nsphy.c revision 1.26
1 /* $NetBSD: nsphy.c,v 1.26 2000/03/06 20:56:57 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 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 DP83840A ethernet 10/100 PHY 71 * Data Sheet available from www.national.com 72 */ 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/kernel.h> 77 #include <sys/device.h> 78 #include <sys/malloc.h> 79 #include <sys/socket.h> 80 #include <sys/errno.h> 81 82 #include <net/if.h> 83 #include <net/if_media.h> 84 85 #include <dev/mii/mii.h> 86 #include <dev/mii/miivar.h> 87 #include <dev/mii/miidevs.h> 88 89 #include <dev/mii/nsphyreg.h> 90 91 int nsphymatch __P((struct device *, struct cfdata *, void *)); 92 void nsphyattach __P((struct device *, struct device *, void *)); 93 94 struct cfattach nsphy_ca = { 95 sizeof(struct mii_softc), nsphymatch, nsphyattach, mii_phy_detach, 96 mii_phy_activate 97 }; 98 99 int nsphy_service __P((struct mii_softc *, struct mii_data *, int)); 100 void nsphy_status __P((struct mii_softc *)); 101 102 int 103 nsphymatch(parent, match, aux) 104 struct device *parent; 105 struct cfdata *match; 106 void *aux; 107 { 108 struct mii_attach_args *ma = aux; 109 110 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_NATSEMI && 111 MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83840) 112 return (10); 113 114 return (0); 115 } 116 117 void 118 nsphyattach(parent, self, aux) 119 struct device *parent, *self; 120 void *aux; 121 { 122 struct mii_softc *sc = (struct mii_softc *)self; 123 struct mii_attach_args *ma = aux; 124 struct mii_data *mii = ma->mii_data; 125 126 printf(": %s, rev. %d\n", MII_STR_NATSEMI_DP83840, 127 MII_REV(ma->mii_id2)); 128 129 sc->mii_inst = mii->mii_instance; 130 sc->mii_phy = ma->mii_phyno; 131 sc->mii_service = nsphy_service; 132 sc->mii_status = nsphy_status; 133 sc->mii_pdata = mii; 134 sc->mii_flags = mii->mii_flags; 135 136 mii_phy_reset(sc); 137 138 sc->mii_capabilities = 139 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 140 printf("%s: ", sc->mii_dev.dv_xname); 141 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 142 printf("no media present"); 143 else 144 mii_phy_add_media(sc); 145 printf("\n"); 146 } 147 148 int 149 nsphy_service(sc, mii, cmd) 150 struct mii_softc *sc; 151 struct mii_data *mii; 152 int cmd; 153 { 154 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 155 int reg; 156 157 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 158 return (ENXIO); 159 160 switch (cmd) { 161 case MII_POLLSTAT: 162 /* 163 * If we're not polling our PHY instance, just return. 164 */ 165 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 166 return (0); 167 break; 168 169 case MII_MEDIACHG: 170 /* 171 * If the media indicates a different PHY instance, 172 * isolate ourselves. 173 */ 174 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 175 reg = PHY_READ(sc, MII_BMCR); 176 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 177 return (0); 178 } 179 180 /* 181 * If the interface is not up, don't do anything. 182 */ 183 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 184 break; 185 186 reg = PHY_READ(sc, MII_NSPHY_PCR); 187 188 /* 189 * Set up the PCR to use LED4 to indicate full-duplex 190 * in both 10baseT and 100baseTX modes. 