sqphy.c revision 1.7
1 /* $NetBSD: sqphy.c,v 1.7 1998/11/05 04:01:33 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 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 Seeq 80220/80221 and 80223 10/100 ethernet PHYs 71 * datasheet from www.seeq.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 81 #include <net/if.h> 82 #include <net/if_media.h> 83 84 #include <dev/mii/mii.h> 85 #include <dev/mii/miivar.h> 86 #include <dev/mii/miidevs.h> 87 88 #include <dev/mii/sqphyreg.h> 89 90 int sqphymatch __P((struct device *, struct cfdata *, void *)); 91 void sqphyattach __P((struct device *, struct device *, void *)); 92 93 struct cfattach sqphy_ca = { 94 sizeof(struct mii_softc), sqphymatch, sqphyattach 95 }; 96 97 int sqphy_service __P((struct mii_softc *, struct mii_data *, int)); 98 void sqphy_status __P((struct mii_softc *)); 99 100 int 101 sqphymatch(parent, match, aux) 102 struct device *parent; 103 struct cfdata *match; 104 void *aux; 105 { 106 struct mii_attach_args *ma = aux; 107 108 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_SEEQ && 109 MII_MODEL(ma->mii_id2) == MII_MODEL_SEEQ_80220) 110 return (10); 111 112 return (0); 113 } 114 115 void 116 sqphyattach(parent, self, aux) 117 struct device *parent, *self; 118 void *aux; 119 { 120 struct mii_softc *sc = (struct mii_softc *)self; 121 struct mii_attach_args *ma = aux; 122 struct mii_data *mii = ma->mii_data; 123 124 printf(": %s, rev. %d\n", MII_STR_SEEQ_80220, 125 MII_REV(ma->mii_id2)); 126 127 sc->mii_inst = mii->mii_instance; 128 sc->mii_phy = ma->mii_phyno; 129 sc->mii_service = sqphy_service; 130 sc->mii_pdata = mii; 131 132 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 133 134 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 135 BMCR_ISO); 136 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 137 BMCR_LOOP|BMCR_S100); 138 139 mii_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_add_media(mii, sc->mii_capabilities, 148 sc->mii_inst); 149 printf("\n"); 150 #undef ADD 151 } 152 153 int 154 sqphy_service(sc, mii, cmd) 155 struct mii_softc *sc; 156 struct mii_data *mii; 157 int cmd; 158 { 159 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 160 int reg; 161 162 switch (cmd) { 163 case MII_POLLSTAT: 164 /* 165 * If we're not polling our PHY instance, just return. 166 */ 167 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 168 return (0); 169 break; 170 171 case MII_MEDIACHG: 172 /* 173 * If the media indicates a different PHY instance, 174 * isolate ourselves. 175 */ 176 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 177 reg = PHY_READ(sc, MII_BMCR); 178 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 179 return (0); 180 } 181 182 /* 183 * If the interface is not up, don't do anything. 184 */ 185 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 186 break; 187 188 switch (IFM_SUBTYPE(ife->ifm_media)) { 189 case IFM_AUTO: 190 /* 191 * If we're already in auto mode, just return. 192 */ 193 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 194 return (0); 195 (void) mii_phy_auto(sc); 196 break; 197 case IFM_100_T4: 198 /* 199 * XXX Not supported as a manual setting right now. 200 */ 201 return (EINVAL); 202 default: 203 /* 204 * BMCR data is stored in the ifmedia entry. 205 */ 206 PHY_WRITE(sc, MII_ANAR, 207 mii_anar(ife->ifm_media)); 208 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 209 } 210 break; 211 212 case MII_TICK: 213 /* 214 * If we're not currently selected, just return. 215 */ 216 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 217 return (0); 218 219 /* 220 * Only used for autonegotiation. 221 */ 222 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 223 return (0); 224 225 /* 226 * Is the interface even up? 227 */ 228 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 229 return (0); 230 231 /* 232 * Check to see if we have link. If we do, we don't 233 * need to restart the autonegotiation process. Read 234 * the BMSR twice in case it's latched. 235 */ 236 reg = PHY_READ(sc, MII_BMSR) | 237 PHY_READ(sc, MII_BMSR); 238 if (reg & BMSR_LINK) 239 return (0); 240 241 /* 242 * Only retry autonegotiation every 5 seconds. 243 */ 244 if (++sc->mii_ticks != 5) 245 return (0); 246 247 sc->mii_ticks = 0; 248 mii_phy_reset(sc); 249 (void) mii_phy_auto(sc); 250 break; 251 } 252 253 /* Update the media status. */ 254 sqphy_status(sc); 255 256 /* Callback if something changed. */ 257 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 258 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 259 sc->mii_active = mii->mii_media_active; 260 } 261 return (0); 262 } 263 264 void 265 sqphy_status(sc) 266 struct mii_softc *sc; 267 { 268 struct mii_data *mii = sc->mii_pdata; 269 int bmsr, bmcr, status; 270 271 mii->mii_media_status = IFM_AVALID; 272 mii->mii_media_active = IFM_ETHER; 273 274 bmsr = PHY_READ(sc, MII_BMSR) | 275 PHY_READ(sc, MII_BMSR); 276 if (bmsr & BMSR_LINK) 277 mii->mii_media_status |= IFM_ACTIVE; 278 279 bmcr = PHY_READ(sc, MII_BMCR); 280 if (bmcr & BMCR_ISO) { 281 mii->mii_media_active |= IFM_NONE; 282 mii->mii_media_status = 0; 283 return; 284 } 285 286 if (bmcr & BMCR_LOOP) 287 mii->mii_media_active |= IFM_LOOP; 288 289 if (bmcr & BMCR_AUTOEN) { 290 if ((bmsr & BMSR_ACOMP) == 0) { 291 /* Erg, still trying, I guess... */ 292 mii->mii_media_active |= IFM_NONE; 293 return; 294 } 295 status = PHY_READ(sc, MII_SQPHY_STATUS); 296 if (status & STATUS_SPD_DET) 297 mii->mii_media_active |= IFM_100_TX; 298 else 299 mii->mii_media_active |= IFM_10_T; 300 if (status & STATUS_DPLX_DET) 301 mii->mii_media_active |= IFM_FDX; 302 } else { 303 if (bmcr & BMCR_S100) 304 mii->mii_media_active |= IFM_100_TX; 305 else 306 mii->mii_media_active |= IFM_10_T; 307 if (bmcr & BMCR_FDX) 308 mii->mii_media_active |= IFM_FDX; 309 } 310 } 311
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