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 __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 driver_t icsphy_driver = { 98 "icsphy", 99 icsphy_methods, 100 sizeof(struct mii_softc) 101 }; 102 103 DRIVER_MODULE(icsphy, miibus, icsphy_driver, 0, 0); 104 105 static int icsphy_service(struct mii_softc *, struct mii_data *, int); 106 static void icsphy_status(struct mii_softc *); 107 static void icsphy_reset(struct mii_softc *); 108 109 static const struct mii_phydesc icsphys[] = { 110 MII_PHY_DESC(ICS, 1889), 111 MII_PHY_DESC(ICS, 1890), 112 MII_PHY_DESC(ICS, 1892), 113 MII_PHY_DESC(ICS, 1893), 114 MII_PHY_DESC(ICS, 1893C), 115 MII_PHY_END 116 }; 117 118 static const struct mii_phy_funcs icsphy_funcs = { 119 icsphy_service, 120 icsphy_status, 121 icsphy_reset 122 }; 123 124 static int 125 icsphy_probe(device_t dev) 126 { 127 128 return (mii_phy_dev_probe(dev, icsphys, BUS_PROBE_DEFAULT)); 129 } 130 131 static int 132 icsphy_attach(device_t dev) 133 { 134 135 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 136 &icsphy_funcs, 1); 137 return (0); 138 } 139 140 static int 141 icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 142 { 143 144 switch (cmd) { 145 case MII_POLLSTAT: 146 break; 147 148 case MII_MEDIACHG: 149 mii_phy_setmedia(sc); 150 break; 151 152 case MII_TICK: 153 if (mii_phy_tick(sc) == EJUSTRETURN) 154 return (0); 155 break; 156 } 157 158 /* Update the media status. */ 159 PHY_STATUS(sc); 160 161 /* Callback if something changed. */ 162 mii_phy_update(sc, cmd); 163 return (0); 164 } 165 166 static void 167 icsphy_status(struct mii_softc *sc) 168 { 169 struct mii_data *mii = sc->mii_pdata; 170 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 171 int bmcr, qpr; 172 173 mii->mii_media_status = IFM_AVALID; 174 mii->mii_media_active = IFM_ETHER; 175 176 /* 177 * Don't get link from the BMSR. It's available in the QPR, 178 * and we have to read it twice to unlatch it anyhow. This 179 * gives us fewer register reads. 180 */ 181 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */ 182 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */ 183 184 if (qpr & QPR_LINK) 185 mii->mii_media_status |= IFM_ACTIVE; 186 187 bmcr = PHY_READ(sc, MII_BMCR); 188 if (bmcr & BMCR_ISO) { 189 mii->mii_media_active |= IFM_NONE; 190 mii->mii_media_status = 0; 191 return; 192 } 193 194 if (bmcr & BMCR_LOOP) 195 mii->mii_media_active |= IFM_LOOP; 196 197 if (bmcr & BMCR_AUTOEN) { 198 if ((qpr & QPR_ACOMP) == 0) { 199 /* Erg, still trying, I guess... */ 200 mii->mii_media_active |= IFM_NONE; 201 return; 202 } 203 if (qpr & QPR_SPEED) 204 mii->mii_media_active |= IFM_100_TX; 205 else 206 mii->mii_media_active |= IFM_10_T; 207 if (qpr & QPR_FDX) 208 mii->mii_media_active |= 209 IFM_FDX | mii_phy_flowstatus(sc); 210 else 211 mii->mii_media_active |= IFM_HDX; 212 } else 213 mii->mii_media_active = ife->ifm_media; 214 } 215 216 static void 217 icsphy_reset(struct mii_softc *sc) 218 { 219 220 mii_phy_reset(sc); 221 /* set powerdown feature */ 222 switch (sc->mii_mpd_model) { 223 case MII_MODEL_ICS_1890: 224 case MII_MODEL_ICS_1893: 225 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_100AUTOPWRDN); 226 break; 227 case MII_MODEL_ICS_1892: 228 PHY_WRITE(sc, MII_ICSPHY_ECR2, 229 ECR2_10AUTOPWRDN|ECR2_100AUTOPWRDN); 230 break; 231 default: 232 /* 1889 have no ECR2 */ 233 break; 234 } 235 /* 236 * There is no description that the reset do auto-negotiation in the 237 * data sheet. 238 */ 239 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX); 240 } 241