191 */ 192 reg |= PCR_LED4MODE; 193 194 /* 195 * Make sure Carrier Intgrity Monitor function is 196 * disabled (normal for Node operation, but sometimes 197 * it's not set?!) 198 */ 199 reg |= PCR_CIMDIS; 200 201 /* 202 * Make sure "force link good" is set to normal mode. 203 * It's only intended for debugging. 204 */ 205 reg |= PCR_FLINK100; 206 207 #if 0 208 /* 209 * Mystery bits which are supposedly `reserved', 210 * but we seem to need to set them when the PHY 211 * is connected to some interfaces! 212 */ 213 reg |= 0x0100 | 0x0400; 214 #endif 215 216 PHY_WRITE(sc, MII_NSPHY_PCR, reg); 217 218 mii_phy_setmedia(sc); 219 break; 220 221 case MII_TICK: 222 /* 223 * If we're not currently selected, just return. 224 */ 225 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 226 return (0); 227 228 if (mii_phy_tick(sc) == EJUSTRETURN) 229 return (0); 230 break; 231 232 case MII_DOWN: 233 mii_phy_down(sc); 234 return (0); 235 } 236 237 /* Update the media status. */ 238 mii_phy_status(sc); 239 240 /* Callback if something changed. */ 241 mii_phy_update(sc, cmd); 242 return (0); 243 } 244 245 void 246 nsphy_status(sc) 247 struct mii_softc *sc; 248 { 249 struct mii_data *mii = sc->mii_pdata; 250 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 251 int bmsr, bmcr, par, anlpar; 252 253 mii->mii_media_status = IFM_AVALID; 254 mii->mii_media_active = IFM_ETHER; 255 256 bmsr = PHY_READ(sc, MII_BMSR) | 257 PHY_READ(sc, MII_BMSR); 258 if (bmsr & BMSR_LINK) 259 mii->mii_media_status |= IFM_ACTIVE; 260 261 bmcr = PHY_READ(sc, MII_BMCR); 262 if (bmcr & BMCR_ISO) { 263 mii->mii_media_active |= IFM_NONE; 264 mii->mii_media_status = 0; 265 return; 266 } 267 268 if (bmcr & BMCR_LOOP) 269 mii->mii_media_active |= IFM_LOOP; 270 271 if (bmcr & BMCR_AUTOEN) { 272 /* 273 * The PAR status bits are only valid of autonegotiation 274 * has completed (or it's disabled). 275 */ 276 if ((bmsr & BMSR_ACOMP) == 0) { 277 /* Erg, still trying, I guess... */ 278 mii->mii_media_active |= IFM_NONE; 279 return; 280 } 281 282 /* 283 * Argh. The PAR doesn't seem to indicate duplex mode 284 * properly! Determine media based on link partner's 285 * advertised capabilities. 286 */ 287 if (PHY_READ(sc, MII_ANER) & ANER_LPAN) { 288 anlpar = PHY_READ(sc, MII_ANAR) & 289 PHY_READ(sc, MII_ANLPAR); 290 if (anlpar & ANLPAR_T4) 291 mii->mii_media_active |= IFM_100_T4; 292 else if (anlpar & ANLPAR_TX_FD) 293 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 294 else if (anlpar & ANLPAR_TX) 295 mii->mii_media_active |= IFM_100_TX; 296 else if (anlpar & ANLPAR_10_FD) 297 mii->mii_media_active |= IFM_10_T|IFM_FDX; 298 else if (anlpar & ANLPAR_10) 299 mii->mii_media_active |= IFM_10_T; 300 else 301 mii->mii_media_active |= IFM_NONE; 302 return; 303 } 304 305 /* 306 * Link partner is not capable of autonegotiation. 307 * We will never be in full-duplex mode if this is 308 * the case, so reading the PAR is OK. 309 */ 310 par = PHY_READ(sc, MII_NSPHY_PAR); 311 if (par & PAR_10) 312 mii->mii_media_active |= IFM_10_T; 313 else 314 mii->mii_media_active |= IFM_100_TX; 315 #if 0 316 if (par & PAR_FDX) 317 mii->mii_media_active |= IFM_FDX; 318 #endif 319 } else 320 mii->mii_media_active = ife->ifm_media; 321 } 322
Indexes created Thu Oct 23 22:10:10 GMT 2025