linux/drivers/scsi/qla2xxx/qla_nvme.c
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   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
  13static struct nvme_fc_port_template qla_nvme_fc_transport;
  14
  15int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
  16{
  17        struct qla_nvme_rport *rport;
  18        struct nvme_fc_port_info req;
  19        int ret;
  20
  21        if (!IS_ENABLED(CONFIG_NVME_FC))
  22                return 0;
  23
  24        if (!vha->flags.nvme_enabled) {
  25                ql_log(ql_log_info, vha, 0x2100,
  26                    "%s: Not registering target since Host NVME is not enabled\n",
  27                    __func__);
  28                return 0;
  29        }
  30
  31        if (!vha->nvme_local_port && qla_nvme_register_hba(vha))
  32                return 0;
  33
  34        if (!(fcport->nvme_prli_service_param &
  35            (NVME_PRLI_SP_TARGET | NVME_PRLI_SP_DISCOVERY)) ||
  36                (fcport->nvme_flag & NVME_FLAG_REGISTERED))
  37                return 0;
  38
  39        fcport->nvme_flag &= ~NVME_FLAG_RESETTING;
  40
  41        memset(&req, 0, sizeof(struct nvme_fc_port_info));
  42        req.port_name = wwn_to_u64(fcport->port_name);
  43        req.node_name = wwn_to_u64(fcport->node_name);
  44        req.port_role = 0;
  45        req.dev_loss_tmo = 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
  75        fcport->nvme_flag |= NVME_FLAG_REGISTERED;
  76        return 0;
  77}
  78
  79/* Allocate a queue for NVMe traffic */
  80static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport,
  81    unsigned int qidx, u16 qsize, void **handle)
  82{
  83        struct scsi_qla_host *vha;
  84        struct qla_hw_data *ha;
  85        struct qla_qpair *qpair;
  86
  87        if (!qidx)
  88                qidx++;
  89
  90        vha = (struct scsi_qla_host *)lport->private;
  91        ha = vha->hw;
  92
  93        ql_log(ql_log_info, vha, 0x2104,
  94            "%s: handle %p, idx =%d, qsize %d\n",
  95            __func__, handle, qidx, qsize);
  96
  97        if (qidx > qla_nvme_fc_transport.max_hw_queues) {
  98                ql_log(ql_log_warn, vha, 0x212f,
  99                    "%s: Illegal qidx=%d. Max=%d\n",
 100                    __func__, qidx, qla_nvme_fc_transport.max_hw_queues);
 101                return -EINVAL;
 102        }
 103
 104        if (ha->queue_pair_map[qidx]) {
 105                *handle = ha->queue_pair_map[qidx];
 106                ql_log(ql_log_info, vha, 0x2121,
 107                    "Returning existing qpair of %p for idx=%x\n",
 108                    *handle, qidx);
 109                return 0;
 110        }
 111
 112        qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
 113        if (qpair == NULL) {
 114                ql_log(ql_log_warn, vha, 0x2122,
 115                    "Failed to allocate qpair\n");
 116                return -EINVAL;
 117        }
 118        *handle = qpair;
 119
 120        return 0;
 121}
 122
 123static void qla_nvme_release_fcp_cmd_kref(struct kref *kref)
 124{
 125        struct srb *sp = container_of(kref, struct srb, cmd_kref);
 126        struct nvme_private *priv = (struct nvme_private *)sp->priv;
 127        struct nvmefc_fcp_req *fd;
 128        struct srb_iocb *nvme;
 129        unsigned long flags;
 130
 131        if (!priv)
 132                goto out;
 133
 134        nvme = &sp->u.iocb_cmd;
 135        fd = nvme->u.nvme.desc;
 136
 137        spin_lock_irqsave(&priv->cmd_lock, flags);
 138        priv->sp = NULL;
 139        sp->priv = NULL;
 140        if (priv->comp_status == QLA_SUCCESS) {
 141                fd->rcv_rsplen = nvme->u.nvme.rsp_pyld_len;
 142        } else {
 143                fd->rcv_rsplen = 0;
 144                fd->transferred_length = 0;
 145        }
 146        fd->status = 0;
 147        spin_unlock_irqrestore(&priv->cmd_lock, flags);
 148
 149        fd->done(fd);
 150out:
 151        qla2xxx_rel_qpair_sp(sp->qpair, sp);
 152}
 153
 154static void qla_nvme_release_ls_cmd_kref(struct kref *kref)
 155{
 156        struct srb *sp = container_of(kref, struct srb, cmd_kref);
 157        struct nvme_private *priv = (struct nvme_private *)sp->priv;
 158        struct nvmefc_ls_req *fd;
 159        unsigned long flags;
 160
 161        if (!priv)
 162                goto out;
 163
 164        spin_lock_irqsave(&priv->cmd_lock, flags);
 165        priv->sp = NULL;
 166        sp->priv = NULL;
 167        spin_unlock_irqrestore(&priv->cmd_lock, flags);
 168
 169        fd = priv->fd;
 170        fd->done(fd, priv->comp_status);
 171out:
 172        qla2x00_rel_sp(sp);
 173}
 174
 175static void qla_nvme_ls_complete(struct work_struct *work)
 176{
 177        struct nvme_private *priv =
