1 /* $OpenBSD: mtdphy.c,v 1.15 2015/03/14 03:38:48 jsg 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_var.h> 42 #include <net/if_media.h> 43 44 #include <dev/mii/mii.h> 45 #include <dev/mii/miivar.h> 46 #include <dev/mii/miidevs.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 }; 54 55 struct cfdriver mtdphy_cd = { 56 NULL, "mtdphy", DV_DULL 57 }; 58 59 int mtdphy_service(struct mii_softc *, struct mii_data *, int); 60 61 const struct mii_phy_funcs mtdphy_funcs = { 62 mtdphy_service, ukphy_status, mii_phy_reset, 63 }; 64 65 static const struct mii_phydesc mtdphys[] = { 66 { MII_OUI_MYSON, MII_MODEL_MYSON_MTD972, 67 MII_STR_MYSON_MTD972 }, 68 69 { 0, 0, 70 NULL }, 71 }; 72 73 int 74 mtdphymatch(struct device *parent, void *match, void *aux) 75 { 76 struct mii_attach_args *ma = aux; 77 78 if (mii_phy_match(ma, mtdphys) != NULL) 79 return (10); 80 81 return (0); 82 } 83 84 void 85 mtdphyattach(struct device *parent, struct device *self, void *aux) 86 { 87 struct mii_softc *sc = (struct mii_softc *)self; 88 struct mii_attach_args *ma = aux; 89 struct mii_data *mii = ma->mii_data; 90 const struct mii_phydesc *mpd; 91 92 mpd = mii_phy_match(ma, mtdphys); 93 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 94 95 sc->mii_inst = mii->mii_instance; 96 sc->mii_phy = ma->mii_phyno; 97 sc->mii_funcs = &mtdphy_funcs; 98 sc->mii_pdata = mii; 99 sc->mii_flags = ma->mii_flags; 100 101 PHY_RESET(sc); 102 103 sc->mii_capabilities = 104 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 105 if (sc->mii_capabilities & BMSR_MEDIAMASK) 106 mii_phy_add_media(sc); 107 } 108 109 int 110 mtdphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 111 { 112 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 113 int reg; 114 115 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 116 return (ENXIO); 117 118 switch (cmd) { 119 case MII_POLLSTAT: 120 /* 121 * If we're not polling our PHY instance, just return. 122 */ 123 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 124 return (0); 125 break; 126 127 case MII_MEDIACHG: 128 /* 129 * If the interface is not up, don't do anything. 130 */ 131 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 132 reg = PHY_READ(sc, MII_BMCR); 133 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 134 return (0); 135 } 136 137 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 138 break; 139 140 mii_phy_setmedia(sc); 141 break; 142 143 case MII_TICK: 144 /* 145 *If we're not currently selected, just return. 146 */ 147 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 148 return (0); 149 150 if (mii_phy_tick(sc) == EJUSTRETURN) 151 return (0); 152 break; 153 154 case MII_DOWN: 155 mii_phy_down(sc); 156 return (0); 157 } 158 159 /* Update the media status. */ 160 mii_phy_status(sc); 161 162 /* Callback if something changed. */ 163 mii_phy_update(sc, cmd); 164 return (0); 165 } 166