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1da177e4 LT |
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 | /* When LEGACY_START_ADDRESS is selected, we leave out: | |
20 | TITAN | |
21 | WILDFIRE | |
22 | MARVEL | |
23 | ||
24 | This helps keep the kernel object size reasonable for the majority | |
25 | of machines. | |
26 | */ | |
27 | ||
28 | # if defined(CONFIG_ALPHA_LEGACY_START_ADDRESS) | |
29 | # define NR_IRQS (128) /* max is RAWHIDE/TAKARA */ | |
30 | # else | |
31 | # define NR_IRQS (32768 + 16) /* marvel - 32 pids */ | |
32 | # endif | |
33 | ||
34 | #elif defined(CONFIG_ALPHA_CABRIOLET) || \ | |
35 | defined(CONFIG_ALPHA_EB66P) || \ | |
36 | defined(CONFIG_ALPHA_EB164) || \ | |
37 | defined(CONFIG_ALPHA_PC164) || \ | |
38 | defined(CONFIG_ALPHA_LX164) | |
39 | # define NR_IRQS 35 | |
40 | ||
41 | #elif defined(CONFIG_ALPHA_EB66) || \ | |
42 | defined(CONFIG_ALPHA_EB64P) || \ | |
43 | defined(CONFIG_ALPHA_MIKASA) | |
44 | # define NR_IRQS 32 | |
45 | ||
46 | #elif defined(CONFIG_ALPHA_ALCOR) || \ | |
47 | defined(CONFIG_ALPHA_MIATA) || \ | |
48 | defined(CONFIG_ALPHA_RUFFIAN) || \ | |
49 | defined(CONFIG_ALPHA_RX164) || \ | |
50 | defined(CONFIG_ALPHA_NORITAKE) | |
51 | # define NR_IRQS 48 | |
52 | ||
53 | #elif defined(CONFIG_ALPHA_SABLE) || \ | |
54 | defined(CONFIG_ALPHA_SX164) | |
55 | # define NR_IRQS 40 | |
56 | ||
57 | #elif defined(CONFIG_ALPHA_DP264) || \ | |
58 | defined(CONFIG_ALPHA_LYNX) || \ | |
59 | defined(CONFIG_ALPHA_SHARK) || \ | |
60 | defined(CONFIG_ALPHA_EIGER) | |
61 | # define NR_IRQS 64 | |
62 | ||
63 | #elif defined(CONFIG_ALPHA_TITAN) | |
64 | #define NR_IRQS 80 | |
65 | ||
66 | #elif defined(CONFIG_ALPHA_RAWHIDE) || \ | |
67 | defined(CONFIG_ALPHA_TAKARA) | |
68 | # define NR_IRQS 128 | |
69 | ||
70 | #elif defined(CONFIG_ALPHA_WILDFIRE) | |
71 | # define NR_IRQS 2048 /* enuff for 8 QBBs */ | |
72 | ||
73 | #elif defined(CONFIG_ALPHA_MARVEL) | |
74 | # define NR_IRQS (32768 + 16) /* marvel - 32 pids*/ | |
75 | ||
76 | #else /* everyone else */ | |
77 | # define NR_IRQS 16 | |
78 | #endif | |
79 | ||
80 | static __inline__ int irq_canonicalize(int irq) | |
81 | { | |
82 | /* | |
83 | * XXX is this true for all Alpha's? The old serial driver | |
84 | * did it this way for years without any complaints, so.... | |
85 | */ | |
86 | return ((irq == 2) ? 9 : irq); | |
87 | } | |
88 | ||
89 | extern void disable_irq(unsigned int); | |
90 | extern void disable_irq_nosync(unsigned int); | |
91 | extern void enable_irq(unsigned int); | |
92 | ||
93 | struct pt_regs; | |
94 | extern void (*perf_irq)(unsigned long, struct pt_regs *); | |
95 | ||
96 | struct irqaction; | |
97 | int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *); | |
98 | ||
99 | ||
100 | #endif /* _ALPHA_IRQ_H */ |