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10e26723 DM |
1 | /* |
2 | * include/asm-sparc64/irqflags.h | |
3 | * | |
4 | * IRQ flags handling | |
5 | * | |
6 | * This file gets included from lowlevel asm headers too, to provide | |
7 | * wrapped versions of the local_irq_*() APIs, based on the | |
8 | * raw_local_irq_*() functions from the lowlevel headers. | |
9 | */ | |
10 | #ifndef _ASM_IRQFLAGS_H | |
11 | #define _ASM_IRQFLAGS_H | |
12 | ||
13 | #ifndef __ASSEMBLY__ | |
14 | ||
15 | static inline unsigned long __raw_local_save_flags(void) | |
16 | { | |
17 | unsigned long flags; | |
18 | ||
19 | __asm__ __volatile__( | |
20 | "rdpr %%pil, %0" | |
21 | : "=r" (flags) | |
22 | ); | |
23 | ||
24 | return flags; | |
25 | } | |
26 | ||
27 | #define raw_local_save_flags(flags) \ | |
28 | do { (flags) = __raw_local_save_flags(); } while (0) | |
29 | ||
30 | static inline void raw_local_irq_restore(unsigned long flags) | |
31 | { | |
32 | __asm__ __volatile__( | |
33 | "wrpr %0, %%pil" | |
34 | : /* no output */ | |
35 | : "r" (flags) | |
36 | : "memory" | |
37 | ); | |
38 | } | |
39 | ||
40 | static inline void raw_local_irq_disable(void) | |
41 | { | |
42 | __asm__ __volatile__( | |
43 | "wrpr 15, %%pil" | |
44 | : /* no outputs */ | |
45 | : /* no inputs */ | |
46 | : "memory" | |
47 | ); | |
48 | } | |
49 | ||
50 | static inline void raw_local_irq_enable(void) | |
51 | { | |
52 | __asm__ __volatile__( | |
53 | "wrpr 0, %%pil" | |
54 | : /* no outputs */ | |
55 | : /* no inputs */ | |
56 | : "memory" | |
57 | ); | |
58 | } | |
59 | ||
60 | static inline int raw_irqs_disabled_flags(unsigned long flags) | |
61 | { | |
62 | return (flags > 0); | |
63 | } | |
64 | ||
65 | static inline int raw_irqs_disabled(void) | |
66 | { | |
67 | unsigned long flags = __raw_local_save_flags(); | |
68 | ||
69 | return raw_irqs_disabled_flags(flags); | |
70 | } | |
71 | ||
72 | /* | |
73 | * For spinlocks, etc: | |
74 | */ | |
75 | static inline unsigned long __raw_local_irq_save(void) | |
76 | { | |
77 | unsigned long flags = __raw_local_save_flags(); | |
78 | ||
79 | raw_local_irq_disable(); | |
80 | ||
81 | return flags; | |
82 | } | |
83 | ||
84 | #define raw_local_irq_save(flags) \ | |
85 | do { (flags) = __raw_local_irq_save(); } while (0) | |
86 | ||
87 | #endif /* (__ASSEMBLY__) */ | |
88 | ||
89 | #endif /* !(_ASM_IRQFLAGS_H) */ |