182 static __inline__ void enable_dma(unsigned int dmanr)  in enable_dma()  argument
186 	if (dmanr != 4) {  in enable_dma()
190 	if (dmanr <= 3) {  in enable_dma()
191 		dma_outb(dmanr, DMA1_MASK_REG);  in enable_dma()
194 		dma_outb(dmanr & 3, DMA2_MASK_REG);  in enable_dma()
198 static __inline__ void disable_dma(unsigned int dmanr)  in disable_dma()  argument
200 	if (dmanr <= 3)  in disable_dma()
201 		dma_outb(dmanr | 4, DMA1_MASK_REG);  in disable_dma()
203 		dma_outb((dmanr & 3) | 4, DMA2_MASK_REG);  in disable_dma()
213 static __inline__ void clear_dma_ff(unsigned int dmanr)  in clear_dma_ff()  argument
215 	if (dmanr <= 3)  in clear_dma_ff()
222 static __inline__ void set_dma_mode(unsigned int dmanr, char mode)  in set_dma_mode()  argument
224 	if (dmanr <= 3)  in set_dma_mode()
225 		dma_outb(mode | dmanr, DMA1_MODE_REG);  in set_dma_mode()
227 		dma_outb(mode | (dmanr & 3), DMA2_MODE_REG);  in set_dma_mode()
235 static __inline__ void set_dma_page(unsigned int dmanr, int pagenr)  in set_dma_page()  argument
237 	switch (dmanr) {  in set_dma_page()
272 static __inline__ void set_dma_addr(unsigned int dmanr, unsigned int phys)  in set_dma_addr()  argument
274 	if (dmanr <= 3) {  in set_dma_addr()
276 			 ((dmanr & 3) << 1) + IO_DMA1_BASE);  in set_dma_addr()
278 			 ((dmanr & 3) << 1) + IO_DMA1_BASE);  in set_dma_addr()
281 			 ((dmanr & 3) << 2) + IO_DMA2_BASE);  in set_dma_addr()
283 			 ((dmanr & 3) << 2) + IO_DMA2_BASE);  in set_dma_addr()
285 	set_dma_page(dmanr, phys >> 16);  in set_dma_addr()
297 static __inline__ void set_dma_count(unsigned int dmanr, unsigned int count)  in set_dma_count()  argument
300 	if (dmanr <= 3) {  in set_dma_count()
302 			 ((dmanr & 3) << 1) + 1 + IO_DMA1_BASE);  in set_dma_count()
304 			 ((dmanr & 3) << 1) + 1 + IO_DMA1_BASE);  in set_dma_count()
307 			 ((dmanr & 3) << 2) + 2 + IO_DMA2_BASE);  in set_dma_count()
309 			 ((dmanr & 3) << 2) + 2 + IO_DMA2_BASE);  in set_dma_count()
322 static __inline__ int get_dma_residue(unsigned int dmanr)  in get_dma_residue()  argument
324 	unsigned int io_port = (dmanr <= 3)  in get_dma_residue()
325 	    ? ((dmanr & 3) << 1) + 1 + IO_DMA1_BASE  in get_dma_residue()
326 	    : ((dmanr & 3) << 2) + 2 + IO_DMA2_BASE;  in get_dma_residue()
334 	return (dmanr <= 3) ? count : (count << 1);  in get_dma_residue()
340 extern int request_dma(unsigned int dmanr, const char *device_id);
342 extern void free_dma(unsigned int dmanr);