1 /*- 2 * Copyright (c) 2001 Jonathan Lemon 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/sys/dev/mii/inphy.c,v 1.4.2.2 2002/11/08 21:53:49 semenu Exp $ 30 * $DragonFly: src/sys/dev/netif/mii_layer/inphy.c,v 1.3 2003/08/07 21:17:03 dillon Exp $ 31 */ 32 33 /* 34 * driver for Intel 82553 and 82555 PHYs 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/socket.h> 41 #include <sys/bus.h> 42 43 #include <net/if.h> 44 #include <net/if_media.h> 45 46 #include "mii.h" 47 #include "miivar.h" 48 #include "miidevs.h" 49 50 #include "inphyreg.h" 51 52 #include "miibus_if.h" 53 54 static int inphy_probe(device_t dev); 55 static int inphy_attach(device_t dev); 56 static int inphy_detach(device_t dev); 57 58 static device_method_t inphy_methods[] = { 59 /* device interface */ 60 DEVMETHOD(device_probe, inphy_probe), 61 DEVMETHOD(device_attach, inphy_attach), 62 DEVMETHOD(device_detach, inphy_detach), 63 DEVMETHOD(device_shutdown, bus_generic_shutdown), 64 { 0, 0 } 65 }; 66 67 static devclass_t inphy_devclass; 68 69 static driver_t inphy_driver = { 70 "inphy", 71 inphy_methods, 72 sizeof(struct mii_softc) 73 }; 74 75 DRIVER_MODULE(inphy, miibus, inphy_driver, inphy_devclass, 0, 0); 76 77 int inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd); 78 void inphy_status(struct mii_softc *sc); 79 80 81 static int 82 inphy_probe(device_t dev) 83 { 84 struct mii_attach_args *ma; 85 device_t parent; 86 87 ma = device_get_ivars(dev); 88 parent = device_get_parent(device_get_parent(dev)); 89 90 /* Intel 82553 A/B steppings */ 91 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxINTEL && 92 MII_MODEL(ma->mii_id2) == MII_MODEL_xxINTEL_I82553AB) { 93 device_set_desc(dev, MII_STR_xxINTEL_I82553AB); 94 return (0); 95 } 96 97 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_INTEL) { 98 switch (MII_MODEL(ma->mii_id2)) { 99 case MII_MODEL_INTEL_I82555: 100 device_set_desc(dev, MII_STR_INTEL_I82555); 101 return (0); 102 case MII_MODEL_INTEL_I82553C: 103 device_set_desc(dev, MII_STR_INTEL_I82553C); 104 return (0); 105 case MII_MODEL_INTEL_I82562EM: 106 device_set_desc(dev, MII_STR_INTEL_I82562EM); 107 return (0); 108 case MII_MODEL_INTEL_I82562ET: 109 device_set_desc(dev, MII_STR_INTEL_I82562ET); 110 return (0); 111 } 112 } 113 114 return (ENXIO); 115 } 116 117 static int 118 inphy_attach(device_t dev) 119 { 120 struct mii_softc *sc; 121 struct mii_attach_args *ma; 122 struct mii_data *mii; 123 124 sc = device_get_softc(dev); 125 ma = device_get_ivars(dev); 126 sc->mii_dev = device_get_parent(dev); 127 mii = device_get_softc(sc->mii_dev); 128 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 129 130 sc->mii_inst = mii->mii_instance; 131 sc->mii_phy = ma->mii_phyno; 132 sc->mii_service = inphy_service; 133 sc->mii_pdata = mii; 134 mii->mii_instance++; 135 136 #if 0 137 sc->mii_flags |= MIIF_NOISOLATE; 138 #endif 139 140 ifmedia_add(&mii->mii_media, 141 IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 142 BMCR_LOOP|BMCR_S100, NULL); 143 144 mii_phy_reset(sc); 145 146 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 147 device_printf(dev, " "); 148 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 149 printf("no media present"); 150 else 151 mii_add_media(mii, sc->mii_capabilities, sc->mii_inst); 152 printf("\n"); 153 154 MIIBUS_MEDIAINIT(sc->mii_dev); 155 156 return (0); 157 } 158 159 static int 160 inphy_detach(device_t dev) 161 { 162 struct mii_softc *sc; 163 struct