Function pdma_attach

freebsd/mips/ingenic/jz4780_pdma.c:179–219

}

static int
pdma_attach(device_t dev)
{
	struct pdma_softc *sc;
	phandle_t xref, node;
	int err;
	int reg;

	sc = device_get_softc(dev);
	sc->dev = dev;

	if (bus_alloc_resources(dev, pdma_spec, sc->res)) {
		device_printf(dev, "could not allocate resources for device\n");
		return (ENXIO);
	}

	/* Memory interface */
	sc->bst = rman_get_bustag(sc->res[0]);
	sc->bsh = rman_get_bushandle(sc->res[0]);

	/* Setup interrupt handler */
	err = bus_setup_intr(dev, sc->res[1], INTR_TYPE_MISC | INTR_MPSAFE,
	    NULL, pdma_intr, sc, &sc->ih);
	if (err) {
		device_printf(dev, "Unable to alloc interrupt resource.\n");
		return (ENXIO);
	}

	node = ofw_bus_get_node(dev);
	xref = OF_xref_from_node(node);
	OF_device_register_xref(xref, dev);

	reg = READ4(sc, PDMA_DMAC);
	reg &= ~(DMAC_HLT | DMAC_AR);
	reg |= (DMAC_DMAE);
	WRITE4(sc, PDMA_DMAC, reg);

	WRITE4(sc, PDMA_DMACP, 0);

	return (0);
}

static int
pdma_detach(device_t dev)