summaryrefslogtreecommitdiffstats
path: root/kernel/arch/mips/alchemy/common/irq.c
blob: da9f9220048fceeafe755057c58905ae74e5abd2 (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
/*
 * Copyright 2001, 2007-2008 MontaVista Software Inc.
 * Author: MontaVista Software, Inc. <source@mvista.com>
 *
 * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
 *
 *  This program is free software; you can redistribute	 it and/or modify it
 *  under  the terms of	 the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the	License, or (at your
 *  option) any later version.
 *
 *  THIS  SOFTWARE  IS PROVIDED	  ``AS	IS'' AND   ANY	EXPRESS OR IMPLIED
 *  WARRANTIES,	  INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
 *  NO	EVENT  SHALL   THE AUTHOR  BE	 LIABLE FOR ANY	  DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED	  TO, PROCUREMENT OF  SUBSTITUTE GOODS	OR SERVICES; LOSS OF
 *  USE, DATA,	OR PROFITS; OR	BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN	 CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/export.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/syscore_ops.h>

#include <asm/irq_cpu.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/gpio-au1300.h>

/* Interrupt Controller register offsets */
#define IC_CFG0RD	0x40
#define IC_CFG0SET	0x40
#define IC_CFG0CLR	0x44
#define IC_CFG1RD	0x48
#define IC_CFG1SET	0x48
#define IC_CFG1CLR	0x4C
#define IC_CFG2RD	0x50
#define IC_CFG2SET	0x50
#define IC_CFG2CLR	0x54
#define IC_REQ0INT	0x54
#define IC_SRCRD	0x58
#define IC_SRCSET	0x58
#define IC_SRCCLR	0x5C
#define IC_REQ1INT	0x5C
#define IC_ASSIGNRD	0x60
#define IC_ASSIGNSET	0x60
#define IC_ASSIGNCLR	0x64
#define IC_WAKERD	0x68
#define IC_WAKESET	0x68
#define IC_WAKECLR	0x6C
#define IC_MASKRD	0x70
#define IC_MASKSET	0x70
#define IC_MASKCLR	0x74
#define IC_RISINGRD	0x78
#define IC_RISINGCLR	0x78
#define IC_FALLINGRD	0x7C
#define IC_FALLINGCLR	0x7C
#define IC_TESTBIT	0x80

/* per-processor fixed function irqs */
struct alchemy_irqmap {
	int irq;	/* linux IRQ number */
	int type;	/* IRQ_TYPE_ */
	int prio;	/* irq priority, 0 highest, 3 lowest */
	int internal;	/* GPIC: internal source (no ext. pin)? */
};

static int au1x_ic_settype(struct irq_data *d, unsigned int type);
static int au1300_gpic_settype(struct irq_data *d, unsigned int type);


/* NOTE on interrupt priorities: The original writers of this code said:
 *
 * Because of the tight timing of SETUP token to reply transactions,
 * the USB devices-side packet complete interrupt (USB_DEV_REQ_INT)
 * needs the highest priority.
 */
struct alchemy_irqmap au1000_irqmap[] __initdata = {
	{ AU1000_UART0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_UART1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_UART2_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_UART3_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_SSI0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_SSI1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_DMA_INT_BASE,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_DMA_INT_BASE+1,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_DMA_INT_BASE+2,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_DMA_INT_BASE+3,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_DMA_INT_BASE+4,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_DMA_INT_BASE+5,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_DMA_INT_BASE+6,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_DMA_INT_BASE+7,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_TOY_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1000_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1000_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1000_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1000_RTC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1000_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1000_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1000_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
	{ AU1000_IRDA_TX_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_IRDA_RX_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH,	0, 0 },
	{ AU1000_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1000_USB_HOST_INT,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
	{ AU1000_ACSYNC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1000_MAC0_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_MAC1_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1000_AC97C_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ -1, },
};

struct alchemy_irqmap au1500_irqmap[] __initdata = {
	{ AU1500_UART0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1500_PCI_INTA,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
	{ AU1500_PCI_INTB,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
	{ AU1500_UART3_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1500_PCI_INTC,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
	{ AU1500_PCI_INTD,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
	{ AU1500_DMA_INT_BASE,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1500_DMA_INT_BASE+1,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1500_DMA_INT_BASE+2,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1500_DMA_INT_BASE+3,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1500_DMA_INT_BASE+4,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1500_DMA_INT_BASE+5,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1500_DMA_INT_BASE+6,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1500_DMA_INT_BASE+7,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1500_TOY_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1500_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1500_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1500_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1500_RTC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1500_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1500_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1500_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
	{ AU1500_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH,	0, 0 },
	{ AU1500_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1500_USB_HOST_INT,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
	{ AU1500_ACSYNC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1500_MAC0_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1500_MAC1_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1500_AC97C_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ -1, },
};

