1 /* $NetBSD: icsphy.c,v 1.31 2003/04/29 01:49:33 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by Manuel Bouyer. 54 * 4. The name of the author may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 /* 70 * driver for Integrated Circuit Systems' ICS1890 ethernet 10/100 PHY 71 * datasheet from www.icst.com 72 */ 73 74 #include <sys/cdefs.h> 75 __KERNEL_RCSID(0, "$NetBSD: icsphy.c,v 1.31 2003/04/29 01:49:33 thorpej Exp $"); 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/device.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(struct device *, struct cfdata *, void *); 93 void icsphyattach(struct device *, struct device *, void *); 94 95 CFATTACH_DECL(icsphy, sizeof(struct mii_softc), 96 icsphymatch, icsphyattach, mii_phy_detach, mii_phy_activate); 97 98 int icsphy_service(struct mii_softc *, struct mii_data *, int); 99 void icsphy_status(struct mii_softc *); 100 void icsphy_reset(struct mii_softc *); 101 102 const struct mii_phy_funcs icsphy_funcs = { 103 icsphy_service, icsphy_status, icsphy_reset, 104 }; 105 106 const struct mii_phydesc icsphys[] = { 107 { MII_OUI_ICS, MII_MODEL_ICS_1890, 108 MII_STR_ICS_1890 }, 109 110 { MII_OUI_ICS, MII_MODEL_ICS_1893, 111 MII_STR_ICS_1893 }, 112 113 { 0, 0, 114 NULL }, 115 }; 116 117 int 118 icsphymatch(struct device *parent, struct cfdata *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 aprint_naive(": Media interface\n"); 138 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 139 140 sc->mii_inst = mii->mii_instance; 141 sc->mii_phy = ma->mii_phyno; 142 sc->mii_funcs = &icsphy_funcs; 143 sc->mii_pdata = mii; 144 sc->mii_flags = ma->mii_flags; 145 sc->mii_anegticks = 5; 146 147 PHY_RESET(sc); 148 149 sc->mii_capabilities = 150 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 151 aprint_normal("%s: ", sc->mii_dev.dv_xname); 152 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 153 aprint_error("no media present"); 154 else 155 mii_phy_add_media(sc); 156 aprint_normal("\n"); 157 } 158 159 int 160 icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 161 { 162 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 163 int reg; 164 165 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 166 return (ENXIO); 167 168 switch (cmd) { 169 case MII_POLLSTAT: 170 /* 171 * If we're not polling our PHY instance, just return. 172 */ 173 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 174 return (0); 175 break; 176 177 case MII_MEDIACHG: 178 /* 179 * If the media indicates a different PHY instance, 180 * isolate ourselves. 181 */ 182 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 183 reg = PHY_READ(sc, MII_BMCR); 184 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 185 return (0); 186 } 187 188 /* 189 * If the interface is not up, don't do anything. 190 */ 191 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 192 break; 193 194 mii_phy_setmedia(sc); 195 break; 196 197 case MII_TICK: 198 /* 199 * If we're not currently selected, just return. 200 */ 201 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 202 return (0); 203 204 if (mii_phy_tick(sc) == EJUSTRETURN) 205 return (0); 206 break; 207 208 case MII_DOWN: 209 mii_phy_down(sc); 210 return (0); 211 } 212 213 /* Update the media status. */ 214 mii_phy_status(sc); 215 216 /* Callback if something changed. */ 217 mii_phy_update(sc, cmd); 218 return (0); 219 } 220 221 void 222 icsphy_status(struct mii_softc *sc) 223 { 224 struct mii_data *mii = sc->mii_pdata; 225 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 226 int bmcr, qpr; 227 228 mii->mii_media_status = IFM_AVALID; 229 mii->mii_media_active = IFM_ETHER; 230 231 /* 232 * Don't get link from the BMSR. It's available in the QPR, 233 * and we have to read it twice to unlatch it anyhow. This 234 * gives us fewer register reads. 235 */ 236 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 237 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 238 239 if (qpr & QPR_LINK) 240 mii->mii_media_status |= IFM_ACTIVE; 241 242 bmcr = PHY_READ(sc, MII_BMCR); 243 if (bmcr & BMCR_ISO) { 244 mii->mii_media_active |= IFM_NONE; 245 mii->mii_media_status = 0; 246 return; 247 } 248 249 if (bmcr & BMCR_LOOP) 250 mii->mii_media_active |= IFM_LOOP; 251 252 if (bmcr & BMCR_AUTOEN) { 253 if ((qpr & QPR_ACOMP) == 0) { 254 /* Erg, still trying, I guess... */ 255 mii->mii_media_active |= IFM_NONE; 256 return; 257 } 258 if (qpr & QPR_SPEED) 259 mii->mii_media_active |= IFM_100_TX; 260 else 261 mii->mii_media_active |= IFM_10_T; 262 if (qpr & QPR_FDX) 263 mii->mii_media_active |= IFM_FDX; 264 } else 265 mii->mii_media_active = ife->ifm_media; 266 } 267 268 void 269 icsphy_reset(sc) 270 struct mii_softc *sc; 271 { 272 273 mii_phy_reset(sc); 274 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_10TPROT|ECR2_Q10T); 275 } 276