jmphy.c revision 213364
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: head/sys/dev/mii/jmphy.c 213364 2010-10-02 18:53:12Z 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 53static int jmphy_probe(device_t); 54static int jmphy_attach(device_t); 55static void jmphy_reset(struct mii_softc *); 56static uint16_t jmphy_anar(struct ifmedia_entry *); 57static int jmphy_auto(struct mii_softc *, struct ifmedia_entry *); 58 59struct jmphy_softc { 60 struct mii_softc mii_sc; 61 int mii_oui; 62 int mii_model; 63 int mii_rev; 64}; 65 66static 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 { NULL, NULL } 73}; 74 75static devclass_t jmphy_devclass; 76static driver_t jmphy_driver = { 77 "jmphy", 78 jmphy_methods, 79 sizeof(struct jmphy_softc) 80}; 81 82DRIVER_MODULE(jmphy, miibus, jmphy_driver, jmphy_devclass, 0, 0); 83 84static int jmphy_service(struct mii_softc *, struct mii_data *, int); 85static void jmphy_status(struct mii_softc *); 86 87static const struct mii_phydesc jmphys[] = { 88 MII_PHY_DESC(JMICRON, JMP202), 89 MII_PHY_DESC(JMICRON, JMP211), 90 MII_PHY_END 91}; 92 93static int 94jmphy_probe(device_t dev) 95{ 96 97 return (mii_phy_dev_probe(dev, jmphys, BUS_PROBE_DEFAULT)); 98} 99 100static int 101jmphy_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; 107 108 jsc = device_get_softc(dev); 109 sc = &jsc->mii_sc; 110 ma = device_get_ivars(dev); 111 sc->mii_dev = device_get_parent(dev); 112 mii = ma->mii_data; 113 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 114 115 sc->mii_inst = mii->mii_instance++; 116 sc->mii_phy = ma->mii_phyno; 117 sc->mii_service = jmphy_service; 118 sc->mii_pdata = mii; 119 120 jsc->mii_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 121 jsc->mii_model = MII_MODEL(ma->mii_id2); 122 jsc->mii_rev = MII_REV(ma->mii_id2); 123 if (bootverbose) 124 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n", 125 jsc->mii_oui, jsc->mii_model, jsc->mii_rev); 126 127 jmphy_reset(sc); 128 129 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 130 if (sc->mii_capabilities & BMSR_EXTSTAT) 131 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 132 device_printf(dev, " "); 133 mii_phy_add_media(sc); 134 printf("\n"); 135 136 MIIBUS_MEDIAINIT(sc->mii_dev); 137 return (0); 138} 139 140static int 141jmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 142{ 143 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 144 145 switch (cmd) { 146 case MII_POLLSTAT: 147 break; 148 149 case MII_MEDIACHG: 150 /* 151 * If the interface is not up, don't do anything. 152 */ 153 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 154 break; 155 156 if (jmphy_auto(sc, ife) != EJUSTRETURN) 157 return (EINVAL); 158 break; 159 160 case MII_TICK: 161 /* 162 * Is the interface even up? 163 */ 164 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 165 return (0); 166 167 /* 168 * Only used for autonegotiation. 169 */ 170 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { 171 sc->mii_ticks = 0; 172 break; 173 } 174 175 /* Check for link. */ 176 if ((PHY_READ(sc, JMPHY_SSR) & JMPHY_SSR_LINK_UP) != 0) { 177 sc->mii_ticks = 0; 178 break; 179 } 180 181 /* Announce link loss right after it happens. */ 182 if (sc->mii_ticks++ == 0) 183 break; 184 if (sc->mii_ticks <= sc->mii_anegticks) 185 return (0); 186 187 sc->mii_ticks = 0; 188 jmphy_auto(sc, ife); 189 break; 190 } 191 192 /* Update the media status. */ 193 jmphy_status(sc); 194 195 /* Callback if something changed. */ 196 mii_phy_update(sc, cmd); 197 return (0); 198} 199 200static void 201jmphy_status(struct mii_softc *sc) 202{ 203 struct mii_data *mii = sc->mii_pdata; 204 int bmcr, ssr; 205 206 mii->mii_media_status = IFM_AVALID; 207 mii->mii_media_active = IFM_ETHER; 208 209 ssr = PHY_READ(sc, JMPHY_SSR); 210 if ((ssr & JMPHY_SSR_LINK_UP) != 0) 211 mii->mii_media_status |= IFM_ACTIVE; 212 213 bmcr = PHY_READ(sc, MII_BMCR); 214 if ((bmcr & BMCR_ISO) != 0) { 215 mii->mii_media_active |= IFM_NONE; 216 mii->mii_media_status = 0; 217 return; 218 } 219 220 if ((bmcr & BMCR_LOOP) != 0) 221 mii->mii_media_active |= IFM_LOOP; 222 223 if ((ssr & JMPHY_SSR_SPD_DPLX_RESOLVED) == 0) { 224 /* Erg, still trying, I guess... */ 225 mii->mii_media_active |= IFM_NONE; 226 return; 227 } 228 229 switch ((ssr & JMPHY_SSR_SPEED_MASK)) { 230 case JMPHY_SSR_SPEED_1000: 231 mii->mii_media_active |= IFM_1000_T; 232 /* 233 * jmphy(4) got a valid link so reset mii_ticks. 234 * Resetting mii_ticks is needed in order to 235 * detect link loss after auto-negotiation. 236 */ 237 sc->mii_ticks = 0; 238 break; 239 case JMPHY_SSR_SPEED_100: 240 mii->mii_media_active |= IFM_100_TX; 241 sc->mii_ticks = 0; 242 break; 243 case JMPHY_SSR_SPEED_10: 244 mii->mii_media_active |= IFM_10_T; 245 sc->mii_ticks = 0; 246 break; 247 default: 248 mii->mii_media_active |= IFM_NONE; 249 return; 250 } 251 252 if ((ssr & JMPHY_SSR_DUPLEX) != 0) 253 mii->mii_media_active |= IFM_FDX; 254 else 255 mii->mii_media_active |= IFM_HDX; 256 /* XXX Flow-control. */ 257#ifdef notyet 258 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) { 259 if ((PHY_READ(sc, MII_100T2SR) & GTSR_MS_RES) != 0) 260 mii->mii_media_active |= IFM_ETH_MASTER; 261 } 262#endif 263} 264 265static void 266jmphy_reset(struct mii_softc *sc) 267{ 268 struct jmphy_softc *jsc; 269 int i; 270 271 jsc = (struct jmphy_softc *)sc; 272 273 /* Disable sleep mode. */ 274 PHY_WRITE(sc, JMPHY_TMCTL, 275 PHY_READ(sc, JMPHY_TMCTL) & ~JMPHY_TMCTL_SLEEP_ENB); 276 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN); 277 278 for (i = 0; i < 1000; i++) { 279 DELAY(1); 280 if ((PHY_READ(sc, MII_BMCR) & BMCR_RESET) == 0) 281 break; 282 } 283} 284 285static uint16_t 286jmphy_anar(struct ifmedia_entry *ife) 287{ 288 uint16_t anar; 289 290 anar = 0; 291 switch (IFM_SUBTYPE(ife->ifm_media)) { 292 case IFM_AUTO: 293 anar |= ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10; 294 break; 295 case IFM_1000_T: 296 break; 297 case IFM_100_TX: 298 anar |= ANAR_TX | ANAR_TX_FD; 299 break; 300 case IFM_10_T: 301 anar |= ANAR_10 | ANAR_10_FD; 302 break; 303 default: 304 break; 305 } 306 307 return (anar); 308} 309 310static int 311jmphy_auto(struct mii_softc *sc, struct ifmedia_entry *ife) 312{ 313 uint16_t anar, bmcr, gig; 314 315 gig = 0; 316 bmcr = PHY_READ(sc, MII_BMCR); 317 switch (IFM_SUBTYPE(ife->ifm_media)) { 318 case IFM_AUTO: 319 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; 320 break; 321 case IFM_1000_T: 322 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; 323 break; 324 case IFM_100_TX: 325 case IFM_10_T: 326 break; 327 case IFM_NONE: 328 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO | BMCR_PDOWN); 329 return (EJUSTRETURN); 330 default: 331 return (EINVAL); 332 } 333 334 if ((ife->ifm_media & IFM_LOOP) != 0) 335 bmcr |= BMCR_LOOP; 336 337 anar = jmphy_anar(ife); 338 /* XXX Always advertise pause capability. */ 339 anar |= (3 << 10); 340 341 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) { 342#ifdef notyet 343 struct mii_data *mii; 344 345 mii = sc->mii_pdata; 346 if ((mii->mii_media.ifm_media & IFM_ETH_MASTER) != 0) 347 gig |= GTCR_MAN_MS | GTCR_MAN_ADV; 348#endif 349 PHY_WRITE(sc, MII_100T2CR, gig); 350 } 351 PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA); 352 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_AUTOEN | BMCR_STARTNEG); 353 354 return (EJUSTRETURN); 355} 356