struct alchemy_irqmap au1100_irqmap[] __initdata = {
	{ AU1100_UART0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_UART1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_SD_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_UART3_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_SSI0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_SSI1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_DMA_INT_BASE,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_DMA_INT_BASE+1,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_DMA_INT_BASE+2,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_DMA_INT_BASE+3,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_DMA_INT_BASE+4,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_DMA_INT_BASE+5,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_DMA_INT_BASE+6,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_DMA_INT_BASE+7,  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_TOY_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1100_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1100_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1100_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1100_RTC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1100_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1100_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1100_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
	{ AU1100_IRDA_TX_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_IRDA_RX_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH,	0, 0 },
	{ AU1100_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1100_USB_HOST_INT,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
	{ AU1100_ACSYNC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1100_MAC0_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_LCD_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1100_AC97C_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ -1, },
};

struct alchemy_irqmap au1550_irqmap[] __initdata = {
	{ AU1550_UART0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1550_PCI_INTA,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
	{ AU1550_PCI_INTB,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
	{ AU1550_DDMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1550_CRYPTO_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1550_PCI_INTC,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
	{ AU1550_PCI_INTD,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
	{ AU1550_PCI_RST_INT,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
	{ AU1550_UART1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1550_UART3_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1550_PSC0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1550_PSC1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1550_PSC2_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1550_PSC3_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1550_TOY_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1550_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1550_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1550_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1550_RTC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1550_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1550_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1550_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
	{ AU1550_NAND_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1550_USB_DEV_REQ_INT, IRQ_TYPE_LEVEL_HIGH,	0, 0 },
	{ AU1550_USB_DEV_SUS_INT, IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1550_USB_HOST_INT,	  IRQ_TYPE_LEVEL_LOW,	1, 0 },
	{ AU1550_MAC0_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1550_MAC1_DMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ -1, },
};

struct alchemy_irqmap au1200_irqmap[] __initdata = {
	{ AU1200_UART0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1200_SWT_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1200_SD_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1200_DDMA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1200_MAE_BE_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1200_UART1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1200_MAE_FE_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1200_PSC0_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1200_PSC1_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1200_AES_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1200_CAMERA_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1200_TOY_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1200_TOY_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1200_TOY_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1200_TOY_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1200_RTC_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1200_RTC_MATCH0_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1200_RTC_MATCH1_INT,  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1200_RTC_MATCH2_INT,  IRQ_TYPE_EDGE_RISING, 0, 0 },
	{ AU1200_NAND_INT,	  IRQ_TYPE_EDGE_RISING, 1, 0 },
	{ AU1200_USB_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1200_LCD_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ AU1200_MAE_BOTH_INT,	  IRQ_TYPE_LEVEL_HIGH,	1, 0 },
	{ -1, },
};

static struct alchemy_irqmap au1300_irqmap[] __initdata = {
	/* multifunction: gpio pin or device */
	{ AU1300_UART1_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
	{ AU1300_UART2_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
	{ AU1300_UART3_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
	{ AU1300_SD1_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
	{ AU1300_SD2_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
	{ AU1300_PSC0_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
	{ AU1300_PSC1_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
	{ AU1300_PSC2_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
	{ AU1300_PSC3_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
	{ AU1300_NAND_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 0, },
	/* au1300 internal */
	{ AU1300_DDMA_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
	{ AU1300_MMU_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
	{ AU1300_MPU_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
	{ AU1300_GPU_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
	{ AU1300_UDMA_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
	{ AU1300_TOY_INT,	 IRQ_TYPE_EDGE_RISING,	1, 1, },
	{ AU1300_TOY_MATCH0_INT, IRQ_TYPE_EDGE_RISING,	1, 1, },
	{ AU1300_TOY_MATCH1_INT, IRQ_TYPE_EDGE_RISING,	1, 1, },
	{ AU1300_TOY_MATCH2_INT, IRQ_TYPE_EDGE_RISING,	1, 1, },
	{ AU1300_RTC_INT,	 IRQ_TYPE_EDGE_RISING,	1, 1, },
	{ AU1300_RTC_MATCH0_INT, IRQ_TYPE_EDGE_RISING,	1, 1, },
	{ AU1300_RTC_MATCH1_INT, IRQ_TYPE_EDGE_RISING,	1, 1, },
	{ AU1300_RTC_MATCH2_INT, IRQ_TYPE_EDGE_RISING,	0, 1, },
	{ AU1300_UART0_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
	{ AU1300_SD0_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
	{ AU1300_USB_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
	{ AU1300_LCD_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
	{ AU1300_BSA_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
	{ AU1300_MPE_INT,	 IRQ_TYPE_EDGE_RISING,	1, 1, },
	{ AU1300_ITE_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
	{ AU1300_AES_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
	{ AU1300_CIM_INT,	 IRQ_TYPE_LEVEL_HIGH,	1, 1, },
	{ -1, },	/* terminator */
};

