aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/ixgbevf/ethtool.c
blob: fa29b3c8c464b60fb8261dff47899aa25a7be55f (plain) (blame)
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
/*******************************************************************************

  Intel 82599 Virtual Function driver
  Copyright(c) 1999 - 2009 Intel Corporation.

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  more details.

  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Contact Information:
  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

*******************************************************************************/

/* ethtool support for ixgbevf */

#include <linux/types.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/vmalloc.h>
#include <linux/if_vlan.h>
#include <linux/uaccess.h>

#include "ixgbevf.h"

#define IXGBE_ALL_RAR_ENTRIES 16

#ifdef ETHTOOL_GSTATS
struct ixgbe_stats {
	char stat_string[ETH_GSTRING_LEN];
	int sizeof_stat;
	int stat_offset;
	int base_stat_offset;
	int saved_reset_offset;
};

#define IXGBEVF_STAT(m, b, r)  sizeof(((struct ixgbevf_adapter *)0)->m), \
			    offsetof(struct ixgbevf_adapter, m),         \
			    offsetof(struct ixgbevf_adapter, b),         \
			    offsetof(struct ixgbevf_adapter, r)
static struct ixgbe_stats ixgbe_gstrings_stats[] = {
	{"rx_packets", IXGBEVF_STAT(stats.vfgprc, stats.base_vfgprc,
				    stats.saved_reset_vfgprc)},
	{"tx_packets", IXGBEVF_STAT(stats.vfgptc, stats.base_vfgptc,
				    stats.saved_reset_vfgptc)},
	{"rx_bytes", IXGBEVF_STAT(stats.vfgorc, stats.base_vfgorc,
				  stats.saved_reset_vfgorc)},
	{"tx_bytes", IXGBEVF_STAT(stats.vfgotc, stats.base_vfgotc,
				  stats.saved_reset_vfgotc)},
	{"tx_busy", IXGBEVF_STAT(tx_busy, zero_base, zero_base)},
	{"multicast", IXGBEVF_STAT(stats.vfmprc, stats.base_vfmprc,
				   stats.saved_reset_vfmprc)},
	{"rx_csum_offload_good", IXGBEVF_STAT(hw_csum_rx_good, zero_base,
					      zero_base)},
	{"rx_csum_offload_errors", IXGBEVF_STAT(hw_csum_rx_error, zero_base,
						zero_base)},
	{"tx_csum_offload_ctxt", IXGBEVF_STAT(hw_csum_tx_good, zero_base,
					      zero_base)},
	{"rx_header_split", IXGBEVF_STAT(rx_hdr_split, zero_base, zero_base)},
};

#define IXGBE_QUEUE_STATS_LEN 0
#define IXGBE_GLOBAL_STATS_LEN	ARRAY_SIZE(ixgbe_gstrings_stats)

#define IXGBEVF_STATS_LEN (IXGBE_GLOBAL_STATS_LEN + IXGBE_QUEUE_STATS_LEN)
#endif /* ETHTOOL_GSTATS */
#ifdef ETHTOOL_TEST
static const char ixgbe_gstrings_test[][ETH_GSTRING_LEN] = {
	"Register test  (offline)",
	"Link test   (on/offline)"
};
#define IXGBE_TEST_LEN (sizeof(ixgbe_gstrings_test) / ETH_GSTRING_LEN)
#endif /* ETHTOOL_TEST */

static int ixgbevf_get_settings(struct net_device *netdev,
				struct ethtool_cmd *ecmd)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_hw *hw = &adapter->hw;
	u32 link_speed = 0;
	bool link_up;

	ecmd->supported = SUPPORTED_10000baseT_Full;
	ecmd->autoneg = AUTONEG_DISABLE;
	ecmd->transceiver = XCVR_DUMMY1;
	ecmd->port = -1;

	hw->mac.ops.check_link(hw, &link_speed, &link_up, false);

