141 static __inline__ void enable_dma(unsigned int dmanr)  in enable_dma()  argument
143 	if (dmanr<=3)  in enable_dma()
144 		dma_outb(dmanr,  DMA1_MASK_REG);  in enable_dma()
146 		dma_outb(dmanr & 3,  DMA2_MASK_REG);  in enable_dma()
149 static __inline__ void disable_dma(unsigned int dmanr)  in disable_dma()  argument
151 	if (dmanr<=3)  in disable_dma()
152 		dma_outb(dmanr | 4,  DMA1_MASK_REG);  in disable_dma()
154 		dma_outb((dmanr & 3) | 4,  DMA2_MASK_REG);  in disable_dma()
164 static __inline__ void clear_dma_ff(unsigned int dmanr)  in clear_dma_ff()  argument
166 	if (dmanr<=3)  in clear_dma_ff()
173 static __inline__ void set_dma_mode(unsigned int dmanr, char mode)  in set_dma_mode()  argument
175 	if (dmanr<=3)  in set_dma_mode()
176 		dma_outb(mode | dmanr,  DMA1_MODE_REG);  in set_dma_mode()
178 		dma_outb(mode | (dmanr&3),  DMA2_MODE_REG);  in set_dma_mode()
184 static __inline__ void set_dma_addr(unsigned int dmanr, unsigned int a)  in set_dma_addr()  argument
186 	if (dmanr <= 3)  {  in set_dma_addr()
187 	    dma_outb( a & 0xff, ((dmanr&3)<<1) + IO_DMA1_BASE );  in set_dma_addr()
188             dma_outb( (a>>8) & 0xff, ((dmanr&3)<<1) + IO_DMA1_BASE );  in set_dma_addr()
190 	    dma_outb( (a>>1) & 0xff, ((dmanr&3)<<2) + IO_DMA2_BASE );  in set_dma_addr()
191 	    dma_outb( (a>>9) & 0xff, ((dmanr&3)<<2) + IO_DMA2_BASE );  in set_dma_addr()
204 static __inline__ void set_dma_count(unsigned int dmanr, unsigned int count)  in set_dma_count()  argument
207 	if (dmanr <= 3)  {  in set_dma_count()
208 	    dma_outb( count & 0xff, ((dmanr&3)<<1) + 1 + IO_DMA1_BASE );  in set_dma_count()
209 	    dma_outb( (count>>8) & 0xff, ((dmanr&3)<<1) + 1 + IO_DMA1_BASE );  in set_dma_count()
211 	    dma_outb( (count>>1) & 0xff, ((dmanr&3)<<2) + 2 + IO_DMA2_BASE );  in set_dma_count()
212 	    dma_outb( (count>>9) & 0xff, ((dmanr&3)<<2) + 2 + IO_DMA2_BASE );  in set_dma_count()
225 static __inline__ int get_dma_residue(unsigned int dmanr)  in get_dma_residue()  argument
227 	unsigned int io_port = (dmanr<=3)? ((dmanr&3)<<1) + 1 + IO_DMA1_BASE  in get_dma_residue()
228 					 : ((dmanr&3)<<2) + 2 + IO_DMA2_BASE;  in get_dma_residue()
236 	return (dmanr<=3)? count : (count<<1);  in get_dma_residue()
241 extern int request_dma(unsigned int dmanr, const char * device_id);	/* reserve a DMA channel */
242 extern void free_dma(unsigned int dmanr);	/* release it again */