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
12#if   defined(CONFIG_ALPHA_GENERIC)
13
14/* Here NR_IRQS is not exact, but rather an upper bound.  This is used
15   many places throughout the kernel to size static arrays.  That's ok,
16   we'll use alpha_mv.nr_irqs when we want the real thing.  */
17
18/* When LEGACY_START_ADDRESS is selected, we leave out:
19     TITAN
20     WILDFIRE
21     MARVEL
22
23   This helps keep the kernel object size reasonable for the majority
24   of machines.
25*/
26
27# if defined(CONFIG_ALPHA_LEGACY_START_ADDRESS)
28#  define NR_IRQS      (128)           /* max is RAWHIDE/TAKARA */
29# else
30#  define NR_IRQS      (32768 + 16)    /* marvel - 32 pids */
31# endif
32
33#elif defined(CONFIG_ALPHA_CABRIOLET) || \
34      defined(CONFIG_ALPHA_EB66P)     || \
35      defined(CONFIG_ALPHA_EB164)     || \
36      defined(CONFIG_ALPHA_PC164)     || \
37      defined(CONFIG_ALPHA_LX164)
38# define NR_IRQS	35
39
40#elif defined(CONFIG_ALPHA_EB66)      || \
41      defined(CONFIG_ALPHA_EB64P)     || \
42      defined(CONFIG_ALPHA_MIKASA)
43# define NR_IRQS	32
44
45#elif defined(CONFIG_ALPHA_ALCOR)     || \
46      defined(CONFIG_ALPHA_MIATA)     || \
47      defined(CONFIG_ALPHA_RUFFIAN)   || \
48      defined(CONFIG_ALPHA_RX164)     || \
49      defined(CONFIG_ALPHA_NORITAKE)
50# define NR_IRQS	48
51
52#elif defined(CONFIG_ALPHA_SABLE)     || \
53      defined(CONFIG_ALPHA_SX164)
54# define NR_IRQS	40
55
56#elif defined(CONFIG_ALPHA_DP264) || \
57      defined(CONFIG_ALPHA_LYNX)  || \
58      defined(CONFIG_ALPHA_SHARK) || \
59      defined(CONFIG_ALPHA_EIGER)
60# define NR_IRQS	64
61
62#elif defined(CONFIG_ALPHA_TITAN)
63#define NR_IRQS		80
64
65#elif defined(CONFIG_ALPHA_RAWHIDE) || \
66	defined(CONFIG_ALPHA_TAKARA)
67# define NR_IRQS	128
68
69#elif defined(CONFIG_ALPHA_WILDFIRE)
70# define NR_IRQS	2048 /* enuff for 8 QBBs */
71
72#elif defined(CONFIG_ALPHA_MARVEL)
73# define NR_IRQS	(32768 + 16) 	/* marvel - 32 pids*/
74
75#else /* everyone else */
76# define NR_IRQS	16
77#endif
78
79static __inline__ int irq_canonicalize(int irq)
80{
81	return ((irq == 2) ? 9 : irq);
82}
83
84extern void disable_irq(unsigned int);
85extern void disable_irq_nosync(unsigned int);
86extern void enable_irq(unsigned int);
87
88struct pt_regs;
89extern void (*perf_irq)(unsigned long, struct pt_regs *);
90
91#endif /* _ALPHA_IRQ_H */
92