aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/gianfar.h
blob: 2cd94338b5d3a8459649f902cab0f72daa18e653 (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
/*
 * drivers/net/gianfar.h
 *
 * Gianfar Ethernet Driver
 * Driver for FEC on MPC8540 and TSEC on MPC8540/MPC8560
 * Based on 8260_io/fcc_enet.c
 *
 * Author: Andy Fleming
 * Maintainer: Kumar Gala
 *
 * Copyright (c) 2002-2004 Freescale Semiconductor, Inc.
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 *
 *  Still left to do:
 *      -Add support for module parameters
 *	-Add patch for ethtool phys id
 */
#ifndef __GIANFAR_H
#define __GIANFAR_H

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/mii.h>
#include <linux/phy.h>

#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <linux/module.h>
#include <linux/crc32.h>
#include <linux/workqueue.h>
#include <linux/ethtool.h>

/* The maximum number of packets to be handled in one call of gfar_poll */
#define GFAR_DEV_WEIGHT 64

/* Length for FCB */
#define GMAC_FCB_LEN 8

/* Default padding amount */
#define DEFAULT_PADDING 2

/* Number of bytes to align the rx bufs to */
#define RXBUF_ALIGNMENT 64

/* The number of bytes which composes a unit for the purpose of
 * allocating data buffers.  ie-for any given MTU, the data buffer
 * will be the next highest multiple of 512 bytes. */
#define INCREMENTAL_BUFFER_SIZE 512


#define MAC_ADDR_LEN 6

#define PHY_INIT_TIMEOUT 100000
#define GFAR_PHY_CHANGE_TIME 2

#define DEVICE_NAME "%s: Gianfar Ethernet Controller Version 1.2, "
#define DRV_NAME "gfar-enet"
extern const char gfar_driver_name[];
extern const char gfar_driver_version[];

/* These need to be powers of 2 for this driver */
#define DEFAULT_TX_RING_SIZE	256
#define DEFAULT_RX_RING_SIZE	256

#define GFAR_RX_MAX_RING_SIZE   256
#define GFAR_TX_MAX_RING_SIZE   256

#define GFAR_MAX_FIFO_THRESHOLD 511
#define GFAR_MAX_FIFO_STARVE	511
#define GFAR_MAX_FIFO_STARVE_OFF 511

#define DEFAULT_RX_BUFFER_SIZE  1536
#define TX_RING_MOD_MASK(size) (size-1)
#define RX_RING_MOD_MASK(size) (size-1)
#define JUMBO_BUFFER_SIZE 9728
#define JUMBO_FRAME_SIZE 9600

#define DEFAULT_FIFO_TX_THR 0x100
#define DEFAULT_FIFO_TX_STARVE 0x40
#define DEFAULT_FIFO_TX_STARVE_OFF 0x80
#define DEFAULT_BD_STASH 1
#define DEFAULT_STASH_LENGTH	96
#define DEFAULT_STASH_INDEX	0

/* The number of Exact Match registers */
#define GFAR_EM_NUM	15

/* Latency of interface clock in nanoseconds */
/* Interface clock latency , in this case, means the
 * time described by a value of 1 in the interrupt
 * coalescing registers' time fields.  Since those fields
 * refer to the time it takes for 64 clocks to pass, the
 * latencies are as such:
 * GBIT = 125MHz => 8ns/clock => 8*64 ns / tick
 * 100 = 25 MHz => 40ns/clock => 40*64 ns / tick
 * 10 = 2.5 MHz => 400ns/clock => 400*64 ns / tick
 */
#define GFAR_GBIT_TIME  512
#define GFAR_100_TIME   2560
#define GFAR_10_TIME    25600

#define DEFAULT_TX_COALESCE 1
#define DEFAULT_TXCOUNT	16
#define DEFAULT_TXTIME	21

#define DEFAULT_RXTIME	21

#define DEFAULT_RX_COALESCE 0
#define DEFAULT_RXCOUNT	0

#define GFAR_SUPPORTED (SUPPORTED_10baseT_Half \
		| SUPPORTED_10baseT_Full \
		| SUPPORTED_100baseT_Half \
		| SUPPORTED_100baseT_Full \
		| SUPPORTED_Autoneg \
		| SUPPORTED_MII)

/* TBI register addresses */
#define MII_TBICON		0x11

/* TBICON register bit fields */
#define TBICON_CLK_SELECT	0x0020

/* MAC register bits */
#define MACCFG1_SOFT_RESET	0x80000000
#define MACCFG1_RESET_RX_MC	0x00080000
#define MACCFG1_RESET_TX_MC	0x00040000
#define MACCFG1_RESET_RX_FUN	0x00020000
#define	MACCFG1_RESET_TX_FUN	0x00010000
#define MACCFG1_LOOPBACK	0x00000100
#define MACCFG1_RX_FLOW		0x00000020
#define MACCFG1_TX_FLOW		0x00000010
#define MACCFG1_SYNCD_RX_EN	0x00000008
#define MACCFG1_RX_EN		0x00000004
#define MACCFG1_SYNCD_TX_EN	0x00000002
#define MACCFG1_TX_EN		0x00000001

