1178825Sdfr/* OpenBSD: lxtphy.c,v 1.5 2000/08/26 20:04:17 nate Exp */ 2233294Sstas/* NetBSD: lxtphy.c,v 1.19 2000/02/02 23:34:57 thorpej Exp */ 3178825Sdfr 4178825Sdfr/*- 5233294Sstas * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 6178825Sdfr * All rights reserved. 7178825Sdfr * 8178825Sdfr * This code is derived from software contributed to The NetBSD Foundation 9233294Sstas * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10178825Sdfr * NASA Ames Research Center. 11178825Sdfr * 12233294Sstas * Redistribution and use in source and binary forms, with or without 13178825Sdfr * modification, are permitted provided that the following conditions 14178825Sdfr * are met: 15178825Sdfr * 1. Redistributions of source code must retain the above copyright 16233294Sstas * notice, this list of conditions and the following disclaimer. 17178825Sdfr * 2. Redistributions in binary form must reproduce the above copyright 18178825Sdfr * notice, this list of conditions and the following disclaimer in the 19178825Sdfr * documentation and/or other materials provided with the distribution. 20233294Sstas * 21178825Sdfr * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22178825Sdfr * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23178825Sdfr * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24178825Sdfr * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25178825Sdfr * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26178825Sdfr * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27178825Sdfr * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28178825Sdfr * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29178825Sdfr * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30178825Sdfr * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31178825Sdfr * POSSIBILITY OF SUCH DAMAGE. 32178825Sdfr */ 33178825Sdfr 34178825Sdfr/*- 35178825Sdfr * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 36178825Sdfr * 37178825Sdfr * Redistribution and use in source and binary forms, with or without 38178825Sdfr * modification, are permitted provided that the following conditions 39178825Sdfr * are met: 40178825Sdfr * 1. Redistributions of source code must retain the above copyright 41178825Sdfr * notice, this list of conditions and the following disclaimer. 42233294Sstas * 2. Redistributions in binary form must reproduce the above copyright 43178825Sdfr * notice, this list of conditions and the following disclaimer in the 44178825Sdfr * documentation and/or other materials provided with the distribution. 45178825Sdfr * 46178825Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47178825Sdfr * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48178825Sdfr * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49178825Sdfr * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50178825Sdfr * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51178825Sdfr * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52178825Sdfr * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53233294Sstas * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54233294Sstas * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55233294Sstas * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56233294Sstas */ 57233294Sstas 58233294Sstas#include <sys/cdefs.h> 59233294Sstas__FBSDID("$FreeBSD$"); 60233294Sstas 61233294Sstas/* 62233294Sstas * driver for Level One's LXT-970 ethernet 10/100 PHY 63233294Sstas * datasheet from www.level1.com 64233294Sstas */ 65233294Sstas 66233294Sstas#include <sys/param.h> 67233294Sstas#include <sys/systm.h> 68233294Sstas#include <sys/kernel.h> 69233294Sstas#include <sys/socket.h> 70233294Sstas#include <sys/errno.h> 71233294Sstas#include <sys/module.h> 72233294Sstas#include <sys/bus.h> 73233294Sstas 74233294Sstas#include <net/if.h> 75233294Sstas#include <net/if_media.h> 76233294Sstas 77233294Sstas#include <dev/mii/mii.h> 78233294Sstas#include <dev/mii/miivar.h> 79233294Sstas#include "miidevs.h" 80233294Sstas 81233294Sstas#include <dev/mii/lxtphyreg.h> 82233294Sstas 83233294Sstas#include "miibus_if.h" 84233294Sstas 85233294Sstasstatic int lxtphy_probe(device_t); 86233294Sstasstatic int lxtphy_attach(device_t); 87233294Sstas 88233294Sstasstatic device_method_t lxtphy_methods[] = { 89233294Sstas /* device interface */ 90233294Sstas DEVMETHOD(device_probe, lxtphy_probe), 91233294Sstas DEVMETHOD(device_attach, lxtphy_attach), 92233294Sstas DEVMETHOD(device_detach, mii_phy_detach), 93233294Sstas DEVMETHOD(device_shutdown, bus_generic_shutdown), 94233294Sstas DEVMETHOD_END 95}; 96 97static devclass_t lxtphy_devclass; 98 99static driver_t lxtphy_driver = { 100 "lxtphy", 101 lxtphy_methods, 102 sizeof(struct mii_softc) 103}; 104 105DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, 0, 0); 106 107static int lxtphy_service(struct mii_softc *, struct mii_data *, int); 108static void lxtphy_status(struct mii_softc *); 109static void lxtphy_reset(struct mii_softc *); 110static void lxtphy_set_tp(struct mii_softc *); 111static void lxtphy_set_fx(struct mii_softc *); 112 113static const struct mii_phydesc lxtphys[] = { 114 MII_PHY_DESC(xxLEVEL1, LXT970), 115 MII_PHY_END 116}; 117 118static const struct mii_phy_funcs lxtphy_funcs = { 119 lxtphy_service, 120 lxtphy_status, 121 lxtphy_reset 122}; 123 124static int 125lxtphy_probe(device_t dev) 126{ 127 128 return (mii_phy_dev_probe(dev, lxtphys, BUS_PROBE_DEFAULT)); 129} 130 131static int 132lxtphy_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 161static int 162lxtphy_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 199static void 200lxtphy_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 248static void 249lxtphy_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 257static void 258lxtphy_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 267static void 268lxtphy_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