linux/drivers/scsi/qla2xxx/qla_nvme.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * QLogic Fibre Channel HBA Driver
   4 * Copyright (c)  2003-2017 QLogic Corporation
   5 */
   6#include "qla_nvme.h"
   7#include <linux/scatterlist.h>
   8#include <linux/delay.h>
   9#include <linux/nvme.h>
  10#include <linux/nvme-fc.h>
  11
  12static struct nvme_fc_port_template qla_nvme_fc_transport;
  13
  14int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
  15{
  16        struct qla_nvme_rport *rport;
  17        struct nvme_fc_port_info req;
  18        int ret;
  19
  20        if (!IS_ENABLED(CONFIG_NVME_FC))
  21                return 0;
  22
  23        if (!vha->flags.nvme_enabled) {
  24                ql_log(ql_log_info, vha, 0x2100,
  25                    "%s: Not registering target since Host NVME is not enabled\n",
  26                    __func__);
  27                return 0;
  28        }
  29
  30        if (!vha->nvme_local_port && qla_nvme_register_hba(vha))
  31                return 0;
  32
  33        if (!(fcport->nvme_prli_service_param &
  34            (NVME_PRLI_SP_TARGET | NVME_PRLI_SP_DISCOVERY)) ||
  35                (fcport->nvme_flag & NVME_FLAG_REGISTERED))
  36                return 0;
  37
  38        fcport->nvme_flag &= ~NVME_FLAG_RESETTING;
  39
  40        memset(&req, 0, sizeof(struct nvme_fc_port_info));
  41        req.port_name = wwn_to_u64(fcport->port_name);
  42        req.node_name = wwn_to_u64(fcport->node_name);
  43        req.port_role = 0;
  44        req.dev_loss_tmo = 0;
  45
  46        if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR)
  47                req.port_role = FC_PORT_ROLE_NVME_INITIATOR;
  48
  49        if (fcport->nvme_prli_service_param & NVME_PRLI_SP_TARGET)
  50                req.port_role |= FC_PORT_ROLE_NVME_TARGET;
  51
  52        if (fcport->nvme_prli_service_param & NVME_PRLI_SP_DISCOVERY)
  53                req.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
  54
  55        req.port_id = fcport->d_id.b24;
  56
  57        ql_log(ql_log_info, vha, 0x2102,
  58            "%s: traddr=nn-0x%016llx:pn-0x%016llx PortID:%06x\n",
  59            __func__, req.node_name, req.port_name,
  60            req.port_id);
  61
  62        ret = nvme_fc_register_remoteport(vha->nvme_local_port, &req,
  63            &fcport->nvme_remote_port);
  64        if (ret) {
  65                ql_log(ql_log_warn, vha, 0x212e,
  66                    "Failed to register remote port. Transport returned %d\n",
  67                    ret);
  68                return ret;
  69        }
  70
  71        if (fcport->nvme_prli_service_param & NVME_PRLI_SP_SLER)
  72                ql_log(ql_log_info, vha, 0x212a,
  73                       "PortID:%06x Supports SLER\n", req.port_id);
  74
  75        if (fcport->nvme_prli_service_param & NVME_PRLI_SP_PI_CTRL)
  76                ql_log(ql_log_info, vha, 0x212b,
  77                       "PortID:%06x Supports PI control\n", req.port_id);
  78
  79        rport = fcport->nvme_remote_port->private;
  80        rport->fcport = fcport;
  81
  82        fcport->nvme_flag |= NVME_FLAG_REGISTERED;
  83        return 0;
  84}
  85
  86/* Allocate a queue for NVMe traffic */
  87static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport,
  88    unsigned int qidx, u16 qsize, void **handle)
  89{
  90        struct scsi_qla_host *vha;
  91        struct qla_hw_data *ha;
  92        struct qla_qpair *qpair;
  93
  94        if (!qidx)
  95                qidx++;
  96
  97        vha = (struct scsi_qla_host *)lport->private;
  98        ha = vha->hw;
  99
 100        ql_log(ql_log_info, vha, 0x2104,
 101            "%s: handle %p, idx =%d, qsize %d\n",
 102            __func__, handle, qidx, qsize);
 103
