1 /* $NetBSD: jmphy.c,v 1.5 2023/02/22 08:09:09 msaitoh Exp $ */ 2 /* $OpenBSD: jmphy.c,v 1.6 2015/03/14 03:38:48 jsg Exp $ */ 3 /*- 4 * Copyright (c) 2008, Pyun YongHyeon <yongari (at) FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/sys/dev/mii/jmphy.c,v 1.1 2008/05/27 01:16:40 yongari Exp $ 30 * $DragonFly: src/sys/dev/netif/mii_layer/jmphy.c,v 1.1 2008/07/22 11:28:49 sephe Exp $ 31 */ 32 33 /* 34 * Driver for the JMicron JMP211 10/100/1000, JMP202 10/100 PHY. 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 #include <sys/socket.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 <dev/mii/miidevs.h> 48 #include <dev/mii/jmphyreg.h> 49 50 static int jmphy_service(struct mii_softc *, struct mii_data *, int); 51 static void jmphy_status(struct mii_softc *); 52 static int jmphy_match(device_t, cfdata_t, void *); 53 static void jmphy_attach(device_t, device_t, void *); 54 static void jmphy_reset(struct mii_softc *); 55 static uint16_t jmphy_anar(struct ifmedia_entry *); 56 static int jmphy_auto(struct mii_softc *, struct ifmedia_entry *); 57 58 static const struct mii_phy_funcs jmphy_funcs = { 59 jmphy_service, jmphy_status, jmphy_reset, 60 }; 61 62 CFATTACH_DECL_NEW(jmphy, sizeof (struct mii_softc), 63 jmphy_match, jmphy_attach, mii_phy_detach, mii_phy_activate); 64 65 static const struct mii_phydesc jmphys[] = { 66 MII_PHY_DESC(JMICRON, JMP202), 67 MII_PHY_DESC(JMICRON, JMP211), 68 MII_PHY_END, 69 }; 70 71 static int 72 jmphy_match(device_t parent, cfdata_t match, void *aux) 73 { 74 struct mii_attach_args *ma = aux; 75 76 if (mii_phy_match(ma, jmphys) != NULL) 77 return 10; 78 79 return 0; 80 } 81 82 static void 83 jmphy_attach(device_t parent, device_t self, void *aux) 84 { 85 struct mii_softc *sc = device_private(self); 86 struct mii_attach_args *ma = aux; 87 struct mii_data *mii = ma->mii_data; 88 const struct mii_phydesc *mpd; 89 90 mpd = mii_phy_match(ma, jmphys); 91 aprint_naive(": Media interface\n"); 92 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 93 94 sc->mii_dev = self; 95 sc->mii_inst = mii->mii_instance; 96 sc->mii_phy = ma->mii_phyno; 97 sc->mii_funcs = &jmphy_funcs; 98 sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 99 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 100 sc->mii_mpd_rev = MII_REV(ma->mii_id2); 101 sc->mii_pdata = mii; 102 sc->mii_flags = ma->mii_flags; 103 104 sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP; 105 106 mii_lock(mii); 107 108 PHY_RESET(sc); 109 110 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 111 sc->mii_capabilities &= ma->mii_capmask; 112 if (sc->mii_capabilities & BMSR_EXTSTAT) 113 PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities); 114 115 mii_unlock(mii); 116 117 mii_phy_add_media(sc); 118 } 119 120 static int 121 jmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 122 { 123 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 124 uint16_t bmcr, ssr; 125 126 KASSERT(mii_locked(mii)); 127 128 switch (cmd) { 129 case MII_POLLSTAT: 130 /* If we're not polling our PHY instance, just return. */ 131 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 132 return 0; 133 break; 134 135 case MII_MEDIACHG: 136 /* 137 * If the media indicates a different PHY instance, 138 * isolate ourselves. 139 */ 140 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 141 PHY_READ(sc, MII_BMCR, &bmcr); 142 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO); 143 return 0; 144 } 145 146 /* If the interface is not up, don't do anything. */ 147 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 148 break; 149 150 if (jmphy_auto(sc, ife) != EJUSTRETURN) 151 return EINVAL; 152 break; 153 154 case MII_TICK: 155 /* If we're not currently selected, just return. */ 156 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 157 return 0; 158 159 /* Is the interface even up? */ 160 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 161 return 0; 162 163 /* Only used for autonegotiation. */ 164 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 165 break; 