summaryrefslogtreecommitdiff
path: root/arch/x86/events/intel/p4.c
blob: eb0533558c2b705957a30704218b983eda65e61e (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
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
/*
 * Netburst Performance Events (P4, old Xeon)
 *
 *  Copyright (C) 2010 Parallels, Inc., Cyrill Gorcunov <gorcunov@openvz.org>
 *  Copyright (C) 2010 Intel Corporation, Lin Ming <ming.m.lin@intel.com>
 *
 *  For licencing details see kernel-base/COPYING
 */

#include <linux/perf_event.h>

#include <asm/perf_event_p4.h>
#include <asm/hardirq.h>
#include <asm/apic.h>

#include "../perf_event.h"

#define P4_CNTR_LIMIT 3
/*
 * array indices: 0,1 - HT threads, used with HT enabled cpu
 */
struct p4_event_bind {
	unsigned int opcode;			/* Event code and ESCR selector */
	unsigned int escr_msr[2];		/* ESCR MSR for this event */
	unsigned int escr_emask;		/* valid ESCR EventMask bits */
	unsigned int shared;			/* event is shared across threads */
	char cntr[2][P4_CNTR_LIMIT];		/* counter index (offset), -1 on abscence */
};

struct p4_pebs_bind {
	unsigned int metric_pebs;
	unsigned int metric_vert;
};

/* it sets P4_PEBS_ENABLE_UOP_TAG as well */
#define P4_GEN_PEBS_BIND(name, pebs, vert)			\
	[P4_PEBS_METRIC__##name] = {				\
		.metric_pebs = pebs | P4_PEBS_ENABLE_UOP_TAG,	\
		.metric_vert = vert,				\
	}

/*
 * note we have P4_PEBS_ENABLE_UOP_TAG always set here
 *
 * it's needed for mapping P4_PEBS_CONFIG_METRIC_MASK bits of
 * event configuration to find out which values are to be
 * written into MSR_IA32_PEBS_ENABLE and MSR_P4_PEBS_MATRIX_VERT
 * resgisters
 */
static struct p4_pebs_bind p4_pebs_bind_map[] = {
	P4_GEN_PEBS_BIND(1stl_cache_load_miss_retired,	0x0000001, 0x0000001),
	P4_GEN_PEBS_BIND(2ndl_cache_load_miss_retired,	0x0000002, 0x0000001),
	P4_GEN_PEBS_BIND(dtlb_load_miss_retired,	0x0000004, 0x0000001),
	P4_GEN_PEBS_BIND(dtlb_store_miss_retired,	0x0000004, 0x0000002),
	P4_GEN_PEBS_BIND(dtlb_all_miss_retired,		0x0000004, 0x0000003),
	P4_GEN_PEBS_BIND(tagged_mispred_branch,		0x0018000, 0x0000010),
	P4_GEN_PEBS_BIND(mob_load_replay_retired,	0x0000200, 0x0000001),
	P4_GEN_PEBS_BIND(split_load_retired,		0x0000400, 0x0000001),
	P4_GEN_PEBS_BIND(split_store_retired,		0x0000400, 0x0000002),
};

