1239275Sgonzo/*- 2239275Sgonzo * Copyright (c) 2006 Benno Rice. All rights reserved. 3239275Sgonzo * 4239275Sgonzo * Redistribution and use in source and binary forms, with or without 5239275Sgonzo * modification, are permitted provided that the following conditions 6239275Sgonzo * are met: 7239275Sgonzo * 1. Redistributions of source code must retain the above copyright 8239275Sgonzo * notice, this list of conditions and the following disclaimer. 9239275Sgonzo * 2. Redistributions in binary form must reproduce the above copyright 10239275Sgonzo * notice, this list of conditions and the following disclaimer in the 11239275Sgonzo * documentation and/or other materials provided with the distribution. 12239275Sgonzo * 13239275Sgonzo * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14239275Sgonzo * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15239275Sgonzo * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16239275Sgonzo * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17239275Sgonzo * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18239275Sgonzo * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 19239275Sgonzo * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 20239275Sgonzo * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21239275Sgonzo * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22239275Sgonzo * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23239275Sgonzo */ 24239275Sgonzo 25239275Sgonzo#include <sys/cdefs.h> 26239275Sgonzo__FBSDID("$FreeBSD$"); 27239275Sgonzo 28239275Sgonzo/* 29239275Sgonzo * Driver for the SMSC LAN8710A 30239275Sgonzo */ 31239275Sgonzo 32239275Sgonzo#include <sys/param.h> 33239275Sgonzo#include <sys/systm.h> 34239275Sgonzo#include <sys/kernel.h> 35239275Sgonzo#include <sys/socket.h> 36239275Sgonzo#include <sys/errno.h> 37239275Sgonzo#include <sys/module.h> 38239275Sgonzo#include <sys/bus.h> 39239275Sgonzo#include <sys/malloc.h> 40239275Sgonzo 41239275Sgonzo#include <machine/bus.h> 42239275Sgonzo 43239275Sgonzo#include <net/if.h> 44239275Sgonzo#include <net/if_media.h> 45239275Sgonzo 46239275Sgonzo#include <dev/mii/mii.h> 47239275Sgonzo#include <dev/mii/miivar.h> 48239275Sgonzo#include "miidevs.h" 49239275Sgonzo 50239275Sgonzo#include "miibus_if.h" 51239275Sgonzo 52239275Sgonzostatic int smscphy_probe(device_t); 53239275Sgonzostatic int smscphy_attach(device_t); 54239275Sgonzo 55239275Sgonzostatic int smscphy_service(struct mii_softc *, struct mii_data *, int); 56239275Sgonzostatic void smscphy_auto(struct mii_softc *, int); 57239275Sgonzostatic void smscphy_status(struct mii_softc *); 58239275Sgonzo 59239275Sgonzostatic device_method_t smscphy_methods[] = { 60239275Sgonzo /* device interface */ 61239275Sgonzo DEVMETHOD(device_probe, smscphy_probe), 62239275Sgonzo DEVMETHOD(device_attach, smscphy_attach), 63239275Sgonzo DEVMETHOD(device_detach, mii_phy_detach), 64239275Sgonzo DEVMETHOD(device_shutdown, bus_generic_shutdown), 65239275Sgonzo DEVMETHOD_END 66239275Sgonzo}; 67239275Sgonzo 68239275Sgonzostatic devclass_t smscphy_devclass; 69239275Sgonzo 70239275Sgonzostatic driver_t smscphy_driver = { 71239275Sgonzo "smscphy", 72239275Sgonzo smscphy_methods, 73239275Sgonzo sizeof(struct mii_softc) 74239275Sgonzo}; 75239275Sgonzo 76239275SgonzoDRIVER_MODULE(smscphy, miibus, smscphy_driver, smscphy_devclass, 0, 0); 77239275Sgonzo 78239275Sgonzostatic const struct mii_phydesc smscphys[] = { 79239275Sgonzo MII_PHY_DESC(SMC, LAN8710A), 80239275Sgonzo MII_PHY_END 81239275Sgonzo}; 82239275Sgonzo 83239275Sgonzostatic const struct mii_phy_funcs smscphy_funcs = { 84239275Sgonzo smscphy_service, 85239275Sgonzo smscphy_status, 86239275Sgonzo mii_phy_reset 87239275Sgonzo}; 88239275Sgonzo 89239275Sgonzostatic int 90239275Sgonzosmscphy_probe(device_t dev) 91239275Sgonzo{ 92239275Sgonzo 93239275Sgonzo return (mii_phy_dev_probe(dev, smscphys, BUS_PROBE_DEFAULT)); 94239275Sgonzo} 95239275Sgonzo 96239275Sgonzostatic int 97239275Sgonzosmscphy_attach(device_t dev) 98239275Sgonzo{ 99239275Sgonzo struct mii_softc *sc; 100239275Sgonzo const struct mii_phy_funcs *mpf; 101239275Sgonzo 102239275Sgonzo sc = device_get_softc(dev); 103239275Sgonzo mpf = &smscphy_funcs; 104239275Sgonzo mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, mpf, 1); 105239275Sgonzo mii_phy_setmedia(sc); 106239275Sgonzo 107239275Sgonzo return (0); 108239275Sgonzo} 109239275Sgonzo 110239275Sgonzostatic int 111239275Sgonzosmscphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 112239275Sgonzo{ 113239275Sgonzo struct ifmedia_entry *ife; 114239275Sgonzo int reg; 115239275Sgonzo 116239275Sgonzo ife = mii->mii_media.ifm_cur; 117239275Sgonzo 118239275Sgonzo switch (cmd) { 119239275Sgonzo case MII_POLLSTAT: 120239275Sgonzo break; 121239275Sgonzo 122239275Sgonzo case MII_MEDIACHG: 123239275Sgonzo /* 124239275Sgonzo * If the interface is not up, don't do anything. 