;
 152         sp->priv = NULL;
 153         if (priv->comp_status == QLA_SUCCESS) {
 154                 fd->rcv_rsplen = le16_to_cpu(nvme->u.nvme.rsp_pyld_len);
 155                 fd->status = NVME_SC_SUCCESS;
 156         } else {
 157                 fd->rcv_rsplen = 0;
 158                 fd->transferred_length = 0;
 159                 fd->status = NVME_SC_INTERNAL;
 160         }
 161         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 162
 163         fd->done(fd);
 164 out:
 165         qla2xxx_rel_qpair_sp(sp->qpair, sp);
 166 }
 167
 168 static void qla_nvme_release_ls_cmd_kref(struct kref *kref)
 169 {
 170         struct srb *sp = container_of(kref, struct srb, cmd_kref);
 171         struct nvme_private *priv = (struct nvme_private *)sp->priv;
 172         struct nvmefc_ls_req *fd;
 173         unsigned long flags;
 174
 175         if (!priv)
 176                 goto out;
 177
 178         spin_lock_irqsave(&priv->cmd_lock, flags);
 179         priv->sp = NULL;
 180         sp->priv = NULL;
 181         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 182
 183         fd = priv->fd;
 184
 185         fd->done(fd, priv->comp_status);
 186 out:
 187         qla2x00_rel_sp(sp);
 188 }
 189
 190 static void qla_nvme_ls_complete(struct work_struct *work)
 191 {
 192         struct nvme_private *priv =
 193                 container_of(work, struct nvme_private, ls_work);
 194
 195         kref_put(&priv->sp->cmd_kref, qla_nvme_release_ls_cmd_kref);
 196 }
 197
 198 static void qla_nvme_sp_ls_done(srb_t *sp, int res)
 199 {
 200         struct nvme_private *priv = sp->priv;
 201
 202         if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0))
 203                 return;
 204
 205         if (res)
 206                 res = -EINVAL;
 207
 208         priv->comp_status = res;
 209         INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
 210         schedule_work(&priv->ls_work);
 211 }
 212
 213 /* it assumed that QPair lock is held. */
 214 static void qla_nvme_sp_done(srb_t *sp, int res)
 215 {
 216         struct nvme_private *priv = sp->priv;
 217
 218         priv->comp_status = res;
 219         kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref);
 220
 221         return;
 222 }
 223
 224 static void qla_nvme_abort_work(struct work_struct *work)
 225 {
 226         struct nvme_private *priv =
 227                 container_of(work, struct nvme_private, abort_work);
 228         srb_t *sp = priv->sp;
 229         fc_port_t *fcport = sp->fcport;
 230         struct qla_hw_data *ha = fcport->vha->hw;
 231         int rval;
 232
 233         ql_dbg(ql_dbg_io, fcport->vha, 0xffff,
 234                "%s called for sp=%p, hndl=%x on fcport=%p deleted=%d\n",
 235                __func__, sp, sp->handle, fcport, fcport->deleted);
 236
 237         if (!ha->flags.fw_started && fcport->deleted)
 238                 goto out;
 239
 240         if (ha->flags.host_shutting_down) {
 241                 ql_log(ql_log_info, sp->fcport->vha, 0xffff,
 242                     "%s Calling done on sp: %p, type: 0x%x\n",
 243                     __func__, sp, sp->type);
 244                 sp->done(sp, 0);
 245                 goto out;
 246         }
 247
 248         rval = ha->isp_ops->abort_command(sp);
 249
 250         ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
 251             "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
 252             __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
 253             sp, sp->handle, fcport, rval);
 254
 255 out:
 256         /* kref_get was done before work was schedule. */
 257         kref_put(&sp->cmd_kref, sp->put_fn);
 258 }
 259
 260 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
 261     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 262 {
 263         struct nvme_private *priv = fd->private;
 264         unsigned long flags;
 265
 266         spin_lock_irqsave(&priv->cmd_lock, flags);
 267         if (!priv->sp) {
 268                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 269                 return;
 270         }
 271
 272         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 273                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 274                 return;
 275         }
 276         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 277
 278         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 279         schedule_work(&priv->abort_work);
 280 }
 281
