bmtphy.c revision 1.33
1 /* $NetBSD: bmtphy.c,v 1.33 2019/01/22 03:42:27 msaitoh Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 /* 58 * Driver for the Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also 59 * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in 60 * the 3c905C data sheet. 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: bmtphy.c,v 1.33 2019/01/22 03:42:27 msaitoh Exp $"); 65 66 #include <sys/param.h> 67 #include <sys/systm.h> 68 #include <sys/kernel.h> 69 #include <sys/device.h> 70 #include <sys/socket.h> 71 #include <sys/errno.h> 72 73 #include <net/if.h> 74 #include <net/if_media.h> 75 76 #include <dev/mii/mii.h> 77 #include <dev/mii/miivar.h> 78 #include <dev/mii/miidevs.h> 79 80 #include <dev/mii/bmtphyreg.h> 81 82 static int bmtphymatch(device_t, cfdata_t, void *); 83 static void bmtphyattach(device_t, device_t, void *); 84 85 CFATTACH_DECL_NEW(bmtphy, sizeof(struct mii_softc), 86 bmtphymatch, bmtphyattach, mii_phy_detach, mii_phy_activate); 87 88 static int bmtphy_service(struct mii_softc *, struct mii_data *, int); 89 static void bmtphy_status(struct mii_softc *); 90 static void bmtphy_reset(struct mii_softc *); 91 92 static const struct mii_phy_funcs bmtphy_funcs = { 93 bmtphy_service, bmtphy_status, bmtphy_reset, 94 }; 95 96 static const struct mii_phydesc bmtphys[] = { 97 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_3C905B, 98 MII_STR_xxBROADCOM_3C905B }, 99 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_3C905C, 100 MII_STR_xxBROADCOM_3C905C }, 101 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5201, 102 MII_STR_xxBROADCOM_BCM5201 }, 103 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5214, 104 MII_STR_xxBROADCOM_BCM5214 }, 105 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5221, 106 MII_STR_xxBROADCOM_BCM5221 }, 107 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM5222, 108 MII_STR_xxBROADCOM_BCM5222 }, 109 { MII_OUI_xxBROADCOM, MII_MODEL_xxBROADCOM_BCM4401, 110 MII_STR_xxBROADCOM_BCM4401 }, 111 112 { 0, 0, 113 NULL }, 114 }; 115 116 static int 117 bmtphymatch(device_t parent, cfdata_t match, void *aux) 118 { 119 struct mii_attach_args *ma = aux; 120 121 if (mii_phy_match(ma, bmtphys) != NULL) 122 return (10); 123 124 return (0); 125 } 126 127 static void 128 bmtphyattach(device_t parent, device_t self, void *aux) 129 { 130 struct mii_softc *sc = device_private(self); 131 struct mii_attach_args *ma = aux; 132 struct mii_data *mii = ma->mii_data; 133 const struct mii_phydesc *mpd; 134 135 mpd = mii_phy_match(ma, bmtphys); 136 aprint_naive(": Media interface\n"); 137 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 138 139 sc->mii_dev = self; 140 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 141 sc->mii_inst = mii->mii_instance; 142 sc->mii_phy = ma->mii_phyno; 143 sc->mii_funcs = &bmtphy_funcs; 144 sc->mii_pdata = mii; 145 sc->mii_flags = ma->mii_flags; 146 sc->mii_anegticks = MII_ANEGTICKS; 147 148 PHY_RESET(sc); 149 150 /* 151 * XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER? 152 */ 153 154 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 155 sc->mii_capabilities &= ma->mii_capmask; 156 aprint_normal_dev(self, ""); 157 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 158 aprint_error("no media present"); 159 else 160 mii_phy_add_media(sc); 161 aprint_normal("\n"); 162 } 163 164 static int 165 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 166 { 167 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 168 uint16_t reg; 169 170 switch (cmd) { 171 case MII_POLLSTAT: 172 /* 173 * If we're not polling our PHY instance, just return. 