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 #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, 145 int vector) 146 { 147 u32 cpu; 148 149 cpu = vector - EFA_COMP_EQS_VEC_BASE; 150 snprintf(eq->irq.name, EFA_IRQNAME_SIZE, "efa-comp%d@pci:%s", cpu, 151 pci_name(dev->pdev)); 152 eq->irq.handler = efa_intr_msix_comp; 153 eq->irq.data = eq; 154 eq->irq.vector = vector; 155 eq->irq.irqn = pci_irq_vector(dev->pdev, vector); 156 cpumask_set_cpu(cpu, &eq->irq.affinity_hint_mask); 157 } 158 159 static void efa_free_irq(struct efa_dev *dev, struct efa_irq *irq) 160 { 161 irq_set_affinity_hint(irq->irqn, NULL); 162 free_irq(irq->irqn, irq->data); 163 } 164 165 static void efa_setup_mgmnt_irq(struct efa_dev *dev) 166 { 167 u32 cpu; 168 169 snprintf(dev->admin_irq.name, EFA_IRQNAME_SIZE, 170 "efa-mgmnt@pci:%s", pci_name(dev->pdev)); 171 dev->admin_irq.handler = efa_intr_msix_mgmnt; 172 dev->admin_irq.data = dev; 173 dev->admin_irq.vector = dev->admin_msix_vector_idx; 174 dev->admin_irq.irqn = pci_irq_vector(dev->pdev, 175 dev->admin_msix_vector_idx); 176 cpu = cpumask_first(cpu_online_mask); 177 cpumask_set_cpu(cpu, 178 &dev->admin_irq.affinity_hint_mask); 179 dev_info(&dev->pdev->dev, "Setup irq:%d name:%s\n", 180 dev->admin_irq.irqn, 181 dev->admin_irq.name); 182 } 183 184 static int efa_set_mgmnt_irq(struct efa_dev *dev) 185 { 186 efa_setup_mgmnt_irq(dev); 187 188 return efa_request_irq(dev, &dev->admin_irq); 189 } 190 191 static int efa_request_doorbell_bar(struct efa_dev *dev) 192 { 193 u8 db_bar_idx = dev->dev_attr.db_bar; 194 struct pci_dev *pdev = dev->pdev; 195 int pci_mem_bars; 196 int db_bar; 197 int err; 198 199 db_bar = BIT(db_bar_idx); 200 if (!(db_bar & EFA_BASE_BAR_MASK)) { 201 pci_mem_bars = pci_select_bars(pdev, IORESOURCE_MEM); 202 if (db_bar & ~pci_mem_bars) { 203 dev_err(&pdev->dev, 204 "Doorbells BAR unavailable. Requested %#x, available %#x\n", 205 db_bar, pci_mem_bars); 206 return -ENODEV; 207 } 208 209 err = pci_request_selected_regions(pdev, db_bar, DRV_MODULE_NAME); 210 if (err) { 211 dev_err(&pdev->dev, 212 "pci_request_selected_regions for bar %d failed %d\n", 213 db_bar_idx, err); 214 return err; 215 } 216 } 217 218 dev->db_bar_addr = pci_resource_start(dev->pdev, db_bar_idx); 219 dev->db_bar_len = pci_resource_len(dev->pdev, db_bar_idx); 220 221 return 0; 222 } 223 224 static void efa_release_doorbell_bar(struct efa_dev *dev) 225 { 226 if (!(BIT(dev->dev_attr.db_bar) & EFA_BASE_BAR_MASK)) 227 efa_release_bars(dev, BIT(dev->dev_attr.db_bar)); 228 } 229 230 static void efa_update_hw_hints(struct efa_dev *dev, 231 struct efa_com_get_hw_hints_result *hw_hints) 232 { 233 struct efa_com_dev *edev = &dev->edev; 234 235 if (hw_hints->mmio_read_timeout) 236 edev->mmio_read.mmio_read_timeout = 237 hw_hints->mmio_read_timeout * 1000; 238 239 if (hw_hints->poll_interval) 240 edev->aq.poll_interval = hw_hints->poll_interval; 241 242 if (hw_hints->admin_completion_timeout) 243 edev->aq.completion_timeout = 244 hw_hints->admin_completion_timeout; 245 } 246 247 static void efa_stats_init(struct efa_dev *dev) 248 { 249 atomic64_t *s = (atomic64_t *)&dev->stats; 250 int i; 251 