	if (link_up) {
		ecmd->speed = (link_speed == IXGBE_LINK_SPEED_10GB_FULL) ?
			       SPEED_10000 : SPEED_1000;
		ecmd->duplex = DUPLEX_FULL;
	} else {
		ecmd->speed = -1;
		ecmd->duplex = -1;
	}

	return 0;
}

static u32 ixgbevf_get_rx_csum(struct net_device *netdev)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	return adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED;
}

static int ixgbevf_set_rx_csum(struct net_device *netdev, u32 data)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	if (data)
		adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
	else
		adapter->flags &= ~IXGBE_FLAG_RX_CSUM_ENABLED;

	if (netif_running(netdev)) {
		if (!adapter->dev_closed)
			ixgbevf_reinit_locked(adapter);
	} else {
		ixgbevf_reset(adapter);
	}

	return 0;
}

static int ixgbevf_set_tso(struct net_device *netdev, u32 data)
{
	if (data) {
		netdev->features |= NETIF_F_TSO;
		netdev->features |= NETIF_F_TSO6;
	} else {
		netif_tx_stop_all_queues(netdev);
		netdev->features &= ~NETIF_F_TSO;
		netdev->features &= ~NETIF_F_TSO6;
		netif_tx_start_all_queues(netdev);
	}
	return 0;
}

static u32 ixgbevf_get_msglevel(struct net_device *netdev)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	return adapter->msg_enable;
}

static void ixgbevf_set_msglevel(struct net_device *netdev, u32 data)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	adapter->msg_enable = data;
}

#define IXGBE_GET_STAT(_A_, _R_) (_A_->stats._R_)

static char *ixgbevf_reg_names[] = {
	"IXGBE_VFCTRL",
	"IXGBE_VFSTATUS",
	"IXGBE_VFLINKS",
	"IXGBE_VFRXMEMWRAP",
	"IXGBE_VFRTIMER",
	"IXGBE_VTEICR",
	"IXGBE_VTEICS",
	"IXGBE_VTEIMS",
	"IXGBE_VTEIMC",
	"IXGBE_VTEIAC",
	"IXGBE_VTEIAM",
	"IXGBE_VTEITR",
	"IXGBE_VTIVAR",
	"IXGBE_VTIVAR_MISC",
	"IXGBE_VFRDBAL0",
	"IXGBE_VFRDBAL1",
	"IXGBE_VFRDBAH0",
	"IXGBE_VFRDBAH1",
	"IXGBE_VFRDLEN0",
	"IXGBE_VFRDLEN1",
	"IXGBE_VFRDH0",
	"IXGBE_VFRDH1",
	"IXGBE_VFRDT0",
	"IXGBE_VFRDT1",
	"IXGBE_VFRXDCTL0",
	"IXGBE_VFRXDCTL1",
	"IXGBE_VFSRRCTL0",
	"IXGBE_VFSRRCTL1",
	"IXGBE_VFPSRTYPE",
	"IXGBE_VFTDBAL0",
	"IXGBE_VFTDBAL1",
	"IXGBE_VFTDBAH0",
	"IXGBE_VFTDBAH1",
	"IXGBE_VFTDLEN0",
	"IXGBE_VFTDLEN1",
	"IXGBE_VFTDH0",
	"IXGBE_VFTDH1",
	"IXGBE_VFTDT0",
	"IXGBE_VFTDT1",
	"IXGBE_VFTXDCTL0",
	"IXGBE_VFTXDCTL1",
	"IXGBE_VFTDWBAL0",
	"IXGBE_VFTDWBAL1",
	"IXGBE_VFTDWBAH0",
	"IXGBE_VFTDWBAH1"
};


static int ixgbevf_get_regs_len(struct net_device *netdev)
{
	return (ARRAY_SIZE(ixgbevf_reg_names)) * sizeof(u32);
}

static void ixgbevf_get_regs(struct net_device *netdev,
			     struct ethtool_regs *regs,
			     void *p)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_hw *hw = &adapter->hw;
	u32 *regs_buff = p;
	u32 regs_len = ixgbevf_get_regs_len(netdev);
	u8 i;

	memset(p, 0, regs_len);

	regs->version = (1 << 24) | hw->revision_id << 16 | hw->device_id;

