Sync ulpt driver with NetBSD

1 files changed, 1609 insertions, 0 deletions

diff --git a/sys/dev/usb/if_url.c b/sys/dev/usb/if_url.c
new file mode 100644
index 00000000000..d0d542a4171
--- /dev/null
+++ b/sys/dev/usb/if_url.c
@@ -0,0 +1,1609 @@
+/*	$OpenBSD: if_url.c,v 1.1 2002/05/07 18:08:04 nate Exp $ */
+/*	$NetBSD: if_url.c,v 1.2 2002/03/28 21:49:19 ichiro Exp $	*/
+/*
+ * Copyright (c) 2001, 2002
+ *     Shingo WATANABE <nabe@nabechan.org>.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Shingo WATANABE.
+ * 4. Neither the name of the author nor the names of any co-contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+/*
+ * The RTL8150L(Realtek USB to fast ethernet controller) spec can be found at
+ *   ftp://ftp.realtek.com.tw/lancard/data_sheet/8150/8150v14.pdf
+ *   ftp://152.104.125.40/lancard/data_sheet/8150/8150v14.pdf
+ */
+
+/*
+ * TODO:
+ *	Interrupt Endpoint support
+ *	External PHYs
+ *	powerhook() support?
+ */
+
+#include "opt_inet.h"
+#include "opt_ns.h"
+#include "bpfilter.h"
+#include "rnd.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/lock.h>
+#include <sys/mbuf.h>
+#include <sys/kernel.h>
+#include <sys/socket.h>
+
+#include <sys/device.h>
+#if NRND > 0
+#include <sys/rnd.h>
+#endif
+
+#include <net/if.h>
+#include <net/if_arp.h>
+#include <net/if_dl.h>
+#include <net/if_media.h>
+
+#if NBPFILTER > 0
+#include <net/bpf.h>
+#endif
+#define	BPF_MTAP(ifp, m)	bpf_mtap((ifp)->if_bpf, (m))
+
+#include <net/if_ether.h>
+#ifdef INET
+#include <netinet/in.h>
+#include <netinet/if_inarp.h>
+#endif
+#ifdef NS
+#include <netns/ns.h>
+#include <netns/ns_if.h>
+#endif
+
+#include <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+#include <dev/mii/urlphyreg.h>
+
+#include <dev/usb/usb.h>
+#include <dev/usb/usbdi.h>
+#include <dev/usb/usbdi_util.h>
+#include <dev/usb/usbdevs.h>
+
+#include <dev/usb/if_urlreg.h>
+
+
+/* Function declarations */
+USB_DECLARE_DRIVER(url);
+
+Static int url_openpipes(struct url_softc *);
+Static int url_rx_list_init(struct url_softc *);
+Static int url_tx_list_init(struct url_softc *);
+Static int url_newbuf(struct url_softc *, struct url_chain *, struct mbuf *);
+Static void url_start(struct ifnet *);
+Static int url_send(struct url_softc *, struct mbuf *, int);
+Static void url_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
+Static void url_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
+Static void url_tick(void *);
+Static void url_tick_task(void *);
+Static int url_ioctl(struct ifnet *, u_long, caddr_t);
+Static void url_stop_task(struct url_softc *);
+Static void url_stop(struct ifnet *, int);
+Static void url_watchdog(struct ifnet *);
+Static int url_ifmedia_change(struct ifnet *);
+Static void url_ifmedia_status(struct ifnet *, struct ifmediareq *);
+Static void url_lock_mii(struct url_softc *);
+Static void url_unlock_mii(struct url_softc *);
+Static int url_int_miibus_readreg(device_ptr_t, int, int);
+Static void url_int_miibus_writereg(device_ptr_t, int, int, int);
+Static void url_miibus_statchg(device_ptr_t);
+Static int url_init(struct ifnet *);
+Static void url_setmulti(struct url_softc *);
+Static void url_reset(struct url_softc *);
+
+Static int url_csr_read_1(struct url_softc *, int);
+Static int url_csr_read_2(struct url_softc *, int);
+Static int url_csr_write_1(struct url_softc *, int, int);
+Static int url_csr_write_2(struct url_softc *, int, int);
+Static int url_csr_write_4(struct url_softc *, int, int);
+Static int url_mem(struct url_softc *, int, int, void *, int);
+
+/* Macros */
+#ifdef URL_DEBUG
+#define DPRINTF(x)	if (urldebug) logprintf x
+#define DPRINTFN(n,x)	if (urldebug >= (n)) logprintf x
+int urldebug = 0;
+#else
+#define DPRINTF(x)
+#define DPRINTFN(n,x)
+#endif
+
+#define	URL_SETBIT(sc, reg, x)	\
+	url_csr_write_1(sc, reg, url_csr_read_1(sc, reg) | (x))
+
+#define	URL_SETBIT2(sc, reg, x)	\
+	url_csr_write_2(sc, reg, url_csr_read_2(sc, reg) | (x))
+
+#define	URL_CLRBIT(sc, reg, x)	\
+	url_csr_write_1(sc, reg, url_csr_read_1(sc, reg) & ~(x))
+
+#define	URL_CLRBIT2(sc, reg, x)	\
+	url_csr_write_2(sc, reg, url_csr_read_2(sc, reg) & ~(x))
+
+static const struct url_type {
+	struct usb_devno url_dev;
+	u_int16_t url_flags;
+#define URL_EXT_PHY	0x0001
+} url_devs [] = {
+	/* MELCO LUA-KTX */
+	{{ USB_VENDOR_MELCO, USB_PRODUCT_MELCO_LUAKTX }, 0},
+	/* GREEN HOUSE USBKR100 */
+	{{ USB_VENDOR_GREENHOUSE2, USB_PRODUCT_GREENHOUSE2_USBKR100}, 0}
+};
+#define url_lookup(v, p) ((struct url_type *)usb_lookup(url_devs, v, p))
+
+
+/* Probe */
+USB_MATCH(url)
+{
+	USB_MATCH_START(url, uaa);
+
+	if (uaa->iface != NULL)
+		return (UMATCH_NONE);
+
+	return (url_lookup(uaa->vendor, uaa->product) != NULL ?
