1 // SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause 2 /* 3 * Copyright 2018-2025 Amazon.com, Inc. or its affiliates. All rights reserved. 4 */ 5 6 #include <linux/module.h> 7 #include <linux/pci.h> 8 #include <linux/utsname.h> 9 #include <linux/version.h> 10 11 #include <rdma/ib_user_verbs.h> 12 #include <rdma/uverbs_ioctl.h> 13 14 #include "efa.h" 15 16 #define PCI_DEV_ID_EFA0_VF 0xefa0 17 #define PCI_DEV_ID_EFA1_VF 0xefa1 18 #define PCI_DEV_ID_EFA2_VF 0xefa2 19 #define PCI_DEV_ID_EFA3_VF 0xefa3 20 21 static const struct pci_device_id efa_pci_tbl[] = { 22 { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA0_VF) }, 23 { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA1_VF) }, 24 { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA2_VF) }, 25 { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA3_VF) }, 26 { } 27 }; 28 29 MODULE_AUTHOR("Amazon.com, Inc. or its affiliates"); 30 MODULE_LICENSE("Dual BSD/GPL"); 31 MODULE_DESCRIPTION(DEVICE_NAME); 32 MODULE_DEVICE_TABLE(pci, efa_pci_tbl); 33 34 #define EFA_REG_BAR 0 35 #define EFA_MEM_BAR 2 36 #define EFA_BASE_BAR_MASK (BIT(EFA_REG_BAR) | BIT(EFA_MEM_BAR)) 37 38 #define EFA_AENQ_ENABLED_GROUPS \ 39 (BIT(EFA_ADMIN_FATAL_ERROR) | BIT(EFA_ADMIN_WARNING) | \ 40 BIT(EFA_ADMIN_NOTIFICATION) | BIT(EFA_ADMIN_KEEP_ALIVE)) 41 42 extern const struct uapi_definition efa_uapi_defs[]; 43 44 /* This handler will called for unknown event group or unimplemented handlers */ 45 static void unimplemented_aenq_handler(void *data, 46 struct efa_admin_aenq_entry *aenq_e) 47 { 48 struct efa_dev *dev = (struct efa_dev *)data; 49 50 ibdev_err(&dev->ibdev, 51 "Unknown event was received or event with unimplemented handler\n"); 52 } 53 54 static void efa_keep_alive(void *data, struct efa_admin_aenq_entry *aenq_e) 55 { 56 struct efa_dev *dev = (struct efa_dev *)data; 57 58 atomic64_inc(&dev->stats.keep_alive_rcvd); 59 } 60 61 static struct efa_aenq_handlers aenq_handlers = { 62 .handlers = { 63 [EFA_ADMIN_KEEP_ALIVE] = efa_keep_alive, 64 }, 65 .unimplemented_handler = unimplemented_aenq_handler 66 }; 67 68 static void efa_release_bars(struct efa_dev *dev, int bars_mask) 69 { 70 struct pci_dev *pdev = dev->pdev; 71 int release_bars; 72 73 release_bars = pci_select_bars(pdev, IORESOURCE_MEM) & bars_mask; 74 pci_release_selected_regions(pdev, release_bars); 75 } 76 77 static void efa_process_comp_eqe(struct efa_dev *dev, struct efa_admin_eqe *eqe) 78 { 79 u16 cqn = eqe->u.comp_event.cqn; 80 struct efa_cq *cq; 81 82 /* Safe to load as we're in irq and removal calls synchronize_irq() */ 83 cq = xa_load(&dev->cqs_xa, cqn); 84 if (unlikely(!cq)) { 85 ibdev_err_ratelimited(&dev->ibdev, 86 "Completion event on non-existent CQ[%u]", 87 cqn); 88 return; 89 } 90 91 cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); 92 } 93 94 static void efa_process_eqe(struct