60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
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*/
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#ifndef _ASM_IRQFLAGS_H
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#define _ASM_IRQFLAGS_H
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#include <asm/registers.h>
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static inline unsigned long arch_local_save_flags(void)
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{
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return RDCTL(CTL_STATUS);
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}
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/*
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* This will restore ALL status register flags, not only the interrupt
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* mask flag.
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*/
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static inline void arch_local_irq_restore(unsigned long flags)
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{
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WRCTL(CTL_STATUS, flags);
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}
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static inline void arch_local_irq_disable(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(flags & ~STATUS_PIE);
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}
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static inline void arch_local_irq_enable(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(flags | STATUS_PIE);
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}
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static inline int arch_irqs_disabled_flags(unsigned long flags)
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{
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return (flags & STATUS_PIE) == 0;
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}
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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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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(flags & ~STATUS_PIE);
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return flags;
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}
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#endif /* _ASM_IRQFLAGS_H */
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