summaryrefslogtreecommitdiff
path: root/drivers/net/tsec.c
blob: 5d12e4b7755857960d4909d1c5d53f53c4a7326f (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
// SPDX-License-Identifier: GPL-2.0+
/*
 * Freescale Three Speed Ethernet Controller driver
 *
 * Copyright 2004-2011, 2013 Freescale Semiconductor, Inc.
 * (C) Copyright 2003, Motorola, Inc.
 * author Andy Fleming
 */

#include <config.h>
#include <common.h>
#include <dm.h>
#include <malloc.h>
#include <net.h>
#include <command.h>
#include <tsec.h>
#include <fsl_mdio.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <asm/processor.h>
#include <asm/io.h>

#ifndef CONFIG_DM_ETH
/* Default initializations for TSEC controllers. */

static struct tsec_info_struct tsec_info[] = {
#ifdef CONFIG_TSEC1
	STD_TSEC_INFO(1),	/* TSEC1 */
#endif
#ifdef CONFIG_TSEC2
	STD_TSEC_INFO(2),	/* TSEC2 */
#endif
#ifdef CONFIG_MPC85XX_FEC
	{
		.regs = TSEC_GET_REGS(2, 0x2000),
		.devname = CONFIG_MPC85XX_FEC_NAME,
		.phyaddr = FEC_PHY_ADDR,
		.flags = FEC_FLAGS,
		.mii_devname = DEFAULT_MII_NAME
	},			/* FEC */
#endif
#ifdef CONFIG_TSEC3
	STD_TSEC_INFO(3),	/* TSEC3 */
#endif
#ifdef CONFIG_TSEC4
	STD_TSEC_INFO(4),	/* TSEC4 */
#endif
};
#endif /* CONFIG_DM_ETH */

#define TBIANA_SETTINGS ( \
		TBIANA_ASYMMETRIC_PAUSE \
		| TBIANA_SYMMETRIC_PAUSE \
		| TBIANA_FULL_DUPLEX \
		)

/* By default force the TBI PHY into 1000Mbps full duplex when in SGMII mode */
#ifndef CONFIG_TSEC_TBICR_SETTINGS
#define CONFIG_TSEC_TBICR_SETTINGS ( \
		TBICR_PHY_RESET \
		| TBICR_ANEG_ENABLE \
		| TBICR_FULL_DUPLEX \
		| TBICR_SPEED1_SET \
		)
#endif /* CONFIG_TSEC_TBICR_SETTINGS */

/* Configure the TBI for SGMII operation */
static void tsec_configure_serdes(struct tsec_private *priv)
{
	/*
	 * Access TBI PHY registers at given TSEC register offset as opposed
	 * to the register offset used for external PHY accesses
	 */
	tsec_local_mdio_write(priv->phyregs_sgmii, in_be32(&priv->regs->tbipa),
			      0, TBI_ANA, TBIANA_SETTINGS);
	tsec_local_mdio_write(priv->phyregs_sgmii, in_be32(&priv->regs->tbipa),
			      0, TBI_TBICON, TBICON_CLK_SELECT);
	tsec_local_mdio_write(priv->phyregs_sgmii, in_be32(&priv->regs->tbipa),
			      0, TBI_CR, CONFIG_TSEC_TBICR_SETTINGS);
}

/* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
 * and this is the ethernet-crc method needed for TSEC -- and perhaps
 * some other adapter -- hash tables
 */
#define CRCPOLY_LE 0xedb88320
static u32 ether_crc(size_t len, unsigned char const *p)
{
	int i;
	u32 crc;

	crc = ~0;
	while (len--) {
		crc ^= *p++;
		for (i = 0; i < 8; i++)
			crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
	}
	/* an reverse the bits, cuz of way they arrive -- last-first */
	crc = (crc >> 16) | (crc << 16);
	crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
	crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
	crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
	crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
	return crc;
}

