1 /* $NetBSD: icsphy.c,v 1.8 1998/11/05 04:08:01 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 Integrated Circuit Systems' ICS1890 ethernet 10/100 PHY 71 * datasheet from www.icst.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/icsphyreg.h> 89 90 int icsphymatch __P((struct device *, struct cfdata *, void *)); 91 void icsphyattach __P((struct device *, struct device *, void *)); 92 93 struct cfattach icsphy_ca = { 94 sizeof(struct mii_softc), icsphymatch, icsphyattach 95 }; 96 97 int icsphy_service __P((struct mii_softc *, struct mii_data *, int)); 98 void icsphy_reset __P((struct mii_softc *)); 99 void icsphy_status __P((struct mii_softc *)); 100 101 int 102 icsphymatch(parent, match, aux) 103 struct device *parent; 104 struct cfdata *match; 105 void *aux; 106 { 107 struct mii_attach_args *ma = aux; 108 109 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_ICS && 110 MII_MODEL(ma->mii_id2) == MII_MODEL_ICS_1890) 111 return (10); 112 113 return (0); 114 } 115 116 void 117 icsphyattach(parent, self, aux) 118 struct device *parent, *self; 119 void *aux; 120 { 121 struct mii_softc *sc = (struct mii_softc *)self; 122 struct mii_attach_args *ma = aux; 123 struct mii_data *mii = ma->mii_data; 124 125 printf(": %s, rev. %d\n", MII_STR_ICS_1890, 126 MII_REV(ma->mii_id2)); 127 128 sc->mii_inst = mii->mii_instance; 129 sc->mii_phy = ma->mii_phyno; 130 sc->mii_service = icsphy_service; 131 sc->mii_pdata = mii; 132 133 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 134 135 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 136 BMCR_ISO); 137 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 138 BMCR_LOOP|BMCR_S100); 139 140 icsphy_reset(sc); 141 142 sc->mii_capabilities = 143 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 144 printf("%s: ", sc->mii_dev.dv_xname); 145 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 146 printf("no media present"); 147 else 148 mii_add_media(mii, sc->mii_capabilities, 149 sc->mii_inst); 150 printf("\n"); 151 #undef ADD 152 } 153 154 int 155 icsphy_service(sc, mii, cmd) 156 struct mii_softc *sc; 157 struct mii_data *mii; 158 int cmd; 159 { 160 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 161 int reg; 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 switch (IFM_SUBTYPE(ife->ifm_media)) { 190 case IFM_AUTO: 191 /* 192 * If we're already in auto mode, just return. 193 */ 194 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 195 return (0); 196 (void) mii_phy_auto(sc); 197 break; 198 case IFM_100_T4: 199 /* 200 * XXX Not supported as a manual setting right now. 201 */ 202 return (EINVAL); 203 default: 204 /* 205 * BMCR data is stored in the ifmedia entry. 206 */ 207 PHY_WRITE(sc, MII_ANAR, 208 mii_anar(ife->ifm_media)); 209 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 210 } 211 break; 212 213 case MII_TICK: 214 /* 215 * If we're not currently selected, just return. 216 */ 217 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 218 return (0); 219 220 /* 221 * Only used for autonegotiation. 222 */ 223 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 224 return (0); 225 226 /* 227 * Is the interface even up? 228 */ 229 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 230 return (0); 231 232 /* 233 * The ICS1890's autonegotiation doesn't need to be 234 * kicked; it continues in the background. 235 */ 236 break; 237 } 238 239 /* Update the media status. */ 240 icsphy_status(sc); 241 242 /* Callback if something changed. */ 243 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 244 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 245 sc->mii_active = mii->mii_media_active; 246 } 247 return (0); 248 } 249 250 void 251 icsphy_status(sc) 252 struct mii_softc *sc; 253 { 254 struct mii_data *mii = sc->mii_pdata; 255 int bmcr, qpr; 256 257 mii->mii_media_status = IFM_AVALID; 258 mii->mii_media_active = IFM_ETHER; 259 260 /* 261 * Don't get link from the BMSR. It's available in the QPR, 262 * and we have to read it twice to unlatch it anyhow. This 263 * gives us fewer register reads. 264 */ 265 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 266 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 267 268 if (qpr & QPR_LINK) 269 mii->mii_media_status |= IFM_ACTIVE; 270 271 bmcr = PHY_READ(sc, MII_BMCR); 272 if (bmcr & BMCR_ISO) { 273 mii->mii_media_active |= IFM_NONE; 274 mii->mii_media_status = 0; 275 return; 276 } 277 278 if (bmcr & BMCR_LOOP) 279 mii->mii_media_active |= IFM_LOOP; 280 281 if (bmcr & BMCR_AUTOEN) { 282 if ((qpr & QPR_ACOMP) == 0) { 283 /* Erg, still trying, I guess... */ 284 mii->mii_media_active |= IFM_NONE; 285 return; 286 } 287 if (qpr & QPR_SPEED) 288 mii->mii_media_active |= IFM_100_TX; 289 else 290 mii->mii_media_active |= IFM_10_T; 291 if (qpr & QPR_FDX) 292 mii->mii_media_active |= IFM_FDX; 293 } else 294 mii->mii_media_active = mii_media_from_bmcr(bmcr); 295 } 296 297 void 298 icsphy_reset(sc) 299 struct mii_softc *sc; 300 { 301 302 mii_phy_reset(sc); 303 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_10TPROT|ECR2_Q10T); 304 } 305