1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2009, M. Warner Losh 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 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 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 /* 33 * driver for internal phy in the AX88x9x chips. 34 */ 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/module.h> 40 #include <sys/socket.h> 41 #include <sys/bus.h> 42 43 #include <net/if.h> 44 #include <net/if_media.h> 45 46 #include <dev/mii/mii.h> 47 #include <dev/mii/miivar.h> 48 #include "miidevs.h" 49 50 #include "miibus_if.h" 51 52 static int axphy_probe(device_t dev); 53 static int axphy_attach(device_t dev); 54 55 static device_method_t axphy_methods[] = { 56 /* device interface */ 57 DEVMETHOD(device_probe, axphy_probe), 58 DEVMETHOD(device_attach, axphy_attach), 59 DEVMETHOD(device_detach, mii_phy_detach), 60 DEVMETHOD(device_shutdown, bus_generic_shutdown), 61 DEVMETHOD_END 62 }; 63 64 static devclass_t axphy_devclass; 65 66 static driver_t axphy_driver = { 67 "axphy", 68 axphy_methods, 69 sizeof(struct mii_softc) 70 }; 71 72 DRIVER_MODULE(axphy, miibus, axphy_driver, axphy_devclass, 0, 0); 73 74 static int axphy_service(struct mii_softc *, struct mii_data *, int); 75 static void axphy_status(struct mii_softc *); 76 77 static const struct mii_phydesc axphys[] = { 78 MII_PHY_DESC(xxASIX, AX88X9X), 79 MII_PHY_END 80 }; 81 82 static const struct mii_phy_funcs axphy_funcs = { 83 axphy_service, 84 axphy_status, 85 mii_phy_reset 86 }; 87 88 static int 89 axphy_probe(device_t dev) 90 { 91 92 return (mii_phy_dev_probe(dev, axphys, BUS_PROBE_DEFAULT)); 93 } 94 95 static int 96 axphy_attach(device_t dev) 97 { 98 struct mii_softc *sc; 99 100 sc = device_get_softc(dev); 101 102 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 103 &axphy_funcs, 1); 104 mii_phy_setmedia(sc); 105 106 return (0); 107 } 108 109 static int 110 axphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 111 { 112 113 switch (cmd) { 114 case MII_POLLSTAT: 115 break; 116 117 case MII_MEDIACHG: 118 mii_phy_setmedia(sc); 119 break; 120 121 case MII_TICK: 122 if (mii_phy_tick(sc) == EJUSTRETURN) 123 return (0); 124 break; 125 } 126 127 /* Update the media status. */ 128 PHY_STATUS(sc); 129 130 /* Callback if something changed. */ 131 mii_phy_update(sc, cmd); 132 return (0); 133 } 134 135 static void 136 axphy_status(struct mii_softc *sc) 137 { 138 struct mii_data *mii = sc->mii_pdata; 139 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 140 int bmsr, bmcr; 141 142 mii->mii_media_status = IFM_AVALID; 143 mii->mii_media_active = IFM_ETHER; 144 145 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 146 if (bmsr & BMSR_LINK) 147 mii->mii_media_status |= IFM_ACTIVE; 148 149 bmcr = PHY_READ(sc, MII_BMCR); 150 if (bmcr & BMCR_ISO) { 151 mii->mii_media_active |= IFM_NONE; 152 mii->mii_media_status = 0; 153 return; 154 } 155 156 if (bmcr & BMCR_LOOP) 157 mii->mii_media_active |= IFM_LOOP; 158 159 if (bmcr & BMCR_AUTOEN) { 160 if ((bmsr & BMSR_ACOMP) == 0) { 161 mii->mii_media_active |= IFM_NONE; 162 return; 163 } 164 165 #if 0 166 scr = PHY_READ(sc, MII_AXPHY_SCR); 167 if (scr & SCR_S100) 168 mii->mii_media_active |= IFM_100_TX; 169 else 170 mii->mii_media_active |= IFM_10_T; 171 if (scr & SCR_FDX) 172 mii->mii_media_active |= 173 IFM_FDX | mii_phy_flowstatus(sc); 174 else 175 mii->mii_media_active |= IFM_HDX; 176 #endif 177 } else 178 mii->mii_media_active = ife->ifm_media; 179 } 180