static int
uhci_pci_attach(device_t self)
{
	uhci_softc_t *sc = device_get_softc(self);
	int rid;
	int err;

	/* initialise some bus fields */
	sc->sc_bus.parent = self;
	sc->sc_bus.devices = sc->sc_devices;
	sc->sc_bus.devices_max = UHCI_MAX_DEVICES;
	sc->sc_bus.dma_bits = 32;

	/* get all DMA memory */
	if (usb_bus_mem_alloc_all(&sc->sc_bus, USB_GET_DMA_TAG(self),
	    &uhci_iterate_hw_softc)) {
		return ENOMEM;
	}
	sc->sc_dev = self;

	pci_enable_busmaster(self);

	rid = PCI_UHCI_BASE_REG;
	sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_IOPORT, &rid,
	    RF_ACTIVE);
	if (!sc->sc_io_res) {
		device_printf(self, "Could not map ports\n");
		goto error;
	}
	sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
	sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
	sc->sc_io_size = rman_get_size(sc->sc_io_res);

	/* disable interrupts */
	bus_space_write_2(sc->sc_io_tag, sc->sc_io_hdl, UHCI_INTR, 0);

	rid = 0;
	sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
	    RF_SHAREABLE | RF_ACTIVE);
	if (sc->sc_irq_res == NULL) {
		device_printf(self, "Could not allocate irq\n");
		goto error;
	}
	sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
	if (!sc->sc_bus.bdev) {
		device_printf(self, "Could not add USB device\n");
		goto error;
	}
	device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);

	/*
	 * uhci_pci_match must never return NULL if uhci_pci_probe
	 * succeeded
	 */
	device_set_desc(sc->sc_bus.bdev, uhci_pci_match(self));
	switch (pci_get_vendor(self)) {
	case PCI_UHCI_VENDORID_INTEL:
		sprintf(sc->sc_vendor, "Intel");
		break;
	case PCI_UHCI_VENDORID_HP:
		sprintf(sc->sc_vendor, "HP");
		break;
	case PCI_UHCI_VENDORID_VIA:
		sprintf(sc->sc_vendor, "VIA");
		break;
	default:
		if (bootverbose) {
			device_printf(self, "(New UHCI DeviceId=0x%08x)\n",
			    pci_get_devid(self));
		}
		sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self));
	}

	switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) {
	case PCI_USB_REV_PRE_1_0:
		sc->sc_bus.usbrev = USB_REV_PRE_1_0;
		break;
	case PCI_USB_REV_1_0:
		sc->sc_bus.usbrev = USB_REV_1_0;
		break;
	default:
		/* Quirk for Parallels Desktop 4.0 */
		device_printf(self, "USB revision is unknown. Assuming v1.1.\n");
		sc->sc_bus.usbrev = USB_REV_1_1;
		break;
	}

#if (__FreeBSD_version >= 700031)
	err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
	    NULL, (driver_intr_t *)uhci_interrupt, sc, &sc->sc_intr_hdl);
#else
	err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
	    (driver_intr_t *)uhci_interrupt, sc, &sc->sc_intr_hdl);
#endif

	if (err) {
		device_printf(self, "Could not setup irq, %d\n", err);
		sc->sc_intr_hdl = NULL;
		goto error;
	}
//.........这里部分代码省略.........

static int
simplebus_attach(device_t dev)
{
	device_t dev_child;
	struct simplebus_devinfo *di;
	struct simplebus_softc *sc;
	phandle_t dt_node, dt_child;

	sc = device_get_softc(dev);

	/*
	 * Walk simple-bus and add direct subordinates as our children.
	 */
	dt_node = ofw_bus_get_node(dev);
	for (dt_child = OF_child(dt_node); dt_child != 0;
	    dt_child = OF_peer(dt_child)) {

		/* Check and process 'status' property. */
		if (!(fdt_is_enabled(dt_child)))
			continue;

		if (!(fdt_pm_is_enabled(dt_child)))
			continue;

		di = malloc(sizeof(*di), M_SIMPLEBUS, M_WAITOK | M_ZERO);

		if (ofw_bus_gen_setup_devinfo(&di->di_ofw, dt_child) != 0) {
			free(di, M_SIMPLEBUS);
			device_printf(dev, "could not set up devinfo\n");
			continue;
		}

		resource_list_init(&di->di_res);
		if (fdt_reg_to_rl(dt_child, &di->di_res)) {
			device_printf(dev,
			    "%s: could not process 'reg' "
			    "property\n", di->di_ofw.obd_name);
			/* XXX should unmap */
			ofw_bus_gen_destroy_devinfo(&di->di_ofw);
			free(di, M_SIMPLEBUS);
			continue;
		}

		if (fdt_intr_to_rl(dt_child, &di->di_res, di->di_intr_sl)) {
			device_printf(dev, "%s: could not process "
			    "'interrupts' property\n", di->di_ofw.obd_name);
			resource_list_free(&di->di_res);
			/* XXX should unmap */
			ofw_bus_gen_destroy_devinfo(&di->di_ofw);
			free(di, M_SIMPLEBUS);
			continue;
		}

		/* Add newbus device for this FDT node */
		dev_child = device_add_child(dev, NULL, -1);
		if (dev_child == NULL) {
			device_printf(dev, "could not add child: %s\n",
			    di->di_ofw.obd_name);
			resource_list_free(&di->di_res);
			/* XXX should unmap */
			ofw_bus_gen_destroy_devinfo(&di->di_ofw);
			free(di, M_SIMPLEBUS);
			continue;
		}
#ifdef DEBUG
		device_printf(dev, "added child: %s\n\n", di->di_ofw.obd_name);
#endif
		device_set_ivars(dev_child, di);
	}

	return (bus_generic_attach(dev));
}

static int
ohci_ec_attach(device_t dev)
{
	struct ec_ohci_softc *sc = device_get_softc(dev);
	bus_space_handle_t bsh;
	int err;
	int rid;

