Driver for MOSCHIP MCS7x30 usb ethernet chips by Johann Christian Rode

3 files changed, 1672 insertions, 1 deletions

diff --git a/sys/dev/usb/files.usb b/sys/dev/usb/files.usb
index 098a116d5dd..d5d26ad7c6e 100644
--- a/sys/dev/usb/files.usb
+++ b/sys/dev/usb/files.usb
@@ -1,4 +1,4 @@
-#	$OpenBSD: files.usb,v 1.76 2008/04/09 19:49:55 robert Exp $
+#	$OpenBSD: files.usb,v 1.77 2008/10/23 17:21:22 deraadt Exp $
 #	$NetBSD: files.usb,v 1.16 2000/02/14 20:29:54 augustss Exp $
 #
 # Config file and device description for machine-independent USB code.
@@ -169,6 +169,11 @@ device	cdce: ether, ifnet, ifmedia
 attach	cdce at uhub
 file	dev/usb/if_cdce.c		cdce
 
+# Moschip MCS7x30 Ethernet
+device	mos: ether, ifnet, mii, ifmedia
+attach	mos at uhub
+file	dev/usb/if_mos.c		mos
+
 # Davicom DM9601
 device	udav: ether, ifnet, mii, ifmedia
 attach	udav at uhub
diff --git a/sys/dev/usb/if_mos.c b/sys/dev/usb/if_mos.c
new file mode 100644
index 00000000000..dfad0a79b46
--- /dev/null
+++ b/sys/dev/usb/if_mos.c
@@ -0,0 +1,1475 @@
+/*
+ * Copyright (c) 2008 Johann Christian Rode <jcrode@gmx.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * Copyright (c) 2005, 2006, 2007 Jonathan Gray <jsg@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * Copyright (c) 1997, 1998, 1999, 2000-2003
+ *	Bill Paul <wpaul@windriver.com>.  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 Bill Paul.
+ * 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 Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+
+/*
+ * Moschip MCS7730/MCS7830 USB to Ethernet controller 
+ * The datasheet is available at the following URL: 
+ * http://www.moschip.com/data/products/MCS7830/Data%20Sheet_7830.pdf
+ */
+
+#include "bpfilter.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/sockio.h>
+#include <sys/rwlock.h>
+#include <sys/mbuf.h>
+#include <sys/kernel.h>
+#include <sys/proc.h>
+#include <sys/socket.h>
+
+#include <sys/device.h>
+
+#include <machine/bus.h>
+
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/if_media.h>
+
+#if NBPFILTER > 0
+#include <net/bpf.h>
+#endif
+
+#ifdef INET
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/in_var.h>
+#include <netinet/ip.h>
+#include <netinet/if_ether.h>
+#endif
+
+#include <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+
+#include <dev/usb/usb.h>
+#include <dev/usb/usbdi.h>
+#include <dev/usb/usbdi_util.h>
+#include <dev/usb/usbdivar.h>
+#include <dev/usb/usbdevs.h>
+
+#include <dev/usb/if_mosreg.h>
+
+#ifdef MOS_DEBUG
+#define DPRINTF(x)      do { if (mosdebug) printf x; } while (0)
+#define DPRINTFN(n,x)   do { if (mosdebug >= (n)) printf x; } while (0)
+int     mosdebug = 0;
+#else
+#define DPRINTF(x)
+#define DPRINTFN(n,x)
+#endif
+
+/*
+ * Various supported device vendors/products.
+ */
+const struct mos_type mos_devs[] = {
+	{ { USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7730 }, MCS7730 },
+	{ { USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7830 }, MCS7830 },
+	{ { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_LN030 }, MCS7830 },
+};
+#define mos_lookup(v, p) ((struct mos_type *)usb_lookup(mos_devs, v, p))
+
+int mos_match(struct device *, void *, void *);
+void mos_attach(struct device *, struct device *, void *);
+int mos_detach(struct device *, int);
+int mos_activate(struct device *, enum devact);
+
+struct cfdriver mos_cd = {
+	NULL, "mos", DV_IFNET
+};
+
+const struct cfattach mos_ca = {
+	sizeof(struct mos_softc),
+	mos_match,
+	mos_attach,
+	mos_detach,
+	mos_activate,
+};
+
+int mos_tx_list_init(struct mos_softc *);
+int mos_rx_list_init(struct mos_softc *);
+struct mbuf *mos_newbuf(void);
+int mos_encap(struct mos_softc *, struct mbuf *, int);
+void mos_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
+void mos_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
+void mos_tick(void *);
+void mos_tick_task(void *);
+void mos_start(struct ifnet *);
+int mos_ioctl(struct ifnet *, u_long, caddr_t);
+void mos_init(void *);
+void mos_chip_init(struct mos_softc *);
+void mos_stop(struct mos_softc *);
+void mos_watchdog(struct ifnet *);
+int mos_miibus_readreg(struct device *, int, int);
+void mos_miibus_writereg(struct device *, int, int, int);
+void mos_miibus_statchg(struct device *);
+int mos_ifmedia_upd(struct ifnet *);
+void mos_ifmedia_sts(struct ifnet *, struct ifmediareq *);
+void mos_reset(struct mos_softc *sc);
+
+int mos_reg_read_1(struct mos_softc *, int);
+int mos_reg_read_2(struct mos_softc *, int);
+int mos_reg_write_1(struct mos_softc *, int, int);
+int mos_reg_write_2(struct mos_softc *, int, int);
+int mos_readmac(struct mos_softc *, u_char *);
+int mos_writemac(struct mos_softc *, u_char *);
+int mos_write_mcast(struct mos_softc *, u_char *);
+
+void mos_setmulti(struct mos_softc *);
+void mos_lock_mii(struct mos_softc *);
+void mos_unlock_mii(struct mos_softc *);
+
+/*
+ * Get exclusive access to the MII registers
+ */
+void
+mos_lock_mii(struct mos_softc *sc)
+{
+	sc->mos_refcnt++;
+	rw_enter_write(&sc->mos_mii_lock);
+}
+
+void
+mos_unlock_mii(struct mos_softc *sc)
+{
+	rw_exit_write(&sc->mos_mii_lock);
+	if (--sc->mos_refcnt < 0)
+		usb_detach_wakeup(&sc->mos_dev);
+}
+
+int
+mos_reg_read_1(struct mos_softc *sc, int reg)
+{
+	usb_device_request_t	req;
+	usbd_status		err;
+	uByte			val = 0;
+
+	if (sc->mos_dying)