 104        if (qidx > qla_nvme_fc_transport.max_hw_queues) {
 105                ql_log(ql_log_warn, vha, 0x212f,
 106                    "%s: Illegal qidx=%d. Max=%d\n",
 107                    __func__, qidx, qla_nvme_fc_transport.max_hw_queues);
 108                return -EINVAL;
 109        }
 110
 111        if (ha->queue_pair_map[qidx]) {
 112                *handle = ha->queue_pair_map[qidx];
 113                ql_log(ql_log_info, vha, 0x2121,
 114                    "Returning existing qpair of %p for idx=%x\n",
 115                    *handle, qidx);
 116                return 0;
 117        }
 118
 119        qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true);
 120        if (qpair == NULL) {
 121                ql_log(ql_log_warn, vha, 0x2122,
 122                    "Failed to allocate qpair\n");
 123                return -EINVAL;
 124        }
 125        *handle = qpair;
 126
 127        return 0;
 128}
 129
 130static void qla_nvme_release_fcp_cmd_kref(struct kref *kref)
 131{
 132        struct srb *sp = container_of(kref, struct srb, cmd_kref);
 133        struct nvme_private *priv = (struct nvme_private *)sp->priv;
 134        struct nvmefc_fcp_req *fd;
 135        struct srb_iocb *nvme;
 136        unsigned long flags;
 137
 138        if (!priv)
 139                goto out;
 140
 141        nvme = &sp->u.iocb_cmd;
 142        fd = nvme->u.nvme.desc;
 143
 144        spin_lock_irqsave(&priv->cmd_lock, flags);
 145        priv->sp = NULL;
 146        sp->priv = NULL;
 147        if (priv->comp_status == QLA_SUCCESS) {
 148                fd->rcv_rsplen = le16_to_cpu(nvme->u.nvme.rsp_pyld_len);
 149                fd->status = NVME_SC_SUCCESS;
 150        } else {
 151                fd->rcv_rsplen = 0;
 152                fd->transferred_length = 0;
 153                fd->status = NVME_SC_INTERNAL;
 154        }
 155        spin_unlock_irqrestore(&priv->cmd_lock, flags);
 156
 157        fd->done(fd);
 158out:
 159        qla2xxx_rel_qpair_sp(sp->qpair, sp);
 160}
 161
 162static void qla_nvme_release_ls_cmd_kref(struct kref *kref)
 163{
 164        struct srb *sp = container_of(kref, struct srb, cmd_kref);
 165        struct nvme_private *priv = (struct nvme_private *)sp->priv;
 166        struct nvmefc_ls_req *fd;
 167        unsigned long flags;
 168
 169        if (!priv)
 170                goto out;
 171
 172        spin_lock_irqsave(&priv->cmd_lock, flags);
 173        priv->sp = NULL;
 174        sp->priv = NULL;
 175        spin_unlock_irqrestore(&priv->cmd_lock, flags);
 176
 177        fd = priv->fd;
 178        fd->done(fd, priv->comp_status);
 179out:
 180        qla2x00_rel_sp(sp);
 181}
 182
 183static void qla_nvme_ls_complete(struct work_struct *work)
 184{
 185        struct nvme_private *priv =
 186                container_of(work, struct nvme_private, ls_work);
 187
 188        kref_put(&priv->sp->cmd_kref, qla_nvme_release_ls_cmd_kref);
 189}
 190
 191static void qla_nvme_sp_ls_done(srb_t *sp, int res)
 192{
 193        struct nvme_private *priv = sp->priv;
 194
 195        if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0))
 196                return;
 197
 198        if (res)
 199                res = -EINVAL;
 200
 201        priv->comp_status = res;
 202        INIT_WORK(&priv->ls_work, qla_nvme_ls_complete);
 203        schedule_work(&priv->ls_work);
 204}
 205
 206/* it assumed that QPair lock is held. */
 207static void qla_nvme_sp_done(srb_t *sp, int res)
 208{
 209        struct nvme_private *priv = sp->priv;
 210
 211        priv->comp_status = res;
 212        kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref);
 213
 214        return;
 215}
 216
 217static void qla_nvme_abort_work(struct work_struct *work)
 218{
 219        struct nvme_private *priv =
 220                container_of(work, struct nvme_private, abort_work);
