summaryrefslogtreecommitdiffstats
path: root/drivers/infiniband/hw/hns/hns_roce_main.c
blob: c3b41f95e70a5f1c39e89d91e48653fc05e2b20a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
/*
 * Copyright (c) 2016 Hisilicon Limited.
 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
#include <linux/acpi.h>
#include <linux/of_platform.h>
#include <linux/module.h>
#include <rdma/ib_addr.h>
#include <rdma/ib_smi.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_cache.h>
#include "hns_roce_common.h"
#include "hns_roce_device.h"
#include <rdma/hns-abi.h>
#include "hns_roce_hem.h"

/**
 * hns_get_gid_index - Get gid index.
 * @hr_dev: pointer to structure hns_roce_dev.
 * @port:  port, value range: 0 ~ MAX
 * @gid_index:  gid_index, value range: 0 ~ MAX
 * Description:
 *    N ports shared gids, allocation method as follow:
 *		GID[0][0], GID[1][0],.....GID[N - 1][0],
 *		GID[0][0], GID[1][0],.....GID[N - 1][0],
 *		And so on
 */
int hns_get_gid_index(struct hns_roce_dev *hr_dev, u8 port, int gid_index)
{
	return gid_index * hr_dev->caps.num_ports + port;
}

static void hns_roce_set_mac(struct hns_roce_dev *hr_dev, u8 port, u8 *addr)
{
	u8 phy_port;
	u32 i = 0;

	if (!memcmp(hr_dev->dev_addr[port], addr, MAC_ADDR_OCTET_NUM))
		return;

	for (i = 0; i < MAC_ADDR_OCTET_NUM; i++)
		hr_dev->dev_addr[port][i] = addr[i];

	phy_port = hr_dev->iboe.phy_port[port];
	hr_dev->hw->set_mac(hr_dev, phy_port, addr);
}

static int hns_roce_add_gid(struct ib_device *device, u8 port_num,
			    unsigned int index, const union ib_gid *gid,
			    const struct ib_gid_attr *attr, void **context)
{
	struct hns_roce_dev *hr_dev = to_hr_dev(device);
	u8 port = port_num - 1;
	unsigned long flags;

	if (port >= hr_dev->caps.num_ports)
		return -EINVAL;

	spin_lock_irqsave(&hr_dev->iboe.lock, flags);

	hr_dev->hw->set_gid(hr_dev, port, index, (union ib_gid *)gid);

	spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);

	return 0;
}

static int hns_roce_del_gid(struct ib_device *device, u8 port_num,
			    unsigned int index, void **context)
{
	struct hns_roce_dev *hr_dev = to_hr_dev(device);
	union ib_gid zgid = { {0} };
	u8 port = port_num - 1;
	unsigned long flags;

	if (port >= hr_dev->caps.num_ports)
		return -EINVAL;

	spin_lock_irqsave(&hr_dev->iboe.lock, flags);

	hr_dev->hw->set_gid(hr_dev, port, index, &zgid);

	spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);

	return 0;
}

static int handle_en_event(struct hns_roce_dev *hr_dev, u8 port,
			   unsigned long event)
{
	struct device *dev = &hr_dev->pdev->dev;
	struct net_device *netdev;

	netdev = hr_dev->iboe.netdevs[port];
	if (!netdev) {
		dev_err(dev, "port(%d) can't find netdev\n", port);
		return -ENODEV;
	}

	spin_lock_bh(&hr_dev->iboe.lock);

	switch (event) {
	case NETDEV_UP:
	case NETDEV_CHANGE:
	case NETDEV_REGISTER:
	case NETDEV_CHANGEADDR:
		hns_roce_set_mac(hr_dev, port, netdev->dev_addr);
		break;
	case NETDEV_DOWN:
		/*
		 * In v1 engine, only support all ports closed together.
		 */
		break;
	default:
		dev_dbg(dev, "NETDEV event = 0x%x!\n", (u32)(event));
		break;
	}

	spin_unlock_bh(&hr_dev->iboe.lock);
	return 0;
}

static int hns_roce_netdev_event(struct notifier_block *self,
				 unsigned long event, void *ptr)
{
	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
	struct hns_roce_ib_iboe *iboe = NULL;
	struct hns_roce_dev *hr_dev = NULL;
	u8 port = 0;
	int ret = 0;

