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 * $FreeBSD: src/sys/dev/mii/pnaphy.c,v 1.1.2.3 2002/11/08 21:53:49 semenu Exp $ 34 * $DragonFly: src/sys/dev/netif/mii_layer/pnaphy.c,v 1.11 2006/12/22 23:26:20 swildner Exp $ 35 */ 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 <machine/clock.h> 58 59 #include "mii.h" 60 #include "miivar.h" 61 #include "miidevs.h" 62 63 #include "miibus_if.h" 64 65 static int pnaphy_probe (device_t); 66 static int pnaphy_attach (device_t); 67 68 static device_method_t pnaphy_methods[] = { 69 /* device interface */ 70 DEVMETHOD(device_probe, pnaphy_probe), 71 DEVMETHOD(device_attach, pnaphy_attach), 72 DEVMETHOD(device_detach, ukphy_detach), 73 DEVMETHOD(device_shutdown, bus_generic_shutdown), 74 { 0, 0 } 75 }; 76 77 static const struct mii_phydesc pnaphys[] = { 78 MII_PHYDESC(AMD, 79c978), 79 MII_PHYDESC_NULL 80 }; 81 82 static devclass_t pnaphy_devclass; 83 84 static driver_t pnaphy_driver = { 85 "pnaphy", 86 pnaphy_methods, 87 sizeof(struct mii_softc) 88 }; 89 90 DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, pnaphy_devclass, 0, 0); 91 92 static int pnaphy_service(struct mii_softc *, struct mii_data *, int); 93 94 static int 95 pnaphy_probe(device_t dev) 96 { 97 struct mii_attach_args *ma = device_get_ivars(dev); 98 const struct mii_phydesc *mpd; 99 100 mpd = mii_phy_match(ma, pnaphys); 101 if (mpd != NULL) { 102 device_set_desc(dev, mpd->mpd_name); 103 return (0); 104 } 105 return(ENXIO); 106 } 107 108 static int 109 pnaphy_attach(device_t dev) 110 { 111 struct mii_softc *sc; 112 struct mii_attach_args *ma; 113 struct mii_data *mii; 114 115 sc = device_get_softc(dev); 116 ma = device_get_ivars(dev); 117 mii_softc_init(sc, ma); 118 sc->mii_dev = device_get_parent(dev); 119 mii = device_get_softc(sc->mii_dev); 120 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 121 122 sc->mii_inst = mii->mii_instance; 123 sc->mii_service = pnaphy_service; 124 sc->mii_pdata = mii; 125 126 mii->mii_instance++; 127 128 sc->mii_flags |= MIIF_NOISOLATE | 129 MIIF_IS_HPNA; /* force HomePNA */ 130 131 mii_phy_reset(sc); 132 133 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 134 135 device_printf(dev, " "); 136 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 137 kprintf("no media present"); 138 else 139 mii_phy_add_media(sc); 140 kprintf("\n"); 141 142 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 143 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 144 MII_MEDIA_NONE); 145 #undef ADD 146 147 MIIBUS_MEDIAINIT(sc->mii_dev); 148 return(0); 149 } 150 151 static int 152 pnaphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 153 { 154 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 155 int reg; 156 157 switch (cmd) { 158 case MII_POLLSTAT: 159 /* 160 * If we're not polling our PHY instance, just return. 161 */ 162 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 163 return (0); 164 break; 165 166 case MII_MEDIACHG: 167 /* 168 * If the media indicates a different PHY instance, 169 * isolate ourselves. 170 */ 171 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 172 reg = PHY_READ(sc, MII_BMCR); 173 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 174 return (0); 175 } 176 177 /* 178 * If the interface is not up, don't do anything. 179 */ 180 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 181 break; 182 183 switch (IFM_SUBTYPE(ife->ifm_media)) { 184 case IFM_AUTO: 185 case IFM_10_T: 186 case IFM_100_TX: 187 case IFM_100_T4: 188 return (EINVAL); 189 default: 190 mii_phy_set_media(sc); 191 } 192 break; 193 194 case MII_TICK: 195 /* 196 * If we're not currently selected, just return. 197 */ 198 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 199 return (0); 200 201 if (mii_phy_tick(sc) == EJUSTRETURN) 202 return (0); 203 break; 204 } 205 206 /* Update the media status. */ 207 ukphy_status(sc); 208 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) 209 mii->mii_media_active = IFM_ETHER | IFM_HPNA_1; 210 211 /* Callback if something changed. */ 212 mii_phy_update(sc, cmd); 213 return (0); 214 } 215