| Arnd Bergmann | ae49e80 | 2009-05-13 22:56:34 +0000 | [diff] [blame] | 1 | #ifndef __ASM_GENERIC_DMA_H |
| 2 | #define __ASM_GENERIC_DMA_H |
| 3 | /* |
| 4 | * This file traditionally describes the i8237 PC style DMA controller. |
| 5 | * Most architectures don't have these any more and can get the minimal |
| 6 | * implementation from kernel/dma.c by not defining MAX_DMA_CHANNELS. |
| 7 | * |
| 8 | * Some code relies on seeing MAX_DMA_ADDRESS though. |
| 9 | */ |
| 10 | #define MAX_DMA_ADDRESS PAGE_OFFSET |
| 11 | |
| 12 | extern int request_dma(unsigned int dmanr, const char *device_id); |
| 13 | extern void free_dma(unsigned int dmanr); |
| 14 | |
| 15 | #endif /* __ASM_GENERIC_DMA_H */ |