summaryrefslogtreecommitdiffstats
path: root/include/asm-powerpc/irq.h
blob: b3935ea28fff181a4b3a30bb0d485b3eab15e9ad (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
#ifdef __KERNEL__
#ifndef _ASM_POWERPC_IRQ_H
#define _ASM_POWERPC_IRQ_H

/*
 * 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.
 */

#include <linux/config.h>
#include <linux/threads.h>

#include <asm/types.h>
#include <asm/atomic.h>

/* this number is used when no interrupt has been assigned */
#define NO_IRQ			(-1)

/*
 * These constants are used for passing information about interrupt
 * signal polarity and level/edge sensing to the low-level PIC chip
 * drivers.
 */
#define IRQ_SENSE_MASK		0x1
#define IRQ_SENSE_LEVEL		0x1	/* interrupt on active level */
#define IRQ_SENSE_EDGE		0x0	/* interrupt triggered by edge */

#define IRQ_POLARITY_MASK	0x2
#define IRQ_POLARITY_POSITIVE	0x2	/* high level or low->high edge */
#define IRQ_POLARITY_NEGATIVE	0x0	/* low level or high->low edge */

/*
 * IRQ line status macro IRQ_PER_CPU is used
 */
#define ARCH_HAS_IRQ_PER_CPU

#define get_irq_desc(irq) (&irq_desc[(irq)])

/* Define a way to iterate across irqs. */
#define for_each_irq(i) \
	for ((i) = 0; (i) < NR_IRQS; ++(i))

#ifdef CONFIG_PPC64

/*
 * Maximum number of interrupt sources that we can handle.
 */
#define NR_IRQS		512

/* Interrupt numbers are virtual in case they are sparsely
 * distributed by the hardware.
 */
extern unsigned int virt_irq_to_real_map[NR_IRQS];

/* Create a mapping for a real_irq if it doesn't already exist.
 * Return the virtual irq as a convenience.
 */
int virt_irq_create_mapping(unsigned int real_irq);
void virt_irq_init(void);

static inline unsigned int virt_irq_to_real(unsigned int virt_irq)
{
	return virt_irq_to_real_map[virt_irq];
}

extern unsigned int real_irq_to_virt_slowpath(unsigned int real_irq);

/*
 * List of interrupt controllers.
 */
#define IC_INVALID    0
#define IC_OPEN_PIC   1
#define IC_PPC_XIC    2
#define IC_CELL_PIC   3
#define IC_ISERIES    4

extern u64 ppc64_interrupt_controller;

#else /* 32-bit */

#if defined(CONFIG_40x)
#include <asm/ibm4xx.h>

#ifndef NR_BOARD_IRQS
#define NR_BOARD_IRQS 0
#endif

#ifndef UIC_WIDTH /* Number of interrupts per device */
#define UIC_WIDTH 32
#endif

#ifndef NR_UICS /* number  of UIC devices */
#define NR_UICS 1
#endif

#if defined (CONFIG_403)
/*
 * The PowerPC 403 cores' Asynchronous Interrupt Controller (AIC) has
 * 32 possible interrupts, a majority of which are not implemented on
 * all cores. There are six configurable, external interrupt pins and
 * there are eight internal interrupts for the on-chip serial port
 * (SPU), DMA controller, and JTAG controller.
 *
 */

#define	NR_AIC_IRQS 32
#define	NR_IRQS	 (NR_AIC_IRQS + NR_BOARD_IRQS)

#elif !defined (CONFIG_403)

/*
 *  The PowerPC 405 cores' Universal Interrupt Controller (UIC) has 32
 * possible interrupts as well. There are seven, configurable external
 * interrupt pins and there are 17 internal interrupts for the on-chip
 * serial port, DMA controller, on-chip Ethernet controller, PCI, etc.
 *
 */


#define NR_UIC_IRQS UIC_WIDTH
#define NR_IRQS		((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS)
#endif

#elif defined(CONFIG_44x)
#include <asm/ibm44x.h>

#define	NR_UIC_IRQS	32
#define	NR_IRQS		((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS)

#elif defined(CONFIG_8xx)

/* Now include the board configuration specific associations.
*/
#include <asm/mpc8xx.h>

