lxtphy.c revision 1.50.16.1
1 /* $NetBSD: lxtphy.c,v 1.50.16.1 2019/01/26 22:00:06 pgoyette 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 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 /* 58 * driver for Level One's LXT-970 ethernet 10/100 PHY 59 * datasheet from www.level1.com 60 */ 61 62 #include <sys/cdefs.h> 63 __KERNEL_RCSID(0, "$NetBSD: lxtphy.c,v 1.50.16.1 2019/01/26 22:00:06 pgoyette Exp $"); 64 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/kernel.h> 68 #include <sys/device.h> 69 #include <sys/socket.h> 70 #include <sys/errno.h> 71 72 #include <net/if.h> 73 #include <net/if_media.h> 74 75 #include <dev/mii/mii.h> 76 #include <dev/mii/miivar.h> 77 #include <dev/mii/miidevs.h> 78 79 #include <dev/mii/lxtphyreg.h> 80 81 static int lxtphymatch(device_t, cfdata_t, void *); 82 static void lxtphyattach(device_t, device_t, void *); 83 84 CFATTACH_DECL_NEW(lxtphy, sizeof(struct mii_softc), 85 lxtphymatch, lxtphyattach, mii_phy_detach, mii_phy_activate); 86 87 static int lxtphy_service(struct mii_softc *, struct mii_data *, int); 88 static void lxtphy_status(struct mii_softc *); 89 static void lxtphy_reset(struct mii_softc *); 90 91 static void lxtphy_set_tp(struct mii_softc *); 92 static void lxtphy_set_fx(struct mii_softc *); 93 94 static const struct mii_phy_funcs lxtphy_funcs = { 95 lxtphy_service, lxtphy_status, lxtphy_reset, 96 }; 97 98 static const struct mii_phy_funcs lxtphy971_funcs = { 99 lxtphy_service, ukphy_status, lxtphy_reset, 100 }; 101 102 static const struct mii_phydesc lxtphys[] = { 103 { MII_OUI_xxLEVEL1, MII_MODEL_xxLEVEL1_LXT970, 104 MII_STR_xxLEVEL1_LXT970 }, 105 106 { MII_OUI_LEVEL1, MII_MODEL_LEVEL1_LXT971, 107 MII_STR_LEVEL1_LXT971 }, 108 109 { 0, 0, 110 NULL }, 111 }; 112 113 static int 114 lxtphymatch(device_t parent, cfdata_t match, void *aux) 115 { 116 struct mii_attach_args *ma = aux; 117 118 if (mii_phy_match(ma, lxtphys) != NULL) 119 return (10); 120 121 return (0); 122 } 123 124 static void 125 lxtphyattach(device_t parent, device_t self, void *aux) 126 { 127 struct mii_softc *sc = device_private(self); 128 struct mii_attach_args *ma = aux; 129 struct mii_data *mii = ma->mii_data; 130 const struct mii_phydesc *mpd; 131 132 mpd = mii_phy_match(ma, lxtphys); 133 aprint_naive(": Media interface\n"); 134 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 135 136 sc->mii_dev = self; 137 sc->mii_inst = mii->mii_instance; 138 sc->mii_phy = ma->mii_phyno; 139 if (mpd->mpd_model == MII_MODEL_LEVEL1_LXT971) 140 sc->mii_funcs = &lxtphy971_funcs; 141 else 142 sc->mii_funcs = &lxtphy_funcs; 143 sc->mii_pdata = mii; 144 sc->mii_flags = ma->mii_flags; 145 sc->mii_anegticks = MII_ANEGTICKS; 146 147 PHY_RESET(sc); 148 149 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 150 sc->mii_capabilities &= ma->mii_capmask; 151 aprint_normal_dev(self, ""); 152 153 if (sc->mii_flags & MIIF_HAVEFIBER) { 154 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 155 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 156 MII_MEDIA_100_TX); 157 aprint_normal("100baseFX, "); 158 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 159 MII_MEDIA_100_TX_FDX); 160 aprint_normal("100baseFX-FDX, "); 161 #undef ADD 162 } 163 164 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 165 aprint_error("no media present"); 166 else 167 mii_phy_add_media(sc); 168 aprint_normal("\n"); 169 } 170 171 static int 172 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 173 { 174 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 175 uint16_t reg; 176 177 switch (cmd) { 178 case MII_POLLSTAT: 179 /* 180 * If we're not polling our PHY instance, just return. 