+		UMATCH_VENDOR_PRODUCT : UMATCH_NONE);
+}
+/* Attach */
+USB_ATTACH(url)
+{
+	USB_ATTACH_START(url, sc, uaa);
+	usbd_device_handle dev = uaa->device;
+	usbd_interface_handle iface;
+	usbd_status err;
+	usb_interface_descriptor_t *id;
+	usb_endpoint_descriptor_t *ed;
+	char devinfo[1024];
+	char *devname = USBDEVNAME(sc->sc_dev);
+	struct ifnet *ifp;
+	struct mii_data *mii;
+	u_char eaddr[ETHER_ADDR_LEN];
+	int i, s;
+
+	usbd_devinfo(dev, 0, devinfo);
+	USB_ATTACH_SETUP;
+	printf("%s: %s\n", devname, devinfo);
+
+	/* Move the device into the configured state. */
+	err = usbd_set_config_no(dev, URL_CONFIG_NO, 1);
+	if (err) {
+		printf("%s: setting config no failed\n", devname);
+		goto bad;
+	}
+
+	usb_init_task(&sc->sc_tick_task, url_tick_task, sc);
+	lockinit(&sc->sc_mii_lock, PZERO, "urlmii", 0, 0);
+	usb_init_task(&sc->sc_stop_task, (void (*)(void *)) url_stop_task, sc);
+
+	/* get control interface */
+	err = usbd_device2interface_handle(dev, URL_IFACE_INDEX, &iface);
+	if (err) {
+		printf("%s: failed to get interface, err=%s\n", devname,
+		       usbd_errstr(err));
+		goto bad;
+	}
+
+	sc->sc_udev = dev;
+	sc->sc_ctl_iface = iface;
+	sc->sc_flags = url_lookup(uaa->vendor, uaa->product)->url_flags;
+
+	/* get interface descriptor */
+	id = usbd_get_interface_descriptor(sc->sc_ctl_iface);
+
+	/* find endpoints */
+	sc->sc_bulkin_no = sc->sc_bulkout_no = sc->sc_intrin_no = -1;
+	for (i = 0; i < id->bNumEndpoints; i++) {
+		ed = usbd_interface2endpoint_descriptor(sc->sc_ctl_iface, i);
+		if (ed == NULL) {
+			printf("%s: couldn't get endpoint %d\n", devname, i);
+			goto bad;
+		}
+		if ((ed->bmAttributes & UE_XFERTYPE) == UE_BULK &&
+		    UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN)
+			sc->sc_bulkin_no = ed->bEndpointAddress; /* RX */
+		else if ((ed->bmAttributes & UE_XFERTYPE) == UE_BULK &&
+			 UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT)
+			sc->sc_bulkout_no = ed->bEndpointAddress; /* TX */
+		else if ((ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT &&
+			 UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN)
+			sc->sc_intrin_no = ed->bEndpointAddress; /* Status */
+	}
+
+	if (sc->sc_bulkin_no == -1 || sc->sc_bulkout_no == -1 ||
+	    sc->sc_intrin_no == -1) {
+		printf("%s: missing endpoint\n", devname);
+		goto bad;
+	}
+
+	s = splnet();
+
+	/* reset the adapter */
+	url_reset(sc);
+
+	/* Get Ethernet Address */
+	err = url_mem(sc, URL_CMD_READMEM, URL_IDR0, (void *)eaddr,
+		      ETHER_ADDR_LEN);
+	if (err) {
+		printf("%s: read MAC address faild\n", devname);
+		splx(s);
+		goto bad;
+	}
+
+	/* Print Ethernet Address */
+	printf("%s: Ethernet address %s\n", devname, ether_sprintf(eaddr));
+
+	/* initialize interface infomation */
+	ifp = GET_IFP(sc);
+	ifp->if_softc = sc;
+	strncpy(ifp->if_xname, devname, IFNAMSIZ);
+	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
+	ifp->if_start = url_start;
+	ifp->if_ioctl = url_ioctl;
+	ifp->if_watchdog = url_watchdog;
+	ifp->if_init = url_init;
+	ifp->if_stop = url_stop;
+
+	IFQ_SET_READY(&ifp->if_snd);
+
+	/*
+	 * Do ifmedia setup.
+	 */
+	mii = &sc->sc_mii;
+	mii->mii_ifp = ifp;
+	mii->mii_readreg = url_int_miibus_readreg;
+	mii->mii_writereg = url_int_miibus_writereg;
+#if 0
+	if (sc->sc_flags & URL_EXT_PHY) {
+		mii->mii_readreg = url_ext_miibus_readreg;
+		mii->mii_writereg = url_ext_miibus_writereg;
+	}
+#endif
+	mii->mii_statchg = url_miibus_statchg;
+	mii->mii_flags = MIIF_AUTOTSLEEP;
+	ifmedia_init(&mii->mii_media, 0,
+		     url_ifmedia_change, url_ifmedia_status);
+	mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0);
+	if (LIST_FIRST(&mii->mii_phys) == NULL) {
+		ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL);
+		ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE);
+	} else
+		ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO);
+
+	/* attach the interface */
+	if_attach(ifp);
+	Ether_ifattach(ifp, eaddr);
+
+#if NRND > 0
+	rnd_attach_source(&sc->rnd_source, devname, RND_TYPE_NET, 0);
+#endif
+
+	usb_callout_init(sc->sc_stat_ch);
+	sc->sc_attached = 1;
+	splx(s);
+
+	usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, dev, USBDEV(sc->sc_dev));
+
+	USB_ATTACH_SUCCESS_RETURN;
+
+ bad:
+	sc->sc_dying = 1;
+	USB_ATTACH_ERROR_RETURN;
+}
+
+/* detach */
+USB_DETACH(url)
+{
+	USB_DETACH_START(url, sc);
+	struct ifnet *ifp = GET_IFP(sc);
+	int s;
+
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	/* Detached before attached finished */
+	if (!sc->sc_attached)
+		return (0);
+
+	usb_uncallout(sc->sc_stat_ch, url_tick, sc);
+
+	/* Remove any pending tasks */
+	usb_rem_task(sc->sc_udev, &sc->sc_tick_task);
+	usb_rem_task(sc->sc_udev, &sc->sc_stop_task);
+
+	s = splusb();
+
+	if (--sc->sc_refcnt >= 0) {
