1 // SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause 2 /* 3 * Copyright 2018-2024 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 20 static const struct pci_device_id efa_pci_tbl[] = { 21 { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA0_VF) }, 22 { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA1_VF) }, 23 { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA2_VF) }, 24 { } 25 }; 26 27 MODULE_AUTHOR("Amazon.com, Inc. or its affiliates"); 28 MODULE_LICENSE("Dual BSD/GPL"); 29 MODULE_DESCRIPTION(DEVICE_NAME); 30 MODULE_DEVICE_TABLE(pci, efa_pci_tbl); 31 32 #define EFA_REG_BAR 0 33 #define EFA_MEM_BAR 2 34 #define EFA_BASE_BAR_MASK (BIT(EFA_REG_BAR) | BIT(EFA_MEM_BAR)) 35 36 #define EFA_AENQ_ENABLED_GROUPS \ 37 (BIT(EFA_ADMIN_FATAL_ERROR) | BIT(EFA_ADMIN_WARNING) | \ 38 BIT(EFA_ADMIN_NOTIFICATION) | BIT(EFA_ADMIN_KEEP_ALIVE)) 39 40 extern const struct uapi_definition efa_uapi_defs[]; 41 42 /* This handler will called for unknown event group or unimplemented handlers */ 43 static void unimplemented_aenq_handler(void *data, 44 struct efa_admin_aenq_entry *aenq_e) 45 { 46 struct efa_dev *dev = (struct efa_dev *)data; 47 48 ibdev_err(&dev->ibdev, 49 "Unknown event was received or event with unimplemented handler\n"); 50 } 51 52 static void efa_keep_alive(void *data, struct efa_admin_aenq_entry *aenq_e) 53 { 54 struct efa_dev *dev = (struct efa_dev *)data; 55 56 atomic64_inc(&dev->stats.keep_alive_rcvd); 57 } 58 59 static struct efa_aenq_handlers aenq_handlers = { 60 .handlers = { 61 [EFA_ADMIN_KEEP_ALIVE] = efa_keep_alive, 62 }, 63 .unimplemented_handler = unimplemented_aenq_handler 64 }; 65 66 static void efa_release_bars(struct efa_dev *dev, int bars_mask) 67 { 68 struct pci_dev *pdev = dev->pdev; 69 int release_bars; 70 71 release_bars = pci_select_bars(pdev, IORESOURCE_MEM) & bars_mask; 72 pci_release_selected_regions(pdev, release_bars); 73 } 74 75 static void efa_process_comp_eqe(struct efa_dev *dev, struct efa_admin_eqe *eqe) 76 { 77 u16 cqn = eqe->u.comp_event.cqn; 78 struct efa_cq *cq; 79 80 /* Safe to load as we're in irq and removal calls synchronize_irq() */ 81 cq = xa_load(&dev->cqs_xa, cqn); 82 if (unlikely(!cq)) { 83 ibdev_err_ratelimited(&dev->ibdev, 84 "Completion event on non-existent CQ[%u]", 85 cqn); 86 return; 87 } 88 89 cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); 90 } 91 92 static void efa_process_eqe(struct efa_com_eq *eeq, struct efa_admin_eqe *eqe) 93 { 94 struct efa_dev *dev = container_of(eeq->edev, struct efa_dev, edev); 95 96 if (likely(EFA_GET(&eqe->common, EFA_ADMIN_EQE_EVENT_TYPE) == 97 EFA_ADMIN_EQE_EVENT_TYPE_COMPLETION)) 98 efa_process_comp_eqe(dev, eqe); 99 else 100 ibdev_err_ratelimited(&dev->ibdev, 101 "Unknown event type received %lu", 102 EFA_GET(&eqe->common, 103 EFA_ADMIN_EQE_EVENT_TYPE)); 104 } 105 106 static irqreturn_t efa_intr_msix_comp(int irq, void *data) 107 { 108 struct efa_eq *eq = data; 109 struct efa_com_dev *edev = eq->eeq.edev; 110 111 efa_com_eq_comp_intr_handler(edev, &eq->eeq); 112 113 return IRQ_HANDLED; 114 } 115 116 static irqreturn_t efa_intr_msix_mgmnt(int