diff options
Diffstat (limited to 'arch/nds32')
| -rw-r--r-- | arch/nds32/include/asm/dma-mapping.h | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/arch/nds32/include/asm/dma-mapping.h b/arch/nds32/include/asm/dma-mapping.h index e6808dc840..c8876ceadd 100644 --- a/arch/nds32/include/asm/dma-mapping.h +++ b/arch/nds32/include/asm/dma-mapping.h @@ -6,7 +6,11 @@ #ifndef __ASM_NDS_DMA_MAPPING_H #define __ASM_NDS_DMA_MAPPING_H +#include <common.h> +#include <asm/cache.h> +#include <cpu_func.h> #include <linux/dma-direction.h> +#include <malloc.h> static void *dma_alloc_coherent(size_t len, unsigned long *handle) { @@ -17,12 +21,27 @@ static void *dma_alloc_coherent(size_t len, unsigned long *handle) static inline unsigned long dma_map_single(volatile void *vaddr, size_t len, enum dma_data_direction dir) { - return (unsigned long)vaddr; + unsigned long addr = (unsigned long)vaddr; + + len = ALIGN(len, ARCH_DMA_MINALIGN); + + if (dir == DMA_FROM_DEVICE) + invalidate_dcache_range(addr, addr + len); + else + flush_dcache_range(addr, addr + len); + + return addr; } static inline void dma_unmap_single(volatile void *vaddr, size_t len, - unsigned long paddr) + enum dma_data_direction dir) { + unsigned long addr = (unsigned long)vaddr; + + len = ALIGN(len, ARCH_DMA_MINALIGN); + + if (dir != DMA_TO_DEVICE) + invalidate_dcache_range(addr, addr + len); } #endif /* __ASM_NDS_DMA_MAPPING_H */ |