1 /* $NetBSD: acphy.c,v 1.12 2003/01/26 06:25:08 matt 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 1.12 2003/01/26 06:25:08 matt 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 { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_AC101L, 78 MII_STR_ALTIMA_AC101L }, 79 { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_Am79C874, 80 MII_STR_ALTIMA_Am79C874 }, 81 { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_Am79C875, 82 MII_STR_ALTIMA_Am79C875 }, 83 84 /* XXX This is reported to work, but it's not from any data sheet. */ 85 { MII_OUI_ALTIMA, MII_MODEL_ALTIMA_ACXXX, 86 MII_STR_ALTIMA_ACXXX }, 87 88 { 0, 0, 89 NULL }, 90 }; 91 92 int 93 acphymatch(struct device *parent, struct cfdata *match, void *aux) 94 { 95 struct mii_attach_args *ma = aux; 96 97 if (mii_phy_match(ma, acphys) != NULL) 98 return (10); 99 100 return (0); 101 } 102 103 void 104 acphyattach(struct device *parent, struct device *self, void *aux) 105 { 106 struct mii_softc *sc = (struct mii_softc *)self; 107 struct mii_attach_args *ma = aux; 108 struct mii_data *mii = ma->mii_data; 109 const struct mii_phydesc *mpd; 110 111 mpd = mii_phy_match(ma, acphys); 112 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 113 114 sc->mii_inst = mii->mii_instance; 115 sc->mii_phy = ma->mii_phyno; 116 sc->mii_funcs = &acphy_funcs; 117 sc->mii_pdata = mii; 118 sc->mii_flags = ma->mii_flags; 119 sc->mii_anegticks = 5; 120 121 PHY_RESET(sc); 122 123 /* 124 * XXX Check MCR_FX_SEL to set MIIF_HAVE_FIBER? 125 */ 126 127 sc->mii_capabilities = 128 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 129 printf("%s: ", sc->mii_dev.dv_xname); 130 131 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 132 if (sc->mii_flags & MIIF_HAVEFIBER) { 133 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 134 MII_MEDIA_100_TX); 135 printf("100baseFX, "); 136 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 137 MII_MEDIA_100_TX); 138 printf("100baseFX-FDX, "); 139 } 140 #undef ADD 141 142 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 143 printf("no media present"); 144 else 145 mii_phy_add_media(sc); 146 printf("\n"); 147 } 148 149 int 150 acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 151 { 152 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 153 int reg; 154 155 switch (cmd) { 156 case MII_POLLSTAT: 157 /* 158 * If we're not polling our PHY instance, just return. 159 */ 160 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 161 return (0); 162 break; 163 164 case MII_MEDIACHG: 165 /* 166 * If the media indicates a different PHY instance, 167 * isolate ourselves. 168 */ 169 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 170 reg = PHY_READ(sc, MII_BMCR); 171 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 172 return (0); 173 } 174 175 /* 176 * If the interface is not up, don't do anything. 177 */ 178 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 179 break; 180 181 mii_phy_setmedia(sc); 182 break; 183 184 case MII_TICK: 185 /* 186 * If we're not currently selected, just return. 187 */ 188 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 189 return (0); 190 191 if (mii_phy_tick(sc) == EJUSTRETURN) 192 return (0); 193 break; 194 195 case MII_DOWN: 196 mii_phy_down(sc); 197 return (0); 198 } 199 200 /* Update the media status. */ 201 mii_phy_status(sc); 202 203 /* Callback if something changed. */ 204 mii_phy_update(sc, cmd); 205 return (0); 206 } 207 208 void 209 acphy_status(struct mii_softc *sc) 210 { 211 struct mii_data *mii = sc->mii_pdata; 212 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 213 int bmsr, bmcr, dr; 214 215 mii->mii_media_status = IFM_AVALID; 216 mii->mii_media_active = IFM_ETHER; 217 218 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 219 dr = PHY_READ(sc, MII_ACPHY_DR); 220 221 if (bmsr & BMSR_LINK) 222 mii->mii_media_status |= IFM_ACTIVE; 223 224 bmcr = PHY_READ(sc, MII_BMCR); 225 if (bmcr & BMCR_ISO) { 226 mii->mii_media_active |= IFM_NONE; 227 mii->mii_media_status = 0; 228 return; 229 } 230 231 if (bmcr & BMCR_LOOP) 232 mii->mii_media_active |= IFM_LOOP; 233 234 if (bmcr & BMCR_AUTOEN) { 235 /* 236 * The media status bits are only valid if autonegotiation 237 * has completed (or it's disabled). 238 */ 239 if ((bmsr & BMSR_ACOMP) == 0) { 240 /* Erg, still trying, I guess... */ 241 mii->mii_media_active |= IFM_NONE; 242 return; 243 } 244 245 if (dr & DR_SPEED) 246 mii->mii_media_active |= IFM_100_TX; 247 else 248 mii->mii_media_active |= IFM_10_T; 249 if (dr & DR_DPLX) 250 mii->mii_media_active |= IFM_FDX; 251 } else 252 mii->mii_media_active = ife->ifm_media; 253 } 254