summaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/freescale/enetc/enetc_pf.c
blob: 15876a6e7598d5e8b94cb7672c34eb174f3ce78a (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
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/* Copyright 2017-2019 NXP */

#include <linux/module.h>
#include <linux/of_mdio.h>
#include <linux/of_net.h>
#include "enetc_pf.h"

#define ENETC_DRV_VER_MAJ 1
#define ENETC_DRV_VER_MIN 0

#define ENETC_DRV_VER_STR __stringify(ENETC_DRV_VER_MAJ) "." \
			  __stringify(ENETC_DRV_VER_MIN)
static const char enetc_drv_ver[] = ENETC_DRV_VER_STR;
#define ENETC_DRV_NAME_STR "ENETC PF driver"
static const char enetc_drv_name[] = ENETC_DRV_NAME_STR;

static void enetc_pf_get_primary_mac_addr(struct enetc_hw *hw, int si, u8 *addr)
{
	u32 upper = __raw_readl(hw->port + ENETC_PSIPMAR0(si));
	u16 lower = __raw_readw(hw->port + ENETC_PSIPMAR1(si));

	*(u32 *)addr = upper;
	*(u16 *)(addr + 4) = lower;
}

static void enetc_pf_set_primary_mac_addr(struct enetc_hw *hw, int si,
					  const u8 *addr)
{
	u32 upper = *(const u32 *)addr;
	u16 lower = *(const u16 *)(addr + 4);

	__raw_writel(upper, hw->port + ENETC_PSIPMAR0(si));
	__raw_writew(lower, hw->port + ENETC_PSIPMAR1(si));
}

static int enetc_pf_set_mac_addr(struct net_device *ndev, void *addr)
{
	struct enetc_ndev_priv *priv = netdev_priv(ndev);
	struct sockaddr *saddr = addr;

	if (!is_valid_ether_addr(saddr->sa_data))
		return -EADDRNOTAVAIL;

	memcpy(ndev->dev_addr, saddr->sa_data, ndev->addr_len);
	enetc_pf_set_primary_mac_addr(&priv->si->hw, 0, saddr->sa_data);

	return 0;
}

static void enetc_set_vlan_promisc(struct enetc_hw *hw, char si_map)
{
	u32 val = enetc_port_rd(hw, ENETC_PSIPVMR);

	val &= ~ENETC_PSIPVMR_SET_VP(ENETC_VLAN_PROMISC_MAP_ALL);
	enetc_port_wr(hw, ENETC_PSIPVMR, ENETC_PSIPVMR_SET_VP(si_map) | val);
}

static bool enetc_si_vlan_promisc_is_on(struct enetc_pf *pf, int si_idx)
{
	return pf->vlan_promisc_simap & BIT(si_idx);
}

static bool enetc_vlan_filter_is_on(struct enetc_pf *pf)
{
	int i;

	for_each_set_bit(i, pf->active_vlans, VLAN_N_VID)
		return true;

	return false;
}

static void enetc_enable_si_vlan_promisc(struct enetc_pf *pf, int si_idx)
{
	pf->vlan_promisc_simap |= BIT(si_idx);
	enetc_set_vlan_promisc(&pf->si->hw, pf->vlan_promisc_simap);
}

static void enetc_disable_si_vlan_promisc(struct enetc_pf *pf, int si_idx)
{
	pf->vlan_promisc_simap &= ~BIT(si_idx);
	enetc_set_vlan_promisc(&pf->si->hw, pf->vlan_promisc_simap);
}

static void enetc_set_isol_vlan(struct enetc_hw *hw, int si, u16 vlan, u8 qos)
{
	u32 val = 0;

	if (vlan)
		val = ENETC_PSIVLAN_EN | ENETC_PSIVLAN_SET_QOS(qos) | vlan;

	enetc_port_wr(hw, ENETC_PSIVLANR(si), val);
}

static int enetc_mac_addr_hash_idx(const u8 *addr)
{
	u64 fold = __swab64(ether_addr_to_u64(addr)) >> 16;
	u64 mask = 0;
	int res = 0;
	int i;

	for (i = 0; i < 8; i++)
		mask |= BIT_ULL(i * 6);

	for (i = 0; i < 6; i++)
		res |= (hweight64(fold & (mask << i)) & 0x1) << i;

	return res;
}

static void enetc_reset_mac_addr_filter(struct enetc_mac_filter *filter)
{
	filter->mac_addr_cnt = 0;

	bitmap_zero(filter->mac_hash_table,
		    ENETC_MADDR_HASH_TBL_SZ);
}

static void enetc_add_mac_addr_em_filter(struct enetc_mac_filter *filter,
					 const unsigned char *addr)
{
	/* add exact match addr */
	ether_addr_copy(filter->mac_addr, addr);
	filter->mac_addr_cnt++;
}

static void enetc_add_mac_addr_ht_filter(struct enetc_mac_filter *filter,
					 const unsigned char *addr)
{
	int idx = enetc_mac_addr_hash_idx(addr);

