1 /* $NetBSD: acphy.c,v 1.3 2001/11/13 07:41:36 lukem 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 1.3 2001/11/13 07:41:36 lukem 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/malloc.h> 50 #include <sys/socket.h> 51 #include <sys/errno.h> 52 53 #include <net/if.h> 54 #include <net/if_media.h> 55 56 #include <dev/mii/mii.h> 57 #include <dev/mii/miivar.h> 58 #include <dev/mii/miidevs.h> 59 60 #include <dev/mii/acphyreg.h> 61 62 int acphymatch(struct device *, struct cfdata *, void *); 63 void acphyattach(struct device *, struct device *, void *); 64 65 struct cfattach acphy_ca = { 66 sizeof(struct mii_softc), acphymatch, acphyattach, 67 mii_phy_detach, mii_phy_activate 68 }; 69 70 int acphy_service(struct mii_softc *, struct mii_data *, int); 71 void acphy_status(struct mii_softc *); 72 73 const struct mii_phy_funcs acphy_funcs = { 74 acphy_service, acphy_status, mii_phy_reset, 75 }; 76 77 const struct mii_phydesc acphys[] = { 78 { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_AC101, 79 MII_STR_ALTIMA_AC101 }, 80 81 { 0, 0, 82 NULL }, 83 }; 84 85 int 86 acphymatch(struct device *parent, struct cfdata *match, void *aux) 87 { 88 struct mii_attach_args *ma = aux; 89 90 if (mii_phy_match(ma, acphys) != NULL) 91 return (10); 92 93 return (0); 94 } 95 96 void 97 acphyattach(struct device *parent, struct device *self, void *aux) 98 { 99 struct mii_softc *sc = (struct mii_softc *)self; 100 struct mii_attach_args *ma = aux; 101 struct mii_data *mii = ma->mii_data; 102 const struct mii_phydesc *mpd; 103 104 mpd = mii_phy_match(ma, acphys); 105 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 106 107 sc->mii_inst = mii->mii_instance; 108 sc->mii_phy = ma->mii_phyno; 109 sc->mii_funcs = &acphy_funcs; 110 sc->mii_pdata = mii; 111 sc->mii_flags = mii->mii_flags; 112 sc->mii_anegticks = 5; 113 114 PHY_RESET(sc); 115 116 /* 117 * XXX Check MCR_FX_SEL to set MIIF_HAVE_FIBER? 118 */ 119 120 sc->mii_capabilities = 121 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 122 printf("%s: ", sc->mii_dev.dv_xname); 123 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 124 printf("no media present"); 125 else 126 mii_phy_add_media(sc); 127 printf("\n"); 128 } 129 130 int 131 acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 132 { 133 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 134 int reg; 135 136 switch (cmd) { 137 case MII_POLLSTAT: 138 /* 139 * If we're not polling our PHY instance, just return. 140 */ 141 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 142 return (0); 143 break; 144 145 case MII_MEDIACHG: 146 /* 147 * If the media indicates a different PHY instance, 148 * isolate ourselves. 149 */ 150 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 151 reg = PHY_READ(sc, MII_BMCR); 152 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 153 return (0); 154 } 155 156 /* 157 * If the interface is not up, don't do anything. 158 */ 159 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 160 break; 161 162 mii_phy_setmedia(sc); 163 break; 164 165 case MII_TICK: 166 /* 167 * If we're not currently selected, just return. 168 */ 169 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 170 return (0); 171 172 if (mii_phy_tick(sc) == EJUSTRETURN) 173 return (0); 174 break; 175 176 case MII_DOWN: 177 mii_phy_down(sc); 178 return (0); 179 } 180 181 /* Update the media status. */ 182 mii_phy_status(sc); 183 184 /* Callback if something changed. */ 185 mii_phy_update(sc, cmd); 186 return (0); 187 } 188 189 void 190 acphy_status(struct mii_softc *sc) 191 { 192 struct mii_data *mii = sc->mii_pdata; 193 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 194 int bmsr, bmcr, dr; 195 196 mii->mii_media_status = IFM_AVALID; 197 mii->mii_media_active = IFM_ETHER; 198 199 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 200 dr = PHY_READ(sc, MII_ACPHY_DR); 201 202 if (bmsr & BMSR_LINK) 203 mii->mii_media_status |= IFM_ACTIVE; 204 205 bmcr = PHY_READ(sc, MII_BMCR); 206 if (bmcr & BMCR_ISO) { 207 mii->mii_media_active |= IFM_NONE; 208 mii->mii_media_status = 0; 209 return; 210 } 211 212 if (bmcr & BMCR_LOOP) 213 mii->mii_media_active |= IFM_LOOP; 214 215 if (bmcr & BMCR_AUTOEN) { 216 /* 217 * The media status bits are only valid of autonegotiation 218 * has completed (or it's disabled). 219 */ 220 if ((bmsr & BMSR_ACOMP) == 0) { 221 /* Erg, still trying, I guess... */ 222 mii->mii_media_active |= IFM_NONE; 223 return; 224 } 225 226 if (dr & DR_SPEED) 227 mii->mii_media_active |= IFM_100_TX; 228 else 229 mii->mii_media_active |= IFM_10_T; 230 if (dr & DR_DPLX) 231 mii->mii_media_active |= IFM_FDX; 232 } else 233 mii->mii_media_active = ife->ifm_media; 234 } 235