1 // SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause 2 /* 3 * Copyright 2018-2021 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 18 static const struct pci_device_id efa_pci_tbl[] = { 19 { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA0_VF) }, 20 { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA1_VF) }, 21 { } 22 }; 23 24 MODULE_AUTHOR("Amazon.com, Inc. or its affiliates"); 25 MODULE_LICENSE("Dual BSD/GPL"); 26 MODULE_DESCRIPTION(DEVICE_NAME); 27 MODULE_DEVICE_TABLE(pci, efa_pci_tbl); 28 29 #define EFA_REG_BAR 0 30 #define EFA_MEM_BAR 2 31 #define EFA_BASE_BAR_MASK (BIT(EFA_REG_BAR) | BIT(EFA_MEM_BAR)) 32 33 #define EFA_AENQ_ENABLED_GROUPS \ 34 (BIT(EFA_ADMIN_FATAL_ERROR) | BIT(EFA_ADMIN_WARNING) | \ 35 BIT(EFA_ADMIN_NOTIFICATION) | BIT(EFA_ADMIN_KEEP_ALIVE)) 36 37 /* This handler will called for unknown event group or unimplemented handlers */ 38 static void unimplemented_aenq_handler(void *data, 39 struct efa_admin_aenq_entry *aenq_e) 40 { 41 struct efa_dev *dev = (struct efa_dev *)data; 42 43 ibdev_err(&dev->ibdev, 44 "Unknown event was received or event with unimplemented handler\n"); 45 } 46 47 static void efa_keep_alive(void *data, struct efa_admin_aenq_entry *aenq_e) 48 { 49 struct efa_dev *dev = (struct efa_dev *)data; 50 51 atomic64_inc(&dev->stats.keep_alive_rcvd); 52 } 53 54 static struct efa_aenq_handlers aenq_handlers = { 55 .handlers = { 56 [EFA_ADMIN_KEEP_ALIVE] = efa_keep_alive, 57 }, 58 .unimplemented_handler = unimplemented_aenq_handler 59 }; 60 61 static void efa_release_bars(struct efa_dev *dev, int bars_mask) 62 { 63 struct pci_dev *pdev = dev->pdev; 64 int release_bars; 65 66 release_bars = pci_select_bars(pdev, IORESOURCE_MEM) & bars_mask; 67 pci_release_selected_regions(pdev, release_bars); 68 } 69 70 static void efa_process_comp_eqe(struct efa_dev *dev, struct efa_admin_eqe *eqe) 71 { 72 u16 cqn = eqe->u.comp_event.cqn; 73 struct efa_cq *cq; 74 75 /* Safe to load as we're in irq and removal calls synchronize_irq() */ 76 cq = xa_load(&dev->cqs_xa, cqn); 77 if (unlikely(!cq)) { 78 ibdev_err_ratelimited(&dev->ibdev, 79 "Completion event on non-existent CQ[%u]", 80 cqn); 81 return; 82 } 83 84 cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); 85 } 86 87 static void efa_process_eqe(struct efa_com_eq *eeq, struct efa_admin_eqe *eqe) 88 { 89 struct efa_dev *dev = container_of(eeq->edev, struct efa_dev, edev); 90 91 if (likely(EFA_GET(&eqe->common, EFA_ADMIN_EQE_EVENT_TYPE) == 92 EFA_ADMIN_EQE_EVENT_TYPE_COMPLETION)) 93 efa_process_comp_eqe(dev, eqe); 94 else 95 ibdev_err_ratelimited(&dev->ibdev, 96 "Unknown event type received %lu", 97 EFA_GET(&eqe->common, 98 EFA_ADMIN_EQE_EVENT_TYPE)); 99 } 100 101 static irqreturn_t efa_intr_msix_comp(int irq, void *data) 102 { 103 struct efa_eq *eq = data; 104 struct efa_com_dev *edev = eq->eeq.edev; 105 106 efa_com_eq_comp_intr_handler(edev, &eq->eeq); 107 108 return IRQ_HANDLED; 109 } 110 111 static irqreturn_t efa_intr_msix_mgmnt(int irq, void *data) 112 { 113 struct efa_dev *dev = data; 114 115 efa_com_admin_q_comp_intr_handler(&dev->edev); 