+		return (0);
+
+	req.bmRequestType = UT_READ_VENDOR_DEVICE;
+	req.bRequest = MOS_UR_READREG;
+	USETW(req.wValue, 0);
+	USETW(req.wIndex, reg);
+	USETW(req.wLength, 1);
+
+	err = usbd_do_request(sc->mos_udev, &req, &val);
+
+	if (err) {
+		DPRINTF(("mos_reg_read_1 error, reg: %d\n", reg));
+		return (0);
+	}
+
+	return (val);
+}
+
+int
+mos_reg_read_2(struct mos_softc *sc, int reg)
+{
+	usb_device_request_t	req;
+	usbd_status		err;
+	uWord			val;
+
+	USETW(val,0);
+
+	if (sc->mos_dying)
+		return(0);
+
+	req.bmRequestType = UT_READ_VENDOR_DEVICE;
+	req.bRequest = MOS_UR_READREG;
+	USETW(req.wValue, 0);
+	USETW(req.wIndex, reg);
+	USETW(req.wLength, 2);
+
+	err = usbd_do_request(sc->mos_udev, &req, &val);
+
+	if (err) {
+		DPRINTF(("mos_reg_read_2 error, reg: %d\n", reg));
+		return(0);
+	}
+
+	return(UGETW(val));
+}
+
+int
+mos_reg_write_1(struct mos_softc *sc, int reg, int aval)
+{
+	usb_device_request_t	req;
+	usbd_status		err;
+	uByte			val;
+
+	val = aval;
+
+	if (sc->mos_dying)
+		return(0);
+
+	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
+	req.bRequest = MOS_UR_WRITEREG;
+	USETW(req.wValue, 0);
+	USETW(req.wIndex, reg);
+	USETW(req.wLength, 1);
+
+	err = usbd_do_request(sc->mos_udev, &req, &val);
+
+	if (err) {
+		DPRINTF(("mos_reg_write_1 error, reg: %d\n", reg));
+		return(-1);
+	}
+
+	return(0);
+}
+
+int
+mos_reg_write_2(struct mos_softc *sc, int reg, int aval)
+{
+	usb_device_request_t	req;
+	usbd_status		err;
+	uWord			val;
+
+	USETW(val, aval);
+
+	if (sc->mos_dying)
+		return(0);
+
+	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
+	req.bRequest = MOS_UR_WRITEREG;
+	USETW(req.wValue, 0);
+	USETW(req.wIndex, reg);
+	USETW(req.wLength, 2);
+
+	err = usbd_do_request(sc->mos_udev, &req, &val);
+
+	if (err) {
+		DPRINTF(("mos_reg_write_2 error, reg: %d\n", reg));
+		return(-1);
+	}
+
+	return(0);
+}
+
+int
+mos_readmac(struct mos_softc *sc, u_char *mac)
+{
+	usb_device_request_t	req;
+	usbd_status		err;
+
+	if (sc->mos_dying)
+		return(0);
+
+	req.bmRequestType = UT_READ_VENDOR_DEVICE;
+	req.bRequest = MOS_UR_READREG;
+	USETW(req.wValue, 0);
+	USETW(req.wIndex, MOS_MAC);
+	USETW(req.wLength, ETHER_ADDR_LEN);
+
+	err = usbd_do_request(sc->mos_udev, &req, mac);
+
+	if (err) {
+		DPRINTF(("mos_readmac error"));
+		return(-1);
+	}
+
+	return(0);
+}
+
+int
+mos_writemac(struct mos_softc *sc, u_char *mac)
+{
+	usb_device_request_t	req;
+	usbd_status		err;
+
+	if (sc->mos_dying)
+		return(0);
+
+	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
+	req.bRequest = MOS_UR_WRITEREG;
+	USETW(req.wValue, 0);
+	USETW(req.wIndex, MOS_MAC);
+	USETW(req.wLength, ETHER_ADDR_LEN);
+
+	err = usbd_do_request(sc->mos_udev, &req, mac);
+
+	if (err) {
+		DPRINTF(("mos_writemac error"));
+		return(-1);
+	}
+
+	return(0);
+}
+
+int
+mos_write_mcast(struct mos_softc *sc, u_char *hashtbl)
+{
+	usb_device_request_t	req;
+	usbd_status		err;
+
+	if (sc->mos_dying)
+		return(0);
+
+	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
+	req.bRequest = MOS_UR_WRITEREG;
+	USETW(req.wValue, 0);
+	USETW(req.wIndex, MOS_MCAST_TABLE);
+	USETW(req.wLength, 8);
+
+	err = usbd_do_request(sc->mos_udev, &req, hashtbl);
+
+	if (err) {
+		DPRINTF(("mos_reg_mcast error\n"));
+		return(-1);
+	}
+
+	return(0);
+}
+
+int
+mos_miibus_readreg(struct device *dev, int phy, int reg)
+{
+	struct mos_softc	*sc = (void *)dev;
+	uWord			val;
+	int			i,res;
+
+	if (sc->mos_dying) {
+		DPRINTF(("mos: dying\n"));
+		return (0);
+	}
+
+	USETW(val, 0);
+
+	mos_lock_mii(sc);
+
+	mos_reg_write_2(sc, MOS_PHY_DATA, 0);
+	mos_reg_write_1(sc, MOS_PHY_CTL, (phy & MOS_PHYCTL_PHYADDR) |
+	    MOS_PHYCTL_READ);
+	mos_reg_write_1(sc, MOS_PHY_STS, (reg & MOS_PHYSTS_PHYREG) |
+	    MOS_PHYSTS_PENDING);
+
+	for (i = 0; i < MOS_TIMEOUT; i++) {
+		if (mos_reg_read_1(sc, MOS_PHY_STS) & MOS_PHYSTS_READY)
+			break;
+	}
+	if (i == MOS_TIMEOUT) {
+		printf("%s: MII read timeout\n", sc->mos_dev.dv_xname);
+	}
+
+	res = mos_reg_read_2(sc, MOS_PHY_DATA);
+
+	mos_unlock_mii(sc);
+
+	return (res);
+}
+
+void
+mos_miibus_writereg(struct device *dev, int phy, int reg, int val)
+{
+	struct mos_softc	*sc = (void *)dev;
+	int			i;
+
+	if (sc->mos_dying)
+		return;
+
+	mos_lock_mii(sc);
+
+	mos_reg_write_2(sc, MOS_PHY_DATA, val);
+	mos_reg_write_1(sc, MOS_PHY_CTL, (phy & MOS_PHYCTL_PHYADDR) |
+	    MOS_PHYCTL_WRITE);
+	mos_reg_write_1(sc, MOS_PHY_STS, (reg & MOS_PHYSTS_PHYREG) |
+	    MOS_PHYSTS_PENDING);
+
+	for (i = 0; i < MOS_TIMEOUT; i++) {
+		if (mos_reg_read_1(sc, MOS_PHY_STS) & MOS_PHYSTS_READY)
+			break;
+	}
+	if (i == MOS_TIMEOUT) {
+		printf("%s: MII write timeout\n", sc->mos_dev.dv_xname);
+	}
+
+	mos_unlock_mii(sc);
+
+	return;
+}
+
+void
+mos_miibus_statchg(struct device *dev)
+{
+	struct mos_softc	*sc = (void *)dev;
+	struct mii_data		*mii = GET_MII(sc);
+	int			val, err;
+
+	val = mos_reg_read_1(sc, MOS_CTL);
+	if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX)
+		val |= MOS_CTL_FDX_ENB;
+	else
+		val &= ~(MOS_CTL_FDX_ENB);
+
+	switch (IFM_SUBTYPE(mii->mii_media_active)) {
+		case IFM_100_TX:
+			val |=  MOS_CTL_SPEEDSEL;
+			break;
+		case IFM_10_T:
+			val &= ~(MOS_CTL_SPEEDSEL);
+			break;
+	}
+
+	err = mos_reg_write_1(sc, MOS_CTL, val);
+	if (err) {
+		printf("%s: media change failed\n", sc->mos_dev.dv_xname);
+		return;
+	}
+}
+
+/*
+ * Set media options.
