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 /* Set chip new ring index. */ 540 wrt_reg_dword(req->req_q_in, req->ring_index); 541 542 queuing_error: 543 spin_unlock_irqrestore(&qpair->qp_lock, flags); 544 545 return rval; 546 } 547 548 /* Post a command */ 549 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport, 550 struct nvme_fc_remote_port *rport, void *hw_queue_handle, 551 struct nvmefc_fcp_req *fd) 552 { 553 fc_port_t *fcport; 554 struct srb_iocb *nvme; 555 struct scsi_qla_host *vha; 556 int rval; 557 srb_t *sp; 558 struct qla_qpair *qpair = hw_queue_handle; 559 struct nvme_private *priv = fd->private; 560 struct qla_nvme_rport *qla_rport = rport->private; 561 562 if (!priv) { 563 /* nvme association has been torn down */ 564 return -ENODEV; 565 } 566 567 fcport = qla_rport->fcport; 568 569 if (unlikely(!qpair || !fcport || fcport->deleted)) 570 return -EBUSY; 571 572 if (!(fcport->nvme_flag & NVME_FLAG_REGISTERED)) 573 return -ENODEV; 574 575 vha = fcport->vha; 576 577 if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) 578 return -EBUSY; 579 580 /* 581 * If we know the dev is going away while the transport is still sending 582 * IO's return busy back to stall the IO Q. This happens when the 583 * link goes away and fw hasn't notified us yet, but IO's are being 584 * returned. If the dev comes back quickly we won't exhaust the IO 585 * retry count at the core. 586 */ 587 if (fcport->nvme_flag & NVME_FLAG_RESETTING) 588 return -EBUSY; 589 590 /* Alloc SRB structure */ 591 sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC); 592 if (!sp) 593 return -EBUSY; 594 595 init_waitqueue_head(&sp->nvme_ls_waitq); 596 kref_init(&sp->cmd_kref); 597 spin_lock_init(&priv->cmd_lock); 598 sp->priv = priv; 599 priv->sp = sp; 600 sp->type = SRB_NVME_CMD; 601 sp->name = "nvme_cmd"; 602 sp->done = qla_nvme_sp_done; 603 sp->put_fn = qla_nvme_release_fcp_cmd_kref; 604 sp->qpair = qpair; 605 sp->vha = vha; 606 sp->cmd_sp = sp; 607 nvme = &sp->u.iocb_cmd; 608 nvme->u.nvme.desc = fd; 609 610 rval = qla2x00_start_nvme_mq(sp); 611 if (rval != QLA_SUCCESS) { 612 ql_log(ql_log_warn, vha, 0x212d, 613 "qla2x00_start_nvme_mq failed = %d\n", rval); 614 wake_up(&sp->nvme_ls_waitq); 615 sp->priv = NULL; 616 priv->sp = NULL; 617 qla2xxx_rel_qpair_sp(sp->qpair, sp); 618 } 619 620 return rval; 621 } 622 623 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport) 624 { 625 struct scsi_qla_host *vha = lport->private; 626 627 ql_log(ql_log_info, vha, 0x210f, 628 "localport delete of %p completed.\n", vha->nvme_local_port); 629 vha->nvme_local_port = NULL; 630 complete(&vha->nvme_del_done); 631 } 632 633 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport) 634 { 635 fc_port_t *fcport; 636 struct qla_nvme_rport *qla_rport = rport->private; 637 638 fcport = qla_rport->fcport; 639 fcport->nvme_remote_port = NULL; 640 fcport->nvme_flag &= ~NVME_FLAG_REGISTERED; 641 fcport->nvme_flag &= ~NVME_FLAG_DELETING; 642 ql_log(ql_log_info, fcport->vha, 0x2110, 643 "remoteport_delete of %p %8phN completed.\n", 644 fcport, fcport->port_name); 645 complete(&fcport->nvme_del_done); 646 } 647 648 static struct nvme_fc_port_template qla_nvme_fc_transport = { 649 .localport_delete = qla_nvme_localport_delete, 650 .remoteport_delete = qla_nvme_remoteport_delete, 651 .create_queue = qla_nvme_alloc_queue, 652 .delete_queue = NULL, 653 .ls_req = qla_nvme_ls_req, 654 .ls_abort = qla_nvme_ls_abort, 655 .fcp_io = qla_nvme_post_cmd, 656 .fcp_abort = qla_nvme_fcp_abort, 657 .max_hw_queues = 8, 658 .max_sgl_segments = 1024, 659 .max_dif_sgl_segments = 64, 660 .dma_boundary = 0xFFFFFFFF, 661 .local_priv_sz = 8, 662 .remote_priv_sz = sizeof(struct qla_nvme_rport), 663 .lsrqst_priv_sz = sizeof(struct nvme_private), 664 .fcprqst_priv_sz = sizeof(struct nvme_private), 665 }; 666 667 void qla_nvme_unregister_remote_port(struct fc_port *fcport) 668 { 669 int ret; 670 671 if (!IS_ENABLED(CONFIG_NVME_FC)) 672 return; 673 674 ql_log(ql_log_warn, NULL, 0x2112, 675 "%s: unregister remoteport on %p %8phN\n", 676 __func__, fcport, fcport->port_name); 677 678 if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags)) 679 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0); 680 681 init_completion(&fcport->nvme_del_done); 682 ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port); 683 if (ret) 684 ql_log(ql_log_info, fcport->vha, 0x2114, 685 "%s: Failed to unregister nvme_remote_port (%d)\n", 686 __func__, ret); 687 wait_for_completion(&fcport->nvme_del_done); 688 } 689 690 void qla_nvme_delete(struct scsi_qla_host *vha) 691 { 692 int nv_ret; 693 694 if (!IS_ENABLED(CONFIG_NVME_FC)) 