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 */ 21