xref: /linux/drivers/infiniband/hw/erdma/erdma_main.c (revision 27879e8cb6b0fdb5cdcd76685f290729309711c6)
1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 
3 /* Authors: Cheng Xu <chengyou@linux.alibaba.com> */
4 /*          Kai Shen <kaishen@linux.alibaba.com> */
5 /* Copyright (c) 2020-2022, Alibaba Group. */
6 
7 #include <linux/module.h>
8 #include <net/addrconf.h>
9 #include <rdma/erdma-abi.h>
10 
11 #include "erdma.h"
12 #include "erdma_cm.h"
13 #include "erdma_verbs.h"
14 
15 MODULE_AUTHOR("Cheng Xu <chengyou@linux.alibaba.com>");
16 MODULE_DESCRIPTION("Alibaba elasticRDMA adapter driver");
17 MODULE_LICENSE("Dual BSD/GPL");
18 
19 static int erdma_netdev_event(struct notifier_block *nb, unsigned long event,
20 			      void *arg)
21 {
22 	struct net_device *netdev = netdev_notifier_info_to_dev(arg);
23 	struct erdma_dev *dev = container_of(nb, struct erdma_dev, netdev_nb);
24 
25 	if (dev->netdev == NULL || dev->netdev != netdev)
26 		goto done;
27 
28 	switch (event) {
29 	case NETDEV_UP:
30 		dev->state = IB_PORT_ACTIVE;
31 		erdma_port_event(dev, IB_EVENT_PORT_ACTIVE);
32 		break;
33 	case NETDEV_DOWN:
34 		dev->state = IB_PORT_DOWN;
35 		erdma_port_event(dev, IB_EVENT_PORT_ERR);
36 		break;
37 	case NETDEV_CHANGEMTU:
38 		if (dev->mtu != netdev->mtu) {
39 			erdma_set_mtu(dev, netdev->mtu);
40 			dev->mtu = netdev->mtu;
41 		}
42 		break;
43 	case NETDEV_REGISTER:
44 	case NETDEV_UNREGISTER:
45 	case NETDEV_CHANGEADDR:
46 	case NETDEV_GOING_DOWN:
47 	case NETDEV_CHANGE:
48 	default:
49 		break;
50 	}
51 
52 done:
53 	return NOTIFY_OK;
54 }
55 
56 static int erdma_enum_and_get_netdev(struct erdma_dev *dev)
57 {
58 	struct net_device *netdev;
59 	int ret = -EPROBE_DEFER;
60 
61 	/* Already binded to a net_device, so we skip. */
62 	if (dev->netdev)
63 		return 0;
64 
65 	rtnl_lock();
66 	for_each_netdev(&init_net, netdev) {
67 		/*
68 		 * In erdma, the paired netdev and ibdev should have the same
69 		 * MAC address. erdma can get the value from its PCIe bar
70 		 * registers. Since erdma can not get the paired netdev
71 		 * reference directly, we do a traverse here to get the paired
72 		 * netdev.