116 efa_com_aenq_intr_handler(&dev->edev, data); 117 118 return IRQ_HANDLED; 119 } 120 121 static int efa_request_irq(struct efa_dev *dev, struct efa_irq *irq) 122 { 123 int err; 124 125 err = request_irq(irq->irqn, irq->handler, 0, irq->name, irq->data); 126 if (err) { 127 dev_err(&dev->pdev->dev, "Failed to request irq %s (%d)\n", 128 irq->name, err); 129 return err; 130 } 131 132 irq_set_affinity_hint(irq->irqn, &irq->affinity_hint_mask); 133 134 return 0; 135 } 136 137 static void efa_setup_comp_irq(struct efa_dev *dev, struct efa_eq *eq, 138 int vector) 139 { 140 u32 cpu; 141 142 cpu = vector - EFA_COMP_EQS_VEC_BASE; 143 snprintf(eq->irq.name, EFA_IRQNAME_SIZE, "efa-comp%d@pci:%s", cpu, 144 pci_name(dev->pdev)); 145 eq->irq.handler = efa_intr_msix_comp; 146 eq->irq.data = eq; 147 eq->irq.vector = vector; 148 eq->irq.irqn = pci_irq_vector(dev->pdev, vector); 149 cpumask_set_cpu(cpu, &eq->irq.affinity_hint_mask); 150 } 151 152 static void efa_free_irq(struct efa_dev *dev, struct efa_irq *irq) 153 { 154 irq_set_affinity_hint(irq->irqn, NULL); 155 free_irq(irq->irqn, irq->data); 156 } 157 158 static void efa_setup_mgmnt_irq(struct efa_dev *dev) 159 { 160 u32 cpu; 161 162 snprintf(dev->admin_irq.name, EFA_IRQNAME_SIZE, 163 "efa-mgmnt@pci:%s", pci_name(dev->pdev)); 164 dev->admin_irq.handler = efa_intr_msix_mgmnt; 165 dev->admin_irq.data = dev; 166 dev->admin_irq.vector = dev->admin_msix_vector_idx; 167 dev->admin_irq.irqn = pci_irq_vector(dev->pdev, 168 dev->admin_msix_vector_idx); 169 cpu = cpumask_first(cpu_online_mask); 170 cpumask_set_cpu(cpu, 171 &dev->admin_irq.affinity_hint_mask); 172 dev_info(&dev->pdev->dev, "Setup irq:%d name:%s\n", 173 dev->admin_irq.irqn, 174 dev->admin_irq.name); 175 } 176 177 static int efa_set_mgmnt_irq(struct efa_dev *dev) 178 { 179 efa_setup_mgmnt_irq(dev); 180 181 return efa_request_irq(dev, &dev->admin_irq); 182 } 183 184 static int efa_request_doorbell_bar(struct efa_dev *dev) 185 { 186 u8 db_bar_idx = dev->dev_attr.db_bar; 187 struct pci_dev *pdev = dev->pdev; 188 int bars; 189 int err; 190 191 if (!(BIT(db_bar_idx) & EFA_BASE_BAR_MASK)) { 192 bars = pci_select_bars(pdev, IORESOURCE_MEM) & BIT(db_bar_idx); 193 194 err = pci_request_selected_regions(pdev, bars, DRV_MODULE_NAME); 195 if (err) { 196 dev_err(&dev->pdev->dev, 197 "pci_request_selected_regions for bar %d failed %d\n", 198 db_bar_idx, err); 199 return err; 200 } 201 } 202 203 dev->db_bar_addr = pci_resource_start(dev->pdev, db_bar_idx); 204 dev->db_bar_len = pci_resource_len(dev->pdev, db_bar_idx); 205 206 return 0; 207 } 208 209 static void efa_release_doorbell_bar(struct efa_dev *dev) 210 { 211 if (!