aboutsummaryrefslogtreecommitdiff
path: root/arch/sparc/kernel/pci_schizo.c
blob: 45d9dba1ba117a9d652727f9968dc13ee690b7cd (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
/* pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support.
 *
 * Copyright (C) 2001, 2002, 2003, 2007, 2008 David S. Miller (davem@davemloft.net)
 */

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/of_device.h>

#include <asm/iommu.h>
#include <asm/irq.h>
#include <asm/pstate.h>
#include <asm/prom.h>
#include <asm/upa.h>

#include "pci_impl.h"
#include "iommu_common.h"

#define DRIVER_NAME	"schizo"
#define PFX		DRIVER_NAME ": "

/* This is a convention that at least Excalibur and Merlin
 * follow.  I suppose the SCHIZO used in Starcat and friends
 * will do similar.
 *
 * The only way I could see this changing is if the newlink
 * block requires more space in Schizo's address space than
 * they predicted, thus requiring an address space reorg when
 * the newer Schizo is taped out.
 */

/* Streaming buffer control register. */
#define SCHIZO_STRBUF_CTRL_LPTR    0x00000000000000f0UL /* LRU Lock Pointer */
#define SCHIZO_STRBUF_CTRL_LENAB   0x0000000000000008UL /* LRU Lock Enable */
#define SCHIZO_STRBUF_CTRL_RRDIS   0x0000000000000004UL /* Rerun Disable */
#define SCHIZO_STRBUF_CTRL_DENAB   0x0000000000000002UL /* Diagnostic Mode Enable */
#define SCHIZO_STRBUF_CTRL_ENAB    0x0000000000000001UL /* Streaming Buffer Enable */

/* IOMMU control register. */
#define SCHIZO_IOMMU_CTRL_RESV     0xfffffffff9000000UL /* Reserved                      */
#define SCHIZO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL /* Translation Error Status      */
#define SCHIZO_IOMMU_CTRL_XLTEERR  0x0000000001000000UL /* Translation Error encountered */
#define SCHIZO_IOMMU_CTRL_LCKEN    0x0000000000800000UL /* Enable translation locking    */
#define SCHIZO_IOMMU_CTRL_LCKPTR   0x0000000000780000UL /* Translation lock pointer      */
#define SCHIZO_IOMMU_CTRL_TSBSZ    0x0000000000070000UL /* TSB Size                      */
#define SCHIZO_IOMMU_TSBSZ_1K      0x0000000000000000UL /* TSB Table 1024 8-byte entries */
#define SCHIZO_IOMMU_TSBSZ_2K      0x0000000000010000UL /* TSB Table 2048 8-byte entries */
#define SCHIZO_IOMMU_TSBSZ_4K      0x0000000000020000UL /* TSB Table 4096 8-byte entries */
#define SCHIZO_IOMMU_TSBSZ_8K      0x0000000000030000UL /* TSB Table 8192 8-byte entries */
#define SCHIZO_IOMMU_TSBSZ_16K     0x0000000000040000UL /* TSB Table 16k 8-byte entries  */
#define SCHIZO_IOMMU_TSBSZ_32K     0x0000000000050000UL /* TSB Table 32k 8-byte entries  */
#define SCHIZO_IOMMU_TSBSZ_64K     0x0000000000060000UL /* TSB Table 64k 8-byte entries  */
#define SCHIZO_IOMMU_TSBSZ_128K    0x0000000000070000UL /* TSB Table 128k 8-byte entries */
#define SCHIZO_IOMMU_CTRL_RESV2    0x000000000000fff8UL /* Reserved                      */
#define SCHIZO_IOMMU_CTRL_TBWSZ    0x0000000000000004UL /* Assumed page size, 0=8k 1=64k */
#define SCHIZO_IOMMU_CTRL_DENAB    0x0000000000000002UL /* Diagnostic mode enable        */
#define SCHIZO_IOMMU_CTRL_ENAB     0x0000000000000001UL /* IOMMU Enable                  */

/* Schizo config space address format is nearly identical to
 * that of PSYCHO:
 *
 *  32             24 23 16 15    11 10       8 7   2  1 0
 * ---------------------------------------------------------
 * |0 0 0 0 0 0 0 0 0| bus | device | function | reg | 0 0 |
 * ---------------------------------------------------------
 */
#define SCHIZO_CONFIG_BASE(PBM)	((PBM)->config_space)
#define SCHIZO_CONFIG_ENCODE(BUS, DEVFN, REG)	\
	(((unsigned long)(BUS)   << 16) |	\
	 ((unsigned long)(DEVFN) << 8)  |	\
	 ((unsigned long)(REG)))

static void *schizo_pci_config_mkaddr(struct pci_pbm_info *pbm,
				      unsigned char bus,
				      unsigned int devfn,
				      int where)
{
	if (!pbm)
		return NULL;
	bus -= pbm->pci_first_busno;
	return (void *)
		(SCHIZO_CONFIG_BASE(pbm) |
		 SCHIZO_CONFIG_ENCODE(bus, devfn, where));
}

/* SCHIZO error handling support. */
enum schizo_error_type {
	UE_ERR, CE_ERR, PCI_ERR, SAFARI_ERR
};

static DEFINE_SPINLOCK(stc_buf_lock);
static unsigned long stc_error_buf[128];
static unsigned long stc_tag_buf[16];
static unsigned long stc_line_buf[16];

#define SCHIZO_UE_INO		0x30 /* Uncorrectable ECC error */
#define SCHIZO_CE_INO		0x31 /* Correctable ECC error */
#define SCHIZO_PCIERR_A_INO	0x32 /* PBM A PCI bus error */
#define SCHIZO_PCIERR_B_INO	0x33 /* PBM B PCI bus error */
#define SCHIZO_SERR_INO		0x34 /* Safari interface error */

#define SCHIZO_STC_ERR	0xb800UL /* --> 0xba00 */
#define SCHIZO_STC_TAG	0xba00UL /* --> 0xba80 */
#define SCHIZO_STC_LINE	0xbb00UL /* --> 0xbb80 */

#define SCHIZO_STCERR_WRITE	0x2UL
#define SCHIZO_STCERR_READ	0x1UL

#define SCHIZO_STCTAG_PPN	0x3fffffff00000000UL
#define SCHIZO_STCTAG_VPN	0x00000000ffffe000UL
#define SCHIZO_STCTAG_VALID	0x8000000000000000UL
#define SCHIZO_STCTAG_READ	0x4000000000000000UL

#define SCHIZO_STCLINE_LINDX	0x0000000007800000UL
#define SCHIZO_STCLINE_SPTR	0x000000000007e000UL
#define SCHIZO_STCLINE_LADDR	0x0000000000001fc0UL
#define SCHIZO_STCLINE_EPTR	0x000000000000003fUL
#define SCHIZO_STCLINE_VALID	0x0000000000600000UL
#define SCHIZO_STCLINE_FOFN	0x0000000000180000UL

static void __schizo_check_stc_error_pbm(struct pci_pbm_info *pbm,
					 enum schizo_error_type type)
{
	struct strbuf *strbuf = &pbm->stc;
	unsigned long regbase = pbm->pbm_regs;
	unsigned long err_base, tag_base, line_base;
	u64 control;
	int i;

	err_base = regbase + SCHIZO_STC_ERR;
	tag_base = regbase + SCHIZO_STC_TAG;
	line_base = regbase + SCHIZO_STC_LINE;

	spin_lock(&stc_buf_lock);

