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 static void qla_nvme_unregister_remote_port(struct work_struct *);
  16
  17 int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
  18 {
  19         struct qla_nvme_rport *rport;
  20         struct nvme_fc_port_info req;
  21         int ret;
  22
  23         if (!IS_ENABLED(CONFIG_NVME_FC))
  24                 return 0;
  25
  26         if (!vha->flags.nvme_enabled) {
  27                 ql_log(ql_log_info, vha, 0x2100,
  28                     "%s: Not registering target since Host NVME is not enabled\n",
  29                     __func__);
  30                 return 0;
  31         }
  32
  33         if (!vha->nvme_local_port && qla_nvme_register_hba(vha))
  34                 return 0;
  35
  36         if (!(fcport->nvme_prli_service_param &
  37             (NVME_PRLI_SP_TARGET | NVME_PRLI_SP_DISCOVERY)) ||
  38                 (fcport->nvme_flag & NVME_FLAG_REGISTERED))
  39                 return 0;
  40
  41         INIT_WORK(&fcport->nvme_del_work, qla_nvme_unregister_remote_port);
  42         fcport->nvme_flag &= ~NVME_FLAG_RESETTING;
  43
  44         memset(&req, 0, sizeof(struct nvme_fc_port_info));
  45         req.port_name = wwn_to_u64(fcport->port_name);
  46         req.node_name = wwn_to_u64(fcport->node_name);
  47         req.port_role = 0;
  48         req.dev_loss_tmo = NVME_FC_DEV_LOSS_TMO;
  49
  50         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR)
  51                 req.port_role = FC_PORT_ROLE_NVME_INITIATOR;
  52
  53         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_TARGET)
  54                 req.port_role |= FC_PORT_ROLE_NVME_TARGET;
  55
  56         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_DISCOVERY)
  57                 req.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
  58
  59         req.port_id = fcport->d_id.b24;
  60
  61         ql_log(ql_log_info, vha, 0x2102,
  62             "%s: traddr=nn-0x%016llx:pn-0x%016llx PortID:%06x\n",
  63             __func__, req.node_name, req.port_name,
  64             req.port_id);
  65
  66         ret = nvme_fc_register_remoteport(vha->nvme_local_port, &req,
  67             &fcport->nvme_remote_port);
  68         if (ret) {
  69                 ql_log(ql_log_warn, vha, 0x212e,
  70                     "Failed to register remote port. Transport returned %d\n",
  71                     ret);
  72                 return ret;
  73         }
  74
  75         rport = fcport->nvme_remote_port->private;
  76         rport->fcport = fcport;
  77         list_add_tail(&rport->list, &vha->nvme_rport_list);
  78
  79         fcport->nvme_flag |= NVME_FLAG_REGISTERED;
  80         return 0;
  81 }
  82
  83 /* Allocate a queue for NVMe traffic */
  84 static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport,
  85     unsigned int qidx, u16 qsize, void **handle)
  86 {
  87         struct scsi_qla_host *vha;
  88         struct qla_hw_data *ha;
  89         struct qla_qpair *qpair;
  90
  91         if (!qidx)
  92                 qidx++;
  93
  94         vha = (struct scsi_qla_host *)lport->private;
  95         ha = vha->hw;
  96
  97         ql_log(ql_log_info, vha, 0x2104,
  98             "%s: handle %p, idx =%d, qsize %d\n",
  99             __func__, handle, qidx, qsize);
 100
 101         if (qidx > qla_nvme_fc_transport.max_hw_queues) {
 102                 ql_log(ql_log_warn, vha, 0x212f,
 103                     "%s: Illegal qidx=%d. Max=%d\n",
 104                     __func__, qidx, qla_nvme_fc_transport.max_hw_queues);
 105                 return -EINVAL;
 106         }
 107
 108         if (ha->queue_pair_map[qidx]) {
 109                 *handle = ha->queue_pair_map[qidx];
 110                 ql_log(ql_log_info, vha, 0x2121,
 111                     "Returning existing qpair of %p for idx=%x\n",
 112                     *handle, qidx);
 113                 return 0;
 114         }
 115
 116         qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
 117         if (qpair == NULL) {
 118                 ql_log(ql_log_warn, vha, 0x2122,
 119                     "Failed to allocate qpair\n");
 120                 return -EINVAL;
 121         }
 122         *handle = qpair;
 123
 124         return 0;
 125 }
 126
 127 static void qla_nvme_sp_ls_done(void *ptr, int res)
 128 {
 129         srb_t *sp = ptr;
 130         struct srb_iocb *nvme;
 131         struct nvmefc_ls_req   *fd;
 132         struct nvme_private *priv;
 133
 134         if (atomic_read(&sp->ref_count) == 0) {
 135                 ql_log(ql_log_warn, sp->fcport->vha, 0x2123,
 136                     "SP reference-count to ZERO on LS_done -- sp=%p.\n", sp);
 137                 return;
 138         }
 139