/*
 * Note that we don't use CCCR1 here, there is an
 * exception for P4_BSQ_ALLOCATION but we just have
 * no workaround
 *
 * consider this binding as resources which particular
 * event may borrow, it doesn't contain EventMask,
 * Tags and friends -- they are left to a caller
 */
static struct p4_event_bind p4_event_bind_map[] = {
	[P4_EVENT_TC_DELIVER_MODE] = {
		.opcode		= P4_OPCODE(P4_EVENT_TC_DELIVER_MODE),
		.escr_msr	= { MSR_P4_TC_ESCR0, MSR_P4_TC_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, DD)			|
			P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, DB)			|
			P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, DI)			|
			P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, BD)			|
			P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, BB)			|
			P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, BI)			|
			P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, ID),
		.shared		= 1,
		.cntr		= { {4, 5, -1}, {6, 7, -1} },
	},
	[P4_EVENT_BPU_FETCH_REQUEST] = {
		.opcode		= P4_OPCODE(P4_EVENT_BPU_FETCH_REQUEST),
		.escr_msr	= { MSR_P4_BPU_ESCR0, MSR_P4_BPU_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_BPU_FETCH_REQUEST, TCMISS),
		.cntr		= { {0, -1, -1}, {2, -1, -1} },
	},
	[P4_EVENT_ITLB_REFERENCE] = {
		.opcode		= P4_OPCODE(P4_EVENT_ITLB_REFERENCE),
		.escr_msr	= { MSR_P4_ITLB_ESCR0, MSR_P4_ITLB_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_ITLB_REFERENCE, HIT)			|
			P4_ESCR_EMASK_BIT(P4_EVENT_ITLB_REFERENCE, MISS)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_ITLB_REFERENCE, HIT_UK),
		.cntr		= { {0, -1, -1}, {2, -1, -1} },
	},
	[P4_EVENT_MEMORY_CANCEL] = {
		.opcode		= P4_OPCODE(P4_EVENT_MEMORY_CANCEL),
		.escr_msr	= { MSR_P4_DAC_ESCR0, MSR_P4_DAC_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_CANCEL, ST_RB_FULL)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_CANCEL, 64K_CONF),
		.cntr		= { {8, 9, -1}, {10, 11, -1} },
	},
	[P4_EVENT_MEMORY_COMPLETE] = {
		.opcode		= P4_OPCODE(P4_EVENT_MEMORY_COMPLETE),
		.escr_msr	= { MSR_P4_SAAT_ESCR0 , MSR_P4_SAAT_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_COMPLETE, LSC)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_MEMORY_COMPLETE, SSC),
		.cntr		= { {8, 9, -1}, {10, 11, -1} },
	},
	[P4_EVENT_LOAD_PORT_REPLAY] = {
		.opcode		= P4_OPCODE(P4_EVENT_LOAD_PORT_REPLAY),
		.escr_msr	= { MSR_P4_SAAT_ESCR0, MSR_P4_SAAT_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_LOAD_PORT_REPLAY, SPLIT_LD),
		.cntr		= { {8, 9, -1}, {10, 11, -1} },
	},
	[P4_EVENT_STORE_PORT_REPLAY] = {
		.opcode		= P4_OPCODE(P4_EVENT_STORE_PORT_REPLAY),
		.escr_msr	= { MSR_P4_SAAT_ESCR0 ,  MSR_P4_SAAT_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_STORE_PORT_REPLAY, SPLIT_ST),
		.cntr		= { {8, 9, -1}, {10, 11, -1} },
	},
	[P4_EVENT_MOB_LOAD_REPLAY] = {
		.opcode		= P4_OPCODE(P4_EVENT_MOB_LOAD_REPLAY),
		.escr_msr	= { MSR_P4_MOB_ESCR0, MSR_P4_MOB_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, NO_STA)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, NO_STD)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, PARTIAL_DATA)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_MOB_LOAD_REPLAY, UNALGN_ADDR),
		.cntr		= { {0, -1, -1}, {2, -1, -1} },
	},
	[P4_EVENT_PAGE_WALK_TYPE] = {
		.opcode		= P4_OPCODE(P4_EVENT_PAGE_WALK_TYPE),
		.escr_msr	= { MSR_P4_PMH_ESCR0, MSR_P4_PMH_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_PAGE_WALK_TYPE, DTMISS)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_PAGE_WALK_TYPE, ITMISS),
		.shared		= 1,
		.cntr		= { {0, -1, -1}, {2, -1, -1} },
	},
	[P4_EVENT_BSQ_CACHE_REFERENCE] = {
		.opcode		= P4_OPCODE(P4_EVENT_BSQ_CACHE_REFERENCE),
		.escr_msr	= { MSR_P4_BSU_ESCR0, MSR_P4_BSU_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITS)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITM)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITS)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITM)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_MISS)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_MISS)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, WR_2ndL_MISS),
		.cntr		= { {0, -1, -1}, {2, -1, -1} },
	},
	[P4_EVENT_IOQ_ALLOCATION] = {
		.opcode		= P4_OPCODE(P4_EVENT_IOQ_ALLOCATION),
		.escr_msr	= { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, DEFAULT)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, ALL_READ)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, ALL_WRITE)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_UC)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WC)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WT)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WP)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, MEM_WB)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, OWN)			|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, OTHER)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ALLOCATION, PREFETCH),
		.cntr		= { {0, -1, -1}, {2, -1, -1} },
	},
	[P4_EVENT_IOQ_ACTIVE_ENTRIES] = {	/* shared ESCR */
		.opcode		= P4_OPCODE(P4_EVENT_IOQ_ACTIVE_ENTRIES),
		.escr_msr	= { MSR_P4_FSB_ESCR1,  MSR_P4_FSB_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, DEFAULT)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, ALL_READ)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, ALL_WRITE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_UC)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WC)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WT)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WP)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WB)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, OWN)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, OTHER)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_IOQ_ACTIVE_ENTRIES, PREFETCH),
		.cntr		= { {2, -1, -1}, {3, -1, -1} },
	},
	[P4_EVENT_FSB_DATA_ACTIVITY] = {
		.opcode		= P4_OPCODE(P4_EVENT_FSB_DATA_ACTIVITY),
		.escr_msr	= { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_DRV)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_OWN)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_OTHER)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_DRV)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_OWN)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_OTHER),
		.shared		= 1,
		.cntr		= { {0, -1, -1}, {2, -1, -1} },
	},
	[P4_EVENT_BSQ_ALLOCATION] = {		/* shared ESCR, broken CCCR1 */
		.opcode		= P4_OPCODE(P4_EVENT_BSQ_ALLOCATION),
		.escr_msr	= { MSR_P4_BSU_ESCR0, MSR_P4_BSU_ESCR0 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_TYPE0)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_TYPE1)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_LEN0)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_LEN1)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_IO_TYPE)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_LOCK_TYPE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_CACHE_TYPE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_SPLIT_TYPE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_DEM_TYPE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, REQ_ORD_TYPE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE0)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE1)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE2),
		.cntr		= { {0, -1, -1}, {1, -1, -1} },
	},
	[P4_EVENT_BSQ_ACTIVE_ENTRIES] = {	/* shared ESCR */
		.opcode		= P4_OPCODE(P4_EVENT_BSQ_ACTIVE_ENTRIES),
		.escr_msr	= { MSR_P4_BSU_ESCR1 , MSR_P4_BSU_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_TYPE0)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_TYPE1)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LEN0)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LEN1)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_IO_TYPE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LOCK_TYPE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_CACHE_TYPE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_SPLIT_TYPE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_DEM_TYPE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_ORD_TYPE)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE0)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE1)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE2),
		.cntr		= { {2, -1, -1}, {3, -1, -1} },
	},
	[P4_EVENT_SSE_INPUT_ASSIST] = {
		.opcode		= P4_OPCODE(P4_EVENT_SSE_INPUT_ASSIST),
		.escr_msr	= { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_SSE_INPUT_ASSIST, ALL),
		.shared		= 1,
		.cntr		= { {8, 9, -1}, {10, 11, -1} },
	},
	[P4_EVENT_PACKED_SP_UOP] = {
		.opcode		= P4_OPCODE(P4_EVENT_PACKED_SP_UOP),
		.escr_msr	= { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_PACKED_SP_UOP, ALL),
		.shared		= 1,
		.cntr		= { {8, 9, -1}, {10, 11, -1} },
	},
