pnaphy.c revision 106107
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: head/sys/dev/mii/pnaphy.c 106107 2002-10-29 00:20:47Z semenu $ 34 */ 35 36/* 37 * driver for homePNA PHYs 38 * This is really just a stub that allows us to identify homePNA-based 39 * transceicers and display the link status. MII-based homePNA PHYs 40 * only support one media type and no autonegotiation. If we were 41 * really clever, we could tweak some of the vendor-specific registers 42 * to optimize the link. 43 */ 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/kernel.h> 48#include <sys/socket.h> 49#include <sys/errno.h> 50#include <sys/module.h> 51#include <sys/bus.h> 52 53#include <net/if.h> 54#include <net/if_media.h> 55 56 57#include <dev/mii/mii.h> 58#include <dev/mii/miivar.h> 59#include <dev/mii/miidevs.h> 60 61#include "miibus_if.h" 62 63#if !defined(lint) 64static const char rcsid[] = 65 "$FreeBSD: head/sys/dev/mii/pnaphy.c 106107 2002-10-29 00:20:47Z semenu $"; 66#endif 67 68static int pnaphy_probe(device_t); 69static int pnaphy_attach(device_t); 70 71static device_method_t pnaphy_methods[] = { 72 /* device interface */ 73 DEVMETHOD(device_probe, pnaphy_probe), 74 DEVMETHOD(device_attach, pnaphy_attach), 75 DEVMETHOD(device_detach, mii_phy_detach), 76 DEVMETHOD(device_shutdown, bus_generic_shutdown), 77 { 0, 0 } 78}; 79 80static devclass_t pnaphy_devclass; 81 82static driver_t pnaphy_driver = { 83 "pnaphy", 84 pnaphy_methods, 85 sizeof(struct mii_softc) 86}; 87 88DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, pnaphy_devclass, 0, 0); 89 90static int pnaphy_service(struct mii_softc *, struct mii_data *,int); 91 92static int 93pnaphy_probe(dev) 94 device_t dev; 95{ 96 97 struct mii_attach_args *ma; 98 99 ma = device_get_ivars(dev); 100 101 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_AMD && 102 MII_MODEL(ma->mii_id2) == MII_MODEL_AMD_79c978) { 103 device_set_desc(dev, MII_STR_AMD_79c978); 104 return(0); 105 } 106 107 return(ENXIO); 108} 109 110static int 111pnaphy_attach(dev) 112 device_t dev; 113{ 114 struct mii_softc *sc; 115 struct mii_attach_args *ma; 116 struct mii_data *mii; 117 const char *sep = ""; 118 119 sc = device_get_softc(dev); 120 ma = device_get_ivars(dev); 121 sc->mii_dev = device_get_parent(dev); 122 mii = device_get_softc(sc->mii_dev); 123 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 124 125 sc->mii_inst = mii->mii_instance; 126 sc->mii_phy = ma->mii_phyno; 127 sc->mii_service = pnaphy_service; 128 sc->mii_pdata = mii; 129 130 mii->mii_instance++; 131 132 sc->mii_flags |= MIIF_NOISOLATE; 133 134#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 135#define PRINT(s) printf("%s%s", sep, s); sep = ", " 136 137 mii_phy_reset(sc); 138 139 sc->mii_capabilities = 140 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 141 device_printf(dev, " "); 142 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 143 printf("no media present"); 144 else { 145 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, sc->mii_inst), 0); 146 PRINT("HomePNA"); 147 } 148 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 149 BMCR_ISO); 150 151 printf("\n"); 152 153#undef ADD 154#undef PRINT 155 156 MIIBUS_MEDIAINIT(sc->mii_dev); 157 158 return(0); 159} 160 161static int 162pnaphy_service(sc, mii, cmd) 163 struct mii_softc *sc; 164 struct mii_data *mii; 165 int cmd; 166{ 167 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 168 int reg; 169 170 switch (cmd) { 171 case MII_POLLSTAT: 172 /* 173 * If we're not polling our PHY instance, just return. 174 */ 175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 176 return (0); 177 break; 178 179 case MII_MEDIACHG: 180 /* 181 * If the media indicates a different PHY instance, 182 * isolate ourselves. 183 */ 184 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 185 reg = PHY_READ(sc, MII_BMCR); 186 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 187 return (0); 188 } 189 190 /* 191 * If the interface is not up, don't do anything. 192 */ 193 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 194 break; 195 196 switch (IFM_SUBTYPE(ife->ifm_media)) { 197 case IFM_AUTO: 198 case IFM_10_T: 199 case IFM_100_TX: 200 case IFM_100_T4: 201 return (EINVAL); 202 default: 203 /* 204 * BMCR data is stored in the ifmedia entry. 205 */ 206 PHY_WRITE(sc, MII_ANAR, 207 mii_anar(ife->ifm_media)); 208 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 209 } 210 break; 211 212 case MII_TICK: 213 /* 214 * If we're not currently selected, just return. 215 */ 216 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 217 return (0); 218 if (mii_phy_tick(sc) == EJUSTRETURN) 219 return (0); 220 break; 221 } 222 223 /* Update the media status. */ 224 ukphy_status(sc); 225 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) 226 mii->mii_media_active = IFM_ETHER|IFM_HPNA_1; 227 228 /* Callback if something changed. */ 229 mii_phy_update(sc, cmd); 230 return (0); 231} 232