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 (!(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         INIT_WORK(&fcport->nvme_del_work, qla_nvme_unregister_remote_port);
  39         fcport->nvme_flag &= ~NVME_FLAG_RESETTING;
  40
  41         memset(&req, 0, sizeof(struct nvme_fc_port_info));
  42         req.port_name = wwn_to_u64(fcport->port_name);
  43         req.node_name = wwn_to_u64(fcport->node_name);
  44         req.port_role = 0;
  45         req.dev_loss_tmo = NVME_FC_DEV_LOSS_TMO;
  46
  47         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR)
  48                 req.port_role = FC_PORT_ROLE_NVME_INITIATOR;
  49
  50         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_TARGET)
  51                 req.port_role |= FC_PORT_ROLE_NVME_TARGET;
  52
  53         if (fcport->nvme_prli_service_param & NVME_PRLI_SP_DISCOVERY)
  54                 req.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
  55
  56         req.port_id = fcport->d_id.b24;
  57
  58         ql_log(ql_log_info, vha, 0x2102,
  59             "%s: traddr=nn-0x%016llx:pn-0x%016llx PortID:%06x\n",
  60             __func__, req.node_name, req.port_name,
  61             req.port_id);
  62
  63         ret = nvme_fc_register_remoteport(vha->nvme_local_port, &req,
  64             &fcport->nvme_remote_port);
  65         if (ret) {
  66                 ql_log(ql_log_warn, vha, 0x212e,
  67                     "Failed to register remote port. Transport returned %d\n",
  68                     ret);
  69                 return ret;
  70         }
  71
  72         rport = fcport->nvme_remote_port->private;
  73         rport->fcport = fcport;
  74         list_add_tail(&rport->list, &vha->nvme_rport_list);
  75
  76         fcport->nvme_flag |= NVME_FLAG_REGISTERED;
  77         return 0;
  78 }
  79
  80 /* Allocate a queue for NVMe traffic */
  81 static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport,
  82     unsigned int qidx, u16 qsize, void **handle)
  83 {
  84         struct scsi_qla_host *vha;
  85         struct qla_hw_data *ha;
  86         struct qla_qpair *qpair;
  87
  88         if (!qidx)
  89                 qidx++;
  90
  91         vha = (struct scsi_qla_host *)lport->private;
  92         ha = vha->hw;
  93
  94         ql_log(ql_log_info, vha, 0x2104,
  95             "%s: handle %p, idx =%d, qsize %d\n",
  96             __func__, handle, qidx, qsize);
  97
  98         if (qidx > qla_nvme_fc_transport.max_hw_queues) {
  99                 ql_log(ql_log_warn, vha, 0x212f,
 100                     "%s: Illegal qidx=%d. Max=%d\n",
 101                     __func__, qidx, qla_nvme_fc_transport.max_hw_queues);
 102                 return -EINVAL;
 103         }
 104
 105         if (ha->queue_pair_map[qidx]) {
 106                 *handle = ha->queue_pair_map[qidx];
 107                 ql_log(ql_log_info, vha, 0x2121,
 108                     "Returning existing qpair of %p for idx=%x\n",
 109                     *handle, qidx);
 110                 return 0;
 111         }
 112
 113         qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
 114         if (qpair == NULL) {
 115                 ql_log(ql_log_warn, vha, 0x2122,
 116                     "Failed to allocate qpair\n");
 117                 return -EINVAL;
 118         }
 119         *handle = qpair;
 120
 121         return 0;
 122 }
 123
 124 static void qla_nvme_sp_ls_done(void *ptr, int res)
 125 {
 126         srb_t *sp = ptr;
 127         struct srb_iocb *nvme;
 128         struct nvmefc_ls_req   *fd;
 129         struct nvme_private *priv;
 130
 131         if (atomic_read(&sp->ref_count) == 0) {
 132                 ql_log(ql_log_warn, sp->fcport->vha, 0x2123,
 133                     "SP reference-count to ZERO on LS_done -- sp=%p.\n", sp);
 134                 return;
 135         }
 136
 137         if (!atomic_dec_and_test(&sp->ref_count))
 138                 return;
 139
 140         if (res)
 141                 res = -EINVAL;
 142
 143         nvme = &sp->u.iocb_cmd;
 144         fd = nvme->u.nvme.desc;
 145         priv = fd->private;
 146         priv->comp_status = res;
 147         schedule_work(&priv->ls_work);
 148         /* work schedule doesn't need the sp */
 149         qla2x00_rel_sp(sp);
 150 }
 151
 152 static void qla_nvme_sp_done(void *ptr, int res)
 153 {
 154         srb_t *sp = ptr;
 155         struct srb_iocb *nvme;
 156         struct nvmefc_fcp_req *fd;
 157
 158         nvme = &sp->u.iocb_cmd;
 159         fd = nvme->u.nvme.desc;
 160
 161         if (!atomic_dec_and_test(&sp->ref_count))
 162                 return;
 163
 164         if (res == QLA_SUCCESS)
 165                 fd->status = 0;
 166         else
 167                 fd->status = NVME_SC_INTERNAL;
 168
 169         fd->rcv_rsplen = nvme->u.nvme.rsp_pyld_len;
 170         fd->done(fd);
