ipgphy.c revision 1.6
1 /* $NetBSD: ipgphy.c,v 1.6 2019/11/21 09:48:57 msaitoh Exp $ */ 2 /* $OpenBSD: ipgphy.c,v 1.19 2015/07/19 06:28:12 yuo Exp $ */ 3 4 /*- 5 * Copyright (c) 2006, Pyun YongHyeon <yongari (at) FreeBSD.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32 /* 33 * Driver for the IC Plus IP1000A/IP1001 10/100/1000 PHY. 34 */ 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: ipgphy.c,v 1.6 2019/11/21 09:48:57 msaitoh Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/device.h> 42 #include <sys/socket.h> 43 #include <sys/errno.h> 44 45 #include <net/if.h> 46 #include <net/if_media.h> 47 48 #include <dev/mii/mii.h> 49 #include <dev/mii/miivar.h> 50 #include <dev/mii/miidevs.h> 51 52 #include <dev/mii/ipgphyreg.h> 53 54 #include <dev/pci/if_stgereg.h> 55 56 static int ipgphy_match(device_t, cfdata_t, void *); 57 static void ipgphy_attach(device_t, device_t, void *); 58 59 CFATTACH_DECL_NEW(ipgphy, sizeof(struct mii_softc), 60 ipgphy_match, ipgphy_attach, mii_phy_detach, mii_phy_activate); 61 62 static int ipgphy_service(struct mii_softc *, struct mii_data *, int); 63 static void ipgphy_status(struct mii_softc *); 64 static int ipgphy_mii_phy_auto(struct mii_softc *, u_int); 65 static void ipgphy_load_dspcode(struct mii_softc *); 66 static void ipgphy_reset(struct mii_softc *); 67 68 static const struct mii_phy_funcs ipgphy_funcs = { 69 ipgphy_service, ipgphy_status, ipgphy_reset, 70 }; 71 72 static const struct mii_phydesc ipgphys[] = { 73 MII_PHY_DESC(xxICPLUS, IP1000A), 74 MII_PHY_DESC(xxICPLUS, IP1001), 75 MII_PHY_END, 76 }; 77 78 static int 79 ipgphy_match(device_t parent, cfdata_t match, void *aux) 80 { 81 struct mii_attach_args *ma = aux; 82 83 if (mii_phy_match(ma, ipgphys) != NULL) 84 return 10; 85 86 return 0; 87 } 88 89 static void 90 ipgphy_attach(device_t parent, device_t self, void *aux) 91 { 92 struct mii_softc *sc = device_private(self); 93 struct mii_attach_args *ma = aux; 94 struct mii_data *mii = ma->mii_data; 95 const struct mii_phydesc *mpd; 96 97 mpd = mii_phy_match(ma, ipgphys); 98 aprint_naive(": Media interface\n"); 99 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 100 101 sc->mii_dev = self; 102 sc->mii_inst = mii->mii_instance; 103 sc->mii_phy = ma->mii_phyno; 104 sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 105 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 106 sc->mii_mpd_rev = MII_REV(ma->mii_id2); 107 sc->mii_funcs = &ipgphy_funcs; 108 sc->mii_pdata = mii; 109 sc->mii_flags = ma->mii_flags; 110 111 sc->mii_flags |= MIIF_NOISOLATE; 112 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 113 114 PHY_RESET(sc); 115 116 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 117 sc->mii_capabilities &= ma->mii_capmask; 118 //sc->mii_capabilities &= ~BMSR_ANEG; 119 if (sc->mii_capabilities & BMSR_EXTSTAT) 120 PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities); 121 122 mii_phy_add_media(sc); 123 aprint_normal("\n"); 124 } 125 126 static int 127 ipgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 128 { 129 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 130 uint16_t reg, speed; 131 132 switch (cmd) { 133 case MII_POLLSTAT: 134 /* If we're not polling our PHY instance, just return. */ 135 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 136 return 0; 137 break; 138 139 case MII_MEDIACHG: 140 /* 141 * If the media indicates a different PHY instance, 142 * isolate ourselves. 