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/*
* Copyright (c) 2018 Western Digital Corporation or its affiliates.
*
* Authors:
* Anup Patel <anup.patel@wdc.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#ifndef __RISCV_ATOMIC_H__
#define __RISCV_ATOMIC_H__
typedef struct {
volatile long counter;
} atomic_t;
#define ATOMIC_INIT(_lptr, val) \
(_lptr)->counter = (val)
#define ATOMIC_INITIALIZER(val) \
{ .counter = (val), }
long atomic_read(atomic_t *atom);
void atomic_write(atomic_t *atom, long value);
long atomic_add_return(atomic_t *atom, long value);
long atomic_sub_return(atomic_t *atom, long value);
long arch_atomic_cmpxchg(atomic_t *atom, long oldval, long newval);
long arch_atomic_xchg(atomic_t *atom, long newval);
unsigned int atomic_raw_xchg_uint(volatile unsigned int *ptr,
unsigned int newval);
#endif
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