1 /* $OpenBSD: bmtphy.c,v 1.17 2009/07/25 09:56:24 sthen Exp $ */ 2 /* $NetBSD: bmtphy.c,v 1.17 2005/01/17 13:17:45 scw Exp $ */ 3 4 /*- 5 * Copyright (c) 2001 Theo de Raadt 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /* 30 * Driver for Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also 31 * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in 32 * the 3c905C data sheet. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/device.h> 39 #include <sys/socket.h> 40 #include <sys/errno.h> 41 42 #include <net/if.h> 43 #include <net/if_media.h> 44 45 #include <dev/mii/mii.h> 46 #include <dev/mii/miivar.h> 47 #include <dev/mii/miidevs.h> 48 49 #include <dev/mii/bmtphyreg.h> 50 51 int bmtphymatch(struct device *, void *, void *); 52 void bmtphyattach(struct device *, struct device *, void *); 53 54 struct cfattach bmtphy_ca = { 55 sizeof(struct mii_softc), bmtphymatch, bmtphyattach, mii_phy_detach, 56 mii_phy_activate 57 }; 58 59 struct cfdriver bmtphy_cd = { 60 NULL, "bmtphy", DV_DULL 61 }; 62 63 int bmtphy_service(struct mii_softc *, struct mii_data *, int); 64 void bmtphy_status(struct mii_softc *); 65 void bmtphy_reset(struct mii_softc *); 66 67 const struct mii_phy_funcs bmtphy_funcs = { 68 bmtphy_service, bmtphy_status, bmtphy_reset, 69 }; 70 71 static const struct mii_phydesc bmtphys[] = { 72 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905B, 73 MII_STR_BROADCOM_3C905B }, 74 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905C, 75 MII_STR_BROADCOM_3C905C }, 76 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM4401, 77 MII_STR_BROADCOM_BCM4401 }, 78 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5201, 79 MII_STR_BROADCOM_BCM5201 }, 80 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5214, 81 MII_STR_BROADCOM_BCM5214 }, 82 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5220, 83 MII_STR_BROADCOM_BCM5220 }, 84 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5221, 85 MII_STR_BROADCOM_BCM5221 }, 86 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5222, 87 MII_STR_BROADCOM_BCM5222 }, 88 89 { 0, 0, 90 NULL }, 91 }; 92 93 int 94 bmtphymatch(struct device *parent, void *match, void *aux) 95 { 96 struct mii_attach_args *ma = aux; 97 98 if (mii_phy_match(ma, bmtphys) != NULL) 99 return (10); 100 101 return (0); 102 } 103 104 void 105 bmtphyattach(struct device *parent, struct device *self, void *aux) 106 { 107 struct mii_softc *sc = (struct mii_softc *)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, bmtphys); 113 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 114 115 sc->mii_model = MII_MODEL(ma->mii_id2); 116 sc->mii_inst = mii->mii_instance; 117 sc->mii_phy = ma->mii_phyno; 118 sc->mii_funcs = &bmtphy_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 AUX_STS_FX_MODE to set MIIF_HAVE_FIBER? 127 */ 128 129 sc->mii_capabilities = 130 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 131 if (sc->mii_capabilities & BMSR_MEDIAMASK) 132 mii_phy_add_media(sc); 133 } 134 135 int 136 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 137 { 138 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 139 int reg; 140 141 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 142 return (ENXIO); 143 144 switch (cmd) { 145 case MII_POLLSTAT: 146 /* 147 * If we're not polling our PHY instance, just return. 148 */ 149 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 150 return (0); 151 break; 152 153 case MII_MEDIACHG: 154 /* 155 * If the media indicates a different PHY instance, 156 * isolate ourselves. 157 */ 158 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 159 reg = PHY_READ(sc, MII_BMCR); 160 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 161 return (0); 162 } 163 164 /* 165 * If the interface is not up, don't do anything. 166 */ 167 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 168 break; 169 170 mii_phy_setmedia(sc); 171 break; 172 173 case MII_TICK: 174 /* 175 * If we're not currently selected, just return. 176 */ 177 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 178 return (0); 179 180 if (mii_phy_tick(sc) == EJUSTRETURN) 181 return (0); 182 break; 183 184 case MII_DOWN: 185 mii_phy_down(sc); 186 return (0); 187 } 188 189 /* Update the media status. */ 190 mii_phy_status(sc); 191 192 /* Callback if something changed. */ 193 mii_phy_update(sc, cmd); 194 return (0); 195 } 196 197 void 198 bmtphy_status(struct mii_softc *sc) 199 { 200 struct mii_data *mii = sc->mii_pdata; 201 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 202 int bmsr, bmcr, aux_csr; 203 204 mii->mii_media_status = IFM_AVALID; 205 mii->mii_media_active = IFM_ETHER; 206 207 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 208 if (bmsr & BMSR_LINK) 209 mii->mii_media_status |= IFM_ACTIVE; 210 211 bmcr = PHY_READ(sc, MII_BMCR); 212 if (bmcr & BMCR_ISO) { 213 mii->mii_media_active |= IFM_NONE; 214 mii->mii_media_status = 0; 215 return; 216 } 217 218 if (bmcr & BMCR_LOOP) 219 mii->mii_media_active |= IFM_LOOP; 220 221 if (bmcr & BMCR_AUTOEN) { 222 /* 223 * The later are only valid if autonegotiation 224 * has completed (or it's disabled). 225 */ 226 if ((bmsr & BMSR_ACOMP) == 0) { 227 /* Erg, still trying, I guess... */ 228 mii->mii_media_active |= IFM_NONE; 229 return; 230 } 231 232 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 233 if (aux_csr & AUX_CSR_SPEED) 234 mii->mii_media_active |= IFM_100_TX; 235 else 236 mii->mii_media_active |= IFM_10_T; 237 238 if (aux_csr & AUX_CSR_FDX) 239 mii->mii_media_active |= mii_phy_flowstatus(sc) | IFM_FDX; 240 else 241 mii->mii_media_active |= IFM_HDX; 242 } else 243 mii->mii_media_active = ife->ifm_media; 244 } 245 246 void 247 bmtphy_reset(struct mii_softc *sc) 248 { 249 u_int16_t data; 250 251 mii_phy_reset(sc); 252 253 if (sc->mii_model == MII_MODEL_BROADCOM_BCM5221) { 254 /* Enable shadow register mode */ 255 data = PHY_READ(sc, 0x1f); 256 PHY_WRITE(sc, 0x1f, data | 0x0080); 257 258 /* Enable APD (Auto PowerDetect) */ 259 data = PHY_READ(sc, MII_BMTPHY_AUX2); 260 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 261 262 /* Enable clocks across APD for 263 * Auto-MDIX functionality */ 264 data = PHY_READ(sc, MII_BMTPHY_INTR); 265 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 266 267 /* Disable shadow register mode */ 268 data = PHY_READ(sc, 0x1f); 269 PHY_WRITE(sc, 0x1f, data & ~0x0080); 270 } 271 } 272