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_var.h> 40 #include <net/if_media.h> 41 42 #include <dev/netif/mii_layer/mii.h> 43 #include <dev/netif/mii_layer/miivar.h> 44 #include <dev/netif/mii_layer/jmphyreg.h> 45 46 #include "miibus_if.h" 47 #include "miidevs.h" 48 49 static int jmphy_service(struct mii_softc *, struct mii_data *, int); 50 static void jmphy_status(struct mii_softc *); 51 static int jmphy_probe(device_t); 52 static int jmphy_attach(device_t); 53 static void jmphy_reset(struct mii_softc *); 54 static uint16_t jmphy_anar(struct ifmedia_entry *); 55 static int jmphy_auto(struct mii_softc *, struct ifmedia_entry *); 56 57 static device_method_t jmphy_methods[] = { 58 /* Device interface. */ 59 DEVMETHOD(device_probe, jmphy_probe), 60 DEVMETHOD(device_attach, jmphy_attach), 61 DEVMETHOD(device_detach, ukphy_detach), 62 DEVMETHOD(device_shutdown, bus_generic_shutdown), 63 { NULL, NULL } 64 }; 65 66 static devclass_t jmphy_devclass; 67 static driver_t jmphy_driver = { 68 "jmphy", 69 jmphy_methods, 70 sizeof(struct mii_softc) 71 }; 72 73 DRIVER_MODULE(jmphy, miibus, jmphy_driver, jmphy_devclass, NULL, NULL); 74 75 static const struct mii_phydesc jmphys[] = { 76 MII_PHYDESC(JMICRON, JMP202), 77 MII_PHYDESC(JMICRON, JMP211), 78 MII_PHYDESC_NULL 79 }; 80 81 static int 82 jmphy_probe(device_t dev) 83 { 84 struct mii_attach_args *ma = device_get_ivars(dev); 85 const struct mii_phydesc *mpd; 86 87 mpd = mii_phy_match(ma, jmphys); 88 if (mpd != NULL) { 89 device_set_desc(dev, mpd->mpd_name); 90 return 0; 91 } 92 return ENXIO; 93 } 94 95 static int 96 jmphy_attach(device_t dev) 97 { 98 struct mii_softc *sc; 99 struct mii_attach_args *ma; 100 struct mii_data *mii; 101 102 sc = device_get_softc(dev); 103 ma = device_get_ivars(dev); 104 105 mii_softc_init(sc, ma); 106 sc->mii_dev = device_get_parent(dev); 107 mii = device_get_softc(sc->mii_dev); 108 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 109 110 sc->mii_inst = mii->mii_instance; 111 sc->mii_service = jmphy_service; 112 sc->mii_reset = jmphy_reset; 113 sc->mii_pdata = mii; 114 115 mii->mii_instance++; 116 117 jmphy_reset(sc); 118 119 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 120 if (sc->mii_capabilities & BMSR_EXTSTAT) 121 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 122 123 device_printf(dev, " "); 124 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 125 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 126 kprintf("no media present"); 127 else 128 mii_phy_add_media(sc); 129 kprintf("\n"); 130 131 MIIBUS_MEDIAINIT(sc->mii_dev); 132 return(0); 133 } 134 135 static int 136 jmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 137 { 138 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 139 uint16_t bmcr; 140 141 switch (cmd) { 142 case MII_POLLSTAT: 143 /* 144 * If we're not polling our PHY instance, just return. 145 */ 146 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 147 return (0); 148 break; 149 150 case MII_MEDIACHG: 151 /* 152 * If the media indicates a different PHY instance, 153 * isolate ourselves. 154 */ 155 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 156 bmcr = PHY_READ(sc, MII_BMCR); 157 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO); 158 return (0); 159 } 160 161 /* 162 * If the interface is not up, don't do anything. 163 */ 164 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 165 break; 166 167 if (jmphy_auto(sc, ife) != EJUSTRETURN) 168 return (EINVAL); 169 break; 170 171 case MII_TICK: 172 /* 173 * If we're not currently selected, just return. 174 */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 176 return (0); 177 178 /* 179 * Is the interface even up? 180 */ 181 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 182 return (0); 183 184 /* 185 * Only used for autonegotiation. 