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