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 * $FreeBSD: src/sys/dev/mii/jmphy.c,v 1.1 2008/05/27 01:16:40 yongari Exp $ 28 */ 29 30 /* 31 * Driver for the JMicron JMP211 10/100/1000, JMP202 10/100 PHY. 32 */ 33 34 #include <sys/param.h> 35 #include <sys/bus.h> 36 #include <sys/kernel.h> 37 38 #include <net/if.h> 39 #include <net/if_media.h> 40 41 #include <dev/netif/mii_layer/mii.h> 42 #include <dev/netif/mii_layer/miivar.h> 43 #include <dev/netif/mii_layer/jmphyreg.h> 44 45 #include "miibus_if.h" 46 #include "miidevs.h" 47 48 static int jmphy_service(struct mii_softc *, struct mii_data *, int); 49 static void jmphy_status(struct mii_softc *); 50 static int jmphy_probe(device_t); 51 static int jmphy_attach(device_t); 52 static void jmphy_reset(struct mii_softc *); 53 static uint16_t jmphy_anar(struct ifmedia_entry *); 54 static int jmphy_auto(struct mii_softc *, struct ifmedia_entry *); 55 56 static device_method_t jmphy_methods[] = { 57 /* Device interface. */ 58 DEVMETHOD(device_probe, jmphy_probe), 59 DEVMETHOD(device_attach, jmphy_attach), 60 DEVMETHOD(device_detach, ukphy_detach), 61 DEVMETHOD(device_shutdown, bus_generic_shutdown), 62 { NULL, NULL } 63 }; 64 65 static devclass_t jmphy_devclass; 66 static driver_t jmphy_driver = { 67 "jmphy", 68 jmphy_methods, 69 sizeof(struct mii_softc) 70 }; 71 72 DRIVER_MODULE(jmphy, miibus, jmphy_driver, jmphy_devclass, NULL, NULL); 73 74 static const struct mii_phydesc jmphys[] = { 75 MII_PHYDESC(JMICRON, JMP202), 76 MII_PHYDESC(JMICRON, JMP211), 77 MII_PHYDESC_NULL 78 }; 79 80 static int 81 jmphy_probe(device_t dev) 82 { 83 struct mii_attach_args *ma = device_get_ivars(dev); 84 const struct mii_phydesc *mpd; 85 86 mpd = mii_phy_match(ma, jmphys); 87 if (mpd != NULL) { 88 device_set_desc(dev, mpd->mpd_name); 89 return 0; 90 } 91 return ENXIO; 92 } 93 94 static int 95 jmphy_attach(device_t dev) 96 { 97 struct mii_softc *sc; 98 struct mii_attach_args *ma; 99 struct mii_data *mii; 100 101 sc = device_get_softc(dev); 102 ma = device_get_ivars(dev); 103 104 mii_softc_init(sc, ma); 105 sc->mii_dev = device_get_parent(dev); 106 mii = device_get_softc(sc->mii_dev); 107 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 108 109 sc->mii_inst = mii->mii_instance; 110 sc->mii_service = jmphy_service; 111 sc->mii_reset = jmphy_reset; 112 sc->mii_pdata = mii; 113 114 mii->mii_instance++; 115 116 jmphy_reset(sc); 117 118 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 119 if (sc->mii_capabilities & BMSR_EXTSTAT) 120 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 121 122 device_printf(dev, " "); 123 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 124 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 125 kprintf("no media present"); 126 else 127 mii_phy_add_media(sc); 128 kprintf("\n"); 129 130 MIIBUS_MEDIAINIT(sc->mii_dev); 131 return(0); 132 } 133 134 static int 135 jmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 136 { 137 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 138 uint16_t bmcr; 139 140 switch (cmd) { 141 case MII_POLLSTAT: 142 /* 143 * If we're not polling our PHY instance, just return. 144 */ 145 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 146 return (0); 147 break; 148 149 case MII_MEDIACHG: 150 /* 151 * If the media indicates a different PHY instance, 152 * isolate ourselves. 153 */ 154 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 155 bmcr = PHY_READ(sc, MII_BMCR); 156 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO); 157 return (0); 158 } 159 160 /* 161 * If the interface is not up, don't do anything. 162 */ 163 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 164 break; 165 166 if (jmphy_auto(sc, ife) != EJUSTRETURN) 167 return (EINVAL); 168 break; 169 170 case MII_TICK: 171 /* 172 * If we're not currently selected, just return. 173 */ 174 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 175 return (0); 176 177 /* 178 * Is the interface even up? 179 */ 180 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 181 return (0); 182 183 /* 184 * Only used for autonegotiation. 