1 /* $NetBSD: acphy.c,v 1.7 2002/07/03 06:25:49 simonb Exp $ */ 2 3 /* 4 * Copyright 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Driver for the Altima AC101 PHY. 40 */ 41 42 #include <sys/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: acphy.c,v 1.7 2002/07/03 06:25:49 simonb Exp $"); 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/device.h> 49 #include <sys/socket.h> 50 #include <sys/errno.h> 51 52 #include <net/if.h> 53 #include <net/if_media.h> 54 55 #include <dev/mii/mii.h> 56 #include <dev/mii/miivar.h> 57 #include <dev/mii/miidevs.h> 58 59 #include <dev/mii/acphyreg.h> 60 61 int acphymatch(struct device *, struct cfdata *, void *); 62 void acphyattach(struct device *, struct device *, void *); 63 64 struct cfattach acphy_ca = { 65 sizeof(struct mii_softc), acphymatch, acphyattach, 66 mii_phy_detach, mii_phy_activate 67 }; 68 69 int acphy_service(struct mii_softc *, struct mii_data *, int); 70 void acphy_status(struct mii_softc *); 71 72 const struct mii_phy_funcs acphy_funcs = { 73 acphy_service, acphy_status, mii_phy_reset, 74 }; 75 76 const struct mii_phydesc acphys[] = { 77 { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_AC101, 78 MII_STR_ALTIMA_AC101 }, 79 80 /* XXX This is reported to work, but it's not from any data sheet. */ 81 { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_ACXXX, 82 MII_STR_ALTIMA_ACXXX }, 83 84 { 0, 0, 85 NULL }, 86 }; 87 88 int 89 acphymatch(struct device *parent, struct cfdata *match, void *aux) 90 { 91 struct mii_attach_args *ma = aux; 92 93 if (mii_phy_match(ma, acphys) != NULL) 94 return (10); 95 96 return (0); 97 } 98 99 void 100 acphyattach(struct device *parent, struct device *self, void *aux) 101 { 102 struct mii_softc *sc = (struct mii_softc *)self; 103 struct mii_attach_args *ma = aux; 104 struct mii_data *mii = ma->mii_data; 105 const struct mii_phydesc *mpd; 106 107 mpd = mii_phy_match(ma, acphys); 108 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 109 110 sc->mii_inst = mii->mii_instance; 111 sc->mii_phy = ma->mii_phyno; 112 sc->mii_funcs = &acphy_funcs; 113 sc->mii_pdata = mii; 114 sc->mii_flags = ma->mii_flags; 115 sc->mii_anegticks = 5; 116 117 PHY_RESET(sc); 118 119 /* 120 * XXX Check MCR_FX_SEL to set MIIF_HAVE_FIBER? 121 */ 122 123 sc->mii_capabilities = 124 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 125 printf("%s: ", sc->mii_dev.dv_xname); 126 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 127 printf("no media present"); 128 else 129 mii_phy_add_media(sc); 130 printf("\n"); 131 } 132 133 int 134 acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 135 { 136 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 137 int reg; 138 139 switch (cmd) { 140 case MII_POLLSTAT: 141 /* 142 * If we're not polling our PHY instance, just return. 143 */ 144 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 145 return (0); 146 break; 147 148 case MII_MEDIACHG: 149 /* 150 * If the media indicates a different PHY instance, 151 * isolate ourselves. 152 */ 153 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 154 reg = PHY_READ(sc, MII_BMCR); 155 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 156 return (0); 157 } 158 159 /* 160 * If the interface is not up, don't do anything. 161 */ 162 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 163 break; 164 165 mii_phy_setmedia(sc); 166 break; 167 168 case MII_TICK: 169 /* 170 * If we're not currently selected, just return. 171 */ 172 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 173 return (0); 174 175 if (mii_phy_tick(sc) == EJUSTRETURN) 176 return (0); 177 break; 178 179 case MII_DOWN: 180 mii_phy_down(sc); 181 return (0); 182 } 183 184 /* Update the media status. */ 185 mii_phy_status(sc); 186 187 /* Callback if something changed. */ 188 mii_phy_update(sc, cmd); 189 return (0); 190 } 191 192 void 193 acphy_status(struct mii_softc *sc) 194 { 195 struct mii_data *mii = sc->mii_pdata; 196 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 197 int bmsr, bmcr, dr; 198 199 mii->mii_media_status = IFM_AVALID; 200 mii->mii_media_active = IFM_ETHER; 201 202 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 203 dr = PHY_READ(sc, MII_ACPHY_DR); 204 205 if (bmsr & BMSR_LINK) 206 mii->mii_media_status |= IFM_ACTIVE; 207 208 bmcr = PHY_READ(sc, MII_BMCR); 209 if (bmcr & BMCR_ISO) { 210 mii->mii_media_active |= IFM_NONE; 211 mii->mii_media_status = 0; 212 return; 213 } 214 215 if (bmcr & BMCR_LOOP) 216 mii->mii_media_active |= IFM_LOOP; 217 218 if (bmcr & BMCR_AUTOEN) { 219 /* 220 * The media status bits are only valid if autonegotiation 221 * has completed (or it's disabled). 222 */ 223 if ((bmsr & BMSR_ACOMP) == 0) { 224 /* Erg, still trying, I guess... */ 225 mii->mii_media_active |= IFM_NONE; 226 return; 227 } 228 229 if (dr & DR_SPEED) 230 mii->mii_media_active |= IFM_100_TX; 231 else 232 mii->mii_media_active |= IFM_10_T; 233 if (dr & DR_DPLX) 234 mii->mii_media_active |= IFM_FDX; 235 } else 236 mii->mii_media_active = ife->ifm_media; 237 } 238