 178                container_of(work, struct nvme_private, ls_work);
 179
 180        kref_put(&priv->sp->cmd_kref, qla_nvme_release_ls_cmd_kref);
 181}
 182
 183static void qla_nvme_sp_ls_done(srb_t *sp, int res)
 184{
 185        struct nvme_private *priv = sp->priv;
 186
 187        if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0))
 188                return;
 189
 190        if (res)
 191                res = -EINVAL;
 192
 193        priv->comp_status = res;
 194        INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
 195        schedule_work(&priv->ls_work);
 196}
 197
 198/* it assumed that QPair lock is held. */
 199static void qla_nvme_sp_done(srb_t *sp, int res)
 200{
 201        struct nvme_private *priv = sp->priv;
 202
 203        priv->comp_status = res;
 204        kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref);
 205
 206        return;
 207}
 208
 209static void qla_nvme_abort_work(struct work_struct *work)
 210{
 211        struct nvme_private *priv =
 212                container_of(work, struct nvme_private, abort_work);
 213        srb_t *sp = priv->sp;
 214        fc_port_t *fcport = sp->fcport;
 215        struct qla_hw_data *ha = fcport->vha->hw;
 216        int rval;
 217
 218        ql_dbg(ql_dbg_io, fcport->vha, 0xffff,
 219               "%s called for sp=%p, hndl=%x on fcport=%p deleted=%d\n",
 220               __func__, sp, sp->handle, fcport, fcport->deleted);
 221
 222        if (!ha->flags.fw_started && fcport->deleted)
 223                goto out;
 224
 225        if (ha->flags.host_shutting_down) {
 226                ql_log(ql_log_info, sp->fcport->vha, 0xffff,
 227                    "%s Calling done on sp: %p, type: 0x%x, sp->ref_count: 0x%x\n",
 228                    __func__, sp, sp->type, atomic_read(&sp->ref_count));
 229                sp->done(sp, 0);
 230                goto out;
 231        }
 232
 233        rval = ha->isp_ops->abort_command(sp);
 234
 235        ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
 236            "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
 237            __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
 238            sp, sp->handle, fcport, rval);
 239
 240out:
 241        /* kref_get was done before work was schedule. */
 242        kref_put(&sp->cmd_kref, sp->put_fn);
 243}
 244
 245static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
 246    struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 247{
 248        struct nvme_private *priv = fd->private;
 249        unsigned long flags;
 250
 251        spin_lock_irqsave(&priv->cmd_lock, flags);
 252        if (!priv->sp) {
 253                spin_unlock_irqrestore(&priv->cmd_lock, flags);
 254                return;
 255        }
 256
 257        if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 258                spin_unlock_irqrestore(&priv->cmd_lock, flags);
 259                return;
 260        }
 261        spin_unlock_irqrestore(&priv->cmd_lock, flags);
 262
 263        INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 264        schedule_work(&priv->abort_work);
 265}
 266
 267static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
 268    struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 269{
 270        struct qla_nvme_rport *qla_rport = rport->private;
 271        fc_port_t *fcport = qla_rport->fcport;
 272        struct srb_iocb   *nvme;
 273        struct nvme_private *priv = fd->private;
 274        struct scsi_qla_host *vha;
 275        int     rval = QLA_FUNCTION_FAILED;
 276        struct qla_hw_data *ha;
 277        srb_t           *sp;
 278
 279
 280        if (!fcport || (fcport && fcport->deleted))
 281                return rval;
 282
 283        vha = fcport->vha;
 284        ha = vha->hw;
 285
 286        if (!ha->flags.fw_started)
 287                return rval;
 288
 289        /* Alloc SRB structure */
 290        sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
 291        if (!sp)
 292                return rval;
 293
 294        sp->type = SRB_NVME_LS;
 295        sp->name = "nvme_ls";
 296        sp->done = qla_nvme_sp_ls_done;
 297        sp->put_fn = qla_nvme_release_ls_cmd_kref;
 298        sp->priv = (void *)priv;
 299        priv->sp = sp;
 300        kref_init(&sp->cmd_kref);
 301        spin_lock_init(&priv->cmd_lock);
 302        nvme = &sp->u.iocb_cmd;
 303        priv->fd = fd;
 304        nvme->u.nvme.desc = fd;
 305        nvme->u.nvme.dir = 0;
 306        nvme->u.nvme.dl = 0;
 307        nvme->u.nvme.cmd_len = fd->rqstlen;
 308        nvme->u.nvme.rsp_len = fd->rsplen;
 309        nvme->u.nvme.rsp_dma = fd->rspdma;
 310        nvme->u.nvme.timeout_sec = fd->timeout;
 311        nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
 312            fd->rqstlen, DMA_TO_DEVICE);