#define MACCFG2_INIT_SETTINGS	0x00007205
#define MACCFG2_FULL_DUPLEX	0x00000001
#define MACCFG2_IF              0x00000300
#define MACCFG2_MII             0x00000100
#define MACCFG2_GMII            0x00000200
#define MACCFG2_HUGEFRAME	0x00000020
#define MACCFG2_LENGTHCHECK	0x00000010
#define MACCFG2_MPEN		0x00000008

#define ECNTRL_INIT_SETTINGS	0x00001000
#define ECNTRL_TBI_MODE         0x00000020
#define ECNTRL_REDUCED_MODE	0x00000010
#define ECNTRL_R100		0x00000008
#define ECNTRL_REDUCED_MII_MODE	0x00000004
#define ECNTRL_SGMII_MODE	0x00000002

#define MRBLR_INIT_SETTINGS	DEFAULT_RX_BUFFER_SIZE

#define MINFLR_INIT_SETTINGS	0x00000040

/* Init to do tx snooping for buffers and descriptors */
#define DMACTRL_INIT_SETTINGS   0x000000c3
#define DMACTRL_GRS             0x00000010
#define DMACTRL_GTS             0x00000008

#define TSTAT_CLEAR_THALT       0x80000000

/* Interrupt coalescing macros */
#define IC_ICEN			0x80000000
#define IC_ICFT_MASK		0x1fe00000
#define IC_ICFT_SHIFT		21
#define mk_ic_icft(x)		\
	(((unsigned int)x << IC_ICFT_SHIFT)&IC_ICFT_MASK)
#define IC_ICTT_MASK		0x0000ffff
#define mk_ic_ictt(x)		(x&IC_ICTT_MASK)

#define mk_ic_value(count, time) (IC_ICEN | \
				mk_ic_icft(count) | \
				mk_ic_ictt(time))
#define get_icft_value(ic)	(((unsigned long)ic & IC_ICFT_MASK) >> \
				 IC_ICFT_SHIFT)
#define get_ictt_value(ic)	((unsigned long)ic & IC_ICTT_MASK)

#define DEFAULT_TXIC mk_ic_value(DEFAULT_TXCOUNT, DEFAULT_TXTIME)
#define DEFAULT_RXIC mk_ic_value(DEFAULT_RXCOUNT, DEFAULT_RXTIME)

#define skip_bd(bdp, stride, base, ring_size) ({ \
	typeof(bdp) new_bd = (bdp) + (stride); \
	(new_bd >= (base) + (ring_size)) ? (new_bd - (ring_size)) : new_bd; })

#define next_bd(bdp, base, ring_size) skip_bd(bdp, 1, base, ring_size)

#define RCTRL_PAL_MASK		0x001f0000
#define RCTRL_VLEX		0x00002000
#define RCTRL_FILREN		0x00001000
#define RCTRL_GHTX		0x00000400
#define RCTRL_IPCSEN		0x00000200
#define RCTRL_TUCSEN		0x00000100
#define RCTRL_PRSDEP_MASK	0x000000c0
#define RCTRL_PRSDEP_INIT	0x000000c0
#define RCTRL_PROM		0x00000008
#define RCTRL_EMEN		0x00000002
#define RCTRL_REQ_PARSER	(RCTRL_VLEX | RCTRL_IPCSEN | \
				 RCTRL_TUCSEN)
#define RCTRL_CHECKSUMMING	(RCTRL_IPCSEN | RCTRL_TUCSEN | \
				RCTRL_PRSDEP_INIT)
#define RCTRL_EXTHASH		(RCTRL_GHTX)
#define RCTRL_VLAN		(RCTRL_PRSDEP_INIT)
#define RCTRL_PADDING(x)	((x << 16) & RCTRL_PAL_MASK)


#define RSTAT_CLEAR_RHALT       0x00800000

#define TCTRL_IPCSEN		0x00004000
#define TCTRL_TUCSEN		0x00002000
#define TCTRL_VLINS		0x00001000
#define TCTRL_INIT_CSUM		(TCTRL_TUCSEN | TCTRL_IPCSEN)

