1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 *  arch/arm/include/asm/mach/irq.h
 4 *
 5 *  Copyright (C) 1995-2000 Russell King.
 
 
 
 
 6 */
 7#ifndef __ASM_ARM_MACH_IRQ_H
 8#define __ASM_ARM_MACH_IRQ_H
 9
10#include <linux/irq.h>
11
12struct seq_file;
13
14/*
15 * This is internal.  Do not use it.
16 */
17extern void init_FIQ(int);
18extern int show_fiq_list(struct seq_file *, int);
19
 
 
 
 
20/*
21 * This is for easy migration, but should be changed in the source
22 */
23#define do_bad_IRQ(desc)				\
24do {							\
25	raw_spin_lock(&desc->lock);			\
26	handle_bad_irq(desc);				\
27	raw_spin_unlock(&desc->lock);			\
28} while(0)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
29
30#endif

 
 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