1 /*- 2 * Copyright (c) 2006, 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 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 /* 33 * Driver for the IC Plus IP1000A/IP1001 10/100/1000 PHY. 34 */ 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/module.h> 40 #include <sys/socket.h> 41 #include <sys/bus.h> 42 43 #include <net/if.h> 44 #include <net/if_media.h> 45 46 #include <dev/mii/mii.h> 47 #include <dev/mii/miivar.h> 48 #include "miidevs.h" 49 50 #include <dev/mii/ip1000phyreg.h> 51 52 #include "miibus_if.h" 53 54 #include <machine/bus.h> 55 #include <dev/stge/if_stgereg.h> 56 57 static int ip1000phy_probe(device_t); 58 static int ip1000phy_attach(device_t); 59 60 struct ip1000phy_softc { 61 struct mii_softc mii_sc; 62 int model; 63 int revision; 64 }; 65 66 static device_method_t ip1000phy_methods[] = { 67 /* device interface */ 68 DEVMETHOD(device_probe, ip1000phy_probe), 69 DEVMETHOD(device_attach, ip1000phy_attach), 70 DEVMETHOD(device_detach, mii_phy_detach), 71 DEVMETHOD(device_shutdown, bus_generic_shutdown), 72 { 0, 0 } 73 }; 74 75 static devclass_t ip1000phy_devclass; 76 static driver_t ip1000phy_driver = { 77 "ip1000phy", 78 ip1000phy_methods, 79 sizeof (struct mii_softc) 80 }; 81 82 DRIVER_MODULE(ip1000phy, miibus, ip1000phy_driver, ip1000phy_devclass, 0, 0); 83 84 static int ip1000phy_service(struct mii_softc *, struct mii_data *, int); 85 static void ip1000phy_status(struct mii_softc *); 86 static void ip1000phy_reset(struct mii_softc *); 87 static int ip1000phy_mii_phy_auto(struct mii_softc *); 88 89 static const struct mii_phydesc ip1000phys[] = { 90 MII_PHY_DESC(ICPLUS, IP1000A), 91 MII_PHY_DESC(ICPLUS, IP1001), 92 MII_PHY_END 93 }; 94 95 static int 96 ip1000phy_probe(device_t dev) 97 { 98 99 return (mii_phy_dev_probe(dev, ip1000phys, BUS_PROBE_DEFAULT)); 100 } 101 102 static int 103 ip1000phy_attach(device_t dev) 104 { 105 struct ip1000phy_softc *isc; 106 struct mii_softc *sc; 107 struct mii_attach_args *ma; 108 struct mii_data *mii; 109 110 isc = device_get_softc(dev); 111 sc = &isc->mii_sc; 112 ma = device_get_ivars(dev); 113 sc->mii_dev = device_get_parent(dev); 114 mii = device_get_softc(sc->mii_dev); 115 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 116 117 sc->mii_inst = mii->mii_instance; 118 sc->mii_phy = ma->mii_phyno; 119 sc->mii_service = ip1000phy_service; 120 sc->mii_pdata = mii; 121 sc->mii_flags |= MIIF_NOISOLATE; 122 123 mii->mii_instance++; 124 125 isc->model = MII_MODEL(ma->mii_id2); 126 isc->revision = MII_REV(ma->mii_id2); 127 128 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 129 if (sc->mii_capabilities & BMSR_EXTSTAT) 130 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 131 device_printf(dev, " "); 132 133 ip1000phy_reset(sc); 134 mii_phy_add_media(sc); 135 printf("\n"); 136 137 MIIBUS_MEDIAINIT(sc->mii_dev); 138 return(0); 139 } 140 141 static int 142 ip1000phy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 143 { 144 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 145 uint32_t gig, reg, speed; 146 147 switch (cmd) { 148 case MII_POLLSTAT: 149 /* 150 * If we're not polling our PHY instance, just return. 151 */ 152 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 153 return (0); 154 break; 155 156 case MII_MEDIACHG: 157 /* 158 * If the media indicates a different PHY instance, 159 * isolate ourselves. 