exphy.c revision 1.49
1 /* $NetBSD: exphy.c,v 1.49 2008/04/28 20:23:53 martin 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 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by Manuel Bouyer. 47 * 4. The name of the author may not be used to endorse or promote products 48 * derived from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 53 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 54 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 55 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 59 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 */ 61 62 /* 63 * driver for 3Com internal PHYs 64 */ 65 66 #include <sys/cdefs.h> 67 __KERNEL_RCSID(0, "$NetBSD: exphy.c,v 1.49 2008/04/28 20:23:53 martin Exp $"); 68 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/kernel.h> 72 #include <sys/device.h> 73 #include <sys/socket.h> 74 75 #include <net/if.h> 76 #include <net/if_media.h> 77 78 #include <dev/mii/mii.h> 79 #include <dev/mii/miivar.h> 80 #include <dev/mii/miidevs.h> 81 82 static int exphymatch(struct device *, struct cfdata *, void *); 83 static void exphyattach(struct device *, struct device *, void *); 84 85 CFATTACH_DECL(exphy, sizeof(struct mii_softc), 86 exphymatch, exphyattach, mii_phy_detach, mii_phy_activate); 87 88 static int exphy_service(struct mii_softc *, struct mii_data *, int); 89 static void exphy_reset(struct mii_softc *); 90 91 static const struct mii_phy_funcs exphy_funcs = { 92 exphy_service, ukphy_status, exphy_reset, 93 }; 94 95 static int 96 exphymatch(struct device *parent, struct cfdata *match, void *aux) 97 { 98 struct mii_attach_args *ma = aux; 99 100 /* 101 * Argh, 3Com PHY reports oui == 0 model == 0! 102 */ 103 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 && 104 MII_MODEL(ma->mii_id2) != 0) 105 return (0); 106 107 /* 108 * Make sure the parent is an `ex'. 109 */ 110 if (!device_is_a(parent, "ex")) 111 return (0); 112 113 return (10); 114 } 115 116 static void 117 exphyattach(struct device *parent, struct device *self, void *aux) 118 { 119 struct mii_softc *sc = device_private(self); 120 struct mii_attach_args *ma = aux; 121 struct mii_data *mii = ma->mii_data; 122 123 aprint_naive(": Media interface\n"); 124 aprint_normal(": 3Com internal media interface\n"); 125 126 sc->mii_inst = mii->mii_instance; 127 sc->mii_phy = ma->mii_phyno; 128 sc->mii_funcs = &exphy_funcs; 129 sc->mii_pdata = mii; 130 sc->mii_flags = ma->mii_flags; 131 sc->mii_anegticks = MII_ANEGTICKS; 132 133 /* 134 * The 3Com PHY can never be isolated, so never allow non-zero 135 * instances! 136 */ 137 if (mii->mii_instance != 0) { 138 aprint_error_dev(self, 139 "ignoring this PHY, non-zero instance\n"); 140 return; 141 } 142 sc->mii_flags |= MIIF_NOISOLATE; 143 144 PHY_RESET(sc); 145 146 sc->mii_capabilities = 147 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 148 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 149 aprint_error_dev(self, "no media present\n"); 150 else { 151 aprint_normal_dev(self, ""); 152 mii_phy_add_media(sc); 153 aprint_normal("\n"); 154 } 155 156 if (!pmf_device_register(self, NULL, mii_phy_resume)) 157 aprint_error_dev(self, "couldn't establish power handler\n"); 158 } 159 160 static int 161 exphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 162 { 163 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 164 165 /* 166 * We can't isolate the 3Com PHY, so it has to be the only one! 167 */ 168 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 169 panic("exphy_service: can't isolate 3Com PHY"); 170 171 switch (cmd) { 172 case MII_POLLSTAT: 173 break; 174 175 case MII_MEDIACHG: 176 /* 177 * If the interface is not up, don't do anything. 178 */ 179 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 180 break; 181 182 mii_phy_setmedia(sc); 183 break; 184 185 case MII_TICK: 186 /* 187 * Only used for autonegotiation. 188 */ 189 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 190 return (0); 191 192 if (mii_phy_tick(sc) == EJUSTRETURN) 193 return (0); 194 break; 195 196 case MII_DOWN: 197 mii_phy_down(sc); 198 return (0); 199 } 200 201 /* Update the media status. */ 202 mii_phy_status(sc); 203 204 /* Callback if something changed. */ 205 mii_phy_update(sc, cmd); 206 return (0); 207 } 208 209 static void 210 exphy_reset(struct mii_softc *sc) 211 { 212 213 mii_phy_reset(sc); 214 215 /* 216 * XXX 3Com PHY doesn't set the BMCR properly after 217 * XXX reset, which breaks autonegotiation. 218 */ 219 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 220 } 221
Indexes created Fri Oct 17 03:10:13 GMT 2025