167 static inline void enable_dma(unsigned int dmanr)  in enable_dma()  argument
169 	if (dmanr <= 3)  in enable_dma()
170 		dma_outb(dmanr, DMA1_MASK_REG);  in enable_dma()
172 		dma_outb(dmanr & 3, DMA2_MASK_REG);  in enable_dma()
175 static inline void disable_dma(unsigned int dmanr)  in disable_dma()  argument
177 	if (dmanr <= 3)  in disable_dma()
178 		dma_outb(dmanr | 4, DMA1_MASK_REG);  in disable_dma()
180 		dma_outb((dmanr & 3) | 4, DMA2_MASK_REG);  in disable_dma()
190 static inline void clear_dma_ff(unsigned int dmanr)  in clear_dma_ff()  argument
192 	if (dmanr <= 3)  in clear_dma_ff()
199 static inline void set_dma_mode(unsigned int dmanr, char mode)  in set_dma_mode()  argument
201 	if (dmanr <= 3)  in set_dma_mode()
202 		dma_outb(mode | dmanr, DMA1_MODE_REG);  in set_dma_mode()
204 		dma_outb(mode | (dmanr & 3), DMA2_MODE_REG);  in set_dma_mode()
212 static inline void set_dma_page(unsigned int dmanr, char pagenr)  in set_dma_page()  argument
214 	switch (dmanr) {  in set_dma_page()
243 static inline void set_dma_addr(unsigned int dmanr, unsigned int a)  in set_dma_addr()  argument
245 	set_dma_page(dmanr, a>>16);  in set_dma_addr()
246 	if (dmanr <= 3)  {  in set_dma_addr()
247 		dma_outb(a & 0xff, ((dmanr & 3) << 1) + IO_DMA1_BASE);  in set_dma_addr()
248 		dma_outb((a >> 8) & 0xff, ((dmanr & 3) << 1) + IO_DMA1_BASE);  in set_dma_addr()
250 		dma_outb((a >> 1) & 0xff, ((dmanr & 3) << 2) + IO_DMA2_BASE);  in set_dma_addr()
251 		dma_outb((a >> 9) & 0xff, ((dmanr & 3) << 2) + IO_DMA2_BASE);  in set_dma_addr()
264 static inline void set_dma_count(unsigned int dmanr, unsigned int count)  in set_dma_count()  argument
267 	if (dmanr <= 3)  {  in set_dma_count()
268 		dma_outb(count & 0xff, ((dmanr & 3) << 1) + 1 + IO_DMA1_BASE);  in set_dma_count()
270 			 ((dmanr & 3) << 1) + 1 + IO_DMA1_BASE);  in set_dma_count()
273 			 ((dmanr & 3) << 2) + 2 + IO_DMA2_BASE);  in set_dma_count()
275 			 ((dmanr & 3) << 2) + 2 + IO_DMA2_BASE);  in set_dma_count()
288 static inline int get_dma_residue(unsigned int dmanr)  in get_dma_residue()  argument
294 	io_port = (dmanr <= 3) ? ((dmanr & 3) << 1) + 1 + IO_DMA1_BASE  in get_dma_residue()
295 		: ((dmanr & 3) << 2) + 2 + IO_DMA2_BASE;  in get_dma_residue()
300 	return (dmanr <= 3) ? count : (count << 1);  in get_dma_residue()
306 extern int request_dma(unsigned int dmanr, const char *device_id);
307 extern void free_dma(unsigned int dmanr);