160 */ 161 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 162 reg = PHY_READ(sc, IP1000PHY_MII_BMCR); 163 PHY_WRITE(sc, IP1000PHY_MII_BMCR, 164 reg | IP1000PHY_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 } 174 175 ip1000phy_reset(sc); 176 switch (IFM_SUBTYPE(ife->ifm_media)) { 177 case IFM_AUTO: 178 (void)ip1000phy_mii_phy_auto(sc); 179 goto done; 180 break; 181 182 case IFM_1000_T: 183 /* 184 * XXX 185 * Manual 1000baseT setting doesn't seem to work. 186 */ 187 speed = IP1000PHY_BMCR_1000; 188 break; 189 190 case IFM_100_TX: 191 speed = IP1000PHY_BMCR_100; 192 break; 193 194 case IFM_10_T: 195 speed = IP1000PHY_BMCR_10; 196 break; 197 198 default: 199 return (EINVAL); 200 } 201 202 if (((ife->ifm_media & IFM_GMASK) & IFM_FDX) != 0) { 203 speed |= IP1000PHY_BMCR_FDX; 204 gig = IP1000PHY_1000CR_1000T_FDX; 205 } else 206 gig = IP1000PHY_1000CR_1000T; 207 208 PHY_WRITE(sc, IP1000PHY_MII_1000CR, 0); 209 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed); 210 211 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) 212 break; 213 214 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig); 215 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed); 216 217 /* 218 * When setting the link manually, one side must 219 * be the master and the other the slave. However 220 * ifmedia doesn't give us a good way to specify 221 * this, so we fake it by using one of the LINK 222 * flags. If LINK0 is set, we program the PHY to 223 * be a master, otherwise it's a slave. 224 */ 225 if ((mii->mii_ifp->if_flags & IFF_LINK0)) 226 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig | 227 IP1000PHY_1000CR_MASTER | 228 IP1000PHY_1000CR_MMASTER | 229 IP1000PHY_1000CR_MANUAL); 230 else 231 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig | 232 IP1000PHY_1000CR_MASTER | 233 IP1000PHY_1000CR_MANUAL); 234 235 done: 236 break; 237 238 case MII_TICK: 239 /* 240 * If we're not currently selected, just return. 241 */ 242 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 243 return (0); 244 /* 245 * Is the interface even up? 246 */ 247 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 248 return (0); 249 250 /* 251 * Only used for autonegotiation. 252 */ 253 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { 254 sc->mii_ticks = 0; 255 break; 256 } 257 258 /* 259 * check for link. 260 */ 261 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 262 if (reg & BMSR_LINK) { 263 sc->mii_ticks = 0; 264 break; 265 } 266 267 /* Announce link loss right after it happens */ 268 if (sc->mii_ticks++ == 0) 269 break; 270 271 /* 272 * Only retry autonegotiation every mii_anegticks seconds. 273 */ 274 if (sc->mii_ticks <= sc->mii_anegticks) 275 break; 276 277 sc->mii_ticks = 0; 278 ip1000phy_mii_phy_auto(sc); 279 break; 280 } 281 282 /* Update the media status. */ 283 ip1000phy_status(sc); 284 285 /* Callback if something changed. */ 286 mii_phy_update(sc, cmd); 287 return (0); 288 } 289 290 static void 291 ip1000phy_status(struct mii_softc *sc) 292 { 293 struct ip1000phy_softc *isc; 294 struct mii_data *mii = sc->mii_pdata; 295 uint32_t bmsr, bmcr, stat; 296 uint32_t ar, lpar; 297 298 isc = (struct ip1000phy_softc *)sc; 299 300 mii->mii_media_status = IFM_AVALID; 301 mii->mii_media_active = IFM_ETHER; 302 303 bmsr = PHY_READ(sc, IP1000PHY_MII_BMSR) | 304 PHY_READ(sc, IP1000PHY_MII_BMSR); 305 if ((bmsr & IP1000PHY_BMSR_LINK) != 0) 306 mii->mii_media_status |= IFM_ACTIVE; 307 308 bmcr = PHY_READ(sc, IP1000PHY_MII_BMCR); 309 if ((bmcr & IP1000PHY_BMCR_LOOP) != 0) 310 mii->mii_media_active |= IFM_LOOP; 311 312 if ((bmcr & IP1000PHY_BMCR_AUTOEN) != 0) { 313 if ((bmsr & IP1000PHY_BMSR_ANEGCOMP) == 0) { 314 /* Erg, still trying, I guess... */ 315 mii->mii_media_active |= IFM_NONE; 316 return; 317 } 318 } 319 320 if (isc->model == MII_MODEL_ICPLUS_IP1001) { 321 stat = PHY_READ(sc, IP1000PHY_LSR); 322 switch (stat & IP1000PHY_LSR_SPEED_MASK) { 323 case IP1000PHY_LSR_SPEED_10: 324 mii->mii_media_active |= IFM_10_T; 325 break; 326 case IP1000PHY_LSR_SPEED_100: 327 