1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2009 M. Warner Losh <imp@FreeBSD.org> 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 unmodified, this list of conditions, and the following 11 * disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 /* 32 * driver for internal phy in the AX88x9x chips. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/module.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 <dev/mii/mii.h> 46 #include <dev/mii/miivar.h> 47 #include "miidevs.h" 48 49 #include "miibus_if.h" 50 51 static int axphy_probe(device_t dev); 52 static int axphy_attach(device_t dev); 53 54 static device_method_t axphy_methods[] = { 55 /* device interface */ 56 DEVMETHOD(device_probe, axphy_probe), 57 DEVMETHOD(device_attach, axphy_attach), 58 DEVMETHOD(device_detach, mii_phy_detach), 59 DEVMETHOD(device_shutdown, bus_generic_shutdown), 60 DEVMETHOD_END 61 }; 62 63 static driver_t axphy_driver = { 64 "axphy", 65 axphy_methods, 66 sizeof(struct mii_softc) 67 }; 68 69 DRIVER_MODULE(axphy, miibus, axphy_driver, 0, 0); 70 71 static int axphy_service(struct mii_softc *, struct mii_data *, int); 72 static void axphy_status(struct mii_softc *); 73 74 static const struct mii_phydesc axphys[] = { 75 MII_PHY_DESC(xxASIX, AX88X9X), 76 MII_PHY_END 77 }; 78 79 static const struct mii_phy_funcs axphy_funcs = { 80 axphy_service, 81 axphy_status, 82 mii_phy_reset 83 }; 84 85 static int 86 axphy_probe(device_t dev) 87 { 88 89 return (mii_phy_dev_probe(dev, axphys, BUS_PROBE_DEFAULT)); 90 } 91 92 static int 93 axphy_attach(device_t dev) 94 { 95 struct mii_softc *sc; 96 97 sc = device_get_softc(dev); 98 99 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 100 &axphy_funcs, 1); 101 mii_phy_setmedia(sc); 102 103 return (0); 104 } 105 106 static int 107 axphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 108 { 109 110 switch (cmd) { 111 case MII_POLLSTAT: 112 break; 113 114 case MII_MEDIACHG: 115 mii_phy_setmedia(sc); 116 break; 117 118 case MII_TICK: 119 if (mii_phy_tick(sc) == EJUSTRETURN) 120 return (0); 121 break; 122 } 123 124 /* Update the media status. */ 125 PHY_STATUS(sc); 126 127 /* Callback if something changed. */ 128 mii_phy_update(sc, cmd); 129 return (0); 130 } 131 132 static void 133 axphy_status(struct mii_softc *sc) 134 { 135 struct mii_data *mii = sc->mii_pdata; 136 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 137 int bmsr, bmcr; 138 139 mii->mii_media_status = IFM_AVALID; 140 mii->mii_media_active = IFM_ETHER; 141 142 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 143 if (bmsr & BMSR_LINK) 144 mii->mii_media_status |= IFM_ACTIVE; 145 146 bmcr = PHY_READ(sc, MII_BMCR); 147 if (bmcr & BMCR_ISO) { 148 mii->mii_media_active |= IFM_NONE; 149 mii->mii_media_status = 0; 150 return; 151 } 152 153 if (bmcr & BMCR_LOOP) 154 mii->mii_media_active |= IFM_LOOP; 155 156 if (bmcr & BMCR_AUTOEN) { 157 if ((bmsr & BMSR_ACOMP) == 0) { 158 mii->mii_media_active |= IFM_NONE; 159 return; 160 } 161 162 #if 0 163 scr = PHY_READ(sc, MII_AXPHY_SCR); 164 if (scr & SCR_S100) 165 mii->mii_media_active |= IFM_100_TX; 166 else 167 mii->mii_media_active |= IFM_10_T; 168 if (scr & SCR_FDX) 169 mii->mii_media_active |= 170 IFM_FDX | mii_phy_flowstatus(sc); 171 else 172 mii->mii_media_active |= IFM_HDX; 173 #endif 174 } else 175 mii->mii_media_active = ife->ifm_media; 176 } 177