185 */ 186 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 187 break; 188 189 /* Check for link. */ 190 if (PHY_READ(sc, JMPHY_SSR) & JMPHY_SSR_LINK_UP) { 191 sc->mii_ticks = 0; 192 break; 193 } 194 195 /* Announce link loss right after it happens. */ 196 if (sc->mii_ticks++ == 0) 197 break; 198 if (sc->mii_ticks <= sc->mii_anegticks) 199 return (0); 200 201 sc->mii_ticks = 0; 202 jmphy_auto(sc, ife); 203 break; 204 } 205 206 /* Update the media status. */ 207 jmphy_status(sc); 208 209 /* Callback if something changed. */ 210 mii_phy_update(sc, cmd); 211 return (0); 212 } 213 214 static void 215 jmphy_status(struct mii_softc *sc) 216 { 217 struct mii_data *mii = sc->mii_pdata; 218 int bmcr, ssr; 219 220 mii->mii_media_status = IFM_AVALID; 221 mii->mii_media_active = IFM_ETHER; 222 223 ssr = PHY_READ(sc, JMPHY_SSR); 224 if ((ssr & JMPHY_SSR_LINK_UP) != 0) 225 mii->mii_media_status |= IFM_ACTIVE; 226 227 bmcr = PHY_READ(sc, MII_BMCR); 228 if ((bmcr & BMCR_ISO) != 0) { 229 mii->mii_media_active |= IFM_NONE; 230 mii->mii_media_status = 0; 231 return; 232 } 233 234 if ((bmcr & BMCR_LOOP) != 0) 235 mii->mii_media_active |= IFM_LOOP; 236 237 if ((ssr & JMPHY_SSR_SPD_DPLX_RESOLVED) == 0) { 238 /* Erg, still trying, I guess... */ 239 mii->mii_media_active |= IFM_NONE; 240 return; 241 } 242 243 switch ((ssr & JMPHY_SSR_SPEED_MASK)) { 244 case JMPHY_SSR_SPEED_1000: 245 mii->mii_media_active |= IFM_1000_T; 246 /* 247 * jmphy(4) got a valid link so reset mii_ticks. 248 * Resetting mii_ticks is needed in order to 249 * detect link loss after auto-negotiation. 250 */ 251 sc->mii_ticks = 0; 252 break; 253 case JMPHY_SSR_SPEED_100: 254 mii->mii_media_active |= IFM_100_TX; 255 sc->mii_ticks = 0; 256 break; 257 case JMPHY_SSR_SPEED_10: 258 mii->mii_media_active |= IFM_10_T; 259 sc->mii_ticks = 0; 260 break; 261 default: 262 mii->mii_media_active |= IFM_NONE; 263 return; 264 } 265 266 if ((ssr & JMPHY_SSR_DUPLEX) != 0) 267 mii->mii_media_active |= IFM_FDX; 268 else 269 mii->mii_media_active |= IFM_HDX; 270 /* XXX Flow-control. */ 271 #ifdef notyet 272 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) { 273 if ((PHY_READ(sc, MII_100T2SR) & GTSR_MS_RES) != 0) 274 mii->mii_media_active |= IFM_ETH_MASTER; 275 } 276 #endif 277 } 278 279 static void 280 jmphy_reset(struct mii_softc *sc) 281 { 282 int i; 283 284 /* Disable sleep mode. */ 285 PHY_WRITE(sc, JMPHY_TMCTL, 286 PHY_READ(sc, JMPHY_TMCTL) & ~JMPHY_TMCTL_SLEEP_ENB); 287 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN); 288 289 for (i = 0; i < 1000; i++) { 290 DELAY(1); 291 if ((PHY_READ(sc, MII_BMCR) & BMCR_RESET) == 0) 292 break; 293 } 294 } 295 296 static uint16_t 297 jmphy_anar(struct ifmedia_entry *ife) 298 { 299 uint16_t anar; 300 301 anar = 0; 302 switch (IFM_SUBTYPE(ife->ifm_media)) { 303 case IFM_AUTO: 304 anar |= ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10; 305 break; 306 case IFM_1000_T: 307 break; 308 case IFM_100_TX: 309 anar |= ANAR_TX | ANAR_TX_FD; 310 break; 311 case IFM_10_T: 312 anar |= ANAR_10 | ANAR_10_FD; 313 break; 314 default: 315 break; 316 } 317 318 return (anar); 319 } 320 321 static int 322 jmphy_auto(struct mii_softc *sc, struct ifmedia_entry *ife) 323 { 324 uint16_t anar, bmcr, gig; 325 326 gig = 0; 327 bmcr = PHY_READ(sc, MII_BMCR); 328 switch (IFM_SUBTYPE(ife->ifm_media)) { 329 case IFM_AUTO: 330 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; 331 break; 332 case IFM_1000_T: 333 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; 334 break; 335 case IFM_100_TX: 336 case IFM_10_T: 337 break; 338 case IFM_NONE: 339 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO | BMCR_PDOWN); 340 return (EJUSTRETURN); 341 default: 342 return (EINVAL); 343 } 344 345 if ((ife->ifm_media & IFM_LOOP) != 0) 346 bmcr |= BMCR_LOOP; 347 348 anar = jmphy_anar(ife); 349 /* XXX Always advertise pause capability. */ 350 anar |= (3 << 10); 351 352 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) { 353 #ifdef notyet 354 struct mii_data *mii; 355 356 mii = sc->mii_pdata; 357 if ((mii->mii_media.ifm_media & IFM_ETH_MASTER) != 0) 358 gig |= GTCR_MAN_MS | GTCR_MAN_ADV; 359 #endif 360 PHY_WRITE(sc, MII_100T2CR, gig); 361 } 362 PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA); 363 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_AUTOEN | BMCR_STARTNEG); 364 365 return (EJUSTRETURN); 366 } 367