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_var.h> 87 #include <net/if_media.h> 88 89 #include "mii.h" 90 #include "miivar.h" 91 #include "miidevs.h" 92 93 #include "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 int lxtphy_service(struct mii_softc *, struct mii_data *, int); 101 static void lxtphy_status(struct mii_softc *); 102 static void lxtphy_reset(struct mii_softc *); 103 static void lxtphy_set_tp(struct mii_softc *); 104 static void lxtphy_set_fx(struct mii_softc *); 105 106 static device_method_t lxtphy_methods[] = { 107 /* device interface */ 108 DEVMETHOD(device_probe, lxtphy_probe), 109 DEVMETHOD(device_attach, lxtphy_attach), 110 DEVMETHOD(device_detach, ukphy_detach), 111 DEVMETHOD(device_shutdown, bus_generic_shutdown), 112 DEVMETHOD_END 113 }; 114 115 static const struct mii_phydesc lxtphys[] = { 116 MII_PHYDESC_ARG(xxLEVEL1, LXT970, lxtphy_status), 117 MII_PHYDESC_ARG(xxLEVEL1a, LXT971, ukphy_status), 118 MII_PHYDESC_NULL 119 }; 120 121 static devclass_t lxtphy_devclass; 122 123 static driver_t lxtphy_driver = { 124 "lxtphy", 125 lxtphy_methods, 126 sizeof(struct mii_softc) 127 }; 128 129 DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, NULL, NULL); 130 131 static int 132 lxtphy_probe(device_t dev) 133 { 134 struct mii_attach_args *ma = device_get_ivars(dev); 135 const struct mii_phydesc *mpd; 136 137 mpd = mii_phy_match(ma, lxtphys); 138 if (mpd != NULL) { 139 struct mii_softc *sc = device_get_softc(dev); 140 141 sc->mii_status = mpd->mpd_priv; 142 device_set_desc(dev, mpd->mpd_name); 143 return (0); 144 } 145 return (ENXIO); 146 } 147 148 static int 149 lxtphy_attach(device_t dev) 150 { 151 struct mii_softc *sc; 152 struct mii_attach_args *ma; 153 struct mii_data *mii; 154 155 sc = device_get_softc(dev); 156 ma = device_get_ivars(dev); 157 mii_softc_init(sc, ma); 158 sc->mii_dev = device_get_parent(dev); 159 mii = device_get_softc(sc->mii_dev); 160 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 161 162 sc->mii_inst = mii->mii_instance; 163 sc->mii_service = lxtphy_service; 164 sc->mii_reset = lxtphy_reset; 165 sc->mii_pdata = mii; 166 sc->mii_flags |= MIIF_NOISOLATE; 167 168 lxtphy_reset(sc); 169 170 mii->mii_instance++; 171 172 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 173 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 174 MII_MEDIA_NONE); 175 #undef ADD 176 177 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 178 179 device_printf(dev, " "); 180 if (sc->mii_capabilities & BMSR_MEDIAMASK) 181 mii_phy_add_media(sc); 182 else 183 kprintf("no media present"); 184 kprintf("\n"); 185 186 MIIBUS_MEDIAINIT(sc->mii_dev); 187 return(0); 188 } 189 190 static int 191 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 192 { 193 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 194 int reg; 195 196 switch (cmd) { 197 case MII_POLLSTAT: 198 /* 199 * If we're not polling our PHY instance, just return. 200 */ 201 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 202 return (0); 203 break; 204 205 case MII_MEDIACHG: 206 /* 207 * If the media indicates a different PHY instance, 208 * isolate ourselves. 209 */ 210 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 211 reg = PHY_READ(sc, MII_BMCR); 212 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 213 return (0); 214 } 215 216 /* 217 * If the interface is not up, don't do anything. 218 */ 219 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 220 break; 221 222 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 223 lxtphy_set_fx(sc); 224 else 225 lxtphy_set_tp(sc); 226 227 mii_phy_set_media(sc); 228 break; 229 230 case MII_TICK: 231 /* 232 * If we're not currently selected, just return. 233 */ 234 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 235 return (0); 236 237 if (mii_phy_tick(sc) == EJUSTRETURN) 238 return (0); 239 break; 240 } 241 242 /* Update the media status. */ 243 sc->mii_status(sc); 244 245 /* Callback if something changed. */ 246 mii_phy_update(sc, cmd); 247 return (0); 248 } 249 250 static void 251 lxtphy_status(struct mii_softc *sc) 252 { 253 struct mii_data *mii = sc->mii_pdata; 254 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 255 int bmcr, bmsr, csr; 256 257 mii->mii_media_status = IFM_AVALID; 258 mii->mii_media_active = IFM_ETHER; 259 260 /* 261 * Get link status from the CSR; we need to read the CSR 262 * for media type anyhow, and the link status in the CSR 263 * doens't latch, so fewer register reads are required. 264 */ 265 csr = PHY_READ(sc, MII_LXTPHY_CSR); 266 if (csr & CSR_LINK) 267 mii->mii_media_status |= IFM_ACTIVE; 268 269 bmcr = PHY_READ(sc, MII_BMCR); 270 if (bmcr & BMCR_ISO) { 271 mii->mii_media_active |= IFM_NONE; 272 mii->mii_media_status = 0; 273 return; 274 } 275 276 if (bmcr & BMCR_LOOP) 277 mii->mii_media_active |= IFM_LOOP; 278 279 if (bmcr & BMCR_AUTOEN) { 280 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 281 if ((bmsr & BMSR_ACOMP) == 0) { 282 /* Erg, still trying, I guess... */ 283 mii->mii_media_active |= IFM_NONE; 284 return; 285 } 286 if (csr & CSR_SPEED) 287 mii->mii_media_active |= IFM_100_TX; 288 else 289 mii->mii_media_active |= IFM_10_T; 290 if (csr & CSR_DUPLEX) 291 mii->mii_media_active |= IFM_FDX; 292 } else 293 mii->mii_media_active = ife->ifm_media; 294 } 295 296 static void 297 lxtphy_set_tp(struct mii_softc *sc) 298 { 299 int cfg; 300 301 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 302 cfg &= ~CONFIG_100BASEFX; 303 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 304 } 305 306 static void 307 lxtphy_set_fx(struct mii_softc *sc) 308 { 309 int cfg; 310 311 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 312 cfg |= CONFIG_100BASEFX; 313 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 314 } 315 316 static void 317 lxtphy_reset(struct mii_softc *sc) 318 { 319 mii_phy_reset(sc); 320 #if 0 321 PHY_WRITE(sc, MII_LXTPHY_IER, 322 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); 323 #endif 324 } 325