gphyter.c revision 1.19.30.1
1 /* $NetBSD: gphyter.c,v 1.19.30.1 2008/02/18 21:05:51 mjf Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by Manuel Bouyer. 54 * 4. The name of the author may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 /* 70 * driver for National Semiconductor's DP83891 and DP83861 `Gig PHYTER' 71 * ethernet 10/100/1000 PHYs. The DP83891 is an older, non-firmware- 72 * driven version of the DP83861. 73 * 74 * Data Sheet available from www.national.com 75 */ 76 77 #include <sys/cdefs.h> 78 __KERNEL_RCSID(0, "$NetBSD: gphyter.c,v 1.19.30.1 2008/02/18 21:05:51 mjf Exp $"); 79 80 #include <sys/param.h> 81 #include <sys/systm.h> 82 #include <sys/kernel.h> 83 #include <sys/device.h> 84 #include <sys/socket.h> 85 #include <sys/errno.h> 86 87 #include <net/if.h> 88 #include <net/if_media.h> 89 90 #include <dev/mii/mii.h> 91 #include <dev/mii/miivar.h> 92 #include <dev/mii/miidevs.h> 93 94 #include <dev/mii/gphyterreg.h> 95 96 static int gphytermatch(struct device *, struct cfdata *, void *); 97 static void gphyterattach(struct device *, struct device *, void *); 98 99 CFATTACH_DECL(gphyter, sizeof(struct mii_softc), 100 gphytermatch, gphyterattach, mii_phy_detach, mii_phy_activate); 101 102 static int gphyter_service(struct mii_softc *, struct mii_data *, int); 103 static void gphyter_status(struct mii_softc *); 104 static void gphyter_reset(struct mii_softc *); 105 106 static const struct mii_phy_funcs gphyter_funcs = { 107 gphyter_service, gphyter_status, gphyter_reset, 108 }; 109 110 static const struct mii_phydesc gphyters[] = { 111 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83861, 112 MII_STR_xxNATSEMI_DP83861 }, 113 114 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83891, 115 MII_STR_xxNATSEMI_DP83891 }, 116 117 { 0, 0, 118 NULL }, 119 }; 120 121 static int 122 gphytermatch(struct device *parent, struct cfdata *match, 123 void *aux) 124 { 125 struct mii_attach_args *ma = aux; 126 127 if (mii_phy_match(ma, gphyters) != NULL) 128 return (10); 129 130 return (0); 131 } 132 133 static void 134 gphyterattach(struct device *parent, struct device *self, void *aux) 135 { 136 struct mii_softc *sc = (struct mii_softc *)self; 137 struct mii_attach_args *ma = aux; 138 struct mii_data *mii = ma->mii_data; 139 const struct mii_phydesc *mpd; 140 int anar, strap; 141 142 mpd = mii_phy_match(ma, gphyters); 143 aprint_naive(": Media interface\n"); 144 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 145 146 sc->mii_inst = mii->mii_instance; 147 sc->mii_phy = ma->mii_phyno; 148 sc->mii_funcs = &gphyter_funcs; 149 sc->mii_pdata = mii; 150 sc->mii_flags = ma->mii_flags; 151 sc->mii_anegticks = MII_ANEGTICKS; 152 153 PHY_RESET(sc); 154 155 sc->mii_capabilities = 156 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 157 if (sc->mii_capabilities & BMSR_EXTSTAT) 158 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 159 160 /* 161 * The Gig PHYTER seems to have the 10baseT BMSR bits 162 * hard-wired to 0, even though the device supports 163 * 10baseT. What we do instead is read the post-reset 164 * ANAR, who's 10baseT-related bits are set by strapping 165 * pin 180, and fake the BMSR bits. 166 */ 167 anar = PHY_READ(sc, MII_ANAR); 168 if (anar & ANAR_10) 169 sc->mii_capabilities |= (BMSR_10THDX & ma->mii_capmask); 170 if (anar & ANAR_10_FD) 171 sc->mii_capabilities |= (BMSR_10TFDX & ma->mii_capmask); 172 173 aprint_normal("%s: ", sc->mii_dev.dv_xname); 174 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 175 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 176 aprint_error("no media present"); 177 else 178 mii_phy_add_media(sc); 179 aprint_normal("\n"); 180 181 strap = PHY_READ(sc, MII_GPHYTER_STRAP); 182 aprint_normal("%s: strapped to %s mode", sc->mii_dev.dv_xname, 183 (strap & STRAP_MS_VAL) ? "master" : "slave"); 184 if (strap & STRAP_NC_MODE) 185 aprint_normal(", pre-C5 BCM5400 compat enabled"); 186 aprint_normal("\n"); 187 } 188 189 static int 190 gphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 191 { 192 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 193 int reg; 194 195 switch (cmd) { 196 case MII_POLLSTAT: 197 /* 198 * If we're not polling our PHY instance, just return. 