	[P4_EVENT_PACKED_DP_UOP] = {
		.opcode		= P4_OPCODE(P4_EVENT_PACKED_DP_UOP),
		.escr_msr	= { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_PACKED_DP_UOP, ALL),
		.shared		= 1,
		.cntr		= { {8, 9, -1}, {10, 11, -1} },
	},
	[P4_EVENT_SCALAR_SP_UOP] = {
		.opcode		= P4_OPCODE(P4_EVENT_SCALAR_SP_UOP),
		.escr_msr	= { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_SCALAR_SP_UOP, ALL),
		.shared		= 1,
		.cntr		= { {8, 9, -1}, {10, 11, -1} },
	},
	[P4_EVENT_SCALAR_DP_UOP] = {
		.opcode		= P4_OPCODE(P4_EVENT_SCALAR_DP_UOP),
		.escr_msr	= { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_SCALAR_DP_UOP, ALL),
		.shared		= 1,
		.cntr		= { {8, 9, -1}, {10, 11, -1} },
	},
	[P4_EVENT_64BIT_MMX_UOP] = {
		.opcode		= P4_OPCODE(P4_EVENT_64BIT_MMX_UOP),
		.escr_msr	= { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_64BIT_MMX_UOP, ALL),
		.shared		= 1,
		.cntr		= { {8, 9, -1}, {10, 11, -1} },
	},
	[P4_EVENT_128BIT_MMX_UOP] = {
		.opcode		= P4_OPCODE(P4_EVENT_128BIT_MMX_UOP),
		.escr_msr	= { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_128BIT_MMX_UOP, ALL),
		.shared		= 1,
		.cntr		= { {8, 9, -1}, {10, 11, -1} },
	},
	[P4_EVENT_X87_FP_UOP] = {
		.opcode		= P4_OPCODE(P4_EVENT_X87_FP_UOP),
		.escr_msr	= { MSR_P4_FIRM_ESCR0, MSR_P4_FIRM_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_X87_FP_UOP, ALL),
		.shared		= 1,
		.cntr		= { {8, 9, -1}, {10, 11, -1} },
	},
	[P4_EVENT_TC_MISC] = {
		.opcode		= P4_OPCODE(P4_EVENT_TC_MISC),
		.escr_msr	= { MSR_P4_TC_ESCR0, MSR_P4_TC_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_TC_MISC, FLUSH),
		.cntr		= { {4, 5, -1}, {6, 7, -1} },
	},
	[P4_EVENT_GLOBAL_POWER_EVENTS] = {
		.opcode		= P4_OPCODE(P4_EVENT_GLOBAL_POWER_EVENTS),
		.escr_msr	= { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_GLOBAL_POWER_EVENTS, RUNNING),
		.cntr		= { {0, -1, -1}, {2, -1, -1} },
	},
	[P4_EVENT_TC_MS_XFER] = {
		.opcode		= P4_OPCODE(P4_EVENT_TC_MS_XFER),
		.escr_msr	= { MSR_P4_MS_ESCR0, MSR_P4_MS_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_TC_MS_XFER, CISC),
		.cntr		= { {4, 5, -1}, {6, 7, -1} },
	},
	[P4_EVENT_UOP_QUEUE_WRITES] = {
		.opcode		= P4_OPCODE(P4_EVENT_UOP_QUEUE_WRITES),
		.escr_msr	= { MSR_P4_MS_ESCR0, MSR_P4_MS_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_UOP_QUEUE_WRITES, FROM_TC_BUILD)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_UOP_QUEUE_WRITES, FROM_TC_DELIVER)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_UOP_QUEUE_WRITES, FROM_ROM),
		.cntr		= { {4, 5, -1}, {6, 7, -1} },
	},
	[P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE] = {
		.opcode		= P4_OPCODE(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE),
		.escr_msr	= { MSR_P4_TBPU_ESCR0 , MSR_P4_TBPU_ESCR0 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, CONDITIONAL)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, CALL)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, RETURN)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, INDIRECT),
		.cntr		= { {4, 5, -1}, {6, 7, -1} },
	},
	[P4_EVENT_RETIRED_BRANCH_TYPE] = {
		.opcode		= P4_OPCODE(P4_EVENT_RETIRED_BRANCH_TYPE),
		.escr_msr	= { MSR_P4_TBPU_ESCR0 , MSR_P4_TBPU_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CONDITIONAL)	|
			P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CALL)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, RETURN)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, INDIRECT),
		.cntr		= { {4, 5, -1}, {6, 7, -1} },
	},
	[P4_EVENT_RESOURCE_STALL] = {
		.opcode		= P4_OPCODE(P4_EVENT_RESOURCE_STALL),
		.escr_msr	= { MSR_P4_ALF_ESCR0, MSR_P4_ALF_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_RESOURCE_STALL, SBFULL),
		.cntr		= { {12, 13, 16}, {14, 15, 17} },
	},
	[P4_EVENT_WC_BUFFER] = {
		.opcode		= P4_OPCODE(P4_EVENT_WC_BUFFER),
		.escr_msr	= { MSR_P4_DAC_ESCR0, MSR_P4_DAC_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_WC_BUFFER, WCB_EVICTS)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_WC_BUFFER, WCB_FULL_EVICTS),
		.shared		= 1,
		.cntr		= { {8, 9, -1}, {10, 11, -1} },
	},
	[P4_EVENT_B2B_CYCLES] = {
		.opcode		= P4_OPCODE(P4_EVENT_B2B_CYCLES),
		.escr_msr	= { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
		.escr_emask	= 0,
		.cntr		= { {0, -1, -1}, {2, -1, -1} },
	},
	[P4_EVENT_BNR] = {
		.opcode		= P4_OPCODE(P4_EVENT_BNR),
		.escr_msr	= { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
		.escr_emask	= 0,
		.cntr		= { {0, -1, -1}, {2, -1, -1} },
	},
	[P4_EVENT_SNOOP] = {
		.opcode		= P4_OPCODE(P4_EVENT_SNOOP),
		.escr_msr	= { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
		.escr_emask	= 0,
		.cntr		= { {0, -1, -1}, {2, -1, -1} },
	},
	[P4_EVENT_RESPONSE] = {
		.opcode		= P4_OPCODE(P4_EVENT_RESPONSE),
		.escr_msr	= { MSR_P4_FSB_ESCR0, MSR_P4_FSB_ESCR1 },
		.escr_emask	= 0,
		.cntr		= { {0, -1, -1}, {2, -1, -1} },
	},
	[P4_EVENT_FRONT_END_EVENT] = {
		.opcode		= P4_OPCODE(P4_EVENT_FRONT_END_EVENT),
		.escr_msr	= { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_FRONT_END_EVENT, NBOGUS)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_FRONT_END_EVENT, BOGUS),
		.cntr		= { {12, 13, 16}, {14, 15, 17} },
	},
	[P4_EVENT_EXECUTION_EVENT] = {
		.opcode		= P4_OPCODE(P4_EVENT_EXECUTION_EVENT),
		.escr_msr	= { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS0)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS1)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS2)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS3)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS0)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS1)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS2)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS3),
		.cntr		= { {12, 13, 16}, {14, 15, 17} },
	},
	[P4_EVENT_REPLAY_EVENT] = {
		.opcode		= P4_OPCODE(P4_EVENT_REPLAY_EVENT),
		.escr_msr	= { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_REPLAY_EVENT, NBOGUS)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_REPLAY_EVENT, BOGUS),
		.cntr		= { {12, 13, 16}, {14, 15, 17} },
	},
	[P4_EVENT_INSTR_RETIRED] = {
		.opcode		= P4_OPCODE(P4_EVENT_INSTR_RETIRED),
		.escr_msr	= { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, NBOGUSNTAG)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, NBOGUSTAG)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, BOGUSNTAG)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, BOGUSTAG),
		.cntr		= { {12, 13, 16}, {14, 15, 17} },
	},
	[P4_EVENT_UOPS_RETIRED] = {
		.opcode		= P4_OPCODE(P4_EVENT_UOPS_RETIRED),
		.escr_msr	= { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_UOPS_RETIRED, NBOGUS)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_UOPS_RETIRED, BOGUS),
		.cntr		= { {12, 13, 16}, {14, 15, 17} },
	},
	[P4_EVENT_UOP_TYPE] = {
		.opcode		= P4_OPCODE(P4_EVENT_UOP_TYPE),
		.escr_msr	= { MSR_P4_RAT_ESCR0, MSR_P4_RAT_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_UOP_TYPE, TAGLOADS)			|
			P4_ESCR_EMASK_BIT(P4_EVENT_UOP_TYPE, TAGSTORES),
		.cntr		= { {12, 13, 16}, {14, 15, 17} },
	},
	[P4_EVENT_BRANCH_RETIRED] = {
		.opcode		= P4_OPCODE(P4_EVENT_BRANCH_RETIRED),
		.escr_msr	= { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMNP)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMNM)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMTP)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_BRANCH_RETIRED, MMTM),
		.cntr		= { {12, 13, 16}, {14, 15, 17} },
	},
	[P4_EVENT_MISPRED_BRANCH_RETIRED] = {
		.opcode		= P4_OPCODE(P4_EVENT_MISPRED_BRANCH_RETIRED),
		.escr_msr	= { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_MISPRED_BRANCH_RETIRED, NBOGUS),
		.cntr		= { {12, 13, 16}, {14, 15, 17} },
	},
	[P4_EVENT_X87_ASSIST] = {
		.opcode		= P4_OPCODE(P4_EVENT_X87_ASSIST),
		.escr_msr	= { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, FPSU)			|
			P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, FPSO)			|
			P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, POAO)			|
			P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, POAU)			|
			P4_ESCR_EMASK_BIT(P4_EVENT_X87_ASSIST, PREA),
		.cntr		= { {12, 13, 16}, {14, 15, 17} },
	},
	[P4_EVENT_MACHINE_CLEAR] = {
		.opcode		= P4_OPCODE(P4_EVENT_MACHINE_CLEAR),
		.escr_msr	= { MSR_P4_CRU_ESCR2, MSR_P4_CRU_ESCR3 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_MACHINE_CLEAR, CLEAR)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_MACHINE_CLEAR, MOCLEAR)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_MACHINE_CLEAR, SMCLEAR),
		.cntr		= { {12, 13, 16}, {14, 15, 17} },
	},
	[P4_EVENT_INSTR_COMPLETED] = {
		.opcode		= P4_OPCODE(P4_EVENT_INSTR_COMPLETED),
		.escr_msr	= { MSR_P4_CRU_ESCR0, MSR_P4_CRU_ESCR1 },
		.escr_emask	=
			P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_COMPLETED, NBOGUS)		|
			P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_COMPLETED, BOGUS),
		.cntr		= { {12, 13, 16}, {14, 15, 17} },
	},
};

