1 /* $NetBSD: qsphy.c,v 1.35 2005/12/11 12:22:42 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by Manuel Bouyer. 54 * 4. The name of the author may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 /* 70 * driver for Quality Semiconductor's QS6612 ethernet 10/100 PHY 71 * datasheet from www.qualitysemi.com 72 */ 73 74 #include <sys/cdefs.h> 75 __KERNEL_RCSID(0, "$NetBSD: qsphy.c,v 1.35 2005/12/11 12:22:42 christos Exp $"); 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/device.h> 81 #include <sys/socket.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/qsphyreg.h> 91 92 static int qsphymatch(struct device *, struct cfdata *, void *); 93 static void qsphyattach(struct device *, struct device *, void *); 94 95 CFATTACH_DECL(qsphy, sizeof(struct mii_softc), 96 qsphymatch, qsphyattach, mii_phy_detach, mii_phy_activate); 97 98 static int qsphy_service(struct mii_softc *, struct mii_data *, int); 99 static void qsphy_status(struct mii_softc *); 100 static void qsphy_reset(struct mii_softc *); 101 102 static const struct mii_phy_funcs qsphy_funcs = { 103 qsphy_service, qsphy_status, qsphy_reset, 104 }; 105 106 static const struct mii_phydesc qsphys[] = { 107 { MII_OUI_xxQUALSEMI, MII_MODEL_xxQUALSEMI_QS6612, 108 MII_STR_xxQUALSEMI_QS6612 }, 109 110 { 0, 0, 111 NULL }, 112 }; 113 114 static int 115 qsphymatch(struct device *parent, struct cfdata *match, void *aux) 116 { 117 struct mii_attach_args *ma = aux; 118 119 if (mii_phy_match(ma, qsphys) != NULL) 120 return (10); 121 122 return (0); 123 } 124 125 static void 126 qsphyattach(struct device *parent, struct device *self, 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 const struct mii_phydesc *mpd; 132 133 mpd = mii_phy_match(ma, qsphys); 134 aprint_naive(": Media interface\n"); 135 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 136 137 sc->mii_inst = mii->mii_instance; 138 sc->mii_phy = ma->mii_phyno; 139 sc->mii_funcs = &qsphy_funcs; 140 sc->mii_pdata = mii; 141 sc->mii_flags = ma->mii_flags; 142 sc->mii_anegticks = 5; 143 144 PHY_RESET(sc); 145 146 sc->mii_capabilities = 147 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 148 aprint_normal("%s: ", sc->mii_dev.dv_xname); 149 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 150 aprint_error("no media present"); 151 else 152 mii_phy_add_media(sc); 153 aprint_normal("\n"); 154 } 155 156 static int 157 qsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 158 { 159 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 160 int reg; 161 162 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 163 return (ENXIO); 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 qsphy_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 bmsr, bmcr, pctl; 224 225 mii->mii_media_status = IFM_AVALID; 226 mii->mii_media_active = IFM_ETHER; 227 228 bmsr = PHY_READ(sc, MII_BMSR) | 229 PHY_READ(sc, MII_BMSR); 230 if (bmsr & BMSR_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 if ((bmsr & BMSR_ACOMP) == 0) { 245 /* Erg, still trying, I guess... */ 246 mii->mii_media_active |= IFM_NONE; 247 return; 248 } 249 pctl = PHY_READ(sc, MII_QSPHY_PCTL) | 250 PHY_READ(sc, MII_QSPHY_PCTL); 251 switch (pctl & PCTL_OPMASK) { 252 case PCTL_10_T: 253 mii->mii_media_active |= IFM_10_T; 254 break; 255 case PCTL_10_T_FDX: 256 mii->mii_media_active |= IFM_10_T|IFM_FDX; 257 break; 258 case PCTL_100_TX: 259 mii->mii_media_active |= IFM_100_TX; 260 break; 261 case PCTL_100_TX_FDX: 262 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 263 break; 264 case PCTL_100_T4: 265 mii->mii_media_active |= IFM_100_T4; 266 break; 267 default: 268 /* Erg... this shouldn't happen. */ 269 mii->mii_media_active |= IFM_NONE; 270 break; 271 } 272 } else 273 mii->mii_media_active = ife->ifm_media; 274 } 275 276 static void 277 qsphy_reset(struct mii_softc *sc) 278 { 279 280 mii_phy_reset(sc); 281 PHY_WRITE(sc, MII_QSPHY_IMASK, 0); 282 } 283