73 		 */
74 		if (ether_addr_equal_unaligned(netdev->perm_addr,
75 					       dev->attrs.peer_addr)) {
76 			ret = ib_device_set_netdev(&dev->ibdev, netdev, 1);
77 			if (ret) {
78 				rtnl_unlock();
79 				ibdev_warn(&dev->ibdev,
80 					   "failed (%d) to link netdev", ret);
81 				return ret;
82 			}
83 
84 			dev->netdev = netdev;
85 			break;
86 		}
87 	}
88 
89 	rtnl_unlock();
90 
91 	return ret;
92 }
93 
94 static int erdma_device_register(struct erdma_dev *dev)
95 {
96 	struct ib_device *ibdev = &dev->ibdev;
97 	int ret;
98 
99 	ret = erdma_enum_and_get_netdev(dev);
100 	if (ret)
101 		return ret;
102 
103 	dev->mtu = dev->netdev->mtu;
104 	addrconf_addr_eui48((u8 *)&ibdev->node_guid, dev->netdev->dev_addr);
105 
106 	ret = ib_register_device(ibdev, "erdma_%d", &dev->pdev->dev);
107 	if (ret) {
108 		dev_err(&dev->pdev->dev,
109 			"ib_register_device failed: ret = %d\n", ret);
110 		return ret;
111 	}
112 
113 	dev->netdev_nb.notifier_call = erdma_netdev_event;
114 	ret = register_netdevice_notifier(&dev->netdev_nb);
115 	if (ret) {
116 		ibdev_err(&dev->ibdev, "failed to register notifier.\n");
117 		ib_unregister_device(ibdev);
118 	}
119 
120 	return ret;
121 }
122 
123 static irqreturn_t erdma_comm_irq_handler(int irq, void *data)
124 {
125 	struct erdma_dev *dev = data;
126 
127 	erdma_cmdq_completion_handler(&dev->cmdq);
128 	erdma_aeq_event_handler(dev);
129 
130 	return IRQ_HANDLED;
131 }
132 
133 static int erdma_request_vectors(struct erdma_dev *dev)
134 {
135 	int expect_irq_num = min(num_possible_cpus() + 1, ERDMA_NUM_MSIX_VEC);
136 	int ret;
137 
138 	ret = pci_alloc_irq_vectors(dev->pdev, 1, expect_irq_num, PCI_IRQ_MSIX);
139 	if (ret < 0) {
140 		dev_err(&dev->pdev->dev, "request irq vectors failed(%d)\n",
141 			ret);
142 		return ret;
143 	}
144 	dev->attrs.irq_num = ret;
145 
146 	return 0;
147 }
148 
149 static int erdma_comm_irq_init(struct erdma_dev *dev)
150 {
151 	snprintf(dev->comm_irq.name, ERDMA_IRQNAME_SIZE, "erdma-common@pci:%s",
152 		 pci_name(dev->pdev));
153 	dev->comm_irq.msix_vector =
154 		pci_irq_vector(dev->pdev, ERDMA_MSIX_VECTOR_CMDQ);
155 
156 	cpumask_set_cpu(cpumask_first(cpumask_of_pcibus(dev->pdev->bus)),
157 			&dev->comm_irq.affinity_hint_mask);
158 	irq_set_affinity_hint(dev->comm_irq.msix_vector,
159 			      &dev->comm_irq.affinity_hint_mask);
160 
161 	return request_irq(dev->comm_irq.msix_vector, erdma_comm_irq_handler, 0,
162 			   dev->comm_irq.name, dev);
163 }
164 
165 static void erdma_comm_irq_uninit(struct erdma_dev *dev)
166 {
167 	irq_set_affinity_hint(dev->comm_irq.msix_vector, NULL);
168 	free_irq(dev->comm_irq.msix_vector, dev);
169 }
170 