 282 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
 283     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 284 {
 285         struct qla_nvme_rport *qla_rport = rport->private;
 286         fc_port_t *fcport = qla_rport->fcport;
 287         struct srb_iocb   *nvme;
 288         struct nvme_private *priv = fd->private;
 289         struct scsi_qla_host *vha;
 290         int     rval = QLA_FUNCTION_FAILED;
 291         struct qla_hw_data *ha;
 292         srb_t           *sp;
 293
 294
 295         if (!fcport || (fcport && fcport->deleted))
 296                 return rval;
 297
 298         vha = fcport->vha;
 299         ha = vha->hw;
 300
 301         if (!ha->flags.fw_started)
 302                 return rval;
 303
 304         /* Alloc SRB structure */
 305         sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
 306         if (!sp)
 307                 return rval;
 308
 309         sp->type = SRB_NVME_LS;
 310         sp->name = "nvme_ls";
 311         sp->done = qla_nvme_sp_ls_done;
 312         sp->put_fn = qla_nvme_release_ls_cmd_kref;
 313         sp->priv = priv;
 314         priv->sp = sp;
 315         kref_init(&sp->cmd_kref);
 316         spin_lock_init(&priv->cmd_lock);
 317         nvme = &sp->u.iocb_cmd;
 318         priv->fd = fd;
 319         nvme->u.nvme.desc = fd;
 320         nvme->u.nvme.dir = 0;
 321         nvme->u.nvme.dl = 0;
 322         nvme->u.nvme.cmd_len = fd->rqstlen;
 323         nvme->u.nvme.rsp_len = fd->rsplen;
 324         nvme->u.nvme.rsp_dma = fd->rspdma;
 325         nvme->u.nvme.timeout_sec = fd->timeout;
 326         nvme->u.nvme.cmd_dma = fd->rqstdma;
 327         dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
 328             fd->rqstlen, DMA_TO_DEVICE);
 329
 330         rval = qla2x00_start_sp(sp);
 331         if (rval != QLA_SUCCESS) {
 332                 ql_log(ql_log_warn, vha, 0x700e,
 333                     "qla2x00_start_sp failed = %d\n", rval);
 334                 sp->priv = NULL;
 335                 priv->sp = NULL;
 336                 qla2x00_rel_sp(sp);
 337                 return rval;
 338         }
 339
 340         return rval;
 341 }
 342
 343 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
 344     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 345     struct nvmefc_fcp_req *fd)
 346 {
 347         struct nvme_private *priv = fd->private;
 348         unsigned long flags;
 349
 350         spin_lock_irqsave(&priv->cmd_lock, flags);
 351         if (!priv->sp) {
 352                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 353                 return;
 354         }
 355         if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 356                 spin_unlock_irqrestore(&priv->cmd_lock, flags);
 357                 return;
 358         }
 359         spin_unlock_irqrestore(&priv->cmd_lock, flags);
 360
 361         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 362         schedule_work(&priv->abort_work);
 363 }
 364
 365 static inline int qla2x00_start_nvme_mq(srb_t *sp)
 366 {
 367         unsigned long   flags;
 368         uint32_t        *clr_ptr;
 369         uint32_t        handle;
 370         struct cmd_nvme *cmd_pkt;
 371         uint16_t        cnt, i;
 372         uint16_t        req_cnt;
 373         uint16_t        tot_dsds;
 374         uint16_t        avail_dsds;
 375         struct dsd64    *cur_dsd;
 376         struct req_que *req = NULL;
 377         struct scsi_qla_host *vha = sp->fcport->vha;
 378         struct qla_hw_data *ha = vha->hw;
 379         struct qla_qpair *qpair = sp->qpair;
 380         struct srb_iocb *nvme = &sp->u.iocb_cmd;
 381         struct scatterlist *sgl, *sg;
 382         struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
 383         struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
 384         uint32_t        rval = QLA_SUCCESS;
 385
 386         /* Setup qpair pointers */
 387         req = qpair->req;
 388         tot_dsds = fd->sg_cnt;
 389
 390         /* Acquire qpair specific lock */
 391         spin_lock_irqsave(&qpair->qp_lock, flags);
 392
 393         handle = qla2xxx_get_next_handle(req);
 394         if (handle == 0) {
 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                 if (IS_SHADOW_REG_CAPABLE(ha)) {
 401                         cnt = *req->out_ptr;
 402                 } else {
 403                         cnt = rd_reg_dword_relaxed(req->req_q_out);
 404                         if (qla2x00_check_reg16_for_disconnect(vha, cnt))