	hr_dev = container_of(self, struct hns_roce_dev, iboe.nb);
	iboe = &hr_dev->iboe;

	for (port = 0; port < hr_dev->caps.num_ports; port++) {
		if (dev == iboe->netdevs[port]) {
			ret = handle_en_event(hr_dev, port, event);
			if (ret)
				return NOTIFY_DONE;
			break;
		}
	}

	return NOTIFY_DONE;
}

static int hns_roce_setup_mtu_mac(struct hns_roce_dev *hr_dev)
{
	u8 i;

	for (i = 0; i < hr_dev->caps.num_ports; i++) {
		hr_dev->hw->set_mtu(hr_dev, hr_dev->iboe.phy_port[i],
				    hr_dev->caps.max_mtu);
		hns_roce_set_mac(hr_dev, i, hr_dev->iboe.netdevs[i]->dev_addr);
	}

	return 0;
}

static int hns_roce_query_device(struct ib_device *ib_dev,
				 struct ib_device_attr *props,
				 struct ib_udata *uhw)
{
	struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);

	memset(props, 0, sizeof(*props));

	props->sys_image_guid = hr_dev->sys_image_guid;
	props->max_mr_size = (u64)(~(0ULL));
	props->page_size_cap = hr_dev->caps.page_size_cap;
	props->vendor_id = hr_dev->vendor_id;
	props->vendor_part_id = hr_dev->vendor_part_id;
	props->hw_ver = hr_dev->hw_rev;
	props->max_qp = hr_dev->caps.num_qps;
	props->max_qp_wr = hr_dev->caps.max_wqes;
	props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT |
				  IB_DEVICE_RC_RNR_NAK_GEN;
	props->max_sge = hr_dev->caps.max_sq_sg;
	props->max_sge_rd = 1;
	props->max_cq = hr_dev->caps.num_cqs;
	props->max_cqe = hr_dev->caps.max_cqes;
	props->max_mr = hr_dev->caps.num_mtpts;
	props->max_pd = hr_dev->caps.num_pds;
	props->max_qp_rd_atom = hr_dev->caps.max_qp_dest_rdma;
	props->max_qp_init_rd_atom = hr_dev->caps.max_qp_init_rdma;
	props->atomic_cap = IB_ATOMIC_NONE;
	props->max_pkeys = 1;
	props->local_ca_ack_delay = hr_dev->caps.local_ca_ack_delay;

	return 0;
}

static struct net_device *hns_roce_get_netdev(struct ib_device *ib_dev,
					      u8 port_num)
{
	struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
	struct net_device *ndev;

	if (port_num < 1 || port_num > hr_dev->caps.num_ports)
		return NULL;

	rcu_read_lock();

	ndev = hr_dev->iboe.netdevs[port_num - 1];
	if (ndev)
		dev_hold(ndev);

	rcu_read_unlock();
	return ndev;
}

static int hns_roce_query_port(struct ib_device *ib_dev, u8 port_num,
			       struct ib_port_attr *props)
{
	struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
	struct device *dev = &hr_dev->pdev->dev;
	struct net_device *net_dev;
	unsigned long flags;
	enum ib_mtu mtu;
	u8 port;

	assert(port_num > 0);
	port = port_num - 1;

	/* props being zeroed by the caller, avoid zeroing it here */

	props->max_mtu = hr_dev->caps.max_mtu;
	props->gid_tbl_len = hr_dev->caps.gid_table_len[port];
	props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
				IB_PORT_VENDOR_CLASS_SUP |
				IB_PORT_BOOT_MGMT_SUP;
	props->max_msg_sz = HNS_ROCE_MAX_MSG_LEN;
	props->pkey_tbl_len = 1;
	props->active_width = IB_WIDTH_4X;
	props->active_speed = 1;

	spin_lock_irqsave(&hr_dev->iboe.lock, flags);

	net_dev = hr_dev->iboe.netdevs[port];
	if (!net_dev) {
		spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
		dev_err(dev, "find netdev %d failed!\r\n", port);
		return -EINVAL;
	}

