summaryrefslogtreecommitdiffstats
path: root/arch/mips/cavium-octeon/executive/cvmx-helper.c
blob: d63d20dfbfb0d0b23bd5b681e658595f7a7b76b4 (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
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
/***********************license start***************
 * Author: Cavium Networks
 *
 * Contact: support@caviumnetworks.com
 * This file is part of the OCTEON SDK
 *
 * Copyright (c) 2003-2008 Cavium Networks
 *
 * This file is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, Version 2, as
 * published by the Free Software Foundation.
 *
 * This file is distributed in the hope that it will be useful, but
 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
 * NONINFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this file; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 * or visit http://www.gnu.org/licenses/.
 *
 * This file may also be available under a different license from Cavium.
 * Contact Cavium Networks for more information
 ***********************license end**************************************/

/*
 *
 * Helper functions for common, but complicated tasks.
 *
 */
#include <asm/octeon/octeon.h>

#include <asm/octeon/cvmx-config.h>

#include <asm/octeon/cvmx-fpa.h>
#include <asm/octeon/cvmx-pip.h>
#include <asm/octeon/cvmx-pko.h>
#include <asm/octeon/cvmx-ipd.h>
#include <asm/octeon/cvmx-spi.h>
#include <asm/octeon/cvmx-helper.h>
#include <asm/octeon/cvmx-helper-board.h>

#include <asm/octeon/cvmx-pip-defs.h>
#include <asm/octeon/cvmx-smix-defs.h>
#include <asm/octeon/cvmx-asxx-defs.h>

/**
 * cvmx_override_pko_queue_priority(int ipd_port, uint64_t
 * priorities[16]) is a function pointer. It is meant to allow
 * customization of the PKO queue priorities based on the port
 * number. Users should set this pointer to a function before
 * calling any cvmx-helper operations.
 */
void (*cvmx_override_pko_queue_priority) (int pko_port,
					  uint64_t priorities[16]);

/**
 * cvmx_override_ipd_port_setup(int ipd_port) is a function
 * pointer. It is meant to allow customization of the IPD port
 * setup before packet input/output comes online. It is called
 * after cvmx-helper does the default IPD configuration, but
 * before IPD is enabled. Users should set this pointer to a
 * function before calling any cvmx-helper operations.
 */
void (*cvmx_override_ipd_port_setup) (int ipd_port);

/* Port count per interface */
static int interface_port_count[4] = { 0, 0, 0, 0 };

/* Port last configured link info index by IPD/PKO port */
static cvmx_helper_link_info_t
    port_link_info[CVMX_PIP_NUM_INPUT_PORTS];

/**
 * Return the number of interfaces the chip has. Each interface
 * may have multiple ports. Most chips support two interfaces,
 * but the CNX0XX and CNX1XX are exceptions. These only support
 * one interface.
 *
 * Returns Number of interfaces on chip
 */
int cvmx_helper_get_number_of_interfaces(void)
{
	if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN52XX))
		return 4;
	else
		return 3;
}

/**
 * Return the number of ports on an interface. Depending on the
 * chip and configuration, this can be 1-16. A value of 0
 * specifies that the interface doesn't exist or isn't usable.
 *
 * @interface: Interface to get the port count for
 *
 * Returns Number of ports on interface. Can be Zero.
 */
int cvmx_helper_ports_on_interface(int interface)
{
	return interface_port_count[interface];
}

/**
 * Get the operating mode of an interface. Depending on the Octeon
 * chip and configuration, this function returns an enumeration
 * of the type of packet I/O supported by an interface.
 *
 * @interface: Interface to probe
 *
 * Returns Mode of the interface. Unknown or unsupported interfaces return
 *	   DISABLED.
 */
cvmx_helper_interface_mode_t cvmx_helper_interface_get_mode(int interface)
{
	union cvmx_gmxx_inf_mode mode;
	if (interface == 2)
		return CVMX_HELPER_INTERFACE_MODE_NPI;

	if (interface == 3) {
		if (OCTEON_IS_MODEL(OCTEON_CN56XX)
		    || OCTEON_IS_MODEL(OCTEON_CN52XX))
			return CVMX_HELPER_INTERFACE_MODE_LOOP;
		else
			return CVMX_HELPER_INTERFACE_MODE_DISABLED;
	}

	if (interface == 0
	    && cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_CN3005_EVB_HS5
	    && cvmx_sysinfo_get()->board_rev_major == 1) {
		/*
		 * Lie about interface type of CN3005 board.  This
		 * board has a switch on port 1 like the other
		 * evaluation boards, but it is connected over RGMII
		 * instead of GMII.  Report GMII mode so that the
		 * speed is forced to 1 Gbit full duplex.  Other than
		 * some initial configuration (which does not use the
		 * output of this function) there is no difference in
		 * setup between GMII and RGMII modes.
		 */
		return CVMX_HELPER_INTERFACE_MODE_GMII;
	}

