1 /*- 2 * Copyright (c) 2008, Pyun YongHyeon <yongari@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 /* 32 * Driver for the JMicron JMP211 10/100/1000, JMP202 10/100 PHY. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/module.h> 39 #include <sys/socket.h> 40 #include <sys/bus.h> 41 42 #include <net/if.h> 43 #include <net/if_media.h> 44 45 #include <dev/mii/mii.h> 46 #include <dev/mii/miivar.h> 47 #include "miidevs.h" 48 49 #include <dev/mii/jmphyreg.h> 50 51 #include "miibus_if.h" 52 53 static int jmphy_probe(device_t); 54 static int jmphy_attach(device_t); 55 static void jmphy_reset(struct mii_softc *); 56 static uint16_t jmphy_anar(struct ifmedia_entry *); 57 static int jmphy_auto(struct mii_softc *, struct ifmedia_entry *); 58 59 struct jmphy_softc { 60 struct mii_softc mii_sc; 61 int mii_oui; 62 int mii_model; 63 int mii_rev; 64 }; 65 66 static device_method_t jmphy_methods[] = { 67 /* Device interface. */ 68 DEVMETHOD(device_probe, jmphy_probe), 69 DEVMETHOD(device_attach, jmphy_attach), 70 DEVMETHOD(device_detach, mii_phy_detach), 71 DEVMETHOD(device_shutdown, bus_generic_shutdown), 72 { NULL, NULL } 73 }; 74 75 static devclass_t jmphy_devclass; 76 static driver_t jmphy_driver = { 77 "jmphy", 78 jmphy_methods, 79 sizeof(struct jmphy_softc) 80 }; 81 82 DRIVER_MODULE(jmphy, miibus, jmphy_driver, jmphy_devclass, 0, 0); 83 84 static int jmphy_service(struct mii_softc *, struct mii_data *, int); 85 static void jmphy_status(struct mii_softc *); 86 87 static const struct mii_phydesc jmphys[] = { 88 MII_PHY_DESC(JMICRON, JMP202), 89 MII_PHY_DESC(JMICRON, JMP211), 90 MII_PHY_END 91 }; 92 93 static int 94 jmphy_probe(device_t dev) 95 { 96 97 return (mii_phy_dev_probe(dev, jmphys, BUS_PROBE_DEFAULT)); 98 } 99 100 static int 101 jmphy_attach(device_t dev) 102 { 103 struct jmphy_softc *jsc; 104 struct mii_softc *sc; 105 struct mii_attach_args *ma; 106 struct mii_data *mii; 107 108 jsc = device_get_softc(dev); 109 sc = &jsc->mii_sc; 110 ma = device_get_ivars(dev); 111 sc->mii_dev = device_get_parent(dev); 112 mii = device_get_softc(sc->mii_dev); 113 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 114 115 sc->mii_inst = mii->mii_instance; 116 sc->mii_phy = ma->mii_phyno; 117 sc->mii_service = jmphy_service; 118 sc->mii_pdata = mii; 119 120 mii->mii_instance++; 121 122 jsc->mii_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 123 jsc->mii_model = MII_MODEL(ma->mii_id2); 124 jsc->mii_rev = MII_REV(ma->mii_id2); 125 if (bootverbose) 126 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n", 127 jsc->mii_oui, jsc->mii_model, jsc->mii_rev); 128 129 jmphy_reset(sc); 130 131 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 132 if (sc->mii_capabilities & BMSR_EXTSTAT) 133 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 134 device_printf(dev, " "); 135 mii_phy_add_media(sc); 136 printf("\n"); 137 138 MIIBUS_MEDIAINIT(sc->mii_dev); 139 return(0); 140 } 141 142 static int 143 jmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 144 { 145 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 146 uint16_t bmcr; 147 148 switch (cmd) { 149 case MII_POLLSTAT: 150 /* 151 * If we're not polling our PHY instance, just return. 152 */ 153 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 154 return (0); 155 break; 156 157 case MII_MEDIACHG: 158 /* 159 * If the media indicates a different PHY instance, 160 * isolate ourselves. 161 */ 162 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 163 bmcr = PHY_READ(sc, MII_BMCR); 164 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO); 165 return (0); 166 } 167 168 /* 169 * If the interface is not up, don't do anything. 170 */ 171 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 172 break; 173 174 if (jmphy_auto(sc, ife) != EJUSTRETURN) 175 return (EINVAL); 176 break; 177 178 case MII_TICK: 179 /* 180 * If we're not currently selected, just return. 181 */ 182 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 183 return (0); 184 185 /* 186 * Is the interface even up? 187 */ 188 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 189 return (0); 190 191 /* 192 * Only used for autonegotiation. 