summaryrefslogtreecommitdiffstats
path: root/include/asm-mips/irq.h
blob: 3f2470e9e67808d63f2bdbb71418ebcb36d2c212 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1994 by Waldorf GMBH, written by Ralf Baechle
 * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02, 03 by Ralf Baechle
 */
#ifndef _ASM_IRQ_H
#define _ASM_IRQ_H

#include <linux/config.h>
#include <linux/linkage.h>
#include <irq.h>

#ifdef CONFIG_I8259
static inline int irq_canonicalize(int irq)
{
	return ((irq == 2) ? 9 : irq);
}
#else
#define irq_canonicalize(irq) (irq)	/* Sane hardware, sane code ... */
#endif

struct pt_regs;

#ifdef CONFIG_PREEMPT

extern asmlinkage unsigned int do_IRQ(unsigned int irq, struct pt_regs *regs);

#else

/*
 * do_IRQ handles all normal device IRQ's (the special
 * SMP cross-CPU interrupts have their own specific
 * handlers).
 *
 * Ideally there should be away to get this into kernel/irq/handle.c to
 * avoid the overhead of a call for just a tiny function ...
 */
#define do_IRQ(irq, regs)						\
do {									\
	irq_enter();							\
	__do_IRQ((irq), (regs));					\
	irq_exit();							\
} while (0)

#endif

extern void arch_init_irq(void);

#endif /* _ASM_IRQ_H */
OpenPOWER on IntegriCloud