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 #include <linux/blk-mq-pci.h> 12 #include <linux/blk-mq.h> 13 14 static struct nvme_fc_port_template qla_nvme_fc_transport; 15 16 int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport) 17 { 18 struct qla_nvme_rport *rport; 19 struct nvme_fc_port_info req; 20 int ret; 21 22 if (!IS_ENABLED(CONFIG_NVME_FC)) 23 return 0; 24 25 if (!vha->flags.nvme_enabled) { 26 ql_log(ql_log_info, vha, 0x2100, 27 "%s: Not registering target since Host NVME is not enabled\n", 28 __func__); 29 return 0; 30 } 31 32 if (!vha->nvme_local_port && qla_nvme_register_hba(vha)) 33 return 0; 34 35 if (!(fcport->nvme_prli_service_param & 36 (NVME_PRLI_SP_TARGET | NVME_PRLI_SP_DISCOVERY)) || 37 (fcport->nvme_flag & NVME_FLAG_REGISTERED)) 38 return 0; 39 40 if (atomic_read(&fcport->state) == FCS_ONLINE) 41 return 0; 42 43 qla2x00_set_fcport_state(fcport, FCS_ONLINE); 44 45 fcport->nvme_flag &= ~NVME_FLAG_RESETTING; 46 47 memset(&req, 0, sizeof(struct nvme_fc_port_info)); 48 req.port_name = wwn_to_u64(fcport->port_name); 49 req.node_name = wwn_to_u64(fcport->node_name); 50 req.port_role = 0; 51 req.dev_loss_tmo = fcport->dev_loss_tmo; 52 53 if (fcport->nvme_prli_service_param & NVME_PRLI_SP_INITIATOR) 54 req.port_role = FC_PORT_ROLE_NVME_INITIATOR; 55 56 if (fcport->nvme_prli_service_param & NVME_PRLI_SP_TARGET) 57 req.port_role |= FC_PORT_ROLE_NVME_TARGET; 58 59 if (fcport->nvme_prli_service_param & NVME_PRLI_SP_DISCOVERY) 60 req.port_role |= FC_PORT_ROLE_NVME_DISCOVERY; 61 62 req.port_id = fcport->d_id.b24; 63 64 ql_log(ql_log_info, vha, 0x2102, 65 "%s: traddr=nn-0x%016llx:pn-0x%016llx PortID:%06x\n", 66 __func__, req.node_name, req.port_name, 67 req.port_id); 68 69 ret = nvme_fc_register_remoteport(vha->nvme_local_port, &req, 70 &fcport->nvme_remote_port); 71 if (ret) { 72 ql_log(ql_log_warn, vha, 0x212e, 73 "Failed to register remote port. Transport returned %d\n", 74 ret); 75 return ret; 76 } 77 78 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 79 fcport->dev_loss_tmo); 80 81 if (fcport->nvme_prli_service_param & NVME_PRLI_SP_SLER) 82 ql_log(ql_log_info, vha, 0x212a, 83 "PortID:%06x Supports SLER\n", req.port_id); 84 85 if (fcport->nvme_prli_service_param & NVME_PRLI_SP_PI_CTRL) 86 ql_log(ql_log_info, vha, 0x212b, 87 "PortID:%06x Supports PI control\n", req.port_id); 88 89 rport = fcport->nvme_remote_port->private; 90 rport->fcport = fcport; 91 92 fcport->nvme_flag |= NVME_FLAG_REGISTERED; 93 return 0; 94 } 95 96 /* Allocate a queue for NVMe traffic */ 97 static int qla_nvme_alloc_queue(struct nvme_fc_local_port *lport, 98 unsigned int qidx, u16 qsize, void **handle) 99 { 100 struct scsi_qla_host *vha; 101 struct qla_hw_data *ha; 102 struct qla_qpair *qpair; 103 104 /* Map admin queue and 1st IO queue to index 0 */ 105 if (qidx) 106 qidx--; 107 108 vha = (struct scsi_qla_host *)lport->private; 109 ha = vha->hw; 110 111 ql_log(ql_log_info, vha, 0x2104, 112 "%s: handle %p, idx =%d, qsize %d\n", 113 __func__, handle, qidx, qsize); 114 115 if (qidx > qla_nvme_fc_transport.max_hw_queues) { 116 ql_log(ql_log_warn, vha, 0x212f, 117 "%s: Illegal qidx=%d. Max=%d\n", 118 __func__, qidx, qla_nvme_fc_transport.max_hw_queues); 119 return -EINVAL; 120 } 121 122 /* Use base qpair if max_qpairs is 0 */ 123 if (!ha->max_qpairs) { 124 qpair = ha->base_qpair; 125 } else { 126 if (ha->queue_pair_map[qidx]) { 127 *handle = ha->queue_pair_map[qidx]; 