irq, void *data) 117 { 118 struct efa_dev *dev = data; 119 120 efa_com_admin_q_comp_intr_handler(&dev->edev); 121 efa_com_aenq_intr_handler(&dev->edev, data); 122 123 return IRQ_HANDLED; 124 } 125 126 static int efa_request_irq(struct efa_dev *dev, struct efa_irq *irq) 127 { 128 int err; 129 130 err = request_irq(irq->irqn, irq->handler, 0, irq->name, irq->data); 131 if (err) { 132 dev_err(&dev->pdev->dev, "Failed to request irq %s (%d)\n", 133 irq->name, err); 134 return err; 135 } 136 137 irq_set_affinity_hint(irq->irqn, &irq->affinity_hint_mask); 138 139 return 0; 140 } 141 142 static void efa_setup_comp_irq(struct efa_dev *dev, struct efa_eq *eq, 143 int vector) 144 { 145 u32 cpu; 146 147 cpu = vector - EFA_COMP_EQS_VEC_BASE; 148 snprintf(eq->irq.name, EFA_IRQNAME_SIZE, "efa-comp%d@pci:%s", cpu, 149 pci_name(dev->pdev)); 150 eq->irq.handler = efa_intr_msix_comp; 151 eq->irq.data = eq; 152 eq->irq.vector = vector; 153 eq->irq.irqn = pci_irq_vector(dev->pdev, vector); 154 cpumask_set_cpu(cpu, &eq->irq.affinity_hint_mask); 155 } 156 157 static void efa_free_irq(struct efa_dev *dev, struct efa_irq *irq) 158 { 159 irq_set_affinity_hint(irq->irqn, NULL); 160 free_irq(irq->irqn, irq->data); 161 } 162 163 static void efa_setup_mgmnt_irq(struct efa_dev *dev) 164 { 165 u32 cpu; 166 167 snprintf(dev->admin_irq.name, EFA_IRQNAME_SIZE, 168 "efa-mgmnt@pci:%s", pci_name(dev->pdev)); 169 dev->admin_irq.handler = efa_intr_msix_mgmnt; 170 dev->admin_irq.data = dev; 171 dev->admin_irq.vector = dev->admin_msix_vector_idx; 172 dev->admin_irq.irqn = pci_irq_vector(dev->pdev, 173 dev->admin_msix_vector_idx); 174 cpu = cpumask_first(cpu_online_mask); 175 cpumask_set_cpu(cpu, 176 &dev->admin_irq.affinity_hint_mask); 177 dev_info(&dev->pdev->dev, "Setup irq:%d name:%s\n", 178 dev->admin_irq.irqn, 179 dev->admin_irq.name); 180 } 181 182 static int efa_set_mgmnt_irq(struct efa_dev *dev) 183 { 184 efa_setup_mgmnt_irq(dev); 185 186 return efa_request_irq(dev, &dev->admin_irq); 187 } 188 189 static int efa_request_doorbell_bar(struct efa_dev *dev) 190 { 191 u8 db_bar_idx = dev->dev_attr.db_bar; 192 struct pci_dev *pdev = dev->pdev; 193 int bars; 194 int err; 195 196 if (!(BIT(db_bar_idx) & EFA_BASE_BAR_MASK)) { 197 bars = pci_select_bars(pdev, IORESOURCE_MEM) & BIT(db_bar_idx); 198 199 err = pci_request_selected_regions(pdev, bars, DRV_MODULE_NAME); 200 if (err) { 201 dev_err(&dev->pdev->dev, 202 "pci_request_selected_regions for bar %d failed %d\n", 203 db_bar_idx, err); 204 return err; 205 } 206 } 207 208 dev->db_bar_addr = pci_resource_start(dev->pdev, db_bar_idx); 209 dev->db_bar_len = pci_resource_len(dev->pdev, db_bar_idx); 210 211 return 0; 212 } 213 214 static void efa_release_doorbell_bar(struct efa_dev *dev) 215 { 216 if (!