#define P4_GEN_CACHE_EVENT(event, bit, metric)				  \
	p4_config_pack_escr(P4_ESCR_EVENT(event)			| \
			    P4_ESCR_EMASK_BIT(event, bit))		| \
	p4_config_pack_cccr(metric					| \
			    P4_CCCR_ESEL(P4_OPCODE_ESEL(P4_OPCODE(event))))

static __initconst const u64 p4_hw_cache_event_ids
				[PERF_COUNT_HW_CACHE_MAX]
				[PERF_COUNT_HW_CACHE_OP_MAX]
				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
 [ C(L1D ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = P4_GEN_CACHE_EVENT(P4_EVENT_REPLAY_EVENT, NBOGUS,
						P4_PEBS_METRIC__1stl_cache_load_miss_retired),
	},
 },
 [ C(LL  ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = P4_GEN_CACHE_EVENT(P4_EVENT_REPLAY_EVENT, NBOGUS,
						P4_PEBS_METRIC__2ndl_cache_load_miss_retired),
	},
},
 [ C(DTLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = P4_GEN_CACHE_EVENT(P4_EVENT_REPLAY_EVENT, NBOGUS,
						P4_PEBS_METRIC__dtlb_load_miss_retired),
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = P4_GEN_CACHE_EVENT(P4_EVENT_REPLAY_EVENT, NBOGUS,
						P4_PEBS_METRIC__dtlb_store_miss_retired),
	},
 },
 [ C(ITLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = P4_GEN_CACHE_EVENT(P4_EVENT_ITLB_REFERENCE, HIT,
						P4_PEBS_METRIC__none),
		[ C(RESULT_MISS)   ] = P4_GEN_CACHE_EVENT(P4_EVENT_ITLB_REFERENCE, MISS,
						P4_PEBS_METRIC__none),
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
 [ C(NODE) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
};

/*
 * Because of Netburst being quite restricted in how many
 * identical events may run simultaneously, we introduce event aliases,
 * ie the different events which have the same functionality but
 * utilize non-intersected resources (ESCR/CCCR/counter registers).
 *
 * This allow us to relax restrictions a bit and run two or more
 * identical events together.
 *
 * Never set any custom internal bits such as P4_CONFIG_HT,
 * P4_CONFIG_ALIASABLE or bits for P4_PEBS_METRIC, they are
 * either up to date automatically or not applicable at all.
 */
struct p4_event_alias {
	u64 original;
	u64 alternative;
} p4_event_aliases[] = {
	{
		/*
		 * Non-halted cycles can be substituted with non-sleeping cycles (see
		 * Intel SDM Vol3b for details). We need this alias to be able
		 * to run nmi-watchdog and 'perf top' (or any other user space tool
		 * which is interested in running PERF_COUNT_HW_CPU_CYCLES)
		 * simultaneously.
		 */
	.original	=
		p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_GLOBAL_POWER_EVENTS)		|
				    P4_ESCR_EMASK_BIT(P4_EVENT_GLOBAL_POWER_EVENTS, RUNNING)),
	.alternative	=
		p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_EXECUTION_EVENT)		|
				    P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS0)|
				    P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS1)|
				    P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS2)|
				    P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, NBOGUS3)|
				    P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS0)	|
				    P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS1)	|
				    P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS2)	|
				    P4_ESCR_EMASK_BIT(P4_EVENT_EXECUTION_EVENT, BOGUS3))|
		p4_config_pack_cccr(P4_CCCR_THRESHOLD(15) | P4_CCCR_COMPLEMENT		|
				    P4_CCCR_COMPARE),
	},
};

static u64 p4_get_alias_event(u64 config)
{
	u64 config_match;
	int i;