128 ql_log(ql_log_info, vha, 0x2121, 129 "Returning existing qpair of %p for idx=%x\n", 130 *handle, qidx); 131 return 0; 132 } 133 134 qpair = qla2xxx_create_qpair(vha, 5, vha->vp_idx, true); 135 if (!qpair) { 136 ql_log(ql_log_warn, vha, 0x2122, 137 "Failed to allocate qpair\n"); 138 return -EINVAL; 139 } 140 } 141 *handle = qpair; 142 143 return 0; 144 } 145 146 static void qla_nvme_release_fcp_cmd_kref(struct kref *kref) 147 { 148 struct srb *sp = container_of(kref, struct srb, cmd_kref); 149 struct nvme_private *priv = (struct nvme_private *)sp->priv; 150 struct nvmefc_fcp_req *fd; 151 struct srb_iocb *nvme; 152 unsigned long flags; 153 154 if (!priv) 155 goto out; 156 157 nvme = &sp->u.iocb_cmd; 158 fd = nvme->u.nvme.desc; 159 160 spin_lock_irqsave(&priv->cmd_lock, flags); 161 priv->sp = NULL; 162 sp->priv = NULL; 163 if (priv->comp_status == QLA_SUCCESS) { 164 fd->rcv_rsplen = le16_to_cpu(nvme->u.nvme.rsp_pyld_len); 165 fd->status = NVME_SC_SUCCESS; 166 } else { 167 fd->rcv_rsplen = 0; 168 fd->transferred_length = 0; 169 fd->status = NVME_SC_INTERNAL; 170 } 171 spin_unlock_irqrestore(&priv->cmd_lock, flags); 172 173 fd->done(fd); 174 out: 175 qla2xxx_rel_qpair_sp(sp->qpair, sp); 176 } 177 178 static void qla_nvme_ls_unmap(struct srb *sp, struct nvmefc_ls_req *fd) 179 { 180 if (sp->flags & SRB_DMA_VALID) { 181 struct srb_iocb *nvme = &sp->u.iocb_cmd; 182 struct qla_hw_data *ha = sp->fcport->vha->hw; 183 184 dma_unmap_single(&ha->pdev->dev, nvme->u.nvme.cmd_dma, 185 fd->rqstlen, DMA_TO_DEVICE); 186 sp->flags &= ~SRB_DMA_VALID; 187 } 188 } 189 190 static void qla_nvme_release_ls_cmd_kref(struct kref *kref) 191 { 192 struct srb *sp = container_of(kref, struct srb, cmd_kref); 193 struct nvme_private *priv = (struct nvme_private *)sp->priv; 194 struct nvmefc_ls_req *fd; 195 unsigned long flags; 196 197 if (!priv) 198 goto out; 199 200 spin_lock_irqsave(&priv->cmd_lock, flags); 201 priv->sp = NULL; 202 sp->priv = NULL; 203 spin_unlock_irqrestore(&priv->cmd_lock, flags); 204 205 fd = priv->fd; 206 207 qla_nvme_ls_unmap(sp, fd); 208 fd->done(fd, priv->comp_status); 209 out: 210 qla2x00_rel_sp(sp); 211 } 212 213 static void qla_nvme_ls_complete(struct work_struct *work) 214 { 215 struct nvme_private *priv = 216 container_of(work, struct nvme_private, ls_work); 217 218 kref_put(&priv->sp->cmd_kref, qla_nvme_release_ls_cmd_kref); 219 } 220 221 static void qla_nvme_sp_ls_done(srb_t *sp, int res) 222 { 223 struct nvme_private *priv = sp->priv; 224 225 if (WARN_ON_ONCE(kref_read(&sp->cmd_kref) == 0)) 226 return; 227 228 if (res) 229 res = -EINVAL; 230 231 priv->comp_status = res; 232 INIT_WORK(&priv->ls_work, qla_nvme_ls_complete); 233 schedule_work(&priv->ls_work); 234 } 235 236 /* it assumed that QPair lock is held. */ 237 static void qla_nvme_sp_done(srb_t *sp, int res) 238 { 239 struct nvme_private *priv = sp->priv; 240 241 priv->comp_status = res; 242 kref_put(&sp->cmd_kref, qla_nvme_release_fcp_cmd_kref); 243 244 return; 245 } 246 247 static void qla_nvme_abort_work(struct work_struct *work) 248 { 249 struct nvme_private *priv = 250 container_of(work, struct nvme_private, abort_work); 251 srb_t *sp = priv->sp; 252 fc_port_t *fcport = sp->fcport; 253 struct qla_hw_data *ha = fcport->vha->hw; 254 int rval, abts_done_called = 1; 255 bool io_wait_for_abort_done; 256 uint32_t handle; 257 258 ql_dbg(ql_dbg_io, fcport->vha, 0xffff, 259 "%s called for