[mirror_ubuntu-focal-kernel.git] / arch / s390 / include / asm / dma.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_S390_DMA_H
#define _ASM_S390_DMA_H

#include <asm/io.h>

/*
 * MAX_DMA_ADDRESS is ambiguous because on s390 its completely unrelated
 * to DMA. It _is_ used for the s390 memory zone split at 2GB caused
 * by the 31 bit heritage.
 */
#define MAX_DMA_ADDRESS         0x80000000

#ifdef CONFIG_PCI
extern int isa_dma_bridge_buggy;
#else
#define isa_dma_bridge_buggy	(0)
#endif

#endif /* _ASM_S390_DMA_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
828b35f6 JG	2	#ifndef _ASM_S390_DMA_H
828b35f6 JG	3	#define _ASM_S390_DMA_H
1da177e4	4
828b35f6	5	#include <asm/io.h>
1da177e4	6
828b35f6 JG	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	*/
1da177e4 LT	12	#define MAX_DMA_ADDRESS 0x80000000
1da177e4 LT	13
87890f92 HC	14	#ifdef CONFIG_PCI
	15	extern int isa_dma_bridge_buggy;
	16	#else
	17	#define isa_dma_bridge_buggy (0)
	18	#endif
	19
828b35f6	20	#endif /* _ASM_S390_DMA_H */