summaryrefslogtreecommitdiffstats
path: root/drivers/net/ixgbe/ixgbe_82598.c
blob: c2cdb042c481b1aed175b19614846e30a8fdf52d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
/*******************************************************************************

  Intel 10 Gigabit PCI Express Linux driver
  Copyright(c) 1999 - 2008 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

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

#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/sched.h>

#include "ixgbe.h"
#include "ixgbe_phy.h"

#define IXGBE_82598_MAX_TX_QUEUES 32
#define IXGBE_82598_MAX_RX_QUEUES 64
#define IXGBE_82598_RAR_ENTRIES   16
#define IXGBE_82598_MC_TBL_SIZE  128
#define IXGBE_82598_VFT_TBL_SIZE 128

static s32 ixgbe_get_copper_link_capabilities_82598(struct ixgbe_hw *hw,
                                             ixgbe_link_speed *speed,
                                             bool *autoneg);
static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw);
static s32 ixgbe_setup_copper_link_speed_82598(struct ixgbe_hw *hw,
                                               ixgbe_link_speed speed,
                                               bool autoneg,
                                               bool autoneg_wait_to_complete);

/**
 */
static s32 ixgbe_get_invariants_82598(struct ixgbe_hw *hw)
{
	struct ixgbe_mac_info *mac = &hw->mac;
	struct ixgbe_phy_info *phy = &hw->phy;

	/* Call PHY identify routine to get the phy type */
	ixgbe_identify_phy_generic(hw);

	/* PHY Init */
	switch (phy->type) {
	case ixgbe_phy_tn:
		phy->ops.check_link = &ixgbe_check_phy_link_tnx;
		phy->ops.get_firmware_version =
		             &ixgbe_get_phy_firmware_version_tnx;
		break;
	default:
		break;
	}

	if (mac->ops.get_media_type(hw) == ixgbe_media_type_copper) {
		mac->ops.setup_link = &ixgbe_setup_copper_link_82598;
		mac->ops.setup_link_speed =
		                     &ixgbe_setup_copper_link_speed_82598;
		mac->ops.get_link_capabilities =
		                     &ixgbe_get_copper_link_capabilities_82598;
	}

	mac->mcft_size = IXGBE_82598_MC_TBL_SIZE;
	mac->vft_size = IXGBE_82598_VFT_TBL_SIZE;
	mac->num_rar_entries = IXGBE_82598_RAR_ENTRIES;
	mac->max_rx_queues = IXGBE_82598_MAX_RX_QUEUES;
	mac->max_tx_queues = IXGBE_82598_MAX_TX_QUEUES;

	return 0;
}

/**
 *  ixgbe_get_link_capabilities_82598 - Determines link capabilities
 *  @hw: pointer to hardware structure
 *  @speed: pointer to link speed
 *  @autoneg: boolean auto-negotiation value
 *
 *  Determines the link capabilities by reading the AUTOC register.
 **/
static s32 ixgbe_get_link_capabilities_82598(struct ixgbe_hw *hw,
                                             ixgbe_link_speed *speed,
                                             bool *autoneg)
{
	s32 status = 0;
	s32 autoc_reg;

	autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);

	if (hw->mac.link_settings_loaded) {
		autoc_reg &= ~IXGBE_AUTOC_LMS_ATTACH_TYPE;
		autoc_reg &= ~IXGBE_AUTOC_LMS_MASK;
		autoc_reg |= hw->mac.link_attach_type;
		autoc_reg |= hw->mac.link_mode_select;
	}

	switch (autoc_reg & IXGBE_AUTOC_LMS_MASK) {
	case IXGBE_AUTOC_LMS_1G_LINK_NO_AN:
		*speed = IXGBE_LINK_SPEED_1GB_FULL;
		*autoneg = false;
		break;

	case IXGBE_AUTOC_LMS_10G_LINK_NO_AN:
		*speed = IXGBE_LINK_SPEED_10GB_FULL;
		*autoneg = false;
		break;

	case IXGBE_AUTOC_LMS_1G_AN:
		*speed = IXGBE_LINK_SPEED_1GB_FULL;
		*autoneg = true;
		break;

