Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/ip1000phy.c
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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: releng/8.2/sys/dev/mii/ip1000phy.c 216006 2010-11-28 16:09:36Z 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 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 *, int); 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 = ma->mii_data; 115 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 116 117 sc->mii_flags = miibus_get_flags(dev); 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; 122 123 sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOMANPAUSE; 124 125 isc->model = MII_MODEL(ma->mii_id2); 126 isc->revision = MII_REV(ma->mii_id2); 127 if (isc->model == MII_MODEL_ICPLUS_IP1000A && 128 strcmp(mii->mii_ifp->if_dname, "stge") == 0 && 129 (sc->mii_flags & MIIF_MACPRIV0) != 0) 130 sc->mii_flags |= MIIF_PHYPRIV0; 131 132 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 133 if (sc->mii_capabilities & BMSR_EXTSTAT) 134 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 135 device_printf(dev, " "); 136 137 ip1000phy_reset(sc); 138 mii_phy_add_media(sc); 139 printf("\n"); 140 141 MIIBUS_MEDIAINIT(sc->mii_dev); 142 return (0); 143 } 144 145 static int 146 ip1000phy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 147 { 148 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 149 uint32_t gig, reg, speed; 150 151 switch (cmd) { 152 case MII_POLLSTAT: 153 break; 154 155 case MII_MEDIACHG: 156 /* 157 * If the interface is not up, don't do anything. 158 */ 159 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) { 160 break; 161 } 162 163 ip1000phy_reset(sc); 164 switch (IFM_SUBTYPE(ife->ifm_media)) { 165 case IFM_AUTO: 166 (void)ip1000phy_mii_phy_auto(sc, ife->ifm_media); 167 goto done; 168 169 case IFM_1000_T: 170 /* 171 * XXX 172 * Manual 1000baseT setting doesn't seem to work. 173 */ 174 speed = IP1000PHY_BMCR_1000; 175 break; 176 177 case IFM_100_TX: 178 speed = IP1000PHY_BMCR_100; 179 break; 180 181 case IFM_10_T: 182 speed = IP1000PHY_BMCR_10; 183 break; 184 185 default: 186 return (EINVAL); 187 } 188 189 if (((ife->ifm_media & IFM_GMASK) & IFM_FDX) != 0) { 190 speed |= IP1000PHY_BMCR_FDX; 191 gig = IP1000PHY_1000CR_1000T_FDX; 192 } else 193 gig = IP1000PHY_1000CR_1000T; 194 195 PHY_WRITE(sc, IP1000PHY_MII_1000CR, 0); 196 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed); 197 198 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) 199 break; 200 201 gig |= IP1000PHY_1000CR_MASTER | IP1000PHY_1000CR_MANUAL; 202 if ((ife->ifm_media & IFM_ETH_MASTER) != 0 || 203 (mii->mii_ifp->if_flags & IFF_LINK0) != 0) 204 gig |= IP1000PHY_1000CR_MMASTER; 205 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig); 206 207 done: 208 break; 209 210 case MII_TICK: 211 /* 212 * Is the interface even up? 213 */ 214 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 215 return (0); 216 217 /* 218 * Only used for autonegotiation. 219 */ 220 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { 221 sc->mii_ticks = 0; 222 break; 223 } 224 225 /* 226 * check for link. 227 */ 228 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 229 if (reg & BMSR_LINK) { 230 sc->mii_ticks = 0; 231 break; 232 } 233 234 /* Announce link loss right after it happens */ 235 if (sc->mii_ticks++ == 0) 236 break; 237 238 /* 239 * Only retry autonegotiation every mii_anegticks seconds. 