	/* General Registers */
	regs_buff[0] = IXGBE_READ_REG(hw, IXGBE_VFCTRL);
	regs_buff[1] = IXGBE_READ_REG(hw, IXGBE_VFSTATUS);
	regs_buff[2] = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
	regs_buff[3] = IXGBE_READ_REG(hw, IXGBE_VFRXMEMWRAP);
	regs_buff[4] = IXGBE_READ_REG(hw, IXGBE_VFRTIMER);

	/* Interrupt */
	/* don't read EICR because it can clear interrupt causes, instead
	 * read EICS which is a shadow but doesn't clear EICR */
	regs_buff[5] = IXGBE_READ_REG(hw, IXGBE_VTEICS);
	regs_buff[6] = IXGBE_READ_REG(hw, IXGBE_VTEICS);
	regs_buff[7] = IXGBE_READ_REG(hw, IXGBE_VTEIMS);
	regs_buff[8] = IXGBE_READ_REG(hw, IXGBE_VTEIMC);
	regs_buff[9] = IXGBE_READ_REG(hw, IXGBE_VTEIAC);
	regs_buff[10] = IXGBE_READ_REG(hw, IXGBE_VTEIAM);
	regs_buff[11] = IXGBE_READ_REG(hw, IXGBE_VTEITR(0));
	regs_buff[12] = IXGBE_READ_REG(hw, IXGBE_VTIVAR(0));
	regs_buff[13] = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC);

	/* Receive DMA */
	for (i = 0; i < 2; i++)
		regs_buff[14 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDBAL(i));
	for (i = 0; i < 2; i++)
		regs_buff[16 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDBAH(i));
	for (i = 0; i < 2; i++)
		regs_buff[18 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDLEN(i));
	for (i = 0; i < 2; i++)
		regs_buff[20 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDH(i));
	for (i = 0; i < 2; i++)
		regs_buff[22 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDT(i));
	for (i = 0; i < 2; i++)
		regs_buff[24 + i] = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
	for (i = 0; i < 2; i++)
		regs_buff[26 + i] = IXGBE_READ_REG(hw, IXGBE_VFSRRCTL(i));

	/* Receive */
	regs_buff[28] = IXGBE_READ_REG(hw, IXGBE_VFPSRTYPE);

	/* Transmit */
	for (i = 0; i < 2; i++)
		regs_buff[29 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDBAL(i));
	for (i = 0; i < 2; i++)
		regs_buff[31 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDBAH(i));
	for (i = 0; i < 2; i++)
		regs_buff[33 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDLEN(i));
	for (i = 0; i < 2; i++)
		regs_buff[35 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDH(i));
	for (i = 0; i < 2; i++)
		regs_buff[37 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDT(i));
	for (i = 0; i < 2; i++)
		regs_buff[39 + i] = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
	for (i = 0; i < 2; i++)
		regs_buff[41 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDWBAL(i));
	for (i = 0; i < 2; i++)
		regs_buff[43 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDWBAH(i));

	for (i = 0; i < ARRAY_SIZE(ixgbevf_reg_names); i++)
		hw_dbg(hw, "%s\t%8.8x\n", ixgbevf_reg_names[i], regs_buff[i]);
}

static void ixgbevf_get_drvinfo(struct net_device *netdev,
				struct ethtool_drvinfo *drvinfo)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);

	strlcpy(drvinfo->driver, ixgbevf_driver_name, 32);
	strlcpy(drvinfo->version, ixgbevf_driver_version, 32);

	strlcpy(drvinfo->fw_version, "N/A", 4);
	strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
}

