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1 #ifndef _M68K_IRQ_H_
2 #define _M68K_IRQ_H_
3 
4 /*
5  * This should be the same as the max(NUM_X_SOURCES) for all the
6  * different m68k hosts compiled into the kernel.
7  * Currently the Atari has 72 and the Amiga 24, but if both are
8  * supported in the kernel it is better to make room for 72.
9  * With EtherNAT add-on card on Atari, the highest interrupt
10  * number is 140 so NR_IRQS needs to be 141.
11  */
12 #if defined(CONFIG_COLDFIRE)
13 #define NR_IRQS 256
14 #elif defined(CONFIG_VME) || defined(CONFIG_SUN3) || defined(CONFIG_SUN3X)
15 #define NR_IRQS 200
16 #elif defined(CONFIG_ATARI)
17 #define NR_IRQS 141
18 #elif defined(CONFIG_MAC)
19 #define NR_IRQS 72
20 #elif defined(CONFIG_Q40)
21 #define NR_IRQS	43
22 #elif defined(CONFIG_AMIGA) || !defined(CONFIG_MMU)
23 #define NR_IRQS	32
24 #elif defined(CONFIG_APOLLO)
25 #define NR_IRQS	24
26 #elif defined(CONFIG_HP300)
27 #define NR_IRQS	8
28 #else
29 #define NR_IRQS	0
30 #endif
31 
32 #if defined(CONFIG_M68020) || defined(CONFIG_M68030) || \
33     defined(CONFIG_M68040) || defined(CONFIG_M68060)
34 
35 /*
36  * Interrupt source definitions
37  * General interrupt sources are the level 1-7.
38  * Adding an interrupt service routine for one of these sources
39  * results in the addition of that routine to a chain of routines.
40  * Each one is called in succession.  Each individual interrupt
41  * service routine should determine if the device associated with
42  * that routine requires service.
43  */
44 
45 #define IRQ_SPURIOUS	0
46 
47 #define IRQ_AUTO_1	1	/* level 1 interrupt */
48 #define IRQ_AUTO_2	2	/* level 2 interrupt */
49 #define IRQ_AUTO_3	3	/* level 3 interrupt */
50 #define IRQ_AUTO_4	4	/* level 4 interrupt */
51 #define IRQ_AUTO_5	5	/* level 5 interrupt */
52 #define IRQ_AUTO_6	6	/* level 6 interrupt */
53 #define IRQ_AUTO_7	7	/* level 7 interrupt (non-maskable) */
54 
55 #define IRQ_USER	8
56 
57 struct irq_data;
58 struct irq_chip;
59 struct irq_desc;
60 extern unsigned int m68k_irq_startup(struct irq_data *data);
61 extern unsigned int m68k_irq_startup_irq(unsigned int irq);
62 extern void m68k_irq_shutdown(struct irq_data *data);
63 extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int,
64 						      struct pt_regs *));
65 extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt);
66 extern void m68k_setup_irq_controller(struct irq_chip *,
67 				      void (*handle)(struct irq_desc *desc),
68 				      unsigned int irq, unsigned int cnt);
69 
70 extern unsigned int irq_canonicalize(unsigned int irq);
71 
72 #else
73 #define irq_canonicalize(irq)  (irq)
74 #endif /* !(CONFIG_M68020 || CONFIG_M68030 || CONFIG_M68040 || CONFIG_M68060) */
75 
76 asmlinkage void do_IRQ(int irq, struct pt_regs *regs);
77 extern atomic_t irq_err_count;
78 
79 #endif /* _M68K_IRQ_H_ */
80