/* The MPC8xx cores have 16 possible interrupts.  There are eight
 * possible level sensitive interrupts assigned and generated internally
 * from such devices as CPM, PCMCIA, RTC, PIT, TimeBase and Decrementer.
 * There are eight external interrupts (IRQs) that can be configured
 * as either level or edge sensitive.
 *
 * On some implementations, there is also the possibility of an 8259
 * through the PCI and PCI-ISA bridges.
 *
 * We are "flattening" the interrupt vectors of the cascaded CPM
 * and 8259 interrupt controllers so that we can uniquely identify
 * any interrupt source with a single integer.
 */
#define NR_SIU_INTS	16
#define NR_CPM_INTS	32
#ifndef NR_8259_INTS
#define NR_8259_INTS 0
#endif

#define SIU_IRQ_OFFSET		0
#define CPM_IRQ_OFFSET		(SIU_IRQ_OFFSET + NR_SIU_INTS)
#define I8259_IRQ_OFFSET	(CPM_IRQ_OFFSET + NR_CPM_INTS)

#define NR_IRQS	(NR_SIU_INTS + NR_CPM_INTS + NR_8259_INTS)

/* These values must be zero-based and map 1:1 with the SIU configuration.
 * They are used throughout the 8xx I/O subsystem to generate
 * interrupt masks, flags, and other control patterns.  This is why the
 * current kernel assumption of the 8259 as the base controller is such
 * a pain in the butt.
 */
#define	SIU_IRQ0	(0)	/* Highest priority */
#define	SIU_LEVEL0	(1)
#define	SIU_IRQ1	(2)
#define	SIU_LEVEL1	(3)
#define	SIU_IRQ2	(4)
#define	SIU_LEVEL2	(5)
#define	SIU_IRQ3	(6)
#define	SIU_LEVEL3	(7)
#define	SIU_IRQ4	(8)
#define	SIU_LEVEL4	(9)
#define	SIU_IRQ5	(10)
#define	SIU_LEVEL5	(11)
#define	SIU_IRQ6	(12)
#define	SIU_LEVEL6	(13)
#define	SIU_IRQ7	(14)
#define	SIU_LEVEL7	(15)

#define MPC8xx_INT_FEC1		SIU_LEVEL1
#define MPC8xx_INT_FEC2		SIU_LEVEL3

#define MPC8xx_INT_SCC1		(CPM_IRQ_OFFSET + CPMVEC_SCC1)
#define MPC8xx_INT_SCC2		(CPM_IRQ_OFFSET + CPMVEC_SCC2)
#define MPC8xx_INT_SCC3		(CPM_IRQ_OFFSET + CPMVEC_SCC3)
#define MPC8xx_INT_SCC4		(CPM_IRQ_OFFSET + CPMVEC_SCC4)
#define MPC8xx_INT_SMC1		(CPM_IRQ_OFFSET + CPMVEC_SMC1)
#define MPC8xx_INT_SMC2		(CPM_IRQ_OFFSET + CPMVEC_SMC2)

/* The internal interrupts we can configure as we see fit.
 * My personal preference is CPM at level 2, which puts it above the
 * MBX PCI/ISA/IDE interrupts.
 */
#ifndef PIT_INTERRUPT
#define PIT_INTERRUPT		SIU_LEVEL0
#endif
#ifndef	CPM_INTERRUPT
#define CPM_INTERRUPT		SIU_LEVEL2
#endif
#ifndef	PCMCIA_INTERRUPT
#define PCMCIA_INTERRUPT	SIU_LEVEL6
#endif
#ifndef	DEC_INTERRUPT
#define DEC_INTERRUPT		SIU_LEVEL7
#endif

/* Some internal interrupt registers use an 8-bit mask for the interrupt
 * level instead of a number.
 */
#define	mk_int_int_mask(IL) (1 << (7 - (IL/2)))

#elif defined(CONFIG_83xx)
#include <asm/mpc83xx.h>

#define	NR_IRQS	(NR_IPIC_INTS)

#elif defined(CONFIG_85xx)
/* Now include the board configuration specific associations.
*/
#include <asm/mpc85xx.h>

/* The MPC8548 openpic has 48 internal interrupts and 12 external
 * interrupts.
 *
 * We are "flattening" the interrupt vectors of the cascaded CPM
 * so that we can uniquely identify any interrupt source with a
 * single integer.
 */
#define NR_CPM_INTS	64
#define NR_EPIC_INTS	60
#ifndef NR_8259_INTS
#define NR_8259_INTS	0
#endif
#define NUM_8259_INTERRUPTS NR_8259_INTS

#ifndef CPM_IRQ_OFFSET
#define CPM_IRQ_OFFSET	0
#endif

#define NR_IRQS	(NR_EPIC_INTS + NR_CPM_INTS + NR_8259_INTS)

