| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef __ASM_GENERIC_IRQFLAGS_H |
| 3 | #define __ASM_GENERIC_IRQFLAGS_H |
| 4 | |
| 5 | /* |
| 6 | * All architectures should implement at least the first two functions, |
| 7 | * usually inline assembly will be the best way. |
| 8 | */ |
| 9 | #ifndef ARCH_IRQ_DISABLED |
| 10 | #define ARCH_IRQ_DISABLED 0 |
| 11 | #define ARCH_IRQ_ENABLED 1 |
| 12 | #endif |
| 13 | |
| 14 | /* read interrupt enabled status */ |
| 15 | #ifndef arch_local_save_flags |
| 16 | unsigned long arch_local_save_flags(void); |
| 17 | #endif |
| 18 | |
| 19 | /* set interrupt enabled status */ |
| 20 | #ifndef arch_local_irq_restore |
| 21 | void arch_local_irq_restore(unsigned long flags); |
| 22 | #endif |
| 23 | |
| 24 | /* get status and disable interrupts */ |
| 25 | #ifndef arch_local_irq_save |
| 26 | static inline unsigned long arch_local_irq_save(void) |
| 27 | { |
| 28 | unsigned long flags; |
| 29 | flags = arch_local_save_flags(); |
| 30 | arch_local_irq_restore(ARCH_IRQ_DISABLED); |
| 31 | return flags; |
| 32 | } |
| 33 | #endif |
| 34 | |
| 35 | /* test flags */ |
| 36 | #ifndef arch_irqs_disabled_flags |
| 37 | static inline int arch_irqs_disabled_flags(unsigned long flags) |
| 38 | { |
| 39 | return flags == ARCH_IRQ_DISABLED; |
| 40 | } |
| 41 | #endif |
| 42 | |
| 43 | /* unconditionally enable interrupts */ |
| 44 | #ifndef arch_local_irq_enable |
| 45 | static inline void arch_local_irq_enable(void) |
| 46 | { |
| 47 | arch_local_irq_restore(ARCH_IRQ_ENABLED); |
| 48 | } |
| 49 | #endif |
| 50 | |
| 51 | /* unconditionally disable interrupts */ |
| 52 | #ifndef arch_local_irq_disable |
| 53 | static inline void arch_local_irq_disable(void) |
| 54 | { |
| 55 | arch_local_irq_restore(ARCH_IRQ_DISABLED); |
| 56 | } |
| 57 | #endif |
| 58 | |
| 59 | /* test hardware interrupt enable bit */ |
| 60 | #ifndef arch_irqs_disabled |
| 61 | static inline int arch_irqs_disabled(void) |
| 62 | { |
| 63 | return arch_irqs_disabled_flags(arch_local_save_flags()); |
| 64 | } |
| 65 | #endif |
| 66 | |
| 67 | #endif /* __ASM_GENERIC_IRQFLAGS_H */ |