Add support for new USB to ethernet controller:

Moschip MCS7730/MCS7830

Submitted by:	Rick van der Zwet <info@rickvanderzwet.nl>
Approved by:	thompsa (mentor)

2 files changed, 1199 insertions, 0 deletions

diff --git a/sys/dev/usb/net/if_mos.c b/sys/dev/usb/net/if_mos.c
new file mode 100644
index 0000000..434cb89
--- /dev/null
+++ b/sys/dev/usb/net/if_mos.c
@@ -0,0 +1,1024 @@
+/*-
+ * Copyright (c) 2011 Rick van der Zwet <info@rickvanderzwet.nl>
+ *
+ * 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) 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>
+__FBSDID("$FreeBSD$");
+
+/*
+ * 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
+ */
+
+/*
+ * The FreeBSD if_mos.c driver is based on various different sources:
+ * The vendor provided driver at the following URL:
+ * http://www.moschip.com/data/products/MCS7830/Driver_FreeBSD_7830.tar.gz
+ *
+ * Mixed together with the OpenBSD if_mos.c driver for validation and checking
+ * and the FreeBSD if_reu.c as reference for the USB Ethernet framework.
+ */
+
+#include <sys/stdint.h>
+#include <sys/stddef.h>
+#include <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/linker_set.h>
+#include <sys/module.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/condvar.h>
+#include <sys/sysctl.h>
+#include <sys/sx.h>
+#include <sys/unistd.h>
+#include <sys/callout.h>
+#include <sys/malloc.h>
+#include <sys/priv.h>
+
+#include <dev/usb/usb.h>
+#include <dev/usb/usbdi.h>
+#include <dev/usb/usbdi_util.h>
+#include "usbdevs.h"
+
+#define	USB_DEBUG_VAR mos_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_mosreg.h>
+#include "if_mosreg.h"
+
+#ifdef USB_DEBUG
+static int mos_debug = 0;
+
+SYSCTL_NODE(_hw_usb, OID_AUTO, mos, CTLFLAG_RW, 0, "USB mos");
+SYSCTL_INT(_hw_usb_mos, OID_AUTO, debug, CTLFLAG_RW, &mos_debug, 0,
+    "Debug level");
+#endif
+
+#define MOS_DPRINTFN(fmt,...) \
+  DPRINTF("mos: %s: " fmt "\n",__FUNCTION__,## __VA_ARGS__)
+
+#define	USB_PRODUCT_MOSCHIP_MCS7730	0x7730
+#define	USB_PRODUCT_SITECOMEU_LN030	0x0021
+
+
+
+/* Various supported device vendors/products. */
+static const struct usb_device_id mos_devs[] = {
+	{USB_VPI(USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7730, MCS7730)},
+	{USB_VPI(USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7830, MCS7830)},
+	{USB_VPI(USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_LN030, MCS7830)},
+};
+
+static int mos_probe(device_t dev);
+static int mos_attach(device_t dev);
+static void mos_attach_post(struct usb_ether *ue);
+static int mos_detach(device_t dev);
+
+static void mos_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error);
+static void mos_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error);
+static void mos_intr_callback(struct usb_xfer *xfer, usb_error_t error);
+static void mos_tick(struct usb_ether *);
+static void mos_start(struct usb_ether *);
+static void mos_init(struct usb_ether *);
+static void mos_chip_init(struct mos_softc *);
+static void mos_stop(struct usb_ether *);
+static int mos_miibus_readreg(device_t, int, int);
+static int mos_miibus_writereg(device_t, int, int, int);
+static void mos_miibus_statchg(device_t);
+static int mos_ifmedia_upd(struct ifnet *);
+static void mos_ifmedia_sts(struct ifnet *, struct ifmediareq *);
+static void mos_reset(struct mos_softc *sc);
+
+static int mos_reg_read_1(struct mos_softc *, int);