171 static int erdma_device_init(struct erdma_dev *dev, struct pci_dev *pdev)
172 {
173 	int ret;
174 
175 	dev->resp_pool = dma_pool_create("erdma_resp_pool", &pdev->dev,
176 					 ERDMA_HW_RESP_SIZE, ERDMA_HW_RESP_SIZE,
177 					 0);
178 	if (!dev->resp_pool)
179 		return -ENOMEM;
180 
181 	dev->db_pool = dma_pool_create("erdma_db_pool", &pdev->dev,
182 				       ERDMA_DB_SIZE, ERDMA_DB_SIZE, 0);
183 	if (!dev->db_pool) {
184 		ret = -ENOMEM;
185 		goto destroy_resp_pool;
186 	}
187 
188 	ret = dma_set_mask_and_coherent(&pdev->dev,
189 					DMA_BIT_MASK(ERDMA_PCI_WIDTH));
190 	if (ret)
191 		goto destroy_db_pool;
192 
193 	dma_set_max_seg_size(&pdev->dev, UINT_MAX);
194 
195 	return 0;
196 
197 destroy_db_pool:
198 	dma_pool_destroy(dev->db_pool);
199 
200 destroy_resp_pool:
201 	dma_pool_destroy(dev->resp_pool);
202 
203 	return ret;
204 }
205 
206 static void erdma_device_uninit(struct erdma_dev *dev)
207 {
208 	dma_pool_destroy(dev->db_pool);
209 	dma_pool_destroy(dev->resp_pool);
210 }
211 
212 static void erdma_hw_reset(struct erdma_dev *dev)
213 {
214 	u32 ctrl = FIELD_PREP(ERDMA_REG_DEV_CTRL_RESET_MASK, 1);
215 
216 	erdma_reg_write32(dev, ERDMA_REGS_DEV_CTRL_REG, ctrl);
217 }
218 
219 static int erdma_wait_hw_init_done(struct erdma_dev *dev)
220 {
221 	int i;
222 
223 	erdma_reg_write32(dev, ERDMA_REGS_DEV_CTRL_REG,
224 			  FIELD_PREP(ERDMA_REG_DEV_CTRL_INIT_MASK, 1));
225 
226 	for (i = 0; i < ERDMA_WAIT_DEV_DONE_CNT; i++) {
227 		if (erdma_reg_read32_filed(dev, ERDMA_REGS_DEV_ST_REG,
228 					   ERDMA_REG_DEV_ST_INIT_DONE_MASK))
229 			break;
230 
231 		msleep(ERDMA_REG_ACCESS_WAIT_MS);
232 	}
233 
234 	if (i == ERDMA_WAIT_DEV_DONE_CNT) {
235 		dev_err(&dev->pdev->dev, "wait init done failed.\n");
236 		return -ETIMEDOUT;
237 	}
238 
239 	return 0;
240 }
241 
242 static const struct pci_device_id erdma_pci_tbl[] = {
243 	{ PCI_DEVICE(PCI_VENDOR_ID_ALIBABA, 0x107f) },
244 	{}
245 };
246 
247 static int erdma_probe_dev(struct pci_dev *pdev)
248 {
249 	struct erdma_dev *dev;
250 	int bars, err;
251 	u32 version;
252 
253 	err = pci_enable_device(pdev);
254 	if (err) {
255 		dev_err(&pdev->dev, "pci_enable_device failed(%d)\n", err);
256 		return err;
257 	}
258 
259 	pci_set_master(pdev);
260 
261 	dev = ib_alloc_device(erdma_dev, ibdev);
262 	if (!dev) {
263 		dev_err(&pdev->dev, "ib_alloc_device failed\n");
264 		err = -ENOMEM;
265 		goto err_disable_device;
266 	}
267 
268 	pci_set_drvdata(pdev, dev);
269 	dev->pdev = pdev;
270 	dev->attrs.numa_node = dev_to_node(&pdev->dev);
271 
272 	bars = pci_select_bars(pdev, IORESOURCE_MEM);
273 	err = pci_request_selected_regions(pdev, bars, DRV_MODULE_NAME);