efa_com_eq *eeq, struct efa_admin_eqe *eqe) 95 { 96 struct efa_dev *dev = container_of(eeq->edev, struct efa_dev, edev); 97 98 if (likely(EFA_GET(&eqe->common, EFA_ADMIN_EQE_EVENT_TYPE) == 99 EFA_ADMIN_EQE_EVENT_TYPE_COMPLETION)) 100 efa_process_comp_eqe(dev, eqe); 101 else 102 ibdev_err_ratelimited(&dev->ibdev, 103 "Unknown event type received %lu", 104 EFA_GET(&eqe->common, 105 EFA_ADMIN_EQE_EVENT_TYPE)); 106 } 107 108 static irqreturn_t efa_intr_msix_comp(int irq, void *data) 109 { 110 struct efa_eq *eq = data; 111 struct efa_com_dev *edev = eq->eeq.edev; 112 113 efa_com_eq_comp_intr_handler(edev, &eq->eeq); 114 115 return IRQ_HANDLED; 116 } 117 118 static irqreturn_t efa_intr_msix_mgmnt(int irq, void *data) 119 { 120 struct efa_dev *dev = data; 121 122 efa_com_admin_q_comp_intr_handler(&dev->edev); 123 efa_com_aenq_intr_handler(&dev->edev, data); 124 125 return IRQ_HANDLED; 126 } 127 128 static int efa_request_irq(struct efa_dev *dev, struct efa_irq *irq) 129 { 130 int err; 131 132 err = request_irq(irq->irqn, irq->handler, 0, irq->name, irq->data); 133 if (err) { 134 dev_err(&dev->pdev->dev, "Failed to request irq %s (%d)\n", 135 irq->name, err); 136 return err; 137 } 138 139 irq_set_affinity_hint(irq->irqn, &irq->affinity_hint_mask); 140 141 return 0; 142 } 143 144 static void efa_setup_comp_irq(struct efa_dev *dev, struct efa_eq *eq, u32 vector) 145 { 146 u32 cpu; 147 148 cpu = vector - EFA_COMP_EQS_VEC_BASE; 149 snprintf(eq->irq.name, EFA_IRQNAME_SIZE, "efa-comp%d@pci:%s", cpu, 150 pci_name(dev->pdev)); 151 eq->irq.handler = efa_intr_msix_comp; 152 eq->irq.data = eq; 153 eq->irq.vector = vector; 154 eq->irq.irqn = pci_irq_vector(dev->pdev, vector); 155 cpumask_set_cpu(cpu, &eq->irq.affinity_hint_mask); 156 } 157 158 static void efa_free_irq(struct efa_dev *dev, struct efa_irq *irq) 159 { 160 irq_set_affinity_hint(irq->irqn, NULL); 161 free_irq(irq->irqn, irq->data); 162 } 163 164 static void efa_setup_mgmnt_irq(struct efa_dev *dev) 165 { 166 u32 cpu; 167 168 snprintf(dev->admin_irq.name, EFA_IRQNAME_SIZE, 169 "efa-mgmnt@pci:%s", pci_name(dev->pdev)); 170 dev->admin_irq.handler = efa_intr_msix_mgmnt; 171 dev->admin_irq.data = dev; 172 dev->admin_irq.vector = dev->admin_msix_vector_idx; 173 dev->admin_irq.irqn = pci_irq_vector(dev->pdev, 174 dev->admin_msix_vector_idx); 175 cpu = cpumask_first(cpu_online_mask); 176 cpumask_set_cpu(cpu, 177 &dev->admin_irq.affinity_hint_mask); 178 dev_info(&dev->pdev->dev, "Setup irq:%d name:%s\n", 179 dev->admin_irq.irqn, 180 dev->admin_irq.name); 181 } 182 183 static int efa_set_mgmnt_irq(struct efa_dev *dev) 184 { 185 efa_setup_mgmnt_irq(dev); 186 187 return efa_request_irq(dev, &dev->admin_irq); 188 } 189 190 static int efa_request_doorbell_bar(struct efa_dev *dev) 191 { 192 u8 db_bar_idx = dev->dev_attr.db_bar; 193 struct pci_dev *pdev = dev->pdev; 194 int pci_mem_bars; 195 int db_bar; 196 int err; 197 198 db_bar = BIT(db_bar_idx); 199 if (!