+static int mos_reg_read_2(struct mos_softc *, int);
+static int mos_reg_write_1(struct mos_softc *, int, int);
+static int mos_reg_write_2(struct mos_softc *, int, int);
+static int mos_readmac(struct mos_softc *, uint8_t *);
+static int mos_writemac(struct mos_softc *, uint8_t *);
+static int mos_write_mcast(struct mos_softc *, u_char *);
+
+static void mos_setmulti(struct usb_ether *);
+static void mos_setpromisc(struct usb_ether *);
+
+static const struct usb_config mos_config[MOS_ENDPT_MAX] = {
+
+	[MOS_ENDPT_TX] = {
+		.type = UE_BULK,
+		.endpoint = UE_ADDR_ANY,
+		.direction = UE_DIR_OUT,
+		.bufsize = (MCLBYTES + 2),
+		.flags = {.pipe_bof = 1,.force_short_xfer = 1,},
+		.callback = mos_bulk_write_callback,
+		.timeout = 10000,
+	},
+
+	[MOS_ENDPT_RX] = {
+		.type = UE_BULK,
+		.endpoint = UE_ADDR_ANY,
+		.direction = UE_DIR_IN,
+		.bufsize = (MCLBYTES + 4 + ETHER_CRC_LEN),
+		.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
+		.callback = mos_bulk_read_callback,
+	},
+
+	[MOS_ENDPT_INTR] = {
+		.type = UE_INTERRUPT,
+		.endpoint = UE_ADDR_ANY,
+		.direction = UE_DIR_IN,
+		.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
+		.bufsize = 0,
+		.callback = mos_intr_callback,
+	},
+};
+
+static device_method_t mos_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe, mos_probe),
+	DEVMETHOD(device_attach, mos_attach),
+	DEVMETHOD(device_detach, mos_detach),
+
+	/* bus interface */
+	DEVMETHOD(bus_print_child, bus_generic_print_child),
+	DEVMETHOD(bus_driver_added, bus_generic_driver_added),
+
+	/* MII interface */
+	DEVMETHOD(miibus_readreg, mos_miibus_readreg),
+	DEVMETHOD(miibus_writereg, mos_miibus_writereg),
+	DEVMETHOD(miibus_statchg, mos_miibus_statchg),
+
+	{0, 0}
+};
+
+static driver_t mos_driver = {
+	.name = "mos",
+	.methods = mos_methods,
+	.size = sizeof(struct mos_softc)
+};
+
+static devclass_t mos_devclass;
+
+DRIVER_MODULE(mos, uhub, mos_driver, mos_devclass, NULL, 0);
+DRIVER_MODULE(miibus, mos, miibus_driver, miibus_devclass, 0, 0);
+MODULE_DEPEND(mos, uether, 1, 1, 1);
+MODULE_DEPEND(mos, usb, 1, 1, 1);
+MODULE_DEPEND(mos, ether, 1, 1, 1);
+MODULE_DEPEND(mos, miibus, 1, 1, 1);
+
+static const struct usb_ether_methods mos_ue_methods = {
+	.ue_attach_post = mos_attach_post,
+	.ue_start = mos_start,
+	.ue_init = mos_init,
+	.ue_stop = mos_stop,
+	.ue_tick = mos_tick,
+	.ue_setmulti = mos_setmulti,
+	.ue_setpromisc = mos_setpromisc,
+	.ue_mii_upd = mos_ifmedia_upd,
+	.ue_mii_sts = mos_ifmedia_sts,
+};
+
+
+static int
+mos_reg_read_1(struct mos_softc *sc, int reg)
+{
+	struct usb_device_request req;
+	usb_error_t err;
+	uByte val = 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 = uether_do_request(&sc->sc_ue, &req, &val, 1000);
+
+	if (err) {
+		MOS_DPRINTFN("mos_reg_read_1 error, reg: %d\n", reg);
+		return (-1);
+	}
+	return (val);
+}
+
+static int
+mos_reg_read_2(struct mos_softc *sc, int reg)
+{
+	struct usb_device_request req;
+	usb_error_t err;
+	uWord val;
+
+	USETW(val, 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 = uether_do_request(&sc->sc_ue, &req, &val, 1000);
+
+	if (err) {
+		MOS_DPRINTFN("mos_reg_read_2 error, reg: %d", reg);
+		return (-1);
+	}
+	return (UGETW(val));
+}
+
+static int
+mos_reg_write_1(struct mos_softc *sc, int reg, int aval)
+{
+	struct usb_device_request req;
+	usb_error_t err;
+	uByte val;
