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 12 static struct nvme_fc_port_template qla_nvme_fc_transport; 13 14 int 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 */ 87 static 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 } 129 130 static 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); 158 out: 159 qla2xxx_rel_qpair_sp(sp->qpair, sp); 160 } 161 162 static 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); 179 out: 180 qla2x00_rel_sp(sp); 181 } 182 183 static 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 } 190 191 static 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. */ 207 static 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 } 216 217 static 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; 255 out: 256 /* kref_get was done before work was schedule. */ 257 kref_put(&sp->cmd_kref, sp->put_fn); 258 } 259 260 static 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 } 281 282 static 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 } 343 344 static 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 } 365 366 static 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); 545 546 queuing_error: 547 spin_unlock_irqrestore(&qpair->qp_lock, flags); 548 549 return rval; 550 } 551 552 /* Post a command */ 553 static 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 } 626 627 static 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 } 636 637 static 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 } 651 652 static 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 }; 670 671 void 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 } 693 694 void 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 } 714 715 int 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 } 764 765 void 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 } 783 784 void 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 } 839 840 inline 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