+ */
+int
+mos_ifmedia_upd(struct ifnet *ifp)
+{
+	struct mos_softc	*sc = ifp->if_softc;
+	struct mii_data		*mii = GET_MII(sc);
+
+	sc->mos_link = 0;
+	if (mii->mii_instance) {
+		struct mii_softc	*miisc;
+		LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
+			mii_phy_reset(miisc);
+	}
+	mii_mediachg(mii);
+
+	return (0);
+}
+
+/*
+ * Report current media status.
+ */
+void
+mos_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
+{
+	struct mos_softc	*sc = ifp->if_softc;
+	struct mii_data		*mii = GET_MII(sc);
+
+	mii_pollstat(mii);
+	ifmr->ifm_active = mii->mii_media_active;
+	ifmr->ifm_status = mii->mii_media_status;
+}
+
+void
+mos_setmulti(struct mos_softc *sc)
+{
+	struct ifnet		*ifp;
+	struct ether_multi	*enm;
+	struct ether_multistep	step;
+	u_int32_t		h = 0;
+	u_int8_t		rxmode;
+	u_int8_t		hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+
+	if (sc->mos_dying)
+		return;
+
+	ifp = GET_IFP(sc);
+
+	rxmode = mos_reg_read_1(sc, MOS_CTL);
+
+	if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
+allmulti:
+		rxmode |= MOS_CTL_ALLMULTI;
+		mos_reg_write_1(sc, MOS_CTL, rxmode);
+		return;
+	} else
+		rxmode &= ~MOS_CTL_ALLMULTI;
+
+	/* now program new ones */
+	ETHER_FIRST_MULTI(step, &sc->arpcom, enm);
+	while (enm != NULL) {
+		if (memcmp(enm->enm_addrlo, enm->enm_addrhi,
+			   ETHER_ADDR_LEN) != 0)
+			goto allmulti;
+
+		h = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN) >> 26;
+		hashtbl[h / 8] |= 1 << (h % 8);
+		ETHER_NEXT_MULTI(step, enm);
+	}
+
+	ifp->if_flags &= ~IFF_ALLMULTI;
+	mos_write_mcast(sc, (void *)&hashtbl);
+	mos_reg_write_1(sc, MOS_CTL, rxmode);
+	return;
+}
+
+void
+mos_reset(struct mos_softc *sc)
+{
+	u_int8_t ctl;
+	if (sc->mos_dying)
+		return;
+
+	ctl = mos_reg_read_1(sc, MOS_CTL);
+	ctl &= ~(MOS_CTL_RX_PROMISC | MOS_CTL_ALLMULTI | MOS_CTL_TX_ENB |
+	    MOS_CTL_RX_ENB);
+	/* Disable RX, TX, promiscuous and allmulticast mode */
+	mos_reg_write_1(sc, MOS_CTL, ctl);
+
+	/* Wait a little while for the chip to get its brains in order. */
+	DELAY(1000);
+	return;
+}
+
+void
+mos_chip_init(struct mos_softc *sc)
+{
+	uByte	val;
+	int	i;
+
+	/*
+	 * Rev.C devices have a pause threshold register which needs to be set
+	 * at startup.
+	 */
+	val = mos_reg_read_1(sc, MOS_MAC0);
+	if (val) {
+		for (i=0;i<MOS_PAUSE_REWRITES;i++)
+			mos_reg_write_1(sc, MOS_CTL, 0);
+	}
+
+	sc->mos_phyaddrs[0] = 1; sc->mos_phyaddrs[1] = 0xFF;
+}
+
+/*
+ * Probe for a MCS7x30 chip.
+ */
+int
+mos_match(struct device *parent, void *match, void *aux)
+{
+	struct usb_attach_arg *uaa = aux;
+
+	if (!uaa->iface)
+		return(UMATCH_NONE);
+
+	return (mos_lookup(uaa->vendor, uaa->product) != NULL ?
+		UMATCH_VENDOR_PRODUCT : UMATCH_NONE);
+}
+
+/*
+ * Attach the interface. Allocate softc structures, do ifmedia
+ * setup and ethernet/BPF attach.
+ */
+void
+mos_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct mos_softc	*sc = (struct mos_softc *)self;
+	struct usb_attach_arg	*uaa = aux;
+	struct ifnet		*ifp;
+	usbd_device_handle	dev = uaa->device;
+	usbd_status		err;
+	usb_interface_descriptor_t 	*id;
+	usb_endpoint_descriptor_t 	*ed;
+	struct mii_data 	*mii;
+	u_char			eaddr[ETHER_ADDR_LEN];
+	int			i,s;
+
+	sc->mos_unit = self->dv_unit;
+
+	err = usbd_set_config_no(dev, MOS_CONFIG_NO, 1);
+	if (err) {
+		printf("%s: getting interface handle failed\n",
+		    sc->mos_dev.dv_xname);
+		return;
+	}
+
+	usb_init_task(&sc->mos_tick_task, mos_tick_task, sc);
+	rw_init(&sc->mos_mii_lock, "mosmii");
+	usb_init_task(&sc->mos_stop_task, (void (*)(void *))mos_stop, sc);
+
+	err = usbd_device2interface_handle(dev, MOS_IFACE_IDX, &sc->mos_iface);
+	if (err) {
+		printf("%s: getting interface handle failed\n",
+		    sc->mos_dev.dv_xname);
+		return;
+	}
+
+	sc->mos_udev = dev;
+	sc->mos_flags = mos_lookup(uaa->vendor, uaa->product)->mos_flags;
+
+	id = usbd_get_interface_descriptor(sc->mos_iface);
+
+	sc->mos_bufsz = (sc->mos_udev->speed == USB_SPEED_HIGH) ?
