irq.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _M68K_IRQ_H_
 3#define _M68K_IRQ_H_
 4
 5#include <linux/atomic.h>
 6#include <linux/linkage.h>
 7
 8/*
 9 * This should be the same as the max(NUM_X_SOURCES) for all the
10 * different m68k hosts compiled into the kernel.
11 * Currently the Atari has 72 and the Amiga 24, but if both are
12 * supported in the kernel it is better to make room for 72.
13 * With EtherNAT add-on card on Atari, the highest interrupt
14 * number is 140 so NR_IRQS needs to be 141.
15 */
16#if defined(CONFIG_COLDFIRE)
17#define NR_IRQS 256
18#elif defined(CONFIG_VME) || defined(CONFIG_SUN3) || \
19      defined(CONFIG_SUN3X) || defined(CONFIG_VIRT)
20#define NR_IRQS 200
21#elif defined(CONFIG_ATARI)
22#define NR_IRQS 141
23#elif defined(CONFIG_MAC)
24#define NR_IRQS 72
25#elif defined(CONFIG_Q40)
26#define NR_IRQS	43
27#elif defined(CONFIG_AMIGA) || !defined(CONFIG_MMU)
28#define NR_IRQS	32
29#elif defined(CONFIG_APOLLO)
30#define NR_IRQS	24
31#else /* CONFIG_HP300 etc. */
32#define NR_IRQS	8
33#endif
34
35#if defined(CONFIG_M68020) || defined(CONFIG_M68030) || \
36    defined(CONFIG_M68040) || defined(CONFIG_M68060)
37
38/*
39 * Interrupt source definitions
40 * General interrupt sources are the level 1-7.
41 * Adding an interrupt service routine for one of these sources
42 * results in the addition of that routine to a chain of routines.
43 * Each one is called in succession.  Each individual interrupt
44 * service routine should determine if the device associated with
45 * that routine requires service.
46 */
47
48#define IRQ_SPURIOUS	0
49
50#define IRQ_AUTO_1	1	/* level 1 interrupt */
51#define IRQ_AUTO_2	2	/* level 2 interrupt */
52#define IRQ_AUTO_3	3	/* level 3 interrupt */
53#define IRQ_AUTO_4	4	/* level 4 interrupt */
54#define IRQ_AUTO_5	5	/* level 5 interrupt */
55#define IRQ_AUTO_6	6	/* level 6 interrupt */
56#define IRQ_AUTO_7	7	/* level 7 interrupt (non-maskable) */
57
58#define IRQ_USER	8
59
60struct irq_data;
61struct irq_chip;
62struct irq_desc;
63struct pt_regs;
64
65extern unsigned int m68k_irq_startup(struct irq_data *data);
66extern unsigned int m68k_irq_startup_irq(unsigned int irq);
67extern void m68k_irq_shutdown(struct irq_data *data);
68extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int,
69						      struct pt_regs *));
70extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt);
71extern void m68k_setup_irq_controller(struct irq_chip *,
72				      void (*handle)(struct irq_desc *desc),
73				      unsigned int irq, unsigned int cnt);
74
75extern unsigned int irq_canonicalize(unsigned int irq);
76
77#else
78#define irq_canonicalize(irq)  (irq)
79#endif /* !(CONFIG_M68020 || CONFIG_M68030 || CONFIG_M68040 || CONFIG_M68060) */
80
81asmlinkage void do_IRQ(int irq, struct pt_regs *regs);
82extern atomic_t irq_err_count;
83
84#endif /* _M68K_IRQ_H_ */