	mtu = iboe_get_mtu(net_dev->mtu);
	props->active_mtu = mtu ? min(props->max_mtu, mtu) : IB_MTU_256;
	props->state = (netif_running(net_dev) && netif_carrier_ok(net_dev)) ?
			IB_PORT_ACTIVE : IB_PORT_DOWN;
	props->phys_state = (props->state == IB_PORT_ACTIVE) ? 5 : 3;

	spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);

	return 0;
}

static enum rdma_link_layer hns_roce_get_link_layer(struct ib_device *device,
						    u8 port_num)
{
	return IB_LINK_LAYER_ETHERNET;
}

static int hns_roce_query_gid(struct ib_device *ib_dev, u8 port_num, int index,
			      union ib_gid *gid)
{
	return 0;
}

static int hns_roce_query_pkey(struct ib_device *ib_dev, u8 port, u16 index,
			       u16 *pkey)
{
	*pkey = PKEY_ID;

	return 0;
}

static int hns_roce_modify_device(struct ib_device *ib_dev, int mask,
				  struct ib_device_modify *props)
{
	unsigned long flags;

	if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
		return -EOPNOTSUPP;

	if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
		spin_lock_irqsave(&to_hr_dev(ib_dev)->sm_lock, flags);
		memcpy(ib_dev->node_desc, props->node_desc, NODE_DESC_SIZE);
		spin_unlock_irqrestore(&to_hr_dev(ib_dev)->sm_lock, flags);
	}

	return 0;
}

static int hns_roce_modify_port(struct ib_device *ib_dev, u8 port_num, int mask,
				struct ib_port_modify *props)
{
	return 0;
}

static struct ib_ucontext *hns_roce_alloc_ucontext(struct ib_device *ib_dev,
						   struct ib_udata *udata)
{
	int ret = 0;
	struct hns_roce_ucontext *context;
	struct hns_roce_ib_alloc_ucontext_resp resp;
	struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);

	resp.qp_tab_size = hr_dev->caps.num_qps;

	context = kmalloc(sizeof(*context), GFP_KERNEL);
	if (!context)
		return ERR_PTR(-ENOMEM);

	ret = hns_roce_uar_alloc(hr_dev, &context->uar);
	if (ret)
		goto error_fail_uar_alloc;

	ret = ib_copy_to_udata(udata, &resp, sizeof(resp));
	if (ret)
		goto error_fail_copy_to_udata;

	return &context->ibucontext;

error_fail_copy_to_udata:
	hns_roce_uar_free(hr_dev, &context->uar);

error_fail_uar_alloc:
	kfree(context);

	return ERR_PTR(ret);
}

static int hns_roce_dealloc_ucontext(struct ib_ucontext *ibcontext)
{
	struct hns_roce_ucontext *context = to_hr_ucontext(ibcontext);

	hns_roce_uar_free(to_hr_dev(ibcontext->device), &context->uar);
	kfree(context);

	return 0;
}

static int hns_roce_mmap(struct ib_ucontext *context,
			 struct vm_area_struct *vma)
{
	struct hns_roce_dev *hr_dev = to_hr_dev(context->device);

	if (((vma->vm_end - vma->vm_start) % PAGE_SIZE) != 0)
		return -EINVAL;

	if (vma->vm_pgoff == 0) {
		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
		if (io_remap_pfn_range(vma, vma->vm_start,
				       to_hr_ucontext(context)->uar.pfn,
				       PAGE_SIZE, vma->vm_page_prot))
			return -EAGAIN;
	} else if (vma->vm_pgoff == 1 && hr_dev->hw_rev == HNS_ROCE_HW_VER1) {
		/* vm_pgoff: 1 -- TPTR */
		if (io_remap_pfn_range(vma, vma->vm_start,
				       hr_dev->tptr_dma_addr >> PAGE_SHIFT,
				       hr_dev->tptr_size,
				       vma->vm_page_prot))
			return -EAGAIN;
	} else
		return -EINVAL;

