aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/gianfar_ethtool.c
blob: 3bc8e276ba4d713370f86af90d7b4b1b22209dfb (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
/*
 *  drivers/net/gianfar_ethtool.c
 *
 *  Gianfar Ethernet Driver
 *  Ethtool support for Gianfar Enet
 *  Based on e1000 ethtool support
 *
 *  Author: Andy Fleming
 *  Maintainer: Kumar Gala
 *  Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
 *
 *  Copyright 2003-2006, 2008-2009 Freescale Semiconductor, Inc.
 *
 *  This software may be used and distributed according to
 *  the terms of the GNU Public License, Version 2, incorporated herein
 *  by reference.
 */

#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.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 <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <linux/module.h>
#include <linux/crc32.h>
#include <asm/types.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/phy.h>

#include "gianfar.h"

extern void gfar_start(struct net_device *dev);
extern int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit);

#define GFAR_MAX_COAL_USECS 0xffff
#define GFAR_MAX_COAL_FRAMES 0xff
static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
		     u64 * buf);
static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
static void gfar_gdrvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo);

static char stat_gstrings[][ETH_GSTRING_LEN] = {
	"rx-dropped-by-kernel",
	"rx-large-frame-errors",
	"rx-short-frame-errors",
	"rx-non-octet-errors",
	"rx-crc-errors",
	"rx-overrun-errors",
	"rx-busy-errors",
	"rx-babbling-errors",
	"rx-truncated-frames",
	"ethernet-bus-error",
	"tx-babbling-errors",
	"tx-underrun-errors",
	"rx-skb-missing-errors",
	"tx-timeout-errors",
	"tx-rx-64-frames",
	"tx-rx-65-127-frames",
	"tx-rx-128-255-frames",
	"tx-rx-256-511-frames",
	"tx-rx-512-1023-frames",
	"tx-rx-1024-1518-frames",
	"tx-rx-1519-1522-good-vlan",
	"rx-bytes",
	"rx-packets",
	"rx-fcs-errors",
	"receive-multicast-packet",
	"receive-broadcast-packet",
	"rx-control-frame-packets",
	"rx-pause-frame-packets",
	"rx-unknown-op-code",
	"rx-alignment-error",
	"rx-frame-length-error",
	"rx-code-error",
	"rx-carrier-sense-error",
	"rx-undersize-packets",
	"rx-oversize-packets",
	"rx-fragmented-frames",
	"rx-jabber-frames",
	"rx-dropped-frames",
	"tx-byte-counter",
	"tx-packets",
	"tx-multicast-packets",
	"tx-broadcast-packets",
	"tx-pause-control-frames",
	"tx-deferral-packets",
	"tx-excessive-deferral-packets",
	"tx-single-collision-packets",
	"tx-multiple-collision-packets",
	"tx-late-collision-packets",
	"tx-excessive-collision-packets",
	"tx-total-collision",
	"reserved",
	"tx-dropped-frames",
	"tx-jabber-frames",
	"tx-fcs-errors",
	"tx-control-frames",
	"tx-oversize-frames",
	"tx-undersize-frames",
	"tx-fragmented-frames",
};

/* Fill in a buffer with the strings which correspond to the
 * stats */
static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
{
	struct gfar_private *priv = netdev_priv(dev);

	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
		memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
	else
		memcpy(buf, stat_gstrings,
				GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
}

/* Fill in an array of 64-bit statistics from various sources.
 * This array will be appended to the end of the ethtool_stats
 * structure, and returned to user space
 */
static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy, u64 * buf)
{
	int i;
	struct gfar_private *priv = netdev_priv(dev);
	struct gfar __iomem *regs = priv->gfargrp[0].regs;
	u64 *extra = (u64 *) & priv->extra_stats;

	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
		u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
		struct gfar_stats *stats = (struct gfar_stats *) buf;

		for (i = 0; i < GFAR_RMON_LEN; i++)
			stats->rmon[i] = (u64) gfar_read(&rmon[i]);

		for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
			stats->extra[i] = extra[i];
	} else
		for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
			buf[i] = extra[i];
}

static int gfar_sset_count(struct net_device *dev, int sset)
{
	struct gfar_private *priv = netdev_priv(dev);

	switch (sset) {
	case ETH_SS_STATS:
		if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
			return GFAR_STATS_LEN;
		else
			return GFAR_EXTRA_STATS_LEN;
	default:
		return -EOPNOTSUPP;
	}
}