252 for (i = 0; i < sizeof(dev->stats) / sizeof(*s); i++, s++) 253 atomic64_set(s, 0); 254 } 255 256 static void efa_set_host_info(struct efa_dev *dev) 257 { 258 struct efa_admin_set_feature_resp resp = {}; 259 struct efa_admin_set_feature_cmd cmd = {}; 260 struct efa_admin_host_info *hinf; 261 u32 bufsz = sizeof(*hinf); 262 dma_addr_t hinf_dma; 263 264 if (!efa_com_check_supported_feature_id(&dev->edev, 265 EFA_ADMIN_HOST_INFO)) 266 return; 267 268 /* Failures in host info set shall not disturb probe */ 269 hinf = dma_alloc_coherent(&dev->pdev->dev, bufsz, &hinf_dma, 270 GFP_KERNEL); 271 if (!hinf) 272 return; 273 274 strscpy(hinf->os_dist_str, utsname()->release, 275 sizeof(hinf->os_dist_str)); 276 hinf->os_type = EFA_ADMIN_OS_LINUX; 277 strscpy(hinf->kernel_ver_str, utsname()->version, 278 sizeof(hinf->kernel_ver_str)); 279 hinf->kernel_ver = LINUX_VERSION_CODE; 280 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MAJOR, 0); 281 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MINOR, 0); 282 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_SUB_MINOR, 0); 283 EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MODULE_TYPE, 0); 284 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_BUS, dev->pdev->bus->number); 285 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_DEVICE, 286 PCI_SLOT(dev->pdev->devfn)); 287 EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_FUNCTION, 288 PCI_FUNC(dev->pdev->devfn)); 289 EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MAJOR, 290 EFA_COMMON_SPEC_VERSION_MAJOR); 291 EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MINOR, 292 EFA_COMMON_SPEC_VERSION_MINOR); 293 EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_INTREE, 1); 294 EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_GDR, 0); 295 296 efa_com_set_feature_ex(&dev->edev, &resp, &cmd, EFA_ADMIN_HOST_INFO, 297 hinf_dma, bufsz); 298 299 dma_free_coherent(&dev->pdev->dev, bufsz, hinf, hinf_dma); 300 } 301 302 static void efa_destroy_eq(struct efa_dev *dev, struct efa_eq *eq) 303 { 304 efa_com_eq_destroy(&dev->edev, &eq->eeq); 305 efa_free_irq(dev, &eq->irq); 306 } 307 308 static int efa_create_eq(struct efa_dev *dev, struct efa_eq *eq, u8 msix_vec) 309 { 310 int err; 311 312 efa_setup_comp_irq(dev, eq, msix_vec); 313 err = efa_request_irq(dev, &eq->irq); 314 if (err) 315 return err; 316 317 err = efa_com_eq_init(&dev->edev, &eq->eeq, efa_process_eqe, 318 dev->dev_attr.max_eq_depth, msix_vec); 319 if (err) 320 goto err_free_comp_irq; 321 322 return 0; 323 324 err_free_comp_irq: 325 efa_free_irq(dev, &eq->irq); 326 return err; 327 } 328 329 static int efa_create_eqs(struct efa_dev *dev) 330 { 331 unsigned int neqs = dev->dev_attr.max_eq; 332 int err; 333 int i; 334 335 neqs = min_t(unsigned int, neqs, 336 dev->num_irq_vectors - EFA_COMP_EQS_VEC_BASE); 337 338 dev->neqs = neqs; 339 dev->eqs = kcalloc(neqs, sizeof(*dev->eqs), GFP_KERNEL); 340 if (!dev->eqs) 341 return -ENOMEM; 342 343 for (i = 0; i < neqs; i++) { 344 err = efa_create_eq(dev, &dev->eqs[i], 345 i + EFA_COMP_EQS_VEC_BASE); 346 if (err) 347 goto err_destroy_eqs; 348 } 349 350 return 0; 351 352 err_destroy_eqs: 