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 int 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 */ 80 static 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 } 122 123 static 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 = le16_to_cpu(nvme->u.nvme.rsp_pyld_len); 142 fd->status = NVME_SC_SUCCESS; 143 } else { 144 fd->rcv_rsplen = 0; 145 fd->transferred_length = 0; 146 fd->status = NVME_SC_INTERNAL; 147 } 148 spin_unlock_irqrestore(&priv->cmd_lock, flags); 149 150 fd->done(fd); 151 out: 152 qla2xxx_rel_qpair_sp(sp->qpair, sp); 153 } 154 155 static void qla_nvme_release_ls_cmd_kref(struct kref *kref) 156 { 157 struct srb *sp = container_of(kref, struct srb, cmd_kref); 158 struct nvme_private *priv = (struct nvme_private *)sp->priv; 159 struct nvmefc_ls_req *fd; 160 unsigned long flags; 161 162 if (!priv) 163 goto out; 164 165 spin_lock_irqsave(&priv->cmd_lock, flags); 166 priv->sp = NULL; 167 sp->priv = NULL; 168 spin_unlock_irqrestore(&priv->cmd_lock, flags); 169 170 fd = priv->fd; 171 fd->done(fd, priv->comp_status); 172 out: 173 qla2x00_rel_sp(sp); 174 } 175 176 static void qla_nvme_ls_complete(struct work_struct *work) 177 { 178 struct nvme_private *priv = 179 container_of(work, struct nvme_private, ls_work); 180 181 kref_put(&priv->sp->cmd_kref, qla_nvme_release_ls_cmd_kref); 182 } 183 184 static void qla_nvme_sp_ls_done(srb_t *sp, int res) 185 { 186 struct nvme_private *priv = sp->priv; 187 188 if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0)) 189 return; 190 191 if (res) 192 res = -EINVAL; 193 194 priv->comp_status = res; 195 INIT_WORK(&priv->ls_work, qla_nvme_ls_complete); 196 schedule_work(&priv->ls_work); 197 } 198 199 /* it assumed that QPair lock is held. */ 200 static void qla_nvme_sp_done(srb_t *sp, int res) 201 { 202 struct nvme_private *priv = sp->priv; 203 204 priv->comp_status = res; 205 kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref); 206 207 return; 208 } 209 210 static void qla_nvme_abort_work(struct work_struct *work) 211 { 212 struct nvme_private *priv = 213 container_of(work, struct nvme_private, abort_work); 214 srb_t *sp = priv->sp; 215 fc_port_t *fcport = sp->fcport; 216 struct qla_hw_data *ha = fcport->vha->hw; 217 int rval; 218 219 ql_dbg(ql_dbg_io, fcport->vha, 0xffff, 220 "%s called for sp=%p, hndl=%x on fcport=%p deleted=%d\n", 221 __func__, sp, sp->handle, fcport, fcport->deleted); 222 223 if (!ha->flags.fw_started && fcport->deleted) 224 goto out; 225 226 if (ha->flags.host_shutting_down) { 227 ql_log(ql_log_info, sp->fcport->vha, 0xffff, 228 "%s Calling done on sp: %p, type: 0x%x\n", 229 __func__, sp, sp->type); 230 sp->done(sp, 0); 231 goto out; 232 } 233 234 rval = ha->isp_ops->abort_command(sp); 235 236 ql_dbg(ql_dbg_io, fcport->vha, 0x212b, 237 "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n", 238 __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted", 239 sp, sp->handle, fcport, rval); 240 241 out: 242 /* kref_get was done before work was schedule. */ 243 kref_put(&sp->cmd_kref, sp->put_fn); 244 } 245 246 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport, 247 struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd) 248 { 249 struct nvme_private *priv = fd->private; 250 unsigned long flags; 251 252 spin_lock_irqsave(&priv->cmd_lock, flags); 253 if (!priv->sp) { 254 spin_unlock_irqrestore(&priv->cmd_lock, flags); 255 return; 256 } 257 258 if (!kref_get_unless_zero(&priv->sp->cmd_kref)) { 