68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_GENERIC_IRQFLAGS_H
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#define __ASM_GENERIC_IRQFLAGS_H
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/*
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* All architectures should implement at least the first two functions,
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* usually inline assembly will be the best way.
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*/
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#ifndef ARCH_IRQ_DISABLED
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#define ARCH_IRQ_DISABLED 0
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#define ARCH_IRQ_ENABLED 1
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#endif
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/* read interrupt enabled status */
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#ifndef arch_local_save_flags
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unsigned long arch_local_save_flags(void);
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#endif
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/* set interrupt enabled status */
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#ifndef arch_local_irq_restore
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void arch_local_irq_restore(unsigned long flags);
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#endif
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/* get status and disable interrupts */
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#ifndef arch_local_irq_save
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static inline unsigned long arch_local_irq_save(void)
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{
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unsigned long flags;
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flags = arch_local_save_flags();
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arch_local_irq_restore(ARCH_IRQ_DISABLED);
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return flags;
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}
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#endif
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/* test flags */
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#ifndef arch_irqs_disabled_flags
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static inline int arch_irqs_disabled_flags(unsigned long flags)
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{
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return flags == ARCH_IRQ_DISABLED;
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}
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#endif
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/* unconditionally enable interrupts */
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#ifndef arch_local_irq_enable
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static inline void arch_local_irq_enable(void)
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{
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arch_local_irq_restore(ARCH_IRQ_ENABLED);
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}
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#endif
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/* unconditionally disable interrupts */
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#ifndef arch_local_irq_disable
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static inline void arch_local_irq_disable(void)
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{
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arch_local_irq_restore(ARCH_IRQ_DISABLED);
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}
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#endif
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/* test hardware interrupt enable bit */
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#ifndef arch_irqs_disabled
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static inline int arch_irqs_disabled(void)
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{
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return arch_irqs_disabled_flags(arch_local_save_flags());
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}
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#endif
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#endif /* __ASM_GENERIC_IRQFLAGS_H */
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