1 /* $NetBSD: glxtphy.c,v 1.22 2008/11/17 03:04:27 dyoung 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 1.22 2008/11/17 03:04:27 dyoung 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(device_t, cfdata_t, void *); 86 static void glxtphyattach(device_t, device_t, void *); 87 88 CFATTACH_DECL_NEW(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(device_t parent, cfdata_t 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(device_t parent, device_t 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_dev = self; 134 sc->mii_inst = mii->mii_instance; 135 sc->mii_phy = ma->mii_phyno; 136 sc->mii_funcs = &glxtphy_funcs; 137 sc->mii_pdata = mii; 138 sc->mii_flags = ma->mii_flags; 139 sc->mii_anegticks = MII_ANEGTICKS; 140 141 PHY_RESET(sc); 142 143 sc->mii_capabilities = 144 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 145 if (sc->mii_capabilities & BMSR_EXTSTAT) 146 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 147 148 aprint_normal_dev(self, ""); 149 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 150 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 151 aprint_error("no media present"); 152 else 153 mii_phy_add_media(sc); 154 aprint_normal("\n"); 155 } 156 157 static int 158 glxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 159 { 160 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 161 int reg; 162 163 switch (cmd) { 164 case MII_POLLSTAT: 165 /* 166 * If we're not polling our PHY instance, just return. 167 */ 168 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 169 return (0); 170 break; 171 172 case MII_MEDIACHG: 173 /* 174 * If the media indicates a different PHY instance, 175 * isolate ourselves. 176 */ 177 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 178 reg = PHY_READ(sc, MII_BMCR); 179 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 180 return (0); 181 } 182 183 /* 184 * If the interface is not up, don't do anything. 185 */ 186 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 187 break; 188 189 mii_phy_setmedia(sc); 190 break; 191 192 case MII_TICK: 193 /* 194 * If we're not currently selected, just return. 195 */ 196 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 197 return (0); 198 199 if (mii_phy_tick(sc) == EJUSTRETURN) 200 return (0); 201 break; 202 203 case MII_DOWN: 204 mii_phy_down(sc); 205 return (0); 206 } 207 208 /* Update the media status. */ 209 mii_phy_status(sc); 210 211 /* Callback if something changed. */ 212 mii_phy_update(sc, cmd); 213 return (0); 214 } 215 216 static void 217 glxtphy_status(struct mii_softc *sc) 218 { 219 struct mii_data *mii = sc->mii_pdata; 220 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 221 int bmcr, qsr, gtsr; 222 223 mii->mii_media_status = IFM_AVALID; 224 mii->mii_media_active = IFM_ETHER; 225 226 qsr = PHY_READ(sc, MII_GLXTPHY_QSR); 227 228 if (qsr & QSR_LINK) 229 mii->mii_media_status |= IFM_ACTIVE; 230 231 bmcr = PHY_READ(sc, MII_BMCR); 232 if (bmcr & BMCR_ISO) { 233 mii->mii_media_active |= IFM_NONE; 234 mii->mii_media_status = 0; 235 return; 236 } 237 238 if (bmcr & BMCR_LOOP) 239 mii->mii_media_active |= IFM_LOOP; 240 241 if (bmcr & BMCR_AUTOEN) { 242 /* 243 * The media status bits are only valid of autonegotiation 244 * has completed (or it's disabled). 245 */ 246 if ((qsr & QSR_ACOMP) == 0) { 247 /* Erg, still trying, I guess... */ 248 mii->mii_media_active |= IFM_NONE; 249 return; 250 } 251 252 switch (QSR_SPEED_get(qsr)) { 253 case SPEED_1000: 254 mii->mii_media_active |= IFM_1000_T; 255 gtsr = PHY_READ(sc, MII_100T2SR); 256 if (gtsr & GTSR_MS_RES) 257 mii->mii_media_active |= IFM_ETH_MASTER; 258 break; 259 260 case SPEED_100: 261 mii->mii_media_active |= IFM_100_TX; 262 break; 263 264 case SPEED_10_MII: 265 case SPEED_10_SERIAL: 266 mii->mii_media_active |= IFM_10_T; 267 break; 268 } 269 270 if (qsr & QSR_DUPLEX) 271 mii->mii_media_active |= 272 IFM_FDX | mii_phy_flowstatus(sc); 273 } else 274 mii->mii_media_active = ife->ifm_media; 275 } 276