arc/jazz/asc.c

1 /*	$NetBSD: asc.c,v 1.23 2008/05/14 13:29:27 tsutsui Exp $	*/
28 __KERNEL_RCSID(0, "$NetBSD: asc.c,v 1.23 2008/05/14 13:29:27 tsutsui Exp $");
78 CFATTACH_DECL_NEW(asc, sizeof(struct asc_softc),
125 	struct asc_softc *asc = device_private(self);
126 	struct ncr53c9x_softc *sc = &asc->sc_ncr53c9x;
140 	asc->sc_iot = iot = ja->ja_bust;
141 	asc->sc_dmat = ja->ja_dmat;
143 	if (bus_space_map(iot, ja->ja_addr, ASC_NPORTS, 0, &asc->sc_ioh)) {
149 	    0, &asc->sc_dmaioh)) {
154 	if (bus_dmamap_create(asc->sc_dmat, MAXPHYS, 1, MAXPHYS, 0,
155 	    BUS_DMA_ALLOCNOW | BUS_DMA_NOWAIT, &asc->sc_dmamap)) {
215 	jazzio_intr_establish(ja->ja_intr, ncr53c9x_intr, asc);
229 	bus_space_unmap(iot, asc->sc_dmaioh, R4030_DMA_RANGE);
231 	bus_space_unmap(iot, asc->sc_ioh, ASC_NPORTS);
253 	struct asc_softc *asc = (struct asc_softc *)sc;
255 	return bus_space_read_1(asc->sc_iot, asc->sc_ioh, reg);
261 	struct asc_softc *asc = (struct asc_softc *)sc;
263 	bus_space_write_1(asc->sc_iot, asc->sc_ioh, reg, val);
276 	struct asc_softc *asc = (struct asc_softc *)sc;
279 	bus_space_write_4(asc->sc_iot, asc->sc_dmaioh, R4030_DMA_ENAB, 0);
280 	bus_space_write_4(asc->sc_iot, asc->sc_dmaioh, R4030_DMA_MODE, 0);
286 	struct asc_softc *asc = (struct asc_softc *)sc;
289 	datain = asc->sc_datain;
293 	if (asc->sc_active == 0)
299 	asc->sc_active = 0;
301 	if (asc->sc_dmasize == 0) {
322 		NCR_DMA(("asc_dma_intr: empty asc FIFO of %d ", resid));
335 		if (resid == 0 && asc->sc_dmasize == 65536 &&
342 	bus_space_write_4(asc->sc_iot, asc->sc_dmaioh, R4030_DMA_COUNT, 0);
343 	bus_space_write_4(asc->sc_iot, asc->sc_dmaioh, R4030_DMA_ENAB, 0);
344 	bus_space_write_4(asc->sc_iot, asc->sc_dmaioh, R4030_DMA_MODE, 0);
346 	bus_dmamap_sync(asc->sc_dmat, asc->sc_dmamap,
347 	    0, asc->sc_dmamap->dm_mapsize,
349 	bus_dmamap_unload(asc->sc_dmat, asc->sc_dmamap);
351 	trans = asc->sc_dmasize - resid;
361 		    sc->sc_dev.dv_xname, trans, asc->sc_dmasize);
363 		trans = asc->sc_dmasize;
371 	*asc->sc_dmalen -= trans;
372 	*asc->sc_dmaaddr += trans;
381 	struct asc_softc *asc = (struct asc_softc *)sc;
384 	bus_space_write_4(asc->sc_iot, asc->sc_dmaioh, R4030_DMA_ENAB, 0);
385 	bus_space_write_4(asc->sc_iot, asc->sc_dmaioh, R4030_DMA_MODE, 0);
387 	asc->sc_dmaaddr = addr;
388 	asc->sc_dmalen = len;
389 	asc->sc_dmasize = *dmasize;
390 	asc->sc_datain = datain;
398 	bus_dmamap_load(asc->sc_dmat, asc->sc_dmamap, *addr, *len, NULL,
402 	bus_dmamap_sync(asc->sc_dmat, asc->sc_dmamap,
403 	    0, asc->sc_dmamap->dm_mapsize,
407 	bus_space_write_4(asc->sc_iot, asc->sc_dmaioh,
408 	    R4030_DMA_ADDR, asc->sc_dmamap->dm_segs[0].ds_addr);
409 	bus_space_write_4(asc->sc_iot, asc->sc_dmaioh,
410 	    R4030_DMA_COUNT, asc->sc_dmamap->dm_segs[0].ds_len);
411 	bus_space_write_4(asc->sc_iot, asc->sc_dmaioh,
415 	bus_space_write_4(asc->sc_iot, asc->sc_dmaioh,
417 	    (asc->sc_datain ? R4030_DMA_ENAB_READ : R4030_DMA_ENAB_WRITE));
425 	struct asc_softc *asc = (struct asc_softc *)sc;
428 	if (asc->sc_dmasize == 0)
431 	asc->sc_active = 1;
437 	struct asc_softc *asc = (struct asc_softc *)sc;
440 	bus_space_write_4(asc->sc_iot, asc->sc_dmaioh, R4030_DMA_ENAB, 0);
441 	bus_space_write_4(asc->sc_iot, asc->sc_dmaioh, R4030_DMA_MODE, 0);
443 	bus_dmamap_unload(asc->sc_dmat, asc->sc_dmamap);
445 	asc->sc_active = 0;
451 	struct asc_softc *asc = (struct asc_softc *)sc;
453 	return asc->sc_active;