253 lines
7.2 KiB
C
253 lines
7.2 KiB
C
/* $NetBSD: tqphy.c,v 1.45 2020/03/15 23:04:50 thorpej Exp $ */
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/*
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* Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1997 Manuel Bouyer. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* TDK TSC78Q2120 PHY driver
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*
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* Documentation available at http://www.tsc.tdk.com/lan/78Q2120.pdf .
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: tqphy.c,v 1.45 2020/03/15 23:04:50 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include <dev/mii/miidevs.h>
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#include <dev/mii/tqphyreg.h>
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static int tqphymatch(device_t, cfdata_t, void *);
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static void tqphyattach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(tqphy, sizeof(struct mii_softc),
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tqphymatch, tqphyattach, mii_phy_detach, mii_phy_activate);
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static int tqphy_service(struct mii_softc *, struct mii_data *, int);
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static void tqphy_status(struct mii_softc *);
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static const struct mii_phy_funcs tqphy_funcs = {
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tqphy_service, tqphy_status, mii_phy_reset,
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};
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static const struct mii_phydesc tqphys[] = {
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MII_PHY_DESC(xxTSC, 78Q2120),
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#if 0
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MII_PHY_DESC(xxTSC, 78Q2121),
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#endif
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MII_PHY_END,
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};
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static int
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tqphymatch(device_t parent, cfdata_t match, void *aux)
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{
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struct mii_attach_args *ma = aux;
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if (mii_phy_match(ma, tqphys) != NULL) {
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/* The DIAG register is unreliable on early revisions. */
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if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxTSC_78Q2120 &&
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MII_REV(ma->mii_id2) <= 3)
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return 0;
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return 10;
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}
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return 0;
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}
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static void
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tqphyattach(device_t parent, device_t self, void *aux)
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{
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struct mii_softc *sc = device_private(self);
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struct mii_attach_args *ma = aux;
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struct mii_data *mii = ma->mii_data;
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const struct mii_phydesc *mpd;
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mpd = mii_phy_match(ma, tqphys);
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aprint_naive(": Media interface\n");
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aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
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sc->mii_dev = self;
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sc->mii_inst = mii->mii_instance;
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sc->mii_phy = ma->mii_phyno;
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sc->mii_funcs = &tqphy_funcs;
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sc->mii_pdata = mii;
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sc->mii_flags = ma->mii_flags;
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/* Apparently, we can't do loopback on this PHY. */
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sc->mii_flags |= MIIF_NOLOOP;
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mii_lock(mii);
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PHY_RESET(sc);
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PHY_READ(sc, MII_BMSR, &sc->mii_capabilities);
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sc->mii_capabilities &= ma->mii_capmask;
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mii_unlock(mii);
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mii_phy_add_media(sc);
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}
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static int
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tqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
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{
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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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uint16_t reg;
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KASSERT(mii_locked(mii));
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switch (cmd) {
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case MII_POLLSTAT:
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/* If we're not polling our PHY instance, just return. */
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if (IFM_INST(ife->ifm_media) != sc->mii_inst)
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return 0;
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break;
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case MII_MEDIACHG:
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/*
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* If the media indicates a different PHY instance,
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* isolate ourselves.
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*/
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if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
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PHY_READ(sc, MII_BMCR, ®);
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PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
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return 0;
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}
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/* If the interface is not up, don't do anything. */
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if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
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break;
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mii_phy_setmedia(sc);
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break;
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case MII_TICK:
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/* If we're not currently selected, just return. */
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if (IFM_INST(ife->ifm_media) != sc->mii_inst)
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return 0;
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if (mii_phy_tick(sc) == EJUSTRETURN)
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return 0;
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break;
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case MII_DOWN:
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mii_phy_down(sc);
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return 0;
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}
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/* Update the media status. */
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mii_phy_status(sc);
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/* Callback if something changed. */
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mii_phy_update(sc, cmd);
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return 0;
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}
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static void
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tqphy_status(struct mii_softc *sc)
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{
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struct mii_data *mii = sc->mii_pdata;
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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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uint16_t bmsr, bmcr, diag;
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KASSERT(mii_locked(mii));
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mii->mii_media_status = IFM_AVALID;
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mii->mii_media_active = IFM_ETHER;
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PHY_READ(sc, MII_BMSR, &bmsr);
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PHY_READ(sc, MII_BMSR, &bmsr);
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if (bmsr & BMSR_LINK)
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mii->mii_media_status |= IFM_ACTIVE;
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PHY_READ(sc, MII_BMCR, &bmcr);
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if (bmcr & BMCR_ISO) {
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mii->mii_media_active |= IFM_NONE;
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mii->mii_media_status = 0;
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return;
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}
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if (bmcr & BMCR_LOOP)
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mii->mii_media_active |= IFM_LOOP;
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if (bmcr & BMCR_AUTOEN) {
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if ((bmsr & BMSR_ACOMP) == 0) {
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/* Erg, still trying, I guess... */
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mii->mii_media_active |= IFM_NONE;
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return;
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}
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PHY_READ(sc, MII_TQPHY_DIAG, &diag);
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if (diag & DIAG_RATE)
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mii->mii_media_active |= IFM_100_TX;
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else
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mii->mii_media_active |= IFM_10_T;
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if (diag & DIAG_DPLX)
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mii->mii_media_active |= IFM_FDX;
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else
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mii->mii_media_active |= IFM_HDX;
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} else
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mii->mii_media_active = ife->ifm_media;
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}
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