1 /* $NetBSD: rlphy.c,v 1.30 2016/07/07 06:55:41 msaitoh 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@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@NetBSD.org> 38 */ 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: rlphy.c,v 1.30 2016/07/07 06:55:41 msaitoh 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 <sys/bus.h> 57 #include <dev/ic/rtl81x9reg.h> 58 59 struct rlphy_softc { 60 struct mii_softc sc_mii; 61 int sc_rtl8201l; 62 }; 63 64 int rlphymatch(device_t, cfdata_t, void *); 65 void rlphyattach(device_t, device_t, void *); 66 67 CFATTACH_DECL_NEW(rlphy, sizeof(struct rlphy_softc), 68 rlphymatch, rlphyattach, mii_phy_detach, mii_phy_activate); 69 70 int rlphy_service(struct mii_softc *, struct mii_data *, int); 71 void rlphy_status(struct mii_softc *); 72 73 static void rlphy_reset(struct mii_softc *); 74 75 const struct mii_phy_funcs rlphy_funcs = { 76 rlphy_service, rlphy_status, rlphy_reset, 77 }; 78 79 static const struct mii_phydesc rlphys[] = { 80 { MII_OUI_yyREALTEK, MII_MODEL_yyREALTEK_RTL8201L, 81 MII_STR_yyREALTEK_RTL8201L }, 82 { MII_OUI_ICPLUS, MII_MODEL_ICPLUS_IP101, 83 MII_STR_ICPLUS_IP101 }, 84 85 { 0, 0, 86 NULL }, 87 }; 88 89 int 90 rlphymatch(device_t parent, cfdata_t match, void *aux) 91 { 92 struct mii_attach_args *ma = aux; 93 struct mii_data *mii = ma->mii_data; 94 95 if (mii->mii_instance != 0) 96 return 0; 97 98 if (mii_phy_match(ma, rlphys) != NULL) 99 return (10); 100 101 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || 102 MII_MODEL(ma->mii_id2) != 0) 103 return 0; 104 105 if (!device_is_a(parent, "rtk") && !device_is_a(parent, "re")) 106 return 0; 107 108 /* 109 * A "real" phy should get preference, but on the 8139 there 110 * is no phyid register. 111 */ 112 return 5; 113 } 114 115 void 116 rlphyattach(device_t parent, device_t self, void *aux) 117 { 118 struct rlphy_softc *rsc = device_private(self); 119 struct mii_softc *sc = &rsc->sc_mii; 120 struct mii_attach_args *ma = aux; 121 struct mii_data *mii = ma->mii_data; 122 123 aprint_naive("\n"); 124 if (MII_MODEL(ma->mii_id2) == MII_MODEL_yyREALTEK_RTL8201L) { 125 rsc->sc_rtl8201l = 1; 126 aprint_normal(": %s, rev. %d\n", MII_STR_yyREALTEK_RTL8201L, 127 MII_REV(ma->mii_id2)); 128 } else 129 aprint_normal(": Realtek internal PHY\n"); 130 131 sc->mii_dev = self; 132 sc->mii_inst = mii->mii_instance; 133 sc->mii_phy = ma->mii_phyno; 134 sc->mii_funcs = &rlphy_funcs; 135 sc->mii_pdata = mii; 136 sc->mii_flags = ma->mii_flags; 137 138 sc->mii_flags |= MIIF_NOISOLATE; 139 140 PHY_RESET(sc); 141 142 aprint_normal_dev(self, ""); 143 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 144 if (sc->mii_capabilities & BMSR_MEDIAMASK) 145 mii_phy_add_media(sc); 146 aprint_normal("\n"); 147 } 148 149 int 150 rlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 151 { 152 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 153 154 /* 155 * Can't isolate the RTL8139 phy, so it has to be the only one. 156 */ 157 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 158 panic("rlphy_service: attempt to isolate phy"); 159 160 switch (cmd) { 161 case MII_POLLSTAT: 162 break; 163 164 case MII_MEDIACHG: 165 /* 166 * If the interface is not up, don't do anything. 167 */ 168 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 169 break; 170 171 mii_phy_setmedia(sc); 172 break; 173 174 case MII_TICK: 175 /* 176 * Is the interface even up? 177 */ 178 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 179 return (0); 180 181 /* 182 * Only used for autonegotiation. 183 */ 184 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 185 break; 186 187 /* 188 * The RealTek PHY's autonegotiation doesn't need to be 189 * kicked; it continues in the background. 