+	val = aval;
+
+	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
+	req.bRequest = MOS_UR_WRITEREG;
+	USETW(req.wValue, 0);
+	USETW(req.wIndex, reg);
+	USETW(req.wLength, 1);
+
+	err = uether_do_request(&sc->sc_ue, &req, &val, 1000);
+
+	if (err) {
+		MOS_DPRINTFN("mos_reg_write_1 error, reg: %d", reg);
+		return (-1);
+	}
+	return (0);
+}
+
+static int
+mos_reg_write_2(struct mos_softc *sc, int reg, int aval)
+{
+	struct usb_device_request req;
+	usb_error_t err;
+	uWord val;
+
+	USETW(val, aval);
+
+	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
+	req.bRequest = MOS_UR_WRITEREG;
+	USETW(req.wValue, 0);
+	USETW(req.wIndex, reg);
+	USETW(req.wLength, 2);
+
+	err = uether_do_request(&sc->sc_ue, &req, &val, 1000);
+
+	if (err) {
+		MOS_DPRINTFN("mos_reg_write_2 error, reg: %d", reg);
+		return (-1);
+	}
+	return (0);
+}
+
+static int
+mos_readmac(struct mos_softc *sc, u_char *mac)
+{
+	struct usb_device_request req;
+	usb_error_t err;
+
+	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 = uether_do_request(&sc->sc_ue, &req, mac, 1000);
+
+	if (err) {
+		return (-1);
+	}
+	return (0);
+}
+
+static int
+mos_writemac(struct mos_softc *sc, uint8_t *mac)
+{
+	struct usb_device_request req;
+	usb_error_t err;
+
+	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 = uether_do_request(&sc->sc_ue, &req, mac, 1000);
+
+	if (err) {
+		MOS_DPRINTFN("mos_writemac error");
+		return (-1);
+	}
+	return (0);
+}
+
+static int
+mos_write_mcast(struct mos_softc *sc, u_char *hashtbl)
+{
+	struct usb_device_request req;
+	usb_error_t err;
+
+	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 = uether_do_request(&sc->sc_ue, &req, hashtbl, 1000);
+
+	if (err) {
+		MOS_DPRINTFN("mos_reg_mcast error");
+		return (-1);
+	}
+	return (0);
+}
+
+static int
+mos_miibus_readreg(struct device *dev, int phy, int reg)
+{
+	struct mos_softc *sc = device_get_softc(dev);
+	uWord val;
+	int i, res, locked;
+
+	USETW(val, 0);
+
+	locked = mtx_owned(&sc->sc_mtx);
+	if (!locked)
+		MOS_LOCK(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) {
+		MOS_DPRINTFN("MII read timeout");
+	}
+	res = mos_reg_read_2(sc, MOS_PHY_DATA);
+
+	if (!locked)
+		MOS_UNLOCK(sc);
+	return (res);
+}
+
+static int
+mos_miibus_writereg(device_t dev, int phy, int reg, int val)
+{
+	struct mos_softc *sc = device_get_softc(dev);
+	int i, locked;
+
+	locked = mtx_owned(&sc->sc_mtx);
+	if (!locked)
+		MOS_LOCK(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)
+		MOS_DPRINTFN("MII write timeout");
+
+	if (!locked)
+		MOS_UNLOCK(sc);
+	return 0;
+}
+
+static void
+mos_miibus_statchg(device_t dev)
+{
+	struct mos_softc *sc = device_get_softc(dev);
+	struct mii_data *mii = GET_MII(sc);
+	int val, err, locked;
+
+	locked = mtx_owned(&sc->sc_mtx);
+	if (!locked)
+		MOS_LOCK(sc);
+
+	/* disable RX, TX prior to changing FDX, SPEEDSEL */
+	val = mos_reg_read_1(sc, MOS_CTL);
+	val &= ~(MOS_CTL_TX_ENB | MOS_CTL_RX_ENB);
+	mos_reg_write_1(sc, MOS_CTL, val);
+
+	/* reset register which counts dropped frames */
+	mos_reg_write_1(sc, MOS_FRAME_DROP_CNT, 0);
+
+	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;
+	}
+
+	/* re-enable TX, RX */
+	val |= (MOS_CTL_TX_ENB | MOS_CTL_RX_ENB);
+	err = mos_reg_write_1(sc, MOS_CTL, val);
+
+	if (err)
+		MOS_DPRINTFN("media change failed");
+
+	if (!locked)
+		MOS_UNLOCK(sc);
+}
+
+/*
+ * Set media options.