+		/* Wait for processes to go away */
+		usb_detach_wait(USBDEV(sc->sc_dev));
+	}
+
+	if (ifp->if_flags & IFF_RUNNING)
+		url_stop(GET_IFP(sc), 1);
+
+#if NRND > 0
+	rnd_detach_source(&sc->rnd_source);
+#endif
+	mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY);
+	ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY);
+	ether_ifdetach(ifp);
+	if_detach(ifp);
+
+#ifdef DIAGNOSTIC
+	if (sc->sc_pipe_tx != NULL)
+		printf("%s: detach has active tx endpoint.\n",
+		       USBDEVNAME(sc->sc_dev));
+	if (sc->sc_pipe_rx != NULL)
+		printf("%s: detach has active rx endpoint.\n",
+		       USBDEVNAME(sc->sc_dev));
+	if (sc->sc_pipe_intr != NULL)
+		printf("%s: detach has active intr endpoint.\n",
+		       USBDEVNAME(sc->sc_dev));
+#endif
+
+	sc->sc_attached = 0;
+
+	splx(s);
+
+	usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
+			   USBDEV(sc->sc_dev));
+
+	return (0);
+}
+
+/* read/write memory */
+Static int
+url_mem(struct url_softc *sc, int cmd, int offset, void *buf, int len)
+{
+	usb_device_request_t req;
+	usbd_status err;
+
+	if (sc == NULL)
+		return (0);
+
+	DPRINTFN(0x200,
+		("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	if (sc->sc_dying)
+		return (0);
+
+	if (cmd == URL_CMD_READMEM)
+		req.bmRequestType = UT_READ_VENDOR_DEVICE;
+	else
+		req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
+	req.bRequest = URL_REQ_MEM;
+	USETW(req.wValue, offset);
+	USETW(req.wIndex, 0x0000);
+	USETW(req.wLength, len);
+
+	sc->sc_refcnt++;
+	err = usbd_do_request(sc->sc_udev, &req, buf);
+	if (--sc->sc_refcnt < 0)
+		usb_detach_wakeup(USBDEV(sc->sc_dev));
+	if (err) {
+		DPRINTF(("%s: url_mem(): %s failed. off=%04x, err=%d\n",
+			 USBDEVNAME(sc->sc_dev),
+			 cmd == URL_CMD_READMEM ? "read" : "write",
+			 offset, err));
+	}	
+
+	return (err);
+}
+
+/* read 1byte from register */
+Static int
+url_csr_read_1(struct url_softc *sc, int reg)
+{
+	u_int8_t val = 0;
+
+	DPRINTFN(0x100,
+		 ("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	if (sc->sc_dying)
+		return (0);
+	
+	return (url_mem(sc, URL_CMD_READMEM, reg, &val, 1) ? 0 : val);
+}
+
+/* read 2bytes from register */
+Static int
+url_csr_read_2(struct url_softc *sc, int reg)
+{
+	uWord val;
+
+	DPRINTFN(0x100,
+		 ("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	if (sc->sc_dying)
+		return (0);
+	
+	USETW(val, 0);
+	return (url_mem(sc, URL_CMD_READMEM, reg, &val, 2) ? 0 : UGETW(val));
+}
+
+/* write 1byte to register */
+Static int
+url_csr_write_1(struct url_softc *sc, int reg, int aval)
+{
+	u_int8_t val = aval;
+
+	DPRINTFN(0x100,
+		 ("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	if (sc->sc_dying)
+		return (0);
+	
+	return (url_mem(sc, URL_CMD_WRITEMEM, reg, &val, 1) ? -1 : 0);
+}
+
+/* write 2bytes to register */
+Static int
+url_csr_write_2(struct url_softc *sc, int reg, int aval)
+{
+	uWord val;
+
+	DPRINTFN(0x100,
+		 ("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	USETW(val, aval);
+
+	if (sc->sc_dying)
+		return (0);
+	
+	return (url_mem(sc, URL_CMD_WRITEMEM, reg, &val, 2) ? -1 : 0);
+}
+
+/* write 4bytes to register */
+Static int
+url_csr_write_4(struct url_softc *sc, int reg, int aval)
+{
+	uDWord val;
+
+	DPRINTFN(0x100,
+		 ("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	USETDW(val, aval);
+
+	if (sc->sc_dying)
+		return (0);
+	
+	return (url_mem(sc, URL_CMD_WRITEMEM, reg, &val, 4) ? -1 : 0);
+}
+
+Static int
+url_init(struct ifnet *ifp)
+{
+	struct url_softc *sc = ifp->if_softc;
+	struct mii_data *mii = GET_MII(sc);
+	u_char *eaddr;
+	int i, s;
+
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+	
+	if (sc->sc_dying)
+		return (EIO);
+
+	s = splnet();
+
+	/* Cancel pending I/O and free all TX/RX buffers */
+	url_stop(ifp, 1);
+
+	eaddr = LLADDR(ifp->if_sadl);
+	for (i = 0; i < ETHER_ADDR_LEN; i++)
+		url_csr_write_1(sc, URL_IDR0 + i, eaddr[i]);
+
+	/* Init transmission control register */
+	URL_CLRBIT(sc, URL_TCR,
+		   URL_TCR_TXRR1 | URL_TCR_TXRR0 |
+		   URL_TCR_IFG1 | URL_TCR_IFG0 |
+		   URL_TCR_NOCRC);
+
+	/* Init receive control register */
+	URL_SETBIT2(sc, URL_RCR, URL_RCR_TAIL | URL_RCR_AD);
+	if (ifp->if_flags & IFF_BROADCAST)
+		URL_SETBIT2(sc, URL_RCR, URL_RCR_AB);
+	else
+		URL_CLRBIT2(sc, URL_RCR, URL_RCR_AB);
+
+	/* If we want promiscuous mode, accept all physical frames. */
+	if (ifp->if_flags & IFF_PROMISC)
+		URL_SETBIT2(sc, URL_RCR, URL_RCR_AAM|URL_RCR_AAP);
+	else
+		URL_CLRBIT2(sc, URL_RCR, URL_RCR_AAM|URL_RCR_AAP);
+
+	
+	/* Initialize transmit ring */
+	if (url_tx_list_init(sc) == ENOBUFS) {
+		printf("%s: tx list init failed\n", USBDEVNAME(sc->sc_dev));
+		splx(s);
+		return (EIO);
+	}
+
+	/* Initialize receive ring */
+	if (url_rx_list_init(sc) == ENOBUFS) {
