1 /* $NetBSD: ukphy.c,v 1.43 2010/06/06 18:58:22 pgoyette Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center, and by Frank van der Linden. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 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 THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 /* 58 * driver for generic unknown PHYs 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: ukphy.c,v 1.43 2010/06/06 18:58:22 pgoyette Exp $"); 63 64 #include "opt_mii.h" 65 66 #include <sys/param.h> 67 #include <sys/systm.h> 68 #include <sys/kernel.h> 69 #include <sys/device.h> 70 #include <sys/socket.h> 71 #include <sys/errno.h> 72 73 #include <net/if.h> 74 #include <net/if_media.h> 75 76 #include <dev/mii/mii.h> 77 #include <dev/mii/miivar.h> 78 79 static int ukphymatch(device_t, cfdata_t, void *); 80 static void ukphyattach(device_t, device_t, void *); 81 82 CFATTACH_DECL3_NEW(ukphy, sizeof(struct mii_softc), 83 ukphymatch, ukphyattach, mii_phy_detach, mii_phy_activate, NULL, NULL, 84 DVF_DETACH_SHUTDOWN); 85 86 static int ukphy_service(struct mii_softc *, struct mii_data *, int); 87 88 static const struct mii_phy_funcs ukphy_funcs = { 89 ukphy_service, ukphy_status, mii_phy_reset, 90 }; 91 92 static int 93 ukphymatch(device_t parent, cfdata_t match, void *aux) 94 { 95 96 /* 97 * We know something is here, so always match at a low priority. 98 */ 99 return (1); 100 } 101 102 static void 103 ukphyattach(device_t parent, device_t self, void *aux) 104 { 105 struct mii_softc *sc = device_private(self); 106 struct mii_attach_args *ma = aux; 107 struct mii_data *mii = ma->mii_data; 108 int oui = MII_OUI(ma->mii_id1, ma->mii_id2); 109 int model = MII_MODEL(ma->mii_id2); 110 int rev = MII_REV(ma->mii_id2); 111 const char *descr; 112 113 if ((descr = mii_get_descr(oui, model)) != NULL) 114 aprint_normal(": %s (OUI 0x%06x, model 0x%04x), rev. %d\n", 115 descr, oui, model, rev); 116 else 117 aprint_normal(": OUI 0x%06x, model 0x%04x, rev. %d\n", 118 oui, model, rev); 119 aprint_naive(": Media interface\n"); 120 121 sc->mii_dev = self; 122 sc->mii_inst = mii->mii_instance; 123 sc->mii_phy = ma->mii_phyno; 124 sc->mii_funcs = &ukphy_funcs; 125 sc->mii_pdata = mii; 126 sc->mii_flags = ma->mii_flags; 127 sc->mii_anegticks = MII_ANEGTICKS; 128 129 /* 130 * Don't do loopback on unknown PHYs. It might confuse some of them. 131 */ 132 sc->mii_flags |= MIIF_NOLOOP; 133 134 PHY_RESET(sc); 135 136 sc->mii_capabilities = 137 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 138 if (sc->mii_capabilities & BMSR_EXTSTAT) 139 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 140 aprint_normal_dev(self, ""); 141 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 142 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 143 aprint_error("no media present"); 144 else 145 mii_phy_add_media(sc); 146 aprint_normal("\n"); 147 } 148 149 static int 150 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 151 { 152 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 153 int reg; 154 155 switch (cmd) { 156 case MII_POLLSTAT: 157 /* 158 * If we're not polling our PHY instance, just return. 159 */ 160 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 161 return (0); 162 break; 163 164 case MII_MEDIACHG: 165 /* 166 * If the media indicates a different PHY instance, 167 * isolate ourselves. 168 */ 169 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 170 reg = PHY_READ(sc, MII_BMCR); 171 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 172 return (0); 173 } 174 175 /* 176 * If the interface is not up, don't do anything. 177 */ 178 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 179 break; 180 181 mii_phy_setmedia(sc); 182 break; 183 184 case MII_TICK: 185 /* 186 * If we're not currently selected, just return. 187 */ 188 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 189 return (0); 190 191 /* 192 * Only used for autonegotiation. 193 */ 194 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 195 return (0); 196 197 if (mii_phy_tick(sc) == EJUSTRETURN) 198 return (0); 199 break; 200 201 case MII_DOWN: 202 mii_phy_down(sc); 203 return (0); 204 } 205 206 /* Update the media status. */ 207 mii_phy_status(sc); 208 209 /* Callback if something changed. */ 210 mii_phy_update(sc, cmd); 211 return (0); 212 } 213