143 */ 144 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 145 PHY_READ(sc, MII_BMCR, ®); 146 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 147 return 0; 148 } 149 150 /* If the interface is not up, don't do anything. */ 151 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 152 break; 153 154 PHY_RESET(sc); 155 156 switch (IFM_SUBTYPE(ife->ifm_media)) { 157 case IFM_AUTO: 158 case IFM_1000_T: 159 /* 160 * This device is required to do auto negotiation 161 * on 1000BASE-T. 162 */ 163 (void)ipgphy_mii_phy_auto(sc, ife->ifm_media); 164 goto done; 165 break; 166 167 case IFM_100_TX: 168 speed = BMCR_S100; 169 break; 170 171 case IFM_10_T: 172 speed = BMCR_S10; 173 break; 174 175 default: 176 return EINVAL; 177 } 178 179 if ((ife->ifm_media & IFM_FDX) != 0) 180 speed |= BMCR_FDX; 181 182 PHY_WRITE(sc, MII_100T2CR, 0); 183 PHY_WRITE(sc, MII_BMCR, speed); 184 done: 185 break; 186 187 case MII_TICK: 188 /* If we're not currently selected, just return. */ 189 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 190 return 0; 191 192 /* Is the interface even up? */ 193 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 194 return 0; 195 196 /* Only used for autonegotiation. */ 197 if ((IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) && 198 (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T)) { 199 sc->mii_ticks = 0; 200 break; 201 } 202 203 /* 204 * Check to see if we have link. If we do, we don't 205 * need to restart the autonegotiation process. Read 206 * the BMSR twice in case it's latched. 207 */ 208 PHY_READ(sc, MII_BMSR, ®); 209 PHY_READ(sc, MII_BMSR, ®); 210 if (reg & BMSR_LINK) { 211 /* 212 * Reset autonegotiation timer to 0 in case the link 213 * goes down in the next tick. 214 */ 215 sc->mii_ticks = 0; 216 /* See above. */ 217 break; 218 } 219 220 /* Announce link loss right after it happens */ 221 if (sc->mii_ticks++ == 0) 222 break; 223 224 /* Only retry autonegotiation every mii_anegticks seconds. */ 225 if (sc->mii_ticks <= sc->mii_anegticks) 226 break; 227 228 sc->mii_ticks = 0; 229 ipgphy_mii_phy_auto(sc, ife->ifm_media); 230 break; 231 } 232 233 /* Update the media status. */ 234 ipgphy_status(sc); 235 236 /* Callback if something changed. */ 237 mii_phy_update(sc, cmd); 238 return 0; 239 } 240 241 static void 242 ipgphy_status(struct mii_softc *sc) 243 { 244 struct mii_data *mii = sc->mii_pdata; 245 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 246 uint16_t bmsr, bmcr, stat, gtsr; 247 248 /* For IP1000A, use generic way */ 249 if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1000A) { 250 ukphy_status(sc); 251 return; 252 } 253 254 mii->mii_media_status = IFM_AVALID; 255 mii->mii_media_active = IFM_ETHER; 256 257 PHY_READ(sc, MII_BMSR, &bmsr); 258 PHY_READ(sc, MII_BMSR, &bmsr); 259 if (bmsr & BMSR_LINK) 260 