/* Fills in the drvinfo structure with some basic info */
static void gfar_gdrvinfo(struct net_device *dev, struct
	      ethtool_drvinfo *drvinfo)
{
	strncpy(drvinfo->driver, DRV_NAME, GFAR_INFOSTR_LEN);
	strncpy(drvinfo->version, gfar_driver_version, GFAR_INFOSTR_LEN);
	strncpy(drvinfo->fw_version, "N/A", GFAR_INFOSTR_LEN);
	strncpy(drvinfo->bus_info, "N/A", GFAR_INFOSTR_LEN);
	drvinfo->regdump_len = 0;
	drvinfo->eedump_len = 0;
}


static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	struct gfar_private *priv = netdev_priv(dev);
	struct phy_device *phydev = priv->phydev;

	if (NULL == phydev)
		return -ENODEV;

	return phy_ethtool_sset(phydev, cmd);
}


/* Return the current settings in the ethtool_cmd structure */
static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	struct gfar_private *priv = netdev_priv(dev);
	struct phy_device *phydev = priv->phydev;
	struct gfar_priv_rx_q *rx_queue = NULL;
	struct gfar_priv_tx_q *tx_queue = NULL;

	if (NULL == phydev)
		return -ENODEV;
	tx_queue = priv->tx_queue[0];
	rx_queue = priv->rx_queue[0];

	/* etsec-1.7 and older versions have only one txic
	 * and rxic regs although they support multiple queues */
	cmd->maxtxpkt = get_icft_value(tx_queue->txic);
	cmd->maxrxpkt = get_icft_value(rx_queue->rxic);

	return phy_ethtool_gset(phydev, cmd);
}

/* Return the length of the register structure */
static int gfar_reglen(struct net_device *dev)
{
	return sizeof (struct gfar);
}

/* Return a dump of the GFAR register space */
static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
{
	int i;
	struct gfar_private *priv = netdev_priv(dev);
	u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
	u32 *buf = (u32 *) regbuf;

	for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
		buf[i] = gfar_read(&theregs[i]);
}

/* Convert microseconds to ethernet clock ticks, which changes
 * depending on what speed the controller is running at */
static unsigned int gfar_usecs2ticks(struct gfar_private *priv, unsigned int usecs)
{
	unsigned int count;

	/* The timer is different, depending on the interface speed */
	switch (priv->phydev->speed) {
	case SPEED_1000:
		count = GFAR_GBIT_TIME;
		break;
	case SPEED_100:
		count = GFAR_100_TIME;
		break;
	case SPEED_10:
	default:
		count = GFAR_10_TIME;
		break;
	}

	/* Make sure we return a number greater than 0
	 * if usecs > 0 */
	return (usecs * 1000 + count - 1) / count;
}

/* Convert ethernet clock ticks to microseconds */
static unsigned int gfar_ticks2usecs(struct gfar_private *priv, unsigned int ticks)
{
	unsigned int count;

	/* The timer is different, depending on the interface speed */
	switch (priv->phydev->speed) {
	case SPEED_1000:
		count = GFAR_GBIT_TIME;
		break;
	case SPEED_100:
		count = GFAR_100_TIME;
		break;
	case SPEED_10:
	default:
		count = GFAR_10_TIME;
		break;
	}

	/* Make sure we return a number greater than 0 */
	/* if ticks is > 0 */
	return (ticks * count) / 1000;
}

/* Get the coalescing parameters, and put them in the cvals
 * structure.  */
static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
{
	struct gfar_private *priv = netdev_priv(dev);
	struct gfar_priv_rx_q *rx_queue = NULL;
	struct gfar_priv_tx_q *tx_queue = NULL;
	unsigned long rxtime;
	unsigned long rxcount;
	unsigned long txtime;
	unsigned long txcount;

