1#ifndef _ALPHA_IRQ_H
2#define _ALPHA_IRQ_H
3
4/*
5 *	linux/include/alpha/irq.h
6 *
7 *	(C) 1994 Linus Torvalds
8 */
9
10#include <linux/linkage.h>
11#include <linux/config.h>
12
13#if   defined(CONFIG_ALPHA_GENERIC)
14
15/* Here NR_IRQS is not exact, but rather an upper bound.  This is used
16   many places throughout the kernel to size static arrays.  That's ok,
17   we'll use alpha_mv.nr_irqs when we want the real thing.  */
18
19# define NR_IRQS	2048 /* enuff for WILDFIRE with 8 QBBs */
20
21#elif defined(CONFIG_ALPHA_CABRIOLET) || \
22      defined(CONFIG_ALPHA_EB66P)     || \
23      defined(CONFIG_ALPHA_EB164)     || \
24      defined(CONFIG_ALPHA_PC164)     || \
25      defined(CONFIG_ALPHA_LX164)
26# define NR_IRQS	35
27
28#elif defined(CONFIG_ALPHA_EB66)      || \
29      defined(CONFIG_ALPHA_EB64P)     || \
30      defined(CONFIG_ALPHA_MIKASA)
31# define NR_IRQS	32
32
33#elif defined(CONFIG_ALPHA_ALCOR)     || \
34      defined(CONFIG_ALPHA_XLT)       || \
35      defined(CONFIG_ALPHA_MIATA)     || \
36      defined(CONFIG_ALPHA_RUFFIAN)   || \
37      defined(CONFIG_ALPHA_RX164)     || \
38      defined(CONFIG_ALPHA_NORITAKE)
39# define NR_IRQS	48
40
41#elif defined(CONFIG_ALPHA_SABLE)     || \
42      defined(CONFIG_ALPHA_SX164)
43# define NR_IRQS	40
44
45#elif defined(CONFIG_ALPHA_DP264) || \
46      defined(CONFIG_ALPHA_SHARK) || \
47      defined(CONFIG_ALPHA_EIGER)
48# define NR_IRQS	64
49
50#elif defined(CONFIG_ALPHA_TITAN)
51#define NR_IRQS		80
52
53#elif defined(CONFIG_ALPHA_RAWHIDE) || \
54	defined(CONFIG_ALPHA_TAKARA)
55# define NR_IRQS	128
56
57#elif defined(CONFIG_ALPHA_WILDFIRE)
58# define NR_IRQS	2048 /* enuff for 8 QBBs */
59
60#else /* everyone else */
61# define NR_IRQS	16
62#endif
63
64static __inline__ int irq_cannonicalize(int irq)
65{
66	return ((irq == 2) ? 9 : irq);
67}
68
69extern void disable_irq(unsigned int);
70extern void disable_irq_nosync(unsigned int);
71extern void enable_irq(unsigned int);
72
73struct pt_regs;
74extern void (*perf_irq)(unsigned long, struct pt_regs *);
75
76
77#endif /* _ALPHA_IRQ_H */
78