1#ifndef _M68K_IRQ_H_
2#define _M68K_IRQ_H_
3
4#include <asm/ptrace.h>
5
6#ifdef CONFIG_COLDFIRE
7/*
8 * On the ColdFire we keep track of all vectors. That way drivers
9 * can register whatever vector number they wish, and we can deal
10 * with it.
11 */
12#define	SYS_IRQS	256
13#define	NR_IRQS		SYS_IRQS
14
15#else
16
17/*
18 * # of m68k interrupts
19 */
20#define SYS_IRQS 8
21#define NR_IRQS (24+SYS_IRQS)
22
23#endif /* CONFIG_COLDFIRE */
24
25/*
26 * Interrupt source definitions
27 * General interrupt sources are the level 1-7.
28 * Adding an interrupt service routine for one of these sources
29 * results in the addition of that routine to a chain of routines.
30 * Each one is called in succession.  Each individual interrupt
31 * service routine should determine if the device associated with
32 * that routine requires service.
33 */
34
35#define IRQ1		(1)	/* level 1 interrupt */
36#define IRQ2		(2)	/* level 2 interrupt */
37#define IRQ3		(3)	/* level 3 interrupt */
38#define IRQ4		(4)	/* level 4 interrupt */
39#define IRQ5		(5)	/* level 5 interrupt */
40#define IRQ6		(6)	/* level 6 interrupt */
41#define IRQ7		(7)	/* level 7 interrupt (non-maskable) */
42
43/*
44 * Machine specific interrupt sources.
45 *
46 * Adding an interrupt service routine for a source with this bit
47 * set indicates a special machine specific interrupt source.
48 * The machine specific files define these sources.
49 *
50 * The IRQ_MACHSPEC bit is now gone - the only thing it did was to
51 * introduce unnecessary overhead.
52 *
53 * All interrupt handling is actually machine specific so it is better
54 * to use function pointers, as used by the Sparc port, and select the
55 * interrupt handling functions when initializing the kernel. This way
56 * we save some unnecessary overhead at run-time.
57 *                                                      01/11/97 - Jes
58 */
59
60extern void (*mach_enable_irq)(unsigned int);
61extern void (*mach_disable_irq)(unsigned int);
62
63/*
64 * various flags for request_irq() - the Amiga now uses the standard
65 * mechanism like all other architectures - IRQF_DISABLED and
66 * IRQF_SHARED are your friends.
67 */
68#define IRQ_FLG_LOCK	(0x0001)	/* handler is not replaceable	*/
69#define IRQ_FLG_REPLACE	(0x0002)	/* replace existing handler	*/
70#define IRQ_FLG_FAST	(0x0004)
71#define IRQ_FLG_SLOW	(0x0008)
72#define IRQ_FLG_STD	(0x8000)	/* internally used		*/
73
74#ifdef CONFIG_M68360
75
76#define CPM_INTERRUPT    IRQ4
77
78/* see MC68360 User's Manual, p. 7-377  */
79#define CPM_VECTOR_BASE  0x04           /* 3 MSbits of CPM vector */
80
81#endif /* CONFIG_M68360 */
82
83/*
84 * Some drivers want these entry points
85 */
86#define enable_irq(x)	do { } while (0)
87#define disable_irq(x)	do { } while (0)
88#define disable_irq_nosync(x)	disable_irq(x)
89#define irq_canonicalize(irq)	(irq)
90
91#endif /* _M68K_IRQ_H_ */
92