jmphy.c revision 215298
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 215298 2010-11-14 13:31:01Z 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_setmedia(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_flags = miibus_get_flags(dev); 116 sc->mii_inst = mii->mii_instance++; 117 sc->mii_phy = ma->mii_phyno; 118 sc->mii_service = jmphy_service; 119 sc->mii_pdata = mii; 120 121 jsc->mii_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 122 jsc->mii_model = MII_MODEL(ma->mii_id2); 123 jsc->mii_rev = MII_REV(ma->mii_id2); 124 if (bootverbose) 125 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n", 126 jsc->mii_oui, jsc->mii_model, jsc->mii_rev); 127 128 jmphy_reset(sc); 129 130 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 131 if (sc->mii_capabilities & BMSR_EXTSTAT) 132 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 133 device_printf(dev, " "); 134 mii_phy_add_media(sc); 135 printf("\n"); 136 137 MIIBUS_MEDIAINIT(sc->mii_dev); 138 return (0); 139} 140 141static int 142jmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 143{ 144 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 145 146 switch (cmd) { 147 case MII_POLLSTAT: 148 break; 149 150 case MII_MEDIACHG: 151 /* 152 * If the interface is not up, don't do anything. 153 */ 154 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 155 break; 156 157 if (jmphy_setmedia(sc, ife) != EJUSTRETURN) 158 return (EINVAL); 159 break; 160 161 case MII_TICK: 162 /* 163 * Is the interface even up? 164 */ 165 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 166 return (0); 167 168 /* 169 * Only used for autonegotiation. 170 */ 171 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { 172 sc->mii_ticks = 0; 173 break; 174 } 175 176 /* Check for link. */ 177 if ((PHY_READ(sc, JMPHY_SSR) & JMPHY_SSR_LINK_UP) != 0) { 178 sc->mii_ticks = 0; 179 break; 180 } 181 182 /* Announce link loss right after it happens. */ 183 if (sc->mii_ticks++ == 0) 184 break; 185 if (sc->mii_ticks <= sc->mii_anegticks) 186 return (0); 187 188 sc->mii_ticks = 0; 189 (void)jmphy_setmedia(sc, ife); 190 break; 191 } 192 193 /* Update the media status. */ 194 jmphy_status(sc); 195 196 /* Callback if something changed. */ 197 mii_phy_update(sc, cmd); 198 return (0); 199} 200 201static void 202jmphy_status(struct mii_softc *sc) 203{ 204 struct mii_data *mii = sc->mii_pdata; 205 int bmcr, ssr; 206 207 mii->mii_media_status = IFM_AVALID; 208 mii->mii_media_active = IFM_ETHER; 209 210 ssr = PHY_READ(sc, JMPHY_SSR); 211 if ((ssr & JMPHY_SSR_LINK_UP) != 0) 212 mii->mii_media_status |= IFM_ACTIVE; 213 214 bmcr = PHY_READ(sc, MII_BMCR); 215 if ((bmcr & BMCR_ISO) != 0) { 216 mii->mii_media_active |= IFM_NONE; 217 mii->mii_media_status = 0; 218 return; 219 } 220 221 if ((bmcr & BMCR_LOOP) != 0) 222 mii->mii_media_active |= IFM_LOOP; 223 224 if ((ssr & JMPHY_SSR_SPD_DPLX_RESOLVED) == 0) { 225 /* Erg, still trying, I guess... */ 226 mii->mii_media_active |= IFM_NONE; 227 return; 228 } 229 230 switch ((ssr & JMPHY_SSR_SPEED_MASK)) { 231 case JMPHY_SSR_SPEED_1000: 232 mii->mii_media_active |= IFM_1000_T; 233 /* 234 * jmphy(4) got a valid link so reset mii_ticks. 235 * Resetting mii_ticks is needed in order to 236 * detect link loss after auto-negotiation. 237 */ 238 sc->mii_ticks = 0; 239 break; 240 case JMPHY_SSR_SPEED_100: 241 mii->mii_media_active |= IFM_100_TX; 242 sc->mii_ticks = 0; 243 break; 244 case JMPHY_SSR_SPEED_10: 245 mii->mii_media_active |= IFM_10_T; 246 sc->mii_ticks = 0; 247 break; 248 default: 249 mii->mii_media_active |= IFM_NONE; 250 return; 251 } 252 253 if ((ssr & JMPHY_SSR_DUPLEX) != 0) 254 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc); 255 else 256 mii->mii_media_active |= IFM_HDX; 257 258 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} 263 264static void 265jmphy_reset(struct mii_softc *sc) 266{ 267 struct jmphy_softc *jsc; 268 int i; 269 270 jsc = (struct jmphy_softc *)sc; 271 272 /* Disable sleep mode. */ 273 PHY_WRITE(sc, JMPHY_TMCTL, 274 PHY_READ(sc, JMPHY_TMCTL) & ~JMPHY_TMCTL_SLEEP_ENB); 275 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN); 276 277 for (i = 0; i < 1000; i++) { 278 DELAY(1); 279 if ((PHY_READ(sc, MII_BMCR) & BMCR_RESET) == 0) 280 break; 281 } 282} 283 284static uint16_t 285jmphy_anar(struct ifmedia_entry *ife) 286{ 287 uint16_t anar; 288 289 anar = 0; 290 switch (IFM_SUBTYPE(ife->ifm_media)) { 291 case IFM_AUTO: 292 anar |= ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10; 293 break; 294 case IFM_1000_T: 295 break; 296 case IFM_100_TX: 297 anar |= ANAR_TX | ANAR_TX_FD; 298 break; 299 case IFM_10_T: 300 anar |= ANAR_10 | ANAR_10_FD; 301 break; 302 default: 303 break; 304 } 305 306 return (anar); 307} 308 309static int 310jmphy_setmedia(struct mii_softc *sc, struct ifmedia_entry *ife) 311{ 312 uint16_t anar, bmcr, gig; 313 314 gig = 0; 315 bmcr = PHY_READ(sc, MII_BMCR); 316 switch (IFM_SUBTYPE(ife->ifm_media)) { 317 case IFM_AUTO: 318 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; 319 break; 320 case IFM_1000_T: 321 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; 322 break; 323 case IFM_100_TX: 324 case IFM_10_T: 325 break; 326 case IFM_NONE: 327 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO | BMCR_PDOWN); 328 return (EJUSTRETURN); 329 default: 330 return (EINVAL); 331 } 332 333 if ((ife->ifm_media & IFM_LOOP) != 0) 334 bmcr |= BMCR_LOOP; 335 336 anar = jmphy_anar(ife); 337 if (((IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO || 338 (ife->ifm_media & IFM_FDX) != 0) && 339 (ife->ifm_media & IFM_FLOW) != 0) || 340 (sc->mii_flags & MIIF_FORCEPAUSE) != 0) 341 anar |= ANAR_PAUSE_TOWARDS; 342 343 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) { 344 if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) { 345 gig |= GTCR_MAN_MS; 346 if ((ife->ifm_media & IFM_ETH_MASTER) != 0) 347 gig |= GTCR_ADV_MS; 348 } 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