Add a driver for the internal PHY in the RealTek 8139.

1 files changed, 284 insertions, 0 deletions

diff --git a/sys/dev/mii/rlphy.c b/sys/dev/mii/rlphy.c
new file mode 100644
index 0000000..423159e
--- /dev/null
+++ b/sys/dev/mii/rlphy.c
@@ -0,0 +1,284 @@
+/*
+ * Copyright (c) 1997, 1998, 1999
+ *	Bill Paul <wpaul@ctr.columbia.edu>.  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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * driver for RealTek 8139 internal PHYs
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/socket.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 "miibus_if.h"
+
+#if !defined(lint)
+static const char rcsid[] =
+   "$FreeBSD$";
+#endif
+
+static int rlphy_probe		__P((device_t));
+static int rlphy_attach		__P((device_t));
+static int rlphy_detach		__P((device_t));
+
+static device_method_t rlphy_methods[] = {
+	/* device interface */
+	DEVMETHOD(device_probe,		rlphy_probe),
+	DEVMETHOD(device_attach,	rlphy_attach),
+	DEVMETHOD(device_detach,	rlphy_detach),
+	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
+	{ 0, 0 }
+};
+
+static devclass_t rlphy_devclass;
+
+static driver_t rlphy_driver = {
+	"rlphy",
+	rlphy_methods,
+	sizeof(struct mii_softc)
+};
+
+DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0);
+
+int	rlphy_service __P((struct mii_softc *, struct mii_data *, int));
+void	rlphy_reset __P((struct mii_softc *));
+
+static int rlphy_probe(dev)
+	device_t		dev;
+{
+	struct mii_attach_args *ma;
+	device_t		parent;
+
+	ma = device_get_ivars(dev);
+	parent = device_get_parent(device_get_parent(dev));
+
+	/*
+	 * RealTek PHY doesn't have vendor/device ID registers:
+	 * the rl driver fakes up a return value of all zeros.
+	 */
+	if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
+	    MII_MODEL(ma->mii_id2) != 0)
+		return (ENXIO);
+
+	/*
+	 * Make sure the parent is an `rl'.
+	 */
+	if (strcmp(device_get_name(parent), "rl") != 0)
+		return (ENXIO);
+
+	device_set_desc(dev, "RealTek internal media interface");
+
+	return (0);
+}
+
+static int rlphy_attach(dev)
+	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);
+
+	sc->mii_inst = mii->mii_instance;
+	sc->mii_phy = ma->mii_phyno;
+	sc->mii_service = rlphy_service;
+	sc->mii_pdata = mii;
+
+	/*
+	 * The RealTek PHY can never be isolated, so never allow non-zero
+	 * instances!
+	 */
+	if (mii->mii_instance != 0) {
+		device_printf(dev, "ignoring this PHY, non-zero instance\n");
+		return(ENXIO);
+	}
+
+	mii->mii_instance++;
+
+	sc->mii_flags |= MIIF_NOISOLATE;
+
+#define	ADD(m, c)	ifmedia_add(&mii->mii_media, (m), (c), NULL)
+
+#if 0 /* See above. */
+	ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
+	    BMCR_ISO);
+#endif
+
+	ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
+	    BMCR_LOOP|BMCR_S100);
+
+	rlphy_reset(sc);
+
+	sc->mii_capabilities =
+	    PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
+	device_printf(dev, " ");
+	if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
+		printf("no media present");
+	else
+		mii_add_media(mii, sc->mii_capabilities,
+		    sc->mii_inst);
+	printf("\n");
+#undef ADD
+	MIIBUS_MEDIAINIT(sc->mii_dev);
+	return(0);
+}
+
+static int rlphy_detach(dev)
+	device_t		dev;
+{
+	struct mii_softc	*sc;
+	struct mii_data		*mii;
+
+	sc = device_get_softc(dev);
+	mii = device_get_softc(device_get_softc(dev));
+	sc->mii_dev = NULL;
+	LIST_REMOVE(sc, mii_list);
+
+	return(0);
+}
+
+int
+rlphy_service(sc, mii, cmd)
+	struct mii_softc *sc;
+	struct mii_data *mii;
+	int cmd;
+{
+	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
+
+	/*
+	 * We can't isolate the RealTek PHY, so it has to be the only one!
+	 */
+	if (IFM_INST(ife->ifm_media) != sc->mii_inst)
+		panic("rlphy_service: can't isolate RealTek PHY");
+
+	switch (cmd) {
+	case MII_POLLSTAT:
+		break;
+
+	case MII_MEDIACHG:
+		/*
+		 * If the interface is not up, don't do anything.
+		 */
+		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
+			break;
+
+		switch (IFM_SUBTYPE(ife->ifm_media)) {
+		case IFM_AUTO:
+			/*
+			 * If we're already in auto mode, just return.
+			 */
+			if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
+				return (0);
+			(void) mii_phy_auto(sc, 0);
+			break;
+		case IFM_100_T4:
+			/*
+			 * XXX Not supported as a manual setting right now.
+			 */
+			return (EINVAL);
+		default:
+			/*
+			 * BMCR data is stored in the ifmedia entry.
+			 */
+			PHY_WRITE(sc, MII_ANAR,
+			    mii_anar(ife->ifm_media));
+			PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
+		}
+		break;
+
+	case MII_TICK:
+		/*
+		 * Only used for autonegotiation.
+		 */
+		if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
+			return (0);
+
+		/*
+		 * Is the interface even up?
+		 */
+		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
+			return (0);
+
+		/*
+		 * Only retry autonegotiation every 5 seconds.
+		 */
+		if (++sc->mii_ticks != 5)
+			return (0);
+
+		sc->mii_ticks = 0;
+
+		/*
+		 * The RealTek PHY's autonegotiation doesn't need to be
+		 * kicked; it continues in the background.
+		 */
+		break;
+	}
+
+	/* Update the media status. */
+	ukphy_status(sc);
+
+	/* Callback if something changed. */
+	if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
+		MIIBUS_STATCHG(sc->mii_dev);
+		sc->mii_active = mii->mii_media_active;
+	}
+	return (0);
+}
+
+void
+rlphy_reset(sc)
+	struct mii_softc *sc;
+{
+
+	mii_phy_reset(sc);
+
+	/*
+	 * XXX RealTek PHY doesn't set the BMCR properly after
+	 * XXX reset, which breaks autonegotiation.
+	 */
+	PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX);
+}