	/* This is __REALLY__ dangerous.  When we put the
	 * streaming buffer into diagnostic mode to probe
	 * it's tags and error status, we _must_ clear all
	 * of the line tag valid bits before re-enabling
	 * the streaming buffer.  If any dirty data lives
	 * in the STC when we do this, we will end up
	 * invalidating it before it has a chance to reach
	 * main memory.
	 */
	control = upa_readq(strbuf->strbuf_control);
	upa_writeq((control | SCHIZO_STRBUF_CTRL_DENAB),
		   strbuf->strbuf_control);
	for (i = 0; i < 128; i++) {
		unsigned long val;

		val = upa_readq(err_base + (i * 8UL));
		upa_writeq(0UL, err_base + (i * 8UL));
		stc_error_buf[i] = val;
	}
	for (i = 0; i < 16; i++) {
		stc_tag_buf[i] = upa_readq(tag_base + (i * 8UL));
		stc_line_buf[i] = upa_readq(line_base + (i * 8UL));
		upa_writeq(0UL, tag_base + (i * 8UL));
		upa_writeq(0UL, line_base + (i * 8UL));
	}

	/* OK, state is logged, exit diagnostic mode. */
	upa_writeq(control, strbuf->strbuf_control);

	for (i = 0; i < 16; i++) {
		int j, saw_error, first, last;

		saw_error = 0;
		first = i * 8;
		last = first + 8;
		for (j = first; j < last; j++) {
			unsigned long errval = stc_error_buf[j];
			if (errval != 0) {
				saw_error++;
				printk("%s: STC_ERR(%d)[wr(%d)rd(%d)]\n",
				       pbm->name,
				       j,
				       (errval & SCHIZO_STCERR_WRITE) ? 1 : 0,
				       (errval & SCHIZO_STCERR_READ) ? 1 : 0);
			}
		}
		if (saw_error != 0) {
			unsigned long tagval = stc_tag_buf[i];
			unsigned long lineval = stc_line_buf[i];
			printk("%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)R(%d)]\n",
			       pbm->name,
			       i,
			       ((tagval & SCHIZO_STCTAG_PPN) >> 19UL),
			       (tagval & SCHIZO_STCTAG_VPN),
			       ((tagval & SCHIZO_STCTAG_VALID) ? 1 : 0),
			       ((tagval & SCHIZO_STCTAG_READ) ? 1 : 0));

			/* XXX Should spit out per-bank error information... -DaveM */
			printk("%s: STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)"
			       "V(%d)FOFN(%d)]\n",
			       pbm->name,
			       i,
			       ((lineval & SCHIZO_STCLINE_LINDX) >> 23UL),
			       ((lineval & SCHIZO_STCLINE_SPTR) >> 13UL),
			       ((lineval & SCHIZO_STCLINE_LADDR) >> 6UL),
			       ((lineval & SCHIZO_STCLINE_EPTR) >> 0UL),
			       ((lineval & SCHIZO_STCLINE_VALID) ? 1 : 0),
			       ((lineval & SCHIZO_STCLINE_FOFN) ? 1 : 0));
		}
	}

	spin_unlock(&stc_buf_lock);
}

/* IOMMU is per-PBM in Schizo, so interrogate both for anonymous
 * controller level errors.
 */

#define SCHIZO_IOMMU_TAG	0xa580UL
#define SCHIZO_IOMMU_DATA	0xa600UL

#define SCHIZO_IOMMU_TAG_CTXT	0x0000001ffe000000UL
#define SCHIZO_IOMMU_TAG_ERRSTS	0x0000000001800000UL
#define SCHIZO_IOMMU_TAG_ERR	0x0000000000400000UL
#define SCHIZO_IOMMU_TAG_WRITE	0x0000000000200000UL
#define SCHIZO_IOMMU_TAG_STREAM	0x0000000000100000UL
#define SCHIZO_IOMMU_TAG_SIZE	0x0000000000080000UL
#define SCHIZO_IOMMU_TAG_VPAGE	0x000000000007ffffUL

#define SCHIZO_IOMMU_DATA_VALID	0x0000000100000000UL
#define SCHIZO_IOMMU_DATA_CACHE	0x0000000040000000UL
#define SCHIZO_IOMMU_DATA_PPAGE	0x000000003fffffffUL

static void schizo_check_iommu_error_pbm(struct pci_pbm_info *pbm,
					 enum schizo_error_type type)
{
	struct iommu *iommu = pbm->iommu;
	unsigned long iommu_tag[16];
	unsigned long iommu_data[16];
	unsigned long flags;
	u64 control;
	int i;

	spin_lock_irqsave(&iommu->lock, flags);
	control = upa_readq(iommu->iommu_control);
	if (control & SCHIZO_IOMMU_CTRL_XLTEERR) {
		unsigned long base;
		char *type_string;

		/* Clear the error encountered bit. */
		control &= ~SCHIZO_IOMMU_CTRL_XLTEERR;
		upa_writeq(control, iommu->iommu_control);

		switch((control & SCHIZO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
		case 0:
			type_string = "Protection Error";
			break;
		case 1:
			type_string = "Invalid Error";
			break;
		case 2:
			type_string = "TimeOut Error";
			break;
		case 3:
		default:
			type_string = "ECC Error";
			break;
		};
		printk("%s: IOMMU Error, type[%s]\n",
		       pbm->name, type_string);

		/* Put the IOMMU into diagnostic mode and probe
		 * it's TLB for entries with error status.
		 *
		 * It is very possible for another DVMA to occur
		 * while we do this probe, and corrupt the system
		 * further.  But we are so screwed at this point
		 * that we are likely to crash hard anyways, so
		 * get as much diagnostic information to the
		 * console as we can.
		 */
		upa_writeq(control | SCHIZO_IOMMU_CTRL_DENAB,
			   iommu->iommu_control);

		base = pbm->pbm_regs;

		for (i = 0; i < 16; i++) {
			iommu_tag[i] =
				upa_readq(base + SCHIZO_IOMMU_TAG + (i * 8UL));
			iommu_data[i] =
				upa_readq(base + SCHIZO_IOMMU_DATA + (i * 8UL));

			/* Now clear out the entry. */
			upa_writeq(0, base + SCHIZO_IOMMU_TAG + (i * 8UL));
			upa_writeq(0, base + SCHIZO_IOMMU_DATA + (i * 8UL));
		}

		/* Leave diagnostic mode. */
		upa_writeq(control, iommu->iommu_control);

		for (i = 0; i < 16; i++) {
			unsigned long tag, data;

			tag = iommu_tag[i];
			if (!(tag & SCHIZO_IOMMU_TAG_ERR))
				continue;

			data = iommu_data[i];
			switch((tag & SCHIZO_IOMMU_TAG_ERRSTS) >> 23UL) {
			case 0:
				type_string = "Protection Error";
				break;
			case 1:
				type_string = "Invalid Error";
				break;
			case 2:
				type_string = "TimeOut Error";
				break;
			case 3:
			default:
				type_string = "ECC Error";
				break;
			};
			printk("%s: IOMMU TAG(%d)[error(%s) ctx(%x) wr(%d) str(%d) "
			       "sz(%dK) vpg(%08lx)]\n",
			       pbm->name, i, type_string,
			       (int)((tag & SCHIZO_IOMMU_TAG_CTXT) >> 25UL),
			       ((tag & SCHIZO_IOMMU_TAG_WRITE) ? 1 : 0),
			       ((tag & SCHIZO_IOMMU_TAG_STREAM) ? 1 : 0),
			       ((tag & SCHIZO_IOMMU_TAG_SIZE) ? 64 : 8),
			       (tag & SCHIZO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
			printk("%s: IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]\n",
			       pbm->name, i,
			       ((data & SCHIZO_IOMMU_DATA_VALID) ? 1 : 0),
			       ((data & SCHIZO_IOMMU_DATA_CACHE) ? 1 : 0),
			       (data & SCHIZO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT);
		}
	}
	if (pbm->stc.strbuf_enabled)
		__schizo_check_stc_error_pbm(pbm, type);
	spin_unlock_irqrestore(&iommu->lock, flags);
}

static void schizo_check_iommu_error(struct pci_pbm_info *pbm,
				     enum schizo_error_type type)
{
	schizo_check_iommu_error_pbm(pbm, type);
	if (pbm->sibling)
		schizo_check_iommu_error_pbm(pbm->sibling, type);
}

/* Uncorrectable ECC error status gathering. */
#define SCHIZO_UE_AFSR	0x10030UL
#define SCHIZO_UE_AFAR	0x10038UL

