1 /* $OpenBSD: rlphy.c,v 1.6 2000/08/26 20:04:18 nate 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Jason L. Wright 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 24 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 27 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 29 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Driver for the internal PHY found on RTL8139 based nics, based 36 * on drivers for the 'exphy' (Internal 3Com phys) and 'nsphy' 37 * (National Semiconductor DP83840). 38 */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/device.h> 44 #include <sys/malloc.h> 45 #include <sys/socket.h> 46 #include <sys/errno.h> 47 48 #include <net/if.h> 49 #include <net/if_media.h> 50 51 #include <dev/mii/mii.h> 52 #include <dev/mii/miivar.h> 53 #include <dev/mii/miidevs.h> 54 55 int rlphymatch __P((struct device *, void *, void *)); 56 void rlphyattach __P((struct device *, struct device *, void *)); 57 58 struct cfattach rlphy_ca = { 59 sizeof(struct mii_softc), rlphymatch, rlphyattach, mii_phy_detach, 60 mii_phy_activate 61 }; 62 63 struct cfdriver rlphy_cd = { 64 NULL, "rlphy", DV_DULL 65 }; 66 67 int rlphy_service __P((struct mii_softc *, struct mii_data *, int)); 68 void rlphy_reset __P((struct mii_softc *)); 69 70 int 71 rlphymatch(parent, match, aux) 72 struct device *parent; 73 void *match; 74 void *aux; 75 { 76 struct mii_attach_args *ma = aux; 77 78 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || 79 MII_MODEL(ma->mii_id2) != 0) 80 return (0); 81 82 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "rl") != 0) 83 return (0); 84 85 /* 86 * A "real" phy should get preference, but on the 8139 there 87 * is no phyid register. 88 */ 89 return (5); 90 } 91 92 void 93 rlphyattach(parent, self, aux) 94 struct device *parent, *self; 95 void *aux; 96 { 97 struct mii_softc *sc = (struct mii_softc *)self; 98 struct mii_attach_args *ma = aux; 99 struct mii_data *mii = ma->mii_data; 100 101 printf(": RTL internal phy\n"); 102 103 sc->mii_inst = mii->mii_instance; 104 sc->mii_phy = ma->mii_phyno; 105 sc->mii_service = rlphy_service; 106 sc->mii_status = ukphy_status; 107 sc->mii_pdata = mii; 108 sc->mii_flags = mii->mii_flags; 109 110 rlphy_reset(sc); 111 112 sc->mii_capabilities = 113 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 114 if (sc->mii_capabilities & BMSR_MEDIAMASK) 115 mii_phy_add_media(sc); 116 } 117 118 int 119 rlphy_service(sc, mii, cmd) 120 struct mii_softc *sc; 121 struct mii_data *mii; 122 int cmd; 123 { 124 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 125 126 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 127 return (ENXIO); 128 129 /* 130 * Can't isolate the RTL8139 phy, so it has to be the only one. 131 */ 132 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 133 panic("rlphy_service: attempt to isolate phy"); 134 135 switch (cmd) { 136 case MII_POLLSTAT: 137 break; 138 139 case MII_MEDIACHG: 140 /* 141 * If the interface is not up, don't do anything. 142 */ 143 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 144 break; 145 146 mii_phy_setmedia(sc); 147 break; 148 149 case MII_TICK: 150 if (mii_phy_tick(sc) == EJUSTRETURN) 151 return (0); 152 break; 153 154 case MII_DOWN: 155 mii_phy_down(sc); 156 return (0); 157 } 158 159 /* Update the media status. */ 160 mii_phy_status(sc); 161 162 /* Callback if something changed. */ 163 mii_phy_update(sc, cmd); 164 return (0); 165 } 166 167 void 168 rlphy_reset(sc) 169 struct mii_softc *sc; 170 { 171 int bmcr; 172 173 /* 174 * XXX The RTL8139 doesn't set the BMCR properly 175 * XXX after reset, which breaks autoneg. 176 */ 177 178 bmcr = PHY_READ(sc, MII_BMCR); 179 mii_phy_reset(sc); 180 PHY_WRITE(sc, MII_BMCR, bmcr); 181 } 182