	/* add hash table entry */
	__set_bit(idx, filter->mac_hash_table);
	filter->mac_addr_cnt++;
}

static void enetc_clear_mac_ht_flt(struct enetc_si *si, int si_idx, int type)
{
	bool err = si->errata & ENETC_ERR_UCMCSWP;

	if (type == UC) {
		enetc_port_wr(&si->hw, ENETC_PSIUMHFR0(si_idx, err), 0);
		enetc_port_wr(&si->hw, ENETC_PSIUMHFR1(si_idx), 0);
	} else { /* MC */
		enetc_port_wr(&si->hw, ENETC_PSIMMHFR0(si_idx, err), 0);
		enetc_port_wr(&si->hw, ENETC_PSIMMHFR1(si_idx), 0);
	}
}

static void enetc_set_mac_ht_flt(struct enetc_si *si, int si_idx, int type,
				 u32 *hash)
{
	bool err = si->errata & ENETC_ERR_UCMCSWP;

	if (type == UC) {
		enetc_port_wr(&si->hw, ENETC_PSIUMHFR0(si_idx, err), *hash);
		enetc_port_wr(&si->hw, ENETC_PSIUMHFR1(si_idx), *(hash + 1));
	} else { /* MC */
		enetc_port_wr(&si->hw, ENETC_PSIMMHFR0(si_idx, err), *hash);
		enetc_port_wr(&si->hw, ENETC_PSIMMHFR1(si_idx), *(hash + 1));
	}
}

static void enetc_sync_mac_filters(struct enetc_pf *pf)
{
	struct enetc_mac_filter *f = pf->mac_filter;
	struct enetc_si *si = pf->si;
	int i, pos;

	pos = EMETC_MAC_ADDR_FILT_RES;

	for (i = 0; i < MADDR_TYPE; i++, f++) {
		bool em = (f->mac_addr_cnt == 1) && (i == UC);
		bool clear = !f->mac_addr_cnt;

		if (clear) {
			if (i == UC)
				enetc_clear_mac_flt_entry(si, pos);

			enetc_clear_mac_ht_flt(si, 0, i);
			continue;
		}

		/* exact match filter */
		if (em) {
			int err;

			enetc_clear_mac_ht_flt(si, 0, UC);

			err = enetc_set_mac_flt_entry(si, pos, f->mac_addr,
						      BIT(0));
			if (!err)
				continue;

			/* fallback to HT filtering */
			dev_warn(&si->pdev->dev, "fallback to HT filt (%d)\n",
				 err);
		}

		/* hash table filter, clear EM filter for UC entries */
		if (i == UC)
			enetc_clear_mac_flt_entry(si, pos);

		enetc_set_mac_ht_flt(si, 0, i, (u32 *)f->mac_hash_table);
	}
}

static void enetc_pf_set_rx_mode(struct net_device *ndev)
{
	struct enetc_ndev_priv *priv = netdev_priv(ndev);
	struct enetc_pf *pf = enetc_si_priv(priv->si);
	struct enetc_hw *hw = &priv->si->hw;
	bool uprom = false, mprom = false;
	struct enetc_mac_filter *filter;
	struct netdev_hw_addr *ha;
	u32 psipmr = 0;
	bool em;

	if (ndev->flags & IFF_PROMISC) {
		/* enable promisc mode for SI0 (PF) */
		psipmr = ENETC_PSIPMR_SET_UP(0) | ENETC_PSIPMR_SET_MP(0);
		uprom = true;
		mprom = true;
		/* enable VLAN promisc mode for SI0 */
		if (!enetc_si_vlan_promisc_is_on(pf, 0))
			enetc_enable_si_vlan_promisc(pf, 0);

	} else if (ndev->flags & IFF_ALLMULTI) {
		/* enable multi cast promisc mode for SI0 (PF) */
		psipmr = ENETC_PSIPMR_SET_MP(0);
		mprom = true;
	}