mii->mii_media_status |= IFM_ACTIVE; 261 262 PHY_READ(sc, MII_BMCR, &bmcr); 263 if (bmcr & BMCR_LOOP) 264 mii->mii_media_active |= IFM_LOOP; 265 266 if (bmcr & BMCR_AUTOEN) { 267 if ((bmsr & BMSR_ACOMP) == 0) { 268 /* Erg, still trying, I guess... */ 269 mii->mii_media_active |= IFM_NONE; 270 return; 271 } 272 273 PHY_READ(sc, IPGPHY_LSR, &stat); 274 switch (stat & IPGPHY_LSR_SPEED_MASK) { 275 case IPGPHY_LSR_SPEED_10: 276 mii->mii_media_active |= IFM_10_T; 277 break; 278 case IPGPHY_LSR_SPEED_100: 279 mii->mii_media_active |= IFM_100_TX; 280 break; 281 case IPGPHY_LSR_SPEED_1000: 282 mii->mii_media_active |= IFM_1000_T; 283 break; 284 default: 285 mii->mii_media_active |= IFM_NONE; 286 return; 287 } 288 289 if (stat & IPGPHY_LSR_FULL_DUPLEX) 290 mii->mii_media_active |= IFM_FDX; 291 else 292 mii->mii_media_active |= IFM_HDX; 293 294 if (mii->mii_media_active & IFM_FDX) 295 mii->mii_media_active |= mii_phy_flowstatus(sc); 296 297 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) { 298 PHY_READ(sc, MII_100T2SR, >sr); 299 if (gtsr & GTSR_MS_RES) 300 mii->mii_media_active |= IFM_ETH_MASTER; 301 } 302 } else 303 mii->mii_media_active = ife->ifm_media; 304 } 305 306 static int 307 ipgphy_mii_phy_auto(struct mii_softc *sc, u_int media) 308 { 309 uint16_t reg = 0; 310 u_int subtype = IFM_SUBTYPE(media); 311 312 /* XXX Is it requreid ? */ 313 if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1001) { 314 PHY_READ(sc, MII_ANAR, ®); 315 reg &= ~(ANAR_PAUSE_SYM | ANAR_PAUSE_ASYM); 316 reg |= ANAR_NP; 317 } 318 319 if (subtype == IFM_AUTO) 320 reg |= ANAR_10 | ANAR_10_FD | ANAR_TX | ANAR_TX_FD; 321 322 if (sc->mii_flags & MIIF_DOPAUSE) 323 reg |= ANAR_PAUSE_SYM | ANAR_PAUSE_ASYM; 324 325 PHY_WRITE(sc, MII_ANAR, reg | ANAR_CSMA); 326 327 if (subtype == IFM_AUTO) 328 reg = GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; 329 else if (subtype == IFM_1000_T) { 330 if ((media & IFM_FDX) != 0) 331 reg = GTCR_ADV_1000TFDX; 332 else 333 reg = GTCR_ADV_1000THDX; 334 } else 335 reg = 0; 336 337 PHY_WRITE(sc, MII_100T2CR, reg); 338 339 PHY_WRITE(sc, MII_BMCR, BMCR_FDX | BMCR_AUTOEN | BMCR_STARTNEG); 340 341 return EJUSTRETURN; 342 } 343 344 static void 345 ipgphy_load_dspcode(struct mii_softc *sc) 346 { 347 PHY_WRITE(sc, 31, 0x0001); 348 PHY_WRITE(sc, 27, 0x01e0); 349 PHY_WRITE(sc, 31, 0x0002); 350 PHY_WRITE(sc, 27, 0xeb8e); 351 PHY_WRITE(sc, 31, 0x0000); 352 PHY_WRITE(sc, 30, 0x005e); 353 PHY_WRITE(sc, 9, 0x0700); 354 355 DELAY(50); 356 } 357 358 static void 359 ipgphy_reset(struct mii_softc *sc) 360 { 361 struct ifnet *ifp = sc->mii_pdata->mii_ifp; 362 uint16_t reg; 363 364 mii_phy_reset(sc); 365 366 /* Clear autoneg/full-duplex as we don't want it after reset */ 367 PHY_READ(sc, MII_BMCR, ®); 368 reg &= ~(BMCR_AUTOEN | BMCR_FDX); 369 PHY_WRITE(sc, MII_BMCR, reg); 370 371 if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1000A && 372 strcmp(ifp->if_xname, "stge") == 0) { 373 struct stge_softc *stge_sc = ifp->if_softc; 374 if (stge_sc->sc_rev >= 0x40 && stge_sc->sc_rev <= 0x4e) 375 ipgphy_load_dspcode(sc); 376 } 377 } 378
Indexes created Wed Oct 22 13:09:56 GMT 2025