	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
		return -EOPNOTSUPP;

	if (NULL == priv->phydev)
		return -ENODEV;

	rx_queue = priv->rx_queue[0];
	tx_queue = priv->tx_queue[0];

	rxtime  = get_ictt_value(rx_queue->rxic);
	rxcount = get_icft_value(rx_queue->rxic);
	txtime  = get_ictt_value(tx_queue->txic);
	txcount = get_icft_value(tx_queue->txic);
	cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
	cvals->rx_max_coalesced_frames = rxcount;

	cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
	cvals->tx_max_coalesced_frames = txcount;

	cvals->use_adaptive_rx_coalesce = 0;
	cvals->use_adaptive_tx_coalesce = 0;

	cvals->pkt_rate_low = 0;
	cvals->rx_coalesce_usecs_low = 0;
	cvals->rx_max_coalesced_frames_low = 0;
	cvals->tx_coalesce_usecs_low = 0;
	cvals->tx_max_coalesced_frames_low = 0;

	/* When the packet rate is below pkt_rate_high but above
	 * pkt_rate_low (both measured in packets per second) the
	 * normal {rx,tx}_* coalescing parameters are used.
	 */

	/* When the packet rate is (measured in packets per second)
	 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
	 * used.
	 */
	cvals->pkt_rate_high = 0;
	cvals->rx_coalesce_usecs_high = 0;
	cvals->rx_max_coalesced_frames_high = 0;
	cvals->tx_coalesce_usecs_high = 0;
	cvals->tx_max_coalesced_frames_high = 0;

	/* How often to do adaptive coalescing packet rate sampling,
	 * measured in seconds.  Must not be zero.
	 */
	cvals->rate_sample_interval = 0;

	return 0;
}

/* Change the coalescing values.
 * Both cvals->*_usecs and cvals->*_frames have to be > 0
 * in order for coalescing to be active
 */
static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
{
	struct gfar_private *priv = netdev_priv(dev);
	int i = 0;

	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
		return -EOPNOTSUPP;

	/* Set up rx coalescing */
	/* As of now, we will enable/disable coalescing for all
	 * queues together in case of eTSEC2, this will be modified
	 * along with the ethtool interface */
	if ((cvals->rx_coalesce_usecs == 0) ||
	    (cvals->rx_max_coalesced_frames == 0)) {
		for (i = 0; i < priv->num_rx_queues; i++)
			priv->rx_queue[i]->rxcoalescing = 0;
	} else {
		for (i = 0; i < priv->num_rx_queues; i++)
			priv->rx_queue[i]->rxcoalescing = 1;
	}

	if (NULL == priv->phydev)
		return -ENODEV;

	/* Check the bounds of the values */
	if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
		pr_info("Coalescing is limited to %d microseconds\n",
				GFAR_MAX_COAL_USECS);
		return -EINVAL;
	}

	if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
		pr_info("Coalescing is limited to %d frames\n",
				GFAR_MAX_COAL_FRAMES);
		return -EINVAL;
	}

	for (i = 0; i < priv->num_rx_queues; i++) {
		priv->rx_queue[i]->rxic = mk_ic_value(
			cvals->rx_max_coalesced_frames,
			gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
	}

	/* Set up tx coalescing */
	if ((cvals->tx_coalesce_usecs == 0) ||
	    (cvals->tx_max_coalesced_frames == 0)) {
		for (i = 0; i < priv->num_tx_queues; i++)
			priv->tx_queue[i]->txcoalescing = 0;
	} else {
		for (i = 0; i < priv->num_tx_queues; i++)
			priv->tx_queue[i]->txcoalescing = 1;
	}

	/* Check the bounds of the values */
	if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
		pr_info("Coalescing is limited to %d microseconds\n",
				GFAR_MAX_COAL_USECS);
		return -EINVAL;
	}

	if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
		pr_info("Coalescing is limited to %d frames\n",
				GFAR_MAX_COAL_FRAMES);
		return -EINVAL;
	}

	for (i = 0; i < priv->num_tx_queues; i++) {
		priv->tx_queue[i]->txic = mk_ic_value(
			cvals->tx_max_coalesced_frames,
			gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
	}

	gfar_configure_coalescing(priv, 0xFF, 0xFF);

	return 0;
}

/* Fills in rvals with the current ring parameters.  Currently,
 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 * jumbo are ignored by the driver */
static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals)
{
	struct gfar_private *priv = netdev_priv(dev);
	struct gfar_priv_tx_q *tx_queue = NULL;
	struct gfar_priv_rx_q *rx_queue = NULL;

	tx_queue = priv->tx_queue[0];
	rx_queue = priv->rx_queue[0];

	rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
	rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
	rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
	rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;

