summaryrefslogtreecommitdiff
path: root/drivers/usb/eth/asix88179.c
blob: 7548269f958a9d2ad85ce1211af9fad1bf4dd956 (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
/*
 * Copyright (c) 2014 Rene Griessl <rgriessl@cit-ec.uni-bielefeld.de>
 * based on the U-Boot Asix driver as well as information
 * from the Linux AX88179_178a driver
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <dm.h>
#include <usb.h>
#include <net.h>
#include <linux/mii.h>
#include "usb_ether.h"
#include <malloc.h>
#include <memalign.h>
#include <errno.h>

/* ASIX AX88179 based USB 3.0 Ethernet Devices */
#define AX88179_PHY_ID				0x03
#define AX_EEPROM_LEN				0x100
#define AX88179_EEPROM_MAGIC			0x17900b95
#define AX_MCAST_FLTSIZE			8
#define AX_MAX_MCAST				64
#define AX_INT_PPLS_LINK			(1 << 16)
#define AX_RXHDR_L4_TYPE_MASK			0x1c
#define AX_RXHDR_L4_TYPE_UDP			4
#define AX_RXHDR_L4_TYPE_TCP			16
#define AX_RXHDR_L3CSUM_ERR			2
#define AX_RXHDR_L4CSUM_ERR			1
#define AX_RXHDR_CRC_ERR			(1 << 29)
#define AX_RXHDR_DROP_ERR			(1 << 31)
#define AX_ENDPOINT_INT				0x01
#define AX_ENDPOINT_IN				0x02
#define AX_ENDPOINT_OUT				0x03
#define AX_ACCESS_MAC				0x01
#define AX_ACCESS_PHY				0x02
#define AX_ACCESS_EEPROM			0x04
#define AX_ACCESS_EFUS				0x05
#define AX_PAUSE_WATERLVL_HIGH			0x54
#define AX_PAUSE_WATERLVL_LOW			0x55

#define PHYSICAL_LINK_STATUS			0x02
	#define	AX_USB_SS		(1 << 2)
	#define	AX_USB_HS		(1 << 1)

#define GENERAL_STATUS				0x03
	#define	AX_SECLD		(1 << 2)

#define AX_SROM_ADDR				0x07
#define AX_SROM_CMD				0x0a
	#define EEP_RD			(1 << 2)
	#define EEP_BUSY		(1 << 4)

#define AX_SROM_DATA_LOW			0x08
#define AX_SROM_DATA_HIGH			0x09

#define AX_RX_CTL				0x0b
	#define AX_RX_CTL_DROPCRCERR	(1 << 8)
	#define AX_RX_CTL_IPE		(1 << 9)
	#define AX_RX_CTL_START		(1 << 7)
	#define AX_RX_CTL_AP		(1 << 5)
	#define AX_RX_CTL_AM		(1 << 4)
	#define AX_RX_CTL_AB		(1 << 3)
	#define AX_RX_CTL_AMALL		(1 << 1)
	#define AX_RX_CTL_PRO		(1 << 0)
	#define AX_RX_CTL_STOP		0

#define AX_NODE_ID				0x10
#define AX_MULFLTARY				0x16

#define AX_MEDIUM_STATUS_MODE			0x22
	#define AX_MEDIUM_GIGAMODE	(1 << 0)
	#define AX_MEDIUM_FULL_DUPLEX	(1 << 1)
	#define AX_MEDIUM_EN_125MHZ	(1 << 3)
	#define AX_MEDIUM_RXFLOW_CTRLEN	(1 << 4)
	#define AX_MEDIUM_TXFLOW_CTRLEN	(1 << 5)
	#define AX_MEDIUM_RECEIVE_EN	(1 << 8)
	#define AX_MEDIUM_PS		(1 << 9)
	#define AX_MEDIUM_JUMBO_EN	0x8040

#define AX_MONITOR_MOD				0x24
	#define AX_MONITOR_MODE_RWLC	(1 << 1)
	#define AX_MONITOR_MODE_RWMP	(1 << 2)
	#define AX_MONITOR_MODE_PMEPOL	(1 << 5)
	#define AX_MONITOR_MODE_PMETYPE	(1 << 6)

