[PATCH 3/4] Imported files for driver usb_ethernet for Raspberry Pi.

Deval Shah deval.maker at gmail.com
Fri Aug 19 08:46:52 UTC 2016


---
 freebsd/sys/dev/usb/net/if_smsc.c      | 1863 ++++++++++++++++++++++++++++++++
 freebsd/sys/dev/usb/net/if_smscreg.h   |  277 +++++
 freebsd/sys/dev/usb/net/usb_ethernet.c |  647 +++++++++++
 freebsd/sys/dev/usb/net/usb_ethernet.h |  127 +++
 libbsd.py                              |    8 +-
 libbsd.txt                             |    1 +
 libbsd_waf.py                          |    2 +
 7 files changed, 2922 insertions(+), 3 deletions(-)
 create mode 100644 freebsd/sys/dev/usb/net/if_smsc.c
 create mode 100644 freebsd/sys/dev/usb/net/if_smscreg.h
 create mode 100644 freebsd/sys/dev/usb/net/usb_ethernet.c
 create mode 100644 freebsd/sys/dev/usb/net/usb_ethernet.h

diff --git a/freebsd/sys/dev/usb/net/if_smsc.c b/freebsd/sys/dev/usb/net/if_smsc.c
new file mode 100644
index 0000000..3bdd35a
--- /dev/null
+++ b/freebsd/sys/dev/usb/net/if_smsc.c
@@ -0,0 +1,1863 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+/*-
+ * Copyright (c) 2012
+ *	Ben Gray <bgray at freebsd.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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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>
+__FBSDID("$FreeBSD$");
+
+/*
+ * SMSC LAN9xxx devices (http://www.smsc.com/)
+ * 
+ * The LAN9500 & LAN9500A devices are stand-alone USB to Ethernet chips that
+ * support USB 2.0 and 10/100 Mbps Ethernet.
+ *
+ * The LAN951x devices are an integrated USB hub and USB to Ethernet adapter.
+ * The driver only covers the Ethernet part, the standard USB hub driver
+ * supports the hub part.
+ *
+ * This driver is closely modelled on the Linux driver written and copyrighted
+ * by SMSC.
+ *
+ *
+ *
+ *
+ * H/W TCP & UDP Checksum Offloading
+ * ---------------------------------
+ * The chip supports both tx and rx offloading of UDP & TCP checksums, this
+ * feature can be dynamically enabled/disabled.  
+ *
+ * RX checksuming is performed across bytes after the IPv4 header to the end of
+ * the Ethernet frame, this means if the frame is padded with non-zero values
+ * the H/W checksum will be incorrect, however the rx code compensates for this.
+ *
+ * TX checksuming is more complicated, the device requires a special header to
+ * be prefixed onto the start of the frame which indicates the start and end
+ * positions of the UDP or TCP frame.  This requires the driver to manually
+ * go through the packet data and decode the headers prior to sending.
+ * On Linux they generally provide cues to the location of the csum and the
+ * area to calculate it over, on FreeBSD we seem to have to do it all ourselves,
+ * hence this is not as optimal and therefore h/w tX checksum is currently not
+ * implemented.
+ *
+ */
+#include <sys/stdint.h>
+#include <sys/stddef.h>
+#include <rtems/bsd/sys/param.h>
+#include <sys/queue.h>
+#include <sys/types.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/bus.h>
+#include <sys/module.h>
+#include <rtems/bsd/sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/condvar.h>
+#include <sys/socket.h>
+#include <sys/sysctl.h>
+#include <sys/sx.h>
+#include <rtems/bsd/sys/unistd.h>
+#include <sys/callout.h>
+#include <sys/malloc.h>
+#include <sys/priv.h>
+#include <sys/random.h>
+
+#include <net/if.h>
+#include <net/if_var.h>
+
+#include <netinet/in.h>
+#include <netinet/ip.h>
+
+#include <rtems/bsd/local/opt_platform.h>
+
+#ifdef FDT
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+#endif
+
+#include <dev/usb/usb.h>
+#include <dev/usb/usbdi.h>
+#include <dev/usb/usbdi_util.h>
+#include <rtems/bsd/local/usbdevs.h>
+
+#define	USB_DEBUG_VAR smsc_debug
+#include <dev/usb/usb_debug.h>
+#include <dev/usb/usb_process.h>
+
+#include <dev/usb/net/usb_ethernet.h>
+
+#include <dev/usb/net/if_smscreg.h>
+
+#ifdef USB_DEBUG
+static int smsc_debug = 0;
+
+SYSCTL_NODE(_hw_usb, OID_AUTO, smsc, CTLFLAG_RW, 0, "USB smsc");
+SYSCTL_INT(_hw_usb_smsc, OID_AUTO, debug, CTLFLAG_RWTUN, &smsc_debug, 0,
+    "Debug level");
+#endif
+
+/*
+ * Various supported device vendors/products.
+ */
+static const struct usb_device_id smsc_devs[] = {
+#define	SMSC_DEV(p,i) { USB_VPI(USB_VENDOR_SMC2, USB_PRODUCT_SMC2_##p, i) }
+	SMSC_DEV(LAN89530_ETH, 0),
+	SMSC_DEV(LAN9500_ETH, 0),
+	SMSC_DEV(LAN9500_ETH_2, 0),
+	SMSC_DEV(LAN9500A_ETH, 0),
+	SMSC_DEV(LAN9500A_ETH_2, 0),
+	SMSC_DEV(LAN9505_ETH, 0),
+	SMSC_DEV(LAN9505A_ETH, 0),
+	SMSC_DEV(LAN9514_ETH, 0),
+	SMSC_DEV(LAN9514_ETH_2, 0),
+	SMSC_DEV(LAN9530_ETH, 0),
+	SMSC_DEV(LAN9730_ETH, 0),
+	SMSC_DEV(LAN9500_SAL10, 0),
+	SMSC_DEV(LAN9505_SAL10, 0),
+	SMSC_DEV(LAN9500A_SAL10, 0),
+	SMSC_DEV(LAN9505A_SAL10, 0),
+	SMSC_DEV(LAN9514_SAL10, 0),
+	SMSC_DEV(LAN9500A_HAL, 0),
+	SMSC_DEV(LAN9505A_HAL, 0),
+#undef SMSC_DEV
+};
+
+
+#ifdef USB_DEBUG
+#define smsc_dbg_printf(sc, fmt, args...) \
+	do { \
+		if (smsc_debug > 0) \
+			device_printf((sc)->sc_ue.ue_dev, "debug: " fmt, ##args); \
+	} while(0)
+#else
+#define smsc_dbg_printf(sc, fmt, args...)
+#endif
+
+#define smsc_warn_printf(sc, fmt, args...) \
+	device_printf((sc)->sc_ue.ue_dev, "warning: " fmt, ##args)
+
+#define smsc_err_printf(sc, fmt, args...) \
+	device_printf((sc)->sc_ue.ue_dev, "error: " fmt, ##args)
+	
+
+#define ETHER_IS_ZERO(addr) \
+	(!(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]))
+	
+#define ETHER_IS_VALID(addr) \
+	(!ETHER_IS_MULTICAST(addr) && !ETHER_IS_ZERO(addr))
+	
+static device_probe_t smsc_probe;
+static device_attach_t smsc_attach;
+static device_detach_t smsc_detach;
+
+static usb_callback_t smsc_bulk_read_callback;
+static usb_callback_t smsc_bulk_write_callback;
+
+static miibus_readreg_t smsc_miibus_readreg;
+static miibus_writereg_t smsc_miibus_writereg;
+static miibus_statchg_t smsc_miibus_statchg;
+
+#if __FreeBSD_version > 1000000
+static int smsc_attach_post_sub(struct usb_ether *ue);
+#endif
+static uether_fn_t smsc_attach_post;
+static uether_fn_t smsc_init;
+static uether_fn_t smsc_stop;
+static uether_fn_t smsc_start;
+static uether_fn_t smsc_tick;
+static uether_fn_t smsc_setmulti;
+static uether_fn_t smsc_setpromisc;
+
+static int	smsc_ifmedia_upd(struct ifnet *);
+static void	smsc_ifmedia_sts(struct ifnet *, struct ifmediareq *);
+
+static int smsc_chip_init(struct smsc_softc *sc);
+static int smsc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
+
+static const struct usb_config smsc_config[SMSC_N_TRANSFER] = {
+
+	[SMSC_BULK_DT_WR] = {
+		.type = UE_BULK,
+		.endpoint = UE_ADDR_ANY,
+		.direction = UE_DIR_OUT,
+		.frames = 16,
+		.bufsize = 16 * (MCLBYTES + 16),
+		.flags = {.pipe_bof = 1,.force_short_xfer = 1,},
+		.callback = smsc_bulk_write_callback,
+		.timeout = 10000,	/* 10 seconds */
+	},
+
+	[SMSC_BULK_DT_RD] = {
+		.type = UE_BULK,
+		.endpoint = UE_ADDR_ANY,
+		.direction = UE_DIR_IN,
+		.bufsize = 20480,	/* bytes */
+		.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
+		.callback = smsc_bulk_read_callback,
+		.timeout = 0,	/* no timeout */
+	},
+
+	/* The SMSC chip supports an interrupt endpoints, however they aren't
+	 * needed as we poll on the MII status.
+	 */
+};
+
+static const struct usb_ether_methods smsc_ue_methods = {
+	.ue_attach_post = smsc_attach_post,
+#if __FreeBSD_version > 1000000
+	.ue_attach_post_sub = smsc_attach_post_sub,
+#endif
+	.ue_start = smsc_start,
+	.ue_ioctl = smsc_ioctl,
+	.ue_init = smsc_init,
+	.ue_stop = smsc_stop,
+	.ue_tick = smsc_tick,
+	.ue_setmulti = smsc_setmulti,
+	.ue_setpromisc = smsc_setpromisc,
+	.ue_mii_upd = smsc_ifmedia_upd,
+	.ue_mii_sts = smsc_ifmedia_sts,
+};
+
+/**
+ *	smsc_read_reg - Reads a 32-bit register on the device
+ *	@sc: driver soft context
+ *	@off: offset of the register
+ *	@data: pointer a value that will be populated with the register value
+ *	
+ *	LOCKING:
+ *	The device lock must be held before calling this function.
+ *
+ *	RETURNS:
+ *	0 on success, a USB_ERR_?? error code on failure.
+ */
+static int
+smsc_read_reg(struct smsc_softc *sc, uint32_t off, uint32_t *data)
+{
+	struct usb_device_request req;
+	uint32_t buf;
+	usb_error_t err;
+
+	SMSC_LOCK_ASSERT(sc, MA_OWNED);
+
+	req.bmRequestType = UT_READ_VENDOR_DEVICE;
+	req.bRequest = SMSC_UR_READ_REG;
+	USETW(req.wValue, 0);
+	USETW(req.wIndex, off);
+	USETW(req.wLength, 4);
+
+	err = uether_do_request(&sc->sc_ue, &req, &buf, 1000);
+	if (err != 0)
+		smsc_warn_printf(sc, "Failed to read register 0x%0x\n", off);
+
+	*data = le32toh(buf);
+	
+	return (err);
+}
+
+/**
+ *	smsc_write_reg - Writes a 32-bit register on the device
+ *	@sc: driver soft context
+ *	@off: offset of the register
+ *	@data: the 32-bit value to write into the register
+ *	
+ *	LOCKING:
+ *	The device lock must be held before calling this function.
+ *
+ *	RETURNS:
+ *	0 on success, a USB_ERR_?? error code on failure.
+ */
+static int
+smsc_write_reg(struct smsc_softc *sc, uint32_t off, uint32_t data)
+{
+	struct usb_device_request req;
+	uint32_t buf;
+	usb_error_t err;
+
+	SMSC_LOCK_ASSERT(sc, MA_OWNED);
+	
+	buf = htole32(data);
+
+	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
+	req.bRequest = SMSC_UR_WRITE_REG;
+	USETW(req.wValue, 0);
+	USETW(req.wIndex, off);
+	USETW(req.wLength, 4);
+
+	err = uether_do_request(&sc->sc_ue, &req, &buf, 1000);
+	if (err != 0)
+		smsc_warn_printf(sc, "Failed to write register 0x%0x\n", off);
+
+	return (err);
+}
+
+/**
+ *	smsc_wait_for_bits - Polls on a register value until bits are cleared
+ *	@sc: soft context
+ *	@reg: offset of the register
+ *	@bits: if the bits are clear the function returns
+ *
+ *	LOCKING:
+ *	The device lock must be held before calling this function.
+ *
+ *	RETURNS:
+ *	0 on success, or a USB_ERR_?? error code on failure.
+ */
+static int
+smsc_wait_for_bits(struct smsc_softc *sc, uint32_t reg, uint32_t bits)
+{
+	usb_ticks_t start_ticks;
+	const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000);
+	uint32_t val;
+	int err;
+	
+	SMSC_LOCK_ASSERT(sc, MA_OWNED);
+
+	start_ticks = (usb_ticks_t)ticks;
+	do {
+		if ((err = smsc_read_reg(sc, reg, &val)) != 0)
+			return (err);
+		if (!(val & bits))
+			return (0);
+		
+		uether_pause(&sc->sc_ue, hz / 100);
+	} while (((usb_ticks_t)(ticks - start_ticks)) < max_ticks);
+
+	return (USB_ERR_TIMEOUT);
+}
+
+/**
+ *	smsc_eeprom_read - Reads the attached EEPROM
+ *	@sc: soft context
+ *	@off: the eeprom address offset
+ *	@buf: stores the bytes
+ *	@buflen: the number of bytes to read
+ *
+ *	Simply reads bytes from an attached eeprom.