(db_bar & EFA_BASE_BAR_MASK)) { 200 pci_mem_bars = pci_select_bars(pdev, IORESOURCE_MEM); 201 if (db_bar & ~pci_mem_bars) { 202 dev_err(&pdev->dev, 203 "Doorbells BAR unavailable. Requested %#x, available %#x\n", 204 db_bar, pci_mem_bars); 205 return -ENODEV; 206 } 207 208 err = pci_request_selected_regions(pdev, db_bar, DRV_MODULE_NAME); 209 if (err) { 210 dev_err(&pdev->dev, 211 "pci_request_selected_regions for bar %d failed %d\n", 212 db_bar_idx, err); 213 return err; 214 } 215 } 216 217 dev->db_bar_addr = pci_resource_start(dev->pdev, db_bar_idx); 218 dev->db_bar_len = pci_resource_len(dev->pdev, db_bar_idx); 219 220 return 0; 221 } 222 223 static void efa_release_doorbell_bar(struct efa_dev *dev) 224 { 225 if (!(BIT(dev->dev_attr.db_bar) & EFA_BASE_BAR_MASK)) 226 efa_release_bars(dev, BIT(dev->dev_attr.db_bar)); 227 } 228 229 static void efa_update_hw_hints(struct efa_dev *dev, 230 struct efa_com_get_hw_hints_result *hw_hints) 231 { 232 struct efa_com_dev *edev = &dev->edev; 233 234 if (hw_hints->mmio_read_timeout) 235 edev->mmio_read.mmio_read_timeout = 236 hw_hints->mmio_read_timeout * 1000; 237 238 if (hw_hints->poll_interval) 239 edev->aq.poll_interval = hw_hints->poll_interval; 240 241 if (hw_hints->admin_completion_timeout) 242 edev->aq.completion_timeout = 243 hw_hints->admin_completion_timeout; 244 } 245 246 static void efa_stats_init(struct efa_dev *dev) 247 { 248 atomic64_t *s = (atomic64_t *)&dev->stats; 249 int i; 250 251 for (i = 0; i < sizeof(dev->stats) / sizeof(*s); i++, s++) 252 atomic64_set(s, 0); 253 } 254 255 static void efa_set_host_info(struct efa_dev *dev) 256 { 257 struct efa_admin_set_feature_resp resp = {}; 258 struct efa_admin_set_feature_cmd cmd = {}; 259 struct efa_admin_host_info *hinf; 260 u32 bufsz = sizeof(*hinf); 261 dma_addr_t hinf_dma; 262 263 if (!efa_com_check_supported_feature_id(&dev->edev, 264 EFA_ADMIN_HOST_INFO)) 265 return; 266 267 /* Failures in host info set shall not disturb probe */ 268 hinf = dma_alloc_coherent(&dev->pdev->dev, bufsz, &hinf_dma, 269 GFP_KERNEL); 270 if (!hinf) 271 return; 272 273 strscpy(hinf->os_dist_str, utsname()->release, 274 sizeof(hinf->os_dist_str)); 275 hinf->os_type = EFA_ADMIN_OS_LINUX; 276 strscpy(hinf->kernel_ver_str, utsname()->version, 277 sizeof(hinf->kernel_ver_str)); 278 hinf->kernel_ver = LINUX_VERSION_CODE; 279 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MAJOR, 0); 280 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MINOR, 0); 281 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_SUB_MINOR, 0); 282 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MODULE_TYPE, 0); 283 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_BUS, dev->pdev->bus->number); 284 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_DEVICE, 