1 /* $OpenBSD: lxtphy.c,v 1.14 2005/02/19 06:00:04 brad 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 * $FreeBSD: src/sys/dev/mii/lxtphy.c,v 1.1.2.1 2001/06/08 19:58:33 semenu Exp $ 41 */ 42 43 /* 44 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by Manuel Bouyer. 57 * 4. The name of the author may not be used to endorse or promote products 58 * derived from this software without specific prior written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 61 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 63 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 64 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 65 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 66 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 67 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 68 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 69 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 70 */ 71 72 /* 73 * driver for Level One's LXT-970/LXT-971 ethernet 10/100 PHY 74 * datasheet from www.level1.com 75 */ 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/socket.h> 81 #include <sys/errno.h> 82 #include <sys/module.h> 83 #include <sys/bus.h> 84 85 #include <net/if.h> 86 #include <net/if_media.h> 87 88 #include "mii.h" 89 #include "miivar.h" 90 #include "miidevs.h" 91 92 #include "lxtphyreg.h" 93 94 #include "miibus_if.h" 95 96 static int lxtphy_probe(device_t); 97 static int lxtphy_attach(device_t); 98 99 static int lxtphy_service(struct mii_softc *, struct mii_data *, int); 100 static void lxtphy_status(struct mii_softc *); 101 static void lxtphy_reset(struct mii_softc *); 102 static void lxtphy_set_tp(struct mii_softc *); 103 static void lxtphy_set_fx(struct mii_softc *); 104 105 static device_method_t lxtphy_methods[] = { 106 /* device interface */ 107 DEVMETHOD(device_probe, lxtphy_probe), 108 DEVMETHOD(device_attach, lxtphy_attach), 109 DEVMETHOD(device_detach, ukphy_detach), 110 DEVMETHOD(device_shutdown, bus_generic_shutdown), 111 DEVMETHOD_END 112 }; 113 114 static const struct mii_phydesc lxtphys[] = { 115 MII_PHYDESC_ARG(xxLEVEL1, LXT970, lxtphy_status), 116 MII_PHYDESC_ARG(xxLEVEL1a, LXT971, ukphy_status), 117 MII_PHYDESC_NULL 118 }; 119 120 static devclass_t lxtphy_devclass; 121 122 static driver_t lxtphy_driver = { 123 "lxtphy", 124 lxtphy_methods, 125 sizeof(struct mii_softc) 126 }; 127 128 DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, NULL, NULL); 129 130 static int 131 lxtphy_probe(device_t dev) 132 { 133 struct mii_attach_args *ma = device_get_ivars(dev); 134 const struct mii_phydesc *mpd; 135 136 mpd = mii_phy_match(ma, lxtphys); 137 if (mpd != NULL) { 138 struct mii_softc *sc = device_get_softc(dev); 139 140 sc->mii_status = mpd->mpd_priv; 141 device_set_desc(dev, mpd->mpd_name); 142 return (0); 143 } 144 return (ENXIO); 145 } 146 147 static int 148 lxtphy_attach(device_t dev) 149 { 150 struct mii_softc *sc; 151 struct mii_attach_args *ma; 152 struct mii_data *mii; 153 154 sc = device_get_softc(dev); 155 ma = device_get_ivars(dev); 156 mii_softc_init(sc, ma); 157 sc->mii_dev = device_get_parent(dev); 158 mii = device_get_softc(sc->mii_dev); 159 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 160 161 sc->mii_inst = mii->mii_instance; 162 sc->mii_service = lxtphy_service; 163 sc->mii_reset = lxtphy_reset; 164 sc->mii_pdata = mii; 165 sc->mii_flags |= MIIF_NOISOLATE; 166 167 lxtphy_reset(sc); 168 169 mii->mii_instance++; 170 171 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 172 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 173 MII_MEDIA_NONE); 174 #undef ADD 175 176 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 177 178 device_printf(dev, " "); 179 if (sc->mii_capabilities & BMSR_MEDIAMASK) 180 mii_phy_add_media(sc); 181 else 182 kprintf("no media present"); 183 kprintf("\n"); 184 185 MIIBUS_MEDIAINIT(sc->mii_dev); 186 return(0); 187 } 188 189 static int 190 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 191 { 192 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 193 int reg; 194 195 switch (cmd) { 196 case MII_POLLSTAT: 197 /* 198 * If we're not polling our PHY instance, just return. 199 */ 200 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 201 return (0); 202 break; 203 204 case MII_MEDIACHG: 205 /* 206 * If the media indicates a different PHY instance, 207 * isolate ourselves. 208 */ 209 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 210 reg = PHY_READ(sc, MII_BMCR); 211 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 212 return (0); 213 } 214 215 /* 216 * If the interface is not up, don't do anything. 217 */ 218 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 219 break; 220 221 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 222 lxtphy_set_fx(sc); 223 else 224 lxtphy_set_tp(sc); 225 226 mii_phy_set_media(sc); 227 break; 228 229 case MII_TICK: 230 /* 231 * If we're not currently selected, just return. 232 */ 233 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 234 return (0); 235 236 if (mii_phy_tick(sc) == EJUSTRETURN) 237 return (0); 238 break; 239 } 240 241 /* Update the media status. */ 242 sc->mii_status(sc); 243 244 /* Callback if something changed. */ 245 mii_phy_update(sc, cmd); 246 return (0); 247 } 248 249 static void 250 lxtphy_status(struct mii_softc *sc) 251 { 252 struct mii_data *mii = sc->mii_pdata; 253 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 254 int bmcr, bmsr, csr; 255 256 mii->mii_media_status = IFM_AVALID; 257 mii->mii_media_active = IFM_ETHER; 258 259 /* 260 * Get link status from the CSR; we need to read the CSR 261 * for media type anyhow, and the link status in the CSR 262 * doens't latch, so fewer register reads are required. 263 */ 264 csr = PHY_READ(sc, MII_LXTPHY_CSR); 265 if (csr & CSR_LINK) 266 mii->mii_media_status |= IFM_ACTIVE; 267 268 bmcr = PHY_READ(sc, MII_BMCR); 269 if (bmcr & BMCR_ISO) { 270 mii->mii_media_active |= IFM_NONE; 271 mii->mii_media_status = 0; 272 return; 273 } 274 275 if (bmcr & BMCR_LOOP) 276 mii->mii_media_active |= IFM_LOOP; 277 278 if (bmcr & BMCR_AUTOEN) { 279 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 280 if ((bmsr & BMSR_ACOMP) == 0) { 281 /* Erg, still trying, I guess... */ 282 mii->mii_media_active |= IFM_NONE; 283 return; 284 } 285 if (csr & CSR_SPEED) 286 mii->mii_media_active |= IFM_100_TX; 287 else 288 mii->mii_media_active |= IFM_10_T; 289 if (csr & CSR_DUPLEX) 290 mii->mii_media_active |= IFM_FDX; 291 } else 292 mii->mii_media_active = ife->ifm_media; 293 } 294 295 static void 296 lxtphy_set_tp(struct mii_softc *sc) 297 { 298 int cfg; 299 300 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 301 cfg &= ~CONFIG_100BASEFX; 302 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 303 } 304 305 static void 306 lxtphy_set_fx(struct mii_softc *sc) 307 { 308 int cfg; 309 310 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 311 cfg |= CONFIG_100BASEFX; 312 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 313 } 314 315 static void 316 lxtphy_reset(struct mii_softc *sc) 317 { 318 mii_phy_reset(sc); 319 #if 0 320 PHY_WRITE(sc, MII_LXTPHY_IER, 321 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); 322 #endif 323 } 324