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

static void au1x_ic0_unmask(struct irq_data *d)
{
	unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);

	__raw_writel(1 << bit, base + IC_MASKSET);
	__raw_writel(1 << bit, base + IC_WAKESET);
	wmb();
}

static void au1x_ic1_unmask(struct irq_data *d)
{
	unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);

	__raw_writel(1 << bit, base + IC_MASKSET);
	__raw_writel(1 << bit, base + IC_WAKESET);
	wmb();
}

static void au1x_ic0_mask(struct irq_data *d)
{
	unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);

	__raw_writel(1 << bit, base + IC_MASKCLR);
	__raw_writel(1 << bit, base + IC_WAKECLR);
	wmb();
}

static void au1x_ic1_mask(struct irq_data *d)
{
	unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);

	__raw_writel(1 << bit, base + IC_MASKCLR);
	__raw_writel(1 << bit, base + IC_WAKECLR);
	wmb();
}

static void au1x_ic0_ack(struct irq_data *d)
{
	unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);

	/*
	 * This may assume that we don't get interrupts from
	 * both edges at once, or if we do, that we don't care.
	 */
	__raw_writel(1 << bit, base + IC_FALLINGCLR);
	__raw_writel(1 << bit, base + IC_RISINGCLR);
	wmb();
}

static void au1x_ic1_ack(struct irq_data *d)
{
	unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);

	/*
	 * This may assume that we don't get interrupts from
	 * both edges at once, or if we do, that we don't care.
	 */
	__raw_writel(1 << bit, base + IC_FALLINGCLR);
	__raw_writel(1 << bit, base + IC_RISINGCLR);
	wmb();
}

static void au1x_ic0_maskack(struct irq_data *d)
{
	unsigned int bit = d->irq - AU1000_INTC0_INT_BASE;
	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);

	__raw_writel(1 << bit, base + IC_WAKECLR);
	__raw_writel(1 << bit, base + IC_MASKCLR);
	__raw_writel(1 << bit, base + IC_RISINGCLR);
	__raw_writel(1 << bit, base + IC_FALLINGCLR);
	wmb();
}

static void au1x_ic1_maskack(struct irq_data *d)
{
	unsigned int bit = d->irq - AU1000_INTC1_INT_BASE;
	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);

	__raw_writel(1 << bit, base + IC_WAKECLR);
	__raw_writel(1 << bit, base + IC_MASKCLR);
	__raw_writel(1 << bit, base + IC_RISINGCLR);
	__raw_writel(1 << bit, base + IC_FALLINGCLR);
	wmb();
}

static int au1x_ic1_setwake(struct irq_data *d, unsigned int on)
{
	int bit = d->irq - AU1000_INTC1_INT_BASE;
	unsigned long wakemsk, flags;

	/* only GPIO 0-7 can act as wakeup source.  Fortunately these
	 * are wired up identically on all supported variants.
	 */
	if ((bit < 0) || (bit > 7))
		return -EINVAL;

	local_irq_save(flags);
	wakemsk = alchemy_rdsys(AU1000_SYS_WAKEMSK);
	if (on)
		wakemsk |= 1 << bit;
	else
		wakemsk &= ~(1 << bit);
	alchemy_wrsys(wakemsk, AU1000_SYS_WAKEMSK);
	local_irq_restore(flags);

	return 0;
}

/*
 * irq_chips for both ICs; this way the mask handlers can be
 * as short as possible.
 */
static struct irq_chip au1x_ic0_chip = {
	.name		= "Alchemy-IC0",
	.irq_ack	= au1x_ic0_ack,
	.irq_mask	= au1x_ic0_mask,
	.irq_mask_ack	= au1x_ic0_maskack,
	.irq_unmask	= au1x_ic0_unmask,
	.irq_set_type	= au1x_ic_settype,
};

