1 /* $OpenBSD: sqphy.c,v 1.18 2010/07/23 07:47:13 jsg Exp $ */ 2 /* $NetBSD: sqphy.c,v 1.17 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 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58 /* 59 * driver for Seeq 80220/80221 and 80223 10/100 ethernet PHYs 60 */ 61 62 #include <sys/param.h> 63 #include <sys/systm.h> 64 #include <sys/kernel.h> 65 #include <sys/device.h> 66 #include <sys/socket.h> 67 #include <sys/errno.h> 68 69 #include <net/if.h> 70 #include <net/if_media.h> 71 72 #include <dev/mii/mii.h> 73 #include <dev/mii/miivar.h> 74 #include <dev/mii/miidevs.h> 75 76 #include <dev/mii/sqphyreg.h> 77 78 int sqphymatch(struct device *, void *, void *); 79 void sqphyattach(struct device *, struct device *, void *); 80 81 struct cfattach sqphy_ca = { 82 sizeof(struct mii_softc), sqphymatch, sqphyattach, mii_phy_detach, 83 mii_phy_activate 84 }; 85 86 struct cfdriver sqphy_cd = { 87 NULL, "sqphy", DV_DULL 88 }; 89 90 int sqphy_service(struct mii_softc *, struct mii_data *, int); 91 void sqphy_status(struct mii_softc *); 92 93 const struct mii_phy_funcs sqphy_funcs = { 94 sqphy_service, sqphy_status, mii_phy_reset, 95 }; 96 97 static const struct mii_phydesc sqphys[] = { 98 { MII_OUI_xxSEEQ, MII_MODEL_xxSEEQ_80220, 99 MII_STR_xxSEEQ_80220 }, 100 { MII_OUI_xxSEEQ, MII_MODEL_xxSEEQ_80225, 101 MII_STR_xxSEEQ_80225 }, 102 { MII_OUI_xxSEEQ, MII_MODEL_xxSEEQ_84220, 103 MII_STR_xxSEEQ_84220 }, 104 105 { 0, 0, 106 NULL }, 107 }; 108 109 int 110 sqphymatch(struct device *parent, void *match, void *aux) 111 { 112 struct mii_attach_args *ma = aux; 113 114 if (mii_phy_match(ma, sqphys) != NULL) 115 return (10); 116 117 return (0); 118 } 119 120 void 121 sqphyattach(struct device *parent, struct device *self, void *aux) 122 { 123 struct mii_softc *sc = (struct mii_softc *)self; 124 struct mii_attach_args *ma = aux; 125 struct mii_data *mii = ma->mii_data; 126 const struct mii_phydesc *mpd; 127 128 mpd = mii_phy_match(ma, sqphys); 129 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 130 131 sc->mii_inst = mii->mii_instance; 132 sc->mii_phy = ma->mii_phyno; 133 sc->mii_funcs = &sqphy_funcs; 134 sc->mii_pdata = mii; 135 sc->mii_flags = ma->mii_flags; 136 137 PHY_RESET(sc); 138 139 sc->mii_capabilities = 140 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 141 if (sc->mii_capabilities & BMSR_MEDIAMASK) 142 mii_phy_add_media(sc); 143 } 144 145 int 146 sqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 147 { 148 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 149 int reg; 150 151 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 152 return (ENXIO); 153 154 switch (cmd) { 155 case MII_POLLSTAT: 156 /* 157 * If we're not polling our PHY instance, just return. 158 */ 159 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 160 return (0); 161 break; 162 163 case MII_MEDIACHG: 164 /* 165 * If the media indicates a different PHY instance, 166 * isolate ourselves. 167 */ 168 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 169 reg = PHY_READ(sc, MII_BMCR); 170 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 171 return (0); 172 } 173 174 /* 175 * If the interface is not up, don't do anything. 176 */ 177 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 178 break; 179 180 mii_phy_setmedia(sc); 181 break; 182 183 case MII_TICK: 184 /* 185 * If we're not currently selected, just return. 186 */ 187 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 188 return (0); 189 190 if (mii_phy_tick(sc) == EJUSTRETURN) 191 return (0); 192 break; 193 194 case MII_DOWN: 195 mii_phy_down(sc); 196 return (0); 197 } 198 199 /* Update the media status. */ 200 mii_phy_status(sc); 201 202 /* Callback if something changed. */ 203 mii_phy_update(sc, cmd); 204 return (0); 205 } 206 207 void 208 sqphy_status(struct mii_softc *sc) 209 { 210 struct mii_data *mii = sc->mii_pdata; 211 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 212 int bmsr, bmcr, status; 213 214 mii->mii_media_status = IFM_AVALID; 215 mii->mii_media_active = IFM_ETHER; 216 217 bmsr = PHY_READ(sc, MII_BMSR) | 218 PHY_READ(sc, MII_BMSR); 219 if (bmsr & BMSR_LINK) 220 mii->mii_media_status |= IFM_ACTIVE; 221 222 bmcr = PHY_READ(sc, MII_BMCR); 223 if (bmcr & BMCR_ISO) { 224 mii->mii_media_active |= IFM_NONE; 225 mii->mii_media_status = 0; 226 return; 227 } 228 229 if (bmcr & BMCR_LOOP) 230 mii->mii_media_active |= IFM_LOOP; 231 232 if (bmcr & BMCR_AUTOEN) { 233 if ((bmsr & BMSR_ACOMP) == 0) { 234 /* Erg, still trying, I guess... */ 235 mii->mii_media_active |= IFM_NONE; 236 return; 237 } 238 /* 239 * Note: don't get fancy here -- the 80225 only 240 * supports the SPD_DET and DPLX_DET bits in 241 * the STATUS register. 242 */ 243 status = PHY_READ(sc, MII_SQPHY_STATUS); 244 if (status & STATUS_SPD_DET) 245 mii->mii_media_active |= IFM_100_TX; 246 else 247 mii->mii_media_active |= IFM_10_T; 248 249 if (status & STATUS_DPLX_DET) 250 mii->mii_media_active |= IFM_FDX; 251 else 252 mii->mii_media_active |= IFM_HDX; 253 } else 254 mii->mii_media_active = ife->ifm_media; 255 } 256