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
20static 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
27MODULE_AUTHOR("Amazon.com, Inc. or its affiliates");
28MODULE_LICENSE("Dual BSD/GPL");
29MODULE_DESCRIPTION(DEVICE_NAME);
30MODULE_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
40extern const struct uapi_definition efa_uapi_defs[];
41
42/* This handler will called for unknown event group or unimplemented handlers */
43static 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(ibdev: &dev->ibdev,
49 format: "Unknown event was received or event with unimplemented handler\n");
50}
51
52static 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(v: &dev->stats.keep_alive_rcvd);
57}
58
59static 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
66static 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(dev: pdev, IORESOURCE_MEM) & bars_mask;
72 pci_release_selected_regions(pdev, release_bars);
73}
74
75static 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, index: 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
92static 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
106static 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, eeq: &eq->eeq);
112
113 return IRQ_HANDLED;
114}
115
116static 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(edev: &dev->edev);
121 efa_com_aenq_intr_handler(edev: &dev->edev, data);
122
123 return IRQ_HANDLED;
124}
125
126static int efa_request_irq(struct efa_dev *dev, struct efa_irq *irq)
127{
128 int err;
129
130 err = request_irq(irq: irq->irqn, handler: irq->handler, flags: 0, name: irq->name, dev: 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: irq->irqn, m: &irq->affinity_hint_mask);
138
139 return 0;
140}
141
142static 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(buf: eq->irq.name, EFA_IRQNAME_SIZE, fmt: "efa-comp%d@pci:%s", cpu,
149 pci_name(pdev: 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: dev->pdev, nr: vector);
154 cpumask_set_cpu(cpu, dstp: &eq->irq.affinity_hint_mask);
155}
156
157static void efa_free_irq(struct efa_dev *dev, struct efa_irq *irq)
158{
159 irq_set_affinity_hint(irq: irq->irqn, NULL);
160 free_irq(irq->irqn, irq->data);
161}
162
163static void efa_setup_mgmnt_irq(struct efa_dev *dev)
164{
165 u32 cpu;
166
167 snprintf(buf: dev->admin_irq.name, EFA_IRQNAME_SIZE,
168 fmt: "efa-mgmnt@pci:%s", pci_name(pdev: 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: dev->pdev,
173 nr: dev->admin_msix_vector_idx);
174 cpu = cpumask_first(cpu_online_mask);
175 cpumask_set_cpu(cpu,
176 dstp: &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
182static int efa_set_mgmnt_irq(struct efa_dev *dev)
183{
184 efa_setup_mgmnt_irq(dev);
185
186 return efa_request_irq(dev, irq: &dev->admin_irq);
187}
188
189static 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(dev: 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
214static 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
220static 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
237static 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(v: s, i: 0);
244}
245
246static 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(edev: &dev->edev,
255 feature_id: EFA_ADMIN_HOST_INFO))
256 return;
257
258 /* Failures in host info set shall not disturb probe */
259 hinf = dma_alloc_coherent(dev: &dev->pdev->dev, size: bufsz, dma_handle: &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(edev: &dev->edev, set_resp: &resp, set_cmd: &cmd, feature_id: EFA_ADMIN_HOST_INFO,
287 control_buf_dma_addr: hinf_dma, control_buff_size: bufsz);
288
289 dma_free_coherent(dev: &dev->pdev->dev, size: bufsz, cpu_addr: hinf, dma_handle: hinf_dma);
290}
291
292static void efa_destroy_eq(struct efa_dev *dev, struct efa_eq *eq)
293{
294 efa_com_eq_destroy(edev: &dev->edev, eeq: &eq->eeq);
295 efa_free_irq(dev, irq: &eq->irq);
296}
297
298static 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, vector: msix_vec);
303 err = efa_request_irq(dev, irq: &eq->irq);
304 if (err)
305 return err;
306
307 err = efa_com_eq_init(edev: &dev->edev, eeq: &eq->eeq, cb: efa_process_eqe,
308 depth: dev->dev_attr.max_eq_depth, msix_vec);
309 if (err)
310 goto err_free_comp_irq;
311
312 return 0;
313
314err_free_comp_irq:
315 efa_free_irq(dev, irq: &eq->irq);
316 return err;
317}
318