	/*
	 * Only event with special mark is allowed,
	 * we're to be sure it didn't come as malformed
	 * RAW event.
	 */
	if (!(config & P4_CONFIG_ALIASABLE))
		return 0;

	config_match = config & P4_CONFIG_EVENT_ALIAS_MASK;

	for (i = 0; i < ARRAY_SIZE(p4_event_aliases); i++) {
		if (config_match == p4_event_aliases[i].original) {
			config_match = p4_event_aliases[i].alternative;
			break;
		} else if (config_match == p4_event_aliases[i].alternative) {
			config_match = p4_event_aliases[i].original;
			break;
		}
	}

	if (i >= ARRAY_SIZE(p4_event_aliases))
		return 0;

	return config_match | (config & P4_CONFIG_EVENT_ALIAS_IMMUTABLE_BITS);
}

static u64 p4_general_events[PERF_COUNT_HW_MAX] = {
  /* non-halted CPU clocks */
  [PERF_COUNT_HW_CPU_CYCLES] =
	p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_GLOBAL_POWER_EVENTS)		|
		P4_ESCR_EMASK_BIT(P4_EVENT_GLOBAL_POWER_EVENTS, RUNNING))	|
		P4_CONFIG_ALIASABLE,

  /*
   * retired instructions
   * in a sake of simplicity we don't use the FSB tagging
   */
  [PERF_COUNT_HW_INSTRUCTIONS] =
	p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_INSTR_RETIRED)		|
		P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, NBOGUSNTAG)		|
		P4_ESCR_EMASK_BIT(P4_EVENT_INSTR_RETIRED, BOGUSNTAG)),

  /* cache hits */
  [PERF_COUNT_HW_CACHE_REFERENCES] =
	p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_BSQ_CACHE_REFERENCE)		|
		P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITS)	|
		P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITE)	|
		P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITM)	|
		P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITS)	|
		P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITE)	|
		P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITM)),

  /* cache misses */
  [PERF_COUNT_HW_CACHE_MISSES] =
	p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_BSQ_CACHE_REFERENCE)		|
		P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_MISS)	|
		P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_MISS)	|
		P4_ESCR_EMASK_BIT(P4_EVENT_BSQ_CACHE_REFERENCE, WR_2ndL_MISS)),

  /* branch instructions retired */
  [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] =
	p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_RETIRED_BRANCH_TYPE)		|
		P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CONDITIONAL)	|
		P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, CALL)		|
		P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, RETURN)		|
		P4_ESCR_EMASK_BIT(P4_EVENT_RETIRED_BRANCH_TYPE, INDIRECT)),

  /* mispredicted branches retired */
  [PERF_COUNT_HW_BRANCH_MISSES]	=
	p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_MISPRED_BRANCH_RETIRED)	|
		P4_ESCR_EMASK_BIT(P4_EVENT_MISPRED_BRANCH_RETIRED, NBOGUS)),

  /* bus ready clocks (cpu is driving #DRDY_DRV\#DRDY_OWN):  */
  [PERF_COUNT_HW_BUS_CYCLES] =
	p4_config_pack_escr(P4_ESCR_EVENT(P4_EVENT_FSB_DATA_ACTIVITY)		|
		P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_DRV)		|
		P4_ESCR_EMASK_BIT(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_OWN))	|
	p4_config_pack_cccr(P4_CCCR_EDGE | P4_CCCR_COMPARE),
};

static struct p4_event_bind *p4_config_get_bind(u64 config)
{
	unsigned int evnt = p4_config_unpack_event(config);
	struct p4_event_bind *bind = NULL;

	if (evnt < ARRAY_SIZE(p4_event_bind_map))
		bind = &p4_event_bind_map[evnt];

	return bind;
}

static u64 p4_pmu_event_map(int hw_event)
{
	struct p4_event_bind *bind;
	unsigned int esel;
	u64 config;

	config = p4_general_events[hw_event];
	bind = p4_config_get_bind(config);
	esel = P4_OPCODE_ESEL(bind->opcode);
	config |= p4_config_pack_cccr(P4_CCCR_ESEL(esel));

	return config;
}

/* check cpu model specifics */
static bool p4_event_match_cpu_model(unsigned int event_idx)
{
	/* INSTR_COMPLETED event only exist for model 3, 4, 6 (Prescott) */
	if (event_idx == P4_EVENT_INSTR_COMPLETED) {
		if (boot_cpu_data.x86_model != 3 &&
			boot_cpu_data.x86_model != 4 &&
			boot_cpu_data.x86_model != 6)
			return false;
	}

	/*
	 * For info
	 * - IQ_ESCR0, IQ_ESCR1 only for models 1 and 2
	 */

	return true;
}

static int p4_validate_raw_event(struct perf_event *event)
{
	unsigned int v, emask;

	/* User data may have out-of-bound event index */
	v = p4_config_unpack_event(event->attr.config);
	if (v >= ARRAY_SIZE(p4_event_bind_map))
		return -EINVAL;

	/* It may be unsupported: */
	if (!p4_event_match_cpu_model(v))
		return -EINVAL;

	/*
	 * NOTE: P4_CCCR_THREAD_ANY has not the same meaning as
	 * in Architectural Performance Monitoring, it means not
	 * on _which_ logical cpu to count but rather _when_, ie it
	 * depends on logical cpu state -- count event if one cpu active,
	 * none, both or any, so we just allow user to pass any value
	 * desired.
	 *
	 * In turn we always set Tx_OS/Tx_USR bits bound to logical
	 * cpu without their propagation to another cpu
	 */

	/*
	 * if an event is shared across the logical threads
	 * the user needs special permissions to be able to use it
	 */
	if (p4_ht_active() && p4_event_bind_map[v].shared) {
		if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
			return -EACCES;
	}

	/* ESCR EventMask bits may be invalid */
	emask = p4_config_unpack_escr(event->attr.config) & P4_ESCR_EVENTMASK_MASK;
	if (emask & ~p4_event_bind_map[v].escr_emask)
		return -EINVAL;

