ukphy.c revision 50477
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 40/* 41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by Manuel Bouyer. 54 * 4. The name of the author may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69/* 70 * driver for generic unknown PHYs 71 */ 72 73#include <sys/param.h> 74#include <sys/systm.h> 75#include <sys/kernel.h> 76#include <sys/malloc.h> 77#include <sys/socket.h> 78#include <sys/errno.h> 79#include <sys/module.h> 80#include <sys/bus.h> 81 82#include <net/if.h> 83#include <net/if_media.h> 84 85#include <machine/clock.h> 86 87#include <dev/mii/mii.h> 88#include <dev/mii/miivar.h> 89 90#include "miibus_if.h" 91 92#if !defined(lint) 93static const char rcsid[] = 94 "$FreeBSD: head/sys/dev/mii/ukphy.c 50477 1999-08-28 01:08:13Z peter $"; 95#endif 96 97static int ukphy_probe __P((device_t)); 98static int ukphy_attach __P((device_t)); 99static int ukphy_detach __P((device_t)); 100 101static device_method_t ukphy_methods[] = { 102 /* device interface */ 103 DEVMETHOD(device_probe, ukphy_probe), 104 DEVMETHOD(device_attach, ukphy_attach), 105 DEVMETHOD(device_detach, ukphy_detach), 106 DEVMETHOD(device_shutdown, bus_generic_shutdown), 107 { 0, 0 } 108}; 109 110static devclass_t ukphy_devclass; 111 112static driver_t ukphy_driver = { 113 "ukphy", 114 ukphy_methods, 115 sizeof(struct mii_softc) 116}; 117 118DRIVER_MODULE(ukphy, miibus, ukphy_driver, ukphy_devclass, 0, 0); 119 120int ukphy_service __P((struct mii_softc *, struct mii_data *, int)); 121 122static int 123ukphy_probe(dev) 124 device_t dev; 125{ 126 127 /* 128 * We know something is here, so always match at a low priority. 129 */ 130 device_set_desc(dev, "Generic IEEE 802.3u media interface"); 131 return (-100); 132} 133 134static int 135ukphy_attach(dev) 136 device_t dev; 137{ 138 struct mii_softc *sc; 139 struct mii_attach_args *ma; 140 struct mii_data *mii; 141 142 sc = device_get_softc(dev); 143 ma = device_get_ivars(dev); 144 sc->mii_dev = device_get_parent(dev); 145 mii = device_get_softc(sc->mii_dev); 146 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 147 148 if (bootverbose) 149 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n", 150 MII_OUI(ma->mii_id1, ma->mii_id2), 151 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2)); 152 153 sc->mii_inst = mii->mii_instance; 154 sc->mii_phy = ma->mii_phyno; 155 sc->mii_service = ukphy_service; 156 sc->mii_pdata = mii; 157 158 mii->mii_instance++; 159 160 sc->mii_flags |= MIIF_NOISOLATE; 161 162#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 163 164 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 165 BMCR_ISO); 166#if 0 167 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 168 BMCR_LOOP|BMCR_S100); 169#endif 170 171 mii_phy_reset(sc); 172 173 sc->mii_capabilities = 174 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 175 device_printf(dev, " "); 176 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 177 printf("no media present"); 178 else 179 mii_add_media(mii, sc->mii_capabilities, 180 sc->mii_inst); 181 printf("\n"); 182#undef ADD 183 184 MIIBUS_MEDIAINIT(sc->mii_dev); 185 186 return(0); 187} 188 189static int ukphy_detach(dev) 190 device_t dev; 191{ 192 struct mii_softc *sc; 193 struct mii_data *mii; 194 195 sc = device_get_softc(dev); 196 mii = device_get_softc(device_get_parent(dev)); 197 sc->mii_dev = NULL; 198 LIST_REMOVE(sc, mii_list); 199 200 return(0); 201} 202 203int 204ukphy_service(sc, mii, cmd) 205 struct mii_softc *sc; 206 struct mii_data *mii; 207 int cmd; 208{ 209 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 210 int reg; 211 212 switch (cmd) { 213 case MII_POLLSTAT: 214 /* 215 * If we're not polling our PHY instance, just return. 216 */ 217 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 218 return (0); 219 break; 220 221 case MII_MEDIACHG: 222 /* 223 * If the media indicates a different PHY instance, 224 * isolate ourselves. 225 */ 226 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 227 reg = PHY_READ(sc, MII_BMCR); 228 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 229 return (0); 230 } 231 232 /* 233 * If the interface is not up, don't do anything. 234 */ 235 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 236 break; 237 238 switch (IFM_SUBTYPE(ife->ifm_media)) { 239 case IFM_AUTO: 240 /* 241 * If we're already in auto mode, just return. 242 */ 243 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 244 return (0); 245 (void) mii_phy_auto(sc, 1); 246 break; 247 case IFM_100_T4: 248 /* 249 * XXX Not supported as a manual setting right now. 250 */ 251 return (EINVAL); 252 default: 253 /* 254 * BMCR data is stored in the ifmedia entry. 255 */ 256 PHY_WRITE(sc, MII_ANAR, 257 mii_anar(ife->ifm_media)); 258 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 259 } 260 break; 261 262 case MII_TICK: 263 /* 264 * If we're not currently selected, just return. 265 */ 266 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 267 return (0); 268 269 /* 270 * Only used for autonegotiation. 271 */ 272 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 273 return (0); 274 275 /* 276 * Is the interface even up? 277 */ 278 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 279 return (0); 280 281 /* 282 * Check to see if we have link. If we do, we don't 283 * need to restart the autonegotiation process. Read 284 * the BMSR twice in case it's latched. 285 */ 286 reg = PHY_READ(sc, MII_BMSR) | 287 PHY_READ(sc, MII_BMSR); 288 if (reg & BMSR_LINK) 289 return (0); 290 291 /* 292 * Only retry autonegotiation every 5 seconds. 293 */ 294 if (++sc->mii_ticks != 5) 295 return (0); 296 297 sc->mii_ticks = 0; 298 mii_phy_reset(sc); 299 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 300 return (0); 301 break; 302 } 303 304 /* Update the media status. */ 305 ukphy_status(sc); 306 307 /* Callback if something changed. */ 308 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 309 MIIBUS_STATCHG(sc->mii_dev); 310 sc->mii_active = mii->mii_media_active; 311 } 312 return (0); 313} 314