259 spin_unlock_irqrestore(&priv->cmd_lock, flags); 260 return; 261 } 262 spin_unlock_irqrestore(&priv->cmd_lock, flags); 263 264 INIT_WORK(&priv->abort_work, qla_nvme_abort_work); 265 schedule_work(&priv->abort_work); 266 } 267 268 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport, 269 struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd) 270 { 271 struct qla_nvme_rport *qla_rport = rport->private; 272 fc_port_t *fcport = qla_rport->fcport; 273 struct srb_iocb *nvme; 274 struct nvme_private *priv = fd->private; 275 struct scsi_qla_host *vha; 276 int rval = QLA_FUNCTION_FAILED; 277 struct qla_hw_data *ha; 278 srb_t *sp; 279 280 281 if (!fcport || (fcport && fcport->deleted)) 282 return rval; 283 284 vha = fcport->vha; 285 ha = vha->hw; 286 287 if (!ha->flags.fw_started) 288 return rval; 289 290 /* Alloc SRB structure */ 291 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 292 if (!sp) 293 return rval; 294 295 sp->type = SRB_NVME_LS; 296 sp->name = "nvme_ls"; 297 sp->done = qla_nvme_sp_ls_done; 298 sp->put_fn = qla_nvme_release_ls_cmd_kref; 299 sp->priv = priv; 300 priv->sp = sp; 301 kref_init(&sp->cmd_kref); 302 spin_lock_init(&priv->cmd_lock); 303 nvme = &sp->u.iocb_cmd; 304 priv->fd = fd; 305 nvme->u.nvme.desc = fd; 306 nvme->u.nvme.dir = 0; 307 nvme->u.nvme.dl = 0; 308 nvme->u.nvme.cmd_len = fd->rqstlen; 309 nvme->u.nvme.rsp_len = fd->rsplen; 310 nvme->u.nvme.rsp_dma = fd->rspdma; 311 nvme->u.nvme.timeout_sec = fd->timeout; 312 nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr, 313 fd->rqstlen, DMA_TO_DEVICE); 314 dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma, 315 fd->rqstlen, DMA_TO_DEVICE); 316 317 rval = qla2x00_start_sp(sp); 318 if (rval != QLA_SUCCESS) { 319 ql_log(ql_log_warn, vha, 0x700e, 320 "qla2x00_start_sp failed = %d\n", rval); 321 wake_up(&sp->nvme_ls_waitq); 322 sp->priv = NULL; 323 priv->sp = NULL; 324 qla2x00_rel_sp(sp); 325 return rval; 326 } 327 328 return rval; 329 } 330 331 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport, 332 struct nvme_fc_remote_port *rport, void *hw_queue_handle, 333 struct nvmefc_fcp_req *fd) 334 { 335 struct nvme_private *priv = fd->private; 336 unsigned long flags; 337 338 spin_lock_irqsave(&priv->cmd_lock, flags); 339 if (!priv->sp) { 340 spin_unlock_irqrestore(&priv->cmd_lock, flags); 341 return; 342 } 343 if (!kref_get_unless_zero(&priv->sp->cmd_kref)) { 344 spin_unlock_irqrestore(&priv->cmd_lock, flags); 345 return; 346 } 347 spin_unlock_irqrestore(&priv->cmd_lock, flags); 348 349 INIT_WORK(&priv->abort_work, qla_nvme_abort_work); 350 schedule_work(&priv->abort_work); 351 } 352 353 static inline int qla2x00_start_nvme_mq(srb_t *sp) 354 { 355 unsigned long flags; 356 uint32_t *clr_ptr; 357 uint32_t handle; 358 struct cmd_nvme *cmd_pkt; 359 uint16_t cnt, i; 360 uint16_t req_cnt; 361 uint16_t tot_dsds; 362 uint16_t avail_dsds; 363 struct dsd64 *cur_dsd; 364 struct req_que *req = NULL; 365 struct scsi_qla_host *vha = sp->fcport->vha; 366 struct qla_hw_data *ha = vha->hw; 367 struct qla_qpair *qpair = sp->qpair; 368 struct srb_iocb *nvme = &sp->u.iocb_cmd; 369 struct scatterlist *sgl, *sg; 370 struct nvmefc_fcp_req *fd = nvme->u.nvme.desc; 371 uint32_t rval = QLA_SUCCESS; 372 373 /* Setup qpair pointers */ 374 req = qpair->req; 375 tot_dsds = fd->sg_cnt; 376 377 /* Acquire qpair specific lock */ 378 spin_lock_irqsave(&qpair->qp_lock, flags); 379 380 handle = qla2xxx_get_next_handle(req); 381 if (handle == 0) { 