214 static __inline__ void enable_dma(unsigned int dmanr)  in enable_dma()  argument
216 	if (dmanr<=3)  in enable_dma()
217 		dma_outb(dmanr,  DMA1_MASK_REG);  in enable_dma()
219 		dma_outb(dmanr & 3,  DMA2_MASK_REG);  in enable_dma()
222 static __inline__ void disable_dma(unsigned int dmanr)  in disable_dma()  argument
224 	if (dmanr<=3)  in disable_dma()
225 		dma_outb(dmanr | 4,  DMA1_MASK_REG);  in disable_dma()
227 		dma_outb((dmanr & 3) | 4,  DMA2_MASK_REG);  in disable_dma()
237 static __inline__ void clear_dma_ff(unsigned int dmanr)  in clear_dma_ff()  argument
239 	if (dmanr<=3)  in clear_dma_ff()
246 static __inline__ void set_dma_mode(unsigned int dmanr, char mode)  in set_dma_mode()  argument
248 	if (dmanr<=3)  in set_dma_mode()
249 		dma_outb(mode | dmanr,  DMA1_MODE_REG);  in set_dma_mode()
251 		dma_outb(mode | (dmanr&3),  DMA2_MODE_REG);  in set_dma_mode()
255 static __inline__ void set_dma_ext_mode(unsigned int dmanr, char ext_mode)  in set_dma_ext_mode()  argument
257 	if (dmanr<=3)  in set_dma_ext_mode()
258 		dma_outb(ext_mode | dmanr,  DMA1_EXT_MODE_REG);  in set_dma_ext_mode()
260 		dma_outb(ext_mode | (dmanr&3),  DMA2_EXT_MODE_REG);  in set_dma_ext_mode()
267 static __inline__ void set_dma_page(unsigned int dmanr, unsigned int pagenr)  in set_dma_page()  argument
269 	switch(dmanr) {  in set_dma_page()
305 static __inline__ void set_dma_addr(unsigned int dmanr, unsigned int a)  in set_dma_addr()  argument
307 	if (dmanr <= 3)  {  in set_dma_addr()
308 	    dma_outb( a & 0xff, ((dmanr&3)<<1) + IO_DMA1_BASE );  in set_dma_addr()
309             dma_outb( (a>>8) & 0xff, ((dmanr&3)<<1) + IO_DMA1_BASE );  in set_dma_addr()
311 	    dma_outb( (a>>1) & 0xff, ((dmanr&3)<<2) + IO_DMA2_BASE );  in set_dma_addr()
312 	    dma_outb( (a>>9) & 0xff, ((dmanr&3)<<2) + IO_DMA2_BASE );  in set_dma_addr()
314 	set_dma_page(dmanr, a>>16);	/* set hipage last to enable 32-bit mode */  in set_dma_addr()
326 static __inline__ void set_dma_count(unsigned int dmanr, unsigned int count)  in set_dma_count()  argument
329 	if (dmanr <= 3)  {  in set_dma_count()
330 	    dma_outb( count & 0xff, ((dmanr&3)<<1) + 1 + IO_DMA1_BASE );  in set_dma_count()
331 	    dma_outb( (count>>8) & 0xff, ((dmanr&3)<<1) + 1 + IO_DMA1_BASE );  in set_dma_count()
333 	    dma_outb( (count>>1) & 0xff, ((dmanr&3)<<2) + 2 + IO_DMA2_BASE );  in set_dma_count()
334 	    dma_outb( (count>>9) & 0xff, ((dmanr&3)<<2) + 2 + IO_DMA2_BASE );  in set_dma_count()
347 static __inline__ int get_dma_residue(unsigned int dmanr)  in get_dma_residue()  argument
349 	unsigned int io_port = (dmanr<=3)? ((dmanr&3)<<1) + 1 + IO_DMA1_BASE  in get_dma_residue()
350 					 : ((dmanr&3)<<2) + 2 + IO_DMA2_BASE;  in get_dma_residue()
358 	return (dmanr<=3)? count : (count<<1);  in get_dma_residue()
363 extern int request_dma(unsigned int dmanr, const char * device_id);	/* reserve a DMA channel */
364 extern void free_dma(unsigned int dmanr);	/* release it again */
366 extern int check_dma(unsigned int dmanr);