	return 0;
}

static int hns_roce_port_immutable(struct ib_device *ib_dev, u8 port_num,
				   struct ib_port_immutable *immutable)
{
	struct ib_port_attr attr;
	int ret;

	immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;

	ret = ib_query_port(ib_dev, port_num, &attr);
	if (ret)
		return ret;

	immutable->pkey_tbl_len = attr.pkey_tbl_len;
	immutable->gid_tbl_len = attr.gid_tbl_len;

	immutable->max_mad_size = IB_MGMT_MAD_SIZE;

	return 0;
}

static void hns_roce_unregister_device(struct hns_roce_dev *hr_dev)
{
	struct hns_roce_ib_iboe *iboe = &hr_dev->iboe;

	unregister_inetaddr_notifier(&iboe->nb_inet);
	unregister_netdevice_notifier(&iboe->nb);
	ib_unregister_device(&hr_dev->ib_dev);
}

static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
{
	int ret;
	struct hns_roce_ib_iboe *iboe = NULL;
	struct ib_device *ib_dev = NULL;
	struct device *dev = &hr_dev->pdev->dev;

	iboe = &hr_dev->iboe;
	spin_lock_init(&iboe->lock);

	ib_dev = &hr_dev->ib_dev;
	strlcpy(ib_dev->name, "hns_%d", IB_DEVICE_NAME_MAX);

	ib_dev->owner			= THIS_MODULE;
	ib_dev->node_type		= RDMA_NODE_IB_CA;
	ib_dev->dev.parent		= dev;

	ib_dev->phys_port_cnt		= hr_dev->caps.num_ports;
	ib_dev->local_dma_lkey		= hr_dev->caps.reserved_lkey;
	ib_dev->num_comp_vectors	= hr_dev->caps.num_comp_vectors;
	ib_dev->uverbs_abi_ver		= 1;
	ib_dev->uverbs_cmd_mask		=
		(1ULL << IB_USER_VERBS_CMD_GET_CONTEXT) |
		(1ULL << IB_USER_VERBS_CMD_QUERY_DEVICE) |
		(1ULL << IB_USER_VERBS_CMD_QUERY_PORT) |
		(1ULL << IB_USER_VERBS_CMD_ALLOC_PD) |
		(1ULL << IB_USER_VERBS_CMD_DEALLOC_PD) |
		(1ULL << IB_USER_VERBS_CMD_REG_MR) |
		(1ULL << IB_USER_VERBS_CMD_DEREG_MR) |
		(1ULL << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
		(1ULL << IB_USER_VERBS_CMD_CREATE_CQ) |
		(1ULL << IB_USER_VERBS_CMD_DESTROY_CQ) |
		(1ULL << IB_USER_VERBS_CMD_CREATE_QP) |
		(1ULL << IB_USER_VERBS_CMD_MODIFY_QP) |
		(1ULL << IB_USER_VERBS_CMD_QUERY_QP) |
		(1ULL << IB_USER_VERBS_CMD_DESTROY_QP);

	/* HCA||device||port */
	ib_dev->modify_device		= hns_roce_modify_device;
	ib_dev->query_device		= hns_roce_query_device;
	ib_dev->query_port		= hns_roce_query_port;
	ib_dev->modify_port		= hns_roce_modify_port;
	ib_dev->get_link_layer		= hns_roce_get_link_layer;
	ib_dev->get_netdev		= hns_roce_get_netdev;
	ib_dev->query_gid		= hns_roce_query_gid;
	ib_dev->add_gid			= hns_roce_add_gid;
	ib_dev->del_gid			= hns_roce_del_gid;
	ib_dev->query_pkey		= hns_roce_query_pkey;
	ib_dev->alloc_ucontext		= hns_roce_alloc_ucontext;
	ib_dev->dealloc_ucontext	= hns_roce_dealloc_ucontext;
	ib_dev->mmap			= hns_roce_mmap;

	/* PD */
	ib_dev->alloc_pd		= hns_roce_alloc_pd;
	ib_dev->dealloc_pd		= hns_roce_dealloc_pd;

	/* AH */
	ib_dev->create_ah		= hns_roce_create_ah;
	ib_dev->query_ah		= hns_roce_query_ah;
	ib_dev->destroy_ah		= hns_roce_destroy_ah;