#define SCHIZO_UEAFSR_PPIO	0x8000000000000000UL /* Safari */
#define SCHIZO_UEAFSR_PDRD	0x4000000000000000UL /* Safari/Tomatillo */
#define SCHIZO_UEAFSR_PDWR	0x2000000000000000UL /* Safari */
#define SCHIZO_UEAFSR_SPIO	0x1000000000000000UL /* Safari */
#define SCHIZO_UEAFSR_SDMA	0x0800000000000000UL /* Safari/Tomatillo */
#define SCHIZO_UEAFSR_ERRPNDG	0x0300000000000000UL /* Safari */
#define SCHIZO_UEAFSR_BMSK	0x000003ff00000000UL /* Safari */
#define SCHIZO_UEAFSR_QOFF	0x00000000c0000000UL /* Safari/Tomatillo */
#define SCHIZO_UEAFSR_AID	0x000000001f000000UL /* Safari/Tomatillo */
#define SCHIZO_UEAFSR_PARTIAL	0x0000000000800000UL /* Safari */
#define SCHIZO_UEAFSR_OWNEDIN	0x0000000000400000UL /* Safari */
#define SCHIZO_UEAFSR_MTAGSYND	0x00000000000f0000UL /* Safari */
#define SCHIZO_UEAFSR_MTAG	0x000000000000e000UL /* Safari */
#define SCHIZO_UEAFSR_ECCSYND	0x00000000000001ffUL /* Safari */

static irqreturn_t schizo_ue_intr(int irq, void *dev_id)
{
	struct pci_pbm_info *pbm = dev_id;
	unsigned long afsr_reg = pbm->controller_regs + SCHIZO_UE_AFSR;
	unsigned long afar_reg = pbm->controller_regs + SCHIZO_UE_AFAR;
	unsigned long afsr, afar, error_bits;
	int reported, limit;

	/* Latch uncorrectable error status. */
	afar = upa_readq(afar_reg);

	/* If either of the error pending bits are set in the
	 * AFSR, the error status is being actively updated by
	 * the hardware and we must re-read to get a clean value.
	 */
	limit = 1000;
	do {
		afsr = upa_readq(afsr_reg);
	} while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);

	/* Clear the primary/secondary error status bits. */
	error_bits = afsr &
		(SCHIZO_UEAFSR_PPIO | SCHIZO_UEAFSR_PDRD | SCHIZO_UEAFSR_PDWR |
		 SCHIZO_UEAFSR_SPIO | SCHIZO_UEAFSR_SDMA);
	if (!error_bits)
		return IRQ_NONE;
	upa_writeq(error_bits, afsr_reg);

	/* Log the error. */
	printk("%s: Uncorrectable Error, primary error type[%s]\n",
	       pbm->name,
	       (((error_bits & SCHIZO_UEAFSR_PPIO) ?
		 "PIO" :
		 ((error_bits & SCHIZO_UEAFSR_PDRD) ?
		  "DMA Read" :
		  ((error_bits & SCHIZO_UEAFSR_PDWR) ?
		   "DMA Write" : "???")))));
	printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
	       pbm->name,
	       (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
	       (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
	       (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
	printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
	       pbm->name,
	       (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
	       (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
	       (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
	       (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
	       (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
	printk("%s: UE AFAR [%016lx]\n", pbm->name, afar);
	printk("%s: UE Secondary errors [", pbm->name);
	reported = 0;
	if (afsr & SCHIZO_UEAFSR_SPIO) {
		reported++;
		printk("(PIO)");
	}
	if (afsr & SCHIZO_UEAFSR_SDMA) {
		reported++;
		printk("(DMA)");
	}
	if (!reported)
		printk("(none)");
	printk("]\n");

	/* Interrogate IOMMU for error status. */
	schizo_check_iommu_error(pbm, UE_ERR);

	return IRQ_HANDLED;
}

#define SCHIZO_CE_AFSR	0x10040UL
#define SCHIZO_CE_AFAR	0x10048UL

#define SCHIZO_CEAFSR_PPIO	0x8000000000000000UL
#define SCHIZO_CEAFSR_PDRD	0x4000000000000000UL
#define SCHIZO_CEAFSR_PDWR	0x2000000000000000UL
#define SCHIZO_CEAFSR_SPIO	0x1000000000000000UL
#define SCHIZO_CEAFSR_SDMA	0x0800000000000000UL
#define SCHIZO_CEAFSR_ERRPNDG	0x0300000000000000UL
#define SCHIZO_CEAFSR_BMSK	0x000003ff00000000UL
#define SCHIZO_CEAFSR_QOFF	0x00000000c0000000UL
#define SCHIZO_CEAFSR_AID	0x000000001f000000UL
#define SCHIZO_CEAFSR_PARTIAL	0x0000000000800000UL
#define SCHIZO_CEAFSR_OWNEDIN	0x0000000000400000UL
#define SCHIZO_CEAFSR_MTAGSYND	0x00000000000f0000UL
#define SCHIZO_CEAFSR_MTAG	0x000000000000e000UL
#define SCHIZO_CEAFSR_ECCSYND	0x00000000000001ffUL

static irqreturn_t schizo_ce_intr(int irq, void *dev_id)
{
	struct pci_pbm_info *pbm = dev_id;
	unsigned long afsr_reg = pbm->controller_regs + SCHIZO_CE_AFSR;
	unsigned long afar_reg = pbm->controller_regs + SCHIZO_CE_AFAR;
	unsigned long afsr, afar, error_bits;
	int reported, limit;

	/* Latch error status. */
	afar = upa_readq(afar_reg);

	/* If either of the error pending bits are set in the
	 * AFSR, the error status is being actively updated by
	 * the hardware and we must re-read to get a clean value.
	 */
	limit = 1000;
	do {
		afsr = upa_readq(afsr_reg);
	} while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);

	/* Clear primary/secondary error status bits. */
	error_bits = afsr &
		(SCHIZO_CEAFSR_PPIO | SCHIZO_CEAFSR_PDRD | SCHIZO_CEAFSR_PDWR |
		 SCHIZO_CEAFSR_SPIO | SCHIZO_CEAFSR_SDMA);
	if (!error_bits)
		return IRQ_NONE;
	upa_writeq(error_bits, afsr_reg);

	/* Log the error. */
	printk("%s: Correctable Error, primary error type[%s]\n",
	       pbm->name,
	       (((error_bits & SCHIZO_CEAFSR_PPIO) ?
		 "PIO" :
		 ((error_bits & SCHIZO_CEAFSR_PDRD) ?
		  "DMA Read" :
		  ((error_bits & SCHIZO_CEAFSR_PDWR) ?
		   "DMA Write" : "???")))));

	/* XXX Use syndrome and afar to print out module string just like
	 * XXX UDB CE trap handler does... -DaveM
	 */
	printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
	       pbm->name,
	       (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
	       (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
	       (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
	printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
	       pbm->name,
	       (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
	       (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
	       (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
	       (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
	       (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
	printk("%s: CE AFAR [%016lx]\n", pbm->name, afar);
	printk("%s: CE Secondary errors [", pbm->name);
	reported = 0;
	if (afsr & SCHIZO_CEAFSR_SPIO) {
		reported++;
		printk("(PIO)");
	}
	if (afsr & SCHIZO_CEAFSR_SDMA) {
		reported++;
		printk("(DMA)");
	}
	if (!reported)
		printk("(none)");
	printk("]\n");

	return IRQ_HANDLED;
}

#define SCHIZO_PCI_AFSR	0x2010UL
#define SCHIZO_PCI_AFAR	0x2018UL

#define SCHIZO_PCIAFSR_PMA	0x8000000000000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_PTA	0x4000000000000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_PRTRY	0x2000000000000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_PPERR	0x1000000000000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_PTTO	0x0800000000000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_PUNUS	0x0400000000000000UL /* Schizo */
#define SCHIZO_PCIAFSR_SMA	0x0200000000000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_STA	0x0100000000000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_SRTRY	0x0080000000000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_SPERR	0x0040000000000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_STTO	0x0020000000000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_SUNUS	0x0010000000000000UL /* Schizo */
#define SCHIZO_PCIAFSR_BMSK	0x000003ff00000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_BLK	0x0000000080000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_CFG	0x0000000040000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_MEM	0x0000000020000000UL /* Schizo/Tomatillo */
#define SCHIZO_PCIAFSR_IO	0x0000000010000000UL /* Schizo/Tomatillo */