	/* initialise some bus fields */
	sc->sc_ohci.sc_bus.parent = dev;
	sc->sc_ohci.sc_bus.devices = sc->sc_ohci.sc_devices;
	sc->sc_ohci.sc_bus.devices_max = OHCI_MAX_DEVICES;

	/* get all DMA memory */
	if (usb_bus_mem_alloc_all(&sc->sc_ohci.sc_bus,
	    USB_GET_DMA_TAG(dev), &ohci_iterate_hw_softc)) {
		return (ENOMEM);
	}
	sc->sc_ohci.sc_dev = dev;

	rid = MEM_RID;

	sc->sc_ohci.sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
	    &rid, RF_ACTIVE);

	if (!(sc->sc_ohci.sc_io_res)) {
		err = ENOMEM;
		goto error;
	}
	sc->sc_ohci.sc_io_tag = rman_get_bustag(sc->sc_ohci.sc_io_res);
	bsh = rman_get_bushandle(sc->sc_ohci.sc_io_res);
	/* Undocumented magic initialization */
	bus_space_write_4((sc)->sc_ohci.sc_io_tag, bsh,0x04, 0x146);

	bus_space_write_4((sc)->sc_ohci.sc_io_tag, bsh,0x44, 0x0200);

	DELAY(1000);

	sc->sc_ohci.sc_io_size = rman_get_size(sc->sc_ohci.sc_io_res);

	if (bus_space_subregion(sc->sc_ohci.sc_io_tag, bsh, 0x4000000,
	    sc->sc_ohci.sc_io_size, &sc->sc_ohci.sc_io_hdl) != 0)
		panic("%s: unable to subregion USB host registers",
		    device_get_name(dev));

	rid = 0;
	sc->sc_ohci.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
	    RF_ACTIVE);
	if (!(sc->sc_ohci.sc_irq_res)) {
		goto error;
	}
	sc->sc_ohci.sc_bus.bdev = device_add_child(dev, "usbus", -1);
	if (!(sc->sc_ohci.sc_bus.bdev)) {
		goto error;
	}
	device_set_ivars(sc->sc_ohci.sc_bus.bdev, &sc->sc_ohci.sc_bus);

	strlcpy(sc->sc_ohci.sc_vendor, "Cavium",
		sizeof(sc->sc_ohci.sc_vendor));

#if (__FreeBSD_version >= 700031)
	err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res,
	    INTR_TYPE_BIO | INTR_MPSAFE,  NULL,
	    (driver_intr_t *)ohci_interrupt, sc,
	    &sc->sc_ohci.sc_intr_hdl);
#else
	err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res,
	    INTR_TYPE_BIO | INTR_MPSAFE,
	    (driver_intr_t *)ohci_interrupt, sc,
	    &sc->sc_ohci.sc_intr_hdl);
#endif
	if (err) {
		sc->sc_ohci.sc_intr_hdl = NULL;
		goto error;
	}

	bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl,
	    OHCI_CONTROL, 0);

	err = ohci_init(&sc->sc_ohci);
	if (!err) {
		err = device_probe_and_attach(sc->sc_ohci.sc_bus.bdev);
	}
	if (err) {
		goto error;
	}
	return (0);

error:
	ohci_ec_detach(dev);
	return (ENXIO);
}

static int
ofw_iicbus_attach(device_t dev)
{
	struct iicbus_softc *sc = IICBUS_SOFTC(dev);
	struct ofw_iicbus_devinfo *dinfo;
	phandle_t child, node, root;
	pcell_t freq, paddr;
	device_t childdev;
	ssize_t compatlen;
	char compat[255];
	char *curstr;
	u_int iic_addr_8bit = 0;

	sc->dev = dev;
	mtx_init(&sc->lock, "iicbus", NULL, MTX_DEF);

	/*
	 * If there is a clock-frequency property for the device node, use it as
	 * the starting value for the bus frequency.  Then call the common
	 * routine that handles the tunable/sysctl which allows the FDT value to
	 * be overridden by the user.
	 */
	node = ofw_bus_get_node(dev);
	freq = 0;
	OF_getencprop(node, "clock-frequency", &freq, sizeof(freq));
	iicbus_init_frequency(dev, freq);
	
	iicbus_reset(dev, IIC_FASTEST, 0, NULL);

	bus_generic_probe(dev);
	bus_enumerate_hinted_children(dev);

	/*
	 * Check if we're running on a PowerMac, needed for the I2C
	 * address below.
	 */
	root = OF_peer(0);
	compatlen = OF_getprop(root, "compatible", compat,
				sizeof(compat));
	if (compatlen != -1) {
	    for (curstr = compat; curstr < compat + compatlen;
		curstr += strlen(curstr) + 1) {
		if (strncmp(curstr, "MacRISC", 7) == 0)
		    iic_addr_8bit = 1;
	    }
	}

	/*
	 * Attach those children represented in the device tree.
	 */
	for (child = OF_child(node); child != 0; child = OF_peer(child)) {
		/*
		 * Try to get the I2C address first from the i2c-address
		 * property, then try the reg property.  It moves around
		 * on different systems.
		 */
		if (OF_getencprop(child, "i2c-address", &paddr,
		    sizeof(paddr)) == -1)
			if (OF_getencprop(child, "reg", &paddr,
			    sizeof(paddr)) == -1)
				continue;

		/*
		 * Now set up the I2C and OFW bus layer devinfo and add it
		 * to the bus.
		 */
		dinfo = malloc(sizeof(struct ofw_iicbus_devinfo), M_DEVBUF,
		    M_NOWAIT | M_ZERO);
		if (dinfo == NULL)
			continue;
		/*
		 * FreeBSD drivers expect I2C addresses to be expressed as
		 * 8-bit values.  Apple OFW data contains 8-bit values, but
		 * Linux FDT data contains 7-bit values, so shift them up to
		 * 8-bit format.
		 */
		if (iic_addr_8bit)
		    dinfo->opd_dinfo.addr = paddr;
		else
		    dinfo->opd_dinfo.addr = paddr << 1;

		if (ofw_bus_gen_setup_devinfo(&dinfo->opd_obdinfo, child) !=
		    0) {
			free(dinfo, M_DEVBUF);
			continue;
		}

		childdev = device_add_child(dev, NULL, -1);
		resource_list_init(&dinfo->opd_dinfo.rl);
		ofw_bus_intr_to_rl(childdev, child,
					&dinfo->opd_dinfo.rl, NULL);
		device_set_ivars(childdev, dinfo);
	}

