arch/s390/include/asm/dma.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_S390_DMA_H
   3 #define _ASM_S390_DMA_H
   4
   5 #include <asm/io.h>
   6
   7 /*
   8  * MAX_DMA_ADDRESS is ambiguous because on s390 its completely unrelated
   9  * to DMA. It _is_ used for the s390 memory zone split at 2GB caused
  10  * by the 31 bit heritage.
  11  */
  12 #define MAX_DMA_ADDRESS         0x80000000
  13
  14 #ifdef CONFIG_PCI
  15 extern int isa_dma_bridge_buggy;
  16 #else
  17 #define isa_dma_bridge_buggy    (0)
  18 #endif
  19
  20 #endif /* _ASM_S390_DMA_H */