xmphy.c revision 213229
1/*- 2 * Copyright (c) 2000 3 * Bill Paul <wpaul@ee.columbia.edu>. 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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 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 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: head/sys/dev/mii/xmphy.c 213229 2010-09-27 20:31:03Z marius $"); 35 36/* 37 * driver for the XaQti XMAC II's internal PHY. This is sort of 38 * like a 10/100 PHY, except the only thing we're really autoselecting 39 * here is full/half duplex. Speed is always 1000mbps. 40 */ 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/kernel.h> 45#include <sys/module.h> 46#include <sys/socket.h> 47#include <sys/bus.h> 48 49#include <net/if.h> 50#include <net/if_media.h> 51 52#include <dev/mii/mii.h> 53#include <dev/mii/miivar.h> 54#include "miidevs.h" 55 56#include <dev/mii/xmphyreg.h> 57 58#include "miibus_if.h" 59 60static int xmphy_probe(device_t); 61static int xmphy_attach(device_t); 62 63static device_method_t xmphy_methods[] = { 64 /* device interface */ 65 DEVMETHOD(device_probe, xmphy_probe), 66 DEVMETHOD(device_attach, xmphy_attach), 67 DEVMETHOD(device_detach, mii_phy_detach), 68 DEVMETHOD(device_shutdown, bus_generic_shutdown), 69 { 0, 0 } 70}; 71 72static devclass_t xmphy_devclass; 73 74static driver_t xmphy_driver = { 75 "xmphy", 76 xmphy_methods, 77 sizeof(struct mii_softc) 78}; 79 80DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0); 81 82static int xmphy_service(struct mii_softc *, struct mii_data *, int); 83static void xmphy_status(struct mii_softc *); 84static int xmphy_mii_phy_auto(struct mii_softc *); 85 86static const struct mii_phydesc xmphys[] = { 87 { MII_OUI_xxXAQTI, MII_MODEL_XAQTI_XMACII, MII_STR_XAQTI_XMACII }, 88 MII_PHY_DESC(JATO, BASEX), 89 MII_PHY_END 90}; 91 92static int 93xmphy_probe(device_t dev) 94{ 95 96 return (mii_phy_dev_probe(dev, xmphys, BUS_PROBE_DEFAULT)); 97} 98 99static int 100xmphy_attach(device_t dev) 101{ 102 struct mii_softc *sc; 103 struct mii_attach_args *ma; 104 struct mii_data *mii; 105 const char *sep = ""; 106 107 sc = device_get_softc(dev); 108 ma = device_get_ivars(dev); 109 sc->mii_dev = device_get_parent(dev); 110 mii = ma->mii_data; 111 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 112 113 sc->mii_inst = mii->mii_instance; 114 sc->mii_phy = ma->mii_phyno; 115 sc->mii_service = xmphy_service; 116 sc->mii_pdata = mii; 117 118 sc->mii_flags |= MIIF_NOISOLATE; 119 mii->mii_instance++; 120 121#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 122#define PRINT(s) printf("%s%s", sep, s); sep = ", " 123 124 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 125 BMCR_ISO); 126#if 0 127 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 128 BMCR_LOOP|BMCR_S100); 129#endif 130 131 mii_phy_reset(sc); 132 133 device_printf(dev, " "); 134 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 135 XMPHY_BMCR_FDX); 136 PRINT("1000baseSX"); 137 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 138 PRINT("1000baseSX-FDX"); 139 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 140 PRINT("auto"); 141 142 printf("\n"); 143#undef ADD 144#undef PRINT 145 146 MIIBUS_MEDIAINIT(sc->mii_dev); 147 return (0); 148} 149 150static int 151xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 152{ 153 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 154 int reg; 155 156 switch (cmd) { 157 case MII_POLLSTAT: 158 /* 159 * If we're not polling our PHY instance, just return. 160 */ 161 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 162 return (0); 163 break; 164 165 case MII_MEDIACHG: 166 /* 167 * If the media indicates a different PHY instance, 168 * isolate ourselves. 