(BIT(dev->dev_attr.db_bar) & EFA_BASE_BAR_MASK)) 217 efa_release_bars(dev, BIT(dev->dev_attr.db_bar)); 218 } 219 220 static void efa_update_hw_hints(struct efa_dev *dev, 221 struct efa_com_get_hw_hints_result *hw_hints) 222 { 223 struct efa_com_dev *edev = &dev->edev; 224 225 if (hw_hints->mmio_read_timeout) 226 edev->mmio_read.mmio_read_timeout = 227 hw_hints->mmio_read_timeout * 1000; 228 229 if (hw_hints->poll_interval) 230 edev->aq.poll_interval = hw_hints->poll_interval; 231 232 if (hw_hints->admin_completion_timeout) 233 edev->aq.completion_timeout = 234 hw_hints->admin_completion_timeout; 235 } 236 237 static void efa_stats_init(struct efa_dev *dev) 238 { 239 atomic64_t *s = (atomic64_t *)&dev->stats; 240 int i; 241 242 for (i = 0; i < sizeof(dev->stats) / sizeof(*s); i++, s++) 243 atomic64_set(s, 0); 244 } 245 246 static void efa_set_host_info(struct efa_dev *dev) 247 { 248 struct efa_admin_set_feature_resp resp = {}; 249 struct efa_admin_set_feature_cmd cmd = {}; 250 struct efa_admin_host_info *hinf; 251 u32 bufsz = sizeof(*hinf); 252 dma_addr_t hinf_dma; 253 254 if (!efa_com_check_supported_feature_id(&dev->edev, 255 EFA_ADMIN_HOST_INFO)) 256 return; 257 258 /* Failures in host info set shall not disturb probe */ 259 hinf = dma_alloc_coherent(&dev->pdev->dev, bufsz, &hinf_dma, 260 GFP_KERNEL); 261 if (!hinf) 262 return; 263 264 strscpy(hinf->os_dist_str, utsname()->release, 265 sizeof(hinf->os_dist_str)); 266 hinf->os_type = EFA_ADMIN_OS_LINUX; 267 strscpy(hinf->kernel_ver_str, utsname()->version, 268 sizeof(hinf->kernel_ver_str)); 269 hinf->kernel_ver = LINUX_VERSION_CODE; 270 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MAJOR, 0); 271 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MINOR, 0); 272 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_SUB_MINOR, 0); 273 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MODULE_TYPE, 0); 274 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_BUS, dev->pdev->bus->number); 275 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_DEVICE, 276 PCI_SLOT(dev->pdev->devfn)); 277 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_FUNCTION, 278 PCI_FUNC(dev->pdev->devfn)); 279 EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MAJOR, 280 EFA_COMMON_SPEC_VERSION_MAJOR); 281 EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MINOR, 282 EFA_COMMON_SPEC_VERSION_MINOR); 283 EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_INTREE, 1); 284 EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_GDR, 0); 285 286 efa_com_set_feature_ex(&dev->edev, &resp, &cmd, EFA_ADMIN_HOST_INFO, 287 hinf_dma, bufsz); 288 289 dma_free_coherent(&dev->pdev->dev, bufsz, hinf, hinf_dma); 290 } 291 292 static void efa_destroy_eq(struct efa_dev *dev, struct efa_eq *eq) 293 { 294 efa_com_eq_destroy(&dev->edev, &eq->eeq); 295 efa_free_irq(dev, &eq->irq); 296 } 297 298 static int efa_create_eq(struct efa_dev *dev, struct efa_eq *eq, u8 msix_vec) 299 { 300 int err; 301 302 efa_setup_comp_irq(dev, eq, msix_vec); 303 err = efa_request_irq(dev, &eq->irq); 304 if (err) 305 return err; 306 307 err = efa_com_eq_init(&dev->edev, &eq->eeq, efa_process_eqe, 308 dev->dev_attr.max_eq_depth, msix_vec); 309 if (err) 310 goto err_free_comp_irq; 311 312 return 0; 313 314 err_free_comp_irq: 315 efa_free_irq(dev, &eq->irq); 316 return err; 317 } 318 319 static int efa_create_eqs(struct efa_dev *dev) 320 { 321 unsigned int neqs = dev->dev_attr.max_eq; 322 int err; 323 