diff options
Diffstat (limited to 'arch/nios2')
| -rw-r--r-- | arch/nios2/include/asm/cache.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/nios2/include/asm/cache.h b/arch/nios2/include/asm/cache.h index c78f343..2cc16e4 100644 --- a/arch/nios2/include/asm/cache.h +++ b/arch/nios2/include/asm/cache.h @@ -27,4 +27,15 @@ extern void flush_dcache (unsigned long start, unsigned long size); extern void flush_icache (unsigned long start, unsigned long size); +/* + * Valid L1 data cache line sizes for the NIOS2 architecture are 4, 16, and 32 + * bytes. If the board configuration has not specified one we default to the + * largest of these values for alignment of DMA buffers. + */ +#ifdef CONFIG_SYS_CACHELINE_SIZE +#define ARCH_DMA_MINALIGN CONFIG_SYS_CACHELINE_SIZE +#else +#define ARCH_DMA_MINALIGN 32 +#endif + #endif /* __ASM_NIOS2_CACHE_H_ */ |