lxtphy.c revision 1.44.2.1
1 /* $NetBSD: lxtphy.c,v 1.44.2.1 2008/05/18 12:34:13 yamt 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 Level One's LXT-970 ethernet 10/100 PHY 64 * datasheet from www.level1.com 65 */ 66 67 #include <sys/cdefs.h> 68 __KERNEL_RCSID(0, "$NetBSD: lxtphy.c,v 1.44.2.1 2008/05/18 12:34:13 yamt 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 #include <sys/errno.h> 76 77 #include <net/if.h> 78 #include <net/if_media.h> 79 80 #include <dev/mii/mii.h> 81 #include <dev/mii/miivar.h> 82 #include <dev/mii/miidevs.h> 83 84 #include <dev/mii/lxtphyreg.h> 85 86 static int lxtphymatch(device_t, cfdata_t, void *); 87 static void lxtphyattach(device_t, device_t, void *); 88 89 CFATTACH_DECL_NEW(lxtphy, sizeof(struct mii_softc), 90 lxtphymatch, lxtphyattach, mii_phy_detach, mii_phy_activate); 91 92 static int lxtphy_service(struct mii_softc *, struct mii_data *, int); 93 static void lxtphy_status(struct mii_softc *); 94 static void lxtphy_reset(struct mii_softc *); 95 96 static void lxtphy_set_tp(struct mii_softc *); 97 static void lxtphy_set_fx(struct mii_softc *); 98 99 static const struct mii_phy_funcs lxtphy_funcs = { 100 lxtphy_service, lxtphy_status, lxtphy_reset, 101 }; 102 103 static const struct mii_phy_funcs lxtphy971_funcs = { 104 lxtphy_service, ukphy_status, lxtphy_reset, 105 }; 106 107 static const struct mii_phydesc lxtphys[] = { 108 { MII_OUI_xxLEVEL1, MII_MODEL_xxLEVEL1_LXT970, 109 MII_STR_xxLEVEL1_LXT970 }, 110 111 { MII_OUI_LEVEL1, MII_MODEL_LEVEL1_LXT971, 112 MII_STR_LEVEL1_LXT971 }, 113 114 { 0, 0, 115 NULL }, 116 }; 117 118 static int 119 lxtphymatch(device_t parent, cfdata_t match, void *aux) 120 { 121 struct mii_attach_args *ma = aux; 122 123 if (mii_phy_match(ma, lxtphys) != NULL) 124 return (10); 125 126 return (0); 127 } 128 129 static void 130 lxtphyattach(device_t parent, device_t self, void *aux) 131 { 132 struct mii_softc *sc = device_private(self); 133 struct mii_attach_args *ma = aux; 134 struct mii_data *mii = ma->mii_data; 135 const struct mii_phydesc *mpd; 136 137 mpd = mii_phy_match(ma, lxtphys); 138 aprint_naive(": Media interface\n"); 139 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 140 141 sc->mii_dev = self; 142 sc->mii_inst = mii->mii_instance; 143 sc->mii_phy = ma->mii_phyno; 144 if (mpd->mpd_model == MII_MODEL_LEVEL1_LXT971) 145 sc->mii_funcs = &lxtphy971_funcs; 146 else 147 sc->mii_funcs = &lxtphy_funcs; 148 sc->mii_pdata = mii; 149 sc->mii_flags = ma->mii_flags; 150 sc->mii_anegticks = MII_ANEGTICKS; 151 152 PHY_RESET(sc); 153 154 sc->mii_capabilities = 155 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 156 aprint_normal_dev(self, ""); 157 158 if (sc->mii_flags & MIIF_HAVEFIBER) { 159 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 160 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 161 MII_MEDIA_100_TX); 162 aprint_normal("100baseFX, "); 163 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 164 MII_MEDIA_100_TX_FDX); 165 aprint_normal("100baseFX-FDX, "); 166 #undef ADD 167 } 168 169 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 170 aprint_error("no media present"); 171 else 172 mii_phy_add_media(sc); 173 aprint_normal("\n"); 174 175 if (!pmf_device_register(self, NULL, mii_phy_resume)) 176 aprint_error_dev(self, "couldn't establish power handler\n"); 177 } 178 179 static int 180 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 181 { 182 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 183 int reg; 184 185 switch (cmd) { 186 case MII_POLLSTAT: 187 /* 188 * If we're not polling our PHY instance, just return. 