 140         if (!atomic_dec_and_test(&sp->ref_count))
 141                 return;
 142
 143         if (res)
 144                 res = -EINVAL;
 145
 146         nvme = &sp->u.iocb_cmd;
 147         fd = nvme->u.nvme.desc;
 148         priv = fd->private;
 149         priv->comp_status = res;
 150         schedule_work(&priv->ls_work);
 151         /* work schedule doesn't need the sp */
 152         qla2x00_rel_sp(sp);
 153 }
 154
 155 static void qla_nvme_sp_done(void *ptr, int res)
 156 {
 157         srb_t *sp = ptr;
 158         struct srb_iocb *nvme;
 159         struct nvmefc_fcp_req *fd;
 160
 161         nvme = &sp->u.iocb_cmd;
 162         fd = nvme->u.nvme.desc;
 163
 164         if (!atomic_dec_and_test(&sp->ref_count))
 165                 return;
 166
 167         if (res == QLA_SUCCESS)
 168                 fd->status = 0;
 169         else
 170                 fd->status = NVME_SC_INTERNAL;
 171
 172         fd->rcv_rsplen = nvme->u.nvme.rsp_pyld_len;
 173         fd->done(fd);
 174         qla2xxx_rel_qpair_sp(sp->qpair, sp);
 175
 176         return;
 177 }
 178
 179 static void qla_nvme_abort_work(struct work_struct *work)
 180 {
 181         struct nvme_private *priv =
 182                 container_of(work, struct nvme_private, abort_work);
 183         srb_t *sp = priv->sp;
 184         fc_port_t *fcport = sp->fcport;
 185         struct qla_hw_data *ha = fcport->vha->hw;
 186         int rval;
 187
 188         if (fcport)
 189                 ql_dbg(ql_dbg_io, fcport->vha, 0xffff,
 190                     "%s called for sp=%p, hndl=%x on fcport=%p deleted=%d\n",
 191                     __func__, sp, sp->handle, fcport, fcport->deleted);
 192
 193         if (!ha->flags.fw_started && (fcport && fcport->deleted))
 194                 return;
 195
 196         rval = ha->isp_ops->abort_command(sp);
 197
 198         ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
 199             "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
 200             __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
 201             sp, sp->handle, fcport, rval);
 202 }
 203
 204 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
 205     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 206 {
 207         struct nvme_private *priv = fd->private;
 208
 209         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 210         schedule_work(&priv->abort_work);
 211 }
 212
 213 static void qla_nvme_ls_complete(struct work_struct *work)
 214 {
 215         struct nvme_private *priv =
 216             container_of(work, struct nvme_private, ls_work);
 217         struct nvmefc_ls_req *fd = priv->fd;
 218
 219         fd->done(fd, priv->comp_status);
 220 }
 221
 222 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
 223     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 224 {
 225         struct qla_nvme_rport *qla_rport = rport->private;
 226         fc_port_t *fcport = qla_rport->fcport;
 227         struct srb_iocb   *nvme;
 228         struct nvme_private *priv = fd->private;
 229         struct scsi_qla_host *vha;
 230         int     rval = QLA_FUNCTION_FAILED;
 231         struct qla_hw_data *ha;
 232         srb_t           *sp;
 233
 234         vha = fcport->vha;
 235         ha = vha->hw;
 236         /* Alloc SRB structure */
 237         sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
 238         if (!sp)
 239                 return rval;
 240
 241         sp->type = SRB_NVME_LS;
 242         sp->name = "nvme_ls";
 243         sp->done = qla_nvme_sp_ls_done;
 244         atomic_set(&sp->ref_count, 1);
 245         nvme = &sp->u.iocb_cmd;
 246         priv->sp = sp;
 247         priv->fd = fd;
 248         INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
 249         nvme->u.nvme.desc = fd;
 250         nvme->u.nvme.dir = 0;
 251         nvme->u.nvme.dl = 0;
 252         nvme->u.nvme.cmd_len = fd->rqstlen;
 253         nvme->u.nvme.rsp_len = fd->rsplen;
 254         nvme->u.nvme.rsp_dma = fd->rspdma;
 255         nvme->u.nvme.timeout_sec = fd->timeout;
 256         nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
 257             fd->rqstlen, DMA_TO_DEVICE);
 258         dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
 259             fd->rqstlen, DMA_TO_DEVICE);
 260
 261         rval = qla2x00_start_sp(sp);
 262         if (rval != QLA_SUCCESS) {
 263                 ql_log(ql_log_warn, vha, 0x700e,
 264                     "qla2x00_start_sp failed = %d\n", rval);
 265                 atomic_dec(&sp->ref_count);
 266                 wake_up(&sp->nvme_ls_waitq);
 267                 return rval;
 268         }
 269
 270         return rval;
 271 }
 272
 273 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
