static int
ehci_ixp_attach(device_t self)
{
	struct ixp_ehci_softc *isc = device_get_softc(self);
	ehci_softc_t *sc = &isc->base;
	int err;
	int rid;

	/* 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)) {
		return (ENOMEM);
	}

	/* NB: hints fix the memory location and irq */

	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;
	}

	/*
	 * Craft special resource for bus space ops that handle
	 * byte-alignment of non-word addresses.  Also, since
	 * we're already intercepting bus space ops we handle
	 * the register window offset that could otherwise be
	 * done with bus_space_subregion.
	 */
	isc->iot = rman_get_bustag(sc->sc_io_res);
	isc->tag.bs_privdata = isc->iot;
	/* read single */
	isc->tag.bs_r_1	= ehci_bs_r_1,
	isc->tag.bs_r_2	= ehci_bs_r_2,
	isc->tag.bs_r_4	= ehci_bs_r_4,
	/* write (single) */
	isc->tag.bs_w_1	= ehci_bs_w_1,
	isc->tag.bs_w_2	= ehci_bs_w_2,
	isc->tag.bs_w_4	= ehci_bs_w_4,

	sc->sc_io_tag = &isc->tag;
	sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
	sc->sc_io_size = IXP435_USB1_SIZE - 0x100;

	rid = 0;
	sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
	    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, "Intel");


	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;
	}

	/*
	 * Select big-endian byte alignment and arrange to not terminate
	 * reset operations (the adapter will ignore it if we do but might
	 * as well save a reg write). Also, the controller has an embedded
	 * Transaction Translator which means port speed must be read from
	 * the Port Status register following a port enable.
	 */
	sc->sc_flags |= EHCI_SCFLG_TT
		     | EHCI_SCFLG_BIGEDESC
		     | EHCI_SCFLG_NORESTERM
		     ;

	/* Setup callbacks. */
	sc->sc_vendor_post_reset = ehci_ixp_post_reset;
	sc->sc_vendor_get_port_speed = ehci_get_port_speed_portsc;

	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;
//.........这里部分代码省略.........

int
smc_probe(device_t dev)
{
	int			rid, type, error;
	uint16_t		val;
	struct smc_softc	*sc;
	struct resource		*reg;

	sc = device_get_softc(dev);
	rid = 0;
	type = SYS_RES_IOPORT;
	error = 0;

	if (sc->smc_usemem)
		type = SYS_RES_MEMORY;

	reg = bus_alloc_resource(dev, type, &rid, 0, ~0, 16, RF_ACTIVE);
	if (reg == NULL) {
		if (bootverbose)
			device_printf(dev,
			    "could not allocate I/O resource for probe\n");
		return (ENXIO);
	}

	/* Check for the identification value in the BSR. */
	val = bus_read_2(reg, BSR);
	if ((val & BSR_IDENTIFY_MASK) != BSR_IDENTIFY) {
		if (bootverbose)
			device_printf(dev, "identification value not in BSR\n");
		error = ENXIO;
		goto done;
	}

	/*
	 * Try switching banks and make sure we still get the identification
	 * value.
	 */
	bus_write_2(reg, BSR, 0);
	val = bus_read_2(reg, BSR);
	if ((val & BSR_IDENTIFY_MASK) != BSR_IDENTIFY) {
		if (bootverbose)
			device_printf(dev,
			    "identification value not in BSR after write\n");
		error = ENXIO;
		goto done;
	}

#if 0
	/* Check the BAR. */
	bus_write_2(reg, BSR, 1);
	val = bus_read_2(reg, BAR);
	val = BAR_ADDRESS(val);
	if (rman_get_start(reg) != val) {
		if (bootverbose)
			device_printf(dev, "BAR address %x does not match "
			    "I/O resource address %lx\n", val,
			    rman_get_start(reg));
		error = ENXIO;
		goto done;
	}
#endif

