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         /* Map admin queue and 1st IO queue to index 0 */
  92         if (qidx)
  93                 qidx--;
  94
  95         vha = (struct scsi_qla_host *)lport->private;
  96         ha = vha->hw;
  97
  98         ql_log(ql_log_info, vha, 0x2104,
  99             "%s: handle %p, idx =%d, qsize %d\n",
 100             __func__, handle, qidx, qsize);
 101
 102         if (qidx > qla_nvme_fc_transport.max_hw_queues) {
 103                 ql_log(ql_log_warn, vha, 0x212f,
 104                     "%s: Illegal qidx=%d. Max=%d\n",
 105                     __func__, qidx, qla_nvme_fc_transport.max_hw_queues);
 106                 return -EINVAL;
 107         }
 108
 109         if (ha->queue_pair_map[qidx]) {
 110                 *handle = ha->queue_pair_map[qidx];
 111                 ql_log(ql_log_info, vha, 0x2121,
 112                     "Returning existing qpair of %p for idx=%x\n",
 113                     *handle, qidx);
 114                 return 0;
 115         }
 116
 117         qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
 118         if (qpair == NULL) {
 119                 ql_log(ql_log_warn, vha, 0x2122,
 120                     "Failed to allocate qpair\n");
 121                 return -EINVAL;
 122         }
 123         *handle = qpair;
 124
 125         return 0;
 126 }
 127
 128 static void qla_nvme_sp_ls_done(void *ptr, int res)
 129 {
 130         srb_t *sp = ptr;
 131         struct srb_iocb *nvme;
 132         struct nvmefc_ls_req   *fd;
 133         struct nvme_private *priv;
 134
 135         if (atomic_read(&sp->ref_count) == 0) {
 136                 ql_log(ql_log_warn, sp->fcport->vha, 0x2123,
 137                     "SP reference-count to ZERO on LS_done -- sp=%p.\n", sp);
 138                 return;
 139         }
 140
 141         if (!atomic_dec_and_test(&sp->ref_count))
 142                 return;
 143
 144         if (res)
 145                 res = -EINVAL;
 146
 147         nvme = &sp->u.iocb_cmd;
 148         fd = nvme->u.nvme.desc;
 149         priv = fd->private;
 150         priv->comp_status = res;
 151         schedule_work(&priv->ls_work);
 152         /* work schedule doesn't need the sp */
 153         qla2x00_rel_sp(sp);
 154 }
 155
 156 static void qla_nvme_sp_done(void *ptr, int res)
 157 {
 158         srb_t *sp = ptr;
 159         struct srb_iocb *nvme;
 160         struct nvmefc_fcp_req *fd;
 161
 162         nvme = &sp->u.iocb_cmd;
 163         fd = nvme->u.nvme.desc;
 164
 165         if (!atomic_dec_and_test(&sp->ref_count))
 166                 return;
 167
 168         if (res == QLA_SUCCESS)
 169                 fd->status = 0;
 170         else
 171                 fd->status = NVME_SC_INTERNAL;
 172
 173         fd->rcv_rsplen = nvme->u.nvme.rsp_pyld_len;
 174         fd->done(fd);
 175         qla2xxx_rel_qpair_sp(sp->qpair, sp);
 176
 177         return;
 178 }
 179
 180 static void qla_nvme_abort_work(struct work_struct *work)
 181 {
 182         struct nvme_private *priv =
 183                 container_of(work, struct nvme_private, abort_work);
 184         srb_t *sp = priv->sp;
 185         fc_port_t *fcport = sp->fcport;
 186         struct qla_hw_data *ha = fcport->vha->hw;
 187         int rval;
 188
 189         rval = ha->isp_ops->abort_command(sp);
 190
 191         ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
 192             "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
 193             __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
 194             sp, sp->handle, fcport, rval);
 195 }
 196
 197 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
 198     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 199 {
 200         struct nvme_private *priv = fd->private;
 201
 202         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 203         schedule_work(&priv->abort_work);
 204 }
 205
 206 static void qla_nvme_ls_complete(struct work_struct *work)
 207 {
 208         struct nvme_private *priv =
 209             container_of(work, struct nvme_private, ls_work);
 210         struct nvmefc_ls_req *fd = priv->fd;
 211
 212         fd->done(fd, priv->comp_status);
 213 }
 214
 215 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