 274     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 275     struct nvmefc_fcp_req *fd)
 276 {
 277         struct nvme_private *priv = fd->private;
 278
 279         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 280         schedule_work(&priv->abort_work);
 281 }
 282
 283 static inline int qla2x00_start_nvme_mq(srb_t *sp)
 284 {
 285         unsigned long   flags;
 286         uint32_t        *clr_ptr;
 287         uint32_t        index;
 288         uint32_t        handle;
 289         struct cmd_nvme *cmd_pkt;
 290         uint16_t        cnt, i;
 291         uint16_t        req_cnt;
 292         uint16_t        tot_dsds;
 293         uint16_t        avail_dsds;
 294         uint32_t        *cur_dsd;
 295         struct req_que *req = NULL;
 296         struct scsi_qla_host *vha = sp->fcport->vha;
 297         struct qla_hw_data *ha = vha->hw;
 298         struct qla_qpair *qpair = sp->qpair;
 299         struct srb_iocb *nvme = &sp->u.iocb_cmd;
 300         struct scatterlist *sgl, *sg;
 301         struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
 302         uint32_t        rval = QLA_SUCCESS;
 303
 304         /* Setup qpair pointers */
 305         req = qpair->req;
 306         tot_dsds = fd->sg_cnt;
 307
 308         /* Acquire qpair specific lock */
 309         spin_lock_irqsave(&qpair->qp_lock, flags);
 310
 311         /* Check for room in outstanding command list. */
 312         handle = req->current_outstanding_cmd;
 313         for (index = 1; index < req->num_outstanding_cmds; index++) {
 314                 handle++;
 315                 if (handle == req->num_outstanding_cmds)
 316                         handle = 1;
 317                 if (!req->outstanding_cmds[handle])
 318                         break;
 319         }
 320
 321         if (index == req->num_outstanding_cmds) {
 322                 rval = -EBUSY;
 323                 goto queuing_error;
 324         }
 325         req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
 326         if (req->cnt < (req_cnt + 2)) {
 327                 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
 328                     RD_REG_DWORD_RELAXED(req->req_q_out);
 329
 330                 if (req->ring_index < cnt)
 331                         req->cnt = cnt - req->ring_index;
 332                 else
 333                         req->cnt = req->length - (req->ring_index - cnt);
 334
 335                 if (req->cnt < (req_cnt + 2)){
 336                         rval = -EBUSY;
 337                         goto queuing_error;
 338                 }
 339         }
 340
 341         if (unlikely(!fd->sqid)) {
 342                 struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
 343                 if (cmd->sqe.common.opcode == nvme_admin_async_event) {
 344                         nvme->u.nvme.aen_op = 1;
 345                         atomic_inc(&ha->nvme_active_aen_cnt);
 346                 }
 347         }
 348
 349         /* Build command packet. */
 350         req->current_outstanding_cmd = handle;
 351         req->outstanding_cmds[handle] = sp;
 352         sp->handle = handle;
 353         req->cnt -= req_cnt;
 354
 355         cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
 356         cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
 357
 358         /* Zero out remaining portion of packet. */
 359         clr_ptr = (uint32_t *)cmd_pkt + 2;
 360         memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
 361
 362         cmd_pkt->entry_status = 0;
 363
 364         /* Update entry type to indicate Command NVME IOCB */
 365         cmd_pkt->entry_type = COMMAND_NVME;
 366
 367         /* No data transfer how do we check buffer len == 0?? */
 368         if (fd->io_dir == NVMEFC_FCP_READ) {
 369                 cmd_pkt->control_flags = CF_READ_DATA;
 370                 vha->qla_stats.input_bytes += fd->payload_length;
 371                 vha->qla_stats.input_requests++;
 372         } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
 373                 cmd_pkt->control_flags = CF_WRITE_DATA;
 374                 if ((vha->flags.nvme_first_burst) &&
 375                     (sp->fcport->nvme_prli_service_param &
 376                         NVME_PRLI_SP_FIRST_BURST)) {
 377                         if ((fd->payload_length <=
 378                             sp->fcport->nvme_first_burst_size) ||
 379                                 (sp->fcport->nvme_first_burst_size == 0))
 380                                 cmd_pkt->control_flags |=
 381                                     CF_NVME_FIRST_BURST_ENABLE;
 382                 }
 383                 vha->qla_stats.output_bytes += fd->payload_length;