 171         qla2xxx_rel_qpair_sp(sp->qpair, sp);
 172
 173         return;
 174 }
 175
 176 static void qla_nvme_abort_work(struct work_struct *work)
 177 {
 178         struct nvme_private *priv =
 179                 container_of(work, struct nvme_private, abort_work);
 180         srb_t *sp = priv->sp;
 181         fc_port_t *fcport = sp->fcport;
 182         struct qla_hw_data *ha = fcport->vha->hw;
 183         int rval;
 184
 185         rval = ha->isp_ops->abort_command(sp);
 186
 187         ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
 188             "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
 189             __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
 190             sp, sp->handle, fcport, rval);
 191 }
 192
 193 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
 194     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 195 {
 196         struct nvme_private *priv = fd->private;
 197
 198         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 199         schedule_work(&priv->abort_work);
 200 }
 201
 202 static void qla_nvme_ls_complete(struct work_struct *work)
 203 {
 204         struct nvme_private *priv =
 205             container_of(work, struct nvme_private, ls_work);
 206         struct nvmefc_ls_req *fd = priv->fd;
 207
 208         fd->done(fd, priv->comp_status);
 209 }
 210
 211 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
 212     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 213 {
 214         struct qla_nvme_rport *qla_rport = rport->private;
 215         fc_port_t *fcport = qla_rport->fcport;
 216         struct srb_iocb   *nvme;
 217         struct nvme_private *priv = fd->private;
 218         struct scsi_qla_host *vha;
 219         int     rval = QLA_FUNCTION_FAILED;
 220         struct qla_hw_data *ha;
 221         srb_t           *sp;
 222
 223         vha = fcport->vha;
 224         ha = vha->hw;
 225         /* Alloc SRB structure */
 226         sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
 227         if (!sp)
 228                 return rval;
 229
 230         sp->type = SRB_NVME_LS;
 231         sp->name = "nvme_ls";
 232         sp->done = qla_nvme_sp_ls_done;
 233         atomic_set(&sp->ref_count, 1);
 234         nvme = &sp->u.iocb_cmd;
 235         priv->sp = sp;
 236         priv->fd = fd;
 237         INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
 238         nvme->u.nvme.desc = fd;
 239         nvme->u.nvme.dir = 0;
 240         nvme->u.nvme.dl = 0;
 241         nvme->u.nvme.cmd_len = fd->rqstlen;
 242         nvme->u.nvme.rsp_len = fd->rsplen;
 243         nvme->u.nvme.rsp_dma = fd->rspdma;
 244         nvme->u.nvme.timeout_sec = fd->timeout;
 245         nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
 246             fd->rqstlen, DMA_TO_DEVICE);
 247         dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
 248             fd->rqstlen, DMA_TO_DEVICE);
 249
 250         rval = qla2x00_start_sp(sp);
 251         if (rval != QLA_SUCCESS) {
 252                 ql_log(ql_log_warn, vha, 0x700e,
 253                     "qla2x00_start_sp failed = %d\n", rval);
 254                 atomic_dec(&sp->ref_count);
 255                 wake_up(&sp->nvme_ls_waitq);
 256                 return rval;
 257         }
 258
 259         return rval;
 260 }
 261
 262 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
 263     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 264     struct nvmefc_fcp_req *fd)
 265 {
 266         struct nvme_private *priv = fd->private;
 267
 268         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 269         schedule_work(&priv->abort_work);
 270 }
 271
 272 static void qla_nvme_poll(struct nvme_fc_local_port *lport, void *hw_queue_handle)
 273 {
 274         struct qla_qpair *qpair = hw_queue_handle;
 275         unsigned long flags;
 276         struct scsi_qla_host *vha = lport->private;
 277
 278         spin_lock_irqsave(&qpair->qp_lock, flags);
 279         qla24xx_process_response_queue(vha, qpair->rsp);
 280         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 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 =
 370                     cpu_to_le16(CF_READ_DATA | CF_NVME_ENABLE);
 371                 vha->qla_stats.input_bytes += fd->payload_length;
 372                 vha->qla_stats.input_requests++;
 373         } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
 374                 cmd_pkt->control_flags =
 375                     cpu_to_le16(CF_WRITE_DATA | CF_NVME_ENABLE);
 376                 vha->qla_stats.output_bytes += fd->payload_length;
 377                 vha->qla_stats.output_requests++;
 378         } else if (fd->io_dir == 0) {
 379                 cmd_pkt->control_flags = cpu_to_le16(CF_NVME_ENABLE);
 380         }
 381
 382         /* Set NPORT-ID */
 383         cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
