ip1000phy.c revision 213364
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 213364 2010-10-02 18:53:12Z marius $"); 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 = ma->mii_data; 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; 121 122 sc->mii_flags |= MIIF_NOISOLATE; 123 124 isc->model = MII_MODEL(ma->mii_id2); 125 isc->revision = MII_REV(ma->mii_id2); 126 127 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 128 if (sc->mii_capabilities & BMSR_EXTSTAT) 129 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 130 device_printf(dev, " "); 131 132 ip1000phy_reset(sc); 133 mii_phy_add_media(sc); 134 printf("\n"); 135 136 MIIBUS_MEDIAINIT(sc->mii_dev); 137 return (0); 138} 139 140static int 141ip1000phy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 142{ 143 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 144 uint32_t gig, reg, speed; 145 146 switch (cmd) { 147 case MII_POLLSTAT: 148 break; 149 150 case MII_MEDIACHG: 151 /* 152 * If the interface is not up, don't do anything. 153 */ 154 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) { 155 break; 156 } 157 158 ip1000phy_reset(sc); 159 switch (IFM_SUBTYPE(ife->ifm_media)) { 160 case IFM_AUTO: 161 (void)ip1000phy_mii_phy_auto(sc); 162 goto done; 163 break; 164 165 case IFM_1000_T: 166 /* 167 * XXX 168 * Manual 1000baseT setting doesn't seem to work. 169 */ 170 speed = IP1000PHY_BMCR_1000; 171 break; 172 173 case IFM_100_TX: 174 speed = IP1000PHY_BMCR_100; 175 break; 176 177 case IFM_10_T: 178 speed = IP1000PHY_BMCR_10; 179 break; 180 181 default: 182 return (EINVAL); 183 } 184 185 if (((ife->ifm_media & IFM_GMASK) & IFM_FDX) != 0) { 186 speed |= IP1000PHY_BMCR_FDX; 187 gig = IP1000PHY_1000CR_1000T_FDX; 188 } else 189 gig = IP1000PHY_1000CR_1000T; 190 191 PHY_WRITE(sc, IP1000PHY_MII_1000CR, 0); 192 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed); 193 194 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) 195 break; 196 197 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig); 198 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed); 199 200 /* 201 * When setting the link manually, one side must 202 * be the master and the other the slave. However 203 * ifmedia doesn't give us a good way to specify 204 * this, so we fake it by using one of the LINK 205 * flags. If LINK0 is set, we program the PHY to 206 * be a master, otherwise it's a slave. 207 */ 208 if ((mii->mii_ifp->if_flags & IFF_LINK0)) 209 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig | 210 IP1000PHY_1000CR_MASTER | 211 IP1000PHY_1000CR_MMASTER | 212 IP1000PHY_1000CR_MANUAL); 213 else 214 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig | 215 IP1000PHY_1000CR_MASTER | 216 IP1000PHY_1000CR_MANUAL); 217 218done: 219 break; 220 221 case MII_TICK: 222 /* 223 * Is the interface even up? 224 */ 225 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 226 return (0); 227 228 /* 229 * Only used for autonegotiation. 230 */ 231 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { 232 sc->mii_ticks = 0; 233 break; 234 } 235 236 /* 237 * check for link. 238 */ 239 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 240 if (reg & BMSR_LINK) { 241 sc->mii_ticks = 0; 242 break; 243 } 244 245 /* Announce link loss right after it happens */ 246 if (sc->mii_ticks++ == 0) 247 break; 248 249 /* 250 * Only retry autonegotiation every mii_anegticks seconds. 251 */ 252 if (sc->mii_ticks <= sc->mii_anegticks) 253 break; 254 255 sc->mii_ticks = 0; 256 ip1000phy_mii_phy_auto(sc); 257 break; 258 } 259 260 /* Update the media status. */ 261 ip1000phy_status(sc); 262 263 /* Callback if something changed. */ 264 mii_phy_update(sc, cmd); 265 return (0); 266} 267 268static void 269ip1000phy_status(struct mii_softc *sc) 270{ 271 struct ip1000phy_softc *isc; 272 struct mii_data *mii = sc->mii_pdata; 273 uint32_t bmsr, bmcr, stat; 274 uint32_t ar, lpar; 275 276 isc = (struct ip1000phy_softc *)sc; 277 278 mii->mii_media_status = IFM_AVALID; 279 mii->mii_media_active = IFM_ETHER; 280 281 bmsr = PHY_READ(sc, IP1000PHY_MII_BMSR) | 282 PHY_READ(sc, IP1000PHY_MII_BMSR); 283 if ((bmsr & IP1000PHY_BMSR_LINK) != 0) 284 mii->mii_media_status |= IFM_ACTIVE; 285 286 bmcr = PHY_READ(sc, IP1000PHY_MII_BMCR); 287 if ((bmcr & IP1000PHY_BMCR_LOOP) != 0) 288 mii->mii_media_active |= IFM_LOOP; 289 290 if ((bmcr & IP1000PHY_BMCR_AUTOEN) != 