	/* Register bus */
	OF_device_register_xref(OF_xref_from_node(node), dev);
	return (bus_generic_attach(dev));
}

static int
ehci_ps3_attach(device_t dev)
{
	ehci_softc_t *sc = device_get_softc(dev);
	int rid, err;

	sc->sc_bus.parent = dev;
	sc->sc_bus.devices = sc->sc_devices;
	sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
	sc->sc_bus.dma_bits = 32;

	/* get all DMA memory */
	if (usb_bus_mem_alloc_all(&sc->sc_bus,
	    USB_GET_DMA_TAG(dev), &ehci_iterate_hw_softc))
		return (ENOMEM);

	rid = 1;
	sc->sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
	    &rid, RF_ACTIVE);

	if (!sc->sc_io_res) {
		device_printf(dev, "Could not map memory\n");
		goto error;
	}

	sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
	sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
	sc->sc_io_size = rman_get_size(sc->sc_io_res);

	rid = 1;
	sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
	    RF_SHAREABLE | RF_ACTIVE);

	if (sc->sc_irq_res == NULL) {
		device_printf(dev, "Could not allocate irq\n");
		return (ENXIO);
	}

	sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
	if (!sc->sc_bus.bdev) {
		device_printf(dev, "Could not add USB device\n");
		return (ENXIO);
	}

	device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);

	sprintf(sc->sc_vendor, "Sony");

	err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
	    NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
	if (err) {
		device_printf(dev, "Could not setup error irq, %d\n", err);
		goto error;
	}

	sc->sc_vendor_post_reset = ehci_ps3_post_reset;
	err = ehci_init(sc);
	if (err) {
		device_printf(dev, "USB init failed err=%d\n", err);
		goto error;
	}

	err = device_probe_and_attach(sc->sc_bus.bdev);
	if (err == 0)
		return (0);

error:
	return (ENXIO);
}

static int
ar71xx_ohci_attach(device_t dev)
{
	struct ar71xx_ohci_softc *sc = device_get_softc(dev);
	int err;
	int rid;

	/* initialise some bus fields */
	sc->sc_ohci.sc_bus.parent = dev;
	sc->sc_ohci.sc_bus.devices = sc->sc_ohci.sc_devices;
	sc->sc_ohci.sc_bus.devices_max = OHCI_MAX_DEVICES;
	sc->sc_ohci.sc_bus.dma_bits = 32;

	/* get all DMA memory */
	if (usb_bus_mem_alloc_all(&sc->sc_ohci.sc_bus,
	    USB_GET_DMA_TAG(dev), &ohci_iterate_hw_softc)) {
		return (ENOMEM);
	}

	sc->sc_ohci.sc_dev = dev;

	rid = 0;
	sc->sc_ohci.sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
	    RF_ACTIVE);
	if (sc->sc_ohci.sc_io_res == NULL) {
		err = ENOMEM;
		goto error;
	}
	sc->sc_ohci.sc_io_tag = rman_get_bustag(sc->sc_ohci.sc_io_res);
	sc->sc_ohci.sc_io_hdl = rman_get_bushandle(sc->sc_ohci.sc_io_res);
	sc->sc_ohci.sc_io_size = rman_get_size(sc->sc_ohci.sc_io_res);

	rid = 0;
	sc->sc_ohci.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
	    RF_ACTIVE);
	if (sc->sc_ohci.sc_irq_res == NULL) {
		err = ENOMEM;
		goto error;
	}
	sc->sc_ohci.sc_bus.bdev = device_add_child(dev, "usbus", -1);
	if (sc->sc_ohci.sc_bus.bdev == NULL) {
		err = ENOMEM;
		goto error;
	}
	device_set_ivars(sc->sc_ohci.sc_bus.bdev, &sc->sc_ohci.sc_bus);

	err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res, 
	    INTR_TYPE_BIO | INTR_MPSAFE, NULL, 
	    ar71xx_ohci_intr, sc, &sc->sc_ohci.sc_intr_hdl);
	if (err) {
		err = ENXIO;
		goto error;
	}

	strlcpy(sc->sc_ohci.sc_vendor, "Atheros", sizeof(sc->sc_ohci.sc_vendor));

	bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl, OHCI_CONTROL, 0);

	err = ohci_init(&sc->sc_ohci);
	if (!err)
		err = device_probe_and_attach(sc->sc_ohci.sc_bus.bdev);

	if (err)
		goto error;
	return (0);

error:
	if (err) {
		ar71xx_ohci_detach(dev);
		return (err);
	}
	return (err);
}

static int
ata_cbus_attach(device_t dev)
{
    struct ata_cbus_controller *ctlr = device_get_softc(dev);
    device_t child;
    int rid, unit;

    /* allocate resources */
    rid = ATA_IOADDR_RID;
    if (!(ctlr->io = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT, &rid,
						 ATA_PC98_IOSIZE, RF_ACTIVE)))
       return ENOMEM;

    rid = ATA_PC98_CTLADDR_RID;
    if (!(ctlr->ctlio = 
	  bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
			     rman_get_start(ctlr->io) + ATA_PC98_CTLOFFSET, ~0,
			     ATA_CTLIOSIZE, RF_ACTIVE))) {
	bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
	return ENOMEM;
    }

    rid = ATA_PC98_BANKADDR_RID;
    if (!(ctlr->bankio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
					    ATA_PC98_BANK, ~0,
					    ATA_PC98_BANKIOSIZE, RF_ACTIVE))) {
	bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
	bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio);
	return ENOMEM;
    }

    rid = ATA_IRQ_RID;
    if (!(ctlr->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
					     RF_ACTIVE | RF_SHAREABLE))) {
	device_printf(dev, "unable to alloc interrupt\n");
	bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
	bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio);
	bus_release_resource(dev, SYS_RES_IOPORT, 
			     ATA_PC98_BANKADDR_RID, ctlr->bankio);
	return ENXIO;
    }

    if ((bus_setup_intr(dev, ctlr->irq, ATA_INTR_FLAGS,
			NULL, ata_cbus_intr, ctlr, &ctlr->ih))) {
	device_printf(dev, "unable to setup interrupt\n");
	bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
	bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio);
	bus_release_resource(dev, SYS_RES_IOPORT, 
			     ATA_PC98_BANKADDR_RID, ctlr->bankio);
	bus_release_resource(dev, SYS_RES_IOPORT, ATA_IRQ_RID, ctlr->irq);
	return ENXIO;
    }