 384         cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
 385         cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
 386         cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
 387         cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
 388
 389         /* NVME RSP IU */
 390         cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
 391         cmd_pkt->nvme_rsp_dseg_address[0] = cpu_to_le32(LSD(fd->rspdma));
 392         cmd_pkt->nvme_rsp_dseg_address[1] = cpu_to_le32(MSD(fd->rspdma));
 393
 394         /* NVME CNMD IU */
 395         cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
 396         cmd_pkt->nvme_cmnd_dseg_address[0] = cpu_to_le32(LSD(fd->cmddma));
 397         cmd_pkt->nvme_cmnd_dseg_address[1] = cpu_to_le32(MSD(fd->cmddma));
 398
 399         cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
 400         cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
 401
 402         /* One DSD is available in the Command Type NVME IOCB */
 403         avail_dsds = 1;
 404         cur_dsd = (uint32_t *)&cmd_pkt->nvme_data_dseg_address[0];
 405         sgl = fd->first_sgl;
 406
 407         /* Load data segments */
 408         for_each_sg(sgl, sg, tot_dsds, i) {
 409                 dma_addr_t      sle_dma;
 410                 cont_a64_entry_t *cont_pkt;
 411
 412                 /* Allocate additional continuation packets? */
 413                 if (avail_dsds == 0) {
 414                         /*
 415                          * Five DSDs are available in the Continuation
 416                          * Type 1 IOCB.
 417                          */
 418
 419                         /* Adjust ring index */
 420                         req->ring_index++;
 421                         if (req->ring_index == req->length) {
 422                                 req->ring_index = 0;
 423                                 req->ring_ptr = req->ring;
 424                         } else {
 425                                 req->ring_ptr++;
 426                         }
 427                         cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
 428                         *((uint32_t *)(&cont_pkt->entry_type)) =
 429                             cpu_to_le32(CONTINUE_A64_TYPE);
 430
 431                         cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
 432                         avail_dsds = 5;
 433                 }
 434
 435                 sle_dma = sg_dma_address(sg);
 436                 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
 437                 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
 438                 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
 439                 avail_dsds--;
 440         }
 441
 442         /* Set total entry count. */
 443         cmd_pkt->entry_count = (uint8_t)req_cnt;
 444         wmb();
 445
 446         /* Adjust ring index. */
 447         req->ring_index++;
 448         if (req->ring_index == req->length) {
 449                 req->ring_index = 0;
 450                 req->ring_ptr = req->ring;
 451         } else {
 452                 req->ring_ptr++;
 453         }
 454
 455         /* Set chip new ring index. */
 456         WRT_REG_DWORD(req->req_q_in, req->ring_index);
 457
 458 queuing_error:
 459         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 460         return rval;
 461 }
 462
 463 /* Post a command */
 464 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
 465     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 466     struct nvmefc_fcp_req *fd)
 467 {
 468         fc_port_t *fcport;
 469         struct srb_iocb *nvme;
 470         struct scsi_qla_host *vha;
 471         int rval = -ENODEV;
 472         srb_t *sp;
 473         struct qla_qpair *qpair = hw_queue_handle;
 474         struct nvme_private *priv;
 475         struct qla_nvme_rport *qla_rport = rport->private;
 476
 477         if (!fd || !qpair) {
 478                 ql_log(ql_log_warn, NULL, 0x2134,
 479                     "NO NVMe request or Queue Handle\n");
 480                 return rval;
 481         }
 482
 483         priv = fd->private;
 484         fcport = qla_rport->fcport;
 485         if (!fcport) {
 486                 ql_log(ql_log_warn, NULL, 0x210e, "No fcport ptr\n");
 487                 return rval;
 488         }
 489
 490         vha = fcport->vha;
 491
 492         if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 493                 return rval;
 494
 495         /*
 496          * If we know the dev is going away while the transport is still sending
 497          * IO's return busy back to stall the IO Q.  This happens when the
 498          * link goes away and fw hasn't notified us yet, but IO's are being
 499          * returned. If the dev comes back quickly we won't exhaust the IO
 500          * retry count at the core.
