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
12extern int request_dma(unsigned int dmanr, const char *device_id);
13extern void free_dma(unsigned int dmanr);
14
15#endif /* __ASM_GENERIC_DMA_H */

 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
12extern int request_dma(unsigned int dmanr, const char *device_id);
13extern void free_dma(unsigned int dmanr);
14
15#endif /* __ASM_GENERIC_DMA_H */