lxtphy.c revision 1.50.18.2
1 /* $NetBSD: lxtphy.c,v 1.50.18.2 2020/04/08 14:08:08 martin 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 1.50.18.2 2020/04/08 14:08:08 martin 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; 140 141 mii_lock(mii); 142 143 PHY_RESET(sc); 144 145 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 146 sc->mii_capabilities &= ma->mii_capmask; 147 148 mii_unlock(mii); 149 150 if (sc->mii_flags & MIIF_HAVEFIBER) { 151 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 152 mii_lock(mii); 153 sc->mii_anegticks = MII_ANEGTICKS; 154 mii_unlock(mii); 155 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 156 MII_MEDIA_100_TX); 157 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 158 MII_MEDIA_100_TX_FDX); 159 aprint_normal_dev(self, "100baseFX, 100baseFX-FDX\n"); 160 #undef ADD 161 } 162 163 mii_phy_add_media(sc); 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 KASSERT(mii_locked(mii)); 173 174 switch (cmd) { 175 case MII_POLLSTAT: 176 /* If we're not polling our PHY instance, just return. */ 177 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 178 return 0; 179 break; 180 181 case MII_MEDIACHG: 182 /* 183 * If the media indicates a different PHY instance, 184 * isolate ourselves. 185 */ 186 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 187 PHY_READ(sc, MII_BMCR, ®); 188 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 189 return 0; 190 } 191 192 /* If the interface is not up, don't do anything. */ 193 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 194 break; 195 196 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 197 lxtphy_set_fx(sc); 198 else 199 lxtphy_set_tp(sc); 200 201 mii_phy_setmedia(sc); 202 break; 203 204 case MII_TICK: 205 /* If we're not currently selected, just return. */ 206 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 207 return 0; 208 209 if (mii_phy_tick(sc) == EJUSTRETURN) 210 return 0; 211 break; 212 213 case MII_DOWN: 214 mii_phy_down(sc); 215 return 0; 216 } 217 218 /* Update the media status. */ 219 mii_phy_status(sc); 220 221 /* Callback if something changed. */ 222 mii_phy_update(sc, cmd); 223 return 0; 224 } 225 226 static void 227 lxtphy_status(struct mii_softc *sc) 228 { 229 struct mii_data *mii = sc->mii_pdata; 230 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 231 uint16_t bmcr, bmsr, csr; 232 233 KASSERT(mii_locked(mii)); 234 235 mii->mii_media_status = IFM_AVALID; 236 mii->mii_media_active = IFM_ETHER; 237 238 /* 239 * Get link status from the CSR; we need to read the CSR 240 * for media type anyhow, and the link status in the CSR 241 * doens't latch, so fewer register reads are required. 242 */ 243 PHY_READ(sc, MII_LXTPHY_CSR, &csr); 244 if (csr & CSR_LINK) 245 mii->mii_media_status |= IFM_ACTIVE; 246 247 PHY_READ(sc, MII_BMCR, &bmcr); 248 if (bmcr & BMCR_ISO) { 249 mii->mii_media_active |= IFM_NONE; 250 mii->mii_media_status = 0; 251 return; 252 } 253 254 if (bmcr & BMCR_LOOP) 255 mii->mii_media_active |= IFM_LOOP; 256 257 if (bmcr & BMCR_AUTOEN) { 258 PHY_READ(sc, MII_BMSR, &bmsr); 259 PHY_READ(sc, MII_BMSR, &bmsr); 260 if ((bmsr & BMSR_ACOMP) == 0) { 261 /* Erg, still trying, I guess... */ 262 mii->mii_media_active |= IFM_NONE; 263 return; 264 } 265 if (csr & CSR_SPEED) 266 mii->mii_media_active |= IFM_100_TX; 267 else 268 mii->mii_media_active |= IFM_10_T; 269 270 if (csr & CSR_DUPLEX) 271 mii->mii_media_active |= IFM_FDX; 272 else 273 mii->mii_media_active |= IFM_HDX; 274 } else 275 mii->mii_media_active = ife->ifm_media; 276 } 277 278 static void 279 lxtphy_reset(struct mii_softc *sc) 280 { 281 uint16_t ier; 282 283 KASSERT(mii_locked(sc->mii_pdata)); 284 285 mii_phy_reset(sc); 286 PHY_READ(sc, MII_LXTPHY_IER, &ier); 287 ier &= ~IER_INTEN; 288 PHY_WRITE(sc, MII_LXTPHY_IER, ier); 289 } 290 291 static void 292 lxtphy_set_tp(struct mii_softc *sc) 293 { 294 uint16_t cfg; 295 296 PHY_READ(sc, MII_LXTPHY_CONFIG, &cfg); 297 cfg &= ~CONFIG_100BASEFX; 298 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 299 } 300 301 static void 302 lxtphy_set_fx(struct mii_softc *sc) 303 { 304 uint16_t cfg; 305 306 PHY_READ(sc, MII_LXTPHY_CONFIG, &cfg); 307 cfg |= CONFIG_100BASEFX; 308 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 309 } 310
Indexes created Mon Oct 20 16:09:52 GMT 2025