 405                                 goto queuing_error;
 406                 }
 407
 408                 if (req->ring_index < cnt)
 409                         req->cnt = cnt - req->ring_index;
 410                 else
 411                         req->cnt = req->length - (req->ring_index - cnt);
 412
 413                 if (req->cnt < (req_cnt + 2)){
 414                         rval = -EBUSY;
 415                         goto queuing_error;
 416                 }
 417         }
 418
 419         if (unlikely(!fd->sqid)) {
 420                 if (cmd->sqe.common.opcode == nvme_admin_async_event) {
 421                         nvme->u.nvme.aen_op = 1;
 422                         atomic_inc(&ha->nvme_active_aen_cnt);
 423                 }
 424         }
 425
 426         /* Build command packet. */
 427         req->current_outstanding_cmd = handle;
 428         req->outstanding_cmds[handle] = sp;
 429         sp->handle = handle;
 430         req->cnt -= req_cnt;
 431
 432         cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
 433         cmd_pkt->handle = make_handle(req->id, handle);
 434
 435         /* Zero out remaining portion of packet. */
 436         clr_ptr = (uint32_t *)cmd_pkt + 2;
 437         memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
 438
 439         cmd_pkt->entry_status = 0;
 440
 441         /* Update entry type to indicate Command NVME IOCB */
 442         cmd_pkt->entry_type = COMMAND_NVME;
 443
 444         /* No data transfer how do we check buffer len == 0?? */
 445         if (fd->io_dir == NVMEFC_FCP_READ) {
 446                 cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
 447                 qpair->counters.input_bytes += fd->payload_length;
 448                 qpair->counters.input_requests++;
 449         } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
 450                 cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
 451                 if ((vha->flags.nvme_first_burst) &&
 452                     (sp->fcport->nvme_prli_service_param &
 453                         NVME_PRLI_SP_FIRST_BURST)) {
 454                         if ((fd->payload_length <=
 455                             sp->fcport->nvme_first_burst_size) ||
 456                                 (sp->fcport->nvme_first_burst_size == 0))
 457                                 cmd_pkt->control_flags |=
 458                                         cpu_to_le16(CF_NVME_FIRST_BURST_ENABLE);
 459                 }
 460                 qpair->counters.output_bytes += fd->payload_length;
 461                 qpair->counters.output_requests++;
 462         } else if (fd->io_dir == 0) {
 463                 cmd_pkt->control_flags = 0;
 464         }
 465         /* Set BIT_13 of control flags for Async event */
 466         if (vha->flags.nvme2_enabled &&
 467             cmd->sqe.common.opcode == nvme_admin_async_event) {
 468                 cmd_pkt->control_flags |= cpu_to_le16(CF_ADMIN_ASYNC_EVENT);
 469         }
 470
 471         /* Set NPORT-ID */
 472         cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
 473         cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
 474         cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
 475         cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
 476         cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
 477
 478         /* NVME RSP IU */
 479         cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
 480         put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address);
 481
 482         /* NVME CNMD IU */
 483         cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
 484         cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(fd->cmddma);
 485
 486         cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
 487         cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
 488
 489         /* One DSD is available in the Command Type NVME IOCB */
 490         avail_dsds = 1;
 491         cur_dsd = &cmd_pkt->nvme_dsd;
 492         sgl = fd->first_sgl;
 493
 494         /* Load data segments */
 495         for_each_sg(sgl, sg, tot_dsds, i) {
 496                 cont_a64_entry_t *cont_pkt;
 497
 498                 /* Allocate additional continuation packets? */
 499                 if (avail_dsds == 0) {
 500                         /*
 501                          * Five DSDs are available in the Continuation
 502                          * Type 1 IOCB.