 221        srb_t *sp = priv->sp;
 222        fc_port_t *fcport = sp->fcport;
 223        struct qla_hw_data *ha = fcport->vha->hw;
 224        int rval;
 225
 226        ql_dbg(ql_dbg_io, fcport->vha, 0xffff,
 227               "%s called for sp=%p, hndl=%x on fcport=%p deleted=%d\n",
 228               __func__, sp, sp->handle, fcport, fcport->deleted);
 229
 230        if (!ha->flags.fw_started || fcport->deleted)
 231                goto out;
 232
 233        if (ha->flags.host_shutting_down) {
 234                ql_log(ql_log_info, sp->fcport->vha, 0xffff,
 235                    "%s Calling done on sp: %p, type: 0x%x\n",
 236                    __func__, sp, sp->type);
 237                sp->done(sp, 0);
 238                goto out;
 239        }
 240
 241        rval = ha->isp_ops->abort_command(sp);
 242
 243        ql_dbg(ql_dbg_io, fcport->vha, 0x212b,
 244            "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n",
 245            __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted",
 246            sp, sp->handle, fcport, rval);
 247
 248        /*
 249         * Returned before decreasing kref so that I/O requests
 250         * are waited until ABTS complete. This kref is decreased
 251         * at qla24xx_abort_sp_done function.
 252         */
 253        if (ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(sp))
 254                return;
 255out:
 256        /* kref_get was done before work was schedule. */
 257        kref_put(&sp->cmd_kref, sp->put_fn);
 258}
 259
 260static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport,
 261    struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 262{
 263        struct nvme_private *priv = fd->private;
 264        unsigned long flags;
 265
 266        spin_lock_irqsave(&priv->cmd_lock, flags);
 267        if (!priv->sp) {
 268                spin_unlock_irqrestore(&priv->cmd_lock, flags);
 269                return;
 270        }
 271
 272        if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 273                spin_unlock_irqrestore(&priv->cmd_lock, flags);
 274                return;
 275        }
 276        spin_unlock_irqrestore(&priv->cmd_lock, flags);
 277
 278        INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 279        schedule_work(&priv->abort_work);
 280}
 281
 282static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
 283    struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd)
 284{
 285        struct qla_nvme_rport *qla_rport = rport->private;
 286        fc_port_t *fcport = qla_rport->fcport;
 287        struct srb_iocb   *nvme;
 288        struct nvme_private *priv = fd->private;
 289        struct scsi_qla_host *vha;
 290        int     rval = QLA_FUNCTION_FAILED;
 291        struct qla_hw_data *ha;
 292        srb_t           *sp;
 293
 294        if (!fcport || fcport->deleted)
 295                return rval;
 296
 297        vha = fcport->vha;
 298        ha = vha->hw;
 299
 300        if (!ha->flags.fw_started)
 301                return rval;
 302
 303        /* Alloc SRB structure */
 304        sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
 305        if (!sp)
 306                return rval;
 307
 308        sp->type = SRB_NVME_LS;
 309        sp->name = "nvme_ls";
 310        sp->done = qla_nvme_sp_ls_done;
 311        sp->put_fn = qla_nvme_release_ls_cmd_kref;
 312        sp->priv = priv;
 313        priv->sp = sp;
 314        kref_init(&sp->cmd_kref);
 315        spin_lock_init(&priv->cmd_lock);
 316        nvme = &sp->u.iocb_cmd;
 317        priv->fd = fd;
 318        nvme->u.nvme.desc = fd;
 319        nvme->u.nvme.dir = 0;
 320        nvme->u.nvme.dl = 0;
 321        nvme->u.nvme.cmd_len = fd->rqstlen;
 322        nvme->u.nvme.rsp_len = fd->rsplen;