	case IXGBE_AUTOC_LMS_KX4_AN:
	case IXGBE_AUTOC_LMS_KX4_AN_1G_AN:
		*speed = IXGBE_LINK_SPEED_UNKNOWN;
		if (autoc_reg & IXGBE_AUTOC_KX4_SUPP)
			*speed |= IXGBE_LINK_SPEED_10GB_FULL;
		if (autoc_reg & IXGBE_AUTOC_KX_SUPP)
			*speed |= IXGBE_LINK_SPEED_1GB_FULL;
		*autoneg = true;
		break;

	default:
		status = IXGBE_ERR_LINK_SETUP;
		break;
	}

	return status;
}

/**
 *  ixgbe_get_copper_link_capabilities_82598 - Determines link capabilities
 *  @hw: pointer to hardware structure
 *  @speed: pointer to link speed
 *  @autoneg: boolean auto-negotiation value
 *
 *  Determines the link capabilities by reading the AUTOC register.
 **/
s32 ixgbe_get_copper_link_capabilities_82598(struct ixgbe_hw *hw,
                                             ixgbe_link_speed *speed,
                                             bool *autoneg)
{
	s32 status = IXGBE_ERR_LINK_SETUP;
	u16 speed_ability;

	*speed = 0;
	*autoneg = true;

	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_SPEED_ABILITY,
	                              IXGBE_MDIO_PMA_PMD_DEV_TYPE,
	                              &speed_ability);

	if (status == 0) {
		if (speed_ability & IXGBE_MDIO_PHY_SPEED_10G)
		    *speed |= IXGBE_LINK_SPEED_10GB_FULL;
		if (speed_ability & IXGBE_MDIO_PHY_SPEED_1G)
		    *speed |= IXGBE_LINK_SPEED_1GB_FULL;
	}

	return status;
}

/**
 *  ixgbe_get_media_type_82598 - Determines media type
 *  @hw: pointer to hardware structure
 *
 *  Returns the media type (fiber, copper, backplane)
 **/
static enum ixgbe_media_type ixgbe_get_media_type_82598(struct ixgbe_hw *hw)
{
	enum ixgbe_media_type media_type;

	/* Media type for I82598 is based on device ID */
	switch (hw->device_id) {
	case IXGBE_DEV_ID_82598AF_DUAL_PORT:
	case IXGBE_DEV_ID_82598AF_SINGLE_PORT:
	case IXGBE_DEV_ID_82598EB_CX4:
	case IXGBE_DEV_ID_82598_CX4_DUAL_PORT:
	case IXGBE_DEV_ID_82598EB_XF_LR:
		media_type = ixgbe_media_type_fiber;
		break;
	case IXGBE_DEV_ID_82598AT:
		media_type = ixgbe_media_type_copper;
		break;
	default:
		media_type = ixgbe_media_type_unknown;
		break;
	}

	return media_type;
}

/**
 *  ixgbe_setup_fc_82598 - Configure flow control settings
 *  @hw: pointer to hardware structure
 *  @packetbuf_num: packet buffer number (0-7)
 *
 *  Configures the flow control settings based on SW configuration.  This
 *  function is used for 802.3x flow control configuration only.
 **/
s32 ixgbe_setup_fc_82598(struct ixgbe_hw *hw, s32 packetbuf_num)
{
	u32 frctl_reg;
	u32 rmcs_reg;

	if (packetbuf_num < 0 || packetbuf_num > 7) {
		hw_dbg(hw, "Invalid packet buffer number [%d], expected range is"
		          " 0-7\n", packetbuf_num);
	}

	frctl_reg = IXGBE_READ_REG(hw, IXGBE_FCTRL);
	frctl_reg &= ~(IXGBE_FCTRL_RFCE | IXGBE_FCTRL_RPFCE);

	rmcs_reg = IXGBE_READ_REG(hw, IXGBE_RMCS);
	rmcs_reg &= ~(IXGBE_RMCS_TFCE_PRIORITY | IXGBE_RMCS_TFCE_802_3X);

	/*
	 * 10 gig parts do not have a word in the EEPROM to determine the
	 * default flow control setting, so we explicitly set it to full.
	 */
	if (hw->fc.type == ixgbe_fc_default)
		hw->fc.type = ixgbe_fc_full;

	/*
	 * We want to save off the original Flow Control configuration just in
	 * case we get disconnected and then reconnected into a different hub
	 * or switch with different Flow Control capabilities.
	 */
	hw->fc.original_type = hw->fc.type;

