207 static __inline__ void enable_dma(unsigned int dmanr)  in enable_dma()  argument
209 	if (dmanr<=3)  in enable_dma()
210 		dma_outb(dmanr,  DMA1_MASK_REG);  in enable_dma()
212 		dma_outb(dmanr & 3,  DMA2_MASK_REG);  in enable_dma()
215 static __inline__ void disable_dma(unsigned int dmanr)  in disable_dma()  argument
217 	if (dmanr<=3)  in disable_dma()
218 		dma_outb(dmanr | 4,  DMA1_MASK_REG);  in disable_dma()
220 		dma_outb((dmanr & 3) | 4,  DMA2_MASK_REG);  in disable_dma()
230 static __inline__ void clear_dma_ff(unsigned int dmanr)  in clear_dma_ff()  argument
232 	if (dmanr<=3)  in clear_dma_ff()
239 static __inline__ void set_dma_mode(unsigned int dmanr, char mode)  in set_dma_mode()  argument
241 	if (dmanr<=3)  in set_dma_mode()
242 		dma_outb(mode | dmanr,  DMA1_MODE_REG);  in set_dma_mode()
244 		dma_outb(mode | (dmanr&3),  DMA2_MODE_REG);  in set_dma_mode()
248 static __inline__ void set_dma_ext_mode(unsigned int dmanr, char ext_mode)  in set_dma_ext_mode()  argument
250 	if (dmanr<=3)  in set_dma_ext_mode()
251 		dma_outb(ext_mode | dmanr,  DMA1_EXT_MODE_REG);  in set_dma_ext_mode()
253 		dma_outb(ext_mode | (dmanr&3),  DMA2_EXT_MODE_REG);  in set_dma_ext_mode()
260 static __inline__ void set_dma_page(unsigned int dmanr, unsigned int pagenr)  in set_dma_page()  argument
262 	switch(dmanr) {  in set_dma_page()
298 static __inline__ void set_dma_addr(unsigned int dmanr, unsigned int a)  in set_dma_addr()  argument
300 	if (dmanr <= 3)  {  in set_dma_addr()
301 	    dma_outb( a & 0xff, ((dmanr&3)<<1) + IO_DMA1_BASE );  in set_dma_addr()
302             dma_outb( (a>>8) & 0xff, ((dmanr&3)<<1) + IO_DMA1_BASE );  in set_dma_addr()
304 	    dma_outb( (a>>1) & 0xff, ((dmanr&3)<<2) + IO_DMA2_BASE );  in set_dma_addr()
305 	    dma_outb( (a>>9) & 0xff, ((dmanr&3)<<2) + IO_DMA2_BASE );  in set_dma_addr()
307 	set_dma_page(dmanr, a>>16);	/* set hipage last to enable 32-bit mode */  in set_dma_addr()
319 static __inline__ void set_dma_count(unsigned int dmanr, unsigned int count)  in set_dma_count()  argument
322 	if (dmanr <= 3)  {  in set_dma_count()
323 	    dma_outb( count & 0xff, ((dmanr&3)<<1) + 1 + IO_DMA1_BASE );  in set_dma_count()
324 	    dma_outb( (count>>8) & 0xff, ((dmanr&3)<<1) + 1 + IO_DMA1_BASE );  in set_dma_count()
326 	    dma_outb( (count>>1) & 0xff, ((dmanr&3)<<2) + 2 + IO_DMA2_BASE );  in set_dma_count()
327 	    dma_outb( (count>>9) & 0xff, ((dmanr&3)<<2) + 2 + IO_DMA2_BASE );  in set_dma_count()
340 static __inline__ int get_dma_residue(unsigned int dmanr)  in get_dma_residue()  argument
342 	unsigned int io_port = (dmanr<=3)? ((dmanr&3)<<1) + 1 + IO_DMA1_BASE  in get_dma_residue()
343 					 : ((dmanr&3)<<2) + 2 + IO_DMA2_BASE;  in get_dma_residue()
351 	return (dmanr<=3)? count : (count<<1);  in get_dma_residue()
356 extern int request_dma(unsigned int dmanr, const char * device_id);	/* reserve a DMA channel */
357 extern void free_dma(unsigned int dmanr);	/* release it again */
359 extern int check_dma(unsigned int dmanr);