diff options
Diffstat (limited to 'arch/microblaze/include/asm/dma.h')
| -rw-r--r-- | arch/microblaze/include/asm/dma.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/microblaze/include/asm/dma.h b/arch/microblaze/include/asm/dma.h index 0967fa04fc5e..08c073badf19 100644 --- a/arch/microblaze/include/asm/dma.h +++ b/arch/microblaze/include/asm/dma.h @@ -9,8 +9,13 @@ #ifndef _ASM_MICROBLAZE_DMA_H #define _ASM_MICROBLAZE_DMA_H +#ifndef CONFIG_MMU /* we don't have dma address limit. define it as zero to be * unlimited. */ #define MAX_DMA_ADDRESS (0) +#else +/* Virtual address corresponding to last available physical memory address. */ +#define MAX_DMA_ADDRESS (CONFIG_KERNEL_START + memory_size - 1) +#endif #endif /* _ASM_MICROBLAZE_DMA_H */ |