acphy.c revision 84145
1/*- 2 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 7 * NASA Ames Research Center. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the NetBSD 20 * Foundation, Inc. and its contributors. 21 * 4. Neither the name of The NetBSD Foundation nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/* 39 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by Manuel Bouyer. 52 * 4. The name of the author may not be used to endorse or promote products 53 * derived from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 56 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 57 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 58 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 59 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 60 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 64 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 65 */ 66 67/* 68 * Driver for Altima AC101 10/100 PHY 69 */ 70 71#include <sys/param.h> 72#include <sys/systm.h> 73#include <sys/kernel.h> 74#include <sys/socket.h> 75#include <sys/errno.h> 76#include <sys/module.h> 77#include <sys/bus.h> 78 79#include <net/if.h> 80#include <net/if_media.h> 81 82#include <dev/mii/mii.h> 83#include <dev/mii/miivar.h> 84#include <dev/mii/miidevs.h> 85 86#include <dev/mii/acphyreg.h> 87 88#include "miibus_if.h" 89 90#if !defined(lint) 91static const char rcsid[] = 92 "$FreeBSD: head/sys/dev/mii/acphy.c 84145 2001-09-29 19:18:52Z jlemon $"; 93#endif 94 95static int acphy_probe __P((device_t)); 96static int acphy_attach __P((device_t)); 97static int acphy_detach __P((device_t)); 98 99static device_method_t acphy_methods[] = { 100 /* device interface */ 101 DEVMETHOD(device_probe, acphy_probe), 102 DEVMETHOD(device_attach, acphy_attach), 103 DEVMETHOD(device_detach, acphy_detach), 104 DEVMETHOD(device_shutdown, bus_generic_shutdown), 105 { 0, 0 } 106}; 107 108static devclass_t acphy_devclass; 109 110static driver_t acphy_driver = { 111 "acphy", 112 acphy_methods, 113 sizeof(struct mii_softc) 114}; 115 116DRIVER_MODULE(acphy, miibus, acphy_driver, acphy_devclass, 0, 0); 117 118static int acphy_service __P((struct mii_softc *, struct mii_data *, int)); 119static void acphy_reset __P((struct mii_softc *)); 120static void acphy_status __P((struct mii_softc *)); 121 122static int acphy_probe(dev) 123 device_t dev; 124{ 125 struct mii_attach_args *ma; 126 127 ma = device_get_ivars(dev); 128 129 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxALTIMA && 130 MII_MODEL(ma->mii_id2) == MII_MODEL_xxALTIMA_AC101) { 131 device_set_desc(dev, MII_STR_xxALTIMA_AC101); 132 } else 133 return (ENXIO); 134 135 return (0); 136} 137 138static int acphy_attach(dev) 139 device_t dev; 140{ 141 struct mii_softc *sc; 142 struct mii_attach_args *ma; 143 struct mii_data *mii; 144 145 sc = device_get_softc(dev); 146 ma = device_get_ivars(dev); 147 sc->mii_dev = device_get_parent(dev); 148 mii = device_get_softc(sc->mii_dev); 149 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 150 151 sc->mii_inst = mii->mii_instance; 152 sc->mii_phy = ma->mii_phyno; 153 sc->mii_service = acphy_service; 154 sc->mii_pdata = mii; 155 sc->mii_flags |= MIIF_NOISOLATE; 156 157 acphy_reset(sc); 158 159 mii->mii_instance++; 160 161 sc->mii_capabilities = 162 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 163 device_printf(dev, " "); 164 if (sc->mii_capabilities & BMSR_MEDIAMASK) 165 mii_add_media(mii, sc->mii_capabilities, 166 sc->mii_inst); 167 printf("\n"); 168 169 MIIBUS_MEDIAINIT(sc->mii_dev); 170 return (0); 171} 172 173static int acphy_detach(dev) 174 device_t dev; 175{ 176 struct mii_softc *sc; 177 struct mii_data *mii; 178 179 sc = device_get_softc(dev); 180 mii = device_get_softc(device_get_parent(dev)); 181 sc->mii_dev = NULL; 182 LIST_REMOVE(sc, mii_list); 183 184 return(0); 185} 186 187static int 188acphy_service(sc, mii, cmd) 189 struct mii_softc *sc; 190 struct mii_data *mii; 191 int cmd; 192{ 193 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 194 int reg; 195 196 switch (cmd) { 197 case MII_POLLSTAT: 198 /* 199 * If we're not polling our PHY instance, just return. 