695 return; 696 697 if (vha->nvme_local_port) { 698 init_completion(&vha->nvme_del_done); 699 ql_log(ql_log_info, vha, 0x2116, 700 "unregister localport=%p\n", 701 vha->nvme_local_port); 702 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port); 703 if (nv_ret) 704 ql_log(ql_log_info, vha, 0x2115, 705 "Unregister of localport failed\n"); 706 else 707 wait_for_completion(&vha->nvme_del_done); 708 } 709 } 710 711 int qla_nvme_register_hba(struct scsi_qla_host *vha) 712 { 713 struct nvme_fc_port_template *tmpl; 714 struct qla_hw_data *ha; 715 struct nvme_fc_port_info pinfo; 716 int ret = -EINVAL; 717 718 if (!IS_ENABLED(CONFIG_NVME_FC)) 719 return ret; 720 721 ha = vha->hw; 722 tmpl = &qla_nvme_fc_transport; 723 724 WARN_ON(vha->nvme_local_port); 725 726 if (ha->max_req_queues < 3) { 727 if (!ha->flags.max_req_queue_warned) 728 ql_log(ql_log_info, vha, 0x2120, 729 "%s: Disabling FC-NVME due to lack of free queue pairs (%d).\n", 730 __func__, ha->max_req_queues); 731 ha->flags.max_req_queue_warned = 1; 732 return ret; 733 } 734 735 qla_nvme_fc_transport.max_hw_queues = 736 min((uint8_t)(qla_nvme_fc_transport.max_hw_queues), 737 (uint8_t)(ha->max_req_queues - 2)); 738 739 pinfo.node_name = wwn_to_u64(vha->node_name); 740 pinfo.port_name = wwn_to_u64(vha->port_name); 741 pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR; 742 pinfo.port_id = vha->d_id.b24; 743 744 ql_log(ql_log_info, vha, 0xffff, 745 "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n", 746 pinfo.node_name, pinfo.port_name, pinfo.port_id); 747 qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary; 748 749 ret = nvme_fc_register_localport(&pinfo, tmpl, 750 get_device(&ha->pdev->dev), &vha->nvme_local_port); 751 if (ret) { 752 ql_log(ql_log_warn, vha, 0xffff, 753 "register_localport failed: ret=%x\n", ret); 754 } else { 755 vha->nvme_local_port->private = vha; 756 } 757 758 return ret; 759 } 760 761 void qla_nvme_abort_set_option(struct abort_entry_24xx *abt, srb_t *orig_sp) 762 { 763 struct qla_hw_data *ha; 764 765 if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp))) 766 return; 767 768 ha = orig_sp->fcport->vha->hw; 769 770 WARN_ON_ONCE(abt->options & cpu_to_le16(BIT_0)); 771 /* Use Driver Specified Retry Count */ 772 abt->options |= cpu_to_le16(AOF_ABTS_RTY_CNT); 773 abt->drv.abts_rty_cnt = cpu_to_le16(2); 774 /* Use specified response timeout */ 775 abt->options |= cpu_to_le16(AOF_RSP_TIMEOUT); 776 /* set it to 2 * r_a_tov in secs */ 777 abt->drv.rsp_timeout = cpu_to_le16(2 * (ha->r_a_tov / 10)); 778 } 779 780 void qla_nvme_abort_process_comp_status(struct abort_entry_24xx *abt, srb_t *orig_sp) 781 { 782 u16 comp_status; 783 struct scsi_qla_host *vha; 784 785 if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp))) 786 return; 787 788 vha = orig_sp->fcport->vha; 789 790 comp_status = le16_to_cpu(abt->comp_status); 791 switch (comp_status) { 792 case CS_RESET: /* reset event aborted */ 793 case CS_ABORTED: /* IOCB was cleaned */ 794 /* N_Port handle is not currently logged in */ 795 case CS_TIMEOUT: 796 /* N_Port handle was logged out while waiting for ABTS to complete */ 797 case CS_PORT_UNAVAILABLE: 798 /* Firmware found that the port name changed */ 799 case CS_PORT_LOGGED_OUT: 800 /* BA_RJT was received for the ABTS */ 801 case CS_PORT_CONFIG_CHG: 802 ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf09d, 803 "Abort I/O IOCB completed with error, comp_status=%x\n", 804 comp_status); 805 break; 806 807 /* BA_RJT was received for the ABTS */ 808 case CS_REJECT_RECEIVED: 809 ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf09e, 810 "BA_RJT was received for the ABTS rjt_vendorUnique = %u", 811 abt->fw.ba_rjt_vendorUnique); 812 ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf09e, 813 "ba_rjt_reasonCodeExpl = %u, ba_rjt_reasonCode = %u\n", 814 abt->fw.ba_rjt_reasonCodeExpl, abt->fw.ba_rjt_reasonCode); 815 break; 816 817 case CS_COMPLETE: 818 ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf09f, 819 "IOCB request is completed successfully comp_status=%x\n", 820 comp_status); 821 break; 822 823 case CS_IOCB_ERROR: 824 ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf0a0, 825 "IOCB request is failed, comp_status=%x\n", comp_status); 826 break; 827 828 default: 829 ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf0a1, 830 "Invalid Abort IO IOCB Completion Status %x\n", 831 comp_status); 832 break; 833 } 834 } 835 836 inline void qla_wait_nvme_release_cmd_kref(srb_t *orig_sp) 837 { 838 if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp))) 839 return; 840 kref_put(&orig_sp->cmd_kref, orig_sp->put_fn); 841 } 842