	/*
	 * it may have some invalid PEBS bits
	 */
	if (p4_config_pebs_has(event->attr.config, P4_PEBS_CONFIG_ENABLE))
		return -EINVAL;

	v = p4_config_unpack_metric(event->attr.config);
	if (v >= ARRAY_SIZE(p4_pebs_bind_map))
		return -EINVAL;

	return 0;
}

static int p4_hw_config(struct perf_event *event)
{
	int cpu = get_cpu();
	int rc = 0;
	u32 escr, cccr;

	/*
	 * the reason we use cpu that early is that: if we get scheduled
	 * first time on the same cpu -- we will not need swap thread
	 * specific flags in config (and will save some cpu cycles)
	 */

	cccr = p4_default_cccr_conf(cpu);
	escr = p4_default_escr_conf(cpu, event->attr.exclude_kernel,
					 event->attr.exclude_user);
	event->hw.config = p4_config_pack_escr(escr) |
			   p4_config_pack_cccr(cccr);

	if (p4_ht_active() && p4_ht_thread(cpu))
		event->hw.config = p4_set_ht_bit(event->hw.config);

	if (event->attr.type == PERF_TYPE_RAW) {
		struct p4_event_bind *bind;
		unsigned int esel;
		/*
		 * Clear bits we reserve to be managed by kernel itself
		 * and never allowed from a user space
		 */
		event->attr.config &= P4_CONFIG_MASK;

		rc = p4_validate_raw_event(event);
		if (rc)
			goto out;

		/*
		 * Note that for RAW events we allow user to use P4_CCCR_RESERVED
		 * bits since we keep additional info here (for cache events and etc)
		 */
		event->hw.config |= event->attr.config;
		bind = p4_config_get_bind(event->attr.config);
		if (!bind) {
			rc = -EINVAL;
			goto out;
		}
		esel = P4_OPCODE_ESEL(bind->opcode);
		event->hw.config |= p4_config_pack_cccr(P4_CCCR_ESEL(esel));
	}

	rc = x86_setup_perfctr(event);
out:
	put_cpu();
	return rc;
}

static inline int p4_pmu_clear_cccr_ovf(struct hw_perf_event *hwc)
{
	u64 v;

	/* an official way for overflow indication */
	rdmsrl(hwc->config_base, v);
	if (v & P4_CCCR_OVF) {
		wrmsrl(hwc->config_base, v & ~P4_CCCR_OVF);
		return 1;
	}

	/*
	 * In some circumstances the overflow might issue an NMI but did
	 * not set P4_CCCR_OVF bit. Because a counter holds a negative value
	 * we simply check for high bit being set, if it's cleared it means
	 * the counter has reached zero value and continued counting before
	 * real NMI signal was received:
	 */
	rdmsrl(hwc->event_base, v);
	if (!(v & ARCH_P4_UNFLAGGED_BIT))
		return 1;

	return 0;
}

static void p4_pmu_disable_pebs(void)
{
	/*
	 * FIXME
	 *
	 * It's still allowed that two threads setup same cache
	 * events so we can't simply clear metrics until we knew
	 * no one is depending on us, so we need kind of counter
	 * for "ReplayEvent" users.
	 *
	 * What is more complex -- RAW events, if user (for some
	 * reason) will pass some cache event metric with improper
	 * event opcode -- it's fine from hardware point of view
	 * but completely nonsense from "meaning" of such action.
	 *
	 * So at moment let leave metrics turned on forever -- it's
	 * ok for now but need to be revisited!
	 *
	 * (void)wrmsrl_safe(MSR_IA32_PEBS_ENABLE, 0);
	 * (void)wrmsrl_safe(MSR_P4_PEBS_MATRIX_VERT, 0);
	 */
}

static inline void p4_pmu_disable_event(struct perf_event *event)
{
	struct hw_perf_event *hwc = &event->hw;

	/*
	 * If event gets disabled while counter is in overflowed
	 * state we need to clear P4_CCCR_OVF, otherwise interrupt get
	 * asserted again and again
	 */
	(void)wrmsrl_safe(hwc->config_base,
		p4_config_unpack_cccr(hwc->config) & ~P4_CCCR_ENABLE & ~P4_CCCR_OVF & ~P4_CCCR_RESERVED);
}

static void p4_pmu_disable_all(void)
{
	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
	int idx;

	for (idx = 0; idx < x86_pmu.num_counters; idx++) {
		struct perf_event *event = cpuc->events[idx];
		if (!test_bit(idx, cpuc->active_mask))
			continue;
		p4_pmu_disable_event(event);
	}

	p4_pmu_disable_pebs();
}

/* configuration must be valid */
static void p4_pmu_enable_pebs(u64 config)
{
	struct p4_pebs_bind *bind;
	unsigned int idx;

	BUILD_BUG_ON(P4_PEBS_METRIC__max > P4_PEBS_CONFIG_METRIC_MASK);

	idx = p4_config_unpack_metric(config);
	if (idx == P4_PEBS_METRIC__none)
		return;

	bind = &p4_pebs_bind_map[idx];

	(void)wrmsrl_safe(MSR_IA32_PEBS_ENABLE,	(u64)bind->metric_pebs);
	(void)wrmsrl_safe(MSR_P4_PEBS_MATRIX_VERT,	(u64)bind->metric_vert);
}

static void p4_pmu_enable_event(struct perf_event *event)
{
	struct hw_perf_event *hwc = &event->hw;
	int thread = p4_ht_config_thread(hwc->config);
	u64 escr_conf = p4_config_unpack_escr(p4_clear_ht_bit(hwc->config));
	unsigned int idx = p4_config_unpack_event(hwc->config);
	struct p4_event_bind *bind;
	u64 escr_addr, cccr;

	bind = &p4_event_bind_map[idx];
	escr_addr = bind->escr_msr[thread];

	/*
	 * - we dont support cascaded counters yet
	 * - and counter 1 is broken (erratum)
	 */
	WARN_ON_ONCE(p4_is_event_cascaded(hwc->config));
	WARN_ON_ONCE(hwc->idx == 1);

	/* we need a real Event value */
	escr_conf &= ~P4_ESCR_EVENT_MASK;
	escr_conf |= P4_ESCR_EVENT(P4_OPCODE_EVNT(bind->opcode));

	cccr = p4_config_unpack_cccr(hwc->config);

	/*
	 * it could be Cache event so we need to write metrics
	 * into additional MSRs
	 */
	p4_pmu_enable_pebs(hwc->config);