	/* Work around the lack of channel serialization in ATA_CAM. */
	ctlr->channels = 1;
	device_printf(dev, "second channel ignored\n");

    for (unit = 0; unit < ctlr->channels; unit++) {
	child = device_add_child(dev, "ata", unit);
	if (child == NULL)
	    device_printf(dev, "failed to add ata child device\n");
	else
	    device_set_ivars(child, (void *)(intptr_t)unit);
    }

    bus_generic_attach(dev);
    return (0);
}

//.........这里部分代码省略.........
	port_wr(res, 5, 0);
	DELAY(30 * 1000);

	port_wr(res, 3, 0x4c);
	port_wr(res, 5, 1);
	DELAY(30 * 1000);

	s = splhigh();

	/* Write to DRAM.  */

	port_wr(res, 3, 0x43);		/* Register select */
	port_wr(res, 4, 0);		/* Low addr */
	port_wr(res, 5, 0);		/* Med addr */

	port_wr(res, 3, 0x44);		/* Register select */
	port_wr(res, 4, 0);		/* High addr */
	port_wr(res, 7, 0x55);		/* DRAM */

	/* Read from DRAM.  */

	port_wr(res, 3, 0x43);		/* Register select */
	port_wr(res, 4, 0);		/* Low addr */
	port_wr(res, 5, 0);		/* Med addr */

	port_wr(res, 3, 0x44);		/* Register select */
	port_wr(res, 4, 0);		/* High addr */
	val = port_rd(res, 7);		/* DRAM */

	splx(s);

	if (val != 0x55)
		goto fail;

	rid2 = 0;
	res2 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid2, base, base, 1,
				  RF_ACTIVE);

	if (res2 == NULL)
		goto fail;

	s = splhigh();
	port_wr(res2, 0x0f, 0x20);
	val = port_rd(res2, 0x0f);
	splx(s);

	if (val == 0xff || (val & 0x06) == 0)
		val = 0;
	else {
		val = port_rd(res2, 0x506);	/* XXX Out of range.  */
		if (val == 0xff)
			val = 0;
	}

	bus_release_resource(dev, SYS_RES_IOPORT, rid2, res2);
	bus_release_resource(dev, SYS_RES_IOPORT, rid, res);

	if (val >= 10) {
		struct sndcard_func *func;

		/* Looks like a GUS MAX.  Set the rest of the resources.  */

		bus_set_resource(dev, SYS_RES_IOPORT, 2, base + 0x10c, 8);

		if (flags & DV_F_DUAL_DMA)
			bus_set_resource(dev, SYS_RES_DRQ, 1,
					 flags & DV_F_DRQ_MASK, 1);

		/* We can support the CS4231 and MIDI devices.  */

		func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
		if (func == NULL)
			return ENOMEM;
		func->func = SCF_MIDI;
		child = device_add_child(dev, "midi", -1);
		device_set_ivars(child, func);

		func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
		if (func == NULL)
			printf("xxx: gus pcm not attached, out of memory\n");
		else {
			func->func = SCF_PCM;
			child = device_add_child(dev, "pcm", -1);
			device_set_ivars(child, func);
		}
		device_set_desc(dev, "Gravis UltraSound MAX");
		return 0;
	} else {

		/*
		 * TODO: Support even older GUS cards.  MIDI should work on
		 * all models.
		 */
		return ENXIO;
	}

fail:
	bus_release_resource(dev, SYS_RES_IOPORT, rid, res);
	return ENXIO;
}

//.........这里部分代码省略.........
	if (sc->mem_res_ipfs == NULL) {
		device_printf(dev,
		    "Could not allocate IPFS memory resources\n");
		rv = ENXIO;
		goto error;
	}

	rid = 0;
	xsc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
	    RF_ACTIVE);
	if (xsc->sc_irq_res == NULL) {
		device_printf(dev, "Could not allocate HCD IRQ resources\n");
		rv = ENXIO;
		goto error;
	}
	rid = 1;
	sc->irq_res_mbox = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
	    RF_ACTIVE);
	if (sc->irq_res_mbox == NULL) {
		device_printf(dev, "Could not allocate MBOX IRQ resources\n");
		rv = ENXIO;
		goto error;
	}

	rv = init_hw(sc);
	if (rv != 0) {
		device_printf(dev, "Could not initialize  XUSB hardware\n");
		goto error;
	}

	/* Wakeup and enable firmaware */
	rv = mbox_send_cmd(sc, MBOX_CMD_MSG_ENABLED, 0);
	if (rv != 0) {
		device_printf(sc->dev, "Could not enable XUSB firmware\n");
		goto error;
	}

	/* Fill data for XHCI driver. */
	xsc->sc_bus.parent = dev;
	xsc->sc_bus.devices = xsc->sc_devices;
	xsc->sc_bus.devices_max = XHCI_MAX_DEVICES;

	xsc->sc_io_tag = rman_get_bustag(xsc->sc_io_res);
	xsc->sc_io_hdl = rman_get_bushandle(xsc->sc_io_res);
	xsc->sc_io_size = rman_get_size(xsc->sc_io_res);
	strlcpy(xsc->sc_vendor, "Nvidia", sizeof(xsc->sc_vendor));