	/*
	 * The possible values of the "flow_control" parameter are:
	 * 0: Flow control is completely disabled
	 * 1: Rx flow control is enabled (we can receive pause frames but not
	 *    send pause frames).
	 * 2: Tx flow control is enabled (we can send pause frames but we do not
	 *    support receiving pause frames)
	 * 3: Both Rx and Tx flow control (symmetric) are enabled.
	 * other: Invalid.
	 */
	switch (hw->fc.type) {
	case ixgbe_fc_none:
		break;
	case ixgbe_fc_rx_pause:
		/*
		 * Rx Flow control is enabled,
		 * and Tx Flow control is disabled.
		 */
		frctl_reg |= IXGBE_FCTRL_RFCE;
		break;
	case ixgbe_fc_tx_pause:
		/*
		 * Tx Flow control is enabled, and Rx Flow control is disabled,
		 * by a software over-ride.
		 */
		rmcs_reg |= IXGBE_RMCS_TFCE_802_3X;
		break;
	case ixgbe_fc_full:
		/*
		 * Flow control (both Rx and Tx) is enabled by a software
		 * over-ride.
		 */
		frctl_reg |= IXGBE_FCTRL_RFCE;
		rmcs_reg |= IXGBE_RMCS_TFCE_802_3X;
		break;
	default:
		/* We should never get here.  The value should be 0-3. */
		hw_dbg(hw, "Flow control param set incorrectly\n");
		break;
	}

	/* Enable 802.3x based flow control settings. */
	IXGBE_WRITE_REG(hw, IXGBE_FCTRL, frctl_reg);
	IXGBE_WRITE_REG(hw, IXGBE_RMCS, rmcs_reg);

	/*
	 * Check for invalid software configuration, zeros are completely
	 * invalid for all parameters used past this point, and if we enable
	 * flow control with zero water marks, we blast flow control packets.
	 */
	if (!hw->fc.low_water || !hw->fc.high_water || !hw->fc.pause_time) {
		hw_dbg(hw, "Flow control structure initialized incorrectly\n");
		return IXGBE_ERR_INVALID_LINK_SETTINGS;
	}

	/*
	 * We need to set up the Receive Threshold high and low water
	 * marks as well as (optionally) enabling the transmission of
	 * XON frames.
	 */
	if (hw->fc.type & ixgbe_fc_tx_pause) {
		if (hw->fc.send_xon) {
			IXGBE_WRITE_REG(hw, IXGBE_FCRTL(packetbuf_num),
			                (hw->fc.low_water | IXGBE_FCRTL_XONE));
		} else {
			IXGBE_WRITE_REG(hw, IXGBE_FCRTL(packetbuf_num),
			                hw->fc.low_water);
		}
		IXGBE_WRITE_REG(hw, IXGBE_FCRTH(packetbuf_num),
		                (hw->fc.high_water)|IXGBE_FCRTH_FCEN);
	}

	IXGBE_WRITE_REG(hw, IXGBE_FCTTV(0), hw->fc.pause_time);
	IXGBE_WRITE_REG(hw, IXGBE_FCRTV, (hw->fc.pause_time >> 1));

	return 0;
}

/**
 *  ixgbe_setup_mac_link_82598 - Configures MAC link settings
 *  @hw: pointer to hardware structure
 *
 *  Configures link settings based on values in the ixgbe_hw struct.
 *  Restarts the link.  Performs autonegotiation if needed.
 **/
static s32 ixgbe_setup_mac_link_82598(struct ixgbe_hw *hw)
{
	u32 autoc_reg;
	u32 links_reg;
	u32 i;
	s32 status = 0;

	autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);

	if (hw->mac.link_settings_loaded) {
		autoc_reg &= ~IXGBE_AUTOC_LMS_ATTACH_TYPE;
		autoc_reg &= ~IXGBE_AUTOC_LMS_MASK;
		autoc_reg |= hw->mac.link_attach_type;
		autoc_reg |= hw->mac.link_mode_select;

		IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
		IXGBE_WRITE_FLUSH(hw);
		msleep(50);
	}

	/* Restart link */
	autoc_reg |= IXGBE_AUTOC_AN_RESTART;
	IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);

