1 /* $OpenBSD: luphy.c,v 1.6 2015/03/14 03:38:48 jsg 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/device.h> 47 #include <sys/socket.h> 48 49 #include <net/if.h> 50 #include <net/if_var.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 }; 63 64 struct cfdriver luphy_cd = { 65 NULL, "luphy", DV_DULL 66 }; 67 68 int luphy_service(struct mii_softc *, struct mii_data *, int); 69 70 const struct mii_phy_funcs luphy_funcs = { 71 luphy_service, ukphy_status, mii_phy_reset, 72 }; 73 74 static const struct mii_phydesc luphys[] = { 75 { MII_OUI_LUCENT, MII_MODEL_LUCENT_LU6612, 76 MII_STR_LUCENT_LU6612 }, 77 78 { 0, 0, 79 NULL }, 80 }; 81 82 int 83 luphymatch(struct device *parent, void *match, void *aux) 84 { 85 struct mii_attach_args *ma = aux; 86 87 if (mii_phy_match(ma, luphys) != NULL) 88 return (10); 89 90 return (0); 91 } 92 93 void 94 luphyattach(struct device *parent, struct device *self, void *aux) 95 { 96 struct mii_softc *sc = (struct mii_softc *)self; 97 struct mii_attach_args *ma = aux; 98 struct mii_data *mii = ma->mii_data; 99 const struct mii_phydesc *mpd; 100 101 mpd = mii_phy_match(ma, luphys); 102 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 103 104 sc->mii_inst = mii->mii_instance; 105 sc->mii_phy = ma->mii_phyno; 106 sc->mii_funcs = &luphy_funcs; 107 sc->mii_pdata = mii; 108 sc->mii_flags = ma->mii_flags; 109 110 sc->mii_flags |= MIIF_NOISOLATE; 111 112 PHY_RESET(sc); 113 114 sc->mii_capabilities = 115 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 116 if (sc->mii_capabilities & BMSR_MEDIAMASK) 117 mii_phy_add_media(sc); 118 } 119 120 int 121 luphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 122 { 123 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 124 125 switch (cmd) { 126 case MII_POLLSTAT: 127 /* 128 * If we're not polling our PHY instance, just return. 129 */ 130 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 131 return (0); 132 break; 133 134 case MII_MEDIACHG: 135 /* 136 * If the media indicates a different PHY instance, 137 * just return. Isolating unused PHYs from the bus 138 * causes at least the MII bus of the HME to wedge. 139 */ 140 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 141 return (0); 142 143 /* 144 * If the interface is not up, don't do anything. 145 */ 146 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 147 break; 148 149 mii_phy_setmedia(sc); 150 break; 151 152 case MII_TICK: 153 /* 154 * If we're not currently selected, just return. 155 */ 156 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 157 return (0); 158 159 if (mii_phy_tick(sc) == EJUSTRETURN) 160 return (0); 161 break; 162 163 case MII_DOWN: 164 mii_phy_down(sc); 165 return (0); 166 } 167 168 /* Update the media status. */ 169 mii_phy_status(sc); 170 171 /* Callback if something changed. */ 172 mii_phy_update(sc, cmd); 173 return (0); 174 } 175