+ *
+ *	LOCKING:
+ *	The function takes and releases the device lock if it is not already held.
+ *
+ *	RETURNS:
+ *	0 on success, or a USB_ERR_?? error code on failure.
+ */
+static int
+smsc_eeprom_read(struct smsc_softc *sc, uint16_t off, uint8_t *buf, uint16_t buflen)
+{
+	usb_ticks_t start_ticks;
+	const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000);
+	int err;
+	int locked;
+	uint32_t val;
+	uint16_t i;
+
+	locked = mtx_owned(&sc->sc_mtx);
+	if (!locked)
+		SMSC_LOCK(sc);
+
+	err = smsc_wait_for_bits(sc, SMSC_EEPROM_CMD, SMSC_EEPROM_CMD_BUSY);
+	if (err != 0) {
+		smsc_warn_printf(sc, "eeprom busy, failed to read data\n");
+		goto done;
+	}
+
+	/* start reading the bytes, one at a time */
+	for (i = 0; i < buflen; i++) {
+	
+		val = SMSC_EEPROM_CMD_BUSY | (SMSC_EEPROM_CMD_ADDR_MASK & (off + i));
+		if ((err = smsc_write_reg(sc, SMSC_EEPROM_CMD, val)) != 0)
+			goto done;
+		
+		start_ticks = (usb_ticks_t)ticks;
+		do {
+			if ((err = smsc_read_reg(sc, SMSC_EEPROM_CMD, &val)) != 0)
+				goto done;
+			if (!(val & SMSC_EEPROM_CMD_BUSY) || (val & SMSC_EEPROM_CMD_TIMEOUT))
+				break;
+
+			uether_pause(&sc->sc_ue, hz / 100);
+		} while (((usb_ticks_t)(ticks - start_ticks)) < max_ticks);
+
+		if (val & (SMSC_EEPROM_CMD_BUSY | SMSC_EEPROM_CMD_TIMEOUT)) {
+			smsc_warn_printf(sc, "eeprom command failed\n");
+			err = USB_ERR_IOERROR;
+			break;
+		}
+			
+		if ((err = smsc_read_reg(sc, SMSC_EEPROM_DATA, &val)) != 0)
+			goto done;
+
+		buf[i] = (val & 0xff);
+	}
+	
+done:
+	if (!locked)
+		SMSC_UNLOCK(sc);
+
+	return (err);
+}
+
+/**
+ *	smsc_miibus_readreg - Reads a MII/MDIO register
+ *	@dev: usb ether device
+ *	@phy: the number of phy reading from
+ *	@reg: the register address
+ *
+ *	Attempts to read a phy register over the MII bus.
+ *
+ *	LOCKING:
+ *	Takes and releases the device mutex lock if not already held.
+ *
+ *	RETURNS:
+ *	Returns the 16-bits read from the MII register, if this function fails 0
+ *	is returned.
+ */
+static int
+smsc_miibus_readreg(device_t dev, int phy, int reg)
+{
+	struct smsc_softc *sc = device_get_softc(dev);
+	int locked;
+	uint32_t addr;
+	uint32_t val = 0;
+
+	locked = mtx_owned(&sc->sc_mtx);
+	if (!locked)
+		SMSC_LOCK(sc);
+
+	if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) {
+		smsc_warn_printf(sc, "MII is busy\n");
+		goto done;
+	}
+
+	addr = (phy << 11) | (reg << 6) | SMSC_MII_READ;
+	smsc_write_reg(sc, SMSC_MII_ADDR, addr);
+
+	if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0)
+		smsc_warn_printf(sc, "MII read timeout\n");
+
+	smsc_read_reg(sc, SMSC_MII_DATA, &val);
+	val = le32toh(val);
+	
+done:
+	if (!locked)
+		SMSC_UNLOCK(sc);
+
+	return (val & 0xFFFF);
+}
+
+/**
+ *	smsc_miibus_writereg - Writes a MII/MDIO register
+ *	@dev: usb ether device
+ *	@phy: the number of phy writing to
+ *	@reg: the register address
+ *	@val: the value to write
+ *
+ *	Attempts to write a phy register over the MII bus.
+ *
+ *	LOCKING:
+ *	Takes and releases the device mutex lock if not already held.
+ *
+ *	RETURNS:
+ *	Always returns 0 regardless of success or failure.
+ */
+static int
+smsc_miibus_writereg(device_t dev, int phy, int reg, int val)
+{
+	struct smsc_softc *sc = device_get_softc(dev);
+	int locked;
+	uint32_t addr;
+
+	if (sc->sc_phyno != phy)
+		return (0);
+
+	locked = mtx_owned(&sc->sc_mtx);
+	if (!locked)
+		SMSC_LOCK(sc);
+
+	if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) {
+		smsc_warn_printf(sc, "MII is busy\n");
+		goto done;
+	}
+
+	val = htole32(val);
+	smsc_write_reg(sc, SMSC_MII_DATA, val);
+
+	addr = (phy << 11) | (reg << 6) | SMSC_MII_WRITE;
+	smsc_write_reg(sc, SMSC_MII_ADDR, addr);
+
+	if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0)
+		smsc_warn_printf(sc, "MII write timeout\n");
+
+done:
+	if (!locked)
+		SMSC_UNLOCK(sc);
+	return (0);
+}
+
+
+
+/**
+ *	smsc_miibus_statchg - Called to detect phy status change
+ *	@dev: usb ether device
+ *
+ *	This function is called periodically by the system to poll for status
+ *	changes of the link.
+ *
+ *	LOCKING:
+ *	Takes and releases the device mutex lock if not already held.
+ */
+static void
+smsc_miibus_statchg(device_t dev)
+{
+	struct smsc_softc *sc = device_get_softc(dev);
+	struct mii_data *mii = uether_getmii(&sc->sc_ue);
+	struct ifnet *ifp;
+	int locked;
+	int err;
+	uint32_t flow;
+	uint32_t afc_cfg;
+
+	locked = mtx_owned(&sc->sc_mtx);
+	if (!locked)
+		SMSC_LOCK(sc);
+
+	ifp = uether_getifp(&sc->sc_ue);
+	if (mii == NULL || ifp == NULL ||
+	    (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
+		goto done;
+
+	/* Use the MII status to determine link status */
+	sc->sc_flags &= ~SMSC_FLAG_LINK;
+	if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
+	    (IFM_ACTIVE | IFM_AVALID)) {
+		switch (IFM_SUBTYPE(mii->mii_media_active)) {
+			case IFM_10_T:
+			case IFM_100_TX:
+				sc->sc_flags |= SMSC_FLAG_LINK;
+				break;
+			case IFM_1000_T:
+				/* Gigabit ethernet not supported by chipset */
+				break;
+			default:
+				break;
+		}
+	}
+
+	/* Lost link, do nothing. */
+	if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) {
+		smsc_dbg_printf(sc, "link flag not set\n");
+		goto done;
+	}
+	
+	err = smsc_read_reg(sc, SMSC_AFC_CFG, &afc_cfg);
+	if (err) {
+		smsc_warn_printf(sc, "failed to read initial AFC_CFG, error %d\n", err);
+		goto done;
+	}
+	
+	/* Enable/disable full duplex operation and TX/RX pause */
+	if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
+		smsc_dbg_printf(sc, "full duplex operation\n");
+		sc->sc_mac_csr &= ~SMSC_MAC_CSR_RCVOWN;
+		sc->sc_mac_csr |= SMSC_MAC_CSR_FDPX;
+
+		if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
+			flow = 0xffff0002;
+		else
+			flow = 0;
+			
+		if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
+			afc_cfg |= 0xf;
+		else
+			afc_cfg &= ~0xf;
+		
+	} else {
+		smsc_dbg_printf(sc, "half duplex operation\n");
+		sc->sc_mac_csr &= ~SMSC_MAC_CSR_FDPX;
+		sc->sc_mac_csr |= SMSC_MAC_CSR_RCVOWN;
+		
+		flow = 0;
+		afc_cfg |= 0xf;
+	}
+
+	err = smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
+	err += smsc_write_reg(sc, SMSC_FLOW, flow);
+	err += smsc_write_reg(sc, SMSC_AFC_CFG, afc_cfg);
+	if (err)
+		smsc_warn_printf(sc, "media change failed, error %d\n", err);
+	
+done:
+	if (!locked)
+		SMSC_UNLOCK(sc);
+}
+
+/**
+ *	smsc_ifmedia_upd - Set media options
+ *	@ifp: interface pointer
+ *
+ *	Basically boilerplate code that simply calls the mii functions to set the
+ *	media options.
+ *
+ *	LOCKING:
+ *	The device lock must be held before this function is called.
+ *
+ *	RETURNS:
+ *	Returns 0 on success or a negative error code.
+ */
+static int
+smsc_ifmedia_upd(struct ifnet *ifp)
+{
+	struct smsc_softc *sc = ifp->if_softc;
+	struct mii_data *mii = uether_getmii(&sc->sc_ue);
+	struct mii_softc *miisc;
+	int err;
+
+	SMSC_LOCK_ASSERT(sc, MA_OWNED);
+
+	LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
+		PHY_RESET(miisc);
+	err = mii_mediachg(mii);
+	return (err);
+}
+
+/**
+ *	smsc_ifmedia_sts - Report current media status
+ *	@ifp: inet interface pointer
+ *	@ifmr: interface media request
+ *
+ *	Basically boilerplate code that simply calls the mii functions to get the
+ *	media status.
+ *
+ *	LOCKING:
+ *	Internally takes and releases the device lock.
+ */
+static void
+smsc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
+{
+	struct smsc_softc *sc = ifp->if_softc;
+	struct mii_data *mii = uether_getmii(&sc->sc_ue);
+
+	SMSC_LOCK(sc);
+	mii_pollstat(mii);
+	ifmr->ifm_active = mii->mii_media_active;
+	ifmr->ifm_status = mii->mii_media_status;
+	SMSC_UNLOCK(sc);
+}
+
+/**
+ *	smsc_hash - Calculate the hash of a mac address
+ *	@addr: The mac address to calculate the hash on
+ *
+ *	This function is used when configuring a range of m'cast mac addresses to
+ *	filter on.  The hash of the mac address is put in the device's mac hash
+ *	table.
+ *
+ *	RETURNS:
+ *	Returns a value from 0-63 value which is the hash of the mac address.
+ */
+static inline uint32_t
+smsc_hash(uint8_t addr[ETHER_ADDR_LEN])
+{
+	return (ether_crc32_be(addr, ETHER_ADDR_LEN) >> 26) & 0x3f;
+}
+
+/**
+ *	smsc_setmulti - Setup multicast
+ *	@ue: usb ethernet device context
+ *
+ *	Tells the device to either accept frames with a multicast mac address, a
+ *	select group of m'cast mac addresses or just the devices mac address.
+ *
+ *	LOCKING:
+ *	Should be called with the SMSC lock held.
+ */
+static void
+smsc_setmulti(struct usb_ether *ue)
+{
+	struct smsc_softc *sc = uether_getsc(ue);
+	struct ifnet *ifp = uether_getifp(ue);
+	struct ifmultiaddr *ifma;
+	uint32_t hashtbl[2] = { 0, 0 };
+	uint32_t hash;
+
+	SMSC_LOCK_ASSERT(sc, MA_OWNED);
+
+	if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) {
+		smsc_dbg_printf(sc, "receive all multicast enabled\n");
+		sc->sc_mac_csr |= SMSC_MAC_CSR_MCPAS;
+		sc->sc_mac_csr &= ~SMSC_MAC_CSR_HPFILT;
+		
+	} else {
+		/* Take the lock of the mac address list before hashing each of them */
+		if_maddr_rlock(ifp);
+
+		if (!TAILQ_EMPTY(&ifp->if_multiaddrs)) {
+			/* We are filtering on a set of address so calculate hashes of each
+			 * of the address and set the corresponding bits in the register.
+			 */
+			sc->sc_mac_csr |= SMSC_MAC_CSR_HPFILT;
+			sc->sc_mac_csr &= ~(SMSC_MAC_CSR_PRMS | SMSC_MAC_CSR_MCPAS);
+		
+			TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
+				if (ifma->ifma_addr->sa_family != AF_LINK)
+					continue;
+
+				hash = smsc_hash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
+				hashtbl[hash >> 5] |= 1 << (hash & 0x1F);
+			}
+		} else {
+			/* Only receive packets with destination set to our mac address */
+			sc->sc_mac_csr &= ~(SMSC_MAC_CSR_MCPAS | SMSC_MAC_CSR_HPFILT);
+		}
+
+		if_maddr_runlock(ifp);
+		
+		/* Debug */
+		if (sc->sc_mac_csr & SMSC_MAC_CSR_HPFILT)
+			smsc_dbg_printf(sc, "receive select group of macs\n");
+		else
+			smsc_dbg_printf(sc, "receive own packets only\n");
+	}
+
+	/* Write the hash table and mac control registers */
+	smsc_write_reg(sc, SMSC_HASHH, hashtbl[1]);
+	smsc_write_reg(sc, SMSC_HASHL, hashtbl[0]);
+	smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
+}
+
+
+/**
+ *	smsc_setpromisc - Enables/disables promiscuous mode
+ *	@ue: usb ethernet device context
+ *
+ *	LOCKING:
+ *	Should be called with the SMSC lock held.
