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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070011
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 /*
82 * XXX is this true for all Alpha's? The old serial driver
83 * did it this way for years without any complaints, so....
84 */
85 return ((irq == 2) ? 9 : irq);
86}
87
88extern void disable_irq(unsigned int);
89extern void disable_irq_nosync(unsigned int);
90extern void enable_irq(unsigned int);
91
92struct pt_regs;
93extern void (*perf_irq)(unsigned long, struct pt_regs *);
94
Linus Torvalds1da177e2005-04-16 15:20:36 -070095#endif /* _ALPHA_IRQ_H */