+		printf("%s: rx list init failed\n", USBDEVNAME(sc->sc_dev));
+		splx(s);
+		return (EIO);
+	}
+
+	/* Load the multicast filter */
+	url_setmulti(sc);
+
+	/* Enable RX and TX */
+	URL_SETBIT(sc, URL_CR, URL_CR_TE | URL_CR_RE);
+
+	mii_mediachg(mii);
+
+	if (sc->sc_pipe_tx == NULL || sc->sc_pipe_rx == NULL) {
+		if (url_openpipes(sc)) {
+			splx(s);
+			return (EIO);
+		}
+	}
+
+	ifp->if_flags |= IFF_RUNNING;
+	ifp->if_flags &= ~IFF_OACTIVE;
+
+	splx(s);
+
+	usb_callout(sc->sc_stat_ch, hz, url_tick, sc);
+
+	return (0);
+}
+
+Static void
+url_reset(struct url_softc *sc)
+{
+	int i;
+	
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	if (sc->sc_dying)
+		return;
+
+	URL_SETBIT(sc, URL_CR, URL_CR_SOFT_RST);
+
+	for (i = 0; i < URL_TX_TIMEOUT; i++) {
+		if (!(url_csr_read_1(sc, URL_CR) & URL_CR_SOFT_RST))
+			break;
+		delay(10);	/* XXX */
+	}
+
+	delay(10000);		/* XXX */
+}
+
+int
+url_activate(device_ptr_t self, enum devact act)
+{
+	struct url_softc *sc = (struct url_softc *)self;
+
+	DPRINTF(("%s: %s: enter, act=%d\n", USBDEVNAME(sc->sc_dev),
+		 __FUNCTION__, act));
+
+	switch (act) {
+	case DVACT_ACTIVATE:
+		return (EOPNOTSUPP);
+		break;
+
+	case DVACT_DEACTIVATE:
+		if_deactivate(&sc->sc_ec.ec_if);
+		sc->sc_dying = 1;
+		break;
+	}
+
+	return (0);
+}
+
+#define url_calchash(addr) (ether_crc32_be((addr), ETHER_ADDR_LEN) >> 26)
+
+
+Static void
+url_setmulti(struct url_softc *sc)
+{
+	struct ifnet *ifp;
+	struct ether_multi *enm;
+	struct ether_multistep step;
+	u_int32_t hashes[2] = { 0, 0 };
+	int h = 0;
+	int mcnt = 0;
+
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	if (sc->sc_dying)
+		return;
+
+	ifp = GET_IFP(sc);
+
+	if (ifp->if_flags & IFF_PROMISC) {
+		URL_SETBIT2(sc, URL_RCR, URL_RCR_AAM|URL_RCR_AAP);
+		return;
+	} else if (ifp->if_flags & IFF_ALLMULTI) {
+	allmulti:
+		ifp->if_flags |= IFF_ALLMULTI;
+		URL_SETBIT2(sc, URL_RCR, URL_RCR_AAM);
+		URL_CLRBIT2(sc, URL_RCR, URL_RCR_AAP);
+		return;
+	}
+
+	/* first, zot all the existing hash bits */
+	url_csr_write_4(sc, URL_MAR0, 0);
+	url_csr_write_4(sc, URL_MAR4, 0);
+
+	/* now program new ones */
+	ETHER_FIRST_MULTI(step, &sc->sc_ec, enm);
+	while (enm != NULL) {
+		if (memcmp(enm->enm_addrlo, enm->enm_addrhi,
+			   ETHER_ADDR_LEN) != 0)
+			goto allmulti;
+
+		h = url_calchash(enm->enm_addrlo);
+		if (h < 32)
+			hashes[0] |= (1 << h);
+		else
+			hashes[1] |= (1 << (h -32));
+		mcnt++;
+		ETHER_NEXT_MULTI(step, enm);
+	}
+
+	ifp->if_flags &= ~IFF_ALLMULTI;
+
+	URL_CLRBIT2(sc, URL_RCR, URL_RCR_AAM|URL_RCR_AAP);
+
+	if (mcnt){
+		URL_SETBIT2(sc, URL_RCR, URL_RCR_AM);
+	} else {
+		URL_CLRBIT2(sc, URL_RCR, URL_RCR_AM);
+	}
+	url_csr_write_4(sc, URL_MAR0, hashes[0]);
+	url_csr_write_4(sc, URL_MAR4, hashes[1]);
+}
+
+Static int
+url_openpipes(struct url_softc *sc)
+{
+	struct url_chain *c;
+	usbd_status err;
+	int i;
+	int error = 0;
+
+	if (sc->sc_dying)
+		return (EIO);
+	
+	sc->sc_refcnt++;
+
+	/* Open RX pipe */
+	err = usbd_open_pipe(sc->sc_ctl_iface, sc->sc_bulkin_no,
+			     USBD_EXCLUSIVE_USE, &sc->sc_pipe_rx);
+	if (err) {
+		printf("%s: open rx pipe failed: %s\n",
+		       USBDEVNAME(sc->sc_dev), usbd_errstr(err));
+		error = EIO;
+		goto done;
+	}
+	
+	/* Open TX pipe */
+	err = usbd_open_pipe(sc->sc_ctl_iface, sc->sc_bulkout_no,
+			     USBD_EXCLUSIVE_USE, &sc->sc_pipe_tx);
+	if (err) {
+		printf("%s: open tx pipe failed: %s\n",
+		       USBDEVNAME(sc->sc_dev), usbd_errstr(err));
+		error = EIO;
+		goto done;
+	}
+
+#if 0
+	/* XXX: interrupt endpoint is not yet supported */
+	/* Open Interrupt pipe */
+	err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_intrin_no,
+				  USBD_EXCLUSIVE_USE, &sc->sc_pipe_intr, sc,
+				  &sc->sc_cdata.url_ibuf, URL_INTR_PKGLEN,
+				  url_intr, URL_INTR_INTERVAL);
+	if (err) {
+		printf("%s: open intr pipe failed: %s\n",
+		       USBDEVNAME(sc->sc_dev), usbd_errstr(err));
+		error = EIO;
+		goto done;
+	}
+#endif
+
+
+	/* Start up the receive pipe. */
+	for (i = 0; i < URL_RX_LIST_CNT; i++) {
+		c = &sc->sc_cdata.url_rx_chain[i];
+		usbd_setup_xfer(c->url_xfer, sc->sc_pipe_rx,
+				c, c->url_buf, URL_BUFSZ,
+				USBD_SHORT_XFER_OK | USBD_NO_COPY,
+				USBD_NO_TIMEOUT, url_rxeof);
+		(void)usbd_transfer(c->url_xfer);
+		DPRINTF(("%s: %s: start read\n", USBDEVNAME(sc->sc_dev),
+			 __FUNCTION__));
+	}
+
+ done:
+	if (--sc->sc_refcnt < 0)
+		usb_detach_wakeup(USBDEV(sc->sc_dev));
+	
+	return (error);
+}
+
+Static int
+url_newbuf(struct url_softc *sc, struct url_chain *c, struct mbuf *m)
+{
+	struct mbuf *m_new = NULL;
+
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	if (m == NULL) {
+		MGETHDR(m_new, M_DONTWAIT, MT_DATA);
+		if (m_new == NULL) {
+			printf("%s: no memory for rx list "