/* CREDITS: linux gianfar driver, slightly adjusted... thanx. */

/* Set the appropriate hash bit for the given addr */

/*
 * The algorithm works like so:
 * 1) Take the Destination Address (ie the multicast address), and
 * do a CRC on it (little endian), and reverse the bits of the
 * result.
 * 2) Use the 8 most significant bits as a hash into a 256-entry
 * table.  The table is controlled through 8 32-bit registers:
 * gaddr0-7.  gaddr0's MSB is entry 0, and gaddr7's LSB is entry
 * 255.  This means that the 3 most significant bits in the
 * hash index which gaddr register to use, and the 5 other bits
 * indicate which bit (assuming an IBM numbering scheme, which
 * for PowerPC (tm) is usually the case) in the register holds
 * the entry.
 */
#ifndef CONFIG_DM_ETH
static int tsec_mcast_addr(struct eth_device *dev, const u8 *mcast_mac,
			   int join)
#else
static int tsec_mcast_addr(struct udevice *dev, const u8 *mcast_mac, int join)
#endif
{
	struct tsec_private *priv = (struct tsec_private *)dev->priv;
	struct tsec __iomem *regs = priv->regs;
	u32 result, value;
	u8 whichbit, whichreg;

	result = ether_crc(MAC_ADDR_LEN, mcast_mac);
	whichbit = (result >> 24) & 0x1f; /* the 5 LSB = which bit to set */
	whichreg = result >> 29; /* the 3 MSB = which reg to set it in */

	value = BIT(31 - whichbit);

	if (join)
		setbits_be32(&regs->hash.gaddr0 + whichreg, value);
	else
		clrbits_be32(&regs->hash.gaddr0 + whichreg, value);

	return 0;
}

/*
 * Initialized required registers to appropriate values, zeroing
 * those we don't care about (unless zero is bad, in which case,
 * choose a more appropriate value)
 */
static void init_registers(struct tsec __iomem *regs)
{
	/* Clear IEVENT */
	out_be32(&regs->ievent, IEVENT_INIT_CLEAR);

	out_be32(&regs->imask, IMASK_INIT_CLEAR);

	out_be32(&regs->hash.iaddr0, 0);
	out_be32(&regs->hash.iaddr1, 0);
	out_be32(&regs->hash.iaddr2, 0);
	out_be32(&regs->hash.iaddr3, 0);
	out_be32(&regs->hash.iaddr4, 0);
	out_be32(&regs->hash.iaddr5, 0);
	out_be32(&regs->hash.iaddr6, 0);
	out_be32(&regs->hash.iaddr7, 0);

	out_be32(&regs->hash.gaddr0, 0);
	out_be32(&regs->hash.gaddr1, 0);
	out_be32(&regs->hash.gaddr2, 0);
	out_be32(&regs->hash.gaddr3, 0);
	out_be32(&regs->hash.gaddr4, 0);
	out_be32(&regs->hash.gaddr5, 0);
	out_be32(&regs->hash.gaddr6, 0);
	out_be32(&regs->hash.gaddr7, 0);

	out_be32(&regs->rctrl, 0x00000000);

	/* Init RMON mib registers */
	memset((void *)&regs->rmon, 0, sizeof(regs->rmon));

	out_be32(&regs->rmon.cam1, 0xffffffff);
	out_be32(&regs->rmon.cam2, 0xffffffff);

	out_be32(&regs->mrblr, MRBLR_INIT_SETTINGS);

	out_be32(&regs->minflr, MINFLR_INIT_SETTINGS);

	out_be32(&regs->attr, ATTR_INIT_SETTINGS);
	out_be32(&regs->attreli, ATTRELI_INIT_SETTINGS);
}

/*
 * Configure maccfg2 based on negotiated speed and duplex
 * reported by PHY handling code
 */
static void adjust_link(struct tsec_private *priv, struct phy_device *phydev)
{
	struct tsec __iomem *regs = priv->regs;
	u32 ecntrl, maccfg2;

	if (!phydev->link) {
		printf("%s: No link.\n", phydev->dev->name);
		return;
	}

	/* clear all bits relative with interface mode */
	ecntrl = in_be32(&regs->ecntrl);
	ecntrl &= ~ECNTRL_R100;

	maccfg2 = in_be32(&regs->maccfg2);
	maccfg2 &= ~(MACCFG2_IF | MACCFG2_FULL_DUPLEX);

	if (phydev->duplex)
		maccfg2 |= MACCFG2_FULL_DUPLEX;

	switch (phydev->speed) {
	case 1000:
		maccfg2 |= MACCFG2_GMII;
		break;
	case 100:
	case 10:
		maccfg2 |= MACCFG2_MII;

