Lines Matching defs:dmanr
173 static __inline__ void enable_dma(unsigned int dmanr)
175 if (dmanr<=3)
176 dma_outb(dmanr, DMA1_MASK_REG);
178 dma_outb(dmanr & 3, DMA2_MASK_REG);
181 static __inline__ void disable_dma(unsigned int dmanr)
183 if (dmanr<=3)
184 dma_outb(dmanr | 4, DMA1_MASK_REG);
186 dma_outb((dmanr & 3) | 4, DMA2_MASK_REG);
196 static __inline__ void clear_dma_ff(unsigned int dmanr)
198 if (dmanr<=3)
205 static __inline__ void set_dma_mode(unsigned int dmanr, char mode)
207 if (dmanr<=3)
208 dma_outb(mode | dmanr, DMA1_MODE_REG);
210 dma_outb(mode | (dmanr&3), DMA2_MODE_REG);
218 static __inline__ void set_dma_page(unsigned int dmanr, char pagenr)
220 switch(dmanr) {
249 static __inline__ void set_dma_addr(unsigned int dmanr, unsigned int a)
251 set_dma_page(dmanr, a>>16);
252 if (dmanr <= 3) {
253 dma_outb( a & 0xff, ((dmanr&3)<<1) + IO_DMA1_BASE );
254 dma_outb( (a>>8) & 0xff, ((dmanr&3)<<1) + IO_DMA1_BASE );
256 dma_outb( (a>>1) & 0xff, ((dmanr&3)<<2) + IO_DMA2_BASE );
257 dma_outb( (a>>9) & 0xff, ((dmanr&3)<<2) + IO_DMA2_BASE );
270 static __inline__ void set_dma_count(unsigned int dmanr, unsigned int count)
273 if (dmanr <= 3) {
274 dma_outb( count & 0xff, ((dmanr&3)<<1) + 1 + IO_DMA1_BASE );
275 dma_outb( (count>>8) & 0xff, ((dmanr&3)<<1) + 1 + IO_DMA1_BASE );
277 dma_outb( (count>>1) & 0xff, ((dmanr&3)<<2) + 2 + IO_DMA2_BASE );
278 dma_outb( (count>>9) & 0xff, ((dmanr&3)<<2) + 2 + IO_DMA2_BASE );
291 static __inline__ int get_dma_residue(unsigned int dmanr)
293 unsigned int io_port = (dmanr<=3)? ((dmanr&3)<<1) + 1 + IO_DMA1_BASE
294 : ((dmanr&3)<<2) + 2 + IO_DMA2_BASE;
302 return (dmanr<=3)? count : (count<<1);
307 extern int request_dma(unsigned int dmanr, const char * device_id); /* reserve a DMA channel */
308 extern void free_dma(unsigned int dmanr); /* release it again */