	/* first 2 filter entries belong to PF */
	if (!uprom) {
		/* Update unicast filters */
		filter = &pf->mac_filter[UC];
		enetc_reset_mac_addr_filter(filter);

		em = (netdev_uc_count(ndev) == 1);
		netdev_for_each_uc_addr(ha, ndev) {
			if (em) {
				enetc_add_mac_addr_em_filter(filter, ha->addr);
				break;
			}

			enetc_add_mac_addr_ht_filter(filter, ha->addr);
		}
	}

	if (!mprom) {
		/* Update multicast filters */
		filter = &pf->mac_filter[MC];
		enetc_reset_mac_addr_filter(filter);

		netdev_for_each_mc_addr(ha, ndev) {
			if (!is_multicast_ether_addr(ha->addr))
				continue;

			enetc_add_mac_addr_ht_filter(filter, ha->addr);
		}
	}

	if (!uprom || !mprom)
		/* update PF entries */
		enetc_sync_mac_filters(pf);

	psipmr |= enetc_port_rd(hw, ENETC_PSIPMR) &
		  ~(ENETC_PSIPMR_SET_UP(0) | ENETC_PSIPMR_SET_MP(0));
	enetc_port_wr(hw, ENETC_PSIPMR, psipmr);
}

static void enetc_set_vlan_ht_filter(struct enetc_hw *hw, int si_idx,
				     u32 *hash)
{
	enetc_port_wr(hw, ENETC_PSIVHFR0(si_idx), *hash);
	enetc_port_wr(hw, ENETC_PSIVHFR1(si_idx), *(hash + 1));
}

static int enetc_vid_hash_idx(unsigned int vid)
{
	int res = 0;
	int i;

	for (i = 0; i < 6; i++)
		res |= (hweight8(vid & (BIT(i) | BIT(i + 6))) & 0x1) << i;

	return res;
}

static void enetc_sync_vlan_ht_filter(struct enetc_pf *pf, bool rehash)
{
	int i;

	if (rehash) {
		bitmap_zero(pf->vlan_ht_filter, ENETC_VLAN_HT_SIZE);

		for_each_set_bit(i, pf->active_vlans, VLAN_N_VID) {
			int hidx = enetc_vid_hash_idx(i);

			__set_bit(hidx, pf->vlan_ht_filter);
		}
	}

	enetc_set_vlan_ht_filter(&pf->si->hw, 0, (u32 *)pf->vlan_ht_filter);
}

static int enetc_vlan_rx_add_vid(struct net_device *ndev, __be16 prot, u16 vid)
{
	struct enetc_ndev_priv *priv = netdev_priv(ndev);
	struct enetc_pf *pf = enetc_si_priv(priv->si);
	int idx;

	if (enetc_si_vlan_promisc_is_on(pf, 0))
		enetc_disable_si_vlan_promisc(pf, 0);

	__set_bit(vid, pf->active_vlans);

	idx = enetc_vid_hash_idx(vid);
	if (!__test_and_set_bit(idx, pf->vlan_ht_filter))
		enetc_sync_vlan_ht_filter(pf, false);

	return 0;
}

static int enetc_vlan_rx_del_vid(struct net_device *ndev, __be16 prot, u16 vid)
{
	struct enetc_ndev_priv *priv = netdev_priv(ndev);
	struct enetc_pf *pf = enetc_si_priv(priv->si);

	__clear_bit(vid, pf->active_vlans);
	enetc_sync_vlan_ht_filter(pf, true);

	if (!enetc_vlan_filter_is_on(pf))
		enetc_enable_si_vlan_promisc(pf, 0);

	return 0;
}

static void enetc_set_loopback(struct net_device *ndev, bool en)
{
	struct enetc_ndev_priv *priv = netdev_priv(ndev);
	struct enetc_hw *hw = &priv->si->hw;
	u32 reg;

	reg = enetc_port_rd(hw, ENETC_PM0_IF_MODE);
	if (reg & ENETC_PMO_IFM_RG) {
		/* RGMII mode */
		reg = (reg & ~ENETC_PM0_IFM_RLP) |
		      (en ? ENETC_PM0_IFM_RLP : 0);
		enetc_port_wr(hw, ENETC_PM0_IF_MODE, reg);
	} else {
		/* assume SGMII mode */
		reg = enetc_port_rd(hw, ENETC_PM0_CMD_CFG);
		reg = (reg & ~ENETC_PM0_CMD_XGLP) |
		      (en ? ENETC_PM0_CMD_XGLP : 0);
		reg = (reg & ~ENETC_PM0_CMD_PHY_TX_EN) |
		      (en ? ENETC_PM0_CMD_PHY_TX_EN : 0);
		enetc_port_wr(hw, ENETC_PM0_CMD_CFG, reg);
		enetc_port_wr(hw, ENETC_PM1_CMD_CFG, reg);
	}
}

