1 /*- 2 * Copyright (c) 2001 Jonathan Lemon 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/sys/dev/mii/inphy.c,v 1.14 2004/05/30 17:57:40 phk Exp $ 30 */ 31 32 /* 33 * driver for Intel 82553 and 82555 PHYs 34 */ 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/socket.h> 40 #include <sys/bus.h> 41 42 #include <net/if.h> 43 #include <net/if_media.h> 44 45 #include "mii.h" 46 #include "miivar.h" 47 #include "miidevs.h" 48 49 #include "inphyreg.h" 50 51 #include "miibus_if.h" 52 53 static int inphy_probe(device_t dev); 54 static int inphy_attach(device_t dev); 55 static int inphy_service(struct mii_softc *, struct mii_data *, int); 56 static void inphy_status(struct mii_softc *); 57 58 static device_method_t inphy_methods[] = { 59 /* device interface */ 60 DEVMETHOD(device_probe, inphy_probe), 61 DEVMETHOD(device_attach, inphy_attach), 62 DEVMETHOD(device_detach, ukphy_detach), 63 DEVMETHOD(device_shutdown, bus_generic_shutdown), 64 DEVMETHOD_END 65 }; 66 67 static const struct mii_phydesc inphys[] = { 68 MII_PHYDESC(xxINTEL, I82553AB), /* Intel 82553 A/B steppings */ 69 MII_PHYDESC(INTEL, I82555), 70 MII_PHYDESC(INTEL, I82553C), 71 MII_PHYDESC(INTEL, I82562EM), 72 MII_PHYDESC(INTEL, I82562ET), 73 MII_PHYDESC_NULL 74 }; 75 76 static devclass_t inphy_devclass; 77 78 static driver_t inphy_driver = { 79 "inphy", 80 inphy_methods, 81 sizeof(struct mii_softc) 82 }; 83 84 DRIVER_MODULE(inphy, miibus, inphy_driver, inphy_devclass, NULL, NULL); 85 86 static int 87 inphy_probe(device_t dev) 88 { 89 struct mii_attach_args *ma = device_get_ivars(dev); 90 const struct mii_phydesc *mpd; 91 92 mpd = mii_phy_match(ma, inphys); 93 if (mpd != NULL) { 94 device_set_desc(dev, mpd->mpd_name); 95 return (0); 96 } 97 return (ENXIO); 98 } 99 100 static int 101 inphy_attach(device_t dev) 102 { 103 struct mii_softc *sc; 104 struct mii_attach_args *ma; 105 struct mii_data *mii; 106 107 sc = device_get_softc(dev); 108 ma = device_get_ivars(dev); 109 mii_softc_init(sc, ma); 110 sc->mii_dev = device_get_parent(dev); 111 mii = device_get_softc(sc->mii_dev); 112 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 113 114 sc->mii_inst = mii->mii_instance; 115 sc->mii_service = inphy_service; 116 sc->mii_pdata = mii; 117 mii->mii_instance++; 118 119 #if 0 120 sc->mii_flags |= MIIF_NOISOLATE; 121 #endif 122 123 ifmedia_add(&mii->mii_media, 124 IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 125 MII_MEDIA_100_TX, NULL); 126 127 mii_phy_reset(sc); 128 129 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 130 131 device_printf(dev, " "); 132 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 133 kprintf("no media present"); 134 else 135 mii_phy_add_media(sc); 136 kprintf("\n"); 137 138 MIIBUS_MEDIAINIT(sc->mii_dev); 139 return (0); 140 } 141 142 static int 143 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 144 { 145 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 146 int reg; 147 148 switch (cmd) { 149 case MII_POLLSTAT: 150 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 151 return (0); 152 break; 153 154 case MII_MEDIACHG: 155 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 156 reg = PHY_READ(sc, MII_BMCR); 157 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 158 return (0); 159 } 160 161 /* 162 * If the interface is not up, don't do anything. 163 */ 164 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 165 break; 166 167 mii_phy_set_media(sc); 168 break; 169 170 case MII_TICK: 171 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 172 return (0); 173 174 if (mii_phy_tick(sc) == EJUSTRETURN) 175 return (0); 176 break; 177 } 178 179 /* Update the media status. */ 180 inphy_status(sc); 181 182 /* Callback if something changed. */ 183 mii_phy_update(sc, cmd); 184 return (0); 185 } 186 187 static void 188 inphy_status(struct mii_softc *sc) 189 { 190 struct mii_data *mii = sc->mii_pdata; 191 int bmsr, bmcr, scr; 192 193 mii->mii_media_status = IFM_AVALID; 194 mii->mii_media_active = IFM_ETHER; 195 196 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 197 if (bmsr & BMSR_LINK) 198 mii->mii_media_status |= IFM_ACTIVE; 199 200 bmcr = PHY_READ(sc, MII_BMCR); 201 if (bmcr & BMCR_ISO) { 202 mii->mii_media_active |= IFM_NONE; 203 mii->mii_media_status = 0; 204 return; 205 } 206 207 if (bmcr & BMCR_LOOP) 208 mii->mii_media_active |= IFM_LOOP; 209 210 if (bmcr & BMCR_AUTOEN) { 211 if ((bmsr & BMSR_ACOMP) == 0) { 212 mii->mii_media_active |= IFM_NONE; 213 return; 214 } 215 216 scr = PHY_READ(sc, MII_INPHY_SCR); 217 if ((bmsr & BMSR_100T4) && (scr & SCR_T4)) 218 mii->mii_media_active |= IFM_100_T4; 219 else if (scr & SCR_S100) 220 mii->mii_media_active |= IFM_100_TX; 221 else 222 mii->mii_media_active |= IFM_10_T; 223 if (scr & SCR_FDX) 224 mii->mii_media_active |= IFM_FDX; 225 } else { 226 mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media; 227 } 228 } 229