+			       "-- packet dropped!\n", USBDEVNAME(sc->sc_dev));
+			return (ENOBUFS);
+		}
+		MCLGET(m_new, M_DONTWAIT);
+		if (!(m_new->m_flags & M_EXT)) {
+			printf("%s: no memory for rx list "
+			       "-- packet dropped!\n", USBDEVNAME(sc->sc_dev));
+			m_freem(m_new);
+			return (ENOBUFS);
+		}
+		m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
+	} else {
+		m_new = m;
+		m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
+		m_new->m_data = m_new->m_ext.ext_buf;
+	}
+
+	m_adj(m_new, ETHER_ALIGN);
+	c->url_mbuf = m_new;
+
+	return (0);
+}
+	
+
+Static int
+url_rx_list_init(struct url_softc *sc)
+{
+	struct url_cdata *cd;
+	struct url_chain *c;
+	int i;
+
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	cd = &sc->sc_cdata;
+	for (i = 0; i < URL_RX_LIST_CNT; i++) {
+		c = &cd->url_rx_chain[i];
+		c->url_sc = sc;
+		c->url_idx = i;
+		if (url_newbuf(sc, c, NULL) == ENOBUFS)
+			return (ENOBUFS);
+		if (c->url_xfer == NULL) {
+			c->url_xfer = usbd_alloc_xfer(sc->sc_udev);
+			if (c->url_xfer == NULL)
+				return (ENOBUFS);
+			c->url_buf = usbd_alloc_buffer(c->url_xfer, URL_BUFSZ);
+			if (c->url_buf == NULL) {
+				usbd_free_xfer(c->url_xfer);
+				return (ENOBUFS);
+			}
+		}
+	}
+	
+	return (0);
+}
+
+Static int
+url_tx_list_init(struct url_softc *sc)
+{
+	struct url_cdata *cd;
+	struct url_chain *c;
+	int i;
+
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	cd = &sc->sc_cdata;
+	for (i = 0; i < URL_TX_LIST_CNT; i++) {
+		c = &cd->url_tx_chain[i];
+		c->url_sc = sc;
+		c->url_idx = i;
+		c->url_mbuf = NULL;
+		if (c->url_xfer == NULL) {
+			c->url_xfer = usbd_alloc_xfer(sc->sc_udev);
+			if (c->url_xfer == NULL)
+				return (ENOBUFS);
+			c->url_buf = usbd_alloc_buffer(c->url_xfer, URL_BUFSZ);
+			if (c->url_buf == NULL) {
+				usbd_free_xfer(c->url_xfer);
+				return (ENOBUFS);
+			}
+		}
+	}
+	
+	return (0);
+}
+
+Static void
+url_start(struct ifnet *ifp)
+{
+	struct url_softc *sc = ifp->if_softc;
+	struct mbuf *m_head = NULL;
+	
+	DPRINTF(("%s: %s: enter, link=%d\n", USBDEVNAME(sc->sc_dev),
+		 __FUNCTION__, sc->sc_link));
+
+	if (sc->sc_dying)
+		return;
+
+	if (!sc->sc_link)
+		return;
+
+	if (ifp->if_flags & IFF_OACTIVE)
+		return;
+
+	IFQ_POLL(&ifp->if_snd, m_head);
+	if (m_head == NULL)
+		return;
+
+	if (url_send(sc, m_head, 0)) {
+		ifp->if_flags |= IFF_OACTIVE;
+		return;
+	}
+
+	IFQ_DEQUEUE(&ifp->if_snd, m_head);
+
+#if NBPFILTER > 0
+	if (ifp->if_bpf)
+		bpf_mtap(ifp->if_bpf, m_head);
+#endif
+
+	ifp->if_flags |= IFF_OACTIVE;
+
+	/* Set a timeout in case the chip goes out to lunch. */
+	ifp->if_timer = 5;
+}
+
+Static int
+url_send(struct url_softc *sc, struct mbuf *m, int idx)
+{
+	int total_len;
+	struct url_chain *c;
+	usbd_status err;
+
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev),__FUNCTION__));
+
+	c = &sc->sc_cdata.url_tx_chain[idx];
+
+	/* Copy the mbuf data into a contiguous buffer */
+	m_copydata(m, 0, m->m_pkthdr.len, c->url_buf);
+	c->url_mbuf = m;
+	total_len = m->m_pkthdr.len;
+
+	if (total_len < URL_MIN_FRAME_LEN)
+		total_len = URL_MIN_FRAME_LEN;
+	usbd_setup_xfer(c->url_xfer, sc->sc_pipe_tx, c, c->url_buf, total_len,
+			USBD_FORCE_SHORT_XFER | USBD_NO_COPY,
+			URL_TX_TIMEOUT, url_txeof);
+
+	/* Transmit */
+	sc->sc_refcnt++;
+	err = usbd_transfer(c->url_xfer);
+	if (--sc->sc_refcnt < 0)
+		usb_detach_wakeup(USBDEV(sc->sc_dev));
+	if (err != USBD_IN_PROGRESS) {
+		printf("%s: url_send error=%s\n", USBDEVNAME(sc->sc_dev),
+		       usbd_errstr(err));
+		/* Stop the interface */
+		usb_add_task(sc->sc_udev, &sc->sc_stop_task);
+		return (EIO);
+	}
+
+	DPRINTF(("%s: %s: send %d bytes\n", USBDEVNAME(sc->sc_dev),
+		 __FUNCTION__, total_len));
+
+	sc->sc_cdata.url_tx_cnt++;
+
+	return (0);
+}
+
+Static void
+url_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
+{
+	struct url_chain *c = priv;
+	struct url_softc *sc = c->url_sc;
+	struct ifnet *ifp = GET_IFP(sc);
+	int s;
+
+	if (sc->sc_dying)
+		return;
+
+	s = splnet();
+
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	ifp->if_timer = 0;
+	ifp->if_flags &= ~IFF_OACTIVE;
+
+	if (status != USBD_NORMAL_COMPLETION) {
+		if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
+			splx(s);
+			return;
+		}
+		ifp->if_oerrors++;
+		printf("%s: usb error on tx: %s\n", USBDEVNAME(sc->sc_dev),
+		       usbd_errstr(status));
+		if (status == USBD_STALLED) {
+			sc->sc_refcnt++;
+			usbd_clear_endpoint_stall(sc->sc_pipe_tx);
+			if (--sc->sc_refcnt < 0)
+				usb_detach_wakeup(USBDEV(sc->sc_dev));
+		}
+		splx(s);
+		return;
+	}
+
+	ifp->if_opackets++;
+
+	m_free(c->url_mbuf);
+	c->url_mbuf = NULL;
+
+	if (IFQ_IS_EMPTY(&ifp->if_snd) == 0)
+		url_start(ifp);
+
+	splx(s);
+}
+
+Static void
+url_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