static int enetc_pf_set_vf_mac(struct net_device *ndev, int vf, u8 *mac)
{
	struct enetc_ndev_priv *priv = netdev_priv(ndev);
	struct enetc_pf *pf = enetc_si_priv(priv->si);
	struct enetc_vf_state *vf_state;

	if (vf >= pf->total_vfs)
		return -EINVAL;

	if (!is_valid_ether_addr(mac))
		return -EADDRNOTAVAIL;

	vf_state = &pf->vf_state[vf];
	vf_state->flags |= ENETC_VF_FLAG_PF_SET_MAC;
	enetc_pf_set_primary_mac_addr(&priv->si->hw, vf + 1, mac);
	return 0;
}

static int enetc_pf_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan,
				u8 qos, __be16 proto)
{
	struct enetc_ndev_priv *priv = netdev_priv(ndev);
	struct enetc_pf *pf = enetc_si_priv(priv->si);

	if (priv->si->errata & ENETC_ERR_VLAN_ISOL)
		return -EOPNOTSUPP;

	if (vf >= pf->total_vfs)
		return -EINVAL;

	if (proto != htons(ETH_P_8021Q))
		/* only C-tags supported for now */
		return -EPROTONOSUPPORT;

	enetc_set_isol_vlan(&priv->si->hw, vf + 1, vlan, qos);
	return 0;
}

static int enetc_pf_set_vf_spoofchk(struct net_device *ndev, int vf, bool en)
{
	struct enetc_ndev_priv *priv = netdev_priv(ndev);
	struct enetc_pf *pf = enetc_si_priv(priv->si);
	u32 cfgr;

	if (vf >= pf->total_vfs)
		return -EINVAL;

	cfgr = enetc_port_rd(&priv->si->hw, ENETC_PSICFGR0(vf + 1));
	cfgr = (cfgr & ~ENETC_PSICFGR0_ASE) | (en ? ENETC_PSICFGR0_ASE : 0);
	enetc_port_wr(&priv->si->hw, ENETC_PSICFGR0(vf + 1), cfgr);

	return 0;
}

static void enetc_port_setup_primary_mac_address(struct enetc_si *si)
{
	unsigned char mac_addr[MAX_ADDR_LEN];
	struct enetc_pf *pf = enetc_si_priv(si);
	struct enetc_hw *hw = &si->hw;
	int i;

	/* check MAC addresses for PF and all VFs, if any is 0 set it ro rand */
	for (i = 0; i < pf->total_vfs + 1; i++) {
		enetc_pf_get_primary_mac_addr(hw, i, mac_addr);
		if (!is_zero_ether_addr(mac_addr))
			continue;
		eth_random_addr(mac_addr);
		dev_info(&si->pdev->dev, "no MAC address specified for SI%d, using %pM\n",
			 i, mac_addr);
		enetc_pf_set_primary_mac_addr(hw, i, mac_addr);
	}
}

static void enetc_port_assign_rfs_entries(struct enetc_si *si)
{
	struct enetc_pf *pf = enetc_si_priv(si);
	struct enetc_hw *hw = &si->hw;
	int num_entries, vf_entries, i;
	u32 val;

	/* split RFS entries between functions */
	val = enetc_port_rd(hw, ENETC_PRFSCAPR);
	num_entries = ENETC_PRFSCAPR_GET_NUM_RFS(val);
	vf_entries = num_entries / (pf->total_vfs + 1);

	for (i = 0; i < pf->total_vfs; i++)
		enetc_port_wr(hw, ENETC_PSIRFSCFGR(i + 1), vf_entries);
	enetc_port_wr(hw, ENETC_PSIRFSCFGR(0),
		      num_entries - vf_entries * pf->total_vfs);