sp=%p, hndl=%x on fcport=%p desc=%p deleted=%d\n", 260 __func__, sp, sp->handle, fcport, sp->u.iocb_cmd.u.nvme.desc, fcport->deleted); 261 262 if (!ha->flags.fw_started || fcport->deleted == QLA_SESS_DELETED) 263 goto out; 264 265 if (ha->flags.host_shutting_down) { 266 ql_log(ql_log_info, sp->fcport->vha, 0xffff, 267 "%s Calling done on sp: %p, type: 0x%x\n", 268 __func__, sp, sp->type); 269 sp->done(sp, 0); 270 goto out; 271 } 272 273 /* 274 * sp may not be valid after abort_command if return code is either 275 * SUCCESS or ERR_FROM_FW codes, so cache the value here. 276 */ 277 io_wait_for_abort_done = ql2xabts_wait_nvme && 278 QLA_ABTS_WAIT_ENABLED(sp); 279 handle = sp->handle; 280 281 rval = ha->isp_ops->abort_command(sp); 282 283 ql_dbg(ql_dbg_io, fcport->vha, 0x212b, 284 "%s: %s command for sp=%p, handle=%x on fcport=%p rval=%x\n", 285 __func__, (rval != QLA_SUCCESS) ? "Failed to abort" : "Aborted", 286 sp, handle, fcport, rval); 287 288 /* 289 * If async tmf is enabled, the abort callback is called only on 290 * return codes QLA_SUCCESS and QLA_ERR_FROM_FW. 291 */ 292 if (ql2xasynctmfenable && 293 rval != QLA_SUCCESS && rval != QLA_ERR_FROM_FW) 294 abts_done_called = 0; 295 296 /* 297 * Returned before decreasing kref so that I/O requests 298 * are waited until ABTS complete. This kref is decreased 299 * at qla24xx_abort_sp_done function. 300 */ 301 if (abts_done_called && io_wait_for_abort_done) 302 return; 303 out: 304 /* kref_get was done before work was schedule. */ 305 kref_put(&sp->cmd_kref, sp->put_fn); 306 } 307 308 static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport, 309 struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd) 310 { 311 struct nvme_private *priv = fd->private; 312 unsigned long flags; 313 314 spin_lock_irqsave(&priv->cmd_lock, flags); 315 if (!priv->sp) { 316 spin_unlock_irqrestore(&priv->cmd_lock, flags); 317 return; 318 } 319 320 if (!kref_get_unless_zero(&priv->sp->cmd_kref)) { 321 spin_unlock_irqrestore(&priv->cmd_lock, flags); 322 return; 323 } 324 spin_unlock_irqrestore(&priv->cmd_lock, flags); 325 326 INIT_WORK(&priv->abort_work, qla_nvme_abort_work); 327 schedule_work(&priv->abort_work); 328 } 329 330 static int qla_nvme_ls_req(struct nvme_fc_local_port *lport, 331 struct nvme_fc_remote_port *rport, struct nvmefc_ls_req *fd) 332 { 333 struct qla_nvme_rport *qla_rport = rport->private; 334 fc_port_t *fcport = qla_rport->fcport; 335 struct srb_iocb *nvme; 336 struct nvme_private *priv = fd->private; 337 struct scsi_qla_host *vha; 338 int rval = QLA_FUNCTION_FAILED; 339 struct qla_hw_data *ha; 340 srb_t *sp; 341 342 if (!fcport || fcport->deleted) 343 return rval; 344 345 vha = fcport->vha; 346 ha = vha->hw; 347 348 if (!ha->flags.fw_started) 349 return rval; 350 351 /* Alloc SRB structure */ 352 sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); 353 if (!sp) 354 return rval; 355 356 sp->type = SRB_NVME_LS; 357 sp->name = "nvme_ls"; 358 sp->done = qla_nvme_sp_ls_done; 359 sp->put_fn = qla_nvme_release_ls_cmd_kref; 360 sp->priv = priv; 361 priv->sp = sp; 362 kref_init(&sp->cmd_kref); 363 spin_lock_init(&priv->cmd_lock); 364 nvme = &sp->u.iocb_cmd; 365 priv->fd = fd; 366 nvme->u.nvme.desc = fd; 367 nvme->u.nvme.dir = 0; 368 nvme->u.nvme.dl = 0; 369 nvme->u.nvme.cmd_len = fd->rqstlen; 370 nvme->u.nvme.rsp_len = fd->rsplen; 371 nvme->u.nvme.rsp_dma = fd->rspdma; 372 nvme->u.nvme.timeout_sec = fd->timeout; 