summaryrefslogtreecommitdiff
path: root/arch/mips/include/asm/mipsregs.h
blob: 335474c155f6e6187aa19ce49527712ca954c8fb (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
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1994, 1995, 1996, 1997, 2000, 2001 by Ralf Baechle
 * Copyright (C) 2000 Silicon Graphics, Inc.
 * Modified for further R[236]000 support by Paul M. Antoine, 1996.
 * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
 * Copyright (C) 2000, 07 MIPS Technologies, Inc.
 * Copyright (C) 2003, 2004  Maciej W. Rozycki
 */
#ifndef _ASM_MIPSREGS_H
#define _ASM_MIPSREGS_H

#include <linux/linkage.h>
#include <asm/hazards.h>
#include <asm/war.h>

/*
 * The following macros are especially useful for __asm__
 * inline assembler.
 */
#ifndef __STR
#define __STR(x) #x
#endif
#ifndef STR
#define STR(x) __STR(x)
#endif

/*
 *  Configure language
 */
#ifdef __ASSEMBLY__
#define _ULCAST_
#else
#define _ULCAST_ (unsigned long)
#endif

/*
 * Coprocessor 0 register names
 */
#define CP0_INDEX $0
#define CP0_RANDOM $1
#define CP0_ENTRYLO0 $2
#define CP0_ENTRYLO1 $3
#define CP0_CONF $3
#define CP0_CONTEXT $4
#define CP0_PAGEMASK $5
#define CP0_WIRED $6
#define CP0_INFO $7
#define CP0_BADVADDR $8
#define CP0_COUNT $9
#define CP0_ENTRYHI $10
#define CP0_COMPARE $11
#define CP0_STATUS $12
#define CP0_CAUSE $13
#define CP0_EPC $14
#define CP0_PRID $15
#define CP0_CONFIG $16
#define CP0_LLADDR $17
#define CP0_WATCHLO $18
#define CP0_WATCHHI $19
#define CP0_XCONTEXT $20
#define CP0_FRAMEMASK $21
#define CP0_DIAGNOSTIC $22
#define CP0_DEBUG $23
#define CP0_DEPC $24
#define CP0_PERFORMANCE $25
#define CP0_ECC $26
#define CP0_CACHEERR $27
#define CP0_TAGLO $28
#define CP0_TAGHI $29
#define CP0_ERROREPC $30
#define CP0_DESAVE $31

/*
 * R4640/R4650 cp0 register names.  These registers are listed
 * here only for completeness; without MMU these CPUs are not useable
 * by Linux.  A future ELKS port might take make Linux run on them
 * though ...
 */
#define CP0_IBASE $0
#define CP0_IBOUND $1
#define CP0_DBASE $2
#define CP0_DBOUND $3
#define CP0_CALG $17
#define CP0_IWATCH $18
#define CP0_DWATCH $19

/*
 * Coprocessor 0 Set 1 register names
 */
#define CP0_S1_DERRADDR0  $26
#define CP0_S1_DERRADDR1  $27
#define CP0_S1_INTCONTROL $20

/*
 * Coprocessor 0 Set 2 register names
 */
#define CP0_S2_SRSCTL	  $12	/* MIPSR2 */

/*
 * Coprocessor 0 Set 3 register names
 */
#define CP0_S3_SRSMAP	  $12	/* MIPSR2 */

/*
 *  TX39 Series
 */
#define CP0_TX39_CACHE	$7

/*
 * Coprocessor 1 (FPU) register names
 */
#define CP1_REVISION   $0
#define CP1_STATUS     $31

/*
 * FPU Status Register Values
 */
/*
 * Status Register Values
 */

#define FPU_CSR_FLUSH   0x01000000      /* flush denormalised results to 0 */
#define FPU_CSR_COND    0x00800000      /* $fcc0 */
#define FPU_CSR_COND0   0x00800000      /* $fcc0 */
#define FPU_CSR_COND1   0x02000000      /* $fcc1 */
#define FPU_CSR_COND2   0x04000000      /* $fcc2 */
#define FPU_CSR_COND3   0x08000000      /* $fcc3 */
#define FPU_CSR_COND4   0x10000000      /* $fcc4 */
#define FPU_CSR_COND5   0x20000000      /* $fcc5 */
#define FPU_CSR_COND6   0x40000000      /* $fcc6 */
#define FPU_CSR_COND7   0x80000000      /* $fcc7 */

/*
 * Bits 18 - 20 of the FPU Status Register will be read as 0,
 * and should be written as zero.
 */
#define FPU_CSR_RSVD	0x001c0000

/*
 * X the exception cause indicator
 * E the exception enable
 * S the sticky/flag bit
*/
#define FPU_CSR_ALL_X   0x0003f000
#define FPU_CSR_UNI_X   0x00020000
#define FPU_CSR_INV_X   0x00010000
#define FPU_CSR_DIV_X   0x00008000
#define FPU_CSR_OVF_X   0x00004000
#define FPU_CSR_UDF_X   0x00002000
#define FPU_CSR_INE_X   0x00001000

#define FPU_CSR_ALL_E   0x00000f80
#define FPU_CSR_INV_E   0x00000800
#define FPU_CSR_DIV_E   0x00000400
#define FPU_CSR_OVF_E   0x00000200
#define FPU_CSR_UDF_E   0x00000100
#define FPU_CSR_INE_E   0x00000080

#define FPU_CSR_ALL_S   0x0000007c
#define FPU_CSR_INV_S   0x00000040
#define FPU_CSR_DIV_S   0x00000020
#define FPU_CSR_OVF_S   0x00000010
#define FPU_CSR_UDF_S   0x00000008
#define FPU_CSR_INE_S   0x00000004

/* Bits 0 and 1 of FPU Status Register specify the rounding mode */
#define FPU_CSR_RM	0x00000003
#define FPU_CSR_RN      0x0     /* nearest */
#define FPU_CSR_RZ      0x1     /* towards zero */
#define FPU_CSR_RU      0x2     /* towards +Infinity */
#define FPU_CSR_RD      0x3     /* towards -Infinity */


/*
 * Values for PageMask register
 */
#ifdef CONFIG_CPU_VR41XX

/* Why doesn't stupidity hurt ... */

#define PM_1K		0x00000000
#define PM_4K		0x00001800
#define PM_16K		0x00007800
#define PM_64K		0x0001f800
#define PM_256K		0x0007f800

#else

#define PM_4K		0x00000000
#define PM_8K		0x00002000
#define PM_16K		0x00006000
#define PM_32K		0x0000e000
#define PM_64K		0x0001e000
#define PM_128K		0x0003e000
#define PM_256K		0x0007e000
#define PM_512K		0x000fe000
#define PM_1M		0x001fe000
#define PM_2M		0x003fe000
#define PM_4M		0x007fe000
#define PM_8M		0x00ffe000
#define PM_16M		0x01ffe000
#define PM_32M		0x03ffe000
#define PM_64M		0x07ffe000
#define PM_256M		0x1fffe000
#define PM_1G		0x7fffe000

#endif

/*
 * Default page size for a given kernel configuration
 */
#ifdef CONFIG_PAGE_SIZE_4KB
#define PM_DEFAULT_MASK	PM_4K
#elif defined(CONFIG_PAGE_SIZE_8KB)
#define PM_DEFAULT_MASK	PM_8K
#elif defined(CONFIG_PAGE_SIZE_16KB)
#define PM_DEFAULT_MASK	PM_16K
#elif defined(CONFIG_PAGE_SIZE_32KB)
#define PM_DEFAULT_MASK	PM_32K
#elif defined(CONFIG_PAGE_SIZE_64KB)
#define PM_DEFAULT_MASK	PM_64K
#else
#error Bad page size configuration!
#endif

/*
 * Default huge tlb size for a given kernel configuration
 */
#ifdef CONFIG_PAGE_SIZE_4KB
#define PM_HUGE_MASK	PM_1M
#elif defined(CONFIG_PAGE_SIZE_8KB)
#define PM_HUGE_MASK	PM_4M
#elif defined(CONFIG_PAGE_SIZE_16KB)
#define PM_HUGE_MASK	PM_16M
#elif defined(CONFIG_PAGE_SIZE_32KB)
#define PM_HUGE_MASK	PM_64M
#elif defined(CONFIG_PAGE_SIZE_64KB)
#define PM_HUGE_MASK	PM_256M
#elif defined(CONFIG_HUGETLB_PAGE)
#error Bad page size configuration for hugetlbfs!
#endif

