pc98/cbus/cbus_dma.c

45  * isa_dmastart()
72 static u_int8_t	dma_busy = 0;		/* Used in isa_dmastart() */
188  * isa_dmastart(): program 8237 DMA controller channel, avoid page alignment
192 isa_dmastart(int flags, caddr_t addr, u_int nbytes, int chan)
205 		panic("isa_dmastart: channel out of range");
209 		panic("isa_dmastart: impossible request");
213 		printf("isa_dmastart: channel %d not acquired\n", chan);
221 	 * isa_dmastart() once because they use Auto DMA mode.  If we
225 		printf("isa_dmastart: channel %d busy\n", chan);
233 			panic("isa_dmastart: bad bounce buffer");