 323        nvme->u.nvme.rsp_dma = fd->rspdma;
 324        nvme->u.nvme.timeout_sec = fd->timeout;
 325        nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr,
 326            fd->rqstlen, DMA_TO_DEVICE);
 327        dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma,
 328            fd->rqstlen, DMA_TO_DEVICE);
 329
 330        rval = qla2x00_start_sp(sp);
 331        if (rval != QLA_SUCCESS) {
 332                ql_log(ql_log_warn, vha, 0x700e,
 333                    "qla2x00_start_sp failed = %d\n", rval);
 334                wake_up(&sp->nvme_ls_waitq);
 335                sp->priv = NULL;
 336                priv->sp = NULL;
 337                qla2x00_rel_sp(sp);
 338                return rval;
 339        }
 340
 341        return rval;
 342}
 343
 344static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport,
 345    struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 346    struct nvmefc_fcp_req *fd)
 347{
 348        struct nvme_private *priv = fd->private;
 349        unsigned long flags;
 350
 351        spin_lock_irqsave(&priv->cmd_lock, flags);
 352        if (!priv->sp) {
 353                spin_unlock_irqrestore(&priv->cmd_lock, flags);
 354                return;
 355        }
 356        if (!kref_get_unless_zero(&priv->sp->cmd_kref)) {
 357                spin_unlock_irqrestore(&priv->cmd_lock, flags);
 358                return;
 359        }
 360        spin_unlock_irqrestore(&priv->cmd_lock, flags);
 361
 362        INIT_WORK(&priv->abort_work, qla_nvme_abort_work);
 363        schedule_work(&priv->abort_work);
 364}
 365
 366static inline int qla2x00_start_nvme_mq(srb_t *sp)
 367{
 368        unsigned long   flags;
 369        uint32_t        *clr_ptr;
 370        uint32_t        handle;
 371        struct cmd_nvme *cmd_pkt;
 372        uint16_t        cnt, i;
 373        uint16_t        req_cnt;
 374        uint16_t        tot_dsds;
 375        uint16_t        avail_dsds;
 376        struct dsd64    *cur_dsd;
 377        struct req_que *req = NULL;
 378        struct scsi_qla_host *vha = sp->fcport->vha;
 379        struct qla_hw_data *ha = vha->hw;
 380        struct qla_qpair *qpair = sp->qpair;
 381        struct srb_iocb *nvme = &sp->u.iocb_cmd;
 382        struct scatterlist *sgl, *sg;
 383        struct nvmefc_fcp_req *fd = nvme->u.nvme.desc;
 384        struct nvme_fc_cmd_iu *cmd = fd->cmdaddr;
 385        uint32_t        rval = QLA_SUCCESS;
 386
 387        /* Setup qpair pointers */
 388        req = qpair->req;
 389        tot_dsds = fd->sg_cnt;
 390
 391        /* Acquire qpair specific lock */
 392        spin_lock_irqsave(&qpair->qp_lock, flags);
 393
 394        handle = qla2xxx_get_next_handle(req);
 395        if (handle == 0) {
 396                rval = -EBUSY;
 397                goto queuing_error;
 398        }
 399        req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
 400        if (req->cnt < (req_cnt + 2)) {
 401                if (IS_SHADOW_REG_CAPABLE(ha)) {
 402                        cnt = *req->out_ptr;
 403                } else {
 404                        cnt = rd_reg_dword_relaxed(req->req_q_out);
 405                        if (qla2x00_check_reg16_for_disconnect(vha, cnt))
 406                                goto queuing_error;
 407                }
 408
 409                if (req->ring_index < cnt)
 410                        req->cnt = cnt - req->ring_index;
 411                else
 412                        req->cnt = req->length - (req->ring_index - cnt);
 413
 414                if (req->cnt < (req_cnt + 2)){
 415                        rval = -EBUSY;
 416                        goto queuing_error;
 417                }
 418        }
 419
 420        if (unlikely(!fd->sqid)) {
 421                if (cmd->sqe.common.opcode == nvme_admin_async_event) {