 216     struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 217 {
 218         struct qla_nvme_rport *qla_rport = rport->private;
 219         fc_port_t *fcport = qla_rport->fcport;
 220         struct srb_iocb   *nvme;
 221         struct nvme_private *priv = fd->private;
 222         struct scsi_qla_host *vha;
 223         int     rval = QLA_FUNCTION_FAILED;
 224         struct qla_hw_data *ha;
 225         srb_t           *sp;
 226
 227         vha = fcport->vha;
 228         ha = vha->hw;
 229         /* Alloc SRB structure */
 230         sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
 231         if (!sp)
 232                 return rval;
 233
 234         sp->type = SRB_NVME_LS;
 235         sp->name = "nvme_ls";
 236         sp->done = qla_nvme_sp_ls_done;
 237         atomic_set(&sp->ref_count, 1);
 238         nvme = &sp->u.iocb_cmd;
 239         priv->sp = sp;
 240         priv->fd = fd;
 241         INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
 242         nvme->u.nvme.desc = fd;
 243         nvme->u.nvme.dir = 0;
 244         nvme->u.nvme.dl = 0;
 245         nvme->u.nvme.cmd_len = fd->rqstlen;
 246         nvme->u.nvme.rsp_len = fd->rsplen;
 247         nvme->u.nvme.rsp_dma = fd->rspdma;
 248         nvme->u.nvme.timeout_sec = fd->timeout;
 249         nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
 250             fd->rqstlen, DMA_TO_DEVICE);
 251         dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
 252             fd->rqstlen, DMA_TO_DEVICE);
 253
 254         rval = qla2x00_start_sp(sp);
 255         if (rval != QLA_SUCCESS) {
 256                 ql_log(ql_log_warn, vha, 0x700e,
 257                     "qla2x00_start_sp failed = %d\n", rval);
 258                 atomic_dec(&sp->ref_count);
 259                 wake_up(&sp->nvme_ls_waitq);
 260                 return rval;
 261         }
 262
 263         return rval;
 264 }
 265
 266 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
 267     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 268     struct nvmefc_fcp_req *fd)
 269 {
 270         struct nvme_private *priv = fd->private;
 271
 272         INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 273         schedule_work(&priv->abort_work);
 274 }
 275
 276 static void qla_nvme_poll(struct nvme_fc_local_port *lport, void *hw_queue_handle)
 277 {
 278         struct qla_qpair *qpair = hw_queue_handle;
 279         unsigned long flags;
 280         struct scsi_qla_host *vha = lport->private;
 281
 282         spin_lock_irqsave(&qpair->qp_lock, flags);
 283         qla24xx_process_response_queue(vha, qpair->rsp);
 284         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 285 }
 286
 287 static inline int qla2x00_start_nvme_mq(srb_t *sp)
 288 {
 289         unsigned long   flags;
 290         uint32_t        *clr_ptr;
 291         uint32_t        index;
 292         uint32_t        handle;
 293         struct cmd_nvme *cmd_pkt;
 294         uint16_t        cnt, i;
 295         uint16_t        req_cnt;
 296         uint16_t        tot_dsds;
 297         uint16_t        avail_dsds;
 298         uint32_t        *cur_dsd;
 299         struct req_que *req = NULL;
 300         struct scsi_qla_host *vha = sp->fcport->vha;
 301         struct qla_hw_data *ha = vha->hw;
 302         struct qla_qpair *qpair = sp->qpair;
 303         struct srb_iocb *nvme = &sp->u.iocb_cmd;
 304         struct scatterlist *sgl, *sg;
 305         struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
 306         uint32_t        rval = QLA_SUCCESS;
 307
 308         /* Setup qpair pointers */
 309         req = qpair->req;
 310         tot_dsds = fd->sg_cnt;
 311
 312         /* Acquire qpair specific lock */
 313         spin_lock_irqsave(&qpair->qp_lock, flags);
 314
 315         /* Check for room in outstanding command list. */
 316         handle = req->current_outstanding_cmd;
 317         for (index = 1; index < req->num_outstanding_cmds; index++) {
 318                 handle++;
 319                 if (handle == req->num_outstanding_cmds)
 320                         handle = 1;
 321                 if (!req->outstanding_cmds[handle])
 322                         break;
 323         }
 324
 325         if (index == req->num_outstanding_cmds) {
 326                 rval = -EBUSY;