#define IEVENT_INIT_CLEAR	0xffffffff
#define IEVENT_BABR		0x80000000
#define IEVENT_RXC		0x40000000
#define IEVENT_BSY		0x20000000
#define IEVENT_EBERR		0x10000000
#define IEVENT_MSRO		0x04000000
#define IEVENT_GTSC		0x02000000
#define IEVENT_BABT		0x01000000
#define IEVENT_TXC		0x00800000
#define IEVENT_TXE		0x00400000
#define IEVENT_TXB		0x00200000
#define IEVENT_TXF		0x00100000
#define IEVENT_LC		0x00040000
#define IEVENT_CRL		0x00020000
#define IEVENT_XFUN		0x00010000
#define IEVENT_RXB0		0x00008000
#define IEVENT_MAG		0x00000800
#define IEVENT_GRSC		0x00000100
#define IEVENT_RXF0		0x00000080
#define IEVENT_FIR		0x00000008
#define IEVENT_FIQ		0x00000004
#define IEVENT_DPE		0x00000002
#define IEVENT_PERR		0x00000001
#define IEVENT_RX_MASK          (IEVENT_RXB0 | IEVENT_RXF0 | IEVENT_BSY)
#define IEVENT_TX_MASK          (IEVENT_TXB | IEVENT_TXF)
#define IEVENT_RTX_MASK         (IEVENT_RX_MASK | IEVENT_TX_MASK)
#define IEVENT_ERR_MASK         \
(IEVENT_RXC | IEVENT_BSY | IEVENT_EBERR | IEVENT_MSRO | \
 IEVENT_BABT | IEVENT_TXC | IEVENT_TXE | IEVENT_LC \
 | IEVENT_CRL | IEVENT_XFUN | IEVENT_DPE | IEVENT_PERR \
 | IEVENT_MAG | IEVENT_BABR)

#define IMASK_INIT_CLEAR	0x00000000
#define IMASK_BABR              0x80000000
#define IMASK_RXC               0x40000000
#define IMASK_BSY               0x20000000
#define IMASK_EBERR             0x10000000
#define IMASK_MSRO		0x04000000
#define IMASK_GRSC              0x02000000
#define IMASK_BABT		0x01000000
#define IMASK_TXC               0x00800000
#define IMASK_TXEEN		0x00400000
#define IMASK_TXBEN		0x00200000
#define IMASK_TXFEN             0x00100000
#define IMASK_LC		0x00040000
#define IMASK_CRL		0x00020000
#define IMASK_XFUN		0x00010000
#define IMASK_RXB0              0x00008000
#define IMASK_MAG		0x00000800
#define IMASK_GTSC              0x00000100
#define IMASK_RXFEN0		0x00000080
#define IMASK_FIR		0x00000008
#define IMASK_FIQ		0x00000004
#define IMASK_DPE		0x00000002
#define IMASK_PERR		0x00000001
#define IMASK_DEFAULT  (IMASK_TXEEN | IMASK_TXFEN | IMASK_TXBEN | \
		IMASK_RXFEN0 | IMASK_BSY | IMASK_EBERR | IMASK_BABR | \
		IMASK_XFUN | IMASK_RXC | IMASK_BABT | IMASK_DPE \
		| IMASK_PERR)
#define IMASK_RTX_DISABLED ((~(IMASK_RXFEN0 | IMASK_TXFEN | IMASK_BSY)) \
			   & IMASK_DEFAULT)

/* Fifo management */
#define FIFO_TX_THR_MASK	0x01ff
#define FIFO_TX_STARVE_MASK	0x01ff
#define FIFO_TX_STARVE_OFF_MASK	0x01ff

/* Attribute fields */

/* This enables rx snooping for buffers and descriptors */
#define ATTR_BDSTASH		0x00000800

#define ATTR_BUFSTASH		0x00004000

#define ATTR_SNOOPING		0x000000c0
#define ATTR_INIT_SETTINGS      ATTR_SNOOPING

#define ATTRELI_INIT_SETTINGS   0x0
#define ATTRELI_EL_MASK		0x3fff0000
#define ATTRELI_EL(x) (x << 16)
#define ATTRELI_EI_MASK		0x00003fff
#define ATTRELI_EI(x) (x)

#define BD_LFLAG(flags) ((flags) << 16)
#define BD_LENGTH_MASK		0x0000ffff

/* TxBD status field bits */
#define TXBD_READY		0x8000
#define TXBD_PADCRC		0x4000
#define TXBD_WRAP		0x2000
#define TXBD_INTERRUPT		0x1000
#define TXBD_LAST		0x0800
#define TXBD_CRC		0x0400
#define TXBD_DEF		0x0200
#define TXBD_HUGEFRAME		0x0080
#define TXBD_LATECOLLISION	0x0080
#define TXBD_RETRYLIMIT		0x0040
#define	TXBD_RETRYCOUNTMASK	0x003c
#define TXBD_UNDERRUN		0x0002
#define TXBD_TOE		0x0002

/* Tx FCB param bits */
#define TXFCB_VLN		0x80
#define TXFCB_IP		0x40
#define TXFCB_IP6		0x20
#define TXFCB_TUP		0x10
#define TXFCB_UDP		0x08
#define TXFCB_CIP		0x04
#define TXFCB_CTU		0x02
#define TXFCB_NPH		0x01
#define TXFCB_DEFAULT 		(TXFCB_IP|TXFCB_TUP|TXFCB_CTU|TXFCB_NPH)