181 */ 182 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 183 return (0); 184 break; 185 186 case MII_MEDIACHG: 187 /* 188 * If the media indicates a different PHY instance, 189 * isolate ourselves. 190 */ 191 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 192 PHY_READ(sc, MII_BMCR, ®); 193 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 194 return (0); 195 } 196 197 /* 198 * If the interface is not up, don't do anything. 199 */ 200 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 201 break; 202 203 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 204 lxtphy_set_fx(sc); 205 else 206 lxtphy_set_tp(sc); 207 208 mii_phy_setmedia(sc); 209 break; 210 211 case MII_TICK: 212 /* 213 * If we're not currently selected, just return. 214 */ 215 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 216 return (0); 217 218 if (mii_phy_tick(sc) == EJUSTRETURN) 219 return (0); 220 break; 221 222 case MII_DOWN: 223 mii_phy_down(sc); 224 return (0); 225 } 226 227 /* Update the media status. */ 228 mii_phy_status(sc); 229 230 /* Callback if something changed. */ 231 mii_phy_update(sc, cmd); 232 return (0); 233 } 234 235 static void 236 lxtphy_status(struct mii_softc *sc) 237 { 238 struct mii_data *mii = sc->mii_pdata; 239 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 240 uint16_t bmcr, bmsr, csr; 241 242 mii->mii_media_status = IFM_AVALID; 243 mii->mii_media_active = IFM_ETHER; 244 245 /* 246 * Get link status from the CSR; we need to read the CSR 247 * for media type anyhow, and the link status in the CSR 248 * doens't latch, so fewer register reads are required. 249 */ 250 PHY_READ(sc, MII_LXTPHY_CSR, &csr); 251 if (csr & CSR_LINK) 252 mii->mii_media_status |= IFM_ACTIVE; 253 254 PHY_READ(sc, MII_BMCR, &bmcr); 255 if (bmcr & BMCR_ISO) { 256 mii->mii_media_active |= IFM_NONE; 257 mii->mii_media_status = 0; 258 return; 259 } 260 261 if (bmcr & BMCR_LOOP) 262 mii->mii_media_active |= IFM_LOOP; 263 264 if (bmcr & BMCR_AUTOEN) { 265 PHY_READ(sc, MII_BMSR, &bmsr); 266 PHY_READ(sc, MII_BMSR, &bmsr); 267 if ((bmsr & BMSR_ACOMP) == 0) { 268 /* Erg, still trying, I guess... */ 269 mii->mii_media_active |= IFM_NONE; 270 return; 271 } 272 if (csr & CSR_SPEED) 273 mii->mii_media_active |= IFM_100_TX; 274 else 275 mii->mii_media_active |= IFM_10_T; 276 277 if (csr & CSR_DUPLEX) 278 mii->mii_media_active |= IFM_FDX; 279 else 280 mii->mii_media_active |= IFM_HDX; 281 } else 282 mii->mii_media_active = ife->ifm_media; 283 } 284 285 static void 286 lxtphy_reset(struct mii_softc *sc) 287 { 288 uint16_t ier; 289 290 mii_phy_reset(sc); 291 PHY_READ(sc, MII_LXTPHY_IER, &ier); 292 ier &= ~IER_INTEN; 293 PHY_WRITE(sc, MII_LXTPHY_IER, ier); 294 } 295 296 static void 297 lxtphy_set_tp(struct mii_softc *sc) 298 { 299 uint16_t cfg; 300 301 PHY_READ(sc, MII_LXTPHY_CONFIG, &cfg); 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 uint16_t cfg; 310 311 PHY_READ(sc, MII_LXTPHY_CONFIG, &cfg); 312 cfg |= CONFIG_100BASEFX; 313 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 314 } 315
Indexes created Tue Oct 21 12:09:54 GMT 2025