icsphy.c revision 1.37
1 /* $NetBSD: icsphy.c,v 1.37 2006/02/20 16:50:37 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' ICS1889-1893 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 1.37 2006/02/20 16:50:37 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 static int icsphymatch(struct device *, struct cfdata *, void *); 93 static 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 static int icsphy_service(struct mii_softc *, struct mii_data *, int); 99 static void icsphy_status(struct mii_softc *); 100 static void icsphy_reset(struct mii_softc *); 101 102 static const struct mii_phy_funcs icsphy_funcs = { 103 icsphy_service, icsphy_status, icsphy_reset, 104 }; 105 106 static const struct mii_phydesc icsphys[] = { 107 { MII_OUI_ICS, MII_MODEL_ICS_1889, 108 MII_STR_ICS_1889 }, 109 110 { MII_OUI_ICS, MII_MODEL_ICS_1890, 111 MII_STR_ICS_1890 }, 112 113 { MII_OUI_ICS, MII_MODEL_ICS_1892, 114 MII_STR_ICS_1892 }, 115 116 { MII_OUI_ICS, MII_MODEL_ICS_1893, 117 MII_STR_ICS_1893 }, 118 119 { 0, 0, 120 NULL }, 121 }; 122 123 static int 124 icsphymatch(struct device *parent, struct cfdata *match, void *aux) 125 { 126 struct mii_attach_args *ma = aux; 127 128 if (mii_phy_match(ma, icsphys) != NULL) 129 return (10); 130 131 return (0); 132 } 133 134 static void 135 icsphyattach(struct device *parent, struct device *self, void *aux) 136 { 137 struct mii_softc *sc = (struct mii_softc *)self; 138 struct mii_attach_args *ma = aux; 139 struct mii_data *mii = ma->mii_data; 140 const struct mii_phydesc *mpd; 141 142 mpd = mii_phy_match(ma, icsphys); 143 aprint_naive(": Media interface\n"); 144 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 145 146 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 147 sc->mii_inst = mii->mii_instance; 148 sc->mii_phy = ma->mii_phyno; 149 sc->mii_funcs = &icsphy_funcs; 150 sc->mii_pdata = mii; 151 sc->mii_flags = ma->mii_flags; 152 sc->mii_anegticks = 5; 153 154 PHY_RESET(sc); 155 156 sc->mii_capabilities = 157 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 158 aprint_normal("%s: ", sc->mii_dev.dv_xname); 159 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 160 aprint_error("no media present"); 161 else 162 mii_phy_add_media(sc); 163 aprint_normal("\n"); 164 } 165 166 static int 167 icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 168 { 169 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 170 int reg; 171 172 if (!device_is_active(&sc->mii_dev)) 173 return (ENXIO); 174 175 switch (cmd) { 176 case MII_POLLSTAT: 177 /* 178 * If we're not polling our PHY instance, just return. 179 */ 180 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 181 return (0); 182 break; 183 184 case MII_MEDIACHG: 185 /* 186 * If the media indicates a different PHY instance, 187 * isolate ourselves. 188 */ 189 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 190 reg = PHY_READ(sc, MII_BMCR); 191 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 192 return (0); 193 } 194 195 /* 196 * If the interface is not up, don't do anything. 197 */ 198 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 199 break; 200 201 mii_phy_setmedia(sc); 202 break; 203 204 case MII_TICK: 205 /* 206 * If we're not currently selected, just return. 207 */ 208 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 209 return (0); 210 211 if (mii_phy_tick(sc) == EJUSTRETURN) 212 return (0); 213 break; 214 215 case MII_DOWN: 216 mii_phy_down(sc); 217 return (0); 218 } 219 220 /* Update the media status. */ 221 mii_phy_status(sc); 222 223 /* Callback if something changed. */ 224 mii_phy_update(sc, cmd); 225 return (0); 226 } 227 228 static void 229 icsphy_status(struct mii_softc *sc) 230 { 231 struct mii_data *mii = sc->mii_pdata; 232 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 233 int bmcr, qpr; 234 235 mii->mii_media_status = IFM_AVALID; 236 mii->mii_media_active = IFM_ETHER; 237 238 /* 239 * Don't get link from the BMSR. It's available in the QPR, 240 * and we have to read it twice to unlatch it anyhow. This 241 * gives us fewer register reads. 242 */ 243 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 244 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 245 246 if (qpr & QPR_LINK) 247 mii->mii_media_status |= IFM_ACTIVE; 248 249 bmcr = PHY_READ(sc, MII_BMCR); 250 if (bmcr & BMCR_ISO) { 251 mii->mii_media_active |= IFM_NONE; 252 mii->mii_media_status = 0; 253 return; 254 } 255 256 if (bmcr & BMCR_LOOP) 257 mii->mii_media_active |= IFM_LOOP; 258 259 if (bmcr & BMCR_AUTOEN) { 260 if ((qpr & QPR_ACOMP) == 0) { 261 /* Erg, still trying, I guess... */ 262 mii->mii_media_active |= IFM_NONE; 263 return; 264 } 265 if (qpr & QPR_SPEED) 266 mii->mii_media_active |= IFM_100_TX; 267 else 268 mii->mii_media_active |= IFM_10_T; 269 if (qpr & QPR_FDX) 270 mii->mii_media_active |= IFM_FDX; 271 } else 272 mii->mii_media_active = ife->ifm_media; 273 } 274 275 static void 276 icsphy_reset(struct mii_softc *sc) 277 { 278 279 mii_phy_reset(sc); 280 /* set powerdown feature */ 281 switch (sc->mii_mpd_model) { 282 case MII_MODEL_ICS_1890: 283 case MII_MODEL_ICS_1893: 284 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_100AUTOPWRDN); 285 break; 286 case MII_MODEL_ICS_1892: 287 PHY_WRITE(sc, MII_ICSPHY_ECR2, 288 ECR2_10AUTOPWRDN|ECR2_100AUTOPWRDN); 289 break; 290 default: 291 /* 1889 have no ECR2 */ 292 break; 293 } 294 /* 295 * There is no description that the reset do auto-negotiation in the 296 * data sheet. 297 */ 298 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX); 299 } 300
Indexes created Mon Oct 13 16:09:52 GMT 2025