lxtphy.c revision 1.50.18.1
1 /* $NetBSD: lxtphy.c,v 1.50.18.1 2019/06/10 22:07:14 christos 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 1.50.18.1 2019/06/10 22:07:14 christos 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_PHY_DESC(xxLEVEL1, LXT970), 104 MII_PHY_DESC(LEVEL1, LXT971), 105 MII_PHY_END, 106 }; 107 108 static int 109 lxtphymatch(device_t parent, cfdata_t match, void *aux) 110 { 111 struct mii_attach_args *ma = aux; 112 113 if (mii_phy_match(ma, lxtphys) != NULL) 114 return 10; 115 116 return 0; 117 } 118 119 static void 120 lxtphyattach(device_t parent, device_t self, void *aux) 121 { 122 struct mii_softc *sc = device_private(self); 123 struct mii_attach_args *ma = aux; 124 struct mii_data *mii = ma->mii_data; 125 const struct mii_phydesc *mpd; 126 127 mpd = mii_phy_match(ma, lxtphys); 128 aprint_naive(": Media interface\n"); 129 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 130 131 sc->mii_dev = self; 132 sc->mii_inst = mii->mii_instance; 133 sc->mii_phy = ma->mii_phyno; 134 if (mpd->mpd_model == MII_MODEL_LEVEL1_LXT971) 135 sc->mii_funcs = &lxtphy971_funcs; 136 else 137 sc->mii_funcs = &lxtphy_funcs; 138 sc->mii_pdata = mii; 139 sc->mii_flags = ma->mii_flags; 140 sc->mii_anegticks = MII_ANEGTICKS; 141 142 PHY_RESET(sc); 143 144 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 145 sc->mii_capabilities &= ma->mii_capmask; 146 aprint_normal_dev(self, ""); 147 148 if (sc->mii_flags & MIIF_HAVEFIBER) { 149 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 151 MII_MEDIA_100_TX); 152 aprint_normal("100baseFX, "); 153 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 154 MII_MEDIA_100_TX_FDX); 155 aprint_normal("100baseFX-FDX, "); 156 #undef ADD 157 } 158 159 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 160 aprint_error("no media present"); 161 else 162 mii_phy_add_media(sc); 163 aprint_normal("\n"); 164 } 165 166 static int 167 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 168 { 169 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 170 uint16_t reg; 171 172 switch (cmd) { 173 case MII_POLLSTAT: 174 /* If we're not polling our PHY instance, just return. */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 176 return 0; 177 break; 178 179 case MII_MEDIACHG: 180 /* 181 * If the media indicates a different PHY instance, 182 * isolate ourselves. 183 */ 184 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 185 PHY_READ(sc, MII_BMCR, ®); 186 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 187 return 0; 188 } 189 190 /* If the interface is not up, don't do anything. */ 191 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 192 break; 193 194 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 195 lxtphy_set_fx(sc); 196 else 197 lxtphy_set_tp(sc); 198 199 mii_phy_setmedia(sc); 200 break; 201 202 case MII_TICK: 203 /* If we're not currently selected, just return. */ 204 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 205 return 0; 206 207 if (mii_phy_tick(sc) == EJUSTRETURN) 208 return 0; 209 break; 210 211 case MII_DOWN: 212 mii_phy_down(sc); 213 return 0; 214 } 215 216 /* Update the media status. */ 217 mii_phy_status(sc); 218 219 /* Callback if something changed. */ 220 mii_phy_update(sc, cmd); 221 return 0; 222 } 223 224 static void 225 lxtphy_status(struct mii_softc *sc) 226 { 227 struct mii_data *mii = sc->mii_pdata; 228 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 229 uint16_t bmcr, bmsr, csr; 230 231 mii->mii_media_status = IFM_AVALID; 232 mii->mii_media_active = IFM_ETHER; 233 234 /* 235 * Get link status from the CSR; we need to read the CSR 236 * for media type anyhow, and the link status in the CSR 237 * doens't latch, so fewer register reads are required. 238 */ 239 PHY_READ(sc, MII_LXTPHY_CSR, &csr); 240 if (csr & CSR_LINK) 241 mii->mii_media_status |= IFM_ACTIVE; 242 243 PHY_READ(sc, MII_BMCR, &bmcr); 244 if (bmcr & BMCR_ISO) { 245 mii->mii_media_active |= IFM_NONE; 246 mii->mii_media_status = 0; 247 return; 248 } 249 250 if (bmcr & BMCR_LOOP) 251 mii->mii_media_active |= IFM_LOOP; 252 253 if (bmcr & BMCR_AUTOEN) { 254 PHY_READ(sc, MII_BMSR, &bmsr); 255 PHY_READ(sc, MII_BMSR, &bmsr); 256 if ((bmsr & BMSR_ACOMP) == 0) { 257 /* Erg, still trying, I guess... */ 258 mii->mii_media_active |= IFM_NONE; 259 return; 260 } 261 if (csr & CSR_SPEED) 262 mii->mii_media_active |= IFM_100_TX; 263 else 264 mii->mii_media_active |= IFM_10_T; 265 266 if (csr & CSR_DUPLEX) 267 mii->mii_media_active |= IFM_FDX; 268 else 269 mii->mii_media_active |= IFM_HDX; 270 } else 271 mii->mii_media_active = ife->ifm_media; 272 } 273 274 static void 275 lxtphy_reset(struct mii_softc *sc) 276 { 277 uint16_t ier; 278 279 mii_phy_reset(sc); 280 PHY_READ(sc, MII_LXTPHY_IER, &ier); 281 ier &= ~IER_INTEN; 282 PHY_WRITE(sc, MII_LXTPHY_IER, ier); 283 } 284 285 static void 286 lxtphy_set_tp(struct mii_softc *sc) 287 { 288 uint16_t cfg; 289 290 PHY_READ(sc, MII_LXTPHY_CONFIG, &cfg); 291 cfg &= ~CONFIG_100BASEFX; 292 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 293 } 294 295 static void 296 lxtphy_set_fx(struct mii_softc *sc) 297 { 298 uint16_t cfg; 299 300 PHY_READ(sc, MII_LXTPHY_CONFIG, &cfg); 301 cfg |= CONFIG_100BASEFX; 302 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 303 } 304
Indexes created Wed Oct 22 13:09:56 GMT 2025