227 lines
8.4 KiB
C
227 lines
8.4 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Based on arch/arm/include/asm/atomic.h
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*
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* Copyright (C) 1996 Russell King.
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* Copyright (C) 2002 Deep Blue Solutions Ltd.
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* Copyright (C) 2012 ARM Ltd.
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*/
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#ifndef __ASM_ATOMIC_H
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#define __ASM_ATOMIC_H
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <asm/barrier.h>
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#include <asm/cmpxchg.h>
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#include <asm/lse.h>
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#define ATOMIC_OP(op) \
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static __always_inline void arch_##op(int i, atomic_t *v) \
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{ \
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__lse_ll_sc_body(op, i, v); \
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}
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ATOMIC_OP(atomic_andnot)
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ATOMIC_OP(atomic_or)
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ATOMIC_OP(atomic_xor)
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ATOMIC_OP(atomic_add)
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ATOMIC_OP(atomic_and)
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ATOMIC_OP(atomic_sub)
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#undef ATOMIC_OP
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#define ATOMIC_FETCH_OP(name, op) \
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static __always_inline int arch_##op##name(int i, atomic_t *v) \
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{ \
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return __lse_ll_sc_body(op##name, i, v); \
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}
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#define ATOMIC_FETCH_OPS(op) \
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ATOMIC_FETCH_OP(_relaxed, op) \
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ATOMIC_FETCH_OP(_acquire, op) \
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ATOMIC_FETCH_OP(_release, op) \
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ATOMIC_FETCH_OP( , op)
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ATOMIC_FETCH_OPS(atomic_fetch_andnot)
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ATOMIC_FETCH_OPS(atomic_fetch_or)
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ATOMIC_FETCH_OPS(atomic_fetch_xor)
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ATOMIC_FETCH_OPS(atomic_fetch_add)
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ATOMIC_FETCH_OPS(atomic_fetch_and)
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ATOMIC_FETCH_OPS(atomic_fetch_sub)
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ATOMIC_FETCH_OPS(atomic_add_return)
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ATOMIC_FETCH_OPS(atomic_sub_return)
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#undef ATOMIC_FETCH_OP
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#undef ATOMIC_FETCH_OPS
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#define ATOMIC64_OP(op) \
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static __always_inline void arch_##op(long i, atomic64_t *v) \
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{ \
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__lse_ll_sc_body(op, i, v); \
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}
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ATOMIC64_OP(atomic64_andnot)
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ATOMIC64_OP(atomic64_or)
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ATOMIC64_OP(atomic64_xor)
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ATOMIC64_OP(atomic64_add)
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ATOMIC64_OP(atomic64_and)
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ATOMIC64_OP(atomic64_sub)
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#undef ATOMIC64_OP
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#define ATOMIC64_FETCH_OP(name, op) \
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static __always_inline long arch_##op##name(long i, atomic64_t *v) \
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{ \
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return __lse_ll_sc_body(op##name, i, v); \
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}
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#define ATOMIC64_FETCH_OPS(op) \
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ATOMIC64_FETCH_OP(_relaxed, op) \
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ATOMIC64_FETCH_OP(_acquire, op) \
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ATOMIC64_FETCH_OP(_release, op) \
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ATOMIC64_FETCH_OP( , op)
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ATOMIC64_FETCH_OPS(atomic64_fetch_andnot)
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ATOMIC64_FETCH_OPS(atomic64_fetch_or)
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ATOMIC64_FETCH_OPS(atomic64_fetch_xor)
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ATOMIC64_FETCH_OPS(atomic64_fetch_add)
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ATOMIC64_FETCH_OPS(atomic64_fetch_and)
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ATOMIC64_FETCH_OPS(atomic64_fetch_sub)
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ATOMIC64_FETCH_OPS(atomic64_add_return)
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ATOMIC64_FETCH_OPS(atomic64_sub_return)
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#undef ATOMIC64_FETCH_OP
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#undef ATOMIC64_FETCH_OPS