+ */
+static void
+smsc_setpromisc(struct usb_ether *ue)
+{
+	struct smsc_softc *sc = uether_getsc(ue);
+	struct ifnet *ifp = uether_getifp(ue);
+
+	smsc_dbg_printf(sc, "promiscuous mode %sabled\n",
+	                (ifp->if_flags & IFF_PROMISC) ? "en" : "dis");
+
+	SMSC_LOCK_ASSERT(sc, MA_OWNED);
+
+	if (ifp->if_flags & IFF_PROMISC)
+		sc->sc_mac_csr |= SMSC_MAC_CSR_PRMS;
+	else
+		sc->sc_mac_csr &= ~SMSC_MAC_CSR_PRMS;
+
+	smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
+}
+
+
+/**
+ *	smsc_sethwcsum - Enable or disable H/W UDP and TCP checksumming
+ *	@sc: driver soft context
+ *
+ *	LOCKING:
+ *	Should be called with the SMSC lock held.
+ *
+ *	RETURNS:
+ *	Returns 0 on success or a negative error code.
+ */
+static int smsc_sethwcsum(struct smsc_softc *sc)
+{
+	struct ifnet *ifp = uether_getifp(&sc->sc_ue);
+	uint32_t val;
+	int err;
+
+	if (!ifp)
+		return (-EIO);
+
+	SMSC_LOCK_ASSERT(sc, MA_OWNED);
+
+	err = smsc_read_reg(sc, SMSC_COE_CTRL, &val);
+	if (err != 0) {
+		smsc_warn_printf(sc, "failed to read SMSC_COE_CTRL (err=%d)\n", err);
+		return (err);
+	}
+
+	/* Enable/disable the Rx checksum */
+	if ((ifp->if_capabilities & ifp->if_capenable) & IFCAP_RXCSUM)
+		val |= SMSC_COE_CTRL_RX_EN;
+	else
+		val &= ~SMSC_COE_CTRL_RX_EN;
+
+	/* Enable/disable the Tx checksum (currently not supported) */
+	if ((ifp->if_capabilities & ifp->if_capenable) & IFCAP_TXCSUM)
+		val |= SMSC_COE_CTRL_TX_EN;
+	else
+		val &= ~SMSC_COE_CTRL_TX_EN;
+
+	err = smsc_write_reg(sc, SMSC_COE_CTRL, val);
+	if (err != 0) {
+		smsc_warn_printf(sc, "failed to write SMSC_COE_CTRL (err=%d)\n", err);
+		return (err);
+	}
+
+	return (0);
+}
+
+
+/**
+ *	smsc_setmacaddress - Sets the mac address in the device
+ *	@sc: driver soft context
+ *	@addr: pointer to array contain at least 6 bytes of the mac
+ *
+ *	Writes the MAC address into the device, usually the MAC is programmed with
+ *	values from the EEPROM.
+ *
+ *	LOCKING:
+ *	Should be called with the SMSC lock held.
+ *
+ *	RETURNS:
+ *	Returns 0 on success or a negative error code.
+ */
+static int
+smsc_setmacaddress(struct smsc_softc *sc, const uint8_t *addr)
+{
+	int err;
+	uint32_t val;
+
+	smsc_dbg_printf(sc, "setting mac address to %02x:%02x:%02x:%02x:%02x:%02x\n",
+	                addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
+
+	SMSC_LOCK_ASSERT(sc, MA_OWNED);
+
+	val = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0];
+	if ((err = smsc_write_reg(sc, SMSC_MAC_ADDRL, val)) != 0)
+		goto done;
+		
+	val = (addr[5] << 8) | addr[4];
+	err = smsc_write_reg(sc, SMSC_MAC_ADDRH, val);
+	
+done:
+	return (err);
+}
+
+/**
+ *	smsc_reset - Reset the SMSC chip
+ *	@sc: device soft context
+ *
+ *	LOCKING:
+ *	Should be called with the SMSC lock held.
+ */
+static void
+smsc_reset(struct smsc_softc *sc)
+{
+	struct usb_config_descriptor *cd;
+	usb_error_t err;
+
+	cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev);
+
+	err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx,
+	                          cd->bConfigurationValue);
+	if (err)
+		smsc_warn_printf(sc, "reset failed (ignored)\n");
+
+	/* Wait a little while for the chip to get its brains in order. */
+	uether_pause(&sc->sc_ue, hz / 100);
+
+	/* Reinitialize controller to achieve full reset. */
+	smsc_chip_init(sc);
+}
+
+
+/**
+ *	smsc_init - Initialises the LAN95xx chip
+ *	@ue: USB ether interface
+ *
+ *	Called when the interface is brought up (i.e. ifconfig ue0 up), this
+ *	initialise the interface and the rx/tx pipes.
+ *
+ *	LOCKING:
+ *	Should be called with the SMSC lock held.
+ */
+static void
+smsc_init(struct usb_ether *ue)
+{
+	struct smsc_softc *sc = uether_getsc(ue);
+	struct ifnet *ifp = uether_getifp(ue);
+
+	SMSC_LOCK_ASSERT(sc, MA_OWNED);
+
+	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
+		return;
+
+	/* Cancel pending I/O */
+	smsc_stop(ue);
+
+#if __FreeBSD_version <= 1000000
+	/* On earlier versions this was the first place we could tell the system
+	 * that we supported h/w csuming, however this is only called after the
+	 * the interface has been brought up - not ideal.  
+	 */
+	if (!(ifp->if_capabilities & IFCAP_RXCSUM)) {
+		ifp->if_capabilities |= IFCAP_RXCSUM;
+		ifp->if_capenable |= IFCAP_RXCSUM;
+		ifp->if_hwassist = 0;
+	}
+	
+	/* TX checksuming is disabled for now
+	ifp->if_capabilities |= IFCAP_TXCSUM;
+	ifp->if_capenable |= IFCAP_TXCSUM;
+	ifp->if_hwassist = CSUM_TCP | CSUM_UDP;
+	*/
+#endif
+
+	/* Reset the ethernet interface. */
+	smsc_reset(sc);
+
+	/* Load the multicast filter. */
+	smsc_setmulti(ue);
+
+	/* TCP/UDP checksum offload engines. */
+	smsc_sethwcsum(sc);
+
+	usbd_xfer_set_stall(sc->sc_xfer[SMSC_BULK_DT_WR]);
+
+	/* Indicate we are up and running. */
+	ifp->if_drv_flags |= IFF_DRV_RUNNING;
+
+	/* Switch to selected media. */
+	smsc_ifmedia_upd(ifp);
+	smsc_start(ue);
+}
+
+/**
+ *	smsc_bulk_read_callback - Read callback used to process the USB URB
+ *	@xfer: the USB transfer
+ *	@error: 
+ *
+ *	Reads the URB data which can contain one or more ethernet frames, the
+ *	frames are copyed into a mbuf and given to the system.
+ *
+ *	LOCKING:
+ *	No locking required, doesn't access internal driver settings.
+ */
+static void
+smsc_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
+{
+	struct smsc_softc *sc = usbd_xfer_softc(xfer);
+	struct usb_ether *ue = &sc->sc_ue;
+	struct ifnet *ifp = uether_getifp(ue);
+	struct mbuf *m;
+	struct usb_page_cache *pc;
+	uint32_t rxhdr;
+	uint16_t pktlen;
+	int off;
+	int actlen;
+
+	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
+	smsc_dbg_printf(sc, "rx : actlen %d\n", actlen);
+
+	switch (USB_GET_STATE(xfer)) {
+	case USB_ST_TRANSFERRED:
+	
+		/* There is always a zero length frame after bringing the IF up */
+		if (actlen < (sizeof(rxhdr) + ETHER_CRC_LEN))
+			goto tr_setup;
+
+		/* There maybe multiple packets in the USB frame, each will have a 
+		 * header and each needs to have it's own mbuf allocated and populated
+		 * for it.
+		 */
+		pc = usbd_xfer_get_frame(xfer, 0);
+		off = 0;
+		
+		while (off < actlen) {
+		
+			/* The frame header is always aligned on a 4 byte boundary */
+			off = ((off + 0x3) & ~0x3);
+
+			usbd_copy_out(pc, off, &rxhdr, sizeof(rxhdr));
+			off += (sizeof(rxhdr) + ETHER_ALIGN);
+			rxhdr = le32toh(rxhdr);
+		
+			pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr);
+			
+			smsc_dbg_printf(sc, "rx : rxhdr 0x%08x : pktlen %d : actlen %d : "
+			                "off %d\n", rxhdr, pktlen, actlen, off);
+
+			
+			if (rxhdr & SMSC_RX_STAT_ERROR) {
+				smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr);
+				if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
+				if (rxhdr & SMSC_RX_STAT_COLLISION)
+					if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 1);
+			} else {
+
+				/* Check if the ethernet frame is too big or too small */
+				if ((pktlen < ETHER_HDR_LEN) || (pktlen > (actlen - off)))
+					goto tr_setup;
+			
+				/* Create a new mbuf to store the packet in */
+				m = uether_newbuf();
+				if (m == NULL) {
+					smsc_warn_printf(sc, "failed to create new mbuf\n");
+					if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
+					goto tr_setup;
+				}
+				
+				usbd_copy_out(pc, off, mtod(m, uint8_t *), pktlen);
+
+				/* Check if RX TCP/UDP checksumming is being offloaded */
+				if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) {
+
+					struct ether_header *eh;
+
+					eh = mtod(m, struct ether_header *);
+				
+					/* Remove the extra 2 bytes of the csum */
+					pktlen -= 2;
+
+					/* The checksum appears to be simplistically calculated
+					 * over the udp/tcp header and data up to the end of the
+					 * eth frame.  Which means if the eth frame is padded
+					 * the csum calculation is incorrectly performed over
+					 * the padding bytes as well. Therefore to be safe we
+					 * ignore the H/W csum on frames less than or equal to
+					 * 64 bytes.
+					 *
+					 * Ignore H/W csum for non-IPv4 packets.
+					 */
+					if ((be16toh(eh->ether_type) == ETHERTYPE_IP) &&
+					    (pktlen > ETHER_MIN_LEN)) {
+						struct ip *ip;
+
+						ip = (struct ip *)(eh + 1);
+						if ((ip->ip_v == IPVERSION) &&
+						    ((ip->ip_p == IPPROTO_TCP) ||
+						     (ip->ip_p == IPPROTO_UDP))) {
+							/* Indicate the UDP/TCP csum has been calculated */
+							m->m_pkthdr.csum_flags |= CSUM_DATA_VALID;
+
+							/* Copy the TCP/UDP checksum from the last 2 bytes
+							 * of the transfer and put in the csum_data field.
+							 */
+							usbd_copy_out(pc, (off + pktlen),
+							              &m->m_pkthdr.csum_data, 2);
+
+							/* The data is copied in network order, but the
+							 * csum algorithm in the kernel expects it to be
+							 * in host network order.
+							 */
+							m->m_pkthdr.csum_data = ntohs(m->m_pkthdr.csum_data);
+
+							smsc_dbg_printf(sc, "RX checksum offloaded (0x%04x)\n",
+							                m->m_pkthdr.csum_data);
+						}
+					}
+					
+					/* Need to adjust the offset as well or we'll be off
+					 * by 2 because the csum is removed from the packet
+					 * length.
+					 */
+					off += 2;
+				}
+			
+				/* Finally enqueue the mbuf on the receive queue */
+				/* Remove 4 trailing bytes */
+				if (pktlen < (4 + ETHER_HDR_LEN)) {
+					m_freem(m);
+					goto tr_setup;
+				}
+				uether_rxmbuf(ue, m, pktlen - 4);
+			}
+
+			/* Update the offset to move to the next potential packet */
+			off += pktlen;
+		}
+	
+		/* FALLTHROUGH */
+		
+	case USB_ST_SETUP:
+tr_setup:
+		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
+		usbd_transfer_submit(xfer);
+		uether_rxflush(ue);
+		return;
+
+	default:
+		if (error != USB_ERR_CANCELLED) {
+			smsc_warn_printf(sc, "bulk read error, %s\n", usbd_errstr(error));
+			usbd_xfer_set_stall(xfer);
+			goto tr_setup;
+		}
+		return;
+	}
+}
+
+/**
+ *	smsc_bulk_write_callback - Write callback used to send ethernet frame(s)
+ *	@xfer: the USB transfer
+ *	@error: error code if the transfers is in an errored state
+ *
+ *	The main write function that pulls ethernet frames off the queue and sends
+ *	them out.
