Add gentbi, a generic TBI(teb-bit interface) PHY driver ported

from NetBSD.

1 files changed, 314 insertions, 0 deletions

diff --git a/sys/dev/mii/gentbi.c b/sys/dev/mii/gentbi.c
new file mode 100644
index 0000000..06ce458
--- /dev/null
+++ b/sys/dev/mii/gentbi.c
@@ -0,0 +1,314 @@
+/*	$NetBSD: gentbi.c,v 1.15 2006/03/29 07:05:24 thorpej Exp $	*/
+
+/*-
+ * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+ * NASA Ames Research Center.
+ *
+ * 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 the NetBSD
+ *	Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+/*
+ * Copyright (c) 1997 Manuel Bouyer.  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 Manuel Bouyer.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * 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.
+ */
+
+/*
+ * Driver for generic ten-bit (1000BASE-SX) interfaces, built in to
+ * many Gigabit Ethernet chips.
+ *
+ * All we have to do here is correctly report speed and duplex.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * Driver for generic unknown ten-bit interfaces(1000BASE-{LX,SX}
+ * fiber interfaces).
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/socket.h>
+#include <sys/errno.h>
+#include <sys/bus.h>
+
+#include <net/if.h>
+#include <net/if_media.h>
+
+#include <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+#include "miidevs.h"
+
+#include "miibus_if.h"
+
+static int	gentbi_probe(device_t);
+static int	gentbi_attach(device_t);
+
+static device_method_t gentbi_methods[] = {
+	/* device interface */
+	DEVMETHOD(device_probe,		gentbi_probe),
+	DEVMETHOD(device_attach,	gentbi_attach),
+	DEVMETHOD(device_detach,	mii_phy_detach),
+	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
+	{0, 0}
+};
+
+static devclass_t gentbi_devclass;
+
+static driver_t gentbi_driver = {
+	"gentbi",
+	gentbi_methods,
+	sizeof(struct mii_softc)
+};
+
+DRIVER_MODULE(gentbi, miibus, gentbi_driver, gentbi_devclass, 0, 0);
+
+static int	gentbi_service(struct mii_softc *, struct mii_data *, int);
+static void	gentbi_status(struct mii_softc *);
+
+static int
+gentbi_probe(device_t dev)
+{
+	device_t parent;
+	struct mii_attach_args *ma;
+	int bmsr, extsr;
+
+	parent = device_get_parent(dev);
+	ma = device_get_ivars(dev);
+
+	/*
+	 * We match as a generic TBI if:
+	 *
+	 *	- There is no media in the BMSR.
+	 *	- EXTSR has only 1000X.
+	 */
+	bmsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_BMSR);
+	if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0)
+		return (ENXIO);
+
+	extsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_EXTSR);
+	if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX))
+		return (ENXIO);
+
+	if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) {
+		/*
+		 * We think this is a generic TBI.  Return a match
+		 * priority higher than ukphy, but lower than what
+		 * specific drivers will return.
+		 */
+		device_set_desc(dev, "Generic ten-bit interface");
+		return (BUS_PROBE_LOW_PRIORITY);
+	}
+
+	return (ENXIO);
+}
+
+static int
+gentbi_attach(device_t dev)
+{
+	struct mii_softc *sc;
+	struct mii_attach_args *ma;
+	struct mii_data *mii;
+
+	sc = device_get_softc(dev);
+	ma = device_get_ivars(dev);
+	sc->mii_dev = device_get_parent(dev);
+	mii = device_get_softc(sc->mii_dev);
+	LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
+
+	if (bootverbose)
+		device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
+		    MII_OUI(ma->mii_id1, ma->mii_id2),
+		    MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2));
+
+	sc->mii_inst = mii->mii_instance;
+	sc->mii_phy = ma->mii_phyno;
+	sc->mii_service = gentbi_service;
+	sc->mii_pdata = mii;
+	sc->mii_flags |= MIIF_NOISOLATE;
+
+	mii->mii_instance++;
+
+	mii_phy_reset(sc);
+
+	/*
+	 * Mask out all media in the BMSR.  We only are really interested
+	 * in "auto".
+	 */
+	sc->mii_capabilities =
+	    PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK;
+	if (sc->mii_capabilities & BMSR_EXTSTAT)
+		sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
+
+	device_printf(dev, " ");
+	if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
+	    (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
+		printf("no media present");
+	else
+		mii_phy_add_media(sc);
+	printf("\n");
+
+	return (0);
+}
+
+static int
+gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
+{
+	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
+	int reg;
+
+	switch (cmd) {
+	case MII_POLLSTAT:
+		/*
+		 * If we're not polling our PHY instance, just return.
+		 */
+		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
+			return (0);
+		break;
+
+	case MII_MEDIACHG:
+		/*
+		 * If the media indicates a different PHY instance,
+		 * isolate ourselves.
+		 */
+		if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
+			reg = PHY_READ(sc, MII_BMCR);
+			PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
+			return (0);
+		}
+
+		/*
+		 * If the interface is not up, don't do anything.
+		 */
+		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
+			break;
+
+		mii_phy_setmedia(sc);
+		break;
+
+	case MII_TICK:
+		/*
+		 * If we're not currently selected, just return.
+		 */
+		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
+			return (0);
+
+		if (mii_phy_tick(sc) == EJUSTRETURN)
+			return (0);
+		break;
+	}
+
+	/* Update the media status. */
+	gentbi_status(sc);
+
+	/* Callback if something changed. */
+	mii_phy_update(sc, cmd);
+	return (0);
+}
+
+static void
+gentbi_status(struct mii_softc *sc)
+{
+	struct mii_data *mii = sc->mii_pdata;
+	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
+	int bmsr, bmcr, anlpar;
+
+	mii->mii_media_status = IFM_AVALID;
+	mii->mii_media_active = IFM_ETHER;
+
+	bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
+
+	if (bmsr & BMSR_LINK)
+		mii->mii_media_status |= IFM_ACTIVE;
+
+	bmcr = PHY_READ(sc, MII_BMCR);
+	if (bmcr & BMCR_ISO) {
+		mii->mii_media_active |= IFM_NONE;
+		mii->mii_media_status = 0;
+		return;
+	}
+
+	if (bmcr & BMCR_LOOP)
+		mii->mii_media_active |= IFM_LOOP;
+
+	if (bmcr & BMCR_AUTOEN) {
+		/*
+		 * The media status bits are only valid of autonegotiation
+		 * has completed (or it's disabled).
+		 */
+		if ((bmsr & BMSR_ACOMP) == 0) {
+			/* Erg, still trying, I guess... */
+			mii->mii_media_active |= IFM_NONE;
+			return;
+		}
+
+		/*
+		 * The media is always 1000baseSX.  Check the ANLPAR to
+		 * see if we're doing full-duplex.
+		 */
+		mii->mii_media_active |= IFM_1000_SX;
+
+		anlpar = PHY_READ(sc, MII_ANLPAR);
+		if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 &&
+		    (anlpar & ANLPAR_X_FD) != 0)
+			mii->mii_media_active |= IFM_FDX;
+	} else
+		mii->mii_media_active = ife->ifm_media;
+}