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static __always_inline long arch_atomic64_dec_if_positive(atomic64_t *v)
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{
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return __lse_ll_sc_body(atomic64_dec_if_positive, v);
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}
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#define arch_atomic_read(v) __READ_ONCE((v)->counter)
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#define arch_atomic_set(v, i) __WRITE_ONCE(((v)->counter), (i))
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#define arch_atomic_add_return_relaxed arch_atomic_add_return_relaxed
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#define arch_atomic_add_return_acquire arch_atomic_add_return_acquire
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#define arch_atomic_add_return_release arch_atomic_add_return_release
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#define arch_atomic_add_return arch_atomic_add_return
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#define arch_atomic_sub_return_relaxed arch_atomic_sub_return_relaxed
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#define arch_atomic_sub_return_acquire arch_atomic_sub_return_acquire
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#define arch_atomic_sub_return_release arch_atomic_sub_return_release
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#define arch_atomic_sub_return arch_atomic_sub_return
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#define arch_atomic_fetch_add_relaxed arch_atomic_fetch_add_relaxed
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#define arch_atomic_fetch_add_acquire arch_atomic_fetch_add_acquire
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#define arch_atomic_fetch_add_release arch_atomic_fetch_add_release
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#define arch_atomic_fetch_add arch_atomic_fetch_add
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#define arch_atomic_fetch_sub_relaxed arch_atomic_fetch_sub_relaxed
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#define arch_atomic_fetch_sub_acquire arch_atomic_fetch_sub_acquire
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#define arch_atomic_fetch_sub_release arch_atomic_fetch_sub_release
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#define arch_atomic_fetch_sub arch_atomic_fetch_sub
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#define arch_atomic_fetch_and_relaxed arch_atomic_fetch_and_relaxed
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#define arch_atomic_fetch_and_acquire arch_atomic_fetch_and_acquire
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#define arch_atomic_fetch_and_release arch_atomic_fetch_and_release
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#define arch_atomic_fetch_and arch_atomic_fetch_and
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#define arch_atomic_fetch_andnot_relaxed arch_atomic_fetch_andnot_relaxed
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#define arch_atomic_fetch_andnot_acquire arch_atomic_fetch_andnot_acquire
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#define arch_atomic_fetch_andnot_release arch_atomic_fetch_andnot_release
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#define arch_atomic_fetch_andnot arch_atomic_fetch_andnot
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#define arch_atomic_fetch_or_relaxed arch_atomic_fetch_or_relaxed
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#define arch_atomic_fetch_or_acquire arch_atomic_fetch_or_acquire
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#define arch_atomic_fetch_or_release arch_atomic_fetch_or_release
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#define arch_atomic_fetch_or arch_atomic_fetch_or
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#define arch_atomic_fetch_xor_relaxed arch_atomic_fetch_xor_relaxed
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#define arch_atomic_fetch_xor_acquire arch_atomic_fetch_xor_acquire
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#define arch_atomic_fetch_xor_release arch_atomic_fetch_xor_release
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#define arch_atomic_fetch_xor arch_atomic_fetch_xor
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#define arch_atomic_xchg_relaxed(v, new) \
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arch_xchg_relaxed(&((v)->counter), (new))
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#define arch_atomic_xchg_acquire(v, new) \
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arch_xchg_acquire(&((v)->counter), (new))
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#define arch_atomic_xchg_release(v, new) \
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arch_xchg_release(&((v)->counter), (new))
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#define arch_atomic_xchg(v, new) \
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arch_xchg(&((v)->counter), (new))
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#define arch_atomic_cmpxchg_relaxed(v, old, new) \
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arch_cmpxchg_relaxed(&((v)->counter), (old), (new))
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#define arch_atomic_cmpxchg_acquire(v, old, new) \
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arch_cmpxchg_acquire(&((v)->counter), (old), (new))
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#define arch_atomic_cmpxchg_release(v, old, new) \
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arch_cmpxchg_release(&((v)->counter), (old), (new))
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#define arch_atomic_cmpxchg(v, old, new) \
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arch_cmpxchg(&((v)->counter), (old), (new))
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#define arch_atomic_andnot arch_atomic_andnot
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/*
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* 64-bit arch_atomic operations.