	/* Values changeable by the user.  The valid values are
	 * in the range 1 to the "*_max_pending" counterpart above.
	 */
	rvals->rx_pending = rx_queue->rx_ring_size;
	rvals->rx_mini_pending = rx_queue->rx_ring_size;
	rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
	rvals->tx_pending = tx_queue->tx_ring_size;
}

/* Change the current ring parameters, stopping the controller if
 * necessary so that we don't mess things up while we're in
 * motion.  We wait for the ring to be clean before reallocating
 * the rings. */
static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals)
{
	struct gfar_private *priv = netdev_priv(dev);
	int err = 0, i = 0;

	if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
		return -EINVAL;

	if (!is_power_of_2(rvals->rx_pending)) {
		printk("%s: Ring sizes must be a power of 2\n",
				dev->name);
		return -EINVAL;
	}

	if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
		return -EINVAL;

	if (!is_power_of_2(rvals->tx_pending)) {
		printk("%s: Ring sizes must be a power of 2\n",
				dev->name);
		return -EINVAL;
	}


	if (dev->flags & IFF_UP) {
		unsigned long flags;

		/* Halt TX and RX, and process the frames which
		 * have already been received */
		local_irq_save(flags);
		lock_tx_qs(priv);
		lock_rx_qs(priv);

		gfar_halt(dev);

		unlock_rx_qs(priv);
		unlock_tx_qs(priv);
		local_irq_restore(flags);

		for (i = 0; i < priv->num_rx_queues; i++)
			gfar_clean_rx_ring(priv->rx_queue[i],
					priv->rx_queue[i]->rx_ring_size);

		/* Now we take down the rings to rebuild them */
		stop_gfar(dev);
	}

	/* Change the size */
	for (i = 0; i < priv->num_rx_queues; i++) {
		priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
		priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
		priv->tx_queue[i]->num_txbdfree = priv->tx_queue[i]->tx_ring_size;
	}

	/* Rebuild the rings with the new size */
	if (dev->flags & IFF_UP) {
		err = startup_gfar(dev);
		netif_tx_wake_all_queues(dev);
	}
	return err;
}

static int gfar_set_rx_csum(struct net_device *dev, uint32_t data)
{
	struct gfar_private *priv = netdev_priv(dev);
	unsigned long flags;
	int err = 0, i = 0;

	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
		return -EOPNOTSUPP;


	if (dev->flags & IFF_UP) {
		/* Halt TX and RX, and process the frames which
		 * have already been received */
		local_irq_save(flags);
		lock_tx_qs(priv);
		lock_rx_qs(priv);

		gfar_halt(dev);

		unlock_tx_qs(priv);
		unlock_rx_qs(priv);
		local_irq_restore(flags);

		for (i = 0; i < priv->num_rx_queues; i++)
			gfar_clean_rx_ring(priv->rx_queue[i],
					priv->rx_queue[i]->rx_ring_size);

		/* Now we take down the rings to rebuild them */
		stop_gfar(dev);
	}

	spin_lock_irqsave(&priv->bflock, flags);
	priv->rx_csum_enable = data;
	spin_unlock_irqrestore(&priv->bflock, flags);

	if (dev->flags & IFF_UP) {
		err = startup_gfar(dev);
		netif_tx_wake_all_queues(dev);
	}
	return err;
}

static uint32_t gfar_get_rx_csum(struct net_device *dev)
{
	struct gfar_private *priv = netdev_priv(dev);

	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
		return 0;

	return priv->rx_csum_enable;
}

static int gfar_set_tx_csum(struct net_device *dev, uint32_t data)
{
	struct gfar_private *priv = netdev_priv(dev);

	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
		return -EOPNOTSUPP;

	netif_tx_lock_bh(dev);

	if (data)
		dev->features |= NETIF_F_IP_CSUM;
	else
		dev->features &= ~NETIF_F_IP_CSUM;

	netif_tx_unlock_bh(dev);

	return 0;
}

static uint32_t gfar_get_tx_csum(struct net_device *dev)
{
	struct gfar_private *priv = netdev_priv(dev);