/*
 * Values used for computation of new tlb entries
 */
#define PL_4K		12
#define PL_16K		14
#define PL_64K		16
#define PL_256K		18
#define PL_1M		20
#define PL_4M		22
#define PL_16M		24
#define PL_64M		26
#define PL_256M		28

/*
 * PageGrain bits
 */
#define PG_RIE		(_ULCAST_(1) <<  31)
#define PG_XIE		(_ULCAST_(1) <<  30)
#define PG_ELPA		(_ULCAST_(1) <<  29)
#define PG_ESP		(_ULCAST_(1) <<  28)

/*
 * R4x00 interrupt enable / cause bits
 */
#define IE_SW0          (_ULCAST_(1) <<  8)
#define IE_SW1          (_ULCAST_(1) <<  9)
#define IE_IRQ0         (_ULCAST_(1) << 10)
#define IE_IRQ1         (_ULCAST_(1) << 11)
#define IE_IRQ2         (_ULCAST_(1) << 12)
#define IE_IRQ3         (_ULCAST_(1) << 13)
#define IE_IRQ4         (_ULCAST_(1) << 14)
#define IE_IRQ5         (_ULCAST_(1) << 15)

/*
 * R4x00 interrupt cause bits
 */
#define C_SW0           (_ULCAST_(1) <<  8)
#define C_SW1           (_ULCAST_(1) <<  9)
#define C_IRQ0          (_ULCAST_(1) << 10)
#define C_IRQ1          (_ULCAST_(1) << 11)
#define C_IRQ2          (_ULCAST_(1) << 12)
#define C_IRQ3          (_ULCAST_(1) << 13)
#define C_IRQ4          (_ULCAST_(1) << 14)
#define C_IRQ5          (_ULCAST_(1) << 15)

/*
 * Bitfields in the R4xx0 cp0 status register
 */
#define ST0_IE			0x00000001
#define ST0_EXL			0x00000002
#define ST0_ERL			0x00000004
#define ST0_KSU			0x00000018
#  define KSU_USER		0x00000010
#  define KSU_SUPERVISOR	0x00000008
#  define KSU_KERNEL		0x00000000
#define ST0_UX			0x00000020
#define ST0_SX			0x00000040
#define ST0_KX 			0x00000080
#define ST0_DE			0x00010000
#define ST0_CE			0x00020000

/*
 * Setting c0_status.co enables Hit_Writeback and Hit_Writeback_Invalidate
 * cacheops in userspace.  This bit exists only on RM7000 and RM9000
 * processors.
 */
#define ST0_CO			0x08000000

/*
 * Bitfields in the R[23]000 cp0 status register.
 */
#define ST0_IEC                 0x00000001
#define ST0_KUC			0x00000002
#define ST0_IEP			0x00000004
#define ST0_KUP			0x00000008
#define ST0_IEO			0x00000010
#define ST0_KUO			0x00000020
/* bits 6 & 7 are reserved on R[23]000 */
#define ST0_ISC			0x00010000
#define ST0_SWC			0x00020000
#define ST0_CM			0x00080000

/*
 * Bits specific to the R4640/R4650
 */
#define ST0_UM			(_ULCAST_(1) <<  4)
#define ST0_IL			(_ULCAST_(1) << 23)
#define ST0_DL			(_ULCAST_(1) << 24)

/*
 * Enable the MIPS MDMX and DSP ASEs
 */
#define ST0_MX			0x01000000

/*
 * Bitfields in the TX39 family CP0 Configuration Register 3
 */
#define TX39_CONF_ICS_SHIFT	19
#define TX39_CONF_ICS_MASK	0x00380000
#define TX39_CONF_ICS_1KB 	0x00000000
#define TX39_CONF_ICS_2KB 	0x00080000
#define TX39_CONF_ICS_4KB 	0x00100000
#define TX39_CONF_ICS_8KB 	0x00180000
#define TX39_CONF_ICS_16KB 	0x00200000

#define TX39_CONF_DCS_SHIFT	16
#define TX39_CONF_DCS_MASK	0x00070000
#define TX39_CONF_DCS_1KB 	0x00000000
#define TX39_CONF_DCS_2KB 	0x00010000
#define TX39_CONF_DCS_4KB 	0x00020000
#define TX39_CONF_DCS_8KB 	0x00030000
#define TX39_CONF_DCS_16KB 	0x00040000

#define TX39_CONF_CWFON 	0x00004000
#define TX39_CONF_WBON  	0x00002000
#define TX39_CONF_RF_SHIFT	10
#define TX39_CONF_RF_MASK	0x00000c00
#define TX39_CONF_DOZE		0x00000200
#define TX39_CONF_HALT		0x00000100
#define TX39_CONF_LOCK		0x00000080
#define TX39_CONF_ICE		0x00000020
#define TX39_CONF_DCE		0x00000010
#define TX39_CONF_IRSIZE_SHIFT	2
#define TX39_CONF_IRSIZE_MASK	0x0000000c
#define TX39_CONF_DRSIZE_SHIFT	0
#define TX39_CONF_DRSIZE_MASK	0x00000003

/*
 * Status register bits available in all MIPS CPUs.
 */
#define ST0_IM			0x0000ff00
#define  STATUSB_IP0		8
#define  STATUSF_IP0		(_ULCAST_(1) <<  8)
#define  STATUSB_IP1		9
#define  STATUSF_IP1		(_ULCAST_(1) <<  9)
#define  STATUSB_IP2		10
#define  STATUSF_IP2		(_ULCAST_(1) << 10)
#define  STATUSB_IP3		11
#define  STATUSF_IP3		(_ULCAST_(1) << 11)
#define  STATUSB_IP4		12
#define  STATUSF_IP4		(_ULCAST_(1) << 12)
#define  STATUSB_IP5		13
#define  STATUSF_IP5		(_ULCAST_(1) << 13)
#define  STATUSB_IP6		14
#define  STATUSF_IP6		(_ULCAST_(1) << 14)
#define  STATUSB_IP7		15
#define  STATUSF_IP7		(_ULCAST_(1) << 15)
#define  STATUSB_IP8		0
#define  STATUSF_IP8		(_ULCAST_(1) <<  0)
#define  STATUSB_IP9		1
#define  STATUSF_IP9		(_ULCAST_(1) <<  1)
#define  STATUSB_IP10		2
#define  STATUSF_IP10		(_ULCAST_(1) <<  2)
#define  STATUSB_IP11		3
#define  STATUSF_IP11		(_ULCAST_(1) <<  3)
#define  STATUSB_IP12		4
#define  STATUSF_IP12		(_ULCAST_(1) <<  4)
#define  STATUSB_IP13		5
#define  STATUSF_IP13		(_ULCAST_(1) <<  5)
#define  STATUSB_IP14		6
#define  STATUSF_IP14		(_ULCAST_(1) <<  6)
#define  STATUSB_IP15		7
#define  STATUSF_IP15		(_ULCAST_(1) <<  7)
#define ST0_CH			0x00040000
#define ST0_NMI			0x00080000
#define ST0_SR			0x00100000
#define ST0_TS			0x00200000
#define ST0_BEV			0x00400000
#define ST0_RE			0x02000000
#define ST0_FR			0x04000000
#define ST0_CU			0xf0000000
#define ST0_CU0			0x10000000
#define ST0_CU1			0x20000000
#define ST0_CU2			0x40000000
#define ST0_CU3			0x80000000
#define ST0_XX			0x80000000	/* MIPS IV naming */

/*
 * Bitfields and bit numbers in the coprocessor 0 IntCtl register. (MIPSR2)
 *
 * Refer to your MIPS R4xx0 manual, chapter 5 for explanation.
 */
#define INTCTLB_IPPCI		26
#define INTCTLF_IPPCI		(_ULCAST_(7) << INTCTLB_IPPCI)
#define INTCTLB_IPTI		29
#define INTCTLF_IPTI		(_ULCAST_(7) << INTCTLB_IPTI)