 327                 goto queuing_error;
 328         }
 329         req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
 330         if (req->cnt < (req_cnt + 2)) {
 331                 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
 332                     RD_REG_DWORD_RELAXED(req->req_q_out);
 333
 334                 if (req->ring_index < cnt)
 335                         req->cnt = cnt - req->ring_index;
 336                 else
 337                         req->cnt = req->length - (req->ring_index - cnt);
 338
 339                 if (req->cnt < (req_cnt + 2)){
 340                         rval = -EBUSY;
 341                         goto queuing_error;
 342                 }
 343         }
 344
 345         if (unlikely(!fd->sqid)) {
 346                 struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
 347                 if (cmd->sqe.common.opcode == nvme_admin_async_event) {
 348                         nvme->u.nvme.aen_op = 1;
 349                         atomic_inc(&ha->nvme_active_aen_cnt);
 350                 }
 351         }
 352
 353         /* Build command packet. */
 354         req->current_outstanding_cmd = handle;
 355         req->outstanding_cmds[handle] = sp;
 356         sp->handle = handle;
 357         req->cnt -= req_cnt;
 358
 359         cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
 360         cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
 361
 362         /* Zero out remaining portion of packet. */
 363         clr_ptr = (uint32_t *)cmd_pkt + 2;
 364         memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
 365
 366         cmd_pkt->entry_status = 0;
 367
 368         /* Update entry type to indicate Command NVME IOCB */
 369         cmd_pkt->entry_type = COMMAND_NVME;
 370
 371         /* No data transfer how do we check buffer len == 0?? */
 372         if (fd->io_dir == NVMEFC_FCP_READ) {
 373                 cmd_pkt->control_flags =
 374                     cpu_to_le16(CF_READ_DATA | CF_NVME_ENABLE);
 375                 vha->qla_stats.input_bytes += fd->payload_length;
 376                 vha->qla_stats.input_requests++;
 377         } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
 378                 cmd_pkt->control_flags =
 379                     cpu_to_le16(CF_WRITE_DATA | CF_NVME_ENABLE);
 380                 vha->qla_stats.output_bytes += fd->payload_length;
 381                 vha->qla_stats.output_requests++;
 382         } else if (fd->io_dir == 0) {
 383                 cmd_pkt->control_flags = cpu_to_le16(CF_NVME_ENABLE);
 384         }
 385
 386         /* Set NPORT-ID */
 387         cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
 388         cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
 389         cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
 390         cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
 391         cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
 392
 393         /* NVME RSP IU */
 394         cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
 395         cmd_pkt->nvme_rsp_dseg_address[0] = cpu_to_le32(LSD(fd->rspdma));
 396         cmd_pkt->nvme_rsp_dseg_address[1] = cpu_to_le32(MSD(fd->rspdma));
 397
 398         /* NVME CNMD IU */
 399         cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
 400         cmd_pkt->nvme_cmnd_dseg_address[0] = cpu_to_le32(LSD(fd->cmddma));
 401         cmd_pkt->nvme_cmnd_dseg_address[1] = cpu_to_le32(MSD(fd->cmddma));
 402
 403         cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
 404         cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
 405
 406         /* One DSD is available in the Command Type NVME IOCB */
 407         avail_dsds = 1;
 408         cur_dsd = (uint32_t *)&cmd_pkt->nvme_data_dseg_address[0];
 409         sgl = fd->first_sgl;
 410
 411         /* Load data segments */
 412         for_each_sg(sgl, sg, tot_dsds, i) {
 413                 dma_addr_t      sle_dma;
 414                 cont_a64_entry_t *cont_pkt;
 415
 416                 /* Allocate additional continuation packets? */
 417                 if (avail_dsds == 0) {
 418                         /*
 419                          * Five DSDs are available in the Continuation
 420                          * Type 1 IOCB.
