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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _M68K_IRQ_H_
2#define _M68K_IRQ_H_
3
Linus Torvalds1da177e2005-04-16 15:20:36 -07004#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
Thomas Gleixnerf6f23882006-07-01 19:29:18 -070065 * mechanism like all other architectures - IRQF_DISABLED and
66 * IRQF_SHARED are your friends.
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 */
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/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070084 * Some drivers want these entry points
85 */
Greg Ungerer09148772006-06-26 11:47:35 +100086#define enable_irq(x) do { } while (0)
Christoph Hellwig32588912006-01-06 00:18:45 -080087#define disable_irq(x) do { } while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070088#define disable_irq_nosync(x) disable_irq(x)
Greg Ungererdd93e852006-12-06 11:36:13 +100089#define irq_canonicalize(irq) (irq)
Linus Torvalds1da177e2005-04-16 15:20:36 -070090
Linus Torvalds1da177e2005-04-16 15:20:36 -070091#endif /* _M68K_IRQ_H_ */