+ *
+ *	LOCKING:
+ *	
+ */
+static void
+smsc_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
+{
+	struct smsc_softc *sc = usbd_xfer_softc(xfer);
+	struct ifnet *ifp = uether_getifp(&sc->sc_ue);
+	struct usb_page_cache *pc;
+	struct mbuf *m;
+	uint32_t txhdr;
+	uint32_t frm_len = 0;
+	int nframes;
+
+	switch (USB_GET_STATE(xfer)) {
+	case USB_ST_TRANSFERRED:
+		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
+		/* FALLTHROUGH */
+
+	case USB_ST_SETUP:
+tr_setup:
+		if ((sc->sc_flags & SMSC_FLAG_LINK) == 0 ||
+			(ifp->if_drv_flags & IFF_DRV_OACTIVE) != 0) {
+			/* Don't send anything if there is no link or controller is busy. */
+			return;
+		}
+
+		for (nframes = 0; nframes < 16 &&
+		    !IFQ_DRV_IS_EMPTY(&ifp->if_snd); nframes++) {
+			IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
+			if (m == NULL)
+				break;
+			usbd_xfer_set_frame_offset(xfer, nframes * MCLBYTES,
+			    nframes);
+			frm_len = 0;
+			pc = usbd_xfer_get_frame(xfer, nframes);
+
+			/* Each frame is prefixed with two 32-bit values describing the
+			 * length of the packet and buffer.
+			 */
+			txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) | 
+					SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG;
+			txhdr = htole32(txhdr);
+			usbd_copy_in(pc, 0, &txhdr, sizeof(txhdr));
+			
+			txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len);
+			txhdr = htole32(txhdr);
+			usbd_copy_in(pc, 4, &txhdr, sizeof(txhdr));
+			
+			frm_len += 8;
+
+			/* Next copy in the actual packet */
+			usbd_m_copy_in(pc, frm_len, m, 0, m->m_pkthdr.len);
+			frm_len += m->m_pkthdr.len;
+
+			if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
+
+			/* If there's a BPF listener, bounce a copy of this frame to him */
+			BPF_MTAP(ifp, m);
+
+			m_freem(m);
+
+			/* Set frame length. */
+			usbd_xfer_set_frame_len(xfer, nframes, frm_len);
+		}
+		if (nframes != 0) {
+			usbd_xfer_set_frames(xfer, nframes);
+			usbd_transfer_submit(xfer);
+			ifp->if_drv_flags |= IFF_DRV_OACTIVE;
+		}
+		return;
+
+	default:
+		if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
+		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
+		
+		if (error != USB_ERR_CANCELLED) {
+			smsc_err_printf(sc, "usb error on tx: %s\n", usbd_errstr(error));
+			usbd_xfer_set_stall(xfer);
+			goto tr_setup;
+		}
+		return;
+	}
+}
+
+/**
+ *	smsc_tick - Called periodically to monitor the state of the LAN95xx chip
+ *	@ue: USB ether interface
+ *
+ *	Simply calls the mii status functions to check the state of the link.
+ *
+ *	LOCKING:
+ *	Should be called with the SMSC lock held.
+ */
+static void
+smsc_tick(struct usb_ether *ue)
+{
+	struct smsc_softc *sc = uether_getsc(ue);
+	struct mii_data *mii = uether_getmii(&sc->sc_ue);
+
+	SMSC_LOCK_ASSERT(sc, MA_OWNED);
+
+	mii_tick(mii);
+	if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) {
+		smsc_miibus_statchg(ue->ue_dev);
+		if ((sc->sc_flags & SMSC_FLAG_LINK) != 0)
+			smsc_start(ue);
+	}
+}
+
+/**
+ *	smsc_start - Starts communication with the LAN95xx chip
+ *	@ue: USB ether interface
+ *
+ *	
+ *
+ */
+static void
+smsc_start(struct usb_ether *ue)
+{
+	struct smsc_softc *sc = uether_getsc(ue);
+
+	/*
+	 * start the USB transfers, if not already started:
+	 */
+	usbd_transfer_start(sc->sc_xfer[SMSC_BULK_DT_RD]);
+	usbd_transfer_start(sc->sc_xfer[SMSC_BULK_DT_WR]);
+}
+
+/**
+ *	smsc_stop - Stops communication with the LAN95xx chip
+ *	@ue: USB ether interface
+ *
+ *	
+ *
+ */
+static void
+smsc_stop(struct usb_ether *ue)
+{
+	struct smsc_softc *sc = uether_getsc(ue);
+	struct ifnet *ifp = uether_getifp(ue);
+
+	SMSC_LOCK_ASSERT(sc, MA_OWNED);
+
+	ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
+	sc->sc_flags &= ~SMSC_FLAG_LINK;
+
+	/*
+	 * stop all the transfers, if not already stopped:
+	 */
+	usbd_transfer_stop(sc->sc_xfer[SMSC_BULK_DT_WR]);
+	usbd_transfer_stop(sc->sc_xfer[SMSC_BULK_DT_RD]);
+}
+
+/**
+ *	smsc_phy_init - Initialises the in-built SMSC phy
+ *	@sc: driver soft context
+ *
+ *	Resets the PHY part of the chip and then initialises it to default
+ *	values.  The 'link down' and 'auto-negotiation complete' interrupts
+ *	from the PHY are also enabled, however we don't monitor the interrupt
+ *	endpoints for the moment.
+ *
+ *	RETURNS:
+ *	Returns 0 on success or EIO if failed to reset the PHY.
+ */
+static int
+smsc_phy_init(struct smsc_softc *sc)
+{
+	int bmcr;
+	usb_ticks_t start_ticks;
+	const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000);
+
+	SMSC_LOCK_ASSERT(sc, MA_OWNED);
+
+	/* Reset phy and wait for reset to complete */
+	smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR, BMCR_RESET);
+
+	start_ticks = ticks;
+	do {
+		uether_pause(&sc->sc_ue, hz / 100);
+		bmcr = smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR);
+	} while ((bmcr & MII_BMCR) && ((ticks - start_ticks) < max_ticks));
+
+	if (((usb_ticks_t)(ticks - start_ticks)) >= max_ticks) {
+		smsc_err_printf(sc, "PHY reset timed-out");
+		return (EIO);
+	}
+
+	smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_ANAR,
+	                     ANAR_10 | ANAR_10_FD | ANAR_TX | ANAR_TX_FD |  /* all modes */
+	                     ANAR_CSMA | 
+	                     ANAR_FC |
+	                     ANAR_PAUSE_ASYM);
+
+	/* Setup the phy to interrupt when the link goes down or autoneg completes */
+	smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, SMSC_PHY_INTR_STAT);
+	smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, SMSC_PHY_INTR_MASK,
+	                     (SMSC_PHY_INTR_ANEG_COMP | SMSC_PHY_INTR_LINK_DOWN));
+	
+	/* Restart auto-negotation */
+	bmcr = smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR);
+	bmcr |= BMCR_STARTNEG;
+	smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR, bmcr);
+	
+	return (0);
+}
+
+
+/**
+ *	smsc_chip_init - Initialises the chip after power on
+ *	@sc: driver soft context
+ *
+ *	This initialisation sequence is modelled on the procedure in the Linux
+ *	driver.
+ *
+ *	RETURNS:
+ *	Returns 0 on success or an error code on failure.
+ */
+static int
+smsc_chip_init(struct smsc_softc *sc)
+{
+	int err;
+	int locked;
+	uint32_t reg_val;
+	int burst_cap;
+
+	locked = mtx_owned(&sc->sc_mtx);
+	if (!locked)
+		SMSC_LOCK(sc);
+
+	/* Enter H/W config mode */
+	smsc_write_reg(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST);
+
+	if ((err = smsc_wait_for_bits(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST)) != 0) {
+		smsc_warn_printf(sc, "timed-out waiting for reset to complete\n");
+		goto init_failed;
+	}
+
+	/* Reset the PHY */
+	smsc_write_reg(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST);
+
+	if ((err = smsc_wait_for_bits(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST)) != 0) {
+		smsc_warn_printf(sc, "timed-out waiting for phy reset to complete\n");
+		goto init_failed;
+	}
+
+	/* Set the mac address */
+	if ((err = smsc_setmacaddress(sc, sc->sc_ue.ue_eaddr)) != 0) {
+		smsc_warn_printf(sc, "failed to set the MAC address\n");
+		goto init_failed;
+	}
+
+	/* Don't know what the HW_CFG_BIR bit is, but following the reset sequence
+	 * as used in the Linux driver.
+	 */
+	if ((err = smsc_read_reg(sc, SMSC_HW_CFG, &reg_val)) != 0) {
+		smsc_warn_printf(sc, "failed to read HW_CFG: %d\n", err);
+		goto init_failed;
+	}
+	reg_val |= SMSC_HW_CFG_BIR;
+	smsc_write_reg(sc, SMSC_HW_CFG, reg_val);
+
+	/* There is a so called 'turbo mode' that the linux driver supports, it
+	 * seems to allow you to jam multiple frames per Rx transaction.  By default
+	 * this driver supports that and therefore allows multiple frames per URB.
+	 *
+	 * The xfer buffer size needs to reflect this as well, therefore based on
+	 * the calculations in the Linux driver the RX bufsize is set to 18944,
+	 *     bufsz = (16 * 1024 + 5 * 512)
+	 *
+	 * Burst capability is the number of URBs that can be in a burst of data/
+	 * ethernet frames.
+	 */
+	if (usbd_get_speed(sc->sc_ue.ue_udev) == USB_SPEED_HIGH)
+		burst_cap = 37;
+	else
+		burst_cap = 128;
+
+	smsc_write_reg(sc, SMSC_BURST_CAP, burst_cap);
+
+	/* Set the default bulk in delay (magic value from Linux driver) */
+	smsc_write_reg(sc, SMSC_BULK_IN_DLY, 0x00002000);
+
+
+
+	/*
+	 * Initialise the RX interface
+	 */
+	if ((err = smsc_read_reg(sc, SMSC_HW_CFG, &reg_val)) < 0) {
+		smsc_warn_printf(sc, "failed to read HW_CFG: (err = %d)\n", err);
+		goto init_failed;
+	}
+
+	/* Adjust the packet offset in the buffer (designed to try and align IP
+	 * header on 4 byte boundary)
+	 */
+	reg_val &= ~SMSC_HW_CFG_RXDOFF;
+	reg_val |= (ETHER_ALIGN << 9) & SMSC_HW_CFG_RXDOFF;
+	
+	/* The following setings are used for 'turbo mode', a.k.a multiple frames
+	 * per Rx transaction (again info taken form Linux driver).
+	 */
+	reg_val |= (SMSC_HW_CFG_MEF | SMSC_HW_CFG_BCE);
+
+	smsc_write_reg(sc, SMSC_HW_CFG, reg_val);
+
+	/* Clear the status register ? */
+	smsc_write_reg(sc, SMSC_INTR_STATUS, 0xffffffff);
+
+	/* Read and display the revision register */
+	if ((err = smsc_read_reg(sc, SMSC_ID_REV, &sc->sc_rev_id)) < 0) {
+		smsc_warn_printf(sc, "failed to read ID_REV (err = %d)\n", err);
+		goto init_failed;
+	}
+
+	device_printf(sc->sc_ue.ue_dev, "chip 0x%04lx, rev. %04lx\n", 
+	    (sc->sc_rev_id & SMSC_ID_REV_CHIP_ID_MASK) >> 16, 
+	    (sc->sc_rev_id & SMSC_ID_REV_CHIP_REV_MASK));
+
+	/* GPIO/LED setup */
+	reg_val = SMSC_LED_GPIO_CFG_SPD_LED | SMSC_LED_GPIO_CFG_LNK_LED | 
+	          SMSC_LED_GPIO_CFG_FDX_LED;
+	smsc_write_reg(sc, SMSC_LED_GPIO_CFG, reg_val);
+
+	/*
+	 * Initialise the TX interface
+	 */
+	smsc_write_reg(sc, SMSC_FLOW, 0);
+
+	smsc_write_reg(sc, SMSC_AFC_CFG, AFC_CFG_DEFAULT);
+
+	/* Read the current MAC configuration */
+	if ((err = smsc_read_reg(sc, SMSC_MAC_CSR, &sc->sc_mac_csr)) < 0) {
+		smsc_warn_printf(sc, "failed to read MAC_CSR (err=%d)\n", err);
+		goto init_failed;
+	}
+	
+	/* Vlan */
+	smsc_write_reg(sc, SMSC_VLAN1, (uint32_t)ETHERTYPE_VLAN);
+
+	/*
+	 * Initialise the PHY
+	 */
+	if ((err = smsc_phy_init(sc)) != 0)
+		goto init_failed;
+
+
+	/*
+	 * Start TX
+	 */
+	sc->sc_mac_csr |= SMSC_MAC_CSR_TXEN;
+	smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
+	smsc_write_reg(sc, SMSC_TX_CFG, SMSC_TX_CFG_ON);
+
+	/*
+	 * Start RX
+	 */
+	sc->sc_mac_csr |= SMSC_MAC_CSR_RXEN;
+	smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
+
+	if (!locked)
+		SMSC_UNLOCK(sc);
+
+	return (0);
+	
+init_failed:
+	if (!locked)
+		SMSC_UNLOCK(sc);
+
+	smsc_err_printf(sc, "smsc_chip_init failed (err=%d)\n", err);
+	return (err);
+}
+
+
+/**
+ *	smsc_ioctl - ioctl function for the device
+ *	@ifp: interface pointer
+ *	@cmd: the ioctl command
+ *	@data: data passed in the ioctl call, typically a pointer to struct ifreq.
+ *	
+ *	The ioctl routine is overridden to detect change requests for the H/W
+ *	checksum capabilities.
+ *
+ *	RETURNS:
+ *	0 on success and an error code on failure.
