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Linux kernel mirror (for testing)
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kernel
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linux
1/*
2 * arch/arm/include/asm/mach/irq.h
3 *
4 * Copyright (C) 1995-2000 Russell King.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#ifndef __ASM_ARM_MACH_IRQ_H
11#define __ASM_ARM_MACH_IRQ_H
12
13#include <linux/irq.h>
14
15struct seq_file;
16
17/*
18 * This is internal. Do not use it.
19 */
20extern void init_FIQ(void);
21extern int show_fiq_list(struct seq_file *, int);
22
23#ifdef CONFIG_MULTI_IRQ_HANDLER
24extern void (*handle_arch_irq)(struct pt_regs *);
25#endif
26
27/*
28 * This is for easy migration, but should be changed in the source
29 */
30#define do_bad_IRQ(irq,desc) \
31do { \
32 raw_spin_lock(&desc->lock); \
33 handle_bad_irq(irq, desc); \
34 raw_spin_unlock(&desc->lock); \
35} while(0)
36
37#ifndef __ASSEMBLY__
38/*
39 * Entry/exit functions for chained handlers where the primary IRQ chip
40 * may implement either fasteoi or level-trigger flow control.
41 */
42static inline void chained_irq_enter(struct irq_chip *chip,
43 struct irq_desc *desc)
44{
45 /* FastEOI controllers require no action on entry. */
46 if (chip->irq_eoi)
47 return;
48
49 if (chip->irq_mask_ack) {
50 chip->irq_mask_ack(&desc->irq_data);
51 } else {
52 chip->irq_mask(&desc->irq_data);
53 if (chip->irq_ack)
54 chip->irq_ack(&desc->irq_data);
55 }
56}
57
58static inline void chained_irq_exit(struct irq_chip *chip,
59 struct irq_desc *desc)
60{
61 if (chip->irq_eoi)
62 chip->irq_eoi(&desc->irq_data);
63 else
64 chip->irq_unmask(&desc->irq_data);
65}
66#endif
67
68#endif