1 // SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause 2 /* 3 * Copyright 2018-2022 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 13 #include "efa.h" 14 15 #define PCI_DEV_ID_EFA0_VF 0xefa0 16 #define PCI_DEV_ID_EFA1_VF 0xefa1 17 #define PCI_DEV_ID_EFA2_VF 0xefa2 18 19 static const struct pci_device_id efa_pci_tbl[] = { 20 { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA0_VF) }, 21 { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA1_VF) }, 22 { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA2_VF) }, 23 { } 24 }; 25 26 MODULE_AUTHOR("Amazon.com, Inc. or its affiliates"); 27 MODULE_LICENSE("Dual BSD/GPL"); 28 MODULE_DESCRIPTION(DEVICE_NAME); 29 MODULE_DEVICE_TABLE(pci, efa_pci_tbl); 30 31 #define EFA_REG_BAR 0 32 #define EFA_MEM_BAR 2 33 #define EFA_BASE_BAR_MASK (BIT(EFA_REG_BAR) | BIT(EFA_MEM_BAR)) 34 35 #define EFA_AENQ_ENABLED_GROUPS \ 36 (BIT(EFA_ADMIN_FATAL_ERROR) | BIT(EFA_ADMIN_WARNING) | \ 37 BIT(EFA_ADMIN_NOTIFICATION) | BIT(EFA_ADMIN_KEEP_ALIVE)) 38 39 /* This handler will called for unknown event group or unimplemented handlers */ 40 static void unimplemented_aenq_handler(void *data, 41 struct efa_admin_aenq_entry *aenq_e) 42 { 43 struct efa_dev *dev = (struct efa_dev *)data; 44 45 ibdev_err(&dev->ibdev, 46 "Unknown event was received or event with unimplemented handler\n"); 47 } 48 49 static void efa_keep_alive(void *data, struct efa_admin_aenq_entry *aenq_e) 50 { 51 struct efa_dev *dev = (struct efa_dev *)data; 52 53 atomic64_inc(&dev->stats.keep_alive_rcvd); 54 } 55 56 static struct efa_aenq_handlers aenq_handlers = { 57 .handlers = { 58 [EFA_ADMIN_KEEP_ALIVE] = efa_keep_alive, 59 }, 60 .unimplemented_handler = unimplemented_aenq_handler 61 }; 62 63 static void efa_release_bars(struct efa_dev *dev, int bars_mask) 64 { 65 struct pci_dev *pdev = dev->pdev; 66 int release_bars; 67 68 release_bars = pci_select_bars(pdev, IORESOURCE_MEM) & bars_mask; 69 pci_release_selected_regions(pdev, release_bars); 70 } 71 72 static void efa_process_comp_eqe(struct efa_dev *dev, struct efa_admin_eqe *eqe) 73 { 74 u16 cqn = eqe->u.comp_event.cqn; 75 struct efa_cq *cq; 76 77 /* Safe to load as we're in irq and removal calls synchronize_irq() */ 78 cq = xa_load(&dev->cqs_xa, cqn); 79 if (unlikely(!cq)) { 80 ibdev_err_ratelimited(&dev->ibdev, 81 "Completion event on non-existent CQ[%u]", 82 cqn); 83 return; 84 } 85 86 cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); 87 } 88 89 static void efa_process_eqe(struct efa_com_eq *eeq, struct efa_admin_eqe *eqe) 90 { 91 struct efa_dev *dev = container_of(eeq->edev, struct efa_dev, edev); 92 93 if (likely(EFA_GET(&eqe->common, EFA_ADMIN_EQE_EVENT_TYPE) == 94 EFA_ADMIN_EQE_EVENT_TYPE_COMPLETION)) 95 efa_process_comp_eqe(dev, eqe); 96 else 97 ibdev_err_ratelimited(&dev->ibdev, 98 "Unknown event type received %lu", 99 EFA_GET(&eqe->common, 100 EFA_ADMIN_EQE_EVENT_TYPE)); 101 } 102 103 static irqreturn_t efa_intr_msix_comp(int irq, void *data) 104 { 105 struct efa_eq *eq = data; 106 struct efa_com_dev *edev = eq->eeq.edev; 107 108 efa_com_eq_comp_intr_handler(edev, &eq->eeq); 109 110 return