static void ixgbevf_get_ringparam(struct net_device *netdev,
				  struct ethtool_ringparam *ring)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	struct ixgbevf_ring *tx_ring = adapter->tx_ring;
	struct ixgbevf_ring *rx_ring = adapter->rx_ring;

	ring->rx_max_pending = IXGBEVF_MAX_RXD;
	ring->tx_max_pending = IXGBEVF_MAX_TXD;
	ring->rx_mini_max_pending = 0;
	ring->rx_jumbo_max_pending = 0;
	ring->rx_pending = rx_ring->count;
	ring->tx_pending = tx_ring->count;
	ring->rx_mini_pending = 0;
	ring->rx_jumbo_pending = 0;
}

static int ixgbevf_set_ringparam(struct net_device *netdev,
				 struct ethtool_ringparam *ring)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	struct ixgbevf_ring *tx_ring = NULL, *rx_ring = NULL;
	int i, err = 0;
	u32 new_rx_count, new_tx_count;

	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
		return -EINVAL;

	new_rx_count = max(ring->rx_pending, (u32)IXGBEVF_MIN_RXD);
	new_rx_count = min(new_rx_count, (u32)IXGBEVF_MAX_RXD);
	new_rx_count = ALIGN(new_rx_count, IXGBE_REQ_RX_DESCRIPTOR_MULTIPLE);

	new_tx_count = max(ring->tx_pending, (u32)IXGBEVF_MIN_TXD);
	new_tx_count = min(new_tx_count, (u32)IXGBEVF_MAX_TXD);
	new_tx_count = ALIGN(new_tx_count, IXGBE_REQ_TX_DESCRIPTOR_MULTIPLE);

	if ((new_tx_count == adapter->tx_ring->count) &&
	    (new_rx_count == adapter->rx_ring->count)) {
		/* nothing to do */
		return 0;
	}

	while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state))
		msleep(1);

	/*
	 * If the adapter isn't up and running then just set the
	 * new parameters and scurry for the exits.
	 */
	if (!netif_running(adapter->netdev)) {
		for (i = 0; i < adapter->num_tx_queues; i++)
			adapter->tx_ring[i].count = new_tx_count;
		for (i = 0; i < adapter->num_rx_queues; i++)
			adapter->rx_ring[i].count = new_rx_count;
		adapter->tx_ring_count = new_tx_count;
		adapter->rx_ring_count = new_rx_count;
		goto clear_reset;
	}

	tx_ring = kcalloc(adapter->num_tx_queues,
			  sizeof(struct ixgbevf_ring), GFP_KERNEL);
	if (!tx_ring) {
		err = -ENOMEM;
		goto clear_reset;
	}

	rx_ring = kcalloc(adapter->num_rx_queues,
			  sizeof(struct ixgbevf_ring), GFP_KERNEL);
	if (!rx_ring) {
		err = -ENOMEM;
		goto err_rx_setup;
	}

	ixgbevf_down(adapter);

	memcpy(tx_ring, adapter->tx_ring,
	       adapter->num_tx_queues * sizeof(struct ixgbevf_ring));
	for (i = 0; i < adapter->num_tx_queues; i++) {
		tx_ring[i].count = new_tx_count;
		err = ixgbevf_setup_tx_resources(adapter, &tx_ring[i]);
		if (err) {
			while (i) {
				i--;
				ixgbevf_free_tx_resources(adapter,
							  &tx_ring[i]);
			}
			goto err_tx_ring_setup;
		}
		tx_ring[i].v_idx = adapter->tx_ring[i].v_idx;
	}

	memcpy(rx_ring, adapter->rx_ring,
	       adapter->num_rx_queues * sizeof(struct ixgbevf_ring));
	for (i = 0; i < adapter->num_rx_queues; i++) {
		rx_ring[i].count = new_rx_count;
		err = ixgbevf_setup_rx_resources(adapter, &rx_ring[i]);
		if (err) {
			while (i) {
				i--;
				ixgbevf_free_rx_resources(adapter,
							  &rx_ring[i]);
			}
				goto err_rx_ring_setup;
		}
		rx_ring[i].v_idx = adapter->rx_ring[i].v_idx;
	}

