d47d37af9b
DP83847 PHYs. The main reason for using a specific driver for these PHYs are reset quirks similar to the nsphy(4) driven DP83840A. PR: 112654 Obtained from: NetBSD MFC after: 2 weeks Thanks to: mlaier for testing w/ DP83815
342 lines
10 KiB
C
342 lines
10 KiB
C
/* $NetBSD: nsphyter.c,v 1.28 2008/01/20 07:58:19 msaitoh Exp $ */
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/*-
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* Copyright (c) 1998, 1999, 2000, 2001 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Manuel Bouyer.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* driver for National Semiconductor's DP83843 `PHYTER' ethernet 10/100 PHY
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* Data Sheet available from www.national.com
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*
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* We also support the DP83815 `MacPHYTER' internal PHY since, for our
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* purposes, they are compatible.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/errno.h>
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#include <sys/kernel.h>
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#include <sys/module.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 "miidevs.h"
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#include <dev/mii/nsphyterreg.h>
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#include "miibus_if.h"
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static device_probe_t nsphyter_probe;
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static device_attach_t nsphyter_attach;
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static device_method_t nsphyter_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, nsphyter_probe),
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DEVMETHOD(device_attach, nsphyter_attach),
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DEVMETHOD(device_detach, mii_phy_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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{ 0, 0 }
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};
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static devclass_t nsphyter_devclass;
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static driver_t nsphyter_driver = {
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"nsphyter",
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nsphyter_methods,
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sizeof(struct mii_softc)
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};
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DRIVER_MODULE(nsphyter, miibus, nsphyter_driver, nsphyter_devclass, 0, 0);
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static int nsphyter_service(struct mii_softc *, struct mii_data *, int);
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static void nsphyter_status(struct mii_softc *);
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static void nsphyter_reset(struct mii_softc *);
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static const struct mii_phydesc nsphys[] = {
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MII_PHY_DESC(NATSEMI, DP83815),
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MII_PHY_DESC(NATSEMI, DP83843),
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MII_PHY_DESC(NATSEMI, DP83847),
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MII_PHY_END
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};
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static int
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nsphyter_probe(device_t dev)
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{
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return (mii_phy_dev_probe(dev, nsphys, BUS_PROBE_DEFAULT));
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}
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static int
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nsphyter_attach(device_t dev)
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{
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struct mii_softc *sc;
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struct mii_attach_args *ma;
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struct mii_data *mii;
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const char *nic;
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sc = device_get_softc(dev);
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ma = device_get_ivars(dev);
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sc->mii_dev = device_get_parent(dev);
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mii = device_get_softc(sc->mii_dev);
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LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
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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_service = nsphyter_service;
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sc->mii_pdata = mii;
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mii->mii_instance++;
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#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
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nic = device_get_name(device_get_parent(sc->mii_dev));
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/*
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* In order for MII loopback to work Am79C971 and greater PCnet
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* chips additionally need to be placed into external loopback
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* mode which pcn(4) doesn't do so far.
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*/
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if (strcmp(nic, "pcn") != 0)
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#if 1
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP,
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sc->mii_inst), MII_MEDIA_100_TX);
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#else
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if (strcmp(nic, "pcn") == 0)
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sc->mii_flags |= MIIF_NOLOOP;
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#endif
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nsphyter_reset(sc);
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sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
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device_printf(dev, " ");
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mii_phy_add_media(sc);
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printf("\n");
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#undef ADD
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MIIBUS_MEDIAINIT(sc->mii_dev);
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return (0);
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}
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static int
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nsphyter_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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int reg;
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switch (cmd) {
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case MII_POLLSTAT:
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/*
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* If we're not polling our PHY instance, just return.
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*/
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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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reg = 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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/*
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* If the interface is not up, don't do anything.
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*/
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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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/*
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* If we're not currently selected, just return.
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*/
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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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}
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/* Update the media status. */
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nsphyter_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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nsphyter_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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int bmsr, bmcr, physts;
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mii->mii_media_status = IFM_AVALID;
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mii->mii_media_active = IFM_ETHER;
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bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
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physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS);
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if ((physts & PHYSTS_LINK) != 0)
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mii->mii_media_status |= IFM_ACTIVE;
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bmcr = PHY_READ(sc, MII_BMCR);
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if ((bmcr & BMCR_ISO) != 0) {
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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) != 0)
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mii->mii_media_active |= IFM_LOOP;
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if ((bmcr & BMCR_AUTOEN) != 0) {
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/*
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* The media status bits are only valid if autonegotiation
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* has completed (or it's disabled).
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*/
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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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if ((physts & PHYSTS_SPEED10) != 0)
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mii->mii_media_active |= IFM_10_T;
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else
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mii->mii_media_active |= IFM_100_TX;
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if ((physts & PHYSTS_DUPLEX) != 0)
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#ifdef notyet
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mii->mii_media_active |=
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IFM_FDX | mii_phy_flowstatus(sc);
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#else
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mii->mii_media_active |= IFM_FDX;
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#endif
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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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static void
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nsphyter_reset(struct mii_softc *sc)
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{
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struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur;
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int reg, i;
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if ((sc->mii_flags & MIIF_NOISOLATE) != 0)
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reg = BMCR_RESET;
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else
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reg = BMCR_RESET | BMCR_ISO;
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PHY_WRITE(sc, MII_BMCR, reg);
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/*
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* It is best to allow a little time for the reset to settle
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* in before we start polling the BMCR again. Notably, the
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* DP8384{3,7} manuals state that there should be a 500us delay
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* between asserting software reset and attempting MII serial
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* operations. Be conservative. Also, a DP83815 can get into
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* a bad state on cable removal and reinsertion if we do not
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* delay here.
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*/
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DELAY(1000);
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/*
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* Wait another 2s for it to complete.
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* This is only a little overkill as under normal circumstances
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* the PHY can take up to 1s to complete reset.
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* This is also a bit odd because after a reset, the BMCR will
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* clear the reset bit and simply reports 0 even though the reset
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* is not yet complete.
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*/
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for (i = 0; i < 1000; i++) {
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reg = PHY_READ(sc, MII_BMCR);
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if (reg != 0 && (reg & BMCR_RESET) == 0)
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break;
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DELAY(2000);
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}
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if ((sc->mii_flags & MIIF_NOISOLATE) == 0) {
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if ((ife == NULL && sc->mii_inst != 0) ||
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(ife != NULL && IFM_INST(ife->ifm_media) != sc->mii_inst))
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PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
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}
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}
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