#define AX_GPIO_CTRL				0x25
	#define AX_GPIO_CTRL_GPIO3EN	(1 << 7)
	#define AX_GPIO_CTRL_GPIO2EN	(1 << 6)
	#define AX_GPIO_CTRL_GPIO1EN	(1 << 5)

#define AX_PHYPWR_RSTCTL			0x26
	#define AX_PHYPWR_RSTCTL_BZ	(1 << 4)
	#define AX_PHYPWR_RSTCTL_IPRL	(1 << 5)
	#define AX_PHYPWR_RSTCTL_AT	(1 << 12)

#define AX_RX_BULKIN_QCTRL			0x2e
#define AX_CLK_SELECT				0x33
	#define AX_CLK_SELECT_BCS	(1 << 0)
	#define AX_CLK_SELECT_ACS	(1 << 1)
	#define AX_CLK_SELECT_ULR	(1 << 3)

#define AX_RXCOE_CTL				0x34
	#define AX_RXCOE_IP		(1 << 0)
	#define AX_RXCOE_TCP		(1 << 1)
	#define AX_RXCOE_UDP		(1 << 2)
	#define AX_RXCOE_TCPV6		(1 << 5)
	#define AX_RXCOE_UDPV6		(1 << 6)

#define AX_TXCOE_CTL				0x35
	#define AX_TXCOE_IP		(1 << 0)
	#define AX_TXCOE_TCP		(1 << 1)
	#define AX_TXCOE_UDP		(1 << 2)
	#define AX_TXCOE_TCPV6		(1 << 5)
	#define AX_TXCOE_UDPV6		(1 << 6)

#define AX_LEDCTRL				0x73

#define GMII_PHY_PHYSR				0x11
	#define GMII_PHY_PHYSR_SMASK	0xc000
	#define GMII_PHY_PHYSR_GIGA	(1 << 15)
	#define GMII_PHY_PHYSR_100	(1 << 14)
	#define GMII_PHY_PHYSR_FULL	(1 << 13)
	#define GMII_PHY_PHYSR_LINK	(1 << 10)

#define GMII_LED_ACT				0x1a
	#define	GMII_LED_ACTIVE_MASK	0xff8f
	#define	GMII_LED0_ACTIVE	(1 << 4)
	#define	GMII_LED1_ACTIVE	(1 << 5)
	#define	GMII_LED2_ACTIVE	(1 << 6)

#define GMII_LED_LINK				0x1c
	#define	GMII_LED_LINK_MASK	0xf888
	#define	GMII_LED0_LINK_10	(1 << 0)
	#define	GMII_LED0_LINK_100	(1 << 1)
	#define	GMII_LED0_LINK_1000	(1 << 2)
	#define	GMII_LED1_LINK_10	(1 << 4)
	#define	GMII_LED1_LINK_100	(1 << 5)
	#define	GMII_LED1_LINK_1000	(1 << 6)
	#define	GMII_LED2_LINK_10	(1 << 8)
	#define	GMII_LED2_LINK_100	(1 << 9)
	#define	GMII_LED2_LINK_1000	(1 << 10)
	#define	LED0_ACTIVE		(1 << 0)
	#define	LED0_LINK_10		(1 << 1)
	#define	LED0_LINK_100		(1 << 2)
	#define	LED0_LINK_1000		(1 << 3)
	#define	LED0_FD			(1 << 4)
	#define	LED0_USB3_MASK		0x001f
	#define	LED1_ACTIVE		(1 << 5)
	#define	LED1_LINK_10		(1 << 6)
	#define	LED1_LINK_100		(1 << 7)
	#define	LED1_LINK_1000		(1 << 8)
	#define	LED1_FD			(1 << 9)
	#define	LED1_USB3_MASK		0x03e0
	#define	LED2_ACTIVE		(1 << 10)
	#define	LED2_LINK_1000		(1 << 13)
	#define	LED2_LINK_100		(1 << 12)
	#define	LED2_LINK_10		(1 << 11)
	#define	LED2_FD			(1 << 14)
	#define	LED_VALID		(1 << 15)
	#define	LED2_USB3_MASK		0x7c00

#define GMII_PHYPAGE				0x1e
#define GMII_PHY_PAGE_SELECT			0x1f
	#define GMII_PHY_PGSEL_EXT	0x0007
	#define GMII_PHY_PGSEL_PAGE0	0x0000

