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Merge tag 'vfs-6.13-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
[J-linux.git] / drivers / infiniband / hw / efa / efa_main.c
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.node_guid = dev->dev_attr.guid;
445         dev->ibdev.phys_port_cnt = 1;
446         dev->ibdev.num_comp_vectors = dev->neqs ?: 1;
447         dev->ibdev.dev.parent = &pdev->dev;
448
449         ib_set_device_ops(&dev->ibdev, &efa_dev_ops);
450
451         dev->ibdev.driver_def = efa_uapi_defs;
452
453         err = ib_register_device(&dev->ibdev, "efa_%d", &pdev->dev);
454         if (err)
455                 goto err_destroy_eqs;
456
457         ibdev_info(&dev->ibdev, "IB device registered\n");
458
459         return 0;
460
461 err_destroy_eqs:
462         efa_destroy_eqs(dev);
463 err_release_doorbell_bar:
464         efa_release_doorbell_bar(dev);
465         return err;
466 }
467
468 static void efa_ib_device_remove(struct efa_dev *dev)
469 {
470         ibdev_info(&dev->ibdev, "Unregister ib device\n");
471         ib_unregister_device(&dev->ibdev);
472         efa_destroy_eqs(dev);
473         efa_com_dev_reset(&dev->edev, EFA_REGS_RESET_NORMAL);
474         efa_release_doorbell_bar(dev);
475 }
476
477 static void efa_disable_msix(struct efa_dev *dev)
478 {
479         pci_free_irq_vectors(dev->pdev);
480 }
481
482 static int efa_enable_msix(struct efa_dev *dev)
483 {
484         int max_vecs, num_vecs;
485
486         /*
487          * Reserve the max msix vectors we might need, one vector is reserved
488          * for admin.
489          */
490         max_vecs = min_t(int, pci_msix_vec_count(dev->pdev),
491                          num_online_cpus() + 1);
492         dev_dbg(&dev->pdev->dev, "Trying to enable MSI-X, vectors %d\n",
493                 max_vecs);
494
495         dev->admin_msix_vector_idx = EFA_MGMNT_MSIX_VEC_IDX;
496         num_vecs = pci_alloc_irq_vectors(dev->pdev, 1,
497                                          max_vecs, PCI_IRQ_MSIX);
498
499         if (num_vecs < 0) {
500                 dev_err(&dev->pdev->dev, "Failed to enable MSI-X. error %d\n",
501                         num_vecs);
502                 return -ENOSPC;
503         }
504
505         dev_dbg(&dev->pdev->dev, "Allocated %d MSI-X vectors\n", num_vecs);
506
507         dev->num_irq_vectors = num_vecs;
508
509         return 0;
510 }
511
512 static int efa_device_init(struct efa_com_dev *edev, struct pci_dev *pdev)
513 {
514         int dma_width;
515         int err;
516
517         err = efa_com_dev_reset(edev, EFA_REGS_RESET_NORMAL);
518         if (err)
519                 return err;
520
521         err = efa_com_validate_version(edev);
522         if (err)
523                 return err;
524
525         dma_width = efa_com_get_dma_width(edev);
526         if (dma_width < 0) {
527                 err = dma_width;
528                 return err;
529         }
530
531         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(dma_width));
532         if (err) {
533                 dev_err(&pdev->dev, "dma_set_mask_and_coherent failed %d\n", err);
534                 return err;
535         }
536
537         dma_set_max_seg_size(&pdev->dev, UINT_MAX);
538         return 0;
539 }
540
541 static struct efa_dev *efa_probe_device(struct pci_dev *pdev)
542 {
543         struct efa_com_dev *edev;
544         struct efa_dev *dev;
545         int pci_mem_bars;
546         int err;
547
548         err = pci_enable_device_mem(pdev);
549         if (err) {
550                 dev_err(&pdev->dev, "pci_enable_device_mem() failed!\n");
551                 return ERR_PTR(err);
552         }
553
554         pci_set_master(pdev);
555
556         dev = ib_alloc_device(efa_dev, ibdev);
557         if (!dev) {
558                 dev_err(&pdev->dev, "Device alloc failed\n");
559                 err = -ENOMEM;
560                 goto err_disable_device;
561         }
562
563         pci_set_drvdata(pdev, dev);
564         edev = &dev->edev;
565         edev->efa_dev = dev;
566         edev->dmadev = &pdev->dev;
567         dev->pdev = pdev;
568         xa_init(&dev->cqs_xa);
569
570         pci_mem_bars = pci_select_bars(pdev, IORESOURCE_MEM);
571         if (EFA_BASE_BAR_MASK & ~pci_mem_bars) {
572                 dev_err(&pdev->dev, "BARs unavailable. Requested %#x, available %#x\n",
573                         (int)EFA_BASE_BAR_MASK, pci_mem_bars);
574                 err = -ENODEV;
