1 /* $NetBSD: qsphy.c,v 1.47 2009/10/19 18:41:14 bouyer 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 * 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 Quality Semiconductor's QS6612 ethernet 10/100 PHY 59 * datasheet from www.qualitysemi.com 60 */ 61 62 #include <sys/cdefs.h> 63 __KERNEL_RCSID(0, "$NetBSD: qsphy.c,v 1.47 2009/10/19 18:41:14 bouyer Exp $"); 64 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/kernel.h> 68 #include <sys/device.h> 69 #include <sys/socket.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/qsphyreg.h> 79 80 static int qsphymatch(device_t, cfdata_t, void *); 81 static void qsphyattach(device_t, device_t, void *); 82 83 CFATTACH_DECL_NEW(qsphy, sizeof(struct mii_softc), 84 qsphymatch, qsphyattach, mii_phy_detach, mii_phy_activate); 85 86 static int qsphy_service(struct mii_softc *, struct mii_data *, int); 87 static void qsphy_status(struct mii_softc *); 88 static void qsphy_reset(struct mii_softc *); 89 90 static const struct mii_phy_funcs qsphy_funcs = { 91 qsphy_service, qsphy_status, qsphy_reset, 92 }; 93 94 static const struct mii_phydesc qsphys[] = { 95 { MII_OUI_xxQUALSEMI, MII_MODEL_xxQUALSEMI_QS6612, 96 MII_STR_xxQUALSEMI_QS6612 }, 97 98 { 0, 0, 99 NULL }, 100 }; 101 102 static int 103 qsphymatch(device_t parent, cfdata_t match, void *aux) 104 { 105 struct mii_attach_args *ma = aux; 106 107 if (mii_phy_match(ma, qsphys) != NULL) 108 return (10); 109 110 return (0); 111 } 112 113 static void 114 qsphyattach(device_t parent, device_t self, void *aux) 115 { 116 struct mii_softc *sc = device_private(self); 117 struct mii_attach_args *ma = aux; 118 struct mii_data *mii = ma->mii_data; 119 const struct mii_phydesc *mpd; 120 121 mpd = mii_phy_match(ma, qsphys); 122 aprint_naive(": Media interface\n"); 123 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 124 125 sc->mii_dev = self; 126 sc->mii_inst = mii->mii_instance; 127 sc->mii_phy = ma->mii_phyno; 128 sc->mii_funcs = &qsphy_funcs; 129 sc->mii_pdata = mii; 130 sc->mii_flags = ma->mii_flags; 131 sc->mii_anegticks = MII_ANEGTICKS; 132 133 PHY_RESET(sc); 134 135 sc->mii_capabilities = 136 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 137 aprint_normal_dev(self, ""); 138 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 139 aprint_error("no media present"); 140 else 141 mii_phy_add_media(sc); 142 aprint_normal("\n"); 143 } 144 145 static int 146 qsphy_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 switch (cmd) { 152 case MII_POLLSTAT: 153 /* 154 * If we're not polling our PHY instance, just return. 155 */ 156 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 157 return (0); 158 break; 159 160 case MII_MEDIACHG: 161 /* 162 * If the media indicates a different PHY instance, 163 * isolate ourselves. 164 */ 165 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 166 reg = PHY_READ(sc, MII_BMCR); 167 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 168 return (0); 169 } 170 171 /* 172 * If the interface is not up, don't do anything. 173 */ 174 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 175 break; 176 177 mii_phy_setmedia(sc); 178 break; 179 180 case MII_TICK: 181 /* 182 * If we're not currently selected, just return. 183 */ 184 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 185 return (0); 186 187 if (mii_phy_tick(sc) == EJUSTRETURN) 188 return (0); 189 break; 190 191 case MII_DOWN: 192 mii_phy_down(sc); 193 return (0); 194 } 195 196 /* Update the media status. */ 197 mii_phy_status(sc); 198 199 /* Callback if something changed. */ 200 mii_phy_update(sc, cmd); 201 return (0); 202 } 203 204 static void 205 qsphy_status(struct mii_softc *sc) 206 { 207 struct mii_data *mii = sc->mii_pdata; 208 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 209 int bmsr, bmcr, pctl; 210 211 mii->mii_media_status = IFM_AVALID; 212 mii->mii_media_active = IFM_ETHER; 213 214 bmsr = PHY_READ(sc, MII_BMSR) | 215 PHY_READ(sc, MII_BMSR); 216 if (bmsr & BMSR_LINK) 217 mii->mii_media_status |= IFM_ACTIVE; 218 219 bmcr = PHY_READ(sc, MII_BMCR); 220 if (bmcr & BMCR_ISO) { 221 mii->mii_media_active |= IFM_NONE; 222 mii->mii_media_status = 0; 223 return; 224 } 225 226 if (bmcr & BMCR_LOOP) 227 mii->mii_media_active |= IFM_LOOP; 228 229 if (bmcr & BMCR_AUTOEN) { 230 if ((bmsr & BMSR_ACOMP) == 0) { 231 /* Erg, still trying, I guess... */ 232 mii->mii_media_active |= IFM_NONE; 233 return; 234 } 235 pctl = PHY_READ(sc, MII_QSPHY_PCTL) | 236 PHY_READ(sc, MII_QSPHY_PCTL); 237 switch (pctl & PCTL_OPMASK) { 238 case PCTL_10_T: 239 mii->mii_media_active |= IFM_10_T; 240 break; 241 case PCTL_10_T_FDX: 242 mii->mii_media_active |= IFM_10_T|IFM_FDX; 243 break; 244 case PCTL_100_TX: 245 mii->mii_media_active |= IFM_100_TX; 246 break; 247 case PCTL_100_TX_FDX: 248 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 249 break; 250 case PCTL_100_T4: 251 mii->mii_media_active |= IFM_100_T4; 252 break; 253 default: 254 /* Erg... this shouldn't happen. */ 255 mii->mii_media_active |= IFM_NONE; 256 break; 257 } 258 } else 259 mii->mii_media_active = ife->ifm_media; 260 } 261 262 static void 263 qsphy_reset(struct mii_softc *sc) 264 { 265 266 mii_phy_reset(sc); 267 PHY_WRITE(sc, MII_QSPHY_IMASK, 0); 268 } 269