#define SCHIZO_PCI_CTRL		(0x2000UL)
#define SCHIZO_PCICTRL_BUS_UNUS	(1UL << 63UL) /* Safari */
#define SCHIZO_PCICTRL_DTO_INT	(1UL << 61UL) /* Tomatillo */
#define SCHIZO_PCICTRL_ARB_PRIO (0x1ff << 52UL) /* Tomatillo */
#define SCHIZO_PCICTRL_ESLCK	(1UL << 51UL) /* Safari */
#define SCHIZO_PCICTRL_ERRSLOT	(7UL << 48UL) /* Safari */
#define SCHIZO_PCICTRL_TTO_ERR	(1UL << 38UL) /* Safari/Tomatillo */
#define SCHIZO_PCICTRL_RTRY_ERR	(1UL << 37UL) /* Safari/Tomatillo */
#define SCHIZO_PCICTRL_DTO_ERR	(1UL << 36UL) /* Safari/Tomatillo */
#define SCHIZO_PCICTRL_SBH_ERR	(1UL << 35UL) /* Safari */
#define SCHIZO_PCICTRL_SERR	(1UL << 34UL) /* Safari/Tomatillo */
#define SCHIZO_PCICTRL_PCISPD	(1UL << 33UL) /* Safari */
#define SCHIZO_PCICTRL_MRM_PREF	(1UL << 30UL) /* Tomatillo */
#define SCHIZO_PCICTRL_RDO_PREF	(1UL << 29UL) /* Tomatillo */
#define SCHIZO_PCICTRL_RDL_PREF	(1UL << 28UL) /* Tomatillo */
#define SCHIZO_PCICTRL_PTO	(3UL << 24UL) /* Safari/Tomatillo */
#define SCHIZO_PCICTRL_PTO_SHIFT 24UL
#define SCHIZO_PCICTRL_TRWSW	(7UL << 21UL) /* Tomatillo */
#define SCHIZO_PCICTRL_F_TGT_A	(1UL << 20UL) /* Tomatillo */
#define SCHIZO_PCICTRL_S_DTO_INT (1UL << 19UL) /* Safari */
#define SCHIZO_PCICTRL_F_TGT_RT	(1UL << 19UL) /* Tomatillo */
#define SCHIZO_PCICTRL_SBH_INT	(1UL << 18UL) /* Safari */
#define SCHIZO_PCICTRL_T_DTO_INT (1UL << 18UL) /* Tomatillo */
#define SCHIZO_PCICTRL_EEN	(1UL << 17UL) /* Safari/Tomatillo */
#define SCHIZO_PCICTRL_PARK	(1UL << 16UL) /* Safari/Tomatillo */
#define SCHIZO_PCICTRL_PCIRST	(1UL <<  8UL) /* Safari */
#define SCHIZO_PCICTRL_ARB_S	(0x3fUL << 0UL) /* Safari */
#define SCHIZO_PCICTRL_ARB_T	(0xffUL << 0UL) /* Tomatillo */

static irqreturn_t schizo_pcierr_intr_other(struct pci_pbm_info *pbm)
{
	unsigned long csr_reg, csr, csr_error_bits;
	irqreturn_t ret = IRQ_NONE;
	u16 stat;

	csr_reg = pbm->pbm_regs + SCHIZO_PCI_CTRL;
	csr = upa_readq(csr_reg);
	csr_error_bits =
		csr & (SCHIZO_PCICTRL_BUS_UNUS |
		       SCHIZO_PCICTRL_TTO_ERR |
		       SCHIZO_PCICTRL_RTRY_ERR |
		       SCHIZO_PCICTRL_DTO_ERR |
		       SCHIZO_PCICTRL_SBH_ERR |
		       SCHIZO_PCICTRL_SERR);
	if (csr_error_bits) {
		/* Clear the errors.  */
		upa_writeq(csr, csr_reg);

		/* Log 'em.  */
		if (csr_error_bits & SCHIZO_PCICTRL_BUS_UNUS)
			printk("%s: Bus unusable error asserted.\n",
			       pbm->name);
		if (csr_error_bits & SCHIZO_PCICTRL_TTO_ERR)
			printk("%s: PCI TRDY# timeout error asserted.\n",
			       pbm->name);
		if (csr_error_bits & SCHIZO_PCICTRL_RTRY_ERR)
			printk("%s: PCI excessive retry error asserted.\n",
			       pbm->name);
		if (csr_error_bits & SCHIZO_PCICTRL_DTO_ERR)
			printk("%s: PCI discard timeout error asserted.\n",
			       pbm->name);
		if (csr_error_bits & SCHIZO_PCICTRL_SBH_ERR)
			printk("%s: PCI streaming byte hole error asserted.\n",
			       pbm->name);
		if (csr_error_bits & SCHIZO_PCICTRL_SERR)
			printk("%s: PCI SERR signal asserted.\n",
			       pbm->name);
		ret = IRQ_HANDLED;
	}
	pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat);
	if (stat & (PCI_STATUS_PARITY |
		    PCI_STATUS_SIG_TARGET_ABORT |
		    PCI_STATUS_REC_TARGET_ABORT |
		    PCI_STATUS_REC_MASTER_ABORT |
		    PCI_STATUS_SIG_SYSTEM_ERROR)) {
		printk("%s: PCI bus error, PCI_STATUS[%04x]\n",
		       pbm->name, stat);
		pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff);
		ret = IRQ_HANDLED;
	}
	return ret;
}

static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id)
{
	struct pci_pbm_info *pbm = dev_id;
	unsigned long afsr_reg, afar_reg, base;
	unsigned long afsr, afar, error_bits;
	int reported;

	base = pbm->pbm_regs;

	afsr_reg = base + SCHIZO_PCI_AFSR;
	afar_reg = base + SCHIZO_PCI_AFAR;

	/* Latch error status. */
	afar = upa_readq(afar_reg);
	afsr = upa_readq(afsr_reg);

	/* Clear primary/secondary error status bits. */
	error_bits = afsr &
		(SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
		 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
		 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
		 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
		 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
		 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS);
	if (!error_bits)
		return schizo_pcierr_intr_other(pbm);
	upa_writeq(error_bits, afsr_reg);

	/* Log the error. */
	printk("%s: PCI Error, primary error type[%s]\n",
	       pbm->name,
	       (((error_bits & SCHIZO_PCIAFSR_PMA) ?
		 "Master Abort" :
		 ((error_bits & SCHIZO_PCIAFSR_PTA) ?
		  "Target Abort" :
		  ((error_bits & SCHIZO_PCIAFSR_PRTRY) ?
		   "Excessive Retries" :
		   ((error_bits & SCHIZO_PCIAFSR_PPERR) ?
		    "Parity Error" :
		    ((error_bits & SCHIZO_PCIAFSR_PTTO) ?
		     "Timeout" :
		     ((error_bits & SCHIZO_PCIAFSR_PUNUS) ?
		      "Bus Unusable" : "???"))))))));
	printk("%s: bytemask[%04lx] was_block(%d) space(%s)\n",
	       pbm->name,
	       (afsr & SCHIZO_PCIAFSR_BMSK) >> 32UL,
	       (afsr & SCHIZO_PCIAFSR_BLK) ? 1 : 0,
	       ((afsr & SCHIZO_PCIAFSR_CFG) ?
		"Config" :
		((afsr & SCHIZO_PCIAFSR_MEM) ?
		 "Memory" :
		 ((afsr & SCHIZO_PCIAFSR_IO) ?
		  "I/O" : "???"))));
	printk("%s: PCI AFAR [%016lx]\n",
	       pbm->name, afar);
	printk("%s: PCI Secondary errors [",
	       pbm->name);
	reported = 0;
	if (afsr & SCHIZO_PCIAFSR_SMA) {
		reported++;
		printk("(Master Abort)");
	}
	if (afsr & SCHIZO_PCIAFSR_STA) {
		reported++;
		printk("(Target Abort)");
	}
	if (afsr & SCHIZO_PCIAFSR_SRTRY) {
		reported++;
		printk("(Excessive Retries)");
	}
	if (afsr & SCHIZO_PCIAFSR_SPERR) {
		reported++;
		printk("(Parity Error)");
	}
	if (afsr & SCHIZO_PCIAFSR_STTO) {
		reported++;
		printk("(Timeout)");
	}
	if (afsr & SCHIZO_PCIAFSR_SUNUS) {
		reported++;
		printk("(Bus Unusable)");
	}
	if (!reported)
		printk("(none)");
	printk("]\n");