	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
		return 0;

	return (dev->features & NETIF_F_IP_CSUM) != 0;
}

static uint32_t gfar_get_msglevel(struct net_device *dev)
{
	struct gfar_private *priv = netdev_priv(dev);
	return priv->msg_enable;
}

static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
{
	struct gfar_private *priv = netdev_priv(dev);
	priv->msg_enable = data;
}

#ifdef CONFIG_PM
static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
	struct gfar_private *priv = netdev_priv(dev);

	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
		wol->supported = WAKE_MAGIC;
		wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
	} else {
		wol->supported = wol->wolopts = 0;
	}
}

static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
	struct gfar_private *priv = netdev_priv(dev);
	unsigned long flags;

	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
	    wol->wolopts != 0)
		return -EINVAL;

	if (wol->wolopts & ~WAKE_MAGIC)
		return -EINVAL;

	device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);

	spin_lock_irqsave(&priv->bflock, flags);
	priv->wol_en =  !!device_may_wakeup(&dev->dev);
	spin_unlock_irqrestore(&priv->bflock, flags);

	return 0;
}
#endif

static int gfar_ethflow_to_class(int flow_type, u64 *class)
{
	switch (flow_type) {
	case TCP_V4_FLOW:
		*class = CLASS_CODE_TCP_IPV4;
		break;
	case UDP_V4_FLOW:
		*class = CLASS_CODE_UDP_IPV4;
		break;
	case AH_V4_FLOW:
	case ESP_V4_FLOW:
		*class = CLASS_CODE_AH_ESP_IPV4;
		break;
	case SCTP_V4_FLOW:
		*class = CLASS_CODE_SCTP_IPV4;
		break;
	case TCP_V6_FLOW:
		*class = CLASS_CODE_TCP_IPV6;
		break;
	case UDP_V6_FLOW:
		*class = CLASS_CODE_UDP_IPV6;
		break;
	case AH_V6_FLOW:
	case ESP_V6_FLOW:
		*class = CLASS_CODE_AH_ESP_IPV6;
		break;
	case SCTP_V6_FLOW:
		*class = CLASS_CODE_SCTP_IPV6;
		break;
	default:
		return 0;
	}

	return 1;
}

static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
{
	u32 fcr = 0x0, fpr = FPR_FILER_MASK;

	if (ethflow & RXH_L2DA) {
		fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
			RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
		ftp_rqfpr[priv->cur_filer_idx] = fpr;
		ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;

		fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
				RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
		ftp_rqfpr[priv->cur_filer_idx] = fpr;
		ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

	if (ethflow & RXH_VLAN) {
		fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
				RQFCR_AND | RQFCR_HASHTBL_0;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		ftp_rqfpr[priv->cur_filer_idx] = fpr;
		ftp_rqfcr[priv->cur_filer_idx] = fcr;
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

	if (ethflow & RXH_IP_SRC) {
		fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
			RQFCR_AND | RQFCR_HASHTBL_0;
		ftp_rqfpr[priv->cur_filer_idx] = fpr;
		ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

	if (ethflow & (RXH_IP_DST)) {
		fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
			RQFCR_AND | RQFCR_HASHTBL_0;
		ftp_rqfpr[priv->cur_filer_idx] = fpr;
		ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

	if (ethflow & RXH_L3_PROTO) {
		fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
			RQFCR_AND | RQFCR_HASHTBL_0;
		ftp_rqfpr[priv->cur_filer_idx] = fpr;
		ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

	if (ethflow & RXH_L4_B_0_1) {
		fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
			RQFCR_AND | RQFCR_HASHTBL_0;
		ftp_rqfpr[priv->cur_filer_idx] = fpr;
		ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

	if (ethflow & RXH_L4_B_2_3) {
		fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
			RQFCR_AND | RQFCR_HASHTBL_0;
		ftp_rqfpr[priv->cur_filer_idx] = fpr;
		ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}
}

static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow, u64 class)
{
	unsigned int last_rule_idx = priv->cur_filer_idx;
	unsigned int cmp_rqfpr;
	unsigned int local_rqfpr[MAX_FILER_IDX + 1];
	unsigned int local_rqfcr[MAX_FILER_IDX + 1];
	int i = 0x0, k = 0x0;
	int j = MAX_FILER_IDX, l = 0x0;