	/* Only poll for autoneg to complete if specified to do so */
	if (hw->phy.autoneg_wait_to_complete) {
		if (hw->mac.link_mode_select == IXGBE_AUTOC_LMS_KX4_AN ||
		    hw->mac.link_mode_select == IXGBE_AUTOC_LMS_KX4_AN_1G_AN) {
			links_reg = 0; /* Just in case Autoneg time = 0 */
			for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) {
				links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
				if (links_reg & IXGBE_LINKS_KX_AN_COMP)
					break;
				msleep(100);
			}
			if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) {
				status = IXGBE_ERR_AUTONEG_NOT_COMPLETE;
				hw_dbg(hw, "Autonegotiation did not complete.\n");
			}
		}
	}

	/*
	 * We want to save off the original Flow Control configuration just in
	 * case we get disconnected and then reconnected into a different hub
	 * or switch with different Flow Control capabilities.
	 */
	hw->fc.original_type = hw->fc.type;
	ixgbe_setup_fc_82598(hw, 0);

	/* Add delay to filter out noises during initial link setup */
	msleep(50);

	return status;
}

/**
 *  ixgbe_check_mac_link_82598 - Get link/speed status
 *  @hw: pointer to hardware structure
 *  @speed: pointer to link speed
 *  @link_up: true is link is up, false otherwise
 *  @link_up_wait_to_complete: bool used to wait for link up or not
 *
 *  Reads the links register to determine if link is up and the current speed
 **/
static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw,
                                      ixgbe_link_speed *speed, bool *link_up,
                                      bool link_up_wait_to_complete)
{
	u32 links_reg;
	u32 i;

	links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
	if (link_up_wait_to_complete) {
		for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
			if (links_reg & IXGBE_LINKS_UP) {
				*link_up = true;
				break;
			} else {
				*link_up = false;
			}
			msleep(100);
			links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
		}
	} else {
		if (links_reg & IXGBE_LINKS_UP)
			*link_up = true;
		else
			*link_up = false;
	}

	if (links_reg & IXGBE_LINKS_SPEED)
		*speed = IXGBE_LINK_SPEED_10GB_FULL;
	else
		*speed = IXGBE_LINK_SPEED_1GB_FULL;

	return 0;
}


/**
 *  ixgbe_setup_mac_link_speed_82598 - Set MAC link speed
 *  @hw: pointer to hardware structure
 *  @speed: new link speed
 *  @autoneg: true if auto-negotiation enabled
 *  @autoneg_wait_to_complete: true if waiting is needed to complete
 *
 *  Set the link speed in the AUTOC register and restarts link.
 **/
static s32 ixgbe_setup_mac_link_speed_82598(struct ixgbe_hw *hw,
                                            ixgbe_link_speed speed, bool autoneg,
                                            bool autoneg_wait_to_complete)
{
	s32 status = 0;

	/* If speed is 10G, then check for CX4 or XAUI. */
	if ((speed == IXGBE_LINK_SPEED_10GB_FULL) &&
	    (!(hw->mac.link_attach_type & IXGBE_AUTOC_10G_KX4))) {
		hw->mac.link_mode_select = IXGBE_AUTOC_LMS_10G_LINK_NO_AN;
	} else if ((speed == IXGBE_LINK_SPEED_1GB_FULL) && (!autoneg)) {
		hw->mac.link_mode_select = IXGBE_AUTOC_LMS_1G_LINK_NO_AN;
	} else if (autoneg) {
		/* BX mode - Autonegotiate 1G */
		if (!(hw->mac.link_attach_type & IXGBE_AUTOC_1G_PMA_PMD))
			hw->mac.link_mode_select = IXGBE_AUTOC_LMS_1G_AN;
		else /* KX/KX4 mode */
			hw->mac.link_mode_select = IXGBE_AUTOC_LMS_KX4_AN_1G_AN;
	} else {
		status = IXGBE_ERR_LINK_SETUP;
	}

	if (status == 0) {
		hw->phy.autoneg_wait_to_complete = autoneg_wait_to_complete;

		hw->mac.link_settings_loaded = true;
		/*
		 * Setup and restart the link based on the new values in
		 * ixgbe_hw This will write the AUTOC register based on the new
		 * stored values
		 */
		ixgbe_setup_mac_link_82598(hw);
	}

	return status;
}


/**
 *  ixgbe_setup_copper_link_82598 - Setup copper link settings
 *  @hw: pointer to hardware structure
 *
 *  Configures link settings based on values in the ixgbe_hw struct.
 *  Restarts the link.  Performs autonegotiation if needed.  Restart
 *  phy and wait for autonegotiate to finish.  Then synchronize the
 *  MAC and PHY.
 **/
static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw)
{
	s32 status;