	/* Interface 1 is always disabled on CN31XX and CN30XX */
	if ((interface == 1)
	    && (OCTEON_IS_MODEL(OCTEON_CN31XX) || OCTEON_IS_MODEL(OCTEON_CN30XX)
		|| OCTEON_IS_MODEL(OCTEON_CN50XX)
		|| OCTEON_IS_MODEL(OCTEON_CN52XX)))
		return CVMX_HELPER_INTERFACE_MODE_DISABLED;

	mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface));

	if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN52XX)) {
		switch (mode.cn56xx.mode) {
		case 0:
			return CVMX_HELPER_INTERFACE_MODE_DISABLED;
		case 1:
			return CVMX_HELPER_INTERFACE_MODE_XAUI;
		case 2:
			return CVMX_HELPER_INTERFACE_MODE_SGMII;
		case 3:
			return CVMX_HELPER_INTERFACE_MODE_PICMG;
		default:
			return CVMX_HELPER_INTERFACE_MODE_DISABLED;
		}
	} else {
		if (!mode.s.en)
			return CVMX_HELPER_INTERFACE_MODE_DISABLED;

		if (mode.s.type) {
			if (OCTEON_IS_MODEL(OCTEON_CN38XX)
			    || OCTEON_IS_MODEL(OCTEON_CN58XX))
				return CVMX_HELPER_INTERFACE_MODE_SPI;
			else
				return CVMX_HELPER_INTERFACE_MODE_GMII;
		} else
			return CVMX_HELPER_INTERFACE_MODE_RGMII;
	}
}

/**
 * Configure the IPD/PIP tagging and QoS options for a specific
 * port. This function determines the POW work queue entry
 * contents for a port. The setup performed here is controlled by
 * the defines in executive-config.h.
 *
 * @ipd_port: Port to configure. This follows the IPD numbering, not the
 *		   per interface numbering
 *
 * Returns Zero on success, negative on failure
 */
static int __cvmx_helper_port_setup_ipd(int ipd_port)
{
	union cvmx_pip_prt_cfgx port_config;
	union cvmx_pip_prt_tagx tag_config;

	port_config.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(ipd_port));
	tag_config.u64 = cvmx_read_csr(CVMX_PIP_PRT_TAGX(ipd_port));

	/* Have each port go to a different POW queue */
	port_config.s.qos = ipd_port & 0x7;

	/* Process the headers and place the IP header in the work queue */
	port_config.s.mode = CVMX_HELPER_INPUT_PORT_SKIP_MODE;

	tag_config.s.ip6_src_flag = CVMX_HELPER_INPUT_TAG_IPV6_SRC_IP;
	tag_config.s.ip6_dst_flag = CVMX_HELPER_INPUT_TAG_IPV6_DST_IP;
	tag_config.s.ip6_sprt_flag = CVMX_HELPER_INPUT_TAG_IPV6_SRC_PORT;
	tag_config.s.ip6_dprt_flag = CVMX_HELPER_INPUT_TAG_IPV6_DST_PORT;
	tag_config.s.ip6_nxth_flag = CVMX_HELPER_INPUT_TAG_IPV6_NEXT_HEADER;
	tag_config.s.ip4_src_flag = CVMX_HELPER_INPUT_TAG_IPV4_SRC_IP;
	tag_config.s.ip4_dst_flag = CVMX_HELPER_INPUT_TAG_IPV4_DST_IP;
	tag_config.s.ip4_sprt_flag = CVMX_HELPER_INPUT_TAG_IPV4_SRC_PORT;
	tag_config.s.ip4_dprt_flag = CVMX_HELPER_INPUT_TAG_IPV4_DST_PORT;
	tag_config.s.ip4_pctl_flag = CVMX_HELPER_INPUT_TAG_IPV4_PROTOCOL;
	tag_config.s.inc_prt_flag = CVMX_HELPER_INPUT_TAG_INPUT_PORT;
	tag_config.s.tcp6_tag_type = CVMX_HELPER_INPUT_TAG_TYPE;
	tag_config.s.tcp4_tag_type = CVMX_HELPER_INPUT_TAG_TYPE;
	tag_config.s.ip6_tag_type = CVMX_HELPER_INPUT_TAG_TYPE;
	tag_config.s.ip4_tag_type = CVMX_HELPER_INPUT_TAG_TYPE;
	tag_config.s.non_tag_type = CVMX_HELPER_INPUT_TAG_TYPE;
	/* Put all packets in group 0. Other groups can be used by the app */
	tag_config.s.grp = 0;

	cvmx_pip_config_port(ipd_port, port_config, tag_config);

	/* Give the user a chance to override our setting for each port */
	if (cvmx_override_ipd_port_setup)
		cvmx_override_ipd_port_setup(ipd_port);

	return 0;
}

/**
 * This function sets the interface_port_count[interface] correctly,
 * without modifying any hardware configuration.  Hardware setup of
 * the ports will be performed later.
 *
 * @interface: Interface to probe
 *
 * Returns Zero on success, negative on failure
 */
int cvmx_helper_interface_enumerate(int interface)
{
	switch (cvmx_helper_interface_get_mode(interface)) {
		/* These types don't support ports to IPD/PKO */
	case CVMX_HELPER_INTERFACE_MODE_DISABLED:
	case CVMX_HELPER_INTERFACE_MODE_PCIE:
		interface_port_count[interface] = 0;
		break;
		/* XAUI is a single high speed port */
	case CVMX_HELPER_INTERFACE_MODE_XAUI:
		interface_port_count[interface] =
		    __cvmx_helper_xaui_enumerate(interface);
		break;
		/*
		 * RGMII/GMII/MII are all treated about the same. Most
		 * functions refer to these ports as RGMII.
		 */
	case CVMX_HELPER_INTERFACE_MODE_RGMII:
	case CVMX_HELPER_INTERFACE_MODE_GMII:
		interface_port_count[interface] =
		    __cvmx_helper_rgmii_enumerate(interface);
		break;
		/*
		 * SPI4 can have 1-16 ports depending on the device at
		 * the other end.
		 */
	case CVMX_HELPER_INTERFACE_MODE_SPI:
		interface_port_count[interface] =
		    __cvmx_helper_spi_enumerate(interface);
		break;
		/*
		 * SGMII can have 1-4 ports depending on how many are
		 * hooked up.
		 */
	case CVMX_HELPER_INTERFACE_MODE_SGMII:
	case CVMX_HELPER_INTERFACE_MODE_PICMG:
		interface_port_count[interface] =
		    __cvmx_helper_sgmii_enumerate(interface);
		break;
		/* PCI target Network Packet Interface */
	case CVMX_HELPER_INTERFACE_MODE_NPI:
		interface_port_count[interface] =
		    __cvmx_helper_npi_enumerate(interface);
		break;
		/*
		 * Special loopback only ports. These are not the same
		 * as other ports in loopback mode.
		 */
	case CVMX_HELPER_INTERFACE_MODE_LOOP:
		interface_port_count[interface] =
		    __cvmx_helper_loop_enumerate(interface);
		break;
	}

