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) || \
16       defined(CONFIG_SUN3X) || defined(CONFIG_VIRT)
17 #define NR_IRQS 200
18 #elif defined(CONFIG_ATARI)
19 #define NR_IRQS 141
20 #elif defined(CONFIG_MAC)
21 #define NR_IRQS 72
22 #elif defined(CONFIG_Q40)
23 #define NR_IRQS	43
24 #elif defined(CONFIG_AMIGA) || !defined(CONFIG_MMU)
25 #define NR_IRQS	32
26 #elif defined(CONFIG_APOLLO)
27 #define NR_IRQS	24
28 #elif defined(CONFIG_HP300)
29 #define NR_IRQS	8
30 #else
31 #define NR_IRQS	0
32 #endif
33 
34 #if defined(CONFIG_M68020) || defined(CONFIG_M68030) || \
35     defined(CONFIG_M68040) || defined(CONFIG_M68060)
36 
37 /*
38  * Interrupt source definitions
39  * General interrupt sources are the level 1-7.
40  * Adding an interrupt service routine for one of these sources
41  * results in the addition of that routine to a chain of routines.
42  * Each one is called in succession.  Each individual interrupt
43  * service routine should determine if the device associated with
44  * that routine requires service.
45  */
46 
47 #define IRQ_SPURIOUS	0
48 
49 #define IRQ_AUTO_1	1	/* level 1 interrupt */
50 #define IRQ_AUTO_2	2	/* level 2 interrupt */
51 #define IRQ_AUTO_3	3	/* level 3 interrupt */
52 #define IRQ_AUTO_4	4	/* level 4 interrupt */
53 #define IRQ_AUTO_5	5	/* level 5 interrupt */
54 #define IRQ_AUTO_6	6	/* level 6 interrupt */
55 #define IRQ_AUTO_7	7	/* level 7 interrupt (non-maskable) */
56 
57 #define IRQ_USER	8
58 
59 struct irq_data;
60 struct irq_chip;
61 struct irq_desc;
62 extern unsigned int m68k_irq_startup(struct irq_data *data);
63 extern unsigned int m68k_irq_startup_irq(unsigned int irq);
64 extern void m68k_irq_shutdown(struct irq_data *data);
65 extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int,
66 						      struct pt_regs *));
67 extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt);
68 extern void m68k_setup_irq_controller(struct irq_chip *,
69 				      void (*handle)(struct irq_desc *desc),
70 				      unsigned int irq, unsigned int cnt);
71 
72 extern unsigned int irq_canonicalize(unsigned int irq);
73 
74 #else
75 #define irq_canonicalize(irq)  (irq)
76 #endif /* !(CONFIG_M68020 || CONFIG_M68030 || CONFIG_M68040 || CONFIG_M68060) */
77 
78 asmlinkage void do_IRQ(int irq, struct pt_regs *regs);
79 extern atomic_t irq_err_count;
80 
81 #endif /* _M68K_IRQ_H_ */
82