353 for (i--; i >= 0; i--) 354 efa_destroy_eq(dev, &dev->eqs[i]); 355 kfree(dev->eqs); 356 357 return err; 358 } 359 360 static void efa_destroy_eqs(struct efa_dev *dev) 361 { 362 int i; 363 364 for (i = 0; i < dev->neqs; i++) 365 efa_destroy_eq(dev, &dev->eqs[i]); 366 367 kfree(dev->eqs); 368 } 369 370 static const struct ib_device_ops efa_dev_ops = { 371 .owner = THIS_MODULE, 372 .driver_id = RDMA_DRIVER_EFA, 373 .uverbs_abi_ver = EFA_UVERBS_ABI_VERSION, 374 375 .alloc_hw_port_stats = efa_alloc_hw_port_stats, 376 .alloc_hw_device_stats = efa_alloc_hw_device_stats, 377 .alloc_pd = efa_alloc_pd, 378 .alloc_ucontext = efa_alloc_ucontext, 379 .create_cq = efa_create_cq, 380 .create_qp = efa_create_qp, 381 .create_user_ah = efa_create_ah, 382 .dealloc_pd = efa_dealloc_pd, 383 .dealloc_ucontext = efa_dealloc_ucontext, 384 .dereg_mr = efa_dereg_mr, 385 .destroy_ah = efa_destroy_ah, 386 .destroy_cq = efa_destroy_cq, 387 .destroy_qp = efa_destroy_qp, 388 .get_hw_stats = efa_get_hw_stats, 389 .get_link_layer = efa_port_link_layer, 390 .get_port_immutable = efa_get_port_immutable, 391 .mmap = efa_mmap, 392 .mmap_free = efa_mmap_free, 393 .modify_qp = efa_modify_qp, 394 .query_device = efa_query_device, 395 .query_gid = efa_query_gid, 396 .query_pkey = efa_query_pkey, 397 .query_port = efa_query_port, 398 .query_qp = efa_query_qp, 399 .reg_user_mr = efa_reg_mr, 400 .reg_user_mr_dmabuf = efa_reg_user_mr_dmabuf, 401 402 INIT_RDMA_OBJ_SIZE(ib_ah, efa_ah, ibah), 403 INIT_RDMA_OBJ_SIZE(ib_cq, efa_cq, ibcq), 404 INIT_RDMA_OBJ_SIZE(ib_pd, efa_pd, ibpd), 405 INIT_RDMA_OBJ_SIZE(ib_qp, efa_qp, ibqp), 406 INIT_RDMA_OBJ_SIZE(ib_ucontext, efa_ucontext, ibucontext), 407 }; 408 409 static int efa_ib_device_add(struct efa_dev *dev) 410 { 411 struct efa_com_get_hw_hints_result hw_hints; 412 struct pci_dev *pdev = dev->pdev; 413 int err; 414 415 efa_stats_init(dev); 416 417 err = efa_com_get_device_attr(&dev->edev, &dev->dev_attr); 418 if (err) 419 return err; 420 421 dev_dbg(&dev->pdev->dev, "Doorbells bar (%d)\n", dev->dev_attr.db_bar); 422 err = efa_request_doorbell_bar(dev); 423 if (err) 424 return err; 425 426 err = efa_com_get_hw_hints(&dev->edev, &hw_hints); 427 if (err) 428 goto err_release_doorbell_bar; 429 430 efa_update_hw_hints(dev, &hw_hints); 431 432 /* Try to enable all the available aenq groups */ 433 err = efa_com_set_aenq_config(&dev->edev, EFA_AENQ_ENABLED_GROUPS); 434 if (err) 435 goto err_release_doorbell_bar; 436 437 err = efa_create_eqs(dev); 438 if (err) 439 goto err_release_doorbell_bar; 440 441 efa_set_host_info(dev); 442 443 dev->ibdev.node_type = RDMA_NODE_UNSPECIFIED; 444 dev->ibdev.phys_port_cnt = 1; 445 dev->ibdev.num_comp_vectors = dev->neqs ?: 1; 446 dev->ibdev.dev.parent = &pdev->dev; 447 448 ib_set_device_ops(&dev->ibdev, &efa_dev_ops); 449 450 dev->ibdev.driver_def = efa_uapi_defs; 451 452 err = ib_register_device(&dev->ibdev, "efa_%d", &pdev->dev); 453 if (err) 454 goto err_destroy_eqs; 455 456 ibdev_info(&dev->ibdev, "IB device registered\n"); 457 458 return 0; 459 460 err_destroy_eqs: 461 efa_destroy_eqs(dev); 462 err_release_doorbell_bar: 463 efa_release_doorbell_bar(dev); 