/* local defines */
#define ASIX_BASE_NAME "axg"
#define USB_CTRL_SET_TIMEOUT 5000
#define USB_CTRL_GET_TIMEOUT 5000
#define USB_BULK_SEND_TIMEOUT 5000
#define USB_BULK_RECV_TIMEOUT 5000

#define AX_RX_URB_SIZE 1024 * 0x12
#define BLK_FRAME_SIZE 0x200
#define PHY_CONNECT_TIMEOUT 5000

#define TIMEOUT_RESOLUTION 50	/* ms */

#define FLAG_NONE			0
#define FLAG_TYPE_AX88179	(1U << 0)
#define FLAG_TYPE_AX88178a	(1U << 1)
#define FLAG_TYPE_DLINK_DUB1312	(1U << 2)
#define FLAG_TYPE_SITECOM	(1U << 3)
#define FLAG_TYPE_SAMSUNG	(1U << 4)
#define FLAG_TYPE_LENOVO	(1U << 5)
#define FLAG_TYPE_GX3		(1U << 6)

/* local vars */
static const struct {
	unsigned char ctrl, timer_l, timer_h, size, ifg;
} AX88179_BULKIN_SIZE[] =	{
	{7, 0x4f, 0,	0x02, 0xff},
	{7, 0x20, 3,	0x03, 0xff},
	{7, 0xae, 7,	0x04, 0xff},
	{7, 0xcc, 0x4c, 0x04, 8},
};

#ifndef CONFIG_DM_ETH
static int curr_eth_dev; /* index for name of next device detected */
#endif

/* driver private */
struct asix_private {
#ifdef CONFIG_DM_ETH
	struct ueth_data ueth;
	unsigned pkt_cnt;
	uint8_t *pkt_data;
	uint32_t *pkt_hdr;
#endif
	int flags;
	int rx_urb_size;
	int maxpacketsize;
};

/*
 * Asix infrastructure commands
 */
static int asix_write_cmd(struct ueth_data *dev, u8 cmd, u16 value, u16 index,
			     u16 size, void *data)
{
	int len;
	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buf, size);

	debug("asix_write_cmd() cmd=0x%02x value=0x%04x index=0x%04x size=%d\n",
	      cmd, value, index, size);

	memcpy(buf, data, size);

	len = usb_control_msg(
		dev->pusb_dev,
		usb_sndctrlpipe(dev->pusb_dev, 0),
		cmd,
		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
		value,
		index,
		buf,
		size,
		USB_CTRL_SET_TIMEOUT);

	return len == size ? 0 : ECOMM;
}

static int asix_read_cmd(struct ueth_data *dev, u8 cmd, u16 value, u16 index,
			    u16 size, void *data)
{
	int len;
	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buf, size);

	debug("asix_read_cmd() cmd=0x%02x value=0x%04x index=0x%04x size=%d\n",
	      cmd, value, index, size);

	len = usb_control_msg(
		dev->pusb_dev,
		usb_rcvctrlpipe(dev->pusb_dev, 0),
		cmd,
		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
		value,
		index,
		buf,
		size,
		USB_CTRL_GET_TIMEOUT);

	memcpy(data, buf, size);

	return len == size ? 0 : ECOMM;
}

static int asix_read_mac(struct ueth_data *dev, uint8_t *enetaddr)
{
	int ret;

	ret = asix_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, 6, 6, enetaddr);
	if (ret < 0)
		debug("Failed to read MAC address: %02x\n", ret);

	return ret;
}

static int asix_write_mac(struct ueth_data *dev, uint8_t *enetaddr)
{
	int ret;

	ret = asix_write_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN,
				 ETH_ALEN, enetaddr);
	if (ret < 0)
		debug("Failed to set MAC address: %02x\n", ret);

	return ret;
}

static int asix_basic_reset(struct ueth_data *dev,
			struct asix_private *dev_priv)
{
	u8 buf[5];
	u16 *tmp16;
	u8 *tmp;

	tmp16 = (u16 *)buf;
	tmp = (u8 *)buf;

	/* Power up ethernet PHY */
	*tmp16 = 0;
	asix_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);