 422                        nvme->u.nvme.aen_op = 1;
 423                        atomic_inc(&ha->nvme_active_aen_cnt);
 424                }
 425        }
 426
 427        /* Build command packet. */
 428        req->current_outstanding_cmd = handle;
 429        req->outstanding_cmds[handle] = sp;
 430        sp->handle = handle;
 431        req->cnt -= req_cnt;
 432
 433        cmd_pkt = (struct cmd_nvme *)req->ring_ptr;
 434        cmd_pkt->handle = make_handle(req->id, handle);
 435
 436        /* Zero out remaining portion of packet. */
 437        clr_ptr = (uint32_t *)cmd_pkt + 2;
 438        memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
 439
 440        cmd_pkt->entry_status = 0;
 441
 442        /* Update entry type to indicate Command NVME IOCB */
 443        cmd_pkt->entry_type = COMMAND_NVME;
 444
 445        /* No data transfer how do we check buffer len == 0?? */
 446        if (fd->io_dir == NVMEFC_FCP_READ) {
 447                cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
 448                qpair->counters.input_bytes += fd->payload_length;
 449                qpair->counters.input_requests++;
 450        } else if (fd->io_dir == NVMEFC_FCP_WRITE) {
 451                cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
 452                if ((vha->flags.nvme_first_burst) &&
 453                    (sp->fcport->nvme_prli_service_param &
 454                        NVME_PRLI_SP_FIRST_BURST)) {
 455                        if ((fd->payload_length <=
 456                            sp->fcport->nvme_first_burst_size) ||
 457                                (sp->fcport->nvme_first_burst_size == 0))
 458                                cmd_pkt->control_flags |=
 459                                        cpu_to_le16(CF_NVME_FIRST_BURST_ENABLE);
 460                }
 461                qpair->counters.output_bytes += fd->payload_length;
 462                qpair->counters.output_requests++;
 463        } else if (fd->io_dir == 0) {
 464                cmd_pkt->control_flags = 0;
 465        }
 466        /* Set BIT_13 of control flags for Async event */
 467        if (vha->flags.nvme2_enabled &&
 468            cmd->sqe.common.opcode == nvme_admin_async_event) {
 469                cmd_pkt->control_flags |= cpu_to_le16(CF_ADMIN_ASYNC_EVENT);
 470        }
 471
 472        /* Set NPORT-ID */
 473        cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
 474        cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
 475        cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
 476        cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
 477        cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
 478
 479        /* NVME RSP IU */
 480        cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen);
 481        put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address);
 482
 483        /* NVME CNMD IU */
 484        cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen);
 485        cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(fd->cmddma);
 486
 487        cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
 488        cmd_pkt->byte_count = cpu_to_le32(fd->payload_length);
 489
 490        /* One DSD is available in the Command Type NVME IOCB */
 491        avail_dsds = 1;
 492        cur_dsd = &cmd_pkt->nvme_dsd;
 493        sgl = fd->first_sgl;
 494
 495        /* Load data segments */
 496        for_each_sg(sgl, sg, tot_dsds, i) {
 497                cont_a64_entry_t *cont_pkt;
 498
 499                /* Allocate additional continuation packets? */
 500                if (avail_dsds == 0) {
 501                        /*
 502                         * Five DSDs are available in the Continuation
 503                         * Type 1 IOCB.