/* RxBD status field bits */
#define RXBD_EMPTY		0x8000
#define RXBD_RO1		0x4000
#define RXBD_WRAP		0x2000
#define RXBD_INTERRUPT		0x1000
#define RXBD_LAST		0x0800
#define RXBD_FIRST		0x0400
#define RXBD_MISS		0x0100
#define RXBD_BROADCAST		0x0080
#define RXBD_MULTICAST		0x0040
#define RXBD_LARGE		0x0020
#define RXBD_NONOCTET		0x0010
#define RXBD_SHORT		0x0008
#define RXBD_CRCERR		0x0004
#define RXBD_OVERRUN		0x0002
#define RXBD_TRUNCATED		0x0001
#define RXBD_STATS		0x01ff
#define RXBD_ERR		(RXBD_LARGE | RXBD_SHORT | RXBD_NONOCTET 	\
				| RXBD_CRCERR | RXBD_OVERRUN			\
				| RXBD_TRUNCATED)

/* Rx FCB status field bits */
#define RXFCB_VLN		0x8000
#define RXFCB_IP		0x4000
#define RXFCB_IP6		0x2000
#define RXFCB_TUP		0x1000
#define RXFCB_CIP		0x0800
#define RXFCB_CTU		0x0400
#define RXFCB_EIP		0x0200
#define RXFCB_ETU		0x0100
#define RXFCB_CSUM_MASK		0x0f00
#define RXFCB_PERR_MASK		0x000c
#define RXFCB_PERR_BADL3	0x0008

#define GFAR_INT_NAME_MAX	IFNAMSIZ + 4

struct txbd8
{
	union {
		struct {
			u16	status;	/* Status Fields */
			u16	length;	/* Buffer length */
		};
		u32 lstatus;
	};
	u32	bufPtr;	/* Buffer Pointer */
};

struct txfcb {
	u8	flags;
	u8	reserved;
	u8	l4os;	/* Level 4 Header Offset */
	u8	l3os; 	/* Level 3 Header Offset */
	u16	phcs;	/* Pseudo-header Checksum */
	u16	vlctl;	/* VLAN control word */
};

struct rxbd8
{
	union {
		struct {
			u16	status;	/* Status Fields */
			u16	length;	/* Buffer Length */
		};
		u32 lstatus;
	};
	u32	bufPtr;	/* Buffer Pointer */
};

struct rxfcb {
	u16	flags;
	u8	rq;	/* Receive Queue index */
	u8	pro;	/* Layer 4 Protocol */
	u16	reserved;
	u16	vlctl;	/* VLAN control word */
};

struct rmon_mib
{
	u32	tr64;	/* 0x.680 - Transmit and Receive 64-byte Frame Counter */
	u32	tr127;	/* 0x.684 - Transmit and Receive 65-127 byte Frame Counter */
	u32	tr255;	/* 0x.688 - Transmit and Receive 128-255 byte Frame Counter */
	u32	tr511;	/* 0x.68c - Transmit and Receive 256-511 byte Frame Counter */
	u32	tr1k;	/* 0x.690 - Transmit and Receive 512-1023 byte Frame Counter */
	u32	trmax;	/* 0x.694 - Transmit and Receive 1024-1518 byte Frame Counter */
	u32	trmgv;	/* 0x.698 - Transmit and Receive 1519-1522 byte Good VLAN Frame */
	u32	rbyt;	/* 0x.69c - Receive Byte Counter */
	u32	rpkt;	/* 0x.6a0 - Receive Packet Counter */
	u32	rfcs;	/* 0x.6a4 - Receive FCS Error Counter */
	u32	rmca;	/* 0x.6a8 - Receive Multicast Packet Counter */
	u32	rbca;	/* 0x.6ac - Receive Broadcast Packet Counter */
	u32	rxcf;	/* 0x.6b0 - Receive Control Frame Packet Counter */
	u32	rxpf;	/* 0x.6b4 - Receive Pause Frame Packet Counter */
	u32	rxuo;	/* 0x.6b8 - Receive Unknown OP Code Counter */
	u32	raln;	/* 0x.6bc - Receive Alignment Error Counter */
	u32	rflr;	/* 0x.6c0 - Receive Frame Length Error Counter */
	u32	rcde;	/* 0x.6c4 - Receive Code Error Counter */
	u32	rcse;	/* 0x.6c8 - Receive Carrier Sense Error Counter */
	u32	rund;	/* 0x.6cc - Receive Undersize Packet Counter */
	u32	rovr;	/* 0x.6d0 - Receive Oversize Packet Counter */
	u32	rfrg;	/* 0x.6d4 - Receive Fragments Counter */
	u32	rjbr;	/* 0x.6d8 - Receive Jabber Counter */
	u32	rdrp;	/* 0x.6dc - Receive Drop Counter */
	u32	tbyt;	/* 0x.6e0 - Transmit Byte Counter Counter */
	u32	tpkt;	/* 0x.6e4 - Transmit Packet Counter */
	u32	tmca;	/* 0x.6e8 - Transmit Multicast Packet Counter */
	u32	tbca;	/* 0x.6ec - Transmit Broadcast Packet Counter */
	u32	txpf;	/* 0x.6f0 - Transmit Pause Control Frame Counter */
	u32	tdfr;	/* 0x.6f4 - Transmit Deferral Packet Counter */
	u32	tedf;	/* 0x.6f8 - Transmit Excessive Deferral Packet Counter */
	u32	tscl;	/* 0x.6fc - Transmit Single Collision Packet Counter */
	u32	tmcl;	/* 0x.700 - Transmit Multiple Collision Packet Counter */
	u32	tlcl;	/* 0x.704 - Transmit Late Collision Packet Counter */
	u32	txcl;	/* 0x.708 - Transmit Excessive Collision Packet Counter */
	u32	tncl;	/* 0x.70c - Transmit Total Collision Counter */
	u8	res1[4];
	u32	tdrp;	/* 0x.714 - Transmit Drop Frame Counter */
	u32	tjbr;	/* 0x.718 - Transmit Jabber Frame Counter */
	u32	tfcs;	/* 0x.71c - Transmit FCS Error Counter */
	u32	txcf;	/* 0x.720 - Transmit Control Frame Counter */
	u32	tovr;	/* 0x.724 - Transmit Oversize Frame Counter */
	u32	tund;	/* 0x.728 - Transmit Undersize Frame Counter */
	u32	tfrg;	/* 0x.72c - Transmit Fragments Frame Counter */
	u32	car1;	/* 0x.730 - Carry Register One */
	u32	car2;	/* 0x.734 - Carry Register Two */
	u32	cam1;	/* 0x.738 - Carry Mask Register One */
	u32	cam2;	/* 0x.73c - Carry Mask Register Two */
};