 421                          */
 422
 423                         /* Adjust ring index */
 424                         req->ring_index++;
 425                         if (req->ring_index == req->length) {
 426                                 req->ring_index = 0;
 427                                 req->ring_ptr = req->ring;
 428                         } else {
 429                                 req->ring_ptr++;
 430                         }
 431                         cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
 432                         *((uint32_t *)(&cont_pkt->entry_type)) =
 433                             cpu_to_le32(CONTINUE_A64_TYPE);
 434
 435                         cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
 436                         avail_dsds = 5;
 437                 }
 438
 439                 sle_dma = sg_dma_address(sg);
 440                 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
 441                 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
 442                 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
 443                 avail_dsds--;
 444         }
 445
 446         /* Set total entry count. */
 447         cmd_pkt->entry_count = (uint8_t)req_cnt;
 448         wmb();
 449
 450         /* Adjust ring index. */
 451         req->ring_index++;
 452         if (req->ring_index == req->length) {
 453                 req->ring_index = 0;
 454                 req->ring_ptr = req->ring;
 455         } else {
 456                 req->ring_ptr++;
 457         }
 458
 459         /* Set chip new ring index. */
 460         WRT_REG_DWORD(req->req_q_in, req->ring_index);
 461
 462 queuing_error:
 463         spin_unlock_irqrestore(&qpair->qp_lock, flags);
 464         return rval;
 465 }
 466
 467 /* Post a command */
 468 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
 469     struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 470     struct nvmefc_fcp_req *fd)
 471 {
 472         fc_port_t *fcport;
 473         struct srb_iocb *nvme;
 474         struct scsi_qla_host *vha;
 475         int rval = -ENODEV;
 476         srb_t *sp;
 477         struct qla_qpair *qpair = hw_queue_handle;
 478         struct nvme_private *priv = fd->private;
 479         struct qla_nvme_rport *qla_rport = rport->private;
 480
 481         if (!priv) {
 482                 /* nvme association has been torn down */
 483                 return rval;
 484         }
 485
 486         fcport = qla_rport->fcport;
 487
 488         vha = fcport->vha;
 489
 490         if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 491                 return rval;
 492
 493         /*
 494          * If we know the dev is going away while the transport is still sending
 495          * IO's return busy back to stall the IO Q.  This happens when the
 496          * link goes away and fw hasn't notified us yet, but IO's are being
 497          * returned. If the dev comes back quickly we won't exhaust the IO
 498          * retry count at the core.
