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 const char *nic; 143 144 sc = device_get_softc(dev); 145 ma = device_get_ivars(dev); 146 sc->mii_dev = device_get_parent(dev); 147 mii = device_get_softc(sc->mii_dev); 148 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 149 150 sc->mii_inst = mii->mii_instance; 151 sc->mii_phy = ma->mii_phyno; 152 sc->mii_service = lxtphy_service; 153 sc->mii_pdata = mii; 154 155 mii->mii_instance++; 156 157 mii_phy_reset(sc); 158 159 sc->mii_capabilities = 160 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 161 device_printf(dev, " "); 162 163 /* 164 * On Apple BMAC controllers, we end up in a weird state 165 * of partially-completed autonegotiation on boot. So 166 * force autonegotation to try again. 167 */ 168 nic = device_get_name(device_get_parent(sc->mii_dev)); 169 if (strcmp(nic, "bm") == 0) 170 sc->mii_flags |= MIIF_FORCEANEG | MIIF_NOISOLATE; 171 172 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 173 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 174 MII_MEDIA_100_TX); 175 printf("100baseFX, "); 176 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 177 MII_MEDIA_100_TX_FDX); 178 printf("100baseFX-FDX, "); 179 #undef ADD 180 181 mii_phy_add_media(sc); 182 printf("\n"); 183 184 MIIBUS_MEDIAINIT(sc->mii_dev); 185 return (0); 186 } 187 188 static int 189 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 190 { 191 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 192 int reg; 193 194 switch (cmd) { 195 case MII_POLLSTAT: 196 /* 197 * If we're not polling our PHY instance, just return. 198 */ 199 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 200 return (0); 201 break; 202 203 case MII_MEDIACHG: 204 /* 205 * If the media indicates a different PHY instance, 206 * isolate ourselves. 207 */ 208 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 209 reg = PHY_READ(sc, MII_BMCR); 210 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 211 return (0); 212 } 213 214 /* 215 * If the interface is not up, don't do anything. 216 */ 217 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 218 break; 219 220 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 221 lxtphy_set_fx(sc); 222 else 223 lxtphy_set_tp(sc); 224 225 mii_phy_setmedia(sc); 226 break; 227 228 case MII_TICK: 229 /* 230 * If we're not currently selected, just return. 231 */ 232 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 233 return (0); 234 if (mii_phy_tick(sc) == EJUSTRETURN) 235 return (0); 236 break; 237 } 238 239 /* Update the media status. */ 240 lxtphy_status(sc); 241 242 /* Callback if something changed. */ 243 mii_phy_update(sc, cmd); 244 return (0); 245 } 246 247 static void 248 lxtphy_status(struct mii_softc *sc) 249 { 250 struct mii_data *mii = sc->mii_pdata; 251 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 252 int bmcr, bmsr, csr; 253 254 mii->mii_media_status = IFM_AVALID; 255 mii->mii_media_active = IFM_ETHER; 256 257 /* 258 * Get link status from the CSR; we need to read the CSR 259 * for media type anyhow, and the link status in the CSR 260 * doens't latch, so fewer register reads are required. 261 */ 262 csr = PHY_READ(sc, MII_LXTPHY_CSR); 263 if (csr & CSR_LINK) 264 mii->mii_media_status |= IFM_ACTIVE; 265 266 bmcr = PHY_READ(sc, MII_BMCR); 267 if (bmcr & BMCR_ISO) { 268 mii->mii_media_active |= IFM_NONE; 269 mii->mii_media_status = 0; 270 return; 271 } 272 273 if (bmcr & BMCR_LOOP) 274 mii->mii_media_active |= IFM_LOOP; 275 276 if (bmcr & BMCR_AUTOEN) { 277 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 278 if ((bmsr & BMSR_ACOMP) == 0) { 279 /* Erg, still trying, I guess... */ 280 mii->mii_media_active |= IFM_NONE; 281 return; 282 } 283 if (csr & CSR_SPEED) 284 mii->mii_media_active |= IFM_100_TX; 285 else 286 mii->mii_media_active |= IFM_10_T; 287 if (csr & CSR_DUPLEX) 288 mii->mii_media_active |= IFM_FDX; 289 } else 290 mii->mii_media_active = ife->ifm_media; 291 } 292 293 static void 294 lxtphy_set_tp(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 } 302 303 static void 304 lxtphy_set_fx(struct mii_softc *sc) 305 { 306 int cfg; 307 308 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 309 cfg |= CONFIG_100BASEFX; 310 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 311 } 312