	/* Restart autonegotiation on PHY */
	status = hw->phy.ops.setup_link(hw);

	/* Set MAC to KX/KX4 autoneg, which defaults to Parallel detection */
	hw->mac.link_attach_type = (IXGBE_AUTOC_10G_KX4 | IXGBE_AUTOC_1G_KX);
	hw->mac.link_mode_select = IXGBE_AUTOC_LMS_KX4_AN;

	/* Set up MAC */
	ixgbe_setup_mac_link_82598(hw);

	return status;
}

/**
 *  ixgbe_setup_copper_link_speed_82598 - Set the PHY autoneg advertised field
 *  @hw: pointer to hardware structure
 *  @speed: new link speed
 *  @autoneg: true if autonegotiation enabled
 *  @autoneg_wait_to_complete: true if waiting is needed to complete
 *
 *  Sets the link speed in the AUTOC register in the MAC and restarts link.
 **/
static s32 ixgbe_setup_copper_link_speed_82598(struct ixgbe_hw *hw,
                                               ixgbe_link_speed speed,
                                               bool autoneg,
                                               bool autoneg_wait_to_complete)
{
	s32 status;

	/* Setup the PHY according to input speed */
	status = hw->phy.ops.setup_link_speed(hw, speed, autoneg,
	                                      autoneg_wait_to_complete);

	/* Set MAC to KX/KX4 autoneg, which defaults to Parallel detection */
	hw->mac.link_attach_type = (IXGBE_AUTOC_10G_KX4 | IXGBE_AUTOC_1G_KX);
	hw->mac.link_mode_select = IXGBE_AUTOC_LMS_KX4_AN;

	/* Set up MAC */
	ixgbe_setup_mac_link_82598(hw);

	return status;
}

/**
 *  ixgbe_reset_hw_82598 - Performs hardware reset
 *  @hw: pointer to hardware structure
 *
 *  Resets the hardware by resetting the transmit and receive units, masks and
 *  clears all interrupts, performing a PHY reset, and performing a link (MAC)
 *  reset.
 **/
static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw)
{
	s32 status = 0;
	u32 ctrl;
	u32 gheccr;
	u32 i;
	u32 autoc;
	u8  analog_val;

	/* Call adapter stop to disable tx/rx and clear interrupts */
	hw->mac.ops.stop_adapter(hw);

	/*
	 * Power up the Atlas Tx lanes if they are currently powered down.
	 * Atlas Tx lanes are powered down for MAC loopback tests, but
	 * they are not automatically restored on reset.
	 */
	hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, &analog_val);
	if (analog_val & IXGBE_ATLAS_PDN_TX_REG_EN) {
		/* Enable Tx Atlas so packets can be transmitted again */
		hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK,
		                             &analog_val);
		analog_val &= ~IXGBE_ATLAS_PDN_TX_REG_EN;
		hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK,
		                              analog_val);

		hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_10G,
		                             &analog_val);
		analog_val &= ~IXGBE_ATLAS_PDN_TX_10G_QL_ALL;
		hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_10G,
		                              analog_val);

		hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_1G,
		                             &analog_val);
		analog_val &= ~IXGBE_ATLAS_PDN_TX_1G_QL_ALL;
		hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_1G,
		                              analog_val);

		hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_AN,
		                             &analog_val);
		analog_val &= ~IXGBE_ATLAS_PDN_TX_AN_QL_ALL;
		hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_AN,
		                              analog_val);
	}

	/* Reset PHY */
	if (hw->phy.reset_disable == false)
		hw->phy.ops.reset(hw);

	/*
	 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
	 * access and verify no pending requests before reset
	 */
	if (ixgbe_disable_pcie_master(hw) != 0) {
		status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
		hw_dbg(hw, "PCI-E Master disable polling has failed.\n");
	}

	/*
	 * Issue global reset to the MAC.  This needs to be a SW reset.
	 * If link reset is used, it might reset the MAC when mng is using it
	 */
	ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
	IXGBE_WRITE_REG(hw, IXGBE_CTRL, (ctrl | IXGBE_CTRL_RST));
	IXGBE_WRITE_FLUSH(hw);