	/* Compare REV against known chip revisions. */
	bus_write_2(reg, BSR, 3);
	val = bus_read_2(reg, REV);
	val = (val & REV_CHIP_MASK) >> REV_CHIP_SHIFT;
	if (smc_chip_ids[val] == NULL) {
		if (bootverbose)
			device_printf(dev, "Unknown chip revision: %d\n", val);
		error = ENXIO;
		goto done;
	}

	device_set_desc(dev, smc_chip_ids[val]);

done:
	bus_release_resource(dev, type, rid, reg);
	return (error);
}

static int
max6657_probe(device_t dev)
{
	device_set_desc(dev, "MAX6657MSA Temperature Sensor");
	return (0);
}

static int
ohci_ec_probe(device_t dev)
{
	device_set_desc(dev, "Econa integrated OHCI controller");
	return (BUS_PROBE_DEFAULT);
}

static int
ar71xx_ehci_attach(device_t self)
{
	struct ar71xx_ehci_softc *isc = device_get_softc(self);
	ehci_softc_t *sc = &isc->base;
	int err;
	int rid;

	/* 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)) {
		return (ENOMEM);
	}

	sc->sc_bus.usbrev = USB_REV_2_0;

	/* NB: hints fix the memory location and irq */

	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;
	}

	/*
	 * Craft special resource for bus space ops that handle
	 * byte-alignment of non-word addresses.  
	 */
	sc->sc_io_tag = ar71xx_bus_space_reversed;
	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_ACTIVE | RF_SHAREABLE);
	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, "Atheros");

	err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
	    NULL, ar71xx_ehci_intr, sc, &sc->sc_intr_hdl);
	if (err) {
		device_printf(self, "Could not setup irq, %d\n", err);
		sc->sc_intr_hdl = NULL;
		goto error;
	}

	/*
	 * Arrange to force Host mode, select big-endian byte alignment,
	 * and arrange to not terminate reset operations (the adapter
	 * will ignore it if we do but might as well save a reg write).
	 * Also, the controller has an embedded Transaction Translator
	 * which means port speed must be read from the Port Status
	 * register following a port enable.
	 */
	sc->sc_flags = 0;
	sc->sc_vendor_post_reset = ar71xx_ehci_post_reset;

	switch (ar71xx_soc) {
		case AR71XX_SOC_AR7241:
		case AR71XX_SOC_AR7242:
		case AR71XX_SOC_AR9130:
		case AR71XX_SOC_AR9132:
		case AR71XX_SOC_AR9330:
		case AR71XX_SOC_AR9331:
		case AR71XX_SOC_AR9341:
		case AR71XX_SOC_AR9342:
		case AR71XX_SOC_AR9344:
		case AR71XX_SOC_QCA9533:
		case AR71XX_SOC_QCA9533_V2:
		case AR71XX_SOC_QCA9556:
		case AR71XX_SOC_QCA9558:
			sc->sc_flags |= EHCI_SCFLG_TT | EHCI_SCFLG_NORESTERM;
			sc->sc_vendor_get_port_speed =
			    ehci_get_port_speed_portsc;
			break;
		default:
			/* fallthrough */
			break;
	}

	/*
	 * ehci_reset() needs the correct offset to access the host controller
//.........这里部分代码省略.........

static int
cryptocteon_probe(device_t dev)
{
	device_set_desc(dev, "Octeon Secure Coprocessor");
	return (0);
}

int
iq80321_probe(device_t dev)
{
	device_set_desc(dev, "Intel 80321");
	return (BUS_PROBE_NOWILDCARD);
}

static int
rp_probe(device_t dev)
{
	int unit;
	CONTROLLER_t *controller;
	int num_aiops;
	CONTROLLER_t *ctlp;
	int retval;

	/*
	 * We have no PnP RocketPort cards.
	 * (At least according to LINT)
	 */
	if (isa_get_logicalid(dev) != 0)
		return (ENXIO);

	/* We need IO port resource to configure an ISA device. */
	if (bus_get_resource_count(dev, SYS_RES_IOPORT, 0) == 0)
		return (ENXIO);

	unit = device_get_unit(dev);
	if (unit >= 4) {
		device_printf(dev, "rpprobe: unit number %d invalid.\n", unit);
		return (ENXIO);
	}
	device_printf(dev, "probing for RocketPort(ISA) unit %d.\n", unit);

	ctlp = device_get_softc(dev);
	bzero(ctlp, sizeof(*ctlp));
	ctlp->dev = dev;
	ctlp->aiop2rid = rp_isa_aiop2rid;
	ctlp->aiop2off = rp_isa_aiop2off;
	ctlp->ctlmask = rp_isa_ctlmask;