static struct irq_chip au1x_ic1_chip = {
	.name		= "Alchemy-IC1",
	.irq_ack	= au1x_ic1_ack,
	.irq_mask	= au1x_ic1_mask,
	.irq_mask_ack	= au1x_ic1_maskack,
	.irq_unmask	= au1x_ic1_unmask,
	.irq_set_type	= au1x_ic_settype,
	.irq_set_wake	= au1x_ic1_setwake,
};

static int au1x_ic_settype(struct irq_data *d, unsigned int flow_type)
{
	struct irq_chip *chip;
	unsigned int bit, irq = d->irq;
	irq_flow_handler_t handler = NULL;
	unsigned char *name = NULL;
	void __iomem *base;
	int ret;

	if (irq >= AU1000_INTC1_INT_BASE) {
		bit = irq - AU1000_INTC1_INT_BASE;
		chip = &au1x_ic1_chip;
		base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
	} else {
		bit = irq - AU1000_INTC0_INT_BASE;
		chip = &au1x_ic0_chip;
		base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
	}

	if (bit > 31)
		return -EINVAL;

	ret = 0;

	switch (flow_type) {	/* cfgregs 2:1:0 */
	case IRQ_TYPE_EDGE_RISING:	/* 0:0:1 */
		__raw_writel(1 << bit, base + IC_CFG2CLR);
		__raw_writel(1 << bit, base + IC_CFG1CLR);
		__raw_writel(1 << bit, base + IC_CFG0SET);
		handler = handle_edge_irq;
		name = "riseedge";
		break;
	case IRQ_TYPE_EDGE_FALLING:	/* 0:1:0 */
		__raw_writel(1 << bit, base + IC_CFG2CLR);
		__raw_writel(1 << bit, base + IC_CFG1SET);
		__raw_writel(1 << bit, base + IC_CFG0CLR);
		handler = handle_edge_irq;
		name = "falledge";
		break;
	case IRQ_TYPE_EDGE_BOTH:	/* 0:1:1 */
		__raw_writel(1 << bit, base + IC_CFG2CLR);
		__raw_writel(1 << bit, base + IC_CFG1SET);
		__raw_writel(1 << bit, base + IC_CFG0SET);
		handler = handle_edge_irq;
		name = "bothedge";
		break;
	case IRQ_TYPE_LEVEL_HIGH:	/* 1:0:1 */
		__raw_writel(1 << bit, base + IC_CFG2SET);
		__raw_writel(1 << bit, base + IC_CFG1CLR);
		__raw_writel(1 << bit, base + IC_CFG0SET);
		handler = handle_level_irq;
		name = "hilevel";
		break;
	case IRQ_TYPE_LEVEL_LOW:	/* 1:1:0 */
		__raw_writel(1 << bit, base + IC_CFG2SET);
		__raw_writel(1 << bit, base + IC_CFG1SET);
		__raw_writel(1 << bit, base + IC_CFG0CLR);
		handler = handle_level_irq;
		name = "lowlevel";
		break;
	case IRQ_TYPE_NONE:		/* 0:0:0 */
		__raw_writel(1 << bit, base + IC_CFG2CLR);
		__raw_writel(1 << bit, base + IC_CFG1CLR);
		__raw_writel(1 << bit, base + IC_CFG0CLR);
		break;
	default:
		ret = -EINVAL;
	}
	irq_set_chip_handler_name_locked(d, chip, handler, name);

	wmb();

	return ret;
}

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

/*
 * au1300_gpic_chgcfg - change PIN configuration.
 * @gpio:	pin to change (0-based GPIO number from datasheet).
 * @clr:	clear all bits set in 'clr'.
 * @set:	set these bits.
 *
 * modifies a pins' configuration register, bits set in @clr will
 * be cleared in the register, bits in @set will be set.
 */
static inline void au1300_gpic_chgcfg(unsigned int gpio,
				      unsigned long clr,
				      unsigned long set)
{
	void __iomem *r = AU1300_GPIC_ADDR;
	unsigned long l;

	r += gpio * 4;	/* offset into pin config array */
	l = __raw_readl(r + AU1300_GPIC_PINCFG);
	l &= ~clr;
	l |= set;
	__raw_writel(l, r + AU1300_GPIC_PINCFG);
	wmb();
}

/*
 * au1300_pinfunc_to_gpio - assign a pin as GPIO input (GPIO ctrl).
 * @pin:	pin (0-based GPIO number from datasheet).
 *
 * Assigns a GPIO pin to the GPIO controller, so its level can either
 * be read or set through the generic GPIO functions.
 * If you need a GPOUT, use au1300_gpio_set_value(pin, 0/1).
 * REVISIT: is this function really necessary?
 */
void au1300_pinfunc_to_gpio(enum au1300_multifunc_pins gpio)
{
	au1300_gpio_direction_input(gpio + AU1300_GPIO_BASE);
}
EXPORT_SYMBOL_GPL(au1300_pinfunc_to_gpio);