int i; 324 325 neqs = min_t(unsigned int, neqs, 326 dev->num_irq_vectors - EFA_COMP_EQS_VEC_BASE); 327 328 dev->neqs = neqs; 329 dev->eqs = kcalloc(neqs, sizeof(*dev->eqs), GFP_KERNEL); 330 if (!dev->eqs) 331 return -ENOMEM; 332 333 for (i = 0; i < neqs; i++) { 334 err = efa_create_eq(dev, &dev->eqs[i], 335 i + EFA_COMP_EQS_VEC_BASE); 336 if (err) 337 goto err_destroy_eqs; 338 } 339 340 return 0; 341 342 err_destroy_eqs: 343 for (i--; i >= 0; i--) 344 efa_destroy_eq(dev, &dev->eqs[i]); 345 kfree(dev->eqs); 346 347 return err; 348 } 349 350 static void efa_destroy_eqs(struct efa_dev *dev) 351 { 352 int i; 353 354 for (i = 0; i < dev->neqs; i++) 355 efa_destroy_eq(dev, &dev->eqs[i]); 356 357 kfree(dev->eqs); 358 } 359 360 static const struct ib_device_ops efa_dev_ops = { 361 .owner = THIS_MODULE, 362 .driver_id = RDMA_DRIVER_EFA, 363 .uverbs_abi_ver = EFA_UVERBS_ABI_VERSION, 364 365 .alloc_hw_port_stats = efa_alloc_hw_port_stats, 366 .alloc_hw_device_stats = efa_alloc_hw_device_stats, 367 .alloc_pd = efa_alloc_pd, 368 .alloc_ucontext = efa_alloc_ucontext, 369 .create_cq = efa_create_cq, 370 .create_qp = efa_create_qp, 371 .create_user_ah = efa_create_ah, 372 .dealloc_pd = efa_dealloc_pd, 373 .dealloc_ucontext = efa_dealloc_ucontext, 374 .dereg_mr = efa_dereg_mr, 375 .destroy_ah = efa_destroy_ah, 376 .destroy_cq = efa_destroy_cq, 377 .destroy_qp = efa_destroy_qp, 378 .get_hw_stats = efa_get_hw_stats, 379 .get_link_layer = efa_port_link_layer, 380 .get_port_immutable = efa_get_port_immutable, 381 .mmap = efa_mmap, 382 .mmap_free = efa_mmap_free, 383 .modify_qp = efa_modify_qp, 384 .query_device = efa_query_device, 385 .query_gid = efa_query_gid, 386 .query_pkey = efa_query_pkey, 387 .query_port = efa_query_port, 388 .query_qp = efa_query_qp, 389 .reg_user_mr = efa_reg_mr, 390 .reg_user_mr_dmabuf = efa_reg_user_mr_dmabuf, 391 392 INIT_RDMA_OBJ_SIZE(ib_ah, efa_ah, ibah), 393 INIT_RDMA_OBJ_SIZE(ib_cq, efa_cq, ibcq), 394 INIT_RDMA_OBJ_SIZE(ib_pd, efa_pd, ibpd), 395 INIT_RDMA_OBJ_SIZE(ib_qp, efa_qp, ibqp), 396 INIT_RDMA_OBJ_SIZE(ib_ucontext, efa_ucontext, ibucontext), 397 }; 398 399 static int efa_ib_device_add(struct efa_dev *dev) 400 { 401 struct efa_com_get_hw_hints_result hw_hints; 402 struct pci_dev *pdev = dev->pdev; 403 int err; 404 405 efa_stats_init(dev); 406 407 err = efa_com_get_device_attr(&dev->edev, &dev->dev_attr); 408 if (err) 409 return err; 410 411 dev_dbg(&dev->pdev->dev, "Doorbells bar (%d)\n", dev->dev_attr.db_bar); 412 err = efa_request_doorbell_bar(dev); 413 if (err) 414 return err; 415 416 err = efa_com_get_hw_hints(&dev->edev, &hw_hints); 417 if (err) 418 goto err_release_doorbell_bar; 419 420 efa_update_hw_hints(dev, &hw_hints); 421 422 /* Try to enable all the available aenq groups */ 423 err = efa_com_set_aenq_config(&dev->edev, EFA_AENQ_ENABLED_GROUPS); 424 if (err) 425 goto err_release_doorbell_bar; 426 427 err = efa_create_eqs(dev); 428 if (err) 429 goto err_release_doorbell_bar; 430 431 efa_set_host_info(dev); 432 433 dev->ibdev.node_type = RDMA_NODE_UNSPECIFIED; 434 dev->ibdev.phys_port_cnt = 1; 435 dev->ibdev.num_comp_vectors = dev->neqs ?: 1; 436 dev->ibdev.dev.parent = &pdev->dev; 437 438 ib_set_device_ops(&dev->ibdev, &efa_dev_ops); 439 440 dev->ibdev.driver_def = efa_uapi_defs; 441 442 err = ib_register_device(&dev->ibdev, "efa_%d", &pdev->dev); 443 if (err) 444 goto err_destroy_eqs; 445 446 ibdev_info(&dev->ibdev, "IB device registered\n"); 447 448 return 0; 449 450 err_destroy_eqs: 451 efa_destroy_eqs(dev); 452 err_release_doorbell_bar: 453 efa_release_doorbell_bar(dev); 454 return err; 455 } 456 457 static void efa_ib_device_remove(struct efa_dev *dev) 458 { 459 ibdev_info(&dev->ibdev, "Unregister ib device\n"); 460 ib_unregister_device(&dev->ibdev); 461 efa_destroy_eqs(dev); 462 efa_com_dev_reset(&dev->edev, EFA_REGS_RESET_NORMAL); 463 efa_release_doorbell_bar(dev); 464 } 465 466 static void efa_disable_msix(struct efa_dev *dev) 467 { 468 pci_free_irq_vectors(dev->pdev); 469 } 470 471 static int efa_enable_msix(struct efa_dev *dev) 472 { 473 int max_vecs, num_vecs; 474 475 /* 476 * Reserve the max msix vectors we might need, one vector is reserved 477 * for admin. 478 */ 479 max_vecs = min_t(int, pci_msix_vec_count(dev->pdev), 480 num_online_cpus() + 1); 481 dev_dbg(&dev->pdev->dev, "Trying to enable MSI-X, vectors %d\n", 482 max_vecs); 483 484 dev->admin_msix_vector_idx = EFA_MGMNT_MSIX_VEC_IDX; 485 num_vecs = pci_alloc_irq_vectors(dev->pdev, 1, 486 max_vecs, PCI_IRQ_MSIX); 487 488 if (num_vecs < 0) { 489 dev_err(&dev->pdev->dev, "Failed to enable MSI-X. error %d\n", 490 num_vecs); 491 return -ENOSPC; 492 } 493 494 dev_dbg(&dev->pdev->dev, "Allocated %d MSI-X vectors\n", num_vecs); 495 496 dev->num_irq_vectors = num_vecs; 497 498 return 0; 499 } 500 501 static int efa_device_init(struct efa_com_dev *edev, struct pci_dev *pdev) 502 { 503 int dma_width; 504 int err; 505 506 err = efa_com_dev_reset(edev, EFA_REGS_RESET_NORMAL); 507 if (err) 508 return err; 509 510 err = efa_com_validate_version(edev); 511 if (err) 512 return err; 513 514 dma_width = efa_com_get_dma_width(edev); 515 if (dma_width < 0) { 516 err = dma_width; 517 return err; 518 } 519 520 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(dma_width)); 521 if (err) { 522 dev_err(&pdev->dev, "dma_set_mask_and_coherent failed %d\n", err); 523 return err; 524 } 525 526 dma_set_max_seg_size(&pdev->dev, UINT_MAX); 527 return 0; 528 } 529 530 static struct efa_dev *efa_probe_device(struct pci_dev *pdev) 531 { 532 struct efa_com_dev *edev; 533 struct efa_dev *dev; 534 int bars; 535 int err; 536 537 err = pci_enable_device_mem(pdev); 538 if (err) { 539 dev_err(&pdev->dev, "pci_enable_device_mem() failed!\n"); 540 return ERR_PTR(err); 541 } 542 543 pci_set_master(pdev); 544 545 dev = ib_alloc_device(efa_dev, ibdev); 546 if (!dev) { 547 dev_err(&pdev->dev, "Device alloc failed\n"); 548 err = -ENOMEM; 549 goto err_disable_device; 550 } 551 552 pci_set_drvdata(pdev, dev); 553 edev = &dev->edev; 554 edev->efa_dev = dev; 555 edev->dmadev = &pdev->dev; 556 dev->pdev = pdev; 557 xa_init(&dev->cqs_xa); 558 559 bars = pci_select_bars(pdev, IORESOURCE_MEM) & EFA_BASE_BAR_MASK; 560 err = pci_request_selected_regions(pdev, bars, DRV_MODULE_NAME); 