diff options
Diffstat (limited to 'arch/sh/include/asm/atomic.h')
| -rw-r--r-- | arch/sh/include/asm/atomic.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/sh/include/asm/atomic.h b/arch/sh/include/asm/atomic.h new file mode 100644 index 0000000000..7a18cb2a1c --- /dev/null +++ b/arch/sh/include/asm/atomic.h @@ -0,0 +1,35 @@ +/* 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 + +#endif /* CONFIG_CPU_J2 */ + +#endif /* __ASM_SH_ATOMIC_H */ |