/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Based on arch/arm/include/asm/atomic.h
 *
 * Copyright (C) 1996 Russell King.
 * Copyright (C) 2002 Deep Blue Solutions Ltd.
 * Copyright (C) 2012 ARM Ltd.
 */
#ifndef __ASM_ATOMIC_H
#define __ASM_ATOMIC_H

#include <linux/compiler.h>
#include <linux/types.h>

#include <asm/barrier.h>
#include <asm/cmpxchg.h>
#include <asm/lse.h>

#define ATOMIC_OP(op)                                                   \
static __always_inline void arch_##op(int i, atomic_t *v)               \
{                                                                       \
        __lse_ll_sc_body(op, i, v);                                     \
}

ATOMIC_OP(atomic_andnot)
ATOMIC_OP(atomic_or)
ATOMIC_OP(atomic_xor)
ATOMIC_OP(atomic_add)
ATOMIC_OP(atomic_and)
ATOMIC_OP(atomic_sub)

#undef ATOMIC_OP

#define ATOMIC_FETCH_OP(name, op)                                       \
static __always_inline int arch_##op##name(int i, atomic_t *v)          \
{                                                                       \
        return __lse_ll_sc_body(op##name, i, v);                        \
}

#define ATOMIC_FETCH_OPS(op)                                            \
        ATOMIC_FETCH_OP(_relaxed, op)                                   \
        ATOMIC_FETCH_OP(_acquire, op)                                   \
        ATOMIC_FETCH_OP(_release, op)                                   \
        ATOMIC_FETCH_OP(        , op)

ATOMIC_FETCH_OPS(atomic_fetch_andnot)
ATOMIC_FETCH_OPS(atomic_fetch_or)
ATOMIC_FETCH_OPS(atomic_fetch_xor)
ATOMIC_FETCH_OPS(atomic_fetch_add)
ATOMIC_FETCH_OPS(atomic_fetch_and)
ATOMIC_FETCH_OPS(atomic_fetch_sub)
ATOMIC_FETCH_OPS(atomic_add_return)
ATOMIC_FETCH_OPS(atomic_sub_return)

#undef ATOMIC_FETCH_OP
#undef ATOMIC_FETCH_OPS

#define ATOMIC64_OP(op)                                                 \
static __always_inline void arch_##op(long i, atomic64_t *v)            \
{                                                                       \
        __lse_ll_sc_body(op, i, v);                                     \
}

ATOMIC64_OP(atomic64_andnot)
ATOMIC64_OP(atomic64_or)
ATOMIC64_OP(atomic64_xor)
ATOMIC64_OP(atomic64_add)
ATOMIC64_OP(atomic64_and)
ATOMIC64_OP(atomic64_sub)

#undef ATOMIC64_OP

#define ATOMIC64_FETCH_OP(name, op)                                     \
static __always_inline long arch_##op##name(long i, atomic64_t *v)      \
{                                                                       \
        return __lse_ll_sc_body(op##name, i, v);                        \
}

#define ATOMIC64_FETCH_OPS(op)                                          \
        ATOMIC64_FETCH_OP(_relaxed, op)                                 \
        ATOMIC64_FETCH_OP(_acquire, op)                                 \
        ATOMIC64_FETCH_OP(_release, op)                                 \
        ATOMIC64_FETCH_OP(        , op)

ATOMIC64_FETCH_OPS(atomic64_fetch_andnot)
ATOMIC64_FETCH_OPS(atomic64_fetch_or)
ATOMIC64_FETCH_OPS(atomic64_fetch_xor)
ATOMIC64_FETCH_OPS(atomic64_fetch_add)
ATOMIC64_FETCH_OPS(atomic64_fetch_and)
ATOMIC64_FETCH_OPS(atomic64_fetch_sub)
ATOMIC64_FETCH_OPS(atomic64_add_return)
ATOMIC64_FETCH_OPS(atomic64_sub_return)

#undef ATOMIC64_FETCH_OP
#undef ATOMIC64_FETCH_OPS

static __always_inline long arch_atomic64_dec_if_positive(atomic64_t *v)
{
        return __lse_ll_sc_body(atomic64_dec_if_positive, v);
}

#define arch_atomic_read(v)                     __READ_ONCE((v)->counter)
#define arch_atomic_set(v, i)                   __WRITE_ONCE(((v)->counter), (i))

#define arch_atomic_add_return_relaxed          arch_atomic_add_return_relaxed
#define arch_atomic_add_return_acquire          arch_atomic_add_return_acquire
#define arch_atomic_add_return_release          arch_atomic_add_return_release
#define arch_atomic_add_return                  arch_atomic_add_return

#define arch_atomic_sub_return_relaxed          arch_atomic_sub_return_relaxed
#define arch_atomic_sub_return_acquire          arch_atomic_sub_return_acquire
#define arch_atomic_sub_return_release          arch_atomic_sub_return_release
#define arch_atomic_sub_return                  arch_atomic_sub_return

#define arch_atomic_fetch_add_relaxed           arch_atomic_fetch_add_relaxed
#define arch_atomic_fetch_add_acquire           arch_atomic_fetch_add_acquire
#define arch_atomic_fetch_add_release           arch_atomic_fetch_add_release
#define arch_atomic_fetch_add                   arch_atomic_fetch_add