IRQ_HANDLED; 111 } 112 113 static irqreturn_t efa_intr_msix_mgmnt(int irq, void *data) 114 { 115 struct efa_dev *dev = data; 116 117 efa_com_admin_q_comp_intr_handler(&dev->edev); 118 efa_com_aenq_intr_handler(&dev->edev, data); 119 120 return IRQ_HANDLED; 121 } 122 123 static int efa_request_irq(struct efa_dev *dev, struct efa_irq *irq) 124 { 125 int err; 126 127 err = request_irq(irq->irqn, irq->handler, 0, irq->name, irq->data); 128 if (err) { 129 dev_err(&dev->pdev->dev, "Failed to request irq %s (%d)\n", 130 irq->name, err); 131 return err; 132 } 133 134 irq_set_affinity_hint(irq->irqn, &irq->affinity_hint_mask); 135 136 return 0; 137 } 138 139 static void efa_setup_comp_irq(struct efa_dev *dev, struct efa_eq *eq, 140 int vector) 141 { 142 u32 cpu; 143 144 cpu = vector - EFA_COMP_EQS_VEC_BASE; 145 snprintf(eq->irq.name, EFA_IRQNAME_SIZE, "efa-comp%d@pci:%s", cpu, 146 pci_name(dev->pdev)); 147 eq->irq.handler = efa_intr_msix_comp; 148 eq->irq.data = eq; 149 eq->irq.vector = vector; 150 eq->irq.irqn = pci_irq_vector(dev->pdev, vector); 151 cpumask_set_cpu(cpu, &eq->irq.affinity_hint_mask); 152 } 153 154 static void efa_free_irq(struct efa_dev *dev, struct efa_irq *irq) 155 { 156 irq_set_affinity_hint(irq->irqn, NULL); 157 free_irq(irq->irqn, irq->data); 158 } 159 160 static void efa_setup_mgmnt_irq(struct efa_dev *dev) 161 { 162 u32 cpu; 163 164 snprintf(dev->admin_irq.name, EFA_IRQNAME_SIZE, 165 "efa-mgmnt@pci:%s", pci_name(dev->pdev)); 166 dev->admin_irq.handler = efa_intr_msix_mgmnt; 167 dev->admin_irq.data = dev; 168 dev->admin_irq.vector = dev->admin_msix_vector_idx; 169 dev->admin_irq.irqn = pci_irq_vector(dev->pdev, 170 dev->admin_msix_vector_idx); 171 cpu = cpumask_first(cpu_online_mask); 172 cpumask_set_cpu(cpu, 173 &dev->admin_irq.affinity_hint_mask); 174 dev_info(&dev->pdev->dev, "Setup irq:%d name:%s\n", 175 dev->admin_irq.irqn, 176 dev->admin_irq.name); 177 } 178 179 static int efa_set_mgmnt_irq(struct efa_dev *dev) 180 { 181 efa_setup_mgmnt_irq(dev); 182 183 return efa_request_irq(dev, &dev->admin_irq); 184 } 185 186 static int efa_request_doorbell_bar(struct efa_dev *dev) 187 { 188 u8 db_bar_idx = dev->dev_attr.db_bar; 189 struct pci_dev *pdev = dev->pdev; 190 int bars; 191 int err; 192 193 if (!(BIT(db_bar_idx) & EFA_BASE_BAR_MASK)) { 194 bars = pci_select_bars(pdev, IORESOURCE_MEM) & BIT(db_bar_idx); 195 196 err = pci_request_selected_regions(pdev, bars, DRV_MODULE_NAME); 197 if (err) { 198 dev_err(&dev->pdev->dev, 199 "pci_request_selected_regions for bar %d failed %d\n", 200 db_bar_idx, err); 201 return err; 202 } 203 } 204 205 dev->db_bar_addr = pci_resource_start(dev->pdev, db_bar_idx); 206 dev->db_bar_len = pci_resource_len(dev->pdev, db_bar_idx); 207 208 return 0; 209 } 210 211 static void efa_release_doorbell_bar(struct efa_dev *dev) 212 { 213 if (!