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 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 /* 35 * driver for Intel 82553 and 82555 PHYs 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/module.h> 42 #include <sys/socket.h> 43 #include <sys/bus.h> 44 45 #include <net/if.h> 46 #include <net/if_var.h> 47 #include <net/if_media.h> 48 49 #include <dev/mii/mii.h> 50 #include <dev/mii/miivar.h> 51 #include "miidevs.h" 52 53 #include <dev/fxp/inphyreg.h> 54 55 #include "miibus_if.h" 56 57 static int inphy_probe(device_t dev); 58 static int inphy_attach(device_t dev); 59 60 static device_method_t inphy_methods[] = { 61 /* device interface */ 62 DEVMETHOD(device_probe, inphy_probe), 63 DEVMETHOD(device_attach, inphy_attach), 64 DEVMETHOD(device_detach, mii_phy_detach), 65 DEVMETHOD(device_shutdown, bus_generic_shutdown), 66 { 0, 0 } 67 }; 68 69 static devclass_t inphy_devclass; 70 71 static driver_t inphy_driver = { 72 "inphy", 73 inphy_methods, 74 sizeof(struct mii_softc) 75 }; 76 77 DRIVER_MODULE(inphy, miibus, inphy_driver, inphy_devclass, 0, 0); 78 79 static int inphy_service(struct mii_softc *, struct mii_data *, int); 80 static void inphy_status(struct mii_softc *); 81 static void inphy_reset(struct mii_softc *); 82 83 static const struct mii_phydesc inphys[] = { 84 MII_PHY_DESC(xxINTEL, I82553), 85 MII_PHY_DESC(yyINTEL, I82553), 86 MII_PHY_DESC(yyINTEL, I82555), 87 MII_PHY_DESC(yyINTEL, I82562EM), 88 MII_PHY_DESC(yyINTEL, I82562ET), 89 MII_PHY_END 90 }; 91 92 static const struct mii_phy_funcs inphy_funcs = { 93 inphy_service, 94 inphy_status, 95 inphy_reset 96 }; 97 98 static int 99 inphy_probe(device_t dev) 100 { 101 102 return (mii_phy_dev_probe(dev, inphys, BUS_PROBE_DEFAULT)); 103 } 104 105 static int 106 inphy_attach(device_t dev) 107 { 108 109 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &inphy_funcs, 1); 110 return (0); 111 } 112 113 static int 114 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 115 { 116 117 switch (cmd) { 118 case MII_POLLSTAT: 119 break; 120 121 case MII_MEDIACHG: 122 /* 123 * If the interface is not up, don't do anything. 124 */ 125 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0) 126 break; 127 128 mii_phy_setmedia(sc); 129 break; 130 131 case MII_TICK: 132 if (mii_phy_tick(sc) == EJUSTRETURN) 133 return (0); 134 break; 135 } 136 137 /* Update the media status. */ 138 PHY_STATUS(sc); 139 140 /* Callback if something changed. */ 141 mii_phy_update(sc, cmd); 142 return (0); 143 } 144 145 static void 146 inphy_status(struct mii_softc *sc) 147 { 148 struct mii_data *mii = sc->mii_pdata; 149 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 150 int bmsr, bmcr, scr; 151 152 mii->mii_media_status = IFM_AVALID; 153 mii->mii_media_active = IFM_ETHER; 154 155 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 156 if (bmsr & BMSR_LINK) 157 mii->mii_media_status |= IFM_ACTIVE; 158 159 bmcr = PHY_READ(sc, MII_BMCR); 160 if (bmcr & BMCR_ISO) { 161 mii->mii_media_active |= IFM_NONE; 162 mii->mii_media_status = 0; 163 return; 164 } 165 166 if (bmcr & BMCR_LOOP) 167 mii->mii_media_active |= IFM_LOOP; 168 169 if (bmcr & BMCR_AUTOEN) { 170 if ((bmsr & BMSR_ACOMP) == 0) { 171 mii->mii_media_active |= IFM_NONE; 172 return; 173 } 174 175 scr = PHY_READ(sc, MII_INPHY_SCR); 176 if (scr & SCR_S100) 177 mii->mii_media_active |= IFM_100_TX; 178 else 179 mii->mii_media_active |= IFM_10_T; 180 if (scr & SCR_FDX) 181 mii->mii_media_active |= 182 IFM_FDX | mii_phy_flowstatus(sc); 183 else 184 mii->mii_media_active |= IFM_HDX; 185 } else 186 mii->mii_media_active = ife->ifm_media; 187 } 188 189 static void 190 inphy_reset(struct mii_softc *sc) 191 { 192 193 mii_phy_reset(sc); 194 195 /* Ensure Bay flow control is disabled. */ 196 PHY_WRITE(sc, MII_INPHY_SCR, 197 PHY_READ(sc, MII_INPHY_SCR) & ~SCR_FLOWCTL); 198 } 199