1 /* $NetBSD: acphy.c,v 1.10 2002/10/02 16:34:14 thorpej 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 1.10 2002/10/02 16:34:14 thorpej 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 CFATTACH_DECL(acphy, sizeof(struct mii_softc), 65 acphymatch, acphyattach, mii_phy_detach, mii_phy_activate); 66 67 int acphy_service(struct mii_softc *, struct mii_data *, int); 68 void acphy_status(struct mii_softc *); 69 70 const struct mii_phy_funcs acphy_funcs = { 71 acphy_service, acphy_status, mii_phy_reset, 72 }; 73 74 const struct mii_phydesc acphys[] = { 75 { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_AC101, 76 MII_STR_ALTIMA_AC101 }, 77 78 /* XXX This is reported to work, but it's not from any data sheet. */ 79 { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_ACXXX, 80 MII_STR_ALTIMA_ACXXX }, 81 82 { 0, 0, 83 NULL }, 84 }; 85 86 int 87 acphymatch(struct device *parent, struct cfdata *match, void *aux) 88 { 89 struct mii_attach_args *ma = aux; 90 91 if (mii_phy_match(ma, acphys) != NULL) 92 return (10); 93 94 return (0); 95 } 96 97 void 98 acphyattach(struct device *parent, struct device *self, void *aux) 99 { 100 struct mii_softc *sc = (struct mii_softc *)self; 101 struct mii_attach_args *ma = aux; 102 struct mii_data *mii = ma->mii_data; 103 const struct mii_phydesc *mpd; 104 105 mpd = mii_phy_match(ma, acphys); 106 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 107 108 sc->mii_inst = mii->mii_instance; 109 sc->mii_phy = ma->mii_phyno; 110 sc->mii_funcs = &acphy_funcs; 111 sc->mii_pdata = mii; 112 sc->mii_flags = ma->mii_flags; 113 sc->mii_anegticks = 5; 114 115 PHY_RESET(sc); 116 117 /* 118 * XXX Check MCR_FX_SEL to set MIIF_HAVE_FIBER? 119 */ 120 121 sc->mii_capabilities = 122 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 123 printf("%s: ", sc->mii_dev.dv_xname); 124 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 125 printf("no media present"); 126 else 127 mii_phy_add_media(sc); 128 printf("\n"); 129 } 130 131 int 132 acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 133 { 134 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 135 int reg; 136 137 switch (cmd) { 138 case MII_POLLSTAT: 139 /* 140 * If we're not polling our PHY instance, just return. 141 */ 142 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 143 return (0); 144 break; 145 146 case MII_MEDIACHG: 147 /* 148 * If the media indicates a different PHY instance, 149 * isolate ourselves. 150 */ 151 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 152 reg = PHY_READ(sc, MII_BMCR); 153 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 154 return (0); 155 } 156 157 /* 158 * If the interface is not up, don't do anything. 159 */ 160 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 161 break; 162 163 mii_phy_setmedia(sc); 164 break; 165 166 case MII_TICK: 167 /* 168 * If we're not currently selected, just return. 169 */ 170 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 171 return (0); 172 173 if (mii_phy_tick(sc) == EJUSTRETURN) 174 return (0); 175 break; 176 177 case MII_DOWN: 178 mii_phy_down(sc); 179 return (0); 180 } 181 182 /* Update the media status. */ 183 mii_phy_status(sc); 184 185 /* Callback if something changed. */ 186 mii_phy_update(sc, cmd); 187 return (0); 188 } 189 190 void 191 acphy_status(struct mii_softc *sc) 192 { 193 struct mii_data *mii = sc->mii_pdata; 194 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 195 int bmsr, bmcr, dr; 196 197 mii->mii_media_status = IFM_AVALID; 198 mii->mii_media_active = IFM_ETHER; 199 200 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 201 dr = PHY_READ(sc, MII_ACPHY_DR); 202 203 if (bmsr & BMSR_LINK) 204 mii->mii_media_status |= IFM_ACTIVE; 205 206 bmcr = PHY_READ(sc, MII_BMCR); 207 if (bmcr & BMCR_ISO) { 208 mii->mii_media_active |= IFM_NONE; 209 mii->mii_media_status = 0; 210 return; 211 } 212 213 if (bmcr & BMCR_LOOP) 214 mii->mii_media_active |= IFM_LOOP; 215 216 if (bmcr & BMCR_AUTOEN) { 217 /* 218 * The media status bits are only valid if autonegotiation 219 * has completed (or it's disabled). 220 */ 221 if ((bmsr & BMSR_ACOMP) == 0) { 222 /* Erg, still trying, I guess... */ 223 mii->mii_media_active |= IFM_NONE; 224 return; 225 } 226 227 if (dr & DR_SPEED) 228 mii->mii_media_active |= IFM_100_TX; 229 else 230 mii->mii_media_active |= IFM_10_T; 231 if (dr & DR_DPLX) 232 mii->mii_media_active |= IFM_FDX; 233 } else 234 mii->mii_media_active = ife->ifm_media; 235 } 236