1 /* $OpenBSD: bmtphy.c,v 1.18 2013/12/28 03:30:40 deraadt 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 }; 57 58 struct cfdriver bmtphy_cd = { 59 NULL, "bmtphy", DV_DULL 60 }; 61 62 int bmtphy_service(struct mii_softc *, struct mii_data *, int); 63 void bmtphy_status(struct mii_softc *); 64 void bmtphy_reset(struct mii_softc *); 65 66 const struct mii_phy_funcs bmtphy_funcs = { 67 bmtphy_service, bmtphy_status, bmtphy_reset, 68 }; 69 70 static const struct mii_phydesc bmtphys[] = { 71 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905B, 72 MII_STR_BROADCOM_3C905B }, 73 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905C, 74 MII_STR_BROADCOM_3C905C }, 75 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM4401, 76 MII_STR_BROADCOM_BCM4401 }, 77 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5201, 78 MII_STR_BROADCOM_BCM5201 }, 79 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5214, 80 MII_STR_BROADCOM_BCM5214 }, 81 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5220, 82 MII_STR_BROADCOM_BCM5220 }, 83 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5221, 84 MII_STR_BROADCOM_BCM5221 }, 85 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5222, 86 MII_STR_BROADCOM_BCM5222 }, 87 88 { 0, 0, 89 NULL }, 90 }; 91 92 int 93 bmtphymatch(struct device *parent, void *match, void *aux) 94 { 95 struct mii_attach_args *ma = aux; 96 97 if (mii_phy_match(ma, bmtphys) != NULL) 98 return (10); 99 100 return (0); 101 } 102 103 void 104 bmtphyattach(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, bmtphys); 112 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 113 114 sc->mii_model = MII_MODEL(ma->mii_id2); 115 sc->mii_inst = mii->mii_instance; 116 sc->mii_phy = ma->mii_phyno; 117 sc->mii_funcs = &bmtphy_funcs; 118 sc->mii_pdata = mii; 119 sc->mii_flags = ma->mii_flags; 120 sc->mii_anegticks = MII_ANEGTICKS; 121 122 PHY_RESET(sc); 123 124 /* 125 * XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER? 126 */ 127 128 sc->mii_capabilities = 129 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 130 if (sc->mii_capabilities & BMSR_MEDIAMASK) 131 mii_phy_add_media(sc); 132 } 133 134 int 135 bmtphy_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 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 141 return (ENXIO); 142 143 switch (cmd) { 144 case MII_POLLSTAT: 145 /* 146 * If we're not polling our PHY instance, just return. 147 */ 148 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 149 return (0); 150 break; 151 152 case MII_MEDIACHG: 153 /* 154 * If the media indicates a different PHY instance, 155 * isolate ourselves. 156 */ 157 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 158 reg = PHY_READ(sc, MII_BMCR); 159 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 160 return (0); 161 } 162 163 /* 164 * If the interface is not up, don't do anything. 165 */ 166 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 167 break; 168 169 mii_phy_setmedia(sc); 170 break; 171 172 case MII_TICK: 173 /* 174 * If we're not currently selected, just return. 175 */ 176 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 177 return (0); 178 179 if (mii_phy_tick(sc) == EJUSTRETURN) 180 return (0); 181 break; 182 183 case MII_DOWN: 184 mii_phy_down(sc); 185 return (0); 186 } 187 188 /* Update the media status. */ 189 mii_phy_status(sc); 190 191 /* Callback if something changed. */ 192 mii_phy_update(sc, cmd); 193 return (0); 194 } 195 196 void 197 bmtphy_status(struct mii_softc *sc) 198 { 199 struct mii_data *mii = sc->mii_pdata; 200 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 201 int bmsr, bmcr, aux_csr; 202 203 mii->mii_media_status = IFM_AVALID; 204 mii->mii_media_active = IFM_ETHER; 205 206 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 207 if (bmsr & BMSR_LINK) 208 mii->mii_media_status |= IFM_ACTIVE; 209 210 bmcr = PHY_READ(sc, MII_BMCR); 211 if (bmcr & BMCR_ISO) { 212 mii->mii_media_active |= IFM_NONE; 213 mii->mii_media_status = 0; 214 return; 215 } 216 217 if (bmcr & BMCR_LOOP) 218 mii->mii_media_active |= IFM_LOOP; 219 220 if (bmcr & BMCR_AUTOEN) { 221 /* 222 * The later are only valid if autonegotiation 223 * has completed (or it's disabled). 224 */ 225 if ((bmsr & BMSR_ACOMP) == 0) { 226 /* Erg, still trying, I guess... */ 227 mii->mii_media_active |= IFM_NONE; 228 return; 229 } 230 231 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 232 if (aux_csr & AUX_CSR_SPEED) 233 mii->mii_media_active |= IFM_100_TX; 234 else 235 mii->mii_media_active |= IFM_10_T; 236 237 if (aux_csr & AUX_CSR_FDX) 238 mii->mii_media_active |= mii_phy_flowstatus(sc) | IFM_FDX; 239 else 240 mii->mii_media_active |= IFM_HDX; 241 } else 242 mii->mii_media_active = ife->ifm_media; 243 } 244 245 void 246 bmtphy_reset(struct mii_softc *sc) 247 { 248 u_int16_t data; 249 250 mii_phy_reset(sc); 251 252 if (sc->mii_model == MII_MODEL_BROADCOM_BCM5221) { 253 /* Enable shadow register mode */ 254 data = PHY_READ(sc, 0x1f); 255 PHY_WRITE(sc, 0x1f, data | 0x0080); 256 257 /* Enable APD (Auto PowerDetect) */ 258 data = PHY_READ(sc, MII_BMTPHY_AUX2); 259 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 260 261 /* Enable clocks across APD for 262 * Auto-MDIX functionality */ 263 data = PHY_READ(sc, MII_BMTPHY_INTR); 264 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 265 266 /* Disable shadow register mode */ 267 data = PHY_READ(sc, 0x1f); 268 PHY_WRITE(sc, 0x1f, data & ~0x0080); 269 } 270 } 271