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/jmphy.c
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1 /*- 2 * Copyright (c) 2008, 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 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD: releng/8.4/sys/dev/mii/jmphy.c 230718 2012-01-29 01:35:14Z marius $"); 30 31 /* 32 * Driver for the JMicron JMP211 10/100/1000, JMP202 10/100 PHY. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/module.h> 39 #include <sys/socket.h> 40 #include <sys/bus.h> 41 42 #include <net/if.h> 43 #include <net/if_media.h> 44 45 #include <dev/mii/mii.h> 46 #include <dev/mii/miivar.h> 47 #include "miidevs.h" 48 49 #include <dev/mii/jmphyreg.h> 50 51 #include "miibus_if.h" 52 53 static int jmphy_probe(device_t); 54 static int jmphy_attach(device_t); 55 static void jmphy_reset(struct mii_softc *); 56 static uint16_t jmphy_anar(struct ifmedia_entry *); 57 static int jmphy_setmedia(struct mii_softc *, struct ifmedia_entry *); 58 59 struct jmphy_softc { 60 struct mii_softc mii_sc; 61 int mii_oui; 62 int mii_model; 63 int mii_rev; 64 }; 65 66 static device_method_t jmphy_methods[] = { 67 /* Device interface. */ 68 DEVMETHOD(device_probe, jmphy_probe), 69 DEVMETHOD(device_attach, jmphy_attach), 70 DEVMETHOD(device_detach, mii_phy_detach), 71 DEVMETHOD(device_shutdown, bus_generic_shutdown), 72 DEVMETHOD_END 73 }; 74 75 static devclass_t jmphy_devclass; 76 static driver_t jmphy_driver = { 77 "jmphy", 78 jmphy_methods, 79 sizeof(struct jmphy_softc) 80 }; 81 82 DRIVER_MODULE(jmphy, miibus, jmphy_driver, jmphy_devclass, 0, 0); 83 84 static int jmphy_service(struct mii_softc *, struct mii_data *, int); 85 static void jmphy_status(struct mii_softc *); 86 87 static const struct mii_phydesc jmphys[] = { 88 MII_PHY_DESC(JMICRON, JMP202), 89 MII_PHY_DESC(JMICRON, JMP211), 90 MII_PHY_END 91 }; 92 93 static int 94 jmphy_probe(device_t dev) 95 { 96 97 return (mii_phy_dev_probe(dev, jmphys, BUS_PROBE_DEFAULT)); 98 } 99 100 static int 101 jmphy_attach(device_t dev) 102 { 103 struct jmphy_softc *jsc; 104 struct mii_softc *sc; 105 struct mii_attach_args *ma; 106 struct mii_data *mii; 107 struct ifnet *ifp; 108 109 jsc = device_get_softc(dev); 110 sc = &jsc->mii_sc; 111 ma = device_get_ivars(dev); 112 sc->mii_dev = device_get_parent(dev); 113 mii = ma->mii_data; 114 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 115 116 sc->mii_flags = miibus_get_flags(dev); 117 sc->mii_inst = mii->mii_instance++; 118 sc->mii_phy = ma->mii_phyno; 119 sc->mii_service = jmphy_service; 120 sc->mii_pdata = mii; 121 122 ifp = sc->mii_pdata->mii_ifp; 123 if (strcmp(ifp->if_dname, "jme") == 0 && 124 (sc->mii_flags & MIIF_MACPRIV0) != 0) 125 sc->mii_flags |= MIIF_PHYPRIV0; 126 jsc->mii_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 127 jsc->mii_model = MII_MODEL(ma->mii_id2); 128 jsc->mii_rev = MII_REV(ma->mii_id2); 129 if (bootverbose) 130 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n", 131 jsc->mii_oui, jsc->mii_model, jsc->mii_rev); 132 133 jmphy_reset(sc); 134 135 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 136 if (sc->mii_capabilities & BMSR_EXTSTAT) 137 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 