	interface_port_count[interface] =
	    __cvmx_helper_board_interface_probe(interface,
						interface_port_count
						[interface]);

	/* Make sure all global variables propagate to other cores */
	CVMX_SYNCWS;

	return 0;
}

/**
 * This function probes an interface to determine the actual
 * number of hardware ports connected to it. It doesn't setup the
 * ports or enable them. The main goal here is to set the global
 * interface_port_count[interface] correctly. Hardware setup of the
 * ports will be performed later.
 *
 * @interface: Interface to probe
 *
 * Returns Zero on success, negative on failure
 */
int cvmx_helper_interface_probe(int interface)
{
	cvmx_helper_interface_enumerate(interface);
	/* At this stage in the game we don't want packets to be moving yet.
	   The following probe calls should perform hardware setup
	   needed to determine port counts. Receive must still be disabled */
	switch (cvmx_helper_interface_get_mode(interface)) {
		/* These types don't support ports to IPD/PKO */
	case CVMX_HELPER_INTERFACE_MODE_DISABLED:
	case CVMX_HELPER_INTERFACE_MODE_PCIE:
		break;
		/* XAUI is a single high speed port */
	case CVMX_HELPER_INTERFACE_MODE_XAUI:
		__cvmx_helper_xaui_probe(interface);
		break;
		/*
		 * RGMII/GMII/MII are all treated about the same. Most
		 * functions refer to these ports as RGMII.
		 */
	case CVMX_HELPER_INTERFACE_MODE_RGMII:
	case CVMX_HELPER_INTERFACE_MODE_GMII:
		__cvmx_helper_rgmii_probe(interface);
		break;
		/*
		 * SPI4 can have 1-16 ports depending on the device at
		 * the other end.
		 */
	case CVMX_HELPER_INTERFACE_MODE_SPI:
		__cvmx_helper_spi_probe(interface);
		break;
		/*
		 * SGMII can have 1-4 ports depending on how many are
		 * hooked up.
		 */
	case CVMX_HELPER_INTERFACE_MODE_SGMII:
	case CVMX_HELPER_INTERFACE_MODE_PICMG:
		__cvmx_helper_sgmii_probe(interface);
		break;
		/* PCI target Network Packet Interface */
	case CVMX_HELPER_INTERFACE_MODE_NPI:
		__cvmx_helper_npi_probe(interface);
		break;
		/*
		 * Special loopback only ports. These are not the same
		 * as other ports in loopback mode.
		 */
	case CVMX_HELPER_INTERFACE_MODE_LOOP:
		__cvmx_helper_loop_probe(interface);
		break;
	}

	/* Make sure all global variables propagate to other cores */
	CVMX_SYNCWS;

	return 0;
}

/**
 * Setup the IPD/PIP for the ports on an interface. Packet
 * classification and tagging are set for every port on the
 * interface. The number of ports on the interface must already
 * have been probed.
 *
 * @interface: Interface to setup IPD/PIP for
 *
 * Returns Zero on success, negative on failure
 */
static int __cvmx_helper_interface_setup_ipd(int interface)
{
	int ipd_port = cvmx_helper_get_ipd_port(interface, 0);
	int num_ports = interface_port_count[interface];

	while (num_ports--) {
		__cvmx_helper_port_setup_ipd(ipd_port);
		ipd_port++;
	}
	return 0;
}

/**
 * Setup global setting for IPD/PIP not related to a specific
 * interface or port. This must be called before IPD is enabled.
 *
 * Returns Zero on success, negative on failure.
 */
static int __cvmx_helper_global_setup_ipd(void)
{
	/* Setup the global packet input options */
	cvmx_ipd_config(CVMX_FPA_PACKET_POOL_SIZE / 8,
			CVMX_HELPER_FIRST_MBUFF_SKIP / 8,
			CVMX_HELPER_NOT_FIRST_MBUFF_SKIP / 8,
			/* The +8 is to account for the next ptr */
			(CVMX_HELPER_FIRST_MBUFF_SKIP + 8) / 128,
			/* The +8 is to account for the next ptr */
			(CVMX_HELPER_NOT_FIRST_MBUFF_SKIP + 8) / 128,
			CVMX_FPA_WQE_POOL,
			CVMX_IPD_OPC_MODE_STT,
			CVMX_HELPER_ENABLE_BACK_PRESSURE);
	return 0;
}

