acphy.c revision 1.19
1 /* $NetBSD: acphy.c,v 1.19 2006/11/16 21:24:06 christos 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 1.19 2006/11/16 21:24:06 christos 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 static int acphymatch(struct device *, struct cfdata *, void *); 62 static 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 static int acphy_service(struct mii_softc *, struct mii_data *, int); 68 static void acphy_status(struct mii_softc *); 69 70 static const struct mii_phy_funcs acphy_funcs = { 71 acphy_service, acphy_status, mii_phy_reset, 72 }; 73 74 static 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 static int 93 acphymatch(struct device *parent, struct cfdata *match, 94 void *aux) 95 { 96 struct mii_attach_args *ma = aux; 97 98 if (mii_phy_match(ma, acphys) != NULL) 99 return (10); 100 101 return (0); 102 } 103 104 static void 105 acphyattach(struct device *parent, struct device *self, void *aux) 106 { 107 struct mii_softc *sc = device_private(self); 108 struct mii_attach_args *ma = aux; 109 struct mii_data *mii = ma->mii_data; 110 const struct mii_phydesc *mpd; 111 112 mpd = mii_phy_match(ma, acphys); 113 aprint_naive(": Media interface\n"); 114 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 115 116 sc->mii_inst = mii->mii_instance; 117 sc->mii_phy = ma->mii_phyno; 118 sc->mii_funcs = &acphy_funcs; 119 sc->mii_pdata = mii; 120 sc->mii_flags = ma->mii_flags; 121 sc->mii_anegticks = MII_ANEGTICKS; 122 123 PHY_RESET(sc); 124 125 /* 126 * XXX Check MCR_FX_SEL to set MIIF_HAVE_FIBER? 127 */ 128 129 sc->mii_capabilities = 130 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 131 aprint_normal("%s: ", sc->mii_dev.dv_xname); 132 133 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 134 if (sc->mii_flags & MIIF_HAVEFIBER) { 135 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 136 MII_MEDIA_100_TX); 137 aprint_normal("100baseFX, "); 138 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 139 MII_MEDIA_100_TX); 140 aprint_normal("100baseFX-FDX, "); 141 } 142 #undef ADD 143 144 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 145 aprint_error("no media present"); 146 else 147 mii_phy_add_media(sc); 148 aprint_normal("\n"); 149 } 150 151 static int 152 acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 153 { 154 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 155 int reg; 156 157 switch (cmd) { 158 case MII_POLLSTAT: 159 /* 160 * If we're not polling our PHY instance, just return. 161 */ 162 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 163 return (0); 164 break; 165 166 case MII_MEDIACHG: 167 /* 168 * If the media indicates a different PHY instance, 169 * isolate ourselves. 170 */ 171 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 172 reg = PHY_READ(sc, MII_BMCR); 173 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 174 return (0); 175 } 176 177 /* 178 * If the interface is not up, don't do anything. 179 */ 180 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 181 break; 182 183 mii_phy_setmedia(sc); 184 break; 185 186 case MII_TICK: 187 /* 188 * If we're not currently selected, just return. 189 */ 190 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 191 return (0); 192 193 if (mii_phy_tick(sc) == EJUSTRETURN) 194 return (0); 195 break; 196 197 case MII_DOWN: 198 mii_phy_down(sc); 199 return (0); 200 } 201 202 /* Update the media status. */ 203 mii_phy_status(sc); 204 205 /* Callback if something changed. */ 206 mii_phy_update(sc, cmd); 207 return (0); 208 } 209 210 static void 211 acphy_status(struct mii_softc *sc) 212 { 213 struct mii_data *mii = sc->mii_pdata; 214 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 215 int bmsr, bmcr, dr; 216 217 mii->mii_media_status = IFM_AVALID; 218 mii->mii_media_active = IFM_ETHER; 219 220 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 221 dr = PHY_READ(sc, MII_ACPHY_DR); 222 223 if (bmsr & BMSR_LINK) 224 mii->mii_media_status |= IFM_ACTIVE; 225 226 bmcr = PHY_READ(sc, MII_BMCR); 227 if (bmcr & BMCR_ISO) { 228 mii->mii_media_active |= IFM_NONE; 229 mii->mii_media_status = 0; 230 return; 231 } 232 233 if (bmcr & BMCR_LOOP) 234 mii->mii_media_active |= IFM_LOOP; 235 236 if (bmcr & BMCR_AUTOEN) { 237 /* 238 * The media status bits are only valid if autonegotiation 239 * has completed (or it's disabled). 240 */ 241 if ((bmsr & BMSR_ACOMP) == 0) { 242 /* Erg, still trying, I guess... */ 243 mii->mii_media_active |= IFM_NONE; 244 return; 245 } 246 247 if (dr & DR_SPEED) 248 mii->mii_media_active |= IFM_100_TX; 249 else 250 mii->mii_media_active |= IFM_10_T; 251 if (dr & DR_DPLX) 252 mii->mii_media_active |= IFM_FDX; 253 } else 254 mii->mii_media_active = ife->ifm_media; 255 } 256
Indexes created Tue Sep 23 14:10:03 GMT 2025