/*
 * Bitfields and bit numbers in the coprocessor 0 cause register.
 *
 * Refer to your MIPS R4xx0 manual, chapter 5 for explanation.
 */
#define  CAUSEB_EXCCODE		2
#define  CAUSEF_EXCCODE		(_ULCAST_(31)  <<  2)
#define  CAUSEB_IP		8
#define  CAUSEF_IP		(_ULCAST_(255) <<  8)
#define  CAUSEB_IP0		8
#define  CAUSEF_IP0		(_ULCAST_(1)   <<  8)
#define  CAUSEB_IP1		9
#define  CAUSEF_IP1		(_ULCAST_(1)   <<  9)
#define  CAUSEB_IP2		10
#define  CAUSEF_IP2		(_ULCAST_(1)   << 10)
#define  CAUSEB_IP3		11
#define  CAUSEF_IP3		(_ULCAST_(1)   << 11)
#define  CAUSEB_IP4		12
#define  CAUSEF_IP4		(_ULCAST_(1)   << 12)
#define  CAUSEB_IP5		13
#define  CAUSEF_IP5		(_ULCAST_(1)   << 13)
#define  CAUSEB_IP6		14
#define  CAUSEF_IP6		(_ULCAST_(1)   << 14)
#define  CAUSEB_IP7		15
#define  CAUSEF_IP7		(_ULCAST_(1)   << 15)
#define  CAUSEB_IV		23
#define  CAUSEF_IV		(_ULCAST_(1)   << 23)
#define  CAUSEB_CE		28
#define  CAUSEF_CE		(_ULCAST_(3)   << 28)
#define  CAUSEB_TI		30
#define  CAUSEF_TI		(_ULCAST_(1)   << 30)
#define  CAUSEB_BD		31
#define  CAUSEF_BD		(_ULCAST_(1)   << 31)

/*
 * Bits in the coprocessor 0 config register.
 */
/* Generic bits.  */
#define CONF_CM_CACHABLE_NO_WA		0
#define CONF_CM_CACHABLE_WA		1
#define CONF_CM_UNCACHED		2
#define CONF_CM_CACHABLE_NONCOHERENT	3
#define CONF_CM_CACHABLE_CE		4
#define CONF_CM_CACHABLE_COW		5
#define CONF_CM_CACHABLE_CUW		6
#define CONF_CM_CACHABLE_ACCELERATED	7
#define CONF_CM_CMASK			7
#define CONF_BE			(_ULCAST_(1) << 15)

/* Bits common to various processors.  */
#define CONF_CU			(_ULCAST_(1) <<  3)
#define CONF_DB			(_ULCAST_(1) <<  4)
#define CONF_IB			(_ULCAST_(1) <<  5)
#define CONF_DC			(_ULCAST_(7) <<  6)
#define CONF_IC			(_ULCAST_(7) <<  9)
#define CONF_EB			(_ULCAST_(1) << 13)
#define CONF_EM			(_ULCAST_(1) << 14)
#define CONF_SM			(_ULCAST_(1) << 16)
#define CONF_SC			(_ULCAST_(1) << 17)
#define CONF_EW			(_ULCAST_(3) << 18)
#define CONF_EP			(_ULCAST_(15)<< 24)
#define CONF_EC			(_ULCAST_(7) << 28)
#define CONF_CM			(_ULCAST_(1) << 31)

/* Bits specific to the R4xx0.  */
#define R4K_CONF_SW		(_ULCAST_(1) << 20)
#define R4K_CONF_SS		(_ULCAST_(1) << 21)
#define R4K_CONF_SB		(_ULCAST_(3) << 22)

/* Bits specific to the R5000.  */
#define R5K_CONF_SE		(_ULCAST_(1) << 12)
#define R5K_CONF_SS		(_ULCAST_(3) << 20)

/* Bits specific to the RM7000.  */
#define RM7K_CONF_SE		(_ULCAST_(1) <<  3)
#define RM7K_CONF_TE		(_ULCAST_(1) << 12)
#define RM7K_CONF_CLK		(_ULCAST_(1) << 16)
#define RM7K_CONF_TC		(_ULCAST_(1) << 17)
#define RM7K_CONF_SI		(_ULCAST_(3) << 20)
#define RM7K_CONF_SC		(_ULCAST_(1) << 31)

/* Bits specific to the R10000.  */
#define R10K_CONF_DN		(_ULCAST_(3) <<  3)
#define R10K_CONF_CT		(_ULCAST_(1) <<  5)
#define R10K_CONF_PE		(_ULCAST_(1) <<  6)
#define R10K_CONF_PM		(_ULCAST_(3) <<  7)
#define R10K_CONF_EC		(_ULCAST_(15)<<  9)
#define R10K_CONF_SB		(_ULCAST_(1) << 13)
#define R10K_CONF_SK		(_ULCAST_(1) << 14)
#define R10K_CONF_SS		(_ULCAST_(7) << 16)
#define R10K_CONF_SC		(_ULCAST_(7) << 19)
#define R10K_CONF_DC		(_ULCAST_(7) << 26)
#define R10K_CONF_IC		(_ULCAST_(7) << 29)

/* Bits specific to the VR41xx.  */
#define VR41_CONF_CS		(_ULCAST_(1) << 12)
#define VR41_CONF_P4K		(_ULCAST_(1) << 13)
#define VR41_CONF_BP		(_ULCAST_(1) << 16)
#define VR41_CONF_M16		(_ULCAST_(1) << 20)
#define VR41_CONF_AD		(_ULCAST_(1) << 23)

/* Bits specific to the R30xx.  */
#define R30XX_CONF_FDM		(_ULCAST_(1) << 19)
#define R30XX_CONF_REV		(_ULCAST_(1) << 22)
#define R30XX_CONF_AC		(_ULCAST_(1) << 23)
#define R30XX_CONF_RF		(_ULCAST_(1) << 24)
#define R30XX_CONF_HALT		(_ULCAST_(1) << 25)
#define R30XX_CONF_FPINT	(_ULCAST_(7) << 26)
#define R30XX_CONF_DBR		(_ULCAST_(1) << 29)
#define R30XX_CONF_SB		(_ULCAST_(1) << 30)
#define R30XX_CONF_LOCK		(_ULCAST_(1) << 31)

/* Bits specific to the TX49.  */
#define TX49_CONF_DC		(_ULCAST_(1) << 16)
#define TX49_CONF_IC		(_ULCAST_(1) << 17)  /* conflict with CONF_SC */
#define TX49_CONF_HALT		(_ULCAST_(1) << 18)
#define TX49_CONF_CWFON		(_ULCAST_(1) << 27)

/* Bits specific to the MIPS32/64 PRA.  */
#define MIPS_CONF_MT		(_ULCAST_(7) <<  7)
#define MIPS_CONF_AR		(_ULCAST_(7) << 10)
#define MIPS_CONF_AT		(_ULCAST_(3) << 13)
#define MIPS_CONF_M		(_ULCAST_(1) << 31)

/*
 * Bits in the MIPS32/64 PRA coprocessor 0 config registers 1 and above.
 */
#define MIPS_CONF1_FP		(_ULCAST_(1) <<  0)
#define MIPS_CONF1_EP		(_ULCAST_(1) <<  1)
#define MIPS_CONF1_CA		(_ULCAST_(1) <<  2)
#define MIPS_CONF1_WR		(_ULCAST_(1) <<  3)
#define MIPS_CONF1_PC		(_ULCAST_(1) <<  4)
#define MIPS_CONF1_MD		(_ULCAST_(1) <<  5)
#define MIPS_CONF1_C2		(_ULCAST_(1) <<  6)
#define MIPS_CONF1_DA		(_ULCAST_(7) <<  7)
#define MIPS_CONF1_DL		(_ULCAST_(7) << 10)
#define MIPS_CONF1_DS		(_ULCAST_(7) << 13)
#define MIPS_CONF1_IA		(_ULCAST_(7) << 16)
#define MIPS_CONF1_IL		(_ULCAST_(7) << 19)
#define MIPS_CONF1_IS		(_ULCAST_(7) << 22)
#define MIPS_CONF1_TLBS		(_ULCAST_(63)<< 25)