/**
 * Setup the PKO for the ports on an interface. The number of
 * queues per port and the priority of each PKO output queue
 * is set here. PKO must be disabled when this function is called.
 *
 * @interface: Interface to setup PKO for
 *
 * Returns Zero on success, negative on failure
 */
static int __cvmx_helper_interface_setup_pko(int interface)
{
	/*
	 * Each packet output queue has an associated priority. The
	 * higher the priority, the more often it can send a packet. A
	 * priority of 8 means it can send in all 8 rounds of
	 * contention. We're going to make each queue one less than
	 * the last.  The vector of priorities has been extended to
	 * support CN5xxx CPUs, where up to 16 queues can be
	 * associated to a port.  To keep backward compatibility we
	 * don't change the initial 8 priorities and replicate them in
	 * the second half.  With per-core PKO queues (PKO lockless
	 * operation) all queues have the same priority.
	 */
	uint64_t priorities[16] =
	    { 8, 7, 6, 5, 4, 3, 2, 1, 8, 7, 6, 5, 4, 3, 2, 1 };

	/*
	 * Setup the IPD/PIP and PKO for the ports discovered
	 * above. Here packet classification, tagging and output
	 * priorities are set.
	 */
	int ipd_port = cvmx_helper_get_ipd_port(interface, 0);
	int num_ports = interface_port_count[interface];
	while (num_ports--) {
		/*
		 * Give the user a chance to override the per queue
		 * priorities.
		 */
		if (cvmx_override_pko_queue_priority)
			cvmx_override_pko_queue_priority(ipd_port, priorities);

		cvmx_pko_config_port(ipd_port,
				     cvmx_pko_get_base_queue_per_core(ipd_port,
								      0),
				     cvmx_pko_get_num_queues(ipd_port),
				     priorities);
		ipd_port++;
	}
	return 0;
}

/**
 * Setup global setting for PKO not related to a specific
 * interface or port. This must be called before PKO is enabled.
 *
 * Returns Zero on success, negative on failure.
 */
static int __cvmx_helper_global_setup_pko(void)
{
	/*
	 * Disable tagwait FAU timeout. This needs to be done before
	 * anyone might start packet output using tags.
	 */
	union cvmx_iob_fau_timeout fau_to;
	fau_to.u64 = 0;
	fau_to.s.tout_val = 0xfff;
	fau_to.s.tout_enb = 0;
	cvmx_write_csr(CVMX_IOB_FAU_TIMEOUT, fau_to.u64);
	return 0;
}

/**
 * Setup global backpressure setting.
 *
 * Returns Zero on success, negative on failure
 */
static int __cvmx_helper_global_setup_backpressure(void)
{
#if CVMX_HELPER_DISABLE_RGMII_BACKPRESSURE
	/* Disable backpressure if configured to do so */
	/* Disable backpressure (pause frame) generation */
	int num_interfaces = cvmx_helper_get_number_of_interfaces();
	int interface;
	for (interface = 0; interface < num_interfaces; interface++) {
		switch (cvmx_helper_interface_get_mode(interface)) {
		case CVMX_HELPER_INTERFACE_MODE_DISABLED:
		case CVMX_HELPER_INTERFACE_MODE_PCIE:
		case CVMX_HELPER_INTERFACE_MODE_NPI:
		case CVMX_HELPER_INTERFACE_MODE_LOOP:
		case CVMX_HELPER_INTERFACE_MODE_XAUI:
			break;
		case CVMX_HELPER_INTERFACE_MODE_RGMII:
		case CVMX_HELPER_INTERFACE_MODE_GMII:
		case CVMX_HELPER_INTERFACE_MODE_SPI:
		case CVMX_HELPER_INTERFACE_MODE_SGMII:
		case CVMX_HELPER_INTERFACE_MODE_PICMG:
			cvmx_gmx_set_backpressure_override(interface, 0xf);
			break;
		}
	}
#endif

	return 0;
}

/**
 * Enable packet input/output from the hardware. This function is
 * called after all internal setup is complete and IPD is enabled.
 * After this function completes, packets will be accepted from the
 * hardware ports. PKO should still be disabled to make sure packets
 * aren't sent out partially setup hardware.
 *
 * @interface: Interface to enable
 *
 * Returns Zero on success, negative on failure
 */
static int __cvmx_helper_packet_hardware_enable(int interface)
{
	int result = 0;
	switch (cvmx_helper_interface_get_mode(interface)) {
		/* These types don't support ports to IPD/PKO */
	case CVMX_HELPER_INTERFACE_MODE_DISABLED:
	case CVMX_HELPER_INTERFACE_MODE_PCIE:
		/* Nothing to do */
		break;
		/* XAUI is a single high speed port */
	case CVMX_HELPER_INTERFACE_MODE_XAUI:
		result = __cvmx_helper_xaui_enable(interface);
		break;
		/*
		 * RGMII/GMII/MII are all treated about the same. Most
		 * functions refer to these ports as RGMII
		 */
	case CVMX_HELPER_INTERFACE_MODE_RGMII:
	case CVMX_HELPER_INTERFACE_MODE_GMII:
		result = __cvmx_helper_rgmii_enable(interface);
		break;
		/*
		 * SPI4 can have 1-16 ports depending on the device at
		 * the other end
		 */
	case CVMX_HELPER_INTERFACE_MODE_SPI:
		result = __cvmx_helper_spi_enable(interface);
		break;
		/*
		 * SGMII can have 1-4 ports depending on how many are
		 * hooked up
		 */
	case CVMX_HELPER_INTERFACE_MODE_SGMII:
	case CVMX_HELPER_INTERFACE_MODE_PICMG:
		result = __cvmx_helper_sgmii_enable(interface);
		break;
		/* PCI target Network Packet Interface */
	case CVMX_HELPER_INTERFACE_MODE_NPI:
		result = __cvmx_helper_npi_enable(interface);
		break;
		/*
		 * Special loopback only ports. These are not the same
		 * as other ports in loopback mode
		 */
	case CVMX_HELPER_INTERFACE_MODE_LOOP:
		result = __cvmx_helper_loop_enable(interface);
		break;
	}
	result |= __cvmx_helper_board_hardware_enable(interface);
	return result;
}