285 PCI_SLOT(dev->pdev->devfn)); 286 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_FUNCTION, 287 PCI_FUNC(dev->pdev->devfn)); 288 EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MAJOR, 289 EFA_COMMON_SPEC_VERSION_MAJOR); 290 EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MINOR, 291 EFA_COMMON_SPEC_VERSION_MINOR); 292 EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_INTREE, 1); 293 EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_GDR, 0); 294 295 efa_com_set_feature_ex(&dev->edev, &resp, &cmd, EFA_ADMIN_HOST_INFO, 296 hinf_dma, bufsz); 297 298 dma_free_coherent(&dev->pdev->dev, bufsz, hinf, hinf_dma); 299 } 300 301 static void efa_destroy_eq(struct efa_dev *dev, struct efa_eq *eq) 302 { 303 efa_com_eq_destroy(&dev->edev, &eq->eeq); 304 efa_free_irq(dev, &eq->irq); 305 } 306 307 static int efa_create_eq(struct efa_dev *dev, struct efa_eq *eq, u32 msix_vec) 308 { 309 int err; 310 311 efa_setup_comp_irq(dev, eq, msix_vec); 312 err = efa_request_irq(dev, &eq->irq); 313 if (err) 314 return err; 315 316 err = efa_com_eq_init(&dev->edev, &eq->eeq, efa_process_eqe, 317 dev->dev_attr.max_eq_depth, msix_vec); 318 if (err) 319 goto err_free_comp_irq; 320 321 return 0; 322 323 err_free_comp_irq: 324 efa_free_irq(dev, &eq->irq); 325 return err; 326 } 327 328 static int efa_create_eqs(struct efa_dev *dev) 329 { 330 u32 neqs = dev->dev_attr.max_eq; 331 int err, i; 332 333 neqs = min_t(u32, neqs, dev->num_irq_vectors - EFA_COMP_EQS_VEC_BASE); 334 dev->neqs = neqs; 335 dev->eqs = kcalloc(neqs, sizeof(*dev->eqs), GFP_KERNEL); 336 if (!dev->eqs) 337 return -ENOMEM; 338 339 for (i = 0; i < neqs; i++) { 340 err = efa_create_eq(dev, &dev->eqs[i], i + EFA_COMP_EQS_VEC_BASE); 341 if (err) 342 goto err_destroy_eqs; 343 } 344 345 return 0; 346 347 err_destroy_eqs: 348 for (i--; i >= 0; i--) 349 efa_destroy_eq(dev, &dev->eqs[i]); 350 kfree(dev->eqs); 351 352 return err; 353 } 354 355 static void efa_destroy_eqs(struct efa_dev *dev) 356 { 357 int i; 358 359 for (i = 0; i < dev->neqs; i++) 360 efa_destroy_eq(dev, &dev->eqs[i]); 361 362 kfree(dev->eqs); 363 } 364 365 static const struct ib_device_ops efa_dev_ops = { 366 .owner = THIS_MODULE, 367 .driver_id = RDMA_DRIVER_EFA, 368 .uverbs_abi_ver = EFA_UVERBS_ABI_VERSION, 369 370 .alloc_hw_port_stats = efa_alloc_hw_port_stats, 371 .alloc_hw_device_stats = efa_alloc_hw_device_stats, 372 .alloc_pd = efa_alloc_pd, 373 .alloc_ucontext = efa_alloc_ucontext, 374 .create_cq = efa_create_cq, 375 .create_qp = efa_create_qp, 376 .create_user_ah = efa_create_ah, 377 .dealloc_pd = efa_dealloc_pd, 378 .dealloc_ucontext = efa_dealloc_ucontext, 379 .dereg_mr = efa_dereg_mr, 380 .destroy_ah = efa_destroy_ah, 381 .destroy_cq = efa_destroy_cq, 382 .destroy_qp = efa_destroy_qp, 383 .get_hw_stats = efa_get_hw_stats, 384 .get_link_layer = efa_port_link_layer, 385 .get_port_immutable = efa_get_port_immutable, 386 .mmap = efa_mmap, 387 .mmap_free = efa_mmap_free, 388 .modify_qp = efa_modify_qp, 389 .query_device = efa_query_device, 390 .query_gid = efa_query_gid, 391 .query_pkey = efa_query_pkey, 392 .query_port = efa_query_port, 393 .query_qp = efa_query_qp, 394 .reg_user_mr = efa_reg_mr, 395 .reg_user_mr_dmabuf = efa_reg_user_mr_dmabuf, 396 397 INIT_RDMA_OBJ_SIZE(ib_ah, efa_ah, ibah), 398 INIT_RDMA_OBJ_SIZE(ib_cq, efa_cq, ibcq), 399 INIT_RDMA_OBJ_SIZE(ib_pd, efa_pd, ibpd), 400 INIT_RDMA_OBJ_SIZE(ib_qp, efa_qp, ibqp), 401 INIT_RDMA_OBJ_SIZE(ib_ucontext, efa_ucontext, ibucontext), 402 }; 403 404 static int efa_ib_device_add(struct efa_dev *dev) 405 { 406 struct efa_com_get_hw_hints_result hw_hints; 407 struct pci_dev *pdev = dev->pdev; 408 int err; 409 410 efa_stats_init(dev); 411 412 err = efa_com_get_device_attr(&dev->edev, &dev->dev_attr); 413 if (err) 414 return err; 415 416 dev_dbg(&dev->pdev->dev, "Doorbells bar (%d)\n", dev->dev_attr.db_bar); 417 err = efa_request_doorbell_bar(dev); 418 if (err) 419 return err; 420 421 err = efa_com_get_hw_hints(&dev->edev, &hw_hints); 422 if (err) 423 goto err_release_doorbell_bar; 424 425 efa_update_hw_hints(dev, &hw_hints); 426 427 /* Try to enable all the available aenq groups */ 428 err = efa_com_set_aenq_config(&dev->edev, EFA_AENQ_ENABLED_GROUPS); 429 if (err) 430 goto err_release_doorbell_bar; 431 432 err = efa_create_eqs(dev); 433 if (err) 434 goto err_release_doorbell_bar; 435 436 efa_set_host_info(dev); 437 438 dev->ibdev.node_type = RDMA_NODE_UNSPECIFIED; 439 dev->ibdev.node_guid = dev->dev_attr.guid; 440 dev->ibdev.phys_port_cnt = 1; 441 dev->ibdev.num_comp_vectors = dev->neqs ?: 1; 442 dev->ibdev.dev.parent = &pdev->dev; 443 444 ib_set_device_ops(&dev->ibdev, &efa_dev_ops); 445 446 dev->ibdev.driver_def = efa_uapi_defs; 447 448 err = ib_register_device(&dev->ibdev, "efa_%d", &pdev->dev); 449 if (err) 450 goto err_destroy_eqs; 451 452 ibdev_info(&dev->ibdev, "IB device registered\n"); 453 454 return 0; 455 456 err_destroy_eqs: 457 efa_destroy_eqs(dev); 458 err_release_doorbell_bar: 459 efa_release_doorbell_bar(dev); 460 return err; 461 } 462 463 static void efa_ib_device_remove(struct efa_dev *dev) 464 { 465 ibdev_info(&dev->ibdev, "Unregister ib device\n"); 466 ib_unregister_device(&dev->ibdev); 467 efa_destroy_eqs(dev); 468 efa_release_doorbell_bar(dev); 469 } 470 471 static void efa_disable_msix(struct efa_dev *dev) 472 { 473 pci_free_irq_vectors(dev->pdev); 474 } 475 476 static int efa_enable_msix(struct efa_dev *dev) 477 { 478 int max_vecs, num_vecs; 479 480 /* 481 * Reserve the max msix vectors we might need, one vector is reserved 482 * for admin. 