189 */ 190 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 191 return (0); 192 break; 193 194 case MII_MEDIACHG: 195 /* 196 * If the media indicates a different PHY instance, 197 * isolate ourselves. 198 */ 199 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 200 reg = PHY_READ(sc, MII_BMCR); 201 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 202 return (0); 203 } 204 205 /* 206 * If the interface is not up, don't do anything. 207 */ 208 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 209 break; 210 211 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 212 lxtphy_set_fx(sc); 213 else 214 lxtphy_set_tp(sc); 215 216 mii_phy_setmedia(sc); 217 break; 218 219 case MII_TICK: 220 /* 221 * If we're not currently selected, just return. 222 */ 223 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 224 return (0); 225 226 if (mii_phy_tick(sc) == EJUSTRETURN) 227 return (0); 228 break; 229 230 case MII_DOWN: 231 mii_phy_down(sc); 232 return (0); 233 } 234 235 /* Update the media status. */ 236 mii_phy_status(sc); 237 238 /* Callback if something changed. */ 239 mii_phy_update(sc, cmd); 240 return (0); 241 } 242 243 static void 244 lxtphy_status(struct mii_softc *sc) 245 { 246 struct mii_data *mii = sc->mii_pdata; 247 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 248 int bmcr, bmsr, csr; 249 250 mii->mii_media_status = IFM_AVALID; 251 mii->mii_media_active = IFM_ETHER; 252 253 /* 254 * Get link status from the CSR; we need to read the CSR 255 * for media type anyhow, and the link status in the CSR 256 * doens't latch, so fewer register reads are required. 257 */ 258 csr = PHY_READ(sc, MII_LXTPHY_CSR); 259 if (csr & CSR_LINK) 260 mii->mii_media_status |= IFM_ACTIVE; 261 262 bmcr = PHY_READ(sc, MII_BMCR); 263 if (bmcr & BMCR_ISO) { 264 mii->mii_media_active |= IFM_NONE; 265 mii->mii_media_status = 0; 266 return; 267 } 268 269 if (bmcr & BMCR_LOOP) 270 mii->mii_media_active |= IFM_LOOP; 271 272 if (bmcr & BMCR_AUTOEN) { 273 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 274 if ((bmsr & BMSR_ACOMP) == 0) { 275 /* Erg, still trying, I guess... */ 276 mii->mii_media_active |= IFM_NONE; 277 return; 278 } 279 if (csr & CSR_SPEED) 280 mii->mii_media_active |= IFM_100_TX; 281 else 282 mii->mii_media_active |= IFM_10_T; 283 if (csr & CSR_DUPLEX) 284 mii->mii_media_active |= IFM_FDX; 285 } else 286 mii->mii_media_active = ife->ifm_media; 287 } 288 289 static void 290 lxtphy_reset(struct mii_softc *sc) 291 { 292 293 mii_phy_reset(sc); 294 PHY_WRITE(sc, MII_LXTPHY_IER, 295 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); 296 } 297 298 static void 299 lxtphy_set_tp(struct mii_softc *sc) 300 { 301 int cfg; 302 303 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 304 cfg &= ~CONFIG_100BASEFX; 305 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 306 } 307 308 static void 309 lxtphy_set_fx(struct mii_softc *sc) 310 { 311 int cfg; 312 313 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 314 cfg |= CONFIG_100BASEFX; 315 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 316 } 317
Indexes created Wed Oct 22 13:09:56 GMT 2025