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 */
21