1 /* $OpenBSD: icsphy.c,v 1.21 2013/12/28 03:30:41 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 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58 /* 59 * driver for Integrated Circuit Systems' ICS1890 ethernet 10/100 PHY 60 * and its successor ICS1892 61 * datasheet from www.icst.com 62 */ 63 64 #include <sys/param.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/device.h> 68 #include <sys/socket.h> 69 70 #include <net/if.h> 71 #include <net/if_media.h> 72 73 #include <dev/mii/mii.h> 74 #include <dev/mii/miivar.h> 75 #include <dev/mii/miidevs.h> 76 77 #include <dev/mii/icsphyreg.h> 78 79 int icsphymatch(struct device *, void *, void *); 80 void icsphyattach(struct device *, struct device *, void *); 81 82 struct cfattach icsphy_ca = { 83 sizeof(struct mii_softc), icsphymatch, icsphyattach, mii_phy_detach 84 }; 85 86 struct cfdriver icsphy_cd = { 87 NULL, "icsphy", DV_DULL 88 }; 89 90 int icsphy_service(struct mii_softc *, struct mii_data *, int); 91 void icsphy_reset(struct mii_softc *); 92 void icsphy_status(struct mii_softc *); 93 94 const struct mii_phy_funcs icsphy_funcs = { 95 icsphy_service, icsphy_status, icsphy_reset, 96 }; 97 98 static const struct mii_phydesc icsphys[] = { 99 { MII_OUI_xxICS, MII_MODEL_xxICS_1890, 100 MII_STR_xxICS_1890 }, 101 { MII_OUI_xxICS, MII_MODEL_xxICS_1892, 102 MII_STR_xxICS_1892 }, 103 { MII_OUI_xxICS, MII_MODEL_xxICS_1893, 104 MII_STR_xxICS_1893 }, 105 106 { 0, 0, 107 NULL }, 108 109 }; 110 111 int 112 icsphymatch(struct device *parent, void *match, void *aux) 113 { 114 struct mii_attach_args *ma = aux; 115 116 if (mii_phy_match(ma, icsphys) != NULL) 117 return (10); 118 119 return (0); 120 } 121 122 void 123 icsphyattach(struct device *parent, struct device *self, void *aux) 124 { 125 struct mii_softc *sc = (struct mii_softc *)self; 126 struct mii_attach_args *ma = aux; 127 struct mii_data *mii = ma->mii_data; 128 const struct mii_phydesc *mpd; 129 130 mpd = mii_phy_match(ma, icsphys); 131 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 132 133 sc->mii_inst = mii->mii_instance; 134 sc->mii_phy = ma->mii_phyno; 135 sc->mii_funcs = &icsphy_funcs; 136 sc->mii_pdata = mii; 137 sc->mii_flags = ma->mii_flags; 138 139 PHY_RESET(sc); 140 141 sc->mii_capabilities = 142 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 143 if (sc->mii_capabilities & BMSR_MEDIAMASK) 144 mii_phy_add_media(sc); 145 } 146 147 int 148 icsphy_service(sc, mii, cmd) 149 struct mii_softc *sc; 150 struct mii_data *mii; 151 int cmd; 152 { 153 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 154 int reg; 155 156 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 157 return (ENXIO); 158 159 switch (cmd) { 160 case MII_POLLSTAT: 161 /* 162 * If we're not polling our PHY instance, just return. 163 */ 164 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 165 return (0); 166 break; 167 168 case MII_MEDIACHG: 169 /* 170 * If the media indicates a different PHY instance, 171 * isolate ourselves. 172 */ 173 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 174 reg = PHY_READ(sc, MII_BMCR); 175 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 176 return (0); 177 } 178 179 /* 180 * If the interface is not up, don't do anything. 181 */ 182 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 183 break; 184 185 mii_phy_setmedia(sc); 186 break; 187 188 case MII_TICK: 189 /* 190 * If we're not currently selected, just return. 191 */ 192 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 193 return (0); 194 195 if (mii_phy_tick(sc) == EJUSTRETURN) 196 return (0); 197 break; 198 199 case MII_DOWN: 200 mii_phy_down(sc); 201 return (0); 202 } 203 204 /* Update the media status. */ 205 mii_phy_status(sc); 206 207 /* Callback if something changed. */ 208 mii_phy_update(sc, cmd); 209 return (0); 210 } 211 212 void 213 icsphy_status(sc) 214 struct mii_softc *sc; 215 { 216 struct mii_data *mii = sc->mii_pdata; 217 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 218 int bmcr, qpr; 219 220 mii->mii_media_status = IFM_AVALID; 221 mii->mii_media_active = IFM_ETHER; 222 223 /* 224 * Don't get link from the BMSR. It's available in the QPR, 225 * and we have to read it twice to unlatch it anyhow. This 226 * gives us fewer register reads. 227 */ 228 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 229 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 230 231 if (qpr & QPR_LINK) 232 mii->mii_media_status |= IFM_ACTIVE; 233 234 bmcr = PHY_READ(sc, MII_BMCR); 235 if (bmcr & BMCR_ISO) { 236 mii->mii_media_active |= IFM_NONE; 237 mii->mii_media_status = 0; 238 return; 239 } 240 241 if (bmcr & BMCR_LOOP) 242 mii->mii_media_active |= IFM_LOOP; 243 244 if (bmcr & BMCR_AUTOEN) { 245 if ((qpr & QPR_ACOMP) == 0) { 246 /* Erg, still trying, I guess... */ 247 mii->mii_media_active |= IFM_NONE; 248 return; 249 } 250 251 if (qpr & QPR_SPEED) 252 mii->mii_media_active |= IFM_100_TX; 253 else 254 mii->mii_media_active |= IFM_10_T; 255 256 if (qpr & QPR_FDX) 257 mii->mii_media_active |= IFM_FDX; 258 else 259 mii->mii_media_active |= IFM_HDX; 260 } else 261 mii->mii_media_active = ife->ifm_media; 262 } 263 264 void 265 icsphy_reset(sc) 266 struct mii_softc *sc; 267 { 268 269 mii_phy_reset(sc); 270 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_10TPROT|ECR2_Q10T); 271 272 /* 273 * XXX the ICS1892 doesn't set the BMCR properly after 274 * XXX reset, which breaks autonegotiation. 275 */ 276 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 277 278 } 279