	/* For the error types shown, scan PBM's PCI bus for devices
	 * which have logged that error type.
	 */

	/* If we see a Target Abort, this could be the result of an
	 * IOMMU translation error of some sort.  It is extremely
	 * useful to log this information as usually it indicates
	 * a bug in the IOMMU support code or a PCI device driver.
	 */
	if (error_bits & (SCHIZO_PCIAFSR_PTA | SCHIZO_PCIAFSR_STA)) {
		schizo_check_iommu_error(pbm, PCI_ERR);
		pci_scan_for_target_abort(pbm, pbm->pci_bus);
	}
	if (error_bits & (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_SMA))
		pci_scan_for_master_abort(pbm, pbm->pci_bus);

	/* For excessive retries, PSYCHO/PBM will abort the device
	 * and there is no way to specifically check for excessive
	 * retries in the config space status registers.  So what
	 * we hope is that we'll catch it via the master/target
	 * abort events.
	 */

	if (error_bits & (SCHIZO_PCIAFSR_PPERR | SCHIZO_PCIAFSR_SPERR))
		pci_scan_for_parity_error(pbm, pbm->pci_bus);

	return IRQ_HANDLED;
}

#define SCHIZO_SAFARI_ERRLOG	0x10018UL

#define SAFARI_ERRLOG_ERROUT	0x8000000000000000UL

#define BUS_ERROR_BADCMD	0x4000000000000000UL /* Schizo/Tomatillo */
#define BUS_ERROR_SSMDIS	0x2000000000000000UL /* Safari */
#define BUS_ERROR_BADMA		0x1000000000000000UL /* Safari */
#define BUS_ERROR_BADMB		0x0800000000000000UL /* Safari */
#define BUS_ERROR_BADMC		0x0400000000000000UL /* Safari */
#define BUS_ERROR_SNOOP_GR	0x0000000000200000UL /* Tomatillo */
#define BUS_ERROR_SNOOP_PCI	0x0000000000100000UL /* Tomatillo */
#define BUS_ERROR_SNOOP_RD	0x0000000000080000UL /* Tomatillo */
#define BUS_ERROR_SNOOP_RDS	0x0000000000020000UL /* Tomatillo */
#define BUS_ERROR_SNOOP_RDSA	0x0000000000010000UL /* Tomatillo */
#define BUS_ERROR_SNOOP_OWN	0x0000000000008000UL /* Tomatillo */
#define BUS_ERROR_SNOOP_RDO	0x0000000000004000UL /* Tomatillo */
#define BUS_ERROR_CPU1PS	0x0000000000002000UL /* Safari */
#define BUS_ERROR_WDATA_PERR	0x0000000000002000UL /* Tomatillo */
#define BUS_ERROR_CPU1PB	0x0000000000001000UL /* Safari */
#define BUS_ERROR_CTRL_PERR	0x0000000000001000UL /* Tomatillo */
#define BUS_ERROR_CPU0PS	0x0000000000000800UL /* Safari */
#define BUS_ERROR_SNOOP_ERR	0x0000000000000800UL /* Tomatillo */
#define BUS_ERROR_CPU0PB	0x0000000000000400UL /* Safari */
#define BUS_ERROR_JBUS_ILL_B	0x0000000000000400UL /* Tomatillo */
#define BUS_ERROR_CIQTO		0x0000000000000200UL /* Safari */
#define BUS_ERROR_LPQTO		0x0000000000000100UL /* Safari */
#define BUS_ERROR_JBUS_ILL_C	0x0000000000000100UL /* Tomatillo */
#define BUS_ERROR_SFPQTO	0x0000000000000080UL /* Safari */
#define BUS_ERROR_UFPQTO	0x0000000000000040UL /* Safari */
#define BUS_ERROR_RD_PERR	0x0000000000000040UL /* Tomatillo */
#define BUS_ERROR_APERR		0x0000000000000020UL /* Safari/Tomatillo */
#define BUS_ERROR_UNMAP		0x0000000000000010UL /* Safari/Tomatillo */
#define BUS_ERROR_BUSERR	0x0000000000000004UL /* Safari/Tomatillo */
#define BUS_ERROR_TIMEOUT	0x0000000000000002UL /* Safari/Tomatillo */
#define BUS_ERROR_ILL		0x0000000000000001UL /* Safari */

/* We only expect UNMAP errors here.  The rest of the Safari errors
 * are marked fatal and thus cause a system reset.
 */
static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id)
{
	struct pci_pbm_info *pbm = dev_id;
	u64 errlog;

	errlog = upa_readq(pbm->controller_regs + SCHIZO_SAFARI_ERRLOG);
	upa_writeq(errlog & ~(SAFARI_ERRLOG_ERROUT),
		   pbm->controller_regs + SCHIZO_SAFARI_ERRLOG);

	if (!(errlog & BUS_ERROR_UNMAP)) {
		printk("%s: Unexpected Safari/JBUS error interrupt, errlog[%016lx]\n",
		       pbm->name, errlog);

		return IRQ_HANDLED;
	}

	printk("%s: Safari/JBUS interrupt, UNMAPPED error, interrogating IOMMUs.\n",
	       pbm->name);
	schizo_check_iommu_error(pbm, SAFARI_ERR);

	return IRQ_HANDLED;
}

/* Nearly identical to PSYCHO equivalents... */
#define SCHIZO_ECC_CTRL		0x10020UL
#define  SCHIZO_ECCCTRL_EE	 0x8000000000000000UL /* Enable ECC Checking */
#define  SCHIZO_ECCCTRL_UE	 0x4000000000000000UL /* Enable UE Interrupts */
#define  SCHIZO_ECCCTRL_CE	 0x2000000000000000UL /* Enable CE INterrupts */

#define SCHIZO_SAFARI_ERRCTRL	0x10008UL
#define  SCHIZO_SAFERRCTRL_EN	 0x8000000000000000UL
#define SCHIZO_SAFARI_IRQCTRL	0x10010UL
#define  SCHIZO_SAFIRQCTRL_EN	 0x8000000000000000UL

static int pbm_routes_this_ino(struct pci_pbm_info *pbm, u32 ino)
{
	ino &= IMAP_INO;

	if (pbm->ino_bitmap & (1UL << ino))
		return 1;

	return 0;
}

/* How the Tomatillo IRQs are routed around is pure guesswork here.
 *
 * All the Tomatillo devices I see in prtconf dumps seem to have only
 * a single PCI bus unit attached to it.  It would seem they are separate
 * devices because their PortID (ie. JBUS ID) values are all different
 * and thus the registers are mapped to totally different locations.
 *
 * However, two Tomatillo's look "similar" in that the only difference
 * in their PortID is the lowest bit.
 *
 * So if we were to ignore this lower bit, it certainly looks like two
 * PCI bus units of the same Tomatillo.  I still have not really
 * figured this out...
 */
static void tomatillo_register_error_handlers(struct pci_pbm_info *pbm)
{
	struct of_device *op = of_find_device_by_node(pbm->op->node);
	u64 tmp, err_mask, err_no_mask;
	int err;