575                 goto err_ibdev_destroy;
576         }
577         err = pci_request_selected_regions(pdev, EFA_BASE_BAR_MASK, DRV_MODULE_NAME);
578         if (err) {
579                 dev_err(&pdev->dev, "pci_request_selected_regions failed %d\n",
580                         err);
581                 goto err_ibdev_destroy;
582         }
583
584         dev->reg_bar_addr = pci_resource_start(pdev, EFA_REG_BAR);
585         dev->reg_bar_len = pci_resource_len(pdev, EFA_REG_BAR);
586         dev->mem_bar_addr = pci_resource_start(pdev, EFA_MEM_BAR);
587         dev->mem_bar_len = pci_resource_len(pdev, EFA_MEM_BAR);
588
589         edev->reg_bar = devm_ioremap(&pdev->dev,
590                                      dev->reg_bar_addr,
591                                      dev->reg_bar_len);
592         if (!edev->reg_bar) {
593                 dev_err(&pdev->dev, "Failed to remap register bar\n");
594                 err = -EFAULT;
595                 goto err_release_bars;
596         }
597
598         err = efa_com_mmio_reg_read_init(edev);
599         if (err) {
600                 dev_err(&pdev->dev, "Failed to init readless MMIO\n");
601                 goto err_iounmap;
602         }
603
604         err = efa_device_init(edev, pdev);
605         if (err) {
606                 dev_err(&pdev->dev, "EFA device init failed\n");
607                 if (err == -ETIME)
608                         err = -EPROBE_DEFER;
609                 goto err_reg_read_destroy;
610         }
611
612         err = efa_enable_msix(dev);
613         if (err)
614                 goto err_reg_read_destroy;
615
616         edev->aq.msix_vector_idx = dev->admin_msix_vector_idx;
617         edev->aenq.msix_vector_idx = dev->admin_msix_vector_idx;
618
619         err = efa_set_mgmnt_irq(dev);
620         if (err)
621                 goto err_disable_msix;
622
623         err = efa_com_admin_init(edev, &aenq_handlers);
624         if (err)
625                 goto err_free_mgmnt_irq;
626
627         return dev;
628
629 err_free_mgmnt_irq:
630         efa_free_irq(dev, &dev->admin_irq);
631 err_disable_msix:
632         efa_disable_msix(dev);
633 err_reg_read_destroy:
634         efa_com_mmio_reg_read_destroy(edev);
635 err_iounmap:
636         devm_iounmap(&pdev->dev, edev->reg_bar);
637 err_release_bars:
638         efa_release_bars(dev, EFA_BASE_BAR_MASK);
639 err_ibdev_destroy:
640         ib_dealloc_device(&dev->ibdev);
641 err_disable_device:
642         pci_disable_device(pdev);
643         return ERR_PTR(err);
644 }
645
646 static void efa_remove_device(struct pci_dev *pdev)
647 {
648         struct efa_dev *dev = pci_get_drvdata(pdev);
649         struct efa_com_dev *edev;
650
651         edev = &dev->edev;
652         efa_com_admin_destroy(edev);
653         efa_free_irq(dev, &dev->admin_irq);
654         efa_disable_msix(dev);
655         efa_com_mmio_reg_read_destroy(edev);
656         devm_iounmap(&pdev->dev, edev->reg_bar);
657         efa_release_bars(dev, EFA_BASE_BAR_MASK);
658         xa_destroy(&dev->cqs_xa);
659         ib_dealloc_device(&dev->ibdev);
660         pci_disable_device(pdev);
661 }
662
663 static int efa_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
664 {
665         struct efa_dev *dev;
666         int err;
667
668         dev = efa_probe_device(pdev);
669         if (IS_ERR(dev))
670                 return PTR_ERR(dev);
671
672         err = efa_ib_device_add(dev);
673         if (err)
674                 goto err_remove_device;
675
676         return 0;
677
678 err_remove_device:
679         efa_remove_device(pdev);
680         return err;
681 }
682
683 static void efa_remove(struct pci_dev *pdev)
684 {
685         struct efa_dev *dev = pci_get_drvdata(pdev);
686
687         efa_ib_device_remove(dev);
688         efa_remove_device(pdev);
689 }
690
691 static void efa_shutdown(struct pci_dev *pdev)
692 {
693         struct efa_dev *dev = pci_get_drvdata(pdev);
694
695         efa_destroy_eqs(dev);
696         efa_com_dev_reset(&dev->edev, EFA_REGS_RESET_SHUTDOWN);
697         efa_free_irq(dev, &dev->admin_irq);
698         efa_disable_msix(dev);
699 }
700
701 static struct pci_driver efa_pci_driver = {
702         .name           = DRV_MODULE_NAME,
703         .id_table       = efa_pci_tbl,
704         .probe          = efa_probe,
705         .remove         = efa_remove,
706         .shutdown       = efa_shutdown,
707 };
708
709 module_pci_driver(efa_pci_driver);
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