icsphy.c revision 1.48.18.1
1 /* $NetBSD: icsphy.c,v 1.48.18.1 2014/11/09 12:13:15 martin 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 /* 58 * driver for Integrated Circuit Systems' ICS1889-1893 ethernet 10/100 PHY 59 * datasheet from www.icst.com 60 */ 61 62 #include <sys/cdefs.h> 63 __KERNEL_RCSID(0, "$NetBSD: icsphy.c,v 1.48.18.1 2014/11/09 12:13:15 martin Exp $"); 64 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/kernel.h> 68 #include <sys/device.h> 69 #include <sys/socket.h> 70 71 #include <net/if.h> 72 #include <net/if_media.h> 73 74 #include <dev/mii/mii.h> 75 #include <dev/mii/miivar.h> 76 #include <dev/mii/miidevs.h> 77 78 #include <dev/mii/icsphyreg.h> 79 80 static int icsphymatch(device_t, cfdata_t, void *); 81 static void icsphyattach(device_t, device_t, void *); 82 83 CFATTACH_DECL_NEW(icsphy, sizeof(struct mii_softc), 84 icsphymatch, icsphyattach, mii_phy_detach, mii_phy_activate); 85 86 static int icsphy_service(struct mii_softc *, struct mii_data *, int); 87 static void icsphy_status(struct mii_softc *); 88 static void icsphy_reset(struct mii_softc *); 89 90 static const struct mii_phy_funcs icsphy_funcs = { 91 icsphy_service, icsphy_status, icsphy_reset, 92 }; 93 94 static const struct mii_phydesc icsphys[] = { 95 { MII_OUI_ICS, MII_MODEL_ICS_1889, 96 MII_STR_ICS_1889 }, 97 98 { MII_OUI_ICS, MII_MODEL_ICS_1890, 99 MII_STR_ICS_1890 }, 100 101 { MII_OUI_ICS, MII_MODEL_ICS_1892, 102 MII_STR_ICS_1892 }, 103 104 { MII_OUI_ICS, MII_MODEL_ICS_1893, 105 MII_STR_ICS_1893 }, 106 107 { 0, 0, 108 NULL }, 109 }; 110 111 static int 112 icsphymatch(device_t parent, cfdata_t 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 static void 123 icsphyattach(device_t parent, device_t self, void *aux) 124 { 125 struct mii_softc *sc = device_private(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 aprint_naive(": Media interface\n"); 132 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 133 134 sc->mii_dev = self; 135 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 136 sc->mii_inst = mii->mii_instance; 137 sc->mii_phy = ma->mii_phyno; 138 sc->mii_funcs = &icsphy_funcs; 139 sc->mii_pdata = mii; 140 sc->mii_flags = ma->mii_flags; 141 sc->mii_anegticks = MII_ANEGTICKS; 142 143 PHY_RESET(sc); 144 145 sc->mii_capabilities = 146 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 147 aprint_normal_dev(self, ""); 148 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 149 aprint_error("no media present"); 150 else 151 mii_phy_add_media(sc); 152 aprint_normal("\n"); 153 } 154 155 static int 156 icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 157 { 158 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 159 int reg; 160 161 switch (cmd) { 162 case MII_POLLSTAT: 163 /* 164 * If we're not polling our PHY instance, just return. 165 */ 166 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 167 return (0); 168 break; 169 170 case MII_MEDIACHG: 171 /* 172 * If the media indicates a different PHY instance, 173 * isolate ourselves. 174 */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 176 reg = PHY_READ(sc, MII_BMCR); 177 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 178 return (0); 179 } 180 181 /* 182 * If the interface is not up, don't do anything. 183 */ 184 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 185 break; 186 187 mii_phy_setmedia(sc); 188 break; 189 190 case MII_TICK: 191 /* 192 * If we're not currently selected, just return. 193 */ 194 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 195 return (0); 196 197 if (mii_phy_tick(sc) == EJUSTRETURN) 198 return (0); 199 break; 200 201 case MII_DOWN: 202 mii_phy_down(sc); 203 return (0); 204 } 205 206 /* Update the media status. */ 207 mii_phy_status(sc); 208 209 /* Callback if something changed. */ 210 mii_phy_update(sc, cmd); 211 return (0); 212 } 213 214 static void 215 icsphy_status(struct mii_softc *sc) 216 { 217 struct mii_data *mii = sc->mii_pdata; 218 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 219 int bmcr, qpr; 220 221 mii->mii_media_status = IFM_AVALID; 222 mii->mii_media_active = IFM_ETHER; 223 224 /* 225 * Don't get link from the BMSR. It's available in the QPR, 226 * and we have to read it twice to unlatch it anyhow. This 227 * gives us fewer register reads. 228 */ 229 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 230 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 231 232 if (qpr & QPR_LINK) 233 mii->mii_media_status |= IFM_ACTIVE; 234 235 bmcr = PHY_READ(sc, MII_BMCR); 236 if (bmcr & BMCR_ISO) { 237 mii->mii_media_active |= IFM_NONE; 238 mii->mii_media_status = 0; 239 return; 240 } 241 242 if (bmcr & BMCR_LOOP) 243 mii->mii_media_active |= IFM_LOOP; 244 245 if (bmcr & BMCR_AUTOEN) { 246 if ((qpr & QPR_ACOMP) == 0) { 247 /* Erg, still trying, I guess... */ 248 mii->mii_media_active |= IFM_NONE; 249 return; 250 } 251 if (qpr & QPR_SPEED) 252 mii->mii_media_active |= IFM_100_TX; 253 else 254 mii->mii_media_active |= IFM_10_T; 255 256 if (qpr & QPR_FDX) 257 mii->mii_media_active |= IFM_FDX; 258 else 259 mii->mii_media_active |= IFM_HDX; 260 } else 261 mii->mii_media_active = ife->ifm_media; 262 } 263 264 static void 265 icsphy_reset(struct mii_softc *sc) 266 { 267 268 mii_phy_reset(sc); 269 /* set powerdown feature */ 270 switch (sc->mii_mpd_model) { 271 case MII_MODEL_ICS_1890: 272 case MII_MODEL_ICS_1893: 273 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_100AUTOPWRDN); 274 break; 275 case MII_MODEL_ICS_1892: 276 PHY_WRITE(sc, MII_ICSPHY_ECR2, 277 ECR2_10AUTOPWRDN|ECR2_100AUTOPWRDN); 278 break; 279 default: 280 /* 1889 have no ECR2 */ 281 break; 282 } 283 /* 284 * There is no description that the reset do auto-negotiation in the 285 * data sheet. 286 */ 287 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX); 288 } 289
Indexes created Mon Oct 13 04:09:54 GMT 2025