	/* Poll for reset bit to self-clear indicating reset is complete */
	for (i = 0; i < 10; i++) {
		udelay(1);
		ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
		if (!(ctrl & IXGBE_CTRL_RST))
			break;
	}
	if (ctrl & IXGBE_CTRL_RST) {
		status = IXGBE_ERR_RESET_FAILED;
		hw_dbg(hw, "Reset polling failed to complete.\n");
	}

	msleep(50);

	gheccr = IXGBE_READ_REG(hw, IXGBE_GHECCR);
	gheccr &= ~((1 << 21) | (1 << 18) | (1 << 9) | (1 << 6));
	IXGBE_WRITE_REG(hw, IXGBE_GHECCR, gheccr);

	/*
	 * AUTOC register which stores link settings gets cleared
	 * and reloaded from EEPROM after reset. We need to restore
	 * our stored value from init in case SW changed the attach
	 * type or speed.  If this is the first time and link settings
	 * have not been stored, store default settings from AUTOC.
	 */
	autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
	if (hw->mac.link_settings_loaded) {
		autoc &= ~(IXGBE_AUTOC_LMS_ATTACH_TYPE);
		autoc &= ~(IXGBE_AUTOC_LMS_MASK);
		autoc |= hw->mac.link_attach_type;
		autoc |= hw->mac.link_mode_select;
		IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc);
	} else {
		hw->mac.link_attach_type =
		                         (autoc & IXGBE_AUTOC_LMS_ATTACH_TYPE);
		hw->mac.link_mode_select = (autoc & IXGBE_AUTOC_LMS_MASK);
		hw->mac.link_settings_loaded = true;
	}

	/* Store the permanent mac address */
	hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);

	return status;
}

/**
 *  ixgbe_set_vmdq_82598 - Associate a VMDq set index with a rx address
 *  @hw: pointer to hardware struct
 *  @rar: receive address register index to associate with a VMDq index
 *  @vmdq: VMDq set index
 **/
s32 ixgbe_set_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
{
	u32 rar_high;

	rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar));
	rar_high &= ~IXGBE_RAH_VIND_MASK;
	rar_high |= ((vmdq << IXGBE_RAH_VIND_SHIFT) & IXGBE_RAH_VIND_MASK);
	IXGBE_WRITE_REG(hw, IXGBE_RAH(rar), rar_high);
	return 0;
}

/**
 *  ixgbe_clear_vmdq_82598 - Disassociate a VMDq set index from an rx address
 *  @hw: pointer to hardware struct
 *  @rar: receive address register index to associate with a VMDq index
 *  @vmdq: VMDq clear index (not used in 82598, but elsewhere)
 **/
static s32 ixgbe_clear_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
{
	u32 rar_high;
	u32 rar_entries = hw->mac.num_rar_entries;

	if (rar < rar_entries) {
		rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar));
		if (rar_high & IXGBE_RAH_VIND_MASK) {
			rar_high &= ~IXGBE_RAH_VIND_MASK;
			IXGBE_WRITE_REG(hw, IXGBE_RAH(rar), rar_high);
		}
	} else {
		hw_dbg(hw, "RAR index %d is out of range.\n", rar);
	}

	return 0;
}

/**
 *  ixgbe_set_vfta_82598 - Set VLAN filter table
 *  @hw: pointer to hardware structure
 *  @vlan: VLAN id to write to VLAN filter
 *  @vind: VMDq output index that maps queue to VLAN id in VFTA
 *  @vlan_on: boolean flag to turn on/off VLAN in VFTA
 *
 *  Turn on/off specified VLAN in the VLAN filter table.
 **/
s32 ixgbe_set_vfta_82598(struct ixgbe_hw *hw, u32 vlan, u32 vind,
                         bool vlan_on)
{
	u32 regindex;
	u32 bitindex;
	u32 bits;
	u32 vftabyte;

	if (vlan > 4095)
		return IXGBE_ERR_PARAM;

	/* Determine 32-bit word position in array */
	regindex = (vlan >> 5) & 0x7F;   /* upper seven bits */

	/* Determine the location of the (VMD) queue index */
	vftabyte =  ((vlan >> 3) & 0x03); /* bits (4:3) indicating byte array */
	bitindex = (vlan & 0x7) << 2;    /* lower 3 bits indicate nibble */

	/* Set the nibble for VMD queue index */
	bits = IXGBE_READ_REG(hw, IXGBE_VFTAVIND(vftabyte, regindex));
	bits &= (~(0x0F << bitindex));
	bits |= (vind << bitindex);
	IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(vftabyte, regindex), bits);