 503                          */
 504
 505                         /* Adjust ring index */
 506                         req->ring_index++;
 507                         if (req->ring_index == req->length) {
 508                                 req->ring_index = 0;
 509                                 req->ring_ptr = req->ring;
 510                         } else {
 511                                 req->ring_ptr++;
 512                         }
 513                         cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
 514                         put_unaligned_le32(CONTINUE_A64_TYPE,
 515                                            &cont_pkt->entry_type);
 516
 517                         cur_dsd = cont_pkt->dsd;
 518                         avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
 519                 }
 520
 521                 append_dsd64(&cur_dsd, sg);
 522                 avail_dsds--;
 523         }
 524
 525         /* Set total entry count. */
 526         cmd_pkt->entry_count = (uint8_t)req_cnt;
 527         wmb();
 528
 529         /* Adjust ring index. */
 530         req->ring_index++;
 531         if (req->ring_index == req->length) {
 532                 req->ring_index = 0;
 533                 req->ring_ptr = req->ring;
 534         } else {
 535                 req->ring_ptr++;
 536         }
 537
 538         /* Set chip new ring index. */
 539         wrt_reg_dword(req->req_q_in, req->ring_index);
 540
 541 queuing_error:
 542         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 543
 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;
 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 -ENODEV;
 564         }
 565
 566         fcport = qla_rport->fcport;
 567
 568         if (!qpair || !fcport)
 569                 return -ENODEV;
 570
 571         if (!qpair->fw_started || fcport->deleted)
 572                 return -EBUSY;
 573
 574         vha = fcport->vha;
 575
 576         if (!(fcport->nvme_flag & NVME_FLAG_REGISTERED))
 577                 return -ENODEV;
 578
 579         if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags) ||
 580             (qpair && !qpair->fw_started) || fcport->deleted)
 581                 return -EBUSY;
 582
 583         /*
 584          * If we know the dev is going away while the transport is still sending
 585          * IO's return busy back to stall the IO Q.  This happens when the
 586          * link goes away and fw hasn't notified us yet, but IO's are being
 587          * returned. If the dev comes back quickly we won't exhaust the IO
 588          * retry count at the core.
 589          */
 590         if (fcport->nvme_flag & NVME_FLAG_RESETTING)
 591                 return -EBUSY;
 592
 593         /* Alloc SRB structure */
 594         sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
 595         if (!sp)
 596                 return -EBUSY;
 597
 598         kref_init(&sp->cmd_kref);
 599         spin_lock_init(&priv->cmd_lock);
 600         sp->priv = priv;
 601         priv->sp = sp;
 602         sp->type = SRB_NVME_CMD;
 603         sp->name = "nvme_cmd";
 604         sp->done = qla_nvme_sp_done;
 605         sp->put_fn = qla_nvme_release_fcp_cmd_kref;
 606         sp->qpair = qpair;
 607         sp->vha = vha;
 608         nvme = &sp->u.iocb_cmd;
 609         nvme->u.nvme.desc = fd;
 610
 611         rval = qla2x00_start_nvme_mq(sp);
 612         if (rval != QLA_SUCCESS) {
 613                 ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x212d,
 614                     "qla2x00_start_nvme_mq failed = %d\n", rval);
 615                 sp->priv = NULL;
 616                 priv->sp = NULL;
 617                 qla2xxx_rel_qpair_sp(sp->qpair, sp);
 618         }
 619
 620         return rval;
 621 }
 622
 623 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
 624 {
 625         struct scsi_qla_host *vha = lport->private;
 626
 627         ql_log(ql_log_info, vha, 0x210f,
 628             "localport delete of %p completed.\n", vha->nvme_local_port);
 629         vha->nvme_local_port = NULL;
 630         complete(&vha->nvme_del_done);
 631 }
 632
 633 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
 634 {
 635         fc_port_t *fcport;
 636         struct qla_nvme_rport *qla_rport = rport->private;
 637
 638         fcport = qla_rport->fcport;
 639         fcport->nvme_remote_port = NULL;