/*
 * au1300_pinfunc_to_dev - assign a pin to the device function.
 * @pin:	pin (0-based GPIO number from datasheet).
 *
 * Assigns a GPIO pin to its associated device function; the pin will be
 * driven by the device and not through GPIO functions.
 */
void au1300_pinfunc_to_dev(enum au1300_multifunc_pins gpio)
{
	void __iomem *r = AU1300_GPIC_ADDR;
	unsigned long bit;

	r += GPIC_GPIO_BANKOFF(gpio);
	bit = GPIC_GPIO_TO_BIT(gpio);
	__raw_writel(bit, r + AU1300_GPIC_DEVSEL);
	wmb();
}
EXPORT_SYMBOL_GPL(au1300_pinfunc_to_dev);

/*
 * au1300_set_irq_priority -  set internal priority of IRQ.
 * @irq:	irq to set priority (linux irq number).
 * @p:		priority (0 = highest, 3 = lowest).
 */
void au1300_set_irq_priority(unsigned int irq, int p)
{
	irq -= ALCHEMY_GPIC_INT_BASE;
	au1300_gpic_chgcfg(irq, GPIC_CFG_IL_MASK, GPIC_CFG_IL_SET(p));
}
EXPORT_SYMBOL_GPL(au1300_set_irq_priority);

/*
 * au1300_set_dbdma_gpio - assign a gpio to one of the DBDMA triggers.
 * @dchan:	dbdma trigger select (0, 1).
 * @gpio:	pin to assign as trigger.
 *
 * DBDMA controller has 2 external trigger sources; this function
 * assigns a GPIO to the selected trigger.
 */
void au1300_set_dbdma_gpio(int dchan, unsigned int gpio)
{
	unsigned long r;

	if ((dchan >= 0) && (dchan <= 1)) {
		r = __raw_readl(AU1300_GPIC_ADDR + AU1300_GPIC_DMASEL);
		r &= ~(0xff << (8 * dchan));
		r |= (gpio & 0x7f) << (8 * dchan);
		__raw_writel(r, AU1300_GPIC_ADDR + AU1300_GPIC_DMASEL);
		wmb();
	}
}

static inline void gpic_pin_set_idlewake(unsigned int gpio, int allow)
{
	au1300_gpic_chgcfg(gpio, GPIC_CFG_IDLEWAKE,
			   allow ? GPIC_CFG_IDLEWAKE : 0);
}

static void au1300_gpic_mask(struct irq_data *d)
{
	void __iomem *r = AU1300_GPIC_ADDR;
	unsigned long bit, irq = d->irq;

	irq -= ALCHEMY_GPIC_INT_BASE;
	r += GPIC_GPIO_BANKOFF(irq);
	bit = GPIC_GPIO_TO_BIT(irq);
	__raw_writel(bit, r + AU1300_GPIC_IDIS);
	wmb();

	gpic_pin_set_idlewake(irq, 0);
}

static void au1300_gpic_unmask(struct irq_data *d)
{
	void __iomem *r = AU1300_GPIC_ADDR;
	unsigned long bit, irq = d->irq;

	irq -= ALCHEMY_GPIC_INT_BASE;

	gpic_pin_set_idlewake(irq, 1);

	r += GPIC_GPIO_BANKOFF(irq);
	bit = GPIC_GPIO_TO_BIT(irq);
	__raw_writel(bit, r + AU1300_GPIC_IEN);
	wmb();
}

static void au1300_gpic_maskack(struct irq_data *d)
{
	void __iomem *r = AU1300_GPIC_ADDR;
	unsigned long bit, irq = d->irq;

	irq -= ALCHEMY_GPIC_INT_BASE;
	r += GPIC_GPIO_BANKOFF(irq);
	bit = GPIC_GPIO_TO_BIT(irq);
	__raw_writel(bit, r + AU1300_GPIC_IPEND);	/* ack */
	__raw_writel(bit, r + AU1300_GPIC_IDIS);	/* mask */
	wmb();

	gpic_pin_set_idlewake(irq, 0);
}

static void au1300_gpic_ack(struct irq_data *d)
{
	void __iomem *r = AU1300_GPIC_ADDR;
	unsigned long bit, irq = d->irq;

