1 /* $NetBSD: acphy.c,v 1.6 2002/04/17 09:14:21 wiz 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 1.6 2002/04/17 09:14:21 wiz 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 /* XXX This is reported to work, but it's not from any data sheet. */ 82 { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_ACXXX, 83 MII_STR_ALTIMA_ACXXX }, 84 85 { 0, 0, 86 NULL }, 87 }; 88 89 int 90 acphymatch(struct device *parent, struct cfdata *match, void *aux) 91 { 92 struct mii_attach_args *ma = aux; 93 94 if (mii_phy_match(ma, acphys) != NULL) 95 return (10); 96 97 return (0); 98 } 99 100 void 101 acphyattach(struct device *parent, struct device *self, void *aux) 102 { 103 struct mii_softc *sc = (struct mii_softc *)self; 104 struct mii_attach_args *ma = aux; 105 struct mii_data *mii = ma->mii_data; 106 const struct mii_phydesc *mpd; 107 108 mpd = mii_phy_match(ma, acphys); 109 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 110 111 sc->mii_inst = mii->mii_instance; 112 sc->mii_phy = ma->mii_phyno; 113 sc->mii_funcs = &acphy_funcs; 114 sc->mii_pdata = mii; 115 sc->mii_flags = ma->mii_flags; 116 sc->mii_anegticks = 5; 117 118 PHY_RESET(sc); 119 120 /* 121 * XXX Check MCR_FX_SEL to set MIIF_HAVE_FIBER? 122 */ 123 124 sc->mii_capabilities = 125 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 126 printf("%s: ", sc->mii_dev.dv_xname); 127 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 128 printf("no media present"); 129 else 130 mii_phy_add_media(sc); 131 printf("\n"); 132 } 133 134 int 135 acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 136 { 137 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 138 int reg; 139 140 switch (cmd) { 141 case MII_POLLSTAT: 142 /* 143 * If we're not polling our PHY instance, just return. 144 */ 145 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 146 return (0); 147 break; 148 149 case MII_MEDIACHG: 150 /* 151 * If the media indicates a different PHY instance, 152 * isolate ourselves. 153 */ 154 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 155 reg = PHY_READ(sc, MII_BMCR); 156 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 157 return (0); 158 } 159 160 /* 161 * If the interface is not up, don't do anything. 162 */ 163 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 164 break; 165 166 mii_phy_setmedia(sc); 167 break; 168 169 case MII_TICK: 170 /* 171 * If we're not currently selected, just return. 172 */ 173 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 174 return (0); 175 176 if (mii_phy_tick(sc) == EJUSTRETURN) 177 return (0); 178 break; 179 180 case MII_DOWN: 181 mii_phy_down(sc); 182 return (0); 183 } 184 185 /* Update the media status. */ 186 mii_phy_status(sc); 187 188 /* Callback if something changed. */ 189 mii_phy_update(sc, cmd); 190 return (0); 191 } 192 193 void 194 acphy_status(struct mii_softc *sc) 195 { 196 struct mii_data *mii = sc->mii_pdata; 197 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 198 int bmsr, bmcr, dr; 199 200 mii->mii_media_status = IFM_AVALID; 201 mii->mii_media_active = IFM_ETHER; 202 203 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 204 dr = PHY_READ(sc, MII_ACPHY_DR); 205 206 if (bmsr & BMSR_LINK) 207 mii->mii_media_status |= IFM_ACTIVE; 208 209 bmcr = PHY_READ(sc, MII_BMCR); 210 if (bmcr & BMCR_ISO) { 211 mii->mii_media_active |= IFM_NONE; 212 mii->mii_media_status = 0; 213 return; 214 } 215 216 if (bmcr & BMCR_LOOP) 217 mii->mii_media_active |= IFM_LOOP; 218 219 if (bmcr & BMCR_AUTOEN) { 220 /* 221 * The media status bits are only valid if autonegotiation 222 * has completed (or it's disabled). 223 */ 224 if ((bmsr & BMSR_ACOMP) == 0) { 225 /* Erg, still trying, I guess... */ 226 mii->mii_media_active |= IFM_NONE; 227 return; 228 } 229 230 if (dr & DR_SPEED) 231 mii->mii_media_active |= IFM_100_TX; 232 else 233 mii->mii_media_active |= IFM_10_T; 234 if (dr & DR_DPLX) 235 mii->mii_media_active |= IFM_FDX; 236 } else 237 mii->mii_media_active = ife->ifm_media; 238 } 239