1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ALPHA_IRQFLAGS_H
3 #define __ALPHA_IRQFLAGS_H
4
5 #include <asm/pal.h>
6
7 #define IPL_MIN 0
8 #define IPL_SW0 1
9 #define IPL_SW1 2
10 #define IPL_DEV0 3
11 #define IPL_DEV1 4
12 #define IPL_TIMER 5
13 #define IPL_PERF 6
14 #define IPL_POWERFAIL 6
15 #define IPL_MCHECK 7
16 #define IPL_MAX 7
17
18 #ifdef CONFIG_ALPHA_BROKEN_IRQ_MASK
19 #undef IPL_MIN
20 #define IPL_MIN __min_ipl
21 extern int __min_ipl;
22 #endif
23
24 #define getipl() (rdps() & 7)
25 #define setipl(ipl) ((void) swpipl(ipl))
26
27 static inline unsigned long arch_local_save_flags(void)
28 {
29 return rdps();
30 }
31
32 static inline void arch_local_irq_disable(void)
33 {
34 setipl(IPL_MAX);
35 barrier();
36 }
37
38 static inline unsigned long arch_local_irq_save(void)
39 {
40 unsigned long flags = swpipl(IPL_MAX);
41 barrier();
42 return flags;
43 }
44
45 static inline void arch_local_irq_enable(void)
46 {
47 barrier();
48 setipl(IPL_MIN);
49 }
50
51 static inline void arch_local_irq_restore(unsigned long flags)
52 {
53 barrier();
54 setipl(flags);
55 barrier();
56 }
57
58 static inline bool arch_irqs_disabled_flags(unsigned long flags)
59 {
60 return flags == IPL_MAX;
61 }
62
63 static inline bool arch_irqs_disabled(void)
64 {
65 return arch_irqs_disabled_flags(getipl());
66 }
67
68 #endif /* __ALPHA_IRQFLAGS_H */
69
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