1/* $NetBSD: ukphy.c,v 1.55 2021/06/29 21:03:36 pgoyette Exp $ */ 2 3/*- 4 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center, and by Frank van der Linden. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33/* 34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57/* 58 * driver for generic unknown PHYs 59 */ 60 61#include <sys/cdefs.h> 62__KERNEL_RCSID(0, "$NetBSD: ukphy.c,v 1.55 2021/06/29 21:03:36 pgoyette Exp $"); 63 64#ifdef _KERNEL_OPT 65#include "opt_mii.h" 66#endif 67 68#include <sys/param.h> 69#include <sys/systm.h> 70#include <sys/kernel.h> 71#include <sys/device.h> 72#include <sys/socket.h> 73#include <sys/errno.h> 74 75#include <net/if.h> 76#include <net/if_media.h> 77 78#include <dev/mii/mii.h> 79#include <dev/mii/miivar.h> 80 81static int ukphymatch(device_t, cfdata_t, void *); 82static void ukphyattach(device_t, device_t, void *); 83 84CFATTACH_DECL_NEW(ukphy, sizeof(struct mii_softc), 85 ukphymatch, ukphyattach, mii_phy_detach, mii_phy_activate); 86 87static int ukphy_service(struct mii_softc *, struct mii_data *, int); 88 89static const struct mii_phy_funcs ukphy_funcs = { 90 ukphy_service, ukphy_status, mii_phy_reset, 91}; 92 93static int 94ukphymatch(device_t parent, cfdata_t match, void *aux) 95{ 96 97 /* 98 * We know something is here, so always match at a low priority. 99 */ 100 return 1; 101} 102 103static void 104ukphyattach(device_t parent, device_t self, void *aux) 105{ 106 struct mii_softc *sc = device_private(self); 107 struct mii_attach_args *ma = aux; 108 struct mii_data *mii = ma->mii_data; 109 int oui = MII_OUI(ma->mii_id1, ma->mii_id2); 110 int model = MII_MODEL(ma->mii_id2); 111 int rev = MII_REV(ma->mii_id2); 112 char descr[MII_MAX_DESCR_LEN]; 113 114 if (mii_get_descr(descr, sizeof(descr), oui, model) && descr[0]) 115 aprint_normal(": %s (OUI 0x%06x, model 0x%04x), rev. %d\n", 116 descr, oui, model, rev); 117 else 118 aprint_normal(": OUI 0x%06x, model 0x%04x, rev. %d\n", 119 oui, model, rev); 120 aprint_naive(": Media interface\n"); 121 122 sc->mii_dev = self; 123 sc->mii_inst = mii->mii_instance; 124 sc->mii_phy = ma->mii_phyno; 125 sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 126 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 127 sc->mii_mpd_rev = MII_REV(ma->mii_id2); 128 sc->mii_funcs = &ukphy_funcs; 129 sc->mii_pdata = mii; 130 sc->mii_flags = ma->mii_flags; 131 132 /* 133 * Don't do loopback on unknown PHYs. It might confuse some of them. 134 */ 135 sc->mii_flags |= MIIF_NOLOOP; 136 137 mii_lock(mii); 138 139 PHY_RESET(sc); 140 141 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 142 sc->mii_capabilities &= ma->mii_capmask; 143 if (sc->mii_capabilities & BMSR_EXTSTAT) 144 PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities); 145 146 mii_unlock(mii); 147 148 mii_phy_add_media(sc); 149} 150 151static int 152ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 153{ 154 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 155 uint16_t reg; 156 157 KASSERT(mii_locked(mii)); 158 159 switch (cmd) { 160 case MII_POLLSTAT: 161 /* If we're not polling our PHY instance, just return. */ 162 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 163 return 0; 164 break; 165 166 case MII_MEDIACHG: 167 /* 168 * If the media indicates a different PHY instance, 169 * isolate ourselves. 170 */ 171 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 172 PHY_READ(sc, MII_BMCR, ®); 173 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 174 return 0; 175 } 176 177 /* If the interface is not up, don't do anything. */ 178 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 179 break; 180 181 mii_phy_setmedia(sc); 182 break; 183 184 case MII_TICK: 185 /* If we're not currently selected, just return. */ 186 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 187 return 0; 188 189 if (mii_phy_tick(sc) == EJUSTRETURN) 190 return 0; 191 break; 192 193 case MII_DOWN: 194 mii_phy_down(sc); 195 return 0; 196 } 197 198 /* Update the media status. */ 199 mii_phy_status(sc); 200 201 /* Callback if something changed. */ 202 mii_phy_update(sc, cmd); 203 return 0; 204} 205