1 /* $NetBSD: glxtphy.c,v 1.29 2019/03/25 07:34:13 msaitoh 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 * 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 the Level One LXT-1000 10/100/1000 PHY. 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: glxtphy.c,v 1.29 2019/03/25 07:34:13 msaitoh Exp $"); 63 64 #include <sys/param.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/device.h> 68 #include <sys/socket.h> 69 #include <sys/errno.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/glxtphyreg.h> 79 80 static int glxtphymatch(device_t, cfdata_t, void *); 81 static void glxtphyattach(device_t, device_t, void *); 82 83 CFATTACH_DECL_NEW(glxtphy, sizeof(struct mii_softc), 84 glxtphymatch, glxtphyattach, mii_phy_detach, mii_phy_activate); 85 86 static int glxtphy_service(struct mii_softc *, struct mii_data *, int); 87 static void glxtphy_status(struct mii_softc *); 88 89 static const struct mii_phy_funcs glxtphy_funcs = { 90 glxtphy_service, glxtphy_status, mii_phy_reset, 91 }; 92 93 static const struct mii_phydesc glxtphys[] = { 94 MII_PHY_DESC(LEVEL1, LXT1000_OLD), 95 MII_PHY_DESC(LEVEL1, LXT1000), 96 MII_PHY_END, 97 }; 98 99 static int 100 glxtphymatch(device_t parent, cfdata_t match, void *aux) 101 { 102 struct mii_attach_args *ma = aux; 103 104 if (mii_phy_match(ma, glxtphys) != NULL) 105 return 10; 106 107 return 0; 108 } 109 110 static void 111 glxtphyattach(device_t parent, device_t self, void *aux) 112 { 113 struct mii_softc *sc = device_private(self); 114 struct mii_attach_args *ma = aux; 115 struct mii_data *mii = ma->mii_data; 116 const struct mii_phydesc *mpd; 117 118 mpd = mii_phy_match(ma, glxtphys); 119 aprint_naive(": Media interface\n"); 120 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 121 122 sc->mii_dev = self; 123 sc->mii_inst = mii->mii_instance; 124 sc->mii_phy = ma->mii_phyno; 125 sc->mii_funcs = &glxtphy_funcs; 126 sc->mii_pdata = mii; 127 sc->mii_flags = ma->mii_flags; 128 sc->mii_anegticks = MII_ANEGTICKS; 129 130 PHY_RESET(sc); 131 132 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 133 sc->mii_capabilities &= ma->mii_capmask; 134 if (sc->mii_capabilities & BMSR_EXTSTAT) 135 PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities); 136 137 aprint_normal_dev(self, ""); 138 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 139 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 140 aprint_error("no media present"); 141 else 142 mii_phy_add_media(sc); 143 aprint_normal("\n"); 144 } 145 146 static int 147 glxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 148 { 149 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 150 uint16_t reg; 151 152 switch (cmd) { 153 case MII_POLLSTAT: 154 /* If we're not polling our PHY instance, just return. */ 155 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 156 return 0; 157 break; 158 159 case MII_MEDIACHG: 160 /* 161 * If the media indicates a different PHY instance, 162 * isolate ourselves. 163 */ 164 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 165 PHY_READ(sc, MII_BMCR, ®); 166 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 167 return 0; 168 } 169 170 /* If the interface is not up, don't do anything. */ 171 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 172 break; 173 174 mii_phy_setmedia(sc); 175 break; 176 177 case MII_TICK: 178 /* If we're not currently selected, just return. */ 179 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 180 return 0; 181 182 if (mii_phy_tick(sc) == EJUSTRETURN) 183 return 0; 184 break; 185 186 case MII_DOWN: 187 mii_phy_down(sc); 188 return 0; 189 } 190 191 /* Update the media status. */ 192 mii_phy_status(sc); 193 194 /* Callback if something changed. */ 195 mii_phy_update(sc, cmd); 196 return 0; 197 } 198 199 static void 200 glxtphy_status(struct mii_softc *sc) 201 { 202 struct mii_data *mii = sc->mii_pdata; 203 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 204 uint16_t bmcr, qsr, gtsr; 205 206 mii->mii_media_status = IFM_AVALID; 207 mii->mii_media_active = IFM_ETHER; 208 209 PHY_READ(sc, MII_GLXTPHY_QSR, &qsr); 210 211 if (qsr & QSR_LINK) 212 mii->mii_media_status |= IFM_ACTIVE; 213 214 PHY_READ(sc, MII_BMCR, &bmcr); 215 if (bmcr & BMCR_ISO) { 216 mii->mii_media_active |= IFM_NONE; 217 mii->mii_media_status = 0; 218 return; 219 } 220 221 if (bmcr & BMCR_LOOP) 222 mii->mii_media_active |= IFM_LOOP; 223 224 if (bmcr & BMCR_AUTOEN) { 225 /* 226 * The media status bits are only valid of autonegotiation 227 * has completed (or it's disabled). 228 */ 229 if ((qsr & QSR_ACOMP) == 0) { 230 /* Erg, still trying, I guess... */ 231 mii->mii_media_active |= IFM_NONE; 232 return; 233 } 234 235 switch (QSR_SPEED_get(qsr)) { 236 case SPEED_1000: 237 mii->mii_media_active |= IFM_1000_T; 238 PHY_READ(sc, MII_100T2SR, >sr); 239 if (gtsr & GTSR_MS_RES) 240 mii->mii_media_active |= IFM_ETH_MASTER; 241 break; 242 243 case SPEED_100: 244 mii->mii_media_active |= IFM_100_TX; 245 break; 246 247 case SPEED_10_MII: 248 case SPEED_10_SERIAL: 249 mii->mii_media_active |= IFM_10_T; 250 break; 251 } 252 253 if (qsr & QSR_DUPLEX) 254 mii->mii_media_active |= 255 IFM_FDX | mii_phy_flowstatus(sc); 256 else 257 mii->mii_media_active |= IFM_HDX; 258 } else 259 mii->mii_media_active = ife->ifm_media; 260 } 261