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*/
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#define ATOMIC64_INIT ATOMIC_INIT
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#define arch_atomic64_read arch_atomic_read
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#define arch_atomic64_set arch_atomic_set
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#define arch_atomic64_add_return_relaxed arch_atomic64_add_return_relaxed
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#define arch_atomic64_add_return_acquire arch_atomic64_add_return_acquire
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#define arch_atomic64_add_return_release arch_atomic64_add_return_release
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#define arch_atomic64_add_return arch_atomic64_add_return
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#define arch_atomic64_sub_return_relaxed arch_atomic64_sub_return_relaxed
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#define arch_atomic64_sub_return_acquire arch_atomic64_sub_return_acquire
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#define arch_atomic64_sub_return_release arch_atomic64_sub_return_release
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#define arch_atomic64_sub_return arch_atomic64_sub_return
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#define arch_atomic64_fetch_add_relaxed arch_atomic64_fetch_add_relaxed
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#define arch_atomic64_fetch_add_acquire arch_atomic64_fetch_add_acquire
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#define arch_atomic64_fetch_add_release arch_atomic64_fetch_add_release
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#define arch_atomic64_fetch_add arch_atomic64_fetch_add
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#define arch_atomic64_fetch_sub_relaxed arch_atomic64_fetch_sub_relaxed
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#define arch_atomic64_fetch_sub_acquire arch_atomic64_fetch_sub_acquire
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#define arch_atomic64_fetch_sub_release arch_atomic64_fetch_sub_release
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#define arch_atomic64_fetch_sub arch_atomic64_fetch_sub
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#define arch_atomic64_fetch_and_relaxed arch_atomic64_fetch_and_relaxed
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#define arch_atomic64_fetch_and_acquire arch_atomic64_fetch_and_acquire
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#define arch_atomic64_fetch_and_release arch_atomic64_fetch_and_release
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#define arch_atomic64_fetch_and arch_atomic64_fetch_and
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#define arch_atomic64_fetch_andnot_relaxed arch_atomic64_fetch_andnot_relaxed
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#define arch_atomic64_fetch_andnot_acquire arch_atomic64_fetch_andnot_acquire
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#define arch_atomic64_fetch_andnot_release arch_atomic64_fetch_andnot_release
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#define arch_atomic64_fetch_andnot arch_atomic64_fetch_andnot
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#define arch_atomic64_fetch_or_relaxed arch_atomic64_fetch_or_relaxed
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#define arch_atomic64_fetch_or_acquire arch_atomic64_fetch_or_acquire
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#define arch_atomic64_fetch_or_release arch_atomic64_fetch_or_release
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#define arch_atomic64_fetch_or arch_atomic64_fetch_or
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#define arch_atomic64_fetch_xor_relaxed arch_atomic64_fetch_xor_relaxed
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#define arch_atomic64_fetch_xor_acquire arch_atomic64_fetch_xor_acquire
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#define arch_atomic64_fetch_xor_release arch_atomic64_fetch_xor_release
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#define arch_atomic64_fetch_xor arch_atomic64_fetch_xor
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#define arch_atomic64_xchg_relaxed arch_atomic_xchg_relaxed
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#define arch_atomic64_xchg_acquire arch_atomic_xchg_acquire
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#define arch_atomic64_xchg_release arch_atomic_xchg_release
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#define arch_atomic64_xchg arch_atomic_xchg
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#define arch_atomic64_cmpxchg_relaxed arch_atomic_cmpxchg_relaxed
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#define arch_atomic64_cmpxchg_acquire arch_atomic_cmpxchg_acquire
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#define arch_atomic64_cmpxchg_release arch_atomic_cmpxchg_release
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#define arch_atomic64_cmpxchg arch_atomic_cmpxchg
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#define arch_atomic64_andnot arch_atomic64_andnot
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#define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
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#endif /* __ASM_ATOMIC_H */
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