mii_data *mii; 164 165 sc = device_get_softc(dev); 166 mii = device_get_softc(device_get_softc(dev)); 167 mii_phy_auto_stop(sc); 168 sc->mii_dev = NULL; 169 LIST_REMOVE(sc, mii_list); 170 171 return (0); 172 } 173 174 int 175 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 176 { 177 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 178 int reg; 179 180 switch (cmd) { 181 case MII_POLLSTAT: 182 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 183 return (0); 184 break; 185 186 case MII_MEDIACHG: 187 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 188 reg = PHY_READ(sc, MII_BMCR); 189 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 190 return (0); 191 } 192 193 /* 194 * If the interface is not up, don't do anything. 195 */ 196 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 197 break; 198 199 switch (IFM_SUBTYPE(ife->ifm_media)) { 200 case IFM_AUTO: 201 /* 202 * If we're already in auto mode, just return. 203 */ 204 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 205 return (0); 206 (void) mii_phy_auto(sc, 0); 207 break; 208 case IFM_100_T4: 209 /* 210 * XXX Not supported as a manual setting right now. 211 */ 212 return (EINVAL); 213 default: 214 /* 215 * BMCR data is stored in the ifmedia entry. 216 */ 217 PHY_WRITE(sc, MII_ANAR, mii_anar(ife->ifm_media)); 218 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 219 } 220 break; 221 222 case MII_TICK: 223 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 224 return (0); 225 226 /* 227 * Is the interface even up? 228 */ 229 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 230 return (0); 231 232 /* 233 * Only used for autonegotiation. 234 */ 235 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 236 return (0); 237 238 /* 239 * check for link. 240 * Read the status register twice; BMSR_LINK is latch-low. 241 */ 242 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 243 if (reg & BMSR_LINK) 244 return (0); 245 246 /* 247 * Only retry autonegotiation every 5 seconds. 248 */ 249 if (++sc->mii_ticks != 5) 250 return (0); 251 252 sc->mii_ticks = 0; 253 mii_phy_reset(sc); 254 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 255 return (0); 256 break; 257 } 258 259 /* Update the media status. */ 260 inphy_status(sc); 261 262 /* Callback if something changed. */ 263 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 264 MIIBUS_STATCHG(sc->mii_dev); 265 sc->mii_active = mii->mii_media_active; 266 } 267 return (0); 268 } 269 270 void 271 inphy_status(struct mii_softc *sc) 272 { 273 struct mii_data *mii = sc->mii_pdata; 274 int bmsr, bmcr, scr; 275 276 mii->mii_media_status = IFM_AVALID; 277 mii->mii_media_active = IFM_ETHER; 278 279 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 280 if (bmsr & BMSR_LINK) 281 mii->mii_media_status |= IFM_ACTIVE; 282 283 bmcr = PHY_READ(sc, MII_BMCR); 284 if (bmcr & BMCR_ISO) { 285 mii->mii_media_active |= IFM_NONE; 286 mii->mii_media_status = 0; 287 return; 288 } 289 290 if (bmcr & BMCR_LOOP) 291 mii->mii_media_active |= IFM_LOOP; 292 293 if (bmcr & BMCR_AUTOEN) { 294 if ((bmsr & BMSR_ACOMP) == 0) { 295 mii->mii_media_active |= IFM_NONE; 296 return; 297 } 298 299 scr = PHY_READ(sc, MII_INPHY_SCR); 300 if (scr & SCR_S100) 301 mii->mii_media_active |= IFM_100_TX; 302 else 303 mii->mii_media_active |= IFM_10_T; 304 if (scr & SCR_FDX) 305 mii->mii_media_active |= IFM_FDX; 306 } else 307 mii->mii_media_active |= mii_media_from_bmcr(bmcr); 308 } 309