acphy.c revision 95877
1/*- 2 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 7 * NASA Ames Research Center. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the NetBSD 20 * Foundation, Inc. and its contributors. 21 * 4. Neither the name of The NetBSD Foundation nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/* 39 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by Manuel Bouyer. 52 * 4. The name of the author may not be used to endorse or promote products 53 * derived from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 56 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 57 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 58 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 59 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 60 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 64 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 65 */ 66 67/* 68 * Driver for Altima AC101 10/100 PHY 69 */ 70 71#include <sys/param.h> 72#include <sys/systm.h> 73#include <sys/kernel.h> 74#include <sys/socket.h> 75#include <sys/errno.h> 76#include <sys/module.h> 77#include <sys/bus.h> 78 79#include <net/if.h> 80#include <net/if_media.h> 81 82#include <dev/mii/mii.h> 83#include <dev/mii/miivar.h> 84#include <dev/mii/miidevs.h> 85 86#include <dev/mii/acphyreg.h> 87 88#include "miibus_if.h" 89 90#if !defined(lint) 91static const char rcsid[] = 92 "$FreeBSD: head/sys/dev/mii/acphy.c 95877 2002-05-01 19:15:54Z semenu $"; 93#endif 94 95static int acphy_probe (device_t); 96static int acphy_attach (device_t); 97 98static device_method_t acphy_methods[] = { 99 /* device interface */ 100 DEVMETHOD(device_probe, acphy_probe), 101 DEVMETHOD(device_attach, acphy_attach), 102 DEVMETHOD(device_detach, mii_phy_detach), 103 DEVMETHOD(device_shutdown, bus_generic_shutdown), 104 { 0, 0 } 105}; 106 107static devclass_t acphy_devclass; 108 109static driver_t acphy_driver = { 110 "acphy", 111 acphy_methods, 112 sizeof(struct mii_softc) 113}; 114 115DRIVER_MODULE(acphy, miibus, acphy_driver, acphy_devclass, 0, 0); 116 117static int acphy_service(struct mii_softc *, struct mii_data *, int); 118static void acphy_reset(struct mii_softc *); 119static void acphy_status(struct mii_softc *); 120 121static int acphy_probe(dev) 122 device_t dev; 123{ 124 struct mii_attach_args *ma; 125 126 ma = device_get_ivars(dev); 127 128 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxALTIMA && 129 MII_MODEL(ma->mii_id2) == MII_MODEL_xxALTIMA_AC101) { 130 device_set_desc(dev, MII_STR_xxALTIMA_AC101); 131 } else 132 return (ENXIO); 133 134 return (0); 135} 136 137static int acphy_attach(dev) 138 device_t dev; 139{ 140 struct mii_softc *sc; 141 struct mii_attach_args *ma; 142 struct mii_data *mii; 143 144 sc = device_get_softc(dev); 145 ma = device_get_ivars(dev); 146 sc->mii_dev = device_get_parent(dev); 147 mii = device_get_softc(sc->mii_dev); 148 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 149 150 sc->mii_inst = mii->mii_instance; 151 sc->mii_phy = ma->mii_phyno; 152 sc->mii_service = acphy_service; 153 sc->mii_pdata = mii; 154 sc->mii_flags |= MIIF_NOISOLATE; 155 156 acphy_reset(sc); 157 158 mii->mii_instance++; 159 160 sc->mii_capabilities = 161 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 162 device_printf(dev, " "); 163 mii_add_media(sc); 164 printf("\n"); 165 166 MIIBUS_MEDIAINIT(sc->mii_dev); 167 return (0); 168} 169 170static int 171acphy_service(sc, mii, cmd) 172 struct mii_softc *sc; 173 struct mii_data *mii; 174 int cmd; 175{ 176 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 177 int reg; 178 179 /* 180 * If we're not selected, then do nothing, just isolate and power 181 * down, if changing media. 182 */ 183 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 184 if (cmd == MII_MEDIACHG) { 185 reg = PHY_READ(sc, MII_BMCR); 186 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO | BMCR_PDOWN); 187 } 188 189 return (0); 190 } 191 192 switch (cmd) { 193 case MII_POLLSTAT: 194 break; 195 196 case MII_MEDIACHG: 197 /* 198 * If the interface is not up, don't do anything. 199 */ 200 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 201 break; 202 203 /* Wake & deisolate up if necessary */ 204 reg = PHY_READ(sc, MII_BMCR); 205 if (reg & (BMCR_ISO | BMCR_PDOWN)) 206 PHY_WRITE(sc, MII_BMCR, reg & ~(BMCR_ISO | BMCR_PDOWN)); 207 208 switch (IFM_SUBTYPE(ife->ifm_media)) { 209 case IFM_AUTO: 210 /* 211 * If we're already in auto mode, just return. 212 */ 213 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 214 return (0); 215 216 (void) mii_phy_auto(sc, 1); 217 break; 218 219 default: 220 /* 221 * BMCR data is stored in the ifmedia entry. 222 */ 223 PHY_WRITE(sc, MII_ANAR, 224 mii_anar(ife->ifm_media)); 225 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 226 } 227 break; 228 229 case MII_TICK: 230 /* 231 * Is the interface even up? 232 */ 233 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 234 return (0); 235 236 /* 237 * Only used for autonegotiation. 238 */ 239 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 240 break; 241 242 /* 243 * This PHY's autonegotiation doesn't need to be kicked. 244 */ 245 break; 246 } 247 248 /* Update the media status. */ 249 acphy_status(sc); 250 251 /* Callback if something changed. */ 252 mii_phy_update(sc, cmd); 253 return (0); 254} 255 256static void 257acphy_status(sc) 258 struct mii_softc *sc; 259{ 260 struct mii_data *mii = sc->mii_pdata; 261 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 262 int bmsr, bmcr, diag; 263 264 mii->mii_media_status = IFM_AVALID; 265 mii->mii_media_active = IFM_ETHER; 266 267 bmsr = PHY_READ(sc, MII_BMSR) | 268 PHY_READ(sc, MII_BMSR); 269 if (bmsr & BMSR_LINK) 270 mii->mii_media_status |= IFM_ACTIVE; 271 272 bmcr = PHY_READ(sc, MII_BMCR); 273 if (bmcr & BMCR_ISO) { 274 mii->mii_media_active |= IFM_NONE; 275 mii->mii_media_status = 0; 276 return; 277 } 278 279 if (bmcr & BMCR_LOOP) 280 mii->mii_media_active |= IFM_LOOP; 281 282 if (bmcr & BMCR_AUTOEN) { 283 if ((bmsr & BMSR_ACOMP) == 0) { 284 /* Erg, still trying, I guess... */ 285 mii->mii_media_active |= IFM_NONE; 286 return; 287 } 288 diag = PHY_READ(sc, MII_ACPHY_DIAG); 289 if (diag & AC_DIAG_SPEED) 290 mii->mii_media_active |= IFM_100_TX; 291 else 292 mii->mii_media_active |= IFM_10_T; 293 294 if (diag & AC_DIAG_DUPLEX) 295 mii->mii_media_active |= IFM_FDX; 296 } else 297 mii->mii_media_active = ife->ifm_media; 298} 299 300static void 301acphy_reset(sc) 302 struct mii_softc *sc; 303{ 304 305 mii_phy_reset(sc); 306 PHY_WRITE(sc, MII_ACPHY_INT, 0); 307} 308