+		    MOS_MAX_BUFSZ : MOS_MIN_BUFSZ;
+
+	/* Find endpoints. */
+	for (i = 0; i < id->bNumEndpoints; i++) {
+		ed = usbd_interface2endpoint_descriptor(sc->mos_iface, i);
+		if (!ed) {
+			printf("%s: couldn't get ep %d\n",
+			    sc->mos_dev.dv_xname, i);
+			return;
+		}
+		if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
+		    UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
+			sc->mos_ed[MOS_ENDPT_RX] = ed->bEndpointAddress;
+		} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
+			   UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
+			sc->mos_ed[MOS_ENDPT_TX] = ed->bEndpointAddress;
+		} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
+			   UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
+			sc->mos_ed[MOS_ENDPT_INTR] = ed->bEndpointAddress;
+		}
+	}
+
+	s = splnet();
+
+	printf("%s:", sc->mos_dev.dv_xname);
+
+	if (sc->mos_flags & MCS7730) {
+		printf(" MCS7730");
+	} else if (sc->mos_flags & MCS7830) {
+		printf(" MCS7830");
+	}
+
+	mos_chip_init(sc);
+
+	/*
+	 * Read MAC address, inform the world.
+	 */
+	err = mos_readmac(sc, (void*)&eaddr);
+	if (err) {
+		printf("%s: couldn't get MAC address\n",
+		    sc->mos_dev.dv_xname);
+		return;
+	}
+	bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
+	printf(", address %s\n", ether_sprintf(eaddr));
+
+
+	/* Initialize interface info.*/
+	ifp = GET_IFP(sc);
+	ifp->if_softc = sc;
+	ifp->if_flags = IFF_SIMPLEX | IFF_MULTICAST;
+	ifp->if_ioctl = mos_ioctl;
+	ifp->if_start = mos_start;
+	ifp->if_watchdog = mos_watchdog;
+	strlcpy(ifp->if_xname, sc->mos_dev.dv_xname, IFNAMSIZ);
+
+	IFQ_SET_READY(&ifp->if_snd);
+
+	/* Initialize MII/media info. */
+	mii = GET_MII(sc);
+	mii->mii_ifp = ifp;
+	mii->mii_readreg = mos_miibus_readreg;
+	mii->mii_writereg = mos_miibus_writereg;
+	mii->mii_statchg = mos_miibus_statchg;
+	mii->mii_flags = MIIF_AUTOTSLEEP;
+
+	ifmedia_init(&mii->mii_media, 0, mos_ifmedia_upd, mos_ifmedia_sts);
+	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);
+
+	timeout_set(&sc->mos_stat_ch, mos_tick, sc);
+
+	sc->mos_attached = 1;
+	splx(s);
+
+	usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->mos_udev,
+			   &sc->mos_dev);
+}
+
+int
+mos_detach(struct device *self, int flags)
+{
+	struct mos_softc	*sc = (struct mos_softc *)self;
+	struct ifnet		*ifp = GET_IFP(sc);
+	int			s;
+
+	DPRINTFN(2,("%s: %s: enter\n", sc->mos_dev.dv_xname, __func__));
+
+	if (!sc->mos_attached)
+		return (0);
+
+	timeout_del(&sc->mos_stat_ch);
+
+	sc->mos_dying = 1;
+
+	// ether_ifdetach(ifp);
+
+	if (sc->mos_ep[MOS_ENDPT_TX] != NULL)
+		usbd_abort_pipe(sc->mos_ep[MOS_ENDPT_TX]);
+	if (sc->mos_ep[MOS_ENDPT_RX] != NULL)
+		usbd_abort_pipe(sc->mos_ep[MOS_ENDPT_RX]);
+	if (sc->mos_ep[MOS_ENDPT_INTR] != NULL)
+		usbd_abort_pipe(sc->mos_ep[MOS_ENDPT_INTR]);
+
+	/*
+	 * Remove any pending tasks.  They cannot be executing because they run
+	 * in the same thread as detach.
+	 */
+	usb_rem_task(sc->mos_udev, &sc->mos_tick_task);
+	usb_rem_task(sc->mos_udev, &sc->mos_stop_task);
+	s = splusb();
+
+	if (--sc->mos_refcnt >= 0) {
+		/* Wait for processes to go away */
+		usb_detach_wait(&sc->mos_dev);
+	}
+
+	if (ifp->if_flags & IFF_RUNNING)
+		mos_stop(sc);
+
+	mii_detach(&sc->mos_mii, MII_PHY_ANY, MII_OFFSET_ANY);
+	ifmedia_delete_instance(&sc->mos_mii.mii_media, IFM_INST_ANY);
+	ether_ifdetach(ifp);
+	if_detach(ifp);
+
+#ifdef DIAGNOSTIC
+	if (sc->mos_ep[MOS_ENDPT_TX] != NULL ||
+	    sc->mos_ep[MOS_ENDPT_RX] != NULL ||
+	    sc->mos_ep[MOS_ENDPT_INTR] != NULL)
+		printf("%s: detach has active endpoints\n",
+		    sc->mos_dev.dv_xname);
+#endif
+
+	sc->mos_attached = 0;
+
+	if (--sc->mos_refcnt >= 0) {
+		/* Wait for processes to go away. */
+		usb_detach_wait(&sc->mos_dev);
+	}
+	splx(s);
+
+	usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->mos_udev,
+			   &sc->mos_dev);
+
+	return (0);
+}
+
+
+int
+mos_activate(struct device *self, enum devact act)
+{
+	struct mos_softc *sc = (struct mos_softc *)self;
+
+	DPRINTFN(2,("%s: %s: enter\n", sc->mos_dev.dv_xname, __func__));
+
+	switch (act) {
+	case DVACT_ACTIVATE:
+		break;
+
+	case DVACT_DEACTIVATE:
+		sc->mos_dying = 1;
+		break;
+	}
+	return (0);
+}
+
+struct mbuf *
+mos_newbuf(void)
+{
+	struct mbuf		*m;
+
+	MGETHDR(m, M_DONTWAIT, MT_DATA);
+	if (m == NULL)
+		return (NULL);
+
+	MCLGET(m, M_DONTWAIT);
+	if (!(m->m_flags & M_EXT)) {
+		m_freem(m);
+		return (NULL);
+	}
+
+	m->m_len = m->m_pkthdr.len = MCLBYTES;
+	m_adj(m, ETHER_ALIGN);
+
+	return (m);
+}
+
+int
+mos_rx_list_init(struct mos_softc *sc)
+{
+	struct mos_cdata	*cd;
+	struct mos_chain	*c;
+	int 			i;
+
+	DPRINTF(("%s: %s: enter\n", sc->mos_dev.dv_xname, __func__));
+
+	cd = &sc->mos_cdata;
+	for (i = 0; i < MOS_RX_LIST_CNT; i++) {
+		c = &cd->mos_rx_chain[i];
+		c->mos_sc = sc;
+		c->mos_idx = i;
+		c->mos_mbuf = NULL;
+		if (c->mos_xfer == NULL) {
+			c->mos_xfer = usbd_alloc_xfer(sc->mos_udev);
+			if (c->mos_xfer == NULL)
+				return (ENOBUFS);
+			c->mos_buf = usbd_alloc_buffer(c->mos_xfer,
+			    sc->mos_bufsz);
+			if (c->mos_buf == NULL) {
+				usbd_free_xfer(c->mos_xfer);
+				return (ENOBUFS);
+			}
+		}
+	}
+
+	return (0);
+}
+
+int
+mos_tx_list_init(struct mos_softc *sc)
+{
+	struct mos_cdata	*cd;
+	struct mos_chain	*c;
+	int			i;
+
+	DPRINTF(("%s: %s: enter\n", sc->mos_dev.dv_xname, __func__));
+
+	cd = &sc->mos_cdata;
+	for (i = 0; i < MOS_TX_LIST_CNT; i++) {
+		c = &cd->mos_tx_chain[i];
+		c->mos_sc = sc;
+		c->mos_idx = i;
+		c->mos_mbuf = NULL;
+		if (c->mos_xfer == NULL) {
+			c->mos_xfer = usbd_alloc_xfer(sc->mos_udev);
+			if (c->mos_xfer == NULL)
+				return (ENOBUFS);
+			c->mos_buf = usbd_alloc_buffer(c->mos_xfer,
+			    sc->mos_bufsz);
+			if (c->mos_buf == NULL) {
+				usbd_free_xfer(c->mos_xfer);
+				return (ENOBUFS);
+			}
+		}
+	}
+
+	return (0);
+}
+
+/*
+ * A frame has been uploaded: pass the resulting mbuf chain up to
+ * the higher level protocols.