240 */ 241 if (sc->mii_ticks <= sc->mii_anegticks) 242 break; 243 244 sc->mii_ticks = 0; 245 ip1000phy_mii_phy_auto(sc, ife->ifm_media); 246 break; 247 } 248 249 /* Update the media status. */ 250 ip1000phy_status(sc); 251 252 /* Callback if something changed. */ 253 mii_phy_update(sc, cmd); 254 return (0); 255 } 256 257 static void 258 ip1000phy_status(struct mii_softc *sc) 259 { 260 struct ip1000phy_softc *isc; 261 struct mii_data *mii = sc->mii_pdata; 262 uint32_t bmsr, bmcr, stat; 263 264 isc = (struct ip1000phy_softc *)sc; 265 266 mii->mii_media_status = IFM_AVALID; 267 mii->mii_media_active = IFM_ETHER; 268 269 bmsr = PHY_READ(sc, IP1000PHY_MII_BMSR) | 270 PHY_READ(sc, IP1000PHY_MII_BMSR); 271 if ((bmsr & IP1000PHY_BMSR_LINK) != 0) 272 mii->mii_media_status |= IFM_ACTIVE; 273 274 bmcr = PHY_READ(sc, IP1000PHY_MII_BMCR); 275 if ((bmcr & IP1000PHY_BMCR_LOOP) != 0) 276 mii->mii_media_active |= IFM_LOOP; 277 278 if ((bmcr & IP1000PHY_BMCR_AUTOEN) != 0) { 279 if ((bmsr & IP1000PHY_BMSR_ANEGCOMP) == 0) { 280 /* Erg, still trying, I guess... */ 281 mii->mii_media_active |= IFM_NONE; 282 return; 283 } 284 } 285 286 if (isc->model == MII_MODEL_ICPLUS_IP1001) { 287 stat = PHY_READ(sc, IP1000PHY_LSR); 288 switch (stat & IP1000PHY_LSR_SPEED_MASK) { 289 case IP1000PHY_LSR_SPEED_10: 290 mii->mii_media_active |= IFM_10_T; 291 break; 292 case IP1000PHY_LSR_SPEED_100: 293 mii->mii_media_active |= IFM_100_TX; 294 break; 295 case IP1000PHY_LSR_SPEED_1000: 296 mii->mii_media_active |= IFM_1000_T; 297 break; 298 default: 299 mii->mii_media_active |= IFM_NONE; 300 return; 301 } 302 if ((stat & IP1000PHY_LSR_FULL_DUPLEX) != 0) 303 mii->mii_media_active |= IFM_FDX; 304 else 305 mii->mii_media_active |= IFM_HDX; 306 } else { 307 stat = PHY_READ(sc, STGE_PhyCtrl); 308 switch (PC_LinkSpeed(stat)) { 309 case PC_LinkSpeed_Down: 310 mii->mii_media_active |= IFM_NONE; 311 return; 312 case PC_LinkSpeed_10: 313 mii->mii_media_active |= IFM_10_T; 314 break; 315 case PC_LinkSpeed_100: 316 mii->mii_media_active |= IFM_100_TX; 317 break; 318 case PC_LinkSpeed_1000: 319 mii->mii_media_active |= IFM_1000_T; 320 break; 321 default: 322 mii->mii_media_active |= IFM_NONE; 323 return; 324 } 325 if ((stat & PC_PhyDuplexStatus) != 0) 326 mii->mii_media_active |= IFM_FDX; 327 else 328 mii->mii_media_active |= IFM_HDX; 329 } 330 331 if ((mii->mii_media_active & IFM_FDX) != 0) 332 mii->mii_media_active |= mii_phy_flowstatus(sc); 333 334 if ((mii->mii_media_active & IFM_1000_T) != 0) { 335 stat = PHY_READ(sc, IP1000PHY_MII_1000SR); 336 if ((stat & IP1000PHY_1000SR_MASTER) != 0) 337 mii->mii_media_active |= IFM_ETH_MASTER; 338 } 339 } 340 341 static int 342 ip1000phy_mii_phy_auto(struct mii_softc *sc, int media) 343 { 344 struct ip1000phy_softc *isc; 345 uint32_t reg; 346 347 isc = (struct ip1000phy_softc *)sc; 348 reg = 0; 349 if (isc->model == MII_MODEL_ICPLUS_IP1001) { 350 reg = PHY_READ(sc, IP1000PHY_MII_ANAR); 351 reg &= ~(IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE); 352 reg |= IP1000PHY_ANAR_NP; 353 } 354 reg |= IP1000PHY_ANAR_10T | IP1000PHY_ANAR_10T_FDX | 355 IP1000PHY_ANAR_100TX | IP1000PHY_ANAR_100TX_FDX; 356 if ((media & IFM_FLOW) != 0 || (sc->mii_flags & MIIF_FORCEPAUSE) != 0) 357 reg |= IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE; 358 PHY_WRITE(sc, IP1000PHY_MII_ANAR, reg | IP1000PHY_ANAR_CSMA); 359 360 reg = IP1000PHY_1000CR_1000T | IP1000PHY_1000CR_1000T_FDX; 361 reg |= IP1000PHY_1000CR_MASTER; 362 PHY_WRITE(sc, IP1000PHY_MII_1000CR, reg); 363 PHY_WRITE(sc, IP1000PHY_MII_BMCR, (IP1000PHY_BMCR_FDX | 364 IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_STARTNEG)); 365 366 return (EJUSTRETURN); 367 } 368 369 static void 370 ip1000phy_load_dspcode(struct mii_softc *sc) 371 { 372 373 PHY_WRITE(sc, 31, 0x0001); 374 PHY_WRITE(sc, 27, 0x01e0); 375 PHY_WRITE(sc, 31, 0x0002); 376 PHY_WRITE(sc, 27, 0xeb8e); 377 PHY_WRITE(sc, 31, 0x0000); 378 PHY_WRITE(sc, 30, 0x005e); 379 PHY_WRITE(sc, 9, 0x0700); 380 381 DELAY(50); 382 } 383 384 static void 385 ip1000phy_reset(struct mii_softc *sc) 386 { 387 uint32_t reg; 388 389 mii_phy_reset(sc); 390 391 /* clear autoneg/full-duplex as we don't want it after reset */ 392 reg = PHY_READ(sc, IP1000PHY_MII_BMCR); 393 reg &= ~(IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_FDX); 394 PHY_WRITE(sc, MII_BMCR, reg); 395 396 if ((sc->mii_flags & MIIF_PHYPRIV0) != 0) 397 ip1000phy_load_dspcode(sc); 398 }
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