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1ccea77e | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
f27ffc75 LFT |
2 | /* |
3 | * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw> | |
f27ffc75 LFT |
4 | */ |
5 | #ifndef _ASM_IRQFLAGS_H | |
6 | #define _ASM_IRQFLAGS_H | |
7 | ||
8 | #include <asm/registers.h> | |
9 | ||
10 | static inline unsigned long arch_local_save_flags(void) | |
11 | { | |
12 | return RDCTL(CTL_STATUS); | |
13 | } | |
14 | ||
15 | /* | |
16 | * This will restore ALL status register flags, not only the interrupt | |
17 | * mask flag. | |
18 | */ | |
19 | static inline void arch_local_irq_restore(unsigned long flags) | |
20 | { | |
21 | WRCTL(CTL_STATUS, flags); | |
22 | } | |
23 | ||
24 | static inline void arch_local_irq_disable(void) | |
25 | { | |
26 | unsigned long flags; | |
27 | ||
28 | flags = arch_local_save_flags(); | |
29 | arch_local_irq_restore(flags & ~STATUS_PIE); | |
30 | } | |
31 | ||
32 | static inline void arch_local_irq_enable(void) | |
33 | { | |
34 | unsigned long flags; | |
35 | ||
36 | flags = arch_local_save_flags(); | |
37 | arch_local_irq_restore(flags | STATUS_PIE); | |
38 | } | |
39 | ||
40 | static inline int arch_irqs_disabled_flags(unsigned long flags) | |
41 | { | |
42 | return (flags & STATUS_PIE) == 0; | |
43 | } | |
44 | ||
45 | static inline int arch_irqs_disabled(void) | |
46 | { | |
47 | return arch_irqs_disabled_flags(arch_local_save_flags()); | |
48 | } | |
49 | ||
50 | static inline unsigned long arch_local_irq_save(void) | |
51 | { | |
52 | unsigned long flags; | |
53 | ||
54 | flags = arch_local_save_flags(); | |
55 | arch_local_irq_restore(flags & ~STATUS_PIE); | |
56 | return flags; | |
57 | } | |
58 | ||
59 | #endif /* _ASM_IRQFLAGS_H */ |