1 /* $OpenBSD: lxtphy.c,v 1.6 2001/04/14 03:22:43 aaron Exp $ */ 2 /* $NetBSD: lxtphy.c,v 1.19 2000/02/02 23:34:57 thorpej Exp $ */ 3 4 /*- 5 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 /* 42 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 3. All advertising materials mentioning features or use of this software 53 * must display the following acknowledgement: 54 * This product includes software developed by Manuel Bouyer. 55 * 4. The name of the author may not be used to endorse or promote products 56 * derived from this software without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 61 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 62 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 63 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 64 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 65 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 66 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 67 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 68 */ 69 70 /* 71 * driver for Level One's LXT-970 ethernet 10/100 PHY 72 * datasheet from www.level1.com 73 */ 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/device.h> 79 #include <sys/malloc.h> 80 #include <sys/socket.h> 81 #include <sys/errno.h> 82 83 #include <net/if.h> 84 #include <net/if_media.h> 85 86 #include <dev/mii/mii.h> 87 #include <dev/mii/miivar.h> 88 #include <dev/mii/miidevs.h> 89 90 #include <dev/mii/lxtphyreg.h> 91 92 int lxtphymatch __P((struct device *, void *, void *)); 93 void lxtphyattach __P((struct device *, struct device *, void *)); 94 95 struct cfattach lxtphy_ca = { 96 sizeof(struct mii_softc), lxtphymatch, lxtphyattach, mii_phy_detach, 97 mii_phy_activate 98 }; 99 100 struct cfdriver lxtphy_cd = { 101 NULL, "lxtphy", DV_DULL 102 }; 103 104 int lxtphy_service __P((struct mii_softc *, struct mii_data *, int)); 105 void lxtphy_status __P((struct mii_softc *)); 106 void lxtphy_reset __P((struct mii_softc *)); 107 108 int 109 lxtphymatch(parent, match, aux) 110 struct device *parent; 111 void *match; 112 void *aux; 113 { 114 struct mii_attach_args *ma = aux; 115 116 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1 && 117 MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1_LXT970) 118 return (10); 119 120 return (0); 121 } 122 123 void 124 lxtphyattach(parent, self, aux) 125 struct device *parent, *self; 126 void *aux; 127 { 128 struct mii_softc *sc = (struct mii_softc *)self; 129 struct mii_attach_args *ma = aux; 130 struct mii_data *mii = ma->mii_data; 131 132 printf(": %s, rev. %d\n", MII_STR_xxLEVEL1_LXT970, 133 MII_REV(ma->mii_id2)); 134 135 sc->mii_inst = mii->mii_instance; 136 sc->mii_phy = ma->mii_phyno; 137 sc->mii_service = lxtphy_service; 138 sc->mii_status = lxtphy_status; 139 sc->mii_pdata = mii; 140 sc->mii_flags = mii->mii_flags; 141 142 lxtphy_reset(sc); 143 144 sc->mii_capabilities = 145 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 146 if (sc->mii_capabilities & BMSR_MEDIAMASK) 147 mii_phy_add_media(sc); 148 } 149 150 int 151 lxtphy_service(sc, mii, cmd) 152 struct mii_softc *sc; 153 struct mii_data *mii; 154 int cmd; 155 { 156 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 157 int reg; 158 159 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 160 return (ENXIO); 161 162 switch (cmd) { 163 case MII_POLLSTAT: 164 /* 165 * If we're not polling our PHY instance, just return. 166 */ 167 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 168 return (0); 169 break; 170 171 case MII_MEDIACHG: 172 /* 173 * If the media indicates a different PHY instance, 174 * isolate ourselves. 175 */ 176 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 177 reg = PHY_READ(sc, MII_BMCR); 178 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 179 return (0); 180 } 181 182 /* 183 * If the interface is not up, don't do anything. 184 */ 185 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 186 break; 187 188 mii_phy_setmedia(sc); 189 break; 190 191 case MII_TICK: 192 /* 193 * If we're not currently selected, just return. 194 */ 195 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 196 return (0); 197 198 if (mii_phy_tick(sc) == EJUSTRETURN) 199 return (0); 200 break; 201 202 case MII_DOWN: 203 mii_phy_down(sc); 204 return (0); 205 } 206 207 /* Update the media status. */ 208 mii_phy_status(sc); 209 210 /* Callback if something changed. */ 211 mii_phy_update(sc, cmd); 212 return (0); 213 } 214 215 void 216 lxtphy_status(sc) 217 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, bmsr, csr; 222 223 mii->mii_media_status = IFM_AVALID; 224 mii->mii_media_active = IFM_ETHER; 225 226 /* 227 * Get link status from the CSR; we need to read the CSR 228 * for media type anyhow, and the link status in the CSR 229 * doens't latch, so fewer register reads are required. 230 */ 231 csr = PHY_READ(sc, MII_LXTPHY_CSR); 232 if (csr & CSR_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 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 247 if ((bmsr & BMSR_ACOMP) == 0) { 248 /* Erg, still trying, I guess... */ 249 mii->mii_media_active |= IFM_NONE; 250 return; 251 } 252 if (csr & CSR_SPEED) 253 mii->mii_media_active |= IFM_100_TX; 254 else 255 mii->mii_media_active |= IFM_10_T; 256 if (csr & CSR_DUPLEX) 257 mii->mii_media_active |= IFM_FDX; 258 } else 259 mii->mii_media_active = ife->ifm_media; 260 } 261 262 void 263 lxtphy_reset(sc) 264 struct mii_softc *sc; 265 { 266 mii_phy_reset(sc); 267 PHY_WRITE(sc, MII_LXTPHY_IER, 268 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); 269 } 270