ip1000phy.c revision 177930
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: head/sys/dev/mii/ip1000phy.c 177930 2008-04-05 00:52:07Z yongari $"); 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 57static int ip1000phy_probe(device_t); 58static int ip1000phy_attach(device_t); 59 60struct ip1000phy_softc { 61 struct mii_softc mii_sc; 62 int model; 63 int revision; 64}; 65 66static 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 75static devclass_t ip1000phy_devclass; 76static driver_t ip1000phy_driver = { 77 "ip1000phy", 78 ip1000phy_methods, 79 sizeof (struct mii_softc) 80}; 81 82DRIVER_MODULE(ip1000phy, miibus, ip1000phy_driver, ip1000phy_devclass, 0, 0); 83 84static int ip1000phy_service(struct mii_softc *, struct mii_data *, int); 85static void ip1000phy_status(struct mii_softc *); 86static void ip1000phy_reset(struct mii_softc *); 87static int ip1000phy_mii_phy_auto(struct mii_softc *); 88 89static const struct mii_phydesc ip1000phys[] = { 90 MII_PHY_DESC(ICPLUS, IP1000A), 91 MII_PHY_DESC(ICPLUS, IP1001), 92 MII_PHY_END 93}; 94 95static int 96ip1000phy_probe(device_t dev) 97{ 98 99 return (mii_phy_dev_probe(dev, ip1000phys, BUS_PROBE_DEFAULT)); 100} 101 102static int 103ip1000phy_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_anegticks = MII_ANEGTICKS_GIGE; 122 sc->mii_flags |= MIIF_NOISOLATE; 123 124 mii->mii_instance++; 125 126 isc->model = MII_MODEL(ma->mii_id2); 127 isc->revision = MII_REV(ma->mii_id2); 128 129 device_printf(dev, " "); 130 131#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 132 133 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 134 BMCR_ISO); 135 136 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), 137 IP1000PHY_BMCR_10); 138 printf("10baseT, "); 139 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst), 140 IP1000PHY_BMCR_10 | IP1000PHY_BMCR_FDX); 141 printf("10baseT-FDX, "); 142 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst), 143 IP1000PHY_BMCR_100); 144 printf("100baseTX, "); 145 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst), 146 IP1000PHY_BMCR_100 | IP1000PHY_BMCR_FDX); 147 printf("100baseTX-FDX, "); 148 /* 1000baseT half-duplex, really supported? */ 149 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst), 150 IP1000PHY_BMCR_1000); 151 printf("1000baseTX, "); 152 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, sc->mii_inst), 153 IP1000PHY_BMCR_1000 | IP1000PHY_BMCR_FDX); 154 printf("1000baseTX-FDX, "); 155 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 156 printf("auto\n"); 157#undef ADD 158 159 ip1000phy_reset(sc); 160 161 MIIBUS_MEDIAINIT(sc->mii_dev); 162 return(0); 163} 164 165static int 166ip1000phy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 167{ 168 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 169 uint32_t gig, reg, speed; 170 171 switch (cmd) { 172 case MII_POLLSTAT: 173 /* 174 * If we're not polling our PHY instance, just return. 175 */ 176 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 177 return (0); 178 break; 179 180 case MII_MEDIACHG: 181 /* 182 * If the media indicates a different PHY instance, 183 * isolate ourselves. 184 */ 185 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 186 reg = PHY_READ(sc, IP1000PHY_MII_BMCR); 187 PHY_WRITE(sc, IP1000PHY_MII_BMCR, 188 reg | IP1000PHY_BMCR_ISO); 189 return (0); 190 } 191 192 /* 193 * If the interface is not up, don't do anything. 