181 static __inline__ void enable_dma(unsigned int dmanr)  in enable_dma()  argument
185 	if (dmanr != 4) {  in enable_dma()
189 	if (dmanr <= 3) {  in enable_dma()
190 		dma_outb(dmanr, DMA1_MASK_REG);  in enable_dma()
193 		dma_outb(dmanr & 3, DMA2_MASK_REG);  in enable_dma()
197 static __inline__ void disable_dma(unsigned int dmanr)  in disable_dma()  argument
199 	if (dmanr <= 3)  in disable_dma()
200 		dma_outb(dmanr | 4, DMA1_MASK_REG);  in disable_dma()
202 		dma_outb((dmanr & 3) | 4, DMA2_MASK_REG);  in disable_dma()
212 static __inline__ void clear_dma_ff(unsigned int dmanr)  in clear_dma_ff()  argument
214 	if (dmanr <= 3)  in clear_dma_ff()
221 static __inline__ void set_dma_mode(unsigned int dmanr, char mode)  in set_dma_mode()  argument
223 	if (dmanr <= 3)  in set_dma_mode()
224 		dma_outb(mode | dmanr, DMA1_MODE_REG);  in set_dma_mode()
226 		dma_outb(mode | (dmanr & 3), DMA2_MODE_REG);  in set_dma_mode()
234 static __inline__ void set_dma_page(unsigned int dmanr, int pagenr)  in set_dma_page()  argument
236 	switch (dmanr) {  in set_dma_page()
271 static __inline__ void set_dma_addr(unsigned int dmanr, unsigned int phys)  in set_dma_addr()  argument
273 	if (dmanr <= 3) {  in set_dma_addr()
275 			 ((dmanr & 3) << 1) + IO_DMA1_BASE);  in set_dma_addr()
277 			 ((dmanr & 3) << 1) + IO_DMA1_BASE);  in set_dma_addr()
280 			 ((dmanr & 3) << 2) + IO_DMA2_BASE);  in set_dma_addr()
282 			 ((dmanr & 3) << 2) + IO_DMA2_BASE);  in set_dma_addr()
284 	set_dma_page(dmanr, phys >> 16);  in set_dma_addr()
296 static __inline__ void set_dma_count(unsigned int dmanr, unsigned int count)  in set_dma_count()  argument
299 	if (dmanr <= 3) {  in set_dma_count()
301 			 ((dmanr & 3) << 1) + 1 + IO_DMA1_BASE);  in set_dma_count()
303 			 ((dmanr & 3) << 1) + 1 + IO_DMA1_BASE);  in set_dma_count()
306 			 ((dmanr & 3) << 2) + 2 + IO_DMA2_BASE);  in set_dma_count()
308 			 ((dmanr & 3) << 2) + 2 + IO_DMA2_BASE);  in set_dma_count()
321 static __inline__ int get_dma_residue(unsigned int dmanr)  in get_dma_residue()  argument
323 	unsigned int io_port = (dmanr <= 3)  in get_dma_residue()
324 	    ? ((dmanr & 3) << 1) + 1 + IO_DMA1_BASE  in get_dma_residue()
325 	    : ((dmanr & 3) << 2) + 2 + IO_DMA2_BASE;  in get_dma_residue()
333 	return (dmanr <= 3) ? count : (count << 1);  in get_dma_residue()
339 extern int request_dma(unsigned int dmanr, const char *device_id);
341 extern void free_dma(unsigned int dmanr);