(BIT(dev->dev_attr.db_bar) & EFA_BASE_BAR_MASK)) 212 efa_release_bars(dev, BIT(dev->dev_attr.db_bar)); 213 } 214 215 static void efa_update_hw_hints(struct efa_dev *dev, 216 struct efa_com_get_hw_hints_result *hw_hints) 217 { 218 struct efa_com_dev *edev = &dev->edev; 219 220 if (hw_hints->mmio_read_timeout) 221 edev->mmio_read.mmio_read_timeout = 222 hw_hints->mmio_read_timeout * 1000; 223 224 if (hw_hints->poll_interval) 225 edev->aq.poll_interval = hw_hints->poll_interval; 226 227 if (hw_hints->admin_completion_timeout) 228 edev->aq.completion_timeout = 229 hw_hints->admin_completion_timeout; 230 } 231 232 static void efa_stats_init(struct efa_dev *dev) 233 { 234 atomic64_t *s = (atomic64_t *)&dev->stats; 235 int i; 236 237 for (i = 0; i < sizeof(dev->stats) / sizeof(*s); i++, s++) 238 atomic64_set(s, 0); 239 } 240 241 static void efa_set_host_info(struct efa_dev *dev) 242 { 243 struct efa_admin_set_feature_resp resp = {}; 244 struct efa_admin_set_feature_cmd cmd = {}; 245 struct efa_admin_host_info *hinf; 246 u32 bufsz = sizeof(*hinf); 247 dma_addr_t hinf_dma; 248 249 if (!efa_com_check_supported_feature_id(&dev->edev, 250 EFA_ADMIN_HOST_INFO)) 251 return; 252 253 /* Failures in host info set shall not disturb probe */ 254 hinf = dma_alloc_coherent(&dev->pdev->dev, bufsz, &hinf_dma, 255 GFP_KERNEL); 256 if (!hinf) 257 return; 258 259 strscpy(hinf->os_dist_str, utsname()->release, 260 sizeof(hinf->os_dist_str)); 261 hinf->os_type = EFA_ADMIN_OS_LINUX; 262 strscpy(hinf->kernel_ver_str, utsname()->version, 263 sizeof(hinf->kernel_ver_str)); 264 hinf->kernel_ver = LINUX_VERSION_CODE; 265 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MAJOR, 0); 266 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MINOR, 0); 267 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_SUB_MINOR, 0); 268 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MODULE_TYPE, 0); 269 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_BUS, dev->pdev->bus->number); 270 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_DEVICE, 271 PCI_SLOT(dev->pdev->devfn)); 272 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_FUNCTION, 273 PCI_FUNC(dev->pdev->devfn)); 274 EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MAJOR, 275 EFA_COMMON_SPEC_VERSION_MAJOR); 276 EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MINOR, 277 EFA_COMMON_SPEC_VERSION_MINOR); 278 EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_INTREE, 1); 279 EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_GDR, 0); 280 281 efa_com_set_feature_ex(&dev->edev, &resp, &cmd, EFA_ADMIN_HOST_INFO, 282 hinf_dma, bufsz); 283 284 dma_free_coherent(&dev->pdev->dev, bufsz, hinf, hinf_dma); 285 } 286 287 static void efa_destroy_eq(struct efa_dev *dev, struct efa_eq *eq) 288 { 289 efa_com_eq_destroy(&dev->edev, &eq->eeq); 290 efa_free_irq(dev, &eq->irq); 291 } 292 293 static int efa_create_eq(struct efa_dev *dev, struct efa_eq *eq, u8 msix_vec) 294 { 295 int err; 296 297 efa_setup_comp_irq(dev, eq, msix_vec); 298 err = efa_request_irq(dev, &eq->irq); 299 if (err) 300 return err; 301 302 err = efa_com_eq_init(&dev->edev, &eq->eeq, efa_process_eqe, 303 dev->dev_attr.max_eq_depth, msix_vec); 304 if (err) 305 goto err_free_comp_irq; 306 307 return 0; 308 309 err_free_comp_irq: 310 efa_free_irq(dev, &eq->irq); 311 return err; 312 } 313 314 static int efa_create_eqs(struct efa_dev *dev) 315 { 316 unsigned int neqs = dev->dev_attr.max_eq; 317 int err; 318 int i; 319 320 neqs = min_t(unsigned int, neqs, num_online_cpus()); 