1 /* $OpenBSD: luphy.c,v 1.3 2005/04/15 00:44:39 brad Exp $ */ 2 3 /*- 4 * Copyright (c) 2004 Marius Strobl 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 AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /* 30 * Driver for the Lucent Technologies LU6612 Ethernet 10/100 PHY, which 31 * is pin-compatible to the Quality Semiconductor QS6612 but uses a 32 * different register layout. Sun Microsystems uses the LU6612 together 33 * with their HME chip on a couple of bords originally designed for the 34 * QS6612. At least on these boards none of the LU6612 must be isolated 35 * otherwise the MII bus wedges and the other one (there can be a maximum 36 * of two PHYs connected to the HME) no longer can communicate with the 37 * HME (powering down the unused PHY etc. also doesn't help). This is 38 * why we can't use the ukphy driver for the LU6612. 39 * The datasheet for the LU6612 is no longer available on lucent.com or 40 * www.agere.com (former Lucent Microelectronics Group) but you still 41 * should be able to find it when searching for DS00355.pdf or LU6612.pdf. 42 */ 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/device.h> 48 #include <sys/socket.h> 49 50 #include <net/if.h> 51 #include <net/if_media.h> 52 53 #include <dev/mii/mii.h> 54 #include <dev/mii/miivar.h> 55 #include <dev/mii/miidevs.h> 56 57 int luphymatch(struct device *, void *, void *); 58 void luphyattach(struct device *, struct device *, void *); 59 60 struct cfattach luphy_ca = { 61 sizeof(struct mii_softc), luphymatch, luphyattach, mii_phy_detach, 62 mii_phy_activate 63 }; 64 65 struct cfdriver luphy_cd = { 66 NULL, "luphy", DV_DULL 67 }; 68 69 int luphy_service(struct mii_softc *, struct mii_data *, int); 70 71 const struct mii_phy_funcs luphy_funcs = { 72 luphy_service, ukphy_status, mii_phy_reset, 73 }; 74 75 static const struct mii_phydesc luphys[] = { 76 { MII_OUI_LUCENT, MII_MODEL_LUCENT_LU6612, 77 MII_STR_LUCENT_LU6612 }, 78 79 { 0, 0, 80 NULL }, 81 }; 82 83 int 84 luphymatch(struct device *parent, void *match, void *aux) 85 { 86 struct mii_attach_args *ma = aux; 87 88 if (mii_phy_match(ma, luphys) != NULL) 89 return (10); 90 91 return (0); 92 } 93 94 void 95 luphyattach(struct device *parent, struct device *self, 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 const struct mii_phydesc *mpd; 101 102 mpd = mii_phy_match(ma, luphys); 103 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 104 105 sc->mii_inst = mii->mii_instance; 106 sc->mii_phy = ma->mii_phyno; 107 sc->mii_funcs = &luphy_funcs; 108 sc->mii_pdata = mii; 109 sc->mii_flags = ma->mii_flags; 110 111 sc->mii_flags |= MIIF_NOISOLATE; 112 113 PHY_RESET(sc); 114 115 sc->mii_capabilities = 116 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 117 if (sc->mii_capabilities & BMSR_MEDIAMASK) 118 mii_phy_add_media(sc); 119 } 120 121 int 122 luphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 123 { 124 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 125 126 switch (cmd) { 127 case MII_POLLSTAT: 128 /* 129 * If we're not polling our PHY instance, just return. 130 */ 131 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 132 return (0); 133 break; 134 135 case MII_MEDIACHG: 136 /* 137 * If the media indicates a different PHY instance, 138 * just return. Isolating unused PHYs from the bus 139 * causes at least the MII bus of the HME to wedge. 140 */ 141 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 142 return (0); 143 144 /* 145 * If the interface is not up, don't do anything. 146 */ 147 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 148 break; 149 150 mii_phy_setmedia(sc); 151 break; 152 153 case MII_TICK: 154 /* 155 * If we're not currently selected, just return. 156 */ 157 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 158 return (0); 159 160 if (mii_phy_tick(sc) == EJUSTRETURN) 161 return (0); 162 break; 163 164 case MII_DOWN: 165 mii_phy_down(sc); 166 return (0); 167 } 168 169 /* Update the media status. */ 170 mii_phy_status(sc); 171 172 /* Callback if something changed. */ 173 mii_phy_update(sc, cmd); 174 return (0); 175 } 176