]>
Commit | Line | Data |
---|---|---|
1 | /* SPDX-License-Identifier: GPL-2.0 */ | |
2 | #ifndef __ASM_GENERIC_IRQFLAGS_H | |
3 | #define __ASM_GENERIC_IRQFLAGS_H | |
4 | ||
5 | /* | |
6 | * All architectures should implement at least the first two functions, | |
7 | * usually inline assembly will be the best way. | |
8 | */ | |
9 | #ifndef ARCH_IRQ_DISABLED | |
10 | #define ARCH_IRQ_DISABLED 0 | |
11 | #define ARCH_IRQ_ENABLED 1 | |
12 | #endif | |
13 | ||
14 | /* read interrupt enabled status */ | |
15 | #ifndef arch_local_save_flags | |
16 | unsigned long arch_local_save_flags(void); | |
17 | #endif | |
18 | ||
19 | /* set interrupt enabled status */ | |
20 | #ifndef arch_local_irq_restore | |
21 | void arch_local_irq_restore(unsigned long flags); | |
22 | #endif | |
23 | ||
24 | /* get status and disable interrupts */ | |
25 | #ifndef arch_local_irq_save | |
26 | static inline unsigned long arch_local_irq_save(void) | |
27 | { | |
28 | unsigned long flags; | |
29 | flags = arch_local_save_flags(); | |
30 | arch_local_irq_restore(ARCH_IRQ_DISABLED); | |
31 | return flags; | |
32 | } | |
33 | #endif | |
34 | ||
35 | /* test flags */ | |
36 | #ifndef arch_irqs_disabled_flags | |
37 | static inline int arch_irqs_disabled_flags(unsigned long flags) | |
38 | { | |
39 | return flags == ARCH_IRQ_DISABLED; | |
40 | } | |
41 | #endif | |
42 | ||
43 | /* unconditionally enable interrupts */ | |
44 | #ifndef arch_local_irq_enable | |
45 | static inline void arch_local_irq_enable(void) | |
46 | { | |
47 | arch_local_irq_restore(ARCH_IRQ_ENABLED); | |
48 | } | |
49 | #endif | |
50 | ||
51 | /* unconditionally disable interrupts */ | |
52 | #ifndef arch_local_irq_disable | |
53 | static inline void arch_local_irq_disable(void) | |
54 | { | |
55 | arch_local_irq_restore(ARCH_IRQ_DISABLED); | |
56 | } | |
57 | #endif | |
58 | ||
59 | /* test hardware interrupt enable bit */ | |
60 | #ifndef arch_irqs_disabled | |
61 | static inline int arch_irqs_disabled(void) | |
62 | { | |
63 | return arch_irqs_disabled_flags(arch_local_save_flags()); | |
64 | } | |
65 | #endif | |
66 | ||
67 | #endif /* __ASM_GENERIC_IRQFLAGS_H */ |