+ */
+void
+mos_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
+{
+	struct mos_chain	*c = (struct mos_chain *)priv;
+	struct mos_softc	*sc = c->mos_sc;
+	struct ifnet		*ifp = GET_IFP(sc);
+	u_char			*buf = c->mos_buf;
+	u_int32_t		total_len;
+	u_int16_t		pktlen = 0;
+	struct mbuf		*m;
+	int			s;
+
+	DPRINTFN(10,("%s: %s: enter\n", sc->mos_dev.dv_xname,__func__));
+
+	if (sc->mos_dying)
+		return;
+
+	if (!(ifp->if_flags & IFF_RUNNING))
+		return;
+
+	if (status != USBD_NORMAL_COMPLETION) {
+		if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
+			return;
+		if (usbd_ratecheck(&sc->mos_rx_notice)) {
+			printf("%s: usb errors on rx: %s\n",
+			    sc->mos_dev.dv_xname, usbd_errstr(status));
+		}
+		if (status == USBD_STALLED)
+			usbd_clear_endpoint_stall_async(sc->mos_ep[MOS_ENDPT_RX]);
+		goto done;
+	}
+
+	usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
+
+	if (total_len <= 1)
+		goto done;
+
+	/* status byte at the end */
+	pktlen = total_len - 1;
+
+	/* 0x20 seems to indicate that the packet is OK */
+	if ( ( pktlen < sizeof(struct ether_header) )
+	    || ( buf[pktlen] != 0x20 ) ) {
+		ifp->if_ierrors++;
+		goto done;
+	}
+
+	m = mos_newbuf();
+	if (m == NULL) {
+		ifp->if_ierrors++;
+		goto done;
+	}
+
+	ifp->if_ipackets++;
+	m->m_pkthdr.rcvif = ifp;
+	m->m_pkthdr.len = m->m_len = pktlen;
+
+	memcpy(mtod(m, char *), buf, pktlen);
+
+	/* push the packet up */
+	s = splnet();
+#if NBPFILTER > 0
+	if (ifp->if_bpf)
+		bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_IN);
+#endif
+
+	ether_input_mbuf(ifp, m);
+
+	splx(s);
+
+done:
+	memset(c->mos_buf, 0, sc->mos_bufsz);
+
+	/* Setup new transfer. */
+	usbd_setup_xfer(xfer, sc->mos_ep[MOS_ENDPT_RX],
+	    c, c->mos_buf, sc->mos_bufsz,
+	    USBD_SHORT_XFER_OK | USBD_NO_COPY,
+	    USBD_NO_TIMEOUT, mos_rxeof);
+	usbd_transfer(xfer);
+
+	DPRINTFN(10,("%s: %s: start rx\n", sc->mos_dev.dv_xname, __func__));
+
+	return;
+}
+
+/*
+ * A frame was downloaded to the chip. It's safe for us to clean up
+ * the list buffers.