373 nvme->u.nvme.cmd_dma = dma_map_single(&ha->pdev->dev, fd->rqstaddr, 374 fd->rqstlen, DMA_TO_DEVICE); 375 dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma, 376 fd->rqstlen, DMA_TO_DEVICE); 377 378 sp->flags |= SRB_DMA_VALID; 379 380 rval = qla2x00_start_sp(sp); 381 if (rval != QLA_SUCCESS) { 382 ql_log(ql_log_warn, vha, 0x700e, 383 "qla2x00_start_sp failed = %d\n", rval); 384 wake_up(&sp->nvme_ls_waitq); 385 sp->priv = NULL; 386 priv->sp = NULL; 387 qla_nvme_ls_unmap(sp, fd); 388 qla2x00_rel_sp(sp); 389 return rval; 390 } 391 392 return rval; 393 } 394 395 static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport, 396 struct nvme_fc_remote_port *rport, void *hw_queue_handle, 397 struct nvmefc_fcp_req *fd) 398 { 399 struct nvme_private *priv = fd->private; 400 unsigned long flags; 401 402 spin_lock_irqsave(&priv->cmd_lock, flags); 403 if (!priv->sp) { 404 spin_unlock_irqrestore(&priv->cmd_lock, flags); 405 return; 406 } 407 if (!kref_get_unless_zero(&priv->sp->cmd_kref)) { 408 spin_unlock_irqrestore(&priv->cmd_lock, flags); 409 return; 410 } 411 spin_unlock_irqrestore(&priv->cmd_lock, flags); 412 413 INIT_WORK(&priv->abort_work, qla_nvme_abort_work); 414 schedule_work(&priv->abort_work); 415 } 416 417 static inline int qla2x00_start_nvme_mq(srb_t *sp) 418 { 419 unsigned long flags; 420 uint32_t *clr_ptr; 421 uint32_t handle; 422 struct cmd_nvme *cmd_pkt; 423 uint16_t cnt, i; 424 uint16_t req_cnt; 425 uint16_t tot_dsds; 426 uint16_t avail_dsds; 427 struct dsd64 *cur_dsd; 428 struct req_que *req = NULL; 429 struct rsp_que *rsp = NULL; 430 struct scsi_qla_host *vha = sp->fcport->vha; 431 struct qla_hw_data *ha = vha->hw; 432 struct qla_qpair *qpair = sp->qpair; 433 struct srb_iocb *nvme = &sp->u.iocb_cmd; 434 struct scatterlist *sgl, *sg; 435 struct nvmefc_fcp_req *fd = nvme->u.nvme.desc; 436 struct nvme_fc_cmd_iu *cmd = fd->cmdaddr; 437 uint32_t rval = QLA_SUCCESS; 438 439 /* Setup qpair pointers */ 440 req = qpair->req; 441 rsp = qpair->rsp; 442 tot_dsds = fd->sg_cnt; 443 444 /* Acquire qpair specific lock */ 445 spin_lock_irqsave(&qpair->qp_lock, flags); 446 447 handle = qla2xxx_get_next_handle(req); 448 if (handle == 0) { 449 rval = -EBUSY; 450 goto queuing_error; 451 } 452 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); 453 if (req->cnt < (req_cnt + 2)) { 454 if (IS_SHADOW_REG_CAPABLE(ha)) { 455 cnt = *req->out_ptr; 456 } else { 457 cnt = rd_reg_dword_relaxed(req->req_q_out); 458 if (qla2x00_check_reg16_for_disconnect(vha, cnt)) 459 goto queuing_error; 460 } 461 462 if (req->ring_index < cnt) 463 req->cnt = cnt - req->ring_index; 464 else 465 req->cnt = req->length - (req->ring_index - cnt); 466 467 if (req->cnt < (req_cnt + 2)){ 468 rval = -EBUSY; 469 goto queuing_error; 470 } 471 } 472 473 if (unlikely(!fd->sqid)) { 474 if (cmd->sqe.common.opcode == nvme_admin_async_event) { 475 nvme->u.nvme.aen_op = 1; 476 atomic_inc(&ha->nvme_active_aen_cnt); 477 } 478 } 479 480 /* Build command packet. */ 481 req->current_outstanding_cmd = handle; 482 req->outstanding_cmds[handle] = sp; 483 sp->handle = handle; 484 req->cnt -= req_cnt; 485 486 cmd_pkt = (struct cmd_nvme *)req->ring_ptr; 487 cmd_pkt->handle = make_handle(req->id, handle); 488 489 /* Zero out remaining portion of packet. */ 490 clr_ptr = (uint32_t *)cmd_pkt + 2; 491 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); 492 493 cmd_pkt->entry_status = 0; 494 495 /* Update entry