 313        dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
 314            fd->rqstlen, DMA_TO_DEVICE);
 315
 316        rval = qla2x00_start_sp(sp);
 317        if (rval != QLA_SUCCESS) {
 318                ql_log(ql_log_warn, vha, 0x700e,
 319                    "qla2x00_start_sp failed = %d\n", rval);
 320                wake_up(&sp->nvme_ls_waitq);
 321                sp->priv = NULL;
 322                priv->sp = NULL;
 323                qla2x00_rel_sp(sp);
 324                return rval;
 325        }
 326
 327        return rval;
 328}
 329
 330static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
 331    struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 332    struct nvmefc_fcp_req *fd)
 333{
 334        struct nvme_private *priv = fd->private;
 335        unsigned long flags;
 336
 337        spin_lock_irqsave(&priv->cmd_lock, flags);
 338        if (!priv->sp) {
 339                spin_unlock_irqrestore(&priv->cmd_lock, flags);
 340                return;
 341        }
 342        if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 343                spin_unlock_irqrestore(&priv->cmd_lock, flags);
 344                return;
 345        }
 346        spin_unlock_irqrestore(&priv->cmd_lock, flags);
 347
 348        INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 349        schedule_work(&priv->abort_work);
 350}
 351
 352static inline int qla2x00_start_nvme_mq(srb_t *sp)
 353{
 354        unsigned long   flags;
 355        uint32_t        *clr_ptr;
 356        uint32_t        handle;
 357        struct cmd_nvme *cmd_pkt;
 358        uint16_t        cnt, i;
 359        uint16_t        req_cnt;
 360        uint16_t        tot_dsds;
 361        uint16_t        avail_dsds;
 362        struct dsd64    *cur_dsd;
 363        struct req_que *req = NULL;
 364        struct scsi_qla_host *vha = sp->fcport->vha;
 365        struct qla_hw_data *ha = vha->hw;
 366        struct qla_qpair *qpair = sp->qpair;
 367        struct srb_iocb *nvme = &sp->u.iocb_cmd;
 368        struct scatterlist *sgl, *sg;
 369        struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
 370        uint32_t        rval = QLA_SUCCESS;
 371
 372        /* Setup qpair pointers */
 373        req = qpair->req;
 374        tot_dsds = fd->sg_cnt;
 375
 376        /* Acquire qpair specific lock */
 377        spin_lock_irqsave(&qpair->qp_lock, flags);
 378
 379        handle = qla2xxx_get_next_handle(req);
 380        if (handle == 0) {
 381                rval = -EBUSY;
 382                goto queuing_error;
 383        }
 384        req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
 385        if (req->cnt < (req_cnt + 2)) {
 386                cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
 387                    RD_REG_DWORD_RELAXED(req->req_q_out);
 388
 389                if (req->ring_index < cnt)
 390                        req->cnt = cnt - req->ring_index;
 391                else
 392                        req->cnt = req->length - (req->ring_index - cnt);
 393
 394                if (req->cnt < (req_cnt + 2)){
 395                        rval = -EBUSY;
 396                        goto queuing_error;
 397                }
 398        }
 399
 400        if (unlikely(!fd->sqid)) {
 401                struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
 402
 403                if (cmd->sqe.common.opcode == nvme_admin_async_event) {
 404                        nvme->u.nvme.aen_op = 1;
 405                        atomic_inc(&ha->nvme_active_aen_cnt);
 406                }
 407        }
 408
 409        /* Build command packet. */
 410        req->current_outstanding_cmd = handle;
 411        req->outstanding_cmds[handle] = sp;
 412        sp->handle = handle;
 413        req->cnt -= req_cnt;
 414
 415        cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
 416        cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
 417
 418        /* Zero out remaining portion of packet. */
 419        clr_ptr = (uint32_t *)cmd_pkt + 2;
 420        memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
 421
 422        cmd_pkt->entry_status = 0;
 423
 424        /* Update entry type to indicate Command NVME IOCB */
 425        cmd_pkt->entry_type = COMMAND_NVME;
 426
 427        /* No data transfer how do we check buffer len == 0?? */
 428        if (fd->io_dir == NVMEFC_FCP_READ) {
 429                cmd_pkt->control_flags = CF_READ_DATA;
 430                vha->qla_stats.input_bytes += fd->payload_length;
 431                vha->qla_stats.input_requests++;
 432        } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
 433                cmd_pkt->control_flags = CF_WRITE_DATA;
 434                if ((vha->flags.nvme_first_burst) &&
 435                    (sp->fcport->nvme_prli_service_param &
