pnaphy.c revision 119418
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: head/sys/dev/mii/pnaphy.c 119418 2003-08-24 17:55:58Z obrien $"); 36 37/* 38 * driver for homePNA PHYs 39 * This is really just a stub that allows us to identify homePNA-based 40 * transceicers and display the link status. MII-based homePNA PHYs 41 * only support one media type and no autonegotiation. If we were 42 * really clever, we could tweak some of the vendor-specific registers 43 * to optimize the link. 44 */ 45 46#include <sys/cdefs.h> 47__FBSDID("$FreeBSD: head/sys/dev/mii/pnaphy.c 119418 2003-08-24 17:55:58Z obrien $"); 48 49#include <sys/param.h> 50#include <sys/systm.h> 51#include <sys/kernel.h> 52#include <sys/socket.h> 53#include <sys/errno.h> 54#include <sys/module.h> 55#include <sys/bus.h> 56 57#include <net/if.h> 58#include <net/if_media.h> 59 60 61#include <dev/mii/mii.h> 62#include <dev/mii/miivar.h> 63#include "miidevs.h" 64 65#include "miibus_if.h" 66 67static int pnaphy_probe(device_t); 68static int pnaphy_attach(device_t); 69 70static device_method_t pnaphy_methods[] = { 71 /* device interface */ 72 DEVMETHOD(device_probe, pnaphy_probe), 73 DEVMETHOD(device_attach, pnaphy_attach), 74 DEVMETHOD(device_detach, mii_phy_detach), 75 DEVMETHOD(device_shutdown, bus_generic_shutdown), 76 { 0, 0 } 77}; 78 79static devclass_t pnaphy_devclass; 80 81static driver_t pnaphy_driver = { 82 "pnaphy", 83 pnaphy_methods, 84 sizeof(struct mii_softc) 85}; 86 87DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, pnaphy_devclass, 0, 0); 88 89static int pnaphy_service(struct mii_softc *, struct mii_data *,int); 90 91static int 92pnaphy_probe(dev) 93 device_t dev; 94{ 95 96 struct mii_attach_args *ma; 97 98 ma = device_get_ivars(dev); 99 100 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_AMD && 101 MII_MODEL(ma->mii_id2) == MII_MODEL_AMD_79c978) { 102 device_set_desc(dev, MII_STR_AMD_79c978); 103 return(0); 104 } 105 106 return(ENXIO); 107} 108 109static int 110pnaphy_attach(dev) 111 device_t dev; 112{ 113 struct mii_softc *sc; 114 struct mii_attach_args *ma; 115 struct mii_data *mii; 116 const char *sep = ""; 117 118 sc = device_get_softc(dev); 119 ma = device_get_ivars(dev); 120 sc->mii_dev = device_get_parent(dev); 121 mii = device_get_softc(sc->mii_dev); 122 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 123 124 sc->mii_inst = mii->mii_instance; 125 sc->mii_phy = ma->mii_phyno; 126 sc->mii_service = pnaphy_service; 127 sc->mii_pdata = mii; 128 129 mii->mii_instance++; 130 131 sc->mii_flags |= MIIF_NOISOLATE; 132 133#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 134#define PRINT(s) printf("%s%s", sep, s); sep = ", " 135 136 mii_phy_reset(sc); 137 138 sc->mii_capabilities = 139 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 140 device_printf(dev, " "); 141 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 142 printf("no media present"); 143 else { 144 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, sc->mii_inst), 0); 145 PRINT("HomePNA"); 146 } 147 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 148 BMCR_ISO); 149 150 printf("\n"); 151 152#undef ADD 153#undef PRINT 154 155 MIIBUS_MEDIAINIT(sc->mii_dev); 156 157 return(0); 158} 159 160static int 161pnaphy_service(sc, mii, cmd) 162 struct mii_softc *sc; 163 struct mii_data *mii; 164 int cmd; 165{ 166 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 167 int reg; 168 169 switch (cmd) { 170 case MII_POLLSTAT: 171 /* 172 * If we're not polling our PHY instance, just return. 173 */ 174 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 175 return (0); 176 break; 177 178 case MII_MEDIACHG: 179 /* 180 * If the media indicates a different PHY instance, 181 * isolate ourselves. 182 */ 183 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 184 reg = PHY_READ(sc, MII_BMCR); 185 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 186 return (0); 187 } 188 189 /* 190 * If the interface is not up, don't do anything. 191 */ 192 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 193 break; 194 195 switch (IFM_SUBTYPE(ife->ifm_media)) { 196 case IFM_AUTO: 197 case IFM_10_T: 198 case IFM_100_TX: 199 case IFM_100_T4: 200 return (EINVAL); 201 default: 202 /* 203 * BMCR data is stored in the ifmedia entry. 204 */ 205 PHY_WRITE(sc, MII_ANAR, 206 mii_anar(ife->ifm_media)); 207 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 208 } 209 break; 210 211 case MII_TICK: 212 /* 213 * If we're not currently selected, just return. 214 */ 215 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 216 return (0); 217 if (mii_phy_tick(sc) == EJUSTRETURN) 218 return (0); 219 break; 220 } 221 222 /* Update the media status. */ 223 ukphy_status(sc); 224 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) 225 mii->mii_media_active = IFM_ETHER|IFM_HPNA_1; 226 227 /* Callback if something changed. */ 228 mii_phy_update(sc, cmd); 229 return (0); 230} 231