	irq -= ALCHEMY_GPIC_INT_BASE;
	r += GPIC_GPIO_BANKOFF(irq);
	bit = GPIC_GPIO_TO_BIT(irq);
	__raw_writel(bit, r + AU1300_GPIC_IPEND);	/* ack */
	wmb();
}

static struct irq_chip au1300_gpic = {
	.name		= "GPIOINT",
	.irq_ack	= au1300_gpic_ack,
	.irq_mask	= au1300_gpic_mask,
	.irq_mask_ack	= au1300_gpic_maskack,
	.irq_unmask	= au1300_gpic_unmask,
	.irq_set_type	= au1300_gpic_settype,
};

static int au1300_gpic_settype(struct irq_data *d, unsigned int type)
{
	unsigned long s;
	unsigned char *name = NULL;
	irq_flow_handler_t hdl = NULL;

	switch (type) {
	case IRQ_TYPE_LEVEL_HIGH:
		s = GPIC_CFG_IC_LEVEL_HIGH;
		name = "high";
		hdl = handle_level_irq;
		break;
	case IRQ_TYPE_LEVEL_LOW:
		s = GPIC_CFG_IC_LEVEL_LOW;
		name = "low";
		hdl = handle_level_irq;
		break;
	case IRQ_TYPE_EDGE_RISING:
		s = GPIC_CFG_IC_EDGE_RISE;
		name = "posedge";
		hdl = handle_edge_irq;
		break;
	case IRQ_TYPE_EDGE_FALLING:
		s = GPIC_CFG_IC_EDGE_FALL;
		name = "negedge";
		hdl = handle_edge_irq;
		break;
	case IRQ_TYPE_EDGE_BOTH:
		s = GPIC_CFG_IC_EDGE_BOTH;
		name = "bothedge";
		hdl = handle_edge_irq;
		break;
	case IRQ_TYPE_NONE:
		s = GPIC_CFG_IC_OFF;
		name = "disabled";
		hdl = handle_level_irq;
		break;
	default:
		return -EINVAL;
	}

	irq_set_chip_handler_name_locked(d, &au1300_gpic, hdl, name);

	au1300_gpic_chgcfg(d->irq - ALCHEMY_GPIC_INT_BASE, GPIC_CFG_IC_MASK, s);

	return 0;
}

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

static inline void ic_init(void __iomem *base)
{
	/* initialize interrupt controller to a safe state */
	__raw_writel(0xffffffff, base + IC_CFG0CLR);
	__raw_writel(0xffffffff, base + IC_CFG1CLR);
	__raw_writel(0xffffffff, base + IC_CFG2CLR);
	__raw_writel(0xffffffff, base + IC_MASKCLR);
	__raw_writel(0xffffffff, base + IC_ASSIGNCLR);
	__raw_writel(0xffffffff, base + IC_WAKECLR);
	__raw_writel(0xffffffff, base + IC_SRCSET);
	__raw_writel(0xffffffff, base + IC_FALLINGCLR);
	__raw_writel(0xffffffff, base + IC_RISINGCLR);
	__raw_writel(0x00000000, base + IC_TESTBIT);
	wmb();
}

static unsigned long alchemy_gpic_pmdata[ALCHEMY_GPIC_INT_NUM + 6];

static inline void alchemy_ic_suspend_one(void __iomem *base, unsigned long *d)
{
	d[0] = __raw_readl(base + IC_CFG0RD);
	d[1] = __raw_readl(base + IC_CFG1RD);
	d[2] = __raw_readl(base + IC_CFG2RD);
	d[3] = __raw_readl(base + IC_SRCRD);
	d[4] = __raw_readl(base + IC_ASSIGNRD);
	d[5] = __raw_readl(base + IC_WAKERD);
	d[6] = __raw_readl(base + IC_MASKRD);
	ic_init(base);		/* shut it up too while at it */
}

static inline void alchemy_ic_resume_one(void __iomem *base, unsigned long *d)
{
	ic_init(base);

	__raw_writel(d[0], base + IC_CFG0SET);
	__raw_writel(d[1], base + IC_CFG1SET);
	__raw_writel(d[2], base + IC_CFG2SET);
	__raw_writel(d[3], base + IC_SRCSET);
	__raw_writel(d[4], base + IC_ASSIGNSET);
	__raw_writel(d[5], base + IC_WAKESET);
	wmb();