	/* Tomatillo IRQ property layout is:
	 * 0: PCIERR
	 * 1: UE ERR
	 * 2: CE ERR
	 * 3: SERR
	 * 4: POWER FAIL?
	 */

	if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {
		err = request_irq(op->irqs[1], schizo_ue_intr, 0,
				  "TOMATILLO_UE", pbm);
		if (err)
			printk(KERN_WARNING "%s: Could not register UE, "
			       "err=%d\n", pbm->name, err);
	}
	if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {
		err = request_irq(op->irqs[2], schizo_ce_intr, 0,
				  "TOMATILLO_CE", pbm);
		if (err)
			printk(KERN_WARNING "%s: Could not register CE, "
			       "err=%d\n", pbm->name, err);
	}
	err = 0;
	if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {
		err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
				  "TOMATILLO_PCIERR", pbm);
	} else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {
		err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
				  "TOMATILLO_PCIERR", pbm);
	}
	if (err)
		printk(KERN_WARNING "%s: Could not register PCIERR, "
		       "err=%d\n", pbm->name, err);

	if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {
		err = request_irq(op->irqs[3], schizo_safarierr_intr, 0,
				  "TOMATILLO_SERR", pbm);
		if (err)
			printk(KERN_WARNING "%s: Could not register SERR, "
			       "err=%d\n", pbm->name, err);
	}

	/* Enable UE and CE interrupts for controller. */
	upa_writeq((SCHIZO_ECCCTRL_EE |
		    SCHIZO_ECCCTRL_UE |
		    SCHIZO_ECCCTRL_CE), pbm->controller_regs + SCHIZO_ECC_CTRL);

	/* Enable PCI Error interrupts and clear error
	 * bits.
	 */
	err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
		    SCHIZO_PCICTRL_TTO_ERR |
		    SCHIZO_PCICTRL_RTRY_ERR |
		    SCHIZO_PCICTRL_SERR |
		    SCHIZO_PCICTRL_EEN);

	err_no_mask = SCHIZO_PCICTRL_DTO_ERR;

	tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);
	tmp |= err_mask;
	tmp &= ~err_no_mask;
	upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);

	err_mask = (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
		    SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
		    SCHIZO_PCIAFSR_PTTO |
		    SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
		    SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
		    SCHIZO_PCIAFSR_STTO);

	upa_writeq(err_mask, pbm->pbm_regs + SCHIZO_PCI_AFSR);

	err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SNOOP_GR |
		    BUS_ERROR_SNOOP_PCI | BUS_ERROR_SNOOP_RD |
		    BUS_ERROR_SNOOP_RDS | BUS_ERROR_SNOOP_RDSA |
		    BUS_ERROR_SNOOP_OWN | BUS_ERROR_SNOOP_RDO |
		    BUS_ERROR_WDATA_PERR | BUS_ERROR_CTRL_PERR |
		    BUS_ERROR_SNOOP_ERR | BUS_ERROR_JBUS_ILL_B |
		    BUS_ERROR_JBUS_ILL_C | BUS_ERROR_RD_PERR |
		    BUS_ERROR_APERR | BUS_ERROR_UNMAP |
		    BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT);

	upa_writeq((SCHIZO_SAFERRCTRL_EN | err_mask),
		   pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL);

	upa_writeq((SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP)),
		   pbm->controller_regs + SCHIZO_SAFARI_IRQCTRL);
}

static void schizo_register_error_handlers(struct pci_pbm_info *pbm)
{
	struct of_device *op = of_find_device_by_node(pbm->op->node);
	u64 tmp, err_mask, err_no_mask;
	int err;

	/* Schizo IRQ property layout is:
	 * 0: PCIERR
	 * 1: UE ERR
	 * 2: CE ERR
	 * 3: SERR
	 * 4: POWER FAIL?
	 */

	if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {
		err = request_irq(op->irqs[1], schizo_ue_intr, 0,
				  "SCHIZO_UE", pbm);
		if (err)
			printk(KERN_WARNING "%s: Could not register UE, "
			       "err=%d\n", pbm->name, err);
	}
	if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {
		err = request_irq(op->irqs[2], schizo_ce_intr, 0,
				  "SCHIZO_CE", pbm);
		if (err)
			printk(KERN_WARNING "%s: Could not register CE, "
			       "err=%d\n", pbm->name, err);
	}
	err = 0;
	if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {
		err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
				  "SCHIZO_PCIERR", pbm);
	} else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {
		err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
				  "SCHIZO_PCIERR", pbm);
	}
	if (err)
		printk(KERN_WARNING "%s: Could not register PCIERR, "
		       "err=%d\n", pbm->name, err);

	if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {
		err = request_irq(op->irqs[3], schizo_safarierr_intr, 0,
				  "SCHIZO_SERR", pbm);
		if (err)
			printk(KERN_WARNING "%s: Could not register SERR, "
			       "err=%d\n", pbm->name, err);
	}

	/* Enable UE and CE interrupts for controller. */
	upa_writeq((SCHIZO_ECCCTRL_EE |
		    SCHIZO_ECCCTRL_UE |
		    SCHIZO_ECCCTRL_CE), pbm->controller_regs + SCHIZO_ECC_CTRL);

	err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
		    SCHIZO_PCICTRL_ESLCK |
		    SCHIZO_PCICTRL_TTO_ERR |
		    SCHIZO_PCICTRL_RTRY_ERR |
		    SCHIZO_PCICTRL_SBH_ERR |
		    SCHIZO_PCICTRL_SERR |
		    SCHIZO_PCICTRL_EEN);

	err_no_mask = (SCHIZO_PCICTRL_DTO_ERR |
		       SCHIZO_PCICTRL_SBH_INT);

	/* Enable PCI Error interrupts and clear error
	 * bits for each PBM.
	 */
	tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);
	tmp |= err_mask;
	tmp &= ~err_no_mask;
	upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);

	upa_writeq((SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
		    SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
		    SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
		    SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
		    SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
		    SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS),
		   pbm->pbm_regs + SCHIZO_PCI_AFSR);

	/* Make all Safari error conditions fatal except unmapped
	 * errors which we make generate interrupts.
	 */
	err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SSMDIS |
		    BUS_ERROR_BADMA | BUS_ERROR_BADMB |
		    BUS_ERROR_BADMC |
		    BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
		    BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB |
		    BUS_ERROR_CIQTO |
		    BUS_ERROR_LPQTO | BUS_ERROR_SFPQTO |
		    BUS_ERROR_UFPQTO | BUS_ERROR_APERR |
		    BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT |
		    BUS_ERROR_ILL);
#if 1
	/* XXX Something wrong with some Excalibur systems
	 * XXX Sun is shipping.  The behavior on a 2-cpu
	 * XXX machine is that both CPU1 parity error bits
	 * XXX are set and are immediately set again when
	 * XXX their error status bits are cleared.  Just
	 * XXX ignore them for now.  -DaveM
	 */
	err_mask &= ~(BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
		      BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB);
#endif

	upa_writeq((SCHIZO_SAFERRCTRL_EN | err_mask),
		   pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL);
}

static void pbm_config_busmastering(struct pci_pbm_info *pbm)
{
	u8 *addr;

	/* Set cache-line size to 64 bytes, this is actually
	 * a nop but I do it for completeness.
	 */
	addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
					0, PCI_CACHE_LINE_SIZE);
	pci_config_write8(addr, 64 / sizeof(u32));

	/* Set PBM latency timer to 64 PCI clocks. */
	addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
					0, PCI_LATENCY_TIMER);
	pci_config_write8(addr, 64);
}

static void __devinit schizo_scan_bus(struct pci_pbm_info *pbm,
				      struct device *parent)
{
	pbm_config_busmastering(pbm);
	pbm->is_66mhz_capable =
		(of_find_property(pbm->op->node, "66mhz-capable", NULL)
		 != NULL);

	pbm->pci_bus = pci_scan_one_pbm(pbm, parent);

