60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
/* 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 */
|