194 */ 195 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) { 196 break; 197 } 198 199 ip1000phy_reset(sc); 200 switch (IFM_SUBTYPE(ife->ifm_media)) { 201 case IFM_AUTO: 202 (void)ip1000phy_mii_phy_auto(sc); 203 goto done; 204 break; 205 206 case IFM_1000_T: 207 /* 208 * XXX 209 * Manual 1000baseT setting doesn't seem to work. 210 */ 211 speed = IP1000PHY_BMCR_1000; 212 break; 213 214 case IFM_100_TX: 215 speed = IP1000PHY_BMCR_100; 216 break; 217 218 case IFM_10_T: 219 speed = IP1000PHY_BMCR_10; 220 break; 221 222 default: 223 return (EINVAL); 224 } 225 226 if (((ife->ifm_media & IFM_GMASK) & IFM_FDX) != 0) { 227 speed |= IP1000PHY_BMCR_FDX; 228 gig = IP1000PHY_1000CR_1000T_FDX; 229 } else 230 gig = IP1000PHY_1000CR_1000T; 231 232 PHY_WRITE(sc, IP1000PHY_MII_1000CR, 0); 233 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed); 234 235 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) 236 break; 237 238 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig); 239 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed); 240 241 /* 242 * When setting the link manually, one side must 243 * be the master and the other the slave. However 244 * ifmedia doesn't give us a good way to specify 245 * this, so we fake it by using one of the LINK 246 * flags. If LINK0 is set, we program the PHY to 247 * be a master, otherwise it's a slave. 248 */ 249 if ((mii->mii_ifp->if_flags & IFF_LINK0)) 250 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig | 251 IP1000PHY_1000CR_MASTER | 252 IP1000PHY_1000CR_MMASTER | 253 IP1000PHY_1000CR_MANUAL); 254 else 255 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig | 256 IP1000PHY_1000CR_MASTER | 257 IP1000PHY_1000CR_MANUAL); 258 259done: 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 * Is the interface even up? 270 */ 271 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 272 return (0); 273 274 /* 275 * Only used for autonegotiation. 276 */ 277 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { 278 sc->mii_ticks = 0; 279 break; 280 } 281 282 /* 283 * check for link. 284 */ 285 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 286 if (reg & BMSR_LINK) { 287 sc->mii_ticks = 0; 288 break; 289 } 290 291 /* Announce link loss right after it happens */ 292 if (sc->mii_ticks++ == 0) 293 break; 294 295 /* 296 * Only retry autonegotiation every mii_anegticks seconds. 297 */ 298 if (sc->mii_ticks <= sc->mii_anegticks) 299 return (0); 300 301 sc->mii_ticks = 0; 302 ip1000phy_mii_phy_auto(sc); 303 break; 304 } 305 306 /* Update the media status. */ 307 ip1000phy_status(sc); 308 309 /* Callback if something changed. */ 310 mii_phy_update(sc, cmd); 311 return (0); 312} 313 314static void 315ip1000phy_status(struct mii_softc *sc) 316{ 317 struct ip1000phy_softc *isc; 318 struct mii_data *mii = sc->mii_pdata; 319 uint32_t bmsr, bmcr, stat; 320 uint32_t ar, lpar; 321 322 isc = (struct ip1000phy_softc *)sc; 323 324 mii->mii_media_status = IFM_AVALID; 325 mii->mii_media_active = IFM_ETHER; 326 327 bmsr = PHY_READ(sc, IP1000PHY_MII_BMSR) | 328 PHY_READ(sc, IP1000PHY_MII_BMSR); 329 if ((bmsr & IP1000PHY_BMSR_LINK) != 0) 330 mii->mii_media_status |= IFM_ACTIVE; 331 332 bmcr = PHY_READ(sc, IP1000PHY_MII_BMCR); 333 if ((bmcr & IP1000PHY_BMCR_LOOP) != 0) 334 mii->mii_media_active |= IFM_LOOP; 335 336 if ((bmcr & IP1000PHY_BMCR_AUTOEN) != 0) { 337 if ((bmsr & IP1000PHY_BMSR_ANEGCOMP) == 0) { 338 /* Erg, still trying, I guess... */ 339 mii->mii_media_active |= IFM_NONE; 340 return; 341 } 342 } 343 344 if (isc->model == MII_MODEL_ICPLUS_IP1001) { 345 stat = PHY_READ(sc, IP1000PHY_LSR); 346 switch (stat & IP1000PHY_LSR_SPEED_MASK) { 347 case IP1000PHY_LSR_SPEED_10: 348 mii->mii_media_active |= IFM_10_T; 349 break; 350 case IP1000PHY_LSR_SPEED_100: 