		/*
		 * Set R100 bit in all modes although
		 * it is only used in RGMII mode
		 */
		if (phydev->speed == 100)
			ecntrl |= ECNTRL_R100;
		break;
	default:
		printf("%s: Speed was bad\n", phydev->dev->name);
		break;
	}

	out_be32(&regs->ecntrl, ecntrl);
	out_be32(&regs->maccfg2, maccfg2);

	printf("Speed: %d, %s duplex%s\n", phydev->speed,
	       (phydev->duplex) ? "full" : "half",
	       (phydev->port == PORT_FIBRE) ? ", fiber mode" : "");
}

/*
 * This returns the status bits of the device. The return value
 * is never checked, and this is what the 8260 driver did, so we
 * do the same. Presumably, this would be zero if there were no
 * errors
 */
#ifndef CONFIG_DM_ETH
static int tsec_send(struct eth_device *dev, void *packet, int length)
#else
static int tsec_send(struct udevice *dev, void *packet, int length)
#endif
{
	struct tsec_private *priv = (struct tsec_private *)dev->priv;
	struct tsec __iomem *regs = priv->regs;
	int result = 0;
	u16 status;
	int i;

	/* Find an empty buffer descriptor */
	for (i = 0;
	     in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_READY;
	     i++) {
		if (i >= TOUT_LOOP) {
			printf("%s: tsec: tx buffers full\n", dev->name);
			return result;
		}
	}

	out_be32(&priv->txbd[priv->tx_idx].bufptr, (u32)packet);
	out_be16(&priv->txbd[priv->tx_idx].length, length);
	status = in_be16(&priv->txbd[priv->tx_idx].status);
	out_be16(&priv->txbd[priv->tx_idx].status, status |
		(TXBD_READY | TXBD_LAST | TXBD_CRC | TXBD_INTERRUPT));

	/* Tell the DMA to go */
	out_be32(&regs->tstat, TSTAT_CLEAR_THALT);

	/* Wait for buffer to be transmitted */
	for (i = 0;
	     in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_READY;
	     i++) {
		if (i >= TOUT_LOOP) {
			printf("%s: tsec: tx error\n", dev->name);
			return result;
		}
	}

	priv->tx_idx = (priv->tx_idx + 1) % TX_BUF_CNT;
	result = in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_STATS;

	return result;
}

#ifndef CONFIG_DM_ETH
static int tsec_recv(struct eth_device *dev)
{
	struct tsec_private *priv = (struct tsec_private *)dev->priv;
	struct tsec __iomem *regs = priv->regs;

	while (!(in_be16(&priv->rxbd[priv->rx_idx].status) & RXBD_EMPTY)) {
		int length = in_be16(&priv->rxbd[priv->rx_idx].length);
		u16 status = in_be16(&priv->rxbd[priv->rx_idx].status);
		uchar *packet = net_rx_packets[priv->rx_idx];

		/* Send the packet up if there were no errors */
		if (!(status & RXBD_STATS))
			net_process_received_packet(packet, length - 4);
		else
			printf("Got error %x\n", (status & RXBD_STATS));

		out_be16(&priv->rxbd[priv->rx_idx].length, 0);

		status = RXBD_EMPTY;
		/* Set the wrap bit if this is the last element in the list */
		if ((priv->rx_idx + 1) == PKTBUFSRX)
			status |= RXBD_WRAP;
		out_be16(&priv->rxbd[priv->rx_idx].status, status);

		priv->rx_idx = (priv->rx_idx + 1) % PKTBUFSRX;
	}

	if (in_be32(&regs->ievent) & IEVENT_BSY) {
		out_be32(&regs->ievent, IEVENT_BSY);
		out_be32(&regs->rstat, RSTAT_CLEAR_RHALT);
	}

	return -1;
}
#else
static int tsec_recv(struct udevice *dev, int flags, uchar **packetp)
{
	struct tsec_private *priv = (struct tsec_private *)dev->priv;
	struct tsec __iomem *regs = priv->regs;
	int ret = -1;

	if (!(in_be16(&priv->rxbd[priv->rx_idx].status) & RXBD_EMPTY)) {
		int length = in_be16(&priv->rxbd[priv->rx_idx].length);
		u16 status = in_be16(&priv->rxbd[priv->rx_idx].status);
		u32 buf;

