pnaphy.c revision 104094
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 104094 2002-09-28 17:15:38Z phk $ 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/malloc.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 <dev/mii/miidevs.h> 61 62#include "miibus_if.h" 63 64#if !defined(lint) 65static const char rcsid[] = 66 "$FreeBSD: head/sys/dev/mii/pnaphy.c 104094 2002-09-28 17:15:38Z phk $"; 67#endif 68 69static int pnaphy_probe (device_t); 70static int pnaphy_attach (device_t); 71 72static device_method_t pnaphy_methods[] = { 73 /* device interface */ 74 DEVMETHOD(device_probe, pnaphy_probe), 75 DEVMETHOD(device_attach, pnaphy_attach), 76 DEVMETHOD(device_detach, mii_phy_detach), 77 DEVMETHOD(device_shutdown, bus_generic_shutdown), 78 { 0, 0 } 79}; 80 81static devclass_t pnaphy_devclass; 82 83static driver_t pnaphy_driver = { 84 "pnaphy", 85 pnaphy_methods, 86 sizeof(struct mii_softc) 87}; 88 89DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, pnaphy_devclass, 0, 0); 90 91static int pnaphy_service(struct mii_softc *, struct mii_data *,int); 92 93static int 94pnaphy_probe(dev) 95 device_t dev; 96{ 97 98 struct mii_attach_args *ma; 99 100 ma = device_get_ivars(dev); 101 102 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_AMD && 103 MII_MODEL(ma->mii_id2) == MII_MODEL_AMD_79c978) { 104 device_set_desc(dev, MII_STR_AMD_79c978); 105 return(0); 106 } 107 108 return(ENXIO); 109} 110 111static int 112pnaphy_attach(dev) 113 device_t dev; 114{ 115 struct mii_softc *sc; 116 struct mii_attach_args *ma; 117 struct mii_data *mii; 118 const char *sep = ""; 119 120 sc = device_get_softc(dev); 121 ma = device_get_ivars(dev); 122 sc->mii_dev = device_get_parent(dev); 123 mii = device_get_softc(sc->mii_dev); 124 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 125 126 sc->mii_inst = mii->mii_instance; 127 sc->mii_phy = ma->mii_phyno; 128 sc->mii_service = pnaphy_service; 129 sc->mii_pdata = mii; 130 131 mii->mii_instance++; 132 133 sc->mii_flags |= MIIF_NOISOLATE; 134 135#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 136#define PRINT(s) printf("%s%s", sep, s); sep = ", " 137 138 mii_phy_reset(sc); 139 140 sc->mii_capabilities = 141 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 142 device_printf(dev, " "); 143 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 144 printf("no media present"); 145 else { 146 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, sc->mii_inst), 0); 147 PRINT("HomePNA"); 148 } 149 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 150 BMCR_ISO); 151 152 printf("\n"); 153 154#undef ADD 155#undef PRINT 156 157 MIIBUS_MEDIAINIT(sc->mii_dev); 158 159 return(0); 160} 161 162static int 163pnaphy_service(sc, mii, cmd) 164 struct mii_softc *sc; 165 struct mii_data *mii; 166 int cmd; 167{ 168 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 169 int reg; 170 171 switch (cmd) { 172 case MII_POLLSTAT: 173 /* 174 * If we're not polling our PHY instance, just return. 175 */ 176 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 177 return (0); 178 break; 179 180 case MII_MEDIACHG: 181 /* 182 * If the media indicates a different PHY instance, 183 * isolate ourselves. 184 */ 185 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 186 reg = PHY_READ(sc, MII_BMCR); 187 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 188 return (0); 189 } 190 191 /* 192 * If the interface is not up, don't do anything. 193 */ 194 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 195 break; 196 197 switch (IFM_SUBTYPE(ife->ifm_media)) { 198 case IFM_AUTO: 199 case IFM_10_T: 200 case IFM_100_TX: 201 case IFM_100_T4: 202 return (EINVAL); 203 default: 204 /* 205 * BMCR data is stored in the ifmedia entry. 206 */ 207 PHY_WRITE(sc, MII_ANAR, 208 mii_anar(ife->ifm_media)); 209 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 210 } 211 break; 212 213 case MII_TICK: 214 /* 215 * If we're not currently selected, just return. 216 */ 217 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 218 return (0); 219 if (mii_phy_tick(sc) == EJUSTRETURN) 220 return (0); 221 break; 222 } 223 224 /* Update the media status. */ 225 ukphy_status(sc); 226 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) 227 mii->mii_media_active = IFM_ETHER|IFM_HPNA_1; 228 229 /* Callback if something changed. */ 230 mii_phy_update(sc, cmd); 231 return (0); 232} 233