LXR linux/arch/s390/include/asm/dma.h

   1#ifndef _ASM_S390_DMA_H
   2#define _ASM_S390_DMA_H
   3
   4#include <asm/io.h>
   5
   6/*
   7 * MAX_DMA_ADDRESS is ambiguous because on s390 its completely unrelated
   8 * to DMA. It _is_ used for the s390 memory zone split at 2GB caused
   9 * by the 31 bit heritage.
  10 */
  11#define MAX_DMA_ADDRESS         0x80000000
  12
  13#ifdef CONFIG_PCI
  14extern int isa_dma_bridge_buggy;
  15#else
  16#define isa_dma_bridge_buggy    (0)
  17#endif
  18
  19#endif /* _ASM_S390_DMA_H */
  20