61 lines
1.1 KiB
C
61 lines
1.1 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-only */
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _ASM_ARC_ATOMIC_H
|
||
|
|
#define _ASM_ARC_ATOMIC_H
|
||
|
|
|
||
|
|
#ifndef __ASSEMBLY__
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/compiler.h>
|
||
|
|
#include <asm/cmpxchg.h>
|
||
|
|
#include <asm/barrier.h>
|
||
|
|
#include <asm/smp.h>
|
||
|
|
|
||
|
|
#define arch_atomic_read(v) READ_ONCE((v)->counter)
|
||
|
|
|
||
|
|
#ifdef CONFIG_ARC_HAS_LLSC
|
||
|
|
#include <asm/atomic-llsc.h>
|
||
|
|
#else
|
||
|
|
#include <asm/atomic-spinlock.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define arch_atomic_cmpxchg(v, o, n) \
|
||
|
|
({ \
|
||
|
|
arch_cmpxchg(&((v)->counter), (o), (n)); \
|
||
|
|
})
|
||
|
|
|
||
|
|
#ifdef arch_cmpxchg_relaxed
|
||
|
|
#define arch_atomic_cmpxchg_relaxed(v, o, n) \
|
||
|
|
({ \
|
||
|
|
arch_cmpxchg_relaxed(&((v)->counter), (o), (n)); \
|
||
|
|
})
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define arch_atomic_xchg(v, n) \
|
||
|
|
({ \
|
||
|
|
arch_xchg(&((v)->counter), (n)); \
|
||
|
|
})
|
||
|
|
|
||
|
|
#ifdef arch_xchg_relaxed
|
||
|
|
#define arch_atomic_xchg_relaxed(v, n) \
|
||
|
|
({ \
|
||
|
|
arch_xchg_relaxed(&((v)->counter), (n)); \
|
||
|
|
})
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 64-bit atomics
|
||
|
|
*/
|
||
|
|
#ifdef CONFIG_GENERIC_ATOMIC64
|
||
|
|
#include <asm-generic/atomic64.h>
|
||
|
|
#else
|
||
|
|
#include <asm/atomic64-arcv2.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* !__ASSEMBLY__ */
|
||
|
|
|
||
|
|
#endif
|