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 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 44 #include <net/if.h> 45 #include <net/if_media.h> 46 47 #include <dev/mii/mii.h> 48 #include <dev/mii/miivar.h> 49 #include "miidevs.h" 50 51 #include <dev/mii/ip1000phyreg.h> 52 53 #include "miibus_if.h" 54 55 #include <machine/bus.h> 56 #include <dev/stge/if_stgereg.h> 57 58 static int ip1000phy_probe(device_t); 59 static int ip1000phy_attach(device_t); 60 61 static device_method_t ip1000phy_methods[] = { 62 /* device interface */ 63 DEVMETHOD(device_probe, ip1000phy_probe), 64 DEVMETHOD(device_attach, ip1000phy_attach), 65 DEVMETHOD(device_detach, mii_phy_detach), 66 DEVMETHOD(device_shutdown, bus_generic_shutdown), 67 { 0, 0 } 68 }; 69 70 static devclass_t ip1000phy_devclass; 71 static driver_t ip1000phy_driver = { 72 "ip1000phy", 73 ip1000phy_methods, 74 sizeof (struct mii_softc) 75 }; 76 77 DRIVER_MODULE(ip1000phy, miibus, ip1000phy_driver, ip1000phy_devclass, 0, 0); 78 79 static int ip1000phy_service(struct mii_softc *, struct mii_data *, int); 80 static void ip1000phy_status(struct mii_softc *); 81 static void ip1000phy_reset(struct mii_softc *); 82 static int ip1000phy_mii_phy_auto(struct mii_softc *); 83 84 static const struct mii_phydesc ip1000phys[] = { 85 MII_PHY_DESC(ICPLUS, IP1000A), 86 MII_PHY_END 87 }; 88 89 static int 90 ip1000phy_probe(device_t dev) 91 { 92 struct mii_attach_args *ma; 93 const struct mii_phydesc *mpd; 94 95 ma = device_get_ivars(dev); 96 mpd = mii_phy_match(ma, ip1000phys); 97 if (mpd != NULL) { 98 device_set_desc(dev, mpd->mpd_name); 99 return (BUS_PROBE_DEFAULT); 100 } 101 102 return (ENXIO); 103 } 104 105 static int 106 ip1000phy_attach(device_t dev) 107 { 108 struct mii_softc *sc; 109 struct mii_attach_args *ma; 110 struct mii_data *mii; 111 112 sc = device_get_softc(dev); 113 ma = device_get_ivars(dev); 114 sc->mii_dev = device_get_parent(dev); 115 mii = device_get_softc(sc->mii_dev); 116 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 117 118 sc->mii_inst = mii->mii_instance; 119 sc->mii_phy = ma->mii_phyno; 120 sc->mii_service = ip1000phy_service; 121 sc->mii_pdata = mii; 122 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 123 sc->mii_flags |= MIIF_NOISOLATE; 124 125 mii->mii_instance++; 126 127 device_printf(dev, " "); 128 129 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 130 131 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 132 BMCR_ISO); 133 134 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), 135 IP1000PHY_BMCR_10); 136 printf("10baseT, "); 137 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst), 138 IP1000PHY_BMCR_10 | IP1000PHY_BMCR_FDX); 139 printf("10baseT-FDX, "); 140 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst), 141 IP1000PHY_BMCR_100); 142 printf("100baseTX, "); 143 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst), 144 IP1000PHY_BMCR_100 | IP1000PHY_BMCR_FDX); 145 printf("100baseTX-FDX, "); 146 /* 1000baseT half-duplex, really supported? */ 147 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst), 148 IP1000PHY_BMCR_1000); 149 printf("1000baseTX, "); 150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, sc->mii_inst), 151 IP1000PHY_BMCR_1000 | IP1000PHY_BMCR_FDX); 152 printf("1000baseTX-FDX, "); 153 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 154 printf("auto\n"); 155 #undef ADD 156 157 ip1000phy_reset(sc); 158 159 MIIBUS_MEDIAINIT(sc->mii_dev); 160 return(0); 161 } 162 163 static int 164 ip1000phy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 165 { 166 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 167 uint32_t gig, reg, speed; 168 169 switch (cmd) { 170 case MII_POLLSTAT: 171 /* 172 * If we're not polling our PHY instance, just return. 