321 dev->neqs = neqs; 322 dev->eqs = kcalloc(neqs, sizeof(*dev->eqs), GFP_KERNEL); 323 if (!dev->eqs) 324 return -ENOMEM; 325 326 for (i = 0; i < neqs; i++) { 327 err = efa_create_eq(dev, &dev->eqs[i], 328 i + EFA_COMP_EQS_VEC_BASE); 329 if (err) 330 goto err_destroy_eqs; 331 } 332 333 return 0; 334 335 err_destroy_eqs: 336 for (i--; i >= 0; i--) 337 efa_destroy_eq(dev, &dev->eqs[i]); 338 kfree(dev->eqs); 339 340 return err; 341 } 342 343 static void efa_destroy_eqs(struct efa_dev *dev) 344 { 345 int i; 346 347 for (i = 0; i < dev->neqs; i++) 348 efa_destroy_eq(dev, &dev->eqs[i]); 349 350 kfree(dev->eqs); 351 } 352 353 static const struct ib_device_ops efa_dev_ops = { 354 .owner = THIS_MODULE, 355 .driver_id = RDMA_DRIVER_EFA, 356 .uverbs_abi_ver = EFA_UVERBS_ABI_VERSION, 357 358 .alloc_hw_port_stats = efa_alloc_hw_port_stats, 359 .alloc_hw_device_stats = efa_alloc_hw_device_stats, 360 .alloc_pd = efa_alloc_pd, 361 .alloc_ucontext = efa_alloc_ucontext, 362 .create_cq = efa_create_cq, 363 .create_qp = efa_create_qp, 364 .create_user_ah = efa_create_ah, 365 .dealloc_pd = efa_dealloc_pd, 366 .dealloc_ucontext = efa_dealloc_ucontext, 367 .dereg_mr = efa_dereg_mr, 368 .destroy_ah = efa_destroy_ah, 369 .destroy_cq = efa_destroy_cq, 370 .destroy_qp = efa_destroy_qp, 371 .get_hw_stats = efa_get_hw_stats, 372 .get_link_layer = efa_port_link_layer, 373 .get_port_immutable = efa_get_port_immutable, 374 .mmap = efa_mmap, 375 .mmap_free = efa_mmap_free, 376 .modify_qp = efa_modify_qp, 377 .query_device = efa_query_device, 378 .query_gid = efa_query_gid, 379 .query_pkey = efa_query_pkey, 380 .query_port = efa_query_port, 381 .query_qp = efa_query_qp, 382 .reg_user_mr = efa_reg_mr, 383 .reg_user_mr_dmabuf = efa_reg_user_mr_dmabuf, 384 385 INIT_RDMA_OBJ_SIZE(ib_ah, efa_ah, ibah), 386 INIT_RDMA_OBJ_SIZE(ib_cq, efa_cq, ibcq), 387 INIT_RDMA_OBJ_SIZE(ib_pd, efa_pd, ibpd), 388 INIT_RDMA_OBJ_SIZE(ib_qp, efa_qp, ibqp), 389 INIT_RDMA_OBJ_SIZE(ib_ucontext, efa_ucontext, ibucontext), 390 }; 391 392 static int efa_ib_device_add(struct efa_dev *dev) 393 { 394 struct efa_com_get_hw_hints_result hw_hints; 395 struct pci_dev *pdev = dev->pdev; 396 int err; 397 398 efa_stats_init(dev); 399 400 err = efa_com_get_device_attr(&dev->edev, &dev->dev_attr); 401 if (err) 402 return err; 403 404 dev_dbg(&dev->pdev->dev, "Doorbells bar (%d)\n", dev->dev_attr.db_bar); 405 err = efa_request_doorbell_bar(dev); 406 if (err) 407 return err; 408 409 err = efa_com_get_hw_hints(&dev->edev, &hw_hints); 410 if (err) 411 goto err_release_doorbell_bar; 412 413 efa_update_hw_hints(dev, &hw_hints); 414 415 /* Try to enable all the available aenq groups */ 416 err = efa_com_set_aenq_config(&dev->edev, EFA_AENQ_ENABLED_GROUPS); 417 if (err) 418 goto err_release_doorbell_bar; 419 420 err = efa_create_eqs(dev); 421 if (err) 422 goto err_release_doorbell_bar; 423 424 efa_set_host_info(dev); 425 426 dev->ibdev.node_type = RDMA_NODE_UNSPECIFIED; 427 dev->ibdev.phys_port_cnt = 1; 428 dev->ibdev.num_comp_vectors = dev->neqs ?: 1; 429 dev->ibdev.dev.parent = &pdev->dev; 430 431 