2 * Copyright (C) 2016 Cadence Design Systems Inc.
4 * SPDX-License-Identifier: GPL-2.0+
7 #ifndef _XTENSA_ATOMIC_H
8 #define _XTENSA_ATOMIC_H
10 #include <asm/system.h>
12 typedef struct { volatile int counter; } atomic_t;
14 #define ATOMIC_INIT(i) { (i) }
16 #define atomic_read(v) ((v)->counter)
17 #define atomic_set(v, i) ((v)->counter = (i))
19 static inline void atomic_add(int i, atomic_t *v)
23 local_irq_save(flags);
25 local_irq_restore(flags);
28 static inline void atomic_sub(int i, atomic_t *v)
32 local_irq_save(flags);
34 local_irq_restore(flags);
37 static inline void atomic_inc(atomic_t *v)
41 local_irq_save(flags);
43 local_irq_restore(flags);
46 static inline void atomic_dec(atomic_t *v)
50 local_irq_save(flags);
52 local_irq_restore(flags);