1 /*- 2 * Copyright (c) 2009, M. Warner Losh 3 * 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 unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 /* 31 * driver for internal phy in the AX88x9x chips. 32 */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/module.h> 38 #include <sys/socket.h> 39 #include <sys/bus.h> 40 41 #include <net/if.h> 42 #include <net/if_media.h> 43 44 #include <dev/mii/mii.h> 45 #include <dev/mii/miivar.h> 46 #include "miidevs.h" 47 48 #include "miibus_if.h" 49 50 static int axphy_probe(device_t dev); 51 static int axphy_attach(device_t dev); 52 53 static device_method_t axphy_methods[] = { 54 /* device interface */ 55 DEVMETHOD(device_probe, axphy_probe), 56 DEVMETHOD(device_attach, axphy_attach), 57 DEVMETHOD(device_detach, mii_phy_detach), 58 DEVMETHOD(device_shutdown, bus_generic_shutdown), 59 { 0, 0 } 60 }; 61 62 static devclass_t axphy_devclass; 63 64 static driver_t axphy_driver = { 65 "axphy", 66 axphy_methods, 67 sizeof(struct mii_softc) 68 }; 69 70 DRIVER_MODULE(axphy, miibus, axphy_driver, axphy_devclass, 0, 0); 71 72 static int axphy_service(struct mii_softc *, struct mii_data *, int); 73 static void axphy_status(struct mii_softc *); 74 75 static const struct mii_phydesc axphys[] = { 76 MII_PHY_DESC(ASIX, AX88X9X), 77 MII_PHY_END 78 }; 79 80 static int 81 axphy_probe(device_t dev) 82 { 83 84 return (mii_phy_dev_probe(dev, axphys, BUS_PROBE_DEFAULT)); 85 } 86 87 static int 88 axphy_attach(device_t dev) 89 { 90 struct mii_softc *sc; 91 struct mii_attach_args *ma; 92 struct mii_data *mii; 93 94 sc = device_get_softc(dev); 95 ma = device_get_ivars(dev); 96 sc->mii_dev = device_get_parent(dev); 97 mii = ma->mii_data; 98 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 99 100 sc->mii_flags = miibus_get_flags(dev); 101 sc->mii_inst = mii->mii_instance++; 102 sc->mii_phy = ma->mii_phyno; 103 sc->mii_service = axphy_service; 104 sc->mii_pdata = mii; 105 106 sc->mii_flags |= MIIF_NOISOLATE; 107 108 mii_phy_reset(sc); 109 110 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 111 device_printf(dev, " "); 112 mii_phy_add_media(sc); 113 printf("\n"); 114 115 MIIBUS_MEDIAINIT(sc->mii_dev); 116 mii_phy_setmedia(sc); 117 118 return (0); 119 } 120 121 static int 122 axphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 123 { 124 125 switch (cmd) { 126 case MII_POLLSTAT: 127 break; 128 129 case MII_MEDIACHG: 130 /* 131 * If the interface is not up, don't do anything. 132 */ 133 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 134 break; 135 136 mii_phy_setmedia(sc); 137 break; 138 139 case MII_TICK: 140 if (mii_phy_tick(sc) == EJUSTRETURN) 141 return (0); 142 break; 143 } 144 145 /* Update the media status. */ 146 axphy_status(sc); 147 148 /* Callback if something changed. */ 149 mii_phy_update(sc, cmd); 150 return (0); 151 } 152 153 static void 154 axphy_status(struct mii_softc *sc) 155 { 156 struct mii_data *mii = sc->mii_pdata; 157 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 158 int bmsr, bmcr; 159 160 mii->mii_media_status = IFM_AVALID; 161 mii->mii_media_active = IFM_ETHER; 162 163 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 164 if (bmsr & BMSR_LINK) 165 mii->mii_media_status |= IFM_ACTIVE; 166 167 bmcr = PHY_READ(sc, MII_BMCR); 168 if (bmcr & BMCR_ISO) { 169 mii->mii_media_active |= IFM_NONE; 170 mii->mii_media_status = 0; 171 return; 172 } 173 174 if (bmcr & BMCR_LOOP) 175 mii->mii_media_active |= IFM_LOOP; 176 177 if (bmcr & BMCR_AUTOEN) { 178 if ((bmsr & BMSR_ACOMP) == 0) { 179 mii->mii_media_active |= IFM_NONE; 180 return; 181 } 182 183 #if 0 184 scr = PHY_READ(sc, MII_AXPHY_SCR); 185 if (scr & SCR_S100) 186 mii->mii_media_active |= IFM_100_TX; 187 else 188 mii->mii_media_active |= IFM_10_T; 189 if (scr & SCR_FDX) 190 mii->mii_media_active |= IFM_FDX; 191 else 192 mii->mii_media_active |= IFM_HDX; 193 #endif 194 } else 195 mii->mii_media_active = ife->ifm_media; 196 } 197