 504                         */
 505
 506                        /* Adjust ring index */
 507                        req->ring_index++;
 508                        if (req->ring_index == req->length) {
 509                                req->ring_index = 0;
 510                                req->ring_ptr = req->ring;
 511                        } else {
 512                                req->ring_ptr++;
 513                        }
 514                        cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
 515                        put_unaligned_le32(CONTINUE_A64_TYPE,
 516                                           &cont_pkt->entry_type);
 517
 518                        cur_dsd = cont_pkt->dsd;
 519                        avail_dsds = ARRAY_SIZE(cont_pkt->dsd);
 520                }
 521
 522                append_dsd64(&cur_dsd, sg);
 523                avail_dsds--;
 524        }
 525
 526        /* Set total entry count. */
 527        cmd_pkt->entry_count = (uint8_t)req_cnt;
 528        wmb();
 529
 530        /* Adjust ring index. */
 531        req->ring_index++;
 532        if (req->ring_index == req->length) {
 533                req->ring_index = 0;
 534                req->ring_ptr = req->ring;
 535        } else {
 536                req->ring_ptr++;
 537        }
 538
 539        /* ignore nvme async cmd due to long timeout */
 540        if (!nvme->u.nvme.aen_op)
 541                sp->qpair->cmd_cnt++;
 542
 543        /* Set chip new ring index. */
 544        wrt_reg_dword(req->req_q_in, req->ring_index);
 545
 546queuing_error:
 547        spin_unlock_irqrestore(&qpair->qp_lock, flags);
 548
 549        return rval;
 550}
 551
 552/* Post a command */
 553static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport,
 554    struct nvme_fc_remote_port *rport, void *hw_queue_handle,
 555    struct nvmefc_fcp_req *fd)
 556{
 557        fc_port_t *fcport;
 558        struct srb_iocb *nvme;
 559        struct scsi_qla_host *vha;
 560        int rval;
 561        srb_t *sp;
 562        struct qla_qpair *qpair = hw_queue_handle;
 563        struct nvme_private *priv = fd->private;
 564        struct qla_nvme_rport *qla_rport = rport->private;
 565
 566        if (!priv) {
 567                /* nvme association has been torn down */
 568                return -ENODEV;
 569        }
 570
 571        fcport = qla_rport->fcport;
 572
 573        if (unlikely(!qpair || !fcport || fcport->deleted))
 574                return -EBUSY;
 575
 576        if (!(fcport->nvme_flag & NVME_FLAG_REGISTERED))
 577                return -ENODEV;
 578
 579        vha = fcport->vha;
 580
 581        if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
 582                return -EBUSY;
 583
 584        /*
 585         * If we know the dev is going away while the transport is still sending
 586         * IO's return busy back to stall the IO Q.  This happens when the
 587         * link goes away and fw hasn't notified us yet, but IO's are being
 588         * returned. If the dev comes back quickly we won't exhaust the IO
 589         * retry count at the core.
 590         */
 591        if (fcport->nvme_flag & NVME_FLAG_RESETTING)
 592                return -EBUSY;
 593
 594        /* Alloc SRB structure */
 595        sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
 596        if (!sp)
 597                return -EBUSY;
 598
 599        init_waitqueue_head(&sp->nvme_ls_waitq);
 600        kref_init(&sp->cmd_kref);
 601        spin_lock_init(&priv->cmd_lock);
 602        sp->priv = priv;
 603        priv->sp = sp;
 604        sp->type = SRB_NVME_CMD;
 605        sp->name = "nvme_cmd";
 606        sp->done = qla_nvme_sp_done;
 607        sp->put_fn = qla_nvme_release_fcp_cmd_kref;
 608        sp->qpair = qpair;
 609        sp->vha = vha;
 610        sp->cmd_sp = sp;
 611        nvme = &sp->u.iocb_cmd;
 612        nvme->u.nvme.desc = fd;
 613
 614        rval = qla2x00_start_nvme_mq(sp);
 615        if (rval != QLA_SUCCESS) {
 616                ql_log(ql_log_warn, vha, 0x212d,
 617                    "qla2x00_start_nvme_mq failed = %d\n", rval);
 618                wake_up(&sp->nvme_ls_waitq);
 619                sp->priv = NULL;
 620                priv->sp = NULL;
 621                qla2xxx_rel_qpair_sp(sp->qpair, sp);
 622        }
 623
 624        return rval;
 625}
 626
 627static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport)