274 	if (bars != ERDMA_BAR_MASK || err) {
275 		err = err ? err : -EINVAL;
276 		goto err_ib_device_release;
277 	}
278 
279 	dev->func_bar_addr = pci_resource_start(pdev, ERDMA_FUNC_BAR);
280 	dev->func_bar_len = pci_resource_len(pdev, ERDMA_FUNC_BAR);
281 
282 	dev->func_bar =
283 		devm_ioremap(&pdev->dev, dev->func_bar_addr, dev->func_bar_len);
284 	if (!dev->func_bar) {
285 		dev_err(&pdev->dev, "devm_ioremap failed.\n");
286 		err = -EFAULT;
287 		goto err_release_bars;
288 	}
289 
290 	version = erdma_reg_read32(dev, ERDMA_REGS_VERSION_REG);
291 	if (version == 0) {
292 		/* we knows that it is a non-functional function. */
293 		err = -ENODEV;
294 		goto err_iounmap_func_bar;
295 	}
296 
297 	err = erdma_device_init(dev, pdev);
298 	if (err)
299 		goto err_iounmap_func_bar;
300 
301 	err = erdma_request_vectors(dev);
302 	if (err)
303 		goto err_uninit_device;
304 
305 	err = erdma_comm_irq_init(dev);
306 	if (err)
307 		goto err_free_vectors;
308 
309 	err = erdma_aeq_init(dev);
310 	if (err)
311 		goto err_uninit_comm_irq;
312 
313 	err = erdma_cmdq_init(dev);
314 	if (err)
315 		goto err_uninit_aeq;
316 
317 	err = erdma_wait_hw_init_done(dev);
318 	if (err)
319 		goto err_uninit_cmdq;
320 
321 	err = erdma_ceqs_init(dev);
322 	if (err)
323 		goto err_reset_hw;
324 
325 	erdma_finish_cmdq_init(dev);
326 
327 	return 0;
328 
329 err_reset_hw:
330 	erdma_hw_reset(dev);
331 
332 err_uninit_cmdq:
333 	erdma_cmdq_destroy(dev);
334 
335 err_uninit_aeq:
336 	erdma_eq_destroy(dev, &dev->aeq);
337 
338 err_uninit_comm_irq:
339 	erdma_comm_irq_uninit(dev);
340 
341 err_free_vectors:
342 	pci_free_irq_vectors(dev->pdev);
343 
344 err_uninit_device:
345 	erdma_device_uninit(dev);
346 
347 err_iounmap_func_bar:
348 	devm_iounmap(&pdev->dev, dev->func_bar);
349 
350 err_release_bars:
351 	pci_release_selected_regions(pdev, bars);
352 
353 err_ib_device_release:
354 	ib_dealloc_device(&dev->ibdev);
355 
356 err_disable_device:
357 	pci_disable_device(pdev);
358 
359 	return err;
360 }
361 
362 static void erdma_remove_dev(struct pci_dev *pdev)
363 {
364 	struct erdma_dev *dev = pci_get_drvdata(pdev);
365 
366 	erdma_ceqs_uninit(dev);
367 	erdma_hw_reset(dev);
368 	erdma_cmdq_destroy(dev);
369 	erdma_eq_destroy(dev, &dev->aeq);
370 	erdma_comm_irq_uninit(dev);
371 	pci_free_irq_vectors(dev->pdev);
372 	erdma_device_uninit(dev);
373 
374 	devm_iounmap(&pdev->dev, dev->func_bar);
375 	pci_release_selected_regions(pdev, ERDMA_BAR_MASK);
376 
377 	ib_dealloc_device(&dev->ibdev);
378 
379 	pci_disable_device(pdev);
380 }
381 
382 #define ERDMA_GET_CAP(name, cap) FIELD_GET(ERDMA_CMD_DEV_CAP_##name##_MASK, cap)
383 