/**
 * Function to adjust internal IPD pointer alignments
 *
 * Returns 0 on success
 *	   !0 on failure
 */
int __cvmx_helper_errata_fix_ipd_ptr_alignment(void)
{
#define FIX_IPD_FIRST_BUFF_PAYLOAD_BYTES \
     (CVMX_FPA_PACKET_POOL_SIZE-8-CVMX_HELPER_FIRST_MBUFF_SKIP)
#define FIX_IPD_NON_FIRST_BUFF_PAYLOAD_BYTES \
	(CVMX_FPA_PACKET_POOL_SIZE-8-CVMX_HELPER_NOT_FIRST_MBUFF_SKIP)
#define FIX_IPD_OUTPORT 0
	/* Ports 0-15 are interface 0, 16-31 are interface 1 */
#define INTERFACE(port) (port >> 4)
#define INDEX(port) (port & 0xf)
	uint64_t *p64;
	cvmx_pko_command_word0_t pko_command;
	union cvmx_buf_ptr g_buffer, pkt_buffer;
	cvmx_wqe_t *work;
	int size, num_segs = 0, wqe_pcnt, pkt_pcnt;
	union cvmx_gmxx_prtx_cfg gmx_cfg;
	int retry_cnt;
	int retry_loop_cnt;
	int i;
	cvmx_helper_link_info_t link_info;

	/* Save values for restore at end */
	uint64_t prtx_cfg =
	    cvmx_read_csr(CVMX_GMXX_PRTX_CFG
			  (INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)));
	uint64_t tx_ptr_en =
	    cvmx_read_csr(CVMX_ASXX_TX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)));
	uint64_t rx_ptr_en =
	    cvmx_read_csr(CVMX_ASXX_RX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)));
	uint64_t rxx_jabber =
	    cvmx_read_csr(CVMX_GMXX_RXX_JABBER
			  (INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)));
	uint64_t frame_max =
	    cvmx_read_csr(CVMX_GMXX_RXX_FRM_MAX
			  (INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)));

	/* Configure port to gig FDX as required for loopback mode */
	cvmx_helper_rgmii_internal_loopback(FIX_IPD_OUTPORT);

	/*
	 * Disable reception on all ports so if traffic is present it
	 * will not interfere.
	 */
	cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)), 0);

	cvmx_wait(100000000ull);

	for (retry_loop_cnt = 0; retry_loop_cnt < 10; retry_loop_cnt++) {
		retry_cnt = 100000;
		wqe_pcnt = cvmx_read_csr(CVMX_IPD_PTR_COUNT);
		pkt_pcnt = (wqe_pcnt >> 7) & 0x7f;
		wqe_pcnt &= 0x7f;

		num_segs = (2 + pkt_pcnt - wqe_pcnt) & 3;

		if (num_segs == 0)
			goto fix_ipd_exit;

		num_segs += 1;

		size =
		    FIX_IPD_FIRST_BUFF_PAYLOAD_BYTES +
		    ((num_segs - 1) * FIX_IPD_NON_FIRST_BUFF_PAYLOAD_BYTES) -
		    (FIX_IPD_NON_FIRST_BUFF_PAYLOAD_BYTES / 2);

		cvmx_write_csr(CVMX_ASXX_PRT_LOOP(INTERFACE(FIX_IPD_OUTPORT)),
			       1 << INDEX(FIX_IPD_OUTPORT));
		CVMX_SYNC;

		g_buffer.u64 = 0;
		g_buffer.s.addr =
		    cvmx_ptr_to_phys(cvmx_fpa_alloc(CVMX_FPA_WQE_POOL));
		if (g_buffer.s.addr == 0) {
			cvmx_dprintf("WARNING: FIX_IPD_PTR_ALIGNMENT "
				     "buffer allocation failure.\n");
			goto fix_ipd_exit;
		}

		g_buffer.s.pool = CVMX_FPA_WQE_POOL;
		g_buffer.s.size = num_segs;

		pkt_buffer.u64 = 0;
		pkt_buffer.s.addr =
		    cvmx_ptr_to_phys(cvmx_fpa_alloc(CVMX_FPA_PACKET_POOL));
		if (pkt_buffer.s.addr == 0) {
			cvmx_dprintf("WARNING: FIX_IPD_PTR_ALIGNMENT "
				     "buffer allocation failure.\n");
			goto fix_ipd_exit;
		}
		pkt_buffer.s.i = 1;
		pkt_buffer.s.pool = CVMX_FPA_PACKET_POOL;
		pkt_buffer.s.size = FIX_IPD_FIRST_BUFF_PAYLOAD_BYTES;

		p64 = (uint64_t *) cvmx_phys_to_ptr(pkt_buffer.s.addr);
		p64[0] = 0xffffffffffff0000ull;
		p64[1] = 0x08004510ull;
		p64[2] = ((uint64_t) (size - 14) << 48) | 0x5ae740004000ull;
		p64[3] = 0x3a5fc0a81073c0a8ull;

		for (i = 0; i < num_segs; i++) {
			if (i > 0)
				pkt_buffer.s.size =
				    FIX_IPD_NON_FIRST_BUFF_PAYLOAD_BYTES;

			if (i == (num_segs - 1))
				pkt_buffer.s.i = 0;

