diff options
Diffstat (limited to 'arch/riscv/include/asm/cacheflush.h')
| -rw-r--r-- | arch/riscv/include/asm/cacheflush.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/cacheflush.h b/arch/riscv/include/asm/cacheflush.h new file mode 100644 index 000000000000..0595585013b0 --- /dev/null +++ b/arch/riscv/include/asm/cacheflush.h @@ -0,0 +1,39 @@ +/* + * Copyright (C) 2015 Regents of the University of California + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, version 2. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _ASM_RISCV_CACHEFLUSH_H +#define _ASM_RISCV_CACHEFLUSH_H + +#include <asm-generic/cacheflush.h> + +#undef flush_icache_range +#undef flush_icache_user_range + +static inline void local_flush_icache_all(void) +{ + asm volatile ("fence.i" ::: "memory"); +} + +#ifndef CONFIG_SMP + +#define flush_icache_range(start, end) local_flush_icache_all() +#define flush_icache_user_range(vma, pg, addr, len) local_flush_icache_all() + +#else /* CONFIG_SMP */ + +#define flush_icache_range(start, end) sbi_remote_fence_i(0) +#define flush_icache_user_range(vma, pg, addr, len) sbi_remote_fence_i(0) + +#endif /* CONFIG_SMP */ + +#endif /* _ASM_RISCV_CACHEFLUSH_H */ |