1 /*- 2 * Copyright (c) 2000 Berkeley Software Design, Inc. 3 * Copyright (c) 1997, 1998, 1999, 2000 4 * Bill Paul <wpaul@osd.bsdi.com>. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Bill Paul. 17 * 4. Neither the name of the author nor the names of any co-contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 31 * THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 /* 38 * driver for homePNA PHYs 39 * This is really just a stub that allows us to identify homePNA-based 40 * transceicers and display the link status. MII-based homePNA PHYs 41 * only support one media type and no autonegotiation. If we were 42 * really clever, we could tweak some of the vendor-specific registers 43 * to optimize the link. 44 */ 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/socket.h> 50 #include <sys/errno.h> 51 #include <sys/module.h> 52 #include <sys/bus.h> 53 54 #include <net/if.h> 55 #include <net/if_media.h> 56 57 #include <dev/mii/mii.h> 58 #include <dev/mii/miivar.h> 59 #include "miidevs.h" 60 61 #include "miibus_if.h" 62 63 static int pnaphy_probe(device_t); 64 static int pnaphy_attach(device_t); 65 66 static device_method_t pnaphy_methods[] = { 67 /* device interface */ 68 DEVMETHOD(device_probe, pnaphy_probe), 69 DEVMETHOD(device_attach, pnaphy_attach), 70 DEVMETHOD(device_detach, mii_phy_detach), 71 DEVMETHOD(device_shutdown, bus_generic_shutdown), 72 { 0, 0 } 73 }; 74 75 static devclass_t pnaphy_devclass; 76 77 static driver_t pnaphy_driver = { 78 "pnaphy", 79 pnaphy_methods, 80 sizeof(struct mii_softc) 81 }; 82 83 DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, pnaphy_devclass, 0, 0); 84 85 static int pnaphy_service(struct mii_softc *, struct mii_data *,int); 86 87 static const struct mii_phydesc pnaphys[] = { 88 MII_PHY_DESC(AMD, 79c978), 89 MII_PHY_END 90 }; 91 92 static int 93 pnaphy_probe(device_t dev) 94 { 95 96 return (mii_phy_dev_probe(dev, pnaphys, BUS_PROBE_DEFAULT)); 97 } 98 99 static int 100 pnaphy_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 = device_get_softc(sc->mii_dev); 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 = pnaphy_service; 116 sc->mii_pdata = mii; 117 118 mii->mii_instance++; 119 120 sc->mii_flags |= MIIF_NOISOLATE; 121 122 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 123 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 124 125 mii_phy_reset(sc); 126 127 sc->mii_capabilities = 128 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 129 device_printf(dev, " "); 130 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 131 printf("no media present"); 132 else { 133 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, sc->mii_inst), 0); 134 PRINT("HomePNA"); 135 } 136 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 137 BMCR_ISO); 138 139 printf("\n"); 140 141 #undef ADD 142 #undef PRINT 143 144 MIIBUS_MEDIAINIT(sc->mii_dev); 145 146 return (0); 147 } 148 149 static int 150 pnaphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 151 { 152 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 153 int reg; 154 155 switch (cmd) { 156 case MII_POLLSTAT: 157 /* 158 * If we're not polling our PHY instance, just return. 159 */ 160 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 161 return (0); 162 break; 163 164 case MII_MEDIACHG: 165 /* 166 * If the media indicates a different PHY instance, 167 * isolate ourselves. 168 */ 169 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 170 reg = PHY_READ(sc, MII_BMCR); 171 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 172 return (0); 173 } 174 175 /* 176 * If the interface is not up, don't do anything. 177 */ 178 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 179 break; 180 181 switch (IFM_SUBTYPE(ife->ifm_media)) { 182 case IFM_AUTO: 183 case IFM_10_T: 184 case IFM_100_TX: 185 case IFM_100_T4: 186 return (EINVAL); 187 default: 188 /* 189 * BMCR data is stored in the ifmedia entry. 190 */ 191 PHY_WRITE(sc, MII_ANAR, 192 mii_anar(ife->ifm_media)); 193 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 194 } 195 break; 196 197 case MII_TICK: 198 /* 199 * If we're not currently selected, just return. 200 */ 201 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 202 return (0); 203 if (mii_phy_tick(sc) == EJUSTRETURN) 204 return (0); 205 break; 206 } 207 208 /* Update the media status. */ 209 ukphy_status(sc); 210 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) 211 mii->mii_media_active = IFM_ETHER|IFM_HPNA_1; 212 213 /* Callback if something changed. */ 214 mii_phy_update(sc, cmd); 215 return (0); 216 } 217