+ */
+static int
+smsc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
+{
+	struct usb_ether *ue = ifp->if_softc;
+	struct smsc_softc *sc;
+	struct ifreq *ifr;
+	int rc;
+	int mask;
+	int reinit;
+	
+	if (cmd == SIOCSIFCAP) {
+
+		sc = uether_getsc(ue);
+		ifr = (struct ifreq *)data;
+
+		SMSC_LOCK(sc);
+
+		rc = 0;
+		reinit = 0;
+
+		mask = ifr->ifr_reqcap ^ ifp->if_capenable;
+
+		/* Modify the RX CSUM enable bits */
+		if ((mask & IFCAP_RXCSUM) != 0 &&
+		    (ifp->if_capabilities & IFCAP_RXCSUM) != 0) {
+			ifp->if_capenable ^= IFCAP_RXCSUM;
+			
+			if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
+				ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
+				reinit = 1;
+			}
+		}
+		
+		SMSC_UNLOCK(sc);
+		if (reinit)
+#if __FreeBSD_version > 1000000
+			uether_init(ue);
+#else
+			ifp->if_init(ue);
+#endif
+
+	} else {
+		rc = uether_ioctl(ifp, cmd, data);
+	}
+
+	return (rc);
+}
+
+#ifdef FDT
+static phandle_t
+smsc_fdt_find_eth_node(phandle_t start)
+{
+	phandle_t child, node;
+
+	/* Traverse through entire tree to find usb ethernet nodes. */
+	for (node = OF_child(start); node != 0; node = OF_peer(node)) {
+		if (fdt_is_compatible(node, "net,ethernet") &&
+		    fdt_is_compatible(node, "usb,device"))
+			return (node);
+		child = smsc_fdt_find_eth_node(node);
+		if (child != 0)
+			return (child);
+	}
+
+	return (0);
+}
+
+/**
+ * Get MAC address from FDT blob.  Firmware or loader should fill
+ * mac-address or local-mac-address property.  Returns 0 if MAC address
+ * obtained, error code otherwise.
+ */
+static int
+smsc_fdt_find_mac(unsigned char *mac)
+{
+	phandle_t node, root;
+	int len;
+
+	root = OF_finddevice("/");
+	node = smsc_fdt_find_eth_node(root);
+	if (node != 0) {
+
+		/* Check if there is property */
+		if ((len = OF_getproplen(node, "local-mac-address")) > 0) {
+			if (len != ETHER_ADDR_LEN)
+				return (EINVAL);
+
+			OF_getprop(node, "local-mac-address", mac,
+			    ETHER_ADDR_LEN);
+			return (0);
+		}
+
+		if ((len = OF_getproplen(node, "mac-address")) > 0) {
+			if (len != ETHER_ADDR_LEN)
+				return (EINVAL);
+
+			OF_getprop(node, "mac-address", mac,
+			    ETHER_ADDR_LEN);
+			return (0);
+		}
+	}
+
+	return (ENXIO);
+}
+#endif
+
+/**
+ *	smsc_attach_post - Called after the driver attached to the USB interface
+ *	@ue: the USB ethernet device
+ *
+ *	This is where the chip is intialised for the first time.  This is different
+ *	from the smsc_init() function in that that one is designed to setup the
+ *	H/W to match the UE settings and can be called after a reset.
+ *
+ *
+ */
+static void
+smsc_attach_post(struct usb_ether *ue)
+{
+	struct smsc_softc *sc = uether_getsc(ue);
+	uint32_t mac_h, mac_l;
+	int err;
+
+	smsc_dbg_printf(sc, "smsc_attach_post\n");
+
+	/* Setup some of the basics */
+	sc->sc_phyno = 1;
+
+
+	/* Attempt to get the mac address, if an EEPROM is not attached this
+	 * will just return FF:FF:FF:FF:FF:FF, so in such cases we invent a MAC
+	 * address based on urandom.
+	 */
+	memset(sc->sc_ue.ue_eaddr, 0xff, ETHER_ADDR_LEN);
+	
+	/* Check if there is already a MAC address in the register */
+	if ((smsc_read_reg(sc, SMSC_MAC_ADDRL, &mac_l) == 0) &&
+	    (smsc_read_reg(sc, SMSC_MAC_ADDRH, &mac_h) == 0)) {
+		sc->sc_ue.ue_eaddr[5] = (uint8_t)((mac_h >> 8) & 0xff);
+		sc->sc_ue.ue_eaddr[4] = (uint8_t)((mac_h) & 0xff);
+		sc->sc_ue.ue_eaddr[3] = (uint8_t)((mac_l >> 24) & 0xff);
+		sc->sc_ue.ue_eaddr[2] = (uint8_t)((mac_l >> 16) & 0xff);
+		sc->sc_ue.ue_eaddr[1] = (uint8_t)((mac_l >> 8) & 0xff);
+		sc->sc_ue.ue_eaddr[0] = (uint8_t)((mac_l) & 0xff);
+	}
+	
+	/* MAC address is not set so try to read from EEPROM, if that fails generate
+	 * a random MAC address.
+	 */
+	if (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr)) {
+
+		err = smsc_eeprom_read(sc, 0x01, sc->sc_ue.ue_eaddr, ETHER_ADDR_LEN);
+#ifdef FDT
+		if ((err != 0) || (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr)))
+			err = smsc_fdt_find_mac(sc->sc_ue.ue_eaddr);
+#endif
+		if ((err != 0) || (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr))) {
+			read_random(sc->sc_ue.ue_eaddr, ETHER_ADDR_LEN);
+			sc->sc_ue.ue_eaddr[0] &= ~0x01;     /* unicast */
+			sc->sc_ue.ue_eaddr[0] |=  0x02;     /* locally administered */
+		}
+	}
+	
+	/* Initialise the chip for the first time */
+	smsc_chip_init(sc);
+}
+
+
+/**
+ *	smsc_attach_post_sub - Called after the driver attached to the USB interface
+ *	@ue: the USB ethernet device
+ *
+ *	Most of this is boilerplate code and copied from the base USB ethernet
+ *	driver.  It has been overriden so that we can indicate to the system that
+ *	the chip supports H/W checksumming.
+ *
+ *	RETURNS:
+ *	Returns 0 on success or a negative error code.
+ */
+#if __FreeBSD_version > 1000000
+static int
+smsc_attach_post_sub(struct usb_ether *ue)
+{
+	struct smsc_softc *sc;
+	struct ifnet *ifp;
+	int error;
+
+	sc = uether_getsc(ue);
+	ifp = ue->ue_ifp;
+	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
+	ifp->if_start = uether_start;
+	ifp->if_ioctl = smsc_ioctl;
+	ifp->if_init = uether_init;
+	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
+	ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
+	IFQ_SET_READY(&ifp->if_snd);
+
+	/* The chip supports TCP/UDP checksum offloading on TX and RX paths, however
+	 * currently only RX checksum is supported in the driver (see top of file).
+	 */
+	ifp->if_capabilities |= IFCAP_RXCSUM | IFCAP_VLAN_MTU;
+	ifp->if_hwassist = 0;
+	
+	/* TX checksuming is disabled (for now?)
+	ifp->if_capabilities |= IFCAP_TXCSUM;
+	ifp->if_capenable |= IFCAP_TXCSUM;
+	ifp->if_hwassist = CSUM_TCP | CSUM_UDP;
+	*/
+
+	ifp->if_capenable = ifp->if_capabilities;
+
+	mtx_lock(&Giant);
+	error = mii_attach(ue->ue_dev, &ue->ue_miibus, ifp,
+	    uether_ifmedia_upd, ue->ue_methods->ue_mii_sts,
+	    BMSR_DEFCAPMASK, sc->sc_phyno, MII_OFFSET_ANY, 0);
+	mtx_unlock(&Giant);
+
+	return (error);
+}
+#endif /* __FreeBSD_version > 1000000 */
+
+
+/**
+ *	smsc_probe - Probe the interface. 
+ *	@dev: smsc device handle
+ *
+ *	Checks if the device is a match for this driver.
+ *
+ *	RETURNS:
+ *	Returns 0 on success or an error code on failure.
+ */
+static int
+smsc_probe(device_t dev)
+{
+	struct usb_attach_arg *uaa = device_get_ivars(dev);
+
+	if (uaa->usb_mode != USB_MODE_HOST)
+		return (ENXIO);
+	if (uaa->info.bConfigIndex != SMSC_CONFIG_INDEX)
+		return (ENXIO);
+	if (uaa->info.bIfaceIndex != SMSC_IFACE_IDX)
+		return (ENXIO);
+
+	return (usbd_lookup_id_by_uaa(smsc_devs, sizeof(smsc_devs), uaa));
+}
+
+
+/**
+ *	smsc_attach - Attach the interface. 
+ *	@dev: smsc device handle
+ *
+ *	Allocate softc structures, do ifmedia setup and ethernet/BPF attach.
+ *
+ *	RETURNS:
+ *	Returns 0 on success or a negative error code.
+ */
+static int
+smsc_attach(device_t dev)
+{
+	struct usb_attach_arg *uaa = device_get_ivars(dev);
+	struct smsc_softc *sc = device_get_softc(dev);
+	struct usb_ether *ue = &sc->sc_ue;
+	uint8_t iface_index;
+	int err;
+
+	sc->sc_flags = USB_GET_DRIVER_INFO(uaa);
+
+	device_set_usb_desc(dev);
+
+	mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
+
+	/* Setup the endpoints for the SMSC LAN95xx device(s) */
+	iface_index = SMSC_IFACE_IDX;
+	err = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
+	                          smsc_config, SMSC_N_TRANSFER, sc, &sc->sc_mtx);
+	if (err) {
+		device_printf(dev, "error: allocating USB transfers failed\n");
+		goto detach;
+	}
+
+	ue->ue_sc = sc;
+	ue->ue_dev = dev;
+	ue->ue_udev = uaa->device;
+	ue->ue_mtx = &sc->sc_mtx;
+	ue->ue_methods = &smsc_ue_methods;
+
+	err = uether_ifattach(ue);
+	if (err) {
+		device_printf(dev, "error: could not attach interface\n");
+		goto detach;
+	}
+	return (0);			/* success */
+
+detach:
+	smsc_detach(dev);
+	return (ENXIO);		/* failure */
+}
+
+/**
+ *	smsc_detach - Detach the interface. 
+ *	@dev: smsc device handle
+ *
+ *	RETURNS:
+ *	Returns 0.
+ */
+static int
+smsc_detach(device_t dev)
+{
+	struct smsc_softc *sc = device_get_softc(dev);
+	struct usb_ether *ue = &sc->sc_ue;
+
+	usbd_transfer_unsetup(sc->sc_xfer, SMSC_N_TRANSFER);
+	uether_ifdetach(ue);
+	mtx_destroy(&sc->sc_mtx);
+
+	return (0);
+}
+
+static device_method_t smsc_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe, smsc_probe),
+	DEVMETHOD(device_attach, smsc_attach),
+	DEVMETHOD(device_detach, smsc_detach),
+
+	/* bus interface */
+	DEVMETHOD(bus_print_child, bus_generic_print_child),
+	DEVMETHOD(bus_driver_added, bus_generic_driver_added),
+
+	/* MII interface */
+	DEVMETHOD(miibus_readreg, smsc_miibus_readreg),
+	DEVMETHOD(miibus_writereg, smsc_miibus_writereg),
+	DEVMETHOD(miibus_statchg, smsc_miibus_statchg),
+
+	DEVMETHOD_END
+};
+
+static driver_t smsc_driver = {
+	.name = "smsc",
+	.methods = smsc_methods,
+	.size = sizeof(struct smsc_softc),
+};
+
+static devclass_t smsc_devclass;
+
+DRIVER_MODULE(smsc, uhub, smsc_driver, smsc_devclass, NULL, 0);
+DRIVER_MODULE(miibus, smsc, miibus_driver, miibus_devclass, 0, 0);
+MODULE_DEPEND(smsc, uether, 1, 1, 1);
+MODULE_DEPEND(smsc, usb, 1, 1, 1);
+MODULE_DEPEND(smsc, ether, 1, 1, 1);
+MODULE_DEPEND(smsc, miibus, 1, 1, 1);
+MODULE_VERSION(smsc, 1);
+USB_PNP_HOST_INFO(smsc_devs);
diff --git a/freebsd/sys/dev/usb/net/if_smscreg.h b/freebsd/sys/dev/usb/net/if_smscreg.h
new file mode 100644
index 0000000..31a6382
--- /dev/null
+++ b/freebsd/sys/dev/usb/net/if_smscreg.h
@@ -0,0 +1,277 @@
+/*-
+ * Copyright (c) 2012
+ *	Ben Gray <bgray at freebsd.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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY 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 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.
+ *
+ * $FreeBSD$
+ */
+#ifndef _IF_SMSCREG_H_
+#define _IF_SMSCREG_H_
+
+/*
+ * Definitions for the SMSC LAN9514 and LAN9514 USB to ethernet controllers.
+ *
+ * This information was gleaned from the SMSC driver in the linux kernel, where
+ * it is Copyrighted (C) 2007-2008 SMSC.
+ *
+ */
+
+/**
+ * TRANSMIT FRAMES
+ * ---------------
+ *   Tx frames are prefixed with an 8-byte header which describes the frame
+ *
+ *         4 bytes      4 bytes           variable
+ *      +------------+------------+--- . . . . . . . . . . . . ---+
+ *      | TX_CTRL_0  | TX_CTRL_1  |  Ethernet frame data          |
+ *      +------------+------------+--- . . . . . . . . . . . . ---+
+ *
+ *   Where the headers have the following fields:
+ *
+ *      TX_CTRL_0 <20:16>  Data offset
+ *      TX_CTRL_0 <13>     First segment of frame indicator
+ *      TX_CTRL_0 <12>     Last segment of frame indicator
+ *      TX_CTRL_0 <10:0>   Buffer size (?)