		/* Send the packet up if there were no errors */
		if (!(status & RXBD_STATS)) {
			buf = in_be32(&priv->rxbd[priv->rx_idx].bufptr);
			*packetp = (uchar *)buf;
			ret = length - 4;
		} else {
			printf("Got error %x\n", (status & RXBD_STATS));
		}
	}

	if (in_be32(&regs->ievent) & IEVENT_BSY) {
		out_be32(&regs->ievent, IEVENT_BSY);
		out_be32(&regs->rstat, RSTAT_CLEAR_RHALT);
	}

	return ret;
}

static int tsec_free_pkt(struct udevice *dev, uchar *packet, int length)
{
	struct tsec_private *priv = (struct tsec_private *)dev->priv;
	u16 status;

	out_be16(&priv->rxbd[priv->rx_idx].length, 0);

	status = RXBD_EMPTY;
	/* Set the wrap bit if this is the last element in the list */
	if ((priv->rx_idx + 1) == PKTBUFSRX)
		status |= RXBD_WRAP;
	out_be16(&priv->rxbd[priv->rx_idx].status, status);

	priv->rx_idx = (priv->rx_idx + 1) % PKTBUFSRX;

	return 0;
}
#endif

/* Stop the interface */
#ifndef CONFIG_DM_ETH
static void tsec_halt(struct eth_device *dev)
#else
static void tsec_halt(struct udevice *dev)
#endif
{
	struct tsec_private *priv = (struct tsec_private *)dev->priv;
	struct tsec __iomem *regs = priv->regs;

	clrbits_be32(&regs->dmactrl, DMACTRL_GRS | DMACTRL_GTS);
	setbits_be32(&regs->dmactrl, DMACTRL_GRS | DMACTRL_GTS);

	while ((in_be32(&regs->ievent) & (IEVENT_GRSC | IEVENT_GTSC))
			!= (IEVENT_GRSC | IEVENT_GTSC))
		;

	clrbits_be32(&regs->maccfg1, MACCFG1_TX_EN | MACCFG1_RX_EN);

	/* Shut down the PHY, as needed */
	phy_shutdown(priv->phydev);
}

#ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129
/*
 * When MACCFG1[Rx_EN] is enabled during system boot as part
 * of the eTSEC port initialization sequence,
 * the eTSEC Rx logic may not be properly initialized.
 */
void redundant_init(struct tsec_private *priv)
{
	struct tsec __iomem *regs = priv->regs;
	uint t, count = 0;
	int fail = 1;
	static const u8 pkt[] = {
		0x00, 0x1e, 0x4f, 0x12, 0xcb, 0x2c, 0x00, 0x25,
		0x64, 0xbb, 0xd1, 0xab, 0x08, 0x00, 0x45, 0x00,
		0x00, 0x5c, 0xdd, 0x22, 0x00, 0x00, 0x80, 0x01,
		0x1f, 0x71, 0x0a, 0xc1, 0x14, 0x22, 0x0a, 0xc1,
		0x14, 0x6a, 0x08, 0x00, 0xef, 0x7e, 0x02, 0x00,
		0x94, 0x05, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,
		0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e,
		0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,
		0x77, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
		0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
		0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
		0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
		0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70,
		0x71, 0x72};

	/* Enable promiscuous mode */
	setbits_be32(&regs->rctrl, 0x8);
	/* Enable loopback mode */
	setbits_be32(&regs->maccfg1, MACCFG1_LOOPBACK);
	/* Enable transmit and receive */
	setbits_be32(&regs->maccfg1, MACCFG1_RX_EN | MACCFG1_TX_EN);

