| /* 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 */ |