	(void)wrmsrl_safe(escr_addr, escr_conf);
	(void)wrmsrl_safe(hwc->config_base,
				(cccr & ~P4_CCCR_RESERVED) | P4_CCCR_ENABLE);
}

static void p4_pmu_enable_all(int added)
{
	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
	int idx;

	for (idx = 0; idx < x86_pmu.num_counters; idx++) {
		struct perf_event *event = cpuc->events[idx];
		if (!test_bit(idx, cpuc->active_mask))
			continue;
		p4_pmu_enable_event(event);
	}
}

static int p4_pmu_handle_irq(struct pt_regs *regs)
{
	struct perf_sample_data data;
	struct cpu_hw_events *cpuc;
	struct perf_event *event;
	struct hw_perf_event *hwc;
	int idx, handled = 0;
	u64 val;

	cpuc = this_cpu_ptr(&cpu_hw_events);

	for (idx = 0; idx < x86_pmu.num_counters; idx++) {
		int overflow;

		if (!test_bit(idx, cpuc->active_mask)) {
			/* catch in-flight IRQs */
			if (__test_and_clear_bit(idx, cpuc->running))
				handled++;
			continue;
		}

		event = cpuc->events[idx];
		hwc = &event->hw;

		WARN_ON_ONCE(hwc->idx != idx);

		/* it might be unflagged overflow */
		overflow = p4_pmu_clear_cccr_ovf(hwc);

		val = x86_perf_event_update(event);
		if (!overflow && (val & (1ULL << (x86_pmu.cntval_bits - 1))))
			continue;

		handled += overflow;

		/* event overflow for sure */
		perf_sample_data_init(&data, 0, hwc->last_period);

		if (!x86_perf_event_set_period(event))
			continue;


		if (perf_event_overflow(event, &data, regs))
			x86_pmu_stop(event, 0);
	}

	if (handled)
		inc_irq_stat(apic_perf_irqs);

	/*
	 * When dealing with the unmasking of the LVTPC on P4 perf hw, it has
	 * been observed that the OVF bit flag has to be cleared first _before_
	 * the LVTPC can be unmasked.
	 *
	 * The reason is the NMI line will continue to be asserted while the OVF
	 * bit is set.  This causes a second NMI to generate if the LVTPC is
	 * unmasked before the OVF bit is cleared, leading to unknown NMI
	 * messages.
	 */
	apic_write(APIC_LVTPC, APIC_DM_NMI);

	return handled;
}

/*
 * swap thread specific fields according to a thread
 * we are going to run on
 */
static void p4_pmu_swap_config_ts(struct hw_perf_event *hwc, int cpu)
{
	u32 escr, cccr;

	/*
	 * we either lucky and continue on same cpu or no HT support
	 */
	if (!p4_should_swap_ts(hwc->config, cpu))
		return;

	/*
	 * the event is migrated from an another logical
	 * cpu, so we need to swap thread specific flags
	 */

	escr = p4_config_unpack_escr(hwc->config);
	cccr = p4_config_unpack_cccr(hwc->config);

	if (p4_ht_thread(cpu)) {
		cccr &= ~P4_CCCR_OVF_PMI_T0;
		cccr |= P4_CCCR_OVF_PMI_T1;
		if (escr & P4_ESCR_T0_OS) {
			escr &= ~P4_ESCR_T0_OS;
			escr |= P4_ESCR_T1_OS;
		}
		if (escr & P4_ESCR_T0_USR) {
			escr &= ~P4_ESCR_T0_USR;
			escr |= P4_ESCR_T1_USR;
		}
		hwc->config  = p4_config_pack_escr(escr);
		hwc->config |= p4_config_pack_cccr(cccr);
		hwc->config |= P4_CONFIG_HT;
	} else {
		cccr &= ~P4_CCCR_OVF_PMI_T1;
		cccr |= P4_CCCR_OVF_PMI_T0;
		if (escr & P4_ESCR_T1_OS) {
			escr &= ~P4_ESCR_T1_OS;
			escr |= P4_ESCR_T0_OS;
		}
		if (escr & P4_ESCR_T1_USR) {
			escr &= ~P4_ESCR_T1_USR;
			escr |= P4_ESCR_T0_USR;
		}
		hwc->config  = p4_config_pack_escr(escr);
		hwc->config |= p4_config_pack_cccr(cccr);
		hwc->config &= ~P4_CONFIG_HT;
	}
}

/*
 * ESCR address hashing is tricky, ESCRs are not sequential
 * in memory but all starts from MSR_P4_BSU_ESCR0 (0x03a0) and
 * the metric between any ESCRs is laid in range [0xa0,0xe1]
 *
 * so we make ~70% filled hashtable
 */

#define P4_ESCR_MSR_BASE		0x000003a0
#define P4_ESCR_MSR_MAX			0x000003e1
#define P4_ESCR_MSR_TABLE_SIZE		(P4_ESCR_MSR_MAX - P4_ESCR_MSR_BASE + 1)
#define P4_ESCR_MSR_IDX(msr)		(msr - P4_ESCR_MSR_BASE)
#define P4_ESCR_MSR_TABLE_ENTRY(msr)	[P4_ESCR_MSR_IDX(msr)] = msr

static const unsigned int p4_escr_table[P4_ESCR_MSR_TABLE_SIZE] = {
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_ALF_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_ALF_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_BPU_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_BPU_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_BSU_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_BSU_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR2),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR3),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR4),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_CRU_ESCR5),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_DAC_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_DAC_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FIRM_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FIRM_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FLAME_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FLAME_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FSB_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_FSB_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IQ_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IQ_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IS_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IS_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_ITLB_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_ITLB_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IX_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_IX_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_MOB_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_MOB_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_MS_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_MS_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_PMH_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_PMH_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_RAT_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_RAT_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_SAAT_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_SAAT_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_SSU_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_SSU_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_TBPU_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_TBPU_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_TC_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_TC_ESCR1),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_U2L_ESCR0),
	P4_ESCR_MSR_TABLE_ENTRY(MSR_P4_U2L_ESCR1),
};

static int p4_get_escr_idx(unsigned int addr)
{
	unsigned int idx = P4_ESCR_MSR_IDX(addr);

	if (unlikely(idx >= P4_ESCR_MSR_TABLE_SIZE	||
			!p4_escr_table[idx]		||
			p4_escr_table[idx] != addr)) {
		WARN_ONCE(1, "P4 PMU: Wrong address passed: %x\n", addr);
		return -1;
	}