+ */
+
+void
+mos_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
+{
+	struct mos_softc	*sc;
+	struct mos_chain	*c;
+	struct ifnet		*ifp;
+	int			s;
+
+	c = priv;
+	sc = c->mos_sc;
+	ifp = &sc->arpcom.ac_if;
+
+	if (sc->mos_dying)
+		return;
+
+	s = splnet();
+
+	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", sc->mos_dev.dv_xname,
+		    usbd_errstr(status));
+		if (status == USBD_STALLED)
+			usbd_clear_endpoint_stall_async(sc->mos_ep[MOS_ENDPT_TX]);
+		splx(s);
+		return;
+	}
+
+	ifp->if_timer = 0;
+	ifp->if_flags &= ~IFF_OACTIVE;
+
+	m_freem(c->mos_mbuf);
+	c->mos_mbuf = NULL;
+
+	if (IFQ_IS_EMPTY(&ifp->if_snd) == 0)
+		mos_start(ifp);
+
+	ifp->if_opackets++;
+	splx(s);
+	return;
+}
+
+void
+mos_tick(void *xsc)
+{
+	struct mos_softc *sc = xsc;
+
+	if (sc == NULL)
+		return;
+
+	DPRINTFN(0xff, ("%s: %s: enter\n", sc->mos_dev.dv_xname,
+			__func__));
+
+	if (sc->mos_dying)
+		return;
+
+	/* Perform periodic stuff in process context */
+	usb_add_task(sc->mos_udev, &sc->mos_tick_task);
+
+}
+
+void
+mos_tick_task(void *xsc)
+{
+	int			s;
+	struct mos_softc	*sc;
+	struct ifnet		*ifp;
+	struct mii_data		*mii;
+
+	sc = xsc;
+
+	if (sc == NULL)
+		return;
+
+	if (sc->mos_dying)
+		return;
+
+	ifp = GET_IFP(sc);
+	mii = GET_MII(sc);
+	if (mii == NULL)
+		return;
+
+	s = splnet();
+
+	mii_tick(mii);
+	if (!sc->mos_link && mii->mii_media_status & IFM_ACTIVE &&
+	    IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
+		DPRINTF(("%s: %s: got link\n",
+			 sc->mos_dev.dv_xname, __func__));
+		sc->mos_link++;
+		if (IFQ_IS_EMPTY(&ifp->if_snd) == 0)
+			   mos_start(ifp);
+	}
+
+	timeout_add_sec(&sc->mos_stat_ch, 1);
+
+	splx(s);
+}
+
+int
+mos_encap(struct mos_softc *sc, struct mbuf *m, int idx)
+{
+	struct mos_chain	*c;
+	usbd_status		err;
+	int			length;
+
+	c = &sc->mos_cdata.mos_tx_chain[idx];
+
+	m_copydata(m, 0, m->m_pkthdr.len, c->mos_buf);
+	length = m->m_pkthdr.len;
+
+	c->mos_mbuf = m;
+
+	usbd_setup_xfer(c->mos_xfer, sc->mos_ep[MOS_ENDPT_TX],
+	    c, c->mos_buf, length, USBD_FORCE_SHORT_XFER | USBD_NO_COPY,
+	    10000, mos_txeof);
+
+	/* Transmit */
+	err = usbd_transfer(c->mos_xfer);
+	if (err != USBD_IN_PROGRESS) {
+		mos_stop(sc);
+		return(EIO);
+	}
+
+	sc->mos_cdata.mos_tx_cnt++;
+
+	return(0);
+}
+
+void
+mos_start(struct ifnet *ifp)
+{
+	struct mos_softc	*sc;
+	struct mbuf		*m_head = NULL;
+
+	sc = ifp->if_softc;
+
+	if (!sc->mos_link)
+		return;
+
+	if (ifp->if_flags & IFF_OACTIVE)
+		return;
+
+	IFQ_POLL(&ifp->if_snd, m_head);
+	if (m_head == NULL)
+		return;
+
+	if (mos_encap(sc, m_head, 0)) {
+		ifp->if_flags |= IFF_OACTIVE;
+		return;
+	}
+	IFQ_DEQUEUE(&ifp->if_snd, m_head);
+
+	/*
+	 * If there's a BPF listener, bounce a copy of this frame
+	 * to him.
+	 */
+#if NBPFILTER > 0
+	if (ifp->if_bpf)
+		bpf_mtap(ifp->if_bpf, m_head, BPF_DIRECTION_OUT);
+#endif
+
+	ifp->if_flags |= IFF_OACTIVE;
+
+	/*
+	 * Set a timeout in case the chip goes out to lunch.
+	 */
+	ifp->if_timer = 5;
+
+	return;
+}
+
+void
+mos_init(void *xsc)
+{
+	struct mos_softc	*sc = xsc;
+	struct ifnet		*ifp = &sc->arpcom.ac_if;
+	struct mos_chain	*c;
+	usbd_status		err;
+	u_int8_t		rxmode;
+	int			i, s;
+
+	s = splnet();
+
+	/*
+	 * Cancel pending I/O and free all RX/TX buffers.
+	 */
+	mos_reset(sc);
+
+	/*
+	 * Write MAC address
+	 */
+	mos_writemac(sc, sc->arpcom.ac_enaddr);
+
+	/* Init RX ring. */
+	if (mos_rx_list_init(sc) == ENOBUFS) {
+		printf("%s: rx list init failed\n", sc->mos_dev.dv_xname);
+		splx(s);
+		return;
+	}
+
+	/* Init TX ring. */
+	if (mos_tx_list_init(sc) == ENOBUFS) {
+		printf("%s: tx list init failed\n", sc->mos_dev.dv_xname);
+		splx(s);
+		return;
+	}
+
+	/* Set transmitter IPG values */
+	mos_reg_write_1(sc, MOS_IPG0, sc->mos_ipgs[0]);
+	mos_reg_write_1(sc, MOS_IPG1, sc->mos_ipgs[1]);
+
+	/* Enable receiver and transmitter, bridge controls speed/duplex mode */
+	rxmode = mos_reg_read_1(sc, MOS_CTL);
+	rxmode |= MOS_CTL_RX_ENB | MOS_CTL_TX_ENB | MOS_CTL_BS_ENB;
+	rxmode &= ~(MOS_CTL_SLEEP);
+
+	/* If we want promiscuous mode, set the allframes bit. */
+	if (ifp->if_flags & IFF_PROMISC)
+		rxmode |= MOS_CTL_RX_PROMISC;
+
+	/* XXX: broadcast mode? */
+
+	mos_reg_write_1(sc, MOS_CTL, rxmode);
+
+	/* Load the multicast filter. */
+	mos_setmulti(sc);
+
+	mii_mediachg(GET_MII(sc));
+
+	/* Open RX and TX pipes. */
+	err = usbd_open_pipe(sc->mos_iface, sc->mos_ed[MOS_ENDPT_RX],
+	    USBD_EXCLUSIVE_USE, &sc->mos_ep[MOS_ENDPT_RX]);
+	if (err) {
+		printf("%s: open rx pipe failed: %s\n",
+		    sc->mos_dev.dv_xname, usbd_errstr(err));
+		splx(s);
+		return;
+	}
+
+	err = usbd_open_pipe(sc->mos_iface, sc->mos_ed[MOS_ENDPT_TX],
+	    USBD_EXCLUSIVE_USE, &sc->mos_ep[MOS_ENDPT_TX]);
+	if (err) {
+		printf("%s: open tx pipe failed: %s\n",
+		    sc->mos_dev.dv_xname, usbd_errstr(err));
+		splx(s);
+		return;
+	}
+
+	/* Start up the receive pipe. */
+	for (i = 0; i < MOS_RX_LIST_CNT; i++) {
+		c = &sc->mos_cdata.mos_rx_chain[i];
+		usbd_setup_xfer(c->mos_xfer, sc->mos_ep[MOS_ENDPT_RX],
+		    c, c->mos_buf, sc->mos_bufsz,
+		    USBD_SHORT_XFER_OK | USBD_NO_COPY,
+		    USBD_NO_TIMEOUT, mos_rxeof);
+		usbd_transfer(c->mos_xfer);
+	}
+
+	ifp->if_flags |= IFF_RUNNING;
+	ifp->if_flags &= ~IFF_OACTIVE;
+
+	splx(s);
+
+	timeout_add_sec(&sc->mos_stat_ch, 1);
+	return;
+}
+
+int
+mos_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
+{
+	struct mos_softc	*sc = ifp->if_softc;
