39 lines
840 B
C
39 lines
840 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_SH_ATOMIC_H
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#define __ASM_SH_ATOMIC_H
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#if defined(CONFIG_CPU_J2)
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#include <asm-generic/atomic.h>
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#else
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/*
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* Atomic operations that C can't guarantee us. Useful for
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* resource counting etc..
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*
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*/
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <asm/cmpxchg.h>
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#include <asm/barrier.h>
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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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#if defined(CONFIG_GUSA_RB)
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#include <asm/atomic-grb.h>
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#elif defined(CONFIG_CPU_SH4A)
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#include <asm/atomic-llsc.h>
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#else
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#include <asm/atomic-irq.h>
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#endif
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#define arch_atomic_xchg(v, new) (arch_xchg(&((v)->counter), new))
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#define arch_atomic_cmpxchg(v, o, n) (arch_cmpxchg(&((v)->counter), (o), (n)))
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#endif /* CONFIG_CPU_J2 */
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#endif /* __ASM_SH_ATOMIC_H */
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