1 /* $OpenBSD: icsphy.c,v 1.24 2021/03/05 09:37:20 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/device.h> 67 #include <sys/socket.h> 68 69 #include <net/if.h> 70 #include <net/if_var.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(struct mii_softc *sc, struct mii_data *mii, int cmd) 149 { 150 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 151 int reg; 152 153 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 154 return (ENXIO); 155 156 switch (cmd) { 157 case MII_POLLSTAT: 158 /* 159 * If we're not polling our PHY instance, just return. 160 */ 161 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 162 return (0); 163 break; 164 165 case MII_MEDIACHG: 166 /* 167 * If the media indicates a different PHY instance, 168 * isolate ourselves. 169 */ 170 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 171 reg = PHY_READ(sc, MII_BMCR); 172 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 173 return (0); 174 } 175 176 /* 177 * If the interface is not up, don't do anything. 178 */ 179 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 180 break; 181 182 mii_phy_setmedia(sc); 183 break; 184 185 case MII_TICK: 186 /* 187 * If we're not currently selected, just return. 188 */ 189 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 190 return (0); 191 192 if (mii_phy_tick(sc) == EJUSTRETURN) 193 return (0); 194 break; 195 196 case MII_DOWN: 197 mii_phy_down(sc); 198 return (0); 199 } 200 201 /* Update the media status. */ 202 mii_phy_status(sc); 203 204 /* Callback if something changed. */ 205 mii_phy_update(sc, cmd); 206 return (0); 207 } 208 209 void 210 icsphy_status(struct mii_softc *sc) 211 { 212 struct mii_data *mii = sc->mii_pdata; 213 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 214 int bmcr, qpr; 215 216 mii->mii_media_status = IFM_AVALID; 217 mii->mii_media_active = IFM_ETHER; 218 219 /* 220 * Don't get link from the BMSR. It's available in the QPR, 221 * and we have to read it twice to unlatch it anyhow. This 222 * gives us fewer register reads. 223 */ 224 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 225 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 226 227 if (qpr & QPR_LINK) 228 mii->mii_media_status |= IFM_ACTIVE; 229 230 bmcr = PHY_READ(sc, MII_BMCR); 231 if (bmcr & BMCR_ISO) { 232 mii->mii_media_active |= IFM_NONE; 233 mii->mii_media_status = 0; 234 return; 235 } 236 237 if (bmcr & BMCR_LOOP) 238 mii->mii_media_active |= IFM_LOOP; 239 240 if (bmcr & BMCR_AUTOEN) { 241 if ((qpr & QPR_ACOMP) == 0) { 242 /* Erg, still trying, I guess... */ 243 mii->mii_media_active |= IFM_NONE; 244 return; 245 } 246 247 if (qpr & QPR_SPEED) 248 mii->mii_media_active |= IFM_100_TX; 249 else 250 mii->mii_media_active |= IFM_10_T; 251 252 if (qpr & QPR_FDX) 253 mii->mii_media_active |= IFM_FDX; 254 else 255 mii->mii_media_active |= IFM_HDX; 256 } else 257 mii->mii_media_active = ife->ifm_media; 258 } 259 260 void 261 icsphy_reset(struct mii_softc *sc) 262 { 263 264 mii_phy_reset(sc); 265 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_10TPROT|ECR2_Q10T); 266 267 /* 268 * XXX the ICS1892 doesn't set the BMCR properly after 269 * XXX reset, which breaks autonegotiation. 270 */ 271 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 272 273 } 274