rlphy.c revision 1.13
1 /* $NetBSD: rlphy.c,v 1.13 2007/03/19 12:23:30 tsutsui Exp $ */ 2 /* $OpenBSD: rlphy.c,v 1.20 2005/07/31 05:27:30 pvalchev Exp $ */ 3 4 /* 5 * Copyright (c) 1998, 1999 Jason L. Wright (jason (at) thought.net) 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, this list of conditions and the following 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 ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 /* 31 * Driver for the internal PHY found on RTL8139 based nics, based 32 * on drivers for the 'exphy' (Internal 3Com phys) and 'nsphy' 33 * (National Semiconductor DP83840). 34 */ 35 36 /* 37 * Ported to NetBSD by Juan Romero Pardines <xtraeme (at) NetBSD.org> 38 */ 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: rlphy.c,v 1.13 2007/03/19 12:23:30 tsutsui Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/device.h> 47 #include <sys/socket.h> 48 #include <sys/errno.h> 49 50 #include <net/if.h> 51 #include <net/if_media.h> 52 53 #include <dev/mii/mii.h> 54 #include <dev/mii/miivar.h> 55 #include <dev/mii/miidevs.h> 56 #include <machine/bus.h> 57 #include <dev/ic/rtl81x9reg.h> 58 59 int rlphymatch(struct device *, struct cfdata *, void *); 60 void rlphyattach(struct device *, struct device *, void *); 61 62 CFATTACH_DECL(rlphy, sizeof(struct mii_softc), 63 rlphymatch, rlphyattach, mii_phy_detach, mii_phy_activate); 64 65 int rlphy_service(struct mii_softc *, struct mii_data *, int); 66 void rlphy_status(struct mii_softc *); 67 68 static void rlphy_reset(struct mii_softc *); 69 70 const struct mii_phy_funcs rlphy_funcs = { 71 rlphy_service, rlphy_status, rlphy_reset, 72 }; 73 74 static const struct mii_phydesc rlphys[] = { 75 { MII_OUI_yyREALTEK, MII_MODEL_yyREALTEK_RTL8201L, 76 MII_STR_yyREALTEK_RTL8201L }, 77 { MII_OUI_ICPLUS, MII_MODEL_ICPLUS_IP101, 78 MII_STR_ICPLUS_IP101 }, 79 80 { 0, 0, 81 NULL }, 82 }; 83 84 int 85 rlphymatch(struct device *parent, struct cfdata *match, void *aux) 86 { 87 struct mii_attach_args *ma = aux; 88 89 if (mii_phy_match(ma, rlphys) != NULL) 90 return (10); 91 92 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || 93 MII_MODEL(ma->mii_id2) != 0) 94 return 0; 95 96 if (!device_is_a(parent, "rtk") && !device_is_a(parent, "re")) 97 return 0; 98 99 /* 100 * A "real" phy should get preference, but on the 8139 there 101 * is no phyid register. 102 */ 103 return 5; 104 } 105 106 void 107 rlphyattach(struct device *parent, struct device *self, void *aux) 108 { 109 struct mii_softc *sc = device_private(self); 110 struct mii_attach_args *ma = aux; 111 struct mii_data *mii = ma->mii_data; 112 113 if (MII_MODEL(ma->mii_id2) == MII_MODEL_yyREALTEK_RTL8201L) { 114 aprint_normal(": %s, rev. %d\n", MII_STR_yyREALTEK_RTL8201L, 115 MII_REV(ma->mii_id2)); 116 } else 117 aprint_normal(": Realtek internal PHY\n"); 118 119 sc->mii_inst = mii->mii_instance; 120 sc->mii_phy = ma->mii_phyno; 121 sc->mii_funcs = &rlphy_funcs; 122 sc->mii_pdata = mii; 123 sc->mii_flags = ma->mii_flags; 124 125 sc->mii_flags |= MIIF_NOISOLATE; 126 127 PHY_RESET(sc); 128 129 aprint_normal("%s: ", sc->mii_dev.dv_xname); 130 sc->mii_capabilities = 131 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 132 if (sc->mii_capabilities & BMSR_MEDIAMASK) 133 mii_phy_add_media(sc); 134 aprint_normal("\n"); 135 } 136 137 int 138 rlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 139 { 140 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 141 142 int rv; 143 144 if (!device_is_active(&sc->mii_dev)) 145 return ENXIO; 146 147 /* 148 * Can't isolate the RTL8139 phy, so it has to be the only one. 149 */ 150 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 151 panic("rlphy_service: attempt to isolate phy"); 152 153 switch (cmd) { 154 case MII_POLLSTAT: 155 break; 156 157 case MII_MEDIACHG: 158 /* 159 * If the interface is not up, don't do anything. 160 */ 161 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 162 break; 163 164 switch (IFM_SUBTYPE(ife->ifm_media)) { 165 case IFM_AUTO: 166 /* 167 * If we're already in auto mode, just return. 168 */ 169 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 170 return (0); 171 (void) mii_phy_auto(sc, 0); 172 break; 173 case IFM_100_T4: 174 /* 175 * XXX Not supported as a manual setting right now. 176 */ 177 return (EINVAL); 178 default: 179 /* 180 * BMCR data is stored in the ifmedia entry. 