186 */ 187 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 188 break; 189 190 /* Check for link. */ 191 if (PHY_READ(sc, JMPHY_SSR) & JMPHY_SSR_LINK_UP) { 192 sc->mii_ticks = 0; 193 break; 194 } 195 196 /* Announce link loss right after it happens. */ 197 if (sc->mii_ticks++ == 0) 198 break; 199 if (sc->mii_ticks <= sc->mii_anegticks) 200 return (0); 201 202 sc->mii_ticks = 0; 203 jmphy_auto(sc, ife); 204 break; 205 } 206 207 /* Update the media status. */ 208 jmphy_status(sc); 209 210 /* Callback if something changed. */ 211 mii_phy_update(sc, cmd); 212 return (0); 213 } 214 215 static void 216 jmphy_status(struct mii_softc *sc) 217 { 218 struct mii_data *mii = sc->mii_pdata; 219 int bmcr, ssr; 220 221 mii->mii_media_status = IFM_AVALID; 222 mii->mii_media_active = IFM_ETHER; 223 224 ssr = PHY_READ(sc, JMPHY_SSR); 225 if ((ssr & JMPHY_SSR_LINK_UP) != 0) 226 mii->mii_media_status |= IFM_ACTIVE; 227 228 bmcr = PHY_READ(sc, MII_BMCR); 229 if ((bmcr & BMCR_ISO) != 0) { 230 mii->mii_media_active |= IFM_NONE; 231 mii->mii_media_status = 0; 232 return; 233 } 234 235 if ((bmcr & BMCR_LOOP) != 0) 236 mii->mii_media_active |= IFM_LOOP; 237 238 if ((ssr & JMPHY_SSR_SPD_DPLX_RESOLVED) == 0) { 239 /* Erg, still trying, I guess... */ 240 mii->mii_media_active |= IFM_NONE; 241 return; 242 } 243 244 switch ((ssr & JMPHY_SSR_SPEED_MASK)) { 245 case JMPHY_SSR_SPEED_1000: 246 mii->mii_media_active |= IFM_1000_T; 247 /* 248 * jmphy(4) got a valid link so reset mii_ticks. 249 * Resetting mii_ticks is needed in order to 250 * detect link loss after auto-negotiation. 251 */ 252 sc->mii_ticks = 0; 253 break; 254 case JMPHY_SSR_SPEED_100: 255 mii->mii_media_active |= IFM_100_TX; 256 sc->mii_ticks = 0; 257 break; 258 case JMPHY_SSR_SPEED_10: 259 mii->mii_media_active |= IFM_10_T; 260 sc->mii_ticks = 0; 261 break; 262 default: 263 mii->mii_media_active |= IFM_NONE; 264 return; 265 } 266 267 if ((ssr & JMPHY_SSR_DUPLEX) != 0) 268 mii->mii_media_active |= IFM_FDX; 269 else 270 mii->mii_media_active |= IFM_HDX; 271 /* XXX Flow-control. */ 272 #ifdef notyet 273 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) { 274 if ((PHY_READ(sc, MII_100T2SR) & GTSR_MS_RES) != 0) 275 mii->mii_media_active |= IFM_ETH_MASTER; 276 } 277 #endif 278 } 279 280 static void 281 jmphy_reset(struct mii_softc *sc) 282 { 283 int i; 284 285 /* Disable sleep mode. */ 286 PHY_WRITE(sc, JMPHY_TMCTL, 287 PHY_READ(sc, JMPHY_TMCTL) & ~JMPHY_TMCTL_SLEEP_ENB); 288 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN); 289 290 for (i = 0; i < 1000; i++) { 291 DELAY(1); 292 if ((PHY_READ(sc, MII_BMCR) & BMCR_RESET) == 0) 293 break; 294 } 295 } 296 297 static uint16_t 298 jmphy_anar(struct ifmedia_entry *ife) 299 { 300 uint16_t anar; 301 302 anar = 0; 303 switch (IFM_SUBTYPE(ife->ifm_media)) { 304 case IFM_AUTO: 305 anar |= ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10; 306 break; 307 case IFM_1000_T: 308 break; 309 case IFM_100_TX: 310 anar |= ANAR_TX | ANAR_TX_FD; 311 break; 312 case IFM_10_T: 313 anar |= ANAR_10 | ANAR_10_FD; 314 break; 315 default: 316 break; 317 } 318 319 return (anar); 320 } 321 322 static int 323 jmphy_auto(struct mii_softc *sc, struct ifmedia_entry *ife) 324 { 325 uint16_t anar, bmcr, gig; 326 327 gig = 0; 328 bmcr = PHY_READ(sc, MII_BMCR); 329 switch (IFM_SUBTYPE(ife->ifm_media)) { 330 case IFM_AUTO: 331 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; 332 break; 333 case IFM_1000_T: 334 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; 335 break; 336 case IFM_100_TX: 337 case IFM_10_T: 338 break; 339 case IFM_NONE: 340 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO | BMCR_PDOWN); 341 return (EJUSTRETURN); 342 default: 343 return (EINVAL); 344 } 345 346 if ((ife->ifm_media & IFM_LOOP) != 0) 347 bmcr |= BMCR_LOOP; 348 349 anar = jmphy_anar(ife); 350 /* XXX Always advertise pause capability. */ 351 anar |= (3 << 10); 352 353 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) { 354 #ifdef notyet 355 struct mii_data *mii; 356 357 mii = sc->mii_pdata; 358 if ((mii->mii_media.ifm_media & IFM_ETH_MASTER) != 0) 359 gig |= GTCR_MAN_MS | GTCR_MAN_ADV; 360 #endif 361 PHY_WRITE(sc, MII_100T2CR, gig); 362 } 363 PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA); 364 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_AUTOEN | BMCR_STARTNEG); 365 366 return (EJUSTRETURN); 367 } 368