#define arch_atomic_fetch_sub_relaxed           arch_atomic_fetch_sub_relaxed
#define arch_atomic_fetch_sub_acquire           arch_atomic_fetch_sub_acquire
#define arch_atomic_fetch_sub_release           arch_atomic_fetch_sub_release
#define arch_atomic_fetch_sub                   arch_atomic_fetch_sub

#define arch_atomic_fetch_and_relaxed           arch_atomic_fetch_and_relaxed
#define arch_atomic_fetch_and_acquire           arch_atomic_fetch_and_acquire
#define arch_atomic_fetch_and_release           arch_atomic_fetch_and_release
#define arch_atomic_fetch_and                   arch_atomic_fetch_and

#define arch_atomic_fetch_andnot_relaxed        arch_atomic_fetch_andnot_relaxed
#define arch_atomic_fetch_andnot_acquire        arch_atomic_fetch_andnot_acquire
#define arch_atomic_fetch_andnot_release        arch_atomic_fetch_andnot_release
#define arch_atomic_fetch_andnot                arch_atomic_fetch_andnot

#define arch_atomic_fetch_or_relaxed            arch_atomic_fetch_or_relaxed
#define arch_atomic_fetch_or_acquire            arch_atomic_fetch_or_acquire
#define arch_atomic_fetch_or_release            arch_atomic_fetch_or_release
#define arch_atomic_fetch_or                    arch_atomic_fetch_or

#define arch_atomic_fetch_xor_relaxed           arch_atomic_fetch_xor_relaxed
#define arch_atomic_fetch_xor_acquire           arch_atomic_fetch_xor_acquire
#define arch_atomic_fetch_xor_release           arch_atomic_fetch_xor_release
#define arch_atomic_fetch_xor                   arch_atomic_fetch_xor

#define arch_atomic_andnot                      arch_atomic_andnot

/*
 * 64-bit arch_atomic operations.
 */
#define ATOMIC64_INIT                           ATOMIC_INIT
#define arch_atomic64_read                      arch_atomic_read
#define arch_atomic64_set                       arch_atomic_set

#define arch_atomic64_add_return_relaxed        arch_atomic64_add_return_relaxed
#define arch_atomic64_add_return_acquire        arch_atomic64_add_return_acquire
#define arch_atomic64_add_return_release        arch_atomic64_add_return_release
#define arch_atomic64_add_return                arch_atomic64_add_return

#define arch_atomic64_sub_return_relaxed        arch_atomic64_sub_return_relaxed
#define arch_atomic64_sub_return_acquire        arch_atomic64_sub_return_acquire
#define arch_atomic64_sub_return_release        arch_atomic64_sub_return_release
#define arch_atomic64_sub_return                arch_atomic64_sub_return

#define arch_atomic64_fetch_add_relaxed         arch_atomic64_fetch_add_relaxed
#define arch_atomic64_fetch_add_acquire         arch_atomic64_fetch_add_acquire
#define arch_atomic64_fetch_add_release         arch_atomic64_fetch_add_release
#define arch_atomic64_fetch_add                 arch_atomic64_fetch_add

#define arch_atomic64_fetch_sub_relaxed         arch_atomic64_fetch_sub_relaxed
#define arch_atomic64_fetch_sub_acquire         arch_atomic64_fetch_sub_acquire
#define arch_atomic64_fetch_sub_release         arch_atomic64_fetch_sub_release
#define arch_atomic64_fetch_sub                 arch_atomic64_fetch_sub

#define arch_atomic64_fetch_and_relaxed         arch_atomic64_fetch_and_relaxed
#define arch_atomic64_fetch_and_acquire         arch_atomic64_fetch_and_acquire
#define arch_atomic64_fetch_and_release         arch_atomic64_fetch_and_release
#define arch_atomic64_fetch_and                 arch_atomic64_fetch_and

#define arch_atomic64_fetch_andnot_relaxed      arch_atomic64_fetch_andnot_relaxed
#define arch_atomic64_fetch_andnot_acquire      arch_atomic64_fetch_andnot_acquire
#define arch_atomic64_fetch_andnot_release      arch_atomic64_fetch_andnot_release
#define arch_atomic64_fetch_andnot              arch_atomic64_fetch_andnot

#define arch_atomic64_fetch_or_relaxed          arch_atomic64_fetch_or_relaxed
#define arch_atomic64_fetch_or_acquire          arch_atomic64_fetch_or_acquire
#define arch_atomic64_fetch_or_release          arch_atomic64_fetch_or_release
#define arch_atomic64_fetch_or                  arch_atomic64_fetch_or

#define arch_atomic64_fetch_xor_relaxed         arch_atomic64_fetch_xor_relaxed
#define arch_atomic64_fetch_xor_acquire         arch_atomic64_fetch_xor_acquire
#define arch_atomic64_fetch_xor_release         arch_atomic64_fetch_xor_release
#define arch_atomic64_fetch_xor                 arch_atomic64_fetch_xor

#define arch_atomic64_andnot                    arch_atomic64_andnot

#define arch_atomic64_dec_if_positive           arch_atomic64_dec_if_positive

#endif /* __ASM_ATOMIC_H */