384 static int erdma_dev_attrs_init(struct erdma_dev *dev)
385 {
386 	int err;
387 	u64 req_hdr, cap0, cap1;
388 
389 	erdma_cmdq_build_reqhdr(&req_hdr, CMDQ_SUBMOD_RDMA,
390 				CMDQ_OPCODE_QUERY_DEVICE);
391 
392 	err = erdma_post_cmd_wait(&dev->cmdq, &req_hdr, sizeof(req_hdr), &cap0,
393 				  &cap1);
394 	if (err)
395 		return err;
396 
397 	dev->attrs.max_cqe = 1 << ERDMA_GET_CAP(MAX_CQE, cap0);
398 	dev->attrs.max_mr_size = 1ULL << ERDMA_GET_CAP(MAX_MR_SIZE, cap0);
399 	dev->attrs.max_mw = 1 << ERDMA_GET_CAP(MAX_MW, cap1);
400 	dev->attrs.max_recv_wr = 1 << ERDMA_GET_CAP(MAX_RECV_WR, cap0);
401 	dev->attrs.local_dma_key = ERDMA_GET_CAP(DMA_LOCAL_KEY, cap1);
402 	dev->attrs.cc = ERDMA_GET_CAP(DEFAULT_CC, cap1);
403 	dev->attrs.max_qp = ERDMA_NQP_PER_QBLOCK * ERDMA_GET_CAP(QBLOCK, cap1);
404 	dev->attrs.max_mr = dev->attrs.max_qp << 1;
405 	dev->attrs.max_cq = dev->attrs.max_qp << 1;
406 	dev->attrs.cap_flags = ERDMA_GET_CAP(FLAGS, cap0);
407 
408 	dev->attrs.max_send_wr = ERDMA_MAX_SEND_WR;
409 	dev->attrs.max_ord = ERDMA_MAX_ORD;
410 	dev->attrs.max_ird = ERDMA_MAX_IRD;
411 	dev->attrs.max_send_sge = ERDMA_MAX_SEND_SGE;
412 	dev->attrs.max_recv_sge = ERDMA_MAX_RECV_SGE;
413 	dev->attrs.max_sge_rd = ERDMA_MAX_SGE_RD;
414 	dev->attrs.max_pd = ERDMA_MAX_PD;
415 
416 	dev->res_cb[ERDMA_RES_TYPE_PD].max_cap = ERDMA_MAX_PD;
417 	dev->res_cb[ERDMA_RES_TYPE_STAG_IDX].max_cap = dev->attrs.max_mr;
418 
419 	erdma_cmdq_build_reqhdr(&req_hdr, CMDQ_SUBMOD_COMMON,
420 				CMDQ_OPCODE_QUERY_FW_INFO);
421 
422 	err = erdma_post_cmd_wait(&dev->cmdq, &req_hdr, sizeof(req_hdr), &cap0,
423 				  &cap1);
424 	if (!err)
425 		dev->attrs.fw_version =
426 			FIELD_GET(ERDMA_CMD_INFO0_FW_VER_MASK, cap0);
427 
428 	return err;
429 }
430 
431 static int erdma_device_config(struct erdma_dev *dev)
432 {
433 	struct erdma_cmdq_config_device_req req = {};
434 
435 	if (!(dev->attrs.cap_flags & ERDMA_DEV_CAP_FLAGS_EXTEND_DB))
436 		return 0;
437 
438 	erdma_cmdq_build_reqhdr(&req.hdr, CMDQ_SUBMOD_COMMON,
439 				CMDQ_OPCODE_CONF_DEVICE);
440 
441 	req.cfg = FIELD_PREP(ERDMA_CMD_CONFIG_DEVICE_PGSHIFT_MASK, PAGE_SHIFT) |
442 		  FIELD_PREP(ERDMA_CMD_CONFIG_DEVICE_PS_EN_MASK, 1);
443 
444 	return erdma_post_cmd_wait(&dev->cmdq, &req, sizeof(req), NULL, NULL);
445 }
446 
447 static int erdma_res_cb_init(struct erdma_dev *dev)
448 {
449 	int i, j;
450 
451 	for (i = 0; i < ERDMA_RES_CNT; i++) {
452 		dev->res_cb[i].next_alloc_idx = 1;
453 		spin_lock_init(&dev->res_cb[i].lock);
454 		dev->res_cb[i].bitmap =
455 			bitmap_zalloc(dev->res_cb[i].max_cap, GFP_KERNEL);
456 		if (!dev->res_cb[i].bitmap)
457 			goto err;
458 	}
459 
460 	return 0;
461 
462 err:
463 	for (j = 0; j < i; j++)
464 		bitmap_free(dev->res_cb[j].bitmap);
465 
466 	return -ENOMEM;
467 }
468 
469 static void erdma_res_cb_free(struct erdma_dev *dev)
470 {
471 	int i;
472 
473 	for (i = 0; i < ERDMA_RES_CNT; i++)
474 		bitmap_free(dev->res_cb[i].bitmap);
475 }
476 
477 static const struct ib_device_ops erdma_device_ops = {
478 	.owner = THIS_MODULE,
479 	.driver_id = RDMA_DRIVER_ERDMA,
480 	.uverbs_abi_ver = ERDMA_ABI_VERSION,
481 
482 	.alloc_hw_port_stats = erdma_alloc_hw_port_stats,
483 	.alloc_mr = erdma_ib_alloc_mr,
484 	.alloc_pd = erdma_alloc_pd,
485 	.alloc_ucontext = erdma_alloc_ucontext,
486 	.create_cq = erdma_create_cq,
487 	.create_qp = erdma_create_qp,
488 	.dealloc_pd = erdma_dealloc_pd,
489 	.dealloc_ucontext = erdma_dealloc_ucontext,
490 	.dereg_mr = erdma_dereg_mr,
491 	.destroy_cq = erdma_destroy_cq,
492 	.destroy_qp = erdma_destroy_qp,
493 	.disassociate_ucontext = erdma_disassociate_ucontext,
494 	.get_dma_mr = erdma_get_dma_mr,
495 	.get_hw_stats = erdma_get_hw_stats,
496 	.get_port_immutable = erdma_get_port_immutable,
497 	.iw_accept = erdma_accept,
498 	.iw_add_ref = erdma_qp_get_ref,
499 	.iw_connect = erdma_connect,
500 	.iw_create_listen = erdma_create_listen,
501 	.iw_destroy_listen = erdma_destroy_listen,
502 	.iw_get_qp = erdma_get_ibqp,
503 	.iw_reject = erdma_reject,
504 	.iw_rem_ref = erdma_qp_put_ref,
505 	.map_mr_sg = erdma_map_mr_sg,
506 	.mmap = erdma_mmap,
507 	.mmap_free = erdma_mmap_free,
508 	.modify_qp = erdma_modify_qp,
509 	.post_recv = erdma_post_recv,
510 	.post_send = erdma_post_send,
511 	.poll_cq = erdma_poll_cq,
512 	.query_device = erdma_query_device,
513 	.query_gid = erdma_query_gid,
514 	.query_port = erdma_query_port,
515 	.query_qp = erdma_query_qp,
516 	.req_notify_cq = erdma_req_notify_cq,
517 	.reg_user_mr = erdma_reg_user_mr,
518 
519 	INIT_RDMA_OBJ_SIZE(ib_cq, erdma_cq, ibcq),
520 	INIT_RDMA_OBJ_SIZE(ib_pd, erdma_pd, ibpd),
521 	INIT_RDMA_OBJ_SIZE(ib_ucontext, erdma_ucontext, ibucontext),
522 	INIT_RDMA_OBJ_SIZE(ib_qp, erdma_qp, ibqp),
523 };
524 
525 static int erdma_ib_device_add(struct pci_dev *pdev)
526 {
527 	struct erdma_dev *dev = pci_get_drvdata(pdev);
528 	struct ib_device *ibdev = &dev->ibdev;
529 	u64 mac;
530 	int ret;
531 
532 	ret = erdma_dev_attrs_init(dev);
533 	if (ret)
534 		return ret;
535 
536 	ret = erdma_device_config(dev);
537 	if (ret)
538 		return ret;
539 
540 	ibdev->node_type = RDMA_NODE_RNIC;
541 	memcpy(ibdev->node_desc, ERDMA_NODE_DESC, sizeof(ERDMA_NODE_DESC));
542 
543 	/*
544 	 * Current model (one-to-one device association):
545 	 * One ERDMA device per net_device or, equivalently,
546 	 * per physical port.