			*(uint64_t *) cvmx_phys_to_ptr(g_buffer.s.addr +
						       8 * i) = pkt_buffer.u64;
		}

		/* Build the PKO command */
		pko_command.u64 = 0;
		pko_command.s.segs = num_segs;
		pko_command.s.total_bytes = size;
		pko_command.s.dontfree = 0;
		pko_command.s.gather = 1;

		gmx_cfg.u64 =
		    cvmx_read_csr(CVMX_GMXX_PRTX_CFG
				  (INDEX(FIX_IPD_OUTPORT),
				   INTERFACE(FIX_IPD_OUTPORT)));
		gmx_cfg.s.en = 1;
		cvmx_write_csr(CVMX_GMXX_PRTX_CFG
			       (INDEX(FIX_IPD_OUTPORT),
				INTERFACE(FIX_IPD_OUTPORT)), gmx_cfg.u64);
		cvmx_write_csr(CVMX_ASXX_TX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)),
			       1 << INDEX(FIX_IPD_OUTPORT));
		cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)),
			       1 << INDEX(FIX_IPD_OUTPORT));

		cvmx_write_csr(CVMX_GMXX_RXX_JABBER
			       (INDEX(FIX_IPD_OUTPORT),
				INTERFACE(FIX_IPD_OUTPORT)), 65392 - 14 - 4);
		cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX
			       (INDEX(FIX_IPD_OUTPORT),
				INTERFACE(FIX_IPD_OUTPORT)), 65392 - 14 - 4);

		cvmx_pko_send_packet_prepare(FIX_IPD_OUTPORT,
					     cvmx_pko_get_base_queue
					     (FIX_IPD_OUTPORT),
					     CVMX_PKO_LOCK_CMD_QUEUE);
		cvmx_pko_send_packet_finish(FIX_IPD_OUTPORT,
					    cvmx_pko_get_base_queue
					    (FIX_IPD_OUTPORT), pko_command,
					    g_buffer, CVMX_PKO_LOCK_CMD_QUEUE);

		CVMX_SYNC;

		do {
			work = cvmx_pow_work_request_sync(CVMX_POW_WAIT);
			retry_cnt--;
		} while ((work == NULL) && (retry_cnt > 0));

		if (!retry_cnt)
			cvmx_dprintf("WARNING: FIX_IPD_PTR_ALIGNMENT "
				     "get_work() timeout occurred.\n");

		/* Free packet */
		if (work)
			cvmx_helper_free_packet_data(work);
	}

fix_ipd_exit:

	/* Return CSR configs to saved values */
	cvmx_write_csr(CVMX_GMXX_PRTX_CFG
		       (INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)),
		       prtx_cfg);
	cvmx_write_csr(CVMX_ASXX_TX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)),
		       tx_ptr_en);
	cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)),
		       rx_ptr_en);
	cvmx_write_csr(CVMX_GMXX_RXX_JABBER
		       (INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)),
		       rxx_jabber);
	cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX
		       (INDEX(FIX_IPD_OUTPORT), INTERFACE(FIX_IPD_OUTPORT)),
		       frame_max);
	cvmx_write_csr(CVMX_ASXX_PRT_LOOP(INTERFACE(FIX_IPD_OUTPORT)), 0);
	/* Set link to down so autonegotiation will set it up again */
	link_info.u64 = 0;
	cvmx_helper_link_set(FIX_IPD_OUTPORT, link_info);

	/*
	 * Bring the link back up as autonegotiation is not done in
	 * user applications.
	 */
	cvmx_helper_link_autoconf(FIX_IPD_OUTPORT);

	CVMX_SYNC;
	if (num_segs)
		cvmx_dprintf("WARNING: FIX_IPD_PTR_ALIGNMENT failed.\n");

	return !!num_segs;

}

/**
 * Called after all internal packet IO paths are setup. This
 * function enables IPD/PIP and begins packet input and output.
 *
 * Returns Zero on success, negative on failure
 */
int cvmx_helper_ipd_and_packet_input_enable(void)
{
	int num_interfaces;
	int interface;

	/* Enable IPD */
	cvmx_ipd_enable();

	/*
	 * Time to enable hardware ports packet input and output. Note
	 * that at this point IPD/PIP must be fully functional and PKO
	 * must be disabled
	 */
	num_interfaces = cvmx_helper_get_number_of_interfaces();
	for (interface = 0; interface < num_interfaces; interface++) {
		if (cvmx_helper_ports_on_interface(interface) > 0)
			__cvmx_helper_packet_hardware_enable(interface);
	}

	/* Finally enable PKO now that the entire path is up and running */
	cvmx_pko_enable();

	if ((OCTEON_IS_MODEL(OCTEON_CN31XX_PASS1)
	     || OCTEON_IS_MODEL(OCTEON_CN30XX_PASS1))
	    && (cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM))
		__cvmx_helper_errata_fix_ipd_ptr_alignment();
	return 0;
}