 628{
 629        struct scsi_qla_host *vha = lport->private;
 630
 631        ql_log(ql_log_info, vha, 0x210f,
 632            "localport delete of %p completed.\n", vha->nvme_local_port);
 633        vha->nvme_local_port = NULL;
 634        complete(&vha->nvme_del_done);
 635}
 636
 637static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
 638{
 639        fc_port_t *fcport;
 640        struct qla_nvme_rport *qla_rport = rport->private;
 641
 642        fcport = qla_rport->fcport;
 643        fcport->nvme_remote_port = NULL;
 644        fcport->nvme_flag &= ~NVME_FLAG_REGISTERED;
 645        fcport->nvme_flag &= ~NVME_FLAG_DELETING;
 646        ql_log(ql_log_info, fcport->vha, 0x2110,
 647            "remoteport_delete of %p %8phN completed.\n",
 648            fcport, fcport->port_name);
 649        complete(&fcport->nvme_del_done);
 650}
 651
 652static struct nvme_fc_port_template qla_nvme_fc_transport = {
 653        .localport_delete = qla_nvme_localport_delete,
 654        .remoteport_delete = qla_nvme_remoteport_delete,
 655        .create_queue   = qla_nvme_alloc_queue,
 656        .delete_queue   = NULL,
 657        .ls_req         = qla_nvme_ls_req,
 658        .ls_abort       = qla_nvme_ls_abort,
 659        .fcp_io         = qla_nvme_post_cmd,
 660        .fcp_abort      = qla_nvme_fcp_abort,
 661        .max_hw_queues  = 8,
 662        .max_sgl_segments = 1024,
 663        .max_dif_sgl_segments = 64,
 664        .dma_boundary = 0xFFFFFFFF,
 665        .local_priv_sz  = 8,
 666        .remote_priv_sz = sizeof(struct qla_nvme_rport),
 667        .lsrqst_priv_sz = sizeof(struct nvme_private),
 668        .fcprqst_priv_sz = sizeof(struct nvme_private),
 669};
 670
 671void qla_nvme_unregister_remote_port(struct fc_port *fcport)
 672{
 673        int ret;
 674
 675        if (!IS_ENABLED(CONFIG_NVME_FC))
 676                return;
 677
 678        ql_log(ql_log_warn, fcport->vha, 0x2112,
 679            "%s: unregister remoteport on %p %8phN\n",
 680            __func__, fcport, fcport->port_name);
 681
 682        if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags))
 683                nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
 684
 685        init_completion(&fcport->nvme_del_done);
 686        ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
 687        if (ret)
 688                ql_log(ql_log_info, fcport->vha, 0x2114,
 689                        "%s: Failed to unregister nvme_remote_port (%d)\n",
 690                            __func__, ret);
 691        wait_for_completion(&fcport->nvme_del_done);
 692}
 693
 694void qla_nvme_delete(struct scsi_qla_host *vha)
 695{
 696        int nv_ret;
 697
 698        if (!IS_ENABLED(CONFIG_NVME_FC))
 699                return;
 700
 701        if (vha->nvme_local_port) {
 702                init_completion(&vha->nvme_del_done);
 703                ql_log(ql_log_info, vha, 0x2116,
 704                        "unregister localport=%p\n",
 705                        vha->nvme_local_port);
 706                nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port);
 707                if (nv_ret)
 708                        ql_log(ql_log_info, vha, 0x2115,
 709                            "Unregister of localport failed\n");
 710                else
 711                        wait_for_completion(&vha->nvme_del_done);
 712        }
 713}
 714
 715int qla_nvme_register_hba(struct scsi_qla_host *vha)
 716{
 717        struct nvme_fc_port_template *tmpl;
 718        struct qla_hw_data *ha;
 719        struct nvme_fc_port_info pinfo;
 720        int ret = -EINVAL;
 721
 722        if (!IS_ENABLED(CONFIG_NVME_FC))
 723                return ret;
 724
 725        ha = vha->hw;
 726        tmpl = &qla_nvme_fc_transport;
 727
 728        WARN_ON(vha->nvme_local_port);
 729
 730        if (ha->max_req_queues < 3) {
 731                if (!ha->flags.max_req_queue_warned)
 732                        ql_log(ql_log_info, vha, 0x2120,
 733                               "%s: Disabling FC-NVME due to lack of free queue pairs (%d).\n",
 734                               __func__, ha->max_req_queues);
 735                ha->flags.max_req_queue_warned = 1;
 736                return ret;
 737        }
 738
 739        qla_nvme_fc_transport.max_hw_queues =
 740            min((uint8_t)(qla_nvme_fc_transport.max_hw_queues),
 741                (uint8_t)(ha->max_req_queues - 2));