	/* Tell the DMA it is clear to go */
	setbits_be32(&regs->dmactrl, DMACTRL_INIT_SETTINGS);
	out_be32(&regs->tstat, TSTAT_CLEAR_THALT);
	out_be32(&regs->rstat, RSTAT_CLEAR_RHALT);
	clrbits_be32(&regs->dmactrl, DMACTRL_GRS | DMACTRL_GTS);

	do {
		u16 status;

		tsec_send(priv->dev, (void *)pkt, sizeof(pkt));

		/* Wait for buffer to be received */
		for (t = 0;
		     in_be16(&priv->rxbd[priv->rx_idx].status) & RXBD_EMPTY;
		     t++) {
			if (t >= 10 * TOUT_LOOP) {
				printf("%s: tsec: rx error\n", priv->dev->name);
				break;
			}
		}

		if (!memcmp(pkt, net_rx_packets[priv->rx_idx], sizeof(pkt)))
			fail = 0;

		out_be16(&priv->rxbd[priv->rx_idx].length, 0);
		status = RXBD_EMPTY;
		if ((priv->rx_idx + 1) == PKTBUFSRX)
			status |= RXBD_WRAP;
		out_be16(&priv->rxbd[priv->rx_idx].status, status);
		priv->rx_idx = (priv->rx_idx + 1) % PKTBUFSRX;

		if (in_be32(&regs->ievent) & IEVENT_BSY) {
			out_be32(&regs->ievent, IEVENT_BSY);
			out_be32(&regs->rstat, RSTAT_CLEAR_RHALT);
		}
		if (fail) {
			printf("loopback recv packet error!\n");
			clrbits_be32(&regs->maccfg1, MACCFG1_RX_EN);
			udelay(1000);
			setbits_be32(&regs->maccfg1, MACCFG1_RX_EN);
		}
	} while ((count++ < 4) && (fail == 1));

	if (fail)
		panic("eTSEC init fail!\n");
	/* Disable promiscuous mode */
	clrbits_be32(&regs->rctrl, 0x8);
	/* Disable loopback mode */
	clrbits_be32(&regs->maccfg1, MACCFG1_LOOPBACK);
}
#endif

/*
 * Set up the buffers and their descriptors, and bring up the
 * interface
 */
static void startup_tsec(struct tsec_private *priv)
{
	struct tsec __iomem *regs = priv->regs;
	u16 status;
	int i;

	/* reset the indices to zero */
	priv->rx_idx = 0;
	priv->tx_idx = 0;
#ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129
	uint svr;
#endif

	/* Point to the buffer descriptors */
	out_be32(&regs->tbase, (u32)&priv->txbd[0]);
	out_be32(&regs->rbase, (u32)&priv->rxbd[0]);

	/* Initialize the Rx Buffer descriptors */
	for (i = 0; i < PKTBUFSRX; i++) {
		out_be16(&priv->rxbd[i].status, RXBD_EMPTY);
		out_be16(&priv->rxbd[i].length, 0);
		out_be32(&priv->rxbd[i].bufptr, (u32)net_rx_packets[i]);
	}
	status = in_be16(&priv->rxbd[PKTBUFSRX - 1].status);
	out_be16(&priv->rxbd[PKTBUFSRX - 1].status, status | RXBD_WRAP);

	/* Initialize the TX Buffer Descriptors */
	for (i = 0; i < TX_BUF_CNT; i++) {
		out_be16(&priv->txbd[i].status, 0);
		out_be16(&priv->txbd[i].length, 0);
		out_be32(&priv->txbd[i].bufptr, 0);
	}
	status = in_be16(&priv->txbd[TX_BUF_CNT - 1].status);
	out_be16(&priv->txbd[TX_BUF_CNT - 1].status, status | TXBD_WRAP);

#ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129
	svr = get_svr();
	if ((SVR_MAJ(svr) == 1) || IS_SVR_REV(svr, 2, 0))
		redundant_init(priv);
#endif
	/* Enable Transmit and Receive */
	setbits_be32(&regs->maccfg1, MACCFG1_RX_EN | MACCFG1_TX_EN);

	/* Tell the DMA it is clear to go */
	setbits_be32(&regs->dmactrl, DMACTRL_INIT_SETTINGS);
	out_be32(&regs->tstat, TSTAT_CLEAR_THALT);
	out_be32(&regs->rstat, RSTAT_CLEAR_RHALT);
	clrbits_be32(&regs->dmactrl, DMACTRL_GRS | DMACTRL_GTS);
}

