summaryrefslogtreecommitdiffstats
path: root/include/asm-generic/irqflags.h
blob: 19ccbf483a2403184b2eaaa9d21c809afd97bc4e (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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_GENERIC_IRQFLAGS_H
#define __ASM_GENERIC_IRQFLAGS_H

/*
 * All architectures should implement at least the first two functions,
 * usually inline assembly will be the best way.
 */
#ifndef ARCH_IRQ_DISABLED
#define ARCH_IRQ_DISABLED 0
#define ARCH_IRQ_ENABLED 1
#endif

/* read interrupt enabled status */
#ifndef arch_local_save_flags
unsigned long arch_local_save_flags(void);
#endif

/* set interrupt enabled status */
#ifndef arch_local_irq_restore
void arch_local_irq_restore(unsigned long flags);
#endif

/* get status and disable interrupts */
#ifndef arch_local_irq_save
static inline unsigned long arch_local_irq_save(void)
{
	unsigned long flags;
	flags = arch_local_save_flags();
	arch_local_irq_restore(ARCH_IRQ_DISABLED);
	return flags;
}
#endif

/* test flags */
#ifndef arch_irqs_disabled_flags
static inline int arch_irqs_disabled_flags(unsigned long flags)
{
	return flags == ARCH_IRQ_DISABLED;
}
#endif

/* unconditionally enable interrupts */
#ifndef arch_local_irq_enable
static inline void arch_local_irq_enable(void)
{
	arch_local_irq_restore(ARCH_IRQ_ENABLED);
}
#endif

/* unconditionally disable interrupts */
#ifndef arch_local_irq_disable
static inline void arch_local_irq_disable(void)
{
	arch_local_irq_restore(ARCH_IRQ_DISABLED);
}
#endif

/* test hardware interrupt enable bit */
#ifndef arch_irqs_disabled
static inline int arch_irqs_disabled(void)
{
	return arch_irqs_disabled_flags(arch_local_save_flags());
}
#endif

#endif /* __ASM_GENERIC_IRQFLAGS_H */
OpenPOWER on IntegriCloud