struct gfar_extra_stats {
	u64 kernel_dropped;
	u64 rx_large;
	u64 rx_short;
	u64 rx_nonoctet;
	u64 rx_crcerr;
	u64 rx_overrun;
	u64 rx_bsy;
	u64 rx_babr;
	u64 rx_trunc;
	u64 eberr;
	u64 tx_babt;
	u64 tx_underrun;
	u64 rx_skbmissing;
	u64 tx_timeout;
};

#define GFAR_RMON_LEN ((sizeof(struct rmon_mib) - 16)/sizeof(u32))
#define GFAR_EXTRA_STATS_LEN (sizeof(struct gfar_extra_stats)/sizeof(u64))

/* Number of stats in the stats structure (ignore car and cam regs)*/
#define GFAR_STATS_LEN (GFAR_RMON_LEN + GFAR_EXTRA_STATS_LEN)

#define GFAR_INFOSTR_LEN 32

struct gfar_stats {
	u64 extra[GFAR_EXTRA_STATS_LEN];
	u64 rmon[GFAR_RMON_LEN];
};


struct gfar {
	u32	tsec_id;	/* 0x.000 - Controller ID register */
	u8	res1[12];
	u32	ievent;		/* 0x.010 - Interrupt Event Register */
	u32	imask;		/* 0x.014 - Interrupt Mask Register */
	u32	edis;		/* 0x.018 - Error Disabled Register */
	u8	res2[4];
	u32	ecntrl;		/* 0x.020 - Ethernet Control Register */
	u32	minflr;		/* 0x.024 - Minimum Frame Length Register */
	u32	ptv;		/* 0x.028 - Pause Time Value Register */
	u32	dmactrl;	/* 0x.02c - DMA Control Register */
	u32	tbipa;		/* 0x.030 - TBI PHY Address Register */
	u8	res3[88];
	u32	fifo_tx_thr;	/* 0x.08c - FIFO transmit threshold register */
	u8	res4[8];
	u32	fifo_tx_starve;	/* 0x.098 - FIFO transmit starve register */
	u32	fifo_tx_starve_shutoff;	/* 0x.09c - FIFO transmit starve shutoff register */
	u8	res5[4];
	u32	fifo_rx_pause;	/* 0x.0a4 - FIFO receive pause threshold register */
	u32	fifo_rx_alarm;	/* 0x.0a8 - FIFO receive alarm threshold register */
	u8	res6[84];
	u32	tctrl;		/* 0x.100 - Transmit Control Register */
	u32	tstat;		/* 0x.104 - Transmit Status Register */
	u32	dfvlan;		/* 0x.108 - Default VLAN Control word */
	u32	tbdlen;		/* 0x.10c - Transmit Buffer Descriptor Data Length Register */
	u32	txic;		/* 0x.110 - Transmit Interrupt Coalescing Configuration Register */
	u32	tqueue;		/* 0x.114 - Transmit queue control register */
	u8	res7[40];
	u32	tr03wt;		/* 0x.140 - TxBD Rings 0-3 round-robin weightings */
	u32	tr47wt;		/* 0x.144 - TxBD Rings 4-7 round-robin weightings */
	u8	res8[52];
	u32	tbdbph;		/* 0x.17c - Tx data buffer pointer high */
	u8	res9a[4];
	u32	tbptr0;		/* 0x.184 - TxBD Pointer for ring 0 */
	u8	res9b[4];
	u32	tbptr1;		/* 0x.18c - TxBD Pointer for ring 1 */
	u8	res9c[4];
	u32	tbptr2;		/* 0x.194 - TxBD Pointer for ring 2 */
	u8	res9d[4];
	u32	tbptr3;		/* 0x.19c - TxBD Pointer for ring 3 */
	u8	res9e[4];
	u32	tbptr4;		/* 0x.1a4 - TxBD Pointer for ring 4 */
	u8	res9f[4];
	u32	tbptr5;		/* 0x.1ac - TxBD Pointer for ring 5 */
	u8	res9g[4];
	u32	tbptr6;		/* 0x.1b4 - TxBD Pointer for ring 6 */
	u8	res9h[4];
	u32	tbptr7;		/* 0x.1bc - TxBD Pointer for ring 7 */
	u8	res9[64];
	u32	tbaseh;		/* 0x.200 - TxBD base address high */
	u32	tbase0;		/* 0x.204 - TxBD Base Address of ring 0 */
	u8	res10a[4];
	u32	tbase1;		/* 0x.20c - TxBD Base Address of ring 1 */
	u8	res10b[4];
	u32	tbase2;		/* 0x.214 - TxBD Base Address of ring 2 */
	u8	res10c[4];
	u32	tbase3;		/* 0x.21c - TxBD Base Address of ring 3 */
