ukphy.c revision 1.41
1 /* $NetBSD: ukphy.c,v 1.41 2010/05/30 17:44:08 pgoyette 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, and by Frank van der Linden. 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 generic unknown PHYs 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: ukphy.c,v 1.41 2010/05/30 17:44:08 pgoyette Exp $"); 63 64 #include "opt_mii.h" 65 66 #include <sys/param.h> 67 #include <sys/systm.h> 68 #include <sys/kernel.h> 69 #include <sys/device.h> 70 #include <sys/socket.h> 71 #include <sys/errno.h> 72 #include <sys/module.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 80 static int ukphymatch(device_t, cfdata_t, void *); 81 static void ukphyattach(device_t, device_t, void *); 82 83 const char *(*mii_get_descr)(int, int) = mii_get_descr_stub; 84 85 CFATTACH_DECL3_NEW(ukphy, sizeof(struct mii_softc), 86 ukphymatch, ukphyattach, mii_phy_detach, mii_phy_activate, NULL, NULL, 87 DVF_DETACH_SHUTDOWN); 88 89 static int ukphy_service(struct mii_softc *, struct mii_data *, int); 90 91 static const struct mii_phy_funcs ukphy_funcs = { 92 ukphy_service, ukphy_status, mii_phy_reset, 93 }; 94 95 const char *mii_get_descr_stub(int oui, int model) 96 { 97 return NULL; 98 } 99 100 /* 101 * Routine to load/unload the miiverbose kernel module as needed 102 */ 103 void mii_verbose_ctl(bool load) 104 { 105 static int loaded = 0; 106 107 if (load) { 108 if (loaded++ == 0) 109 if (module_load("miiverbose", MODCTL_LOAD_FORCE, 110 NULL, MODULE_CLASS_MISC) !=0 ) 111 loaded = 0; 112 return; 113 } 114 if (loaded == 0) 115 return; 116 if (--loaded == 0) 117 module_unload("miiverbose"); 118 } 119 120 static int 121 ukphymatch(device_t parent, cfdata_t match, void *aux) 122 { 123 124 /* 125 * We know something is here, so always match at a low priority. 126 */ 127 return (1); 128 } 129 130 static void 131 ukphyattach(device_t parent, device_t self, void *aux) 132 { 133 struct mii_softc *sc = device_private(self); 134 struct mii_attach_args *ma = aux; 135 struct mii_data *mii = ma->mii_data; 136 int oui = MII_OUI(ma->mii_id1, ma->mii_id2); 137 int model = MII_MODEL(ma->mii_id2); 138 int rev = MII_REV(ma->mii_id2); 139 const char *descr; 140 141 mii_verbose_ctl(true); 142 if ((descr = mii_get_descr(oui, model)) != NULL) 143 aprint_normal(": %s (OUI 0x%06x, model 0x%04x), rev. %d\n", 144 descr, oui, model, rev); 145 else 146 aprint_normal(": OUI 0x%06x, model 0x%04x, rev. %d\n", 147 oui, model, rev); 148 aprint_naive(": Media interface\n"); 149 150 sc->mii_dev = self; 151 sc->mii_inst = mii->mii_instance; 152 sc->mii_phy = ma->mii_phyno; 153 sc->mii_funcs = &ukphy_funcs; 154 sc->mii_pdata = mii; 155 sc->mii_flags = ma->mii_flags; 156 sc->mii_anegticks = MII_ANEGTICKS; 157 158 /* 159 * Don't do loopback on unknown PHYs. It might confuse some of them. 160 */ 161 sc->mii_flags |= MIIF_NOLOOP; 162 163 PHY_RESET(sc); 164 165 sc->mii_capabilities = 166 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 167 if (sc->mii_capabilities & BMSR_EXTSTAT) 168 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 169 aprint_normal_dev(self, ""); 170 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 171 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 172 aprint_error("no media present"); 173 else 174 mii_phy_add_media(sc); 175 aprint_normal("\n"); 176 } 177 178 static int 179 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 180 { 181 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 182 int reg; 183 184 switch (cmd) { 185 case MII_POLLSTAT: 186 /* 187 * If we're not polling our PHY instance, just return. 188 */ 189 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 190 return (0); 191 break; 192 193 case MII_MEDIACHG: 194 /* 195 * If the media indicates a different PHY instance, 196 * isolate ourselves. 197 */ 198 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 199 reg = PHY_READ(sc, MII_BMCR); 200 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 201 return (0); 202 } 203 204 /* 205 * If the interface is not up, don't do anything. 206 */ 207 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 208 break; 209 210 mii_phy_setmedia(sc); 211 break; 212 213 case MII_TICK: 214 /* 215 * If we're not currently selected, just return. 216 */ 217 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 218 return (0); 219 220 /* 221 * Only used for autonegotiation. 222 */ 223 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 224 return (0); 225 226 if (mii_phy_tick(sc) == EJUSTRETURN) 227 return (0); 228 break; 229 230 case MII_DOWN: 231 mii_phy_down(sc); 232 return (0); 233 } 234 235 /* Update the media status. */ 236 mii_phy_status(sc); 237 238 /* Callback if something changed. */ 239 mii_phy_update(sc, cmd); 240 return (0); 241 } 242
Indexes created Sat Sep 27 14:09:57 GMT 2025