type to indicate Command NVME IOCB */ 496 cmd_pkt->entry_type = COMMAND_NVME; 497 498 /* No data transfer how do we check buffer len == 0?? */ 499 if (fd->io_dir == NVMEFC_FCP_READ) { 500 cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA); 501 qpair->counters.input_bytes += fd->payload_length; 502 qpair->counters.input_requests++; 503 } else if (fd->io_dir == NVMEFC_FCP_WRITE) { 504 cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA); 505 if ((vha->flags.nvme_first_burst) && 506 (sp->fcport->nvme_prli_service_param & 507 NVME_PRLI_SP_FIRST_BURST)) { 508 if ((fd->payload_length <= 509 sp->fcport->nvme_first_burst_size) || 510 (sp->fcport->nvme_first_burst_size == 0)) 511 cmd_pkt->control_flags |= 512 cpu_to_le16(CF_NVME_FIRST_BURST_ENABLE); 513 } 514 qpair->counters.output_bytes += fd->payload_length; 515 qpair->counters.output_requests++; 516 } else if (fd->io_dir == 0) { 517 cmd_pkt->control_flags = 0; 518 } 519 520 if (sp->fcport->edif.enable && fd->io_dir != 0) 521 cmd_pkt->control_flags |= cpu_to_le16(CF_EN_EDIF); 522 523 /* Set BIT_13 of control flags for Async event */ 524 if (vha->flags.nvme2_enabled && 525 cmd->sqe.common.opcode == nvme_admin_async_event) { 526 cmd_pkt->control_flags |= cpu_to_le16(CF_ADMIN_ASYNC_EVENT); 527 } 528 529 /* Set NPORT-ID */ 530 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); 531 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; 532 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; 533 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; 534 cmd_pkt->vp_index = sp->fcport->vha->vp_idx; 535 536 /* NVME RSP IU */ 537 cmd_pkt->nvme_rsp_dsd_len = cpu_to_le16(fd->rsplen); 538 put_unaligned_le64(fd->rspdma, &cmd_pkt->nvme_rsp_dseg_address); 539 540 /* NVME CNMD IU */ 541 cmd_pkt->nvme_cmnd_dseg_len = cpu_to_le16(fd->cmdlen); 542 cmd_pkt->nvme_cmnd_dseg_address = cpu_to_le64(fd->cmddma); 543 544 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); 545 cmd_pkt->byte_count = cpu_to_le32(fd->payload_length); 546 547 /* One DSD is available in the Command Type NVME IOCB */ 548 avail_dsds = 1; 549 cur_dsd = &cmd_pkt->nvme_dsd; 550 sgl = fd->first_sgl; 551 552 /* Load data segments */ 553 for_each_sg(sgl, sg, tot_dsds, i) { 554 cont_a64_entry_t *cont_pkt; 555 556 /* Allocate additional continuation packets? */ 557 if (avail_dsds == 0) { 558 /* 559 * Five DSDs are available in the Continuation 560 * Type 1 IOCB. 561 */ 562 563 /* Adjust ring index */ 564 req->ring_index++; 565 if (req->ring_index == req->length) { 566 req->ring_index = 0; 567 req->ring_ptr = req->ring; 568 } else { 569 req->ring_ptr++; 570 } 571 cont_pkt = (cont_a64_entry_t *)req->ring_ptr; 572 put_unaligned_le32(CONTINUE_A64_TYPE, 573 &cont_pkt->entry_type); 574 575 cur_dsd = cont_pkt->dsd; 576 avail_dsds = ARRAY_SIZE(cont_pkt->dsd); 577 } 578 579 append_dsd64(&cur_dsd, sg); 580 avail_dsds--; 581 } 582 583 /* Set total entry count. */ 584 cmd_pkt->entry_count = (uint8_t)req_cnt; 585 wmb(); 586 587 /* Adjust ring index. */ 588 req->ring_index++; 589 if (req->ring_index == req->length) { 590 req->ring_index = 0; 591 req->ring_ptr = req->ring; 592 } else { 593 req->ring_ptr++; 594 } 595 596 /* ignore nvme async cmd due to long timeout */ 597 if (!nvme->u.nvme.aen_op) 598 sp->qpair->cmd_cnt++; 599 600 /* Set chip new ring index. */ 601 wrt_reg_dword(req->req_q_in, req->ring_index); 602 603 if (vha->flags.process_response_queue && 604 