acphy.c revision 105135
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 105135 2002-10-14 22:31:52Z alfred $"; 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 122acphy_probe(dev) 123 device_t dev; 124{ 125 struct mii_attach_args *ma; 126 127 ma = device_get_ivars(dev); 128 129 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxALTIMA && 130 MII_MODEL(ma->mii_id2) == MII_MODEL_xxALTIMA_AC101) { 131 device_set_desc(dev, MII_STR_xxALTIMA_AC101); 132 } else 133 return (ENXIO); 134 135 return (0); 136} 137 138static int 139acphy_attach(dev) 140 device_t dev; 141{ 142 struct mii_softc *sc; 143 struct mii_attach_args *ma; 144 struct mii_data *mii; 145 146 sc = device_get_softc(dev); 147 ma = device_get_ivars(dev); 148 sc->mii_dev = device_get_parent(dev); 149 mii = device_get_softc(sc->mii_dev); 150 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 151 152 sc->mii_inst = mii->mii_instance; 153 sc->mii_phy = ma->mii_phyno; 154 sc->mii_service = acphy_service; 155 sc->mii_pdata = mii; 156 sc->mii_flags |= MIIF_NOISOLATE; 157 158 acphy_reset(sc); 159 160 mii->mii_instance++; 161 162 sc->mii_capabilities = 163 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 164 device_printf(dev, " "); 165 mii_add_media(sc); 166 printf("\n"); 167 168 MIIBUS_MEDIAINIT(sc->mii_dev); 169 return (0); 170} 171 172static int 173acphy_service(sc, mii, cmd) 174 struct mii_softc *sc; 175 struct mii_data *mii; 176 int cmd; 177{ 178 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 179 int reg; 180 181 /* 182 * If we're not selected, then do nothing, just isolate and power 183 * down, if changing media. 184 */ 185 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 186 if (cmd == MII_MEDIACHG) { 187 reg = PHY_READ(sc, MII_BMCR); 188 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO | BMCR_PDOWN); 189 } 190 191 return (0); 192 } 193 194 switch (cmd) { 195 case MII_POLLSTAT: 196 break; 197 198 case MII_MEDIACHG: 199 /* 200 * If the interface is not up, don't do anything. 201 */ 202 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 203 break; 204 205 /* Wake & deisolate up if necessary */ 206 reg = PHY_READ(sc, MII_BMCR); 207 if (reg & (BMCR_ISO | BMCR_PDOWN)) 208 PHY_WRITE(sc, MII_BMCR, reg & ~(BMCR_ISO | BMCR_PDOWN)); 209 210 switch (IFM_SUBTYPE(ife->ifm_media)) { 211 case IFM_AUTO: 212 /* 213 * If we're already in auto mode, just return. 214 */ 215 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 216 return (0); 217 218 (void) mii_phy_auto(sc); 219 break; 220 221 default: 222 /* 223 * BMCR data is stored in the ifmedia entry. 224 */ 225 PHY_WRITE(sc, MII_ANAR, 226 mii_anar(ife->ifm_media)); 227 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 228 } 229 break; 230 231 case MII_TICK: 232 /* 233 * Is the interface even up? 234 */ 235 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 236 return (0); 237 238 /* 239 * Only used for autonegotiation. 240 */ 241 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 242 break; 243 244 /* 245 * This PHY's autonegotiation doesn't need to be kicked. 246 */ 247 break; 248 } 249 250 /* Update the media status. */ 251 acphy_status(sc); 252 253 /* Callback if something changed. */ 254 mii_phy_update(sc, cmd); 255 return (0); 256} 257 258static void 259acphy_status(sc) 260 struct mii_softc *sc; 261{ 262 struct mii_data *mii = sc->mii_pdata; 263 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 264 int bmsr, bmcr, diag; 265 266 mii->mii_media_status = IFM_AVALID; 267 mii->mii_media_active = IFM_ETHER; 268 269 bmsr = PHY_READ(sc, MII_BMSR) | 270 PHY_READ(sc, MII_BMSR); 271 if (bmsr & BMSR_LINK) 272 mii->mii_media_status |= IFM_ACTIVE; 273 274 bmcr = PHY_READ(sc, MII_BMCR); 275 if (bmcr & BMCR_ISO) { 276 mii->mii_media_active |= IFM_NONE; 277 mii->mii_media_status = 0; 278 return; 279 } 280 281 if (bmcr & BMCR_LOOP) 282 mii->mii_media_active |= IFM_LOOP; 283 284 if (bmcr & BMCR_AUTOEN) { 285 if ((bmsr & BMSR_ACOMP) == 0) { 286 /* Erg, still trying, I guess... */ 287 mii->mii_media_active |= IFM_NONE; 288 return; 289 } 290 diag = PHY_READ(sc, MII_ACPHY_DIAG); 291 if (diag & AC_DIAG_SPEED) 292 mii->mii_media_active |= IFM_100_TX; 293 else 294 mii->mii_media_active |= IFM_10_T; 295 296 if (diag & AC_DIAG_DUPLEX) 297 mii->mii_media_active |= IFM_FDX; 298 } else 299 mii->mii_media_active = ife->ifm_media; 300} 301 302static void 303acphy_reset(sc) 304 struct mii_softc *sc; 305{ 306 307 mii_phy_reset(sc); 308 PHY_WRITE(sc, MII_ACPHY_INT, 0); 309} 310