	/* QP */
	ib_dev->create_qp		= hns_roce_create_qp;
	ib_dev->modify_qp		= hns_roce_modify_qp;
	ib_dev->query_qp		= hr_dev->hw->query_qp;
	ib_dev->destroy_qp		= hr_dev->hw->destroy_qp;
	ib_dev->post_send		= hr_dev->hw->post_send;
	ib_dev->post_recv		= hr_dev->hw->post_recv;

	/* CQ */
	ib_dev->create_cq		= hns_roce_ib_create_cq;
	ib_dev->destroy_cq		= hns_roce_ib_destroy_cq;
	ib_dev->req_notify_cq		= hr_dev->hw->req_notify_cq;
	ib_dev->poll_cq			= hr_dev->hw->poll_cq;

	/* MR */
	ib_dev->get_dma_mr		= hns_roce_get_dma_mr;
	ib_dev->reg_user_mr		= hns_roce_reg_user_mr;
	ib_dev->dereg_mr		= hns_roce_dereg_mr;

	/* OTHERS */
	ib_dev->get_port_immutable	= hns_roce_port_immutable;

	ret = ib_register_device(ib_dev, NULL);
	if (ret) {
		dev_err(dev, "ib_register_device failed!\n");
		return ret;
	}

	ret = hns_roce_setup_mtu_mac(hr_dev);
	if (ret) {
		dev_err(dev, "setup_mtu_mac failed!\n");
		goto error_failed_setup_mtu_mac;
	}

	iboe->nb.notifier_call = hns_roce_netdev_event;
	ret = register_netdevice_notifier(&iboe->nb);
	if (ret) {
		dev_err(dev, "register_netdevice_notifier failed!\n");
		goto error_failed_setup_mtu_mac;
	}

	return 0;

error_failed_setup_mtu_mac:
	ib_unregister_device(ib_dev);

	return ret;
}

static const struct of_device_id hns_roce_of_match[] = {
	{ .compatible = "hisilicon,hns-roce-v1", .data = &hns_roce_hw_v1, },
	{},
};
MODULE_DEVICE_TABLE(of, hns_roce_of_match);

static const struct acpi_device_id hns_roce_acpi_match[] = {
	{ "HISI00D1", (kernel_ulong_t)&hns_roce_hw_v1 },
	{},
};
MODULE_DEVICE_TABLE(acpi, hns_roce_acpi_match);

static int hns_roce_node_match(struct device *dev, void *fwnode)
{
	return dev->fwnode == fwnode;
}

static struct
platform_device *hns_roce_find_pdev(struct fwnode_handle *fwnode)
{
	struct device *dev;

	/* get the 'device'corresponding to matching 'fwnode' */
	dev = bus_find_device(&platform_bus_type, NULL,
			      fwnode, hns_roce_node_match);
	/* get the platform device */
	return dev ? to_platform_device(dev) : NULL;
}

static int hns_roce_get_cfg(struct hns_roce_dev *hr_dev)
{
	int i;
	int ret;
	u8 phy_port;
	int port_cnt = 0;
	struct device *dev = &hr_dev->pdev->dev;
	struct device_node *net_node;
	struct net_device *netdev = NULL;
	struct platform_device *pdev = NULL;
	struct resource *res;

	/* check if we are compatible with the underlying SoC */
	if (dev_of_node(dev)) {
		const struct of_device_id *of_id;

		of_id = of_match_node(hns_roce_of_match, dev->of_node);
		if (!of_id) {
			dev_err(dev, "device is not compatible!\n");
			return -ENXIO;
		}
		hr_dev->hw = (struct hns_roce_hw *)of_id->data;
		if (!hr_dev->hw) {
			dev_err(dev, "couldn't get H/W specific DT data!\n");
			return -ENXIO;
		}
	} else if (is_acpi_device_node(dev->fwnode)) {
		const struct acpi_device_id *acpi_id;

		acpi_id = acpi_match_device(hns_roce_acpi_match, dev);
		if (!acpi_id) {
			dev_err(dev, "device is not compatible!\n");
			return -ENXIO;
		}
		hr_dev->hw = (struct hns_roce_hw *) acpi_id->driver_data;
		if (!hr_dev->hw) {
			dev_err(dev, "couldn't get H/W specific ACPI data!\n");
			return -ENXIO;
		}
	} else {
		dev_err(dev, "can't read compatibility data from DT or ACPI\n");
		return -ENXIO;
	}