	/* Add USB bus device. */
	xsc->sc_bus.bdev = device_add_child(sc->dev, "usbus", -1);
	if (xsc->sc_bus.bdev == NULL) {
		device_printf(sc->dev, "Could not add USB device\n");
		rv = ENXIO;
		goto error;
	}
	device_set_ivars(xsc->sc_bus.bdev, &xsc->sc_bus);
	device_set_desc(xsc->sc_bus.bdev, "Nvidia USB 3.0 controller");

	rv = xhci_init(xsc, sc->dev, 1);
	if (rv != 0) {
		device_printf(sc->dev, "USB init failed: %d\n", rv);
		goto error;
	}
	sc->xhci_inited = true;
	rv = xhci_start_controller(xsc);
	if (rv != 0) {
		device_printf(sc->dev,
		    "Could not start XHCI controller: %d\n", rv);
		goto error;
	}

	rv = bus_setup_intr(dev, sc->irq_res_mbox, INTR_TYPE_MISC | INTR_MPSAFE,
	    NULL, intr_mbox, sc, &sc->irq_hdl_mbox);
	if (rv != 0) {
		device_printf(dev, "Could not setup error IRQ: %d\n",rv);
		xsc->sc_intr_hdl = NULL;
		goto error;
	}

	rv = bus_setup_intr(dev, xsc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
	    NULL, (driver_intr_t *)xhci_interrupt, xsc, &xsc->sc_intr_hdl);
	if (rv != 0) {
		device_printf(dev, "Could not setup error IRQ: %d\n",rv);
		xsc->sc_intr_hdl = NULL;
		goto error;
	}

	/* Probe the bus. */
	rv = device_probe_and_attach(xsc->sc_bus.bdev);
	if (rv != 0) {
		device_printf(sc->dev, "Could not initialize USB: %d\n", rv);
		goto error;
	}

	return (0);

error:
panic("XXXXX");
	tegra_xhci_detach(dev);
	return (rv);
}

static int
mv_pcib_ofw_bus_attach(device_t dev)
{
	struct mv_pcib_ctrl_devinfo *di;
	struct mv_pcib_ctrl_softc *sc;
	device_t child;
	phandle_t parent, node;
	get_rl_t get_rl;

	parent = ofw_bus_get_node(dev);
	sc = device_get_softc(dev);
	if (parent > 0) {
		sc->addr_cells = 1;
		if (OF_getencprop(parent, "#address-cells", &(sc->addr_cells),
		    sizeof(sc->addr_cells)) <= 0)
			return(ENXIO);

		sc->size_cells = 1;
		if (OF_getencprop(parent, "#size-cells", &(sc->size_cells),
		    sizeof(sc->size_cells)) <= 0)
			return(ENXIO);

		for (node = OF_child(parent); node > 0; node = OF_peer(node)) {
			di = malloc(sizeof(*di), M_PCIB_CTRL, M_WAITOK | M_ZERO);
			if (ofw_bus_gen_setup_devinfo(&di->di_dinfo, node)) {
				if (bootverbose) {
					device_printf(dev,
					    "Could not set up devinfo for PCI\n");
				}
				free(di, M_PCIB_CTRL);
				continue;
			}

			child = device_add_child(dev, NULL, -1);
			if (child == NULL) {
				if (bootverbose) {
					device_printf(dev,
					    "Could not add child: %s\n",
					    di->di_dinfo.obd_name);
				}
				ofw_bus_gen_destroy_devinfo(&di->di_dinfo);
				free(di, M_PCIB_CTRL);
				continue;
			}

			resource_list_init(&di->di_rl);
			get_rl = (get_rl_t) ofw_bus_search_compatible(dev,
			    mv_pcib_ctrl_compat)->ocd_data;
			if (get_rl != NULL)
				get_rl(child, node, sc->addr_cells,
				    sc->size_cells, &di->di_rl);

			device_set_ivars(child, di);
		}
	}

	if (mv_pcib_ctrl_fill_ranges(parent, sc) < 0) {
		device_printf(dev, "could not get ranges\n");
		return (ENXIO);
	}

	return (0);
}

static int
iobus_attach(device_t dev)
{
	struct iobus_softc *sc;
        struct iobus_devinfo *dinfo;
        phandle_t  root;
        phandle_t  child;
        device_t   cdev;
        char *name;
	u_int reg[2];
	int size;

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

	/*
	 * Find the base addr/size of the iobus, and initialize the
	 * resource manager
	 */
	size = OF_getprop(sc->sc_node, "reg", reg, sizeof(reg));
	if (size == sizeof(reg)) {
		sc->sc_addr = reg[0];
		sc->sc_size = reg[1];
	} else {
		return (ENXIO);
	}

	sc->sc_mem_rman.rm_type = RMAN_ARRAY;
        sc->sc_mem_rman.rm_descr = "IOBus Device Memory";
        if (rman_init(&sc->sc_mem_rman) != 0) {
		device_printf(dev,
                    "failed to init mem range resources\n");
                return (ENXIO);
	}
	rman_manage_region(&sc->sc_mem_rman, 0, sc->sc_size);

        /*
         * Iterate through the sub-devices
         */
        root = sc->sc_node;

        for (child = OF_child(root); child != 0; child = OF_peer(child)) {
                OF_getprop_alloc(child, "name", 1, (void **)&name);

                cdev = device_add_child(dev, NULL, -1);
                if (cdev != NULL) {
                        dinfo = malloc(sizeof(*dinfo), M_IOBUS, M_WAITOK);
			memset(dinfo, 0, sizeof(*dinfo));
			resource_list_init(&dinfo->id_resources);
                        dinfo->id_node = child;
                        dinfo->id_name = name;
			iobus_add_intr(child, dinfo);
			iobus_add_reg(child, dinfo, sc->sc_addr);
                        device_set_ivars(cdev, dinfo);
                } else {
                        free(name, M_OFWPROP);
                }
        }

        return (bus_generic_attach(dev));
}

static int
ehci_xls_attach(device_t self)
{
	ehci_softc_t *sc = device_get_softc(self);
	int err;
	int rid;

	sc->sc_bus.parent = self;
	sc->sc_bus.devices = sc->sc_devices;
	sc->sc_bus.devices_max = EHCI_MAX_DEVICES;