561 if (err) { 562 dev_err(&pdev->dev, "pci_request_selected_regions failed %d\n", 563 err); 564 goto err_ibdev_destroy; 565 } 566 567 dev->reg_bar_addr = pci_resource_start(pdev, EFA_REG_BAR); 568 dev->reg_bar_len = pci_resource_len(pdev, EFA_REG_BAR); 569 dev->mem_bar_addr = pci_resource_start(pdev, EFA_MEM_BAR); 570 dev->mem_bar_len = pci_resource_len(pdev, EFA_MEM_BAR); 571 572 edev->reg_bar = devm_ioremap(&pdev->dev, 573 dev->reg_bar_addr, 574 dev->reg_bar_len); 575 if (!edev->reg_bar) { 576 dev_err(&pdev->dev, "Failed to remap register bar\n"); 577 err = -EFAULT; 578 goto err_release_bars; 579 } 580 581 err = efa_com_mmio_reg_read_init(edev); 582 if (err) { 583 dev_err(&pdev->dev, "Failed to init readless MMIO\n"); 584 goto err_iounmap; 585 } 586 587 err = efa_device_init(edev, pdev); 588 if (err) { 589 dev_err(&pdev->dev, "EFA device init failed\n"); 590 if (err == -ETIME) 591 err = -EPROBE_DEFER; 592 goto err_reg_read_destroy; 593 } 594 595 err = efa_enable_msix(dev); 596 if (err) 597 goto err_reg_read_destroy; 598 599 edev->aq.msix_vector_idx = dev->admin_msix_vector_idx; 600 edev->aenq.msix_vector_idx = dev->admin_msix_vector_idx; 601 602 err = efa_set_mgmnt_irq(dev); 603 if (err) 604 goto err_disable_msix; 605 606 err = efa_com_admin_init(edev, &aenq_handlers); 607 if (err) 608 goto err_free_mgmnt_irq; 609 610 return dev; 611 612 err_free_mgmnt_irq: 613 efa_free_irq(dev, &dev->admin_irq); 614 err_disable_msix: 615 efa_disable_msix(dev); 616 err_reg_read_destroy: 617 efa_com_mmio_reg_read_destroy(edev); 618 err_iounmap: 619 devm_iounmap(&pdev->dev, edev->reg_bar); 620 err_release_bars: 621 efa_release_bars(dev, EFA_BASE_BAR_MASK); 622 err_ibdev_destroy: 623 ib_dealloc_device(&dev->ibdev); 624 err_disable_device: 625 pci_disable_device(pdev); 626 return ERR_PTR(err); 627 } 628 629 static void efa_remove_device(struct pci_dev *pdev) 630 { 631 struct efa_dev *dev = pci_get_drvdata(pdev); 632 struct efa_com_dev *edev; 633 634 edev = &dev->edev; 635 efa_com_admin_destroy(edev); 636 efa_free_irq(dev, &dev->admin_irq); 637 efa_disable_msix(dev); 638 efa_com_mmio_reg_read_destroy(edev); 639 devm_iounmap(&pdev->dev, edev->reg_bar); 640 efa_release_bars(dev, EFA_BASE_BAR_MASK); 641 xa_destroy(&dev->cqs_xa); 642 ib_dealloc_device(&dev->ibdev); 643 pci_disable_device(pdev); 644 } 645 646 static int efa_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 647 { 648 struct efa_dev *dev; 649 int err; 650 651 dev = efa_probe_device(pdev); 652 if (IS_ERR(dev)) 653 return PTR_ERR(dev); 654 655 err = efa_ib_device_add(dev); 656 if (err) 657 goto err_remove_device; 658 659 return 0; 660 661 err_remove_device: 662 efa_remove_device(pdev); 663 return err; 664 } 665 666 static void efa_remove(struct pci_dev *pdev) 667 { 668 struct efa_dev *dev = pci_get_drvdata(pdev); 669 670 efa_ib_device_remove(dev); 671 efa_remove_device(pdev); 672 } 673 674 static struct pci_driver efa_pci_driver = { 675 .name = DRV_MODULE_NAME, 676 .id_table = efa_pci_tbl, 677 .probe = efa_probe, 678 .remove = efa_remove, 679 }; 680 681 module_pci_driver(efa_pci_driver); 682