xref: /linux/include/asm-generic/irqflags.h (revision d39d0ed196aa1685bb24771e92f78633c66ac9cb)
1 #ifndef __ASM_GENERIC_IRQFLAGS_H
2 #define __ASM_GENERIC_IRQFLAGS_H
3 
4 /*
5  * All architectures should implement at least the first two functions,
6  * usually inline assembly will be the best way.
7  */
8 #ifndef RAW_IRQ_DISABLED
9 #define RAW_IRQ_DISABLED 0
10 #define RAW_IRQ_ENABLED 1
11 #endif
12 
13 /* read interrupt enabled status */
14 #ifndef __raw_local_save_flags
15 unsigned long __raw_local_save_flags(void);
16 #endif
17 
18 /* set interrupt enabled status */
19 #ifndef raw_local_irq_restore
20 void raw_local_irq_restore(unsigned long flags);
21 #endif
22 
23 /* get status and disable interrupts */
24 #ifndef __raw_local_irq_save
25 static inline unsigned long __raw_local_irq_save(void)
26 {
27 	unsigned long flags;
28 	flags = __raw_local_save_flags();
29 	raw_local_irq_restore(RAW_IRQ_DISABLED);
30 	return flags;
31 }
32 #endif
33 
34 /* test flags */
35 #ifndef raw_irqs_disabled_flags
36 static inline int raw_irqs_disabled_flags(unsigned long flags)
37 {
38 	return flags == RAW_IRQ_DISABLED;
39 }
40 #endif
41 
42 /* unconditionally enable interrupts */
43 #ifndef raw_local_irq_enable
44 static inline void raw_local_irq_enable(void)
45 {
46 	raw_local_irq_restore(RAW_IRQ_ENABLED);
47 }
48 #endif
49 
50 /* unconditionally disable interrupts */
51 #ifndef raw_local_irq_disable
52 static inline void raw_local_irq_disable(void)
53 {
54 	raw_local_irq_restore(RAW_IRQ_DISABLED);
55 }
56 #endif
57 
58 /* test hardware interrupt enable bit */
59 #ifndef raw_irqs_disabled
60 static inline int raw_irqs_disabled(void)
61 {
62 	return raw_irqs_disabled_flags(__raw_local_save_flags());
63 }
64 #endif
65 
66 #define raw_local_save_flags(flags) \
67 	do { (flags) = __raw_local_save_flags(); } while (0)
68 
69 #define raw_local_irq_save(flags) \
70 	do { (flags) = __raw_local_irq_save(); } while (0)
71 
72 #endif /* __ASM_GENERIC_IRQFLAGS_H */
73