+{
+	struct url_chain *c = priv;
+	struct url_softc *sc = c->url_sc;
+	struct ifnet *ifp = GET_IFP(sc);
+	struct mbuf *m;
+	u_int32_t total_len;
+	url_rxhdr_t rxhdr;
+	int s;
+
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev),__FUNCTION__));
+
+	if (sc->sc_dying)
+		return;
+
+	if (status != USBD_NORMAL_COMPLETION) {
+		if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
+			return;
+		sc->sc_rx_errs++;
+		if (usbd_ratecheck(&sc->sc_rx_notice)) {
+			printf("%s: %u usb errors on rx: %s\n",
+			       USBDEVNAME(sc->sc_dev), sc->sc_rx_errs,
+			       usbd_errstr(status));
+			sc->sc_rx_errs = 0;
+		}
+		if (status == USBD_STALLED) {
+			sc->sc_refcnt++;
+			usbd_clear_endpoint_stall(sc->sc_pipe_rx);
+			if (--sc->sc_refcnt < 0)
+				usb_detach_wakeup(USBDEV(sc->sc_dev));
+		}
+		goto done;
+	}
+
+	usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
+
+	memcpy(mtod(c->url_mbuf, char *), c->url_buf, total_len);
+
+	if (total_len <= ETHER_CRC_LEN) {
+		ifp->if_ierrors++;
+		goto done;
+	}
+
+	memcpy(&rxhdr, c->url_buf + total_len - ETHER_CRC_LEN, sizeof(rxhdr));
+
+	DPRINTF(("%s: RX Status: %dbytes%s%s%s%s packets\n",
+		 USBDEVNAME(sc->sc_dev),
+		 UGETW(rxhdr) & URL_RXHDR_BYTEC_MASK,
+		 UGETW(rxhdr) & URL_RXHDR_VALID_MASK ? ", Valid" : "",
+		 UGETW(rxhdr) & URL_RXHDR_RUNTPKT_MASK ? ", Runt" : "",
+		 UGETW(rxhdr) & URL_RXHDR_PHYPKT_MASK ? ", Physical match" : "",
+		 UGETW(rxhdr) & URL_RXHDR_MCASTPKT_MASK ? ", Multicast" : ""));
+
+	if ((UGETW(rxhdr) & URL_RXHDR_VALID_MASK) == 0) {
+		ifp->if_ierrors++;
+		goto done;
+	}
+
+	ifp->if_ipackets++;
+	total_len -= ETHER_CRC_LEN;
+
+	m = c->url_mbuf;
+	m->m_pkthdr.len = m->m_len = total_len;
+	m->m_pkthdr.rcvif = ifp;
+
+	s = splnet();
+
+	if (url_newbuf(sc, c, NULL) == ENOBUFS) {
+		ifp->if_ierrors++;
+		goto done1;
+	}
+
+#if NBPFILTER > 0
+	if (ifp->if_bpf)
+		BPF_MTAP(ifp, m);
+#endif
+
+	DPRINTF(("%s: %s: deliver %d\n", USBDEVNAME(sc->sc_dev),
+		 __FUNCTION__, m->m_len));
+	IF_INPUT(ifp, m);
+
+ done1:
+	splx(s);
+
+ done:
+	/* Setup new transfer */
+	usbd_setup_xfer(xfer, sc->sc_pipe_rx, c, c->url_buf, URL_BUFSZ,
+			USBD_SHORT_XFER_OK | USBD_NO_COPY,
+			USBD_NO_TIMEOUT, url_rxeof);
+	sc->sc_refcnt++;
+	usbd_transfer(xfer);
+	if (--sc->sc_refcnt < 0)
+		usb_detach_wakeup(USBDEV(sc->sc_dev));
+
+	DPRINTF(("%s: %s: start rx\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+}
+
+#if 0
+Static void url_intr()
+{
+}
+#endif
+
+Static int
+url_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
+{
+	struct url_softc *sc = ifp->if_softc;
+	struct ifreq *ifr = (struct ifreq *)data;
+	struct mii_data *mii;
+	int s, error = 0;
+
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	if (sc->sc_dying)
+		return (EIO);
+
+	s = splnet();
+
+	switch (cmd) {
+	case SIOCGIFMEDIA:
+	case SIOCSIFMEDIA:
+		mii = GET_MII(sc);
+		error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
+		break;
+
+	default:
+		error = ether_ioctl(ifp, cmd, data);
+		if (error == ENETRESET) {
+			url_setmulti(sc);
+			error = 0;
+		}
+		break;
+	}
+
+	splx(s);
+
+	return (error);
+}
+
+Static void
+url_watchdog(struct ifnet *ifp)
+{
+	struct url_softc *sc = ifp->if_softc;
+	struct url_chain *c;
+	usbd_status stat;
+	int s;
+	
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	ifp->if_oerrors++;
+	printf("%s: watchdog timeout\n", USBDEVNAME(sc->sc_dev));
+
+	s = splusb();
+	c = &sc->sc_cdata.url_tx_chain[0];
+	usbd_get_xfer_status(c->url_xfer, NULL, NULL, NULL, &stat);
+	url_txeof(c->url_xfer, c, stat);
+
+	if (IFQ_IS_EMPTY(&ifp->if_snd) == 0)
+		url_start(ifp);
+	splx(s);
+}
+
+Static void
+url_stop_task(struct url_softc *sc)
+{
+	url_stop(GET_IFP(sc), 1);
+}
+
+/* Stop the adapter and free any mbufs allocated to the RX and TX lists. */
+Static void
+url_stop(struct ifnet *ifp, int disable)
+{
+	struct url_softc *sc = ifp->if_softc;
+	usbd_status err;
+	int i;
+	
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	ifp->if_timer = 0;
+
+	url_reset(sc);
+
+	usb_uncallout(sc->sc_stat_ch, url_tick, sc);
+
+	/* Stop transfers */
+	/* RX endpoint */
+	if (sc->sc_pipe_rx != NULL) {
+		err = usbd_abort_pipe(sc->sc_pipe_rx);
+		if (err)
+			printf("%s: abort rx pipe failed: %s\n",
+			       USBDEVNAME(sc->sc_dev), usbd_errstr(err));
+		err = usbd_close_pipe(sc->sc_pipe_rx);
+		if (err)
+			printf("%s: close rx pipe failed: %s\n",
+			       USBDEVNAME(sc->sc_dev), usbd_errstr(err));
+		sc->sc_pipe_rx = NULL;
+	}
+
+	/* TX endpoint */
+	if (sc->sc_pipe_tx != NULL) {
+		err = usbd_abort_pipe(sc->sc_pipe_tx);
+		if (err)
+			printf("%s: abort tx pipe failed: %s\n",
+			       USBDEVNAME(sc->sc_dev), usbd_errstr(err));
+		err = usbd_close_pipe(sc->sc_pipe_tx);
+		if (err)
