1 #ifndef _M68K_DMA_H
2 #define _M68K_DMA_H 1
3 
4 #include <linux/config.h>
5 
6 /* it's useless on the m68k, but unfortunately needed by the new
7    bootmem allocator (but this should do it for this) */
8 #define MAX_DMA_ADDRESS PAGE_OFFSET
9 
10 #define MAX_DMA_CHANNELS 8
11 
12 extern int request_dma(unsigned int dmanr, const char * device_id);	/* reserve a DMA channel */
13 extern void free_dma(unsigned int dmanr);	/* release it again */
14 
15 #ifdef CONFIG_PCI
16 extern int isa_dma_bridge_buggy;
17 #else
18 #define isa_dma_bridge_buggy    (0)
19 #endif
20 
21 #endif /* _M68K_DMA_H */
22