547 	 */
548 	ibdev->phys_port_cnt = 1;
549 	ibdev->num_comp_vectors = dev->attrs.irq_num - 1;
550 
551 	ib_set_device_ops(ibdev, &erdma_device_ops);
552 
553 	INIT_LIST_HEAD(&dev->cep_list);
554 
555 	spin_lock_init(&dev->lock);
556 	xa_init_flags(&dev->qp_xa, XA_FLAGS_ALLOC1);
557 	xa_init_flags(&dev->cq_xa, XA_FLAGS_ALLOC1);
558 	dev->next_alloc_cqn = 1;
559 	dev->next_alloc_qpn = 1;
560 
561 	ret = erdma_res_cb_init(dev);
562 	if (ret)
563 		return ret;
564 
565 	atomic_set(&dev->num_ctx, 0);
566 
567 	mac = erdma_reg_read32(dev, ERDMA_REGS_NETDEV_MAC_L_REG);
568 	mac |= (u64)erdma_reg_read32(dev, ERDMA_REGS_NETDEV_MAC_H_REG) << 32;
569 
570 	u64_to_ether_addr(mac, dev->attrs.peer_addr);
571 
572 	dev->reflush_wq = alloc_workqueue("erdma-reflush-wq", WQ_UNBOUND,
573 					  WQ_UNBOUND_MAX_ACTIVE);
574 	if (!dev->reflush_wq) {
575 		ret = -ENOMEM;
576 		goto err_alloc_workqueue;
577 	}
578 
579 	ret = erdma_device_register(dev);
580 	if (ret)
581 		goto err_register;
582 
583 	return 0;
584 
585 err_register:
586 	destroy_workqueue(dev->reflush_wq);
587 err_alloc_workqueue:
588 	xa_destroy(&dev->qp_xa);
589 	xa_destroy(&dev->cq_xa);
590 
591 	erdma_res_cb_free(dev);
592 
593 	return ret;
594 }
595 
596 static void erdma_ib_device_remove(struct pci_dev *pdev)
597 {
598 	struct erdma_dev *dev = pci_get_drvdata(pdev);
599 
600 	unregister_netdevice_notifier(&dev->netdev_nb);
601 	ib_unregister_device(&dev->ibdev);
602 
603 	destroy_workqueue(dev->reflush_wq);
604 	erdma_res_cb_free(dev);
605 	xa_destroy(&dev->qp_xa);
606 	xa_destroy(&dev->cq_xa);
607 }
608 
609 static int erdma_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
610 {
611 	int ret;
612 
613 	ret = erdma_probe_dev(pdev);
614 	if (ret)
615 		return ret;
616 
617 	ret = erdma_ib_device_add(pdev);
618 	if (ret) {
619 		erdma_remove_dev(pdev);
620 		return ret;
621 	}
622 
623 	return 0;
624 }
625 
626 static void erdma_remove(struct pci_dev *pdev)
627 {
628 	erdma_ib_device_remove(pdev);
629 	erdma_remove_dev(pdev);
630 }
631 
632 static struct pci_driver erdma_pci_driver = {
633 	.name = DRV_MODULE_NAME,
634 	.id_table = erdma_pci_tbl,
635 	.probe = erdma_probe,
636 	.remove = erdma_remove
637 };
638 
639 MODULE_DEVICE_TABLE(pci, erdma_pci_tbl);
640 
641 static __init int erdma_init_module(void)
642 {
643 	int ret;
644 
645 	ret = erdma_cm_init();
646 	if (ret)
647 		return ret;
648 
649 	ret = pci_register_driver(&erdma_pci_driver);
650 	if (ret)
651 		erdma_cm_exit();
652 
653 	return ret;
654 }
655 
656 static void __exit erdma_exit_module(void)
657 {
658 	pci_unregister_driver(&erdma_pci_driver);
659 
660 	erdma_cm_exit();
661 }
662 
663 module_init(erdma_init_module);
664 module_exit(erdma_exit_module);
665