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