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 58 #include <dev/mii/mii.h> 59 #include <dev/mii/miivar.h> 60 #include "miidevs.h" 61 62 #include "miibus_if.h" 63 64 static int pnaphy_probe(device_t); 65 static int pnaphy_attach(device_t); 66 67 static device_method_t pnaphy_methods[] = { 68 /* device interface */ 69 DEVMETHOD(device_probe, pnaphy_probe), 70 DEVMETHOD(device_attach, pnaphy_attach), 71 DEVMETHOD(device_detach, mii_phy_detach), 72 DEVMETHOD(device_shutdown, bus_generic_shutdown), 73 { 0, 0 } 74 }; 75 76 static devclass_t pnaphy_devclass; 77 78 static driver_t pnaphy_driver = { 79 "pnaphy", 80 pnaphy_methods, 81 sizeof(struct mii_softc) 82 }; 83 84 DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, pnaphy_devclass, 0, 0); 85 86 static int pnaphy_service(struct mii_softc *, struct mii_data *,int); 87 88 static int 89 pnaphy_probe(device_t dev) 90 { 91 92 struct mii_attach_args *ma; 93 94 ma = device_get_ivars(dev); 95 96 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_AMD && 97 MII_MODEL(ma->mii_id2) == MII_MODEL_AMD_79c978) { 98 device_set_desc(dev, MII_STR_AMD_79c978); 99 return(BUS_PROBE_DEFAULT); 100 } 101 102 return(ENXIO); 103 } 104 105 static int 106 pnaphy_attach(device_t dev) 107 { 108 struct mii_softc *sc; 109 struct mii_attach_args *ma; 110 struct mii_data *mii; 111 const char *sep = ""; 112 113 sc = device_get_softc(dev); 114 ma = device_get_ivars(dev); 115 sc->mii_dev = device_get_parent(dev); 116 mii = device_get_softc(sc->mii_dev); 117 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 118 119 sc->mii_inst = mii->mii_instance; 120 sc->mii_phy = ma->mii_phyno; 121 sc->mii_service = pnaphy_service; 122 sc->mii_pdata = mii; 123 124 mii->mii_instance++; 125 126 sc->mii_flags |= MIIF_NOISOLATE; 127 128 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 129 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 130 131 mii_phy_reset(sc); 132 133 sc->mii_capabilities = 134 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 135 device_printf(dev, " "); 136 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 137 printf("no media present"); 138 else { 139 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, sc->mii_inst), 0); 140 PRINT("HomePNA"); 141 } 142 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 143 BMCR_ISO); 144 145 printf("\n"); 146 147 #undef ADD 148 #undef PRINT 149 150 MIIBUS_MEDIAINIT(sc->mii_dev); 151 152 return(0); 153 } 154 155 static int 156 pnaphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 157 { 158 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 159 int reg; 160 161 switch (cmd) { 162 case MII_POLLSTAT: 163 /* 164 * If we're not polling our PHY instance, just return. 165 */ 166 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 167 return (0); 168 break; 169 170 case MII_MEDIACHG: 171 /* 172 * If the media indicates a different PHY instance, 173 * isolate ourselves. 174 */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 176 reg = PHY_READ(sc, MII_BMCR); 177 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 178 return (0); 179 } 180 181 /* 182 * If the interface is not up, don't do anything. 183 */ 184 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 185 break; 186 187 switch (IFM_SUBTYPE(ife->ifm_media)) { 188 case IFM_AUTO: 189 case IFM_10_T: 190 case IFM_100_TX: 191 case IFM_100_T4: 192 return (EINVAL); 193 default: 194 /* 195 * BMCR data is stored in the ifmedia entry. 196 */ 197 PHY_WRITE(sc, MII_ANAR, 198 mii_anar(ife->ifm_media)); 199 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 200 } 201 break; 202 203 case MII_TICK: 204 /* 205 * If we're not currently selected, just return. 206 */ 207 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 208 return (0); 209 if (mii_phy_tick(sc) == EJUSTRETURN) 210 return (0); 211 break; 212 } 213 214 /* Update the media status. */ 215 ukphy_status(sc); 216 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) 217 mii->mii_media_active = IFM_ETHER|IFM_HPNA_1; 218 219 /* Callback if something changed. */ 220 mii_phy_update(sc, cmd); 221 return (0); 222 } 223