irqflags.h

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/*
 * Xtensa IRQ flags handling functions
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2001 - 2005 Tensilica Inc.
 */

#ifndef _XTENSA_IRQFLAGS_H
#define _XTENSA_IRQFLAGS_H

#include <linux/types.h>

static inline unsigned long arch_local_save_flags(void)
{
    unsigned long flags;
    asm volatile("rsr %0, ps" : "=a" (flags));
    return flags;
}

static inline unsigned long arch_local_irq_save(void)
{
    unsigned long flags;
    asm volatile("rsil %0, "__stringify(LOCKLEVEL)
             : "=a" (flags) :: "memory");
    return flags;
}

static inline void arch_local_irq_disable(void)
{
    arch_local_irq_save();
}

static inline void arch_local_irq_enable(void)
{
    unsigned long flags;
    asm volatile("rsil %0, 0" : "=a" (flags) :: "memory");
}

static inline void arch_local_irq_restore(unsigned long flags)
{
    asm volatile("wsr %0, ps; rsync"
             :: "a" (flags) : "memory");
}

static inline bool arch_irqs_disabled_flags(unsigned long flags)
{
    return (flags & 0xf) != 0;
}

static inline bool arch_irqs_disabled(void)
{
    return arch_irqs_disabled_flags(arch_local_save_flags());
}

#endif /* _XTENSA_IRQFLAGS_H */