/**
 * Initialize the PIP, IPD, and PKO hardware to support
 * simple priority based queues for the ethernet ports. Each
 * port is configured with a number of priority queues based
 * on CVMX_PKO_QUEUES_PER_PORT_* where each queue is lower
 * priority than the previous.
 *
 * Returns Zero on success, non-zero on failure
 */
int cvmx_helper_initialize_packet_io_global(void)
{
	int result = 0;
	int interface;
	union cvmx_l2c_cfg l2c_cfg;
	union cvmx_smix_en smix_en;
	const int num_interfaces = cvmx_helper_get_number_of_interfaces();

	/*
	 * CN52XX pass 1: Due to a bug in 2nd order CDR, it needs to
	 * be disabled.
	 */
	if (OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_0))
		__cvmx_helper_errata_qlm_disable_2nd_order_cdr(1);

	/*
	 * Tell L2 to give the IOB statically higher priority compared
	 * to the cores. This avoids conditions where IO blocks might
	 * be starved under very high L2 loads.
	 */
	l2c_cfg.u64 = cvmx_read_csr(CVMX_L2C_CFG);
	l2c_cfg.s.lrf_arb_mode = 0;
	l2c_cfg.s.rfb_arb_mode = 0;
	cvmx_write_csr(CVMX_L2C_CFG, l2c_cfg.u64);

	/* Make sure SMI/MDIO is enabled so we can query PHYs */
	smix_en.u64 = cvmx_read_csr(CVMX_SMIX_EN(0));
	if (!smix_en.s.en) {
		smix_en.s.en = 1;
		cvmx_write_csr(CVMX_SMIX_EN(0), smix_en.u64);
	}

	/* Newer chips actually have two SMI/MDIO interfaces */
	if (!OCTEON_IS_MODEL(OCTEON_CN3XXX) &&
	    !OCTEON_IS_MODEL(OCTEON_CN58XX) &&
	    !OCTEON_IS_MODEL(OCTEON_CN50XX)) {
		smix_en.u64 = cvmx_read_csr(CVMX_SMIX_EN(1));
		if (!smix_en.s.en) {
			smix_en.s.en = 1;
			cvmx_write_csr(CVMX_SMIX_EN(1), smix_en.u64);
		}
	}

	cvmx_pko_initialize_global();
	for (interface = 0; interface < num_interfaces; interface++) {
		result |= cvmx_helper_interface_probe(interface);
		if (cvmx_helper_ports_on_interface(interface) > 0)
			cvmx_dprintf("Interface %d has %d ports (%s)\n",
				     interface,
				     cvmx_helper_ports_on_interface(interface),
				     cvmx_helper_interface_mode_to_string
				     (cvmx_helper_interface_get_mode
				      (interface)));
		result |= __cvmx_helper_interface_setup_ipd(interface);
		result |= __cvmx_helper_interface_setup_pko(interface);
	}

	result |= __cvmx_helper_global_setup_ipd();
	result |= __cvmx_helper_global_setup_pko();

	/* Enable any flow control and backpressure */
	result |= __cvmx_helper_global_setup_backpressure();

#if CVMX_HELPER_ENABLE_IPD
	result |= cvmx_helper_ipd_and_packet_input_enable();
#endif
	return result;
}

/**
 * Does core local initialization for packet io
 *
 * Returns Zero on success, non-zero on failure
 */
int cvmx_helper_initialize_packet_io_local(void)
{
	return cvmx_pko_initialize_local();
}

/**
 * Auto configure an IPD/PKO port link state and speed. This
 * function basically does the equivalent of:
 * cvmx_helper_link_set(ipd_port, cvmx_helper_link_get(ipd_port));
 *
 * @ipd_port: IPD/PKO port to auto configure
 *
 * Returns Link state after configure
 */
cvmx_helper_link_info_t cvmx_helper_link_autoconf(int ipd_port)
{
	cvmx_helper_link_info_t link_info;
	int interface = cvmx_helper_get_interface_num(ipd_port);
	int index = cvmx_helper_get_interface_index_num(ipd_port);

	if (index >= cvmx_helper_ports_on_interface(interface)) {
		link_info.u64 = 0;
		return link_info;
	}

	link_info = cvmx_helper_link_get(ipd_port);
	if (link_info.u64 == port_link_info[ipd_port].u64)
		return link_info;

	/* If we fail to set the link speed, port_link_info will not change */
	cvmx_helper_link_set(ipd_port, link_info);

	/*
	 * port_link_info should be the current value, which will be
	 * different than expect if cvmx_helper_link_set() failed.
	 */
	return port_link_info[ipd_port];
}

/**
 * Return the link state of an IPD/PKO port as returned by
 * auto negotiation. The result of this function may not match
 * Octeon's link config if auto negotiation has changed since
 * the last call to cvmx_helper_link_set().
 *
 * @ipd_port: IPD/PKO port to query
 *
 * Returns Link state
 */
cvmx_helper_link_info_t cvmx_helper_link_get(int ipd_port)
{
	cvmx_helper_link_info_t result;
	int interface = cvmx_helper_get_interface_num(ipd_port);
	int index = cvmx_helper_get_interface_index_num(ipd_port);