#define MIPS_CONF2_SA		(_ULCAST_(15)<<  0)
#define MIPS_CONF2_SL		(_ULCAST_(15)<<  4)
#define MIPS_CONF2_SS		(_ULCAST_(15)<<  8)
#define MIPS_CONF2_SU		(_ULCAST_(15)<< 12)
#define MIPS_CONF2_TA		(_ULCAST_(15)<< 16)
#define MIPS_CONF2_TL		(_ULCAST_(15)<< 20)
#define MIPS_CONF2_TS		(_ULCAST_(15)<< 24)
#define MIPS_CONF2_TU		(_ULCAST_(7) << 28)

#define MIPS_CONF3_TL		(_ULCAST_(1) <<  0)
#define MIPS_CONF3_SM		(_ULCAST_(1) <<  1)
#define MIPS_CONF3_MT		(_ULCAST_(1) <<  2)
#define MIPS_CONF3_SP		(_ULCAST_(1) <<  4)
#define MIPS_CONF3_VINT		(_ULCAST_(1) <<  5)
#define MIPS_CONF3_VEIC		(_ULCAST_(1) <<  6)
#define MIPS_CONF3_LPA		(_ULCAST_(1) <<  7)
#define MIPS_CONF3_DSP		(_ULCAST_(1) << 10)
#define MIPS_CONF3_ULRI		(_ULCAST_(1) << 13)

#define MIPS_CONF4_MMUSIZEEXT	(_ULCAST_(255) << 0)
#define MIPS_CONF4_MMUEXTDEF	(_ULCAST_(3) << 14)
#define MIPS_CONF4_MMUEXTDEF_MMUSIZEEXT (_ULCAST_(1) << 14)

#define MIPS_CONF7_WII		(_ULCAST_(1) << 31)

#define MIPS_CONF7_RPS		(_ULCAST_(1) << 2)


/*
 * Bits in the MIPS32/64 coprocessor 1 (FPU) revision register.
 */
#define MIPS_FPIR_S		(_ULCAST_(1) << 16)
#define MIPS_FPIR_D		(_ULCAST_(1) << 17)
#define MIPS_FPIR_PS		(_ULCAST_(1) << 18)
#define MIPS_FPIR_3D		(_ULCAST_(1) << 19)
#define MIPS_FPIR_W		(_ULCAST_(1) << 20)
#define MIPS_FPIR_L		(_ULCAST_(1) << 21)
#define MIPS_FPIR_F64		(_ULCAST_(1) << 22)

#ifndef __ASSEMBLY__

/*
 * Functions to access the R10000 performance counters.  These are basically
 * mfc0 and mtc0 instructions from and to coprocessor register with a 5-bit
 * performance counter number encoded into bits 1 ... 5 of the instruction.
 * Only performance counters 0 to 1 actually exist, so for a non-R10000 aware
 * disassembler these will look like an access to sel 0 or 1.
 */
#define read_r10k_perf_cntr(counter)				\
({								\
	unsigned int __res;					\
	__asm__ __volatile__(					\
	"mfpc\t%0, %1"						\
        : "=r" (__res)						\
	: "i" (counter));					\
								\
        __res;							\
})

#define write_r10k_perf_cntr(counter,val)                       \
do {								\
	__asm__ __volatile__(					\
	"mtpc\t%0, %1"						\
	:							\
	: "r" (val), "i" (counter));				\
} while (0)

#define read_r10k_perf_event(counter)				\
({								\
	unsigned int __res;					\
	__asm__ __volatile__(					\
	"mfps\t%0, %1"						\
        : "=r" (__res)						\
	: "i" (counter));					\
								\
        __res;							\
})

#define write_r10k_perf_cntl(counter,val)                       \
do {								\
	__asm__ __volatile__(					\
	"mtps\t%0, %1"						\
	:							\
	: "r" (val), "i" (counter));				\
} while (0)


/*
 * Macros to access the system control coprocessor
 */

#define __read_32bit_c0_register(source, sel)				\
({ int __res;								\
	if (sel == 0)							\
		__asm__ __volatile__(					\
			"mfc0\t%0, " #source "\n\t"			\
			: "=r" (__res));				\
	else								\
		__asm__ __volatile__(					\
			".set\tmips32\n\t"				\
			"mfc0\t%0, " #source ", " #sel "\n\t"		\
			".set\tmips0\n\t"				\
			: "=r" (__res));				\
	__res;								\
})

#define __read_64bit_c0_register(source, sel)				\
({ unsigned long long __res;						\
	if (sizeof(unsigned long) == 4)					\
		__res = __read_64bit_c0_split(source, sel);		\
	else if (sel == 0)						\
		__asm__ __volatile__(					\
			".set\tmips3\n\t"				\
			"dmfc0\t%0, " #source "\n\t"			\
			".set\tmips0"					\
			: "=r" (__res));				\
	else								\
		__asm__ __volatile__(					\
			".set\tmips64\n\t"				\
			"dmfc0\t%0, " #source ", " #sel "\n\t"		\
			".set\tmips0"					\
			: "=r" (__res));				\
	__res;								\
})

#define __write_32bit_c0_register(register, sel, value)			\
do {									\
	if (sel == 0)							\
		__asm__ __volatile__(					\
			"mtc0\t%z0, " #register "\n\t"			\
			: : "Jr" ((unsigned int)(value)));		\
	else								\
		__asm__ __volatile__(					\
			".set\tmips32\n\t"				\
			"mtc0\t%z0, " #register ", " #sel "\n\t"	\
			".set\tmips0"					\
			: : "Jr" ((unsigned int)(value)));		\
} while (0)

#define __write_64bit_c0_register(register, sel, value)			\
do {									\
	if (sizeof(unsigned long) == 4)					\
		__write_64bit_c0_split(register, sel, value);		\
	else if (sel == 0)						\
		__asm__ __volatile__(					\
			".set\tmips3\n\t"				\
			"dmtc0\t%z0, " #register "\n\t"			\
			".set\tmips0"					\
			: : "Jr" (value));				\
	else								\
		__asm__ __volatile__(					\
			".set\tmips64\n\t"				\
			"dmtc0\t%z0, " #register ", " #sel "\n\t"	\
			".set\tmips0"					\
			: : "Jr" (value));				\
} while (0)

#define __read_ulong_c0_register(reg, sel)				\
	((sizeof(unsigned long) == 4) ?					\
	(unsigned long) __read_32bit_c0_register(reg, sel) :		\
	(unsigned long) __read_64bit_c0_register(reg, sel))

#define __write_ulong_c0_register(reg, sel, val)			\
do {									\
	if (sizeof(unsigned long) == 4)					\
		__write_32bit_c0_register(reg, sel, val);		\
	else								\
		__write_64bit_c0_register(reg, sel, val);		\
} while (0)

/*
 * On RM7000/RM9000 these are uses to access cop0 set 1 registers
 */
#define __read_32bit_c0_ctrl_register(source)				\
({ int __res;								\
	__asm__ __volatile__(						\
		"cfc0\t%0, " #source "\n\t"				\
		: "=r" (__res));					\
	__res;								\
})

#define __write_32bit_c0_ctrl_register(register, value)			\
do {									\
	__asm__ __volatile__(						\
		"ctc0\t%z0, " #register "\n\t"				\
		: : "Jr" ((unsigned int)(value)));			\
} while (0)

/*
 * These versions are only needed for systems with more than 38 bits of
 * physical address space running the 32-bit kernel.  That's none atm :-)
 */
#define __read_64bit_c0_split(source, sel)				\
({									\
	unsigned long long __val;					\
	unsigned long __flags;						\
									\
	local_irq_save(__flags);					\
	if (sel == 0)							\
		__asm__ __volatile__(					\
			".set\tmips64\n\t"				\
			"dmfc0\t%M0, " #source "\n\t"			\
			"dsll\t%L0, %M0, 32\n\t"			\
			"dsra\t%M0, %M0, 32\n\t"			\
			"dsra\t%L0, %L0, 32\n\t"			\
			".set\tmips0"					\
			: "=r" (__val));				\
	else								\
		__asm__ __volatile__(					\
			".set\tmips64\n\t"				\
			"dmfc0\t%M0, " #source ", " #sel "\n\t"		\
			"dsll\t%L0, %M0, 32\n\t"			\
			"dsra\t%M0, %M0, 32\n\t"			\
			"dsra\t%L0, %L0, 32\n\t"			\
			".set\tmips0"					\
			: "=r" (__val));				\
	local_irq_restore(__flags);					\
									\
	__val;								\
})

