icsphy.c revision 1.52
1 /* $NetBSD: icsphy.c,v 1.52 2019/02/13 08:42:26 msaitoh Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 /* 58 * driver for Integrated Circuit Systems' ICS1889-1893 ethernet 10/100 PHY 59 * datasheet from www.icst.com 60 */ 61 62 #include <sys/cdefs.h> 63 __KERNEL_RCSID(0, "$NetBSD: icsphy.c,v 1.52 2019/02/13 08:42:26 msaitoh Exp $"); 64 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/kernel.h> 68 #include <sys/device.h> 69 #include <sys/socket.h> 70 71 #include <net/if.h> 72 #include <net/if_media.h> 73 74 #include <dev/mii/mii.h> 75 #include <dev/mii/miivar.h> 76 #include <dev/mii/miidevs.h> 77 78 #include <dev/mii/icsphyreg.h> 79 80 static int icsphymatch(device_t, cfdata_t, void *); 81 static void icsphyattach(device_t, device_t, void *); 82 83 CFATTACH_DECL_NEW(icsphy, sizeof(struct mii_softc), 84 icsphymatch, icsphyattach, mii_phy_detach, mii_phy_activate); 85 86 static int icsphy_service(struct mii_softc *, struct mii_data *, int); 87 static void icsphy_status(struct mii_softc *); 88 static void icsphy_reset(struct mii_softc *); 89 90 static const struct mii_phy_funcs icsphy_funcs = { 91 icsphy_service, icsphy_status, icsphy_reset, 92 }; 93 94 static const struct mii_phydesc icsphys[] = { 95 { MII_OUI_ICS, MII_MODEL_ICS_1889, 96 MII_STR_ICS_1889 }, 97 98 { MII_OUI_ICS, MII_MODEL_ICS_1890, 99 MII_STR_ICS_1890 }, 100 101 { MII_OUI_ICS, MII_MODEL_ICS_1892, 102 MII_STR_ICS_1892 }, 103 104 { MII_OUI_ICS, MII_MODEL_ICS_1893, 105 MII_STR_ICS_1893 }, 106 107 { MII_OUI_ICS, MII_MODEL_ICS_1893C, 108 MII_STR_ICS_1893C }, 109 110 { 0, 0, 111 NULL }, 112 }; 113 114 static int 115 icsphymatch(device_t parent, cfdata_t match, void *aux) 116 { 117 struct mii_attach_args *ma = aux; 118 119 if (mii_phy_match(ma, icsphys) != NULL) 120 return (10); 121 122 return (0); 123 } 124 125 static void 126 icsphyattach(device_t parent, device_t self, void *aux) 127 { 128 struct mii_softc *sc = device_private(self); 129 struct mii_attach_args *ma = aux; 130 struct mii_data *mii = ma->mii_data; 131 const struct mii_phydesc *mpd; 132 133 mpd = mii_phy_match(ma, icsphys); 134 aprint_naive(": Media interface\n"); 135 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 136 137 sc->mii_dev = self; 138 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 139 sc->mii_inst = mii->mii_instance; 140 sc->mii_phy = ma->mii_phyno; 141 sc->mii_funcs = &icsphy_funcs; 142 sc->mii_pdata = mii; 143 sc->mii_flags = ma->mii_flags; 144 sc->mii_anegticks = MII_ANEGTICKS; 145 146 PHY_RESET(sc); 147 148 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 149 sc->mii_capabilities &= ma->mii_capmask; 150 aprint_normal_dev(self, ""); 151 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 152 aprint_error("no media present"); 153 else 154 mii_phy_add_media(sc); 155 aprint_normal("\n"); 156 } 157 158 static int 159 icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 160 { 161 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 162 uint16_t reg; 163 164 switch (cmd) { 165 case MII_POLLSTAT: 166 /* 167 * If we're not polling our PHY instance, just return. 168 */ 169 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 170 return (0); 171 break; 172 173 case MII_MEDIACHG: 174 /* 175 * If the media indicates a different PHY instance, 176 * isolate ourselves. 177 */ 178 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 179 PHY_READ(sc, MII_BMCR, ®); 180 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 181 return (0); 182 } 183 184 /* 185 * If the interface is not up, don't do anything. 186 */ 187 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 188 break; 189 190 mii_phy_setmedia(sc); 191 break; 192 193 case MII_TICK: 194 /* 195 * If we're not currently selected, just return. 196 */ 197 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 198 return (0); 199 200 if (mii_phy_tick(sc) == EJUSTRETURN) 201 return (0); 202 break; 203 204 case MII_DOWN: 205 mii_phy_down(sc); 206 return (0); 207 } 208 209 /* Update the media status. */ 210 mii_phy_status(sc); 211 212 /* Callback if something changed. */ 213 mii_phy_update(sc, cmd); 214 return (0); 215 } 216 217 static void 218 icsphy_status(struct mii_softc *sc) 219 { 220 struct mii_data *mii = sc->mii_pdata; 221 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 222 uint16_t bmcr, qpr; 223 224 mii->mii_media_status = IFM_AVALID; 225 mii->mii_media_active = IFM_ETHER; 226 227 /* 228 * Don't get link from the BMSR. It's available in the QPR, 229 * and we have to read it twice to unlatch it anyhow. This 230 * gives us fewer register reads. 231 */ 232 PHY_READ(sc, MII_ICSPHY_QPR, &qpr); /* unlatch */ 233 PHY_READ(sc, MII_ICSPHY_QPR, &qpr); /* real value */ 234 235 if (qpr & QPR_LINK) 236 mii->mii_media_status |= IFM_ACTIVE; 237 238 PHY_READ(sc, MII_BMCR, &bmcr); 239 if (bmcr & BMCR_ISO) { 240 mii->mii_media_active |= IFM_NONE; 241 mii->mii_media_status = 0; 242 return; 243 } 244 245 if (bmcr & BMCR_LOOP) 246 mii->mii_media_active |= IFM_LOOP; 247 248 if (bmcr & BMCR_AUTOEN) { 249 if ((qpr & QPR_ACOMP) == 0) { 250 /* Erg, still trying, I guess... */ 251 mii->mii_media_active |= IFM_NONE; 252 return; 253 } 254 if (qpr & QPR_SPEED) 255 mii->mii_media_active |= IFM_100_TX; 256 else 257 mii->mii_media_active |= IFM_10_T; 258 259 if (qpr & QPR_FDX) 260 mii->mii_media_active |= IFM_FDX; 261 else 262 mii->mii_media_active |= IFM_HDX; 263 } else 264 mii->mii_media_active = ife->ifm_media; 265 } 266 267 static void 268 icsphy_reset(struct mii_softc *sc) 269 { 270 271 mii_phy_reset(sc); 272 /* set powerdown feature */ 273 switch (sc->mii_mpd_model) { 274 case MII_MODEL_ICS_1890: 275 case MII_MODEL_ICS_1893: 276 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_100AUTOPWRDN); 277 break; 278 case MII_MODEL_ICS_1892: 279 PHY_WRITE(sc, MII_ICSPHY_ECR2, 280 ECR2_10AUTOPWRDN|ECR2_100AUTOPWRDN); 281 break; 282 default: 283 /* 1889 have no ECR2 */ 284 break; 285 } 286 /* 287 * There is no description that the reset do auto-negotiation in the 288 * data sheet. 289 */ 290 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX); 291 } 292
Indexes created Mon Oct 13 16:09:52 GMT 2025