nsphyter.c revision 1.28
1 /* $NetBSD: nsphyter.c,v 1.28 2008/01/20 07:58:19 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 * 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 DP83843 `PHYTER' ethernet 10/100 PHY 71 * Data Sheet available from www.national.com 72 * 73 * We also support the DP83815 MacPHYER internal PHY since, for our 74 * purposes, they are compatible. 75 */ 76 77 #include <sys/cdefs.h> 78 __KERNEL_RCSID(0, "$NetBSD: nsphyter.c,v 1.28 2008/01/20 07:58:19 msaitoh 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/nsphyterreg.h> 95 96 static int nsphytermatch(struct device *, struct cfdata *, void *); 97 static void nsphyterattach(struct device *, struct device *, void *); 98 99 CFATTACH_DECL(nsphyter, sizeof(struct mii_softc), 100 nsphytermatch, nsphyterattach, mii_phy_detach, mii_phy_activate); 101 102 static int nsphyter_service(struct mii_softc *, struct mii_data *, int); 103 static void nsphyter_status(struct mii_softc *); 104 static void nsphyter_reset(struct mii_softc *); 105 106 static const struct mii_phy_funcs nsphyter_funcs = { 107 nsphyter_service, nsphyter_status, nsphyter_reset, 108 }; 109 110 static const struct mii_phydesc nsphyters[] = { 111 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83843, 112 MII_STR_xxNATSEMI_DP83843 }, 113 114 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83847, 115 MII_STR_xxNATSEMI_DP83847 }, 116 117 { MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83815, 118 MII_STR_xxNATSEMI_DP83815 }, 119 120 { 0, 0, 121 NULL }, 122 }; 123 124 static int 125 nsphytermatch(struct device *parent, struct cfdata *match, 126 void *aux) 127 { 128 struct mii_attach_args *ma = aux; 129 130 if (mii_phy_match(ma, nsphyters) != NULL) 131 return (10); 132 133 return (0); 134 } 135 136 static void 137 nsphyterattach(struct device *parent, struct device *self, void *aux) 138 { 139 struct mii_softc *sc = (struct mii_softc *)self; 140 struct mii_attach_args *ma = aux; 141 struct mii_data *mii = ma->mii_data; 142 const struct mii_phydesc *mpd; 143 144 mpd = mii_phy_match(ma, nsphyters); 145 aprint_naive(": Media interface\n"); 146 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 147 148 sc->mii_inst = mii->mii_instance; 149 sc->mii_phy = ma->mii_phyno; 150 sc->mii_funcs = &nsphyter_funcs; 151 sc->mii_pdata = mii; 152 sc->mii_flags = ma->mii_flags; 153 sc->mii_anegticks = MII_ANEGTICKS; 154 155 PHY_RESET(sc); 156 157 sc->mii_capabilities = 158 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 159 aprint_normal("%s: ", sc->mii_dev.dv_xname); 160 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 161 aprint_error("no media present"); 162 else 163 mii_phy_add_media(sc); 164 aprint_normal("\n"); 165 166 if (!pmf_device_register(self, NULL, mii_phy_resume)) 167 aprint_error_dev(self, "couldn't establish power handler\n"); 168 } 169 170 static int 171 nsphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 172 { 173 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 174 int reg; 175 176 switch (cmd) { 177 case MII_POLLSTAT: 178 /* 179 * If we're not polling our PHY instance, just return. 180 */ 181 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 182 return (0); 183 break; 184 185 case MII_MEDIACHG: 186 /* 187 * If the media indicates a different PHY instance, 188 * isolate ourselves. 189 */ 190 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 191 reg = PHY_READ(sc, MII_BMCR); 192 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 193 return (0); 194 } 195 196 /* 197 * If the interface is not up, don't do anything. 198 */ 199 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 200 break; 201 202 mii_phy_setmedia(sc); 203 break; 204 205 case MII_TICK: 206 /* 207 * If we're not currently selected, just return. 208 */ 209 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 210 return (0); 211 212 if (mii_phy_tick(sc) == EJUSTRETURN) 213 return (0); 214 break; 215 216 case MII_DOWN: 217 mii_phy_down(sc); 218 return (0); 219 } 220 221 /* Update the media status. */ 222 mii_phy_status(sc); 223 224 /* Callback if something changed. */ 225 mii_phy_update(sc, cmd); 226 return (0); 227 } 228 229 static void 230 nsphyter_status(struct mii_softc *sc) 231 { 232 struct mii_data *mii = sc->mii_pdata; 233 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 234 int bmsr, bmcr, physts; 235 236 mii->mii_media_status = IFM_AVALID; 237 mii->mii_media_active = IFM_ETHER; 238 239 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 240 physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS); 241 242 if (physts & PHYSTS_LINK) 243 mii->mii_media_status |= IFM_ACTIVE; 244 245 bmcr = PHY_READ(sc, MII_BMCR); 246 if (bmcr & BMCR_ISO) { 247 mii->mii_media_active |= IFM_NONE; 248 mii->mii_media_status = 0; 249 return; 250 } 251 252 if (bmcr & BMCR_LOOP) 253 mii->mii_media_active |= IFM_LOOP; 254 255 if (bmcr & BMCR_AUTOEN) { 256 /* 257 * The media status bits are only valid of autonegotiation 258 * has completed (or it's disabled). 259 */ 260 if ((bmsr & BMSR_ACOMP) == 0) { 261 /* Erg, still trying, I guess... */ 262 mii->mii_media_active |= IFM_NONE; 263 return; 264 } 265 266 if (physts & PHYSTS_SPEED10) 267 mii->mii_media_active |= IFM_10_T; 268 else 269 mii->mii_media_active |= IFM_100_TX; 270 if (physts & PHYSTS_DUPLEX) 271 mii->mii_media_active |= 272 IFM_FDX | mii_phy_flowstatus(sc); 273 } else 274 mii->mii_media_active = ife->ifm_media; 275 } 276 277 void 278 nsphyter_reset(struct mii_softc *sc) 279 { 280 int reg, i; 281 282 if (sc->mii_flags & MIIF_NOISOLATE) 283 reg = BMCR_RESET; 284 else 285 reg = BMCR_RESET | BMCR_ISO; 286 PHY_WRITE(sc, MII_BMCR, reg); 287 288 /* 289 * It is best to allow a little time for the reset to settle 290 * in before we start polling the BMCR again. Notably, the 291 * DP83840A manual states that there should be a 500us delay 292 * between asserting software reset and attempting MII serial 293 * operations. Also, a DP83815 can get into a bad state on 294 * cable removal and reinsertion if we do not delay here. 295 */ 296 delay(500); 297 298 /* Wait another 100ms for it to complete. */ 299 for (i = 0; i < 100; i++) { 300 reg = PHY_READ(sc, MII_BMCR); 301 if ((reg & BMCR_RESET) == 0) 302 break; 303 delay(1000); 304 } 305 306 if (sc->mii_inst != 0 && ((sc->mii_flags & MIIF_NOISOLATE) == 0)) 307 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 308 } 309
Indexes created Tue Sep 30 20:09:53 GMT 2025