#define __write_64bit_c0_split(source, sel, val)			\
do {									\
	unsigned long __flags;						\
									\
	local_irq_save(__flags);					\
	if (sel == 0)							\
		__asm__ __volatile__(					\
			".set\tmips64\n\t"				\
			"dsll\t%L0, %L0, 32\n\t"			\
			"dsrl\t%L0, %L0, 32\n\t"			\
			"dsll\t%M0, %M0, 32\n\t"			\
			"or\t%L0, %L0, %M0\n\t"				\
			"dmtc0\t%L0, " #source "\n\t"			\
			".set\tmips0"					\
			: : "r" (val));					\
	else								\
		__asm__ __volatile__(					\
			".set\tmips64\n\t"				\
			"dsll\t%L0, %L0, 32\n\t"			\
			"dsrl\t%L0, %L0, 32\n\t"			\
			"dsll\t%M0, %M0, 32\n\t"			\
			"or\t%L0, %L0, %M0\n\t"				\
			"dmtc0\t%L0, " #source ", " #sel "\n\t"		\
			".set\tmips0"					\
			: : "r" (val));					\
	local_irq_restore(__flags);					\
} while (0)

#define read_c0_index()		__read_32bit_c0_register($0, 0)
#define write_c0_index(val)	__write_32bit_c0_register($0, 0, val)

#define read_c0_random()	__read_32bit_c0_register($1, 0)
#define write_c0_random(val)	__write_32bit_c0_register($1, 0, val)

#define read_c0_entrylo0()	__read_ulong_c0_register($2, 0)
#define write_c0_entrylo0(val)	__write_ulong_c0_register($2, 0, val)

#define read_c0_entrylo1()	__read_ulong_c0_register($3, 0)
#define write_c0_entrylo1(val)	__write_ulong_c0_register($3, 0, val)

#define read_c0_conf()		__read_32bit_c0_register($3, 0)
#define write_c0_conf(val)	__write_32bit_c0_register($3, 0, val)

#define read_c0_context()	__read_ulong_c0_register($4, 0)
#define write_c0_context(val)	__write_ulong_c0_register($4, 0, val)

#define read_c0_userlocal()	__read_ulong_c0_register($4, 2)
#define write_c0_userlocal(val)	__write_ulong_c0_register($4, 2, val)

#define read_c0_pagemask()	__read_32bit_c0_register($5, 0)
#define write_c0_pagemask(val)	__write_32bit_c0_register($5, 0, val)

#define read_c0_pagegrain()	__read_32bit_c0_register($5, 1)
#define write_c0_pagegrain(val)	__write_32bit_c0_register($5, 1, val)

#define read_c0_wired()		__read_32bit_c0_register($6, 0)
#define write_c0_wired(val)	__write_32bit_c0_register($6, 0, val)

#define read_c0_info()		__read_32bit_c0_register($7, 0)

#define read_c0_cache()		__read_32bit_c0_register($7, 0)	/* TX39xx */
#define write_c0_cache(val)	__write_32bit_c0_register($7, 0, val)

#define read_c0_badvaddr()	__read_ulong_c0_register($8, 0)
#define write_c0_badvaddr(val)	__write_ulong_c0_register($8, 0, val)

#define read_c0_count()		__read_32bit_c0_register($9, 0)
#define write_c0_count(val)	__write_32bit_c0_register($9, 0, val)

#define read_c0_count2()	__read_32bit_c0_register($9, 6) /* pnx8550 */
#define write_c0_count2(val)	__write_32bit_c0_register($9, 6, val)

#define read_c0_count3()	__read_32bit_c0_register($9, 7) /* pnx8550 */
#define write_c0_count3(val)	__write_32bit_c0_register($9, 7, val)

#define read_c0_entryhi()	__read_ulong_c0_register($10, 0)
#define write_c0_entryhi(val)	__write_ulong_c0_register($10, 0, val)

#define read_c0_compare()	__read_32bit_c0_register($11, 0)
#define write_c0_compare(val)	__write_32bit_c0_register($11, 0, val)

#define read_c0_compare2()	__read_32bit_c0_register($11, 6) /* pnx8550 */
#define write_c0_compare2(val)	__write_32bit_c0_register($11, 6, val)

#define read_c0_compare3()	__read_32bit_c0_register($11, 7) /* pnx8550 */
#define write_c0_compare3(val)	__write_32bit_c0_register($11, 7, val)

#define read_c0_status()	__read_32bit_c0_register($12, 0)
#ifdef CONFIG_MIPS_MT_SMTC
#define write_c0_status(val)						\
do {									\
	__write_32bit_c0_register($12, 0, val);				\
	__ehb();							\
} while (0)
#else
/*
 * Legacy non-SMTC code, which may be hazardous
 * but which might not support EHB
 */
#define write_c0_status(val)	__write_32bit_c0_register($12, 0, val)
#endif /* CONFIG_MIPS_MT_SMTC */

#define read_c0_cause()		__read_32bit_c0_register($13, 0)
#define write_c0_cause(val)	__write_32bit_c0_register($13, 0, val)

#define read_c0_epc()		__read_ulong_c0_register($14, 0)
#define write_c0_epc(val)	__write_ulong_c0_register($14, 0, val)

#define read_c0_prid()		__read_32bit_c0_register($15, 0)

#define read_c0_config()	__read_32bit_c0_register($16, 0)
#define read_c0_config1()	__read_32bit_c0_register($16, 1)
#define read_c0_config2()	__read_32bit_c0_register($16, 2)
#define read_c0_config3()	__read_32bit_c0_register($16, 3)
#define read_c0_config4()	__read_32bit_c0_register($16, 4)
#define read_c0_config5()	__read_32bit_c0_register($16, 5)
#define read_c0_config6()	__read_32bit_c0_register($16, 6)
#define read_c0_config7()	__read_32bit_c0_register($16, 7)
#define write_c0_config(val)	__write_32bit_c0_register($16, 0, val)
#define write_c0_config1(val)	__write_32bit_c0_register($16, 1, val)
#define write_c0_config2(val)	__write_32bit_c0_register($16, 2, val)
#define write_c0_config3(val)	__write_32bit_c0_register($16, 3, val)
#define write_c0_config4(val)	__write_32bit_c0_register($16, 4, val)
#define write_c0_config5(val)	__write_32bit_c0_register($16, 5, val)
#define write_c0_config6(val)	__write_32bit_c0_register($16, 6, val)
#define write_c0_config7(val)	__write_32bit_c0_register($16, 7, val)

/*
 * The WatchLo register.  There may be upto 8 of them.
 */
#define read_c0_watchlo0()	__read_ulong_c0_register($18, 0)
#define read_c0_watchlo1()	__read_ulong_c0_register($18, 1)
#define read_c0_watchlo2()	__read_ulong_c0_register($18, 2)
#define read_c0_watchlo3()	__read_ulong_c0_register($18, 3)
#define read_c0_watchlo4()	__read_ulong_c0_register($18, 4)
#define read_c0_watchlo5()	__read_ulong_c0_register($18, 5)
#define read_c0_watchlo6()	__read_ulong_c0_register($18, 6)
#define read_c0_watchlo7()	__read_ulong_c0_register($18, 7)
#define write_c0_watchlo0(val)	__write_ulong_c0_register($18, 0, val)
#define write_c0_watchlo1(val)	__write_ulong_c0_register($18, 1, val)
#define write_c0_watchlo2(val)	__write_ulong_c0_register($18, 2, val)
#define write_c0_watchlo3(val)	__write_ulong_c0_register($18, 3, val)
#define write_c0_watchlo4(val)	__write_ulong_c0_register($18, 4, val)
#define write_c0_watchlo5(val)	__write_ulong_c0_register($18, 5, val)
#define write_c0_watchlo6(val)	__write_ulong_c0_register($18, 6, val)
#define write_c0_watchlo7(val)	__write_ulong_c0_register($18, 7, val)