ib_set_device_ops(&dev->ibdev, &efa_dev_ops); 432 433 err = ib_register_device(&dev->ibdev, "efa_%d", &pdev->dev); 434 if (err) 435 goto err_destroy_eqs; 436 437 ibdev_info(&dev->ibdev, "IB device registered\n"); 438 439 return 0; 440 441 err_destroy_eqs: 442 efa_destroy_eqs(dev); 443 err_release_doorbell_bar: 444 efa_release_doorbell_bar(dev); 445 return err; 446 } 447 448 static void efa_ib_device_remove(struct efa_dev *dev) 449 { 450 ibdev_info(&dev->ibdev, "Unregister ib device\n"); 451 ib_unregister_device(&dev->ibdev); 452 efa_destroy_eqs(dev); 453 efa_com_dev_reset(&dev->edev, EFA_REGS_RESET_NORMAL); 454 efa_release_doorbell_bar(dev); 455 } 456 457 static void efa_disable_msix(struct efa_dev *dev) 458 { 459 pci_free_irq_vectors(dev->pdev); 460 } 461 462 static int efa_enable_msix(struct efa_dev *dev) 463 { 464 int msix_vecs, irq_num; 465 466 /* 467 * Reserve the max msix vectors we might need, one vector is reserved 468 * for admin. 469 */ 470 msix_vecs = min_t(int, pci_msix_vec_count(dev->pdev), 471 num_online_cpus() + 1); 472 dev_dbg(&dev->pdev->dev, "Trying to enable MSI-X, vectors %d\n", 473 msix_vecs); 474 475 dev->admin_msix_vector_idx = EFA_MGMNT_MSIX_VEC_IDX; 476 irq_num = pci_alloc_irq_vectors(dev->pdev, msix_vecs, 477 msix_vecs, PCI_IRQ_MSIX); 478 479 if (irq_num < 0) { 480 dev_err(&dev->pdev->dev, "Failed to enable MSI-X. irq_num %d\n", 481 irq_num); 482 return -ENOSPC; 483 } 484 485 if (irq_num != msix_vecs) { 486 efa_disable_msix(dev); 487 dev_err(&dev->pdev->dev, 488 "Allocated %d MSI-X (out of %d requested)\n", 489 irq_num, msix_vecs); 490 return -ENOSPC; 491 } 492 493 return 0; 494 } 495 496 static int efa_device_init(struct efa_com_dev *edev, struct pci_dev *pdev) 497 { 498 int dma_width; 499 int err; 500 501 err = efa_com_dev_reset(edev, EFA_REGS_RESET_NORMAL); 502 if (err) 503 return err; 504 505 err = efa_com_validate_version(edev); 506 if (err) 507 return err; 508 509 dma_width = efa_com_get_dma_width(edev); 510 if (dma_width < 0) { 511 err = dma_width; 512 return err; 513 } 514 515 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(dma_width)); 516 if (err) { 517 dev_err(&pdev->dev, "dma_set_mask_and_coherent failed %d\n", err); 518 return err; 519 } 520 521 dma_set_max_seg_size(&pdev->dev, UINT_MAX); 522 return 0; 523 } 524 525 static struct efa_dev *efa_probe_device(struct pci_dev *pdev) 526 { 527 struct efa_com_dev *edev; 528 struct efa_dev *dev; 529 int bars; 530 int err; 531 532 err = pci_enable_device_mem(pdev); 533 if (err) { 534 dev_err(&pdev->dev, "pci_enable_device_mem() failed!\n"); 535 return ERR_PTR(err); 536 } 537 538 pci_set_master(pdev); 539 540 dev = ib_alloc_device(efa_dev, ibdev); 541 if (!dev) { 542 dev_err(&pdev->dev, "Device alloc failed\n"); 543 err = -ENOMEM; 544 goto err_disable_device; 545 } 546 547 pci_set_drvdata(pdev, dev); 548 edev = &dev->edev; 549 edev->efa_dev = dev; 550 edev->dmadev = &pdev->dev; 551 dev->pdev = pdev; 552 xa_init(&dev->cqs_xa); 553 554 bars = pci_select_bars(pdev, IORESOURCE_MEM) & EFA_BASE_BAR_MASK; 555 err = pci_request_selected_regions(pdev, bars, DRV_MODULE_NAME); 