	*tmp16 = AX_PHYPWR_RSTCTL_IPRL;
	asix_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
	mdelay(200);

	*tmp = AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS;
	asix_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, tmp);
	mdelay(200);

	/* RX bulk configuration */
	memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
	asix_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);

	dev_priv->rx_urb_size = 128 * 20;

	/* Water Level configuration */
	*tmp = 0x34;
	asix_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_LOW, 1, 1, tmp);

	*tmp = 0x52;
	asix_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_HIGH, 1, 1, tmp);

	/* Enable checksum offload */
	*tmp = AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP |
	       AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6;
	asix_write_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, tmp);

	*tmp = AX_TXCOE_IP | AX_TXCOE_TCP | AX_TXCOE_UDP |
	       AX_TXCOE_TCPV6 | AX_TXCOE_UDPV6;
	asix_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, tmp);

	/* Configure RX control register => start operation */
	*tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START |
		 AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB;
	asix_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, tmp16);

	*tmp = AX_MONITOR_MODE_PMETYPE | AX_MONITOR_MODE_PMEPOL |
	       AX_MONITOR_MODE_RWMP;
	asix_write_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD, 1, 1, tmp);

	/* Configure default medium type => giga */
	*tmp16 = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN |
		 AX_MEDIUM_RXFLOW_CTRLEN | AX_MEDIUM_FULL_DUPLEX |
		 AX_MEDIUM_GIGAMODE | AX_MEDIUM_JUMBO_EN;
	asix_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE, 2, 2, tmp16);

	u16 adv = 0;
	adv = ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_LPACK |
	      ADVERTISE_NPAGE | ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP;
	asix_write_cmd(dev, AX_ACCESS_PHY, 0x03, MII_ADVERTISE, 2, &adv);

	adv = ADVERTISE_1000FULL;
	asix_write_cmd(dev, AX_ACCESS_PHY, 0x03, MII_CTRL1000, 2, &adv);

	return 0;
}

static int asix_wait_link(struct ueth_data *dev)
{
	int timeout = 0;
	int link_detected;
	u8 buf[2];
	u16 *tmp16;

	tmp16 = (u16 *)buf;

	do {
		asix_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			      MII_BMSR, 2, buf);
		link_detected = *tmp16 & BMSR_LSTATUS;
		if (!link_detected) {
			if (timeout == 0)
				printf("Waiting for Ethernet connection... ");
			mdelay(TIMEOUT_RESOLUTION);
			timeout += TIMEOUT_RESOLUTION;
		}
	} while (!link_detected && timeout < PHY_CONNECT_TIMEOUT);

	if (link_detected) {
		if (timeout > 0)
			printf("done.\n");
		return 0;
	} else {
		printf("unable to connect.\n");
		return -ENETUNREACH;
	}
}

static int asix_init_common(struct ueth_data *dev,
			struct asix_private *dev_priv)
{
	u8 buf[2], tmp[5], link_sts;
	u16 *tmp16, mode;


	tmp16 = (u16 *)buf;

	debug("** %s()\n", __func__);

	/* Configure RX control register => start operation */
	*tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START |
		 AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB;
	if (asix_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, tmp16) != 0)
		goto out_err;

	if (asix_wait_link(dev) != 0) {
		/*reset device and try again*/
		printf("Reset Ethernet Device\n");
		asix_basic_reset(dev, dev_priv);
		if (asix_wait_link(dev) != 0)
			goto out_err;
	}

	/* Configure link */
	mode = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN |
	       AX_MEDIUM_RXFLOW_CTRLEN;

	asix_read_cmd(dev, AX_ACCESS_MAC, PHYSICAL_LINK_STATUS,
		      1, 1, &link_sts);

	asix_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
		      GMII_PHY_PHYSR, 2, tmp16);

	if (!(*tmp16 & GMII_PHY_PHYSR_LINK)) {
		return 0;
	} else if (GMII_PHY_PHYSR_GIGA == (*tmp16 & GMII_PHY_PHYSR_SMASK)) {
		mode |= AX_MEDIUM_GIGAMODE | AX_MEDIUM_EN_125MHZ |
			AX_MEDIUM_JUMBO_EN;

		if (link_sts & AX_USB_SS)
			memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
		else if (link_sts & AX_USB_HS)
			memcpy(tmp, &AX88179_BULKIN_SIZE[1], 5);
		else
			memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
	} else if (GMII_PHY_PHYSR_100 == (*tmp16 & GMII_PHY_PHYSR_SMASK)) {
		mode |= AX_MEDIUM_PS;

		if (link_sts & (AX_USB_SS | AX_USB_HS))
			memcpy(tmp, &AX88179_BULKIN_SIZE[2], 5);
		else
			memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
	} else {
		memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
	}

