dma.h

来自「linux 内核源代码」· C头文件 代码 · 共 21 行

#ifndef _M68K_DMA_H
#define _M68K_DMA_H 1


/* it's useless on the m68k, but unfortunately needed by the new
   bootmem allocator (but this should do it for this) */
#define MAX_DMA_ADDRESS PAGE_OFFSET

#define MAX_DMA_CHANNELS 8

extern int request_dma(unsigned int dmanr, const char * device_id);	/* reserve a DMA channel */
extern void free_dma(unsigned int dmanr);	/* release it again */

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

#endif /* _M68K_DMA_H */