	u8	res10d[4];
	u32	tbase4;		/* 0x.224 - TxBD Base Address of ring 4 */
	u8	res10e[4];
	u32	tbase5;		/* 0x.22c - TxBD Base Address of ring 5 */
	u8	res10f[4];
	u32	tbase6;		/* 0x.234 - TxBD Base Address of ring 6 */
	u8	res10g[4];
	u32	tbase7;		/* 0x.23c - TxBD Base Address of ring 7 */
	u8	res10[192];
	u32	rctrl;		/* 0x.300 - Receive Control Register */
	u32	rstat;		/* 0x.304 - Receive Status Register */
	u8	res12[8];
	u32	rxic;		/* 0x.310 - Receive Interrupt Coalescing Configuration Register */
	u32	rqueue;		/* 0x.314 - Receive queue control register */
	u8	res13[24];
	u32	rbifx;		/* 0x.330 - Receive bit field extract control register */
	u32	rqfar;		/* 0x.334 - Receive queue filing table address register */
	u32	rqfcr;		/* 0x.338 - Receive queue filing table control register */
	u32	rqfpr;		/* 0x.33c - Receive queue filing table property register */
	u32	mrblr;		/* 0x.340 - Maximum Receive Buffer Length Register */
	u8	res14[56];
	u32	rbdbph;		/* 0x.37c - Rx data buffer pointer high */
	u8	res15a[4];
	u32	rbptr0;		/* 0x.384 - RxBD pointer for ring 0 */
	u8	res15b[4];
	u32	rbptr1;		/* 0x.38c - RxBD pointer for ring 1 */
	u8	res15c[4];
	u32	rbptr2;		/* 0x.394 - RxBD pointer for ring 2 */
	u8	res15d[4];
	u32	rbptr3;		/* 0x.39c - RxBD pointer for ring 3 */
	u8	res15e[4];
	u32	rbptr4;		/* 0x.3a4 - RxBD pointer for ring 4 */
	u8	res15f[4];
	u32	rbptr5;		/* 0x.3ac - RxBD pointer for ring 5 */
	u8	res15g[4];
	u32	rbptr6;		/* 0x.3b4 - RxBD pointer for ring 6 */
	u8	res15h[4];
	u32	rbptr7;		/* 0x.3bc - RxBD pointer for ring 7 */
	u8	res16[64];
	u32	rbaseh;		/* 0x.400 - RxBD base address high */
	u32	rbase0;		/* 0x.404 - RxBD base address of ring 0 */
	u8	res17a[4];
	u32	rbase1;		/* 0x.40c - RxBD base address of ring 1 */
	u8	res17b[4];
	u32	rbase2;		/* 0x.414 - RxBD base address of ring 2 */
	u8	res17c[4];
	u32	rbase3;		/* 0x.41c - RxBD base address of ring 3 */
	u8	res17d[4];
	u32	rbase4;		/* 0x.424 - RxBD base address of ring 4 */
	u8	res17e[4];
	u32	rbase5;		/* 0x.42c - RxBD base address of ring 5 */
	u8	res17f[4];
	u32	rbase6;		/* 0x.434 - RxBD base address of ring 6 */
	u8	res17g[4];
	u32	rbase7;		/* 0x.43c - RxBD base address of ring 7 */
	u8	res17[192];
	u32	maccfg1;	/* 0x.500 - MAC Configuration 1 Register */
	u32	maccfg2;	/* 0x.504 - MAC Configuration 2 Register */
	u32	ipgifg;		/* 0x.508 - Inter Packet Gap/Inter Frame Gap Register */
	u32	hafdup;		/* 0x.50c - Half Duplex Register */
	u32	maxfrm;		/* 0x.510 - Maximum Frame Length Register */
	u8	res18[12];
	u8	gfar_mii_regs[24];	/* See gianfar_phy.h */
	u8	res19[4];
	u32	ifstat;		/* 0x.53c - Interface Status Register */
	u32	macstnaddr1;	/* 0x.540 - Station Address Part 1 Register */
	u32	macstnaddr2;	/* 0x.544 - Station Address Part 2 Register */
	u32	mac01addr1;	/* 0x.548 - MAC exact match address 1, part 1 */
	u32	mac01addr2;	/* 0x.54c - MAC exact match address 1, part 2 */
	u32	mac02addr1;	/* 0x.550 - MAC exact match address 2, part 1 */
	u32	mac02addr2;	/* 0x.554 - MAC exact match address 2, part 2 */
