diff options
author | Yann Sionneau <ysionneau@kalray.eu> | 2021-03-05 19:33:24 +0100 |
---|---|---|
committer | Sascha Hauer <s.hauer@pengutronix.de> | 2021-03-17 11:55:30 +0100 |
commit | b329e641e71f438bfd338b20c30b0c810b671225 (patch) | |
tree | 48e7d58f971e175fc3fc6414ad10acead008e9c2 /arch/kvx | |
parent | ed120cf6c2d92ffaeb2a75e5205ec68cd28123b5 (diff) | |
download | barebox-b329e641e71f438bfd338b20c30b0c810b671225.tar.gz |
kvx: Implement dcache invalidation primitive
Signed-off-by: Jules Maselbas <jmaselbas@kalray.eu>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/kvx')
-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(); + } +} |