	/* enable RFS on port */
	enetc_port_wr(hw, ENETC_PRFSMR, ENETC_PRFSMR_RFSE);
}

static void enetc_port_si_configure(struct enetc_si *si)
{
	struct enetc_pf *pf = enetc_si_priv(si);
	struct enetc_hw *hw = &si->hw;
	int num_rings, i;
	u32 val;

	val = enetc_port_rd(hw, ENETC_PCAPR0);
	num_rings = min(ENETC_PCAPR0_RXBDR(val), ENETC_PCAPR0_TXBDR(val));

	val = ENETC_PSICFGR0_SET_TXBDR(ENETC_PF_NUM_RINGS);
	val |= ENETC_PSICFGR0_SET_RXBDR(ENETC_PF_NUM_RINGS);

	if (unlikely(num_rings < ENETC_PF_NUM_RINGS)) {
		val = ENETC_PSICFGR0_SET_TXBDR(num_rings);
		val |= ENETC_PSICFGR0_SET_RXBDR(num_rings);

		dev_warn(&si->pdev->dev, "Found %d rings, expected %d!\n",
			 num_rings, ENETC_PF_NUM_RINGS);

		num_rings = 0;
	}

	/* Add default one-time settings for SI0 (PF) */
	val |= ENETC_PSICFGR0_SIVC(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S);

	enetc_port_wr(hw, ENETC_PSICFGR0(0), val);

	if (num_rings)
		num_rings -= ENETC_PF_NUM_RINGS;

	/* Configure the SIs for each available VF */
	val = ENETC_PSICFGR0_SIVC(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S);
	val |= ENETC_PSICFGR0_VTE | ENETC_PSICFGR0_SIVIE;

	if (num_rings) {
		num_rings /= pf->total_vfs;
		val |= ENETC_PSICFGR0_SET_TXBDR(num_rings);
		val |= ENETC_PSICFGR0_SET_RXBDR(num_rings);
	}

	for (i = 0; i < pf->total_vfs; i++)
		enetc_port_wr(hw, ENETC_PSICFGR0(i + 1), val);

	/* Port level VLAN settings */
	val = ENETC_PVCLCTR_OVTPIDL(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S);
	enetc_port_wr(hw, ENETC_PVCLCTR, val);
	/* use outer tag for VLAN filtering */
	enetc_port_wr(hw, ENETC_PSIVLANFMR, ENETC_PSIVLANFMR_VS);
}

static void enetc_configure_port_mac(struct enetc_hw *hw)
{
	enetc_port_wr(hw, ENETC_PM0_MAXFRM,
		      ENETC_SET_MAXFRM(ENETC_RX_MAXFRM_SIZE));

	enetc_port_wr(hw, ENETC_PTCMSDUR(0), ENETC_MAC_MAXFRM_SIZE);
	enetc_port_wr(hw, ENETC_PTXMBAR, 2 * ENETC_MAC_MAXFRM_SIZE);

	enetc_port_wr(hw, ENETC_PM0_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN |
		      ENETC_PM0_CMD_TXP	| ENETC_PM0_PROMISC |
		      ENETC_PM0_TX_EN | ENETC_PM0_RX_EN);

	enetc_port_wr(hw, ENETC_PM1_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN |
		      ENETC_PM0_CMD_TXP	| ENETC_PM0_PROMISC |
		      ENETC_PM0_TX_EN | ENETC_PM0_RX_EN);
	/* set auto-speed for RGMII */
	if (enetc_port_rd(hw, ENETC_PM0_IF_MODE) & ENETC_PMO_IFM_RG)
		enetc_port_wr(hw, ENETC_PM0_IF_MODE, ENETC_PM0_IFM_RGAUTO);
	if (enetc_global_rd(hw, ENETC_G_EPFBLPR(1)) == ENETC_G_EPFBLPR1_XGMII)
		enetc_port_wr(hw, ENETC_PM0_IF_MODE, ENETC_PM0_IFM_XGMII);
}

static void enetc_configure_port_pmac(struct enetc_hw *hw)
{
	u32 temp;

	/* Set pMAC step lock */
	temp = enetc_port_rd(hw, ENETC_PFPMR);
	enetc_port_wr(hw, ENETC_PFPMR,
		      temp | ENETC_PFPMR_PMACE | ENETC_PFPMR_MWLM);

	temp = enetc_port_rd(hw, ENETC_MMCSR);
	enetc_port_wr(hw, ENETC_MMCSR, temp | ENETC_MMCSR_ME);
}

static void enetc_configure_port(struct enetc_pf *pf)
{
	u8 hash_key[ENETC_RSSHASH_KEY_SIZE];
	struct enetc_hw *hw = &pf->si->hw;

	enetc_configure_port_pmac(hw);

	enetc_configure_port_mac(hw);

	enetc_port_si_configure(pf->si);