	/* get the mapped register base address */
	res = platform_get_resource(hr_dev->pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(dev, "memory resource not found!\n");
		return -EINVAL;
	}
	hr_dev->reg_base = devm_ioremap_resource(dev, res);
	if (IS_ERR(hr_dev->reg_base))
		return PTR_ERR(hr_dev->reg_base);

	/* read the node_guid of IB device from the DT or ACPI */
	ret = device_property_read_u8_array(dev, "node-guid",
					    (u8 *)&hr_dev->ib_dev.node_guid,
					    GUID_LEN);
	if (ret) {
		dev_err(dev, "couldn't get node_guid from DT or ACPI!\n");
		return ret;
	}

	/* get the RoCE associated ethernet ports or netdevices */
	for (i = 0; i < HNS_ROCE_MAX_PORTS; i++) {
		if (dev_of_node(dev)) {
			net_node = of_parse_phandle(dev->of_node, "eth-handle",
						    i);
			if (!net_node)
				continue;
			pdev = of_find_device_by_node(net_node);
		} else if (is_acpi_device_node(dev->fwnode)) {
			struct acpi_reference_args args;
			struct fwnode_handle *fwnode;

			ret = acpi_node_get_property_reference(dev->fwnode,
							       "eth-handle",
							       i, &args);
			if (ret)
				continue;
			fwnode = acpi_fwnode_handle(args.adev);
			pdev = hns_roce_find_pdev(fwnode);
		} else {
			dev_err(dev, "cannot read data from DT or ACPI\n");
			return -ENXIO;
		}

		if (pdev) {
			netdev = platform_get_drvdata(pdev);
			phy_port = (u8)i;
			if (netdev) {
				hr_dev->iboe.netdevs[port_cnt] = netdev;
				hr_dev->iboe.phy_port[port_cnt] = phy_port;
			} else {
				dev_err(dev, "no netdev found with pdev %s\n",
					pdev->name);
				return -ENODEV;
			}
			port_cnt++;
		}
	}

	if (port_cnt == 0) {
		dev_err(dev, "unable to get eth-handle for available ports!\n");
		return -EINVAL;
	}

	hr_dev->caps.num_ports = port_cnt;

	/* cmd issue mode: 0 is poll, 1 is event */
	hr_dev->cmd_mod = 1;
	hr_dev->loop_idc = 0;

	/* read the interrupt names from the DT or ACPI */
	ret = device_property_read_string_array(dev, "interrupt-names",
						hr_dev->irq_names,
						HNS_ROCE_MAX_IRQ_NUM);
	if (ret < 0) {
		dev_err(dev, "couldn't get interrupt names from DT or ACPI!\n");
		return ret;
	}

	/* fetch the interrupt numbers */
	for (i = 0; i < HNS_ROCE_MAX_IRQ_NUM; i++) {
		hr_dev->irq[i] = platform_get_irq(hr_dev->pdev, i);
		if (hr_dev->irq[i] <= 0) {
			dev_err(dev, "platform get of irq[=%d] failed!\n", i);
			return -EINVAL;
		}
	}

	return 0;
}

static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
{
	int ret;
	struct device *dev = &hr_dev->pdev->dev;

	ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtt_table,
				      HEM_TYPE_MTT, hr_dev->caps.mtt_entry_sz,
				      hr_dev->caps.num_mtt_segs, 1);
	if (ret) {
		dev_err(dev, "Failed to init MTT context memory, aborting.\n");
		return ret;
	}

	ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table,
				      HEM_TYPE_MTPT, hr_dev->caps.mtpt_entry_sz,
				      hr_dev->caps.num_mtpts, 1);
	if (ret) {
		dev_err(dev, "Failed to init MTPT context memory, aborting.\n");
		goto err_unmap_mtt;
	}

	ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.qp_table,
				      HEM_TYPE_QPC, hr_dev->caps.qpc_entry_sz,
				      hr_dev->caps.num_qps, 1);
	if (ret) {
		dev_err(dev, "Failed to init QP context memory, aborting.\n");
		goto err_unmap_dmpt;
	}

	ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.irrl_table,
				      HEM_TYPE_IRRL,
				      hr_dev->caps.irrl_entry_sz *
				      hr_dev->caps.max_qp_init_rdma,
				      hr_dev->caps.num_qps, 1);
	if (ret) {
		dev_err(dev, "Failed to init irrl_table memory, aborting.\n");
		goto err_unmap_qp;
	}

	ret = hns_roce_init_hem_table(hr_dev, &hr_dev->cq_table.table,
				      HEM_TYPE_CQC, hr_dev->caps.cqc_entry_sz,
				      hr_dev->caps.num_cqs, 1);
	if (ret) {
		dev_err(dev, "Failed to init CQ context memory, aborting.\n");
		goto err_unmap_irrl;
	}

	return 0;

err_unmap_irrl:
	hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.irrl_table);

err_unmap_qp:
	hns_roce_cleanup_hem_table(hr_dev, &hr_dev->qp_table.qp_table);

err_unmap_dmpt:
	hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table);

err_unmap_mtt:
	hns_roce_cleanup_hem_table(hr_dev, &hr_dev->mr_table.mtt_table);

	return ret;
}

/**
 * hns_roce_setup_hca - setup host channel adapter
 * @hr_dev: pointer to hns roce device
 * Return : int
 */
static int hns_roce_setup_hca(struct hns_roce_dev *hr_dev)
{
	int ret;
	struct device *dev = &hr_dev->pdev->dev;

	spin_lock_init(&hr_dev->sm_lock);
	spin_lock_init(&hr_dev->bt_cmd_lock);

	ret = hns_roce_init_uar_table(hr_dev);
	if (ret) {
		dev_err(dev, "Failed to initialize uar table. aborting\n");
		return ret;
	}

	ret = hns_roce_uar_alloc(hr_dev, &hr_dev->priv_uar);
	if (ret) {
		dev_err(dev, "Failed to allocate priv_uar.\n");
		goto err_uar_table_free;
	}

	ret = hns_roce_init_pd_table(hr_dev);
	if (ret) {
		dev_err(dev, "Failed to init protected domain table.\n");
		goto err_uar_alloc_free;
	}

	ret = hns_roce_init_mr_table(hr_dev);
	if (ret) {
		dev_err(dev, "Failed to init memory region table.\n");
		goto err_pd_table_free;
	}

	ret = hns_roce_init_cq_table(hr_dev);
	if (ret) {
		dev_err(dev, "Failed to init completion queue table.\n");
		goto err_mr_table_free;
	}

	ret = hns_roce_init_qp_table(hr_dev);
	if (ret) {
		dev_err(dev, "Failed to init queue pair table.\n");
		goto err_cq_table_free;
	}

	return 0;

err_cq_table_free:
	hns_roce_cleanup_cq_table(hr_dev);

err_mr_table_free:
	hns_roce_cleanup_mr_table(hr_dev);

err_pd_table_free:
	hns_roce_cleanup_pd_table(hr_dev);

err_uar_alloc_free:
	hns_roce_uar_free(hr_dev, &hr_dev->priv_uar);

err_uar_table_free:
	hns_roce_cleanup_uar_table(hr_dev);
	return ret;
}

/**
 * hns_roce_probe - RoCE driver entrance
 * @pdev: pointer to platform device
 * Return : int
 *
 */
static int hns_roce_probe(struct platform_device *pdev)
{
	int ret;
	struct hns_roce_dev *hr_dev;
	struct device *dev = &pdev->dev;

	hr_dev = (struct hns_roce_dev *)ib_alloc_device(sizeof(*hr_dev));
	if (!hr_dev)
		return -ENOMEM;

	hr_dev->pdev = pdev;
	platform_set_drvdata(pdev, hr_dev);

	if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64ULL)) &&
	    dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32ULL))) {
		dev_err(dev, "Not usable DMA addressing mode\n");
		ret = -EIO;
		goto error_failed_get_cfg;
	}

