1 /* $OpenBSD: mtdphy.c,v 1.12 2005/02/19 06:00:04 brad Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 1999 Jason L. Wright (jason@thought.net) 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * Driver for the Myson Technology MTD972 100BaseTX PCS/PMA. 31 */ 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/device.h> 37 #include <sys/socket.h> 38 #include <sys/errno.h> 39 40 #include <net/if.h> 41 #include <net/if_media.h> 42 43 #include <dev/mii/mii.h> 44 #include <dev/mii/miivar.h> 45 #include <dev/mii/miidevs.h> 46 #include <dev/mii/mtdphyreg.h> 47 48 int mtdphymatch(struct device *, void *, void *); 49 void mtdphyattach(struct device *, struct device *, void *); 50 51 struct cfattach mtdphy_ca = { 52 sizeof(struct mii_softc), mtdphymatch, mtdphyattach, mii_phy_detach, 53 mii_phy_activate 54 }; 55 56 struct cfdriver mtdphy_cd = { 57 NULL, "mtdphy", DV_DULL 58 }; 59 60 int mtdphy_service(struct mii_softc *, struct mii_data *, int); 61 62 const struct mii_phy_funcs mtdphy_funcs = { 63 mtdphy_service, ukphy_status, mii_phy_reset, 64 }; 65 66 static const struct mii_phydesc mtdphys[] = { 67 { MII_OUI_MYSON, MII_MODEL_MYSON_MTD972, 68 MII_STR_MYSON_MTD972 }, 69 70 { 0, 0, 71 NULL }, 72 }; 73 74 int 75 mtdphymatch(struct device *parent, void *match, void *aux) 76 { 77 struct mii_attach_args *ma = aux; 78 79 if (mii_phy_match(ma, mtdphys) != NULL) 80 return (10); 81 82 return (0); 83 } 84 85 void 86 mtdphyattach(struct device *parent, struct device *self, void *aux) 87 { 88 struct mii_softc *sc = (struct mii_softc *)self; 89 struct mii_attach_args *ma = aux; 90 struct mii_data *mii = ma->mii_data; 91 const struct mii_phydesc *mpd; 92 93 mpd = mii_phy_match(ma, mtdphys); 94 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 95 96 sc->mii_inst = mii->mii_instance; 97 sc->mii_phy = ma->mii_phyno; 98 sc->mii_funcs = &mtdphy_funcs; 99 sc->mii_pdata = mii; 100 sc->mii_flags = ma->mii_flags; 101 102 PHY_RESET(sc); 103 104 sc->mii_capabilities = 105 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 106 if (sc->mii_capabilities & BMSR_MEDIAMASK) 107 mii_phy_add_media(sc); 108 } 109 110 int 111 mtdphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 112 { 113 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 114 int reg; 115 116 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 117 return (ENXIO); 118 119 switch (cmd) { 120 case MII_POLLSTAT: 121 /* 122 * If we're not polling our PHY instance, just return. 123 */ 124 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 125 return (0); 126 break; 127 128 case MII_MEDIACHG: 129 /* 130 * If the interface is not up, don't do anything. 131 */ 132 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 133 reg = PHY_READ(sc, MII_BMCR); 134 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 135 return (0); 136 } 137 138 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 139 break; 140 141 mii_phy_setmedia(sc); 142 break; 143 144 case MII_TICK: 145 /* 146 *If we're not currently selected, just return. 147 */ 148 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 149 return (0); 150 151 if (mii_phy_tick(sc) == EJUSTRETURN) 152 return (0); 153 break; 154 155 case MII_DOWN: 156 mii_phy_down(sc); 157 return (0); 158 } 159 160 /* Update the media status. */ 161 mii_phy_status(sc); 162 163 /* Callback if something changed. */ 164 mii_phy_update(sc, cmd); 165 return (0); 166 } 167