193 */ 194 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { 195 sc->mii_ticks = 0; 196 break; 197 } 198 199 /* Check for link. */ 200 if ((PHY_READ(sc, JMPHY_SSR) & JMPHY_SSR_LINK_UP) != 0) { 201 sc->mii_ticks = 0; 202 break; 203 } 204 205 /* Announce link loss right after it happens. */ 206 if (sc->mii_ticks++ == 0) 207 break; 208 if (sc->mii_ticks <= sc->mii_anegticks) 209 return (0); 210 211 sc->mii_ticks = 0; 212 jmphy_auto(sc, ife); 213 break; 214 } 215 216 /* Update the media status. */ 217 jmphy_status(sc); 218 219 /* Callback if something changed. */ 220 mii_phy_update(sc, cmd); 221 return (0); 222 } 223 224 static void 225 jmphy_status(struct mii_softc *sc) 226 { 227 struct mii_data *mii = sc->mii_pdata; 228 int bmcr, ssr; 229 230 mii->mii_media_status = IFM_AVALID; 231 mii->mii_media_active = IFM_ETHER; 232 233 ssr = PHY_READ(sc, JMPHY_SSR); 234 if ((ssr & JMPHY_SSR_LINK_UP) != 0) 235 mii->mii_media_status |= IFM_ACTIVE; 236 237 bmcr = PHY_READ(sc, MII_BMCR); 238 if ((bmcr & BMCR_ISO) != 0) { 239 mii->mii_media_active |= IFM_NONE; 240 mii->mii_media_status = 0; 241 return; 242 } 243 244 if ((bmcr & BMCR_LOOP) != 0) 245 mii->mii_media_active |= IFM_LOOP; 246 247 if ((ssr & JMPHY_SSR_SPD_DPLX_RESOLVED) == 0) { 248 /* Erg, still trying, I guess... */ 249 mii->mii_media_active |= IFM_NONE; 250 return; 251 } 252 253 switch ((ssr & JMPHY_SSR_SPEED_MASK)) { 254 case JMPHY_SSR_SPEED_1000: 255 mii->mii_media_active |= IFM_1000_T; 256 /* 257 * jmphy(4) got a valid link so reset mii_ticks. 258 * Resetting mii_ticks is needed in order to 259 * detect link loss after auto-negotiation. 260 */ 261 sc->mii_ticks = 0; 262 break; 263 case JMPHY_SSR_SPEED_100: 264 mii->mii_media_active |= IFM_100_TX; 265 sc->mii_ticks = 0; 266 break; 267 case JMPHY_SSR_SPEED_10: 268 mii->mii_media_active |= IFM_10_T; 269 sc->mii_ticks = 0; 270 break; 271 default: 272 mii->mii_media_active |= IFM_NONE; 273 return; 274 } 275 276 if ((ssr & JMPHY_SSR_DUPLEX) != 0) 277 mii->mii_media_active |= IFM_FDX; 278 else 279 mii->mii_media_active |= IFM_HDX; 280 /* XXX Flow-control. */ 281 #ifdef notyet 282 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) { 283 if ((PHY_READ(sc, MII_100T2SR) & GTSR_MS_RES) != 0) 284 mii->mii_media_active |= IFM_ETH_MASTER; 285 } 286 #endif 287 } 288 289 static void 290 jmphy_reset(struct mii_softc *sc) 291 { 292 struct jmphy_softc *jsc; 293 int i; 294 295 jsc = (struct jmphy_softc *)sc; 296 297 /* Disable sleep mode. */ 298 PHY_WRITE(sc, JMPHY_TMCTL, 299 PHY_READ(sc, JMPHY_TMCTL) & ~JMPHY_TMCTL_SLEEP_ENB); 300 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN); 301 302 for (i = 0; i < 1000; i++) { 303 DELAY(1); 304 if ((PHY_READ(sc, MII_BMCR) & BMCR_RESET) == 0) 305 break; 306 } 307 } 308 309 static uint16_t 310 jmphy_anar(struct ifmedia_entry *ife) 311 { 312 uint16_t anar; 313 314 anar = 0; 315 switch (IFM_SUBTYPE(ife->ifm_media)) { 316 case IFM_AUTO: 317 anar |= ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10; 318 break; 319 case IFM_1000_T: 320 break; 321 case IFM_100_TX: 322 anar |= ANAR_TX | ANAR_TX_FD; 323 break; 324 case IFM_10_T: 325 anar |= ANAR_10 | ANAR_10_FD; 326 break; 327 default: 328 break; 329 } 330 331 return (anar); 332 } 333 334 static int 335 jmphy_auto(struct mii_softc *sc, struct ifmedia_entry *ife) 336 { 337 uint16_t anar, bmcr, gig; 338 339 gig = 0; 340 bmcr = PHY_READ(sc, MII_BMCR); 341 switch (IFM_SUBTYPE(ife->ifm_media)) { 342 case IFM_AUTO: 343 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; 344 break; 345 case IFM_1000_T: 346 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; 347 break; 348 case IFM_100_TX: 349 case IFM_10_T: 350 break; 351 case IFM_NONE: 352 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO | BMCR_PDOWN); 353 return (EJUSTRETURN); 354 default: 355 return (EINVAL); 356 } 357 358 if ((ife->ifm_media & IFM_LOOP) != 0) 359 bmcr |= BMCR_LOOP; 360 361 anar = jmphy_anar(ife); 362 /* XXX Always advertise pause capability. */ 363 anar |= (3 << 10); 364 365 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) { 366 #ifdef notyet 367 struct mii_data *mii; 368 369 mii = sc->mii_pdata; 370 if ((mii->mii_media.ifm_media & IFM_ETH_MASTER) != 0) 371 gig |= GTCR_MAN_MS | GTCR_MAN_ADV; 372 #endif 373 PHY_WRITE(sc, MII_100T2CR, gig); 374 } 375 PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA); 376 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_AUTOEN | BMCR_STARTNEG); 377 378 return (EJUSTRETURN); 379 } 380