	/* The IO ports of AIOPs for an ISA controller are discrete. */
	ctlp->io_num = 1;
	ctlp->io_rid = malloc(sizeof(*(ctlp->io_rid)) * MAX_AIOPS_PER_BOARD, M_DEVBUF, M_NOWAIT | M_ZERO);
	ctlp->io = malloc(sizeof(*(ctlp->io)) * MAX_AIOPS_PER_BOARD, M_DEVBUF, M_NOWAIT | M_ZERO);
	if (ctlp->io_rid == NULL || ctlp->io == NULL) {
		device_printf(dev, "rp_attach: Out of memory.\n");
		retval = ENOMEM;
		goto nogo;
	}

	ctlp->bus_ctlp = malloc(sizeof(ISACONTROLLER_t) * 1, M_DEVBUF, M_NOWAIT | M_ZERO);
	if (ctlp->bus_ctlp == NULL) {
		device_printf(dev, "rp_attach: Out of memory.\n");
		retval = ENOMEM;
		goto nogo;
	}

	ctlp->io_rid[0] = 0;
	if (rp_controller != NULL) {
		controller = rp_controller;
		ctlp->io[0] = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT, &ctlp->io_rid[0], 0x40, RF_ACTIVE);
	} else {
		controller = rp_controller = ctlp;
		ctlp->io[0] = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT, &ctlp->io_rid[0], 0x44, RF_ACTIVE);
	}
	if (ctlp->io[0] == NULL) {
		device_printf(dev, "rp_attach: Resource not available.\n");
		retval = ENXIO;
		goto nogo;
	}

	num_aiops = sInitController(ctlp,
				controller,
				MAX_AIOPS_PER_BOARD, 0,
				FREQ_DIS, 0);
	if (num_aiops <= 0) {
		device_printf(dev, "board%d init failed.\n", unit);
		retval = ENXIO;
		goto nogo;
	}

	if (rp_controller == NULL)
		rp_controller = controller;
	rp_nisadevs++;

	device_set_desc(dev, "RocketPort ISA");

	return (0);

nogo:
	rp_isareleaseresource(ctlp);

	return (retval);
}

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

	/* initialise some bus fields */
	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);
	}

	pci_enable_busmaster(self);

	switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) {
	case PCI_USB_REV_PRE_1_0:
	case PCI_USB_REV_1_0:
	case PCI_USB_REV_1_1:
		/*
		 * NOTE: some EHCI USB controllers have the wrong USB
		 * revision number. It appears those controllers are
		 * fully compliant so we just ignore this value in
		 * some common cases.
		 */
		device_printf(self, "pre-2.0 USB revision (ignored)\n");
		/* fallthrough */
	case PCI_USB_REV_2_0:
		break;
	default:
		/* Quirk for Parallels Desktop 4.0 */
		device_printf(self, "USB revision is unknown. Assuming v2.0.\n");
		break;
	}

	rid = PCI_CBMEM;
	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);

	/*
	 * ehci_pci_match will never return NULL if ehci_pci_probe
	 * succeeded
	 */
	device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self));
	switch (pci_get_vendor(self)) {
	case PCI_EHCI_VENDORID_ACERLABS:
		sprintf(sc->sc_vendor, "AcerLabs");
		break;
	case PCI_EHCI_VENDORID_AMD:
		sprintf(sc->sc_vendor, "AMD");
		break;
	case PCI_EHCI_VENDORID_APPLE:
		sprintf(sc->sc_vendor, "Apple");
		break;
	case PCI_EHCI_VENDORID_ATI:
		sprintf(sc->sc_vendor, "ATI");
		break;
	case PCI_EHCI_VENDORID_CMDTECH:
		sprintf(sc->sc_vendor, "CMDTECH");
		break;
	case PCI_EHCI_VENDORID_INTEL:
		sprintf(sc->sc_vendor, "Intel");
		break;
	case PCI_EHCI_VENDORID_NEC:
		sprintf(sc->sc_vendor, "NEC");
		break;
	case PCI_EHCI_VENDORID_OPTI:
		sprintf(sc->sc_vendor, "OPTi");
		break;
	case PCI_EHCI_VENDORID_PHILIPS:
		sprintf(sc->sc_vendor, "Philips");
		break;
	case PCI_EHCI_VENDORID_SIS:
		sprintf(sc->sc_vendor, "SiS");
//.........这里部分代码省略.........