+ */
+static int
+mos_ifmedia_upd(struct ifnet *ifp)
+{
+	struct mos_softc *sc = ifp->if_softc;
+	struct mii_data *mii = GET_MII(sc);
+	struct mii_softc *miisc;
+
+	MOS_LOCK_ASSERT(sc, MA_OWNED);
+
+	sc->mos_link = 0;
+	if (mii->mii_instance) {
+		LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
+		    mii_phy_reset(miisc);
+	}
+	mii_mediachg(mii);
+	return (0);
+}
+
+/*
+ * Report current media status.
+ */
+static void
+mos_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
+{
+	struct mos_softc *sc = ifp->if_softc;
+	struct mii_data *mii = GET_MII(sc);
+
+	MOS_LOCK(sc);
+	mii_pollstat(mii);
+	MOS_UNLOCK(sc);
+
+	ifmr->ifm_active = mii->mii_media_active;
+	ifmr->ifm_status = mii->mii_media_status;
+}
+
+static void
+mos_setpromisc(struct usb_ether *ue)
+{
+	struct mos_softc *sc = uether_getsc(ue);
+	struct ifnet *ifp = uether_getifp(ue);
+
+	uint8_t rxmode;
+
+	MOS_LOCK_ASSERT(sc, MA_OWNED);
+
+	rxmode = mos_reg_read_1(sc, MOS_CTL);
+
+	/* If we want promiscuous mode, set the allframes bit. */
+	if (ifp->if_flags & IFF_PROMISC) {
+		rxmode |= MOS_CTL_RX_PROMISC;
+	} else {
+		rxmode &= ~MOS_CTL_RX_PROMISC;
+	}
+
+	mos_reg_write_1(sc, MOS_CTL, rxmode);
+}
+
+
+
+static void
+mos_setmulti(struct usb_ether *ue)
+{
+	struct mos_softc *sc = uether_getsc(ue);
+	struct ifnet *ifp = uether_getifp(ue);
+	struct ifmultiaddr *ifma;
+
+	uint32_t h = 0;
+	uint8_t rxmode;
+	uint8_t hashtbl[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+	int allmulti = 0;
+
+	MOS_LOCK_ASSERT(sc, MA_OWNED);
+
+	rxmode = mos_reg_read_1(sc, MOS_CTL);
+
+	if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC)
+		allmulti = 1;
+
+	/* get all new ones */
+	if_maddr_rlock(ifp);
+	TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
+		if (ifma->ifma_addr->sa_family != AF_LINK) {
+			allmulti = 1;
+			continue;
+		};
+		h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
+		    ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
+		hashtbl[h / 8] |= 1 << (h % 8);
+	}
+	if_maddr_runlock(ifp);
+
+	/* now program new ones */
+	if (allmulti == 1) {
+		rxmode |= MOS_CTL_ALLMULTI;
+		mos_reg_write_1(sc, MOS_CTL, rxmode);
+	} else {
+		rxmode &= ~MOS_CTL_ALLMULTI;
+		mos_write_mcast(sc, (void *)&hashtbl);
+		mos_reg_write_1(sc, MOS_CTL, rxmode);
+	}
+}
+
+static void
+mos_reset(struct mos_softc *sc)
+{
+	uint8_t ctl;
+
+	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);
+
+	/* Reset frame drop counter register to zero */
+	mos_reg_write_1(sc, MOS_FRAME_DROP_CNT, 0);
+
+	/* Wait a little while for the chip to get its brains in order. */
+	usb_pause_mtx(&sc->sc_mtx, hz / 128);
+	return;
+}
+
+static void
+mos_chip_init(struct mos_softc *sc)
+{
+	int i;
+
+	/*
+	 * Rev.C devices have a pause threshold register which needs to be set
+	 * at startup.
+	 */
+	if (mos_reg_read_1(sc, MOS_PAUSE_TRHD) != -1) {
+		for (i = 0; i < MOS_PAUSE_REWRITES; i++)
+			mos_reg_write_1(sc, MOS_PAUSE_TRHD, 0);
+	}
+	sc->mos_phyaddrs[0] = 1;
+	sc->mos_phyaddrs[1] = 0xFF;
+}
+
+/*
+ * Probe for a MCS7x30 chip.
+ */
+static int
+mos_probe(device_t dev)
+{
+	struct usb_attach_arg *uaa = device_get_ivars(dev);
+        int retval;
+
+	if (uaa->usb_mode != USB_MODE_HOST)
+		return (ENXIO);
+	if (uaa->info.bConfigIndex != MOS_CONFIG_IDX)
+		return (ENXIO);
+	if (uaa->info.bIfaceIndex != MOS_IFACE_IDX)
+		return (ENXIO);
+
+	retval = usbd_lookup_id_by_uaa(mos_devs, sizeof(mos_devs), uaa);
+	return (retval);
+}
+
+/*
+ * Attach the interface. Allocate softc structures, do ifmedia
+ * setup and ethernet/BPF attach.