174 */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 176 return (0); 177 break; 178 179 case MII_MEDIACHG: 180 /* 181 * If the media indicates a different PHY instance, 182 * isolate ourselves. 183 */ 184 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 185 PHY_READ(sc, MII_BMCR, ®); 186 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 187 return (0); 188 } 189 190 /* 191 * If the interface is not up, don't do anything. 192 */ 193 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 194 break; 195 196 mii_phy_setmedia(sc); 197 break; 198 199 case MII_TICK: 200 /* 201 * If we're not currently selected, just return. 202 */ 203 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 204 return (0); 205 206 if (mii_phy_tick(sc) == EJUSTRETURN) 207 return (0); 208 break; 209 210 case MII_DOWN: 211 mii_phy_down(sc); 212 return (0); 213 } 214 215 /* Update the media status. */ 216 mii_phy_status(sc); 217 218 /* Callback if something changed. */ 219 mii_phy_update(sc, cmd); 220 return (0); 221 } 222 223 static void 224 bmtphy_status(struct mii_softc *sc) 225 { 226 struct mii_data *mii = sc->mii_pdata; 227 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 228 uint16_t bmsr, bmcr, aux_csr; 229 230 mii->mii_media_status = IFM_AVALID; 231 mii->mii_media_active = IFM_ETHER; 232 233 PHY_READ(sc, MII_BMSR, &bmsr); 234 PHY_READ(sc, MII_BMSR, &bmsr); 235 236 if (bmsr & BMSR_LINK) 237 mii->mii_media_status |= IFM_ACTIVE; 238 239 PHY_READ(sc, MII_BMCR, &bmcr); 240 if (bmcr & BMCR_ISO) { 241 mii->mii_media_active |= IFM_NONE; 242 mii->mii_media_status = 0; 243 return; 244 } 245 246 if (bmcr & BMCR_LOOP) 247 mii->mii_media_active |= IFM_LOOP; 248 249 if (bmcr & BMCR_AUTOEN) { 250 /* 251 * The media status bits are only valid if autonegotiation 252 * has completed (or it's disabled). 253 */ 254 if ((bmsr & BMSR_ACOMP) == 0) { 255 /* Erg, still trying, I guess... */ 256 mii->mii_media_active |= IFM_NONE; 257 return; 258 } 259 260 PHY_READ(sc, MII_BMTPHY_AUX_CSR, &aux_csr); 261 if (aux_csr & AUX_CSR_SPEED) 262 mii->mii_media_active |= IFM_100_TX; 263 else 264 mii->mii_media_active |= IFM_10_T; 265 if (aux_csr & AUX_CSR_FDX) 266 mii->mii_media_active |= IFM_FDX; 267 else 268 mii->mii_media_active |= IFM_HDX; 269 270 if (mii->mii_media_active & IFM_FDX) 271 mii->mii_media_active |= mii_phy_flowstatus(sc); 272 } else 273 mii->mii_media_active = ife->ifm_media; 274 } 275 276 static void 277 bmtphy_reset(struct mii_softc *sc) 278 { 279 uint16_t data; 280 281 mii_phy_reset(sc); 282 283 if (sc->mii_mpd_model == MII_MODEL_xxBROADCOM_BCM5221) { 284 /* Enable shadow register mode */ 285 PHY_READ(sc, 0x1f, &data); 286 PHY_WRITE(sc, 0x1f, data | 0x0080); 287 288 /* Enable APD (Auto PowerDetect) */ 289 PHY_READ(sc, MII_BMTPHY_AUX2, &data); 290 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 291 292 /* Enable clocks across APD for Auto-MDIX functionality */ 293 PHY_READ(sc, MII_BMTPHY_INTR, &data); 294 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 295 296 /* Disable shadow register mode */ 297 PHY_READ(sc, 0x1f, &data); 298 PHY_WRITE(sc, 0x1f, data & ~0x0080); 299 } 300 } 301
Indexes created Fri Sep 26 20:09:58 GMT 2025