1 /* $OpenBSD: icsphy.c,v 1.7 2001/06/03 15:54:44 deraadt 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 __P((struct device *, void *, void *)); 93 void icsphyattach __P((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 __P((struct mii_softc *, struct mii_data *, int)); 105 void icsphy_reset __P((struct mii_softc *)); 106 void icsphy_status __P((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 return (0); 125 } 126 127 void 128 icsphyattach(parent, self, aux) 129 struct device *parent, *self; 130 void *aux; 131 { 132 struct mii_softc *sc = (struct mii_softc *)self; 133 struct mii_attach_args *ma = aux; 134 struct mii_data *mii = ma->mii_data; 135 136 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxICS && 137 MII_MODEL(ma->mii_id2) == MII_MODEL_xxICS_1890) 138 printf(": %s, rev. %d\n", MII_STR_xxICS_1890, 139 MII_REV(ma->mii_id2)); 140 141 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxICS && 142 MII_MODEL(ma->mii_id2) == MII_MODEL_xxICS_1892) 143 printf(": %s, rev. %d\n", MII_STR_xxICS_1892, 144 MII_REV(ma->mii_id2)); 145 146 sc->mii_inst = mii->mii_instance; 147 sc->mii_phy = ma->mii_phyno; 148 sc->mii_service = icsphy_service; 149 sc->mii_status = icsphy_status; 150 sc->mii_pdata = mii; 151 sc->mii_flags = mii->mii_flags; 152 153 icsphy_reset(sc); 154 155 sc->mii_capabilities = 156 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 157 if (sc->mii_capabilities & BMSR_MEDIAMASK) 158 mii_phy_add_media(sc); 159 } 160 161 int 162 icsphy_service(sc, mii, cmd) 163 struct mii_softc *sc; 164 struct mii_data *mii; 165 int cmd; 166 { 167 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 168 int reg; 169 170 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 171 return (ENXIO); 172 173 switch (cmd) { 174 case MII_POLLSTAT: 175 /* 176 * If we're not polling our PHY instance, just return. 177 */ 178 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 179 return (0); 180 break; 181 182 case MII_MEDIACHG: 183 /* 184 * If the media indicates a different PHY instance, 185 * isolate ourselves. 186 */ 187 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 188 reg = PHY_READ(sc, MII_BMCR); 189 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 190 return (0); 191 } 192 193 /* 194 * If the interface is not up, don't do anything. 195 */ 196 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 197 break; 198 199 mii_phy_setmedia(sc); 200 break; 201 202 case MII_TICK: 203 /* 204 * If we're not currently selected, just return. 205 */ 206 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 207 return (0); 208 209 if (mii_phy_tick(sc) == EJUSTRETURN) 210 return (0); 211 break; 212 213 case MII_DOWN: 214 mii_phy_down(sc); 215 return (0); 216 } 217 218 /* Update the media status. */ 219 mii_phy_status(sc); 220 221 /* Callback if something changed. */ 222 mii_phy_update(sc, cmd); 223 return (0); 224 } 225 226 void 227 icsphy_status(sc) 228 struct mii_softc *sc; 229 { 230 struct mii_data *mii = sc->mii_pdata; 231 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 232 int bmcr, qpr; 233 234 mii->mii_media_status = IFM_AVALID; 235 mii->mii_media_active = IFM_ETHER; 236 237 /* 238 * Don't get link from the BMSR. It's available in the QPR, 239 * and we have to read it twice to unlatch it anyhow. This 240 * gives us fewer register reads. 241 */ 242 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 243 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 244 245 if (qpr & QPR_LINK) 246 mii->mii_media_status |= IFM_ACTIVE; 247 248 bmcr = PHY_READ(sc, MII_BMCR); 249 if (bmcr & BMCR_ISO) { 250 mii->mii_media_active |= IFM_NONE; 251 mii->mii_media_status = 0; 252 return; 253 } 254 255 if (bmcr & BMCR_LOOP) 256 mii->mii_media_active |= IFM_LOOP; 257 258 if (bmcr & BMCR_AUTOEN) { 259 if ((qpr & QPR_ACOMP) == 0) { 260 /* Erg, still trying, I guess... */ 261 mii->mii_media_active |= IFM_NONE; 262 return; 263 } 264 if (qpr & QPR_SPEED) 265 mii->mii_media_active |= IFM_100_TX; 266 else 267 mii->mii_media_active |= IFM_10_T; 268 if (qpr & QPR_FDX) 269 mii->mii_media_active |= IFM_FDX; 270 } else 271 mii->mii_media_active = ife->ifm_media; 272 } 273 274 void 275 icsphy_reset(sc) 276 struct mii_softc *sc; 277 { 278 279 mii_phy_reset(sc); 280 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_10TPROT|ECR2_Q10T); 281 282 /* 283 * XXX the ICS1892 doesn't set the BMCR properly after 284 * XXX reset, which breaks autonegotiation. 285 */ 286 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 287 288 } 289