mii->mii_media_active |= IFM_100_TX; 328 break; 329 case IP1000PHY_LSR_SPEED_1000: 330 mii->mii_media_active |= IFM_1000_T; 331 break; 332 default: 333 mii->mii_media_active |= IFM_NONE; 334 return; 335 } 336 if ((stat & IP1000PHY_LSR_FULL_DUPLEX) != 0) 337 mii->mii_media_active |= IFM_FDX; 338 else 339 mii->mii_media_active |= IFM_HDX; 340 } else { 341 stat = PHY_READ(sc, STGE_PhyCtrl); 342 switch (PC_LinkSpeed(stat)) { 343 case PC_LinkSpeed_Down: 344 mii->mii_media_active |= IFM_NONE; 345 return; 346 case PC_LinkSpeed_10: 347 mii->mii_media_active |= IFM_10_T; 348 break; 349 case PC_LinkSpeed_100: 350 mii->mii_media_active |= IFM_100_TX; 351 break; 352 case PC_LinkSpeed_1000: 353 mii->mii_media_active |= IFM_1000_T; 354 break; 355 default: 356 mii->mii_media_active |= IFM_NONE; 357 return; 358 } 359 if ((stat & PC_PhyDuplexStatus) != 0) 360 mii->mii_media_active |= IFM_FDX; 361 else 362 mii->mii_media_active |= IFM_HDX; 363 } 364 365 ar = PHY_READ(sc, IP1000PHY_MII_ANAR); 366 lpar = PHY_READ(sc, IP1000PHY_MII_ANLPAR); 367 368 /* 369 * FLAG0 : Rx flow-control 370 * FLAG1 : Tx flow-control 371 */ 372 if ((ar & IP1000PHY_ANAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_PAUSE)) 373 mii->mii_media_active |= IFM_FLAG0 | IFM_FLAG1; 374 else if (!(ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) && 375 (lpar & IP1000PHY_ANLPAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_APAUSE)) 376 mii->mii_media_active |= IFM_FLAG1; 377 else if ((ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) && 378 !(lpar & IP1000PHY_ANLPAR_PAUSE) && 379 (lpar & IP1000PHY_ANLPAR_APAUSE)) { 380 mii->mii_media_active |= IFM_FLAG0; 381 } 382 383 /* 384 * FLAG2 : local PHY resolved to MASTER 385 */ 386 if ((mii->mii_media_active & IFM_1000_T) != 0) { 387 stat = PHY_READ(sc, IP1000PHY_MII_1000SR); 388 if ((stat & IP1000PHY_1000SR_MASTER) != 0) 389 mii->mii_media_active |= IFM_FLAG2; 390 } 391 } 392 393 static int 394 ip1000phy_mii_phy_auto(struct mii_softc *mii) 395 { 396 uint32_t reg; 397 398 PHY_WRITE(mii, IP1000PHY_MII_ANAR, 399 IP1000PHY_ANAR_10T | IP1000PHY_ANAR_10T_FDX | 400 IP1000PHY_ANAR_100TX | IP1000PHY_ANAR_100TX_FDX | 401 IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE); 402 reg = IP1000PHY_1000CR_1000T | IP1000PHY_1000CR_1000T_FDX; 403 reg |= IP1000PHY_1000CR_MASTER; 404 PHY_WRITE(mii, IP1000PHY_MII_1000CR, reg); 405 PHY_WRITE(mii, IP1000PHY_MII_BMCR, (IP1000PHY_BMCR_FDX | 406 IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_STARTNEG)); 407 408 return (EJUSTRETURN); 409 } 410 411 static void 412 ip1000phy_load_dspcode(struct mii_softc *sc) 413 { 414 415 PHY_WRITE(sc, 31, 0x0001); 416 PHY_WRITE(sc, 27, 0x01e0); 417 PHY_WRITE(sc, 31, 0x0002); 418 PHY_WRITE(sc, 27, 0xeb8e); 419 PHY_WRITE(sc, 31, 0x0000); 420 PHY_WRITE(sc, 30, 0x005e); 421 PHY_WRITE(sc, 9, 0x0700); 422 423 DELAY(50); 424 } 425 426 static void 427 ip1000phy_reset(struct mii_softc *sc) 428 { 429 struct ip1000phy_softc *isc; 430 struct stge_softc *stge_sc; 431 struct mii_data *mii; 432 uint32_t reg; 433 434 isc = (struct ip1000phy_softc *)sc; 435 mii_phy_reset(sc); 436 437 /* clear autoneg/full-duplex as we don't want it after reset */ 438 reg = PHY_READ(sc, IP1000PHY_MII_BMCR); 439 reg &= ~(IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_FDX); 440 PHY_WRITE(sc, MII_BMCR, reg); 441 442 mii = sc->mii_pdata; 443 /* 444 * XXX There should be more general way to pass PHY specific 445 * data via mii interface. 446 */ 447 if (isc->model == MII_MODEL_ICPLUS_IP1000A && 448 strcmp(mii->mii_ifp->if_dname, "stge") == 0) { 449 stge_sc = mii->mii_ifp->if_softc; 450 if (stge_sc->sc_rev >= 0x40 && stge_sc->sc_rev <= 0x4e) 451 ip1000phy_load_dspcode(sc); 452 } 453 } 454