1 /* $OpenBSD: rlphy.c,v 1.8 2003/06/02 19:08:58 jason Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 1999 Jason L. Wright (jason@thought.net) 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * Driver for the internal PHY found on RTL8139 based nics, based 31 * on drivers for the 'exphy' (Internal 3Com phys) and 'nsphy' 32 * (National Semiconductor DP83840). 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/device.h> 39 #include <sys/malloc.h> 40 #include <sys/socket.h> 41 #include <sys/errno.h> 42 43 #include <net/if.h> 44 #include <net/if_media.h> 45 46 #include <dev/mii/mii.h> 47 #include <dev/mii/miivar.h> 48 #include <dev/mii/miidevs.h> 49 50 int rlphymatch(struct device *, void *, void *); 51 void rlphyattach(struct device *, struct device *, void *); 52 53 struct cfattach rlphy_ca = { 54 sizeof(struct mii_softc), rlphymatch, rlphyattach, mii_phy_detach, 55 mii_phy_activate 56 }; 57 58 struct cfdriver rlphy_cd = { 59 NULL, "rlphy", DV_DULL 60 }; 61 62 int rlphy_service(struct mii_softc *, struct mii_data *, int); 63 void rlphy_reset(struct mii_softc *); 64 65 int 66 rlphymatch(parent, match, aux) 67 struct device *parent; 68 void *match; 69 void *aux; 70 { 71 struct mii_attach_args *ma = aux; 72 73 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || 74 MII_MODEL(ma->mii_id2) != 0) 75 return (0); 76 77 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "rl") != 0) 78 return (0); 79 80 /* 81 * A "real" phy should get preference, but on the 8139 there 82 * is no phyid register. 83 */ 84 return (5); 85 } 86 87 void 88 rlphyattach(parent, self, aux) 89 struct device *parent, *self; 90 void *aux; 91 { 92 struct mii_softc *sc = (struct mii_softc *)self; 93 struct mii_attach_args *ma = aux; 94 struct mii_data *mii = ma->mii_data; 95 96 printf(": RTL internal phy\n"); 97 98 sc->mii_inst = mii->mii_instance; 99 sc->mii_phy = ma->mii_phyno; 100 sc->mii_service = rlphy_service; 101 sc->mii_status = ukphy_status; 102 sc->mii_pdata = mii; 103 sc->mii_flags = mii->mii_flags; 104 105 rlphy_reset(sc); 106 107 sc->mii_capabilities = 108 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 109 if (sc->mii_capabilities & BMSR_MEDIAMASK) 110 mii_phy_add_media(sc); 111 } 112 113 int 114 rlphy_service(sc, mii, cmd) 115 struct mii_softc *sc; 116 struct mii_data *mii; 117 int cmd; 118 { 119 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 120 121 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 122 return (ENXIO); 123 124 /* 125 * Can't isolate the RTL8139 phy, so it has to be the only one. 126 */ 127 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 128 panic("rlphy_service: attempt to isolate phy"); 129 130 switch (cmd) { 131 case MII_POLLSTAT: 132 break; 133 134 case MII_MEDIACHG: 135 /* 136 * If the interface is not up, don't do anything. 137 */ 138 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 139 break; 140 141 mii_phy_setmedia(sc); 142 break; 143 144 case MII_TICK: 145 if (mii_phy_tick(sc) == EJUSTRETURN) 146 return (0); 147 break; 148 149 case MII_DOWN: 150 mii_phy_down(sc); 151 return (0); 152 } 153 154 /* Update the media status. */ 155 mii_phy_status(sc); 156 157 /* Callback if something changed. */ 158 mii_phy_update(sc, cmd); 159 return (0); 160 } 161 162 void 163 rlphy_reset(sc) 164 struct mii_softc *sc; 165 { 166 int bmcr; 167 168 /* 169 * XXX The RTL8139 doesn't set the BMCR properly 170 * XXX after reset, which breaks autoneg. 171 */ 172 173 bmcr = PHY_READ(sc, MII_BMCR); 174 mii_phy_reset(sc); 175 PHY_WRITE(sc, MII_BMCR, bmcr); 176 } 177