+ */
+static int
+mos_attach(device_t dev)
+{
+	struct usb_attach_arg *uaa = device_get_ivars(dev);
+	struct mos_softc *sc = device_get_softc(dev);
+	struct usb_ether *ue = &sc->sc_ue;
+	uint8_t iface_index;
+	int error;
+
+	sc->mos_flags = USB_GET_DRIVER_INFO(uaa);
+
+	device_set_usb_desc(dev);
+	mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
+
+	iface_index = MOS_IFACE_IDX;
+	error = usbd_transfer_setup(uaa->device, &iface_index,
+	    sc->sc_xfer, mos_config, MOS_ENDPT_MAX,
+	    sc, &sc->sc_mtx);
+
+	if (error) {
+		device_printf(dev, "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 = &mos_ue_methods;
+
+
+	if (sc->mos_flags & MCS7730) {
+		MOS_DPRINTFN("model: MCS7730");
+	} else if (sc->mos_flags & MCS7830) {
+		MOS_DPRINTFN("model: MCS7830");
+	}
+	error = uether_ifattach(ue);
+	if (error) {
+		device_printf(dev, "could not attach interface\n");
+		goto detach;
+	}
+	return (0);
+
+
+detach:
+	mos_detach(dev);
+	return (ENXIO);
+}
+
+
+static void
+mos_attach_post(struct usb_ether *ue)
+{
+	struct mos_softc *sc = uether_getsc(ue);
+        int err;
+
+	/* Read MAC address, inform the world. */
+	err = mos_readmac(sc, ue->ue_eaddr);
+
+	if (err)
+	  MOS_DPRINTFN("couldn't get MAC address");
+
+	MOS_DPRINTFN("address: %s", ether_sprintf(ue->ue_eaddr));
+
+	mos_chip_init(sc);
+}
+
+static int
+mos_detach(device_t dev)
+{
+	struct mos_softc *sc = device_get_softc(dev);
+	struct usb_ether *ue = &sc->sc_ue;
+
+	usbd_transfer_unsetup(sc->sc_xfer, MOS_ENDPT_MAX);
+	uether_ifdetach(ue);
+	mtx_destroy(&sc->sc_mtx);
+
+	return (0);
+}
+
+
+
+
+/*
+ * A frame has been uploaded: pass the resulting mbuf chain up to
+ * the higher level protocols.
+ */
+static void
+mos_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
+{
+	struct mos_softc *sc = usbd_xfer_softc(xfer);
+	struct usb_ether *ue = &sc->sc_ue;
+	struct ifnet *ifp = uether_getifp(ue);
+
+	uint8_t rxstat = 0;
+	uint32_t actlen;
+	uint16_t pktlen = 0;
+	struct usb_page_cache *pc;
+
+	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
+	pc = usbd_xfer_get_frame(xfer, 0);
+
+	switch (USB_GET_STATE(xfer)) {
+	case USB_ST_TRANSFERRED:
+		MOS_DPRINTFN("actlen : %d", actlen);
+		if (actlen <= 1) {
+			ifp->if_ierrors++;
+			goto tr_setup;
+		}
+		/* evaluate status byte at the end */
+		usbd_copy_out(pc, actlen - sizeof(rxstat), &rxstat,
+		    sizeof(rxstat));
+
+		if (rxstat != MOS_RXSTS_VALID) {
+			MOS_DPRINTFN("erroneous frame received");
+			if (rxstat & MOS_RXSTS_SHORT_FRAME)
+				MOS_DPRINTFN("frame size less than 64 bytes");
+			if (rxstat & MOS_RXSTS_LARGE_FRAME)
+				MOS_DPRINTFN("frame size larger than 1532 bytes");
+			if (rxstat & MOS_RXSTS_CRC_ERROR)
+				MOS_DPRINTFN("CRC error");
+			if (rxstat & MOS_RXSTS_ALIGN_ERROR)
+				MOS_DPRINTFN("alignment error");
+			ifp->if_ierrors++;
+			goto tr_setup;
+		}
+		/* Remember the last byte was used for the status fields */
+		pktlen = actlen - 1;
+		if (pktlen < sizeof(struct ether_header)) {
+			MOS_DPRINTFN("error: pktlen %i is smaller than ether_header %i", pktlen, sizeof(struct ether_header));
+			ifp->if_ierrors++;
+			goto tr_setup;
+		}
+		uether_rxbuf(ue, pc, 0, actlen);
+		/* 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:
+		MOS_DPRINTFN("bulk read error, %s", usbd_errstr(error));
+		if (error != USB_ERR_CANCELLED) {
+			usbd_xfer_set_stall(xfer);
+			goto tr_setup;
+		}
+		MOS_DPRINTFN("start rx %i", usbd_xfer_max_len(xfer));
+		return;
+	}
+}
+
+/*
+ * A frame was downloaded to the chip. It's safe for us to clean up
+ * the list buffers.
