1 /* $NetBSD: ukphy.c,v 1.2 1999/04/23 04:24:32 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 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 * $DragonFly: src/sys/dev/netif/mii_layer/ukphy.c,v 1.9 2005/10/31 13:08:35 sephe Exp $ 41 */ 42 43 /* 44 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by Manuel Bouyer. 57 * 4. The name of the author may not be used to endorse or promote products 58 * derived from this software without specific prior written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 61 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 63 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 64 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 65 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 66 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 67 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 68 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 69 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 70 */ 71 72 /* 73 * driver for generic unknown PHYs 74 */ 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/kernel.h> 79 #include <sys/socket.h> 80 #include <sys/errno.h> 81 #include <sys/module.h> 82 #include <sys/bus.h> 83 84 #include <net/if.h> 85 #include <net/if_media.h> 86 87 #include <machine/clock.h> 88 89 #include "mii.h" 90 #include "miivar.h" 91 92 #include "miibus_if.h" 93 94 static int ukphy_service(struct mii_softc *, struct mii_data *, int); 95 static int ukphy_probe(device_t); 96 97 static device_method_t ukphy_methods[] = { 98 /* device interface */ 99 DEVMETHOD(device_probe, ukphy_probe), 100 DEVMETHOD(device_attach, ukphy_attach), 101 DEVMETHOD(device_detach, ukphy_detach), 102 DEVMETHOD(device_shutdown, bus_generic_shutdown), 103 { 0, 0 } 104 }; 105 106 static devclass_t ukphy_devclass; 107 108 static driver_t ukphy_driver = { 109 "ukphy", 110 ukphy_methods, 111 sizeof(struct mii_softc) 112 }; 113 114 DRIVER_MODULE(ukphy, miibus, ukphy_driver, ukphy_devclass, 0, 0); 115 116 static int 117 ukphy_probe(device_t dev) 118 { 119 120 /* 121 * We know something is here, so always match at a low priority. 122 */ 123 device_set_desc(dev, "Generic IEEE 802.3u media interface"); 124 return (-100); 125 } 126 127 int 128 ukphy_attach(device_t dev) 129 { 130 struct mii_softc *sc; 131 struct mii_attach_args *ma; 132 struct mii_data *mii; 133 134 sc = device_get_softc(dev); 135 ma = device_get_ivars(dev); 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 sc->mii_inst = mii->mii_instance; 147 sc->mii_service = ukphy_service; 148 sc->mii_pdata = mii; 149 150 mii->mii_instance++; 151 152 sc->mii_flags |= MIIF_NOISOLATE; 153 154 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 155 156 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 157 BMCR_ISO); 158 #if 0 159 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 160 BMCR_LOOP|BMCR_S100); 161 #endif 162 163 mii_phy_reset(sc); 164 165 sc->mii_capabilities = 166 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 167 device_printf(dev, " "); 168 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 169 printf("no media present"); 170 else 171 mii_add_media(sc, sc->mii_capabilities); 172 printf("\n"); 173 #undef ADD 174 175 MIIBUS_MEDIAINIT(sc->mii_dev); 176 177 return(0); 178 } 179 180 int 181 ukphy_detach(device_t dev) 182 { 183 struct mii_softc *sc; 184 struct mii_data *mii; 185 186 sc = device_get_softc(dev); 187 mii = device_get_softc(device_get_parent(dev)); 188 mii_phy_auto_stop(sc); 189 sc->mii_dev = NULL; 190 LIST_REMOVE(sc, mii_list); 191 192 return(0); 193 } 194 195 static int 196 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 197 { 198 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 199 int reg; 200 201 switch (cmd) { 202 case MII_POLLSTAT: 203 /* 204 * If we're not polling our PHY instance, just return. 205 */ 206 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 207 return (0); 208 break; 209 210 case MII_MEDIACHG: 211 /* 212 * If the media indicates a different PHY instance, 213 * isolate ourselves. 214 */ 215 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 216 reg = PHY_READ(sc, MII_BMCR); 217 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 218 return (0); 219 } 220 221 /* 222 * If the interface is not up, don't do anything. 223 */ 224 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 225 break; 226 227 switch (IFM_SUBTYPE(ife->ifm_media)) { 228 case IFM_AUTO: 229 /* 230 * If we're already in auto mode, just return. 231 */ 232 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 233 return (0); 234 (void) mii_phy_auto(sc, 1); 235 break; 236 case IFM_100_T4: 237 /* 238 * XXX Not supported as a manual setting right now. 239 */ 240 return (EINVAL); 241 default: 242 /* 243 * BMCR data is stored in the ifmedia entry. 244 */ 245 PHY_WRITE(sc, MII_ANAR, 246 mii_anar(ife->ifm_media)); 247 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 248 } 249 break; 250 251 case MII_TICK: 252 /* 253 * If we're not currently selected, just return. 254 */ 255 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 256 return (0); 257 258 /* 259 * Only used for autonegotiation. 260 */ 261 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 262 return (0); 263 264 /* 265 * Is the interface even up? 266 */ 267 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 268 return (0); 269 270 /* 271 * Check to see if we have link. If we do, we don't 272 * need to restart the autonegotiation process. Read 273 * the BMSR twice in case it's latched. 274 */ 275 reg = PHY_READ(sc, MII_BMSR) | 276 PHY_READ(sc, MII_BMSR); 277 if (reg & BMSR_LINK) 278 return (0); 279 280 /* 281 * Only retry autonegotiation every 5 seconds. 282 */ 283 if (++sc->mii_ticks != 5) 284 return (0); 285 286 sc->mii_ticks = 0; 287 mii_phy_reset(sc); 288 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 289 return (0); 290 break; 291 } 292 293 /* Update the media status. */ 294 ukphy_status(sc); 295 296 /* Callback if something changed. */ 297 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 298 MIIBUS_STATCHG(sc->mii_dev); 299 sc->mii_active = mii->mii_media_active; 300 } 301 return (0); 302 } 303