483 */ 484 max_vecs = min_t(int, pci_msix_vec_count(dev->pdev), 485 num_online_cpus() + 1); 486 dev_dbg(&dev->pdev->dev, "Trying to enable MSI-X, vectors %d\n", 487 max_vecs); 488 489 dev->admin_msix_vector_idx = EFA_MGMNT_MSIX_VEC_IDX; 490 num_vecs = pci_alloc_irq_vectors(dev->pdev, 1, 491 max_vecs, PCI_IRQ_MSIX); 492 493 if (num_vecs < 0) { 494 dev_err(&dev->pdev->dev, "Failed to enable MSI-X. error %d\n", 495 num_vecs); 496 return -ENOSPC; 497 } 498 499 dev_dbg(&dev->pdev->dev, "Allocated %d MSI-X vectors\n", num_vecs); 500 501 dev->num_irq_vectors = num_vecs; 502 503 return 0; 504 } 505 506 static int efa_device_init(struct efa_com_dev *edev, struct pci_dev *pdev) 507 { 508 int dma_width; 509 int err; 510 511 err = efa_com_dev_reset(edev, EFA_REGS_RESET_NORMAL); 512 if (err) 513 return err; 514 515 err = efa_com_validate_version(edev); 516 if (err) 517 return err; 518 519 dma_width = efa_com_get_dma_width(edev); 520 if (dma_width < 0) { 521 err = dma_width; 522 return err; 523 } 524 525 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(dma_width)); 526 if (err) { 527 dev_err(&pdev->dev, "dma_set_mask_and_coherent failed %d\n", err); 528 return err; 529 } 530 531 dma_set_max_seg_size(&pdev->dev, UINT_MAX); 532 return 0; 533 } 534 535 static struct efa_dev *efa_probe_device(struct pci_dev *pdev) 536 { 537 struct efa_com_dev *edev; 538 struct efa_dev *dev; 539 int pci_mem_bars; 540 int err; 541 542 err = pci_enable_device_mem(pdev); 543 if (err) { 544 dev_err(&pdev->dev, "pci_enable_device_mem() failed!\n"); 545 return ERR_PTR(err); 546 } 547 548 pci_set_master(pdev); 549 550 dev = ib_alloc_device(efa_dev, ibdev); 551 if (!dev) { 552 dev_err(&pdev->dev, "Device alloc failed\n"); 553 err = -ENOMEM; 554 goto err_disable_device; 555 } 556 557 pci_set_drvdata(pdev, dev); 558 edev = &dev->edev; 559 edev->efa_dev = dev; 560 edev->dmadev = &pdev->dev; 561 dev->pdev = pdev; 562 xa_init(&dev->cqs_xa); 563 564 pci_mem_bars = pci_select_bars(pdev, IORESOURCE_MEM); 565 if (EFA_BASE_BAR_MASK & ~pci_mem_bars) { 566 dev_err(&pdev->dev, "BARs unavailable. Requested %#x, available %#x\n", 567 (int)EFA_BASE_BAR_MASK, pci_mem_bars); 568 err = -ENODEV; 569 goto err_ibdev_destroy; 570 } 571 err = pci_request_selected_regions(pdev, EFA_BASE_BAR_MASK, DRV_MODULE_NAME); 572 if (err) { 573 dev_err(&pdev->dev, "pci_request_selected_regions failed %d\n", 574 err); 575 goto err_ibdev_destroy; 576 } 577 578 dev->reg_bar_addr = pci_resource_start(pdev, EFA_REG_BAR); 579 dev->reg_bar_len = pci_resource_len(pdev, EFA_REG_BAR); 580 dev->mem_bar_addr = pci_resource_start(pdev, EFA_MEM_BAR); 581 dev->mem_bar_len = pci_resource_len(pdev, EFA_MEM_BAR); 582 583 edev->reg_bar = devm_ioremap(&pdev->dev, 584 dev->reg_bar_addr, 585 dev->reg_bar_len); 586 if (!edev->reg_bar) { 587 dev_err(&pdev->dev, "Failed to remap register bar\n"); 588 err = -EFAULT; 589 goto err_release_bars; 590 } 591 592 err = efa_com_mmio_reg_read_init(edev); 593 if (err) { 594 