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[src/trunk]: src/sys/dev/mii Add driver for the TDK Semiconductor 78Q2120 PHY.
details: https://anonhg.NetBSD.org/src/rev/1c111bfd2c57
branches: trunk
changeset: 476065:1c111bfd2c57
user: soren <soren%NetBSD.org@localhost>
date: Sun Sep 05 01:26:02 1999 +0000
description:
Add driver for the TDK Semiconductor 78Q2120 PHY.
diffstat:
sys/dev/mii/tqphy.c | 301 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 301 insertions(+), 0 deletions(-)
diffs (truncated from 305 to 300 lines):
diff -r 85e1a97815b6 -r 1c111bfd2c57 sys/dev/mii/tqphy.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/mii/tqphy.c Sun Sep 05 01:26:02 1999 +0000
@@ -0,0 +1,301 @@
+/* $NetBSD: tqphy.c,v 1.1 1999/09/05 01:26:02 soren Exp $ */
+
+/*
+ * Copyright (c) 1998 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.
+ */
+
+/*
+ * TDK TSC78Q2120 PHY driver
+ *
+ * Documentation available at http://www.tsc.tdk.com/lan/78Q2120.pdf .
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+#include <sys/socket.h>
+
+#include <net/if.h>
+#include <net/if_media.h>
+
+#include <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+#include <dev/mii/miidevs.h>
+
+#include <dev/mii/tqphyreg.h>
+
+int tqphymatch __P((struct device *, struct cfdata *, void *));
+void tqphyattach __P((struct device *, struct device *, void *));
+
+struct cfattach tqphy_ca = {
+ sizeof(struct mii_softc), tqphymatch, tqphyattach
+};
+
+int tqphy_service __P((struct mii_softc *, struct mii_data *, int));
+void tqphy_status __P((struct mii_softc *));
+
+int
+tqphymatch(parent, match, aux)
+ struct device *parent;
+ struct cfdata *match;
+ void *aux;
+{
+ struct mii_attach_args *ma = aux;
+
+ if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_TSC &&
+ MII_MODEL(ma->mii_id2) == MII_MODEL_TSC_78Q2120)
+ return (10);
+
+ return (0);
+}
+
+void
+tqphyattach(parent, self, aux)
+ struct device *parent, *self;
+ void *aux;
+{
+ struct mii_softc *sc = (struct mii_softc *)self;
+ struct mii_attach_args *ma = aux;
+ struct mii_data *mii = ma->mii_data;
+
+ printf(": %s, rev. %d\n", MII_STR_TSC_78Q2120,
+ MII_REV(ma->mii_id2));
+
+ sc->mii_inst = mii->mii_instance;
+ sc->mii_phy = ma->mii_phyno;
+ sc->mii_service = tqphy_service;
+ sc->mii_pdata = mii;
+
+#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
+
+#if 0
+ ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_LOOP, sc->mii_inst),
+ BMCR_LOOP|BMCR_S100);
+#endif
+
+ mii_phy_reset(sc);
+
+ sc->mii_capabilities =
+ PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
+ printf("%s: ", sc->mii_dev.dv_xname);
+ 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
+}
+
+int
+tqphy_service(sc, mii, cmd)
+ 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;
+
+ 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, 1);
+ break;
+ 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:
+ /*
+ * If we're not currently selected, just return.
+ */
+ if (IFM_INST(ife->ifm_media) != sc->mii_inst)
+ return (0);
+
+ /*
+ * 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);
+
+ /*
+ * Check to see if we have link. If we do, we don't
+ * need to restart the autonegotiation process. Read
+ * the BMSR twice in case it's latched.
+ */
+ reg = PHY_READ(sc, MII_BMSR) |
+ PHY_READ(sc, MII_BMSR);
+ if (reg & BMSR_LINK)
+ return (0);
+
+ /*
+ * Only retry autonegotiation every 5 seconds.
+ */
+ if (++sc->mii_ticks != 5)
+ return (0);
+
+ sc->mii_ticks = 0;
+ mii_phy_reset(sc);
+ if (mii_phy_auto(sc, 0) == EJUSTRETURN)
+ return (0);
+ break;
+ }
+
+ /* Update the media status. */
+ tqphy_status(sc);
+
+ /* Callback if something changed. */
+ if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
+ (*mii->mii_statchg)(sc->mii_dev.dv_parent);
+ sc->mii_active = mii->mii_media_active;
+ }
+ return (0);
+}
+
+void
+tqphy_status(sc)
+ struct mii_softc *sc;
+{
+ struct mii_data *mii = sc->mii_pdata;
+ int bmsr, bmcr, diag;
+
+ 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) {
+ if ((bmsr & BMSR_ACOMP) == 0) {
+ /* Erg, still trying, I guess... */
+ mii->mii_media_active |= IFM_NONE;
+ return;
+ }
+ diag = PHY_READ(sc, MII_TQPHY_DIAG);
+ if (diag & DIAG_RATE)
+ mii->mii_media_active |= IFM_100_TX;
+ else
+ mii->mii_media_active |= IFM_10_T;
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