+	struct ifreq		*ifr = (struct ifreq *)data;
+	struct ifaddr		*ifa = (struct ifaddr *)data;
+	struct mii_data		*mii;
+	u_int8_t		rxmode;
+	int			s, error = 0;
+
+	s = splnet();
+
+	switch(cmd) {
+	case SIOCSIFADDR:
+		ifp->if_flags |= IFF_UP;
+		if (!(ifp->if_flags & IFF_RUNNING))
+			mos_init(sc);
+#ifdef INET
+		if (ifa->ifa_addr->sa_family == AF_INET)
+			arp_ifinit(&sc->arpcom, ifa);
+#endif
+		break;
+
+	case SIOCSIFMTU:
+		if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ifp->if_hardmtu)
+			error = EINVAL;
+		else if (ifp->if_mtu != ifr->ifr_mtu)
+			ifp->if_mtu = ifr->ifr_mtu;
+		break;
+
+	case SIOCSIFFLAGS:
+		if (ifp->if_flags & IFF_UP) {
+			if (ifp->if_flags & IFF_RUNNING &&
+			    ifp->if_flags & IFF_PROMISC &&
+			    !(sc->mos_if_flags & IFF_PROMISC)) {
+				rxmode = mos_reg_read_1(sc, MOS_CTL);
+				rxmode |= MOS_CTL_RX_PROMISC;
+				mos_reg_write_1(sc, MOS_CTL, rxmode);
+				mos_setmulti(sc);
+			} else if (ifp->if_flags & IFF_RUNNING &&
+			    !(ifp->if_flags & IFF_PROMISC) &&
+			    !(sc->mos_if_flags & IFF_PROMISC)) {
+				rxmode = mos_reg_read_1(sc, MOS_CTL);
+				rxmode |= MOS_CTL_RX_PROMISC;
+				mos_reg_write_1(sc, MOS_CTL, rxmode);
+				mos_setmulti(sc);
+			} else if (!(ifp->if_flags & IFF_RUNNING))
+				mos_init(sc);
+		} else {
+			if (ifp->if_flags & IFF_RUNNING)
+				mos_stop(sc);
+		}
+		sc->mos_if_flags = ifp->if_flags;
+		break;
+	case SIOCADDMULTI:
+	case SIOCDELMULTI:
+		error = (cmd == SIOCADDMULTI) ?
+		    ether_addmulti(ifr, &sc->arpcom) :
+		    ether_delmulti(ifr, &sc->arpcom);
+
+		if (error == ENETRESET) {
+			/*
+			 * Multicast list has changed; set the hardware
+			 * filter accordingly.
+			 */
+			if (ifp->if_flags & IFF_RUNNING)
+				mos_setmulti(sc);
+			error = 0;
+		}
+		break;
+	case SIOCGIFMEDIA:
+	case SIOCSIFMEDIA:
+		mii = GET_MII(sc);
+		error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
+		break;
+
+	default:
+		error = ether_ioctl(ifp, &sc->arpcom, cmd, data);
+	}
+
+	splx(s);
+	return(error);
+}
+
+void
+mos_watchdog(struct ifnet *ifp)
+{
+	struct mos_softc	*sc;
+	struct mos_chain	*c;
+	usbd_status		stat;
+	int			s;
+
+	sc = ifp->if_softc;
+
+	ifp->if_oerrors++;
+	printf("%s: watchdog timeout\n", sc->mos_dev.dv_xname);
+
+	s = splusb();
+	c = &sc->mos_cdata.mos_tx_chain[0];
+	usbd_get_xfer_status(c->mos_xfer, NULL, NULL, NULL, &stat);
+	mos_txeof(c->mos_xfer, c, stat);
+
+	if (!IFQ_IS_EMPTY(&ifp->if_snd))
+		mos_start(ifp);
+	splx(s);
+}
+
+
+/*
+ * Stop the adapter and free any mbufs allocated to the
+ * RX and TX lists.
+ */
+void
+mos_stop(struct mos_softc *sc)
+{
+	usbd_status		err;
+	struct ifnet		*ifp;
+	int			i;
+
+	mos_reset(sc);
+
+	ifp = &sc->arpcom.ac_if;
+	ifp->if_timer = 0;
+	ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
+
+	timeout_del(&sc->mos_stat_ch);
+
+	/* Stop transfers. */
+	if (sc->mos_ep[MOS_ENDPT_RX] != NULL) {
+		err = usbd_abort_pipe(sc->mos_ep[MOS_ENDPT_RX]);
+		if (err) {
+			printf("%s: abort rx pipe failed: %s\n",
+			    sc->mos_dev.dv_xname, usbd_errstr(err));
+		}
+		err = usbd_close_pipe(sc->mos_ep[MOS_ENDPT_RX]);
+		if (err) {
+			printf("%s: close rx pipe failed: %s\n",
+			    sc->mos_dev.dv_xname, usbd_errstr(err));
+		}
+		sc->mos_ep[MOS_ENDPT_RX] = NULL;
+	}
+
+	if (sc->mos_ep[MOS_ENDPT_TX] != NULL) {
+		err = usbd_abort_pipe(sc->mos_ep[MOS_ENDPT_TX]);
+		if (err) {
+			printf("%s: abort tx pipe failed: %s\n",
+			    sc->mos_dev.dv_xname, usbd_errstr(err));
+		}
+		err = usbd_close_pipe(sc->mos_ep[MOS_ENDPT_TX]);
+		if (err) {
+			printf("%s: close tx pipe failed: %s\n",
+			    sc->mos_dev.dv_xname, usbd_errstr(err));
+		}
+		sc->mos_ep[MOS_ENDPT_TX] = NULL;
+	}
+
+	if (sc->mos_ep[MOS_ENDPT_INTR] != NULL) {
+		err = usbd_abort_pipe(sc->mos_ep[MOS_ENDPT_INTR]);
+		if (err) {
+			printf("%s: abort intr pipe failed: %s\n",
+			    sc->mos_dev.dv_xname, usbd_errstr(err));
+		}
+		err = usbd_close_pipe(sc->mos_ep[MOS_ENDPT_INTR]);
+		if (err) {
+			printf("%s: close intr pipe failed: %s\n",
+			    sc->mos_dev.dv_xname, usbd_errstr(err));
+		}
+		sc->mos_ep[MOS_ENDPT_INTR] = NULL;
+	}
+
+	/* Free RX resources. */
+	for (i = 0; i < MOS_RX_LIST_CNT; i++) {
+		if (sc->mos_cdata.mos_rx_chain[i].mos_mbuf != NULL) {
+			m_freem(sc->mos_cdata.mos_rx_chain[i].mos_mbuf);
+			sc->mos_cdata.mos_rx_chain[i].mos_mbuf = NULL;
+		}
+		if (sc->mos_cdata.mos_rx_chain[i].mos_xfer != NULL) {
+			usbd_free_xfer(sc->mos_cdata.mos_rx_chain[i].mos_xfer);
+			sc->mos_cdata.mos_rx_chain[i].mos_xfer = NULL;
+		}
+	}
+
+	/* Free TX resources. */
+	for (i = 0; i < MOS_TX_LIST_CNT; i++) {
+		if (sc->mos_cdata.mos_tx_chain[i].mos_mbuf != NULL) {
+			m_freem(sc->mos_cdata.mos_tx_chain[i].mos_mbuf);
+			sc->mos_cdata.mos_tx_chain[i].mos_mbuf = NULL;
+		}
+		if (sc->mos_cdata.mos_tx_chain[i].mos_xfer != NULL) {
+			usbd_free_xfer(sc->mos_cdata.mos_tx_chain[i].mos_xfer);
+			sc->mos_cdata.mos_tx_chain[i].mos_xfer = NULL;
+		}
+	}
+
+	sc->mos_link = 0;
+}
+
diff --git a/sys/dev/usb/if_mosreg.h b/sys/dev/usb/if_mosreg.h
new file mode 100644
index 00000000000..0d1ae2a7c74
--- /dev/null
+++ b/sys/dev/usb/if_mosreg.h
@@ -0,0 +1,191 @@
+/*
+ * Copyright (c) 2008 Johann Christian Rode <jcrode@gmx.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * Copyright (c) 1997, 1998, 1999, 2000-2003
+ *	Bill Paul <wpaul@windriver.com>.  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 Ravikanth.