 384                 vha->qla_stats.output_requests++;
 385         } else if (fd->io_dir == 0) {
 386                 cmd_pkt->control_flags = 0;
 387         }
 388
 389         /* Set NPORT-ID */
 390         cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
 391         cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
 392         cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
 393         cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
 394         cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
 395
 396         /* NVME RSP IU */
 397         cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
 398         cmd_pkt->nvme_rsp_dseg_address[0] = cpu_to_le32(LSD(fd->rspdma));
 399         cmd_pkt->nvme_rsp_dseg_address[1] = cpu_to_le32(MSD(fd->rspdma));
 400
 401         /* NVME CNMD IU */
 402         cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
 403         cmd_pkt->nvme_cmnd_dseg_address[0] = cpu_to_le32(LSD(fd->cmddma));
 404         cmd_pkt->nvme_cmnd_dseg_address[1] = cpu_to_le32(MSD(fd->cmddma));
 405
 406         cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
 407         cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
 408
 409         /* One DSD is available in the Command Type NVME IOCB */
 410         avail_dsds = 1;
 411         cur_dsd = (uint32_t *)&cmd_pkt->nvme_data_dseg_address[0];
 412         sgl = fd->first_sgl;
 413
 414         /* Load data segments */
 415         for_each_sg(sgl, sg, tot_dsds, i) {
 416                 dma_addr_t      sle_dma;
 417                 cont_a64_entry_t *cont_pkt;
 418
 419                 /* Allocate additional continuation packets? */
 420                 if (avail_dsds == 0) {
 421                         /*
 422                          * Five DSDs are available in the Continuation
 423                          * Type 1 IOCB.
 424                          */
 425
 426                         /* Adjust ring index */
 427                         req->ring_index++;
 428                         if (req->ring_index == req->length) {
 429                                 req->ring_index = 0;
 430                                 req->ring_ptr = req->ring;
 431                         } else {
 432                                 req->ring_ptr++;
 433                         }
 434                         cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
 435                         *((uint32_t *)(&cont_pkt->entry_type)) =
 436                             cpu_to_le32(CONTINUE_A64_TYPE);
 437
 438                         cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
 439                         avail_dsds = 5;
 440                 }
 441
 442                 sle_dma = sg_dma_address(sg);
 443                 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
 444                 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
 445                 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
 446                 avail_dsds--;
 447         }
 448
 449         /* Set total entry count. */
 450         cmd_pkt->entry_count = (uint8_t)req_cnt;
 451         wmb();
 452
 453         /* Adjust ring index. */
 454         req->ring_index++;
 455         if (req->ring_index == req->length) {
 456                 req->ring_index = 0;
 457                 req->ring_ptr = req->ring;
 458         } else {
 459                 req->ring_ptr++;
 460         }
 461
 462         /* Set chip new ring index. */
 463         WRT_REG_DWORD(req->req_q_in, req->ring_index);
 464
 465 queuing_error:
 466         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 467         return rval;
 468 }
 469
 470 /* Post a command */
 471 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
 472     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 473     struct nvmefc_fcp_req *fd)
 474 {
 475         fc_port_t *fcport;
 476         struct srb_iocb *nvme;
 477         struct scsi_qla_host *vha;
 478         int rval = -ENODEV;
 479         srb_t *sp;
 480         struct qla_qpair *qpair = hw_queue_handle;
 481         struct nvme_private *priv = fd->private;
 482         struct qla_nvme_rport *qla_rport = rport->private;
 483
 484         fcport = qla_rport->fcport;
 485
 486         vha = fcport->vha;
 487
 488         if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 489                 return rval;
 490
 491         /*
 492          * If we know the dev is going away while the transport is still sending
 493          * IO's return busy back to stall the IO Q.  This happens when the
 494          * link goes away and fw hasn't notified us yet, but IO's are being
 495          * returned. If the dev comes back quickly we won't exhaust the IO
 496          * retry count at the core.