464 return err; 465 } 466 467 static void efa_ib_device_remove(struct efa_dev *dev) 468 { 469 ibdev_info(&dev->ibdev, "Unregister ib device\n"); 470 ib_unregister_device(&dev->ibdev); 471 efa_destroy_eqs(dev); 472 efa_com_dev_reset(&dev->edev, EFA_REGS_RESET_NORMAL); 473 efa_release_doorbell_bar(dev); 474 } 475 476 static void efa_disable_msix(struct efa_dev *dev) 477 { 478 pci_free_irq_vectors(dev->pdev); 479 } 480 481 static int efa_enable_msix(struct efa_dev *dev) 482 { 483 int max_vecs, num_vecs; 484 485 /* 486 * Reserve the max msix vectors we might need, one vector is reserved 487 * for admin. 488 */ 489 max_vecs = min_t(int, pci_msix_vec_count(dev->pdev), 490 num_online_cpus() + 1); 491 dev_dbg(&dev->pdev->dev, "Trying to enable MSI-X, vectors %d\n", 492 max_vecs); 493 494 dev->admin_msix_vector_idx = EFA_MGMNT_MSIX_VEC_IDX; 495 num_vecs = pci_alloc_irq_vectors(dev->pdev, 1, 496 max_vecs, PCI_IRQ_MSIX); 497 498 if (num_vecs < 0) { 499 dev_err(&dev->pdev->dev, "Failed to enable MSI-X. error %d\n", 500 num_vecs); 501 return -ENOSPC; 502 } 503 504 dev_dbg(&dev->pdev->dev, "Allocated %d MSI-X vectors\n", num_vecs); 505 506 dev->num_irq_vectors = num_vecs; 507 508 return 0; 509 } 510 511 static int efa_device_init(struct efa_com_dev *edev, struct pci_dev *pdev) 512 { 513 int dma_width; 514 int err; 515 516 err = efa_com_dev_reset(edev, EFA_REGS_RESET_NORMAL); 517 if (err) 518 return err; 519 520 err = efa_com_validate_version(edev); 521 if (err) 522 return err; 523 524 dma_width = efa_com_get_dma_width(edev); 525 if (dma_width < 0) { 526 err = dma_width; 527 return err; 528 } 529 530 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(dma_width)); 531 if (err) { 532 dev_err(&pdev->dev, "dma_set_mask_and_coherent failed %d\n", err); 533 return err; 534 } 535 536 dma_set_max_seg_size(&pdev->dev, UINT_MAX); 537 return 0; 538 } 539 540 static struct efa_dev *efa_probe_device(struct pci_dev *pdev) 541 { 542 struct efa_com_dev *edev; 543 struct efa_dev *dev; 544 int pci_mem_bars; 545 int err; 546 547 err = pci_enable_device_mem(pdev); 548 if (err) { 549 dev_err(&pdev->dev, "pci_enable_device_mem() failed!\n"); 550 return ERR_PTR(err); 551 } 552 553 pci_set_master(pdev); 554 555 dev = ib_alloc_device(efa_dev, ibdev); 556 if (!dev) { 557 dev_err(&pdev->dev, "Device alloc failed\n"); 558 err = -ENOMEM; 559 goto err_disable_device; 560 } 561 562 pci_set_drvdata(pdev, dev); 563 edev = &dev->edev; 564 edev->efa_dev = dev; 565 edev->dmadev = &pdev->dev; 566 dev->pdev = pdev; 567 xa_init(&dev->cqs_xa); 568 569 pci_mem_bars = pci_select_bars(pdev, IORESOURCE_MEM); 570 if (EFA_BASE_BAR_MASK & ~pci_mem_bars) { 571 dev_err(&pdev->dev, "BARs unavailable. Requested %#x, available %#x\n", 572 (int)EFA_BASE_BAR_MASK, pci_mem_bars); 573 err = -ENODEV; 574 goto err_ibdev_destroy; 575 } 576 err = pci_request_selected_regions(pdev, EFA_BASE_BAR_MASK, DRV_MODULE_NAME); 577 if (err) { 578 dev_err(&pdev->dev, "pci_request_selected_regions failed %d\n", 579 err); 580 goto err_ibdev_destroy; 581 } 582 583 dev->reg_bar_addr = pci_resource_start(pdev, EFA_REG_BAR); 584 dev->reg_bar_len = pci_resource_len(pdev, EFA_REG_BAR); 