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 60 static int amphy_probe(device_t); 61 static int amphy_attach(device_t); 62 63 static 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 { 0, 0 } 70 }; 71 72 static devclass_t amphy_devclass; 73 74 static driver_t amphy_driver = { 75 "amphy", 76 amphy_methods, 77 sizeof(struct mii_softc) 78 }; 79 80 DRIVER_MODULE(amphy, miibus, amphy_driver, amphy_devclass, 0, 0); 81 82 static int amphy_service(struct mii_softc *, struct mii_data *, int); 83 static void amphy_status(struct mii_softc *); 84 85 static const struct mii_phydesc amphys[] = { 86 MII_PHY_DESC(DAVICOM, DM9102), 87 MII_PHY_DESC(xxAMD, 79C873), 88 MII_PHY_DESC(xxDAVICOM, DM9101), 89 MII_PHY_END 90 }; 91 92 static int 93 amphy_probe(device_t dev) 94 { 95 96 return (mii_phy_dev_probe(dev, amphys, BUS_PROBE_DEFAULT)); 97 } 98 99 static int 100 amphy_attach(device_t dev) 101 { 102 struct mii_softc *sc; 103 struct mii_attach_args *ma; 104 struct mii_data *mii; 105 106 sc = device_get_softc(dev); 107 ma = device_get_ivars(dev); 108 sc->mii_dev = device_get_parent(dev); 109 mii = ma->mii_data; 110 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 111 112 sc->mii_flags = miibus_get_flags(dev); 113 sc->mii_inst = mii->mii_instance++; 114 sc->mii_phy = ma->mii_phyno; 115 sc->mii_service = amphy_service; 116 sc->mii_pdata = mii; 117 118 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 119 120 #if 0 121 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 122 MII_MEDIA_100_TX); 123 #endif 124 125 mii_phy_reset(sc); 126 127 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 128 device_printf(dev, " "); 129 mii_phy_add_media(sc); 130 printf("\n"); 131 #undef ADD 132 MIIBUS_MEDIAINIT(sc->mii_dev); 133 return (0); 134 } 135 136 static int 137 amphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 138 { 139 140 switch (cmd) { 141 case MII_POLLSTAT: 142 break; 143 144 case MII_MEDIACHG: 145 /* 146 * If the interface is not up, don't do anything. 147 */ 148 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 149 break; 150 151 mii_phy_setmedia(sc); 152 break; 153 154 case MII_TICK: 155 if (mii_phy_tick(sc) == EJUSTRETURN) 156 return (0); 157 break; 158 } 159 160 /* Update the media status. */ 161 amphy_status(sc); 162 163 /* Callback if something changed. */ 164 mii_phy_update(sc, cmd); 165 return (0); 166 } 167 168 static void 169 amphy_status(struct mii_softc *sc) 170 { 171 struct mii_data *mii = sc->mii_pdata; 172 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 173 int bmsr, bmcr, par, anlpar; 174 175 mii->mii_media_status = IFM_AVALID; 176 mii->mii_media_active = IFM_ETHER; 177 178 bmsr = PHY_READ(sc, MII_BMSR) | 179 PHY_READ(sc, MII_BMSR); 180 if (bmsr & BMSR_LINK) 181 mii->mii_media_status |= IFM_ACTIVE; 182 183 bmcr = PHY_READ(sc, MII_BMCR); 184 if (bmcr & BMCR_ISO) { 185 mii->mii_media_active |= IFM_NONE; 186 mii->mii_media_status = 0; 187 return; 188 } 189 190 if (bmcr & BMCR_LOOP) 191 mii->mii_media_active |= IFM_LOOP; 192 193 if (bmcr & BMCR_AUTOEN) { 194 /* 195 * The PAR status bits are only valid if autonegotiation 196 * has completed (or it's disabled). 197 */ 198 if ((bmsr & BMSR_ACOMP) == 0) { 199 /* Erg, still trying, I guess... */ 200 mii->mii_media_active |= IFM_NONE; 201 return; 202 } 203 204 if (PHY_READ(sc, MII_ANER) & ANER_LPAN) { 205 anlpar = PHY_READ(sc, MII_ANAR) & 206 PHY_READ(sc, MII_ANLPAR); 207 if (anlpar & ANLPAR_TX_FD) 208 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 209 else if (anlpar & ANLPAR_T4) 210 mii->mii_media_active |= IFM_100_T4|IFM_HDX; 211 else if (anlpar & ANLPAR_TX) 212 mii->mii_media_active |= IFM_100_TX|IFM_HDX; 213 else if (anlpar & ANLPAR_10_FD) 214 mii->mii_media_active |= IFM_10_T|IFM_FDX; 215 else if (anlpar & ANLPAR_10) 216 mii->mii_media_active |= IFM_10_T|IFM_HDX; 217 else 218 mii->mii_media_active |= IFM_NONE; 219 return; 220 } 221 222 /* 223 * Link partner is not capable of autonegotiation. 224 */ 225 par = PHY_READ(sc, MII_AMPHY_DSCSR); 226 if (par & DSCSR_100FDX) 227 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 228 else if (par & DSCSR_100HDX) 229 mii->mii_media_active |= IFM_100_TX|IFM_HDX; 230 else if (par & DSCSR_10FDX) 231 mii->mii_media_active |= IFM_10_T|IFM_HDX; 232 else if (par & DSCSR_10HDX) 233 mii->mii_media_active |= IFM_10_T|IFM_HDX; 234 } else 235 mii->mii_media_active = ife->ifm_media; 236 } 237