	/* Determine the location of the bit for this VLAN id */
	bitindex = vlan & 0x1F;   /* lower five bits */

	bits = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex));
	if (vlan_on)
		/* Turn on this VLAN id */
		bits |= (1 << bitindex);
	else
		/* Turn off this VLAN id */
		bits &= ~(1 << bitindex);
	IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), bits);

	return 0;
}

/**
 *  ixgbe_clear_vfta_82598 - Clear VLAN filter table
 *  @hw: pointer to hardware structure
 *
 *  Clears the VLAN filer table, and the VMDq index associated with the filter
 **/
static s32 ixgbe_clear_vfta_82598(struct ixgbe_hw *hw)
{
	u32 offset;
	u32 vlanbyte;

	for (offset = 0; offset < hw->mac.vft_size; offset++)
		IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);

	for (vlanbyte = 0; vlanbyte < 4; vlanbyte++)
		for (offset = 0; offset < hw->mac.vft_size; offset++)
			IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(vlanbyte, offset),
			                0);

	return 0;
}

/**
 *  ixgbe_blink_led_start_82598 - Blink LED based on index.
 *  @hw: pointer to hardware structure
 *  @index: led number to blink
 **/
static s32 ixgbe_blink_led_start_82598(struct ixgbe_hw *hw, u32 index)
{
	ixgbe_link_speed speed = 0;
	bool link_up = 0;
	u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
	u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);

	/*
	 * Link must be up to auto-blink the LEDs on the 82598EB MAC;
	 * force it if link is down.
	 */
	hw->mac.ops.check_link(hw, &speed, &link_up, false);

	if (!link_up) {
		autoc_reg |= IXGBE_AUTOC_FLU;
		IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
		msleep(10);
	}

	led_reg &= ~IXGBE_LED_MODE_MASK(index);
	led_reg |= IXGBE_LED_BLINK(index);
	IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
	IXGBE_WRITE_FLUSH(hw);

	return 0;
}

/**
 *  ixgbe_blink_led_stop_82598 - Stop blinking LED based on index.
 *  @hw: pointer to hardware structure
 *  @index: led number to stop blinking
 **/
static s32 ixgbe_blink_led_stop_82598(struct ixgbe_hw *hw, u32 index)
{
	u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
	u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);

	autoc_reg &= ~IXGBE_AUTOC_FLU;
	autoc_reg |= IXGBE_AUTOC_AN_RESTART;
	IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);

	led_reg &= ~IXGBE_LED_MODE_MASK(index);
	led_reg &= ~IXGBE_LED_BLINK(index);
	led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
	IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
	IXGBE_WRITE_FLUSH(hw);

	return 0;
}

/**
 *  ixgbe_read_analog_reg8_82598 - Reads 8 bit Atlas analog register
 *  @hw: pointer to hardware structure
 *  @reg: analog register to read
 *  @val: read value
 *
 *  Performs read operation to Atlas analog register specified.
 **/
s32 ixgbe_read_analog_reg8_82598(struct ixgbe_hw *hw, u32 reg, u8 *val)
{
	u32  atlas_ctl;

	IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL,
	                IXGBE_ATLASCTL_WRITE_CMD | (reg << 8));
	IXGBE_WRITE_FLUSH(hw);
	udelay(10);
	atlas_ctl = IXGBE_READ_REG(hw, IXGBE_ATLASCTL);
	*val = (u8)atlas_ctl;

	return 0;
}

/**
 *  ixgbe_write_analog_reg8_82598 - Writes 8 bit Atlas analog register
 *  @hw: pointer to hardware structure
 *  @reg: atlas register to write
 *  @val: value to write
 *
 *  Performs write operation to Atlas analog register specified.
 **/
s32 ixgbe_write_analog_reg8_82598(struct ixgbe_hw *hw, u32 reg, u8 val)
{
	u32  atlas_ctl;

	atlas_ctl = (reg << 8) | val;
	IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL, atlas_ctl);
	IXGBE_WRITE_FLUSH(hw);
	udelay(10);

	return 0;
}

/**
 *  ixgbe_get_supported_physical_layer_82598 - Returns physical layer type
 *  @hw: pointer to hardware structure
 *
 *  Determines physical layer capabilities of the current configuration.
 **/
s32 ixgbe_get_supported_physical_layer_82598(struct ixgbe_hw *hw)
{
	s32 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;