319static 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(n: neqs, size: 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, eq: &dev->eqs[i],
335 msix_vec: i + EFA_COMP_EQS_VEC_BASE);
336 if (err)
337 goto err_destroy_eqs;
338 }
339
340 return 0;
341
342err_destroy_eqs:
343 for (i--; i >= 0; i--)
344 efa_destroy_eq(dev, eq: &dev->eqs[i]);
345 kfree(objp: dev->eqs);
346
347 return err;
348}
349
350static 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, eq: &dev->eqs[i]);
356
357 kfree(objp: dev->eqs);
358}
359
360static 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
399static 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(edev: &dev->edev, result: &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(edev: &dev->edev, result: &hw_hints);
417 if (err)
418 goto err_release_doorbell_bar;
419
420 efa_update_hw_hints(dev, hw_hints: &hw_hints);
421
422 /* Try to enable all the available aenq groups */
423 err = efa_com_set_aenq_config(edev: &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(device: &dev->ibdev, ops: &efa_dev_ops);
439
440 dev->ibdev.driver_def = efa_uapi_defs;
441
442 err = ib_register_device(device: &dev->ibdev, name: "efa_%d", dma_device: &pdev->dev);
443 if (err)
444 goto err_destroy_eqs;
445
446 ibdev_info(ibdev: &dev->ibdev, format: "IB device registered\n");
447
448 return 0;
449
450err_destroy_eqs:
451 efa_destroy_eqs(dev);
452err_release_doorbell_bar:
453 efa_release_doorbell_bar(dev);
454 return err;
455}
456
457static void efa_ib_device_remove(struct efa_dev *dev)
458{
459 ibdev_info(ibdev: &dev->ibdev, format: "Unregister ib device\n");
460 ib_unregister_device(device: &dev->ibdev);
461 efa_destroy_eqs(dev);
462 efa_com_dev_reset(edev: &dev->edev, reset_reason: EFA_REGS_RESET_NORMAL);
463 efa_release_doorbell_bar(dev);
464}
465
466static void efa_disable_msix(struct efa_dev *dev)
467{
468 pci_free_irq_vectors(dev: dev->pdev);
469}
470
471static 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: dev->pdev, min_vecs: 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
501static 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, reset_reason: 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(dev: &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(dev: &pdev->dev, UINT_MAX);
527 return 0;
528}
529
530static 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(dev: pdev);
538 if (err) {
539 dev_err(&pdev->dev, "pci_enable_device_mem() failed!\n");
540 return ERR_PTR(error: err);
541 }
542
543 pci_set_master(dev: 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, data: dev);
553 edev = &dev->edev;
554 edev->efa_dev = dev;
555 edev->dmadev = &pdev->dev;
556 dev->pdev = pdev;
557 xa_init(xa: &dev->cqs_xa);
558
559 bars = pci_select_bars(dev: 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(dev: &pdev->dev,
573 offset: dev->reg_bar_addr,
574 size: 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: &aenq_handlers);
607 if (err)
608 goto err_free_mgmnt_irq;
609
610 return dev;
611
612err_free_mgmnt_irq:
613 efa_free_irq(dev, irq: &dev->admin_irq);
614err_disable_msix:
615 efa_disable_msix(dev);
616err_reg_read_destroy:
617 efa_com_mmio_reg_read_destroy(edev);
618err_iounmap:
619 devm_iounmap(dev: &pdev->dev, addr: edev->reg_bar);
620err_release_bars:
621 efa_release_bars(dev, EFA_BASE_BAR_MASK);
622err_ibdev_destroy:
623 ib_dealloc_device(device: &dev->ibdev);
624err_disable_device:
625 pci_disable_device(dev: pdev);
626 return ERR_PTR(error: err);
627}
628
629static 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, irq: &dev->admin_irq);
637 efa_disable_msix(dev);
638 efa_com_mmio_reg_read_destroy(edev);
639 devm_iounmap(dev: &pdev->dev, addr: edev->reg_bar);
640 efa_release_bars(dev, EFA_BASE_BAR_MASK);
641 xa_destroy(&dev->cqs_xa);
642 ib_dealloc_device(device: &dev->ibdev);
643 pci_disable_device(dev: pdev);
644}
645
646static 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(ptr: dev))
653 return PTR_ERR(ptr: dev);
654
655 err = efa_ib_device_add(dev);
656 if (err)
657 goto err_remove_device;
658
659 return 0;
660
661err_remove_device:
662 efa_remove_device(pdev);
663 return err;
664}
665
666static 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
674static 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
681module_pci_driver(efa_pci_driver);
682

source code of linux/drivers/infiniband/hw/efa/efa_main.c