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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef SMP_ATOMIC_H
#define SMP_ATOMIC_H
#if CONFIG(SMP)
#include <arch/smp/atomic.h>
#else
typedef struct { int counter; } atomic_t;
#define ATOMIC_INIT(i) { (i) }
/**
* @file include/smp/atomic.h
*/
/**
* atomic_read - read atomic variable
* @param v: pointer of type atomic_t
*
* Atomically reads the value of v. Note that the guaranteed
* useful range of an atomic_t is only 24 bits.
*/
#define atomic_read(v) ((v)->counter)
/**
* atomic_set - set atomic variable
* @param v: pointer of type atomic_t
* @param i: required value
*
* Atomically sets the value of v to i. Note that the guaranteed
* useful range of an atomic_t is only 24 bits.
*/
#define atomic_set(v, i) (((v)->counter) = (i))
/**
* atomic_inc - increment atomic variable
* @param v: pointer of type atomic_t
*
* Atomically increments v by 1. Note that the guaranteed
* useful range of an atomic_t is only 24 bits.
*/
#define atomic_inc(v) (((v)->counter)++)
/**
* atomic_dec - decrement atomic variable
* @param v: pointer of type atomic_t
*
* Atomically decrements v by 1. Note that the guaranteed
* useful range of an atomic_t is only 24 bits.
*/
#define atomic_dec(v) (((v)->counter)--)
#endif /* CONFIG_SMP */
#endif /* SMP_ATOMIC_H */
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