585 dev->mem_bar_addr = pci_resource_start(pdev, EFA_MEM_BAR); 586 dev->mem_bar_len = pci_resource_len(pdev, EFA_MEM_BAR); 587 588 edev->reg_bar = devm_ioremap(&pdev->dev, 589 dev->reg_bar_addr, 590 dev->reg_bar_len); 591 if (!edev->reg_bar) { 592 dev_err(&pdev->dev, "Failed to remap register bar\n"); 593 err = -EFAULT; 594 goto err_release_bars; 595 } 596 597 err = efa_com_mmio_reg_read_init(edev); 598 if (err) { 599 dev_err(&pdev->dev, "Failed to init readless MMIO\n"); 600 goto err_iounmap; 601 } 602 603 err = efa_device_init(edev, pdev); 604 if (err) { 605 dev_err(&pdev->dev, "EFA device init failed\n"); 606 if (err == -ETIME) 607 err = -EPROBE_DEFER; 608 goto err_reg_read_destroy; 609 } 610 611 err = efa_enable_msix(dev); 612 if (err) 613 goto err_reg_read_destroy; 614 615 edev->aq.msix_vector_idx = dev->admin_msix_vector_idx; 616 edev->aenq.msix_vector_idx = dev->admin_msix_vector_idx; 617 618 err = efa_set_mgmnt_irq(dev); 619 if (err) 620 goto err_disable_msix; 621 622 err = efa_com_admin_init(edev, &aenq_handlers); 623 if (err) 624 goto err_free_mgmnt_irq; 625 626 return dev; 627 628 err_free_mgmnt_irq: 629 efa_free_irq(dev, &dev->admin_irq); 630 err_disable_msix: 631 efa_disable_msix(dev); 632 err_reg_read_destroy: 633 efa_com_mmio_reg_read_destroy(edev); 634 err_iounmap: 635 devm_iounmap(&pdev->dev, edev->reg_bar); 636 err_release_bars: 637 efa_release_bars(dev, EFA_BASE_BAR_MASK); 638 err_ibdev_destroy: 639 ib_dealloc_device(&dev->ibdev); 640 err_disable_device: 641 pci_disable_device(pdev); 642 return ERR_PTR(err); 643 } 644 645 static void efa_remove_device(struct pci_dev *pdev) 646 { 647 struct efa_dev *dev = pci_get_drvdata(pdev); 648 struct efa_com_dev *edev; 649 650 edev = &dev->edev; 651 efa_com_admin_destroy(edev); 652 efa_free_irq(dev, &dev->admin_irq); 653 efa_disable_msix(dev); 654 efa_com_mmio_reg_read_destroy(edev); 655 devm_iounmap(&pdev->dev, edev->reg_bar); 656 efa_release_bars(dev, EFA_BASE_BAR_MASK); 657 xa_destroy(&dev->cqs_xa); 658 ib_dealloc_device(&dev->ibdev); 659 pci_disable_device(pdev); 660 } 661 662 static int efa_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 663 { 664 struct efa_dev *dev; 665 int err; 666 667 dev = efa_probe_device(pdev); 668 if (IS_ERR(dev)) 669 return PTR_ERR(dev); 670 671 err = efa_ib_device_add(dev); 672 if (err) 673 goto err_remove_device; 674 675 return 0; 676 677 err_remove_device: 678 efa_remove_device(pdev); 679 return err; 680 } 681 682 static void efa_remove(struct pci_dev *pdev) 683 { 684 struct efa_dev *dev = pci_get_drvdata(pdev); 685 686 efa_ib_device_remove(dev); 687 efa_remove_device(pdev); 688 } 689 690 static void efa_shutdown(struct pci_dev *pdev) 691 { 692 struct efa_dev *dev = pci_get_drvdata(pdev); 693 694 efa_destroy_eqs(dev); 695 efa_com_dev_reset(&dev->edev, EFA_REGS_RESET_SHUTDOWN); 696 efa_free_irq(dev, &dev->admin_irq); 697 efa_disable_msix(dev); 698 } 699 700 static struct pci_driver efa_pci_driver = { 701 .name = DRV_MODULE_NAME, 702 .id_table = efa_pci_tbl, 703 .probe = efa_probe, 704 .remove = efa_remove, 705 .shutdown = efa_shutdown, 706 }; 707 708 module_pci_driver(efa_pci_driver); 709