125239275Sgonzo */ 126239275Sgonzo if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 127239275Sgonzo break; 128239275Sgonzo 129239275Sgonzo switch (IFM_SUBTYPE(ife->ifm_media)) { 130239275Sgonzo case IFM_AUTO: 131239275Sgonzo smscphy_auto(sc, ife->ifm_media); 132239275Sgonzo break; 133239275Sgonzo 134239275Sgonzo default: 135239275Sgonzo mii_phy_setmedia(sc); 136239275Sgonzo break; 137239275Sgonzo } 138239275Sgonzo 139239275Sgonzo break; 140239275Sgonzo 141239275Sgonzo case MII_TICK: 142239275Sgonzo if ((mii->mii_ifp->if_flags & IFF_UP) == 0) { 143239275Sgonzo return (0); 144239275Sgonzo } 145239275Sgonzo 146239275Sgonzo if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { 147239275Sgonzo break; 148239275Sgonzo } 149239275Sgonzo 150239275Sgonzo /* I have no idea why BMCR_ISO gets set. */ 151239275Sgonzo reg = PHY_READ(sc, MII_BMCR); 152239275Sgonzo if (reg & BMCR_ISO) { 153239275Sgonzo PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO); 154239275Sgonzo } 155239275Sgonzo 156239275Sgonzo reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 157239275Sgonzo if (reg & BMSR_LINK) { 158239275Sgonzo sc->mii_ticks = 0; 159239275Sgonzo break; 160239275Sgonzo } 161239275Sgonzo 162239275Sgonzo if (++sc->mii_ticks <= MII_ANEGTICKS) { 163239275Sgonzo break; 164239275Sgonzo } 165239275Sgonzo 166239275Sgonzo sc->mii_ticks = 0; 167239275Sgonzo PHY_RESET(sc); 168239275Sgonzo smscphy_auto(sc, ife->ifm_media); 169239275Sgonzo break; 170239275Sgonzo } 171239275Sgonzo 172239275Sgonzo /* Update the media status. */ 173239275Sgonzo PHY_STATUS(sc); 174239275Sgonzo 175239275Sgonzo /* Callback if something changed. */ 176239275Sgonzo mii_phy_update(sc, cmd); 177239275Sgonzo return (0); 178239275Sgonzo} 179239275Sgonzo 180239275Sgonzostatic void 181239275Sgonzosmscphy_auto(struct mii_softc *sc, int media) 182239275Sgonzo{ 183239275Sgonzo uint16_t anar; 184239275Sgonzo 185239275Sgonzo anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) | ANAR_CSMA; 186239275Sgonzo if ((media & IFM_FLOW) != 0 || (sc->mii_flags & MIIF_FORCEPAUSE) != 0) 187239275Sgonzo anar |= ANAR_FC; 188239275Sgonzo PHY_WRITE(sc, MII_ANAR, anar); 189239275Sgonzo /* Apparently this helps. */ 190239275Sgonzo anar = PHY_READ(sc, MII_ANAR); 191239275Sgonzo PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG); 192239275Sgonzo} 193239275Sgonzo 194239275Sgonzostatic void 195239275Sgonzosmscphy_status(struct mii_softc *sc) 196239275Sgonzo{ 197239275Sgonzo struct mii_data *mii; 198239275Sgonzo uint32_t bmcr, bmsr, status; 199239275Sgonzo 200239275Sgonzo mii = sc->mii_pdata; 201239275Sgonzo mii->mii_media_status = IFM_AVALID; 202239275Sgonzo mii->mii_media_active = IFM_ETHER; 203239275Sgonzo 204239275Sgonzo bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 205239275Sgonzo if ((bmsr & BMSR_LINK) != 0) 206239275Sgonzo mii->mii_media_status |= IFM_ACTIVE; 207239275Sgonzo 208239275Sgonzo bmcr = PHY_READ(sc, MII_BMCR); 209239275Sgonzo if ((bmcr & BMCR_ISO) != 0) { 210239275Sgonzo mii->mii_media_active |= IFM_NONE; 211239275Sgonzo mii->mii_media_status = 0; 212239275Sgonzo return; 213239275Sgonzo } 214239275Sgonzo 215239275Sgonzo if ((bmcr & BMCR_LOOP) != 0) 216239275Sgonzo mii->mii_media_active |= IFM_LOOP; 217239275Sgonzo 218239275Sgonzo if ((bmcr & BMCR_AUTOEN) != 0) { 219239275Sgonzo if ((bmsr & BMSR_ACOMP) == 0) { 220239275Sgonzo /* Erg, still trying, I guess... */ 221239275Sgonzo mii->mii_media_active |= IFM_NONE; 222239275Sgonzo return; 223239275Sgonzo } 224239275Sgonzo } 225239275Sgonzo 226239275Sgonzo status = PHY_READ(sc, 0x1F); 227239275Sgonzo if (status & 0x0008) 228239275Sgonzo mii->mii_media_active |= IFM_100_TX; 229239275Sgonzo else 230239275Sgonzo mii->mii_media_active |= IFM_10_T; 231239275Sgonzo if (status & 0x0010) 232239275Sgonzo mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc); 233239275Sgonzo else 234239275Sgonzo mii->mii_media_active |= IFM_HDX; 235239275Sgonzo} 236