diff options
Diffstat (limited to 'arch/s390/include/asm/dma.h')
| -rw-r--r-- | arch/s390/include/asm/dma.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/s390/include/asm/dma.h b/arch/s390/include/asm/dma.h new file mode 100644 index 000000000..7fe3e3195 --- /dev/null +++ b/arch/s390/include/asm/dma.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_S390_DMA_H +#define _ASM_S390_DMA_H + +#include <linux/io.h> + +/* + * MAX_DMA_ADDRESS is ambiguous because on s390 its completely unrelated + * to DMA. It _is_ used for the s390 memory zone split at 2GB caused + * by the 31 bit heritage. + */ +#define MAX_DMA_ADDRESS __va(0x80000000) + +#endif /* _ASM_S390_DMA_H */ |