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