	/* get all DMA memory */
	if (usb_bus_mem_alloc_all(&sc->sc_bus,
	    USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
		return (ENOMEM);
	}

	rid = 0;
	sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
	    RF_ACTIVE);
	if (!sc->sc_io_res) {
		device_printf(self, "Could not map memory\n");
		goto error;
	}
	sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
	sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
	printf("IO Resource tag %lx, hdl %lx, size %lx\n",
	       (u_long)sc->sc_io_tag, (u_long)sc->sc_io_hdl, 
	       (u_long)sc->sc_io_size);

	rid = 0;
	sc->sc_irq_res = bus_alloc_resource(self, SYS_RES_IRQ, &rid,
	    PIC_USB_IRQ, PIC_USB_IRQ, 1, RF_SHAREABLE | RF_ACTIVE);
	if (sc->sc_irq_res == NULL) {
		device_printf(self, "Could not allocate irq\n");
		goto error;
	}

	sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
	if (!sc->sc_bus.bdev) {
		device_printf(self, "Could not add USB device\n");
		goto error;
	}
	device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
	device_set_desc(sc->sc_bus.bdev, xlr_usb_dev_desc);

	sprintf(sc->sc_vendor, xlr_vendor_desc);

	err = bus_setup_intr(self, sc->sc_irq_res,
	    INTR_TYPE_BIO | INTR_MPSAFE, NULL,
	    (driver_intr_t *) ehci_interrupt, sc, &sc->sc_intr_hdl);
	if (err) {
		device_printf(self, "Could not setup irq, %d\n", err);
		sc->sc_intr_hdl = NULL;
		goto error;
	}

	err = ehci_init(sc);
	if (err) {
		device_printf(self, "USB init failed err=%d\n", err);
		goto error;
	}

	err = device_probe_and_attach(sc->sc_bus.bdev);
	if (err) {
		device_printf(self, "USB probe and attach failed err=%d\n", err);
		goto error;
	}

	return (0);

error:
	ehci_xls_detach(self);
	return (ENXIO);
}

//.........这里部分代码省略.........
	phandle_t child, node;
	int error, i;

	dsc = device_get_softc(dev);
	lsc = &dsc->sc_lsi64854;

	name = ofw_bus_get_name(dev);
	node = ofw_bus_get_node(dev);
	dsc->sc_ign = sbus_get_ign(dev);
	dsc->sc_slot = sbus_get_slot(dev);

	i = 0;
	lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i,
	    RF_ACTIVE);
	if (lsc->sc_res == NULL) {
		device_printf(dev, "cannot allocate resources\n");
		return (ENXIO);
	}

	if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0)
		lsc->sc_channel = L64854_CHANNEL_SCSI;
	else if (strcmp(name, "ledma") == 0) {
		/*
		 * Check to see which cable type is currently active and
		 * set the appropriate bit in the ledma csr so that it
		 * gets used. If we didn't netboot, the PROM won't have
		 * the "cable-selection" property; default to TP and then
		 * the user can change it via a "media" option to ifconfig.
		 */
		csr = L64854_GCSR(lsc);
		if ((OF_getprop_alloc(node, "cable-selection", 1,
		    (void **)&cabletype)) == -1) {
			/* assume TP if nothing there */
			csr |= E_TP_AUI;
		} else {
			if (strcmp(cabletype, "aui") == 0)
				csr &= ~E_TP_AUI;
			else
				csr |= E_TP_AUI;
			free(cabletype, M_OFWPROP);
		}
		L64854_SCSR(lsc, csr);
		DELAY(20000);	/* manual says we need a 20ms delay */
		lsc->sc_channel = L64854_CHANNEL_ENET;
	} else {
		device_printf(dev, "unsupported DMA channel\n");
		error = ENXIO;
		goto fail_lres;
	}

	error = bus_dma_tag_create(
	    bus_get_dma_tag(dev),	/* parent */
	    1, 0,			/* alignment, boundary */
	    BUS_SPACE_MAXADDR,		/* lowaddr */
	    BUS_SPACE_MAXADDR,		/* highaddr */
	    NULL, NULL,			/* filter, filterarg */
	    BUS_SPACE_MAXSIZE_32BIT,	/* maxsize */
	    0,				/* nsegments */
	    BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
	    0,				/* flags */
	    NULL, NULL,			/* no locking */
	    &lsc->sc_parent_dmat);
	if (error != 0) {
		device_printf(dev, "cannot allocate parent DMA tag\n");
		goto fail_lres;
	}

	i = sbus_get_burstsz(dev);
	lsc->sc_burst = (i & SBUS_BURST_32) ? 32 :
	    (i & SBUS_BURST_16) ? 16 : 0;
	lsc->sc_dev = dev;

	/* Attach children. */
	i = 0;
	for (child = OF_child(node); child != 0; child = OF_peer(child)) {
		if ((ddi = dma_setup_dinfo(dev, dsc, child)) == NULL)
			continue;
		if (i != 0) {
			device_printf(dev,
			    "<%s>: only one child per DMA channel supported\n",
			    ddi->ddi_obdinfo.obd_name);
			dma_destroy_dinfo(ddi);
			continue;
		}
		if ((cdev = device_add_child(dev, NULL, -1)) == NULL) {
			device_printf(dev, "<%s>: device_add_child failed\n",
			    ddi->ddi_obdinfo.obd_name);
			dma_destroy_dinfo(ddi);
			continue;
		}
		device_set_ivars(cdev, ddi);
		i++;
	}
	return (bus_generic_attach(dev));

 fail_lres:
	bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lsc->sc_res),
	    lsc->sc_res);
	return (error);
}

static int
at91_udp_attach(device_t dev)
{
	struct at91_udp_softc *sc = device_get_softc(dev);
	int err;
	int rid;

	/* setup AT9100 USB device controller interface softc */

	sc->sc_dci.sc_clocks_on = &at91_udp_clocks_on;
	sc->sc_dci.sc_clocks_off = &at91_udp_clocks_off;
	sc->sc_dci.sc_clocks_arg = sc;
	sc->sc_dci.sc_pull_up = &at91_udp_pull_up;
	sc->sc_dci.sc_pull_down = &at91_udp_pull_down;
	sc->sc_dci.sc_pull_arg = sc;