	/* RX bulk configuration */
	asix_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);

	dev_priv->rx_urb_size = (1024 * (tmp[3] + 2));
	if (*tmp16 & GMII_PHY_PHYSR_FULL)
		mode |= AX_MEDIUM_FULL_DUPLEX;
	asix_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
		       2, 2, &mode);

	return 0;
out_err:
	return -1;
}

static int asix_send_common(struct ueth_data *dev,
			struct asix_private *dev_priv,
			void *packet, int length)
{
	int err;
	u32 packet_len, tx_hdr2;
	int actual_len, framesize;
	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, msg,
				 PKTSIZE + (2 * sizeof(packet_len)));

	debug("** %s(), len %d\n", __func__, length);

	packet_len = length;
	cpu_to_le32s(&packet_len);

	memcpy(msg, &packet_len, sizeof(packet_len));
	framesize = dev_priv->maxpacketsize;
	tx_hdr2 = 0;
	if (((length + 8) % framesize) == 0)
		tx_hdr2 |= 0x80008000;	/* Enable padding */

	cpu_to_le32s(&tx_hdr2);

	memcpy(msg + sizeof(packet_len), &tx_hdr2, sizeof(tx_hdr2));

	memcpy(msg + sizeof(packet_len) + sizeof(tx_hdr2),
	       (void *)packet, length);

	err = usb_bulk_msg(dev->pusb_dev,
				usb_sndbulkpipe(dev->pusb_dev, dev->ep_out),
				(void *)msg,
				length + sizeof(packet_len) + sizeof(tx_hdr2),
				&actual_len,
				USB_BULK_SEND_TIMEOUT);
	debug("Tx: len = %zu, actual = %u, err = %d\n",
	      length + sizeof(packet_len), actual_len, err);

	return err;
}

#ifndef CONFIG_DM_ETH
/*
 * Asix callbacks
 */
static int asix_init(struct eth_device *eth, bd_t *bd)
{
	struct ueth_data *dev = (struct ueth_data *)eth->priv;
	struct asix_private *dev_priv = (struct asix_private *)dev->dev_priv;

	return asix_init_common(dev, dev_priv);
}

static int asix_write_hwaddr(struct eth_device *eth)
{
	struct ueth_data *dev = (struct ueth_data *)eth->priv;

	return asix_write_mac(dev, eth->enetaddr);
}

static int asix_send(struct eth_device *eth, void *packet, int length)
{
	struct ueth_data *dev = (struct ueth_data *)eth->priv;
	struct asix_private *dev_priv = (struct asix_private *)dev->dev_priv;

	return asix_send_common(dev, dev_priv, packet, length);
}

static int asix_recv(struct eth_device *eth)
{
	struct ueth_data *dev = (struct ueth_data *)eth->priv;
	struct asix_private *dev_priv = (struct asix_private *)dev->dev_priv;

	u16 frame_pos;
	int err;
	int actual_len;

	int pkt_cnt;
	u32 rx_hdr;
	u16 hdr_off;
	u32 *pkt_hdr;
	ALLOC_CACHE_ALIGN_BUFFER(u8, recv_buf, dev_priv->rx_urb_size);

	actual_len = -1;

	debug("** %s()\n", __func__);

	err = usb_bulk_msg(dev->pusb_dev,
				usb_rcvbulkpipe(dev->pusb_dev, dev->ep_in),
				(void *)recv_buf,
				dev_priv->rx_urb_size,
				&actual_len,
				USB_BULK_RECV_TIMEOUT);
	debug("Rx: len = %u, actual = %u, err = %d\n", dev_priv->rx_urb_size,
	      actual_len, err);

