diff options
-rw-r--r-- | arch/kvx/Kconfig | 1 | ||||
-rw-r--r-- | arch/kvx/include/asm/cache.h | 13 | ||||
-rw-r--r-- | arch/kvx/lib/Makefile | 2 | ||||
-rw-r--r-- | arch/kvx/lib/cache.c | 25 |
4 files changed, 40 insertions, 1 deletions
diff --git a/arch/kvx/Kconfig b/arch/kvx/Kconfig index 8483ae6e65..4e02613ec7 100644 --- a/arch/kvx/Kconfig +++ b/arch/kvx/Kconfig @@ -12,6 +12,7 @@ config KVX select FLEXIBLE_BOOTARGS select GENERIC_FIND_NEXT_BIT select HAS_ARCH_SJLJ + select HAS_CACHE select LIBFDT select MFD_SYSCON select OF_BAREBOX_DRIVERS diff --git a/arch/kvx/include/asm/cache.h b/arch/kvx/include/asm/cache.h index 3be1767250..0bf3c8f06e 100644 --- a/arch/kvx/include/asm/cache.h +++ b/arch/kvx/include/asm/cache.h @@ -8,6 +8,8 @@ #include <linux/types.h> +void invalidate_dcache_range(unsigned long addr, unsigned long stop); + static inline void sync_caches_for_execution(void) { __builtin_kvx_fence(); @@ -15,4 +17,15 @@ static inline void sync_caches_for_execution(void) __builtin_kvx_barrier(); } +static inline void sync_dcache_icache(void) +{ + sync_caches_for_execution(); +} + +static inline void dcache_inval(void) +{ + __builtin_kvx_fence(); + __builtin_kvx_dinval(); +} + #endif /* __KVX_CACHE_H */ diff --git a/arch/kvx/lib/Makefile b/arch/kvx/lib/Makefile index cee08b0fa7..d271ebccfa 100644 --- a/arch/kvx/lib/Makefile +++ b/arch/kvx/lib/Makefile @@ -3,4 +3,4 @@ # Copyright (C) 2019 Kalray Inc. # -obj-y += cpuinfo.o board.o dtb.o poweroff.o bootm.o setjmp.o +obj-y += cpuinfo.o board.o dtb.o poweroff.o bootm.o setjmp.o cache.o diff --git a/arch/kvx/lib/cache.c b/arch/kvx/lib/cache.c new file mode 100644 index 0000000000..bd074de79b --- /dev/null +++ b/arch/kvx/lib/cache.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0-only +// SPDX-FileCopyrightText: 2021 Yann Sionneau <ysionneau@kalray.eu>, Kalray Inc. + +#include <asm/cache.h> +#include <linux/kernel.h> + +#define KVX_DCACHE_LINE_SIZE (64) +#define KVX_DCACHE_SIZE (128*1024) + +void invalidate_dcache_range(unsigned long addr, unsigned long stop) +{ + long size; + + addr = ALIGN_DOWN(addr, KVX_DCACHE_LINE_SIZE); + size = stop - addr; + + if (size < KVX_DCACHE_SIZE) { + while (addr < stop) { + __builtin_kvx_dinvall((void *)addr); + addr += KVX_DCACHE_LINE_SIZE; + } + } else { + __builtin_kvx_dinval(); + } +} |