+ *
+ *      TX_CTRL_1 <14>     Perform H/W checksuming on IP packets 
+ *      TX_CTRL_1 <13>     Disable automatic ethernet CRC generation
+ *      TX_CTRL_1 <12>     Disable padding (?)
+ *      TX_CTRL_1 <10:0>   Packet byte length
+ *
+ */
+#define SMSC_TX_CTRL_0_OFFSET(x)         (((x) & 0x1FUL) << 16)
+#define SMSC_TX_CTRL_0_FIRST_SEG         (0x1UL << 13)
+#define SMSC_TX_CTRL_0_LAST_SEG          (0x1UL << 12)
+#define SMSC_TX_CTRL_0_BUF_SIZE(x)       ((x) & 0x000007FFUL)
+
+#define SMSC_TX_CTRL_1_CSUM_ENABLE       (0x1UL << 14)
+#define SMSC_TX_CTRL_1_CRC_DISABLE       (0x1UL << 13)
+#define SMSC_TX_CTRL_1_PADDING_DISABLE   (0x1UL << 12)
+#define SMSC_TX_CTRL_1_PKT_LENGTH(x)     ((x) & 0x000007FFUL)
+
+/**
+ * RECEIVE FRAMES
+ * --------------
+ *   Rx frames are prefixed with an 4-byte status header which describes any
+ *   errors with the frame as well as things like the length
+ *
+ *         4 bytes             variable
+ *      +------------+--- . . . . . . . . . . . . ---+
+ *      |   RX_STAT  |  Ethernet frame data          |
+ *      +------------+--- . . . . . . . . . . . . ---+
+ *
+ *   Where the status header has the following fields:
+ *
+ *      RX_STAT   <30>     Filter Fail
+ *      RX_STAT   <29:16>  Frame Length
+ *      RX_STAT   <15>     Error Summary
+ *      RX_STAT   <13>     Broadcast Frame
+ *      RX_STAT   <12>     Length Error
+ *      RX_STAT   <11>     Runt Frame
+ *      RX_STAT   <10>     Multicast Frame
+ *      RX_STAT   <7>      Frame too long
+ *      RX_STAT   <6>      Collision Seen
+ *      RX_STAT   <5>      Frame Type
+ *      RX_STAT   <4>      Receive Watchdog
+ *      RX_STAT   <3>      Mii Error
+ *      RX_STAT   <2>      Dribbling
+ *      RX_STAT   <1>      CRC Error
+ *
+ */
+#define SMSC_RX_STAT_FILTER_FAIL         (0x1UL << 30)
+#define SMSC_RX_STAT_FRM_LENGTH(x)       (((x) >> 16) & 0x3FFFUL)
+#define SMSC_RX_STAT_ERROR               (0x1UL << 15)
+#define SMSC_RX_STAT_BROADCAST           (0x1UL << 13)
+#define SMSC_RX_STAT_LENGTH_ERROR        (0x1UL << 12)
+#define SMSC_RX_STAT_RUNT                (0x1UL << 11)
+#define SMSC_RX_STAT_MULTICAST           (0x1UL << 10)
+#define SMSC_RX_STAT_FRM_TO_LONG         (0x1UL << 7)
+#define SMSC_RX_STAT_COLLISION           (0x1UL << 6)
+#define SMSC_RX_STAT_FRM_TYPE            (0x1UL << 5)
+#define SMSC_RX_STAT_WATCHDOG            (0x1UL << 4)
+#define SMSC_RX_STAT_MII_ERROR           (0x1UL << 3)
+#define SMSC_RX_STAT_DRIBBLING           (0x1UL << 2)
+#define SMSC_RX_STAT_CRC_ERROR           (0x1UL << 1)
+
+/**
+ * REGISTERS
+ *
+ */
+#define SMSC_ID_REV                 0x000
+#define SMSC_INTR_STATUS            0x008
+#define SMSC_RX_CFG                 0x00C
+#define SMSC_TX_CFG                 0x010
+#define SMSC_HW_CFG                 0x014
+#define SMSC_PM_CTRL                0x020
+#define SMSC_LED_GPIO_CFG           0x024
+#define SMSC_GPIO_CFG               0x028
+#define SMSC_AFC_CFG                0x02C
+#define SMSC_EEPROM_CMD             0x030
+#define SMSC_EEPROM_DATA            0x034
+#define SMSC_BURST_CAP              0x038
+#define SMSC_GPIO_WAKE              0x064
+#define SMSC_INTR_CFG               0x068
+#define SMSC_BULK_IN_DLY            0x06C
+#define SMSC_MAC_CSR                0x100
+#define SMSC_MAC_ADDRH              0x104
+#define SMSC_MAC_ADDRL              0x108
+#define SMSC_HASHH                  0x10C
+#define SMSC_HASHL                  0x110
+#define SMSC_MII_ADDR               0x114
+#define SMSC_MII_DATA               0x118
+#define SMSC_FLOW                   0x11C
+#define SMSC_VLAN1                  0x120
+#define SMSC_VLAN2                  0x124
+#define SMSC_WUFF                   0x128
+#define SMSC_WUCSR                  0x12C
+#define SMSC_COE_CTRL               0x130
+
+/* ID / Revision register */
+#define SMSC_ID_REV_CHIP_ID_MASK    0xFFFF0000UL
+#define SMSC_ID_REV_CHIP_REV_MASK   0x0000FFFFUL
+
+#define SMSC_RX_FIFO_FLUSH          (0x1UL << 0)
+
+#define SMSC_TX_CFG_ON              (0x1UL << 2)
+#define SMSC_TX_CFG_STOP            (0x1UL << 1)
+#define SMSC_TX_CFG_FIFO_FLUSH      (0x1UL << 0)
+
+#define SMSC_HW_CFG_BIR             (0x1UL << 12)
+#define SMSC_HW_CFG_LEDB            (0x1UL << 11)
+#define SMSC_HW_CFG_RXDOFF          (0x3UL << 9)    /* RX pkt alignment */
+#define SMSC_HW_CFG_DRP             (0x1UL << 6)
+#define SMSC_HW_CFG_MEF             (0x1UL << 5)
+#define SMSC_HW_CFG_LRST            (0x1UL << 3)    /* Lite reset */
+#define SMSC_HW_CFG_PSEL            (0x1UL << 2)
+#define SMSC_HW_CFG_BCE             (0x1UL << 1)
+#define SMSC_HW_CFG_SRST            (0x1UL << 0)
+
+#define SMSC_PM_CTRL_PHY_RST        (0x1UL << 4)    /* PHY reset */
+
+#define SMSC_LED_GPIO_CFG_SPD_LED   (0x1UL << 24)
+#define SMSC_LED_GPIO_CFG_LNK_LED   (0x1UL << 20)
+#define SMSC_LED_GPIO_CFG_FDX_LED   (0x1UL << 16)
+
+/* Hi watermark = 15.5Kb (~10 mtu pkts) */
+/* low watermark = 3k (~2 mtu pkts) */
+/* backpressure duration = ~ 350us */
+/* Apply FC on any frame. */
+#define AFC_CFG_DEFAULT             (0x00F830A1)
+
+#define SMSC_EEPROM_CMD_BUSY        (0x1UL << 31)
+#define SMSC_EEPROM_CMD_MASK        (0x7UL << 28)
+#define SMSC_EEPROM_CMD_READ        (0x0UL << 28)
+#define SMSC_EEPROM_CMD_WRITE       (0x3UL << 28)
+#define SMSC_EEPROM_CMD_ERASE       (0x5UL << 28)
+#define SMSC_EEPROM_CMD_RELOAD      (0x7UL << 28)
+#define SMSC_EEPROM_CMD_TIMEOUT     (0x1UL << 10)
+#define SMSC_EEPROM_CMD_ADDR_MASK   0x000001FFUL
+
+/* MAC Control and Status Register */
+#define SMSC_MAC_CSR_RCVOWN         (0x1UL << 23)  /* Half duplex */
+#define SMSC_MAC_CSR_LOOPBK         (0x1UL << 21)  /* Loopback */
+#define SMSC_MAC_CSR_FDPX           (0x1UL << 20)  /* Full duplex */
+#define SMSC_MAC_CSR_MCPAS          (0x1UL << 19)  /* Multicast mode */
+#define SMSC_MAC_CSR_PRMS           (0x1UL << 18)  /* Promiscuous mode */
+#define SMSC_MAC_CSR_INVFILT        (0x1UL << 17)  /* Inverse filtering */
+#define SMSC_MAC_CSR_PASSBAD        (0x1UL << 16)  /* Pass on bad frames */
+#define SMSC_MAC_CSR_HPFILT         (0x1UL << 13)  /* Hash filtering */
+#define SMSC_MAC_CSR_BCAST          (0x1UL << 11)  /* Broadcast */
+#define SMSC_MAC_CSR_TXEN           (0x1UL << 3)   /* TX enable */
+#define SMSC_MAC_CSR_RXEN           (0x1UL << 2)   /* RX enable */
+
+/* Interrupt control register */
+#define SMSC_INTR_NTEP              (0x1UL << 31) 
+#define SMSC_INTR_MACRTO            (0x1UL << 19)
+#define SMSC_INTR_TX_STOP           (0x1UL << 17)
+#define SMSC_INTR_RX_STOP           (0x1UL << 16)
+#define SMSC_INTR_PHY_INT           (0x1UL << 15)
+#define SMSC_INTR_TXE               (0x1UL << 14)
+#define SMSC_INTR_TDFU              (0x1UL << 13)
+#define SMSC_INTR_TDFO              (0x1UL << 12)
+#define SMSC_INTR_RXDF              (0x1UL << 11)
+#define SMSC_INTR_GPIOS             0x000007FFUL
+
+/* Phy MII interface register */
+#define SMSC_MII_WRITE              (0x1UL << 1)
+#define SMSC_MII_READ               (0x0UL << 1)
+#define SMSC_MII_BUSY               (0x1UL << 0)
+
+/* H/W checksum register */
+#define SMSC_COE_CTRL_TX_EN         (0x1UL << 16)  /* Tx H/W csum enable */
+#define SMSC_COE_CTRL_RX_MODE       (0x1UL << 1)
+#define SMSC_COE_CTRL_RX_EN         (0x1UL << 0)   /* Rx H/W csum enable */
+
+/* Registers on the phy, accessed via MII/MDIO */
+#define SMSC_PHY_INTR_STAT          (29)
+#define SMSC_PHY_INTR_MASK          (30)
+
+#define SMSC_PHY_INTR_ENERGY_ON     (0x1U << 7)
+#define SMSC_PHY_INTR_ANEG_COMP     (0x1U << 6)
+#define SMSC_PHY_INTR_REMOTE_FAULT  (0x1U << 5)
+#define SMSC_PHY_INTR_LINK_DOWN     (0x1U << 4)
+
+/* USB Vendor Requests */
+#define SMSC_UR_WRITE_REG   0xA0
+#define SMSC_UR_READ_REG    0xA1
+#define SMSC_UR_GET_STATS   0xA2
+
+#define	SMSC_CONFIG_INDEX	0	/* config number 1 */
+#define	SMSC_IFACE_IDX		0
+
+/*
+ * USB endpoints.
+ */
+enum {
+	SMSC_BULK_DT_RD,
+	SMSC_BULK_DT_WR,
+	/* the LAN9514 device does support interrupt endpoints, however I couldn't
+	 * get then to work reliably and since they are unneeded (poll the mii
+	 * status) they are unused.