	/* initialise some bus fields */
	sc->sc_dci.sc_bus.parent = dev;
	sc->sc_dci.sc_bus.devices = sc->sc_dci.sc_devices;
	sc->sc_dci.sc_bus.devices_max = AT91_MAX_DEVICES;

	/* get all DMA memory */
	if (usb_bus_mem_alloc_all(&sc->sc_dci.sc_bus,
	    USB_GET_DMA_TAG(dev), NULL)) {
		return (ENOMEM);
	}
	callout_init_mtx(&sc->sc_vbus, &sc->sc_dci.sc_bus.bus_mtx, 0);

	/*
	 * configure VBUS input pin, enable deglitch and enable
	 * interrupt :
	 */
	at91_pio_use_gpio(VBUS_BASE, VBUS_MASK);
	at91_pio_gpio_input(VBUS_BASE, VBUS_MASK);
	at91_pio_gpio_set_deglitch(VBUS_BASE, VBUS_MASK, 1);
	at91_pio_gpio_set_interrupt(VBUS_BASE, VBUS_MASK, 0);

	/*
	 * configure PULLUP output pin :
	 */
	at91_pio_use_gpio(PULLUP_BASE, PULLUP_MASK);
	at91_pio_gpio_output(PULLUP_BASE, PULLUP_MASK, 0);

	at91_udp_pull_down(sc);

	/* wait 10ms for pulldown to stabilise */
	usb_pause_mtx(NULL, hz / 100);

	sc->sc_mclk = at91_pmc_clock_ref("mck");
	sc->sc_iclk = at91_pmc_clock_ref("udc_clk");
	sc->sc_fclk = at91_pmc_clock_ref("udpck");

	rid = MEM_RID;
	sc->sc_dci.sc_io_res =
	    bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);

	if (!(sc->sc_dci.sc_io_res)) {
		err = ENOMEM;
		goto error;
	}
	sc->sc_dci.sc_io_tag = rman_get_bustag(sc->sc_dci.sc_io_res);
	sc->sc_dci.sc_io_hdl = rman_get_bushandle(sc->sc_dci.sc_io_res);
	sc->sc_dci.sc_io_size = rman_get_size(sc->sc_dci.sc_io_res);

	rid = 0;
	sc->sc_dci.sc_irq_res =
	    bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
	if (!(sc->sc_dci.sc_irq_res)) {
		goto error;
	}
	sc->sc_dci.sc_bus.bdev = device_add_child(dev, "usbus", -1);
	if (!(sc->sc_dci.sc_bus.bdev)) {
		goto error;
	}
	device_set_ivars(sc->sc_dci.sc_bus.bdev, &sc->sc_dci.sc_bus);

	err = bus_setup_intr(dev, sc->sc_dci.sc_irq_res, INTR_TYPE_TTY | INTR_MPSAFE,
	    at91dci_filter_interrupt, at91dci_interrupt, sc, &sc->sc_dci.sc_intr_hdl);
	if (err) {
		sc->sc_dci.sc_intr_hdl = NULL;
		goto error;
	}

	err = at91dci_init(&sc->sc_dci);
	if (!err) {
		err = device_probe_and_attach(sc->sc_dci.sc_bus.bdev);
	}
	if (err) {
		goto error;
	} else {
		/* poll VBUS one time */
		USB_BUS_LOCK(&sc->sc_dci.sc_bus);
		at91_vbus_poll(sc);
		USB_BUS_UNLOCK(&sc->sc_dci.sc_bus);
	}
	return (0);

error:
	at91_udp_detach(dev);
	return (ENXIO);
//.........这里部分代码省略.........

static int
ehci_obio_attach(device_t self)
{
	ehci_softc_t *sc = device_get_softc(self);
	uint32_t reg;
	int err;
	int rid;

	/* setup controller interface softc */
	reg = rt305x_sysctl_get(SYSCTL_SYSCFG1);
	reg |= SYSCTL_SYSCFG1_USB0_HOST_MODE;
	rt305x_sysctl_set(SYSCTL_SYSCFG1, reg);

	reg = rt305x_sysctl_get(SYSCTL_CLKCFG1);
	reg |= SYSCTL_CLKCFG1_UPHY0_CLK_EN;
#ifdef MT7620
	reg |= SYSCTL_CLKCFG1_UPHY1_CLK_EN;
#endif
	rt305x_sysctl_set(SYSCTL_CLKCFG1, reg);

	reg = rt305x_sysctl_get(SYSCTL_RSTCTRL);
	reg |= SYSCTL_RSTCTRL_UPHY0 | SYSCTL_RSTCTRL_UPHY1;
	rt305x_sysctl_set(SYSCTL_RSTCTRL, reg);
	reg &= ~(SYSCTL_RSTCTRL_UPHY0 | SYSCTL_RSTCTRL_UPHY1);
	DELAY(100000);
	rt305x_sysctl_set(SYSCTL_RSTCTRL, reg);
	DELAY(100000);

	/* initialise some bus fields */
	sc->sc_bus.parent = self;
	sc->sc_bus.devices = sc->sc_devices;
	sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
	sc->sc_bus.dma_bits = 32;

