1 /* $NetBSD: ukphy.c,v 1.27 2006/03/29 07:05:24 thorpej 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 * 39 * $FreeBSD: src/sys/dev/mii/ukphy.c,v 1.2.2.2 2002/11/08 21:53:49 semenu Exp $ 40 */ 41 42 /* 43 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed by Manuel Bouyer. 56 * 4. The name of the author may not be used to endorse or promote products 57 * derived from this software without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 60 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 61 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 62 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 63 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 64 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 65 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 66 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 67 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 68 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 69 */ 70 71 /* 72 * driver for generic unknown PHYs 73 */ 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/socket.h> 79 #include <sys/errno.h> 80 #include <sys/module.h> 81 #include <sys/bus.h> 82 83 #include <net/if.h> 84 #include <net/if_media.h> 85 86 #include <machine/clock.h> 87 88 #include "mii.h" 89 #include "miivar.h" 90 91 #include "miibus_if.h" 92 93 static int ukphy_service(struct mii_softc *, struct mii_data *, int); 94 static int ukphy_probe(device_t); 95 96 static device_method_t ukphy_methods[] = { 97 /* device interface */ 98 DEVMETHOD(device_probe, ukphy_probe), 99 DEVMETHOD(device_attach, ukphy_attach), 100 DEVMETHOD(device_detach, ukphy_detach), 101 DEVMETHOD(device_shutdown, bus_generic_shutdown), 102 DEVMETHOD_END 103 }; 104 105 static devclass_t ukphy_devclass; 106 107 static driver_t ukphy_driver = { 108 "ukphy", 109 ukphy_methods, 110 sizeof(struct mii_softc) 111 }; 112 113 DRIVER_MODULE(ukphy, miibus, ukphy_driver, ukphy_devclass, NULL, NULL); 114 115 static int 116 ukphy_probe(device_t dev) 117 { 118 119 /* 120 * We know something is here, so always match at a low priority. 121 */ 122 device_set_desc(dev, "Generic IEEE 802.3u media interface"); 123 return (-100); 124 } 125 126 int 127 ukphy_attach(device_t dev) 128 { 129 struct mii_softc *sc; 130 struct mii_attach_args *ma; 131 struct mii_data *mii; 132 133 sc = device_get_softc(dev); 134 ma = device_get_ivars(dev); 135 136 mii_softc_init(sc, ma); 137 sc->mii_dev = device_get_parent(dev); 138 mii = device_get_softc(sc->mii_dev); 139 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 140 141 if (bootverbose) { 142 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n", 143 MII_OUI(ma->mii_id1, ma->mii_id2), 144 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2)); 145 } 146 147 sc->mii_inst = mii->mii_instance; 148 sc->mii_service = ukphy_service; 149 sc->mii_pdata = mii; 150 151 mii->mii_instance++; 152 153 /* 154 * Don't do loopback on unknown PHYs. It might confuse some of them. 155 */ 156 sc->mii_flags |= MIIF_NOLOOP; 157 158 mii_phy_reset(sc); 159 160 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 161 if (sc->mii_capabilities & BMSR_EXTSTAT) 162 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 163 164 device_printf(dev, " "); 165 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 166 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 167 kprintf("no media present"); 168 else 169 mii_phy_add_media(sc); 170 kprintf("\n"); 171 172 MIIBUS_MEDIAINIT(sc->mii_dev); 173 return(0); 174 } 175 176 int 177 ukphy_detach(device_t dev) 178 { 179 struct mii_softc *sc; 180 181 sc = device_get_softc(dev); 182 sc->mii_dev = NULL; 183 LIST_REMOVE(sc, mii_list); 184 185 return(0); 186 } 187 188 static int 189 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 190 { 191 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 192 int reg; 193 194 switch (cmd) { 195 case MII_POLLSTAT: 196 /* 197 * If we're not polling our PHY instance, just return. 198 */ 199 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 200 return (0); 201 break; 202 203 case MII_MEDIACHG: 204 /* 205 * If the media indicates a different PHY instance, 206 * isolate ourselves. 207 */ 208 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 209 reg = PHY_READ(sc, MII_BMCR); 210 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 211 return (0); 212 } 213 214 /* 215 * If the interface is not up, don't do anything. 216 */ 217 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 218 break; 219 220 mii_phy_set_media(sc); 221 break; 222 223 case MII_TICK: 224 /* 225 * If we're not currently selected, just return. 226 */ 227 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 228 return (0); 229 230 if (mii_phy_tick(sc) == EJUSTRETURN) 231 return (0); 232 break; 233 } 234 235 /* Update the media status. */ 236 ukphy_status(sc); 237 238 /* Callback if something changed. */ 239 mii_phy_update(sc, cmd); 240 return (0); 241 } 242