static int
gt_probe(device_t dev)
{
	device_set_desc(dev, "GT64120 chip");
	return (0);
}

static int
mpt_pci_probe(device_t dev)
{
	const char *desc;
	int rval;

	if (pci_get_vendor(dev) != MPI_MANUFACTPAGE_VENDORID_LSILOGIC)
		return (ENXIO);

	rval = BUS_PROBE_DEFAULT;
	switch (pci_get_device(dev)) {
	case MPI_MANUFACTPAGE_DEVICEID_FC909_FB:
		desc = "LSILogic FC909 FC Adapter";
		break;
	case MPI_MANUFACTPAGE_DEVICEID_FC909:
		desc = "LSILogic FC909A FC Adapter";
		break;
	case MPI_MANUFACTPAGE_DEVICEID_FC919:
		desc = "LSILogic FC919 FC Adapter";
		break;
	case MPI_MANUFACTPAGE_DEVICEID_FC919_LAN_FB:
		desc = "LSILogic FC919 LAN Adapter";
		break;
	case MPI_MANUFACTPAGE_DEVICEID_FC929:
		desc = "Dual LSILogic FC929 FC Adapter";
		break;
	case MPI_MANUFACTPAGE_DEVICEID_FC929_LAN_FB:
		desc = "Dual LSILogic FC929 LAN Adapter";
		break;
	case MPI_MANUFACTPAGE_DEVICEID_FC919X:
		desc = "LSILogic FC919 FC PCI-X Adapter";
		break;
	case MPI_MANUFACTPAGE_DEVICEID_FC919X_LAN_FB:
		desc = "LSILogic FC919 LAN PCI-X Adapter";
		break;
	case MPI_MANUFACTPAGE_DEVICEID_FC929X:
		desc = "Dual LSILogic FC929X 2Gb/s FC PCI-X Adapter";
		break;
	case MPI_MANUFACTPAGE_DEVICEID_FC929X_LAN_FB:
		desc = "Dual LSILogic FC929X LAN PCI-X Adapter";
		break;
	case MPI_MANUFACTPAGE_DEVICEID_FC949E:
		desc = "Dual LSILogic FC7X04X 4Gb/s FC PCI-Express Adapter";
		break;
	case MPI_MANUFACTPAGE_DEVICEID_FC949X:
		desc = "Dual LSILogic FC7X04X 4Gb/s FC PCI-X Adapter";
		break;
	case MPI_MANUFACTPAGE_DEVID_53C1030:
	case MPI_MANUFACTPAGE_DEVID_53C1030ZC:
		desc = "LSILogic 1030 Ultra4 Adapter";
		break;
	case MPI_MANUFACTPAGE_DEVID_SAS1068E_FB:
		/*
		 * Allow mfi(4) to claim this device in case it's in MegaRAID
		 * mode.
		 */
		rval = BUS_PROBE_LOW_PRIORITY;
		/* FALLTHROUGH */
	case MPI_MANUFACTPAGE_DEVID_SAS1064:
	case MPI_MANUFACTPAGE_DEVID_SAS1064A:
	case MPI_MANUFACTPAGE_DEVID_SAS1064E:
	case MPI_MANUFACTPAGE_DEVID_SAS1066:
	case MPI_MANUFACTPAGE_DEVID_SAS1066E:
	case MPI_MANUFACTPAGE_DEVID_SAS1068:
	case MPI_MANUFACTPAGE_DEVID_SAS1068A_FB:
	case MPI_MANUFACTPAGE_DEVID_SAS1068E:
	case MPI_MANUFACTPAGE_DEVID_SAS1078:
	case MPI_MANUFACTPAGE_DEVID_SAS1078DE_FB:
		desc = "LSILogic SAS/SATA Adapter";
		break;
	default:
		return (ENXIO);
	}

	device_set_desc(dev, desc);
	return (rval);
}

static int
xhci_attach(device_t dev)
{
	struct xhci_softc *sc = device_get_softc(dev);
	int err = 0, rid = 0;

	sc->sc_bus.parent = dev;
	sc->sc_bus.devices = sc->sc_devices;
	sc->sc_bus.devices_max = XHCI_MAX_DEVICES;

	sc->sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
	    RF_ACTIVE);
	if (sc->sc_io_res == NULL) {
		device_printf(dev, "Failed to map memory\n");
		xhci_detach(dev);
		return (ENXIO);
	}