	/* get all DMA memory */
	if (usb_bus_mem_alloc_all(&sc->sc_bus,
	    USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
		printf("No mem\n");
		return (ENOMEM);
	}

	rid = 0;
	sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
				RF_ACTIVE);
	if (!sc->sc_io_res) {
		device_printf(self, "Could not map memory\n");
		goto error;
	}
	sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
	sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
	sc->sc_io_size = rman_get_size(sc->sc_io_res);

	rid = 0;
	sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
		RF_SHAREABLE | RF_ACTIVE);
	if (sc->sc_irq_res == NULL) {
		device_printf(self, "Could not allocate irq\n");
		goto error;
	}

	sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
	if (!(sc->sc_bus.bdev)) {
		device_printf(self, "Could not add USB device\n");
		goto error;
	}
	device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
	device_set_desc(sc->sc_bus.bdev, EHCI_HC_DEVSTR);

	sprintf(sc->sc_vendor, "Ralink");

	err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
		NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
	if (err) {
		device_printf(self, "Could not setup irq, %d\n", err);
		sc->sc_intr_hdl = NULL;
		goto error;
	}

	err = ehci_init(sc);
	if (!err) {
		err = device_probe_and_attach(sc->sc_bus.bdev);
	}
	if (err) {
		device_printf(self, "USB init failed err=%d\n", err);
		goto error;
	}
	return (0);

error:
	ehci_obio_detach(self);
	return (ENXIO);
}

static device_t
newbus_pci_create(device_t dev_par, phandle_t dt_node, u_long par_base,
    u_long par_size)
{
	pcell_t reg[3 + 2];
	device_t dev_child;
	u_long start, end, count;
	struct fdtbus_devinfo *di;
	char *name, *type, *compat;
	int len;

	OF_getprop_alloc(dt_node, "device_type", 1, (void **)&type);
	if (!(type != NULL && strcmp(type, "pci") == 0)) {
		/* Only process 'pci' subnodes. */
		free(type, M_OFWPROP);
		return (NULL);
	}

	OF_getprop_alloc(dt_node, "name", 1, (void **)&name);
	OF_getprop_alloc(OF_parent(dt_node), "compatible", 1,
	    (void **)&compat);

	dev_child = device_add_child(dev_par, NULL, -1);
	if (dev_child == NULL) {
		free(name, M_OFWPROP);
		free(type, M_OFWPROP);
		free(compat, M_OFWPROP);
		return (NULL);
	}

	di = malloc(sizeof(*di), M_FDTBUS, M_WAITOK);
	di->di_node = dt_node;
	di->di_name = name;
	di->di_type = type;
	di->di_compat = compat;

	resource_list_init(&di->di_res);

	/*
	 * Produce and set SYS_RES_MEMORY resources.
	 */
	start = 0;
	count = 0;

	len = OF_getprop(dt_node, "reg", &reg, sizeof(reg));
	if (len > 0) {
		if (fdt_data_verify((void *)&reg[1], 2) != 0) {
			device_printf(dev_child, "'reg' address value out of "
			    "range\n");
			newbus_device_destroy(dev_child);
			dev_child = NULL;
			goto out;
		}
		start = fdt_data_get((void *)&reg[1], 2);

		if (fdt_data_verify((void *)&reg[3], 2) != 0) {
			device_printf(dev_child, "'reg' size value out of "
			    "range\n");
			newbus_device_destroy(dev_child);
			dev_child = NULL;
			goto out;
		}
		count = fdt_data_get((void *)&reg[3], 2);
	}

	/* Calculate address range relative to base. */
	par_base &= 0x000ffffful;
	start &= 0x000ffffful;
	start += par_base + fdt_immr_va;
	if (count == 0)
		count = par_size;
	end = start + count - 1;

	debugf("start = 0x%08lx, end = 0x%08lx, count = 0x%08lx\n",
	    start, end, count);

	if (count > par_size) {
		device_printf(dev_child, "'reg' size value out of range\n");
		newbus_device_destroy(dev_child);
		dev_child = NULL;
		goto out;
	}

	resource_list_add(&di->di_res, SYS_RES_MEMORY, 0, start, end, count);

	/*
	 * Set SYS_RES_IRQ resources.
	 */
	if (fdt_intr_to_rl(OF_parent(dt_node), &di->di_res, di->di_intr_sl)) {
		device_printf(dev_child, "could not process 'interrupts' "
		    "property\n");
		newbus_device_destroy(dev_child);
		dev_child = NULL;
		goto out;
	}

	device_set_ivars(dev_child, di);
	debugf("added child name='%s', node=%p\n", name,
	    (void *)dt_node);

//.........这里部分代码省略.........

int
iodi_attach(device_t dev)
{
	device_t tmpd;
	int i;

	/*
	 * Attach each devices
	 */
	device_add_child(dev, "uart", 0);
	device_add_child(dev, "xlr_i2c", 0);
	device_add_child(dev, "xlr_i2c", 1);
	device_add_child(dev, "pcib", 0);
	device_add_child(dev, "rmisec", -1);

	if (xlr_board_info.usb)
		device_add_child(dev, "ehci", 0);

	if (xlr_board_info.cfi)
		device_add_child(dev, "cfi", 0);

	if (xlr_board_info.ata)
		device_add_child(dev, "ata", 0);

	if (xlr_board_info.gmac_block[0].enabled) {
		tmpd = device_add_child(dev, "rge", 0);
		device_set_ivars(tmpd, &xlr_board_info.gmac_block[0]);

		tmpd = device_add_child(dev, "rge", 1);
		device_set_ivars(tmpd, &xlr_board_info.gmac_block[0]);

		tmpd = device_add_child(dev, "rge", 2);
		device_set_ivars(tmpd, &xlr_board_info.gmac_block[0]);

		tmpd = device_add_child(dev, "rge", 3);
		device_set_ivars(tmpd, &xlr_board_info.gmac_block[0]);
	}
	if (xlr_board_info.gmac_block[1].enabled) {
		if (xlr_board_info.gmac_block[1].type == XLR_GMAC) {
			tmpd = device_add_child(dev, "rge", 4);
			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);

			tmpd = device_add_child(dev, "rge", 5);
			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);

			if (xlr_board_info.gmac_block[1].enabled & 0x4) {
				tmpd = device_add_child(dev, "rge", 6);
				device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);
			}

			if (xlr_board_info.gmac_block[1].enabled & 0x8) {
				tmpd = device_add_child(dev, "rge", 7);
				device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);
			}
		} else if (xlr_board_info.gmac_block[1].type == XLR_XGMAC) {
#if 0				/* XGMAC not yet */
			tmpd = device_add_child(dev, "rge", 4);
			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);

			tmpd = device_add_child(dev, "rge", 5);
			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);
#endif