+ */
+static void
+mos_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
+{
+	struct mos_softc *sc = usbd_xfer_softc(xfer);
+	struct ifnet *ifp = uether_getifp(&sc->sc_ue);
+	struct usb_page_cache *pc;
+	struct mbuf *m;
+
+
+
+	switch (USB_GET_STATE(xfer)) {
+	case USB_ST_TRANSFERRED:
+		MOS_DPRINTFN("transfer of complete");
+		ifp->if_opackets++;
+		/* FALLTHROUGH */
+	case USB_ST_SETUP:
+tr_setup:
+		/*
+		 * XXX: don't send anything if there is no link?
+		 */
+		IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
+		if (m == NULL)
+			return;
+
+		pc = usbd_xfer_get_frame(xfer, 0);
+		usbd_m_copy_in(pc, 0, m, 0, m->m_pkthdr.len);
+
+		usbd_xfer_set_frame_len(xfer, 0, m->m_pkthdr.len);
+
+
+		/*
+		 * if there's a BPF listener, bounce a copy
+		 * of this frame to him:
+		 */
+		BPF_MTAP(ifp, m);
+
+		m_freem(m);
+
+		usbd_transfer_submit(xfer);
+
+		ifp->if_opackets++;
+		return;
+	default:
+		MOS_DPRINTFN("usb error on tx: %s\n", usbd_errstr(error));
+		ifp->if_oerrors++;
+		if (error != USB_ERR_CANCELLED) {
+			usbd_xfer_set_stall(xfer);
+			goto tr_setup;
+		}
+		return;
+	}
+}
+
+static void
+mos_tick(struct usb_ether *ue)
+{
+	struct mos_softc *sc = uether_getsc(ue);
+	struct mii_data *mii = GET_MII(sc);
+
+	MOS_LOCK_ASSERT(sc, MA_OWNED);
+
+	mii_tick(mii);
+	if (!sc->mos_link && mii->mii_media_status & IFM_ACTIVE &&
+	    IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
+		MOS_DPRINTFN("got link");
+		sc->mos_link++;
+		mos_start(ue);
+	}
+}
+
+
+static void
+mos_start(struct usb_ether *ue)
+{
+	struct mos_softc *sc = uether_getsc(ue);
+
+	/*
+	 * start the USB transfers, if not already started:
+	 */
+	usbd_transfer_start(sc->sc_xfer[MOS_ENDPT_TX]);
+	usbd_transfer_start(sc->sc_xfer[MOS_ENDPT_RX]);
+	usbd_transfer_start(sc->sc_xfer[MOS_ENDPT_INTR]);
+}
+
+static void
+mos_init(struct usb_ether *ue)
+{
+	struct mos_softc *sc = uether_getsc(ue);
+	struct ifnet *ifp = uether_getifp(ue);
+	uint8_t rxmode;
+
+	MOS_LOCK_ASSERT(sc, MA_OWNED);
+
+	/* Cancel pending I/O and free all RX/TX buffers. */
+	mos_reset(sc);
+
+	/* Write MAC address */
+	mos_writemac(sc, IF_LLADDR(ifp));
+
+	/* Read and set transmitter IPG values */
+	sc->mos_ipgs[0] = mos_reg_read_1(sc, MOS_IPG0);
+	sc->mos_ipgs[1] = mos_reg_read_1(sc, MOS_IPG1);
+	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);
+
+	mos_setpromisc(ue);
+
+	/* XXX: broadcast mode? */
+	mos_reg_write_1(sc, MOS_CTL, rxmode);
+
+	/* Load the multicast filter. */
+	mos_setmulti(ue);
+
+	ifp->if_drv_flags |= IFF_DRV_RUNNING;
+	mos_start(ue);
+}
+
+
+static void
+mos_intr_callback(struct usb_xfer *xfer, usb_error_t error)
+{
+	struct mos_softc *sc = usbd_xfer_softc(xfer);
+	struct ifnet *ifp = uether_getifp(&sc->sc_ue);
+	struct usb_page_cache *pc;
+	uint32_t pkt;
+	int actlen;
+
+	ifp->if_oerrors++;
+
+	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
+	MOS_DPRINTFN("actlen %i", actlen);
+
+	switch (USB_GET_STATE(xfer)) {
+	case USB_ST_TRANSFERRED:
+
+		pc = usbd_xfer_get_frame(xfer, 0);
+		usbd_copy_out(pc, 0, &pkt, sizeof(pkt));
+		/* FALLTHROUGH */
+	case USB_ST_SETUP:
+tr_setup:
+		return;
+	default:
+		if (error != USB_ERR_CANCELLED) {
+			usbd_xfer_set_stall(xfer);
+			goto tr_setup;
+		}
+		return;
+	}
+}
+
+
+/*
+ * Stop the adapter and free any mbufs allocated to the
+ * RX and TX lists.