181 */ 182 switch (ife->ifm_media & 183 (IFM_TMASK|IFM_NMASK|IFM_FDX)) { 184 case IFM_ETHER|IFM_10_T: 185 rv = ANAR_10|ANAR_CSMA; 186 break; 187 case IFM_ETHER|IFM_10_T|IFM_FDX: 188 rv = ANAR_10_FD|ANAR_CSMA; 189 break; 190 case IFM_ETHER|IFM_100_TX: 191 rv = ANAR_TX|ANAR_CSMA; 192 break; 193 case IFM_ETHER|IFM_100_TX|IFM_FDX: 194 rv = ANAR_TX_FD|ANAR_CSMA; 195 break; 196 case IFM_ETHER|IFM_100_T4: 197 rv = ANAR_T4|ANAR_CSMA; 198 break; 199 default: 200 rv = 0; 201 break; 202 } 203 204 PHY_WRITE(sc, MII_ANAR, rv); 205 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 206 } 207 break; 208 209 case MII_TICK: 210 /* 211 * Is the interface even up? 212 */ 213 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 214 return (0); 215 216 /* 217 * Only used for autonegotiation. 218 */ 219 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 220 break; 221 222 /* 223 * The RealTek PHY's autonegotiation doesn't need to be 224 * kicked; it continues in the background. 225 */ 226 break; 227 228 case MII_DOWN: 229 mii_phy_down(sc); 230 return (0); 231 } 232 233 /* Update the media status. */ 234 mii_phy_status(sc); 235 236 /* Callback if something changed. */ 237 mii_phy_update(sc, cmd); 238 return (0); 239 } 240 241 void 242 rlphy_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 int bmsr, bmcr, anlpar; 247 248 mii->mii_media_status = IFM_AVALID; 249 mii->mii_media_active = IFM_ETHER; 250 251 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 252 if (bmsr & BMSR_LINK) 253 mii->mii_media_status |= IFM_ACTIVE; 254 255 bmcr = PHY_READ(sc, MII_BMCR); 256 if (bmcr & BMCR_ISO) { 257 mii->mii_media_active |= IFM_NONE; 258 mii->mii_media_status = 0; 259 return; 260 } 261 262 if (bmcr & BMCR_LOOP) 263 mii->mii_media_active |= IFM_LOOP; 264 265 if (bmcr & BMCR_AUTOEN) { 266 /* 267 * NWay autonegotiation takes the highest-order common 268 * bit of the ANAR and ANLPAR (i.e. best media advertised 269 * both by us and our link partner). 270 */ 271 if ((bmsr & BMSR_ACOMP) == 0) { 272 /* Erg, still trying, I guess... */ 273 mii->mii_media_active |= IFM_NONE; 274 return; 275 } 276 277 if ((anlpar = PHY_READ(sc, MII_ANAR) & 278 PHY_READ(sc, MII_ANLPAR))) { 279 if (anlpar & ANLPAR_T4) 280 mii->mii_media_active |= IFM_100_T4; 281 else if (anlpar & ANLPAR_TX_FD) 282 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 283 else if (anlpar & ANLPAR_TX) 284 mii->mii_media_active |= IFM_100_TX; 285 else if (anlpar & ANLPAR_10_FD) 286 mii->mii_media_active |= IFM_10_T|IFM_FDX; 287 else if (anlpar & ANLPAR_10) 288 mii->mii_media_active |= IFM_10_T; 289 else 290 mii->mii_media_active |= IFM_NONE; 291 return; 292 } 293 294 /* 295 * If the other side doesn't support NWAY, then the 296 * best we can do is determine if we have a 10Mbps or 297 * 100Mbps link. There's no way to know if the link 298 * is full or half duplex, so we default to half duplex 299 * and hope that the user is clever enough to manually 300 * change the media settings if we're wrong. 301 */ 302 303 /* 304 * The RealTek PHY supports non-NWAY link speed 305 * detection, however it does not report the link 306 * detection results via the ANLPAR or BMSR registers. 307 * (What? RealTek doesn't do things the way everyone 308 * else does? I'm just shocked, shocked I tell you.) 309 * To determine the link speed, we have to do one 310 * of two things: 311 * 312 * - If this is a standalone RealTek RTL8201(L) PHY, 313 * we can determine the link speed by testing bit 0 314 * in the magic, vendor-specific register at offset 315 * 0x19. 316 * 317 * - If this is a RealTek MAC with integrated PHY, we 318 * can test the 'SPEED10' bit of the MAC's media status 319 * register. 320 */ 321 if (device_is_a(device_parent(&sc->mii_dev), "rtk")) { 322 if (PHY_READ(sc, RTK_MEDIASTAT) & RTK_MEDIASTAT_SPEED10) 323 mii->mii_media_active |= IFM_10_T; 324 else 325 mii->mii_media_active |= IFM_100_TX; 326 } else { 327 if (PHY_READ(sc, 0x0019) & 0x01) 328 mii->mii_media_active |= IFM_100_TX; 329 else 330 mii->mii_media_active |= IFM_10_T; 331 } 332 333 } else 334 mii->mii_media_active = ife->ifm_media; 335 } 336 337 static void 338 rlphy_reset(struct mii_softc *sc) 339 { 340 341 mii_phy_reset(sc); 342 343 /* 344 * XXX RealTek PHY doesn't set the BMCR properly after 345 * XXX reset, which breaks autonegotiation. 346 */ 347 PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN); 348 } 349
Indexes created Thu Oct 23 22:10:10 GMT 2025