166 static inline void enable_dma(unsigned int dmanr)  in enable_dma()  argument
168 	if (dmanr <= 3)  in enable_dma()
169 		dma_outb(dmanr, DMA1_MASK_REG);  in enable_dma()
171 		dma_outb(dmanr & 3, DMA2_MASK_REG);  in enable_dma()
174 static inline void disable_dma(unsigned int dmanr)  in disable_dma()  argument
176 	if (dmanr <= 3)  in disable_dma()
177 		dma_outb(dmanr | 4, DMA1_MASK_REG);  in disable_dma()
179 		dma_outb((dmanr & 3) | 4, DMA2_MASK_REG);  in disable_dma()
189 static inline void clear_dma_ff(unsigned int dmanr)  in clear_dma_ff()  argument
191 	if (dmanr <= 3)  in clear_dma_ff()
198 static inline void set_dma_mode(unsigned int dmanr, char mode)  in set_dma_mode()  argument
200 	if (dmanr <= 3)  in set_dma_mode()
201 		dma_outb(mode | dmanr, DMA1_MODE_REG);  in set_dma_mode()
203 		dma_outb(mode | (dmanr & 3), DMA2_MODE_REG);  in set_dma_mode()
211 static inline void set_dma_page(unsigned int dmanr, char pagenr)  in set_dma_page()  argument
213 	switch (dmanr) {  in set_dma_page()
242 static inline void set_dma_addr(unsigned int dmanr, unsigned int a)  in set_dma_addr()  argument
244 	set_dma_page(dmanr, a>>16);  in set_dma_addr()
245 	if (dmanr <= 3)  {  in set_dma_addr()
246 		dma_outb(a & 0xff, ((dmanr & 3) << 1) + IO_DMA1_BASE);  in set_dma_addr()
247 		dma_outb((a >> 8) & 0xff, ((dmanr & 3) << 1) + IO_DMA1_BASE);  in set_dma_addr()
249 		dma_outb((a >> 1) & 0xff, ((dmanr & 3) << 2) + IO_DMA2_BASE);  in set_dma_addr()
250 		dma_outb((a >> 9) & 0xff, ((dmanr & 3) << 2) + IO_DMA2_BASE);  in set_dma_addr()
263 static inline void set_dma_count(unsigned int dmanr, unsigned int count)  in set_dma_count()  argument
266 	if (dmanr <= 3)  {  in set_dma_count()
267 		dma_outb(count & 0xff, ((dmanr & 3) << 1) + 1 + IO_DMA1_BASE);  in set_dma_count()
269 			 ((dmanr & 3) << 1) + 1 + IO_DMA1_BASE);  in set_dma_count()
272 			 ((dmanr & 3) << 2) + 2 + IO_DMA2_BASE);  in set_dma_count()
274 			 ((dmanr & 3) << 2) + 2 + IO_DMA2_BASE);  in set_dma_count()
287 static inline int get_dma_residue(unsigned int dmanr)  in get_dma_residue()  argument
293 	io_port = (dmanr <= 3) ? ((dmanr & 3) << 1) + 1 + IO_DMA1_BASE  in get_dma_residue()
294 		: ((dmanr & 3) << 2) + 2 + IO_DMA2_BASE;  in get_dma_residue()
299 	return (dmanr <= 3) ? count : (count << 1);  in get_dma_residue()
305 extern int request_dma(unsigned int dmanr, const char *device_id);
306 extern void free_dma(unsigned int dmanr);