	/*
	 * Only switch to new rings if all the prior allocations
	 * and ring setups have succeeded.
	 */
	kfree(adapter->tx_ring);
	adapter->tx_ring = tx_ring;
	adapter->tx_ring_count = new_tx_count;

	kfree(adapter->rx_ring);
	adapter->rx_ring = rx_ring;
	adapter->rx_ring_count = new_rx_count;

	/* success! */
	ixgbevf_up(adapter);

	goto clear_reset;

err_rx_ring_setup:
	for(i = 0; i < adapter->num_tx_queues; i++)
		ixgbevf_free_tx_resources(adapter, &tx_ring[i]);

err_tx_ring_setup:
	kfree(rx_ring);

err_rx_setup:
	kfree(tx_ring);

clear_reset:
	clear_bit(__IXGBEVF_RESETTING, &adapter->state);
	return err;
}

static int ixgbevf_get_sset_count(struct net_device *dev, int stringset)
{
       switch (stringset) {
       case ETH_SS_TEST:
	       return IXGBE_TEST_LEN;
       case ETH_SS_STATS:
	       return IXGBE_GLOBAL_STATS_LEN;
       default:
	       return -EINVAL;
       }
}

static void ixgbevf_get_ethtool_stats(struct net_device *netdev,
				      struct ethtool_stats *stats, u64 *data)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	int i;

	ixgbevf_update_stats(adapter);
	for (i = 0; i < IXGBE_GLOBAL_STATS_LEN; i++) {
		char *p = (char *)adapter +
			ixgbe_gstrings_stats[i].stat_offset;
		char *b = (char *)adapter +
			ixgbe_gstrings_stats[i].base_stat_offset;
		char *r = (char *)adapter +
			ixgbe_gstrings_stats[i].saved_reset_offset;
		data[i] = ((ixgbe_gstrings_stats[i].sizeof_stat ==
			    sizeof(u64)) ? *(u64 *)p : *(u32 *)p) -
			  ((ixgbe_gstrings_stats[i].sizeof_stat ==
			    sizeof(u64)) ? *(u64 *)b : *(u32 *)b) +
			  ((ixgbe_gstrings_stats[i].sizeof_stat ==
			    sizeof(u64)) ? *(u64 *)r : *(u32 *)r);
	}
}

static void ixgbevf_get_strings(struct net_device *netdev, u32 stringset,
				u8 *data)
{
	char *p = (char *)data;
	int i;

	switch (stringset) {
	case ETH_SS_TEST:
		memcpy(data, *ixgbe_gstrings_test,
		       IXGBE_TEST_LEN * ETH_GSTRING_LEN);
		break;
	case ETH_SS_STATS:
		for (i = 0; i < IXGBE_GLOBAL_STATS_LEN; i++) {
			memcpy(p, ixgbe_gstrings_stats[i].stat_string,
			       ETH_GSTRING_LEN);
			p += ETH_GSTRING_LEN;
		}
		break;
	}
}

static int ixgbevf_link_test(struct ixgbevf_adapter *adapter, u64 *data)
{
	struct ixgbe_hw *hw = &adapter->hw;
	bool link_up;
	u32 link_speed = 0;
	*data = 0;

	hw->mac.ops.check_link(hw, &link_speed, &link_up, true);
	if (!link_up)
		*data = 1;

	return *data;
}

/* ethtool register test data */
struct ixgbevf_reg_test {
	u16 reg;
	u8  array_len;
	u8  test_type;
	u32 mask;
	u32 write;
};