556 if (err) { 557 dev_err(&pdev->dev, "pci_request_selected_regions failed %d\n", 558 err); 559 goto err_ibdev_destroy; 560 } 561 562 dev->reg_bar_addr = pci_resource_start(pdev, EFA_REG_BAR); 563 dev->reg_bar_len = pci_resource_len(pdev, EFA_REG_BAR); 564 dev->mem_bar_addr = pci_resource_start(pdev, EFA_MEM_BAR); 565 dev->mem_bar_len = pci_resource_len(pdev, EFA_MEM_BAR); 566 567 edev->reg_bar = devm_ioremap(&pdev->dev, 568 dev->reg_bar_addr, 569 dev->reg_bar_len); 570 if (!edev->reg_bar) { 571 dev_err(&pdev->dev, "Failed to remap register bar\n"); 572 err = -EFAULT; 573 goto err_release_bars; 574 } 575 576 err = efa_com_mmio_reg_read_init(edev); 577 if (err) { 578 dev_err(&pdev->dev, "Failed to init readless MMIO\n"); 579 goto err_iounmap; 580 } 581 582 err = efa_device_init(edev, pdev); 583 if (err) { 584 dev_err(&pdev->dev, "EFA device init failed\n"); 585 if (err == -ETIME) 586 err = -EPROBE_DEFER; 587 goto err_reg_read_destroy; 588 } 589 590 err = efa_enable_msix(dev); 591 if (err) 592 goto err_reg_read_destroy; 593 594 edev->aq.msix_vector_idx = dev->admin_msix_vector_idx; 595 edev->aenq.msix_vector_idx = dev->admin_msix_vector_idx; 596 597 err = efa_set_mgmnt_irq(dev); 598 if (err) 599 goto err_disable_msix; 600 601 err = efa_com_admin_init(edev, &aenq_handlers); 602 if (err) 603 goto err_free_mgmnt_irq; 604 605 return dev; 606 607 err_free_mgmnt_irq: 608 efa_free_irq(dev, &dev->admin_irq); 609 err_disable_msix: 610 efa_disable_msix(dev); 611 err_reg_read_destroy: 612 efa_com_mmio_reg_read_destroy(edev); 613 err_iounmap: 614 devm_iounmap(&pdev->dev, edev->reg_bar); 615 err_release_bars: 616 efa_release_bars(dev, EFA_BASE_BAR_MASK); 617 err_ibdev_destroy: 618 ib_dealloc_device(&dev->ibdev); 619 err_disable_device: 620 pci_disable_device(pdev); 621 return ERR_PTR(err); 622 } 623 624 static void efa_remove_device(struct pci_dev *pdev) 625 { 626 struct efa_dev *dev = pci_get_drvdata(pdev); 627 struct efa_com_dev *edev; 628 629 edev = &dev->edev; 630 efa_com_admin_destroy(edev); 631 efa_free_irq(dev, &dev->admin_irq); 632 efa_disable_msix(dev); 633 efa_com_mmio_reg_read_destroy(edev); 634 devm_iounmap(&pdev->dev, edev->reg_bar); 635 efa_release_bars(dev, EFA_BASE_BAR_MASK); 636 xa_destroy(&dev->cqs_xa); 637 ib_dealloc_device(&dev->ibdev); 638 pci_disable_device(pdev); 639 } 640 641 static int efa_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 642 { 643 struct efa_dev *dev; 644 int err; 645 646 dev = efa_probe_device(pdev); 647 if (IS_ERR(dev)) 648 return PTR_ERR(dev); 649 650 err = efa_ib_device_add(dev); 651 if (err) 652 goto err_remove_device; 653 654 return 0; 655 656 err_remove_device: 657 efa_remove_device(pdev); 658 return err; 659 } 660 661 static void efa_remove(struct pci_dev *pdev) 662 { 663 struct efa_dev *dev = pci_get_drvdata(pdev); 664 665 efa_ib_device_remove(dev); 666 efa_remove_device(pdev); 667 } 668 669 static struct pci_driver efa_pci_driver = { 670 .name = DRV_MODULE_NAME, 671 .id_table = efa_pci_tbl, 672 .probe = efa_probe, 673 .remove = efa_remove, 674 }; 675 676 module_pci_driver(efa_pci_driver); 677