nsphy.c revision 1.18.2.2
1 /* $NetBSD: nsphy.c,v 1.18.2.2 2001/04/21 17:49:04 bouyer Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 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 const struct mii_phy_funcs nsphy_funcs = { 103 nsphy_service, nsphy_status, mii_phy_reset, 104 }; 105 106 int 107 nsphymatch(parent, match, aux) 108 struct device *parent; 109 struct cfdata *match; 110 void *aux; 111 { 112 struct mii_attach_args *ma = aux; 113 114 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxNATSEMI && 115 MII_MODEL(ma->mii_id2) == MII_MODEL_xxNATSEMI_DP83840) 116 return (10); 117 118 return (0); 119 } 120 121 void 122 nsphyattach(parent, self, aux) 123 struct device *parent, *self; 124 void *aux; 125 { 126 struct mii_softc *sc = (struct mii_softc *)self; 127 struct mii_attach_args *ma = aux; 128 struct mii_data *mii = ma->mii_data; 129 130 printf(": %s, rev. %d\n", MII_STR_xxNATSEMI_DP83840, 131 MII_REV(ma->mii_id2)); 132 133 sc->mii_inst = mii->mii_instance; 134 sc->mii_phy = ma->mii_phyno; 135 sc->mii_funcs = &nsphy_funcs; 136 sc->mii_pdata = mii; 137 sc->mii_flags = mii->mii_flags; 138 139 PHY_RESET(sc); 140 141 sc->mii_capabilities = 142 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 143 printf("%s: ", sc->mii_dev.dv_xname); 144 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 145 printf("no media present"); 146 else 147 mii_phy_add_media(sc); 148 printf("\n"); 149 } 150 151 int 152 nsphy_service(sc, mii, cmd) 153 struct mii_softc *sc; 154 struct mii_data *mii; 155 int cmd; 156 { 157 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 158 int reg; 159 160 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 161 return (ENXIO); 162 163 switch (cmd) { 164 case MII_POLLSTAT: 165 /* 166 * If we're not polling our PHY instance, just return. 167 */ 168 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 169 return (0); 170 break; 171 172 case MII_MEDIACHG: 173 /* 174 * If the media indicates a different PHY instance, 175 * isolate ourselves. 176 */ 177 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 178 reg = PHY_READ(sc, MII_BMCR); 179 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 180 return (0); 181 } 182 183 /* 184 * If the interface is not up, don't do anything. 185 */ 186 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 187 break; 188 189 reg = PHY_READ(sc, MII_NSPHY_PCR); 190 191 /* 192 * Set up the PCR to use LED4 to indicate full-duplex 193 * in both 10baseT and 100baseTX modes. 194 */ 195 reg |= PCR_LED4MODE; 196 197 /* 198 * Make sure Carrier Intgrity Monitor function is 199 * disabled (normal for Node operation, but sometimes 200 * it's not set?!) 201 */ 202 reg |= PCR_CIMDIS; 203 204 /* 205 * Make sure "force link good" is set to normal mode. 206 * It's only intended for debugging. 207 */ 208 reg |= PCR_FLINK100; 209 210 /* 211 * Mystery bits which are supposedly `reserved', 212 * but we seem to need to set them when the PHY 213 * is connected to some interfaces: 214 * 215 * 0x0400 is needed for fxp 216 * (Intel EtherExpress Pro 10+/100B, 82557 chip) 217 * (nsphy with a DP83840 chip) 218 * 0x0100 may be needed for some other card 219 */ 220 reg |= 0x0100 | 0x0400; 221 222 PHY_WRITE(sc, MII_NSPHY_PCR, reg); 223 224 mii_phy_setmedia(sc); 225 break; 226 227 case MII_TICK: 228 /* 229 * If we're not currently selected, just return. 230 */ 231 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 232 return (0); 233 234 if (mii_phy_tick(sc) == EJUSTRETURN) 235 return (0); 236 break; 237 238 case MII_DOWN: 239 mii_phy_down(sc); 240 return (0); 241 } 242 243 /* Update the media status. */ 244 mii_phy_status(sc); 245 246 /* Callback if something changed. */ 247 mii_phy_update(sc, cmd); 248 return (0); 249 } 250 251 void 252 nsphy_status(sc) 253 struct mii_softc *sc; 254 { 255 struct mii_data *mii = sc->mii_pdata; 256 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 257 int bmsr, bmcr, par, anlpar; 258 259 mii->mii_media_status = IFM_AVALID; 260 mii->mii_media_active = IFM_ETHER; 261 262 bmsr = PHY_READ(sc, MII_BMSR) | 263 PHY_READ(sc, MII_BMSR); 264 if (bmsr & BMSR_LINK) 265 mii->mii_media_status |= IFM_ACTIVE; 266 267 bmcr = PHY_READ(sc, MII_BMCR); 268 if (bmcr & BMCR_ISO) { 269 mii->mii_media_active |= IFM_NONE; 270 mii->mii_media_status = 0; 271 return; 272 } 273 274 if (bmcr & BMCR_LOOP) 275 mii->mii_media_active |= IFM_LOOP; 276 277 if (bmcr & BMCR_AUTOEN) { 278 /* 279 * The PAR status bits are only valid of autonegotiation 280 * has completed (or it's disabled). 281 */ 282 if ((bmsr & BMSR_ACOMP) == 0) { 283 /* Erg, still trying, I guess... */ 284 mii->mii_media_active |= IFM_NONE; 285 return; 286 } 287 288 /* 289 * Argh. The PAR doesn't seem to indicate duplex mode 290 * properly! Determine media based on link partner's 291 * advertised capabilities. 292 */ 293 if (PHY_READ(sc, MII_ANER) & ANER_LPAN) { 294 anlpar = PHY_READ(sc, MII_ANAR) & 295 PHY_READ(sc, MII_ANLPAR); 296 if (anlpar & ANLPAR_T4) 297 mii->mii_media_active |= IFM_100_T4; 298 else if (anlpar & ANLPAR_TX_FD) 299 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 300 else if (anlpar & ANLPAR_TX) 301 mii->mii_media_active |= IFM_100_TX; 302 else if (anlpar & ANLPAR_10_FD) 303 mii->mii_media_active |= IFM_10_T|IFM_FDX; 304 else if (anlpar & ANLPAR_10) 305 mii->mii_media_active |= IFM_10_T; 306 else 307 mii->mii_media_active |= IFM_NONE; 308 return; 309 } 310 311 /* 312 * Link partner is not capable of autonegotiation. 313 * We will never be in full-duplex mode if this is 314 * the case, so reading the PAR is OK. 315 */ 316 par = PHY_READ(sc, MII_NSPHY_PAR); 317 if (par & PAR_10) 318 mii->mii_media_active |= IFM_10_T; 319 else 320 mii->mii_media_active |= IFM_100_TX; 321 #if 0 322 if (par & PAR_FDX) 323 mii->mii_media_active |= IFM_FDX; 324 #endif 325 } else 326 mii->mii_media_active = ife->ifm_media; 327 } 328
Indexes created Wed Oct 22 13:09:56 GMT 2025