	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
		tomatillo_register_error_handlers(pbm);
	else
		schizo_register_error_handlers(pbm);
}

#define SCHIZO_STRBUF_CONTROL		(0x02800UL)
#define SCHIZO_STRBUF_FLUSH		(0x02808UL)
#define SCHIZO_STRBUF_FSYNC		(0x02810UL)
#define SCHIZO_STRBUF_CTXFLUSH		(0x02818UL)
#define SCHIZO_STRBUF_CTXMATCH		(0x10000UL)

static void schizo_pbm_strbuf_init(struct pci_pbm_info *pbm)
{
	unsigned long base = pbm->pbm_regs;
	u64 control;

	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
		/* TOMATILLO lacks streaming cache.  */
		return;
	}

	/* SCHIZO has context flushing. */
	pbm->stc.strbuf_control		= base + SCHIZO_STRBUF_CONTROL;
	pbm->stc.strbuf_pflush		= base + SCHIZO_STRBUF_FLUSH;
	pbm->stc.strbuf_fsync		= base + SCHIZO_STRBUF_FSYNC;
	pbm->stc.strbuf_ctxflush	= base + SCHIZO_STRBUF_CTXFLUSH;
	pbm->stc.strbuf_ctxmatch_base	= base + SCHIZO_STRBUF_CTXMATCH;

	pbm->stc.strbuf_flushflag = (volatile unsigned long *)
		((((unsigned long)&pbm->stc.__flushflag_buf[0])
		  + 63UL)
		 & ~63UL);
	pbm->stc.strbuf_flushflag_pa = (unsigned long)
		__pa(pbm->stc.strbuf_flushflag);

	/* Turn off LRU locking and diag mode, enable the
	 * streaming buffer and leave the rerun-disable
	 * setting however OBP set it.
	 */
	control = upa_readq(pbm->stc.strbuf_control);
	control &= ~(SCHIZO_STRBUF_CTRL_LPTR |
		     SCHIZO_STRBUF_CTRL_LENAB |
		     SCHIZO_STRBUF_CTRL_DENAB);
	control |= SCHIZO_STRBUF_CTRL_ENAB;
	upa_writeq(control, pbm->stc.strbuf_control);

	pbm->stc.strbuf_enabled = 1;
}

#define SCHIZO_IOMMU_CONTROL		(0x00200UL)
#define SCHIZO_IOMMU_TSBBASE		(0x00208UL)
#define SCHIZO_IOMMU_FLUSH		(0x00210UL)
#define SCHIZO_IOMMU_CTXFLUSH		(0x00218UL)

static int schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
{
	static const u32 vdma_default[] = { 0xc0000000, 0x40000000 };
	unsigned long i, tagbase, database;
	struct iommu *iommu = pbm->iommu;
	int tsbsize, err;
	const u32 *vdma;
	u32 dma_mask;
	u64 control;

	vdma = of_get_property(pbm->op->node, "virtual-dma", NULL);
	if (!vdma)
		vdma = vdma_default;

	dma_mask = vdma[0];
	switch (vdma[1]) {
		case 0x20000000:
			dma_mask |= 0x1fffffff;
			tsbsize = 64;
			break;

		case 0x40000000:
			dma_mask |= 0x3fffffff;
			tsbsize = 128;
			break;

		case 0x80000000:
			dma_mask |= 0x7fffffff;
			tsbsize = 128;
			break;

		default:
			printk(KERN_ERR PFX "Strange virtual-dma size.\n");
			return -EINVAL;
	}

	/* Register addresses, SCHIZO has iommu ctx flushing. */
	iommu->iommu_control  = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL;
	iommu->iommu_tsbbase  = pbm->pbm_regs + SCHIZO_IOMMU_TSBBASE;
	iommu->iommu_flush    = pbm->pbm_regs + SCHIZO_IOMMU_FLUSH;
	iommu->iommu_tags     = iommu->iommu_flush + (0xa580UL - 0x0210UL);
	iommu->iommu_ctxflush = pbm->pbm_regs + SCHIZO_IOMMU_CTXFLUSH;

	/* We use the main control/status register of SCHIZO as the write
	 * completion register.
	 */
	iommu->write_complete_reg = pbm->controller_regs + 0x10000UL;

	/*
	 * Invalidate TLB Entries.
	 */
	control = upa_readq(iommu->iommu_control);
	control |= SCHIZO_IOMMU_CTRL_DENAB;
	upa_writeq(control, iommu->iommu_control);

	tagbase = SCHIZO_IOMMU_TAG, database = SCHIZO_IOMMU_DATA;

	for (i = 0; i < 16; i++) {
		upa_writeq(0, pbm->pbm_regs + tagbase + (i * 8UL));
		upa_writeq(0, pbm->pbm_regs + database + (i * 8UL));
	}

	/* Leave diag mode enabled for full-flushing done
	 * in pci_iommu.c
	 */
	err = iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask,
			       pbm->numa_node);
	if (err) {
		printk(KERN_ERR PFX "iommu_table_init() fails with %d\n", err);
		return err;
	}

	upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase);

	control = upa_readq(iommu->iommu_control);
	control &= ~(SCHIZO_IOMMU_CTRL_TSBSZ | SCHIZO_IOMMU_CTRL_TBWSZ);
	switch (tsbsize) {
	case 64:
		control |= SCHIZO_IOMMU_TSBSZ_64K;
		break;
	case 128:
		control |= SCHIZO_IOMMU_TSBSZ_128K;
		break;
	}

	control |= SCHIZO_IOMMU_CTRL_ENAB;
	upa_writeq(control, iommu->iommu_control);

	return 0;
}

#define SCHIZO_PCI_IRQ_RETRY	(0x1a00UL)
#define  SCHIZO_IRQ_RETRY_INF	 0xffUL

#define SCHIZO_PCI_DIAG			(0x2020UL)
#define  SCHIZO_PCIDIAG_D_BADECC	(1UL << 10UL) /* Disable BAD ECC errors (Schizo) */
#define  SCHIZO_PCIDIAG_D_BYPASS	(1UL <<  9UL) /* Disable MMU bypass mode (Schizo/Tomatillo) */
#define  SCHIZO_PCIDIAG_D_TTO		(1UL <<  8UL) /* Disable TTO errors (Schizo/Tomatillo) */
#define  SCHIZO_PCIDIAG_D_RTRYARB	(1UL <<  7UL) /* Disable retry arbitration (Schizo) */
#define  SCHIZO_PCIDIAG_D_RETRY		(1UL <<  6UL) /* Disable retry limit (Schizo/Tomatillo) */
#define  SCHIZO_PCIDIAG_D_INTSYNC	(1UL <<  5UL) /* Disable interrupt/DMA synch (Schizo/Tomatillo) */
#define  SCHIZO_PCIDIAG_I_DMA_PARITY	(1UL <<  3UL) /* Invert DMA parity (Schizo/Tomatillo) */
#define  SCHIZO_PCIDIAG_I_PIOD_PARITY	(1UL <<  2UL) /* Invert PIO data parity (Schizo/Tomatillo) */
#define  SCHIZO_PCIDIAG_I_PIOA_PARITY	(1UL <<  1UL) /* Invert PIO address parity (Schizo/Tomatillo) */

#define TOMATILLO_PCI_IOC_CSR		(0x2248UL)
#define TOMATILLO_IOC_PART_WPENAB	0x0000000000080000UL
#define TOMATILLO_IOC_RDMULT_PENAB	0x0000000000040000UL
#define TOMATILLO_IOC_RDONE_PENAB	0x0000000000020000UL
#define TOMATILLO_IOC_RDLINE_PENAB	0x0000000000010000UL
#define TOMATILLO_IOC_RDMULT_PLEN	0x000000000000c000UL
#define TOMATILLO_IOC_RDMULT_PLEN_SHIFT	14UL
#define TOMATILLO_IOC_RDONE_PLEN	0x0000000000003000UL
#define TOMATILLO_IOC_RDONE_PLEN_SHIFT	12UL
#define TOMATILLO_IOC_RDLINE_PLEN	0x0000000000000c00UL
#define TOMATILLO_IOC_RDLINE_PLEN_SHIFT	10UL
#define TOMATILLO_IOC_PREF_OFF		0x00000000000003f8UL
#define TOMATILLO_IOC_PREF_OFF_SHIFT	3UL
#define TOMATILLO_IOC_RDMULT_CPENAB	0x0000000000000004UL
#define TOMATILLO_IOC_RDONE_CPENAB	0x0000000000000002UL
#define TOMATILLO_IOC_RDLINE_CPENAB	0x0000000000000001UL