dev_err(&pdev->dev, "Failed to init readless MMIO\n"); 595 goto err_iounmap; 596 } 597 598 err = efa_device_init(edev, pdev); 599 if (err) { 600 dev_err(&pdev->dev, "EFA device init failed\n"); 601 if (err == -ETIME) 602 err = -EPROBE_DEFER; 603 goto err_reg_read_destroy; 604 } 605 606 err = efa_enable_msix(dev); 607 if (err) 608 goto err_reg_read_destroy; 609 610 edev->aq.msix_vector_idx = dev->admin_msix_vector_idx; 611 edev->aenq.msix_vector_idx = dev->admin_msix_vector_idx; 612 613 err = efa_set_mgmnt_irq(dev); 614 if (err) 615 goto err_disable_msix; 616 617 err = efa_com_admin_init(edev, &aenq_handlers); 618 if (err) 619 goto err_free_mgmnt_irq; 620 621 return dev; 622 623 err_free_mgmnt_irq: 624 efa_free_irq(dev, &dev->admin_irq); 625 err_disable_msix: 626 efa_disable_msix(dev); 627 err_reg_read_destroy: 628 efa_com_mmio_reg_read_destroy(edev); 629 err_iounmap: 630 devm_iounmap(&pdev->dev, edev->reg_bar); 631 err_release_bars: 632 efa_release_bars(dev, EFA_BASE_BAR_MASK); 633 err_ibdev_destroy: 634 ib_dealloc_device(&dev->ibdev); 635 err_disable_device: 636 pci_disable_device(pdev); 637 return ERR_PTR(err); 638 } 639 640 static void efa_remove_device(struct pci_dev *pdev, 641 enum efa_regs_reset_reason_types reset_reason) 642 { 643 struct efa_dev *dev = pci_get_drvdata(pdev); 644 struct efa_com_dev *edev; 645 646 edev = &dev->edev; 647 efa_com_dev_reset(edev, reset_reason); 648 efa_com_admin_destroy(edev); 649 efa_free_irq(dev, &dev->admin_irq); 650 efa_disable_msix(dev); 651 efa_com_mmio_reg_read_destroy(edev); 652 devm_iounmap(&pdev->dev, edev->reg_bar); 653 efa_release_bars(dev, EFA_BASE_BAR_MASK); 654 xa_destroy(&dev->cqs_xa); 655 ib_dealloc_device(&dev->ibdev); 656 pci_disable_device(pdev); 657 } 658 659 static int efa_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 660 { 661 struct efa_dev *dev; 662 int err; 663 664 dev = efa_probe_device(pdev); 665 if (IS_ERR(dev)) 666 return PTR_ERR(dev); 667 668 err = efa_ib_device_add(dev); 669 if (err) 670 goto err_remove_device; 671 672 return 0; 673 674 err_remove_device: 675 efa_remove_device(pdev, EFA_REGS_RESET_INIT_ERR); 676 return err; 677 } 678 679 static void efa_remove(struct pci_dev *pdev) 680 { 681 struct efa_dev *dev = pci_get_drvdata(pdev); 682 683 efa_ib_device_remove(dev); 684 efa_remove_device(pdev, EFA_REGS_RESET_NORMAL); 685 } 686 687 static void efa_shutdown(struct pci_dev *pdev) 688 { 689 struct efa_dev *dev = pci_get_drvdata(pdev); 690 691 efa_destroy_eqs(dev); 692 efa_com_dev_reset(&dev->edev, EFA_REGS_RESET_SHUTDOWN); 693 efa_free_irq(dev, &dev->admin_irq); 694 efa_disable_msix(dev); 695 } 696 697 static struct pci_driver efa_pci_driver = { 698 .name = DRV_MODULE_NAME, 699 .id_table = efa_pci_tbl, 700 .probe = efa_probe, 701 .remove = efa_remove, 702 .shutdown = efa_shutdown, 703 }; 704 705 module_pci_driver(efa_pci_driver); 706