	/* set up hash key */
	get_random_bytes(hash_key, ENETC_RSSHASH_KEY_SIZE);
	enetc_set_rss_key(hw, hash_key);

	/* split up RFS entries */
	enetc_port_assign_rfs_entries(pf->si);

	/* fix-up primary MAC addresses, if not set already */
	enetc_port_setup_primary_mac_address(pf->si);

	/* enforce VLAN promisc mode for all SIs */
	pf->vlan_promisc_simap = ENETC_VLAN_PROMISC_MAP_ALL;
	enetc_set_vlan_promisc(hw, pf->vlan_promisc_simap);

	enetc_port_wr(hw, ENETC_PSIPMR, 0);

	/* enable port */
	enetc_port_wr(hw, ENETC_PMR, ENETC_PMR_EN);
}

/* Messaging */
static u16 enetc_msg_pf_set_vf_primary_mac_addr(struct enetc_pf *pf,
						int vf_id)
{
	struct enetc_vf_state *vf_state = &pf->vf_state[vf_id];
	struct enetc_msg_swbd *msg = &pf->rxmsg[vf_id];
	struct enetc_msg_cmd_set_primary_mac *cmd;
	struct device *dev = &pf->si->pdev->dev;
	u16 cmd_id;
	char *addr;

	cmd = (struct enetc_msg_cmd_set_primary_mac *)msg->vaddr;
	cmd_id = cmd->header.id;
	if (cmd_id != ENETC_MSG_CMD_MNG_ADD)
		return ENETC_MSG_CMD_STATUS_FAIL;

	addr = cmd->mac.sa_data;
	if (vf_state->flags & ENETC_VF_FLAG_PF_SET_MAC)
		dev_warn(dev, "Attempt to override PF set mac addr for VF%d\n",
			 vf_id);
	else
		enetc_pf_set_primary_mac_addr(&pf->si->hw, vf_id + 1, addr);

	return ENETC_MSG_CMD_STATUS_OK;
}

void enetc_msg_handle_rxmsg(struct enetc_pf *pf, int vf_id, u16 *status)
{
	struct enetc_msg_swbd *msg = &pf->rxmsg[vf_id];
	struct device *dev = &pf->si->pdev->dev;
	struct enetc_msg_cmd_header *cmd_hdr;
	u16 cmd_type;

	*status = ENETC_MSG_CMD_STATUS_OK;
	cmd_hdr = (struct enetc_msg_cmd_header *)msg->vaddr;
	cmd_type = cmd_hdr->type;

	switch (cmd_type) {
	case ENETC_MSG_CMD_MNG_MAC:
		*status = enetc_msg_pf_set_vf_primary_mac_addr(pf, vf_id);
		break;
	default:
		dev_err(dev, "command not supported (cmd_type: 0x%x)\n",
			cmd_type);
	}
}

#ifdef CONFIG_PCI_IOV
static int enetc_sriov_configure(struct pci_dev *pdev, int num_vfs)
{
	struct enetc_si *si = pci_get_drvdata(pdev);
	struct enetc_pf *pf = enetc_si_priv(si);
	int err;

	if (!num_vfs) {
		enetc_msg_psi_free(pf);
		kfree(pf->vf_state);
		pf->num_vfs = 0;
		pci_disable_sriov(pdev);
	} else {
		pf->num_vfs = num_vfs;

		pf->vf_state = kcalloc(num_vfs, sizeof(struct enetc_vf_state),
				       GFP_KERNEL);
		if (!pf->vf_state) {
			pf->num_vfs = 0;
			return -ENOMEM;
		}

		err = enetc_msg_psi_init(pf);
		if (err) {
			dev_err(&pdev->dev, "enetc_msg_psi_init (%d)\n", err);
			goto err_msg_psi;
		}

		err = pci_enable_sriov(pdev, num_vfs);
		if (err) {
			dev_err(&pdev->dev, "pci_enable_sriov err %d\n", err);
			goto err_en_sriov;
		}
	}

	return num_vfs;

err_en_sriov:
	enetc_msg_psi_free(pf);
err_msg_psi:
	kfree(pf->vf_state);
	pf->num_vfs = 0;

	return err;
}
#else
#define enetc_sriov_configure(pdev, num_vfs)	(void)0
#endif

static int enetc_pf_set_features(struct net_device *ndev,
				 netdev_features_t features)
{
	netdev_features_t changed = ndev->features ^ features;
	struct enetc_ndev_priv *priv = netdev_priv(ndev);