	if (err != 0) {
		debug("Rx: failed to receive\n");
		return -ECOMM;
	}
	if (actual_len > dev_priv->rx_urb_size) {
		debug("Rx: received too many bytes %d\n", actual_len);
		return -EMSGSIZE;
	}


	rx_hdr = *(u32 *)(recv_buf + actual_len - 4);
	le32_to_cpus(&rx_hdr);

	pkt_cnt = (u16)rx_hdr;
	hdr_off = (u16)(rx_hdr >> 16);
	pkt_hdr = (u32 *)(recv_buf + hdr_off);


	frame_pos = 0;

	while (pkt_cnt--) {
		u16 pkt_len;

		le32_to_cpus(pkt_hdr);
		pkt_len = (*pkt_hdr >> 16) & 0x1fff;

		frame_pos += 2;

		net_process_received_packet(recv_buf + frame_pos, pkt_len);

		pkt_hdr++;
		frame_pos += ((pkt_len + 7) & 0xFFF8)-2;

		if (pkt_cnt == 0)
			return 0;
	}
	return err;
}

static void asix_halt(struct eth_device *eth)
{
	debug("** %s()\n", __func__);
}

/*
 * Asix probing functions
 */
void ax88179_eth_before_probe(void)
{
	curr_eth_dev = 0;
}

struct asix_dongle {
	unsigned short vendor;
	unsigned short product;
	int flags;
};

static const struct asix_dongle asix_dongles[] = {
	{ 0x0b95, 0x1790, FLAG_TYPE_AX88179 },
	{ 0x0b95, 0x178a, FLAG_TYPE_AX88178a },
	{ 0x2001, 0x4a00, FLAG_TYPE_DLINK_DUB1312 },
	{ 0x0df6, 0x0072, FLAG_TYPE_SITECOM },
	{ 0x04e8, 0xa100, FLAG_TYPE_SAMSUNG },
	{ 0x17ef, 0x304b, FLAG_TYPE_LENOVO },
	{ 0x04b4, 0x3610, FLAG_TYPE_GX3 },
	{ 0x0000, 0x0000, FLAG_NONE }	/* END - Do not remove */
};

/* Probe to see if a new device is actually an asix device */
int ax88179_eth_probe(struct usb_device *dev, unsigned int ifnum,
		      struct ueth_data *ss)
{
	struct usb_interface *iface;
	struct usb_interface_descriptor *iface_desc;
	struct asix_private *dev_priv;
	int ep_in_found = 0, ep_out_found = 0;
	int i;

	/* let's examine the device now */
	iface = &dev->config.if_desc[ifnum];
	iface_desc = &dev->config.if_desc[ifnum].desc;

	for (i = 0; asix_dongles[i].vendor != 0; i++) {
		if (dev->descriptor.idVendor == asix_dongles[i].vendor &&
		    dev->descriptor.idProduct == asix_dongles[i].product)
			/* Found a supported dongle */
			break;
	}

	if (asix_dongles[i].vendor == 0)
		return 0;

	memset(ss, 0, sizeof(struct ueth_data));

	/* At this point, we know we've got a live one */
	debug("\n\nUSB Ethernet device detected: %#04x:%#04x\n",
	      dev->descriptor.idVendor, dev->descriptor.idProduct);

	/* Initialize the ueth_data structure with some useful info */
	ss->ifnum = ifnum;
	ss->pusb_dev = dev;
	ss->subclass = iface_desc->bInterfaceSubClass;
	ss->protocol = iface_desc->bInterfaceProtocol;

	/* alloc driver private */
	ss->dev_priv = calloc(1, sizeof(struct asix_private));
	if (!ss->dev_priv)
		return 0;
	dev_priv = ss->dev_priv;
	dev_priv->flags = asix_dongles[i].flags;

	/*
	 * We are expecting a minimum of 3 endpoints - in, out (bulk), and
	 * int. We will ignore any others.
	 */
	for (i = 0; i < iface_desc->bNumEndpoints; i++) {
		/* is it an interrupt endpoint? */
		if ((iface->ep_desc[i].bmAttributes &
		    USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
			ss->ep_int = iface->ep_desc[i].bEndpointAddress &
				USB_ENDPOINT_NUMBER_MASK;
			ss->irqinterval = iface->ep_desc[i].bInterval;
			continue;
		}