/*
 * Initializes data structures and registers for the controller,
 * and brings the interface up. Returns the link status, meaning
 * that it returns success if the link is up, failure otherwise.
 * This allows U-Boot to find the first active controller.
 */
#ifndef CONFIG_DM_ETH
static int tsec_init(struct eth_device *dev, struct bd_info *bd)
#else
static int tsec_init(struct udevice *dev)
#endif
{
	struct tsec_private *priv = (struct tsec_private *)dev->priv;
#ifdef CONFIG_DM_ETH
	struct eth_pdata *pdata = dev_get_platdata(dev);
#else
	struct eth_device *pdata = dev;
#endif
	struct tsec __iomem *regs = priv->regs;
	u32 tempval;
	int ret;

	/* Make sure the controller is stopped */
	tsec_halt(dev);

	/* Init MACCFG2.  Defaults to GMII */
	out_be32(&regs->maccfg2, MACCFG2_INIT_SETTINGS);

	/* Init ECNTRL */
	out_be32(&regs->ecntrl, ECNTRL_INIT_SETTINGS);

	/*
	 * Copy the station address into the address registers.
	 * For a station address of 0x12345678ABCD in transmission
	 * order (BE), MACnADDR1 is set to 0xCDAB7856 and
	 * MACnADDR2 is set to 0x34120000.
	 */
	tempval = (pdata->enetaddr[5] << 24) | (pdata->enetaddr[4] << 16) |
		  (pdata->enetaddr[3] << 8)  |  pdata->enetaddr[2];

	out_be32(&regs->macstnaddr1, tempval);

	tempval = (pdata->enetaddr[1] << 24) | (pdata->enetaddr[0] << 16);

	out_be32(&regs->macstnaddr2, tempval);

	/* Clear out (for the most part) the other registers */
	init_registers(regs);

	/* Ready the device for tx/rx */
	startup_tsec(priv);

	/* Start up the PHY */
	ret = phy_startup(priv->phydev);
	if (ret) {
		printf("Could not initialize PHY %s\n",
		       priv->phydev->dev->name);
		return ret;
	}

	adjust_link(priv, priv->phydev);

	/* If there's no link, fail */
	return priv->phydev->link ? 0 : -1;
}

static phy_interface_t tsec_get_interface(struct tsec_private *priv)
{
	struct tsec __iomem *regs = priv->regs;
	u32 ecntrl;

	ecntrl = in_be32(&regs->ecntrl);

	if (ecntrl & ECNTRL_SGMII_MODE)
		return PHY_INTERFACE_MODE_SGMII;

	if (ecntrl & ECNTRL_TBI_MODE) {
		if (ecntrl & ECNTRL_REDUCED_MODE)
			return PHY_INTERFACE_MODE_RTBI;
		else
			return PHY_INTERFACE_MODE_TBI;
	}

	if (ecntrl & ECNTRL_REDUCED_MODE) {
		phy_interface_t interface;

		if (ecntrl & ECNTRL_REDUCED_MII_MODE)
			return PHY_INTERFACE_MODE_RMII;

		interface = priv->interface;

		/*
		 * This isn't autodetected, so it must
		 * be set by the platform code.
		 */
		if (interface == PHY_INTERFACE_MODE_RGMII_ID ||
		    interface == PHY_INTERFACE_MODE_RGMII_TXID ||
		    interface == PHY_INTERFACE_MODE_RGMII_RXID)
			return interface;

		return PHY_INTERFACE_MODE_RGMII;
	}

	if (priv->flags & TSEC_GIGABIT)
		return PHY_INTERFACE_MODE_GMII;

	return PHY_INTERFACE_MODE_MII;
}

/*
 * Discover which PHY is attached to the device, and configure it
 * properly.  If the PHY is not recognized, then return 0
 * (failure).  Otherwise, return 1
 */
static int init_phy(struct tsec_private *priv)
{
	struct phy_device *phydev;
	struct tsec __iomem *regs = priv->regs;
	u32 supported = (SUPPORTED_10baseT_Half |
			SUPPORTED_10baseT_Full |
			SUPPORTED_100baseT_Half |
			SUPPORTED_100baseT_Full);

	if (priv->flags & TSEC_GIGABIT)
		supported |= SUPPORTED_1000baseT_Full;