+ */
+static void
+mos_stop(struct usb_ether *ue)
+{
+	struct mos_softc *sc = uether_getsc(ue);
+	struct ifnet *ifp = uether_getifp(ue);
+
+	mos_reset(sc);
+
+	MOS_LOCK_ASSERT(sc, MA_OWNED);
+	ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
+
+	/* stop all the transfers, if not already stopped */
+	usbd_transfer_stop(sc->sc_xfer[MOS_ENDPT_TX]);
+	usbd_transfer_stop(sc->sc_xfer[MOS_ENDPT_RX]);
+	usbd_transfer_stop(sc->sc_xfer[MOS_ENDPT_INTR]);
+
+	sc->mos_link = 0;
+}
diff --git a/sys/dev/usb/net/if_mosreg.h b/sys/dev/usb/net/if_mosreg.h
new file mode 100644
index 0000000..bab66f6
--- /dev/null
+++ b/sys/dev/usb/net/if_mosreg.h
@@ -0,0 +1,175 @@
+/* $FreeBSD$ */
+/*-
+ * Copyright (c) 2010, 2011 Rick van der Zwet <info@rickvanderzwet.nl>
+ *
+ * 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) 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_FRAME_DROP_CNT	0x15
+#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_RXSTS_SHORT_FRAME	0x01
+#define	MOS_RXSTS_LENGTH_ERROR	0x02
+#define	MOS_RXSTS_ALIGN_ERROR	0x04
+#define	MOS_RXSTS_CRC_ERROR	0x08
+#define	MOS_RXSTS_LARGE_FRAME	0x10
+#define	MOS_RXSTS_VALID		0x20
+/*
+ * The EtherType field of an Ethernet frame can contain values other than
+ * the frame length, hence length errors are ignored.
+ */
+#define	MOS_RXSTS_MASK		0x3d
+
+#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
+
+/* Maximum size of a fast ethernet frame plus one byte for the status */
+#define	MOS_BUFSZ	 	(ETHER_MAX_LEN+1)
+
+/*
+ * 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_IDX		0
+#define	MOS_IFACE_IDX		0
+
+#define	MCS7730	0x0001
+#define	MCS7830	0x0002
+
+#define	MOS_INC(x, y)           (x) = (x + 1) % y
+
+struct mos_softc {
+	struct usb_ether sc_ue;
+	struct ifnet ifp;
+
+	struct mtx sc_mtx;
+	struct usb_xfer *sc_xfer[MOS_ENDPT_MAX];
+
+	uint16_t mos_flags;
+
+	int mos_link;
+	unsigned char mos_ipgs[2];
+	unsigned char mos_phyaddrs[2];
+};
+
+#define	GET_MII(sc)		uether_getmii(&(sc)->sc_ue)
+#define	MOS_LOCK(_sc)		mtx_lock(&(_sc)->sc_mtx)
+#define	MOS_UNLOCK(_sc)		mtx_unlock(&(_sc)->sc_mtx)
+#define	MOS_LOCK_ASSERT(_sc, t)	mtx_assert(&(_sc)->sc_mtx, t)