1 /* OpenBSD: lxtphy.c,v 1.5 2000/08/26 20:04:17 nate Exp */ 2 /* NetBSD: lxtphy.c,v 1.19 2000/02/02 23:34:57 thorpej Exp */ 3 4 /*- 5 * SPDX-License-Identifier: BSD-2-Clause 6 * 7 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to The NetBSD Foundation 11 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 12 * NASA Ames Research Center. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /*- 37 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 49 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 50 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 51 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 52 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 53 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 54 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 55 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 56 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 57 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 58 */ 59 60 #include <sys/cdefs.h> 61 __FBSDID("$FreeBSD$"); 62 63 /* 64 * driver for Level One's LXT-970 ethernet 10/100 PHY 65 * datasheet from www.level1.com 66 */ 67 68 #include <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/kernel.h> 71 #include <sys/socket.h> 72 #include <sys/errno.h> 73 #include <sys/module.h> 74 #include <sys/bus.h> 75 76 #include <net/if.h> 77 #include <net/if_media.h> 78 79 #include <dev/mii/mii.h> 80 #include <dev/mii/miivar.h> 81 #include "miidevs.h" 82 83 #include <dev/mii/lxtphyreg.h> 84 85 #include "miibus_if.h" 86 87 static int lxtphy_probe(device_t); 88 static int lxtphy_attach(device_t); 89 90 static device_method_t lxtphy_methods[] = { 91 /* device interface */ 92 DEVMETHOD(device_probe, lxtphy_probe), 93 DEVMETHOD(device_attach, lxtphy_attach), 94 DEVMETHOD(device_detach, mii_phy_detach), 95 DEVMETHOD(device_shutdown, bus_generic_shutdown), 96 DEVMETHOD_END 97 }; 98 99 static driver_t lxtphy_driver = { 100 "lxtphy", 101 lxtphy_methods, 102 sizeof(struct mii_softc) 103 }; 104 105 DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, 0, 0); 106 107 static int lxtphy_service(struct mii_softc *, struct mii_data *, int); 108 static void lxtphy_status(struct mii_softc *); 109 static void lxtphy_reset(struct mii_softc *); 110 static void lxtphy_set_tp(struct mii_softc *); 111 static void lxtphy_set_fx(struct mii_softc *); 112 113 static const struct mii_phydesc lxtphys[] = { 114 MII_PHY_DESC(xxLEVEL1, LXT970), 115 MII_PHY_END 116 }; 117 118 static const struct mii_phy_funcs lxtphy_funcs = { 119 lxtphy_service, 120 lxtphy_status, 121 lxtphy_reset 122 }; 123 124 static int 125 lxtphy_probe(device_t dev) 126 { 127 128 return (mii_phy_dev_probe(dev, lxtphys, BUS_PROBE_DEFAULT)); 129 } 130 131 static int 132 lxtphy_attach(device_t dev) 133 { 134 struct mii_softc *sc; 135 136 sc = device_get_softc(dev); 137 138 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &lxtphy_funcs, 0); 139 140 PHY_RESET(sc); 141 142 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask; 143 device_printf(dev, " "); 144 145 #define ADD(m) ifmedia_add(&sc->mii_pdata->mii_media, (m), 0, NULL) 146 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst)); 147 printf("100baseFX, "); 148 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst)); 149 printf("100baseFX-FDX, "); 150 #undef ADD 151 152 mii_phy_add_media(sc); 153 printf("\n"); 154 155 MIIBUS_MEDIAINIT(sc->mii_dev); 156 return (0); 157 } 158 159 static int 160 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 161 { 162 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 163 164 switch (cmd) { 165 case MII_POLLSTAT: 166 break; 167 168 case MII_MEDIACHG: 169 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 170 lxtphy_set_fx(sc); 171 else 172 lxtphy_set_tp(sc); 173 174 mii_phy_setmedia(sc); 175 break; 176 177 case MII_TICK: 178 if (mii_phy_tick(sc) == EJUSTRETURN) 179 return (0); 180 break; 181 } 182 183 /* Update the media status. */ 184 PHY_STATUS(sc); 185 186 /* Callback if something changed. */ 187 mii_phy_update(sc, cmd); 188 return (0); 189 } 190 191 static void 192 lxtphy_status(struct mii_softc *sc) 193 { 194 struct mii_data *mii = sc->mii_pdata; 195 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 196 int bmcr, bmsr, csr; 197 198 mii->mii_media_status = IFM_AVALID; 199 mii->mii_media_active = IFM_ETHER; 200 201 /* 202 * Get link status from the CSR; we need to read the CSR 203 * for media type anyhow, and the link status in the CSR 204 * doesn't latch, so fewer register reads are required. 205 */ 206 csr = PHY_READ(sc, MII_LXTPHY_CSR); 207 if (csr & CSR_LINK) 208 mii->mii_media_status |= IFM_ACTIVE; 209 210 bmcr = PHY_READ(sc, MII_BMCR); 211 if (bmcr & BMCR_ISO) { 212 mii->mii_media_active |= IFM_NONE; 213 mii->mii_media_status = 0; 214 return; 215 } 216 217 if (bmcr & BMCR_LOOP) 218 mii->mii_media_active |= IFM_LOOP; 219 220 if (bmcr & BMCR_AUTOEN) { 221 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 222 if ((bmsr & BMSR_ACOMP) == 0) { 223 /* Erg, still trying, I guess... */ 224 mii->mii_media_active |= IFM_NONE; 225 return; 226 } 227 if (csr & CSR_SPEED) 228 mii->mii_media_active |= IFM_100_TX; 229 else 230 mii->mii_media_active |= IFM_10_T; 231 if (csr & CSR_DUPLEX) 232 mii->mii_media_active |= 233 IFM_FDX | mii_phy_flowstatus(sc); 234 else 235 mii->mii_media_active |= IFM_HDX; 236 } else 237 mii->mii_media_active = ife->ifm_media; 238 } 239 240 static void 241 lxtphy_reset(struct mii_softc *sc) 242 { 243 244 mii_phy_reset(sc); 245 PHY_WRITE(sc, MII_LXTPHY_IER, 246 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); 247 } 248 249 static void 250 lxtphy_set_tp(struct mii_softc *sc) 251 { 252 int cfg; 253 254 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 255 cfg &= ~CONFIG_100BASEFX; 256 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 257 } 258 259 static void 260 lxtphy_set_fx(struct mii_softc *sc) 261 { 262 int cfg; 263 264 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 265 cfg |= CONFIG_100BASEFX; 266 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 267 } 268