/*
 * The WatchHi register.  There may be upto 8 of them.
 */
#define read_c0_watchhi0()	__read_32bit_c0_register($19, 0)
#define read_c0_watchhi1()	__read_32bit_c0_register($19, 1)
#define read_c0_watchhi2()	__read_32bit_c0_register($19, 2)
#define read_c0_watchhi3()	__read_32bit_c0_register($19, 3)
#define read_c0_watchhi4()	__read_32bit_c0_register($19, 4)
#define read_c0_watchhi5()	__read_32bit_c0_register($19, 5)
#define read_c0_watchhi6()	__read_32bit_c0_register($19, 6)
#define read_c0_watchhi7()	__read_32bit_c0_register($19, 7)

#define write_c0_watchhi0(val)	__write_32bit_c0_register($19, 0, val)
#define write_c0_watchhi1(val)	__write_32bit_c0_register($19, 1, val)
#define write_c0_watchhi2(val)	__write_32bit_c0_register($19, 2, val)
#define write_c0_watchhi3(val)	__write_32bit_c0_register($19, 3, val)
#define write_c0_watchhi4(val)	__write_32bit_c0_register($19, 4, val)
#define write_c0_watchhi5(val)	__write_32bit_c0_register($19, 5, val)
#define write_c0_watchhi6(val)	__write_32bit_c0_register($19, 6, val)
#define write_c0_watchhi7(val)	__write_32bit_c0_register($19, 7, val)

#define read_c0_xcontext()	__read_ulong_c0_register($20, 0)
#define write_c0_xcontext(val)	__write_ulong_c0_register($20, 0, val)

#define read_c0_intcontrol()	__read_32bit_c0_ctrl_register($20)
#define write_c0_intcontrol(val) __write_32bit_c0_ctrl_register($20, val)

#define read_c0_framemask()	__read_32bit_c0_register($21, 0)
#define write_c0_framemask(val)	__write_32bit_c0_register($21, 0, val)

/* RM9000 PerfControl performance counter control register */
#define read_c0_perfcontrol()	__read_32bit_c0_register($22, 0)
#define write_c0_perfcontrol(val) __write_32bit_c0_register($22, 0, val)

#define read_c0_diag()		__read_32bit_c0_register($22, 0)
#define write_c0_diag(val)	__write_32bit_c0_register($22, 0, val)

#define read_c0_diag1()		__read_32bit_c0_register($22, 1)
#define write_c0_diag1(val)	__write_32bit_c0_register($22, 1, val)

#define read_c0_diag2()		__read_32bit_c0_register($22, 2)
#define write_c0_diag2(val)	__write_32bit_c0_register($22, 2, val)

#define read_c0_diag3()		__read_32bit_c0_register($22, 3)
#define write_c0_diag3(val)	__write_32bit_c0_register($22, 3, val)

#define read_c0_diag4()		__read_32bit_c0_register($22, 4)
#define write_c0_diag4(val)	__write_32bit_c0_register($22, 4, val)

#define read_c0_diag5()		__read_32bit_c0_register($22, 5)
#define write_c0_diag5(val)	__write_32bit_c0_register($22, 5, val)

#define read_c0_debug()		__read_32bit_c0_register($23, 0)
#define write_c0_debug(val)	__write_32bit_c0_register($23, 0, val)

#define read_c0_depc()		__read_ulong_c0_register($24, 0)
#define write_c0_depc(val)	__write_ulong_c0_register($24, 0, val)

/*
 * MIPS32 / MIPS64 performance counters
 */
#define read_c0_perfctrl0()	__read_32bit_c0_register($25, 0)
#define write_c0_perfctrl0(val)	__write_32bit_c0_register($25, 0, val)
#define read_c0_perfcntr0()	__read_32bit_c0_register($25, 1)
#define write_c0_perfcntr0(val)	__write_32bit_c0_register($25, 1, val)
#define read_c0_perfctrl1()	__read_32bit_c0_register($25, 2)
#define write_c0_perfctrl1(val)	__write_32bit_c0_register($25, 2, val)
#define read_c0_perfcntr1()	__read_32bit_c0_register($25, 3)
#define write_c0_perfcntr1(val)	__write_32bit_c0_register($25, 3, val)
#define read_c0_perfctrl2()	__read_32bit_c0_register($25, 4)
#define write_c0_perfctrl2(val)	__write_32bit_c0_register($25, 4, val)
#define read_c0_perfcntr2()	__read_32bit_c0_register($25, 5)
#define write_c0_perfcntr2(val)	__write_32bit_c0_register($25, 5, val)
#define read_c0_perfctrl3()	__read_32bit_c0_register($25, 6)
#define write_c0_perfctrl3(val)	__write_32bit_c0_register($25, 6, val)
#define read_c0_perfcntr3()	__read_32bit_c0_register($25, 7)
#define write_c0_perfcntr3(val)	__write_32bit_c0_register($25, 7, val)

/* RM9000 PerfCount performance counter register */
#define read_c0_perfcount()	__read_64bit_c0_register($25, 0)
#define write_c0_perfcount(val)	__write_64bit_c0_register($25, 0, val)

#define read_c0_ecc()		__read_32bit_c0_register($26, 0)
#define write_c0_ecc(val)	__write_32bit_c0_register($26, 0, val)

#define read_c0_derraddr0()	__read_ulong_c0_register($26, 1)
#define write_c0_derraddr0(val)	__write_ulong_c0_register($26, 1, val)

#define read_c0_cacheerr()	__read_32bit_c0_register($27, 0)

#define read_c0_derraddr1()	__read_ulong_c0_register($27, 1)
#define write_c0_derraddr1(val)	__write_ulong_c0_register($27, 1, val)

#define read_c0_taglo()		__read_32bit_c0_register($28, 0)
#define write_c0_taglo(val)	__write_32bit_c0_register($28, 0, val)

#define read_c0_dtaglo()	__read_32bit_c0_register($28, 2)
#define write_c0_dtaglo(val)	__write_32bit_c0_register($28, 2, val)

#define read_c0_taghi()		__read_32bit_c0_register($29, 0)
#define write_c0_taghi(val)	__write_32bit_c0_register($29, 0, val)

#define read_c0_errorepc()	__read_ulong_c0_register($30, 0)
#define write_c0_errorepc(val)	__write_ulong_c0_register($30, 0, val)

/* MIPSR2 */
#define read_c0_hwrena()	__read_32bit_c0_register($7, 0)
#define write_c0_hwrena(val)	__write_32bit_c0_register($7, 0, val)

#define read_c0_intctl()	__read_32bit_c0_register($12, 1)
#define write_c0_intctl(val)	__write_32bit_c0_register($12, 1, val)

#define read_c0_srsctl()	__read_32bit_c0_register($12, 2)
#define write_c0_srsctl(val)	__write_32bit_c0_register($12, 2, val)

#define read_c0_srsmap()	__read_32bit_c0_register($12, 3)
#define write_c0_srsmap(val)	__write_32bit_c0_register($12, 3, val)

#define read_c0_ebase()		__read_32bit_c0_register($15, 1)
#define write_c0_ebase(val)	__write_32bit_c0_register($15, 1, val)


/* Cavium OCTEON (cnMIPS) */
#define read_c0_cvmcount()	__read_ulong_c0_register($9, 6)
#define write_c0_cvmcount(val)	__write_ulong_c0_register($9, 6, val)

#define read_c0_cvmctl()	__read_64bit_c0_register($9, 7)
#define write_c0_cvmctl(val)	__write_64bit_c0_register($9, 7, val)

#define read_c0_cvmmemctl()	__read_64bit_c0_register($11, 7)
#define write_c0_cvmmemctl(val)	__write_64bit_c0_register($11, 7, val)
/*
 * The cacheerr registers are not standardized.  On OCTEON, they are
 * 64 bits wide.
 */
#define read_octeon_c0_icacheerr()	__read_64bit_c0_register($27, 0)
#define write_octeon_c0_icacheerr(val)	__write_64bit_c0_register($27, 0, val)