+			printf("%s: close tx pipe failed: %s\n",
+			       USBDEVNAME(sc->sc_dev), usbd_errstr(err));
+		sc->sc_pipe_tx = NULL;
+	}
+
+#if 0
+	/* XXX: Interrupt endpoint is not yet supported!! */
+	/* Interrupt endpoint */
+	if (sc->sc_pipe_intr != NULL) {
+		err = usbd_abort_pipe(sc->sc_pipe_intr);
+		if (err)
+			printf("%s: abort intr pipe failed: %s\n",
+			       USBDEVNAME(sc->sc_dev), usbd_errstr(err));
+		err = usbd_close_pipe(sc->sc_pipe_intr);
+		if (err)
+			printf("%s: close intr pipe failed: %s\n",
+			       USBDEVNAME(sc->sc_dev), usbd_errstr(err));
+		sc->sc_pipe_intr = NULL;
+	}
+#endif
+
+	/* Free RX resources. */
+	for (i = 0; i < URL_RX_LIST_CNT; i++) {
+		if (sc->sc_cdata.url_rx_chain[i].url_mbuf != NULL) {
+			m_freem(sc->sc_cdata.url_rx_chain[i].url_mbuf);
+			sc->sc_cdata.url_rx_chain[i].url_mbuf = NULL;
+		}
+		if (sc->sc_cdata.url_rx_chain[i].url_xfer != NULL) {
+			usbd_free_xfer(sc->sc_cdata.url_rx_chain[i].url_xfer);
+			sc->sc_cdata.url_rx_chain[i].url_xfer = NULL;
+		}
+	}
+
+	/* Free TX resources. */
+	for (i = 0; i < URL_TX_LIST_CNT; i++) {
+		if (sc->sc_cdata.url_tx_chain[i].url_mbuf != NULL) {
+			m_freem(sc->sc_cdata.url_tx_chain[i].url_mbuf);
+			sc->sc_cdata.url_tx_chain[i].url_mbuf = NULL;
+		}
+		if (sc->sc_cdata.url_tx_chain[i].url_xfer != NULL) {
+			usbd_free_xfer(sc->sc_cdata.url_tx_chain[i].url_xfer);
+			sc->sc_cdata.url_tx_chain[i].url_xfer = NULL;
+		}
+	}
+
+	sc->sc_link = 0;
+	ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
+}
+
+/* Set media options */
+Static int
+url_ifmedia_change(struct ifnet *ifp)
+{
+	struct url_softc *sc = ifp->if_softc;
+	struct mii_data *mii = GET_MII(sc);
+
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	if (sc->sc_dying)
+		return (0);
+
+	sc->sc_link = 0;
+	if (mii->mii_instance) {
+		struct mii_softc *miisc;
+		for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL;
+		     miisc = LIST_NEXT(miisc, mii_list))
+			mii_phy_reset(miisc);
+	}
+
+	return (mii_mediachg(mii));
+}
+
+/* Report current media status. */
+Static void
+url_ifmedia_status(struct ifnet *ifp, struct ifmediareq *ifmr)
+{
+	struct url_softc *sc = ifp->if_softc;
+	struct mii_data *mii = GET_MII(sc);
+
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+
+	if (sc->sc_dying)
+		return;
+
+	if ((ifp->if_flags & IFF_RUNNING) == 0) {
+		ifmr->ifm_active = IFM_ETHER | IFM_NONE;
+		ifmr->ifm_status = 0;
+		return;
+	}
+
+	mii_pollstat(mii);
+	ifmr->ifm_active = mii->mii_media_active;
+	ifmr->ifm_status = mii->mii_media_status;
+}
+
+Static void
+url_tick(void *xsc)
+{
+	struct url_softc *sc = xsc;
+
+	if (sc == NULL)
+		return;
+
+	DPRINTFN(0xff, ("%s: %s: enter\n", USBDEVNAME(sc->sc_dev),
+			__FUNCTION__));
+
+	if (sc->sc_dying)
+		return;
+
+	/* Perform periodic stuff in process context */
+	usb_add_task(sc->sc_udev, &sc->sc_tick_task);
+}
+
+Static void
+url_tick_task(void *xsc)
+{
+	struct url_softc *sc = xsc;
+	struct ifnet *ifp;
+	struct mii_data *mii;
+	int s;
+
+	if (sc == NULL)
+		return;
+
+	DPRINTFN(0xff, ("%s: %s: enter\n", USBDEVNAME(sc->sc_dev),
+			__FUNCTION__));
+
+	if (sc->sc_dying)
+		return;
+
+	ifp = GET_IFP(sc);
+	mii = GET_MII(sc);
+
+	if (mii == NULL)
+		return;
+
+	s = splnet();
+
+	mii_tick(mii);
+	if (!sc->sc_link) {
+		mii_pollstat(mii);
+		if (mii->mii_media_status & IFM_ACTIVE &&
+		    IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
+			DPRINTF(("%s: %s: got link\n",
+				 USBDEVNAME(sc->sc_dev), __FUNCTION__));
+			sc->sc_link++;
+			if (IFQ_IS_EMPTY(&ifp->if_snd) == 0)
+				   url_start(ifp);
+		}
+	}
+
+	usb_callout(sc->sc_stat_ch, hz, url_tick, sc);
+
+	splx(s);
+}
+
+/* Get exclusive access to the MII registers */
+Static void
+url_lock_mii(struct url_softc *sc)
+{
+	DPRINTFN(0xff, ("%s: %s: enter\n", USBDEVNAME(sc->sc_dev),
+			__FUNCTION__));
+
+	sc->sc_refcnt++;
+	lockmgr(&sc->sc_mii_lock, LK_EXCLUSIVE, NULL);
+}
+
+Static void
+url_unlock_mii(struct url_softc *sc)
+{
+	DPRINTFN(0xff, ("%s: %s: enter\n", USBDEVNAME(sc->sc_dev),
+		       __FUNCTION__));
+
+	lockmgr(&sc->sc_mii_lock, LK_RELEASE, NULL);
+	if (--sc->sc_refcnt < 0)
+		usb_detach_wakeup(USBDEV(sc->sc_dev));
+}
+
+Static int
+url_int_miibus_readreg(device_ptr_t dev, int phy, int reg)
+{
+	struct url_softc *sc;
+	u_int16_t val;
+
+	if (dev == NULL)
+		return (0);
+
+	sc = USBGETSOFTC(dev);
+
+	DPRINTFN(0xff, ("%s: %s: enter, phy=%d reg=0x%04x\n",
+		 USBDEVNAME(sc->sc_dev), __FUNCTION__, phy, reg));
+
+	if (sc->sc_dying) {
+#ifdef DIAGNOSTIC
+		printf("%s: %s: dying\n", USBDEVNAME(sc->sc_dev),
+		       __FUNCTION__);
+#endif
+		return (0);
+	}
+
+	/* XXX: one PHY only for the RTL8150 internal PHY */
+	if (phy != 0) {
+		DPRINTFN(0xff, ("%s: %s: phy=%d is not supported\n",
