1 /* $NetBSD: icsphy.c,v 1.41 2006/11/16 21:24:07 christos Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause 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 /* 61 * driver for Integrated Circuit Systems' ICS1889-1893 ethernet 10/100 PHY 62 * datasheet from www.icst.com 63 */ 64 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/kernel.h> 68 #include <sys/module.h> 69 #include <sys/socket.h> 70 #include <sys/bus.h> 71 72 #include <net/if.h> 73 #include <net/if_media.h> 74 75 #include <dev/mii/mii.h> 76 #include <dev/mii/miivar.h> 77 #include "miidevs.h" 78 79 #include <dev/mii/icsphyreg.h> 80 81 #include "miibus_if.h" 82 83 static int icsphy_probe(device_t dev); 84 static int icsphy_attach(device_t dev); 85 86 static device_method_t icsphy_methods[] = { 87 /* device interface */ 88 DEVMETHOD(device_probe, icsphy_probe), 89 DEVMETHOD(device_attach, icsphy_attach), 90 DEVMETHOD(device_detach, mii_phy_detach), 91 DEVMETHOD(device_shutdown, bus_generic_shutdown), 92 DEVMETHOD_END 93 }; 94 95 static driver_t icsphy_driver = { 96 "icsphy", 97 icsphy_methods, 98 sizeof(struct mii_softc) 99 }; 100 101 DRIVER_MODULE(icsphy, miibus, icsphy_driver, 0, 0); 102 103 static int icsphy_service(struct mii_softc *, struct mii_data *, int); 104 static void icsphy_status(struct mii_softc *); 105 static void icsphy_reset(struct mii_softc *); 106 107 static const struct mii_phydesc icsphys[] = { 108 MII_PHY_DESC(ICS, 1889), 109 MII_PHY_DESC(ICS, 1890), 110 MII_PHY_DESC(ICS, 1892), 111 MII_PHY_DESC(ICS, 1893), 112 MII_PHY_DESC(ICS, 1893C), 113 MII_PHY_END 114 }; 115 116 static const struct mii_phy_funcs icsphy_funcs = { 117 icsphy_service, 118 icsphy_status, 119 icsphy_reset 120 }; 121 122 static int 123 icsphy_probe(device_t dev) 124 { 125 126 return (mii_phy_dev_probe(dev, icsphys, BUS_PROBE_DEFAULT)); 127 } 128 129 static int 130 icsphy_attach(device_t dev) 131 { 132 133 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 134 &icsphy_funcs, 1); 135 return (0); 136 } 137 138 static int 139 icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 140 { 141 142 switch (cmd) { 143 case MII_POLLSTAT: 144 break; 145 146 case MII_MEDIACHG: 147 mii_phy_setmedia(sc); 148 break; 149 150 case MII_TICK: 151 if (mii_phy_tick(sc) == EJUSTRETURN) 152 return (0); 153 break; 154 } 155 156 /* Update the media status. */ 157 PHY_STATUS(sc); 158 159 /* Callback if something changed. */ 160 mii_phy_update(sc, cmd); 161 return (0); 162 } 163 164 static void 165 icsphy_status(struct mii_softc *sc) 166 { 167 struct mii_data *mii = sc->mii_pdata; 168 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 169 int bmcr, qpr; 170 171 mii->mii_media_status = IFM_AVALID; 172 mii->mii_media_active = IFM_ETHER; 173 174 /* 175 * Don't get link from the BMSR. It's available in the QPR, 176 * and we have to read it twice to unlatch it anyhow. This 177 * gives us fewer register reads. 178 */ 179 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 180 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 181 182 if (qpr & QPR_LINK) 183 mii->mii_media_status |= IFM_ACTIVE; 184 185 bmcr = PHY_READ(sc, MII_BMCR); 186 if (bmcr & BMCR_ISO) { 187 mii->mii_media_active |= IFM_NONE; 188 mii->mii_media_status = 0; 189 return; 190 } 191 192 if (bmcr & BMCR_LOOP) 193 mii->mii_media_active |= IFM_LOOP; 194 195 if (bmcr & BMCR_AUTOEN) { 196 if ((qpr & QPR_ACOMP) == 0) { 197 /* Erg, still trying, I guess... */ 198 mii->mii_media_active |= IFM_NONE; 199 return; 200 } 201 if (qpr & QPR_SPEED) 202 mii->mii_media_active |= IFM_100_TX; 203 else 204 mii->mii_media_active |= IFM_10_T; 205 if (qpr & QPR_FDX) 206 mii->mii_media_active |= 207 IFM_FDX | mii_phy_flowstatus(sc); 208 else 209 mii->mii_media_active |= IFM_HDX; 210 } else 211 mii->mii_media_active = ife->ifm_media; 212 } 213 214 static void 215 icsphy_reset(struct mii_softc *sc) 216 { 217 218 mii_phy_reset(sc); 219 /* set powerdown feature */ 220 switch (sc->mii_mpd_model) { 221 case MII_MODEL_ICS_1890: 222 case MII_MODEL_ICS_1893: 223 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_100AUTOPWRDN); 224 break; 225 case MII_MODEL_ICS_1892: 226 PHY_WRITE(sc, MII_ICSPHY_ECR2, 227 ECR2_10AUTOPWRDN|ECR2_100AUTOPWRDN); 228 break; 229 default: 230 /* 1889 have no ECR2 */ 231 break; 232 } 233 /* 234 * There is no description that the reset do auto-negotiation in the 235 * data sheet. 236 */ 237 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX); 238 } 239