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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PARISC_IRQFLAGS_H
#define __PARISC_IRQFLAGS_H
#include <linux/types.h>
#include <asm/psw.h>
static inline unsigned long arch_local_save_flags(void)
{
unsigned long flags;
asm volatile("ssm 0, %0" : "=r" (flags) : : "memory");
return flags;
}
static inline void arch_local_irq_disable(void)
{
asm volatile("rsm %0,%%r0\n" : : "i" (PSW_I) : "memory");
}
static inline void arch_local_irq_enable(void)
{
asm volatile("ssm %0,%%r0\n" : : "i" (PSW_I) : "memory");
}
static inline unsigned long arch_local_irq_save(void)
{
unsigned long flags;
asm volatile("rsm %1,%0" : "=r" (flags) : "i" (PSW_I) : "memory");
return flags;
}
static inline void arch_local_irq_restore(unsigned long flags)
{
/* warn if IRQs are on although they should be off */
if (IS_ENABLED(CONFIG_LIGHTWEIGHT_SPINLOCK_CHECK))
if (arch_local_save_flags() & PSW_I)
asm volatile("break 6,6\n"); /* SPINLOCK_BREAK_INSN */
asm volatile("mtsm %0" : : "r" (flags) : "memory");
}
static inline bool arch_irqs_disabled_flags(unsigned long flags)
{
return (flags & PSW_I) == 0;
}
static inline bool arch_irqs_disabled(void)
{
return arch_irqs_disabled_flags(arch_local_save_flags());
}
#endif /* __PARISC_IRQFLAGS_H */