#define TOMATILLO_PCI_IOC_TDIAG		(0x2250UL)
#define TOMATILLO_PCI_IOC_DDIAG		(0x2290UL)

static void schizo_pbm_hw_init(struct pci_pbm_info *pbm)
{
	u64 tmp;

	upa_writeq(5, pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY);

	tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);

	/* Enable arbiter for all PCI slots.  */
	tmp |= 0xff;

	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
	    pbm->chip_version >= 0x2)
		tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT;

	if (!of_find_property(pbm->op->node, "no-bus-parking", NULL))
		tmp |= SCHIZO_PCICTRL_PARK;
	else
		tmp &= ~SCHIZO_PCICTRL_PARK;

	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
	    pbm->chip_version <= 0x1)
		tmp |= SCHIZO_PCICTRL_DTO_INT;
	else
		tmp &= ~SCHIZO_PCICTRL_DTO_INT;

	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
		tmp |= (SCHIZO_PCICTRL_MRM_PREF |
			SCHIZO_PCICTRL_RDO_PREF |
			SCHIZO_PCICTRL_RDL_PREF);

	upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);

	tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_DIAG);
	tmp &= ~(SCHIZO_PCIDIAG_D_RTRYARB |
		 SCHIZO_PCIDIAG_D_RETRY |
		 SCHIZO_PCIDIAG_D_INTSYNC);
	upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_DIAG);

	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
		/* Clear prefetch lengths to workaround a bug in
		 * Jalapeno...
		 */
		tmp = (TOMATILLO_IOC_PART_WPENAB |
		       (1 << TOMATILLO_IOC_PREF_OFF_SHIFT) |
		       TOMATILLO_IOC_RDMULT_CPENAB |
		       TOMATILLO_IOC_RDONE_CPENAB |
		       TOMATILLO_IOC_RDLINE_CPENAB);

		upa_writeq(tmp, pbm->pbm_regs + TOMATILLO_PCI_IOC_CSR);
	}
}

static int __devinit schizo_pbm_init(struct pci_pbm_info *pbm,
				     struct of_device *op, u32 portid,
				     int chip_type)
{
	const struct linux_prom64_registers *regs;
	struct device_node *dp = op->node;
	const char *chipset_name;
	int is_pbm_a, err;

	switch (chip_type) {
	case PBM_CHIP_TYPE_TOMATILLO:
		chipset_name = "TOMATILLO";
		break;

	case PBM_CHIP_TYPE_SCHIZO_PLUS:
		chipset_name = "SCHIZO+";
		break;

	case PBM_CHIP_TYPE_SCHIZO:
	default:
		chipset_name = "SCHIZO";
		break;
	};

	/* For SCHIZO, three OBP regs:
	 * 1) PBM controller regs
	 * 2) Schizo front-end controller regs (same for both PBMs)
	 * 3) PBM PCI config space
	 *
	 * For TOMATILLO, four OBP regs:
	 * 1) PBM controller regs
	 * 2) Tomatillo front-end controller regs
	 * 3) PBM PCI config space
	 * 4) Ichip regs
	 */
	regs = of_get_property(dp, "reg", NULL);

	is_pbm_a = ((regs[0].phys_addr & 0x00700000) == 0x00600000);

	pbm->next = pci_pbm_root;
	pci_pbm_root = pbm;

	pbm->numa_node = -1;

	pbm->pci_ops = &sun4u_pci_ops;
	pbm->config_space_reg_bits = 8;

	pbm->index = pci_num_pbms++;

	pbm->portid = portid;
	pbm->op = op;

	pbm->chip_type = chip_type;
	pbm->chip_version = of_getintprop_default(dp, "version#", 0);
	pbm->chip_revision = of_getintprop_default(dp, "module-version#", 0);

	pbm->pbm_regs = regs[0].phys_addr;
	pbm->controller_regs = regs[1].phys_addr - 0x10000UL;

	if (chip_type == PBM_CHIP_TYPE_TOMATILLO)
		pbm->sync_reg = regs[3].phys_addr + 0x1a18UL;

	pbm->name = dp->full_name;

	printk("%s: %s PCI Bus Module ver[%x:%x]\n",
	       pbm->name, chipset_name,
	       pbm->chip_version, pbm->chip_revision);

	schizo_pbm_hw_init(pbm);

	pci_determine_mem_io_space(pbm);

	pci_get_pbm_props(pbm);

	err = schizo_pbm_iommu_init(pbm);
	if (err)
		return err;

	schizo_pbm_strbuf_init(pbm);

	schizo_scan_bus(pbm, &op->dev);

	return 0;
}

static inline int portid_compare(u32 x, u32 y, int chip_type)
{
	if (chip_type == PBM_CHIP_TYPE_TOMATILLO) {
		if (x == (y ^ 1))
			return 1;
		return 0;
	}
	return (x == y);
}

static struct pci_pbm_info * __devinit schizo_find_sibling(u32 portid,
							   int chip_type)
{
	struct pci_pbm_info *pbm;

	for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
		if (portid_compare(pbm->portid, portid, chip_type))
			return pbm;
	}
	return NULL;
}

static int __devinit __schizo_init(struct of_device *op, unsigned long chip_type)
{
	struct device_node *dp = op->node;
	struct pci_pbm_info *pbm;
	struct iommu *iommu;
	u32 portid;
	int err;

	portid = of_getintprop_default(dp, "portid", 0xff);

	err = -ENOMEM;
	pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
	if (!pbm) {
		printk(KERN_ERR PFX "Cannot allocate pci_pbm_info.\n");
		goto out_err;
	}

	pbm->sibling = schizo_find_sibling(portid, chip_type);

	iommu = kzalloc(sizeof(struct iommu), GFP_KERNEL);
	if (!iommu) {
		printk(KERN_ERR PFX "Cannot allocate PBM A iommu.\n");
		goto out_free_pbm;
	}

	pbm->iommu = iommu;

	if (schizo_pbm_init(pbm, op, portid, chip_type))
		goto out_free_iommu;

	if (pbm->sibling)
		pbm->sibling->sibling = pbm;

	dev_set_drvdata(&op->dev, pbm);

	return 0;

out_free_iommu:
	kfree(pbm->iommu);

out_free_pbm:
	kfree(pbm);

out_err:
	return err;
}

static int __devinit schizo_probe(struct of_device *op,
				  const struct of_device_id *match)
{
	return __schizo_init(op, (unsigned long) match->data);
}

/* The ordering of this table is very important.  Some Tomatillo
 * nodes announce that they are compatible with both pci108e,a801
 * and pci108e,8001.  So list the chips in reverse chronological
 * order.
 */
static struct of_device_id __initdata schizo_match[] = {
	{
		.name = "pci",
		.compatible = "pci108e,a801",
		.data = (void *) PBM_CHIP_TYPE_TOMATILLO,
	},
	{
		.name = "pci",
		.compatible = "pci108e,8002",
		.data = (void *) PBM_CHIP_TYPE_SCHIZO_PLUS,
	},
	{
		.name = "pci",
		.compatible = "pci108e,8001",
		.data = (void *) PBM_CHIP_TYPE_SCHIZO,
	},
	{},
};

static struct of_platform_driver schizo_driver = {
	.name		= DRIVER_NAME,
	.match_table	= schizo_match,
	.probe		= schizo_probe,
};

static int __init schizo_init(void)
{
	return of_register_driver(&schizo_driver, &of_bus_type);
}

subsys_initcall(schizo_init);