/* Internal IRQs on MPC85xx OpenPIC */

#ifndef MPC85xx_OPENPIC_IRQ_OFFSET
#ifdef CONFIG_CPM2
#define MPC85xx_OPENPIC_IRQ_OFFSET	(CPM_IRQ_OFFSET + NR_CPM_INTS)
#else
#define MPC85xx_OPENPIC_IRQ_OFFSET	0
#endif
#endif

/* Not all of these exist on all MPC85xx implementations */
#define MPC85xx_IRQ_L2CACHE	( 0 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_ECM		( 1 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_DDR		( 2 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_LBIU	( 3 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_DMA0	( 4 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_DMA1	( 5 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_DMA2	( 6 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_DMA3	( 7 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_PCI1	( 8 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_PCI2	( 9 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_RIO_ERROR	( 9 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_RIO_BELL	(10 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_RIO_TX	(11 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_RIO_RX	(12 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC1_TX	(13 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC1_RX	(14 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC3_TX	(15 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC3_RX	(16 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC3_ERROR	(17 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC1_ERROR	(18 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC2_TX	(19 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC2_RX	(20 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC4_TX	(21 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC4_RX	(22 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC4_ERROR	(23 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC2_ERROR	(24 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_FEC		(25 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_DUART	(26 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_IIC1	(27 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_PERFMON	(28 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_SEC2	(29 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_CPM		(30 + MPC85xx_OPENPIC_IRQ_OFFSET)

/* The 12 external interrupt lines */
#define MPC85xx_IRQ_EXT0        (48 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT1        (49 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT2        (50 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT3        (51 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT4        (52 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT5        (53 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT6        (54 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT7        (55 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT8        (56 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT9        (57 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT10       (58 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT11       (59 + MPC85xx_OPENPIC_IRQ_OFFSET)

/* CPM related interrupts */
#define	SIU_INT_ERROR		((uint)0x00+CPM_IRQ_OFFSET)
#define	SIU_INT_I2C		((uint)0x01+CPM_IRQ_OFFSET)
#define	SIU_INT_SPI		((uint)0x02+CPM_IRQ_OFFSET)
#define	SIU_INT_RISC		((uint)0x03+CPM_IRQ_OFFSET)
#define	SIU_INT_SMC1		((uint)0x04+CPM_IRQ_OFFSET)
#define	SIU_INT_SMC2		((uint)0x05+CPM_IRQ_OFFSET)
#define	SIU_INT_USB		((uint)0x0b+CPM_IRQ_OFFSET)
#define	SIU_INT_TIMER1		((uint)0x0c+CPM_IRQ_OFFSET)
#define	SIU_INT_TIMER2		((uint)0x0d+CPM_IRQ_OFFSET)
#define	SIU_INT_TIMER3		((uint)0x0e+CPM_IRQ_OFFSET)
#define	SIU_INT_TIMER4		((uint)0x0f+CPM_IRQ_OFFSET)
#define	SIU_INT_FCC1		((uint)0x20+CPM_IRQ_OFFSET)
#define	SIU_INT_FCC2		((uint)0x21+CPM_IRQ_OFFSET)
#define	SIU_INT_FCC3		((uint)0x22+CPM_IRQ_OFFSET)
#define	SIU_INT_MCC1		((uint)0x24+CPM_IRQ_OFFSET)
#define	SIU_INT_MCC2		((uint)0x25+CPM_IRQ_OFFSET)
#define	SIU_INT_SCC1		((uint)0x28+CPM_IRQ_OFFSET)
#define	SIU_INT_SCC2		((uint)0x29+CPM_IRQ_OFFSET)
#define	SIU_INT_SCC3		((uint)0x2a+CPM_IRQ_OFFSET)
#define	SIU_INT_SCC4		((uint)0x2b+CPM_IRQ_OFFSET)
#define	SIU_INT_PC15		((uint)0x30+CPM_IRQ_OFFSET)
#define	SIU_INT_PC14		((uint)0x31+CPM_IRQ_OFFSET)
#define	SIU_INT_PC13		((uint)0x32+CPM_IRQ_OFFSET)
#define	SIU_INT_PC12		((uint)0x33+CPM_IRQ_OFFSET)
#define	SIU_INT_PC11		((uint)0x34+CPM_IRQ_OFFSET)
#define	SIU_INT_PC10		((uint)0x35+CPM_IRQ_OFFSET)
#define	SIU_INT_PC9		((uint)0x36+CPM_IRQ_OFFSET)
#define	SIU_INT_PC8		((uint)0x37+CPM_IRQ_OFFSET)
#define	SIU_INT_PC7		((uint)0x38+CPM_IRQ_OFFSET)
#define	SIU_INT_PC6		((uint)0x39+CPM_IRQ_OFFSET)
#define	SIU_INT_PC5		((uint)0x3a+CPM_IRQ_OFFSET)
#define	SIU_INT_PC4		((uint)0x3b+CPM_IRQ_OFFSET)
#define	SIU_INT_PC3		((uint)0x3c+CPM_IRQ_OFFSET)
#define	SIU_INT_PC2		((uint)0x3d+CPM_IRQ_OFFSET)
#define	SIU_INT_PC1		((uint)0x3e+CPM_IRQ_OFFSET)
#define	SIU_INT_PC0		((uint)0x3f+CPM_IRQ_OFFSET)