 497          */
 498         if (fcport->nvme_flag & NVME_FLAG_RESETTING)
 499                 return -EBUSY;
 500
 501         /* Alloc SRB structure */
 502         sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
 503         if (!sp)
 504                 return -EBUSY;
 505
 506         atomic_set(&sp->ref_count, 1);
 507         init_waitqueue_head(&sp->nvme_ls_waitq);
 508         priv->sp = sp;
 509         sp->type = SRB_NVME_CMD;
 510         sp->name = "nvme_cmd";
 511         sp->done = qla_nvme_sp_done;
 512         sp->qpair = qpair;
 513         sp->vha = vha;
 514         nvme = &sp->u.iocb_cmd;
 515         nvme->u.nvme.desc = fd;
 516
 517         rval = qla2x00_start_nvme_mq(sp);
 518         if (rval != QLA_SUCCESS) {
 519                 ql_log(ql_log_warn, vha, 0x212d,
 520                     "qla2x00_start_nvme_mq failed = %d\n", rval);
 521                 atomic_dec(&sp->ref_count);
 522                 wake_up(&sp->nvme_ls_waitq);
 523         }
 524
 525         return rval;
 526 }
 527
 528 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
 529 {
 530         struct scsi_qla_host *vha = lport->private;
 531
 532         ql_log(ql_log_info, vha, 0x210f,
 533             "localport delete of %p completed.\n", vha->nvme_local_port);
 534         vha->nvme_local_port = NULL;
 535         complete(&vha->nvme_del_done);
 536 }
 537
 538 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
 539 {
 540         fc_port_t *fcport;
 541         struct qla_nvme_rport *qla_rport = rport->private, *trport;
 542
 543         fcport = qla_rport->fcport;
 544         fcport->nvme_remote_port = NULL;
 545         fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
 546
 547         list_for_each_entry_safe(qla_rport, trport,
 548             &fcport->vha->nvme_rport_list, list) {
 549                 if (qla_rport->fcport == fcport) {
 550                         list_del(&qla_rport->list);
 551                         break;
 552                 }
 553         }
 554         complete(&fcport->nvme_del_done);
 555
 556         if (!test_bit(UNLOADING, &fcport->vha->dpc_flags)) {
 557                 INIT_WORK(&fcport->free_work, qlt_free_session_done);
 558                 schedule_work(&fcport->free_work);
 559         }
 560
 561         fcport->nvme_flag &= ~NVME_FLAG_DELETING;
 562         ql_log(ql_log_info, fcport->vha, 0x2110,
 563             "remoteport_delete of %p completed.\n", fcport);
 564 }
 565
 566 static struct nvme_fc_port_template qla_nvme_fc_transport = {
 567         .localport_delete = qla_nvme_localport_delete,
 568         .remoteport_delete = qla_nvme_remoteport_delete,
 569         .create_queue   = qla_nvme_alloc_queue,
 570         .delete_queue   = NULL,
 571         .ls_req         = qla_nvme_ls_req,
 572         .ls_abort       = qla_nvme_ls_abort,
 573         .fcp_io         = qla_nvme_post_cmd,
 574         .fcp_abort      = qla_nvme_fcp_abort,
 575         .max_hw_queues  = 8,
 576         .max_sgl_segments = 128,
 577         .max_dif_sgl_segments = 64,
 578         .dma_boundary = 0xFFFFFFFF,
 579         .local_priv_sz  = 8,
 580         .remote_priv_sz = sizeof(struct qla_nvme_rport),
 581         .lsrqst_priv_sz = sizeof(struct nvme_private),
 582         .fcprqst_priv_sz = sizeof(struct nvme_private),
 583 };
 584
 585 #define NVME_ABORT_POLLING_PERIOD    2
 586 static int qla_nvme_wait_on_command(srb_t *sp)
 587 {
 588         int ret = QLA_SUCCESS;
 589
 590         wait_event_timeout(sp->nvme_ls_waitq, (atomic_read(&sp->ref_count) > 1),
 591             NVME_ABORT_POLLING_PERIOD*HZ);
 592
 593         if (atomic_read(&sp->ref_count) > 1)
 594                 ret = QLA_FUNCTION_FAILED;
 595
 596         return ret;
 597 }
 598
 599 void qla_nvme_abort(struct qla_hw_data *ha, struct srb *sp, int res)
 600 {
 601         int rval;
 602
 603         if (ha->flags.fw_started) {
 604                 rval = ha->isp_ops->abort_command(sp);
 605                 if (!rval && !qla_nvme_wait_on_command(sp))
 606                         ql_log(ql_log_warn, NULL, 0x2112,
