1 /* $OpenBSD: icsphy.c,v 1.19 2008/06/26 05:42:16 ray 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 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by Manuel Bouyer. 48 * 4. The name of the author may not be used to endorse or promote products 49 * derived from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 54 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 55 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 56 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 60 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 61 */ 62 63 /* 64 * driver for Integrated Circuit Systems' ICS1890 ethernet 10/100 PHY 65 * and its successor ICS1892 66 * datasheet from www.icst.com 67 */ 68 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/kernel.h> 72 #include <sys/device.h> 73 #include <sys/socket.h> 74 75 #include <net/if.h> 76 #include <net/if_media.h> 77 78 #include <dev/mii/mii.h> 79 #include <dev/mii/miivar.h> 80 #include <dev/mii/miidevs.h> 81 82 #include <dev/mii/icsphyreg.h> 83 84 int icsphymatch(struct device *, void *, void *); 85 void icsphyattach(struct device *, struct device *, void *); 86 87 struct cfattach icsphy_ca = { 88 sizeof(struct mii_softc), icsphymatch, icsphyattach, mii_phy_detach, 89 mii_phy_activate 90 }; 91 92 struct cfdriver icsphy_cd = { 93 NULL, "icsphy", DV_DULL 94 }; 95 96 int icsphy_service(struct mii_softc *, struct mii_data *, int); 97 void icsphy_reset(struct mii_softc *); 98 void icsphy_status(struct mii_softc *); 99 100 const struct mii_phy_funcs icsphy_funcs = { 101 icsphy_service, icsphy_status, icsphy_reset, 102 }; 103 104 static const struct mii_phydesc icsphys[] = { 105 { MII_OUI_xxICS, MII_MODEL_xxICS_1890, 106 MII_STR_xxICS_1890 }, 107 { MII_OUI_xxICS, MII_MODEL_xxICS_1892, 108 MII_STR_xxICS_1892 }, 109 { MII_OUI_xxICS, MII_MODEL_xxICS_1893, 110 MII_STR_xxICS_1893 }, 111 112 { 0, 0, 113 NULL }, 114 115 }; 116 117 int 118 icsphymatch(struct device *parent, void *match, void *aux) 119 { 120 struct mii_attach_args *ma = aux; 121 122 if (mii_phy_match(ma, icsphys) != NULL) 123 return (10); 124 125 return (0); 126 } 127 128 void 129 icsphyattach(struct device *parent, struct device *self, void *aux) 130 { 131 struct mii_softc *sc = (struct mii_softc *)self; 132 struct mii_attach_args *ma = aux; 133 struct mii_data *mii = ma->mii_data; 134 const struct mii_phydesc *mpd; 135 136 mpd = mii_phy_match(ma, icsphys); 137 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 138 139 sc->mii_inst = mii->mii_instance; 140 sc->mii_phy = ma->mii_phyno; 141 sc->mii_funcs = &icsphy_funcs; 142 sc->mii_pdata = mii; 143 sc->mii_flags = ma->mii_flags; 144 145 PHY_RESET(sc); 146 147 sc->mii_capabilities = 148 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 149 if (sc->mii_capabilities & BMSR_MEDIAMASK) 150 mii_phy_add_media(sc); 151 } 152 153 int 154 icsphy_service(sc, mii, cmd) 155 struct mii_softc *sc; 156 struct mii_data *mii; 157 int cmd; 158 { 159 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 160 int reg; 161 162 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 163 return (ENXIO); 164 165 switch (cmd) { 166 case MII_POLLSTAT: 167 /* 168 * If we're not polling our PHY instance, just return. 169 */ 170 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 171 return (0); 172 break; 173 174 case MII_MEDIACHG: 175 /* 176 * If the media indicates a different PHY instance, 177 * isolate ourselves. 178 */ 179 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 180 reg = PHY_READ(sc, MII_BMCR); 181 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 182 return (0); 183 } 184 185 /* 186 * If the interface is not up, don't do anything. 187 */ 188 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 189 break; 190 191 mii_phy_setmedia(sc); 192 break; 193 194 case MII_TICK: 195 /* 196 * If we're not currently selected, just return. 197 */ 198 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 199 return (0); 200 201 if (mii_phy_tick(sc) == EJUSTRETURN) 202 return (0); 203 break; 204 205 case MII_DOWN: 206 mii_phy_down(sc); 207 return (0); 208 } 209 210 /* Update the media status. */ 211 mii_phy_status(sc); 212 213 /* Callback if something changed. */ 214 mii_phy_update(sc, cmd); 215 return (0); 216 } 217 218 void 219 icsphy_status(sc) 220 struct mii_softc *sc; 221 { 222 struct mii_data *mii = sc->mii_pdata; 223 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 224 int bmcr, qpr; 225 226 mii->mii_media_status = IFM_AVALID; 227 mii->mii_media_active = IFM_ETHER; 228 229 /* 230 * Don't get link from the BMSR. It's available in the QPR, 231 * and we have to read it twice to unlatch it anyhow. This 232 * gives us fewer register reads. 233 */ 234 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 235 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 236 237 if (qpr & QPR_LINK) 238 mii->mii_media_status |= IFM_ACTIVE; 239 240 bmcr = PHY_READ(sc, MII_BMCR); 241 if (bmcr & BMCR_ISO) { 242 mii->mii_media_active |= IFM_NONE; 243 mii->mii_media_status = 0; 244 return; 245 } 246 247 if (bmcr & BMCR_LOOP) 248 mii->mii_media_active |= IFM_LOOP; 249 250 if (bmcr & BMCR_AUTOEN) { 251 if ((qpr & QPR_ACOMP) == 0) { 252 /* Erg, still trying, I guess... */ 253 mii->mii_media_active |= IFM_NONE; 254 return; 255 } 256 257 if (qpr & QPR_SPEED) 258 mii->mii_media_active |= IFM_100_TX; 259 else 260 mii->mii_media_active |= IFM_10_T; 261 262 if (qpr & QPR_FDX) 263 mii->mii_media_active |= IFM_FDX; 264 else 265 mii->mii_media_active |= IFM_HDX; 266 } else 267 mii->mii_media_active = ife->ifm_media; 268 } 269 270 void 271 icsphy_reset(sc) 272 struct mii_softc *sc; 273 { 274 275 mii_phy_reset(sc); 276 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_10TPROT|ECR2_Q10T); 277 278 /* 279 * XXX the ICS1892 doesn't set the BMCR properly after 280 * XXX reset, which breaks autonegotiation. 281 */ 282 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 283 284 } 285