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 DEVMETHOD_END 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(xxASIX, AX88X9X), 77 MII_PHY_END 78 }; 79 80 static const struct mii_phy_funcs axphy_funcs = { 81 axphy_service, 82 axphy_status, 83 mii_phy_reset 84 }; 85 86 static int 87 axphy_probe(device_t dev) 88 { 89 90 return (mii_phy_dev_probe(dev, axphys, BUS_PROBE_DEFAULT)); 91 } 92 93 static int 94 axphy_attach(device_t dev) 95 { 96 struct mii_softc *sc; 97 98 sc = device_get_softc(dev); 99 100 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 101 &axphy_funcs, 1); 102 mii_phy_setmedia(sc); 103 104 return (0); 105 } 106 107 static int 108 axphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 109 { 110 111 switch (cmd) { 112 case MII_POLLSTAT: 113 break; 114 115 case MII_MEDIACHG: 116 /* 117 * If the interface is not up, don't do anything. 118 */ 119 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 120 break; 121 122 mii_phy_setmedia(sc); 123 break; 124 125 case MII_TICK: 126 if (mii_phy_tick(sc) == EJUSTRETURN) 127 return (0); 128 break; 129 } 130 131 /* Update the media status. */ 132 PHY_STATUS(sc); 133 134 /* Callback if something changed. */ 135 mii_phy_update(sc, cmd); 136 return (0); 137 } 138 139 static void 140 axphy_status(struct mii_softc *sc) 141 { 142 struct mii_data *mii = sc->mii_pdata; 143 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 144 int bmsr, bmcr; 145 146 mii->mii_media_status = IFM_AVALID; 147 mii->mii_media_active = IFM_ETHER; 148 149 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 150 if (bmsr & BMSR_LINK) 151 mii->mii_media_status |= IFM_ACTIVE; 152 153 bmcr = PHY_READ(sc, MII_BMCR); 154 if (bmcr & BMCR_ISO) { 155 mii->mii_media_active |= IFM_NONE; 156 mii->mii_media_status = 0; 157 return; 158 } 159 160 if (bmcr & BMCR_LOOP) 161 mii->mii_media_active |= IFM_LOOP; 162 163 if (bmcr & BMCR_AUTOEN) { 164 if ((bmsr & BMSR_ACOMP) == 0) { 165 mii->mii_media_active |= IFM_NONE; 166 return; 167 } 168 169 #if 0 170 scr = PHY_READ(sc, MII_AXPHY_SCR); 171 if (scr & SCR_S100) 172 mii->mii_media_active |= IFM_100_TX; 173 else 174 mii->mii_media_active |= IFM_10_T; 175 if (scr & SCR_FDX) 176 mii->mii_media_active |= 177 IFM_FDX | mii_phy_flowstatus(sc); 178 else 179 mii->mii_media_active |= IFM_HDX; 180 #endif 181 } else 182 mii->mii_media_active = ife->ifm_media; 183 } 184