1 /* $NetBSD: icsphy.c,v 1.41 2006/11/16 21:24:07 christos Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause-NetBSD 5 * 6 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 11 * NASA Ames Research Center. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 49 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 50 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 51 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 52 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 53 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 54 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 55 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 56 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 57 */ 58 59 #include <sys/cdefs.h> 60 __FBSDID("$FreeBSD$"); 61 62 /* 63 * driver for Integrated Circuit Systems' ICS1889-1893 ethernet 10/100 PHY 64 * datasheet from www.icst.com 65 */ 66 67 #include <sys/param.h> 68 #include <sys/systm.h> 69 #include <sys/kernel.h> 70 #include <sys/module.h> 71 #include <sys/socket.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/icsphyreg.h> 82 83 #include "miibus_if.h" 84 85 static int icsphy_probe(device_t dev); 86 static int icsphy_attach(device_t dev); 87 88 static device_method_t icsphy_methods[] = { 89 /* device interface */ 90 DEVMETHOD(device_probe, icsphy_probe), 91 DEVMETHOD(device_attach, icsphy_attach), 92 DEVMETHOD(device_detach, mii_phy_detach), 93 DEVMETHOD(device_shutdown, bus_generic_shutdown), 94 DEVMETHOD_END 95 }; 96 97 static devclass_t icsphy_devclass; 98 99 static driver_t icsphy_driver = { 100 "icsphy", 101 icsphy_methods, 102 sizeof(struct mii_softc) 103 }; 104 105 DRIVER_MODULE(icsphy, miibus, icsphy_driver, icsphy_devclass, 0, 0); 106 107 static int icsphy_service(struct mii_softc *, struct mii_data *, int); 108 static void icsphy_status(struct mii_softc *); 109 static void icsphy_reset(struct mii_softc *); 110 111 static const struct mii_phydesc icsphys[] = { 112 MII_PHY_DESC(ICS, 1889), 113 MII_PHY_DESC(ICS, 1890), 114 MII_PHY_DESC(ICS, 1892), 115 MII_PHY_DESC(ICS, 1893), 116 MII_PHY_DESC(ICS, 1893C), 117 MII_PHY_END 118 }; 119 120 static const struct mii_phy_funcs icsphy_funcs = { 121 icsphy_service, 122 icsphy_status, 123 icsphy_reset 124 }; 125 126 static int 127 icsphy_probe(device_t dev) 128 { 129 130 return (mii_phy_dev_probe(dev, icsphys, BUS_PROBE_DEFAULT)); 131 } 132 133 static int 134 icsphy_attach(device_t dev) 135 { 136 137 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 138 &icsphy_funcs, 1); 139 return (0); 140 } 141 142 static int 143 icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 144 { 145 146 switch (cmd) { 147 case MII_POLLSTAT: 148 break; 149 150 case MII_MEDIACHG: 151 mii_phy_setmedia(sc); 152 break; 153 154 case MII_TICK: 155 if (mii_phy_tick(sc) == EJUSTRETURN) 156 return (0); 157 break; 158 } 159 160 /* Update the media status. */ 161 PHY_STATUS(sc); 162 163 /* Callback if something changed. */ 164 mii_phy_update(sc, cmd); 165 return (0); 166 } 167 168 static void 169 icsphy_status(struct mii_softc *sc) 170 { 171 struct mii_data *mii = sc->mii_pdata; 172 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 173 int bmcr, qpr; 174 175 mii->mii_media_status = IFM_AVALID; 176 mii->mii_media_active = IFM_ETHER; 177 178 /* 179 * Don't get link from the BMSR. It's available in the QPR, 180 * and we have to read it twice to unlatch it anyhow. This 181 * gives us fewer register reads. 182 */ 183 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 184 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 185 186 if (qpr & QPR_LINK) 187 mii->mii_media_status |= IFM_ACTIVE; 188 189 bmcr = PHY_READ(sc, MII_BMCR); 190 if (bmcr & BMCR_ISO) { 191 mii->mii_media_active |= IFM_NONE; 192 mii->mii_media_status = 0; 193 return; 194 } 195 196 if (bmcr & BMCR_LOOP) 197 mii->mii_media_active |= IFM_LOOP; 198 199 if (bmcr & BMCR_AUTOEN) { 200 if ((qpr & QPR_ACOMP) == 0) { 201 /* Erg, still trying, I guess... */ 202 mii->mii_media_active |= IFM_NONE; 203 return; 204 } 205 if (qpr & QPR_SPEED) 206 mii->mii_media_active |= IFM_100_TX; 207 else 208 mii->mii_media_active |= IFM_10_T; 209 if (qpr & QPR_FDX) 210 mii->mii_media_active |= 211 IFM_FDX | mii_phy_flowstatus(sc); 212 else 213 mii->mii_media_active |= IFM_HDX; 214 } else 215 mii->mii_media_active = ife->ifm_media; 216 } 217 218 static void 219 icsphy_reset(struct mii_softc *sc) 220 { 221 222 mii_phy_reset(sc); 223 /* set powerdown feature */ 224 switch (sc->mii_mpd_model) { 225 case MII_MODEL_ICS_1890: 226 case MII_MODEL_ICS_1893: 227 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_100AUTOPWRDN); 228 break; 229 case MII_MODEL_ICS_1892: 230 PHY_WRITE(sc, MII_ICSPHY_ECR2, 231 ECR2_10AUTOPWRDN|ECR2_100AUTOPWRDN); 232 break; 233 default: 234 /* 1889 have no ECR2 */ 235 break; 236 } 237 /* 238 * There is no description that the reset do auto-negotiation in the 239 * data sheet. 240 */ 241 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX); 242 } 243