#define read_octeon_c0_dcacheerr()	__read_64bit_c0_register($27, 1)
#define write_octeon_c0_dcacheerr(val)	__write_64bit_c0_register($27, 1, val)

/*
 * Macros to access the floating point coprocessor control registers
 */
#define read_32bit_cp1_register(source)                         \
({ int __res;                                                   \
	__asm__ __volatile__(                                   \
	".set\tpush\n\t"					\
	".set\treorder\n\t"					\
	/* gas fails to assemble cfc1 for some archs (octeon).*/ \
	".set\tmips1\n\t"					\
        "cfc1\t%0,"STR(source)"\n\t"                            \
	".set\tpop"						\
        : "=r" (__res));                                        \
        __res;})

#define rddsp(mask)							\
({									\
	unsigned int __res;						\
									\
	__asm__ __volatile__(						\
	"	.set	push				\n"		\
	"	.set	noat				\n"		\
	"	# rddsp $1, %x1				\n"		\
	"	.word	0x7c000cb8 | (%x1 << 16)	\n"		\
	"	move	%0, $1				\n"		\
	"	.set	pop				\n"		\
	: "=r" (__res)							\
	: "i" (mask));							\
	__res;								\
})

#define wrdsp(val, mask)						\
do {									\
	__asm__ __volatile__(						\
	"	.set	push					\n"	\
	"	.set	noat					\n"	\
	"	move	$1, %0					\n"	\
	"	# wrdsp $1, %x1					\n"	\
	"	.word	0x7c2004f8 | (%x1 << 11)		\n"	\
	"	.set	pop					\n"	\
        :								\
	: "r" (val), "i" (mask));					\
} while (0)

#if 0	/* Need DSP ASE capable assembler ... */
#define mflo0() ({ long mflo0; __asm__("mflo %0, $ac0" : "=r" (mflo0)); mflo0;})
#define mflo1() ({ long mflo1; __asm__("mflo %0, $ac1" : "=r" (mflo1)); mflo1;})
#define mflo2() ({ long mflo2; __asm__("mflo %0, $ac2" : "=r" (mflo2)); mflo2;})
#define mflo3() ({ long mflo3; __asm__("mflo %0, $ac3" : "=r" (mflo3)); mflo3;})

#define mfhi0() ({ long mfhi0; __asm__("mfhi %0, $ac0" : "=r" (mfhi0)); mfhi0;})
#define mfhi1() ({ long mfhi1; __asm__("mfhi %0, $ac1" : "=r" (mfhi1)); mfhi1;})
#define mfhi2() ({ long mfhi2; __asm__("mfhi %0, $ac2" : "=r" (mfhi2)); mfhi2;})
#define mfhi3() ({ long mfhi3; __asm__("mfhi %0, $ac3" : "=r" (mfhi3)); mfhi3;})

#define mtlo0(x) __asm__("mtlo %0, $ac0" ::"r" (x))
#define mtlo1(x) __asm__("mtlo %0, $ac1" ::"r" (x))
#define mtlo2(x) __asm__("mtlo %0, $ac2" ::"r" (x))
#define mtlo3(x) __asm__("mtlo %0, $ac3" ::"r" (x))

#define mthi0(x) __asm__("mthi %0, $ac0" ::"r" (x))
#define mthi1(x) __asm__("mthi %0, $ac1" ::"r" (x))
#define mthi2(x) __asm__("mthi %0, $ac2" ::"r" (x))
#define mthi3(x) __asm__("mthi %0, $ac3" ::"r" (x))

#else

#define mfhi0()								\
({									\
	unsigned long __treg;						\
									\
	__asm__ __volatile__(						\
	"	.set	push			\n"			\
	"	.set	noat			\n"			\
	"	# mfhi	%0, $ac0		\n"			\
	"	.word	0x00000810		\n"			\
	"	move	%0, $1			\n"			\
	"	.set	pop			\n"			\
	: "=r" (__treg));						\
	__treg;								\
})

#define mfhi1()								\
({									\
	unsigned long __treg;						\
									\
	__asm__ __volatile__(						\
	"	.set	push			\n"			\
	"	.set	noat			\n"			\
	"	# mfhi	%0, $ac1		\n"			\
	"	.word	0x00200810		\n"			\
	"	move	%0, $1			\n"			\
	"	.set	pop			\n"			\
	: "=r" (__treg));						\
	__treg;								\
})

#define mfhi2()								\
({									\
	unsigned long __treg;						\
									\
	__asm__ __volatile__(						\
	"	.set	push			\n"			\
	"	.set	noat			\n"			\
	"	# mfhi	%0, $ac2		\n"			\
	"	.word	0x00400810		\n"			\
	"	move	%0, $1			\n"			\
	"	.set	pop			\n"			\
	: "=r" (__treg));						\
	__treg;								\
})

#define mfhi3()								\
({									\
	unsigned long __treg;						\
									\
	__asm__ __volatile__(						\
	"	.set	push			\n"			\
	"	.set	noat			\n"			\
	"	# mfhi	%0, $ac3		\n"			\
	"	.word	0x00600810		\n"			\
	"	move	%0, $1			\n"			\
	"	.set	pop			\n"			\
	: "=r" (__treg));						\
	__treg;								\
})

#define mflo0()								\
({									\
	unsigned long __treg;						\
									\
	__asm__ __volatile__(						\
	"	.set	push			\n"			\
	"	.set	noat			\n"			\
	"	# mflo	%0, $ac0		\n"			\
	"	.word	0x00000812		\n"			\
	"	move	%0, $1			\n"			\
	"	.set	pop			\n"			\
	: "=r" (__treg));						\
	__treg;								\
})

#define mflo1()								\
({									\
	unsigned long __treg;						\
									\
	__asm__ __volatile__(						\
	"	.set	push			\n"			\
	"	.set	noat			\n"			\
	"	# mflo	%0, $ac1		\n"			\
	"	.word	0x00200812		\n"			\
	"	move	%0, $1			\n"			\
	"	.set	pop			\n"			\
	: "=r" (__treg));						\
	__treg;								\
})

#define mflo2()								\
({									\
	unsigned long __treg;						\
									\
	__asm__ __volatile__(						\
	"	.set	push			\n"			\
	"	.set	noat			\n"			\
	"	# mflo	%0, $ac2		\n"			\
	"	.word	0x00400812		\n"			\
	"	move	%0, $1			\n"			\
	"	.set	pop			\n"			\
	: "=r" (__treg));						\
	__treg;								\
})

#define mflo3()								\
({									\
	unsigned long __treg;						\
									\
	__asm__ __volatile__(						\
	"	.set	push			\n"			\
	"	.set	noat			\n"			\
	"	# mflo	%0, $ac3		\n"			\
	"	.word	0x00600812		\n"			\
	"	move	%0, $1			\n"			\
	"	.set	pop			\n"			\
	: "=r" (__treg));						\
	__treg;								\
})

#define mthi0(x)							\
do {									\
	__asm__ __volatile__(						\
	"	.set	push					\n"	\
	"	.set	noat					\n"	\
	"	move	$1, %0					\n"	\
	"	# mthi	$1, $ac0				\n"	\
	"	.word	0x00200011				\n"	\
	"	.set	pop					\n"	\
	:								\
	: "r" (x));							\
} while (0)

#define mthi1(x)							\
do {									\
	__asm__ __volatile__(						\
	"	.set	push					\n"	\
	"	.set	noat					\n"	\
	"	move	$1, %0					\n"	\
	"	# mthi	$1, $ac1				\n"	\
	"	.word	0x00200811				\n"	\
	"	.set	pop					\n"	\
	:								\
	: "r" (x));							\
} while (0)

#define mthi2(x)							\
do {									\
	__asm__ __volatile__(						\
	"	.set	push					\n"	\
	"	.set	noat					\n"	\
	"	move	$1, %0					\n"	\
	"	# mthi	$1, $ac2				\n"	\
	"	.word	0x00201011				\n"	\
	"	.set	pop					\n"	\
	:								\
	: "r" (x));							\
} while (0)