351 mii->mii_media_active |= IFM_100_TX; 352 break; 353 case IP1000PHY_LSR_SPEED_1000: 354 mii->mii_media_active |= IFM_1000_T; 355 break; 356 } 357 if ((stat & IP1000PHY_LSR_FULL_DUPLEX) != 0) 358 mii->mii_media_active |= IFM_FDX; 359 else 360 mii->mii_media_active |= IFM_HDX; 361 } else { 362 stat = PHY_READ(sc, STGE_PhyCtrl); 363 switch (PC_LinkSpeed(stat)) { 364 case PC_LinkSpeed_Down: 365 mii->mii_media_active |= IFM_NONE; 366 return; 367 case PC_LinkSpeed_10: 368 mii->mii_media_active |= IFM_10_T; 369 break; 370 case PC_LinkSpeed_100: 371 mii->mii_media_active |= IFM_100_TX; 372 break; 373 case PC_LinkSpeed_1000: 374 mii->mii_media_active |= IFM_1000_T; 375 break; 376 } 377 if ((stat & PC_PhyDuplexStatus) != 0) 378 mii->mii_media_active |= IFM_FDX; 379 else 380 mii->mii_media_active |= IFM_HDX; 381 } 382 383 ar = PHY_READ(sc, IP1000PHY_MII_ANAR); 384 lpar = PHY_READ(sc, IP1000PHY_MII_ANLPAR); 385 386 /* 387 * FLAG0 : Rx flow-control 388 * FLAG1 : Tx flow-control 389 */ 390 if ((ar & IP1000PHY_ANAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_PAUSE)) 391 mii->mii_media_active |= IFM_FLAG0 | IFM_FLAG1; 392 else if (!(ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) && 393 (lpar & IP1000PHY_ANLPAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_APAUSE)) 394 mii->mii_media_active |= IFM_FLAG1; 395 else if ((ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) && 396 !(lpar & IP1000PHY_ANLPAR_PAUSE) && 397 (lpar & IP1000PHY_ANLPAR_APAUSE)) { 398 mii->mii_media_active |= IFM_FLAG0; 399 } 400 401 /* 402 * FLAG2 : local PHY resolved to MASTER 403 */ 404 if ((mii->mii_media_active & IFM_1000_T) != 0) { 405 stat = PHY_READ(sc, IP1000PHY_MII_1000SR); 406 if ((stat & IP1000PHY_1000SR_MASTER) != 0) 407 mii->mii_media_active |= IFM_FLAG2; 408 } 409} 410 411static int 412ip1000phy_mii_phy_auto(struct mii_softc *mii) 413{ 414 uint32_t reg; 415 416 PHY_WRITE(mii, IP1000PHY_MII_ANAR, 417 IP1000PHY_ANAR_10T | IP1000PHY_ANAR_10T_FDX | 418 IP1000PHY_ANAR_100TX | IP1000PHY_ANAR_100TX_FDX | 419 IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE); 420 reg = IP1000PHY_1000CR_1000T | IP1000PHY_1000CR_1000T_FDX; 421 reg |= IP1000PHY_1000CR_MASTER; 422 PHY_WRITE(mii, IP1000PHY_MII_1000CR, reg); 423 PHY_WRITE(mii, IP1000PHY_MII_BMCR, (IP1000PHY_BMCR_FDX | 424 IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_STARTNEG)); 425 426 return (EJUSTRETURN); 427} 428 429static void 430ip1000phy_load_dspcode(struct mii_softc *sc) 431{ 432 433 PHY_WRITE(sc, 31, 0x0001); 434 PHY_WRITE(sc, 27, 0x01e0); 435 PHY_WRITE(sc, 31, 0x0002); 436 PHY_WRITE(sc, 27, 0xeb8e); 437 PHY_WRITE(sc, 31, 0x0000); 438 PHY_WRITE(sc, 30, 0x005e); 439 PHY_WRITE(sc, 9, 0x0700); 440 441 DELAY(50); 442} 443 444static void 445ip1000phy_reset(struct mii_softc *sc) 446{ 447 struct ip1000phy_softc *isc; 448 struct stge_softc *stge_sc; 449 struct mii_data *mii; 450 uint32_t reg; 451 452 isc = (struct ip1000phy_softc *)sc; 453 mii_phy_reset(sc); 454 455 /* clear autoneg/full-duplex as we don't want it after reset */ 456 reg = PHY_READ(sc, IP1000PHY_MII_BMCR); 457 reg &= ~(IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_FDX); 458 PHY_WRITE(sc, MII_BMCR, reg); 459 460 mii = sc->mii_pdata; 461 /* 462 * XXX There should be more general way to pass PHY specific 463 * data via mii interface. 464 */ 465 if (isc->model == MII_MODEL_ICPLUS_IP1000A && 466 strcmp(mii->mii_ifp->if_dname, "stge") == 0) { 467 stge_sc = mii->mii_ifp->if_softc; 468 if (stge_sc->sc_rev >= 0x40 && stge_sc->sc_rev <= 0x4e) 469 ip1000phy_load_dspcode(sc); 470 } 471} 472