11e04b0528
This driver now supports the Melco LUA-KTX and the GREEN HOUSE GH-USB100B. Reviewed by: imp MFC after: 2 weeks
298 lines
7.0 KiB
C
298 lines
7.0 KiB
C
/*-
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* Copyright (c) 2001-2003, Shunsuke Akiyama <akiyama@FreeBSD.org>.
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* 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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* driver for RealTek RTL8150 internal PHY
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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/kernel.h>
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#include <sys/malloc.h>
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#include <sys/socket.h>
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#include <sys/bus.h>
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#include <net/if.h>
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#include <net/if_arp.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 <machine/bus.h>
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#include <dev/mii/ruephyreg.h>
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#include "miibus_if.h"
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static int ruephy_probe(device_t);
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static int ruephy_attach(device_t);
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static device_method_t ruephy_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, ruephy_probe),
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DEVMETHOD(device_attach, ruephy_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 ruephy_devclass;
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static driver_t ruephy_driver = {
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"ruephy",
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ruephy_methods,
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sizeof(struct mii_softc)
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};
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DRIVER_MODULE(ruephy, miibus, ruephy_driver, ruephy_devclass, 0, 0);
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static int ruephy_service(struct mii_softc *, struct mii_data *, int);
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static void ruephy_reset(struct mii_softc *);
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static void ruephy_status(struct mii_softc *);
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static int
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ruephy_probe(device_t dev)
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{
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struct mii_attach_args *ma;
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device_t parent;
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ma = device_get_ivars(dev);
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parent = device_get_parent(device_get_parent(dev));
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/*
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* RealTek RTL8150 PHY doesn't have vendor/device ID registers:
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* the rue driver fakes up a return value of all zeros.
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*/
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if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
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MII_MODEL(ma->mii_id2) != 0)
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return (ENXIO);
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/*
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* Make sure the parent is an 'rue'.
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*/
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if (strcmp(device_get_name(parent), "rue") != 0)
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return (ENXIO);
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device_set_desc(dev, "RealTek RTL8150 internal media interface");
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return (0);
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}
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static int
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ruephy_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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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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/*
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* The RealTek PHY can never be isolated, so never allow non-zero
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* instances!
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*/
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if (mii->mii_instance != 0) {
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device_printf(dev, "ignoring this PHY, non-zero instance\n");
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return (ENXIO);
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}
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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 = ruephy_service;
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sc->mii_pdata = mii;
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mii->mii_instance++;
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sc->mii_flags |= MIIF_NOISOLATE;
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#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
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ruephy_reset(sc);
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sc->mii_capabilities =
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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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ruephy_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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/*
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* We can't isolate the RealTek RTL8150 PHY,
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* so it has to be the only one!
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*/
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if (IFM_INST(ife->ifm_media) != sc->mii_inst)
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panic("ruephy_service: can't isolate RealTek RTL8150 PHY");
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switch (cmd) {
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case MII_POLLSTAT:
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break;
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case MII_MEDIACHG:
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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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switch (IFM_SUBTYPE(ife->ifm_media)) {
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case IFM_AUTO:
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/*
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* If we're already in auto mode, just return.
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*/
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if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
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return (0);
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(void) mii_phy_auto(sc);
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break;
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case IFM_100_T4:
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/*
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* XXX Not supported as a manual setting right now.
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*/
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return (EINVAL);
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default:
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/*
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* BMCR data is stored in the ifmedia entry.
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*/
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PHY_WRITE(sc, MII_ANAR,
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mii_anar(ife->ifm_media));
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PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
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}
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break;
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case MII_TICK:
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/*
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* Is the interface even up?
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*/
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if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
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return (0);
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/*
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* Only used for autonegotiation.
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*/
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if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
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break;
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/*
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* Check to see if we have link. If we do, we don't
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* need to restart the autonegotiation process. Read
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* the MSR twice in case it's latched.
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*/
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reg = PHY_READ(sc, RUEPHY_MII_MSR) |
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PHY_READ(sc, RUEPHY_MII_MSR);
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if (reg & RUEPHY_MSR_LINK)
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break;
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/*
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* Only retry autonegotiation every 5 seconds.
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*/
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if (++sc->mii_ticks != 5)
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return (0);
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sc->mii_ticks = 0;
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ruephy_reset(sc);
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if (mii_phy_auto(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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ruephy_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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ruephy_reset(struct mii_softc *sc)
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{
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mii_phy_reset(sc);
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/*
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* XXX RealTek RTL8150 PHY doesn't set the BMCR properly after
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* XXX reset, which breaks autonegotiation.
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*/
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PHY_WRITE(sc, MII_BMCR, (BMCR_S100 | BMCR_AUTOEN | BMCR_FDX));
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}
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static void
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ruephy_status(struct mii_softc *phy)
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{
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struct mii_data *mii = phy->mii_pdata;
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int bmsr, bmcr, msr;
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mii->mii_media_status = IFM_AVALID;
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mii->mii_media_active = IFM_ETHER;
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msr = PHY_READ(phy, RUEPHY_MII_MSR) | PHY_READ(phy, RUEPHY_MII_MSR);
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if (msr & RUEPHY_MSR_LINK)
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mii->mii_media_status |= IFM_ACTIVE;
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bmcr = PHY_READ(phy, MII_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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bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
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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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if (msr & RUEPHY_MSR_SPEED100)
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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 (msr & RUEPHY_MSR_DUPLEX)
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mii->mii_media_active |= IFM_FDX;
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} else
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mii->mii_media_active = mii_media_from_bmcr(bmcr);
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}
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