 436                        NVME_PRLI_SP_FIRST_BURST)) {
 437                        if ((fd->payload_length <=
 438                            sp->fcport->nvme_first_burst_size) ||
 439                                (sp->fcport->nvme_first_burst_size == 0))
 440                                cmd_pkt->control_flags |=
 441                                    CF_NVME_FIRST_BURST_ENABLE;
 442                }
 443                vha->qla_stats.output_bytes += fd->payload_length;
 444                vha->qla_stats.output_requests++;
 445        } else if (fd->io_dir == 0) {
 446                cmd_pkt->control_flags = 0;
 447        }
 448
 449        /* Set NPORT-ID */
 450        cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
 451        cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
 452        cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
 453        cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
 454        cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
 455
 456        /* NVME RSP IU */
 457        cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
 458        put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address);
 459
 460        /* NVME CNMD IU */
 461        cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
 462        cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(fd->cmddma);
 463
 464        cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
 465        cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
 466
 467        /* One DSD is available in the Command Type NVME IOCB */
 468        avail_dsds = 1;
 469        cur_dsd = &cmd_pkt->nvme_dsd;
 470        sgl = fd->first_sgl;
 471
 472        /* Load data segments */
 473        for_each_sg(sgl, sg, tot_dsds, i) {
 474                cont_a64_entry_t *cont_pkt;
 475
 476                /* Allocate additional continuation packets? */
 477                if (avail_dsds == 0) {
 478                        /*
 479                         * Five DSDs are available in the Continuation
 480                         * Type 1 IOCB.
 481                         */
 482
 483                        /* Adjust ring index */
 484                        req->ring_index++;
 485                        if (req->ring_index == req->length) {
 486                                req->ring_index = 0;
 487                                req->ring_ptr = req->ring;
 488                        } else {
 489                                req->ring_ptr++;
 490                        }
 491                        cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
 492                        put_unaligned_le32(CONTINUE_A64_TYPE,
 493                                           &cont_pkt->entry_type);
 494
 495                        cur_dsd = cont_pkt->dsd;
 496                        avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
 497                }
 498
 499                append_dsd64(&cur_dsd, sg);
 500                avail_dsds--;
 501        }
 502
 503        /* Set total entry count. */
 504        cmd_pkt->entry_count = (uint8_t)req_cnt;
 505        wmb();
 506
 507        /* Adjust ring index. */
 508        req->ring_index++;
 509        if (req->ring_index == req->length) {
 510                req->ring_index = 0;
 511                req->ring_ptr = req->ring;
 512        } else {
 513                req->ring_ptr++;
 514        }
 515
 516        /* Set chip new ring index. */
 517        WRT_REG_DWORD(req->req_q_in, req->ring_index);
 518
 519queuing_error:
 520        spin_unlock_irqrestore(&qpair->qp_lock, flags);
 521        return rval;
 522}
 523
 524/* Post a command */
 525static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
 526    struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 527    struct nvmefc_fcp_req *fd)
 528{
 529        fc_port_t *fcport;
 530        struct srb_iocb *nvme;
 531        struct scsi_qla_host *vha;
 532        int rval = -ENODEV;
 533        srb_t *sp;
 534        struct qla_qpair *qpair = hw_queue_handle;
 535        struct nvme_private *priv = fd->private;
 536        struct qla_nvme_rport *qla_rport = rport->private;
 537
 538        fcport = qla_rport->fcport;
 539
 540        if (!qpair || !fcport || (qpair && !qpair->fw_started) ||
 541            (fcport && fcport->deleted))
 542                return rval;
 543
 544        vha = fcport->vha;
 545        /*
 546         * If we know the dev is going away while the transport is still sending
 547         * IO's return busy back to stall the IO Q.  This happens when the
 548         * link goes away and fw hasn't notified us yet, but IO's are being
 549         * returned. If the dev comes back quickly we won't exhaust the IO
 550         * retry count at the core.