	ret = hns_roce_get_cfg(hr_dev);
	if (ret) {
		dev_err(dev, "Get Configuration failed!\n");
		goto error_failed_get_cfg;
	}

	ret = hr_dev->hw->reset(hr_dev, true);
	if (ret) {
		dev_err(dev, "Reset RoCE engine failed!\n");
		goto error_failed_get_cfg;
	}

	hr_dev->hw->hw_profile(hr_dev);

	ret = hns_roce_cmd_init(hr_dev);
	if (ret) {
		dev_err(dev, "cmd init failed!\n");
		goto error_failed_cmd_init;
	}

	ret = hns_roce_init_eq_table(hr_dev);
	if (ret) {
		dev_err(dev, "eq init failed!\n");
		goto error_failed_eq_table;
	}

	if (hr_dev->cmd_mod) {
		ret = hns_roce_cmd_use_events(hr_dev);
		if (ret) {
			dev_err(dev, "Switch to event-driven cmd failed!\n");
			goto error_failed_use_event;
		}
	}

	ret = hns_roce_init_hem(hr_dev);
	if (ret) {
		dev_err(dev, "init HEM(Hardware Entry Memory) failed!\n");
		goto error_failed_init_hem;
	}

	ret = hns_roce_setup_hca(hr_dev);
	if (ret) {
		dev_err(dev, "setup hca failed!\n");
		goto error_failed_setup_hca;
	}

	ret = hr_dev->hw->hw_init(hr_dev);
	if (ret) {
		dev_err(dev, "hw_init failed!\n");
		goto error_failed_engine_init;
	}

	ret = hns_roce_register_device(hr_dev);
	if (ret)
		goto error_failed_register_device;

	return 0;

error_failed_register_device:
	hr_dev->hw->hw_exit(hr_dev);

error_failed_engine_init:
	hns_roce_cleanup_bitmap(hr_dev);

error_failed_setup_hca:
	hns_roce_cleanup_hem(hr_dev);

error_failed_init_hem:
	if (hr_dev->cmd_mod)
		hns_roce_cmd_use_polling(hr_dev);

error_failed_use_event:
	hns_roce_cleanup_eq_table(hr_dev);

error_failed_eq_table:
	hns_roce_cmd_cleanup(hr_dev);

error_failed_cmd_init:
	ret = hr_dev->hw->reset(hr_dev, false);
	if (ret)
		dev_err(&hr_dev->pdev->dev, "roce_engine reset fail\n");

error_failed_get_cfg:
	ib_dealloc_device(&hr_dev->ib_dev);

	return ret;
}

/**
 * hns_roce_remove - remove RoCE device
 * @pdev: pointer to platform device
 */
static int hns_roce_remove(struct platform_device *pdev)
{
	struct hns_roce_dev *hr_dev = platform_get_drvdata(pdev);

	hns_roce_unregister_device(hr_dev);
	hr_dev->hw->hw_exit(hr_dev);
	hns_roce_cleanup_bitmap(hr_dev);
	hns_roce_cleanup_hem(hr_dev);

	if (hr_dev->cmd_mod)
		hns_roce_cmd_use_polling(hr_dev);

	hns_roce_cleanup_eq_table(hr_dev);
	hns_roce_cmd_cleanup(hr_dev);
	hr_dev->hw->reset(hr_dev, false);

	ib_dealloc_device(&hr_dev->ib_dev);

	return 0;
}

static struct platform_driver hns_roce_driver = {
	.probe = hns_roce_probe,
	.remove = hns_roce_remove,
	.driver = {
		.name = DRV_NAME,
		.of_match_table = hns_roce_of_match,
		.acpi_match_table = ACPI_PTR(hns_roce_acpi_match),
	},
};

module_platform_driver(hns_roce_driver);

MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Wei Hu <xavier.huwei@huawei.com>");
MODULE_AUTHOR("Nenglong Zhao <zhaonenglong@hisilicon.com>");
MODULE_AUTHOR("Lijun Ou <oulijun@huawei.com>");
MODULE_DESCRIPTION("HNS RoCE Driver");