rsp->ring_ptr->signature != RESPONSE_PROCESSED) 605 qla24xx_process_response_queue(vha, rsp); 606 607 queuing_error: 608 spin_unlock_irqrestore(&qpair->qp_lock, flags); 609 610 return rval; 611 } 612 613 /* Post a command */ 614 static int qla_nvme_post_cmd(struct nvme_fc_local_port *lport, 615 struct nvme_fc_remote_port *rport, void *hw_queue_handle, 616 struct nvmefc_fcp_req *fd) 617 { 618 fc_port_t *fcport; 619 struct srb_iocb *nvme; 620 struct scsi_qla_host *vha; 621 int rval; 622 srb_t *sp; 623 struct qla_qpair *qpair = hw_queue_handle; 624 struct nvme_private *priv = fd->private; 625 struct qla_nvme_rport *qla_rport = rport->private; 626 627 if (!priv) { 628 /* nvme association has been torn down */ 629 return -ENODEV; 630 } 631 632 fcport = qla_rport->fcport; 633 634 if (unlikely(!qpair || !fcport || fcport->deleted)) 635 return -EBUSY; 636 637 if (!(fcport->nvme_flag & NVME_FLAG_REGISTERED)) 638 return -ENODEV; 639 640 vha = fcport->vha; 641 642 if (test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) 643 return -EBUSY; 644 645 /* 646 * If we know the dev is going away while the transport is still sending 647 * IO's return busy back to stall the IO Q. This happens when the 648 * link goes away and fw hasn't notified us yet, but IO's are being 649 * returned. If the dev comes back quickly we won't exhaust the IO 650 * retry count at the core. 651 */ 652 if (fcport->nvme_flag & NVME_FLAG_RESETTING) 653 return -EBUSY; 654 655 /* Alloc SRB structure */ 656 sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC); 657 if (!sp) 658 return -EBUSY; 659 660 init_waitqueue_head(&sp->nvme_ls_waitq); 661 kref_init(&sp->cmd_kref); 662 spin_lock_init(&priv->cmd_lock); 663 sp->priv = priv; 664 priv->sp = sp; 665 sp->type = SRB_NVME_CMD; 666 sp->name = "nvme_cmd"; 667 sp->done = qla_nvme_sp_done; 668 sp->put_fn = qla_nvme_release_fcp_cmd_kref; 669 sp->qpair = qpair; 670 sp->vha = vha; 671 sp->cmd_sp = sp; 672 nvme = &sp->u.iocb_cmd; 673 nvme->u.nvme.desc = fd; 674 675 rval = qla2x00_start_nvme_mq(sp); 676 if (rval != QLA_SUCCESS) { 677 ql_log(ql_log_warn, vha, 0x212d, 678 "qla2x00_start_nvme_mq failed = %d\n", rval); 679 wake_up(&sp->nvme_ls_waitq); 680 sp->priv = NULL; 681 priv->sp = NULL; 682 qla2xxx_rel_qpair_sp(sp->qpair, sp); 683 } 684 685 return rval; 686 } 687 688 static void qla_nvme_map_queues(struct nvme_fc_local_port *lport, 689 struct blk_mq_queue_map *map) 690 { 691 struct scsi_qla_host *vha = lport->private; 692 int rc; 693 694 rc = blk_mq_pci_map_queues(map, vha->hw->pdev, vha->irq_offset); 695 if (rc) 696 ql_log(ql_log_warn, vha, 0x21de, 697 "pci map queue failed 0x%x", rc); 698 } 699 700 static void qla_nvme_localport_delete(struct nvme_fc_local_port *lport) 701 { 702 struct scsi_qla_host *vha = lport->private; 703 704 ql_log(ql_log_info, vha, 0x210f, 705 "localport delete of %p completed.\n", vha->nvme_local_port); 706 vha->nvme_local_port = NULL; 707 complete(&vha->nvme_del_done); 708 } 709 710 static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport) 711 { 712 fc_port_t *fcport; 713 struct qla_nvme_rport *qla_rport = rport->private; 714 715 fcport = qla_rport->fcport; 716 fcport->nvme_remote_port = NULL; 717 fcport->nvme_flag &= ~NVME_FLAG_REGISTERED; 718 fcport->nvme_flag &= ~NVME_FLAG_DELETING; 719 ql_log(ql_log_info, fcport->vha, 0x2110, 720 "remoteport_delete of %p %8phN completed.