166 167 /* Check for link. */ 168 PHY_READ(sc, JMPHY_SSR, &ssr); 169 if (ssr & JMPHY_SSR_LINK_UP) { 170 sc->mii_ticks = 0; 171 break; 172 } 173 174 /* Announce link loss right after it happens. */ 175 if (sc->mii_ticks++ == 0) 176 break; 177 if (sc->mii_ticks < sc->mii_anegticks) 178 return 0; 179 180 sc->mii_ticks = 0; 181 jmphy_auto(sc, ife); 182 break; 183 } 184 185 /* Update the media status. */ 186 jmphy_status(sc); 187 188 /* Callback if something changed. */ 189 mii_phy_update(sc, cmd); 190 return 0; 191 } 192 193 static void 194 jmphy_status(struct mii_softc *sc) 195 { 196 struct mii_data *mii = sc->mii_pdata; 197 uint16_t bmcr, ssr, gtsr; 198 199 KASSERT(mii_locked(mii)); 200 201 mii->mii_media_status = IFM_AVALID; 202 mii->mii_media_active = IFM_ETHER; 203 204 PHY_READ(sc, JMPHY_SSR, &ssr); 205 if ((ssr & JMPHY_SSR_LINK_UP) != 0) 206 mii->mii_media_status |= IFM_ACTIVE; 207 208 PHY_READ(sc, MII_BMCR, &bmcr); 209 if ((bmcr & BMCR_ISO) != 0) { 210 mii->mii_media_active |= IFM_NONE; 211 mii->mii_media_status = 0; 212 return; 213 } 214 215 if ((bmcr & BMCR_LOOP) != 0) 216 mii->mii_media_active |= IFM_LOOP; 217 218 if ((ssr & JMPHY_SSR_SPD_DPLX_RESOLVED) == 0) { 219 /* Erg, still trying, I guess... */ 220 mii->mii_media_active |= IFM_NONE; 221 return; 222 } 223 224 switch ((ssr & JMPHY_SSR_SPEED_MASK)) { 225 case JMPHY_SSR_SPEED_1000: 226 mii->mii_media_active |= IFM_1000_T; 227 /* 228 * jmphy(4) got a valid link so reset mii_ticks. 229 * Resetting mii_ticks is needed in order to 230 * detect link loss after auto-negotiation. 231 */ 232 sc->mii_ticks = 0; 233 break; 234 case JMPHY_SSR_SPEED_100: 235 mii->mii_media_active |= IFM_100_TX; 236 sc->mii_ticks = 0; 237 break; 238 case JMPHY_SSR_SPEED_10: 239 mii->mii_media_active |= IFM_10_T; 240 sc->mii_ticks = 0; 241 break; 242 default: 243 mii->mii_media_active |= IFM_NONE; 244 return; 245 } 246 247 if ((ssr & JMPHY_SSR_DUPLEX) != 0) 248 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc); 249 else 250 mii->mii_media_active |= IFM_HDX; 251 252 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) { 253 PHY_READ(sc, MII_GTSR, >sr); 254 if ((gtsr & GTSR_MS_RES) != 0) 255 mii->mii_media_active |= IFM_ETH_MASTER; 256 } 257 } 258 259 static void 260 jmphy_reset(struct mii_softc *sc) 261 { 262 int i; 263 uint16_t val; 264 265 KASSERT(mii_locked(sc->mii_pdata)); 266 267 /* Disable sleep mode. */ 268 PHY_READ(sc, JMPHY_TMCTL, &val); 269 PHY_WRITE(sc, JMPHY_TMCTL, val & ~JMPHY_TMCTL_SLEEP_ENB); 270 271 PHY_READ(sc, MII_BMCR, &val); 272 PHY_WRITE(sc, MII_BMCR, val | BMCR_RESET); 273 274 for (i = 0; i < 1000; i++) { 275 DELAY(1); 276 PHY_READ(sc, MII_BMCR, &val); 277 if ((val & BMCR_RESET) == 0) 278 break; 279 } 280 } 281 282 static uint16_t 283 jmphy_anar(struct ifmedia_entry *ife) 284 { 285 uint16_t anar; 286 287 anar = 0; 288 switch (IFM_SUBTYPE(ife->ifm_media)) { 289 case IFM_AUTO: 290 anar |= ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10; 291 break; 292 case IFM_1000_T: 293 break; 294 case IFM_100_TX: 295 anar |= ANAR_TX | ANAR_TX_FD; 296 break; 297 case IFM_10_T: 298 anar |= ANAR_10 | ANAR_10_FD; 299 break; 300 default: 301 break; 302 } 303 304 return anar; 305 } 306 307 static int 308 jmphy_auto(struct mii_softc *sc, struct ifmedia_entry *ife) 309 { 310 uint16_t anar, bmcr, gig; 311 312 KASSERT(mii_locked(sc->mii_pdata)); 313 314 gig = 0; 315 PHY_READ(sc, MII_BMCR, &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 (sc->mii_flags & MIIF_DOPAUSE) 338 anar |= ANAR_PAUSE_TOWARDS; 339 340 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) { 341 #ifdef notyet 342 struct mii_data *mii; 343 344 mii = sc->mii_pdata; 345 if ((mii->mii_media.ifm_media & IFM_ETH_MASTER) != 0) 346 gig |= GTCR_MAN_MS | GTCR_MAN_ADV; 347 #endif 348 PHY_WRITE(sc, MII_100T2CR, gig); 349 } 350 PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA); 351 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_AUTOEN | BMCR_STARTNEG); 352 353 return EJUSTRETURN; 354 } 355
Indexes created Sun Sep 21 15:09:59 GMT 2025