1 /* $NetBSD: glxtphy.c,v 1.20 2008/04/28 20:23:53 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000, 2001 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 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by Manuel Bouyer. 47 * 4. The name of the author may not be used to endorse or promote products 48 * derived from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 53 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 54 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 55 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 59 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 */ 61 62 /* 63 * Driver for the Level One LXT-1000 10/100/1000 PHY. 64 */ 65 66 #include <sys/cdefs.h> 67 __KERNEL_RCSID(0, "$NetBSD: glxtphy.c,v 1.20 2008/04/28 20:23:53 martin Exp $"); 68 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/kernel.h> 72 #include <sys/device.h> 73 #include <sys/socket.h> 74 #include <sys/errno.h> 75 76 #include <net/if.h> 77 #include <net/if_media.h> 78 79 #include <dev/mii/mii.h> 80 #include <dev/mii/miivar.h> 81 #include <dev/mii/miidevs.h> 82 83 #include <dev/mii/glxtphyreg.h> 84 85 static int glxtphymatch(struct device *, struct cfdata *, void *); 86 static void glxtphyattach(struct device *, struct device *, void *); 87 88 CFATTACH_DECL(glxtphy, sizeof(struct mii_softc), 89 glxtphymatch, glxtphyattach, mii_phy_detach, mii_phy_activate); 90 91 static int glxtphy_service(struct mii_softc *, struct mii_data *, int); 92 static void glxtphy_status(struct mii_softc *); 93 94 static const struct mii_phy_funcs glxtphy_funcs = { 95 glxtphy_service, glxtphy_status, mii_phy_reset, 96 }; 97 98 static const struct mii_phydesc glxtphys[] = { 99 { MII_OUI_LEVEL1, MII_MODEL_LEVEL1_LXT1000_OLD, 100 MII_STR_LEVEL1_LXT1000_OLD }, 101 102 { MII_OUI_LEVEL1, MII_MODEL_LEVEL1_LXT1000_OLD, 103 MII_STR_LEVEL1_LXT1000_OLD }, 104 105 { 0, 0, 106 NULL }, 107 }; 108 109 static int 110 glxtphymatch(struct device *parent, struct cfdata *match, 111 void *aux) 112 { 113 struct mii_attach_args *ma = aux; 114 115 if (mii_phy_match(ma, glxtphys) != NULL) 116 return (10); 117 118 return (0); 119 } 120 121 static void 122 glxtphyattach(struct device *parent, struct device *self, void *aux) 123 { 124 struct mii_softc *sc = device_private(self); 125 struct mii_attach_args *ma = aux; 126 struct mii_data *mii = ma->mii_data; 127 const struct mii_phydesc *mpd; 128 129 mpd = mii_phy_match(ma, glxtphys); 130 aprint_naive(": Media interface\n"); 131 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 132 133 sc->mii_inst = mii->mii_instance; 134 sc->mii_phy = ma->mii_phyno; 135 sc->mii_funcs = &glxtphy_funcs; 136 sc->mii_pdata = mii; 137 sc->mii_flags = ma->mii_flags; 138 sc->mii_anegticks = MII_ANEGTICKS; 139 140 PHY_RESET(sc); 141 142 sc->mii_capabilities = 143 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 144 if (sc->mii_capabilities & BMSR_EXTSTAT) 145 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 146 147 aprint_normal_dev(&sc->mii_dev, ""); 148 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 149 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 150 aprint_error("no media present"); 151 else 152 mii_phy_add_media(sc); 153 aprint_normal("\n"); 154 155 if (!pmf_device_register(self, NULL, mii_phy_resume)) 156 aprint_error_dev(self, "couldn't establish power handler\n"); 157 } 158 159 static int 160 glxtphy_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 switch (cmd) { 166 case MII_POLLSTAT: 167 /* 168 * If we're not polling our PHY instance, just return. 169 */ 170 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 171 return (0); 172 break; 173 174 case MII_MEDIACHG: 175 /* 176 * If the media indicates a different PHY instance, 177 * isolate ourselves. 178 */ 179 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 180 reg = PHY_READ(sc, MII_BMCR); 181 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 182 return (0); 183 } 184 185 /* 186 * If the interface is not up, don't do anything. 187 */ 188 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 189 break; 190 191 mii_phy_setmedia(sc); 192 break; 193 194 case MII_TICK: 195 /* 196 * If we're not currently selected, just return. 197 */ 198 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 199 return (0); 200 201 if (mii_phy_tick(sc) == EJUSTRETURN) 202 return (0); 203 break; 204 205 case MII_DOWN: 206 mii_phy_down(sc); 207 return (0); 208 } 209 210 /* Update the media status. */ 211 mii_phy_status(sc); 212 213 /* Callback if something changed. */ 214 mii_phy_update(sc, cmd); 215 return (0); 216 } 217 218 static void 219 glxtphy_status(struct mii_softc *sc) 220 { 221 struct mii_data *mii = sc->mii_pdata; 222 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 223 int bmcr, qsr, gtsr; 224 225 mii->mii_media_status = IFM_AVALID; 226 mii->mii_media_active = IFM_ETHER; 227 228 qsr = PHY_READ(sc, MII_GLXTPHY_QSR); 229 230 if (qsr & QSR_LINK) 231 mii->mii_media_status |= IFM_ACTIVE; 232 233 bmcr = PHY_READ(sc, MII_BMCR); 234 if (bmcr & BMCR_ISO) { 235 mii->mii_media_active |= IFM_NONE; 236 mii->mii_media_status = 0; 237 return; 238 } 239 240 if (bmcr & BMCR_LOOP) 241 mii->mii_media_active |= IFM_LOOP; 242 243 if (bmcr & BMCR_AUTOEN) { 244 /* 245 * The media status bits are only valid of autonegotiation 246 * has completed (or it's disabled). 247 */ 248 if ((qsr & QSR_ACOMP) == 0) { 249 /* Erg, still trying, I guess... */ 250 mii->mii_media_active |= IFM_NONE; 251 return; 252 } 253 254 switch (QSR_SPEED_get(qsr)) { 255 case SPEED_1000: 256 mii->mii_media_active |= IFM_1000_T; 257 gtsr = PHY_READ(sc, MII_100T2SR); 258 if (gtsr & GTSR_MS_RES) 259 mii->mii_media_active |= IFM_ETH_MASTER; 260 break; 261 262 case SPEED_100: 263 mii->mii_media_active |= IFM_100_TX; 264 break; 265 266 case SPEED_10_MII: 267 case SPEED_10_SERIAL: 268 mii->mii_media_active |= IFM_10_T; 269 break; 270 } 271 272 if (qsr & QSR_DUPLEX) 273 mii->mii_media_active |= 274 IFM_FDX | mii_phy_flowstatus(sc); 275 } else 276 mii->mii_media_active = ife->ifm_media; 277 } 278