	/* Assign a Physical address to the TBI */
	out_be32(&regs->tbipa, priv->tbiaddr);

	priv->interface = tsec_get_interface(priv);

	if (priv->interface == PHY_INTERFACE_MODE_SGMII)
		tsec_configure_serdes(priv);

	phydev = phy_connect(priv->bus, priv->phyaddr, priv->dev,
			     priv->interface);
	if (!phydev)
		return 0;

	phydev->supported &= supported;
	phydev->advertising = phydev->supported;

	priv->phydev = phydev;

	phy_config(phydev);

	return 1;
}

#ifndef CONFIG_DM_ETH
/*
 * Initialize device structure. Returns success if PHY
 * initialization succeeded (i.e. if it recognizes the PHY)
 */
static int tsec_initialize(struct bd_info *bis,
			   struct tsec_info_struct *tsec_info)
{
	struct tsec_private *priv;
	struct eth_device *dev;
	int i;

	dev = (struct eth_device *)malloc(sizeof(*dev));

	if (!dev)
		return 0;

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

	priv = (struct tsec_private *)malloc(sizeof(*priv));

	if (!priv) {
		free(dev);
		return 0;
	}

	priv->regs = tsec_info->regs;
	priv->phyregs_sgmii = tsec_info->miiregs_sgmii;

	priv->phyaddr = tsec_info->phyaddr;
	priv->tbiaddr = CONFIG_SYS_TBIPA_VALUE;
	priv->flags = tsec_info->flags;

	strcpy(dev->name, tsec_info->devname);
	priv->interface = tsec_info->interface;
	priv->bus = miiphy_get_dev_by_name(tsec_info->mii_devname);
	priv->dev = dev;
	dev->iobase = 0;
	dev->priv = priv;
	dev->init = tsec_init;
	dev->halt = tsec_halt;
	dev->send = tsec_send;
	dev->recv = tsec_recv;
	dev->mcast = tsec_mcast_addr;

	/* Tell U-Boot to get the addr from the env */
	for (i = 0; i < 6; i++)
		dev->enetaddr[i] = 0;

	eth_register(dev);

	/* Reset the MAC */
	setbits_be32(&priv->regs->maccfg1, MACCFG1_SOFT_RESET);
	udelay(2);  /* Soft Reset must be asserted for 3 TX clocks */
	clrbits_be32(&priv->regs->maccfg1, MACCFG1_SOFT_RESET);

	/* Try to initialize PHY here, and return */
	return init_phy(priv);
}

/*
 * Initialize all the TSEC devices
 *
 * Returns the number of TSEC devices that were initialized
 */
int tsec_eth_init(struct bd_info *bis, struct tsec_info_struct *tsecs,
		  int num)
{
	int i;
	int count = 0;

	for (i = 0; i < num; i++) {
		int ret = tsec_initialize(bis, &tsecs[i]);

		if (ret > 0)
			count += ret;
	}

	return count;
}

int tsec_standard_init(struct bd_info *bis)
{
	struct fsl_pq_mdio_info info;

	info.regs = TSEC_GET_MDIO_REGS_BASE(1);
	info.name = DEFAULT_MII_NAME;

	fsl_pq_mdio_init(bis, &info);

	return tsec_eth_init(bis, tsec_info, ARRAY_SIZE(tsec_info));
}
#else /* CONFIG_DM_ETH */
int tsec_probe(struct udevice *dev)
{
	struct eth_pdata *pdata = dev_get_platdata(dev);
	struct tsec_private *priv = dev_get_priv(dev);
	struct tsec_mii_mng __iomem *ext_phyregs_mii;
	struct ofnode_phandle_args phandle_args;
	u32 tbiaddr = CONFIG_SYS_TBIPA_VALUE;
	struct fsl_pq_mdio_info mdio_info;
	const char *phy_mode;
	fdt_addr_t reg;
	ofnode parent;
	int ret;