382 rval = -EBUSY; 383 goto queuing_error; 384 } 385 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 386 if (req->cnt < (req_cnt + 2)) { 387 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr : 388 rd_reg_dword_relaxed(req->req_q_out); 389 390 if (req->ring_index < cnt) 391 req->cnt = cnt - req->ring_index; 392 else 393 req->cnt = req->length - (req->ring_index - cnt); 394 395 if (req->cnt < (req_cnt + 2)){ 396 rval = -EBUSY; 397 goto queuing_error; 398 } 399 } 400 401 if (unlikely(!fd->sqid)) { 402 struct nvme_fc_cmd_iu *cmd = fd->cmdaddr; 403 404 if (cmd->sqe.common.opcode == nvme_admin_async_event) { 405 nvme->u.nvme.aen_op = 1; 406 atomic_inc(&ha->nvme_active_aen_cnt); 407 } 408 } 409 410 /* Build command packet. */ 411 req->current_outstanding_cmd = handle; 412 req->outstanding_cmds[handle] = sp; 413 sp->handle = handle; 414 req->cnt -= req_cnt; 415 416 cmd_pkt = (struct cmd_nvme *)req->ring_ptr; 417 cmd_pkt->handle = make_handle(req->id, handle); 418 419 /* Zero out remaining portion of packet. */ 420 clr_ptr = (uint32_t *)cmd_pkt + 2; 421 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 422 423 cmd_pkt->entry_status = 0; 424 425 /* Update entry type to indicate Command NVME IOCB */ 426 cmd_pkt->entry_type = COMMAND_NVME; 427 428 /* No data transfer how do we check buffer len == 0?? */ 429 if (fd->io_dir == NVMEFC_FCP_READ) { 430 cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA); 431 vha->qla_stats.input_bytes += fd->payload_length; 432 vha->qla_stats.input_requests++; 433 } else if (fd->io_dir == NVMEFC_FCP_WRITE) { 434 cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA); 435 if ((vha->flags.nvme_first_burst) && 436 (sp->fcport->nvme_prli_service_param & 437 NVME_PRLI_SP_FIRST_BURST)) { 438 if ((fd->payload_length <= 439 sp->fcport->nvme_first_burst_size) || 440 (sp->fcport->nvme_first_burst_size == 0)) 441 cmd_pkt->control_flags |= 442 cpu_to_le16(CF_NVME_FIRST_BURST_ENABLE); 443 } 444 vha->qla_stats.output_bytes += fd->payload_length; 445 vha->qla_stats.output_requests++; 446 } else if (fd->io_dir == 0) { 447 cmd_pkt->control_flags = 0; 448 } 449 450 /* Set NPORT-ID */ 451 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 452 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 453 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 454 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 455 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 456 457 /* NVME RSP IU */ 458 cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen); 459 put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address); 460 461 /* NVME CNMD IU */ 462 cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen); 463 cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(fd->cmddma); 464 465 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 466 cmd_pkt->byte_count = cpu_to_le32(fd->payload_length); 467 468 /* One DSD is available in the Command Type NVME IOCB */ 469 avail_dsds = 1; 470 cur_dsd = &cmd_pkt->nvme_dsd; 471 sgl = fd->first_sgl; 472 473 /* Load data segments */ 474 for_each_sg(sgl, sg, tot_dsds, i) { 475 cont_a64_entry_t *cont_pkt; 476 477 /* Allocate additional continuation packets? */ 478 if (avail_dsds == 0) { 479 /* 480 * Five DSDs are available in the Continuation 481 * Type 1 IOCB. 482 */ 483 484 /* Adjust ring index */ 485 req->ring_index++; 486 if (req->ring_index == req->length) { 487 req->ring_index = 0; 488 req->ring_ptr = req->ring; 489 } else { 