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