#define mthi3(x)							\
do {									\
	__asm__ __volatile__(						\
	"	.set	push					\n"	\
	"	.set	noat					\n"	\
	"	move	$1, %0					\n"	\
	"	# mthi	$1, $ac3				\n"	\
	"	.word	0x00201811				\n"	\
	"	.set	pop					\n"	\
	:								\
	: "r" (x));							\
} while (0)

#define mtlo0(x)							\
do {									\
	__asm__ __volatile__(						\
	"	.set	push					\n"	\
	"	.set	noat					\n"	\
	"	move	$1, %0					\n"	\
	"	# mtlo	$1, $ac0				\n"	\
	"	.word	0x00200013				\n"	\
	"	.set	pop					\n"	\
	:								\
	: "r" (x));							\
} while (0)

#define mtlo1(x)							\
do {									\
	__asm__ __volatile__(						\
	"	.set	push					\n"	\
	"	.set	noat					\n"	\
	"	move	$1, %0					\n"	\
	"	# mtlo	$1, $ac1				\n"	\
	"	.word	0x00200813				\n"	\
	"	.set	pop					\n"	\
	:								\
	: "r" (x));							\
} while (0)

#define mtlo2(x)							\
do {									\
	__asm__ __volatile__(						\
	"	.set	push					\n"	\
	"	.set	noat					\n"	\
	"	move	$1, %0					\n"	\
	"	# mtlo	$1, $ac2				\n"	\
	"	.word	0x00201013				\n"	\
	"	.set	pop					\n"	\
	:								\
	: "r" (x));							\
} while (0)

#define mtlo3(x)							\
do {									\
	__asm__ __volatile__(						\
	"	.set	push					\n"	\
	"	.set	noat					\n"	\
	"	move	$1, %0					\n"	\
	"	# mtlo	$1, $ac3				\n"	\
	"	.word	0x00201813				\n"	\
	"	.set	pop					\n"	\
	:								\
	: "r" (x));							\
} while (0)

#endif

/*
 * TLB operations.
 *
 * It is responsibility of the caller to take care of any TLB hazards.
 */
static inline void tlb_probe(void)
{
	__asm__ __volatile__(
		".set noreorder\n\t"
		"tlbp\n\t"
		".set reorder");
}

static inline void tlb_read(void)
{
#if MIPS34K_MISSED_ITLB_WAR
	int res = 0;

	__asm__ __volatile__(
	"	.set	push					\n"
	"	.set	noreorder				\n"
	"	.set	noat					\n"
	"	.set	mips32r2				\n"
	"	.word	0x41610001		# dvpe $1	\n"
	"	move	%0, $1					\n"
	"	ehb						\n"
	"	.set	pop					\n"
	: "=r" (res));

	instruction_hazard();
#endif

	__asm__ __volatile__(
		".set noreorder\n\t"
		"tlbr\n\t"
		".set reorder");

#if MIPS34K_MISSED_ITLB_WAR
	if ((res & _ULCAST_(1)))
		__asm__ __volatile__(
		"	.set	push				\n"
		"	.set	noreorder			\n"
		"	.set	noat				\n"
		"	.set	mips32r2			\n"
		"	.word	0x41600021	# evpe		\n"
		"	ehb					\n"
		"	.set	pop				\n");
#endif
}

static inline void tlb_write_indexed(void)
{
	__asm__ __volatile__(
		".set noreorder\n\t"
		"tlbwi\n\t"
		".set reorder");
}

static inline void tlb_write_random(void)
{
	__asm__ __volatile__(
		".set noreorder\n\t"
		"tlbwr\n\t"
		".set reorder");
}

/*
 * Manipulate bits in a c0 register.
 */
#ifndef CONFIG_MIPS_MT_SMTC
/*
 * SMTC Linux requires shutting-down microthread scheduling
 * during CP0 register read-modify-write sequences.
 */
#define __BUILD_SET_C0(name)					\
static inline unsigned int					\
set_c0_##name(unsigned int set)					\
{								\
	unsigned int res, new;					\
								\
	res = read_c0_##name();					\
	new = res | set;					\
	write_c0_##name(new);					\
								\
	return res;						\
}								\
								\
static inline unsigned int					\
clear_c0_##name(unsigned int clear)				\
{								\
	unsigned int res, new;					\
								\
	res = read_c0_##name();					\
	new = res & ~clear;					\
	write_c0_##name(new);					\
								\
	return res;						\
}								\
								\
static inline unsigned int					\
change_c0_##name(unsigned int change, unsigned int val)		\
{								\
	unsigned int res, new;					\
								\
	res = read_c0_##name();					\
	new = res & ~change;					\
	new |= (val & change);					\
	write_c0_##name(new);					\
								\
	return res;						\
}

#else /* SMTC versions that manage MT scheduling */

#include <linux/irqflags.h>

/*
 * This is a duplicate of dmt() in mipsmtregs.h to avoid problems with
 * header file recursion.
 */
static inline unsigned int __dmt(void)
{
	int res;

	__asm__ __volatile__(
	"	.set	push						\n"
	"	.set	mips32r2					\n"
	"	.set	noat						\n"
	"	.word	0x41610BC1			# dmt $1	\n"
	"	ehb							\n"
	"	move	%0, $1						\n"
	"	.set	pop						\n"
	: "=r" (res));

	instruction_hazard();

	return res;
}

#define __VPECONTROL_TE_SHIFT	15
#define __VPECONTROL_TE		(1UL << __VPECONTROL_TE_SHIFT)

#define __EMT_ENABLE		__VPECONTROL_TE

static inline void __emt(unsigned int previous)
{
	if ((previous & __EMT_ENABLE))
		__asm__ __volatile__(
		"	.set	mips32r2				\n"
		"	.word	0x41600be1		# emt		\n"
		"	ehb						\n"
		"	.set	mips0					\n");
}

static inline void __ehb(void)
{
	__asm__ __volatile__(
	"	.set	mips32r2					\n"
	"	ehb							\n"		"	.set	mips0						\n");
}

/*
 * Note that local_irq_save/restore affect TC-specific IXMT state,
 * not Status.IE as in non-SMTC kernel.
 */

#define __BUILD_SET_C0(name)					\
static inline unsigned int					\
set_c0_##name(unsigned int set)					\
{								\
	unsigned int res;					\
	unsigned int new;					\
	unsigned int omt;					\
	unsigned long flags;					\
								\
	local_irq_save(flags);					\
	omt = __dmt();						\
	res = read_c0_##name();					\
	new = res | set;					\
	write_c0_##name(new);					\
	__emt(omt);						\
	local_irq_restore(flags);				\
								\
	return res;						\
}								\
								\
static inline unsigned int					\
clear_c0_##name(unsigned int clear)				\
{								\
	unsigned int res;					\
	unsigned int new;					\
	unsigned int omt;					\
	unsigned long flags;					\
								\
	local_irq_save(flags);					\
	omt = __dmt();						\
	res = read_c0_##name();					\
	new = res & ~clear;					\
	write_c0_##name(new);					\
	__emt(omt);						\
	local_irq_restore(flags);				\
								\
	return res;						\
}								\
								\
static inline unsigned int					\
change_c0_##name(unsigned int change, unsigned int newbits)	\
{								\
	unsigned int res;					\
	unsigned int new;					\
	unsigned int omt;					\
	unsigned long flags;					\
								\
	local_irq_save(flags);					\
								\
	omt = __dmt();						\
	res = read_c0_##name();					\
	new = res & ~change;					\
	new |= (newbits & change);				\
	write_c0_##name(new);					\
	__emt(omt);						\
	local_irq_restore(flags);				\
								\
	return res;						\
}
#endif

__BUILD_SET_C0(status)
__BUILD_SET_C0(cause)
__BUILD_SET_C0(config)
__BUILD_SET_C0(intcontrol)
__BUILD_SET_C0(intctl)
__BUILD_SET_C0(srsmap)

#endif /* !__ASSEMBLY__ */

#endif /* _ASM_MIPSREGS_H */