	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);

	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, "Failed to allocate IRQ\n");
		xhci_detach(dev);
		return (ENXIO);
	}

	sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
	if (sc->sc_bus.bdev == NULL) {
		device_printf(dev, "Failed to add USB device\n");
		xhci_detach(dev);
		return (ENXIO);
	}

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

	sprintf(sc->sc_vendor, XHCI_HC_VENDOR);
	device_set_desc(sc->sc_bus.bdev, XHCI_HC_DEVSTR);

	err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
	    NULL, (driver_intr_t *)xhci_interrupt, sc, &sc->sc_intr_hdl);
	if (err != 0) {
		device_printf(dev, "Failed to setup error IRQ, %d\n", err);
		sc->sc_intr_hdl = NULL;
		xhci_detach(dev);
		return (err);
	}

	err = xhci_init(sc, dev, IS_DMA_32B);
	if (err != 0) {
		device_printf(dev, "Failed to init XHCI, with error %d\n", err);
		xhci_detach(dev);
		return (ENXIO);
	}

	err = xhci_start_controller(sc);
	if (err != 0) {
		device_printf(dev, "Failed to start XHCI controller, with error %d\n", err);
		xhci_detach(dev);
		return (ENXIO);
	}

	err = device_probe_and_attach(sc->sc_bus.bdev);
	if (err != 0) {
		device_printf(dev, "Failed to initialize USB, with error %d\n", err);
		xhci_detach(dev);
		return (ENXIO);
	}

	return (0);
}

static int
dotg_obio_probe(device_t dev)
{
	device_set_desc(dev, "DWC like USB OTG controller");
	return (0);
}

static int
ahc_isa_probe(device_t dev)
{
	struct	  aic7770_identity *entry;
	bus_space_tag_t	    tag;
	bus_space_handle_t  bsh;
	struct	  resource *regs;
	struct	  resource *irq;
	uint32_t  iobase;
	u_int	  intdef;
	u_int	  hcntrl;
	int	  irq_num;
	int	  error;
	int	  zero;

	error = ENXIO;
	zero = 0;
	regs = NULL;
	irq = NULL;

	/* Skip probes for ISA PnP devices */
	if (isa_get_logicalid(dev) != 0)
		return (error);

	regs = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &zero, RF_ACTIVE);
	if (regs == NULL) {
		device_printf(dev, "No resources allocated.\n");
		return (ENOMEM);
	}

	iobase = rman_get_start(regs);
	tag = rman_get_bustag(regs);
	bsh = rman_get_bushandle(regs);

	entry = ahc_isa_find_device(tag, bsh);
	if (entry == NULL)
		goto cleanup;

	/* Pause the card preseving the IRQ type */
	hcntrl = bus_space_read_1(tag, bsh, HCNTRL) & IRQMS;
	bus_space_write_1(tag, bsh, HCNTRL, hcntrl | PAUSE);
	while ((bus_space_read_1(tag, bsh, HCNTRL) & PAUSE) == 0)
		;

	/* Make sure we have a valid interrupt vector */
	intdef = bus_space_read_1(tag, bsh, INTDEF);
	irq_num = intdef & VECTOR;
	switch (irq_num) {
	case 9: 
	case 10:
	case 11:
	case 12:
	case 14:
	case 15:
		break;
	default:
		device_printf(dev, "@0x%x: illegal irq setting %d\n",
			      iobase, irq_num);
		goto cleanup;
	}

	if (bus_set_resource(dev, SYS_RES_IRQ, zero, irq_num, 1) != 0)
		goto cleanup;