		/* is it an BULK endpoint? */
		if (!((iface->ep_desc[i].bmAttributes &
		     USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK))
			continue;

		u8 ep_addr = iface->ep_desc[i].bEndpointAddress;
		if ((ep_addr & USB_DIR_IN) && !ep_in_found) {
			ss->ep_in = ep_addr &
				USB_ENDPOINT_NUMBER_MASK;
			ep_in_found = 1;
		}
		if (!(ep_addr & USB_DIR_IN) && !ep_out_found) {
			ss->ep_out = ep_addr &
				USB_ENDPOINT_NUMBER_MASK;
			dev_priv->maxpacketsize =
				dev->epmaxpacketout[AX_ENDPOINT_OUT];
			ep_out_found = 1;
		}
	}
	debug("Endpoints In %d Out %d Int %d\n",
	      ss->ep_in, ss->ep_out, ss->ep_int);

	/* Do some basic sanity checks, and bail if we find a problem */
	if (usb_set_interface(dev, iface_desc->bInterfaceNumber, 0) ||
	    !ss->ep_in || !ss->ep_out || !ss->ep_int) {
		debug("Problems with device\n");
		return 0;
	}
	dev->privptr = (void *)ss;
	return 1;
}

int ax88179_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
				struct eth_device *eth)
{
	struct asix_private *dev_priv = (struct asix_private *)ss->dev_priv;

	if (!eth) {
		debug("%s: missing parameter.\n", __func__);
		return 0;
	}
	sprintf(eth->name, "%s%d", ASIX_BASE_NAME, curr_eth_dev++);
	eth->init = asix_init;
	eth->send = asix_send;
	eth->recv = asix_recv;
	eth->halt = asix_halt;
	eth->write_hwaddr = asix_write_hwaddr;
	eth->priv = ss;

	if (asix_basic_reset(ss, dev_priv))
		return 0;

	/* Get the MAC address */
	if (asix_read_mac(ss, eth->enetaddr))
		return 0;
	debug("MAC %pM\n", eth->enetaddr);

	return 1;
}

#else /* !CONFIG_DM_ETH */

static int ax88179_eth_start(struct udevice *dev)
{
	struct asix_private *priv = dev_get_priv(dev);

	return asix_init_common(&priv->ueth, priv);
}

void ax88179_eth_stop(struct udevice *dev)
{
	struct asix_private *priv = dev_get_priv(dev);
	struct ueth_data *ueth = &priv->ueth;

	debug("** %s()\n", __func__);

	usb_ether_advance_rxbuf(ueth, -1);
	priv->pkt_cnt = 0;
	priv->pkt_data = NULL;
	priv->pkt_hdr = NULL;
}

int ax88179_eth_send(struct udevice *dev, void *packet, int length)
{
	struct asix_private *priv = dev_get_priv(dev);

	return asix_send_common(&priv->ueth, priv, packet, length);
}

int ax88179_eth_recv(struct udevice *dev, int flags, uchar **packetp)
{
	struct asix_private *priv = dev_get_priv(dev);
	struct ueth_data *ueth = &priv->ueth;
	int ret, len;
	u16 pkt_len;

	/* No packet left, get a new one */
	if (priv->pkt_cnt == 0) {
		uint8_t *ptr;
		u16 pkt_cnt;
		u16 hdr_off;
		u32 rx_hdr;

		len = usb_ether_get_rx_bytes(ueth, &ptr);
		debug("%s: first try, len=%d\n", __func__, len);
		if (!len) {
			if (!(flags & ETH_RECV_CHECK_DEVICE))
				return -EAGAIN;

			ret = usb_ether_receive(ueth, priv->rx_urb_size);
			if (ret < 0)
				return ret;

			len = usb_ether_get_rx_bytes(ueth, &ptr);
			debug("%s: second try, len=%d\n", __func__, len);
		}

		if (len < 4) {
			usb_ether_advance_rxbuf(ueth, -1);
			return -EMSGSIZE;
		}

		rx_hdr = *(u32 *)(ptr + len - 4);
		le32_to_cpus(&rx_hdr);

		pkt_cnt = (u16)rx_hdr;
		if (pkt_cnt == 0) {
			usb_ether_advance_rxbuf(ueth, -1);
			return 0;
		}

		hdr_off = (u16)(rx_hdr >> 16);
		if (hdr_off > len - 4) {
			usb_ether_advance_rxbuf(ueth, -1);
			return -EIO;
		}

		priv->pkt_cnt = pkt_cnt;
		priv->pkt_data = ptr;
		priv->pkt_hdr = (u32 *)(ptr + hdr_off);
		debug("%s: %d packets received, pkt header at %d\n",
		      __func__, (int)priv->pkt_cnt, (int)hdr_off);
	}

	le32_to_cpus(priv->pkt_hdr);
	pkt_len = (*priv->pkt_hdr >> 16) & 0x1fff;

