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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * include/asm-v850/irq.h -- Machine interrupt handling
3 *
4 * Copyright (C) 2001,02,04 NEC Electronics Corporation
5 * Copyright (C) 2001,02,04 Miles Bader <miles@gnu.org>
6 *
7 * This file is subject to the terms and conditions of the GNU General
8 * Public License. See the file COPYING in the main directory of this
9 * archive for more details.
10 *
11 * Written by Miles Bader <miles@gnu.org>
12 */
13
14#ifndef __V850_IRQ_H__
15#define __V850_IRQ_H__
16
17#include <asm/machdep.h>
18
19/* Default NUM_MACH_IRQS. */
20#ifndef NUM_MACH_IRQS
21#define NUM_MACH_IRQS NUM_CPU_IRQS
22#endif
23
24/* NMIs have IRQ numbers from FIRST_NMI to FIRST_NMI+NUM_NMIS-1. */
25#define FIRST_NMI NUM_MACH_IRQS
26#define IRQ_NMI(n) (FIRST_NMI + (n))
27/* v850 processors have 3 non-maskable interrupts. */
28#define NUM_NMIS 3
29
30/* Includes both maskable and non-maskable irqs. */
31#define NR_IRQS (NUM_MACH_IRQS + NUM_NMIS)
32
33
34#ifndef __ASSEMBLY__
35
36struct pt_regs;
37struct hw_interrupt_type;
38struct irqaction;
39
40#define irq_canonicalize(irq) (irq)
41
42/* Initialize irq handling for IRQs.
43 BASE_IRQ, BASE_IRQ+INTERVAL, ..., BASE_IRQ+NUM*INTERVAL
44 to IRQ_TYPE. An IRQ_TYPE of 0 means to use a generic interrupt type. */
45extern void
46init_irq_handlers (int base_irq, int num, int interval,
47 struct hw_interrupt_type *irq_type);
48
49typedef void (*irq_handler_t)(int irq, void *data, struct pt_regs *regs);
50
51/* Handle interrupt IRQ. REGS are the registers at the time of ther
52 interrupt. */
53extern unsigned int handle_irq (int irq, struct pt_regs *regs);
54
55
56/* Enable interrupt handling on an irq. */
57extern void enable_irq(unsigned int irq);
58
59/* Disable an irq and wait for completion. */
60extern void disable_irq (unsigned int irq);
61
62/* Disable an irq without waiting. */
63extern void disable_irq_nosync (unsigned int irq);
64
65extern int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *);
66
67#endif /* !__ASSEMBLY__ */
68
69#endif /* __V850_IRQ_H__ */