	/* The default result will be a down link unless the code below
	   changes it */
	result.u64 = 0;

	if (index >= cvmx_helper_ports_on_interface(interface))
		return result;

	switch (cvmx_helper_interface_get_mode(interface)) {
	case CVMX_HELPER_INTERFACE_MODE_DISABLED:
	case CVMX_HELPER_INTERFACE_MODE_PCIE:
		/* Network links are not supported */
		break;
	case CVMX_HELPER_INTERFACE_MODE_XAUI:
		result = __cvmx_helper_xaui_link_get(ipd_port);
		break;
	case CVMX_HELPER_INTERFACE_MODE_GMII:
		if (index == 0)
			result = __cvmx_helper_rgmii_link_get(ipd_port);
		else {
			result.s.full_duplex = 1;
			result.s.link_up = 1;
			result.s.speed = 1000;
		}
		break;
	case CVMX_HELPER_INTERFACE_MODE_RGMII:
		result = __cvmx_helper_rgmii_link_get(ipd_port);
		break;
	case CVMX_HELPER_INTERFACE_MODE_SPI:
		result = __cvmx_helper_spi_link_get(ipd_port);
		break;
	case CVMX_HELPER_INTERFACE_MODE_SGMII:
	case CVMX_HELPER_INTERFACE_MODE_PICMG:
		result = __cvmx_helper_sgmii_link_get(ipd_port);
		break;
	case CVMX_HELPER_INTERFACE_MODE_NPI:
	case CVMX_HELPER_INTERFACE_MODE_LOOP:
		/* Network links are not supported */
		break;
	}
	return result;
}

/**
 * Configure an IPD/PKO port for the specified link state. This
 * function does not influence auto negotiation at the PHY level.
 * The passed link state must always match the link state returned
 * by cvmx_helper_link_get(). It is normally best to use
 * cvmx_helper_link_autoconf() instead.
 *
 * @ipd_port:  IPD/PKO port to configure
 * @link_info: The new link state
 *
 * Returns Zero on success, negative on failure
 */
int cvmx_helper_link_set(int ipd_port, cvmx_helper_link_info_t link_info)
{
	int result = -1;
	int interface = cvmx_helper_get_interface_num(ipd_port);
	int index = cvmx_helper_get_interface_index_num(ipd_port);

	if (index >= cvmx_helper_ports_on_interface(interface))
		return -1;

	switch (cvmx_helper_interface_get_mode(interface)) {
	case CVMX_HELPER_INTERFACE_MODE_DISABLED:
	case CVMX_HELPER_INTERFACE_MODE_PCIE:
		break;
	case CVMX_HELPER_INTERFACE_MODE_XAUI:
		result = __cvmx_helper_xaui_link_set(ipd_port, link_info);
		break;
		/*
		 * RGMII/GMII/MII are all treated about the same. Most
		 * functions refer to these ports as RGMII.
		 */
	case CVMX_HELPER_INTERFACE_MODE_RGMII:
	case CVMX_HELPER_INTERFACE_MODE_GMII:
		result = __cvmx_helper_rgmii_link_set(ipd_port, link_info);
		break;
	case CVMX_HELPER_INTERFACE_MODE_SPI:
		result = __cvmx_helper_spi_link_set(ipd_port, link_info);
		break;
	case CVMX_HELPER_INTERFACE_MODE_SGMII:
	case CVMX_HELPER_INTERFACE_MODE_PICMG:
		result = __cvmx_helper_sgmii_link_set(ipd_port, link_info);
		break;
	case CVMX_HELPER_INTERFACE_MODE_NPI:
	case CVMX_HELPER_INTERFACE_MODE_LOOP:
		break;
	}
	/* Set the port_link_info here so that the link status is updated
	   no matter how cvmx_helper_link_set is called. We don't change
	   the value if link_set failed */
	if (result == 0)
		port_link_info[ipd_port].u64 = link_info.u64;
	return result;
}

/**
 * Configure a port for internal and/or external loopback. Internal loopback
 * causes packets sent by the port to be received by Octeon. External loopback
 * causes packets received from the wire to sent out again.
 *
 * @ipd_port: IPD/PKO port to loopback.
 * @enable_internal:
 *		   Non zero if you want internal loopback
 * @enable_external:
 *		   Non zero if you want external loopback
 *
 * Returns Zero on success, negative on failure.
 */
int cvmx_helper_configure_loopback(int ipd_port, int enable_internal,
				   int enable_external)
{
	int result = -1;
	int interface = cvmx_helper_get_interface_num(ipd_port);
	int index = cvmx_helper_get_interface_index_num(ipd_port);

	if (index >= cvmx_helper_ports_on_interface(interface))
		return -1;

	switch (cvmx_helper_interface_get_mode(interface)) {
	case CVMX_HELPER_INTERFACE_MODE_DISABLED:
	case CVMX_HELPER_INTERFACE_MODE_PCIE:
	case CVMX_HELPER_INTERFACE_MODE_SPI:
	case CVMX_HELPER_INTERFACE_MODE_NPI:
	case CVMX_HELPER_INTERFACE_MODE_LOOP:
		break;
	case CVMX_HELPER_INTERFACE_MODE_XAUI:
		result =
		    __cvmx_helper_xaui_configure_loopback(ipd_port,
							  enable_internal,
							  enable_external);
		break;
	case CVMX_HELPER_INTERFACE_MODE_RGMII:
	case CVMX_HELPER_INTERFACE_MODE_GMII:
		result =
		    __cvmx_helper_rgmii_configure_loopback(ipd_port,
							   enable_internal,
							   enable_external);
		break;
	case CVMX_HELPER_INTERFACE_MODE_SGMII:
	case CVMX_HELPER_INTERFACE_MODE_PICMG:
		result =
		    __cvmx_helper_sgmii_configure_loopback(ipd_port,
							   enable_internal,
							   enable_external);
		break;
	}
	return result;
}