0) { 291 if ((bmsr & IP1000PHY_BMSR_ANEGCOMP) == 0) { 292 /* Erg, still trying, I guess... */ 293 mii->mii_media_active |= IFM_NONE; 294 return; 295 } 296 } 297 298 if (isc->model == MII_MODEL_ICPLUS_IP1001) { 299 stat = PHY_READ(sc, IP1000PHY_LSR); 300 switch (stat & IP1000PHY_LSR_SPEED_MASK) { 301 case IP1000PHY_LSR_SPEED_10: 302 mii->mii_media_active |= IFM_10_T; 303 break; 304 case IP1000PHY_LSR_SPEED_100: 305 mii->mii_media_active |= IFM_100_TX; 306 break; 307 case IP1000PHY_LSR_SPEED_1000: 308 mii->mii_media_active |= IFM_1000_T; 309 break; 310 default: 311 mii->mii_media_active |= IFM_NONE; 312 return; 313 } 314 if ((stat & IP1000PHY_LSR_FULL_DUPLEX) != 0) 315 mii->mii_media_active |= IFM_FDX; 316 else 317 mii->mii_media_active |= IFM_HDX; 318 } else { 319 stat = PHY_READ(sc, STGE_PhyCtrl); 320 switch (PC_LinkSpeed(stat)) { 321 case PC_LinkSpeed_Down: 322 mii->mii_media_active |= IFM_NONE; 323 return; 324 case PC_LinkSpeed_10: 325 mii->mii_media_active |= IFM_10_T; 326 break; 327 case PC_LinkSpeed_100: 328 mii->mii_media_active |= IFM_100_TX; 329 break; 330 case PC_LinkSpeed_1000: 331 mii->mii_media_active |= IFM_1000_T; 332 break; 333 default: 334 mii->mii_media_active |= IFM_NONE; 335 return; 336 } 337 if ((stat & PC_PhyDuplexStatus) != 0) 338 mii->mii_media_active |= IFM_FDX; 339 else 340 mii->mii_media_active |= IFM_HDX; 341 } 342 343 ar = PHY_READ(sc, IP1000PHY_MII_ANAR); 344 lpar = PHY_READ(sc, IP1000PHY_MII_ANLPAR); 345 346 /* 347 * FLAG0 : Rx flow-control 348 * FLAG1 : Tx flow-control 349 */ 350 if ((ar & IP1000PHY_ANAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_PAUSE)) 351 mii->mii_media_active |= IFM_FLAG0 | IFM_FLAG1; 352 else if (!(ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) && 353 (lpar & IP1000PHY_ANLPAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_APAUSE)) 354 mii->mii_media_active |= IFM_FLAG1; 355 else if ((ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) && 356 !(lpar & IP1000PHY_ANLPAR_PAUSE) && 357 (lpar & IP1000PHY_ANLPAR_APAUSE)) { 358 mii->mii_media_active |= IFM_FLAG0; 359 } 360 361 /* 362 * FLAG2 : local PHY resolved to MASTER 363 */ 364 if ((mii->mii_media_active & IFM_1000_T) != 0) { 365 stat = PHY_READ(sc, IP1000PHY_MII_1000SR); 366 if ((stat & IP1000PHY_1000SR_MASTER) != 0) 367 mii->mii_media_active |= IFM_FLAG2; 368 } 369} 370 371static int 372ip1000phy_mii_phy_auto(struct mii_softc *sc) 373{ 374 struct ip1000phy_softc *isc; 375 uint32_t reg; 376 377 isc = (struct ip1000phy_softc *)sc; 378 reg = 0; 379 if (isc->model == MII_MODEL_ICPLUS_IP1001) { 380 reg = PHY_READ(sc, IP1000PHY_MII_ANAR); 381 reg |= IP1000PHY_ANAR_NP; 382 } 383 reg |= IP1000PHY_ANAR_10T | IP1000PHY_ANAR_10T_FDX | 384 IP1000PHY_ANAR_100TX | IP1000PHY_ANAR_100TX_FDX | 385 IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE; 386 PHY_WRITE(sc, IP1000PHY_MII_ANAR, reg | IP1000PHY_ANAR_CSMA); 387 388 reg = IP1000PHY_1000CR_1000T | IP1000PHY_1000CR_1000T_FDX; 389 reg |= IP1000PHY_1000CR_MASTER; 390 PHY_WRITE(sc, IP1000PHY_MII_1000CR, reg); 391 PHY_WRITE(sc, IP1000PHY_MII_BMCR, (IP1000PHY_BMCR_FDX | 392 IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_STARTNEG)); 393 394 return (EJUSTRETURN); 395} 396 397static void 398ip1000phy_load_dspcode(struct mii_softc *sc) 399{ 400 401 PHY_WRITE(sc, 31, 0x0001); 402 PHY_WRITE(sc, 27, 0x01e0); 403 PHY_WRITE(sc, 31, 0x0002); 404 PHY_WRITE(sc, 27, 0xeb8e); 405 PHY_WRITE(sc, 31, 0x0000); 406 PHY_WRITE(sc, 30, 0x005e); 407 PHY_WRITE(sc, 9, 0x0700); 408 409 DELAY(50); 410} 411 412static void 413ip1000phy_reset(struct mii_softc *sc) 414{ 415 struct ip1000phy_softc *isc; 416 struct stge_softc *stge_sc; 417 struct mii_data *mii; 418 uint32_t reg; 419 420 isc = (struct ip1000phy_softc *)sc; 421 mii_phy_reset(sc); 422 423 /* clear autoneg/full-duplex as we don't want it after reset */ 424 reg = PHY_READ(sc, IP1000PHY_MII_BMCR); 425 reg &= ~(IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_FDX); 426 PHY_WRITE(sc, MII_BMCR, reg); 427 428 mii = sc->mii_pdata; 429 /* 430 * XXX There should be more general way to pass PHY specific 431 * data via mii interface. 432 */ 433 if (isc->model == MII_MODEL_ICPLUS_IP1000A && 434 strcmp(mii->mii_ifp->if_dname, "stge") == 0) { 435 stge_sc = mii->mii_ifp->if_softc; 436 if (stge_sc->sc_rev >= 0x40 && stge_sc->sc_rev <= 0x4e) 437 ip1000phy_load_dspcode(sc); 438 } 439} 440