bmtphy.c revision 1.36
1 /* $NetBSD: bmtphy.c,v 1.36 2019/11/27 10:19:20 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 1.36 2019/11/27 10:19:20 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_PHY_DESC(xxBROADCOM, 3C905B), 98 MII_PHY_DESC(xxBROADCOM, 3C905C), 99 MII_PHY_DESC(xxBROADCOM, BCM5201), 100 MII_PHY_DESC(xxBROADCOM, BCM5214), 101 MII_PHY_DESC(xxBROADCOM, BCM5221), 102 MII_PHY_DESC(xxBROADCOM, BCM5222), 103 MII_PHY_DESC(xxBROADCOM, BCM4401), 104 MII_PHY_END, 105 }; 106 107 static int 108 bmtphymatch(device_t parent, cfdata_t match, void *aux) 109 { 110 struct mii_attach_args *ma = aux; 111 112 if (mii_phy_match(ma, bmtphys) != NULL) 113 return 10; 114 115 return 0; 116 } 117 118 static void 119 bmtphyattach(device_t parent, device_t self, void *aux) 120 { 121 struct mii_softc *sc = device_private(self); 122 struct mii_attach_args *ma = aux; 123 struct mii_data *mii = ma->mii_data; 124 const struct mii_phydesc *mpd; 125 126 mpd = mii_phy_match(ma, bmtphys); 127 aprint_naive(": Media interface\n"); 128 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 129 130 sc->mii_dev = self; 131 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 132 sc->mii_inst = mii->mii_instance; 133 sc->mii_phy = ma->mii_phyno; 134 sc->mii_funcs = &bmtphy_funcs; 135 sc->mii_pdata = mii; 136 sc->mii_flags = ma->mii_flags; 137 138 PHY_RESET(sc); 139 140 /* XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER? */ 141 142 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 143 sc->mii_capabilities &= ma->mii_capmask; 144 145 mii_phy_add_media(sc); 146 } 147 148 static int 149 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 150 { 151 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 152 uint16_t reg; 153 154 switch (cmd) { 155 case MII_POLLSTAT: 156 /* If we're not polling our PHY instance, just return. */ 157 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 158 return 0; 159 break; 160 161 case MII_MEDIACHG: 162 /* 163 * If the media indicates a different PHY instance, 164 * isolate ourselves. 165 */ 166 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 167 PHY_READ(sc, MII_BMCR, ®); 168 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 169 return 0; 170 } 171 172 /* If the interface is not up, don't do anything. */ 173 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 174 break; 175 176 mii_phy_setmedia(sc); 177 break; 178 179 case MII_TICK: 180 /* If we're not currently selected, just return. */ 181 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 182 return 0; 183 184 if (mii_phy_tick(sc) == EJUSTRETURN) 185 return 0; 186 break; 187 188 case MII_DOWN: 189 mii_phy_down(sc); 190 return 0; 191 } 192 193 /* Update the media status. */ 194 mii_phy_status(sc); 195 196 /* Callback if something changed. */ 197 mii_phy_update(sc, cmd); 198 return 0; 199 } 200 201 static void 202 bmtphy_status(struct mii_softc *sc) 203 { 204 struct mii_data *mii = sc->mii_pdata; 205 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 206 uint16_t bmsr, bmcr, aux_csr; 207 208 mii->mii_media_status = IFM_AVALID; 209 mii->mii_media_active = IFM_ETHER; 210 211 PHY_READ(sc, MII_BMSR, &bmsr); 212 PHY_READ(sc, MII_BMSR, &bmsr); 213 214 if (bmsr & BMSR_LINK) 215 mii->mii_media_status |= IFM_ACTIVE; 216 217 PHY_READ(sc, MII_BMCR, &bmcr); 218 if (bmcr & BMCR_ISO) { 219 mii->mii_media_active |= IFM_NONE; 220 mii->mii_media_status = 0; 221 return; 222 } 223 224 if (bmcr & BMCR_LOOP) 225 mii->mii_media_active |= IFM_LOOP; 226 227 if (bmcr & BMCR_AUTOEN) { 228 /* 229 * The media status bits are only valid if autonegotiation 230 * has completed (or it's disabled). 231 */ 232 if ((bmsr & BMSR_ACOMP) == 0) { 233 /* Erg, still trying, I guess... */ 234 mii->mii_media_active |= IFM_NONE; 235 return; 236 } 237 238 PHY_READ(sc, MII_BMTPHY_AUX_CSR, &aux_csr); 239 if (aux_csr & AUX_CSR_SPEED) 240 mii->mii_media_active |= IFM_100_TX; 241 else 242 mii->mii_media_active |= IFM_10_T; 243 if (aux_csr & AUX_CSR_FDX) 244 mii->mii_media_active |= IFM_FDX; 245 else 246 mii->mii_media_active |= IFM_HDX; 247 248 if (mii->mii_media_active & IFM_FDX) 249 mii->mii_media_active |= mii_phy_flowstatus(sc); 250 } else 251 mii->mii_media_active = ife->ifm_media; 252 } 253 254 static void 255 bmtphy_reset(struct mii_softc *sc) 256 { 257 uint16_t data; 258 259 mii_phy_reset(sc); 260 261 if (sc->mii_mpd_model == MII_MODEL_xxBROADCOM_BCM5221) { 262 /* Enable shadow register mode */ 263 PHY_READ(sc, 0x1f, &data); 264 PHY_WRITE(sc, 0x1f, data | 0x0080); 265 266 /* Enable APD (Auto PowerDetect) */ 267 PHY_READ(sc, MII_BMTPHY_AUX2, &data); 268 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 269 270 /* Enable clocks across APD for Auto-MDIX functionality */ 271 PHY_READ(sc, MII_BMTPHY_INTR, &data); 272 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 273 274 /* Disable shadow register mode */ 275 PHY_READ(sc, 0x1f, &data); 276 PHY_WRITE(sc, 0x1f, data & ~0x0080); 277 } 278 } 279
Indexes created Fri Sep 26 08:10:20 GMT 2025