 551         */
 552        if (fcport->nvme_flag & NVME_FLAG_RESETTING)
 553                return -EBUSY;
 554
 555        /* Alloc SRB structure */
 556        sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
 557        if (!sp)
 558                return -EBUSY;
 559
 560        init_waitqueue_head(&sp->nvme_ls_waitq);
 561        kref_init(&sp->cmd_kref);
 562        spin_lock_init(&priv->cmd_lock);
 563        sp->priv = (void *)priv;
 564        priv->sp = sp;
 565        sp->type = SRB_NVME_CMD;
 566        sp->name = "nvme_cmd";
 567        sp->done = qla_nvme_sp_done;
 568        sp->put_fn = qla_nvme_release_fcp_cmd_kref;
 569        sp->qpair = qpair;
 570        sp->vha = vha;
 571        nvme = &sp->u.iocb_cmd;
 572        nvme->u.nvme.desc = fd;
 573
 574        rval = qla2x00_start_nvme_mq(sp);
 575        if (rval != QLA_SUCCESS) {
 576                ql_log(ql_log_warn, vha, 0x212d,
 577                    "qla2x00_start_nvme_mq failed = %d\n", rval);
 578                wake_up(&sp->nvme_ls_waitq);
 579                sp->priv = NULL;
 580                priv->sp = NULL;
 581                qla2xxx_rel_qpair_sp(sp->qpair, sp);
 582        }
 583
 584        return rval;
 585}
 586
 587static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
 588{
 589        struct scsi_qla_host *vha = lport->private;
 590
 591        ql_log(ql_log_info, vha, 0x210f,
 592            "localport delete of %p completed.\n", vha->nvme_local_port);
 593        vha->nvme_local_port = NULL;
 594        complete(&vha->nvme_del_done);
 595}
 596
 597static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
 598{
 599        fc_port_t *fcport;
 600        struct qla_nvme_rport *qla_rport = rport->private;
 601
 602        fcport = qla_rport->fcport;
 603        fcport->nvme_remote_port = NULL;
 604        fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
 605        fcport->nvme_flag &= ~NVME_FLAG_DELETING;
 606        ql_log(ql_log_info, fcport->vha, 0x2110,
 607            "remoteport_delete of %p %8phN completed.\n",
 608            fcport, fcport->port_name);
 609        complete(&fcport->nvme_del_done);
 610}
 611
 612static struct nvme_fc_port_template qla_nvme_fc_transport = {
 613        .localport_delete = qla_nvme_localport_delete,
 614        .remoteport_delete = qla_nvme_remoteport_delete,
 615        .create_queue   = qla_nvme_alloc_queue,
 616        .delete_queue   = NULL,
 617        .ls_req         = qla_nvme_ls_req,
 618        .ls_abort       = qla_nvme_ls_abort,
 619        .fcp_io         = qla_nvme_post_cmd,
 620        .fcp_abort      = qla_nvme_fcp_abort,
 621        .max_hw_queues  = 8,
 622        .max_sgl_segments = 1024,
 623        .max_dif_sgl_segments = 64,
 624        .dma_boundary = 0xFFFFFFFF,
 625        .local_priv_sz  = 8,
 626        .remote_priv_sz = sizeof(struct qla_nvme_rport),
 627        .lsrqst_priv_sz = sizeof(struct nvme_private),
 628        .fcprqst_priv_sz = sizeof(struct nvme_private),
 629};
 630
 631void qla_nvme_unregister_remote_port(struct fc_port *fcport)
 632{
 633        int ret;
 634
 635        if (!IS_ENABLED(CONFIG_NVME_FC))
 636                return;
 637
 638        ql_log(ql_log_warn, NULL, 0x2112,
 639            "%s: unregister remoteport on %p %8phN\n",
 640            __func__, fcport, fcport->port_name);
 641
 642        if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags))
 643                nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
 644
 645        init_completion(&fcport->nvme_del_done);
 646        ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
 647        if (ret)
 648                ql_log(ql_log_info, fcport->vha, 0x2114,
 649                        "%s: Failed to unregister nvme_remote_port (%d)\n",
 650                            __func__, ret);
 651        wait_for_completion(&fcport->nvme_del_done);
 652}
 653
 654void qla_nvme_delete(struct scsi_qla_host *vha)
 655{
 656        int nv_ret;
 657
 658        if (!IS_ENABLED(CONFIG_NVME_FC))
 659                return;
 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
 675int 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}
 716