\n", 721 fcport, fcport->port_name); 722 complete(&fcport->nvme_del_done); 723 } 724 725 static struct nvme_fc_port_template qla_nvme_fc_transport = { 726 .localport_delete = qla_nvme_localport_delete, 727 .remoteport_delete = qla_nvme_remoteport_delete, 728 .create_queue = qla_nvme_alloc_queue, 729 .delete_queue = NULL, 730 .ls_req = qla_nvme_ls_req, 731 .ls_abort = qla_nvme_ls_abort, 732 .fcp_io = qla_nvme_post_cmd, 733 .fcp_abort = qla_nvme_fcp_abort, 734 .map_queues = qla_nvme_map_queues, 735 .max_hw_queues = DEF_NVME_HW_QUEUES, 736 .max_sgl_segments = 1024, 737 .max_dif_sgl_segments = 64, 738 .dma_boundary = 0xFFFFFFFF, 739 .local_priv_sz = 8, 740 .remote_priv_sz = sizeof(struct qla_nvme_rport), 741 .lsrqst_priv_sz = sizeof(struct nvme_private), 742 .fcprqst_priv_sz = sizeof(struct nvme_private), 743 }; 744 745 void qla_nvme_unregister_remote_port(struct fc_port *fcport) 746 { 747 int ret; 748 749 if (!IS_ENABLED(CONFIG_NVME_FC)) 750 return; 751 752 ql_log(ql_log_warn, fcport->vha, 0x2112, 753 "%s: unregister remoteport on %p %8phN\n", 754 __func__, fcport, fcport->port_name); 755 756 if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags)) 757 nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0); 758 759 init_completion(&fcport->nvme_del_done); 760 ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port); 761 if (ret) 762 ql_log(ql_log_info, fcport->vha, 0x2114, 763 "%s: Failed to unregister nvme_remote_port (%d)\n", 764 __func__, ret); 765 wait_for_completion(&fcport->nvme_del_done); 766 } 767 768 void qla_nvme_delete(struct scsi_qla_host *vha) 769 { 770 int nv_ret; 771 772 if (!IS_ENABLED(CONFIG_NVME_FC)) 773 return; 774 775 if (vha->nvme_local_port) { 776 init_completion(&vha->nvme_del_done); 777 ql_log(ql_log_info, vha, 0x2116, 778 "unregister localport=%p\n", 779 vha->nvme_local_port); 780 nv_ret = nvme_fc_unregister_localport(vha->nvme_local_port); 781 if (nv_ret) 782 ql_log(ql_log_info, vha, 0x2115, 783 "Unregister of localport failed\n"); 784 else 785 wait_for_completion(&vha->nvme_del_done); 786 } 787 } 788 789 int qla_nvme_register_hba(struct scsi_qla_host *vha) 790 { 791 struct nvme_fc_port_template *tmpl; 792 struct qla_hw_data *ha; 793 struct nvme_fc_port_info pinfo; 794 int ret = -EINVAL; 795 796 if (!IS_ENABLED(CONFIG_NVME_FC)) 797 return ret; 798 799 ha = vha->hw; 800 tmpl = &qla_nvme_fc_transport; 801 802 if (ql2xnvme_queues < MIN_NVME_HW_QUEUES) { 803 ql_log(ql_log_warn, vha, 0xfffd, 804 "ql2xnvme_queues=%d is lower than minimum queues: %d. Resetting ql2xnvme_queues to:%d\n", 805 ql2xnvme_queues, MIN_NVME_HW_QUEUES, DEF_NVME_HW_QUEUES); 806 ql2xnvme_queues = DEF_NVME_HW_QUEUES; 807 } else if (ql2xnvme_queues > (ha->max_qpairs - 1)) { 808 ql_log(ql_log_warn, vha, 0xfffd, 809 "ql2xnvme_queues=%d is greater than available IRQs: %d. Resetting ql2xnvme_queues to: %d\n", 810 ql2xnvme_queues, (ha->max_qpairs - 1), 811 (ha->max_qpairs - 1)); 812 ql2xnvme_queues = ((ha->max_qpairs - 1)); 813 } 814 815 qla_nvme_fc_transport.max_hw_queues = 816 min((uint8_t)(ql2xnvme_queues), 817 (uint8_t)((ha->max_qpairs - 1) ? (ha->max_qpairs - 1) : 1)); 818 819 ql_log(ql_log_info, vha, 0xfffb, 820 "Number of NVME queues used for this port: %d\n", 821 qla_nvme_fc_transport.max_hw_queues); 822 823 pinfo.node_name = wwn_to_u64(vha->node_name); 824 pinfo.port_name = wwn_to_u64(vha->port_name); 825 pinfo.port_role = FC_PORT_ROLE_NVME_INITIATOR; 826 pinfo.port_id = vha->d_id.b24; 827 828 mutex_lock(&ha->vport_lock); 829 /* 830 * Check again for nvme_local_port to see if any other thread raced 831 * with this one and finished registration. 