LXR linux/arch/nios2/include/asm/irqflags.h

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
   4 */
   5#ifndef _ASM_IRQFLAGS_H
   6#define _ASM_IRQFLAGS_H
   7
   8#include <asm/registers.h>
   9
  10static inline unsigned long arch_local_save_flags(void)
  11{
  12        return RDCTL(CTL_STATUS);
  13}
  14
  15/*
  16 * This will restore ALL status register flags, not only the interrupt
  17 * mask flag.
  18 */
  19static inline void arch_local_irq_restore(unsigned long flags)
  20{
  21        WRCTL(CTL_STATUS, flags);
  22}
  23
  24static inline void arch_local_irq_disable(void)
  25{
  26        unsigned long flags;
  27
  28        flags = arch_local_save_flags();
  29        arch_local_irq_restore(flags & ~STATUS_PIE);
  30}
  31
  32static inline void arch_local_irq_enable(void)
  33{
  34        unsigned long flags;
  35
  36        flags = arch_local_save_flags();
  37        arch_local_irq_restore(flags | STATUS_PIE);
  38}
  39
  40static inline int arch_irqs_disabled_flags(unsigned long flags)
  41{
  42        return (flags & STATUS_PIE) == 0;
  43}
  44
  45static inline int arch_irqs_disabled(void)
  46{
  47        return arch_irqs_disabled_flags(arch_local_save_flags());
  48}
  49
  50static inline unsigned long arch_local_irq_save(void)
  51{
  52        unsigned long flags;
  53
  54        flags = arch_local_save_flags();
  55        arch_local_irq_restore(flags & ~STATUS_PIE);
  56        return flags;
  57}
  58
  59#endif /* _ASM_IRQFLAGS_H */
  60