	__raw_writel(d[6], base + IC_MASKSET);
	wmb();
}

static int alchemy_ic_suspend(void)
{
	alchemy_ic_suspend_one((void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR),
			       alchemy_gpic_pmdata);
	alchemy_ic_suspend_one((void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR),
			       &alchemy_gpic_pmdata[7]);
	return 0;
}

static void alchemy_ic_resume(void)
{
	alchemy_ic_resume_one((void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR),
			      &alchemy_gpic_pmdata[7]);
	alchemy_ic_resume_one((void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR),
			      alchemy_gpic_pmdata);
}

static int alchemy_gpic_suspend(void)
{
	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1300_GPIC_PHYS_ADDR);
	int i;

	/* save 4 interrupt mask status registers */
	alchemy_gpic_pmdata[0] = __raw_readl(base + AU1300_GPIC_IEN + 0x0);
	alchemy_gpic_pmdata[1] = __raw_readl(base + AU1300_GPIC_IEN + 0x4);
	alchemy_gpic_pmdata[2] = __raw_readl(base + AU1300_GPIC_IEN + 0x8);
	alchemy_gpic_pmdata[3] = __raw_readl(base + AU1300_GPIC_IEN + 0xc);

	/* save misc register(s) */
	alchemy_gpic_pmdata[4] = __raw_readl(base + AU1300_GPIC_DMASEL);

	/* molto silenzioso */
	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x0);
	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x4);
	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x8);
	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0xc);
	wmb();

	/* save pin/int-type configuration */
	base += AU1300_GPIC_PINCFG;
	for (i = 0; i < ALCHEMY_GPIC_INT_NUM; i++)
		alchemy_gpic_pmdata[i + 5] = __raw_readl(base + (i << 2));

	wmb();

	return 0;
}

static void alchemy_gpic_resume(void)
{
	void __iomem *base = (void __iomem *)KSEG1ADDR(AU1300_GPIC_PHYS_ADDR);
	int i;

	/* disable all first */
	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x0);
	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x4);
	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0x8);
	__raw_writel(~0UL, base + AU1300_GPIC_IDIS + 0xc);
	wmb();

	/* restore pin/int-type configurations */
	base += AU1300_GPIC_PINCFG;
	for (i = 0; i < ALCHEMY_GPIC_INT_NUM; i++)
		__raw_writel(alchemy_gpic_pmdata[i + 5], base + (i << 2));
	wmb();

	/* restore misc register(s) */
	base = (void __iomem *)KSEG1ADDR(AU1300_GPIC_PHYS_ADDR);
	__raw_writel(alchemy_gpic_pmdata[4], base + AU1300_GPIC_DMASEL);
	wmb();

	/* finally restore masks */
	__raw_writel(alchemy_gpic_pmdata[0], base + AU1300_GPIC_IEN + 0x0);
	__raw_writel(alchemy_gpic_pmdata[1], base + AU1300_GPIC_IEN + 0x4);
	__raw_writel(alchemy_gpic_pmdata[2], base + AU1300_GPIC_IEN + 0x8);
	__raw_writel(alchemy_gpic_pmdata[3], base + AU1300_GPIC_IEN + 0xc);
	wmb();
}

static struct syscore_ops alchemy_ic_pmops = {
	.suspend	= alchemy_ic_suspend,
	.resume		= alchemy_ic_resume,
};

static struct syscore_ops alchemy_gpic_pmops = {
	.suspend	= alchemy_gpic_suspend,
	.resume		= alchemy_gpic_resume,
};

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

/* create chained handlers for the 4 IC requests to the MIPS IRQ ctrl */
#define DISP(name, base, addr)						      \
static void au1000_##name##_dispatch(struct irq_desc *d)		      \
{									      \
	unsigned long r = __raw_readl((void __iomem *)KSEG1ADDR(addr));	      \
	if (likely(r))							      \
		generic_handle_irq(base + __ffs(r));			      \
	else								      \
		spurious_interrupt();					      \
}

DISP(ic0r0, AU1000_INTC0_INT_BASE, AU1000_IC0_PHYS_ADDR + IC_REQ0INT)
DISP(ic0r1, AU1000_INTC0_INT_BASE, AU1000_IC0_PHYS_ADDR + IC_REQ1INT)
DISP(ic1r0, AU1000_INTC1_INT_BASE, AU1000_IC1_PHYS_ADDR + IC_REQ0INT)
DISP(ic1r1, AU1000_INTC1_INT_BASE, AU1000_IC1_PHYS_ADDR + IC_REQ1INT)

static void alchemy_gpic_dispatch(struct irq_desc *d)
{
	int i = __raw_readl(AU1300_GPIC_ADDR + AU1300_GPIC_PRIENC);
	generic_handle_irq(ALCHEMY_GPIC_INT_BASE + i);
}