+	 * SMSC_INTR_DT_WR,
+	 * SMSC_INTR_DT_RD,
+	 */
+	SMSC_N_TRANSFER,
+};
+
+struct smsc_softc {
+	struct usb_ether  sc_ue;
+	struct mtx        sc_mtx;
+	struct usb_xfer  *sc_xfer[SMSC_N_TRANSFER];
+	int               sc_phyno;
+
+	/* The following stores the settings in the mac control (MAC_CSR) register */
+	uint32_t          sc_mac_csr;
+	uint32_t          sc_rev_id;
+
+	uint32_t          sc_flags;
+#define	SMSC_FLAG_LINK      0x0001
+#define	SMSC_FLAG_LAN9514   0x1000	/* LAN9514 */
+};
+
+#define	SMSC_LOCK(_sc)             mtx_lock(&(_sc)->sc_mtx)
+#define	SMSC_UNLOCK(_sc)           mtx_unlock(&(_sc)->sc_mtx)
+#define	SMSC_LOCK_ASSERT(_sc, t)   mtx_assert(&(_sc)->sc_mtx, t)
+
+#endif  /* _IF_SMSCREG_H_ */
diff --git a/freebsd/sys/dev/usb/net/usb_ethernet.c b/freebsd/sys/dev/usb/net/usb_ethernet.c
new file mode 100644
index 0000000..0d9185d
--- /dev/null
+++ b/freebsd/sys/dev/usb/net/usb_ethernet.c
@@ -0,0 +1,647 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+/* $FreeBSD$ */
+/*-
+ * Copyright (c) 2009 Andrew Thompson (thompsa at FreeBSD.org)
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <rtems/bsd/sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/condvar.h>
+#include <sys/kernel.h>
+#include <rtems/bsd/sys/lock.h>
+#include <sys/malloc.h>
+#include <sys/mbuf.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/socket.h>
+#include <sys/sockio.h>
+#include <sys/sysctl.h>
+#include <sys/sx.h>
+
+#include <net/if.h>
+#include <net/if_var.h>
+#include <net/ethernet.h>
+#include <net/if_types.h>
+#include <net/if_media.h>
+#include <net/if_vlan_var.h>
+
+#include <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+
+#include <dev/usb/usb.h>
+#include <dev/usb/usbdi.h>
+
+#include <dev/usb/usb_process.h>
+#include <dev/usb/net/usb_ethernet.h>
+
+static SYSCTL_NODE(_net, OID_AUTO, ue, CTLFLAG_RD, 0,
+    "USB Ethernet parameters");
+
+#define	UE_LOCK(_ue)		mtx_lock((_ue)->ue_mtx)
+#define	UE_UNLOCK(_ue)		mtx_unlock((_ue)->ue_mtx)
+#define	UE_LOCK_ASSERT(_ue, t)	mtx_assert((_ue)->ue_mtx, t)
+
+MODULE_DEPEND(uether, usb, 1, 1, 1);
+MODULE_DEPEND(uether, miibus, 1, 1, 1);
+
+static struct unrhdr *ueunit;
+
+static usb_proc_callback_t ue_attach_post_task;
+static usb_proc_callback_t ue_promisc_task;
+static usb_proc_callback_t ue_setmulti_task;
+static usb_proc_callback_t ue_ifmedia_task;
+static usb_proc_callback_t ue_tick_task;
+static usb_proc_callback_t ue_start_task;
+static usb_proc_callback_t ue_stop_task;
+
+static void	ue_init(void *);
+static void	ue_start(struct ifnet *);
+static int	ue_ifmedia_upd(struct ifnet *);
+static void	ue_watchdog(void *);
+
+/*
+ * Return values:
+ *    0: success
+ * Else: device has been detached
+ */
+uint8_t
+uether_pause(struct usb_ether *ue, unsigned int _ticks)
+{
+	if (usb_proc_is_gone(&ue->ue_tq)) {
+		/* nothing to do */
+		return (1);
+	}
+	usb_pause_mtx(ue->ue_mtx, _ticks);
+	return (0);
+}
+
+static void
+ue_queue_command(struct usb_ether *ue,
+    usb_proc_callback_t *fn,
+    struct usb_proc_msg *t0, struct usb_proc_msg *t1)
+{
+	struct usb_ether_cfg_task *task;
+
+	UE_LOCK_ASSERT(ue, MA_OWNED);
+
+	if (usb_proc_is_gone(&ue->ue_tq)) {
+		return;         /* nothing to do */
+	}
+	/* 
+	 * NOTE: The task cannot get executed before we drop the
+	 * "sc_mtx" mutex. It is safe to update fields in the message
+	 * structure after that the message got queued.
+	 */
+	task = (struct usb_ether_cfg_task *)
+	  usb_proc_msignal(&ue->ue_tq, t0, t1);
+
+	/* Setup callback and self pointers */
+	task->hdr.pm_callback = fn;
+	task->ue = ue;
+
+	/*
+	 * Start and stop must be synchronous!
+	 */
+	if ((fn == ue_start_task) || (fn == ue_stop_task))
+		usb_proc_mwait(&ue->ue_tq, t0, t1);
+}
+
+struct ifnet *
+uether_getifp(struct usb_ether *ue)
+{
+	return (ue->ue_ifp);
+}
+
+struct mii_data *
+uether_getmii(struct usb_ether *ue)
+{
+	return (device_get_softc(ue->ue_miibus));
+}
+
+void *
+uether_getsc(struct usb_ether *ue)
+{
+	return (ue->ue_sc);
+}
+
+static int
+ue_sysctl_parent(SYSCTL_HANDLER_ARGS)
+{
+	struct usb_ether *ue = arg1;
+	const char *name;
+
+	name = device_get_nameunit(ue->ue_dev);
+	return SYSCTL_OUT_STR(req, name);
+}
+
+int
+uether_ifattach(struct usb_ether *ue)
+{
+	int error;
+
+	/* check some critical parameters */
+	if ((ue->ue_dev == NULL) ||
+	    (ue->ue_udev == NULL) ||
+	    (ue->ue_mtx == NULL) ||
+	    (ue->ue_methods == NULL))
+		return (EINVAL);
+
+	error = usb_proc_create(&ue->ue_tq, ue->ue_mtx, 
+	    device_get_nameunit(ue->ue_dev), USB_PRI_MED);
+	if (error) {
+		device_printf(ue->ue_dev, "could not setup taskqueue\n");
+		goto error;
+	}
+
+	/* fork rest of the attach code */
+	UE_LOCK(ue);
+	ue_queue_command(ue, ue_attach_post_task,
+	    &ue->ue_sync_task[0].hdr,
+	    &ue->ue_sync_task[1].hdr);
+	UE_UNLOCK(ue);
+
+error:
+	return (error);
+}
+
+static void
+ue_attach_post_task(struct usb_proc_msg *_task)
+{
+	struct usb_ether_cfg_task *task =
+	    (struct usb_ether_cfg_task *)_task;
+	struct usb_ether *ue = task->ue;
+	struct ifnet *ifp;
+	int error;
+	char num[14];			/* sufficient for 32 bits */
+
+	/* first call driver's post attach routine */
+	ue->ue_methods->ue_attach_post(ue);
+
+	UE_UNLOCK(ue);
+
+	ue->ue_unit = alloc_unr(ueunit);
+	usb_callout_init_mtx(&ue->ue_watchdog, ue->ue_mtx, 0);
+	sysctl_ctx_init(&ue->ue_sysctl_ctx);
+
+	error = 0;
+	CURVNET_SET_QUIET(vnet0);
+	ifp = if_alloc(IFT_ETHER);
+	if (ifp == NULL) {
+		device_printf(ue->ue_dev, "could not allocate ifnet\n");
+		goto fail;
+	}
+
+	ifp->if_softc = ue;
+	if_initname(ifp, "ue", ue->ue_unit);
+	if (ue->ue_methods->ue_attach_post_sub != NULL) {
+		ue->ue_ifp = ifp;
+		error = ue->ue_methods->ue_attach_post_sub(ue);
+	} else {
+		ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
+		if (ue->ue_methods->ue_ioctl != NULL)
+			ifp->if_ioctl = ue->ue_methods->ue_ioctl;
+		else
+			ifp->if_ioctl = uether_ioctl;
+		ifp->if_start = ue_start;
+		ifp->if_init = ue_init;
+		IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
+		ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
+		IFQ_SET_READY(&ifp->if_snd);
+		ue->ue_ifp = ifp;
+
+		if (ue->ue_methods->ue_mii_upd != NULL &&
+		    ue->ue_methods->ue_mii_sts != NULL) {
+			/* device_xxx() depends on this */
+			mtx_lock(&Giant);
+			error = mii_attach(ue->ue_dev, &ue->ue_miibus, ifp,
+			    ue_ifmedia_upd, ue->ue_methods->ue_mii_sts,
+			    BMSR_DEFCAPMASK, MII_PHY_ANY, MII_OFFSET_ANY, 0);
+			mtx_unlock(&Giant);
+		}
+	}
+
+	if (error) {
+		device_printf(ue->ue_dev, "attaching PHYs failed\n");
+		goto fail;
+	}
+
+	if_printf(ifp, "<USB Ethernet> on %s\n", device_get_nameunit(ue->ue_dev));
+	ether_ifattach(ifp, ue->ue_eaddr);
+	/* Tell upper layer we support VLAN oversized frames. */
+	if (ifp->if_capabilities & IFCAP_VLAN_MTU)
+		ifp->if_hdrlen = sizeof(struct ether_vlan_header);
+
+	CURVNET_RESTORE();
+
+	snprintf(num, sizeof(num), "%u", ue->ue_unit);
+	ue->ue_sysctl_oid = SYSCTL_ADD_NODE(&ue->ue_sysctl_ctx,
+	    &SYSCTL_NODE_CHILDREN(_net, ue),
+	    OID_AUTO, num, CTLFLAG_RD, NULL, "");
+	SYSCTL_ADD_PROC(&ue->ue_sysctl_ctx,
+	    SYSCTL_CHILDREN(ue->ue_sysctl_oid), OID_AUTO,
+	    "%parent", CTLTYPE_STRING | CTLFLAG_RD, ue, 0,
+	    ue_sysctl_parent, "A", "parent device");
+
+	UE_LOCK(ue);
+	return;
+
+fail:
+	CURVNET_RESTORE();
+	free_unr(ueunit, ue->ue_unit);
+	if (ue->ue_ifp != NULL) {
+		if_free(ue->ue_ifp);
+		ue->ue_ifp = NULL;
+	}
+	UE_LOCK(ue);
+	return;
+}
+
+void
+uether_ifdetach(struct usb_ether *ue)
+{
+	struct ifnet *ifp;
+
+	/* wait for any post attach or other command to complete */
+	usb_proc_drain(&ue->ue_tq);
+
+	/* read "ifnet" pointer after taskqueue drain */
+	ifp = ue->ue_ifp;
+
+	if (ifp != NULL) {
+
+		/* we are not running any more */
+		UE_LOCK(ue);
+		ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
+		UE_UNLOCK(ue);
+
+		/* drain any callouts */
+		usb_callout_drain(&ue->ue_watchdog);
+
+		/* detach miibus */
+		if (ue->ue_miibus != NULL) {
+			mtx_lock(&Giant);	/* device_xxx() depends on this */
+			device_delete_child(ue->ue_dev, ue->ue_miibus);
+			mtx_unlock(&Giant);
+		}
+
+		/* detach ethernet */
+		ether_ifdetach(ifp);
+
+		/* free interface instance */
+		if_free(ifp);
+
+		/* free sysctl */
+		sysctl_ctx_free(&ue->ue_sysctl_ctx);
+
+		/* free unit */
+		free_unr(ueunit, ue->ue_unit);
+	}
+
+	/* free taskqueue, if any */
+	usb_proc_free(&ue->ue_tq);
+}
+
+uint8_t
+uether_is_gone(struct usb_ether *ue)
+{
+	return (usb_proc_is_gone(&ue->ue_tq));
+}
+
+void
+uether_init(void *arg)
+{
+
+	ue_init(arg);
+}
+
+static void
+ue_init(void *arg)
+{
+	struct usb_ether *ue = arg;
+
+	UE_LOCK(ue);
+	ue_queue_command(ue, ue_start_task,
+	    &ue->ue_sync_task[0].hdr, 
+	    &ue->ue_sync_task[1].hdr);
+	UE_UNLOCK(ue);
+}
+
+static void
+ue_start_task(struct usb_proc_msg *_task)
+{
+	struct usb_ether_cfg_task *task =
+	    (struct usb_ether_cfg_task *)_task;
+	struct usb_ether *ue = task->ue;
+	struct ifnet *ifp = ue->ue_ifp;
+
+	UE_LOCK_ASSERT(ue, MA_OWNED);
+
+	ue->ue_methods->ue_init(ue);
+
+	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
+		return;
+
+	if (ue->ue_methods->ue_tick != NULL)
+		usb_callout_reset(&ue->ue_watchdog, hz, ue_watchdog, ue);
+}
+
+static void
+ue_stop_task(struct usb_proc_msg *_task)
+{
+	struct usb_ether_cfg_task *task =
+	    (struct usb_ether_cfg_task *)_task;
+	struct usb_ether *ue = task->ue;
+
+	UE_LOCK_ASSERT(ue, MA_OWNED);
+
+	usb_callout_stop(&ue->ue_watchdog);
+
+	ue->ue_methods->ue_stop(ue);
+}
+
+void
+uether_start(struct ifnet *ifp)
+{
+
+	ue_start(ifp);
+}
+
+static void
+ue_start(struct ifnet *ifp)
+{
+	struct usb_ether *ue = ifp->if_softc;
+
+	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
+		return;
+
+	UE_LOCK(ue);
+	ue->ue_methods->ue_start(ue);
+	UE_UNLOCK(ue);
+}
+
+static void
+ue_promisc_task(struct usb_proc_msg *_task)
+{
+	struct usb_ether_cfg_task *task =
+	    (struct usb_ether_cfg_task *)_task;
+	struct usb_ether *ue = task->ue;
+
+	ue->ue_methods->ue_setpromisc(ue);
+}
+
+static void
+ue_setmulti_task(struct usb_proc_msg *_task)
+{
+	struct usb_ether_cfg_task *task =
+	    (struct usb_ether_cfg_task *)_task;
+	struct usb_ether *ue = task->ue;
+
+	ue->ue_methods->ue_setmulti(ue);
+}
+
+int