 501          */
 502         if (fcport->nvme_flag & NVME_FLAG_RESETTING)
 503                 return -EBUSY;
 504
 505         /* Alloc SRB structure */
 506         sp = qla2xxx_get_qpair_sp(qpair, fcport, GFP_ATOMIC);
 507         if (!sp)
 508                 return -EBUSY;
 509
 510         atomic_set(&sp->ref_count, 1);
 511         init_waitqueue_head(&sp->nvme_ls_waitq);
 512         priv->sp = sp;
 513         sp->type = SRB_NVME_CMD;
 514         sp->name = "nvme_cmd";
 515         sp->done = qla_nvme_sp_done;
 516         sp->qpair = qpair;
 517         nvme = &sp->u.iocb_cmd;
 518         nvme->u.nvme.desc = fd;
 519
 520         rval = qla2x00_start_nvme_mq(sp);
 521         if (rval != QLA_SUCCESS) {
 522                 ql_log(ql_log_warn, vha, 0x212d,
 523                     "qla2x00_start_nvme_mq failed = %d\n", rval);
 524                 atomic_dec(&sp->ref_count);
 525                 wake_up(&sp->nvme_ls_waitq);
 526         }
 527
 528         return rval;
 529 }
 530
 531 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
 532 {
 533         struct scsi_qla_host *vha = lport->private;
 534
 535         ql_log(ql_log_info, vha, 0x210f,
 536             "localport delete of %p completed.\n", vha->nvme_local_port);
 537         vha->nvme_local_port = NULL;
 538         complete(&vha->nvme_del_done);
 539 }
 540
 541 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
 542 {
 543         fc_port_t *fcport;
 544         struct qla_nvme_rport *qla_rport = rport->private, *trport;
 545
 546         fcport = qla_rport->fcport;
 547         fcport->nvme_remote_port = NULL;
 548         fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
 549
 550         list_for_each_entry_safe(qla_rport, trport,
 551             &fcport->vha->nvme_rport_list, list) {
 552                 if (qla_rport->fcport == fcport) {
 553                         list_del(&qla_rport->list);
 554                         break;
 555                 }
 556         }
 557         complete(&fcport->nvme_del_done);
 558
 559         if (!test_bit(UNLOADING, &fcport->vha->dpc_flags)) {
 560                 INIT_WORK(&fcport->free_work, qlt_free_session_done);
 561                 schedule_work(&fcport->free_work);
 562         }
 563
 564         fcport->nvme_flag &= ~(NVME_FLAG_REGISTERED | NVME_FLAG_DELETING);
 565         ql_log(ql_log_info, fcport->vha, 0x2110,
 566             "remoteport_delete of %p completed.\n", fcport);
 567 }
 568
 569 static struct nvme_fc_port_template qla_nvme_fc_transport = {
 570         .localport_delete = qla_nvme_localport_delete,
 571         .remoteport_delete = qla_nvme_remoteport_delete,
 572         .create_queue   = qla_nvme_alloc_queue,
 573         .delete_queue   = NULL,
 574         .ls_req         = qla_nvme_ls_req,
 575         .ls_abort       = qla_nvme_ls_abort,
 576         .fcp_io         = qla_nvme_post_cmd,
 577         .fcp_abort      = qla_nvme_fcp_abort,
 578         .poll_queue     = qla_nvme_poll,
 579         .max_hw_queues  = 8,
 580         .max_sgl_segments = 128,
 581         .max_dif_sgl_segments = 64,
 582         .dma_boundary = 0xFFFFFFFF,
 583         .local_priv_sz  = 8,
 584         .remote_priv_sz = sizeof(struct qla_nvme_rport),
 585         .lsrqst_priv_sz = sizeof(struct nvme_private),
 586         .fcprqst_priv_sz = sizeof(struct nvme_private),
 587 };
 588
 589 #define NVME_ABORT_POLLING_PERIOD    2
 590 static int qla_nvme_wait_on_command(srb_t *sp)
 591 {
 592         int ret = QLA_SUCCESS;
 593
 594         wait_event_timeout(sp->nvme_ls_waitq, (atomic_read(&sp->ref_count) > 1),
 595             NVME_ABORT_POLLING_PERIOD*HZ);
 596
 597         if (atomic_read(&sp->ref_count) > 1)
 598                 ret = QLA_FUNCTION_FAILED;
 599
 600         return ret;
 601 }
 602
 603 void qla_nvme_abort(struct qla_hw_data *ha, struct srb *sp, int res)
 604 {
 605         int rval;
 606
 607         if (!test_bit(ABORT_ISP_ACTIVE, &sp->vha->dpc_flags)) {
 608                 rval = ha->isp_ops->abort_command(sp);
 609                 if (!rval && !qla_nvme_wait_on_command(sp))
 610                         ql_log(ql_log_warn, NULL, 0x2112,
 611                             "timed out waiting on sp=%p\n", sp);
