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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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