 607                             "timed out waiting on sp=%p\n", sp);
 608         } else {
 609                 sp->done(sp, res);
 610         }
 611 }
 612
 613 static void qla_nvme_unregister_remote_port(struct work_struct *work)
 614 {
 615         struct fc_port *fcport = container_of(work, struct fc_port,
 616             nvme_del_work);
 617         struct qla_nvme_rport *qla_rport, *trport;
 618         scsi_qla_host_t *base_vha;
 619
 620         if (!IS_ENABLED(CONFIG_NVME_FC))
 621                 return;
 622
 623         ql_log(ql_log_warn, NULL, 0x2112,
 624             "%s: unregister remoteport on %p\n",__func__, fcport);
 625
 626         base_vha = pci_get_drvdata(fcport->vha->hw->pdev);
 627         if (test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags)) {
 628                 ql_dbg(ql_dbg_disc, fcport->vha, 0x2114,
 629                     "%s: Notify FC-NVMe transport, set devloss=0\n",
 630                     __func__);
 631
 632                 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
 633         }
 634
 635         list_for_each_entry_safe(qla_rport, trport,
 636             &fcport->vha->nvme_rport_list, list) {
 637                 if (qla_rport->fcport == fcport) {
 638                         ql_log(ql_log_info, fcport->vha, 0x2113,
 639                             "%s: fcport=%p\n", __func__, fcport);
 640                         init_completion(&fcport->nvme_del_done);
 641                         nvme_fc_unregister_remoteport(
 642                             fcport->nvme_remote_port);
 643                         wait_for_completion(&fcport->nvme_del_done);
 644                         break;
 645                 }
 646         }
 647 }
 648
 649 void qla_nvme_delete(struct scsi_qla_host *vha)
 650 {
 651         int nv_ret;
 652
 653         if (!IS_ENABLED(CONFIG_NVME_FC))
 654                 return;
 655
 656         if (vha->nvme_local_port) {
 657                 init_completion(&vha->nvme_del_done);
 658                 ql_log(ql_log_info, vha, 0x2116,
 659                         "unregister localport=%p\n",
 660                         vha->nvme_local_port);
 661                 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
 662                 if (nv_ret)
 663                         ql_log(ql_log_info, vha, 0x2115,
 664                             "Unregister of localport failed\n");
 665                 else
 666                         wait_for_completion(&vha->nvme_del_done);
 667         }
 668 }
 669
 670 int qla_nvme_register_hba(struct scsi_qla_host *vha)
 671 {
 672         struct nvme_fc_port_template *tmpl;
 673         struct qla_hw_data *ha;
 674         struct nvme_fc_port_info pinfo;
 675         int ret = EINVAL;
 676
 677         if (!IS_ENABLED(CONFIG_NVME_FC))
 678                 return ret;
 679
 680         ha = vha->hw;
 681         tmpl = &qla_nvme_fc_transport;
 682
 683         WARN_ON(vha->nvme_local_port);
 684         WARN_ON(ha->max_req_queues < 3);
 685
 686         qla_nvme_fc_transport.max_hw_queues =
 687             min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
 688                 (uint8_t)(ha->max_req_queues - 2));
 689
 690         pinfo.node_name = wwn_to_u64(vha->node_name);
 691         pinfo.port_name = wwn_to_u64(vha->port_name);
 692         pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
 693         pinfo.port_id = vha->d_id.b24;
 694
 695         ql_log(ql_log_info, vha, 0xffff,
 696             "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
 697             pinfo.node_name, pinfo.port_name, pinfo.port_id);
 698         qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
 699
 700         ret = nvme_fc_register_localport(&pinfo, tmpl,
 701             get_device(&ha->pdev->dev), &vha->nvme_local_port);
 702         if (ret) {
 703                 ql_log(ql_log_warn, vha, 0xffff,
 704                     "register_localport failed: ret=%x\n", ret);
 705         } else {
 706                 vha->nvme_local_port->private = vha;
 707         }
 708
 709         return ret;
 710 }