	/*
	 * The 284X only supports edge triggered interrupts,
	 * so do not claim RF_SHAREABLE.
	 */
	irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero,
				     0 /*!(RF_ACTIVE|RF_SHAREABLE)*/);
	if (irq != NULL) {
		error = 0;
		device_set_desc(dev, entry->name);
	} else 
		device_printf(dev, "@0x%x: irq %d allocation failed\n",
			      iobase, irq_num);

cleanup:
	if (regs != NULL) {
		bus_release_resource(dev, SYS_RES_IOPORT, zero, regs);
		regs = NULL;
	}

	if (irq != NULL) {
		bus_release_resource(dev, SYS_RES_IRQ, zero, irq);
		irq = NULL;
	}

	return (error);
}

static int
ep_eisa_probe(device_t dev)
{
	const char *desc;
	u_long iobase;
	u_short conf;
	u_long port;
	int irq;
	int int_trig;

	desc = ep_match(eisa_get_id(dev));
	if (!desc)
		return (ENXIO);
	device_set_desc(dev, desc);

	port = (eisa_get_slot(dev) * EISA_SLOT_SIZE);
	iobase = port + EP_EISA_SLOT_OFFSET;

	/* We must be in EISA configuration mode */
	if ((inw(iobase + EP_W0_ADDRESS_CFG) & 0x1f) != 0x1f)
		return (ENXIO);

	eisa_add_iospace(dev, iobase, EP_EISA_IOSIZE, RESVADDR_NONE);
	eisa_add_iospace(dev, port, EP_IOSIZE, RESVADDR_NONE);

	conf = inw(iobase + EISA_IOCONF);
	/* Determine our IRQ */
	switch (conf & IRQ_CHANNEL) {
	case INT_3:
		irq = 3;
		break;
	case INT_5:
		irq = 5;
		break;
	case INT_7:
		irq = 7;
		break;
	case INT_9:
		irq = 9;
		break;
	case INT_10:
		irq = 10;
		break;
	case INT_11:
		irq = 11;
		break;
	case INT_12:
		irq = 12;
		break;
	case INT_15:
		irq = 15;
		break;
	default:
		/* Disabled */
		printf("ep: 3COM Network Adapter at "
		    "slot %d has its IRQ disabled. "
		    "Probe failed.\n",
		    eisa_get_slot(dev));
		return (ENXIO);
	}

	switch (eisa_get_id(dev)) {
	case EISA_DEVICE_ID_3COM_3C579_BNC:
	case EISA_DEVICE_ID_3COM_3C579_TP:
		int_trig = EISA_TRIGGER_LEVEL;
		break;
	default:
		int_trig = EISA_TRIGGER_EDGE;
		break;
	}

	eisa_add_intr(dev, irq, int_trig);

	return (0);
}

static int
ixpclk_probe(device_t dev)
{
	device_set_desc(dev, "IXP4XX Timer");
	return (0);
}

static int
iavc_isa_probe(device_t dev)
{
	struct iavc_softc *sc;
	int ret = ENXIO;
	int unit = device_get_unit(dev);
	
	if(isa_get_vendorid(dev))	/* no PnP probes here */
		return ENXIO;

	/* check max unit range */
	
	if (unit >= IAVC_MAXUNIT)
	{
		kprintf("iavc%d: too many units\n", unit);
		return(ENXIO);	
	}

	sc = iavc_find_sc(unit);	/* get softc */	
	
	sc->sc_unit = unit;

	if (!(sc->sc_resources.io_base[0] =
		bus_alloc_resource(dev, SYS_RES_IOPORT,
			&sc->sc_resources.io_rid[0],
			0UL, ~0UL, B1_IOLENGTH, RF_ACTIVE)))
	{
		kprintf("iavc%d: can't allocate io region\n", unit);
		return(ENXIO);                                       
	}

	sc->sc_iobase = rman_get_start(sc->sc_resources.io_base[0]);

	switch(sc->sc_iobase)
	{
		case 0x150:
		case 0x250:
		case 0x300:
		case 0x340:
			break;
		default:
			kprintf("iavc%d: ERROR, invalid i/o base addr 0x%x configured!\n", sc->sc_unit, sc->sc_iobase);
			bus_release_resource(dev, SYS_RES_IOPORT,
					sc->sc_resources.io_rid[0],
		                        sc->sc_resources.io_base[0]);
		return(ENXIO);
	}	
	
	sc->sc_io_bt = rman_get_bustag(sc->sc_resources.io_base[0]);
	sc->sc_io_bh = rman_get_bushandle(sc->sc_resources.io_base[0]);