 499          */
 500         if (fcport->nvme_flag & NVME_FLAG_RESETTING)
 501                 return -EBUSY;
 502
 503         /* Alloc SRB structure */
 504         sp = qla2xxx_get_qpair_sp(qpair, fcport, GFP_ATOMIC);
 505         if (!sp)
 506                 return -EBUSY;
 507
 508         atomic_set(&sp->ref_count, 1);
 509         init_waitqueue_head(&sp->nvme_ls_waitq);
 510         priv->sp = sp;
 511         sp->type = SRB_NVME_CMD;
 512         sp->name = "nvme_cmd";
 513         sp->done = qla_nvme_sp_done;
 514         sp->qpair = qpair;
 515         sp->vha = vha;
 516         nvme = &sp->u.iocb_cmd;
 517         nvme->u.nvme.desc = fd;
 518
 519         rval = qla2x00_start_nvme_mq(sp);
 520         if (rval != QLA_SUCCESS) {
 521                 ql_log(ql_log_warn, vha, 0x212d,
 522                     "qla2x00_start_nvme_mq failed = %d\n", rval);
 523                 atomic_dec(&sp->ref_count);
 524                 wake_up(&sp->nvme_ls_waitq);
 525         }
 526
 527         return rval;
 528 }
 529
 530 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
 531 {
 532         struct scsi_qla_host *vha = lport->private;
 533
 534         ql_log(ql_log_info, vha, 0x210f,
 535             "localport delete of %p completed.\n", vha->nvme_local_port);
 536         vha->nvme_local_port = NULL;
 537         complete(&vha->nvme_del_done);
 538 }
 539
 540 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
 541 {
 542         fc_port_t *fcport;
 543         struct qla_nvme_rport *qla_rport = rport->private, *trport;
 544
 545         fcport = qla_rport->fcport;
 546         fcport->nvme_remote_port = NULL;
 547         fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
 548
 549         list_for_each_entry_safe(qla_rport, trport,
 550             &fcport->vha->nvme_rport_list, list) {
 551                 if (qla_rport->fcport == fcport) {
 552                         list_del(&qla_rport->list);
 553                         break;
 554                 }
 555         }
 556         complete(&fcport->nvme_del_done);
 557
 558         if (!test_bit(UNLOADING, &fcport->vha->dpc_flags)) {
 559                 INIT_WORK(&fcport->free_work, qlt_free_session_done);
 560                 schedule_work(&fcport->free_work);
 561         }
 562
 563         fcport->nvme_flag &= ~NVME_FLAG_DELETING;
 564         ql_log(ql_log_info, fcport->vha, 0x2110,
 565             "remoteport_delete of %p completed.\n", fcport);
 566 }
 567
 568 static struct nvme_fc_port_template qla_nvme_fc_transport = {
 569         .localport_delete = qla_nvme_localport_delete,
 570         .remoteport_delete = qla_nvme_remoteport_delete,
 571         .create_queue   = qla_nvme_alloc_queue,
 572         .delete_queue   = NULL,
 573         .ls_req         = qla_nvme_ls_req,
 574         .ls_abort       = qla_nvme_ls_abort,
 575         .fcp_io         = qla_nvme_post_cmd,
 576         .fcp_abort      = qla_nvme_fcp_abort,
 577         .poll_queue     = qla_nvme_poll,
 578         .max_hw_queues  = 8,
 579         .max_sgl_segments = 128,
 580         .max_dif_sgl_segments = 64,
 581         .dma_boundary = 0xFFFFFFFF,
 582         .local_priv_sz  = 8,
 583         .remote_priv_sz = sizeof(struct qla_nvme_rport),
 584         .lsrqst_priv_sz = sizeof(struct nvme_private),
 585         .fcprqst_priv_sz = sizeof(struct nvme_private),
 586 };
 587
 588 #define NVME_ABORT_POLLING_PERIOD    2
 589 static int qla_nvme_wait_on_command(srb_t *sp)
 590 {
 591         int ret = QLA_SUCCESS;
 592
 593         wait_event_timeout(sp->nvme_ls_waitq, (atomic_read(&sp->ref_count) > 1),
 594             NVME_ABORT_POLLING_PERIOD*HZ);
 595
 596         if (atomic_read(&sp->ref_count) > 1)
 597                 ret = QLA_FUNCTION_FAILED;
 598
 599         return ret;
 600 }
 601
 602 void qla_nvme_abort(struct qla_hw_data *ha, struct srb *sp, int res)
 603 {
 604         int rval;
 605
 606         if (ha->flags.fw_started) {
 607                 rval = ha->isp_ops->abort_command(sp);
 608                 if (!rval && !qla_nvme_wait_on_command(sp))
 609                         ql_log(ql_log_warn, NULL, 0x2112,