	return idx;
}

static int p4_next_cntr(int thread, unsigned long *used_mask,
			struct p4_event_bind *bind)
{
	int i, j;

	for (i = 0; i < P4_CNTR_LIMIT; i++) {
		j = bind->cntr[thread][i];
		if (j != -1 && !test_bit(j, used_mask))
			return j;
	}

	return -1;
}

static int p4_pmu_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign)
{
	unsigned long used_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
	unsigned long escr_mask[BITS_TO_LONGS(P4_ESCR_MSR_TABLE_SIZE)];
	int cpu = smp_processor_id();
	struct hw_perf_event *hwc;
	struct p4_event_bind *bind;
	unsigned int i, thread, num;
	int cntr_idx, escr_idx;
	u64 config_alias;
	int pass;

	bitmap_zero(used_mask, X86_PMC_IDX_MAX);
	bitmap_zero(escr_mask, P4_ESCR_MSR_TABLE_SIZE);

	for (i = 0, num = n; i < n; i++, num--) {

		hwc = &cpuc->event_list[i]->hw;
		thread = p4_ht_thread(cpu);
		pass = 0;

again:
		/*
		 * It's possible to hit a circular lock
		 * between original and alternative events
		 * if both are scheduled already.
		 */
		if (pass > 2)
			goto done;

		bind = p4_config_get_bind(hwc->config);
		escr_idx = p4_get_escr_idx(bind->escr_msr[thread]);
		if (unlikely(escr_idx == -1))
			goto done;

		if (hwc->idx != -1 && !p4_should_swap_ts(hwc->config, cpu)) {
			cntr_idx = hwc->idx;
			if (assign)
				assign[i] = hwc->idx;
			goto reserve;
		}

		cntr_idx = p4_next_cntr(thread, used_mask, bind);
		if (cntr_idx == -1 || test_bit(escr_idx, escr_mask)) {
			/*
			 * Check whether an event alias is still available.
			 */
			config_alias = p4_get_alias_event(hwc->config);
			if (!config_alias)
				goto done;
			hwc->config = config_alias;
			pass++;
			goto again;
		}
		/*
		 * Perf does test runs to see if a whole group can be assigned
		 * together succesfully.  There can be multiple rounds of this.
		 * Unfortunately, p4_pmu_swap_config_ts touches the hwc->config
		 * bits, such that the next round of group assignments will
		 * cause the above p4_should_swap_ts to pass instead of fail.
		 * This leads to counters exclusive to thread0 being used by
		 * thread1.
		 *
		 * Solve this with a cheap hack, reset the idx back to -1 to
		 * force a new lookup (p4_next_cntr) to get the right counter
		 * for the right thread.
		 *
		 * This probably doesn't comply with the general spirit of how
		 * perf wants to work, but P4 is special. :-(
		 */
		if (p4_should_swap_ts(hwc->config, cpu))
			hwc->idx = -1;
		p4_pmu_swap_config_ts(hwc, cpu);
		if (assign)
			assign[i] = cntr_idx;
reserve:
		set_bit(cntr_idx, used_mask);
		set_bit(escr_idx, escr_mask);
	}

done:
	return num ? -EINVAL : 0;
}

PMU_FORMAT_ATTR(cccr, "config:0-31" );
PMU_FORMAT_ATTR(escr, "config:32-62");
PMU_FORMAT_ATTR(ht,   "config:63"   );

static struct attribute *intel_p4_formats_attr[] = {
	&format_attr_cccr.attr,
	&format_attr_escr.attr,
	&format_attr_ht.attr,
	NULL,
};

static __initconst const struct x86_pmu p4_pmu = {
	.name			= "Netburst P4/Xeon",
	.handle_irq		= p4_pmu_handle_irq,
	.disable_all		= p4_pmu_disable_all,
	.enable_all		= p4_pmu_enable_all,
	.enable			= p4_pmu_enable_event,
	.disable		= p4_pmu_disable_event,
	.eventsel		= MSR_P4_BPU_CCCR0,
	.perfctr		= MSR_P4_BPU_PERFCTR0,
	.event_map		= p4_pmu_event_map,
	.max_events		= ARRAY_SIZE(p4_general_events),
	.get_event_constraints	= x86_get_event_constraints,
	/*
	 * IF HT disabled we may need to use all
	 * ARCH_P4_MAX_CCCR counters simulaneously
	 * though leave it restricted at moment assuming
	 * HT is on
	 */
	.num_counters		= ARCH_P4_MAX_CCCR,
	.apic			= 1,
	.cntval_bits		= ARCH_P4_CNTRVAL_BITS,
	.cntval_mask		= ARCH_P4_CNTRVAL_MASK,
	.max_period		= (1ULL << (ARCH_P4_CNTRVAL_BITS - 1)) - 1,
	.hw_config		= p4_hw_config,
	.schedule_events	= p4_pmu_schedule_events,
	/*
	 * This handles erratum N15 in intel doc 249199-029,
	 * the counter may not be updated correctly on write
	 * so we need a second write operation to do the trick
	 * (the official workaround didn't work)
	 *
	 * the former idea is taken from OProfile code
	 */
	.perfctr_second_write	= 1,

	.format_attrs		= intel_p4_formats_attr,
};

__init int p4_pmu_init(void)
{
	unsigned int low, high;
	int i, reg;

	/* If we get stripped -- indexing fails */
	BUILD_BUG_ON(ARCH_P4_MAX_CCCR > INTEL_PMC_MAX_GENERIC);

	rdmsr(MSR_IA32_MISC_ENABLE, low, high);
	if (!(low & (1 << 7))) {
		pr_cont("unsupported Netburst CPU model %d ",
			boot_cpu_data.x86_model);
		return -ENODEV;
	}

	memcpy(hw_cache_event_ids, p4_hw_cache_event_ids,
		sizeof(hw_cache_event_ids));

	pr_cont("Netburst events, ");

	x86_pmu = p4_pmu;

	/*
	 * Even though the counters are configured to interrupt a particular
	 * logical processor when an overflow happens, testing has shown that
	 * on kdump kernels (which uses a single cpu), thread1's counter
	 * continues to run and will report an NMI on thread0.  Due to the
	 * overflow bug, this leads to a stream of unknown NMIs.
	 *
	 * Solve this by zero'ing out the registers to mimic a reset.
	 */
	for (i = 0; i < x86_pmu.num_counters; i++) {
		reg = x86_pmu_config_addr(i);
		wrmsrl_safe(reg, 0ULL);
	}

	return 0;
}