lxtphy.c revision 330897
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-NetBSD 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: stable/11/sys/dev/mii/lxtphy.c 330897 2018-03-14 03:19:51Z eadler $"); 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 87static int lxtphy_probe(device_t); 88static int lxtphy_attach(device_t); 89 90static 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 99static devclass_t lxtphy_devclass; 100 101static driver_t lxtphy_driver = { 102 "lxtphy", 103 lxtphy_methods, 104 sizeof(struct mii_softc) 105}; 106 107DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, 0, 0); 108 109static int lxtphy_service(struct mii_softc *, struct mii_data *, int); 110static void lxtphy_status(struct mii_softc *); 111static void lxtphy_reset(struct mii_softc *); 112static void lxtphy_set_tp(struct mii_softc *); 113static void lxtphy_set_fx(struct mii_softc *); 114 115static const struct mii_phydesc lxtphys[] = { 116 MII_PHY_DESC(xxLEVEL1, LXT970), 117 MII_PHY_END 118}; 119 120static const struct mii_phy_funcs lxtphy_funcs = { 121 lxtphy_service, 122 lxtphy_status, 123 lxtphy_reset 124}; 125 126static int 127lxtphy_probe(device_t dev) 128{ 129 130 return (mii_phy_dev_probe(dev, lxtphys, BUS_PROBE_DEFAULT)); 131} 132 133static int 134lxtphy_attach(device_t dev) 135{ 136 struct mii_softc *sc; 137 138 sc = device_get_softc(dev); 139 140 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &lxtphy_funcs, 0); 141 142 PHY_RESET(sc); 143 144 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask; 145 device_printf(dev, " "); 146 147#define ADD(m) ifmedia_add(&sc->mii_pdata->mii_media, (m), 0, NULL) 148 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst)); 149 printf("100baseFX, "); 150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst)); 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 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 172 lxtphy_set_fx(sc); 173 else 174 lxtphy_set_tp(sc); 175 176 mii_phy_setmedia(sc); 177 break; 178 179 case MII_TICK: 180 if (mii_phy_tick(sc) == EJUSTRETURN) 181 return (0); 182 break; 183 } 184 185 /* Update the media status. */ 186 PHY_STATUS(sc); 187 188 /* Callback if something changed. */ 189 mii_phy_update(sc, cmd); 190 return (0); 191} 192 193static void 194lxtphy_status(struct mii_softc *sc) 195{ 196 struct mii_data *mii = sc->mii_pdata; 197 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 198 int bmcr, bmsr, csr; 199 200 mii->mii_media_status = IFM_AVALID; 201 mii->mii_media_active = IFM_ETHER; 202 203 /* 204 * Get link status from the CSR; we need to read the CSR 205 * for media type anyhow, and the link status in the CSR 206 * doens't latch, so fewer register reads are required. 207 */ 208 csr = PHY_READ(sc, MII_LXTPHY_CSR); 209 if (csr & CSR_LINK) 210 mii->mii_media_status |= IFM_ACTIVE; 211 212 bmcr = PHY_READ(sc, MII_BMCR); 213 if (bmcr & BMCR_ISO) { 214 mii->mii_media_active |= IFM_NONE; 215 mii->mii_media_status = 0; 216 return; 217 } 218 219 if (bmcr & BMCR_LOOP) 220 mii->mii_media_active |= IFM_LOOP; 221 222 if (bmcr & BMCR_AUTOEN) { 223 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 224 if ((bmsr & BMSR_ACOMP) == 0) { 225 /* Erg, still trying, I guess... */ 226 mii->mii_media_active |= IFM_NONE; 227 return; 228 } 229 if (csr & CSR_SPEED) 230 mii->mii_media_active |= IFM_100_TX; 231 else 232 mii->mii_media_active |= IFM_10_T; 233 if (csr & CSR_DUPLEX) 234 mii->mii_media_active |= 235 IFM_FDX | mii_phy_flowstatus(sc); 236 else 237 mii->mii_media_active |= IFM_HDX; 238 } else 239 mii->mii_media_active = ife->ifm_media; 240} 241 242static void 243lxtphy_reset(struct mii_softc *sc) 244{ 245 246 mii_phy_reset(sc); 247 PHY_WRITE(sc, MII_LXTPHY_IER, 248 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); 249} 250 251static void 252lxtphy_set_tp(struct mii_softc *sc) 253{ 254 int cfg; 255 256 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 257 cfg &= ~CONFIG_100BASEFX; 258 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 259} 260 261static void 262lxtphy_set_fx(struct mii_softc *sc) 263{ 264 int cfg; 265 266 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 267 cfg |= CONFIG_100BASEFX; 268 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 269} 270