gphyter.c revision 1.29
1 /* $NetBSD: gphyter.c,v 1.29 2014/06/16 16:48:16 msaitoh 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 /* 58 * driver for National Semiconductor's DP83891, DP83861 and DP83865 59 * `Gig PHYTER' ethernet 10/100/1000 PHYs. The DP83891 is an older, 60 * non-firmware-driven version of the DP83861. The DP83865 is a low 61 * power version of the DP83861. 62 * 63 * Data Sheets available from www.national.com: 64 * http://www.national.com/ds/DP/DP83861.pdf 65 * http://www.national.com/ds/DP/DP83865.pdf 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: gphyter.c,v 1.29 2014/06/16 16:48:16 msaitoh Exp $"); 70 71 #include <sys/param.h> 72 #include <sys/systm.h> 73 #include <sys/kernel.h> 74 #include <sys/device.h> 75 #include <sys/socket.h> 76 #include <sys/errno.h> 77 78 #include <net/if.h> 79 #include <net/if_media.h> 80 81 #include <dev/mii/mii.h> 82 #include <dev/mii/miivar.h> 83 #include <dev/mii/miidevs.h> 84 85 #include <dev/mii/gphyterreg.h> 86 87 static int gphytermatch(device_t, cfdata_t, void *); 88 static void gphyterattach(device_t, device_t, void *); 89 90 CFATTACH_DECL_NEW(gphyter, sizeof(struct mii_softc), 91 gphytermatch, gphyterattach, mii_phy_detach, mii_phy_activate); 92 93 static int gphyter_service(struct mii_softc *, struct mii_data *, int); 94 static void gphyter_status(struct mii_softc *); 95 static void gphyter_reset(struct mii_softc *); 96 97 static const struct mii_phy_funcs gphyter_funcs = { 98 gphyter_service, gphyter_status, gphyter_reset, 99 }; 100 101 static const struct mii_phydesc gphyters[] = { 102 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83861, 103 MII_STR_xxNATSEMI_DP83861 }, 104 105 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83865, 106 MII_STR_xxNATSEMI_DP83865 }, 107 108 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83891, 109 MII_STR_xxNATSEMI_DP83891 }, 110 111 { 0, 0, 112 NULL }, 113 }; 114 115 static int 116 gphytermatch(device_t parent, cfdata_t match, void *aux) 117 { 118 struct mii_attach_args *ma = aux; 119 120 if (mii_phy_match(ma, gphyters) != NULL) 121 return (10); 122 123 return (0); 124 } 125 126 static void 127 gphyterattach(device_t parent, device_t self, void *aux) 128 { 129 struct mii_softc *sc = device_private(self); 130 struct mii_attach_args *ma = aux; 131 struct mii_data *mii = ma->mii_data; 132 const struct mii_phydesc *mpd; 133 int anar, strap; 134 135 mpd = mii_phy_match(ma, gphyters); 136 aprint_naive(": Media interface\n"); 137 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 138 139 sc->mii_dev = self; 140 sc->mii_inst = mii->mii_instance; 141 sc->mii_phy = ma->mii_phyno; 142 sc->mii_funcs = &gphyter_funcs; 143 sc->mii_pdata = mii; 144 sc->mii_flags = ma->mii_flags; 145 sc->mii_anegticks = MII_ANEGTICKS; 146 147 PHY_RESET(sc); 148 149 sc->mii_capabilities = 150 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 151 if (sc->mii_capabilities & BMSR_EXTSTAT) 152 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 153 154 /* 155 * The Gig PHYTER seems to have the 10baseT BMSR bits 156 * hard-wired to 0, even though the device supports 157 * 10baseT. What we do instead is read the post-reset 158 * ANAR, who's 10baseT-related bits are set by strapping 159 * pin 180, and fake the BMSR bits. 160 */ 161 anar = PHY_READ(sc, MII_ANAR); 162 if (anar & ANAR_10) 163 sc->mii_capabilities |= (BMSR_10THDX & ma->mii_capmask); 164 if (anar & ANAR_10_FD) 165 sc->mii_capabilities |= (BMSR_10TFDX & ma->mii_capmask); 166 167 aprint_normal_dev(self, ""); 168 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 169 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 170 aprint_error("no media present"); 171 else 172 mii_phy_add_media(sc); 173 aprint_normal("\n"); 174 175 strap = PHY_READ(sc, MII_GPHYTER_STRAP); 176 aprint_normal_dev(self, "strapped to %s mode", 177 (strap & STRAP_MS_VAL) ? "master" : "slave"); 178 if (strap & STRAP_NC_MODE) 179 aprint_normal(", pre-C5 BCM5400 compat enabled"); 180 aprint_normal("\n"); 181 } 182 183 static int 184 gphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 185 { 186 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 187 int reg; 188 189 switch (cmd) { 190 case MII_POLLSTAT: 191 /* 192 * If we're not polling our PHY instance, just return. 