#else /* CONFIG_40x + CONFIG_8xx */
/*
 * this is the # irq's for all ppc arch's (pmac/chrp/prep)
 * so it is the max of them all
 */
#define NR_IRQS			256
#define __DO_IRQ_CANON	1

#ifndef CONFIG_8260

#define NUM_8259_INTERRUPTS	16

#else /* CONFIG_8260 */

/* The 8260 has an internal interrupt controller with a maximum of
 * 64 IRQs.  We will use NR_IRQs from above since it is large enough.
 * Don't be confused by the 8260 documentation where they list an
 * "interrupt number" and "interrupt vector".  We are only interested
 * in the interrupt vector.  There are "reserved" holes where the
 * vector number increases, but the interrupt number in the table does not.
 * (Document errata updates have fixed this...make sure you have up to
 * date processor documentation -- Dan).
 */

#ifndef CPM_IRQ_OFFSET
#define CPM_IRQ_OFFSET	0
#endif

#define NR_CPM_INTS	64

#define	SIU_INT_ERROR		((uint)0x00 + CPM_IRQ_OFFSET)
#define	SIU_INT_I2C		((uint)0x01 + CPM_IRQ_OFFSET)
#define	SIU_INT_SPI		((uint)0x02 + CPM_IRQ_OFFSET)
#define	SIU_INT_RISC		((uint)0x03 + CPM_IRQ_OFFSET)
#define	SIU_INT_SMC1		((uint)0x04 + CPM_IRQ_OFFSET)
#define	SIU_INT_SMC2		((uint)0x05 + CPM_IRQ_OFFSET)
#define	SIU_INT_IDMA1		((uint)0x06 + CPM_IRQ_OFFSET)
#define	SIU_INT_IDMA2		((uint)0x07 + CPM_IRQ_OFFSET)
#define	SIU_INT_IDMA3		((uint)0x08 + CPM_IRQ_OFFSET)
#define	SIU_INT_IDMA4		((uint)0x09 + CPM_IRQ_OFFSET)
#define	SIU_INT_SDMA		((uint)0x0a + CPM_IRQ_OFFSET)
#define	SIU_INT_USB		((uint)0x0b + CPM_IRQ_OFFSET)
#define	SIU_INT_TIMER1		((uint)0x0c + CPM_IRQ_OFFSET)
#define	SIU_INT_TIMER2		((uint)0x0d + CPM_IRQ_OFFSET)
#define	SIU_INT_TIMER3		((uint)0x0e + CPM_IRQ_OFFSET)
#define	SIU_INT_TIMER4		((uint)0x0f + CPM_IRQ_OFFSET)
#define	SIU_INT_TMCNT		((uint)0x10 + CPM_IRQ_OFFSET)
#define	SIU_INT_PIT		((uint)0x11 + CPM_IRQ_OFFSET)
#define	SIU_INT_IRQ1		((uint)0x13 + CPM_IRQ_OFFSET)
#define	SIU_INT_IRQ2		((uint)0x14 + CPM_IRQ_OFFSET)
#define	SIU_INT_IRQ3		((uint)0x15 + CPM_IRQ_OFFSET)
#define	SIU_INT_IRQ4		((uint)0x16 + CPM_IRQ_OFFSET)
#define	SIU_INT_IRQ5		((uint)0x17 + CPM_IRQ_OFFSET)
#define	SIU_INT_IRQ6		((uint)0x18 + CPM_IRQ_OFFSET)
#define	SIU_INT_IRQ7		((uint)0x19 + CPM_IRQ_OFFSET)
#define	SIU_INT_FCC1		((uint)0x20 + CPM_IRQ_OFFSET)
#define	SIU_INT_FCC2		((uint)0x21 + CPM_IRQ_OFFSET)
#define	SIU_INT_FCC3		((uint)0x22 + CPM_IRQ_OFFSET)
#define	SIU_INT_MCC1		((uint)0x24 + CPM_IRQ_OFFSET)
#define	SIU_INT_MCC2		((uint)0x25 + CPM_IRQ_OFFSET)
#define	SIU_INT_SCC1		((uint)0x28 + CPM_IRQ_OFFSET)
#define	SIU_INT_SCC2		((uint)0x29 + CPM_IRQ_OFFSET)
#define	SIU_INT_SCC3		((uint)0x2a + CPM_IRQ_OFFSET)
#define	SIU_INT_SCC4		((uint)0x2b + CPM_IRQ_OFFSET)
#define	SIU_INT_PC15		((uint)0x30 + CPM_IRQ_OFFSET)
#define	SIU_INT_PC14		((uint)0x31 + CPM_IRQ_OFFSET)
#define	SIU_INT_PC13		((uint)0x32 + CPM_IRQ_OFFSET)
#define	SIU_INT_PC12		((uint)0x33 + CPM_IRQ_OFFSET)
#define	SIU_INT_PC11		((uint)0x34 + CPM_IRQ_OFFSET)
#define	SIU_INT_PC10		((uint)0x35 + CPM_IRQ_OFFSET)
#define	SIU_INT_PC9		((uint)0x36 + CPM_IRQ_OFFSET)
#define	SIU_INT_PC8		((uint)0x37 + CPM_IRQ_OFFSET)
#define	SIU_INT_PC7		((uint)0x38 + CPM_IRQ_OFFSET)
#define	SIU_INT_PC6		((uint)0x39 + CPM_IRQ_OFFSET)
#define	SIU_INT_PC5		((uint)0x3a + CPM_IRQ_OFFSET)
#define	SIU_INT_PC4		((uint)0x3b + CPM_IRQ_OFFSET)
#define	SIU_INT_PC3		((uint)0x3c + CPM_IRQ_OFFSET)
#define	SIU_INT_PC2		((uint)0x3d + CPM_IRQ_OFFSET)
#define	SIU_INT_PC1		((uint)0x3e + CPM_IRQ_OFFSET)
#define	SIU_INT_PC0		((uint)0x3f + CPM_IRQ_OFFSET)