	if (changed & NETIF_F_HW_VLAN_CTAG_RX)
		enetc_enable_rxvlan(&priv->si->hw, 0,
				    !!(features & NETIF_F_HW_VLAN_CTAG_RX));

	if (changed & NETIF_F_HW_VLAN_CTAG_TX)
		enetc_enable_txvlan(&priv->si->hw, 0,
				    !!(features & NETIF_F_HW_VLAN_CTAG_TX));

	if (changed & NETIF_F_LOOPBACK)
		enetc_set_loopback(ndev, !!(features & NETIF_F_LOOPBACK));

	return enetc_set_features(ndev, features);
}

static const struct net_device_ops enetc_ndev_ops = {
	.ndo_open		= enetc_open,
	.ndo_stop		= enetc_close,
	.ndo_start_xmit		= enetc_xmit,
	.ndo_get_stats		= enetc_get_stats,
	.ndo_set_mac_address	= enetc_pf_set_mac_addr,
	.ndo_set_rx_mode	= enetc_pf_set_rx_mode,
	.ndo_vlan_rx_add_vid	= enetc_vlan_rx_add_vid,
	.ndo_vlan_rx_kill_vid	= enetc_vlan_rx_del_vid,
	.ndo_set_vf_mac		= enetc_pf_set_vf_mac,
	.ndo_set_vf_vlan	= enetc_pf_set_vf_vlan,
	.ndo_set_vf_spoofchk	= enetc_pf_set_vf_spoofchk,
	.ndo_set_features	= enetc_pf_set_features,
};

static void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
				  const struct net_device_ops *ndev_ops)
{
	struct enetc_ndev_priv *priv = netdev_priv(ndev);

	SET_NETDEV_DEV(ndev, &si->pdev->dev);
	priv->ndev = ndev;
	priv->si = si;
	priv->dev = &si->pdev->dev;
	si->ndev = ndev;

	priv->msg_enable = (NETIF_MSG_WOL << 1) - 1;
	ndev->netdev_ops = ndev_ops;
	enetc_set_ethtool_ops(ndev);
	ndev->watchdog_timeo = 5 * HZ;
	ndev->max_mtu = ENETC_MAX_MTU;

	ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_HW_CSUM |
			    NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
			    NETIF_F_LOOPBACK;
	ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG |
			 NETIF_F_RXCSUM | NETIF_F_HW_CSUM |
			 NETIF_F_HW_VLAN_CTAG_TX |
			 NETIF_F_HW_VLAN_CTAG_RX |
			 NETIF_F_HW_VLAN_CTAG_FILTER;

	if (si->num_rss)
		ndev->hw_features |= NETIF_F_RXHASH;

	if (si->errata & ENETC_ERR_TXCSUM) {
		ndev->hw_features &= ~NETIF_F_HW_CSUM;
		ndev->features &= ~NETIF_F_HW_CSUM;
	}

	ndev->priv_flags |= IFF_UNICAST_FLT;

	/* pick up primary MAC address from SI */
	enetc_get_primary_mac_addr(&si->hw, ndev->dev_addr);
}

static int enetc_of_get_phy(struct enetc_ndev_priv *priv)
{
	struct enetc_pf *pf = enetc_si_priv(priv->si);
	struct device_node *np = priv->dev->of_node;
	int err;

	if (!np) {
		dev_err(priv->dev, "missing ENETC port node\n");
		return -ENODEV;
	}

	priv->phy_node = of_parse_phandle(np, "phy-handle", 0);
	if (!priv->phy_node) {
		if (!of_phy_is_fixed_link(np)) {
			dev_err(priv->dev, "PHY not specified\n");
			return -ENODEV;
		}

		err = of_phy_register_fixed_link(np);
		if (err < 0) {
			dev_err(priv->dev, "fixed link registration failed\n");
			return err;
		}

		priv->phy_node = of_node_get(np);
	}

	if (!of_phy_is_fixed_link(np)) {
		err = enetc_mdio_probe(pf);
		if (err) {
			of_node_put(priv->phy_node);
			return err;
		}
	}

	priv->if_mode = of_get_phy_mode(np);
	if (priv->if_mode < 0) {
		dev_err(priv->dev, "missing phy type\n");
		of_node_put(priv->phy_node);
		if (of_phy_is_fixed_link(np))
			of_phy_deregister_fixed_link(np);
		else
			enetc_mdio_remove(pf);

