1 /* $NetBSD: qsphy.c,v 1.45 2008/05/04 17:06:10 xtraeme 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 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by Manuel Bouyer. 47 * 4. The name of the author may not be used to endorse or promote products 48 * derived from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 53 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 54 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 55 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 59 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 */ 61 62 /* 63 * driver for Quality Semiconductor's QS6612 ethernet 10/100 PHY 64 * datasheet from www.qualitysemi.com 65 */ 66 67 #include <sys/cdefs.h> 68 __KERNEL_RCSID(0, "$NetBSD: qsphy.c,v 1.45 2008/05/04 17:06:10 xtraeme Exp $"); 69 70 #include <sys/param.h> 71 #include <sys/systm.h> 72 #include <sys/kernel.h> 73 #include <sys/device.h> 74 #include <sys/socket.h> 75 76 #include <net/if.h> 77 #include <net/if_media.h> 78 79 #include <dev/mii/mii.h> 80 #include <dev/mii/miivar.h> 81 #include <dev/mii/miidevs.h> 82 83 #include <dev/mii/qsphyreg.h> 84 85 static int qsphymatch(device_t, cfdata_t, void *); 86 static void qsphyattach(device_t, device_t, void *); 87 88 CFATTACH_DECL_NEW(qsphy, sizeof(struct mii_softc), 89 qsphymatch, qsphyattach, mii_phy_detach, mii_phy_activate); 90 91 static int qsphy_service(struct mii_softc *, struct mii_data *, int); 92 static void qsphy_status(struct mii_softc *); 93 static void qsphy_reset(struct mii_softc *); 94 95 static const struct mii_phy_funcs qsphy_funcs = { 96 qsphy_service, qsphy_status, qsphy_reset, 97 }; 98 99 static const struct mii_phydesc qsphys[] = { 100 { MII_OUI_xxQUALSEMI, MII_MODEL_xxQUALSEMI_QS6612, 101 MII_STR_xxQUALSEMI_QS6612 }, 102 103 { 0, 0, 104 NULL }, 105 }; 106 107 static int 108 qsphymatch(device_t parent, cfdata_t match, void *aux) 109 { 110 struct mii_attach_args *ma = aux; 111 112 if (mii_phy_match(ma, qsphys) != NULL) 113 return (10); 114 115 return (0); 116 } 117 118 static void 119 qsphyattach(device_t parent, device_t self, void *aux) 120 { 121 struct mii_softc *sc = device_private(self); 122 struct mii_attach_args *ma = aux; 123 struct mii_data *mii = ma->mii_data; 124 const struct mii_phydesc *mpd; 125 126 mpd = mii_phy_match(ma, qsphys); 127 aprint_naive(": Media interface\n"); 128 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 129 130 sc->mii_dev = self; 131 sc->mii_inst = mii->mii_instance; 132 sc->mii_phy = ma->mii_phyno; 133 sc->mii_funcs = &qsphy_funcs; 134 sc->mii_pdata = mii; 135 sc->mii_flags = ma->mii_flags; 136 sc->mii_anegticks = MII_ANEGTICKS; 137 138 PHY_RESET(sc); 139 140 sc->mii_capabilities = 141 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 142 aprint_normal_dev(self, ""); 143 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 144 aprint_error("no media present"); 145 else 146 mii_phy_add_media(sc); 147 aprint_normal("\n"); 148 149 if (!pmf_device_register(self, NULL, mii_phy_resume)) 150 aprint_error_dev(self, "couldn't establish power handler\n"); 151 } 152 153 static int 154 qsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 155 { 156 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 157 int reg; 158 159 switch (cmd) { 160 case MII_POLLSTAT: 161 /* 162 * If we're not polling our PHY instance, just return. 163 */ 164 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 165 return (0); 166 break; 167 168 case MII_MEDIACHG: 169 /* 170 * If the media indicates a different PHY instance, 171 * isolate ourselves. 172 */ 173 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 174 reg = PHY_READ(sc, MII_BMCR); 175 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 176 return (0); 177 } 178 179 /* 180 * If the interface is not up, don't do anything. 181 */ 182 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 183 break; 184 185 mii_phy_setmedia(sc); 186 break; 187 188 case MII_TICK: 189 /* 190 * If we're not currently selected, just return. 191 */ 192 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 193 return (0); 194 195 if (mii_phy_tick(sc) == EJUSTRETURN) 196 return (0); 197 break; 198 199 case MII_DOWN: 200 mii_phy_down(sc); 201 return (0); 202 } 203 204 /* Update the media status. */ 205 mii_phy_status(sc); 206 207 /* Callback if something changed. */ 208 mii_phy_update(sc, cmd); 209 return (0); 210 } 211 212 static void 213 qsphy_status(struct mii_softc *sc) 214 { 215 struct mii_data *mii = sc->mii_pdata; 216 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 217 int bmsr, bmcr, pctl; 218 219 mii->mii_media_status = IFM_AVALID; 220 mii->mii_media_active = IFM_ETHER; 221 222 bmsr = PHY_READ(sc, MII_BMSR) | 223 PHY_READ(sc, MII_BMSR); 224 if (bmsr & BMSR_LINK) 225 mii->mii_media_status |= IFM_ACTIVE; 226 227 bmcr = PHY_READ(sc, MII_BMCR); 228 if (bmcr & BMCR_ISO) { 229 mii->mii_media_active |= IFM_NONE; 230 mii->mii_media_status = 0; 231 return; 232 } 233 234 if (bmcr & BMCR_LOOP) 235 mii->mii_media_active |= IFM_LOOP; 236 237 if (bmcr & BMCR_AUTOEN) { 238 if ((bmsr & BMSR_ACOMP) == 0) { 239 /* Erg, still trying, I guess... */ 240 mii->mii_media_active |= IFM_NONE; 241 return; 242 } 243 pctl = PHY_READ(sc, MII_QSPHY_PCTL) | 244 PHY_READ(sc, MII_QSPHY_PCTL); 245 switch (pctl & PCTL_OPMASK) { 246 case PCTL_10_T: 247 mii->mii_media_active |= IFM_10_T; 248 break; 249 case PCTL_10_T_FDX: 250 mii->mii_media_active |= IFM_10_T|IFM_FDX; 251 break; 252 case PCTL_100_TX: 253 mii->mii_media_active |= IFM_100_TX; 254 break; 255 case PCTL_100_TX_FDX: 256 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 257 break; 258 case PCTL_100_T4: 259 mii->mii_media_active |= IFM_100_T4; 260 break; 261 default: 262 /* Erg... this shouldn't happen. */ 263 mii->mii_media_active |= IFM_NONE; 264 break; 265 } 266 } else 267 mii->mii_media_active = ife->ifm_media; 268 } 269 270 static void 271 qsphy_reset(struct mii_softc *sc) 272 { 273 274 mii_phy_reset(sc); 275 PHY_WRITE(sc, MII_QSPHY_IMASK, 0); 276 } 277