+			 USBDEVNAME(sc->sc_dev), __FUNCTION__, phy));
+		return (0);
+	}
+
+	url_lock_mii(sc);
+
+	switch (reg) {
+	case MII_BMCR:		/* Control Register */
+		reg = URL_BMCR;
+		break;
+	case MII_BMSR:		/* Status Register */
+		reg = URL_BMSR;
+		break;
+	case MII_PHYIDR1:
+	case MII_PHYIDR2:
+		val = 0;
+		goto R_DONE;
+		break;
+	case MII_ANAR:		/* Autonegotiation advertisement */
+		reg = URL_ANAR;
+		break;
+	case MII_ANLPAR:	/* Autonegotiation link partner abilities */
+		reg = URL_ANLP;
+		break;
+	case URLPHY_MSR:	/* Media Status Register */
+		reg = URL_MSR;
+		break;
+	default:
+		printf("%s: %s: bad register %04x\n",
+		       USBDEVNAME(sc->sc_dev), __FUNCTION__, reg);
+		val = 0;
+		goto R_DONE;
+		break;
+	}
+
+	if (reg == URL_MSR)
+		val = url_csr_read_1(sc, reg);
+	else
+		val = url_csr_read_2(sc, reg);
+
+ R_DONE:
+	DPRINTFN(0xff, ("%s: %s: phy=%d reg=0x%04x => 0x%04x\n",
+		 USBDEVNAME(sc->sc_dev), __FUNCTION__, phy, reg, val));
+
+	url_unlock_mii(sc);
+	return (val);
+}
+
+Static void
+url_int_miibus_writereg(device_ptr_t dev, int phy, int reg, int data)
+{
+	struct url_softc *sc;
+
+	if (dev == NULL)
+		return;
+
+	sc = USBGETSOFTC(dev);
+
+	DPRINTFN(0xff, ("%s: %s: enter, phy=%d reg=0x%04x data=0x%04x\n",
+		 USBDEVNAME(sc->sc_dev), __FUNCTION__, phy, reg, data));
+
+	if (sc->sc_dying) {
+#ifdef DIAGNOSTIC
+		printf("%s: %s: dying\n", USBDEVNAME(sc->sc_dev),
+		       __FUNCTION__);
+#endif
+		return;
+	}
+
+	/* XXX: one PHY only for the RTL8150 internal PHY */
+	if (phy != 0) {
+		DPRINTFN(0xff, ("%s: %s: phy=%d is not supported\n",
+			 USBDEVNAME(sc->sc_dev), __FUNCTION__, phy));
+		return;
+	}
+
+	url_lock_mii(sc);
+
+	switch (reg) {
+	case MII_BMCR:		/* Control Register */
+		reg = URL_BMCR;
+		break;
+	case MII_BMSR:		/* Status Register */
+		reg = URL_BMSR;
+		break;
+	case MII_PHYIDR1:
+	case MII_PHYIDR2:
+		goto W_DONE;
+		break;
+	case MII_ANAR:		/* Autonegotiation advertisement */
+		reg = URL_ANAR;
+		break;
+	case MII_ANLPAR:	/* Autonegotiation link partner abilities */
+		reg = URL_ANLP;
+		break;
+	case URLPHY_MSR:	/* Media Status Register */
+		reg = URL_MSR;
+		break;
+	default:
+		printf("%s: %s: bad register %04x\n",
+		       USBDEVNAME(sc->sc_dev), __FUNCTION__, reg);
+		goto W_DONE;
+		break;
+	}
+
+	if (reg == URL_MSR)
+		url_csr_write_1(sc, reg, data);
+	else
+		url_csr_write_2(sc, reg, data);
+ W_DONE:
+
+	url_unlock_mii(sc);
+	return;
+}
+
+Static void
+url_miibus_statchg(device_ptr_t dev)
+{
+#ifdef URL_DEBUG
+	struct url_softc *sc;
+
+	if (dev == NULL)
+		return;
+
+	sc = USBGETSOFTC(dev);
+	DPRINTF(("%s: %s: enter\n", USBDEVNAME(sc->sc_dev), __FUNCTION__));
+#endif
+	/* Nothing to do */
+}
+
+#if 0
+/*
+ * external PHYs support, but not test.
+ */
+Static int
+url_ext_miibus_redreg(device_ptr_t dev, int phy, int reg)
+{
+	struct url_softc *sc = USBGETSOFTC(dev);
+	u_int16_t val;
+
+	DPRINTF(("%s: %s: enter, phy=%d reg=0x%04x\n",
+		 USBDEVNAME(sc->sc_dev), __FUNCTION__, phy, reg));
+
+	if (sc->sc_dying) {
+#ifdef DIAGNOSTIC
+		printf("%s: %s: dying\n", USBDEVNAME(sc->sc_dev),
+		       __FUNCTION__);
+#endif
+		return (0);
+	}
+
+	url_lock_mii(sc);
+
+	url_csr_write_1(sc, URL_PHYADD, phy & URL_PHYADD_MASK);
+	/*
+	 * RTL8150L will initiate a MII management data transaction
+	 * if PHYCNT_OWN bit is set 1 by software. After transaction,
+	 * this bit is auto cleared by TRL8150L.
+	 */
+	url_csr_write_1(sc, URL_PHYCNT,
+			(reg | URL_PHYCNT_PHYOWN) & ~URL_PHYCNT_RWCR);
+	for (i = 0; i < URL_TIMEOUT; i++) {
+		if ((url_csr_read_1(sc, URL_PHYCNT) & URL_PHYCNT_PHYOWN) == 0)
+			break;
+	}
+	if (i == URL_TIMEOUT) {
+		printf("%s: MII read timed out\n", USBDEVNAME(sc->sc_dev));
+	}
+	
+	val = url_csr_read_2(sc, URL_PHYDAT);
+
+	DPRINTF(("%s: %s: phy=%d reg=0x%04x => 0x%04x\n",
+		 USBDEVNAME(sc->sc_dev), __FUNCTION__, phy, reg, val));
+
+	url_unlock_mii(sc);
+	return (val);
+}
+
+Static void
+url_ext_miibus_writereg(device_ptr_t dev, int phy, int reg, int data)
+{
+	struct url_softc *sc = USBGETSOFTC(dev);
+
+	DPRINTF(("%s: %s: enter, phy=%d reg=0x%04x data=0x%04x\n",
+		 USBDEVNAME(sc->sc_dev), __FUNCTION__, phy, reg, data));
+
+	if (sc->sc_dying) {
+#ifdef DIAGNOSTIC
+		printf("%s: %s: dying\n", USBDEVNAME(sc->sc_dev),
+		       __FUNCTION__);
+#endif
+		return;
+	}
+
+	url_lock_mii(sc);
+
+	url_csr_write_2(sc, URL_PHYDAT, data);
+	url_csr_write_1(sc, URL_PHYADD, phy);
+	url_csr_write_1(sc, URL_PHYCNT, reg | URL_PHYCNT_RWCR);	/* Write */
+
+	for (i=0; i < URL_TIMEOUT; i++) {
+		if (url_csr_read_1(sc, URL_PHYCNT) & URL_PHYCNT_PHYOWN)
+			break;
+	}
+
+	if (i == URL_TIMEOUT) {
+		printf("%s: MII write timed out\n",
+		       USBDEVNAME(sc->sc_dev));
+	}
+
+	url_unlock_mii(sc);
+	return;
+}
+#endif
+