 640         fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
 641         fcport->nvme_flag &= ~NVME_FLAG_DELETING;
 642         ql_log(ql_log_info, fcport->vha, 0x2110,
 643             "remoteport_delete of %p %8phN completed.\n",
 644             fcport, fcport->port_name);
 645         complete(&fcport->nvme_del_done);
 646 }
 647
 648 static struct nvme_fc_port_template qla_nvme_fc_transport = {
 649         .localport_delete = qla_nvme_localport_delete,
 650         .remoteport_delete = qla_nvme_remoteport_delete,
 651         .create_queue   = qla_nvme_alloc_queue,
 652         .delete_queue   = NULL,
 653         .ls_req         = qla_nvme_ls_req,
 654         .ls_abort       = qla_nvme_ls_abort,
 655         .fcp_io         = qla_nvme_post_cmd,
 656         .fcp_abort      = qla_nvme_fcp_abort,
 657         .max_hw_queues  = 8,
 658         .max_sgl_segments = 1024,
 659         .max_dif_sgl_segments = 64,
 660         .dma_boundary = 0xFFFFFFFF,
 661         .local_priv_sz  = 8,
 662         .remote_priv_sz = sizeof(struct qla_nvme_rport),
 663         .lsrqst_priv_sz = sizeof(struct nvme_private),
 664         .fcprqst_priv_sz = sizeof(struct nvme_private),
 665 };
 666
 667 void qla_nvme_unregister_remote_port(struct fc_port *fcport)
 668 {
 669         int ret;
 670
 671         if (!IS_ENABLED(CONFIG_NVME_FC))
 672                 return;
 673
 674         ql_log(ql_log_warn, NULL, 0x2112,
 675             "%s: unregister remoteport on %p %8phN\n",
 676             __func__, fcport, fcport->port_name);
 677
 678         if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags))
 679                 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
 680
 681         init_completion(&fcport->nvme_del_done);
 682         ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
 683         if (ret)
 684                 ql_log(ql_log_info, fcport->vha, 0x2114,
 685                         "%s: Failed to unregister nvme_remote_port (%d)\n",
 686                             __func__, ret);
 687         wait_for_completion(&fcport->nvme_del_done);
 688 }
 689
 690 void qla_nvme_delete(struct scsi_qla_host *vha)
 691 {
 692         int nv_ret;
 693
 694         if (!IS_ENABLED(CONFIG_NVME_FC))
 695                 return;
 696
 697         if (vha->nvme_local_port) {
 698                 init_completion(&vha->nvme_del_done);
 699                 ql_log(ql_log_info, vha, 0x2116,
 700                         "unregister localport=%p\n",
 701                         vha->nvme_local_port);
 702                 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
 703                 if (nv_ret)
 704                         ql_log(ql_log_info, vha, 0x2115,
 705                             "Unregister of localport failed\n");
 706                 else
 707                         wait_for_completion(&vha->nvme_del_done);
 708         }
 709 }
 710
 711 int qla_nvme_register_hba(struct scsi_qla_host *vha)
 712 {
 713         struct nvme_fc_port_template *tmpl;
 714         struct qla_hw_data *ha;
 715         struct nvme_fc_port_info pinfo;
 716         int ret = -EINVAL;
 717
 718         if (!IS_ENABLED(CONFIG_NVME_FC))
 719                 return ret;
 720
 721         ha = vha->hw;
 722         tmpl = &qla_nvme_fc_transport;
 723
 724         WARN_ON(vha->nvme_local_port);
 725
 726         qla_nvme_fc_transport.max_hw_queues =
 727             min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
 728                 (uint8_t)(ha->max_qpairs ? ha->max_qpairs : 1));
 729
 730         pinfo.node_name = wwn_to_u64(vha->node_name);
 731         pinfo.port_name = wwn_to_u64(vha->port_name);
 732         pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
 733         pinfo.port_id = vha->d_id.b24;
 734
 735         ql_log(ql_log_info, vha, 0xffff,
 736             "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
 737             pinfo.node_name, pinfo.port_name, pinfo.port_id);
 738         qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
 739
 740         ret = nvme_fc_register_localport(&pinfo, tmpl,
 741             get_device(&ha->pdev->dev), &vha->nvme_local_port);
 742         if (ret) {
 743                 ql_log(ql_log_warn, vha, 0xffff,
 744                     "register_localport failed: ret=%x\n", ret);
 745         } else {
 746                 vha->nvme_local_port->private = vha;
 747         }
 748
 749         return ret;
 750 }