193 */ 194 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 195 return (0); 196 break; 197 198 case MII_MEDIACHG: 199 /* 200 * If the media indicates a different PHY instance, 201 * isolate ourselves. 202 */ 203 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 204 reg = PHY_READ(sc, MII_BMCR); 205 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 206 return (0); 207 } 208 209 /* 210 * If the interface is not up, don't do anything. 211 */ 212 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 213 break; 214 215 mii_phy_setmedia(sc); 216 break; 217 218 case MII_TICK: 219 /* 220 * If we're not currently selected, just return. 221 */ 222 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 223 return (0); 224 225 if (mii_phy_tick(sc) == EJUSTRETURN) 226 return (0); 227 break; 228 229 case MII_DOWN: 230 mii_phy_down(sc); 231 return (0); 232 } 233 234 /* Update the media status. */ 235 mii_phy_status(sc); 236 237 /* Callback if something changed. */ 238 mii_phy_update(sc, cmd); 239 return (0); 240 } 241 242 static void 243 gphyter_status(struct mii_softc *sc) 244 { 245 struct mii_data *mii = sc->mii_pdata; 246 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 247 int bmsr, bmcr, physup, gtsr; 248 249 mii->mii_media_status = IFM_AVALID; 250 mii->mii_media_active = IFM_ETHER; 251 252 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 253 254 physup = PHY_READ(sc, MII_GPHYTER_PHY_SUP); 255 256 if (physup & PHY_SUP_LINK) 257 mii->mii_media_status |= IFM_ACTIVE; 258 259 bmcr = PHY_READ(sc, MII_BMCR); 260 if (bmcr & BMCR_ISO) { 261 mii->mii_media_active |= IFM_NONE; 262 mii->mii_media_status = 0; 263 return; 264 } 265 266 if (bmcr & BMCR_LOOP) 267 mii->mii_media_active |= IFM_LOOP; 268 269 if (bmcr & BMCR_AUTOEN) { 270 /* 271 * The media status bits are only valid of autonegotiation 272 * has completed (or it's disabled). 273 */ 274 if ((bmsr & BMSR_ACOMP) == 0) { 275 /* Erg, still trying, I guess... */ 276 mii->mii_media_active |= IFM_NONE; 277 return; 278 } 279 280 switch (physup & (PHY_SUP_SPEED1|PHY_SUP_SPEED0)) { 281 case PHY_SUP_SPEED1: 282 mii->mii_media_active |= IFM_1000_T; 283 gtsr = PHY_READ(sc, MII_100T2SR); 284 if (gtsr & GTSR_MS_RES) 285 mii->mii_media_active |= IFM_ETH_MASTER; 286 break; 287 288 case PHY_SUP_SPEED0: 289 mii->mii_media_active |= IFM_100_TX; 290 break; 291 292 case 0: 293 mii->mii_media_active |= IFM_10_T; 294 break; 295 296 default: 297 mii->mii_media_active |= IFM_NONE; 298 mii->mii_media_status = 0; 299 } 300 if (physup & PHY_SUP_DUPLEX) 301 mii->mii_media_active |= 302 IFM_FDX | mii_phy_flowstatus(sc); 303 else 304 mii->mii_media_active |= IFM_HDX; 305 } else 306 mii->mii_media_active = ife->ifm_media; 307 } 308 309 void 310 gphyter_reset(struct mii_softc *sc) 311 { 312 int reg, i; 313 314 if (sc->mii_flags & MIIF_NOISOLATE) 315 reg = BMCR_RESET; 316 else 317 reg = BMCR_RESET | BMCR_ISO; 318 PHY_WRITE(sc, MII_BMCR, reg); 319 320 /* 321 * It is best to allow a little time for the reset to settle 322 * in before we start polling the BMCR again. Notably, the 323 * DP83840A manual states that there should be a 500us delay 324 * between asserting software reset and attempting MII serial 325 * operations. Also, a DP83815 can get into a bad state on 326 * cable removal and reinsertion if we do not delay here. 327 */ 328 delay(500); 329 330 /* Wait another 100ms for it to complete. */ 331 for (i = 0; i < 100; i++) { 332 reg = PHY_READ(sc, MII_BMCR); 333 if ((reg & BMCR_RESET) == 0) 334 break; 335 delay(1000); 336 } 337 338 if (sc->mii_inst != 0 && ((sc->mii_flags & MIIF_NOISOLATE) == 0)) 339 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 340 } 341
Indexes created Sun Sep 28 16:09:52 GMT 2025