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

static void __init au1000_init_irq(struct alchemy_irqmap *map)
{
	unsigned int bit, irq_nr;
	void __iomem *base;

	ic_init((void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR));
	ic_init((void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR));
	register_syscore_ops(&alchemy_ic_pmops);
	mips_cpu_irq_init();

	/* register all 64 possible IC0+IC1 irq sources as type "none".
	 * Use set_irq_type() to set edge/level behaviour at runtime.
	 */
	for (irq_nr = AU1000_INTC0_INT_BASE;
	     (irq_nr < AU1000_INTC0_INT_BASE + 32); irq_nr++)
		au1x_ic_settype(irq_get_irq_data(irq_nr), IRQ_TYPE_NONE);

	for (irq_nr = AU1000_INTC1_INT_BASE;
	     (irq_nr < AU1000_INTC1_INT_BASE + 32); irq_nr++)
		au1x_ic_settype(irq_get_irq_data(irq_nr), IRQ_TYPE_NONE);

	/*
	 * Initialize IC0, which is fixed per processor.
	 */
	while (map->irq != -1) {
		irq_nr = map->irq;

		if (irq_nr >= AU1000_INTC1_INT_BASE) {
			bit = irq_nr - AU1000_INTC1_INT_BASE;
			base = (void __iomem *)KSEG1ADDR(AU1000_IC1_PHYS_ADDR);
		} else {
			bit = irq_nr - AU1000_INTC0_INT_BASE;
			base = (void __iomem *)KSEG1ADDR(AU1000_IC0_PHYS_ADDR);
		}
		if (map->prio == 0)
			__raw_writel(1 << bit, base + IC_ASSIGNSET);

		au1x_ic_settype(irq_get_irq_data(irq_nr), map->type);
		++map;
	}

	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 2, au1000_ic0r0_dispatch);
	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 3, au1000_ic0r1_dispatch);
	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 4, au1000_ic1r0_dispatch);
	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 5, au1000_ic1r1_dispatch);
}

static void __init alchemy_gpic_init_irq(const struct alchemy_irqmap *dints)
{
	int i;
	void __iomem *bank_base;

	register_syscore_ops(&alchemy_gpic_pmops);
	mips_cpu_irq_init();

	/* disable & ack all possible interrupt sources */
	for (i = 0; i < 4; i++) {
		bank_base = AU1300_GPIC_ADDR + (i * 4);
		__raw_writel(~0UL, bank_base + AU1300_GPIC_IDIS);
		wmb();
		__raw_writel(~0UL, bank_base + AU1300_GPIC_IPEND);
		wmb();
	}

	/* register an irq_chip for them, with 2nd highest priority */
	for (i = ALCHEMY_GPIC_INT_BASE; i <= ALCHEMY_GPIC_INT_LAST; i++) {
		au1300_set_irq_priority(i, 1);
		au1300_gpic_settype(irq_get_irq_data(i), IRQ_TYPE_NONE);
	}

	/* setup known on-chip sources */
	while ((i = dints->irq) != -1) {
		au1300_gpic_settype(irq_get_irq_data(i), dints->type);
		au1300_set_irq_priority(i, dints->prio);

		if (dints->internal)
			au1300_pinfunc_to_dev(i - ALCHEMY_GPIC_INT_BASE);

		dints++;
	}

	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 2, alchemy_gpic_dispatch);
	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 3, alchemy_gpic_dispatch);
	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 4, alchemy_gpic_dispatch);
	irq_set_chained_handler(MIPS_CPU_IRQ_BASE + 5, alchemy_gpic_dispatch);
}

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

void __init arch_init_irq(void)
{
	switch (alchemy_get_cputype()) {
	case ALCHEMY_CPU_AU1000:
		au1000_init_irq(au1000_irqmap);
		break;
	case ALCHEMY_CPU_AU1500:
		au1000_init_irq(au1500_irqmap);
		break;
	case ALCHEMY_CPU_AU1100:
		au1000_init_irq(au1100_irqmap);
		break;
	case ALCHEMY_CPU_AU1550:
		au1000_init_irq(au1550_irqmap);
		break;
	case ALCHEMY_CPU_AU1200:
		au1000_init_irq(au1200_irqmap);
		break;
	case ALCHEMY_CPU_AU1300:
		alchemy_gpic_init_irq(au1300_irqmap);
		break;
	default:
		pr_err("unknown Alchemy IRQ core\n");
		break;
	}
}

asmlinkage void plat_irq_dispatch(void)
{
	unsigned long r = (read_c0_status() & read_c0_cause()) >> 8;
	do_IRQ(MIPS_CPU_IRQ_BASE + __ffs(r & 0xff));
}