+ * 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 Bill Paul 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 Bill Paul, THE VOICES IN HIS HEAD OR
+ * THE 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.
+ *
+ */
+
+/*
+ * Register definitions for the Moschip MCS7x30 ethernet controller.
+ */
+#define MOS_MCAST_TABLE 	0x00
+#define MOS_IPG0		0x08
+#define MOS_IPG1		0x09
+#define MOS_PHY_DATA0		0x0a
+#define MOS_PHY_DATA1		0x0b
+#define MOS_PHY_CTL		0x0c
+#define MOS_PHY_STS		0x0d
+#define MOS_PHY_DATA		MOS_PHY_DATA0
+#define MOS_CTL			0x0e
+#define MOS_MAC0		0x0f
+#define MOS_MAC1		0x10
+#define MOS_MAC2		0x11
+#define MOS_MAC3		0x12
+#define MOS_MAC4		0x13
+#define MOS_MAC5		0x14
+#define MOS_MAC			MOS_MAC0
+/* apparently only available on hardware rev. C */
+#define MOS_PAUSE_TRHD		0x16
+
+#define MOS_PHYCTL_PHYADDR	0x1f
+#define MOS_PHYCTL_WRITE	0x20
+#define MOS_PHYCTL_READ		0x40
+
+#define MOS_PHYSTS_PHYREG	0x1f
+#define MOS_PHYSTS_READY	0x40
+#define MOS_PHYSTS_PENDING	0x80
+
+#define MOS_CTL_RX_PROMISC	0x01
+#define MOS_CTL_ALLMULTI	0x02
+#define MOS_CTL_SLEEP		0x04
+#define MOS_CTL_TX_ENB		0x08
+/* 
+ * The documentation calls this bit 'reserved', but in the FreeBSD driver 
+ * provided by the vendor, this enables the receiver.
+ */
+#define MOS_CTL_RX_ENB		0x10
+#define MOS_CTL_FDX_ENB		0x20
+/* 0 = 10 Mbps, 1 = 100 Mbps */
+#define MOS_CTL_SPEEDSEL	0x40
+/* 0 = PHY controls speed/duplex mode, 1 = bridge controls speed/duplex mode */
+#define MOS_CTL_BS_ENB		0x80
+
+#define MOS_PAUSE_TRHD_DEFAULT	0
+#define MOS_PAUSE_REWRITES	3
+
+#define MOS_TIMEOUT		1000
+
+#define MOS_RX_LIST_CNT		1
+#define MOS_TX_LIST_CNT		1
+
+#define MOS_MIN_BUFSZ		2048
+#define MOS_MAX_BUFSZ		16384
+
+/*
+ * USB endpoints.
+ */
+#define MOS_ENDPT_RX		0
+#define MOS_ENDPT_TX		1
+#define MOS_ENDPT_INTR		2
+#define MOS_ENDPT_MAX		3
+
+/*
+ * USB vendor requests.
+ */
+#define MOS_UR_READREG		0x0e
+#define MOS_UR_WRITEREG		0x0d
+
+#define MOS_CONFIG_NO		1
+#define MOS_IFACE_IDX		0
+
+struct mos_type {
+	struct usb_devno	mos_dev;
+	u_int16_t		mos_flags;
+#define MCS7730	0x0001		/* MCS7730 */
+#define MCS7830	0x0002		/* MCS7830 */
+};
+
+#define MOS_INC(x, y)           (x) = (x + 1) % y
+
+struct mos_softc;
+
+struct mos_chain {
+	struct mos_softc	*mos_sc;
+	usbd_xfer_handle	mos_xfer;
+	char			*mos_buf;
+	struct mbuf		*mos_mbuf;
+	int			mos_accum;
+	int			mos_idx;
+};
+
+struct mos_cdata {
+	struct mos_chain	mos_tx_chain[MOS_TX_LIST_CNT];
+	struct mos_chain	mos_rx_chain[MOS_RX_LIST_CNT];
+	int			mos_tx_prod;
+	int			mos_tx_cons;
+	int			mos_tx_cnt;
+	int			mos_rx_prod;
+};
+
+struct mos_softc {
+	struct device		mos_dev;
+#define GET_MII(sc) (&(sc)->mos_mii)
+	struct arpcom		arpcom;
+#define GET_IFP(sc) (&(sc)->arpcom.ac_if)
+	struct mii_data		mos_mii;
+	usbd_device_handle	mos_udev;
+	usbd_interface_handle	mos_iface;
+
+	u_int16_t		mos_flags;
+
+	int			mos_ed[MOS_ENDPT_MAX];
+	usbd_pipe_handle	mos_ep[MOS_ENDPT_MAX];
+	int			mos_unit;
+	int			mos_if_flags;
+	struct mos_cdata	mos_cdata;
+	struct timeout		mos_stat_ch;
+
+	int			mos_refcnt;
+	char			mos_dying;
+	char			mos_attached;
+
+	int			mos_link;
+	unsigned char		mos_ipgs[2];
+	unsigned char 		mos_phyaddrs[2];
+	struct timeval		mos_rx_notice;
+
+	u_int16_t		mos_tspeed;
+	u_int16_t		mos_maxpacket;
+
+	struct ifmedia		mos_ifmedia;
+
+	struct usb_task		mos_tick_task;
+	struct usb_task		mos_stop_task;
+
+	struct rwlock		mos_mii_lock;
+
+	u_int			mos_bufsz;
+};
+