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