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- #ifndef _ASM_S390_DMA_H
- #define _ASM_S390_DMA_H
- #include <asm/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 0x80000000
- #ifdef CONFIG_PCI
- extern int isa_dma_bridge_buggy;
- #else
- #define isa_dma_bridge_buggy (0)
- #endif
- #endif /* _ASM_S390_DMA_H */
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