icsphy.c revision 1.26
1 /* $NetBSD: icsphy.c,v 1.26 2002/03/25 20:51:24 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 1.26 2002/03/25 20:51:24 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/malloc.h> 82 #include <sys/socket.h> 83 84 #include <net/if.h> 85 #include <net/if_media.h> 86 87 #include <dev/mii/mii.h> 88 #include <dev/mii/miivar.h> 89 #include <dev/mii/miidevs.h> 90 91 #include <dev/mii/icsphyreg.h> 92 93 int icsphymatch(struct device *, struct cfdata *, void *); 94 void icsphyattach(struct device *, struct device *, void *); 95 96 struct cfattach icsphy_ca = { 97 sizeof(struct mii_softc), icsphymatch, icsphyattach, mii_phy_detach, 98 mii_phy_activate 99 }; 100 101 int icsphy_service(struct mii_softc *, struct mii_data *, int); 102 void icsphy_status(struct mii_softc *); 103 void icsphy_reset(struct mii_softc *); 104 105 const struct mii_phy_funcs icsphy_funcs = { 106 icsphy_service, icsphy_status, icsphy_reset, 107 }; 108 109 const struct mii_phydesc icsphys[] = { 110 { MII_OUI_ICS, MII_MODEL_ICS_1890, 111 MII_STR_ICS_1890 }, 112 113 { MII_OUI_ICS, MII_MODEL_ICS_1893, 114 MII_STR_ICS_1893 }, 115 116 { 0, 0, 117 NULL }, 118 }; 119 120 int 121 icsphymatch(struct device *parent, struct cfdata *match, void *aux) 122 { 123 struct mii_attach_args *ma = aux; 124 125 if (mii_phy_match(ma, icsphys) != NULL) 126 return (10); 127 128 return (0); 129 } 130 131 void 132 icsphyattach(struct device *parent, struct device *self, void *aux) 133 { 134 struct mii_softc *sc = (struct mii_softc *)self; 135 struct mii_attach_args *ma = aux; 136 struct mii_data *mii = ma->mii_data; 137 const struct mii_phydesc *mpd; 138 139 mpd = mii_phy_match(ma, icsphys); 140 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 141 142 sc->mii_inst = mii->mii_instance; 143 sc->mii_phy = ma->mii_phyno; 144 sc->mii_funcs = &icsphy_funcs; 145 sc->mii_pdata = mii; 146 sc->mii_flags = ma->mii_flags; 147 sc->mii_anegticks = 5; 148 149 PHY_RESET(sc); 150 151 sc->mii_capabilities = 152 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 153 printf("%s: ", sc->mii_dev.dv_xname); 154 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 155 printf("no media present"); 156 else 157 mii_phy_add_media(sc); 158 printf("\n"); 159 } 160 161 int 162 icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 163 { 164 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 165 int reg; 166 167 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 168 return (ENXIO); 169 170 switch (cmd) { 171 case MII_POLLSTAT: 172 /* 173 * If we're not polling our PHY instance, just return. 174 */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 176 return (0); 177 break; 178 179 case MII_MEDIACHG: 180 /* 181 * If the media indicates a different PHY instance, 182 * isolate ourselves. 183 */ 184 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 185 reg = PHY_READ(sc, MII_BMCR); 186 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 187 return (0); 188 } 189 190 /* 191 * If the interface is not up, don't do anything. 192 */ 193 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 194 break; 195 196 mii_phy_setmedia(sc); 197 break; 198 199 case MII_TICK: 200 /* 201 * If we're not currently selected, just return. 202 */ 203 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 204 return (0); 205 206 if (mii_phy_tick(sc) == EJUSTRETURN) 207 return (0); 208 break; 209 210 case MII_DOWN: 211 mii_phy_down(sc); 212 return (0); 213 } 214 215 /* Update the media status. */ 216 mii_phy_status(sc); 217 218 /* Callback if something changed. */ 219 mii_phy_update(sc, cmd); 220 return (0); 221 } 222 223 void 224 icsphy_status(struct mii_softc *sc) 225 { 226 struct mii_data *mii = sc->mii_pdata; 227 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 228 int bmcr, qpr; 229 230 mii->mii_media_status = IFM_AVALID; 231 mii->mii_media_active = IFM_ETHER; 232 233 /* 234 * Don't get link from the BMSR. It's available in the QPR, 235 * and we have to read it twice to unlatch it anyhow. This 236 * gives us fewer register reads. 237 */ 238 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 239 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 240 241 if (qpr & QPR_LINK) 242 mii->mii_media_status |= IFM_ACTIVE; 243 244 bmcr = PHY_READ(sc, MII_BMCR); 245 if (bmcr & BMCR_ISO) { 246 mii->mii_media_active |= IFM_NONE; 247 mii->mii_media_status = 0; 248 return; 249 } 250 251 if (bmcr & BMCR_LOOP) 252 mii->mii_media_active |= IFM_LOOP; 253 254 if (bmcr & BMCR_AUTOEN) { 255 if ((qpr & QPR_ACOMP) == 0) { 256 /* Erg, still trying, I guess... */ 257 mii->mii_media_active |= IFM_NONE; 258 return; 259 } 260 if (qpr & QPR_SPEED) 261 mii->mii_media_active |= IFM_100_TX; 262 else 263 mii->mii_media_active |= IFM_10_T; 264 if (qpr & QPR_FDX) 265 mii->mii_media_active |= IFM_FDX; 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
Indexes created Mon Oct 13 16:09:52 GMT 2025