169 */ 170 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 171 reg = PHY_READ(sc, MII_BMCR); 172 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 173 return (0); 174 } 175 176 /* 177 * If the interface is not up, don't do anything. 178 */ 179 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 180 break; 181 182 switch (IFM_SUBTYPE(ife->ifm_media)) { 183 case IFM_AUTO: 184#ifdef foo 185 /* 186 * If we're already in auto mode, just return. 187 */ 188 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 189 return (0); 190#endif 191 (void) xmphy_mii_phy_auto(sc); 192 break; 193 case IFM_1000_SX: 194 mii_phy_reset(sc); 195 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 196 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 197 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 198 } else { 199 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 200 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 201 } 202 break; 203 case IFM_100_T4: 204 case IFM_100_TX: 205 case IFM_10_T: 206 default: 207 return (EINVAL); 208 } 209 break; 210 211 case MII_TICK: 212 /* 213 * If we're not currently selected, just return. 214 */ 215 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 216 return (0); 217 218 /* 219 * Is the interface even up? 220 */ 221 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 222 return (0); 223 224 /* 225 * Only used for autonegotiation. 226 */ 227 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 228 break; 229 230 /* 231 * Check to see if we have link. If we do, we don't 232 * need to restart the autonegotiation process. Read 233 * the BMSR twice in case it's latched. 234 */ 235 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 236 if (reg & BMSR_LINK) 237 break; 238 239 /* 240 * Only retry autonegotiation every 5 seconds. 241 */ 242 if (++sc->mii_ticks <= MII_ANEGTICKS) 243 break; 244 245 sc->mii_ticks = 0; 246 247 mii_phy_reset(sc); 248 xmphy_mii_phy_auto(sc); 249 return (0); 250 } 251 252 /* Update the media status. */ 253 xmphy_status(sc); 254 255 /* Callback if something changed. */ 256 mii_phy_update(sc, cmd); 257 return (0); 258} 259 260static void 261xmphy_status(struct mii_softc *sc) 262{ 263 struct mii_data *mii = sc->mii_pdata; 264 int bmsr, bmcr, anlpar; 265 266 mii->mii_media_status = IFM_AVALID; 267 mii->mii_media_active = IFM_ETHER; 268 269 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 270 PHY_READ(sc, XMPHY_MII_BMSR); 271 if (bmsr & XMPHY_BMSR_LINK) 272 mii->mii_media_status |= IFM_ACTIVE; 273 274 /* Do dummy read of extended status register. */ 275 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 276 277 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 278 279 if (bmcr & XMPHY_BMCR_LOOP) 280 mii->mii_media_active |= IFM_LOOP; 281 282 283 if (bmcr & XMPHY_BMCR_AUTOEN) { 284 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 285 if (bmsr & XMPHY_BMSR_LINK) { 286 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 287 return; 288 } 289 /* Erg, still trying, I guess... */ 290 mii->mii_media_active |= IFM_NONE; 291 return; 292 } 293 294 mii->mii_media_active |= IFM_1000_SX; 295 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 296 PHY_READ(sc, XMPHY_MII_ANLPAR); 297 if (anlpar & XMPHY_ANLPAR_FDX) 298 mii->mii_media_active |= IFM_FDX; 299 else 300 mii->mii_media_active |= IFM_HDX; 301 return; 302 } 303 304 mii->mii_media_active |= IFM_1000_SX; 305 if (bmcr & XMPHY_BMCR_FDX) 306 mii->mii_media_active |= IFM_FDX; 307 else 308 mii->mii_media_active |= IFM_HDX; 309} 310 311static int 312xmphy_mii_phy_auto(struct mii_softc *mii) 313{ 314 int anar = 0; 315 316 anar = PHY_READ(mii, XMPHY_MII_ANAR); 317 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 318 PHY_WRITE(mii, XMPHY_MII_ANAR, anar); 319 DELAY(1000); 320 PHY_WRITE(mii, XMPHY_MII_BMCR, 321 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 322 323 return (EJUSTRETURN); 324} 325