	/* setup characteristics */

	sc->sc_t1 = FALSE;
	sc->sc_dma = FALSE;

	sc->sc_capi.card_type = CARD_TYPEC_AVM_B1_ISA;
	sc->sc_capi.sc_nbch = 2;

	b1_reset(sc);
	DELAY(100);

	ret = b1_detect(sc);

	if(ret)
	{
		kprintf("iavc%d: no card ? b1_detect returns %0x02x\n", sc->sc_unit, ret);
		return(ENXIO);
	}

	DELAY(100);

	b1_reset(sc);
	
	DELAY(100);

	if(bootverbose)
	{
		kprintf("iavc%d: class = 0x%02x, rev = 0x%02x\n", sc->sc_unit,
			iavc_read_port(sc, B1_ANALYSE),
			iavc_read_port(sc, B1_REVISION));
	}

	device_set_desc(dev, "AVM B1 ISA");
	return(0);
}

static int
at91_ssc_probe(device_t dev)
{
	device_set_desc(dev, "SSC");
	return (0);
}

static int
gpioc_probe(device_t dev)
{
	device_set_desc(dev, "GPIO controller");
	return (0);
}

static int
atkbdc_isa_probe(device_t dev)
{
	struct resource	*port0;
	struct resource	*port1;
	u_long		start;
	u_long		count;
	int		error;
	int		rid;
#if defined(__i386__) || defined(__amd64__)
	bus_space_tag_t	tag;
	bus_space_handle_t ioh1;
	volatile int	i;
	register_t	flags;
#endif

	/* check PnP IDs */
	if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO)
		return ENXIO;

	device_set_desc(dev, "Keyboard controller (i8042)");

	/*
	 * Adjust I/O port resources.
	 * The AT keyboard controller uses two ports (a command/data port
	 * 0x60 and a status port 0x64), which may be given to us in 
	 * one resource (0x60 through 0x64) or as two separate resources
	 * (0x60 and 0x64). Some brain-damaged ACPI BIOS has reversed
	 * command/data port and status port. Furthermore, /boot/device.hints
	 * may contain just one port, 0x60. We shall adjust resource settings
	 * so that these two ports are available as two separate resources
	 * in correct order.
	 */
	device_quiet(dev);
	rid = 0;
	if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &start, &count) != 0)
		return ENXIO;
	if (start == IO_KBD + KBD_STATUS_PORT) {
		start = IO_KBD;
		count++;
	}
	if (count > 1)	/* adjust the count and/or start port */
		bus_set_resource(dev, SYS_RES_IOPORT, rid, start, 1);
	port0 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
	if (port0 == NULL)
		return ENXIO;
	rid = 1;
	if (bus_get_resource(dev, SYS_RES_IOPORT, rid, NULL, NULL) != 0)
		bus_set_resource(dev, SYS_RES_IOPORT, 1,
				 start + KBD_STATUS_PORT, 1);
	port1 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
	if (port1 == NULL) {
		bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
		return ENXIO;
	}

#if defined(__i386__) || defined(__amd64__)
	/*
	 * Check if we really have AT keyboard controller. Poll status
	 * register until we get "all clear" indication. If no such
	 * indication comes, it probably means that there is no AT
	 * keyboard controller present. Give up in such case. Check relies
	 * on the fact that reading from non-existing in/out port returns
	 * 0xff on i386. May or may not be true on other platforms.
	 */
	tag = rman_get_bustag(port0);
	ioh1 = rman_get_bushandle(port1);
	flags = intr_disable();
	for (i = 0; i != 65535; i++) {
		if ((bus_space_read_1(tag, ioh1, 0) & 0x2) == 0)
			break;
	}
	intr_restore(flags);
	if (i == 65535) {
		bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
		bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
		if (bootverbose)
			device_printf(dev, "AT keyboard controller not found\n");
		return ENXIO;
	}
#endif

	device_verbose(dev);

	error = atkbdc_probe_unit(device_get_unit(dev), port0, port1);

	bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
	bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);

	return error;
}