		return -EINVAL;
	}

	return 0;
}

static void enetc_of_put_phy(struct enetc_ndev_priv *priv)
{
	struct device_node *np = priv->dev->of_node;

	if (np && of_phy_is_fixed_link(np))
		of_phy_deregister_fixed_link(np);
	if (priv->phy_node)
		of_node_put(priv->phy_node);
}

static int enetc_pf_probe(struct pci_dev *pdev,
			  const struct pci_device_id *ent)
{
	struct enetc_ndev_priv *priv;
	struct net_device *ndev;
	struct enetc_si *si;
	struct enetc_pf *pf;
	int err;

	if (pdev->dev.of_node && !of_device_is_available(pdev->dev.of_node)) {
		dev_info(&pdev->dev, "device is disabled, skipping\n");
		return -ENODEV;
	}

	err = enetc_pci_probe(pdev, KBUILD_MODNAME, sizeof(*pf));
	if (err) {
		dev_err(&pdev->dev, "PCI probing failed\n");
		return err;
	}

	si = pci_get_drvdata(pdev);
	if (!si->hw.port || !si->hw.global) {
		err = -ENODEV;
		dev_err(&pdev->dev, "could not map PF space, probing a VF?\n");
		goto err_map_pf_space;
	}

	pf = enetc_si_priv(si);
	pf->si = si;
	pf->total_vfs = pci_sriov_get_totalvfs(pdev);

	enetc_configure_port(pf);

	enetc_get_si_caps(si);

	ndev = alloc_etherdev_mq(sizeof(*priv), ENETC_MAX_NUM_TXQS);
	if (!ndev) {
		err = -ENOMEM;
		dev_err(&pdev->dev, "netdev creation failed\n");
		goto err_alloc_netdev;
	}

	enetc_pf_netdev_setup(si, ndev, &enetc_ndev_ops);

	priv = netdev_priv(ndev);

	enetc_init_si_rings_params(priv);

	err = enetc_alloc_si_resources(priv);
	if (err) {
		dev_err(&pdev->dev, "SI resource alloc failed\n");
		goto err_alloc_si_res;
	}

	err = enetc_alloc_msix(priv);
	if (err) {
		dev_err(&pdev->dev, "MSIX alloc failed\n");
		goto err_alloc_msix;
	}

	err = enetc_of_get_phy(priv);
	if (err)
		dev_warn(&pdev->dev, "Fallback to PHY-less operation\n");

	err = register_netdev(ndev);
	if (err)
		goto err_reg_netdev;

	netif_carrier_off(ndev);

	netif_info(priv, probe, ndev, "%s v%s\n",
		   enetc_drv_name, enetc_drv_ver);

	return 0;

err_reg_netdev:
	enetc_of_put_phy(priv);
	enetc_free_msix(priv);
err_alloc_msix:
	enetc_free_si_resources(priv);
err_alloc_si_res:
	si->ndev = NULL;
	free_netdev(ndev);
err_alloc_netdev:
err_map_pf_space:
	enetc_pci_remove(pdev);

	return err;
}

static void enetc_pf_remove(struct pci_dev *pdev)
{
	struct enetc_si *si = pci_get_drvdata(pdev);
	struct enetc_pf *pf = enetc_si_priv(si);
	struct enetc_ndev_priv *priv;

	if (pf->num_vfs)
		enetc_sriov_configure(pdev, 0);

	priv = netdev_priv(si->ndev);
	netif_info(priv, drv, si->ndev, "%s v%s remove\n",
		   enetc_drv_name, enetc_drv_ver);

	unregister_netdev(si->ndev);

	enetc_mdio_remove(pf);
	enetc_of_put_phy(priv);

	enetc_free_msix(priv);

	enetc_free_si_resources(priv);

	free_netdev(si->ndev);

	enetc_pci_remove(pdev);
}

static const struct pci_device_id enetc_pf_id_table[] = {
	{ PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_PF) },
	{ 0, } /* End of table. */
};
MODULE_DEVICE_TABLE(pci, enetc_pf_id_table);

static struct pci_driver enetc_pf_driver = {
	.name = KBUILD_MODNAME,
	.id_table = enetc_pf_id_table,
	.probe = enetc_pf_probe,
	.remove = enetc_pf_remove,
#ifdef CONFIG_PCI_IOV
	.sriov_configure = enetc_sriov_configure,
#endif
};
module_pci_driver(enetc_pf_driver);

MODULE_DESCRIPTION(ENETC_DRV_NAME_STR);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(ENETC_DRV_VER_STR);