1 /* OpenBSD: lxtphy.c,v 1.5 2000/08/26 20:04:17 nate 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 #include <sys/cdefs.h> 71 __FBSDID("$FreeBSD$"); 72 73 /* 74 * driver for Level One's LXT-970 ethernet 10/100 PHY 75 * datasheet from www.level1.com 76 */ 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/kernel.h> 81 #include <sys/socket.h> 82 #include <sys/errno.h> 83 #include <sys/module.h> 84 #include <sys/bus.h> 85 86 #include <net/if.h> 87 #include <net/if_media.h> 88 89 #include <dev/mii/mii.h> 90 #include <dev/mii/miivar.h> 91 #include "miidevs.h" 92 93 #include <dev/mii/lxtphyreg.h> 94 95 #include "miibus_if.h" 96 97 static int lxtphy_probe(device_t); 98 static int lxtphy_attach(device_t); 99 100 static device_method_t lxtphy_methods[] = { 101 /* device interface */ 102 DEVMETHOD(device_probe, lxtphy_probe), 103 DEVMETHOD(device_attach, lxtphy_attach), 104 DEVMETHOD(device_detach, mii_phy_detach), 105 DEVMETHOD(device_shutdown, bus_generic_shutdown), 106 { 0, 0 } 107 }; 108 109 static devclass_t lxtphy_devclass; 110 111 static driver_t lxtphy_driver = { 112 "lxtphy", 113 lxtphy_methods, 114 sizeof(struct mii_softc) 115 }; 116 117 DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, 0, 0); 118 119 static int lxtphy_service(struct mii_softc *, struct mii_data *, int); 120 static void lxtphy_status(struct mii_softc *); 121 static void lxtphy_set_tp(struct mii_softc *); 122 static void lxtphy_set_fx(struct mii_softc *); 123 124 static const struct mii_phydesc lxtphys[] = { 125 MII_PHY_DESC(xxLEVEL1, LXT970), 126 MII_PHY_END 127 }; 128 129 static int 130 lxtphy_probe(device_t dev) 131 { 132 133 return (mii_phy_dev_probe(dev, lxtphys, BUS_PROBE_DEFAULT)); 134 } 135 136 static int 137 lxtphy_attach(device_t dev) 138 { 139 struct mii_softc *sc; 140 struct mii_attach_args *ma; 141 struct mii_data *mii; 142 143 sc = device_get_softc(dev); 144 ma = device_get_ivars(dev); 145 sc->mii_dev = device_get_parent(dev); 146 mii = device_get_softc(sc->mii_dev); 147 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 148 149 sc->mii_inst = mii->mii_instance; 150 sc->mii_phy = ma->mii_phyno; 151 sc->mii_service = lxtphy_service; 152 sc->mii_pdata = mii; 153 154 mii->mii_instance++; 155 156 mii_phy_reset(sc); 157 158 sc->mii_capabilities = 159 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 160 device_printf(dev, " "); 161 162 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 163 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 164 MII_MEDIA_100_TX); 165 printf("100baseFX, "); 166 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 167 MII_MEDIA_100_TX_FDX); 168 printf("100baseFX-FDX, "); 169 #undef ADD 170 171 mii_phy_add_media(sc); 172 printf("\n"); 173 174 MIIBUS_MEDIAINIT(sc->mii_dev); 175 return (0); 176 } 177 178 static int 179 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 180 { 181 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 182 int reg; 183 184 switch (cmd) { 185 case MII_POLLSTAT: 186 /* 187 * If we're not polling our PHY instance, just return. 188 */ 189 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 190 return (0); 191 break; 192 193 case MII_MEDIACHG: 194 /* 195 * If the media indicates a different PHY instance, 196 * isolate ourselves. 197 */ 198 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 199 reg = PHY_READ(sc, MII_BMCR); 200 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 201 return (0); 202 } 203 204 /* 205 * If the interface is not up, don't do anything. 206 */ 207 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 208 break; 209 210 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 211 lxtphy_set_fx(sc); 212 else 213 lxtphy_set_tp(sc); 214 215 mii_phy_setmedia(sc); 216 break; 217 218 case MII_TICK: 219 /* 220 * If we're not currently selected, just return. 221 */ 222 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 223 return (0); 224 if (mii_phy_tick(sc) == EJUSTRETURN) 225 return (0); 226 break; 227 } 228 229 /* Update the media status. */ 230 lxtphy_status(sc); 231 232 /* Callback if something changed. */ 233 mii_phy_update(sc, cmd); 234 return (0); 235 } 236 237 static void 238 lxtphy_status(struct mii_softc *sc) 239 { 240 struct mii_data *mii = sc->mii_pdata; 241 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 242 int bmcr, bmsr, csr; 243 244 mii->mii_media_status = IFM_AVALID; 245 mii->mii_media_active = IFM_ETHER; 246 247 /* 248 * Get link status from the CSR; we need to read the CSR 249 * for media type anyhow, and the link status in the CSR 250 * doens't latch, so fewer register reads are required. 251 */ 252 csr = PHY_READ(sc, MII_LXTPHY_CSR); 253 if (csr & CSR_LINK) 254 mii->mii_media_status |= IFM_ACTIVE; 255 256 bmcr = PHY_READ(sc, MII_BMCR); 257 if (bmcr & BMCR_ISO) { 258 mii->mii_media_active |= IFM_NONE; 259 mii->mii_media_status = 0; 260 return; 261 } 262 263 if (bmcr & BMCR_LOOP) 264 mii->mii_media_active |= IFM_LOOP; 265 266 if (bmcr & BMCR_AUTOEN) { 267 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 268 if ((bmsr & BMSR_ACOMP) == 0) { 269 /* Erg, still trying, I guess... */ 270 mii->mii_media_active |= IFM_NONE; 271 return; 272 } 273 if (csr & CSR_SPEED) 274 mii->mii_media_active |= IFM_100_TX; 275 else 276 mii->mii_media_active |= IFM_10_T; 277 if (csr & CSR_DUPLEX) 278 mii->mii_media_active |= IFM_FDX; 279 } else 280 mii->mii_media_active = ife->ifm_media; 281 } 282 283 static void 284 lxtphy_set_tp(struct mii_softc *sc) 285 { 286 int cfg; 287 288 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 289 cfg &= ~CONFIG_100BASEFX; 290 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 291 } 292 293 static void 294 lxtphy_set_fx(struct mii_softc *sc) 295 { 296 int cfg; 297 298 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 299 cfg |= CONFIG_100BASEFX; 300 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 301 } 302