832 */ 833 if (!vha->nvme_local_port) { 834 ql_log(ql_log_info, vha, 0xffff, 835 "register_localport: host-traddr=nn-0x%llx:pn-0x%llx on portID:%x\n", 836 pinfo.node_name, pinfo.port_name, pinfo.port_id); 837 qla_nvme_fc_transport.dma_boundary = vha->host->dma_boundary; 838 839 ret = nvme_fc_register_localport(&pinfo, tmpl, 840 get_device(&ha->pdev->dev), 841 &vha->nvme_local_port); 842 mutex_unlock(&ha->vport_lock); 843 } else { 844 mutex_unlock(&ha->vport_lock); 845 return 0; 846 } 847 if (ret) { 848 ql_log(ql_log_warn, vha, 0xffff, 849 "register_localport failed: ret=%x\n", ret); 850 } else { 851 vha->nvme_local_port->private = vha; 852 } 853 854 return ret; 855 } 856 857 void qla_nvme_abort_set_option(struct abort_entry_24xx *abt, srb_t *orig_sp) 858 { 859 struct qla_hw_data *ha; 860 861 if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp))) 862 return; 863 864 ha = orig_sp->fcport->vha->hw; 865 866 WARN_ON_ONCE(abt->options & cpu_to_le16(BIT_0)); 867 /* Use Driver Specified Retry Count */ 868 abt->options |= cpu_to_le16(AOF_ABTS_RTY_CNT); 869 abt->drv.abts_rty_cnt = cpu_to_le16(2); 870 /* Use specified response timeout */ 871 abt->options |= cpu_to_le16(AOF_RSP_TIMEOUT); 872 /* set it to 2 * r_a_tov in secs */ 873 abt->drv.rsp_timeout = cpu_to_le16(2 * (ha->r_a_tov / 10)); 874 } 875 876 void qla_nvme_abort_process_comp_status(struct abort_entry_24xx *abt, srb_t *orig_sp) 877 { 878 u16 comp_status; 879 struct scsi_qla_host *vha; 880 881 if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp))) 882 return; 883 884 vha = orig_sp->fcport->vha; 885 886 comp_status = le16_to_cpu(abt->comp_status); 887 switch (comp_status) { 888 case CS_RESET: /* reset event aborted */ 889 case CS_ABORTED: /* IOCB was cleaned */ 890 /* N_Port handle is not currently logged in */ 891 case CS_TIMEOUT: 892 /* N_Port handle was logged out while waiting for ABTS to complete */ 893 case CS_PORT_UNAVAILABLE: 894 /* Firmware found that the port name changed */ 895 case CS_PORT_LOGGED_OUT: 896 /* BA_RJT was received for the ABTS */ 897 case CS_PORT_CONFIG_CHG: 898 ql_dbg(ql_dbg_async, vha, 0xf09d, 899 "Abort I/O IOCB completed with error, comp_status=%x\n", 900 comp_status); 901 break; 902 903 /* BA_RJT was received for the ABTS */ 904 case CS_REJECT_RECEIVED: 905 ql_dbg(ql_dbg_async, vha, 0xf09e, 906 "BA_RJT was received for the ABTS rjt_vendorUnique = %u", 907 abt->fw.ba_rjt_vendorUnique); 908 ql_dbg(ql_dbg_async + ql_dbg_mbx, vha, 0xf09e, 909 "ba_rjt_reasonCodeExpl = %u, ba_rjt_reasonCode = %u\n", 910 abt->fw.ba_rjt_reasonCodeExpl, abt->fw.ba_rjt_reasonCode); 911 break; 912 913 case CS_COMPLETE: 914 ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0xf09f, 915 "IOCB request is completed successfully comp_status=%x\n", 916 comp_status); 917 break; 918 919 case CS_IOCB_ERROR: 920 ql_dbg(ql_dbg_async, vha, 0xf0a0, 921 "IOCB request is failed, comp_status=%x\n", comp_status); 922 break; 923 924 default: 925 ql_dbg(ql_dbg_async, vha, 0xf0a1, 926 "Invalid Abort IO IOCB Completion Status %x\n", 927 comp_status); 928 break; 929 } 930 } 931 932 inline void qla_wait_nvme_release_cmd_kref(srb_t *orig_sp) 933 { 934 if (!(ql2xabts_wait_nvme && QLA_ABTS_WAIT_ENABLED(orig_sp))) 935 return; 936 kref_put(&orig_sp->cmd_kref, orig_sp->put_fn); 937 } 938