190 */ 191 break; 192 193 case MII_DOWN: 194 mii_phy_down(sc); 195 return (0); 196 } 197 198 /* Update the media status. */ 199 mii_phy_status(sc); 200 201 /* Callback if something changed. */ 202 mii_phy_update(sc, cmd); 203 return (0); 204 } 205 206 void 207 rlphy_status(struct mii_softc *sc) 208 { 209 struct rlphy_softc *rsc = (void *)sc; 210 struct mii_data *mii = sc->mii_pdata; 211 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 212 int bmsr, bmcr, anlpar; 213 214 mii->mii_media_status = IFM_AVALID; 215 mii->mii_media_active = IFM_ETHER; 216 217 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 218 if (bmsr & BMSR_LINK) 219 mii->mii_media_status |= IFM_ACTIVE; 220 221 bmcr = PHY_READ(sc, MII_BMCR); 222 if (bmcr & BMCR_ISO) { 223 mii->mii_media_active |= IFM_NONE; 224 mii->mii_media_status = 0; 225 return; 226 } 227 228 if (bmcr & BMCR_LOOP) 229 mii->mii_media_active |= IFM_LOOP; 230 231 if (bmcr & BMCR_AUTOEN) { 232 /* 233 * NWay autonegotiation takes the highest-order common 234 * bit of the ANAR and ANLPAR (i.e. best media advertised 235 * both by us and our link partner). 236 */ 237 if ((bmsr & BMSR_ACOMP) == 0) { 238 /* Erg, still trying, I guess... */ 239 mii->mii_media_active |= IFM_NONE; 240 return; 241 } 242 243 if ((anlpar = PHY_READ(sc, MII_ANAR) & 244 PHY_READ(sc, MII_ANLPAR))) { 245 if (anlpar & ANLPAR_TX_FD) 246 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 247 else if (anlpar & ANLPAR_T4) 248 mii->mii_media_active |= IFM_100_T4|IFM_HDX; 249 else if (anlpar & ANLPAR_TX) 250 mii->mii_media_active |= IFM_100_TX|IFM_HDX; 251 else if (anlpar & ANLPAR_10_FD) 252 mii->mii_media_active |= IFM_10_T|IFM_FDX; 253 else if (anlpar & ANLPAR_10) 254 mii->mii_media_active |= IFM_10_T|IFM_HDX; 255 else 256 mii->mii_media_active |= IFM_NONE; 257 return; 258 } 259 260 /* 261 * If the other side doesn't support NWAY, then the 262 * best we can do is determine if we have a 10Mbps or 263 * 100Mbps link. There's no way to know if the link 264 * is full or half duplex, so we default to half duplex 265 * and hope that the user is clever enough to manually 266 * change the media settings if we're wrong. 267 */ 268 269 /* 270 * The RealTek PHY supports non-NWAY link speed 271 * detection, however it does not report the link 272 * detection results via the ANLPAR or BMSR registers. 273 * (What? RealTek doesn't do things the way everyone 274 * else does? I'm just shocked, shocked I tell you.) 275 * To determine the link speed, we have to do one 276 * of two things: 277 * 278 * - If this is a standalone RealTek RTL8201(L) PHY, 279 * we can determine the link speed by testing bit 0 280 * in the magic, vendor-specific register at offset 281 * 0x19. 282 * 283 * - If this is a RealTek MAC with integrated PHY, we 284 * can test the 'SPEED10' bit of the MAC's media status 285 * register. 286 */ 287 if (rsc->sc_rtl8201l) { 288 if (PHY_READ(sc, 0x0019) & 0x01) 289 mii->mii_media_active |= IFM_100_TX; 290 else 291 mii->mii_media_active |= IFM_10_T; 292 } else { 293 if (PHY_READ(sc, RTK_MEDIASTAT) & RTK_MEDIASTAT_SPEED10) 294 mii->mii_media_active |= IFM_10_T; 295 else 296 mii->mii_media_active |= IFM_100_TX; 297 } 298 mii->mii_media_active |= IFM_HDX; 299 } else 300 mii->mii_media_active = ife->ifm_media; 301 } 302 303 static void 304 rlphy_reset(struct mii_softc *sc) 305 { 306 307 mii_phy_reset(sc); 308 309 /* 310 * XXX RealTek PHY doesn't set the BMCR properly after 311 * XXX reset, which breaks autonegotiation. 312 */ 313 PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN); 314 } 315