#endif /* CONFIG_8260 */

#endif

#define NR_MASK_WORDS	((NR_IRQS + 31) / 32)
/* pedantic: these are long because they are used with set_bit --RR */
extern unsigned long ppc_cached_irq_mask[NR_MASK_WORDS];
extern unsigned long ppc_lost_interrupts[NR_MASK_WORDS];
extern atomic_t ppc_n_lost_interrupts;

#define virt_irq_create_mapping(x)	(x)

#endif

/*
 * Because many systems have two overlapping names spaces for
 * interrupts (ISA and XICS for example), and the ISA interrupts
 * have historically not been easy to renumber, we allow ISA
 * interrupts to take values 0 - 15, and shift up the remaining
 * interrupts by 0x10.
 */
#define NUM_ISA_INTERRUPTS	0x10
extern int __irq_offset_value;

static inline int irq_offset_up(int irq)
{
	return(irq + __irq_offset_value);
}

static inline int irq_offset_down(int irq)
{
	return(irq - __irq_offset_value);
}

static inline int irq_offset_value(void)
{
	return __irq_offset_value;
}

#ifdef __DO_IRQ_CANON
extern int ppc_do_canonicalize_irqs;
#else
#define ppc_do_canonicalize_irqs	0
#endif

static __inline__ int irq_canonicalize(int irq)
{
	if (ppc_do_canonicalize_irqs && irq == 2)
		irq = 9;
	return irq;
}

extern int distribute_irqs;

struct irqaction;
struct pt_regs;

#ifdef CONFIG_IRQSTACKS
/*
 * Per-cpu stacks for handling hard and soft interrupts.
 */
extern struct thread_info *hardirq_ctx[NR_CPUS];
extern struct thread_info *softirq_ctx[NR_CPUS];

extern void irq_ctx_init(void);
extern void call_do_softirq(struct thread_info *tp);
extern int call_handle_IRQ_event(int irq, struct pt_regs *regs,
			struct irqaction *action, struct thread_info *tp);

#define __ARCH_HAS_DO_SOFTIRQ

#else
#define irq_ctx_init()

#endif /* CONFIG_IRQSTACKS */

extern void do_IRQ(struct pt_regs *regs);

#endif /* _ASM_IRQ_H */
#endif /* __KERNEL__ */
OpenPOWER on IntegriCloud