| Jan Glauber | 828b35f | 2012-11-29 14:33:30 +0100 | [diff] [blame] | 1 | #ifndef _ASM_S390_DMA_H |
| 2 | #define _ASM_S390_DMA_H |
| 3 | |
| 4 | #include <asm/io.h> |
| 5 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | /* |
| Jan Glauber | 828b35f | 2012-11-29 14:33:30 +0100 | [diff] [blame] | 7 | * MAX_DMA_ADDRESS is ambiguous because on s390 its completely unrelated |
| 8 | * to DMA. It _is_ used for the s390 memory zone split at 2GB caused |
| 9 | * by the 31 bit heritage. |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | */ |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | #define MAX_DMA_ADDRESS 0x80000000 |
| 12 | |
| Heiko Carstens | 87890f9 | 2013-01-07 13:52:53 +0100 | [diff] [blame^] | 13 | #ifdef CONFIG_PCI |
| 14 | extern int isa_dma_bridge_buggy; |
| 15 | #else |
| 16 | #define isa_dma_bridge_buggy (0) |
| 17 | #endif |
| 18 | |
| Jan Glauber | 828b35f | 2012-11-29 14:33:30 +0100 | [diff] [blame] | 19 | #endif /* _ASM_S390_DMA_H */ |