(BIT(dev->dev_attr.db_bar) & EFA_BASE_BAR_MASK)) 214 efa_release_bars(dev, BIT(dev->dev_attr.db_bar)); 215 } 216 217 static void efa_update_hw_hints(struct efa_dev *dev, 218 struct efa_com_get_hw_hints_result *hw_hints) 219 { 220 struct efa_com_dev *edev = &dev->edev; 221 222 if (hw_hints->mmio_read_timeout) 223 edev->mmio_read.mmio_read_timeout = 224 hw_hints->mmio_read_timeout * 1000; 225 226 if (hw_hints->poll_interval) 227 edev->aq.poll_interval = hw_hints->poll_interval; 228 229 if (hw_hints->admin_completion_timeout) 230 edev->aq.completion_timeout = 231 hw_hints->admin_completion_timeout; 232 } 233 234 static void efa_stats_init(struct efa_dev *dev) 235 { 236 atomic64_t *s = (atomic64_t *)&dev->stats; 237 int i; 238 239 for (i = 0; i < sizeof(dev->stats) / sizeof(*s); i++, s++) 240 atomic64_set(s, 0); 241 } 242 243 static void efa_set_host_info(struct efa_dev *dev) 244 { 245 struct efa_admin_set_feature_resp resp = {}; 246 struct efa_admin_set_feature_cmd cmd = {}; 247 struct efa_admin_host_info *hinf; 248 u32 bufsz = sizeof(*hinf); 249 dma_addr_t hinf_dma; 250 251 if (!efa_com_check_supported_feature_id(&dev->edev, 252 EFA_ADMIN_HOST_INFO)) 253 return; 254 255 /* Failures in host info set shall not disturb probe */ 256 hinf = dma_alloc_coherent(&dev->pdev->dev, bufsz, &hinf_dma, 257 GFP_KERNEL); 258 if (!hinf) 259 return; 260 261 strscpy(hinf->os_dist_str, utsname()->release, 262 sizeof(hinf->os_dist_str)); 263 hinf->os_type = EFA_ADMIN_OS_LINUX; 264 strscpy(hinf->kernel_ver_str, utsname()->version, 265 sizeof(hinf->kernel_ver_str)); 266 hinf->kernel_ver = LINUX_VERSION_CODE; 267 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MAJOR, 0); 268 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MINOR, 0); 269 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_SUB_MINOR, 0); 270 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MODULE_TYPE, 0); 271 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_BUS, dev->pdev->bus->number); 272 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_DEVICE, 273 PCI_SLOT(dev->pdev->devfn)); 274 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_FUNCTION, 275 PCI_FUNC(dev->pdev->devfn)); 276 EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MAJOR, 277 EFA_COMMON_SPEC_VERSION_MAJOR); 278 EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MINOR, 279 EFA_COMMON_SPEC_VERSION_MINOR); 280 EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_INTREE, 1); 281 EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_GDR, 0); 282 283 efa_com_set_feature_ex(&dev->edev, &resp, &cmd, EFA_ADMIN_HOST_INFO, 284 hinf_dma, bufsz); 285 286 dma_free_coherent(&dev->pdev->dev, bufsz, hinf, hinf_dma); 287 } 288 289 static void efa_destroy_eq(struct efa_dev *dev, struct efa_eq *eq) 290 { 291 efa_com_eq_destroy(&dev->edev, &eq->eeq); 292 efa_free_irq(dev, &eq->irq); 293 } 294 295 static int efa_create_eq(struct efa_dev *dev, struct efa_eq *eq, u8 msix_vec) 296 { 297 int err; 298 299 efa_setup_comp_irq(dev, eq, msix_vec); 300 err = efa_request_irq(dev, &eq->irq); 301 if (err) 302 return err; 303 304 err = efa_com_eq_init(&dev->edev, &eq->eeq, efa_process_eqe, 305 dev->dev_attr.max_eq_depth, msix_vec); 306 if (err) 307 goto err_free_comp_irq; 308 309 return 0; 310 311 err_free_comp_irq: 312 efa_free_irq(dev, &eq->irq); 313 return err; 314 } 315 316 static int efa_create_eqs(struct efa_dev *dev) 317 { 318 unsigned int neqs = dev->dev_attr.max_eq; 319 int err; 320 int i; 321 322 neqs = min_t(unsigned int, neqs, num_online_cpus()); 323 dev->neqs = neqs; 324 dev->eqs = kcalloc(neqs, sizeof(*dev->eqs), GFP_KERNEL); 325 if (!dev->eqs) 326 return -ENOMEM; 327 328 for (i = 0; i < neqs; i++) { 329 err = efa_create_eq(dev, &dev->eqs[i], 330 i + EFA_COMP_EQS_VEC_BASE); 331 if (err) 332 goto err_destroy_eqs; 333 } 334 335 return 0; 336 337 err_destroy_eqs: 338 for (i--; i >= 0; i--) 339 efa_destroy_eq(dev, &dev->eqs[i]); 340 kfree(dev->eqs); 341 342 return err; 343 } 344 345 static void efa_destroy_eqs(struct efa_dev *dev) 346 { 347 int i; 348 349 for (i = 0; i < dev->neqs; i++) 350 efa_destroy_eq(dev, &dev->eqs[i]); 351 352 kfree(dev->eqs); 353 } 354 355 static const struct ib_device_ops efa_dev_ops = { 356 .owner = THIS_MODULE, 357 .driver_id = RDMA_DRIVER_EFA, 358 .uverbs_abi_ver = EFA_UVERBS_ABI_VERSION, 359 360 .alloc_hw_port_stats = efa_alloc_hw_port_stats, 361 .alloc_hw_device_stats = efa_alloc_hw_device_stats, 362 .alloc_pd = efa_alloc_pd, 363 .alloc_ucontext = efa_alloc_ucontext, 364 .create_cq = efa_create_cq, 365 .create_qp = efa_create_qp, 366 .create_user_ah = efa_create_ah, 367 .dealloc_pd = efa_dealloc_pd, 368 .dealloc_ucontext = efa_dealloc_ucontext, 369 .dereg_mr = efa_dereg_mr, 370 .destroy_ah = efa_destroy_ah, 371 .destroy_cq = efa_destroy_cq, 372 .destroy_qp = efa_destroy_qp, 373 .get_hw_stats = efa_get_hw_stats, 374 .get_link_layer = efa_port_link_layer, 375 .get_port_immutable = efa_get_port_immutable, 376 .mmap = efa_mmap, 377 .mmap_free = efa_mmap_free, 378 .modify_qp = efa_modify_qp, 379 .query_device = efa_query_device, 380 .query_gid = efa_query_gid, 381 .query_pkey = efa_query_pkey, 382 .query_port = efa_query_port, 383 .query_qp = efa_query_qp, 384 .reg_user_mr = efa_reg_mr, 385 .reg_user_mr_dmabuf = efa_reg_user_mr_dmabuf, 386 387 INIT_RDMA_OBJ_SIZE(ib_ah, efa_ah, ibah), 388 INIT_RDMA_OBJ_SIZE(ib_cq, efa_cq, ibcq), 389 INIT_RDMA_OBJ_SIZE(ib_pd, efa_pd, ibpd), 390 INIT_RDMA_OBJ_SIZE(ib_qp, efa_qp, ibqp), 391 INIT_RDMA_OBJ_SIZE(ib_ucontext, efa_ucontext, ibucontext), 392 }; 393 394 static int efa_ib_device_add(struct efa_dev *dev) 395 { 396 struct efa_com_get_hw_hints_result hw_hints; 397 struct pci_dev *pdev = dev->pdev; 398 int err; 399 400 efa_stats_init(dev); 401 402 err = efa_com_get_device_attr(&dev->edev, &dev->dev_attr); 403 if (err) 404 return err; 405 406 dev_dbg(&dev->pdev->dev, "Doorbells bar (%d)\n", dev->dev_attr.db_bar); 407 err = efa_request_doorbell_bar(dev); 408 if (err) 409 return err; 410 411 err = efa_com_get_hw_hints(&dev->edev, &hw_hints); 412 if (err) 413 goto err_release_doorbell_bar; 414 415 efa_update_hw_hints(dev, &hw_hints); 416 417 /* Try to enable all the available aenq groups */ 418 err = efa_com_set_aenq_config(&dev->edev, EFA_AENQ_ENABLED_GROUPS); 419 if (err) 420 goto err_release_doorbell_bar; 421 422 err = efa_create_eqs(dev); 423 if (err) 424 goto err_release_doorbell_bar; 425 426 efa_set_host_info(dev); 427 428 dev->ibdev.node_type = RDMA_NODE_UNSPECIFIED; 429 dev->ibdev.phys_port_cnt = 1; 430 dev->ibdev.num_comp_vectors = dev->neqs ?: 