1 /* $OpenBSD: icsphy.c,v 1.11 2003/07/09 02:09:08 krw Exp $ */ 2 /* $NetBSD: icsphy.c,v 1.17 2000/02/02 23:34:56 thorpej Exp $ */ 3 4 /*- 5 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 /* 42 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 3. All advertising materials mentioning features or use of this software 53 * must display the following acknowledgement: 54 * This product includes software developed by Manuel Bouyer. 55 * 4. The name of the author may not be used to endorse or promote products 56 * derived from this software without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 61 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 62 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 63 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 64 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 65 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 66 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 67 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 68 */ 69 70 /* 71 * driver for Integrated Circuit Systems' ICS1890 ethernet 10/100 PHY 72 * and its successor ICS1892 73 * datasheet from www.icst.com 74 */ 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/kernel.h> 79 #include <sys/device.h> 80 #include <sys/malloc.h> 81 #include <sys/socket.h> 82 83 #include <net/if.h> 84 #include <net/if_media.h> 85 86 #include <dev/mii/mii.h> 87 #include <dev/mii/miivar.h> 88 #include <dev/mii/miidevs.h> 89 90 #include <dev/mii/icsphyreg.h> 91 92 int icsphymatch(struct device *, void *, void *); 93 void icsphyattach(struct device *, struct device *, void *); 94 95 struct cfattach icsphy_ca = { 96 sizeof(struct mii_softc), icsphymatch, icsphyattach, mii_phy_detach, 97 mii_phy_activate 98 }; 99 100 struct cfdriver icsphy_cd = { 101 NULL, "icsphy", DV_DULL 102 }; 103 104 int icsphy_service(struct mii_softc *, struct mii_data *, int); 105 void icsphy_reset(struct mii_softc *); 106 void icsphy_status(struct mii_softc *); 107 108 int 109 icsphymatch(parent, match, aux) 110 struct device *parent; 111 void *match; 112 void *aux; 113 { 114 struct mii_attach_args *ma = aux; 115 116 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxICS && 117 MII_MODEL(ma->mii_id2) == MII_MODEL_xxICS_1890) 118 return (10); 119 120 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxICS && 121 MII_MODEL(ma->mii_id2) == MII_MODEL_xxICS_1892) 122 return (10); 123 124 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxICS && 125 MII_MODEL(ma->mii_id2) == MII_MODEL_xxICS_1893) 126 return (10); 127 128 return (0); 129 } 130 131 void 132 icsphyattach(parent, self, aux) 133 struct device *parent, *self; 134 void *aux; 135 { 136 struct mii_softc *sc = (struct mii_softc *)self; 137 struct mii_attach_args *ma = aux; 138 struct mii_data *mii = ma->mii_data; 139 char *model = "?"; 140 141 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxICS) 142 switch (MII_MODEL(ma->mii_id2)) { 143 case MII_MODEL_xxICS_1890: 144 model = MII_STR_xxICS_1890; 145 break; 146 case MII_MODEL_xxICS_1892: 147 model = MII_STR_xxICS_1892; 148 break; 149 case MII_MODEL_xxICS_1893: 150 model = MII_STR_xxICS_1893; 151 break; 152 } 153 154 printf(": %s, rev. %d\n", model, MII_REV(ma->mii_id2)); 155 156 sc->mii_inst = mii->mii_instance; 157 sc->mii_phy = ma->mii_phyno; 158 sc->mii_service = icsphy_service; 159 sc->mii_status = icsphy_status; 160 sc->mii_pdata = mii; 161 sc->mii_flags = mii->mii_flags; 162 163 icsphy_reset(sc); 164 165 sc->mii_capabilities = 166 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 167 if (sc->mii_capabilities & BMSR_MEDIAMASK) 168 mii_phy_add_media(sc); 169 } 170 171 int 172 icsphy_service(sc, mii, cmd) 173 struct mii_softc *sc; 174 struct mii_data *mii; 175 int cmd; 176 { 177 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 178 int reg; 179 180 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 181 return (ENXIO); 182 183 switch (cmd) { 184 case MII_POLLSTAT: 185 /* 186 * If we're not polling our PHY instance, just return. 187 */ 188 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 189 return (0); 190 break; 191 192 case MII_MEDIACHG: 193 /* 194 * If the media indicates a different PHY instance, 195 * isolate ourselves. 196 */ 197 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 198 reg = PHY_READ(sc, MII_BMCR); 199 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 200 return (0); 201 } 202 203 /* 204 * If the interface is not up, don't do anything. 205 */ 206 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 207 break; 208 209 mii_phy_setmedia(sc); 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 if (mii_phy_tick(sc) == EJUSTRETURN) 220 return (0); 221 break; 222 223 case MII_DOWN: 224 mii_phy_down(sc); 225 return (0); 226 } 227 228 /* Update the media status. */ 229 mii_phy_status(sc); 230 231 /* Callback if something changed. */ 232 mii_phy_update(sc, cmd); 233 return (0); 234 } 235 236 void 237 icsphy_status(sc) 238 struct mii_softc *sc; 239 { 240 struct mii_data *mii = sc->mii_pdata; 241 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 242 int bmcr, qpr; 243 244 mii->mii_media_status = IFM_AVALID; 245 mii->mii_media_active = IFM_ETHER; 246 247 /* 248 * Don't get link from the BMSR. It's available in the QPR, 249 * and we have to read it twice to unlatch it anyhow. This 250 * gives us fewer register reads. 251 */ 252 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 253 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 254 255 if (qpr & QPR_LINK) 256 mii->mii_media_status |= IFM_ACTIVE; 257 258 bmcr = PHY_READ(sc, MII_BMCR); 259 if (bmcr & BMCR_ISO) { 260 mii->mii_media_active |= IFM_NONE; 261 mii->mii_media_status = 0; 262 return; 263 } 264 265 if (bmcr & BMCR_LOOP) 266 mii->mii_media_active |= IFM_LOOP; 267 268 if (bmcr & BMCR_AUTOEN) { 269 if ((qpr & QPR_ACOMP) == 0) { 270 /* Erg, still trying, I guess... */ 271 mii->mii_media_active |= IFM_NONE; 272 return; 273 } 274 if (qpr & QPR_SPEED) 275 mii->mii_media_active |= IFM_100_TX; 276 else 277 mii->mii_media_active |= IFM_10_T; 278 if (qpr & QPR_FDX) 279 mii->mii_media_active |= IFM_FDX; 280 } else 281 mii->mii_media_active = ife->ifm_media; 282 } 283 284 void 285 icsphy_reset(sc) 286 struct mii_softc *sc; 287 { 288 289 mii_phy_reset(sc); 290 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_10TPROT|ECR2_Q10T); 291 292 /* 293 * XXX the ICS1892 doesn't set the BMCR properly after 294 * XXX reset, which breaks autonegotiation. 295 */ 296 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 297 298 } 299