	switch (class) {
	case TCP_V4_FLOW:
		cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
		break;
	case UDP_V4_FLOW:
		cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
		break;
	case TCP_V6_FLOW:
		cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
		break;
	case UDP_V6_FLOW:
		cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
		break;
	case IPV4_FLOW:
		cmp_rqfpr = RQFPR_IPV4;
	case IPV6_FLOW:
		cmp_rqfpr = RQFPR_IPV6;
		break;
	default:
		printk(KERN_ERR "Right now this class is not supported\n");
		return 0;
	}

	for (i = 0; i < MAX_FILER_IDX + 1; i++) {
		local_rqfpr[j] = ftp_rqfpr[i];
		local_rqfcr[j] = ftp_rqfcr[i];
		j--;
		if ((ftp_rqfcr[i] == (RQFCR_PID_PARSE |
			RQFCR_CLE |RQFCR_AND)) &&
			(ftp_rqfpr[i] == cmp_rqfpr))
			break;
	}

	if (i == MAX_FILER_IDX + 1) {
		printk(KERN_ERR "No parse rule found, ");
		printk(KERN_ERR "can't create hash rules\n");
		return 0;
	}

	/* If a match was found, then it begins the starting of a cluster rule
	 * if it was already programmed, we need to overwrite these rules
	 */
	for (l = i+1; l < MAX_FILER_IDX; l++) {
		if ((ftp_rqfcr[l] & RQFCR_CLE) &&
			!(ftp_rqfcr[l] & RQFCR_AND)) {
			ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
				RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
			ftp_rqfpr[l] = FPR_FILER_MASK;
			gfar_write_filer(priv, l, ftp_rqfcr[l], ftp_rqfpr[l]);
			break;
		}

		if (!(ftp_rqfcr[l] & RQFCR_CLE) && (ftp_rqfcr[l] & RQFCR_AND))
			continue;
		else {
			local_rqfpr[j] = ftp_rqfpr[l];
			local_rqfcr[j] = ftp_rqfcr[l];
			j--;
		}
	}

	priv->cur_filer_idx = l - 1;
	last_rule_idx = l;

	/* hash rules */
	ethflow_to_filer_rules(priv, ethflow);

	/* Write back the popped out rules again */
	for (k = j+1; k < MAX_FILER_IDX; k++) {
		ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
		ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
		gfar_write_filer(priv, priv->cur_filer_idx,
				local_rqfcr[k], local_rqfpr[k]);
		if (!priv->cur_filer_idx)
			break;
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

	return 1;
}

static int gfar_set_hash_opts(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
{
	u64 class;

	if (!gfar_ethflow_to_class(cmd->flow_type, &class))
		return -EINVAL;

	if (class < CLASS_CODE_USER_PROG1 ||
			class > CLASS_CODE_SCTP_IPV6)
		return -EINVAL;

	/* write the filer rules here */
	if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
		return -1;

	return 0;
}

static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
{
	struct gfar_private *priv = netdev_priv(dev);
	int ret = 0;

	switch(cmd->cmd) {
	case ETHTOOL_SRXFH:
		ret = gfar_set_hash_opts(priv, cmd);
		break;
	default:
		ret = -EINVAL;
	}

	return ret;
}

const struct ethtool_ops gfar_ethtool_ops = {
	.get_settings = gfar_gsettings,
	.set_settings = gfar_ssettings,
	.get_drvinfo = gfar_gdrvinfo,
	.get_regs_len = gfar_reglen,
	.get_regs = gfar_get_regs,
	.get_link = ethtool_op_get_link,
	.get_coalesce = gfar_gcoalesce,
	.set_coalesce = gfar_scoalesce,
	.get_ringparam = gfar_gringparam,
	.set_ringparam = gfar_sringparam,
	.get_strings = gfar_gstrings,
	.get_sset_count = gfar_sset_count,
	.get_ethtool_stats = gfar_fill_stats,
	.get_rx_csum = gfar_get_rx_csum,
	.get_tx_csum = gfar_get_tx_csum,
	.set_rx_csum = gfar_set_rx_csum,
	.set_tx_csum = gfar_set_tx_csum,
	.set_sg = ethtool_op_set_sg,
	.get_msglevel = gfar_get_msglevel,
	.set_msglevel = gfar_set_msglevel,
#ifdef CONFIG_PM
	.get_wol = gfar_get_wol,
	.set_wol = gfar_set_wol,
#endif
	.set_rxnfc = gfar_set_nfc,
};