	u32	mac03addr1;	/* 0x.558 - MAC exact match address 3, part 1 */
	u32	mac03addr2;	/* 0x.55c - MAC exact match address 3, part 2 */
	u32	mac04addr1;	/* 0x.560 - MAC exact match address 4, part 1 */
	u32	mac04addr2;	/* 0x.564 - MAC exact match address 4, part 2 */
	u32	mac05addr1;	/* 0x.568 - MAC exact match address 5, part 1 */
	u32	mac05addr2;	/* 0x.56c - MAC exact match address 5, part 2 */
	u32	mac06addr1;	/* 0x.570 - MAC exact match address 6, part 1 */
	u32	mac06addr2;	/* 0x.574 - MAC exact match address 6, part 2 */
	u32	mac07addr1;	/* 0x.578 - MAC exact match address 7, part 1 */
	u32	mac07addr2;	/* 0x.57c - MAC exact match address 7, part 2 */
	u32	mac08addr1;	/* 0x.580 - MAC exact match address 8, part 1 */
	u32	mac08addr2;	/* 0x.584 - MAC exact match address 8, part 2 */
	u32	mac09addr1;	/* 0x.588 - MAC exact match address 9, part 1 */
	u32	mac09addr2;	/* 0x.58c - MAC exact match address 9, part 2 */
	u32	mac10addr1;	/* 0x.590 - MAC exact match address 10, part 1*/
	u32	mac10addr2;	/* 0x.594 - MAC exact match address 10, part 2*/
	u32	mac11addr1;	/* 0x.598 - MAC exact match address 11, part 1*/
	u32	mac11addr2;	/* 0x.59c - MAC exact match address 11, part 2*/
	u32	mac12addr1;	/* 0x.5a0 - MAC exact match address 12, part 1*/
	u32	mac12addr2;	/* 0x.5a4 - MAC exact match address 12, part 2*/
	u32	mac13addr1;	/* 0x.5a8 - MAC exact match address 13, part 1*/
	u32	mac13addr2;	/* 0x.5ac - MAC exact match address 13, part 2*/
	u32	mac14addr1;	/* 0x.5b0 - MAC exact match address 14, part 1*/
	u32	mac14addr2;	/* 0x.5b4 - MAC exact match address 14, part 2*/
	u32	mac15addr1;	/* 0x.5b8 - MAC exact match address 15, part 1*/
	u32	mac15addr2;	/* 0x.5bc - MAC exact match address 15, part 2*/
	u8	res20[192];
	struct rmon_mib	rmon;	/* 0x.680-0x.73c */
	u32	rrej;		/* 0x.740 - Receive filer rejected packet counter */
	u8	res21[188];
	u32	igaddr0;	/* 0x.800 - Indivdual/Group address register 0*/
	u32	igaddr1;	/* 0x.804 - Indivdual/Group address register 1*/
	u32	igaddr2;	/* 0x.808 - Indivdual/Group address register 2*/
	u32	igaddr3;	/* 0x.80c - Indivdual/Group address register 3*/
	u32	igaddr4;	/* 0x.810 - Indivdual/Group address register 4*/
	u32	igaddr5;	/* 0x.814 - Indivdual/Group address register 5*/
	u32	igaddr6;	/* 0x.818 - Indivdual/Group address register 6*/
	u32	igaddr7;	/* 0x.81c - Indivdual/Group address register 7*/
	u8	res22[96];
	u32	gaddr0;		/* 0x.880 - Group address register 0 */
	u32	gaddr1;		/* 0x.884 - Group address register 1 */
	u32	gaddr2;		/* 0x.888 - Group address register 2 */
	u32	gaddr3;		/* 0x.88c - Group address register 3 */
	u32	gaddr4;		/* 0x.890 - Group address register 4 */
	u32	gaddr5;		/* 0x.894 - Group address register 5 */
	u32	gaddr6;		/* 0x.898 - Group address register 6 */
	u32	gaddr7;		/* 0x.89c - Group address register 7 */
	u8	res23a[352];
	u32	fifocfg;	/* 0x.a00 - FIFO interface config register */
	u8	res23b[252];
	u8	res23c[248];
	u32	attr;		/* 0x.bf8 - Attributes Register */
	u32	attreli;	/* 0x.bfc - Attributes Extract Length and Extract Index Register */
	u8	res24[1024];

