1/*
 2 *  include/asm-s390/dma.h
 3 *
 4 *  S390 version
 5 */
 6
 7#ifndef _ASM_DMA_H
 8#define _ASM_DMA_H
 9
10#include <asm/io.h>		/* need byte IO */
11
 
 
 
 
 
12#define MAX_DMA_ADDRESS         0x80000000
13
14#define free_dma(x)	do { } while (0)
 
 
 
 
15
16#endif /* _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
15extern int isa_dma_bridge_buggy;
16#else
17#define isa_dma_bridge_buggy	(0)
18#endif
19
20#endif /* _ASM_S390_DMA_H */