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 /* 62 * driver for Level One's LXT-970 ethernet 10/100 PHY 63 * datasheet from www.level1.com 64 */ 65 66 #include <sys/param.h> 67 #include <sys/systm.h> 68 #include <sys/kernel.h> 69 #include <sys/socket.h> 70 #include <sys/errno.h> 71 #include <sys/module.h> 72 #include <sys/bus.h> 73 74 #include <net/if.h> 75 #include <net/if_media.h> 76 77 #include <dev/mii/mii.h> 78 #include <dev/mii/miivar.h> 79 #include "miidevs.h" 80 81 #include <dev/mii/lxtphyreg.h> 82 83 #include "miibus_if.h" 84 85 static int lxtphy_probe(device_t); 86 static int lxtphy_attach(device_t); 87 88 static device_method_t lxtphy_methods[] = { 89 /* device interface */ 90 DEVMETHOD(device_probe, lxtphy_probe), 91 DEVMETHOD(device_attach, lxtphy_attach), 92 DEVMETHOD(device_detach, mii_phy_detach), 93 DEVMETHOD(device_shutdown, bus_generic_shutdown), 94 DEVMETHOD_END 95 }; 96 97 static driver_t lxtphy_driver = { 98 "lxtphy", 99 lxtphy_methods, 100 sizeof(struct mii_softc) 101 }; 102 103 DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, 0, 0); 104 105 static int lxtphy_service(struct mii_softc *, struct mii_data *, int); 106 static void lxtphy_status(struct mii_softc *); 107 static void lxtphy_reset(struct mii_softc *); 108 static void lxtphy_set_tp(struct mii_softc *); 109 static void lxtphy_set_fx(struct mii_softc *); 110 111 static const struct mii_phydesc lxtphys[] = { 112 MII_PHY_DESC(xxLEVEL1, LXT970), 113 MII_PHY_END 114 }; 115 116 static const struct mii_phy_funcs lxtphy_funcs = { 117 lxtphy_service, 118 lxtphy_status, 119 lxtphy_reset 120 }; 121 122 static int 123 lxtphy_probe(device_t dev) 124 { 125 126 return (mii_phy_dev_probe(dev, lxtphys, BUS_PROBE_DEFAULT)); 127 } 128 129 static int 130 lxtphy_attach(device_t dev) 131 { 132 struct mii_softc *sc; 133 134 sc = device_get_softc(dev); 135 136 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &lxtphy_funcs, 0); 137 138 PHY_RESET(sc); 139 140 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask; 141 device_printf(dev, " "); 142 143 #define ADD(m) ifmedia_add(&sc->mii_pdata->mii_media, (m), 0, NULL) 144 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst)); 145 printf("100baseFX, "); 146 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst)); 147 printf("100baseFX-FDX, "); 148 #undef ADD 149 150 mii_phy_add_media(sc); 151 printf("\n"); 152 153 MIIBUS_MEDIAINIT(sc->mii_dev); 154 return (0); 155 } 156 157 static int 158 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 159 { 160 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 161 162 switch (cmd) { 163 case MII_POLLSTAT: 164 break; 165 166 case MII_MEDIACHG: 167 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 168 lxtphy_set_fx(sc); 169 else 170 lxtphy_set_tp(sc); 171 172 mii_phy_setmedia(sc); 173 break; 174 175 case MII_TICK: 176 if (mii_phy_tick(sc) == EJUSTRETURN) 177 return (0); 178 break; 179 } 180 181 /* Update the media status. */ 182 PHY_STATUS(sc); 183 184 /* Callback if something changed. */ 185 mii_phy_update(sc, cmd); 186 return (0); 187 } 188 189 static void 190 lxtphy_status(struct mii_softc *sc) 191 { 192 struct mii_data *mii = sc->mii_pdata; 193 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 194 int bmcr, bmsr, csr; 195 196 mii->mii_media_status = IFM_AVALID; 197 mii->mii_media_active = IFM_ETHER; 198 199 /* 200 * Get link status from the CSR; we need to read the CSR 201 * for media type anyhow, and the link status in the CSR 202 * doesn't latch, so fewer register reads are required. 203 */ 204 csr = PHY_READ(sc, MII_LXTPHY_CSR); 205 if (csr & CSR_LINK) 206 mii->mii_media_status |= IFM_ACTIVE; 207 208 bmcr = PHY_READ(sc, MII_BMCR); 209 if (bmcr & BMCR_ISO) { 210 mii->mii_media_active |= IFM_NONE; 211 mii->mii_media_status = 0; 212 return; 213 } 214 215 if (bmcr & BMCR_LOOP) 216 mii->mii_media_active |= IFM_LOOP; 217 218 if (bmcr & BMCR_AUTOEN) { 219 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 220 if ((bmsr & BMSR_ACOMP) == 0) { 221 /* Erg, still trying, I guess... */ 222 mii->mii_media_active |= IFM_NONE; 223 return; 224 } 225 if (csr & CSR_SPEED) 226 mii->mii_media_active |= IFM_100_TX; 227 else 228 mii->mii_media_active |= IFM_10_T; 229 if (csr & CSR_DUPLEX) 230 mii->mii_media_active |= 231 IFM_FDX | mii_phy_flowstatus(sc); 232 else 233 mii->mii_media_active |= IFM_HDX; 234 } else 235 mii->mii_media_active = ife->ifm_media; 236 } 237 238 static void 239 lxtphy_reset(struct mii_softc *sc) 240 { 241 242 mii_phy_reset(sc); 243 PHY_WRITE(sc, MII_LXTPHY_IER, 244 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); 245 } 246 247 static void 248 lxtphy_set_tp(struct mii_softc *sc) 249 { 250 int cfg; 251 252 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 253 cfg &= ~CONFIG_100BASEFX; 254 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 255 } 256 257 static void 258 lxtphy_set_fx(struct mii_softc *sc) 259 { 260 int cfg; 261 262 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 263 cfg |= CONFIG_100BASEFX; 264 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 265 } 266