Lines Matching refs:dmanr
152 static __inline__ void enable_dma(unsigned int dmanr)
154 if (dmanr<=3)
155 dma_outb(dmanr, DMA1_MASK_REG);
157 dma_outb(dmanr & 3, DMA2_MASK_REG);
160 static __inline__ void disable_dma(unsigned int dmanr)
162 if (dmanr<=3)
163 dma_outb(dmanr | 4, DMA1_MASK_REG);
165 dma_outb((dmanr & 3) | 4, DMA2_MASK_REG);
175 static __inline__ void clear_dma_ff(unsigned int dmanr)
177 if (dmanr<=3)
184 static __inline__ void set_dma_mode(unsigned int dmanr, char mode)
186 if (dmanr<=3)
187 dma_outb(mode | dmanr, DMA1_MODE_REG);
189 dma_outb(mode | (dmanr&3), DMA2_MODE_REG);
197 static __inline__ void set_dma_page(unsigned int dmanr, unsigned int pagenr)
199 switch(dmanr) {
235 static __inline__ void set_dma_addr(unsigned int dmanr, unsigned int a)
237 set_dma_page(dmanr, a>>16);
238 if (dmanr <= 3) {
239 dma_outb( a & 0xff, ((dmanr&3)<<1) + IO_DMA1_BASE );
240 dma_outb( (a>>8) & 0xff, ((dmanr&3)<<1) + IO_DMA1_BASE );
242 dma_outb( (a>>1) & 0xff, ((dmanr&3)<<2) + IO_DMA2_BASE );
243 dma_outb( (a>>9) & 0xff, ((dmanr&3)<<2) + IO_DMA2_BASE );
256 static __inline__ void set_dma_count(unsigned int dmanr, unsigned int count)
259 if (dmanr <= 3) {
260 dma_outb( count & 0xff, ((dmanr&3)<<1) + 1 + IO_DMA1_BASE );
261 dma_outb( (count>>8) & 0xff, ((dmanr&3)<<1) + 1 + IO_DMA1_BASE );
263 dma_outb( (count>>1) & 0xff, ((dmanr&3)<<2) + 2 + IO_DMA2_BASE );
264 dma_outb( (count>>9) & 0xff, ((dmanr&3)<<2) + 2 + IO_DMA2_BASE );
277 static __inline__ int get_dma_residue(unsigned int dmanr)
279 unsigned int io_port = (dmanr<=3)? ((dmanr&3)<<1) + 1 + IO_DMA1_BASE
280 : ((dmanr&3)<<2) + 2 + IO_DMA2_BASE;
287 return (dmanr<=3)? count : (count<<1);
292 extern int request_dma(unsigned int dmanr, const char * device_id); /* reserve a DMA channel */
293 extern void free_dma(unsigned int dmanr); /* release it again */