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atomic.h
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atomic.h
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/* 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_xchg_relaxed(v, new) \
arch_xchg_relaxed(&((v)->counter), (new))
#define arch_atomic_xchg_acquire(v, new) \
arch_xchg_acquire(&((v)->counter), (new))
#define arch_atomic_xchg_release(v, new) \
arch_xchg_release(&((v)->counter), (new))
#define arch_atomic_xchg(v, new) \
arch_xchg(&((v)->counter), (new))
#define arch_atomic_cmpxchg_relaxed(v, old, new) \
arch_cmpxchg_relaxed(&((v)->counter), (old), (new))
#define arch_atomic_cmpxchg_acquire(v, old, new) \
arch_cmpxchg_acquire(&((v)->counter), (old), (new))
#define arch_atomic_cmpxchg_release(v, old, new) \
arch_cmpxchg_release(&((v)->counter), (old), (new))
#define arch_atomic_cmpxchg(v, old, new) \
arch_cmpxchg(&((v)->counter), (old), (new))
#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_xchg_relaxed arch_atomic_xchg_relaxed
#define arch_atomic64_xchg_acquire arch_atomic_xchg_acquire
#define arch_atomic64_xchg_release arch_atomic_xchg_release
#define arch_atomic64_xchg arch_atomic_xchg
#define arch_atomic64_cmpxchg_relaxed arch_atomic_cmpxchg_relaxed
#define arch_atomic64_cmpxchg_acquire arch_atomic_cmpxchg_acquire
#define arch_atomic64_cmpxchg_release arch_atomic_cmpxchg_release
#define arch_atomic64_cmpxchg arch_atomic_cmpxchg
#define arch_atomic64_andnot arch_atomic64_andnot
#define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
#define ARCH_ATOMIC
#endif /* __ASM_ATOMIC_H */