/* In the hardware, registers are laid out either singly, in arrays
 * spaced 0x40 bytes apart, or in contiguous tables.  We assume
 * most tests take place on arrays or single registers (handled
 * as a single-element array) and special-case the tables.
 * Table tests are always pattern tests.
 *
 * We also make provision for some required setup steps by specifying
 * registers to be written without any read-back testing.
 */

#define PATTERN_TEST	1
#define SET_READ_TEST	2
#define WRITE_NO_TEST	3
#define TABLE32_TEST	4
#define TABLE64_TEST_LO	5
#define TABLE64_TEST_HI	6

/* default VF register test */
static const struct ixgbevf_reg_test reg_test_vf[] = {
	{ IXGBE_VFRDBAL(0), 2, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFF80 },
	{ IXGBE_VFRDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_VFRDLEN(0), 2, PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
	{ IXGBE_VFRXDCTL(0), 2, WRITE_NO_TEST, 0, IXGBE_RXDCTL_ENABLE },
	{ IXGBE_VFRDT(0), 2, PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
	{ IXGBE_VFRXDCTL(0), 2, WRITE_NO_TEST, 0, 0 },
	{ IXGBE_VFTDBAL(0), 2, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
	{ IXGBE_VFTDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
	{ IXGBE_VFTDLEN(0), 2, PATTERN_TEST, 0x000FFF80, 0x000FFF80 },
	{ 0, 0, 0, 0 }
};

static const u32 register_test_patterns[] = {
	0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF
};

#define REG_PATTERN_TEST(R, M, W)                                             \
{                                                                             \
	u32 pat, val, before;                                                 \
	for (pat = 0; pat < ARRAY_SIZE(register_test_patterns); pat++) {      \
		before = readl(adapter->hw.hw_addr + R);                      \
		writel((register_test_patterns[pat] & W),                     \
		       (adapter->hw.hw_addr + R));                            \
		val = readl(adapter->hw.hw_addr + R);                         \
		if (val != (register_test_patterns[pat] & W & M)) {           \
			hw_dbg(&adapter->hw,                                  \
			"pattern test reg %04X failed: got "                  \
			"0x%08X expected 0x%08X\n",                           \
			R, val, (register_test_patterns[pat] & W & M));       \
			*data = R;                                            \
			writel(before, adapter->hw.hw_addr + R);              \
			return 1;                                             \
		}                                                             \
		writel(before, adapter->hw.hw_addr + R);                      \
	}                                                                     \
}

#define REG_SET_AND_CHECK(R, M, W)                                            \
{                                                                             \
	u32 val, before;                                                      \
	before = readl(adapter->hw.hw_addr + R);                              \
	writel((W & M), (adapter->hw.hw_addr + R));                           \
	val = readl(adapter->hw.hw_addr + R);                                 \
	if ((W & M) != (val & M)) {                                           \
		printk(KERN_ERR "set/check reg %04X test failed: got 0x%08X " \
				 "expected 0x%08X\n", R, (val & M), (W & M)); \
		*data = R;                                                    \
		writel(before, (adapter->hw.hw_addr + R));                    \
		return 1;                                                     \
	}                                                                     \
	writel(before, (adapter->hw.hw_addr + R));                            \
}

static int ixgbevf_reg_test(struct ixgbevf_adapter *adapter, u64 *data)
{
	const struct ixgbevf_reg_test *test;
	u32 i;

	test = reg_test_vf;

