1/*- 2 * Copyright (c) 1997, 1998, 1999 3 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD$"); 35 36/* 37 * driver for AMD AM79c873 PHYs 38 * This driver also works for Davicom DM910{1,2} PHYs, which appear 39 * to be AM79c873 workalikes. 40 */ 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/kernel.h> 45#include <sys/module.h> 46#include <sys/socket.h> 47#include <sys/bus.h> 48 49#include <net/if.h> 50#include <net/if_media.h> 51 52#include <dev/mii/mii.h> 53#include <dev/mii/miivar.h> 54#include "miidevs.h" 55 56#include <dev/mii/amphyreg.h> 57 58#include "miibus_if.h" 59 60static int amphy_probe(device_t); 61static int amphy_attach(device_t); 62 63static device_method_t amphy_methods[] = { 64 /* device interface */ 65 DEVMETHOD(device_probe, amphy_probe), 66 DEVMETHOD(device_attach, amphy_attach), 67 DEVMETHOD(device_detach, mii_phy_detach), 68 DEVMETHOD(device_shutdown, bus_generic_shutdown), 69 DEVMETHOD_END 70}; 71 72static devclass_t amphy_devclass; 73 74static driver_t amphy_driver = { 75 "amphy", 76 amphy_methods, 77 sizeof(struct mii_softc) 78}; 79 80DRIVER_MODULE(amphy, miibus, amphy_driver, amphy_devclass, 0, 0); 81 82static int amphy_service(struct mii_softc *, struct mii_data *, int); 83static void amphy_status(struct mii_softc *); 84 85static const struct mii_phydesc amphys[] = { 86 MII_PHY_DESC(xxDAVICOM, DM9102), 87 MII_PHY_DESC(xxDAVICOM, DM9101), 88 MII_PHY_DESC(yyDAVICOM, DM9101), 89 MII_PHY_END 90}; 91 92static const struct mii_phy_funcs amphy_funcs = { 93 amphy_service, 94 amphy_status, 95 mii_phy_reset 96}; 97 98static int 99amphy_probe(device_t dev) 100{ 101 102 return (mii_phy_dev_probe(dev, amphys, BUS_PROBE_DEFAULT)); 103} 104 105static int 106amphy_attach(device_t dev) 107{ 108 109 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &hy_funcs, 1); 110 return (0); 111} 112 113static int 114amphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 115{ 116 117 switch (cmd) { 118 case MII_POLLSTAT: 119 break; 120 121 case MII_MEDIACHG: 122 /* 123 * If the interface is not up, don't do anything. 124 */ 125 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 126 break; 127 128 mii_phy_setmedia(sc); 129 break; 130 131 case MII_TICK: 132 if (mii_phy_tick(sc) == EJUSTRETURN) 133 return (0); 134 break; 135 } 136 137 /* Update the media status. */ 138 PHY_STATUS(sc); 139 140 /* Callback if something changed. */ 141 mii_phy_update(sc, cmd); 142 return (0); 143} 144 145static void 146amphy_status(struct mii_softc *sc) 147{ 148 struct mii_data *mii = sc->mii_pdata; 149 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 150 int bmsr, bmcr, par, anlpar; 151 152 mii->mii_media_status = IFM_AVALID; 153 mii->mii_media_active = IFM_ETHER; 154 155 bmsr = PHY_READ(sc, MII_BMSR) | 156 PHY_READ(sc, MII_BMSR); 157 if (bmsr & BMSR_LINK) 158 mii->mii_media_status |= IFM_ACTIVE; 159 160 bmcr = PHY_READ(sc, MII_BMCR); 161 if (bmcr & BMCR_ISO) { 162 mii->mii_media_active |= IFM_NONE; 163 mii->mii_media_status = 0; 164 return; 165 } 166 167 if (bmcr & BMCR_LOOP) 168 mii->mii_media_active |= IFM_LOOP; 169 170 if (bmcr & BMCR_AUTOEN) { 171 /* 172 * The PAR status bits are only valid if autonegotiation 173 * has completed (or it's disabled). 174 */ 175 if ((bmsr & BMSR_ACOMP) == 0) { 176 /* Erg, still trying, I guess... */ 177 mii->mii_media_active |= IFM_NONE; 178 return; 179 } 180 181 if (PHY_READ(sc, MII_ANER) & ANER_LPAN) { 182 anlpar = PHY_READ(sc, MII_ANAR) & 183 PHY_READ(sc, MII_ANLPAR); 184 if (anlpar & ANLPAR_TX_FD) 185 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 186 else if (anlpar & ANLPAR_T4) 187 mii->mii_media_active |= IFM_100_T4|IFM_HDX; 188 else if (anlpar & ANLPAR_TX) 189 mii->mii_media_active |= IFM_100_TX|IFM_HDX; 190 else if (anlpar & ANLPAR_10_FD) 191 mii->mii_media_active |= IFM_10_T|IFM_FDX; 192 else if (anlpar & ANLPAR_10) 193 mii->mii_media_active |= IFM_10_T|IFM_HDX; 194 else 195 mii->mii_media_active |= IFM_NONE; 196 return; 197 } 198 199 /* 200 * Link partner is not capable of autonegotiation. 201 */ 202 par = PHY_READ(sc, MII_AMPHY_DSCSR); 203 if (par & DSCSR_100FDX) 204 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 205 else if (par & DSCSR_100HDX) 206 mii->mii_media_active |= IFM_100_TX|IFM_HDX; 207 else if (par & DSCSR_10FDX) 208 mii->mii_media_active |= IFM_10_T|IFM_HDX; 209 else if (par & DSCSR_10HDX) 210 mii->mii_media_active |= IFM_10_T|IFM_HDX; 211 if ((mii->mii_media_active & IFM_FDX) != 0) 212 mii->mii_media_active |= mii_phy_flowstatus(sc); 213 } else 214 mii->mii_media_active = ife->ifm_media; 215} 216