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 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /*- 35 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58 #include <sys/cdefs.h> 59 __FBSDID("$FreeBSD$"); 60 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 devclass_t lxtphy_devclass; 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, lxtphy_devclass, 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, c) ifmedia_add(&sc->mii_pdata->mii_media, (m), (c), NULL) 146 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 147 MII_MEDIA_100_TX); 148 printf("100baseFX, "); 149 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 150 MII_MEDIA_100_TX_FDX); 151 printf("100baseFX-FDX, "); 152 #undef ADD 153 154 mii_phy_add_media(sc); 155 printf("\n"); 156 157 MIIBUS_MEDIAINIT(sc->mii_dev); 158 return (0); 159 } 160 161 static int 162 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 163 { 164 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 165 166 switch (cmd) { 167 case MII_POLLSTAT: 168 break; 169 170 case MII_MEDIACHG: 171 /* 172 * If the interface is not up, don't do anything. 173 */ 174 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 175 break; 176 177 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 178 lxtphy_set_fx(sc); 179 else 180 lxtphy_set_tp(sc); 181 182 mii_phy_setmedia(sc); 183 break; 184 185 case MII_TICK: 186 if (mii_phy_tick(sc) == EJUSTRETURN) 187 return (0); 188 break; 189 } 190 191 /* Update the media status. */ 192 PHY_STATUS(sc); 193 194 /* Callback if something changed. */ 195 mii_phy_update(sc, cmd); 196 return (0); 197 } 198 199 static void 200 lxtphy_status(struct mii_softc *sc) 201 { 202 struct mii_data *mii = sc->mii_pdata; 203 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 204 int bmcr, bmsr, csr; 205 206 mii->mii_media_status = IFM_AVALID; 207 mii->mii_media_active = IFM_ETHER; 208 209 /* 210 * Get link status from the CSR; we need to read the CSR 211 * for media type anyhow, and the link status in the CSR 212 * doens't latch, so fewer register reads are required. 213 */ 214 csr = PHY_READ(sc, MII_LXTPHY_CSR); 215 if (csr & CSR_LINK) 216 mii->mii_media_status |= IFM_ACTIVE; 217 218 bmcr = PHY_READ(sc, MII_BMCR); 219 if (bmcr & BMCR_ISO) { 220 mii->mii_media_active |= IFM_NONE; 221 mii->mii_media_status = 0; 222 return; 223 } 224 225 if (bmcr & BMCR_LOOP) 226 mii->mii_media_active |= IFM_LOOP; 227 228 if (bmcr & BMCR_AUTOEN) { 229 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 230 if ((bmsr & BMSR_ACOMP) == 0) { 231 /* Erg, still trying, I guess... */ 232 mii->mii_media_active |= IFM_NONE; 233 return; 234 } 235 if (csr & CSR_SPEED) 236 mii->mii_media_active |= IFM_100_TX; 237 else 238 mii->mii_media_active |= IFM_10_T; 239 if (csr & CSR_DUPLEX) 240 mii->mii_media_active |= 241 IFM_FDX | mii_phy_flowstatus(sc); 242 else 243 mii->mii_media_active |= IFM_HDX; 244 } else 245 mii->mii_media_active = ife->ifm_media; 246 } 247 248 static void 249 lxtphy_reset(struct mii_softc *sc) 250 { 251 252 mii_phy_reset(sc); 253 PHY_WRITE(sc, MII_LXTPHY_IER, 254 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); 255 } 256 257 static void 258 lxtphy_set_tp(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 } 266 267 static void 268 lxtphy_set_fx(struct mii_softc *sc) 269 { 270 int cfg; 271 272 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 273 cfg |= CONFIG_100BASEFX; 274 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 275 } 276