173 */ 174 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 175 return (0); 176 break; 177 178 case MII_MEDIACHG: 179 /* 180 * If the media indicates a different PHY instance, 181 * isolate ourselves. 182 */ 183 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 184 reg = PHY_READ(sc, IP1000PHY_MII_BMCR); 185 PHY_WRITE(sc, IP1000PHY_MII_BMCR, 186 reg | IP1000PHY_BMCR_ISO); 187 return (0); 188 } 189 190 /* 191 * If the interface is not up, don't do anything. 192 */ 193 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) { 194 break; 195 } 196 197 ip1000phy_reset(sc); 198 switch (IFM_SUBTYPE(ife->ifm_media)) { 199 case IFM_AUTO: 200 (void)ip1000phy_mii_phy_auto(sc); 201 goto done; 202 break; 203 204 case IFM_1000_T: 205 /* 206 * XXX 207 * Manual 1000baseT setting doesn't seem to work. 208 */ 209 speed = IP1000PHY_BMCR_1000; 210 break; 211 212 case IFM_100_TX: 213 speed = IP1000PHY_BMCR_100; 214 break; 215 216 case IFM_10_T: 217 speed = IP1000PHY_BMCR_10; 218 break; 219 220 default: 221 return (EINVAL); 222 } 223 224 if (((ife->ifm_media & IFM_GMASK) & IFM_FDX) != 0) { 225 speed |= IP1000PHY_BMCR_FDX; 226 gig = IP1000PHY_1000CR_1000T_FDX; 227 } else 228 gig = IP1000PHY_1000CR_1000T; 229 230 PHY_WRITE(sc, IP1000PHY_MII_1000CR, 0); 231 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed); 232 233 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) 234 break; 235 236 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig); 237 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed); 238 239 /* 240 * When settning the link manually, one side must 241 * be the master and the other the slave. However 242 * ifmedia doesn't give us a good way to specify 243 * this, so we fake it by using one of the LINK 244 * flags. If LINK0 is set, we program the PHY to 245 * be a master, otherwise it's a slave. 246 */ 247 if ((mii->mii_ifp->if_flags & IFF_LINK0)) 248 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig | 249 IP1000PHY_1000CR_MASTER | 250 IP1000PHY_1000CR_MMASTER | 251 IP1000PHY_1000CR_MANUAL); 252 else 253 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig | 254 IP1000PHY_1000CR_MASTER | 255 IP1000PHY_1000CR_MANUAL); 256 257 done: 258 break; 259 260 case MII_TICK: 261 /* 262 * If we're not currently selected, just return. 263 */ 264 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 265 return (0); 266 /* 267 * Is the interface even up? 268 */ 269 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 270 return (0); 271 272 /* 273 * Only used for autonegotiation. 274 */ 275 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { 276 sc->mii_ticks = 0; 277 break; 278 } 279 280 /* 281 * check for link. 282 */ 283 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 284 if (reg & BMSR_LINK) { 285 sc->mii_ticks = 0; 286 break; 287 } 288 289 /* Announce link loss right after it happens */ 290 if (sc->mii_ticks++ == 0) 291 break; 292 293 /* 294 * Only retry autonegotiation every mii_anegticks seconds. 295 */ 296 if (sc->mii_ticks <= sc->mii_anegticks) 297 return (0); 298 299 sc->mii_ticks = 0; 300 ip1000phy_mii_phy_auto(sc); 301 break; 302 } 303 304 /* Update the media status. */ 305 ip1000phy_status(sc); 306 307 /* Callback if something changed. */ 308 mii_phy_update(sc, cmd); 309 return (0); 310 } 311 312 static void 313 ip1000phy_status(struct mii_softc *sc) 314 { 315 struct mii_data *mii = sc->mii_pdata; 316 uint32_t bmsr, bmcr, stat; 317 uint32_t ar, lpar; 318 319 mii->mii_media_status = IFM_AVALID; 320 mii->mii_media_active = IFM_ETHER; 321 322 bmsr = PHY_READ(sc, IP1000PHY_MII_BMSR) | 323 PHY_READ(sc, IP1000PHY_MII_BMSR); 324 if ((bmsr & IP1000PHY_BMSR_LINK) != 0) 325 mii->mii_media_status |= IFM_ACTIVE; 326 327 bmcr = PHY_READ(sc, IP1000PHY_MII_BMCR); 328 if ((bmcr & IP1000PHY_BMCR_LOOP) != 0) 329 mii->mii_media_active |= IFM_LOOP; 330 331 if ((bmcr & IP1000PHY_BMCR_AUTOEN) != 0) { 332 if ((bmsr & IP1000PHY_BMSR_ANEGCOMP) == 0) { 333 /* Erg, still trying, I guess... */ 334 mii->mii_media_active |= IFM_NONE; 335 return; 336 } 337 } 338 339 stat = PHY_READ(sc, STGE_PhyCtrl); 340 switch (PC_LinkSpeed(stat)) { 341 case PC_LinkSpeed_Down: 342 mii->mii_media_active |= IFM_NONE; 343 return; 344 case PC_LinkSpeed_10: 345 mii->mii_media_active |= IFM_10_T; 346 break; 347 case PC_LinkSpeed_100: 348 mii->mii_media_active |= IFM_100_TX; 349 break; 350 case PC_LinkSpeed_1000: 351 mii->mii_media_active |= IFM_1000_T; 352 break; 353 } 354 if ((stat & PC_PhyDuplexStatus) != 0) 355 mii->mii_media_active |= IFM_FDX; 356 else 357 mii->mii_media_active |= IFM_HDX; 358 359 ar = PHY_READ(sc, IP1000PHY_MII_ANAR); 360 lpar = PHY_READ(sc, IP1000PHY_MII_ANLPAR); 361 362 /* 363 * FLAG0 : Rx flow-control 364 * FLAG1 : Tx flow-control 365 */ 366 if ((ar & IP1000PHY_ANAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_PAUSE)) 367 mii->mii_media_active |= IFM_FLAG0 | IFM_FLAG1; 368 else if (!(ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) && 369 (lpar & IP1000PHY_ANLPAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_APAUSE)) 370 mii->mii_media_active |= IFM_FLAG1; 371 else if ((ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) && 372 !(lpar & IP1000PHY_ANLPAR_PAUSE) && 373 (lpar & IP1000PHY_ANLPAR_APAUSE)) { 374 mii->mii_media_active |= IFM_FLAG0; 375 } 376 377 /* 378 * FLAG2 : local PHY resolved to MASTER 379 */ 380 if ((mii->mii_media_active & IFM_1000_T) != 0) { 381 stat = PHY_READ(sc, IP1000PHY_MII_1000SR); 382 if ((stat & IP1000PHY_1000SR_MASTER) != 0) 383 mii->mii_media_active |= IFM_FLAG2; 384 } 385 } 386 387 static int 388 ip1000phy_mii_phy_auto(struct mii_softc *mii) 389 { 390 uint32_t reg; 391 392 PHY_WRITE(mii, IP1000PHY_MII_ANAR, 393 IP1000PHY_ANAR_10T | IP1000PHY_ANAR_10T_FDX | 394 IP1000PHY_ANAR_100TX | IP1000PHY_ANAR_100TX_FDX | 395 IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE); 396 reg = IP1000PHY_1000CR_1000T | IP1000PHY_1000CR_1000T_FDX; 397 reg |= IP1000PHY_1000CR_MASTER; 398 PHY_WRITE(mii, IP1000PHY_MII_1000CR, reg); 399 PHY_WRITE(mii, IP1000PHY_MII_BMCR, (IP1000PHY_BMCR_FDX | 400 IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_STARTNEG)); 401 402 return (EJUSTRETURN); 403 } 404 405 static void 406 ip1000phy_load_dspcode(struct mii_softc *sc) 407 { 408 409 PHY_WRITE(sc, 31, 0x0001); 410 PHY_WRITE(sc, 27, 0x01e0); 411 PHY_WRITE(sc, 31, 0x0002); 412 PHY_WRITE(sc, 27, 0xeb8e); 413 PHY_WRITE(sc, 31, 0x0000); 414 PHY_WRITE(sc, 30, 0x005e); 415 PHY_WRITE(sc, 9, 0x0700); 416 417 DELAY(50); 418 } 419 420 static void 421 ip1000phy_reset(struct mii_softc *sc) 422 { 423 struct stge_softc *stge_sc; 424 struct mii_data *mii; 425 uint32_t reg; 426 427 mii_phy_reset(sc); 428 429 /* clear autoneg/full-duplex as we don't want it after reset */ 430 reg = PHY_READ(sc, IP1000PHY_MII_BMCR); 431 reg &= ~(IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_FDX); 432 PHY_WRITE(sc, MII_BMCR, reg); 433 434 mii = sc->mii_pdata; 435 /* 436 * XXX There should be more general way to pass PHY specific 437 * data via mii interface. 438 */ 439 if (strcmp(mii->mii_ifp->if_dname, "stge") == 0) { 440 stge_sc = mii->mii_ifp->if_softc; 441 if (stge_sc->sc_rev >= 0x40 && stge_sc->sc_rev <= 0x4e) 442 ip1000phy_load_dspcode(sc); 443 } 444 } 445