+uether_ifmedia_upd(struct ifnet *ifp)
+{
+
+	return (ue_ifmedia_upd(ifp));
+}
+
+static int
+ue_ifmedia_upd(struct ifnet *ifp)
+{
+	struct usb_ether *ue = ifp->if_softc;
+
+	/* Defer to process context */
+	UE_LOCK(ue);
+	ue_queue_command(ue, ue_ifmedia_task,
+	    &ue->ue_media_task[0].hdr,
+	    &ue->ue_media_task[1].hdr);
+	UE_UNLOCK(ue);
+
+	return (0);
+}
+
+static void
+ue_ifmedia_task(struct usb_proc_msg *_task)
+{
+	struct usb_ether_cfg_task *task =
+	    (struct usb_ether_cfg_task *)_task;
+	struct usb_ether *ue = task->ue;
+	struct ifnet *ifp = ue->ue_ifp;
+
+	ue->ue_methods->ue_mii_upd(ifp);
+}
+
+static void
+ue_watchdog(void *arg)
+{
+	struct usb_ether *ue = arg;
+	struct ifnet *ifp = ue->ue_ifp;
+
+	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
+		return;
+
+	ue_queue_command(ue, ue_tick_task,
+	    &ue->ue_tick_task[0].hdr, 
+	    &ue->ue_tick_task[1].hdr);
+
+	usb_callout_reset(&ue->ue_watchdog, hz, ue_watchdog, ue);
+}
+
+static void
+ue_tick_task(struct usb_proc_msg *_task)
+{
+	struct usb_ether_cfg_task *task =
+	    (struct usb_ether_cfg_task *)_task;
+	struct usb_ether *ue = task->ue;
+	struct ifnet *ifp = ue->ue_ifp;
+
+	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
+		return;
+
+	ue->ue_methods->ue_tick(ue);
+}
+
+int
+uether_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
+{
+	struct usb_ether *ue = ifp->if_softc;
+	struct ifreq *ifr = (struct ifreq *)data;
+	struct mii_data *mii;
+	int error = 0;
+
+	switch (command) {
+	case SIOCSIFFLAGS:
+		UE_LOCK(ue);
+		if (ifp->if_flags & IFF_UP) {
+			if (ifp->if_drv_flags & IFF_DRV_RUNNING)
+				ue_queue_command(ue, ue_promisc_task,
+				    &ue->ue_promisc_task[0].hdr, 
+				    &ue->ue_promisc_task[1].hdr);
+			else
+				ue_queue_command(ue, ue_start_task,
+				    &ue->ue_sync_task[0].hdr, 
+				    &ue->ue_sync_task[1].hdr);
+		} else {
+			ue_queue_command(ue, ue_stop_task,
+			    &ue->ue_sync_task[0].hdr, 
+			    &ue->ue_sync_task[1].hdr);
+		}
+		UE_UNLOCK(ue);
+		break;
+	case SIOCADDMULTI:
+	case SIOCDELMULTI:
+		UE_LOCK(ue);
+		ue_queue_command(ue, ue_setmulti_task,
+		    &ue->ue_multi_task[0].hdr, 
+		    &ue->ue_multi_task[1].hdr);
+		UE_UNLOCK(ue);
+		break;
+	case SIOCGIFMEDIA:
+	case SIOCSIFMEDIA:
+		if (ue->ue_miibus != NULL) {
+			mii = device_get_softc(ue->ue_miibus);
+			error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
+		} else
+			error = ether_ioctl(ifp, command, data);
+		break;
+	default:
+		error = ether_ioctl(ifp, command, data);
+		break;
+	}
+	return (error);
+}
+
+static int
+uether_modevent(module_t mod, int type, void *data)
+{
+
+	switch (type) {
+	case MOD_LOAD:
+		ueunit = new_unrhdr(0, INT_MAX, NULL);
+		break;
+	case MOD_UNLOAD:
+		break;
+	default:
+		return (EOPNOTSUPP);
+	}
+	return (0);
+}
+static moduledata_t uether_mod = {
+	"uether",
+	uether_modevent,
+	0
+};
+
+struct mbuf *
+uether_newbuf(void)
+{
+	struct mbuf *m_new;
+
+	m_new = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
+	if (m_new == NULL)
+		return (NULL);
+	m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
+
+	m_adj(m_new, ETHER_ALIGN);
+	return (m_new);
+}
+
+int
+uether_rxmbuf(struct usb_ether *ue, struct mbuf *m, 
+    unsigned int len)
+{
+	struct ifnet *ifp = ue->ue_ifp;
+
+	UE_LOCK_ASSERT(ue, MA_OWNED);
+
+	/* finalize mbuf */
+	if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
+	m->m_pkthdr.rcvif = ifp;
+	m->m_pkthdr.len = m->m_len = len;
+
+	/* enqueue for later when the lock can be released */
+	_IF_ENQUEUE(&ue->ue_rxq, m);
+	return (0);
+}
+
+int
+uether_rxbuf(struct usb_ether *ue, struct usb_page_cache *pc, 
+    unsigned int offset, unsigned int len)
+{
+	struct ifnet *ifp = ue->ue_ifp;
+	struct mbuf *m;
+
+	UE_LOCK_ASSERT(ue, MA_OWNED);
+
+	if (len < ETHER_HDR_LEN || len > MCLBYTES - ETHER_ALIGN)
+		return (1);
+
+	m = uether_newbuf();
+	if (m == NULL) {
+		if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
+		return (ENOMEM);
+	}
+
+	usbd_copy_out(pc, offset, mtod(m, uint8_t *), len);
+
+	/* finalize mbuf */
+	if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
+	m->m_pkthdr.rcvif = ifp;
+	m->m_pkthdr.len = m->m_len = len;
+
+	/* enqueue for later when the lock can be released */
+	_IF_ENQUEUE(&ue->ue_rxq, m);
+	return (0);
+}
+
+void
+uether_rxflush(struct usb_ether *ue)
+{
+	struct ifnet *ifp = ue->ue_ifp;
+	struct mbuf *m;
+
+	UE_LOCK_ASSERT(ue, MA_OWNED);
+
+	for (;;) {
+		_IF_DEQUEUE(&ue->ue_rxq, m);
+		if (m == NULL)
+			break;
+
+		/*
+		 * The USB xfer has been resubmitted so its safe to unlock now.
+		 */
+		UE_UNLOCK(ue);
+		ifp->if_input(ifp, m);
+		UE_LOCK(ue);
+	}
+}
+
+DECLARE_MODULE(uether, uether_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
+MODULE_VERSION(uether, 1);
diff --git a/freebsd/sys/dev/usb/net/usb_ethernet.h b/freebsd/sys/dev/usb/net/usb_ethernet.h
new file mode 100644
index 0000000..09a48e2
--- /dev/null
+++ b/freebsd/sys/dev/usb/net/usb_ethernet.h
@@ -0,0 +1,127 @@
+/* $FreeBSD$ */
+/*-
+ * Copyright (c) 2008 Hans Petter Selasky. 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.
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _USB_ETHERNET_H_
+#define	_USB_ETHERNET_H_
+
+#include <rtems/bsd/local/opt_inet.h>
+
+#include <rtems/bsd/sys/param.h>
+#include <sys/systm.h>
+#include <sys/mbuf.h>
+#include <sys/socket.h>
+#include <sys/sockio.h>
+#include <sys/limits.h>
+
+#include <net/if.h>
+#include <net/if_arp.h>
+#include <net/if_dl.h>
+#include <net/if_media.h>
+#include <net/if_types.h>
+#include <net/bpf.h>
+#include <net/ethernet.h>
+
+#include <rtems/bsd/local/miibus_if.h>
+
+#include <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+
+struct usb_ether;
+struct usb_device_request;
+
+typedef void (uether_fn_t)(struct usb_ether *);
+
+struct usb_ether_methods {
+	uether_fn_t		*ue_attach_post;
+	uether_fn_t		*ue_start;
+	uether_fn_t		*ue_init;
+	uether_fn_t		*ue_stop;
+	uether_fn_t		*ue_setmulti;
+	uether_fn_t		*ue_setpromisc;
+	uether_fn_t		*ue_tick;
+	int			(*ue_mii_upd)(struct ifnet *);
+	void			(*ue_mii_sts)(struct ifnet *,
+				    struct ifmediareq *);
+	int			(*ue_ioctl)(struct ifnet *, u_long, caddr_t);
+	int			(*ue_attach_post_sub)(struct usb_ether *);
+};
+
+struct usb_ether_cfg_task {
+	struct usb_proc_msg hdr;
+	struct usb_ether *ue;
+};
+
+struct usb_ether {
+	/* NOTE: the "ue_ifp" pointer must be first --hps */
+	struct ifnet		*ue_ifp;
+	struct mtx		*ue_mtx;
+	const struct usb_ether_methods *ue_methods;
+	struct sysctl_oid	*ue_sysctl_oid;
+	void			*ue_sc;
+	struct usb_device	*ue_udev; /* used by uether_do_request() */
+	device_t		ue_dev;
+	device_t		ue_miibus;
+
+	struct usb_process	ue_tq;
+	struct sysctl_ctx_list	ue_sysctl_ctx;
+	struct ifqueue		ue_rxq;
+	struct usb_callout	ue_watchdog;
+	struct usb_ether_cfg_task	ue_sync_task[2];
+	struct usb_ether_cfg_task	ue_media_task[2];
+	struct usb_ether_cfg_task	ue_multi_task[2];
+	struct usb_ether_cfg_task	ue_promisc_task[2];
+	struct usb_ether_cfg_task	ue_tick_task[2];
+
+	int			ue_unit;
+
+	/* ethernet address from eeprom */
+	uint8_t			ue_eaddr[ETHER_ADDR_LEN];
+};
+
+#define	uether_do_request(ue,req,data,timo) \
+    usbd_do_request_proc((ue)->ue_udev,&(ue)->ue_tq,req,data,0,NULL,timo)
+
+uint8_t		uether_pause(struct usb_ether *, unsigned int);
+struct ifnet	*uether_getifp(struct usb_ether *);
+struct mii_data *uether_getmii(struct usb_ether *);
+void		*uether_getsc(struct usb_ether *);
+int		uether_ifattach(struct usb_ether *);
+void		uether_ifdetach(struct usb_ether *);
+int		uether_ifmedia_upd(struct ifnet *);
+void		uether_init(void *);
+int		uether_ioctl(struct ifnet *, u_long, caddr_t);
+struct mbuf	*uether_newbuf(void);
+int		uether_rxmbuf(struct usb_ether *, struct mbuf *, 
+		    unsigned int);
+int		uether_rxbuf(struct usb_ether *,
+		    struct usb_page_cache *, 
+		    unsigned int, unsigned int);
+void		uether_rxflush(struct usb_ether *);
+uint8_t		uether_is_gone(struct usb_ether *);
+void		uether_start(struct ifnet *);
+#endif					/* _USB_ETHERNET_H_ */
diff --git a/libbsd.py b/libbsd.py
index e1e0005..80e810c 100755
--- a/libbsd.py
+++ b/libbsd.py
@@ -619,13 +619,15 @@ def dev_usb_net(mm):
         [
             'sys/dev/mii/mii.h',
             'sys/dev/mii/miivar.h',
-            'sys/dev/usb/net/if_cdcereg.h',
+            # 'sys/dev/usb/net/if_cdcereg.h',
+            'sys/dev/usb/net/if_smscreg.h',
             'sys/dev/usb/net/usb_ethernet.h',
         ]
     )
     mod.addKernelSpaceSourceFiles(
         [
-            'sys/dev/usb/net/if_cdce.c',
+            # 'sys/dev/usb/net/if_cdce.c',
+            'sys/dev/usb/net/if_smsc.c',
             'sys/dev/usb/net/usb_ethernet.c',
         ],
         mm.generator['source']()
@@ -2670,7 +2672,7 @@ def sources(mm):
     #mm.addModule(dev_usb_input(mm))
     #mm.addModule(dev_usb_mouse(mm))
     #mm.addModule(dev_usb_serial(mm))
-    #mm.addModule(dev_usb_net(mm))
+    mm.addModule(dev_usb_net(mm))
     #mm.addModule(dev_usb_wlan(mm))
 
     mm.addModule(cam(mm))
diff --git a/libbsd.txt b/libbsd.txt
index d18f77b..344c83c 100644
--- a/libbsd.txt
+++ b/libbsd.txt
@@ -740,6 +740,7 @@ detail and debug level information from the command.
 . *, stable/9, 2015-04-08, 99a648a912e81e29d9c4c159cbbe263462f2d719
 . sys/arm/broadcom/bcm2835/bcm283x_dwc_fdt.c, trunk, 2016-05-26, a7019c8505c0592f2e80ac63be139075d8977c4e
 . sys/dev/usb/controller/dwc_otg_fdt.*, trunk, 2016-05-26, a7019c8505c0592f2e80ac63be139075d8977c4e
+. sys/dev/usb/net/*, trunk, 2016-05-26, a7019c8505c0592f2e80ac63be139075d8977c4e
 
 == How to import code from FreeBSD
 
diff --git a/libbsd_waf.py b/libbsd_waf.py
index 8c59ef9..1cdd767 100644
--- a/libbsd_waf.py
+++ b/libbsd_waf.py
@@ -785,6 +785,8 @@ def build(bld):
               'freebsd/sys/dev/usb/controller/ehci.c',
               'freebsd/sys/dev/usb/controller/ohci.c',
               'freebsd/sys/dev/usb/controller/usb_controller.c',
+              'freebsd/sys/dev/usb/net/if_smsc.c',
+              'freebsd/sys/dev/usb/net/usb_ethernet.c',
               'freebsd/sys/dev/usb/quirk/usb_quirk.c',
               'freebsd/sys/dev/usb/storage/umass.c',
               'freebsd/sys/dev/usb/usb_busdma.c',
-- 
2.7.4




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