490 req->ring_ptr++; 491 } 492 cont_pkt = (cont_a64_entry_t *)req->ring_ptr; 493 put_unaligned_le32(CONTINUE_A64_TYPE, 494 &cont_pkt->entry_type); 495 496 cur_dsd = cont_pkt->dsd; 497 avail_dsds = ARRAY_SIZE(cont_pkt->dsd); 498 } 499 500 append_dsd64(&cur_dsd, sg); 501 avail_dsds--; 502 } 503 504 /* Set total entry count. */ 505 cmd_pkt->entry_count = (uint8_t)req_cnt; 506 wmb(); 507 508 /* Adjust ring index. */ 509 req->ring_index++; 510 if (req->ring_index == req->length) { 511 req->ring_index = 0; 512 req->ring_ptr = req->ring; 513 } else { 514 req->ring_ptr++; 515 } 516 517 /* Set chip new ring index. */ 518 wrt_reg_dword(req->req_q_in, req->ring_index); 519 520 queuing_error: 521 spin_unlock_irqrestore(&qpair->qp_lock, flags); 522 return rval; 523 } 524 525 /* Post a command */ 526 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport, 527 struct nvme_fc_remote_port *rport, void *hw_queue_handle, 528 struct nvmefc_fcp_req *fd) 529 { 530 fc_port_t *fcport; 531 struct srb_iocb *nvme; 532 struct scsi_qla_host *vha; 533 int rval = -ENODEV; 534 srb_t *sp; 535 struct qla_qpair *qpair = hw_queue_handle; 536 struct nvme_private *priv = fd->private; 537 struct qla_nvme_rport *qla_rport = rport->private; 538 539 if (!priv) { 540 /* nvme association has been torn down */ 541 return rval; 542 } 543 544 fcport = qla_rport->fcport; 545 546 if (!qpair || !fcport || (qpair && !qpair->fw_started) || 547 (fcport && fcport->deleted)) 548 return rval; 549 550 vha = fcport->vha; 551 /* 552 * If we know the dev is going away while the transport is still sending 553 * IO's return busy back to stall the IO Q. This happens when the 554 * link goes away and fw hasn't notified us yet, but IO's are being 555 * returned. If the dev comes back quickly we won't exhaust the IO 556 * retry count at the core. 557 */ 558 if (fcport->nvme_flag & NVME_FLAG_RESETTING) 559 return -EBUSY; 560 561 /* Alloc SRB structure */ 562 sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC); 563 if (!sp) 564 return -EBUSY; 565 566 init_waitqueue_head(&sp->nvme_ls_waitq); 567 kref_init(&sp->cmd_kref); 568 spin_lock_init(&priv->cmd_lock); 569 sp->priv = priv; 570 priv->sp = sp; 571 sp->type = SRB_NVME_CMD; 572 sp->name = "nvme_cmd"; 573 sp->done = qla_nvme_sp_done; 574 sp->put_fn = qla_nvme_release_fcp_cmd_kref; 575 sp->qpair = qpair; 576 sp->vha = vha; 577 nvme = &sp->u.iocb_cmd; 578 nvme->u.nvme.desc = fd; 579 580 rval = qla2x00_start_nvme_mq(sp); 581 if (rval != QLA_SUCCESS) { 582 ql_log(ql_log_warn, vha, 0x212d, 583 "qla2x00_start_nvme_mq failed = %d\n", rval); 584 wake_up(&sp->nvme_ls_waitq); 585 sp->priv = NULL; 586 priv->sp = NULL; 587 qla2xxx_rel_qpair_sp(sp->qpair, sp); 588 } 589 590 return rval; 591 } 592 593 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport) 594 { 595 struct scsi_qla_host *vha = lport->private; 596 597 ql_log(ql_log_info, vha, 0x210f, 598 "localport delete of %p completed.\n", vha->nvme_local_port); 599 vha->nvme_local_port = NULL; 600 complete(&vha->nvme_del_done); 601 } 602 603 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport) 604 { 605 fc_port_t *fcport; 606 struct qla_nvme_rport *qla_rport = rport->private; 607 608 fcport = qla_rport->fcport; 609 fcport->nvme_remote_port = NULL; 610 fcport->nvme_flag &= ~NVME_FLAG_REGISTERED; 611 fcport->nvme_flag &= ~NVME_FLAG_DELETING; 612 ql_log(ql_log_info, fcport->vha, 0x2110, 613 "remoteport_delete of %p %8phN completed.