1; 431 dev->ibdev.dev.parent = &pdev->dev; 432 433 ib_set_device_ops(&dev->ibdev, &efa_dev_ops); 434 435 err = ib_register_device(&dev->ibdev, "efa_%d", &pdev->dev); 436 if (err) 437 goto err_destroy_eqs; 438 439 ibdev_info(&dev->ibdev, "IB device registered\n"); 440 441 return 0; 442 443 err_destroy_eqs: 444 efa_destroy_eqs(dev); 445 err_release_doorbell_bar: 446 efa_release_doorbell_bar(dev); 447 return err; 448 } 449 450 static void efa_ib_device_remove(struct efa_dev *dev) 451 { 452 ibdev_info(&dev->ibdev, "Unregister ib device\n"); 453 ib_unregister_device(&dev->ibdev); 454 efa_destroy_eqs(dev); 455 efa_com_dev_reset(&dev->edev, EFA_REGS_RESET_NORMAL); 456 efa_release_doorbell_bar(dev); 457 } 458 459 static void efa_disable_msix(struct efa_dev *dev) 460 { 461 pci_free_irq_vectors(dev->pdev); 462 } 463 464 static int efa_enable_msix(struct efa_dev *dev) 465 { 466 int msix_vecs, irq_num; 467 468 /* 469 * Reserve the max msix vectors we might need, one vector is reserved 470 * for admin. 471 */ 472 msix_vecs = min_t(int, pci_msix_vec_count(dev->pdev), 473 num_online_cpus() + 1); 474 dev_dbg(&dev->pdev->dev, "Trying to enable MSI-X, vectors %d\n", 475 msix_vecs); 476 477 dev->admin_msix_vector_idx = EFA_MGMNT_MSIX_VEC_IDX; 478 irq_num = pci_alloc_irq_vectors(dev->pdev, msix_vecs, 479 msix_vecs, PCI_IRQ_MSIX); 480 481 if (irq_num < 0) { 482 dev_err(&dev->pdev->dev, "Failed to enable MSI-X. irq_num %d\n", 483 irq_num); 484 return -ENOSPC; 485 } 486 487 if (irq_num != msix_vecs) { 488 efa_disable_msix(dev); 489 dev_err(&dev->pdev->dev, 490 "Allocated %d MSI-X (out of %d requested)\n", 491 irq_num, msix_vecs); 492 return -ENOSPC; 493 } 494 495 return 0; 496 } 497 498 static int efa_device_init(struct efa_com_dev *edev, struct pci_dev *pdev) 499 { 500 int dma_width; 501 int err; 502 503 err = efa_com_dev_reset(edev, EFA_REGS_RESET_NORMAL); 504 if (err) 505 return err; 506 507 err = efa_com_validate_version(edev); 508 if (err) 509 return err; 510 511 dma_width = efa_com_get_dma_width(edev); 512 if (dma_width < 0) { 513 err = dma_width; 514 return err; 515 } 516 517 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(dma_width)); 518 if (err) { 519 dev_err(&pdev->dev, "dma_set_mask_and_coherent failed %d\n", err); 520 return err; 521 } 522 523 dma_set_max_seg_size(&pdev->dev, UINT_MAX); 524 return 0; 525 } 526 527 static struct efa_dev *efa_probe_device(struct pci_dev *pdev) 528 { 529 struct efa_com_dev *edev; 530 struct efa_dev *dev; 531 int bars; 532 int err; 533 534 err = pci_enable_device_mem(pdev); 535 if (err) { 536 dev_err(&pdev->dev, "pci_enable_device_mem() failed!\n"); 537 return ERR_PTR(err); 538 } 539 540 pci_set_master(pdev); 541 542 dev = ib_alloc_device(efa_dev, ibdev); 543 if (!dev) { 544 dev_err(&pdev->dev, "Device alloc failed\n"); 545 err = -ENOMEM; 546 goto err_disable_device; 547 } 548 549 pci_set_drvdata(pdev, dev); 550 edev = &dev->edev; 551 edev->efa_dev = dev; 552 edev->dmadev = &pdev->dev; 553 dev->pdev = pdev; 554 xa_init(&dev->cqs_xa); 555 556 bars = pci_select_bars(pdev, IORESOURCE_MEM) & EFA_BASE_BAR_MASK; 557 err = pci_request_selected_regions(pdev, bars, DRV_MODULE_NAME); 558 if (err) { 559 dev_err(&pdev->dev, "pci_request_selected_regions failed %d\n", 560 err); 561 goto err_ibdev_destroy; 562 } 563 564 dev->reg_bar_addr = pci_resource_start(pdev, EFA_REG_BAR); 565 dev->reg_bar_len = pci_resource_len(pdev, EFA_REG_BAR); 566 dev->mem_bar_addr = pci_resource_start(pdev, EFA_MEM_BAR); 567 dev->mem_bar_len = pci_resource_len(pdev, EFA_MEM_BAR); 568 569 edev->reg_bar = devm_ioremap(&pdev->dev, 570 dev->reg_bar_addr, 571 dev->reg_bar_len); 572 if (!edev->reg_bar) { 573 dev_err(&pdev->dev, "Failed to remap register bar\n"); 574 err = -EFAULT; 575 goto err_release_bars; 576 } 577 578 err = efa_com_mmio_reg_read_init(edev); 579 if (err) { 580 dev_err(&pdev->dev, "Failed to init readless MMIO\n"); 581 goto err_iounmap; 582 } 583 584 err = efa_device_init(edev, pdev); 585 if (err) { 586 dev_err(&pdev->dev, "EFA device init failed\n"); 587 if (err == -ETIME) 588 err = -EPROBE_DEFER; 589 goto err_reg_read_destroy; 590 } 591 592 err = efa_enable_msix(dev); 593 if (err) 594 goto err_reg_read_destroy; 595 596 edev->aq.msix_vector_idx = dev->admin_msix_vector_idx; 597 edev->aenq.msix_vector_idx = dev->admin_msix_vector_idx; 598 599 err = efa_set_mgmnt_irq(dev); 600 if (err) 601 goto err_disable_msix; 602 603 err = efa_com_admin_init(edev, &aenq_handlers); 604 if (err) 605 goto err_free_mgmnt_irq; 606 607 return dev; 608 609 err_free_mgmnt_irq: 610 efa_free_irq(dev, &dev->admin_irq); 611 err_disable_msix: 612 efa_disable_msix(dev); 613 err_reg_read_destroy: 614 efa_com_mmio_reg_read_destroy(edev); 615 err_iounmap: 616 devm_iounmap(&pdev->dev, edev->reg_bar); 617 err_release_bars: 618 efa_release_bars(dev, EFA_BASE_BAR_MASK); 619 err_ibdev_destroy: 620 ib_dealloc_device(&dev->ibdev); 621 err_disable_device: 622 pci_disable_device(pdev); 623 return ERR_PTR(err); 624 } 625 626 static void efa_remove_device(struct pci_dev *pdev) 627 { 628 struct efa_dev *dev = pci_get_drvdata(pdev); 629 struct efa_com_dev *edev; 630 631 edev = &dev->edev; 632 efa_com_admin_destroy(edev); 633 efa_free_irq(dev, &dev->admin_irq); 634 efa_disable_msix(dev); 635 efa_com_mmio_reg_read_destroy(edev); 636 devm_iounmap(&pdev->dev, edev->reg_bar); 637 efa_release_bars(dev, EFA_BASE_BAR_MASK); 638 xa_destroy(&dev->cqs_xa); 639 ib_dealloc_device(&dev->ibdev); 640 pci_disable_device(pdev); 641 } 642 643 static int efa_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 644 { 645 struct efa_dev *dev; 646 int err; 647 648 dev = efa_probe_device(pdev); 649 if (IS_ERR(dev)) 650 return PTR_ERR(dev); 651 652 err = efa_ib_device_add(dev); 653 if (err) 654 goto err_remove_device; 655 656 return 0; 657 658 err_remove_device: 659 efa_remove_device(pdev); 660 return err; 661 } 662 663 static void efa_remove(struct pci_dev *pdev) 664 { 665 struct efa_dev *dev = pci_get_drvdata(pdev); 666 667 efa_ib_device_remove(dev); 668 efa_remove_device(pdev); 669 } 670 671 static struct pci_driver efa_pci_driver = { 672 .name = DRV_MODULE_NAME, 673 .id_table = efa_pci_tbl, 674 .probe = efa_probe, 675 .remove = efa_remove, 676 }; 677 678 module_pci_driver(efa_pci_driver); 679