1 /* $OpenBSD: icsphy.c,v 1.20 2010/07/23 07:47:13 jsg 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 mii_phy_activate 85 }; 86 87 struct cfdriver icsphy_cd = { 88 NULL, "icsphy", DV_DULL 89 }; 90 91 int icsphy_service(struct mii_softc *, struct mii_data *, int); 92 void icsphy_reset(struct mii_softc *); 93 void icsphy_status(struct mii_softc *); 94 95 const struct mii_phy_funcs icsphy_funcs = { 96 icsphy_service, icsphy_status, icsphy_reset, 97 }; 98 99 static const struct mii_phydesc icsphys[] = { 100 { MII_OUI_xxICS, MII_MODEL_xxICS_1890, 101 MII_STR_xxICS_1890 }, 102 { MII_OUI_xxICS, MII_MODEL_xxICS_1892, 103 MII_STR_xxICS_1892 }, 104 { MII_OUI_xxICS, MII_MODEL_xxICS_1893, 105 MII_STR_xxICS_1893 }, 106 107 { 0, 0, 108 NULL }, 109 110 }; 111 112 int 113 icsphymatch(struct device *parent, void *match, void *aux) 114 { 115 struct mii_attach_args *ma = aux; 116 117 if (mii_phy_match(ma, icsphys) != NULL) 118 return (10); 119 120 return (0); 121 } 122 123 void 124 icsphyattach(struct device *parent, struct device *self, void *aux) 125 { 126 struct mii_softc *sc = (struct mii_softc *)self; 127 struct mii_attach_args *ma = aux; 128 struct mii_data *mii = ma->mii_data; 129 const struct mii_phydesc *mpd; 130 131 mpd = mii_phy_match(ma, icsphys); 132 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 133 134 sc->mii_inst = mii->mii_instance; 135 sc->mii_phy = ma->mii_phyno; 136 sc->mii_funcs = &icsphy_funcs; 137 sc->mii_pdata = mii; 138 sc->mii_flags = ma->mii_flags; 139 140 PHY_RESET(sc); 141 142 sc->mii_capabilities = 143 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 144 if (sc->mii_capabilities & BMSR_MEDIAMASK) 145 mii_phy_add_media(sc); 146 } 147 148 int 149 icsphy_service(sc, mii, cmd) 150 struct mii_softc *sc; 151 struct mii_data *mii; 152 int cmd; 153 { 154 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 155 int reg; 156 157 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 158 return (ENXIO); 159 160 switch (cmd) { 161 case MII_POLLSTAT: 162 /* 163 * If we're not polling our PHY instance, just return. 164 */ 165 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 166 return (0); 167 break; 168 169 case MII_MEDIACHG: 170 /* 171 * If the media indicates a different PHY instance, 172 * isolate ourselves. 173 */ 174 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 175 reg = PHY_READ(sc, MII_BMCR); 176 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 177 return (0); 178 } 179 180 /* 181 * If the interface is not up, don't do anything. 182 */ 183 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 184 break; 185 186 mii_phy_setmedia(sc); 187 break; 188 189 case MII_TICK: 190 /* 191 * If we're not currently selected, just return. 192 */ 193 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 194 return (0); 195 196 if (mii_phy_tick(sc) == EJUSTRETURN) 197 return (0); 198 break; 199 200 case MII_DOWN: 201 mii_phy_down(sc); 202 return (0); 203 } 204 205 /* Update the media status. */ 206 mii_phy_status(sc); 207 208 /* Callback if something changed. */ 209 mii_phy_update(sc, cmd); 210 return (0); 211 } 212 213 void 214 icsphy_status(sc) 215 struct mii_softc *sc; 216 { 217 struct mii_data *mii = sc->mii_pdata; 218 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 219 int bmcr, qpr; 220 221 mii->mii_media_status = IFM_AVALID; 222 mii->mii_media_active = IFM_ETHER; 223 224 /* 225 * Don't get link from the BMSR. It's available in the QPR, 226 * and we have to read it twice to unlatch it anyhow. This 227 * gives us fewer register reads. 228 */ 229 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 230 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 231 232 if (qpr & QPR_LINK) 233 mii->mii_media_status |= IFM_ACTIVE; 234 235 bmcr = PHY_READ(sc, MII_BMCR); 236 if (bmcr & BMCR_ISO) { 237 mii->mii_media_active |= IFM_NONE; 238 mii->mii_media_status = 0; 239 return; 240 } 241 242 if (bmcr & BMCR_LOOP) 243 mii->mii_media_active |= IFM_LOOP; 244 245 if (bmcr & BMCR_AUTOEN) { 246 if ((qpr & QPR_ACOMP) == 0) { 247 /* Erg, still trying, I guess... */ 248 mii->mii_media_active |= IFM_NONE; 249 return; 250 } 251 252 if (qpr & QPR_SPEED) 253 mii->mii_media_active |= IFM_100_TX; 254 else 255 mii->mii_media_active |= IFM_10_T; 256 257 if (qpr & QPR_FDX) 258 mii->mii_media_active |= IFM_FDX; 259 else 260 mii->mii_media_active |= IFM_HDX; 261 } else 262 mii->mii_media_active = ife->ifm_media; 263 } 264 265 void 266 icsphy_reset(sc) 267 struct mii_softc *sc; 268 { 269 270 mii_phy_reset(sc); 271 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_10TPROT|ECR2_Q10T); 272 273 /* 274 * XXX the ICS1892 doesn't set the BMCR properly after 275 * XXX reset, which breaks autonegotiation. 276 */ 277 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 278 279 } 280