icsphy.c revision 1.28
1 /* $NetBSD: icsphy.c,v 1.28 2002/09/27 20:39:21 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 1.28 2002/09/27 20:39:21 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 const struct cfattach icsphy_ca = { 96 sizeof(struct mii_softc), icsphymatch, icsphyattach, mii_phy_detach, 97 mii_phy_activate 98 }; 99 100 int icsphy_service(struct mii_softc *, struct mii_data *, int); 101 void icsphy_status(struct mii_softc *); 102 void icsphy_reset(struct mii_softc *); 103 104 const struct mii_phy_funcs icsphy_funcs = { 105 icsphy_service, icsphy_status, icsphy_reset, 106 }; 107 108 const struct mii_phydesc icsphys[] = { 109 { MII_OUI_ICS, MII_MODEL_ICS_1890, 110 MII_STR_ICS_1890 }, 111 112 { MII_OUI_ICS, MII_MODEL_ICS_1893, 113 MII_STR_ICS_1893 }, 114 115 { 0, 0, 116 NULL }, 117 }; 118 119 int 120 icsphymatch(struct device *parent, struct cfdata *match, void *aux) 121 { 122 struct mii_attach_args *ma = aux; 123 124 if (mii_phy_match(ma, icsphys) != NULL) 125 return (10); 126 127 return (0); 128 } 129 130 void 131 icsphyattach(struct device *parent, struct device *self, void *aux) 132 { 133 struct mii_softc *sc = (struct mii_softc *)self; 134 struct mii_attach_args *ma = aux; 135 struct mii_data *mii = ma->mii_data; 136 const struct mii_phydesc *mpd; 137 138 mpd = mii_phy_match(ma, icsphys); 139 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 140 141 sc->mii_inst = mii->mii_instance; 142 sc->mii_phy = ma->mii_phyno; 143 sc->mii_funcs = &icsphy_funcs; 144 sc->mii_pdata = mii; 145 sc->mii_flags = ma->mii_flags; 146 sc->mii_anegticks = 5; 147 148 PHY_RESET(sc); 149 150 sc->mii_capabilities = 151 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 152 printf("%s: ", sc->mii_dev.dv_xname); 153 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 154 printf("no media present"); 155 else 156 mii_phy_add_media(sc); 157 printf("\n"); 158 } 159 160 int 161 icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 162 { 163 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 164 int reg; 165 166 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 167 return (ENXIO); 168 169 switch (cmd) { 170 case MII_POLLSTAT: 171 /* 172 * If we're not polling our PHY instance, just return. 173 */ 174 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 175 return (0); 176 break; 177 178 case MII_MEDIACHG: 179 /* 180 * If the media indicates a different PHY instance, 181 * isolate ourselves. 182 */ 183 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 184 reg = PHY_READ(sc, MII_BMCR); 185 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 186 return (0); 187 } 188 189 /* 190 * If the interface is not up, don't do anything. 191 */ 192 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 193 break; 194 195 mii_phy_setmedia(sc); 196 break; 197 198 case MII_TICK: 199 /* 200 * If we're not currently selected, just return. 201 */ 202 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 203 return (0); 204 205 if (mii_phy_tick(sc) == EJUSTRETURN) 206 return (0); 207 break; 208 209 case MII_DOWN: 210 mii_phy_down(sc); 211 return (0); 212 } 213 214 /* Update the media status. */ 215 mii_phy_status(sc); 216 217 /* Callback if something changed. */ 218 mii_phy_update(sc, cmd); 219 return (0); 220 } 221 222 void 223 icsphy_status(struct mii_softc *sc) 224 { 225 struct mii_data *mii = sc->mii_pdata; 226 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 227 int bmcr, qpr; 228 229 mii->mii_media_status = IFM_AVALID; 230 mii->mii_media_active = IFM_ETHER; 231 232 /* 233 * Don't get link from the BMSR. It's available in the QPR, 234 * and we have to read it twice to unlatch it anyhow. This 235 * gives us fewer register reads. 236 */ 237 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 238 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 239 240 if (qpr & QPR_LINK) 241 mii->mii_media_status |= IFM_ACTIVE; 242 243 bmcr = PHY_READ(sc, MII_BMCR); 244 if (bmcr & BMCR_ISO) { 245 mii->mii_media_active |= IFM_NONE; 246 mii->mii_media_status = 0; 247 return; 248 } 249 250 if (bmcr & BMCR_LOOP) 251 mii->mii_media_active |= IFM_LOOP; 252 253 if (bmcr & BMCR_AUTOEN) { 254 if ((qpr & QPR_ACOMP) == 0) { 255 /* Erg, still trying, I guess... */ 256 mii->mii_media_active |= IFM_NONE; 257 return; 258 } 259 if (qpr & QPR_SPEED) 260 mii->mii_media_active |= IFM_100_TX; 261 else 262 mii->mii_media_active |= IFM_10_T; 263 if (qpr & QPR_FDX) 264 mii->mii_media_active |= IFM_FDX; 265 } else 266 mii->mii_media_active = ife->ifm_media; 267 } 268 269 void 270 icsphy_reset(sc) 271 struct mii_softc *sc; 272 { 273 274 mii_phy_reset(sc); 275 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_10TPROT|ECR2_Q10T); 276 } 277
Indexes created Mon Oct 13 04:09:54 GMT 2025