\n", 614 fcport, fcport->port_name); 615 complete(&fcport->nvme_del_done); 616 } 617 618 static struct nvme_fc_port_template qla_nvme_fc_transport = { 619 .localport_delete = qla_nvme_localport_delete, 620 .remoteport_delete = qla_nvme_remoteport_delete, 621 .create_queue = qla_nvme_alloc_queue, 622 .delete_queue = NULL, 623 .ls_req = qla_nvme_ls_req, 624 .ls_abort = qla_nvme_ls_abort, 625 .fcp_io = qla_nvme_post_cmd, 626 .fcp_abort = qla_nvme_fcp_abort, 627 .max_hw_queues = 8, 628 .max_sgl_segments = 1024, 629 .max_dif_sgl_segments = 64, 630 .dma_boundary = 0xFFFFFFFF, 631 .local_priv_sz = 8, 632 .remote_priv_sz = sizeof(struct qla_nvme_rport), 633 .lsrqst_priv_sz = sizeof(struct nvme_private), 634 .fcprqst_priv_sz = sizeof(struct nvme_private), 635 }; 636 637 void qla_nvme_unregister_remote_port(struct fc_port *fcport) 638 { 639 int ret; 640 641 if (!IS_ENABLED(CONFIG_NVME_FC)) 642 return; 643 644 ql_log(ql_log_warn, NULL, 0x2112, 645 "%s: unregister remoteport on %p %8phN\n", 646 __func__, fcport, fcport->port_name); 647 648 if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags)) 649 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0); 650 651 init_completion(&fcport->nvme_del_done); 652 ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port); 653 if (ret) 654 ql_log(ql_log_info, fcport->vha, 0x2114, 655 "%s: Failed to unregister nvme_remote_port (%d)\n", 656 __func__, ret); 657 wait_for_completion(&fcport->nvme_del_done); 658 } 659 660 void qla_nvme_delete(struct scsi_qla_host *vha) 661 { 662 int nv_ret; 663 664 if (!IS_ENABLED(CONFIG_NVME_FC)) 665 return; 666 667 if (vha->nvme_local_port) { 668 init_completion(&vha->nvme_del_done); 669 ql_log(ql_log_info, vha, 0x2116, 670 "unregister localport=%p\n", 671 vha->nvme_local_port); 672 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port); 673 if (nv_ret) 674 ql_log(ql_log_info, vha, 0x2115, 675 "Unregister of localport failed\n"); 676 else 677 wait_for_completion(&vha->nvme_del_done); 678 } 679 } 680 681 int qla_nvme_register_hba(struct scsi_qla_host *vha) 682 { 683 struct nvme_fc_port_template *tmpl; 684 struct qla_hw_data *ha; 685 struct nvme_fc_port_info pinfo; 686 int ret = EINVAL; 687 688 if (!IS_ENABLED(CONFIG_NVME_FC)) 689 return ret; 690 691 ha = vha->hw; 692 tmpl = &qla_nvme_fc_transport; 693 694 WARN_ON(vha->nvme_local_port); 695 696 if (ha->max_req_queues < 3) { 697 if (!ha->flags.max_req_queue_warned) 698 ql_log(ql_log_info, vha, 0x2120, 699 "%s: Disabling FC-NVME due to lack of free queue pairs (%d).\n", 700 __func__, ha->max_req_queues); 701 ha->flags.max_req_queue_warned = 1; 702 return ret; 703 } 704 705 qla_nvme_fc_transport.max_hw_queues = 706 min((uint8_t)(qla_nvme_fc_transport.max_hw_queues), 707 (uint8_t)(ha->max_req_queues - 2)); 708 709 pinfo.node_name = wwn_to_u64(vha->node_name); 710 pinfo.port_name = wwn_to_u64(vha->port_name); 711 pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR; 712 pinfo.port_id = vha->d_id.b24; 713 714 ql_log(ql_log_info, vha, 0xffff, 715 "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n", 716 pinfo.node_name, pinfo.port_name, pinfo.port_id); 717 qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary; 718 719 ret = nvme_fc_register_localport(&pinfo, tmpl, 720 get_device(&ha->pdev->dev), &vha->nvme_local_port); 721 if (ret) { 722 ql_log(ql_log_warn, vha, 0xffff, 723 "register_localport failed: ret=%x\n", ret); 724 } else { 725 vha->nvme_local_port->private = vha; 726 } 727 728 return ret; 729 } 730