 742
 743        pinfo.node_name = wwn_to_u64(vha->node_name);
 744        pinfo.port_name = wwn_to_u64(vha->port_name);
 745        pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR;
 746        pinfo.port_id = vha->d_id.b24;
 747
 748        ql_log(ql_log_info, vha, 0xffff,
 749            "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n",
 750            pinfo.node_name, pinfo.port_name, pinfo.port_id);
 751        qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary;
 752
 753        ret = nvme_fc_register_localport(&pinfo, tmpl,
 754            get_device(&ha->pdev->dev), &vha->nvme_local_port);
 755        if (ret) {
 756                ql_log(ql_log_warn, vha, 0xffff,
 757                    "register_localport failed: ret=%x\n", ret);
 758        } else {
 759                vha->nvme_local_port->private = vha;
 760        }
 761
 762        return ret;
 763}
 764
 765void qla_nvme_abort_set_option(struct abort_entry_24xx *abt, srb_t *orig_sp)
 766{
 767        struct qla_hw_data *ha;
 768
 769        if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp)))
 770                return;
 771
 772        ha = orig_sp->fcport->vha->hw;
 773
 774        WARN_ON_ONCE(abt->options & cpu_to_le16(BIT_0));
 775        /* Use Driver Specified Retry Count */
 776        abt->options |= cpu_to_le16(AOF_ABTS_RTY_CNT);
 777        abt->drv.abts_rty_cnt = cpu_to_le16(2);
 778        /* Use specified response timeout */
 779        abt->options |= cpu_to_le16(AOF_RSP_TIMEOUT);
 780        /* set it to 2 * r_a_tov in secs */
 781        abt->drv.rsp_timeout = cpu_to_le16(2 * (ha->r_a_tov / 10));
 782}
 783
 784void qla_nvme_abort_process_comp_status(struct abort_entry_24xx *abt, srb_t *orig_sp)
 785{
 786        u16     comp_status;
 787        struct scsi_qla_host *vha;
 788
 789        if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp)))
 790                return;
 791
 792        vha = orig_sp->fcport->vha;
 793
 794        comp_status = le16_to_cpu(abt->comp_status);
 795        switch (comp_status) {
 796        case CS_RESET:          /* reset event aborted */
 797        case CS_ABORTED:        /* IOCB was cleaned */
 798        /* N_Port handle is not currently logged in */
 799        case CS_TIMEOUT:
 800        /* N_Port handle was logged out while waiting for ABTS to complete */
 801        case CS_PORT_UNAVAILABLE:
 802        /* Firmware found that the port name changed */
 803        case CS_PORT_LOGGED_OUT:
 804        /* BA_RJT was received for the ABTS */
 805        case CS_PORT_CONFIG_CHG:
 806                ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf09d,
 807                       "Abort I/O IOCB completed with error, comp_status=%x\n",
 808                comp_status);
 809                break;
 810
 811        /* BA_RJT was received for the ABTS */
 812        case CS_REJECT_RECEIVED:
 813                ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf09e,
 814                       "BA_RJT was received for the ABTS rjt_vendorUnique = %u",
 815                        abt->fw.ba_rjt_vendorUnique);
 816                ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf09e,
 817                       "ba_rjt_reasonCodeExpl = %u, ba_rjt_reasonCode = %u\n",
 818                       abt->fw.ba_rjt_reasonCodeExpl, abt->fw.ba_rjt_reasonCode);
 819                break;
 820
 821        case CS_COMPLETE:
 822                ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf09f,
 823                       "IOCB request is completed successfully comp_status=%x\n",
 824                comp_status);
 825                break;
 826
 827        case CS_IOCB_ERROR:
 828                ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf0a0,
 829                       "IOCB request is failed, comp_status=%x\n", comp_status);
 830                break;
 831
 832        default:
 833                ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf0a1,
 834                       "Invalid Abort IO IOCB Completion Status %x\n",
 835                comp_status);
 836                break;
 837        }
 838}
 839
 840inline void qla_wait_nvme_release_cmd_kref(srb_t *orig_sp)
 841{
 842        if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp)))
 843                return;
 844        kref_put(&orig_sp->cmd_kref, orig_sp->put_fn);
 845}
 846
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