	pdata->iobase = (phys_addr_t)dev_read_addr(dev);
	priv->regs = dev_remap_addr(dev);

	if (dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
				       &phandle_args)) {
		printf("phy-handle does not exist under tsec %s\n", dev->name);
		return -ENOENT;
	} else {
		int reg = ofnode_read_u32_default(phandle_args.node, "reg", 0);

		priv->phyaddr = reg;
	}

	parent = ofnode_get_parent(phandle_args.node);
	if (!ofnode_valid(parent)) {
		printf("No parent node for PHY?\n");
		return -ENOENT;
	}

	reg = ofnode_get_addr_index(parent, 0);
	if (reg == FDT_ADDR_T_NONE) {
		printf("No 'reg' property of MII for external PHY\n");
		return -ENOENT;
	}

	ext_phyregs_mii = map_physmem(reg + TSEC_MDIO_REGS_OFFSET, 0,
				      MAP_NOCACHE);

	ret = dev_read_phandle_with_args(dev, "tbi-handle", NULL, 0, 0,
					 &phandle_args);
	if (ret == 0) {
		ofnode_read_u32(phandle_args.node, "reg", &tbiaddr);

		parent = ofnode_get_parent(phandle_args.node);
		if (!ofnode_valid(parent)) {
			printf("No parent node for TBI PHY?\n");
			return -ENOENT;
		}

		reg = ofnode_get_addr_index(parent, 0);
		if (reg == FDT_ADDR_T_NONE) {
			printf("No 'reg' property of MII for TBI PHY\n");
			return -ENOENT;
		}

		priv->phyregs_sgmii = map_physmem(reg + TSEC_MDIO_REGS_OFFSET,
						  0, MAP_NOCACHE);
	}

	priv->tbiaddr = tbiaddr;

	phy_mode = dev_read_prop(dev, "phy-connection-type", NULL);
	if (phy_mode)
		pdata->phy_interface = phy_get_interface_by_name(phy_mode);
	if (pdata->phy_interface == -1) {
		printf("Invalid PHY interface '%s'\n", phy_mode);
		return -EINVAL;
	}
	priv->interface = pdata->phy_interface;

	/* Initialize flags */
	priv->flags = TSEC_GIGABIT;
	if (priv->interface == PHY_INTERFACE_MODE_SGMII)
		priv->flags |= TSEC_SGMII;

	mdio_info.regs = ext_phyregs_mii;
	mdio_info.name = (char *)dev->name;
	ret = fsl_pq_mdio_init(NULL, &mdio_info);
	if (ret)
		return ret;

	/* Reset the MAC */
	setbits_be32(&priv->regs->maccfg1, MACCFG1_SOFT_RESET);
	udelay(2);  /* Soft Reset must be asserted for 3 TX clocks */
	clrbits_be32(&priv->regs->maccfg1, MACCFG1_SOFT_RESET);

	priv->dev = dev;
	priv->bus = miiphy_get_dev_by_name(dev->name);

	/* Try to initialize PHY here, and return */
	return !init_phy(priv);
}

int tsec_remove(struct udevice *dev)
{
	struct tsec_private *priv = dev->priv;

	free(priv->phydev);
	mdio_unregister(priv->bus);
	mdio_free(priv->bus);

	return 0;
}

static const struct eth_ops tsec_ops = {
	.start = tsec_init,
	.send = tsec_send,
	.recv = tsec_recv,
	.free_pkt = tsec_free_pkt,
	.stop = tsec_halt,
	.mcast = tsec_mcast_addr,
};

static const struct udevice_id tsec_ids[] = {
	{ .compatible = "fsl,etsec2" },
	{ }
};

U_BOOT_DRIVER(eth_tsec) = {
	.name = "tsec",
	.id = UCLASS_ETH,
	.of_match = tsec_ids,
	.probe = tsec_probe,
	.remove = tsec_remove,
	.ops = &tsec_ops,
	.priv_auto_alloc_size = sizeof(struct tsec_private),
	.platdata_auto_alloc_size = sizeof(struct eth_pdata),
	.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
#endif /* CONFIG_DM_ETH */