1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _M68K_IRQ_H_
3 #define _M68K_IRQ_H_
4 
5 /*
6  * This should be the same as the max(NUM_X_SOURCES) for all the
7  * different m68k hosts compiled into the kernel.
8  * Currently the Atari has 72 and the Amiga 24, but if both are
9  * supported in the kernel it is better to make room for 72.
10  * With EtherNAT add-on card on Atari, the highest interrupt
11  * number is 140 so NR_IRQS needs to be 141.
12  */
13 #if defined(CONFIG_COLDFIRE)
14 #define NR_IRQS 256
15 #elif defined(CONFIG_VME) || defined(CONFIG_SUN3) || defined(CONFIG_SUN3X)
16 #define NR_IRQS 200
17 #elif defined(CONFIG_ATARI)
18 #define NR_IRQS 141
19 #elif defined(CONFIG_MAC)
20 #define NR_IRQS 72
21 #elif defined(CONFIG_Q40)
22 #define NR_IRQS	43
23 #elif defined(CONFIG_AMIGA) || !defined(CONFIG_MMU)
24 #define NR_IRQS	32
25 #elif defined(CONFIG_APOLLO)
26 #define NR_IRQS	24
27 #elif defined(CONFIG_HP300)
28 #define NR_IRQS	8
29 #else
30 #define NR_IRQS	0
31 #endif
32 
33 #if defined(CONFIG_M68020) || defined(CONFIG_M68030) || \
34     defined(CONFIG_M68040) || defined(CONFIG_M68060)
35 
36 /*
37  * Interrupt source definitions
38  * General interrupt sources are the level 1-7.
39  * Adding an interrupt service routine for one of these sources
40  * results in the addition of that routine to a chain of routines.
41  * Each one is called in succession.  Each individual interrupt
42  * service routine should determine if the device associated with
43  * that routine requires service.
44  */
45 
46 #define IRQ_SPURIOUS	0
47 
48 #define IRQ_AUTO_1	1	/* level 1 interrupt */
49 #define IRQ_AUTO_2	2	/* level 2 interrupt */
50 #define IRQ_AUTO_3	3	/* level 3 interrupt */
51 #define IRQ_AUTO_4	4	/* level 4 interrupt */
52 #define IRQ_AUTO_5	5	/* level 5 interrupt */
53 #define IRQ_AUTO_6	6	/* level 6 interrupt */
54 #define IRQ_AUTO_7	7	/* level 7 interrupt (non-maskable) */
55 
56 #define IRQ_USER	8
57 
58 struct irq_data;
59 struct irq_chip;
60 struct irq_desc;
61 extern unsigned int m68k_irq_startup(struct irq_data *data);
62 extern unsigned int m68k_irq_startup_irq(unsigned int irq);
63 extern void m68k_irq_shutdown(struct irq_data *data);
64 extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int,
65 						      struct pt_regs *));
66 extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt);
67 extern void m68k_setup_irq_controller(struct irq_chip *,
68 				      void (*handle)(struct irq_desc *desc),
69 				      unsigned int irq, unsigned int cnt);
70 
71 extern unsigned int irq_canonicalize(unsigned int irq);
72 
73 #else
74 #define irq_canonicalize(irq)  (irq)
75 #endif /* !(CONFIG_M68020 || CONFIG_M68030 || CONFIG_M68040 || CONFIG_M68060) */
76 
77 asmlinkage void do_IRQ(int irq, struct pt_regs *regs);
78 extern atomic_t irq_err_count;
79 
80 #endif /* _M68K_IRQ_H_ */
81