200 */ 201 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 202 return (0); 203 break; 204 205 case MII_MEDIACHG: 206 /* 207 * If the media indicates a different PHY instance, 208 * isolate ourselves. 209 */ 210 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 211 reg = PHY_READ(sc, MII_BMCR); 212 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO | BMCR_PDOWN); 213 return (0); 214 } 215 216 /* 217 * If the interface is not up, don't do anything. 218 */ 219 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 220 break; 221 222 /* Wake & deisolate up is needed */ 223 reg = PHY_READ(sc, MII_BMCR); 224 if (reg & (BMCR_ISO | BMCR_PDOWN)) 225 PHY_WRITE(sc, MII_BMCR, reg & ~(BMCR_ISO | BMCR_PDOWN)); 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); 234 235 (void) mii_phy_auto(sc, 1); 236 break; 237 238 default: 239 /* 240 * BMCR data is stored in the ifmedia entry. 241 */ 242 PHY_WRITE(sc, MII_ANAR, 243 mii_anar(ife->ifm_media)); 244 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 245 } 246 break; 247 248 case MII_TICK: 249 /* 250 * If we're not currently selected, just return. 251 */ 252 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 253 return (0); 254 255 /* 256 * Is the interface even up? 257 */ 258 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 259 return (0); 260 261 /* 262 * Only used for autonegotiation. 263 */ 264 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 265 break; 266 267 /* 268 * check for link. 269 * Read the status register twice; BMSR_LINK is latch-low. 270 */ 271 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 272 if (reg & BMSR_LINK) 273 break; 274 275 /* 276 * Only retry autonegotiation every 5 seconds. 277 */ 278 if (++sc->mii_ticks != 5) 279 return (0); 280 281 sc->mii_ticks = 0; 282 acphy_reset(sc); 283 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 284 return (0); 285 break; 286 } 287 288 /* Update the media status. */ 289 acphy_status(sc); 290 291 /* Callback if something changed. */ 292 mii_phy_update(sc, cmd); 293 return (0); 294} 295 296static void 297acphy_status(sc) 298 struct mii_softc *sc; 299{ 300 struct mii_data *mii = sc->mii_pdata; 301 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 302 int bmsr, bmcr, diag; 303 304 mii->mii_media_status = IFM_AVALID; 305 mii->mii_media_active = IFM_ETHER; 306 307 bmsr = PHY_READ(sc, MII_BMSR) | 308 PHY_READ(sc, MII_BMSR); 309 if (bmsr & BMSR_LINK) 310 mii->mii_media_status |= IFM_ACTIVE; 311 312 bmcr = PHY_READ(sc, MII_BMCR); 313 if (bmcr & BMCR_ISO) { 314 mii->mii_media_active |= IFM_NONE; 315 mii->mii_media_status = 0; 316 return; 317 } 318 319 if (bmcr & BMCR_LOOP) 320 mii->mii_media_active |= IFM_LOOP; 321 322 if (bmcr & BMCR_AUTOEN) { 323 if ((bmsr & BMSR_ACOMP) == 0) { 324 /* Erg, still trying, I guess... */ 325 mii->mii_media_active |= IFM_NONE; 326 return; 327 } 328 diag = PHY_READ(sc, MII_ACPHY_DIAG) | 329 PHY_READ(sc, MII_ACPHY_DIAG); 330 if (diag & AC_DIAG_SPEED) 331 mii->mii_media_active |= IFM_100_TX; 332 else 333 mii->mii_media_active |= IFM_10_T; 334 335 if (diag & AC_DIAG_DUPLEX) 336 mii->mii_media_active |= IFM_FDX; 337 } else 338 mii->mii_media_active = ife->ifm_media; 339} 340 341static void 342acphy_reset(sc) 343 struct mii_softc *sc; 344{ 345 346 mii_phy_reset(sc); 347 PHY_WRITE(sc, MII_ACPHY_INT, 0); 348} 349