 610                             "timed out waiting on sp=%p\n", sp);
 611         } else {
 612                 sp->done(sp, res);
 613         }
 614 }
 615
 616 static void qla_nvme_unregister_remote_port(struct work_struct *work)
 617 {
 618         struct fc_port *fcport = container_of(work, struct fc_port,
 619             nvme_del_work);
 620         struct qla_nvme_rport *qla_rport, *trport;
 621
 622         if (!IS_ENABLED(CONFIG_NVME_FC))
 623                 return;
 624
 625         ql_log(ql_log_warn, NULL, 0x2112,
 626             "%s: unregister remoteport on %p\n",__func__, fcport);
 627
 628         list_for_each_entry_safe(qla_rport, trport,
 629             &fcport->vha->nvme_rport_list, list) {
 630                 if (qla_rport->fcport == fcport) {
 631                         ql_log(ql_log_info, fcport->vha, 0x2113,
 632                             "%s: fcport=%p\n", __func__, fcport);
 633                         init_completion(&fcport->nvme_del_done);
 634                         nvme_fc_unregister_remoteport(
 635                             fcport->nvme_remote_port);
 636                         wait_for_completion(&fcport->nvme_del_done);
 637                         break;
 638                 }
 639         }
 640 }
 641
 642 void qla_nvme_delete(struct scsi_qla_host *vha)
 643 {
 644         struct qla_nvme_rport *qla_rport, *trport;
 645         fc_port_t *fcport;
 646         int nv_ret;
 647
 648         if (!IS_ENABLED(CONFIG_NVME_FC))
 649                 return;
 650
 651         list_for_each_entry_safe(qla_rport, trport,
 652             &vha->nvme_rport_list, list) {
 653                 fcport = qla_rport->fcport;
 654
 655                 ql_log(ql_log_info, fcport->vha, 0x2114, "%s: fcport=%p\n",
 656                     __func__, fcport);
 657
 658                 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
 659         }
 660
 661         if (vha->nvme_local_port) {
 662                 init_completion(&vha->nvme_del_done);
 663                 ql_log(ql_log_info, vha, 0x2116,
 664                         "unregister localport=%p\n",
 665                         vha->nvme_local_port);
 666                 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
 667                 if (nv_ret)
 668                         ql_log(ql_log_info, vha, 0x2115,
 669                             "Unregister of localport failed\n");
 670                 else
 671                         wait_for_completion(&vha->nvme_del_done);
 672         }
 673 }
 674
 675 int qla_nvme_register_hba(struct scsi_qla_host *vha)
 676 {
 677         struct nvme_fc_port_template *tmpl;
 678         struct qla_hw_data *ha;
 679         struct nvme_fc_port_info pinfo;
 680         int ret = -EINVAL;
 681
 682         if (!IS_ENABLED(CONFIG_NVME_FC))
 683                 return ret;
 684
 685         ha = vha->hw;
 686         tmpl = &qla_nvme_fc_transport;
 687
 688         WARN_ON(vha->nvme_local_port);
 689         WARN_ON(ha->max_req_queues < 3);
 690
 691         qla_nvme_fc_transport.max_hw_queues =
 692             min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
 693                 (uint8_t)(ha->max_req_queues - 2));
 694
 695         pinfo.node_name = wwn_to_u64(vha->node_name);
 696         pinfo.port_name = wwn_to_u64(vha->port_name);
 697         pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
 698         pinfo.port_id = vha->d_id.b24;
 699
 700         ql_log(ql_log_info, vha, 0xffff,
 701             "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
 702             pinfo.node_name, pinfo.port_name, pinfo.port_id);
 703         qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
 704
 705         ret = nvme_fc_register_localport(&pinfo, tmpl,
 706             get_device(&ha->pdev->dev), &vha->nvme_local_port);
 707         if (ret) {
 708                 ql_log(ql_log_warn, vha, 0xffff,
 709                     "register_localport failed: ret=%x\n", ret);
 710         } else {
 711                 vha->nvme_local_port->private = vha;
 712         }
 713
 714         return ret;
 715 }