	*packetp = priv->pkt_data + 2;

	priv->pkt_data += (pkt_len + 7) & 0xFFF8;
	priv->pkt_cnt--;
	priv->pkt_hdr++;

	debug("%s: return packet of %d bytes (%d packets left)\n",
	      __func__, (int)pkt_len, priv->pkt_cnt);
	return pkt_len;
}

static int ax88179_free_pkt(struct udevice *dev, uchar *packet, int packet_len)
{
	struct asix_private *priv = dev_get_priv(dev);
	struct ueth_data *ueth = &priv->ueth;

	if (priv->pkt_cnt == 0)
		usb_ether_advance_rxbuf(ueth, -1);

	return 0;
}

int ax88179_write_hwaddr(struct udevice *dev)
{
	struct eth_pdata *pdata = dev_get_platdata(dev);
	struct asix_private *priv = dev_get_priv(dev);
	struct ueth_data *ueth = &priv->ueth;

	return asix_write_mac(ueth, pdata->enetaddr);
}

static int ax88179_eth_probe(struct udevice *dev)
{
	struct eth_pdata *pdata = dev_get_platdata(dev);
	struct asix_private *priv = dev_get_priv(dev);
	struct usb_device *usb_dev;
	int ret;

	priv->flags = dev->driver_data;
	ret = usb_ether_register(dev, &priv->ueth, AX_RX_URB_SIZE);
	if (ret)
		return ret;

	usb_dev = priv->ueth.pusb_dev;
	priv->maxpacketsize = usb_dev->epmaxpacketout[AX_ENDPOINT_OUT];

	/* Get the MAC address */
	ret = asix_read_mac(&priv->ueth, pdata->enetaddr);
	if (ret)
		return ret;
	debug("MAC %pM\n", pdata->enetaddr);

	return 0;
}

static const struct eth_ops ax88179_eth_ops = {
	.start = ax88179_eth_start,
	.send = ax88179_eth_send,
	.recv = ax88179_eth_recv,
	.free_pkt = ax88179_free_pkt,
	.stop = ax88179_eth_stop,
	.write_hwaddr = ax88179_write_hwaddr,
};

U_BOOT_DRIVER(ax88179_eth) = {
	.name = "ax88179_eth",
	.id = UCLASS_ETH,
	.probe = ax88179_eth_probe,
	.ops = &ax88179_eth_ops,
	.priv_auto_alloc_size = sizeof(struct asix_private),
	.platdata_auto_alloc_size = sizeof(struct eth_pdata),
};

static const struct usb_device_id ax88179_eth_id_table[] = {
	{ USB_DEVICE(0x0b95, 0x1790), .driver_info = FLAG_TYPE_AX88179 },
	{ USB_DEVICE(0x0b95, 0x178a), .driver_info = FLAG_TYPE_AX88178a },
	{ USB_DEVICE(0x2001, 0x4a00), .driver_info = FLAG_TYPE_DLINK_DUB1312 },
	{ USB_DEVICE(0x0df6, 0x0072), .driver_info = FLAG_TYPE_SITECOM },
	{ USB_DEVICE(0x04e8, 0xa100), .driver_info = FLAG_TYPE_SAMSUNG },
	{ USB_DEVICE(0x17ef, 0x304b), .driver_info = FLAG_TYPE_LENOVO },
	{ USB_DEVICE(0x04b4, 0x3610), .driver_info = FLAG_TYPE_GX3 },
	{ }		/* Terminating entry */
};

U_BOOT_USB_DEVICE(ax88179_eth, ax88179_eth_id_table);
#endif /* !CONFIG_DM_ETH */