	switch (hw->device_id) {
	case IXGBE_DEV_ID_82598EB_CX4:
	case IXGBE_DEV_ID_82598_CX4_DUAL_PORT:
		physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_CX4;
		break;
	case IXGBE_DEV_ID_82598AF_DUAL_PORT:
	case IXGBE_DEV_ID_82598AF_SINGLE_PORT:
		physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_SR;
		break;
	case IXGBE_DEV_ID_82598EB_XF_LR:
		physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_LR;
		break;
	case IXGBE_DEV_ID_82598AT:
		physical_layer = (IXGBE_PHYSICAL_LAYER_10GBASE_T |
		                  IXGBE_PHYSICAL_LAYER_1000BASE_T);
		break;

	default:
		physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;
		break;
	}

	return physical_layer;
}

static struct ixgbe_mac_operations mac_ops_82598 = {
	.init_hw		= &ixgbe_init_hw_generic,
	.reset_hw		= &ixgbe_reset_hw_82598,
	.start_hw		= &ixgbe_start_hw_generic,
	.clear_hw_cntrs		= &ixgbe_clear_hw_cntrs_generic,
	.get_media_type		= &ixgbe_get_media_type_82598,
	.get_supported_physical_layer = &ixgbe_get_supported_physical_layer_82598,
	.get_mac_addr		= &ixgbe_get_mac_addr_generic,
	.stop_adapter		= &ixgbe_stop_adapter_generic,
	.read_analog_reg8	= &ixgbe_read_analog_reg8_82598,
	.write_analog_reg8	= &ixgbe_write_analog_reg8_82598,
	.setup_link		= &ixgbe_setup_mac_link_82598,
	.setup_link_speed	= &ixgbe_setup_mac_link_speed_82598,
	.check_link		= &ixgbe_check_mac_link_82598,
	.get_link_capabilities	= &ixgbe_get_link_capabilities_82598,
	.led_on			= &ixgbe_led_on_generic,
	.led_off		= &ixgbe_led_off_generic,
	.blink_led_start	= &ixgbe_blink_led_start_82598,
	.blink_led_stop		= &ixgbe_blink_led_stop_82598,
	.set_rar		= &ixgbe_set_rar_generic,
	.clear_rar		= &ixgbe_clear_rar_generic,
	.set_vmdq		= &ixgbe_set_vmdq_82598,
	.clear_vmdq		= &ixgbe_clear_vmdq_82598,
	.init_rx_addrs		= &ixgbe_init_rx_addrs_generic,
	.update_uc_addr_list	= &ixgbe_update_uc_addr_list_generic,
	.update_mc_addr_list	= &ixgbe_update_mc_addr_list_generic,
	.enable_mc		= &ixgbe_enable_mc_generic,
	.disable_mc		= &ixgbe_disable_mc_generic,
	.clear_vfta		= &ixgbe_clear_vfta_82598,
	.set_vfta		= &ixgbe_set_vfta_82598,
	.setup_fc		= &ixgbe_setup_fc_82598,
};

static struct ixgbe_eeprom_operations eeprom_ops_82598 = {
	.init_params		= &ixgbe_init_eeprom_params_generic,
	.read			= &ixgbe_read_eeprom_generic,
	.validate_checksum	= &ixgbe_validate_eeprom_checksum_generic,
	.update_checksum	= &ixgbe_update_eeprom_checksum_generic,
};

static struct ixgbe_phy_operations phy_ops_82598 = {
	.identify		= &ixgbe_identify_phy_generic,
	/* .identify_sfp	= &ixgbe_identify_sfp_module_generic, */
	.reset			= &ixgbe_reset_phy_generic,
	.read_reg		= &ixgbe_read_phy_reg_generic,
	.write_reg		= &ixgbe_write_phy_reg_generic,
	.setup_link		= &ixgbe_setup_phy_link_generic,
	.setup_link_speed	= &ixgbe_setup_phy_link_speed_generic,
};

struct ixgbe_info ixgbe_82598_info = {
	.mac			= ixgbe_mac_82598EB,
	.get_invariants		= &ixgbe_get_invariants_82598,
	.mac_ops		= &mac_ops_82598,
	.eeprom_ops		= &eeprom_ops_82598,
	.phy_ops		= &phy_ops_82598,
};