Lines Matching refs:nbytes

289 isa_dmastart(isadev, chan, addr, nbytes, p, flags, busdmaflags)  in isa_dmastart()  argument
293 	bus_size_t nbytes;
318 	    chan, addr, nbytes, p, flags, busdmaflags);
322 		if (nbytes > (1 << 17) || nbytes & 1 || (u_long)addr & 1) {
324 			    sc->sc_dev.dv_xname, chan, nbytes, addr);
328 		if (nbytes > (1 << 16)) {
330 			    sc->sc_dev.dv_xname, chan, nbytes);
345 	error = bus_dmamap_load(sc->sc_dmat, dmam, addr, nbytes, p,
374 	sc->sc_dmalength[chan] = nbytes;
395 		    (--nbytes) & 0xff);
397 		    (nbytes >> 8) & 0xff);
414 		nbytes >>= 1;
416 		    (--nbytes) & 0xff);
418 		    (nbytes >> 8) & 0xff);
452 	bus_size_t nbytes;  local
472 		nbytes = bus_space_read_1(sc->sc_iot, sc->sc_dma1h,
474 		nbytes += bus_space_read_1(sc->sc_iot, sc->sc_dma1h,
476 		nbytes &= 0xffff;
479 		nbytes = bus_space_read_1(sc->sc_iot, sc->sc_dma2h,
481 		nbytes += bus_space_read_1(sc->sc_iot, sc->sc_dma2h,
483 		nbytes <<= 1;
484 		nbytes &= 0x1ffff;
487 	if (nbytes == sc->sc_dmalength[chan])
488 		nbytes = 0;
491 	return (nbytes);