 612         } else {
 613                 sp->done(sp, res);
 614         }
 615 }
 616
 617 static void qla_nvme_unregister_remote_port(struct work_struct *work)
 618 {
 619         struct fc_port *fcport = container_of(work, struct fc_port,
 620             nvme_del_work);
 621         struct qla_nvme_rport *qla_rport, *trport;
 622
 623         if (!IS_ENABLED(CONFIG_NVME_FC))
 624                 return;
 625
 626         ql_log(ql_log_warn, NULL, 0x2112,
 627             "%s: unregister remoteport on %p\n",__func__, fcport);
 628
 629         list_for_each_entry_safe(qla_rport, trport,
 630             &fcport->vha->nvme_rport_list, list) {
 631                 if (qla_rport->fcport == fcport) {
 632                         ql_log(ql_log_info, fcport->vha, 0x2113,
 633                             "%s: fcport=%p\n", __func__, fcport);
 634                         init_completion(&fcport->nvme_del_done);
 635                         nvme_fc_unregister_remoteport(
 636                             fcport->nvme_remote_port);
 637                         wait_for_completion(&fcport->nvme_del_done);
 638                         break;
 639                 }
 640         }
 641 }
 642
 643 void qla_nvme_delete(struct scsi_qla_host *vha)
 644 {
 645         struct qla_nvme_rport *qla_rport, *trport;
 646         fc_port_t *fcport;
 647         int nv_ret;
 648
 649         if (!IS_ENABLED(CONFIG_NVME_FC))
 650                 return;
 651
 652         list_for_each_entry_safe(qla_rport, trport,
 653             &vha->nvme_rport_list, list) {
 654                 fcport = qla_rport->fcport;
 655
 656                 ql_log(ql_log_info, fcport->vha, 0x2114, "%s: fcport=%p\n",
 657                     __func__, fcport);
 658
 659                 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
 660                 init_completion(&fcport->nvme_del_done);
 661                 nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
 662                 wait_for_completion(&fcport->nvme_del_done);
 663         }
 664
 665         if (vha->nvme_local_port) {
 666                 init_completion(&vha->nvme_del_done);
 667                 ql_log(ql_log_info, vha, 0x2116,
 668                         "unregister localport=%p\n",
 669                         vha->nvme_local_port);
 670                 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
 671                 if (nv_ret)
 672                         ql_log(ql_log_info, vha, 0x2115,
 673                             "Unregister of localport failed\n");
 674                 else
 675                         wait_for_completion(&vha->nvme_del_done);
 676         }
 677 }
 678
 679 void qla_nvme_register_hba(struct scsi_qla_host *vha)
 680 {
 681         struct nvme_fc_port_template *tmpl;
 682         struct qla_hw_data *ha;
 683         struct nvme_fc_port_info pinfo;
 684         int ret;
 685
 686         if (!IS_ENABLED(CONFIG_NVME_FC))
 687                 return;
 688
 689         ha = vha->hw;
 690         tmpl = &qla_nvme_fc_transport;
 691
 692         WARN_ON(vha->nvme_local_port);
 693         WARN_ON(ha->max_req_queues < 3);
 694
 695         qla_nvme_fc_transport.max_hw_queues =
 696             min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
 697                 (uint8_t)(ha->max_req_queues - 2));
 698
 699         pinfo.node_name = wwn_to_u64(vha->node_name);
 700         pinfo.port_name = wwn_to_u64(vha->port_name);
 701         pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
 702         pinfo.port_id = vha->d_id.b24;
 703
 704         ql_log(ql_log_info, vha, 0xffff,
 705             "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
 706             pinfo.node_name, pinfo.port_name, pinfo.port_id);
 707         qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
 708
 709         ret = nvme_fc_register_localport(&pinfo, tmpl,
 710             get_device(&ha->pdev->dev), &vha->nvme_local_port);
 711         if (ret) {
 712                 ql_log(ql_log_warn, vha, 0xffff,
 713                     "register_localport failed: ret=%x\n", ret);
 714                 return;
 715         }
 716         vha->nvme_local_port->private = vha;
 717 }