	/*
	 * Perform the register test, looping through the test table
	 * until we either fail or reach the null entry.
	 */
	while (test->reg) {
		for (i = 0; i < test->array_len; i++) {
			switch (test->test_type) {
			case PATTERN_TEST:
				REG_PATTERN_TEST(test->reg + (i * 0x40),
						test->mask,
						test->write);
				break;
			case SET_READ_TEST:
				REG_SET_AND_CHECK(test->reg + (i * 0x40),
						test->mask,
						test->write);
				break;
			case WRITE_NO_TEST:
				writel(test->write,
				       (adapter->hw.hw_addr + test->reg)
				       + (i * 0x40));
				break;
			case TABLE32_TEST:
				REG_PATTERN_TEST(test->reg + (i * 4),
						test->mask,
						test->write);
				break;
			case TABLE64_TEST_LO:
				REG_PATTERN_TEST(test->reg + (i * 8),
						test->mask,
						test->write);
				break;
			case TABLE64_TEST_HI:
				REG_PATTERN_TEST((test->reg + 4) + (i * 8),
						test->mask,
						test->write);
				break;
			}
		}
		test++;
	}

	*data = 0;
	return *data;
}

static void ixgbevf_diag_test(struct net_device *netdev,
			      struct ethtool_test *eth_test, u64 *data)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
	bool if_running = netif_running(netdev);

	set_bit(__IXGBEVF_TESTING, &adapter->state);
	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
		/* Offline tests */

		hw_dbg(&adapter->hw, "offline testing starting\n");

		/* Link test performed before hardware reset so autoneg doesn't
		 * interfere with test result */
		if (ixgbevf_link_test(adapter, &data[1]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

		if (if_running)
			/* indicate we're in test mode */
			dev_close(netdev);
		else
			ixgbevf_reset(adapter);

		hw_dbg(&adapter->hw, "register testing starting\n");
		if (ixgbevf_reg_test(adapter, &data[0]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

		ixgbevf_reset(adapter);

		clear_bit(__IXGBEVF_TESTING, &adapter->state);
		if (if_running)
			dev_open(netdev);
	} else {
		hw_dbg(&adapter->hw, "online testing starting\n");
		/* Online tests */
		if (ixgbevf_link_test(adapter, &data[1]))
			eth_test->flags |= ETH_TEST_FL_FAILED;

		/* Online tests aren't run; pass by default */
		data[0] = 0;

		clear_bit(__IXGBEVF_TESTING, &adapter->state);
	}
	msleep_interruptible(4 * 1000);
}

static int ixgbevf_nway_reset(struct net_device *netdev)
{
	struct ixgbevf_adapter *adapter = netdev_priv(netdev);

	if (netif_running(netdev)) {
		if (!adapter->dev_closed)
			ixgbevf_reinit_locked(adapter);
	}

	return 0;
}

static struct ethtool_ops ixgbevf_ethtool_ops = {
	.get_settings           = ixgbevf_get_settings,
	.get_drvinfo            = ixgbevf_get_drvinfo,
	.get_regs_len           = ixgbevf_get_regs_len,
	.get_regs               = ixgbevf_get_regs,
	.nway_reset             = ixgbevf_nway_reset,
	.get_link               = ethtool_op_get_link,
	.get_ringparam          = ixgbevf_get_ringparam,
	.set_ringparam          = ixgbevf_set_ringparam,
	.get_rx_csum            = ixgbevf_get_rx_csum,
	.set_rx_csum            = ixgbevf_set_rx_csum,
	.get_tx_csum            = ethtool_op_get_tx_csum,
	.set_tx_csum            = ethtool_op_set_tx_ipv6_csum,
	.get_sg                 = ethtool_op_get_sg,
	.set_sg                 = ethtool_op_set_sg,
	.get_msglevel           = ixgbevf_get_msglevel,
	.set_msglevel           = ixgbevf_set_msglevel,
	.get_tso                = ethtool_op_get_tso,
	.set_tso                = ixgbevf_set_tso,
	.self_test              = ixgbevf_diag_test,
	.get_sset_count         = ixgbevf_get_sset_count,
	.get_strings            = ixgbevf_get_strings,
	.get_ethtool_stats      = ixgbevf_get_ethtool_stats,
};

void ixgbevf_set_ethtool_ops(struct net_device *netdev)
{
	SET_ETHTOOL_OPS(netdev, &ixgbevf_ethtool_ops);
}