199 */ 200 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 201 return (0); 202 break; 203 204 case MII_MEDIACHG: 205 /* 206 * If the media indicates a different PHY instance, 207 * isolate ourselves. 208 */ 209 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 210 reg = PHY_READ(sc, MII_BMCR); 211 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 212 return (0); 213 } 214 215 /* 216 * If the interface is not up, don't do anything. 217 */ 218 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 219 break; 220 221 mii_phy_setmedia(sc); 222 break; 223 224 case MII_TICK: 225 /* 226 * If we're not currently selected, just return. 227 */ 228 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 229 return (0); 230 231 if (mii_phy_tick(sc) == EJUSTRETURN) 232 return (0); 233 break; 234 235 case MII_DOWN: 236 mii_phy_down(sc); 237 return (0); 238 } 239 240 /* Update the media status. */ 241 mii_phy_status(sc); 242 243 /* Callback if something changed. */ 244 mii_phy_update(sc, cmd); 245 return (0); 246 } 247 248 static void 249 gphyter_status(struct mii_softc *sc) 250 { 251 struct mii_data *mii = sc->mii_pdata; 252 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 253 int bmsr, bmcr, physup, gtsr; 254 255 mii->mii_media_status = IFM_AVALID; 256 mii->mii_media_active = IFM_ETHER; 257 258 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 259 260 physup = PHY_READ(sc, MII_GPHYTER_PHY_SUP); 261 262 if (physup & PHY_SUP_LINK) 263 mii->mii_media_status |= IFM_ACTIVE; 264 265 bmcr = PHY_READ(sc, MII_BMCR); 266 if (bmcr & BMCR_ISO) { 267 mii->mii_media_active |= IFM_NONE; 268 mii->mii_media_status = 0; 269 return; 270 } 271 272 if (bmcr & BMCR_LOOP) 273 mii->mii_media_active |= IFM_LOOP; 274 275 if (bmcr & BMCR_AUTOEN) { 276 /* 277 * The media status bits are only valid of autonegotiation 278 * has completed (or it's disabled). 279 */ 280 if ((bmsr & BMSR_ACOMP) == 0) { 281 /* Erg, still trying, I guess... */ 282 mii->mii_media_active |= IFM_NONE; 283 return; 284 } 285 286 switch (physup & (PHY_SUP_SPEED1|PHY_SUP_SPEED0)) { 287 case PHY_SUP_SPEED1: 288 mii->mii_media_active |= IFM_1000_T; 289 gtsr = PHY_READ(sc, MII_100T2SR); 290 if (gtsr & GTSR_MS_RES) 291 mii->mii_media_active |= IFM_ETH_MASTER; 292 break; 293 294 case PHY_SUP_SPEED0: 295 mii->mii_media_active |= IFM_100_TX; 296 break; 297 298 case 0: 299 mii->mii_media_active |= IFM_10_T; 300 break; 301 302 default: 303 mii->mii_media_active |= IFM_NONE; 304 mii->mii_media_status = 0; 305 } 306 if (physup & PHY_SUP_DUPLEX) 307 mii->mii_media_active |= 308 IFM_FDX | mii_phy_flowstatus(sc); 309 } else 310 mii->mii_media_active = ife->ifm_media; 311 } 312 313 void 314 gphyter_reset(struct mii_softc *sc) 315 { 316 int reg, i; 317 318 if (sc->mii_flags & MIIF_NOISOLATE) 319 reg = BMCR_RESET; 320 else 321 reg = BMCR_RESET | BMCR_ISO; 322 PHY_WRITE(sc, MII_BMCR, reg); 323 324 /* 325 * It is best to allow a little time for the reset to settle 326 * in before we start polling the BMCR again. Notably, the 327 * DP83840A manual states that there should be a 500us delay 328 * between asserting software reset and attempting MII serial 329 * operations. Also, a DP83815 can get into a bad state on 330 * cable removal and reinsertion if we do not delay here. 331 */ 332 delay(500); 333 334 /* Wait another 100ms for it to complete. */ 335 for (i = 0; i < 100; i++) { 336 reg = PHY_READ(sc, MII_BMCR); 337 if ((reg & BMCR_RESET) == 0) 338 break; 339 delay(1000); 340 } 341 342 if (sc->mii_inst != 0 && ((sc->mii_flags & MIIF_NOISOLATE) == 0)) 343 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 344 } 345
Indexes created Mon Oct 20 16:09:52 GMT 2025