1 #ifndef __ALPHA_IRQFLAGS_H
2 #define __ALPHA_IRQFLAGS_H
3 
4 #include <asm/system.h>
5 
6 #define IPL_MIN		0
7 #define IPL_SW0		1
8 #define IPL_SW1		2
9 #define IPL_DEV0	3
10 #define IPL_DEV1	4
11 #define IPL_TIMER	5
12 #define IPL_PERF	6
13 #define IPL_POWERFAIL	6
14 #define IPL_MCHECK	7
15 #define IPL_MAX		7
16 
17 #ifdef CONFIG_ALPHA_BROKEN_IRQ_MASK
18 #undef IPL_MIN
19 #define IPL_MIN		__min_ipl
20 extern int __min_ipl;
21 #endif
22 
23 #define getipl()		(rdps() & 7)
24 #define setipl(ipl)		((void) swpipl(ipl))
25 
arch_local_save_flags(void)26 static inline unsigned long arch_local_save_flags(void)
27 {
28 	return rdps();
29 }
30 
arch_local_irq_disable(void)31 static inline void arch_local_irq_disable(void)
32 {
33 	setipl(IPL_MAX);
34 	barrier();
35 }
36 
arch_local_irq_save(void)37 static inline unsigned long arch_local_irq_save(void)
38 {
39 	unsigned long flags = swpipl(IPL_MAX);
40 	barrier();
41 	return flags;
42 }
43 
arch_local_irq_enable(void)44 static inline void arch_local_irq_enable(void)
45 {
46 	barrier();
47 	setipl(IPL_MIN);
48 }
49 
arch_local_irq_restore(unsigned long flags)50 static inline void arch_local_irq_restore(unsigned long flags)
51 {
52 	barrier();
53 	setipl(flags);
54 	barrier();
55 }
56 
arch_irqs_disabled_flags(unsigned long flags)57 static inline bool arch_irqs_disabled_flags(unsigned long flags)
58 {
59 	return flags == IPL_MAX;
60 }
61 
arch_irqs_disabled(void)62 static inline bool arch_irqs_disabled(void)
63 {
64 	return arch_irqs_disabled_flags(getipl());
65 }
66 
67 #endif /* __ALPHA_IRQFLAGS_H */
68