};

/* Flags related to gianfar device features */
#define FSL_GIANFAR_DEV_HAS_GIGABIT		0x00000001
#define FSL_GIANFAR_DEV_HAS_COALESCE		0x00000002
#define FSL_GIANFAR_DEV_HAS_RMON		0x00000004
#define FSL_GIANFAR_DEV_HAS_MULTI_INTR		0x00000008
#define FSL_GIANFAR_DEV_HAS_CSUM		0x00000010
#define FSL_GIANFAR_DEV_HAS_VLAN		0x00000020
#define FSL_GIANFAR_DEV_HAS_EXTENDED_HASH	0x00000040
#define FSL_GIANFAR_DEV_HAS_PADDING		0x00000080
#define FSL_GIANFAR_DEV_HAS_MAGIC_PACKET	0x00000100
#define FSL_GIANFAR_DEV_HAS_BD_STASHING		0x00000200
#define FSL_GIANFAR_DEV_HAS_BUF_STASHING	0x00000400

/* Struct stolen almost completely (and shamelessly) from the FCC enet source
 * (Ok, that's not so true anymore, but there is a family resemblence)
 * The GFAR buffer descriptors track the ring buffers.  The rx_bd_base
 * and tx_bd_base always point to the currently available buffer.
 * The dirty_tx tracks the current buffer that is being sent by the
 * controller.  The cur_tx and dirty_tx are equal under both completely
 * empty and completely full conditions.  The empty/ready indicator in
 * the buffer descriptor determines the actual condition.
 */
struct gfar_private {
	/* Fields controlled by TX lock */
	spinlock_t txlock;

	/* Pointer to the array of skbuffs */
	struct sk_buff ** tx_skbuff;

	/* next free skb in the array */
	u16 skb_curtx;

	/* First skb in line to be transmitted */
	u16 skb_dirtytx;

	/* Configuration info for the coalescing features */
	unsigned char txcoalescing;
	unsigned long txic;

	/* Buffer descriptor pointers */
	struct txbd8 *tx_bd_base;	/* First tx buffer descriptor */
	struct txbd8 *cur_tx;	        /* Next free ring entry */
	struct txbd8 *dirty_tx;		/* First buffer in line
					   to be transmitted */
	unsigned int tx_ring_size;
	unsigned int num_txbdfree;	/* number of TxBDs free */

	/* RX Locked fields */
	spinlock_t rxlock;

	struct device_node *node;
	struct net_device *ndev;
	struct of_device *ofdev;
	struct napi_struct napi;

	/* skb array and index */
	struct sk_buff ** rx_skbuff;
	u16 skb_currx;

	/* RX Coalescing values */
	unsigned char rxcoalescing;
	unsigned long rxic;

	struct rxbd8 *rx_bd_base;	/* First Rx buffers */
	struct rxbd8 *cur_rx;           /* Next free rx ring entry */

	/* RX parameters */
	unsigned int rx_ring_size;
	unsigned int rx_buffer_size;
	unsigned int rx_stash_size;
	unsigned int rx_stash_index;

	struct sk_buff_head rx_recycle;

	struct vlan_group *vlgrp;

	/* Unprotected fields */
	/* Pointer to the GFAR memory mapped Registers */
	struct gfar __iomem *regs;

	/* Hash registers and their width */
	u32 __iomem *hash_regs[16];
	int hash_width;

	/* global parameters */
	unsigned int fifo_threshold;
	unsigned int fifo_starve;
	unsigned int fifo_starve_off;

	/* Bitfield update lock */
	spinlock_t bflock;

	phy_interface_t interface;
	struct device_node *phy_node;
	struct device_node *tbi_node;
	u32 device_flags;
	unsigned char rx_csum_enable:1,
		extended_hash:1,
		bd_stash_en:1,
		wol_en:1; /* Wake-on-LAN enabled */
	unsigned short padding;

	unsigned int interruptTransmit;
	unsigned int interruptReceive;
	unsigned int interruptError;

	/* PHY stuff */
	struct phy_device *phydev;
	struct mii_bus *mii_bus;
	int oldspeed;
	int oldduplex;
	int oldlink;

	uint32_t msg_enable;

	struct work_struct reset_task;

	char int_name_tx[GFAR_INT_NAME_MAX];
	char int_name_rx[GFAR_INT_NAME_MAX];
	char int_name_er[GFAR_INT_NAME_MAX];

	/* Network Statistics */
	struct gfar_extra_stats extra_stats;
};

static inline u32 gfar_read(volatile unsigned __iomem *addr)
{
	u32 val;
	val = in_be32(addr);
	return val;
}

static inline void gfar_write(volatile unsigned __iomem *addr, u32 val)
{
	out_be32(addr, val);
}

extern irqreturn_t gfar_receive(int irq, void *dev_id);
extern int startup_gfar(struct net_device *dev);
extern void stop_gfar(struct net_device *dev);
extern void gfar_halt(struct net_device *dev);
extern void gfar_phy_test(struct mii_bus *bus, struct phy_device *phydev,
		int enable, u32 regnum, u32 read);
void gfar_init_sysfs(struct net_device *dev);

extern const struct ethtool_ops gfar_ethtool_ops;

#endif /* __GIANFAR_H */