138 device_printf(dev, " "); 139 mii_phy_add_media(sc); 140 printf("\n"); 141 142 MIIBUS_MEDIAINIT(sc->mii_dev); 143 return (0); 144 } 145 146 static int 147 jmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 148 { 149 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 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 if (jmphy_setmedia(sc, ife) != EJUSTRETURN) 163 return (EINVAL); 164 break; 165 166 case MII_TICK: 167 /* 168 * Is the interface even up? 169 */ 170 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 171 return (0); 172 173 /* 174 * Only used for autonegotiation. 175 */ 176 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { 177 sc->mii_ticks = 0; 178 break; 179 } 180 181 /* Check for link. */ 182 if ((PHY_READ(sc, JMPHY_SSR) & JMPHY_SSR_LINK_UP) != 0) { 183 sc->mii_ticks = 0; 184 break; 185 } 186 187 /* Announce link loss right after it happens. */ 188 if (sc->mii_ticks++ == 0) 189 break; 190 if (sc->mii_ticks <= sc->mii_anegticks) 191 return (0); 192 193 sc->mii_ticks = 0; 194 (void)jmphy_setmedia(sc, ife); 195 break; 196 } 197 198 /* Update the media status. */ 199 jmphy_status(sc); 200 201 /* Callback if something changed. */ 202 mii_phy_update(sc, cmd); 203 return (0); 204 } 205 206 static void 207 jmphy_status(struct mii_softc *sc) 208 { 209 struct mii_data *mii = sc->mii_pdata; 210 int bmcr, ssr; 211 212 mii->mii_media_status = IFM_AVALID; 213 mii->mii_media_active = IFM_ETHER; 214 215 ssr = PHY_READ(sc, JMPHY_SSR); 216 if ((ssr & JMPHY_SSR_LINK_UP) != 0) 217 mii->mii_media_status |= IFM_ACTIVE; 218 219 bmcr = PHY_READ(sc, MII_BMCR); 220 if ((bmcr & BMCR_ISO) != 0) { 221 mii->mii_media_active |= IFM_NONE; 222 mii->mii_media_status = 0; 223 return; 224 } 225 226 if ((bmcr & BMCR_LOOP) != 0) 227 mii->mii_media_active |= IFM_LOOP; 228 229 if ((ssr & JMPHY_SSR_SPD_DPLX_RESOLVED) == 0) { 230 /* Erg, still trying, I guess... */ 231 mii->mii_media_active |= IFM_NONE; 232 return; 233 } 234 235 switch ((ssr & JMPHY_SSR_SPEED_MASK)) { 236 case JMPHY_SSR_SPEED_1000: 237 mii->mii_media_active |= IFM_1000_T; 238 /* 239 * jmphy(4) got a valid link so reset mii_ticks. 240 * Resetting mii_ticks is needed in order to 241 * detect link loss after auto-negotiation. 242 */ 243 sc->mii_ticks = 0; 244 break; 245 case JMPHY_SSR_SPEED_100: 246 mii->mii_media_active |= IFM_100_TX; 247 sc->mii_ticks = 0; 248 break; 249 case JMPHY_SSR_SPEED_10: 250 mii->mii_media_active |= IFM_10_T; 251 sc->mii_ticks = 0; 252 break; 253 default: 254 mii->mii_media_active |= IFM_NONE; 255 return; 256 } 257 258 if ((ssr & JMPHY_SSR_DUPLEX) != 0) 259 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc); 260 else 261 mii->mii_media_active |= IFM_HDX; 262 263 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) { 264 if ((PHY_READ(sc, MII_100T2SR) & GTSR_MS_RES) != 0) 265 mii->mii_media_active |= IFM_ETH_MASTER; 266 } 267 } 268 269 static void 270 jmphy_reset(struct mii_softc *sc) 271 { 272 uint16_t t2cr, val; 273 int i; 274 275 /* Disable sleep mode. */ 276 PHY_WRITE(sc, JMPHY_TMCTL, 277 PHY_READ(sc, JMPHY_TMCTL) & ~JMPHY_TMCTL_SLEEP_ENB); 278 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN); 279 280 for (i = 0; i < 1000; i++) { 281 DELAY(1); 282 if ((PHY_READ(sc, MII_BMCR) & BMCR_RESET) == 0) 283 break; 284 } 285 /* Perform vendor recommended PHY calibration. */ 286 if ((sc->mii_flags & MIIF_PHYPRIV0) != 0) { 287 /* Select PHY test mode 1. */ 288 t2cr = PHY_READ(sc, MII_100T2CR); 289 t2cr &= ~GTCR_TEST_MASK; 290 t2cr |= 0x2000; 291 PHY_WRITE(sc, MII_100T2CR, t2cr); 292 /* Apply calibration patch. */ 293 PHY_WRITE(sc, JMPHY_SPEC_ADDR, JMPHY_SPEC_ADDR_READ | 294 JMPHY_EXT_COMM_2); 295 val = PHY_READ(sc, JMPHY_SPEC_DATA); 296 val &= ~0x0002; 297 val |= 0x0010 | 0x0001; 298 PHY_WRITE(sc, JMPHY_SPEC_DATA, val); 299 PHY_WRITE(sc, JMPHY_SPEC_ADDR, JMPHY_SPEC_ADDR_WRITE | 300 JMPHY_EXT_COMM_2); 301 302 /* XXX 20ms to complete recalibration. */ 303 DELAY(20 * 1000); 304 305 PHY_READ(sc, MII_100T2CR); 306 PHY_WRITE(sc, JMPHY_SPEC_ADDR, JMPHY_SPEC_ADDR_READ | 307 JMPHY_EXT_COMM_2); 308 val = PHY_READ(sc, JMPHY_SPEC_DATA); 309 val &= ~(0x0001 | 0x0002 | 0x0010); 310 PHY_WRITE(sc, JMPHY_SPEC_DATA, val); 311 PHY_WRITE(sc, JMPHY_SPEC_ADDR, JMPHY_SPEC_ADDR_WRITE | 312 JMPHY_EXT_COMM_2); 313 /* Disable PHY test mode. */ 314 PHY_READ(sc, MII_100T2CR); 315 t2cr &= ~GTCR_TEST_MASK; 316 PHY_WRITE(sc, MII_100T2CR, t2cr); 317 } 318 } 319 320 static uint16_t 321 jmphy_anar(struct ifmedia_entry *ife) 322 { 323 uint16_t anar; 324 325 anar = 0; 326 switch (IFM_SUBTYPE(ife->ifm_media)) { 327 case IFM_AUTO: 328 anar |= ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10; 329 break; 330 case IFM_1000_T: 331 break; 332 case IFM_100_TX: 333 anar |= ANAR_TX | ANAR_TX_FD; 334 break; 335 case IFM_10_T: 336 anar |= ANAR_10 | ANAR_10_FD; 337 break; 338 default: 339 break; 340 } 341 342 return (anar); 343 } 344 345 static int 346 jmphy_setmedia(struct mii_softc *sc, struct ifmedia_entry *ife) 347 { 348 uint16_t anar, bmcr, gig; 349 350 gig = 0; 351 bmcr = PHY_READ(sc, MII_BMCR); 352 switch (IFM_SUBTYPE(ife->ifm_media)) { 353 case IFM_AUTO: 354 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; 355 break; 356 case IFM_1000_T: 357 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; 358 break; 359 case IFM_100_TX: 360 case IFM_10_T: 361 break; 362 case IFM_NONE: 363 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO | BMCR_PDOWN); 364 return (EJUSTRETURN); 365 default: 366 return (EINVAL); 367 } 368 369 if ((ife->ifm_media & IFM_LOOP) != 0) 370 bmcr |= BMCR_LOOP; 371 372 anar = jmphy_anar(ife); 373 if ((IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO || 374 (ife->ifm_media & IFM_FDX) != 0) && 375 ((ife->ifm_media & IFM_FLOW) != 0 || 376 (sc->mii_flags & MIIF_FORCEPAUSE) != 0)) 377 anar |= ANAR_PAUSE_TOWARDS; 378 379 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) { 380 if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) { 381 gig |= GTCR_MAN_MS; 382 if ((ife->ifm_media & IFM_ETH_MASTER) != 0) 383 gig |= GTCR_ADV_MS; 384 } 385 PHY_WRITE(sc, MII_100T2CR, gig); 386 } 387 PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA); 388 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_AUTOEN | BMCR_STARTNEG); 389 390 return (EJUSTRETURN); 391 }
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